import os import re import random import string import uuid import json import logging import asyncio import time from collections import defaultdict from typing import List, Dict, Any, Optional, Union, AsyncGenerator from aiohttp import ClientSession, ClientResponseError, ClientTimeout from fastapi import FastAPI, HTTPException, Request, Depends, Header from fastapi.responses import JSONResponse, StreamingResponse from pydantic import BaseModel from datetime import datetime # Configure logging logging.basicConfig( level=logging.INFO, format="%(asctime)s [%(levelname)s] %(name)s: %(message)s", handlers=[logging.StreamHandler()] ) logger = logging.getLogger(__name__) # Load environment variables API_KEYS = os.getenv('API_KEYS', '').split(',') # Comma-separated API keys RATE_LIMIT = int(os.getenv('RATE_LIMIT', '60')) # Requests per minute if not API_KEYS or API_KEYS == ['']: logger.error("No API keys found. Please set the API_KEYS environment variable.") raise Exception("API_KEYS environment variable not set.") # Simple in-memory rate limiter based solely on IP addresses rate_limit_store = defaultdict(lambda: {"count": 0, "timestamp": time.time()}) # Define cleanup interval and window CLEANUP_INTERVAL = 60 # seconds RATE_LIMIT_WINDOW = 60 # seconds # Define ImageResponseModel class ImageResponseModel(BaseModel): images: str alt: str def strip_markdown(text: str) -> str: """ Strips markdown syntax from the given text to ensure plain text. """ # Remove bold (**text** or __text__) text = re.sub(r'(\*\*|__)(.*?)\1', r'\2', text) # Remove italic (*text* or _text_) text = re.sub(r'(\*|_)(.*?)\1', r'\2', text) # Remove inline code (`code`) text = re.sub(r'`(.*?)`', r'\1', text) # Remove links [text](url) text = re.sub(r'\[(.*?)\]\((.*?)\)', r'\1', text) # Remove images ![alt](url) text = re.sub(r'!\[(.*?)\]\((.*?)\)', r'\1', text) # Remove headers (# Header) text = re.sub(r'#+\s+(.*)', r'\1', text) # Remove any remaining markdown characters text = re.sub(r'[*_`>#]', '', text) return text # Updated Blackbox Class class Blackbox: label = "Blackbox AI" url = "https://www.blackbox.ai" api_endpoint = "https://www.blackbox.ai/api/chat" working = True supports_gpt_4 = True supports_stream = True supports_system_message = True supports_message_history = True default_model = 'blackboxai' image_models = ['ImageGeneration'] models = [ default_model, 'blackboxai-pro', *image_models, "llama-3.1-8b", 'llama-3.1-70b', 'llama-3.1-405b', 'gpt-4o', 'gemini-pro', 'gemini-1.5-flash', 'claude-sonnet-3.5', 'PythonAgent', 'JavaAgent', 'JavaScriptAgent', 'HTMLAgent', 'GoogleCloudAgent', 'AndroidDeveloper', 'SwiftDeveloper', 'Next.jsAgent', 'MongoDBAgent', 'PyTorchAgent', 'ReactAgent', 'XcodeAgent', 'AngularJSAgent', ] agentMode = { 'ImageGeneration': {'mode': True, 'id': "ImageGenerationLV45LJp", 'name': "Image Generation"}, } trendingAgentMode = { "blackboxai": {}, "gemini-1.5-flash": {'mode': True, 'id': 'Gemini'}, "llama-3.1-8b": {'mode': True, 'id': "llama-3.1-8b"}, 'llama-3.1-70b': {'mode': True, 'id': "llama-3.1-70b"}, 'llama-3.1-405b': {'mode': True, 'id': "llama-3.1-405b"}, 'blackboxai-pro': {'mode': True, 'id': "BLACKBOXAI-PRO"}, 'PythonAgent': {'mode': True, 'id': "Python Agent"}, 'JavaAgent': {'mode': True, 'id': "Java Agent"}, 'JavaScriptAgent': {'mode': True, 'id': "JavaScript Agent"}, 'HTMLAgent': {'mode': True, 'id': "HTML Agent"}, 'GoogleCloudAgent': {'mode': True, 'id': "Google Cloud Agent"}, 'AndroidDeveloper': {'mode': True, 'id': "Android Developer"}, 'SwiftDeveloper': {'mode': True, 'id': "Swift Developer"}, 'Next.jsAgent': {'mode': True, 'id': "Next.js Agent"}, 'MongoDBAgent': {'mode': True, 'id': "MongoDB Agent"}, 'PyTorchAgent': {'mode': True, 'id': "PyTorch Agent"}, 'ReactAgent': {'mode': True, 'id': "React Agent"}, 'XcodeAgent': {'mode': True, 'id': "Xcode Agent"}, 'AngularJSAgent': {'mode': True, 'id': "AngularJS Agent"}, } userSelectedModel = { "gpt-4o": "gpt-4o", "gemini-pro": "gemini-pro", 'claude-sonnet-3.5': "claude-sonnet-3.5", } model_prefixes = { 'gpt-4o': '@GPT-4o', 'gemini-pro': '@Gemini-PRO', 'claude-sonnet-3.5': '@Claude-Sonnet-3.5', 'PythonAgent': '@Python Agent', 'JavaAgent': '@Java Agent', 'JavaScriptAgent': '@JavaScript Agent', 'HTMLAgent': '@HTML Agent', 'GoogleCloudAgent': '@Google Cloud Agent', 'AndroidDeveloper': '@Android Developer', 'SwiftDeveloper': '@Swift Developer', 'Next.jsAgent': '@Next.js Agent', 'MongoDBAgent': '@MongoDB Agent', 'PyTorchAgent': '@PyTorch Agent', 'ReactAgent': '@React Agent', 'XcodeAgent': '@Xcode Agent', 'AngularJSAgent': '@AngularJS Agent', 'blackboxai-pro': '@BLACKBOXAI-PRO', 'ImageGeneration': '@Image Generation', } model_referers = { "blackboxai": "/?model=blackboxai", "gpt-4o": "/?model=gpt-4o", "gemini-pro": "/?model=gemini-pro", "claude-sonnet-3.5": "/?model=claude-sonnet-3.5", "ImageGeneration": "/?model=ImageGeneration", "PythonAgent": "/?model=PythonAgent", "JavaAgent": "/?model=JavaAgent", "JavaScriptAgent": "/?model=JavaScriptAgent", "HTMLAgent": "/?model=HTMLAgent", "GoogleCloudAgent": "/?model=GoogleCloudAgent", "AndroidDeveloper": "/?model=AndroidDeveloper", "SwiftDeveloper": "/?model=SwiftDeveloper", "Next.jsAgent": "/?model=Next.jsAgent", "MongoDBAgent": "/?model=MongoDBAgent", "PyTorchAgent": "/?model=PyTorchAgent", "ReactAgent": "/?model=ReactAgent", "XcodeAgent": "/?model=XcodeAgent", "AngularJSAgent": "/?model=AngularJSAgent", } model_aliases = { "gemini-flash": "gemini-1.5-flash", "claude-3.5-sonnet": "claude-sonnet-3.5", "flux": "ImageGeneration", } @classmethod def get_model(cls, model: str) -> str: if model in cls.models: return model elif model in cls.model_aliases: return cls.model_aliases[model] else: return cls.default_model @staticmethod def generate_random_string(length: int = 7) -> str: characters = string.ascii_letters + string.digits return ''.join(random.choices(characters, k=length)) @staticmethod def generate_next_action() -> str: return uuid.uuid4().hex @staticmethod def generate_next_router_state_tree() -> str: router_state = [ "", { "children": [ "(chat)", { "children": [ "__PAGE__", {} ] } ] }, None, None, True ] return json.dumps(router_state) @staticmethod def clean_response(text: str) -> str: pattern = r'^\$\@\$v=undefined-rv1\$\@\$' cleaned_text = re.sub(pattern, '', text) # Strip markdown syntax to prevent bold text cleaned_text = strip_markdown(cleaned_text) return cleaned_text @classmethod async def generate_response( cls, model: str, messages: List[Dict[str, str]], proxy: Optional[str] = None, **kwargs ) -> str: model = cls.get_model(model) chat_id = cls.generate_random_string() next_action = cls.generate_next_action() next_router_state_tree = cls.generate_next_router_state_tree() agent_mode = cls.agentMode.get(model, {}) trending_agent_mode = cls.trendingAgentMode.get(model, {}) prefix = cls.model_prefixes.get(model, "") formatted_prompt = "" for message in messages: role = message.get('role', '').capitalize() content = message.get('content', '') if role and content: formatted_prompt += f"{role}: {content}\n" if prefix: formatted_prompt = f"{prefix} {formatted_prompt}".strip() referer_path = cls.model_referers.get(model, f"/?model={model}") referer_url = f"{cls.url}{referer_path}" common_headers = { 'accept': '*/*', 'accept-language': 'en-US,en;q=0.9', 'cache-control': 'no-cache', 'origin': cls.url, 'pragma': 'no-cache', 'priority': 'u=1, i', 'sec-ch-ua': '"Chromium";v="129", "Not=A?Brand";v="8"', 'sec-ch-ua-mobile': '?0', 'sec-ch-ua-platform': '"Linux"', 'sec-fetch-dest': 'empty', 'sec-fetch-mode': 'cors', 'sec-fetch-site': 'same-origin', 'user-agent': 'Mozilla/5.0 (X11; Linux x86_64) ' 'AppleWebKit/537.36 (KHTML, like Gecko) ' 'Chrome/129.0.0.0 Safari/537.36' } headers_api_chat = { 'Content-Type': 'application/json', 'Referer': referer_url } headers_api_chat_combined = {**common_headers, **headers_api_chat} payload_api_chat = { "messages": [ { "id": chat_id, "content": formatted_prompt, "role": "user" } ], "id": chat_id, "previewToken": None, "userId": None, "codeModelMode": True, "agentMode": agent_mode, "trendingAgentMode": trending_agent_mode, "isMicMode": False, "userSystemPrompt": None, "maxTokens": 1024, "playgroundTopP": 0.9, "playgroundTemperature": 0.5, "isChromeExt": False, "githubToken": None, "clickedAnswer2": False, "clickedAnswer3": False, "clickedForceWebSearch": False, "visitFromDelta": False, "mobileClient": False, "webSearchMode": False, "userSelectedModel": cls.userSelectedModel.get(model, model) } async with ClientSession(headers=common_headers, timeout=ClientTimeout(total=60)) as session: try: async with session.post( cls.api_endpoint, headers=headers_api_chat_combined, json=payload_api_chat, proxy=proxy ) as response_api_chat: response_api_chat.raise_for_status() # Instead of reading the entire response, iterate over chunks async for data in response_api_chat.content.iter_chunked(1024): decoded_data = data.decode('utf-8') cleaned_response = cls.clean_response(decoded_data) if model in cls.image_models: match = re.search(r'!\[.*?\]\((https?://[^\)]+)\)', cleaned_response) if match: image_url = match.group(1) image_response = ImageResponseModel(images=image_url, alt="Generated Image") return image_response.dict() else: return cleaned_response else: if '$~~~$' in cleaned_response: final_response = cleaned_response.split('$~~~$')[0].strip() else: final_response = cleaned_response return final_response except ClientResponseError as e: error_text = f"Error {e.status}: {e.message}" try: error_response = await e.response.text() cleaned_error = cls.clean_response(error_response) error_text += f" - {cleaned_error}" except Exception: pass return error_text except Exception as e: return f"Unexpected error during /api/chat request: {str(e)}" @classmethod async def create_async_generator( cls, model: str, messages: List[Dict[str, str]], proxy: Optional[str] = None, websearch: bool = False, **kwargs ) -> AsyncGenerator[str, None]: """ Creates an asynchronous generator for streaming responses from Blackbox AI. Parameters: model (str): Model to use for generating responses. messages (List[Dict[str, str]]): Message history. proxy (Optional[str]): Proxy URL, if needed. websearch (bool): Enables or disables web search mode. **kwargs: Additional keyword arguments. Yields: str: Segments of the generated response. """ model = cls.get_model(model) chat_id = cls.generate_random_string() next_action = cls.generate_next_action() next_router_state_tree = cls.generate_next_router_state_tree() agent_mode = cls.agentMode.get(model, {}) trending_agent_mode = cls.trendingAgentMode.get(model, {}) prefix = cls.model_prefixes.get(model, "") formatted_prompt = "" for message in messages: role = message.get('role', '').capitalize() content = message.get('content', '') if role and content: formatted_prompt += f"{role}: {content}\n" if prefix: formatted_prompt = f"{prefix} {formatted_prompt}".strip() referer_path = cls.model_referers.get(model, f"/?model={model}") referer_url = f"{cls.url}{referer_path}" common_headers = { 'accept': '*/*', 'accept-language': 'en-US,en;q=0.9', 'cache-control': 'no-cache', 'origin': cls.url, 'pragma': 'no-cache', 'priority': 'u=1, i', 'sec-ch-ua': '"Chromium";v="129", "Not=A?Brand";v="8"', 'sec-ch-ua-mobile': '?0', 'sec-ch-ua-platform': '"Linux"', 'sec-fetch-dest': 'empty', 'sec-fetch-mode': 'cors', 'sec-fetch-site': 'same-origin', 'user-agent': 'Mozilla/5.0 (X11; Linux x86_64) ' 'AppleWebKit/537.36 (KHTML, like Gecko) ' 'Chrome/129.0.0.0 Safari/537.36' } headers_api_chat = { 'Content-Type': 'application/json', 'Referer': referer_url } headers_api_chat_combined = {**common_headers, **headers_api_chat} payload_api_chat = { "messages": [ { "id": chat_id, "content": formatted_prompt, "role": "user" } ], "id": chat_id, "previewToken": None, "userId": None, "codeModelMode": True, "agentMode": agent_mode, "trendingAgentMode": trending_agent_mode, "isMicMode": False, "userSystemPrompt": None, "maxTokens": 1024, "playgroundTopP": 0.9, "playgroundTemperature": 0.5, "isChromeExt": False, "githubToken": None, "clickedAnswer2": False, "clickedAnswer3": False, "clickedForceWebSearch": False, "visitFromDelta": False, "mobileClient": False, "webSearchMode": websearch, "userSelectedModel": cls.userSelectedModel.get(model, model) } async with ClientSession(headers=common_headers, timeout=ClientTimeout(total=60)) as session: try: async with session.post( cls.api_endpoint, headers=headers_api_chat_combined, json=payload_api_chat, proxy=proxy ) as response_api_chat: response_api_chat.raise_for_status() # Iterate over the response in chunks async for data in response_api_chat.content.iter_any(): decoded_data = data.decode('utf-8') cleaned_response = cls.clean_response(decoded_data) if model in cls.image_models: match = re.search(r'!\[.*?\]\((https?://[^\)]+)\)', cleaned_response) if match: image_url = match.group(1) image_response = ImageResponseModel(images=image_url, alt="Generated Image") yield f"Image URL: {image_response.images}\n" else: yield cleaned_response else: if '$~~~$' in cleaned_response: final_response = cleaned_response.split('$~~~$')[0].strip() else: final_response = cleaned_response yield f"{final_response}\n" except ClientResponseError as e: error_text = f"Error {e.status}: {e.message}" try: error_response = await e.response.text() cleaned_error = cls.clean_response(error_response) error_text += f" - {cleaned_error}" except Exception: pass yield error_text except Exception as e: yield f"Unexpected error during /api/chat request: {str(e)}" # Custom exception for model not working class ModelNotWorkingException(Exception): def __init__(self, model: str): self.model = model self.message = f"The model '{model}' is currently not working. Please try another model or wait for it to be fixed." super().__init__(self.message) async def cleanup_rate_limit_stores(): """ Periodically cleans up stale entries in the rate_limit_store to prevent memory bloat. """ while True: current_time = time.time() ips_to_delete = [ip for ip, value in rate_limit_store.items() if current_time - value["timestamp"] > RATE_LIMIT_WINDOW * 2] for ip in ips_to_delete: del rate_limit_store[ip] logger.debug(f"Cleaned up rate_limit_store for IP: {ip}") await asyncio.sleep(CLEANUP_INTERVAL) async def rate_limiter_per_ip(request: Request): """ Rate limiter that enforces a limit based on the client's IP address. """ client_ip = request.client.host current_time = time.time() # Initialize or update the count and timestamp if current_time - rate_limit_store[client_ip]["timestamp"] > RATE_LIMIT_WINDOW: rate_limit_store[client_ip] = {"count": 1, "timestamp": current_time} else: if rate_limit_store[client_ip]["count"] >= RATE_LIMIT: logger.warning(f"Rate limit exceeded for IP address: {client_ip}") raise HTTPException(status_code=429, detail='Rate limit exceeded for IP address | NiansuhAI') rate_limit_store[client_ip]["count"] += 1 async def get_api_key(request: Request, authorization: str = Header(None)) -> str: """ Dependency to extract and validate the API key from the Authorization header. """ client_ip = request.client.host if authorization is None or not authorization.startswith('Bearer '): logger.warning(f"Invalid or missing authorization header from IP: {client_ip}") raise HTTPException(status_code=401, detail='Invalid authorization header format') api_key = authorization[7:] if api_key not in API_KEYS: logger.warning(f"Invalid API key attempted: {api_key} from IP: {client_ip}") raise HTTPException(status_code=401, detail='Invalid API key') return api_key # FastAPI app setup app = FastAPI() # Add the cleanup task when the app starts @app.on_event("startup") async def startup_event(): asyncio.create_task(cleanup_rate_limit_stores()) logger.info("Started rate limit store cleanup task.") # Middleware to enhance security and enforce Content-Type for specific endpoints @app.middleware("http") async def security_middleware(request: Request, call_next): client_ip = request.client.host # Enforce that POST requests to /v1/chat/completions must have Content-Type: application/json if request.method == "POST" and request.url.path == "/v1/chat/completions": content_type = request.headers.get("Content-Type") if content_type != "application/json": logger.warning(f"Invalid Content-Type from IP: {client_ip} for path: {request.url.path}") return JSONResponse( status_code=400, content={ "error": { "message": "Content-Type must be application/json", "type": "invalid_request_error", "param": None, "code": None } }, ) response = await call_next(request) return response # Request Models class Message(BaseModel): role: str content: str class ChatRequest(BaseModel): model: str messages: List[Message] temperature: Optional[float] = 1.0 top_p: Optional[float] = 1.0 n: Optional[int] = 1 max_tokens: Optional[int] = None presence_penalty: Optional[float] = 0.0 frequency_penalty: Optional[float] = 0.0 logit_bias: Optional[Dict[str, float]] = None user: Optional[str] = None stream: Optional[bool] = False # Added stream parameter @app.post("/v1/chat/completions", dependencies=[Depends(rate_limiter_per_ip)]) async def chat_completions(request: ChatRequest, req: Request, api_key: str = Depends(get_api_key)): client_ip = req.client.host # Redact user messages only for logging purposes redacted_messages = [{"role": msg.role, "content": "[redacted]"} for msg in request.messages] logger.info(f"Received chat completions request from API key: {api_key} | IP: {client_ip} | Model: {request.model} | Messages: {redacted_messages} | Stream: {request.stream}") try: # Validate that the requested model is available if request.model not in Blackbox.models and request.model not in Blackbox.model_aliases: logger.warning(f"Attempt to use unavailable model: {request.model} from IP: {client_ip}") raise HTTPException(status_code=400, detail="Requested model is not available.") if request.stream: # Streaming response async def content_generator(): async for chunk in Blackbox.create_async_generator( model=request.model, messages=[{"role": msg.role, "content": msg.content} for msg in request.messages], proxy=None, # Add proxy if needed websearch=False # Modify if websearch is needed ): yield chunk logger.info(f"Initiating streaming response for API key: {api_key} | IP: {client_ip}") return StreamingResponse(content_generator(), media_type='text/plain') else: # Non-streaming response response_content = await Blackbox.generate_response( model=request.model, messages=[{"role": msg.role, "content": msg.content} for msg in request.messages], temperature=request.temperature, max_tokens=request.max_tokens ) logger.info(f"Completed response generation for API key: {api_key} | IP: {client_ip}") return { "content": response_content } except ModelNotWorkingException as e: logger.warning(f"Model not working: {e} | IP: {client_ip}") raise HTTPException(status_code=503, detail=str(e)) except HTTPException as he: logger.warning(f"HTTPException: {he.detail} | IP: {client_ip}") raise he except Exception as e: logger.exception(f"An unexpected error occurred while processing the chat completions request from IP: {client_ip}.") raise HTTPException(status_code=500, detail=str(e)) # Endpoint: GET /v1/models @app.get("/v1/models", dependencies=[Depends(rate_limiter_per_ip)]) async def get_models(req: Request): client_ip = req.client.host logger.info(f"Fetching available models from IP: {client_ip}") return {"data": [{"id": model, "object": "model"} for model in Blackbox.models]} # Endpoint: GET /v1/health @app.get("/v1/health", dependencies=[Depends(rate_limiter_per_ip)]) async def health_check(req: Request): client_ip = req.client.host logger.info(f"Health check requested from IP: {client_ip}") return {"status": "ok"} # Custom exception handler to match OpenAI's error format @app.exception_handler(HTTPException) async def http_exception_handler(request: Request, exc: HTTPException): client_ip = request.client.host logger.error(f"HTTPException: {exc.detail} | Path: {request.url.path} | IP: {client_ip}") return JSONResponse( status_code=exc.status_code, content={ "error": { "message": exc.detail, "type": "invalid_request_error", "param": None, "code": None } }, ) if __name__ == "__main__": import uvicorn uvicorn.run(app, host="0.0.0.0", port=8000)