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def _check_thread(self):
"""Check that the current thread is the thread running the event loop.
Non-thread-safe methods of this class make this assumption and will
likely behave incorrectly when the assumption is violated.
Should only be called when (self._debug == True). The caller is
responsible for checking this condition for performance reasons.
"""
if self._thread_id is None:
return
thread_id = threading.get_ident()
if thread_id != self._thread_id:
raise RuntimeError(
"Non-thread-safe operation invoked on an event loop other "
"than the current one") | Check that the current thread is the thread running the event loop.
Non-thread-safe methods of this class make this assumption and will
likely behave incorrectly when the assumption is violated.
Should only be called when (self._debug == True). The caller is
responsible for checking this condition for performance reasons. | _check_thread | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | MIT |
def call_soon_threadsafe(self, callback, *args, context=None):
"""Like call_soon(), but thread-safe."""
self._check_closed()
if self._debug:
self._check_callback(callback, 'call_soon_threadsafe')
handle = self._call_soon(callback, args, context)
if handle._source_traceback:
del handle._source_traceback[-1]
self._write_to_self()
return handle | Like call_soon(), but thread-safe. | call_soon_threadsafe | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | MIT |
async def create_connection(
self, protocol_factory, host=None, port=None,
*, ssl=None, family=0,
proto=0, flags=0, sock=None,
local_addr=None, server_hostname=None,
ssl_handshake_timeout=None):
"""Connect to a TCP server.
Create a streaming transport connection to a given Internet host and
port: socket family AF_INET or socket.AF_INET6 depending on host (or
family if specified), socket type SOCK_STREAM. protocol_factory must be
a callable returning a protocol instance.
This method is a coroutine which will try to establish the connection
in the background. When successful, the coroutine returns a
(transport, protocol) pair.
"""
if server_hostname is not None and not ssl:
raise ValueError('server_hostname is only meaningful with ssl')
if server_hostname is None and ssl:
# Use host as default for server_hostname. It is an error
# if host is empty or not set, e.g. when an
# already-connected socket was passed or when only a port
# is given. To avoid this error, you can pass
# server_hostname='' -- this will bypass the hostname
# check. (This also means that if host is a numeric
# IP/IPv6 address, we will attempt to verify that exact
# address; this will probably fail, but it is possible to
# create a certificate for a specific IP address, so we
# don't judge it here.)
if not host:
raise ValueError('You must set server_hostname '
'when using ssl without a host')
server_hostname = host
if ssl_handshake_timeout is not None and not ssl:
raise ValueError(
'ssl_handshake_timeout is only meaningful with ssl')
if host is not None or port is not None:
if sock is not None:
raise ValueError(
'host/port and sock can not be specified at the same time')
infos = await self._ensure_resolved(
(host, port), family=family,
type=socket.SOCK_STREAM, proto=proto, flags=flags, loop=self)
if not infos:
raise OSError('getaddrinfo() returned empty list')
if local_addr is not None:
laddr_infos = await self._ensure_resolved(
local_addr, family=family,
type=socket.SOCK_STREAM, proto=proto,
flags=flags, loop=self)
if not laddr_infos:
raise OSError('getaddrinfo() returned empty list')
exceptions = []
for family, type, proto, cname, address in infos:
try:
sock = socket.socket(family=family, type=type, proto=proto)
sock.setblocking(False)
if local_addr is not None:
for _, _, _, _, laddr in laddr_infos:
try:
sock.bind(laddr)
break
except OSError as exc:
msg = (
f'error while attempting to bind on '
f'address {laddr!r}: '
f'{exc.strerror.lower()}'
)
exc = OSError(exc.errno, msg)
exceptions.append(exc)
else:
sock.close()
sock = None
continue
if self._debug:
logger.debug("connect %r to %r", sock, address)
await self.sock_connect(sock, address)
except OSError as exc:
if sock is not None:
sock.close()
exceptions.append(exc)
except:
if sock is not None:
sock.close()
raise
else:
break
else:
if len(exceptions) == 1:
raise exceptions[0]
else:
# If they all have the same str(), raise one.
model = str(exceptions[0])
if all(str(exc) == model for exc in exceptions):
raise exceptions[0]
# Raise a combined exception so the user can see all
# the various error messages.
raise OSError('Multiple exceptions: {}'.format(
', '.join(str(exc) for exc in exceptions)))
else:
if sock is None:
raise ValueError(
'host and port was not specified and no sock specified')
if sock.type != socket.SOCK_STREAM:
# We allow AF_INET, AF_INET6, AF_UNIX as long as they
# are SOCK_STREAM.
# We support passing AF_UNIX sockets even though we have
# a dedicated API for that: create_unix_connection.
# Disallowing AF_UNIX in this method, breaks backwards
# compatibility.
raise ValueError(
f'A Stream Socket was expected, got {sock!r}')
transport, protocol = await self._create_connection_transport(
sock, protocol_factory, ssl, server_hostname,
ssl_handshake_timeout=ssl_handshake_timeout)
if self._debug:
# Get the socket from the transport because SSL transport closes
# the old socket and creates a new SSL socket
sock = transport.get_extra_info('socket')
logger.debug("%r connected to %s:%r: (%r, %r)",
sock, host, port, transport, protocol)
return transport, protocol | Connect to a TCP server.
Create a streaming transport connection to a given Internet host and
port: socket family AF_INET or socket.AF_INET6 depending on host (or
family if specified), socket type SOCK_STREAM. protocol_factory must be
a callable returning a protocol instance.
This method is a coroutine which will try to establish the connection
in the background. When successful, the coroutine returns a
(transport, protocol) pair. | create_connection | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | MIT |
async def sendfile(self, transport, file, offset=0, count=None,
*, fallback=True):
"""Send a file to transport.
Return the total number of bytes which were sent.
The method uses high-performance os.sendfile if available.
file must be a regular file object opened in binary mode.
offset tells from where to start reading the file. If specified,
count is the total number of bytes to transmit as opposed to
sending the file until EOF is reached. File position is updated on
return or also in case of error in which case file.tell()
can be used to figure out the number of bytes
which were sent.
fallback set to True makes asyncio to manually read and send
the file when the platform does not support the sendfile syscall
(e.g. Windows or SSL socket on Unix).
Raise SendfileNotAvailableError if the system does not support
sendfile syscall and fallback is False.
"""
if transport.is_closing():
raise RuntimeError("Transport is closing")
mode = getattr(transport, '_sendfile_compatible',
constants._SendfileMode.UNSUPPORTED)
if mode is constants._SendfileMode.UNSUPPORTED:
raise RuntimeError(
f"sendfile is not supported for transport {transport!r}")
if mode is constants._SendfileMode.TRY_NATIVE:
try:
return await self._sendfile_native(transport, file,
offset, count)
except events.SendfileNotAvailableError as exc:
if not fallback:
raise
if not fallback:
raise RuntimeError(
f"fallback is disabled and native sendfile is not "
f"supported for transport {transport!r}")
return await self._sendfile_fallback(transport, file,
offset, count) | Send a file to transport.
Return the total number of bytes which were sent.
The method uses high-performance os.sendfile if available.
file must be a regular file object opened in binary mode.
offset tells from where to start reading the file. If specified,
count is the total number of bytes to transmit as opposed to
sending the file until EOF is reached. File position is updated on
return or also in case of error in which case file.tell()
can be used to figure out the number of bytes
which were sent.
fallback set to True makes asyncio to manually read and send
the file when the platform does not support the sendfile syscall
(e.g. Windows or SSL socket on Unix).
Raise SendfileNotAvailableError if the system does not support
sendfile syscall and fallback is False. | sendfile | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | MIT |
async def start_tls(self, transport, protocol, sslcontext, *,
server_side=False,
server_hostname=None,
ssl_handshake_timeout=None):
"""Upgrade transport to TLS.
Return a new transport that *protocol* should start using
immediately.
"""
if ssl is None:
raise RuntimeError('Python ssl module is not available')
if not isinstance(sslcontext, ssl.SSLContext):
raise TypeError(
f'sslcontext is expected to be an instance of ssl.SSLContext, '
f'got {sslcontext!r}')
if not getattr(transport, '_start_tls_compatible', False):
raise TypeError(
f'transport {transport!r} is not supported by start_tls()')
waiter = self.create_future()
ssl_protocol = sslproto.SSLProtocol(
self, protocol, sslcontext, waiter,
server_side, server_hostname,
ssl_handshake_timeout=ssl_handshake_timeout,
call_connection_made=False)
# Pause early so that "ssl_protocol.data_received()" doesn't
# have a chance to get called before "ssl_protocol.connection_made()".
transport.pause_reading()
transport.set_protocol(ssl_protocol)
conmade_cb = self.call_soon(ssl_protocol.connection_made, transport)
resume_cb = self.call_soon(transport.resume_reading)
try:
await waiter
except Exception:
transport.close()
conmade_cb.cancel()
resume_cb.cancel()
raise
return ssl_protocol._app_transport | Upgrade transport to TLS.
Return a new transport that *protocol* should start using
immediately. | start_tls | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | MIT |
async def create_datagram_endpoint(self, protocol_factory,
local_addr=None, remote_addr=None, *,
family=0, proto=0, flags=0,
reuse_address=_unset, reuse_port=None,
allow_broadcast=None, sock=None):
"""Create datagram connection."""
if sock is not None:
if sock.type != socket.SOCK_DGRAM:
raise ValueError(
f'A UDP Socket was expected, got {sock!r}')
if (local_addr or remote_addr or
family or proto or flags or
reuse_port or allow_broadcast):
# show the problematic kwargs in exception msg
opts = dict(local_addr=local_addr, remote_addr=remote_addr,
family=family, proto=proto, flags=flags,
reuse_address=reuse_address, reuse_port=reuse_port,
allow_broadcast=allow_broadcast)
problems = ', '.join(f'{k}={v}' for k, v in opts.items() if v)
raise ValueError(
f'socket modifier keyword arguments can not be used '
f'when sock is specified. ({problems})')
sock.setblocking(False)
r_addr = None
else:
if not (local_addr or remote_addr):
if family == 0:
raise ValueError('unexpected address family')
addr_pairs_info = (((family, proto), (None, None)),)
elif hasattr(socket, 'AF_UNIX') and family == socket.AF_UNIX:
for addr in (local_addr, remote_addr):
if addr is not None and not isinstance(addr, str):
raise TypeError('string is expected')
addr_pairs_info = (((family, proto),
(local_addr, remote_addr)), )
else:
# join address by (family, protocol)
addr_infos = collections.OrderedDict()
for idx, addr in ((0, local_addr), (1, remote_addr)):
if addr is not None:
assert isinstance(addr, tuple) and len(addr) == 2, (
'2-tuple is expected')
infos = await self._ensure_resolved(
addr, family=family, type=socket.SOCK_DGRAM,
proto=proto, flags=flags, loop=self)
if not infos:
raise OSError('getaddrinfo() returned empty list')
for fam, _, pro, _, address in infos:
key = (fam, pro)
if key not in addr_infos:
addr_infos[key] = [None, None]
addr_infos[key][idx] = address
# each addr has to have info for each (family, proto) pair
addr_pairs_info = [
(key, addr_pair) for key, addr_pair in addr_infos.items()
if not ((local_addr and addr_pair[0] is None) or
(remote_addr and addr_pair[1] is None))]
if not addr_pairs_info:
raise ValueError('can not get address information')
exceptions = []
# bpo-37228
if reuse_address is not _unset:
if reuse_address:
raise ValueError("Passing `reuse_address=True` is no "
"longer supported, as the usage of "
"SO_REUSEPORT in UDP poses a significant "
"security concern.")
else:
warnings.warn("The *reuse_address* parameter has been "
"deprecated as of 3.7.6 and is scheduled "
"for removal in 3.11.", DeprecationWarning,
stacklevel=2)
for ((family, proto),
(local_address, remote_address)) in addr_pairs_info:
sock = None
r_addr = None
try:
sock = socket.socket(
family=family, type=socket.SOCK_DGRAM, proto=proto)
if reuse_port:
_set_reuseport(sock)
if allow_broadcast:
sock.setsockopt(
socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
sock.setblocking(False)
if local_addr:
sock.bind(local_address)
if remote_addr:
if not allow_broadcast:
await self.sock_connect(sock, remote_address)
r_addr = remote_address
except OSError as exc:
if sock is not None:
sock.close()
exceptions.append(exc)
except:
if sock is not None:
sock.close()
raise
else:
break
else:
raise exceptions[0]
protocol = protocol_factory()
waiter = self.create_future()
transport = self._make_datagram_transport(
sock, protocol, r_addr, waiter)
if self._debug:
if local_addr:
logger.info("Datagram endpoint local_addr=%r remote_addr=%r "
"created: (%r, %r)",
local_addr, remote_addr, transport, protocol)
else:
logger.debug("Datagram endpoint remote_addr=%r created: "
"(%r, %r)",
remote_addr, transport, protocol)
try:
await waiter
except:
transport.close()
raise
return transport, protocol | Create datagram connection. | create_datagram_endpoint | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | MIT |
async def create_server(
self, protocol_factory, host=None, port=None,
*,
family=socket.AF_UNSPEC,
flags=socket.AI_PASSIVE,
sock=None,
backlog=100,
ssl=None,
reuse_address=None,
reuse_port=None,
ssl_handshake_timeout=None,
start_serving=True):
"""Create a TCP server.
The host parameter can be a string, in that case the TCP server is
bound to host and port.
The host parameter can also be a sequence of strings and in that case
the TCP server is bound to all hosts of the sequence. If a host
appears multiple times (possibly indirectly e.g. when hostnames
resolve to the same IP address), the server is only bound once to that
host.
Return a Server object which can be used to stop the service.
This method is a coroutine.
"""
if isinstance(ssl, bool):
raise TypeError('ssl argument must be an SSLContext or None')
if ssl_handshake_timeout is not None and ssl is None:
raise ValueError(
'ssl_handshake_timeout is only meaningful with ssl')
if host is not None or port is not None:
if sock is not None:
raise ValueError(
'host/port and sock can not be specified at the same time')
if reuse_address is None:
reuse_address = os.name == 'posix' and sys.platform != 'cygwin'
sockets = []
if host == '':
hosts = [None]
elif (isinstance(host, str) or
not isinstance(host, collections.abc.Iterable)):
hosts = [host]
else:
hosts = host
fs = [self._create_server_getaddrinfo(host, port, family=family,
flags=flags)
for host in hosts]
infos = await tasks.gather(*fs, loop=self)
infos = set(itertools.chain.from_iterable(infos))
completed = False
try:
for res in infos:
af, socktype, proto, canonname, sa = res
try:
sock = socket.socket(af, socktype, proto)
except socket.error:
# Assume it's a bad family/type/protocol combination.
if self._debug:
logger.warning('create_server() failed to create '
'socket.socket(%r, %r, %r)',
af, socktype, proto, exc_info=True)
continue
sockets.append(sock)
if reuse_address:
sock.setsockopt(
socket.SOL_SOCKET, socket.SO_REUSEADDR, True)
if reuse_port:
_set_reuseport(sock)
# Disable IPv4/IPv6 dual stack support (enabled by
# default on Linux) which makes a single socket
# listen on both address families.
if (_HAS_IPv6 and
af == socket.AF_INET6 and
hasattr(socket, 'IPPROTO_IPV6')):
sock.setsockopt(socket.IPPROTO_IPV6,
socket.IPV6_V6ONLY,
True)
try:
sock.bind(sa)
except OSError as err:
raise OSError(err.errno, 'error while attempting '
'to bind on address %r: %s'
% (sa, err.strerror.lower())) from None
completed = True
finally:
if not completed:
for sock in sockets:
sock.close()
else:
if sock is None:
raise ValueError('Neither host/port nor sock were specified')
if sock.type != socket.SOCK_STREAM:
raise ValueError(f'A Stream Socket was expected, got {sock!r}')
sockets = [sock]
for sock in sockets:
sock.setblocking(False)
server = Server(self, sockets, protocol_factory,
ssl, backlog, ssl_handshake_timeout)
if start_serving:
server._start_serving()
# Skip one loop iteration so that all 'loop.add_reader'
# go through.
await tasks.sleep(0, loop=self)
if self._debug:
logger.info("%r is serving", server)
return server | Create a TCP server.
The host parameter can be a string, in that case the TCP server is
bound to host and port.
The host parameter can also be a sequence of strings and in that case
the TCP server is bound to all hosts of the sequence. If a host
appears multiple times (possibly indirectly e.g. when hostnames
resolve to the same IP address), the server is only bound once to that
host.
Return a Server object which can be used to stop the service.
This method is a coroutine. | create_server | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | MIT |
async def connect_accepted_socket(
self, protocol_factory, sock,
*, ssl=None,
ssl_handshake_timeout=None):
"""Handle an accepted connection.
This is used by servers that accept connections outside of
asyncio but that use asyncio to handle connections.
This method is a coroutine. When completed, the coroutine
returns a (transport, protocol) pair.
"""
if sock.type != socket.SOCK_STREAM:
raise ValueError(f'A Stream Socket was expected, got {sock!r}')
if ssl_handshake_timeout is not None and not ssl:
raise ValueError(
'ssl_handshake_timeout is only meaningful with ssl')
transport, protocol = await self._create_connection_transport(
sock, protocol_factory, ssl, '', server_side=True,
ssl_handshake_timeout=ssl_handshake_timeout)
if self._debug:
# Get the socket from the transport because SSL transport closes
# the old socket and creates a new SSL socket
sock = transport.get_extra_info('socket')
logger.debug("%r handled: (%r, %r)", sock, transport, protocol)
return transport, protocol | Handle an accepted connection.
This is used by servers that accept connections outside of
asyncio but that use asyncio to handle connections.
This method is a coroutine. When completed, the coroutine
returns a (transport, protocol) pair. | connect_accepted_socket | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | MIT |
def get_exception_handler(self):
"""Return an exception handler, or None if the default one is in use.
"""
return self._exception_handler | Return an exception handler, or None if the default one is in use. | get_exception_handler | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | MIT |
def set_exception_handler(self, handler):
"""Set handler as the new event loop exception handler.
If handler is None, the default exception handler will
be set.
If handler is a callable object, it should have a
signature matching '(loop, context)', where 'loop'
will be a reference to the active event loop, 'context'
will be a dict object (see `call_exception_handler()`
documentation for details about context).
"""
if handler is not None and not callable(handler):
raise TypeError(f'A callable object or None is expected, '
f'got {handler!r}')
self._exception_handler = handler | Set handler as the new event loop exception handler.
If handler is None, the default exception handler will
be set.
If handler is a callable object, it should have a
signature matching '(loop, context)', where 'loop'
will be a reference to the active event loop, 'context'
will be a dict object (see `call_exception_handler()`
documentation for details about context). | set_exception_handler | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | MIT |
def default_exception_handler(self, context):
"""Default exception handler.
This is called when an exception occurs and no exception
handler is set, and can be called by a custom exception
handler that wants to defer to the default behavior.
This default handler logs the error message and other
context-dependent information. In debug mode, a truncated
stack trace is also appended showing where the given object
(e.g. a handle or future or task) was created, if any.
The context parameter has the same meaning as in
`call_exception_handler()`.
"""
message = context.get('message')
if not message:
message = 'Unhandled exception in event loop'
exception = context.get('exception')
if exception is not None:
exc_info = (type(exception), exception, exception.__traceback__)
else:
exc_info = False
if ('source_traceback' not in context and
self._current_handle is not None and
self._current_handle._source_traceback):
context['handle_traceback'] = \
self._current_handle._source_traceback
log_lines = [message]
for key in sorted(context):
if key in {'message', 'exception'}:
continue
value = context[key]
if key == 'source_traceback':
tb = ''.join(traceback.format_list(value))
value = 'Object created at (most recent call last):\n'
value += tb.rstrip()
elif key == 'handle_traceback':
tb = ''.join(traceback.format_list(value))
value = 'Handle created at (most recent call last):\n'
value += tb.rstrip()
else:
value = repr(value)
log_lines.append(f'{key}: {value}')
logger.error('\n'.join(log_lines), exc_info=exc_info) | Default exception handler.
This is called when an exception occurs and no exception
handler is set, and can be called by a custom exception
handler that wants to defer to the default behavior.
This default handler logs the error message and other
context-dependent information. In debug mode, a truncated
stack trace is also appended showing where the given object
(e.g. a handle or future or task) was created, if any.
The context parameter has the same meaning as in
`call_exception_handler()`. | default_exception_handler | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | MIT |
def call_exception_handler(self, context):
"""Call the current event loop's exception handler.
The context argument is a dict containing the following keys:
- 'message': Error message;
- 'exception' (optional): Exception object;
- 'future' (optional): Future instance;
- 'task' (optional): Task instance;
- 'handle' (optional): Handle instance;
- 'protocol' (optional): Protocol instance;
- 'transport' (optional): Transport instance;
- 'socket' (optional): Socket instance;
- 'asyncgen' (optional): Asynchronous generator that caused
the exception.
New keys maybe introduced in the future.
Note: do not overload this method in an event loop subclass.
For custom exception handling, use the
`set_exception_handler()` method.
"""
if self._exception_handler is None:
try:
self.default_exception_handler(context)
except Exception:
# Second protection layer for unexpected errors
# in the default implementation, as well as for subclassed
# event loops with overloaded "default_exception_handler".
logger.error('Exception in default exception handler',
exc_info=True)
else:
try:
self._exception_handler(self, context)
except Exception as exc:
# Exception in the user set custom exception handler.
try:
# Let's try default handler.
self.default_exception_handler({
'message': 'Unhandled error in exception handler',
'exception': exc,
'context': context,
})
except Exception:
# Guard 'default_exception_handler' in case it is
# overloaded.
logger.error('Exception in default exception handler '
'while handling an unexpected error '
'in custom exception handler',
exc_info=True) | Call the current event loop's exception handler.
The context argument is a dict containing the following keys:
- 'message': Error message;
- 'exception' (optional): Exception object;
- 'future' (optional): Future instance;
- 'task' (optional): Task instance;
- 'handle' (optional): Handle instance;
- 'protocol' (optional): Protocol instance;
- 'transport' (optional): Transport instance;
- 'socket' (optional): Socket instance;
- 'asyncgen' (optional): Asynchronous generator that caused
the exception.
New keys maybe introduced in the future.
Note: do not overload this method in an event loop subclass.
For custom exception handling, use the
`set_exception_handler()` method. | call_exception_handler | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | MIT |
def _add_callback(self, handle):
"""Add a Handle to _scheduled (TimerHandle) or _ready."""
assert isinstance(handle, events.Handle), 'A Handle is required here'
if handle._cancelled:
return
assert not isinstance(handle, events.TimerHandle)
self._ready.append(handle) | Add a Handle to _scheduled (TimerHandle) or _ready. | _add_callback | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | MIT |
def _add_callback_signalsafe(self, handle):
"""Like _add_callback() but called from a signal handler."""
self._add_callback(handle)
self._write_to_self() | Like _add_callback() but called from a signal handler. | _add_callback_signalsafe | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | MIT |
def _run_once(self):
"""Run one full iteration of the event loop.
This calls all currently ready callbacks, polls for I/O,
schedules the resulting callbacks, and finally schedules
'call_later' callbacks.
"""
sched_count = len(self._scheduled)
if (sched_count > _MIN_SCHEDULED_TIMER_HANDLES and
self._timer_cancelled_count / sched_count >
_MIN_CANCELLED_TIMER_HANDLES_FRACTION):
# Remove delayed calls that were cancelled if their number
# is too high
new_scheduled = []
for handle in self._scheduled:
if handle._cancelled:
handle._scheduled = False
else:
new_scheduled.append(handle)
heapq.heapify(new_scheduled)
self._scheduled = new_scheduled
self._timer_cancelled_count = 0
else:
# Remove delayed calls that were cancelled from head of queue.
while self._scheduled and self._scheduled[0]._cancelled:
self._timer_cancelled_count -= 1
handle = heapq.heappop(self._scheduled)
handle._scheduled = False
timeout = None
if self._ready or self._stopping:
timeout = 0
elif self._scheduled:
# Compute the desired timeout.
when = self._scheduled[0]._when
timeout = min(max(0, when - self.time()), MAXIMUM_SELECT_TIMEOUT)
if self._debug and timeout != 0:
t0 = self.time()
event_list = self._selector.select(timeout)
dt = self.time() - t0
if dt >= 1.0:
level = logging.INFO
else:
level = logging.DEBUG
nevent = len(event_list)
if timeout is None:
logger.log(level, 'poll took %.3f ms: %s events',
dt * 1e3, nevent)
elif nevent:
logger.log(level,
'poll %.3f ms took %.3f ms: %s events',
timeout * 1e3, dt * 1e3, nevent)
elif dt >= 1.0:
logger.log(level,
'poll %.3f ms took %.3f ms: timeout',
timeout * 1e3, dt * 1e3)
else:
event_list = self._selector.select(timeout)
self._process_events(event_list)
# Handle 'later' callbacks that are ready.
end_time = self.time() + self._clock_resolution
while self._scheduled:
handle = self._scheduled[0]
if handle._when >= end_time:
break
handle = heapq.heappop(self._scheduled)
handle._scheduled = False
self._ready.append(handle)
# This is the only place where callbacks are actually *called*.
# All other places just add them to ready.
# Note: We run all currently scheduled callbacks, but not any
# callbacks scheduled by callbacks run this time around --
# they will be run the next time (after another I/O poll).
# Use an idiom that is thread-safe without using locks.
ntodo = len(self._ready)
for i in range(ntodo):
handle = self._ready.popleft()
if handle._cancelled:
continue
if self._debug:
try:
self._current_handle = handle
t0 = self.time()
handle._run()
dt = self.time() - t0
if dt >= self.slow_callback_duration:
logger.warning('Executing %s took %.3f seconds',
_format_handle(handle), dt)
finally:
self._current_handle = None
else:
handle._run()
handle = None # Needed to break cycles when an exception occurs. | Run one full iteration of the event loop.
This calls all currently ready callbacks, polls for I/O,
schedules the resulting callbacks, and finally schedules
'call_later' callbacks. | _run_once | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_events.py | MIT |
def _remove_writer(self, fd):
"""Remove a writer callback."""
if self.is_closed():
return False
try:
key = self._selector.get_key(fd)
except KeyError:
return False
else:
mask, (reader, writer) = key.events, key.data
# Remove both writer and connector.
mask &= ~selectors.EVENT_WRITE
if not mask:
self._selector.unregister(fd)
else:
self._selector.modify(fd, mask, (reader, None))
if writer is not None:
writer.cancel()
return True
else:
return False | Remove a writer callback. | _remove_writer | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/selector_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/selector_events.py | MIT |
def add_reader(self, fd, callback, *args):
"""Add a reader callback."""
self._ensure_fd_no_transport(fd)
return self._add_reader(fd, callback, *args) | Add a reader callback. | add_reader | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/selector_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/selector_events.py | MIT |
def remove_reader(self, fd):
"""Remove a reader callback."""
self._ensure_fd_no_transport(fd)
return self._remove_reader(fd) | Remove a reader callback. | remove_reader | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/selector_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/selector_events.py | MIT |
def add_writer(self, fd, callback, *args):
"""Add a writer callback.."""
self._ensure_fd_no_transport(fd)
return self._add_writer(fd, callback, *args) | Add a writer callback.. | add_writer | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/selector_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/selector_events.py | MIT |
async def sock_recv(self, sock, n):
"""Receive data from the socket.
The return value is a bytes object representing the data received.
The maximum amount of data to be received at once is specified by
nbytes.
"""
_check_ssl_socket(sock)
if self._debug and sock.gettimeout() != 0:
raise ValueError("the socket must be non-blocking")
fut = self.create_future()
self._sock_recv(fut, None, sock, n)
return await fut | Receive data from the socket.
The return value is a bytes object representing the data received.
The maximum amount of data to be received at once is specified by
nbytes. | sock_recv | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/selector_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/selector_events.py | MIT |
async def sock_recv_into(self, sock, buf):
"""Receive data from the socket.
The received data is written into *buf* (a writable buffer).
The return value is the number of bytes written.
"""
_check_ssl_socket(sock)
if self._debug and sock.gettimeout() != 0:
raise ValueError("the socket must be non-blocking")
fut = self.create_future()
self._sock_recv_into(fut, None, sock, buf)
return await fut | Receive data from the socket.
The received data is written into *buf* (a writable buffer).
The return value is the number of bytes written. | sock_recv_into | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/selector_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/selector_events.py | MIT |
async def sock_sendall(self, sock, data):
"""Send data to the socket.
The socket must be connected to a remote socket. This method continues
to send data from data until either all data has been sent or an
error occurs. None is returned on success. On error, an exception is
raised, and there is no way to determine how much data, if any, was
successfully processed by the receiving end of the connection.
"""
_check_ssl_socket(sock)
if self._debug and sock.gettimeout() != 0:
raise ValueError("the socket must be non-blocking")
fut = self.create_future()
if data:
self._sock_sendall(fut, None, sock, data)
else:
fut.set_result(None)
return await fut | Send data to the socket.
The socket must be connected to a remote socket. This method continues
to send data from data until either all data has been sent or an
error occurs. None is returned on success. On error, an exception is
raised, and there is no way to determine how much data, if any, was
successfully processed by the receiving end of the connection. | sock_sendall | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/selector_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/selector_events.py | MIT |
async def sock_connect(self, sock, address):
"""Connect to a remote socket at address.
This method is a coroutine.
"""
_check_ssl_socket(sock)
if self._debug and sock.gettimeout() != 0:
raise ValueError("the socket must be non-blocking")
if not hasattr(socket, 'AF_UNIX') or sock.family != socket.AF_UNIX:
resolved = await self._ensure_resolved(
address, family=sock.family, proto=sock.proto, loop=self)
_, _, _, _, address = resolved[0]
fut = self.create_future()
self._sock_connect(fut, sock, address)
return await fut | Connect to a remote socket at address.
This method is a coroutine. | sock_connect | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/selector_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/selector_events.py | MIT |
async def sock_accept(self, sock):
"""Accept a connection.
The socket must be bound to an address and listening for connections.
The return value is a pair (conn, address) where conn is a new socket
object usable to send and receive data on the connection, and address
is the address bound to the socket on the other end of the connection.
"""
_check_ssl_socket(sock)
if self._debug and sock.gettimeout() != 0:
raise ValueError("the socket must be non-blocking")
fut = self.create_future()
self._sock_accept(fut, False, sock)
return await fut | Accept a connection.
The socket must be bound to an address and listening for connections.
The return value is a pair (conn, address) where conn is a new socket
object usable to send and receive data on the connection, and address
is the address bound to the socket on the other end of the connection. | sock_accept | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/selector_events.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/selector_events.py | MIT |
def __init__(self, *, loop=None):
"""Initialize the future.
The optional event_loop argument allows explicitly setting the event
loop object used by the future. If it's not provided, the future uses
the default event loop.
"""
if loop is None:
self._loop = events.get_event_loop()
else:
self._loop = loop
self._callbacks = []
if self._loop.get_debug():
self._source_traceback = format_helpers.extract_stack(
sys._getframe(1)) | Initialize the future.
The optional event_loop argument allows explicitly setting the event
loop object used by the future. If it's not provided, the future uses
the default event loop. | __init__ | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | MIT |
def get_loop(self):
"""Return the event loop the Future is bound to."""
loop = self._loop
if loop is None:
raise RuntimeError("Future object is not initialized.")
return loop | Return the event loop the Future is bound to. | get_loop | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | MIT |
def cancel(self):
"""Cancel the future and schedule callbacks.
If the future is already done or cancelled, return False. Otherwise,
change the future's state to cancelled, schedule the callbacks and
return True.
"""
self.__log_traceback = False
if self._state != _PENDING:
return False
self._state = _CANCELLED
self.__schedule_callbacks()
return True | Cancel the future and schedule callbacks.
If the future is already done or cancelled, return False. Otherwise,
change the future's state to cancelled, schedule the callbacks and
return True. | cancel | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | MIT |
def __schedule_callbacks(self):
"""Internal: Ask the event loop to call all callbacks.
The callbacks are scheduled to be called as soon as possible. Also
clears the callback list.
"""
callbacks = self._callbacks[:]
if not callbacks:
return
self._callbacks[:] = []
for callback, ctx in callbacks:
self._loop.call_soon(callback, self, context=ctx) | Internal: Ask the event loop to call all callbacks.
The callbacks are scheduled to be called as soon as possible. Also
clears the callback list. | __schedule_callbacks | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | MIT |
def cancelled(self):
"""Return True if the future was cancelled."""
return self._state == _CANCELLED | Return True if the future was cancelled. | cancelled | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | MIT |
def done(self):
"""Return True if the future is done.
Done means either that a result / exception are available, or that the
future was cancelled.
"""
return self._state != _PENDING | Return True if the future is done.
Done means either that a result / exception are available, or that the
future was cancelled. | done | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | MIT |
def result(self):
"""Return the result this future represents.
If the future has been cancelled, raises CancelledError. If the
future's result isn't yet available, raises InvalidStateError. If
the future is done and has an exception set, this exception is raised.
"""
if self._state == _CANCELLED:
raise CancelledError
if self._state != _FINISHED:
raise InvalidStateError('Result is not ready.')
self.__log_traceback = False
if self._exception is not None:
raise self._exception
return self._result | Return the result this future represents.
If the future has been cancelled, raises CancelledError. If the
future's result isn't yet available, raises InvalidStateError. If
the future is done and has an exception set, this exception is raised. | result | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | MIT |
def exception(self):
"""Return the exception that was set on this future.
The exception (or None if no exception was set) is returned only if
the future is done. If the future has been cancelled, raises
CancelledError. If the future isn't done yet, raises
InvalidStateError.
"""
if self._state == _CANCELLED:
raise CancelledError
if self._state != _FINISHED:
raise InvalidStateError('Exception is not set.')
self.__log_traceback = False
return self._exception | Return the exception that was set on this future.
The exception (or None if no exception was set) is returned only if
the future is done. If the future has been cancelled, raises
CancelledError. If the future isn't done yet, raises
InvalidStateError. | exception | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | MIT |
def add_done_callback(self, fn, *, context=None):
"""Add a callback to be run when the future becomes done.
The callback is called with a single argument - the future object. If
the future is already done when this is called, the callback is
scheduled with call_soon.
"""
if self._state != _PENDING:
self._loop.call_soon(fn, self, context=context)
else:
if context is None:
context = contextvars.copy_context()
self._callbacks.append((fn, context)) | Add a callback to be run when the future becomes done.
The callback is called with a single argument - the future object. If
the future is already done when this is called, the callback is
scheduled with call_soon. | add_done_callback | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | MIT |
def remove_done_callback(self, fn):
"""Remove all instances of a callback from the "call when done" list.
Returns the number of callbacks removed.
"""
filtered_callbacks = [(f, ctx)
for (f, ctx) in self._callbacks
if f != fn]
removed_count = len(self._callbacks) - len(filtered_callbacks)
if removed_count:
self._callbacks[:] = filtered_callbacks
return removed_count | Remove all instances of a callback from the "call when done" list.
Returns the number of callbacks removed. | remove_done_callback | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | MIT |
def set_result(self, result):
"""Mark the future done and set its result.
If the future is already done when this method is called, raises
InvalidStateError.
"""
if self._state != _PENDING:
raise InvalidStateError('{}: {!r}'.format(self._state, self))
self._result = result
self._state = _FINISHED
self.__schedule_callbacks() | Mark the future done and set its result.
If the future is already done when this method is called, raises
InvalidStateError. | set_result | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | MIT |
def set_exception(self, exception):
"""Mark the future done and set an exception.
If the future is already done when this method is called, raises
InvalidStateError.
"""
if self._state != _PENDING:
raise InvalidStateError('{}: {!r}'.format(self._state, self))
if isinstance(exception, type):
exception = exception()
if type(exception) is StopIteration:
raise TypeError("StopIteration interacts badly with generators "
"and cannot be raised into a Future")
self._exception = exception
self._state = _FINISHED
self.__schedule_callbacks()
self.__log_traceback = True | Mark the future done and set an exception.
If the future is already done when this method is called, raises
InvalidStateError. | set_exception | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | MIT |
def _set_result_unless_cancelled(fut, result):
"""Helper setting the result only if the future was not cancelled."""
if fut.cancelled():
return
fut.set_result(result) | Helper setting the result only if the future was not cancelled. | _set_result_unless_cancelled | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | MIT |
def _set_concurrent_future_state(concurrent, source):
"""Copy state from a future to a concurrent.futures.Future."""
assert source.done()
if source.cancelled():
concurrent.cancel()
if not concurrent.set_running_or_notify_cancel():
return
exception = source.exception()
if exception is not None:
concurrent.set_exception(exception)
else:
result = source.result()
concurrent.set_result(result) | Copy state from a future to a concurrent.futures.Future. | _set_concurrent_future_state | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | MIT |
def _copy_future_state(source, dest):
"""Internal helper to copy state from another Future.
The other Future may be a concurrent.futures.Future.
"""
assert source.done()
if dest.cancelled():
return
assert not dest.done()
if source.cancelled():
dest.cancel()
else:
exception = source.exception()
if exception is not None:
dest.set_exception(exception)
else:
result = source.result()
dest.set_result(result) | Internal helper to copy state from another Future.
The other Future may be a concurrent.futures.Future. | _copy_future_state | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | MIT |
def _chain_future(source, destination):
"""Chain two futures so that when one completes, so does the other.
The result (or exception) of source will be copied to destination.
If destination is cancelled, source gets cancelled too.
Compatible with both asyncio.Future and concurrent.futures.Future.
"""
if not isfuture(source) and not isinstance(source,
concurrent.futures.Future):
raise TypeError('A future is required for source argument')
if not isfuture(destination) and not isinstance(destination,
concurrent.futures.Future):
raise TypeError('A future is required for destination argument')
source_loop = _get_loop(source) if isfuture(source) else None
dest_loop = _get_loop(destination) if isfuture(destination) else None
def _set_state(future, other):
if isfuture(future):
_copy_future_state(other, future)
else:
_set_concurrent_future_state(future, other)
def _call_check_cancel(destination):
if destination.cancelled():
if source_loop is None or source_loop is dest_loop:
source.cancel()
else:
source_loop.call_soon_threadsafe(source.cancel)
def _call_set_state(source):
if (destination.cancelled() and
dest_loop is not None and dest_loop.is_closed()):
return
if dest_loop is None or dest_loop is source_loop:
_set_state(destination, source)
else:
dest_loop.call_soon_threadsafe(_set_state, destination, source)
destination.add_done_callback(_call_check_cancel)
source.add_done_callback(_call_set_state) | Chain two futures so that when one completes, so does the other.
The result (or exception) of source will be copied to destination.
If destination is cancelled, source gets cancelled too.
Compatible with both asyncio.Future and concurrent.futures.Future. | _chain_future | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | MIT |
def wrap_future(future, *, loop=None):
"""Wrap concurrent.futures.Future object."""
if isfuture(future):
return future
assert isinstance(future, concurrent.futures.Future), \
f'concurrent.futures.Future is expected, got {future!r}'
if loop is None:
loop = events.get_event_loop()
new_future = loop.create_future()
_chain_future(future, new_future)
return new_future | Wrap concurrent.futures.Future object. | wrap_future | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/futures.py | MIT |
async def _wait(self):
"""Wait until the process exit and return the process return code.
This method is a coroutine."""
if self._returncode is not None:
return self._returncode
waiter = self._loop.create_future()
self._exit_waiters.append(waiter)
return await waiter | Wait until the process exit and return the process return code.
This method is a coroutine. | _wait | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_subprocess.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/base_subprocess.py | MIT |
def run(main, *, debug=False):
"""Execute the coroutine and return the result.
This function runs the passed coroutine, taking care of
managing the asyncio event loop and finalizing asynchronous
generators.
This function cannot be called when another asyncio event loop is
running in the same thread.
If debug is True, the event loop will be run in debug mode.
This function always creates a new event loop and closes it at the end.
It should be used as a main entry point for asyncio programs, and should
ideally only be called once.
Example:
async def main():
await asyncio.sleep(1)
print('hello')
asyncio.run(main())
"""
if events._get_running_loop() is not None:
raise RuntimeError(
"asyncio.run() cannot be called from a running event loop")
if not coroutines.iscoroutine(main):
raise ValueError("a coroutine was expected, got {!r}".format(main))
loop = events.new_event_loop()
try:
events.set_event_loop(loop)
loop.set_debug(debug)
return loop.run_until_complete(main)
finally:
try:
_cancel_all_tasks(loop)
loop.run_until_complete(loop.shutdown_asyncgens())
finally:
events.set_event_loop(None)
loop.close() | Execute the coroutine and return the result.
This function runs the passed coroutine, taking care of
managing the asyncio event loop and finalizing asynchronous
generators.
This function cannot be called when another asyncio event loop is
running in the same thread.
If debug is True, the event loop will be run in debug mode.
This function always creates a new event loop and closes it at the end.
It should be used as a main entry point for asyncio programs, and should
ideally only be called once.
Example:
async def main():
await asyncio.sleep(1)
print('hello')
asyncio.run(main()) | run | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/runners.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/runners.py | MIT |
def qsize(self):
"""Number of items in the queue."""
return len(self._queue) | Number of items in the queue. | qsize | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | MIT |
def maxsize(self):
"""Number of items allowed in the queue."""
return self._maxsize | Number of items allowed in the queue. | maxsize | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | MIT |
def empty(self):
"""Return True if the queue is empty, False otherwise."""
return not self._queue | Return True if the queue is empty, False otherwise. | empty | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | MIT |
def full(self):
"""Return True if there are maxsize items in the queue.
Note: if the Queue was initialized with maxsize=0 (the default),
then full() is never True.
"""
if self._maxsize <= 0:
return False
else:
return self.qsize() >= self._maxsize | Return True if there are maxsize items in the queue.
Note: if the Queue was initialized with maxsize=0 (the default),
then full() is never True. | full | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | MIT |
async def put(self, item):
"""Put an item into the queue.
Put an item into the queue. If the queue is full, wait until a free
slot is available before adding item.
"""
while self.full():
putter = self._loop.create_future()
self._putters.append(putter)
try:
await putter
except:
putter.cancel() # Just in case putter is not done yet.
try:
# Clean self._putters from canceled putters.
self._putters.remove(putter)
except ValueError:
# The putter could be removed from self._putters by a
# previous get_nowait call.
pass
if not self.full() and not putter.cancelled():
# We were woken up by get_nowait(), but can't take
# the call. Wake up the next in line.
self._wakeup_next(self._putters)
raise
return self.put_nowait(item) | Put an item into the queue.
Put an item into the queue. If the queue is full, wait until a free
slot is available before adding item. | put | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | MIT |
def put_nowait(self, item):
"""Put an item into the queue without blocking.
If no free slot is immediately available, raise QueueFull.
"""
if self.full():
raise QueueFull
self._put(item)
self._unfinished_tasks += 1
self._finished.clear()
self._wakeup_next(self._getters) | Put an item into the queue without blocking.
If no free slot is immediately available, raise QueueFull. | put_nowait | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | MIT |
async def get(self):
"""Remove and return an item from the queue.
If queue is empty, wait until an item is available.
"""
while self.empty():
getter = self._loop.create_future()
self._getters.append(getter)
try:
await getter
except:
getter.cancel() # Just in case getter is not done yet.
try:
# Clean self._getters from canceled getters.
self._getters.remove(getter)
except ValueError:
# The getter could be removed from self._getters by a
# previous put_nowait call.
pass
if not self.empty() and not getter.cancelled():
# We were woken up by put_nowait(), but can't take
# the call. Wake up the next in line.
self._wakeup_next(self._getters)
raise
return self.get_nowait() | Remove and return an item from the queue.
If queue is empty, wait until an item is available. | get | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | MIT |
def get_nowait(self):
"""Remove and return an item from the queue.
Return an item if one is immediately available, else raise QueueEmpty.
"""
if self.empty():
raise QueueEmpty
item = self._get()
self._wakeup_next(self._putters)
return item | Remove and return an item from the queue.
Return an item if one is immediately available, else raise QueueEmpty. | get_nowait | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | MIT |
def task_done(self):
"""Indicate that a formerly enqueued task is complete.
Used by queue consumers. For each get() used to fetch a task,
a subsequent call to task_done() tells the queue that the processing
on the task is complete.
If a join() is currently blocking, it will resume when all items have
been processed (meaning that a task_done() call was received for every
item that had been put() into the queue).
Raises ValueError if called more times than there were items placed in
the queue.
"""
if self._unfinished_tasks <= 0:
raise ValueError('task_done() called too many times')
self._unfinished_tasks -= 1
if self._unfinished_tasks == 0:
self._finished.set() | Indicate that a formerly enqueued task is complete.
Used by queue consumers. For each get() used to fetch a task,
a subsequent call to task_done() tells the queue that the processing
on the task is complete.
If a join() is currently blocking, it will resume when all items have
been processed (meaning that a task_done() call was received for every
item that had been put() into the queue).
Raises ValueError if called more times than there were items placed in
the queue. | task_done | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | MIT |
async def join(self):
"""Block until all items in the queue have been gotten and processed.
The count of unfinished tasks goes up whenever an item is added to the
queue. The count goes down whenever a consumer calls task_done() to
indicate that the item was retrieved and all work on it is complete.
When the count of unfinished tasks drops to zero, join() unblocks.
"""
if self._unfinished_tasks > 0:
await self._finished.wait() | Block until all items in the queue have been gotten and processed.
The count of unfinished tasks goes up whenever an item is added to the
queue. The count goes down whenever a consumer calls task_done() to
indicate that the item was retrieved and all work on it is complete.
When the count of unfinished tasks drops to zero, join() unblocks. | join | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/queues.py | MIT |
async def open_connection(host=None, port=None, *,
loop=None, limit=_DEFAULT_LIMIT, **kwds):
"""A wrapper for create_connection() returning a (reader, writer) pair.
The reader returned is a StreamReader instance; the writer is a
StreamWriter instance.
The arguments are all the usual arguments to create_connection()
except protocol_factory; most common are positional host and port,
with various optional keyword arguments following.
Additional optional keyword arguments are loop (to set the event loop
instance to use) and limit (to set the buffer limit passed to the
StreamReader).
(If you want to customize the StreamReader and/or
StreamReaderProtocol classes, just copy the code -- there's
really nothing special here except some convenience.)
"""
if loop is None:
loop = events.get_event_loop()
reader = StreamReader(limit=limit, loop=loop)
protocol = StreamReaderProtocol(reader, loop=loop)
transport, _ = await loop.create_connection(
lambda: protocol, host, port, **kwds)
writer = StreamWriter(transport, protocol, reader, loop)
return reader, writer | A wrapper for create_connection() returning a (reader, writer) pair.
The reader returned is a StreamReader instance; the writer is a
StreamWriter instance.
The arguments are all the usual arguments to create_connection()
except protocol_factory; most common are positional host and port,
with various optional keyword arguments following.
Additional optional keyword arguments are loop (to set the event loop
instance to use) and limit (to set the buffer limit passed to the
StreamReader).
(If you want to customize the StreamReader and/or
StreamReaderProtocol classes, just copy the code -- there's
really nothing special here except some convenience.) | open_connection | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | MIT |
async def start_server(client_connected_cb, host=None, port=None, *,
loop=None, limit=_DEFAULT_LIMIT, **kwds):
"""Start a socket server, call back for each client connected.
The first parameter, `client_connected_cb`, takes two parameters:
client_reader, client_writer. client_reader is a StreamReader
object, while client_writer is a StreamWriter object. This
parameter can either be a plain callback function or a coroutine;
if it is a coroutine, it will be automatically converted into a
Task.
The rest of the arguments are all the usual arguments to
loop.create_server() except protocol_factory; most common are
positional host and port, with various optional keyword arguments
following. The return value is the same as loop.create_server().
Additional optional keyword arguments are loop (to set the event loop
instance to use) and limit (to set the buffer limit passed to the
StreamReader).
The return value is the same as loop.create_server(), i.e. a
Server object which can be used to stop the service.
"""
if loop is None:
loop = events.get_event_loop()
def factory():
reader = StreamReader(limit=limit, loop=loop)
protocol = StreamReaderProtocol(reader, client_connected_cb,
loop=loop)
return protocol
return await loop.create_server(factory, host, port, **kwds) | Start a socket server, call back for each client connected.
The first parameter, `client_connected_cb`, takes two parameters:
client_reader, client_writer. client_reader is a StreamReader
object, while client_writer is a StreamWriter object. This
parameter can either be a plain callback function or a coroutine;
if it is a coroutine, it will be automatically converted into a
Task.
The rest of the arguments are all the usual arguments to
loop.create_server() except protocol_factory; most common are
positional host and port, with various optional keyword arguments
following. The return value is the same as loop.create_server().
Additional optional keyword arguments are loop (to set the event loop
instance to use) and limit (to set the buffer limit passed to the
StreamReader).
The return value is the same as loop.create_server(), i.e. a
Server object which can be used to stop the service. | start_server | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | MIT |
async def open_unix_connection(path=None, *,
loop=None, limit=_DEFAULT_LIMIT, **kwds):
"""Similar to `open_connection` but works with UNIX Domain Sockets."""
if loop is None:
loop = events.get_event_loop()
reader = StreamReader(limit=limit, loop=loop)
protocol = StreamReaderProtocol(reader, loop=loop)
transport, _ = await loop.create_unix_connection(
lambda: protocol, path, **kwds)
writer = StreamWriter(transport, protocol, reader, loop)
return reader, writer | Similar to `open_connection` but works with UNIX Domain Sockets. | open_unix_connection | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | MIT |
async def start_unix_server(client_connected_cb, path=None, *,
loop=None, limit=_DEFAULT_LIMIT, **kwds):
"""Similar to `start_server` but works with UNIX Domain Sockets."""
if loop is None:
loop = events.get_event_loop()
def factory():
reader = StreamReader(limit=limit, loop=loop)
protocol = StreamReaderProtocol(reader, client_connected_cb,
loop=loop)
return protocol
return await loop.create_unix_server(factory, path, **kwds) | Similar to `start_server` but works with UNIX Domain Sockets. | start_unix_server | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | MIT |
async def drain(self):
"""Flush the write buffer.
The intended use is to write
w.write(data)
await w.drain()
"""
if self._reader is not None:
exc = self._reader.exception()
if exc is not None:
raise exc
if self._transport.is_closing():
# Yield to the event loop so connection_lost() may be
# called. Without this, _drain_helper() would return
# immediately, and code that calls
# write(...); await drain()
# in a loop would never call connection_lost(), so it
# would not see an error when the socket is closed.
await sleep(0, loop=self._loop)
await self._protocol._drain_helper() | Flush the write buffer.
The intended use is to write
w.write(data)
await w.drain() | drain | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | MIT |
def _wakeup_waiter(self):
"""Wakeup read*() functions waiting for data or EOF."""
waiter = self._waiter
if waiter is not None:
self._waiter = None
if not waiter.cancelled():
waiter.set_result(None) | Wakeup read*() functions waiting for data or EOF. | _wakeup_waiter | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | MIT |
def at_eof(self):
"""Return True if the buffer is empty and 'feed_eof' was called."""
return self._eof and not self._buffer | Return True if the buffer is empty and 'feed_eof' was called. | at_eof | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | MIT |
async def _wait_for_data(self, func_name):
"""Wait until feed_data() or feed_eof() is called.
If stream was paused, automatically resume it.
"""
# StreamReader uses a future to link the protocol feed_data() method
# to a read coroutine. Running two read coroutines at the same time
# would have an unexpected behaviour. It would not possible to know
# which coroutine would get the next data.
if self._waiter is not None:
raise RuntimeError(
f'{func_name}() called while another coroutine is '
f'already waiting for incoming data')
assert not self._eof, '_wait_for_data after EOF'
# Waiting for data while paused will make deadlock, so prevent it.
# This is essential for readexactly(n) for case when n > self._limit.
if self._paused:
self._paused = False
self._transport.resume_reading()
self._waiter = self._loop.create_future()
try:
await self._waiter
finally:
self._waiter = None | Wait until feed_data() or feed_eof() is called.
If stream was paused, automatically resume it. | _wait_for_data | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | MIT |
async def readline(self):
"""Read chunk of data from the stream until newline (b'\n') is found.
On success, return chunk that ends with newline. If only partial
line can be read due to EOF, return incomplete line without
terminating newline. When EOF was reached while no bytes read, empty
bytes object is returned.
If limit is reached, ValueError will be raised. In that case, if
newline was found, complete line including newline will be removed
from internal buffer. Else, internal buffer will be cleared. Limit is
compared against part of the line without newline.
If stream was paused, this function will automatically resume it if
needed.
"""
sep = b'\n'
seplen = len(sep)
try:
line = await self.readuntil(sep)
except IncompleteReadError as e:
return e.partial
except LimitOverrunError as e:
if self._buffer.startswith(sep, e.consumed):
del self._buffer[:e.consumed + seplen]
else:
self._buffer.clear()
self._maybe_resume_transport()
raise ValueError(e.args[0])
return line | Read chunk of data from the stream until newline (b'\n') is found.
On success, return chunk that ends with newline. If only partial
line can be read due to EOF, return incomplete line without
terminating newline. When EOF was reached while no bytes read, empty
bytes object is returned.
If limit is reached, ValueError will be raised. In that case, if
newline was found, complete line including newline will be removed
from internal buffer. Else, internal buffer will be cleared. Limit is
compared against part of the line without newline.
If stream was paused, this function will automatically resume it if
needed. | readline | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | MIT |
async def readuntil(self, separator=b'\n'):
"""Read data from the stream until ``separator`` is found.
On success, the data and separator will be removed from the
internal buffer (consumed). Returned data will include the
separator at the end.
Configured stream limit is used to check result. Limit sets the
maximal length of data that can be returned, not counting the
separator.
If an EOF occurs and the complete separator is still not found,
an IncompleteReadError exception will be raised, and the internal
buffer will be reset. The IncompleteReadError.partial attribute
may contain the separator partially.
If the data cannot be read because of over limit, a
LimitOverrunError exception will be raised, and the data
will be left in the internal buffer, so it can be read again.
"""
seplen = len(separator)
if seplen == 0:
raise ValueError('Separator should be at least one-byte string')
if self._exception is not None:
raise self._exception
# Consume whole buffer except last bytes, which length is
# one less than seplen. Let's check corner cases with
# separator='SEPARATOR':
# * we have received almost complete separator (without last
# byte). i.e buffer='some textSEPARATO'. In this case we
# can safely consume len(separator) - 1 bytes.
# * last byte of buffer is first byte of separator, i.e.
# buffer='abcdefghijklmnopqrS'. We may safely consume
# everything except that last byte, but this require to
# analyze bytes of buffer that match partial separator.
# This is slow and/or require FSM. For this case our
# implementation is not optimal, since require rescanning
# of data that is known to not belong to separator. In
# real world, separator will not be so long to notice
# performance problems. Even when reading MIME-encoded
# messages :)
# `offset` is the number of bytes from the beginning of the buffer
# where there is no occurrence of `separator`.
offset = 0
# Loop until we find `separator` in the buffer, exceed the buffer size,
# or an EOF has happened.
while True:
buflen = len(self._buffer)
# Check if we now have enough data in the buffer for `separator` to
# fit.
if buflen - offset >= seplen:
isep = self._buffer.find(separator, offset)
if isep != -1:
# `separator` is in the buffer. `isep` will be used later
# to retrieve the data.
break
# see upper comment for explanation.
offset = buflen + 1 - seplen
if offset > self._limit:
raise LimitOverrunError(
'Separator is not found, and chunk exceed the limit',
offset)
# Complete message (with full separator) may be present in buffer
# even when EOF flag is set. This may happen when the last chunk
# adds data which makes separator be found. That's why we check for
# EOF *ater* inspecting the buffer.
if self._eof:
chunk = bytes(self._buffer)
self._buffer.clear()
raise IncompleteReadError(chunk, None)
# _wait_for_data() will resume reading if stream was paused.
await self._wait_for_data('readuntil')
if isep > self._limit:
raise LimitOverrunError(
'Separator is found, but chunk is longer than limit', isep)
chunk = self._buffer[:isep + seplen]
del self._buffer[:isep + seplen]
self._maybe_resume_transport()
return bytes(chunk) | Read data from the stream until ``separator`` is found.
On success, the data and separator will be removed from the
internal buffer (consumed). Returned data will include the
separator at the end.
Configured stream limit is used to check result. Limit sets the
maximal length of data that can be returned, not counting the
separator.
If an EOF occurs and the complete separator is still not found,
an IncompleteReadError exception will be raised, and the internal
buffer will be reset. The IncompleteReadError.partial attribute
may contain the separator partially.
If the data cannot be read because of over limit, a
LimitOverrunError exception will be raised, and the data
will be left in the internal buffer, so it can be read again. | readuntil | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | MIT |
async def read(self, n=-1):
"""Read up to `n` bytes from the stream.
If n is not provided, or set to -1, read until EOF and return all read
bytes. If the EOF was received and the internal buffer is empty, return
an empty bytes object.
If n is zero, return empty bytes object immediately.
If n is positive, this function try to read `n` bytes, and may return
less or equal bytes than requested, but at least one byte. If EOF was
received before any byte is read, this function returns empty byte
object.
Returned value is not limited with limit, configured at stream
creation.
If stream was paused, this function will automatically resume it if
needed.
"""
if self._exception is not None:
raise self._exception
if n == 0:
return b''
if n < 0:
# This used to just loop creating a new waiter hoping to
# collect everything in self._buffer, but that would
# deadlock if the subprocess sends more than self.limit
# bytes. So just call self.read(self._limit) until EOF.
blocks = []
while True:
block = await self.read(self._limit)
if not block:
break
blocks.append(block)
return b''.join(blocks)
if not self._buffer and not self._eof:
await self._wait_for_data('read')
# This will work right even if buffer is less than n bytes
data = bytes(self._buffer[:n])
del self._buffer[:n]
self._maybe_resume_transport()
return data | Read up to `n` bytes from the stream.
If n is not provided, or set to -1, read until EOF and return all read
bytes. If the EOF was received and the internal buffer is empty, return
an empty bytes object.
If n is zero, return empty bytes object immediately.
If n is positive, this function try to read `n` bytes, and may return
less or equal bytes than requested, but at least one byte. If EOF was
received before any byte is read, this function returns empty byte
object.
Returned value is not limited with limit, configured at stream
creation.
If stream was paused, this function will automatically resume it if
needed. | read | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | MIT |
async def readexactly(self, n):
"""Read exactly `n` bytes.
Raise an IncompleteReadError if EOF is reached before `n` bytes can be
read. The IncompleteReadError.partial attribute of the exception will
contain the partial read bytes.
if n is zero, return empty bytes object.
Returned value is not limited with limit, configured at stream
creation.
If stream was paused, this function will automatically resume it if
needed.
"""
if n < 0:
raise ValueError('readexactly size can not be less than zero')
if self._exception is not None:
raise self._exception
if n == 0:
return b''
while len(self._buffer) < n:
if self._eof:
incomplete = bytes(self._buffer)
self._buffer.clear()
raise IncompleteReadError(incomplete, n)
await self._wait_for_data('readexactly')
if len(self._buffer) == n:
data = bytes(self._buffer)
self._buffer.clear()
else:
data = bytes(self._buffer[:n])
del self._buffer[:n]
self._maybe_resume_transport()
return data | Read exactly `n` bytes.
Raise an IncompleteReadError if EOF is reached before `n` bytes can be
read. The IncompleteReadError.partial attribute of the exception will
contain the partial read bytes.
if n is zero, return empty bytes object.
Returned value is not limited with limit, configured at stream
creation.
If stream was paused, this function will automatically resume it if
needed. | readexactly | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/streams.py | MIT |
def current_task(loop=None):
"""Return a currently executed task."""
if loop is None:
loop = events.get_running_loop()
return _current_tasks.get(loop) | Return a currently executed task. | current_task | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
def all_tasks(loop=None):
"""Return a set of all tasks for the loop."""
if loop is None:
loop = events.get_running_loop()
# Looping over a WeakSet (_all_tasks) isn't safe as it can be updated from another
# thread while we do so. Therefore we cast it to list prior to filtering. The list
# cast itself requires iteration, so we repeat it several times ignoring
# RuntimeErrors (which are not very likely to occur). See issues 34970 and 36607 for
# details.
i = 0
while True:
try:
tasks = list(_all_tasks)
except RuntimeError:
i += 1
if i >= 1000:
raise
else:
break
return {t for t in tasks
if futures._get_loop(t) is loop and not t.done()} | Return a set of all tasks for the loop. | all_tasks | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
def current_task(cls, loop=None):
"""Return the currently running task in an event loop or None.
By default the current task for the current event loop is returned.
None is returned when called not in the context of a Task.
"""
warnings.warn("Task.current_task() is deprecated, "
"use asyncio.current_task() instead",
PendingDeprecationWarning,
stacklevel=2)
if loop is None:
loop = events.get_event_loop()
return current_task(loop) | Return the currently running task in an event loop or None.
By default the current task for the current event loop is returned.
None is returned when called not in the context of a Task. | current_task | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
def all_tasks(cls, loop=None):
"""Return a set of all tasks for an event loop.
By default all tasks for the current event loop are returned.
"""
warnings.warn("Task.all_tasks() is deprecated, "
"use asyncio.all_tasks() instead",
PendingDeprecationWarning,
stacklevel=2)
return _all_tasks_compat(loop) | Return a set of all tasks for an event loop.
By default all tasks for the current event loop are returned. | all_tasks | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
def get_stack(self, *, limit=None):
"""Return the list of stack frames for this task's coroutine.
If the coroutine is not done, this returns the stack where it is
suspended. If the coroutine has completed successfully or was
cancelled, this returns an empty list. If the coroutine was
terminated by an exception, this returns the list of traceback
frames.
The frames are always ordered from oldest to newest.
The optional limit gives the maximum number of frames to
return; by default all available frames are returned. Its
meaning differs depending on whether a stack or a traceback is
returned: the newest frames of a stack are returned, but the
oldest frames of a traceback are returned. (This matches the
behavior of the traceback module.)
For reasons beyond our control, only one stack frame is
returned for a suspended coroutine.
"""
return base_tasks._task_get_stack(self, limit) | Return the list of stack frames for this task's coroutine.
If the coroutine is not done, this returns the stack where it is
suspended. If the coroutine has completed successfully or was
cancelled, this returns an empty list. If the coroutine was
terminated by an exception, this returns the list of traceback
frames.
The frames are always ordered from oldest to newest.
The optional limit gives the maximum number of frames to
return; by default all available frames are returned. Its
meaning differs depending on whether a stack or a traceback is
returned: the newest frames of a stack are returned, but the
oldest frames of a traceback are returned. (This matches the
behavior of the traceback module.)
For reasons beyond our control, only one stack frame is
returned for a suspended coroutine. | get_stack | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
def print_stack(self, *, limit=None, file=None):
"""Print the stack or traceback for this task's coroutine.
This produces output similar to that of the traceback module,
for the frames retrieved by get_stack(). The limit argument
is passed to get_stack(). The file argument is an I/O stream
to which the output is written; by default output is written
to sys.stderr.
"""
return base_tasks._task_print_stack(self, limit, file) | Print the stack or traceback for this task's coroutine.
This produces output similar to that of the traceback module,
for the frames retrieved by get_stack(). The limit argument
is passed to get_stack(). The file argument is an I/O stream
to which the output is written; by default output is written
to sys.stderr. | print_stack | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
def cancel(self):
"""Request that this task cancel itself.
This arranges for a CancelledError to be thrown into the
wrapped coroutine on the next cycle through the event loop.
The coroutine then has a chance to clean up or even deny
the request using try/except/finally.
Unlike Future.cancel, this does not guarantee that the
task will be cancelled: the exception might be caught and
acted upon, delaying cancellation of the task or preventing
cancellation completely. The task may also return a value or
raise a different exception.
Immediately after this method is called, Task.cancelled() will
not return True (unless the task was already cancelled). A
task will be marked as cancelled when the wrapped coroutine
terminates with a CancelledError exception (even if cancel()
was not called).
"""
self._log_traceback = False
if self.done():
return False
if self._fut_waiter is not None:
if self._fut_waiter.cancel():
# Leave self._fut_waiter; it may be a Task that
# catches and ignores the cancellation so we may have
# to cancel it again later.
return True
# It must be the case that self.__step is already scheduled.
self._must_cancel = True
return True | Request that this task cancel itself.
This arranges for a CancelledError to be thrown into the
wrapped coroutine on the next cycle through the event loop.
The coroutine then has a chance to clean up or even deny
the request using try/except/finally.
Unlike Future.cancel, this does not guarantee that the
task will be cancelled: the exception might be caught and
acted upon, delaying cancellation of the task or preventing
cancellation completely. The task may also return a value or
raise a different exception.
Immediately after this method is called, Task.cancelled() will
not return True (unless the task was already cancelled). A
task will be marked as cancelled when the wrapped coroutine
terminates with a CancelledError exception (even if cancel()
was not called). | cancel | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
def create_task(coro):
"""Schedule the execution of a coroutine object in a spawn task.
Return a Task object.
"""
loop = events.get_running_loop()
return loop.create_task(coro) | Schedule the execution of a coroutine object in a spawn task.
Return a Task object. | create_task | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
async def wait(fs, *, loop=None, timeout=None, return_when=ALL_COMPLETED):
"""Wait for the Futures and coroutines given by fs to complete.
The sequence futures must not be empty.
Coroutines will be wrapped in Tasks.
Returns two sets of Future: (done, pending).
Usage:
done, pending = await asyncio.wait(fs)
Note: This does not raise TimeoutError! Futures that aren't done
when the timeout occurs are returned in the second set.
"""
if futures.isfuture(fs) or coroutines.iscoroutine(fs):
raise TypeError(f"expect a list of futures, not {type(fs).__name__}")
if not fs:
raise ValueError('Set of coroutines/Futures is empty.')
if return_when not in (FIRST_COMPLETED, FIRST_EXCEPTION, ALL_COMPLETED):
raise ValueError(f'Invalid return_when value: {return_when}')
if loop is None:
loop = events.get_event_loop()
fs = {ensure_future(f, loop=loop) for f in set(fs)}
return await _wait(fs, timeout, return_when, loop) | Wait for the Futures and coroutines given by fs to complete.
The sequence futures must not be empty.
Coroutines will be wrapped in Tasks.
Returns two sets of Future: (done, pending).
Usage:
done, pending = await asyncio.wait(fs)
Note: This does not raise TimeoutError! Futures that aren't done
when the timeout occurs are returned in the second set. | wait | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
async def wait_for(fut, timeout, *, loop=None):
"""Wait for the single Future or coroutine to complete, with timeout.
Coroutine will be wrapped in Task.
Returns result of the Future or coroutine. When a timeout occurs,
it cancels the task and raises TimeoutError. To avoid the task
cancellation, wrap it in shield().
If the wait is cancelled, the task is also cancelled.
This function is a coroutine.
"""
if loop is None:
loop = events.get_event_loop()
if timeout is None:
return await fut
if timeout <= 0:
fut = ensure_future(fut, loop=loop)
if fut.done():
return fut.result()
fut.cancel()
raise futures.TimeoutError()
waiter = loop.create_future()
timeout_handle = loop.call_later(timeout, _release_waiter, waiter)
cb = functools.partial(_release_waiter, waiter)
fut = ensure_future(fut, loop=loop)
fut.add_done_callback(cb)
try:
# wait until the future completes or the timeout
try:
await waiter
except futures.CancelledError:
fut.remove_done_callback(cb)
fut.cancel()
raise
if fut.done():
return fut.result()
else:
fut.remove_done_callback(cb)
# We must ensure that the task is not running
# after wait_for() returns.
# See https://bugs.python.org/issue32751
await _cancel_and_wait(fut, loop=loop)
raise futures.TimeoutError()
finally:
timeout_handle.cancel() | Wait for the single Future or coroutine to complete, with timeout.
Coroutine will be wrapped in Task.
Returns result of the Future or coroutine. When a timeout occurs,
it cancels the task and raises TimeoutError. To avoid the task
cancellation, wrap it in shield().
If the wait is cancelled, the task is also cancelled.
This function is a coroutine. | wait_for | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
async def _wait(fs, timeout, return_when, loop):
"""Internal helper for wait().
The fs argument must be a collection of Futures.
"""
assert fs, 'Set of Futures is empty.'
waiter = loop.create_future()
timeout_handle = None
if timeout is not None:
timeout_handle = loop.call_later(timeout, _release_waiter, waiter)
counter = len(fs)
def _on_completion(f):
nonlocal counter
counter -= 1
if (counter <= 0 or
return_when == FIRST_COMPLETED or
return_when == FIRST_EXCEPTION and (not f.cancelled() and
f.exception() is not None)):
if timeout_handle is not None:
timeout_handle.cancel()
if not waiter.done():
waiter.set_result(None)
for f in fs:
f.add_done_callback(_on_completion)
try:
await waiter
finally:
if timeout_handle is not None:
timeout_handle.cancel()
for f in fs:
f.remove_done_callback(_on_completion)
done, pending = set(), set()
for f in fs:
if f.done():
done.add(f)
else:
pending.add(f)
return done, pending | Internal helper for wait().
The fs argument must be a collection of Futures. | _wait | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
async def _cancel_and_wait(fut, loop):
"""Cancel the *fut* future or task and wait until it completes."""
waiter = loop.create_future()
cb = functools.partial(_release_waiter, waiter)
fut.add_done_callback(cb)
try:
fut.cancel()
# We cannot wait on *fut* directly to make
# sure _cancel_and_wait itself is reliably cancellable.
await waiter
finally:
fut.remove_done_callback(cb) | Cancel the *fut* future or task and wait until it completes. | _cancel_and_wait | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
def as_completed(fs, *, loop=None, timeout=None):
"""Return an iterator whose values are coroutines.
When waiting for the yielded coroutines you'll get the results (or
exceptions!) of the original Futures (or coroutines), in the order
in which and as soon as they complete.
This differs from PEP 3148; the proper way to use this is:
for f in as_completed(fs):
result = await f # The 'await' may raise.
# Use result.
If a timeout is specified, the 'await' will raise
TimeoutError when the timeout occurs before all Futures are done.
Note: The futures 'f' are not necessarily members of fs.
"""
if futures.isfuture(fs) or coroutines.iscoroutine(fs):
raise TypeError(f"expect a list of futures, not {type(fs).__name__}")
loop = loop if loop is not None else events.get_event_loop()
todo = {ensure_future(f, loop=loop) for f in set(fs)}
from .queues import Queue # Import here to avoid circular import problem.
done = Queue(loop=loop)
timeout_handle = None
def _on_timeout():
for f in todo:
f.remove_done_callback(_on_completion)
done.put_nowait(None) # Queue a dummy value for _wait_for_one().
todo.clear() # Can't do todo.remove(f) in the loop.
def _on_completion(f):
if not todo:
return # _on_timeout() was here first.
todo.remove(f)
done.put_nowait(f)
if not todo and timeout_handle is not None:
timeout_handle.cancel()
async def _wait_for_one():
f = await done.get()
if f is None:
# Dummy value from _on_timeout().
raise futures.TimeoutError
return f.result() # May raise f.exception().
for f in todo:
f.add_done_callback(_on_completion)
if todo and timeout is not None:
timeout_handle = loop.call_later(timeout, _on_timeout)
for _ in range(len(todo)):
yield _wait_for_one() | Return an iterator whose values are coroutines.
When waiting for the yielded coroutines you'll get the results (or
exceptions!) of the original Futures (or coroutines), in the order
in which and as soon as they complete.
This differs from PEP 3148; the proper way to use this is:
for f in as_completed(fs):
result = await f # The 'await' may raise.
# Use result.
If a timeout is specified, the 'await' will raise
TimeoutError when the timeout occurs before all Futures are done.
Note: The futures 'f' are not necessarily members of fs. | as_completed | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
def __sleep0():
"""Skip one event loop run cycle.
This is a private helper for 'asyncio.sleep()', used
when the 'delay' is set to 0. It uses a bare 'yield'
expression (which Task.__step knows how to handle)
instead of creating a Future object.
"""
yield | Skip one event loop run cycle.
This is a private helper for 'asyncio.sleep()', used
when the 'delay' is set to 0. It uses a bare 'yield'
expression (which Task.__step knows how to handle)
instead of creating a Future object. | __sleep0 | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
async def sleep(delay, result=None, *, loop=None):
"""Coroutine that completes after a given time (in seconds)."""
if delay <= 0:
await __sleep0()
return result
if loop is None:
loop = events.get_event_loop()
future = loop.create_future()
h = loop.call_later(delay,
futures._set_result_unless_cancelled,
future, result)
try:
return await future
finally:
h.cancel() | Coroutine that completes after a given time (in seconds). | sleep | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
def ensure_future(coro_or_future, *, loop=None):
"""Wrap a coroutine or an awaitable in a future.
If the argument is a Future, it is returned directly.
"""
if coroutines.iscoroutine(coro_or_future):
if loop is None:
loop = events.get_event_loop()
task = loop.create_task(coro_or_future)
if task._source_traceback:
del task._source_traceback[-1]
return task
elif futures.isfuture(coro_or_future):
if loop is not None and loop is not futures._get_loop(coro_or_future):
raise ValueError('loop argument must agree with Future')
return coro_or_future
elif inspect.isawaitable(coro_or_future):
return ensure_future(_wrap_awaitable(coro_or_future), loop=loop)
else:
raise TypeError('An asyncio.Future, a coroutine or an awaitable is '
'required') | Wrap a coroutine or an awaitable in a future.
If the argument is a Future, it is returned directly. | ensure_future | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
def _wrap_awaitable(awaitable):
"""Helper for asyncio.ensure_future().
Wraps awaitable (an object with __await__) into a coroutine
that will later be wrapped in a Task by ensure_future().
"""
return (yield from awaitable.__await__()) | Helper for asyncio.ensure_future().
Wraps awaitable (an object with __await__) into a coroutine
that will later be wrapped in a Task by ensure_future(). | _wrap_awaitable | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
def gather(*coros_or_futures, loop=None, return_exceptions=False):
"""Return a future aggregating results from the given coroutines/futures.
Coroutines will be wrapped in a future and scheduled in the event
loop. They will not necessarily be scheduled in the same order as
passed in.
All futures must share the same event loop. If all the tasks are
done successfully, the returned future's result is the list of
results (in the order of the original sequence, not necessarily
the order of results arrival). If *return_exceptions* is True,
exceptions in the tasks are treated the same as successful
results, and gathered in the result list; otherwise, the first
raised exception will be immediately propagated to the returned
future.
Cancellation: if the outer Future is cancelled, all children (that
have not completed yet) are also cancelled. If any child is
cancelled, this is treated as if it raised CancelledError --
the outer Future is *not* cancelled in this case. (This is to
prevent the cancellation of one child to cause other children to
be cancelled.)
"""
if not coros_or_futures:
if loop is None:
loop = events.get_event_loop()
outer = loop.create_future()
outer.set_result([])
return outer
def _done_callback(fut):
nonlocal nfinished
nfinished += 1
if outer.done():
if not fut.cancelled():
# Mark exception retrieved.
fut.exception()
return
if not return_exceptions:
if fut.cancelled():
# Check if 'fut' is cancelled first, as
# 'fut.exception()' will *raise* a CancelledError
# instead of returning it.
exc = futures.CancelledError()
outer.set_exception(exc)
return
else:
exc = fut.exception()
if exc is not None:
outer.set_exception(exc)
return
if nfinished == nfuts:
# All futures are done; create a list of results
# and set it to the 'outer' future.
results = []
for fut in children:
if fut.cancelled():
# Check if 'fut' is cancelled first, as
# 'fut.exception()' will *raise* a CancelledError
# instead of returning it.
res = futures.CancelledError()
else:
res = fut.exception()
if res is None:
res = fut.result()
results.append(res)
if outer._cancel_requested:
# If gather is being cancelled we must propagate the
# cancellation regardless of *return_exceptions* argument.
# See issue 32684.
outer.set_exception(futures.CancelledError())
else:
outer.set_result(results)
arg_to_fut = {}
children = []
nfuts = 0
nfinished = 0
for arg in coros_or_futures:
if arg not in arg_to_fut:
fut = ensure_future(arg, loop=loop)
if loop is None:
loop = futures._get_loop(fut)
if fut is not arg:
# 'arg' was not a Future, therefore, 'fut' is a new
# Future created specifically for 'arg'. Since the caller
# can't control it, disable the "destroy pending task"
# warning.
fut._log_destroy_pending = False
nfuts += 1
arg_to_fut[arg] = fut
fut.add_done_callback(_done_callback)
else:
# There's a duplicate Future object in coros_or_futures.
fut = arg_to_fut[arg]
children.append(fut)
outer = _GatheringFuture(children, loop=loop)
return outer | Return a future aggregating results from the given coroutines/futures.
Coroutines will be wrapped in a future and scheduled in the event
loop. They will not necessarily be scheduled in the same order as
passed in.
All futures must share the same event loop. If all the tasks are
done successfully, the returned future's result is the list of
results (in the order of the original sequence, not necessarily
the order of results arrival). If *return_exceptions* is True,
exceptions in the tasks are treated the same as successful
results, and gathered in the result list; otherwise, the first
raised exception will be immediately propagated to the returned
future.
Cancellation: if the outer Future is cancelled, all children (that
have not completed yet) are also cancelled. If any child is
cancelled, this is treated as if it raised CancelledError --
the outer Future is *not* cancelled in this case. (This is to
prevent the cancellation of one child to cause other children to
be cancelled.) | gather | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
def shield(arg, *, loop=None):
"""Wait for a future, shielding it from cancellation.
The statement
res = await shield(something())
is exactly equivalent to the statement
res = await something()
*except* that if the coroutine containing it is cancelled, the
task running in something() is not cancelled. From the POV of
something(), the cancellation did not happen. But its caller is
still cancelled, so the yield-from expression still raises
CancelledError. Note: If something() is cancelled by other means
this will still cancel shield().
If you want to completely ignore cancellation (not recommended)
you can combine shield() with a try/except clause, as follows:
try:
res = await shield(something())
except CancelledError:
res = None
"""
inner = ensure_future(arg, loop=loop)
if inner.done():
# Shortcut.
return inner
loop = futures._get_loop(inner)
outer = loop.create_future()
def _inner_done_callback(inner):
if outer.cancelled():
if not inner.cancelled():
# Mark inner's result as retrieved.
inner.exception()
return
if inner.cancelled():
outer.cancel()
else:
exc = inner.exception()
if exc is not None:
outer.set_exception(exc)
else:
outer.set_result(inner.result())
def _outer_done_callback(outer):
if not inner.done():
inner.remove_done_callback(_inner_done_callback)
inner.add_done_callback(_inner_done_callback)
outer.add_done_callback(_outer_done_callback)
return outer | Wait for a future, shielding it from cancellation.
The statement
res = await shield(something())
is exactly equivalent to the statement
res = await something()
*except* that if the coroutine containing it is cancelled, the
task running in something() is not cancelled. From the POV of
something(), the cancellation did not happen. But its caller is
still cancelled, so the yield-from expression still raises
CancelledError. Note: If something() is cancelled by other means
this will still cancel shield().
If you want to completely ignore cancellation (not recommended)
you can combine shield() with a try/except clause, as follows:
try:
res = await shield(something())
except CancelledError:
res = None | shield | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
def run_coroutine_threadsafe(coro, loop):
"""Submit a coroutine object to a given event loop.
Return a concurrent.futures.Future to access the result.
"""
if not coroutines.iscoroutine(coro):
raise TypeError('A coroutine object is required')
future = concurrent.futures.Future()
def callback():
try:
futures._chain_future(ensure_future(coro, loop=loop), future)
except Exception as exc:
if future.set_running_or_notify_cancel():
future.set_exception(exc)
raise
loop.call_soon_threadsafe(callback)
return future | Submit a coroutine object to a given event loop.
Return a concurrent.futures.Future to access the result. | run_coroutine_threadsafe | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
def _register_task(task):
"""Register a new task in asyncio as executed by loop."""
_all_tasks.add(task) | Register a new task in asyncio as executed by loop. | _register_task | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
def _unregister_task(task):
"""Unregister a task."""
_all_tasks.discard(task) | Unregister a task. | _unregister_task | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/tasks.py | MIT |
def connection_made(self, transport):
"""Called when a connection is made.
The argument is the transport representing the pipe connection.
To receive data, wait for data_received() calls.
When the connection is closed, connection_lost() is called.
""" | Called when a connection is made.
The argument is the transport representing the pipe connection.
To receive data, wait for data_received() calls.
When the connection is closed, connection_lost() is called. | connection_made | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | MIT |
def connection_lost(self, exc):
"""Called when the connection is lost or closed.
The argument is an exception object or None (the latter
meaning a regular EOF is received or the connection was
aborted or closed).
""" | Called when the connection is lost or closed.
The argument is an exception object or None (the latter
meaning a regular EOF is received or the connection was
aborted or closed). | connection_lost | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | MIT |
def pause_writing(self):
"""Called when the transport's buffer goes over the high-water mark.
Pause and resume calls are paired -- pause_writing() is called
once when the buffer goes strictly over the high-water mark
(even if subsequent writes increases the buffer size even
more), and eventually resume_writing() is called once when the
buffer size reaches the low-water mark.
Note that if the buffer size equals the high-water mark,
pause_writing() is not called -- it must go strictly over.
Conversely, resume_writing() is called when the buffer size is
equal or lower than the low-water mark. These end conditions
are important to ensure that things go as expected when either
mark is zero.
NOTE: This is the only Protocol callback that is not called
through EventLoop.call_soon() -- if it were, it would have no
effect when it's most needed (when the app keeps writing
without yielding until pause_writing() is called).
""" | Called when the transport's buffer goes over the high-water mark.
Pause and resume calls are paired -- pause_writing() is called
once when the buffer goes strictly over the high-water mark
(even if subsequent writes increases the buffer size even
more), and eventually resume_writing() is called once when the
buffer size reaches the low-water mark.
Note that if the buffer size equals the high-water mark,
pause_writing() is not called -- it must go strictly over.
Conversely, resume_writing() is called when the buffer size is
equal or lower than the low-water mark. These end conditions
are important to ensure that things go as expected when either
mark is zero.
NOTE: This is the only Protocol callback that is not called
through EventLoop.call_soon() -- if it were, it would have no
effect when it's most needed (when the app keeps writing
without yielding until pause_writing() is called). | pause_writing | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | MIT |
def resume_writing(self):
"""Called when the transport's buffer drains below the low-water mark.
See pause_writing() for details.
""" | Called when the transport's buffer drains below the low-water mark.
See pause_writing() for details. | resume_writing | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | MIT |
def data_received(self, data):
"""Called when some data is received.
The argument is a bytes object.
""" | Called when some data is received.
The argument is a bytes object. | data_received | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | MIT |
def eof_received(self):
"""Called when the other end calls write_eof() or equivalent.
If this returns a false value (including None), the transport
will close itself. If it returns a true value, closing the
transport is up to the protocol.
""" | Called when the other end calls write_eof() or equivalent.
If this returns a false value (including None), the transport
will close itself. If it returns a true value, closing the
transport is up to the protocol. | eof_received | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | MIT |
def get_buffer(self, sizehint):
"""Called to allocate a new receive buffer.
*sizehint* is a recommended minimal size for the returned
buffer. When set to -1, the buffer size can be arbitrary.
Must return an object that implements the
:ref:`buffer protocol <bufferobjects>`.
It is an error to return a zero-sized buffer.
""" | Called to allocate a new receive buffer.
*sizehint* is a recommended minimal size for the returned
buffer. When set to -1, the buffer size can be arbitrary.
Must return an object that implements the
:ref:`buffer protocol <bufferobjects>`.
It is an error to return a zero-sized buffer. | get_buffer | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | MIT |
def buffer_updated(self, nbytes):
"""Called when the buffer was updated with the received data.
*nbytes* is the total number of bytes that were written to
the buffer.
""" | Called when the buffer was updated with the received data.
*nbytes* is the total number of bytes that were written to
the buffer. | buffer_updated | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | MIT |
def datagram_received(self, data, addr):
"""Called when some datagram is received.""" | Called when some datagram is received. | datagram_received | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | MIT |
def error_received(self, exc):
"""Called when a send or receive operation raises an OSError.
(Other than BlockingIOError or InterruptedError.)
""" | Called when a send or receive operation raises an OSError.
(Other than BlockingIOError or InterruptedError.) | error_received | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | MIT |
def pipe_data_received(self, fd, data):
"""Called when the subprocess writes data into stdout/stderr pipe.
fd is int file descriptor.
data is bytes object.
""" | Called when the subprocess writes data into stdout/stderr pipe.
fd is int file descriptor.
data is bytes object. | pipe_data_received | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | MIT |
def pipe_connection_lost(self, fd, exc):
"""Called when a file descriptor associated with the child process is
closed.
fd is the int file descriptor that was closed.
""" | Called when a file descriptor associated with the child process is
closed.
fd is the int file descriptor that was closed. | pipe_connection_lost | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | MIT |
def process_exited(self):
"""Called when subprocess has exited.""" | Called when subprocess has exited. | process_exited | python | sajjadium/ctf-archives | ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | https://github.com/sajjadium/ctf-archives/blob/master/ctfs/TyphoonCon/2022/pwn/beautifier_player/python3.7/lib/python3.7/asyncio/protocols.py | MIT |
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