mirror of https://github.com/morpheus65535/bazarr
109 lines
3.3 KiB
Python
109 lines
3.3 KiB
Python
|
# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
|
||
|
|
|
||
|
|
"""curio async I/O library query support"""
|
||
|
|
|
||
|
|
import socket
|
||
|
|
import curio
|
||
|
|
import curio.socket # type: ignore
|
||
|
|
|
||
|
|
import dns._asyncbackend
|
||
|
|
import dns.exception
|
||
|
|
import dns.inet
|
||
|
|
|
||
|
|
|
||
|
|
def _maybe_timeout(timeout):
|
||
|
|
if timeout:
|
||
|
|
return curio.ignore_after(timeout)
|
||
|
|
else:
|
||
|
|
return dns._asyncbackend.NullContext()
|
||
|
|
|
||
|
|
|
||
|
|
# for brevity
|
||
|
|
_lltuple = dns.inet.low_level_address_tuple
|
||
|
|
|
||
|
|
# pylint: disable=redefined-outer-name
|
||
|
|
|
||
|
|
|
||
|
|
class DatagramSocket(dns._asyncbackend.DatagramSocket):
|
||
|
|
def __init__(self, socket):
|
||
|
|
self.socket = socket
|
||
|
|
self.family = socket.family
|
||
|
|
|
||
|
|
async def sendto(self, what, destination, timeout):
|
||
|
|
async with _maybe_timeout(timeout):
|
||
|
|
return await self.socket.sendto(what, destination)
|
||
|
|
raise dns.exception.Timeout(timeout=timeout) # pragma: no cover
|
||
|
|
|
||
|
|
async def recvfrom(self, size, timeout):
|
||
|
|
async with _maybe_timeout(timeout):
|
||
|
|
return await self.socket.recvfrom(size)
|
||
|
|
raise dns.exception.Timeout(timeout=timeout)
|
||
|
|
|
||
|
|
async def close(self):
|
||
|
|
await self.socket.close()
|
||
|
|
|
||
|
|
async def getpeername(self):
|
||
|
|
return self.socket.getpeername()
|
||
|
|
|
||
|
|
async def getsockname(self):
|
||
|
|
return self.socket.getsockname()
|
||
|
|
|
||
|
|
|
||
|
|
class StreamSocket(dns._asyncbackend.StreamSocket):
|
||
|
|
def __init__(self, socket):
|
||
|
|
self.socket = socket
|
||
|
|
self.family = socket.family
|
||
|
|
|
||
|
|
async def sendall(self, what, timeout):
|
||
|
|
async with _maybe_timeout(timeout):
|
||
|
|
return await self.socket.sendall(what)
|
||
|
|
raise dns.exception.Timeout(timeout=timeout)
|
||
|
|
|
||
|
|
async def recv(self, size, timeout):
|
||
|
|
async with _maybe_timeout(timeout):
|
||
|
|
return await self.socket.recv(size)
|
||
|
|
raise dns.exception.Timeout(timeout=timeout)
|
||
|
|
|
||
|
|
async def close(self):
|
||
|
|
await self.socket.close()
|
||
|
|
|
||
|
|
async def getpeername(self):
|
||
|
|
return self.socket.getpeername()
|
||
|
|
|
||
|
|
async def getsockname(self):
|
||
|
|
return self.socket.getsockname()
|
||
|
|
|
||
|
|
|
||
|
|
class Backend(dns._asyncbackend.Backend):
|
||
|
|
def name(self):
|
||
|
|
return 'curio'
|
||
|
|
|
||
|
|
async def make_socket(self, af, socktype, proto=0,
|
||
|
|
source=None, destination=None, timeout=None,
|
||
|
|
ssl_context=None, server_hostname=None):
|
||
|
|
if socktype == socket.SOCK_DGRAM:
|
||
|
|
s = curio.socket.socket(af, socktype, proto)
|
||
|
|
try:
|
||
|
|
if source:
|
||
|
|
s.bind(_lltuple(source, af))
|
||
|
|
except Exception: # pragma: no cover
|
||
|
|
await s.close()
|
||
|
|
raise
|
||
|
|
return DatagramSocket(s)
|
||
|
|
elif socktype == socket.SOCK_STREAM:
|
||
|
|
if source:
|
||
|
|
source_addr = _lltuple(source, af)
|
||
|
|
else:
|
||
|
|
source_addr = None
|
||
|
|
async with _maybe_timeout(timeout):
|
||
|
|
s = await curio.open_connection(destination[0], destination[1],
|
||
|
|
ssl=ssl_context,
|
||
|
|
source_addr=source_addr,
|
||
|
|
server_hostname=server_hostname)
|
||
|
|
return StreamSocket(s)
|
||
|
|
raise NotImplementedError('unsupported socket ' +
|
||
|
|
f'type {socktype}') # pragma: no cover
|
||
|
|
|
||
|
|
async def sleep(self, interval):
|
||
|
|
await curio.sleep(interval)
|