149 lines
4.4 KiB
Python
149 lines
4.4 KiB
Python
"""
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src/network/proxy.py
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====================
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"""
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# pylint: disable=protected-access
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import socket
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import time
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import asyncore_pollchoose as asyncore
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import state
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from advanceddispatcher import AdvancedDispatcher
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from bmconfigparser import BMConfigParser
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from debug import logger
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class ProxyError(Exception):
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"""Base proxy exception class"""
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errorCodes = ("Unknown error",)
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def __init__(self, code=-1):
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self.code = code
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try:
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self.message = self.errorCodes[code]
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except IndexError:
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self.message = self.errorCodes[-1]
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super(ProxyError, self).__init__(self.message)
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class GeneralProxyError(ProxyError):
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"""General proxy error class (not specfic to an implementation)"""
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errorCodes = (
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"Success",
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"Invalid data",
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"Not connected",
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"Not available",
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"Bad proxy type",
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"Bad input",
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"Timed out",
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"Network unreachable",
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"Connection refused",
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"Host unreachable"
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)
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class Proxy(AdvancedDispatcher):
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"""Base proxy class"""
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# these are global, and if you change config during runtime,
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# all active/new instances should change too
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_proxy = ("127.0.0.1", 9050)
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_auth = None
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_onion_proxy = None
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_onion_auth = None
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_remote_dns = True
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@property
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def proxy(self):
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"""Return proxy IP and port"""
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return self.__class__._proxy
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@proxy.setter
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def proxy(self, address):
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"""Set proxy IP and port"""
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if (not isinstance(address, tuple) or len(address) < 2 or
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not isinstance(address[0], str) or
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not isinstance(address[1], int)):
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raise ValueError
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self.__class__._proxy = address
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@property
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def auth(self):
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"""Return proxy authentication settings"""
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return self.__class__._auth
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@auth.setter
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def auth(self, authTuple):
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"""Set proxy authentication (username and password)"""
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self.__class__._auth = authTuple
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@property
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def onion_proxy(self):
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"""
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Return separate proxy IP and port for use only with onion
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addresses. Untested.
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"""
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return self.__class__._onion_proxy
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@onion_proxy.setter
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def onion_proxy(self, address):
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"""Set onion proxy address"""
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if address is not None and (
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not isinstance(address, tuple) or len(address) < 2 or
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not isinstance(address[0], str) or
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not isinstance(address[1], int)):
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raise ValueError
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self.__class__._onion_proxy = address
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@property
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def onion_auth(self):
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"""Return proxy authentication settings for onion hosts only"""
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return self.__class__._onion_auth
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@onion_auth.setter
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def onion_auth(self, authTuple):
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"""Set proxy authentication for onion hosts only. Untested."""
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self.__class__._onion_auth = authTuple
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def __init__(self, address):
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if not isinstance(address, state.Peer):
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raise ValueError
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AdvancedDispatcher.__init__(self)
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self.destination = address
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self.isOutbound = True
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self.fullyEstablished = False
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self.connectedAt = 0
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self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
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if BMConfigParser().safeGetBoolean(
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"bitmessagesettings", "socksauthentication"):
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self.auth = (
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BMConfigParser().safeGet(
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"bitmessagesettings", "socksusername"),
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BMConfigParser().safeGet(
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"bitmessagesettings", "sockspassword")
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)
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else:
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self.auth = None
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self.connect(
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self.onion_proxy
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if address.host.endswith(".onion") and self.onion_proxy else
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self.proxy
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)
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def handle_connect(self):
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"""Handle connection event (to the proxy)"""
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self.set_state("init")
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try:
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AdvancedDispatcher.handle_connect(self)
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except socket.error as e:
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if e.errno in asyncore._DISCONNECTED:
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logger.debug(
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"%s:%i: Connection failed: %s",
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self.destination.host, self.destination.port, e)
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return
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self.state_init()
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def state_proxy_handshake_done(self):
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"""Handshake is complete at this point"""
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self.connectedAt = time.time() # pylint: disable=attribute-defined-outside-init
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return False
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