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