1485 lines
56 KiB
Python
1485 lines
56 KiB
Python
# -*- coding:utf-8 -*-
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## src/common/socks5.py
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##
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## Copyright (C) 2005-2006 Dimitur Kirov <dkirov AT gmail.com>
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## Nikos Kouremenos <kourem AT gmail.com>
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## Copyright (C) 2005-2014 Yann Leboulanger <asterix AT lagaule.org>
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## Copyright (C) 2006-2008 Jean-Marie Traissard <jim AT lapin.org>
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## Copyright (C) 2008 Jonathan Schleifer <js-gajim AT webkeks.org>
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##
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## This file is part of Gajim.
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##
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## Gajim is free software; you can redistribute it and/or modify
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## it under the terms of the GNU General Public License as published
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## by the Free Software Foundation; version 3 only.
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##
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## Gajim is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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##
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## You should have received a copy of the GNU General Public License
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## along with Gajim. If not, see <http://www.gnu.org/licenses/>.
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##
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import socket
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import struct
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import hashlib
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import os
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import time
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from errno import EWOULDBLOCK
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from errno import ENOBUFS
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from errno import EINTR
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from errno import EISCONN
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from errno import EINPROGRESS
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from errno import EAFNOSUPPORT
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from nbxmpp.idlequeue import IdleObject
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from gajim.common.file_props import FilesProp
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from gajim.common import app
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from gajim.common import jingle_xtls
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if jingle_xtls.PYOPENSSL_PRESENT:
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import OpenSSL
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import logging
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log = logging.getLogger('gajim.c.socks5')
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MAX_BUFF_LEN = 65536
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# after foo seconds without activity label transfer as 'stalled'
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STALLED_TIMEOUT = 10
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# after foo seconds of waiting to connect, disconnect from
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# streamhost and try next one
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CONNECT_TIMEOUT = 30
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# nothing received for the last foo seconds - stop transfer
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# if it is 0, then transfer will wait forever
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READ_TIMEOUT = 180
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# nothing sent for the last foo seconds - stop transfer
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# if it is 0, then transfer will wait forever
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SEND_TIMEOUT = 180
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class SocksQueue:
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"""
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Queue for all file requests objects
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"""
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def __init__(self, idlequeue, complete_transfer_cb=None,
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progress_transfer_cb=None, error_cb=None):
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self.connected = 0
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self.readers = {}
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self.senders = {}
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self.idx = 1
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self.listener = None
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self.sha_handlers = {}
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# handle all io events in the global idle queue, instead of processing
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# each foo seconds
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self.idlequeue = idlequeue
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self.complete_transfer_cb = complete_transfer_cb
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self.progress_transfer_cb = progress_transfer_cb
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self.error_cb = error_cb
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self.on_success = {} # {id: cb}
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self.on_failure = {} # {id: cb}
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def start_listener(self, port, sha_str, sha_handler, file_props,
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fingerprint=None, typ='sender'):
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"""
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Start waiting for incomming connections on (host, port) and do a socks5
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authentication using sid for generated SHA
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"""
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log.debug('Start listening for socks5 connection')
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sid = file_props.sid
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self.sha_handlers[sha_str] = (sha_handler, sid)
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if self.listener is None or self.listener.connections == []:
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self.listener = Socks5Listener(self.idlequeue, port, file_props,
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fingerprint=fingerprint)
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self.listener.queue = self
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self.listener.bind()
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else:
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# There is already a listener, we update the file's information
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# on the new connection.
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self.listener.file_props = file_props
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self.connected += 1
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return self.listener
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def send_success_reply(self, file_props, streamhost):
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if file_props.streamhost_used == True:
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for proxy in file_props.proxyhosts:
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if proxy['host'] == streamhost['host']:
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self.on_success[file_props.transport_sid](proxy)
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return 1
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return 0
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for host in file_props.streamhosts:
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if streamhost['state'] == 1:
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return 0
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streamhost['state'] = 1
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self.on_success[file_props.transport_sid](streamhost)
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return 1
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def connect_to_hosts(self, account, transport_sid, on_success=None,
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on_failure=None, fingerprint=None, receiving=True):
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self.on_success[transport_sid] = on_success
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self.on_failure[transport_sid] = on_failure
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file_props = FilesProp.getFilePropByTransportSid(account, transport_sid)
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file_props.failure_cb = on_failure
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streamhosts_to_test = []
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# Remove local IPs to not connect to ourself
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for streamhost in file_props.streamhosts:
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if streamhost['host'] == '127.0.0.1' or streamhost['host'] == '::1':
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continue
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streamhosts_to_test.append(streamhost)
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if not streamhosts_to_test:
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on_failure(file_props.transport_sid)
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# add streamhosts to the queue
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for streamhost in streamhosts_to_test:
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if 'type' in streamhost and streamhost['type'] == 'proxy':
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fp = None
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else:
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fp = fingerprint
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if receiving:
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if 'candidate_id' in streamhost:
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log.debug('Trying to connect as receiver to cid ' + \
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streamhost['candidate_id'])
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else:
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log.debug('Trying to connect as receiver to jid ' + \
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streamhost['jid'])
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file_props.type_ = 'r'
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socks5obj = Socks5ReceiverClient(self.idlequeue, streamhost,
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transport_sid, file_props, fingerprint=fp)
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self.add_sockobj(account, socks5obj)
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else:
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if 'candidate_id' in streamhost:
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log.debug('Trying to connect as sender to cid ' + \
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streamhost['candidate_id'])
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else:
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log.debug('Trying to connect as sender to jid ' + \
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streamhost['jid'])
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if file_props.sha_str:
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idx = file_props.sha_str
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else:
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idx = self.idx
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self.idx = self.idx + 1
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file_props.type_ = 's'
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if 'type' in streamhost and streamhost['type'] == 'proxy':
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file_props.is_a_proxy = True
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file_props.proxy_sender = streamhost['target']
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file_props.proxy_receiver = streamhost['initiator']
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socks5obj = Socks5SenderClient(self.idlequeue, idx,
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self, _sock=None,host=str(streamhost['host']),
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port=int(streamhost['port']),fingerprint=fp,
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connected=False, file_props=file_props,
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initiator=streamhost['initiator'],
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target=streamhost['target'])
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socks5obj.streamhost = streamhost
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self.add_sockobj(account, socks5obj)
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streamhost['idx'] = socks5obj.queue_idx
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def _socket_connected(self, streamhost, file_props):
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"""
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Called when there is a host connected to one of the senders's
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streamhosts. Stop other attempts for connections
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"""
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if 'candidate_id' in streamhost:
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log.debug('Connected to cid ' + streamhost['candidate_id'])
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else:
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log.debug('Connected to jid ' + streamhost['jid'])
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for host in file_props.streamhosts:
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if host != streamhost and 'idx' in host:
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if host['state'] == 1:
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# remove current
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if file_props.type_ == 's':
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self.remove_sender(streamhost['idx'], False)
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else:
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self.remove_receiver(streamhost['idx'])
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return
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# set state -2, meaning that this streamhost is stopped,
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# but it may be connectected later
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if host['state'] >= 0:
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if file_props.type_ == 's':
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self.remove_sender(host['idx'], False)
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else:
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self.remove_receiver(host['idx'])
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host['idx'] = -1
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host['state'] = -2
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def reconnect_client(self, client, streamhost):
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"""
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Check the state of all streamhosts and if all has failed, then emit
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connection failure cb. If there are some which are still not connected
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try to establish connection to one of them
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"""
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self.idlequeue.remove_timeout(client.fd)
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self.idlequeue.unplug_idle(client.fd)
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file_props = client.file_props
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streamhost['state'] = -1
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# boolean, indicates that there are hosts, which are not tested yet
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unused_hosts = False
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for host in file_props.streamhosts:
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if 'idx' in host:
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if host['state'] >= 0:
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return
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elif host['state'] == -2:
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unused_hosts = True
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if unused_hosts:
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for host in file_props.streamhosts:
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if host['state'] == -2:
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host['state'] = 0
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# FIXME: make the sender reconnect also
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client = Socks5ReceiverClient(self.idlequeue, host,
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client.sid, file_props)
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self.add_sockobj(client.account, client)
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host['idx'] = client.queue_idx
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# we still have chances to connect
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return
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if file_props.received_len == 0:
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# there are no other streamhosts and transfer hasn't started
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self._connection_refused(streamhost, file_props, client.queue_idx)
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else:
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# transfer stopped, it is most likely stopped from sender
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client.disconnect()
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file_props.error = -1
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self.process_result(-1, client)
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def _connection_refused(self, streamhost, file_props, idx):
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"""
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Called when we loose connection during transfer
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"""
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if 'candidate_id' in streamhost:
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log.debug('Connection refused to cid ' + streamhost['candidate_id'])
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else:
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log.debug('Connection refused to jid ' + streamhost['jid'])
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if file_props is None:
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return
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streamhost['state'] = -1
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# FIXME: should only the receiver be remove? what if we are sending?
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self.remove_receiver(idx, False)
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for host in file_props.streamhosts:
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if host['state'] != -1:
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return
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self.readers = {}
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# failure_cb exists - this means that it has never been called
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if file_props.failure_cb:
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file_props.failure_cb(file_props.transport_sid)
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file_props.failure_cb = None
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def add_sockobj(self, account, sockobj):
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"""
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Add new file a sockobj type receiver or sender, and use it to connect
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to server
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"""
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if sockobj.file_props.type_ == 'r':
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self._add(sockobj, self.readers, sockobj.file_props, self.idx)
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else:
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self._add(sockobj, self.senders, sockobj.file_props, self.idx)
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sockobj.queue_idx = self.idx
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sockobj.queue = self
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sockobj.account = account
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self.idx += 1
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result = sockobj.connect()
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self.connected += 1
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if result is not None:
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result = sockobj.main()
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self.process_result(result, sockobj)
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return 1
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return None
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def _add(self, sockobj, sockobjects, file_props, hash_):
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'''
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Adds the sockobj to the current list of sockobjects
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'''
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keys = (file_props.transport_sid, file_props.name, hash_)
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sockobjects[keys] = sockobj
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def result_sha(self, sha_str, idx):
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if sha_str in self.sha_handlers:
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props = self.sha_handlers[sha_str]
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props[0](props[1], idx)
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def activate_proxy(self, idx):
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if not self.isHashInSockObjs(self.senders, idx):
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return
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for key in self.senders.keys():
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if idx in key:
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sender = self.senders[key]
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if sender.file_props.type_ != 's':
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return
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sender.state = 6
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if sender.connected:
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sender.file_props.error = 0
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sender.file_props.disconnect_cb = sender.disconnect
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sender.file_props.started = True
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sender.file_props.completed = False
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sender.file_props.paused = False
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sender.file_props.stalled = False
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sender.file_props.elapsed_time = 0
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sender.file_props.last_time = time.time()
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sender.file_props.received_len = 0
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sender.pauses = 0
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# start sending file to proxy
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self.idlequeue.set_read_timeout(sender.fd, STALLED_TIMEOUT)
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self.idlequeue.plug_idle(sender, True, False)
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result = sender.write_next()
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self.process_result(result, sender)
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def send_file(self, file_props, account, mode):
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for key in self.senders.keys():
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if file_props.name in key and file_props.transport_sid in key \
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and self.senders[key].mode == mode:
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log.info('socks5: sending file')
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sender = self.senders[key]
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file_props.streamhost_used = True
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sender.account = account
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sender.file_props = file_props
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result = sender.send_file()
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self.process_result(result, sender)
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def isHashInSockObjs(self, sockobjs, hash):
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'''
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It tells wether there is a particular hash in sockobjs or not
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'''
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for key in sockobjs:
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if hash in key:
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return True
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return False
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def on_connection_accepted(self, sock, listener):
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sock_hash = sock.__hash__()
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if listener.file_props.type_ == 's' and \
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not self.isHashInSockObjs(self.senders, sock_hash):
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sockobj = Socks5SenderServer(self.idlequeue, sock_hash, self,
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sock[0], sock[1][0], sock[1][1], fingerprint=None,
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file_props=listener.file_props)
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self._add(sockobj, self.senders, listener.file_props, sock_hash)
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# Start waiting for data
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self.idlequeue.plug_idle(sockobj, False, True)
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self.connected += 1
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if listener.file_props.type_ == 'r' and \
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not self.isHashInSockObjs(self.readers, sock_hash):
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sh = {}
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sh['host'] = sock[1][0]
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sh['port'] = sock[1][1]
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sh['initiator'] = None
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sh['target'] = None
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sockobj = Socks5ReceiverServer(idlequeue=self.idlequeue,
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streamhost=sh,transport_sid=None,
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file_props=listener.file_props, fingerprint=None)
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self._add(sockobj, self.readers, listener.file_props, sock_hash)
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sockobj.set_sock(sock[0])
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sockobj.queue = self
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self.connected += 1
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def process_result(self, result, actor):
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"""
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Take appropriate actions upon the result:
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[ 0, - 1 ] complete/end transfer
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[ > 0 ] send progress message
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[ None ] do nothing
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"""
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if result is None:
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return
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if result in (0, -1) and self.complete_transfer_cb is not None:
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account = actor.account
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if account is None and actor.file_props.tt_account:
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account = actor.file_props.tt_account
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self.complete_transfer_cb(account, actor.file_props)
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elif self.progress_transfer_cb is not None:
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self.progress_transfer_cb(actor.account, actor.file_props)
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def remove_receiver_by_key(self, key, do_disconnect=True):
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reader = self.readers[key]
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self.idlequeue.unplug_idle(reader.fd)
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self.idlequeue.remove_timeout(reader.fd)
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if do_disconnect:
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reader.disconnect()
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else:
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if reader.streamhost is not None:
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reader.streamhost['state'] = -1
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del(self.readers[key])
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def remove_sender_by_key(self, key, do_disconnect=True):
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sender = self.senders[key]
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if do_disconnect:
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sender.disconnect()
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self.idlequeue.unplug_idle(sender.fd)
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self.idlequeue.remove_timeout(sender.fd)
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del(self.senders[key])
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if self.connected > 0:
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self.connected -= 1
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def remove_receiver(self, idx, do_disconnect=True, remove_all=False):
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"""
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Remove reciver from the list and decrease the number of active
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connections with 1
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"""
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if idx != -1:
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for key in list(self.readers.keys()):
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if idx in key:
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self.remove_receiver_by_key(key,
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do_disconnect=do_disconnect)
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if not remove_all:
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break
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def remove_sender(self, idx, do_disconnect=True, remove_all=False):
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"""
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Remove sender from the list of senders and decrease the number of active
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connections with 1
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"""
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if idx != -1:
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for key in self.senders.keys():
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if idx in key:
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self.remove_sender_by_key(key, do_disconnect=do_disconnect)
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if not remove_all:
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break
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if len(self.senders) == 0 and self.listener is not None:
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self.listener.disconnect()
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self.listener = None
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self.connected -= 1
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def remove_by_mode(self, transport_sid, mode, do_disconnect=True):
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for (key, sock) in self.senders.copy().items():
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if key[0] == transport_sid and sock.mode == mode:
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self.remove_sender_by_key(key)
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for (key, sock) in self.readers.copy().items():
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if key[0] == transport_sid and sock.mode == mode:
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self.remove_receiver_by_key(key)
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def remove_server(self, transport_sid, do_disconnect=True):
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self.remove_by_mode(transport_sid, 'server')
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def remove_client(self, transport_sid, do_disconnect=True):
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self.remove_by_mode(transport_sid, 'client')
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def remove_other_servers(self, host_to_keep):
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for (key, sock) in self.senders.copy().items():
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if sock.host != host_to_keep and sock.mode == 'server':
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self.remove_sender_by_key(key)
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|
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class Socks5(object):
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def __init__(self, idlequeue, host, port, initiator, target, sid):
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if host is not None:
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try:
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self.host = host
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self.ais = socket.getaddrinfo(host, port, socket.AF_UNSPEC,
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socket.SOCK_STREAM)
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except socket.gaierror:
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self.ais = None
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self.idlequeue = idlequeue
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self.fd = -1
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self.port = port
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self.initiator = initiator
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self.target = target
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self.sid = sid
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self._sock = None
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self.account = None
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self.state = 0 # not connected
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self.pauses = 0
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self.size = 0
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self.remaining_buff = b''
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self.file = None
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self.connected = False
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self.mode = ''
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self.ssl_cert = None
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self.ssl_errnum = 0
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def _is_connected(self):
|
|
if self.state < 5:
|
|
return False
|
|
return True
|
|
|
|
def ssl_verify_cb(self, ssl_conn, cert, error_num, depth, return_code):
|
|
if depth == 0:
|
|
self.ssl_cert = cert
|
|
self.ssl_errnum = error_num
|
|
return True
|
|
|
|
def connect(self):
|
|
"""
|
|
Create the socket and plug it to the idlequeue
|
|
"""
|
|
if self.ais is None:
|
|
return None
|
|
for ai in self.ais:
|
|
try:
|
|
self._sock = socket.socket(*ai[:3])
|
|
if self.fingerprint is not None:
|
|
if self.file_props.type_ == 's':
|
|
remote_jid = app.get_jid_without_resource(
|
|
self.file_props.receiver)
|
|
else:
|
|
remote_jid = app.get_jid_without_resource(
|
|
self.file_props.sender)
|
|
self._sock = OpenSSL.SSL.Connection(
|
|
jingle_xtls.get_context('client',
|
|
verify_cb=self.ssl_verify_cb, remote_jid=remote_jid),
|
|
self._sock)
|
|
# this will not block the GUI
|
|
self._sock.setblocking(False)
|
|
self._server = ai[4]
|
|
break
|
|
except socket.error as e:
|
|
if e.errno == EINPROGRESS:
|
|
break
|
|
# for all other errors, we try other addresses
|
|
continue
|
|
self.fd = self._sock.fileno()
|
|
self.state = 0 # about to be connected
|
|
self.idlequeue.plug_idle(self, True, False)
|
|
self.do_connect()
|
|
self.idlequeue.set_read_timeout(self.fd, CONNECT_TIMEOUT)
|
|
return None
|
|
|
|
def do_connect(self):
|
|
try:
|
|
self._sock.connect(self._server)
|
|
self._send=self._sock.send
|
|
self._recv=self._sock.recv
|
|
except (OpenSSL.SSL.WantReadError, OpenSSL.SSL.WantWriteError) as e:
|
|
pass
|
|
except Exception as ee:
|
|
errnum = ee.errno
|
|
self.connect_timeout += 1
|
|
if errnum == 111 or self.connect_timeout > 1000:
|
|
self.queue._connection_refused(self.streamhost, self.file_props,
|
|
self.queue_idx)
|
|
self.connected = False
|
|
return None
|
|
# win32 needs this
|
|
elif errnum not in (10056, EISCONN) or self.state != 0:
|
|
return None
|
|
else: # socket is already connected
|
|
self._sock.setblocking(False)
|
|
self._send=self._sock.send
|
|
self._recv=self._sock.recv
|
|
self.buff = ''
|
|
self.connected = True
|
|
self.file_props.connected = True
|
|
self.file_props.disconnect_cb = self.disconnect
|
|
self.file_props.paused = False
|
|
self.state = 1 # connected
|
|
# stop all others connections to sender's streamhosts
|
|
self.queue._socket_connected(self.streamhost, self.file_props)
|
|
self.idlequeue.plug_idle(self, True, False)
|
|
return 1 # we are connected
|
|
|
|
def read_timeout(self):
|
|
self.idlequeue.remove_timeout(self.fd)
|
|
if self.state > 5:
|
|
# no activity for foo seconds
|
|
if self.file_props.stalled == False:
|
|
self.file_props.stalled = True
|
|
self.queue.process_result(-1, self)
|
|
if not self.file_props.received_len:
|
|
self.file_props.received_len = 0
|
|
if SEND_TIMEOUT > 0:
|
|
self.idlequeue.set_read_timeout(self.fd, SEND_TIMEOUT)
|
|
else:
|
|
# stop transfer, there is no error code for this
|
|
self.pollend()
|
|
else:
|
|
if self.mode == 'client':
|
|
self.queue.reconnect_client(self, self.streamhost)
|
|
|
|
def open_file_for_reading(self):
|
|
if self.file is None:
|
|
try:
|
|
self.file = open(self.file_props.file_name, 'rb')
|
|
if self.file_props.offset:
|
|
self.size = self.file_props.offset
|
|
self.file.seek(self.size)
|
|
self.file_props.received_len = self.size
|
|
except IOError as e:
|
|
self.close_file()
|
|
raise IOError(str(e))
|
|
|
|
def close_file(self):
|
|
# Close file we're sending from
|
|
if self.file:
|
|
if not self.file.closed:
|
|
try:
|
|
self.file.close()
|
|
except Exception:
|
|
pass
|
|
self.file = None
|
|
# Close file we're receiving into
|
|
if self.file_props.fd and self.state >= 7:
|
|
try:
|
|
self.file_props.fd.close()
|
|
except Exception:
|
|
pass
|
|
|
|
def get_fd(self):
|
|
"""
|
|
Test if file is already open and return its fd, or just open the file
|
|
and return the fd
|
|
"""
|
|
if self.file_props.fd:
|
|
fd = self.file_props.fd
|
|
else:
|
|
offset = 0
|
|
opt = 'wb'
|
|
if self.file_props.offset:
|
|
offset = self.file_props.offset
|
|
opt = 'ab'
|
|
fd = open(self.file_props.file_name, opt)
|
|
self.file_props.fd = fd
|
|
self.file_props.elapsed_time = 0
|
|
self.file_props.last_time = time.time()
|
|
self.file_props.received_len = offset
|
|
return fd
|
|
|
|
def rem_fd(self, fd):
|
|
if self.file_props.fd:
|
|
self.file_props.fd = None
|
|
try:
|
|
fd.close()
|
|
except Exception:
|
|
pass
|
|
|
|
def receive(self):
|
|
"""
|
|
Read small chunks of data. Call owner's disconnected() method if
|
|
appropriate
|
|
"""
|
|
received = b''
|
|
try:
|
|
add = self._recv(64)
|
|
except (OpenSSL.SSL.WantReadError, OpenSSL.SSL.WantWriteError,
|
|
OpenSSL.SSL.WantX509LookupError) as e:
|
|
log.info('SSL rehandshake request : ' + repr(e))
|
|
raise e
|
|
except Exception:
|
|
add = b''
|
|
received += add
|
|
if len(add) == 0:
|
|
self.disconnect()
|
|
return add
|
|
|
|
def send_raw(self, raw_data):
|
|
"""
|
|
Write raw outgoing data
|
|
"""
|
|
try:
|
|
self._send(raw_data)
|
|
except (OpenSSL.SSL.WantReadError, OpenSSL.SSL.WantWriteError,
|
|
OpenSSL.SSL.WantX509LookupError) as e:
|
|
log.info('SSL rehandshake request :' + repr(e))
|
|
raise e
|
|
except Exception:
|
|
self.disconnect()
|
|
return len(raw_data)
|
|
|
|
def write_next(self):
|
|
if self.remaining_buff != b'':
|
|
buff = self.remaining_buff
|
|
else:
|
|
try:
|
|
self.open_file_for_reading()
|
|
except IOError:
|
|
self.state = 8 # end connection
|
|
self.disconnect()
|
|
self.file_props.error = -7 # unable to read from file
|
|
return -1
|
|
buff = self.file.read(MAX_BUFF_LEN)
|
|
if len(buff) > 0:
|
|
lenn = 0
|
|
try:
|
|
lenn = self._send(buff)
|
|
except (OpenSSL.SSL.WantReadError, OpenSSL.SSL.WantWriteError,
|
|
OpenSSL.SSL.WantX509LookupError) as e:
|
|
log.info('SSL rehandshake request :' + repr(e))
|
|
raise e
|
|
except Exception as e:
|
|
if e.errno not in (EINTR, ENOBUFS, EWOULDBLOCK):
|
|
# peer stopped reading
|
|
self.state = 8 # end connection
|
|
self.disconnect()
|
|
self.file_props.error = -1
|
|
return -1
|
|
self.size += lenn
|
|
current_time = time.time()
|
|
self.file_props.elapsed_time += current_time - \
|
|
self.file_props.last_time
|
|
self.file_props.last_time = current_time
|
|
self.file_props.received_len = self.size
|
|
if self.size >= self.file_props.size:
|
|
self.state = 8 # end connection
|
|
self.file_props.error = 0
|
|
self.disconnect()
|
|
return -1
|
|
if lenn != len(buff):
|
|
self.remaining_buff = buff[lenn:]
|
|
else:
|
|
self.remaining_buff = b''
|
|
self.state = 7 # continue to write in the socket
|
|
if lenn == 0:
|
|
return None
|
|
self.file_props.stalled = False
|
|
return lenn
|
|
else:
|
|
self.state = 8 # end connection
|
|
self.disconnect()
|
|
return -1
|
|
|
|
def get_file_contents(self, timeout):
|
|
"""
|
|
Read file contents from socket and write them to file
|
|
"""
|
|
if self.file_props is None or not self.file_props.file_name:
|
|
self.file_props.error = -2
|
|
return None
|
|
fd = None
|
|
if self.remaining_buff != b'':
|
|
try:
|
|
fd = self.get_fd()
|
|
except IOError:
|
|
self.disconnect(False)
|
|
self.file_props.error = -6 # file system error
|
|
return 0
|
|
fd.write(self.remaining_buff)
|
|
lenn = len(self.remaining_buff)
|
|
current_time = time.time()
|
|
self.file_props.elapsed_time += current_time - \
|
|
self.file_props.last_time
|
|
self.file_props.last_time = current_time
|
|
self.file_props.received_len += lenn
|
|
self.remaining_buff = b''
|
|
if self.file_props.received_len == self.file_props.size:
|
|
self.rem_fd(fd)
|
|
self.disconnect()
|
|
self.file_props.error = 0
|
|
self.file_props.completed = True
|
|
return 0
|
|
else:
|
|
try:
|
|
fd = self.get_fd()
|
|
except IOError:
|
|
self.disconnect(False)
|
|
self.file_props.error = -6 # file system error
|
|
return 0
|
|
try:
|
|
buff = self._recv(MAX_BUFF_LEN)
|
|
except (OpenSSL.SSL.WantReadError, OpenSSL.SSL.WantWriteError,
|
|
OpenSSL.SSL.WantX509LookupError) as e:
|
|
log.info('SSL rehandshake request :' + repr(e))
|
|
raise e
|
|
except Exception:
|
|
buff = b''
|
|
current_time = time.time()
|
|
self.file_props.elapsed_time += current_time - \
|
|
self.file_props.last_time
|
|
self.file_props.last_time = current_time
|
|
self.file_props.received_len += len(buff)
|
|
if len(buff) == 0:
|
|
# Transfer stopped somehow:
|
|
# reset, paused or network error
|
|
self.rem_fd(fd)
|
|
self.disconnect()
|
|
self.file_props.error = -1
|
|
return 0
|
|
try:
|
|
fd.write(buff)
|
|
except IOError:
|
|
self.rem_fd(fd)
|
|
self.disconnect()
|
|
self.file_props.error = -6 # file system error
|
|
return 0
|
|
if self.file_props.received_len >= self.file_props.size:
|
|
# transfer completed
|
|
self.rem_fd(fd)
|
|
self.disconnect()
|
|
self.file_props.error = 0
|
|
self.file_props.completed = True
|
|
return 0
|
|
# return number of read bytes. It can be used in progressbar
|
|
if fd is not None:
|
|
self.file_props.stalled = False
|
|
if fd is None and self.file_props.stalled is False:
|
|
return None
|
|
if self.file_props.received_len:
|
|
if self.file_props.received_len != 0:
|
|
return self.file_props.received_len
|
|
return None
|
|
|
|
def disconnect(self):
|
|
"""
|
|
Close open descriptors and remover socket descr. from idleque
|
|
"""
|
|
# be sure that we don't leave open file
|
|
self.close_file()
|
|
self.idlequeue.remove_timeout(self.fd)
|
|
self.idlequeue.unplug_idle(self.fd)
|
|
if self.mode == 'server' and self.queue.listener:
|
|
try:
|
|
self.queue.listener.connections.remove(self._sock)
|
|
except ValueError:
|
|
pass # Not in list
|
|
if self.queue.listener.connections == []:
|
|
self.queue.listener.disconnect()
|
|
try:
|
|
if isinstance(self._sock, OpenSSL.SSL.Connection):
|
|
self._sock.shutdown()
|
|
else:
|
|
self._sock.shutdown(socket.SHUT_RDWR)
|
|
self._sock.close()
|
|
except Exception:
|
|
# socket is already closed
|
|
pass
|
|
self.connected = False
|
|
self.fd = -1
|
|
self.state = -1
|
|
|
|
def _get_auth_buff(self):
|
|
"""
|
|
Message, that we support 1 one auth mechanism: the 'no auth' mechanism
|
|
"""
|
|
return struct.pack('!BBB', 0x05, 0x01, 0x00)
|
|
|
|
def _parse_auth_buff(self, buff):
|
|
"""
|
|
Parse the initial message and create a list of auth mechanisms
|
|
"""
|
|
if buff[0] != 5:
|
|
return None
|
|
num_auth = buff[1]
|
|
return list(buff[2:2+num_auth])
|
|
|
|
def _get_auth_response(self):
|
|
"""
|
|
Socks version(5), number of extra auth methods (we send 0x00 - no auth)
|
|
"""
|
|
return struct.pack('!BB', 0x05, 0x00)
|
|
|
|
def _get_connect_buff(self):
|
|
"""
|
|
Connect request by domain name
|
|
"""
|
|
buff = struct.pack('!BBBBB%dsBB' % len(self.host),
|
|
0x05, 0x01, 0x00, 0x03, len(self.host), self.host.encode('utf-8'),
|
|
self.port >> 8, self.port & 0xff)
|
|
return buff
|
|
|
|
def _get_request_buff(self, msg, command = 0x01):
|
|
"""
|
|
Connect request by domain name, sid sha, instead of domain name (jep
|
|
0096)
|
|
"""
|
|
if isinstance(msg, str):
|
|
msg = msg.encode('utf-8')
|
|
buff = struct.pack('!BBBBB%dsBB' % len(msg), 0x05, command, 0x00, 0x03,
|
|
len(msg), msg, 0, 0)
|
|
return buff
|
|
|
|
def _parse_request_buff(self, buff):
|
|
try: # don't trust on what comes from the outside
|
|
req_type, host_type, = struct.unpack('!xBxB', buff[:4])
|
|
if host_type == 0x01:
|
|
host_arr = struct.unpack('!iiii', buff[4:8])
|
|
host, = '.'.join(str(s) for s in host_arr)
|
|
host_len = len(host)
|
|
elif host_type == 0x03:
|
|
host_len = buff[4]
|
|
host, = struct.unpack('!%ds' % host_len, buff[5:5 + host_len])
|
|
portlen = len(buff[host_len + 5:])
|
|
if portlen == 1:
|
|
port, = struct.unpack('!B', buff[host_len + 5])
|
|
elif portlen == 2:
|
|
port, = struct.unpack('!H', buff[host_len + 5:])
|
|
# file data, comes with auth message (Gaim bug)
|
|
else:
|
|
port, = struct.unpack('!H', buff[host_len + 5: host_len + 7])
|
|
self.remaining_buff = buff[host_len + 7:]
|
|
except Exception:
|
|
return (None, None, None)
|
|
return (req_type, host, port)
|
|
|
|
def read_connect(self):
|
|
"""
|
|
Connect response: version, auth method
|
|
"""
|
|
try:
|
|
buff = self._recv().decode('utf-8')
|
|
except (OpenSSL.SSL.WantReadError, OpenSSL.SSL.WantWriteError,
|
|
OpenSSL.SSL.WantX509LookupError) as e:
|
|
log.info("SSL rehandshake request : " + repr(e))
|
|
raise e
|
|
try:
|
|
version, method = struct.unpack('!BB', buff)
|
|
except Exception:
|
|
version, method = None, None
|
|
if version != 0x05 or method == 0xff:
|
|
self.disconnect()
|
|
|
|
def continue_paused_transfer(self):
|
|
if self.state < 5:
|
|
return
|
|
if self.file_props.type_ == 'r':
|
|
self.idlequeue.plug_idle(self, False, True)
|
|
else:
|
|
self.idlequeue.plug_idle(self, True, False)
|
|
|
|
def _get_sha1_auth(self):
|
|
"""
|
|
Get sha of sid + Initiator jid + Target jid
|
|
"""
|
|
if self.file_props.is_a_proxy:
|
|
return hashlib.sha1(('%s%s%s' % (self.sid,
|
|
self.file_props.proxy_sender, self.file_props.proxy_receiver)).\
|
|
encode('utf-8')).hexdigest()
|
|
return hashlib.sha1(('%s%s%s' % (self.sid, self.initiator,
|
|
self.target)).encode('utf-8')).hexdigest()
|
|
|
|
|
|
class Socks5Sender(IdleObject):
|
|
"""
|
|
Class for sending file to socket over socks5
|
|
"""
|
|
def __init__(self, idlequeue, sock_hash, parent, _sock, host=None,
|
|
port=None, fingerprint = None, connected=True, file_props=None):
|
|
self.fingerprint = fingerprint
|
|
self.queue_idx = sock_hash
|
|
self.queue = parent
|
|
self.file_props = file_props
|
|
self.proxy = False
|
|
self._sock = _sock
|
|
if _sock is not None:
|
|
if self.fingerprint is not None and not isinstance(self._sock,
|
|
OpenSSL.SSL.Connection):
|
|
self._sock = OpenSSL.SSL.Connection(
|
|
jingle_xtls.get_context('server'), _sock)
|
|
else:
|
|
self._sock.setblocking(False)
|
|
self.fd = _sock.fileno()
|
|
self._recv = _sock.recv
|
|
self._send = _sock.send
|
|
self.connected = connected
|
|
self.state = 1 # waiting for first bytes
|
|
self.connect_timeout = 0
|
|
|
|
self.file_props.error = 0
|
|
self.file_props.disconnect_cb = self.disconnect
|
|
self.file_props.started = True
|
|
self.file_props.completed = False
|
|
self.file_props.paused = False
|
|
self.file_props.continue_cb = self.continue_paused_transfer
|
|
self.file_props.stalled = False
|
|
self.file_props.connected = True
|
|
self.file_props.elapsed_time = 0
|
|
self.file_props.last_time = time.time()
|
|
self.file_props.received_len = 0
|
|
|
|
def start_transfer(self):
|
|
"""
|
|
Send the file
|
|
"""
|
|
return self.write_next()
|
|
|
|
def set_connection_sock(self, _sock):
|
|
self._sock = _sock
|
|
if self.fingerprint is not None:
|
|
self._sock = OpenSSL.SSL.Connection(
|
|
jingle_xtls.get_context('client'), _sock)
|
|
else:
|
|
self._sock.setblocking(False)
|
|
self.fd = _sock.fileno()
|
|
self._recv = _sock.recv
|
|
self._send = _sock.send
|
|
self.connected = True
|
|
self.state = 1 # waiting for first bytes
|
|
self.file_props = None
|
|
# start waiting for data
|
|
self.idlequeue.plug_idle(self, False, True)
|
|
|
|
def send_file(self):
|
|
"""
|
|
Start sending the file over verified connection
|
|
"""
|
|
self.pauses = 0
|
|
self.state = 7
|
|
# plug for writing
|
|
self.idlequeue.plug_idle(self, True, False)
|
|
return self.write_next() # initial for nl byte
|
|
|
|
def disconnect(self, cb=True):
|
|
"""
|
|
Close the socket
|
|
"""
|
|
# close connection and remove us from the queue
|
|
Socks5.disconnect(self)
|
|
if self.file_props is not None:
|
|
self.file_props.connected = False
|
|
self.file_props.disconnect_cb = None
|
|
if self.queue is not None:
|
|
self.queue.remove_sender(self.queue_idx, False)
|
|
|
|
|
|
class Socks5Receiver(IdleObject):
|
|
def __init__(self, idlequeue, streamhost, sid, file_props = None,
|
|
fingerprint=None):
|
|
"""
|
|
fingerprint: fingerprint of certificates we shall use, set to None if
|
|
TLS connection not desired
|
|
"""
|
|
self.queue_idx = -1
|
|
self.streamhost = streamhost
|
|
self.queue = None
|
|
self.fingerprint = fingerprint
|
|
self.connect_timeout = 0
|
|
self.connected = False
|
|
self.pauses = 0
|
|
self.sid = sid
|
|
self.file_props = file_props
|
|
self.file_props.disconnect_cb = self.disconnect
|
|
self.file_props.error = 0
|
|
self.file_props.started = True
|
|
self.file_props.completed = False
|
|
self.file_props.paused = False
|
|
self.file_props.continue_cb = self.continue_paused_transfer
|
|
self.file_props.stalled = False
|
|
self.file_props.received_len = 0
|
|
|
|
def receive_file(self):
|
|
"""
|
|
Start receiving the file over verified connection
|
|
"""
|
|
if self.file_props.started:
|
|
return
|
|
self.file_props.error = 0
|
|
self.file_props.disconnect_cb = self.disconnect
|
|
self.file_props.started = True
|
|
self.file_props.completed = False
|
|
self.file_props.paused = False
|
|
self.file_props.continue_cb = self.continue_paused_transfer
|
|
self.file_props.stalled = False
|
|
self.file_props.connected = True
|
|
self.file_props.elapsed_time = 0
|
|
self.file_props.last_time = time.time()
|
|
self.file_props.received_len = 0
|
|
self.pauses = 0
|
|
self.state = 7
|
|
# plug for reading
|
|
self.idlequeue.plug_idle(self, False, True)
|
|
return self.get_file_contents(0) # initial for nl byte
|
|
|
|
def start_transfer(self):
|
|
"""
|
|
Receive the file
|
|
"""
|
|
return self.get_file_contents(0)
|
|
|
|
def set_sock(self, _sock):
|
|
self._sock = _sock
|
|
self._sock.setblocking(False)
|
|
self.fd = _sock.fileno()
|
|
self._recv = _sock.recv
|
|
self._send = _sock.send
|
|
self.connected = True
|
|
self.state = 1 # waiting for first bytes
|
|
# start waiting for data
|
|
self.idlequeue.plug_idle(self, False, True)
|
|
|
|
def disconnect(self, cb=True):
|
|
"""
|
|
Close the socket. Remove self from queue if cb is True
|
|
"""
|
|
# close connection
|
|
Socks5.disconnect(self)
|
|
if cb is True:
|
|
self.file_props.disconnect_cb = None
|
|
if self.queue is not None:
|
|
self.queue.remove_receiver(self.queue_idx, False)
|
|
|
|
class Socks5Server(Socks5):
|
|
|
|
def __init__(self, idlequeue, host, port, initiator, target, sid):
|
|
Socks5.__init__(self, idlequeue, host, port, initiator, target, sid)
|
|
self.mode = 'server'
|
|
|
|
def main(self):
|
|
"""
|
|
Initial requests for verifying the connection
|
|
"""
|
|
if self.state == 1: # initial read
|
|
buff = self.receive()
|
|
if not self.connected:
|
|
return -1
|
|
mechs = self._parse_auth_buff(buff)
|
|
if mechs is None:
|
|
return -1 # invalid auth methods received
|
|
elif self.state == 3: # get next request
|
|
buff = self.receive()
|
|
req_type, self.sha_msg = self._parse_request_buff(buff)[:2]
|
|
if req_type != 0x01:
|
|
return -1 # request is not of type 'connect'
|
|
self.state += 1 # go to the next step
|
|
# unplug & plug for writing
|
|
self.idlequeue.plug_idle(self, True, False)
|
|
return None
|
|
|
|
def pollin(self):
|
|
self.idlequeue.remove_timeout(self.fd)
|
|
if self.connected:
|
|
try:
|
|
if self.state < 5:
|
|
result = self.main()
|
|
if self.state == 4:
|
|
self.queue.result_sha(self.sha_msg, self.queue_idx)
|
|
if result == -1:
|
|
self.disconnect()
|
|
elif self.state == 5:
|
|
self.state = 7
|
|
if self.file_props.type_ == 's':
|
|
# We wait for the end of the negotiation to
|
|
# send the file
|
|
self.idlequeue.plug_idle(self, False, False)
|
|
else:
|
|
# We plug for reading
|
|
self.idlequeue.plug_idle(self, False, True)
|
|
return
|
|
elif self.state == 7:
|
|
if self.file_props.paused:
|
|
self.file_props.continue_cb = \
|
|
self.continue_paused_transfer
|
|
self.idlequeue.plug_idle(self, False, False)
|
|
return
|
|
self.idlequeue.set_read_timeout(self.fd, STALLED_TIMEOUT)
|
|
result = self.start_transfer() # send
|
|
self.queue.process_result(result, self)
|
|
except (OpenSSL.SSL.WantReadError, OpenSSL.SSL.WantWriteError,
|
|
OpenSSL.SSL.WantX509LookupError) as e:
|
|
log.info('caught SSL exception, ignored')
|
|
else:
|
|
self.disconnect()
|
|
|
|
def pollend(self):
|
|
self.state = 8 # end connection
|
|
self.disconnect()
|
|
self.file_props.error = -1
|
|
self.queue.process_result(-1, self)
|
|
|
|
def pollout(self):
|
|
if not self.connected:
|
|
self.disconnect()
|
|
return
|
|
self.idlequeue.remove_timeout(self.fd)
|
|
try:
|
|
if self.state == 2: # send reply with desired auth type
|
|
self.send_raw(self._get_auth_response())
|
|
elif self.state == 4: # send positive response to the 'connect'
|
|
self.send_raw(self._get_request_buff(self.sha_msg, 0x00))
|
|
elif self.state == 7:
|
|
if self.file_props.paused:
|
|
self.file_props.continue_cb = self.continue_paused_transfer
|
|
self.idlequeue.plug_idle(self, False, False)
|
|
return
|
|
result = self.start_transfer() # send
|
|
self.queue.process_result(result, self)
|
|
if result is None or result <= 0:
|
|
self.disconnect()
|
|
return
|
|
self.idlequeue.set_read_timeout(self.fd, STALLED_TIMEOUT)
|
|
elif self.state == 8:
|
|
self.disconnect()
|
|
return
|
|
else:
|
|
self.disconnect()
|
|
except (OpenSSL.SSL.WantReadError, OpenSSL.SSL.WantWriteError,
|
|
OpenSSL.SSL.WantX509LookupError) as e:
|
|
log.info('caught SSL exception, ignored')
|
|
return
|
|
if self.state < 5:
|
|
self.state += 1
|
|
# unplug and plug this time for reading
|
|
self.idlequeue.plug_idle(self, False, True)
|
|
|
|
|
|
class Socks5Client(Socks5):
|
|
|
|
def __init__(self, idlequeue, host, port, initiator, target, sid):
|
|
Socks5.__init__(self, idlequeue, host, port, initiator, target, sid)
|
|
self.mode = 'client'
|
|
|
|
def main(self, timeout=0):
|
|
"""
|
|
Begin negotiation. on success 'address' != 0
|
|
"""
|
|
result = 1
|
|
buff = self.receive()
|
|
if buff == b'':
|
|
# end connection
|
|
self.pollend()
|
|
return
|
|
if self.state == 2: # read auth response
|
|
if buff is None or len(buff) != 2:
|
|
return None
|
|
version, method = struct.unpack('!BB', buff[:2])
|
|
if version != 0x05 or method == 0xff:
|
|
self.disconnect()
|
|
elif self.state == 4: # get approve of our request
|
|
if buff is None:
|
|
return None
|
|
sub_buff = buff[:4]
|
|
if len(sub_buff) < 4:
|
|
return None
|
|
version, address_type = struct.unpack('!BxxB', buff[:4])
|
|
addrlen = 0
|
|
if address_type == 0x03:
|
|
addrlen = buff[4]
|
|
address = struct.unpack('!%ds' % addrlen, buff[5:addrlen + 5])
|
|
portlen = len(buff[addrlen + 5:])
|
|
if portlen == 1:
|
|
port, = struct.unpack('!B', buff[addrlen + 5])
|
|
elif portlen == 2:
|
|
port, = struct.unpack('!H', buff[addrlen + 5:])
|
|
else: # Gaim bug :)
|
|
port, = struct.unpack('!H', buff[addrlen + 5:addrlen + 7])
|
|
self.remaining_buff = buff[addrlen + 7:]
|
|
self.state = 5 # for senders: init file_props and send '\n'
|
|
if self.queue.on_success:
|
|
result = self.queue.send_success_reply(self.file_props,
|
|
self.streamhost)
|
|
if self.file_props.type_ == 's' and self.proxy:
|
|
self.queue.process_result(self.send_file(), self)
|
|
return
|
|
if result == 0:
|
|
self.state = 8
|
|
self.disconnect()
|
|
# for senders: init file_props
|
|
if result == 1 and self.state == 5:
|
|
if self.file_props.type_ == 's':
|
|
self.file_props.error = 0
|
|
self.file_props.disconnect_cb = self.disconnect
|
|
self.file_props.started = True
|
|
self.file_props.completed = False
|
|
self.file_props.paused = False
|
|
self.file_props.stalled = False
|
|
self.file_props.elapsed_time = 0
|
|
self.file_props.last_time = time.time()
|
|
self.file_props.received_len = 0
|
|
self.pauses = 0
|
|
# start sending file contents to socket
|
|
#self.idlequeue.set_read_timeout(self.fd, STALLED_TIMEOUT)
|
|
#self.idlequeue.plug_idle(self, True, False)
|
|
self.idlequeue.plug_idle(self, False, False)
|
|
else:
|
|
# receiving file contents from socket
|
|
self.idlequeue.plug_idle(self, False, True)
|
|
self.file_props.continue_cb = self.continue_paused_transfer
|
|
# we have set up the connection, next - retrieve file
|
|
self.state = 6
|
|
if self.state < 5:
|
|
self.idlequeue.plug_idle(self, True, False)
|
|
self.state += 1
|
|
return None
|
|
|
|
def send_file(self):
|
|
if self.ssl_errnum > 0:
|
|
log.error('remote certificate does not match the announced one.' + \
|
|
'\nSSL Error: %d\nCancelling file transfer' % self.ssl_errnum)
|
|
self.file_props.error = -12
|
|
return -1
|
|
return super(Socks5Client, self).send_file()
|
|
|
|
def pollin(self):
|
|
self.idlequeue.remove_timeout(self.fd)
|
|
if self.connected:
|
|
try:
|
|
if self.file_props.paused:
|
|
self.idlequeue.plug_idle(self, False, False)
|
|
return
|
|
if self.state < 5:
|
|
self.idlequeue.set_read_timeout(self.fd, CONNECT_TIMEOUT)
|
|
result = self.main(0)
|
|
self.queue.process_result(result, self)
|
|
elif self.state == 5: # wait for proxy reply
|
|
pass
|
|
elif self.file_props.type_ == 'r':
|
|
self.idlequeue.set_read_timeout(self.fd, STALLED_TIMEOUT)
|
|
result = self.start_transfer() # receive
|
|
self.queue.process_result(result, self)
|
|
except (OpenSSL.SSL.WantReadError, OpenSSL.SSL.WantWriteError,
|
|
OpenSSL.SSL.WantX509LookupError) as e:
|
|
log.info('caught SSL exception, ignored')
|
|
return
|
|
else:
|
|
self.disconnect()
|
|
|
|
def pollout(self):
|
|
self.idlequeue.remove_timeout(self.fd)
|
|
try:
|
|
if self.state == 0:
|
|
self.do_connect()
|
|
return
|
|
elif self.state == 1: # send initially: version and auth types
|
|
self.send_raw(self._get_auth_buff())
|
|
elif self.state == 3: # send 'connect' request
|
|
self.send_raw(self._get_request_buff(self._get_sha1_auth()))
|
|
elif self.file_props.type_ != 'r':
|
|
if self.file_props.paused:
|
|
self.idlequeue.plug_idle(self, False, False)
|
|
return
|
|
result = self.start_transfer() # send
|
|
self.queue.process_result(result, self)
|
|
return
|
|
except (OpenSSL.SSL.WantReadError, OpenSSL.SSL.WantWriteError,
|
|
OpenSSL.SSL.WantX509LookupError) as e:
|
|
log.info('caught SSL exception, ignored')
|
|
return
|
|
self.state += 1
|
|
# unplug and plug for reading
|
|
self.idlequeue.plug_idle(self, False, True)
|
|
self.idlequeue.set_read_timeout(self.fd, CONNECT_TIMEOUT)
|
|
|
|
def pollend(self):
|
|
if self.state >= 5:
|
|
# error during transfer
|
|
self.disconnect()
|
|
self.file_props.error = -1
|
|
self.queue.process_result(-1, self)
|
|
else:
|
|
self.queue.reconnect_client(self, self.streamhost)
|
|
|
|
|
|
class Socks5SenderClient(Socks5Client, Socks5Sender):
|
|
|
|
def __init__(self, idlequeue, sock_hash, parent,_sock, host=None,
|
|
port=None, fingerprint = None, connected=True, file_props=None,
|
|
initiator=None, target=None):
|
|
Socks5Client.__init__(self, idlequeue, host, port, initiator, target,
|
|
file_props.transport_sid)
|
|
Socks5Sender.__init__(self,idlequeue, sock_hash, parent,_sock,
|
|
host, port, fingerprint , connected, file_props)
|
|
|
|
|
|
class Socks5SenderServer(Socks5Server, Socks5Sender):
|
|
|
|
def __init__(self, idlequeue, sock_hash, parent,_sock, host=None,
|
|
port=None, fingerprint = None, connected=True, file_props=None):
|
|
Socks5Server.__init__(self, idlequeue, host, port, None, None,
|
|
file_props.transport_sid)
|
|
Socks5Sender.__init__(self,idlequeue, sock_hash, parent, _sock,
|
|
host, port, fingerprint , connected, file_props)
|
|
|
|
|
|
class Socks5ReceiverClient(Socks5Client, Socks5Receiver):
|
|
def __init__(self, idlequeue, streamhost, transport_sid, file_props=None,
|
|
fingerprint=None):
|
|
Socks5Client.__init__(self, idlequeue, streamhost['host'],
|
|
int(streamhost['port']), streamhost['initiator'],
|
|
streamhost['target'], transport_sid)
|
|
Socks5Receiver.__init__(self, idlequeue, streamhost, transport_sid,
|
|
file_props, fingerprint)
|
|
|
|
|
|
class Socks5ReceiverServer(Socks5Server, Socks5Receiver):
|
|
|
|
def __init__(self, idlequeue, streamhost, transport_sid, file_props=None,
|
|
fingerprint=None):
|
|
Socks5Server.__init__(self, idlequeue, streamhost['host'],
|
|
int(streamhost['port']), streamhost['initiator'],
|
|
streamhost['target'], transport_sid)
|
|
Socks5Receiver.__init__(self, idlequeue, streamhost, transport_sid,
|
|
file_props, fingerprint)
|
|
|
|
|
|
class Socks5Listener(IdleObject):
|
|
def __init__(self, idlequeue, port, fp, fingerprint=None):
|
|
"""
|
|
Handle all incomming connections on (0.0.0.0, port)
|
|
|
|
This class implements IdleObject, but we will expect
|
|
only pollin events though
|
|
|
|
fingerprint: fingerprint of certificates we shall use, set to None if
|
|
TLS connection not desired
|
|
"""
|
|
self.port = port
|
|
self.ais = socket.getaddrinfo(None, port, socket.AF_UNSPEC,
|
|
socket.SOCK_STREAM, socket.SOL_TCP, socket.AI_PASSIVE)
|
|
self.ais.sort(reverse=True) # Try IPv6 first
|
|
self.queue_idx = -1
|
|
self.idlequeue = idlequeue
|
|
self.queue = None
|
|
self.started = False
|
|
self._sock = None
|
|
self.fd = -1
|
|
self.fingerprint = fingerprint
|
|
self.file_props = fp
|
|
self.connections = []
|
|
|
|
def bind(self):
|
|
for ai in self.ais:
|
|
# try the different possibilities (ipv6, ipv4, etc.)
|
|
try:
|
|
self._serv = socket.socket(*ai[:3])
|
|
if self.fingerprint is not None:
|
|
self._serv = OpenSSL.SSL.Connection(
|
|
jingle_xtls.get_context('server'), self._serv)
|
|
except socket.error as e:
|
|
if e.errno == EAFNOSUPPORT:
|
|
self.ai = None
|
|
continue
|
|
raise
|
|
self._serv.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
|
|
self._serv.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
|
|
self._serv.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
|
|
# Under windows Vista, we need that to listen on ipv6 AND ipv4
|
|
# Doesn't work under windows XP
|
|
if os.name == 'nt':
|
|
ver = os.sys.getwindowsversion()
|
|
if (ver[3], ver[0]) == (2, 6): # Win Vista +
|
|
# 47 is socket.IPPROTO_IPV6
|
|
# 27 is socket.IPV6_V6ONLY under windows, but not defined ...
|
|
self._serv.setsockopt(41, 27, 0)
|
|
# will fail when port as busy, or we don't have rights to bind
|
|
try:
|
|
self._serv.bind(ai[4])
|
|
f = ai[4]
|
|
self.ai = ai
|
|
break
|
|
except Exception:
|
|
self.ai = None
|
|
continue
|
|
if not self.ai:
|
|
log.error('unable to bind to port ' + str(self.port))
|
|
return None
|
|
self._serv.listen(socket.SOMAXCONN)
|
|
self._serv.setblocking(False)
|
|
self.fd = self._serv.fileno()
|
|
self.idlequeue.plug_idle(self, False, True)
|
|
self.started = True
|
|
|
|
def pollend(self):
|
|
"""
|
|
Called when we stop listening on (host, port)
|
|
"""
|
|
self.disconnect()
|
|
|
|
def pollin(self):
|
|
"""
|
|
Accept a new incomming connection and notify queue
|
|
"""
|
|
sock = self.accept_conn()
|
|
self.queue.on_connection_accepted(sock, self)
|
|
|
|
def disconnect(self):
|
|
"""
|
|
Free all resources, we are not listening anymore
|
|
"""
|
|
self.idlequeue.remove_timeout(self.fd)
|
|
self.idlequeue.unplug_idle(self.fd)
|
|
self.fd = -1
|
|
self.state = -1
|
|
self.started = False
|
|
try:
|
|
self._serv.close()
|
|
except Exception:
|
|
pass
|
|
|
|
def accept_conn(self):
|
|
"""
|
|
Accept a new incomming connection
|
|
"""
|
|
_sock = self._serv.accept()
|
|
_sock[0].setblocking(False)
|
|
self.connections.append(_sock[0])
|
|
return _sock
|
|
|