720 lines
27 KiB
Python
720 lines
27 KiB
Python
# Copyright (C) 2006 Dimitur Kirov <dkirov AT gmail.com>
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# Junglecow J <junglecow AT gmail.com>
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# Copyright (C) 2006-2007 Tomasz Melcer <liori AT exroot.org>
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# Travis Shirk <travis AT pobox.com>
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# Nikos Kouremenos <kourem AT gmail.com>
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# Copyright (C) 2006-2014 Yann Leboulanger <asterix AT lagaule.org>
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# Copyright (C) 2007 Julien Pivotto <roidelapluie AT gmail.com>
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# Copyright (C) 2007-2008 Brendan Taylor <whateley AT gmail.com>
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# Jean-Marie Traissard <jim AT lapin.org>
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# Stephan Erb <steve-e AT h3c.de>
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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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import socket
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import logging
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import nbxmpp
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from nbxmpp.namespaces import Namespace
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from nbxmpp.structs import StanzaHandler
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from gi.repository import GLib
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from gajim.common import app
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from gajim.common import helpers
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from gajim.common import jingle_xtls
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from gajim.common.file_props import FilesProp
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from gajim.common.socks5 import Socks5SenderClient
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from gajim.common.nec import NetworkEvent
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from gajim.common.modules.base import BaseModule
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log = logging.getLogger('gajim.c.m.bytestream')
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def is_transfer_paused(file_props):
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if file_props.stopped:
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return False
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if file_props.completed:
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return False
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if file_props.disconnect_cb:
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return False
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return file_props.paused
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def is_transfer_active(file_props):
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if file_props.stopped:
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return False
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if file_props.completed:
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return False
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if not file_props.started:
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return False
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if file_props.paused:
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return True
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return not file_props.paused
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def is_transfer_stopped(file_props):
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if not file_props:
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return True
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if file_props.error:
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return True
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if file_props.completed:
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return True
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if not file_props.stopped:
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return False
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return True
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class Bytestream(BaseModule):
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def __init__(self, con):
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BaseModule.__init__(self, con)
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self.handlers = [
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StanzaHandler(name='iq',
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typ='result',
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ns=Namespace.BYTESTREAM,
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callback=self._on_bytestream_result),
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StanzaHandler(name='iq',
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typ='error',
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ns=Namespace.BYTESTREAM,
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callback=self._on_bytestream_error),
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StanzaHandler(name='iq',
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typ='set',
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ns=Namespace.BYTESTREAM,
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callback=self._on_bytestream_set),
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StanzaHandler(name='iq',
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typ='result',
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callback=self._on_result),
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]
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self.no_gupnp_reply_id = None
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self.ok_id = None
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self.fail_id = None
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def pass_disco(self, info):
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if Namespace.BYTESTREAM not in info.features:
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return
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if app.settings.get_account_setting(self._account, 'use_ft_proxies'):
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log.info('Discovered proxy: %s', info.jid)
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our_fjid = self._con.get_own_jid()
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testit = app.settings.get_account_setting(
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self._account, 'test_ft_proxies_on_startup')
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app.proxy65_manager.resolve(
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info.jid, self._con.connection, str(our_fjid),
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default=self._account, testit=testit)
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raise nbxmpp.NodeProcessed
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def _ft_get_receiver_jid(self, file_props):
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if self._account == 'Local':
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return file_props.receiver.jid
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return file_props.receiver.jid + '/' + file_props.receiver.resource
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def _ft_get_from(self, iq_obj):
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if self._account == 'Local':
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return iq_obj.getFrom()
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return helpers.get_full_jid_from_iq(iq_obj)
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def _ft_get_streamhost_jid_attr(self, streamhost):
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if self._account == 'Local':
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return streamhost.getAttr('jid')
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return helpers.parse_jid(streamhost.getAttr('jid'))
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def send_file_approval(self, file_props):
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"""
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Send iq, confirming that we want to download the file
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"""
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# user response to ConfirmationDialog may come after we've disconnected
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if not app.account_is_available(self._account):
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return
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# file transfer initiated by a jingle session
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log.info("send_file_approval: jingle session accept")
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session = self._con.get_module('Jingle').get_jingle_session(
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file_props.sender, file_props.sid)
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if not session:
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return
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content = None
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for content_ in session.contents.values():
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if content_.transport.sid == file_props.transport_sid:
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content = content_
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break
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if not content:
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return
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if not session.accepted:
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content = session.get_content('file', content.name)
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if content.use_security:
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fingerprint = content.x509_fingerprint
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if not jingle_xtls.check_cert(
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app.get_jid_without_resource(file_props.sender),
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fingerprint):
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id_ = jingle_xtls.send_cert_request(
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self._con, file_props.sender)
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jingle_xtls.key_exchange_pend(id_,
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content.on_cert_received, [])
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return
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session.approve_session()
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session.approve_content('file', content.name)
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def send_file_rejection(self, file_props):
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"""
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Inform sender that we refuse to download the file
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typ is used when code = '400', in this case typ can be 'stream' for
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invalid stream or 'profile' for invalid profile
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"""
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# user response to ConfirmationDialog may come after we've disconnected
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if not app.account_is_available(self._account):
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return
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for session in self._con.get_module('Jingle').get_jingle_sessions(
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None, file_props.sid):
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session.cancel_session()
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def send_success_connect_reply(self, streamhost):
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"""
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Send reply to the initiator of FT that we made a connection
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"""
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if not app.account_is_available(self._account):
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return
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if streamhost is None:
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return
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iq = nbxmpp.Iq(to=streamhost['initiator'],
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typ='result',
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frm=streamhost['target'])
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iq.setAttr('id', streamhost['id'])
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query = iq.setTag('query', namespace=Namespace.BYTESTREAM)
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stream_tag = query.setTag('streamhost-used')
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stream_tag.setAttr('jid', streamhost['jid'])
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self._con.connection.send(iq)
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def stop_all_active_file_transfers(self, contact):
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"""
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Stop all active transfer to or from the given contact
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"""
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for file_props in FilesProp.getAllFileProp():
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if is_transfer_stopped(file_props):
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continue
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receiver_jid = file_props.receiver
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if contact.get_full_jid() == receiver_jid:
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file_props.error = -5
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self.remove_transfer(file_props)
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app.nec.push_incoming_event(
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NetworkEvent('file-request-error',
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conn=self._con,
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jid=app.get_jid_without_resource(contact.jid),
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file_props=file_props,
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error_msg=''))
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sender_jid = file_props.sender
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if contact.get_full_jid() == sender_jid:
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file_props.error = -3
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self.remove_transfer(file_props)
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def remove_all_transfers(self):
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"""
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Stop and remove all active connections from the socks5 pool
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"""
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for file_props in FilesProp.getAllFileProp():
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self.remove_transfer(file_props)
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def remove_transfer(self, file_props):
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if file_props is None:
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return
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self.disconnect_transfer(file_props)
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@staticmethod
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def disconnect_transfer(file_props):
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if file_props is None:
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return
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if file_props.hash_:
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app.socks5queue.remove_sender(file_props.hash_)
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if file_props.streamhosts:
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for host in file_props.streamhosts:
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if 'idx' in host and host['idx'] > 0:
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app.socks5queue.remove_receiver(host['idx'])
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app.socks5queue.remove_sender(host['idx'])
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def _send_socks5_info(self, file_props):
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"""
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Send iq for the present streamhosts and proxies
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"""
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if not app.account_is_available(self._account):
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return
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receiver = file_props.receiver
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sender = file_props.sender
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sha_str = helpers.get_auth_sha(file_props.sid, sender, receiver)
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file_props.sha_str = sha_str
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port = app.settings.get('file_transfers_port')
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listener = app.socks5queue.start_listener(
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port,
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sha_str,
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self._result_socks5_sid, file_props)
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if not listener:
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file_props.error = -5
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app.nec.push_incoming_event(
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NetworkEvent('file-request-error',
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conn=self._con,
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jid=app.get_jid_without_resource(receiver),
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file_props=file_props,
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error_msg=''))
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self._connect_error(file_props.sid,
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error='not-acceptable',
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error_type='modify')
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else:
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iq = nbxmpp.Iq(to=receiver, typ='set')
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file_props.request_id = 'id_' + file_props.sid
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iq.setID(file_props.request_id)
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query = iq.setTag('query', namespace=Namespace.BYTESTREAM)
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query.setAttr('sid', file_props.sid)
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self._add_addiditional_streamhosts_to_query(query, file_props)
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self._add_local_ips_as_streamhosts_to_query(query, file_props)
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self._add_proxy_streamhosts_to_query(query, file_props)
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self._add_upnp_igd_as_streamhost_to_query(query, file_props, iq)
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# Upnp-igd is asynchronous, so it will send the iq itself
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@staticmethod
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def _add_streamhosts_to_query(query, sender, port, hosts):
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for host in hosts:
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streamhost = nbxmpp.Node(tag='streamhost')
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query.addChild(node=streamhost)
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streamhost.setAttr('port', str(port))
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streamhost.setAttr('host', host)
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streamhost.setAttr('jid', sender)
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def _add_local_ips_as_streamhosts_to_query(self, query, file_props):
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if not app.settings.get_account_setting(self._account,
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'ft_send_local_ips'):
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return
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my_ip = self._con.local_address
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if my_ip is None:
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log.warning('No local address available')
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return
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try:
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# The ip we're connected to server with
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my_ips = [my_ip]
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# all IPs from local DNS
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for addr in socket.getaddrinfo(socket.gethostname(), None):
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if (not addr[4][0] in my_ips and
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not addr[4][0].startswith('127') and
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not addr[4][0] == '::1'):
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my_ips.append(addr[4][0])
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sender = file_props.sender
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port = app.settings.get('file_transfers_port')
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self._add_streamhosts_to_query(query, sender, port, my_ips)
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except socket.gaierror:
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from gajim.common.connection_handlers_events import InformationEvent
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app.nec.push_incoming_event(
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InformationEvent(None, dialog_name='wrong-host'))
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def _add_addiditional_streamhosts_to_query(self, query, file_props):
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sender = file_props.sender
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port = app.settings.get('file_transfers_port')
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ft_add_hosts_to_send = app.settings.get('ft_add_hosts_to_send')
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add_hosts = []
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if ft_add_hosts_to_send:
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add_hosts = [e.strip() for e in ft_add_hosts_to_send.split(',')]
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else:
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add_hosts = []
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self._add_streamhosts_to_query(query, sender, port, add_hosts)
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def _add_upnp_igd_as_streamhost_to_query(self, query, file_props, iq):
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my_ip = self._con.local_address
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if my_ip is None or not app.is_installed('UPNP'):
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log.warning('No local address available')
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self._con.connection.send(iq)
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return
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# check if we are connected with an IPv4 address
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try:
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socket.inet_aton(my_ip)
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except socket.error:
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self._con.connection.send(iq)
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return
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def ip_is_local(ip):
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if '.' not in ip:
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# it's an IPv6
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return True
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ip_s = ip.split('.')
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ip_l = int(ip_s[0])<<24 | int(ip_s[1])<<16 | int(ip_s[2])<<8 | \
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int(ip_s[3])
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# 10/8
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if ip_l & (255<<24) == 10<<24:
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return True
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# 172.16/12
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if ip_l & (255<<24 | 240<<16) == (172<<24 | 16<<16):
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return True
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# 192.168
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if ip_l & (255<<24 | 255<<16) == (192<<24 | 168<<16):
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return True
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return False
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if not ip_is_local(my_ip):
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self.connection.send(iq)
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return
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self.no_gupnp_reply_id = 0
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def cleanup_gupnp():
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if self.no_gupnp_reply_id:
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GLib.source_remove(self.no_gupnp_reply_id)
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self.no_gupnp_reply_id = 0
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app.gupnp_igd.disconnect(self.ok_id)
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app.gupnp_igd.disconnect(self.fail_id)
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def success(_gupnp, _proto, ext_ip, _re, ext_port,
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local_ip, local_port, _desc):
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log.debug('Got GUPnP-IGD answer: external: %s:%s, internal: %s:%s',
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ext_ip, ext_port, local_ip, local_port)
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if local_port != app.settings.get('file_transfers_port'):
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sender = file_props.sender
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receiver = file_props.receiver
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sha_str = helpers.get_auth_sha(file_props.sid,
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sender,
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receiver)
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listener = app.socks5queue.start_listener(
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local_port,
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sha_str,
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self._result_socks5_sid,
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file_props.sid)
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if listener:
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self._add_streamhosts_to_query(query,
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sender,
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ext_port,
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[ext_ip])
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else:
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self._add_streamhosts_to_query(query,
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file_props.sender,
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ext_port,
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[ext_ip])
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self._con.connection.send(iq)
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cleanup_gupnp()
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def fail(_gupnp, error, _proto, _ext_ip, _local_ip, _local_port, _desc):
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log.debug('Got GUPnP-IGD error: %s', error)
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self._con.connection.send(iq)
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cleanup_gupnp()
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def no_upnp_reply():
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log.debug('Got not GUPnP-IGD answer')
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# stop trying to use it
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app.disable_dependency('UPNP')
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self.no_gupnp_reply_id = 0
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self._con.connection.send(iq)
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cleanup_gupnp()
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return False
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self.ok_id = app.gupnp_igd.connect('mapped-external-port', success)
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self.fail_id = app.gupnp_igd.connect('error-mapping-port', fail)
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port = app.settings.get('file_transfers_port')
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self.no_gupnp_reply_id = GLib.timeout_add_seconds(10, no_upnp_reply)
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app.gupnp_igd.add_port('TCP',
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0,
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my_ip,
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port,
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3600,
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'Gajim file transfer')
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def _add_proxy_streamhosts_to_query(self, query, file_props):
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proxyhosts = self._get_file_transfer_proxies_from_config(file_props)
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if proxyhosts:
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file_props.proxy_receiver = file_props.receiver
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file_props.proxy_sender = file_props.sender
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file_props.proxyhosts = proxyhosts
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for proxyhost in proxyhosts:
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self._add_streamhosts_to_query(query,
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proxyhost['jid'],
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proxyhost['port'],
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[proxyhost['host']])
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def _get_file_transfer_proxies_from_config(self, file_props):
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configured_proxies = app.settings.get_account_setting(
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self._account, 'file_transfer_proxies')
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shall_use_proxies = app.settings.get_account_setting(
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self._account, 'use_ft_proxies')
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if shall_use_proxies:
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proxyhost_dicts = []
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proxies = []
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if configured_proxies:
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proxies = [item.strip() for item in
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configured_proxies.split(',')]
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default_proxy = app.proxy65_manager.get_default_for_name(
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self._account)
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if default_proxy:
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# add/move default proxy at top of the others
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if default_proxy in proxies:
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proxies.remove(default_proxy)
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proxies.insert(0, default_proxy)
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for proxy in proxies:
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(host, _port, jid) = app.proxy65_manager.get_proxy(
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proxy, self._account)
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if not host:
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continue
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host_dict = {
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'state': 0,
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'target': file_props.receiver,
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'id': file_props.sid,
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'sid': file_props.sid,
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'initiator': proxy,
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'host': host,
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'port': str(_port),
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'jid': jid
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}
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proxyhost_dicts.append(host_dict)
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return proxyhost_dicts
|
|
|
|
return []
|
|
|
|
@staticmethod
|
|
def _result_socks5_sid(sid, hash_id):
|
|
"""
|
|
Store the result of SHA message from auth
|
|
"""
|
|
file_props = FilesProp.getFilePropBySid(sid)
|
|
file_props.hash_ = hash_id
|
|
|
|
def _connect_error(self, sid, error, error_type, msg=None):
|
|
"""
|
|
Called when there is an error establishing BS connection, or when
|
|
connection is rejected
|
|
"""
|
|
if not app.account_is_available(self._account):
|
|
return
|
|
file_props = FilesProp.getFileProp(self._account, sid)
|
|
if file_props is None:
|
|
log.error('can not send iq error on failed transfer')
|
|
return
|
|
if file_props.type_ == 's':
|
|
to = file_props.receiver
|
|
else:
|
|
to = file_props.sender
|
|
iq = nbxmpp.Iq(to=to, typ='error')
|
|
iq.setAttr('id', file_props.request_id)
|
|
err = iq.setTag('error')
|
|
err.setAttr('type', error_type)
|
|
err.setTag(error, namespace=Namespace.STANZAS)
|
|
self._con.connection.send(iq)
|
|
if msg:
|
|
self.disconnect_transfer(file_props)
|
|
file_props.error = -3
|
|
app.nec.push_incoming_event(
|
|
NetworkEvent('file-request-error',
|
|
conn=self._con,
|
|
jid=app.get_jid_without_resource(to),
|
|
file_props=file_props,
|
|
error_msg=msg))
|
|
|
|
def _proxy_auth_ok(self, proxy):
|
|
"""
|
|
Called after authentication to proxy server
|
|
"""
|
|
if not app.account_is_available(self._account):
|
|
return
|
|
file_props = FilesProp.getFileProp(self._account, proxy['sid'])
|
|
iq = nbxmpp.Iq(to=proxy['initiator'], typ='set')
|
|
auth_id = "au_" + proxy['sid']
|
|
iq.setID(auth_id)
|
|
query = iq.setTag('query', namespace=Namespace.BYTESTREAM)
|
|
query.setAttr('sid', proxy['sid'])
|
|
activate = query.setTag('activate')
|
|
activate.setData(file_props.proxy_receiver)
|
|
iq.setID(auth_id)
|
|
self._con.connection.send(iq)
|
|
|
|
def _on_bytestream_error(self, _con, iq_obj, _properties):
|
|
id_ = iq_obj.getAttr('id')
|
|
frm = helpers.get_full_jid_from_iq(iq_obj)
|
|
query = iq_obj.getTag('query')
|
|
app.proxy65_manager.error_cb(frm, query)
|
|
jid = helpers.get_jid_from_iq(iq_obj)
|
|
id_ = id_[3:]
|
|
file_props = FilesProp.getFilePropBySid(id_)
|
|
if not file_props:
|
|
return
|
|
file_props.error = -4
|
|
app.nec.push_incoming_event(
|
|
NetworkEvent('file-request-error',
|
|
conn=self._con,
|
|
jid=app.get_jid_without_resource(jid),
|
|
file_props=file_props,
|
|
error_msg=''))
|
|
raise nbxmpp.NodeProcessed
|
|
|
|
def _on_bytestream_set(self, con, iq_obj, _properties):
|
|
target = iq_obj.getAttr('to')
|
|
id_ = iq_obj.getAttr('id')
|
|
query = iq_obj.getTag('query')
|
|
sid = query.getAttr('sid')
|
|
file_props = FilesProp.getFileProp(self._account, sid)
|
|
streamhosts = []
|
|
for item in query.getChildren():
|
|
if item.getName() == 'streamhost':
|
|
host_dict = {
|
|
'state': 0,
|
|
'target': target,
|
|
'id': id_,
|
|
'sid': sid,
|
|
'initiator': self._ft_get_from(iq_obj)
|
|
}
|
|
for attr in item.getAttrs():
|
|
host_dict[attr] = item.getAttr(attr)
|
|
if 'host' not in host_dict:
|
|
continue
|
|
if 'jid' not in host_dict:
|
|
continue
|
|
if 'port' not in host_dict:
|
|
continue
|
|
streamhosts.append(host_dict)
|
|
file_props = FilesProp.getFilePropBySid(sid)
|
|
if file_props is not None:
|
|
if file_props.type_ == 's': # FIXME: remove fast xmlns
|
|
# only psi do this
|
|
if file_props.streamhosts:
|
|
file_props.streamhosts.extend(streamhosts)
|
|
else:
|
|
file_props.streamhosts = streamhosts
|
|
app.socks5queue.connect_to_hosts(
|
|
self._account,
|
|
sid,
|
|
self.send_success_connect_reply,
|
|
None)
|
|
raise nbxmpp.NodeProcessed
|
|
else:
|
|
log.warning('Gajim got streamhosts for unknown transfer. '
|
|
'Ignoring it.')
|
|
raise nbxmpp.NodeProcessed
|
|
|
|
file_props.streamhosts = streamhosts
|
|
def _connection_error(sid):
|
|
self._connect_error(sid,
|
|
'item-not-found',
|
|
'cancel',
|
|
msg='Could not connect to given hosts')
|
|
if file_props.type_ == 'r':
|
|
app.socks5queue.connect_to_hosts(
|
|
self._account,
|
|
sid,
|
|
self.send_success_connect_reply,
|
|
_connection_error)
|
|
raise nbxmpp.NodeProcessed
|
|
|
|
def _on_result(self, _con, iq_obj, _properties):
|
|
# if we want to respect xep-0065 we have to check for proxy
|
|
# activation result in any result iq
|
|
real_id = iq_obj.getAttr('id')
|
|
if real_id is None:
|
|
log.warning('Invalid IQ without id attribute:\n%s', iq_obj)
|
|
raise nbxmpp.NodeProcessed
|
|
if real_id is None or not real_id.startswith('au_'):
|
|
return
|
|
frm = self._ft_get_from(iq_obj)
|
|
id_ = real_id[3:]
|
|
file_props = FilesProp.getFilePropByTransportSid(self._account, id_)
|
|
if file_props.streamhost_used:
|
|
for host in file_props.proxyhosts:
|
|
if host['initiator'] == frm and 'idx' in host:
|
|
app.socks5queue.activate_proxy(host['idx'])
|
|
raise nbxmpp.NodeProcessed
|
|
|
|
def _on_bytestream_result(self, con, iq_obj, _properties):
|
|
frm = self._ft_get_from(iq_obj)
|
|
real_id = iq_obj.getAttr('id')
|
|
query = iq_obj.getTag('query')
|
|
app.proxy65_manager.resolve_result(frm, query)
|
|
|
|
try:
|
|
streamhost = query.getTag('streamhost-used')
|
|
except Exception: # this bytestream result is not what we need
|
|
pass
|
|
id_ = real_id[3:]
|
|
file_props = FilesProp.getFileProp(self._account, id_)
|
|
if file_props is None:
|
|
raise nbxmpp.NodeProcessed
|
|
if streamhost is None:
|
|
# proxy approves the activate query
|
|
if real_id.startswith('au_'):
|
|
if file_props.streamhost_used is False:
|
|
raise nbxmpp.NodeProcessed
|
|
if not file_props.proxyhosts:
|
|
raise nbxmpp.NodeProcessed
|
|
for host in file_props.proxyhosts:
|
|
if host['initiator'] == frm and \
|
|
query.getAttr('sid') == file_props.sid:
|
|
app.socks5queue.activate_proxy(host['idx'])
|
|
break
|
|
raise nbxmpp.NodeProcessed
|
|
jid = self._ft_get_streamhost_jid_attr(streamhost)
|
|
if file_props.streamhost_used is True:
|
|
raise nbxmpp.NodeProcessed
|
|
|
|
if real_id.startswith('au_'):
|
|
if file_props.stopped:
|
|
self.remove_transfer(file_props)
|
|
else:
|
|
app.socks5queue.send_file(file_props, self._account, 'server')
|
|
raise nbxmpp.NodeProcessed
|
|
|
|
proxy = None
|
|
if file_props.proxyhosts:
|
|
for proxyhost in file_props.proxyhosts:
|
|
if proxyhost['jid'] == jid:
|
|
proxy = proxyhost
|
|
|
|
if file_props.stopped:
|
|
self.remove_transfer(file_props)
|
|
raise nbxmpp.NodeProcessed
|
|
if proxy is not None:
|
|
file_props.streamhost_used = True
|
|
file_props.streamhosts.append(proxy)
|
|
file_props.is_a_proxy = True
|
|
idx = app.socks5queue.idx
|
|
sender = Socks5SenderClient(app.idlequeue,
|
|
idx,
|
|
app.socks5queue,
|
|
_sock=None,
|
|
host=str(proxy['host']),
|
|
port=int(proxy['port']),
|
|
fingerprint=None,
|
|
connected=False,
|
|
file_props=file_props)
|
|
sender.streamhost = proxy
|
|
app.socks5queue.add_sockobj(self._account, sender)
|
|
proxy['idx'] = sender.queue_idx
|
|
app.socks5queue.on_success[file_props.sid] = self._proxy_auth_ok
|
|
raise nbxmpp.NodeProcessed
|
|
|
|
if file_props.stopped:
|
|
self.remove_transfer(file_props)
|
|
else:
|
|
app.socks5queue.send_file(file_props, self._account, 'server')
|
|
|
|
raise nbxmpp.NodeProcessed
|
|
|
|
|
|
def get_instance(*args, **kwargs):
|
|
return Bytestream(*args, **kwargs), 'Bytestream'
|