# -*- coding:utf-8 -*-
## src/common/connection_handlers.py
##
## Copyright (C) 2006 Dimitur Kirov <dkirov AT gmail.com>
## Junglecow J <junglecow AT gmail.com>
## Copyright (C) 2006-2007 Tomasz Melcer <liori AT exroot.org>
## Travis Shirk <travis AT pobox.com>
## Nikos Kouremenos <kourem AT gmail.com>
## Copyright (C) 2006-2014 Yann Leboulanger <asterix AT lagaule.org>
## Copyright (C) 2007 Julien Pivotto <roidelapluie AT gmail.com>
## Copyright (C) 2007-2008 Brendan Taylor <whateley AT gmail.com>
## Jean-Marie Traissard <jim AT lapin.org>
## Stephan Erb <steve-e AT h3c.de>
## Copyright (C) 2008 Jonathan Schleifer <js-gajim AT webkeks.org>
##
## This file is part of Gajim.
##
## Gajim is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published
## by the Free Software Foundation; version 3 only.
##
## Gajim is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Gajim. If not, see <http://www.gnu.org/licenses/>.
##
import socket
import base64
from gi.repository import GLib
import time
import nbxmpp
from gajim.common import app
from gajim.common import helpers
from gajim.common import ged
from gajim.common import jingle_xtls
from gajim.common.file_props import FilesProp
from gajim.common.socks5 import Socks5SenderClient
import logging
log = logging.getLogger('gajim.c.p.bytestream')
def is_transfer_paused(file_props):
if file_props.stopped:
return False
if file_props.completed:
return False
if file_props.disconnect_cb:
return False
return file_props.paused
def is_transfer_active(file_props):
if file_props.stopped:
return False
if file_props.completed:
return False
if not file_props.started:
return False
if file_props.paused:
return True
return not file_props.paused
def is_transfer_stopped(file_props):
if not file_props:
return True
if file_props.error:
return True
if file_props.completed:
return True
if not file_props.stopped:
return False
return True
class ConnectionBytestream:
def __init__(self):
app.ged.register_event_handler('file-request-received', ged.GUI1,
self._nec_file_request_received)
def cleanup(self):
app.ged.remove_event_handler('file-request-received', ged.GUI1,
self._nec_file_request_received)
def _ft_get_our_jid(self):
our_jid = app.get_jid_from_account(self.name)
resource = self.server_resource
return our_jid + '/' + resource
def _ft_get_receiver_jid(self, file_props):
return file_props.receiver.jid + '/' + file_props.receiver.resource
def _ft_get_from(self, iq_obj):
return helpers.get_full_jid_from_iq(iq_obj)
def _ft_get_streamhost_jid_attr(self, streamhost):
return helpers.parse_jid(streamhost.getAttr('jid'))
def send_file_request(self, file_props):
"""
Send iq for new FT request
"""
if not self.connection or self.connected < 2:
return
file_props.sender = self._ft_get_our_jid()
fjid = self._ft_get_receiver_jid(file_props)
iq = nbxmpp.Iq(to=fjid, typ='set')
iq.setID(file_props.sid)
si = iq.setTag('si', namespace=nbxmpp.NS_SI)
si.setAttr('profile', nbxmpp.NS_FILE)
si.setAttr('id', file_props.sid)
file_tag = si.setTag('file', namespace=nbxmpp.NS_FILE)
file_tag.setAttr('name', file_props.name)
file_tag.setAttr('size', file_props.size)
desc = file_tag.setTag('desc')
if file_props.desc:
desc.setData(file_props.desc)
file_tag.setTag('range')
feature = si.setTag('feature', namespace=nbxmpp.NS_FEATURE)
_feature = nbxmpp.DataForm(typ='form')
feature.addChild(node=_feature)
field = _feature.setField('stream-method')
field.setAttr('type', 'list-single')
field.addOption(nbxmpp.NS_BYTESTREAM)
field.addOption(nbxmpp.NS_IBB)
self.connection.send(iq)
def send_file_approval(self, file_props):
"""
Send iq, confirming that we want to download the file
"""
# user response to ConfirmationDialog may come after we've disconneted
if not self.connection or self.connected < 2:
return
# file transfer initiated by a jingle session
log.info("send_file_approval: jingle session accept")
if file_props.session_type == 'jingle':
session = self.get_jingle_session(file_props.sender,
file_props.sid)
if not session:
return
content = None
for c in session.contents.values():
if c.transport.sid == file_props.transport_sid:
content = c
break
if not content:
return
if not session.accepted:
content = session.get_content('file', content.name)
if content.use_security:
fingerprint = content.x509_fingerprint
if not jingle_xtls.check_cert(
app.get_jid_without_resource(file_props.sender),
fingerprint):
id_ = jingle_xtls.send_cert_request(self,
file_props.sender)
jingle_xtls.key_exchange_pend(id_,
content.on_cert_received, [])
return
session.approve_session()
session.approve_content('file', content.name)
return
iq = nbxmpp.Iq(to=file_props.sender, typ='result')
iq.setAttr('id', file_props.request_id)
si = iq.setTag('si', namespace=nbxmpp.NS_SI)
if file_props.offset:
file_tag = si.setTag('file', namespace=nbxmpp.NS_FILE)
range_tag = file_tag.setTag('range')
range_tag.setAttr('offset', file_props.offset)
feature = si.setTag('feature', namespace=nbxmpp.NS_FEATURE)
_feature = nbxmpp.DataForm(typ='submit')
feature.addChild(node=_feature)
field = _feature.setField('stream-method')
field.delAttr('type')
if nbxmpp.NS_BYTESTREAM in file_props.stream_methods:
field.setValue(nbxmpp.NS_BYTESTREAM)
else:
file_props.transport_sid = file_props.sid
field.setValue(nbxmpp.NS_IBB)
self.connection.send(iq)
def send_file_rejection(self, file_props, code='403', typ=None):
"""
Inform sender that we refuse to download the file
typ is used when code = '400', in this case typ can be 'strean' for
invalid stream or 'profile' for invalid profile
"""
# user response to ConfirmationDialog may come after we've disconneted
if not self.connection or self.connected < 2:
return
if file_props.session_type == 'jingle':
if file_props.sid in self._sessions:
jingle = self._sessions[file_props.sid]
jingle.cancel_session()
return
iq = nbxmpp.Iq(to=file_props.sender, typ='error')
iq.setAttr('id', file_props.request_id)
if code == '400' and typ in ('stream', 'profile'):
name = 'bad-request'
text = ''
else:
name = 'forbidden'
text = 'Offer Declined'
err = nbxmpp.ErrorNode(code=code, typ='cancel', name=name, text=text)
if code == '400' and typ in ('stream', 'profile'):
if typ == 'stream':
err.setTag('no-valid-streams', namespace=nbxmpp.NS_SI)
else:
err.setTag('bad-profile', namespace=nbxmpp.NS_SI)
iq.addChild(node=err)
self.connection.send(iq)
def _siResultCB(self, con, iq_obj):
file_props = FilesProp.getFileProp(self.name, iq_obj.getAttr('id'))
if not file_props:
return
if file_props.request_id:
# we have already sent streamhosts info
return
file_props.receiver = self._ft_get_from(iq_obj)
si = iq_obj.getTag('si')
file_tag = si.getTag('file')
range_tag = None
if file_tag:
range_tag = file_tag.getTag('range')
if range_tag:
offset = range_tag.getAttr('offset')
if offset:
file_props.offset = int(offset)
length = range_tag.getAttr('length')
if length:
file_props.length = int(length)
feature = si.setTag('feature')
if feature.getNamespace() != nbxmpp.NS_FEATURE:
return
form_tag = feature.getTag('x')
form = nbxmpp.DataForm(node=form_tag)
field = form.getField('stream-method')
if field.getValue() == nbxmpp.NS_BYTESTREAM:
self._send_socks5_info(file_props)
raise nbxmpp.NodeProcessed
if field.getValue() == nbxmpp.NS_IBB:
sid = file_props.sid
file_props.transport_sid = sid
fp = open(file_props.file_name, 'rb')
self.OpenStream(sid, file_props.receiver, fp)
raise nbxmpp.NodeProcessed
def _siSetCB(self, con, iq_obj):
from gajim.common.connection_handlers_events import FileRequestReceivedEvent
app.nec.push_incoming_event(FileRequestReceivedEvent(None, conn=self,
stanza=iq_obj))
raise nbxmpp.NodeProcessed
def _nec_file_request_received(self, obj):
pass
def _siErrorCB(self, con, iq_obj):
si = iq_obj.getTag('si')
profile = si.getAttr('profile')
if profile != nbxmpp.NS_FILE:
return
file_props = FilesProp.getFileProp(self.name, iq_obj.getAttr('id'))
if not file_props:
return
jid = self._ft_get_from(iq_obj)
file_props.error = -3
from gajim.common.connection_handlers_events import FileRequestErrorEvent
app.nec.push_incoming_event(FileRequestErrorEvent(None, conn=self,
jid=jid, file_props=file_props, error_msg=''))
raise nbxmpp.NodeProcessed
class ConnectionSocks5Bytestream(ConnectionBytestream):
def send_success_connect_reply(self, streamhost):
"""
Send reply to the initiator of FT that we made a connection
"""
if not self.connection or self.connected < 2:
return
if streamhost is None:
return None
iq = nbxmpp.Iq(to=streamhost['initiator'], typ='result',
frm=streamhost['target'])
iq.setAttr('id', streamhost['id'])
query = iq.setTag('query', namespace=nbxmpp.NS_BYTESTREAM)
stream_tag = query.setTag('streamhost-used')
stream_tag.setAttr('jid', streamhost['jid'])
self.connection.send(iq)
def stop_all_active_file_transfers(self, contact):
"""
Stop all active transfer to or from the given contact
"""
for file_props in FilesProp.getAllFileProp():
if is_transfer_stopped(file_props):
continue
receiver_jid = file_props.receiver
if contact.get_full_jid() == receiver_jid:
file_props.error = -5
self.remove_transfer(file_props)
from gajim.common.connection_handlers_events import \
FileRequestErrorEvent
app.nec.push_incoming_event(FileRequestErrorEvent(None,
conn=self, jid=contact.jid, file_props=file_props,
error_msg=''))
sender_jid = file_props.sender
if contact.get_full_jid() == sender_jid:
file_props.error = -3
self.remove_transfer(file_props)
def remove_all_transfers(self):
"""
Stop and remove all active connections from the socks5 pool
"""
for file_props in FilesProp.getAllFileProp():
self.remove_transfer(file_props, remove_from_list=False)
def remove_transfer(self, file_props, remove_from_list=True):
if file_props is None:
return
self.disconnect_transfer(file_props)
sid = file_props.sid
def disconnect_transfer(self, file_props):
if file_props is None:
return
if file_props.hash_:
app.socks5queue.remove_sender(file_props.hash_)
if file_props.streamhosts:
for host in file_props.streamhosts:
if 'idx' in host and host['idx'] > 0:
app.socks5queue.remove_receiver(host['idx'])
app.socks5queue.remove_sender(host['idx'])
def _send_socks5_info(self, file_props):
"""
Send iq for the present streamhosts and proxies
"""
if not self.connection or self.connected < 2:
return
receiver = file_props.receiver
sender = file_props.sender
sha_str = helpers.get_auth_sha(file_props.sid, sender, receiver)
file_props.sha_str = sha_str
port = app.config.get('file_transfers_port')
listener = app.socks5queue.start_listener(port, sha_str,
self._result_socks5_sid, file_props)
if not listener:
file_props.error = -5
from gajim.common.connection_handlers_events import FileRequestErrorEvent
app.nec.push_incoming_event(FileRequestErrorEvent(None, conn=self,
jid=receiver, file_props=file_props, error_msg=''))
self._connect_error(file_props.sid, error='not-acceptable',
error_type='modify')
else:
iq = nbxmpp.Iq(to=receiver, typ='set')
file_props.request_id = 'id_' + file_props.sid
iq.setID(file_props.request_id)
query = iq.setTag('query', namespace=nbxmpp.NS_BYTESTREAM)
query.setAttr('sid', file_props.sid)
self._add_addiditional_streamhosts_to_query(query, file_props)
self._add_local_ips_as_streamhosts_to_query(query, file_props)
self._add_proxy_streamhosts_to_query(query, file_props)
self._add_upnp_igd_as_streamhost_to_query(query, file_props, iq)
# Upnp-igd is ascynchronous, so it will send the iq itself
def _add_streamhosts_to_query(self, query, sender, port, hosts):
for host in hosts:
streamhost = nbxmpp.Node(tag='streamhost')
query.addChild(node=streamhost)
streamhost.setAttr('port', str(port))
streamhost.setAttr('host', host)
streamhost.setAttr('jid', sender)
def _add_local_ips_as_streamhosts_to_query(self, query, file_props):
if not app.config.get_per('accounts', self.name, 'ft_send_local_ips'):
return
try:
my_ips = [self.peerhost[0]] # The ip we're connected to server with
# all IPs from local DNS
for addr in socket.getaddrinfo(socket.gethostname(), None):
if not addr[4][0] in my_ips and not addr[4][0].startswith('127') and not addr[4][0] == '::1':
my_ips.append(addr[4][0])
sender = file_props.sender
port = app.config.get('file_transfers_port')
self._add_streamhosts_to_query(query, sender, port, my_ips)
except socket.gaierror:
from gajim.common.connection_handlers_events import InformationEvent
app.nec.push_incoming_event(
InformationEvent(None, dialog_name='wrong-host')),
def _add_addiditional_streamhosts_to_query(self, query, file_props):
sender = file_props.sender
port = app.config.get('file_transfers_port')
ft_add_hosts_to_send = app.config.get('ft_add_hosts_to_send')
additional_hosts = []
if ft_add_hosts_to_send:
additional_hosts = [e.strip() for e in ft_add_hosts_to_send.split(',')]
else:
additional_hosts = []
self._add_streamhosts_to_query(query, sender, port, additional_hosts)
def _add_upnp_igd_as_streamhost_to_query(self, query, file_props, iq):
if not app.HAVE_UPNP_IGD:
self.connection.send(iq)
return
my_ip = self.peerhost[0]
# check if we are connected with an IPv4 address
try:
socket.inet_aton(my_ip)
except socket.error as e:
self.connection.send(iq)
return
def ip_is_local(ip):
if '.' not in ip:
# it's an IPv6
return True
ip_s = ip.split('.')
ip_l = int(ip_s[0])<<24 | int(ip_s[1])<<16 | int(ip_s[2])<<8 | \
int(ip_s[3])
# 10/8
if ip_l & (255<<24) == 10<<24:
return True
# 172.16/12
if ip_l & (255<<24 | 240<<16) == (172<<24 | 16<<16):
return True
# 192.168
if ip_l & (255<<24 | 255<<16) == (192<<24 | 168<<16):
return True
return False
if not ip_is_local(my_ip):
self.connection.send(iq)
return
self.no_gupnp_reply_id = 0
def cleanup_gupnp():
if self.no_gupnp_reply_id:
GLib.source_remove(self.no_gupnp_reply_id)
self.no_gupnp_reply_id = 0
app.gupnp_igd.disconnect(self.ok_id)
app.gupnp_igd.disconnect(self.fail_id)
def ok(s, proto, ext_ip, re, ext_port, local_ip, local_port, desc):
log.debug('Got GUPnP-IGD answer: external: %s:%s, internal: %s:%s',
ext_ip, ext_port, local_ip, local_port)
if local_port != app.config.get('file_transfers_port'):
sender = file_props.sender
receiver = file_props.receiver
sha_str = helpers.get_auth_sha(file_props.sid, sender,
receiver)
listener = app.socks5queue.start_listener(local_port, sha_str,
self._result_socks5_sid, file_props.sid)
if listener:
self._add_streamhosts_to_query(query, sender, ext_port,
[ext_ip])
else:
self._add_streamhosts_to_query(query, file_props.sender,
ext_port, [ext_ip])
self.connection.send(iq)
cleanup_gupnp()
def fail(s, error, proto, ext_ip, local_ip, local_port, desc):
log.debug('Got GUPnP-IGD error')
self.connection.send(iq)
cleanup_gupnp()
def no_upnp_reply():
log.debug('Got not GUPnP-IGD answer')
# stop trying to use it
app.HAVE_UPNP_IGD = False
self.no_gupnp_reply_id = 0
self.connection.send(iq)
cleanup_gupnp()
return False
self.ok_id = app.gupnp_igd.connect('mapped-external-port', ok)
self.fail_id = app.gupnp_igd.connect('error-mapping-port', fail)
port = app.config.get('file_transfers_port')
self.no_gupnp_reply_id = GLib.timeout_add_seconds(10, no_upnp_reply)
app.gupnp_igd.add_port('TCP', 0, my_ip, port, 3600,
'Gajim file transfer')
def _add_proxy_streamhosts_to_query(self, query, file_props):
proxyhosts = self._get_file_transfer_proxies_from_config(file_props)
if proxyhosts:
file_props.proxy_receiver = file_props.receiver
file_props.proxy_sender = file_props.sender
file_props.proxyhosts = proxyhosts
for proxyhost in proxyhosts:
self._add_streamhosts_to_query(query, proxyhost['jid'],
proxyhost['port'], [proxyhost['host']])
def _get_file_transfer_proxies_from_config(self, file_props):
configured_proxies = app.config.get_per('accounts', self.name,
'file_transfer_proxies')
shall_use_proxies = app.config.get_per('accounts', self.name,
'use_ft_proxies')
if shall_use_proxies:
proxyhost_dicts = []
proxies = []
if configured_proxies:
proxies = [item.strip() for item in configured_proxies.split(',')]
default_proxy = app.proxy65_manager.get_default_for_name(self.name)
if default_proxy:
# add/move default proxy at top of the others
if default_proxy in proxies:
proxies.remove(default_proxy)
proxies.insert(0, default_proxy)
for proxy in proxies:
(host, _port, jid) = app.proxy65_manager.get_proxy(proxy, self.name)
if not host:
continue
host_dict = {
'state': 0,
'target': file_props.receiver,
'id': file_props.sid,
'sid': file_props.sid,
'initiator': proxy,
'host': host,
'port': str(_port),
'jid': jid
}
proxyhost_dicts.append(host_dict)
return proxyhost_dicts
else:
return []
def _result_socks5_sid(self, sid, hash_id):
"""
Store the result of SHA message from auth
"""
file_props = FilesProp.getFilePropBySid(sid)
file_props.hash_ = hash_id
return
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 self.connection or self.connected < 2:
return
file_props = FilesProp.getFileProp(self.name, 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=nbxmpp.NS_STANZAS)
self.connection.send(iq)
if msg:
self.disconnect_transfer(file_props)
file_props.error = -3
from gajim.common.connection_handlers_events import \
FileRequestErrorEvent
app.nec.push_incoming_event(FileRequestErrorEvent(None,
conn=self, jid=to, file_props=file_props, error_msg=msg))
def _proxy_auth_ok(self, proxy):
"""
Called after authentication to proxy server
"""
if not self.connection or self.connected < 2:
return
file_props = FilesProp.getFileProp(self.name, proxy['sid'])
iq = nbxmpp.Iq(to=proxy['initiator'], typ='set')
auth_id = "au_" + proxy['sid']
iq.setID(auth_id)
query = iq.setTag('query', namespace=nbxmpp.NS_BYTESTREAM)
query.setAttr('sid', proxy['sid'])
activate = query.setTag('activate')
activate.setData(file_props.proxy_receiver)
iq.setID(auth_id)
self.connection.send(iq)
# register xmpppy handlers for bytestream and FT stanzas
def _bytestreamErrorCB(self, con, iq_obj):
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
from gajim.common.connection_handlers_events import FileRequestErrorEvent
app.nec.push_incoming_event(FileRequestErrorEvent(None, conn=self,
jid=jid, file_props=file_props, error_msg=''))
raise nbxmpp.NodeProcessed
def _bytestreamSetCB(self, con, iq_obj):
target = iq_obj.getAttr('to')
id_ = iq_obj.getAttr('id')
query = iq_obj.getTag('query')
sid = query.getAttr('sid')
file_props = FilesProp.getFileProp(self.name, 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.name, 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.name, sid,
self.send_success_connect_reply, _connection_error)
raise nbxmpp.NodeProcessed
def _ResultCB(self, con, iq_obj):
# 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.name, 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 _bytestreamResultCB(self, con, iq_obj):
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.name, 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.name, '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.name, sender)
proxy['idx'] = sender.queue_idx
app.socks5queue.on_success[file_props.sid] = self._proxy_auth_ok
raise nbxmpp.NodeProcessed
else:
if file_props.stopped:
self.remove_transfer(file_props)
else:
app.socks5queue.send_file(file_props, self.name, 'server')
raise nbxmpp.NodeProcessed
class ConnectionIBBytestream(ConnectionBytestream):
def __init__(self):
ConnectionBytestream.__init__(self)
self._streams = {}
def IBBIqHandler(self, conn, stanza):
"""
Handles streams state change. Used internally.
"""
typ = stanza.getType()
log.debug('IBBIqHandler called typ->%s' % typ)
if typ == 'set' and stanza.getTag('open'):
self.StreamOpenHandler(conn, stanza)
elif typ == 'set' and stanza.getTag('close'):
self.StreamCloseHandler(conn, stanza)
elif typ == 'set' and stanza.getTag('data'):
sid = stanza.getTagAttr('data', 'sid')
file_props = FilesProp.getFilePropByTransportSid(self.name, sid)
if not file_props:
conn.send(nbxmpp.Error(stanza, nbxmpp.ERR_ITEM_NOT_FOUND))
elif file_props.connected and self.IBBMessageHandler(conn,
stanza):
reply = stanza.buildReply('result')
reply.delChild('data')
conn.send(reply)
elif not file_props.connected:
log.debug('Received IQ for closed filetransfer, IQ dropped')
elif typ == 'error':
app.socks5queue.error_cb()
else:
conn.send(nbxmpp.Error(stanza, nbxmpp.ERR_BAD_REQUEST))
raise nbxmpp.NodeProcessed
def StreamOpenHandler(self, conn, stanza):
"""
Handles opening of new incoming stream. Used internally.
"""
err = None
sid = stanza.getTagAttr('open', 'sid')
blocksize = stanza.getTagAttr('open', 'block-size')
log.debug('StreamOpenHandler called sid->%s blocksize->%s' % (sid,
blocksize))
file_props = FilesProp.getFilePropByTransportSid(self.name, sid)
try:
blocksize = int(blocksize)
except:
err = nbxmpp.ERR_BAD_REQUEST
if not sid or not blocksize:
err = nbxmpp.ERR_BAD_REQUEST
elif not file_props:
err = nbxmpp.ERR_UNEXPECTED_REQUEST
if err:
rep = nbxmpp.Error(stanza, err)
else:
log.debug("Opening stream: id %s, block-size %s" % (sid, blocksize))
rep = nbxmpp.Protocol('iq', stanza.getFrom(), 'result',
stanza.getTo(), {'id': stanza.getID()})
file_props.block_size = blocksize
file_props.direction = '<'
file_props.seq = 0
file_props.received_len = 0
file_props.last_time = time.time()
file_props.error = 0
file_props.paused = False
file_props.connected = True
file_props.completed = False
file_props.disconnect_cb = None
file_props.continue_cb = None
file_props.syn_id = stanza.getID()
file_props.fp = open(file_props.file_name, 'wb')
conn.send(rep)
def CloseIBBStream(self, file_props):
file_props.connected = False
file_props.fp.close()
file_props.stopped = True
to = file_props.receiver
if file_props.direction == '<':
to = file_props.sender
self.connection.send(
nbxmpp.Protocol('iq', to, 'set',
payload=[nbxmpp.Node(nbxmpp.NS_IBB + ' close',
{'sid':file_props.transport_sid})]))
if file_props.completed:
app.socks5queue.complete_transfer_cb(self.name, file_props)
elif file_props.session_type == 'jingle':
peerjid = \
file_props.receiver if file_props.type_ == 's' else file_props.sender
session = self.get_jingle_session(peerjid, file_props.sid, 'file')
# According to the xep, the initiator also cancels the jingle session
# if there are no more files to send using IBB
if session.weinitiate:
session.cancel_session()
def OpenStream(self, sid, to, fp, blocksize=4096):
"""
Start new stream. You should provide stream id 'sid', the endpoind jid
'to', the file object containing info for send 'fp'. Also the desired
blocksize can be specified.
Take into account that recommended stanza size is 4k and IBB uses
base64 encoding that increases size of data by 1/3.
"""
file_props = FilesProp.getFilePropBySid(sid)
file_props.direction = '>'
file_props.block_size = blocksize
file_props.fp = fp
file_props.seq = 0
file_props.error = 0
file_props.paused = False
file_props.received_len = 0
file_props.last_time = time.time()
file_props.connected = True
file_props.completed = False
file_props.disconnect_cb = None
file_props.continue_cb = None
syn = nbxmpp.Protocol('iq', to, 'set', payload=[nbxmpp.Node(
nbxmpp.NS_IBB + ' open', {'sid': file_props.transport_sid,
'block-size': blocksize, 'stanza': 'iq'})])
self.connection.send(syn)
file_props.syn_id = syn.getID()
return file_props
def SendHandler(self, file_props):
"""
Send next portion of data if it is time to do it. Used internally.
"""
log.debug('SendHandler called')
if file_props.completed:
self.CloseIBBStream(file_props)
if file_props.paused:
return
if not file_props.connected:
#TODO: Reply with out of order error
return
chunk = file_props.fp.read(file_props.block_size)
if chunk:
datanode = nbxmpp.Node(nbxmpp.NS_IBB + ' data', {
'sid': file_props.transport_sid,
'seq': file_props.seq},
base64.b64encode(chunk).decode('ascii'))
file_props.seq += 1
file_props.started = True
if file_props.seq == 65536:
file_props.seq = 0
file_props.syn_id = self.connection.send(
nbxmpp.Protocol(name='iq', to=file_props.receiver,
typ='set', payload=[datanode]))
current_time = time.time()
file_props.elapsed_time += current_time - file_props.last_time
file_props.last_time = current_time
file_props.received_len += len(chunk)
if file_props.size == file_props.received_len:
file_props.completed = True
app.socks5queue.progress_transfer_cb(self.name,
file_props)
else:
log.debug('Nothing to read, but file not completed')
def IBBMessageHandler(self, conn, stanza):
"""
Receive next portion of incoming datastream and store it write
it to temporary file. Used internally.
"""
sid = stanza.getTagAttr('data', 'sid')
seq = stanza.getTagAttr('data', 'seq')
data = stanza.getTagData('data')
log.debug('ReceiveHandler called sid->%s seq->%s' % (sid, seq))
try:
seq = int(seq)
data = base64.b64decode(data.encode('utf-8'))
except Exception:
seq = ''
data = b''
err = None
file_props = FilesProp.getFilePropByTransportSid(self.name, sid)
if file_props is None:
err = nbxmpp.ERR_ITEM_NOT_FOUND
else:
if not data:
err = nbxmpp.ERR_BAD_REQUEST
elif seq != file_props.seq:
err = nbxmpp.ERR_UNEXPECTED_REQUEST
else:
log.debug('Successfull receive sid->%s %s+%s bytes' % (sid,
file_props.fp.tell(), len(data)))
file_props.seq += 1
file_props.started = True
file_props.fp.write(data)
current_time = time.time()
file_props.elapsed_time += current_time - file_props.last_time
file_props.last_time = current_time
file_props.received_len += len(data)
app.socks5queue.progress_transfer_cb(self.name, file_props)
if file_props.received_len >= file_props.size:
file_props.completed = True
if err:
log.debug('Error on receive: %s' % err)
conn.send(nbxmpp.Error(nbxmpp.Iq(to=stanza.getFrom(),
frm=stanza.getTo(),
payload=[nbxmpp.Node(nbxmpp.NS_IBB + ' close')]), err, reply=0))
else:
return True
def StreamCloseHandler(self, conn, stanza):
"""
Handle stream closure due to all data transmitted.
Raise xmpppy event specifying successfull data receive.
"""
sid = stanza.getTagAttr('close', 'sid')
log.debug('StreamCloseHandler called sid->%s' % sid)
# look in sending files
file_props = FilesProp.getFilePropByTransportSid(self.name, sid)
if file_props:
reply = stanza.buildReply('result')
reply.delChild('close')
conn.send(reply)
# look in receiving files
file_props.fp.close()
file_props.completed = file_props.received_len >= file_props.size
if not file_props.completed:
file_props.error = -1
app.socks5queue.complete_transfer_cb(self.name, file_props)
else:
conn.send(nbxmpp.Error(stanza, nbxmpp.ERR_ITEM_NOT_FOUND))
def IBBAllIqHandler(self, conn, stanza):
"""
Handle remote side reply about if it agree or not to receive our
datastream.
Used internally. Raises xmpppy event specfiying if the data transfer
is agreed upon.
"""
syn_id = stanza.getID()
log.debug('IBBAllIqHandler called syn_id->%s' % syn_id)
for file_props in FilesProp.getAllFileProp():
if not file_props.direction or not file_props.connected:
# It's socks5 bytestream
# Or we closed the IBB stream
continue
if file_props.syn_id == syn_id:
if stanza.getType() == 'error':
if file_props.direction[0] == '<':
conn.Event('IBB', 'ERROR ON RECEIVE', file_props)
else:
conn.Event('IBB', 'ERROR ON SEND', file_props)
elif stanza.getType() == 'result':
self.SendHandler(file_props)
break
class ConnectionSocks5BytestreamZeroconf(ConnectionSocks5Bytestream):
def _ft_get_from(self, iq_obj):
return iq_obj.getFrom()
def _ft_get_our_jid(self):
return app.get_jid_from_account(self.name)
def _ft_get_receiver_jid(self, file_props):
return file_props.receiver.jid
def _ft_get_streamhost_jid_attr(self, streamhost):
return streamhost.getAttr('jid')