annotate src/plugins/plugin_xep_0260.py @ 1758:a66d34353f34

plugin XEP-0260, XEP-0065: fixed session hash handling: with XEP-0260, we need to manage 2 hashes (one with SHA1(SID + Initiator JID + Responder JID) and the other with SHA1(SID + Responder JID + Initiator JID)). This was not handled correclty, resulting in transfer failure in several cases.
author Goffi <goffi@goffi.org>
date Thu, 17 Dec 2015 22:37:59 +0100
parents abd6d6f89006
children d17772b0fe22
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 # SAT plugin for Jingle (XEP-0260)
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5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from sat.core.i18n import _
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21 from sat.core.log import getLogger
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22 log = getLogger(__name__)
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23 from sat.core import exceptions
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24 from wokkel import disco, iwokkel
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25 from zope.interface import implements
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26 from twisted.words.xish import domish
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27 from twisted.words.protocols.jabber import jid
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28 from twisted.internet import defer
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29 import uuid
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30
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31 try:
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32 from twisted.words.protocols.xmlstream import XMPPHandler
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33 except ImportError:
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34 from wokkel.subprotocols import XMPPHandler
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35
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36
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37 NS_JINGLE_S5B = 'urn:xmpp:jingle:transports:s5b:1'
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38
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39 PLUGIN_INFO = {
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40 "name": "Jingle SOCKS5 Bytestreams",
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41 "import_name": "XEP-0260",
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42 "type": "XEP",
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43 "protocols": ["XEP-0260"],
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44 "dependencies": ["XEP-0166", "XEP-0065"],
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45 "recommendations": ["XEP-0261"], # needed for fallback
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46 "main": "XEP_0260",
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47 "handler": "yes",
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48 "description": _("""Implementation of Jingle SOCKS5 Bytestreams""")
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49 }
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50
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51
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52 class ProxyError(Exception):
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53
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54 def __str__(self):
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55 return "an error happened while trying to use the proxy"
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56
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57
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58 class XEP_0260(object):
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59 # TODO: udp handling
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60
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61 def __init__(self, host):
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62 log.info(_("plugin Jingle SOCKS5 Bytestreams"))
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63 self.host = host
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64 self._j = host.plugins["XEP-0166"] # shortcut to access jingle
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65 self._s5b = host.plugins["XEP-0065"] # and socks5 bytestream
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66 try:
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67 self._jingle_ibb = host.plugins["XEP-0261"]
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68 except KeyError:
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69 self._jingle_ibb = None
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70 self._j.registerTransport(NS_JINGLE_S5B, self._j.TRANSPORT_STREAMING, self, 100)
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71
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72 def getHandler(self, profile):
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73 return XEP_0260_handler()
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74
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75 def _parseCandidates(self, transport_elt):
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76 """Parse <candidate> elements
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77
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78 @param transport_elt(domish.Element): parent <transport> element
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79 @return (list[plugin_xep_0065.Candidate): list of parsed candidates
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80 """
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81 candidates = []
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82 for candidate_elt in transport_elt.elements(NS_JINGLE_S5B, 'candidate'):
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83 try:
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84 cid = candidate_elt['cid']
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85 host = candidate_elt['host']
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86 jid_= jid.JID(candidate_elt['jid'])
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87 port = int(candidate_elt.getAttribute('port', 1080))
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88 priority = int(candidate_elt['priority'])
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89 type_ = candidate_elt.getAttribute('type', self._s5b.TYPE_DIRECT)
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90 except (KeyError, ValueError):
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91 raise exceptions.DataError()
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92 candidate = self._s5b.Candidate(host, port, type_, priority, jid_, cid)
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93 candidates.append(candidate)
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94 # self._s5b.registerCandidate(candidate)
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95 return candidates
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96
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97 def _buildCandidates(self, session, candidates, sid, session_hash, client, mode=None):
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98 """Build <transport> element with candidates
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99
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100 @param session(dict): jingle session data
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101 @param candidates(iterator[plugin_xep_0065.Candidate]): iterator of candidates to add
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102 @param sid(unicode): transport stream id
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103 @param client: %(doc_client)s
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104 @param mode(str, None): 'tcp' or 'udp', or None to have no attribute
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105 @return (domish.Element): parent <transport> element where <candidate> elements must be added
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106 """
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107 proxy = next((candidate for candidate in candidates if candidate.type == self._s5b.TYPE_PROXY), None)
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108 transport_elt = domish.Element((NS_JINGLE_S5B, "transport"))
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109 transport_elt['sid'] = sid
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110 if proxy is not None:
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111 transport_elt['dstaddr'] = session_hash
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112 if mode is not None:
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113 transport_elt['mode'] = 'tcp' # XXX: we only manage tcp for now
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114
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115 for candidate in candidates:
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116 log.debug(u"Adding candidate: {}".format(candidate))
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117 candidate_elt = transport_elt.addElement('candidate', NS_JINGLE_S5B)
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118 if candidate.id is None:
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119 candidate.id = unicode(uuid.uuid4())
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120 candidate_elt['cid'] = candidate.id
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121 candidate_elt['host'] = candidate.host
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122 candidate_elt['jid'] = candidate.jid.full()
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123 candidate_elt['port'] = unicode(candidate.port)
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124 candidate_elt['priority'] = unicode(candidate.priority)
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125 candidate_elt['type'] = candidate.type
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126 return transport_elt
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127
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128 @defer.inlineCallbacks
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129 def jingleSessionInit(self, session, content_name, profile):
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130 client = self.host.getClient(profile)
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131 content_data = session['contents'][content_name]
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132 transport_data = content_data['transport_data']
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133 sid = transport_data['sid'] = unicode(uuid.uuid4())
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134 session_hash = transport_data['session_hash'] = self._s5b.getSessionHash(client.jid, session['peer_jid'], sid)
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135 transport_data['peer_session_hash'] = self._s5b.getSessionHash(session['peer_jid'], client.jid, sid) # requester and target are inversed for peer candidates
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136 transport_data['stream_d'] = self._s5b.registerHash(session_hash, None, profile)
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137 candidates = transport_data['candidates'] = yield self._s5b.getCandidates(profile)
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138 mode = 'tcp' # XXX: we only manage tcp for now
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139 transport_elt = self._buildCandidates(session, candidates, sid, session_hash, client, mode)
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140
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141 defer.returnValue(transport_elt)
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142
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143 def _proxyActivatedCb(self, iq_result_elt, candidate, session, content_name, profile):
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144 """Called when activation confirmation has been received from proxy
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145
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146 cf XEP-0260 § 2.4
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147 """
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148 # now that the proxy is activated, we have to inform other peer
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149 iq_elt, transport_elt = self._j.buildAction(self._j.A_TRANSPORT_INFO, session, content_name, profile)
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150 activated_elt = transport_elt.addElement('activated')
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151 activated_elt['cid'] = candidate.id
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152 iq_elt.send()
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153
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154 def _proxyActivatedEb(self, stanza_error, candidate, session, content_name, profile):
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155 """Called when activation error has been received from proxy
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156
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157 cf XEP-0260 § 2.4
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158 """
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159 # TODO: fallback to IBB
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160 # now that the proxy is activated, we have to inform other peer
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161 iq_elt, transport_elt = self._j.buildAction(self._j.A_TRANSPORT_INFO, session, content_name, profile)
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162 transport_elt.addElement('proxy-error')
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163 iq_elt.send()
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164 log.warning(u"Can't activate proxy, we need to fallback to IBB: {reason}"
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165 .format(reason = stanza_error.value.condition))
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166 client = self.host.getClient(profile)
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167 self.doFallback(session, content_name, client)
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168
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169 def _foundPeerCandidate(self, candidate, session, transport_data, content_name, client):
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170 """Called when the best candidate from other peer is found
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171
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172 @param candidate(XEP_0065.Candidate, None): selected candidate,
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173 or None if no candidate is accessible
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174 @param session(dict): session data
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175 @param transport_data(dict): transport data
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176 @param content_name(unicode): name of the current content
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177 @param client(unicode): %(doc_client)s
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178 """
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179
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180 transport_data['best_candidate'] = candidate
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181 # we need to disconnect all non selected candidates before removing them
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182 for c in transport_data['peer_candidates']:
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183 if c is None or c is candidate:
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184 continue
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185 c.discard()
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186 del transport_data['peer_candidates']
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187 iq_elt, transport_elt = self._j.buildAction(self._j.A_TRANSPORT_INFO, session, content_name, client.profile)
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188 if candidate is None:
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189 log.warning(u"Can't connect to any peer candidate")
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190 candidate_elt = transport_elt.addElement('candidate-error')
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191 else:
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192 log.info(u"Found best peer candidate: {}".format(unicode(candidate)))
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193 candidate_elt = transport_elt.addElement('candidate-used')
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194 candidate_elt['cid'] = candidate.id
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195 iq_elt.send() # TODO: check result stanza
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196 self._checkCandidates(session, content_name, transport_data, client)
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197
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198 def _checkCandidates(self, session, content_name, transport_data, client):
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199 """Called when a candidate has been choosed
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200
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201 if we have both candidates, we select one, or fallback to an other transport
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202 @param session(dict): session data
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203 @param content_name(unicode): name of the current content
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204 @param transport_data(dict): transport data
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205 @param client(unicode): %(doc_client)s
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206 """
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207 content_data = session['contents'][content_name]
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208 try:
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209 best_candidate = transport_data['best_candidate']
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210 except KeyError:
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211 # we have not our best candidate yet
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212 return
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213 try:
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214 peer_best_candidate = transport_data['peer_best_candidate']
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215 except KeyError:
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216 # we have not peer best candidate yet
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217 return
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218
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219 # at this point we have both candidates, it's time to choose one
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220 if best_candidate is None or peer_best_candidate is None:
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221 choosed_candidate = best_candidate or peer_best_candidate
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222 else:
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223 if best_candidate.priority == peer_best_candidate.priority:
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224 # same priority, we choose initiator one according to XEP-0260 §2.4 #4
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225 log.debug(u"Candidates have same priority, we select the one choosed by initiator")
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226 if session['initiator'] == client.jid:
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227 choosed_candidate = best_candidate
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228 else:
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229 choosed_candidate = peer_best_candidate
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230 else:
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diff changeset
231 choosed_candidate = max(best_candidate, peer_best_candidate, key=lambda c:c.priority)
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232
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233 if choosed_candidate is None:
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diff changeset
234 log.warning(u"Socks5 negociation failed, we need to fallback to IBB")
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235 self.doFallback(session, content_name, client)
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236 else:
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237 if choosed_candidate == peer_best_candidate:
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238 # peer_best_candidate was choosed from the candidates we have sent
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239 # so our_candidate is true if choosed_candidate is peer_best_candidate
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240 our_candidate = True
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241 # than also mean that best_candidate must be discarded !
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242 try:
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243 best_candidate.discard()
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244 except AttributeError: # but it can be None
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245 pass
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246 else:
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247 our_candidate = False
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248
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249 log.info(u"Socks5 negociation successful, {who} candidate will be used: {candidate}".format(
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250 who = u'our' if our_candidate else u'other peer',
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diff changeset
251 candidate = choosed_candidate))
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252 del transport_data['best_candidate']
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253 del transport_data['peer_best_candidate']
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254
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255 if choosed_candidate.type == self._s5b.TYPE_PROXY:
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256 # the file transfer need to wait for proxy activation
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257 # (see XEP-0260 § 2.4)
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258 if our_candidate:
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diff changeset
259 d = self._s5b.connectCandidate(choosed_candidate, transport_data['session_hash'], profile=client.profile)
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260 d.addCallback(lambda dummy: choosed_candidate.activate(transport_data['sid'], session['peer_jid'], client))
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diff changeset
261 args = [choosed_candidate, session, content_name, client.profile]
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262 d.addCallbacks(self._proxyActivatedCb, self._proxyActivatedEb, args, None, args)
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diff changeset
263 else:
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diff changeset
264 # this Deferred will be called when we'll receive activation confirmation from other peer
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diff changeset
265 d = transport_data['activation_d'] = defer.Deferred()
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diff changeset
266 else:
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diff changeset
267 d = defer.succeed(None)
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268
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269 if content_data['senders'] == session['role']:
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diff changeset
270 # we can now start the file transfer (or start it after proxy activation)
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
271 d.addCallback(lambda dummy: choosed_candidate.startTransfer(transport_data['session_hash']))
1756
061011fad5b1 plugin XEP-0260: better proxy error handling:
Goffi <goffi@goffi.org>
parents: 1755
diff changeset
272 d.addErrback(self._startEb, session, content_name, client)
061011fad5b1 plugin XEP-0260: better proxy error handling:
Goffi <goffi@goffi.org>
parents: 1755
diff changeset
273
061011fad5b1 plugin XEP-0260: better proxy error handling:
Goffi <goffi@goffi.org>
parents: 1755
diff changeset
274 def _startEb(self, fail, session, content_name, client):
061011fad5b1 plugin XEP-0260: better proxy error handling:
Goffi <goffi@goffi.org>
parents: 1755
diff changeset
275 """Called when it's not possible to start the transfer
061011fad5b1 plugin XEP-0260: better proxy error handling:
Goffi <goffi@goffi.org>
parents: 1755
diff changeset
276
061011fad5b1 plugin XEP-0260: better proxy error handling:
Goffi <goffi@goffi.org>
parents: 1755
diff changeset
277 Will try to fallback to IBB
061011fad5b1 plugin XEP-0260: better proxy error handling:
Goffi <goffi@goffi.org>
parents: 1755
diff changeset
278 """
061011fad5b1 plugin XEP-0260: better proxy error handling:
Goffi <goffi@goffi.org>
parents: 1755
diff changeset
279 try:
061011fad5b1 plugin XEP-0260: better proxy error handling:
Goffi <goffi@goffi.org>
parents: 1755
diff changeset
280 reason = unicode(fail.value)
061011fad5b1 plugin XEP-0260: better proxy error handling:
Goffi <goffi@goffi.org>
parents: 1755
diff changeset
281 except AttributeError:
061011fad5b1 plugin XEP-0260: better proxy error handling:
Goffi <goffi@goffi.org>
parents: 1755
diff changeset
282 reason = unicode(fail)
061011fad5b1 plugin XEP-0260: better proxy error handling:
Goffi <goffi@goffi.org>
parents: 1755
diff changeset
283 log.warning(u"Cant start transfert, we'll try fallback method: {}".format(reason))
061011fad5b1 plugin XEP-0260: better proxy error handling:
Goffi <goffi@goffi.org>
parents: 1755
diff changeset
284 self.doFallback(session, content_name, client)
1570
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
285
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
286 def _candidateInfo(self, candidate_elt, session, content_name, transport_data, client):
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
287 """Called when best candidate has been received from peer (or if none is working)
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
288
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
289 @param candidate_elt(domish.Element): candidate-used or candidate-error element
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
290 (see XEP-0260 §2.3)
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
291 @param session(dict): session data
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
292 @param content_name(unicode): name of the current content
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
293 @param transport_data(dict): transport data
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
294 @param client(unicode): %(doc_client)s
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
295 """
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
296 if candidate_elt.name == 'candidate-error':
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
297 # candidate-error, no candidate worked
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
298 transport_data['peer_best_candidate'] = None
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
299 else:
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
300 # candidate-used, one candidate was choosed
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
301 try:
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
302 cid = candidate_elt.attributes['cid']
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
303 except KeyError:
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
304 log.warning(u"No cid found in <candidate-used>")
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
305 raise exceptions.DataError
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
306 try:
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
307 candidate = (c for c in transport_data['candidates'] if c.id == cid).next()
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
308 except StopIteration:
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
309 log.warning(u"Given cid doesn't correspond to any known candidate !")
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
310 raise exceptions.DataError # TODO: send an error to other peer, and use better exception
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
311 except KeyError:
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
312 # a transport-info can also be intentionaly sent too early by other peer
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
313 # but there is little probability
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
314 log.error(u'"candidates" key doesn\'t exists in transport_data, it should at this point')
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
315 raise exceptions.InternalError
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
316 # at this point we have the candidate choosed by other peer
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
317 transport_data['peer_best_candidate'] = candidate
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
318 log.info(u"Other peer best candidate: {}".format(candidate))
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
319
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
320 del transport_data['candidates']
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
321 self._checkCandidates(session, content_name, transport_data, client)
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
322
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
323 def _proxyActivationInfo(self, proxy_elt, session, content_name, transport_data, client):
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
324 """Called when proxy has been activated (or has sent an error)
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
325
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
326 @param proxy_elt(domish.Element): <activated/> or <proxy-error/> element
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
327 (see XEP-0260 §2.4)
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
328 @param session(dict): session data
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
329 @param content_name(unicode): name of the current content
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
330 @param transport_data(dict): transport data
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
331 @param client(unicode): %(doc_client)s
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
332 """
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
333 try:
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
334 activation_d = transport_data.pop('activation_d')
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
335 except KeyError:
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
336 log.warning(u"Received unexpected transport-info for proxy activation")
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
337
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
338 if proxy_elt.name == 'activated':
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
339 activation_d.callback(None)
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
340 else:
1756
061011fad5b1 plugin XEP-0260: better proxy error handling:
Goffi <goffi@goffi.org>
parents: 1755
diff changeset
341 activation_d.errback(ProxyError())
1560
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
342
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
343 @defer.inlineCallbacks
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
344 def jingleHandler(self, action, session, content_name, transport_elt, profile):
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
345 client = self.host.getClient(profile)
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
346 content_data = session['contents'][content_name]
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
347 transport_data = content_data['transport_data']
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
348
1631
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
349 if action in (self._j.A_ACCEPTED_ACK, self._j.A_PREPARE_RESPONDER):
1560
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
350 pass
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
351
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
352 elif action == self._j.A_SESSION_ACCEPT:
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
353 # initiator side, we select a candidate in the ones sent by responder
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
354 assert 'peer_candidates' not in transport_data
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
355 transport_data['peer_candidates'] = self._parseCandidates(transport_elt)
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
356
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
357 elif action == self._j.A_START:
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
358 session_hash = transport_data['session_hash']
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
359 peer_candidates = transport_data['peer_candidates']
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
360 file_obj = content_data['file_obj']
1757
abd6d6f89006 plugins XEP-0065, XEP-0260: fixed session creation order: session is created earlied, and file object associated in a second time if needed
Goffi <goffi@goffi.org>
parents: 1756
diff changeset
361 self._s5b.associateFileObj(session_hash, file_obj, profile)
abd6d6f89006 plugins XEP-0065, XEP-0260: fixed session creation order: session is created earlied, and file object associated in a second time if needed
Goffi <goffi@goffi.org>
parents: 1756
diff changeset
362 stream_d = transport_data.pop('stream_d')
1571
c668081eba1c plugins XEP-0234, XEP-0260, XEP-0261: jingle session termination is managed by application (XEP-0234) instead of transport
Goffi <goffi@goffi.org>
parents: 1570
diff changeset
363 stream_d.chainDeferred(content_data['finished_d'])
1758
a66d34353f34 plugin XEP-0260, XEP-0065: fixed session hash handling:
Goffi <goffi@goffi.org>
parents: 1757
diff changeset
364 peer_session_hash = transport_data['peer_session_hash']
a66d34353f34 plugin XEP-0260, XEP-0065: fixed session hash handling:
Goffi <goffi@goffi.org>
parents: 1757
diff changeset
365 d = self._s5b.getBestCandidate(peer_candidates, session_hash, peer_session_hash, profile)
1560
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
366 d.addCallback(self._foundPeerCandidate, session, transport_data, content_name, client)
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
367
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
368 elif action == self._j.A_SESSION_INITIATE:
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
369 # responder side, we select a candidate in the ones sent by initiator
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
370 # and we give our candidates
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
371 assert 'peer_candidates' not in transport_data
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
372 sid = transport_data['sid'] = transport_elt['sid']
1758
a66d34353f34 plugin XEP-0260, XEP-0065: fixed session hash handling:
Goffi <goffi@goffi.org>
parents: 1757
diff changeset
373 session_hash = transport_data['session_hash'] = self._s5b.getSessionHash(client.jid, session['peer_jid'], sid)
a66d34353f34 plugin XEP-0260, XEP-0065: fixed session hash handling:
Goffi <goffi@goffi.org>
parents: 1757
diff changeset
374 peer_session_hash = transport_data['peer_session_hash'] = self._s5b.getSessionHash(session['peer_jid'], client.jid, sid) # requester and target are inversed for peer candidates
1560
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
375 peer_candidates = transport_data['peer_candidates'] = self._parseCandidates(transport_elt)
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
376 file_obj = content_data['file_obj']
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
377 stream_d = self._s5b.registerHash(session_hash, file_obj, profile)
1571
c668081eba1c plugins XEP-0234, XEP-0260, XEP-0261: jingle session termination is managed by application (XEP-0234) instead of transport
Goffi <goffi@goffi.org>
parents: 1570
diff changeset
378 stream_d.chainDeferred(content_data['finished_d'])
1758
a66d34353f34 plugin XEP-0260, XEP-0065: fixed session hash handling:
Goffi <goffi@goffi.org>
parents: 1757
diff changeset
379 d = self._s5b.getBestCandidate(peer_candidates, session_hash, peer_session_hash, profile)
1560
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
380 d.addCallback(self._foundPeerCandidate, session, transport_data, content_name, client)
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
381 candidates = yield self._s5b.getCandidates(profile)
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
382 # we remove duplicate candidates
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
383 candidates = [candidate for candidate in candidates if candidate not in peer_candidates]
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
384
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
385 transport_data['candidates'] = candidates
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
386 # we can now build a new <transport> element with our candidates
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
387 transport_elt = self._buildCandidates(session, candidates, sid, session_hash, client)
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
388
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
389 elif action == self._j.A_TRANSPORT_INFO:
1570
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
390 # transport-info can be about candidate or proxy activation
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
391 candidate_elt = None
1560
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
392
1570
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
393 for method, names in ((self._candidateInfo, ('candidate-used', 'candidate-error')),
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
394 (self._proxyActivationInfo, ('activated', 'proxy-error'))):
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
395 for name in names:
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
396 try:
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
397 candidate_elt = transport_elt.elements(NS_JINGLE_S5B, name).next()
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
398 except StopIteration:
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
399 continue
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
400 else:
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
401 method(candidate_elt, session, content_name, transport_data, client)
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
402 break
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
403
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
404 if candidate_elt is None:
37d4be4a9fed plugins XEP-0260, XEP-0065: proxy handling:
Goffi <goffi@goffi.org>
parents: 1567
diff changeset
405 log.warning(u"Unexpected transport element: {}".format(transport_elt.toXml()))
1631
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
406 elif action == self._j.A_DESTROY:
1758
a66d34353f34 plugin XEP-0260, XEP-0065: fixed session hash handling:
Goffi <goffi@goffi.org>
parents: 1757
diff changeset
407 # the transport is replaced (fallback ?), We need mainly to kill XEP-0065 session.
1631
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
408 # note that sid argument is not necessary for sessions created by this plugin
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
409 self._s5b.killSession(None, transport_data['session_hash'], None, client)
1560
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
410 else:
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
411 log.warning(u"FIXME: unmanaged action {}".format(action))
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
412
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
413 defer.returnValue(transport_elt)
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
414
1755
d2e023da2983 plugin XEP-0260: kill s5b session if session is declined
Goffi <goffi@goffi.org>
parents: 1631
diff changeset
415 def jingleTerminate(self, action, session, content_name, reason_elt, profile):
d2e023da2983 plugin XEP-0260: kill s5b session if session is declined
Goffi <goffi@goffi.org>
parents: 1631
diff changeset
416 if reason_elt.decline:
d2e023da2983 plugin XEP-0260: kill s5b session if session is declined
Goffi <goffi@goffi.org>
parents: 1631
diff changeset
417 log.debug(u"Session declined, deleting S5B session")
d2e023da2983 plugin XEP-0260: kill s5b session if session is declined
Goffi <goffi@goffi.org>
parents: 1631
diff changeset
418 # we just need to clean the S5B session if it is declined
d2e023da2983 plugin XEP-0260: kill s5b session if session is declined
Goffi <goffi@goffi.org>
parents: 1631
diff changeset
419 client = self.host.getClient(profile)
d2e023da2983 plugin XEP-0260: kill s5b session if session is declined
Goffi <goffi@goffi.org>
parents: 1631
diff changeset
420 content_data = session['contents'][content_name]
d2e023da2983 plugin XEP-0260: kill s5b session if session is declined
Goffi <goffi@goffi.org>
parents: 1631
diff changeset
421 transport_data = content_data['transport_data']
d2e023da2983 plugin XEP-0260: kill s5b session if session is declined
Goffi <goffi@goffi.org>
parents: 1631
diff changeset
422 self._s5b.killSession(None, transport_data['session_hash'], None, client)
d2e023da2983 plugin XEP-0260: kill s5b session if session is declined
Goffi <goffi@goffi.org>
parents: 1631
diff changeset
423
1631
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
424 def _doFallback(self, feature_checked, session, content_name, client):
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
425 """Do the fallback, method called once feature is checked
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
426
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
427 @param feature_checked(bool): True if other peer can do IBB
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
428 """
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
429 if not feature_checked:
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
430 log.warning(u"Other peer can't manage jingle IBB, be have to terminate the session")
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
431 self._j.terminate(self._j.REASON_CONNECTIVITY_ERROR, session, client.profile)
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
432 else:
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
433 self._j.transportReplace(self._jingle_ibb.NAMESPACE, session, content_name, client.profile)
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
434
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
435 def doFallback(self, session, content_name, client):
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
436 """Fallback to IBB transport, used in last resort
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
437
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
438 @param session(dict): session data
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
439 @param content_name(unicode): name of the current content
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
440 @param client(unicode): %(doc_client)s
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
441 """
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
442 if session['role'] != self._j.ROLE_INITIATOR:
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
443 # only initiator must do the fallback, see XEP-0260 §3
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
444 return
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
445 if self._jingle_ibb is None:
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
446 log.warning(u"Jingle IBB (XEP-0261) plugin is not available, we have to close the session")
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
447 self._j.terminate(self._j.REASON_CONNECTIVITY_ERROR, session, client.profile)
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
448 else:
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
449 d = self.host.hasFeature(self._jingle_ibb.NAMESPACE, session['peer_jid'], client.profile)
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
450 d.addCallback(self._doFallback, session, content_name, client)
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
451 return d
25906c0dbc63 plugin XEP-0260, XEP-0261: fallback from S5B to IBB is implemented
Goffi <goffi@goffi.org>
parents: 1571
diff changeset
452
1560
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
453
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
454 class XEP_0260_handler(XMPPHandler):
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
455 implements(iwokkel.IDisco)
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
456
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
457 def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
458 return [disco.DiscoFeature(NS_JINGLE_S5B)]
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
459
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
460 def getDiscoItems(self, requestor, target, nodeIdentifier=''):
dcce63810733 plugin XEP-0260: first draft
Goffi <goffi@goffi.org>
parents:
diff changeset
461 return []