Mercurial > libervia-backend
annotate src/plugins/plugin_xep_0166.py @ 1622:5b24d6bf5d15
core, bridge: actionsGet:
- added a new mechanism to keep actions until they are answered (or timeout-ed)
- keep_id must be explicitly used on actionNew
- actionsGet is used to retrive these actions
- the mechanism is used in deferXMLUI
author | Goffi <goffi@goffi.org> |
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date | Tue, 17 Nov 2015 21:28:58 +0100 |
parents | d05f9179fe22 |
children | c25f63215632 |
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-0166) |
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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 _, D_ |
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21 from sat.core.constants import Const as C |
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22 from sat.core.log import getLogger |
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23 from sat.tools import xml_tools |
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24 log = getLogger(__name__) |
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25 from sat.core import exceptions |
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26 from twisted.words.protocols.jabber import jid |
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27 from twisted.internet import defer |
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28 from twisted.internet import reactor |
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29 from wokkel import disco, iwokkel |
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30 from twisted.words.protocols.jabber import error |
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31 from twisted.words.protocols.jabber import xmlstream |
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32 from twisted.python import failure |
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33 from collections import namedtuple |
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34 import uuid |
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35 import time |
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36 |
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37 from zope.interface import implements |
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38 |
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39 |
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40 |
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41 IQ_SET = '/iq[@type="set"]' |
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42 NS_JINGLE = "urn:xmpp:jingle:1" |
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43 NS_JINGLE_ERROR = "urn:xmpp:jingle:errors:1" |
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44 JINGLE_REQUEST = IQ_SET + '/jingle[@xmlns="' + NS_JINGLE + '"]' |
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45 STATE_PENDING = "PENDING" |
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46 STATE_ACTIVE = "ACTIVE" |
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47 STATE_ENDED = "ENDED" |
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48 CONFIRM_TXT = D_("{entity} want to start a jingle session with you, do you accept ?") |
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49 |
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50 PLUGIN_INFO = { |
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51 "name": "Jingle", |
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52 "import_name": "XEP-0166", |
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53 "type": "XEP", |
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54 "protocols": ["XEP-0166"], |
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55 "main": "XEP_0166", |
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56 "handler": "yes", |
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57 "description": _("""Implementation of Jingle""") |
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58 } |
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59 |
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60 |
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61 ApplicationData = namedtuple('ApplicationData', ('namespace', 'handler')) |
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62 TransportData = namedtuple('TransportData', ('namespace', 'handler', 'priority')) |
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63 |
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64 |
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65 class XEP_0166(object): |
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66 ROLE_INITIATOR = "initiator" |
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67 ROLE_RESPONDER = "responder" |
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68 TRANSPORT_DATAGRAM='UDP' |
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69 TRANSPORT_STREAMING='TCP' |
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70 REASON_SUCCESS='success' |
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71 REASON_DECLINE='decline' |
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72 REASON_FAILED_APPLICATION='failed-application' |
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73 REASON_FAILED_TRANSPORT='failed-transport' |
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74 A_SESSION_INITIATE = "session-initiate" |
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75 A_SESSION_ACCEPT = "session-accept" |
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76 A_SESSION_TERMINATE = "session-terminate" |
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77 A_SESSION_INFO = "session-info" |
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78 A_TRANSPORT_INFO = "transport-info" |
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79 # non standard actions |
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80 A_PREPARE_INITIATOR = "prepare-initiator" # initiator must prepare tranfer |
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81 A_PREPARE_RESPONDER = "prepare-responder" # responder must prepare tranfer |
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82 A_ACCEPTED_ACK = "accepted-ack" # session accepted ack has been received from initiator |
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83 A_START = "start" # application can start |
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84 |
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85 def __init__(self, host): |
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86 log.info(_("plugin Jingle initialization")) |
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87 self.host = host |
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88 self._applications = {} # key: namespace, value: application data |
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89 self._transports = {} # key: namespace, value: transport data |
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90 # we also keep transports by type, they are then sorted by priority |
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91 self._type_transports = { XEP_0166.TRANSPORT_DATAGRAM: [], |
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92 XEP_0166.TRANSPORT_STREAMING: [], |
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93 } |
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94 |
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95 def profileConnected(self, profile): |
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96 client = self.host.getClient(profile) |
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97 client.jingle_sessions = {} # key = sid, value = session_data |
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98 |
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99 def getHandler(self, profile): |
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100 return XEP_0166_handler(self) |
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101 |
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102 def _delSession(self, client, sid): |
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103 try: |
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104 del client.jingle_sessions[sid] |
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105 except KeyError: |
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106 log.debug(u"Jingle session id [{}] is unknown, nothing to delete".format(sid)) |
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107 else: |
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108 log.debug(u"Jingle session id [{}] deleted".format(sid)) |
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109 |
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110 ## helpers methods to build stanzas ## |
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111 |
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112 def _buildJingleElt(self, client, session, action): |
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113 iq_elt = client.IQ('set') |
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114 iq_elt['from'] = client.jid.full() |
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115 iq_elt['to'] = session['peer_jid'].full() |
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116 jingle_elt = iq_elt.addElement("jingle", NS_JINGLE) |
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117 jingle_elt["sid"] = session['id'] |
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118 jingle_elt['action'] = action |
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119 return iq_elt, jingle_elt |
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120 |
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121 def sendError(self, error_condition, sid, request, jingle_condition=None, profile=C.PROF_KEY_NONE): |
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122 """Send error stanza |
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123 |
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124 @param error_condition: one of twisted.words.protocols.jabber.error.STANZA_CONDITIONS keys |
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125 @param sid(unicode,None): jingle session id, or None, if session must not be destroyed |
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126 @param request(domish.Element): original request |
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127 @param jingle_condition(None, unicode): if not None, additional jingle-specific error information |
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128 @param profile: %(doc_profile)s |
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129 """ |
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130 client = self.host.getClient(profile) |
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131 iq_elt = error.StanzaError(error_condition).toResponse(request) |
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132 if jingle_condition is not None: |
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133 iq_elt.error.addElement((NS_JINGLE_ERROR, jingle_condition)) |
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134 if error.STANZA_CONDITIONS[error_condition]['type'] == 'cancel' and sid: |
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135 self._delSession(client, sid) |
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136 log.warning(u"Error while managing jingle session, cancelling: {condition}".format(error_condition)) |
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137 client.xmlstream.send(iq_elt) |
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138 |
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139 def terminate(self, reason, session, profile): |
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140 """Terminate the session |
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141 |
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142 send the session-terminate action, and delete the session data |
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143 @param reason(unicode, list[domish.Element]): if unicode, will be transformed to an element |
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144 if a list of element, add them as children of the <reason/> element |
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145 @param session(dict): data of the session |
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146 @param profile: %(doc_profile)s |
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147 """ |
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148 client = self.host.getClient(profile) |
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149 iq_elt, jingle_elt = self._buildJingleElt(client, session, XEP_0166.A_SESSION_TERMINATE) |
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150 reason_elt = jingle_elt.addElement('reason') |
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151 if isinstance(reason, basestring): |
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152 reason_elt.addElement(reason) |
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153 else: |
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154 for elt in reason: |
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155 reason_elt.addChild(elt) |
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156 self._delSession(client, session['id']) |
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157 d = iq_elt.send() |
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158 return d |
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159 |
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160 ## errors which doesn't imply a stanza sending ## |
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161 |
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162 def _iqError(self, failure_, sid, client): |
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163 """Called when we got an <iq/> error |
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164 |
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165 @param failure_(failure.Failure): the exceptions raised |
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166 @param sid(unicode): jingle session id |
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167 @param profile: %(doc_client)s |
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168 """ |
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169 log.warning(u"Error while sending jingle <iq/> stanza: {failure_}".format(failure_=failure_.value)) |
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170 self._delSession(client, sid) |
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171 |
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172 def _jingleErrorCb(self, fail, sid, request, client): |
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173 """Called when something is going wrong while parsing jingle request |
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174 |
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175 The error condition depend of the exceptions raised: |
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176 exceptions.DataError raise a bad-request condition |
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177 @param fail(failure.Failure): the exceptions raised |
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178 @param sid(unicode): jingle session id |
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179 @param request(domsih.Element): jingle request |
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180 @param client: %(doc_client)s |
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181 """ |
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182 log.warning("Error while processing jingle request") |
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183 if isinstance(fail, exceptions.DataError): |
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184 self.sendError('bad-request', sid, request, profile=client.profile) |
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185 else: |
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186 log.error("Unmanaged jingle exception") |
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187 self._delSession(client, sid) |
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188 raise fail |
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189 |
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190 ## methods used by other plugins ## |
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191 |
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192 def registerApplication(self, namespace, handler): |
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193 """Register an application plugin |
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194 |
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195 @param namespace(unicode): application namespace managed by the plugin |
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196 @param handler(object): instance of a class which manage the application. |
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197 May have the following methods: |
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198 - requestConfirmation(session, desc_elt, client): |
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199 - if present, it is called on when session must be accepted. |
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200 - if it return True the session is accepted, else rejected. |
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201 A Deferred can be returned |
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202 - if not present, a generic accept dialog will be used |
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203 - jingleSessionInit(self, session, content_name[, *args, **kwargs], profile): must return the domish.Element used for initial content |
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204 - jingleHandler(self, action, session, content_name, transport_elt, profile): |
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205 called on several action to negociate the application or transport |
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206 """ |
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207 if namespace in self._applications: |
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208 raise exceptions.ConflictError(u"Trying to register already registered namespace {}".format(namespace)) |
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209 self._applications[namespace] = ApplicationData(namespace=namespace, handler=handler) |
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210 log.debug(u"new jingle application registered") |
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211 |
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212 def registerTransport(self, namespace, transport_type, handler, priority=0): |
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213 """Register a transport plugin |
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214 |
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215 @param namespace(unicode): the XML namespace used for this transport |
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216 @param transport_type(unicode): type of transport to use (see XEP-0166 §8) |
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217 @param handler(object): instance of a class which manage the application. |
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218 Must have the following methods: |
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219 - jingleSessionInit(self, session, content_name[, *args, **kwargs], profile): must return the domish.Element used for initial content |
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220 - jingleHandler(self, action, session, content_name, transport_elt, profile): |
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221 called on several action to negociate the application or transport |
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222 @param priority(int): priority of this transport |
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223 """ |
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224 assert transport_type in (XEP_0166.TRANSPORT_DATAGRAM, XEP_0166.TRANSPORT_STREAMING) |
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225 if namespace in self._transports: |
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226 raise exceptions.ConflictError(u"Trying to register already registered namespace {}".format(namespace)) |
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227 transport_data = TransportData(namespace=namespace, handler=handler, priority=priority) |
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228 self._type_transports[transport_type].append(transport_data) |
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229 self._type_transports[transport_type].sort(key=lambda transport_data: transport_data.priority, reverse=True) |
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230 self._transports[namespace] = transport_data |
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231 log.debug(u"new jingle transport registered") |
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232 |
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233 def buildAction(self, action, session, content_name, profile=C.PROF_KEY_NONE): |
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234 """Build an element according to requested action |
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235 |
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236 @param action(unicode): a jingle action (see XEP-0166 §7.2), |
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237 session-* actions are not managed here |
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238 @param session(dict): jingle session data |
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239 @param content_name(unicode): name of the content |
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240 @param profile: %(doc_profile)s |
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241 @return (tuple[domish.Element, domish.Element]): parent <iq> element, <transport> or <description> element, according to action |
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242 """ |
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243 client = self.host.getClient(profile) |
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244 |
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245 # we first build iq, jingle and content element which are the same in every cases |
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246 iq_elt, jingle_elt = self._buildJingleElt(client, session, action) |
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247 # FIXME: XEP-0260 § 2.3 Ex 5 has an initiator attribute, but it should not according to XEP-0166 §7.1 table 1, must be checked |
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248 content_data= session['contents'][content_name] |
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249 content_elt = jingle_elt.addElement('content') |
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250 content_elt['name'] = content_name |
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251 content_elt['creator'] = content_data['creator'] |
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252 |
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253 if action == XEP_0166.A_TRANSPORT_INFO: |
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254 context_elt = transport_elt = content_elt.addElement('transport', content_data['transport'].namespace) |
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255 transport_elt['sid'] = content_data['transport_data']['sid'] |
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256 else: |
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257 raise exceptions.InternalError(u"unmanaged action {}".format(action)) |
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258 |
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259 return iq_elt, context_elt |
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260 |
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261 def buildSessionInfo(self, session, profile=C.PROF_KEY_NONE): |
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262 """Build a session-info action |
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263 |
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264 @param session(dict): jingle session data |
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265 @param profile: %(doc_profile)s |
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266 @return (tuple[domish.Element, domish.Element]): parent <iq> element, <jingle> element |
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267 """ |
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268 client = self.host.getClient(profile) |
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269 return self._buildJingleElt(client, session, XEP_0166.A_SESSION_INFO) |
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270 |
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271 @defer.inlineCallbacks |
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272 def initiate(self, peer_jid, contents, profile=C.PROF_KEY_NONE): |
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273 """Send a session initiation request |
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274 |
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275 @param peer_jid(jid.JID): jid to establith session with |
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276 @param contents(list[dict]): list of contents to use: |
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277 The dict must have the following keys: |
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278 - app_ns(unicode): namespace of the application |
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279 the following keys are optional: |
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280 - transport_type(unicode): type of transport to use (see XEP-0166 §8) |
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281 default to TRANSPORT_STREAMING |
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282 - name(unicode): name of the content |
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283 - senders(unicode): One of XEP_0166.ROLE_INITIATOR, XEP_0166.ROLE_RESPONDER, both or none |
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284 default to BOTH (see XEP-0166 §7.3) |
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285 - app_args(list): args to pass to the application plugin |
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286 - app_kwargs(dict): keyword args to pass to the application plugin |
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287 @param profile: %(doc_profile)s |
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288 @return D(unicode): jingle session id |
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289 """ |
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290 assert contents # there must be at least one content |
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291 client = self.host.getClient(profile) |
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292 initiator = client.jid |
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293 sid = unicode(uuid.uuid4()) |
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294 # TODO: session cleaning after timeout ? |
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295 session = client.jingle_sessions[sid] = {'id': sid, |
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296 'state': STATE_PENDING, |
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297 'initiator': initiator, |
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298 'role': XEP_0166.ROLE_INITIATOR, |
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299 'peer_jid': peer_jid, |
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300 'started': time.time(), |
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301 'contents': {} |
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302 } |
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303 iq_elt, jingle_elt = self._buildJingleElt(client, session, XEP_0166.A_SESSION_INITIATE) |
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304 jingle_elt["initiator"] = initiator.full() |
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305 |
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306 contents_dict = session['contents'] |
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307 |
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308 for content in contents: |
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309 # we get the application plugin |
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310 app_ns = content['app_ns'] |
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311 try: |
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312 application = self._applications[app_ns] |
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313 except KeyError: |
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314 raise exceptions.InternalError(u"No application registered for {}".format(app_ns)) |
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315 |
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316 # and the transport plugin |
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317 transport_type = content.get('transport_type', XEP_0166.TRANSPORT_STREAMING) |
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318 try: |
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319 transport = self._type_transports[transport_type][0] |
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320 except IndexError: |
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321 raise exceptions.InternalError(u"No transport registered for {}".format(transport_type)) |
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322 |
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323 # we build the session data |
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324 content_data = {'application': application, |
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325 'application_data': {}, |
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326 'transport': transport, |
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327 'transport_data': {}, |
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328 'creator': XEP_0166.ROLE_INITIATOR, |
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329 'senders': content.get('senders', 'both'), |
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330 } |
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331 try: |
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332 content_name = content['name'] |
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333 except KeyError: |
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334 content_name = unicode(uuid.uuid4()) |
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335 else: |
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336 if content_name in contents_dict: |
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337 raise exceptions.InternalError('There is already a content with this name') |
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338 contents_dict[content_name] = content_data |
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339 |
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340 # we construct the content element |
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341 content_elt = jingle_elt.addElement('content') |
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342 content_elt['creator'] = content_data['creator'] |
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343 content_elt['name'] = content_name |
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344 try: |
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345 content_elt['senders'] = content['senders'] |
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346 except KeyError: |
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347 pass |
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348 |
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349 # then the description element |
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350 app_args = content.get('app_args', []) |
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351 app_kwargs = content.get('app_kwargs', {}) |
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352 app_kwargs['profile'] = profile |
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353 desc_elt = yield application.handler.jingleSessionInit(session, content_name, *app_args, **app_kwargs) |
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354 content_elt.addChild(desc_elt) |
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355 |
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356 # and the transport one |
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357 transport_elt = yield transport.handler.jingleSessionInit(session, content_name, profile) |
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358 content_elt.addChild(transport_elt) |
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359 |
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360 d = iq_elt.send() |
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361 d.addErrback(self._iqError, sid, client) |
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362 yield d |
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363 |
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364 def delayedContentTerminate(self, *args, **kwargs): |
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365 """Put contentTerminate in queue but don't execute immediately |
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366 |
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367 This is used to terminate a content inside a handler, to avoid modifying contents |
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368 """ |
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369 reactor.callLater(0, self.contentTerminate, *args, **kwargs) |
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370 |
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371 def contentTerminate(self, session, content_name, reason=REASON_SUCCESS, profile=C.PROF_KEY_NONE): |
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372 """Terminate and remove a content |
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373 |
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374 if there is no more content, then session is terminated |
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375 @param session(dict): jingle session |
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376 @param content_name(unicode): name of the content terminated |
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377 @param reason(unicode): reason of the termination |
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378 @param profile: %(doc_profile)s |
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379 """ |
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380 contents = session['contents'] |
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381 del contents[content_name] |
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382 if not contents: |
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383 self.terminate(reason, session, profile) |
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384 |
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385 ## defaults methods called when plugin doesn't have them ## |
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386 |
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387 def jingleRequestConfirmationDefault(self, action, session, content_name, desc_elt, profile): |
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388 """This method request confirmation for a jingle session""" |
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389 log.debug(u"Using generic jingle confirmation method") |
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390 return xml_tools.deferConfirm(self.host, _(CONFIRM_TXT).format(entity=session['peer_jid'].full()), _('Confirm Jingle session'), profile=profile) |
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391 |
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392 ## jingle events ## |
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393 |
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394 def _onJingleRequest(self, request, profile): |
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395 """Called when any jingle request is received |
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396 |
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397 The request will the be dispatched to appropriate method |
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398 according to current state |
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399 @param request(domish.Element): received IQ request |
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400 @para profile: %(doc_profile)s |
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401 """ |
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402 client = self.host.getClient(profile) |
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403 request.handled = True |
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404 jingle_elt = request.elements(NS_JINGLE, 'jingle').next() |
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405 |
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406 # first we need the session id |
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407 try: |
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408 sid = jingle_elt['sid'] |
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409 if not sid: |
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410 raise KeyError |
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411 except KeyError: |
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412 log.warning(u"Received jingle request has no sid attribute") |
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413 self.sendError('bad-request', None, request, profile=profile) |
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414 return |
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415 |
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416 # then the action |
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417 try: |
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418 action = jingle_elt['action'] |
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419 if not action: |
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420 raise KeyError |
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421 except KeyError: |
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422 log.warning(u"Received jingle request has no action") |
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423 self.sendError('bad-request', None, request, profile=profile) |
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424 return |
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425 |
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426 peer_jid = jid.JID(request['from']) |
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427 |
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428 # we get or create the session |
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429 try: |
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430 session = client.jingle_sessions[sid] |
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431 except KeyError: |
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432 if action != XEP_0166.A_SESSION_INITIATE: |
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433 log.warning(u"Received request for an unknown session id: {}".format(sid)) |
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434 self.sendError('not-acceptable', None, request, profile=profile) |
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435 return |
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436 |
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437 session = client.jingle_sessions[sid] = {'id': sid, |
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438 'state': STATE_PENDING, |
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439 'initiator': peer_jid, |
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440 'role': XEP_0166.ROLE_RESPONDER, |
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441 'peer_jid': peer_jid, |
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442 'started': time.time(), |
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443 } |
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444 else: |
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445 if session['peer_jid'] != peer_jid: |
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446 log.warning(u"sid conflict ({}), the jid doesn't match. Can be a collision, a hack attempt, or a bad sid generation".format(sid)) |
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447 self.sendError('service-unavailable', sid, request, profile=profile) |
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448 return |
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449 if session['id'] != sid: |
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450 log.error(u"session id doesn't match") |
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451 self.sendError('service-unavailable', sid, request, profile=profile) |
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452 raise exceptions.InternalError |
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453 |
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454 if action == XEP_0166.A_SESSION_INITIATE: |
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455 self.onSessionInitiate(client, request, jingle_elt, session) |
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456 elif action == XEP_0166.A_SESSION_TERMINATE: |
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457 self.onSessionTerminate(client, request, jingle_elt, session) |
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458 elif action == XEP_0166.A_SESSION_ACCEPT: |
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459 self.onSessionAccept(client, request, jingle_elt, session) |
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460 elif action == XEP_0166.A_SESSION_INFO: |
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461 self.onSessionInfo(client, request, jingle_elt, session) |
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462 elif action == XEP_0166.A_TRANSPORT_INFO: |
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463 self.onTransportInfo(client, request, jingle_elt, session) |
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464 else: |
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465 raise exceptions.InternalError(u"Unknown action {}".format(action)) |
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466 |
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467 ## Actions callbacks ## |
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468 |
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469 def _parseElements(self, jingle_elt, session, request, client, new=False, creator=ROLE_INITIATOR, with_application=True, with_transport=True): |
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470 """Parse contents elements and fill contents_dict accordingly |
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471 |
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472 after the parsing, contents_dict will containt handlers, "desc_elt" and "transport_elt" |
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473 @param jingle_elt(domish.Element): parent <jingle> element, containing one or more <content> |
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474 @param session(dict): session data |
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475 @param request(domish.Element): the whole request |
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476 @param client: %(doc_client)s |
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477 @param new(bool): if new the content is new and must be created, |
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|
478 else the content must exists, and session data will be filled |
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479 @param creator(unicode): only used if new is True: creating pear (see § 7.3) |
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480 @param with_application(bool): if True, raise an error if there is no <description> element else ignore it |
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481 @param with_transport(bool): if True, raise an error if there is no <transport> element else ignore it |
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482 @raise exceptions.CancelError: the error is treated the calling method can cancel the treatment (i.e. return) |
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483 """ |
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|
484 contents_dict = session['contents'] |
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|
485 content_elts = jingle_elt.elements(NS_JINGLE, 'content') |
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|
486 |
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|
487 for content_elt in content_elts: |
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|
488 name = content_elt['name'] |
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|
489 |
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|
490 if new: |
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|
491 # the content must not exist, we check it |
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|
492 if not name or name in contents_dict: |
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493 self.sendError('bad-request', session['id'], request, profile=client.profile) |
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494 raise exceptions.CancelError |
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|
495 content_data = contents_dict[name] = {'creator': creator, |
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496 'senders': content_elt.attributes.get('senders', 'both'), |
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497 } |
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498 else: |
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499 # the content must exist, we check it |
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|
500 try: |
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|
501 content_data = contents_dict[name] |
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|
502 except KeyError: |
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|
503 log.warning(u"Other peer try to access an unknown content") |
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504 self.sendError('bad-request', session['id'], request, profile=client.profile) |
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|
505 raise exceptions.CancelError |
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|
506 |
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|
507 # application |
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508 if with_application: |
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509 desc_elt = content_elt.description |
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510 if not desc_elt: |
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511 self.sendError('bad-request', session['id'], request, profile=client.profile) |
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512 raise exceptions.CancelError |
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|
513 |
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514 if new: |
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515 # the content is new, we need to check and link the application |
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516 app_ns = desc_elt.uri |
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517 if not app_ns or app_ns == NS_JINGLE: |
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518 self.sendError('bad-request', session['id'], request, profile=client.profile) |
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519 raise exceptions.CancelError |
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|
520 |
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521 try: |
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|
522 application = self._applications[app_ns] |
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523 except KeyError: |
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|
524 log.warning(u"Unmanaged application namespace [{}]".format(app_ns)) |
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|
525 self.sendError('service-unavailable', session['id'], request, profile=client.profile) |
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|
526 raise exceptions.CancelError |
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|
527 |
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528 content_data['application'] = application |
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529 content_data['application_data'] = {} |
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530 else: |
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531 # the content exists, we check that we have not a former desc_elt |
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532 if 'desc_elt' in content_data: |
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533 raise exceptions.InternalError(u"desc_elt should not exist at this point") |
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534 |
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535 content_data['desc_elt'] = desc_elt |
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536 |
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537 # transport |
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538 if with_transport: |
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539 transport_elt = content_elt.transport |
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540 if not transport_elt: |
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541 self.sendError('bad-request', session['id'], request, profile=client.profile) |
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542 raise exceptions.CancelError |
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543 |
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544 if new: |
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545 # the content is new, we need to check and link the transport |
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546 transport_ns = transport_elt.uri |
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547 if not app_ns or app_ns == NS_JINGLE: |
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548 self.sendError('bad-request', session['id'], request, profile=client.profile) |
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549 raise exceptions.CancelError |
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550 |
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551 try: |
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552 transport = self._transports[transport_ns] |
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553 except KeyError: |
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554 raise exceptions.InternalError(u"No transport registered for namespace {}".format(transport_ns)) |
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555 content_data['transport'] = transport |
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556 content_data['transport_data'] = {} |
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557 else: |
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558 # the content exists, we check that we have not a former transport_elt |
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559 if 'transport_elt' in content_data: |
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560 raise exceptions.InternalError(u"desc_elt should not exist at this point") |
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561 |
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562 content_data['transport_elt'] = transport_elt |
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563 |
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564 def _callPlugins(self, action, session, app_method_name='jingleHandler', transp_method_name='jingleHandler', |
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565 app_default_cb=None, transp_default_cb=None, delete=True, |
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566 elements=True, force_element=None, profile=C.PROF_KEY_NONE): |
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567 """Call application and transport plugin methods for all contents |
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568 |
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569 @param action(unicode): jingle action name |
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570 @param session(dict): jingle session data |
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571 @param app_method_name(unicode, None): name of the method to call for applications |
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572 None to ignore |
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573 @param transp_method_name(unicode, None): name of the method to call for transports |
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574 None to ignore |
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575 @param app_default_cb(callable, None): default callback to use if plugin has not app_method_name |
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576 None to raise an exception instead |
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577 @param transp_default_cb(callable, None): default callback to use if plugin has not transp_method_name |
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578 None to raise an exception instead |
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579 @param delete(bool): if True, remove desc_elt and transport_elt from session |
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580 ignored if elements is False |
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581 @param elements(bool): True if elements(desc_elt and tranport_elt) must be managed |
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582 must be True if _callPlugins is used in a request, and False if it used after a request (i.e. on <iq> result or error) |
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583 @param force_element(None, domish.Element, object): if elements is None, it is used as element parameter |
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584 else it is ignored |
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585 @param profile(unicode): %(doc_profile)s |
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586 @return (list[defer.Deferred]): list of launched Deferred |
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587 @raise exceptions.NotFound: method is not implemented |
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588 """ |
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589 contents_dict = session['contents'] |
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590 defers_list = [] |
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591 for content_name, content_data in contents_dict.iteritems(): |
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592 for method_name, handler_key, default_cb, elt_name in ( |
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593 (app_method_name, 'application', app_default_cb, 'desc_elt'), |
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|
594 (transp_method_name, 'transport', transp_default_cb, 'transport_elt')): |
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|
595 if method_name is None: |
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|
596 continue |
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|
597 |
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598 handler = content_data[handler_key].handler |
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599 try: |
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600 method = getattr(handler, method_name) |
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601 except AttributeError: |
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602 if default_cb is not None: |
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603 method = default_cb |
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604 else: |
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605 raise exceptions.NotFound(u'{} not implemented !'.format(method_name)) |
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606 if elements: |
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607 elt = content_data.pop(elt_name) if delete else content_data[elt_name] |
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608 else: |
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609 elt = force_element |
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610 d = defer.maybeDeferred(method, action, session, content_name, elt, profile) |
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611 defers_list.append(d) |
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|
612 |
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|
613 return defers_list |
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|
614 |
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|
615 def onSessionInitiate(self, client, request, jingle_elt, session): |
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616 """Called on session-initiate action |
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|
617 |
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|
618 The "jingleRequestConfirmation" method of each application will be called |
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|
619 (or self.jingleRequestConfirmationDefault if the former doesn't exist). |
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|
620 The session is only accepted if all application are confirmed. |
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621 The application must manage itself multiple contents scenari (e.g. audio/video). |
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622 @param client: %(doc_client)s |
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|
623 @param request(domish.Element): full request |
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624 @param jingle_elt(domish.Element): <jingle> element |
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625 @param session(dict): session data |
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|
626 """ |
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|
627 if 'contents' in session: |
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|
628 raise exceptions.InternalError("Contents dict should not already exist at this point") |
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|
629 session['contents'] = contents_dict = {} |
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|
630 |
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|
631 try: |
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|
632 self._parseElements(jingle_elt, session, request, client, True, XEP_0166.ROLE_INITIATOR) |
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633 except exceptions.CancelError: |
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634 return |
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635 |
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636 if not contents_dict: |
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637 # there MUST be at least one content |
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638 self.sendError('bad-request', session['id'], request, profile=client.profile) |
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639 return |
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640 |
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641 # at this point we can send the <iq/> result to confirm reception of the request |
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642 client.xmlstream.send(xmlstream.toResponse(request, 'result')) |
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643 |
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644 # we now request each application plugin confirmation |
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645 # and if all are accepted, we can accept the session |
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646 confirm_defers = self._callPlugins(XEP_0166.A_SESSION_INITIATE, session, 'jingleRequestConfirmation', None, self.jingleRequestConfirmationDefault, delete=False, profile=client.profile) |
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647 |
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648 confirm_dlist = defer.gatherResults(confirm_defers) |
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649 confirm_dlist.addCallback(self._confirmationCb, session, jingle_elt, client) |
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650 confirm_dlist.addErrback(self._jingleErrorCb, session['id'], request, client) |
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651 |
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652 def _confirmationCb(self, confirm_results, session, jingle_elt, client): |
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653 """Method called when confirmation from user has been received |
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654 |
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655 This method is only called for the responder |
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656 @param confirm_results(list[bool]): all True if session is accepted |
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657 @param session(dict): session data |
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658 @param jingle_elt(domish.Element): jingle data of this session |
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659 @param client: %(doc_client)s |
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660 """ |
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661 confirmed = all(confirm_results) |
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662 if not confirmed: |
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663 return self.terminate(XEP_0166.REASON_DECLINE, session, client.profile) |
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664 |
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665 iq_elt, jingle_elt = self._buildJingleElt(client, session, XEP_0166.A_SESSION_ACCEPT) |
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666 jingle_elt['responder'] = client.jid.full() |
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667 |
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668 # contents |
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669 |
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670 def addElement(domish_elt, content_elt): |
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671 content_elt.addChild(domish_elt) |
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672 |
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673 defers_list = [] |
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674 |
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675 for content_name, content_data in session['contents'].iteritems(): |
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676 content_elt = jingle_elt.addElement('content') |
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677 content_elt['creator'] = XEP_0166.ROLE_INITIATOR |
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678 content_elt['name'] = content_name |
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679 |
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680 application = content_data['application'] |
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681 app_session_accept_cb = application.handler.jingleHandler |
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682 |
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683 app_d = defer.maybeDeferred(app_session_accept_cb, |
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684 XEP_0166.A_SESSION_INITIATE, session, content_name, content_data.pop('desc_elt'), client.profile) |
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685 app_d.addCallback(addElement, content_elt) |
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686 defers_list.append(app_d) |
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687 |
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688 transport = content_data['transport'] |
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689 transport_session_accept_cb = transport.handler.jingleHandler |
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690 |
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691 transport_d = defer.maybeDeferred(transport_session_accept_cb, |
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692 XEP_0166.A_SESSION_INITIATE, session, content_name, content_data.pop('transport_elt'), client.profile) |
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693 transport_d.addCallback(addElement, content_elt) |
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694 defers_list.append(transport_d) |
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695 |
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696 d_list = defer.DeferredList(defers_list) |
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697 d_list.addCallback(lambda dummy: self._callPlugins(XEP_0166.A_PREPARE_RESPONDER, session, app_method_name=None, elements=False, profile=client.profile)) |
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698 d_list.addCallback(lambda dummy: iq_elt.send()) |
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699 def changeState(dummy, session): |
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700 session['state'] = STATE_ACTIVE |
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701 |
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702 d_list.addCallback(changeState, session) |
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703 d_list.addCallback(lambda dummy: self._callPlugins(XEP_0166.A_ACCEPTED_ACK, session, elements=False, profile=client.profile)) |
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704 d_list.addErrback(self._iqError, session['id'], client) |
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705 return d_list |
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706 |
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707 def onSessionTerminate(self, client, request, jingle_elt, session): |
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708 # TODO: check reason, display a message to user if needed |
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709 log.debug("Jingle Session {} terminated".format(session['id'])) |
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710 self._delSession(client, session['id']) |
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711 client.xmlstream.send(xmlstream.toResponse(request, 'result')) |
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712 |
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713 def onSessionAccept(self, client, request, jingle_elt, session): |
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714 """Method called once session is accepted |
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715 |
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716 This method is only called for initiator |
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717 @param client: %(doc_client)s |
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718 @param request(domish.Element): full <iq> request |
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719 @param jingle_elt(domish.Element): the <jingle> element |
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720 @param session(dict): session data |
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721 """ |
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722 log.debug(u"Jingle session {} has been accepted".format(session['id'])) |
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723 |
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724 try: |
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725 self._parseElements(jingle_elt, session, request, client) |
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726 except exceptions.CancelError: |
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727 return |
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|
728 |
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729 # at this point we can send the <iq/> result to confirm reception of the request |
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730 client.xmlstream.send(xmlstream.toResponse(request, 'result')) |
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731 # and change the state |
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732 session['state'] = STATE_ACTIVE |
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733 |
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734 negociate_defers = [] |
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735 negociate_defers = self._callPlugins(XEP_0166.A_SESSION_ACCEPT, session, profile=client.profile) |
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736 |
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737 negociate_dlist = defer.DeferredList(negociate_defers) |
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738 |
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739 # after negociations we start the transfer |
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|
740 negociate_dlist.addCallback(lambda dummy: self._callPlugins(XEP_0166.A_START, session, app_method_name=None, elements=False, profile=client.profile)) |
0209f8d35873
plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
741 |
1616
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
742 def _onSessionCb(self, result, client, request, jingle_elt, session): |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
743 client.xmlstream.send(xmlstream.toResponse(request, 'result')) |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
744 |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
745 def _onSessionEb(self, failure_, client, request, jingle_elt, session): |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
746 log.error(u"Error while handling onSessionInfo: {}".format(failure_.value)) |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
747 # XXX: only error managed so far, maybe some applications/transports need more |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
748 self.sendError('feature-not-implemented', None, request, 'unsupported-info', client.profile) |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
749 |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
750 def onSessionInfo(self, client, request, jingle_elt, session): |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
751 """Method called when a session-info action is received from other peer |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
752 |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
753 This method is only called for initiator |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
754 @param client: %(doc_client)s |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
755 @param request(domish.Element): full <iq> request |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
756 @param jingle_elt(domish.Element): the <jingle> element |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
757 @param session(dict): session data |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
758 """ |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
759 if not jingle_elt.children: |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
760 # this is a session ping, see XEP-0166 §6.8 |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
761 client.xmlstream.send(xmlstream.toResponse(request, 'result')) |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
762 return |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
763 |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
764 try: |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
765 # XXX: session-info is most likely only used for application, so we don't call transport plugins |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
766 # if a future transport use it, this behaviour must be adapted |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
767 defers = self._callPlugins(XEP_0166.A_SESSION_INFO, session, 'jingleSessionInfo', None, |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
768 elements=False, force_element=jingle_elt, profile=client.profile) |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
769 except exceptions.NotFound as e: |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
770 self._onSessionEb(failure.Failure(e), client, request, jingle_elt, session) |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
771 return |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
772 |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
773 dlist = defer.DeferredList(defers, fireOnOneErrback=True) |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
774 dlist.addCallback(self._onSessionCb, client, request, jingle_elt, session) |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
775 dlist.addErrback(self._onSessionCb, client, request, jingle_elt, session) |
1e05b776a55b
plugin XEP-0166: session-info action handling
Goffi <goffi@goffi.org>
parents:
1615
diff
changeset
|
776 |
1556
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
777 def onTransportInfo(self, client, request, jingle_elt, session): |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
778 """Method called when a transport-info action is received from other peer |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
779 |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
780 The request is parsed, and jingleHandler is called on concerned transport plugin(s) |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
781 @param client: %(doc_client)s |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
782 @param request(domish.Element): full <iq> request |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
783 @param jingle_elt(domish.Element): the <jingle> element |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
784 @param session(dict): session data |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
785 """ |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
786 log.debug(u"Jingle session {} has been accepted".format(session['id'])) |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
787 |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
788 try: |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
789 self._parseElements(jingle_elt, session, request, client, with_application=False) |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
790 except exceptions.CancelError: |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
791 return |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
792 |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
793 # The parsing was OK, we send the <iq> result |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
794 client.xmlstream.send(xmlstream.toResponse(request, 'result')) |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
795 |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
796 for content_name, content_data in session['contents'].iteritems(): |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
797 try: |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
798 transport_elt = content_data.pop('transport_elt') |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
799 except KeyError: |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
800 continue |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
801 else: |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
802 content_data['transport'].handler.jingleHandler(XEP_0166.A_TRANSPORT_INFO, session, content_name, transport_elt, client.profile) |
cbfbe028d099
plugin XEP-0166, XEP-0234, XEP-0261:
Goffi <goffi@goffi.org>
parents:
1523
diff
changeset
|
803 |
1523
0209f8d35873
plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
804 |
0209f8d35873
plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
805 class XEP_0166_handler(xmlstream.XMPPHandler): |
0209f8d35873
plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
806 implements(iwokkel.IDisco) |
0209f8d35873
plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
807 |
0209f8d35873
plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
808 def __init__(self, plugin_parent): |
0209f8d35873
plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
809 self.plugin_parent = plugin_parent |
0209f8d35873
plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
810 |
0209f8d35873
plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
811 def connectionInitialized(self): |
0209f8d35873
plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
812 self.xmlstream.addObserver(JINGLE_REQUEST, self.plugin_parent._onJingleRequest, profile=self.parent.profile) |
0209f8d35873
plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
813 |
0209f8d35873
plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
814 def getDiscoInfo(self, requestor, target, nodeIdentifier=''): |
0209f8d35873
plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
815 return [disco.DiscoFeature(NS_JINGLE)] |
0209f8d35873
plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
816 |
0209f8d35873
plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
817 def getDiscoItems(self, requestor, target, nodeIdentifier=''): |
0209f8d35873
plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
818 return [] |