Mercurial > libervia-backend
annotate sat/plugins/plugin_xep_0166.py @ 2764:92af49cde255
jp (base): MAM and RSM arguments can now be used for pubsub commands:
- RSM and MAM args arguments have been added to pubsub group, and activated when multiple items are possible
- /!\ --max-items (i.e. pubsub original max) short option has been change for -M, and -m is now used for RSM max
- pubsub/search -m option has been renamed -M for same reason as above
- pubsub/search -o option has been replaced by -k (for keep), to avoid conflict with order-by (and long version is now --node-max)
author | Goffi <goffi@goffi.org> |
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date | Fri, 11 Jan 2019 10:18:02 +0100 |
parents | 56f94936df1e |
children | 378188abe941 |
rev | line source |
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1934
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1 #!/usr/bin/env python2 |
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2 # -*- coding: utf-8 -*- |
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3 |
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4 # SAT plugin for Jingle (XEP-0166) |
2483 | 5 # Copyright (C) 2009-2018 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 |
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25 log = getLogger(__name__) |
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26 from sat.core import exceptions |
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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 from twisted.internet import reactor |
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30 from wokkel import disco, iwokkel |
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31 from twisted.words.protocols.jabber import error |
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32 from twisted.words.protocols.jabber import xmlstream |
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33 from twisted.python import failure |
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34 from collections import namedtuple |
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35 import uuid |
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36 import time |
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37 |
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38 from zope.interface import implements |
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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 C.PI_NAME: "Jingle", |
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52 C.PI_IMPORT_NAME: "XEP-0166", |
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53 C.PI_TYPE: "XEP", |
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54 C.PI_MODES: C.PLUG_MODE_BOTH, |
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55 C.PI_PROTOCOLS: ["XEP-0166"], |
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56 C.PI_MAIN: "XEP_0166", |
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57 C.PI_HANDLER: "yes", |
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58 C.PI_DESCRIPTION: _("""Implementation of Jingle"""), |
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59 } |
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60 |
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61 |
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62 ApplicationData = namedtuple("ApplicationData", ("namespace", "handler")) |
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63 TransportData = namedtuple("TransportData", ("namespace", "handler", "priority")) |
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64 |
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65 |
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66 class XEP_0166(object): |
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67 ROLE_INITIATOR = "initiator" |
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68 ROLE_RESPONDER = "responder" |
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69 TRANSPORT_DATAGRAM = "UDP" |
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70 TRANSPORT_STREAMING = "TCP" |
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71 REASON_SUCCESS = "success" |
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72 REASON_DECLINE = "decline" |
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73 REASON_FAILED_APPLICATION = "failed-application" |
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74 REASON_FAILED_TRANSPORT = "failed-transport" |
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75 REASON_CONNECTIVITY_ERROR = "connectivity-error" |
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76 A_SESSION_INITIATE = "session-initiate" |
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77 A_SESSION_ACCEPT = "session-accept" |
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78 A_SESSION_TERMINATE = "session-terminate" |
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79 A_SESSION_INFO = "session-info" |
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80 A_TRANSPORT_REPLACE = "transport-replace" |
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81 A_TRANSPORT_ACCEPT = "transport-accept" |
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82 A_TRANSPORT_REJECT = "transport-reject" |
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83 A_TRANSPORT_INFO = "transport-info" |
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84 # non standard actions |
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85 A_PREPARE_INITIATOR = "prepare-initiator" # initiator must prepare tranfer |
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86 A_PREPARE_RESPONDER = "prepare-responder" # responder must prepare tranfer |
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87 A_ACCEPTED_ACK = ( |
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88 "accepted-ack" |
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89 ) # session accepted ack has been received from initiator |
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90 A_START = "start" # application can start |
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91 A_DESTROY = ( |
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92 "destroy" |
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93 ) # called when a transport is destroyed (e.g. because it is remplaced). Used to do cleaning operations |
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94 |
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95 def __init__(self, host): |
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96 log.info(_("plugin Jingle initialization")) |
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97 self.host = host |
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98 self._applications = {} # key: namespace, value: application data |
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99 self._transports = {} # key: namespace, value: transport data |
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100 # we also keep transports by type, they are then sorted by priority |
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101 self._type_transports = { |
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102 XEP_0166.TRANSPORT_DATAGRAM: [], |
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103 XEP_0166.TRANSPORT_STREAMING: [], |
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104 } |
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105 |
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106 def profileConnected(self, client): |
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107 client.jingle_sessions = {} # key = sid, value = session_data |
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108 |
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109 def getHandler(self, client): |
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110 return XEP_0166_handler(self) |
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111 |
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112 def _delSession(self, client, sid): |
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113 try: |
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114 del client.jingle_sessions[sid] |
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115 except KeyError: |
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116 log.debug(u"Jingle session id [{}] is unknown, nothing to delete".format(sid)) |
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117 else: |
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118 log.debug(u"Jingle session id [{}] deleted".format(sid)) |
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119 |
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120 ## helpers methods to build stanzas ## |
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121 |
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122 def _buildJingleElt(self, client, session, action): |
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123 iq_elt = client.IQ("set") |
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124 iq_elt["from"] = client.jid.full() |
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125 iq_elt["to"] = session["peer_jid"].full() |
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126 jingle_elt = iq_elt.addElement("jingle", NS_JINGLE) |
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127 jingle_elt["sid"] = session["id"] |
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128 jingle_elt["action"] = action |
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129 return iq_elt, jingle_elt |
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130 |
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131 def sendError(self, client, error_condition, sid, request, jingle_condition=None): |
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132 """Send error stanza |
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133 |
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134 @param error_condition: one of twisted.words.protocols.jabber.error.STANZA_CONDITIONS keys |
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135 @param sid(unicode,None): jingle session id, or None, if session must not be destroyed |
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136 @param request(domish.Element): original request |
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137 @param jingle_condition(None, unicode): if not None, additional jingle-specific error information |
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138 """ |
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139 iq_elt = error.StanzaError(error_condition).toResponse(request) |
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140 if jingle_condition is not None: |
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141 iq_elt.error.addElement((NS_JINGLE_ERROR, jingle_condition)) |
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142 if error.STANZA_CONDITIONS[error_condition]["type"] == "cancel" and sid: |
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143 self._delSession(client, sid) |
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144 log.warning( |
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145 u"Error while managing jingle session, cancelling: {condition}".format( |
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146 error_condition |
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147 ) |
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148 ) |
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149 client.send(iq_elt) |
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150 |
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151 def _terminateEb(self, failure_): |
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152 log.warning(_(u"Error while terminating session: {msg}").format(msg=failure_)) |
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153 |
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154 def terminate(self, client, reason, session): |
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155 """Terminate the session |
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156 |
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157 send the session-terminate action, and delete the session data |
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158 @param reason(unicode, list[domish.Element]): if unicode, will be transformed to an element |
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159 if a list of element, add them as children of the <reason/> element |
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160 @param session(dict): data of the session |
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161 """ |
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162 iq_elt, jingle_elt = self._buildJingleElt( |
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163 client, session, XEP_0166.A_SESSION_TERMINATE |
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164 ) |
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165 reason_elt = jingle_elt.addElement("reason") |
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166 if isinstance(reason, basestring): |
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167 reason_elt.addElement(reason) |
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168 else: |
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169 for elt in reason: |
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170 reason_elt.addChild(elt) |
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171 self._delSession(client, session["id"]) |
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172 d = iq_elt.send() |
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173 d.addErrback(self._terminateEb) |
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174 return d |
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175 |
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176 ## errors which doesn't imply a stanza sending ## |
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177 |
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178 def _iqError(self, failure_, sid, client): |
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179 """Called when we got an <iq/> error |
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180 |
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181 @param failure_(failure.Failure): the exceptions raised |
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182 @param sid(unicode): jingle session id |
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183 """ |
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184 log.warning( |
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185 u"Error while sending jingle <iq/> stanza: {failure_}".format( |
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186 failure_=failure_.value |
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187 ) |
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188 ) |
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189 self._delSession(client, sid) |
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190 |
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191 def _jingleErrorCb(self, fail, sid, request, client): |
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192 """Called when something is going wrong while parsing jingle request |
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193 |
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194 The error condition depend of the exceptions raised: |
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195 exceptions.DataError raise a bad-request condition |
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196 @param fail(failure.Failure): the exceptions raised |
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197 @param sid(unicode): jingle session id |
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198 @param request(domsih.Element): jingle request |
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199 @param client: %(doc_client)s |
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200 """ |
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201 log.warning("Error while processing jingle request") |
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202 if isinstance(fail, exceptions.DataError): |
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203 self.sendError(client, "bad-request", sid, request) |
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204 else: |
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205 log.error("Unmanaged jingle exception") |
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206 self._delSession(client, sid) |
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207 raise fail |
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208 |
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209 ## methods used by other plugins ## |
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210 |
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211 def registerApplication(self, namespace, handler): |
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212 """Register an application plugin |
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213 |
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214 @param namespace(unicode): application namespace managed by the plugin |
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215 @param handler(object): instance of a class which manage the application. |
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216 May have the following methods: |
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217 - requestConfirmation(session, desc_elt, client): |
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218 - if present, it is called on when session must be accepted. |
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219 - if it return True the session is accepted, else rejected. |
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220 A Deferred can be returned |
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221 - if not present, a generic accept dialog will be used |
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222 - jingleSessionInit(client, self, session, content_name[, *args, **kwargs]): must return the domish.Element used for initial content |
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223 - jingleHandler(client, self, action, session, content_name, transport_elt): |
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224 called on several action to negociate the application or transport |
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225 - jingleTerminate: called on session terminate, with reason_elt |
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226 May be used to clean session |
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227 """ |
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228 if namespace in self._applications: |
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229 raise exceptions.ConflictError( |
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230 u"Trying to register already registered namespace {}".format(namespace) |
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231 ) |
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232 self._applications[namespace] = ApplicationData( |
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233 namespace=namespace, handler=handler |
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234 ) |
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235 log.debug(u"new jingle application registered") |
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236 |
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237 def registerTransport(self, namespace, transport_type, handler, priority=0): |
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238 """Register a transport plugin |
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239 |
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240 @param namespace(unicode): the XML namespace used for this transport |
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241 @param transport_type(unicode): type of transport to use (see XEP-0166 §8) |
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242 @param handler(object): instance of a class which manage the application. |
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243 Must have the following methods: |
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244 - jingleSessionInit(client, self, session, content_name[, *args, **kwargs]): must return the domish.Element used for initial content |
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245 - jingleHandler(client, self, action, session, content_name, transport_elt): |
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246 called on several action to negociate the application or transport |
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247 @param priority(int): priority of this transport |
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248 """ |
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249 assert transport_type in ( |
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250 XEP_0166.TRANSPORT_DATAGRAM, |
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251 XEP_0166.TRANSPORT_STREAMING, |
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252 ) |
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253 if namespace in self._transports: |
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254 raise exceptions.ConflictError( |
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255 u"Trying to register already registered namespace {}".format(namespace) |
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256 ) |
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257 transport_data = TransportData( |
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258 namespace=namespace, handler=handler, priority=priority |
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259 ) |
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260 self._type_transports[transport_type].append(transport_data) |
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261 self._type_transports[transport_type].sort( |
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262 key=lambda transport_data: transport_data.priority, reverse=True |
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263 ) |
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264 self._transports[namespace] = transport_data |
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265 log.debug(u"new jingle transport registered") |
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266 |
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267 @defer.inlineCallbacks |
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268 def transportReplace(self, client, transport_ns, session, content_name): |
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269 """Replace a transport |
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270 |
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271 @param transport_ns(unicode): namespace of the new transport to use |
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272 @param session(dict): jingle session data |
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273 @param content_name(unicode): name of the content |
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274 """ |
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275 # XXX: for now we replace the transport before receiving confirmation from other peer |
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276 # this is acceptable because we terminate the session if transport is rejected. |
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277 # this behavious may change in the future. |
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278 content_data = session["contents"][content_name] |
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279 transport_data = content_data["transport_data"] |
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280 try: |
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281 transport = self._transports[transport_ns] |
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282 except KeyError: |
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283 raise exceptions.InternalError(u"Unkown transport") |
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284 yield content_data["transport"].handler.jingleHandler( |
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285 client, XEP_0166.A_DESTROY, session, content_name, None |
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286 ) |
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287 content_data["transport"] = transport |
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288 transport_data.clear() |
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289 |
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290 iq_elt, jingle_elt = self._buildJingleElt( |
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291 client, session, XEP_0166.A_TRANSPORT_REPLACE |
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292 ) |
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293 content_elt = jingle_elt.addElement("content") |
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294 content_elt["name"] = content_name |
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295 content_elt["creator"] = content_data["creator"] |
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296 |
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297 transport_elt = transport.handler.jingleSessionInit(client, session, content_name) |
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298 content_elt.addChild(transport_elt) |
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299 iq_elt.send() |
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300 |
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301 def buildAction(self, client, action, session, content_name): |
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302 """Build an element according to requested action |
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303 |
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304 @param action(unicode): a jingle action (see XEP-0166 §7.2), |
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305 session-* actions are not managed here |
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306 transport-replace is managed in the dedicated [transportReplace] method |
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307 @param session(dict): jingle session data |
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308 @param content_name(unicode): name of the content |
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309 @return (tuple[domish.Element, domish.Element]): parent <iq> element, <transport> or <description> element, according to action |
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310 """ |
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311 # we first build iq, jingle and content element which are the same in every cases |
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312 iq_elt, jingle_elt = self._buildJingleElt(client, session, action) |
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313 # 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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314 content_data = session["contents"][content_name] |
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315 content_elt = jingle_elt.addElement("content") |
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316 content_elt["name"] = content_name |
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317 content_elt["creator"] = content_data["creator"] |
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318 |
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319 if action == XEP_0166.A_TRANSPORT_INFO: |
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320 context_elt = transport_elt = content_elt.addElement( |
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321 "transport", content_data["transport"].namespace |
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322 ) |
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323 transport_elt["sid"] = content_data["transport_data"]["sid"] |
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324 else: |
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325 raise exceptions.InternalError(u"unmanaged action {}".format(action)) |
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326 |
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327 return iq_elt, context_elt |
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328 |
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329 def buildSessionInfo(self, client, session): |
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330 """Build a session-info action |
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331 |
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332 @param session(dict): jingle session data |
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333 @return (tuple[domish.Element, domish.Element]): parent <iq> element, <jingle> element |
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334 """ |
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335 return self._buildJingleElt(client, session, XEP_0166.A_SESSION_INFO) |
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336 |
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337 @defer.inlineCallbacks |
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338 def initiate(self, client, peer_jid, contents): |
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339 """Send a session initiation request |
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340 |
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341 @param peer_jid(jid.JID): jid to establith session with |
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342 @param contents(list[dict]): list of contents to use: |
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343 The dict must have the following keys: |
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344 - app_ns(unicode): namespace of the application |
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345 the following keys are optional: |
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346 - transport_type(unicode): type of transport to use (see XEP-0166 §8) |
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347 default to TRANSPORT_STREAMING |
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348 - name(unicode): name of the content |
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349 - senders(unicode): One of XEP_0166.ROLE_INITIATOR, XEP_0166.ROLE_RESPONDER, both or none |
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350 default to BOTH (see XEP-0166 §7.3) |
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351 - app_args(list): args to pass to the application plugin |
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352 - app_kwargs(dict): keyword args to pass to the application plugin |
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353 @return D(unicode): jingle session id |
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354 """ |
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355 assert contents # there must be at least one content |
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356 if peer_jid == client.jid: |
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357 raise ValueError(_(u"You can't do a jingle session with yourself")) |
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358 initiator = client.jid |
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359 sid = unicode(uuid.uuid4()) |
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360 # TODO: session cleaning after timeout ? |
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361 session = client.jingle_sessions[sid] = { |
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362 "id": sid, |
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363 "state": STATE_PENDING, |
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364 "initiator": initiator, |
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365 "role": XEP_0166.ROLE_INITIATOR, |
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366 "peer_jid": peer_jid, |
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367 "started": time.time(), |
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368 "contents": {}, |
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369 } |
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370 iq_elt, jingle_elt = self._buildJingleElt( |
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371 client, session, XEP_0166.A_SESSION_INITIATE |
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372 ) |
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373 jingle_elt["initiator"] = initiator.full() |
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374 |
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375 contents_dict = session["contents"] |
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376 |
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377 for content in contents: |
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378 # we get the application plugin |
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379 app_ns = content["app_ns"] |
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380 try: |
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381 application = self._applications[app_ns] |
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382 except KeyError: |
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383 raise exceptions.InternalError( |
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384 u"No application registered for {}".format(app_ns) |
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385 ) |
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386 |
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387 # and the transport plugin |
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388 transport_type = content.get("transport_type", XEP_0166.TRANSPORT_STREAMING) |
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389 try: |
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390 transport = self._type_transports[transport_type][0] |
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391 except IndexError: |
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392 raise exceptions.InternalError( |
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393 u"No transport registered for {}".format(transport_type) |
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394 ) |
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395 |
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396 # we build the session data |
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397 content_data = { |
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398 "application": application, |
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399 "application_data": {}, |
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400 "transport": transport, |
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401 "transport_data": {}, |
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402 "creator": XEP_0166.ROLE_INITIATOR, |
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403 "senders": content.get("senders", "both"), |
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404 } |
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405 try: |
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406 content_name = content["name"] |
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407 except KeyError: |
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408 content_name = unicode(uuid.uuid4()) |
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409 else: |
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410 if content_name in contents_dict: |
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411 raise exceptions.InternalError( |
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412 "There is already a content with this name" |
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413 ) |
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414 contents_dict[content_name] = content_data |
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415 |
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416 # we construct the content element |
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417 content_elt = jingle_elt.addElement("content") |
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418 content_elt["creator"] = content_data["creator"] |
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419 content_elt["name"] = content_name |
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420 try: |
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421 content_elt["senders"] = content["senders"] |
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422 except KeyError: |
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423 pass |
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424 |
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425 # then the description element |
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426 app_args = content.get("app_args", []) |
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427 app_kwargs = content.get("app_kwargs", {}) |
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428 desc_elt = yield application.handler.jingleSessionInit( |
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429 client, session, content_name, *app_args, **app_kwargs |
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430 ) |
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431 content_elt.addChild(desc_elt) |
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432 |
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433 # and the transport one |
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434 transport_elt = yield transport.handler.jingleSessionInit( |
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435 client, session, content_name |
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436 ) |
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437 content_elt.addChild(transport_elt) |
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438 |
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439 try: |
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440 yield iq_elt.send() |
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441 except Exception as e: |
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442 failure_ = failure.Failure(e) |
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443 self._iqError(failure_, sid, client) |
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444 raise failure_ |
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445 |
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446 def delayedContentTerminate(self, *args, **kwargs): |
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447 """Put contentTerminate in queue but don't execute immediately |
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448 |
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449 This is used to terminate a content inside a handler, to avoid modifying contents |
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450 """ |
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451 reactor.callLater(0, self.contentTerminate, *args, **kwargs) |
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452 |
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453 def contentTerminate(self, client, session, content_name, reason=REASON_SUCCESS): |
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454 """Terminate and remove a content |
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455 |
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456 if there is no more content, then session is terminated |
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457 @param session(dict): jingle session |
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458 @param content_name(unicode): name of the content terminated |
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459 @param reason(unicode): reason of the termination |
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460 """ |
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461 contents = session["contents"] |
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462 del contents[content_name] |
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463 if not contents: |
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464 self.terminate(client, reason, session) |
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465 |
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466 ## defaults methods called when plugin doesn't have them ## |
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467 |
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468 def jingleRequestConfirmationDefault( |
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469 self, client, action, session, content_name, desc_elt |
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470 ): |
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471 """This method request confirmation for a jingle session""" |
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472 log.debug(u"Using generic jingle confirmation method") |
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473 return xml_tools.deferConfirm( |
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474 self.host, |
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475 _(CONFIRM_TXT).format(entity=session["peer_jid"].full()), |
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476 _("Confirm Jingle session"), |
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477 profile=client.profile, |
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478 ) |
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479 |
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480 ## jingle events ## |
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481 |
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482 def _onJingleRequest(self, request, client): |
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483 """Called when any jingle request is received |
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484 |
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485 The request will then be dispatched to appropriate method |
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486 according to current state |
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487 @param request(domish.Element): received IQ request |
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488 """ |
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489 request.handled = True |
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490 jingle_elt = request.elements(NS_JINGLE, "jingle").next() |
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491 |
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492 # first we need the session id |
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493 try: |
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494 sid = jingle_elt["sid"] |
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495 if not sid: |
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496 raise KeyError |
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497 except KeyError: |
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498 log.warning(u"Received jingle request has no sid attribute") |
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499 self.sendError(client, "bad-request", None, request) |
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500 return |
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501 |
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502 # then the action |
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503 try: |
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504 action = jingle_elt["action"] |
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505 if not action: |
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506 raise KeyError |
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507 except KeyError: |
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508 log.warning(u"Received jingle request has no action") |
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509 self.sendError(client, "bad-request", None, request) |
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510 return |
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511 |
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512 peer_jid = jid.JID(request["from"]) |
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513 |
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514 # we get or create the session |
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515 try: |
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516 session = client.jingle_sessions[sid] |
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517 except KeyError: |
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518 if action == XEP_0166.A_SESSION_INITIATE: |
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519 pass |
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520 elif action == XEP_0166.A_SESSION_TERMINATE: |
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521 log.debug( |
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522 u"ignoring session terminate action (inexisting session id): {request_id} [{profile}]".format( |
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523 request_id=sid, profile=client.profile |
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524 ) |
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525 ) |
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526 return |
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527 else: |
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528 log.warning( |
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529 u"Received request for an unknown session id: {request_id} [{profile}]".format( |
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530 request_id=sid, profile=client.profile |
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531 ) |
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532 ) |
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533 self.sendError(client, "item-not-found", None, request, "unknown-session") |
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534 return |
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535 |
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536 session = client.jingle_sessions[sid] = { |
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537 "id": sid, |
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538 "state": STATE_PENDING, |
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539 "initiator": peer_jid, |
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540 "role": XEP_0166.ROLE_RESPONDER, |
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541 "peer_jid": peer_jid, |
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542 "started": time.time(), |
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543 } |
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544 else: |
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545 if session["peer_jid"] != peer_jid: |
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546 log.warning( |
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547 u"sid conflict ({}), the jid doesn't match. Can be a collision, a hack attempt, or a bad sid generation".format( |
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548 sid |
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549 ) |
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550 ) |
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551 self.sendError(client, "service-unavailable", sid, request) |
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552 return |
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553 if session["id"] != sid: |
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554 log.error(u"session id doesn't match") |
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555 self.sendError(client, "service-unavailable", sid, request) |
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556 raise exceptions.InternalError |
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557 |
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558 if action == XEP_0166.A_SESSION_INITIATE: |
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559 self.onSessionInitiate(client, request, jingle_elt, session) |
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560 elif action == XEP_0166.A_SESSION_TERMINATE: |
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561 self.onSessionTerminate(client, request, jingle_elt, session) |
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562 elif action == XEP_0166.A_SESSION_ACCEPT: |
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563 self.onSessionAccept(client, request, jingle_elt, session) |
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564 elif action == XEP_0166.A_SESSION_INFO: |
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565 self.onSessionInfo(client, request, jingle_elt, session) |
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566 elif action == XEP_0166.A_TRANSPORT_INFO: |
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567 self.onTransportInfo(client, request, jingle_elt, session) |
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568 elif action == XEP_0166.A_TRANSPORT_REPLACE: |
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569 self.onTransportReplace(client, request, jingle_elt, session) |
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570 elif action == XEP_0166.A_TRANSPORT_ACCEPT: |
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571 self.onTransportAccept(client, request, jingle_elt, session) |
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572 elif action == XEP_0166.A_TRANSPORT_REJECT: |
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573 self.onTransportReject(client, request, jingle_elt, session) |
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574 else: |
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575 raise exceptions.InternalError(u"Unknown action {}".format(action)) |
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576 |
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577 ## Actions callbacks ## |
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578 |
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579 def _parseElements( |
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580 self, |
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581 jingle_elt, |
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582 session, |
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583 request, |
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584 client, |
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585 new=False, |
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586 creator=ROLE_INITIATOR, |
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587 with_application=True, |
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588 with_transport=True, |
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589 ): |
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590 """Parse contents elements and fill contents_dict accordingly |
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591 |
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592 after the parsing, contents_dict will containt handlers, "desc_elt" and "transport_elt" |
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593 @param jingle_elt(domish.Element): parent <jingle> element, containing one or more <content> |
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594 @param session(dict): session data |
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595 @param request(domish.Element): the whole request |
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596 @param client: %(doc_client)s |
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597 @param new(bool): True if the content is new and must be created, |
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598 else the content must exists, and session data will be filled |
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599 @param creator(unicode): only used if new is True: creating pear (see § 7.3) |
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600 @param with_application(bool): if True, raise an error if there is no <description> element else ignore it |
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601 @param with_transport(bool): if True, raise an error if there is no <transport> element else ignore it |
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602 @raise exceptions.CancelError: the error is treated and the calling method can cancel the treatment (i.e. return) |
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603 """ |
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604 contents_dict = session["contents"] |
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605 content_elts = jingle_elt.elements(NS_JINGLE, "content") |
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606 |
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|
607 for content_elt in content_elts: |
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608 name = content_elt["name"] |
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609 |
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610 if new: |
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611 # the content must not exist, we check it |
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|
612 if not name or name in contents_dict: |
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613 self.sendError(client, "bad-request", session["id"], request) |
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614 raise exceptions.CancelError |
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615 content_data = contents_dict[name] = { |
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616 "creator": creator, |
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617 "senders": content_elt.attributes.get("senders", "both"), |
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618 } |
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619 else: |
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620 # the content must exist, we check it |
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621 try: |
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|
622 content_data = contents_dict[name] |
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623 except KeyError: |
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624 log.warning(u"Other peer try to access an unknown content") |
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625 self.sendError(client, "bad-request", session["id"], request) |
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626 raise exceptions.CancelError |
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|
627 |
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628 # application |
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629 if with_application: |
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630 desc_elt = content_elt.description |
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631 if not desc_elt: |
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632 self.sendError(client, "bad-request", session["id"], request) |
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633 raise exceptions.CancelError |
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634 |
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635 if new: |
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636 # the content is new, we need to check and link the application |
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637 app_ns = desc_elt.uri |
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638 if not app_ns or app_ns == NS_JINGLE: |
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639 self.sendError(client, "bad-request", session["id"], request) |
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640 raise exceptions.CancelError |
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641 |
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642 try: |
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643 application = self._applications[app_ns] |
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644 except KeyError: |
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645 log.warning( |
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646 u"Unmanaged application namespace [{}]".format(app_ns) |
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647 ) |
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648 self.sendError( |
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649 client, "service-unavailable", session["id"], request |
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650 ) |
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651 raise exceptions.CancelError |
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652 |
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653 content_data["application"] = application |
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654 content_data["application_data"] = {} |
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655 else: |
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656 # the content exists, we check that we have not a former desc_elt |
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657 if "desc_elt" in content_data: |
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|
658 raise exceptions.InternalError( |
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659 u"desc_elt should not exist at this point" |
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660 ) |
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661 |
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662 content_data["desc_elt"] = desc_elt |
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663 |
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|
664 # transport |
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|
665 if with_transport: |
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666 transport_elt = content_elt.transport |
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667 if not transport_elt: |
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668 self.sendError(client, "bad-request", session["id"], request) |
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669 raise exceptions.CancelError |
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670 |
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671 if new: |
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672 # the content is new, we need to check and link the transport |
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673 transport_ns = transport_elt.uri |
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674 if not app_ns or app_ns == NS_JINGLE: |
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675 self.sendError(client, "bad-request", session["id"], request) |
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676 raise exceptions.CancelError |
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677 |
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678 try: |
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679 transport = self._transports[transport_ns] |
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680 except KeyError: |
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681 raise exceptions.InternalError( |
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682 u"No transport registered for namespace {}".format( |
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683 transport_ns |
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684 ) |
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685 ) |
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686 content_data["transport"] = transport |
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687 content_data["transport_data"] = {} |
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688 else: |
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689 # the content exists, we check that we have not a former transport_elt |
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690 if "transport_elt" in content_data: |
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691 raise exceptions.InternalError( |
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692 u"transport_elt should not exist at this point" |
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693 ) |
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694 |
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695 content_data["transport_elt"] = transport_elt |
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696 |
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697 def _ignore(self, client, action, session, content_name, elt): |
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698 """Dummy method used when not exception must be raised if a method is not implemented in _callPlugins |
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699 |
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700 must be used as app_default_cb and/or transp_default_cb |
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701 """ |
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702 return elt |
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703 |
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704 def _callPlugins( |
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705 self, |
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706 client, |
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707 action, |
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|
708 session, |
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709 app_method_name="jingleHandler", |
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710 transp_method_name="jingleHandler", |
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711 app_default_cb=None, |
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712 transp_default_cb=None, |
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|
713 delete=True, |
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|
714 elements=True, |
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|
715 force_element=None, |
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|
716 ): |
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|
717 """Call application and transport plugin methods for all contents |
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|
718 |
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|
719 @param action(unicode): jingle action name |
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|
720 @param session(dict): jingle session data |
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|
721 @param app_method_name(unicode, None): name of the method to call for applications |
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|
722 None to ignore |
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|
723 @param transp_method_name(unicode, None): name of the method to call for transports |
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|
724 None to ignore |
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|
725 @param app_default_cb(callable, None): default callback to use if plugin has not app_method_name |
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|
726 None to raise an exception instead |
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|
727 @param transp_default_cb(callable, None): default callback to use if plugin has not transp_method_name |
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|
728 None to raise an exception instead |
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changeset
|
729 @param delete(bool): if True, remove desc_elt and transport_elt from session |
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|
730 ignored if elements is False |
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|
731 @param elements(bool): True if elements(desc_elt and tranport_elt) must be managed |
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|
732 must be True if _callPlugins is used in a request, and False if it used after a request |
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|
733 (i.e. on <iq> result or error) |
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|
734 @param force_element(None, domish.Element, object): if elements is False, it is used as element parameter |
1616
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|
735 else it is ignored |
1523
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|
736 @return (list[defer.Deferred]): list of launched Deferred |
1616
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|
737 @raise exceptions.NotFound: method is not implemented |
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|
738 """ |
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|
739 contents_dict = session["contents"] |
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|
740 defers_list = [] |
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|
741 for content_name, content_data in contents_dict.iteritems(): |
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|
742 for method_name, handler_key, default_cb, elt_name in ( |
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|
743 (app_method_name, "application", app_default_cb, "desc_elt"), |
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|
744 (transp_method_name, "transport", transp_default_cb, "transport_elt"), |
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|
745 ): |
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|
746 if method_name is None: |
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changeset
|
747 continue |
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|
748 |
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|
749 handler = content_data[handler_key].handler |
1523
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|
750 try: |
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|
751 method = getattr(handler, method_name) |
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|
752 except AttributeError: |
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|
753 if default_cb is None: |
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|
754 raise exceptions.NotFound( |
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|
755 u"{} not implemented !".format(method_name) |
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|
756 ) |
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|
757 else: |
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|
758 method = default_cb |
1616
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|
759 if elements: |
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|
760 elt = content_data.pop(elt_name) if delete else content_data[elt_name] |
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|
761 else: |
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|
762 elt = force_element |
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|
763 d = defer.maybeDeferred( |
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|
764 method, client, action, session, content_name, elt |
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|
765 ) |
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changeset
|
766 defers_list.append(d) |
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|
767 |
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changeset
|
768 return defers_list |
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|
769 |
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changeset
|
770 def onSessionInitiate(self, client, request, jingle_elt, session): |
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|
771 """Called on session-initiate action |
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|
772 |
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parents:
diff
changeset
|
773 The "jingleRequestConfirmation" method of each application will be called |
0209f8d35873
plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
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parents:
diff
changeset
|
774 (or self.jingleRequestConfirmationDefault if the former doesn't exist). |
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parents:
diff
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|
775 The session is only accepted if all application are confirmed. |
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776 The application must manage itself multiple contents scenari (e.g. audio/video). |
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777 @param client: %(doc_client)s |
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778 @param request(domish.Element): full request |
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779 @param jingle_elt(domish.Element): <jingle> element |
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780 @param session(dict): session data |
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781 """ |
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782 if "contents" in session: |
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783 raise exceptions.InternalError( |
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784 "Contents dict should not already exist at this point" |
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785 ) |
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786 session["contents"] = contents_dict = {} |
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787 |
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788 try: |
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789 self._parseElements( |
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790 jingle_elt, session, request, client, True, XEP_0166.ROLE_INITIATOR |
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791 ) |
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792 except exceptions.CancelError: |
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793 return |
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794 |
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795 if not contents_dict: |
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796 # there MUST be at least one content |
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797 self.sendError(client, "bad-request", session["id"], request) |
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798 return |
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799 |
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800 # at this point we can send the <iq/> result to confirm reception of the request |
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801 client.send(xmlstream.toResponse(request, "result")) |
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802 |
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803 # we now request each application plugin confirmation |
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804 # and if all are accepted, we can accept the session |
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805 confirm_defers = self._callPlugins( |
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806 client, |
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807 XEP_0166.A_SESSION_INITIATE, |
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808 session, |
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809 "jingleRequestConfirmation", |
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810 None, |
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811 self.jingleRequestConfirmationDefault, |
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812 delete=False, |
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813 ) |
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814 |
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815 confirm_dlist = defer.gatherResults(confirm_defers) |
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816 confirm_dlist.addCallback(self._confirmationCb, session, jingle_elt, client) |
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817 confirm_dlist.addErrback(self._jingleErrorCb, session["id"], request, client) |
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818 |
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819 def _confirmationCb(self, confirm_results, session, jingle_elt, client): |
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820 """Method called when confirmation from user has been received |
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821 |
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822 This method is only called for the responder |
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823 @param confirm_results(list[bool]): all True if session is accepted |
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824 @param session(dict): session data |
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825 @param jingle_elt(domish.Element): jingle data of this session |
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826 @param client: %(doc_client)s |
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827 """ |
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828 confirmed = all(confirm_results) |
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829 if not confirmed: |
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830 return self.terminate(client, XEP_0166.REASON_DECLINE, session) |
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831 |
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832 iq_elt, jingle_elt = self._buildJingleElt( |
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833 client, session, XEP_0166.A_SESSION_ACCEPT |
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834 ) |
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835 jingle_elt["responder"] = client.jid.full() |
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836 |
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837 # contents |
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838 |
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839 def addElement(domish_elt, content_elt): |
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840 content_elt.addChild(domish_elt) |
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841 |
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842 defers_list = [] |
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843 |
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844 for content_name, content_data in session["contents"].iteritems(): |
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845 content_elt = jingle_elt.addElement("content") |
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846 content_elt["creator"] = XEP_0166.ROLE_INITIATOR |
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847 content_elt["name"] = content_name |
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848 |
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849 application = content_data["application"] |
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850 app_session_accept_cb = application.handler.jingleHandler |
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851 |
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852 app_d = defer.maybeDeferred( |
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853 app_session_accept_cb, |
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854 client, |
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855 XEP_0166.A_SESSION_INITIATE, |
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856 session, |
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857 content_name, |
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858 content_data.pop("desc_elt"), |
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859 ) |
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860 app_d.addCallback(addElement, content_elt) |
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861 defers_list.append(app_d) |
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862 |
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863 transport = content_data["transport"] |
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864 transport_session_accept_cb = transport.handler.jingleHandler |
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865 |
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866 transport_d = defer.maybeDeferred( |
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867 transport_session_accept_cb, |
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868 client, |
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869 XEP_0166.A_SESSION_INITIATE, |
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870 session, |
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871 content_name, |
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872 content_data.pop("transport_elt"), |
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873 ) |
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874 transport_d.addCallback(addElement, content_elt) |
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875 defers_list.append(transport_d) |
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876 |
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877 d_list = defer.DeferredList(defers_list) |
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878 d_list.addCallback( |
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|
879 lambda dummy: self._callPlugins( |
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880 client, |
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|
881 XEP_0166.A_PREPARE_RESPONDER, |
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882 session, |
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883 app_method_name=None, |
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884 elements=False, |
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885 ) |
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886 ) |
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887 d_list.addCallback(lambda dummy: iq_elt.send()) |
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888 |
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889 def changeState(dummy, session): |
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890 session["state"] = STATE_ACTIVE |
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|
891 |
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892 d_list.addCallback(changeState, session) |
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893 d_list.addCallback( |
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894 lambda dummy: self._callPlugins( |
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895 client, XEP_0166.A_ACCEPTED_ACK, session, elements=False |
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896 ) |
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897 ) |
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898 d_list.addErrback(self._iqError, session["id"], client) |
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899 return d_list |
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900 |
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901 def onSessionTerminate(self, client, request, jingle_elt, session): |
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plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
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|
902 # TODO: check reason, display a message to user if needed |
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903 log.debug("Jingle Session {} terminated".format(session["id"])) |
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904 try: |
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905 reason_elt = jingle_elt.elements(NS_JINGLE, "reason").next() |
1754
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|
906 except StopIteration: |
2502
7ad5f2c4e34a
XEP-0065,XEP-0096,XEP-0166,XEP-0235,XEP-0300: file transfer improvments:
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|
907 log.warning(u"No reason given for session termination") |
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908 reason_elt = jingle_elt.addElement("reason") |
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909 |
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910 terminate_defers = self._callPlugins( |
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911 client, |
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912 XEP_0166.A_SESSION_TERMINATE, |
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|
913 session, |
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914 "jingleTerminate", |
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|
915 "jingleTerminate", |
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|
916 self._ignore, |
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|
917 self._ignore, |
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918 elements=False, |
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919 force_element=reason_elt, |
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920 ) |
1754
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|
921 terminate_dlist = defer.DeferredList(terminate_defers) |
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922 |
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923 terminate_dlist.addCallback(lambda dummy: self._delSession(client, session["id"])) |
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924 client.send(xmlstream.toResponse(request, "result")) |
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|
925 |
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|
926 def onSessionAccept(self, client, request, jingle_elt, session): |
1556
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|
927 """Method called once session is accepted |
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928 |
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|
929 This method is only called for initiator |
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|
930 @param client: %(doc_client)s |
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|
931 @param request(domish.Element): full <iq> request |
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|
932 @param jingle_elt(domish.Element): the <jingle> element |
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|
933 @param session(dict): session data |
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|
934 """ |
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935 log.debug(u"Jingle session {} has been accepted".format(session["id"])) |
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|
936 |
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|
937 try: |
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|
938 self._parseElements(jingle_elt, session, request, client) |
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|
939 except exceptions.CancelError: |
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plugin XEP-0166: (jingle) first draft. Not all actions are managed yet
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|
940 return |
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|
941 |
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|
942 # at this point we can send the <iq/> result to confirm reception of the request |
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943 client.send(xmlstream.toResponse(request, "result")) |
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|
944 # and change the state |
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945 session["state"] = STATE_ACTIVE |
1523
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|
946 |
0209f8d35873
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|
947 negociate_defers = [] |
2489
e2a7bb875957
plugin pipe/stream, file transfert: refactoring and improvments:
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2487
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|
948 negociate_defers = self._callPlugins(client, XEP_0166.A_SESSION_ACCEPT, session) |
1523
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|
949 |
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|
950 negociate_dlist = defer.DeferredList(negociate_defers) |
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|
951 |
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|
952 # after negociations we start the transfer |
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|
953 negociate_dlist.addCallback( |
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|
954 lambda dummy: self._callPlugins( |
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|
955 client, XEP_0166.A_START, session, app_method_name=None, elements=False |
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|
956 ) |
56f94936df1e
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|
957 ) |
1523
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|
958 |
1616
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|
959 def _onSessionCb(self, result, client, request, jingle_elt, session): |
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960 client.send(xmlstream.toResponse(request, "result")) |
1616
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|
961 |
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|
962 def _onSessionEb(self, failure_, client, request, jingle_elt, session): |
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|
963 log.error(u"Error while handling onSessionInfo: {}".format(failure_.value)) |
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|
964 # XXX: only error managed so far, maybe some applications/transports need more |
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|
965 self.sendError( |
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|
966 client, "feature-not-implemented", None, request, "unsupported-info" |
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|
967 ) |
1616
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|
968 |
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diff
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|
969 def onSessionInfo(self, client, request, jingle_elt, session): |
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|
970 """Method called when a session-info action is received from other peer |
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|
971 |
1e05b776a55b
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|
972 This method is only called for initiator |
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|
973 @param client: %(doc_client)s |
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|
974 @param request(domish.Element): full <iq> request |
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|
975 @param jingle_elt(domish.Element): the <jingle> element |
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|
976 @param session(dict): session data |
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|
977 """ |
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|
978 if not jingle_elt.children: |
1e05b776a55b
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|
979 # this is a session ping, see XEP-0166 §6.8 |
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|
980 client.send(xmlstream.toResponse(request, "result")) |
1616
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|
981 return |
1e05b776a55b
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1615
diff
changeset
|
982 |
1e05b776a55b
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diff
changeset
|
983 try: |
1e05b776a55b
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changeset
|
984 # XXX: session-info is most likely only used for application, so we don't call transport plugins |
1e05b776a55b
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changeset
|
985 # if a future transport use it, this behaviour must be adapted |
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|
986 defers = self._callPlugins( |
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|
987 client, |
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|
988 XEP_0166.A_SESSION_INFO, |
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|
989 session, |
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|
990 "jingleSessionInfo", |
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|
991 None, |
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|
992 elements=False, |
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|
993 force_element=jingle_elt, |
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|
994 ) |
1616
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|
995 except exceptions.NotFound as e: |
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changeset
|
996 self._onSessionEb(failure.Failure(e), client, request, jingle_elt, session) |
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|
997 return |
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1615
diff
changeset
|
998 |
1e05b776a55b
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1615
diff
changeset
|
999 dlist = defer.DeferredList(defers, fireOnOneErrback=True) |
1e05b776a55b
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1615
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|
1000 dlist.addCallback(self._onSessionCb, client, request, jingle_elt, session) |
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changeset
|
1001 dlist.addErrback(self._onSessionCb, client, request, jingle_elt, session) |
1e05b776a55b
plugin XEP-0166: session-info action handling
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1615
diff
changeset
|
1002 |
1630
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1003 @defer.inlineCallbacks |
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1004 def onTransportReplace(self, client, request, jingle_elt, session): |
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1005 """A transport change is requested |
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1006 |
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1007 The request is parsed, and jingleHandler is called on concerned transport plugin(s) |
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1008 @param client: %(doc_client)s |
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1009 @param request(domish.Element): full <iq> request |
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1010 @param jingle_elt(domish.Element): the <jingle> element |
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1011 @param session(dict): session data |
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1012 """ |
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1013 log.debug(u"Other peer wants to replace the transport") |
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1014 try: |
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1015 self._parseElements( |
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1016 jingle_elt, session, request, client, with_application=False |
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1017 ) |
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1018 except exceptions.CancelError: |
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1019 defer.returnValue(None) |
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1020 |
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1021 client.send(xmlstream.toResponse(request, "result")) |
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1022 |
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1023 content_name = None |
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1024 to_replace = [] |
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1025 |
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1026 for content_name, content_data in session["contents"].iteritems(): |
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1027 try: |
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1028 transport_elt = content_data.pop("transport_elt") |
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1029 except KeyError: |
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1030 continue |
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1031 transport_ns = transport_elt.uri |
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1032 try: |
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1033 transport = self._transports[transport_ns] |
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1034 except KeyError: |
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1035 log.warning( |
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1036 u"Other peer want to replace current transport with an unknown one: {}".format( |
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1037 transport_ns |
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1038 ) |
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1039 ) |
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1040 content_name = None |
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1041 break |
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1042 to_replace.append((content_name, content_data, transport, transport_elt)) |
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1043 |
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1044 if content_name is None: |
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1045 # wa can't accept the replacement |
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1046 iq_elt, reject_jingle_elt = self._buildJingleElt( |
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1047 client, session, XEP_0166.A_TRANSPORT_REJECT |
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1048 ) |
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1049 for child in jingle_elt.children: |
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1050 reject_jingle_elt.addChild(child) |
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1051 |
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1052 iq_elt.send() |
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1053 defer.returnValue(None) |
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1054 |
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1055 # at this point, everything is alright and we can replace the transport(s) |
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1056 # this is similar to an session-accept action, but for transports only |
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1057 iq_elt, accept_jingle_elt = self._buildJingleElt( |
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1058 client, session, XEP_0166.A_TRANSPORT_ACCEPT |
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1059 ) |
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1060 for content_name, content_data, transport, transport_elt in to_replace: |
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1061 # we can now actually replace the transport |
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1062 yield content_data["transport"].handler.jingleHandler( |
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1063 client, XEP_0166.A_DESTROY, session, content_name, None |
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1064 ) |
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1065 content_data["transport"] = transport |
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1066 content_data["transport_data"].clear() |
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1067 # and build the element |
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1068 content_elt = accept_jingle_elt.addElement("content") |
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1069 content_elt["name"] = content_name |
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1070 content_elt["creator"] = content_data["creator"] |
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1071 # we notify the transport and insert its <transport/> in the answer |
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1072 accept_transport_elt = yield transport.handler.jingleHandler( |
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1073 client, XEP_0166.A_TRANSPORT_REPLACE, session, content_name, transport_elt |
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1074 ) |
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1075 content_elt.addChild(accept_transport_elt) |
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1076 # there is no confirmation needed here, so we can directly prepare it |
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1077 yield transport.handler.jingleHandler( |
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1078 client, XEP_0166.A_PREPARE_RESPONDER, session, content_name, None |
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1079 ) |
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1080 |
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1081 iq_elt.send() |
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1082 |
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1083 def onTransportAccept(self, client, request, jingle_elt, session): |
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1084 """Method called once transport replacement is accepted |
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1085 |
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1086 @param client: %(doc_client)s |
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1087 @param request(domish.Element): full <iq> request |
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1088 @param jingle_elt(domish.Element): the <jingle> element |
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1089 @param session(dict): session data |
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1090 """ |
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1091 log.debug(u"new transport has been accepted") |
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1092 |
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1093 try: |
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1094 self._parseElements( |
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1095 jingle_elt, session, request, client, with_application=False |
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1096 ) |
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1097 except exceptions.CancelError: |
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1098 return |
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1099 |
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1100 # at this point we can send the <iq/> result to confirm reception of the request |
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1101 client.send(xmlstream.toResponse(request, "result")) |
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1102 |
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1103 negociate_defers = [] |
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1104 negociate_defers = self._callPlugins( |
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1105 client, XEP_0166.A_TRANSPORT_ACCEPT, session, app_method_name=None |
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1106 ) |
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1107 |
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1108 negociate_dlist = defer.DeferredList(negociate_defers) |
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1109 |
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1110 # after negociations we start the transfer |
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1111 negociate_dlist.addCallback( |
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1112 lambda dummy: self._callPlugins( |
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1113 client, XEP_0166.A_START, session, app_method_name=None, elements=False |
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1114 ) |
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1115 ) |
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1116 |
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1117 def onTransportReject(self, client, request, jingle_elt, session): |
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1118 """Method called when a transport replacement is refused |
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1119 |
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1120 @param client: %(doc_client)s |
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1121 @param request(domish.Element): full <iq> request |
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1122 @param jingle_elt(domish.Element): the <jingle> element |
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1123 @param session(dict): session data |
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1124 """ |
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1125 # XXX: for now, we terminate the session in case of transport-reject |
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1126 # this behaviour may change in the future |
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1127 self.terminate(client, "failed-transport", session) |
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1128 |
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1129 def onTransportInfo(self, client, request, jingle_elt, session): |
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1130 """Method called when a transport-info action is received from other peer |
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1131 |
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1132 The request is parsed, and jingleHandler is called on concerned transport plugin(s) |
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1133 @param client: %(doc_client)s |
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1134 @param request(domish.Element): full <iq> request |
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1135 @param jingle_elt(domish.Element): the <jingle> element |
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1136 @param session(dict): session data |
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1137 """ |
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1138 log.debug(u"Jingle session {} has been accepted".format(session["id"])) |
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1139 |
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1140 try: |
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1141 self._parseElements( |
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1142 jingle_elt, session, request, client, with_application=False |
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1143 ) |
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1144 except exceptions.CancelError: |
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1145 return |
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1146 |
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1147 # The parsing was OK, we send the <iq> result |
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1148 client.send(xmlstream.toResponse(request, "result")) |
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1149 |
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1150 for content_name, content_data in session["contents"].iteritems(): |
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1151 try: |
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1152 transport_elt = content_data.pop("transport_elt") |
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1153 except KeyError: |
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1154 continue |
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1155 else: |
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1156 content_data["transport"].handler.jingleHandler( |
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1157 client, |
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1158 XEP_0166.A_TRANSPORT_INFO, |
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1159 session, |
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1160 content_name, |
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1161 transport_elt, |
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1162 ) |
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1163 |
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1164 |
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1165 class XEP_0166_handler(xmlstream.XMPPHandler): |
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1166 implements(iwokkel.IDisco) |
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1167 |
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1168 def __init__(self, plugin_parent): |
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1169 self.plugin_parent = plugin_parent |
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1170 |
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1171 def connectionInitialized(self): |
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1172 self.xmlstream.addObserver( |
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1173 JINGLE_REQUEST, self.plugin_parent._onJingleRequest, client=self.parent |
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1174 ) |
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1175 |
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1176 def getDiscoInfo(self, requestor, target, nodeIdentifier=""): |
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1177 return [disco.DiscoFeature(NS_JINGLE)] |
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1178 |
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1179 def getDiscoItems(self, requestor, target, nodeIdentifier=""): |
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1180 return [] |