Mercurial > libervia-backend
annotate sat/plugins/plugin_exp_jingle_stream.py @ 2617:81b70eeb710f
quick_frontend(contact list): refactored update:
update is now called with appropriate constant value (C.UPDATE_ADD, C.UPDATE_DELETE, C.UPDATE_MODIFY and so on) when a widget change visibility according to current options.
Before it was linked to cache only (C.UPDATE_ADD was only called when contact was first added to cache).
This make widget handling in frontends more easy.
Renamed entityToShow to entityVisible, which seems to correspond better.
Started reducing lines lenght to 90 chars as a test. May become the new coding style soon.
author | Goffi <goffi@goffi.org> |
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date | Sun, 24 Jun 2018 21:59:29 +0200 |
parents | 26edcf3a30eb |
children | 56f94936df1e |
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 managing pipes (experimental) |
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 import exceptions |
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23 from sat.core.log import getLogger |
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24 log = getLogger(__name__) |
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25 from sat.tools import xml_tools |
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26 from sat.tools import stream |
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27 from twisted.words.xish import domish |
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28 from twisted.words.protocols.jabber import jid |
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29 from twisted.internet import defer |
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30 from twisted.internet import protocol |
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31 from twisted.internet import endpoints |
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32 from twisted.internet import reactor |
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33 from twisted.internet import error |
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34 from twisted.internet import interfaces |
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35 from zope import interface |
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36 import errno |
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37 |
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38 NS_STREAM = 'http://salut-a-toi.org/protocol/stream' |
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39 SECURITY_LIMIT=30 |
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40 START_PORT = 8888 |
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41 |
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42 PLUGIN_INFO = { |
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43 C.PI_NAME: "Jingle Stream Plugin", |
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44 C.PI_IMPORT_NAME: "STREAM", |
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45 C.PI_TYPE: "EXP", |
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46 C.PI_PROTOCOLS: [], |
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47 C.PI_DEPENDENCIES: ["XEP-0166"], |
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48 C.PI_MAIN: "JingleStream", |
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49 C.PI_HANDLER: "no", |
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50 C.PI_DESCRIPTION: _("""Jingle Stream plugin""") |
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51 } |
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52 |
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53 CONFIRM = D_(u"{peer} wants to send you a stream, do you accept ?") |
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54 CONFIRM_TITLE = D_(u"Stream Request") |
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55 |
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56 |
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57 class StreamProtocol(protocol.Protocol): |
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58 |
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59 def __init__(self): |
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60 self.pause = False |
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61 |
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62 def setPause(self, paused): |
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63 # in Python 2.x, Twisted classes are old style |
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64 # so we can use property and setter |
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65 if paused: |
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66 if not self.pause: |
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67 self.transport.pauseProducing() |
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68 self.pause = True |
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69 else: |
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70 if self.pause: |
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71 self.transport.resumeProducing() |
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72 self.pause = False |
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73 |
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74 def disconnect(self): |
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75 self.transport.loseConnection() |
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76 |
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77 def connectionMade(self): |
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78 if self.factory.client_conn is not None: |
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79 self.transport.loseConnection() |
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80 self.factory.setClientConn(self) |
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81 |
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82 def dataReceived(self, data): |
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83 self.factory.writeToConsumer(data) |
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84 |
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85 def sendData(self, data): |
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86 self.transport.write(data) |
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87 |
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88 def connectionLost(self, reason): |
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89 if self.factory.client_conn != self: |
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90 # only the first connected client_conn is relevant |
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91 return |
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92 |
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93 if reason.type == error.ConnectionDone: |
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94 self.factory.streamFinished() |
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95 else: |
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96 self.factory.streamFailed(reason) |
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97 |
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98 |
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99 @interface.implementer(stream.IStreamProducer) |
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100 @interface.implementer(interfaces.IPushProducer) |
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101 @interface.implementer(interfaces.IConsumer) |
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102 class StreamFactory(protocol.Factory): |
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103 protocol = StreamProtocol |
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104 consumer = None |
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105 producer = None |
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106 deferred = None |
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107 |
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108 def __init__(self): |
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109 self.client_conn = None |
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110 |
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111 def setClientConn(self, stream_protocol): |
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112 # in Python 2.x, Twisted classes are old style |
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113 # so we can use property and setter |
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114 assert self.client_conn is None |
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115 self.client_conn = stream_protocol |
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116 if self.consumer is None: |
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117 self.client_conn.setPause(True) |
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118 |
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119 def startStream(self, consumer): |
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120 if self.consumer is not None: |
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121 raise exceptions.InternalError(_(u"stream can't be used with multiple consumers")) |
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122 assert self.deferred is None |
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123 self.consumer = consumer |
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124 consumer.registerProducer(self, True) |
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125 self.deferred = defer.Deferred() |
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126 if self.client_conn is not None: |
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127 self.client_conn.setPause(False) |
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128 return self.deferred |
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129 |
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130 def streamFinished(self): |
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131 self.client_conn = None |
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132 if self.consumer: |
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133 self.consumer.unregisterProducer() |
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134 self.port_listening.stopListening() |
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135 self.deferred.callback(None) |
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136 |
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137 def streamFailed(self, failure_): |
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138 self.client_conn = None |
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139 if self.consumer: |
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140 self.consumer.unregisterProducer() |
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141 self.port_listening.stopListening() |
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142 self.deferred.errback(failure_) |
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143 elif self.producer: |
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144 self.producer.stopProducing() |
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145 |
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146 def stopStream(self): |
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147 if self.client_conn is not None: |
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148 self.client_conn.disconnect() |
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149 |
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150 def registerProducer(self, producer, streaming): |
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151 self.producer = producer |
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152 |
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153 def pauseProducing(self): |
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154 self.client_conn.setPause(True) |
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155 |
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156 def resumeProducing(self): |
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157 self.client_conn.setPause(False) |
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158 |
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159 def stopProducing(self): |
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160 if self.client_conn: |
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161 self.client_conn.disconnect() |
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162 |
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163 def write(self, data): |
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164 try: |
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165 self.client_conn.sendData(data) |
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166 except AttributeError: |
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167 log.warning(_(u"No client connected, can't send data")) |
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168 |
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169 def writeToConsumer(self, data): |
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170 self.consumer.write(data) |
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171 |
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172 |
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173 class JingleStream(object): |
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174 """This non standard jingle application send byte stream""" |
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175 |
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176 def __init__(self, host): |
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177 log.info(_("Plugin Stream initialization")) |
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178 self.host = host |
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179 self._j = host.plugins["XEP-0166"] # shortcut to access jingle |
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180 self._j.registerApplication(NS_STREAM, self) |
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181 host.bridge.addMethod("streamOut", ".plugin", in_sign='ss', out_sign='s', method=self._streamOut, async=True) |
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182 # jingle callbacks |
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183 |
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184 def _streamOut(self, to_jid_s, profile_key): |
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185 client = self.host.getClient(profile_key) |
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186 return self.streamOut(client, jid.JID(to_jid_s)) |
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187 |
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188 @defer.inlineCallbacks |
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189 def streamOut(self, client, to_jid): |
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190 """send a stream |
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191 |
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192 @param peer_jid(jid.JID): recipient |
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193 @return: an unique id to identify the transfer |
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194 """ |
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195 port = START_PORT |
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196 factory = StreamFactory() |
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197 while True: |
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198 endpoint = endpoints.TCP4ServerEndpoint(reactor, port) |
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199 try: |
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200 port_listening = yield endpoint.listen(factory) |
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201 except error.CannotListenError as e: |
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202 if e.socketError.errno == errno.EADDRINUSE: |
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203 port += 1 |
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204 else: |
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205 raise e |
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206 else: |
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207 factory.port_listening = port_listening |
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208 break |
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209 self._j.initiate(client, |
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210 to_jid, |
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211 [{'app_ns': NS_STREAM, |
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212 'senders': self._j.ROLE_INITIATOR, |
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213 'app_kwargs': {'stream_object': factory}, |
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214 }]) |
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215 defer.returnValue(unicode(port)) |
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216 |
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217 def jingleSessionInit(self, client, session, content_name, stream_object): |
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218 content_data = session['contents'][content_name] |
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219 application_data = content_data['application_data'] |
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220 assert 'stream_object' not in application_data |
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221 application_data['stream_object'] = stream_object |
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222 desc_elt = domish.Element((NS_STREAM, 'description')) |
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223 return desc_elt |
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224 |
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225 @defer.inlineCallbacks |
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226 def jingleRequestConfirmation(self, client, action, session, content_name, desc_elt): |
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227 """This method request confirmation for a jingle session""" |
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228 content_data = session['contents'][content_name] |
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229 if content_data['senders'] not in (self._j.ROLE_INITIATOR, self._j.ROLE_RESPONDER): |
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230 log.warning(u"Bad sender, assuming initiator") |
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231 content_data['senders'] = self._j.ROLE_INITIATOR |
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232 |
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233 confirm_data = yield xml_tools.deferDialog(self.host, |
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234 _(CONFIRM).format(peer=session['peer_jid'].full()), |
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235 _(CONFIRM_TITLE), |
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236 type_=C.XMLUI_DIALOG_CONFIRM, |
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237 action_extra={'meta_from_jid': session['peer_jid'].full(), |
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238 'meta_type': "STREAM", |
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239 }, |
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240 security_limit=SECURITY_LIMIT, |
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241 profile=client.profile) |
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242 |
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243 if not C.bool(confirm_data['answer']): |
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244 defer.returnValue(False) |
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245 try: |
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246 port = int(confirm_data['port']) |
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247 except (ValueError, KeyError): |
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248 raise exceptions.DataError(_(u'given port is invalid')) |
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249 endpoint = endpoints.TCP4ClientEndpoint(reactor, 'localhost', port) |
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250 factory = StreamFactory() |
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251 yield endpoint.connect(factory) |
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252 content_data['stream_object'] = factory |
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253 finished_d = content_data['finished_d'] = defer.Deferred() |
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254 args = [client, session, content_name, content_data] |
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255 finished_d.addCallbacks(self._finishedCb, self._finishedEb, args, None, args) |
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256 defer.returnValue(True) |
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257 |
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258 def jingleHandler(self, client, action, session, content_name, desc_elt): |
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259 content_data = session['contents'][content_name] |
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260 application_data = content_data['application_data'] |
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261 if action in (self._j.A_ACCEPTED_ACK, self._j.A_SESSION_INITIATE): |
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262 pass |
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263 elif action == self._j.A_SESSION_ACCEPT: |
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264 assert not 'stream_object' in content_data |
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265 content_data['stream_object'] = application_data['stream_object'] |
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266 finished_d = content_data['finished_d'] = defer.Deferred() |
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267 args = [client, session, content_name, content_data] |
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268 finished_d.addCallbacks(self._finishedCb, self._finishedEb, args, None, args) |
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269 else: |
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270 log.warning(u"FIXME: unmanaged action {}".format(action)) |
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271 return desc_elt |
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272 |
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273 def _finishedCb(self, dummy, client, session, content_name, content_data): |
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274 log.info(u"Pipe transfer completed") |
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275 self._j.contentTerminate(client, session, content_name) |
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276 content_data['stream_object'].stopStream() |
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277 |
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278 def _finishedEb(self, failure, client, session, content_name, content_data): |
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279 log.warning(u"Error while streaming pipe: {}".format(failure)) |
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280 self._j.contentTerminate(client, session, content_name, reason=self._j.REASON_FAILED_TRANSPORT) |
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281 content_data['stream_object'].stopStream() |