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annotate sat/plugins/plugin_exp_jingle_stream.py @ 2571:4aca060075b7

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setup: version is now set in SAT/VERSION, sat is not imported anymore in setup
author Goffi <goffi@goffi.org>
date Thu, 05 Apr 2018 10:41:08 +0200
parents 26edcf3a30eb
children 56f94936df1e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1934
2daf7b4c6756 use of /usr/bin/env instead of /usr/bin/python in shebang
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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)
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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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parents: 2483
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127 self.client_conn.setPause(False)
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parents: 2483
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128 return self.deferred
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129
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Goffi <goffi@goffi.org>
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130 def streamFinished(self):
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131 self.client_conn = None
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Goffi <goffi@goffi.org>
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132 if self.consumer:
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133 self.consumer.unregisterProducer()
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parents: 2483
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134 self.port_listening.stopListening()
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
135 self.deferred.callback(None)
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parents: 2483
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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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Goffi <goffi@goffi.org>
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139 if self.consumer:
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Goffi <goffi@goffi.org>
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diff changeset
140 self.consumer.unregisterProducer()
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
141 self.port_listening.stopListening()
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
142 self.deferred.errback(failure_)
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Goffi <goffi@goffi.org>
parents: 2483
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143 elif self.producer:
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Goffi <goffi@goffi.org>
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diff changeset
144 self.producer.stopProducing()
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145
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Goffi <goffi@goffi.org>
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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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Goffi <goffi@goffi.org>
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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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Goffi <goffi@goffi.org>
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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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Goffi <goffi@goffi.org>
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159 def stopProducing(self):
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Goffi <goffi@goffi.org>
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160 if self.client_conn:
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Goffi <goffi@goffi.org>
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diff changeset
161 self.client_conn.disconnect()
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162
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Goffi <goffi@goffi.org>
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163 def write(self, data):
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Goffi <goffi@goffi.org>
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164 try:
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Goffi <goffi@goffi.org>
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165 self.client_conn.sendData(data)
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Goffi <goffi@goffi.org>
parents: 2483
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166 except AttributeError:
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
167 log.warning(_(u"No client connected, can't send data"))
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parents: 2483
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168
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Goffi <goffi@goffi.org>
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diff changeset
169 def writeToConsumer(self, data):
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diff changeset
170 self.consumer.write(data)
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parents: 2483
diff changeset
171
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Goffi <goffi@goffi.org>
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diff changeset
172
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Goffi <goffi@goffi.org>
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diff changeset
173 class JingleStream(object):
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
174 """This non standard jingle application send byte stream"""
401
b2caa2615c4c jp roster name manegement + Pipe transfer
Goffi <goffi@goffi.org>
parents:
diff changeset
175
b2caa2615c4c jp roster name manegement + Pipe transfer
Goffi <goffi@goffi.org>
parents:
diff changeset
176 def __init__(self, host):
2489
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177 log.info(_("Plugin Stream initialization"))
401
b2caa2615c4c jp roster name manegement + Pipe transfer
Goffi <goffi@goffi.org>
parents:
diff changeset
178 self.host = host
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Goffi <goffi@goffi.org>
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179 self._j = host.plugins["XEP-0166"] # shortcut to access jingle
2489
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180 self._j.registerApplication(NS_STREAM, self)
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Goffi <goffi@goffi.org>
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diff changeset
181 host.bridge.addMethod("streamOut", ".plugin", in_sign='ss', out_sign='s', method=self._streamOut, async=True)
1669
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
182 # jingle callbacks
401
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parents:
diff changeset
183
2489
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diff changeset
184 def _streamOut(self, to_jid_s, profile_key):
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diff changeset
185 client = self.host.getClient(profile_key)
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
186 return self.streamOut(client, jid.JID(to_jid_s))
401
b2caa2615c4c jp roster name manegement + Pipe transfer
Goffi <goffi@goffi.org>
parents:
diff changeset
187
2489
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diff changeset
188 @defer.inlineCallbacks
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
189 def streamOut(self, client, to_jid):
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parents: 2483
diff changeset
190 """send a stream
401
b2caa2615c4c jp roster name manegement + Pipe transfer
Goffi <goffi@goffi.org>
parents:
diff changeset
191
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
192 @param peer_jid(jid.JID): recipient
401
b2caa2615c4c jp roster name manegement + Pipe transfer
Goffi <goffi@goffi.org>
parents:
diff changeset
193 @return: an unique id to identify the transfer
b2caa2615c4c jp roster name manegement + Pipe transfer
Goffi <goffi@goffi.org>
parents:
diff changeset
194 """
2489
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diff changeset
195 port = START_PORT
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
196 factory = StreamFactory()
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
197 while True:
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
198 endpoint = endpoints.TCP4ServerEndpoint(reactor, port)
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
199 try:
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
200 port_listening = yield endpoint.listen(factory)
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
201 except error.CannotListenError as e:
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
202 if e.socketError.errno == errno.EADDRINUSE:
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
203 port += 1
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
204 else:
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
205 raise e
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
206 else:
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
207 factory.port_listening = port_listening
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
208 break
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
209 self._j.initiate(client,
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
210 to_jid,
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
211 [{'app_ns': NS_STREAM,
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
212 'senders': self._j.ROLE_INITIATOR,
2489
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
213 'app_kwargs': {'stream_object': factory},
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
214 }])
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
215 defer.returnValue(unicode(port))
1669
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
216
2489
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
217 def jingleSessionInit(self, client, session, content_name, stream_object):
1669
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
218 content_data = session['contents'][content_name]
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
219 application_data = content_data['application_data']
2489
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
220 assert 'stream_object' not in application_data
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
221 application_data['stream_object'] = stream_object
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
222 desc_elt = domish.Element((NS_STREAM, 'description'))
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
223 return desc_elt
587
952322b1d490 Remove trailing whitespaces.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 585
diff changeset
224
2489
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
225 @defer.inlineCallbacks
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
226 def jingleRequestConfirmation(self, client, action, session, content_name, desc_elt):
1669
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Goffi <goffi@goffi.org>
parents: 1409
diff changeset
227 """This method request confirmation for a jingle session"""
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
228 content_data = session['contents'][content_name]
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
229 if content_data['senders'] not in (self._j.ROLE_INITIATOR, self._j.ROLE_RESPONDER):
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
230 log.warning(u"Bad sender, assuming initiator")
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
231 content_data['senders'] = self._j.ROLE_INITIATOR
587
952322b1d490 Remove trailing whitespaces.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 585
diff changeset
232
2489
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
233 confirm_data = yield xml_tools.deferDialog(self.host,
1669
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
234 _(CONFIRM).format(peer=session['peer_jid'].full()),
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
235 _(CONFIRM_TITLE),
2489
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
236 type_=C.XMLUI_DIALOG_CONFIRM,
1669
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
237 action_extra={'meta_from_jid': session['peer_jid'].full(),
2489
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
238 'meta_type': "STREAM",
1669
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
239 },
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
240 security_limit=SECURITY_LIMIT,
2489
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
241 profile=client.profile)
1669
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
242
2489
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
243 if not C.bool(confirm_data['answer']):
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Goffi <goffi@goffi.org>
parents: 2483
diff changeset
244 defer.returnValue(False)
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Goffi <goffi@goffi.org>
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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)
401
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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
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
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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)
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
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parents: 1409
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269 else:
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
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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()