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annotate src/plugins/plugin_xep_0033.py @ 1422:be1fccf4854d

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tmp (wokkel): licenses fixes: the licenses headers were wrong, it was fixed: original work from Adrien Cossa is directly under AGPL v3 (with his agreement), work derivated from Wokkel is sublicensed to AGPL v3 as allowed by the original license, to stay consistent with the rest of the code base. Theses files (and only these ones) can be relicensed again to fill Wokkel license if Ralph plan to merge them upstream...
author Goffi <goffi@goffi.org>
date Thu, 23 Apr 2015 10:57:40 +0200
parents 3265a2639182
children e0bde0d0b321
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 # SAT plugin for Extended Stanza Addressing (xep-0033)
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5 # Copyright (C) 2013, 2014, 2015 Adrien Cossa (souliane@mailoo.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from sat.core.i18n import _
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21 from sat.core.log import getLogger
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22 log = getLogger(__name__)
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23 from sat.core import exceptions
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24 from wokkel import disco, iwokkel
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25 from zope.interface import implements
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26 from twisted.words.protocols.jabber.jid import JID
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27 from twisted.python import failure
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28 import copy
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29 try:
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30 from twisted.words.protocols.xmlstream import XMPPHandler
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31 except ImportError:
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32 from wokkel.subprotocols import XMPPHandler
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33 from twisted.words.xish import domish
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34 from twisted.internet import defer
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35
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36 from sat.tools import trigger
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37 from time import time
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38
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39 # TODO: fix Prosody "addressing" plugin to leave the concerned bcc according to the spec:
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40 #
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41 # http://xmpp.org/extensions/xep-0033.html#addr-type-bcc
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42 # "This means that the server MUST remove these addresses before the stanza is delivered to anyone other than the given bcc addressee or the multicast service of the bcc addressee."
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43 #
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44 # http://xmpp.org/extensions/xep-0033.html#multicast
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45 # "Each 'bcc' recipient MUST receive only the <address type='bcc'/> associated with that addressee."
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46
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47 # TODO: fix Prosody "addressing" plugin to determine itself if remote servers supports this XEP
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48
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49
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50 NS_XMPP_CLIENT = "jabber:client"
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51 NS_ADDRESS = "http://jabber.org/protocol/address"
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52 ATTRIBUTES = ["jid", "uri", "node", "desc", "delivered", "type"]
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53 ADDRESS_TYPES = ["to", "cc", "bcc", "replyto", "replyroom", "noreply"]
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54
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55 PLUGIN_INFO = {
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56 "name": "Extended Stanza Addressing Protocol Plugin",
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57 "import_name": "XEP-0033",
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58 "type": "XEP",
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59 "protocols": ["XEP-0033"],
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60 "dependencies": [],
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61 "main": "XEP_0033",
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62 "handler": "yes",
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63 "description": _("""Implementation of Extended Stanza Addressing""")
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64 }
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65
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66
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67 class XEP_0033(object):
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68 """
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69 Implementation for XEP 0033
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70 """
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71 def __init__(self, host):
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72 log.info(_("Extended Stanza Addressing plugin initialization"))
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73 self.host = host
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74 self.internal_data = {}
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75 host.trigger.add("sendMessage", self.sendMessageTrigger, trigger.TriggerManager.MIN_PRIORITY)
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76 host.trigger.add("MessageReceived", self.messageReceivedTrigger)
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77
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78 def sendMessageTrigger(self, mess_data, pre_xml_treatments, post_xml_treatments, profile):
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79 """Process the XEP-0033 related data to be sent"""
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80
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81 def treatment(mess_data):
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82 if not 'address' in mess_data['extra']:
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83 return mess_data
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84
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85 def discoCallback(entities):
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86 if not entities:
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87 log.warning(_("XEP-0033 is being used but the server doesn't support it!"))
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88 raise failure.Failure(exceptions.CancelError())
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89 if mess_data["to"] not in entities:
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90 expected = _(' or ').join([entity.userhost() for entity in entities])
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91 log.warning(_(u"Stanzas using XEP-0033 should be addressed to %(expected)s, not %(current)s!") % {'expected': expected, 'current': mess_data["to"]})
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92 log.warning(_(u"TODO: addressing has been fixed by the backend... fix it in the frontend!"))
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93 mess_data["to"] = list(entities)[0].userhostJID()
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94 element = mess_data['xml'].addElement('addresses', NS_ADDRESS)
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95 entries = [entry.split(':') for entry in mess_data['extra']['address'].split('\n') if entry != '']
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96 for type_, jid_ in entries:
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97 element.addChild(domish.Element((None, 'address'), None, {'type': type_, 'jid': jid_}))
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98 # when the prosody plugin is completed, we can immediately return mess_data from here
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99 self.sendAndStoreMessage(mess_data, entries, profile)
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100 log.debug("XEP-0033 took over")
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101 raise failure.Failure(exceptions.CancelError())
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102 d = self.host.findFeaturesSet([NS_ADDRESS], profile_key=profile)
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103 d.addCallbacks(discoCallback, lambda dummy: discoCallback(None))
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104 return d
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105
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106 post_xml_treatments.addCallback(treatment)
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107 return True
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108
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109 def sendAndStoreMessage(self, mess_data, entries, profile):
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110 """Check if target servers support XEP-0033, send and store the messages
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111 @return: a friendly failure to let the core know that we sent the message already
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112
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113 Later we should be able to remove this method because:
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114 # XXX: sending the messages should be done by the local server
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115 # FIXME: for now we duplicate the messages in the history for each recipient, this should change
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116 # FIXME: for now we duplicate the echoes to the sender, this should also change
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117 Ideas:
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118 - fix Prosody plugin to check if target server support the feature
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119 - redesign the database to save only one entry to the database
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120 - change the newMessage signal to eventually pass more than one recipient
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121 """
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122 def send(mess_data, skip_send=False):
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123 client = self.host.profiles[profile]
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124 d = defer.Deferred()
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125 if not skip_send:
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126 d.addCallback(self.host._sendMessageToStream, client)
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127 d.addCallback(self.host._storeMessage, client)
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128 d.addCallback(self.host.sendMessageToBridge, client)
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129 d.addErrback(lambda failure: failure.trap(exceptions.CancelError))
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130 return d.callback(mess_data)
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131
999
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132 def discoCallback(entities, to_jid_s):
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133 history_data = copy.deepcopy(mess_data)
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134 history_data['to'] = JID(to_jid_s)
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135 history_data['xml']['to'] = to_jid_s
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136 if entities:
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137 if entities not in self.internal_data[timestamp]:
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138 sent_data = copy.deepcopy(mess_data)
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139 sent_data['to'] = JID(JID(to_jid_s).host)
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140 sent_data['xml']['to'] = JID(to_jid_s).host
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141 send(sent_data)
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142 self.internal_data[timestamp].append(entities)
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143 # we still need to fill the history and signal the echo...
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144 send(history_data, skip_send=True)
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145 else:
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146 # target server misses the addressing feature
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147 send(history_data)
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148
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149 def errback(failure, to_jid):
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150 discoCallback(None, to_jid)
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151
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152 timestamp = time()
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153 self.internal_data[timestamp] = []
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154 defer_list = []
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155 for type_, jid_ in entries:
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156 d = defer.Deferred()
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157 d.addCallback(self.host.findFeaturesSet, jid_=JID(JID(jid_).host), profile_key=profile)
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158 d.addCallbacks(discoCallback, errback, callbackArgs=[jid_], errbackArgs=[jid_])
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159 d.callback([NS_ADDRESS])
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160 defer_list.append(d)
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161 d = defer.Deferred().addCallback(lambda dummy: self.internal_data.pop(timestamp))
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162 defer.DeferredList(defer_list).chainDeferred(d)
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163
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164 def messageReceivedTrigger(self, message, post_treat, profile):
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165 """In order to save the addressing information in the history"""
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166 def post_treat_addr(data, addresses):
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167 data['extra']['addresses'] = ""
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168 for address in addresses:
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169 # Depending how message has been constructed, we could get here
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170 # some noise like "\n " instead of an address element.
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171 if isinstance(address, domish.Element):
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172 data['extra']['addresses'] += '%s:%s\n' % (address['type'], address['jid'])
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173 return data
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174
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175 try:
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176 addresses = message.elements(NS_ADDRESS, 'addresses').next()
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177 post_treat.addCallback(post_treat_addr, addresses.children)
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178 except StopIteration:
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179 pass # no addresses
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180 return True
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181
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182 def getHandler(self, profile):
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183 return XEP_0033_handler(self, profile)
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184
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185
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186 class XEP_0033_handler(XMPPHandler):
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187 implements(iwokkel.IDisco)
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188
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189 def __init__(self, plugin_parent, profile):
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190 self.plugin_parent = plugin_parent
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191 self.host = plugin_parent.host
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192 self.profile = profile
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193
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194 def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
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195 return [disco.DiscoFeature(NS_ADDRESS)]
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196
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197 def getDiscoItems(self, requestor, target, nodeIdentifier=''):
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198 return []