annotate src/plugins/plugin_xep_0033.py @ 1005:b4af31a8a4f2

core (logs): added formatting, name filter and outputs management: - formatting is inspired from, and use when possible, standard logging. "message", "levelname", and "name" are the only format managed, depending on backend more can be managed (standard backend formats are specified in official python logging doc) - name filter use regular expressions. It's possible to log only plugins with SAT_LOG_LOGGER="^sat.plugins". To log only XEPs 96 & 65, we can use SAT_LOG_LOGGER='(xep_0095|xep_0065)' - output management use a particular syntax: - output handler are name with "//", so far there are "//default" (most of time stderr), "//memory" and "//file" - options can be specified in parenthesis, e.g. "//memory(50)" mean a 50 lines memory buffer (50 is the current default, so that's equivalent to "//memory") - several handlers can be specified: "//file(/tmp/sat.log)//default" will use the default logging + a the /tmp/sat.log file - if there is only one handler, it use the file handler: "/tmp/sat.log" is the same as "//file(/tmp/sat.log)" - not finished, need more work for twisted and basic backends
author Goffi <goffi@goffi.org>
date Mon, 05 May 2014 18:58:34 +0200
parents c37a24922f27
children e88bff4c8b77
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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 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 wokkel import disco, iwokkel
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24 from zope.interface import implements
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25 from twisted.words.protocols.jabber.jid import JID
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26 from twisted.python.failure import Failure
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27 import copy
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28 try:
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29 from twisted.words.protocols.xmlstream import XMPPHandler
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30 except ImportError:
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31 from wokkel.subprotocols import XMPPHandler
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32 from twisted.words.xish import domish
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33 from twisted.internet import defer
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34
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35 from sat.core.sat_main import MessageSentAndStored, AbortSendMessage
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36 from sat.tools.misc import TriggerManager
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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, 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 return Failure(AbortSendMessage(_("XEP-0033 is being used but the server doesn't support it!")))
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88 if mess_data["to"] not in entities:
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89 expected = _(' or ').join([entity.userhost() for entity in entities])
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90 log.warning(_("Stanzas using XEP-0033 should be addressed to %(expected)s, not %(current)s!") % {'expected': expected, 'current': mess_data["to"]})
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91 log.warning(_("TODO: addressing has been fixed by the backend... fix it in the frontend!"))
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92 mess_data["to"] = list(entities)[0].userhostJID()
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93 element = mess_data['xml'].addElement('addresses', NS_ADDRESS)
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94 entries = [entry.split(':') for entry in mess_data['extra']['address'].split('\n') if entry != '']
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95 for type_, jid_ in entries:
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96 element.addChild(domish.Element((None, 'address'), None, {'type': type_, 'jid': jid_}))
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97 # when the prosody plugin is completed, we can immediately return mess_data from here
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98 self.sendAndStoreMessage(mess_data, entries, profile)
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99 return Failure(MessageSentAndStored("XEP-0033 took over", mess_data))
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100 d = self.host.findFeaturesSet([NS_ADDRESS], profile_key=profile)
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101 d.addCallbacks(discoCallback, lambda dummy: discoCallback(None))
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102 return d
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103
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104 post_xml_treatments.addCallback(treatment)
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105 return True
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106
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107 def sendAndStoreMessage(self, mess_data, entries, profile):
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108 """Check if target servers support XEP-0033, send and store the messages
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109 @return: a friendly failure to let the core know that we sent the message already
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110
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111 Later we should be able to remove this method because:
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112 # XXX: sending the messages should be done by the local server
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113 # FIXME: for now we duplicate the messages in the history for each recipient, this should change
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114 # FIXME: for now we duplicate the echoes to the sender, this should also change
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115 Ideas:
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116 - fix Prosody plugin to check if target server support the feature
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117 - redesign the database to save only one entry to the database
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118 - change the newMessage signal to eventually pass more than one recipient
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119 """
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120 def discoCallback(entities, to_jid_s):
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121 history_data = copy.deepcopy(mess_data)
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122 history_data['to'] = JID(to_jid_s)
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123 history_data['xml']['to'] = to_jid_s
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124 if entities:
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125 if entities not in self.internal_data[timestamp]:
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126 sent_data = copy.deepcopy(mess_data)
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127 sent_data['to'] = JID(JID(to_jid_s).host)
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128 sent_data['xml']['to'] = JID(to_jid_s).host
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129 self.host.sendAndStoreMessage(sent_data, False, profile)
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130 self.internal_data[timestamp].append(entities)
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131 # we still need to fill the history and signal the echo...
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132 self.host.sendAndStoreMessage(history_data, True, profile)
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133 else:
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134 # target server misses the addressing feature
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135 self.host.sendAndStoreMessage(history_data, False, profile)
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136
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137 def errback(failure, to_jid):
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138 discoCallback(None, to_jid)
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139
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140 timestamp = time()
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141 self.internal_data[timestamp] = []
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142 defer_list = []
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143 for type_, jid_ in entries:
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144 d = defer.Deferred()
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145 d.addCallback(self.host.findFeaturesSet, jid_=JID(JID(jid_).host), profile_key=profile)
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146 d.addCallbacks(discoCallback, errback, callbackArgs=[jid_], errbackArgs=[jid_])
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147 d.callback([NS_ADDRESS])
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148 defer_list.append(d)
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149 d = defer.Deferred().addCallback(lambda dummy: self.internal_data.pop(timestamp))
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150 defer.DeferredList(defer_list).chainDeferred(d)
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151
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152 def messageReceivedTrigger(self, message, post_treat, profile):
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153 """In order to save the addressing information in the history"""
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154 def post_treat_addr(data, addresses):
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155 data['extra']['addresses'] = ""
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156 for address in addresses:
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157 # Depending how message has been constructed, we could get here
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158 # some noise like "\n " instead of an address element.
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159 if isinstance(address, domish.Element):
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160 data['extra']['addresses'] += '%s:%s\n' % (address['type'], address['jid'])
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161 return data
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162
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163 try:
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164 addresses = message.elements(NS_ADDRESS, 'addresses').next()
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165 post_treat.addCallback(post_treat_addr, addresses.children)
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166 except StopIteration:
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167 pass # no addresses
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168 return True
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169
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170 def getHandler(self, profile):
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171 return XEP_0033_handler(self, profile)
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172
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173
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174 class XEP_0033_handler(XMPPHandler):
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175 implements(iwokkel.IDisco)
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176
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177 def __init__(self, plugin_parent, profile):
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178 self.plugin_parent = plugin_parent
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179 self.host = plugin_parent.host
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180 self.profile = profile
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181
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182 def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
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183 return [disco.DiscoFeature(NS_ADDRESS)]
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184
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185 def getDiscoItems(self, requestor, target, nodeIdentifier=''):
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186 return []