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annotate src/plugins/plugin_xep_0033.py @ 742:03744d9ebc13

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plugin XEP-0033: implementation of the addressing feature: - frontends pass the recipients in the extra parameter of sendMessage - backend checks if the target server supports the feature (this is not done yet by prosody plugin) - features and identities are cached per profile and server - messages are duplicated in history for now (TODO: redesign the database) - echos signals are also duplicated to the sender (FIXME)
author souliane <souliane@mailoo.org>
date Wed, 11 Dec 2013 17:16:53 +0100
parents
children 192b804ee446
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742
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
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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 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 import logging
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21 from sat.core import exceptions
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22 from wokkel import disco, iwokkel
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23 from zope.interface import implements
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24 from twisted.words.protocols.jabber.jid import JID
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25 import copy
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26 try:
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27 from twisted.words.protocols.xmlstream import XMPPHandler
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28 except ImportError:
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29 from wokkel.subprotocols import XMPPHandler
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30 from threading import Timer
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31 from twisted.words.xish import domish
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32 from twisted.internet import defer
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33
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34 from sat.core.sat_main import MessageSentAndStored, AbortSendMessage
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35 from sat.tools.misc import TriggerManager
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36
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37 # TODO: fix Prosody "addressing" plugin to leave the concerned bcc according to the spec:
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38 #
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39 # http://xmpp.org/extensions/xep-0033.html#addr-type-bcc
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40 # "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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41 #
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42 # http://xmpp.org/extensions/xep-0033.html#multicast
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43 # "Each 'bcc' recipient MUST receive only the <address type='bcc'/> associated with that addressee."
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44
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45 # TODO: fix Prosody "addressing" plugin to determine itself if remote servers supports this XEP
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46
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47
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48 NS_XMPP_CLIENT = "jabber:client"
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49 NS_ADDRESS = "http://jabber.org/protocol/address"
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50 ATTRIBUTES = ["jid", "uri", "node", "desc", "delivered", "type"]
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51 ADDRESS_TYPES = ["to", "cc", "bcc", "replyto", "replyroom", "noreply"]
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52
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53 PLUGIN_INFO = {
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54 "name": "Extended Stanza Addressing Protocol Plugin",
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55 "import_name": "XEP-0033",
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56 "type": "XEP",
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57 "protocols": ["XEP-0033"],
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58 "dependencies": [],
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59 "main": "XEP_0033",
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60 "handler": "yes",
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61 "description": _("""Implementation of Extended Stanza Addressing""")
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62 }
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63
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64
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65 class XEP_0033(object):
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66 """
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67 Implementation for XEP 0033
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68 """
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69 def __init__(self, host):
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70 logging.info(_("Extended Stanza Addressing plugin initialization"))
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71 self.host = host
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72 host.trigger.add("sendMessage", self.sendMessageTrigger, TriggerManager.MIN_PRIORITY)
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73 host.trigger.add("MessageReceived", self.messageReceivedTrigger)
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74
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75 def sendMessageTrigger(self, mess_data, treatments, profile):
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76 """Process the XEP-0033 related data to be sent"""
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77
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78 def treatment(mess_data):
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79 if not 'address' in mess_data['extra']:
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80 return mess_data
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81
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82 def discoCallback(entity):
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83 if entity is None:
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84 raise AbortSendMessage(_("XEP-0033 is being used but the server doesn't support it!"))
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85 to = JID(mess_data["to"].host)
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86 if to != entity:
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87 logging.warning(_("Stanzas using XEP-0033 should be addressed to %s, not %s!") % (entity, to))
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88 logging.warning(_("TODO: addressing has be fixed by the backend... fix it in the frontend!"))
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89 mess_data["to"] = entity
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90 element = mess_data['xml'].addElement('addresses', NS_ADDRESS)
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91 entries = [entry.split(':') for entry in mess_data['extra']['address'].split('\n') if entry != '']
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92 for type_, jid_ in entries:
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93 element.addChild(domish.Element((None, 'address'), None, {'type': type_, 'jid': jid_}))
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94 # when the prosody plugin is completed, we can immediately return mess_data from here
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95 return self.sendAndStoreMessage(mess_data, entries, profile)
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96
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97 d = self.host.requestServerDisco(NS_ADDRESS, profile_key=profile)
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98 d.addCallbacks(discoCallback, lambda dummy: discoCallback(None))
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99 return d
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100
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101 treatments.addCallback(treatment)
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102 return True
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103
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104 def sendAndStoreMessage(self, mess_data, entries, profile):
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105 """Check if target servers support XEP-0033, send and store the messages
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106 @raise: a friendly failure to let the core know that we sent the message already
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107
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108 Later we should be able to remove this method because:
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109 # XXX: sending the messages should be done by the local server
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110 # FIXME: for now we duplicate the messages in the history for each recipient, this should change
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111 # FIXME: for now we duplicate the echoes to the sender, this should also change
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112 Ideas:
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113 - fix Prosody plugin to check if target server support the feature
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114 - redesign the database to save only one entry to the database
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115 - change the newMessage signal to eventually pass more than one recipient
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116 """
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117 def discoCallback(entity, to_jid):
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118 new_data = copy.deepcopy(mess_data)
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119 new_data['to'] = JID(to_jid)
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120 new_data['xml']['to'] = to_jid
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121 if entity:
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122 if 'address' in mess_data['extra']:
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123 self.host.sendAndStoreMessage(mess_data, False, profile)
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124 # just to remember that the message has been sent
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125 del mess_data['extra']['address']
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126 # we still need to fill the history and signal the echo...
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127 self.host.sendAndStoreMessage(new_data, True, profile)
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128 else:
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129 # target server misses the addressing feature
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130 self.host.sendAndStoreMessage(new_data, False, profile)
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131
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132 def errback(failure, to_jid):
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133 discoCallback(None, to_jid)
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134
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135 for type_, jid_ in entries:
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136 d = defer.Deferred()
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souliane <souliane@mailoo.org>
parents:
diff changeset
137 d.addCallback(self.host.requestServerDisco, JID(JID(jid_).host), profile_key=profile)
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
138 d.addCallbacks(discoCallback, errback, callbackArgs=[jid_], errbackArgs=[jid_])
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
139 d.callback(NS_ADDRESS)
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souliane <souliane@mailoo.org>
parents:
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140
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
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141 raise MessageSentAndStored("XEP-0033 took over")
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
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142
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
143 def messageReceivedTrigger(self, message, post_treat, profile):
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
144 """In order to save the addressing information in the history"""
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
145 def post_treat_addr(data, addresses):
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
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146 data['extra']['addresses'] = ""
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
147 for address in addresses:
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
148 data['extra']['addresses'] += '%s:%s\n' % (address['type'], address['jid'])
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souliane <souliane@mailoo.org>
parents:
diff changeset
149 return data
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
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150
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
151 try:
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
152 addresses = message.elements(NS_ADDRESS, 'addresses').next()
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
153 post_treat.addCallback(post_treat_addr, addresses.children)
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
154 except StopIteration:
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
155 pass # no addresses
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
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156 return True
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
157
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
158 def getHandler(self, profile):
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
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159 return XEP_0033_handler(self, profile)
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
160
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
161
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
162 class XEP_0033_handler(XMPPHandler):
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
163 implements(iwokkel.IDisco)
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
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164
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
165 def __init__(self, plugin_parent, profile):
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
166 self.plugin_parent = plugin_parent
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
167 self.host = plugin_parent.host
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
168 self.profile = profile
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
169
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
170 def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
171 return [disco.DiscoFeature(NS_ADDRESS)]
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
172
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
173 def getDiscoItems(self, requestor, target, nodeIdentifier=''):
03744d9ebc13 plugin XEP-0033: implementation of the addressing feature:
souliane <souliane@mailoo.org>
parents:
diff changeset
174 return []