Mercurial > libervia-backend

annotate sat/plugins/plugin_xep_0115.py @ 2617:81b70eeb710f

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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>
date Sun, 24 Jun 2018 21:59:29 +0200
parents e70023e84974
children 56f94936df1e
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rev   line source
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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 xep-0115
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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 _
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21 from sat.core.constants import Const as C
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22 from sat.core.log import getLogger
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23 log = getLogger(__name__)
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24 from twisted.words.xish import domish
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25 from twisted.words.protocols.jabber import jid
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26 from twisted.internet import defer, error
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27 from zope.interface import implements
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28 from wokkel import disco, iwokkel
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29
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30 try:
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31 from twisted.words.protocols.xmlstream import XMPPHandler
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32 except ImportError:
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33 from wokkel.subprotocols import XMPPHandler
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34
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35 PRESENCE = '/presence'
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36 NS_ENTITY_CAPABILITY = 'http://jabber.org/protocol/caps'
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37 NS_CAPS_OPTIMIZE = 'http://jabber.org/protocol/caps#optimize'
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38 CAPABILITY_UPDATE = PRESENCE + '/c[@xmlns="' + NS_ENTITY_CAPABILITY + '"]'
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40 PLUGIN_INFO = {
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41 C.PI_NAME: "XEP 0115 Plugin",
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42 C.PI_IMPORT_NAME: "XEP-0115",
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43 C.PI_TYPE: "XEP",
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44 C.PI_MODES: C.PLUG_MODE_BOTH,
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45 C.PI_PROTOCOLS: ["XEP-0115"],
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46 C.PI_DEPENDENCIES: [],
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47 C.PI_MAIN: "XEP_0115",
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48 C.PI_HANDLER: "yes",
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49 C.PI_DESCRIPTION: _("""Implementation of entity capabilities""")
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50 }
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52
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53 class XEP_0115(object):
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54 cap_hash = None # capabilities hash is class variable as it is common to all profiles
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55
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56 def __init__(self, host):
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57 log.info(_("Plugin XEP_0115 initialization"))
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58 self.host = host
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59 host.trigger.add("Presence send", self._presenceTrigger)
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60
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61 def getHandler(self, client):
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62 return XEP_0115_handler(self, client.profile)
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63
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64 @defer.inlineCallbacks
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65 def _prepareCaps(self, client):
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66 # we have to calculate hash for client
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67 # because disco infos/identities may change between clients
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68
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69 # optimize check
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70 client._caps_optimize = yield self.host.hasFeature(client, NS_CAPS_OPTIMIZE)
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71 if client._caps_optimize:
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72 log.info(_(u"Caps optimisation enabled"))
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73 client._caps_sent = False
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74 else:
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75 log.warning(_(u"Caps optimisation not available"))
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76
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77 # hash generation
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78 _infos = yield client.discoHandler.info(client.jid, client.jid, '')
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79 disco_infos = disco.DiscoInfo()
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80 for item in _infos:
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81 disco_infos.append(item)
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82 cap_hash = client._caps_hash = self.host.memory.disco.generateHash(disco_infos)
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83 log.info(u"Our capability hash has been generated: [{cap_hash}]".format(
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84 cap_hash = cap_hash))
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85 log.debug(u"Generating capability domish.Element")
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86 c_elt = domish.Element((NS_ENTITY_CAPABILITY, 'c'))
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87 c_elt['hash'] = 'sha-1'
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88 c_elt['node'] = C.APP_URL
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89 c_elt['ver'] = cap_hash
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90 client._caps_elt = c_elt
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91 if client._caps_optimize:
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92 client._caps_sent = False
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93 if cap_hash not in self.host.memory.disco.hashes:
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94 self.host.memory.disco.hashes[cap_hash] = disco_infos
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95 self.host.memory.updateEntityData(client.jid, C.ENTITY_CAP_HASH, cap_hash, profile_key=client.profile)
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96
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97 def _presenceAddElt(self, client, obj):
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98 if client._caps_optimize:
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99 if client._caps_sent:
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100 return
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101 client.caps_sent = True
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102 obj.addChild(client._caps_elt)
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103
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104 def _presenceTrigger(self, client, obj, presence_d):
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105 if not hasattr(client, "_caps_optimize"):
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106 presence_d.addCallback(lambda __: self._prepareCaps(client))
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107
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108 presence_d.addCallback(lambda __: self._presenceAddElt(client, obj))
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109 return True
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110
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111
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112 class XEP_0115_handler(XMPPHandler):
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113 implements(iwokkel.IDisco)
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114
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115 def __init__(self, plugin_parent, profile):
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116 self.plugin_parent = plugin_parent
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117 self.host = plugin_parent.host
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118 self.profile = profile
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119
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120 def connectionInitialized(self):
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121 self.xmlstream.addObserver(CAPABILITY_UPDATE, self.update)
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122
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123 def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
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124 return [disco.DiscoFeature(NS_ENTITY_CAPABILITY), disco.DiscoFeature(NS_CAPS_OPTIMIZE)]
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125
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126 def getDiscoItems(self, requestor, target, nodeIdentifier=''):
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127 return []
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128
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129 def update(self, presence):
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130 """
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parents:
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131 Manage the capabilities of the entity
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parents: 941
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132
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souliane <souliane@mailoo.org>
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133 Check if we know the version of this capabilities and get the capabilities if necessary
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134 """
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parents:
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135 from_jid = jid.JID(presence['from'])
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parents: 941
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136 c_elem = presence.elements(NS_ENTITY_CAPABILITY, 'c').next()
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parents:
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137 try:
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Goffi <goffi@goffi.org>
parents: 941
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138 c_ver = c_elem['ver']
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Goffi <goffi@goffi.org>
parents: 941
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139 c_hash = c_elem['hash']
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parents: 941
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140 c_node = c_elem['node']
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141 except KeyError:
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3265a2639182 massive (preventive) addition of 'u' (unicode) before the strings passed to logging functions
souliane <souliane@mailoo.org>
parents: 1396
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142 log.warning(_(u'Received invalid capabilities tag: %s') % c_elem.toXml())
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143 return
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144
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Goffi <goffi@goffi.org>
parents: 941
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145 if c_ver in self.host.memory.disco.hashes:
e1842ebcb2f3 core, plugin XEP-0115: discovery refactoring:
Goffi <goffi@goffi.org>
parents: 941
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146 # we already know the hash, we update the jid entity
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souliane <souliane@mailoo.org>
parents: 1396
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147 log.debug(u"hash [%(hash)s] already in cache, updating entity [%(jid)s]" % {'hash': c_ver, 'jid': from_jid.full()})
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be3a301540c0 core (memory): updateEntityData now accept a "silent" argument to avoid sending signal to frontends when updating an attribute with "signalOnUpdate" flag.
Goffi <goffi@goffi.org>
parents: 1246
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148 self.host.memory.updateEntityData(from_jid, C.ENTITY_CAP_HASH, c_ver, profile_key=self.profile)
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149 return
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parents: 941
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150
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souliane <souliane@mailoo.org>
parents: 1232
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151 if c_hash != 'sha-1': # unknown hash method
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souliane <souliane@mailoo.org>
parents: 1396
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152 log.warning(_(u'Unknown hash method for entity capabilities: [%(hash_method)s] (entity: %(jid)s, node: %(node)s)') % {'hash_method':c_hash, 'jid': from_jid, 'node': c_node})
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153
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souliane <souliane@mailoo.org>
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154 def cb(dummy):
c3884a63efde plugin XEP-0115: better disco error handling
souliane <souliane@mailoo.org>
parents: 1232
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155 computed_hash = self.host.memory.getEntityDatum(from_jid, C.ENTITY_CAP_HASH, self.profile)
c3884a63efde plugin XEP-0115: better disco error handling
souliane <souliane@mailoo.org>
parents: 1232
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156 if computed_hash != c_ver:
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souliane <souliane@mailoo.org>
parents: 1396
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157 log.warning(_(u'Computed hash differ from given hash:\ngiven: [%(given_hash)s]\ncomputed: [%(computed_hash)s]\n(entity: %(jid)s, node: %(node)s)') % {'given_hash':c_ver, 'computed_hash': computed_hash, 'jid': from_jid, 'node': c_node})
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parents: 941
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158
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souliane <souliane@mailoo.org>
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159 def eb(failure):
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souliane <souliane@mailoo.org>
parents: 1232
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160 if isinstance(failure.value, error.ConnectionDone):
c3884a63efde plugin XEP-0115: better disco error handling
souliane <souliane@mailoo.org>
parents: 1232
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161 return
c3884a63efde plugin XEP-0115: better disco error handling
souliane <souliane@mailoo.org>
parents: 1232
diff changeset
162 msg = failure.value.condition if hasattr(failure.value, 'condition') else failure.getErrorMessage()
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souliane <souliane@mailoo.org>
parents: 1396
diff changeset
163 log.error(_(u"Couldn't retrieve disco info for {jid}: {error}").format(jid=from_jid.full(), error=msg))
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souliane <souliane@mailoo.org>
parents: 1232
diff changeset
164
2148
a543eda2c923 core (memory/disco): getInfos now handle node + use client instead of profile in many methods
Goffi <goffi@goffi.org>
parents: 2145
diff changeset
165 d = self.host.getDiscoInfos(self.parent, from_jid)
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souliane <souliane@mailoo.org>
parents: 1232
diff changeset
166 d.addCallbacks(cb, eb)
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e1842ebcb2f3 core, plugin XEP-0115: discovery refactoring:
Goffi <goffi@goffi.org>
parents: 941
diff changeset
167 # TODO: me must manage the full algorithm described at XEP-0115 #5.4 part 3