Mercurial > libervia-backend
annotate src/plugins/plugin_xep_0115.py @ 2473:447c3de6b9e5
plugin merge-requests: fixed "set" method
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Sat, 13 Jan 2018 10:12:15 +0100 |
| parents | 8b37a62336c3 |
| children | 0046283a285d |
| 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) 2009-2017 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 |
| 771 | 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' |
| 953 | 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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39 |
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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_PROTOCOLS: ["XEP-0115"], |
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45 C.PI_DEPENDENCIES: [], |
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46 C.PI_MAIN: "XEP_0115", |
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47 C.PI_HANDLER: "yes", |
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48 C.PI_DESCRIPTION: _("""Implementation of entity capabilities""") |
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49 } |
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50 |
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51 |
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52 class XEP_0115(object): |
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53 cap_hash = None # capabilities hash is class variable as it is common to all profiles |
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54 |
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55 def __init__(self, host): |
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56 log.info(_("Plugin XEP_0115 initialization")) |
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57 self.host = host |
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58 host.trigger.add("Disco handled", self._checkHash) |
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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 def _checkHash(self, disco_d, profile): |
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65 client = self.host.getClient(profile) |
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66 client.caps_optimize = None |
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67 |
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68 if XEP_0115.cap_hash is None: |
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69 disco_d.addCallback(lambda dummy: self.host.hasFeature(client, NS_CAPS_OPTIMIZE)) |
| 953 | 70 def updateOptimize(optimize): |
| 71 client.caps_optimize = optimize | |
| 72 if optimize: | |
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73 log.info(_("Caps optimisation enabled")) |
| 953 | 74 client.caps_sent = False |
| 75 else: | |
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76 log.warning(_("Caps optimisation not available")) |
| 953 | 77 disco_d.addCallback(updateOptimize) |
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78 disco_d.addCallback(lambda dummy: self.recalculateHash(profile)) |
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79 return True |
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80 |
| 953 | 81 def _presenceTrigger(self, client, obj): |
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82 if XEP_0115.cap_hash is not None: |
| 953 | 83 if client.caps_optimize: |
| 84 if client.caps_sent: | |
| 85 return True | |
| 86 client.caps_sent = True | |
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87 obj.addChild(XEP_0115.c_elt) |
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88 return True |
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89 |
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90 @defer.inlineCallbacks |
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91 def recalculateHash(self, profile): |
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92 client = self.host.getClient(profile) |
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93 _infos = yield client.discoHandler.info(client.jid, client.jid, '') |
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94 disco_infos = disco.DiscoInfo() |
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95 for item in _infos: |
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96 disco_infos.append(item) |
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97 cap_hash = self.host.memory.disco.generateHash(disco_infos) |
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98 log.info("Our capability hash has been generated: [%s]" % cap_hash) |
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99 log.debug("Generating capability domish.Element") |
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100 c_elt = domish.Element((NS_ENTITY_CAPABILITY, 'c')) |
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101 c_elt['hash'] = 'sha-1' |
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102 c_elt['node'] = C.APP_URL |
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103 c_elt['ver'] = cap_hash |
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104 XEP_0115.cap_hash = cap_hash |
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105 XEP_0115.c_elt = c_elt |
| 953 | 106 if client.caps_optimize: |
| 107 client.caps_sent = False | |
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108 if cap_hash not in self.host.memory.disco.hashes: |
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109 self.host.memory.disco.hashes[cap_hash] = disco_infos |
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110 self.host.memory.updateEntityData(client.jid, C.ENTITY_CAP_HASH, cap_hash, profile_key=profile) |
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111 |
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112 |
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113 class XEP_0115_handler(XMPPHandler): |
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114 implements(iwokkel.IDisco) |
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115 |
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116 def __init__(self, plugin_parent, profile): |
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117 self.plugin_parent = plugin_parent |
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118 self.host = plugin_parent.host |
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119 self.profile = profile |
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120 |
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121 def connectionInitialized(self): |
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122 self.xmlstream.addObserver(CAPABILITY_UPDATE, self.update) |
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123 |
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124 def getDiscoInfo(self, requestor, target, nodeIdentifier=''): |
| 953 | 125 return [disco.DiscoFeature(NS_ENTITY_CAPABILITY), disco.DiscoFeature(NS_CAPS_OPTIMIZE)] |
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126 |
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127 def getDiscoItems(self, requestor, target, nodeIdentifier=''): |
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128 return [] |
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129 |
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130 def update(self, presence): |
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131 """ |
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132 Manage the capabilities of the entity |
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133 |
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134 Check if we know the version of this capabilities and get the capabilities if necessary |
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135 """ |
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136 from_jid = jid.JID(presence['from']) |
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137 c_elem = presence.elements(NS_ENTITY_CAPABILITY, 'c').next() |
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138 try: |
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139 c_ver = c_elem['ver'] |
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140 c_hash = c_elem['hash'] |
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141 c_node = c_elem['node'] |
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142 except KeyError: |
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143 log.warning(_(u'Received invalid capabilities tag: %s') % c_elem.toXml()) |
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144 return |
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145 |
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146 if c_ver in self.host.memory.disco.hashes: |
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147 # we already know the hash, we update the jid entity |
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148 log.debug(u"hash [%(hash)s] already in cache, updating entity [%(jid)s]" % {'hash': c_ver, 'jid': from_jid.full()}) |
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149 self.host.memory.updateEntityData(from_jid, C.ENTITY_CAP_HASH, c_ver, profile_key=self.profile) |
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150 return |
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151 |
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152 if c_hash != 'sha-1': # unknown hash method |
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153 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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154 |
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155 def cb(dummy): |
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156 computed_hash = self.host.memory.getEntityDatum(from_jid, C.ENTITY_CAP_HASH, self.profile) |
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157 if computed_hash != c_ver: |
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158 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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159 |
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160 def eb(failure): |
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161 if isinstance(failure.value, error.ConnectionDone): |
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162 return |
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163 msg = failure.value.condition if hasattr(failure.value, 'condition') else failure.getErrorMessage() |
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164 log.error(_(u"Couldn't retrieve disco info for {jid}: {error}").format(jid=from_jid.full(), error=msg)) |
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165 |
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166 d = self.host.getDiscoInfos(self.parent, from_jid) |
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167 d.addCallbacks(cb, eb) |
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168 # TODO: me must manage the full algorithm described at XEP-0115 #5.4 part 3 |