Mercurial > libervia-backend
annotate src/plugins/plugin_xep_0054.py @ 1723:5632c5350296
core: avoid initialisation blocking when a long callback is added to backend.initialised (could prevent sessions starting)
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Mon, 07 Dec 2015 13:10:44 +0100 |
| parents | 7226280e70da |
| children | d17772b0fe22 |
| rev | line source |
|---|---|
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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 managing xep-0054 |
| 1396 | 5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Jérôme Poisson (goffi@goffi.org) |
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6 # Copyright (C) 2014 Emmanuel Gil Peyrot (linkmauve@linkmauve.fr) |
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7 |
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8 # This program is free software: you can redistribute it and/or modify |
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9 # it under the terms of the GNU Affero General Public License as published by |
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10 # the Free Software Foundation, either version 3 of the License, or |
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11 # (at your option) any later version. |
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12 |
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13 # This program is distributed in the hope that it will be useful, |
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14 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 # GNU Affero General Public License for more details. |
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17 |
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18 # You should have received a copy of the GNU Affero General Public License |
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19 # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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20 |
| 771 | 21 from sat.core.i18n import _ |
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22 from sat.core.constants import Const as C |
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23 from sat.core.log import getLogger |
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24 log = getLogger(__name__) |
| 939 | 25 from twisted.internet import threads, defer |
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26 from twisted.words.protocols.jabber import jid |
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27 from twisted.words.protocols.jabber.xmlstream import IQ |
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28 from twisted.words.xish import domish |
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29 from twisted.python.failure import Failure |
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30 import os.path |
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31 |
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32 from zope.interface import implements |
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33 |
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34 from wokkel import disco, iwokkel |
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35 |
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36 from base64 import b64decode, b64encode |
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37 from hashlib import sha1 |
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38 from sat.core import exceptions |
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39 from sat.memory import persistent |
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40 try: |
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41 from PIL import Image |
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42 except: |
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43 raise exceptions.MissingModule(u"Missing module pillow, please download/install it from https://python-pillow.github.io") |
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44 from cStringIO import StringIO |
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45 |
| 48 | 46 try: |
| 47 from twisted.words.protocols.xmlstream import XMPPHandler | |
| 48 except ImportError: | |
| 49 from wokkel.subprotocols import XMPPHandler | |
| 50 | |
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51 AVATAR_PATH = "avatars" |
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52 AVATAR_DIM = (64, 64) |
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53 |
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54 IQ_GET = '/iq[@type="get"]' |
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55 NS_VCARD = 'vcard-temp' |
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56 VCARD_REQUEST = IQ_GET + '/vCard[@xmlns="' + NS_VCARD + '"]' # TODO: manage requests |
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57 |
| 48 | 58 PRESENCE = '/presence' |
| 59 NS_VCARD_UPDATE = 'vcard-temp:x:update' | |
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60 VCARD_UPDATE = PRESENCE + '/x[@xmlns="' + NS_VCARD_UPDATE + '"]' |
| 48 | 61 |
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62 CACHED_DATA = {'avatar', 'nick'} |
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63 |
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64 PLUGIN_INFO = { |
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65 "name": "XEP 0054 Plugin", |
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66 "import_name": "XEP-0054", |
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67 "type": "XEP", |
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68 "protocols": ["XEP-0054", "XEP-0153"], |
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69 "dependencies": [], |
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70 "recommendations": ["XEP-0045"], |
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71 "main": "XEP_0054", |
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72 "handler": "yes", |
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73 "description": _("""Implementation of vcard-temp""") |
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74 } |
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75 |
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76 |
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77 class XEP_0054(object): |
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78 #TODO: - check that nickname is ok |
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79 # - refactor the code/better use of Wokkel |
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80 # - get missing values |
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81 |
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82 def __init__(self, host): |
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83 log.info(_("Plugin XEP_0054 initialization")) |
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84 self.host = host |
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85 self.avatar_path = os.path.join(self.host.memory.getConfig('', 'local_dir'), AVATAR_PATH) |
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86 if not os.path.exists(self.avatar_path): |
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87 os.makedirs(self.avatar_path) |
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88 self.cache = {} |
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89 host.bridge.addMethod("getCard", ".plugin", in_sign='ss', out_sign='s', method=self._getCard) |
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90 host.bridge.addMethod("getAvatarFile", ".plugin", in_sign='s', out_sign='s', method=self.getAvatarFile) |
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91 host.bridge.addMethod("setAvatar", ".plugin", in_sign='ss', out_sign='', method=self.setAvatar, async=True) |
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92 host.trigger.add("presence_available", self.presenceAvailableTrigger) |
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93 host.memory.setSignalOnUpdate("avatar") |
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94 host.memory.setSignalOnUpdate("nick") |
| 64 | 95 |
| 72 | 96 def getHandler(self, profile): |
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97 return XEP_0054_handler(self) |
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98 |
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99 def presenceAvailableTrigger(self, presence_elt, client): |
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100 if client.jid.userhost() in self.cache[client.profile]: |
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101 try: |
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102 avatar_hash = self.cache[client.profile][client.jid.userhost()]['avatar'] |
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103 except KeyError: |
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104 log.info(u"No avatar in cache for {}".format(client.jid.userhost())) |
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105 return True |
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106 x_elt = domish.Element((NS_VCARD_UPDATE, 'x')) |
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107 x_elt.addElement('photo', content=avatar_hash) |
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108 presence_elt.addChild(x_elt) |
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109 |
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110 return True |
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111 |
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112 def isInRoom(self, entity_jid, profile): |
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113 """Tell if an full jid is a member of a room |
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114 |
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115 @param entity_jid(jid.JID): full jid of the entity |
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116 @return (bool): True if the bare jid of the entity is a room jid |
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117 """ |
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118 try: |
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119 return self.host.plugins['XEP-0045'].isRoom(entity_jid.userhostJID(), profile_key=profile) |
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120 except KeyError: |
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121 return False |
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122 |
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123 def _fillCachedValues(self, profile): |
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124 #FIXME: this is really suboptimal, need to be reworked |
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125 # the current naive approach keeps a map between all jids of all profiles |
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126 # in persistent cache, then put avatar hashs in memory. |
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127 # Hashes should be shared between profiles |
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128 for jid_s, data in self.cache[profile].iteritems(): |
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129 jid_ = jid.JID(jid_s) |
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130 for name in CACHED_DATA: |
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131 try: |
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132 self.host.memory.updateEntityData(jid_, name, data[name], silent=True, profile_key=profile) |
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133 except KeyError: |
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134 pass |
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135 |
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136 @defer.inlineCallbacks |
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137 def profileConnecting(self, profile): |
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138 self.cache[profile] = persistent.PersistentBinaryDict(NS_VCARD, profile) |
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139 yield self.cache[profile].load() |
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140 self._fillCachedValues(profile) |
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141 |
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142 def profileDisconnected(self, profile): |
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143 log.debug(u"Deleting profile cache for avatars") |
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144 del self.cache[profile] |
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145 |
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146 def updateCache(self, jid_, name, value, profile): |
| 48 | 147 """update cache value |
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148 |
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149 save value in memory in case of change |
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150 @param jid_(jid.JID): jid of the owner of the vcard |
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151 @param name(str): name of the item which changed |
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152 @param value(unicode): new value of the item |
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153 @param profile(unicode): profile which received the update |
| 48 | 154 """ |
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155 if jid_.resource: |
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156 if not self.isInRoom(jid_, profile): |
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157 # VCard are retrieved with bare jid |
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158 # but MUC room is a special case |
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159 jid_ = jid.userhostJID() |
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160 |
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161 self.host.memory.updateEntityData(jid_, name, value, profile_key=profile) |
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162 if name in CACHED_DATA: |
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163 jid_s = jid_.userhost() |
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164 self.cache[profile].setdefault(jid_s, {})[name] = value |
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165 self.cache[profile].force(jid_s) |
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166 |
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167 def getCache(self, entity_jid, name, profile): |
| 48 | 168 """return cached value for jid |
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169 |
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170 @param entity_jid: target contact |
| 48 | 171 @param name: name of the value ('nick' or 'avatar') |
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172 @param profile: %(doc_profile)s |
| 48 | 173 @return: wanted value or None""" |
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174 if entity_jid.resource: |
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175 if not self.isInRoom(entity_jid, profile): |
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176 # VCard are retrieved with bare jid |
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177 # but MUC room is a special case |
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178 entity_jid = jid.userhostJID() |
| 48 | 179 try: |
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180 data = self.host.memory.getEntityData(entity_jid, [name], profile) |
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181 except exceptions.UnknownEntityError: |
| 48 | 182 return None |
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183 return data.get(name) |
| 48 | 184 |
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185 def _getFilename(self, hash_): |
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186 """Get filename from hash |
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187 |
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188 @param hash_: hash of the avatar |
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189 @return (str): absolute filename of the avatar |
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190 """ |
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191 return os.path.join(self.avatar_path, hash_) |
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192 |
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193 def saveAvatarFile(self, data, hash_): |
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194 """Save the avatar picture if it doesn't already exists |
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195 |
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196 @param data(str): binary image of the avatar |
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197 @param hash_(str): hash of the binary data (will be used for the filename) |
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198 """ |
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199 filename = self._getFilename(hash_) |
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200 if not os.path.exists(filename): |
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201 with open(filename, 'wb') as file_: |
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202 file_.write(data) |
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203 log.debug(_(u"file saved to %s") % hash_) |
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204 else: |
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205 log.debug(_(u"file [%s] already in cache") % hash_) |
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206 |
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207 def savePhoto(self, photo_xml): |
|
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208 """Parse a <PHOTO> elem and save the picture""" |
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209 for elem in photo_xml.elements(): |
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210 if elem.name == 'TYPE': |
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211 log.debug(_(u'Photo of type [%s] found') % str(elem)) |
|
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212 if elem.name == 'BINVAL': |
|
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213 log.debug(_('Decoding binary')) |
|
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214 decoded = b64decode(str(elem)) |
|
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215 image_hash = sha1(decoded).hexdigest() |
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216 self.saveAvatarFile(decoded, image_hash) |
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217 return image_hash |
|
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218 |
| 939 | 219 @defer.inlineCallbacks |
|
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220 def vCard2Dict(self, vcard, target, profile): |
|
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221 """Convert a VCard to a dict, and save binaries""" |
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222 log.debug(_("parsing vcard")) |
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223 dictionary = {} |
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224 |
|
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225 for elem in vcard.elements(): |
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226 if elem.name == 'FN': |
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227 dictionary['fullname'] = unicode(elem) |
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228 elif elem.name == 'NICKNAME': |
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229 dictionary['nick'] = unicode(elem) |
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230 self.updateCache(target, 'nick', dictionary['nick'], profile) |
|
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231 elif elem.name == 'URL': |
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232 dictionary['website'] = unicode(elem) |
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233 elif elem.name == 'EMAIL': |
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234 dictionary['email'] = unicode(elem) |
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235 elif elem.name == 'BDAY': |
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236 dictionary['birthday'] = unicode(elem) |
|
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237 elif elem.name == 'PHOTO': |
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238 dictionary["avatar"] = yield threads.deferToThread(self.savePhoto, elem) |
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239 if not dictionary["avatar"]: # can happen in case of e.g. empty photo elem |
| 48 | 240 del dictionary['avatar'] |
| 241 else: | |
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242 self.updateCache(target, 'avatar', dictionary['avatar'], profile) |
|
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243 else: |
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244 log.info(_('FIXME: [%s] VCard tag is not managed yet') % elem.name) |
|
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245 |
|
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246 # if a data in cache doesn't exist anymore, we need to reset it |
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247 # so we check CACHED_DATA no gotten (i.e. not in dictionary keys) |
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248 # and we reset them |
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249 for datum in CACHED_DATA.difference(dictionary.keys()): |
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250 log.debug(u"reseting vcard datum [{datum}] for {entity}".format(datum=datum, entity=target.full())) |
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251 self.updateCache(target, datum, '', profile) |
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252 |
| 939 | 253 defer.returnValue(dictionary) |
|
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254 |
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255 def _VCardCb(self, answer, profile): |
|
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256 """Called after the first get IQ""" |
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257 log.debug(_("VCard found")) |
|
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258 |
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259 if answer.firstChildElement().name == "vCard": |
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260 _jid, steam = self.host.getJidNStream(profile) |
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261 try: |
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262 from_jid = jid.JID(answer["from"]) |
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263 except KeyError: |
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264 from_jid = _jid.userhostJID() |
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265 d = self.vCard2Dict(answer.firstChildElement(), from_jid, profile) |
|
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266 d.addCallback(lambda data: self.host.bridge.actionResult("RESULT", answer['id'], data, profile)) |
|
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267 else: |
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268 log.error(_("FIXME: vCard not found as first child element")) |
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269 self.host.bridge.actionResult("SUPPRESS", answer['id'], {}, profile) # FIXME: maybe an error message would be better |
|
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270 |
|
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271 def _VCardEb(self, failure, profile): |
|
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272 """Called when something is wrong with registration""" |
|
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273 try: |
|
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274 self.host.bridge.actionResult("SUPPRESS", failure.value.stanza['id'], {}, profile) # FIXME: maybe an error message would be better |
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275 log.warning(_(u"Can't find VCard of %s") % failure.value.stanza['from']) |
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276 self.updateCache(jid.JID(failure.value.stanza['from']), "avatar", '', profile) |
|
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277 except (AttributeError, KeyError): |
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278 # 'ConnectionLost' object has no attribute 'stanza' + sometimes 'from' key doesn't exist |
|
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279 log.warning(_(u"Can't find VCard: %s") % failure.getErrorMessage()) |
|
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280 |
|
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281 def _getCard(self, target_s, profile_key=C.PROF_KEY_NONE): |
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282 return self.getCard(jid.JID(target_s), profile_key) |
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283 |
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284 def getCard(self, target, profile_key=C.PROF_KEY_NONE): |
|
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285 """Ask server for VCard |
|
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286 |
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287 @param target(jid.JID): jid from which we want the VCard |
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288 @result: id to retrieve the profile |
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289 """ |
| 64 | 290 current_jid, xmlstream = self.host.getJidNStream(profile_key) |
| 291 if not xmlstream: | |
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292 raise exceptions.ProfileUnknownError('Asking vcard for a non-existant or not connected profile ({})'.format(profile_key)) |
|
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293 profile = self.host.memory.getProfileName(profile_key) |
|
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294 to_jid = target.userhostJID() |
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295 log.debug(_(u"Asking for %s's VCard") % to_jid.userhost()) |
|
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296 reg_request = IQ(xmlstream, 'get') |
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297 reg_request["from"] = current_jid.full() |
| 48 | 298 reg_request["to"] = to_jid.userhost() |
|
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65ecbb473cbb
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299 reg_request.addElement('vCard', NS_VCARD) |
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300 reg_request.send(to_jid.userhost()).addCallbacks(self._VCardCb, self._VCardEb, callbackArgs=[profile], errbackArgs=[profile]) |
|
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301 return reg_request["id"] |
|
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302 |
|
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303 def getAvatarFile(self, avatar_hash): |
| 43 | 304 """Give the full path of avatar from hash |
| 305 @param hash: SHA1 hash | |
| 306 @return full_path | |
| 307 """ | |
|
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|
308 filename = self.avatar_path + '/' + avatar_hash |
| 43 | 309 if not os.path.exists(filename): |
|
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310 log.error(_(u"Asking for an uncached avatar [%s]") % avatar_hash) |
| 43 | 311 return "" |
| 312 return filename | |
| 313 | |
|
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314 def _buildSetAvatar(self, vcard_set, filepath): |
|
562
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315 try: |
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316 img = Image.open(filepath) |
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317 except IOError: |
|
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318 return Failure(exceptions.DataError("Can't open image")) |
|
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319 |
|
1081
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320 if img.size != AVATAR_DIM: |
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|
321 img.thumbnail(AVATAR_DIM, Image.ANTIALIAS) |
|
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322 if img.size[0] != img.size[1]: # we need to crop first |
|
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323 left, upper = (0, 0) |
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|
324 right, lower = img.size |
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changeset
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325 offset = abs(right - lower) / 2 |
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|
326 if right == min(img.size): |
|
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|
327 upper += offset |
|
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|
328 lower -= offset |
|
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|
329 else: |
|
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|
330 left += offset |
|
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|
331 right -= offset |
|
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|
332 img = img.crop((left, upper, right, lower)) |
|
562
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|
333 img_buf = StringIO() |
|
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|
334 img.save(img_buf, 'PNG') |
|
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335 |
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336 vcard_elt = vcard_set.addElement('vCard', NS_VCARD) |
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337 photo_elt = vcard_elt.addElement('PHOTO') |
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338 photo_elt.addElement('TYPE', content='image/png') |
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339 photo_elt.addElement('BINVAL', content=b64encode(img_buf.getvalue())) |
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340 img_hash = sha1(img_buf.getvalue()).hexdigest() |
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341 self.saveAvatarFile(img_buf.getvalue(), img_hash) |
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342 return (vcard_set, img_hash) |
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343 |
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344 def setAvatar(self, filepath, profile_key=C.PROF_KEY_NONE): |
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345 """Set avatar of the profile |
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346 @param filepath: path of the image of the avatar""" |
| 1199 | 347 #TODO: This is a temporary way of setting the avatar, as other VCard information is not managed. |
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348 # A proper full VCard management should be done (and more generaly a public/private profile) |
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349 client = self.host.getClient(profile_key) |
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350 |
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351 vcard_set = IQ(client.xmlstream, 'set') |
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352 d = threads.deferToThread(self._buildSetAvatar, vcard_set, filepath) |
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353 |
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354 def elementBuilt(result): |
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355 """Called once the image is at the right size/format, and the vcard set element is build""" |
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356 set_avatar_elt, img_hash = result |
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357 self.updateCache(client.jid.userhostJID(), 'avatar', img_hash, client.profile) |
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358 return set_avatar_elt.send().addCallback(lambda ignore: client.presence.available()) # FIXME: should send the current presence, not always "available" ! |
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359 |
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360 d.addCallback(elementBuilt) |
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361 |
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362 return d |
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363 |
| 64 | 364 |
| 365 class XEP_0054_handler(XMPPHandler): | |
| 366 implements(iwokkel.IDisco) | |
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367 |
| 64 | 368 def __init__(self, plugin_parent): |
| 369 self.plugin_parent = plugin_parent | |
| 370 self.host = plugin_parent.host | |
| 371 | |
| 372 def connectionInitialized(self): | |
| 373 self.xmlstream.addObserver(VCARD_UPDATE, self.update) | |
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374 |
| 64 | 375 def getDiscoInfo(self, requestor, target, nodeIdentifier=''): |
| 376 return [disco.DiscoFeature(NS_VCARD)] | |
| 377 | |
| 378 def getDiscoItems(self, requestor, target, nodeIdentifier=''): | |
| 379 return [] | |
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380 |
| 48 | 381 def update(self, presence): |
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382 """Called on <presence/> stanza with vcard data |
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383 |
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384 Check for avatar information, and get VCard if needed |
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385 @param presend(domish.Element): <presence/> stanza |
| 48 | 386 """ |
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387 from_jid = jid.JID(presence['from']) |
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388 if from_jid.resource and not self.plugin_parent.isInRoom(from_jid, self.parent.profile): |
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389 from_jid = from_jid.userhostJID() |
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390 #FIXME: wokkel's data_form should be used here |
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391 try: |
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392 x_elt = presence.elements(NS_VCARD_UPDATE, 'x').next() |
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393 except StopIteration: |
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394 return |
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395 |
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396 try: |
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397 photo_elt = x_elt.elements(NS_VCARD_UPDATE, 'photo').next() |
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398 except StopIteration: |
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399 return |
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400 |
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401 hash_ = str(photo_elt) |
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402 if not hash_: |
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403 return |
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404 old_avatar = self.plugin_parent.getCache(from_jid, 'avatar', self.parent.profile) |
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405 filename = self.plugin_parent._getFilename(hash_) |
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406 if not old_avatar or old_avatar != hash_: |
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407 if os.path.exists(filename): |
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408 log.debug(u"New avatar found for [{}], it's already in cache, we use it".format(from_jid.full())) |
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409 self.plugin_parent.updateCache(from_jid, 'avatar', hash_, self.parent.profile) |
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410 else: |
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411 log.debug(u'New avatar found for [{}], requesting vcard'.format(from_jid.full())) |
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412 self.plugin_parent.getCard(from_jid, self.parent.profile) |
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413 else: |
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414 if os.path.exists(filename): |
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415 log.debug(u"avatar for {} already in cache".format(from_jid.full())) |
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416 else: |
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417 log.error(u"Avatar for [{}] should be in cache but it is not ! We get it".format(from_jid.full())) |
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418 self.plugin_parent.getCard(from_jid, self.parent.profile) |
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419 |