Mercurial > libervia-backend
annotate src/plugins/plugin_xep_0054.py @ 1316:8adcdf2cdfe1 frontends_multi_profiles
core: added a "profileConnecting" method check:
if a plugin has a profileConnecting method, it will be called when the profile is being connected but before the client stream is started. That can be usefull if things need to be done before the communication is started: e.g. putting triggers, loading PersistentDict, etc.
author | Goffi <goffi@goffi.org> |
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date | Mon, 09 Feb 2015 21:39:51 +0100 |
parents | be3a301540c0 |
children | bd69d341d969 |
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 |
811 | 5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014 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 |
42
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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.persistent import PersistentDict |
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40 from PIL import Image |
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41 from cStringIO import StringIO |
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42 |
48 | 43 try: |
44 from twisted.words.protocols.xmlstream import XMPPHandler | |
45 except ImportError: | |
46 from wokkel.subprotocols import XMPPHandler | |
47 | |
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48 AVATAR_PATH = "avatars" |
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49 AVATAR_DIM = (64, 64) |
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50 |
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51 IQ_GET = '/iq[@type="get"]' |
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52 NS_VCARD = 'vcard-temp' |
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53 VCARD_REQUEST = IQ_GET + '/vCard[@xmlns="' + NS_VCARD + '"]' # TODO: manage requests |
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54 |
48 | 55 PRESENCE = '/presence' |
56 NS_VCARD_UPDATE = 'vcard-temp:x:update' | |
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57 VCARD_UPDATE = PRESENCE + '/x[@xmlns="' + NS_VCARD_UPDATE + '"]' |
48 | 58 |
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59 PLUGIN_INFO = { |
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60 "name": "XEP 0054 Plugin", |
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61 "import_name": "XEP-0054", |
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62 "type": "XEP", |
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63 "protocols": ["XEP-0054", "XEP-0153"], |
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64 "dependencies": [], |
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65 "main": "XEP_0054", |
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66 "handler": "yes", |
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67 "description": _("""Implementation of vcard-temp""") |
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68 } |
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69 |
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70 |
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71 class XEP_0054(object): |
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72 #TODO: - check that nickname is ok |
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73 # - refactor the code/better use of Wokkel |
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74 # - get missing values |
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75 |
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76 def __init__(self, host): |
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77 log.info(_("Plugin XEP_0054 initialization")) |
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78 self.host = host |
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79 self.avatar_path = os.path.join(self.host.memory.getConfig('', 'local_dir'), AVATAR_PATH) |
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80 if not os.path.exists(self.avatar_path): |
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81 os.makedirs(self.avatar_path) |
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82 self.avatars_cache = PersistentDict(NS_VCARD) |
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83 self.initialised = self.avatars_cache.load() # FIXME: resulting deferred must be correctly managed |
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84 host.bridge.addMethod("getCard", ".plugin", in_sign='ss', out_sign='s', method=self.getCard) |
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85 host.bridge.addMethod("getAvatarFile", ".plugin", in_sign='s', out_sign='s', method=self.getAvatarFile) |
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86 host.bridge.addMethod("setAvatar", ".plugin", in_sign='ss', out_sign='', method=self.setAvatar, async=True) |
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87 host.trigger.add("presence_available", self.presenceTrigger) |
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88 host.memory.setSignalOnUpdate("avatar") |
64 | 89 |
72 | 90 def getHandler(self, profile): |
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91 return XEP_0054_handler(self) |
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92 |
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93 def presenceTrigger(self, presence_elt, client): |
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94 if client.jid.userhost() in self.avatars_cache: |
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95 x_elt = domish.Element((NS_VCARD_UPDATE, 'x')) |
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96 x_elt.addElement('photo', content=self.avatars_cache[client.jid.userhost()]) |
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97 presence_elt.addChild(x_elt) |
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98 |
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99 return True |
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100 |
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101 def _fillCachedValues(self, profile): |
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102 #FIXME: this is really suboptimal, need to be reworked |
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103 # the current naive approach keeps a map between all jids of all profiles |
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104 # in persistent cache, then put avatar |
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105 # hashs in memory. Hashed should be shared between profiles |
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106 for jid_s, avatar_hash in self.avatars_cache.iteritems(): |
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107 jid_ = jid.JID(jid_s) |
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108 self.host.memory.updateEntityData(jid_, "avatar", avatar_hash, silent=True, profile_key=profile) |
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109 |
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110 @defer.inlineCallbacks |
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111 def profileConnected(self, profile): |
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112 yield self.initialised |
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113 self._fillCachedValues(profile) |
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114 |
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115 def updateCache(self, jid_, name, value, profile): |
48 | 116 """update cache value |
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117 |
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118 save value in memory in case of change |
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119 @param jid_: jid of the owner of the vcard |
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120 @param name: name of the item which changed |
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121 @param value: new value of the item |
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122 @param profile: profile which received the update |
48 | 123 """ |
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124 assert not jid_.resource # VCard are retrieved with bare jid |
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125 self.host.memory.updateEntityData(jid_, name, value, profile_key=profile) |
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126 if name == "avatar": |
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127 self.avatars_cache[jid_.userhost()] = value |
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128 |
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129 def getCache(self, entity_jid, name, profile): |
48 | 130 """return cached value for jid |
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131 |
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132 @param entity_jid: target contact |
48 | 133 @param name: name of the value ('nick' or 'avatar') |
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134 @param profile: %(doc_profile)s |
48 | 135 @return: wanted value or None""" |
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136 assert not entity_jid.resource # VCard are retrieved with bare jid |
48 | 137 try: |
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138 data = self.host.memory.getEntityData(entity_jid, [name], profile) |
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139 except exceptions.UnknownEntityError: |
48 | 140 return None |
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141 return data.get(name) |
48 | 142 |
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143 def savePhoto(self, photo_xml): |
42
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144 """Parse a <PHOTO> elem and save the picture""" |
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145 for elem in photo_xml.elements(): |
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146 if elem.name == 'TYPE': |
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147 log.debug(_('Photo of type [%s] found') % str(elem)) |
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148 if elem.name == 'BINVAL': |
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149 log.debug(_('Decoding binary')) |
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150 decoded = b64decode(str(elem)) |
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151 image_hash = sha1(decoded).hexdigest() |
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152 filename = self.avatar_path + '/' + image_hash |
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153 if not os.path.exists(filename): |
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154 with open(filename, 'wb') as file_: |
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155 file_.write(decoded) |
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156 log.debug(_("file saved to %s") % image_hash) |
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157 else: |
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158 log.debug(_("file [%s] already in cache") % image_hash) |
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159 return image_hash |
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160 |
939 | 161 @defer.inlineCallbacks |
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162 def vCard2Dict(self, vcard, target, profile): |
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163 """Convert a VCard to a dict, and save binaries""" |
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164 log.debug(_("parsing vcard")) |
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165 dictionary = {} |
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166 |
42
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167 for elem in vcard.elements(): |
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168 if elem.name == 'FN': |
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169 dictionary['fullname'] = unicode(elem) |
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170 elif elem.name == 'NICKNAME': |
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171 dictionary['nick'] = unicode(elem) |
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172 self.updateCache(target, 'nick', dictionary['nick'], profile) |
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173 elif elem.name == 'URL': |
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174 dictionary['website'] = unicode(elem) |
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175 elif elem.name == 'EMAIL': |
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176 dictionary['email'] = unicode(elem) |
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177 elif elem.name == 'BDAY': |
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178 dictionary['birthday'] = unicode(elem) |
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179 elif elem.name == 'PHOTO': |
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180 dictionary["avatar"] = yield threads.deferToThread(self.savePhoto, elem) |
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181 if not dictionary["avatar"]: # can happen in case of e.g. empty photo elem |
48 | 182 del dictionary['avatar'] |
183 else: | |
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184 self.updateCache(target, 'avatar', dictionary['avatar'], profile) |
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185 else: |
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186 log.info(_('FIXME: [%s] VCard tag is not managed yet') % elem.name) |
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187 |
939 | 188 defer.returnValue(dictionary) |
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189 |
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190 def _VCardCb(self, answer, profile): |
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191 """Called after the first get IQ""" |
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192 log.debug(_("VCard found")) |
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193 |
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194 if answer.firstChildElement().name == "vCard": |
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195 _jid, steam = self.host.getJidNStream(profile) |
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196 try: |
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197 from_jid = jid.JID(answer["from"]) |
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198 except KeyError: |
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199 from_jid = _jid.userhostJID() |
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200 d = self.vCard2Dict(answer.firstChildElement(), from_jid, profile) |
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201 d.addCallback(lambda data: self.host.bridge.actionResult("RESULT", answer['id'], data, profile)) |
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202 else: |
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203 log.error(_("FIXME: vCard not found as first child element")) |
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204 self.host.bridge.actionResult("SUPPRESS", answer['id'], {}, profile) # FIXME: maybe an error message would be better |
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205 |
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206 def _VCardEb(self, failure, profile): |
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207 """Called when something is wrong with registration""" |
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208 try: |
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209 log.warning(_("Can't find VCard of %s") % failure.value.stanza['from']) |
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210 self.host.bridge.actionResult("SUPPRESS", failure.value.stanza['id'], {}, profile) # FIXME: maybe an error message would be better |
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211 self.updateCache(jid.JID(failure.value.stanza['from']), "avatar", '', profile) |
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212 except AttributeError: # 'ConnectionLost' object has no attribute 'stanza' |
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213 log.warning(_("Can't find VCard: %s") % failure.getErrorMessage()) |
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214 |
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215 def getCard(self, target_s, profile_key=C.PROF_KEY_NONE): |
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216 """Ask server for VCard |
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217 @param target_s: jid from which we want the VCard |
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218 @result: id to retrieve the profile""" |
64 | 219 current_jid, xmlstream = self.host.getJidNStream(profile_key) |
220 if not xmlstream: | |
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221 raise exceptions.ProfileUnknownError('Asking vcard for a non-existant or not connected profile ({})'.format(profile_key)) |
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222 profile = self.host.memory.getProfileName(profile_key) |
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223 to_jid = jid.JID(target_s) |
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224 log.debug(_("Asking for %s's VCard") % to_jid.userhost()) |
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225 reg_request = IQ(xmlstream, 'get') |
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226 reg_request["from"] = current_jid.full() |
48 | 227 reg_request["to"] = to_jid.userhost() |
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228 reg_request.addElement('vCard', NS_VCARD) |
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229 reg_request.send(to_jid.userhost()).addCallbacks(self._VCardCb, self._VCardEb, callbackArgs=[profile], errbackArgs=[profile]) |
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230 return reg_request["id"] |
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231 |
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232 def getAvatarFile(self, avatar_hash): |
43 | 233 """Give the full path of avatar from hash |
234 @param hash: SHA1 hash | |
235 @return full_path | |
236 """ | |
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237 filename = self.avatar_path + '/' + avatar_hash |
43 | 238 if not os.path.exists(filename): |
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239 log.error(_("Asking for an uncached avatar [%s]") % avatar_hash) |
43 | 240 return "" |
241 return filename | |
242 | |
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243 def _buildSetAvatar(self, vcard_set, filepath): |
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244 try: |
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245 img = Image.open(filepath) |
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246 except IOError: |
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247 return Failure(exceptions.DataError("Can't open image")) |
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248 |
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249 if img.size != AVATAR_DIM: |
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250 img.thumbnail(AVATAR_DIM, Image.ANTIALIAS) |
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251 if img.size[0] != img.size[1]: # we need to crop first |
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252 left, upper = (0, 0) |
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253 right, lower = img.size |
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254 offset = abs(right - lower) / 2 |
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255 if right == min(img.size): |
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256 upper += offset |
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257 lower -= offset |
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258 else: |
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259 left += offset |
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260 right -= offset |
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261 img = img.crop((left, upper, right, lower)) |
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262 img_buf = StringIO() |
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263 img.save(img_buf, 'PNG') |
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264 |
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265 vcard_elt = vcard_set.addElement('vCard', NS_VCARD) |
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266 photo_elt = vcard_elt.addElement('PHOTO') |
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267 photo_elt.addElement('TYPE', content='image/png') |
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268 photo_elt.addElement('BINVAL', content=b64encode(img_buf.getvalue())) |
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269 img_hash = sha1(img_buf.getvalue()).hexdigest() |
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270 return (vcard_set, img_hash) |
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271 |
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272 def setAvatar(self, filepath, profile_key=C.PROF_KEY_NONE): |
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273 """Set avatar of the profile |
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274 @param filepath: path of the image of the avatar""" |
1199 | 275 #TODO: This is a temporary way of setting the avatar, as other VCard information is not managed. |
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276 # A proper full VCard management should be done (and more generaly a public/private profile) |
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277 client = self.host.getClient(profile_key) |
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278 |
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279 vcard_set = IQ(client.xmlstream, 'set') |
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280 d = threads.deferToThread(self._buildSetAvatar, vcard_set, filepath) |
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281 |
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282 def elementBuilt(result): |
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283 """Called once the image is at the right size/format, and the vcard set element is build""" |
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284 set_avatar_elt, img_hash = result |
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285 self.updateCache(client.jid.userhostJID(), 'avatar', img_hash, client.profile) |
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286 return set_avatar_elt.send().addCallback(lambda ignore: client.presence.available()) # FIXME: should send the current presence, not always "available" ! |
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287 |
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288 d.addCallback(elementBuilt) |
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289 |
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290 return d |
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291 |
64 | 292 |
293 class XEP_0054_handler(XMPPHandler): | |
294 implements(iwokkel.IDisco) | |
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295 |
64 | 296 def __init__(self, plugin_parent): |
297 self.plugin_parent = plugin_parent | |
298 self.host = plugin_parent.host | |
299 | |
300 def connectionInitialized(self): | |
301 self.xmlstream.addObserver(VCARD_UPDATE, self.update) | |
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302 |
64 | 303 def getDiscoInfo(self, requestor, target, nodeIdentifier=''): |
304 return [disco.DiscoFeature(NS_VCARD)] | |
305 | |
306 def getDiscoItems(self, requestor, target, nodeIdentifier=''): | |
307 return [] | |
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308 |
48 | 309 def update(self, presence): |
310 """Request for VCard's nickname | |
311 return the cached nickname if exists, else get VCard | |
312 """ | |
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313 # FIXME: doesn't manage MUC correctly |
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314 from_jid = jid.JID(presence['from']).userhostJID() |
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315 #FIXME: wokkel's data_form should be used here |
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316 x_elem = filter(lambda x: x.name == "x", presence.elements())[0] # We only want the "x" element |
48 | 317 for elem in x_elem.elements(): |
318 if elem.name == 'photo': | |
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319 _hash = str(elem) |
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320 old_avatar = self.plugin_parent.getCache(from_jid, 'avatar', self.parent.profile) |
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321 if not old_avatar or old_avatar != _hash: |
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322 log.debug(_('New avatar found, requesting vcard')) |
281 | 323 self.plugin_parent.getCard(from_jid.userhost(), self.parent.profile) |
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324 else: |
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325 log.debug("avatar for {} already in cache".format(from_jid)) |