Mercurial > libervia-backend
annotate src/plugins/plugin_xep_0054.py @ 1202:101c06fbda31
misc: fixed typos in README
| author | Matteo Cypriani <mcy@lm7.fr> |
|---|---|
| date | Mon, 15 Sep 2014 14:18:27 +0200 |
| parents | 96fb74a4714d |
| children | 8b891f9be183 |
| 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 |
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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.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) |
| 64 | 88 |
| 72 | 89 def getHandler(self, profile): |
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90 return XEP_0054_handler(self) |
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91 |
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92 def presenceTrigger(self, presence_elt, client): |
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93 if client.jid.userhost() in self.avatars_cache: |
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94 x_elt = domish.Element((NS_VCARD_UPDATE, 'x')) |
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95 x_elt.addElement('photo', content=self.avatars_cache[client.jid.userhost()]) |
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96 presence_elt.addChild(x_elt) |
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97 |
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98 return True |
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99 |
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100 def _fillCachedValues(self, result, client): |
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101 #FIXME: this is really suboptimal, need to be reworked |
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102 # the current naive approach keeps a map between all jids of all profiles |
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103 # in persistent cache, and check if cached jid are in roster, then put avatar |
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104 # hashs in memory. |
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105 for _jid in client.roster.getBareJids() + [client.jid.userhost()]: |
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106 if _jid in self.avatars_cache: |
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107 self.host.memory.updateEntityData(jid.JID(_jid), "avatar", self.avatars_cache[_jid], client.profile) |
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108 |
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109 def profileConnected(self, profile): |
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110 client = self.host.getClient(profile) |
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111 client.roster.got_roster.addCallback(self._fillCachedValues, client) |
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112 |
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113 def update_cache(self, jid, name, value, profile): |
| 48 | 114 """update cache value |
| 115 - save value in memory in case of change | |
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116 @param jid: jid of the owner of the vcard |
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117 @param name: name of the item which changed |
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118 @param value: new value of the item |
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119 @param profile: profile which received the update |
| 48 | 120 """ |
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121 try: |
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122 cached = self.host.memory.getEntityData(jid, [name], profile) |
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123 except exceptions.UnknownEntityError: |
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124 cached = {} |
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125 if not name in cached or cached[name] != value: |
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126 self.host.memory.updateEntityData(jid, name, value, profile) |
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127 if name == "avatar": |
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128 self.avatars_cache[jid.userhost()] = value |
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129 |
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130 def get_cache(self, entity_jid, name, profile): |
| 48 | 131 """return cached value for jid |
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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""" |
| 136 try: | |
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137 data = self.host.memory.getEntityData(entity_jid, [name], profile) |
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138 except exceptions.UnknownEntityError: |
| 48 | 139 return None |
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140 return data.get(name) |
| 48 | 141 |
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142 def save_photo(self, photo_xml): |
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143 """Parse a <PHOTO> elem and save the picture""" |
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144 for elem in photo_xml.elements(): |
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145 if elem.name == 'TYPE': |
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146 log.info(_('Photo of type [%s] found') % str(elem)) |
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147 if elem.name == 'BINVAL': |
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148 log.debug(_('Decoding binary')) |
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149 decoded = b64decode(str(elem)) |
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150 image_hash = sha1(decoded).hexdigest() |
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151 filename = self.avatar_path + '/' + image_hash |
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152 if not os.path.exists(filename): |
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153 with open(filename, 'wb') as file_: |
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154 file_.write(decoded) |
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155 log.debug(_("file saved to %s") % image_hash) |
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156 else: |
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157 log.debug(_("file [%s] already in cache") % image_hash) |
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158 return image_hash |
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159 |
| 939 | 160 @defer.inlineCallbacks |
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161 def vCard2Dict(self, vcard, target, profile): |
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162 """Convert a VCard to a dict, and save binaries""" |
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163 log.debug(_("parsing vcard")) |
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164 dictionary = {} |
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165 |
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166 for elem in vcard.elements(): |
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167 if elem.name == 'FN': |
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168 dictionary['fullname'] = unicode(elem) |
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169 elif elem.name == 'NICKNAME': |
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170 dictionary['nick'] = unicode(elem) |
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171 self.update_cache(target, 'nick', dictionary['nick'], profile) |
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172 elif elem.name == 'URL': |
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173 dictionary['website'] = unicode(elem) |
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174 elif elem.name == 'EMAIL': |
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175 dictionary['email'] = unicode(elem) |
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176 elif elem.name == 'BDAY': |
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177 dictionary['birthday'] = unicode(elem) |
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178 elif elem.name == 'PHOTO': |
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179 dictionary["avatar"] = yield threads.deferToThread(self.save_photo, elem) |
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180 if not dictionary["avatar"]: # can happen in case of e.g. empty photo elem |
| 48 | 181 del dictionary['avatar'] |
| 182 else: | |
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183 self.update_cache(target, 'avatar', dictionary['avatar'], profile) |
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184 else: |
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185 log.info(_('FIXME: [%s] VCard tag is not managed yet') % elem.name) |
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186 |
| 939 | 187 defer.returnValue(dictionary) |
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188 |
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189 def vcard_ok(self, answer, profile): |
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190 """Called after the first get IQ""" |
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191 log.debug(_("VCard found")) |
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192 |
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193 if answer.firstChildElement().name == "vCard": |
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194 _jid, steam = self.host.getJidNStream(profile) |
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195 try: |
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196 from_jid = jid.JID(answer["from"]) |
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197 except KeyError: |
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198 from_jid = _jid.userhostJID() |
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199 d = self.vCard2Dict(answer.firstChildElement(), from_jid, profile) |
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200 d.addCallback(lambda data: self.host.bridge.actionResult("RESULT", answer['id'], data, profile)) |
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201 else: |
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202 log.error(_("FIXME: vCard not found as first child element")) |
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203 self.host.bridge.actionResult("SUPPRESS", answer['id'], {}, profile) # FIXME: maybe an error message would be better |
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204 |
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205 def vcard_err(self, failure, profile): |
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206 """Called when something is wrong with registration""" |
|
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207 if failure.value.stanza.hasAttribute("from"): |
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208 log.error(_("Can't find VCard of %s") % failure.value.stanza['from']) |
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209 self.host.bridge.actionResult("SUPPRESS", failure.value.stanza['id'], {}, profile) # FIXME: maybe an error message would be better |
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210 |
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211 def getCard(self, target_s, profile_key=C.PROF_KEY_NONE): |
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212 """Ask server for VCard |
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213 @param target_s: jid from which we want the VCard |
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214 @result: id to retrieve the profile""" |
| 64 | 215 current_jid, xmlstream = self.host.getJidNStream(profile_key) |
| 216 if not xmlstream: | |
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217 log.error(_('Asking vcard for a non-existant or not connected profile')) |
| 64 | 218 return "" |
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219 profile = self.host.memory.getProfileName(profile_key) |
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220 to_jid = jid.JID(target_s) |
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221 log.debug(_("Asking for %s's VCard") % to_jid.userhost()) |
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222 reg_request = IQ(xmlstream, 'get') |
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223 reg_request["from"] = current_jid.full() |
| 48 | 224 reg_request["to"] = to_jid.userhost() |
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225 reg_request.addElement('vCard', NS_VCARD) |
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226 reg_request.send(to_jid.userhost()).addCallbacks(self.vcard_ok, self.vcard_err, callbackArgs=[profile], errbackArgs=[profile]) |
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227 return reg_request["id"] |
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228 |
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229 def getAvatarFile(self, avatar_hash): |
| 43 | 230 """Give the full path of avatar from hash |
| 231 @param hash: SHA1 hash | |
| 232 @return full_path | |
| 233 """ | |
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234 filename = self.avatar_path + '/' + avatar_hash |
| 43 | 235 if not os.path.exists(filename): |
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236 log.error(_("Asking for an uncached avatar [%s]") % avatar_hash) |
| 43 | 237 return "" |
| 238 return filename | |
| 239 | |
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240 def _buildSetAvatar(self, vcard_set, filepath): |
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241 try: |
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242 img = Image.open(filepath) |
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243 except IOError: |
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244 return Failure(exceptions.DataError("Can't open image")) |
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245 |
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246 if img.size != AVATAR_DIM: |
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247 img.thumbnail(AVATAR_DIM, Image.ANTIALIAS) |
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248 if img.size[0] != img.size[1]: # we need to crop first |
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249 left, upper = (0, 0) |
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250 right, lower = img.size |
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251 offset = abs(right - lower) / 2 |
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252 if right == min(img.size): |
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253 upper += offset |
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254 lower -= offset |
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255 else: |
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256 left += offset |
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257 right -= offset |
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258 img = img.crop((left, upper, right, lower)) |
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259 img_buf = StringIO() |
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260 img.save(img_buf, 'PNG') |
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261 |
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262 vcard_elt = vcard_set.addElement('vCard', NS_VCARD) |
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263 photo_elt = vcard_elt.addElement('PHOTO') |
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264 photo_elt.addElement('TYPE', content='image/png') |
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265 photo_elt.addElement('BINVAL', content=b64encode(img_buf.getvalue())) |
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266 img_hash = sha1(img_buf.getvalue()).hexdigest() |
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267 return (vcard_set, img_hash) |
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268 |
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269 def setAvatar(self, filepath, profile_key=C.PROF_KEY_NONE): |
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270 """Set avatar of the profile |
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271 @param filepath: path of the image of the avatar""" |
| 1199 | 272 #TODO: This is a temporary way of setting the avatar, as other VCard information is not managed. |
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273 # A proper full VCard management should be done (and more generaly a public/private profile) |
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274 client = self.host.getClient(profile_key) |
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275 |
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276 vcard_set = IQ(client.xmlstream, 'set') |
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277 d = threads.deferToThread(self._buildSetAvatar, vcard_set, filepath) |
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278 |
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279 def elementBuilt(result): |
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280 """Called once the image is at the right size/format, and the vcard set element is build""" |
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281 set_avatar_elt, img_hash = result |
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282 self.avatars_cache[client.jid.userhost()] = img_hash # we need to update the hash, so we can send a new presence |
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283 # element with the right hash |
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284 return set_avatar_elt.send().addCallback(lambda ignore: client.presence.available()) |
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285 |
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286 d.addCallback(elementBuilt) |
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287 |
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288 return d |
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289 |
| 64 | 290 |
| 291 class XEP_0054_handler(XMPPHandler): | |
| 292 implements(iwokkel.IDisco) | |
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293 |
| 64 | 294 def __init__(self, plugin_parent): |
| 295 self.plugin_parent = plugin_parent | |
| 296 self.host = plugin_parent.host | |
| 297 | |
| 298 def connectionInitialized(self): | |
| 299 self.xmlstream.addObserver(VCARD_UPDATE, self.update) | |
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300 |
| 64 | 301 def getDiscoInfo(self, requestor, target, nodeIdentifier=''): |
| 302 return [disco.DiscoFeature(NS_VCARD)] | |
| 303 | |
| 304 def getDiscoItems(self, requestor, target, nodeIdentifier=''): | |
| 305 return [] | |
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306 |
| 48 | 307 def update(self, presence): |
| 308 """Request for VCard's nickname | |
| 309 return the cached nickname if exists, else get VCard | |
| 310 """ | |
| 281 | 311 from_jid = jid.JID(presence['from']) |
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312 #FIXME: wokkel's data_form should be used here |
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313 x_elem = filter(lambda x: x.name == "x", presence.elements())[0] # We only want the "x" element |
| 48 | 314 for elem in x_elem.elements(): |
| 315 if elem.name == 'photo': | |
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316 _hash = str(elem) |
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317 old_avatar = self.plugin_parent.get_cache(from_jid, 'avatar', self.parent.profile) |
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318 if not old_avatar or old_avatar != _hash: |
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319 log.debug(_('New avatar found, requesting vcard')) |
| 281 | 320 self.plugin_parent.getCard(from_jid.userhost(), self.parent.profile) |