Mercurial > libervia-backend
annotate src/plugins/plugin_xep_0054.py @ 568:239abc5484c9
bridge: generic plugin methods handling for frontend side in D-Bus Bridge \o/
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Mon, 07 Jan 2013 01:01:10 +0100 |
| parents | 0bb2e0d1c878 |
| children | bf1505df088c |
| 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 """ |
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5 SAT plugin for managing xep-0054 |
| 459 | 6 Copyright (C) 2009, 2010, 2011, 2012 Jérôme Poisson (goffi@goffi.org) |
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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 """ |
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21 |
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22 from logging import debug, info, error |
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23 from twisted.internet import threads |
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24 from twisted.internet.defer import inlineCallbacks, returnValue |
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25 from twisted.words.protocols.jabber import jid |
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26 from twisted.words.protocols.jabber.xmlstream import IQ |
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27 from twisted.words.xish import domish |
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28 import os.path |
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29 |
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30 from zope.interface import implements |
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31 |
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32 from wokkel import disco, iwokkel |
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33 |
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34 from base64 import b64decode,b64encode |
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35 from hashlib import sha1 |
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36 from sat.core import exceptions |
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37 from sat.memory.persistent import PersistentDict |
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38 import Image |
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39 from cStringIO import StringIO |
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40 |
| 48 | 41 try: |
| 42 from twisted.words.protocols.xmlstream import XMPPHandler | |
| 43 except ImportError: | |
| 44 from wokkel.subprotocols import XMPPHandler | |
| 45 | |
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46 AVATAR_PATH = "avatars" |
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47 |
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48 IQ_GET = '/iq[@type="get"]' |
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49 NS_VCARD = 'vcard-temp' |
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50 VCARD_REQUEST = IQ_GET + '/vCard[@xmlns="' + NS_VCARD + '"]' #TODO: manage requests |
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51 |
| 48 | 52 PRESENCE = '/presence' |
| 53 NS_VCARD_UPDATE = 'vcard-temp:x:update' | |
| 54 VCARD_UPDATE = PRESENCE + '/x[@xmlns="' + NS_VCARD_UPDATE + '"]' | |
| 55 | |
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56 PLUGIN_INFO = { |
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57 "name": "XEP 0054 Plugin", |
| 291 | 58 "import_name": "XEP-0054", |
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59 "type": "XEP", |
| 48 | 60 "protocols": ["XEP-0054", "XEP-0153"], |
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61 "dependencies": [], |
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62 "main": "XEP_0054", |
| 64 | 63 "handler": "yes", |
| 69 | 64 "description": _("""Implementation of vcard-temp""") |
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65 } |
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66 |
| 64 | 67 class XEP_0054(): |
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68 #TODO: - check that nickname is ok |
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69 # - refactor the code/better use of Wokkel |
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70 # - get missing values |
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71 |
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72 def __init__(self, host): |
| 69 | 73 info(_("Plugin XEP_0054 initialization")) |
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74 self.host = host |
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75 self.avatar_path = os.path.join(self.host.memory.getConfig('', 'local_dir'), AVATAR_PATH) |
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76 if not os.path.exists(self.avatar_path): |
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77 os.makedirs(self.avatar_path) |
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78 self.avatars_cache = PersistentDict(NS_VCARD) |
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79 self.avatars_cache.load() #FIXME: resulting deferred must be correctly managed |
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80 host.bridge.addMethod("getCard", ".plugin", in_sign='ss', out_sign='s', method=self.getCard) |
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81 host.bridge.addMethod("getAvatarFile", ".plugin", in_sign='s', out_sign='s', method=self.getAvatarFile) |
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82 host.bridge.addMethod("setAvatar", ".plugin", in_sign='ss', out_sign='', method=self.setAvatar, async = True) |
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83 host.trigger.add("presence_available", self.presenceTrigger) |
| 64 | 84 |
| 72 | 85 def getHandler(self, profile): |
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86 return XEP_0054_handler(self) |
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87 |
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88 def presenceTrigger(self, presence_elt, client): |
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89 if client.jid.userhost() in self.avatars_cache: |
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90 x_elt = domish.Element((NS_VCARD_UPDATE, 'x')) |
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91 x_elt.addElement('photo', content=self.avatars_cache[client.jid.userhost()]) |
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92 presence_elt.addChild(x_elt) |
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93 |
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94 return True |
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95 |
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96 def _fillCachedValues(self, result, client): |
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97 #FIXME: this is really suboptimal, need to be reworked |
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98 # the current naive approach keeps a map between all jids of all profiles |
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99 # in persistent cache, and check if cached jid are in roster, then put avatar |
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100 # hashs in memory. |
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101 for _jid in client.roster.getBareJids() + [client.jid.userhost()]: |
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102 if _jid in self.avatars_cache: |
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103 self.host.memory.updateEntityData(jid.JID(_jid), "avatar", self.avatars_cache[_jid], client.profile) |
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104 |
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105 def profileConnected(self, profile): |
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106 client = self.host.getClient(profile) |
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107 client.roster.got_roster.addCallback(self._fillCachedValues, client) |
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108 |
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109 def update_cache(self, jid, name, value, profile): |
| 48 | 110 """update cache value |
| 111 - save value in memory in case of change | |
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112 @param jid: jid of the owner of the vcard |
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113 @param name: name of the item which changed |
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114 @param value: new value of the item |
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115 @param profile: profile which received the update |
| 48 | 116 """ |
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117 try: |
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118 cached = self.host.memory.getEntityData(jid, [name], profile) |
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119 except exceptions.UnknownEntityError: |
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120 cached = {} |
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121 if not name in cached or cached[name] != value: |
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122 self.host.memory.updateEntityData(jid, name, value, profile) |
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123 if name == "avatar": |
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124 self.avatars_cache[jid.userhost()] = value |
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125 |
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126 def get_cache(self, jid, name, profile): |
| 48 | 127 """return cached value for jid |
| 128 @param jid: target contact | |
| 129 @param name: name of the value ('nick' or 'avatar') | |
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130 @param profile: %(doc_profile)s |
| 48 | 131 @return: wanted value or None""" |
| 132 try: | |
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133 data = self.host.memory.getEntityData(jid, [name], profile) |
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134 except exceptions.UnknownEntityError: |
| 48 | 135 return None |
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136 return data.get(name) |
| 48 | 137 |
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138 def save_photo(self, photo_xml): |
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139 """Parse a <PHOTO> elem and save the picture""" |
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140 for elem in photo_xml.elements(): |
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141 if elem.name == 'TYPE': |
| 69 | 142 info(_('Photo of type [%s] found') % str(elem)) |
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143 if elem.name == 'BINVAL': |
| 69 | 144 debug(_('Decoding binary')) |
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145 decoded = b64decode(str(elem)) |
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146 image_hash = sha1(decoded).hexdigest() |
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147 filename = self.avatar_path+'/'+image_hash |
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148 if not os.path.exists(filename): |
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149 with open(filename,'wb') as file: |
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150 file.write(decoded) |
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151 debug(_("file saved to %s") % image_hash) |
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152 else: |
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153 debug(_("file [%s] already in cache") % image_hash) |
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154 return image_hash |
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155 |
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156 @inlineCallbacks |
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157 def vCard2Dict(self, vcard, target, profile): |
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158 """Convert a VCard to a dict, and save binaries""" |
| 69 | 159 debug (_("parsing vcard")) |
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160 dictionary = {} |
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161 |
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162 for elem in vcard.elements(): |
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163 if elem.name == 'FN': |
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164 dictionary['fullname'] = unicode(elem) |
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165 elif elem.name == 'NICKNAME': |
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166 dictionary['nick'] = unicode(elem) |
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167 self.update_cache(target, 'nick', dictionary['nick'], profile) |
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168 elif elem.name == 'URL': |
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169 dictionary['website'] = unicode(elem) |
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170 elif elem.name == 'EMAIL': |
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171 dictionary['email'] = unicode(elem) |
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172 elif elem.name == 'BDAY': |
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173 dictionary['birthday'] = unicode(elem) |
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174 elif elem.name == 'PHOTO': |
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175 dictionary["avatar"] = yield threads.deferToThread(self.save_photo, elem) |
| 48 | 176 if not dictionary["avatar"]: #can happen in case of e.g. empty photo elem |
| 177 del dictionary['avatar'] | |
| 178 else: | |
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179 self.update_cache(target, 'avatar', dictionary['avatar'], profile) |
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180 else: |
| 69 | 181 info (_('FIXME: [%s] VCard tag is not managed yet') % elem.name) |
|
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182 |
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183 returnValue(dictionary) |
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184 |
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185 def vcard_ok(self, answer, profile): |
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186 """Called after the first get IQ""" |
| 69 | 187 debug (_("VCard found")) |
|
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188 |
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189 if answer.firstChildElement().name == "vCard": |
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190 _jid, steam = self.host.getJidNStream(profile) |
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191 try: |
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192 from_jid = jid.JID(answer["from"]) |
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193 except KeyError: |
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194 from_jid = _jid.userhostJID() |
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195 d = self.vCard2Dict(answer.firstChildElement(), from_jid, profile) |
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196 d.addCallback(lambda data: self.host.bridge.actionResult("RESULT", answer['id'], data, profile)) |
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197 else: |
| 69 | 198 error (_("FIXME: vCard not found as first child element")) |
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199 self.host.bridge.actionResult("SUPPRESS", answer['id'], {}, profile) #FIXME: maybe an error message would be better |
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200 |
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201 def vcard_err(self, failure, profile): |
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202 """Called when something is wrong with registration""" |
| 69 | 203 error (_("Can't find VCard of %s") % failure.value.stanza['from']) |
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204 self.host.bridge.actionResult("SUPPRESS", failure.value.stanza['id'], {}, profile) #FIXME: maybe an error message would be better |
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205 |
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206 def getCard(self, target_s, profile_key='@DEFAULT@'): |
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207 """Ask server for VCard |
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208 @param target_s: jid from which we want the VCard |
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209 @result: id to retrieve the profile""" |
| 64 | 210 current_jid, xmlstream = self.host.getJidNStream(profile_key) |
| 211 if not xmlstream: | |
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212 error (_('Asking vcard for a non-existant or not connected profile')) |
| 64 | 213 return "" |
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214 profile = self.host.memory.getProfileName(profile_key) |
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215 to_jid = jid.JID(target_s) |
| 69 | 216 debug(_("Asking for %s's VCard") % to_jid.userhost()) |
| 64 | 217 reg_request=IQ(xmlstream,'get') |
| 218 reg_request["from"]=current_jid.full() | |
| 48 | 219 reg_request["to"] = to_jid.userhost() |
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220 reg_request.addElement('vCard', NS_VCARD) |
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221 reg_request.send(to_jid.userhost()).addCallbacks(self.vcard_ok, self.vcard_err, callbackArgs=[profile], errbackArgs=[profile]) |
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222 return reg_request["id"] |
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223 |
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224 def getAvatarFile(self, avatar_hash): |
| 43 | 225 """Give the full path of avatar from hash |
| 226 @param hash: SHA1 hash | |
| 227 @return full_path | |
| 228 """ | |
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229 filename = self.avatar_path+'/'+avatar_hash |
| 43 | 230 if not os.path.exists(filename): |
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231 error (_("Asking for an uncached avatar [%s]") % avatar_hash) |
| 43 | 232 return "" |
| 233 return filename | |
| 234 | |
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235 def _buildSetAvatar(self, vcard_set, filepath): |
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236 try: |
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237 img = Image.open(filepath) |
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238 except IOError: |
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239 raise exceptions.DataError("Can't open image") |
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240 |
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241 if img.size != (64, 64): |
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242 img.resize((64, 64)) |
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243 img_buf = StringIO() |
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244 img.save(img_buf, 'PNG') |
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245 |
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246 vcard_elt = vcard_set.addElement('vCard', NS_VCARD) |
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247 photo_elt = vcard_elt.addElement('PHOTO') |
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248 photo_elt.addElement('TYPE', content='image/png') |
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249 photo_elt.addElement('BINVAL', content=b64encode(img_buf.getvalue())) |
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250 img_hash = sha1(img_buf.getvalue()).hexdigest() |
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251 return (vcard_set, img_hash) |
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252 |
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253 def setAvatar(self, filepath, profile_key='@DEFAULT@'): |
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254 """Set avatar of the profile |
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255 @param filepath: path of the image of the avatar""" |
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256 #TODO: This is a temporary way of setting avatar, as other VCard informations are not managed. |
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257 # A proper full VCard management should be done (and more generaly a public/private profile) |
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258 client = self.host.getClient(profile_key) |
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259 if not client: |
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260 raise exceptions.NotConnectedProfileError(_('Trying to set avatar for a non-existant or not connected profile')) |
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261 |
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262 vcard_set = IQ(client.xmlstream,'set') |
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263 d = threads.deferToThread(self._buildSetAvatar, vcard_set, filepath) |
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264 |
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265 def elementBuilt(result): |
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266 """Called once the image is at the right size/format, and the vcard set element is build""" |
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267 set_avatar_elt, img_hash = result |
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268 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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269 # element with the right hash |
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270 return set_avatar_elt.send().addCallback(lambda ignore: client.presence.available()) |
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271 |
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272 d.addCallback(elementBuilt) |
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273 |
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274 return d |
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275 |
| 64 | 276 |
| 277 class XEP_0054_handler(XMPPHandler): | |
| 278 implements(iwokkel.IDisco) | |
| 279 | |
| 280 def __init__(self, plugin_parent): | |
| 281 self.plugin_parent = plugin_parent | |
| 282 self.host = plugin_parent.host | |
| 283 | |
| 284 def connectionInitialized(self): | |
| 285 self.xmlstream.addObserver(VCARD_UPDATE, self.update) | |
| 286 | |
| 287 def getDiscoInfo(self, requestor, target, nodeIdentifier=''): | |
| 288 return [disco.DiscoFeature(NS_VCARD)] | |
| 289 | |
| 290 def getDiscoItems(self, requestor, target, nodeIdentifier=''): | |
| 291 return [] | |
| 292 | |
| 48 | 293 def update(self, presence): |
| 294 """Request for VCard's nickname | |
| 295 return the cached nickname if exists, else get VCard | |
| 296 """ | |
| 281 | 297 from_jid = jid.JID(presence['from']) |
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298 #FIXME: wokkel's data_form should be used here |
| 48 | 299 x_elem = filter (lambda x:x.name == "x", presence.elements())[0] #We only want the "x" element |
| 300 for elem in x_elem.elements(): | |
| 301 if elem.name == 'photo': | |
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302 _hash = str(elem) |
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303 old_avatar = self.plugin_parent.get_cache(from_jid, 'avatar', self.parent.profile) |
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304 if not old_avatar or old_avatar != _hash: |
| 69 | 305 debug(_('New avatar found, requesting vcard')) |
| 281 | 306 self.plugin_parent.getCard(from_jid.userhost(), self.parent.profile) |