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annotate src/plugins/plugin_xep_0054.py @ 540:47e45a577ab7

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plugin XEP-0096: restored XEP-0065 usage
author Goffi <goffi@goffi.org>
date Mon, 12 Nov 2012 10:55:44 +0100
parents 2c4016921403
children dcec4ba8e72c
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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
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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 import os.path
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28
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29 from zope.interface import implements
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30
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31 from wokkel import disco, iwokkel
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32
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33 from base64 import b64decode
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34 from hashlib import sha1
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35 from sat.core import exceptions
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36
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37 try:
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38 from twisted.words.protocols.xmlstream import XMPPHandler
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39 except ImportError:
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40 from wokkel.subprotocols import XMPPHandler
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41
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42 AVATAR_PATH = "avatars"
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43
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44 IQ_GET = '/iq[@type="get"]'
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45 NS_VCARD = 'vcard-temp'
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46 VCARD_REQUEST = IQ_GET + '/vCard[@xmlns="' + NS_VCARD + '"]' #TODO: manage requests
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47
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48 PRESENCE = '/presence'
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49 NS_VCARD_UPDATE = 'vcard-temp:x:update'
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50 VCARD_UPDATE = PRESENCE + '/x[@xmlns="' + NS_VCARD_UPDATE + '"]'
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51
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52 PLUGIN_INFO = {
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53 "name": "XEP 0054 Plugin",
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54 "import_name": "XEP-0054",
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55 "type": "XEP",
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56 "protocols": ["XEP-0054", "XEP-0153"],
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57 "dependencies": [],
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58 "main": "XEP_0054",
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59 "handler": "yes",
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60 "description": _("""Implementation of vcard-temp""")
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61 }
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62
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63 class XEP_0054():
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64 #TODO: - check that nickname is ok
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65 # - refactor the code/better use of Wokkel
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66 # - get missing values
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67
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68 def __init__(self, host):
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69 info(_("Plugin XEP_0054 initialization"))
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70 self.host = host
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71 self.avatar_path = os.path.join(self.host.memory.getConfig('', 'local_dir'), AVATAR_PATH)
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72 if not os.path.exists(self.avatar_path):
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73 os.makedirs(self.avatar_path)
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74 host.bridge.addMethod("getCard", ".plugin", in_sign='ss', out_sign='s', method=self.getCard)
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75 host.bridge.addMethod("getAvatarFile", ".plugin", in_sign='s', out_sign='s', method=self.getAvatarFile)
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76
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77 def getHandler(self, profile):
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78 return XEP_0054_handler(self)
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79
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80 def update_cache(self, jid, name, value, profile):
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81 """update cache value
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82 - save value in memory in case of change
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83 @param jid: jid of the owner of the vcard
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84 @param name: name of the item which changed
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85 @param value: new value of the item
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86 @param profile: profile which received the update
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87 """
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88 try:
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89 cached = self.host.memory.getEntityData(jid, [name], profile)
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90 except exceptions.UnknownEntityError:
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91 cached = {}
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92 if not name in cached or cached[name] != value:
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93 self.host.memory.updateEntityData(jid, name, value, profile)
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94
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95 def get_cache(self, jid, name, profile):
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96 """return cached value for jid
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97 @param jid: target contact
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98 @param name: name of the value ('nick' or 'avatar')
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99 @param profile: %(doc_profile)s
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100 @return: wanted value or None"""
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101 try:
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102 data = self.host.memory.getEntityData(jid, [name], profile)
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103 except exceptions.UnknownEntityError:
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104 return None
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105 return data.get(name)
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106
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107 def save_photo(self, photo_xml):
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108 """Parse a <PHOTO> elem and save the picture"""
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109 for elem in photo_xml.elements():
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110 if elem.name == 'TYPE':
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111 info(_('Photo of type [%s] found') % str(elem))
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112 if elem.name == 'BINVAL':
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113 debug(_('Decoding binary'))
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114 decoded = b64decode(str(elem))
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115 hash = sha1(decoded).hexdigest()
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116 filename = self.avatar_path+'/'+hash
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117 if not os.path.exists(filename):
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118 with open(filename,'wb') as file:
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119 file.write(decoded)
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120 debug(_("file saved to %s") % hash)
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121 else:
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122 debug(_("file [%s] already in cache") % hash)
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123 return hash
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124
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125 @inlineCallbacks
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126 def vCard2Dict(self, vcard, target, profile):
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127 """Convert a VCard to a dict, and save binaries"""
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128 debug (_("parsing vcard"))
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129 dictionary = {}
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130
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131 for elem in vcard.elements():
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132 if elem.name == 'FN':
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133 dictionary['fullname'] = unicode(elem)
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134 elif elem.name == 'NICKNAME':
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135 dictionary['nick'] = unicode(elem)
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136 self.update_cache(target, 'nick', dictionary['nick'], profile)
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137 elif elem.name == 'URL':
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138 dictionary['website'] = unicode(elem)
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139 elif elem.name == 'EMAIL':
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140 dictionary['email'] = unicode(elem)
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141 elif elem.name == 'BDAY':
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142 dictionary['birthday'] = unicode(elem)
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143 elif elem.name == 'PHOTO':
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144 dictionary["avatar"] = yield threads.deferToThread(self.save_photo, elem)
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145 if not dictionary["avatar"]: #can happen in case of e.g. empty photo elem
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146 del dictionary['avatar']
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147 else:
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148 self.update_cache(target, 'avatar', dictionary['avatar'], profile)
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149 else:
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150 info (_('FIXME: [%s] VCard tag is not managed yet') % elem.name)
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151
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152 returnValue(dictionary)
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153
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154 def vcard_ok(self, answer, profile):
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155 """Called after the first get IQ"""
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156 debug (_("VCard found"))
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157
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158 if answer.firstChildElement().name == "vCard":
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159 d = self.vCard2Dict(answer.firstChildElement(), jid.JID(answer["from"]), profile)
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160 d.addCallback(lambda data: self.host.bridge.actionResult("RESULT", answer['id'], data, profile))
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161 else:
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162 error (_("FIXME: vCard not found as first child element"))
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163 self.host.bridge.actionResult("SUPPRESS", answer['id'], {}, profile) #FIXME: maybe an error message would be better
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164
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165 def vcard_err(self, failure, profile):
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166 """Called when something is wrong with registration"""
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167 error (_("Can't find VCard of %s") % failure.value.stanza['from'])
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168 self.host.bridge.actionResult("SUPPRESS", failure.value.stanza['id'], {}, profile) #FIXME: maybe an error message would be better
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169
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170 def getCard(self, target, profile_key='@DEFAULT@'):
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171 """Ask server for VCard
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172 @param target: jid from which we want the VCard
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173 @result: id to retrieve the profile"""
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parents: 57
diff changeset
174 current_jid, xmlstream = self.host.getJidNStream(profile_key)
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175 if not xmlstream:
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176 error (_('Asking vcard for an non-existant or not connected profile'))
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177 return ""
372
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178 profile = self.host.memory.getProfileName(profile_key)
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179 to_jid = jid.JID(target)
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180 debug(_("Asking for %s's VCard") % to_jid.userhost())
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parents: 57
diff changeset
181 reg_request=IQ(xmlstream,'get')
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182 reg_request["from"]=current_jid.full()
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diff changeset
183 reg_request["to"] = to_jid.userhost()
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184 reg_request.addElement('vCard', NS_VCARD)
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185 reg_request.send(to_jid.userhost()).addCallbacks(self.vcard_ok, self.vcard_err, callbackArgs=[profile], errbackArgs=[profile])
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186 return reg_request["id"]
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187
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parents: 42
diff changeset
188 def getAvatarFile(self, hash):
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Goffi <goffi@goffi.org>
parents: 42
diff changeset
189 """Give the full path of avatar from hash
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parents: 42
diff changeset
190 @param hash: SHA1 hash
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191 @return full_path
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parents: 42
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192 """
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Goffi <goffi@goffi.org>
parents: 42
diff changeset
193 filename = self.avatar_path+'/'+hash
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Goffi <goffi@goffi.org>
parents: 42
diff changeset
194 if not os.path.exists(filename):
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diff changeset
195 error (_("Asking for an uncached avatar [%s]") % hash)
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diff changeset
196 return ""
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parents: 42
diff changeset
197 return filename
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parents: 42
diff changeset
198
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199
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diff changeset
200 class XEP_0054_handler(XMPPHandler):
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diff changeset
201 implements(iwokkel.IDisco)
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parents: 57
diff changeset
202
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diff changeset
203 def __init__(self, plugin_parent):
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204 self.plugin_parent = plugin_parent
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diff changeset
205 self.host = plugin_parent.host
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parents: 57
diff changeset
206
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Goffi <goffi@goffi.org>
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diff changeset
207 def connectionInitialized(self):
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Goffi <goffi@goffi.org>
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diff changeset
208 self.xmlstream.addObserver(VCARD_UPDATE, self.update)
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Goffi <goffi@goffi.org>
parents: 57
diff changeset
209
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Goffi <goffi@goffi.org>
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diff changeset
210 def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
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parents: 57
diff changeset
211 return [disco.DiscoFeature(NS_VCARD)]
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Goffi <goffi@goffi.org>
parents: 57
diff changeset
212
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diff changeset
213 def getDiscoItems(self, requestor, target, nodeIdentifier=''):
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diff changeset
214 return []
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parents: 57
diff changeset
215
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diff changeset
216 def update(self, presence):
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diff changeset
217 """Request for VCard's nickname
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diff changeset
218 return the cached nickname if exists, else get VCard
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parents: 44
diff changeset
219 """
281
Goffi <goffi@goffi.org>
parents: 228
diff changeset
220 from_jid = jid.JID(presence['from'])
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c243f4cb2ad9 plugin XEP-0054: cache now use storage
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parents: 372
diff changeset
221 #FIXME: wokkel's data_form should be used here
48
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parents: 44
diff changeset
222 x_elem = filter (lambda x:x.name == "x", presence.elements())[0] #We only want the "x" element
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parents: 44
diff changeset
223 for elem in x_elem.elements():
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parents: 44
diff changeset
224 if elem.name == 'photo':
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Goffi <goffi@goffi.org>
parents: 44
diff changeset
225 hash = str(elem)
435
c243f4cb2ad9 plugin XEP-0054: cache now use storage
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parents: 372
diff changeset
226 old_avatar = self.plugin_parent.get_cache(from_jid, 'avatar', self.parent.profile)
48
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diff changeset
227 if not old_avatar or old_avatar != hash:
69
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parents: 66
diff changeset
228 debug(_('New avatar found, requesting vcard'))
281
Goffi <goffi@goffi.org>
parents: 228
diff changeset
229 self.plugin_parent.getCard(from_jid.userhost(), self.parent.profile)