Mercurial > libervia-backend
annotate src/plugins/plugin_xep_0054.py @ 424:72c13313b6d6
bridge: added check that synchronous method does not return a deferred
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Mon, 07 Nov 2011 22:27:07 +0100 |
| parents | f964dcec1611 |
| children | c243f4cb2ad9 |
| 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 |
| 228 | 6 Copyright (C) 2009, 2010, 2011 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 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 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 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.words.xish import domish |
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24 from twisted.internet import protocol, defer, threads, reactor |
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25 from twisted.words.protocols.jabber import client, jid, xmlstream |
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26 from twisted.words.protocols.jabber import error as jab_error |
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27 from twisted.words.protocols.jabber.xmlstream import IQ |
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28 import os.path |
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29 import pdb |
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30 |
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31 from zope.interface import implements |
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32 |
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33 from wokkel import disco, iwokkel |
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34 |
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35 from base64 import b64decode |
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36 from hashlib import sha1 |
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37 from time import sleep |
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38 |
| 48 | 39 try: |
| 40 from twisted.words.protocols.xmlstream import XMPPHandler | |
| 41 except ImportError: | |
| 42 from wokkel.subprotocols import XMPPHandler | |
| 43 | |
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44 AVATAR_PATH = "avatars" |
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45 |
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46 IQ_GET = '/iq[@type="get"]' |
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47 NS_VCARD = 'vcard-temp' |
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48 VCARD_REQUEST = IQ_GET + '/vCard[@xmlns="' + NS_VCARD + '"]' #TODO: manage requests |
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49 |
| 48 | 50 PRESENCE = '/presence' |
| 51 NS_VCARD_UPDATE = 'vcard-temp:x:update' | |
| 52 VCARD_UPDATE = PRESENCE + '/x[@xmlns="' + NS_VCARD_UPDATE + '"]' | |
| 53 | |
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54 PLUGIN_INFO = { |
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55 "name": "XEP 0054 Plugin", |
| 291 | 56 "import_name": "XEP-0054", |
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57 "type": "XEP", |
| 48 | 58 "protocols": ["XEP-0054", "XEP-0153"], |
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59 "dependencies": [], |
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60 "main": "XEP_0054", |
| 64 | 61 "handler": "yes", |
| 69 | 62 "description": _("""Implementation of vcard-temp""") |
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63 } |
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64 |
| 64 | 65 class XEP_0054(): |
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66 |
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67 def __init__(self, host): |
| 69 | 68 info(_("Plugin XEP_0054 initialization")) |
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69 self.host = host |
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70 self.avatar_path = os.path.join(self.host.memory.getConfig('', 'local_dir'), AVATAR_PATH) |
| 48 | 71 self.vcard_cache = host.memory.getPrivate("vcard_cache") or {} #used to store nicknames and avatar, key = jid |
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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 host.bridge.addMethod("getCardCache", ".plugin", in_sign='s', out_sign='a{ss}', method=self.getCardCache) |
| 64 | 77 |
| 72 | 78 def getHandler(self, profile): |
| 64 | 79 return XEP_0054_handler(self) |
| 48 | 80 |
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81 def update_cache(self, jid, name, value, profile): |
| 48 | 82 """update cache value |
| 83 - save value in memory in case of change | |
| 84 - send updatedValue signal if the value is new or updated | |
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85 @param jid: jid of the owner of the vcard |
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86 @param name: name of the item which changed |
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87 @param value: new value of the item |
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88 @param profile: profile which received the update |
| 48 | 89 """ |
| 90 if not self.vcard_cache.has_key(jid.userhost()): | |
| 91 self.vcard_cache[jid.userhost()] = {} | |
| 92 | |
| 93 cache = self.vcard_cache[jid.userhost()] | |
| 94 old_value = cache[name] if cache.has_key(name) else None | |
| 95 if not old_value or value != old_value: | |
| 96 cache[name] = value | |
| 97 self.host.memory.setPrivate("vcard_cache", self.vcard_cache) | |
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98 self.host.bridge.updatedValue('card_'+name, {'jid':jid.userhost(), name:value}, profile) |
| 48 | 99 |
| 100 def get_cache(self, jid, name): | |
| 101 """return cached value for jid | |
| 102 @param jid: target contact | |
| 103 @param name: name of the value ('nick' or 'avatar') | |
| 104 @return: wanted value or None""" | |
| 105 try: | |
| 106 return self.vcard_cache[jid.userhost()][name] | |
| 107 except KeyError: | |
| 108 return None | |
| 109 | |
| 110 | |
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111 def save_photo(self, photo_xml): |
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112 """Parse a <PHOTO> elem and save the picture""" |
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113 for elem in photo_xml.elements(): |
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114 if elem.name == 'TYPE': |
| 69 | 115 info(_('Photo of type [%s] found') % str(elem)) |
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116 if elem.name == 'BINVAL': |
| 69 | 117 debug(_('Decoding binary')) |
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118 decoded = b64decode(str(elem)) |
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119 hash = sha1(decoded).hexdigest() |
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120 filename = self.avatar_path+'/'+hash |
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121 if not os.path.exists(filename): |
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122 with open(filename,'wb') as file: |
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123 file.write(decoded) |
| 69 | 124 debug(_("file saved to %s") % hash) |
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125 else: |
| 69 | 126 debug(_("file [%s] already in cache") % hash) |
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127 return hash |
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128 |
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129 @defer.deferredGenerator |
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130 def vCard2Dict(self, vcard, target, profile): |
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131 """Convert a VCard to a dict, and save binaries""" |
| 69 | 132 debug (_("parsing vcard")) |
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133 dictionary = {} |
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134 d = defer.Deferred() |
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135 |
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136 for elem in vcard.elements(): |
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137 if elem.name == 'FN': |
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138 dictionary['fullname'] = unicode(elem) |
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139 elif elem.name == 'NICKNAME': |
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140 dictionary['nick'] = unicode(elem) |
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141 self.update_cache(target, 'nick', dictionary['nick'], profile) |
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142 elif elem.name == 'URL': |
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143 dictionary['website'] = unicode(elem) |
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144 elif elem.name == 'EMAIL': |
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145 dictionary['email'] = unicode(elem) |
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146 elif elem.name == 'BDAY': |
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147 dictionary['birthday'] = unicode(elem) |
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148 elif elem.name == 'PHOTO': |
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149 d2 = defer.waitForDeferred( |
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150 threads.deferToThread(self.save_photo, elem)) |
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151 yield d2 |
| 43 | 152 dictionary["avatar"] = d2.getResult() |
| 48 | 153 if not dictionary["avatar"]: #can happen in case of e.g. empty photo elem |
| 154 del dictionary['avatar'] | |
| 155 else: | |
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156 self.update_cache(target, 'avatar', dictionary['avatar'], profile) |
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157 else: |
| 69 | 158 info (_('FIXME: [%s] VCard tag is not managed yet') % elem.name) |
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159 |
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160 yield dictionary |
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161 |
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162 def vcard_ok(self, answer, profile): |
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163 """Called after the first get IQ""" |
| 69 | 164 debug (_("VCard found")) |
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165 |
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166 if answer.firstChildElement().name == "vCard": |
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167 d = self.vCard2Dict(answer.firstChildElement(), jid.JID(answer["from"]), profile) |
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168 d.addCallback(lambda data: self.host.bridge.actionResult("RESULT", answer['id'], data)) |
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169 else: |
| 69 | 170 error (_("FIXME: vCard not found as first child element")) |
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171 self.host.bridge.actionResult("SUPPRESS", answer['id'], {}) #FIXME: maybe an error message would be best |
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172 |
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173 def vcard_err(self, failure): |
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174 """Called when something is wrong with registration""" |
| 69 | 175 error (_("Can't find VCard of %s") % failure.value.stanza['from']) |
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176 self.host.bridge.actionResult("SUPPRESS", failure.value.stanza['id'], {}) #FIXME: maybe an error message would be best |
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177 |
| 64 | 178 def getCard(self, target, profile_key='@DEFAULT@'): |
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179 """Ask server for VCard |
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180 @param target: jid from which we want the VCard |
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181 @result: id to retrieve the profile""" |
| 64 | 182 current_jid, xmlstream = self.host.getJidNStream(profile_key) |
| 183 if not xmlstream: | |
| 69 | 184 error (_('Asking vcard for an non-existant or not connected profile')) |
| 64 | 185 return "" |
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186 profile = self.host.memory.getProfileName(profile_key) |
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187 to_jid = jid.JID(target) |
| 69 | 188 debug(_("Asking for %s's VCard") % to_jid.userhost()) |
| 64 | 189 reg_request=IQ(xmlstream,'get') |
| 190 reg_request["from"]=current_jid.full() | |
| 48 | 191 reg_request["to"] = to_jid.userhost() |
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192 query=reg_request.addElement('vCard', NS_VCARD) |
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193 reg_request.send(to_jid.userhost()).addCallbacks(self.vcard_ok, self.vcard_err, [profile]) |
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194 return reg_request["id"] |
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195 |
| 43 | 196 def getAvatarFile(self, hash): |
| 197 """Give the full path of avatar from hash | |
| 198 @param hash: SHA1 hash | |
| 199 @return full_path | |
| 200 """ | |
| 201 filename = self.avatar_path+'/'+hash | |
| 202 if not os.path.exists(filename): | |
| 69 | 203 error (_("Asking for an uncached avatar [%s]") % hash) |
| 43 | 204 return "" |
| 205 return filename | |
| 206 | |
| 64 | 207 def getCardCache(self, target): |
| 48 | 208 """Request for cached values of profile |
| 209 return the cached nickname and avatar if exists, else get VCard | |
| 210 """ | |
| 211 to_jid = jid.JID(target) | |
| 212 result = {} | |
| 213 nick = self.get_cache(to_jid, 'nick') | |
| 214 if nick: | |
| 215 result['nick'] = nick | |
| 216 avatar = self.get_cache(to_jid, 'avatar') | |
| 217 if avatar: | |
| 218 result['avatar'] = avatar | |
| 219 return result | |
| 220 | |
| 64 | 221 |
| 222 | |
| 223 class XEP_0054_handler(XMPPHandler): | |
| 224 implements(iwokkel.IDisco) | |
| 225 | |
| 226 def __init__(self, plugin_parent): | |
| 227 self.plugin_parent = plugin_parent | |
| 228 self.host = plugin_parent.host | |
| 229 | |
| 230 def connectionInitialized(self): | |
| 231 self.xmlstream.addObserver(VCARD_UPDATE, self.update) | |
| 232 | |
| 233 def getDiscoInfo(self, requestor, target, nodeIdentifier=''): | |
| 234 return [disco.DiscoFeature(NS_VCARD)] | |
| 235 | |
| 236 def getDiscoItems(self, requestor, target, nodeIdentifier=''): | |
| 237 return [] | |
| 238 | |
| 48 | 239 def update(self, presence): |
| 240 """Request for VCard's nickname | |
| 241 return the cached nickname if exists, else get VCard | |
| 242 """ | |
| 281 | 243 from_jid = jid.JID(presence['from']) |
| 48 | 244 x_elem = filter (lambda x:x.name == "x", presence.elements())[0] #We only want the "x" element |
| 245 for elem in x_elem.elements(): | |
| 246 if elem.name == 'photo': | |
| 247 hash = str(elem) | |
| 281 | 248 old_avatar = self.plugin_parent.get_cache(from_jid, 'avatar') |
| 48 | 249 if not old_avatar or old_avatar != hash: |
| 69 | 250 debug(_('New avatar found, requesting vcard')) |
| 281 | 251 self.plugin_parent.getCard(from_jid.userhost(), self.parent.profile) |