Mercurial > libervia-backend
annotate src/plugins/plugin_xep_0054.py @ 283:68cd30d982a5
core: added plugins for PubSub et PEP (first drafts)
- plugin for XEP 0060, 0163 and 0107, based on Wokkel's pubsub
- XEP 0115 plugin has been fixed, so generateHash can be called when features have changed (can be usefull to filter PEP)
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Thu, 03 Feb 2011 18:06:25 +0100 |
| parents | 1e3e169955b2 |
| children | 7c79d4a8c9e6 |
| 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", |
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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.expanduser(self.host.get_const('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) |
| 64 | 74 host.bridge.addMethod("getCard", ".communication", in_sign='ss', out_sign='s', method=self.getCard) |
| 43 | 75 host.bridge.addMethod("getAvatarFile", ".communication", in_sign='s', out_sign='s', method=self.getAvatarFile) |
| 64 | 76 host.bridge.addMethod("getCardCache", ".communication", in_sign='s', out_sign='a{ss}', method=self.getCardCache) |
| 77 | |
| 72 | 78 def getHandler(self, profile): |
| 64 | 79 return XEP_0054_handler(self) |
| 48 | 80 |
| 81 def update_cache(self, jid, name, value): | |
| 82 """update cache value | |
| 83 - save value in memory in case of change | |
| 84 - send updatedValue signal if the value is new or updated | |
| 85 """ | |
| 86 if not self.vcard_cache.has_key(jid.userhost()): | |
| 87 self.vcard_cache[jid.userhost()] = {} | |
| 88 | |
| 89 cache = self.vcard_cache[jid.userhost()] | |
| 90 old_value = cache[name] if cache.has_key(name) else None | |
| 91 if not old_value or value != old_value: | |
| 92 cache[name] = value | |
| 93 self.host.memory.setPrivate("vcard_cache", self.vcard_cache) | |
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94 self.host.bridge.updatedValue('card_'+name, {'jid':jid.userhost(), name:value}) |
| 48 | 95 |
| 96 def get_cache(self, jid, name): | |
| 97 """return cached value for jid | |
| 98 @param jid: target contact | |
| 99 @param name: name of the value ('nick' or 'avatar') | |
| 100 @return: wanted value or None""" | |
| 101 try: | |
| 102 return self.vcard_cache[jid.userhost()][name] | |
| 103 except KeyError: | |
| 104 return None | |
| 105 | |
| 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': |
| 69 | 111 info(_('Photo of type [%s] found') % str(elem)) |
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112 if elem.name == 'BINVAL': |
| 69 | 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) |
| 69 | 120 debug(_("file saved to %s") % hash) |
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121 else: |
| 69 | 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 @defer.deferredGenerator |
| 48 | 126 def vCard2Dict(self, vcard, target): |
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127 """Convert a VCard to a dict, and save binaries""" |
| 69 | 128 debug (_("parsing vcard")) |
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129 dictionary = {} |
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130 d = defer.Deferred() |
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131 |
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132 for elem in vcard.elements(): |
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133 if elem.name == 'FN': |
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134 dictionary['fullname'] = unicode(elem) |
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135 elif elem.name == 'NICKNAME': |
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136 dictionary['nick'] = unicode(elem) |
| 48 | 137 self.update_cache(target, 'nick', dictionary['nick']) |
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138 elif elem.name == 'URL': |
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139 dictionary['website'] = unicode(elem) |
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140 elif elem.name == 'EMAIL': |
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141 dictionary['email'] = unicode(elem) |
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142 elif elem.name == 'BDAY': |
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143 dictionary['birthday'] = unicode(elem) |
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144 elif elem.name == 'PHOTO': |
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145 d2 = defer.waitForDeferred( |
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146 threads.deferToThread(self.save_photo, elem)) |
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147 yield d2 |
| 43 | 148 dictionary["avatar"] = d2.getResult() |
| 48 | 149 if not dictionary["avatar"]: #can happen in case of e.g. empty photo elem |
| 150 del dictionary['avatar'] | |
| 151 else: | |
| 152 self.update_cache(target, 'avatar', dictionary['avatar']) | |
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153 else: |
| 69 | 154 info (_('FIXME: [%s] VCard tag is not managed yet') % elem.name) |
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155 |
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156 yield dictionary |
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157 |
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158 def vcard_ok(self, answer): |
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159 """Called after the first get IQ""" |
| 69 | 160 debug (_("VCard found")) |
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161 |
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162 if answer.firstChildElement().name == "vCard": |
| 48 | 163 d = self.vCard2Dict(answer.firstChildElement(), jid.JID(answer["from"])) |
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164 d.addCallback(lambda data: self.host.bridge.actionResult("RESULT", answer['id'], data)) |
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165 else: |
| 69 | 166 error (_("FIXME: vCard not found as first child element")) |
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167 self.host.bridge.actionResult("SUPPRESS", answer['id'], {}) #FIXME: maybe an error message would be best |
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168 |
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169 def vcard_err(self, failure): |
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170 """Called when something is wrong with registration""" |
| 69 | 171 error (_("Can't find VCard of %s") % failure.value.stanza['from']) |
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172 self.host.bridge.actionResult("SUPPRESS", failure.value.stanza['id'], {}) #FIXME: maybe an error message would be best |
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173 |
| 64 | 174 def getCard(self, target, profile_key='@DEFAULT@'): |
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175 """Ask server for VCard |
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176 @param target: jid from which we want the VCard |
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177 @result: id to retrieve the profile""" |
| 64 | 178 current_jid, xmlstream = self.host.getJidNStream(profile_key) |
| 179 if not xmlstream: | |
| 69 | 180 error (_('Asking vcard for an non-existant or not connected profile')) |
| 64 | 181 return "" |
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182 to_jid = jid.JID(target) |
| 69 | 183 debug(_("Asking for %s's VCard") % to_jid.userhost()) |
| 64 | 184 reg_request=IQ(xmlstream,'get') |
| 185 reg_request["from"]=current_jid.full() | |
| 48 | 186 reg_request["to"] = to_jid.userhost() |
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187 query=reg_request.addElement('vCard', NS_VCARD) |
| 48 | 188 reg_request.send(to_jid.userhost()).addCallbacks(self.vcard_ok, self.vcard_err) |
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189 return reg_request["id"] |
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190 |
| 43 | 191 def getAvatarFile(self, hash): |
| 192 """Give the full path of avatar from hash | |
| 193 @param hash: SHA1 hash | |
| 194 @return full_path | |
| 195 """ | |
| 196 filename = self.avatar_path+'/'+hash | |
| 197 if not os.path.exists(filename): | |
| 69 | 198 error (_("Asking for an uncached avatar [%s]") % hash) |
| 43 | 199 return "" |
| 200 return filename | |
| 201 | |
| 64 | 202 def getCardCache(self, target): |
| 48 | 203 """Request for cached values of profile |
| 204 return the cached nickname and avatar if exists, else get VCard | |
| 205 """ | |
| 206 to_jid = jid.JID(target) | |
| 207 result = {} | |
| 208 nick = self.get_cache(to_jid, 'nick') | |
| 209 if nick: | |
| 210 result['nick'] = nick | |
| 211 avatar = self.get_cache(to_jid, 'avatar') | |
| 212 if avatar: | |
| 213 result['avatar'] = avatar | |
| 214 return result | |
| 215 | |
| 64 | 216 |
| 217 | |
| 218 class XEP_0054_handler(XMPPHandler): | |
| 219 implements(iwokkel.IDisco) | |
| 220 | |
| 221 def __init__(self, plugin_parent): | |
| 222 self.plugin_parent = plugin_parent | |
| 223 self.host = plugin_parent.host | |
| 224 | |
| 225 def connectionInitialized(self): | |
| 226 self.xmlstream.addObserver(VCARD_UPDATE, self.update) | |
| 227 | |
| 228 def getDiscoInfo(self, requestor, target, nodeIdentifier=''): | |
| 229 return [disco.DiscoFeature(NS_VCARD)] | |
| 230 | |
| 231 def getDiscoItems(self, requestor, target, nodeIdentifier=''): | |
| 232 return [] | |
| 233 | |
| 48 | 234 def update(self, presence): |
| 235 """Request for VCard's nickname | |
| 236 return the cached nickname if exists, else get VCard | |
| 237 """ | |
| 281 | 238 from_jid = jid.JID(presence['from']) |
| 48 | 239 x_elem = filter (lambda x:x.name == "x", presence.elements())[0] #We only want the "x" element |
| 240 for elem in x_elem.elements(): | |
| 241 if elem.name == 'photo': | |
| 242 hash = str(elem) | |
| 281 | 243 old_avatar = self.plugin_parent.get_cache(from_jid, 'avatar') |
| 48 | 244 if not old_avatar or old_avatar != hash: |
| 69 | 245 debug(_('New avatar found, requesting vcard')) |
| 281 | 246 self.plugin_parent.getCard(from_jid.userhost(), self.parent.profile) |