annotate src/plugins/plugin_xep_0054.py @ 551:dcec4ba8e72c

plugin XEP-0054: naive approach to have a persistent cache of avatars
author Goffi <goffi@goffi.org>
date Thu, 22 Nov 2012 00:46:49 +0100
parents 2c4016921403
children 7ffae708b176
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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 from sat.memory.persistent import PersistentDict
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37
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38 try:
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39 from twisted.words.protocols.xmlstream import XMPPHandler
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40 except ImportError:
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41 from wokkel.subprotocols import XMPPHandler
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42
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43 AVATAR_PATH = "avatars"
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44
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45 IQ_GET = '/iq[@type="get"]'
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46 NS_VCARD = 'vcard-temp'
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47 VCARD_REQUEST = IQ_GET + '/vCard[@xmlns="' + NS_VCARD + '"]' #TODO: manage requests
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48
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49 PRESENCE = '/presence'
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50 NS_VCARD_UPDATE = 'vcard-temp:x:update'
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51 VCARD_UPDATE = PRESENCE + '/x[@xmlns="' + NS_VCARD_UPDATE + '"]'
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52
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53 PLUGIN_INFO = {
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54 "name": "XEP 0054 Plugin",
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55 "import_name": "XEP-0054",
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56 "type": "XEP",
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57 "protocols": ["XEP-0054", "XEP-0153"],
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58 "dependencies": [],
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59 "main": "XEP_0054",
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60 "handler": "yes",
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61 "description": _("""Implementation of vcard-temp""")
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62 }
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63
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64 class XEP_0054():
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65 #TODO: - check that nickname is ok
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66 # - refactor the code/better use of Wokkel
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67 # - get missing values
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68
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69 def __init__(self, host):
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70 info(_("Plugin XEP_0054 initialization"))
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71 self.host = host
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72 self.avatar_path = os.path.join(self.host.memory.getConfig('', 'local_dir'), AVATAR_PATH)
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73 if not os.path.exists(self.avatar_path):
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74 os.makedirs(self.avatar_path)
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75 self.avatars_cache = PersistentDict(NS_VCARD)
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76 self.avatars_cache.load() #FIXME: resulting deferred must be correctly managed
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77 host.bridge.addMethod("getCard", ".plugin", in_sign='ss', out_sign='s', method=self.getCard)
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78 host.bridge.addMethod("getAvatarFile", ".plugin", in_sign='s', out_sign='s', method=self.getAvatarFile)
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79
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80 def getHandler(self, profile):
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81 return XEP_0054_handler(self)
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82
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83 def _fillCachedValues(self, result, client):
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84 #FIXME: this is really suboptimal, need to be reworked
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85 # the current naive approach keeps a map between all jids of all profiles
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86 # in persistent cache, and check if cached jid are in roster, then put avatar
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87 # hashs in memory.
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88 for _jid in client.roster.getBareJids():
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89 if _jid in self.avatars_cache:
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90 self.host.memory.updateEntityData(jid.JID(_jid), "avatar", self.avatars_cache[_jid], client.profile)
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91
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92 def profileConnected(self, profile):
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93 client = self.host.getClient(profile)
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94 client.roster.got_roster.addCallback(self._fillCachedValues, client)
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95
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96 def update_cache(self, jid, name, value, profile):
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97 """update cache value
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98 - save value in memory in case of change
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99 @param jid: jid of the owner of the vcard
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100 @param name: name of the item which changed
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101 @param value: new value of the item
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102 @param profile: profile which received the update
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103 """
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104 try:
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105 cached = self.host.memory.getEntityData(jid, [name], profile)
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106 except exceptions.UnknownEntityError:
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107 cached = {}
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108 if not name in cached or cached[name] != value:
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109 self.host.memory.updateEntityData(jid, name, value, profile)
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110 if name == "avatar":
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111 self.avatars_cache[jid.userhost()] = value
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112
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113 def get_cache(self, jid, name, profile):
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114 """return cached value for jid
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115 @param jid: target contact
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116 @param name: name of the value ('nick' or 'avatar')
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117 @param profile: %(doc_profile)s
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118 @return: wanted value or None"""
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119 try:
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120 data = self.host.memory.getEntityData(jid, [name], profile)
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121 except exceptions.UnknownEntityError:
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122 return None
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123 return data.get(name)
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124
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125 def save_photo(self, photo_xml):
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126 """Parse a <PHOTO> elem and save the picture"""
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127 for elem in photo_xml.elements():
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128 if elem.name == 'TYPE':
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parents: 66
diff changeset
129 info(_('Photo of type [%s] found') % str(elem))
42
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parents:
diff changeset
130 if elem.name == 'BINVAL':
69
86f1f7f6d332 i18n first draft
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parents: 66
diff changeset
131 debug(_('Decoding binary'))
42
874de3020e1c Initial VCard (XEP-0054) support + misc fixes
Goffi <goffi@goffi.org>
parents:
diff changeset
132 decoded = b64decode(str(elem))
874de3020e1c Initial VCard (XEP-0054) support + misc fixes
Goffi <goffi@goffi.org>
parents:
diff changeset
133 hash = sha1(decoded).hexdigest()
874de3020e1c Initial VCard (XEP-0054) support + misc fixes
Goffi <goffi@goffi.org>
parents:
diff changeset
134 filename = self.avatar_path+'/'+hash
874de3020e1c Initial VCard (XEP-0054) support + misc fixes
Goffi <goffi@goffi.org>
parents:
diff changeset
135 if not os.path.exists(filename):
874de3020e1c Initial VCard (XEP-0054) support + misc fixes
Goffi <goffi@goffi.org>
parents:
diff changeset
136 with open(filename,'wb') as file:
874de3020e1c Initial VCard (XEP-0054) support + misc fixes
Goffi <goffi@goffi.org>
parents:
diff changeset
137 file.write(decoded)
69
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Goffi <goffi@goffi.org>
parents: 66
diff changeset
138 debug(_("file saved to %s") % hash)
42
874de3020e1c Initial VCard (XEP-0054) support + misc fixes
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parents:
diff changeset
139 else:
69
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parents: 66
diff changeset
140 debug(_("file [%s] already in cache") % hash)
42
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Goffi <goffi@goffi.org>
parents:
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141 return hash
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142
485
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parents: 480
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143 @inlineCallbacks
372
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Goffi <goffi@goffi.org>
parents: 365
diff changeset
144 def vCard2Dict(self, vcard, target, profile):
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parents:
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145 """Convert a VCard to a dict, and save binaries"""
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Goffi <goffi@goffi.org>
parents: 66
diff changeset
146 debug (_("parsing vcard"))
42
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Goffi <goffi@goffi.org>
parents:
diff changeset
147 dictionary = {}
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Goffi <goffi@goffi.org>
parents:
diff changeset
148
874de3020e1c Initial VCard (XEP-0054) support + misc fixes
Goffi <goffi@goffi.org>
parents:
diff changeset
149 for elem in vcard.elements():
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Goffi <goffi@goffi.org>
parents:
diff changeset
150 if elem.name == 'FN':
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Goffi <goffi@goffi.org>
parents:
diff changeset
151 dictionary['fullname'] = unicode(elem)
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Goffi <goffi@goffi.org>
parents:
diff changeset
152 elif elem.name == 'NICKNAME':
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Goffi <goffi@goffi.org>
parents:
diff changeset
153 dictionary['nick'] = unicode(elem)
372
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parents: 365
diff changeset
154 self.update_cache(target, 'nick', dictionary['nick'], profile)
42
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Goffi <goffi@goffi.org>
parents:
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155 elif elem.name == 'URL':
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Goffi <goffi@goffi.org>
parents:
diff changeset
156 dictionary['website'] = unicode(elem)
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Goffi <goffi@goffi.org>
parents:
diff changeset
157 elif elem.name == 'EMAIL':
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Goffi <goffi@goffi.org>
parents:
diff changeset
158 dictionary['email'] = unicode(elem)
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Goffi <goffi@goffi.org>
parents:
diff changeset
159 elif elem.name == 'BDAY':
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Goffi <goffi@goffi.org>
parents:
diff changeset
160 dictionary['birthday'] = unicode(elem)
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Goffi <goffi@goffi.org>
parents:
diff changeset
161 elif elem.name == 'PHOTO':
485
ee95ff721b68 plugin xep-0054: changed deprecated deferredGenerator for inlineCallbacks
Goffi <goffi@goffi.org>
parents: 480
diff changeset
162 dictionary["avatar"] = yield threads.deferToThread(self.save_photo, elem)
48
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Goffi <goffi@goffi.org>
parents: 44
diff changeset
163 if not dictionary["avatar"]: #can happen in case of e.g. empty photo elem
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Goffi <goffi@goffi.org>
parents: 44
diff changeset
164 del dictionary['avatar']
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parents: 44
diff changeset
165 else:
372
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parents: 365
diff changeset
166 self.update_cache(target, 'avatar', dictionary['avatar'], profile)
42
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parents:
diff changeset
167 else:
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parents: 66
diff changeset
168 info (_('FIXME: [%s] VCard tag is not managed yet') % elem.name)
42
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parents:
diff changeset
169
485
ee95ff721b68 plugin xep-0054: changed deprecated deferredGenerator for inlineCallbacks
Goffi <goffi@goffi.org>
parents: 480
diff changeset
170 returnValue(dictionary)
42
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parents:
diff changeset
171
372
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parents: 365
diff changeset
172 def vcard_ok(self, answer, profile):
42
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Goffi <goffi@goffi.org>
parents:
diff changeset
173 """Called after the first get IQ"""
69
86f1f7f6d332 i18n first draft
Goffi <goffi@goffi.org>
parents: 66
diff changeset
174 debug (_("VCard found"))
42
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Goffi <goffi@goffi.org>
parents:
diff changeset
175
874de3020e1c Initial VCard (XEP-0054) support + misc fixes
Goffi <goffi@goffi.org>
parents:
diff changeset
176 if answer.firstChildElement().name == "vCard":
372
f964dcec1611 core: plugins refactored according to bridge + updatedValue now use profile
Goffi <goffi@goffi.org>
parents: 365
diff changeset
177 d = self.vCard2Dict(answer.firstChildElement(), jid.JID(answer["from"]), profile)
538
2c4016921403 core, frontends, bridgen plugins: fixed methods which were unproperly managing multi-profiles
Goffi <goffi@goffi.org>
parents: 504
diff changeset
178 d.addCallback(lambda data: self.host.bridge.actionResult("RESULT", answer['id'], data, profile))
42
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Goffi <goffi@goffi.org>
parents:
diff changeset
179 else:
69
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parents: 66
diff changeset
180 error (_("FIXME: vCard not found as first child element"))
538
2c4016921403 core, frontends, bridgen plugins: fixed methods which were unproperly managing multi-profiles
Goffi <goffi@goffi.org>
parents: 504
diff changeset
181 self.host.bridge.actionResult("SUPPRESS", answer['id'], {}, profile) #FIXME: maybe an error message would be better
42
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parents:
diff changeset
182
538
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Goffi <goffi@goffi.org>
parents: 504
diff changeset
183 def vcard_err(self, failure, profile):
42
874de3020e1c Initial VCard (XEP-0054) support + misc fixes
Goffi <goffi@goffi.org>
parents:
diff changeset
184 """Called when something is wrong with registration"""
69
86f1f7f6d332 i18n first draft
Goffi <goffi@goffi.org>
parents: 66
diff changeset
185 error (_("Can't find VCard of %s") % failure.value.stanza['from'])
538
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Goffi <goffi@goffi.org>
parents: 504
diff changeset
186 self.host.bridge.actionResult("SUPPRESS", failure.value.stanza['id'], {}, profile) #FIXME: maybe an error message would be better
42
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Goffi <goffi@goffi.org>
parents:
diff changeset
187
64
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Goffi <goffi@goffi.org>
parents: 57
diff changeset
188 def getCard(self, target, profile_key='@DEFAULT@'):
42
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Goffi <goffi@goffi.org>
parents:
diff changeset
189 """Ask server for VCard
874de3020e1c Initial VCard (XEP-0054) support + misc fixes
Goffi <goffi@goffi.org>
parents:
diff changeset
190 @param target: jid from which we want the VCard
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Goffi <goffi@goffi.org>
parents:
diff changeset
191 @result: id to retrieve the profile"""
64
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Goffi <goffi@goffi.org>
parents: 57
diff changeset
192 current_jid, xmlstream = self.host.getJidNStream(profile_key)
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Goffi <goffi@goffi.org>
parents: 57
diff changeset
193 if not xmlstream:
69
86f1f7f6d332 i18n first draft
Goffi <goffi@goffi.org>
parents: 66
diff changeset
194 error (_('Asking vcard for an non-existant or not connected profile'))
64
d46f849664aa SàT: multi-profile, plugins updated
Goffi <goffi@goffi.org>
parents: 57
diff changeset
195 return ""
372
f964dcec1611 core: plugins refactored according to bridge + updatedValue now use profile
Goffi <goffi@goffi.org>
parents: 365
diff changeset
196 profile = self.host.memory.getProfileName(profile_key)
42
874de3020e1c Initial VCard (XEP-0054) support + misc fixes
Goffi <goffi@goffi.org>
parents:
diff changeset
197 to_jid = jid.JID(target)
69
86f1f7f6d332 i18n first draft
Goffi <goffi@goffi.org>
parents: 66
diff changeset
198 debug(_("Asking for %s's VCard") % to_jid.userhost())
64
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Goffi <goffi@goffi.org>
parents: 57
diff changeset
199 reg_request=IQ(xmlstream,'get')
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Goffi <goffi@goffi.org>
parents: 57
diff changeset
200 reg_request["from"]=current_jid.full()
48
4392f1fdb064 plugins improvement
Goffi <goffi@goffi.org>
parents: 44
diff changeset
201 reg_request["to"] = to_jid.userhost()
504
65ecbb473cbb core, quick frontend, plugin xep-0054, bridge: use of memory's entities data for vcard:
Goffi <goffi@goffi.org>
parents: 485
diff changeset
202 reg_request.addElement('vCard', NS_VCARD)
538
2c4016921403 core, frontends, bridgen plugins: fixed methods which were unproperly managing multi-profiles
Goffi <goffi@goffi.org>
parents: 504
diff changeset
203 reg_request.send(to_jid.userhost()).addCallbacks(self.vcard_ok, self.vcard_err, callbackArgs=[profile], errbackArgs=[profile])
42
874de3020e1c Initial VCard (XEP-0054) support + misc fixes
Goffi <goffi@goffi.org>
parents:
diff changeset
204 return reg_request["id"]
874de3020e1c Initial VCard (XEP-0054) support + misc fixes
Goffi <goffi@goffi.org>
parents:
diff changeset
205
43
8a438a6ff587 Wix: added avatar in profile
Goffi <goffi@goffi.org>
parents: 42
diff changeset
206 def getAvatarFile(self, hash):
8a438a6ff587 Wix: added avatar in profile
Goffi <goffi@goffi.org>
parents: 42
diff changeset
207 """Give the full path of avatar from hash
8a438a6ff587 Wix: added avatar in profile
Goffi <goffi@goffi.org>
parents: 42
diff changeset
208 @param hash: SHA1 hash
8a438a6ff587 Wix: added avatar in profile
Goffi <goffi@goffi.org>
parents: 42
diff changeset
209 @return full_path
8a438a6ff587 Wix: added avatar in profile
Goffi <goffi@goffi.org>
parents: 42
diff changeset
210 """
8a438a6ff587 Wix: added avatar in profile
Goffi <goffi@goffi.org>
parents: 42
diff changeset
211 filename = self.avatar_path+'/'+hash
8a438a6ff587 Wix: added avatar in profile
Goffi <goffi@goffi.org>
parents: 42
diff changeset
212 if not os.path.exists(filename):
69
86f1f7f6d332 i18n first draft
Goffi <goffi@goffi.org>
parents: 66
diff changeset
213 error (_("Asking for an uncached avatar [%s]") % hash)
43
8a438a6ff587 Wix: added avatar in profile
Goffi <goffi@goffi.org>
parents: 42
diff changeset
214 return ""
8a438a6ff587 Wix: added avatar in profile
Goffi <goffi@goffi.org>
parents: 42
diff changeset
215 return filename
8a438a6ff587 Wix: added avatar in profile
Goffi <goffi@goffi.org>
parents: 42
diff changeset
216
64
d46f849664aa SàT: multi-profile, plugins updated
Goffi <goffi@goffi.org>
parents: 57
diff changeset
217
d46f849664aa SàT: multi-profile, plugins updated
Goffi <goffi@goffi.org>
parents: 57
diff changeset
218 class XEP_0054_handler(XMPPHandler):
d46f849664aa SàT: multi-profile, plugins updated
Goffi <goffi@goffi.org>
parents: 57
diff changeset
219 implements(iwokkel.IDisco)
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Goffi <goffi@goffi.org>
parents: 57
diff changeset
220
d46f849664aa SàT: multi-profile, plugins updated
Goffi <goffi@goffi.org>
parents: 57
diff changeset
221 def __init__(self, plugin_parent):
d46f849664aa SàT: multi-profile, plugins updated
Goffi <goffi@goffi.org>
parents: 57
diff changeset
222 self.plugin_parent = plugin_parent
d46f849664aa SàT: multi-profile, plugins updated
Goffi <goffi@goffi.org>
parents: 57
diff changeset
223 self.host = plugin_parent.host
d46f849664aa SàT: multi-profile, plugins updated
Goffi <goffi@goffi.org>
parents: 57
diff changeset
224
d46f849664aa SàT: multi-profile, plugins updated
Goffi <goffi@goffi.org>
parents: 57
diff changeset
225 def connectionInitialized(self):
d46f849664aa SàT: multi-profile, plugins updated
Goffi <goffi@goffi.org>
parents: 57
diff changeset
226 self.xmlstream.addObserver(VCARD_UPDATE, self.update)
d46f849664aa SàT: multi-profile, plugins updated
Goffi <goffi@goffi.org>
parents: 57
diff changeset
227
d46f849664aa SàT: multi-profile, plugins updated
Goffi <goffi@goffi.org>
parents: 57
diff changeset
228 def getDiscoInfo(self, requestor, target, nodeIdentifier=''):
d46f849664aa SàT: multi-profile, plugins updated
Goffi <goffi@goffi.org>
parents: 57
diff changeset
229 return [disco.DiscoFeature(NS_VCARD)]
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Goffi <goffi@goffi.org>
parents: 57
diff changeset
230
d46f849664aa SàT: multi-profile, plugins updated
Goffi <goffi@goffi.org>
parents: 57
diff changeset
231 def getDiscoItems(self, requestor, target, nodeIdentifier=''):
d46f849664aa SàT: multi-profile, plugins updated
Goffi <goffi@goffi.org>
parents: 57
diff changeset
232 return []
d46f849664aa SàT: multi-profile, plugins updated
Goffi <goffi@goffi.org>
parents: 57
diff changeset
233
48
4392f1fdb064 plugins improvement
Goffi <goffi@goffi.org>
parents: 44
diff changeset
234 def update(self, presence):
4392f1fdb064 plugins improvement
Goffi <goffi@goffi.org>
parents: 44
diff changeset
235 """Request for VCard's nickname
4392f1fdb064 plugins improvement
Goffi <goffi@goffi.org>
parents: 44
diff changeset
236 return the cached nickname if exists, else get VCard
4392f1fdb064 plugins improvement
Goffi <goffi@goffi.org>
parents: 44
diff changeset
237 """
281
Goffi <goffi@goffi.org>
parents: 228
diff changeset
238 from_jid = jid.JID(presence['from'])
435
c243f4cb2ad9 plugin XEP-0054: cache now use storage
Goffi <goffi@goffi.org>
parents: 372
diff changeset
239 #FIXME: wokkel's data_form should be used here
48
4392f1fdb064 plugins improvement
Goffi <goffi@goffi.org>
parents: 44
diff changeset
240 x_elem = filter (lambda x:x.name == "x", presence.elements())[0] #We only want the "x" element
4392f1fdb064 plugins improvement
Goffi <goffi@goffi.org>
parents: 44
diff changeset
241 for elem in x_elem.elements():
4392f1fdb064 plugins improvement
Goffi <goffi@goffi.org>
parents: 44
diff changeset
242 if elem.name == 'photo':
551
dcec4ba8e72c plugin XEP-0054: naive approach to have a persistent cache of avatars
Goffi <goffi@goffi.org>
parents: 538
diff changeset
243 _hash = str(elem)
435
c243f4cb2ad9 plugin XEP-0054: cache now use storage
Goffi <goffi@goffi.org>
parents: 372
diff changeset
244 old_avatar = self.plugin_parent.get_cache(from_jid, 'avatar', self.parent.profile)
551
dcec4ba8e72c plugin XEP-0054: naive approach to have a persistent cache of avatars
Goffi <goffi@goffi.org>
parents: 538
diff changeset
245 if not old_avatar or old_avatar != _hash:
69
86f1f7f6d332 i18n first draft
Goffi <goffi@goffi.org>
parents: 66
diff changeset
246 debug(_('New avatar found, requesting vcard'))
281
Goffi <goffi@goffi.org>
parents: 228
diff changeset
247 self.plugin_parent.getCard(from_jid.userhost(), self.parent.profile)