Mercurial > libervia-backend
annotate sat/plugins/plugin_xep_0384.py @ 3036:3338c6a634f5
install (setup.py): updated classifiers
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Sun, 25 Aug 2019 12:16:18 +0200 |
| parents | ab2696e34d29 |
| children | ffcdd93b61fa |
| rev | line source |
|---|---|
| 3028 | 1 #!/usr/bin/env python3 |
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2 # -*- coding: utf-8 -*- |
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3 |
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4 # SAT plugin for OMEMO encryption |
| 2771 | 5 # Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org) |
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6 |
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7 # This program is free software: you can redistribute it and/or modify |
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8 # it under the terms of the GNU Affero General Public License as published by |
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9 # the Free Software Foundation, either version 3 of the License, or |
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10 # (at your option) any later version. |
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11 |
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12 # This program is distributed in the hope that it will be useful, |
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 # GNU Affero General Public License for more details. |
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16 |
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17 # You should have received a copy of the GNU Affero General Public License |
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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19 |
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20 from sat.core.i18n import _, D_ |
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21 from sat.core.constants import Const as C |
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22 from sat.core.log import getLogger |
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23 from sat.core import exceptions |
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24 from omemo import exceptions as omemo_excpt |
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25 from twisted.internet import defer |
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26 from twisted.words.xish import domish |
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27 from twisted.words.protocols.jabber import jid |
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28 from twisted.words.protocols.jabber import error |
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29 from sat.memory import persistent |
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30 from functools import partial |
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31 from sat.tools import xml_tools |
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32 import logging |
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33 import random |
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34 import base64 |
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35 try: |
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36 import omemo |
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37 from omemo.extendedpublicbundle import ExtendedPublicBundle |
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38 from omemo_backend_signal import BACKEND as omemo_backend |
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39 # from omemo import wireformat |
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40 except ImportError as e: |
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41 raise exceptions.MissingModule( |
| 3028 | 42 'Missing module omemo, please download/install it. You can use ' |
| 43 '"pip install omemo"' | |
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44 ) |
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45 |
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46 log = getLogger(__name__) |
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47 |
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48 PLUGIN_INFO = { |
| 3028 | 49 C.PI_NAME: "OMEMO", |
| 50 C.PI_IMPORT_NAME: "XEP-0384", | |
| 51 C.PI_TYPE: "SEC", | |
| 52 C.PI_PROTOCOLS: ["XEP-0384"], | |
| 53 C.PI_DEPENDENCIES: ["XEP-0163", "XEP-0280", "XEP-0334", "XEP-0060"], | |
| 54 C.PI_MAIN: "OMEMO", | |
| 55 C.PI_HANDLER: "no", | |
| 56 C.PI_DESCRIPTION: _("""Implementation of OMEMO"""), | |
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57 } |
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58 |
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59 OMEMO_MIN_VER = (0, 10, 4) |
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60 NS_OMEMO = "eu.siacs.conversations.axolotl" |
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61 NS_OMEMO_DEVICES = NS_OMEMO + ".devicelist" |
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62 NS_OMEMO_BUNDLE = NS_OMEMO + ".bundles:{device_id}" |
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63 KEY_STATE = "STATE" |
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64 KEY_DEVICE_ID = "DEVICE_ID" |
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65 KEY_SESSION = "SESSION" |
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66 KEY_TRUST = "TRUST" |
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67 KEY_ACTIVE_DEVICES = "DEVICES" |
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68 KEY_INACTIVE_DEVICES = "INACTIVE_DEVICES" |
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69 KEY_ALL_JIDS = "ALL_JIDS" |
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70 |
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71 |
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72 # we want to manage log emitted by omemo module ourselves |
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73 |
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74 class SatHandler(logging.Handler): |
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75 |
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76 def emit(self, record): |
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77 log.log(record.levelname, record.getMessage()) |
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78 |
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79 @staticmethod |
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80 def install(): |
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81 omemo_sm_logger = logging.getLogger("omemo.SessionManager") |
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82 omemo_sm_logger.propagate = False |
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83 omemo_sm_logger.addHandler(SatHandler()) |
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84 |
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85 |
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86 SatHandler.install() |
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87 |
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88 |
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89 def b64enc(data): |
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90 return base64.b64encode(bytes(bytearray(data))).decode("US-ASCII") |
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91 |
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92 |
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93 def promise2Deferred(promise_): |
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94 """Create a Deferred and fire it when promise is resolved |
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95 |
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96 @param promise_(promise.Promise): promise to convert |
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97 @return (defer.Deferred): deferred instance linked to the promise |
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98 """ |
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99 d = defer.Deferred() |
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100 promise_.then(d.callback, d.errback) |
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101 return d |
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102 |
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103 |
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104 class OmemoStorage(omemo.Storage): |
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105 |
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106 def __init__(self, client, device_id, all_jids, persistent_dict): |
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107 """ |
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108 @param persistent_dict(persistent.LazyPersistentBinaryDict): object which will |
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109 store data in SàT database |
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110 """ |
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111 self.own_bare_jid_s = client.jid.userhost() |
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112 self.device_id = device_id |
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113 self.all_jids = all_jids |
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114 self.data = persistent_dict |
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115 |
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116 @property |
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117 def is_async(self): |
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118 return True |
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119 |
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120 def setCb(self, deferred, callback): |
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121 """Associate Deferred and callback |
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122 |
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123 callback of omemo.Storage expect a boolean with success state then result |
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124 Deferred on the other hand use 2 methods for callback and errback |
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125 This method use partial to call callback with boolean then result when |
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126 Deferred is called |
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127 """ |
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128 deferred.addCallback(partial(callback, True)) |
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129 deferred.addErrback(partial(callback, False)) |
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130 |
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131 def _checkJid(self, bare_jid): |
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132 """Check if jid is know, and store it if not |
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133 |
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134 @param bare_jid(unicode): bare jid to check |
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135 @return (D): Deferred fired when jid is stored |
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136 """ |
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137 if bare_jid in self.all_jids: |
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138 return defer.succeed(None) |
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139 else: |
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140 self.all_jids.add(bare_jid) |
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141 d = self.data.force(KEY_ALL_JIDS, self.all_jids) |
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142 return d |
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143 |
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144 def loadOwnData(self, callback): |
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145 callback(True, {'own_bare_jid': self.own_bare_jid_s, |
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146 'own_device_id': self.device_id}) |
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147 |
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148 def storeOwnData(self, callback, own_bare_jid, own_device_id): |
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149 if own_bare_jid != self.own_bare_jid_s or own_device_id != self.device_id: |
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150 raise exceptions.InternalError('bare jid or device id inconsistency!') |
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151 callback(True, None) |
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152 |
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153 def loadState(self, callback): |
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154 d = self.data.get(KEY_STATE) |
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155 self.setCb(d, callback) |
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156 |
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157 def storeState(self, callback, state): |
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158 d = self.data.force(KEY_STATE, state) |
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159 self.setCb(d, callback) |
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160 |
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161 def loadSession(self, callback, bare_jid, device_id): |
| 3028 | 162 key = '\n'.join([KEY_SESSION, bare_jid, str(device_id)]) |
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163 d = self.data.get(key) |
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164 self.setCb(d, callback) |
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165 |
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166 def storeSession(self, callback, bare_jid, device_id, session): |
| 3028 | 167 key = '\n'.join([KEY_SESSION, bare_jid, str(device_id)]) |
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168 d = self.data.force(key, session) |
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169 self.setCb(d, callback) |
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170 |
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171 def deleteSession(self, callback, bare_jid, device_id): |
| 3028 | 172 key = '\n'.join([KEY_SESSION, bare_jid, str(device_id)]) |
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173 d = self.data.remove(key) |
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174 self.setCb(d, callback) |
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175 |
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176 def loadActiveDevices(self, callback, bare_jid): |
| 3028 | 177 key = '\n'.join([KEY_ACTIVE_DEVICES, bare_jid]) |
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178 d = self.data.get(key, {}) |
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179 if callback is not None: |
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180 self.setCb(d, callback) |
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181 return d |
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182 |
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183 def loadInactiveDevices(self, callback, bare_jid): |
| 3028 | 184 key = '\n'.join([KEY_INACTIVE_DEVICES, bare_jid]) |
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185 d = self.data.get(key, {}) |
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186 if callback is not None: |
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187 self.setCb(d, callback) |
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188 return d |
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189 |
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190 def storeActiveDevices(self, callback, bare_jid, devices): |
| 3028 | 191 key = '\n'.join([KEY_ACTIVE_DEVICES, bare_jid]) |
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192 d = self._checkJid(bare_jid) |
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193 d.addCallback(lambda _: self.data.force(key, devices)) |
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194 self.setCb(d, callback) |
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195 |
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196 def storeInactiveDevices(self, callback, bare_jid, devices): |
| 3028 | 197 key = '\n'.join([KEY_INACTIVE_DEVICES, bare_jid]) |
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198 d = self._checkJid(bare_jid) |
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199 d.addCallback(lambda _: self.data.force(key, devices)) |
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200 self.setCb(d, callback) |
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201 |
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202 def storeTrust(self, callback, bare_jid, device_id, trust): |
| 3028 | 203 key = '\n'.join([KEY_TRUST, bare_jid, str(device_id)]) |
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204 d = self.data.force(key, trust) |
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205 self.setCb(d, callback) |
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206 |
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207 def loadTrust(self, callback, bare_jid, device_id): |
| 3028 | 208 key = '\n'.join([KEY_TRUST, bare_jid, str(device_id)]) |
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209 d = self.data.get(key) |
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210 if callback is not None: |
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211 self.setCb(d, callback) |
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212 return d |
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213 |
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214 def listJIDs(self, callback): |
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215 d = defer.succeed(self.all_jids) |
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216 if callback is not None: |
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217 self.setCb(d, callback) |
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218 return d |
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219 |
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220 def _deleteJID_logResults(self, results): |
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221 failed = [success for success, __ in results if not success] |
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222 if failed: |
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223 log.warning( |
| 3028 | 224 "delete JID failed for {failed_count} on {total_count} operations" |
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225 .format(failed_count=len(failed), total_count=len(results))) |
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226 else: |
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227 log.info( |
| 3028 | 228 "Delete JID operation succeed ({total_count} operations)." |
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229 .format(total_count=len(results))) |
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230 |
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231 def _deleteJID_gotDevices(self, results, bare_jid): |
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232 assert len(results) == 2 |
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233 active_success, active_devices = results[0] |
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234 inactive_success, inactive_devices = results[0] |
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235 d_list = [] |
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236 for success, devices in results: |
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237 if not success: |
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238 log.warning("Can't retrieve devices for {bare_jid}: {reason}" |
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239 .format(bare_jid=bare_jid, reason=active_devices)) |
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240 else: |
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241 for device_id in devices: |
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242 for key in (KEY_SESSION, KEY_TRUST): |
| 3028 | 243 k = '\n'.join([key, bare_jid, str(device_id)]) |
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244 d_list.append(self.data.remove(k)) |
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245 |
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246 d_list.append(self.data.remove(KEY_ACTIVE_DEVICES, bare_jid)) |
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247 d_list.append(self.data.remove(KEY_INACTIVE_DEVICES, bare_jid)) |
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248 d_list.append(lambda __: self.all_jids.discard(bare_jid)) |
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249 # FIXME: there is a risk of race condition here, |
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250 # if self.all_jids is modified between discard and force) |
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251 d_list.append(lambda __: self.data.force(KEY_ALL_JIDS, self.all_jids)) |
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252 d = defer.DeferredList(d_list) |
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253 d.addCallback(self._deleteJID_logResults) |
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254 return d |
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255 |
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256 def deleteJID(self, callback, bare_jid): |
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257 """Retrieve all (in)actives of bare_jid, and delete all related keys""" |
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258 d_list = [] |
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259 |
| 3028 | 260 key = '\n'.join([KEY_ACTIVE_DEVICES, bare_jid]) |
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261 d_list.append(self.data.get(key, [])) |
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262 |
| 3028 | 263 key = '\n'.join([KEY_INACTIVE_DEVICES, bare_jid]) |
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264 d_inactive = self.data.get(key, {}) |
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265 # inactive devices are returned as a dict mapping from devices_id to timestamp |
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266 # but we only need devices ids |
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267 d_inactive.addCallback(lambda devices: [k for k, __ in devices]) |
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268 |
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269 d_list.append(d_inactive) |
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270 d = defer.DeferredList(d_list) |
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271 d.addCallback(self._deleteJID_gotDevices, bare_jid) |
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272 if callback is not None: |
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273 self.setCb(d, callback) |
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274 return d |
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275 |
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276 |
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277 class SatOTPKPolicy(omemo.DefaultOTPKPolicy): |
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278 pass |
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279 |
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280 |
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281 class OmemoSession(object): |
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282 """Wrapper to use omemo.OmemoSession with Deferred""" |
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283 |
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284 def __init__(self, session): |
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285 self._session = session |
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286 |
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287 @property |
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288 def republish_bundle(self): |
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289 return self._session.republish_bundle |
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290 |
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291 @property |
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292 def public_bundle(self): |
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293 return self._session.public_bundle |
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294 |
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295 @classmethod |
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296 def create(cls, client, storage, my_device_id = None): |
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297 omemo_session_p = omemo.SessionManager.create( |
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298 storage, |
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299 SatOTPKPolicy, |
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300 omemo_backend, |
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301 client.jid.userhost(), |
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302 my_device_id) |
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303 d = promise2Deferred(omemo_session_p) |
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304 d.addCallback(lambda session: cls(session)) |
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305 return d |
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306 |
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307 def newDeviceList(self, jid, devices): |
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308 jid = jid.userhost() |
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309 new_device_p = self._session.newDeviceList(jid, devices) |
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310 return promise2Deferred(new_device_p) |
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311 |
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312 def getDevices(self, bare_jid=None): |
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313 get_devices_p = self._session.getDevices(bare_jid=bare_jid) |
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314 return promise2Deferred(get_devices_p) |
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315 |
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316 def buildSession(self, bare_jid, device, bundle): |
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317 bare_jid = bare_jid.userhost() |
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318 build_session_p = self._session.buildSession(bare_jid, device, bundle) |
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319 return promise2Deferred(build_session_p) |
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320 |
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321 def encryptMessage(self, bare_jids, message, bundles=None, expect_problems=None): |
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322 """Encrypt a message |
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323 |
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324 @param bare_jids(iterable[jid.JID]): destinees of the message |
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325 @param message(unicode): message to encode |
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326 @param bundles(dict[jid.JID, dict[int, ExtendedPublicBundle]): |
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327 entities => devices => bundles map |
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328 @return D(dict): encryption data |
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329 """ |
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330 if isinstance(bare_jids, jid.JID): |
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331 bare_jids = bare_jids.userhost() |
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332 else: |
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333 bare_jids = [e.userhost() for e in bare_jids] |
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334 if bundles is not None: |
| 3028 | 335 bundles = {e.userhost(): v for e, v in bundles.items()} |
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336 encrypt_mess_p = self._session.encryptMessage( |
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337 bare_jids=bare_jids, |
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338 plaintext=message.encode('utf-8'), |
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339 bundles=bundles, |
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340 expect_problems=expect_problems) |
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341 return promise2Deferred(encrypt_mess_p) |
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342 |
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343 def decryptMessage(self, bare_jid, device, iv, message, is_pre_key_message, |
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344 ciphertext, additional_information=None, allow_untrusted=False): |
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345 bare_jid = bare_jid.userhost() |
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346 decrypt_mess_p = self._session.decryptMessage( |
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347 bare_jid=bare_jid, |
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348 device=device, |
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349 iv=iv, |
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350 message=message, |
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351 is_pre_key_message=is_pre_key_message, |
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352 ciphertext=ciphertext, |
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353 additional_information=additional_information, |
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354 allow_untrusted=allow_untrusted |
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355 ) |
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356 return promise2Deferred(decrypt_mess_p) |
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357 |
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358 def trust(self, bare_jid, device, key): |
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359 bare_jid = bare_jid.userhost() |
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360 trust_p = self._session.trust( |
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361 bare_jid=bare_jid, |
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362 device=device, |
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363 key=key) |
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364 return promise2Deferred(trust_p) |
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365 |
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366 def distrust(self, bare_jid, device, key): |
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367 bare_jid = bare_jid.userhost() |
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368 distrust_p = self._session.distrust( |
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369 bare_jid=bare_jid, |
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370 device=device, |
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371 key=key) |
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372 return promise2Deferred(distrust_p) |
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373 |
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374 def getTrustForJID(self, bare_jid): |
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375 bare_jid = bare_jid.userhost() |
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376 get_trust_p = self._session.getTrustForJID(bare_jid=bare_jid) |
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377 return promise2Deferred(get_trust_p) |
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378 |
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379 |
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380 class OMEMO(object): |
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381 |
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382 def __init__(self, host): |
| 3028 | 383 log.info(_("OMEMO plugin initialization (omemo module v{version})").format( |
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384 version=omemo.__version__)) |
| 3028 | 385 version = tuple(map(int, omemo.__version__.split('.')[:3])) |
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386 if version < OMEMO_MIN_VER: |
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387 log.warning(_( |
| 3028 | 388 "Your version of omemo module is too old: {v[0]}.{v[1]}.{v[2]} is " |
| 389 "minimum required), please update.").format(v=OMEMO_MIN_VER)) | |
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390 raise exceptions.CancelError("module is too old") |
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391 self.host = host |
| 3028 | 392 self._p_hints = host.plugins["XEP-0334"] |
| 393 self._p_carbons = host.plugins["XEP-0280"] | |
| 394 self._p = host.plugins["XEP-0060"] | |
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395 host.trigger.add("MessageReceived", self._messageReceivedTrigger, priority=100050) |
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396 host.trigger.add("sendMessageData", self._sendMessageDataTrigger) |
| 3028 | 397 self.host.registerEncryptionPlugin(self, "OMEMO", NS_OMEMO, 100) |
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398 pep = host.plugins['XEP-0163'] |
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399 pep.addPEPEvent("OMEMO_DEVICES", NS_OMEMO_DEVICES, self.onNewDevices) |
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400 |
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401 @defer.inlineCallbacks |
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402 def trustUICb(self, xmlui_data, trust_data, expect_problems=None, |
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403 profile=C.PROF_KEY_NONE): |
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404 if C.bool(xmlui_data.get('cancelled', 'false')): |
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405 defer.returnValue({}) |
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406 client = self.host.getClient(profile) |
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407 session = client._xep_0384_session |
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408 answer = xml_tools.XMLUIResult2DataFormResult(xmlui_data) |
| 3028 | 409 for key, value in answer.items(): |
| 410 if key.startswith('trust_'): | |
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411 trust_id = key[6:] |
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412 else: |
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413 continue |
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414 data = trust_data[trust_id] |
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415 trust = C.bool(value) |
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416 if trust: |
| 3028 | 417 yield session.trust(data["jid"], |
| 418 data["device"], | |
| 419 data["ik"]) | |
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420 else: |
| 3028 | 421 yield session.distrust(data["jid"], |
| 422 data["device"], | |
| 423 data["ik"]) | |
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424 if expect_problems is not None: |
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425 expect_problems.setdefault(data.bare_jid, set()).add(data.device) |
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426 defer.returnValue({}) |
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427 |
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428 |
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429 |
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430 @defer.inlineCallbacks |
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431 def getTrustUI(self, client, entity_jid=None, trust_data=None, submit_id=None): |
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432 """Generate a XMLUI to manage trust |
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433 |
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434 @param entity_jid(None, jid.JID): jid of entity to manage |
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435 None to use trust_data |
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436 @param trust_data(None, dict): devices data: |
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437 None to use entity_jid |
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438 else a dict mapping from trust ids (unicode) to devices data, |
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439 where a device data must have the following keys: |
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440 - jid(jid.JID): bare jid of the device owner |
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441 - device(int): device id |
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442 - ik(bytes): identity key |
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443 and may have the following key: |
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444 - trusted(bool): True if device is trusted |
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445 @param submit_id(None, unicode): submit_id to use |
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446 if None set UI callback to trustUICb |
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447 @return D(xmlui): trust management form |
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448 """ |
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449 # we need entity_jid xor trust_data |
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450 assert entity_jid and not trust_data or not entity_jid and trust_data |
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451 if entity_jid and entity_jid.resource: |
| 3028 | 452 raise ValueError("A bare jid is expected") |
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453 |
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454 session = client._xep_0384_session |
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455 |
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456 if trust_data is None: |
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457 cache = client._xep_0384_cache.setdefault(entity_jid, {}) |
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458 trust_data = {} |
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459 trust_session_data = yield session.getTrustForJID(entity_jid) |
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460 bare_jid_s = entity_jid.userhost() |
| 3028 | 461 for device_id, trust_info in trust_session_data['active'].items(): |
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462 if trust_info is None: |
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463 # device has never been (un)trusted, we have to retrieve its |
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464 # fingerprint (i.e. identity key or "ik") through public bundle |
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465 if device_id not in cache: |
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466 bundles, missing = yield self.getBundles(client, |
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467 entity_jid, |
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468 [device_id]) |
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469 if device_id not in bundles: |
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470 log.warning(_( |
| 3028 | 471 "Can't find bundle for device {device_id} of user " |
| 472 "{bare_jid}, ignoring").format(device_id=device_id, | |
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473 bare_jid=bare_jid_s)) |
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474 continue |
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475 cache[device_id] = bundles[device_id] |
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476 # TODO: replace False below by None when undecided |
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477 # trusts are handled |
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478 trust_info = { |
| 3028 | 479 "key": cache[device_id].ik, |
| 480 "trusted": False | |
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481 } |
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482 |
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483 ik = trust_info["key"] |
| 3028 | 484 trust_id = str(hash((bare_jid_s, device_id, ik))) |
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485 trust_data[trust_id] = { |
| 3028 | 486 "jid": entity_jid, |
| 487 "device": device_id, | |
| 488 "ik": ik, | |
| 489 "trusted": trust_info["trusted"], | |
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490 } |
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491 |
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492 if submit_id is None: |
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493 submit_id = self.host.registerCallback(partial(self.trustUICb, |
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494 trust_data=trust_data), |
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495 with_data=True, |
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496 one_shot=True) |
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497 xmlui = xml_tools.XMLUI( |
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498 panel_type = C.XMLUI_FORM, |
| 3028 | 499 title = D_("OMEMO trust management"), |
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500 submit_id = submit_id |
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501 ) |
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502 xmlui.addText(D_( |
| 3028 | 503 "This is OMEMO trusting system. You'll see below the devices of your " |
| 504 "contacts, and a checkbox to trust them or not. A trusted device " | |
| 505 "can read your messages in plain text, so be sure to only validate " | |
| 506 "devices that you are sure are belonging to your contact. It's better " | |
| 507 "to do this when you are next to your contact and her/his device, so " | |
| 508 "you can check the \"fingerprint\" (the number next to the device) " | |
| 509 "yourself. Do *not* validate a device if the fingerprint is wrong!")) | |
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510 |
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511 xmlui.changeContainer("label") |
| 3028 | 512 xmlui.addLabel(D_("This device ID")) |
| 513 xmlui.addText(str(client._xep_0384_device_id)) | |
| 514 xmlui.addLabel(D_("This device fingerprint")) | |
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515 ik_hex = session.public_bundle.ik.encode('hex').upper() |
| 3028 | 516 fp_human = ' '.join([ik_hex[i:i+8] for i in range(0, len(ik_hex), 8)]) |
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517 xmlui.addText(fp_human) |
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518 xmlui.addEmpty() |
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519 xmlui.addEmpty() |
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520 |
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521 |
| 3028 | 522 for trust_id, data in trust_data.items(): |
| 523 xmlui.addLabel(D_("Contact")) | |
| 524 xmlui.addJid(data['jid']) | |
| 525 xmlui.addLabel(D_("Device ID")) | |
| 526 xmlui.addText(str(data['device'])) | |
| 527 xmlui.addLabel(D_("Fingerprint")) | |
| 528 ik_hex = data['ik'].encode('hex').upper() | |
| 529 fp_human = ' '.join([ik_hex[i:i+8] for i in range(0, len(ik_hex), 8)]) | |
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530 xmlui.addText(fp_human) |
| 3028 | 531 xmlui.addLabel(D_("Trust this device?")) |
| 532 xmlui.addBool("trust_{}".format(trust_id), | |
| 533 value=C.boolConst(data.get('trusted', False))) | |
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534 |
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535 xmlui.addEmpty() |
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536 xmlui.addEmpty() |
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537 |
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538 defer.returnValue(xmlui) |
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539 |
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540 @defer.inlineCallbacks |
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541 def profileConnected(self, client): |
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542 # FIXME: is _xep_0384_ready needed? can we use profileConnecting? |
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543 # Workflow should be checked |
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544 client._xep_0384_ready = defer.Deferred() |
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545 # we first need to get devices ids (including our own) |
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546 persistent_dict = persistent.LazyPersistentBinaryDict("XEP-0384", client.profile) |
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547 # all known devices of profile |
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548 devices = yield self.getDevices(client) |
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549 # and our own device id |
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550 device_id = yield persistent_dict.get(KEY_DEVICE_ID) |
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551 if device_id is None: |
| 3028 | 552 log.info(_("We have no identity for this device yet, let's generate one")) |
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553 # we have a new device, we create device_id |
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554 device_id = random.randint(1, 2**31-1) |
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555 # we check that it's really unique |
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556 while device_id in devices: |
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557 device_id = random.randint(1, 2**31-1) |
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558 # and we save it |
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559 persistent_dict[KEY_DEVICE_ID] = device_id |
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560 |
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561 if device_id not in devices: |
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562 devices.add(device_id) |
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563 yield self.setDevices(client, devices) |
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564 |
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565 all_jids = yield persistent_dict.get(KEY_ALL_JIDS, set()) |
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566 |
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567 omemo_storage = OmemoStorage(client, device_id, all_jids, persistent_dict) |
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568 omemo_session = yield OmemoSession.create(client, omemo_storage, device_id) |
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569 client._xep_0384_cache = {} |
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570 client._xep_0384_session = omemo_session |
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571 client._xep_0384_device_id = device_id |
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572 yield omemo_session.newDeviceList(client.jid, devices) |
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573 if omemo_session.republish_bundle: |
| 3028 | 574 log.info(_("Saving public bundle for this device ({device_id})").format( |
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575 device_id=device_id)) |
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576 yield self.setBundle(client, omemo_session.public_bundle, device_id) |
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577 client._xep_0384_ready.callback(None) |
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578 del client._xep_0384_ready |
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579 |
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580 ## XMPP PEP nodes manipulation |
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581 |
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582 # devices |
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583 |
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584 def parseDevices(self, items): |
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585 """Parse devices found in items |
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586 |
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587 @param items(iterable[domish.Element]): items as retrieved by getItems |
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588 @return set[int]: parsed devices |
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589 """ |
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590 devices = set() |
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591 if len(items) > 1: |
| 3028 | 592 log.warning(_("OMEMO devices list is stored in more that one items, " |
| 593 "this is not expected")) | |
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594 if items: |
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595 try: |
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596 list_elt = next(items[0].elements(NS_OMEMO, 'list')) |
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597 except StopIteration: |
| 3028 | 598 log.warning(_("no list element found in OMEMO devices list")) |
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599 return |
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600 for device_elt in list_elt.elements(NS_OMEMO, 'device'): |
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601 try: |
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602 device_id = int(device_elt['id']) |
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603 except KeyError: |
| 3028 | 604 log.warning(_('device element is missing "id" attribute: {elt}') |
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605 .format(elt=device_elt.toXml())) |
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606 except ValueError: |
| 3028 | 607 log.warning(_('invalid device id: {device_id}').format( |
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608 device_id=device_elt['id'])) |
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609 else: |
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610 devices.add(device_id) |
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611 return devices |
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612 |
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613 @defer.inlineCallbacks |
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614 def getDevices(self, client, entity_jid=None): |
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615 """Retrieve list of registered OMEMO devices |
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616 |
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617 @param entity_jid(jid.JID, None): get devices from this entity |
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618 None to get our own devices |
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619 @return (set(int)): list of devices |
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620 """ |
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621 if entity_jid is not None: |
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622 assert not entity_jid.resource |
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623 try: |
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624 items, metadata = yield self._p.getItems(client, entity_jid, NS_OMEMO_DEVICES) |
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625 except error.StanzaError as e: |
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626 if e.condition == 'item-not-found': |
| 3028 | 627 log.info(_("there is no node to handle OMEMO devices")) |
|
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628 defer.returnValue(set()) |
|
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629 raise e |
|
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630 |
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631 devices = self.parseDevices(items) |
|
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632 defer.returnValue(devices) |
|
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633 |
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634 def setDevicesEb(self, failure_): |
| 3028 | 635 log.warning(_("Can't set devices: {reason}").format(reason=failure_)) |
|
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636 |
|
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637 def setDevices(self, client, devices): |
|
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638 list_elt = domish.Element((NS_OMEMO, 'list')) |
|
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639 for device in devices: |
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640 device_elt = list_elt.addElement('device') |
| 3028 | 641 device_elt['id'] = str(device) |
|
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642 d = self._p.sendItem( |
|
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643 client, None, NS_OMEMO_DEVICES, list_elt, item_id=self._p.ID_SINGLETON) |
|
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644 d.addErrback(self.setDevicesEb) |
|
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|
645 return d |
|
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|
646 |
|
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|
647 # bundles |
|
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|
648 |
|
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|
649 @defer.inlineCallbacks |
|
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|
650 def getBundles(self, client, entity_jid, devices_ids): |
|
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|
651 """Retrieve public bundles of an entity devices |
|
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|
652 |
|
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|
653 @param entity_jid(jid.JID): bare jid of entity |
|
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|
654 @param devices_id(iterable[int]): ids of the devices bundles to retrieve |
|
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|
655 @return (tuple(dict[int, ExtendedPublicBundle], list(int))): |
|
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|
656 - bundles collection: |
|
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657 * key is device_id |
|
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|
658 * value is parsed bundle |
|
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|
659 - set of bundles not found |
|
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|
660 """ |
|
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|
661 assert not entity_jid.resource |
|
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|
662 bundles = {} |
|
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|
663 missing = set() |
|
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|
664 for device_id in devices_ids: |
|
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|
665 node = NS_OMEMO_BUNDLE.format(device_id=device_id) |
|
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|
666 try: |
|
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|
667 items, metadata = yield self._p.getItems(client, entity_jid, node) |
|
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|
668 except error.StanzaError as e: |
| 3028 | 669 if e.condition == "item-not-found": |
| 670 log.warning(_("Bundle missing for device {device_id}") | |
|
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|
671 .format(device_id=device_id)) |
|
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|
672 missing.add(device_id) |
|
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|
673 continue |
|
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|
674 else: |
| 3028 | 675 log.warning(_("Can't get bundle for device {device_id}: {reason}") |
|
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|
676 .format(device_id=device_id, reason=e)) |
|
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|
677 continue |
|
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|
678 if not items: |
| 3028 | 679 log.warning(_("no item found in node {node}, can't get public bundle " |
| 680 "for device {device_id}").format(node=node, | |
|
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|
681 device_id=device_id)) |
|
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|
682 continue |
|
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|
683 if len(items) > 1: |
| 3028 | 684 log.warning(_("more than one item found in {node}, " |
| 685 "this is not expected").format(node=node)) | |
|
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|
686 item = items[0] |
|
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|
687 try: |
|
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|
688 bundle_elt = next(item.elements(NS_OMEMO, 'bundle')) |
|
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|
689 signedPreKeyPublic_elt = next(bundle_elt.elements( |
|
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|
690 NS_OMEMO, 'signedPreKeyPublic')) |
|
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|
691 signedPreKeySignature_elt = next(bundle_elt.elements( |
|
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|
692 NS_OMEMO, 'signedPreKeySignature')) |
|
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|
693 identityKey_elt = next(bundle_elt.elements( |
|
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|
694 NS_OMEMO, 'identityKey')) |
|
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|
695 prekeys_elt = next(bundle_elt.elements( |
|
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changeset
|
696 NS_OMEMO, 'prekeys')) |
|
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|
697 except StopIteration: |
| 3028 | 698 log.warning(_("invalid bundle for device {device_id}, ignoring").format( |
|
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|
699 device_id=device_id)) |
|
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changeset
|
700 continue |
|
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changeset
|
701 |
|
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|
702 try: |
| 3028 | 703 spkPublic = base64.b64decode(str(signedPreKeyPublic_elt)) |
|
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|
704 spkSignature = base64.b64decode( |
| 3028 | 705 str(signedPreKeySignature_elt)) |
|
2648
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|
706 |
| 3028 | 707 ik = base64.b64decode(str(identityKey_elt)) |
|
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|
708 spk = { |
|
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709 "key": spkPublic, |
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710 "id": int(signedPreKeyPublic_elt['signedPreKeyId']) |
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711 } |
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712 otpks = [] |
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713 for preKeyPublic_elt in prekeys_elt.elements(NS_OMEMO, 'preKeyPublic'): |
| 3028 | 714 preKeyPublic = base64.b64decode(str(preKeyPublic_elt)) |
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715 otpk = { |
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716 "key": preKeyPublic, |
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717 "id": int(preKeyPublic_elt['preKeyId']) |
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718 } |
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719 otpks.append(otpk) |
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720 |
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721 except Exception as e: |
| 3028 | 722 log.warning(_("error while decoding key for device {device_id}: {msg}") |
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723 .format(device_id=device_id, msg=e)) |
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724 continue |
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|
725 |
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726 bundles[device_id] = ExtendedPublicBundle.parse(omemo_backend, ik, spk, |
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727 spkSignature, otpks) |
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728 |
|
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729 defer.returnValue((bundles, missing)) |
|
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730 |
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731 def setBundleEb(self, failure_): |
| 3028 | 732 log.warning(_("Can't set bundle: {reason}").format(reason=failure_)) |
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733 |
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734 def setBundle(self, client, bundle, device_id): |
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735 """Set public bundle for this device. |
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736 |
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737 @param bundle(ExtendedPublicBundle): bundle to publish |
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738 """ |
| 3028 | 739 log.debug(_("updating bundle for {device_id}").format(device_id=device_id)) |
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740 bundle = bundle.serialize(omemo_backend) |
|
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741 bundle_elt = domish.Element((NS_OMEMO, 'bundle')) |
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742 signedPreKeyPublic_elt = bundle_elt.addElement( |
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743 "signedPreKeyPublic", |
|
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744 content=b64enc(bundle["spk"]['key'])) |
| 3028 | 745 signedPreKeyPublic_elt['signedPreKeyId'] = str(bundle["spk"]['id']) |
|
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746 |
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747 bundle_elt.addElement( |
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748 "signedPreKeySignature", |
|
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749 content=b64enc(bundle["spk_signature"])) |
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750 |
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|
751 bundle_elt.addElement( |
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752 "identityKey", |
|
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753 content=b64enc(bundle["ik"])) |
|
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754 |
|
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|
755 prekeys_elt = bundle_elt.addElement('prekeys') |
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756 for otpk in bundle["otpks"]: |
|
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757 preKeyPublic_elt = prekeys_elt.addElement( |
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|
758 'preKeyPublic', |
|
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759 content=b64enc(otpk["key"])) |
| 3028 | 760 preKeyPublic_elt['preKeyId'] = str(otpk['id']) |
|
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|
761 |
|
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762 node = NS_OMEMO_BUNDLE.format(device_id=device_id) |
|
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763 d = self._p.sendItem(client, None, node, bundle_elt, item_id=self._p.ID_SINGLETON) |
|
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764 d.addErrback(self.setBundleEb) |
|
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|
765 return d |
|
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|
766 |
|
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767 ## PEP node events callbacks |
|
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|
768 |
|
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|
769 @defer.inlineCallbacks |
|
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|
770 def onNewDevices(self, itemsEvent, profile): |
|
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|
771 client = self.host.getClient(profile) |
|
2925
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|
772 try: |
|
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|
773 omemo_session = client._xep_0384_session |
|
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|
774 except AttributeError: |
|
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|
775 yield client._xep_0384_ready |
|
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|
776 omemo_session = client._xep_0384_session |
|
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777 entity = itemsEvent.sender |
|
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778 |
|
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|
779 devices = self.parseDevices(itemsEvent.items) |
|
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|
780 omemo_session.newDeviceList(entity, devices) |
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|
781 |
|
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diff
changeset
|
782 if entity == client.jid.userhostJID(): |
|
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|
783 own_device = client._xep_0384_device_id |
|
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|
784 if own_device not in devices: |
| 3028 | 785 log.warning(_("Our own device is missing from devices list, fixing it")) |
|
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|
786 devices.add(own_device) |
|
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|
787 yield self.setDevices(client, devices) |
|
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|
788 |
|
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|
789 ## triggers |
|
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|
790 |
|
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|
791 @defer.inlineCallbacks |
|
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792 def handleProblems(self, client, entity, bundles, expect_problems, problems): |
|
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|
793 """Try to solve problems found by EncryptMessage |
|
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|
794 |
|
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|
795 @param entity(jid.JID): bare jid of the destinee |
|
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|
796 @param bundles(dict): bundles data as used in EncryptMessage |
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|
797 already filled with known bundles, missing bundles |
|
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|
798 need to be added to it |
|
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|
799 This dict is updated |
|
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|
800 @param problems(list): exceptions raised by EncryptMessage |
|
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|
801 @param expect_problems(dict): known problems to expect, used in encryptMessage |
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|
802 This dict will list devices where problems can be ignored |
|
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|
803 (those devices won't receive the encrypted data) |
|
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|
804 This dict is updated |
|
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|
805 """ |
|
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|
806 # FIXME: not all problems are handled yet |
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|
807 untrusted = {} |
|
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808 missing_bundles = {} |
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|
809 cache = client._xep_0384_cache |
|
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|
810 for problem in problems: |
|
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|
811 if isinstance(problem, omemo_excpt.TrustException): |
| 3028 | 812 untrusted[str(hash(problem))] = problem |
|
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813 elif isinstance(problem, omemo_excpt.MissingBundleException): |
|
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814 pb_entity = jid.JID(problem.bare_jid) |
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815 entity_cache = cache.setdefault(pb_entity, {}) |
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|
816 entity_bundles = bundles.setdefault(pb_entity, {}) |
|
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|
817 if problem.device in entity_cache: |
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|
818 entity_bundles[problem.device] = entity_cache[problem.device] |
|
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|
819 else: |
|
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820 found_bundles, missing = yield self.getBundles( |
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|
821 client, pb_entity, [problem.device]) |
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|
822 entity_cache.update(bundles) |
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|
823 entity_bundles.update(found_bundles) |
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|
824 if problem.device in missing: |
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825 missing_bundles.setdefault(pb_entity, set()).add( |
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|
826 problem.device) |
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827 expect_problems.setdefault(problem.bare_jid, set()).add( |
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|
828 problem.device) |
|
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829 elif isinstance(problem, omemo_excpt.NoEligibleDevicesException): |
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830 if untrusted or found_bundles: |
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|
831 # we may have new devices after this run, so let's continue for now |
|
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|
832 continue |
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|
833 else: |
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|
834 raise problem |
|
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835 else: |
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836 raise problem |
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837 |
| 3028 | 838 for peer_jid, devices in missing_bundles.items(): |
| 839 devices_s = [str(d) for d in devices] | |
|
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840 log.warning( |
| 3028 | 841 _("Can't retrieve bundle for device(s) {devices} of entity {peer}, " |
| 842 "the message will not be readable on this/those device(s)").format( | |
| 843 devices=", ".join(devices_s), peer=peer_jid.full())) | |
|
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|
844 client.feedback( |
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|
845 entity, |
| 3028 | 846 D_("You're destinee {peer} has missing encryption data on some of " |
| 847 "his/her device(s) (bundle on device {devices}), the message won't " | |
| 848 "be readable on this/those device.").format( | |
| 849 peer=peer_jid.full(), devices=", ".join(devices_s))) | |
|
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850 |
|
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|
851 if untrusted: |
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|
852 trust_data = {} |
| 3028 | 853 for trust_id, data in untrusted.items(): |
|
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|
854 trust_data[trust_id] = { |
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|
855 'jid': jid.JID(data.bare_jid), |
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|
856 'device': data.device, |
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|
857 'ik': data.ik} |
|
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|
858 |
| 3028 | 859 user_msg = D_("Not all destination devices are trusted, we can't encrypt " |
| 860 "message in such a situation. Please indicate if you trust " | |
| 861 "those devices or not in the trust manager before we can " | |
|
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|
862 "send this message") |
|
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|
863 client.feedback(entity, user_msg) |
| 3028 | 864 xmlui = yield self.getTrustUI(client, trust_data=trust_data, submit_id="") |
|
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865 |
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866 answer = yield xml_tools.deferXMLUI( |
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|
867 self.host, |
|
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|
868 xmlui, |
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|
869 action_extra={ |
| 3028 | 870 "meta_encryption_trust": NS_OMEMO, |
|
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|
871 }, |
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|
872 profile=client.profile) |
|
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|
873 yield self.trustUICb(answer, trust_data, expect_problems, client.profile) |
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|
874 |
|
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|
875 @defer.inlineCallbacks |
|
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|
876 def encryptMessage(self, client, entity_bare_jid, message): |
|
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|
877 omemo_session = client._xep_0384_session |
|
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|
878 expect_problems = {} |
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|
879 bundles = {} |
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|
880 loop_idx = 0 |
|
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|
881 try: |
|
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|
882 while True: |
|
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|
883 if loop_idx > 10: |
| 3028 | 884 msg = _("Too many iterations in encryption loop") |
|
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|
885 log.error(msg) |
|
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|
886 raise exceptions.InternalError(msg) |
|
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|
887 # encryptMessage may fail, in case of e.g. trust issue or missing bundle |
|
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|
888 try: |
|
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|
889 encrypted = yield omemo_session.encryptMessage( |
|
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|
890 entity_bare_jid, |
|
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|
891 message, |
|
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|
892 bundles, |
|
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|
893 expect_problems = expect_problems) |
|
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changeset
|
894 except omemo_excpt.EncryptionProblemsException as e: |
|
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changeset
|
895 # we know the problem to solve, we can try to fix them |
|
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|
896 yield self.handleProblems( |
|
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|
897 client, |
|
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|
898 entity=entity_bare_jid, |
|
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changeset
|
899 bundles=bundles, |
|
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|
900 expect_problems=expect_problems, |
|
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|
901 problems=e.problems) |
|
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|
902 loop_idx += 1 |
|
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changeset
|
903 else: |
|
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changeset
|
904 break |
|
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changeset
|
905 except Exception as e: |
| 3028 | 906 msg = _("Can't encrypt message for {entity}: {reason}".format( |
|
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|
907 entity=entity_bare_jid.full(), reason=str(e).decode('utf-8', 'replace'))) |
|
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|
908 log.warning(msg) |
|
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|
909 extra = {C.MESS_EXTRA_INFO: C.EXTRA_INFO_ENCR_ERR} |
|
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changeset
|
910 client.feedback(entity_bare_jid, msg, extra) |
|
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|
911 raise e |
|
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|
912 |
|
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|
913 defer.returnValue(encrypted) |
|
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|
914 |
|
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|
915 @defer.inlineCallbacks |
|
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|
916 def _messageReceivedTrigger(self, client, message_elt, post_treat): |
|
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|
917 if message_elt.getAttribute("type") == C.MESS_TYPE_GROUPCHAT: |
|
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|
918 defer.returnValue(True) |
|
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|
919 try: |
| 3028 | 920 encrypted_elt = next(message_elt.elements(NS_OMEMO, "encrypted")) |
|
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|
921 except StopIteration: |
|
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|
922 # no OMEMO message here |
|
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|
923 defer.returnValue(True) |
|
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|
924 |
|
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changeset
|
925 # we have an encrypted message let's decrypt it |
|
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|
926 from_jid = jid.JID(message_elt['from']) |
|
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|
927 if from_jid.userhostJID() == client.jid.userhostJID(): |
|
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|
928 feedback_jid = jid.JID(message_elt['to']) |
|
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|
929 else: |
|
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|
930 feedback_jid = from_jid |
|
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|
931 try: |
|
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|
932 omemo_session = client._xep_0384_session |
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|
933 except AttributeError: |
|
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|
934 # on startup, message can ve received before session actually exists |
|
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changeset
|
935 # so we need to synchronise here |
|
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|
936 yield client._xep_0384_ready |
|
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|
937 omemo_session = client._xep_0384_session |
|
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Goffi <goffi@goffi.org>
parents:
2662
diff
changeset
|
938 |
|
2648
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
939 device_id = client._xep_0384_device_id |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
940 try: |
| 3028 | 941 header_elt = next(encrypted_elt.elements(NS_OMEMO, 'header')) |
| 942 iv_elt = next(header_elt.elements(NS_OMEMO, 'iv')) | |
|
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plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
943 except StopIteration: |
| 3028 | 944 log.warning(_("Invalid OMEMO encrypted stanza, ignoring: {xml}") |
|
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plugin XEP-0384: OMEMO implementation first draft:
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parents:
diff
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|
945 .format(xml=message_elt.toXml())) |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
946 defer.returnValue(False) |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
947 try: |
|
2654
e7bfbded652a
plugin XEP-0384, install: adapted plugin to omemo module changes + added omemo module to dependencies:
Goffi <goffi@goffi.org>
parents:
2648
diff
changeset
|
948 s_device_id = header_elt['sid'] |
|
e7bfbded652a
plugin XEP-0384, install: adapted plugin to omemo module changes + added omemo module to dependencies:
Goffi <goffi@goffi.org>
parents:
2648
diff
changeset
|
949 except KeyError: |
| 3028 | 950 log.warning(_("Invalid OMEMO encrypted stanza, missing sender device ID, " |
| 951 "ignoring: {xml}") | |
|
2654
e7bfbded652a
plugin XEP-0384, install: adapted plugin to omemo module changes + added omemo module to dependencies:
Goffi <goffi@goffi.org>
parents:
2648
diff
changeset
|
952 .format(xml=message_elt.toXml())) |
|
e7bfbded652a
plugin XEP-0384, install: adapted plugin to omemo module changes + added omemo module to dependencies:
Goffi <goffi@goffi.org>
parents:
2648
diff
changeset
|
953 defer.returnValue(False) |
|
e7bfbded652a
plugin XEP-0384, install: adapted plugin to omemo module changes + added omemo module to dependencies:
Goffi <goffi@goffi.org>
parents:
2648
diff
changeset
|
954 try: |
| 3028 | 955 key_elt = next((e for e in header_elt.elements(NS_OMEMO, 'key') |
| 956 if int(e['rid']) == device_id)) | |
|
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plugin XEP-0384: OMEMO implementation first draft:
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parents:
diff
changeset
|
957 except StopIteration: |
| 3028 | 958 log.warning(_("This OMEMO encrypted stanza has not been encrypted " |
| 959 "for our device (device_id: {device_id}, fingerprint: " | |
| 960 "{fingerprint}): {xml}").format( | |
|
2738
eb58f26ed236
plugin XEP-0384: update to last python-omemo + trust management:
Goffi <goffi@goffi.org>
parents:
2662
diff
changeset
|
961 device_id=device_id, |
|
eb58f26ed236
plugin XEP-0384: update to last python-omemo + trust management:
Goffi <goffi@goffi.org>
parents:
2662
diff
changeset
|
962 fingerprint=omemo_session.public_bundle.ik.encode('hex'), |
|
eb58f26ed236
plugin XEP-0384: update to last python-omemo + trust management:
Goffi <goffi@goffi.org>
parents:
2662
diff
changeset
|
963 xml=encrypted_elt.toXml())) |
| 3028 | 964 user_msg = (D_("An OMEMO message from {sender} has not been encrypted for " |
| 965 "our device, we can't decrypt it").format( | |
|
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plugin XEP-0384: better bundle handling + misc improvments
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2771
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changeset
|
966 sender=from_jid.full())) |
|
0ab62dd3cf05
plugin XEP-0384: better bundle handling + misc improvments
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parents:
2771
diff
changeset
|
967 extra = {C.MESS_EXTRA_INFO: C.EXTRA_INFO_DECR_ERR} |
|
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plugin XEP-0384: better bundle handling + misc improvments
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parents:
2771
diff
changeset
|
968 client.feedback(feedback_jid, user_msg, extra) |
|
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parents:
diff
changeset
|
969 defer.returnValue(False) |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
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parents:
diff
changeset
|
970 except ValueError as e: |
| 3028 | 971 log.warning(_("Invalid recipient ID: {msg}".format(msg=e))) |
|
2648
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plugin XEP-0384: OMEMO implementation first draft:
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parents:
diff
changeset
|
972 defer.returnValue(False) |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
973 is_pre_key = C.bool(key_elt.getAttribute('prekey', 'false')) |
| 3028 | 974 payload_elt = next(encrypted_elt.elements(NS_OMEMO, 'payload'), None) |
|
2738
eb58f26ed236
plugin XEP-0384: update to last python-omemo + trust management:
Goffi <goffi@goffi.org>
parents:
2662
diff
changeset
|
975 additional_information = { |
|
eb58f26ed236
plugin XEP-0384: update to last python-omemo + trust management:
Goffi <goffi@goffi.org>
parents:
2662
diff
changeset
|
976 "from_storage": bool(message_elt.delay) |
|
eb58f26ed236
plugin XEP-0384: update to last python-omemo + trust management:
Goffi <goffi@goffi.org>
parents:
2662
diff
changeset
|
977 } |
|
2648
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
978 |
|
2738
eb58f26ed236
plugin XEP-0384: update to last python-omemo + trust management:
Goffi <goffi@goffi.org>
parents:
2662
diff
changeset
|
979 kwargs = { |
|
eb58f26ed236
plugin XEP-0384: update to last python-omemo + trust management:
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parents:
2662
diff
changeset
|
980 "bare_jid": from_jid.userhostJID(), |
|
eb58f26ed236
plugin XEP-0384: update to last python-omemo + trust management:
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parents:
2662
diff
changeset
|
981 "device": s_device_id, |
|
eb58f26ed236
plugin XEP-0384: update to last python-omemo + trust management:
Goffi <goffi@goffi.org>
parents:
2662
diff
changeset
|
982 "iv": base64.b64decode(bytes(iv_elt)), |
|
eb58f26ed236
plugin XEP-0384: update to last python-omemo + trust management:
Goffi <goffi@goffi.org>
parents:
2662
diff
changeset
|
983 "message": base64.b64decode(bytes(key_elt)), |
|
eb58f26ed236
plugin XEP-0384: update to last python-omemo + trust management:
Goffi <goffi@goffi.org>
parents:
2662
diff
changeset
|
984 "is_pre_key_message": is_pre_key, |
|
eb58f26ed236
plugin XEP-0384: update to last python-omemo + trust management:
Goffi <goffi@goffi.org>
parents:
2662
diff
changeset
|
985 "ciphertext": base64.b64decode(bytes(payload_elt)) |
|
eb58f26ed236
plugin XEP-0384: update to last python-omemo + trust management:
Goffi <goffi@goffi.org>
parents:
2662
diff
changeset
|
986 if payload_elt is not None else None, |
|
eb58f26ed236
plugin XEP-0384: update to last python-omemo + trust management:
Goffi <goffi@goffi.org>
parents:
2662
diff
changeset
|
987 "additional_information": additional_information, |
|
eb58f26ed236
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Goffi <goffi@goffi.org>
parents:
2662
diff
changeset
|
988 } |
|
2648
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parents:
diff
changeset
|
989 try: |
|
2738
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plugin XEP-0384: update to last python-omemo + trust management:
Goffi <goffi@goffi.org>
parents:
2662
diff
changeset
|
990 try: |
|
eb58f26ed236
plugin XEP-0384: update to last python-omemo + trust management:
Goffi <goffi@goffi.org>
parents:
2662
diff
changeset
|
991 plaintext = yield omemo_session.decryptMessage(**kwargs) |
|
2857
88f10630d5ea
plugin XEP-0384: removed version restriction, it is now compatible with (and require) last version of python-omemo (0.10.4)
Goffi <goffi@goffi.org>
parents:
2823
diff
changeset
|
992 except omemo_excpt.TrustException: |
|
2738
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plugin XEP-0384: update to last python-omemo + trust management:
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parents:
2662
diff
changeset
|
993 post_treat.addCallback(client.encryption.markAsUntrusted) |
|
eb58f26ed236
plugin XEP-0384: update to last python-omemo + trust management:
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parents:
2662
diff
changeset
|
994 kwargs['allow_untrusted'] = True |
|
eb58f26ed236
plugin XEP-0384: update to last python-omemo + trust management:
Goffi <goffi@goffi.org>
parents:
2662
diff
changeset
|
995 plaintext = yield omemo_session.decryptMessage(**kwargs) |
|
2744
e6716d90c2fe
plugin XEP-0384: various bug fixes:
Goffi <goffi@goffi.org>
parents:
2738
diff
changeset
|
996 else: |
|
e6716d90c2fe
plugin XEP-0384: various bug fixes:
Goffi <goffi@goffi.org>
parents:
2738
diff
changeset
|
997 post_treat.addCallback(client.encryption.markAsTrusted) |
|
2648
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
998 except Exception as e: |
| 3028 | 999 log.warning(_("Can't decrypt message: {reason}\n{xml}").format( |
|
2648
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1000 reason=e, xml=message_elt.toXml())) |
| 3028 | 1001 user_msg = (D_("An OMEMO message from {sender} can't be decrypted: {reason}") |
|
2754
3bea6b5ae972
plugin XEP-0380, XEP-0384: use C.EXTRA_INFO_DECR_ERR as info sub-type when a message can't be decrypted.
Goffi <goffi@goffi.org>
parents:
2750
diff
changeset
|
1002 .format(sender=from_jid.full(), reason=e)) |
|
3bea6b5ae972
plugin XEP-0380, XEP-0384: use C.EXTRA_INFO_DECR_ERR as info sub-type when a message can't be decrypted.
Goffi <goffi@goffi.org>
parents:
2750
diff
changeset
|
1003 extra = {C.MESS_EXTRA_INFO: C.EXTRA_INFO_DECR_ERR} |
|
2817
0ab62dd3cf05
plugin XEP-0384: better bundle handling + misc improvments
Goffi <goffi@goffi.org>
parents:
2771
diff
changeset
|
1004 client.feedback(feedback_jid, user_msg, extra) |
|
2648
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plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1005 defer.returnValue(False) |
|
2817
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plugin XEP-0384: better bundle handling + misc improvments
Goffi <goffi@goffi.org>
parents:
2771
diff
changeset
|
1006 finally: |
|
0ab62dd3cf05
plugin XEP-0384: better bundle handling + misc improvments
Goffi <goffi@goffi.org>
parents:
2771
diff
changeset
|
1007 if omemo_session.republish_bundle: |
|
0ab62dd3cf05
plugin XEP-0384: better bundle handling + misc improvments
Goffi <goffi@goffi.org>
parents:
2771
diff
changeset
|
1008 # we don't wait for the Deferred (i.e. no yield) on purpose |
|
0ab62dd3cf05
plugin XEP-0384: better bundle handling + misc improvments
Goffi <goffi@goffi.org>
parents:
2771
diff
changeset
|
1009 # there is no need to block the whole message workflow while |
|
0ab62dd3cf05
plugin XEP-0384: better bundle handling + misc improvments
Goffi <goffi@goffi.org>
parents:
2771
diff
changeset
|
1010 # updating the bundle |
|
0ab62dd3cf05
plugin XEP-0384: better bundle handling + misc improvments
Goffi <goffi@goffi.org>
parents:
2771
diff
changeset
|
1011 self.setBundle(client, omemo_session.public_bundle, device_id) |
|
2648
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plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1012 |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
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parents:
diff
changeset
|
1013 message_elt.children.remove(encrypted_elt) |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1014 if plaintext: |
| 3028 | 1015 message_elt.addElement("body", content=plaintext) |
|
2662
0bef44f8e8ca
plugin XEP-0384: PEP handling + mark as encrypted:
Goffi <goffi@goffi.org>
parents:
2654
diff
changeset
|
1016 post_treat.addCallback(client.encryption.markAsEncrypted) |
|
2648
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1017 defer.returnValue(True) |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1018 |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
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parents:
diff
changeset
|
1019 @defer.inlineCallbacks |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
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parents:
diff
changeset
|
1020 def _sendMessageDataTrigger(self, client, mess_data): |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
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parents:
diff
changeset
|
1021 encryption = mess_data.get(C.MESS_KEY_ENCRYPTION) |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
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parents:
diff
changeset
|
1022 if encryption is None or encryption['plugin'].namespace != NS_OMEMO: |
|
0f76813afc57
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Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1023 return |
|
0f76813afc57
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parents:
diff
changeset
|
1024 message_elt = mess_data["xml"] |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1025 to_jid = mess_data["to"].userhostJID() |
| 3028 | 1026 log.debug("encrypting message") |
|
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parents:
diff
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|
1027 body = None |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
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parents:
diff
changeset
|
1028 for child in list(message_elt.children): |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1029 if child.name == "body": |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1030 # we remove all unencrypted body, |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1031 # and will only encrypt the first one |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1032 if body is None: |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1033 body = child |
|
0f76813afc57
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Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1034 message_elt.children.remove(child) |
|
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plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1035 elif child.name == "html": |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1036 # we don't want any XHTML-IM element |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1037 message_elt.children.remove(child) |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1038 |
|
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plugin XEP-0384: OMEMO implementation first draft:
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parents:
diff
changeset
|
1039 if body is None: |
| 3028 | 1040 log.warning("No message found") |
|
2648
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parents:
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changeset
|
1041 return |
|
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parents:
diff
changeset
|
1042 |
| 3028 | 1043 encryption_data = yield self.encryptMessage(client, to_jid, str(body)) |
|
2648
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parents:
diff
changeset
|
1044 |
|
0f76813afc57
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parents:
diff
changeset
|
1045 encrypted_elt = message_elt.addElement((NS_OMEMO, 'encrypted')) |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1046 header_elt = encrypted_elt.addElement('header') |
| 3028 | 1047 header_elt['sid'] = str(encryption_data['sid']) |
|
2648
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parents:
diff
changeset
|
1048 bare_jid_s = to_jid.userhost() |
|
0f76813afc57
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Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1049 |
| 3028 | 1050 for rid, data in encryption_data['keys'][bare_jid_s].items(): |
|
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parents:
diff
changeset
|
1051 key_elt = header_elt.addElement( |
|
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parents:
diff
changeset
|
1052 'key', |
|
2738
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diff
changeset
|
1053 content=b64enc(data['data'])) |
| 3028 | 1054 key_elt['rid'] = str(rid) |
|
2738
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diff
changeset
|
1055 if data['pre_key']: |
|
2648
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parents:
diff
changeset
|
1056 key_elt['prekey'] = 'true' |
|
0f76813afc57
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Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1057 |
|
0f76813afc57
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Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1058 header_elt.addElement( |
|
0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
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1059 'iv', |
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0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
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1060 content=b64enc(encryption_data['iv'])) |
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0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1061 try: |
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0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1062 encrypted_elt.addElement( |
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0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1063 'payload', |
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0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1064 content=b64enc(encryption_data['payload'])) |
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0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1065 except KeyError: |
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0f76813afc57
plugin XEP-0384: OMEMO implementation first draft:
Goffi <goffi@goffi.org>
parents:
diff
changeset
|
1066 pass |