Mercurial > libervia-backend
annotate sat/plugins/plugin_sec_otr.py @ 2657:9190874a8ac5
plugin otr: use namespace specified in XEP-0378
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Sat, 11 Aug 2018 18:24:55 +0200 |
| parents | 7213caa5c5d0 |
| children | c26492bd2144 |
| rev | line source |
|---|---|
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1 #!/usr/bin/env python2 |
| 1055 | 2 # -*- coding: utf-8 -*- |
| 3 | |
| 4 # SAT plugin for OTR encryption | |
| 2483 | 5 # Copyright (C) 2009-2018 Jérôme Poisson (goffi@goffi.org) |
| 1055 | 6 |
| 7 # This program is free software: you can redistribute it and/or modify | |
| 8 # it under the terms of the GNU Affero General Public License as published by | |
| 9 # the Free Software Foundation, either version 3 of the License, or | |
| 10 # (at your option) any later version. | |
| 11 | |
| 12 # This program is distributed in the hope that it will be useful, | |
| 13 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 # GNU Affero General Public License for more details. | |
| 16 | |
| 17 # You should have received a copy of the GNU Affero General Public License | |
| 18 # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 | |
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20 # XXX: thanks to Darrik L Mazey for his documentation |
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21 # (https://blog.darmasoft.net/2013/06/30/using-pure-python-otr.html) |
| 1055 | 22 # this implentation is based on it |
| 23 | |
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24 from sat.core.i18n import _, D_ |
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25 from sat.core.constants import Const as C |
| 1055 | 26 from sat.core.log import getLogger |
| 27 from sat.core import exceptions | |
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28 |
| 1055 | 29 log = getLogger(__name__) |
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30 from sat.tools import xml_tools |
| 1055 | 31 from twisted.words.protocols.jabber import jid |
| 32 from twisted.python import failure | |
| 1095 | 33 from twisted.internet import defer |
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34 from sat.memory import persistent |
| 1055 | 35 import potr |
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36 import copy |
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37 import time |
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38 import uuid |
| 1095 | 39 |
| 2125 | 40 |
| 1055 | 41 PLUGIN_INFO = { |
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42 C.PI_NAME: u"OTR", |
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43 C.PI_IMPORT_NAME: u"OTR", |
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44 C.PI_TYPE: u"SEC", |
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45 C.PI_PROTOCOLS: [u"XEP-0364"], |
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46 C.PI_DEPENDENCIES: [u"XEP-0280", u"XEP-0334"], |
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47 C.PI_MAIN: u"OTR", |
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48 C.PI_HANDLER: u"no", |
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49 C.PI_DESCRIPTION: _(u"""Implementation of OTR"""), |
| 1055 | 50 } |
| 51 | |
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52 NS_OTR = "urn:xmpp:otr:0" |
| 2128 | 53 PRIVATE_KEY = "PRIVATE KEY" |
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54 OTR_MENU = D_(u"OTR") |
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55 AUTH_TXT = D_( |
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56 u"To authenticate your correspondent, you need to give your below fingerprint " |
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57 u"*BY AN EXTERNAL CANAL* (i.e. not in this chat), and check that the one he gives " |
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58 u"you is the same as below. If there is a mismatch, there can be a spy between you!" |
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59 ) |
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60 DROP_TXT = D_( |
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61 u"You private key is used to encrypt messages for your correspondent, nobody except " |
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62 u"you must know it, if you are in doubt, you should drop it!\n\nAre you sure you " |
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63 u"want to drop your private key?" |
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64 ) |
| 2128 | 65 # NO_LOG_AND = D_(u"/!\\Your history is not logged anymore, and") # FIXME: not used at the moment |
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66 NO_ADV_FEATURES = D_(u"Some of advanced features are disabled !") |
| 2128 | 67 |
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68 DEFAULT_POLICY_FLAGS = {"ALLOW_V1": False, "ALLOW_V2": True, "REQUIRE_ENCRYPTION": True} |
| 2128 | 69 |
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70 OTR_STATE_TRUSTED = "trusted" |
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71 OTR_STATE_UNTRUSTED = "untrusted" |
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72 OTR_STATE_UNENCRYPTED = "unencrypted" |
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73 OTR_STATE_ENCRYPTED = "encrypted" |
| 2128 | 74 |
| 1055 | 75 |
| 76 class Context(potr.context.Context): | |
| 1095 | 77 def __init__(self, host, account, other_jid): |
| 78 super(Context, self).__init__(account, other_jid) | |
| 1055 | 79 self.host = host |
| 80 | |
| 81 def getPolicy(self, key): | |
| 82 if key in DEFAULT_POLICY_FLAGS: | |
| 83 return DEFAULT_POLICY_FLAGS[key] | |
| 84 else: | |
| 85 return False | |
| 86 | |
| 1095 | 87 def inject(self, msg_str, appdata=None): |
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88 """Inject encrypted data in the stream |
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89 |
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90 if appdata is not None, we are sending a message in sendMessageDataTrigger |
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91 stanza will be injected directly if appdata is None, |
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92 else we just update the element and follow normal workflow |
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93 @param msg_str(str): encrypted message body |
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94 @param appdata(None, dict): None for signal message, |
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95 message data when an encrypted message is going to be sent |
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96 """ |
| 1095 | 97 assert isinstance(self.peer, jid.JID) |
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98 msg = msg_str.decode("utf-8") |
| 1095 | 99 client = self.user.client |
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100 log.debug(u"injecting encrypted message to {to}".format(to=self.peer)) |
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101 if appdata is None: |
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102 mess_data = { |
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103 "from": client.jid, |
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104 "to": self.peer, |
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105 "uid": unicode(uuid.uuid4()), |
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106 "message": {"": msg}, |
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107 "subject": {}, |
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108 "type": "chat", |
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109 "extra": {}, |
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110 "timestamp": time.time(), |
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111 } |
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112 client.generateMessageXML(mess_data) |
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113 client.send(mess_data["xml"]) |
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114 else: |
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115 message_elt = appdata[u"xml"] |
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116 assert message_elt.name == u"message" |
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117 message_elt.addElement("body", content=msg) |
| 1055 | 118 |
| 119 def setState(self, state): | |
| 2128 | 120 client = self.user.client |
| 1095 | 121 old_state = self.state |
| 1055 | 122 super(Context, self).setState(state) |
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123 log.debug(u"setState: %s (old_state=%s)" % (state, old_state)) |
| 1095 | 124 |
| 125 if state == potr.context.STATE_PLAINTEXT: | |
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126 client.encryption.stop(self.peer, NS_OTR) |
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127 feedback = _(u"/!\\ conversation with %(other_jid)s is now UNENCRYPTED") % { |
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128 "other_jid": self.peer.full() |
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129 } |
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130 self.host.bridge.otrState( |
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131 OTR_STATE_UNENCRYPTED, self.peer.full(), client.profile |
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132 ) |
| 1095 | 133 elif state == potr.context.STATE_ENCRYPTED: |
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134 client.encryption.start(self.peer, NS_OTR) |
| 1095 | 135 try: |
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136 trusted = self.getCurrentTrust() |
| 1095 | 137 except TypeError: |
| 138 trusted = False | |
| 139 trusted_str = _(u"trusted") if trusted else _(u"untrusted") | |
| 140 | |
| 141 if old_state == potr.context.STATE_ENCRYPTED: | |
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142 feedback = D_( |
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143 u"{trusted} OTR conversation with {other_jid} REFRESHED" |
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144 ).format(trusted=trusted_str, other_jid=self.peer.full()) |
| 1095 | 145 else: |
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146 feedback = D_( |
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147 u"{trusted} encrypted OTR conversation started with {other_jid}\n" |
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148 u"{extra_info}" |
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149 ).format( |
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150 trusted=trusted_str, |
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151 other_jid=self.peer.full(), |
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152 extra_info=NO_ADV_FEATURES, |
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153 ) |
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154 self.host.bridge.otrState( |
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155 OTR_STATE_ENCRYPTED, self.peer.full(), client.profile |
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156 ) |
| 1095 | 157 elif state == potr.context.STATE_FINISHED: |
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158 client.encryption.stop(self.peer, NS_OTR) |
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159 feedback = D_(u"OTR conversation with {other_jid} is FINISHED").format( |
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160 other_jid=self.peer.full() |
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161 ) |
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162 self.host.bridge.otrState( |
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163 OTR_STATE_UNENCRYPTED, self.peer.full(), client.profile |
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164 ) |
| 1095 | 165 else: |
| 2125 | 166 log.error(D_(u"Unknown OTR state")) |
| 1095 | 167 return |
| 168 | |
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169 client.feedback(self.peer, feedback) |
| 1055 | 170 |
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171 def disconnect(self): |
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172 """Disconnect the session.""" |
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173 if self.state != potr.context.STATE_PLAINTEXT: |
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174 super(Context, self).disconnect() |
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175 |
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176 def finish(self): |
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177 """Finish the session |
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178 |
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179 avoid to send any message but the user still has to end the session himself. |
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180 """ |
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181 if self.state == potr.context.STATE_ENCRYPTED: |
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182 self.processTLVs([potr.proto.DisconnectTLV()]) |
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183 |
| 1055 | 184 |
| 185 class Account(potr.context.Account): | |
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186 # TODO: manage trusted keys: if a fingerprint is not used anymore, |
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187 # we have no way to remove it from database yet (same thing for a |
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188 # correspondent jid) |
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189 # TODO: manage explicit message encryption |
| 1055 | 190 |
| 1095 | 191 def __init__(self, host, client): |
| 192 log.debug(u"new account: %s" % client.jid) | |
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193 if not client.jid.resource: |
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194 log.warning("Account created without resource") |
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195 super(Account, self).__init__(unicode(client.jid), "xmpp", 1024) |
| 1095 | 196 self.host = host |
| 197 self.client = client | |
| 1055 | 198 |
| 199 def loadPrivkey(self): | |
| 1095 | 200 log.debug(u"loadPrivkey") |
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201 return self.privkey |
| 1055 | 202 |
| 203 def savePrivkey(self): | |
| 1095 | 204 log.debug(u"savePrivkey") |
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205 if self.privkey is None: |
| 2125 | 206 raise exceptions.InternalError(_(u"Save is called but privkey is None !")) |
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207 priv_key = self.privkey.serializePrivateKey().encode("hex") |
| 1095 | 208 d = self.host.memory.encryptValue(priv_key, self.client.profile) |
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209 |
| 1095 | 210 def save_encrypted_key(encrypted_priv_key): |
| 2128 | 211 self.client._otr_data[PRIVATE_KEY] = encrypted_priv_key |
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212 |
| 1095 | 213 d.addCallback(save_encrypted_key) |
| 1055 | 214 |
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215 def loadTrusts(self): |
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216 trust_data = self.client._otr_data.get("trust", {}) |
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217 for jid_, jid_data in trust_data.iteritems(): |
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218 for fingerprint, trust_level in jid_data.iteritems(): |
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219 log.debug( |
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220 u'setting trust for {jid}: [{fingerprint}] = "{trust_level}"'.format( |
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221 jid=jid_, fingerprint=fingerprint, trust_level=trust_level |
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222 ) |
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223 ) |
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224 self.trusts.setdefault(jid.JID(jid_), {})[fingerprint] = trust_level |
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225 |
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226 def saveTrusts(self): |
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227 log.debug(u"saving trusts for {profile}".format(profile=self.client.profile)) |
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228 log.debug(u"trusts = {}".format(self.client._otr_data["trust"])) |
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229 self.client._otr_data.force("trust") |
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230 |
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231 def setTrust(self, other_jid, fingerprint, trustLevel): |
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232 try: |
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233 trust_data = self.client._otr_data["trust"] |
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234 except KeyError: |
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235 trust_data = {} |
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236 self.client._otr_data["trust"] = trust_data |
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237 jid_data = trust_data.setdefault(other_jid.full(), {}) |
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238 jid_data[fingerprint] = trustLevel |
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239 super(Account, self).setTrust(other_jid, fingerprint, trustLevel) |
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240 |
| 1055 | 241 |
| 242 class ContextManager(object): | |
| 243 def __init__(self, host, client): | |
| 244 self.host = host | |
| 1095 | 245 self.account = Account(host, client) |
| 1055 | 246 self.contexts = {} |
| 247 | |
| 1095 | 248 def startContext(self, other_jid): |
| 249 assert isinstance(other_jid, jid.JID) | |
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250 context = self.contexts.setdefault( |
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251 other_jid, Context(self.host, self.account, other_jid) |
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252 ) |
| 1095 | 253 return context |
| 1055 | 254 |
| 255 def getContextForUser(self, other): | |
| 1095 | 256 log.debug(u"getContextForUser [%s]" % other) |
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257 if not other.resource: |
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258 log.warning(u"getContextForUser called with a bare jid: %s" % other.full()) |
| 1055 | 259 return self.startContext(other) |
| 260 | |
| 261 | |
| 262 class OTR(object): | |
| 263 def __init__(self, host): | |
| 1095 | 264 log.info(_(u"OTR plugin initialization")) |
| 1055 | 265 self.host = host |
| 266 self.context_managers = {} | |
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267 self.skipped_profiles = ( |
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268 set() |
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269 ) # FIXME: OTR should not be skipped per profile, this need to be refactored |
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270 self._p_hints = host.plugins[u"XEP-0334"] |
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271 self._p_carbons = host.plugins[u"XEP-0280"] |
| 1055 | 272 host.trigger.add("MessageReceived", self.MessageReceivedTrigger, priority=100000) |
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273 host.trigger.add("sendMessage", self.sendMessageTrigger, priority=100000) |
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274 host.trigger.add("sendMessageData", self._sendMessageDataTrigger) |
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275 host.bridge.addMethod( |
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276 "skipOTR", ".plugin", in_sign="s", out_sign="", method=self._skipOTR |
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277 ) # FIXME: must be removed, must be done on per-message basis |
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278 host.bridge.addSignal( |
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279 "otrState", ".plugin", signature="sss" |
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280 ) # args: state, destinee_jid, profile |
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281 host.importMenu( |
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282 (OTR_MENU, D_(u"Start/Refresh")), |
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283 self._otrStartRefresh, |
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284 security_limit=0, |
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285 help_string=D_(u"Start or refresh an OTR session"), |
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286 type_=C.MENU_SINGLE, |
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287 ) |
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288 host.importMenu( |
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289 (OTR_MENU, D_(u"End session")), |
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290 self._otrSessionEnd, |
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291 security_limit=0, |
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292 help_string=D_(u"Finish an OTR session"), |
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293 type_=C.MENU_SINGLE, |
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294 ) |
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295 host.importMenu( |
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296 (OTR_MENU, D_(u"Authenticate")), |
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297 self._otrAuthenticate, |
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298 security_limit=0, |
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299 help_string=D_(u"Authenticate user/see your fingerprint"), |
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300 type_=C.MENU_SINGLE, |
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301 ) |
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302 host.importMenu( |
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303 (OTR_MENU, D_(u"Drop private key")), |
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304 self._dropPrivKey, |
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305 security_limit=0, |
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306 type_=C.MENU_SINGLE, |
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307 ) |
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308 host.trigger.add("presenceReceived", self._presenceReceivedTrigger) |
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309 self.host.registerEncryptionPlugin(self, u"OTR", NS_OTR) |
| 1055 | 310 |
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311 def _skipOTR(self, profile): |
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312 """Tell the backend to not handle OTR for this profile. |
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313 |
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314 @param profile (str): %(doc_profile)s |
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315 """ |
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316 # FIXME: should not be done per profile but per message, using extra data |
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317 # for message received, profile wide hook may be need, but client |
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318 # should be used anyway instead of a class attribute |
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319 self.skipped_profiles.add(profile) |
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320 |
| 1095 | 321 @defer.inlineCallbacks |
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322 def profileConnected(self, client): |
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323 if client.profile in self.skipped_profiles: |
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324 return |
| 2128 | 325 ctxMng = client._otr_context_manager = ContextManager(self.host, client) |
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326 client._otr_data = persistent.PersistentBinaryDict(NS_OTR, client.profile) |
| 2128 | 327 yield client._otr_data.load() |
| 328 encrypted_priv_key = client._otr_data.get(PRIVATE_KEY, None) | |
| 1095 | 329 if encrypted_priv_key is not None: |
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330 priv_key = yield self.host.memory.decryptValue( |
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331 encrypted_priv_key, client.profile |
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332 ) |
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333 ctxMng.account.privkey = potr.crypt.PK.parsePrivateKey( |
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334 priv_key.decode("hex") |
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335 )[0] |
| 1095 | 336 else: |
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337 ctxMng.account.privkey = None |
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338 ctxMng.account.loadTrusts() |
| 1055 | 339 |
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340 def profileDisconnected(self, client): |
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341 if client.profile in self.skipped_profiles: |
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342 self.skipped_profiles.remove(client.profile) |
| 2128 | 343 return |
| 344 for context in client._otr_context_manager.contexts.values(): | |
| 345 context.disconnect() | |
| 346 del client._otr_context_manager | |
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347 |
| 2125 | 348 def _otrStartRefresh(self, menu_data, profile): |
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349 """Start or refresh an OTR session |
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350 |
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351 @param menu_data: %(menu_data)s |
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352 @param profile: %(doc_profile)s |
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353 """ |
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354 client = self.host.getClient(profile) |
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355 try: |
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356 to_jid = jid.JID(menu_data["jid"]) |
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357 except KeyError: |
| 2125 | 358 log.error(_(u"jid key is not present !")) |
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359 return defer.fail(exceptions.DataError) |
| 2125 | 360 self.startRefresh(client, to_jid) |
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361 return {} |
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362 |
| 2125 | 363 def startRefresh(self, client, to_jid): |
| 364 """Start or refresh an OTR session | |
| 365 | |
| 366 @param to_jid(jid.JID): jid to start encrypted session with | |
| 367 """ | |
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368 encrypted_session = client.encryption.getSession(to_jid.userhostJID()) |
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369 if encrypted_session and encrypted_session[u'plugin'].namespace != NS_OTR: |
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370 raise exceptions.ConflictError(_( |
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371 u"Can't start an OTR session, there is already an encrypted session " |
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372 u"with {name}").format(name=encrypted_session[u'plugin'].name)) |
| 2125 | 373 if not to_jid.resource: |
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374 to_jid.resource = self.host.memory.getMainResource( |
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375 client, to_jid |
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376 ) # FIXME: temporary and unsecure, must be changed when frontends |
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377 # are refactored |
| 2128 | 378 otrctx = client._otr_context_manager.getContextForUser(to_jid) |
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379 query = otrctx.sendMessage(0, "?OTRv?") |
| 2125 | 380 otrctx.inject(query) |
| 381 | |
| 382 def _otrSessionEnd(self, menu_data, profile): | |
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383 """End an OTR session |
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384 |
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385 @param menu_data: %(menu_data)s |
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386 @param profile: %(doc_profile)s |
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387 """ |
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388 client = self.host.getClient(profile) |
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389 try: |
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390 to_jid = jid.JID(menu_data["jid"]) |
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391 except KeyError: |
| 2125 | 392 log.error(_(u"jid key is not present !")) |
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393 return defer.fail(exceptions.DataError) |
| 2125 | 394 self.endSession(client, to_jid) |
| 395 return {} | |
| 396 | |
| 397 def endSession(self, client, to_jid): | |
| 398 """End an OTR session""" | |
| 399 if not to_jid.resource: | |
|
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400 to_jid.resource = self.host.memory.getMainResource( |
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401 client, to_jid |
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402 ) # FIXME: temporary and unsecure, must be changed when frontends |
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403 # are refactored |
| 2128 | 404 otrctx = client._otr_context_manager.getContextForUser(to_jid) |
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405 otrctx.disconnect() |
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406 return {} |
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407 |
| 2125 | 408 def _otrAuthenticate(self, menu_data, profile): |
| 409 """End an OTR session | |
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410 |
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411 @param menu_data: %(menu_data)s |
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412 @param profile: %(doc_profile)s |
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413 """ |
|
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414 client = self.host.getClient(profile) |
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415 try: |
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416 to_jid = jid.JID(menu_data["jid"]) |
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417 except KeyError: |
| 2125 | 418 log.error(_(u"jid key is not present !")) |
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419 return defer.fail(exceptions.DataError) |
| 2125 | 420 return self.authenticate(client, to_jid) |
| 421 | |
| 422 def authenticate(self, client, to_jid): | |
| 423 """Authenticate other user and see our own fingerprint""" | |
| 424 if not to_jid.resource: | |
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425 to_jid.resource = self.host.memory.getMainResource( |
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426 client, to_jid |
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427 ) # FIXME: temporary and unsecure, must be changed when frontends |
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428 # are refactored |
| 2128 | 429 ctxMng = client._otr_context_manager |
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430 otrctx = ctxMng.getContextForUser(to_jid) |
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431 priv_key = ctxMng.account.privkey |
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432 |
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433 if priv_key is None: |
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434 # we have no private key yet |
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435 dialog = xml_tools.XMLUI( |
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436 C.XMLUI_DIALOG, |
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437 dialog_opt={ |
|
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438 C.XMLUI_DATA_TYPE: C.XMLUI_DIALOG_MESSAGE, |
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439 C.XMLUI_DATA_MESS: _( |
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440 u"You have no private key yet, start an OTR conversation to " |
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441 u"have one" |
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442 ), |
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443 C.XMLUI_DATA_LVL: C.XMLUI_DATA_LVL_WARNING, |
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444 }, |
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445 title=_(u"No private key"), |
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446 ) |
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447 return {"xmlui": dialog.toXml()} |
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448 |
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449 other_fingerprint = otrctx.getCurrentKey() |
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450 |
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451 if other_fingerprint is None: |
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452 # we have a private key, but not the fingerprint of our correspondent |
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453 dialog = xml_tools.XMLUI( |
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454 C.XMLUI_DIALOG, |
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455 dialog_opt={ |
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456 C.XMLUI_DATA_TYPE: C.XMLUI_DIALOG_MESSAGE, |
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457 C.XMLUI_DATA_MESS: _( |
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458 u"Your fingerprint is:\n{fingerprint}\n\n" |
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459 u"Start an OTR conversation to have your correspondent one." |
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460 ).format(fingerprint=priv_key), |
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461 C.XMLUI_DATA_LVL: C.XMLUI_DATA_LVL_INFO, |
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462 }, |
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463 title=_(u"Fingerprint"), |
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464 ) |
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465 return {"xmlui": dialog.toXml()} |
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466 |
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467 def setTrust(raw_data, profile): |
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468 # This method is called when authentication form is submited |
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469 data = xml_tools.XMLUIResult2DataFormResult(raw_data) |
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470 if data["match"] == "yes": |
| 2128 | 471 otrctx.setCurrentTrust(OTR_STATE_TRUSTED) |
| 2125 | 472 note_msg = _(u"Your correspondent {correspondent} is now TRUSTED") |
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473 self.host.bridge.otrState( |
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474 OTR_STATE_TRUSTED, to_jid.full(), client.profile |
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475 ) |
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476 else: |
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477 otrctx.setCurrentTrust("") |
| 2125 | 478 note_msg = _(u"Your correspondent {correspondent} is now UNTRUSTED") |
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479 self.host.bridge.otrState( |
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480 OTR_STATE_UNTRUSTED, to_jid.full(), client.profile |
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481 ) |
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482 note = xml_tools.XMLUI( |
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483 C.XMLUI_DIALOG, |
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484 dialog_opt={ |
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485 C.XMLUI_DATA_TYPE: C.XMLUI_DIALOG_NOTE, |
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486 C.XMLUI_DATA_MESS: note_msg.format(correspondent=otrctx.peer), |
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487 }, |
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488 ) |
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489 return {"xmlui": note.toXml()} |
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490 |
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491 submit_id = self.host.registerCallback(setTrust, with_data=True, one_shot=True) |
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492 trusted = bool(otrctx.getCurrentTrust()) |
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493 |
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494 xmlui = xml_tools.XMLUI( |
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495 C.XMLUI_FORM, |
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496 title=_("Authentication (%s)") % to_jid.full(), |
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497 submit_id=submit_id, |
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498 ) |
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499 xmlui.addText(_(AUTH_TXT)) |
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500 xmlui.addDivider() |
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501 xmlui.addText( |
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502 D_(u"Your own fingerprint is:\n{fingerprint}").format(fingerprint=priv_key) |
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503 ) |
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504 xmlui.addText( |
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505 D_(u"Your correspondent fingerprint should be:\n{fingerprint}").format( |
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506 fingerprint=other_fingerprint |
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507 ) |
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508 ) |
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509 xmlui.addDivider("blank") |
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510 xmlui.changeContainer("pairs") |
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511 xmlui.addLabel(D_(u"Is your correspondent fingerprint the same as here ?")) |
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512 xmlui.addList( |
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513 "match", [("yes", _("yes")), ("no", _("no"))], ["yes" if trusted else "no"] |
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514 ) |
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515 return {"xmlui": xmlui.toXml()} |
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516 |
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517 def _dropPrivKey(self, menu_data, profile): |
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518 """Drop our private Key |
|
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519 |
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520 @param menu_data: %(menu_data)s |
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521 @param profile: %(doc_profile)s |
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522 """ |
|
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523 client = self.host.getClient(profile) |
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524 try: |
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525 to_jid = jid.JID(menu_data["jid"]) |
|
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526 if not to_jid.resource: |
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527 to_jid.resource = self.host.memory.getMainResource( |
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528 client, to_jid |
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529 ) # FIXME: temporary and unsecure, must be changed when frontends |
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530 # are refactored |
|
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531 except KeyError: |
| 2125 | 532 log.error(_(u"jid key is not present !")) |
|
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533 return defer.fail(exceptions.DataError) |
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534 |
| 2128 | 535 ctxMng = client._otr_context_manager |
|
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536 if ctxMng.account.privkey is None: |
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537 return { |
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538 "xmlui": xml_tools.note(_(u"You don't have a private key yet !")).toXml() |
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539 } |
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540 |
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|
541 def dropKey(data, profile): |
|
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542 if C.bool(data["answer"]): |
|
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543 # we end all sessions |
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544 for context in ctxMng.contexts.values(): |
|
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545 context.disconnect() |
|
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546 ctxMng.account.privkey = None |
|
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547 ctxMng.account.getPrivkey() # as account.privkey is None, getPrivkey |
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548 # will generate a new key, and save it |
|
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549 return { |
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550 "xmlui": xml_tools.note( |
|
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551 D_(u"Your private key has been dropped") |
|
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552 ).toXml() |
|
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553 } |
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554 return {} |
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555 |
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556 submit_id = self.host.registerCallback(dropKey, with_data=True, one_shot=True) |
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557 |
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558 confirm = xml_tools.XMLUI( |
|
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559 C.XMLUI_DIALOG, |
|
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560 title=_(u"Confirm private key drop"), |
|
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561 dialog_opt={"type": C.XMLUI_DIALOG_CONFIRM, "message": _(DROP_TXT)}, |
|
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562 submit_id=submit_id, |
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563 ) |
|
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564 return {"xmlui": confirm.toXml()} |
|
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565 |
| 2128 | 566 def _receivedTreatment(self, data, client): |
|
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567 from_jid = data["from"] |
| 1095 | 568 log.debug(u"_receivedTreatment [from_jid = %s]" % from_jid) |
| 2128 | 569 otrctx = client._otr_context_manager.getContextForUser(from_jid) |
| 1055 | 570 |
| 571 try: | |
|
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572 message = ( |
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573 data["message"].itervalues().next() |
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574 ) # FIXME: Q&D fix for message refactoring, message is now a dict |
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575 res = otrctx.receiveMessage(message.encode("utf-8")) |
| 1055 | 576 except potr.context.UnencryptedMessage: |
| 2128 | 577 encrypted = False |
| 1095 | 578 if otrctx.state == potr.context.STATE_ENCRYPTED: |
|
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579 log.warning( |
|
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580 u"Received unencrypted message in an encrypted context (from {jid})" |
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581 .format(jid=from_jid.full()) |
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582 ) |
| 2125 | 583 |
|
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584 feedback = ( |
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585 D_( |
|
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586 u"WARNING: received unencrypted data in a supposedly encrypted " |
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587 u"context" |
|
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588 ), |
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589 ) |
|
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590 client.feedback(from_jid, feedback) |
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591 except potr.context.NotEncryptedError: |
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592 msg = D_(u"WARNING: received OTR encrypted data in an unencrypted context") |
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|
593 log.warning(msg) |
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|
594 feedback = msg |
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|
595 client.feedback(from_jid, msg) |
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596 raise failure.Failure(exceptions.CancelError(msg)) |
|
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|
597 except StopIteration: |
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|
598 return data |
| 2128 | 599 else: |
| 600 encrypted = True | |
| 1055 | 601 |
| 2128 | 602 if encrypted: |
| 1055 | 603 if res[0] != None: |
| 604 # decrypted messages handling. | |
|
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605 # receiveMessage() will return a tuple, |
|
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|
606 # the first part of which will be the decrypted message |
|
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607 data["message"] = { |
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608 "": res[0].decode("utf-8") |
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609 } # FIXME: Q&D fix for message refactoring, message is now a dict |
|
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610 try: |
|
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|
611 # we want to keep message in history, even if no store is |
|
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|
612 # requested in message hints |
|
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|
613 del data[u"history"] |
|
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|
614 except KeyError: |
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|
615 pass |
| 2128 | 616 # TODO: add skip history as an option, but by default we don't skip it |
|
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|
617 # data[u'history'] = C.HISTORY_SKIP # we send the decrypted message to |
|
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|
618 # frontends, but we don't want it in |
|
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|
619 # history |
| 1055 | 620 else: |
|
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|
621 raise failure.Failure( |
|
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|
622 exceptions.CancelError("Cancelled by OTR") |
|
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|
623 ) # no message at all (no history, no signal) |
| 2128 | 624 return data |
| 1055 | 625 |
| 2128 | 626 def _receivedTreatmentForSkippedProfiles(self, data): |
|
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|
627 """This profile must be skipped because the frontend manages OTR itself, |
| 2128 | 628 |
| 629 but we still need to check if the message must be stored in history or not | |
| 630 """ | |
|
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|
631 # XXX: FIXME: this should not be done on a per-profile basis, but per-message |
|
1955
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|
632 try: |
|
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|
633 message = ( |
|
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|
634 data["message"].itervalues().next().encode("utf-8") |
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|
635 ) # FIXME: Q&D fix for message refactoring, message is now a dict |
|
1955
633b5c21aefd
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|
636 except StopIteration: |
|
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|
637 return data |
|
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diff
changeset
|
638 if message.startswith(potr.proto.OTRTAG): |
|
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|
639 # FIXME: it may be better to cancel the message and send it direclty to |
|
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|
640 # bridge |
|
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|
641 # this is used by Libervia, but this may send garbage message to |
|
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|
642 # other frontends |
|
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|
643 # if they are used at the same time as Libervia. |
|
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|
644 # Hard to avoid with decryption on Libervia though. |
|
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|
645 data[u"history"] = C.HISTORY_SKIP |
|
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|
646 return data |
|
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|
647 |
|
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|
648 def MessageReceivedTrigger(self, client, message_elt, post_treat): |
|
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|
649 if message_elt.getAttribute("type") == C.MESS_TYPE_GROUPCHAT: |
| 2128 | 650 # OTR is not possible in group chats |
| 651 return True | |
| 652 if client.profile in self.skipped_profiles: | |
| 653 post_treat.addCallback(self._receivedTreatmentForSkippedProfiles) | |
|
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|
654 else: |
| 2128 | 655 post_treat.addCallback(self._receivedTreatment, client) |
| 1055 | 656 return True |
| 657 | |
|
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|
658 def _sendMessageDataTrigger(self, client, mess_data): |
|
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|
659 encryption = mess_data.get(C.MESS_KEY_ENCRYPTION) |
|
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|
660 if encryption is None or encryption['plugin'].namespace != NS_OTR: |
|
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|
661 return |
|
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|
662 to_jid = mess_data['to'] |
|
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|
663 if not to_jid.resource: |
|
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|
664 to_jid.resource = self.host.memory.getMainResource( |
|
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|
665 client, to_jid |
|
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|
666 ) # FIXME: temporary and unsecure, must be changed when frontends |
|
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|
667 otrctx = client._otr_context_manager.getContextForUser(to_jid) |
|
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|
668 message_elt = mess_data["xml"] |
|
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|
669 if otrctx.state == potr.context.STATE_ENCRYPTED: |
|
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|
670 log.debug(u"encrypting message") |
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|
671 body = None |
|
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|
672 for child in list(message_elt.children): |
|
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|
673 if child.name == "body": |
|
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|
674 # we remove all unencrypted body, |
|
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changeset
|
675 # and will only encrypt the first one |
|
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changeset
|
676 if body is None: |
|
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|
677 body = child |
|
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|
678 message_elt.children.remove(child) |
|
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|
679 elif child.name == "html": |
|
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changeset
|
680 # we don't want any XHTML-IM element |
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681 message_elt.children.remove(child) |
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682 if body is None: |
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683 log.warning(u"No message found") |
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684 else: |
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685 self._p_carbons.setPrivate(message_elt) |
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686 self._p_hints.addHintElements(message_elt, [ |
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687 self._p_hints.HINT_NO_COPY, |
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688 self._p_hints.HINT_NO_PERMANENT_STORE]) |
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689 otrctx.sendMessage(0, unicode(body).encode("utf-8"), appdata=mess_data) |
| 1055 | 690 else: |
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691 feedback = D_( |
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692 u"Your message was not sent because your correspondent closed the " |
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693 u"encrypted conversation on his/her side. " |
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694 u"Either close your own side, or refresh the session." |
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695 ) |
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696 log.warning(_(u"Message discarded because closed encryption channel")) |
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697 client.feedback(to_jid, feedback) |
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698 raise failure.Failure(exceptions.CancelError(u"Cancelled by OTR plugin")) |
| 2128 | 699 |
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700 def sendMessageTrigger(self, client, mess_data, pre_xml_treatments, |
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701 post_xml_treatments): |
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702 if mess_data["type"] == "groupchat": |
| 1055 | 703 return True |
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704 |
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705 if client.profile in self.skipped_profiles: |
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706 # FIXME: should not be done on a per-profile basis |
| 2128 | 707 return True |
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708 |
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709 to_jid = copy.copy(mess_data["to"]) |
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710 if client.encryption.getSession(to_jid.userhostJID()): |
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711 # there is already an encrypted session with this entity |
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712 return True |
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713 |
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714 if not to_jid.resource: |
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715 to_jid.resource = self.host.memory.getMainResource( |
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716 client, to_jid |
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717 ) # FIXME: full jid may not be known |
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718 |
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719 otrctx = client._otr_context_manager.getContextForUser(to_jid) |
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720 |
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721 if otrctx.state != potr.context.STATE_PLAINTEXT: |
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722 client.encryption.start(to_jid, NS_OTR) |
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723 client.encryption.setEncryptionFlag(mess_data) |
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724 if not mess_data["to"].resource: |
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725 # if not resource was given, we force it here |
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726 mess_data["to"] = to_jid |
| 2128 | 727 return True |
| 1055 | 728 |
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729 def _presenceReceivedTrigger(self, entity, show, priority, statuses, profile): |
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730 if show != C.PRESENCE_UNAVAILABLE: |
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731 return True |
| 2128 | 732 client = self.host.getClient(profile) |
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733 if not entity.resource: |
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734 try: |
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735 entity.resource = self.host.memory.getMainResource( |
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736 client, entity |
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737 ) # FIXME: temporary and unsecure, must be changed when frontends |
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738 # are refactored |
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739 except exceptions.UnknownEntityError: |
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740 return True # entity was not connected |
| 2128 | 741 if entity in client._otr_context_manager.contexts: |
| 742 otrctx = client._otr_context_manager.getContextForUser(entity) | |
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743 otrctx.disconnect() |
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744 return True |