Mercurial > libervia-backend
annotate sat/plugins/plugin_sec_otr.py @ 2624:56f94936df1e
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| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Wed, 27 Jun 2018 20:14:46 +0200 |
| parents | 26edcf3a30eb |
| children | 189e38fb11ff |
| 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 | |
| 20 # XXX: thanks to Darrik L Mazey for his documentation (https://blog.darmasoft.net/2013/06/30/using-pure-python-otr.html) | |
| 21 # this implentation is based on it | |
| 22 | |
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23 from sat.core.i18n import _, D_ |
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24 from sat.core.constants import Const as C |
| 1055 | 25 from sat.core.log import getLogger |
| 26 from sat.core import exceptions | |
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27 |
| 1055 | 28 log = getLogger(__name__) |
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29 from sat.tools import xml_tools |
| 1055 | 30 from twisted.words.protocols.jabber import jid |
| 31 from twisted.python import failure | |
| 1095 | 32 from twisted.internet import defer |
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33 from sat.memory import persistent |
| 1055 | 34 import potr |
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35 import copy |
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36 import time |
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37 import uuid |
| 1095 | 38 |
| 2125 | 39 |
| 1055 | 40 PLUGIN_INFO = { |
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41 C.PI_NAME: u"OTR", |
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42 C.PI_IMPORT_NAME: u"OTR", |
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43 C.PI_TYPE: u"SEC", |
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44 C.PI_PROTOCOLS: [u"XEP-0364"], |
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45 C.PI_DEPENDENCIES: [u"XEP-0280", u"XEP-0334"], |
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46 C.PI_MAIN: u"OTR", |
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47 C.PI_HANDLER: u"no", |
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48 C.PI_DESCRIPTION: _(u"""Implementation of OTR"""), |
| 1055 | 49 } |
| 50 | |
| 2128 | 51 NS_OTR = "otr_plugin" |
| 52 PRIVATE_KEY = "PRIVATE KEY" | |
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53 OTR_MENU = D_(u"OTR") |
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54 AUTH_TXT = D_( |
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55 u"To authenticate your correspondent, you need to give your below fingerprint *BY AN EXTERNAL CANAL* (i.e. not in this chat), and check that the one he gives you is the same as below. If there is a mismatch, there can be a spy between you!" |
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56 ) |
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57 DROP_TXT = D_( |
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58 u"You private key is used to encrypt messages for your correspondent, nobody except you must know it, if you are in doubt, you should drop it!\n\nAre you sure you want to drop your private key?" |
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59 ) |
| 2128 | 60 # NO_LOG_AND = D_(u"/!\\Your history is not logged anymore, and") # FIXME: not used at the moment |
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61 NO_ADV_FEATURES = D_(u"Some of advanced features are disabled !") |
| 2128 | 62 |
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63 DEFAULT_POLICY_FLAGS = {"ALLOW_V1": False, "ALLOW_V2": True, "REQUIRE_ENCRYPTION": True} |
| 2128 | 64 |
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65 OTR_STATE_TRUSTED = "trusted" |
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66 OTR_STATE_UNTRUSTED = "untrusted" |
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67 OTR_STATE_UNENCRYPTED = "unencrypted" |
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68 OTR_STATE_ENCRYPTED = "encrypted" |
| 2128 | 69 |
| 1055 | 70 |
| 71 class Context(potr.context.Context): | |
| 1095 | 72 def __init__(self, host, account, other_jid): |
| 73 super(Context, self).__init__(account, other_jid) | |
| 1055 | 74 self.host = host |
| 75 | |
| 76 def getPolicy(self, key): | |
| 77 if key in DEFAULT_POLICY_FLAGS: | |
| 78 return DEFAULT_POLICY_FLAGS[key] | |
| 79 else: | |
| 80 return False | |
| 81 | |
| 1095 | 82 def inject(self, msg_str, appdata=None): |
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83 """Inject encrypted data in the stream |
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84 |
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85 if appdata is not None, we are sending a message in sendMessageDataTrigger |
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86 stanza will be injected directly if appdata is None, else we just update the element |
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87 and follow normal workflow |
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88 @param msg_str(str): encrypted message body |
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89 @param appdata(None, dict): None for signal message, |
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90 message data when an encrypted message is going to be sent |
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91 """ |
| 1095 | 92 assert isinstance(self.peer, jid.JID) |
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93 msg = msg_str.decode("utf-8") |
| 1095 | 94 client = self.user.client |
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95 log.debug(u"injecting encrypted message to {to}".format(to=self.peer)) |
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96 if appdata is None: |
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97 mess_data = { |
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98 "from": client.jid, |
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99 "to": self.peer, |
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100 "uid": unicode(uuid.uuid4()), |
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101 "message": {"": msg}, |
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102 "subject": {}, |
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103 "type": "chat", |
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104 "extra": {}, |
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105 "timestamp": time.time(), |
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106 } |
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107 client.generateMessageXML(mess_data) |
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108 client.send(mess_data["xml"]) |
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109 else: |
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110 message_elt = appdata[u"xml"] |
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111 assert message_elt.name == u"message" |
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112 message_elt.addElement("body", content=msg) |
| 1055 | 113 |
| 114 def setState(self, state): | |
| 2128 | 115 client = self.user.client |
| 1095 | 116 old_state = self.state |
| 1055 | 117 super(Context, self).setState(state) |
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118 log.debug(u"setState: %s (old_state=%s)" % (state, old_state)) |
| 1095 | 119 |
| 120 if state == potr.context.STATE_PLAINTEXT: | |
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121 feedback = _(u"/!\\ conversation with %(other_jid)s is now UNENCRYPTED") % { |
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122 "other_jid": self.peer.full() |
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123 } |
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124 self.host.bridge.otrState( |
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125 OTR_STATE_UNENCRYPTED, self.peer.full(), client.profile |
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126 ) |
| 1095 | 127 elif state == potr.context.STATE_ENCRYPTED: |
| 128 try: | |
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129 trusted = self.getCurrentTrust() |
| 1095 | 130 except TypeError: |
| 131 trusted = False | |
| 132 trusted_str = _(u"trusted") if trusted else _(u"untrusted") | |
| 133 | |
| 134 if old_state == potr.context.STATE_ENCRYPTED: | |
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135 feedback = D_( |
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136 u"{trusted} OTR conversation with {other_jid} REFRESHED" |
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137 ).format(trusted=trusted_str, other_jid=self.peer.full()) |
| 1095 | 138 else: |
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139 feedback = D_( |
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140 u"{trusted} encrypted OTR conversation started with {other_jid}\n{extra_info}" |
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141 ).format( |
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142 trusted=trusted_str, |
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143 other_jid=self.peer.full(), |
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144 extra_info=NO_ADV_FEATURES, |
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145 ) |
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146 self.host.bridge.otrState( |
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147 OTR_STATE_ENCRYPTED, self.peer.full(), client.profile |
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148 ) |
| 1095 | 149 elif state == potr.context.STATE_FINISHED: |
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150 feedback = D_(u"OTR conversation with {other_jid} is FINISHED").format( |
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151 other_jid=self.peer.full() |
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152 ) |
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153 self.host.bridge.otrState( |
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154 OTR_STATE_UNENCRYPTED, self.peer.full(), client.profile |
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155 ) |
| 1095 | 156 else: |
| 2125 | 157 log.error(D_(u"Unknown OTR state")) |
| 1095 | 158 return |
| 159 | |
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160 client.feedback(self.peer, feedback) |
| 1055 | 161 |
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162 def disconnect(self): |
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163 """Disconnect the session.""" |
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164 if self.state != potr.context.STATE_PLAINTEXT: |
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165 super(Context, self).disconnect() |
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166 |
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167 def finish(self): |
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168 """Finish the session - avoid to send any message but the user still has to end the session himself.""" |
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169 if self.state == potr.context.STATE_ENCRYPTED: |
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170 self.processTLVs([potr.proto.DisconnectTLV()]) |
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171 |
| 1055 | 172 |
| 173 class Account(potr.context.Account): | |
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174 # TODO: manage trusted keys: if a fingerprint is not used anymore, we have no way to remove it from database yet (same thing for a correspondent jid) |
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175 # TODO: manage explicit message encryption |
| 1055 | 176 |
| 1095 | 177 def __init__(self, host, client): |
| 178 log.debug(u"new account: %s" % client.jid) | |
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179 if not client.jid.resource: |
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180 log.warning("Account created without resource") |
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181 super(Account, self).__init__(unicode(client.jid), "xmpp", 1024) |
| 1095 | 182 self.host = host |
| 183 self.client = client | |
| 1055 | 184 |
| 185 def loadPrivkey(self): | |
| 1095 | 186 log.debug(u"loadPrivkey") |
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187 return self.privkey |
| 1055 | 188 |
| 189 def savePrivkey(self): | |
| 1095 | 190 log.debug(u"savePrivkey") |
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191 if self.privkey is None: |
| 2125 | 192 raise exceptions.InternalError(_(u"Save is called but privkey is None !")) |
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193 priv_key = self.privkey.serializePrivateKey().encode("hex") |
| 1095 | 194 d = self.host.memory.encryptValue(priv_key, self.client.profile) |
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195 |
| 1095 | 196 def save_encrypted_key(encrypted_priv_key): |
| 2128 | 197 self.client._otr_data[PRIVATE_KEY] = encrypted_priv_key |
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198 |
| 1095 | 199 d.addCallback(save_encrypted_key) |
| 1055 | 200 |
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201 def loadTrusts(self): |
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202 trust_data = self.client._otr_data.get("trust", {}) |
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203 for jid_, jid_data in trust_data.iteritems(): |
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204 for fingerprint, trust_level in jid_data.iteritems(): |
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205 log.debug( |
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206 u'setting trust for {jid}: [{fingerprint}] = "{trust_level}"'.format( |
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207 jid=jid_, fingerprint=fingerprint, trust_level=trust_level |
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208 ) |
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209 ) |
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210 self.trusts.setdefault(jid.JID(jid_), {})[fingerprint] = trust_level |
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211 |
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212 def saveTrusts(self): |
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213 log.debug(u"saving trusts for {profile}".format(profile=self.client.profile)) |
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214 log.debug(u"trusts = {}".format(self.client._otr_data["trust"])) |
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215 self.client._otr_data.force("trust") |
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216 |
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217 def setTrust(self, other_jid, fingerprint, trustLevel): |
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218 try: |
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219 trust_data = self.client._otr_data["trust"] |
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220 except KeyError: |
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221 trust_data = {} |
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222 self.client._otr_data["trust"] = trust_data |
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223 jid_data = trust_data.setdefault(other_jid.full(), {}) |
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224 jid_data[fingerprint] = trustLevel |
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225 super(Account, self).setTrust(other_jid, fingerprint, trustLevel) |
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226 |
| 1055 | 227 |
| 228 class ContextManager(object): | |
| 229 def __init__(self, host, client): | |
| 230 self.host = host | |
| 1095 | 231 self.account = Account(host, client) |
| 1055 | 232 self.contexts = {} |
| 233 | |
| 1095 | 234 def startContext(self, other_jid): |
| 235 assert isinstance(other_jid, jid.JID) | |
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236 context = self.contexts.setdefault( |
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237 other_jid, Context(self.host, self.account, other_jid) |
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238 ) |
| 1095 | 239 return context |
| 1055 | 240 |
| 241 def getContextForUser(self, other): | |
| 1095 | 242 log.debug(u"getContextForUser [%s]" % other) |
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243 if not other.resource: |
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244 log.warning(u"getContextForUser called with a bare jid: %s" % other.full()) |
| 1055 | 245 return self.startContext(other) |
| 246 | |
| 247 | |
| 248 class OTR(object): | |
| 249 def __init__(self, host): | |
| 1095 | 250 log.info(_(u"OTR plugin initialization")) |
| 1055 | 251 self.host = host |
| 252 self.context_managers = {} | |
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253 self.skipped_profiles = ( |
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254 set() |
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255 ) # FIXME: OTR should not be skipped per profile, this need to be refactored |
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256 self._p_hints = host.plugins[u"XEP-0334"] |
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257 self._p_carbons = host.plugins[u"XEP-0280"] |
| 1055 | 258 host.trigger.add("MessageReceived", self.MessageReceivedTrigger, priority=100000) |
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259 host.trigger.add("sendMessage", self.sendMessageTrigger, priority=100000) |
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260 host.trigger.add("sendMessageData", self._sendMessageDataTrigger) |
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261 host.bridge.addMethod( |
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262 "skipOTR", ".plugin", in_sign="s", out_sign="", method=self._skipOTR |
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263 ) # FIXME: must be removed, must be done on per-message basis |
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264 host.bridge.addSignal( |
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265 "otrState", ".plugin", signature="sss" |
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266 ) # args: state, destinee_jid, profile |
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267 host.importMenu( |
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268 (OTR_MENU, D_(u"Start/Refresh")), |
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269 self._otrStartRefresh, |
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270 security_limit=0, |
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271 help_string=D_(u"Start or refresh an OTR session"), |
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272 type_=C.MENU_SINGLE, |
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273 ) |
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274 host.importMenu( |
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275 (OTR_MENU, D_(u"End session")), |
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276 self._otrSessionEnd, |
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277 security_limit=0, |
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278 help_string=D_(u"Finish an OTR session"), |
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279 type_=C.MENU_SINGLE, |
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280 ) |
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281 host.importMenu( |
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282 (OTR_MENU, D_(u"Authenticate")), |
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283 self._otrAuthenticate, |
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284 security_limit=0, |
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285 help_string=D_(u"Authenticate user/see your fingerprint"), |
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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"Drop private key")), |
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290 self._dropPrivKey, |
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291 security_limit=0, |
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292 type_=C.MENU_SINGLE, |
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293 ) |
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294 host.trigger.add("presenceReceived", self._presenceReceivedTrigger) |
| 1055 | 295 |
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296 def _skipOTR(self, profile): |
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297 """Tell the backend to not handle OTR for this profile. |
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298 |
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299 @param profile (str): %(doc_profile)s |
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300 """ |
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301 # FIXME: should not be done per profile but per message, using extra data |
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302 # for message received, profile wide hook may be need, but client |
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303 # should be used anyway instead of a class attribute |
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304 self.skipped_profiles.add(profile) |
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305 |
| 1095 | 306 @defer.inlineCallbacks |
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307 def profileConnected(self, client): |
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308 if client.profile in self.skipped_profiles: |
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309 return |
| 2128 | 310 ctxMng = client._otr_context_manager = ContextManager(self.host, client) |
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311 client._otr_data = persistent.PersistentBinaryDict(NS_OTR, client.profile) |
| 2128 | 312 yield client._otr_data.load() |
| 313 encrypted_priv_key = client._otr_data.get(PRIVATE_KEY, None) | |
| 1095 | 314 if encrypted_priv_key is not None: |
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315 priv_key = yield self.host.memory.decryptValue( |
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316 encrypted_priv_key, client.profile |
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317 ) |
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318 ctxMng.account.privkey = potr.crypt.PK.parsePrivateKey( |
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319 priv_key.decode("hex") |
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320 )[0] |
| 1095 | 321 else: |
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322 ctxMng.account.privkey = None |
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323 ctxMng.account.loadTrusts() |
| 1055 | 324 |
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325 def profileDisconnected(self, client): |
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326 if client.profile in self.skipped_profiles: |
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327 self.skipped_profiles.remove(client.profile) |
| 2128 | 328 return |
| 329 for context in client._otr_context_manager.contexts.values(): | |
| 330 context.disconnect() | |
| 331 del client._otr_context_manager | |
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332 |
| 2125 | 333 def _otrStartRefresh(self, menu_data, profile): |
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334 """Start or refresh an OTR session |
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335 |
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336 @param menu_data: %(menu_data)s |
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337 @param profile: %(doc_profile)s |
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338 """ |
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339 client = self.host.getClient(profile) |
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340 try: |
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341 to_jid = jid.JID(menu_data["jid"]) |
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342 except KeyError: |
| 2125 | 343 log.error(_(u"jid key is not present !")) |
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344 return defer.fail(exceptions.DataError) |
| 2125 | 345 self.startRefresh(client, to_jid) |
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346 return {} |
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347 |
| 2125 | 348 def startRefresh(self, client, to_jid): |
| 349 """Start or refresh an OTR session | |
| 350 | |
| 351 @param to_jid(jid.JID): jid to start encrypted session with | |
| 352 """ | |
| 353 if not to_jid.resource: | |
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354 to_jid.resource = self.host.memory.getMainResource( |
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355 client, to_jid |
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356 ) # FIXME: temporary and unsecure, must be changed when frontends are refactored |
| 2128 | 357 otrctx = client._otr_context_manager.getContextForUser(to_jid) |
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358 query = otrctx.sendMessage(0, "?OTRv?") |
| 2125 | 359 otrctx.inject(query) |
| 360 | |
| 361 def _otrSessionEnd(self, menu_data, profile): | |
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362 """End an OTR session |
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363 |
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364 @param menu_data: %(menu_data)s |
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365 @param profile: %(doc_profile)s |
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366 """ |
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367 client = self.host.getClient(profile) |
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368 try: |
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369 to_jid = jid.JID(menu_data["jid"]) |
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370 except KeyError: |
| 2125 | 371 log.error(_(u"jid key is not present !")) |
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372 return defer.fail(exceptions.DataError) |
| 2125 | 373 self.endSession(client, to_jid) |
| 374 return {} | |
| 375 | |
| 376 def endSession(self, client, to_jid): | |
| 377 """End an OTR session""" | |
| 378 if not to_jid.resource: | |
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379 to_jid.resource = self.host.memory.getMainResource( |
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380 client, to_jid |
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381 ) # FIXME: temporary and unsecure, must be changed when frontends are refactored |
| 2128 | 382 otrctx = client._otr_context_manager.getContextForUser(to_jid) |
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383 otrctx.disconnect() |
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384 return {} |
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385 |
| 2125 | 386 def _otrAuthenticate(self, menu_data, profile): |
| 387 """End an OTR session | |
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388 |
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389 @param menu_data: %(menu_data)s |
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390 @param profile: %(doc_profile)s |
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391 """ |
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392 client = self.host.getClient(profile) |
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393 try: |
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394 to_jid = jid.JID(menu_data["jid"]) |
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395 except KeyError: |
| 2125 | 396 log.error(_(u"jid key is not present !")) |
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397 return defer.fail(exceptions.DataError) |
| 2125 | 398 return self.authenticate(client, to_jid) |
| 399 | |
| 400 def authenticate(self, client, to_jid): | |
| 401 """Authenticate other user and see our own fingerprint""" | |
| 402 if not to_jid.resource: | |
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403 to_jid.resource = self.host.memory.getMainResource( |
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404 client, to_jid |
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405 ) # FIXME: temporary and unsecure, must be changed when frontends are refactored |
| 2128 | 406 ctxMng = client._otr_context_manager |
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407 otrctx = ctxMng.getContextForUser(to_jid) |
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408 priv_key = ctxMng.account.privkey |
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409 |
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410 if priv_key is None: |
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411 # we have no private key yet |
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412 dialog = xml_tools.XMLUI( |
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413 C.XMLUI_DIALOG, |
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414 dialog_opt={ |
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415 C.XMLUI_DATA_TYPE: C.XMLUI_DIALOG_MESSAGE, |
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416 C.XMLUI_DATA_MESS: _( |
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417 u"You have no private key yet, start an OTR conversation to have one" |
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418 ), |
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419 C.XMLUI_DATA_LVL: C.XMLUI_DATA_LVL_WARNING, |
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420 }, |
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421 title=_(u"No private key"), |
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422 ) |
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423 return {"xmlui": dialog.toXml()} |
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424 |
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425 other_fingerprint = otrctx.getCurrentKey() |
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426 |
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427 if other_fingerprint is None: |
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428 # we have a private key, but not the fingerprint of our correspondent |
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429 dialog = xml_tools.XMLUI( |
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430 C.XMLUI_DIALOG, |
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431 dialog_opt={ |
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432 C.XMLUI_DATA_TYPE: C.XMLUI_DIALOG_MESSAGE, |
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433 C.XMLUI_DATA_MESS: _( |
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434 u"Your fingerprint is:\n{fingerprint}\n\nStart an OTR conversation to have your correspondent one." |
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435 ).format(fingerprint=priv_key), |
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436 C.XMLUI_DATA_LVL: C.XMLUI_DATA_LVL_INFO, |
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437 }, |
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438 title=_(u"Fingerprint"), |
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439 ) |
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440 return {"xmlui": dialog.toXml()} |
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441 |
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442 def setTrust(raw_data, profile): |
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443 # This method is called when authentication form is submited |
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444 data = xml_tools.XMLUIResult2DataFormResult(raw_data) |
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445 if data["match"] == "yes": |
| 2128 | 446 otrctx.setCurrentTrust(OTR_STATE_TRUSTED) |
| 2125 | 447 note_msg = _(u"Your correspondent {correspondent} is now TRUSTED") |
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448 self.host.bridge.otrState( |
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449 OTR_STATE_TRUSTED, to_jid.full(), client.profile |
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450 ) |
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451 else: |
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452 otrctx.setCurrentTrust("") |
| 2125 | 453 note_msg = _(u"Your correspondent {correspondent} is now UNTRUSTED") |
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454 self.host.bridge.otrState( |
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455 OTR_STATE_UNTRUSTED, to_jid.full(), client.profile |
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456 ) |
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457 note = xml_tools.XMLUI( |
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458 C.XMLUI_DIALOG, |
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459 dialog_opt={ |
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460 C.XMLUI_DATA_TYPE: C.XMLUI_DIALOG_NOTE, |
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461 C.XMLUI_DATA_MESS: note_msg.format(correspondent=otrctx.peer), |
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462 }, |
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463 ) |
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464 return {"xmlui": note.toXml()} |
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465 |
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466 submit_id = self.host.registerCallback(setTrust, with_data=True, one_shot=True) |
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467 trusted = bool(otrctx.getCurrentTrust()) |
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468 |
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469 xmlui = xml_tools.XMLUI( |
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470 C.XMLUI_FORM, |
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471 title=_("Authentication (%s)") % to_jid.full(), |
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472 submit_id=submit_id, |
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473 ) |
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474 xmlui.addText(_(AUTH_TXT)) |
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475 xmlui.addDivider() |
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476 xmlui.addText( |
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477 D_(u"Your own fingerprint is:\n{fingerprint}").format(fingerprint=priv_key) |
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478 ) |
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479 xmlui.addText( |
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480 D_(u"Your correspondent fingerprint should be:\n{fingerprint}").format( |
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481 fingerprint=other_fingerprint |
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482 ) |
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483 ) |
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484 xmlui.addDivider("blank") |
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485 xmlui.changeContainer("pairs") |
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486 xmlui.addLabel(D_(u"Is your correspondent fingerprint the same as here ?")) |
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487 xmlui.addList( |
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488 "match", [("yes", _("yes")), ("no", _("no"))], ["yes" if trusted else "no"] |
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489 ) |
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490 return {"xmlui": xmlui.toXml()} |
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491 |
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492 def _dropPrivKey(self, menu_data, profile): |
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493 """Drop our private Key |
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494 |
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495 @param menu_data: %(menu_data)s |
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496 @param profile: %(doc_profile)s |
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497 """ |
|
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498 client = self.host.getClient(profile) |
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499 try: |
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500 to_jid = jid.JID(menu_data["jid"]) |
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501 if not to_jid.resource: |
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502 to_jid.resource = self.host.memory.getMainResource( |
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503 client, to_jid |
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504 ) # FIXME: temporary and unsecure, must be changed when frontends are refactored |
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505 except KeyError: |
| 2125 | 506 log.error(_(u"jid key is not present !")) |
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507 return defer.fail(exceptions.DataError) |
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508 |
| 2128 | 509 ctxMng = client._otr_context_manager |
|
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510 if ctxMng.account.privkey is None: |
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511 return { |
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512 "xmlui": xml_tools.note(_(u"You don't have a private key yet !")).toXml() |
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513 } |
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514 |
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515 def dropKey(data, profile): |
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516 if C.bool(data["answer"]): |
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517 # we end all sessions |
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518 for context in ctxMng.contexts.values(): |
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519 context.disconnect() |
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520 ctxMng.account.privkey = None |
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521 ctxMng.account.getPrivkey() # as account.privkey is None, getPrivkey will generate a new key, and save it |
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522 return { |
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523 "xmlui": xml_tools.note( |
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524 D_(u"Your private key has been dropped") |
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525 ).toXml() |
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526 } |
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527 return {} |
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528 |
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529 submit_id = self.host.registerCallback(dropKey, with_data=True, one_shot=True) |
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530 |
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531 confirm = xml_tools.XMLUI( |
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532 C.XMLUI_DIALOG, |
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533 title=_(u"Confirm private key drop"), |
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534 dialog_opt={"type": C.XMLUI_DIALOG_CONFIRM, "message": _(DROP_TXT)}, |
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535 submit_id=submit_id, |
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536 ) |
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537 return {"xmlui": confirm.toXml()} |
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538 |
| 2128 | 539 def _receivedTreatment(self, data, client): |
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540 from_jid = data["from"] |
| 1095 | 541 log.debug(u"_receivedTreatment [from_jid = %s]" % from_jid) |
| 2128 | 542 otrctx = client._otr_context_manager.getContextForUser(from_jid) |
| 1055 | 543 |
| 544 try: | |
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545 message = ( |
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546 data["message"].itervalues().next() |
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547 ) # FIXME: Q&D fix for message refactoring, message is now a dict |
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548 res = otrctx.receiveMessage(message.encode("utf-8")) |
| 1055 | 549 except potr.context.UnencryptedMessage: |
| 2128 | 550 encrypted = False |
| 1095 | 551 if otrctx.state == potr.context.STATE_ENCRYPTED: |
|
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552 log.warning( |
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553 u"Received unencrypted message in an encrypted context (from {jid})".format( |
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554 jid=from_jid.full() |
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555 ) |
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556 ) |
| 2125 | 557 |
|
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558 feedback = ( |
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559 D_( |
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560 u"WARNING: received unencrypted data in a supposedly encrypted context" |
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561 ), |
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562 ) |
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563 client.feedback(from_jid, feedback) |
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564 except StopIteration: |
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565 return data |
| 2128 | 566 else: |
| 567 encrypted = True | |
| 1055 | 568 |
| 2128 | 569 if encrypted: |
| 1055 | 570 if res[0] != None: |
| 571 # decrypted messages handling. | |
| 572 # receiveMessage() will return a tuple, the first part of which will be the decrypted message | |
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573 data["message"] = { |
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574 "": res[0].decode("utf-8") |
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575 } # FIXME: Q&D fix for message refactoring, message is now a dict |
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576 try: |
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577 # we want to keep message in history, even if no store is requested in message hints |
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578 del data[u"history"] |
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579 except KeyError: |
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580 pass |
| 2128 | 581 # TODO: add skip history as an option, but by default we don't skip it |
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582 # data[u'history'] = C.HISTORY_SKIP # we send the decrypted message to frontends, but we don't want it in history |
| 1055 | 583 else: |
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584 log.warning( |
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585 u"An encrypted message was expected, but got {}".format( |
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586 data["message"] |
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587 ) |
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588 ) |
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589 raise failure.Failure( |
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590 exceptions.CancelError("Cancelled by OTR") |
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591 ) # no message at all (no history, no signal) |
| 2128 | 592 return data |
| 1055 | 593 |
| 2128 | 594 def _receivedTreatmentForSkippedProfiles(self, data): |
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595 """This profile must be skipped because the frontend manages OTR itself, |
| 2128 | 596 |
| 597 but we still need to check if the message must be stored in history or not | |
| 598 """ | |
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599 # XXX: FIXME: this should not be done on a per-profile basis, but per-message |
|
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600 try: |
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601 message = ( |
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602 data["message"].itervalues().next().encode("utf-8") |
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603 ) # FIXME: Q&D fix for message refactoring, message is now a dict |
|
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604 except StopIteration: |
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605 return data |
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606 if message.startswith(potr.proto.OTRTAG): |
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607 # FIXME: it may be better to cancel the message and send it direclty to bridge |
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608 # this is used by Libervia, but this may send garbage message to other frontends |
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609 # if they are used at the same time as Libervia. |
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610 # Hard to avoid with decryption on Libervia though. |
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611 data[u"history"] = C.HISTORY_SKIP |
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612 return data |
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613 |
|
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614 def MessageReceivedTrigger(self, client, message_elt, post_treat): |
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615 if message_elt.getAttribute("type") == C.MESS_TYPE_GROUPCHAT: |
| 2128 | 616 # OTR is not possible in group chats |
| 617 return True | |
| 618 if client.profile in self.skipped_profiles: | |
| 619 post_treat.addCallback(self._receivedTreatmentForSkippedProfiles) | |
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620 else: |
| 2128 | 621 post_treat.addCallback(self._receivedTreatment, client) |
| 1055 | 622 return True |
| 623 | |
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624 def _sendMessageDataTrigger(self, client, mess_data): |
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625 if not "OTR" in mess_data: |
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626 return |
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627 otrctx = mess_data["OTR"] |
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628 message_elt = mess_data["xml"] |
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629 to_jid = mess_data["to"] |
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630 if otrctx.state == potr.context.STATE_ENCRYPTED: |
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631 log.debug(u"encrypting message") |
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632 body = None |
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633 for child in list(message_elt.children): |
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634 if child.name == "body": |
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635 # we remove all unencrypted body, |
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636 # and will only encrypt the first one |
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637 if body is None: |
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638 body = child |
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639 message_elt.children.remove(child) |
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640 elif child.name == "html": |
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641 # we don't want any XHTML-IM element |
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642 message_elt.children.remove(child) |
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643 if body is None: |
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644 log.warning(u"No message found") |
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645 else: |
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646 self._p_carbons.setPrivate(message_elt) |
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647 otrctx.sendMessage(0, unicode(body).encode("utf-8"), appdata=mess_data) |
| 1055 | 648 else: |
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649 feedback = D_( |
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650 u"Your message was not sent because your correspondent closed the encrypted conversation on his/her side. " |
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651 u"Either close your own side, or refresh the session." |
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652 ) |
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653 log.warning(_(u"Message discarded because closed encryption channel")) |
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654 client.feedback(to_jid, feedback) |
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655 raise failure.Failure(exceptions.CancelError(u"Cancelled by OTR plugin")) |
| 2128 | 656 |
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657 def sendMessageTrigger( |
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658 self, client, mess_data, pre_xml_treatments, post_xml_treatments |
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659 ): |
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660 if mess_data["type"] == "groupchat": |
| 1055 | 661 return True |
|
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662 if ( |
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663 client.profile in self.skipped_profiles |
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664 ): # FIXME: should not be done on a per-profile basis |
| 2128 | 665 return True |
|
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666 to_jid = copy.copy(mess_data["to"]) |
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667 if not to_jid.resource: |
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668 to_jid.resource = self.host.memory.getMainResource( |
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669 client, to_jid |
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670 ) # FIXME: full jid may not be known |
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671 otrctx = client._otr_context_manager.getContextForUser(to_jid) |
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672 if otrctx.state != potr.context.STATE_PLAINTEXT: |
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673 self._p_hints.addHint(mess_data, self._p_hints.HINT_NO_COPY) |
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674 self._p_hints.addHint(mess_data, self._p_hints.HINT_NO_PERMANENT_STORE) |
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675 mess_data[ |
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676 "OTR" |
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677 ] = ( |
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678 otrctx |
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679 ) # this indicate that encryption is needed in sendMessageData trigger |
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680 if not mess_data[ |
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681 "to" |
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682 ].resource: # if not resource was given, we force it here |
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683 mess_data["to"] = to_jid |
| 2128 | 684 return True |
| 1055 | 685 |
|
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686 def _presenceReceivedTrigger(self, entity, show, priority, statuses, profile): |
|
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687 if show != C.PRESENCE_UNAVAILABLE: |
|
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|
688 return True |
| 2128 | 689 client = self.host.getClient(profile) |
|
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|
690 if not entity.resource: |
|
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|
691 try: |
|
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692 entity.resource = self.host.memory.getMainResource( |
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56f94936df1e
code style reformatting using black
Goffi <goffi@goffi.org>
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2562
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693 client, entity |
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56f94936df1e
code style reformatting using black
Goffi <goffi@goffi.org>
parents:
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changeset
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694 ) # FIXME: temporary and unsecure, must be changed when frontends are refactored |
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plugin sec_otr: fixes bad handling of entity disconnection
souliane <souliane@mailoo.org>
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1480
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695 except exceptions.UnknownEntityError: |
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62cd8fc1aef7
plugin sec_otr: fixes bad handling of entity disconnection
souliane <souliane@mailoo.org>
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696 return True # entity was not connected |
| 2128 | 697 if entity in client._otr_context_manager.contexts: |
| 698 otrctx = client._otr_context_manager.getContextForUser(entity) | |
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plugin sec_otr: fixes bad handling of entity disconnection
souliane <souliane@mailoo.org>
parents:
1480
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changeset
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699 otrctx.disconnect() |
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2df6427a5299
plugin OTR: forces FINISHED state if we are in ENCRYPTED state on contact disconnection
souliane <souliane@mailoo.org>
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1169
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700 return True |