Mercurial > libervia-backend
annotate sat/plugins/plugin_sec_otr.py @ 2646:712cb4ff3e13
core: new EncryptionHandler class which manage encrypted session as a core feature:
Plugin handling encryption can now register using host.registerEncryptionPlugin, and an encryption session can now be started using messageEncryptionStart bridge method.
This will make encryption handling more easy, as we now know if a session is clear or e2e encrypted, and which plugin handle it.
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Sun, 29 Jul 2018 19:22:56 +0200 |
| parents | 189e38fb11ff |
| children | 7213caa5c5d0 |
| 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 | |
| 2128 | 52 NS_OTR = "otr_plugin" |
| 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 feedback = _(u"/!\\ conversation with %(other_jid)s is now UNENCRYPTED") % { |
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127 "other_jid": self.peer.full() |
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128 } |
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129 self.host.bridge.otrState( |
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130 OTR_STATE_UNENCRYPTED, self.peer.full(), client.profile |
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131 ) |
| 1095 | 132 elif state == potr.context.STATE_ENCRYPTED: |
| 133 try: | |
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134 trusted = self.getCurrentTrust() |
| 1095 | 135 except TypeError: |
| 136 trusted = False | |
| 137 trusted_str = _(u"trusted") if trusted else _(u"untrusted") | |
| 138 | |
| 139 if old_state == potr.context.STATE_ENCRYPTED: | |
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140 feedback = D_( |
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141 u"{trusted} OTR conversation with {other_jid} REFRESHED" |
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142 ).format(trusted=trusted_str, other_jid=self.peer.full()) |
| 1095 | 143 else: |
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144 feedback = D_( |
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145 u"{trusted} encrypted OTR conversation started with {other_jid}\n" |
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146 u"{extra_info}" |
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147 ).format( |
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148 trusted=trusted_str, |
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149 other_jid=self.peer.full(), |
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150 extra_info=NO_ADV_FEATURES, |
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151 ) |
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152 self.host.bridge.otrState( |
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153 OTR_STATE_ENCRYPTED, self.peer.full(), client.profile |
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154 ) |
| 1095 | 155 elif state == potr.context.STATE_FINISHED: |
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156 feedback = D_(u"OTR conversation with {other_jid} is FINISHED").format( |
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157 other_jid=self.peer.full() |
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158 ) |
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159 self.host.bridge.otrState( |
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160 OTR_STATE_UNENCRYPTED, self.peer.full(), client.profile |
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161 ) |
| 1095 | 162 else: |
| 2125 | 163 log.error(D_(u"Unknown OTR state")) |
| 1095 | 164 return |
| 165 | |
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166 client.feedback(self.peer, feedback) |
| 1055 | 167 |
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168 def disconnect(self): |
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169 """Disconnect the session.""" |
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170 if self.state != potr.context.STATE_PLAINTEXT: |
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171 super(Context, self).disconnect() |
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172 |
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173 def finish(self): |
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174 """Finish the session |
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175 |
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176 avoid to send any message but the user still has to end the session himself. |
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177 """ |
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178 if self.state == potr.context.STATE_ENCRYPTED: |
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179 self.processTLVs([potr.proto.DisconnectTLV()]) |
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180 |
| 1055 | 181 |
| 182 class Account(potr.context.Account): | |
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183 # TODO: manage trusted keys: if a fingerprint is not used anymore, |
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184 # we have no way to remove it from database yet (same thing for a |
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185 # correspondent jid) |
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186 # TODO: manage explicit message encryption |
| 1055 | 187 |
| 1095 | 188 def __init__(self, host, client): |
| 189 log.debug(u"new account: %s" % client.jid) | |
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190 if not client.jid.resource: |
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191 log.warning("Account created without resource") |
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192 super(Account, self).__init__(unicode(client.jid), "xmpp", 1024) |
| 1095 | 193 self.host = host |
| 194 self.client = client | |
| 1055 | 195 |
| 196 def loadPrivkey(self): | |
| 1095 | 197 log.debug(u"loadPrivkey") |
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198 return self.privkey |
| 1055 | 199 |
| 200 def savePrivkey(self): | |
| 1095 | 201 log.debug(u"savePrivkey") |
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202 if self.privkey is None: |
| 2125 | 203 raise exceptions.InternalError(_(u"Save is called but privkey is None !")) |
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204 priv_key = self.privkey.serializePrivateKey().encode("hex") |
| 1095 | 205 d = self.host.memory.encryptValue(priv_key, self.client.profile) |
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206 |
| 1095 | 207 def save_encrypted_key(encrypted_priv_key): |
| 2128 | 208 self.client._otr_data[PRIVATE_KEY] = encrypted_priv_key |
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209 |
| 1095 | 210 d.addCallback(save_encrypted_key) |
| 1055 | 211 |
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212 def loadTrusts(self): |
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213 trust_data = self.client._otr_data.get("trust", {}) |
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214 for jid_, jid_data in trust_data.iteritems(): |
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215 for fingerprint, trust_level in jid_data.iteritems(): |
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216 log.debug( |
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217 u'setting trust for {jid}: [{fingerprint}] = "{trust_level}"'.format( |
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218 jid=jid_, fingerprint=fingerprint, trust_level=trust_level |
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219 ) |
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220 ) |
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221 self.trusts.setdefault(jid.JID(jid_), {})[fingerprint] = trust_level |
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222 |
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223 def saveTrusts(self): |
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224 log.debug(u"saving trusts for {profile}".format(profile=self.client.profile)) |
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225 log.debug(u"trusts = {}".format(self.client._otr_data["trust"])) |
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226 self.client._otr_data.force("trust") |
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227 |
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228 def setTrust(self, other_jid, fingerprint, trustLevel): |
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229 try: |
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230 trust_data = self.client._otr_data["trust"] |
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231 except KeyError: |
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232 trust_data = {} |
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233 self.client._otr_data["trust"] = trust_data |
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234 jid_data = trust_data.setdefault(other_jid.full(), {}) |
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235 jid_data[fingerprint] = trustLevel |
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236 super(Account, self).setTrust(other_jid, fingerprint, trustLevel) |
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237 |
| 1055 | 238 |
| 239 class ContextManager(object): | |
| 240 def __init__(self, host, client): | |
| 241 self.host = host | |
| 1095 | 242 self.account = Account(host, client) |
| 1055 | 243 self.contexts = {} |
| 244 | |
| 1095 | 245 def startContext(self, other_jid): |
| 246 assert isinstance(other_jid, jid.JID) | |
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247 context = self.contexts.setdefault( |
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248 other_jid, Context(self.host, self.account, other_jid) |
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249 ) |
| 1095 | 250 return context |
| 1055 | 251 |
| 252 def getContextForUser(self, other): | |
| 1095 | 253 log.debug(u"getContextForUser [%s]" % other) |
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254 if not other.resource: |
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255 log.warning(u"getContextForUser called with a bare jid: %s" % other.full()) |
| 1055 | 256 return self.startContext(other) |
| 257 | |
| 258 | |
| 259 class OTR(object): | |
| 260 def __init__(self, host): | |
| 1095 | 261 log.info(_(u"OTR plugin initialization")) |
| 1055 | 262 self.host = host |
| 263 self.context_managers = {} | |
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264 self.skipped_profiles = ( |
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265 set() |
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266 ) # FIXME: OTR should not be skipped per profile, this need to be refactored |
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267 self._p_hints = host.plugins[u"XEP-0334"] |
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268 self._p_carbons = host.plugins[u"XEP-0280"] |
| 1055 | 269 host.trigger.add("MessageReceived", self.MessageReceivedTrigger, priority=100000) |
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270 host.trigger.add("sendMessage", self.sendMessageTrigger, priority=100000) |
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271 host.trigger.add("sendMessageData", self._sendMessageDataTrigger) |
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272 host.bridge.addMethod( |
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273 "skipOTR", ".plugin", in_sign="s", out_sign="", method=self._skipOTR |
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274 ) # FIXME: must be removed, must be done on per-message basis |
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275 host.bridge.addSignal( |
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276 "otrState", ".plugin", signature="sss" |
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277 ) # args: state, destinee_jid, profile |
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278 host.importMenu( |
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279 (OTR_MENU, D_(u"Start/Refresh")), |
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280 self._otrStartRefresh, |
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281 security_limit=0, |
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282 help_string=D_(u"Start or refresh an OTR session"), |
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283 type_=C.MENU_SINGLE, |
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284 ) |
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285 host.importMenu( |
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286 (OTR_MENU, D_(u"End session")), |
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287 self._otrSessionEnd, |
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288 security_limit=0, |
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289 help_string=D_(u"Finish an OTR session"), |
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290 type_=C.MENU_SINGLE, |
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291 ) |
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292 host.importMenu( |
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293 (OTR_MENU, D_(u"Authenticate")), |
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294 self._otrAuthenticate, |
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295 security_limit=0, |
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296 help_string=D_(u"Authenticate user/see your fingerprint"), |
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297 type_=C.MENU_SINGLE, |
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298 ) |
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299 host.importMenu( |
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300 (OTR_MENU, D_(u"Drop private key")), |
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301 self._dropPrivKey, |
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302 security_limit=0, |
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303 type_=C.MENU_SINGLE, |
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304 ) |
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305 host.trigger.add("presenceReceived", self._presenceReceivedTrigger) |
| 1055 | 306 |
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307 def _skipOTR(self, profile): |
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308 """Tell the backend to not handle OTR for this profile. |
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309 |
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310 @param profile (str): %(doc_profile)s |
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311 """ |
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312 # FIXME: should not be done per profile but per message, using extra data |
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313 # for message received, profile wide hook may be need, but client |
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314 # should be used anyway instead of a class attribute |
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315 self.skipped_profiles.add(profile) |
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316 |
| 1095 | 317 @defer.inlineCallbacks |
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318 def profileConnected(self, client): |
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319 if client.profile in self.skipped_profiles: |
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320 return |
| 2128 | 321 ctxMng = client._otr_context_manager = ContextManager(self.host, client) |
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322 client._otr_data = persistent.PersistentBinaryDict(NS_OTR, client.profile) |
| 2128 | 323 yield client._otr_data.load() |
| 324 encrypted_priv_key = client._otr_data.get(PRIVATE_KEY, None) | |
| 1095 | 325 if encrypted_priv_key is not None: |
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326 priv_key = yield self.host.memory.decryptValue( |
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327 encrypted_priv_key, client.profile |
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328 ) |
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329 ctxMng.account.privkey = potr.crypt.PK.parsePrivateKey( |
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330 priv_key.decode("hex") |
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331 )[0] |
| 1095 | 332 else: |
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333 ctxMng.account.privkey = None |
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334 ctxMng.account.loadTrusts() |
| 1055 | 335 |
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336 def profileDisconnected(self, client): |
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337 if client.profile in self.skipped_profiles: |
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338 self.skipped_profiles.remove(client.profile) |
| 2128 | 339 return |
| 340 for context in client._otr_context_manager.contexts.values(): | |
| 341 context.disconnect() | |
| 342 del client._otr_context_manager | |
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343 |
| 2125 | 344 def _otrStartRefresh(self, menu_data, profile): |
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345 """Start or refresh an OTR session |
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346 |
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347 @param menu_data: %(menu_data)s |
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348 @param profile: %(doc_profile)s |
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349 """ |
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350 client = self.host.getClient(profile) |
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351 try: |
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352 to_jid = jid.JID(menu_data["jid"]) |
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353 except KeyError: |
| 2125 | 354 log.error(_(u"jid key is not present !")) |
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355 return defer.fail(exceptions.DataError) |
| 2125 | 356 self.startRefresh(client, to_jid) |
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357 return {} |
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358 |
| 2125 | 359 def startRefresh(self, client, to_jid): |
| 360 """Start or refresh an OTR session | |
| 361 | |
| 362 @param to_jid(jid.JID): jid to start encrypted session with | |
| 363 """ | |
| 364 if not to_jid.resource: | |
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365 to_jid.resource = self.host.memory.getMainResource( |
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366 client, to_jid |
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367 ) # FIXME: temporary and unsecure, must be changed when frontends |
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368 # are refactored |
| 2128 | 369 otrctx = client._otr_context_manager.getContextForUser(to_jid) |
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370 query = otrctx.sendMessage(0, "?OTRv?") |
| 2125 | 371 otrctx.inject(query) |
| 372 | |
| 373 def _otrSessionEnd(self, menu_data, profile): | |
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374 """End an OTR session |
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375 |
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376 @param menu_data: %(menu_data)s |
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377 @param profile: %(doc_profile)s |
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378 """ |
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379 client = self.host.getClient(profile) |
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380 try: |
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381 to_jid = jid.JID(menu_data["jid"]) |
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382 except KeyError: |
| 2125 | 383 log.error(_(u"jid key is not present !")) |
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384 return defer.fail(exceptions.DataError) |
| 2125 | 385 self.endSession(client, to_jid) |
| 386 return {} | |
| 387 | |
| 388 def endSession(self, client, to_jid): | |
| 389 """End an OTR session""" | |
| 390 if not to_jid.resource: | |
|
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391 to_jid.resource = self.host.memory.getMainResource( |
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392 client, to_jid |
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393 ) # FIXME: temporary and unsecure, must be changed when frontends |
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394 # are refactored |
| 2128 | 395 otrctx = client._otr_context_manager.getContextForUser(to_jid) |
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396 otrctx.disconnect() |
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397 return {} |
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398 |
| 2125 | 399 def _otrAuthenticate(self, menu_data, profile): |
| 400 """End an OTR session | |
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401 |
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402 @param menu_data: %(menu_data)s |
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403 @param profile: %(doc_profile)s |
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404 """ |
|
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405 client = self.host.getClient(profile) |
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406 try: |
|
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407 to_jid = jid.JID(menu_data["jid"]) |
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408 except KeyError: |
| 2125 | 409 log.error(_(u"jid key is not present !")) |
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410 return defer.fail(exceptions.DataError) |
| 2125 | 411 return self.authenticate(client, to_jid) |
| 412 | |
| 413 def authenticate(self, client, to_jid): | |
| 414 """Authenticate other user and see our own fingerprint""" | |
| 415 if not to_jid.resource: | |
|
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416 to_jid.resource = self.host.memory.getMainResource( |
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417 client, to_jid |
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418 ) # FIXME: temporary and unsecure, must be changed when frontends |
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419 # are refactored |
| 2128 | 420 ctxMng = client._otr_context_manager |
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421 otrctx = ctxMng.getContextForUser(to_jid) |
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422 priv_key = ctxMng.account.privkey |
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423 |
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424 if priv_key is None: |
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425 # we have no private key yet |
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426 dialog = xml_tools.XMLUI( |
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427 C.XMLUI_DIALOG, |
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428 dialog_opt={ |
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429 C.XMLUI_DATA_TYPE: C.XMLUI_DIALOG_MESSAGE, |
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430 C.XMLUI_DATA_MESS: _( |
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431 u"You have no private key yet, start an OTR conversation to " |
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432 u"have one" |
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433 ), |
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434 C.XMLUI_DATA_LVL: C.XMLUI_DATA_LVL_WARNING, |
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435 }, |
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436 title=_(u"No private key"), |
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437 ) |
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438 return {"xmlui": dialog.toXml()} |
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439 |
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440 other_fingerprint = otrctx.getCurrentKey() |
|
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441 |
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442 if other_fingerprint is None: |
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443 # we have a private key, but not the fingerprint of our correspondent |
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444 dialog = xml_tools.XMLUI( |
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445 C.XMLUI_DIALOG, |
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446 dialog_opt={ |
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447 C.XMLUI_DATA_TYPE: C.XMLUI_DIALOG_MESSAGE, |
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448 C.XMLUI_DATA_MESS: _( |
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449 u"Your fingerprint is:\n{fingerprint}\n\n" |
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450 u"Start an OTR conversation to have your correspondent one." |
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451 ).format(fingerprint=priv_key), |
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452 C.XMLUI_DATA_LVL: C.XMLUI_DATA_LVL_INFO, |
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453 }, |
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454 title=_(u"Fingerprint"), |
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455 ) |
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456 return {"xmlui": dialog.toXml()} |
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457 |
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458 def setTrust(raw_data, profile): |
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459 # This method is called when authentication form is submited |
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460 data = xml_tools.XMLUIResult2DataFormResult(raw_data) |
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461 if data["match"] == "yes": |
| 2128 | 462 otrctx.setCurrentTrust(OTR_STATE_TRUSTED) |
| 2125 | 463 note_msg = _(u"Your correspondent {correspondent} is now TRUSTED") |
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464 self.host.bridge.otrState( |
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465 OTR_STATE_TRUSTED, to_jid.full(), client.profile |
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466 ) |
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467 else: |
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468 otrctx.setCurrentTrust("") |
| 2125 | 469 note_msg = _(u"Your correspondent {correspondent} is now UNTRUSTED") |
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470 self.host.bridge.otrState( |
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471 OTR_STATE_UNTRUSTED, to_jid.full(), client.profile |
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472 ) |
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473 note = xml_tools.XMLUI( |
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474 C.XMLUI_DIALOG, |
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475 dialog_opt={ |
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476 C.XMLUI_DATA_TYPE: C.XMLUI_DIALOG_NOTE, |
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477 C.XMLUI_DATA_MESS: note_msg.format(correspondent=otrctx.peer), |
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478 }, |
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479 ) |
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480 return {"xmlui": note.toXml()} |
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481 |
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482 submit_id = self.host.registerCallback(setTrust, with_data=True, one_shot=True) |
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483 trusted = bool(otrctx.getCurrentTrust()) |
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484 |
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485 xmlui = xml_tools.XMLUI( |
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486 C.XMLUI_FORM, |
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487 title=_("Authentication (%s)") % to_jid.full(), |
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488 submit_id=submit_id, |
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489 ) |
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490 xmlui.addText(_(AUTH_TXT)) |
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491 xmlui.addDivider() |
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492 xmlui.addText( |
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493 D_(u"Your own fingerprint is:\n{fingerprint}").format(fingerprint=priv_key) |
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494 ) |
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495 xmlui.addText( |
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496 D_(u"Your correspondent fingerprint should be:\n{fingerprint}").format( |
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497 fingerprint=other_fingerprint |
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498 ) |
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499 ) |
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500 xmlui.addDivider("blank") |
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501 xmlui.changeContainer("pairs") |
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502 xmlui.addLabel(D_(u"Is your correspondent fingerprint the same as here ?")) |
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503 xmlui.addList( |
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504 "match", [("yes", _("yes")), ("no", _("no"))], ["yes" if trusted else "no"] |
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505 ) |
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506 return {"xmlui": xmlui.toXml()} |
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507 |
|
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508 def _dropPrivKey(self, menu_data, profile): |
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509 """Drop our private Key |
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510 |
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511 @param menu_data: %(menu_data)s |
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512 @param profile: %(doc_profile)s |
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513 """ |
|
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514 client = self.host.getClient(profile) |
|
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515 try: |
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516 to_jid = jid.JID(menu_data["jid"]) |
|
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517 if not to_jid.resource: |
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518 to_jid.resource = self.host.memory.getMainResource( |
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519 client, to_jid |
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520 ) # FIXME: temporary and unsecure, must be changed when frontends |
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521 # are refactored |
|
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522 except KeyError: |
| 2125 | 523 log.error(_(u"jid key is not present !")) |
|
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524 return defer.fail(exceptions.DataError) |
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525 |
| 2128 | 526 ctxMng = client._otr_context_manager |
|
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527 if ctxMng.account.privkey is None: |
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528 return { |
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529 "xmlui": xml_tools.note(_(u"You don't have a private key yet !")).toXml() |
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530 } |
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531 |
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|
532 def dropKey(data, profile): |
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533 if C.bool(data["answer"]): |
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534 # we end all sessions |
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535 for context in ctxMng.contexts.values(): |
|
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536 context.disconnect() |
|
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537 ctxMng.account.privkey = None |
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538 ctxMng.account.getPrivkey() # as account.privkey is None, getPrivkey |
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539 # will generate a new key, and save it |
|
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540 return { |
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541 "xmlui": xml_tools.note( |
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542 D_(u"Your private key has been dropped") |
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543 ).toXml() |
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544 } |
|
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545 return {} |
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|
546 |
|
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|
547 submit_id = self.host.registerCallback(dropKey, with_data=True, one_shot=True) |
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548 |
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549 confirm = xml_tools.XMLUI( |
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550 C.XMLUI_DIALOG, |
|
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|
551 title=_(u"Confirm private key drop"), |
|
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|
552 dialog_opt={"type": C.XMLUI_DIALOG_CONFIRM, "message": _(DROP_TXT)}, |
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|
553 submit_id=submit_id, |
|
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554 ) |
|
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555 return {"xmlui": confirm.toXml()} |
|
1144
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plugin OTR: added ability to drop private key
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556 |
| 2128 | 557 def _receivedTreatment(self, data, client): |
|
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558 from_jid = data["from"] |
| 1095 | 559 log.debug(u"_receivedTreatment [from_jid = %s]" % from_jid) |
| 2128 | 560 otrctx = client._otr_context_manager.getContextForUser(from_jid) |
| 1055 | 561 |
| 562 try: | |
|
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563 message = ( |
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564 data["message"].itervalues().next() |
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565 ) # FIXME: Q&D fix for message refactoring, message is now a dict |
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566 res = otrctx.receiveMessage(message.encode("utf-8")) |
| 1055 | 567 except potr.context.UnencryptedMessage: |
| 2128 | 568 encrypted = False |
| 1095 | 569 if otrctx.state == potr.context.STATE_ENCRYPTED: |
|
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570 log.warning( |
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571 u"Received unencrypted message in an encrypted context (from {jid})" |
|
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572 .format(jid=from_jid.full()) |
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573 ) |
| 2125 | 574 |
|
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575 feedback = ( |
|
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|
576 D_( |
|
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577 u"WARNING: received unencrypted data in a supposedly encrypted " |
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578 u"context" |
|
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579 ), |
|
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580 ) |
|
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|
581 client.feedback(from_jid, feedback) |
|
1955
633b5c21aefd
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|
582 except StopIteration: |
|
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|
583 return data |
| 2128 | 584 else: |
| 585 encrypted = True | |
| 1055 | 586 |
| 2128 | 587 if encrypted: |
| 1055 | 588 if res[0] != None: |
| 589 # decrypted messages handling. | |
|
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|
590 # receiveMessage() will return a tuple, |
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591 # the first part of which will be the decrypted message |
|
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592 data["message"] = { |
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593 "": res[0].decode("utf-8") |
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594 } # FIXME: Q&D fix for message refactoring, message is now a dict |
|
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core: replaced SkipHistory exception by a key in mess_data:
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595 try: |
|
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|
596 # we want to keep message in history, even if no store is |
|
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597 # requested in message hints |
|
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598 del data[u"history"] |
|
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core: replaced SkipHistory exception by a key in mess_data:
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599 except KeyError: |
|
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|
600 pass |
| 2128 | 601 # TODO: add skip history as an option, but by default we don't skip it |
|
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602 # data[u'history'] = C.HISTORY_SKIP # we send the decrypted message to |
|
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|
603 # frontends, but we don't want it in |
|
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|
604 # history |
| 1055 | 605 else: |
|
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|
606 log.warning( |
|
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|
607 u"An encrypted message was expected, but got {}".format( |
|
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|
608 data["message"] |
|
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|
609 ) |
|
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|
610 ) |
|
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|
611 raise failure.Failure( |
|
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|
612 exceptions.CancelError("Cancelled by OTR") |
|
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|
613 ) # no message at all (no history, no signal) |
| 2128 | 614 return data |
| 1055 | 615 |
| 2128 | 616 def _receivedTreatmentForSkippedProfiles(self, data): |
|
1174
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|
617 """This profile must be skipped because the frontend manages OTR itself, |
| 2128 | 618 |
| 619 but we still need to check if the message must be stored in history or not | |
| 620 """ | |
|
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|
621 # XXX: FIXME: this should not be done on a per-profile basis, but per-message |
|
1955
633b5c21aefd
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changeset
|
622 try: |
|
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|
623 message = ( |
|
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|
624 data["message"].itervalues().next().encode("utf-8") |
|
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|
625 ) # FIXME: Q&D fix for message refactoring, message is now a dict |
|
1955
633b5c21aefd
backend, frontend: messages refactoring (huge commit, not finished):
Goffi <goffi@goffi.org>
parents:
1934
diff
changeset
|
626 except StopIteration: |
|
633b5c21aefd
backend, frontend: messages refactoring (huge commit, not finished):
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parents:
1934
diff
changeset
|
627 return data |
|
633b5c21aefd
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parents:
1934
diff
changeset
|
628 if message.startswith(potr.proto.OTRTAG): |
|
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diff
changeset
|
629 # FIXME: it may be better to cancel the message and send it direclty to |
|
189e38fb11ff
core: style improvments (90 chars limit)
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parents:
2624
diff
changeset
|
630 # bridge |
|
189e38fb11ff
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parents:
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diff
changeset
|
631 # this is used by Libervia, but this may send garbage message to |
|
189e38fb11ff
core: style improvments (90 chars limit)
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|
632 # other frontends |
|
2132
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parents:
2129
diff
changeset
|
633 # if they are used at the same time as Libervia. |
|
c0577837680a
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diff
changeset
|
634 # Hard to avoid with decryption on Libervia though. |
|
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|
635 data[u"history"] = C.HISTORY_SKIP |
|
1174
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1171
diff
changeset
|
636 return data |
|
bc811915a96a
plugin OTR: do not save in history the encrypted messages for skipped profiles
souliane <souliane@mailoo.org>
parents:
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diff
changeset
|
637 |
|
1963
a2bc5089c2eb
backend, frontends: message refactoring (huge commit):
Goffi <goffi@goffi.org>
parents:
1955
diff
changeset
|
638 def MessageReceivedTrigger(self, client, message_elt, post_treat): |
|
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|
639 if message_elt.getAttribute("type") == C.MESS_TYPE_GROUPCHAT: |
| 2128 | 640 # OTR is not possible in group chats |
| 641 return True | |
| 642 if client.profile in self.skipped_profiles: | |
| 643 post_treat.addCallback(self._receivedTreatmentForSkippedProfiles) | |
|
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souliane <souliane@mailoo.org>
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changeset
|
644 else: |
| 2128 | 645 post_treat.addCallback(self._receivedTreatment, client) |
| 1055 | 646 return True |
| 647 | |
|
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|
648 def _sendMessageDataTrigger(self, client, mess_data): |
|
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|
649 if not "OTR" in mess_data: |
|
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plugin OTR, core; use of new sendMessage + OTR mini refactoring:
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diff
changeset
|
650 return |
|
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|
651 otrctx = mess_data["OTR"] |
|
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|
652 message_elt = mess_data["xml"] |
|
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|
653 to_jid = mess_data["to"] |
|
2138
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plugin OTR, core; use of new sendMessage + OTR mini refactoring:
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parents:
2132
diff
changeset
|
654 if otrctx.state == potr.context.STATE_ENCRYPTED: |
|
6e509ee853a8
plugin OTR, core; use of new sendMessage + OTR mini refactoring:
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parents:
2132
diff
changeset
|
655 log.debug(u"encrypting message") |
|
6e509ee853a8
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2132
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changeset
|
656 body = None |
|
6e509ee853a8
plugin OTR, core; use of new sendMessage + OTR mini refactoring:
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changeset
|
657 for child in list(message_elt.children): |
|
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|
658 if child.name == "body": |
|
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parents:
2132
diff
changeset
|
659 # we remove all unencrypted body, |
|
6e509ee853a8
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parents:
2132
diff
changeset
|
660 # and will only encrypt the first one |
|
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parents:
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diff
changeset
|
661 if body is None: |
|
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parents:
2132
diff
changeset
|
662 body = child |
|
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diff
changeset
|
663 message_elt.children.remove(child) |
|
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|
664 elif child.name == "html": |
|
2138
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2132
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changeset
|
665 # we don't want any XHTML-IM element |
|
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parents:
2132
diff
changeset
|
666 message_elt.children.remove(child) |
|
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parents:
2132
diff
changeset
|
667 if body is None: |
|
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parents:
2132
diff
changeset
|
668 log.warning(u"No message found") |
|
1168
39572f9d5249
plugin OTR: fixes handling of the FINISHED state
souliane <souliane@mailoo.org>
parents:
1149
diff
changeset
|
669 else: |
|
2138
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2132
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changeset
|
670 self._p_carbons.setPrivate(message_elt) |
|
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|
671 otrctx.sendMessage(0, unicode(body).encode("utf-8"), appdata=mess_data) |
| 1055 | 672 else: |
|
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|
673 feedback = D_( |
|
2643
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changeset
|
674 u"Your message was not sent because your correspondent closed the " |
|
189e38fb11ff
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Goffi <goffi@goffi.org>
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changeset
|
675 u"encrypted conversation on his/her side. " |
|
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|
676 u"Either close your own side, or refresh the session." |
|
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|
677 ) |
|
2144
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2138
diff
changeset
|
678 log.warning(_(u"Message discarded because closed encryption channel")) |
|
1d3f73e065e1
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Goffi <goffi@goffi.org>
parents:
2138
diff
changeset
|
679 client.feedback(to_jid, feedback) |
|
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|
680 raise failure.Failure(exceptions.CancelError(u"Cancelled by OTR plugin")) |
| 2128 | 681 |
|
2643
189e38fb11ff
core: style improvments (90 chars limit)
Goffi <goffi@goffi.org>
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2624
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changeset
|
682 def sendMessageTrigger(self, client, mess_data, pre_xml_treatments, |
|
189e38fb11ff
core: style improvments (90 chars limit)
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parents:
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changeset
|
683 post_xml_treatments): |
|
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|
684 if mess_data["type"] == "groupchat": |
| 1055 | 685 return True |
|
2643
189e38fb11ff
core: style improvments (90 chars limit)
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parents:
2624
diff
changeset
|
686 |
|
189e38fb11ff
core: style improvments (90 chars limit)
Goffi <goffi@goffi.org>
parents:
2624
diff
changeset
|
687 if client.profile in self.skipped_profiles: |
|
189e38fb11ff
core: style improvments (90 chars limit)
Goffi <goffi@goffi.org>
parents:
2624
diff
changeset
|
688 # FIXME: should not be done on a per-profile basis |
| 2128 | 689 return True |
|
2643
189e38fb11ff
core: style improvments (90 chars limit)
Goffi <goffi@goffi.org>
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690 |
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691 to_jid = copy.copy(mess_data["to"]) |
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plugin OTR, core; use of new sendMessage + OTR mini refactoring:
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692 if not to_jid.resource: |
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693 to_jid.resource = self.host.memory.getMainResource( |
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694 client, to_jid |
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695 ) # FIXME: full jid may not be known |
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core: style improvments (90 chars limit)
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696 |
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plugin OTR, core; use of new sendMessage + OTR mini refactoring:
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parents:
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697 otrctx = client._otr_context_manager.getContextForUser(to_jid) |
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parents:
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698 |
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plugin OTR, core; use of new sendMessage + OTR mini refactoring:
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parents:
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699 if otrctx.state != potr.context.STATE_PLAINTEXT: |
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plugin OTR, core; use of new sendMessage + OTR mini refactoring:
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parents:
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700 self._p_hints.addHint(mess_data, self._p_hints.HINT_NO_COPY) |
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Goffi <goffi@goffi.org>
parents:
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701 self._p_hints.addHint(mess_data, self._p_hints.HINT_NO_PERMANENT_STORE) |
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parents:
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702 mess_data["OTR"] = (otrctx) # this indicate that encryption is needed in |
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parents:
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703 # sendMessageData trigger |
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704 if not mess_data["to"].resource: |
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parents:
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705 # if not resource was given, we force it here |
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706 mess_data["to"] = to_jid |
| 2128 | 707 return True |
| 1055 | 708 |
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core, plugin watched: new plugin, show an alert when a watched entity goes online
Goffi <goffi@goffi.org>
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709 def _presenceReceivedTrigger(self, entity, show, priority, statuses, profile): |
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core, plugin watched: new plugin, show an alert when a watched entity goes online
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710 if show != C.PRESENCE_UNAVAILABLE: |
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plugin sec_otr: a trigger was not returning True
souliane <souliane@mailoo.org>
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711 return True |
| 2128 | 712 client = self.host.getClient(profile) |
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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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713 if not entity.resource: |
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plugin sec_otr: fixes bad handling of entity disconnection
souliane <souliane@mailoo.org>
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714 try: |
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715 entity.resource = self.host.memory.getMainResource( |
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716 client, entity |
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parents:
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717 ) # FIXME: temporary and unsecure, must be changed when frontends |
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core: style improvments (90 chars limit)
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parents:
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718 # are refactored |
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plugin sec_otr: fixes bad handling of entity disconnection
souliane <souliane@mailoo.org>
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719 except exceptions.UnknownEntityError: |
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plugin sec_otr: fixes bad handling of entity disconnection
souliane <souliane@mailoo.org>
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720 return True # entity was not connected |
| 2128 | 721 if entity in client._otr_context_manager.contexts: |
| 722 otrctx = client._otr_context_manager.getContextForUser(entity) | |
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plugin sec_otr: fixes bad handling of entity disconnection
souliane <souliane@mailoo.org>
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723 otrctx.disconnect() |
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plugin OTR: forces FINISHED state if we are in ENCRYPTED state on contact disconnection
souliane <souliane@mailoo.org>
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724 return True |