Mercurial > libervia-backend
annotate libervia/backend/plugins/plugin_sec_otr.py @ 4177:0f1a4ffcd419
doc (cli/blog): Document new `--alt-link` option
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Tue, 05 Dec 2023 13:14:55 +0100 |
| parents | 4b842c1fb686 |
| children | 0d7bb4df2343 |
| rev | line source |
|---|---|
| 3028 | 1 #!/usr/bin/env python3 |
| 3137 | 2 |
| 1055 | 3 |
| 4 # SAT plugin for OTR encryption | |
| 3479 | 5 # Copyright (C) 2009-2021 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 | |
| 3028 | 24 import copy |
| 25 import time | |
| 26 import uuid | |
| 27 from binascii import hexlify, unhexlify | |
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28 from libervia.backend.core.i18n import _, D_ |
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29 from libervia.backend.core.constants import Const as C |
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30 from libervia.backend.core.log import getLogger |
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31 from libervia.backend.core import exceptions |
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32 from libervia.backend.tools import xml_tools |
| 1055 | 33 from twisted.words.protocols.jabber import jid |
| 34 from twisted.python import failure | |
| 1095 | 35 from twisted.internet import defer |
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36 from libervia.backend.memory import persistent |
| 1055 | 37 import potr |
| 3028 | 38 |
| 39 log = getLogger(__name__) | |
| 1095 | 40 |
| 2125 | 41 |
| 1055 | 42 PLUGIN_INFO = { |
| 3028 | 43 C.PI_NAME: "OTR", |
| 44 C.PI_IMPORT_NAME: "OTR", | |
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45 C.PI_MODES: [C.PLUG_MODE_CLIENT], |
| 3028 | 46 C.PI_TYPE: "SEC", |
| 47 C.PI_PROTOCOLS: ["XEP-0364"], | |
| 48 C.PI_DEPENDENCIES: ["XEP-0280", "XEP-0334"], | |
| 49 C.PI_MAIN: "OTR", | |
| 50 C.PI_HANDLER: "no", | |
| 51 C.PI_DESCRIPTION: _("""Implementation of OTR"""), | |
| 1055 | 52 } |
| 53 | |
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54 NS_OTR = "urn:xmpp:otr:0" |
| 2128 | 55 PRIVATE_KEY = "PRIVATE KEY" |
| 3028 | 56 OTR_MENU = D_("OTR") |
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57 AUTH_TXT = D_( |
| 3028 | 58 "To authenticate your correspondent, you need to give your below fingerprint " |
| 59 "*BY AN EXTERNAL CANAL* (i.e. not in this chat), and check that the one he gives " | |
| 60 "you is the same as below. If there is a mismatch, there can be a spy between you!" | |
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61 ) |
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62 DROP_TXT = D_( |
| 3028 | 63 "You private key is used to encrypt messages for your correspondent, nobody except " |
| 64 "you must know it, if you are in doubt, you should drop it!\n\nAre you sure you " | |
| 65 "want to drop your private key?" | |
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66 ) |
| 2128 | 67 # NO_LOG_AND = D_(u"/!\\Your history is not logged anymore, and") # FIXME: not used at the moment |
| 3028 | 68 NO_ADV_FEATURES = D_("Some of advanced features are disabled !") |
| 2128 | 69 |
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70 DEFAULT_POLICY_FLAGS = {"ALLOW_V1": False, "ALLOW_V2": True, "REQUIRE_ENCRYPTION": True} |
| 2128 | 71 |
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72 OTR_STATE_TRUSTED = "trusted" |
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73 OTR_STATE_UNTRUSTED = "untrusted" |
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74 OTR_STATE_UNENCRYPTED = "unencrypted" |
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75 OTR_STATE_ENCRYPTED = "encrypted" |
| 2128 | 76 |
| 1055 | 77 |
| 78 class Context(potr.context.Context): | |
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79 def __init__(self, context_manager, other_jid): |
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80 self.context_manager = context_manager |
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81 super(Context, self).__init__(context_manager.account, other_jid) |
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82 |
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83 @property |
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84 def host(self): |
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85 return self.context_manager.host |
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86 |
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87 @property |
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88 def _p_hints(self): |
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89 return self.context_manager.parent._p_hints |
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90 |
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91 @property |
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92 def _p_carbons(self): |
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93 return self.context_manager.parent._p_carbons |
| 1055 | 94 |
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95 def get_policy(self, key): |
| 1055 | 96 if key in DEFAULT_POLICY_FLAGS: |
| 97 return DEFAULT_POLICY_FLAGS[key] | |
| 98 else: | |
| 99 return False | |
| 100 | |
| 1095 | 101 def inject(self, msg_str, appdata=None): |
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102 """Inject encrypted data in the stream |
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103 |
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104 if appdata is not None, we are sending a message in sendMessageDataTrigger |
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105 stanza will be injected directly if appdata is None, |
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106 else we just update the element and follow normal workflow |
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107 @param msg_str(str): encrypted message body |
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108 @param appdata(None, dict): None for signal message, |
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109 message data when an encrypted message is going to be sent |
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110 """ |
| 1095 | 111 assert isinstance(self.peer, jid.JID) |
| 3040 | 112 msg = msg_str.decode('utf-8') |
| 1095 | 113 client = self.user.client |
| 3028 | 114 log.debug("injecting encrypted message to {to}".format(to=self.peer)) |
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115 if appdata is None: |
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116 mess_data = { |
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117 "from": client.jid, |
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118 "to": self.peer, |
| 3028 | 119 "uid": str(uuid.uuid4()), |
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120 "message": {"": msg}, |
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121 "subject": {}, |
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122 "type": "chat", |
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123 "extra": {}, |
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124 "timestamp": time.time(), |
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125 } |
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126 client.generate_message_xml(mess_data) |
| 3028 | 127 xml = mess_data['xml'] |
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128 self._p_carbons.set_private(xml) |
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129 self._p_hints.add_hint_elements(xml, [ |
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130 self._p_hints.HINT_NO_COPY, |
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131 self._p_hints.HINT_NO_PERMANENT_STORE]) |
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132 client.send(mess_data["xml"]) |
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133 else: |
| 3028 | 134 message_elt = appdata["xml"] |
| 135 assert message_elt.name == "message" | |
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136 message_elt.addElement("body", content=msg) |
| 1055 | 137 |
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138 def stop_cb(self, __, feedback): |
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139 client = self.user.client |
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140 self.host.bridge.otr_state( |
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141 OTR_STATE_UNENCRYPTED, self.peer.full(), client.profile |
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142 ) |
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143 client.feedback(self.peer, feedback) |
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144 |
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145 def stop_eb(self, failure_): |
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146 # encryption may be already stopped in case of manual stop |
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147 if not failure_.check(exceptions.NotFound): |
| 3028 | 148 log.error("Error while stopping OTR encryption: {msg}".format(msg=failure_)) |
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149 |
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150 def is_trusted(self): |
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151 # we have to check value because potr code says that a 2-tuples should be |
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152 # returned while in practice it's either None or u"trusted" |
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153 trusted = self.getCurrentTrust() |
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154 if trusted is None: |
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155 return False |
| 3028 | 156 elif trusted == 'trusted': |
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157 return True |
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158 else: |
| 3028 | 159 log.error("Unexpected getCurrentTrust() value: {value}".format( |
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160 value=trusted)) |
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161 return False |
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162 |
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163 def set_state(self, state): |
| 2128 | 164 client = self.user.client |
| 1095 | 165 old_state = self.state |
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166 super(Context, self).set_state(state) |
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167 log.debug("set_state: %s (old_state=%s)" % (state, old_state)) |
| 1095 | 168 |
| 169 if state == potr.context.STATE_PLAINTEXT: | |
| 3028 | 170 feedback = _("/!\\ conversation with %(other_jid)s is now UNENCRYPTED") % { |
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171 "other_jid": self.peer.full() |
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172 } |
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173 d = defer.ensureDeferred(client.encryption.stop(self.peer, NS_OTR)) |
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174 d.addCallback(self.stop_cb, feedback=feedback) |
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175 d.addErrback(self.stop_eb) |
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176 return |
| 1095 | 177 elif state == potr.context.STATE_ENCRYPTED: |
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178 defer.ensureDeferred(client.encryption.start(self.peer, NS_OTR)) |
| 1095 | 179 try: |
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180 trusted = self.is_trusted() |
| 1095 | 181 except TypeError: |
| 182 trusted = False | |
| 3028 | 183 trusted_str = _("trusted") if trusted else _("untrusted") |
| 1095 | 184 |
| 185 if old_state == potr.context.STATE_ENCRYPTED: | |
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186 feedback = D_( |
| 3028 | 187 "{trusted} OTR conversation with {other_jid} REFRESHED" |
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188 ).format(trusted=trusted_str, other_jid=self.peer.full()) |
| 1095 | 189 else: |
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190 feedback = D_( |
| 3028 | 191 "{trusted} encrypted OTR conversation started with {other_jid}\n" |
| 192 "{extra_info}" | |
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193 ).format( |
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194 trusted=trusted_str, |
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195 other_jid=self.peer.full(), |
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196 extra_info=NO_ADV_FEATURES, |
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197 ) |
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198 self.host.bridge.otr_state( |
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199 OTR_STATE_ENCRYPTED, self.peer.full(), client.profile |
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200 ) |
| 1095 | 201 elif state == potr.context.STATE_FINISHED: |
| 3028 | 202 feedback = D_("OTR conversation with {other_jid} is FINISHED").format( |
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203 other_jid=self.peer.full() |
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204 ) |
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205 d = defer.ensureDeferred(client.encryption.stop(self.peer, NS_OTR)) |
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206 d.addCallback(self.stop_cb, feedback=feedback) |
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207 d.addErrback(self.stop_eb) |
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208 return |
| 1095 | 209 else: |
| 3028 | 210 log.error(D_("Unknown OTR state")) |
| 1095 | 211 return |
| 212 | |
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213 client.feedback(self.peer, feedback) |
| 1055 | 214 |
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215 def disconnect(self): |
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216 """Disconnect the session.""" |
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217 if self.state != potr.context.STATE_PLAINTEXT: |
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218 super(Context, self).disconnect() |
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219 |
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220 def finish(self): |
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221 """Finish the session |
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222 |
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223 avoid to send any message but the user still has to end the session himself. |
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224 """ |
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225 if self.state == potr.context.STATE_ENCRYPTED: |
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226 self.processTLVs([potr.proto.DisconnectTLV()]) |
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227 |
| 1055 | 228 |
| 229 class Account(potr.context.Account): | |
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230 # TODO: manage trusted keys: if a fingerprint is not used anymore, |
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231 # we have no way to remove it from database yet (same thing for a |
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232 # correspondent jid) |
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233 # TODO: manage explicit message encryption |
| 1055 | 234 |
| 1095 | 235 def __init__(self, host, client): |
| 3028 | 236 log.debug("new account: %s" % client.jid) |
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237 if not client.jid.resource: |
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238 log.warning("Account created without resource") |
| 3028 | 239 super(Account, self).__init__(str(client.jid), "xmpp", 1024) |
| 1095 | 240 self.host = host |
| 241 self.client = client | |
| 1055 | 242 |
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243 def load_privkey(self): |
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244 log.debug("load_privkey") |
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245 return self.privkey |
| 1055 | 246 |
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247 def save_privkey(self): |
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248 log.debug("save_privkey") |
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249 if self.privkey is None: |
| 3028 | 250 raise exceptions.InternalError(_("Save is called but privkey is None !")) |
| 251 priv_key = hexlify(self.privkey.serializePrivateKey()) | |
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252 encrypted_priv_key = self.host.memory.encrypt_value(priv_key, self.client.profile) |
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253 self.client._otr_data[PRIVATE_KEY] = encrypted_priv_key |
| 1055 | 254 |
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255 def load_trusts(self): |
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256 trust_data = self.client._otr_data.get("trust", {}) |
| 3028 | 257 for jid_, jid_data in trust_data.items(): |
| 258 for fingerprint, trust_level in jid_data.items(): | |
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259 log.debug( |
| 3028 | 260 'setting trust for {jid}: [{fingerprint}] = "{trust_level}"'.format( |
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261 jid=jid_, fingerprint=fingerprint, trust_level=trust_level |
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262 ) |
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263 ) |
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264 self.trusts.setdefault(jid.JID(jid_), {})[fingerprint] = trust_level |
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265 |
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266 def save_trusts(self): |
| 3028 | 267 log.debug("saving trusts for {profile}".format(profile=self.client.profile)) |
| 268 log.debug("trusts = {}".format(self.client._otr_data["trust"])) | |
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269 self.client._otr_data.force("trust") |
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270 |
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271 def set_trust(self, other_jid, fingerprint, trustLevel): |
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272 try: |
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273 trust_data = self.client._otr_data["trust"] |
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274 except KeyError: |
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275 trust_data = {} |
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276 self.client._otr_data["trust"] = trust_data |
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277 jid_data = trust_data.setdefault(other_jid.full(), {}) |
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278 jid_data[fingerprint] = trustLevel |
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279 super(Account, self).set_trust(other_jid, fingerprint, trustLevel) |
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280 |
| 1055 | 281 |
| 282 class ContextManager(object): | |
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283 def __init__(self, parent, client): |
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284 self.parent = parent |
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285 self.account = Account(parent.host, client) |
| 1055 | 286 self.contexts = {} |
| 287 | |
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288 @property |
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289 def host(self): |
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290 return self.parent.host |
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291 |
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292 def start_context(self, other_jid): |
| 1095 | 293 assert isinstance(other_jid, jid.JID) |
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294 context = self.contexts.setdefault( |
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295 other_jid, Context(self, other_jid) |
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296 ) |
| 1095 | 297 return context |
| 1055 | 298 |
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299 def get_context_for_user(self, other): |
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300 log.debug("get_context_for_user [%s]" % other) |
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301 if not other.resource: |
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302 log.warning("get_context_for_user called with a bare jid: %s" % other.full()) |
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303 return self.start_context(other) |
| 1055 | 304 |
| 305 | |
| 306 class OTR(object): | |
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307 |
| 1055 | 308 def __init__(self, host): |
| 3028 | 309 log.info(_("OTR plugin initialization")) |
| 1055 | 310 self.host = host |
| 311 self.context_managers = {} | |
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312 self.skipped_profiles = ( |
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313 set() |
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314 ) # FIXME: OTR should not be skipped per profile, this need to be refactored |
| 3028 | 315 self._p_hints = host.plugins["XEP-0334"] |
| 316 self._p_carbons = host.plugins["XEP-0280"] | |
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317 host.trigger.add("message_received", self.message_received_trigger, priority=100000) |
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318 host.trigger.add("sendMessage", self.send_message_trigger, priority=100000) |
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319 host.trigger.add("send_message_data", self._send_message_data_trigger) |
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320 host.bridge.add_method( |
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321 "skip_otr", ".plugin", in_sign="s", out_sign="", method=self._skip_otr |
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322 ) # FIXME: must be removed, must be done on per-message basis |
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323 host.bridge.add_signal( |
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324 "otr_state", ".plugin", signature="sss" |
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325 ) # args: state, destinee_jid, profile |
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326 # XXX: menus are disabled in favor to the new more generic encryption menu |
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327 # there are let here commented for a little while as a reference |
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328 # host.import_menu( |
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329 # (OTR_MENU, D_(u"Start/Refresh")), |
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330 # self._otr_start_refresh, |
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331 # security_limit=0, |
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332 # help_string=D_(u"Start or refresh an OTR session"), |
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333 # type_=C.MENU_SINGLE, |
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334 # ) |
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335 # host.import_menu( |
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336 # (OTR_MENU, D_(u"End session")), |
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337 # self._otr_session_end, |
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338 # security_limit=0, |
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339 # help_string=D_(u"Finish an OTR session"), |
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340 # type_=C.MENU_SINGLE, |
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341 # ) |
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342 # host.import_menu( |
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343 # (OTR_MENU, D_(u"Authenticate")), |
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344 # self._otr_authenticate, |
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345 # security_limit=0, |
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346 # help_string=D_(u"Authenticate user/see your fingerprint"), |
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347 # type_=C.MENU_SINGLE, |
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348 # ) |
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349 # host.import_menu( |
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350 # (OTR_MENU, D_(u"Drop private key")), |
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351 # self._drop_priv_key, |
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352 # security_limit=0, |
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353 # type_=C.MENU_SINGLE, |
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354 # ) |
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355 host.trigger.add("presence_received", self._presence_received_trigger) |
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356 self.host.register_encryption_plugin(self, "OTR", NS_OTR, directed=True) |
| 1055 | 357 |
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358 def _skip_otr(self, profile): |
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359 """Tell the backend to not handle OTR for this profile. |
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360 |
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361 @param profile (str): %(doc_profile)s |
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362 """ |
|
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363 # FIXME: should not be done per profile but per message, using extra data |
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364 # for message received, profile wide hook may be need, but client |
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365 # should be used anyway instead of a class attribute |
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366 self.skipped_profiles.add(profile) |
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367 |
| 1095 | 368 @defer.inlineCallbacks |
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369 def profile_connecting(self, client): |
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370 if client.profile in self.skipped_profiles: |
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371 return |
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372 ctxMng = client._otr_context_manager = ContextManager(self, client) |
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373 client._otr_data = persistent.PersistentBinaryDict(NS_OTR, client.profile) |
| 2128 | 374 yield client._otr_data.load() |
| 375 encrypted_priv_key = client._otr_data.get(PRIVATE_KEY, None) | |
| 1095 | 376 if encrypted_priv_key is not None: |
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377 priv_key = self.host.memory.decrypt_value( |
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378 encrypted_priv_key, client.profile |
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379 ) |
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380 ctxMng.account.privkey = potr.crypt.PK.parsePrivateKey( |
| 3028 | 381 unhexlify(priv_key.encode('utf-8')) |
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382 )[0] |
| 1095 | 383 else: |
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384 ctxMng.account.privkey = None |
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385 ctxMng.account.load_trusts() |
| 1055 | 386 |
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387 def profile_disconnected(self, client): |
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388 if client.profile in self.skipped_profiles: |
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389 self.skipped_profiles.remove(client.profile) |
| 2128 | 390 return |
| 3028 | 391 for context in list(client._otr_context_manager.contexts.values()): |
| 2128 | 392 context.disconnect() |
| 393 del client._otr_context_manager | |
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394 |
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395 # encryption plugin methods |
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396 |
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397 def start_encryption(self, client, entity_jid): |
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398 self.start_refresh(client, entity_jid) |
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399 |
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400 def stop_encryption(self, client, entity_jid): |
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401 self.end_session(client, entity_jid) |
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402 |
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403 def get_trust_ui(self, client, entity_jid): |
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404 if not entity_jid.resource: |
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405 entity_jid.resource = self.host.memory.main_resource_get( |
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406 client, entity_jid |
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407 ) # FIXME: temporary and unsecure, must be changed when frontends |
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408 # are refactored |
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409 ctxMng = client._otr_context_manager |
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410 otrctx = ctxMng.get_context_for_user(entity_jid) |
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411 priv_key = ctxMng.account.privkey |
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412 |
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413 if priv_key is None: |
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414 # we have no private key yet |
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415 dialog = xml_tools.XMLUI( |
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416 C.XMLUI_DIALOG, |
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417 dialog_opt={ |
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418 C.XMLUI_DATA_TYPE: C.XMLUI_DIALOG_MESSAGE, |
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419 C.XMLUI_DATA_MESS: _( |
| 3028 | 420 "You have no private key yet, start an OTR conversation to " |
| 421 "have one" | |
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422 ), |
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423 C.XMLUI_DATA_LVL: C.XMLUI_DATA_LVL_WARNING, |
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424 }, |
| 3028 | 425 title=_("No private key"), |
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426 ) |
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427 return dialog |
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428 |
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429 other_fingerprint = otrctx.getCurrentKey() |
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430 |
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431 if other_fingerprint is None: |
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432 # we have a private key, but not the fingerprint of our correspondent |
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433 dialog = xml_tools.XMLUI( |
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434 C.XMLUI_DIALOG, |
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435 dialog_opt={ |
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436 C.XMLUI_DATA_TYPE: C.XMLUI_DIALOG_MESSAGE, |
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437 C.XMLUI_DATA_MESS: _( |
| 3028 | 438 "Your fingerprint is:\n{fingerprint}\n\n" |
| 439 "Start an OTR conversation to have your correspondent one." | |
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440 ).format(fingerprint=priv_key), |
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441 C.XMLUI_DATA_LVL: C.XMLUI_DATA_LVL_INFO, |
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442 }, |
| 3028 | 443 title=_("Fingerprint"), |
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444 ) |
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445 return dialog |
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446 |
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447 def set_trust(raw_data, profile): |
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448 if xml_tools.is_xmlui_cancelled(raw_data): |
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449 return {} |
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450 # This method is called when authentication form is submited |
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451 data = xml_tools.xmlui_result_2_data_form_result(raw_data) |
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452 if data["match"] == "yes": |
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453 otrctx.setCurrentTrust(OTR_STATE_TRUSTED) |
| 3028 | 454 note_msg = _("Your correspondent {correspondent} is now TRUSTED") |
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455 self.host.bridge.otr_state( |
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456 OTR_STATE_TRUSTED, entity_jid.full(), client.profile |
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457 ) |
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458 else: |
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459 otrctx.setCurrentTrust("") |
| 3028 | 460 note_msg = _("Your correspondent {correspondent} is now UNTRUSTED") |
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461 self.host.bridge.otr_state( |
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462 OTR_STATE_UNTRUSTED, entity_jid.full(), client.profile |
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463 ) |
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464 note = xml_tools.XMLUI( |
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465 C.XMLUI_DIALOG, |
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466 dialog_opt={ |
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467 C.XMLUI_DATA_TYPE: C.XMLUI_DIALOG_NOTE, |
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468 C.XMLUI_DATA_MESS: note_msg.format(correspondent=otrctx.peer), |
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469 }, |
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470 ) |
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471 return {"xmlui": note.toXml()} |
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472 |
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473 submit_id = self.host.register_callback(set_trust, with_data=True, one_shot=True) |
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474 trusted = otrctx.is_trusted() |
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475 |
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476 xmlui = xml_tools.XMLUI( |
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477 C.XMLUI_FORM, |
| 3028 | 478 title=_("Authentication ({entity_jid})").format(entity_jid=entity_jid.full()), |
|
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479 submit_id=submit_id, |
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480 ) |
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481 xmlui.addText(_(AUTH_TXT)) |
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|
482 xmlui.addDivider() |
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|
483 xmlui.addText( |
| 3028 | 484 D_("Your own fingerprint is:\n{fingerprint}").format(fingerprint=priv_key) |
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485 ) |
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|
486 xmlui.addText( |
| 3028 | 487 D_("Your correspondent fingerprint should be:\n{fingerprint}").format( |
|
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|
488 fingerprint=other_fingerprint |
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489 ) |
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|
490 ) |
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|
491 xmlui.addDivider("blank") |
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492 xmlui.change_container("pairs") |
| 3028 | 493 xmlui.addLabel(D_("Is your correspondent fingerprint the same as here ?")) |
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|
494 xmlui.addList( |
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|
495 "match", [("yes", _("yes")), ("no", _("no"))], ["yes" if trusted else "no"] |
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496 ) |
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|
497 return xmlui |
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|
498 |
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|
499 def _otr_start_refresh(self, menu_data, profile): |
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500 """Start or refresh an OTR session |
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501 |
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502 @param menu_data: %(menu_data)s |
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503 @param profile: %(doc_profile)s |
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504 """ |
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505 client = self.host.get_client(profile) |
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506 try: |
|
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507 to_jid = jid.JID(menu_data["jid"]) |
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508 except KeyError: |
| 3028 | 509 log.error(_("jid key is not present !")) |
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510 return defer.fail(exceptions.DataError) |
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511 self.start_refresh(client, to_jid) |
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512 return {} |
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513 |
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|
514 def start_refresh(self, client, to_jid): |
| 2125 | 515 """Start or refresh an OTR session |
| 516 | |
| 517 @param to_jid(jid.JID): jid to start encrypted session with | |
| 518 """ | |
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|
519 encrypted_session = client.encryption.getSession(to_jid.userhostJID()) |
| 3028 | 520 if encrypted_session and encrypted_session['plugin'].namespace != NS_OTR: |
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|
521 raise exceptions.ConflictError(_( |
| 3028 | 522 "Can't start an OTR session, there is already an encrypted session " |
| 523 "with {name}").format(name=encrypted_session['plugin'].name)) | |
| 2125 | 524 if not to_jid.resource: |
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525 to_jid.resource = self.host.memory.main_resource_get( |
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526 client, to_jid |
|
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|
527 ) # FIXME: temporary and unsecure, must be changed when frontends |
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|
528 # are refactored |
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529 otrctx = client._otr_context_manager.get_context_for_user(to_jid) |
| 3040 | 530 query = otrctx.sendMessage(0, b"?OTRv?") |
| 2125 | 531 otrctx.inject(query) |
| 532 | |
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533 def _otr_session_end(self, menu_data, profile): |
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534 """End an OTR session |
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535 |
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|
536 @param menu_data: %(menu_data)s |
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|
537 @param profile: %(doc_profile)s |
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|
538 """ |
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|
539 client = self.host.get_client(profile) |
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540 try: |
|
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|
541 to_jid = jid.JID(menu_data["jid"]) |
|
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|
542 except KeyError: |
| 3028 | 543 log.error(_("jid key is not present !")) |
|
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|
544 return defer.fail(exceptions.DataError) |
|
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|
545 self.end_session(client, to_jid) |
| 2125 | 546 return {} |
| 547 | |
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548 def end_session(self, client, to_jid): |
| 2125 | 549 """End an OTR session""" |
| 550 if not to_jid.resource: | |
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551 to_jid.resource = self.host.memory.main_resource_get( |
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552 client, to_jid |
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553 ) # FIXME: temporary and unsecure, must be changed when frontends |
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554 # are refactored |
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555 otrctx = client._otr_context_manager.get_context_for_user(to_jid) |
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556 otrctx.disconnect() |
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557 return {} |
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558 |
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559 def _otr_authenticate(self, menu_data, profile): |
| 2125 | 560 """End an OTR session |
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561 |
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562 @param menu_data: %(menu_data)s |
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563 @param profile: %(doc_profile)s |
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564 """ |
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565 client = self.host.get_client(profile) |
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566 try: |
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567 to_jid = jid.JID(menu_data["jid"]) |
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568 except KeyError: |
| 3028 | 569 log.error(_("jid key is not present !")) |
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570 return defer.fail(exceptions.DataError) |
| 2125 | 571 return self.authenticate(client, to_jid) |
| 572 | |
| 573 def authenticate(self, client, to_jid): | |
| 574 """Authenticate other user and see our own fingerprint""" | |
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575 xmlui = self.get_trust_ui(client, to_jid) |
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576 return {"xmlui": xmlui.toXml()} |
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577 |
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578 def _drop_priv_key(self, menu_data, profile): |
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579 """Drop our private Key |
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580 |
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581 @param menu_data: %(menu_data)s |
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582 @param profile: %(doc_profile)s |
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583 """ |
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584 client = self.host.get_client(profile) |
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585 try: |
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586 to_jid = jid.JID(menu_data["jid"]) |
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587 if not to_jid.resource: |
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588 to_jid.resource = self.host.memory.main_resource_get( |
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589 client, to_jid |
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590 ) # FIXME: temporary and unsecure, must be changed when frontends |
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591 # are refactored |
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592 except KeyError: |
| 3028 | 593 log.error(_("jid key is not present !")) |
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594 return defer.fail(exceptions.DataError) |
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595 |
| 2128 | 596 ctxMng = client._otr_context_manager |
|
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597 if ctxMng.account.privkey is None: |
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598 return { |
| 3028 | 599 "xmlui": xml_tools.note(_("You don't have a private key yet !")).toXml() |
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600 } |
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601 |
|
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602 def drop_key(data, profile): |
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603 if C.bool(data["answer"]): |
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604 # we end all sessions |
| 3028 | 605 for context in list(ctxMng.contexts.values()): |
|
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606 context.disconnect() |
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607 ctxMng.account.privkey = None |
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608 ctxMng.account.getPrivkey() # as account.privkey is None, getPrivkey |
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609 # will generate a new key, and save it |
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610 return { |
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611 "xmlui": xml_tools.note( |
| 3028 | 612 D_("Your private key has been dropped") |
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613 ).toXml() |
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614 } |
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615 return {} |
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|
616 |
|
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617 submit_id = self.host.register_callback(drop_key, with_data=True, one_shot=True) |
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618 |
|
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619 confirm = xml_tools.XMLUI( |
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620 C.XMLUI_DIALOG, |
| 3028 | 621 title=_("Confirm private key drop"), |
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622 dialog_opt={"type": C.XMLUI_DIALOG_CONFIRM, "message": _(DROP_TXT)}, |
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623 submit_id=submit_id, |
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624 ) |
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625 return {"xmlui": confirm.toXml()} |
|
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|
626 |
|
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627 def _received_treatment(self, data, client): |
|
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628 from_jid = data["from"] |
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|
629 log.debug("_received_treatment [from_jid = %s]" % from_jid) |
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630 otrctx = client._otr_context_manager.get_context_for_user(from_jid) |
| 1055 | 631 |
| 632 try: | |
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633 message = ( |
| 3028 | 634 next(iter(data["message"].values())) |
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635 ) # FIXME: Q&D fix for message refactoring, message is now a dict |
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636 res = otrctx.receiveMessage(message.encode("utf-8")) |
|
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|
637 except (potr.context.UnencryptedMessage, potr.context.NotOTRMessage): |
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|
638 # potr has a bug with Python 3 and test message against str while bytes are |
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|
639 # expected, resulting in a NoOTRMessage raised instead of UnencryptedMessage; |
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|
640 # so we catch NotOTRMessage as a workaround |
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|
641 # TODO: report this upstream |
| 2128 | 642 encrypted = False |
| 1095 | 643 if otrctx.state == potr.context.STATE_ENCRYPTED: |
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|
644 log.warning( |
| 3028 | 645 "Received unencrypted message in an encrypted context (from {jid})" |
|
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|
646 .format(jid=from_jid.full()) |
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647 ) |
| 2125 | 648 |
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649 feedback = ( |
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|
650 D_( |
| 3028 | 651 "WARNING: received unencrypted data in a supposedly encrypted " |
| 652 "context" | |
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653 ), |
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|
654 ) |
|
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|
655 client.feedback(from_jid, feedback) |
|
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|
656 except potr.context.NotEncryptedError: |
| 3028 | 657 msg = D_("WARNING: received OTR encrypted data in an unencrypted context") |
|
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|
658 log.warning(msg) |
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|
659 feedback = msg |
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|
660 client.feedback(from_jid, msg) |
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|
661 raise failure.Failure(exceptions.CancelError(msg)) |
|
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|
662 except potr.context.ErrorReceived as e: |
| 3028 | 663 msg = D_("WARNING: received OTR error message: {msg}".format(msg=e)) |
|
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|
664 log.warning(msg) |
|
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|
665 feedback = msg |
|
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|
666 client.feedback(from_jid, msg) |
|
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|
667 raise failure.Failure(exceptions.CancelError(msg)) |
|
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|
668 except potr.crypt.InvalidParameterError as e: |
| 3028 | 669 msg = D_("Error while trying de decrypt OTR message: {msg}".format(msg=e)) |
|
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|
670 log.warning(msg) |
|
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|
671 feedback = msg |
|
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|
672 client.feedback(from_jid, msg) |
|
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673 raise failure.Failure(exceptions.CancelError(msg)) |
|
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|
674 except StopIteration: |
|
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|
675 return data |
| 2128 | 676 else: |
| 677 encrypted = True | |
| 1055 | 678 |
| 2128 | 679 if encrypted: |
| 1055 | 680 if res[0] != None: |
| 681 # decrypted messages handling. | |
|
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|
682 # receiveMessage() will return a tuple, |
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|
683 # the first part of which will be the decrypted message |
|
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|
684 data["message"] = { |
| 3028 | 685 "": res[0] |
|
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686 } # FIXME: Q&D fix for message refactoring, message is now a dict |
|
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|
687 try: |
|
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|
688 # we want to keep message in history, even if no store is |
|
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|
689 # requested in message hints |
| 3028 | 690 del data["history"] |
|
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|
691 except KeyError: |
|
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|
692 pass |
| 2128 | 693 # TODO: add skip history as an option, but by default we don't skip it |
|
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|
694 # data[u'history'] = C.HISTORY_SKIP # we send the decrypted message to |
|
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|
695 # frontends, but we don't want it in |
|
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|
696 # history |
| 1055 | 697 else: |
|
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|
698 raise failure.Failure( |
|
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|
699 exceptions.CancelError("Cancelled by OTR") |
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|
700 ) # no message at all (no history, no signal) |
|
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|
701 |
|
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|
702 client.encryption.mark_as_encrypted(data, namespace=NS_OTR) |
|
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|
703 trusted = otrctx.is_trusted() |
|
2743
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|
704 |
|
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|
705 if trusted: |
|
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diff
changeset
|
706 client.encryption.mark_as_trusted(data) |
|
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diff
changeset
|
707 else: |
|
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changeset
|
708 client.encryption.mark_as_untrusted(data) |
|
2743
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diff
changeset
|
709 |
| 2128 | 710 return data |
| 1055 | 711 |
|
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|
712 def _received_treatment_for_skipped_profiles(self, data): |
|
1174
bc811915a96a
plugin OTR: do not save in history the encrypted messages for skipped profiles
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parents:
1171
diff
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|
713 """This profile must be skipped because the frontend manages OTR itself, |
| 2128 | 714 |
| 715 but we still need to check if the message must be stored in history or not | |
| 716 """ | |
|
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|
717 # XXX: FIXME: this should not be done on a per-profile basis, but per-message |
|
1955
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1934
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changeset
|
718 try: |
|
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|
719 message = ( |
| 3028 | 720 iter(data["message"].values()).next().encode("utf-8") |
|
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|
721 ) # FIXME: Q&D fix for message refactoring, message is now a dict |
|
1955
633b5c21aefd
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diff
changeset
|
722 except StopIteration: |
|
633b5c21aefd
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parents:
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diff
changeset
|
723 return data |
|
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diff
changeset
|
724 if message.startswith(potr.proto.OTRTAG): |
|
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changeset
|
725 # FIXME: it may be better to cancel the message and send it direclty to |
|
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changeset
|
726 # bridge |
|
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changeset
|
727 # this is used by Libervia, but this may send garbage message to |
|
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parents:
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diff
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|
728 # other frontends |
|
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changeset
|
729 # if they are used at the same time as Libervia. |
|
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diff
changeset
|
730 # Hard to avoid with decryption on Libervia though. |
| 3028 | 731 data["history"] = C.HISTORY_SKIP |
|
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changeset
|
732 return data |
|
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changeset
|
733 |
|
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|
734 def message_received_trigger(self, client, message_elt, post_treat): |
|
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|
735 if client.is_component: |
|
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changeset
|
736 return True |
|
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changeset
|
737 if message_elt.getAttribute("type") == C.MESS_TYPE_GROUPCHAT: |
| 2128 | 738 # OTR is not possible in group chats |
| 739 return True | |
|
2821
3d735e0ab2fa
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Goffi <goffi@goffi.org>
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diff
changeset
|
740 from_jid = jid.JID(message_elt['from']) |
|
3d735e0ab2fa
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changeset
|
741 if not from_jid.resource or from_jid.userhostJID() == client.jid.userhostJID(): |
|
3d735e0ab2fa
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diff
changeset
|
742 # OTR is only usable when resources are present |
|
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changeset
|
743 return True |
| 2128 | 744 if client.profile in self.skipped_profiles: |
|
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changeset
|
745 post_treat.addCallback(self._received_treatment_for_skipped_profiles) |
|
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changeset
|
746 else: |
|
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changeset
|
747 post_treat.addCallback(self._received_treatment, client) |
| 1055 | 748 return True |
| 749 | |
|
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diff
changeset
|
750 def _send_message_data_trigger(self, client, mess_data): |
|
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changeset
|
751 if client.is_component: |
|
967a8e109cda
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changeset
|
752 return True |
|
2653
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Goffi <goffi@goffi.org>
parents:
2643
diff
changeset
|
753 encryption = mess_data.get(C.MESS_KEY_ENCRYPTION) |
|
7213caa5c5d0
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2643
diff
changeset
|
754 if encryption is None or encryption['plugin'].namespace != NS_OTR: |
|
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diff
changeset
|
755 return |
|
2653
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diff
changeset
|
756 to_jid = mess_data['to'] |
|
7213caa5c5d0
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parents:
2643
diff
changeset
|
757 if not to_jid.resource: |
|
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changeset
|
758 to_jid.resource = self.host.memory.main_resource_get( |
|
2653
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2643
diff
changeset
|
759 client, to_jid |
|
7213caa5c5d0
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parents:
2643
diff
changeset
|
760 ) # FIXME: temporary and unsecure, must be changed when frontends |
|
4037
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parents:
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changeset
|
761 otrctx = client._otr_context_manager.get_context_for_user(to_jid) |
|
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changeset
|
762 message_elt = mess_data["xml"] |
|
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parents:
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diff
changeset
|
763 if otrctx.state == potr.context.STATE_ENCRYPTED: |
| 3028 | 764 log.debug("encrypting message") |
|
2138
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parents:
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diff
changeset
|
765 body = None |
|
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changeset
|
766 for child in list(message_elt.children): |
|
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changeset
|
767 if child.name == "body": |
|
2138
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plugin OTR, core; use of new sendMessage + OTR mini refactoring:
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parents:
2132
diff
changeset
|
768 # we remove all unencrypted body, |
|
6e509ee853a8
plugin OTR, core; use of new sendMessage + OTR mini refactoring:
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parents:
2132
diff
changeset
|
769 # and will only encrypt the first one |
|
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plugin OTR, core; use of new sendMessage + OTR mini refactoring:
Goffi <goffi@goffi.org>
parents:
2132
diff
changeset
|
770 if body is None: |
|
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plugin OTR, core; use of new sendMessage + OTR mini refactoring:
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parents:
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changeset
|
771 body = child |
|
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changeset
|
772 message_elt.children.remove(child) |
|
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changeset
|
773 elif child.name == "html": |
|
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diff
changeset
|
774 # we don't want any XHTML-IM element |
|
6e509ee853a8
plugin OTR, core; use of new sendMessage + OTR mini refactoring:
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parents:
2132
diff
changeset
|
775 message_elt.children.remove(child) |
|
6e509ee853a8
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parents:
2132
diff
changeset
|
776 if body is None: |
| 3028 | 777 log.warning("No message found") |
|
1168
39572f9d5249
plugin OTR: fixes handling of the FINISHED state
souliane <souliane@mailoo.org>
parents:
1149
diff
changeset
|
778 else: |
|
4037
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parents:
3795
diff
changeset
|
779 self._p_carbons.set_private(message_elt) |
|
524856bd7b19
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diff
changeset
|
780 self._p_hints.add_hint_elements(message_elt, [ |
|
2653
7213caa5c5d0
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2643
diff
changeset
|
781 self._p_hints.HINT_NO_COPY, |
|
7213caa5c5d0
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2643
diff
changeset
|
782 self._p_hints.HINT_NO_PERMANENT_STORE]) |
| 3028 | 783 otrctx.sendMessage(0, str(body).encode("utf-8"), appdata=mess_data) |
| 1055 | 784 else: |
|
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changeset
|
785 feedback = D_( |
| 3028 | 786 "Your message was not sent because your correspondent closed the " |
| 787 "encrypted conversation on his/her side. " | |
| 788 "Either close your own side, or refresh the session." | |
|
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changeset
|
789 ) |
| 3028 | 790 log.warning(_("Message discarded because closed encryption channel")) |
|
2144
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parents:
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changeset
|
791 client.feedback(to_jid, feedback) |
| 3028 | 792 raise failure.Failure(exceptions.CancelError("Cancelled by OTR plugin")) |
| 2128 | 793 |
|
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diff
changeset
|
794 def send_message_trigger(self, client, mess_data, pre_xml_treatments, |
|
2643
189e38fb11ff
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parents:
2624
diff
changeset
|
795 post_xml_treatments): |
|
3795
967a8e109cda
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Goffi <goffi@goffi.org>
parents:
3479
diff
changeset
|
796 if client.is_component: |
|
967a8e109cda
core (xmpp): adapt message workflow to components:
Goffi <goffi@goffi.org>
parents:
3479
diff
changeset
|
797 return True |
|
2624
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changeset
|
798 if mess_data["type"] == "groupchat": |
| 1055 | 799 return True |
|
2643
189e38fb11ff
core: style improvments (90 chars limit)
Goffi <goffi@goffi.org>
parents:
2624
diff
changeset
|
800 |
|
189e38fb11ff
core: style improvments (90 chars limit)
Goffi <goffi@goffi.org>
parents:
2624
diff
changeset
|
801 if client.profile in self.skipped_profiles: |
|
189e38fb11ff
core: style improvments (90 chars limit)
Goffi <goffi@goffi.org>
parents:
2624
diff
changeset
|
802 # FIXME: should not be done on a per-profile basis |
| 2128 | 803 return True |
|
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core: style improvments (90 chars limit)
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parents:
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diff
changeset
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804 |
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parents:
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805 to_jid = copy.copy(mess_data["to"]) |
|
2653
7213caa5c5d0
plugin OTR: integrated in new encryption handler + fixed use of bare jid where full jid was expected
Goffi <goffi@goffi.org>
parents:
2643
diff
changeset
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806 if client.encryption.getSession(to_jid.userhostJID()): |
|
7213caa5c5d0
plugin OTR: integrated in new encryption handler + fixed use of bare jid where full jid was expected
Goffi <goffi@goffi.org>
parents:
2643
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changeset
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807 # there is already an encrypted session with this entity |
|
7213caa5c5d0
plugin OTR: integrated in new encryption handler + fixed use of bare jid where full jid was expected
Goffi <goffi@goffi.org>
parents:
2643
diff
changeset
|
808 return True |
|
7213caa5c5d0
plugin OTR: integrated in new encryption handler + fixed use of bare jid where full jid was expected
Goffi <goffi@goffi.org>
parents:
2643
diff
changeset
|
809 |
|
2138
6e509ee853a8
plugin OTR, core; use of new sendMessage + OTR mini refactoring:
Goffi <goffi@goffi.org>
parents:
2132
diff
changeset
|
810 if not to_jid.resource: |
|
4037
524856bd7b19
massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents:
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changeset
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811 to_jid.resource = self.host.memory.main_resource_get( |
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812 client, to_jid |
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parents:
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diff
changeset
|
813 ) # FIXME: full jid may not be known |
|
2643
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core: style improvments (90 chars limit)
Goffi <goffi@goffi.org>
parents:
2624
diff
changeset
|
814 |
|
4037
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massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents:
3795
diff
changeset
|
815 otrctx = client._otr_context_manager.get_context_for_user(to_jid) |
|
2643
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core: style improvments (90 chars limit)
Goffi <goffi@goffi.org>
parents:
2624
diff
changeset
|
816 |
|
2138
6e509ee853a8
plugin OTR, core; use of new sendMessage + OTR mini refactoring:
Goffi <goffi@goffi.org>
parents:
2132
diff
changeset
|
817 if otrctx.state != potr.context.STATE_PLAINTEXT: |
|
3226
2f406b762788
core (memory/encryption): encryption session are now restored on client connection
Goffi <goffi@goffi.org>
parents:
3172
diff
changeset
|
818 defer.ensureDeferred(client.encryption.start(to_jid, NS_OTR)) |
|
4037
524856bd7b19
massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents:
3795
diff
changeset
|
819 client.encryption.set_encryption_flag(mess_data) |
|
2643
189e38fb11ff
core: style improvments (90 chars limit)
Goffi <goffi@goffi.org>
parents:
2624
diff
changeset
|
820 if not mess_data["to"].resource: |
|
189e38fb11ff
core: style improvments (90 chars limit)
Goffi <goffi@goffi.org>
parents:
2624
diff
changeset
|
821 # if not resource was given, we force it here |
|
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56f94936df1e
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Goffi <goffi@goffi.org>
parents:
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diff
changeset
|
822 mess_data["to"] = to_jid |
| 2128 | 823 return True |
| 1055 | 824 |
|
4037
524856bd7b19
massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents:
3795
diff
changeset
|
825 def _presence_received_trigger(self, client, entity, show, priority, statuses): |
|
1480
8d61160ee4b8
core, plugin watched: new plugin, show an alert when a watched entity goes online
Goffi <goffi@goffi.org>
parents:
1463
diff
changeset
|
826 if show != C.PRESENCE_UNAVAILABLE: |
|
1249
3be9d8ab2e15
plugin sec_otr: a trigger was not returning True
souliane <souliane@mailoo.org>
parents:
1246
diff
changeset
|
827 return True |
|
1170
2df6427a5299
plugin OTR: forces FINISHED state if we are in ENCRYPTED state on contact disconnection
souliane <souliane@mailoo.org>
parents:
1169
diff
changeset
|
828 if not entity.resource: |
|
1657
62cd8fc1aef7
plugin sec_otr: fixes bad handling of entity disconnection
souliane <souliane@mailoo.org>
parents:
1480
diff
changeset
|
829 try: |
|
4037
524856bd7b19
massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents:
3795
diff
changeset
|
830 entity.resource = self.host.memory.main_resource_get( |
|
2624
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code style reformatting using black
Goffi <goffi@goffi.org>
parents:
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diff
changeset
|
831 client, entity |
|
2643
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core: style improvments (90 chars limit)
Goffi <goffi@goffi.org>
parents:
2624
diff
changeset
|
832 ) # FIXME: temporary and unsecure, must be changed when frontends |
|
189e38fb11ff
core: style improvments (90 chars limit)
Goffi <goffi@goffi.org>
parents:
2624
diff
changeset
|
833 # are refactored |
|
1657
62cd8fc1aef7
plugin sec_otr: fixes bad handling of entity disconnection
souliane <souliane@mailoo.org>
parents:
1480
diff
changeset
|
834 except exceptions.UnknownEntityError: |
|
62cd8fc1aef7
plugin sec_otr: fixes bad handling of entity disconnection
souliane <souliane@mailoo.org>
parents:
1480
diff
changeset
|
835 return True # entity was not connected |
| 2128 | 836 if entity in client._otr_context_manager.contexts: |
|
4037
524856bd7b19
massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents:
3795
diff
changeset
|
837 otrctx = client._otr_context_manager.get_context_for_user(entity) |
|
1657
62cd8fc1aef7
plugin sec_otr: fixes bad handling of entity disconnection
souliane <souliane@mailoo.org>
parents:
1480
diff
changeset
|
838 otrctx.disconnect() |
|
1170
2df6427a5299
plugin OTR: forces FINISHED state if we are in ENCRYPTED state on contact disconnection
souliane <souliane@mailoo.org>
parents:
1169
diff
changeset
|
839 return True |