Cable-Desktop/libtextsecure/axolotl_wrapper.js

80 lines
3.6 KiB
JavaScript

;(function() {
'use strict';
window.textsecure = window.textsecure || {};
window.textsecure.storage = window.textsecure.storage || {};
textsecure.storage.axolotl = new AxolotlStore();
var axolotlInstance = axolotl.protocol(textsecure.storage.axolotl);
var decodeMessageContents = function(res) {
var finalMessage = textsecure.protobuf.PushMessageContent.decode(res[0]);
if ((finalMessage.flags & textsecure.protobuf.PushMessageContent.Flags.END_SESSION)
== textsecure.protobuf.PushMessageContent.Flags.END_SESSION &&
finalMessage.sync !== null)
res[1]();
return finalMessage;
};
var handlePreKeyWhisperMessage = function(from, message) {
try {
return axolotlInstance.handlePreKeyWhisperMessage(from, message);
} catch(e) {
if (e.message === 'Unknown identity key') {
// create an error that the UI will pick up and ask the
// user if they want to re-negotiate
throw new textsecure.IncomingIdentityKeyError(from, message);
}
throw e;
}
};
window.textsecure = window.textsecure || {};
window.textsecure.protocol_wrapper = {
handleIncomingPushMessageProto: function(proto) {
switch(proto.type) {
case textsecure.protobuf.IncomingPushMessageSignal.Type.PLAINTEXT:
return Promise.resolve(textsecure.protobuf.PushMessageContent.decode(proto.message));
case textsecure.protobuf.IncomingPushMessageSignal.Type.CIPHERTEXT:
var from = proto.source + "." + (proto.sourceDevice == null ? 0 : proto.sourceDevice);
return axolotlInstance.decryptWhisperMessage(from, getString(proto.message)).then(decodeMessageContents);
case textsecure.protobuf.IncomingPushMessageSignal.Type.PREKEY_BUNDLE:
if (proto.message.readUint8() != ((3 << 4) | 3))
throw new Error("Bad version byte");
var from = proto.source + "." + (proto.sourceDevice == null ? 0 : proto.sourceDevice);
return handlePreKeyWhisperMessage(from, getString(proto.message)).then(decodeMessageContents);
case textsecure.protobuf.IncomingPushMessageSignal.Type.RECEIPT:
return Promise.resolve(null);
default:
return new Promise(function(resolve, reject) { reject(new Error("Unknown message type")); });
}
},
closeOpenSessionForDevice: function(encodedNumber) {
return axolotlInstance.closeOpenSessionForDevice(encodedNumber)
},
encryptMessageFor: function(deviceObject, pushMessageContent) {
return axolotlInstance.encryptMessageFor(deviceObject, pushMessageContent);
},
startWorker: function() {
axolotlInstance.startWorker('/js/libaxolotl-worker.js');
},
stopWorker: function() {
axolotlInstance.stopWorker();
},
createIdentityKeyRecvSocket: function() {
return axolotlInstance.createIdentityKeyRecvSocket();
},
hasOpenSession: function(encodedNumber) {
return axolotlInstance.hasOpenSession(encodedNumber);
},
getRegistrationId: function(encodedNumber) {
return axolotlInstance.getRegistrationId(encodedNumber);
}
};
var tryMessageAgain = function(from, encodedMessage) {
return axolotlInstance.handlePreKeyWhisperMessage(from, encodedMessage).then(decodeMessageContents);
}
textsecure.replay.registerFunction(tryMessageAgain, textsecure.replay.Type.INIT_SESSION);
})();