Cable-Desktop/libtextsecure/axolotl_wrapper.js

105 lines
4.8 KiB
JavaScript

//TODO: Remove almost everything here...
'use strict';
;(function() {
window.axolotl = window.axolotl || {};
window.axolotl.api = {
getMyRegistrationId: function() {
return textsecure.storage.getUnencrypted("registrationId");
},
storage: {
put: function(key, value) {
return textsecure.storage.putEncrypted(key, value);
},
get: function(key, defaultValue) {
return textsecure.storage.getEncrypted(key, defaultValue);
},
remove: function(key) {
return textsecure.storage.removeEncrypted(key);
},
sessions: {
get: function(identifier) {
return textsecure.storage.devices.getDeviceObject(identifier);
},
put: function(object) {
return textsecure.storage.devices.saveDeviceObject(object);
}
}
},
updateKeys: function(keys) {
return textsecure.api.registerKeys(keys).catch(function(e) {
//TODO: Notify the user somehow?
console.error(e);
});
},
};
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)
res[1]();
return finalMessage;
}
var decodeDeviceContents = function(res) {
var finalMessage = textsecure.protobuf.DeviceControl.decode(res[0]);
//TODO: Add END_SESSION flag for device control messages
/*if ((finalMessage.flags & textsecure.protobuf.PushMessageContent.Flags.END_SESSION)
== textsecure.protobuf.PushMessageContent.Flags.END_SESSION)
res[1]();*/
return finalMessage;
}
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 axolotl.protocol.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 axolotl.protocol.handlePreKeyWhisperMessage(from, getString(proto.message)).then(decodeMessageContents);
case textsecure.protobuf.IncomingPushMessageSignal.Type.RECEIPT:
return Promise.resolve(null);
case textsecure.protobuf.IncomingPushMessageSignal.Type.PREKEY_BUNDLE_DEVICE_CONTROL:
if (proto.message.readUint8() != ((3 << 4) | 3))
throw new Error("Bad version byte");
var from = proto.source + "." + (proto.sourceDevice == null ? 0 : proto.sourceDevice);
return axolotl.protocol.handlePreKeyWhisperMessage(from, getString(proto.message)).then(decodeDeviceContents);
case textsecure.protobuf.IncomingPushMessageSignal.Type.DEVICE_CONTROL:
var from = proto.source + "." + (proto.sourceDevice == null ? 0 : proto.sourceDevice);
return axolotl.protocol.decryptWhisperMessage(from, getString(proto.message)).then(decodeDeviceContents);
default:
return new Promise(function(resolve, reject) { reject(new Error("Unknown message type")); });
}
}
};
var wipeIdentityAndTryMessageAgain = function(from, encodedMessage, message_id) {
// Wipe identity key!
//TODO: Encapsuate with the rest of textsecure.storage.devices
textsecure.storage.removeEncrypted("devices" + from.split('.')[0]);
//TODO: Probably breaks with a devicecontrol message
return axolotl.protocol.handlePreKeyWhisperMessage(from, encodedMessage).then(decodeMessageContents).then(
function(pushMessageContent) {
extension.trigger('message:decrypted', {
message_id : message_id,
data : pushMessageContent
});
}
);
}
textsecure.replay.registerFunction(wipeIdentityAndTryMessageAgain, textsecure.replay.Type.INIT_SESSION);
})();