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Code Issues 8 Projects Releases Wiki Activity

Move protocol protobufs to libaxolotl/, handling DeviceControl

Browse Source
pull/749/head
Matt Corallo 11 years ago committed by lilia
parent 66cf5b08db
commit 184b1ec89c
8 changed files with 102 additions and 67 deletions
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1
Gruntfile.js
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@ -81,6 +81,7 @@ module.exports = function(grunt) {
'libaxolotl/groups_storage.js',
'libaxolotl/crypto.js',
'libaxolotl/protocol.js',
'libaxolotl/protobufs.js',
],
dest: 'libtextsecure/libaxolotl_concat.js',
},

2
js/background.js
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@ -87,7 +87,7 @@
conversation.save().then(function() {
message.save().then(function() {
return new Promise(function(resolve) {
resolve(textsecure.protocol.handleIncomingPushMessageProto(pushMessage).then(
resolve(textsecure.protocol_wrapper.handleIncomingPushMessageProto(pushMessage).then(
function(pushMessageContent) {
handlePushMessageContent(pushMessageContent, message);
}

17
libaxolotl/protobufs.js
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@ -0,0 +1,17 @@
;(function() {
function loadProtoBufs(filename) {
return dcodeIO.ProtoBuf.loadProtoFile({root: 'protos', file: filename}).build('textsecure');
};
var protocolMessages = loadProtoBufs('WhisperTextProtocol.proto');
var deviceMessages = loadProtoBufs('DeviceMessages.proto');
window.axolotl = window.axolotl || {};
window.axolotl.protobuf = {
WhisperMessage : protocolMessages.WhisperMessage,
PreKeyWhisperMessage : protocolMessages.PreKeyWhisperMessage,
DeviceInit : deviceMessages.DeviceInit,
IdentityKey : deviceMessages.IdentityKey,
DeviceControl : deviceMessages.DeviceControl,
};
})();

77
libaxolotl/protocol.js
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@ -349,20 +349,8 @@ window.textsecure.protocol = function() {
crypto_storage.saveSession(encodedNumber, session);
}
var initSessionFromPreKeyWhisperMessage;
var decryptWhisperMessage;
var handlePreKeyWhisperMessage = function(from, encodedMessage) {
var preKeyProto = textsecure.protobuf.PreKeyWhisperMessage.decode(encodedMessage, 'binary');
return initSessionFromPreKeyWhisperMessage(from, preKeyProto).then(function(sessions) {
return decryptWhisperMessage(from, getString(preKeyProto.message), sessions[0], preKeyProto.registrationId).then(function(result) {
if (sessions[1] !== undefined)
sessions[1]();
return result;
});
});
}
var wipeIdentityAndTryMessageAgain = function(from, encodedMessage, message_id) {
//TODO: Rewrite this!
/*var wipeIdentityAndTryMessageAgain = function(from, encodedMessage, message_id) {
// Wipe identity key!
textsecure.storage.removeEncrypted("devices" + from.split('.')[0]);
return handlePreKeyWhisperMessage(from, encodedMessage).then(
@ -374,9 +362,9 @@ window.textsecure.protocol = function() {
}
);
}
textsecure.replay.registerFunction(wipeIdentityAndTryMessageAgain, textsecure.replay.Type.INIT_SESSION);
textsecure.replay.registerFunction(wipeIdentityAndTryMessageAgain, textsecure.replay.Type.INIT_SESSION);*/
initSessionFromPreKeyWhisperMessage = function(encodedNumber, message) {
var initSessionFromPreKeyWhisperMessage = function(encodedNumber, message) {
var preKeyPair = crypto_storage.getStoredKeyPair("preKey" + message.preKeyId);
var signedPreKeyPair = crypto_storage.getStoredKeyPair("signedKey" + message.signedPreKeyId);
@ -478,15 +466,18 @@ window.textsecure.protocol = function() {
return finish();
}
// returns decrypted protobuf
decryptWhisperMessage = function(encodedNumber, messageBytes, session, registrationId) {
/*************************
*** Public crypto API ***
*************************/
// returns decrypted plaintext
self.decryptWhisperMessage = function(encodedNumber, messageBytes, session, registrationId) {
if (messageBytes[0] != String.fromCharCode((3 << 4) | 3))
throw new Error("Bad version number on WhisperMessage");
var messageProto = messageBytes.substring(1, messageBytes.length - 8);
var mac = messageBytes.substring(messageBytes.length - 8, messageBytes.length);
var message = textsecure.protobuf.WhisperMessage.decode(messageProto, 'binary');
var message = axolotl.protobuf.WhisperMessage.decode(messageProto, 'binary');
var remoteEphemeralKey = toArrayBuffer(message.ephemeralKey);
if (session === undefined) {
@ -526,17 +517,9 @@ window.textsecure.protocol = function() {
}
delete session['pendingPreKey'];
var finalMessage = textsecure.protobuf.PushMessageContent.decode(plaintext);
if ((finalMessage.flags & textsecure.protobuf.PushMessageContent.Flags.END_SESSION)
== textsecure.protobuf.PushMessageContent.Flags.END_SESSION)
closeSession(session, true);
removeOldChains(session);
crypto_storage.saveSession(encodedNumber, session, registrationId);
return finalMessage;
return [plaintext, session];
});
});
});
@ -544,9 +527,18 @@ window.textsecure.protocol = function() {
});
}
/*************************
*** Public crypto API ***
*************************/
// Inits a session (maybe) and then decrypts the message
self.handlePreKeyWhisperMessage = function(from, encodedMessage) {
var preKeyProto = axolotl.protobuf.PreKeyWhisperMessage.decode(encodedMessage, 'binary');
return initSessionFromPreKeyWhisperMessage(from, preKeyProto).then(function(sessions) {
return self.decryptWhisperMessage(from, getString(preKeyProto.message), sessions[0], preKeyProto.registrationId).then(function(result) {
if (sessions[1] !== undefined)
sessions[1]();
return result;
});
});
}
// Decrypts message into a raw string
self.decryptWebsocketMessage = function(message) {
var signaling_key = textsecure.storage.getEncrypted("signaling_key"); //TODO: in crypto_storage
@ -599,31 +591,12 @@ window.textsecure.protocol = function() {
});
};
self.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 decryptWhisperMessage(from, getString(proto.message));
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));
case textsecure.protobuf.IncomingPushMessageSignal.Type.RECEIPT:
return Promise.resolve(null);
default:
return new Promise(function(resolve, reject) { reject(new Error("Unknown message type")); });
}
}
// return Promise(encoded [PreKey]WhisperMessage)
self.encryptMessageFor = function(deviceObject, pushMessageContent) {
var session = crypto_storage.getOpenSession(deviceObject.encodedNumber);
var doEncryptPushMessageContent = function() {
var msg = new textsecure.protobuf.WhisperMessage();
var msg = new axolotl.protobuf.WhisperMessage();
var plaintext = toArrayBuffer(pushMessageContent.encode());
var paddedPlaintext = new Uint8Array(Math.ceil((plaintext.byteLength + 1) / 160.0) * 160 - 1);
@ -672,7 +645,7 @@ window.textsecure.protocol = function() {
});
}
var preKeyMsg = new textsecure.protobuf.PreKeyWhisperMessage();
var preKeyMsg = new axolotl.protobuf.PreKeyWhisperMessage();
preKeyMsg.identityKey = toArrayBuffer(crypto_storage.getIdentityKey().pubKey);
preKeyMsg.registrationId = textsecure.storage.getUnencrypted("registrationId");

45
libtextsecure/axolotl_wrapper.js
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@ -23,4 +23,49 @@
},
},
};
window.textsecure = window.textsecure || {};
window.textsecure.protocol_wrapper = {
handleIncomingPushMessageProto: function(proto) {
var decodeContents = function(res) {
var finalMessage = textsecure.protobuf.PushMessageContent.decode(res[0]);
//TODO
/*if ((finalMessage.flags & textsecure.protobuf.PushMessageContent.Flags.END_SESSION)
== textsecure.protobuf.PushMessageContent.Flags.END_SESSION)
textsecure.protocol.closeSession(res[1], true);*/
return finalMessage;
}
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 textsecure.protocol.decryptWhisperMessage(from, getString(proto.message)).then(decodeContents);
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 textsecure.protocol.handlePreKeyWhisperMessage(from, getString(proto.message)).then(decodeContents);
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 textsecure.protocol.handlePreKeyWhisperMessage(from, getString(proto.message)).then(function(res) {
return textsecure.protobuf.DeviceControl.decode(res[0]);
});
case textsecure.protobuf.IncomingPushMessageSignal.Type.DEVICE_CONTROL:
var from = proto.source + "." + (proto.sourceDevice == null ? 0 : proto.sourceDevice);
return textsecure.protocol.decryptWhisperMessage(from, getString(proto.message)).then(function(res) {
return textsecure.protobuf.DeviceControl.decode(res[0]);
});
default:
return new Promise(function(resolve, reject) { reject(new Error("Unknown message type")); });
}
}
};
})();

3
libtextsecure/protobufs.js
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@ -5,7 +5,6 @@
};
var pushMessages = loadProtoBufs('IncomingPushMessageSignal.proto');
var protocolMessages = loadProtoBufs('WhisperTextProtocol.proto');
var subProtocolMessages = loadProtoBufs('SubProtocol.proto');
var deviceMessages = loadProtoBufs('DeviceMessages.proto');
@ -13,8 +12,6 @@
window.textsecure.protobuf = {
IncomingPushMessageSignal : pushMessages.IncomingPushMessageSignal,
PushMessageContent : pushMessages.PushMessageContent,
WhisperMessage : protocolMessages.WhisperMessage,
PreKeyWhisperMessage : protocolMessages.PreKeyWhisperMessage,
ProvisioningUuid : deviceMessages.ProvisioningUuid,
ProvisionEnvelope : deviceMessages.ProvisionEnvelope,
ProvisionMessage : deviceMessages.ProvisionMessage,

8
libtextsecure/test/protocol_test.js
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@ -31,7 +31,7 @@ describe('Protocol', function() {
message: text_message.encode()
};
return textsecure.protocol.handleIncomingPushMessageProto(server_message).
return textsecure.protocol_wrapper.handleIncomingPushMessageProto(server_message).
then(function(message) {
assert.equal(message.body, text_message.body);
assert.equal(message.attachments.length, text_message.attachments.length);
@ -134,7 +134,7 @@ describe('Protocol', function() {
message.sourceDevice = 1;
try {
var proto = textsecure.protobuf.IncomingPushMessageSignal.decode(message.encode());
return textsecure.protocol.handleIncomingPushMessageProto(proto).then(function(res) {
return textsecure.protocol_wrapper.handleIncomingPushMessageProto(proto).then(function(res) {
if (data.expectTerminateSession)
return res.flags == textsecure.protobuf.PushMessageContent.Flags.END_SESSION;
return res.body == data.expectedSmsText;
@ -182,11 +182,11 @@ describe('Protocol', function() {
//XXX: This should be all we do: isEqual(data.expectedCiphertext, msg.body, false);
if (msg.type == 1) {
var expected = getString(data.expectedCiphertext);
var decoded = textsecure.protobuf.WhisperMessage.decode(expected.substring(1, expected.length - 8), 'binary');
var decoded = axolotl.protobuf.WhisperMessage.decode(expected.substring(1, expected.length - 8), 'binary');
var result = getString(msg.body);
return getString(decoded.encode()) == result.substring(1, result.length - 8);
} else {
var decoded = textsecure.protobuf.PreKeyWhisperMessage.decode(getString(data.expectedCiphertext).substr(1), 'binary');
var decoded = axolotl.protobuf.PreKeyWhisperMessage.decode(getString(data.expectedCiphertext).substr(1), 'binary');
var result = getString(msg.body).substring(1);
return getString(decoded.encode()) == result;
}

16
protos/IncomingPushMessageSignal.proto
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@ -5,12 +5,14 @@ option java_outer_classname = "PushMessageProtos";
message IncomingPushMessageSignal {
enum Type {
UNKNOWN = 0;
CIPHERTEXT = 1;
KEY_EXCHANGE = 2;
PREKEY_BUNDLE = 3;
PLAINTEXT = 4;
RECEIPT = 5;
UNKNOWN = 0;
CIPHERTEXT = 1;
KEY_EXCHANGE = 2;
PREKEY_BUNDLE = 3;
PLAINTEXT = 4;
RECEIPT = 5;
PREKEY_BUNDLE_DEVICE_CONTROL = 6;
DEVICE_CONTROL = 7;
}
optional Type type = 1;
optional string source = 2;
@ -50,4 +52,4 @@ message PushMessageContent {
repeated AttachmentPointer attachments = 2;
optional GroupContext group = 3;
optional uint32 flags = 4;
}
}

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