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Randomly pad all sync messages

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WhisperSystems/libsignal-service-java@c46cdc0aa5

// FREEBIE
This commit is contained in:
lilia 2017-06-21 16:21:47 -07:00 • committed by Scott Nonnenberg
parent 7bfb66b13b
commit 6e758fc1ea
2 changed files with 36 additions and 10 deletions
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23
js/libtextsecure.js
View file

@ -39192,6 +39192,19 @@ MessageSender.prototype = {
}.bind(this));
},
createSyncMessage: function() {
var syncMessage = new textsecure.protobuf.SyncMessage();
// Generate a random int from 1 and 512
var buffer = libsignal.crypto.getRandomBytes(1);
var paddingLength = (new Uint8Array(buffer)[0] & 0x1ff) + 1;
// Generate a random padding buffer of the chosen size
syncMessage.padding = libsignal.crypto.getRandomBytes(paddingLength);
return syncMessage;
},
sendSyncMessage: function(encodedDataMessage, timestamp, destination, expirationStartTimestamp) {
var myNumber = textsecure.storage.user.getNumber();
var myDevice = textsecure.storage.user.getDeviceId();
@ -39209,7 +39222,7 @@ MessageSender.prototype = {
if (expirationStartTimestamp) {
sentMessage.expirationStartTimestamp = expirationStartTimestamp;
}
var syncMessage = new textsecure.protobuf.SyncMessage();
var syncMessage = this.createSyncMessage();
syncMessage.sent = sentMessage;
var contentMessage = new textsecure.protobuf.Content();
contentMessage.syncMessage = syncMessage;
@ -39226,7 +39239,7 @@ MessageSender.prototype = {
if (myDevice != 1) {
var request = new textsecure.protobuf.SyncMessage.Request();
request.type = textsecure.protobuf.SyncMessage.Request.Type.GROUPS;
var syncMessage = new textsecure.protobuf.SyncMessage();
var syncMessage = this.createSyncMessage();
syncMessage.request = request;
var contentMessage = new textsecure.protobuf.Content();
contentMessage.syncMessage = syncMessage;
@ -39241,7 +39254,7 @@ MessageSender.prototype = {
if (myDevice != 1) {
var request = new textsecure.protobuf.SyncMessage.Request();
request.type = textsecure.protobuf.SyncMessage.Request.Type.CONTACTS;
var syncMessage = new textsecure.protobuf.SyncMessage();
var syncMessage = this.createSyncMessage();
syncMessage.request = request;
var contentMessage = new textsecure.protobuf.Content();
contentMessage.syncMessage = syncMessage;
@ -39253,7 +39266,7 @@ MessageSender.prototype = {
var myNumber = textsecure.storage.user.getNumber();
var myDevice = textsecure.storage.user.getDeviceId();
if (myDevice != 1) {
var syncMessage = new textsecure.protobuf.SyncMessage();
var syncMessage = this.createSyncMessage();
syncMessage.read = [];
for (var i = 0; i < reads.length; ++i) {
var read = new textsecure.protobuf.SyncMessage.Read();
@ -39276,7 +39289,7 @@ MessageSender.prototype = {
verified.destination = destination;
verified.identityKey = identityKey;
var syncMessage = new textsecure.protobuf.SyncMessage();
var syncMessage = this.createSyncMessage();
syncMessage.verified = verified;
var contentMessage = new textsecure.protobuf.Content();

23
libtextsecure/sendmessage.js
View file

@ -230,6 +230,19 @@ MessageSender.prototype = {
}.bind(this));
},
createSyncMessage: function() {
var syncMessage = new textsecure.protobuf.SyncMessage();
// Generate a random int from 1 and 512
var buffer = libsignal.crypto.getRandomBytes(1);
var paddingLength = (new Uint8Array(buffer)[0] & 0x1ff) + 1;
// Generate a random padding buffer of the chosen size
syncMessage.padding = libsignal.crypto.getRandomBytes(paddingLength);
return syncMessage;
},
sendSyncMessage: function(encodedDataMessage, timestamp, destination, expirationStartTimestamp) {
var myNumber = textsecure.storage.user.getNumber();
var myDevice = textsecure.storage.user.getDeviceId();
@ -247,7 +260,7 @@ MessageSender.prototype = {
if (expirationStartTimestamp) {
sentMessage.expirationStartTimestamp = expirationStartTimestamp;
}
var syncMessage = new textsecure.protobuf.SyncMessage();
var syncMessage = this.createSyncMessage();
syncMessage.sent = sentMessage;
var contentMessage = new textsecure.protobuf.Content();
contentMessage.syncMessage = syncMessage;
@ -264,7 +277,7 @@ MessageSender.prototype = {
if (myDevice != 1) {
var request = new textsecure.protobuf.SyncMessage.Request();
request.type = textsecure.protobuf.SyncMessage.Request.Type.GROUPS;
var syncMessage = new textsecure.protobuf.SyncMessage();
var syncMessage = this.createSyncMessage();
syncMessage.request = request;
var contentMessage = new textsecure.protobuf.Content();
contentMessage.syncMessage = syncMessage;
@ -279,7 +292,7 @@ MessageSender.prototype = {
if (myDevice != 1) {
var request = new textsecure.protobuf.SyncMessage.Request();
request.type = textsecure.protobuf.SyncMessage.Request.Type.CONTACTS;
var syncMessage = new textsecure.protobuf.SyncMessage();
var syncMessage = this.createSyncMessage();
syncMessage.request = request;
var contentMessage = new textsecure.protobuf.Content();
contentMessage.syncMessage = syncMessage;
@ -291,7 +304,7 @@ MessageSender.prototype = {
var myNumber = textsecure.storage.user.getNumber();
var myDevice = textsecure.storage.user.getDeviceId();
if (myDevice != 1) {
var syncMessage = new textsecure.protobuf.SyncMessage();
var syncMessage = this.createSyncMessage();
syncMessage.read = [];
for (var i = 0; i < reads.length; ++i) {
var read = new textsecure.protobuf.SyncMessage.Read();
@ -314,7 +327,7 @@ MessageSender.prototype = {
verified.destination = destination;
verified.identityKey = identityKey;
var syncMessage = new textsecure.protobuf.SyncMessage();
var syncMessage = this.createSyncMessage();
syncMessage.verified = verified;
var contentMessage = new textsecure.protobuf.Content();