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Check END_SESSION messages in processDecrypted

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Matt Corallo 2015-02-25 17:42:47 -08:00 • committed by lilia
parent 29192edcb8
commit 5abf3073d5
3 changed files with 31 additions and 7 deletions
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14
js/libtextsecure.js
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@ -16277,9 +16277,21 @@ textsecure.processDecrypted = function(decrypted, source) {
if (decrypted.flags == null)
decrypted.flags = 0;
if (decrypted.sync !== null && textsecure.utils.unencodeNumber(textsecure.storage.getUnencrypted("number_id"))[0] != source)
throw new Error("Got sync context on a message not from a peer device");
if ((decrypted.flags & textsecure.protobuf.PushMessageContent.Flags.END_SESSION)
== textsecure.protobuf.PushMessageContent.Flags.END_SESSION)
== textsecure.protobuf.PushMessageContent.Flags.END_SESSION) {
decrypted.body = null;
decrypted.attachments = [];
decrypted.group = null;
if (decrypted.sync !== null) {
// We didn't actually close the session - see axolotl_wrapper
// so just throw an error since this message makes no sense
throw new Error("Got a sync END_SESSION message");
}
return Promise.resolve(decrypted);
}
if (decrypted.flags != 0) {
throw new Error("Unknown flags in message");
}