Cable-Desktop/libtextsecure/contacts_parser.js
lilia 5925c2fe84 Support for group sync
Protocol and handling is all analogous to contact sync: Multiple
GroupDetails structs are packed into a single attachment blob and parsed
on our end. We don't display the synced groups in the conversation list
until a new message is sent to one of them.

// FREEBIE
2015-06-25 13:24:32 -07:00

52 righe
1,7 KiB
JavaScript

/*
* vim: ts=4:sw=4:expandtab
*/
function ProtoParser(arrayBuffer, protobuf) {
this.protobuf = protobuf;
this.buffer = new dcodeIO.ByteBuffer();
this.buffer.append(arrayBuffer);
this.buffer.offset = 0;
this.buffer.limit = arrayBuffer.byteLength;
}
ProtoParser.prototype = {
constructor: ProtoParser,
next: function() {
try {
if (this.buffer.limit === this.buffer.offset) {
return undefined; // eof
}
var len = this.buffer.readVarint32();
var nextBuffer = this.buffer.slice(
this.buffer.offset, this.buffer.offset+len
).toArrayBuffer();
// TODO: de-dupe ByteBuffer.js includes in libaxo/libts
// then remove this toArrayBuffer call.
var proto = this.protobuf.decode(nextBuffer);
this.buffer.skip(len);
if (proto.avatar) {
var attachmentLen = proto.avatar.length;
proto.avatar.data = this.buffer.slice(
this.buffer.offset, this.buffer.offset + attachmentLen
).toArrayBuffer();
this.buffer.skip(attachmentLen);
}
return proto;
} catch(e) {
console.log(e);
}
}
};
var GroupBuffer = function(arrayBuffer) {
ProtoParser.call(this, arrayBuffer, textsecure.protobuf.GroupDetails);
};
GroupBuffer.prototype = Object.create(ProtoParser.prototype);
GroupBuffer.prototype.constructor = GroupBuffer;
var ContactBuffer = function(arrayBuffer) {
ProtoParser.call(this, arrayBuffer, textsecure.protobuf.ContactDetails);
};
ContactBuffer.prototype = Object.create(ProtoParser.prototype);
ContactBuffer.prototype.constructor = ContactBuffer;