75 lines
2.2 KiB
JavaScript
75 lines
2.2 KiB
JavaScript
/* global dcodeIO, window, textsecure */
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function ProtoParser(arrayBuffer, protobuf) {
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this.protobuf = protobuf;
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this.buffer = new dcodeIO.ByteBuffer();
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this.buffer.append(arrayBuffer);
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this.buffer.offset = 0;
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this.buffer.limit = arrayBuffer.byteLength;
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}
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ProtoParser.prototype = {
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constructor: ProtoParser,
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next() {
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try {
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if (this.buffer.limit === this.buffer.offset) {
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return undefined; // eof
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}
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const len = this.buffer.readVarint32();
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const nextBuffer = this.buffer
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.slice(this.buffer.offset, this.buffer.offset + len)
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.toArrayBuffer();
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// TODO: de-dupe ByteBuffer.js includes in libaxo/libts
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// then remove this toArrayBuffer call.
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const proto = this.protobuf.decode(nextBuffer);
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this.buffer.skip(len);
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if (proto.avatar) {
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const attachmentLen = proto.avatar.length;
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proto.avatar.data = this.buffer
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.slice(this.buffer.offset, this.buffer.offset + attachmentLen)
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.toArrayBuffer();
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this.buffer.skip(attachmentLen);
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}
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if (proto.profileKey) {
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proto.profileKey = proto.profileKey.toArrayBuffer();
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}
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if (proto.uuid) {
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window.normalizeUuids(
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proto,
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['uuid'],
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'ProtoParser::next (proto.uuid)'
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);
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}
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if (proto.members) {
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window.normalizeUuids(
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proto,
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proto.members.map((_member, i) => `members.${i}.uuid`),
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'ProtoParser::next (proto.members)'
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);
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}
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return proto;
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} catch (error) {
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window.log.error(
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'ProtoParser.next error:',
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error && error.stack ? error.stack : error
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);
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}
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return null;
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},
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};
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const GroupBuffer = function Constructor(arrayBuffer) {
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ProtoParser.call(this, arrayBuffer, textsecure.protobuf.GroupDetails);
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};
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GroupBuffer.prototype = Object.create(ProtoParser.prototype);
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GroupBuffer.prototype.constructor = GroupBuffer;
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const ContactBuffer = function Constructor(arrayBuffer) {
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ProtoParser.call(this, arrayBuffer, textsecure.protobuf.ContactDetails);
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};
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ContactBuffer.prototype = Object.create(ProtoParser.prototype);
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ContactBuffer.prototype.constructor = ContactBuffer;
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