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Fix protobuf parser for new WA fields and unknown ones #13

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Fix protobuf parser for new WA fields and unknown ones #13

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10 changes: 5 additions & 5 deletions dump-messages.js
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Original file line number Diff line number Diff line change
Expand Up @@ -38,13 +38,10 @@
function decodeProtobufWithState(spec, s) {
const result = {};
while (s.cursor < s.length) {
const header = s.data.getUint8(s.cursor); s.cursor += 1;
const header = decodeVarint(s);
const field = header >> 3;
const wireType = header & 0x7;
const fieldSpec = spec[field];
if (fieldSpec === undefined) {
throw `non-specced field ${field}`;
}
const fieldSpec = spec[field] ?? { type: "bytes", name: `unknown_${field}` };
let fieldValue = null;
if (wireType == 0) { // varint (int32, int64, uint32, uint64, sint32, sint64, bool, enum)
fieldValue = decodeVarint(s);
Expand All @@ -63,6 +60,9 @@
if (fieldSpec.type === "string") {
fieldValue = utf8Decoder.decode(new DataView(s.data.buffer, s.data.byteOffset + s.cursor, length));
s.cursor += length;
} else if (fieldSpec.type === "bytes") {
fieldValue = `(${length} bytes)`;
s.cursor += length;
} else if (typeof fieldSpec.type === "object") {
fieldValue = decodeProtobufWithState(fieldSpec.type, {
data: new DataView(s.data.buffer, s.data.byteOffset + s.cursor, length),
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