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[Yunq] Check identify byte and ensure users check status code.

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This commit is contained in:
Drew Galbraith 2023-12-01 09:42:11 -08:00
parent 7d9f9a7ae9
commit 3eba0bd9d8
21 changed files with 142 additions and 67 deletions
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14
lib/yunq/serialize.cpp
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@ -1,9 +1,16 @@
#include "serialize.h"
namespace yunq {
namespace {
glcr::Status CheckHeader(const glcr::ByteBuffer& buffer) {
// TODO: Check ident.
const uint64_t kIdentByte = 0x33441122;
} // namespace
glcr::Status CheckHeader(const glcr::ByteBuffer& buffer, uint64_t offset) {
if (buffer.At<uint32_t>(offset + 0) != kIdentByte) {
return glcr::InvalidArgument("Trying to parse an invalid yunq message.");
}
// TODO: Parse core size.
// TODO: Parse extension size.
// TODO: Check CRC32
@ -13,8 +20,7 @@ glcr::Status CheckHeader(const glcr::ByteBuffer& buffer) {
void WriteHeader(glcr::ByteBuffer& bytes, uint64_t offset, uint32_t core_size,
uint32_t extension_size) {
bytes.WriteAt<uint32_t>(
offset + 0, 0xDEADBEEF); // TODO: Chose a more unique ident sequence.
bytes.WriteAt<uint32_t>(offset + 0, kIdentByte);
bytes.WriteAt<uint32_t>(offset + 4, core_size);
bytes.WriteAt<uint32_t>(offset + 8, extension_size);
bytes.WriteAt<uint32_t>(offset + 12, 0); // TODO: Calculate CRC32.