tree 31066a06181a5f80d2e069b2a9761bb1ed143b1d
parent 9f8738892edd83219d2f83fdd73c7c14d5dbb80d
author awillia <awillia@google.com> 1710766585 -0700
committer Copybara-Service <copybara-worker@google.com> 1710766692 -0700

Update ParseQuicTag to only use hex decoding if valid

ParseQuicTag was using absl::HexStringToBytes to unconditionally decode strings when they were 8 bytes long, but for strings with non-hexidecimal characters the return value of calling absl::HexStringToBytes is unspecified. This CL updates ParseQuicTag to only use the output of absl::HexStringToBytes when the call returns success.

This also moves the code away from using the deprecated version of absl::HexStringToBytes, allowing the Chrome build of QUICHE to build without the `-Wno-deprecated-declarations` clang flag.

PiperOrigin-RevId: 616801281