reaper (the game process subreaper) and the gameoverlayui launchers were
missed by the original >8 KB inventory. Proton 9.0-4f and Experimental
11.0-20261001 are pinned for how Steam launches Windows games and for
lsteamclient's Steamworks headers (88 SDK versions).
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Pin the exact source of every open-source binary Steam ships:
- 6766 runtime binaries (verified by SHA-256 against their .debs) map to
755 exact Debian/Valve source packages, plus steam-runtime-tools tags
- Valve-built bundled libraries map to upstream tags identified from version
strings: FFmpeg 8.1.2 / 4.3.4, SDL 3.4.0, SDL_image 3.2.0, SDL_ttf 3.1.0,
libvpx v1.10.0-78-g338013712, libaom 3.6.1, libvorbis 1.3.7, libavif 1.0.3/1.0.4
- Inferred (kept decompiled as well): dav1d 1.0.0, and ANGLE / SwiftShader /
Vulkan-ValidationLayers / CEF via Chromium 126.0.6478.183 DEPS
SOURCES.tsv and BINARY_SOURCES.tsv record versions and evidence;
tools/sources.py fetches them into the gitignored sources/ tree.
Decompiled output for exactly-pinned binaries is removed; the proprietary
NVIDIA Cg toolkit binaries stay decompiled.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
tools/verify_runtime.py reads each runtime's package manifest, downloads the
listed packages from repo.steampowered.com (and Debian/Ubuntu fallbacks), plus
pressure-vessel releases and archived scout images, and matches every runtime
ELF by SHA-256. All 6766 unique binaries (16813 incl. duplicates) match exactly;
decomp/runtime/PROVENANCE.tsv records the package, version and URL for each.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
linux32/steamclient.so is the 32-bit build games load via ~/.steam/sdk32.
tools/decompile_batch.sh batches many binaries per Ghidra JVM for the Steam
runtimes, mirroring their paths under decomp/runtime/.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Ghidra 12.1.2 headless decompilation of Steam client version 1788652215:
- decomp/linux64_steamclient.so, ubuntu12_32_steamclient.so, ubuntu12_32_steam:
per-class pseudo-C (RTTI class recovery + Class::Method string naming),
functions.tsv and strings.tsv
- decomp/protos: 107 .proto files and descriptors.pb extracted from steamclient.so
- decomp/steamui: prettified Library UI JS; steamclient_js_api.txt lists the
SteamClient.* backend API it calls
- tools/: decompile/recover/export scripts and proto extractor
GCC exception-handler analysis is disabled: it truncated ~47% of function
bodies on these binaries.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
SalastilandClaude Opus 5.5