ps5upload/third_party/sevenz-rust2

sevenz-rust2 0.23.0 — vendored, with one fix

Upstream: https://github.com/hasenbanck/sevenz-rust2 (Apache-2.0). Only src/, Cargo.toml and the licence are vendored; upstream's examples, tests and test data are not, so this stays a small patch rather than a fork.

Both workspaces redirect to this copy via [patch.crates-io]:

engine/Cargo.toml              sevenz-rust2 = { path = "../third_party/sevenz-rust2" }
client/src-tauri/Cargo.toml    sevenz-rust2 = { path = "../../third_party/sevenz-rust2" }

The change: archive sizes stay u64 (#434)

Upstream turns 7z sizes, which are u64 in the format, into usize before using them as read limits:

• a block's packed size, which caps how much compressed input the decoder may read (BoundedReader::new(source, pack_size as usize)),
• a block's and each file's unpacked size, which cap the output and decide when the CRC is checked (Crc32VerifyingReader, the per-file BoundedReader),
• the unpacked size handed to each coder (add_decoder), and the remaining length in SharedBoundedReader.

On a 64-bit target that is lossless. On the 32-bit Android build (armv7, shipped in the APK next to arm64) usize is 32 bits, so every limit past 4 GiB wraps: a 4.7 GB block was cut to 405 MB of input. The decoder then ran out of input inside an LZMA chunk and reported dist overflow (or, for stored chunks, a CRC failure), and a file over 4 GiB was cut short. Game backups are routinely tens of GB in one block, so 32-bit Android could not upload most 7z games.

The patch keeps those sizes u64 end to end (BoundedReader::new and Crc32VerifyingReader::new take u64; add_decoder's uncompressed_len is u64; bounds are clamped with usize::try_from(..).map_or(buf.len(), ..) instead of a cast), and the two pre-allocation hints saturate instead of wrapping. Nothing changes on 64-bit.

Verified by decoding a 4.7 GB single-block archive on linux/arm/v7: unpatched, block 0 fails after 405 MB; patched, all 4,700,000,000 bytes come out with the CRC checked.

Reported upstream: https://github.com/hasenbanck/sevenz-rust2/issues/148. Drop this copy once upstream ships the same fix.