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Dylan M. Taylor
ee78a9bd46
PhotoCraft's `photocraft-psd` crate (crates/psd at storytold/photocraft 63b641b55e54bf8f5c83efd977fdb16a2c255431) as `craft-psd`: the lossless PSD/PSB model, reader, writer and builder, descriptors, the Photoshop resource files that share its primitives (.abr, .asl, .aco, .act, .ase, .grd, .pat, .atn, .csh, .shc) and the Photoshop blocks of a layered TIFF. The crate had no dependency on any other PhotoCraft crate. Code is unchanged apart from the crate name, craft-libs' rustfmt width, comments that named other PhotoCraft crates, issue references (now `photocraft#N`), and the corpus tests' directory (`CRAFT_PSD_CORPUS` or `corpus/` at the workspace root). Tests, proptests, fuzz targets and fixtures move with it. Part of #778, #786.
25 lines
1.2 KiB
Rust
25 lines
1.2 KiB
Rust
//! Fuzz the typed image-resource views: `ImageResource::parsed` for an arbitrary resource id, plus
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//! the standalone `ResolutionInfo` and `VersionInfo` parsers. All must return `Ok` / `Err` / `None`
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//! (and `xmp_str` an `Option`), never panic. A parsed `ResolutionInfo` (16 fixed bytes) must be
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//! stable across a byte round trip. The first two bytes pick the id so every typed branch is
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//! reachable; the rest is the resource data.
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#![no_main]
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use libfuzzer_sys::fuzz_target;
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use craft_psd::resources::{ImageResource, ResolutionInfo, VersionInfo};
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fuzz_target!(|data: &[u8]| {
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let (id, body) = match data.split_first_chunk::<2>() {
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Some((p, rest)) => (u16::from_be_bytes(*p), rest.to_vec()),
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None => (0u16, data.to_vec()),
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};
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let r = ImageResource::new(id, body.clone());
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let _ = r.parsed();
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let _ = r.xmp_str();
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if let Ok(ri) = ResolutionInfo::from_bytes(&body) {
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let round = ResolutionInfo::from_bytes(&ri.to_bytes()).expect("resolution info re-parses");
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assert_eq!(round, ri, "ResolutionInfo is not stable across a round trip");
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}
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if let Ok(vi) = VersionInfo::from_bytes(&body) {
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let _ = vi.to_bytes();
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}
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});
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