DevComp/zip-rs-wasm
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Merge branch 'fuzz' of https://github.com/killercup/zip-rs into killercup-fuzz

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Mathijs van de Nes 2017-07-05 21:30:02 +02:00
commit 3c90de3d1a
1 changed files with 3 additions and 1 deletions
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src/read.rs
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@ -85,7 +85,9 @@ impl<R: Read+io::Seek> ZipArchive<R>
// Some zip files have data prepended to them, resulting in the offsets all being too small. Get the amount of
// error by comparing the actual file position we found the CDE at with the offset recorded in the CDE.
let archive_offset = cde_start_pos - footer.central_directory_size - footer.central_directory_offset;
let archive_offset = cde_start_pos.checked_sub(footer.central_directory_size)
.and_then(|x| x.checked_sub(footer.central_directory_offset))
.ok_or(ZipError::InvalidArchive("Invalid central directory size or offset"))?;
let directory_start = (footer.central_directory_offset + archive_offset) as u64;
let number_of_files = footer.number_of_files_on_this_disk as usize;