DevComp/zip-rs-wasm
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

fix: version-needed-to-extract was incorrect in central header, and version-made-by could be lower than that (#100)

Browse source
This commit is contained in:
Chris Hennick 2024-05-24 14:24:25 -07:00
parent 0ff61c0198
commit 0636bd7411
No known key found for this signature in database
GPG key ID: DA47AABA4961C509
1 changed files with 11 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
src/write.rs
View file

@ -787,7 +787,7 @@ impl<W: Write + Seek> ZipWriter<W> {
_ => (options.compression_method, None),
};
let last_modified_time = options.last_modified_time;
let file = ZipFileData {
let mut file = ZipFileData {
system: System::Unix,
version_made_by: DEFAULT_VERSION,
encrypted: options.encrypt_with.is_some(),
@ -814,13 +814,15 @@ impl<W: Write + Seek> ZipWriter<W> {
extra_fields: Vec::new(),
};
let version_needed = file.version_needed();
file.version_made_by = file.version_made_by.max(version_needed as u8);
let index = self.insert_file_data(file)?;
let file = &mut self.files[index];
let writer = self.inner.get_plain();
// local file header signature
writer.write_u32_le(spec::LOCAL_FILE_HEADER_SIGNATURE)?;
// version needed to extract
writer.write_u16_le(file.version_needed())?;
writer.write_u16_le(version_needed)?;
// general purpose bit flag
let is_utf8 = std::str::from_utf8(&file.file_name_raw).is_ok();
let is_ascii = file.file_name_raw.is_ascii();
@ -1399,9 +1401,11 @@ impl<W: Write + Seek> ZipWriter<W> {
fn write_central_and_footer(&mut self) -> Result<u64, ZipError> {
let writer = self.inner.get_plain();
let mut version_needed = 10;
let central_start = writer.stream_position()?;
for file in self.files.values() {
write_central_directory_header(writer, file)?;
version_needed = version_needed.max(file.version_needed());
}
let central_size = writer.stream_position()? - central_start;
@ -1409,8 +1413,8 @@ impl<W: Write + Seek> ZipWriter<W> {
|| central_size.max(central_start) > spec::ZIP64_BYTES_THR
{
let zip64_footer = spec::Zip64CentralDirectoryEnd {
version_made_by: DEFAULT_VERSION as u16,
version_needed_to_extract: DEFAULT_VERSION as u16,
version_made_by: version_needed.max(DEFAULT_VERSION as u16),
version_needed_to_extract: version_needed,
disk_number: 0,
disk_with_central_directory: 0,
number_of_files_on_this_disk: self.files.len() as u64,
@ -1807,11 +1811,12 @@ fn write_central_directory_header<T: Write>(writer: &mut T, file: &ZipFileData)
// central file header signature
writer.write_u32_le(spec::CENTRAL_DIRECTORY_HEADER_SIGNATURE)?;
let version_needed = file.version_needed();
// version made by
let version_made_by = (file.system as u16) << 8 | (file.version_made_by as u16);
let version_made_by = (file.system as u16) << 8 | (file.version_made_by as u16).max(version_needed);
writer.write_u16_le(version_made_by)?;
// version needed to extract
writer.write_u16_le(file.version_needed())?;
writer.write_u16_le(version_needed)?;
// general puprose bit flag
let is_utf8 = std::str::from_utf8(&file.file_name_raw).is_ok();
let is_ascii = file.file_name_raw.is_ascii();