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

chore: Fix an error caused by not allowing 0xa11e field

Browse source
This commit is contained in:
Chris Hennick 2024-06-13 22:59:02 -07:00
parent 60f7c637e6
commit 32f946e788
No known key found for this signature in database
GPG key ID: DA47AABA4961C509
1 changed files with 38 additions and 22 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

60
src/write.rs
View file

@ -324,28 +324,31 @@ impl ExtendedFileOptions {
"Extra-data field can't exceed u16::MAX bytes",
)));
}
if data.len() < 2 {
return Err(ZipError::Io(io::Error::new(
io::ErrorKind::Other,
"Extra-data field needs 2 tag bytes",
)));
}
parse_single_extra_field(&mut ZipFileData::default(), &mut Cursor::new(data.to_vec()))?;
#[cfg(not(feature = "unreserved"))]
{
let header_id = u16::from_le_bytes([data[0], data[1]]);
if header_id <= 31
|| EXTRA_FIELD_MAPPING
.iter()
.any(|&mapped| mapped == header_id)
{
while !data.is_empty() {
if data.len() < 2 {
return Err(ZipError::Io(io::Error::new(
io::ErrorKind::Other,
format!(
"Extra data header ID {header_id:#06} requires crate feature \"unreserved\"",
),
"Extra-data field needs 2 tag bytes",
)));
}
#[cfg(not(feature = "unreserved"))]
{
let header_id = u16::from_le_bytes([data[0], data[1]]);
if header_id <= 31
|| EXTRA_FIELD_MAPPING
.iter()
.any(|&mapped| mapped == header_id)
{
return Err(ZipError::Io(io::Error::new(
io::ErrorKind::Other,
format!(
"Extra data header ID {header_id:#06} requires crate feature \"unreserved\"",
),
)));
}
}
let len_left = parse_single_extra_field(&mut ZipFileData::default(), &mut Cursor::new(data.to_vec()))?;
data = data[(data.len() - len_left as usize)..].to_owned()
}
Ok(())
}
@ -951,7 +954,7 @@ impl<W: Write + Seek> ZipWriter<W> {
let unaligned_header_bytes = extra_data_end % align;
if unaligned_header_bytes != 0 {
let mut pad_length = (align - unaligned_header_bytes) as usize;
if pad_length < 4 {
while pad_length < 6 {
pad_length += align as usize;
}
// Add an extra field to the extra_data, per APPNOTE 4.6.11
@ -1936,12 +1939,11 @@ fn write_central_zip64_extra_field<T: Write>(writer: &mut T, file: &ZipFileData)
}
#[cfg(not(feature = "unreserved"))]
const EXTRA_FIELD_MAPPING: [u16; 49] = [
const EXTRA_FIELD_MAPPING: [u16; 48] = [
0x0001, 0x0007, 0x0008, 0x0009, 0x000a, 0x000c, 0x000d, 0x000e, 0x000f, 0x0014, 0x0015, 0x0016,
0x0017, 0x0018, 0x0019, 0x0020, 0x0021, 0x0022, 0x0023, 0x0065, 0x0066, 0x4690, 0x07c8, 0x2605,
0x2705, 0x2805, 0x334d, 0x4341, 0x4453, 0x4704, 0x470f, 0x4b46, 0x4c41, 0x4d49, 0x4f4c, 0x5356,
0x5455, 0x554e, 0x5855, 0x6375, 0x6542, 0x7075, 0x756e, 0x7855, 0xa11e, 0xa220, 0xfd4a, 0x9901,
0x9902,
0x5455, 0x554e, 0x5855, 0x6375, 0x6542, 0x7075, 0x756e, 0x7855, 0xa220, 0xfd4a, 0x9901, 0x9902,
];
#[cfg(test)]
@ -2646,4 +2648,18 @@ mod test {
let _ = writer.finish_into_readable()?;
Ok(())
}
#[cfg(feature = "deflate64")]
#[test]
fn test_fuzz_crash_2024_06_13a() -> ZipResult<()> {
use CompressionMethod::Deflate64;
use crate::write::ExtendedFileOptions;
let mut writer = ZipWriter::new(Cursor::new(Vec::new()));
writer.set_flush_on_finish_file(false);
let options = FileOptions { compression_method: Deflate64, compression_level: None, last_modified_time: DateTime::from_date_and_time(2039, 4, 17, 6, 18, 19)?, permissions: None, large_file: true, encrypt_with: None, extended_options: ExtendedFileOptions {extra_data: vec![].into(), central_extra_data: vec![].into()}, alignment: 4, zopfli_buffer_size: None };
writer.add_directory_from_path("", options)?;
let _ = writer.finish_into_readable()?;
Ok(())
}
}