101 lines
No EOL
3.2 KiB
Rust
101 lines
No EOL
3.2 KiB
Rust
#![no_main]
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use std::cell::RefCell;
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use libfuzzer_sys::fuzz_target;
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use arbitrary::Arbitrary;
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use std::io::{Cursor, Read, Seek, Write};
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use std::path::{PathBuf};
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#[derive(Arbitrary,Debug)]
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pub struct File {
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pub name: String,
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pub contents: Vec<Vec<u8>>
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}
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#[derive(Arbitrary,Debug)]
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pub enum BasicFileOperation {
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WriteNormalFile {
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file: File,
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options: zip_next::write::FileOptions,
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},
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WriteDirectory {
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name: String,
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options: zip_next::write::FileOptions,
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},
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WriteSymlink {
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name: String,
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target: Box<PathBuf>,
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options: zip_next::write::FileOptions,
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},
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ShallowCopy {
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base: Box<FileOperation>,
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new_name: String,
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},
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DeepCopy {
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base: Box<FileOperation>,
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new_name: String,
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}
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}
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#[derive(Arbitrary,Debug)]
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pub struct FileOperation {
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basic: BasicFileOperation,
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reopen: bool,
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}
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impl FileOperation {
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pub fn get_name(&self) -> String {
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match &self.basic {
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BasicFileOperation::WriteNormalFile {file, ..} => &file.name,
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BasicFileOperation::WriteDirectory {name, ..} => name,
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BasicFileOperation::WriteSymlink {name, ..} => name,
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BasicFileOperation::ShallowCopy {new_name, ..} => new_name,
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BasicFileOperation::DeepCopy {new_name, ..} => new_name
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}.to_owned()
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}
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}
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fn do_operation<T>(writer: &mut RefCell<zip_next::ZipWriter<T>>,
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operation: FileOperation) -> Result<(), Box<dyn std::error::Error>>
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where T: Read + Write + Seek {
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match operation.basic {
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BasicFileOperation::WriteNormalFile {file, mut options, ..} => {
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if file.contents.iter().map(Vec::len).sum::<usize>() >= u32::MAX as usize {
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options = options.large_file(true);
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}
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writer.borrow_mut().start_file(file.name.to_owned(), options)?;
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for chunk in &file.contents {
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writer.borrow_mut().write_all(chunk.as_slice())?;
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}
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}
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BasicFileOperation::WriteDirectory {name, options, ..} => {
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writer.borrow_mut().add_directory(name, options)?;
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}
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BasicFileOperation::WriteSymlink {name, target, options, ..} => {
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writer.borrow_mut().add_symlink(name, target.to_string_lossy(), options)?;
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}
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BasicFileOperation::ShallowCopy {base, ref new_name, .. } => {
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let base_name = base.get_name();
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do_operation(writer, *base)?;
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writer.borrow_mut().shallow_copy_file(&base_name, new_name)?;
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}
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BasicFileOperation::DeepCopy {base, ref new_name, .. } => {
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let base_name = base.get_name();
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do_operation(writer, *base)?;
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writer.borrow_mut().deep_copy_file(&base_name, new_name)?;
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}
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}
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if operation.reopen {
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let new_writer = zip_next::ZipWriter::new_append(writer.borrow_mut().finish().unwrap()).unwrap();
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*writer = new_writer.into();
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}
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Ok(())
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}
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fuzz_target!(|data: Vec<FileOperation>| {
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let mut writer = RefCell::new(zip_next::ZipWriter::new(Cursor::new(Vec::new())));
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for operation in data {
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let _ = do_operation(&mut writer, operation);
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}
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let _ = zip_next::ZipArchive::new(writer.borrow_mut().finish().unwrap());
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}); |