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src/pxar/decoder.rs: implement dump_archive

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use this to debug archive problems ...
This commit is contained in:
Dietmar Maurer
2019-03-14 13:10:27 +01:00
parent 8968258b66
commit 40360fde6e
2 changed files with 95 additions and 44 deletions
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40
src/bin/pxar.rs
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@ -84,44 +84,18 @@ fn dump_archive(
) -> Result<Value, Error> {
let archive = tools::required_string_param(&param, "archive")?;
let mut file = std::fs::File::open(archive)?;
let file = std::fs::File::open(archive)?;
println!("PXAR {}", archive);
let mut reader = std::io::BufReader::new(file);
let mut buffer = [0u8; 16];
let mut decoder = PxarDecoder::new(&mut reader);
let mut nesting = 0;
let stdout = std::io::stdout();
let mut out = stdout.lock();
loop {
file.read_exact(&mut buffer)?;
println!("PXAR dump: {}", archive);
let header = map_struct::<CaFormatHeader>(&mut buffer)?;
println!("Type: {:016x}", header.htype);
println!("Size: {}", header.size);
let mut rest = vec![0u8; (header.size as usize) - 16];
file.read_exact(&mut rest)?;
if header.htype == CA_FORMAT_FILENAME {
let name = read_os_string(&rest);
let hash = compute_goodbye_hash(&rest[..rest.len()-1]);
println!("Name: {:?} {:016x}", name, hash);
}
if header.htype == CA_FORMAT_ENTRY {
let entry = map_struct::<CaFormatEntry>(&mut rest)?;
println!("Mode: {:08x} {:08x}", entry.mode, (entry.mode as u32) & libc::S_IFDIR);
if ((entry.mode as u32) & libc::S_IFMT) == libc::S_IFDIR {
nesting += 1;
}
}
if header.htype == CA_FORMAT_GOODBYE {
nesting -= 1;
print_goodby_entries(&rest)?;
if nesting == 0 { break; }
}
}
decoder.dump_archive(&mut out);
Ok(Value::Null)
}