clean-room implementation of a XAR unarchiver

• Header
  • Magic
  • Header size
  • Version
  • TOC length (compressed)
  • TOC length (uncompressed)
  • Checksum algorithm
    • None
    • SHA1
    • MD5
• TOC
  • Extraction
  • Parsing
  • Checksum validation
• Heap
  • Extraction
    • gzip/zlib
    • bzip2
  • Checksum validation
• File Metadata

• archive info
• file listing
• checksum validation
• decompression

Usage: czar [options] <xar_file> Options: --strict Fail extraction if any checksum validation fails --no-extract Only validate checksums, don't extract files --help, -h Show this help message 

Files are extracted to ./<xar_file>.extracted/

# Extract archive with checksum validation ./czar archive.xar # Validate checksums only (no extraction) ./czar --no-extract archive.xar # Strict mode - fail if any checksum is invalid ./czar --strict archive.xar

This project, initially authored by Mara Robin Broda in 2018, is licensed under the GNU Lesser General Public License v3.0