| """Validate this Hugging Face distribution's SHA-256 manifest (standard library only).""" | |
| from pathlib import Path | |
| import hashlib | |
| ROOT = Path(__file__).resolve().parent | |
| def main(): | |
| count = 0 | |
| seen = set() | |
| for line in (ROOT / 'SHA256SUMS.txt').read_text(encoding='utf-8').splitlines(): | |
| if not line.strip(): | |
| continue | |
| digest, name = line.split(' ', 1) | |
| path = (ROOT / name).resolve() | |
| if name in seen or len(digest) != 64 or any(c not in '0123456789abcdef' for c in digest): | |
| raise SystemExit('Invalid or duplicate manifest entry: ' + name) | |
| if not path.is_relative_to(ROOT) or not path.is_file(): | |
| raise SystemExit('Missing file or unsafe path: ' + name) | |
| actual = hashlib.sha256(path.read_bytes()).hexdigest() | |
| if actual != digest: | |
| raise SystemExit('SHA-256 mismatch: ' + name) | |
| seen.add(name) | |
| count += 1 | |
| if not count: | |
| raise SystemExit('Manifest is empty.') | |
| print(f'PASS: {count} distribution file hashes match.') | |
| print('Integrity verifies bytes; it does not certify mathematical correctness.') | |
| if __name__ == '__main__': | |
| main() | |