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80ef3b2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 | #!/usr/bin/env python3
"""Verify final paper-output checksums."""
from __future__ import annotations
import hashlib
from pathlib import Path
ROOT = Path(__file__).resolve().parents[1]
MANIFEST = ROOT / "artifacts" / "manifests" / "paper_outputs.sha256"
def sha256(path: Path) -> str:
digest = hashlib.sha256()
with path.open("rb") as fh:
for chunk in iter(lambda: fh.read(1024 * 1024), b""):
digest.update(chunk)
return digest.hexdigest()
def main() -> None:
issues: list[str] = []
for line_no, line in enumerate(MANIFEST.read_text(encoding="utf-8").splitlines(), start=1):
if not line.strip():
continue
try:
expected, rel = line.split(None, 1)
except ValueError:
issues.append(f"bad checksum line {line_no}: {line!r}")
continue
path = ROOT / rel.strip()
if not path.exists():
issues.append(f"missing output listed in checksum manifest: {rel}")
continue
actual = sha256(path)
if actual != expected:
issues.append(f"checksum mismatch for {rel}: expected {expected}, got {actual}")
if issues:
print("Paper-output checksum check failed:")
for issue in issues:
print(f"- {issue}")
raise SystemExit(1)
print("Paper-output checksum check passed.")
if __name__ == "__main__":
main()
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