| |
| """Pack the agent's proof into one file for the verifier. |
| |
| Harbor runs this as a [[verifier.collect]] hook in the agent's sandbox after the agent finishes. |
| It clears /logs/artifacts and writes /logs/artifacts/submission.tar holding only regular |
| `Submission.lean` and `Submission/**.lean` files. Symlinks and other entries are skipped, never |
| followed, so only one plain file crosses to the verifier sandbox. |
| |
| The agent's sandbox is untrusted, so the verifier re-checks every entry of the archive. This step |
| only keeps the transfer small and free of links. |
| """ |
|
|
| from __future__ import annotations |
|
|
| import os |
| import shutil |
| import stat |
| import tarfile |
| from pathlib import Path |
|
|
| WORKSPACE = Path("/workspace") |
| OUT_DIR = Path("/logs/artifacts") |
| MAX_TOTAL_BYTES = 768 << 20 |
|
|
|
|
| def clear(directory: Path) -> None: |
| directory.mkdir(parents=True, exist_ok=True) |
| for entry in directory.iterdir(): |
| if entry.is_dir() and not entry.is_symlink(): |
| shutil.rmtree(entry) |
| else: |
| entry.unlink() |
|
|
|
|
| def regular(path: Path) -> bool: |
| try: |
| return stat.S_ISREG(path.lstat().st_mode) |
| except OSError: |
| return False |
|
|
|
|
| def main() -> None: |
| clear(OUT_DIR) |
| tmp = OUT_DIR / "submission.tar.part" |
| total = 0 |
| with tarfile.open(tmp, "w", format=tarfile.PAX_FORMAT) as tar: |
| root = WORKSPACE / "Submission.lean" |
| if regular(root): |
| total += root.lstat().st_size |
| if total > MAX_TOTAL_BYTES: |
| raise SystemExit("submission exceeds the size limit") |
| tar.add(root, arcname="Submission.lean", recursive=False) |
| tree = WORKSPACE / "Submission" |
| if tree.is_dir() and not tree.is_symlink(): |
| for dirpath, dirnames, filenames in os.walk(tree, followlinks=False): |
| dirnames[:] = [d for d in dirnames if not (Path(dirpath) / d).is_symlink()] |
| for name in sorted(filenames): |
| path = Path(dirpath) / name |
| if not name.endswith(".lean") or not regular(path): |
| continue |
| total += path.lstat().st_size |
| if total > MAX_TOTAL_BYTES: |
| raise SystemExit("submission exceeds the size limit") |
| tar.add(path, arcname=str(path.relative_to(WORKSPACE)), recursive=False) |
| tmp.rename(OUT_DIR / "submission.tar") |
| print(f"packed {total} bytes") |
|
|
|
|
| if __name__ == "__main__": |
| main() |
|
|
