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allaun
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This squashes all local history (768 commits) onto the scrubbed PR #90 baseline. Individual commits were lost during filter-repo corruption; the working tree content is preserved intact. Build: N/A (working tree state only)
88 lines
2.7 KiB
Python
88 lines
2.7 KiB
Python
#!/usr/bin/env python3
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"""Validate that a derived trinary VM program matches the declared baseline rules."""
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from __future__ import annotations
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import argparse
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import hashlib
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import json
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import sys
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from datetime import datetime, timezone
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from pathlib import Path
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from derive_trinary_program import SCHEMA, derive_payload
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def sha256_file(path: Path) -> str:
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digest = hashlib.sha256()
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with path.open("rb") as handle:
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for chunk in iter(lambda: handle.read(1024 * 1024), b""):
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digest.update(chunk)
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return digest.hexdigest()
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def parse_args() -> argparse.Namespace:
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument("--input", required=True, help="Original input file.")
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parser.add_argument("--program", required=True, help="Derived JSON program to validate.")
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parser.add_argument(
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"--report",
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help="Optional path to write a JSON validation receipt.",
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)
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return parser.parse_args()
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def main() -> int:
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args = parse_args()
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input_path = Path(args.input).resolve()
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program_path = Path(args.program).resolve()
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expected = derive_payload(input_path)
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actual = json.loads(program_path.read_text(encoding="utf-8"))
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failures: list[str] = []
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if actual.get("schema") != SCHEMA:
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failures.append(
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f"schema mismatch: expected {SCHEMA}, got {actual.get('schema')!r}"
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)
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for key in ("input_size_bytes", "input_sha256", "subregisters", "program"):
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if actual.get(key) != expected.get(key):
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failures.append(f"{key} mismatch")
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report = {
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"schema": "trinary_vm_validation_receipt_v1",
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"validated_utc": datetime.now(timezone.utc).isoformat(),
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"input_path": str(input_path),
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"input_sha256": sha256_file(input_path),
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"program_path": str(program_path),
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"program_sha256": sha256_file(program_path),
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"expected_schema": SCHEMA,
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"actual_schema": actual.get("schema"),
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"valid": not failures,
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"failures": failures,
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}
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if args.report:
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Path(args.report).resolve().write_text(
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json.dumps(report, indent=2) + "\n",
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encoding="utf-8",
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)
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if failures:
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print("Derived program validation failed:", file=sys.stderr)
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for failure in failures:
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print(f"- {failure}", file=sys.stderr)
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if args.report:
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print(f"Wrote validation receipt to {Path(args.report).resolve()}", file=sys.stderr)
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return 1
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print("Derived program matches the declared deterministic derivation rules.")
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if args.report:
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print(f"Wrote validation receipt to {Path(args.report).resolve()}")
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return 0
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if __name__ == "__main__":
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raise SystemExit(main())
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