Datasets:
File size: 2,121 Bytes
6942796 | 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 51 52 53 54 55 56 57 58 59 | #!/usr/bin/env python3
"""Fetch the 20 hash-locked PLOS/CRS inputs used by clean_source_pack.py."""
from __future__ import annotations
import hashlib
import json
import os
from pathlib import Path
import urllib.request
SCRIPT_ROOT = Path(__file__).resolve().parent
ROOT = Path(os.environ.get("FRESH10_SOURCE_PACK", SCRIPT_ROOT / "source_pack"))
DESCRIPTOR = SCRIPT_ROOT / "source_pack.json"
USER_AGENT = "fresh10-builder/1.0 (+https://huggingface.co/datasets/quintic/fresh10)"
def digest(data: bytes) -> str:
return hashlib.sha256(data).hexdigest()
def contained(root: Path, relative: str) -> Path:
candidate = (root / relative).resolve()
resolved_root = root.resolve()
if candidate != resolved_root and resolved_root not in candidate.parents:
raise RuntimeError(f"unsafe source-pack path: {relative!r}")
return candidate
def main() -> None:
payload = json.loads(DESCRIPTOR.read_text(encoding="utf-8"))
documents = payload.get("documents")
if not isinstance(documents, list) or len(documents) != 20:
raise RuntimeError("source_pack.json must describe exactly 20 documents")
for document in documents:
target = contained(ROOT, document["raw_file"])
expected = document["raw_sha256"]
if target.is_file() and digest(target.read_bytes()) == expected:
continue
request = urllib.request.Request(document["source_url"], headers={"User-Agent": USER_AGENT})
with urllib.request.urlopen(request, timeout=120) as response:
data = response.read()
actual = digest(data)
if actual != expected:
raise RuntimeError(
f"{document['id']}: upstream bytes changed "
f"(expected {expected}, got {actual}); refusing an unreviewed rebuild"
)
target.parent.mkdir(parents=True, exist_ok=True)
temporary = target.with_suffix(target.suffix + ".tmp")
temporary.write_bytes(data)
temporary.replace(target)
print(f"verified {len(documents)} raw source-pack files under {ROOT}")
if __name__ == "__main__":
main()
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