mirror of https://github.com/python/cpython
99 lines
3.1 KiB
Python
Executable File
99 lines
3.1 KiB
Python
Executable File
#! /usr/bin/env python3
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"""
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Compare checksums for wheels in :mod:`ensurepip` against the Cheeseshop.
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When GitHub Actions executes the script, output is formatted accordingly.
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https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-a-notice-message
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"""
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import hashlib
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import json
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import os
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import re
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from pathlib import Path
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from urllib.request import urlopen
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PACKAGE_NAMES = ("pip", "setuptools")
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ENSURE_PIP_ROOT = Path(__file__).parent.parent.parent / "Lib/ensurepip"
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WHEEL_DIR = ENSURE_PIP_ROOT / "_bundled"
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ENSURE_PIP_INIT_PY_TEXT = (ENSURE_PIP_ROOT / "__init__.py").read_text(encoding="utf-8")
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GITHUB_ACTIONS = os.getenv("GITHUB_ACTIONS") == "true"
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def print_notice(file_path: str, message: str) -> None:
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if GITHUB_ACTIONS:
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message = f"::notice file={file_path}::{message}"
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print(message, end="\n\n")
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def print_error(file_path: str, message: str) -> None:
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if GITHUB_ACTIONS:
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message = f"::error file={file_path}::{message}"
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print(message, end="\n\n")
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def verify_wheel(package_name: str) -> bool:
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# Find the package on disk
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package_path = next(WHEEL_DIR.glob(f"{package_name}*.whl"), None)
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if not package_path:
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print_error("", f"Could not find a {package_name} wheel on disk.")
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return False
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print(f"Verifying checksum for {package_path}.")
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# Find the version of the package used by ensurepip
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package_version_match = re.search(
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f'_{package_name.upper()}_VERSION = "([^"]+)', ENSURE_PIP_INIT_PY_TEXT
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)
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if not package_version_match:
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print_error(
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package_path,
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f"No {package_name} version found in Lib/ensurepip/__init__.py.",
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)
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return False
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package_version = package_version_match[1]
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# Get the SHA 256 digest from the Cheeseshop
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try:
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raw_text = urlopen(f"https://pypi.org/pypi/{package_name}/json").read()
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except (OSError, ValueError):
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print_error(package_path, f"Could not fetch JSON metadata for {package_name}.")
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return False
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release_files = json.loads(raw_text)["releases"][package_version]
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for release_info in release_files:
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if package_path.name != release_info["filename"]:
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continue
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expected_digest = release_info["digests"].get("sha256", "")
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break
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else:
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print_error(package_path, f"No digest for {package_name} found from PyPI.")
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return False
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# Compute the SHA 256 digest of the wheel on disk
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actual_digest = hashlib.sha256(package_path.read_bytes()).hexdigest()
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print(f"Expected digest: {expected_digest}")
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print(f"Actual digest: {actual_digest}")
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if actual_digest != expected_digest:
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print_error(
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package_path, f"Failed to verify the checksum of the {package_name} wheel."
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)
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return False
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print_notice(
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package_path,
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f"Successfully verified the checksum of the {package_name} wheel.",
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)
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return True
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if __name__ == "__main__":
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exit_status = 0
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for package_name in PACKAGE_NAMES:
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if not verify_wheel(package_name):
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exit_status = 1
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raise SystemExit(exit_status)
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