|
| 1 | +#! /usr/bin/env python3 |
| 2 | + |
| 3 | +""" |
| 4 | +Compare checksums for wheels in :mod:`ensurepip` against the Cheeseshop. |
| 5 | +
|
| 6 | +When GitHub Actions executes the script, output is formatted accordingly. |
| 7 | +https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-a-notice-message |
| 8 | +""" |
| 9 | + |
| 10 | +importhashlib |
| 11 | +importjson |
| 12 | +importos |
| 13 | +importre |
| 14 | +frompathlibimportPath |
| 15 | +fromurllib.requestimporturlopen |
| 16 | + |
| 17 | +PACKAGE_NAMES= ("pip","setuptools") |
| 18 | +ENSURE_PIP_ROOT=Path(__file__).parent.parent.parent/"Lib/ensurepip" |
| 19 | +WHEEL_DIR=ENSURE_PIP_ROOT/"_bundled" |
| 20 | +ENSURE_PIP_INIT_PY_TEXT= (ENSURE_PIP_ROOT/"__init__.py").read_text(encoding="utf-8") |
| 21 | +GITHUB_ACTIONS=os.getenv("GITHUB_ACTIONS")=="true" |
| 22 | + |
| 23 | + |
| 24 | +defprint_notice(file_path:str,message:str)->None: |
| 25 | +ifGITHUB_ACTIONS: |
| 26 | +message=f"::notice file={file_path}::{message}" |
| 27 | +print(message,end="\n\n") |
| 28 | + |
| 29 | + |
| 30 | +defprint_error(file_path:str,message:str)->None: |
| 31 | +ifGITHUB_ACTIONS: |
| 32 | +message=f"::error file={file_path}::{message}" |
| 33 | +print(message,end="\n\n") |
| 34 | + |
| 35 | + |
| 36 | +defverify_wheel(package_name:str)->bool: |
| 37 | +# Find the package on disk |
| 38 | +package_path=next(WHEEL_DIR.glob(f"{package_name}*.whl"),None) |
| 39 | +ifnotpackage_path: |
| 40 | +print_error("",f"Could not find a{package_name} wheel on disk.") |
| 41 | +returnFalse |
| 42 | + |
| 43 | +print(f"Verifying checksum for{package_path}.") |
| 44 | + |
| 45 | +# Find the version of the package used by ensurepip |
| 46 | +package_version_match=re.search( |
| 47 | +f'_{package_name.upper()}_VERSION = "([^"]+)',ENSURE_PIP_INIT_PY_TEXT |
| 48 | + ) |
| 49 | +ifnotpackage_version_match: |
| 50 | +print_error( |
| 51 | +package_path, |
| 52 | +f"No{package_name} version found in Lib/ensurepip/__init__.py.", |
| 53 | + ) |
| 54 | +returnFalse |
| 55 | +package_version=package_version_match[1] |
| 56 | + |
| 57 | +# Get the SHA 256 digest from the Cheeseshop |
| 58 | +try: |
| 59 | +raw_text=urlopen(f"https://pypi.org/pypi/{package_name}/json").read() |
| 60 | +except (OSError,ValueError): |
| 61 | +print_error(package_path,f"Could not fetch JSON metadata for{package_name}.") |
| 62 | +returnFalse |
| 63 | + |
| 64 | +release_files=json.loads(raw_text)["releases"][package_version] |
| 65 | +forrelease_infoinrelease_files: |
| 66 | +ifpackage_path.name!=release_info["filename"]: |
| 67 | +continue |
| 68 | +expected_digest=release_info["digests"].get("sha256","") |
| 69 | +break |
| 70 | +else: |
| 71 | +print_error(package_path,f"No digest for{package_name} found from PyPI.") |
| 72 | +returnFalse |
| 73 | + |
| 74 | +# Compute the SHA 256 digest of the wheel on disk |
| 75 | +actual_digest=hashlib.sha256(package_path.read_bytes()).hexdigest() |
| 76 | + |
| 77 | +print(f"Expected digest:{expected_digest}") |
| 78 | +print(f"Actual digest:{actual_digest}") |
| 79 | + |
| 80 | +ifactual_digest!=expected_digest: |
| 81 | +print_error( |
| 82 | +package_path,f"Failed to verify the checksum of the{package_name} wheel." |
| 83 | + ) |
| 84 | +returnFalse |
| 85 | + |
| 86 | +print_notice( |
| 87 | +package_path, |
| 88 | +f"Successfully verified the checksum of the{package_name} wheel.", |
| 89 | + ) |
| 90 | +returnTrue |
| 91 | + |
| 92 | + |
| 93 | +if__name__=="__main__": |
| 94 | +exit_status=0 |
| 95 | +forpackage_nameinPACKAGE_NAMES: |
| 96 | +ifnotverify_wheel(package_name): |
| 97 | +exit_status=1 |
| 98 | +raiseSystemExit(exit_status) |