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linux/update-hardened.py: reformat

$ isort --multi-line=3 --trailing-comma --force-grid-wrap=0 --use-parentheses …
$ black --line-length=80 …

(per the black documentation)
This commit is contained in:
Emily 2020-04-26 19:28:24 +01:00
parent 4cad49dc1a
commit 83c4ac2eb3

View file

@ -3,60 +3,68 @@
# This is automatically called by ./update.sh.
import re
import json
import sys
import os.path
from glob import glob
import re
import subprocess
import sys
from glob import glob
from tempfile import TemporaryDirectory
from github import Github
HERE = os.path.dirname(os.path.realpath(__file__))
HARDENED_GITHUB_REPO = 'anthraxx/linux-hardened'
HARDENED_TRUSTED_KEY = os.path.join(HERE, 'anthraxx.asc')
HARDENED_PATCHES_PATH = os.path.join(HERE, 'hardened-patches.json')
HARDENED_GITHUB_REPO = "anthraxx/linux-hardened"
HARDENED_TRUSTED_KEY = os.path.join(HERE, "anthraxx.asc")
HARDENED_PATCHES_PATH = os.path.join(HERE, "hardened-patches.json")
MIN_KERNEL_VERSION = [4, 14]
def run(*args, **kwargs):
try:
return subprocess.run(
args, **kwargs,
check=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
args,
**kwargs,
check=True,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
)
except subprocess.CalledProcessError as err:
print(
f'error: `{err.cmd}` failed unexpectedly\n'
f'status code: {err.returncode}\n'
f"error: `{err.cmd}` failed unexpectedly\n"
f"status code: {err.returncode}\n"
f'stdout:\n{err.stdout.decode("utf-8").strip()}\n'
f'stderr:\n{err.stderr.decode("utf-8").strip()}',
file=sys.stderr,
)
sys.exit(1)
def nix_prefetch_url(url):
output = run('nix-prefetch-url', '--print-path', url).stdout
return output.decode('utf-8').strip().split('\n')
output = run("nix-prefetch-url", "--print-path", url).stdout
return output.decode("utf-8").strip().split("\n")
def verify_openpgp_signature(*, name, trusted_key, sig_path, data_path):
with TemporaryDirectory(suffix='.nixpkgs-gnupg-home') as gnupg_home:
run('gpg', '--homedir', gnupg_home, '--import', trusted_key)
keyring = os.path.join(gnupg_home, 'pubring.kbx')
with TemporaryDirectory(suffix=".nixpkgs-gnupg-home") as gnupg_home:
run("gpg", "--homedir", gnupg_home, "--import", trusted_key)
keyring = os.path.join(gnupg_home, "pubring.kbx")
try:
subprocess.run(
('gpgv', '--keyring', keyring, sig_path, data_path),
check=True, stderr=subprocess.PIPE,
("gpgv", "--keyring", keyring, sig_path, data_path),
check=True,
stderr=subprocess.PIPE,
)
return True
except subprocess.CalledProcessError as err:
print(
f'error: signature for {name} failed to verify!',
f"error: signature for {name} failed to verify!",
file=sys.stderr,
)
print(err.stderr.decode('utf-8'), file=sys.stderr, end='')
print(err.stderr.decode("utf-8"), file=sys.stderr, end="")
return False
def fetch_patch(*, name, release):
def find_asset(filename):
try:
@ -68,12 +76,12 @@ def fetch_patch(*, name, release):
except StopIteration:
raise KeyError(filename)
patch_filename = f'{name}.patch'
patch_filename = f"{name}.patch"
try:
patch_url = find_asset(patch_filename)
sig_url = find_asset(patch_filename + '.sig')
sig_url = find_asset(patch_filename + ".sig")
except KeyError:
print(f'error: {patch_filename}{{,.sig}} not present', file=sys.stderr)
print(f"error: {patch_filename}{{,.sig}} not present", file=sys.stderr)
return None
sha256, patch_path = nix_prefetch_url(patch_url)
@ -88,59 +96,71 @@ def fetch_patch(*, name, release):
return None
return {
'name': patch_filename,
'url': patch_url,
'sha256': sha256,
"name": patch_filename,
"url": patch_url,
"sha256": sha256,
}
def parse_version(version_str):
version = []
for component in version_str.split('.'):
for component in version_str.split("."):
try:
version.append(int(component))
except ValueError:
version.append(component)
return version
def version_string(version):
return '.'.join(str(component) for component in version)
return ".".join(str(component) for component in version)
def major_kernel_version_key(kernel_version):
return version_string(kernel_version[:-1])
def commit_patches(*, kernel_key, message):
with open(HARDENED_PATCHES_PATH + '.new', 'w') as new_patches_file:
with open(HARDENED_PATCHES_PATH + ".new", "w") as new_patches_file:
json.dump(patches, new_patches_file, indent=4, sort_keys=True)
new_patches_file.write('\n')
os.rename(HARDENED_PATCHES_PATH + '.new', HARDENED_PATCHES_PATH)
message = f'linux/hardened-patches/{kernel_key}: {message}'
new_patches_file.write("\n")
os.rename(HARDENED_PATCHES_PATH + ".new", HARDENED_PATCHES_PATH)
message = f"linux/hardened-patches/{kernel_key}: {message}"
print(message)
if os.environ.get('COMMIT'):
if os.environ.get("COMMIT"):
run(
'git', '-C', HERE, 'commit', f'--message={message}',
'hardened-patches.json',
"git",
"-C",
HERE,
"commit",
f"--message={message}",
"hardened-patches.json",
)
# Load the existing patches.
with open(HARDENED_PATCHES_PATH) as patches_file:
patches = json.load(patches_file)
NIX_VERSION_RE = re.compile(r'''
NIX_VERSION_RE = re.compile(
r"""
\s* version \s* =
\s* " (?P<version> [^"]*) "
\s* ; \s* \n
''', re.VERBOSE)
""",
re.VERBOSE,
)
# Get the set of currently packaged kernel versions.
kernel_versions = {}
for filename in os.listdir(HERE):
filename_match = re.fullmatch(r'linux-(\d+)\.(\d+)\.nix', filename)
filename_match = re.fullmatch(r"linux-(\d+)\.(\d+)\.nix", filename)
if filename_match:
with open(os.path.join(HERE, filename)) as nix_file:
for nix_line in nix_file:
match = NIX_VERSION_RE.fullmatch(nix_line)
if match:
kernel_version = parse_version(match.group('version'))
kernel_version = parse_version(match.group("version"))
if kernel_version < MIN_KERNEL_VERSION:
continue
kernel_key = major_kernel_version_key(kernel_version)
@ -148,9 +168,9 @@ for filename in os.listdir(HERE):
# Remove patches for unpackaged kernel versions.
for kernel_key in sorted(patches.keys() - kernel_versions.keys()):
commit_patches(kernel_key=kernel_key, message='remove')
commit_patches(kernel_key=kernel_key, message="remove")
g = Github(os.environ.get('GITHUB_TOKEN'))
g = Github(os.environ.get("GITHUB_TOKEN"))
repo = g.get_repo(HARDENED_GITHUB_REPO)
failures = False
@ -171,8 +191,8 @@ for release in repo.get_releases():
continue
release_info = {
'version': version,
'release': release,
"version": version,
"release": release,
}
if kernel_version == packaged_kernel_version:
@ -182,22 +202,24 @@ for release in repo.get_releases():
# skipping patches for kernels newer than the packaged one.
if kernel_version > packaged_kernel_version:
continue
elif (kernel_key not in releases or
releases[kernel_key]['version'] < version):
elif (
kernel_key not in releases
or releases[kernel_key]["version"] < version
):
releases[kernel_key] = release_info
# Update hardened-patches.json for each release.
for kernel_key, release_info in releases.items():
release = release_info['release']
version = release_info['version']
release = release_info["release"]
version = release_info["version"]
version_str = release.tag_name
name = f'linux-hardened-{version_str}'
name = f"linux-hardened-{version_str}"
try:
old_filename = patches[kernel_key]['name']
old_version_str = (old_filename
.replace('linux-hardened-', '')
.replace('.patch', ''))
old_filename = patches[kernel_key]["name"]
old_version_str = old_filename.replace("linux-hardened-", "").replace(
".patch", ""
)
old_version = parse_version(old_version_str)
update = old_version < version
except KeyError:
@ -211,17 +233,17 @@ for kernel_key, release_info in releases.items():
else:
patches[kernel_key] = patch
if old_version:
message = f'{old_version_str} -> {version_str}'
message = f"{old_version_str} -> {version_str}"
else:
message = f'init at {version_str}'
message = f"init at {version_str}"
commit_patches(kernel_key=kernel_key, message=message)
missing_kernel_versions = kernel_versions.keys() - patches.keys()
if missing_kernel_versions:
print(
f'warning: no patches for kernel versions ' +
', '.join(missing_kernel_versions),
f"warning: no patches for kernel versions "
+ ", ".join(missing_kernel_versions),
file=sys.stderr,
)