release/util.py

# Copyright (C) 2020 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Random utility code for release tools."""

import os
import re
import subprocess
import sys


assert sys.version_info >= (3, 6), "This module requires Python 3.6+"


TOPDIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
HOMEDIR = os.path.expanduser("~")


# These are the release keys we sign with.
KEYID_DSA = "8BB9AD793E8E6153AF0F9A4416530D5E920F5C65"
KEYID_RSA = "A34A13BE8E76BFF46A0C022DA2E75A824AAB9624"
KEYID_ECC = "E1F9040D7A3F6DAFAC897CD3D3B95DA243E48A39"


def cmdstr(cmd):
    """Get a nicely quoted shell command."""
    ret = []
    for arg in cmd:
        if not re.match(r"^[a-zA-Z0-9/_.=-]+$", arg):
            arg = f'"{arg}"'
        ret.append(arg)
    return " ".join(ret)


def run(opts, cmd, check=True, **kwargs):
    """Helper around subprocess.run to include logging."""
    print("+", cmdstr(cmd))
    if opts.dryrun:
        cmd = ["true", "--"] + cmd
    try:
        return subprocess.run(cmd, check=check, **kwargs)
    except subprocess.CalledProcessError as e:
        print(f"aborting: {e}", file=sys.stderr)
        sys.exit(1)


def import_release_key(opts):
    """Import the public key of the official release repo signing key."""
    # Extract the key from our repo launcher.
    launcher = getattr(opts, "launcher", os.path.join(TOPDIR, "repo"))
    print(f'Importing keys from "{launcher}" launcher script')
    with open(launcher, encoding="utf-8") as fp:
        data = fp.read()

    keys = re.findall(
        r"\n-----BEGIN PGP PUBLIC KEY BLOCK-----\n[^-]*"
        r"\n-----END PGP PUBLIC KEY BLOCK-----\n",
        data,
        flags=re.M,
    )
    run(opts, ["gpg", "--import"], input="\n".join(keys).encode("utf-8"))

    print("Marking keys as fully trusted")
    run(
        opts,
        ["gpg", "--import-ownertrust"],
        input=f"{KEYID_DSA}:6:\n".encode("utf-8"),
    )