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# Copyright 2013 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Signs and aligns an APK."""
import argparse
import logging
import shutil
import subprocess
import tempfile
from util import build_utils
def FinalizeApk(apksigner_path, zipalign_path, unsigned_apk_path,
final_apk_path, key_path, key_passwd, key_name,
min_sdk_version):
# Use a tempfile so that Ctrl-C does not leave the file with a fresh mtime
# and a corrupted state.
with tempfile.NamedTemporaryFile() as staging_file:
if zipalign_path:
# v2 signing requires that zipalign happen first.
logging.debug('Running zipalign')
subprocess.check_output([
zipalign_path, '-p', '-f', '4', unsigned_apk_path, staging_file.name
])
signer_input_path = staging_file.name
else:
signer_input_path = unsigned_apk_path
sign_cmd = [
build_utils.JAVA_PATH,
'-jar',
apksigner_path,
'sign',
'--in',
signer_input_path,
'--out',
staging_file.name,
'--ks',
key_path,
'--ks-key-alias',
key_name,
'--ks-pass',
'pass:' + key_passwd,
]
# V3 signing adds security niceties, which are irrelevant for local builds.
sign_cmd += ['--v3-signing-enabled', 'false']
if min_sdk_version >= 24:
# Disable v1 signatures when v2 signing can be used (it's much faster).
# By default, both v1 and v2 signing happen.
sign_cmd += ['--v1-signing-enabled', 'false']
else:
# Force SHA-1 (makes signing faster; insecure is fine for local builds).
# Leave v2 signing enabled since it verifies faster on device when
# supported.
sign_cmd += ['--min-sdk-version', '1']
logging.debug('Signing apk')
subprocess.check_call(sign_cmd)
shutil.move(staging_file.name, final_apk_path)
staging_file.delete = False
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