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# Copyright 2013 The Chromium Authors
# 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 logging
import shutil
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,
warnings_as_errors=False):
# 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')
zipalign_cmd = [
zipalign_path, '-p', '-f', '4', unsigned_apk_path, staging_file.name
]
build_utils.CheckOutput(zipalign_cmd,
print_stdout=True,
fail_on_output=warnings_as_errors)
signer_input_path = staging_file.name
else:
signer_input_path = unsigned_apk_path
sign_cmd = build_utils.JavaCmd() + [
'-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')
build_utils.CheckOutput(sign_cmd,
print_stdout=True,
fail_on_output=warnings_as_errors)
shutil.move(staging_file.name, final_apk_path)
staging_file._closer.delete = False # pylint: disable=protected-access
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