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#!/usr/bin/env python
#
# Copyright (C) 2019 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.
"""
Signs a standalone APEX file.
Usage: sign_apex [flags] input_apex_file output_apex_file
--avbtool <avbtool>
Optional flag that specifies the AVB tool to use. Defaults to `avbtool`.
--container_key <key>
Mandatory flag that specifies the container signing key.
--payload_key <key>
Mandatory flag that specifies the payload signing key.
--payload_extra_args <args>
Optional flag that specifies any extra args to be passed to payload signer
(e.g. --payload_extra_args="--signing_helper_with_files /path/to/helper").
"""
import logging
import shutil
import sys
import apex_utils
import common
logger = logging.getLogger(__name__)
def SignApexFile(avbtool, apex_file, payload_key, container_key,
signing_args=None):
"""Signs the given apex file."""
with open(apex_file, 'rb') as input_fp:
apex_data = input_fp.read()
return apex_utils.SignApex(
avbtool,
apex_data,
payload_key=payload_key,
container_key=container_key,
container_pw=None,
codename_to_api_level_map=None,
signing_args=signing_args)
def main(argv):
options = {}
def option_handler(o, a):
if o == '--avbtool':
options['avbtool'] = a
elif o == '--container_key':
# Strip the suffix if any, as common.SignFile expects no suffix.
DEFAULT_CONTAINER_KEY_SUFFIX = '.x509.pem'
if a.endswith(DEFAULT_CONTAINER_KEY_SUFFIX):
a = a[:-len(DEFAULT_CONTAINER_KEY_SUFFIX)]
options['container_key'] = a
elif o == '--payload_key':
options['payload_key'] = a
elif o == '--payload_extra_args':
options['payload_extra_args'] = a
else:
return False
return True
args = common.ParseOptions(
argv, __doc__,
extra_opts='',
extra_long_opts=[
'avbtool=',
'container_key=',
'payload_extra_args=',
'payload_key=',
],
extra_option_handler=option_handler)
if (len(args) != 2 or 'container_key' not in options or
'payload_key' not in options):
common.Usage(__doc__)
sys.exit(1)
common.InitLogging()
signed_apex = SignApexFile(
options.get('avbtool', 'avbtool'),
args[0],
options['payload_key'],
options['container_key'],
options.get('payload_extra_args'))
shutil.copyfile(signed_apex, args[1])
logger.info("done.")
if __name__ == '__main__':
try:
main(sys.argv[1:])
except common.ExternalError:
logger.exception("\n ERROR:\n")
sys.exit(1)
finally:
common.Cleanup()
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