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# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You 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.
import logging
import os
import pprint
import tempfile
import zipfile
import requests
from vnfsdk_pkgtools.packager import manifest
from vnfsdk_pkgtools.packager import toscameta
from vnfsdk_pkgtools.packager import utils
LOG = logging.getLogger(__name__)
def write(source, entry, destination, args):
source = os.path.expanduser(source)
destination = os.path.expanduser(destination)
utils.check_file_dir(root=source,
entry='',
msg='Please specify the service template directory.',
check_dir=True)
utils.check_file_dir(root='',
entry=destination,
msg='Please provide a path to where the CSAR should be created.',
check_for_non=True)
utils.check_file_dir(root=source,
entry=toscameta.META_FILE,
msg='This commands generates a meta file for you.'
'Please remove the existing metafile.',
check_for_non=True)
if args.sol241:
metadatacls = toscameta.ToscaMeta241
else:
metadatacls = toscameta.ToscaMeta261
metadata = metadatacls(source, args.entry, args.manifest,
args.history, args.licenses,
args.tests, args.certificate)
if args.manifest:
manifest_file = manifest.Manifest(source, args.manifest, args.sol241)
manifest_file_full_path = os.path.join(source, args.manifest)
elif args.certificate or args.digest:
raise ValueError("Must specify manifest file if certificate or digest is specified")
else:
manifest_file = None
manifest_file_full_path = None
if args.certificate:
if not args.privkey:
raise ValueError('Need private key file for signing')
utils.check_file_dir(root='',
entry=args.privkey,
msg='Please specify a valid private key file.',
check_dir=False)
LOG.debug('Compressing root directory to ZIP')
with zipfile.ZipFile(destination, 'w', zipfile.ZIP_DEFLATED) as f:
for root, dirs, files in os.walk(source):
# add dir entries
for dir in dirs:
dir_full_path = os.path.join(root, dir)
dir_relative_path = os.path.relpath(dir_full_path, source) + os.sep
LOG.debug('Writing to archive: {0}'.format(dir_relative_path))
f.write(dir_full_path + os.sep, dir_relative_path)
for file in files:
file_full_path = os.path.join(root, file)
# skip manifest file here in case we need to generate digest
if file_full_path != manifest_file_full_path:
file_relative_path = os.path.relpath(file_full_path, source)
LOG.debug('Writing to archive: {0}'.format(file_relative_path))
f.write(file_full_path, file_relative_path)
if manifest_file:
LOG.debug('Update file digest: {0}'.format(file_relative_path))
manifest_file.add_file(file_relative_path, args.digest)
if manifest_file:
LOG.debug('Update manifest file to temporary file')
manifest_file_full_path = manifest_file.update_to_file(True)
if args.certificate and args.privkey:
LOG.debug('calculate signature')
manifest_file.signature = utils.sign(msg_file=manifest_file_full_path,
cert_file=os.path.join(source, args.certificate),
key_file=args.privkey)
# write cms into it
manifest_file_full_path = manifest_file.update_to_file(True)
LOG.debug('Writing to archive: {0}'.format(args.manifest))
f.write(manifest_file_full_path, args.manifest)
LOG.debug('Writing new metadata file to {0}'.format(toscameta.META_FILE))
f.writestr(toscameta.META_FILE, metadata.dump_as_string())
class _CSARReader(object):
def __init__(self, source, destination, no_verify_cert=True):
if os.path.isdir(destination) and os.listdir(destination):
raise ValueError('{0} already exists and is not empty. '
'Please specify the location where the CSAR '
'should be extracted.'.format(destination))
downloaded_csar = '://' in source
if downloaded_csar:
file_descriptor, download_target = tempfile.mkstemp()
os.close(file_descriptor)
self._download(source, download_target)
source = download_target
self.source = os.path.expanduser(source)
self.destination = os.path.expanduser(destination)
self.metadata = None
self.manifest = None
try:
if not os.path.exists(self.source):
raise ValueError('{0} does not exists. Please specify a valid CSAR path.'
.format(self.source))
if not zipfile.is_zipfile(self.source):
raise ValueError('{0} is not a valid CSAR.'.format(self.source))
self._extract()
self._read_metadata()
self._validate(no_verify_cert)
finally:
if downloaded_csar:
os.remove(self.source)
@property
def created_by(self):
return self.metadata.created_by
@property
def csar_version(self):
return self.metadata.csar_version
@property
def meta_file_version(self):
return self.metadata.meta_file_version
@property
def entry_definitions(self):
return self.metadata.entry_definitions
@property
def entry_definitions_yaml(self):
with open(os.path.join(self.destination, self.entry_definitions)) as f:
return yaml.safe_load(f)
@property
def entry_manifest_file(self):
return self.metadata.entry_manifest_file
@property
def entry_history_file(self):
return self.metadata.entry_history_file
@property
def entry_tests_dir(self):
return self.metadata.entry_tests_dir
@property
def entry_licenses_dir(self):
return self.metadata.entry_licenses_dir
@property
def entry_certificate_file(self):
return self.metadata.entry_certificate_file
def _extract(self):
LOG.debug('Extracting CSAR contents')
if not os.path.exists(self.destination):
os.mkdir(self.destination)
with zipfile.ZipFile(self.source) as f:
f.extractall(self.destination)
LOG.debug('CSAR contents successfully extracted')
def _read_metadata(self):
self.metadata = toscameta.create_from_file(self.destination)
def _validate(self, no_verify_cert):
LOG.debug('CSAR entry definitions: {0}'.format(self.entry_definitions))
LOG.debug('CSAR manifest file: {0}'.format(self.entry_manifest_file))
LOG.debug('CSAR change history file: {0}'.format(self.entry_history_file))
LOG.debug('CSAR tests directory: {0}'.format(self.entry_tests_dir))
LOG.debug('CSAR licenses directory: {0}'.format(self.entry_licenses_dir))
LOG.debug('CSAR certificate file: {0}'.format(self.entry_certificate_file))
if self.entry_manifest_file:
self.manifest = manifest.Manifest(self.destination,
self.entry_manifest_file)
if(self.entry_certificate_file):
tmp_manifest = self.manifest.save_to_temp_without_cms()
utils.verify(tmp_manifest,
os.path.join(self.destination, self.entry_certificate_file),
self.manifest.signature,
no_verify_cert)
os.unlink(tmp_manifest)
def _download(self, url, target):
response = requests.get(url, stream=True)
if response.status_code != 200:
raise ValueError('Server at {0} returned a {1} status code'
.format(url, response.status_code))
LOG.info('Downloading {0} to {1}'.format(url, target))
with open(target, 'wb') as f:
for chunk in response.iter_content(chunk_size=8192):
if chunk:
f.write(chunk)
def read(source, destination, no_verify_cert=False):
return _CSARReader(source=source,
destination=destination,
no_verify_cert=no_verify_cert)
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