65 lines
2.3 KiB
Python
65 lines
2.3 KiB
Python
# -*- coding: utf-8 -*- #
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# Copyright 2020 Google LLC. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Helpers for dealing with storage buckets."""
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import unicode_literals
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from googlecloudsdk.api_lib.storage import storage_api
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from googlecloudsdk.api_lib.storage import storage_util
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from googlecloudsdk.calliope import exceptions
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from googlecloudsdk.core import log
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def _BucketAllowsPublicObjectReads(bucket):
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return any([acl.entity.lower() == 'allusers' and acl.role.lower() == 'reader'
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for acl in bucket.defaultObjectAcl])
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def ValidateBucketForCertificateAuthority(bucket_name):
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"""Validates that a user-specified bucket can be used with a Private CA.
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Args:
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bucket_name: The name of the GCS bucket to validate.
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Returns:
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A BucketReference wrapping the given bucket name.
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Raises:
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InvalidArgumentException: when the given bucket can't be used with a CA.
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"""
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messages = storage_util.GetMessages()
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client = storage_api.StorageClient(messages=messages)
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try:
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bucket = client.GetBucket(
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bucket_name,
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messages.StorageBucketsGetRequest.ProjectionValueValuesEnum.full)
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if not _BucketAllowsPublicObjectReads(bucket):
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# Show a warning but don't fail, since this could be intentional.
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log.warning(
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'The specified bucket does not publicly expose new objects by '
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'default, so some clients may not be able to access the CA '
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'certificate or CRLs. For more details, see '
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'https://cloud.google.com/storage/docs/access-control/making-data-public'
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)
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return storage_util.BucketReference(bucket_name)
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except storage_api.BucketNotFoundError:
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raise exceptions.InvalidArgumentException(
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'gcs-bucket', 'The given bucket does not exist.')
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