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| 1 | +#!/usr/bin/env python |
| 2 | + |
| 3 | +# Copyright 2017 Google, Inc. |
| 4 | +# |
| 5 | +# Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | +# you may not use this file except in compliance with the License. |
| 7 | +# You may obtain a copy of the License at |
| 8 | +# |
| 9 | +# http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | +# |
| 11 | +# Unless required by applicable law or agreed to in writing, software |
| 12 | +# distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | +# See the License for the specific language governing permissions and |
| 15 | +# limitations under the License. |
| 16 | + |
| 17 | +"""This application demonstrates how to get and set IAM policies on Google |
| 18 | +Cloud Storage buckets. |
| 19 | +
|
| 20 | +For more information, see the documentation at |
| 21 | +https://cloud.google.com/storage/docs/access-control/using-iam-permissions. |
| 22 | +""" |
| 23 | + |
| 24 | +import argparse |
| 25 | + |
| 26 | +from google.cloud import storage |
| 27 | + |
| 28 | + |
| 29 | +def view_bucket_iam_members(bucket_name): |
| 30 | + storage_client = storage.Client() |
| 31 | + bucket = storage_client.bucket(bucket_name) |
| 32 | + |
| 33 | + policy = bucket.get_iam_policy() |
| 34 | + |
| 35 | + for role in policy: |
| 36 | + members = policy[role] |
| 37 | + print('Role: {}, Members: {}'.format(role, members)) |
| 38 | + |
| 39 | + |
| 40 | +def add_bucket_iam_member(bucket_name, role, member): |
| 41 | + storage_client = storage.Client() |
| 42 | + bucket = storage_client.bucket(bucket_name) |
| 43 | + |
| 44 | + policy = bucket.get_iam_policy() |
| 45 | + |
| 46 | + policy[role].add(member) |
| 47 | + |
| 48 | + bucket.set_iam_policy(policy) |
| 49 | + |
| 50 | + print('Added {} with role {} to {}.'.format( |
| 51 | + member, role, bucket_name)) |
| 52 | + |
| 53 | + |
| 54 | +def remove_bucket_iam_member(bucket_name, role, member): |
| 55 | + storage_client = storage.Client() |
| 56 | + bucket = storage_client.bucket(bucket_name) |
| 57 | + |
| 58 | + policy = bucket.get_iam_policy() |
| 59 | + |
| 60 | + policy[role].discard(member) |
| 61 | + |
| 62 | + bucket.set_iam_policy(policy) |
| 63 | + |
| 64 | + print('Removed {} with role {} from {}.'.format( |
| 65 | + member, role, bucket_name)) |
| 66 | + |
| 67 | + |
| 68 | +if __name__ == '__main__': |
| 69 | + parser = argparse.ArgumentParser( |
| 70 | + description=__doc__, |
| 71 | + formatter_class=argparse.RawDescriptionHelpFormatter) |
| 72 | + parser.add_argument('bucket_name', help='Your Cloud Storage bucket name.') |
| 73 | + subparsers = parser.add_subparsers(dest='command') |
| 74 | + |
| 75 | + subparsers.add_parser( |
| 76 | + 'view-bucket-iam-members', help=view_bucket_iam_members.__doc__) |
| 77 | + |
| 78 | + add_member_parser = subparsers.add_parser( |
| 79 | + 'add-bucket-iam-member', help=add_bucket_iam_member.__doc__) |
| 80 | + add_member_parser.add_argument('role') |
| 81 | + add_member_parser.add_argument('member') |
| 82 | + |
| 83 | + remove_member_parser = subparsers.add_parser( |
| 84 | + 'remove-bucket-iam-member', help=remove_bucket_iam_member.__doc__) |
| 85 | + remove_member_parser.add_argument('role') |
| 86 | + remove_member_parser.add_argument('member') |
| 87 | + |
| 88 | + args = parser.parse_args() |
| 89 | + |
| 90 | + if args.command == 'view-bucket-iam-members': |
| 91 | + view_bucket_iam_members(args.bucket_name) |
| 92 | + elif args.command == 'add-bucket-iam-member': |
| 93 | + add_bucket_iam_member(args.bucket_name, args.role, args.member) |
| 94 | + elif args.command == 'remove-bucket-iam-member': |
| 95 | + remove_bucket_iam_member(args.bucket_name, args.role, args.member) |
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