# Copyright 2017-2018 Capital One Services, LLC
#
# 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.
from .core import BaseAction
from c7n import utils
[docs]class RemovePolicyBase(BaseAction):
schema = utils.type_schema(
'remove-statements',
required=['statement_ids'],
statement_ids={'oneOf': [
{'enum': ['matched']},
{'type': 'array', 'items': {'type': 'string'}}]})
[docs] def process_policy(self, policy, resource, matched_key):
statements = policy.get('Statement', [])
resource_statements = resource.get(matched_key, ())
return remove_statements(
self.data['statement_ids'], statements, resource_statements)
[docs]def remove_statements(match_ids, statements, matched=()):
found = []
for s in list(statements):
s_found = False
if match_ids == '*':
s_found = True
elif match_ids == 'matched':
if s in matched:
s_found = True
elif s['Sid'] in match_ids:
s_found = True
if s_found:
found.append(s)
statements.remove(s)
if not found:
return None, found
return statements, found
[docs]class ModifyPolicyBase(BaseAction):
schema_alias = True
schema = utils.type_schema(
'modify-policy',
**{
'add-statements': {
'type': 'array',
'items': {'$ref': '#/definitions/iam-statement'},
},
'remove-statements': {
'type': ['array', 'string'],
'oneOf': [
{'enum': ['matched', '*']},
{'type': 'array', 'items': {'type': 'string'}}
],
}
}
)
def __init__(self, data=None, manager=None):
if manager is not None:
config_args = {
'account_id': manager.config.account_id,
'region': manager.config.region
}
self.data = utils.format_string_values(data, **config_args)
else:
self.data = utils.format_string_values(data)
self.manager = manager
[docs] def add_statements(self, policy_statements):
current = {s['Sid']: s for s in policy_statements}
additional = {s['Sid']: s for s in self.data.get('add-statements', [])}
current.update(additional)
return list(current.values()), bool(additional)
[docs] def remove_statements(self, policy_statements, resource, matched_key):
statement_ids = self.data.get('remove-statements', [])
found = []
if len(statement_ids) == 0:
return policy_statements, found
resource_statements = resource.get(matched_key, ())
return remove_statements(
statement_ids, policy_statements, resource_statements)