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# Copyright 2013 OpenStack Foundation
#
# 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.
import hashlib
from oslo_serialization import jsonutils
from keystone.common import controller
from keystone.common import dependency
from keystone.common import validation
from keystone.credential import schema
from keystone import exception
from keystone.i18n import _
@dependency.requires('credential_api')
class CredentialV3(controller.V3Controller):
collection_name = 'credentials'
member_name = 'credential'
def __init__(self):
super(CredentialV3, self).__init__()
self.get_member_from_driver = self.credential_api.get_credential
def _assign_unique_id(self, ref, trust_id=None):
# Generates and assigns a unique identifier to
# a credential reference.
if ref.get('type', '').lower() == 'ec2':
try:
blob = jsonutils.loads(ref.get('blob'))
except (ValueError, TypeError):
raise exception.ValidationError(
message=_('Invalid blob in credential'))
if not blob or not isinstance(blob, dict):
raise exception.ValidationError(attribute='blob',
target='credential')
if blob.get('access') is None:
raise exception.ValidationError(attribute='access',
target='blob')
ret_ref = ref.copy()
ret_ref['id'] = hashlib.sha256(blob['access']).hexdigest()
# Update the blob with the trust_id, so credentials created
# with a trust scoped token will result in trust scoped
# tokens when authentication via ec2tokens happens
if trust_id is not None:
blob['trust_id'] = trust_id
ret_ref['blob'] = jsonutils.dumps(blob)
return ret_ref
else:
return super(CredentialV3, self)._assign_unique_id(ref)
@controller.protected()
@validation.validated(schema.credential_create, 'credential')
def create_credential(self, context, credential):
trust_id = self._get_trust_id_for_request(context)
ref = self._assign_unique_id(self._normalize_dict(credential),
trust_id)
ref = self.credential_api.create_credential(ref['id'], ref)
return CredentialV3.wrap_member(context, ref)
@staticmethod
def _blob_to_json(ref):
# credentials stored via ec2tokens before the fix for #1259584
# need json serializing, as that's the documented API format
blob = ref.get('blob')
if isinstance(blob, dict):
new_ref = ref.copy()
new_ref['blob'] = jsonutils.dumps(blob)
return new_ref
else:
return ref
@controller.filterprotected('user_id')
def list_credentials(self, context, filters):
hints = CredentialV3.build_driver_hints(context, filters)
refs = self.credential_api.list_credentials(hints)
ret_refs = [self._blob_to_json(r) for r in refs]
return CredentialV3.wrap_collection(context, ret_refs,
hints=hints)
@controller.protected()
def get_credential(self, context, credential_id):
ref = self.credential_api.get_credential(credential_id)
ret_ref = self._blob_to_json(ref)
return CredentialV3.wrap_member(context, ret_ref)
@controller.protected()
@validation.validated(schema.credential_update, 'credential')
def update_credential(self, context, credential_id, credential):
self._require_matching_id(credential_id, credential)
ref = self.credential_api.update_credential(credential_id, credential)
return CredentialV3.wrap_member(context, ref)
@controller.protected()
def delete_credential(self, context, credential_id):
return self.credential_api.delete_credential(credential_id)
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