db14ee24a7
Invalidate the application credential after deletion, not before.
This prevents timing issues where an app_cred could remain active
after deletion.
Change-Id: I14748bf2399e5da4ee360f451a8050f25dd90803
(cherry picked from commit 906a1d3f68
)
223 lines
8.7 KiB
Python
223 lines
8.7 KiB
Python
# Copyright 2018 SUSE Linux GmbH
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Main entry point into the Application Credential service."""
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from oslo_log import log
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from keystone.common import cache
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from keystone.common import driver_hints
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from keystone.common import manager
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from keystone.common import provider_api
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import keystone.conf
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from keystone import exception
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from keystone import notifications
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CONF = keystone.conf.CONF
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MEMOIZE = cache.get_memoization_decorator(group='application_credential')
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LOG = log.getLogger(__name__)
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PROVIDERS = provider_api.ProviderAPIs
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class Manager(manager.Manager):
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"""Default pivot point for the Application Credential backend.
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See :mod:`keystone.common.manager.Manager` for more details on how this
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dynamically calls the backend.
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"""
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driver_namespace = 'keystone.application_credential'
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_provides_api = 'application_credential_api'
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_APP_CRED = 'application_credential'
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def __init__(self):
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super(Manager, self).__init__(CONF.application_credential.driver)
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self._register_callback_listeners()
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def _register_callback_listeners(self):
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notifications.register_event_callback(
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notifications.ACTIONS.deleted, 'user',
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self._delete_app_creds_on_user_delete_callback)
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notifications.register_event_callback(
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notifications.ACTIONS.disabled, 'user',
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self._delete_app_creds_on_user_delete_callback)
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notifications.register_event_callback(
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notifications.ACTIONS.internal,
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# This notification is emitted when a role assignment is removed,
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# we can take advantage of it even though we're not a token.
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notifications.INVALIDATE_USER_PROJECT_TOKEN_PERSISTENCE,
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self._delete_app_creds_on_assignment_removal)
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def _delete_app_creds_on_user_delete_callback(
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self, service, resource_type, operation, payload):
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user_id = payload['resource_info']
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self._delete_application_credentials_for_user(user_id)
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def _delete_app_creds_on_assignment_removal(
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self, service, resource_type, operation, payload):
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user_id = payload['resource_info']['user_id']
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project_id = payload['resource_info']['project_id']
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self._delete_application_credentials_for_user_on_project(user_id,
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project_id)
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def _get_user_roles(self, user_id, project_id):
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assignment_list = self.assignment_api.list_role_assignments(
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user_id=user_id,
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project_id=project_id,
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effective=True)
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return list(set([x['role_id'] for x in assignment_list]))
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def _require_user_has_role_in_project(self, roles, user_id, project_id):
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user_roles = self._get_user_roles(user_id, project_id)
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for role in roles:
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matching_roles = [x for x in user_roles
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if x == role['id']]
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if not matching_roles:
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raise exception.RoleAssignmentNotFound(role_id=role['id'],
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actor_id=user_id,
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target_id=project_id)
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def _assert_limit_not_exceeded(self, user_id):
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user_limit = CONF.application_credential.user_limit
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if user_limit >= 0:
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app_cred_count = len(self.list_application_credentials(user_id))
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if app_cred_count >= user_limit:
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raise exception.ApplicationCredentialLimitExceeded(
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limit=user_limit)
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def _get_role_list(self, app_cred_roles):
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roles = []
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for role in app_cred_roles:
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roles.append(PROVIDERS.role_api.get_role(role['id']))
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return roles
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def authenticate(self, request, application_credential_id, secret):
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"""Authenticate with an application credential.
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:param str application_credential_id: Application Credential ID
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:param str secret: Application Credential secret
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"""
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self.driver.authenticate(application_credential_id, secret)
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def _process_app_cred(self, app_cred_ref):
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app_cred_ref = app_cred_ref.copy()
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app_cred_ref.pop('secret_hash')
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app_cred_ref['roles'] = self._get_role_list(
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app_cred_ref['roles'])
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return app_cred_ref
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def create_application_credential(self, application_credential,
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initiator=None):
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"""Create a new application credential.
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:param dict application_credential: Application Credential data
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:param initiator: CADF initiator
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:returns: a new application credential
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"""
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application_credential = application_credential.copy()
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user_id = application_credential['user_id']
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project_id = application_credential['project_id']
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roles = application_credential.pop('roles', [])
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self._assert_limit_not_exceeded(user_id)
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self._require_user_has_role_in_project(roles, user_id, project_id)
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unhashed_secret = application_credential['secret']
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ref = self.driver.create_application_credential(
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application_credential, roles)
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ref['secret'] = unhashed_secret
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ref = self._process_app_cred(ref)
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notifications.Audit.created(
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self._APP_CRED,
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application_credential['id'],
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initiator)
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return ref
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@MEMOIZE
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def get_application_credential(self, application_credential_id):
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"""Get application credential details.
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:param str application_credential_id: Application Credential ID
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:returns: an application credential
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"""
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app_cred = self.driver.get_application_credential(
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application_credential_id)
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return self._process_app_cred(app_cred)
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def list_application_credentials(self, user_id, hints=None):
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"""List application credentials for a user.
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:param str user_id: User ID
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:param dict hints: Properties to filter on
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:returns: a list of application credentials
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"""
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hints = hints or driver_hints.Hints()
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app_cred_list = self.driver.list_application_credentials_for_user(
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user_id, hints)
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return [self._process_app_cred(app_cred) for app_cred in app_cred_list]
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def delete_application_credential(self, application_credential_id,
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initiator=None):
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"""Delete an application credential.
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:param str application_credential_id: Application Credential ID
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:param initiator: CADF initiator
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:raises keystone.exception.ApplicationCredentialNotFound: If the
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application credential doesn't exist.
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"""
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self.driver.delete_application_credential(application_credential_id)
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self.get_application_credential.invalidate(self,
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application_credential_id)
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notifications.Audit.deleted(
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self._APP_CRED, application_credential_id, initiator)
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def _delete_application_credentials_for_user(self, user_id):
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"""Delete all application credentials for a user.
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:param str user_id: User ID
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This is triggered when a user is deleted.
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"""
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app_creds = self.driver.list_application_credentials_for_user(
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user_id, driver_hints.Hints())
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self.driver.delete_application_credentials_for_user(user_id)
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for app_cred in app_creds:
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self.get_application_credential.invalidate(self, app_cred['id'])
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def _delete_application_credentials_for_user_on_project(self, user_id,
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project_id):
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"""Delete all application credentials for a user on a given project.
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:param str user_id: User ID
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:param str project_id: Project ID
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This is triggered when a user loses a role assignment on a project.
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"""
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hints = driver_hints.Hints()
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hints.add_filter('project_id', project_id)
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app_creds = self.driver.list_application_credentials_for_user(
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user_id, hints)
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self.driver.delete_application_credentials_for_user_on_project(
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user_id, project_id)
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for app_cred in app_creds:
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self.get_application_credential.invalidate(self, app_cred['id'])
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