deb-heat/heat/common/custom_backend_auth.py
april bf8f99e0d7 Fix some inconsistency in docstrings
Added colon after ":returns" according to:
http://docs.openstack.org/developer/hacking

blank lines are added before the param lines

Change-Id: Icfce30824be23a4b221900e49c33fe8b346efa18
2015-12-29 01:40:42 +08:00

68 lines
2.1 KiB
Python

#
# Copyright (C) 2012, Red Hat, Inc.
#
# 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.
"""Middleware for authenticating against custom backends."""
from oslo_context import context
from oslo_log import log as logging
import webob.exc
from heat.common.i18n import _
from heat.rpc import client as rpc_client
LOG = logging.getLogger(__name__)
class AuthProtocol(object):
def __init__(self, app, conf):
self.conf = conf
self.app = app
self.rpc_client = rpc_client.EngineClient()
def __call__(self, env, start_response):
"""Handle incoming request.
Authenticate send downstream on success. Reject request if
we can't authenticate.
"""
LOG.debug('Authenticating user token')
ctx = context.get_current()
authenticated = self.rpc_client.authenticated_to_backend(ctx)
if authenticated:
return self.app(env, start_response)
else:
return self._reject_request(env, start_response)
def _reject_request(self, env, start_response):
"""Redirect client to auth server.
:param env: wsgi request environment
:param start_response: wsgi response callback
:returns: HTTPUnauthorized http response
"""
resp = webob.exc.HTTPUnauthorized(_("Backend authentication failed"),
[])
return resp(env, start_response)
def filter_factory(global_conf, **local_conf):
conf = global_conf.copy()
conf.update(local_conf)
def auth_filter(app):
return AuthProtocol(app, conf)
return auth_filter