OpenStack Identity (Keystone)
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2012 OpenStack 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.
# Copyright (c) 2011 OpenStack, 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.
"""
Nova Auth Middleware.
"""
import webob.dec
import webob.exc
from nova import context
from nova import flags
from nova import wsgi
FLAGS = flags.FLAGS
flags.DECLARE('use_forwarded_for', 'nova.api.auth')
class NovaKeystoneContext(wsgi.Middleware):
"""Make a request context from keystone headers"""
@webob.dec.wsgify(RequestClass=wsgi.Request)
def __call__(self, req):
try:
user_id = req.headers['X_USER']
except KeyError:
return webob.exc.HTTPUnauthorized()
# get the roles
roles = [r.strip() for r in req.headers.get('X_ROLE', '').split(',')]
if 'X_TENANT_ID' in req.headers:
# This is the new header since Keystone went to ID/Name
project_id = req.headers['X_TENANT_ID']
else:
# This is for legacy compatibility
project_id = req.headers['X_TENANT']
# Get the auth token
auth_token = req.headers.get('X_AUTH_TOKEN',
req.headers.get('X_STORAGE_TOKEN'))
# Build a context, including the auth_token...
remote_address = getattr(req, 'remote_address', '127.0.0.1')
remote_address = req.remote_addr
if FLAGS.use_forwarded_for:
remote_address = req.headers.get('X-Forwarded-For', remote_address)
ctx = context.RequestContext(user_id,
project_id,
roles=roles,
auth_token=auth_token,
strategy='keystone',
remote_address=remote_address)
req.environ['nova.context'] = ctx
return self.application