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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
# 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 logging
import webob.dec
import webob.exc
from quantum import context
from quantum import wsgi
from quantum.openstack.common import cfg
LOG = logging.getLogger(__name__)
class QuantumKeystoneContext(wsgi.Middleware):
"""Make a request context from keystone headers."""
def __call__(self, req):
# Determine the user ID
user_id = req.headers.get('X_USER_ID', req.headers.get('X_USER'))
if not user_id:
LOG.debug("Neither X_USER_ID nor X_USER found in request")
return webob.exc.HTTPUnauthorized()
# Determine the tenant
tenant_id = req.headers.get('X_TENANT_ID', req.headers.get('X_TENANT'))
# Suck out the roles
roles = [r.strip() for r in req.headers.get('X_ROLE', '').split(',')]
# Create a context with the authentication data
ctx = context.Context(user_id, tenant_id, roles=roles)
# Inject the context...
req.environ['quantum.context'] = ctx
return self.application
def pipeline_factory(loader, global_conf, **local_conf):
"""Create a paste pipeline based on the 'auth_strategy' config option."""
pipeline = local_conf[cfg.CONF.auth_strategy]
pipeline = pipeline.split()
filters = [loader.get_filter(n) for n in pipeline[:-1]]
app = loader.get_app(pipeline[-1])
for filter in filters:
app = filter(app)
return app
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