90 lines
3.1 KiB
Python
90 lines
3.1 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright (c) 2011 OpenStack, LLC
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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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"""
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Common Auth Middleware.
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"""
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import webob.dec
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import webob.exc
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from nova import context
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from nova import flags
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from nova import log as logging
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from nova.openstack.common import cfg
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from nova import wsgi
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use_forwarded_for_opt = cfg.BoolOpt('use_forwarded_for',
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default=False,
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help='Treat X-Forwarded-For as the canonical remote address. '
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'Only enable this if you have a sanitizing proxy.')
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FLAGS = flags.FLAGS
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FLAGS.register_opt(use_forwarded_for_opt)
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LOG = logging.getLogger(__name__)
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class InjectContext(wsgi.Middleware):
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"""Add a 'nova.context' to WSGI environ."""
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def __init__(self, context, *args, **kwargs):
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self.context = context
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super(InjectContext, self).__init__(*args, **kwargs)
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@webob.dec.wsgify(RequestClass=wsgi.Request)
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def __call__(self, req):
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req.environ['nova.context'] = self.context
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return self.application
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class NovaKeystoneContext(wsgi.Middleware):
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"""Make a request context from keystone headers"""
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@webob.dec.wsgify(RequestClass=wsgi.Request)
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def __call__(self, req):
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user_id = req.headers.get('X_USER')
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user_id = req.headers.get('X_USER_ID', user_id)
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if user_id is None:
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LOG.debug("Neither X_USER_ID nor X_USER found in request")
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return webob.exc.HTTPUnauthorized()
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# get the roles
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roles = [r.strip() for r in req.headers.get('X_ROLE', '').split(',')]
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if 'X_TENANT_ID' in req.headers:
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# This is the new header since Keystone went to ID/Name
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project_id = req.headers['X_TENANT_ID']
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else:
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# This is for legacy compatibility
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project_id = req.headers['X_TENANT']
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# Get the auth token
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auth_token = req.headers.get('X_AUTH_TOKEN',
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req.headers.get('X_STORAGE_TOKEN'))
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# Build a context, including the auth_token...
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remote_address = req.remote_addr
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if FLAGS.use_forwarded_for:
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remote_address = req.headers.get('X-Forwarded-For', remote_address)
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ctx = context.RequestContext(user_id,
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project_id,
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roles=roles,
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auth_token=auth_token,
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strategy='keystone',
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remote_address=remote_address)
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req.environ['nova.context'] = ctx
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return self.application
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