65 lines
2.3 KiB
Python
65 lines
2.3 KiB
Python
#
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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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import re
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from keystonemiddleware import auth_token
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from oslo_log import log
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from ekko.common import exception
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LOG = log.getLogger(__name__)
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# TODO(pbourke): add i18n support
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_ = lambda x: x
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class AuthTokenMiddleware(auth_token.AuthProtocol):
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"""A wrapper on Keystone auth_token middleware.
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Does not perform verification of authentication tokens
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for public routes in the API.
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"""
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def __init__(self, app, conf, public_api_routes=[]):
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self._ekko_app = app
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# TODO(mrda): Remove .xml and ensure that doesn't result in a
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# 401 Authentication Required instead of 404 Not Found
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route_pattern_tpl = '%s(\.json|\.xml)?$'
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try:
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self.public_api_routes = [re.compile(route_pattern_tpl % route_tpl)
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for route_tpl in public_api_routes]
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except re.error as e:
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msg = _('Cannot compile public API routes: %s') % e
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LOG.error(msg)
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raise exception.ConfigInvalid(error_msg=msg)
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super(AuthTokenMiddleware, self).__init__(app, conf)
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def __call__(self, env, start_response):
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# TODO(pbourke): ironic uses a utils.safe_rstrip function here.
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path = env.get('PATH_INFO').rstrip('/')
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# The information whether the API call is being performed against the
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# public API is required for some other components. Saving it to the
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# WSGI environment is reasonable thereby.
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env['is_public_api'] = any(map(lambda pattern: re.match(pattern, path),
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self.public_api_routes))
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if env['is_public_api']:
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return self._ekko_app(env, start_response)
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return super(AuthTokenMiddleware, self).__call__(env, start_response)
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