107 lines
3.5 KiB
Python
107 lines
3.5 KiB
Python
# Copyright (c) 2011 OpenStack Foundation
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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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from oslo_log import log as logging
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from oslo_log import versionutils
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from oslo_serialization import jsonutils
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import webob.dec
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import webob.exc
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from nova.api import wsgi
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import nova.conf
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from nova import context
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from nova.i18n import _
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CONF = nova.conf.CONF
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LOG = logging.getLogger(__name__)
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def _load_pipeline(loader, pipeline):
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filters = [loader.get_filter(n) for n in pipeline[:-1]]
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app = loader.get_app(pipeline[-1])
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filters.reverse()
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for filter in filters:
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app = filter(app)
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return app
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def pipeline_factory(loader, global_conf, **local_conf):
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"""A paste pipeline replica that keys off of auth_strategy."""
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versionutils.report_deprecated_feature(
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LOG,
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"The legacy V2 API code tree has been removed in Newton. "
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"Please remove legacy v2 API entry from api-paste.ini, and use "
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"V2.1 API or V2.1 API compat mode instead"
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)
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def pipeline_factory_v21(loader, global_conf, **local_conf):
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"""A paste pipeline replica that keys off of auth_strategy."""
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return _load_pipeline(loader, local_conf[CONF.api.auth_strategy].split())
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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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# Build a context, including the auth_token...
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remote_address = req.remote_addr
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if CONF.api.use_forwarded_for:
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remote_address = req.headers.get('X-Forwarded-For', remote_address)
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service_catalog = None
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if req.headers.get('X_SERVICE_CATALOG') is not None:
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try:
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catalog_header = req.headers.get('X_SERVICE_CATALOG')
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service_catalog = jsonutils.loads(catalog_header)
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except ValueError:
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raise webob.exc.HTTPInternalServerError(
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_('Invalid service catalog json.'))
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# NOTE(jamielennox): This is a full auth plugin set by auth_token
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# middleware in newer versions.
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user_auth_plugin = req.environ.get('keystone.token_auth')
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ctx = context.RequestContext.from_environ(
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req.environ,
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user_auth_plugin=user_auth_plugin,
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remote_address=remote_address,
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service_catalog=service_catalog)
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if ctx.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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req.environ['nova.context'] = ctx
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return self.application
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