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- # Copyright (C) 2011-2012 Yaco Sistemas (http://www.yaco.es)
- # Copyright (C) 2010 Lorenzo Gil Sanchez <lorenzo.gil.sanchez@gmail.com>
- #
- # 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.
- from saml2.cache import Cache
- class DjangoSessionCacheAdapter(dict):
- """A cache of things that are stored in the Django Session"""
- key_prefix = '_saml2'
- def __init__(self, django_session, key_suffix):
- self.session = django_session
- self.key = self.key_prefix + key_suffix
- super(DjangoSessionCacheAdapter, self).__init__(self._get_objects())
- def _get_objects(self):
- return self.session.get(self.key, {})
- def _set_objects(self, objects):
- self.session[self.key] = objects
- def sync(self):
- # Changes in inner objects do not cause session invalidation
- # https://docs.djangoproject.com/en/1.9/topics/http/sessions/#when-sessions-are-saved
- #add objects to session
- self._set_objects(dict(self))
- #invalidate session
- self.session.modified = True
- class OutstandingQueriesCache(object):
- """Handles the queries that have been sent to the IdP and have not
- been replied yet.
- """
- def __init__(self, django_session):
- self._db = DjangoSessionCacheAdapter(django_session,
- '_outstanding_queries')
- def outstanding_queries(self):
- return self._db._get_objects()
- def set(self, saml2_session_id, came_from):
- self._db[saml2_session_id] = came_from
- self._db.sync()
- def delete(self, saml2_session_id):
- if saml2_session_id in self._db:
- del self._db[saml2_session_id]
- self._db.sync()
- class IdentityCache(Cache):
- """Handles information about the users that have been succesfully
- logged in.
- This information is useful because when the user logs out we must
- know where does he come from in order to notify such IdP/AA.
- The current implementation stores this information in the Django session.
- """
- def __init__(self, django_session):
- self._db = DjangoSessionCacheAdapter(django_session, '_identities')
- self._sync = True
- class StateCache(DjangoSessionCacheAdapter):
- """Store state information that is needed to associate a logout
- request with its response.
- """
- def __init__(self, django_session):
- super(StateCache, self).__init__(django_session, '_state')
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