Source code for keystone.auth.plugins.token

# Copyright 2013 OpenStack Foundation
#
# 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 oslo_log import log
import six

from keystone.auth.plugins import base
from keystone.auth.plugins import mapped
from keystone.common import dependency
from keystone.common import wsgi
import keystone.conf
from keystone import exception
from keystone.i18n import _
from keystone.models import token_model


LOG = log.getLogger(__name__)

CONF = keystone.conf.CONF


@dependency.requires('federation_api', 'identity_api', 'token_provider_api')
[docs]class Token(base.AuthMethodHandler): def _get_token_ref(self, auth_payload): token_id = auth_payload['id'] response = self.token_provider_api.validate_token(token_id) return token_model.KeystoneToken(token_id=token_id, token_data=response)
[docs] def authenticate(self, request, auth_payload, user_context): if 'id' not in auth_payload: raise exception.ValidationError(attribute='id', target='token') token_ref = self._get_token_ref(auth_payload) if token_ref.is_federated_user and self.federation_api: mapped.handle_scoped_token( request, auth_payload, user_context, token_ref, self.federation_api, self.identity_api, self.token_provider_api) else: token_authenticate(request, auth_payload, user_context, token_ref)
[docs]def token_authenticate(request, auth_payload, user_context, token_ref): try: # Do not allow tokens used for delegation to # create another token, or perform any changes of # state in Keystone. To do so is to invite elevation of # privilege attacks if token_ref.oauth_scoped or token_ref.trust_scoped: raise exception.Forbidden() if not CONF.token.allow_rescope_scoped_token: # Do not allow conversion from scoped tokens. if token_ref.project_scoped or token_ref.domain_scoped: raise exception.Forbidden(action=_("rescope a scoped token")) wsgi.validate_token_bind(request.context_dict, token_ref) # New tokens maintain the audit_id of the original token in the # chain (if possible) as the second element in the audit data # structure. Look for the last element in the audit data structure # which will be either the audit_id of the token (in the case of # a token that has not been rescoped) or the audit_chain id (in # the case of a token that has been rescoped). try: token_audit_id = token_ref.get('audit_ids', [])[-1] except IndexError: # NOTE(morganfainberg): In the case this is a token that was # issued prior to audit id existing, the chain is not tracked. token_audit_id = None user_context.setdefault('expires_at', token_ref.expires) user_context['audit_id'] = token_audit_id user_context.setdefault('user_id', token_ref.user_id) # TODO(morganfainberg: determine if token 'extras' can be removed # from the user_context user_context['extras'].update(token_ref.get('extras', {})) user_context['method_names'].extend(token_ref.methods) except AssertionError as e: LOG.error(six.text_type(e)) raise exception.Unauthorized(e)

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