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 keystone import auth
from keystone.common import wsgi
from keystone import exception
from keystone.openstack.common import log
from keystone.openstack.common import timeutils
from keystone.token import provider


LOG = log.getLogger(__name__)


[docs]class Token(auth.AuthMethodHandler): method = 'token' def __init__(self): self.provider = provider.Manager()
[docs] def authenticate(self, context, auth_payload, user_context): try: if 'id' not in auth_payload: raise exception.ValidationError(attribute='id', target=self.method) token_id = auth_payload['id'] response = self.provider.validate_token(token_id) #for V3 tokens, the essential data is under the 'token' value. #For V2, the comparable data was nested under 'access' token_ref = response.get('token', response.get('access')) #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 'OS-TRUST:trust' in token_ref: raise exception.Forbidden() if 'trust' in token_ref: raise exception.Forbidden() if 'trust_id' in token_ref.get('metadata', {}): raise exception.Forbidden() if 'OS-OAUTH1' in token_ref: raise exception.Forbidden() wsgi.validate_token_bind(context, token_ref) #new tokens are not allowed to extend the expiration #time of an old token, otherwise, they could be extened #forever. The expiration value was stored at different #locations in v2 and v3 tokens. expires_at = token_ref.get('expires_at') if not expires_at: expires_at = token_ref.get('expires') if not expires_at: expires_at = timeutils.normalize_time( timeutils.parse_isotime(token_ref['token']['expires'])) user_context.setdefault('expires_at', expires_at) user_context.setdefault('user_id', token_ref['user']['id']) user_context['extras'].update(token_ref.get('extras', {})) user_context['method_names'].extend(token_ref.get('methods', [])) except AssertionError as e: LOG.error(e) raise exception.Unauthorized(e)