Source code for keystone.auth.plugins.external

# 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.

"""Keystone External Authentication Plugins."""

import abc

import six

from keystone.auth.plugins import base
from keystone.common import dependency
import keystone.conf
from keystone import exception
from keystone.i18n import _


CONF = keystone.conf.CONF


@six.add_metaclass(abc.ABCMeta)
[docs]class Base(base.AuthMethodHandler):
[docs] def authenticate(self, request, auth_info, auth_context): """Use REMOTE_USER to look up the user in the identity backend. auth_context is an in-out variable that will be updated with the user_id from the actual user from the REMOTE_USER env variable. """ if not request.remote_user: msg = _('No authenticated user') raise exception.Unauthorized(msg) try: user_ref = self._authenticate(request) except Exception: msg = _('Unable to lookup user %s') % request.remote_user raise exception.Unauthorized(msg) auth_context['user_id'] = user_ref['id'] auth_type = (request.auth_type or '').lower() if 'kerberos' in CONF.token.bind and auth_type == 'negotiate': auth_context['bind']['kerberos'] = user_ref['name']
@abc.abstractmethod def _authenticate(self, request): """Look up the user in the identity backend. Return user_ref """ pass
@dependency.requires('identity_api')
[docs]class DefaultDomain(Base): def _authenticate(self, request): """Use remote_user to look up the user in the identity backend.""" return self.identity_api.get_user_by_name( request.remote_user, CONF.identity.default_domain_id)
@dependency.requires('identity_api', 'resource_api')
[docs]class Domain(Base): def _authenticate(self, request): """Use remote_user to look up the user in the identity backend. The domain will be extracted from the REMOTE_DOMAIN environment variable if present. If not, the default domain will be used. """ if request.remote_domain: ref = self.resource_api.get_domain_by_name(request.remote_domain) domain_id = ref['id'] else: domain_id = CONF.identity.default_domain_id return self.identity_api.get_user_by_name(request.remote_user, domain_id)
[docs]class KerberosDomain(Domain): """Allows `kerberos` as a method.""" def _authenticate(self, request): if request.auth_type != 'Negotiate': raise exception.Unauthorized(_("auth_type is not Negotiate")) return super(KerberosDomain, self)._authenticate(request)

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