99 lines
3.2 KiB
Python
99 lines
3.2 KiB
Python
# 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
|
|
import keystone.conf
|
|
from keystone import exception
|
|
from keystone.i18n import _
|
|
|
|
|
|
CONF = keystone.conf.CONF
|
|
|
|
|
|
@six.add_metaclass(abc.ABCMeta)
|
|
class Base(base.AuthMethodHandler):
|
|
def authenticate(self, request, auth_payload,):
|
|
"""Use REMOTE_USER to look up the user in the identity backend.
|
|
|
|
The user_id from the actual user from the REMOTE_USER env variable is
|
|
placed in the response_data.
|
|
"""
|
|
response_data = {}
|
|
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)
|
|
|
|
response_data['user_id'] = user_ref['id']
|
|
auth_type = (request.auth_type or '').lower()
|
|
|
|
if 'kerberos' in CONF.token.bind and auth_type == 'negotiate':
|
|
response_data.setdefault('bind', {})['kerberos'] = user_ref['name']
|
|
|
|
return base.AuthHandlerResponse(status=True, response_body=None,
|
|
response_data=response_data)
|
|
|
|
@abc.abstractmethod
|
|
def _authenticate(self, request):
|
|
"""Look up the user in the identity backend.
|
|
|
|
Return user_ref
|
|
"""
|
|
pass
|
|
|
|
|
|
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)
|
|
|
|
|
|
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)
|
|
|
|
|
|
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)
|