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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2013 OpenStack LLC
#
# 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 Plugin"""
from keystone.common import config
from keystone import exception
CONF = config.CONF
class ExternalDefault(object):
def authenticate(self, context, 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
username from the REMOTE_USER environment variable.
"""
try:
REMOTE_USER = context['REMOTE_USER']
except KeyError:
msg = _('No authenticated user')
raise exception.Unauthorized(msg)
try:
names = REMOTE_USER.split('@')
username = names.pop(0)
domain_id = CONF.identity.default_domain_id
user_ref = auth_info.identity_api.get_user_by_name(username,
domain_id)
auth_context['user_id'] = user_ref['id']
if ('kerberos' in CONF.token.bind and
context.get('AUTH_TYPE', '').lower() == 'negotiate'):
auth_context['bind']['kerberos'] = username
except Exception:
msg = _('Unable to lookup user %s') % (REMOTE_USER)
raise exception.Unauthorized(msg)
class ExternalDomain(object):
def authenticate(self, context, 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
username from the REMOTE_USER environment variable.
If REMOTE_USER contains an `@` assume that the substring before the @
is the username, and the substring after the @ is the domain name.
"""
try:
REMOTE_USER = context['REMOTE_USER']
except KeyError:
msg = _('No authenticated user')
raise exception.Unauthorized(msg)
try:
names = REMOTE_USER.split('@')
username = names.pop(0)
if names:
domain_name = names[0]
domain_ref = (auth_info.identity_api.
get_domain_by_name(domain_name))
domain_id = domain_ref['id']
else:
domain_id = CONF.identity.default_domain_id
user_ref = auth_info.identity_api.get_user_by_name(username,
domain_id)
auth_context['user_id'] = user_ref['id']
if ('kerberos' in CONF.token.bind and
context.get('AUTH_TYPE', '').lower() == 'negotiate'):
auth_context['bind']['kerberos'] = username
except Exception:
msg = _('Unable to lookup user %s') % (REMOTE_USER)
raise exception.Unauthorized(msg)
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