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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.
from keystone import auth
from keystone.common import logging
from keystone import exception
from keystone import identity
METHOD_NAME = 'password'
LOG = logging.getLogger(__name__)
class UserAuthInfo(object):
def __init__(self, auth_payload):
self.identity_api = identity.Manager()
self.user_id = None
self.password = None
self.user_ref = None
self._validate_and_normalize_auth_data(auth_payload)
def _assert_domain_is_enabled(self, domain_ref):
if not domain_ref.get('enabled'):
msg = _('Domain is disabled: %s') % (domain_ref['id'])
LOG.warning(msg)
raise exception.Unauthorized(msg)
def _assert_user_is_enabled(self, user_ref):
if not user_ref.get('enabled', True):
msg = _('User is disabled: %s') % (user_ref['id'])
LOG.warning(msg)
raise exception.Unauthorized(msg)
def _lookup_domain(self, domain_info):
domain_id = domain_info.get('id')
domain_name = domain_info.get('name')
domain_ref = None
if not domain_id and not domain_name:
raise exception.ValidationError(attribute='id or name',
target='domain')
try:
if domain_name:
domain_ref = self.identity_api.get_domain_by_name(domain_name)
else:
domain_ref = self.identity_api.get_domain(domain_id)
except exception.DomainNotFound as e:
LOG.exception(e)
raise exception.Unauthorized(e)
self._assert_domain_is_enabled(domain_ref)
return domain_ref
def _validate_and_normalize_auth_data(self, auth_payload):
if 'user' not in auth_payload:
raise exception.ValidationError(attribute='user',
target=METHOD_NAME)
user_info = auth_payload['user']
user_id = user_info.get('id')
user_name = user_info.get('name')
user_ref = None
if not user_id and not user_name:
raise exception.ValidationError(attribute='id or name',
target='user')
self.password = user_info.get('password', None)
try:
if user_name:
if 'domain' not in user_info:
raise exception.ValidationError(attribute='domain',
target='user')
domain_ref = self._lookup_domain(user_info['domain'])
user_ref = self.identity_api.get_user_by_name(
user_name, domain_ref['id'])
else:
user_ref = self.identity_api.get_user(user_id)
domain_ref = self.identity_api.get_domain(
user_ref['domain_id'])
self._assert_domain_is_enabled(domain_ref)
except exception.UserNotFound as e:
LOG.exception(e)
raise exception.Unauthorized(e)
self._assert_user_is_enabled(user_ref)
self.user_ref = user_ref
self.user_id = user_ref['id']
class Password(auth.AuthMethodHandler):
def authenticate(self, context, auth_payload, user_context):
"""Try to authenticate against the identity backend."""
user_info = UserAuthInfo(auth_payload)
# FIXME(gyee): identity.authenticate() can use some refactoring since
# all we care is password matches
try:
self.identity_api.authenticate(
user_id=user_info.user_id,
password=user_info.password)
except AssertionError:
# authentication failed because of invalid username or password
msg = _('Invalid username or password')
raise exception.Unauthorized(msg)
if 'user_id' not in user_context:
user_context['user_id'] = user_info.user_id
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