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# 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.
import sys
from oslo_config import cfg
from oslo_log import log
import six
from keystone.common import dependency
from keystone import exception
CONF = cfg.CONF
LOG = log.getLogger(__name__)
def construct_method_map_from_config():
"""Determine authentication method types for deployment.
:returns: a dictionary containing the methods and their indexes
"""
method_map = dict()
method_index = 1
for method in CONF.auth.methods:
method_map[method_index] = method
method_index = method_index * 2
return method_map
def convert_method_list_to_integer(methods):
"""Convert the method type(s) to an integer.
:param methods: a list of method names
:returns: an integer representing the methods
"""
method_map = construct_method_map_from_config()
method_ints = []
for method in methods:
for k, v in six.iteritems(method_map):
if v == method:
method_ints.append(k)
return sum(method_ints)
def convert_integer_to_method_list(method_int):
"""Convert an integer to a list of methods.
:param method_int: an integer representing methods
:returns: a corresponding list of methods
"""
# If the method_int is 0 then no methods were used so return an empty
# method list
if method_int == 0:
return []
method_map = construct_method_map_from_config()
method_ints = []
for k, v in six.iteritems(method_map):
method_ints.append(k)
method_ints.sort(reverse=True)
confirmed_methods = []
for m_int in method_ints:
# (lbragstad): By dividing the method_int by each key in the
# method_map, we know if the division results in an integer of 1, that
# key was used in the construction of the total sum of the method_int.
# In that case, we should confirm the key value and store it so we can
# look it up later. Then we should take the remainder of what is
# confirmed and the method_int and continue the process. In the end, we
# should have a list of integers that correspond to indexes in our
# method_map and we can reinflate the methods that the original
# method_int represents.
if (method_int / m_int) == 1:
confirmed_methods.append(m_int)
method_int = method_int - m_int
methods = []
for method in confirmed_methods:
methods.append(method_map[method])
return methods
@dependency.requires('identity_api', 'resource_api')
class UserAuthInfo(object):
@staticmethod
def create(auth_payload, method_name):
user_auth_info = UserAuthInfo()
user_auth_info._validate_and_normalize_auth_data(auth_payload)
user_auth_info.METHOD_NAME = method_name
return user_auth_info
def __init__(self):
self.user_id = None
self.password = None
self.user_ref = None
self.METHOD_NAME = None
def _assert_domain_is_enabled(self, domain_ref):
try:
self.resource_api.assert_domain_enabled(
domain_id=domain_ref['id'],
domain=domain_ref)
except AssertionError as e:
LOG.warning(six.text_type(e))
six.reraise(exception.Unauthorized, exception.Unauthorized(e),
sys.exc_info()[2])
def _assert_user_is_enabled(self, user_ref):
try:
self.identity_api.assert_user_enabled(
user_id=user_ref['id'],
user=user_ref)
except AssertionError as e:
LOG.warning(six.text_type(e))
six.reraise(exception.Unauthorized, exception.Unauthorized(e),
sys.exc_info()[2])
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.resource_api.get_domain_by_name(
domain_name)
else:
domain_ref = self.resource_api.get_domain(domain_id)
except exception.DomainNotFound as e:
LOG.exception(six.text_type(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=self.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')
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.resource_api.get_domain(
user_ref['domain_id'])
self._assert_domain_is_enabled(domain_ref)
except exception.UserNotFound as e:
LOG.exception(six.text_type(e))
raise exception.Unauthorized(e)
self._assert_user_is_enabled(user_ref)
self.user_ref = user_ref
self.user_id = user_ref['id']
self.domain_id = domain_ref['id']
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