68 lines
1.9 KiB
Python
68 lines
1.9 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright (c) 2011 OpenStack, LLC.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Policy Engine For Kwapi"""
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import os
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from oslo.config import cfg
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from kwapi.openstack.common import policy
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from kwapi import utils
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OPTS = [
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cfg.StrOpt('policy_file',
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default='policy.json',
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help='JSON file representing policy'),
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cfg.StrOpt('policy_default_rule',
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default='default',
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help='Rule checked when requested rule is not found'),
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]
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cfg.CONF.register_opts(OPTS)
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_POLICY_PATH = None
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_POLICY_CACHE = {}
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def init():
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global _POLICY_PATH
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global _POLICY_CACHE
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if not _POLICY_PATH:
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_POLICY_PATH = cfg.CONF.policy_file
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if not os.path.exists(_POLICY_PATH):
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_POLICY_PATH = cfg.CONF.find_file(_POLICY_PATH)
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if not _POLICY_PATH:
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raise cfg.ConfigFilesNotFoundError([cfg.CONF.policy_file])
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utils.read_cached_file(_POLICY_PATH, _POLICY_CACHE,
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reload_func=_set_rules)
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def _set_rules(data):
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default_rule = cfg.CONF.policy_default_rule
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policy.set_rules(policy.Rules.load_json(data, default_rule))
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def check_is_admin(roles):
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"""Whether or not roles contains 'admin' role according to policy setting.
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"""
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init()
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return policy.check('context_is_admin', {}, {'roles': roles})
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