123 lines
4.1 KiB
Python
123 lines
4.1 KiB
Python
# Copyright 2017 AT&T Intellectual Property. All other rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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import logging
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import functools
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import falcon
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from oslo_config import cfg
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from oslo_policy import policy
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policy_engine = None
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class ShipyardPolicy(object):
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"""
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Initialize policy defaults
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"""
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# Base Policy
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base_rules = [
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policy.RuleDefault(
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'admin_required',
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'role:admin',
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description='Actions requiring admin authority'),
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]
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# Orchestrator Policy
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task_rules = [
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policy.DocumentedRuleDefault('workflow_orchestrator:get_regions',
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'role:admin', 'Get region information', [{
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'path':
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'/api/v1.0/regions',
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'method':
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'GET'
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}, {
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'path':
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'/api/v1.0/regions/{region_id}',
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'method':
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'GET'
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}])
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]
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# Regions Policy
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def __init__(self):
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self.enforcer = policy.Enforcer(cfg.CONF)
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def register_policy(self):
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self.enforcer.register_defaults(ShipyardPolicy.base_rules)
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self.enforcer.register_defaults(ShipyardPolicy.task_rules)
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def authorize(self, action, ctx):
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target = {'project_id': ctx.project_id, 'user_id': ctx.user_id}
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self.enforcer.authorize(action, target, ctx.to_policy_view())
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return self.enforcer.authorize(action, target, ctx.to_policy_view())
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class ApiEnforcer(object):
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"""
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A decorator class for enforcing RBAC policies
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"""
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def __init__(self, action):
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self.action = action
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self.logger = logging.getLogger('shipyard.policy')
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def __call__(self, f):
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@functools.wraps(f)
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def secure_handler(slf, req, resp, *args, **kwargs):
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ctx = req.context
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policy_engine = ctx.policy_engine
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self.logger.debug("Enforcing policy %s on request %s" %
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(self.action, ctx.request_id))
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try:
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if policy_engine is not None and policy_engine.authorize(
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self.action, ctx):
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return f(slf, req, resp, *args, **kwargs)
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else:
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if ctx.authenticated:
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slf.info(ctx, "Error - Forbidden access - action: %s" %
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self.action)
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slf.return_error(
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resp,
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falcon.HTTP_403,
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message="Forbidden",
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retry=False)
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else:
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slf.info(ctx, "Error - Unauthenticated access")
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slf.return_error(
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resp,
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falcon.HTTP_401,
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message="Unauthenticated",
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retry=False)
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except:
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slf.info(
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ctx,
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"Error - Expectation Failed - action: %s" % self.action)
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slf.return_error(
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resp,
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falcon.HTTP_417,
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message="Expectation Failed",
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retry=False)
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return secure_handler
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def list_policies():
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default_policy = []
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default_policy.extend(ShipyardPolicy.base_rules)
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default_policy.extend(ShipyardPolicy.task_rules)
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return default_policy
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