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#!/usr/bin/env python3
# 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 collections.abc
import sys
from oslo_serialization import jsonutils
from oslo_config import cfg
from oslo_policy import opts
from oslo_policy import policy
class FakeEnforcer(object):
def __init__(self, rules, config):
self.rules = rules
self.conf = None
if config:
self.conf = cfg.ConfigOpts()
for group, options in opts.list_opts():
self.conf.register_opts(options, group)
self.conf(["--config-file={}".format(config)])
def _try_rule(key, rule, target, access_data, o):
try:
result = rule(target, access_data, o, current_rule=key)
if result:
print("passed: %s" % key)
else:
print("failed: %s" % key)
except Exception as e:
print(e)
print("exception: %s" % rule)
def flatten(d, parent_key=''):
"""Flatten a nested dictionary
Converts a dictionary with nested values to a single level flat
dictionary, with dotted notation for each key.
"""
items = []
for k, v in d.items():
new_key = parent_key + '.' + k if parent_key else k
if isinstance(v, collections.abc.MutableMapping):
items.extend(flatten(v, new_key).items())
else:
items.append((new_key, v))
return dict(items)
def tool(policy_file, access_file, apply_rule, is_admin=False,
target_file=None, enforcer_config=None):
with open(access_file, "rb", 0) as a:
access = a.read()
access_data = jsonutils.loads(access)['token']
access_data['roles'] = [role['name'] for role in access_data['roles']]
access_data['user_id'] = access_data['user']['id']
if access_data.get('project'):
access_data['project_id'] = access_data['project']['id']
if access_data.get('system'):
access_data['system_scope'] = 'all'
access_data['is_admin'] = is_admin
with open(policy_file, "rb", 0) as p:
policy_data = p.read()
rules = policy.Rules.load(policy_data, "default")
enforcer = FakeEnforcer(rules, enforcer_config)
if target_file:
with open(target_file, "rb", 0) as t:
target = t.read()
target_data = flatten(jsonutils.loads(target))
else:
target_data = {'user_id': access_data['user']['id']}
if access_data.get('project_id'):
target_data['project_id'] = access_data['project_id']
if apply_rule:
key = apply_rule
rule = rules[apply_rule]
_try_rule(key, rule, target_data, access_data, enforcer)
return
for key, rule in sorted(rules.items()):
if ":" in key:
_try_rule(key, rule, target_data, access_data, enforcer)
def main():
conf = cfg.ConfigOpts()
conf.register_cli_opt(cfg.StrOpt(
'policy',
required=True,
help='path to a policy file.'))
conf.register_cli_opt(cfg.StrOpt(
'access',
required=True,
help='path to a file containing OpenStack Identity API '
'access info in JSON format.'))
conf.register_cli_opt(cfg.StrOpt(
'target',
help='path to a file containing custom target info in '
'JSON format. This will be used to evaluate the policy with.'))
conf.register_cli_opt(cfg.StrOpt(
'rule',
help='rule to test.'))
conf.register_cli_opt(cfg.BoolOpt(
'is_admin',
help='set is_admin=True on the credentials used for the evaluation.',
default=False))
conf.register_cli_opt(cfg.StrOpt(
'enforcer_config',
help='configuration file for the oslopolicy-checker enforcer'))
conf()
tool(conf.policy, conf.access, conf.rule, conf.is_admin,
conf.target, conf.enforcer_config)
if __name__ == "__main__":
sys.exit(main())
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