4a36519393
jsonutils provides multiple benefits in comparison to pure stdlib json (like using simplejson on Python 2.6). Similar patch was already merged before [1], but since it lacked hacking rule to enforce jsonutils usage, new occurrences of stdlib json module usage were introduced. This patch switches all the code to using jsonutils and adds a hacking rule to enforce the rule. The hacking rule requires that jsonutils module does not mimic as 'json' thru using import renames, so the code was updated not to rename the module when doing import. The hacking rule was shamelessly copied from the corresponding nova review [2]. [1]: https://review.openstack.org/#/c/99760/ [2]: https://review.openstack.org/111296/ Change-Id: Ie7a5bb76445e15cde9fbf9ff3d2101a014637b37
554 lines
23 KiB
Python
554 lines
23 KiB
Python
# Copyright (c) 2012 OpenStack Foundation.
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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
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# 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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"""Test of Policy Engine For Neutron"""
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import urllib2
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import fixtures
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import mock
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import six
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import neutron
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from neutron.api.v2 import attributes
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from neutron.common import exceptions
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from neutron import context
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from neutron import manager
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from neutron.openstack.common import importutils
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from neutron.openstack.common import jsonutils
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from neutron.openstack.common import policy as common_policy
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from neutron import policy
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from neutron.tests import base
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class PolicyFileTestCase(base.BaseTestCase):
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def setUp(self):
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super(PolicyFileTestCase, self).setUp()
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policy.reset()
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self.addCleanup(policy.reset)
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self.context = context.Context('fake', 'fake', is_admin=False)
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self.target = {}
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self.tempdir = self.useFixture(fixtures.TempDir())
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def test_modified_policy_reloads(self):
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def fake_find_config_file(_1, _2):
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return self.tempdir.join('policy')
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with mock.patch.object(neutron.common.utils,
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'find_config_file',
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new=fake_find_config_file):
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tmpfilename = fake_find_config_file(None, None)
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action = "example:test"
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with open(tmpfilename, "w") as policyfile:
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policyfile.write("""{"example:test": ""}""")
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policy.init()
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policy.enforce(self.context, action, self.target)
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with open(tmpfilename, "w") as policyfile:
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policyfile.write("""{"example:test": "!"}""")
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# NOTE(vish): reset stored policy cache so we don't have to
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# sleep(1)
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policy._POLICY_CACHE = {}
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policy.init()
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self.assertRaises(exceptions.PolicyNotAuthorized,
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policy.enforce,
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self.context,
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action,
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self.target)
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class PolicyTestCase(base.BaseTestCase):
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def setUp(self):
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super(PolicyTestCase, self).setUp()
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policy.reset()
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self.addCleanup(policy.reset)
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# NOTE(vish): preload rules to circumvent reloading from file
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policy.init()
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rules = {
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"true": '@',
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"example:allowed": '@',
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"example:denied": '!',
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"example:get_http": "http:http://www.example.com",
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"example:my_file": "role:compute_admin or tenant_id:%(tenant_id)s",
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"example:early_and_fail": "! and @",
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"example:early_or_success": "@ or !",
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"example:lowercase_admin": "role:admin or role:sysadmin",
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"example:uppercase_admin": "role:ADMIN or role:sysadmin",
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}
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# NOTE(vish): then overload underlying rules
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common_policy.set_rules(common_policy.Rules(
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dict((k, common_policy.parse_rule(v))
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for k, v in rules.items())))
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self.context = context.Context('fake', 'fake', roles=['member'])
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self.target = {}
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def test_enforce_nonexistent_action_throws(self):
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action = "example:noexist"
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self.assertRaises(exceptions.PolicyNotAuthorized, policy.enforce,
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self.context, action, self.target)
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def test_enforce_bad_action_throws(self):
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action = "example:denied"
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self.assertRaises(exceptions.PolicyNotAuthorized, policy.enforce,
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self.context, action, self.target)
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def test_check_bad_action_noraise(self):
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action = "example:denied"
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result = policy.check(self.context, action, self.target)
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self.assertEqual(result, False)
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def test_check_non_existent_action(self):
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action = "example:idonotexist"
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result_1 = policy.check(self.context, action, self.target)
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self.assertFalse(result_1)
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result_2 = policy.check(self.context, action, self.target,
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might_not_exist=True)
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self.assertTrue(result_2)
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def test_enforce_good_action(self):
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action = "example:allowed"
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result = policy.enforce(self.context, action, self.target)
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self.assertEqual(result, True)
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def test_enforce_http_true(self):
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def fakeurlopen(url, post_data):
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return six.StringIO("True")
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with mock.patch.object(urllib2, 'urlopen', new=fakeurlopen):
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action = "example:get_http"
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target = {}
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result = policy.enforce(self.context, action, target)
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self.assertEqual(result, True)
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def test_enforce_http_false(self):
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def fakeurlopen(url, post_data):
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return six.StringIO("False")
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with mock.patch.object(urllib2, 'urlopen', new=fakeurlopen):
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action = "example:get_http"
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target = {}
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self.assertRaises(exceptions.PolicyNotAuthorized, policy.enforce,
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self.context, action, target)
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def test_templatized_enforcement(self):
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target_mine = {'tenant_id': 'fake'}
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target_not_mine = {'tenant_id': 'another'}
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action = "example:my_file"
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policy.enforce(self.context, action, target_mine)
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self.assertRaises(exceptions.PolicyNotAuthorized, policy.enforce,
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self.context, action, target_not_mine)
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def test_early_AND_enforcement(self):
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action = "example:early_and_fail"
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self.assertRaises(exceptions.PolicyNotAuthorized, policy.enforce,
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self.context, action, self.target)
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def test_early_OR_enforcement(self):
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action = "example:early_or_success"
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policy.enforce(self.context, action, self.target)
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def test_ignore_case_role_check(self):
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lowercase_action = "example:lowercase_admin"
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uppercase_action = "example:uppercase_admin"
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# NOTE(dprince) we mix case in the Admin role here to ensure
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# case is ignored
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admin_context = context.Context('admin', 'fake', roles=['AdMiN'])
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policy.enforce(admin_context, lowercase_action, self.target)
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policy.enforce(admin_context, uppercase_action, self.target)
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class DefaultPolicyTestCase(base.BaseTestCase):
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def setUp(self):
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super(DefaultPolicyTestCase, self).setUp()
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policy.reset()
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policy.init()
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self.addCleanup(policy.reset)
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self.rules = {
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"default": '',
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"example:exist": '!',
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}
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self._set_rules('default')
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self.context = context.Context('fake', 'fake')
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def _set_rules(self, default_rule):
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rules = common_policy.Rules(
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dict((k, common_policy.parse_rule(v))
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for k, v in self.rules.items()), default_rule)
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common_policy.set_rules(rules)
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def test_policy_called(self):
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self.assertRaises(exceptions.PolicyNotAuthorized, policy.enforce,
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self.context, "example:exist", {})
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def test_not_found_policy_calls_default(self):
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policy.enforce(self.context, "example:noexist", {})
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def test_default_not_found(self):
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self._set_rules("default_noexist")
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self.assertRaises(exceptions.PolicyNotAuthorized, policy.enforce,
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self.context, "example:noexist", {})
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FAKE_RESOURCE_NAME = 'something'
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FAKE_RESOURCE = {"%ss" % FAKE_RESOURCE_NAME:
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{'attr': {'allow_post': True,
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'allow_put': True,
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'is_visible': True,
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'default': None,
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'enforce_policy': True,
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'validate': {'type:dict':
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{'sub_attr_1': {'type:string': None},
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'sub_attr_2': {'type:string': None}}}
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}}}
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class NeutronPolicyTestCase(base.BaseTestCase):
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def setUp(self):
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super(NeutronPolicyTestCase, self).setUp()
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policy.reset()
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policy.init()
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self.addCleanup(policy.reset)
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self.admin_only_legacy = "role:admin"
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self.admin_or_owner_legacy = "role:admin or tenant_id:%(tenant_id)s"
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# Add a Fake 'something' resource to RESOURCE_ATTRIBUTE_MAP
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attributes.RESOURCE_ATTRIBUTE_MAP.update(FAKE_RESOURCE)
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self.rules = dict((k, common_policy.parse_rule(v)) for k, v in {
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"context_is_admin": "role:admin",
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"admin_or_network_owner": "rule:context_is_admin or "
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"tenant_id:%(network:tenant_id)s",
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"admin_or_owner": ("rule:context_is_admin or "
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"tenant_id:%(tenant_id)s"),
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"admin_only": "rule:context_is_admin",
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"regular_user": "role:user",
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"shared": "field:networks:shared=True",
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"external": "field:networks:router:external=True",
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"default": '@',
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"create_network": "rule:admin_or_owner",
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"create_network:shared": "rule:admin_only",
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"update_network": '@',
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"update_network:shared": "rule:admin_only",
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"get_network": "rule:admin_or_owner or "
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"rule:shared or "
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"rule:external",
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"create_port:mac": "rule:admin_or_network_owner",
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"create_something": "rule:admin_or_owner",
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"create_something:attr": "rule:admin_or_owner",
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"create_something:attr:sub_attr_1": "rule:admin_or_owner",
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"create_something:attr:sub_attr_2": "rule:admin_only",
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"get_firewall_policy": "rule:admin_or_owner or "
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"rule:shared",
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"get_firewall_rule": "rule:admin_or_owner or "
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"rule:shared"
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}.items())
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def fakepolicyinit():
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common_policy.set_rules(common_policy.Rules(self.rules))
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def remove_fake_resource():
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del attributes.RESOURCE_ATTRIBUTE_MAP["%ss" % FAKE_RESOURCE_NAME]
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self.patcher = mock.patch.object(neutron.policy,
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'init',
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new=fakepolicyinit)
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self.patcher.start()
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self.addCleanup(remove_fake_resource)
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self.context = context.Context('fake', 'fake', roles=['user'])
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plugin_klass = importutils.import_class(
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"neutron.db.db_base_plugin_v2.NeutronDbPluginV2")
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self.manager_patcher = mock.patch('neutron.manager.NeutronManager')
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fake_manager = self.manager_patcher.start()
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fake_manager_instance = fake_manager.return_value
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fake_manager_instance.plugin = plugin_klass()
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def _test_action_on_attr(self, context, action, attr, value,
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exception=None):
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action = "%s_network" % action
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target = {'tenant_id': 'the_owner', attr: value}
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if exception:
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self.assertRaises(exception, policy.enforce,
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context, action, target)
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else:
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result = policy.enforce(context, action, target)
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self.assertEqual(result, True)
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def _test_nonadmin_action_on_attr(self, action, attr, value,
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exception=None):
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user_context = context.Context('', "user", roles=['user'])
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self._test_action_on_attr(user_context, action, attr,
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value, exception)
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def test_nonadmin_write_on_private_fails(self):
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self._test_nonadmin_action_on_attr('create', 'shared', False,
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exceptions.PolicyNotAuthorized)
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def test_nonadmin_read_on_private_fails(self):
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self._test_nonadmin_action_on_attr('get', 'shared', False,
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exceptions.PolicyNotAuthorized)
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def test_nonadmin_write_on_shared_fails(self):
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self._test_nonadmin_action_on_attr('create', 'shared', True,
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exceptions.PolicyNotAuthorized)
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def test_nonadmin_read_on_shared_succeeds(self):
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self._test_nonadmin_action_on_attr('get', 'shared', True)
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def _test_enforce_adminonly_attribute(self, action):
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admin_context = context.get_admin_context()
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target = {'shared': True}
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result = policy.enforce(admin_context, action, target)
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self.assertEqual(result, True)
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def test_enforce_adminonly_attribute_create(self):
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self._test_enforce_adminonly_attribute('create_network')
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def test_enforce_adminonly_attribute_update(self):
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self._test_enforce_adminonly_attribute('update_network')
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def test_enforce_adminonly_attribute_no_context_is_admin_policy(self):
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del self.rules[policy.ADMIN_CTX_POLICY]
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self.rules['admin_only'] = common_policy.parse_rule(
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self.admin_only_legacy)
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self.rules['admin_or_owner'] = common_policy.parse_rule(
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self.admin_or_owner_legacy)
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self._test_enforce_adminonly_attribute('create_network')
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def test_enforce_adminonly_attribute_nonadminctx_returns_403(self):
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action = "create_network"
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target = {'shared': True, 'tenant_id': 'somebody_else'}
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self.assertRaises(exceptions.PolicyNotAuthorized, policy.enforce,
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self.context, action, target)
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def test_enforce_adminonly_nonadminctx_no_ctx_is_admin_policy_403(self):
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del self.rules[policy.ADMIN_CTX_POLICY]
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self.rules['admin_only'] = common_policy.parse_rule(
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self.admin_only_legacy)
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self.rules['admin_or_owner'] = common_policy.parse_rule(
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self.admin_or_owner_legacy)
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action = "create_network"
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target = {'shared': True, 'tenant_id': 'somebody_else'}
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self.assertRaises(exceptions.PolicyNotAuthorized, policy.enforce,
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self.context, action, target)
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def _test_build_subattribute_match_rule(self, validate_value):
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bk = FAKE_RESOURCE['%ss' % FAKE_RESOURCE_NAME]['attr']['validate']
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FAKE_RESOURCE['%ss' % FAKE_RESOURCE_NAME]['attr']['validate'] = (
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validate_value)
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action = "create_something"
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target = {'tenant_id': 'fake', 'attr': {'sub_attr_1': 'x'}}
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self.assertFalse(policy._build_subattr_match_rule(
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'attr',
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FAKE_RESOURCE['%ss' % FAKE_RESOURCE_NAME]['attr'],
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action,
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target))
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FAKE_RESOURCE['%ss' % FAKE_RESOURCE_NAME]['attr']['validate'] = bk
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def test_build_subattribute_match_rule_empty_dict_validator(self):
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self._test_build_subattribute_match_rule({})
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def test_build_subattribute_match_rule_wrong_validation_info(self):
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self._test_build_subattribute_match_rule(
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{'type:dict': 'wrong_stuff'})
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def test_enforce_subattribute(self):
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action = "create_something"
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target = {'tenant_id': 'fake', 'attr': {'sub_attr_1': 'x'}}
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result = policy.enforce(self.context, action, target, None)
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self.assertEqual(result, True)
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def test_enforce_admin_only_subattribute(self):
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action = "create_something"
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target = {'tenant_id': 'fake', 'attr': {'sub_attr_1': 'x',
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'sub_attr_2': 'y'}}
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result = policy.enforce(context.get_admin_context(),
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action, target, None)
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self.assertEqual(result, True)
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def test_enforce_admin_only_subattribute_nonadminctx_returns_403(self):
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action = "create_something"
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target = {'tenant_id': 'fake', 'attr': {'sub_attr_1': 'x',
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'sub_attr_2': 'y'}}
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self.assertRaises(exceptions.PolicyNotAuthorized, policy.enforce,
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self.context, action, target, None)
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def test_enforce_regularuser_on_read(self):
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action = "get_network"
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target = {'shared': True, 'tenant_id': 'somebody_else'}
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result = policy.enforce(self.context, action, target)
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self.assertTrue(result)
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def test_enforce_firewall_policy_shared(self):
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action = "get_firewall_policy"
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target = {'shared': True, 'tenant_id': 'somebody_else'}
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result = policy.enforce(self.context, action, target)
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self.assertTrue(result)
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def test_enforce_firewall_rule_shared(self):
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action = "get_firewall_rule"
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target = {'shared': True, 'tenant_id': 'somebody_else'}
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result = policy.enforce(self.context, action, target)
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self.assertTrue(result)
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def test_enforce_tenant_id_check(self):
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# Trigger a policy with rule admin_or_owner
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action = "create_network"
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target = {'tenant_id': 'fake'}
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result = policy.enforce(self.context, action, target)
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self.assertTrue(result)
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def test_enforce_tenant_id_check_parent_resource(self):
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def fakegetnetwork(*args, **kwargs):
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return {'tenant_id': 'fake'}
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action = "create_port:mac"
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with mock.patch.object(manager.NeutronManager.get_instance().plugin,
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'get_network', new=fakegetnetwork):
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target = {'network_id': 'whatever'}
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result = policy.enforce(self.context, action, target)
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self.assertTrue(result)
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def test_enforce_plugin_failure(self):
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def fakegetnetwork(*args, **kwargs):
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raise NotImplementedError('Blast!')
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# the policy check and plugin method we use in this test are irrelevant
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# so long that we verify that, if *f* blows up, the behavior of the
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# policy engine to propagate the exception is preserved
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action = "create_port:mac"
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with mock.patch.object(manager.NeutronManager.get_instance().plugin,
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'get_network', new=fakegetnetwork):
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target = {'network_id': 'whatever'}
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self.assertRaises(NotImplementedError,
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policy.enforce,
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self.context,
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action,
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target)
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def test_enforce_tenant_id_check_parent_resource_bw_compatibility(self):
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def fakegetnetwork(*args, **kwargs):
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return {'tenant_id': 'fake'}
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del self.rules['admin_or_network_owner']
|
|
self.rules['admin_or_network_owner'] = common_policy.parse_rule(
|
|
"role:admin or tenant_id:%(network_tenant_id)s")
|
|
action = "create_port:mac"
|
|
with mock.patch.object(manager.NeutronManager.get_instance().plugin,
|
|
'get_network', new=fakegetnetwork):
|
|
target = {'network_id': 'whatever'}
|
|
result = policy.enforce(self.context, action, target)
|
|
self.assertTrue(result)
|
|
|
|
def test_tenant_id_check_no_target_field_raises(self):
|
|
# Try and add a bad rule
|
|
self.assertRaises(
|
|
exceptions.PolicyInitError,
|
|
common_policy.parse_rule,
|
|
'tenant_id:(wrong_stuff)')
|
|
|
|
def _test_enforce_tenant_id_raises(self, bad_rule):
|
|
self.rules['admin_or_owner'] = common_policy.parse_rule(bad_rule)
|
|
# Trigger a policy with rule admin_or_owner
|
|
action = "create_network"
|
|
target = {'tenant_id': 'fake'}
|
|
policy.init()
|
|
self.assertRaises(exceptions.PolicyCheckError,
|
|
policy.enforce,
|
|
self.context, action, target)
|
|
|
|
def test_enforce_tenant_id_check_malformed_target_field_raises(self):
|
|
self._test_enforce_tenant_id_raises('tenant_id:%(malformed_field)s')
|
|
|
|
def test_enforce_tenant_id_check_invalid_parent_resource_raises(self):
|
|
self._test_enforce_tenant_id_raises('tenant_id:%(foobaz_tenant_id)s')
|
|
|
|
def test_get_roles_context_is_admin_rule_missing(self):
|
|
rules = dict((k, common_policy.parse_rule(v)) for k, v in {
|
|
"some_other_rule": "role:admin",
|
|
}.items())
|
|
common_policy.set_rules(common_policy.Rules(rules))
|
|
# 'admin' role is expected for bw compatibility
|
|
self.assertEqual(['admin'], policy.get_admin_roles())
|
|
|
|
def test_get_roles_with_role_check(self):
|
|
rules = dict((k, common_policy.parse_rule(v)) for k, v in {
|
|
policy.ADMIN_CTX_POLICY: "role:admin",
|
|
}.items())
|
|
common_policy.set_rules(common_policy.Rules(rules))
|
|
self.assertEqual(['admin'], policy.get_admin_roles())
|
|
|
|
def test_get_roles_with_rule_check(self):
|
|
rules = dict((k, common_policy.parse_rule(v)) for k, v in {
|
|
policy.ADMIN_CTX_POLICY: "rule:some_other_rule",
|
|
"some_other_rule": "role:admin",
|
|
}.items())
|
|
common_policy.set_rules(common_policy.Rules(rules))
|
|
self.assertEqual(['admin'], policy.get_admin_roles())
|
|
|
|
def test_get_roles_with_or_check(self):
|
|
self.rules = dict((k, common_policy.parse_rule(v)) for k, v in {
|
|
policy.ADMIN_CTX_POLICY: "rule:rule1 or rule:rule2",
|
|
"rule1": "role:admin_1",
|
|
"rule2": "role:admin_2"
|
|
}.items())
|
|
self.assertEqual(['admin_1', 'admin_2'],
|
|
policy.get_admin_roles())
|
|
|
|
def test_get_roles_with_other_rules(self):
|
|
self.rules = dict((k, common_policy.parse_rule(v)) for k, v in {
|
|
policy.ADMIN_CTX_POLICY: "role:xxx or other:value",
|
|
}.items())
|
|
self.assertEqual(['xxx'], policy.get_admin_roles())
|
|
|
|
def _test_set_rules_with_deprecated_policy(self, input_rules,
|
|
expected_rules):
|
|
policy._set_rules(jsonutils.dumps(input_rules))
|
|
# verify deprecated policy has been removed
|
|
for pol in input_rules.keys():
|
|
self.assertNotIn(pol, common_policy._rules)
|
|
# verify deprecated policy was correctly translated. Iterate
|
|
# over items for compatibility with unittest2 in python 2.6
|
|
for rule in expected_rules:
|
|
self.assertIn(rule, common_policy._rules)
|
|
self.assertEqual(str(common_policy._rules[rule]),
|
|
expected_rules[rule])
|
|
|
|
def test_set_rules_with_deprecated_view_policy(self):
|
|
self._test_set_rules_with_deprecated_policy(
|
|
{'extension:router:view': 'rule:admin_or_owner'},
|
|
{'get_network:router:external': 'rule:admin_or_owner'})
|
|
|
|
def test_set_rules_with_deprecated_set_policy(self):
|
|
expected_policies = ['create_network:provider:network_type',
|
|
'create_network:provider:physical_network',
|
|
'create_network:provider:segmentation_id',
|
|
'update_network:provider:network_type',
|
|
'update_network:provider:physical_network',
|
|
'update_network:provider:segmentation_id']
|
|
self._test_set_rules_with_deprecated_policy(
|
|
{'extension:provider_network:set': 'rule:admin_only'},
|
|
dict((policy, 'rule:admin_only') for policy in
|
|
expected_policies))
|