# Copyright 2012 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 datetime
import os
import time
from unittest import mock
import uuid

import fixtures
from keystoneauth1 import exceptions as ksa_exceptions
from keystoneauth1 import fixture
from keystoneauth1 import loading
from keystoneauth1 import session
import oslo_cache
from oslo_log import log as logging
from oslo_serialization import jsonutils
from oslo_utils import timeutils
import pbr.version
import testresources
from testtools import matchers
import webob
import webob.dec

from keystonemiddleware import auth_token
from keystonemiddleware.auth_token import _base
from keystonemiddleware.auth_token import _cache
from keystonemiddleware.auth_token import _exceptions as ksm_exceptions
from keystonemiddleware.tests.unit.auth_token import base
from keystonemiddleware.tests.unit import client_fixtures


EXPECTED_V2_DEFAULT_ENV_RESPONSE = {
    'HTTP_X_IDENTITY_STATUS': 'Confirmed',
    'HTTP_X_TENANT_ID': 'tenant_id1',
    'HTTP_X_TENANT_NAME': 'tenant_name1',
    'HTTP_X_USER_ID': 'user_id1',
    'HTTP_X_USER_NAME': 'user_name1',
    'HTTP_X_ROLES': 'role1,role2',
    'HTTP_X_IS_ADMIN_PROJECT': 'True',
}

EXPECTED_V2_DEFAULT_SERVICE_ENV_RESPONSE = {
    'HTTP_X_SERVICE_IDENTITY_STATUS': 'Confirmed',
    'HTTP_X_SERVICE_PROJECT_ID': 'service_project_id1',
    'HTTP_X_SERVICE_PROJECT_NAME': 'service_project_name1',
    'HTTP_X_SERVICE_USER_ID': 'service_user_id1',
    'HTTP_X_SERVICE_USER_NAME': 'service_user_name1',
    'HTTP_X_SERVICE_ROLES': 'service,service_role2',
}

EXPECTED_V3_DEFAULT_ENV_ADDITIONS = {
    'HTTP_X_PROJECT_DOMAIN_ID': 'domain_id1',
    'HTTP_X_PROJECT_DOMAIN_NAME': 'domain_name1',
    'HTTP_X_USER_DOMAIN_ID': 'domain_id1',
    'HTTP_X_USER_DOMAIN_NAME': 'domain_name1',
    'HTTP_X_IS_ADMIN_PROJECT': 'True'
}

EXPECTED_V3_DEFAULT_SERVICE_ENV_ADDITIONS = {
    'HTTP_X_SERVICE_PROJECT_DOMAIN_ID': 'service_domain_id1',
    'HTTP_X_SERVICE_PROJECT_DOMAIN_NAME': 'service_domain_name1',
    'HTTP_X_SERVICE_USER_DOMAIN_ID': 'service_domain_id1',
    'HTTP_X_SERVICE_USER_DOMAIN_NAME': 'service_domain_name1'
}


BASE_HOST = 'https://keystone.example.com:1234'
BASE_URI = '%s/testadmin' % BASE_HOST
FAKE_ADMIN_TOKEN_ID = 'admin_token2'
FAKE_ADMIN_TOKEN = jsonutils.dumps(
    {'access': {'token': {'id': FAKE_ADMIN_TOKEN_ID,
                          'expires': '%i-10-03T16:58:01Z' %
                          (1 + time.gmtime().tm_year)}}})

VERSION_LIST_v3 = fixture.DiscoveryList(href=BASE_URI)
VERSION_LIST_v2 = fixture.DiscoveryList(v3=False, href=BASE_URI)

ERROR_TOKEN = '7ae290c2a06244c4b41692eb4e9225f2'
TIMEOUT_TOKEN = '4ed1c5e53beee59458adcf8261a8cae2'
ENDPOINT_NOT_FOUND_TOKEN = 'edf9fa62-5afd-4d64-89ac-f99b209bd995'


def strtime(at=None):
    at = at or timeutils.utcnow()
    return at.strftime(timeutils.PERFECT_TIME_FORMAT)


class TimezoneFixture(fixtures.Fixture):
    @staticmethod
    def supported():
        # tzset is only supported on Unix.
        return hasattr(time, 'tzset')

    def __init__(self, new_tz):
        super(TimezoneFixture, self).__init__()
        self.tz = new_tz
        self.old_tz = os.environ.get('TZ')

    def setUp(self):
        super(TimezoneFixture, self).setUp()
        if not self.supported():
            raise NotImplementedError('timezone override is not supported.')
        os.environ['TZ'] = self.tz
        time.tzset()
        self.addCleanup(self.cleanup)

    def cleanup(self):
        if self.old_tz is not None:
            os.environ['TZ'] = self.old_tz
        elif 'TZ' in os.environ:
            del os.environ['TZ']
        time.tzset()


class TimeFixture(fixtures.Fixture):

    def __init__(self, new_time, normalize=True):
        super(TimeFixture, self).__init__()
        if isinstance(new_time, str):
            new_time = timeutils.parse_isotime(new_time)
        if normalize:
            new_time = timeutils.normalize_time(new_time)
        self.new_time = new_time

    def setUp(self):
        super(TimeFixture, self).setUp()
        timeutils.set_time_override(self.new_time)
        self.addCleanup(timeutils.clear_time_override)


class FakeApp(object):
    """This represents a WSGI app protected by the auth_token middleware."""

    SUCCESS = b'SUCCESS'
    FORBIDDEN = b'FORBIDDEN'
    expected_env = {}

    def __init__(self, expected_env=None, need_service_token=False):
        self.expected_env = dict(EXPECTED_V2_DEFAULT_ENV_RESPONSE)

        if expected_env:
            self.expected_env.update(expected_env)

        self.need_service_token = need_service_token

    @webob.dec.wsgify
    def __call__(self, req):
        for k, v in self.expected_env.items():
            assert req.environ[k] == v, '%s != %s' % (req.environ[k], v)

        resp = webob.Response()

        if (req.environ.get('HTTP_X_IDENTITY_STATUS') == 'Invalid' and
                req.environ['HTTP_X_SERVICE_IDENTITY_STATUS'] == 'Invalid'):
            # Simulate delayed auth forbidding access with arbitrary status
            # code to differentiate checking this code path
            resp.status = 419
            resp.body = FakeApp.FORBIDDEN
        elif req.environ.get('HTTP_X_SERVICE_IDENTITY_STATUS') == 'Invalid':
            # Simulate delayed auth forbidding access with arbitrary status
            # code to differentiate checking this code path
            resp.status = 420
            resp.body = FakeApp.FORBIDDEN
        elif req.environ['HTTP_X_IDENTITY_STATUS'] == 'Invalid':
            # Simulate delayed auth forbidding access
            resp.status = 403
            resp.body = FakeApp.FORBIDDEN
        elif (self.need_service_token is True and
              req.environ.get('HTTP_X_SERVICE_TOKEN') is None):
            # Simulate requiring composite auth
            # Arbitrary value to allow checking this code path
            resp.status = 418
            resp.body = FakeApp.FORBIDDEN
        else:
            resp.body = FakeApp.SUCCESS

        return resp


class v3FakeApp(FakeApp):
    """This represents a v3 WSGI app protected by the auth_token middleware."""

    def __init__(self, expected_env=None, need_service_token=False):

        # with v3 additions, these are for the DEFAULT TOKEN
        v3_default_env_additions = dict(EXPECTED_V3_DEFAULT_ENV_ADDITIONS)
        if expected_env:
            v3_default_env_additions.update(expected_env)
        super(v3FakeApp, self).__init__(expected_env=v3_default_env_additions,
                                        need_service_token=need_service_token)


class CompositeBase(object):
    """Base composite auth object with common service token environment."""

    def __init__(self, expected_env=None):
        comp_expected_env = dict(EXPECTED_V2_DEFAULT_SERVICE_ENV_RESPONSE)

        if expected_env:
            comp_expected_env.update(expected_env)

        super(CompositeBase, self).__init__(
            expected_env=comp_expected_env, need_service_token=True)


class CompositeFakeApp(CompositeBase, FakeApp):
    """A fake v2 WSGI app protected by composite auth_token middleware."""

    def __init__(self, expected_env):
        super(CompositeFakeApp, self).__init__(expected_env=expected_env)


class v3CompositeFakeApp(CompositeBase, v3FakeApp):
    """A fake v3 WSGI app protected by composite auth_token middleware."""

    def __init__(self, expected_env=None):

        # with v3 additions, these are for the DEFAULT SERVICE TOKEN
        v3_default_service_env_additions = dict(
            EXPECTED_V3_DEFAULT_SERVICE_ENV_ADDITIONS)

        if expected_env:
            v3_default_service_env_additions.update(expected_env)

        super(v3CompositeFakeApp, self).__init__(
            v3_default_service_env_additions)


class FakeOsloCache(_cache._FakeClient):
    """A fake oslo_cache object.

    The memcache and oslo_cache interfaces are almost the same except we need
    to return NO_VALUE when not found.
    """

    def get(self, key):
        return super(FakeOsloCache, self).get(key) or oslo_cache.NO_VALUE


class BaseAuthTokenMiddlewareTest(base.BaseAuthTokenTestCase):
    """Base test class for auth_token middleware.

    All the tests allow for running with auth_token
    configured for receiving v2 or v3 tokens, with the
    choice being made by passing configuration data into
    setUp().

    The base class will, by default, run all the tests
    expecting v2 token formats.  Child classes can override
    this to specify, for instance, v3 format.

    """

    def setUp(self, expected_env=None, auth_version=None, fake_app=None):
        super(BaseAuthTokenMiddlewareTest, self).setUp()

        self.logger = self.useFixture(fixtures.FakeLogger(level=logging.DEBUG))

        # the default oslo_cache is null cache, always use an in-mem cache
        self.useFixture(fixtures.MockPatchObject(auth_token.AuthProtocol,
                                                 '_create_oslo_cache',
                                                 return_value=FakeOsloCache()))

        self.expected_env = expected_env or dict()
        self.fake_app = fake_app or FakeApp
        self.middleware = None

        self.conf = {
            'identity_uri': 'https://keystone.example.com:1234/testadmin/',
            'auth_version': auth_version,
            'www_authenticate_uri': 'https://keystone.example.com:1234',
            'admin_user': uuid.uuid4().hex,
        }

        self.auth_version = auth_version
        self.response_status = None
        self.response_headers = None

    def call_middleware(self, **kwargs):
        return self.call(self.middleware, **kwargs)

    def set_middleware(self, expected_env=None, conf=None):
        """Configure the class ready to call the auth_token middleware.

        Set up the various fake items needed to run the middleware.
        Individual tests that need to further refine these can call this
        function to override the class defaults.

        """
        if conf:
            self.conf.update(conf)

        if expected_env:
            self.expected_env.update(expected_env)

        self.middleware = auth_token.AuthProtocol(
            self.fake_app(self.expected_env), self.conf)

    def update_expected_env(self, expected_env={}):
        self.middleware._app.expected_env.update(expected_env)

    def purge_token_expected_env(self):
        for key in self.token_expected_env.keys():
            del self.middleware._app.expected_env[key]

    def purge_service_token_expected_env(self):
        for key in self.service_token_expected_env.keys():
            del self.middleware._app.expected_env[key]

    def assertLastPath(self, path):
        if path:
            self.assertEqual(BASE_URI + path,
                             self.requests_mock.last_request.url)
        else:
            self.assertIsNone(self.requests_mock.last_request)


class CachePoolTest(BaseAuthTokenMiddlewareTest):
    def test_use_cache_from_env(self):
        # If `swift.cache` is set in the environment and `cache` is set in the
        # config then the env cache is used.
        env = {'swift.cache': 'CACHE_TEST'}
        conf = {
            'cache': 'swift.cache'
        }
        self.set_middleware(conf=conf)
        self.middleware._token_cache.initialize(env)
        with self.middleware._token_cache._cache_pool.reserve() as cache:
            self.assertEqual(cache, 'CACHE_TEST')

    def test_not_use_cache_from_env(self):
        # If `swift.cache` is set in the environment but `cache` isn't set
        # initialize the config then the env cache isn't used.
        self.set_middleware()
        env = {'swift.cache': 'CACHE_TEST'}
        self.middleware._token_cache.initialize(env)
        with self.middleware._token_cache._cache_pool.reserve() as cache:
            self.assertNotEqual(cache, 'CACHE_TEST')

    def test_multiple_context_managers_share_single_client(self):
        self.set_middleware()
        token_cache = self.middleware._token_cache
        env = {}
        token_cache.initialize(env)

        caches = []

        with token_cache._cache_pool.reserve() as cache:
            caches.append(cache)

        with token_cache._cache_pool.reserve() as cache:
            caches.append(cache)

        self.assertIs(caches[0], caches[1])
        self.assertEqual(set(caches), set(token_cache._cache_pool))

    def test_nested_context_managers_create_multiple_clients(self):
        self.set_middleware()
        env = {}
        self.middleware._token_cache.initialize(env)
        token_cache = self.middleware._token_cache

        with token_cache._cache_pool.reserve() as outer_cache:
            with token_cache._cache_pool.reserve() as inner_cache:
                self.assertNotEqual(outer_cache, inner_cache)

        self.assertEqual(
            set([inner_cache, outer_cache]),
            set(token_cache._cache_pool))


class GeneralAuthTokenMiddlewareTest(BaseAuthTokenMiddlewareTest,
                                     testresources.ResourcedTestCase):
    """General Token Behavior tests.

    These tests are not affected by the token format
    (see CommonAuthTokenMiddlewareTest).
    """

    resources = [('examples', client_fixtures.EXAMPLES_RESOURCE)]

    def test_fixed_cache_key_length(self):
        self.set_middleware()
        short_string = uuid.uuid4().hex
        long_string = 8 * uuid.uuid4().hex

        token_cache = self.middleware._token_cache
        hashed_short_string_key, context_ = token_cache._get_cache_key(
            short_string)
        hashed_long_string_key, context_ = token_cache._get_cache_key(
            long_string)

        # The hash keys should always match in length
        self.assertThat(hashed_short_string_key,
                        matchers.HasLength(len(hashed_long_string_key)))

    def test_conf_values_type_convert(self):
        conf = {
            'identity_uri': 'https://keystone.example.com:1234',
            'include_service_catalog': '0',
            'nonexsit_option': '0',
        }

        middleware = auth_token.AuthProtocol(self.fake_app, conf)
        self.assertFalse(middleware._include_service_catalog)
        self.assertEqual('0', middleware._conf.get('nonexsit_option'))

    def test_deprecated_conf_values(self):
        servers = 'localhost:11211'

        conf = {
            'memcache_servers': servers
        }

        middleware = auth_token.AuthProtocol(self.fake_app, conf)
        self.assertEqual([servers], middleware._conf.get('memcached_servers'))

    def test_conf_values_type_convert_with_wrong_key(self):
        conf = {
            'wrong_key': '123'
        }
        log = 'The option "wrong_key" is not known to keystonemiddleware'
        auth_token.AuthProtocol(self.fake_app, conf)
        self.assertThat(self.logger.output, matchers.Contains(log))

    def test_conf_values_type_convert_with_wrong_value(self):
        conf = {
            'include_service_catalog': '123',
        }
        self.assertRaises(ksm_exceptions.ConfigurationError,
                          auth_token.AuthProtocol, self.fake_app, conf)

    def test_auth_region_name(self):
        token = fixture.V3Token()

        auth_url = 'http://keystone-auth.example.com:5000'
        east_url = 'http://keystone-east.example.com:5000'
        west_url = 'http://keystone-west.example.com:5000'

        auth_versions = fixture.DiscoveryList(href=auth_url)
        east_versions = fixture.DiscoveryList(href=east_url)
        west_versions = fixture.DiscoveryList(href=west_url)

        s = token.add_service('identity')
        s.add_endpoint(interface='internal', url=east_url, region='east')
        s.add_endpoint(interface='internal', url=west_url, region='west')

        self.requests_mock.get(auth_url, json=auth_versions)
        self.requests_mock.get(east_url, json=east_versions)
        self.requests_mock.get(west_url, json=west_versions)

        self.requests_mock.post(
            '%s/v3/auth/tokens' % auth_url,
            headers={'X-Subject-Token': uuid.uuid4().hex},
            json=token)

        east_mock = self.requests_mock.get(
            '%s/v3/auth/tokens' % east_url,
            headers={'X-Subject-Token': uuid.uuid4().hex},
            json=fixture.V3Token())

        west_mock = self.requests_mock.get(
            '%s/v3/auth/tokens' % west_url,
            headers={'X-Subject-Token': uuid.uuid4().hex},
            json=fixture.V3Token())

        loading.register_auth_conf_options(self.cfg.conf,
                                           group=_base.AUTHTOKEN_GROUP)

        opts = loading.get_auth_plugin_conf_options('v3password')
        self.cfg.register_opts(opts, group=_base.AUTHTOKEN_GROUP)

        self.cfg.config(auth_url=auth_url + '/v3',
                        auth_type='v3password',
                        username='user',
                        password='pass',
                        user_domain_id=uuid.uuid4().hex,
                        group=_base.AUTHTOKEN_GROUP)

        self.assertEqual(0, east_mock.call_count)
        self.assertEqual(0, west_mock.call_count)

        east_app = self.create_simple_middleware(conf=dict(region_name='east'))
        self.call(east_app, headers={'X-Auth-Token': uuid.uuid4().hex})

        self.assertEqual(1, east_mock.call_count)
        self.assertEqual(0, west_mock.call_count)

        west_app = self.create_simple_middleware(conf=dict(region_name='west'))

        self.call(west_app, headers={'X-Auth-Token': uuid.uuid4().hex})

        self.assertEqual(1, east_mock.call_count)
        self.assertEqual(1, west_mock.call_count)


class CommonAuthTokenMiddlewareTest(object):
    """These tests are run once using v2 tokens and again using v3 tokens."""

    def test_init_does_not_call_http(self):
        self.create_simple_middleware(conf={})
        self.assertLastPath(None)

    def test_auth_with_no_token_does_not_call_http(self):
        middleware = self.create_simple_middleware()
        self.call(middleware, expected_status=401)
        self.assertLastPath(None)

    def test_init_by_ipv6Addr_auth_host(self):
        del self.conf['identity_uri']
        conf = {
            'auth_host': '2001:2013:1:f101::1',
            'auth_port': '1234',
            'auth_protocol': 'http',
            'www_authenticate_uri': None,
            'auth_version': 'v3.0',
        }
        middleware = self.create_simple_middleware(conf=conf)
        self.assertEqual('http://[2001:2013:1:f101::1]:1234',
                         middleware._www_authenticate_uri)

    def assert_valid_request_200(self, token, with_catalog=True):
        resp = self.call_middleware(headers={'X-Auth-Token': token})
        if with_catalog:
            self.assertTrue(resp.request.headers.get('X-Service-Catalog'))
        else:
            self.assertNotIn('X-Service-Catalog', resp.request.headers)
        self.assertEqual(FakeApp.SUCCESS, resp.body)
        self.assertIn('keystone.token_info', resp.request.environ)
        return resp.request

    def test_valid_uuid_request(self):
        for _ in range(2):  # Do it twice because first result was cached.
            token = self.token_dict['uuid_token_default']
            self.assert_valid_request_200(token)
            self.assert_valid_last_url(token)

    def test_valid_uuid_request_with_auth_fragments(self):
        del self.conf['identity_uri']
        self.conf['auth_protocol'] = 'https'
        self.conf['auth_host'] = 'keystone.example.com'
        self.conf['auth_port'] = '1234'
        self.conf['auth_admin_prefix'] = '/testadmin'
        self.set_middleware()
        self.assert_valid_request_200(self.token_dict['uuid_token_default'])
        self.assert_valid_last_url(self.token_dict['uuid_token_default'])

    def test_request_invalid_uuid_token(self):
        # remember because we are testing the middleware we stub the connection
        # to the keystone server, but this is not what gets returned
        invalid_uri = "%s/v2.0/tokens/invalid-token" % BASE_URI
        self.requests_mock.get(invalid_uri, status_code=404)

        resp = self.call_middleware(headers={'X-Auth-Token': 'invalid-token'},
                                    expected_status=401)
        self.assertEqual('Keystone uri="https://keystone.example.com:1234"',
                         resp.headers['WWW-Authenticate'])

    def test_request_no_token(self):
        resp = self.call_middleware(expected_status=401)
        self.assertEqual('Keystone uri="https://keystone.example.com:1234"',
                         resp.headers['WWW-Authenticate'])

    def test_request_no_token_http(self):
        resp = self.call_middleware(method='HEAD', expected_status=401)
        self.assertEqual('Keystone uri="https://keystone.example.com:1234"',
                         resp.headers['WWW-Authenticate'])

    def test_request_blank_token(self):
        resp = self.call_middleware(headers={'X-Auth-Token': ''},
                                    expected_status=401)
        self.assertEqual('Keystone uri="https://keystone.example.com:1234"',
                         resp.headers['WWW-Authenticate'])

    def _get_cached_token(self, token):
        return self.middleware._token_cache.get(token)

    def test_memcache_set_invalid_uuid(self):
        invalid_uri = "%s/v3/tokens/invalid-token" % BASE_URI
        self.requests_mock.get(invalid_uri, status_code=404)

        token = 'invalid-token'
        self.call_middleware(headers={'X-Auth-Token': token},
                             expected_status=401)

    def test_memcache_set_expired(self, extra_conf={}, extra_environ={}):
        token_cache_time = 10
        conf = {
            'token_cache_time': '%s' % token_cache_time,
        }
        conf.update(extra_conf)
        self.set_middleware(conf=conf)

        token = self.token_dict['uuid_token_default']
        self.call_middleware(headers={'X-Auth-Token': token})

        req = webob.Request.blank('/')
        req.headers['X-Auth-Token'] = token
        req.environ.update(extra_environ)

        now = datetime.datetime.now(datetime.timezone.utc)
        self.useFixture(TimeFixture(now))
        req.get_response(self.middleware)
        self.assertIsNotNone(self._get_cached_token(token))

        timeutils.advance_time_seconds(token_cache_time)
        self.assertIsNone(self._get_cached_token(token))

    def test_swift_memcache_set_expired(self):
        extra_conf = {'cache': 'swift.cache'}
        extra_environ = {'swift.cache': _cache._FakeClient()}
        self.test_memcache_set_expired(extra_conf, extra_environ)

    def test_http_error_not_cached_token(self):
        """Test to don't cache token as invalid on network errors.

        We use UUID tokens since they are the easiest one to reach
        get_http_connection.
        """
        self.set_middleware(conf={'http_request_max_retries': '0'})
        self.call_middleware(headers={'X-Auth-Token': ERROR_TOKEN},
                             expected_status=503)
        self.assertIsNone(self._get_cached_token(ERROR_TOKEN))
        self.assert_valid_last_url(ERROR_TOKEN)

    def test_discovery_failure(self):
        def discovery_failure_response(request, context):
            raise ksa_exceptions.DiscoveryFailure(
                "Could not determine a suitable URL for the plugin")

        self.requests_mock.get(BASE_URI, text=discovery_failure_response)
        self.call_middleware(headers={'X-Auth-Token': 'token'},
                             expected_status=503)
        self.assertIsNone(self._get_cached_token('token'))
        self.assertEqual(BASE_URI, self.requests_mock.last_request.url)

    def test_http_request_max_retries(self):
        times_retry = 10
        body_string = 'The Keystone service is temporarily unavailable.'

        conf = {'http_request_max_retries': '%s' % times_retry}
        self.set_middleware(conf=conf)

        with mock.patch('time.sleep') as mock_obj:
            self.call_middleware(headers={'X-Auth-Token': ERROR_TOKEN},
                                 expected_status=503,
                                 expected_body_string=body_string)

        self.assertEqual(mock_obj.call_count, times_retry)

    def test_request_timeout(self):
        self.call_middleware(headers={'X-Auth-Token': TIMEOUT_TOKEN},
                             expected_status=503)
        self.assertIsNone(self._get_cached_token(TIMEOUT_TOKEN))
        self.assert_valid_last_url(TIMEOUT_TOKEN)

    def test_nocatalog(self):
        conf = {
            'include_service_catalog': 'False'
        }
        self.set_middleware(conf=conf)
        self.assert_valid_request_200(self.token_dict['uuid_token_default'],
                                      with_catalog=False)

    def assert_kerberos_bind(self, token, bind_level,
                             use_kerberos=True, success=True):
        conf = {
            'enforce_token_bind': bind_level,
            'auth_version': self.auth_version,
        }
        self.set_middleware(conf=conf)

        req = webob.Request.blank('/')
        req.headers['X-Auth-Token'] = token

        if use_kerberos:
            if use_kerberos is True:
                req.environ['REMOTE_USER'] = self.examples.KERBEROS_BIND
            else:
                req.environ['REMOTE_USER'] = use_kerberos

            req.environ['AUTH_TYPE'] = 'Negotiate'

        resp = req.get_response(self.middleware)

        if success:
            self.assertEqual(200, resp.status_int)
            self.assertEqual(FakeApp.SUCCESS, resp.body)
            self.assertIn('keystone.token_info', req.environ)
            self.assert_valid_last_url(token)
        else:
            self.assertEqual(401, resp.status_int)
            msg = 'Keystone uri="https://keystone.example.com:1234"'
            self.assertEqual(msg, resp.headers['WWW-Authenticate'])

    def test_uuid_bind_token_disabled_with_kerb_user(self):
        for use_kerberos in [True, False]:
            self.assert_kerberos_bind(self.token_dict['uuid_token_bind'],
                                      bind_level='disabled',
                                      use_kerberos=use_kerberos,
                                      success=True)

    def test_uuid_bind_token_disabled_with_incorrect_ticket(self):
        self.assert_kerberos_bind(self.token_dict['uuid_token_bind'],
                                  bind_level='kerberos',
                                  use_kerberos='ronald@MCDONALDS.COM',
                                  success=False)

    def test_uuid_bind_token_permissive_with_kerb_user(self):
        self.assert_kerberos_bind(self.token_dict['uuid_token_bind'],
                                  bind_level='permissive',
                                  use_kerberos=True,
                                  success=True)

    def test_uuid_bind_token_permissive_without_kerb_user(self):
        self.assert_kerberos_bind(self.token_dict['uuid_token_bind'],
                                  bind_level='permissive',
                                  use_kerberos=False,
                                  success=False)

    def test_uuid_bind_token_permissive_with_unknown_bind(self):
        token = self.token_dict['uuid_token_unknown_bind']

        for use_kerberos in [True, False]:
            self.assert_kerberos_bind(token,
                                      bind_level='permissive',
                                      use_kerberos=use_kerberos,
                                      success=True)

    def test_uuid_bind_token_permissive_with_incorrect_ticket(self):
        self.assert_kerberos_bind(self.token_dict['uuid_token_bind'],
                                  bind_level='kerberos',
                                  use_kerberos='ronald@MCDONALDS.COM',
                                  success=False)

    def test_uuid_bind_token_strict_with_kerb_user(self):
        self.assert_kerberos_bind(self.token_dict['uuid_token_bind'],
                                  bind_level='strict',
                                  use_kerberos=True,
                                  success=True)

    def test_uuid_bind_token_strict_with_kerbout_user(self):
        self.assert_kerberos_bind(self.token_dict['uuid_token_bind'],
                                  bind_level='strict',
                                  use_kerberos=False,
                                  success=False)

    def test_uuid_bind_token_strict_with_unknown_bind(self):
        token = self.token_dict['uuid_token_unknown_bind']

        for use_kerberos in [True, False]:
            self.assert_kerberos_bind(token,
                                      bind_level='strict',
                                      use_kerberos=use_kerberos,
                                      success=False)

    def test_uuid_bind_token_required_with_kerb_user(self):
        self.assert_kerberos_bind(self.token_dict['uuid_token_bind'],
                                  bind_level='required',
                                  use_kerberos=True,
                                  success=True)

    def test_uuid_bind_token_required_without_kerb_user(self):
        self.assert_kerberos_bind(self.token_dict['uuid_token_bind'],
                                  bind_level='required',
                                  use_kerberos=False,
                                  success=False)

    def test_uuid_bind_token_required_with_unknown_bind(self):
        token = self.token_dict['uuid_token_unknown_bind']

        for use_kerberos in [True, False]:
            self.assert_kerberos_bind(token,
                                      bind_level='required',
                                      use_kerberos=use_kerberos,
                                      success=False)

    def test_uuid_bind_token_required_without_bind(self):
        for use_kerberos in [True, False]:
            self.assert_kerberos_bind(self.token_dict['uuid_token_default'],
                                      bind_level='required',
                                      use_kerberos=use_kerberos,
                                      success=False)

    def test_uuid_bind_token_named_kerberos_with_kerb_user(self):
        self.assert_kerberos_bind(self.token_dict['uuid_token_bind'],
                                  bind_level='kerberos',
                                  use_kerberos=True,
                                  success=True)

    def test_uuid_bind_token_named_kerberos_without_kerb_user(self):
        self.assert_kerberos_bind(self.token_dict['uuid_token_bind'],
                                  bind_level='kerberos',
                                  use_kerberos=False,
                                  success=False)

    def test_uuid_bind_token_named_kerberos_with_unknown_bind(self):
        token = self.token_dict['uuid_token_unknown_bind']

        for use_kerberos in [True, False]:
            self.assert_kerberos_bind(token,
                                      bind_level='kerberos',
                                      use_kerberos=use_kerberos,
                                      success=False)

    def test_uuid_bind_token_named_kerberos_without_bind(self):
        for use_kerberos in [True, False]:
            self.assert_kerberos_bind(self.token_dict['uuid_token_default'],
                                      bind_level='kerberos',
                                      use_kerberos=use_kerberos,
                                      success=False)

    def test_uuid_bind_token_named_kerberos_with_incorrect_ticket(self):
        self.assert_kerberos_bind(self.token_dict['uuid_token_bind'],
                                  bind_level='kerberos',
                                  use_kerberos='ronald@MCDONALDS.COM',
                                  success=False)

    def test_uuid_bind_token_with_unknown_named_FOO(self):
        token = self.token_dict['uuid_token_bind']

        for use_kerberos in [True, False]:
            self.assert_kerberos_bind(token,
                                      bind_level='FOO',
                                      use_kerberos=use_kerberos,
                                      success=False)

    def test_caching_token_on_verify(self):
        # When the token is cached it isn't cached again when it's verified.

        # The token cache has to be initialized with our cache instance.
        self.middleware._token_cache._env_cache_name = 'cache'
        cache = _cache._FakeClient()
        self.middleware._token_cache.initialize(env={'cache': cache})

        # Mock cache.set since then the test can verify call_count.
        orig_cache_set = cache.set
        cache.set = mock.Mock(side_effect=orig_cache_set)

        token = self.token_dict['uuid_token_default']

        self.call_middleware(headers={'X-Auth-Token': token})

        self.assertThat(1, matchers.Equals(cache.set.call_count))

        self.call_middleware(headers={'X-Auth-Token': token})

        # Assert that the token wasn't cached again.
        self.assertThat(1, matchers.Equals(cache.set.call_count))

    def test_auth_plugin(self):

        for service_url in (self.examples.UNVERSIONED_SERVICE_URL,
                            self.examples.SERVICE_URL):
            self.requests_mock.get(service_url,
                                   json=VERSION_LIST_v3,
                                   status_code=300)

        token = self.token_dict['uuid_token_default']
        resp = self.call_middleware(headers={'X-Auth-Token': token})
        self.assertEqual(FakeApp.SUCCESS, resp.body)

        token_auth = resp.request.environ['keystone.token_auth']
        endpoint_filter = {'service_type': self.examples.SERVICE_TYPE,
                           'version': 3}

        url = token_auth.get_endpoint(session.Session(), **endpoint_filter)
        self.assertEqual('%s/v3' % BASE_URI, url)

        self.assertTrue(token_auth.has_user_token)
        self.assertFalse(token_auth.has_service_token)
        self.assertIsNone(token_auth.service)

    def test_doesnt_auto_set_content_type(self):
        # webob will set content_type = 'text/html' by default if nothing is
        # provided. We don't want our middleware messing with the content type
        # of the underlying applications.

        text = uuid.uuid4().hex

        def _middleware(environ, start_response):
            start_response(200, [])
            return text

        def _start_response(status_code, headerlist, exc_info=None):
            self.assertIn('200', status_code)  # will be '200 OK'
            self.assertEqual([], headerlist)

        m = auth_token.AuthProtocol(_middleware, self.conf)

        env = {'REQUEST_METHOD': 'GET',
               'HTTP_X_AUTH_TOKEN': self.token_dict['uuid_token_default']}

        r = m(env, _start_response)
        self.assertEqual(text, r)

    def test_auth_plugin_service_token(self):
        url = 'http://test.url'
        text = uuid.uuid4().hex
        self.requests_mock.get(url, text=text)

        token = self.token_dict['uuid_token_default']
        resp = self.call_middleware(headers={'X-Auth-Token': token})

        self.assertEqual(200, resp.status_int)
        self.assertEqual(FakeApp.SUCCESS, resp.body)

        s = session.Session(auth=resp.request.environ['keystone.token_auth'])

        resp = s.get(url)

        self.assertEqual(text, resp.text)
        self.assertEqual(200, resp.status_code)

        headers = self.requests_mock.last_request.headers

        self.assertEqual(FAKE_ADMIN_TOKEN_ID, headers['X-Service-Token'])

    def test_service_token_with_valid_service_role_not_required(self):
        self.conf['service_token_roles'] = ['service']
        self.conf['service_token_roles_required'] = False
        self.set_middleware(conf=self.conf)

        user_token = self.token_dict['uuid_token_default']
        service_token = self.token_dict['uuid_service_token_default']

        resp = self.call_middleware(headers={'X-Auth-Token': user_token,
                                             'X-Service-Token': service_token})

        self.assertEqual('Confirmed',
                         resp.request.headers['X-Service-Identity-Status'])

    def test_service_token_with_invalid_service_role_not_required(self):
        self.conf['service_token_roles'] = [uuid.uuid4().hex]
        self.conf['service_token_roles_required'] = False
        self.set_middleware(conf=self.conf)

        user_token = self.token_dict['uuid_token_default']
        service_token = self.token_dict['uuid_service_token_default']

        resp = self.call_middleware(headers={'X-Auth-Token': user_token,
                                             'X-Service-Token': service_token})

        self.assertEqual('Confirmed',
                         resp.request.headers['X-Service-Identity-Status'])

    def test_service_token_with_valid_service_role_required(self):
        self.conf['service_token_roles'] = ['service']
        self.conf['service_token_roles_required'] = True
        self.set_middleware(conf=self.conf)

        user_token = self.token_dict['uuid_token_default']
        service_token = self.token_dict['uuid_service_token_default']

        resp = self.call_middleware(headers={'X-Auth-Token': user_token,
                                             'X-Service-Token': service_token})

        self.assertEqual('Confirmed',
                         resp.request.headers['X-Service-Identity-Status'])

    def test_service_token_with_invalid_service_role_required(self):
        self.conf['service_token_roles'] = [uuid.uuid4().hex]
        self.conf['service_token_roles_required'] = True
        self.set_middleware(conf=self.conf)

        user_token = self.token_dict['uuid_token_default']
        service_token = self.token_dict['uuid_service_token_default']

        resp = self.call_middleware(headers={'X-Auth-Token': user_token,
                                             'X-Service-Token': service_token},
                                    expected_status=401)

        self.assertEqual('Invalid',
                         resp.request.headers['X-Service-Identity-Status'])


def network_error_response(request, context):
    raise ksa_exceptions.ConnectFailure("Network connection refused.")


def request_timeout_response(request, context):
    raise ksa_exceptions.RequestTimeout(
        "Request to https://host/token/path timed out")


class v3AuthTokenMiddlewareTest(BaseAuthTokenMiddlewareTest,
                                CommonAuthTokenMiddlewareTest,
                                testresources.ResourcedTestCase):
    """Test auth_token middleware with v3 tokens.

    Re-execute the AuthTokenMiddlewareTest class tests, but with the
    auth_token middleware configured to expect v3 tokens back from
    a keystone server.

    This is done by configuring the AuthTokenMiddlewareTest class via
    its Setup(), passing in v3 style data that will then be used by
    the tests themselves.

    """

    resources = [('examples', client_fixtures.EXAMPLES_RESOURCE)]

    def setUp(self):
        super(v3AuthTokenMiddlewareTest, self).setUp(
            auth_version='v3.0',
            fake_app=v3FakeApp)

        self.token_dict = {
            'uuid_token_default': self.examples.v3_UUID_TOKEN_DEFAULT,
            'uuid_token_unscoped': self.examples.v3_UUID_TOKEN_UNSCOPED,
            'uuid_token_bind': self.examples.v3_UUID_TOKEN_BIND,
            'uuid_token_unknown_bind':
            self.examples.v3_UUID_TOKEN_UNKNOWN_BIND,
            'uuid_service_token_default':
            self.examples.v3_UUID_SERVICE_TOKEN_DEFAULT,
        }

        self.requests_mock.get(BASE_URI,
                               json=VERSION_LIST_v3,
                               status_code=300)

        # TODO(jamielennox): auth_token middleware uses a v2 admin token
        # regardless of the auth_version that is set.
        self.requests_mock.post('%s/v2.0/tokens' % BASE_URI,
                                text=FAKE_ADMIN_TOKEN)

        self.requests_mock.get('%s/v3/auth/tokens' % BASE_URI,
                               text=self.token_response,
                               headers={'X-Subject-Token': uuid.uuid4().hex})

        self.set_middleware()

    def token_response(self, request, context):
        auth_id = request.headers.get('X-Auth-Token')
        token_id = request.headers.get('X-Subject-Token')
        self.assertEqual(auth_id, FAKE_ADMIN_TOKEN_ID)

        if token_id == ERROR_TOKEN:
            msg = "Network connection refused."
            raise ksa_exceptions.ConnectFailure(msg)
        elif token_id == TIMEOUT_TOKEN:
            request_timeout_response(request, context)
        elif token_id == ENDPOINT_NOT_FOUND_TOKEN:
            raise ksa_exceptions.EndpointNotFound()

        try:
            response = self.examples.JSON_TOKEN_RESPONSES[token_id]
        except KeyError:
            response = ""
            context.status_code = 404

        return response

    def assert_valid_last_url(self, token_id):
        self.assertLastPath('/v3/auth/tokens')

    def test_valid_unscoped_uuid_request(self):
        # Remove items that won't be in an unscoped token
        delta_expected_env = {
            'HTTP_X_PROJECT_ID': None,
            'HTTP_X_PROJECT_NAME': None,
            'HTTP_X_PROJECT_DOMAIN_ID': None,
            'HTTP_X_PROJECT_DOMAIN_NAME': None,
            'HTTP_X_TENANT_ID': None,
            'HTTP_X_TENANT_NAME': None,
            'HTTP_X_ROLES': '',
            'HTTP_X_TENANT': None,
            'HTTP_X_ROLE': '',
        }
        self.set_middleware(expected_env=delta_expected_env)
        self.assert_valid_request_200(self.examples.v3_UUID_TOKEN_UNSCOPED,
                                      with_catalog=False)
        self.assertLastPath('/v3/auth/tokens')

    def test_valid_system_scoped_token_request(self):
        delta_expected_env = {
            'HTTP_OPENSTACK_SYSTEM_SCOPE': 'all',
            'HTTP_X_PROJECT_ID': None,
            'HTTP_X_PROJECT_NAME': None,
            'HTTP_X_PROJECT_DOMAIN_ID': None,
            'HTTP_X_PROJECT_DOMAIN_NAME': None,
            'HTTP_X_TENANT_ID': None,
            'HTTP_X_TENANT_NAME': None,
            'HTTP_X_TENANT': None
        }
        self.set_middleware(expected_env=delta_expected_env)
        self.assert_valid_request_200(self.examples.v3_SYSTEM_SCOPED_TOKEN)
        self.assertLastPath('/v3/auth/tokens')

    def test_domain_scoped_uuid_request(self):
        # Modify items compared to default token for a domain scope
        delta_expected_env = {
            'HTTP_X_DOMAIN_ID': 'domain_id1',
            'HTTP_X_DOMAIN_NAME': 'domain_name1',
            'HTTP_X_PROJECT_ID': None,
            'HTTP_X_PROJECT_NAME': None,
            'HTTP_X_PROJECT_DOMAIN_ID': None,
            'HTTP_X_PROJECT_DOMAIN_NAME': None,
            'HTTP_X_TENANT_ID': None,
            'HTTP_X_TENANT_NAME': None,
            'HTTP_X_TENANT': None
        }
        self.set_middleware(expected_env=delta_expected_env)
        self.assert_valid_request_200(
            self.examples.v3_UUID_TOKEN_DOMAIN_SCOPED)
        self.assertLastPath('/v3/auth/tokens')

    def test_user_plugin_token_properties(self):
        token = self.examples.v3_UUID_TOKEN_DEFAULT
        token_data = self.examples.TOKEN_RESPONSES[token]
        service = self.examples.v3_UUID_SERVICE_TOKEN_DEFAULT
        service_data = self.examples.TOKEN_RESPONSES[service]

        resp = self.call_middleware(headers={'X-Service-Catalog': '[]',
                                             'X-Auth-Token': token,
                                             'X-Service-Token': service})

        self.assertEqual(FakeApp.SUCCESS, resp.body)

        token_auth = resp.request.environ['keystone.token_auth']

        self.assertTrue(token_auth.has_user_token)
        self.assertTrue(token_auth.has_service_token)

        self.assertEqual(token_data.user_id, token_auth.user.user_id)
        self.assertEqual(token_data.project_id, token_auth.user.project_id)
        self.assertEqual(token_data.user_domain_id,
                         token_auth.user.user_domain_id)
        self.assertEqual(token_data.project_domain_id,
                         token_auth.user.project_domain_id)

        self.assertThat(token_auth.user.role_names, matchers.HasLength(2))
        self.assertIn('role1', token_auth.user.role_names)
        self.assertIn('role2', token_auth.user.role_names)
        self.assertIsNone(token_auth.user.trust_id)

        self.assertEqual(service_data.user_id, token_auth.service.user_id)
        self.assertEqual(service_data.project_id,
                         token_auth.service.project_id)
        self.assertEqual(service_data.user_domain_id,
                         token_auth.service.user_domain_id)
        self.assertEqual(service_data.project_domain_id,
                         token_auth.service.project_domain_id)

        self.assertThat(token_auth.service.role_names, matchers.HasLength(2))
        self.assertIn('service', token_auth.service.role_names)
        self.assertIn('service_role2', token_auth.service.role_names)
        self.assertIsNone(token_auth.service.trust_id)

    def test_expire_stored_in_cache(self):
        # tests the upgrade path from storing a tuple vs just the data in the
        # cache. Can be removed in the future.
        token = 'mytoken'
        data = 'this_data'
        self.set_middleware()
        self.middleware._token_cache.initialize({})
        now = datetime.datetime.now(datetime.timezone.utc)
        delta = datetime.timedelta(hours=1)
        expires = strtime(at=(now + delta))
        self.middleware._token_cache.set(token, (data, expires))
        new_data = self.middleware.fetch_token(token)
        self.assertEqual(data, new_data)

    def test_endpoint_not_found_in_token(self):
        token = ENDPOINT_NOT_FOUND_TOKEN
        self.set_middleware()
        self.middleware._token_cache.initialize({})
        with mock.patch.object(self.middleware._identity_server, 'invalidate',
                               new=mock.Mock()):
            self.assertRaises(ksa_exceptions.EndpointNotFound,
                              self.middleware.fetch_token, token)
            self.assertTrue(self.middleware._identity_server.invalidate.called)

    def test_not_is_admin_project(self):
        token = self.examples.v3_NOT_IS_ADMIN_PROJECT
        self.set_middleware(expected_env={'HTTP_X_IS_ADMIN_PROJECT': 'False'})
        req = self.assert_valid_request_200(token)
        self.assertIs(False,
                      req.environ['keystone.token_auth'].user.is_admin_project)

    def test_service_token_with_valid_service_role_not_required(self):
        s = super(v3AuthTokenMiddlewareTest, self)
        s.test_service_token_with_valid_service_role_not_required()

        e = self.requests_mock.request_history[3].qs.get('allow_expired')
        self.assertEqual(['1'], e)

    def test_service_token_with_invalid_service_role_not_required(self):
        s = super(v3AuthTokenMiddlewareTest, self)
        s.test_service_token_with_invalid_service_role_not_required()

        e = self.requests_mock.request_history[3].qs.get('allow_expired')
        self.assertIsNone(e)

    def test_service_token_with_valid_service_role_required(self):
        s = super(v3AuthTokenMiddlewareTest, self)
        s.test_service_token_with_valid_service_role_required()

        e = self.requests_mock.request_history[3].qs.get('allow_expired')
        self.assertEqual(['1'], e)

    def test_service_token_with_invalid_service_role_required(self):
        s = super(v3AuthTokenMiddlewareTest, self)
        s.test_service_token_with_invalid_service_role_required()

        e = self.requests_mock.request_history[3].qs.get('allow_expired')
        self.assertIsNone(e)

    def test_app_cred_token_without_access_rules(self):
        self.set_middleware(conf={'service_type': 'compute'})
        token = self.examples.v3_APP_CRED_TOKEN
        token_data = self.examples.TOKEN_RESPONSES[token]
        resp = self.call_middleware(headers={'X-Auth-Token': token})
        self.assertEqual(FakeApp.SUCCESS, resp.body)
        token_auth = resp.request.environ['keystone.token_auth']
        self.assertEqual(token_data.application_credential_id,
                         token_auth.user.application_credential_id)

    def test_app_cred_access_rules_token(self):
        self.set_middleware(conf={'service_type': 'compute'})
        token = self.examples.v3_APP_CRED_ACCESS_RULES
        token_data = self.examples.TOKEN_RESPONSES[token]
        resp = self.call_middleware(headers={'X-Auth-Token': token},
                                    expected_status=200,
                                    method='GET', path='/v2.1/servers')
        token_auth = resp.request.environ['keystone.token_auth']
        self.assertEqual(token_data.application_credential_id,
                         token_auth.user.application_credential_id)
        self.assertEqual(token_data.application_credential_access_rules,
                         token_auth.user.application_credential_access_rules)
        resp = self.call_middleware(headers={'X-Auth-Token': token},
                                    expected_status=401,
                                    method='GET',
                                    path='/v2.1/servers/someuuid')
        token_auth = resp.request.environ['keystone.token_auth']
        self.assertEqual(token_data.application_credential_id,
                         token_auth.user.application_credential_id)
        self.assertEqual(token_data.application_credential_access_rules,
                         token_auth.user.application_credential_access_rules)

    def test_app_cred_access_rules_service_request(self):
        self.set_middleware(conf={'service_type': 'image'})
        token = self.examples.v3_APP_CRED_ACCESS_RULES
        headers = {'X-Auth-Token': token}
        self.call_middleware(headers=headers,
                             expected_status=401,
                             method='GET', path='/v2/images')
        service_token = self.examples.v3_UUID_SERVICE_TOKEN_DEFAULT
        headers['X-Service-Token'] = service_token
        self.call_middleware(headers=headers,
                             expected_status=200,
                             method='GET', path='/v2/images')

    def test_app_cred_no_access_rules_token(self):
        self.set_middleware(conf={'service_type': 'compute'})
        token = self.examples.v3_APP_CRED_EMPTY_ACCESS_RULES
        self.call_middleware(headers={'X-Auth-Token': token},
                             expected_status=401,
                             method='GET', path='/v2.1/servers')
        service_token = self.examples.v3_UUID_SERVICE_TOKEN_DEFAULT
        headers = {
            'X-Auth-Token': token,
            'X-Service-Token': service_token
        }
        self.call_middleware(headers=headers, expected_status=401,
                             method='GET', path='/v2.1/servers')

    def test_app_cred_matching_rules(self):
        self.set_middleware(conf={'service_type': 'compute'})
        token = self.examples.v3_APP_CRED_MATCHING_RULES
        self.call_middleware(headers={'X-Auth-Token': token},
                             expected_status=200,
                             method='GET', path='/v2.1/servers/foobar')
        self.call_middleware(headers={'X-Auth-Token': token},
                             expected_status=401,
                             method='GET', path='/v2.1/servers/foobar/barfoo')
        self.set_middleware(conf={'service_type': 'image'})
        self.call_middleware(headers={'X-Auth-Token': token},
                             expected_status=200,
                             method='GET', path='/v2/images/foobar')
        self.call_middleware(headers={'X-Auth-Token': token},
                             expected_status=401,
                             method='GET', path='/v2/images/foobar/barfoo')
        self.set_middleware(conf={'service_type': 'identity'})
        self.call_middleware(headers={'X-Auth-Token': token},
                             expected_status=200,
                             method='GET',
                             path='/v3/projects/123/users/456/roles/member')
        self.set_middleware(conf={'service_type': 'block-storage'})
        self.call_middleware(headers={'X-Auth-Token': token},
                             expected_status=200,
                             method='GET', path='/v3/123/types/456')
        self.call_middleware(headers={'X-Auth-Token': token},
                             expected_status=401,
                             method='GET', path='/v3/123/types')
        self.call_middleware(headers={'X-Auth-Token': token},
                             expected_status=401,
                             method='GET', path='/v2/123/types/456')
        self.set_middleware(conf={'service_type': 'object-store'})
        self.call_middleware(headers={'X-Auth-Token': token},
                             expected_status=200,
                             method='GET', path='/v1/1/2/3')
        self.call_middleware(headers={'X-Auth-Token': token},
                             expected_status=401,
                             method='GET', path='/v1/1/2')
        self.call_middleware(headers={'X-Auth-Token': token},
                             expected_status=401,
                             method='GET', path='/v2/1/2')
        self.call_middleware(headers={'X-Auth-Token': token},
                             expected_status=401,
                             method='GET', path='/info')


class DelayedAuthTests(BaseAuthTokenMiddlewareTest):

    def token_response(self, request, context):
        auth_id = request.headers.get('X-Auth-Token')
        self.assertEqual(auth_id, FAKE_ADMIN_TOKEN_ID)

        if request.headers.get('X-Subject-Token') == ERROR_TOKEN:
            msg = 'Network connection refused.'
            raise ksa_exceptions.ConnectFailure(msg)

        # All others just fail
        context.status_code = 404
        return ''

    def test_header_in_401(self):
        body = uuid.uuid4().hex
        www_authenticate_uri = 'http://local.test'
        conf = {'delay_auth_decision': 'True',
                'auth_version': 'v3',
                'www_authenticate_uri': www_authenticate_uri}

        middleware = self.create_simple_middleware(status='401 Unauthorized',
                                                   body=body,
                                                   conf=conf)
        resp = self.call(middleware, expected_status=401)
        self.assertEqual(body.encode(), resp.body)

        self.assertEqual('Keystone uri="%s"' % www_authenticate_uri,
                         resp.headers['WWW-Authenticate'])

    def test_delayed_auth_values(self):
        conf = {'www_authenticate_uri': 'http://local.test'}
        status = '401 Unauthorized'

        middleware = self.create_simple_middleware(status=status, conf=conf)
        self.assertFalse(middleware._delay_auth_decision)

        for v in ('True', '1', 'on', 'yes'):
            conf = {'delay_auth_decision': v,
                    'www_authenticate_uri': 'http://local.test'}

            middleware = self.create_simple_middleware(status=status,
                                                       conf=conf)
            self.assertTrue(middleware._delay_auth_decision)

        for v in ('False', '0', 'no'):
            conf = {'delay_auth_decision': v,
                    'www_authenticate_uri': 'http://local.test'}

            middleware = self.create_simple_middleware(status=status,
                                                       conf=conf)
            self.assertFalse(middleware._delay_auth_decision)

    def test_auth_plugin_with_no_tokens(self):
        body = uuid.uuid4().hex
        www_authenticate_uri = 'http://local.test'
        conf = {
            'delay_auth_decision': True,
            'www_authenticate_uri': www_authenticate_uri
        }

        middleware = self.create_simple_middleware(body=body, conf=conf)
        resp = self.call(middleware)
        self.assertEqual(body.encode(), resp.body)

        token_auth = resp.request.environ['keystone.token_auth']

        self.assertFalse(token_auth.has_user_token)
        self.assertIsNone(token_auth.user)
        self.assertFalse(token_auth.has_service_token)
        self.assertIsNone(token_auth.service)

    def test_auth_plugin_with_token(self):
        self.requests_mock.get('%s/v3/auth/tokens' % BASE_URI,
                               text=self.token_response,
                               headers={'X-Subject-Token': uuid.uuid4().hex})

        body = uuid.uuid4().hex
        www_authenticate_uri = 'http://local.test'
        conf = {
            'delay_auth_decision': 'True',
            'www_authenticate_uri': www_authenticate_uri,
            'auth_type': 'admin_token',
            'endpoint': '%s/v3' % BASE_URI,
            'token': FAKE_ADMIN_TOKEN_ID,
        }

        middleware = self.create_simple_middleware(body=body, conf=conf)
        resp = self.call(middleware, headers={
            'X-Auth-Token': 'non-keystone-token'})
        self.assertEqual(body.encode(), resp.body)

        token_auth = resp.request.environ['keystone.token_auth']

        self.assertFalse(token_auth.has_user_token)
        self.assertIsNone(token_auth.user)
        self.assertFalse(token_auth.has_service_token)
        self.assertIsNone(token_auth.service)

    def test_auth_plugin_with_token_keystone_down(self):
        self.requests_mock.get('%s/v3/auth/tokens' % BASE_URI,
                               text=self.token_response,
                               headers={'X-Subject-Token': ERROR_TOKEN})

        body = uuid.uuid4().hex
        www_authenticate_uri = 'http://local.test'
        conf = {
            'delay_auth_decision': 'True',
            'www_authenticate_uri': www_authenticate_uri,
            'auth_type': 'admin_token',
            'endpoint': '%s/v3' % BASE_URI,
            'token': FAKE_ADMIN_TOKEN_ID,
            'http_request_max_retries': '0'
        }

        middleware = self.create_simple_middleware(body=body, conf=conf)
        resp = self.call(middleware, headers={'X-Auth-Token': ERROR_TOKEN})
        self.assertEqual(body.encode(), resp.body)

        token_auth = resp.request.environ['keystone.token_auth']

        self.assertFalse(token_auth.has_user_token)
        self.assertIsNone(token_auth.user)
        self.assertFalse(token_auth.has_service_token)
        self.assertIsNone(token_auth.service)


class CommonCompositeAuthTests(object):
    """Test Composite authentication.

    Test the behaviour of adding a service-token.
    """

    def test_composite_auth_ok(self):
        token = self.token_dict['uuid_token_default']
        service_token = self.token_dict['uuid_service_token_default']
        fake_logger = fixtures.FakeLogger(level=logging.DEBUG)
        self.middleware.logger = self.useFixture(fake_logger)
        resp = self.call_middleware(headers={'X-Auth-Token': token,
                                             'X-Service-Token': service_token})
        self.assertEqual(FakeApp.SUCCESS, resp.body)
        expected_env = dict(EXPECTED_V2_DEFAULT_ENV_RESPONSE)
        expected_env.update(EXPECTED_V2_DEFAULT_SERVICE_ENV_RESPONSE)

        # role list may get reordered, check for string pieces individually
        self.assertIn('Received request from user: ', fake_logger.output)
        self.assertIn('user_id %(HTTP_X_USER_ID)s, '
                      'project_id %(HTTP_X_TENANT_ID)s, '
                      'roles ' % expected_env, fake_logger.output)
        self.assertIn('service: user_id %(HTTP_X_SERVICE_USER_ID)s, '
                      'project_id %(HTTP_X_SERVICE_PROJECT_ID)s, '
                      'roles ' % expected_env, fake_logger.output)

        roles = ','.join([expected_env['HTTP_X_SERVICE_ROLES'],
                          expected_env['HTTP_X_ROLES']])

        for r in roles.split(','):
            self.assertIn(r, fake_logger.output)

    def test_composite_auth_invalid_service_token(self):
        token = self.token_dict['uuid_token_default']
        service_token = 'invalid-service-token'
        resp = self.call_middleware(headers={'X-Auth-Token': token,
                                             'X-Service-Token': service_token},
                                    expected_status=401)
        expected_body = b'The request you have made requires authentication.'
        self.assertThat(resp.body, matchers.Contains(expected_body))

    def test_composite_auth_no_service_token(self):
        self.purge_service_token_expected_env()
        req = webob.Request.blank('/')
        req.headers['X-Auth-Token'] = self.token_dict['uuid_token_default']

        # Ensure injection of service headers is not possible
        for key, value in self.service_token_expected_env.items():
            header_key = key[len('HTTP_'):].replace('_', '-')
            req.headers[header_key] = value
        # Check arbitrary headers not removed
        req.headers['X-Foo'] = 'Bar'
        resp = req.get_response(self.middleware)
        for key in self.service_token_expected_env.keys():
            header_key = key[len('HTTP_'):].replace('_', '-')
            self.assertFalse(req.headers.get(header_key))
        self.assertEqual('Bar', req.headers.get('X-Foo'))
        self.assertEqual(418, resp.status_int)
        self.assertEqual(FakeApp.FORBIDDEN, resp.body)

    def test_composite_auth_invalid_user_token(self):
        token = 'invalid-token'
        service_token = self.token_dict['uuid_service_token_default']
        resp = self.call_middleware(headers={'X-Auth-Token': token,
                                             'X-Service-Token': service_token},
                                    expected_status=401)
        expected_body = b'The request you have made requires authentication.'
        self.assertThat(resp.body, matchers.Contains(expected_body))

    def test_composite_auth_no_user_token(self):
        service_token = self.token_dict['uuid_service_token_default']
        resp = self.call_middleware(headers={'X-Service-Token': service_token},
                                    expected_status=401)
        expected_body = b'The request you have made requires authentication.'
        self.assertThat(resp.body, matchers.Contains(expected_body))

    def test_composite_auth_delay_ok(self):
        self.middleware._delay_auth_decision = True
        token = self.token_dict['uuid_token_default']
        service_token = self.token_dict['uuid_service_token_default']
        resp = self.call_middleware(headers={'X-Auth-Token': token,
                                             'X-Service-Token': service_token})
        self.assertEqual(FakeApp.SUCCESS, resp.body)

    def test_composite_auth_delay_invalid_service_token(self):
        self.middleware._delay_auth_decision = True
        self.purge_service_token_expected_env()
        expected_env = {
            'HTTP_X_SERVICE_IDENTITY_STATUS': 'Invalid',
        }
        self.update_expected_env(expected_env)

        token = self.token_dict['uuid_token_default']
        service_token = 'invalid-service-token'
        resp = self.call_middleware(headers={'X-Auth-Token': token,
                                             'X-Service-Token': service_token},
                                    expected_status=420)
        self.assertEqual(FakeApp.FORBIDDEN, resp.body)

    def test_composite_auth_delay_invalid_service_and_user_tokens(self):
        self.middleware._delay_auth_decision = True
        self.purge_service_token_expected_env()
        self.purge_token_expected_env()
        expected_env = {
            'HTTP_X_IDENTITY_STATUS': 'Invalid',
            'HTTP_X_SERVICE_IDENTITY_STATUS': 'Invalid',
        }
        self.update_expected_env(expected_env)

        token = 'invalid-token'
        service_token = 'invalid-service-token'
        resp = self.call_middleware(headers={'X-Auth-Token': token,
                                             'X-Service-Token': service_token},
                                    expected_status=419)
        self.assertEqual(FakeApp.FORBIDDEN, resp.body)

    def test_composite_auth_delay_no_service_token(self):
        self.middleware._delay_auth_decision = True
        self.purge_service_token_expected_env()

        req = webob.Request.blank('/')
        req.headers['X-Auth-Token'] = self.token_dict['uuid_token_default']

        # Ensure injection of service headers is not possible
        for key, value in self.service_token_expected_env.items():
            header_key = key[len('HTTP_'):].replace('_', '-')
            req.headers[header_key] = value
        # Check arbitrary headers not removed
        req.headers['X-Foo'] = 'Bar'
        resp = req.get_response(self.middleware)
        for key in self.service_token_expected_env.keys():
            header_key = key[len('HTTP_'):].replace('_', '-')
            self.assertFalse(req.headers.get(header_key))
        self.assertEqual('Bar', req.headers.get('X-Foo'))
        self.assertEqual(418, resp.status_int)
        self.assertEqual(FakeApp.FORBIDDEN, resp.body)

    def test_composite_auth_delay_invalid_user_token(self):
        self.middleware._delay_auth_decision = True
        self.purge_token_expected_env()
        expected_env = {
            'HTTP_X_IDENTITY_STATUS': 'Invalid',
        }
        self.update_expected_env(expected_env)

        token = 'invalid-token'
        service_token = self.token_dict['uuid_service_token_default']
        resp = self.call_middleware(headers={'X-Auth-Token': token,
                                             'X-Service-Token': service_token},
                                    expected_status=403)
        self.assertEqual(FakeApp.FORBIDDEN, resp.body)

    def test_composite_auth_delay_no_user_token(self):
        self.middleware._delay_auth_decision = True
        self.purge_token_expected_env()
        expected_env = {
            'HTTP_X_IDENTITY_STATUS': 'Invalid',
        }
        self.update_expected_env(expected_env)

        service_token = self.token_dict['uuid_service_token_default']
        resp = self.call_middleware(headers={'X-Service-Token': service_token},
                                    expected_status=403)
        self.assertEqual(FakeApp.FORBIDDEN, resp.body)

    def assert_kerberos_composite_bind(self, user_token, service_token,
                                       bind_level):
        conf = {
            'enforce_token_bind': bind_level,
            'auth_version': self.auth_version,
        }
        self.set_middleware(conf=conf)

        req = webob.Request.blank('/')
        req.headers['X-Auth-Token'] = user_token
        req.headers['X-Service-Token'] = service_token

        req.environ['REMOTE_USER'] = self.examples.SERVICE_KERBEROS_BIND
        req.environ['AUTH_TYPE'] = 'Negotiate'

        resp = req.get_response(self.middleware)

        self.assertEqual(200, resp.status_int)
        self.assertEqual(FakeApp.SUCCESS, resp.body)
        self.assertIn('keystone.token_info', req.environ)

    def test_composite_auth_with_bind(self):
        token = self.token_dict['uuid_token_bind']
        service_token = self.token_dict['uuid_service_token_bind']

        self.assert_kerberos_composite_bind(token,
                                            service_token,
                                            bind_level='required')


class v3CompositeAuthTests(BaseAuthTokenMiddlewareTest,
                           CommonCompositeAuthTests,
                           testresources.ResourcedTestCase):
    """Test auth_token middleware with v3 token based composite auth.

    Execute the Composite auth class tests, but with the
    auth_token middleware configured to expect v3 tokens back from
    a keystone server.
    """

    resources = [('examples', client_fixtures.EXAMPLES_RESOURCE)]

    def setUp(self):
        super(v3CompositeAuthTests, self).setUp(
            auth_version='v3',
            fake_app=v3CompositeFakeApp)

        uuid_token_default = self.examples.v3_UUID_TOKEN_DEFAULT
        uuid_serv_token_default = self.examples.v3_UUID_SERVICE_TOKEN_DEFAULT
        uuid_token_bind = self.examples.v3_UUID_TOKEN_BIND
        uuid_service_token_bind = self.examples.v3_UUID_SERVICE_TOKEN_BIND
        self.token_dict = {
            'uuid_token_default': uuid_token_default,
            'uuid_service_token_default': uuid_serv_token_default,
            'uuid_token_bind': uuid_token_bind,
            'uuid_service_token_bind': uuid_service_token_bind,
        }

        self.requests_mock.get(BASE_URI, json=VERSION_LIST_v3, status_code=300)

        # TODO(jamielennox): auth_token middleware uses a v2 admin token
        # regardless of the auth_version that is set.
        self.requests_mock.post('%s/v2.0/tokens' % BASE_URI,
                                text=FAKE_ADMIN_TOKEN)

        self.requests_mock.get('%s/v3/auth/tokens' % BASE_URI,
                               text=self.token_response,
                               headers={'X-Subject-Token': uuid.uuid4().hex})

        self.token_expected_env = dict(EXPECTED_V2_DEFAULT_ENV_RESPONSE)
        self.token_expected_env.update(EXPECTED_V3_DEFAULT_ENV_ADDITIONS)
        self.service_token_expected_env = dict(
            EXPECTED_V2_DEFAULT_SERVICE_ENV_RESPONSE)
        self.service_token_expected_env.update(
            EXPECTED_V3_DEFAULT_SERVICE_ENV_ADDITIONS)
        self.set_middleware()

    def token_response(self, request, context):
        auth_id = request.headers.get('X-Auth-Token')
        token_id = request.headers.get('X-Subject-Token')
        self.assertEqual(auth_id, FAKE_ADMIN_TOKEN_ID)

        status = 200
        response = ""

        if token_id == ERROR_TOKEN:
            msg = "Network connection refused."
            raise ksa_exceptions.ConnectFailure(msg)
        elif token_id == TIMEOUT_TOKEN:
            request_timeout_response(request, context)

        try:
            response = self.examples.JSON_TOKEN_RESPONSES[token_id]
        except KeyError:
            status = 404

        context.status_code = status
        return response


class OtherTests(BaseAuthTokenMiddlewareTest):

    def setUp(self):
        super(OtherTests, self).setUp()
        self.logger = self.useFixture(fixtures.FakeLogger())

    def test_unknown_server_versions(self):
        versions = fixture.DiscoveryList(v2=False, v3_id='v4', href=BASE_URI)
        self.set_middleware()

        self.requests_mock.get(BASE_URI, json=versions, status_code=300)

        self.call_middleware(headers={'X-Auth-Token': uuid.uuid4().hex},
                             expected_status=503)

        self.assertIn('versions [v3.0]', self.logger.output)

    def _assert_auth_version(self, conf_version, identity_server_version):
        self.set_middleware(conf={'auth_version': conf_version})
        identity_server = self.middleware._create_identity_server()
        self.assertEqual(identity_server_version,
                         identity_server.auth_version)

    def test_micro_version(self):
        self._assert_auth_version('v3', (3, 0))
        self._assert_auth_version('v3.0', (3, 0))
        self._assert_auth_version('v3.1', (3, 0))
        self._assert_auth_version('v3.2', (3, 0))
        self._assert_auth_version('v3.9', (3, 0))
        self._assert_auth_version('v3.3.1', (3, 0))
        self._assert_auth_version('v3.3.5', (3, 0))

    def test_default_auth_version(self):
        # VERSION_LIST_v3 contains both v2 and v3 version elements
        self.requests_mock.get(BASE_URI, json=VERSION_LIST_v3, status_code=300)
        self._assert_auth_version(None, (3, 0))

    def test_unsupported_auth_version(self):
        # If the requested version isn't supported we will use v3
        self._assert_auth_version('v1', (3, 0))
        self._assert_auth_version('v10', (3, 0))


class AuthProtocolLoadingTests(BaseAuthTokenMiddlewareTest):

    AUTH_URL = 'http://auth.url/prefix'
    DISC_URL = 'http://disc.url/prefix'
    KEYSTONE_BASE_URL = 'http://keystone.url/prefix'
    CRUD_URL = 'http://crud.url/prefix'

    KEYSTONE_URL = KEYSTONE_BASE_URL + '/v3'

    def setUp(self):
        super(AuthProtocolLoadingTests, self).setUp()

        self.project_id = uuid.uuid4().hex

        # first touch is to discover the available versions at the auth_url
        self.requests_mock.get(self.AUTH_URL,
                               json=fixture.DiscoveryList(href=self.DISC_URL),
                               status_code=300)

        # then we do discovery on the URL from the service catalog. In practice
        # this is mostly the same URL as before but test the full range.
        self.requests_mock.get(self.KEYSTONE_BASE_URL + '/',
                               json=fixture.DiscoveryList(href=self.CRUD_URL),
                               status_code=300)

    def good_request(self, app):
        # admin_token is the token that the service will get back from auth
        admin_token_id = uuid.uuid4().hex
        admin_token = fixture.V3Token(project_id=self.project_id)
        s = admin_token.add_service('identity', name='keystone')
        s.add_standard_endpoints(internal=self.KEYSTONE_URL)

        self.requests_mock.post('%s/v3/auth/tokens' % self.AUTH_URL,
                                json=admin_token,
                                headers={'X-Subject-Token': admin_token_id})

        # user_token is the data from the user's inputted token
        user_token_id = uuid.uuid4().hex
        user_token = fixture.V3Token()
        user_token.set_project_scope()

        request_headers = {'X-Subject-Token': user_token_id,
                           'X-Auth-Token': admin_token_id}

        self.requests_mock.get('%s/v3/auth/tokens' % self.KEYSTONE_BASE_URL,
                               request_headers=request_headers,
                               json=user_token,
                               headers={'X-Subject-Token': uuid.uuid4().hex})

        resp = self.call(app, headers={'X-Auth-Token': user_token_id})
        return resp

    def test_loading_password_plugin(self):
        # the password options aren't set on config until loading time, but we
        # need them set so we can override the values for testing, so force it
        opts = loading.get_auth_plugin_conf_options('password')
        self.cfg.register_opts(opts, group=_base.AUTHTOKEN_GROUP)

        project_id = uuid.uuid4().hex

        # Register the authentication options
        loading.register_auth_conf_options(self.cfg.conf,
                                           group=_base.AUTHTOKEN_GROUP)

        # configure the authentication options
        self.cfg.config(auth_type='password',
                        username='testuser',
                        password='testpass',
                        auth_url=self.AUTH_URL,
                        project_id=project_id,
                        user_domain_id='userdomainid',
                        group=_base.AUTHTOKEN_GROUP)

        body = uuid.uuid4().hex
        app = self.create_simple_middleware(body=body)

        resp = self.good_request(app)
        self.assertEqual(body.encode(), resp.body)

    @staticmethod
    def get_plugin(app):
        return app._identity_server._adapter.auth

    def test_invalid_plugin_fails_to_initialize(self):
        loading.register_auth_conf_options(self.cfg.conf,
                                           group=_base.AUTHTOKEN_GROUP)
        self.cfg.config(auth_type=uuid.uuid4().hex,
                        group=_base.AUTHTOKEN_GROUP)

        self.assertRaises(
            ksa_exceptions.NoMatchingPlugin,
            self.create_simple_middleware)

    def test_plugin_loading_mixed_opts(self):
        # some options via override and some via conf
        opts = loading.get_auth_plugin_conf_options('password')
        self.cfg.register_opts(opts, group=_base.AUTHTOKEN_GROUP)

        username = 'testuser'
        password = 'testpass'

        # Register the authentication options
        loading.register_auth_conf_options(self.cfg.conf,
                                           group=_base.AUTHTOKEN_GROUP)

        # configure the authentication options
        self.cfg.config(auth_type='password',
                        auth_url='http://keystone.test:5000',
                        password=password,
                        project_id=self.project_id,
                        user_domain_id='userdomainid',
                        group=_base.AUTHTOKEN_GROUP)

        conf = {'username': username, 'auth_url': self.AUTH_URL}

        body = uuid.uuid4().hex
        app = self.create_simple_middleware(body=body, conf=conf)

        resp = self.good_request(app)
        self.assertEqual(body.encode(), resp.body)

        plugin = self.get_plugin(app)

        self.assertEqual(self.AUTH_URL, plugin.auth_url)
        self.assertEqual(username, plugin._username)
        self.assertEqual(password, plugin._password)
        self.assertEqual(self.project_id, plugin._project_id)

    def test_plugin_loading_with_auth_section(self):
        # some options via override and some via conf
        section = 'testsection'
        username = 'testuser'
        password = 'testpass'

        loading.register_auth_conf_options(self.cfg.conf, group=section)
        opts = loading.get_auth_plugin_conf_options('password')
        self.cfg.register_opts(opts, group=section)

        # Register the authentication options
        loading.register_auth_conf_options(self.cfg.conf,
                                           group=_base.AUTHTOKEN_GROUP)

        # configure the authentication options
        self.cfg.config(auth_section=section, group=_base.AUTHTOKEN_GROUP)
        self.cfg.config(auth_type='password',
                        auth_url=self.AUTH_URL,
                        password=password,
                        project_id=self.project_id,
                        user_domain_id='userdomainid',
                        group=section)

        conf = {'username': username}

        body = uuid.uuid4().hex
        app = self.create_simple_middleware(body=body, conf=conf)

        resp = self.good_request(app)
        self.assertEqual(body.encode(), resp.body)

        plugin = self.get_plugin(app)

        self.assertEqual(self.AUTH_URL, plugin.auth_url)
        self.assertEqual(username, plugin._username)
        self.assertEqual(password, plugin._password)
        self.assertEqual(self.project_id, plugin._project_id)


class TestAuthPluginUserAgentGeneration(BaseAuthTokenMiddlewareTest):

    def setUp(self):
        super(TestAuthPluginUserAgentGeneration, self).setUp()
        self.auth_url = uuid.uuid4().hex
        self.project_id = uuid.uuid4().hex
        self.username = uuid.uuid4().hex
        self.password = uuid.uuid4().hex
        self.section = uuid.uuid4().hex
        self.user_domain_id = uuid.uuid4().hex

        loading.register_auth_conf_options(self.cfg.conf, group=self.section)
        opts = loading.get_auth_plugin_conf_options('password')
        self.cfg.register_opts(opts, group=self.section)

        # Register the authentication options
        loading.register_auth_conf_options(self.cfg.conf,
                                           group=_base.AUTHTOKEN_GROUP)

        # configure the authentication options
        self.cfg.config(auth_section=self.section, group=_base.AUTHTOKEN_GROUP)
        self.cfg.config(auth_type='password',
                        password=self.password,
                        project_id=self.project_id,
                        user_domain_id=self.user_domain_id,
                        group=self.section)

    def test_no_project_configured(self):
        ksm_version = uuid.uuid4().hex
        conf = {'username': self.username, 'auth_url': self.auth_url}

        app = self._create_app(conf, '', ksm_version)
        self._assert_user_agent(app, '', ksm_version)

    def test_project_in_configuration(self):
        project = uuid.uuid4().hex
        project_version = uuid.uuid4().hex
        ksm_version = uuid.uuid4().hex

        conf = {'username': self.username,
                'auth_url': self.auth_url,
                'project': project}
        app = self._create_app(conf, project_version, ksm_version)
        project_with_version = '{0}/{1} '.format(project, project_version)
        self._assert_user_agent(app, project_with_version, ksm_version)

    def test_project_not_installed_results_in_unknown_version(self):
        project = uuid.uuid4().hex

        conf = {'username': self.username,
                'auth_url': self.auth_url,
                'project': project}

        v = pbr.version.VersionInfo('keystonemiddleware').version_string()

        app = self.create_simple_middleware(conf=conf, use_global_conf=True)
        project_with_version = '{0}/{1} '.format(project, 'unknown')
        self._assert_user_agent(app, project_with_version, v)

    def test_project_in_oslo_configuration(self):
        project = uuid.uuid4().hex
        project_version = uuid.uuid4().hex
        ksm_version = uuid.uuid4().hex

        conf = {'username': self.username, 'auth_url': self.auth_url}
        with mock.patch.object(self.cfg.conf, 'project',
                               new=project, create=True):
            app = self._create_app(conf, project_version, ksm_version)
        project = '{0}/{1} '.format(project, project_version)
        self._assert_user_agent(app, project, ksm_version)

    def _create_app(self, conf, project_version, ksm_version):
        fake_im = mock.Mock()
        fake_im.return_value = project_version

        fake_version_info = mock.Mock()
        fake_version_info.version_string.return_value = ksm_version
        fake_pbr_version = mock.Mock()
        fake_pbr_version.VersionInfo.return_value = fake_version_info

        body = uuid.uuid4().hex

        at_im = 'keystonemiddleware._common.config.importlib.metadata.version'
        at_pbr = 'keystonemiddleware._common.config.pbr.version'

        with mock.patch(at_im, new=fake_im):
            with mock.patch(at_pbr, new=fake_pbr_version):
                return self.create_simple_middleware(body=body, conf=conf)

    def _assert_user_agent(self, app, project, ksm_version):
        sess = app._identity_server._adapter.session
        expected_ua = ('{0}keystonemiddleware.auth_token/{1}'
                       .format(project, ksm_version))
        self.assertThat(sess.user_agent, matchers.StartsWith(expected_ua))


def load_tests(loader, tests, pattern):
    return testresources.OptimisingTestSuite(tests)