openstack
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keystone
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keystone/tests/test_auth_token_middleware.py

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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2012 OpenStack LLC
#
# 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 iso8601
import os
import string
import tempfile
import webob
from keystone.common import cms
from keystone.common import utils
from keystone.middleware import auth_token
from keystone.openstack.common import jsonutils
from keystone.openstack.common import timeutils
from keystone import test
CERTDIR = test.rootdir("examples/pki/certs")
KEYDIR = test.rootdir("examples/pki/private")
CMSDIR = test.rootdir("examples/pki/cms")
SIGNING_CERT = os.path.join(CERTDIR, 'signing_cert.pem')
SIGNING_KEY = os.path.join(KEYDIR, 'signing_key.pem')
CA = os.path.join(CERTDIR, 'ca.pem')
REVOCATION_LIST = None
REVOKED_TOKEN = None
REVOKED_TOKEN_HASH = None
SIGNED_REVOCATION_LIST = None
SIGNED_TOKEN_SCOPED = None
SIGNED_TOKEN_UNSCOPED = None
SIGNED_TOKEN_SCOPED_KEY = None
SIGNED_TOKEN_UNSCOPED_KEY = None
VALID_SIGNED_REVOCATION_LIST = None
UUID_TOKEN_DEFAULT = "ec6c0710ec2f471498484c1b53ab4f9d"
UUID_TOKEN_NO_SERVICE_CATALOG = '8286720fbe4941e69fa8241723bb02df'
UUID_TOKEN_UNSCOPED = '731f903721c14827be7b2dc912af7776'
VALID_DIABLO_TOKEN = 'b0cf19b55dbb4f20a6ee18e6c6cf1726'
INVALID_SIGNED_TOKEN = string.replace(
"""AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
0000000000000000000000000000000000000000000000000000000000000000
1111111111111111111111111111111111111111111111111111111111111111
2222222222222222222222222222222222222222222222222222222222222222
3333333333333333333333333333333333333333333333333333333333333333
4444444444444444444444444444444444444444444444444444444444444444
5555555555555555555555555555555555555555555555555555555555555555
6666666666666666666666666666666666666666666666666666666666666666
7777777777777777777777777777777777777777777777777777777777777777
8888888888888888888888888888888888888888888888888888888888888888
9999999999999999999999999999999999999999999999999999999999999999
0000000000000000000000000000000000000000000000000000000000000000
xg==""", "\n", "")
# JSON responses keyed by token ID
TOKEN_RESPONSES = {
UUID_TOKEN_DEFAULT: {
'access': {
'token': {
'id': UUID_TOKEN_DEFAULT,
'tenant': {
'id': 'tenant_id1',
'name': 'tenant_name1',
},
},
'user': {
'id': 'user_id1',
'name': 'user_name1',
'roles': [
{'name': 'role1'},
{'name': 'role2'},
],
},
'serviceCatalog': {}
},
},
VALID_DIABLO_TOKEN: {
'access': {
'token': {
'id': VALID_DIABLO_TOKEN,
'tenantId': 'tenant_id1',
},
'user': {
'id': 'user_id1',
'name': 'user_name1',
'roles': [
{'name': 'role1'},
{'name': 'role2'},
],
},
},
},
UUID_TOKEN_UNSCOPED: {
'access': {
'token': {
'id': UUID_TOKEN_UNSCOPED,
},
'user': {
'id': 'user_id1',
'name': 'user_name1',
'roles': [
{'name': 'role1'},
{'name': 'role2'},
],
},
},
},
UUID_TOKEN_NO_SERVICE_CATALOG: {
'access': {
'token': {
'id': 'valid-token',
'tenant': {
'id': 'tenant_id1',
'name': 'tenant_name1',
},
},
'user': {
'id': 'user_id1',
'name': 'user_name1',
'roles': [
{'name': 'role1'},
{'name': 'role2'},
],
}
},
},
}
# The data for these tests are signed using openssl and are stored in files
# in the signing subdirectory. In order to keep the values consistent between
# the tests and the signed documents, we read them in for use in the tests.
def setUpModule(self):
signing_path = CMSDIR
with open(os.path.join(signing_path, 'auth_token_scoped.pem')) as f:
self.SIGNED_TOKEN_SCOPED = cms.cms_to_token(f.read())
with open(os.path.join(signing_path, 'auth_token_unscoped.pem')) as f:
self.SIGNED_TOKEN_UNSCOPED = cms.cms_to_token(f.read())
with open(os.path.join(signing_path, 'auth_token_revoked.pem')) as f:
self.REVOKED_TOKEN = cms.cms_to_token(f.read())
self.REVOKED_TOKEN_HASH = utils.hash_signed_token(self.REVOKED_TOKEN)
with open(os.path.join(signing_path, 'revocation_list.json')) as f:
self.REVOCATION_LIST = jsonutils.loads(f.read())
with open(os.path.join(signing_path, 'revocation_list.pem')) as f:
self.VALID_SIGNED_REVOCATION_LIST = jsonutils.dumps(
{'signed': f.read()})
self.SIGNED_TOKEN_SCOPED_KEY =\
cms.cms_hash_token(self.SIGNED_TOKEN_SCOPED)
self.SIGNED_TOKEN_UNSCOPED_KEY =\
cms.cms_hash_token(self.SIGNED_TOKEN_UNSCOPED)
self.TOKEN_RESPONSES[self.SIGNED_TOKEN_SCOPED_KEY] = {
'access': {
'token': {
'id': self.SIGNED_TOKEN_SCOPED_KEY,
},
'user': {
'id': 'user_id1',
'name': 'user_name1',
'tenantId': 'tenant_id1',
'tenantName': 'tenant_name1',
'roles': [
{'name': 'role1'},
{'name': 'role2'},
],
},
},
}
self.TOKEN_RESPONSES[SIGNED_TOKEN_UNSCOPED_KEY] = {
'access': {
'token': {
'id': SIGNED_TOKEN_UNSCOPED_KEY,
},
'user': {
'id': 'user_id1',
'name': 'user_name1',
'roles': [
{'name': 'role1'},
{'name': 'role2'},
],
},
},
},
class FakeMemcache(object):
def __init__(self):
self.set_key = None
self.set_value = None
self.token_expiration = None
def get(self, key):
data = TOKEN_RESPONSES[SIGNED_TOKEN_SCOPED_KEY].copy()
if not data or key != "tokens/%s" % (data['access']['token']['id']):
return
if not self.token_expiration:
dt = datetime.datetime.now() + datetime.timedelta(minutes=5)
self.token_expiration = dt.strftime("%s")
dt = datetime.datetime.now() + datetime.timedelta(hours=24)
ks_expires = dt.isoformat()
data['access']['token']['expires'] = ks_expires
return (data, str(self.token_expiration))
def set(self, key, value, time=None):
self.set_value = value
self.set_key = key
class FakeHTTPResponse(object):
def __init__(self, status, body):
self.status = status
self.body = body
def read(self):
return self.body
class FakeHTTPConnection(object):
last_requested_url = ''
def __init__(self, *args):
self.send_valid_revocation_list = True
def request(self, method, path, **kwargs):
"""Fakes out several http responses.
If a POST request is made, we assume the calling code is trying
to get a new admin token.
If a GET request is made to validate a token, return success
if the token is 'token1'. If a different token is provided, return
a 404, indicating an unknown (therefore unauthorized) token.
"""
FakeHTTPConnection.last_requested_url = path
if method == 'POST':
status = 200
body = jsonutils.dumps({
'access': {
'token': {'id': 'admin_token2'},
},
})
else:
token_id = path.rsplit('/', 1)[1]
if token_id in TOKEN_RESPONSES.keys():
status = 200
body = jsonutils.dumps(TOKEN_RESPONSES[token_id])
elif token_id == "revoked":
status = 200
body = SIGNED_REVOCATION_LIST
else:
status = 404
body = str()
self.resp = FakeHTTPResponse(status, body)
def getresponse(self):
return self.resp
def close(self):
pass
class FakeApp(object):
"""This represents a WSGI app protected by the auth_token middleware."""
def __init__(self, expected_env=None):
expected_env = expected_env or {}
self.expected_env = {
'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_USER': 'user_name1', # deprecated (diablo-compat)
'HTTP_X_TENANT': 'tenant_name1', # deprecated (diablo-compat)
'HTTP_X_ROLE': 'role1,role2', # deprecated (diablo-compat)
}
self.expected_env.update(expected_env)
def __call__(self, env, start_response):
for k, v in self.expected_env.items():
assert env[k] == v, '%s != %s' % (env[k], v)
resp = webob.Response()
resp.body = 'SUCCESS'
return resp(env, start_response)
class BaseAuthTokenMiddlewareTest(test.TestCase):
def setUp(self, expected_env=None):
expected_env = expected_env or {}
conf = {
'admin_token': 'admin_token1',
'auth_host': 'keystone.example.com',
'auth_port': 1234,
'auth_admin_prefix': '/testadmin',
'signing_dir': CERTDIR,
}
self.middleware = auth_token.AuthProtocol(FakeApp(expected_env), conf)
self.middleware.http_client_class = FakeHTTPConnection
self.middleware._iso8601 = iso8601
self.response_status = None
self.response_headers = None
self.middleware.revoked_file_name = tempfile.mkstemp()[1]
cache_timeout = datetime.timedelta(days=1)
self.middleware.token_revocation_list_cache_timeout = cache_timeout
self.middleware.token_revocation_list = jsonutils.dumps(
{"revoked": [], "extra": "success"})
signed_list = 'SIGNED_REVOCATION_LIST'
valid_signed_list = 'VALID_SIGNED_REVOCATION_LIST'
globals()[signed_list] = globals()[valid_signed_list]
super(BaseAuthTokenMiddlewareTest, self).setUp()
def tearDown(self):
super(BaseAuthTokenMiddlewareTest, self).tearDown()
try:
os.remove(self.middleware.revoked_file_name)
except OSError:
pass
def start_fake_response(self, status, headers):
self.response_status = int(status.split(' ', 1)[0])
self.response_headers = dict(headers)
class DiabloAuthTokenMiddlewareTest(BaseAuthTokenMiddlewareTest):
"""Auth Token middleware should understand Diablo keystone responses."""
def setUp(self):
# pre-diablo only had Tenant ID, which was also the Name
expected_env = {
'HTTP_X_TENANT_ID': 'tenant_id1',
'HTTP_X_TENANT_NAME': 'tenant_id1',
# now deprecated (diablo-compat)
'HTTP_X_TENANT': 'tenant_id1',
}
super(DiabloAuthTokenMiddlewareTest, self).setUp(expected_env)
def test_valid_diablo_response(self):
req = webob.Request.blank('/')
req.headers['X-Auth-Token'] = VALID_DIABLO_TOKEN
self.middleware(req.environ, self.start_fake_response)
self.assertEqual(self.response_status, 200)
class AuthTokenMiddlewareTest(BaseAuthTokenMiddlewareTest):
def assert_valid_request_200(self, token):
req = webob.Request.blank('/')
req.headers['X-Auth-Token'] = token
body = self.middleware(req.environ, self.start_fake_response)
self.assertEqual(self.response_status, 200)
self.assertTrue(req.headers.get('X-Service-Catalog'))
self.assertEqual(body, ['SUCCESS'])
def test_valid_uuid_request(self):
self.assert_valid_request_200(UUID_TOKEN_DEFAULT)
self.assertEqual("/testadmin/v2.0/tokens/%s" % UUID_TOKEN_DEFAULT,
FakeHTTPConnection.last_requested_url)
def test_valid_signed_request(self):
FakeHTTPConnection.last_requested_url = ''
self.assert_valid_request_200(SIGNED_TOKEN_SCOPED)
self.assertEqual(self.middleware.conf['auth_admin_prefix'],
"/testadmin")
#ensure that signed requests do not generate HTTP traffic
self.assertEqual('', FakeHTTPConnection.last_requested_url)
def assert_unscoped_default_tenant_auto_scopes(self, token):
"""Unscoped requests with a default tenant should "auto-scope."
The implied scope is the user's tenant ID.
"""
req = webob.Request.blank('/')
req.headers['X-Auth-Token'] = token
body = self.middleware(req.environ, self.start_fake_response)
self.assertEqual(self.response_status, 200)
self.assertEqual(body, ['SUCCESS'])
def test_default_tenant_uuid_token(self):
self.assert_unscoped_default_tenant_auto_scopes(UUID_TOKEN_DEFAULT)
def test_default_tenant_signed_token(self):
self.assert_unscoped_default_tenant_auto_scopes(SIGNED_TOKEN_SCOPED)
def assert_unscoped_token_receives_401(self, token):
"""Unscoped requests with no default tenant ID should be rejected."""
req = webob.Request.blank('/')
req.headers['X-Auth-Token'] = token
self.middleware(req.environ, self.start_fake_response)
self.assertEqual(self.response_status, 401)
self.assertEqual(self.response_headers['WWW-Authenticate'],
'Keystone uri=\'https://keystone.example.com:1234\'')
def test_unscoped_uuid_token_receives_401(self):
self.assert_unscoped_token_receives_401(UUID_TOKEN_UNSCOPED)
def test_unscoped_pki_token_receives_401(self):
self.assert_unscoped_token_receives_401(SIGNED_TOKEN_UNSCOPED)
def test_revoked_token_receives_401(self):
self.middleware.token_revocation_list = self.get_revocation_list_json()
req = webob.Request.blank('/')
req.headers['X-Auth-Token'] = REVOKED_TOKEN
self.middleware(req.environ, self.start_fake_response)
self.assertEqual(self.response_status, 401)
def get_revocation_list_json(self, token_ids=None):
if token_ids is None:
token_ids = [REVOKED_TOKEN_HASH]
revocation_list = {'revoked': [{'id': x, 'expires': timeutils.utcnow()}
for x in token_ids]}
return jsonutils.dumps(revocation_list)
def test_is_signed_token_revoked_returns_false(self):
#explicitly setting an empty revocation list here to document intent
self.middleware.token_revocation_list = jsonutils.dumps(
{"revoked": [], "extra": "success"})
result = self.middleware.is_signed_token_revoked(REVOKED_TOKEN)
self.assertFalse(result)
def test_is_signed_token_revoked_returns_true(self):
self.middleware.token_revocation_list = self.get_revocation_list_json()
result = self.middleware.is_signed_token_revoked(REVOKED_TOKEN)
self.assertTrue(result)
def test_verify_signed_token_raises_exception_for_revoked_token(self):
self.middleware.token_revocation_list = self.get_revocation_list_json()
with self.assertRaises(auth_token.InvalidUserToken):
self.middleware.verify_signed_token(REVOKED_TOKEN)
def test_verify_signed_token_succeeds_for_unrevoked_token(self):
self.middleware.token_revocation_list = self.get_revocation_list_json()
self.middleware.verify_signed_token(SIGNED_TOKEN_SCOPED)
def test_get_token_revocation_list_fetched_time_returns_min(self):
self.middleware.token_revocation_list_fetched_time = None
self.middleware.revoked_file_name = ''
self.assertEqual(self.middleware.token_revocation_list_fetched_time,
datetime.datetime.min)
def test_get_token_revocation_list_fetched_time_returns_mtime(self):
self.middleware.token_revocation_list_fetched_time = None
mtime = os.path.getmtime(self.middleware.revoked_file_name)
fetched_time = datetime.datetime.fromtimestamp(mtime)
self.assertEqual(self.middleware.token_revocation_list_fetched_time,
fetched_time)
def test_get_token_revocation_list_fetched_time_returns_value(self):
expected = self.middleware._token_revocation_list_fetched_time
self.assertEqual(self.middleware.token_revocation_list_fetched_time,
expected)
def test_get_revocation_list_returns_fetched_list(self):
self.middleware.token_revocation_list_fetched_time = None
os.remove(self.middleware.revoked_file_name)
self.assertEqual(self.middleware.token_revocation_list,
REVOCATION_LIST)
def test_get_revocation_list_returns_current_list_from_memory(self):
self.assertEqual(self.middleware.token_revocation_list,
self.middleware._token_revocation_list)
def test_get_revocation_list_returns_current_list_from_disk(self):
in_memory_list = self.middleware.token_revocation_list
self.middleware._token_revocation_list = None
self.assertEqual(self.middleware.token_revocation_list, in_memory_list)
def test_invalid_revocation_list_raises_service_error(self):
globals()['SIGNED_REVOCATION_LIST'] = "{}"
with self.assertRaises(auth_token.ServiceError):
self.middleware.fetch_revocation_list()
def test_fetch_revocation_list(self):
fetched_list = jsonutils.loads(self.middleware.fetch_revocation_list())
self.assertEqual(fetched_list, REVOCATION_LIST)
def test_request_invalid_uuid_token(self):
req = webob.Request.blank('/')
req.headers['X-Auth-Token'] = 'invalid-token'
self.middleware(req.environ, self.start_fake_response)
self.assertEqual(self.response_status, 401)
self.assertEqual(self.response_headers['WWW-Authenticate'],
'Keystone uri=\'https://keystone.example.com:1234\'')
def test_request_invalid_signed_token(self):
req = webob.Request.blank('/')
req.headers['X-Auth-Token'] = INVALID_SIGNED_TOKEN
self.middleware(req.environ, self.start_fake_response)
self.assertEqual(self.response_status, 401)
self.assertEqual(self.response_headers['WWW-Authenticate'],
'Keystone uri=\'https://keystone.example.com:1234\'')
def test_request_no_token(self):
req = webob.Request.blank('/')
self.middleware(req.environ, self.start_fake_response)
self.assertEqual(self.response_status, 401)
self.assertEqual(self.response_headers['WWW-Authenticate'],
'Keystone uri=\'https://keystone.example.com:1234\'')
def test_request_blank_token(self):
req = webob.Request.blank('/')
req.headers['X-Auth-Token'] = ''
self.middleware(req.environ, self.start_fake_response)
self.assertEqual(self.response_status, 401)
self.assertEqual(self.response_headers['WWW-Authenticate'],
'Keystone uri=\'https://keystone.example.com:1234\'')
def test_memcache(self):
req = webob.Request.blank('/')
req.headers['X-Auth-Token'] = SIGNED_TOKEN_SCOPED
self.middleware._cache = FakeMemcache()
self.middleware(req.environ, self.start_fake_response)
self.assertEqual(self.middleware._cache.set_value, None)
def test_memcache_set_invalid(self):
req = webob.Request.blank('/')
req.headers['X-Auth-Token'] = 'invalid-token'
self.middleware._cache = FakeMemcache()
self.middleware(req.environ, self.start_fake_response)
self.assertEqual(self.middleware._cache.set_value, "invalid")
def test_memcache_set_expired(self):
req = webob.Request.blank('/')
req.headers['X-Auth-Token'] = SIGNED_TOKEN_SCOPED
self.middleware._cache = FakeMemcache()
expired = datetime.datetime.now() - datetime.timedelta(minutes=1)
self.middleware._cache.token_expiration = float(expired.strftime("%s"))
self.middleware(req.environ, self.start_fake_response)
self.assertEqual(len(self.middleware._cache.set_value), 2)
def test_nomemcache(self):
self.disable_module('memcache')
conf = {
'admin_token': 'admin_token1',
'auth_host': 'keystone.example.com',
'auth_port': 1234,
'memcache_servers': 'localhost:11211',
}
auth_token.AuthProtocol(FakeApp(), conf)
def test_request_prevent_service_catalog_injection(self):
req = webob.Request.blank('/')
req.headers['X-Service-Catalog'] = '[]'
req.headers['X-Auth-Token'] = UUID_TOKEN_NO_SERVICE_CATALOG
body = self.middleware(req.environ, self.start_fake_response)
self.assertEqual(self.response_status, 200)
self.assertFalse(req.headers.get('X-Service-Catalog'))
self.assertEqual(body, ['SUCCESS'])
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