keystone/keystone/tests/unit/test_exception.py
Brant Knudson 2afad4dc30 Config option for insecure responses
oslo.log's "debug" option was co-opted to also indicate that the
responses should include more information. A separate config
option should be used instead so that deployers don't mistakenly
expose themselves to security issues.

The debug option still is used for what it does in oslo.log and
how it works on all other projects -- if you're not using a log
config file it sets the base logger to debug.

SecurityImpact

Change-Id: Icf8dd2f0b88abc89092d487bbcefb525960c4ec6
Closes-Bug: 1479523
2015-11-19 08:16:07 -06:00

274 lines
10 KiB
Python

# 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 uuid
from oslo_config import cfg
from oslo_config import fixture as config_fixture
from oslo_serialization import jsonutils
import six
from keystone.common import wsgi
from keystone import exception
from keystone.tests import unit
class ExceptionTestCase(unit.BaseTestCase):
def assertValidJsonRendering(self, e):
resp = wsgi.render_exception(e)
self.assertEqual(e.code, resp.status_int)
self.assertEqual('%s %s' % (e.code, e.title), resp.status)
j = jsonutils.loads(resp.body)
self.assertIsNotNone(j.get('error'))
self.assertIsNotNone(j['error'].get('code'))
self.assertIsNotNone(j['error'].get('title'))
self.assertIsNotNone(j['error'].get('message'))
self.assertNotIn('\n', j['error']['message'])
self.assertNotIn(' ', j['error']['message'])
self.assertTrue(type(j['error']['code']) is int)
def test_all_json_renderings(self):
"""Everything callable in the exception module should be renderable.
... except for the base error class (exception.Error), which is not
user-facing.
This test provides a custom message to bypass docstring parsing, which
should be tested separately.
"""
for cls in [x for x in exception.__dict__.values() if callable(x)]:
if cls is not exception.Error and isinstance(cls, exception.Error):
self.assertValidJsonRendering(cls(message='Overridden.'))
def test_validation_error(self):
target = uuid.uuid4().hex
attribute = uuid.uuid4().hex
e = exception.ValidationError(target=target, attribute=attribute)
self.assertValidJsonRendering(e)
self.assertIn(target, six.text_type(e))
self.assertIn(attribute, six.text_type(e))
def test_not_found(self):
target = uuid.uuid4().hex
e = exception.NotFound(target=target)
self.assertValidJsonRendering(e)
self.assertIn(target, six.text_type(e))
def test_forbidden_title(self):
e = exception.Forbidden()
resp = wsgi.render_exception(e)
j = jsonutils.loads(resp.body)
self.assertEqual('Forbidden', e.title)
self.assertEqual('Forbidden', j['error'].get('title'))
def test_unicode_message(self):
message = u'Comment \xe7a va'
e = exception.Error(message)
try:
self.assertEqual(message, six.text_type(e))
except UnicodeEncodeError:
self.fail("unicode error message not supported")
def test_unicode_string(self):
e = exception.ValidationError(attribute='xx',
target='Long \xe2\x80\x93 Dash')
if six.PY2:
self.assertIn(u'\u2013', six.text_type(e))
else:
self.assertIn('Long \xe2\x80\x93 Dash', six.text_type(e))
def test_invalid_unicode_string(self):
# NOTE(jamielennox): This is a complete failure case so what is
# returned in the exception message is not that important so long
# as there is an error with a message
e = exception.ValidationError(attribute='xx',
target='\xe7a va')
if six.PY2:
self.assertIn('%(attribute)', six.text_type(e))
else:
# There's no UnicodeDecodeError on python 3.
self.assertIn('\xe7a va', six.text_type(e))
class UnexpectedExceptionTestCase(ExceptionTestCase):
"""Tests if internal info is exposed to the API user on UnexpectedError."""
class SubClassExc(exception.UnexpectedError):
debug_message_format = 'Debug Message: %(debug_info)s'
def setUp(self):
super(UnexpectedExceptionTestCase, self).setUp()
self.exc_str = uuid.uuid4().hex
self.config_fixture = self.useFixture(config_fixture.Config(cfg.CONF))
def test_unexpected_error_no_debug(self):
self.config_fixture.config(debug=False)
e = exception.UnexpectedError(exception=self.exc_str)
self.assertNotIn(self.exc_str, six.text_type(e))
def test_unexpected_error_debug(self):
self.config_fixture.config(debug=True, insecure_debug=True)
e = exception.UnexpectedError(exception=self.exc_str)
self.assertIn(self.exc_str, six.text_type(e))
def test_unexpected_error_subclass_no_debug(self):
self.config_fixture.config(debug=False)
e = UnexpectedExceptionTestCase.SubClassExc(
debug_info=self.exc_str)
self.assertEqual(exception.UnexpectedError.message_format,
six.text_type(e))
def test_unexpected_error_subclass_debug(self):
self.config_fixture.config(debug=True, insecure_debug=True)
subclass = self.SubClassExc
e = subclass(debug_info=self.exc_str)
expected = subclass.debug_message_format % {'debug_info': self.exc_str}
self.assertEqual(
'%s %s' % (expected, exception.SecurityError.amendment),
six.text_type(e))
def test_unexpected_error_custom_message_no_debug(self):
self.config_fixture.config(debug=False)
e = exception.UnexpectedError(self.exc_str)
self.assertEqual(exception.UnexpectedError.message_format,
six.text_type(e))
def test_unexpected_error_custom_message_debug(self):
self.config_fixture.config(debug=True, insecure_debug=True)
e = exception.UnexpectedError(self.exc_str)
self.assertEqual(
'%s %s' % (self.exc_str, exception.SecurityError.amendment),
six.text_type(e))
def test_unexpected_error_custom_message_exception_debug(self):
self.config_fixture.config(debug=True, insecure_debug=True)
orig_e = exception.NotFound(target=uuid.uuid4().hex)
e = exception.UnexpectedError(orig_e)
self.assertEqual(
'%s %s' % (six.text_type(orig_e),
exception.SecurityError.amendment),
six.text_type(e))
def test_unexpected_error_custom_message_binary_debug(self):
self.config_fixture.config(debug=True, insecure_debug=True)
binary_msg = b'something'
e = exception.UnexpectedError(binary_msg)
self.assertEqual(
'%s %s' % (six.text_type(binary_msg),
exception.SecurityError.amendment),
six.text_type(e))
class SecurityErrorTestCase(ExceptionTestCase):
"""Tests whether security-related info is exposed to the API user."""
def setUp(self):
super(SecurityErrorTestCase, self).setUp()
self.config_fixture = self.useFixture(config_fixture.Config(cfg.CONF))
def test_unauthorized_exposure(self):
self.config_fixture.config(debug=False)
risky_info = uuid.uuid4().hex
e = exception.Unauthorized(message=risky_info)
self.assertValidJsonRendering(e)
self.assertNotIn(risky_info, six.text_type(e))
def test_unauthorized_exposure_in_debug(self):
self.config_fixture.config(debug=True, insecure_debug=True)
risky_info = uuid.uuid4().hex
e = exception.Unauthorized(message=risky_info)
self.assertValidJsonRendering(e)
self.assertIn(risky_info, six.text_type(e))
def test_forbidden_exposure(self):
self.config_fixture.config(debug=False)
risky_info = uuid.uuid4().hex
e = exception.Forbidden(message=risky_info)
self.assertValidJsonRendering(e)
self.assertNotIn(risky_info, six.text_type(e))
def test_forbidden_exposure_in_debug(self):
self.config_fixture.config(debug=True, insecure_debug=True)
risky_info = uuid.uuid4().hex
e = exception.Forbidden(message=risky_info)
self.assertValidJsonRendering(e)
self.assertIn(risky_info, six.text_type(e))
def test_forbidden_action_exposure(self):
self.config_fixture.config(debug=False)
risky_info = uuid.uuid4().hex
action = uuid.uuid4().hex
e = exception.ForbiddenAction(message=risky_info, action=action)
self.assertValidJsonRendering(e)
self.assertNotIn(risky_info, six.text_type(e))
self.assertIn(action, six.text_type(e))
self.assertNotIn(exception.SecurityError.amendment, six.text_type(e))
e = exception.ForbiddenAction(action=action)
self.assertValidJsonRendering(e)
self.assertIn(action, six.text_type(e))
self.assertNotIn(exception.SecurityError.amendment, six.text_type(e))
def test_forbidden_action_exposure_in_debug(self):
self.config_fixture.config(debug=True, insecure_debug=True)
risky_info = uuid.uuid4().hex
action = uuid.uuid4().hex
e = exception.ForbiddenAction(message=risky_info, action=action)
self.assertValidJsonRendering(e)
self.assertIn(risky_info, six.text_type(e))
self.assertIn(exception.SecurityError.amendment, six.text_type(e))
e = exception.ForbiddenAction(action=action)
self.assertValidJsonRendering(e)
self.assertIn(action, six.text_type(e))
self.assertNotIn(exception.SecurityError.amendment, six.text_type(e))
def test_forbidden_action_no_message(self):
# When no custom message is given when the ForbiddenAction (or other
# SecurityError subclass) is created the exposed message is the same
# whether debug is enabled or not.
action = uuid.uuid4().hex
self.config_fixture.config(debug=False)
e = exception.ForbiddenAction(action=action)
exposed_message = six.text_type(e)
self.assertIn(action, exposed_message)
self.assertNotIn(exception.SecurityError.amendment, six.text_type(e))
self.config_fixture.config(debug=True)
e = exception.ForbiddenAction(action=action)
self.assertEqual(exposed_message, six.text_type(e))
def test_unicode_argument_message(self):
self.config_fixture.config(debug=False)
risky_info = u'\u7ee7\u7eed\u884c\u7f29\u8fdb\u6216'
e = exception.Forbidden(message=risky_info)
self.assertValidJsonRendering(e)
self.assertNotIn(risky_info, six.text_type(e))