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# -*- coding: utf-8 -*-
# test_srpauth.py
# Copyright (C) 2013 LEAP
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
Tests for leap/crypto/srpauth.py
"""
try:
import unittest
except ImportError:
import unittest
import os
import sys
from mock import MagicMock
from nose.twistedtools import reactor, threaded_reactor, stop_reactor
from twisted.python import log
from leap.common.testing.https_server import where
from leap.config.providerconfig import ProviderConfig
from leap.crypto import srpauth
from leap.crypto import srpregister
from leap.crypto.tests import fake_provider
log.startLogging(sys.stdout)
def _get_capath():
return where("cacert.pem")
_here = os.path.split(__file__)[0]
class ImproperlyConfiguredError(Exception):
"""
Raised if the test provider is missing configuration
"""
class SRPRegisterTestCase(unittest.TestCase):
"""
Tests for the SRP Authentication class
"""
__name__ = "SRPAuth tests"
@classmethod
def setUpClass(cls):
"""
Sets up this TestCase with a simple and faked provider instance:
* runs a threaded reactor
* loads a mocked ProviderConfig that points to the certs in the
leap.common.testing module.
"""
factory = fake_provider.get_provider_factory()
reactor.listenTCP(8000, factory)
reactor.listenSSL(
8443, factory,
fake_provider.OpenSSLServerContextFactory())
threaded_reactor()
provider = ProviderConfig()
provider.get_ca_cert_path = MagicMock()
provider.get_ca_cert_path.return_value = _get_capath()
loaded = provider.load(path=os.path.join(
_here, "test_provider.json"))
if not loaded:
raise ImproperlyConfiguredError(
"Could not load test provider config")
cls.provider = provider
cls.register = srpregister.SRPRegister(provider_config=provider)
cls.auth = srpauth.SRPAuth(provider)
cls._auth_instance = cls.auth.__dict__['_SRPAuth__instance']
cls.authenticate = cls._auth_instance.authenticate
cls.logout = cls._auth_instance.logout
@classmethod
def tearDownClass(cls):
"""
Stops reactor when tearing down the class
"""
stop_reactor()
def test_auth(self):
"""
Checks whether a pair of valid credentials is able to be authenticated.
"""
TEST_USER = "register_test_auth"
TEST_PASS = "pass"
# pristine registration, should go well
ok = self.register.register_user(TEST_USER, TEST_PASS)
self.assertTrue(ok)
self.authenticate(TEST_USER, TEST_PASS)
with self.assertRaises(AssertionError):
# AssertionError: already logged in
# We probably could take this as its own exception
self.authenticate(TEST_USER, TEST_PASS)
self.logout()
# cannot log out two times in a row (there's no session)
with self.assertRaises(AssertionError):
self.logout()
def test_auth_with_bad_credentials(self):
"""
Checks that auth does not succeed with bad credentials.
"""
TEST_USER = "register_test_auth"
TEST_PASS = "pass"
# non-existent credentials, should fail
with self.assertRaises(srpauth.SRPAuthenticationError):
self.authenticate("baduser_1", "passwrong")
# good user, bad password, should fail
with self.assertRaises(srpauth.SRPAuthenticationError):
self.authenticate(TEST_USER, "passwrong")
# bad user, good password, should fail too :)
with self.assertRaises(srpauth.SRPAuthenticationError):
self.authenticate("myunclejoe", TEST_PASS)
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