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# -*- coding: utf-8 -*-
# test_srpregister.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/srpregister.py
* 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 srpregister, srpauth
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 SRPTestCase(unittest.TestCase):
"""
Tests for the SRP Register and Auth classes
"""
__name__ = "SRPRegister and 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()
http = reactor.listenTCP(8001, factory)
https = reactor.listenSSL(
0, factory,
fake_provider.OpenSSLServerContextFactory())
get_port = lambda p: p.getHost().port
cls.http_port = get_port(http)
cls.https_port = get_port(https)
provider = ProviderConfig()
provider.get_ca_cert_path = MagicMock()
provider.get_ca_cert_path.return_value = _get_capath()
provider.get_api_uri = MagicMock()
provider.get_api_uri.return_value = cls._get_https_uri()
loaded = provider.load(path=os.path.join(
_here, "test_provider.json"))
if not loaded:
raise ImproperlyConfiguredError(
"Could not load test provider config")
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
# run!
threaded_reactor()
@classmethod
def tearDownClass(cls):
"""
Stops reactor when tearing down the class
"""
stop_reactor()
# helper methods
@classmethod
def _get_https_uri(cls):
"""
Returns a https uri with the right https port initialized
"""
return "https://localhost:%s" % (cls.https_port,)
# Register tests
def test_register_user(self):
"""
Checks if the registration of an unused name works as expected when
it is the first time that we attempt to register that user, as well as
when we request a user that is taken.
"""
# pristine registration
ok = self.register.register_user("foouser_firsttime", "barpass")
self.assertTrue(ok)
# second registration attempt with the same user should return errors
ok = self.register.register_user("foouser_second", "barpass")
self.assertTrue(ok)
# FIXME currently we are catching this in an upper layer,
# we could bring the error validation to the SRPRegister class
ok = self.register.register_user("foouser_second", "barpass")
def test_correct_http_uri(self):
"""
Checks that registration autocorrect http uris to https ones.
"""
HTTP_URI = "http://localhost:%s" % (self.https_port, )
HTTPS_URI = "https://localhost:%s/1/users" % (self.https_port, )
provider = ProviderConfig()
provider.get_ca_cert_path = MagicMock()
provider.get_ca_cert_path.return_value = _get_capath()
provider.get_api_uri = MagicMock()
# we introduce a http uri in the config file...
provider.get_api_uri.return_value = HTTP_URI
loaded = provider.load(path=os.path.join(
_here, "test_provider.json"))
if not loaded:
raise ImproperlyConfiguredError(
"Could not load test provider config")
self.register = srpregister.SRPRegister(provider_config=provider)
# ... and we check that we're correctly taking the HTTPS protocol
# instead
self.assertEquals(self.register._get_registration_uri(),
HTTPS_URI)
ok = self.register.register_user("test_failhttp", "barpass")
self.assertTrue(ok)
# XXX need to assert that _get_registration_uri was called too
# Auth tests
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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