Added alternate hash support to auth_tkt plugin

David Tulloh

2016-04-20 7483ece150564b242ba0ac5c091319ee570dd9e1

 repoze/who/plugins/tests/test_authtkt.py

@@ -1,5 +1,6 @@
import unittest


class TestAuthTktCookiePlugin(unittest.TestCase):
    tempdir = None
    _now_testing = None
@@ -35,8 +36,7 @@
    def _makeTicket(self, userid='userid', remote_addr='0.0.0.0',
                    tokens = [], userdata='userdata',
                    cookie_name='auth_tkt', secure=False,
                    time=None):
        #from paste.auth import auth_tkt
                    time=None, digest_algo="md5"):
        import repoze.who._auth_tkt as auth_tkt
        ticket = auth_tkt.AuthTicket(
            'secret',
@@ -46,12 +46,13 @@
            user_data=userdata,
            time=time,
            cookie_name=cookie_name,
            secure=secure)
            secure=secure,
            digest_algo=digest_algo)
        return ticket.cookie_value()

    def _setNowTesting(self, value):
        from repoze.who.plugins import auth_tkt
        auth_tkt._NOW_TESTING, self._now_testing = value, auth_tkt._NOW_TESTING
        auth_tkt._UTCNOW, self._now_testing = value, auth_tkt._UTCNOW

    def test_class_conforms_to_IIdentifier(self):
        from zope.interface.verify import verifyClass
@@ -92,58 +93,58 @@
        
    def test_identify_good_cookie_include_ip(self):
        plugin = self._makeOne('secret', include_ip=True)
        val = self._makeTicket(remote_addr='1.1.1.1')
        val = self._makeTicket(remote_addr='1.1.1.1', userdata='foo=123')
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=%s' % val})
        result = plugin.identify(environ)
        self.assertEqual(len(result), 4)
        self.assertEqual(result['tokens'], [''])
        self.assertEqual(result['repoze.who.plugins.auth_tkt.userid'], 'userid')
        self.assertEqual(result['userdata'], 'userdata')
        self.failUnless('timestamp' in result)
        self.assertEqual(result['userdata'], {'foo': '123'})
        self.assertTrue('timestamp' in result)
        self.assertEqual(environ['REMOTE_USER_TOKENS'], [''])
        self.assertEqual(environ['REMOTE_USER_DATA'],'userdata')
        self.assertEqual(environ['REMOTE_USER_DATA'],'foo=123')
        self.assertEqual(environ['AUTH_TYPE'],'cookie')

    def test_identify_good_cookie_dont_include_ip(self):
        plugin = self._makeOne('secret', include_ip=False)
        val = self._makeTicket()
        val = self._makeTicket(userdata='foo=123')
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=%s' % val})
        result = plugin.identify(environ)
        self.assertEqual(len(result), 4)
        self.assertEqual(result['tokens'], [''])
        self.assertEqual(result['repoze.who.plugins.auth_tkt.userid'], 'userid')
        self.assertEqual(result['userdata'], 'userdata')
        self.failUnless('timestamp' in result)
        self.assertEqual(result['userdata'], {'foo': '123'})
        self.assertTrue('timestamp' in result)
        self.assertEqual(environ['REMOTE_USER_TOKENS'], [''])
        self.assertEqual(environ['REMOTE_USER_DATA'],'userdata')
        self.assertEqual(environ['REMOTE_USER_DATA'],'foo=123')
        self.assertEqual(environ['AUTH_TYPE'],'cookie')

    def test_identify_good_cookie_int_useridtype(self):
        plugin = self._makeOne('secret', include_ip=False)
        val = self._makeTicket(userid='1', userdata='userid_type:int')
        val = self._makeTicket(userid='1', userdata='userid_type=int')
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=%s' % val})
        result = plugin.identify(environ)
        self.assertEqual(len(result), 4)
        self.assertEqual(result['tokens'], [''])
        self.assertEqual(result['repoze.who.plugins.auth_tkt.userid'], 1)
        self.assertEqual(result['userdata'], 'userid_type:int')
        self.failUnless('timestamp' in result)
        self.assertEqual(result['userdata'], {'userid_type': 'int'})
        self.assertTrue('timestamp' in result)
        self.assertEqual(environ['REMOTE_USER_TOKENS'], [''])
        self.assertEqual(environ['REMOTE_USER_DATA'],'userid_type:int')
        self.assertEqual(environ['REMOTE_USER_DATA'],'userid_type=int')
        self.assertEqual(environ['AUTH_TYPE'],'cookie')

    def test_identify_good_cookie_unknown_useridtype(self):
        plugin = self._makeOne('secret', include_ip=False)
        val = self._makeTicket(userid='userid', userdata='userid_type:unknown')
        val = self._makeTicket(userid='userid', userdata='userid_type=unknown')
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=%s' % val})
        result = plugin.identify(environ)
        self.assertEqual(len(result), 4)
        self.assertEqual(result['tokens'], [''])
        self.assertEqual(result['repoze.who.plugins.auth_tkt.userid'], 'userid')
        self.assertEqual(result['userdata'], 'userid_type:unknown')
        self.failUnless('timestamp' in result)
        self.assertEqual(result['userdata'], {'userid_type':'unknown'})
        self.assertTrue('timestamp' in result)
        self.assertEqual(environ['REMOTE_USER_TOKENS'], [''])
        self.assertEqual(environ['REMOTE_USER_DATA'],'userid_type:unknown')
        self.assertEqual(environ['REMOTE_USER_DATA'],'userid_type=unknown')
        self.assertEqual(environ['AUTH_TYPE'],'cookie')

    def test_identify_bad_cookie(self):
@@ -162,32 +163,117 @@

    def test_identify_with_checker_and_existing_account(self):
        plugin = self._makeOne('secret', userid_checker=dummy_userid_checker)
        val = self._makeTicket(userid='existing')
        val = self._makeTicket(userid='existing', userdata='foo=123')
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=%s' % val})
        result = plugin.identify(environ)
        self.assertEqual(len(result), 4)
        self.assertEqual(result['tokens'], [''])
        self.assertEqual(result['repoze.who.plugins.auth_tkt.userid'], 'existing')
        self.assertEqual(result['userdata'], 'userdata')
        self.failUnless('timestamp' in result)
        self.assertEqual(result['userdata'], {'foo': '123'})
        self.assertTrue('timestamp' in result)
        self.assertEqual(environ['REMOTE_USER_TOKENS'], [''])
        self.assertEqual(environ['REMOTE_USER_DATA'],'userdata')
        self.assertEqual(environ['REMOTE_USER_DATA'],'foo=123')
        self.assertEqual(environ['AUTH_TYPE'],'cookie')

    def test_identify_with_alternate_hash(self):
        plugin = self._makeOne('secret', include_ip=False, digest_algo="sha256")
        val = self._makeTicket(userdata='foo=123', digest_algo="sha256")
        md5_val = self._makeTicket(userdata='foo=123')
        self.assertNotEqual(val, md5_val)
        # md5 is 16*2 characters long, sha256 is 32*2
        self.assertEqual(len(val), len(md5_val)+32)
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=%s' % val})
        result = plugin.identify(environ)
        self.assertEqual(len(result), 4)
        self.assertEqual(result['tokens'], [''])
        self.assertEqual(result['repoze.who.plugins.auth_tkt.userid'], 'userid')
        self.assertEqual(result['userdata'], {'foo': '123'})
        self.assertTrue('timestamp' in result)
        self.assertEqual(environ['REMOTE_USER_TOKENS'], [''])
        self.assertEqual(environ['REMOTE_USER_DATA'],'foo=123')
        self.assertEqual(environ['AUTH_TYPE'],'cookie')

    def test_identify_bad_cookie_with_alternate_hash(self):
        plugin = self._makeOne('secret', include_ip=True, digest_algo="sha256")
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=bogus'})
        result = plugin.identify(environ)
        self.assertEqual(result, None)
    
    def test_remember_creds_same(self):
        plugin = self._makeOne('secret')
        val = self._makeTicket(userid='userid')
        val = self._makeTicket(userid='userid', userdata='foo=123')
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=%s' % val})
        result = plugin.remember(environ, {'repoze.who.userid':'userid',
                                           'userdata':'userdata'})
                                           'userdata':{'foo': '123'}})
        self.assertEqual(result, None)

    def test_remember_creds_same_alternate_hash(self):
        plugin = self._makeOne('secret', digest_algo="sha1")
        val = self._makeTicket(userid='userid', userdata='foo=123', digest_algo="sha1")
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=%s' % val})
        result = plugin.remember(environ, {'repoze.who.userid':'userid',
                                           'userdata':{'foo': '123'}})
        self.assertEqual(result, None)

    def test_remember_creds_hash_mismatch(self):
        plugin = self._makeOne('secret', digest_algo="sha1")
        old_val = self._makeTicket(userid='userid', userdata='foo=123', digest_algo="md5")
        new_val = self._makeTicket(userid='userid', userdata='foo=123', digest_algo="sha1")
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=%s' % old_val})
        result = plugin.remember(environ, {'repoze.who.userid':'userid',
                                           'userdata':{'foo': '123'}})
        self.assertEqual(len(result), 3)
        self.assertEqual(result[0],
                         ('Set-Cookie',
                          'auth_tkt="%s"; '
                          'Path=/' % new_val))
        self.assertEqual(result[1],
                         ('Set-Cookie',
                           'auth_tkt="%s"; '
                           'Path=/; '
                           'Domain=localhost'
                            % new_val))
        self.assertEqual(result[2],
                         ('Set-Cookie',
                           'auth_tkt="%s"; '
                           'Path=/; '
                           'Domain=.localhost'
                            % new_val))

    def test_remember_creds_secure_alternate_hash(self):
        plugin = self._makeOne('secret', secure=True, digest_algo="sha512")
        val = self._makeTicket(userid='userid', secure=True, userdata='foo=123', digest_algo="sha512")
        environ = self._makeEnviron()
        result = plugin.remember(environ, {'repoze.who.userid':'userid',
                                           'userdata':{'foo':'123'}})
        self.assertEqual(len(result), 3)
        self.assertEqual(result[0],
                         ('Set-Cookie',
                          'auth_tkt="%s"; '
                          'Path=/; '
                          'secure; '
                          'HttpOnly' % val))
        self.assertEqual(result[1],
                         ('Set-Cookie',
                           'auth_tkt="%s"; '
                           'Path=/; '
                           'Domain=localhost; '
                           'secure; HttpOnly'
                            % val))
        self.assertEqual(result[2],
                         ('Set-Cookie',
                           'auth_tkt="%s"; '
                           'Path=/; '
                           'Domain=.localhost; '
                           'secure; HttpOnly'
                            % val))

    def test_remember_creds_secure(self):
        plugin = self._makeOne('secret', secure=True)
        val = self._makeTicket(userid='userid', secure=True)
        val = self._makeTicket(userid='userid', secure=True, userdata='foo=123')
        environ = self._makeEnviron()
        result = plugin.remember(environ, {'repoze.who.userid':'userid',
                                           'userdata':'userdata'})
                                           'userdata':{'foo':'123'}})
        self.assertEqual(len(result), 3)
        self.assertEqual(result[0],
                         ('Set-Cookie',
@@ -214,9 +300,9 @@
        plugin = self._makeOne('secret')
        old_val = self._makeTicket(userid='userid')
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=%s' % old_val})
        new_val = self._makeTicket(userid='other', userdata='userdata')
        new_val = self._makeTicket(userid='other', userdata='foo=123')
        result = plugin.remember(environ, {'repoze.who.userid':'other',
                                           'userdata':'userdata'})
                                           'userdata':{'foo':'123'}})
        self.assertEqual(len(result), 3)
        self.assertEqual(result[0],
                         ('Set-Cookie',
@@ -241,9 +327,9 @@
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=%s' % old_val,
                                     'HTTP_HOST': 'localhost:8080',
                                    })
        new_val = self._makeTicket(userid='other', userdata='userdata')
        new_val = self._makeTicket(userid='other', userdata='foo=123')
        result = plugin.remember(environ, {'repoze.who.userid':'other',
                                           'userdata':'userdata'})
                                           'userdata':{'foo': '123'}})
        self.assertEqual(len(result), 3)
        self.assertEqual(result[0],
                         ('Set-Cookie',
@@ -267,10 +353,10 @@
        old_val = self._makeTicket(userid='userid', remote_addr='1.1.1.1')
        environ = self._makeEnviron({'HTTP_COOKIE': 'auth_tkt=%s' % old_val})
        new_val = self._makeTicket(userid='other',
                                   userdata='userdata',
                                   userdata='foo=123',
                                   remote_addr='1.1.1.1')
        result = plugin.remember(environ, {'repoze.who.userid':'other',
                                           'userdata':'userdata'})
                                           'userdata':{'foo': '123'}})
        self.assertEqual(len(result), 3)
        self.assertEqual(result[0],
                         ('Set-Cookie',
@@ -293,9 +379,9 @@
        plugin = self._makeOne('secret')
        old_val = 'BOGUS'
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=%s' % old_val})
        new_val = self._makeTicket(userid='other', userdata='userdata')
        new_val = self._makeTicket(userid='other', userdata='foo=123')
        result = plugin.remember(environ, {'repoze.who.userid':'other',
                                           'userdata':'userdata'})
                                           'userdata':{'foo': '123'}})
        self.assertEqual(len(result), 3)
        self.assertEqual(result[0],
                         ('Set-Cookie',
@@ -319,11 +405,11 @@
        old_val = self._makeTicket(userid='userid')
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=%s' % old_val})
        new_val = self._makeTicket(userid='userid',
                                   userdata='userdata',
                                   userdata='foo=123',
                                   tokens=['foo', 'bar'],
                                  )
        result = plugin.remember(environ, {'repoze.who.userid': 'userid',
                                           'userdata': 'userdata',
                                           'userdata': {'foo': '123'},
                                           'tokens': ['foo', 'bar'],
                                          })
        self.assertEqual(len(result), 3)
@@ -348,11 +434,11 @@
        old_val = self._makeTicket(userid='userid')
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=%s' % old_val})
        new_val = self._makeTicket(userid='userid',
                                   userdata='userdata',
                                   userdata='foo=123',
                                   tokens=['foo', 'bar'],
                                  )
        result = plugin.remember(environ, {'repoze.who.userid': 'userid',
                                           'userdata': 'userdata',
                                           'userdata': {'foo': '123'},
                                           'tokens': ('foo', 'bar'),
                                          })
        self.assertEqual(len(result), 3)
@@ -377,15 +463,14 @@
        plugin = self._makeOne('secret')
        old_val = self._makeTicket(userid='userid')
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=%s' % old_val})
        new_val = self._makeTicket(userid='1', userdata='userid_type:int')
        new_val = self._makeTicket(userid='1', userdata='userid_type=int')
        result = plugin.remember(environ, {'repoze.who.userid':1,
                                           'userdata':''})
        
                                           'userdata':{}})

        self.assertEqual(len(result), 3)
        self.assertEqual(result[0],
                         ('Set-Cookie',
                          'auth_tkt="%s"; '
                          'Path=/' % new_val))
                          'auth_tkt="%s"; Path=/' % new_val))

    def test_remember_creds_different_long_userid(self):
        try:
@@ -395,30 +480,32 @@
        plugin = self._makeOne('secret')
        old_val = self._makeTicket(userid='userid')
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=%s' % old_val})
        new_val = self._makeTicket(userid='1', userdata='userid_type:int')
        new_val = self._makeTicket(userid='1', userdata='userid_type=int')
        result = plugin.remember(environ, {'repoze.who.userid':long(1),
                                           'userdata':''})
                                           'userdata':{}})
        self.assertEqual(len(result), 3)
        self.assertEqual(result[0],
                         ('Set-Cookie',
                          'auth_tkt="%s"; '
                          'Path=/' % new_val))
                          'auth_tkt="%s"; Path=/' % new_val))

    def test_remember_creds_different_unicode_userid(self):
        plugin = self._makeOne('secret')
        old_val = self._makeTicket(userid='userid')
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=%s' % old_val})
        userid = b'\xc2\xa9'.decode('utf-8')
        if type(b'') == type(''):
            userdata = 'userid_type=unicode'
        else: # pragma: no cover Py3k
            userdata = ''
        new_val = self._makeTicket(userid=userid.encode('utf-8'),
                                   userdata='userid_type:unicode')
                                   userdata=userdata)
        result = plugin.remember(environ, {'repoze.who.userid':userid,
                                           'userdata':''})
                                           'userdata':{}})
        self.assertEqual(type(result[0][1]), str)
        self.assertEqual(len(result), 3)
        self.assertEqual(result[0],
                         ('Set-Cookie',
                          'auth_tkt="%s"; '
                          'Path=/' % new_val))
                          'auth_tkt="%s"; Path=/' % new_val))

    def test_remember_creds_reissue(self):
        import time
@@ -433,39 +520,82 @@
        self.assertEqual(len(result), 3)
        self.assertEqual(result[0],
                         ('Set-Cookie',
                          'auth_tkt="%s"; '
                          'Path=/' % new_val))
                          'auth_tkt="%s"; Path=/' % new_val))

    def test_remember_creds_reissue_alternate_hash(self):
        import time
        plugin = self._makeOne('secret', reissue_time=1, digest_algo="sha256")
        old_val = self._makeTicket(userid='userid', userdata='',
                                   time=time.time()-2, digest_algo="sha256")
        environ = self._makeEnviron({'HTTP_COOKIE':'auth_tkt=%s' % old_val})
        new_val = self._makeTicket(userid='userid', userdata='',
                                   digest_algo="sha256")
        result = plugin.remember(environ, {'repoze.who.userid':'userid',
                                           'userdata':''})
        self.assertEqual(type(result[0][1]), str)
        self.assertEqual(len(result), 3)
        self.assertEqual(result[0],
                         ('Set-Cookie',
                          'auth_tkt="%s"; Path=/' % new_val))

    def test_l10n_sane_cookie_date(self):
        from datetime import datetime

        now = datetime(2009, 11, 8, 16, 15, 22)
        self._setNowTesting(now)

        plugin = self._makeOne('secret')
        environ = {'HTTP_HOST': 'example.com'}

        tkt = self._makeTicket(userid='chris', userdata='')


        result = plugin.remember(environ, {'repoze.who.userid': 'chris',
                                            'max_age': '500'})
        name, value = result.pop(0)

        self.assertEqual('Set-Cookie', name)
        self.assertTrue(
            value.endswith('; Expires=Sun, 08 Nov 2009 16:23:42 GMT'))

    def test_remember_max_age(self):
        from datetime import datetime

        now = datetime(2009, 11, 8, 16, 15, 22)
        self._setNowTesting(now)

        plugin = self._makeOne('secret')
        environ = {'HTTP_HOST':'example.com'}
        
        environ = {'HTTP_HOST': 'example.com'}

        tkt = self._makeTicket(userid='chris', userdata='')
        result = plugin.remember(environ, {'repoze.who.userid':'chris',
                                           'max_age':'500'})
        
        name,value = result.pop(0)
        result = plugin.remember(environ, {'repoze.who.userid': 'chris',
                                           'max_age': '500'})

        name, value = result.pop(0)
        self.assertEqual('Set-Cookie', name)
        self.failUnless(
        self.assertTrue(
            value.startswith('auth_tkt="%s"; Path=/; Max-Age=500' % tkt),
            value)
        self.failUnless('; Expires=' in value)
        
        name,value = result.pop(0)
        self.assertEqual('Set-Cookie', name)
        self.failUnless(
            value.startswith(
            'auth_tkt="%s"; Path=/; Domain=example.com; Max-Age=500'
            % tkt), value)
        self.failUnless('; Expires=' in value)
        self.assertTrue(
            value.endswith('; Expires=Sun, 08 Nov 2009 16:23:42 GMT'))

        name,value = result.pop(0)
        name, value = result.pop(0)
        self.assertEqual('Set-Cookie', name)
        self.failUnless(
        self.assertTrue(
            value.startswith(
            'auth_tkt="%s"; Path=/; Domain=.example.com; Max-Age=500' % tkt),
                'auth_tkt="%s"; Path=/; Domain=example.com; Max-Age=500'
                % tkt), value)
        self.assertTrue(
            value.endswith('; Expires=Sun, 08 Nov 2009 16:23:42 GMT'))

        name, value = result.pop(0)
        self.assertEqual('Set-Cookie', name)
        self.assertTrue(
            value.startswith(
                'auth_tkt="%s"; Path=/; Domain=.example.com; Max-Age=500' % tkt),
            value)
        self.failUnless('; Expires=' in value)
        self.assertTrue(
            value.endswith('; Expires=Sun, 08 Nov 2009 16:23:42 GMT'))

    def test_forget(self):
        from datetime import datetime
@@ -480,21 +610,21 @@
        self.assertEqual(name, 'Set-Cookie')
        self.assertEqual(value,
                         'auth_tkt="INVALID"; Path=/; '
                         'Max-Age=0; Expires=Thu, 05 Nov 2009 16:15:22'
                         'Max-Age=0; Expires=Thu, 05 Nov 2009 16:15:22 GMT'
                         )
        header = headers[1]
        name, value = header
        self.assertEqual(name, 'Set-Cookie')
        self.assertEqual(value,
                         'auth_tkt="INVALID"; Path=/; Domain=localhost; '
                         'Max-Age=0; Expires=Thu, 05 Nov 2009 16:15:22'
                         'Max-Age=0; Expires=Thu, 05 Nov 2009 16:15:22 GMT'
                         )
        header = headers[2]
        name, value = header
        self.assertEqual(name, 'Set-Cookie')
        self.assertEqual(value,
                         'auth_tkt="INVALID"; Path=/; Domain=.localhost; '
                         'Max-Age=0; Expires=Thu, 05 Nov 2009 16:15:22'
                         'Max-Age=0; Expires=Thu, 05 Nov 2009 16:15:22 GMT'
                        )

    def test_authenticate_non_auth_tkt_credentials(self):
@@ -562,6 +692,23 @@
            userid_checker='repoze.who.plugins.auth_tkt:make_plugin')
        self.assertEqual(plugin.userid_checker, make_plugin)

    def test_factory_with_alternate_hash(self):
        from repoze.who.plugins.auth_tkt import make_plugin
        import hashlib
        plugin = make_plugin('secret', digest_algo="sha1")
        self.assertEqual(plugin.digest_algo, hashlib.sha1)

    def test_factory_with_alternate_hash_func(self):
        from repoze.who.plugins.auth_tkt import make_plugin
        import hashlib
        plugin = make_plugin('secret', digest_algo=hashlib.sha1)
        self.assertEqual(plugin.digest_algo, hashlib.sha1)

    def test_factory_with_bogus_hash(self):
        from repoze.who.plugins.auth_tkt import make_plugin
        self.assertRaises(ValueError, make_plugin,
                          secret="fiddly", digest_algo='foo23')

    def test_remember_max_age_unicode(self):
        from repoze.who._compat import u
        plugin = self._makeOne('secret')
@@ -571,27 +718,27 @@
                                           'max_age': u('500')})
        name, value = result.pop(0)
        self.assertEqual('Set-Cookie', name)
        self.failUnless(isinstance(value, str))
        self.failUnless(
        self.assertTrue(isinstance(value, str))
        self.assertTrue(
            value.startswith('auth_tkt="%s"; Path=/; Max-Age=500' % tkt),
            (value, tkt))
        self.failUnless('; Expires=' in value)
        self.assertTrue('; Expires=' in value)
        
        name,value = result.pop(0)
        self.assertEqual('Set-Cookie', name)
        self.failUnless(
        self.assertTrue(
            value.startswith(
            'auth_tkt="%s"; Path=/; Domain=example.com; Max-Age=500'
            % tkt), value)
        self.failUnless('; Expires=' in value)
        self.assertTrue('; Expires=' in value)

        name,value = result.pop(0)
        self.assertEqual('Set-Cookie', name)
        self.failUnless(
        self.assertTrue(
            value.startswith(
            'auth_tkt="%s"; Path=/; Domain=.example.com; Max-Age=500' % tkt),
            value)
        self.failUnless('; Expires=' in value)
        self.assertTrue('; Expires=' in value)


def dummy_userid_checker(userid):