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as_req_tests.py	10.06 KB	-rw-r--r--
compatability_tests.py	10.3 KB	-rw-r--r--
etype_tests.py	24.97 KB	-rw-r--r--
fast_tests.py	56.11 KB	-rw-r--r--
kcrypto.py	33.52 KB	-rw-r--r--
kdc_base_test.py	72.76 KB	-rw-r--r--
kdc_tests.py	7.35 KB	-rw-r--r--
kdc_tgs_tests.py	108.09 KB	-rw-r--r--
kpasswd_tests.py	39 KB	-rw-r--r--
ms_kile_client_principal_looku...	31.29 KB	-rw-r--r--
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rfc4120_constants.py	7.12 KB	-rw-r--r--
rfc4120_pyasn1.py	45.11 KB	-rw-r--r--
rodc_tests.py	2.52 KB	-rw-r--r--
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salt_tests.py	11.85 KB	-rw-r--r--
simple_tests.py	6.73 KB	-rw-r--r--
spn_tests.py	6.93 KB	-rw-r--r--
test_ccache.py	5.92 KB	-rw-r--r--
test_idmap_nss.py	8.83 KB	-rw-r--r--
test_ldap.py	6.11 KB	-rw-r--r--
test_min_domain_uid.py	4.35 KB	-rw-r--r--
test_rpc.py	4.52 KB	-rw-r--r--
test_smb.py	5.32 KB	-rw-r--r--
xrealm_tests.py	6.76 KB	-rw-r--r--

Code Editor : test_ccache.py

#!/usr/bin/env python3
# Unix SMB/CIFS implementation.
# Copyright (C) Stefan Metzmacher 2020
# Copyright (C) 2021 Catalyst.Net Ltd
#
# 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/>.
#

import sys
import os

sys.path.insert(0, "bin/python")
os.environ["PYTHONUNBUFFERED"] = "1"

import ldb

from ldb import SCOPE_SUBTREE
from samba import NTSTATUSError, gensec
from samba.auth import AuthContext
from samba.dcerpc import security
from samba.ndr import ndr_unpack
from samba.ntstatus import NT_STATUS_NO_IMPERSONATION_TOKEN

from samba.tests.krb5.kdc_base_test import KDCBaseTest

global_asn1_print = False
global_hexdump = False

class CcacheTests(KDCBaseTest):
    """Test for authentication using Kerberos credentials stored in a
       credentials cache file.
    """

def test_ccache(self):
        self._run_ccache_test()

def test_ccache_rename(self):
        self._run_ccache_test(rename=True)

def test_ccache_no_pac(self):
        self._run_ccache_test(include_pac=False,
                              expect_anon=True, allow_error=True)

def _run_ccache_test(self, rename=False, include_pac=True,
                         expect_anon=False, allow_error=False):
        # Create a user account and a machine account, along with a Kerberos
        # credentials cache file where the service ticket authenticating the
        # user are stored.

mach_name = "ccachemac"
        service = "host"

samdb = self.get_samdb()

# Create the user account.
        user_credentials = self.get_cached_creds(
            account_type=self.AccountType.USER,
            use_cache=False)
        user_name = user_credentials.get_username()

# Create the machine account.
        (mach_credentials, _) = self.create_account(
            samdb,
            mach_name,
            account_type=self.AccountType.COMPUTER,
            spn="%s/%s" % (service,
                           mach_name))

# Talk to the KDC to obtain the service ticket, which gets placed into
        # the cache. The machine account name has to match the name in the
        # ticket, to ensure that the krbtgt ticket doesn't also need to be
        # stored.
        (creds, cachefile) = self.create_ccache_with_user(user_credentials,
                                                          mach_credentials,
                                                          pac=include_pac)
        # Remove the cached credentials file.
        self.addCleanup(os.remove, cachefile.name)

# Retrieve the user account's SID.
        ldb_res = samdb.search(scope=SCOPE_SUBTREE,
                               expression="(sAMAccountName=%s)" % user_name,
                               attrs=["objectSid"])
        self.assertEqual(1, len(ldb_res))
        sid = ndr_unpack(security.dom_sid, ldb_res[0]["objectSid"][0])

if rename:
            # Rename the account.

new_name = self.get_new_username()

msg = ldb.Message(user_credentials.get_dn())
            msg['sAMAccountName'] = ldb.MessageElement(new_name,
                                                       ldb.FLAG_MOD_REPLACE,
                                                       'sAMAccountName')
            samdb.modify(msg)

# Authenticate in-process to the machine account using the user's
        # cached credentials.

lp = self.get_lp()
        lp.set('server role', 'active directory domain controller')

settings = {}
        settings["lp_ctx"] = lp
        settings["target_hostname"] = mach_name

gensec_client = gensec.Security.start_client(settings)
        gensec_client.set_credentials(creds)
        gensec_client.want_feature(gensec.FEATURE_SEAL)
        gensec_client.start_mech_by_sasl_name("GSSAPI")

auth_context = AuthContext(lp_ctx=lp, ldb=samdb, methods=[])

gensec_server = gensec.Security.start_server(settings, auth_context)
        gensec_server.set_credentials(mach_credentials)

gensec_server.start_mech_by_sasl_name("GSSAPI")

client_finished = False
        server_finished = False
        server_to_client = b''

# Operate as both the client and the server to verify the user's
        # credentials.
        while not client_finished or not server_finished:
            if not client_finished:
                print("running client gensec_update")
                (client_finished, client_to_server) = gensec_client.update(
                    server_to_client)
            if not server_finished:
                print("running server gensec_update")
                (server_finished, server_to_client) = gensec_server.update(
                    client_to_server)

# Ensure that the first SID contained within the obtained security
        # token is the SID of the user we created.

# Retrieve the SIDs from the security token.
        try:
            session = gensec_server.session_info()
        except NTSTATUSError as e:
            if not allow_error:
                self.fail()

enum, _ = e.args
            self.assertEqual(NT_STATUS_NO_IMPERSONATION_TOKEN, enum)
            return

token = session.security_token
        token_sids = token.sids
        self.assertGreater(len(token_sids), 0)

# Ensure that they match.
        self.assertEqual(sid, token_sids[0])

if __name__ == "__main__":
    global_asn1_print = False
    global_hexdump = False
    import unittest
    unittest.main()

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