JezK
Edit File: test_rpc.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 samba import NTSTATUSError, credentials from samba.dcerpc import lsa from samba.ntstatus import ( NT_STATUS_ACCESS_DENIED, NT_STATUS_NO_IMPERSONATION_TOKEN ) from samba.tests.krb5.kdc_base_test import KDCBaseTest global_asn1_print = False global_hexdump = False class RpcTests(KDCBaseTest): """Test for RPC authentication using Kerberos credentials stored in a credentials cache file. """ def test_rpc(self): self._run_rpc_test() def test_rpc_rename(self): self._run_rpc_test(rename=True) def test_rpc_no_pac(self): self._run_rpc_test(include_pac=False, expect_anon=True, allow_error=True) def _run_rpc_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. samdb = self.get_samdb() mach_name = self.host service = "cifs" # Create the user account. user_credentials = self.get_cached_creds( account_type=self.AccountType.USER, use_cache=False) user_name = user_credentials.get_username() mach_credentials = self.get_server_creds() # 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, service, mach_name, pac=include_pac) # Remove the cached credentials file. self.addCleanup(os.remove, cachefile.name) 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. binding_str = "ncacn_np:%s[\\pipe\\lsarpc]" % mach_name try: conn = lsa.lsarpc(binding_str, self.get_lp(), creds) except NTSTATUSError as e: if not allow_error: self.fail() enum, _ = e.args self.assertIn(enum, {NT_STATUS_ACCESS_DENIED, NT_STATUS_NO_IMPERSONATION_TOKEN}) return (account_name, _) = conn.GetUserName(None, None, None) if expect_anon: self.assertNotEqual(user_name, account_name.string) else: self.assertEqual(user_name, account_name.string) def test_rpc_anonymous(self): mach_name = self.host anon_creds = credentials.Credentials() anon_creds.set_anonymous() binding_str = "ncacn_np:%s[\\pipe\\lsarpc]" % mach_name conn = lsa.lsarpc(binding_str, self.get_lp(), anon_creds) (account_name, _) = conn.GetUserName(None, None, None) self.assertEqual('ANONYMOUS LOGON', account_name.string.upper()) if __name__ == "__main__": global_asn1_print = False global_hexdump = False import unittest unittest.main()