python/samba/tests/getdcname.py

   1 # Unix SMB/CIFS implementation.
   2 # Copyright (C) Andrew Bartlett <abartlet@samba.org> 2018
   3 #
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16 #
  17
  18 """
  19     Tests GetDCNameEx calls in NETLOGON
  20 """
  21
  22 from samba import WERRORError, werror
  23 import samba.tests
  24 import os
  25 from samba.credentials import Credentials
  26 from samba.dcerpc import netlogon, nbt
  27 from samba.dcerpc.misc import GUID
  28 from samba.net import Net
  29
  30 class GetDCNameEx(samba.tests.TestCase):
  31
  32     def setUp(self):
  33         self.lp = samba.tests.env_loadparm()
  34         self.creds = Credentials()
  35
  36         self.netlogon_conn = None
  37         self.server = os.environ.get('SERVER')
  38         self.realm = os.environ.get('REALM')
  39         self.domain = os.environ.get('DOMAIN')
  40         self.trust_realm = os.environ.get('TRUST_REALM')
  41         self.trust_domain = os.environ.get('TRUST_DOMAIN')
  42         self.trust_server = os.environ.get('TRUST_SERVER')
  43
  44     def _call_get_dc_name(self, domain=None, domain_guid=None,
  45                           site_name=None, ex2=False, flags=0):
  46         if self.netlogon_conn is None:
  47             self.netlogon_conn = netlogon.netlogon(f"ncacn_ip_tcp:{self.server}",
  48                                                    self.get_loadparm())
  49
  50         if ex2:
  51             return self.netlogon_conn.netr_DsRGetDCNameEx2(self.server,
  52                                                            None, 0,
  53                                                            domain,
  54                                                            domain_guid,
  55                                                            site_name,
  56                                                            flags)
  57         else:
  58             return self.netlogon_conn.netr_DsRGetDCNameEx(self.server,
  59                                                           domain,
  60                                                           domain_guid,
  61                                                           site_name,
  62                                                           flags)
  63
  64     def test_get_dc_ex2(self):
  65         """Check the most trivial requirements of Ex2 (no domain or site)
  66
  67         a) The paths are prefixed with two backslashes
  68         b) The returned domains conform to the format requested
  69         c) The domain matches our own domain
  70         """
  71         response = self._call_get_dc_name(ex2=True)
  72
  73         self.assertIsNotNone(response.dc_unc)
  74         self.assertTrue(response.dc_unc.startswith('\\\\'))
  75         self.assertIsNotNone(response.dc_address)
  76         self.assertTrue(response.dc_address.startswith('\\\\'))
  77
  78         self.assertTrue(response.domain_name.lower() ==
  79                         self.realm.lower() or
  80                         response.domain_name.lower() ==
  81                         self.domain.lower())
  82
  83         response = self._call_get_dc_name(ex2=True,
  84                                           flags=netlogon.DS_RETURN_DNS_NAME)
  85         self.assertEqual(response.domain_name.lower(),
  86                          self.realm.lower())
  87
  88         response = self._call_get_dc_name(ex2=True,
  89                                           flags=netlogon.DS_RETURN_FLAT_NAME)
  90         self.assertEqual(response.domain_name.lower(),
  91                          self.domain.lower())
  92
  93     def test_get_dc_over_winbind_ex2(self):
  94         """Check what happens to Ex2 requests after being forwarded to winbind
  95
  96         a) The paths must still have the same backslash prefixes
  97         b) The returned domain does not match our own domain
  98         c) The domain matches the format requested
  99         """
 100         self.assertIsNotNone(self.trust_realm)
 101
 102         response_trust = self._call_get_dc_name(domain=self.trust_realm,
 103                                                 ex2=True)
 104         response = self._call_get_dc_name(domain=self.realm,
 105                                           ex2=True)
 106
 107         self.assertIsNotNone(response_trust.dc_unc)
 108         self.assertTrue(response_trust.dc_unc.startswith('\\\\'))
 109         self.assertIsNotNone(response_trust.dc_address)
 110         self.assertTrue(response_trust.dc_address.startswith('\\\\'))
 111
 112         self.assertNotEqual(response_trust.dc_unc,
 113                             response.dc_unc)
 114         self.assertNotEqual(response_trust.dc_address,
 115                             response.dc_address)
 116
 117         self.assertTrue(response_trust.domain_name.lower() ==
 118                         self.trust_realm.lower() or
 119                         response_trust.domain_name.lower() ==
 120                         self.trust_domain.lower())
 121
 122         response_trust = self._call_get_dc_name(domain=self.trust_realm,
 123                                                 flags=netlogon.DS_RETURN_DNS_NAME,
 124                                                 ex2=True)
 125         self.assertEqual(response_trust.domain_name.lower(),
 126                          self.trust_realm.lower())
 127
 128         response_trust = self._call_get_dc_name(domain=self.trust_realm,
 129                                                 flags=netlogon.DS_RETURN_FLAT_NAME,
 130                                                 ex2=True)
 131         self.assertEqual(response_trust.domain_name.lower(),
 132                          self.trust_domain.lower())
 133
 134     def test_get_dc_over_winbind(self):
 135         """Test the standard Ex version (not Ex2)
 136
 137         Ex calls Ex2 anyways, from now on, just test Ex.
 138         """
 139         self.assertIsNotNone(self.trust_realm)
 140
 141         response_trust = self._call_get_dc_name(domain=self.trust_realm,
 142                                                 flags=netlogon.DS_RETURN_DNS_NAME)
 143
 144         self.assertIsNotNone(response_trust.dc_unc)
 145         self.assertTrue(response_trust.dc_unc.startswith('\\\\'))
 146         self.assertIsNotNone(response_trust.dc_address)
 147         self.assertTrue(response_trust.dc_address.startswith('\\\\'))
 148
 149         self.assertEqual(response_trust.domain_name.lower(),
 150                          self.trust_realm.lower())
 151
 152     def test_get_dc_over_winbind_with_site(self):
 153         """Test the standard Ex version (not Ex2)
 154
 155         We assume that there is a Default-First-Site-Name site.
 156         """
 157         self.assertIsNotNone(self.trust_realm)
 158
 159         site = 'Default-First-Site-Name'
 160         response_trust = self._call_get_dc_name(domain=self.trust_realm,
 161                                                 site_name=site,
 162                                                 flags=netlogon.DS_RETURN_DNS_NAME)
 163
 164         self.assertIsNotNone(response_trust.dc_unc)
 165         self.assertTrue(response_trust.dc_unc.startswith('\\\\'))
 166         self.assertIsNotNone(response_trust.dc_address)
 167         self.assertTrue(response_trust.dc_address.startswith('\\\\'))
 168
 169         self.assertEqual(response_trust.domain_name.lower(),
 170                          self.trust_realm.lower())
 171
 172         self.assertEqual(site.lower(), response_trust.dc_site_name.lower())
 173
 174     def test_get_dc_over_winbind_invalid_site(self):
 175         """Test the standard Ex version (not Ex2)
 176
 177         We assume that there is no Invalid-First-Site-Name site.
 178         """
 179         self.assertIsNotNone(self.trust_realm)
 180
 181         site = 'Invalid-First-Site-Name'
 182         try:
 183             response_trust = self._call_get_dc_name(domain=self.trust_realm,
 184                                                     site_name=site,
 185                                                     flags=netlogon.DS_RETURN_DNS_NAME,
 186                                                     ex2=False)
 187             self.fail("Failed to give the correct error for incorrect site")
 188         except WERRORError as e:
 189             enum, estr = e.args
 190             if enum != werror.WERR_NO_SUCH_DOMAIN:
 191                 self.fail("Failed to detect an invalid site name")
 192
 193     def test_get_dc_over_winbind_invalid_site_ex2(self):
 194         """Test the Ex2 version.
 195
 196         We assume that there is no Invalid-First-Site-Name site.
 197         """
 198         self.assertIsNotNone(self.trust_realm)
 199
 200         site = 'Invalid-First-Site-Name'
 201         try:
 202             response_trust = self._call_get_dc_name(domain=self.trust_realm,
 203                                                     site_name=site,
 204                                                     flags=netlogon.DS_RETURN_DNS_NAME,
 205                                                     ex2=True)
 206             self.fail("Failed to give the correct error for incorrect site")
 207         except WERRORError as e:
 208             enum, estr = e.args
 209             if enum != werror.WERR_NO_SUCH_DOMAIN:
 210                 self.fail("Failed to detect an invalid site name")
 211
 212     def test_get_dc_over_winbind_empty_string_site(self):
 213         """Test the standard Ex version (not Ex2)
 214
 215         We assume that there is a Default-First-Site-Name site.
 216         """
 217         self.assertIsNotNone(self.trust_realm)
 218
 219         site = ''
 220         try:
 221             response_trust = self._call_get_dc_name(domain=self.trust_realm,
 222                                                     site_name=site,
 223                                                     flags=netlogon.DS_RETURN_DNS_NAME)
 224         except WERRORError as e:
 225             self.fail("Unable to get empty string site result: " + str(e))
 226
 227         self.assertIsNotNone(response_trust.dc_unc)
 228         self.assertTrue(response_trust.dc_unc.startswith('\\\\'))
 229         self.assertIsNotNone(response_trust.dc_address)
 230         self.assertTrue(response_trust.dc_address.startswith('\\\\'))
 231
 232         self.assertEqual(response_trust.domain_name.lower(),
 233                          self.trust_realm.lower())
 234
 235         self.assertIsNotNone(response_trust.dc_site_name)
 236         self.assertNotEqual('', response_trust.dc_site_name)
 237
 238     def test_get_dc_over_winbind_netbios(self):
 239         """Supply a NETBIOS trust domain name."""
 240         self.assertIsNotNone(self.trust_realm)
 241
 242         try:
 243             response_trust = self._call_get_dc_name(domain=self.trust_domain,
 244                                                     flags=netlogon.DS_RETURN_DNS_NAME,
 245                                                     ex2=False)
 246         except WERRORError as e:
 247             self.fail("Failed to succeed over winbind: " + str(e))
 248
 249         self.assertIsNotNone(response_trust)
 250         self.assertEqual(response_trust.domain_name.lower(),
 251                          self.trust_realm.lower())
 252
 253     def test_get_dc_over_winbind_with_site_netbios(self):
 254         """Supply a NETBIOS trust domain name.
 255
 256         Sporadically fails because NETBIOS queries do not return site name in
 257         winbind. The site check in NETLOGON will trigger and fail the request.
 258
 259         Currently marked in flapping...
 260         """
 261         self.assertIsNotNone(self.trust_realm)
 262
 263         site = 'Default-First-Site-Name'
 264         try:
 265             response_trust = self._call_get_dc_name(domain=self.trust_domain,
 266                                                     site_name=site,
 267                                                     flags=netlogon.DS_RETURN_DNS_NAME,
 268                                                     ex2=False)
 269         except WERRORError as e:
 270             self.fail("get_dc_name (domain=%s,site=%s) over winbind failed: %s"
 271                       % (self.trust_domain, site, e))
 272
 273         self.assertIsNotNone(response_trust)
 274         self.assertEqual(response_trust.domain_name.lower(),
 275                          self.trust_realm.lower())
 276
 277         self.assertEqual(site.lower(), response_trust.dc_site_name.lower())
 278
 279     def test_get_dc_over_winbind_domain_guid(self):
 280         """Ensure that we do not reject requests supplied with a NULL GUID"""
 281
 282         self.assertIsNotNone(self.trust_realm)
 283
 284         null_guid = GUID()
 285         try:
 286             response_trust = self._call_get_dc_name(domain=self.trust_realm,
 287                                                     domain_guid=null_guid,
 288                                                     flags=netlogon.DS_RETURN_DNS_NAME)
 289         except WERRORError as e:
 290             self.fail("Unable to get NULL domain GUID result: " + str(e))
 291
 292         self.assertIsNotNone(response_trust.dc_unc)
 293         self.assertTrue(response_trust.dc_unc.startswith('\\\\'))
 294         self.assertIsNotNone(response_trust.dc_address)
 295         self.assertTrue(response_trust.dc_address.startswith('\\\\'))
 296
 297         self.assertEqual(response_trust.domain_name.lower(),
 298                          self.trust_realm.lower())
 299
 300     def test_get_dc_with_site(self):
 301         """Test the standard Ex version (not Ex2)
 302
 303         We assume that there is a Default-First-Site-Name site.
 304         """
 305
 306         site = 'Default-First-Site-Name'
 307         response = self._call_get_dc_name(domain=self.realm,
 308                                           site_name=site,
 309                                           flags=netlogon.DS_RETURN_DNS_NAME)
 310
 311         self.assertIsNotNone(response.dc_unc)
 312         self.assertTrue(response.dc_unc.startswith('\\\\'))
 313         self.assertIsNotNone(response.dc_address)
 314         self.assertTrue(response.dc_address.startswith('\\\\'))
 315
 316         self.assertEqual(response.domain_name.lower(),
 317                          self.realm.lower())
 318
 319         self.assertEqual(site.lower(), response.dc_site_name.lower())
 320
 321     def test_get_dc_invalid_site(self):
 322         """Test the standard Ex version (not Ex2)
 323
 324         We assume that there is no Invalid-First-Site-Name site.
 325         """
 326         self.assertIsNotNone(self.realm)
 327
 328         site = 'Invalid-First-Site-Name'
 329         try:
 330             response = self._call_get_dc_name(domain=self.realm,
 331                                               site_name=site,
 332                                               flags=netlogon.DS_RETURN_DNS_NAME,
 333                                               ex2=False)
 334             self.fail("Failed to give the correct error for incorrect site")
 335         except WERRORError as e:
 336             enum, estr = e.args
 337             if enum != werror.WERR_NO_SUCH_DOMAIN:
 338                 self.fail("Failed to detect an invalid site name")
 339
 340     def test_get_dc_invalid_site_ex2(self):
 341         """Test the Ex2 version
 342
 343         We assume that there is no Invalid-First-Site-Name site.
 344         """
 345
 346         site = 'Invalid-First-Site-Name'
 347         try:
 348             response = self._call_get_dc_name(domain=self.realm,
 349                                               site_name=site,
 350                                               flags=netlogon.DS_RETURN_DNS_NAME,
 351                                               ex2=True)
 352             self.fail("Failed to give the correct error for incorrect site")
 353         except WERRORError as e:
 354             enum, estr = e.args
 355             if enum != werror.WERR_NO_SUCH_DOMAIN:
 356                 self.fail("Failed to detect an invalid site name")
 357
 358     def test_get_dc_empty_string_site(self):
 359         """Test the standard Ex version (not Ex2)
 360
 361         We assume that there is a Default-First-Site-Name site.
 362         """
 363
 364         site = ''
 365         try:
 366             response = self._call_get_dc_name(domain=self.realm,
 367                                               site_name=site,
 368                                               flags=netlogon.DS_RETURN_DNS_NAME)
 369         except WERRORError as e:
 370             self.fail("Unable to get empty string site result: " + str(e))
 371
 372         self.assertIsNotNone(response.dc_unc)
 373         self.assertTrue(response.dc_unc.startswith('\\\\'))
 374         self.assertIsNotNone(response.dc_address)
 375         self.assertTrue(response.dc_address.startswith('\\\\'))
 376
 377         self.assertEqual(response.domain_name.lower(),
 378                          self.realm.lower())
 379
 380         self.assertIsNotNone(response.dc_site_name)
 381         self.assertNotEqual('', response.dc_site_name)
 382
 383     def test_get_dc_netbios(self):
 384         """Supply a NETBIOS domain name."""
 385
 386         try:
 387             response = self._call_get_dc_name(domain=self.domain,
 388                                               flags=netlogon.DS_RETURN_DNS_NAME,
 389                                               ex2=False)
 390         except WERRORError as e:
 391             self.fail("Failed to succeed over winbind: " + str(e))
 392
 393         self.assertIsNotNone(response)
 394         self.assertEqual(response.domain_name.lower(),
 395                          self.realm.lower())
 396
 397     def test_get_dc_with_site_netbios(self):
 398         """Supply a NETBIOS domain name."""
 399
 400         site = 'Default-First-Site-Name'
 401         try:
 402             response = self._call_get_dc_name(domain=self.domain,
 403                                               site_name=site,
 404                                               flags=netlogon.DS_RETURN_DNS_NAME,
 405                                               ex2=False)
 406         except WERRORError as e:
 407             self.fail("Failed to succeed over winbind: " + str(e))
 408
 409         self.assertIsNotNone(response)
 410         self.assertEqual(response.domain_name.lower(),
 411                          self.realm.lower())
 412
 413         self.assertEqual(site.lower(), response.dc_site_name.lower())
 414
 415     def test_get_dc_with_domain_guid(self):
 416         """Ensure that we do not reject requests supplied with a NULL GUID"""
 417
 418         null_guid = GUID()
 419         response = self._call_get_dc_name(domain=self.realm,
 420                                           domain_guid=null_guid,
 421                                           flags=netlogon.DS_RETURN_DNS_NAME)
 422
 423         self.assertIsNotNone(response.dc_unc)
 424         self.assertTrue(response.dc_unc.startswith('\\\\'))
 425         self.assertIsNotNone(response.dc_address)
 426         self.assertTrue(response.dc_address.startswith('\\\\'))
 427
 428         self.assertEqual(response.domain_name.lower(),
 429                          self.realm.lower())
 430
 431     def test_get_dc_with_empty_string_domain(self):
 432         """Ensure that empty domain resolve to the DC domain"""
 433         response = self._call_get_dc_name(domain='',
 434                                           flags=netlogon.DS_RETURN_DNS_NAME)
 435
 436         self.assertIsNotNone(response.dc_unc)
 437         self.assertTrue(response.dc_unc.startswith('\\\\'))
 438         self.assertIsNotNone(response.dc_address)
 439         self.assertTrue(response.dc_address.startswith('\\\\'))
 440
 441         self.assertEqual(response.domain_name.lower(),
 442                          self.realm.lower())
 443
 444     def test_get_dc_winbind_need_2012r2(self):
 445         """Test requiring that we have a FL2012R2 DC as answer
 446         """
 447         self.assertIsNotNone(self.trust_realm)
 448
 449         try:
 450             response_trust = self._call_get_dc_name(domain=self.trust_realm,
 451                                                 flags=netlogon.DS_RETURN_DNS_NAME|netlogon.DS_DIRECTORY_SERVICE_9_REQUIRED)
 452         except WERRORError as e:
 453             enum, estr = e.args
 454             self.fail(f"netr_DsRGetDCNameEx failed: {estr}")
 455
 456         self.assertIsNotNone(response_trust.dc_unc)
 457         self.assertTrue(response_trust.dc_unc.startswith('\\\\'))
 458         self.assertIsNotNone(response_trust.dc_address)
 459         self.assertTrue(response_trust.dc_address.startswith('\\\\'))
 460
 461         self.assertEqual(response_trust.domain_name.lower(),
 462                          self.trust_realm.lower())
 463
 464         # Now check the CLDAP netlogon response matches the above
 465         dc_ip = response_trust.dc_address[2:]
 466
 467         net = Net(creds=self.creds, lp=self.lp)
 468         cldap_netlogon_reply = net.finddc(domain=self.trust_realm, address=dc_ip,
 469                                           flags=(nbt.NBT_SERVER_LDAP |
 470                                                  nbt.NBT_SERVER_DS))
 471         self.assertTrue(cldap_netlogon_reply.server_type & nbt.NBT_SERVER_DS_9)
 472
 473     def test_get_dc_direct_need_2012r2_but_not_found(self):
 474         """Test requiring that we have a FL2012R2 DC as answer, against the FL2008R2 domain
 475
 476         This test requires that the DC in the FL2008R2 does not claim
 477         to be 2012R2 capable (off by default in Samba)
 478
 479         """
 480         self.assertIsNotNone(self.realm)
 481
 482
 483         try:
 484             response = self._call_get_dc_name(domain=self.realm,
 485                                               flags=netlogon.DS_RETURN_DNS_NAME|netlogon.DS_DIRECTORY_SERVICE_9_REQUIRED)
 486
 487             self.fail("Failed to detect that requirement for 2012R2 was not met")
 488         except WERRORError as e:
 489             enum, estr = e.args
 490             if enum != werror.WERR_NO_SUCH_DOMAIN:
 491                 self.fail(f"Incorrect error {estr} from GetDcNameEx looking for 2012R2 DC that was not available")
 492
 493     def test_get_dc_direct_need_web_but_not_found(self):
 494         """Test requiring that we (do not) have a AD Web Services on the DC
 495
 496         This test requires that the DC does not advertise AD Web Services
 497
 498         This is used as a test that is easy for a modern windows
 499         version to fail, as (say) Windows 2022 will succeed for all
 500         the DS_DIRECTORY_SERVICE_* flags.  Disable AD Web services in
 501         services.mmc to run this test successfully.
 502
 503         """
 504         self.assertIsNotNone(self.realm)
 505
 506
 507         try:
 508             response = self._call_get_dc_name(domain=self.realm,
 509                                               flags=netlogon.DS_RETURN_DNS_NAME|netlogon.DS_WEB_SERVICE_REQUIRED)
 510
 511             self.fail("Failed to detect that requirement for Web Services was not met")
 512         except WERRORError as e:
 513             enum, estr = e.args
 514             if enum != werror.WERR_NO_SUCH_DOMAIN:
 515                 self.fail(f"Incorrect error {estr} from GetDcNameEx looking for AD Web Services enabled DC that should not be available")
 516
 517         # Now check the CLDAP netlogon response matches the above - that the bit was not set
 518         net = Net(creds=self.creds, lp=self.lp)
 519         cldap_netlogon_reply = net.finddc(domain=self.realm,
 520                                           flags=(nbt.NBT_SERVER_LDAP |
 521                                                  nbt.NBT_SERVER_DS))
 522         # We can assert this, even without looking for a particular
 523         # DC, as if any DC has WEB_SERVICE we would have got it above.
 524         self.assertFalse(cldap_netlogon_reply.server_type & nbt.NBT_SERVER_ADS_WEB_SERVICE)
 525
 526     def test_get_dc_winbind_need_web_but_not_found(self):
 527         """Test requiring that we (do not) have a AD Web Services on the trusted DC
 528
 529         This test requires that the DC does not advertise AD Web Services
 530
 531         This is used as a test that is easy for a modern windows
 532         version to fail, as (say) Windows 2022 will succeed for all
 533         the DS_DIRECTORY_SERVICE_* flags.  Disable AD Web services in
 534         services.mmc to run this test successfully.
 535
 536         """
 537         self.assertIsNotNone(self.trust_realm)
 538
 539
 540         try:
 541             response = self._call_get_dc_name(domain=self.trust_realm,
 542                                               flags=netlogon.DS_RETURN_DNS_NAME|netlogon.DS_WEB_SERVICE_REQUIRED)
 543
 544             self.fail("Failed to detect that requirement for Web Services was not met")
 545         except WERRORError as e:
 546             enum, estr = e.args
 547             if enum != werror.WERR_NO_SUCH_DOMAIN:
 548                 self.fail(f"Incorrect error {estr} from GetDcNameEx looking for AD Web Services enabled DC that should not be available")
 549
 550         # Now check the CLDAP netlogon response matches the above - that the bit was not set
 551         net = Net(creds=self.creds, lp=self.lp)
 552         cldap_netlogon_reply = net.finddc(domain=self.trust_realm,
 553                                           flags=(nbt.NBT_SERVER_LDAP |
 554                                                  nbt.NBT_SERVER_DS))
 555         # We can assert this, even without looking for a particular
 556         # DC, as if any DC has WEB_SERVICE we would have got it above.
 557         self.assertFalse(cldap_netlogon_reply.server_type & nbt.NBT_SERVER_ADS_WEB_SERVICE)
 558
 559     def test_get_dc_direct_need_2012r2(self):
 560         """Test requiring that we have a FL2012R2 DC as answer
 561         """
 562         self.assertIsNotNone(self.trust_realm)
 563
 564         self.netlogon_conn = netlogon.netlogon(f"ncacn_ip_tcp:{self.trust_server}",
 565                                                self.get_loadparm())
 566
 567         response_trust = self._call_get_dc_name(domain=self.trust_realm,
 568                                                 flags=netlogon.DS_RETURN_DNS_NAME|netlogon.DS_DIRECTORY_SERVICE_9_REQUIRED)
 569
 570         self.assertIsNotNone(response_trust.dc_unc)
 571         self.assertTrue(response_trust.dc_unc.startswith('\\\\'))
 572         self.assertIsNotNone(response_trust.dc_address)
 573         self.assertTrue(response_trust.dc_address.startswith('\\\\'))
 574
 575         self.assertEqual(response_trust.domain_name.lower(),
 576                          self.trust_realm.lower())
 577
 578         # Now check the CLDAP netlogon response matches the above
 579         dc_ip = response_trust.dc_address[2:]
 580
 581         net = Net(creds=self.creds, lp=self.lp)
 582         cldap_netlogon_reply = net.finddc(domain=self.trust_realm, address=dc_ip,
 583                                           flags=(nbt.NBT_SERVER_LDAP |
 584                                                  nbt.NBT_SERVER_DS))
 585         self.assertTrue(cldap_netlogon_reply.server_type & nbt.NBT_SERVER_DS_9)
 586
 587     def test_get_dc_winbind_need_2012r2_but_not_found(self):
 588         """Test requiring that we have a FL2012R2 DC as answer, against the FL2008R2 domain
 589
 590         This test requires that the DC in the FL2008R2 does not claim
 591         to be 2012R2 capable (off by default in Samba)
 592
 593         """
 594         self.assertIsNotNone(self.realm)
 595
 596         self.netlogon_conn = netlogon.netlogon(f"ncacn_ip_tcp:{self.trust_server}",
 597                                                self.get_loadparm())
 598
 599
 600         try:
 601             response = self._call_get_dc_name(domain=self.realm,
 602                                               flags=netlogon.DS_RETURN_DNS_NAME|netlogon.DS_DIRECTORY_SERVICE_9_REQUIRED)
 603
 604             self.fail("Failed to detect requirement for 2012R2 that is not met")
 605         except WERRORError as e:
 606             enum, estr = e.args
 607             if enum != werror.WERR_NO_SUCH_DOMAIN:
 608                 self.fail("Failed to detect requirement for 2012R2 that is not met")
 609
 610         # Now check the CLDAP netlogon response matches the above - that the DS_9 bit was not set
 611         net = Net(creds=self.creds, lp=self.lp)
 612         cldap_netlogon_reply = net.finddc(domain=self.realm,
 613                                           flags=(nbt.NBT_SERVER_LDAP |
 614                                                  nbt.NBT_SERVER_DS))
 615         self.assertFalse(cldap_netlogon_reply.server_type & nbt.NBT_SERVER_DS_9)
 616
 617     def test_get_dc_winbind_need_2012r2_but_not_found_fallback(self):
 618         """Test requiring that we have a FL2012R2 DC as answer, against the
 619         FL2008R2 domain, then trying for just FL2008R2 (to show caching bugs)
 620
 621         This test requires that the DC in the FL2008R2 does not claim
 622         to be 2012R2 capable (off by default in Samba)
 623
 624         """
 625         self.assertIsNotNone(self.realm)
 626
 627         self.netlogon_conn = netlogon.netlogon(f"ncacn_ip_tcp:{self.trust_server}",
 628                                                self.get_loadparm())
 629
 630
 631         try:
 632             response = self._call_get_dc_name(domain=self.realm,
 633                                               flags=netlogon.DS_RETURN_DNS_NAME|netlogon.DS_DIRECTORY_SERVICE_9_REQUIRED)
 634
 635             self.fail("Failed to detect requirement for 2012R2 that is not met")
 636         except WERRORError as e:
 637             enum, estr = e.args
 638             if enum != werror.WERR_NO_SUCH_DOMAIN:
 639                 self.fail("Failed to detect requirement for 2012R2 that is not met")
 640
 641         try:
 642             response = self._call_get_dc_name(domain=self.realm,
 643                                               flags=netlogon.DS_RETURN_DNS_NAME|netlogon.DS_DIRECTORY_SERVICE_6_REQUIRED)
 644
 645         except WERRORError as e:
 646             enum, estr = e.args
 647             self.fail("Unexpectedly failed to find 2008 DC")
 648
 649         dc_ip = response.dc_address[2:]
 650
 651         net = Net(creds=self.creds, lp=self.lp)
 652         cldap_netlogon_reply = net.finddc(domain=self.realm, address=dc_ip,
 653                                           flags=(nbt.NBT_SERVER_LDAP |
 654                                                  nbt.NBT_SERVER_DS))
 655         self.assertTrue(cldap_netlogon_reply.server_type & nbt.NBT_SERVER_FULL_SECRET_DOMAIN_6)
 656
 657     def test_get_dc_direct_need_2012r2_but_not_found_fallback(self):
 658         """Test requiring that we have a FL2012R2 DC as answer, against the
 659         FL2008R2 domain, then trying for just FL2008R2 (to show caching bugs)
 660
 661         This test requires that the DC in the FL2008R2 does not claim
 662         to be 2012R2 capable (off by default in Samba)
 663
 664         """
 665         self.assertIsNotNone(self.realm)
 666
 667         self.netlogon_conn = netlogon.netlogon(f"ncacn_ip_tcp:{self.server}",
 668                                                self.get_loadparm())
 669
 670
 671         try:
 672             response = self._call_get_dc_name(domain=self.realm,
 673                                               flags=netlogon.DS_RETURN_DNS_NAME|netlogon.DS_DIRECTORY_SERVICE_9_REQUIRED)
 674
 675             self.fail("Failed to detect requirement for 2012R2 that is not met")
 676         except WERRORError as e:
 677             enum, estr = e.args
 678             if enum != werror.WERR_NO_SUCH_DOMAIN:
 679                 self.fail("Failed to detect requirement for 2012R2 that is not met")
 680
 681         try:
 682             response = self._call_get_dc_name(domain=self.realm,
 683                                               flags=netlogon.DS_RETURN_DNS_NAME|netlogon.DS_DIRECTORY_SERVICE_6_REQUIRED)
 684
 685         except WERRORError as e:
 686             enum, estr = e.args
 687             self.fail("Unexpectedly failed to find 2008 DC")
 688
 689         dc_ip = response.dc_address[2:]
 690
 691         net = Net(creds=self.creds, lp=self.lp)
 692         cldap_netlogon_reply = net.finddc(domain=self.realm, address=dc_ip,
 693                                           flags=(nbt.NBT_SERVER_LDAP |
 694                                                  nbt.NBT_SERVER_DS))
 695         self.assertTrue(cldap_netlogon_reply.server_type & nbt.NBT_SERVER_FULL_SECRET_DOMAIN_6)
 696
 697     # TODO Thorough tests of domain GUID
 698     #
 699     # The domain GUID does not seem to be authoritative, and seems to be a
 700     # fallback case for renamed domains.