source4/scripting/python/samba/netcmd/drs.py

   1 #!/usr/bin/env python
   2 #
   3 # implement samba_tool drs commands
   4 #
   5 # Copyright Andrew Tridgell 2010
   6 # Copyright Giampaolo Lauria 2011 <lauria2@yahoo.com>
   7 #
   8 # based on C implementation by Kamen Mazdrashki <kamen.mazdrashki@postpath.com>
   9 #
  10 # This program is free software; you can redistribute it and/or modify
  11 # it under the terms of the GNU General Public License as published by
  12 # the Free Software Foundation; either version 3 of the License, or
  13 # (at your option) any later version.
  14 #
  15 # This program is distributed in the hope that it will be useful,
  16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 # GNU General Public License for more details.
  19 #
  20 # You should have received a copy of the GNU General Public License
  21 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 #
  23
  24 import samba.getopt as options
  25 import ldb
  26
  27 from samba.auth import system_session
  28 from samba.netcmd import (
  29     Command,
  30     CommandError,
  31     Option,
  32     SuperCommand,
  33     )
  34 from samba.samdb import SamDB
  35 from samba import drs_utils, nttime2string, dsdb
  36 from samba.dcerpc import drsuapi, misc
  37 import common
  38
  39 def drsuapi_connect(ctx):
  40     '''make a DRSUAPI connection to the server'''
  41     binding_options = "seal"
  42     if int(ctx.lp.get("log level")) >= 5:
  43         binding_options += ",print"
  44     binding_string = "ncacn_ip_tcp:%s[%s]" % (ctx.server, binding_options)
  45     try:
  46         ctx.drsuapi = drsuapi.drsuapi(binding_string, ctx.lp, ctx.creds)
  47         (ctx.drsuapi_handle, ctx.bind_supported_extensions) = drs_utils.drs_DsBind(ctx.drsuapi)
  48     except Exception, e:
  49         raise CommandError("DRS connection to %s failed" % ctx.server, e)
  50
  51
  52 def samdb_connect(ctx):
  53     '''make a ldap connection to the server'''
  54     try:
  55         ctx.samdb = SamDB(url="ldap://%s" % ctx.server,
  56                           session_info=system_session(),
  57                           credentials=ctx.creds, lp=ctx.lp)
  58     except Exception, e:
  59         raise CommandError("LDAP connection to %s failed" % ctx.server, e)
  60
  61
  62 def drs_errmsg(werr):
  63     '''return "was successful" or an error string'''
  64     (ecode, estring) = werr
  65     if ecode == 0:
  66         return "was successful"
  67     return "failed, result %u (%s)" % (ecode, estring)
  68
  69
  70 def attr_default(msg, attrname, default):
  71     '''get an attribute from a ldap msg with a default'''
  72     if attrname in msg:
  73         return msg[attrname][0]
  74     return default
  75
  76
  77 def drs_parse_ntds_dn(ntds_dn):
  78     '''parse a NTDS DN returning a site and server'''
  79     a = ntds_dn.split(',')
  80     if a[0] != "CN=NTDS Settings" or a[2] != "CN=Servers" or a[4] != 'CN=Sites':
  81         raise RuntimeError("bad NTDS DN %s" % ntds_dn)
  82     server = a[1].split('=')[1]
  83     site   = a[3].split('=')[1]
  84     return (site, server)
  85
  86
  87 def get_dsServiceName(samdb):
  88     '''get the NTDS DN from the rootDSE'''
  89     res = samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["dsServiceName"])
  90     return res[0]["dsServiceName"][0]
  91
  92
  93 class cmd_drs_showrepl(Command):
  94     """show replication status"""
  95
  96     synopsis = "%prog drs showrepl <DC> [options]"
  97
  98     takes_args = ["DC?"]
  99
 100     def print_neighbour(self, n):
 101         '''print one set of neighbour information'''
 102         self.message("%s" % n.naming_context_dn)
 103         try:
 104             (site, server) = drs_parse_ntds_dn(n.source_dsa_obj_dn)
 105             self.message("\t%s\%s via RPC" % (site, server))
 106         except RuntimeError:
 107             self.message("\tNTDS DN: %s" % n.source_dsa_obj_dn)
 108         self.message("\t\tDSA object GUID: %s" % n.source_dsa_obj_guid)
 109         self.message("\t\tLast attempt @ %s %s" % (nttime2string(n.last_attempt),
 110                                                    drs_errmsg(n.result_last_attempt)))
 111         self.message("\t\t%u consecutive failure(s)." % n.consecutive_sync_failures)
 112         self.message("\t\tLast success @ %s" % nttime2string(n.last_success))
 113         self.message("")
 114
 115     def drsuapi_ReplicaInfo(ctx, info_type):
 116         '''call a DsReplicaInfo'''
 117
 118         req1 = drsuapi.DsReplicaGetInfoRequest1()
 119         req1.info_type = info_type
 120         try:
 121             (info_type, info) = ctx.drsuapi.DsReplicaGetInfo(ctx.drsuapi_handle, 1, req1)
 122         except Exception, e:
 123             raise CommandError("DsReplicaGetInfo of type %u failed" % info_type, e)
 124         return (info_type, info)
 125
 126
 127     def run(self, DC=None, sambaopts=None,
 128             credopts=None, versionopts=None, server=None):
 129
 130         self.lp = sambaopts.get_loadparm()
 131         if DC is None:
 132             DC = common.netcmd_dnsname(self.lp)
 133         self.server = DC
 134         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
 135
 136         drsuapi_connect(self)
 137         samdb_connect(self)
 138
 139         # show domain information
 140         ntds_dn = get_dsServiceName(self.samdb)
 141         server_dns = self.samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["dnsHostName"])[0]['dnsHostName'][0]
 142
 143         (site, server) = drs_parse_ntds_dn(ntds_dn)
 144         try:
 145             ntds = self.samdb.search(base=ntds_dn, scope=ldb.SCOPE_BASE, attrs=['options', 'objectGUID', 'invocationId'])
 146         except Exception, e:
 147             raise CommandError("Failed to search NTDS DN %s" % ntds_dn)
 148         conn = self.samdb.search(base=ntds_dn, expression="(objectClass=nTDSConnection)")
 149
 150         self.message("%s\\%s" % (site, server))
 151         self.message("DSA Options: 0x%08x" % int(attr_default(ntds[0], "options", 0)))
 152         self.message("DSA object GUID: %s" % self.samdb.schema_format_value("objectGUID", ntds[0]["objectGUID"][0]))
 153         self.message("DSA invocationId: %s\n" % self.samdb.schema_format_value("objectGUID", ntds[0]["invocationId"][0]))
 154
 155         self.message("==== INBOUND NEIGHBORS ====\n")
 156         (info_type, info) = self.drsuapi_ReplicaInfo(drsuapi.DRSUAPI_DS_REPLICA_INFO_NEIGHBORS)
 157         for n in info.array:
 158             self.print_neighbour(n)
 159
 160
 161         self.message("==== OUTBOUND NEIGHBORS ====\n")
 162         (info_type, info) = self.drsuapi_ReplicaInfo(drsuapi.DRSUAPI_DS_REPLICA_INFO_REPSTO)
 163         for n in info.array:
 164             self.print_neighbour(n)
 165
 166         reasons = ['NTDSCONN_KCC_GC_TOPOLOGY',
 167                    'NTDSCONN_KCC_RING_TOPOLOGY',
 168                    'NTDSCONN_KCC_MINIMIZE_HOPS_TOPOLOGY',
 169                    'NTDSCONN_KCC_STALE_SERVERS_TOPOLOGY',
 170                    'NTDSCONN_KCC_OSCILLATING_CONNECTION_TOPOLOGY',
 171                    'NTDSCONN_KCC_INTERSITE_GC_TOPOLOGY',
 172                    'NTDSCONN_KCC_INTERSITE_TOPOLOGY',
 173                    'NTDSCONN_KCC_SERVER_FAILOVER_TOPOLOGY',
 174                    'NTDSCONN_KCC_SITE_FAILOVER_TOPOLOGY',
 175                    'NTDSCONN_KCC_REDUNDANT_SERVER_TOPOLOGY']
 176
 177         self.message("==== KCC CONNECTION OBJECTS ====\n")
 178         for c in conn:
 179             self.message("Connection --")
 180             self.message("\tConnection name: %s" % c['name'][0])
 181             self.message("\tEnabled        : %s" % attr_default(c, 'enabledConnection', 'TRUE'))
 182             self.message("\tServer DNS name : %s" % server_dns)
 183             self.message("\tServer DN name  : %s" % c['fromServer'][0])
 184             self.message("\t\tTransportType: RPC")
 185             self.message("\t\toptions: 0x%08X" % int(attr_default(c, 'options', 0)))
 186             if not 'mS-DS-ReplicatesNCReason' in c:
 187                 self.message("Warning: No NC replicated for Connection!")
 188                 continue
 189             for r in c['mS-DS-ReplicatesNCReason']:
 190                 a = str(r).split(':')
 191                 self.message("\t\tReplicatesNC: %s" % a[3])
 192                 self.message("\t\tReason: 0x%08x" % int(a[2]))
 193                 for s in reasons:
 194                     if getattr(dsdb, s, 0) & int(a[2]):
 195                         self.message("\t\t\t%s" % s)
 196
 197
 198 class cmd_drs_kcc(Command):
 199     """trigger knowledge consistency center run"""
 200
 201     synopsis = "%prog drs kcc <DC> [options]"
 202
 203     takes_args = ["DC?"]
 204
 205     def run(self, DC=None, sambaopts=None,
 206             credopts=None, versionopts=None, server=None):
 207
 208         self.lp = sambaopts.get_loadparm()
 209         if DC is None:
 210             DC = common.netcmd_dnsname(self.lp)
 211         self.server = DC
 212
 213         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
 214
 215         drsuapi_connect(self)
 216
 217         req1 = drsuapi.DsExecuteKCC1()
 218         try:
 219             self.drsuapi.DsExecuteKCC(self.drsuapi_handle, 1, req1)
 220         except Exception, e:
 221             raise CommandError("DsExecuteKCC failed", e)
 222         self.message("Consistency check on %s successful." % DC)
 223
 224
 225 def drs_local_replicate(self, SOURCE_DC, NC):
 226     '''replicate from a source DC to the local SAM'''
 227     self.server = SOURCE_DC
 228     drsuapi_connect(self)
 229
 230     self.local_samdb = SamDB(session_info=system_session(), url=None,
 231                              credentials=self.creds, lp=self.lp)
 232
 233     self.samdb = SamDB(url="ldap://%s" % self.server,
 234                        session_info=system_session(),
 235                        credentials=self.creds, lp=self.lp)
 236
 237     # work out the source and destination GUIDs
 238     res = self.local_samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["dsServiceName"])
 239     self.ntds_dn = res[0]["dsServiceName"][0]
 240
 241     res = self.local_samdb.search(base=self.ntds_dn, scope=ldb.SCOPE_BASE, attrs=["objectGUID"])
 242     self.ntds_guid = misc.GUID(self.samdb.schema_format_value("objectGUID", res[0]["objectGUID"][0]))
 243
 244
 245     source_dsa_invocation_id = misc.GUID(self.samdb.get_invocation_id())
 246     destination_dsa_guid = self.ntds_guid
 247
 248     self.samdb.transaction_start()
 249     repl = drs_utils.drs_Replicate("ncacn_ip_tcp:%s[seal]" % self.server, self.lp,
 250                                    self.creds, self.local_samdb)
 251     try:
 252         repl.replicate(NC, source_dsa_invocation_id, destination_dsa_guid)
 253     except Exception, e:
 254         raise CommandError("Error replicating DN %s" % NC, e)
 255     self.samdb.transaction_commit()
 256
 257
 258
 259 class cmd_drs_replicate(Command):
 260     """replicate a naming context between two DCs"""
 261
 262     synopsis = "%prog drs replicate <destinationDC> <sourceDC> <NC> [options]"
 263
 264     takes_args = ["DEST_DC", "SOURCE_DC", "NC"]
 265
 266     takes_options = [
 267         Option("--add-ref", help="use ADD_REF to add to repsTo on source", action="store_true"),
 268         Option("--sync-forced", help="use SYNC_FORCED to force inbound replication", action="store_true"),
 269         Option("--local", help="pull changes directly into the local database (destination DC is ignored)", action="store_true"),
 270         ]
 271
 272     def run(self, DEST_DC, SOURCE_DC, NC, add_ref=False, sync_forced=False, local=False,
 273             sambaopts=None,
 274             credopts=None, versionopts=None, server=None):
 275
 276         self.server = DEST_DC
 277         self.lp = sambaopts.get_loadparm()
 278
 279         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
 280
 281         if local:
 282             drs_local_replicate(self, SOURCE_DC, NC)
 283             return
 284
 285         drsuapi_connect(self)
 286         samdb_connect(self)
 287
 288         # we need to find the NTDS GUID of the source DC
 289         msg = self.samdb.search(base=self.samdb.get_config_basedn(),
 290                                 expression="(&(objectCategory=server)(|(name=%s)(dNSHostName=%s)))" % (
 291             ldb.binary_encode(SOURCE_DC),
 292             ldb.binary_encode(SOURCE_DC)),
 293                                 attrs=[])
 294         if len(msg) == 0:
 295             raise CommandError("Failed to find source DC %s" % SOURCE_DC)
 296         server_dn = msg[0]['dn']
 297
 298         msg = self.samdb.search(base=server_dn, scope=ldb.SCOPE_ONELEVEL,
 299                                 expression="(|(objectCategory=nTDSDSA)(objectCategory=nTDSDSARO))",
 300                                 attrs=['objectGUID', 'options'])
 301         if len(msg) == 0:
 302             raise CommandError("Failed to find source NTDS DN %s" % SOURCE_DC)
 303         source_dsa_guid = msg[0]['objectGUID'][0]
 304         options = int(attr_default(msg, 'options', 0))
 305
 306         nc = drsuapi.DsReplicaObjectIdentifier()
 307         nc.dn = NC
 308
 309         req1 = drsuapi.DsReplicaSyncRequest1()
 310         req1.naming_context = nc;
 311         req1.options = 0
 312         if not (options & dsdb.DS_NTDSDSA_OPT_DISABLE_OUTBOUND_REPL):
 313             req1.options |= drsuapi.DRSUAPI_DRS_WRIT_REP
 314         if add_ref:
 315             req1.options |= drsuapi.DRSUAPI_DRS_ADD_REF
 316         if sync_forced:
 317             req1.options |= drsuapi.DRSUAPI_DRS_SYNC_FORCED
 318         req1.source_dsa_guid = misc.GUID(source_dsa_guid)
 319
 320         try:
 321             self.drsuapi.DsReplicaSync(self.drsuapi_handle, 1, req1)
 322         except Exception, estr:
 323             raise CommandError("DsReplicaSync failed", estr)
 324         self.message("Replicate from %s to %s was successful." % (SOURCE_DC, DEST_DC))
 325
 326
 327
 328 class cmd_drs_bind(Command):
 329     """show DRS capabilities of a server"""
 330
 331     synopsis = "%prog drs bind <DC> [options]"
 332
 333     takes_args = ["DC?"]
 334
 335     def run(self, DC=None, sambaopts=None,
 336             credopts=None, versionopts=None, server=None):
 337
 338         self.lp = sambaopts.get_loadparm()
 339         if DC is None:
 340             DC = common.netcmd_dnsname(self.lp)
 341         self.server = DC
 342         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
 343
 344         drsuapi_connect(self)
 345         samdb_connect(self)
 346
 347         bind_info = drsuapi.DsBindInfoCtr()
 348         bind_info.length = 28
 349         bind_info.info = drsuapi.DsBindInfo28()
 350         (info, handle) = self.drsuapi.DsBind(misc.GUID(drsuapi.DRSUAPI_DS_BIND_GUID), bind_info)
 351
 352         optmap = [
 353             ("DRSUAPI_SUPPORTED_EXTENSION_BASE" ,                       "DRS_EXT_BASE"),
 354             ("DRSUAPI_SUPPORTED_EXTENSION_ASYNC_REPLICATION" ,          "DRS_EXT_ASYNCREPL"),
 355             ("DRSUAPI_SUPPORTED_EXTENSION_REMOVEAPI" ,                  "DRS_EXT_REMOVEAPI"),
 356             ("DRSUAPI_SUPPORTED_EXTENSION_MOVEREQ_V2" ,                 "DRS_EXT_MOVEREQ_V2"),
 357             ("DRSUAPI_SUPPORTED_EXTENSION_GETCHG_COMPRESS" ,            "DRS_EXT_GETCHG_DEFLATE"),
 358             ("DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V1" ,                  "DRS_EXT_DCINFO_V1"),
 359             ("DRSUAPI_SUPPORTED_EXTENSION_RESTORE_USN_OPTIMIZATION" ,   "DRS_EXT_RESTORE_USN_OPTIMIZATION"),
 360             ("DRSUAPI_SUPPORTED_EXTENSION_ADDENTRY" ,                   "DRS_EXT_ADDENTRY"),
 361             ("DRSUAPI_SUPPORTED_EXTENSION_KCC_EXECUTE" ,                "DRS_EXT_KCC_EXECUTE"),
 362             ("DRSUAPI_SUPPORTED_EXTENSION_ADDENTRY_V2" ,                "DRS_EXT_ADDENTRY_V2"),
 363             ("DRSUAPI_SUPPORTED_EXTENSION_LINKED_VALUE_REPLICATION" ,   "DRS_EXT_LINKED_VALUE_REPLICATION"),
 364             ("DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V2" ,                  "DRS_EXT_DCINFO_V2"),
 365             ("DRSUAPI_SUPPORTED_EXTENSION_INSTANCE_TYPE_NOT_REQ_ON_MOD","DRS_EXT_INSTANCE_TYPE_NOT_REQ_ON_MOD"),
 366             ("DRSUAPI_SUPPORTED_EXTENSION_CRYPTO_BIND" ,                "DRS_EXT_CRYPTO_BIND"),
 367             ("DRSUAPI_SUPPORTED_EXTENSION_GET_REPL_INFO" ,              "DRS_EXT_GET_REPL_INFO"),
 368             ("DRSUAPI_SUPPORTED_EXTENSION_STRONG_ENCRYPTION" ,          "DRS_EXT_STRONG_ENCRYPTION"),
 369             ("DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V01" ,                 "DRS_EXT_DCINFO_VFFFFFFFF"),
 370             ("DRSUAPI_SUPPORTED_EXTENSION_TRANSITIVE_MEMBERSHIP" ,      "DRS_EXT_TRANSITIVE_MEMBERSHIP"),
 371             ("DRSUAPI_SUPPORTED_EXTENSION_ADD_SID_HISTORY" ,            "DRS_EXT_ADD_SID_HISTORY"),
 372             ("DRSUAPI_SUPPORTED_EXTENSION_POST_BETA3" ,                 "DRS_EXT_POST_BETA3"),
 373             ("DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V5" ,               "DRS_EXT_GETCHGREQ_V5"),
 374             ("DRSUAPI_SUPPORTED_EXTENSION_GET_MEMBERSHIPS2" ,           "DRS_EXT_GETMEMBERSHIPS2"),
 375             ("DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V6" ,               "DRS_EXT_GETCHGREQ_V6"),
 376             ("DRSUAPI_SUPPORTED_EXTENSION_NONDOMAIN_NCS" ,              "DRS_EXT_NONDOMAIN_NCS"),
 377             ("DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V8" ,               "DRS_EXT_GETCHGREQ_V8"),
 378             ("DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V5" ,             "DRS_EXT_GETCHGREPLY_V5"),
 379             ("DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V6" ,             "DRS_EXT_GETCHGREPLY_V6"),
 380             ("DRSUAPI_SUPPORTED_EXTENSION_ADDENTRYREPLY_V3" ,           "DRS_EXT_WHISTLER_BETA3"),
 381             ("DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V7" ,             "DRS_EXT_WHISTLER_BETA3"),
 382             ("DRSUAPI_SUPPORTED_EXTENSION_VERIFY_OBJECT" ,              "DRS_EXT_WHISTLER_BETA3"),
 383             ("DRSUAPI_SUPPORTED_EXTENSION_XPRESS_COMPRESS" ,            "DRS_EXT_W2K3_DEFLATE"),
 384             ("DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V10" ,              "DRS_EXT_GETCHGREQ_V10"),
 385             ("DRSUAPI_SUPPORTED_EXTENSION_RESERVED_PART2" ,             "DRS_EXT_RESERVED_FOR_WIN2K_OR_DOTNET_PART2"),
 386             ("DRSUAPI_SUPPORTED_EXTENSION_RESERVED_PART3" ,             "DRS_EXT_RESERVED_FOR_WIN2K_OR_DOTNET_PART3")
 387             ]
 388
 389         optmap_ext = [
 390             ("DRSUAPI_SUPPORTED_EXTENSION_ADAM",                        "DRS_EXT_ADAM"),
 391             ("DRSUAPI_SUPPORTED_EXTENSION_LH_BETA2",                    "DRS_EXT_LH_BETA2"),
 392             ("DRSUAPI_SUPPORTED_EXTENSION_RECYCLE_BIN",                 "DRS_EXT_RECYCLE_BIN")]
 393
 394         self.message("Bind to %s succeeded." % DC)
 395         self.message("Extensions supported:")
 396         for (opt, str) in optmap:
 397             optval = getattr(drsuapi, opt, 0)
 398             if info.info.supported_extensions & optval:
 399                 yesno = "Yes"
 400             else:
 401                 yesno = "No "
 402             self.message("  %-60s: %s (%s)" % (opt, yesno, str))
 403
 404         if isinstance(info.info, drsuapi.DsBindInfo48):
 405             self.message("\nExtended Extensions supported:")
 406             for (opt, str) in optmap_ext:
 407                 optval = getattr(drsuapi, opt, 0)
 408                 if info.info.supported_extensions_ext & optval:
 409                     yesno = "Yes"
 410                 else:
 411                     yesno = "No "
 412                 self.message("  %-60s: %s (%s)" % (opt, yesno, str))
 413
 414         self.message("\nSite GUID: %s" % info.info.site_guid)
 415         self.message("Repl epoch: %u" % info.info.repl_epoch)
 416         if isinstance(info.info, drsuapi.DsBindInfo48):
 417             self.message("Forest GUID: %s" % info.info.config_dn_guid)
 418
 419
 420
 421 class cmd_drs_options(Command):
 422     """query or change 'options' for NTDS Settings object of a domain controller"""
 423
 424     synopsis = ("%prog drs options <DC>"
 425                 " [--dsa-option={+|-}IS_GC | {+|-}DISABLE_INBOUND_REPL"
 426                 " |{+|-}DISABLE_OUTBOUND_REPL | {+|-}DISABLE_NTDSCONN_XLATE] [options]")
 427
 428     takes_args = ["DC?"]
 429
 430     takes_options = [
 431         Option("--dsa-option", help="DSA option to enable/disable", type="str"),
 432         ]
 433
 434     option_map = {"IS_GC": 0x00000001,
 435                   "DISABLE_INBOUND_REPL": 0x00000002,
 436                   "DISABLE_OUTBOUND_REPL": 0x00000004,
 437                   "DISABLE_NTDSCONN_XLATE": 0x00000008}
 438
 439     def run(self, DC=None, dsa_option=None,
 440             sambaopts=None, credopts=None, versionopts=None):
 441
 442         self.lp = sambaopts.get_loadparm()
 443         if DC is None:
 444             DC = common.netcmd_dnsname(self.lp)
 445         self.server = DC
 446         self.creds = credopts.get_credentials(self.lp, fallback_machine=True)
 447
 448         samdb_connect(self)
 449
 450         ntds_dn = get_dsServiceName(self.samdb)
 451         res = self.samdb.search(base=ntds_dn, scope=ldb.SCOPE_BASE, attrs=["options"])
 452         dsa_opts = int(res[0]["options"][0])
 453
 454         # print out current DSA options
 455         cur_opts = [x for x in self.option_map if self.option_map[x] & dsa_opts]
 456         self.message("Current DSA options: " + ", ".join(cur_opts))
 457
 458         # modify options
 459         if dsa_option:
 460             if dsa_option[:1] not in ("+", "-"):
 461                 raise CommandError("Unknown option %s" % dsa_option)
 462             flag = dsa_option[1:]
 463             if flag not in self.option_map.keys():
 464                 raise CommandError("Unknown option %s" % dsa_option)
 465             if dsa_option[:1] == "+":
 466                 dsa_opts |= self.option_map[flag]
 467             else:
 468                 dsa_opts &= ~self.option_map[flag]
 469             #save new options
 470             m = ldb.Message()
 471             m.dn = ldb.Dn(self.samdb, ntds_dn)
 472             m["options"]= ldb.MessageElement(str(dsa_opts), ldb.FLAG_MOD_REPLACE, "options")
 473             self.samdb.modify(m)
 474             # print out new DSA options
 475             cur_opts = [x for x in self.option_map if self.option_map[x] & dsa_opts]
 476             self.message("New DSA options: " + ", ".join(cur_opts))
 477
 478
 479 class cmd_drs(SuperCommand):
 480     """Directory Replication Services (DRS) management"""
 481
 482     subcommands = {}
 483     subcommands["bind"] = cmd_drs_bind()
 484     subcommands["kcc"] = cmd_drs_kcc()
 485     subcommands["replicate"] = cmd_drs_replicate()
 486     subcommands["showrepl"] = cmd_drs_showrepl()
 487     subcommands["options"] = cmd_drs_options()