source4/scripting/python/samba/join.py

   1 #!/usr/bin/env python
   2 #
   3 # python join code
   4 # Copyright Andrew Tridgell 2010
   5 # Copyright Andrew Bartlett 2010
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 #
  20
  21 """Joining a domain."""
  22
  23 from samba.auth import system_session
  24 from samba.samdb import SamDB
  25 from samba import gensec, Ldb, drs_utils
  26 import ldb, samba, sys, uuid
  27 from samba.ndr import ndr_pack
  28 from samba.dcerpc import security, drsuapi, misc, nbt, lsa, drsblobs
  29 from samba.credentials import Credentials, DONT_USE_KERBEROS
  30 from samba.provision import secretsdb_self_join, provision, provision_fill, FILL_DRS, FILL_SUBDOMAIN
  31 from samba.schema import Schema
  32 from samba.net import Net
  33 import logging
  34 import talloc
  35 import random
  36 import time
  37
  38 # this makes debugging easier
  39 talloc.enable_null_tracking()
  40
  41 class DCJoinException(Exception):
  42
  43     def __init__(self, msg):
  44         super(DCJoinException, self).__init__("Can't join, error: %s" % msg)
  45
  46
  47 class dc_join(object):
  48     '''perform a DC join'''
  49
  50     def __init__(ctx, server=None, creds=None, lp=None, site=None,
  51             netbios_name=None, targetdir=None, domain=None):
  52         ctx.creds = creds
  53         ctx.lp = lp
  54         ctx.site = site
  55         ctx.netbios_name = netbios_name
  56         ctx.targetdir = targetdir
  57
  58         ctx.creds.set_gensec_features(creds.get_gensec_features() | gensec.FEATURE_SEAL)
  59         ctx.net = Net(creds=ctx.creds, lp=ctx.lp)
  60
  61         if server is not None:
  62             ctx.server = server
  63         else:
  64             print("Finding a writeable DC for domain '%s'" % domain)
  65             ctx.server = ctx.find_dc(domain)
  66             print("Found DC %s" % ctx.server)
  67
  68         ctx.samdb = SamDB(url="ldap://%s" % ctx.server,
  69                           session_info=system_session(),
  70                           credentials=ctx.creds, lp=ctx.lp)
  71
  72         try:
  73             ctx.samdb.search(scope=ldb.SCOPE_ONELEVEL, attrs=["dn"])
  74         except ldb.LdbError, (enum, estr):
  75             raise DCJoinException(estr)
  76
  77
  78         ctx.myname = netbios_name
  79         ctx.samname = "%s$" % ctx.myname
  80         ctx.base_dn = str(ctx.samdb.get_default_basedn())
  81         ctx.root_dn = str(ctx.samdb.get_root_basedn())
  82         ctx.schema_dn = str(ctx.samdb.get_schema_basedn())
  83         ctx.config_dn = str(ctx.samdb.get_config_basedn())
  84         ctx.domsid = ctx.samdb.get_domain_sid()
  85         ctx.domain_name = ctx.get_domain_name()
  86         ctx.forest_domain_name = ctx.get_forest_domain_name()
  87         ctx.invocation_id = misc.GUID(str(uuid.uuid4()))
  88
  89         ctx.dc_ntds_dn = ctx.get_dsServiceName()
  90         ctx.dc_dnsHostName = ctx.get_dnsHostName()
  91         ctx.behavior_version = ctx.get_behavior_version()
  92
  93         ctx.acct_pass = samba.generate_random_password(32, 40)
  94
  95         # work out the DNs of all the objects we will be adding
  96         ctx.server_dn = "CN=%s,CN=Servers,CN=%s,CN=Sites,%s" % (ctx.myname, ctx.site, ctx.config_dn)
  97         ctx.ntds_dn = "CN=NTDS Settings,%s" % ctx.server_dn
  98         topology_base = "CN=Topology,CN=Domain System Volume,CN=DFSR-GlobalSettings,CN=System,%s" % ctx.base_dn
  99         if ctx.dn_exists(topology_base):
 100             ctx.topology_dn = "CN=%s,%s" % (ctx.myname, topology_base)
 101         else:
 102             ctx.topology_dn = None
 103
 104         ctx.dnsdomain = ctx.samdb.domain_dns_name()
 105         ctx.dnsforest = ctx.samdb.forest_dns_name()
 106         ctx.dnshostname = "%s.%s" % (ctx.myname, ctx.dnsdomain)
 107
 108         ctx.realm = ctx.dnsdomain
 109
 110         ctx.acct_dn = "CN=%s,OU=Domain Controllers,%s" % (ctx.myname, ctx.base_dn)
 111
 112         ctx.tmp_samdb = None
 113
 114         ctx.SPNs = [ "HOST/%s" % ctx.myname,
 115                      "HOST/%s" % ctx.dnshostname,
 116                      "GC/%s/%s" % (ctx.dnshostname, ctx.dnsforest) ]
 117
 118         # these elements are optional
 119         ctx.never_reveal_sid = None
 120         ctx.reveal_sid = None
 121         ctx.connection_dn = None
 122         ctx.RODC = False
 123         ctx.krbtgt_dn = None
 124         ctx.drsuapi = None
 125         ctx.managedby = None
 126         ctx.subdomain = False
 127
 128     def del_noerror(ctx, dn, recursive=False):
 129         if recursive:
 130             try:
 131                 res = ctx.samdb.search(base=dn, scope=ldb.SCOPE_ONELEVEL, attrs=["dn"])
 132             except Exception:
 133                 return
 134             for r in res:
 135                 ctx.del_noerror(r.dn, recursive=True)
 136         try:
 137             ctx.samdb.delete(dn)
 138             print "Deleted %s" % dn
 139         except Exception:
 140             pass
 141
 142     def cleanup_old_join(ctx):
 143         '''remove any DNs from a previous join'''
 144         try:
 145             # find the krbtgt link
 146             print("checking samaccountname")
 147             if ctx.subdomain:
 148                 res = None
 149             else:
 150                 res = ctx.samdb.search(base=ctx.samdb.get_default_basedn(),
 151                                        expression='samAccountName=%s' % ldb.binary_encode(ctx.samname),
 152                                        attrs=["msDS-krbTgtLink"])
 153                 if res:
 154                     ctx.del_noerror(res[0].dn, recursive=True)
 155             if ctx.connection_dn is not None:
 156                 ctx.del_noerror(ctx.connection_dn)
 157             if ctx.krbtgt_dn is not None:
 158                 ctx.del_noerror(ctx.krbtgt_dn)
 159             ctx.del_noerror(ctx.ntds_dn)
 160             ctx.del_noerror(ctx.server_dn, recursive=True)
 161             if ctx.topology_dn:
 162                 ctx.del_noerror(ctx.topology_dn)
 163             if ctx.partition_dn:
 164                 ctx.del_noerror(ctx.partition_dn)
 165             if res:
 166                 ctx.new_krbtgt_dn = res[0]["msDS-Krbtgtlink"][0]
 167                 ctx.del_noerror(ctx.new_krbtgt_dn)
 168
 169             if ctx.subdomain:
 170                 binding_options = "sign"
 171                 lsaconn = lsa.lsarpc("ncacn_ip_tcp:%s[%s]" % (ctx.server, binding_options),
 172                                      ctx.lp, ctx.creds)
 173
 174                 objectAttr = lsa.ObjectAttribute()
 175                 objectAttr.sec_qos = lsa.QosInfo()
 176
 177                 pol_handle = lsaconn.OpenPolicy2(''.decode('utf-8'),
 178                                                  objectAttr, security.SEC_FLAG_MAXIMUM_ALLOWED)
 179
 180                 name = lsa.String()
 181                 name.string = ctx.realm
 182                 info = lsaconn.QueryTrustedDomainInfoByName(pol_handle, name, lsa.LSA_TRUSTED_DOMAIN_INFO_FULL_INFO)
 183
 184                 lsaconn.DeleteTrustedDomain(pol_handle, info.info_ex.sid)
 185
 186                 name = lsa.String()
 187                 name.string = ctx.forest_domain_name
 188                 info = lsaconn.QueryTrustedDomainInfoByName(pol_handle, name, lsa.LSA_TRUSTED_DOMAIN_INFO_FULL_INFO)
 189
 190                 lsaconn.DeleteTrustedDomain(pol_handle, info.info_ex.sid)
 191
 192         except Exception:
 193             pass
 194
 195     def find_dc(ctx, domain):
 196         '''find a writeable DC for the given domain'''
 197         try:
 198             ctx.cldap_ret = ctx.net.finddc(domain, nbt.NBT_SERVER_LDAP | nbt.NBT_SERVER_DS | nbt.NBT_SERVER_WRITABLE)
 199         except Exception:
 200             raise Exception("Failed to find a writeable DC for domain '%s'" % domain)
 201         if ctx.cldap_ret.client_site is not None and ctx.cldap_ret.client_site != "":
 202             ctx.site = ctx.cldap_ret.client_site
 203         return ctx.cldap_ret.pdc_dns_name
 204
 205
 206     def get_dsServiceName(ctx):
 207         res = ctx.samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["dsServiceName"])
 208         return res[0]["dsServiceName"][0]
 209
 210     def get_behavior_version(ctx):
 211         res = ctx.samdb.search(base=ctx.base_dn, scope=ldb.SCOPE_BASE, attrs=["msDS-Behavior-Version"])
 212         if "msDS-Behavior-Version" in res[0]:
 213             return int(res[0]["msDS-Behavior-Version"][0])
 214         else:
 215             return samba.dsdb.DS_DOMAIN_FUNCTION_2000
 216
 217     def get_dnsHostName(ctx):
 218         res = ctx.samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["dnsHostName"])
 219         return res[0]["dnsHostName"][0]
 220
 221     def get_domain_name(ctx):
 222         '''get netbios name of the domain from the partitions record'''
 223         partitions_dn = ctx.samdb.get_partitions_dn()
 224         res = ctx.samdb.search(base=partitions_dn, scope=ldb.SCOPE_ONELEVEL, attrs=["nETBIOSName"],
 225                                expression='ncName=%s' % ctx.samdb.get_default_basedn())
 226         return res[0]["nETBIOSName"][0]
 227
 228     def get_forest_domain_name(ctx):
 229         '''get netbios name of the domain from the partitions record'''
 230         partitions_dn = ctx.samdb.get_partitions_dn()
 231         res = ctx.samdb.search(base=partitions_dn, scope=ldb.SCOPE_ONELEVEL, attrs=["nETBIOSName"],
 232                                expression='ncName=%s' % ctx.samdb.get_root_basedn())
 233         return res[0]["nETBIOSName"][0]
 234
 235     def get_parent_partition_dn(ctx):
 236         '''get the parent domain partition DN from parent DNS name'''
 237         res = ctx.samdb.search(base=ctx.config_dn, attrs=[],
 238                                expression='(&(objectclass=crossRef)(dnsRoot=%s)(systemFlags:%s:=%u))' %
 239                                (ctx.parent_dnsdomain, ldb.OID_COMPARATOR_AND, samba.dsdb.SYSTEM_FLAG_CR_NTDS_DOMAIN))
 240         return str(res[0].dn)
 241
 242     def get_naming_master(ctx):
 243         '''get the parent domain partition DN from parent DNS name'''
 244         res = ctx.samdb.search(base='CN=Partitions,%s' % ctx.config_dn, attrs=['fSMORoleOwner'],
 245                                scope=ldb.SCOPE_BASE, controls=["extended_dn:1:1"])
 246         if not 'fSMORoleOwner' in res[0]:
 247             raise DCJoinException("Can't find naming master on partition DN %s" % ctx.partition_dn)
 248         master_guid = str(misc.GUID(ldb.Dn(ctx.samdb, res[0]['fSMORoleOwner'][0]).get_extended_component('GUID')))
 249         master_host = '%s._msdcs.%s' % (master_guid, ctx.dnsforest)
 250         return master_host
 251
 252     def get_mysid(ctx):
 253         '''get the SID of the connected user. Only works with w2k8 and later,
 254            so only used for RODC join'''
 255         res = ctx.samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["tokenGroups"])
 256         binsid = res[0]["tokenGroups"][0]
 257         return ctx.samdb.schema_format_value("objectSID", binsid)
 258
 259     def dn_exists(ctx, dn):
 260         '''check if a DN exists'''
 261         try:
 262             res = ctx.samdb.search(base=dn, scope=ldb.SCOPE_BASE, attrs=[])
 263         except ldb.LdbError, (enum, estr):
 264             if enum == ldb.ERR_NO_SUCH_OBJECT:
 265                 return False
 266             raise
 267         return True
 268
 269     def add_krbtgt_account(ctx):
 270         '''RODCs need a special krbtgt account'''
 271         print "Adding %s" % ctx.krbtgt_dn
 272         rec = {
 273             "dn" : ctx.krbtgt_dn,
 274             "objectclass" : "user",
 275             "useraccountcontrol" : str(samba.dsdb.UF_NORMAL_ACCOUNT |
 276                                        samba.dsdb.UF_ACCOUNTDISABLE),
 277             "showinadvancedviewonly" : "TRUE",
 278             "description" : "krbtgt for %s" % ctx.samname}
 279         ctx.samdb.add(rec, ["rodc_join:1:1"])
 280
 281         # now we need to search for the samAccountName attribute on the krbtgt DN,
 282         # as this will have been magically set to the krbtgt number
 283         res = ctx.samdb.search(base=ctx.krbtgt_dn, scope=ldb.SCOPE_BASE, attrs=["samAccountName"])
 284         ctx.krbtgt_name = res[0]["samAccountName"][0]
 285
 286         print "Got krbtgt_name=%s" % ctx.krbtgt_name
 287
 288         m = ldb.Message()
 289         m.dn = ldb.Dn(ctx.samdb, ctx.acct_dn)
 290         m["msDS-krbTgtLink"] = ldb.MessageElement(ctx.krbtgt_dn,
 291                                                   ldb.FLAG_MOD_REPLACE, "msDS-krbTgtLink")
 292         ctx.samdb.modify(m)
 293
 294         ctx.new_krbtgt_dn = "CN=%s,CN=Users,%s" % (ctx.krbtgt_name, ctx.base_dn)
 295         print "Renaming %s to %s" % (ctx.krbtgt_dn, ctx.new_krbtgt_dn)
 296         ctx.samdb.rename(ctx.krbtgt_dn, ctx.new_krbtgt_dn)
 297
 298     def drsuapi_connect(ctx):
 299         '''make a DRSUAPI connection to the naming master'''
 300         binding_options = "seal"
 301         if int(ctx.lp.get("log level")) >= 4:
 302             binding_options += ",print"
 303         binding_string = "ncacn_ip_tcp:%s[%s]" % (ctx.server, binding_options)
 304         ctx.drsuapi = drsuapi.drsuapi(binding_string, ctx.lp, ctx.creds)
 305         (ctx.drsuapi_handle, ctx.bind_supported_extensions) = drs_utils.drs_DsBind(ctx.drsuapi)
 306
 307     def create_tmp_samdb(ctx):
 308         '''create a temporary samdb object for schema queries'''
 309         ctx.tmp_schema = Schema(security.dom_sid(ctx.domsid),
 310                                 schemadn=ctx.schema_dn)
 311         ctx.tmp_samdb = SamDB(session_info=system_session(), url=None, auto_connect=False,
 312                               credentials=ctx.creds, lp=ctx.lp, global_schema=False,
 313                               am_rodc=False)
 314         ctx.tmp_samdb.set_schema(ctx.tmp_schema)
 315
 316     def build_DsReplicaAttribute(ctx, attrname, attrvalue):
 317         '''build a DsReplicaAttributeCtr object'''
 318         r = drsuapi.DsReplicaAttribute()
 319         r.attid = ctx.tmp_samdb.get_attid_from_lDAPDisplayName(attrname)
 320         r.value_ctr = 1
 321
 322
 323     def DsAddEntry(ctx, recs):
 324         '''add a record via the DRSUAPI DsAddEntry call'''
 325         if ctx.drsuapi is None:
 326             ctx.drsuapi_connect()
 327         if ctx.tmp_samdb is None:
 328             ctx.create_tmp_samdb()
 329
 330         objects = []
 331         for rec in recs:
 332             id = drsuapi.DsReplicaObjectIdentifier()
 333             id.dn = rec['dn']
 334
 335             attrs = []
 336             for a in rec:
 337                 if a == 'dn':
 338                     continue
 339                 if not isinstance(rec[a], list):
 340                     v = [rec[a]]
 341                 else:
 342                     v = rec[a]
 343                 rattr = ctx.tmp_samdb.dsdb_DsReplicaAttribute(ctx.tmp_samdb, a, v)
 344                 attrs.append(rattr)
 345
 346             attribute_ctr = drsuapi.DsReplicaAttributeCtr()
 347             attribute_ctr.num_attributes = len(attrs)
 348             attribute_ctr.attributes = attrs
 349
 350             object = drsuapi.DsReplicaObject()
 351             object.identifier = id
 352             object.attribute_ctr = attribute_ctr
 353
 354             list_object = drsuapi.DsReplicaObjectListItem()
 355             list_object.object = object
 356             objects.append(list_object)
 357
 358         req2 = drsuapi.DsAddEntryRequest2()
 359         req2.first_object = objects[0]
 360         prev = req2.first_object
 361         for o in objects[1:]:
 362             prev.next_object = o
 363             prev = o
 364
 365         (level, ctr) = ctx.drsuapi.DsAddEntry(ctx.drsuapi_handle, 2, req2)
 366         if level == 2:
 367             if ctr.dir_err != drsuapi.DRSUAPI_DIRERR_OK:
 368                 print("DsAddEntry failed with dir_err %u" % ctr.dir_err)
 369                 raise RuntimeError("DsAddEntry failed")
 370             if ctr.extended_err != (0, 'WERR_OK'):
 371                 print("DsAddEntry failed with status %s info %s" % (ctr.extended_err))
 372                 raise RuntimeError("DsAddEntry failed")
 373         if level == 3:
 374             if ctr.err_ver != 1:
 375                 raise RuntimeError("expected err_ver 1, got %u" % ctr.err_ver)
 376             if ctr.err_data.status != (0, 'WERR_OK'):
 377                 print("DsAddEntry failed with status %s info %s" % (ctr.err_data.status,
 378                                                                     ctr.err_data.info.extended_err))
 379                 raise RuntimeError("DsAddEntry failed")
 380             if ctr.err_data.dir_err != drsuapi.DRSUAPI_DIRERR_OK:
 381                 print("DsAddEntry failed with dir_err %u" % ctr.err_data.dir_err)
 382                 raise RuntimeError("DsAddEntry failed")
 383
 384         return ctr.objects
 385
 386     def join_add_ntdsdsa(ctx):
 387         '''add the ntdsdsa object'''
 388         # FIXME: the partition (NC) assignment has to be made dynamic
 389         print "Adding %s" % ctx.ntds_dn
 390         rec = {
 391             "dn" : ctx.ntds_dn,
 392             "objectclass" : "nTDSDSA",
 393             "systemFlags" : str(samba.dsdb.SYSTEM_FLAG_DISALLOW_MOVE_ON_DELETE),
 394             "dMDLocation" : ctx.schema_dn}
 395
 396         nc_list = [ ctx.base_dn, ctx.config_dn, ctx.schema_dn ]
 397
 398         if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
 399             rec["msDS-Behavior-Version"] = str(ctx.behavior_version)
 400
 401         if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
 402             rec["msDS-HasDomainNCs"] = ctx.base_dn
 403
 404         if ctx.RODC:
 405             rec["objectCategory"] = "CN=NTDS-DSA-RO,%s" % ctx.schema_dn
 406             rec["msDS-HasFullReplicaNCs"] = nc_list
 407             rec["options"] = "37"
 408             ctx.samdb.add(rec, ["rodc_join:1:1"])
 409         else:
 410             rec["objectCategory"] = "CN=NTDS-DSA,%s" % ctx.schema_dn
 411             rec["HasMasterNCs"]      = nc_list
 412             if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
 413                 rec["msDS-HasMasterNCs"] = nc_list
 414             rec["options"] = "1"
 415             rec["invocationId"] = ndr_pack(ctx.invocation_id)
 416             ctx.DsAddEntry([rec])
 417
 418         # find the GUID of our NTDS DN
 419         res = ctx.samdb.search(base=ctx.ntds_dn, scope=ldb.SCOPE_BASE, attrs=["objectGUID"])
 420         ctx.ntds_guid = misc.GUID(ctx.samdb.schema_format_value("objectGUID", res[0]["objectGUID"][0]))
 421
 422     def join_add_objects(ctx):
 423         '''add the various objects needed for the join'''
 424         if ctx.acct_dn:
 425             print "Adding %s" % ctx.acct_dn
 426             rec = {
 427                 "dn" : ctx.acct_dn,
 428                 "objectClass": "computer",
 429                 "displayname": ctx.samname,
 430                 "samaccountname" : ctx.samname,
 431                 "userAccountControl" : str(ctx.userAccountControl | samba.dsdb.UF_ACCOUNTDISABLE),
 432                 "dnshostname" : ctx.dnshostname}
 433             if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2008:
 434                 rec['msDS-SupportedEncryptionTypes'] = str(samba.dsdb.ENC_ALL_TYPES)
 435             if ctx.managedby:
 436                 rec["managedby"] = ctx.managedby
 437             if ctx.never_reveal_sid:
 438                 rec["msDS-NeverRevealGroup"] = ctx.never_reveal_sid
 439             if ctx.reveal_sid:
 440                 rec["msDS-RevealOnDemandGroup"] = ctx.reveal_sid
 441             ctx.samdb.add(rec)
 442
 443         if ctx.krbtgt_dn:
 444             ctx.add_krbtgt_account()
 445
 446         print "Adding %s" % ctx.server_dn
 447         rec = {
 448             "dn": ctx.server_dn,
 449             "objectclass" : "server",
 450             # windows uses 50000000 decimal for systemFlags. A windows hex/decimal mixup bug?
 451             "systemFlags" : str(samba.dsdb.SYSTEM_FLAG_CONFIG_ALLOW_RENAME |
 452                                 samba.dsdb.SYSTEM_FLAG_CONFIG_ALLOW_LIMITED_MOVE |
 453                                 samba.dsdb.SYSTEM_FLAG_DISALLOW_MOVE_ON_DELETE),
 454             # windows seems to add the dnsHostName later
 455             "dnsHostName" : ctx.dnshostname}
 456
 457         if ctx.acct_dn:
 458             rec["serverReference"] = ctx.acct_dn
 459
 460         ctx.samdb.add(rec)
 461
 462         if ctx.subdomain:
 463             # the rest is done after replication
 464             ctx.ntds_guid = None
 465             return
 466
 467         ctx.join_add_ntdsdsa()
 468
 469         if ctx.connection_dn is not None:
 470             print "Adding %s" % ctx.connection_dn
 471             rec = {
 472                 "dn" : ctx.connection_dn,
 473                 "objectclass" : "nTDSConnection",
 474                 "enabledconnection" : "TRUE",
 475                 "options" : "65",
 476                 "fromServer" : ctx.dc_ntds_dn}
 477             ctx.samdb.add(rec)
 478
 479         if ctx.acct_dn:
 480             print "Adding SPNs to %s" % ctx.acct_dn
 481             m = ldb.Message()
 482             m.dn = ldb.Dn(ctx.samdb, ctx.acct_dn)
 483             for i in range(len(ctx.SPNs)):
 484                 ctx.SPNs[i] = ctx.SPNs[i].replace("$NTDSGUID", str(ctx.ntds_guid))
 485             m["servicePrincipalName"] = ldb.MessageElement(ctx.SPNs,
 486                                                            ldb.FLAG_MOD_ADD,
 487                                                            "servicePrincipalName")
 488             ctx.samdb.modify(m)
 489
 490             print "Setting account password for %s" % ctx.samname
 491             ctx.samdb.setpassword("(&(objectClass=user)(sAMAccountName=%s))" % ldb.binary_encode(ctx.samname),
 492                                   ctx.acct_pass,
 493                                   force_change_at_next_login=False,
 494                                   username=ctx.samname)
 495             res = ctx.samdb.search(base=ctx.acct_dn, scope=ldb.SCOPE_BASE, attrs=["msDS-keyVersionNumber"])
 496             ctx.key_version_number = int(res[0]["msDS-keyVersionNumber"][0])
 497
 498             print("Enabling account")
 499             m = ldb.Message()
 500             m.dn = ldb.Dn(ctx.samdb, ctx.acct_dn)
 501             m["userAccountControl"] = ldb.MessageElement(str(ctx.userAccountControl),
 502                                                          ldb.FLAG_MOD_REPLACE,
 503                                                          "userAccountControl")
 504             ctx.samdb.modify(m)
 505
 506     def join_add_objects2(ctx):
 507         '''add the various objects needed for the join, for subdomains post replication'''
 508
 509         print "Adding %s" % ctx.partition_dn
 510         # NOTE: windows sends a ntSecurityDescriptor here, we
 511         # let it default
 512         rec = {
 513             "dn" : ctx.partition_dn,
 514             "objectclass" : "crossRef",
 515             "objectCategory" : "CN=Cross-Ref,%s" % ctx.schema_dn,
 516             "nCName" : ctx.base_dn,
 517             "nETBIOSName" : ctx.domain_name,
 518             "dnsRoot": ctx.dnsdomain,
 519             "trustParent" : ctx.parent_partition_dn,
 520             "systemFlags" : str(samba.dsdb.SYSTEM_FLAG_CR_NTDS_NC|samba.dsdb.SYSTEM_FLAG_CR_NTDS_DOMAIN)}
 521         if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
 522             rec["msDS-Behavior-Version"] = str(ctx.behavior_version)
 523
 524         rec2 = {
 525             "dn" : ctx.ntds_dn,
 526             "objectclass" : "nTDSDSA",
 527             "systemFlags" : str(samba.dsdb.SYSTEM_FLAG_DISALLOW_MOVE_ON_DELETE),
 528             "dMDLocation" : ctx.schema_dn}
 529
 530         nc_list = [ ctx.base_dn, ctx.config_dn, ctx.schema_dn ]
 531
 532         if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
 533             rec2["msDS-Behavior-Version"] = str(ctx.behavior_version)
 534
 535         if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
 536             rec2["msDS-HasDomainNCs"] = ctx.base_dn
 537
 538         rec2["objectCategory"] = "CN=NTDS-DSA,%s" % ctx.schema_dn
 539         rec2["HasMasterNCs"]      = nc_list
 540         if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
 541             rec2["msDS-HasMasterNCs"] = nc_list
 542         rec2["options"] = "1"
 543         rec2["invocationId"] = ndr_pack(ctx.invocation_id)
 544
 545         objects = ctx.DsAddEntry([rec, rec2])
 546         if len(objects) != 2:
 547             raise DCJoinException("Expected 2 objects from DsAddEntry")
 548
 549         ctx.ntds_guid = objects[1].guid
 550
 551         print("Replicating partition DN")
 552         ctx.repl.replicate(ctx.partition_dn,
 553                            misc.GUID("00000000-0000-0000-0000-000000000000"),
 554                            ctx.ntds_guid,
 555                            exop=drsuapi.DRSUAPI_EXOP_REPL_OBJ,
 556                            replica_flags=drsuapi.DRSUAPI_DRS_WRIT_REP)
 557
 558         print("Replicating NTDS DN")
 559         ctx.repl.replicate(ctx.ntds_dn,
 560                            misc.GUID("00000000-0000-0000-0000-000000000000"),
 561                            ctx.ntds_guid,
 562                            exop=drsuapi.DRSUAPI_EXOP_REPL_OBJ,
 563                            replica_flags=drsuapi.DRSUAPI_DRS_WRIT_REP)
 564
 565     def join_provision(ctx):
 566         '''provision the local SAM'''
 567
 568         print "Calling bare provision"
 569
 570         logger = logging.getLogger("provision")
 571         logger.addHandler(logging.StreamHandler(sys.stdout))
 572         smbconf = ctx.lp.configfile
 573
 574         presult = provision(logger, system_session(), None,
 575                             smbconf=smbconf, targetdir=ctx.targetdir, samdb_fill=FILL_DRS,
 576                             realm=ctx.realm, rootdn=ctx.root_dn, domaindn=ctx.base_dn,
 577                             schemadn=ctx.schema_dn,
 578                             configdn=ctx.config_dn,
 579                             serverdn=ctx.server_dn, domain=ctx.domain_name,
 580                             hostname=ctx.myname, domainsid=ctx.domsid,
 581                             machinepass=ctx.acct_pass, serverrole="domain controller",
 582                             sitename=ctx.site, lp=ctx.lp, ntdsguid=ctx.ntds_guid,
 583                             dns_backend="NONE")
 584         print "Provision OK for domain DN %s" % presult.domaindn
 585         ctx.local_samdb = presult.samdb
 586         ctx.lp          = presult.lp
 587         ctx.paths       = presult.paths
 588         ctx.names       = presult.names
 589
 590     def join_provision_own_domain(ctx):
 591         '''provision the local SAM'''
 592
 593         # we now operate exclusively on the local database, which
 594         # we need to reopen in order to get the newly created schema
 595         print("Reconnecting to local samdb")
 596         ctx.samdb = SamDB(url=ctx.local_samdb.url,
 597                           session_info=system_session(),
 598                           lp=ctx.local_samdb.lp,
 599                           global_schema=False)
 600         ctx.samdb.set_invocation_id(str(ctx.invocation_id))
 601         ctx.local_samdb = ctx.samdb
 602
 603         print("Finding domain GUID from ncName")
 604         res = ctx.local_samdb.search(base=ctx.partition_dn, scope=ldb.SCOPE_BASE, attrs=['ncName'],
 605                                      controls=["extended_dn:1:1"])
 606         domguid = str(misc.GUID(ldb.Dn(ctx.samdb, res[0]['ncName'][0]).get_extended_component('GUID')))
 607         print("Got domain GUID %s" % domguid)
 608
 609         print("Calling own domain provision")
 610
 611         logger = logging.getLogger("provision")
 612         logger.addHandler(logging.StreamHandler(sys.stdout))
 613
 614         secrets_ldb = Ldb(ctx.paths.secrets, session_info=system_session(), lp=ctx.lp)
 615
 616         presult = provision_fill(ctx.local_samdb, secrets_ldb,
 617                                  logger, ctx.names, ctx.paths, domainsid=security.dom_sid(ctx.domsid),
 618                                  domainguid=domguid,
 619                                  targetdir=ctx.targetdir, samdb_fill=FILL_SUBDOMAIN,
 620                                  machinepass=ctx.acct_pass, serverrole="domain controller",
 621                                  lp=ctx.lp, hostip=ctx.names.hostip, hostip6=ctx.names.hostip6,
 622                                  dns_backend="BIND9_FLATFILE")
 623         print("Provision OK for domain %s" % ctx.names.dnsdomain)
 624
 625     def join_replicate(ctx):
 626         '''replicate the SAM'''
 627
 628         print "Starting replication"
 629         ctx.local_samdb.transaction_start()
 630         try:
 631             source_dsa_invocation_id = misc.GUID(ctx.samdb.get_invocation_id())
 632             if ctx.ntds_guid is None:
 633                 print("Using DS_BIND_GUID_W2K3")
 634                 destination_dsa_guid = misc.GUID(drsuapi.DRSUAPI_DS_BIND_GUID_W2K3)
 635             else:
 636                 destination_dsa_guid = ctx.ntds_guid
 637
 638             if ctx.RODC:
 639                 repl_creds = Credentials()
 640                 repl_creds.guess(ctx.lp)
 641                 repl_creds.set_kerberos_state(DONT_USE_KERBEROS)
 642                 repl_creds.set_username(ctx.samname)
 643                 repl_creds.set_password(ctx.acct_pass)
 644             else:
 645                 repl_creds = ctx.creds
 646
 647             binding_options = "seal"
 648             if int(ctx.lp.get("log level")) >= 5:
 649                 binding_options += ",print"
 650             repl = drs_utils.drs_Replicate(
 651                 "ncacn_ip_tcp:%s[%s]" % (ctx.server, binding_options),
 652                 ctx.lp, repl_creds, ctx.local_samdb)
 653
 654             repl.replicate(ctx.schema_dn, source_dsa_invocation_id,
 655                     destination_dsa_guid, schema=True, rodc=ctx.RODC,
 656                     replica_flags=ctx.replica_flags)
 657             repl.replicate(ctx.config_dn, source_dsa_invocation_id,
 658                     destination_dsa_guid, rodc=ctx.RODC,
 659                     replica_flags=ctx.replica_flags)
 660             if not ctx.subdomain:
 661                 repl.replicate(ctx.base_dn, source_dsa_invocation_id,
 662                                destination_dsa_guid, rodc=ctx.RODC,
 663                                replica_flags=ctx.domain_replica_flags)
 664             if ctx.RODC:
 665                 repl.replicate(ctx.acct_dn, source_dsa_invocation_id,
 666                         destination_dsa_guid,
 667                         exop=drsuapi.DRSUAPI_EXOP_REPL_SECRET, rodc=True)
 668                 repl.replicate(ctx.new_krbtgt_dn, source_dsa_invocation_id,
 669                         destination_dsa_guid,
 670                         exop=drsuapi.DRSUAPI_EXOP_REPL_SECRET, rodc=True)
 671             ctx.repl = repl
 672             ctx.source_dsa_invocation_id = source_dsa_invocation_id
 673             ctx.destination_dsa_guid = destination_dsa_guid
 674
 675             print "Committing SAM database"
 676         except:
 677             ctx.local_samdb.transaction_cancel()
 678             raise
 679         else:
 680             ctx.local_samdb.transaction_commit()
 681
 682     def send_DsReplicaUpdateRefs(ctx, dn):
 683         r = drsuapi.DsReplicaUpdateRefsRequest1()
 684         r.naming_context = drsuapi.DsReplicaObjectIdentifier()
 685         r.naming_context.dn = str(dn)
 686         r.naming_context.guid = misc.GUID("00000000-0000-0000-0000-000000000000")
 687         r.naming_context.sid = security.dom_sid("S-0-0")
 688         r.dest_dsa_guid = ctx.ntds_guid
 689         r.dest_dsa_dns_name = "%s._msdcs.%s" % (str(ctx.ntds_guid), ctx.dnsforest)
 690         r.options = drsuapi.DRSUAPI_DRS_ADD_REF | drsuapi.DRSUAPI_DRS_DEL_REF
 691         if not ctx.RODC:
 692             r.options |= drsuapi.DRSUAPI_DRS_WRIT_REP
 693
 694         if ctx.drsuapi:
 695             ctx.drsuapi.DsReplicaUpdateRefs(ctx.drsuapi_handle, 1, r)
 696
 697     def join_finalise(ctx):
 698         '''finalise the join, mark us synchronised and setup secrets db'''
 699
 700         print "Sending DsReplicateUpdateRefs for all the partitions"
 701         ctx.send_DsReplicaUpdateRefs(ctx.schema_dn)
 702         ctx.send_DsReplicaUpdateRefs(ctx.config_dn)
 703         ctx.send_DsReplicaUpdateRefs(ctx.base_dn)
 704
 705         print "Setting isSynchronized and dsServiceName"
 706         m = ldb.Message()
 707         m.dn = ldb.Dn(ctx.local_samdb, '@ROOTDSE')
 708         m["isSynchronized"] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_REPLACE, "isSynchronized")
 709         m["dsServiceName"] = ldb.MessageElement("<GUID=%s>" % str(ctx.ntds_guid),
 710                                                 ldb.FLAG_MOD_REPLACE, "dsServiceName")
 711         ctx.local_samdb.modify(m)
 712
 713         if ctx.subdomain:
 714             return
 715
 716         secrets_ldb = Ldb(ctx.paths.secrets, session_info=system_session(), lp=ctx.lp)
 717
 718         print "Setting up secrets database"
 719         secretsdb_self_join(secrets_ldb, domain=ctx.domain_name,
 720                             realm=ctx.realm,
 721                             dnsdomain=ctx.dnsdomain,
 722                             netbiosname=ctx.myname,
 723                             domainsid=security.dom_sid(ctx.domsid),
 724                             machinepass=ctx.acct_pass,
 725                             secure_channel_type=ctx.secure_channel_type,
 726                             key_version_number=ctx.key_version_number)
 727
 728     def join_setup_trusts(ctx):
 729         '''provision the local SAM'''
 730
 731         def arcfour_encrypt(key, data):
 732             from Crypto.Cipher import ARC4
 733             c = ARC4.new(key)
 734             return c.encrypt(data)
 735
 736         def string_to_array(string):
 737             blob = [0] * len(string)
 738
 739             for i in range(len(string)):
 740                 blob[i] = ord(string[i])
 741
 742             return blob
 743
 744         print "Setup domain trusts with server %s" % ctx.server
 745         binding_options = ""  # why doesn't signing work here? w2k8r2 claims no session key
 746         lsaconn = lsa.lsarpc("ncacn_np:%s[%s]" % (ctx.server, binding_options),
 747                              ctx.lp, ctx.creds)
 748
 749         objectAttr = lsa.ObjectAttribute()
 750         objectAttr.sec_qos = lsa.QosInfo()
 751
 752         pol_handle = lsaconn.OpenPolicy2(''.decode('utf-8'),
 753                                          objectAttr, security.SEC_FLAG_MAXIMUM_ALLOWED)
 754
 755         info = lsa.TrustDomainInfoInfoEx()
 756         info.domain_name.string = ctx.dnsdomain
 757         info.netbios_name.string = ctx.domain_name
 758         info.sid = security.dom_sid(ctx.domsid)
 759         info.trust_direction = lsa.LSA_TRUST_DIRECTION_INBOUND | lsa.LSA_TRUST_DIRECTION_OUTBOUND
 760         info.trust_type = lsa.LSA_TRUST_TYPE_UPLEVEL
 761         info.trust_attributes = lsa.LSA_TRUST_ATTRIBUTE_WITHIN_FOREST
 762
 763         try:
 764             oldname = lsa.String()
 765             oldname.string = ctx.dnsdomain
 766             oldinfo = lsaconn.QueryTrustedDomainInfoByName(pol_handle, oldname,
 767                                                            lsa.LSA_TRUSTED_DOMAIN_INFO_FULL_INFO)
 768             print("Removing old trust record for %s (SID %s)" % (ctx.dnsdomain, oldinfo.info_ex.sid))
 769             lsaconn.DeleteTrustedDomain(pol_handle, oldinfo.info_ex.sid)
 770         except RuntimeError:
 771             pass
 772
 773         password_blob = string_to_array(ctx.trustdom_pass.encode('utf-16-le'))
 774
 775         clear_value = drsblobs.AuthInfoClear()
 776         clear_value.size = len(password_blob)
 777         clear_value.password = password_blob
 778
 779         clear_authentication_information = drsblobs.AuthenticationInformation()
 780         clear_authentication_information.LastUpdateTime = samba.unix2nttime(int(time.time()))
 781         clear_authentication_information.AuthType = lsa.TRUST_AUTH_TYPE_CLEAR
 782         clear_authentication_information.AuthInfo = clear_value
 783
 784         authentication_information_array = drsblobs.AuthenticationInformationArray()
 785         authentication_information_array.count = 1
 786         authentication_information_array.array = [clear_authentication_information]
 787
 788         outgoing = drsblobs.trustAuthInOutBlob()
 789         outgoing.count = 1
 790         outgoing.current = authentication_information_array
 791
 792         trustpass = drsblobs.trustDomainPasswords()
 793         confounder = [3] * 512
 794
 795         for i in range(512):
 796             confounder[i] = random.randint(0, 255)
 797
 798         trustpass.confounder = confounder
 799
 800         trustpass.outgoing = outgoing
 801         trustpass.incoming = outgoing
 802
 803         trustpass_blob = ndr_pack(trustpass)
 804
 805         encrypted_trustpass = arcfour_encrypt(lsaconn.session_key, trustpass_blob)
 806
 807         auth_blob = lsa.DATA_BUF2()
 808         auth_blob.size = len(encrypted_trustpass)
 809         auth_blob.data = string_to_array(encrypted_trustpass)
 810
 811         auth_info = lsa.TrustDomainInfoAuthInfoInternal()
 812         auth_info.auth_blob = auth_blob
 813
 814         trustdom_handle = lsaconn.CreateTrustedDomainEx2(pol_handle,
 815                                                          info,
 816                                                          auth_info,
 817                                                          security.SEC_STD_DELETE)
 818
 819         rec = {
 820             "dn" : "cn=%s,cn=system,%s" % (ctx.dnsforest, ctx.base_dn),
 821             "objectclass" : "trustedDomain",
 822             "trustType" : str(info.trust_type),
 823             "trustAttributes" : str(info.trust_attributes),
 824             "trustDirection" : str(info.trust_direction),
 825             "flatname" : ctx.forest_domain_name,
 826             "trustPartner" : ctx.dnsforest,
 827             "trustAuthIncoming" : ndr_pack(outgoing),
 828             "trustAuthOutgoing" : ndr_pack(outgoing)
 829             }
 830         ctx.local_samdb.add(rec)
 831
 832         rec = {
 833             "dn" : "cn=%s$,cn=users,%s" % (ctx.forest_domain_name, ctx.base_dn),
 834             "objectclass" : "user",
 835             "userAccountControl" : str(samba.dsdb.UF_INTERDOMAIN_TRUST_ACCOUNT),
 836             "clearTextPassword" : ctx.trustdom_pass.encode('utf-16-le')
 837             }
 838         ctx.local_samdb.add(rec)
 839
 840
 841     def do_join(ctx):
 842         ctx.cleanup_old_join()
 843         try:
 844             ctx.join_add_objects()
 845             ctx.join_provision()
 846             ctx.join_replicate()
 847             if ctx.subdomain:
 848                 ctx.join_add_objects2()
 849                 ctx.join_provision_own_domain()
 850                 ctx.join_setup_trusts()
 851             ctx.join_finalise()
 852         except Exception:
 853             print "Join failed - cleaning up"
 854             ctx.cleanup_old_join()
 855             raise
 856
 857
 858 def join_RODC(server=None, creds=None, lp=None, site=None, netbios_name=None,
 859               targetdir=None, domain=None, domain_critical_only=False):
 860     """join as a RODC"""
 861
 862     ctx = dc_join(server, creds, lp, site, netbios_name, targetdir, domain)
 863
 864     lp.set("workgroup", ctx.domain_name)
 865     print("workgroup is %s" % ctx.domain_name)
 866
 867     lp.set("realm", ctx.realm)
 868     print("realm is %s" % ctx.realm)
 869
 870     ctx.krbtgt_dn = "CN=krbtgt_%s,CN=Users,%s" % (ctx.myname, ctx.base_dn)
 871
 872     # setup some defaults for accounts that should be replicated to this RODC
 873     ctx.never_reveal_sid = [ "<SID=%s-%s>" % (ctx.domsid, security.DOMAIN_RID_RODC_DENY),
 874                              "<SID=%s>" % security.SID_BUILTIN_ADMINISTRATORS,
 875                              "<SID=%s>" % security.SID_BUILTIN_SERVER_OPERATORS,
 876                              "<SID=%s>" % security.SID_BUILTIN_BACKUP_OPERATORS,
 877                              "<SID=%s>" % security.SID_BUILTIN_ACCOUNT_OPERATORS ]
 878     ctx.reveal_sid = "<SID=%s-%s>" % (ctx.domsid, security.DOMAIN_RID_RODC_ALLOW)
 879
 880     mysid = ctx.get_mysid()
 881     admin_dn = "<SID=%s>" % mysid
 882     ctx.managedby = admin_dn
 883
 884     ctx.userAccountControl = (samba.dsdb.UF_WORKSTATION_TRUST_ACCOUNT |
 885                               samba.dsdb.UF_TRUSTED_TO_AUTHENTICATE_FOR_DELEGATION |
 886                               samba.dsdb.UF_PARTIAL_SECRETS_ACCOUNT)
 887
 888     ctx.SPNs.extend([ "RestrictedKrbHost/%s" % ctx.myname,
 889                       "RestrictedKrbHost/%s" % ctx.dnshostname ])
 890
 891     ctx.connection_dn = "CN=RODC Connection (FRS),%s" % ctx.ntds_dn
 892     ctx.secure_channel_type = misc.SEC_CHAN_RODC
 893     ctx.RODC = True
 894     ctx.replica_flags  =  (drsuapi.DRSUAPI_DRS_INIT_SYNC |
 895                            drsuapi.DRSUAPI_DRS_PER_SYNC |
 896                            drsuapi.DRSUAPI_DRS_GET_ANC |
 897                            drsuapi.DRSUAPI_DRS_NEVER_SYNCED |
 898                            drsuapi.DRSUAPI_DRS_SPECIAL_SECRET_PROCESSING |
 899                            drsuapi.DRSUAPI_DRS_GET_ALL_GROUP_MEMBERSHIP)
 900     ctx.domain_replica_flags = ctx.replica_flags
 901     if domain_critical_only:
 902         ctx.domain_replica_flags |= drsuapi.DRSUAPI_DRS_CRITICAL_ONLY
 903
 904     ctx.do_join()
 905
 906
 907     print "Joined domain %s (SID %s) as an RODC" % (ctx.domain_name, ctx.domsid)
 908
 909
 910 def join_DC(server=None, creds=None, lp=None, site=None, netbios_name=None,
 911             targetdir=None, domain=None, domain_critical_only=False):
 912     """join as a DC"""
 913     ctx = dc_join(server, creds, lp, site, netbios_name, targetdir, domain)
 914
 915     lp.set("workgroup", ctx.domain_name)
 916     print("workgroup is %s" % ctx.domain_name)
 917
 918     lp.set("realm", ctx.realm)
 919     print("realm is %s" % ctx.realm)
 920
 921     ctx.userAccountControl = samba.dsdb.UF_SERVER_TRUST_ACCOUNT | samba.dsdb.UF_TRUSTED_FOR_DELEGATION
 922
 923     ctx.SPNs.append('E3514235-4B06-11D1-AB04-00C04FC2DCD2/$NTDSGUID/%s' % ctx.dnsdomain)
 924     ctx.secure_channel_type = misc.SEC_CHAN_BDC
 925
 926     ctx.replica_flags = (drsuapi.DRSUAPI_DRS_WRIT_REP |
 927                          drsuapi.DRSUAPI_DRS_INIT_SYNC |
 928                          drsuapi.DRSUAPI_DRS_PER_SYNC |
 929                          drsuapi.DRSUAPI_DRS_FULL_SYNC_IN_PROGRESS |
 930                          drsuapi.DRSUAPI_DRS_NEVER_SYNCED)
 931     ctx.domain_replica_flags = ctx.replica_flags
 932     if domain_critical_only:
 933         ctx.domain_replica_flags |= drsuapi.DRSUAPI_DRS_CRITICAL_ONLY
 934
 935     ctx.do_join()
 936     print "Joined domain %s (SID %s) as a DC" % (ctx.domain_name, ctx.domsid)
 937
 938 def join_subdomain(server=None, creds=None, lp=None, site=None, netbios_name=None,
 939                    targetdir=None, parent_domain=None, dnsdomain=None, netbios_domain=None):
 940     """join as a DC"""
 941     ctx = dc_join(server, creds, lp, site, netbios_name, targetdir, parent_domain)
 942     ctx.subdomain = True
 943     ctx.parent_domain_name = ctx.domain_name
 944     ctx.domain_name = netbios_domain
 945     ctx.realm = dnsdomain
 946     ctx.parent_dnsdomain = ctx.dnsdomain
 947     ctx.parent_partition_dn = ctx.get_parent_partition_dn()
 948     ctx.dnsdomain = dnsdomain
 949     ctx.partition_dn = "CN=%s,CN=Partitions,%s" % (ctx.domain_name, ctx.config_dn)
 950     ctx.naming_master = ctx.get_naming_master()
 951     if ctx.naming_master != ctx.server:
 952         print("Reconnecting to naming master %s" % ctx.naming_master)
 953         ctx.server = ctx.naming_master
 954         ctx.samdb = SamDB(url="ldap://%s" % ctx.server,
 955                           session_info=system_session(),
 956                           credentials=ctx.creds, lp=ctx.lp)
 957
 958     ctx.base_dn = samba.dn_from_dns_name(dnsdomain)
 959     ctx.domsid = str(security.random_sid())
 960     ctx.acct_dn = None
 961     ctx.dnshostname = "%s.%s" % (ctx.myname, ctx.dnsdomain)
 962     ctx.trustdom_pass = samba.generate_random_password(128, 128)
 963
 964     ctx.userAccountControl = samba.dsdb.UF_SERVER_TRUST_ACCOUNT | samba.dsdb.UF_TRUSTED_FOR_DELEGATION
 965
 966     ctx.SPNs.append('E3514235-4B06-11D1-AB04-00C04FC2DCD2/$NTDSGUID/%s' % ctx.dnsdomain)
 967     ctx.secure_channel_type = misc.SEC_CHAN_BDC
 968
 969     ctx.replica_flags = (drsuapi.DRSUAPI_DRS_WRIT_REP |
 970                          drsuapi.DRSUAPI_DRS_INIT_SYNC |
 971                          drsuapi.DRSUAPI_DRS_PER_SYNC |
 972                          drsuapi.DRSUAPI_DRS_FULL_SYNC_IN_PROGRESS |
 973                          drsuapi.DRSUAPI_DRS_NEVER_SYNCED)
 974     ctx.domain_replica_flags = ctx.replica_flags
 975
 976     ctx.do_join()
 977     print "Created domain %s (SID %s) as a DC" % (ctx.domain_name, ctx.domsid)