text: #!/usr/bin/env python
  #
  # python join code
  # Copyright Andrew Tridgell 2010
  # Copyright Andrew Bartlett 2010
  #
  # This program is free software; you can redistribute it and/or modify
  # it under the terms of the GNU General Public License as published by
  # the Free Software Foundation; either version 3 of the License, or
  # (at your option) any later version.
  #
  # This program is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  # GNU General Public License for more details.
  #
  # You should have received a copy of the GNU General Public License
  # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  #
  
  """Joining a domain."""
  
  from samba.auth import system_session
  from samba.samdb import SamDB
  from samba import gensec, Ldb, drs_utils
  import ldb, samba, sys, os, uuid
  from samba.ndr import ndr_pack
  from samba.dcerpc import security, drsuapi, misc, nbt
  from samba.credentials import Credentials, DONT_USE_KERBEROS
  from samba.provision import secretsdb_self_join, provision, FILL_DRS
  from samba.schema import Schema
  from samba.net import Net
  import logging
  import talloc
  
  # this makes debugging easier
  talloc.enable_null_tracking()
  
  
  class dc_join(object):
      '''perform a DC join'''
  
      def __init__(ctx, server=None, creds=None, lp=None, site=None,
              netbios_name=None, targetdir=None, domain=None):
          ctx.creds = creds
          ctx.lp = lp
          ctx.site = site
          ctx.netbios_name = netbios_name
          ctx.targetdir = targetdir
  
          ctx.creds.set_gensec_features(creds.get_gensec_features() | gensec.FEATURE_SEAL)
          ctx.net = Net(creds=ctx.creds, lp=ctx.lp)
  
          if server is not None:
              ctx.server = server
          else:
              print("Finding a writeable DC for domain '%s'" % domain)
              ctx.server = ctx.find_dc(domain)
              print("Found DC %s" % ctx.server)
  
          ctx.samdb = SamDB(url="ldap://%s" % ctx.server,
                            session_info=system_session(),
                            credentials=ctx.creds, lp=ctx.lp)
  
          ctx.myname = netbios_name
          ctx.samname = "%s$" % ctx.myname
          ctx.base_dn = str(ctx.samdb.get_default_basedn())
          ctx.root_dn = str(ctx.samdb.get_root_basedn())
          ctx.schema_dn = str(ctx.samdb.get_schema_basedn())
          ctx.config_dn = str(ctx.samdb.get_config_basedn())
          ctx.domsid = ctx.samdb.get_domain_sid()
          ctx.domain_name = ctx.get_domain_name()
  
          lp.set("workgroup", ctx.domain_name)
          print("workgroup is %s" % ctx.domain_name)
  
          ctx.dc_ntds_dn = ctx.get_dsServiceName()
          ctx.dc_dnsHostName = ctx.get_dnsHostName()
          ctx.behavior_version = ctx.get_behavior_version()
  
          ctx.acct_pass = samba.generate_random_password(32, 40)
  
          # work out the DNs of all the objects we will be adding
          ctx.server_dn = "CN=%s,CN=Servers,CN=%s,CN=Sites,%s" % (ctx.myname, ctx.site, ctx.config_dn)
          ctx.ntds_dn = "CN=NTDS Settings,%s" % ctx.server_dn
          topology_base = "CN=Topology,CN=Domain System Volume,CN=DFSR-GlobalSettings,CN=System,%s" % ctx.base_dn
          if ctx.dn_exists(topology_base):
              ctx.topology_dn = "CN=%s,%s" % (ctx.myname, topology_base)
          else:
              ctx.topology_dn = None
  
          ctx.dnsdomain = ldb.Dn(ctx.samdb, ctx.base_dn).canonical_str().split('/')[0]
  
          ctx.realm = ctx.dnsdomain
          lp.set("realm", ctx.realm)
  
          print("realm is %s" % ctx.realm)
  
          ctx.dnshostname = "%s.%s" % (ctx.myname.lower(), ctx.dnsdomain)
  
          ctx.acct_dn = "CN=%s,OU=Domain Controllers,%s" % (ctx.myname, ctx.base_dn)
  
          ctx.tmp_samdb = None
  
          ctx.SPNs = [ "HOST/%s" % ctx.myname,
                       "HOST/%s" % ctx.dnshostname,
                       "GC/%s/%s" % (ctx.dnshostname, ctx.dnsdomain) ]
  
          # these elements are optional
          ctx.never_reveal_sid = None
          ctx.reveal_sid = None
          ctx.connection_dn = None
          ctx.RODC = False
          ctx.krbtgt_dn = None
          ctx.drsuapi = None
          ctx.managedby = None
  
  
      def del_noerror(ctx, dn, recursive=False):
          if recursive:
              try:
                  res = ctx.samdb.search(base=dn, scope=ldb.SCOPE_ONELEVEL, attrs=["dn"])
              except Exception:
                  return
              for r in res:
                  ctx.del_noerror(r.dn, recursive=True)
          try:
              ctx.samdb.delete(dn)
              print "Deleted %s" % dn
          except Exception:
              pass
  
      def cleanup_old_join(ctx):
          '''remove any DNs from a previous join'''
          try:
              # find the krbtgt link
              print("checking samaccountname")
              res = ctx.samdb.search(base=ctx.samdb.get_default_basedn(),
                                     expression='samAccountName=%s' % ctx.samname,
                                     attrs=["msDS-krbTgtLink"])
              if res:
                  ctx.del_noerror(res[0].dn, recursive=True)
              if ctx.connection_dn is not None:
                  ctx.del_noerror(ctx.connection_dn)
              if ctx.krbtgt_dn is not None:
                  ctx.del_noerror(ctx.krbtgt_dn)
              ctx.del_noerror(ctx.ntds_dn)
              ctx.del_noerror(ctx.server_dn, recursive=True)
              if ctx.topology_dn:
                  ctx.del_noerror(ctx.topology_dn)
              if res:
                  ctx.new_krbtgt_dn = res[0]["msDS-Krbtgtlink"][0]
                  ctx.del_noerror(ctx.new_krbtgt_dn)
          except Exception:
              pass
  
      def find_dc(ctx, domain):
          '''find a writeable DC for the given domain'''
          try:
              ctx.cldap_ret = ctx.net.finddc(domain, nbt.NBT_SERVER_LDAP | nbt.NBT_SERVER_DS | nbt.NBT_SERVER_WRITABLE)
          except Exception:
              raise Exception("Failed to find a writeable DC for domain '%s'" % domain)
          if ctx.cldap_ret.client_site is not None and ctx.cldap_ret.client_site != "":
              ctx.site = ctx.cldap_ret.client_site
          return ctx.cldap_ret.pdc_dns_name
  
  
      def get_dsServiceName(ctx):
          res = ctx.samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["dsServiceName"])
          return res[0]["dsServiceName"][0]
  
      def get_behavior_version(ctx):
          res = ctx.samdb.search(base=ctx.base_dn, scope=ldb.SCOPE_BASE, attrs=["msDS-Behavior-Version"])
          if "msDS-Behavior-Version" in res[0]:
              return int(res[0]["msDS-Behavior-Version"][0])
          else:
              return samba.dsdb.DS_DOMAIN_FUNCTION_2000
  
      def get_dnsHostName(ctx):
          res = ctx.samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["dnsHostName"])
          return res[0]["dnsHostName"][0]
  
      def get_domain_name(ctx):
          '''get netbios name of the domain from the partitions record'''
          partitions_dn = ctx.samdb.get_partitions_dn()
          res = ctx.samdb.search(base=partitions_dn, scope=ldb.SCOPE_ONELEVEL, attrs=["nETBIOSName"],
                                 expression='ncName=%s' % ctx.samdb.get_default_basedn())
          return res[0]["nETBIOSName"][0]
  
      def get_mysid(ctx):
          '''get the SID of the connected user. Only works with w2k8 and later,
             so only used for RODC join'''
          res = ctx.samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["tokenGroups"])
          binsid = res[0]["tokenGroups"][0]
          return ctx.samdb.schema_format_value("objectSID", binsid)
  
      def dn_exists(ctx, dn):
          '''check if a DN exists'''
          try:
              res = ctx.samdb.search(base=dn, scope=ldb.SCOPE_BASE, attrs=[])
          except ldb.LdbError, (enum, estr):
              if enum == ldb.ERR_NO_SUCH_OBJECT:
                  return False
              raise
          return True
  
      def add_krbtgt_account(ctx):
          '''RODCs need a special krbtgt account'''
          print "Adding %s" % ctx.krbtgt_dn
          rec = {
              "dn" : ctx.krbtgt_dn,
              "objectclass" : "user",
              "useraccountcontrol" : str(samba.dsdb.UF_NORMAL_ACCOUNT |
                                         samba.dsdb.UF_ACCOUNTDISABLE),
              "showinadvancedviewonly" : "TRUE",
              "description" : "krbtgt for %s" % ctx.samname}
          ctx.samdb.add(rec, ["rodc_join:1:1"])
  
          # now we need to search for the samAccountName attribute on the krbtgt DN,
          # as this will have been magically set to the krbtgt number
          res = ctx.samdb.search(base=ctx.krbtgt_dn, scope=ldb.SCOPE_BASE, attrs=["samAccountName"])
          ctx.krbtgt_name = res[0]["samAccountName"][0]
  
          print "Got krbtgt_name=%s" % ctx.krbtgt_name
  
          m = ldb.Message()
          m.dn = ldb.Dn(ctx.samdb, ctx.acct_dn)
          m["msDS-krbTgtLink"] = ldb.MessageElement(ctx.krbtgt_dn,
                                                    ldb.FLAG_MOD_REPLACE, "msDS-krbTgtLink")
          ctx.samdb.modify(m)
  
          ctx.new_krbtgt_dn = "CN=%s,CN=Users,%s" % (ctx.krbtgt_name, ctx.base_dn)
          print "Renaming %s to %s" % (ctx.krbtgt_dn, ctx.new_krbtgt_dn)
          ctx.samdb.rename(ctx.krbtgt_dn, ctx.new_krbtgt_dn)
  
      def drsuapi_connect(ctx):
          '''make a DRSUAPI connection to the server'''
          binding_options = "seal"
          if ctx.lp.get("log level") >= 5:
              binding_options += ",print"
          binding_string = "ncacn_ip_tcp:%s[%s]" % (ctx.server, binding_options)
          ctx.drsuapi = drsuapi.drsuapi(binding_string, ctx.lp, ctx.creds)
          (ctx.drsuapi_handle, ctx.bind_supported_extensions) = drs_utils.drs_DsBind(ctx.drsuapi)
  
      def create_tmp_samdb(ctx):
          '''create a temporary samdb object for schema queries'''
          ctx.tmp_schema = Schema(security.dom_sid(ctx.domsid),
                                  schemadn=ctx.schema_dn)
          ctx.tmp_samdb = SamDB(session_info=system_session(), url=None, auto_connect=False,
                                credentials=ctx.creds, lp=ctx.lp, global_schema=False,
                                am_rodc=False)
          ctx.tmp_samdb.set_schema(ctx.tmp_schema)
  
      def build_DsReplicaAttribute(ctx, attrname, attrvalue):
          '''build a DsReplicaAttributeCtr object'''
          r = drsuapi.DsReplicaAttribute()
          r.attid = ctx.tmp_samdb.get_attid_from_lDAPDisplayName(attrname)
          r.value_ctr = 1
  
  
      def DsAddEntry(ctx, rec):
          '''add a record via the DRSUAPI DsAddEntry call'''
          if ctx.drsuapi is None:
              ctx.drsuapi_connect()
          if ctx.tmp_samdb is None:
              ctx.create_tmp_samdb()
  
          id = drsuapi.DsReplicaObjectIdentifier()
          id.dn = rec['dn']
  
          attrs = []
          for a in rec:
              if a == 'dn':
                  continue
              if not isinstance(rec[a], list):
                  v = [rec[a]]
              else:
                  v = rec[a]
              rattr = ctx.tmp_samdb.dsdb_DsReplicaAttribute(ctx.tmp_samdb, a, v)
              attrs.append(rattr)
  
          attribute_ctr = drsuapi.DsReplicaAttributeCtr()
          attribute_ctr.num_attributes = len(attrs)
          attribute_ctr.attributes = attrs
  
          object = drsuapi.DsReplicaObject()
          object.identifier = id
          object.attribute_ctr = attribute_ctr
  
          first_object = drsuapi.DsReplicaObjectListItem()
          first_object.object = object
  
          req2 = drsuapi.DsAddEntryRequest2()
          req2.first_object = first_object
  
          (level, ctr) = ctx.drsuapi.DsAddEntry(ctx.drsuapi_handle, 2, req2)
          if ctr.err_ver != 1:
              raise RuntimeError("expected err_ver 1, got %u" % ctr.err_ver)
          if ctr.err_data.status != (0, 'WERR_OK'):
              print("DsAddEntry failed with status %s info %s" % (ctr.err_data.status,
                                                                  ctr.err_data.info.extended_err))
              raise RuntimeError("DsAddEntry failed")
  
      def join_add_objects(ctx):
          '''add the various objects needed for the join'''
          print "Adding %s" % ctx.acct_dn
          rec = {
              "dn" : ctx.acct_dn,
              "objectClass": "computer",
              "displayname": ctx.samname,
              "samaccountname" : ctx.samname,
              "userAccountControl" : str(ctx.userAccountControl | samba.dsdb.UF_ACCOUNTDISABLE),
              "dnshostname" : ctx.dnshostname}
          if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2008:
              rec['msDS-SupportedEncryptionTypes'] = str(samba.dsdb.ENC_ALL_TYPES)
          if ctx.managedby:
              rec["managedby"] = ctx.managedby
          if ctx.never_reveal_sid:
              rec["msDS-NeverRevealGroup"] = ctx.never_reveal_sid
          if ctx.reveal_sid:
              rec["msDS-RevealOnDemandGroup"] = ctx.reveal_sid
          ctx.samdb.add(rec)
  
          if ctx.krbtgt_dn:
              ctx.add_krbtgt_account()
  
          print "Adding %s" % ctx.server_dn
          rec = {
              "dn": ctx.server_dn,
              "objectclass" : "server",
              "systemFlags" : str(samba.dsdb.SYSTEM_FLAG_CONFIG_ALLOW_RENAME |
                                  samba.dsdb.SYSTEM_FLAG_CONFIG_ALLOW_LIMITED_MOVE |
                                  samba.dsdb.SYSTEM_FLAG_DISALLOW_MOVE_ON_DELETE),
              "serverReference" : ctx.acct_dn,
              "dnsHostName" : ctx.dnshostname}
          ctx.samdb.add(rec)
  
          # FIXME: the partition (NC) assignment has to be made dynamic
          print "Adding %s" % ctx.ntds_dn
          rec = {
              "dn" : ctx.ntds_dn,
              "objectclass" : "nTDSDSA",
              "systemFlags" : str(samba.dsdb.SYSTEM_FLAG_DISALLOW_MOVE_ON_DELETE),
              "dMDLocation" : ctx.schema_dn}
  
          if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
              rec["msDS-Behavior-Version"] = str(ctx.behavior_version)
  
          if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
              rec["msDS-HasDomainNCs"] = ctx.base_dn
  
          if ctx.RODC:
              rec["objectCategory"] = "CN=NTDS-DSA-RO,%s" % ctx.schema_dn
              rec["msDS-HasFullReplicaNCs"] = [ ctx.base_dn, ctx.config_dn, ctx.schema_dn ]
              rec["options"] = "37"
              ctx.samdb.add(rec, ["rodc_join:1:1"])
          else:
              rec["objectCategory"] = "CN=NTDS-DSA,%s" % ctx.schema_dn
              rec["HasMasterNCs"]      = [ ctx.base_dn, ctx.config_dn, ctx.schema_dn ]
              if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
                  rec["msDS-HasMasterNCs"] = [ ctx.base_dn, ctx.config_dn, ctx.schema_dn ]
              rec["options"] = "1"
              rec["invocationId"] = ndr_pack(misc.GUID(str(uuid.uuid4())))
              ctx.DsAddEntry(rec)
  
          # find the GUID of our NTDS DN
          res = ctx.samdb.search(base=ctx.ntds_dn, scope=ldb.SCOPE_BASE, attrs=["objectGUID"])
          ctx.ntds_guid = misc.GUID(ctx.samdb.schema_format_value("objectGUID", res[0]["objectGUID"][0]))
  
          if ctx.connection_dn is not None:
              print "Adding %s" % ctx.connection_dn
              rec = {
                  "dn" : ctx.connection_dn,
                  "objectclass" : "nTDSConnection",
                  "enabledconnection" : "TRUE",
                  "options" : "65",
                  "fromServer" : ctx.dc_ntds_dn}
              ctx.samdb.add(rec)
  
          if ctx.topology_dn:
              print "Adding %s" % ctx.topology_dn
              rec = {
                  "dn" : ctx.topology_dn,
                  "objectclass" : "msDFSR-Member",
                  "msDFSR-ComputerReference" : ctx.acct_dn,
                  "serverReference" : ctx.ntds_dn}
              ctx.samdb.add(rec)
  
          print "Adding SPNs to %s" % ctx.acct_dn
          m = ldb.Message()
          m.dn = ldb.Dn(ctx.samdb, ctx.acct_dn)
          for i in range(len(ctx.SPNs)):
              ctx.SPNs[i] = ctx.SPNs[i].replace("$NTDSGUID", str(ctx.ntds_guid))
          m["servicePrincipalName"] = ldb.MessageElement(ctx.SPNs,
                                                         ldb.FLAG_MOD_ADD,
                                                         "servicePrincipalName")
          ctx.samdb.modify(m)
  
          print "Setting account password for %s" % ctx.samname
          ctx.samdb.setpassword("(&(objectClass=user)(sAMAccountName=%s))" % ctx.samname,
                                ctx.acct_pass,
                                force_change_at_next_login=False,
                                username=ctx.samname)
          res = ctx.samdb.search(base=ctx.acct_dn, scope=ldb.SCOPE_BASE, attrs=["msDS-keyVersionNumber"])
          ctx.key_version_number = int(res[0]["msDS-keyVersionNumber"][0])
  
          print("Enabling account")
          m = ldb.Message()
          m.dn = ldb.Dn(ctx.samdb, ctx.acct_dn)
          m["userAccountControl"] = ldb.MessageElement(str(ctx.userAccountControl),
                                                       ldb.FLAG_MOD_REPLACE,
                                                       "userAccountControl")
          ctx.samdb.modify(m)
  
      def join_provision(ctx):
          '''provision the local SAM'''
  
          print "Calling bare provision"
  
          logger = logging.getLogger("provision")
          logger.addHandler(logging.StreamHandler(sys.stdout))
          smbconf = ctx.lp.configfile
  
          presult = provision(logger, system_session(), None,
                              smbconf=smbconf, targetdir=ctx.targetdir, samdb_fill=FILL_DRS,
                              realm=ctx.realm, rootdn=ctx.root_dn, domaindn=ctx.base_dn,
                              schemadn=ctx.schema_dn,
                              configdn=ctx.config_dn,
                              serverdn=ctx.server_dn, domain=ctx.domain_name,
                              hostname=ctx.myname, domainsid=ctx.domsid,
                              machinepass=ctx.acct_pass, serverrole="domain controller",
                              sitename=ctx.site, lp=ctx.lp)
          print "Provision OK for domain DN %s" % presult.domaindn
          ctx.local_samdb = presult.samdb
          ctx.lp          = presult.lp
          ctx.paths       = presult.paths
  
  
      def join_replicate(ctx):
          '''replicate the SAM'''
  
          print "Starting replication"
          ctx.local_samdb.transaction_start()
          try:
              source_dsa_invocation_id = misc.GUID(ctx.samdb.get_invocation_id())
              destination_dsa_guid = ctx.ntds_guid
  
              if ctx.RODC:
                  repl_creds = Credentials()
                  repl_creds.guess(ctx.lp)
                  repl_creds.set_kerberos_state(DONT_USE_KERBEROS)
                  repl_creds.set_username(ctx.samname)
                  repl_creds.set_password(ctx.acct_pass)
              else:
                  repl_creds = ctx.creds
  
              binding_options = "seal"
              if ctx.lp.get("debug level") >= 5:
                  binding_options += ",print"
              repl = drs_utils.drs_Replicate(
                  "ncacn_ip_tcp:%s[%s]" % (ctx.server, binding_options),
                  ctx.lp, repl_creds, ctx.local_samdb)
  
              repl.replicate(ctx.schema_dn, source_dsa_invocation_id,
                      destination_dsa_guid, schema=True, rodc=ctx.RODC,
                      replica_flags=ctx.replica_flags)
              repl.replicate(ctx.config_dn, source_dsa_invocation_id,
                      destination_dsa_guid, rodc=ctx.RODC,
                      replica_flags=ctx.replica_flags)
              repl.replicate(ctx.base_dn, source_dsa_invocation_id,
                      destination_dsa_guid, rodc=ctx.RODC,
                      replica_flags=ctx.replica_flags)
              if ctx.RODC:
                  repl.replicate(ctx.acct_dn, source_dsa_invocation_id,
                          destination_dsa_guid,
                          exop=drsuapi.DRSUAPI_EXOP_REPL_SECRET, rodc=True)
                  repl.replicate(ctx.new_krbtgt_dn, source_dsa_invocation_id,
                          destination_dsa_guid,
                          exop=drsuapi.DRSUAPI_EXOP_REPL_SECRET, rodc=True)
  
              print "Committing SAM database"
          except:
              ctx.local_samdb.transaction_cancel()
              raise
          else:
              ctx.local_samdb.transaction_commit()
  
  
      def join_finalise(ctx):
          '''finalise the join, mark us synchronised and setup secrets db'''
  
          print "Setting isSynchronized"
          m = ldb.Message()
          m.dn = ldb.Dn(ctx.samdb, '@ROOTDSE')
          m["isSynchronized"] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_REPLACE, "isSynchronized")
          ctx.samdb.modify(m)
  
          secrets_ldb = Ldb(ctx.paths.secrets, session_info=system_session(), lp=ctx.lp)
  
          print "Setting up secrets database"
          secretsdb_self_join(secrets_ldb, domain=ctx.domain_name,
                              realm=ctx.realm,
                              dnsdomain=ctx.dnsdomain,
                              netbiosname=ctx.myname,
                              domainsid=security.dom_sid(ctx.domsid),
                              machinepass=ctx.acct_pass,
                              secure_channel_type=ctx.secure_channel_type,
                              key_version_number=ctx.key_version_number)
  
      def do_join(ctx):
          ctx.cleanup_old_join()
          try:
              ctx.join_add_objects()
              ctx.join_provision()
              ctx.join_replicate()
              ctx.join_finalise()
          except Exception:
              print "Join failed - cleaning up"
              ctx.cleanup_old_join()
              raise
  
  
  def join_RODC(server=None, creds=None, lp=None, site=None, netbios_name=None,
                targetdir=None, domain=None):
      """join as a RODC"""
  
      ctx = dc_join(server, creds, lp, site, netbios_name, targetdir, domain)
  
      ctx.krbtgt_dn = "CN=krbtgt_%s,CN=Users,%s" % (ctx.myname, ctx.base_dn)
  
      # setup some defaults for accounts that should be replicated to this RODC
      ctx.never_reveal_sid = [ "<SID=%s-%s>" % (ctx.domsid, security.DOMAIN_RID_RODC_DENY),
                               "<SID=%s>" % security.SID_BUILTIN_ADMINISTRATORS,
                               "<SID=%s>" % security.SID_BUILTIN_SERVER_OPERATORS,
                               "<SID=%s>" % security.SID_BUILTIN_BACKUP_OPERATORS,
                               "<SID=%s>" % security.SID_BUILTIN_ACCOUNT_OPERATORS ]
      ctx.reveal_sid = "<SID=%s-%s>" % (ctx.domsid, security.DOMAIN_RID_RODC_ALLOW)
  
      mysid = ctx.get_mysid()
      admin_dn = "<SID=%s>" % mysid
      ctx.managedby = admin_dn
  
      ctx.userAccountControl = (samba.dsdb.UF_WORKSTATION_TRUST_ACCOUNT |
                                samba.dsdb.UF_TRUSTED_TO_AUTHENTICATE_FOR_DELEGATION |
                                samba.dsdb.UF_PARTIAL_SECRETS_ACCOUNT)
  
      ctx.SPNs.extend([ "RestrictedKrbHost/%s" % ctx.myname,
                        "RestrictedKrbHost/%s" % ctx.dnshostname ])
  
      ctx.connection_dn = "CN=RODC Connection (FRS),%s" % ctx.ntds_dn
      ctx.secure_channel_type = misc.SEC_CHAN_RODC
      ctx.RODC = True
      ctx.replica_flags  =  (drsuapi.DRSUAPI_DRS_INIT_SYNC |
                             drsuapi.DRSUAPI_DRS_PER_SYNC |
                             drsuapi.DRSUAPI_DRS_GET_ANC |
                             drsuapi.DRSUAPI_DRS_NEVER_SYNCED |
                             drsuapi.DRSUAPI_DRS_SPECIAL_SECRET_PROCESSING |
                             drsuapi.DRSUAPI_DRS_GET_ALL_GROUP_MEMBERSHIP)
      ctx.do_join()
  
  
      print "Joined domain %s (SID %s) as an RODC" % (ctx.domain_name, ctx.domsid)
  
  
  def join_DC(server=None, creds=None, lp=None, site=None, netbios_name=None,
              targetdir=None, domain=None):
      """join as a DC"""
      ctx = dc_join(server, creds, lp, site, netbios_name, targetdir, domain)
  
      ctx.userAccountControl = samba.dsdb.UF_SERVER_TRUST_ACCOUNT | samba.dsdb.UF_TRUSTED_FOR_DELEGATION
  
      ctx.SPNs.append('E3514235-4B06-11D1-AB04-00C04FC2DCD2/$NTDSGUID/%s' % ctx.dnsdomain)
      ctx.secure_channel_type = misc.SEC_CHAN_BDC
  
      ctx.replica_flags = (drsuapi.DRSUAPI_DRS_WRIT_REP |
                           drsuapi.DRSUAPI_DRS_INIT_SYNC |
                           drsuapi.DRSUAPI_DRS_PER_SYNC |
                           drsuapi.DRSUAPI_DRS_FULL_SYNC_IN_PROGRESS |
                           drsuapi.DRSUAPI_DRS_NEVER_SYNCED)
  
      ctx.do_join()
      print "Joined domain %s (SID %s) as a DC" % (ctx.domain_name, ctx.domsid)
  