# 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, uuid
from samba.ndr import ndr_pack
from samba.dcerpc import security, drsuapi, misc, nbt, lsa, drsblobs
from samba.credentials import Credentials, DONT_USE_KERBEROS
from samba.provision import secretsdb_self_join, provision, provision_fill, FILL_DRS, FILL_SUBDOMAIN
from samba.schema import Schema
from samba.net import Net
import logging
import talloc
import random
import time
# this makes debugging easier
talloc.enable_null_tracking()
class DCJoinException(Exception):
def __init__(self, msg):
super(DCJoinException, self).__init__("Can't join, error: %s" % msg)
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,
machinepass=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)
try:
ctx.samdb.search(scope=ldb.SCOPE_ONELEVEL, attrs=["dn"])
except ldb.LdbError, (enum, estr):
raise DCJoinException(estr)
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()
ctx.forest_domain_name = ctx.get_forest_domain_name()
ctx.invocation_id = misc.GUID(str(uuid.uuid4()))
ctx.dc_ntds_dn = ctx.samdb.get_dsServiceName()
ctx.dc_dnsHostName = ctx.get_dnsHostName()
ctx.behavior_version = ctx.get_behavior_version()
if machinepass is not None:
ctx.acct_pass = machinepass
else:
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 = ctx.samdb.domain_dns_name()
ctx.dnsforest = ctx.samdb.forest_dns_name()
ctx.dnshostname = "%s.%s" % (ctx.myname, ctx.dnsdomain)
ctx.realm = 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.dnsforest) ]
# 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
ctx.subdomain = False
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")
if ctx.subdomain:
res = None
else:
res = ctx.samdb.search(base=ctx.samdb.get_default_basedn(),
expression='sAMAccountName=%s' % ldb.binary_encode(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 ctx.partition_dn:
ctx.del_noerror(ctx.partition_dn)
if res:
ctx.new_krbtgt_dn = res[0]["msDS-Krbtgtlink"][0]
ctx.del_noerror(ctx.new_krbtgt_dn)
if ctx.subdomain:
binding_options = "sign"
lsaconn = lsa.lsarpc("ncacn_ip_tcp:%s[%s]" % (ctx.server, binding_options),
ctx.lp, ctx.creds)
objectAttr = lsa.ObjectAttribute()
objectAttr.sec_qos = lsa.QosInfo()
pol_handle = lsaconn.OpenPolicy2(''.decode('utf-8'),
objectAttr, security.SEC_FLAG_MAXIMUM_ALLOWED)
name = lsa.String()
name.string = ctx.realm
info = lsaconn.QueryTrustedDomainInfoByName(pol_handle, name, lsa.LSA_TRUSTED_DOMAIN_INFO_FULL_INFO)
lsaconn.DeleteTrustedDomain(pol_handle, info.info_ex.sid)
name = lsa.String()
name.string = ctx.forest_domain_name
info = lsaconn.QueryTrustedDomainInfoByName(pol_handle, name, lsa.LSA_TRUSTED_DOMAIN_INFO_FULL_INFO)
lsaconn.DeleteTrustedDomain(pol_handle, info.info_ex.sid)
except Exception:
pass
def find_dc(ctx, domain):
'''find a writeable DC for the given domain'''
try:
ctx.cldap_ret = ctx.net.finddc(domain=domain, flags=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_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_forest_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_root_basedn())
return res[0]["nETBIOSName"][0]
def get_parent_partition_dn(ctx):
'''get the parent domain partition DN from parent DNS name'''
res = ctx.samdb.search(base=ctx.config_dn, attrs=[],
expression='(&(objectclass=crossRef)(dnsRoot=%s)(systemFlags:%s:=%u))' %
(ctx.parent_dnsdomain, ldb.OID_COMPARATOR_AND, samba.dsdb.SYSTEM_FLAG_CR_NTDS_DOMAIN))
return str(res[0].dn)
def get_naming_master(ctx):
'''get the parent domain partition DN from parent DNS name'''
res = ctx.samdb.search(base='CN=Partitions,%s' % ctx.config_dn, attrs=['fSMORoleOwner'],
scope=ldb.SCOPE_BASE, controls=["extended_dn:1:1"])
if not 'fSMORoleOwner' in res[0]:
raise DCJoinException("Can't find naming master on partition DN %s" % ctx.partition_dn)
master_guid = str(misc.GUID(ldb.Dn(ctx.samdb, res[0]['fSMORoleOwner'][0]).get_extended_component('GUID')))
master_host = '%s._msdcs.%s' % (master_guid, ctx.dnsforest)
return master_host
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 naming master'''
binding_options = "seal"
if int(ctx.lp.get("log level")) >= 4:
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, recs):
'''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()
objects = []
for rec in recs:
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
list_object = drsuapi.DsReplicaObjectListItem()
list_object.object = object
objects.append(list_object)
req2 = drsuapi.DsAddEntryRequest2()
req2.first_object = objects[0]
prev = req2.first_object
for o in objects[1:]:
prev.next_object = o
prev = o
(level, ctr) = ctx.drsuapi.DsAddEntry(ctx.drsuapi_handle, 2, req2)
if level == 2:
if ctr.dir_err != drsuapi.DRSUAPI_DIRERR_OK:
print("DsAddEntry failed with dir_err %u" % ctr.dir_err)
raise RuntimeError("DsAddEntry failed")
if ctr.extended_err != (0, 'WERR_OK'):
print("DsAddEntry failed with status %s info %s" % (ctr.extended_err))
raise RuntimeError("DsAddEntry failed")
if level == 3:
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")
if ctr.err_data.dir_err != drsuapi.DRSUAPI_DIRERR_OK:
print("DsAddEntry failed with dir_err %u" % ctr.err_data.dir_err)
raise RuntimeError("DsAddEntry failed")
return ctr.objects
def join_add_ntdsdsa(ctx):
'''add the ntdsdsa object'''
# 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}
nc_list = [ ctx.base_dn, ctx.config_dn, ctx.schema_dn ]
if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
rec["msDS-Behavior-Version"] = str(samba.dsdb.DS_DOMAIN_FUNCTION_2008_R2)
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"] = nc_list
rec["options"] = "37"
ctx.samdb.add(rec, ["rodc_join:1:1"])
else:
rec["objectCategory"] = "CN=NTDS-DSA,%s" % ctx.schema_dn
rec["HasMasterNCs"] = nc_list
if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
rec["msDS-HasMasterNCs"] = nc_list
rec["options"] = "1"
rec["invocationId"] = ndr_pack(ctx.invocation_id)
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]))
def join_add_objects(ctx):
'''add the various objects needed for the join'''
if ctx.acct_dn:
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",
# windows uses 50000000 decimal for systemFlags. A windows hex/decimal mixup bug?
"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),
# windows seems to add the dnsHostName later
"dnsHostName" : ctx.dnshostname}
if ctx.acct_dn:
rec["serverReference"] = ctx.acct_dn
ctx.samdb.add(rec)
if ctx.subdomain:
# the rest is done after replication
ctx.ntds_guid = None
return
ctx.join_add_ntdsdsa()
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.acct_dn:
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)
# The account password set operation should normally be done over
# LDAP. Windows 2000 DCs however allow this only with SSL
# connections which are hard to set up and otherwise refuse with
# ERR_UNWILLING_TO_PERFORM. In this case we fall back to libnet
# over SAMR.
print "Setting account password for %s" % ctx.samname
try:
ctx.samdb.setpassword("(&(objectClass=user)(sAMAccountName=%s))"
% ldb.binary_encode(ctx.samname),
ctx.acct_pass,
force_change_at_next_login=False,
username=ctx.samname)
except ldb.LdbError, (num, _):
if num != ldb.ERR_UNWILLING_TO_PERFORM:
pass
ctx.net.set_password(account_name=ctx.samname,
domain_name=ctx.domain_name,
newpassword=ctx.acct_pass)
res = ctx.samdb.search(base=ctx.acct_dn, scope=ldb.SCOPE_BASE,
attrs=["msDS-KeyVersionNumber"])
if "msDS-KeyVersionNumber" in res[0]:
ctx.key_version_number = int(res[0]["msDS-KeyVersionNumber"][0])
else:
ctx.key_version_number = None
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_add_objects2(ctx):
'''add the various objects needed for the join, for subdomains post replication'''
print "Adding %s" % ctx.partition_dn
# NOTE: windows sends a ntSecurityDescriptor here, we
# let it default
rec = {
"dn" : ctx.partition_dn,
"objectclass" : "crossRef",
"objectCategory" : "CN=Cross-Ref,%s" % ctx.schema_dn,
"nCName" : ctx.base_dn,
"nETBIOSName" : ctx.domain_name,
"dnsRoot": ctx.dnsdomain,
"trustParent" : ctx.parent_partition_dn,
"systemFlags" : str(samba.dsdb.SYSTEM_FLAG_CR_NTDS_NC|samba.dsdb.SYSTEM_FLAG_CR_NTDS_DOMAIN)}
if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
rec["msDS-Behavior-Version"] = str(ctx.behavior_version)
rec2 = {
"dn" : ctx.ntds_dn,
"objectclass" : "nTDSDSA",
"systemFlags" : str(samba.dsdb.SYSTEM_FLAG_DISALLOW_MOVE_ON_DELETE),
"dMDLocation" : ctx.schema_dn}
nc_list = [ ctx.base_dn, ctx.config_dn, ctx.schema_dn ]
if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
rec2["msDS-Behavior-Version"] = str(ctx.behavior_version)
if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
rec2["msDS-HasDomainNCs"] = ctx.base_dn
rec2["objectCategory"] = "CN=NTDS-DSA,%s" % ctx.schema_dn
rec2["HasMasterNCs"] = nc_list
if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
rec2["msDS-HasMasterNCs"] = nc_list
rec2["options"] = "1"
rec2["invocationId"] = ndr_pack(ctx.invocation_id)
objects = ctx.DsAddEntry([rec, rec2])
if len(objects) != 2:
raise DCJoinException("Expected 2 objects from DsAddEntry")
ctx.ntds_guid = objects[1].guid
print("Replicating partition DN")
ctx.repl.replicate(ctx.partition_dn,
misc.GUID("00000000-0000-0000-0000-000000000000"),
ctx.ntds_guid,
exop=drsuapi.DRSUAPI_EXOP_REPL_OBJ,
replica_flags=drsuapi.DRSUAPI_DRS_WRIT_REP)
print("Replicating NTDS DN")
ctx.repl.replicate(ctx.ntds_dn,
misc.GUID("00000000-0000-0000-0000-000000000000"),
ctx.ntds_guid,
exop=drsuapi.DRSUAPI_EXOP_REPL_OBJ,
replica_flags=drsuapi.DRSUAPI_DRS_WRIT_REP)
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, ntdsguid=ctx.ntds_guid,
dns_backend="NONE")
print "Provision OK for domain DN %s" % presult.domaindn
ctx.local_samdb = presult.samdb
ctx.lp = presult.lp
ctx.paths = presult.paths
ctx.names = presult.names
def join_provision_own_domain(ctx):
'''provision the local SAM'''
# we now operate exclusively on the local database, which
# we need to reopen in order to get the newly created schema
print("Reconnecting to local samdb")
ctx.samdb = SamDB(url=ctx.local_samdb.url,
session_info=system_session(),
lp=ctx.local_samdb.lp,
global_schema=False)
ctx.samdb.set_invocation_id(str(ctx.invocation_id))
ctx.local_samdb = ctx.samdb
print("Finding domain GUID from ncName")
res = ctx.local_samdb.search(base=ctx.partition_dn, scope=ldb.SCOPE_BASE, attrs=['ncName'],
controls=["extended_dn:1:1"])
domguid = str(misc.GUID(ldb.Dn(ctx.samdb, res[0]['ncName'][0]).get_extended_component('GUID')))
print("Got domain GUID %s" % domguid)
print("Calling own domain provision")
logger = logging.getLogger("provision")
logger.addHandler(logging.StreamHandler(sys.stdout))
secrets_ldb = Ldb(ctx.paths.secrets, session_info=system_session(), lp=ctx.lp)
presult = provision_fill(ctx.local_samdb, secrets_ldb,
logger, ctx.names, ctx.paths, domainsid=security.dom_sid(ctx.domsid),
domainguid=domguid,
targetdir=ctx.targetdir, samdb_fill=FILL_SUBDOMAIN,
machinepass=ctx.acct_pass, serverrole="domain controller",
lp=ctx.lp, hostip=ctx.names.hostip, hostip6=ctx.names.hostip6,
dns_backend="BIND9_DLZ")
print("Provision OK for domain %s" % ctx.names.dnsdomain)
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())
if ctx.ntds_guid is None:
print("Using DS_BIND_GUID_W2K3")
destination_dsa_guid = misc.GUID(drsuapi.DRSUAPI_DS_BIND_GUID_W2K3)
else:
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 int(ctx.lp.get("log 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)
if not ctx.subdomain:
# Replicate first the critical object for the basedn
if not ctx.domain_replica_flags & drsuapi.DRSUAPI_DRS_CRITICAL_ONLY:
print "Replicating critical objects from the base DN of the domain"
ctx.domain_replica_flags |= drsuapi.DRSUAPI_DRS_CRITICAL_ONLY | drsuapi.DRSUAPI_DRS_GET_ANC
repl.replicate(ctx.base_dn, source_dsa_invocation_id,
destination_dsa_guid, rodc=ctx.RODC,
replica_flags=ctx.domain_replica_flags)
ctx.domain_replica_flags ^= drsuapi.DRSUAPI_DRS_CRITICAL_ONLY | drsuapi.DRSUAPI_DRS_GET_ANC
else:
ctx.domain_replica_flags |= drsuapi.DRSUAPI_DRS_GET_ANC
repl.replicate(ctx.base_dn, source_dsa_invocation_id,
destination_dsa_guid, rodc=ctx.RODC,
replica_flags=ctx.domain_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)
ctx.repl = repl
ctx.source_dsa_invocation_id = source_dsa_invocation_id
ctx.destination_dsa_guid = destination_dsa_guid
print "Committing SAM database"
except:
ctx.local_samdb.transaction_cancel()
raise
else:
ctx.local_samdb.transaction_commit()
def send_DsReplicaUpdateRefs(ctx, dn):
r = drsuapi.DsReplicaUpdateRefsRequest1()
r.naming_context = drsuapi.DsReplicaObjectIdentifier()
r.naming_context.dn = str(dn)
r.naming_context.guid = misc.GUID("00000000-0000-0000-0000-000000000000")
r.naming_context.sid = security.dom_sid("S-0-0")
r.dest_dsa_guid = ctx.ntds_guid
r.dest_dsa_dns_name = "%s._msdcs.%s" % (str(ctx.ntds_guid), ctx.dnsforest)
r.options = drsuapi.DRSUAPI_DRS_ADD_REF | drsuapi.DRSUAPI_DRS_DEL_REF
if not ctx.RODC:
r.options |= drsuapi.DRSUAPI_DRS_WRIT_REP
if ctx.drsuapi:
ctx.drsuapi.DsReplicaUpdateRefs(ctx.drsuapi_handle, 1, r)
def join_finalise(ctx):
'''finalise the join, mark us synchronised and setup secrets db'''
print "Sending DsReplicateUpdateRefs for all the partitions"
ctx.send_DsReplicaUpdateRefs(ctx.schema_dn)
ctx.send_DsReplicaUpdateRefs(ctx.config_dn)
ctx.send_DsReplicaUpdateRefs(ctx.base_dn)
print "Setting isSynchronized and dsServiceName"
m = ldb.Message()
m.dn = ldb.Dn(ctx.local_samdb, '@ROOTDSE')
m["isSynchronized"] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_REPLACE, "isSynchronized")
m["dsServiceName"] = ldb.MessageElement("<GUID=%s>" % str(ctx.ntds_guid),
ldb.FLAG_MOD_REPLACE, "dsServiceName")
ctx.local_samdb.modify(m)
if ctx.subdomain:
return
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 join_setup_trusts(ctx):
'''provision the local SAM'''
def arcfour_encrypt(key, data):
from Crypto.Cipher import ARC4
c = ARC4.new(key)
return c.encrypt(data)
def string_to_array(string):
blob = [0] * len(string)
for i in range(len(string)):
blob[i] = ord(string[i])
return blob
print "Setup domain trusts with server %s" % ctx.server
binding_options = "" # why doesn't signing work here? w2k8r2 claims no session key
lsaconn = lsa.lsarpc("ncacn_np:%s[%s]" % (ctx.server, binding_options),
ctx.lp, ctx.creds)
objectAttr = lsa.ObjectAttribute()
objectAttr.sec_qos = lsa.QosInfo()
pol_handle = lsaconn.OpenPolicy2(''.decode('utf-8'),
objectAttr, security.SEC_FLAG_MAXIMUM_ALLOWED)
info = lsa.TrustDomainInfoInfoEx()
info.domain_name.string = ctx.dnsdomain
info.netbios_name.string = ctx.domain_name
info.sid = security.dom_sid(ctx.domsid)
info.trust_direction = lsa.LSA_TRUST_DIRECTION_INBOUND | lsa.LSA_TRUST_DIRECTION_OUTBOUND
info.trust_type = lsa.LSA_TRUST_TYPE_UPLEVEL
info.trust_attributes = lsa.LSA_TRUST_ATTRIBUTE_WITHIN_FOREST
try:
oldname = lsa.String()
oldname.string = ctx.dnsdomain
oldinfo = lsaconn.QueryTrustedDomainInfoByName(pol_handle, oldname,
lsa.LSA_TRUSTED_DOMAIN_INFO_FULL_INFO)
print("Removing old trust record for %s (SID %s)" % (ctx.dnsdomain, oldinfo.info_ex.sid))
lsaconn.DeleteTrustedDomain(pol_handle, oldinfo.info_ex.sid)
except RuntimeError:
pass
password_blob = string_to_array(ctx.trustdom_pass.encode('utf-16-le'))
clear_value = drsblobs.AuthInfoClear()
clear_value.size = len(password_blob)
clear_value.password = password_blob
clear_authentication_information = drsblobs.AuthenticationInformation()
clear_authentication_information.LastUpdateTime = samba.unix2nttime(int(time.time()))
clear_authentication_information.AuthType = lsa.TRUST_AUTH_TYPE_CLEAR
clear_authentication_information.AuthInfo = clear_value
authentication_information_array = drsblobs.AuthenticationInformationArray()
authentication_information_array.count = 1
authentication_information_array.array = [clear_authentication_information]
outgoing = drsblobs.trustAuthInOutBlob()
outgoing.count = 1
outgoing.current = authentication_information_array
trustpass = drsblobs.trustDomainPasswords()
confounder = [3] * 512
for i in range(512):
confounder[i] = random.randint(0, 255)
trustpass.confounder = confounder
trustpass.outgoing = outgoing
trustpass.incoming = outgoing
trustpass_blob = ndr_pack(trustpass)
encrypted_trustpass = arcfour_encrypt(lsaconn.session_key, trustpass_blob)
auth_blob = lsa.DATA_BUF2()
auth_blob.size = len(encrypted_trustpass)
auth_blob.data = string_to_array(encrypted_trustpass)
auth_info = lsa.TrustDomainInfoAuthInfoInternal()
auth_info.auth_blob = auth_blob
trustdom_handle = lsaconn.CreateTrustedDomainEx2(pol_handle,
info,
auth_info,
security.SEC_STD_DELETE)
rec = {
"dn" : "cn=%s,cn=system,%s" % (ctx.dnsforest, ctx.base_dn),
"objectclass" : "trustedDomain",
"trustType" : str(info.trust_type),
"trustAttributes" : str(info.trust_attributes),
"trustDirection" : str(info.trust_direction),
"flatname" : ctx.forest_domain_name,
"trustPartner" : ctx.dnsforest,
"trustAuthIncoming" : ndr_pack(outgoing),
"trustAuthOutgoing" : ndr_pack(outgoing)
}
ctx.local_samdb.add(rec)
rec = {
"dn" : "cn=%s$,cn=users,%s" % (ctx.forest_domain_name, ctx.base_dn),
"objectclass" : "user",
"userAccountControl" : str(samba.dsdb.UF_INTERDOMAIN_TRUST_ACCOUNT),
"clearTextPassword" : ctx.trustdom_pass.encode('utf-16-le')
}
ctx.local_samdb.add(rec)
def do_join(ctx):
ctx.cleanup_old_join()
try:
ctx.join_add_objects()
ctx.join_provision()
ctx.join_replicate()
if ctx.subdomain:
ctx.join_add_objects2()
ctx.join_provision_own_domain()
ctx.join_setup_trusts()
ctx.join_finalise()
except:
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, domain_critical_only=False,
machinepass=None):
"""join as a RODC"""
ctx = dc_join(server, creds, lp, site, netbios_name, targetdir, domain,
machinepass)
lp.set("workgroup", ctx.domain_name)
print("workgroup is %s" % ctx.domain_name)
lp.set("realm", ctx.realm)
print("realm is %s" % ctx.realm)
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.domain_replica_flags = ctx.replica_flags
if domain_critical_only:
ctx.domain_replica_flags |= drsuapi.DRSUAPI_DRS_CRITICAL_ONLY
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, domain_critical_only=False,
machinepass=None):
"""join as a DC"""
ctx = dc_join(server, creds, lp, site, netbios_name, targetdir, domain,
machinepass)
lp.set("workgroup", ctx.domain_name)
print("workgroup is %s" % ctx.domain_name)
lp.set("realm", ctx.realm)
print("realm is %s" % ctx.realm)
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.domain_replica_flags = ctx.replica_flags
if domain_critical_only:
ctx.domain_replica_flags |= drsuapi.DRSUAPI_DRS_CRITICAL_ONLY
ctx.do_join()
print "Joined domain %s (SID %s) as a DC" % (ctx.domain_name, ctx.domsid)
def join_subdomain(server=None, creds=None, lp=None, site=None, netbios_name=None,
targetdir=None, parent_domain=None, dnsdomain=None, netbios_domain=None,
machinepass=None):
"""join as a DC"""
ctx = dc_join(server, creds, lp, site, netbios_name, targetdir, parent_domain,
machinepass)
ctx.subdomain = True
ctx.parent_domain_name = ctx.domain_name
ctx.domain_name = netbios_domain
ctx.realm = dnsdomain
ctx.parent_dnsdomain = ctx.dnsdomain
ctx.parent_partition_dn = ctx.get_parent_partition_dn()
ctx.dnsdomain = dnsdomain
ctx.partition_dn = "CN=%s,CN=Partitions,%s" % (ctx.domain_name, ctx.config_dn)
ctx.naming_master = ctx.get_naming_master()
if ctx.naming_master != ctx.server:
print("Reconnecting to naming master %s" % ctx.naming_master)
ctx.server = ctx.naming_master
ctx.samdb = SamDB(url="ldap://%s" % ctx.server,
session_info=system_session(),
credentials=ctx.creds, lp=ctx.lp)
ctx.base_dn = samba.dn_from_dns_name(dnsdomain)
ctx.domsid = str(security.random_sid())
ctx.acct_dn = None
ctx.dnshostname = "%s.%s" % (ctx.myname, ctx.dnsdomain)
ctx.trustdom_pass = samba.generate_random_password(128, 128)
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.domain_replica_flags = ctx.replica_flags
ctx.do_join()
print "Created domain %s (SID %s) as a DC" % (ctx.domain_name, ctx.domsid)