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#!/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/>.
#
import samba.getopt as options
from samba.auth import system_session
from samba.samdb import SamDB
from samba import gensec
import ldb, samba
from samba.ndr import ndr_pack, ndr_unpack, ndr_print
from samba.dcerpc import security
from samba.dcerpc import drsuapi, misc, netlogon
from samba.credentials import Credentials, DONT_USE_KERBEROS
from samba.provision import secretsdb_self_join
def join_rodc(server=None, creds=None, lp=None, site=None, netbios_name=None):
"""join as a RODC"""
if server is None:
raise Exception("You must supply a server for a RODC join")
def del_noerror(samdb, dn):
try:
samdb.delete(dn)
print "Deleted %s" % dn
except:
pass
def cleanup_old_join(samdb, acct_dn, server_dn, ntds_dn,
krbtgt_dn, connection_dn, topology_dn):
try:
# find the krbtgt link
res = samdb.search(base=acct_dn, scope=ldb.SCOPE_BASE, attrs=["msDS-krbTgtLink"])
del_noerror(samdb, acct_dn)
del_noerror(samdb, connection_dn)
del_noerror(samdb, krbtgt_dn)
del_noerror(samdb, ntds_dn)
del_noerror(samdb, server_dn)
del_noerror(samdb, topology_dn)
new_krbtgt_dn = res[0]["msDS-Krbtgtlink"][0]
del_noerror(samdb, new_krbtgt_dn)
except:
pass
def get_dsServiceName(samdb):
res = samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["dsServiceName"])
return res[0]["dsServiceName"][0]
def get_dnsHostName(samdb):
res = samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["dnsHostName"])
return res[0]["dnsHostName"][0]
def get_mysid(samdb):
res = samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["tokenGroups"])
binsid = res[0]["tokenGroups"][0]
return samdb.schema_format_value("objectSID", binsid)
def do_DsBind(drs):
'''make a DsBind call, returning the binding handle'''
bind_info = drsuapi.DsBindInfoCtr()
bind_info.length = 28
bind_info.info = drsuapi.DsBindInfo28()
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_BASE;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ASYNC_REPLICATION;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_REMOVEAPI;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_MOVEREQ_V2;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHG_COMPRESS;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V1;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_RESTORE_USN_OPTIMIZATION;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_KCC_EXECUTE;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADDENTRY_V2;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_LINKED_VALUE_REPLICATION;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V2;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_INSTANCE_TYPE_NOT_REQ_ON_MOD;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_CRYPTO_BIND;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GET_REPL_INFO;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_STRONG_ENCRYPTION;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V01;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_TRANSITIVE_MEMBERSHIP;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADD_SID_HISTORY;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_POST_BETA3;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GET_MEMBERSHIPS2;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V6;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_NONDOMAIN_NCS;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V8;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V5;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V6;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADDENTRYREPLY_V3;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V7;
bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_VERIFY_OBJECT;
(info, handle) = drs.DsBind(misc.GUID(drsuapi.DRSUAPI_DS_BIND_GUID), bind_info)
return handle
creds.set_gensec_features(creds.get_gensec_features() | gensec.FEATURE_SEAL)
samdb = SamDB(url="ldap://%s" % server,
session_info=system_session(),
credentials=creds, lp=lp)
myname = netbios_name
samname = "%s$" % myname
base_dn = str(samdb.get_default_basedn())
domsid = samdb.get_domain_sid()
dc_ntds_dn = get_dsServiceName(samdb)
dc_dnsHostName = get_dnsHostName(samdb)
acct_pass = samba.generate_random_password(12, 32)
mysid = get_mysid(samdb)
# work out the DNs of all the objects we will be adding
admin_dn = "<SID=%s>" % mysid
krbtgt_dn = "CN=krbtgt_%s,CN=Users,%s" % (myname, base_dn)
server_dn = "CN=%s,CN=Servers,CN=%s,CN=Sites,%s" % (myname, site, samdb.get_config_basedn())
ntds_dn = "CN=NTDS Settings,%s" % server_dn
connection_dn = "CN=RODC Connection (FRS),%s" % ntds_dn
topology_dn = "CN=%s,CN=Topology,CN=Domain System Volume,CN=DFSR-GlobalSettings,CN=System,%s" % (myname, base_dn)
never_reveal_sid = "%s-572" % domsid;
reveal_sid = "%s-571" % domsid;
dnsdomain = ldb.Dn(samdb, base_dn).canonical_str().split('/')[0]
dnshostname = "%s.%s" % (myname, dnsdomain)
acct_dn = "CN=%s,OU=Domain Controllers,%s" % (myname, base_dn)
cleanup_old_join(samdb, acct_dn, server_dn, ntds_dn,
krbtgt_dn, connection_dn, topology_dn)
print "Adding %s" % acct_dn
rec = {
"dn" : acct_dn,
"objectClass": "computer",
"displayname": samname,
"samaccountname" : samname,
"useraccountcontrol" : "83890176",
"managedby" : admin_dn,
"dnshostname" : dnshostname,
"msDS-NeverRevealGroup" : "<SID=%s>" % never_reveal_sid,
"msDS-RevealOnDemandGroup" : "<SID=%s>" % reveal_sid}
samdb.add(rec)
print "Adding %s" % krbtgt_dn
rec = {
"dn" : krbtgt_dn,
"objectclass" : "user",
"useraccountcontrol" : "514",
"showinadvancedviewonly" : "TRUE",
"description" : "tricky account"}
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 = samdb.search(base=krbtgt_dn, scope=ldb.SCOPE_BASE, attrs=["samAccountName"])
krbtgt_name = res[0]["samAccountName"][0]
print "Got krbtgt_name=%s" % krbtgt_name
m = ldb.Message()
m.dn = ldb.Dn(samdb, acct_dn)
m["msDS-krbTgtLink"] = ldb.MessageElement(krbtgt_dn,
ldb.FLAG_MOD_REPLACE, "msDS-krbTgtLink")
samdb.modify(m)
new_krbtgt_dn = "CN=%s,CN=Users,%s" % (krbtgt_name, base_dn)
print "Renaming %s to %s" % (krbtgt_dn, new_krbtgt_dn)
samdb.rename(krbtgt_dn, new_krbtgt_dn)
print "Adding %s" % server_dn
rec = {
"dn": server_dn,
"objectclass" : "server",
"systemFlags" : "1375731712",
"serverReference" : acct_dn,
"dnsHostName" : dnshostname}
samdb.add(rec)
print "Adding %s" % ntds_dn
rec = {
"dn" : ntds_dn,
"objectclass" : "nTDSDSA",
"objectCategory" : "CN=NTDS-DSA-RO,%s" % samdb.get_schema_basedn(),
"systemFlags" : "33554432",
"dMDLocation" : str(samdb.get_schema_basedn()),
"options" : "37",
"msDS-Behavior-Version" : "4",
"msDS-HasDomainNCs" : str(samdb.get_default_basedn()),
"msDS-HasFullReplicaNCs" : [ str(samdb.get_default_basedn()),
str(samdb.get_config_basedn()),
str(samdb.get_schema_basedn()) ]}
samdb.add(rec, ["rodc_join:1:1"])
print "Adding %s" % connection_dn
rec = {
"dn" : connection_dn,
"objectclass" : "nTDSConnection",
"enabledconnection" : "TRUE",
"options" : "65",
"fromServer" : dc_ntds_dn}
samdb.add(rec)
print "Adding %s" % topology_dn
rec = {
"dn" : topology_dn,
"objectclass" : "msDFSR-Member",
"msDFSR-ComputerReference" : acct_dn,
"serverReference" : ntds_dn}
samdb.add(rec)
print "Adding HOST SPNs to %s" % acct_dn
m = ldb.Message()
m.dn = ldb.Dn(samdb, acct_dn)
SPNs = [ "HOST/%s" % myname,
"HOST/%s" % dnshostname ]
m["servicePrincipalName"] = ldb.MessageElement(SPNs,
ldb.FLAG_MOD_ADD,
"servicePrincipalName")
samdb.modify(m)
print "Adding RestrictedKrbHost SPNs to %s" % acct_dn
m = ldb.Message()
m.dn = ldb.Dn(samdb, acct_dn)
SPNs = [ "RestrictedKrbHost/%s" % myname,
"RestrictedKrbHost/%s" % dnshostname ]
m["servicePrincipalName"] = ldb.MessageElement(SPNs,
ldb.FLAG_MOD_ADD,
"servicePrincipalName")
samdb.modify(m)
print "Setting account password for %s" % samname
samdb.setpassword("(&(objectClass=user)(sAMAccountName=%s))" % samname,
acct_pass,
force_change_at_next_login=False,
username=samname)
print "Enabling account %s" % acct_dn
# weird, its already enabled, but w2k8r2 disables then re-enables again
m = ldb.Message()
m.dn = ldb.Dn(samdb, acct_dn)
m["userAccountControl"] = ldb.MessageElement("83890178",
ldb.FLAG_MOD_REPLACE,
"userAccountControl")
samdb.modify(m)
m["userAccountControl"] = ldb.MessageElement("83890176",
ldb.FLAG_MOD_REPLACE,
"userAccountControl")
samdb.modify(m)
print "Doing DsBind as %s" % samname
acct_creds = Credentials()
acct_creds.guess(lp)
acct_creds.set_kerberos_state(DONT_USE_KERBEROS)
acct_creds.set_username(samname)
acct_creds.set_password(acct_pass)
drs = drsuapi.drsuapi("ncacn_ip_tcp:w2k8[seal,print]", lp, acct_creds)
drs_handle = do_DsBind(drs)
print "DRS Handle: %s" % drs_handle
print "Calling DsRGetDCNameEx2"
netr = netlogon.netlogon("ncacn_np:w2k8[print]", lp, acct_creds)
dcname = netr.netr_DsRGetDCNameEx2(server_unc=dc_dnsHostName.decode("utf-8"),
client_account=None,
mask=0,
domain_name=dnsdomain.decode("utf-8"),
domain_guid=None, site_name=None, flags=0x40001020)
print "Calling secrets self join"
secretsdb_self_join()
print "Note: RODC join is a work in progress - replication not done"
#print ndr_print(dcname)
|
