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s4-net: added initial implemention of RODC join
This does the join using python code Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
This commit is contained in:
Andrew Tridgell
289
source4/scripting/python/samba/join.py
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289
source4/scripting/python/samba/join.py
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#!/usr/bin/env python
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#
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# python join code
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# Copyright Andrew Tridgell 2010
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# Copyright Andrew Bartlett 2010
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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import samba.getopt as options
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from samba.auth import system_session
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from samba.samdb import SamDB
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from samba import gensec
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import ldb, samba
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from samba.ndr import ndr_pack, ndr_unpack, ndr_print
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from samba.dcerpc import security
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from samba.dcerpc import drsuapi, misc, netlogon
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from samba.credentials import Credentials, DONT_USE_KERBEROS
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from samba.provision import secretsdb_self_join
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def join_rodc(server=None, creds=None, lp=None, site=None, netbios_name=None):
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"""join as a RODC"""
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if server is None:
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raise Exception("You must supply a server for a RODC join")
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def del_noerror(samdb, dn):
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try:
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samdb.delete(dn)
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print "Deleted %s" % dn
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except:
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pass
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def cleanup_old_join(samdb, acct_dn, server_dn, ntds_dn,
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krbtgt_dn, connection_dn, topology_dn):
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try:
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# find the krbtgt link
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res = samdb.search(base=acct_dn, scope=ldb.SCOPE_BASE, attrs=["msDS-krbTgtLink"])
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del_noerror(samdb, acct_dn)
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del_noerror(samdb, connection_dn)
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del_noerror(samdb, krbtgt_dn)
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del_noerror(samdb, ntds_dn)
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del_noerror(samdb, server_dn)
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del_noerror(samdb, topology_dn)
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new_krbtgt_dn = res[0]["msDS-Krbtgtlink"][0]
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del_noerror(samdb, new_krbtgt_dn)
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except:
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pass
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def get_dsServiceName(samdb):
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res = samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["dsServiceName"])
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return res[0]["dsServiceName"][0]
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def get_dnsHostName(samdb):
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res = samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["dnsHostName"])
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return res[0]["dnsHostName"][0]
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def get_mysid(samdb):
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res = samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["tokenGroups"])
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binsid = res[0]["tokenGroups"][0]
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return samdb.schema_format_value("objectSID", binsid)
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def do_DsBind(drs):
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'''make a DsBind call, returning the binding handle'''
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bind_info = drsuapi.DsBindInfoCtr()
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bind_info.length = 28
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bind_info.info = drsuapi.DsBindInfo28()
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_BASE;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ASYNC_REPLICATION;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_REMOVEAPI;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_MOVEREQ_V2;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHG_COMPRESS;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V1;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_RESTORE_USN_OPTIMIZATION;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_KCC_EXECUTE;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADDENTRY_V2;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_LINKED_VALUE_REPLICATION;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V2;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_INSTANCE_TYPE_NOT_REQ_ON_MOD;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_CRYPTO_BIND;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GET_REPL_INFO;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_STRONG_ENCRYPTION;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V01;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_TRANSITIVE_MEMBERSHIP;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADD_SID_HISTORY;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_POST_BETA3;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GET_MEMBERSHIPS2;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V6;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_NONDOMAIN_NCS;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V8;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V5;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V6;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_ADDENTRYREPLY_V3;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V7;
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bind_info.info.supported_extensions |= drsuapi.DRSUAPI_SUPPORTED_EXTENSION_VERIFY_OBJECT;
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(info, handle) = drs.DsBind(misc.GUID(drsuapi.DRSUAPI_DS_BIND_GUID), bind_info)
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return handle
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creds.set_gensec_features(creds.get_gensec_features() | gensec.FEATURE_SEAL)
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samdb = SamDB(url="ldap://%s" % server,
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session_info=system_session(),
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credentials=creds, lp=lp)
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myname = netbios_name
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samname = "%s$" % myname
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base_dn = str(samdb.get_default_basedn())
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domsid = samdb.get_domain_sid()
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dc_ntds_dn = get_dsServiceName(samdb)
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dc_dnsHostName = get_dnsHostName(samdb)
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acct_pass = samba.generate_random_password(12, 32)
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mysid = get_mysid(samdb)
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# work out the DNs of all the objects we will be adding
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admin_dn = "<SID=%s>" % mysid
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krbtgt_dn = "CN=krbtgt_%s,CN=Users,%s" % (myname, base_dn)
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server_dn = "CN=%s,CN=Servers,CN=%s,CN=Sites,%s" % (myname, site, samdb.get_config_basedn())
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ntds_dn = "CN=NTDS Settings,%s" % server_dn
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connection_dn = "CN=RODC Connection (FRS),%s" % ntds_dn
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topology_dn = "CN=%s,CN=Topology,CN=Domain System Volume,CN=DFSR-GlobalSettings,CN=System,%s" % (myname, base_dn)
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never_reveal_sid = "%s-572" % domsid;
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reveal_sid = "%s-571" % domsid;
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dnsdomain = ldb.Dn(samdb, base_dn).canonical_str().split('/')[0]
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dnshostname = "%s.%s" % (myname, dnsdomain)
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acct_dn = "CN=%s,OU=Domain Controllers,%s" % (myname, base_dn)
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cleanup_old_join(samdb, acct_dn, server_dn, ntds_dn,
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krbtgt_dn, connection_dn, topology_dn)
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print "Adding %s" % acct_dn
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rec = {
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"dn" : acct_dn,
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"objectClass": "computer",
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"displayname": samname,
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"samaccountname" : samname,
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"useraccountcontrol" : "83890176",
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"managedby" : admin_dn,
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"dnshostname" : dnshostname,
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"msDS-NeverRevealGroup" : "<SID=%s>" % never_reveal_sid,
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"msDS-RevealOnDemandGroup" : "<SID=%s>" % reveal_sid}
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samdb.add(rec)
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print "Adding %s" % krbtgt_dn
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rec = {
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"dn" : krbtgt_dn,
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"objectclass" : "user",
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"useraccountcontrol" : "514",
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"showinadvancedviewonly" : "TRUE",
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"description" : "tricky account"}
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samdb.add(rec, ["rodc_join:1:1"])
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# now we need to search for the samAccountName attribute on the krbtgt DN,
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# as this will have been magically set to the krbtgt number
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res = samdb.search(base=krbtgt_dn, scope=ldb.SCOPE_BASE, attrs=["samAccountName"])
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krbtgt_name = res[0]["samAccountName"][0]
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print "Got krbtgt_name=%s" % krbtgt_name
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m = ldb.Message()
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m.dn = ldb.Dn(samdb, acct_dn)
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m["msDS-krbTgtLink"] = ldb.MessageElement(krbtgt_dn,
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ldb.FLAG_MOD_REPLACE, "msDS-krbTgtLink")
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samdb.modify(m)
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new_krbtgt_dn = "CN=%s,CN=Users,%s" % (krbtgt_name, base_dn)
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print "Renaming %s to %s" % (krbtgt_dn, new_krbtgt_dn)
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samdb.rename(krbtgt_dn, new_krbtgt_dn)
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print "Adding %s" % server_dn
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rec = {
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"dn": server_dn,
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"objectclass" : "server",
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"systemFlags" : "1375731712",
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"serverReference" : acct_dn,
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"dnsHostName" : dnshostname}
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samdb.add(rec)
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print "Adding %s" % ntds_dn
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rec = {
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"dn" : ntds_dn,
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"objectclass" : "nTDSDSA",
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"objectCategory" : "CN=NTDS-DSA-RO,%s" % samdb.get_schema_basedn(),
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"systemFlags" : "33554432",
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"dMDLocation" : str(samdb.get_schema_basedn()),
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"options" : "37",
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"msDS-Behavior-Version" : "4",
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"msDS-HasDomainNCs" : str(samdb.get_default_basedn()),
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"msDS-HasFullReplicaNCs" : [ str(samdb.get_default_basedn()),
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str(samdb.get_config_basedn()),
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str(samdb.get_schema_basedn()) ]}
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samdb.add(rec, ["rodc_join:1:1"])
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print "Adding %s" % connection_dn
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rec = {
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"dn" : connection_dn,
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"objectclass" : "nTDSConnection",
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"enabledconnection" : "TRUE",
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"options" : "65",
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"fromServer" : dc_ntds_dn}
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samdb.add(rec)
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print "Adding %s" % topology_dn
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rec = {
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"dn" : topology_dn,
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"objectclass" : "msDFSR-Member",
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"msDFSR-ComputerReference" : acct_dn,
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"serverReference" : ntds_dn}
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samdb.add(rec)
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print "Adding HOST SPNs to %s" % acct_dn
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m = ldb.Message()
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m.dn = ldb.Dn(samdb, acct_dn)
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SPNs = [ "HOST/%s" % myname,
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"HOST/%s" % dnshostname ]
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m["servicePrincipalName"] = ldb.MessageElement(SPNs,
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ldb.FLAG_MOD_ADD,
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"servicePrincipalName")
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samdb.modify(m)
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print "Adding RestrictedKrbHost SPNs to %s" % acct_dn
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m = ldb.Message()
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m.dn = ldb.Dn(samdb, acct_dn)
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SPNs = [ "RestrictedKrbHost/%s" % myname,
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"RestrictedKrbHost/%s" % dnshostname ]
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m["servicePrincipalName"] = ldb.MessageElement(SPNs,
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ldb.FLAG_MOD_ADD,
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"servicePrincipalName")
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samdb.modify(m)
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print "Setting account password for %s" % samname
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samdb.setpassword("(&(objectClass=user)(sAMAccountName=%s))" % samname,
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acct_pass,
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force_change_at_next_login=False,
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username=samname)
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print "Enabling account %s" % acct_dn
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# weird, its already enabled, but w2k8r2 disables then re-enables again
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m = ldb.Message()
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m.dn = ldb.Dn(samdb, acct_dn)
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m["userAccountControl"] = ldb.MessageElement("83890178",
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ldb.FLAG_MOD_REPLACE,
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"userAccountControl")
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samdb.modify(m)
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m["userAccountControl"] = ldb.MessageElement("83890176",
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ldb.FLAG_MOD_REPLACE,
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"userAccountControl")
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samdb.modify(m)
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print "Doing DsBind as %s" % samname
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acct_creds = Credentials()
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acct_creds.guess(lp)
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acct_creds.set_kerberos_state(DONT_USE_KERBEROS)
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acct_creds.set_username(samname)
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acct_creds.set_password(acct_pass)
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drs = drsuapi.drsuapi("ncacn_ip_tcp:w2k8[seal,print]", lp, acct_creds)
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drs_handle = do_DsBind(drs)
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print "DRS Handle: %s" % drs_handle
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print "Calling DsRGetDCNameEx2"
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netr = netlogon.netlogon("ncacn_np:w2k8[print]", lp, acct_creds)
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dcname = netr.netr_DsRGetDCNameEx2(server_unc=dc_dnsHostName.decode("utf-8"),
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client_account=None,
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mask=0,
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domain_name=dnsdomain.decode("utf-8"),
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domain_guid=None, site_name=None, flags=0x40001020)
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print "Calling secrets self join"
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secretsdb_self_join()
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print "Note: RODC join is a work in progress - replication not done"
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#print ndr_print(dcname)
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