diff options
Diffstat (limited to 'source4/scripting/python')
| -rw-r--r-- | source4/scripting/python/samba/join.py | 316 |
1 files changed, 267 insertions, 49 deletions
diff --git a/source4/scripting/python/samba/join.py b/source4/scripting/python/samba/join.py index cf2033481e..533c88dd62 100644 --- a/source4/scripting/python/samba/join.py +++ b/source4/scripting/python/samba/join.py @@ -25,7 +25,7 @@ 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.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 @@ -33,6 +33,7 @@ from samba.net import Net from samba.dcerpc import security import logging import talloc +import random # this makes debugging easier talloc.enable_null_tracking() @@ -159,6 +160,30 @@ class dc_join(object): 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.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 @@ -195,6 +220,13 @@ class dc_join(object): expression='ncName=%s' % ctx.samdb.get_default_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_mysid(ctx): '''get the SID of the connected user. Only works with w2k8 and later, so only used for RODC join''' @@ -309,6 +341,67 @@ class dc_join(object): ctr.err_data.info.extended_err)) raise RuntimeError("DsAddEntry failed") + 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} + + if ctx.subdomain: + # the local subdomain NC doesn't exist at this time + # so we have to add the base_dn NC later + nc_list = [ ctx.config_dn, ctx.schema_dn ] + else: + 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(ctx.behavior_version) + + if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003 and not ctx.subdomain: + 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(misc.GUID(str(uuid.uuid4()))) + if ctx.subdomain: + ctx.samdb.add(rec, ['relax:0']) + else: + 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_modify_ntdsdsa(ctx): + '''modify the ntdsdsa object to add local partitions''' + print "Modifying %s using system privileges" % ctx.ntds_dn + + # this works around the Enterprise Admins ACL on the NTDSDSA object + system_session_info = system_session() + ctx.samdb.set_session_info(system_session_info) + + m = ldb.Message() + m.dn = ldb.Dn(ctx.samdb, ctx.ntds_dn) + m["HasMasterNCs"] = ldb.MessageElement(ctx.base_dn, ldb.FLAG_MOD_ADD, "HasMasterNCs") + if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003: + m["msDS-HasDomainNCs"] = ldb.MessageElement(ctx.base_dn, ldb.FLAG_MOD_ADD, "msDS-HasDomainNCs") + m["msDS-HasMasterNCs"] = ldb.MessageElement(ctx.base_dn, ldb.FLAG_MOD_ADD, "msDS-HasMasterNCs") + ctx.samdb.modify(m, controls=['relax:0']) + def join_add_objects(ctx): '''add the various objects needed for the join''' if ctx.acct_dn: @@ -347,50 +440,12 @@ class dc_join(object): 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) - if ctx.subdomain: - print "Adding %s" % ctx.partition_dn - rec = { - "dn" : ctx.partition_dn, - "objectclass" : "crossRef", - "systemFlags" : str(samba.dsdb.SYSTEM_FLAG_CR_NTDS_NC|samba.dsdb.SYSTEM_FLAG_CR_NTDS_DOMAIN), - "dnsRoot": ctx.dnsdomain, - "nCName" : extended_base_dn, - "nETBIOSName" : ctx.domain_name, - "ntMixedDomain": str(0), - "msDS-Behavior-Version" : str(ctx.behavior_version)} - ctx.DsAddEntry(rec) + # the rest is done after replication + ctx.ntds_guid = None + return - # 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])) + ctx.join_add_ntdsdsa() if ctx.connection_dn is not None: print "Adding %s" % ctx.connection_dn @@ -438,6 +493,28 @@ class dc_join(object): "userAccountControl") ctx.samdb.modify(m) + + def join_add_objects2(ctx): + '''add the various objects needed for the join, for subdomains post replication''' + + if not ctx.subdomain: + return + + 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)} + ctx.DsAddEntry(rec) + + def join_provision(ctx): '''provision the local SAM''' @@ -454,6 +531,7 @@ class dc_join(object): configdn=ctx.config_dn, serverdn=ctx.server_dn, domain=ctx.domain_name, hostname=ctx.myname, domainsid=ctx.domsid, + domainguid=ctx.domguid, machinepass=ctx.acct_pass, serverrole="domain controller", sitename=ctx.site, lp=ctx.lp, ntdsguid=ctx.ntds_guid) print "Provision OK for domain DN %s" % presult.domaindn @@ -465,7 +543,12 @@ class dc_join(object): def join_provision_own_domain(ctx): '''provision the local SAM''' - print "Calling bare provision" + # we now operate exclusively on the local database + ctx.samdb = ctx.local_samdb + + ctx.join_add_ntdsdsa() + + print("Calling own domain provision") logger = logging.getLogger("provision") logger.addHandler(logging.StreamHandler(sys.stdout)) @@ -474,10 +557,11 @@ class dc_join(object): presult = provision_fill(ctx.local_samdb, secrets_ldb, logger, ctx.names, ctx.paths, domainsid=security.dom_sid(ctx.domsid), + domainguid=ctx.domguid, targetdir=ctx.targetdir, samdb_fill=FILL_SUBDOMAIN, machinepass=ctx.acct_pass, serverrole="domain controller", lp=ctx.lp) - print "Provision OK for domain %s" % ctx.names.dnsdomain + print("Provision OK for domain %s" % ctx.names.dnsdomain) def join_replicate(ctx): @@ -487,7 +571,10 @@ class dc_join(object): 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.ntds_guid is None: + destination_dsa_guid = misc.GUID(drsuapi.DRSUAPI_DS_BIND_GUID_W2K3) + else: + destination_dsa_guid = ctx.ntds_guid if ctx.RODC: repl_creds = Credentials() @@ -542,6 +629,9 @@ class dc_join(object): 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" @@ -554,19 +644,142 @@ class dc_join(object): 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 gere? 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 = 0 + clear_authentication_information.AuthType = lsa.TRUST_AUTH_TYPE_CLEAR + clear_authentication_information.AuthInfo = clear_value + + version_value = drsblobs.AuthInfoVersion() + version_value.version = 1 + + version = drsblobs.AuthenticationInformation() + version.LastUpdateTime = 0 + version.AuthType = lsa.TRUST_AUTH_TYPE_VERSION + version.AuthInfo = version_value + + authentication_information_array = drsblobs.AuthenticationInformationArray() + authentication_information_array.count = 2 + authentication_information_array.array = [clear_authentication_information, version] + + 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.parent_dnsdomain, ctx.base_dn), + "objectclass" : "trustedDomain", + "trustType" : str(info.trust_type), + "trustAttributes" : str(info.trust_attributes), + "trustDirection" : str(info.trust_direction), + "flatname" : ctx.parent_domain_name, + "trustPartner" : ctx.parent_dnsdomain, + "trustAuthIncoming" : ndr_pack(outgoing), + "trustAuthOutgoing" : ndr_pack(outgoing) + } + ctx.local_samdb.add(rec) + + rec = { + "dn" : "cn=%s$,cn=users,%s" % (ctx.parent_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() + ctx.join_add_objects2() if ctx.subdomain: ctx.join_provision_own_domain() - else: - ctx.join_finalise() + ctx.join_setup_trusts() + ctx.join_modify_ntdsdsa() + ctx.join_finalise() except Exception: print "Join failed - cleaning up" - ctx.cleanup_old_join() + #ctx.cleanup_old_join() raise @@ -655,14 +868,19 @@ def join_subdomain(server=None, creds=None, lp=None, site=None, netbios_name=Non """join as a DC""" ctx = dc_join(server, creds, lp, site, netbios_name, targetdir, parent_domain) 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.base_dn = samba.dn_from_dns_name(dnsdomain) ctx.domsid = str(security.random_sid()) + ctx.domguid = str(uuid.uuid4()) ctx.acct_dn = None ctx.dnshostname = "%s.%s" % (ctx.myname, ctx.dnsdomain) + ctx.trustdom_pass = samba.generate_random_password(32, 40) ctx.userAccountControl = samba.dsdb.UF_SERVER_TRUST_ACCOUNT | samba.dsdb.UF_TRUSTED_FOR_DELEGATION |