source4/scripting/python/samba/join.py

   1 #!/usr/bin/env python
   2 #
   3 # python join code
   4 # Copyright Andrew Tridgell 2010
   5 # Copyright Andrew Bartlett 2010
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 #
  20
  21 """Joining a domain."""
  22
  23 from samba.auth import system_session
  24 from samba.samdb import SamDB
  25 from samba import gensec, Ldb, drs_utils
  26 import ldb, samba, sys, os, uuid
  27 from samba.ndr import ndr_pack
  28 from samba.dcerpc import security, drsuapi, misc, nbt, lsa, drsblobs
  29 from samba.credentials import Credentials, DONT_USE_KERBEROS
  30 from samba.provision import secretsdb_self_join, provision, provision_fill, FILL_DRS, FILL_SUBDOMAIN
  31 from samba.schema import Schema
  32 from samba.net import Net
  33 from samba.dcerpc import security
  34 import logging
  35 import talloc
  36 import random
  37 import time
  38
  39 # this makes debugging easier
  40 talloc.enable_null_tracking()
  41
  42 class DCJoinException(Exception):
  43
  44     def __init__(self, msg):
  45         super(DCJoinException, self).__init__("Can't join, error: %s" % msg)
  46
  47
  48 class dc_join(object):
  49     '''perform a DC join'''
  50
  51     def __init__(ctx, server=None, creds=None, lp=None, site=None,
  52             netbios_name=None, targetdir=None, domain=None):
  53         ctx.creds = creds
  54         ctx.lp = lp
  55         ctx.site = site
  56         ctx.netbios_name = netbios_name
  57         ctx.targetdir = targetdir
  58
  59         ctx.creds.set_gensec_features(creds.get_gensec_features() | gensec.FEATURE_SEAL)
  60         ctx.net = Net(creds=ctx.creds, lp=ctx.lp)
  61
  62         if server is not None:
  63             ctx.server = server
  64         else:
  65             print("Finding a writeable DC for domain '%s'" % domain)
  66             ctx.server = ctx.find_dc(domain)
  67             print("Found DC %s" % ctx.server)
  68
  69         ctx.samdb = SamDB(url="ldap://%s" % ctx.server,
  70                           session_info=system_session(),
  71                           credentials=ctx.creds, lp=ctx.lp)
  72
  73         try:
  74             ctx.samdb.search(scope=ldb.SCOPE_ONELEVEL, attrs=["dn"])
  75         except ldb.LdbError, (enum, estr):
  76             raise DCJoinException(estr)
  77
  78
  79         ctx.myname = netbios_name
  80         ctx.samname = "%s$" % ctx.myname
  81         ctx.base_dn = str(ctx.samdb.get_default_basedn())
  82         ctx.root_dn = str(ctx.samdb.get_root_basedn())
  83         ctx.schema_dn = str(ctx.samdb.get_schema_basedn())
  84         ctx.config_dn = str(ctx.samdb.get_config_basedn())
  85         ctx.domsid = ctx.samdb.get_domain_sid()
  86         ctx.domain_name = ctx.get_domain_name()
  87         ctx.forest_domain_name = ctx.get_forest_domain_name()
  88         ctx.invocation_id = misc.GUID(str(uuid.uuid4()))
  89
  90         ctx.dc_ntds_dn = ctx.get_dsServiceName()
  91         ctx.dc_dnsHostName = ctx.get_dnsHostName()
  92         ctx.behavior_version = ctx.get_behavior_version()
  93
  94         ctx.acct_pass = samba.generate_random_password(32, 40)
  95
  96         # work out the DNs of all the objects we will be adding
  97         ctx.server_dn = "CN=%s,CN=Servers,CN=%s,CN=Sites,%s" % (ctx.myname, ctx.site, ctx.config_dn)
  98         ctx.ntds_dn = "CN=NTDS Settings,%s" % ctx.server_dn
  99         topology_base = "CN=Topology,CN=Domain System Volume,CN=DFSR-GlobalSettings,CN=System,%s" % ctx.base_dn
 100         if ctx.dn_exists(topology_base):
 101             ctx.topology_dn = "CN=%s,%s" % (ctx.myname, topology_base)
 102         else:
 103             ctx.topology_dn = None
 104
 105         ctx.dnsdomain = ctx.samdb.domain_dns_name()
 106         ctx.dnsforest = ctx.samdb.forest_dns_name()
 107         ctx.dnshostname = "%s.%s" % (ctx.myname, ctx.dnsdomain)
 108
 109         ctx.realm = ctx.dnsdomain
 110
 111         ctx.acct_dn = "CN=%s,OU=Domain Controllers,%s" % (ctx.myname, ctx.base_dn)
 112
 113         ctx.tmp_samdb = None
 114
 115         ctx.SPNs = [ "HOST/%s" % ctx.myname,
 116                      "HOST/%s" % ctx.dnshostname,
 117                      "GC/%s/%s" % (ctx.dnshostname, ctx.dnsforest) ]
 118
 119         # these elements are optional
 120         ctx.never_reveal_sid = None
 121         ctx.reveal_sid = None
 122         ctx.connection_dn = None
 123         ctx.RODC = False
 124         ctx.krbtgt_dn = None
 125         ctx.drsuapi = None
 126         ctx.managedby = None
 127         ctx.subdomain = False
 128
 129
 130     def del_noerror(ctx, dn, recursive=False):
 131         if recursive:
 132             try:
 133                 res = ctx.samdb.search(base=dn, scope=ldb.SCOPE_ONELEVEL, attrs=["dn"])
 134             except Exception:
 135                 return
 136             for r in res:
 137                 ctx.del_noerror(r.dn, recursive=True)
 138         try:
 139             ctx.samdb.delete(dn)
 140             print "Deleted %s" % dn
 141         except Exception:
 142             pass
 143
 144     def cleanup_old_join(ctx):
 145         '''remove any DNs from a previous join'''
 146         try:
 147             # find the krbtgt link
 148             print("checking samaccountname")
 149             if ctx.subdomain:
 150                 res = None
 151             else:
 152                 res = ctx.samdb.search(base=ctx.samdb.get_default_basedn(),
 153                                        expression='samAccountName=%s' % ldb.binary_encode(ctx.samname),
 154                                        attrs=["msDS-krbTgtLink"])
 155                 if res:
 156                     ctx.del_noerror(res[0].dn, recursive=True)
 157             if ctx.connection_dn is not None:
 158                 ctx.del_noerror(ctx.connection_dn)
 159             if ctx.krbtgt_dn is not None:
 160                 ctx.del_noerror(ctx.krbtgt_dn)
 161             ctx.del_noerror(ctx.ntds_dn)
 162             ctx.del_noerror(ctx.server_dn, recursive=True)
 163             if ctx.topology_dn:
 164                 ctx.del_noerror(ctx.topology_dn)
 165             if ctx.partition_dn:
 166                 ctx.del_noerror(ctx.partition_dn)
 167             if res:
 168                 ctx.new_krbtgt_dn = res[0]["msDS-Krbtgtlink"][0]
 169                 ctx.del_noerror(ctx.new_krbtgt_dn)
 170
 171             if ctx.subdomain:
 172                 binding_options = "sign"
 173                 lsaconn = lsa.lsarpc("ncacn_ip_tcp:%s[%s]" % (ctx.server, binding_options),
 174                                      ctx.lp, ctx.creds)
 175
 176                 objectAttr = lsa.ObjectAttribute()
 177                 objectAttr.sec_qos = lsa.QosInfo()
 178
 179                 pol_handle = lsaconn.OpenPolicy2(''.decode('utf-8'),
 180                                                  objectAttr, security.SEC_FLAG_MAXIMUM_ALLOWED)
 181
 182                 name = lsa.String()
 183                 name.string = ctx.realm
 184                 info = lsaconn.QueryTrustedDomainInfoByName(pol_handle, name, lsa.LSA_TRUSTED_DOMAIN_INFO_FULL_INFO)
 185
 186                 lsaconn.DeleteTrustedDomain(pol_handle, info.info_ex.sid)
 187
 188                 name = lsa.String()
 189                 name.string = ctx.forest_domain_name
 190                 info = lsaconn.QueryTrustedDomainInfoByName(pol_handle, name, lsa.LSA_TRUSTED_DOMAIN_INFO_FULL_INFO)
 191
 192                 lsaconn.DeleteTrustedDomain(pol_handle, info.info_ex.sid)
 193
 194         except Exception:
 195             pass
 196
 197     def find_dc(ctx, domain):
 198         '''find a writeable DC for the given domain'''
 199         try:
 200             ctx.cldap_ret = ctx.net.finddc(domain, nbt.NBT_SERVER_LDAP | nbt.NBT_SERVER_DS | nbt.NBT_SERVER_WRITABLE)
 201         except Exception:
 202             raise Exception("Failed to find a writeable DC for domain '%s'" % domain)
 203         if ctx.cldap_ret.client_site is not None and ctx.cldap_ret.client_site != "":
 204             ctx.site = ctx.cldap_ret.client_site
 205         return ctx.cldap_ret.pdc_dns_name
 206
 207
 208     def get_dsServiceName(ctx):
 209         res = ctx.samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["dsServiceName"])
 210         return res[0]["dsServiceName"][0]
 211
 212     def get_behavior_version(ctx):
 213         res = ctx.samdb.search(base=ctx.base_dn, scope=ldb.SCOPE_BASE, attrs=["msDS-Behavior-Version"])
 214         if "msDS-Behavior-Version" in res[0]:
 215             return int(res[0]["msDS-Behavior-Version"][0])
 216         else:
 217             return samba.dsdb.DS_DOMAIN_FUNCTION_2000
 218
 219     def get_dnsHostName(ctx):
 220         res = ctx.samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["dnsHostName"])
 221         return res[0]["dnsHostName"][0]
 222
 223     def get_domain_name(ctx):
 224         '''get netbios name of the domain from the partitions record'''
 225         partitions_dn = ctx.samdb.get_partitions_dn()
 226         res = ctx.samdb.search(base=partitions_dn, scope=ldb.SCOPE_ONELEVEL, attrs=["nETBIOSName"],
 227                                expression='ncName=%s' % ctx.samdb.get_default_basedn())
 228         return res[0]["nETBIOSName"][0]
 229
 230     def get_forest_domain_name(ctx):
 231         '''get netbios name of the domain from the partitions record'''
 232         partitions_dn = ctx.samdb.get_partitions_dn()
 233         res = ctx.samdb.search(base=partitions_dn, scope=ldb.SCOPE_ONELEVEL, attrs=["nETBIOSName"],
 234                                expression='ncName=%s' % ctx.samdb.get_root_basedn())
 235         return res[0]["nETBIOSName"][0]
 236
 237     def get_parent_partition_dn(ctx):
 238         '''get the parent domain partition DN from parent DNS name'''
 239         res = ctx.samdb.search(base=ctx.config_dn, attrs=[],
 240                                expression='(&(objectclass=crossRef)(dnsRoot=%s)(systemFlags:%s:=%u))' %
 241                                (ctx.parent_dnsdomain, ldb.OID_COMPARATOR_AND, samba.dsdb.SYSTEM_FLAG_CR_NTDS_DOMAIN))
 242         return str(res[0].dn)
 243
 244     def get_naming_master(ctx):
 245         '''get the parent domain partition DN from parent DNS name'''
 246         res = ctx.samdb.search(base='CN=Partitions,%s' % ctx.config_dn, attrs=['fSMORoleOwner'],
 247                                scope=ldb.SCOPE_BASE, controls=["extended_dn:1:1"])
 248         if not 'fSMORoleOwner' in res[0]:
 249             raise DCJoinException("Can't find naming master on partition DN %s" % ctx.partition_dn)
 250         master_guid = str(misc.GUID(ldb.Dn(ctx.samdb, res[0]['fSMORoleOwner'][0]).get_extended_component('GUID')))
 251         master_host = '%s._msdcs.%s' % (master_guid, ctx.dnsforest)
 252         return master_host
 253
 254     def get_mysid(ctx):
 255         '''get the SID of the connected user. Only works with w2k8 and later,
 256            so only used for RODC join'''
 257         res = ctx.samdb.search(base="", scope=ldb.SCOPE_BASE, attrs=["tokenGroups"])
 258         binsid = res[0]["tokenGroups"][0]
 259         return ctx.samdb.schema_format_value("objectSID", binsid)
 260
 261     def dn_exists(ctx, dn):
 262         '''check if a DN exists'''
 263         try:
 264             res = ctx.samdb.search(base=dn, scope=ldb.SCOPE_BASE, attrs=[])
 265         except ldb.LdbError, (enum, estr):
 266             if enum == ldb.ERR_NO_SUCH_OBJECT:
 267                 return False
 268             raise
 269         return True
 270
 271     def add_krbtgt_account(ctx):
 272         '''RODCs need a special krbtgt account'''
 273         print "Adding %s" % ctx.krbtgt_dn
 274         rec = {
 275             "dn" : ctx.krbtgt_dn,
 276             "objectclass" : "user",
 277             "useraccountcontrol" : str(samba.dsdb.UF_NORMAL_ACCOUNT |
 278                                        samba.dsdb.UF_ACCOUNTDISABLE),
 279             "showinadvancedviewonly" : "TRUE",
 280             "description" : "krbtgt for %s" % ctx.samname}
 281         ctx.samdb.add(rec, ["rodc_join:1:1"])
 282
 283         # now we need to search for the samAccountName attribute on the krbtgt DN,
 284         # as this will have been magically set to the krbtgt number
 285         res = ctx.samdb.search(base=ctx.krbtgt_dn, scope=ldb.SCOPE_BASE, attrs=["samAccountName"])
 286         ctx.krbtgt_name = res[0]["samAccountName"][0]
 287
 288         print "Got krbtgt_name=%s" % ctx.krbtgt_name
 289
 290         m = ldb.Message()
 291         m.dn = ldb.Dn(ctx.samdb, ctx.acct_dn)
 292         m["msDS-krbTgtLink"] = ldb.MessageElement(ctx.krbtgt_dn,
 293                                                   ldb.FLAG_MOD_REPLACE, "msDS-krbTgtLink")
 294         ctx.samdb.modify(m)
 295
 296         ctx.new_krbtgt_dn = "CN=%s,CN=Users,%s" % (ctx.krbtgt_name, ctx.base_dn)
 297         print "Renaming %s to %s" % (ctx.krbtgt_dn, ctx.new_krbtgt_dn)
 298         ctx.samdb.rename(ctx.krbtgt_dn, ctx.new_krbtgt_dn)
 299
 300     def drsuapi_connect(ctx):
 301         '''make a DRSUAPI connection to the naming master'''
 302         binding_options = "seal"
 303         if int(ctx.lp.get("log level")) >= 4:
 304             binding_options += ",print"
 305         binding_string = "ncacn_ip_tcp:%s[%s]" % (ctx.server, binding_options)
 306         ctx.drsuapi = drsuapi.drsuapi(binding_string, ctx.lp, ctx.creds)
 307         (ctx.drsuapi_handle, ctx.bind_supported_extensions) = drs_utils.drs_DsBind(ctx.drsuapi)
 308
 309     def create_tmp_samdb(ctx):
 310         '''create a temporary samdb object for schema queries'''
 311         ctx.tmp_schema = Schema(security.dom_sid(ctx.domsid),
 312                                 schemadn=ctx.schema_dn)
 313         ctx.tmp_samdb = SamDB(session_info=system_session(), url=None, auto_connect=False,
 314                               credentials=ctx.creds, lp=ctx.lp, global_schema=False,
 315                               am_rodc=False)
 316         ctx.tmp_samdb.set_schema(ctx.tmp_schema)
 317
 318     def build_DsReplicaAttribute(ctx, attrname, attrvalue):
 319         '''build a DsReplicaAttributeCtr object'''
 320         r = drsuapi.DsReplicaAttribute()
 321         r.attid = ctx.tmp_samdb.get_attid_from_lDAPDisplayName(attrname)
 322         r.value_ctr = 1
 323
 324
 325     def DsAddEntry(ctx, recs):
 326         '''add a record via the DRSUAPI DsAddEntry call'''
 327         if ctx.drsuapi is None:
 328             ctx.drsuapi_connect()
 329         if ctx.tmp_samdb is None:
 330             ctx.create_tmp_samdb()
 331
 332         objects = []
 333         for rec in recs:
 334             id = drsuapi.DsReplicaObjectIdentifier()
 335             id.dn = rec['dn']
 336
 337             attrs = []
 338             for a in rec:
 339                 if a == 'dn':
 340                     continue
 341                 if not isinstance(rec[a], list):
 342                     v = [rec[a]]
 343                 else:
 344                     v = rec[a]
 345                 rattr = ctx.tmp_samdb.dsdb_DsReplicaAttribute(ctx.tmp_samdb, a, v)
 346                 attrs.append(rattr)
 347
 348             attribute_ctr = drsuapi.DsReplicaAttributeCtr()
 349             attribute_ctr.num_attributes = len(attrs)
 350             attribute_ctr.attributes = attrs
 351
 352             object = drsuapi.DsReplicaObject()
 353             object.identifier = id
 354             object.attribute_ctr = attribute_ctr
 355
 356             list_object = drsuapi.DsReplicaObjectListItem()
 357             list_object.object = object
 358             objects.append(list_object)
 359
 360         req2 = drsuapi.DsAddEntryRequest2()
 361         req2.first_object = objects[0]
 362         prev = req2.first_object
 363         for o in objects[1:]:
 364             prev.next_object = o
 365             prev = o
 366
 367         (level, ctr) = ctx.drsuapi.DsAddEntry(ctx.drsuapi_handle, 2, req2)
 368         if ctr.err_ver != 1:
 369             raise RuntimeError("expected err_ver 1, got %u" % ctr.err_ver)
 370         if ctr.err_data.status != (0, 'WERR_OK'):
 371             print("DsAddEntry failed with status %s info %s" % (ctr.err_data.status,
 372                                                                 ctr.err_data.info.extended_err))
 373             raise RuntimeError("DsAddEntry failed")
 374         if ctr.err_data.dir_err != drsuapi.DRSUAPI_DIRERR_OK:
 375             print("DsAddEntry failed with dir_err %u" % ctr.err_data.dir_err)
 376             raise RuntimeError("DsAddEntry failed")
 377         return ctr.objects
 378
 379
 380     def join_add_ntdsdsa(ctx):
 381         '''add the ntdsdsa object'''
 382         # FIXME: the partition (NC) assignment has to be made dynamic
 383         print "Adding %s" % ctx.ntds_dn
 384         rec = {
 385             "dn" : ctx.ntds_dn,
 386             "objectclass" : "nTDSDSA",
 387             "systemFlags" : str(samba.dsdb.SYSTEM_FLAG_DISALLOW_MOVE_ON_DELETE),
 388             "dMDLocation" : ctx.schema_dn}
 389
 390         nc_list = [ ctx.base_dn, ctx.config_dn, ctx.schema_dn ]
 391
 392         if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
 393             rec["msDS-Behavior-Version"] = str(ctx.behavior_version)
 394
 395         if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
 396             rec["msDS-HasDomainNCs"] = ctx.base_dn
 397
 398         if ctx.RODC:
 399             rec["objectCategory"] = "CN=NTDS-DSA-RO,%s" % ctx.schema_dn
 400             rec["msDS-HasFullReplicaNCs"] = nc_list
 401             rec["options"] = "37"
 402             ctx.samdb.add(rec, ["rodc_join:1:1"])
 403         else:
 404             rec["objectCategory"] = "CN=NTDS-DSA,%s" % ctx.schema_dn
 405             rec["HasMasterNCs"]      = nc_list
 406             if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
 407                 rec["msDS-HasMasterNCs"] = nc_list
 408             rec["options"] = "1"
 409             rec["invocationId"] = ndr_pack(ctx.invocation_id)
 410             ctx.DsAddEntry([rec])
 411
 412         # find the GUID of our NTDS DN
 413         res = ctx.samdb.search(base=ctx.ntds_dn, scope=ldb.SCOPE_BASE, attrs=["objectGUID"])
 414         ctx.ntds_guid = misc.GUID(ctx.samdb.schema_format_value("objectGUID", res[0]["objectGUID"][0]))
 415
 416
 417     def join_add_objects(ctx):
 418         '''add the various objects needed for the join'''
 419         if ctx.acct_dn:
 420             print "Adding %s" % ctx.acct_dn
 421             rec = {
 422                 "dn" : ctx.acct_dn,
 423                 "objectClass": "computer",
 424                 "displayname": ctx.samname,
 425                 "samaccountname" : ctx.samname,
 426                 "userAccountControl" : str(ctx.userAccountControl | samba.dsdb.UF_ACCOUNTDISABLE),
 427                 "dnshostname" : ctx.dnshostname}
 428             if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2008:
 429                 rec['msDS-SupportedEncryptionTypes'] = str(samba.dsdb.ENC_ALL_TYPES)
 430             if ctx.managedby:
 431                 rec["managedby"] = ctx.managedby
 432             if ctx.never_reveal_sid:
 433                 rec["msDS-NeverRevealGroup"] = ctx.never_reveal_sid
 434             if ctx.reveal_sid:
 435                 rec["msDS-RevealOnDemandGroup"] = ctx.reveal_sid
 436             ctx.samdb.add(rec)
 437
 438         if ctx.krbtgt_dn:
 439             ctx.add_krbtgt_account()
 440
 441         print "Adding %s" % ctx.server_dn
 442         rec = {
 443             "dn": ctx.server_dn,
 444             "objectclass" : "server",
 445             # windows uses 50000000 decimal for systemFlags. A windows hex/decimal mixup bug?
 446             "systemFlags" : str(samba.dsdb.SYSTEM_FLAG_CONFIG_ALLOW_RENAME |
 447                                 samba.dsdb.SYSTEM_FLAG_CONFIG_ALLOW_LIMITED_MOVE |
 448                                 samba.dsdb.SYSTEM_FLAG_DISALLOW_MOVE_ON_DELETE),
 449             # windows seems to add the dnsHostName later
 450             "dnsHostName" : ctx.dnshostname}
 451
 452         if ctx.acct_dn:
 453             rec["serverReference"] = ctx.acct_dn
 454
 455         ctx.samdb.add(rec)
 456
 457         if ctx.subdomain:
 458             # the rest is done after replication
 459             ctx.ntds_guid = None
 460             return
 461
 462         ctx.join_add_ntdsdsa()
 463
 464         if ctx.connection_dn is not None:
 465             print "Adding %s" % ctx.connection_dn
 466             rec = {
 467                 "dn" : ctx.connection_dn,
 468                 "objectclass" : "nTDSConnection",
 469                 "enabledconnection" : "TRUE",
 470                 "options" : "65",
 471                 "fromServer" : ctx.dc_ntds_dn}
 472             ctx.samdb.add(rec)
 473
 474         if ctx.topology_dn and ctx.acct_dn:
 475             print "Adding %s" % ctx.topology_dn
 476             rec = {
 477                 "dn" : ctx.topology_dn,
 478                 "objectclass" : "msDFSR-Member",
 479                 "msDFSR-ComputerReference" : ctx.acct_dn,
 480                 "serverReference" : ctx.ntds_dn}
 481             ctx.samdb.add(rec)
 482
 483         if ctx.acct_dn:
 484             print "Adding SPNs to %s" % ctx.acct_dn
 485             m = ldb.Message()
 486             m.dn = ldb.Dn(ctx.samdb, ctx.acct_dn)
 487             for i in range(len(ctx.SPNs)):
 488                 ctx.SPNs[i] = ctx.SPNs[i].replace("$NTDSGUID", str(ctx.ntds_guid))
 489             m["servicePrincipalName"] = ldb.MessageElement(ctx.SPNs,
 490                                                            ldb.FLAG_MOD_ADD,
 491                                                            "servicePrincipalName")
 492             ctx.samdb.modify(m)
 493
 494             print "Setting account password for %s" % ctx.samname
 495             ctx.samdb.setpassword("(&(objectClass=user)(sAMAccountName=%s))" % ldb.binary_encode(ctx.samname),
 496                                   ctx.acct_pass,
 497                                   force_change_at_next_login=False,
 498                                   username=ctx.samname)
 499             res = ctx.samdb.search(base=ctx.acct_dn, scope=ldb.SCOPE_BASE, attrs=["msDS-keyVersionNumber"])
 500             ctx.key_version_number = int(res[0]["msDS-keyVersionNumber"][0])
 501
 502             print("Enabling account")
 503             m = ldb.Message()
 504             m.dn = ldb.Dn(ctx.samdb, ctx.acct_dn)
 505             m["userAccountControl"] = ldb.MessageElement(str(ctx.userAccountControl),
 506                                                          ldb.FLAG_MOD_REPLACE,
 507                                                          "userAccountControl")
 508             ctx.samdb.modify(m)
 509
 510
 511     def join_add_objects2(ctx):
 512         '''add the various objects needed for the join, for subdomains post replication'''
 513
 514         print "Adding %s" % ctx.partition_dn
 515         # NOTE: windows sends a ntSecurityDescriptor here, we
 516         # let it default
 517         rec = {
 518             "dn" : ctx.partition_dn,
 519             "objectclass" : "crossRef",
 520             "objectCategory" : "CN=Cross-Ref,%s" % ctx.schema_dn,
 521             "nCName" : ctx.base_dn,
 522             "nETBIOSName" : ctx.domain_name,
 523             "dnsRoot": ctx.dnsdomain,
 524             "trustParent" : ctx.parent_partition_dn,
 525             "systemFlags" : str(samba.dsdb.SYSTEM_FLAG_CR_NTDS_NC|samba.dsdb.SYSTEM_FLAG_CR_NTDS_DOMAIN)}
 526         if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
 527             rec["msDS-Behavior-Version"] = str(ctx.behavior_version)
 528
 529         rec2 = {
 530             "dn" : ctx.ntds_dn,
 531             "objectclass" : "nTDSDSA",
 532             "systemFlags" : str(samba.dsdb.SYSTEM_FLAG_DISALLOW_MOVE_ON_DELETE),
 533             "dMDLocation" : ctx.schema_dn}
 534
 535         nc_list = [ ctx.base_dn, ctx.config_dn, ctx.schema_dn ]
 536
 537         if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
 538             rec2["msDS-Behavior-Version"] = str(ctx.behavior_version)
 539
 540         if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
 541             rec2["msDS-HasDomainNCs"] = ctx.base_dn
 542
 543         rec2["objectCategory"] = "CN=NTDS-DSA,%s" % ctx.schema_dn
 544         rec2["HasMasterNCs"]      = nc_list
 545         if ctx.behavior_version >= samba.dsdb.DS_DOMAIN_FUNCTION_2003:
 546             rec2["msDS-HasMasterNCs"] = nc_list
 547         rec2["options"] = "1"
 548         rec2["invocationId"] = ndr_pack(ctx.invocation_id)
 549
 550         objects = ctx.DsAddEntry([rec, rec2])
 551         if len(objects) != 2:
 552             raise DCJoinException("Expected 2 objects from DsAddEntry")
 553
 554         ctx.ntds_guid = objects[1].guid
 555
 556         print("Replicating partition DN")
 557         ctx.repl.replicate(ctx.partition_dn,
 558                            misc.GUID("00000000-0000-0000-0000-000000000000"),
 559                            ctx.ntds_guid,
 560                            exop=drsuapi.DRSUAPI_EXOP_REPL_OBJ,
 561                            replica_flags=drsuapi.DRSUAPI_DRS_WRIT_REP)
 562
 563         print("Replicating NTDS DN")
 564         ctx.repl.replicate(ctx.ntds_dn,
 565                            misc.GUID("00000000-0000-0000-0000-000000000000"),
 566                            ctx.ntds_guid,
 567                            exop=drsuapi.DRSUAPI_EXOP_REPL_OBJ,
 568                            replica_flags=drsuapi.DRSUAPI_DRS_WRIT_REP)
 569
 570     def join_provision(ctx):
 571         '''provision the local SAM'''
 572
 573         print "Calling bare provision"
 574
 575         logger = logging.getLogger("provision")
 576         logger.addHandler(logging.StreamHandler(sys.stdout))
 577         smbconf = ctx.lp.configfile
 578
 579         presult = provision(logger, system_session(), None,
 580                             smbconf=smbconf, targetdir=ctx.targetdir, samdb_fill=FILL_DRS,
 581                             realm=ctx.realm, rootdn=ctx.root_dn, domaindn=ctx.base_dn,
 582                             schemadn=ctx.schema_dn,
 583                             configdn=ctx.config_dn,
 584                             serverdn=ctx.server_dn, domain=ctx.domain_name,
 585                             hostname=ctx.myname, domainsid=ctx.domsid,
 586                             machinepass=ctx.acct_pass, serverrole="domain controller",
 587                             sitename=ctx.site, lp=ctx.lp, ntdsguid=ctx.ntds_guid)
 588         print "Provision OK for domain DN %s" % presult.domaindn
 589         ctx.local_samdb = presult.samdb
 590         ctx.lp          = presult.lp
 591         ctx.paths       = presult.paths
 592         ctx.names       = presult.names
 593
 594     def join_provision_own_domain(ctx):
 595         '''provision the local SAM'''
 596
 597         # we now operate exclusively on the local database, which
 598         # we need to reopen in order to get the newly created schema
 599         print("Reconnecting to local samdb")
 600         ctx.samdb = SamDB(url=ctx.local_samdb.url,
 601                           session_info=system_session(),
 602                           lp=ctx.local_samdb.lp,
 603                           global_schema=False)
 604         ctx.samdb.set_invocation_id(str(ctx.invocation_id))
 605         ctx.local_samdb = ctx.samdb
 606
 607         print("Finding domain GUID from ncName")
 608         res = ctx.local_samdb.search(base=ctx.partition_dn, scope=ldb.SCOPE_BASE, attrs=['ncName'],
 609                                      controls=["extended_dn:1:1"])
 610         domguid = str(misc.GUID(ldb.Dn(ctx.samdb, res[0]['ncName'][0]).get_extended_component('GUID')))
 611         print("Got domain GUID %s" % domguid)
 612
 613         print("Calling own domain provision")
 614
 615         logger = logging.getLogger("provision")
 616         logger.addHandler(logging.StreamHandler(sys.stdout))
 617
 618         secrets_ldb = Ldb(ctx.paths.secrets, session_info=system_session(), lp=ctx.lp)
 619
 620         presult = provision_fill(ctx.local_samdb, secrets_ldb,
 621                                  logger, ctx.names, ctx.paths, domainsid=security.dom_sid(ctx.domsid),
 622                                  domainguid=domguid,
 623                                  targetdir=ctx.targetdir, samdb_fill=FILL_SUBDOMAIN,
 624                                  machinepass=ctx.acct_pass, serverrole="domain controller",
 625                                  lp=ctx.lp, hostip=ctx.names.hostip, hostip6=ctx.names.hostip6)
 626         print("Provision OK for domain %s" % ctx.names.dnsdomain)
 627
 628
 629     def join_replicate(ctx):
 630         '''replicate the SAM'''
 631
 632         print "Starting replication"
 633         ctx.local_samdb.transaction_start()
 634         try:
 635             source_dsa_invocation_id = misc.GUID(ctx.samdb.get_invocation_id())
 636             if ctx.ntds_guid is None:
 637                 print("Using DS_BIND_GUID_W2K3")
 638                 destination_dsa_guid = misc.GUID(drsuapi.DRSUAPI_DS_BIND_GUID_W2K3)
 639             else:
 640                 destination_dsa_guid = ctx.ntds_guid
 641
 642             if ctx.RODC:
 643                 repl_creds = Credentials()
 644                 repl_creds.guess(ctx.lp)
 645                 repl_creds.set_kerberos_state(DONT_USE_KERBEROS)
 646                 repl_creds.set_username(ctx.samname)
 647                 repl_creds.set_password(ctx.acct_pass)
 648             else:
 649                 repl_creds = ctx.creds
 650
 651             binding_options = "seal"
 652             if int(ctx.lp.get("log level")) >= 5:
 653                 binding_options += ",print"
 654             repl = drs_utils.drs_Replicate(
 655                 "ncacn_ip_tcp:%s[%s]" % (ctx.server, binding_options),
 656                 ctx.lp, repl_creds, ctx.local_samdb)
 657
 658             repl.replicate(ctx.schema_dn, source_dsa_invocation_id,
 659                     destination_dsa_guid, schema=True, rodc=ctx.RODC,
 660                     replica_flags=ctx.replica_flags)
 661             repl.replicate(ctx.config_dn, source_dsa_invocation_id,
 662                     destination_dsa_guid, rodc=ctx.RODC,
 663                     replica_flags=ctx.replica_flags)
 664             if not ctx.subdomain:
 665                 repl.replicate(ctx.base_dn, source_dsa_invocation_id,
 666                                destination_dsa_guid, rodc=ctx.RODC,
 667                                replica_flags=ctx.domain_replica_flags)
 668             if ctx.RODC:
 669                 repl.replicate(ctx.acct_dn, source_dsa_invocation_id,
 670                         destination_dsa_guid,
 671                         exop=drsuapi.DRSUAPI_EXOP_REPL_SECRET, rodc=True)
 672                 repl.replicate(ctx.new_krbtgt_dn, source_dsa_invocation_id,
 673                         destination_dsa_guid,
 674                         exop=drsuapi.DRSUAPI_EXOP_REPL_SECRET, rodc=True)
 675             ctx.repl = repl
 676             ctx.source_dsa_invocation_id = source_dsa_invocation_id
 677             ctx.destination_dsa_guid = destination_dsa_guid
 678
 679             print "Committing SAM database"
 680         except:
 681             ctx.local_samdb.transaction_cancel()
 682             raise
 683         else:
 684             ctx.local_samdb.transaction_commit()
 685
 686
 687     def join_finalise(ctx):
 688         '''finalise the join, mark us synchronised and setup secrets db'''
 689
 690         print "Setting isSynchronized and dsServiceName"
 691         m = ldb.Message()
 692         m.dn = ldb.Dn(ctx.local_samdb, '@ROOTDSE')
 693         m["isSynchronized"] = ldb.MessageElement("TRUE", ldb.FLAG_MOD_REPLACE, "isSynchronized")
 694         m["dsServiceName"] = ldb.MessageElement("<GUID=%s>" % str(ctx.ntds_guid),
 695                                                 ldb.FLAG_MOD_REPLACE, "dsServiceName")
 696         ctx.local_samdb.modify(m)
 697
 698         if ctx.subdomain:
 699             return
 700
 701         secrets_ldb = Ldb(ctx.paths.secrets, session_info=system_session(), lp=ctx.lp)
 702
 703         print "Setting up secrets database"
 704         secretsdb_self_join(secrets_ldb, domain=ctx.domain_name,
 705                             realm=ctx.realm,
 706                             dnsdomain=ctx.dnsdomain,
 707                             netbiosname=ctx.myname,
 708                             domainsid=security.dom_sid(ctx.domsid),
 709                             machinepass=ctx.acct_pass,
 710                             secure_channel_type=ctx.secure_channel_type,
 711                             key_version_number=ctx.key_version_number)
 712
 713     def join_setup_trusts(ctx):
 714         '''provision the local SAM'''
 715
 716         def arcfour_encrypt(key, data):
 717             from Crypto.Cipher import ARC4
 718             c = ARC4.new(key)
 719             return c.encrypt(data)
 720
 721         def string_to_array(string):
 722             blob = [0] * len(string)
 723
 724             for i in range(len(string)):
 725                 blob[i] = ord(string[i])
 726
 727             return blob
 728
 729         print "Setup domain trusts with server %s" % ctx.server
 730         binding_options = ""  # why doesn't signing work gere? w2k8r2 claims no session key
 731         lsaconn = lsa.lsarpc("ncacn_np:%s[%s]" % (ctx.server, binding_options),
 732                              ctx.lp, ctx.creds)
 733
 734         objectAttr = lsa.ObjectAttribute()
 735         objectAttr.sec_qos = lsa.QosInfo()
 736
 737         pol_handle = lsaconn.OpenPolicy2(''.decode('utf-8'),
 738                                          objectAttr, security.SEC_FLAG_MAXIMUM_ALLOWED)
 739
 740         info = lsa.TrustDomainInfoInfoEx()
 741         info.domain_name.string = ctx.dnsdomain
 742         info.netbios_name.string = ctx.domain_name
 743         info.sid = security.dom_sid(ctx.domsid)
 744         info.trust_direction = lsa.LSA_TRUST_DIRECTION_INBOUND | lsa.LSA_TRUST_DIRECTION_OUTBOUND
 745         info.trust_type = lsa.LSA_TRUST_TYPE_UPLEVEL
 746         info.trust_attributes = lsa.LSA_TRUST_ATTRIBUTE_WITHIN_FOREST
 747
 748         try:
 749             oldname = lsa.String()
 750             oldname.string = ctx.dnsdomain
 751             oldinfo = lsaconn.QueryTrustedDomainInfoByName(pol_handle, oldname,
 752                                                            lsa.LSA_TRUSTED_DOMAIN_INFO_FULL_INFO)
 753             print("Removing old trust record for %s (SID %s)" % (ctx.dnsdomain, oldinfo.info_ex.sid))
 754             lsaconn.DeleteTrustedDomain(pol_handle, oldinfo.info_ex.sid)
 755         except RuntimeError:
 756             pass
 757
 758         password_blob = string_to_array(ctx.trustdom_pass.encode('utf-16-le'))
 759
 760         clear_value = drsblobs.AuthInfoClear()
 761         clear_value.size = len(password_blob)
 762         clear_value.password = password_blob
 763
 764         clear_authentication_information = drsblobs.AuthenticationInformation()
 765         clear_authentication_information.LastUpdateTime = samba.unix2nttime(int(time.time()))
 766         clear_authentication_information.AuthType = lsa.TRUST_AUTH_TYPE_CLEAR
 767         clear_authentication_information.AuthInfo = clear_value
 768
 769         authentication_information_array = drsblobs.AuthenticationInformationArray()
 770         authentication_information_array.count = 1
 771         authentication_information_array.array = [clear_authentication_information]
 772
 773         outgoing = drsblobs.trustAuthInOutBlob()
 774         outgoing.count = 1
 775         outgoing.current = authentication_information_array
 776
 777         trustpass = drsblobs.trustDomainPasswords()
 778         confounder = [3] * 512
 779
 780         for i in range(512):
 781             confounder[i] = random.randint(0, 255)
 782
 783         trustpass.confounder = confounder
 784
 785         trustpass.outgoing = outgoing
 786         trustpass.incoming = outgoing
 787
 788         trustpass_blob = ndr_pack(trustpass)
 789
 790         encrypted_trustpass = arcfour_encrypt(lsaconn.session_key, trustpass_blob)
 791
 792         auth_blob = lsa.DATA_BUF2()
 793         auth_blob.size = len(encrypted_trustpass)
 794         auth_blob.data = string_to_array(encrypted_trustpass)
 795
 796         auth_info = lsa.TrustDomainInfoAuthInfoInternal()
 797         auth_info.auth_blob = auth_blob
 798
 799         trustdom_handle = lsaconn.CreateTrustedDomainEx2(pol_handle,
 800                                                          info,
 801                                                          auth_info,
 802                                                          security.SEC_STD_DELETE)
 803
 804         rec = {
 805             "dn" : "cn=%s,cn=system,%s" % (ctx.dnsforest, ctx.base_dn),
 806             "objectclass" : "trustedDomain",
 807             "trustType" : str(info.trust_type),
 808             "trustAttributes" : str(info.trust_attributes),
 809             "trustDirection" : str(info.trust_direction),
 810             "flatname" : ctx.forest_domain_name,
 811             "trustPartner" : ctx.dnsforest,
 812             "trustAuthIncoming" : ndr_pack(outgoing),
 813             "trustAuthOutgoing" : ndr_pack(outgoing)
 814             }
 815         ctx.local_samdb.add(rec)
 816
 817         rec = {
 818             "dn" : "cn=%s$,cn=users,%s" % (ctx.forest_domain_name, ctx.base_dn),
 819             "objectclass" : "user",
 820             "userAccountControl" : str(samba.dsdb.UF_INTERDOMAIN_TRUST_ACCOUNT),
 821             "clearTextPassword" : ctx.trustdom_pass.encode('utf-16-le')
 822             }
 823         ctx.local_samdb.add(rec)
 824
 825
 826     def do_join(ctx):
 827         ctx.cleanup_old_join()
 828         try:
 829             ctx.join_add_objects()
 830             ctx.join_provision()
 831             ctx.join_replicate()
 832             if ctx.subdomain:
 833                 ctx.join_add_objects2()
 834                 ctx.join_provision_own_domain()
 835                 ctx.join_setup_trusts()
 836             ctx.join_finalise()
 837         except Exception:
 838             print "Join failed - cleaning up"
 839             ctx.cleanup_old_join()
 840             raise
 841
 842
 843 def join_RODC(server=None, creds=None, lp=None, site=None, netbios_name=None,
 844               targetdir=None, domain=None, domain_critical_only=False):
 845     """join as a RODC"""
 846
 847     ctx = dc_join(server, creds, lp, site, netbios_name, targetdir, domain)
 848
 849     lp.set("workgroup", ctx.domain_name)
 850     print("workgroup is %s" % ctx.domain_name)
 851
 852     lp.set("realm", ctx.realm)
 853     print("realm is %s" % ctx.realm)
 854
 855     ctx.krbtgt_dn = "CN=krbtgt_%s,CN=Users,%s" % (ctx.myname, ctx.base_dn)
 856
 857     # setup some defaults for accounts that should be replicated to this RODC
 858     ctx.never_reveal_sid = [ "<SID=%s-%s>" % (ctx.domsid, security.DOMAIN_RID_RODC_DENY),
 859                              "<SID=%s>" % security.SID_BUILTIN_ADMINISTRATORS,
 860                              "<SID=%s>" % security.SID_BUILTIN_SERVER_OPERATORS,
 861                              "<SID=%s>" % security.SID_BUILTIN_BACKUP_OPERATORS,
 862                              "<SID=%s>" % security.SID_BUILTIN_ACCOUNT_OPERATORS ]
 863     ctx.reveal_sid = "<SID=%s-%s>" % (ctx.domsid, security.DOMAIN_RID_RODC_ALLOW)
 864
 865     mysid = ctx.get_mysid()
 866     admin_dn = "<SID=%s>" % mysid
 867     ctx.managedby = admin_dn
 868
 869     ctx.userAccountControl = (samba.dsdb.UF_WORKSTATION_TRUST_ACCOUNT |
 870                               samba.dsdb.UF_TRUSTED_TO_AUTHENTICATE_FOR_DELEGATION |
 871                               samba.dsdb.UF_PARTIAL_SECRETS_ACCOUNT)
 872
 873     ctx.SPNs.extend([ "RestrictedKrbHost/%s" % ctx.myname,
 874                       "RestrictedKrbHost/%s" % ctx.dnshostname ])
 875
 876     ctx.connection_dn = "CN=RODC Connection (FRS),%s" % ctx.ntds_dn
 877     ctx.secure_channel_type = misc.SEC_CHAN_RODC
 878     ctx.RODC = True
 879     ctx.replica_flags  =  (drsuapi.DRSUAPI_DRS_INIT_SYNC |
 880                            drsuapi.DRSUAPI_DRS_PER_SYNC |
 881                            drsuapi.DRSUAPI_DRS_GET_ANC |
 882                            drsuapi.DRSUAPI_DRS_NEVER_SYNCED |
 883                            drsuapi.DRSUAPI_DRS_SPECIAL_SECRET_PROCESSING |
 884                            drsuapi.DRSUAPI_DRS_GET_ALL_GROUP_MEMBERSHIP)
 885     ctx.domain_replica_flags = ctx.replica_flags
 886     if domain_critical_only:
 887         ctx.domain_replica_flags |= drsuapi.DRSUAPI_DRS_CRITICAL_ONLY
 888
 889     ctx.do_join()
 890
 891
 892     print "Joined domain %s (SID %s) as an RODC" % (ctx.domain_name, ctx.domsid)
 893
 894
 895 def join_DC(server=None, creds=None, lp=None, site=None, netbios_name=None,
 896             targetdir=None, domain=None, domain_critical_only=False):
 897     """join as a DC"""
 898     ctx = dc_join(server, creds, lp, site, netbios_name, targetdir, domain)
 899
 900     lp.set("workgroup", ctx.domain_name)
 901     print("workgroup is %s" % ctx.domain_name)
 902
 903     lp.set("realm", ctx.realm)
 904     print("realm is %s" % ctx.realm)
 905
 906     ctx.userAccountControl = samba.dsdb.UF_SERVER_TRUST_ACCOUNT | samba.dsdb.UF_TRUSTED_FOR_DELEGATION
 907
 908     ctx.SPNs.append('E3514235-4B06-11D1-AB04-00C04FC2DCD2/$NTDSGUID/%s' % ctx.dnsdomain)
 909     ctx.secure_channel_type = misc.SEC_CHAN_BDC
 910
 911     ctx.replica_flags = (drsuapi.DRSUAPI_DRS_WRIT_REP |
 912                          drsuapi.DRSUAPI_DRS_INIT_SYNC |
 913                          drsuapi.DRSUAPI_DRS_PER_SYNC |
 914                          drsuapi.DRSUAPI_DRS_FULL_SYNC_IN_PROGRESS |
 915                          drsuapi.DRSUAPI_DRS_NEVER_SYNCED)
 916     ctx.domain_replica_flags = ctx.replica_flags
 917     if domain_critical_only:
 918         ctx.domain_replica_flags |= drsuapi.DRSUAPI_DRS_CRITICAL_ONLY
 919
 920     ctx.do_join()
 921     print "Joined domain %s (SID %s) as a DC" % (ctx.domain_name, ctx.domsid)
 922
 923 def join_subdomain(server=None, creds=None, lp=None, site=None, netbios_name=None,
 924                    targetdir=None, parent_domain=None, dnsdomain=None, netbios_domain=None):
 925     """join as a DC"""
 926     ctx = dc_join(server, creds, lp, site, netbios_name, targetdir, parent_domain)
 927     ctx.subdomain = True
 928     ctx.parent_domain_name = ctx.domain_name
 929     ctx.domain_name = netbios_domain
 930     ctx.realm = dnsdomain
 931     ctx.parent_dnsdomain = ctx.dnsdomain
 932     ctx.parent_partition_dn = ctx.get_parent_partition_dn()
 933     ctx.dnsdomain = dnsdomain
 934     ctx.partition_dn = "CN=%s,CN=Partitions,%s" % (ctx.domain_name, ctx.config_dn)
 935     ctx.naming_master = ctx.get_naming_master()
 936     if ctx.naming_master != ctx.server:
 937         print("Reconnecting to naming master %s" % ctx.naming_master)
 938         ctx.server = ctx.naming_master
 939         ctx.samdb = SamDB(url="ldap://%s" % ctx.server,
 940                           session_info=system_session(),
 941                           credentials=ctx.creds, lp=ctx.lp)
 942
 943     ctx.base_dn = samba.dn_from_dns_name(dnsdomain)
 944     ctx.domsid = str(security.random_sid())
 945     ctx.acct_dn = None
 946     ctx.dnshostname = "%s.%s" % (ctx.myname, ctx.dnsdomain)
 947     ctx.trustdom_pass = samba.generate_random_password(128, 128)
 948
 949     ctx.userAccountControl = samba.dsdb.UF_SERVER_TRUST_ACCOUNT | samba.dsdb.UF_TRUSTED_FOR_DELEGATION
 950
 951     ctx.SPNs.append('E3514235-4B06-11D1-AB04-00C04FC2DCD2/$NTDSGUID/%s' % ctx.dnsdomain)
 952     ctx.secure_channel_type = misc.SEC_CHAN_BDC
 953
 954     ctx.replica_flags = (drsuapi.DRSUAPI_DRS_WRIT_REP |
 955                          drsuapi.DRSUAPI_DRS_INIT_SYNC |
 956                          drsuapi.DRSUAPI_DRS_PER_SYNC |
 957                          drsuapi.DRSUAPI_DRS_FULL_SYNC_IN_PROGRESS |
 958                          drsuapi.DRSUAPI_DRS_NEVER_SYNCED)
 959     ctx.domain_replica_flags = ctx.replica_flags
 960
 961     ctx.do_join()
 962     print "Created domain %s (SID %s) as a DC" % (ctx.domain_name, ctx.domsid)