python/samba/provision/sambadns.py

   1 # Unix SMB/CIFS implementation.
   2 # backend code for provisioning DNS for a Samba4 server
   3 #
   4 # Copyright (C) Kai Blin <kai@samba.org> 2011
   5 # Copyright (C) Amitay Isaacs <amitay@gmail.com> 2011
   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 """DNS-related provisioning"""
  22
  23 import os
  24 import uuid
  25 import shutil
  26 import time
  27 import ldb
  28 from base64 import b64encode
  29 import subprocess
  30 import samba
  31 from samba.tdb_util import tdb_copy
  32 from samba.ndr import ndr_pack, ndr_unpack
  33 from samba import setup_file
  34 from samba.dcerpc import dnsp, misc, security
  35 from samba.dsdb import (
  36     DS_DOMAIN_FUNCTION_2000,
  37     DS_DOMAIN_FUNCTION_2003,
  38     DS_DOMAIN_FUNCTION_2008_R2
  39     )
  40 from samba.descriptor import (
  41     get_domain_descriptor,
  42     get_domain_delete_protected1_descriptor,
  43     get_domain_delete_protected2_descriptor,
  44     get_dns_partition_descriptor,
  45     get_dns_forest_microsoft_dns_descriptor,
  46     get_dns_domain_microsoft_dns_descriptor
  47     )
  48 from samba.provision.common import (
  49     setup_path,
  50     setup_add_ldif,
  51     setup_modify_ldif,
  52     setup_ldb,
  53     FILL_FULL,
  54     FILL_SUBDOMAIN,
  55     FILL_NT4SYNC,
  56     FILL_DRS,
  57     )
  58
  59
  60 def get_domainguid(samdb, domaindn):
  61     res = samdb.search(base=domaindn, scope=ldb.SCOPE_BASE, attrs=["objectGUID"])
  62     domainguid =  str(ndr_unpack(misc.GUID, res[0]["objectGUID"][0]))
  63     return domainguid
  64
  65
  66 def get_dnsadmins_sid(samdb, domaindn):
  67     res = samdb.search(base="CN=DnsAdmins,CN=Users,%s" % domaindn, scope=ldb.SCOPE_BASE,
  68                        attrs=["objectSid"])
  69     dnsadmins_sid = ndr_unpack(security.dom_sid, res[0]["objectSid"][0])
  70     return dnsadmins_sid
  71
  72
  73 class ARecord(dnsp.DnssrvRpcRecord):
  74
  75     def __init__(self, ip_addr, serial=1, ttl=900, rank=dnsp.DNS_RANK_ZONE):
  76         super(ARecord, self).__init__()
  77         self.wType = dnsp.DNS_TYPE_A
  78         self.rank = rank
  79         self.dwSerial = serial
  80         self.dwTtlSeconds = ttl
  81         self.data = ip_addr
  82
  83
  84 class AAAARecord(dnsp.DnssrvRpcRecord):
  85
  86     def __init__(self, ip6_addr, serial=1, ttl=900, rank=dnsp.DNS_RANK_ZONE):
  87         super(AAAARecord, self).__init__()
  88         self.wType = dnsp.DNS_TYPE_AAAA
  89         self.rank = rank
  90         self.dwSerial = serial
  91         self.dwTtlSeconds = ttl
  92         self.data = ip6_addr
  93
  94
  95 class CNameRecord(dnsp.DnssrvRpcRecord):
  96
  97     def __init__(self, cname, serial=1, ttl=900, rank=dnsp.DNS_RANK_ZONE):
  98         super(CNameRecord, self).__init__()
  99         self.wType = dnsp.DNS_TYPE_CNAME
 100         self.rank = rank
 101         self.dwSerial = serial
 102         self.dwTtlSeconds = ttl
 103         self.data = cname
 104
 105
 106 class NSRecord(dnsp.DnssrvRpcRecord):
 107
 108     def __init__(self, dns_server, serial=1, ttl=900, rank=dnsp.DNS_RANK_ZONE):
 109         super(NSRecord, self).__init__()
 110         self.wType = dnsp.DNS_TYPE_NS
 111         self.rank = rank
 112         self.dwSerial = serial
 113         self.dwTtlSeconds = ttl
 114         self.data = dns_server
 115
 116
 117 class SOARecord(dnsp.DnssrvRpcRecord):
 118
 119     def __init__(self, mname, rname, serial=1, refresh=900, retry=600,
 120                  expire=86400, minimum=3600, ttl=3600, rank=dnsp.DNS_RANK_ZONE):
 121         super(SOARecord, self).__init__()
 122         self.wType = dnsp.DNS_TYPE_SOA
 123         self.rank = rank
 124         self.dwSerial = serial
 125         self.dwTtlSeconds = ttl
 126         soa = dnsp.soa()
 127         soa.serial = serial
 128         soa.refresh = refresh
 129         soa.retry = retry
 130         soa.expire = expire
 131         soa.mname = mname
 132         soa.rname = rname
 133         self.data = soa
 134
 135
 136 class SRVRecord(dnsp.DnssrvRpcRecord):
 137
 138     def __init__(self, target, port, priority=0, weight=100, serial=1, ttl=900,
 139                 rank=dnsp.DNS_RANK_ZONE):
 140         super(SRVRecord, self).__init__()
 141         self.wType = dnsp.DNS_TYPE_SRV
 142         self.rank = rank
 143         self.dwSerial = serial
 144         self.dwTtlSeconds = ttl
 145         srv = dnsp.srv()
 146         srv.nameTarget = target
 147         srv.wPort = port
 148         srv.wPriority = priority
 149         srv.wWeight = weight
 150         self.data = srv
 151
 152
 153 class TXTRecord(dnsp.DnssrvRpcRecord):
 154
 155     def __init__(self, slist, serial=1, ttl=900, rank=dnsp.DNS_RANK_ZONE):
 156         super(TXTRecord, self).__init__()
 157         self.wType = dnsp.DNS_TYPE_TXT
 158         self.rank = rank
 159         self.dwSerial = serial
 160         self.dwTtlSeconds = ttl
 161         stringlist = dnsp.string_list()
 162         stringlist.count = len(slist)
 163         stringlist.str = slist
 164         self.data = stringlist
 165
 166
 167 class TypeProperty(dnsp.DnsProperty):
 168
 169     def __init__(self, zone_type=dnsp.DNS_ZONE_TYPE_PRIMARY):
 170         super(TypeProperty, self).__init__()
 171         self.wDataLength = 1
 172         self.version = 1
 173         self.id = dnsp.DSPROPERTY_ZONE_TYPE
 174         self.data = zone_type
 175
 176
 177 class AllowUpdateProperty(dnsp.DnsProperty):
 178
 179     def __init__(self, allow_update=dnsp.DNS_ZONE_UPDATE_SECURE):
 180         super(AllowUpdateProperty, self).__init__()
 181         self.wDataLength = 1
 182         self.version = 1
 183         self.id = dnsp.DSPROPERTY_ZONE_ALLOW_UPDATE
 184         self.data = allow_update
 185
 186
 187 class SecureTimeProperty(dnsp.DnsProperty):
 188
 189     def __init__(self, secure_time=0):
 190         super(SecureTimeProperty, self).__init__()
 191         self.wDataLength = 1
 192         self.version = 1
 193         self.id = dnsp.DSPROPERTY_ZONE_SECURE_TIME
 194         self.data = secure_time
 195
 196
 197 class NorefreshIntervalProperty(dnsp.DnsProperty):
 198
 199     def __init__(self, norefresh_interval=0):
 200         super(NorefreshIntervalProperty, self).__init__()
 201         self.wDataLength = 1
 202         self.version = 1
 203         self.id = dnsp.DSPROPERTY_ZONE_NOREFRESH_INTERVAL
 204         self.data = norefresh_interval
 205
 206
 207 class RefreshIntervalProperty(dnsp.DnsProperty):
 208
 209     def __init__(self, refresh_interval=0):
 210         super(RefreshIntervalProperty, self).__init__()
 211         self.wDataLength = 1
 212         self.version = 1
 213         self.id = dnsp.DSPROPERTY_ZONE_REFRESH_INTERVAL
 214         self.data = refresh_interval
 215
 216
 217 class AgingStateProperty(dnsp.DnsProperty):
 218
 219     def __init__(self, aging_enabled=0):
 220         super(AgingStateProperty, self).__init__()
 221         self.wDataLength = 1
 222         self.version = 1
 223         self.id = dnsp.DSPROPERTY_ZONE_AGING_STATE
 224         self.data = aging_enabled
 225
 226
 227 class AgingEnabledTimeProperty(dnsp.DnsProperty):
 228
 229     def __init__(self, next_cycle_hours=0):
 230         super(AgingEnabledTimeProperty, self).__init__()
 231         self.wDataLength = 1
 232         self.version = 1;
 233         self.id = dnsp.DSPROPERTY_ZONE_AGING_ENABLED_TIME
 234         self.data = next_cycle_hours
 235
 236
 237 def setup_dns_partitions(samdb, domainsid, domaindn, forestdn, configdn,
 238                          serverdn, fill_level):
 239     domainzone_dn = "DC=DomainDnsZones,%s" % domaindn
 240     forestzone_dn = "DC=ForestDnsZones,%s" % forestdn
 241     descriptor = get_dns_partition_descriptor(domainsid)
 242
 243     setup_add_ldif(samdb, setup_path("provision_dnszones_partitions.ldif"), {
 244         "ZONE_DN": domainzone_dn,
 245         "SECDESC"      : b64encode(descriptor)
 246         })
 247     if fill_level != FILL_SUBDOMAIN:
 248         setup_add_ldif(samdb, setup_path("provision_dnszones_partitions.ldif"), {
 249             "ZONE_DN": forestzone_dn,
 250             "SECDESC"      : b64encode(descriptor)
 251         })
 252
 253     domainzone_guid = get_domainguid(samdb, domainzone_dn)
 254     forestzone_guid = get_domainguid(samdb, forestzone_dn)
 255
 256     domainzone_guid = str(uuid.uuid4())
 257     forestzone_guid = str(uuid.uuid4())
 258
 259     domainzone_dns = ldb.Dn(samdb, domainzone_dn).canonical_ex_str().strip()
 260     forestzone_dns = ldb.Dn(samdb, forestzone_dn).canonical_ex_str().strip()
 261
 262     protected1_desc = get_domain_delete_protected1_descriptor(domainsid)
 263     protected2_desc = get_domain_delete_protected2_descriptor(domainsid)
 264     setup_add_ldif(samdb, setup_path("provision_dnszones_add.ldif"), {
 265         "ZONE_DN": domainzone_dn,
 266         "ZONE_GUID": domainzone_guid,
 267         "ZONE_DNS": domainzone_dns,
 268         "CONFIGDN": configdn,
 269         "SERVERDN": serverdn,
 270         "LOSTANDFOUND_DESCRIPTOR": b64encode(protected2_desc),
 271         "INFRASTRUCTURE_DESCRIPTOR": b64encode(protected1_desc),
 272         })
 273     setup_modify_ldif(samdb, setup_path("provision_dnszones_modify.ldif"), {
 274         "CONFIGDN": configdn,
 275         "SERVERDN": serverdn,
 276         "ZONE_DN": domainzone_dn,
 277     })
 278
 279     if fill_level != FILL_SUBDOMAIN:
 280         setup_add_ldif(samdb, setup_path("provision_dnszones_add.ldif"), {
 281             "ZONE_DN": forestzone_dn,
 282             "ZONE_GUID": forestzone_guid,
 283             "ZONE_DNS": forestzone_dns,
 284             "CONFIGDN": configdn,
 285             "SERVERDN": serverdn,
 286             "LOSTANDFOUND_DESCRIPTOR": b64encode(protected2_desc),
 287             "INFRASTRUCTURE_DESCRIPTOR": b64encode(protected1_desc),
 288         })
 289         setup_modify_ldif(samdb, setup_path("provision_dnszones_modify.ldif"), {
 290             "CONFIGDN": configdn,
 291             "SERVERDN": serverdn,
 292             "ZONE_DN": forestzone_dn,
 293         })
 294
 295
 296 def add_dns_accounts(samdb, domaindn):
 297     setup_add_ldif(samdb, setup_path("provision_dns_accounts_add.ldif"), {
 298         "DOMAINDN": domaindn,
 299         })
 300
 301
 302 def add_dns_container(samdb, domaindn, prefix, domain_sid, dnsadmins_sid, forest=False):
 303     name_map = {'DnsAdmins': str(dnsadmins_sid)}
 304     if forest is True:
 305         sd_val = get_dns_forest_microsoft_dns_descriptor(domain_sid,
 306                                                          name_map=name_map)
 307     else:
 308         sd_val = get_dns_domain_microsoft_dns_descriptor(domain_sid,
 309                                                          name_map=name_map)
 310     # CN=MicrosoftDNS,<PREFIX>,<DOMAINDN>
 311     msg = ldb.Message(ldb.Dn(samdb, "CN=MicrosoftDNS,%s,%s" % (prefix, domaindn)))
 312     msg["objectClass"] = ["top", "container"]
 313     msg["nTSecurityDescriptor"] = ldb.MessageElement(sd_val, ldb.FLAG_MOD_ADD,
 314         "nTSecurityDescriptor")
 315     samdb.add(msg)
 316
 317
 318 def add_rootservers(samdb, domaindn, prefix):
 319     rootservers = {}
 320     rootservers["a.root-servers.net"] = "198.41.0.4"
 321     rootservers["b.root-servers.net"] = "192.228.79.201"
 322     rootservers["c.root-servers.net"] = "192.33.4.12"
 323     rootservers["d.root-servers.net"] = "128.8.10.90"
 324     rootservers["e.root-servers.net"] = "192.203.230.10"
 325     rootservers["f.root-servers.net"] = "192.5.5.241"
 326     rootservers["g.root-servers.net"] = "192.112.36.4"
 327     rootservers["h.root-servers.net"] = "128.63.2.53"
 328     rootservers["i.root-servers.net"] = "192.36.148.17"
 329     rootservers["j.root-servers.net"] = "192.58.128.30"
 330     rootservers["k.root-servers.net"] = "193.0.14.129"
 331     rootservers["l.root-servers.net"] = "199.7.83.42"
 332     rootservers["m.root-servers.net"] = "202.12.27.33"
 333
 334     rootservers_v6 = {}
 335     rootservers_v6["a.root-servers.net"] = "2001:503:ba3e::2:30"
 336     rootservers_v6["f.root-servers.net"] = "2001:500:2f::f"
 337     rootservers_v6["h.root-servers.net"] = "2001:500:1::803f:235"
 338     rootservers_v6["j.root-servers.net"] = "2001:503:c27::2:30"
 339     rootservers_v6["k.root-servers.net"] = "2001:7fd::1"
 340     rootservers_v6["m.root-servers.net"] = "2001:dc3::35"
 341
 342     container_dn = "DC=RootDNSServers,CN=MicrosoftDNS,%s,%s" % (prefix, domaindn)
 343
 344     # Add DC=RootDNSServers,CN=MicrosoftDNS,<PREFIX>,<DOMAINDN>
 345     msg = ldb.Message(ldb.Dn(samdb, container_dn))
 346     props = []
 347     props.append(ndr_pack(TypeProperty(zone_type=dnsp.DNS_ZONE_TYPE_CACHE)))
 348     props.append(ndr_pack(AllowUpdateProperty(allow_update=dnsp.DNS_ZONE_UPDATE_OFF)))
 349     props.append(ndr_pack(SecureTimeProperty()))
 350     props.append(ndr_pack(NorefreshIntervalProperty()))
 351     props.append(ndr_pack(RefreshIntervalProperty()))
 352     props.append(ndr_pack(AgingStateProperty()))
 353     props.append(ndr_pack(AgingEnabledTimeProperty()))
 354     msg["objectClass"] = ["top", "dnsZone"]
 355     msg["cn"] = ldb.MessageElement("Zone", ldb.FLAG_MOD_ADD, "cn")
 356     msg["dNSProperty"] = ldb.MessageElement(props, ldb.FLAG_MOD_ADD, "dNSProperty")
 357     samdb.add(msg)
 358
 359     # Add DC=@,DC=RootDNSServers,CN=MicrosoftDNS,<PREFIX>,<DOMAINDN>
 360     record = []
 361     for rserver in rootservers:
 362         record.append(ndr_pack(NSRecord(rserver, serial=0, ttl=0, rank=dnsp.DNS_RANK_ROOT_HINT)))
 363
 364     msg = ldb.Message(ldb.Dn(samdb, "DC=@,%s" % container_dn))
 365     msg["objectClass"] = ["top", "dnsNode"]
 366     msg["dnsRecord"] = ldb.MessageElement(record, ldb.FLAG_MOD_ADD, "dnsRecord")
 367     samdb.add(msg)
 368
 369     # Add DC=<rootserver>,DC=RootDNSServers,CN=MicrosoftDNS,<PREFIX>,<DOMAINDN>
 370     for rserver in rootservers:
 371         record = [ndr_pack(ARecord(rootservers[rserver], serial=0, ttl=0, rank=dnsp.DNS_RANK_ROOT_HINT))]
 372         # Add AAAA record as well (How does W2K* add IPv6 records?)
 373         #if rserver in rootservers_v6:
 374         #    record.append(ndr_pack(AAAARecord(rootservers_v6[rserver], serial=0, ttl=0)))
 375         msg = ldb.Message(ldb.Dn(samdb, "DC=%s,%s" % (rserver, container_dn)))
 376         msg["objectClass"] = ["top", "dnsNode"]
 377         msg["dnsRecord"] = ldb.MessageElement(record, ldb.FLAG_MOD_ADD, "dnsRecord")
 378         samdb.add(msg)
 379
 380 def add_at_record(samdb, container_dn, prefix, hostname, dnsdomain, hostip, hostip6):
 381
 382     fqdn_hostname = "%s.%s" % (hostname, dnsdomain)
 383
 384     at_records = []
 385
 386     # SOA record
 387     at_soa_record = SOARecord(fqdn_hostname, "hostmaster.%s" % dnsdomain)
 388     at_records.append(ndr_pack(at_soa_record))
 389
 390     # NS record
 391     at_ns_record = NSRecord(fqdn_hostname)
 392     at_records.append(ndr_pack(at_ns_record))
 393
 394     if hostip is not None:
 395         # A record
 396         at_a_record = ARecord(hostip)
 397         at_records.append(ndr_pack(at_a_record))
 398
 399     if hostip6 is not None:
 400         # AAAA record
 401         at_aaaa_record = AAAARecord(hostip6)
 402         at_records.append(ndr_pack(at_aaaa_record))
 403
 404     msg = ldb.Message(ldb.Dn(samdb, "DC=@,%s" % container_dn))
 405     msg["objectClass"] = ["top", "dnsNode"]
 406     msg["dnsRecord"] = ldb.MessageElement(at_records, ldb.FLAG_MOD_ADD, "dnsRecord")
 407     samdb.add(msg)
 408
 409
 410 def add_srv_record(samdb, container_dn, prefix, host, port):
 411     srv_record = SRVRecord(host, port)
 412     msg = ldb.Message(ldb.Dn(samdb, "%s,%s" % (prefix, container_dn)))
 413     msg["objectClass"] = ["top", "dnsNode"]
 414     msg["dnsRecord"] = ldb.MessageElement(ndr_pack(srv_record), ldb.FLAG_MOD_ADD, "dnsRecord")
 415     samdb.add(msg)
 416
 417
 418 def add_ns_record(samdb, container_dn, prefix, host):
 419     ns_record = NSRecord(host)
 420     msg = ldb.Message(ldb.Dn(samdb, "%s,%s" % (prefix, container_dn)))
 421     msg["objectClass"] = ["top", "dnsNode"]
 422     msg["dnsRecord"] = ldb.MessageElement(ndr_pack(ns_record), ldb.FLAG_MOD_ADD, "dnsRecord")
 423     samdb.add(msg)
 424
 425
 426 def add_ns_glue_record(samdb, container_dn, prefix, host):
 427     ns_record = NSRecord(host, rank=dnsp.DNS_RANK_NS_GLUE)
 428     msg = ldb.Message(ldb.Dn(samdb, "%s,%s" % (prefix, container_dn)))
 429     msg["objectClass"] = ["top", "dnsNode"]
 430     msg["dnsRecord"] = ldb.MessageElement(ndr_pack(ns_record), ldb.FLAG_MOD_ADD, "dnsRecord")
 431     samdb.add(msg)
 432
 433
 434 def add_cname_record(samdb, container_dn, prefix, host):
 435     cname_record = CNameRecord(host)
 436     msg = ldb.Message(ldb.Dn(samdb, "%s,%s" % (prefix, container_dn)))
 437     msg["objectClass"] = ["top", "dnsNode"]
 438     msg["dnsRecord"] = ldb.MessageElement(ndr_pack(cname_record), ldb.FLAG_MOD_ADD, "dnsRecord")
 439     samdb.add(msg)
 440
 441
 442 def add_host_record(samdb, container_dn, prefix, hostip, hostip6):
 443     host_records = []
 444     if hostip:
 445         a_record = ARecord(hostip)
 446         host_records.append(ndr_pack(a_record))
 447     if hostip6:
 448         aaaa_record = AAAARecord(hostip6)
 449         host_records.append(ndr_pack(aaaa_record))
 450     if host_records:
 451         msg = ldb.Message(ldb.Dn(samdb, "%s,%s" % (prefix, container_dn)))
 452         msg["objectClass"] = ["top", "dnsNode"]
 453         msg["dnsRecord"] = ldb.MessageElement(host_records, ldb.FLAG_MOD_ADD, "dnsRecord")
 454         samdb.add(msg)
 455
 456
 457 def add_domain_record(samdb, domaindn, prefix, dnsdomain, domainsid, dnsadmins_sid):
 458     # DC=<DNSDOMAIN>,CN=MicrosoftDNS,<PREFIX>,<DOMAINDN>
 459     sddl = "O:SYG:BAD:AI" \
 460     "(A;;RPWPCRCCDCLCLORCWOWDSDDTSW;;;DA)" \
 461     "(A;;CC;;;AU)" \
 462     "(A;;RPLCLORC;;;WD)" \
 463     "(A;;RPWPCRCCDCLCLORCWOWDSDDTSW;;;SY)" \
 464     "(A;CI;RPWPCRCCDCLCRCWOWDSDDTSW;;;ED)" \
 465     "(A;CIID;RPWPCRCCDCLCRCWOWDSDDTSW;;;%s)" \
 466     "(A;CIID;RPWPCRCCDCLCRCWOWDSDDTSW;;;ED)" \
 467     "(OA;CIID;RPWPCR;91e647de-d96f-4b70-9557-d63ff4f3ccd8;;PS)" \
 468     "(A;CIID;RPWPCRCCDCLCLORCWOWDSDDTSW;;;EA)" \
 469     "(A;CIID;LC;;;RU)" \
 470     "(A;CIID;RPWPCRCCLCLORCWOWDSDSW;;;BA)" \
 471     "S:AI" % dnsadmins_sid
 472     sec = security.descriptor.from_sddl(sddl, domainsid)
 473     props = []
 474     props.append(ndr_pack(TypeProperty()))
 475     props.append(ndr_pack(AllowUpdateProperty()))
 476     props.append(ndr_pack(SecureTimeProperty()))
 477     props.append(ndr_pack(NorefreshIntervalProperty(norefresh_interval=168)))
 478     props.append(ndr_pack(RefreshIntervalProperty(refresh_interval=168)))
 479     props.append(ndr_pack(AgingStateProperty()))
 480     props.append(ndr_pack(AgingEnabledTimeProperty()))
 481     msg = ldb.Message(ldb.Dn(samdb, "DC=%s,CN=MicrosoftDNS,%s,%s" % (dnsdomain, prefix, domaindn)))
 482     msg["objectClass"] = ["top", "dnsZone"]
 483     msg["ntSecurityDescriptor"] = ldb.MessageElement(ndr_pack(sec), ldb.FLAG_MOD_ADD,
 484         "nTSecurityDescriptor")
 485     msg["dNSProperty"] = ldb.MessageElement(props, ldb.FLAG_MOD_ADD, "dNSProperty")
 486     samdb.add(msg)
 487
 488
 489 def add_msdcs_record(samdb, forestdn, prefix, dnsforest):
 490     # DC=_msdcs.<DNSFOREST>,CN=MicrosoftDNS,<PREFIX>,<FORESTDN>
 491     msg = ldb.Message(ldb.Dn(samdb, "DC=_msdcs.%s,CN=MicrosoftDNS,%s,%s" %
 492                                     (dnsforest, prefix, forestdn)))
 493     msg["objectClass"] = ["top", "dnsZone"]
 494     samdb.add(msg)
 495
 496
 497 def add_dc_domain_records(samdb, domaindn, prefix, site, dnsdomain, hostname,
 498         hostip, hostip6):
 499
 500     fqdn_hostname = "%s.%s" % (hostname, dnsdomain)
 501
 502     # Set up domain container - DC=<DNSDOMAIN>,CN=MicrosoftDNS,<PREFIX>,<DOMAINDN>
 503     domain_container_dn = ldb.Dn(samdb, "DC=%s,CN=MicrosoftDNS,%s,%s" %
 504                                     (dnsdomain, prefix, domaindn))
 505
 506     # DC=@ record
 507     add_at_record(samdb, domain_container_dn, "DC=@", hostname, dnsdomain,
 508             hostip, hostip6)
 509
 510     # DC=<HOSTNAME> record
 511     add_host_record(samdb, domain_container_dn, "DC=%s" % hostname, hostip,
 512             hostip6)
 513
 514     # DC=_kerberos._tcp record
 515     add_srv_record(samdb, domain_container_dn, "DC=_kerberos._tcp",
 516             fqdn_hostname, 88)
 517
 518     # DC=_kerberos._tcp.<SITENAME>._sites record
 519     add_srv_record(samdb, domain_container_dn, "DC=_kerberos._tcp.%s._sites" %
 520             site, fqdn_hostname, 88)
 521
 522     # DC=_kerberos._udp record
 523     add_srv_record(samdb, domain_container_dn, "DC=_kerberos._udp",
 524             fqdn_hostname, 88)
 525
 526     # DC=_kpasswd._tcp record
 527     add_srv_record(samdb, domain_container_dn, "DC=_kpasswd._tcp",
 528             fqdn_hostname, 464)
 529
 530     # DC=_kpasswd._udp record
 531     add_srv_record(samdb, domain_container_dn, "DC=_kpasswd._udp",
 532             fqdn_hostname, 464)
 533
 534     # DC=_ldap._tcp record
 535     add_srv_record(samdb, domain_container_dn, "DC=_ldap._tcp", fqdn_hostname,
 536             389)
 537
 538     # DC=_ldap._tcp.<SITENAME>._sites record
 539     add_srv_record(samdb, domain_container_dn, "DC=_ldap._tcp.%s._sites" %
 540             site, fqdn_hostname, 389)
 541
 542     # FIXME: The number of SRV records depend on the various roles this DC has.
 543     #        _gc and _msdcs records are added if the we are the forest dc and not subdomain dc
 544     #
 545     # Assumption: current DC is GC and add all the entries
 546
 547     # DC=_gc._tcp record
 548     add_srv_record(samdb, domain_container_dn, "DC=_gc._tcp", fqdn_hostname,
 549             3268)
 550
 551     # DC=_gc._tcp.<SITENAME>,_sites record
 552     add_srv_record(samdb, domain_container_dn, "DC=_gc._tcp.%s._sites" % site,
 553             fqdn_hostname, 3268)
 554
 555     # DC=_msdcs record
 556     add_ns_glue_record(samdb, domain_container_dn, "DC=_msdcs", fqdn_hostname)
 557
 558     # FIXME: Following entries are added only if DomainDnsZones and ForestDnsZones partitions
 559     #        are created
 560     #
 561     # Assumption: Additional entries won't hurt on os_level = 2000
 562
 563     # DC=_ldap._tcp.<SITENAME>._sites.DomainDnsZones
 564     add_srv_record(samdb, domain_container_dn,
 565             "DC=_ldap._tcp.%s._sites.DomainDnsZones" % site, fqdn_hostname,
 566             389)
 567
 568     # DC=_ldap._tcp.<SITENAME>._sites.ForestDnsZones
 569     add_srv_record(samdb, domain_container_dn,
 570             "DC=_ldap._tcp.%s._sites.ForestDnsZones" % site, fqdn_hostname,
 571             389)
 572
 573     # DC=_ldap._tcp.DomainDnsZones
 574     add_srv_record(samdb, domain_container_dn, "DC=_ldap._tcp.DomainDnsZones",
 575                     fqdn_hostname, 389)
 576
 577     # DC=_ldap._tcp.ForestDnsZones
 578     add_srv_record(samdb, domain_container_dn, "DC=_ldap._tcp.ForestDnsZones",
 579                     fqdn_hostname, 389)
 580
 581     # DC=DomainDnsZones
 582     add_host_record(samdb, domain_container_dn, "DC=DomainDnsZones", hostip,
 583             hostip6)
 584
 585     # DC=ForestDnsZones
 586     add_host_record(samdb, domain_container_dn, "DC=ForestDnsZones", hostip,
 587             hostip6)
 588
 589
 590 def add_dc_msdcs_records(samdb, forestdn, prefix, site, dnsforest, hostname,
 591                             hostip, hostip6, domainguid, ntdsguid):
 592
 593     fqdn_hostname = "%s.%s" % (hostname, dnsforest)
 594
 595     # Set up forest container - DC=<DNSDOMAIN>,CN=MicrosoftDNS,<PREFIX>,<DOMAINDN>
 596     forest_container_dn = ldb.Dn(samdb, "DC=_msdcs.%s,CN=MicrosoftDNS,%s,%s" %
 597                                     (dnsforest, prefix, forestdn))
 598
 599     # DC=@ record
 600     add_at_record(samdb, forest_container_dn, "DC=@", hostname, dnsforest,
 601             None, None)
 602
 603     # DC=_kerberos._tcp.dc record
 604     add_srv_record(samdb, forest_container_dn, "DC=_kerberos._tcp.dc",
 605             fqdn_hostname, 88)
 606
 607     # DC=_kerberos._tcp.<SITENAME>._sites.dc record
 608     add_srv_record(samdb, forest_container_dn,
 609             "DC=_kerberos._tcp.%s._sites.dc" % site, fqdn_hostname, 88)
 610
 611     # DC=_ldap._tcp.dc record
 612     add_srv_record(samdb, forest_container_dn, "DC=_ldap._tcp.dc",
 613             fqdn_hostname, 389)
 614
 615     # DC=_ldap._tcp.<SITENAME>._sites.dc record
 616     add_srv_record(samdb, forest_container_dn, "DC=_ldap._tcp.%s._sites.dc" %
 617             site, fqdn_hostname, 389)
 618
 619     # DC=_ldap._tcp.<SITENAME>._sites.gc record
 620     add_srv_record(samdb, forest_container_dn, "DC=_ldap._tcp.%s._sites.gc" %
 621             site, fqdn_hostname, 3268)
 622
 623     # DC=_ldap._tcp.gc record
 624     add_srv_record(samdb, forest_container_dn, "DC=_ldap._tcp.gc",
 625             fqdn_hostname, 3268)
 626
 627     # DC=_ldap._tcp.pdc record
 628     add_srv_record(samdb, forest_container_dn, "DC=_ldap._tcp.pdc",
 629             fqdn_hostname, 389)
 630
 631     # DC=gc record
 632     add_host_record(samdb, forest_container_dn, "DC=gc", hostip, hostip6)
 633
 634     # DC=_ldap._tcp.<DOMAINGUID>.domains record
 635     add_srv_record(samdb, forest_container_dn,
 636             "DC=_ldap._tcp.%s.domains" % domainguid, fqdn_hostname, 389)
 637
 638     # DC=<NTDSGUID>
 639     add_cname_record(samdb, forest_container_dn, "DC=%s" % ntdsguid,
 640             fqdn_hostname)
 641
 642
 643 def secretsdb_setup_dns(secretsdb, names, private_dir, realm,
 644                         dnsdomain, dns_keytab_path, dnspass, key_version_number):
 645     """Add DNS specific bits to a secrets database.
 646
 647     :param secretsdb: Ldb Handle to the secrets database
 648     :param names: Names shortcut
 649     :param machinepass: Machine password
 650     """
 651     try:
 652         os.unlink(os.path.join(private_dir, dns_keytab_path))
 653     except OSError:
 654         pass
 655
 656     if key_version_number is None:
 657         key_version_number = 1
 658
 659     setup_ldb(secretsdb, setup_path("secrets_dns.ldif"), {
 660             "REALM": realm,
 661             "DNSDOMAIN": dnsdomain,
 662             "DNS_KEYTAB": dns_keytab_path,
 663             "DNSPASS_B64": b64encode(dnspass),
 664             "KEY_VERSION_NUMBER": str(key_version_number),
 665             "HOSTNAME": names.hostname,
 666             "DNSNAME" : '%s.%s' % (
 667                 names.netbiosname.lower(), names.dnsdomain.lower())
 668             })
 669
 670
 671 def create_dns_dir(logger, paths):
 672     """Write out a DNS zone file, from the info in the current database.
 673
 674     :param logger: Logger object
 675     :param paths: paths object
 676     """
 677     dns_dir = os.path.dirname(paths.dns)
 678
 679     try:
 680         shutil.rmtree(dns_dir, True)
 681     except OSError:
 682         pass
 683
 684     os.mkdir(dns_dir, 0770)
 685
 686     if paths.bind_gid is not None:
 687         try:
 688             os.chown(dns_dir, -1, paths.bind_gid)
 689             # chmod needed to cope with umask
 690             os.chmod(dns_dir, 0770)
 691         except OSError:
 692             if not os.environ.has_key('SAMBA_SELFTEST'):
 693                 logger.error("Failed to chown %s to bind gid %u" % (
 694                     dns_dir, paths.bind_gid))
 695
 696
 697 def create_zone_file(lp, logger, paths, targetdir, dnsdomain,
 698                      hostip, hostip6, hostname, realm, domainguid,
 699                      ntdsguid, site):
 700     """Write out a DNS zone file, from the info in the current database.
 701
 702     :param paths: paths object
 703     :param dnsdomain: DNS Domain name
 704     :param domaindn: DN of the Domain
 705     :param hostip: Local IPv4 IP
 706     :param hostip6: Local IPv6 IP
 707     :param hostname: Local hostname
 708     :param realm: Realm name
 709     :param domainguid: GUID of the domain.
 710     :param ntdsguid: GUID of the hosts nTDSDSA record.
 711     """
 712     assert isinstance(domainguid, str)
 713
 714     if hostip6 is not None:
 715         hostip6_base_line = "            IN AAAA    " + hostip6
 716         hostip6_host_line = hostname + "        IN AAAA    " + hostip6
 717         gc_msdcs_ip6_line = "gc._msdcs               IN AAAA    " + hostip6
 718     else:
 719         hostip6_base_line = ""
 720         hostip6_host_line = ""
 721         gc_msdcs_ip6_line = ""
 722
 723     if hostip is not None:
 724         hostip_base_line = "            IN A    " + hostip
 725         hostip_host_line = hostname + "        IN A    " + hostip
 726         gc_msdcs_ip_line = "gc._msdcs               IN A    " + hostip
 727     else:
 728         hostip_base_line = ""
 729         hostip_host_line = ""
 730         gc_msdcs_ip_line = ""
 731
 732     # we need to freeze the zone while we update the contents
 733     if targetdir is None:
 734         rndc = ' '.join(lp.get("rndc command"))
 735         os.system(rndc + " freeze " + lp.get("realm"))
 736
 737     setup_file(setup_path("provision.zone"), paths.dns, {
 738             "HOSTNAME": hostname,
 739             "DNSDOMAIN": dnsdomain,
 740             "REALM": realm,
 741             "HOSTIP_BASE_LINE": hostip_base_line,
 742             "HOSTIP_HOST_LINE": hostip_host_line,
 743             "DOMAINGUID": domainguid,
 744             "DATESTRING": time.strftime("%Y%m%d%H"),
 745             "DEFAULTSITE": site,
 746             "NTDSGUID": ntdsguid,
 747             "HOSTIP6_BASE_LINE": hostip6_base_line,
 748             "HOSTIP6_HOST_LINE": hostip6_host_line,
 749             "GC_MSDCS_IP_LINE": gc_msdcs_ip_line,
 750             "GC_MSDCS_IP6_LINE": gc_msdcs_ip6_line,
 751         })
 752
 753     if paths.bind_gid is not None:
 754         try:
 755             os.chown(paths.dns, -1, paths.bind_gid)
 756             # chmod needed to cope with umask
 757             os.chmod(paths.dns, 0664)
 758         except OSError:
 759             if not os.environ.has_key('SAMBA_SELFTEST'):
 760                 logger.error("Failed to chown %s to bind gid %u" % (
 761                     paths.dns, paths.bind_gid))
 762
 763     if targetdir is None:
 764         os.system(rndc + " unfreeze " + lp.get("realm"))
 765
 766
 767 def create_samdb_copy(samdb, logger, paths, names, domainsid, domainguid):
 768     """Create a copy of samdb and give write permissions to named for dns partitions
 769     """
 770     private_dir = paths.private_dir
 771     samldb_dir = os.path.join(private_dir, "sam.ldb.d")
 772     dns_dir = os.path.dirname(paths.dns)
 773     dns_samldb_dir = os.path.join(dns_dir, "sam.ldb.d")
 774
 775     # Find the partitions and corresponding filenames
 776     partfile = {}
 777     res = samdb.search(base="@PARTITION", scope=ldb.SCOPE_BASE, attrs=["partition"])
 778     for tmp in res[0]["partition"]:
 779         (nc, fname) = tmp.split(':')
 780         partfile[nc.upper()] = fname
 781
 782     # Create empty domain partition
 783     domaindn = names.domaindn.upper()
 784     domainpart_file = os.path.join(dns_dir, partfile[domaindn])
 785     try:
 786         os.mkdir(dns_samldb_dir)
 787         file(domainpart_file, 'w').close()
 788
 789         # Fill the basedn and @OPTION records in domain partition
 790         dom_ldb = samba.Ldb(domainpart_file)
 791         domainguid_line = "objectGUID: %s\n-" % domainguid
 792         descr = b64encode(get_domain_descriptor(domainsid))
 793         setup_add_ldif(dom_ldb, setup_path("provision_basedn.ldif"), {
 794             "DOMAINDN" : names.domaindn,
 795             "DOMAINGUID" : domainguid_line,
 796             "DOMAINSID" : str(domainsid),
 797             "DESCRIPTOR" : descr})
 798         setup_add_ldif(dom_ldb,
 799             setup_path("provision_basedn_options.ldif"), None)
 800     except:
 801         logger.error(
 802             "Failed to setup database for BIND, AD based DNS cannot be used")
 803         raise
 804     del partfile[domaindn]
 805
 806     # Link dns partitions and metadata
 807     domainzonedn = "DC=DOMAINDNSZONES,%s" % names.domaindn.upper()
 808     forestzonedn = "DC=FORESTDNSZONES,%s" % names.rootdn.upper()
 809     domainzone_file = partfile[domainzonedn]
 810     forestzone_file = partfile[forestzonedn]
 811     metadata_file = "metadata.tdb"
 812     try:
 813         os.link(os.path.join(samldb_dir, metadata_file),
 814             os.path.join(dns_samldb_dir, metadata_file))
 815         os.link(os.path.join(private_dir, domainzone_file),
 816             os.path.join(dns_dir, domainzone_file))
 817         os.link(os.path.join(private_dir, forestzone_file),
 818             os.path.join(dns_dir, forestzone_file))
 819     except OSError:
 820         logger.error(
 821             "Failed to setup database for BIND, AD based DNS cannot be used")
 822         raise
 823     del partfile[domainzonedn]
 824     del partfile[forestzonedn]
 825
 826     # Copy root, config, schema partitions (and any other if any)
 827     # Since samdb is open in the current process, copy them in a child process
 828     try:
 829         tdb_copy(os.path.join(private_dir, "sam.ldb"),
 830                  os.path.join(dns_dir, "sam.ldb"))
 831         for nc in partfile:
 832             pfile = partfile[nc]
 833             tdb_copy(os.path.join(private_dir, pfile),
 834                      os.path.join(dns_dir, pfile))
 835     except:
 836         logger.error(
 837             "Failed to setup database for BIND, AD based DNS cannot be used")
 838         raise
 839
 840     # Give bind read/write permissions dns partitions
 841     if paths.bind_gid is not None:
 842         try:
 843             os.chown(samldb_dir, -1, paths.bind_gid)
 844             os.chmod(samldb_dir, 0750)
 845
 846             for dirname, dirs, files in os.walk(dns_dir):
 847                 for d in dirs:
 848                     dpath = os.path.join(dirname, d)
 849                     os.chown(dpath, -1, paths.bind_gid)
 850                     os.chmod(dpath, 0770)
 851                 for f in files:
 852                     if f.endswith('.ldb') or f.endswith('.tdb'):
 853                         fpath = os.path.join(dirname, f)
 854                         os.chown(fpath, -1, paths.bind_gid)
 855                         os.chmod(fpath, 0660)
 856         except OSError:
 857             if not os.environ.has_key('SAMBA_SELFTEST'):
 858                 logger.error(
 859                     "Failed to set permissions to sam.ldb* files, fix manually")
 860     else:
 861         if not os.environ.has_key('SAMBA_SELFTEST'):
 862             logger.warning("""Unable to find group id for BIND,
 863                 set permissions to sam.ldb* files manually""")
 864
 865
 866 def create_dns_update_list(lp, logger, paths):
 867     """Write out a dns_update_list file"""
 868     # note that we use no variable substitution on this file
 869     # the substitution is done at runtime by samba_dnsupdate, samba_spnupdate
 870     setup_file(setup_path("dns_update_list"), paths.dns_update_list, None)
 871     setup_file(setup_path("spn_update_list"), paths.spn_update_list, None)
 872
 873
 874 def create_named_conf(paths, realm, dnsdomain, dns_backend, logger):
 875     """Write out a file containing zone statements suitable for inclusion in a
 876     named.conf file (including GSS-TSIG configuration).
 877
 878     :param paths: all paths
 879     :param realm: Realm name
 880     :param dnsdomain: DNS Domain name
 881     :param dns_backend: DNS backend type
 882     :param keytab_name: File name of DNS keytab file
 883     :param logger: Logger object
 884     """
 885
 886     # TODO: This really should have been done as a top level import.
 887     # It is done here to avoid a depencency loop.  That is, we move
 888     # ProvisioningError to another file, and have all the provision
 889     # scripts import it from there.
 890
 891     from samba.provision import ProvisioningError
 892
 893     if dns_backend == "BIND9_FLATFILE":
 894         setup_file(setup_path("named.conf"), paths.namedconf, {
 895                     "DNSDOMAIN": dnsdomain,
 896                     "REALM": realm,
 897                     "ZONE_FILE": paths.dns,
 898                     "REALM_WC": "*." + ".".join(realm.split(".")[1:]),
 899                     "NAMED_CONF": paths.namedconf,
 900                     "NAMED_CONF_UPDATE": paths.namedconf_update
 901                     })
 902
 903         setup_file(setup_path("named.conf.update"), paths.namedconf_update)
 904
 905     elif dns_backend == "BIND9_DLZ":
 906         bind_info = subprocess.Popen(['named -V'], shell=True,
 907                                      stdout=subprocess.PIPE,
 908                                      stderr=subprocess.STDOUT,
 909                                      cwd='.').communicate()[0]
 910         bind98 = '#'
 911         bind99 = '#'
 912         if bind_info.upper().find('BIND 9.8') != -1:
 913             bind98 = ''
 914         elif bind_info.upper().find('BIND 9.9') != -1:
 915             bind99 = ''
 916         elif bind_info.upper().find('BIND 9.7') != -1:
 917             raise ProvisioningError("DLZ option incompatible with BIND 9.7.")
 918         else:
 919             logger.warning("BIND version unknown, please modify %s manually." % paths.namedconf)
 920         setup_file(setup_path("named.conf.dlz"), paths.namedconf, {
 921                     "NAMED_CONF": paths.namedconf,
 922                     "MODULESDIR" : samba.param.modules_dir(),
 923                     "BIND98" : bind98,
 924                     "BIND99" : bind99
 925                     })
 926
 927
 928 def create_named_txt(path, realm, dnsdomain, dnsname, private_dir,
 929     keytab_name):
 930     """Write out a file containing zone statements suitable for inclusion in a
 931     named.conf file (including GSS-TSIG configuration).
 932
 933     :param path: Path of the new named.conf file.
 934     :param realm: Realm name
 935     :param dnsdomain: DNS Domain name
 936     :param private_dir: Path to private directory
 937     :param keytab_name: File name of DNS keytab file
 938     """
 939     setup_file(setup_path("named.txt"), path, {
 940             "DNSDOMAIN": dnsdomain,
 941             "DNSNAME" : dnsname,
 942             "REALM": realm,
 943             "DNS_KEYTAB": keytab_name,
 944             "DNS_KEYTAB_ABS": os.path.join(private_dir, keytab_name),
 945             "PRIVATE_DIR": private_dir
 946         })
 947
 948
 949 def is_valid_dns_backend(dns_backend):
 950     return dns_backend in ("BIND9_FLATFILE", "BIND9_DLZ", "SAMBA_INTERNAL", "NONE")
 951
 952
 953 def is_valid_os_level(os_level):
 954     return DS_DOMAIN_FUNCTION_2000 <= os_level <= DS_DOMAIN_FUNCTION_2008_R2
 955
 956
 957 def create_dns_legacy(samdb, domainsid, forestdn, dnsadmins_sid):
 958     # Set up MicrosoftDNS container
 959     add_dns_container(samdb, forestdn, "CN=System", domainsid, dnsadmins_sid)
 960     # Add root servers
 961     add_rootservers(samdb, forestdn, "CN=System")
 962
 963
 964 def fill_dns_data_legacy(samdb, domainsid, forestdn, dnsdomain, site, hostname,
 965                          hostip, hostip6, dnsadmins_sid):
 966     # Add domain record
 967     add_domain_record(samdb, forestdn, "CN=System", dnsdomain, domainsid,
 968                       dnsadmins_sid)
 969
 970     # Add DNS records for a DC in domain
 971     add_dc_domain_records(samdb, forestdn, "CN=System", site, dnsdomain,
 972                           hostname, hostip, hostip6)
 973
 974
 975 def create_dns_partitions(samdb, domainsid, names, domaindn, forestdn,
 976                           dnsadmins_sid, fill_level):
 977     # Set up additional partitions (DomainDnsZones, ForstDnsZones)
 978     setup_dns_partitions(samdb, domainsid, domaindn, forestdn,
 979                         names.configdn, names.serverdn, fill_level)
 980
 981     # Set up MicrosoftDNS containers
 982     add_dns_container(samdb, domaindn, "DC=DomainDnsZones", domainsid,
 983                       dnsadmins_sid)
 984     if fill_level != FILL_SUBDOMAIN:
 985         add_dns_container(samdb, forestdn, "DC=ForestDnsZones", domainsid,
 986                           dnsadmins_sid, forest=True)
 987
 988
 989 def fill_dns_data_partitions(samdb, domainsid, site, domaindn, forestdn,
 990                              dnsdomain, dnsforest, hostname, hostip, hostip6,
 991                              domainguid, ntdsguid, dnsadmins_sid, autofill=True,
 992                              fill_level=FILL_FULL):
 993     """Fill data in various AD partitions
 994
 995     :param samdb: LDB object connected to sam.ldb file
 996     :param domainsid: Domain SID (as dom_sid object)
 997     :param site: Site name to create hostnames in
 998     :param domaindn: DN of the domain
 999     :param forestdn: DN of the forest
1000     :param dnsdomain: DNS name of the domain
1001     :param dnsforest: DNS name of the forest
1002     :param hostname: Host name of this DC
1003     :param hostip: IPv4 addresses
1004     :param hostip6: IPv6 addresses
1005     :param domainguid: Domain GUID
1006     :param ntdsguid: NTDS GUID
1007     :param dnsadmins_sid: SID for DnsAdmins group
1008     :param autofill: Create DNS records (using fixed template)
1009     """
1010
1011     ##### Set up DC=DomainDnsZones,<DOMAINDN>
1012     # Add rootserver records
1013     add_rootservers(samdb, domaindn, "DC=DomainDnsZones")
1014
1015     # Add domain record
1016     add_domain_record(samdb, domaindn, "DC=DomainDnsZones", dnsdomain,
1017                       domainsid, dnsadmins_sid)
1018
1019     # Add DNS records for a DC in domain
1020     if autofill:
1021         add_dc_domain_records(samdb, domaindn, "DC=DomainDnsZones", site,
1022                               dnsdomain, hostname, hostip, hostip6)
1023
1024     if fill_level != FILL_SUBDOMAIN:
1025         ##### Set up DC=ForestDnsZones,<FORESTDN>
1026         # Add _msdcs record
1027         add_msdcs_record(samdb, forestdn, "DC=ForestDnsZones", dnsforest)
1028
1029         # Add DNS records for a DC in forest
1030         if autofill:
1031             add_dc_msdcs_records(samdb, forestdn, "DC=ForestDnsZones", site,
1032                                  dnsforest, hostname, hostip, hostip6,
1033                                  domainguid, ntdsguid)
1034
1035
1036 def setup_ad_dns(samdb, secretsdb, domainsid, names, paths, lp, logger,
1037         dns_backend, os_level, site, dnspass=None, hostip=None, hostip6=None,
1038         targetdir=None, fill_level=FILL_FULL):
1039     """Provision DNS information (assuming GC role)
1040
1041     :param samdb: LDB object connected to sam.ldb file
1042     :param secretsdb: LDB object connected to secrets.ldb file
1043     :param domainsid: Domain SID (as dom_sid object)
1044     :param names: Names shortcut
1045     :param paths: Paths shortcut
1046     :param lp: Loadparm object
1047     :param logger: Logger object
1048     :param dns_backend: Type of DNS backend
1049     :param os_level: Functional level (treated as os level)
1050     :param site: Site to create hostnames in
1051     :param dnspass: Password for bind's DNS account
1052     :param hostip: IPv4 address
1053     :param hostip6: IPv6 address
1054     :param targetdir: Target directory for creating DNS-related files for BIND9
1055     """
1056
1057     if not is_valid_dns_backend(dns_backend):
1058         raise Exception("Invalid dns backend: %r" % dns_backend)
1059
1060     if not is_valid_os_level(os_level):
1061         raise Exception("Invalid os level: %r" % os_level)
1062
1063     if dns_backend == "NONE":
1064         logger.info("No DNS backend set, not configuring DNS")
1065         return
1066
1067     # Add dns accounts (DnsAdmins, DnsUpdateProxy) in domain
1068     logger.info("Adding DNS accounts")
1069     add_dns_accounts(samdb, names.domaindn)
1070
1071     # If dns_backend is BIND9_FLATFILE
1072     #   Populate only CN=MicrosoftDNS,CN=System,<DOMAINDN>
1073     #
1074     # If dns_backend is SAMBA_INTERNAL or BIND9_DLZ
1075     #   Populate DNS partitions
1076
1077     # If os_level < 2003 (DS_DOMAIN_FUNCTION_2000)
1078     #   All dns records are in CN=MicrosoftDNS,CN=System,<DOMAINDN>
1079     #
1080     # If os_level >= 2003 (DS_DOMAIN_FUNCTION_2003, DS_DOMAIN_FUNCTION_2008,
1081     #                        DS_DOMAIN_FUNCTION_2008_R2)
1082     #   Root server records are in CN=MicrosoftDNS,CN=System,<DOMAINDN>
1083     #   Domain records are in CN=MicrosoftDNS,CN=System,<DOMAINDN>
1084     #   Domain records are in CN=MicrosoftDNS,DC=DomainDnsZones,<DOMAINDN>
1085     #   Forest records are in CN=MicrosoftDNS,DC=ForestDnsZones,<FORESTDN>
1086     domaindn = names.domaindn
1087     forestdn = samdb.get_root_basedn().get_linearized()
1088
1089     dnsdomain = names.dnsdomain.lower()
1090     dnsforest = dnsdomain
1091
1092     hostname = names.netbiosname.lower()
1093
1094     dnsadmins_sid = get_dnsadmins_sid(samdb, domaindn)
1095     domainguid = get_domainguid(samdb, domaindn)
1096
1097     # Create CN=System
1098     logger.info("Creating CN=MicrosoftDNS,CN=System,%s" % domaindn)
1099     create_dns_legacy(samdb, domainsid, domaindn, dnsadmins_sid)
1100
1101     if os_level == DS_DOMAIN_FUNCTION_2000:
1102         # Populating legacy dns
1103         logger.info("Populating CN=MicrosoftDNS,CN=System,%s" % domaindn)
1104         fill_dns_data_legacy(samdb, domainsid, domaindn, dnsdomain, site,
1105                              hostname, hostip, hostip6, dnsadmins_sid)
1106
1107     elif dns_backend in ("SAMBA_INTERNAL", "BIND9_DLZ") and \
1108             os_level >= DS_DOMAIN_FUNCTION_2003:
1109
1110         # Create DNS partitions
1111         logger.info("Creating DomainDnsZones and ForestDnsZones partitions")
1112         create_dns_partitions(samdb, domainsid, names, domaindn, forestdn,
1113                               dnsadmins_sid, fill_level)
1114
1115         # Populating dns partitions
1116         logger.info("Populating DomainDnsZones and ForestDnsZones partitions")
1117         fill_dns_data_partitions(samdb, domainsid, site, domaindn, forestdn,
1118                                  dnsdomain, dnsforest, hostname, hostip, hostip6,
1119                                  domainguid, names.ntdsguid, dnsadmins_sid,
1120                                  fill_level=fill_level)
1121
1122     if dns_backend.startswith("BIND9_"):
1123         setup_bind9_dns(samdb, secretsdb, domainsid, names, paths, lp, logger,
1124                         dns_backend, os_level, site=site, dnspass=dnspass, hostip=hostip,
1125                         hostip6=hostip6, targetdir=targetdir)
1126
1127
1128 def setup_bind9_dns(samdb, secretsdb, domainsid, names, paths, lp, logger,
1129         dns_backend, os_level, site=None, dnspass=None, hostip=None,
1130         hostip6=None, targetdir=None, key_version_number=None):
1131     """Provision DNS information (assuming BIND9 backend in DC role)
1132
1133     :param samdb: LDB object connected to sam.ldb file
1134     :param secretsdb: LDB object connected to secrets.ldb file
1135     :param domainsid: Domain SID (as dom_sid object)
1136     :param names: Names shortcut
1137     :param paths: Paths shortcut
1138     :param lp: Loadparm object
1139     :param logger: Logger object
1140     :param dns_backend: Type of DNS backend
1141     :param os_level: Functional level (treated as os level)
1142     :param site: Site to create hostnames in
1143     :param dnspass: Password for bind's DNS account
1144     :param hostip: IPv4 address
1145     :param hostip6: IPv6 address
1146     :param targetdir: Target directory for creating DNS-related files for BIND9
1147     """
1148
1149     if (not is_valid_dns_backend(dns_backend) or
1150         not dns_backend.startswith("BIND9_")):
1151         raise Exception("Invalid dns backend: %r" % dns_backend)
1152
1153     if not is_valid_os_level(os_level):
1154         raise Exception("Invalid os level: %r" % os_level)
1155
1156     domaindn = names.domaindn
1157
1158     domainguid = get_domainguid(samdb, domaindn)
1159
1160     secretsdb_setup_dns(secretsdb, names,
1161                         paths.private_dir, realm=names.realm,
1162                         dnsdomain=names.dnsdomain,
1163                         dns_keytab_path=paths.dns_keytab, dnspass=dnspass,
1164                         key_version_number=key_version_number)
1165
1166     create_dns_dir(logger, paths)
1167
1168     if dns_backend == "BIND9_FLATFILE":
1169         create_zone_file(lp, logger, paths, targetdir, site=site,
1170                          dnsdomain=names.dnsdomain, hostip=hostip,
1171                          hostip6=hostip6, hostname=names.hostname,
1172                          realm=names.realm, domainguid=domainguid,
1173                          ntdsguid=names.ntdsguid)
1174
1175     if dns_backend == "BIND9_DLZ" and os_level >= DS_DOMAIN_FUNCTION_2003:
1176         create_samdb_copy(samdb, logger, paths, names, domainsid, domainguid)
1177
1178     create_named_conf(paths, realm=names.realm,
1179                       dnsdomain=names.dnsdomain, dns_backend=dns_backend,
1180                       logger=logger)
1181
1182     create_named_txt(paths.namedtxt,
1183                      realm=names.realm, dnsdomain=names.dnsdomain,
1184                      dnsname = "%s.%s" % (names.hostname, names.dnsdomain),
1185                      private_dir=paths.private_dir,
1186                      keytab_name=paths.dns_keytab)
1187     logger.info("See %s for an example configuration include file for BIND",
1188                 paths.namedconf)
1189     logger.info("and %s for further documentation required for secure DNS "
1190                 "updates", paths.namedtxt)