source3/libsmb/dsgetdcname.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    dsgetdcname
   5
   6    Copyright (C) Gerald Carter 2006
   7    Copyright (C) Guenther Deschner 2007-2008
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "includes.h"
  24
  25 #define DSGETDCNAME_FMT "DSGETDCNAME/DOMAIN/%s"
  26 /* 15 minutes */
  27 #define DSGETDCNAME_CACHE_TTL   60*15
  28
  29 struct ip_service_name {
  30         struct sockaddr_storage ss;
  31         unsigned port;
  32         const char *hostname;
  33 };
  34
  35 static NTSTATUS make_dc_info_from_cldap_reply(TALLOC_CTX *mem_ctx,
  36                                               uint32_t flags,
  37                                               struct sockaddr_storage *ss,
  38                                               uint32_t nt_version,
  39                                               union nbt_cldap_netlogon *r,
  40                                               struct netr_DsRGetDCNameInfo **info);
  41
  42 /****************************************************************
  43 ****************************************************************/
  44
  45 void debug_dsdcinfo_flags(int lvl, uint32_t flags)
  46 {
  47         DEBUG(lvl,("debug_dsdcinfo_flags: 0x%08x\n\t", flags));
  48
  49         if (flags & DS_FORCE_REDISCOVERY)
  50                 DEBUGADD(lvl,("DS_FORCE_REDISCOVERY "));
  51         if (flags & 0x000000002)
  52                 DEBUGADD(lvl,("0x00000002 "));
  53         if (flags & 0x000000004)
  54                 DEBUGADD(lvl,("0x00000004 "));
  55         if (flags & 0x000000008)
  56                 DEBUGADD(lvl,("0x00000008 "));
  57         if (flags & DS_DIRECTORY_SERVICE_REQUIRED)
  58                 DEBUGADD(lvl,("DS_DIRECTORY_SERVICE_REQUIRED "));
  59         if (flags & DS_DIRECTORY_SERVICE_PREFERRED)
  60                 DEBUGADD(lvl,("DS_DIRECTORY_SERVICE_PREFERRED "));
  61         if (flags & DS_GC_SERVER_REQUIRED)
  62                 DEBUGADD(lvl,("DS_GC_SERVER_REQUIRED "));
  63         if (flags & DS_PDC_REQUIRED)
  64                 DEBUGADD(lvl,("DS_PDC_REQUIRED "));
  65         if (flags & DS_BACKGROUND_ONLY)
  66                 DEBUGADD(lvl,("DS_BACKGROUND_ONLY "));
  67         if (flags & DS_IP_REQUIRED)
  68                 DEBUGADD(lvl,("DS_IP_REQUIRED "));
  69         if (flags & DS_KDC_REQUIRED)
  70                 DEBUGADD(lvl,("DS_KDC_REQUIRED "));
  71         if (flags & DS_TIMESERV_REQUIRED)
  72                 DEBUGADD(lvl,("DS_TIMESERV_REQUIRED "));
  73         if (flags & DS_WRITABLE_REQUIRED)
  74                 DEBUGADD(lvl,("DS_WRITABLE_REQUIRED "));
  75         if (flags & DS_GOOD_TIMESERV_PREFERRED)
  76                 DEBUGADD(lvl,("DS_GOOD_TIMESERV_PREFERRED "));
  77         if (flags & DS_AVOID_SELF)
  78                 DEBUGADD(lvl,("DS_AVOID_SELF "));
  79         if (flags & DS_ONLY_LDAP_NEEDED)
  80                 DEBUGADD(lvl,("DS_ONLY_LDAP_NEEDED "));
  81         if (flags & DS_IS_FLAT_NAME)
  82                 DEBUGADD(lvl,("DS_IS_FLAT_NAME "));
  83         if (flags & DS_IS_DNS_NAME)
  84                 DEBUGADD(lvl,("DS_IS_DNS_NAME "));
  85         if (flags & 0x00040000)
  86                 DEBUGADD(lvl,("0x00040000 "));
  87         if (flags & 0x00080000)
  88                 DEBUGADD(lvl,("0x00080000 "));
  89         if (flags & 0x00100000)
  90                 DEBUGADD(lvl,("0x00100000 "));
  91         if (flags & 0x00200000)
  92                 DEBUGADD(lvl,("0x00200000 "));
  93         if (flags & 0x00400000)
  94                 DEBUGADD(lvl,("0x00400000 "));
  95         if (flags & 0x00800000)
  96                 DEBUGADD(lvl,("0x00800000 "));
  97         if (flags & 0x01000000)
  98                 DEBUGADD(lvl,("0x01000000 "));
  99         if (flags & 0x02000000)
 100                 DEBUGADD(lvl,("0x02000000 "));
 101         if (flags & 0x04000000)
 102                 DEBUGADD(lvl,("0x04000000 "));
 103         if (flags & 0x08000000)
 104                 DEBUGADD(lvl,("0x08000000 "));
 105         if (flags & 0x10000000)
 106                 DEBUGADD(lvl,("0x10000000 "));
 107         if (flags & 0x20000000)
 108                 DEBUGADD(lvl,("0x20000000 "));
 109         if (flags & DS_RETURN_DNS_NAME)
 110                 DEBUGADD(lvl,("DS_RETURN_DNS_NAME "));
 111         if (flags & DS_RETURN_FLAT_NAME)
 112                 DEBUGADD(lvl,("DS_RETURN_FLAT_NAME "));
 113         if (flags)
 114                 DEBUGADD(lvl,("\n"));
 115 }
 116
 117 /****************************************************************
 118 ****************************************************************/
 119
 120 static char *dsgetdcname_cache_key(TALLOC_CTX *mem_ctx, const char *domain)
 121 {
 122         if (!mem_ctx || !domain) {
 123                 return NULL;
 124         }
 125
 126         return talloc_asprintf_strupper_m(mem_ctx, DSGETDCNAME_FMT, domain);
 127 }
 128
 129 /****************************************************************
 130 ****************************************************************/
 131
 132 static NTSTATUS dsgetdcname_cache_delete(TALLOC_CTX *mem_ctx,
 133                                         const char *domain_name)
 134 {
 135         char *key;
 136
 137         if (!gencache_init()) {
 138                 return NT_STATUS_INTERNAL_DB_ERROR;
 139         }
 140
 141         key = dsgetdcname_cache_key(mem_ctx, domain_name);
 142         if (!key) {
 143                 return NT_STATUS_NO_MEMORY;
 144         }
 145
 146         if (!gencache_del(key)) {
 147                 return NT_STATUS_UNSUCCESSFUL;
 148         }
 149
 150         return NT_STATUS_OK;
 151 }
 152
 153 /****************************************************************
 154 ****************************************************************/
 155
 156 static NTSTATUS dsgetdcname_cache_store(TALLOC_CTX *mem_ctx,
 157                                         const char *domain_name,
 158                                         const DATA_BLOB *blob)
 159 {
 160         time_t expire_time;
 161         char *key;
 162         bool ret = false;
 163
 164         if (!gencache_init()) {
 165                 return NT_STATUS_INTERNAL_DB_ERROR;
 166         }
 167
 168         key = dsgetdcname_cache_key(mem_ctx, domain_name);
 169         if (!key) {
 170                 return NT_STATUS_NO_MEMORY;
 171         }
 172
 173         expire_time = time(NULL) + DSGETDCNAME_CACHE_TTL;
 174
 175         if (gencache_lock_entry(key) != 0) {
 176                 return NT_STATUS_LOCK_NOT_GRANTED;
 177         }
 178
 179         ret = gencache_set_data_blob(key, blob, expire_time);
 180
 181         gencache_unlock_entry(key);
 182
 183         return ret ? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 184 }
 185
 186 /****************************************************************
 187 ****************************************************************/
 188
 189 #define SET_STRING(x) \
 190         talloc_strdup(mem_ctx, x); \
 191         NT_STATUS_HAVE_NO_MEMORY(x);
 192
 193 static NTSTATUS map_logon29_from_cldap_reply(TALLOC_CTX *mem_ctx,
 194                                              uint32_t flags,
 195                                              struct sockaddr_storage *ss,
 196                                              uint32_t nt_version,
 197                                              union nbt_cldap_netlogon *r,
 198                                              struct nbt_cldap_netlogon_29 *p)
 199 {
 200         char addr[INET6_ADDRSTRLEN];
 201
 202         ZERO_STRUCTP(p);
 203
 204         print_sockaddr(addr, sizeof(addr), ss);
 205         p->dc_sock_addr_size = 0x10;
 206         p->dc_sock_addr.sa_family = 2;
 207         p->dc_sock_addr.pdc_ip = talloc_strdup(mem_ctx, addr);
 208
 209         switch (nt_version & 0x0000001f) {
 210                 case 0:
 211                         return NT_STATUS_INVALID_PARAMETER;
 212                 case 1:
 213                 case 16:
 214                 case 17:
 215                         p->pdc_name     = SET_STRING(r->logon1.pdc_name);
 216                         p->domain       = SET_STRING(r->logon1.domain_name);
 217
 218                         if (flags & DS_PDC_REQUIRED) {
 219                                 p->server_type = NBT_SERVER_WRITABLE |
 220                                                  NBT_SERVER_PDC;
 221                         }
 222                         break;
 223                 case 2:
 224                 case 3:
 225                 case 18:
 226                 case 19:
 227                         p->pdc_name     = SET_STRING(r->logon3.pdc_name);
 228                         p->domain       = SET_STRING(r->logon3.domain_name);
 229                         p->pdc_dns_name = SET_STRING(r->logon3.pdc_dns_name);
 230                         p->dns_domain   = SET_STRING(r->logon3.dns_domain);
 231                         p->server_type  = r->logon3.server_type;
 232                         p->forest       = SET_STRING(r->logon3.forest);
 233                         p->domain_uuid  = r->logon3.domain_uuid;
 234
 235                         break;
 236                 case 4:
 237                 case 5:
 238                 case 6:
 239                 case 7:
 240                         p->pdc_name     = SET_STRING(r->logon5.pdc_name);
 241                         p->domain       = SET_STRING(r->logon5.domain);
 242                         p->pdc_dns_name = SET_STRING(r->logon5.pdc_dns_name);
 243                         p->dns_domain   = SET_STRING(r->logon5.dns_domain);
 244                         p->server_type  = r->logon5.server_type;
 245                         p->forest       = SET_STRING(r->logon5.forest);
 246                         p->domain_uuid  = r->logon5.domain_uuid;
 247                         p->server_site  = SET_STRING(r->logon5.server_site);
 248                         p->client_site  = SET_STRING(r->logon5.client_site);
 249
 250                         break;
 251                 case 8:
 252                 case 9:
 253                 case 10:
 254                 case 11:
 255                 case 12:
 256                 case 13:
 257                 case 14:
 258                 case 15:
 259                         p->pdc_name     = SET_STRING(r->logon13.pdc_name);
 260                         p->domain       = SET_STRING(r->logon13.domain);
 261                         p->pdc_dns_name = SET_STRING(r->logon13.pdc_dns_name);
 262                         p->dns_domain   = SET_STRING(r->logon13.dns_domain);
 263                         p->server_type  = r->logon13.server_type;
 264                         p->forest       = SET_STRING(r->logon13.forest);
 265                         p->domain_uuid  = r->logon13.domain_uuid;
 266                         p->server_site  = SET_STRING(r->logon13.server_site);
 267                         p->client_site  = SET_STRING(r->logon13.client_site);
 268
 269                         break;
 270                 case 20:
 271                 case 21:
 272                 case 22:
 273                 case 23:
 274                 case 24:
 275                 case 25:
 276                 case 26:
 277                 case 27:
 278                 case 28:
 279                         p->pdc_name     = SET_STRING(r->logon15.pdc_name);
 280                         p->domain       = SET_STRING(r->logon15.domain);
 281                         p->pdc_dns_name = SET_STRING(r->logon15.pdc_dns_name);
 282                         p->dns_domain   = SET_STRING(r->logon15.dns_domain);
 283                         p->server_type  = r->logon15.server_type;
 284                         p->forest       = SET_STRING(r->logon15.forest);
 285                         p->domain_uuid  = r->logon15.domain_uuid;
 286                         p->server_site  = SET_STRING(r->logon15.server_site);
 287                         p->client_site  = SET_STRING(r->logon15.client_site);
 288
 289                         break;
 290                 case 29:
 291                 case 30:
 292                 case 31:
 293                         p->pdc_name     = SET_STRING(r->logon29.pdc_name);
 294                         p->domain       = SET_STRING(r->logon29.domain);
 295                         p->pdc_dns_name = SET_STRING(r->logon29.pdc_dns_name);
 296                         p->dns_domain   = SET_STRING(r->logon29.dns_domain);
 297                         p->server_type  = r->logon29.server_type;
 298                         p->forest       = SET_STRING(r->logon29.forest);
 299                         p->domain_uuid  = r->logon29.domain_uuid;
 300                         p->server_site  = SET_STRING(r->logon29.server_site);
 301                         p->client_site  = SET_STRING(r->logon29.client_site);
 302                         p->next_closest_site = SET_STRING(r->logon29.next_closest_site);
 303
 304                         break;
 305                 default:
 306                         return NT_STATUS_INVALID_PARAMETER;
 307         }
 308
 309         return NT_STATUS_OK;
 310 }
 311
 312 /****************************************************************
 313 ****************************************************************/
 314
 315 static NTSTATUS store_cldap_reply(TALLOC_CTX *mem_ctx,
 316                                   uint32_t flags,
 317                                   struct sockaddr_storage *ss,
 318                                   uint32_t nt_version,
 319                                   union nbt_cldap_netlogon *r)
 320 {
 321         DATA_BLOB blob;
 322         enum ndr_err_code ndr_err;
 323         NTSTATUS status;
 324         struct nbt_cldap_netlogon_29 logon29;
 325
 326         status = map_logon29_from_cldap_reply(mem_ctx, flags, ss,
 327                                               nt_version, r, &logon29);
 328         if (!NT_STATUS_IS_OK(status)) {
 329                 return status;
 330         }
 331
 332         ndr_err = ndr_push_struct_blob(&blob, mem_ctx, &logon29,
 333                        (ndr_push_flags_fn_t)ndr_push_nbt_cldap_netlogon_29);
 334         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 335                 return ndr_map_error2ntstatus(ndr_err);
 336         }
 337
 338         if (logon29.domain) {
 339                 status = dsgetdcname_cache_store(mem_ctx, logon29.domain, &blob);
 340                 if (!NT_STATUS_IS_OK(status)) {
 341                         goto done;
 342                 }
 343         }
 344         if (logon29.dns_domain) {
 345                 status = dsgetdcname_cache_store(mem_ctx, logon29.dns_domain, &blob);
 346                 if (!NT_STATUS_IS_OK(status)) {
 347                         goto done;
 348                 }
 349         }
 350
 351  done:
 352         data_blob_free(&blob);
 353
 354         return status;
 355 }
 356
 357 /****************************************************************
 358 ****************************************************************/
 359
 360 static NTSTATUS dsgetdcname_cache_refresh(TALLOC_CTX *mem_ctx,
 361                                           struct messaging_context *msg_ctx,
 362                                           const char *domain_name,
 363                                           struct GUID *domain_guid,
 364                                           uint32_t flags,
 365                                           const char *site_name,
 366                                           struct netr_DsRGetDCNameInfo *info)
 367 {
 368         struct netr_DsRGetDCNameInfo *dc_info;
 369
 370         return dsgetdcname(mem_ctx,
 371                            msg_ctx,
 372                            domain_name,
 373                            domain_guid,
 374                            site_name,
 375                            flags | DS_FORCE_REDISCOVERY,
 376                            &dc_info);
 377 }
 378
 379 /****************************************************************
 380 ****************************************************************/
 381
 382 static uint32_t get_cldap_reply_server_flags(union nbt_cldap_netlogon *r,
 383                                              uint32_t nt_version)
 384 {
 385         switch (nt_version & 0x0000001f) {
 386                 case 0:
 387                 case 1:
 388                 case 16:
 389                 case 17:
 390                         return 0;
 391                 case 2:
 392                 case 3:
 393                 case 18:
 394                 case 19:
 395                         return r->logon3.server_type;
 396                 case 4:
 397                 case 5:
 398                 case 6:
 399                 case 7:
 400                         return r->logon5.server_type;
 401                 case 8:
 402                 case 9:
 403                 case 10:
 404                 case 11:
 405                 case 12:
 406                 case 13:
 407                 case 14:
 408                 case 15:
 409                         return r->logon13.server_type;
 410                 case 20:
 411                 case 21:
 412                 case 22:
 413                 case 23:
 414                 case 24:
 415                 case 25:
 416                 case 26:
 417                 case 27:
 418                 case 28:
 419                         return r->logon15.server_type;
 420                 case 29:
 421                 case 30:
 422                 case 31:
 423                         return r->logon29.server_type;
 424                 default:
 425                         return 0;
 426         }
 427 }
 428
 429 /****************************************************************
 430 ****************************************************************/
 431
 432 #define RETURN_ON_FALSE(x) if (!x) return false;
 433
 434 static bool check_cldap_reply_required_flags(uint32_t ret_flags,
 435                                              uint32_t req_flags)
 436 {
 437         if (ret_flags == 0) {
 438                 return true;
 439         }
 440
 441         if (req_flags & DS_PDC_REQUIRED)
 442                 RETURN_ON_FALSE(ret_flags & NBT_SERVER_PDC);
 443
 444         if (req_flags & DS_GC_SERVER_REQUIRED)
 445                 RETURN_ON_FALSE(ret_flags & NBT_SERVER_GC);
 446
 447         if (req_flags & DS_ONLY_LDAP_NEEDED)
 448                 RETURN_ON_FALSE(ret_flags & NBT_SERVER_LDAP);
 449
 450         if ((req_flags & DS_DIRECTORY_SERVICE_REQUIRED) ||
 451             (req_flags & DS_DIRECTORY_SERVICE_PREFERRED))
 452                 RETURN_ON_FALSE(ret_flags & NBT_SERVER_DS);
 453
 454         if (req_flags & DS_KDC_REQUIRED)
 455                 RETURN_ON_FALSE(ret_flags & NBT_SERVER_KDC);
 456
 457         if (req_flags & DS_TIMESERV_REQUIRED)
 458                 RETURN_ON_FALSE(ret_flags & NBT_SERVER_TIMESERV);
 459
 460         if (req_flags & DS_WRITABLE_REQUIRED)
 461                 RETURN_ON_FALSE(ret_flags & NBT_SERVER_WRITABLE);
 462
 463         return true;
 464 }
 465
 466 /****************************************************************
 467 ****************************************************************/
 468
 469 static NTSTATUS dsgetdcname_cache_fetch(TALLOC_CTX *mem_ctx,
 470                                         const char *domain_name,
 471                                         struct GUID *domain_guid,
 472                                         uint32_t flags,
 473                                         const char *site_name,
 474                                         struct netr_DsRGetDCNameInfo **info_p,
 475                                         bool *expired)
 476 {
 477         char *key;
 478         DATA_BLOB blob;
 479         enum ndr_err_code ndr_err;
 480         struct netr_DsRGetDCNameInfo *info;
 481         union nbt_cldap_netlogon p;
 482         struct nbt_cldap_netlogon_29 r;
 483         NTSTATUS status;
 484
 485         if (!gencache_init()) {
 486                 return NT_STATUS_INTERNAL_DB_ERROR;
 487         }
 488
 489         key = dsgetdcname_cache_key(mem_ctx, domain_name);
 490         if (!key) {
 491                 return NT_STATUS_NO_MEMORY;
 492         }
 493
 494         if (!gencache_get_data_blob(key, &blob, expired)) {
 495                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 496         }
 497
 498         info = TALLOC_ZERO_P(mem_ctx, struct netr_DsRGetDCNameInfo);
 499         if (!info) {
 500                 return NT_STATUS_NO_MEMORY;
 501         }
 502
 503         ndr_err = ndr_pull_struct_blob(&blob, mem_ctx, &r,
 504                       (ndr_pull_flags_fn_t)ndr_pull_nbt_cldap_netlogon_29);
 505
 506         data_blob_free(&blob);
 507         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 508                 dsgetdcname_cache_delete(mem_ctx, domain_name);
 509                 return ndr_map_error2ntstatus(ndr_err);
 510         }
 511
 512         p.logon29 = r;
 513
 514         status = make_dc_info_from_cldap_reply(mem_ctx, flags, NULL,
 515                                                29,
 516                                                &p, &info);
 517         if (!NT_STATUS_IS_OK(status)) {
 518                 return status;
 519         }
 520
 521         if (DEBUGLEVEL >= 10) {
 522                 NDR_PRINT_DEBUG(netr_DsRGetDCNameInfo, info);
 523         }
 524
 525         /* check flags */
 526         if (!check_cldap_reply_required_flags(info->dc_flags, flags)) {
 527                 DEBUG(10,("invalid flags\n"));
 528                 return NT_STATUS_INVALID_PARAMETER;
 529         }
 530
 531         if ((flags & DS_IP_REQUIRED) &&
 532             (info->dc_address_type != DS_ADDRESS_TYPE_INET)) {
 533                 return NT_STATUS_INVALID_PARAMETER_MIX;
 534         }
 535
 536         *info_p = info;
 537
 538         return NT_STATUS_OK;
 539 }
 540
 541 /****************************************************************
 542 ****************************************************************/
 543
 544 static NTSTATUS dsgetdcname_cached(TALLOC_CTX *mem_ctx,
 545                                    struct messaging_context *msg_ctx,
 546                                    const char *domain_name,
 547                                    struct GUID *domain_guid,
 548                                    uint32_t flags,
 549                                    const char *site_name,
 550                                    struct netr_DsRGetDCNameInfo **info)
 551 {
 552         NTSTATUS status;
 553         bool expired = false;
 554
 555         status = dsgetdcname_cache_fetch(mem_ctx, domain_name, domain_guid,
 556                                          flags, site_name, info, &expired);
 557         if (!NT_STATUS_IS_OK(status)) {
 558                 DEBUG(10,("dsgetdcname_cached: cache fetch failed with: %s\n",
 559                         nt_errstr(status)));
 560                 return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
 561         }
 562
 563         if (flags & DS_BACKGROUND_ONLY) {
 564                 return status;
 565         }
 566
 567         if (expired) {
 568                 status = dsgetdcname_cache_refresh(mem_ctx, msg_ctx,
 569                                                    domain_name,
 570                                                    domain_guid, flags,
 571                                                    site_name, *info);
 572                 if (!NT_STATUS_IS_OK(status)) {
 573                         return status;
 574                 }
 575         }
 576
 577         return status;
 578 }
 579
 580 /****************************************************************
 581 ****************************************************************/
 582
 583 static bool check_allowed_required_flags(uint32_t flags)
 584 {
 585         uint32_t return_type = flags & (DS_RETURN_FLAT_NAME|DS_RETURN_DNS_NAME);
 586         uint32_t offered_type = flags & (DS_IS_FLAT_NAME|DS_IS_DNS_NAME);
 587         uint32_t query_type = flags & (DS_BACKGROUND_ONLY|DS_FORCE_REDISCOVERY);
 588
 589         /* FIXME: check for DSGETDC_VALID_FLAGS and check for excluse bits
 590          * (DS_PDC_REQUIRED, DS_KDC_REQUIRED, DS_GC_SERVER_REQUIRED) */
 591
 592         debug_dsdcinfo_flags(10, flags);
 593
 594         if (return_type == (DS_RETURN_FLAT_NAME|DS_RETURN_DNS_NAME)) {
 595                 return false;
 596         }
 597
 598         if (offered_type == (DS_IS_DNS_NAME|DS_IS_FLAT_NAME)) {
 599                 return false;
 600         }
 601
 602         if (query_type == (DS_BACKGROUND_ONLY|DS_FORCE_REDISCOVERY)) {
 603                 return false;
 604         }
 605
 606 #if 0
 607         if ((flags & DS_RETURN_DNS_NAME) && (!(flags & DS_IP_REQUIRED))) {
 608                 printf("gd: here5 \n");
 609                 return false;
 610         }
 611 #endif
 612         return true;
 613 }
 614
 615 /****************************************************************
 616 ****************************************************************/
 617
 618 static NTSTATUS discover_dc_netbios(TALLOC_CTX *mem_ctx,
 619                                     const char *domain_name,
 620                                     uint32_t flags,
 621                                     struct ip_service_name **returned_dclist,
 622                                     int *returned_count)
 623 {
 624         NTSTATUS status;
 625         enum nbt_name_type name_type = NBT_NAME_LOGON;
 626         struct ip_service *iplist;
 627         int i;
 628         struct ip_service_name *dclist = NULL;
 629         int count;
 630
 631         *returned_dclist = NULL;
 632         *returned_count = 0;
 633
 634         if (lp_disable_netbios()) {
 635                 return NT_STATUS_NOT_SUPPORTED;
 636         }
 637
 638         if (flags & DS_PDC_REQUIRED) {
 639                 name_type = NBT_NAME_PDC;
 640         }
 641
 642         status = internal_resolve_name(domain_name, name_type, NULL,
 643                                        &iplist, &count,
 644                                        "lmhosts wins bcast");
 645         if (!NT_STATUS_IS_OK(status)) {
 646                 DEBUG(10,("discover_dc_netbios: failed to find DC\n"));
 647                 return status;
 648         }
 649
 650         dclist = TALLOC_ZERO_ARRAY(mem_ctx, struct ip_service_name, count);
 651         if (!dclist) {
 652                 return NT_STATUS_NO_MEMORY;
 653         }
 654
 655         for (i=0; i<count; i++) {
 656
 657                 char addr[INET6_ADDRSTRLEN];
 658                 struct ip_service_name *r = &dclist[i];
 659
 660                 print_sockaddr(addr, sizeof(addr),
 661                                &iplist[i].ss);
 662
 663                 r->ss   = iplist[i].ss;
 664                 r->port = iplist[i].port;
 665                 r->hostname = talloc_strdup(mem_ctx, addr);
 666                 if (!r->hostname) {
 667                         return NT_STATUS_NO_MEMORY;
 668                 }
 669
 670         }
 671
 672         *returned_dclist = dclist;
 673         *returned_count = count;
 674
 675         return NT_STATUS_OK;
 676 }
 677
 678 /****************************************************************
 679 ****************************************************************/
 680
 681 static NTSTATUS discover_dc_dns(TALLOC_CTX *mem_ctx,
 682                                 const char *domain_name,
 683                                 struct GUID *domain_guid,
 684                                 uint32_t flags,
 685                                 const char *site_name,
 686                                 struct ip_service_name **returned_dclist,
 687                                 int *return_count)
 688 {
 689         int i, j;
 690         NTSTATUS status;
 691         struct dns_rr_srv *dcs = NULL;
 692         int numdcs = 0;
 693         int numaddrs = 0;
 694         struct ip_service_name *dclist = NULL;
 695         int count = 0;
 696
 697         if (flags & DS_PDC_REQUIRED) {
 698                 status = ads_dns_query_pdc(mem_ctx, domain_name,
 699                                            &dcs, &numdcs);
 700         } else if (flags & DS_GC_SERVER_REQUIRED) {
 701                 status = ads_dns_query_gcs(mem_ctx, domain_name, site_name,
 702                                            &dcs, &numdcs);
 703         } else if (flags & DS_KDC_REQUIRED) {
 704                 status = ads_dns_query_kdcs(mem_ctx, domain_name, site_name,
 705                                             &dcs, &numdcs);
 706         } else if (flags & DS_DIRECTORY_SERVICE_REQUIRED) {
 707                 status = ads_dns_query_dcs(mem_ctx, domain_name, site_name,
 708                                            &dcs, &numdcs);
 709         } else if (domain_guid) {
 710                 status = ads_dns_query_dcs_guid(mem_ctx, domain_name,
 711                                                 domain_guid, &dcs, &numdcs);
 712         } else {
 713                 status = ads_dns_query_dcs(mem_ctx, domain_name, site_name,
 714                                            &dcs, &numdcs);
 715         }
 716
 717         if (!NT_STATUS_IS_OK(status)) {
 718                 return status;
 719         }
 720
 721         if (numdcs == 0) {
 722                 return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
 723         }
 724
 725         for (i=0;i<numdcs;i++) {
 726                 numaddrs += MAX(dcs[i].num_ips,1);
 727         }
 728
 729         dclist = TALLOC_ZERO_ARRAY(mem_ctx,
 730                                    struct ip_service_name,
 731                                    numaddrs);
 732         if (!dclist) {
 733                 return NT_STATUS_NO_MEMORY;
 734         }
 735
 736         /* now unroll the list of IP addresses */
 737
 738         *return_count = 0;
 739         i = 0;
 740         j = 0;
 741
 742         while ((i < numdcs) && (count < numaddrs)) {
 743
 744                 struct ip_service_name *r = &dclist[count];
 745
 746                 r->port = dcs[count].port;
 747                 r->hostname = dcs[count].hostname;
 748
 749                 /* If we don't have an IP list for a name, lookup it up */
 750
 751                 if (!dcs[i].ss_s) {
 752                         interpret_string_addr(&r->ss, dcs[i].hostname, 0);
 753                         i++;
 754                         j = 0;
 755                 } else {
 756                         /* use the IP addresses from the SRV sresponse */
 757
 758                         if (j >= dcs[i].num_ips) {
 759                                 i++;
 760                                 j = 0;
 761                                 continue;
 762                         }
 763
 764                         r->ss = dcs[i].ss_s[j];
 765                         j++;
 766                 }
 767
 768                 /* make sure it is a valid IP.  I considered checking the
 769                  * negative connection cache, but this is the wrong place for
 770                  * it.  Maybe only as a hac.  After think about it, if all of
 771                  * the IP addresses retuend from DNS are dead, what hope does a
 772                  * netbios name lookup have?  The standard reason for falling
 773                  * back to netbios lookups is that our DNS server doesn't know
 774                  * anything about the DC's   -- jerry */
 775
 776                 if (!is_zero_addr(&r->ss)) {
 777                         count++;
 778                         continue;
 779                 }
 780         }
 781
 782         *returned_dclist = dclist;
 783         *return_count = count;
 784
 785         if (count > 0) {
 786                 return NT_STATUS_OK;
 787         }
 788
 789         return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
 790 }
 791
 792 /****************************************************************
 793 ****************************************************************/
 794
 795 static NTSTATUS make_domain_controller_info(TALLOC_CTX *mem_ctx,
 796                                             const char *dc_unc,
 797                                             const char *dc_address,
 798                                             uint32_t dc_address_type,
 799                                             const struct GUID *domain_guid,
 800                                             const char *domain_name,
 801                                             const char *forest_name,
 802                                             uint32_t flags,
 803                                             const char *dc_site_name,
 804                                             const char *client_site_name,
 805                                             struct netr_DsRGetDCNameInfo **info_out)
 806 {
 807         struct netr_DsRGetDCNameInfo *info;
 808
 809         info = TALLOC_ZERO_P(mem_ctx, struct netr_DsRGetDCNameInfo);
 810         NT_STATUS_HAVE_NO_MEMORY(info);
 811
 812         if (dc_unc) {
 813                 info->dc_unc = talloc_strdup(mem_ctx, dc_unc);
 814                 NT_STATUS_HAVE_NO_MEMORY(info->dc_unc);
 815         }
 816
 817         if (dc_address) {
 818                 if (!(dc_address[0] == '\\' && dc_address[1] == '\\')) {
 819                         info->dc_address = talloc_asprintf(mem_ctx, "\\\\%s",
 820                                                            dc_address);
 821                 } else {
 822                         info->dc_address = talloc_strdup(mem_ctx, dc_address);
 823                 }
 824                 NT_STATUS_HAVE_NO_MEMORY(info->dc_address);
 825         }
 826
 827         info->dc_address_type = dc_address_type;
 828
 829         if (domain_guid) {
 830                 info->domain_guid = *domain_guid;
 831         }
 832
 833         if (domain_name) {
 834                 info->domain_name = talloc_strdup(mem_ctx, domain_name);
 835                 NT_STATUS_HAVE_NO_MEMORY(info->domain_name);
 836         }
 837
 838         if (forest_name && *forest_name) {
 839                 info->forest_name = talloc_strdup(mem_ctx, forest_name);
 840                 NT_STATUS_HAVE_NO_MEMORY(info->forest_name);
 841                 flags |= DS_DNS_FOREST;
 842         }
 843
 844         info->dc_flags = flags;
 845
 846         if (dc_site_name) {
 847                 info->dc_site_name = talloc_strdup(mem_ctx, dc_site_name);
 848                 NT_STATUS_HAVE_NO_MEMORY(info->dc_site_name);
 849         }
 850
 851         if (client_site_name) {
 852                 info->client_site_name = talloc_strdup(mem_ctx,
 853                                                        client_site_name);
 854                 NT_STATUS_HAVE_NO_MEMORY(info->client_site_name);
 855         }
 856
 857         *info_out = info;
 858
 859         return NT_STATUS_OK;
 860 }
 861
 862 /****************************************************************
 863 ****************************************************************/
 864
 865 static void map_dc_and_domain_names(uint32_t flags,
 866                                     const char *dc_name,
 867                                     const char *domain_name,
 868                                     const char *dns_dc_name,
 869                                     const char *dns_domain_name,
 870                                     uint32_t *dc_flags,
 871                                     const char **hostname_p,
 872                                     const char **domain_p)
 873 {
 874         switch (flags & 0xf0000000) {
 875                 case DS_RETURN_FLAT_NAME:
 876                         if (dc_name && domain_name &&
 877                             *dc_name && *domain_name) {
 878                                 *hostname_p = dc_name;
 879                                 *domain_p = domain_name;
 880                                 break;
 881                         }
 882                 case DS_RETURN_DNS_NAME:
 883                 default:
 884                         if (dns_dc_name && dns_domain_name &&
 885                             *dns_dc_name && *dns_domain_name) {
 886                                 *hostname_p = dns_dc_name;
 887                                 *domain_p = dns_domain_name;
 888                                 *dc_flags |= DS_DNS_DOMAIN | DS_DNS_CONTROLLER;
 889                                 break;
 890                         }
 891                         if (dc_name && domain_name &&
 892                             *dc_name && *domain_name) {
 893                                 *hostname_p = dc_name;
 894                                 *domain_p = domain_name;
 895                                 break;
 896                         }
 897         }
 898 }
 899
 900 /****************************************************************
 901 ****************************************************************/
 902
 903 static NTSTATUS make_dc_info_from_cldap_reply(TALLOC_CTX *mem_ctx,
 904                                               uint32_t flags,
 905                                               struct sockaddr_storage *ss,
 906                                               uint32_t nt_version,
 907                                               union nbt_cldap_netlogon *r,
 908                                               struct netr_DsRGetDCNameInfo **info)
 909 {
 910         const char *dc_hostname, *dc_domain_name;
 911         const char *dc_address = NULL;
 912         const char *dc_forest = NULL;
 913         uint32_t dc_address_type = 0;
 914         uint32_t dc_flags = 0;
 915         struct GUID *dc_domain_guid = NULL;
 916         const char *dc_server_site = NULL;
 917         const char *dc_client_site = NULL;
 918
 919         char addr[INET6_ADDRSTRLEN];
 920
 921         if (ss) {
 922                 print_sockaddr(addr, sizeof(addr), ss);
 923                 dc_address = addr;
 924                 dc_address_type = DS_ADDRESS_TYPE_INET;
 925         }
 926
 927         switch (nt_version & 0x0000001f) {
 928                 case 0:
 929                 case 1:
 930                 case 16:
 931                 case 17:
 932                         if (!ss) {
 933                                 dc_address      = r->logon1.pdc_name;
 934                                 dc_address_type = DS_ADDRESS_TYPE_NETBIOS;
 935                         }
 936
 937                         map_dc_and_domain_names(flags,
 938                                                 r->logon1.pdc_name,
 939                                                 r->logon1.domain_name,
 940                                                 NULL,
 941                                                 NULL,
 942                                                 &dc_flags,
 943                                                 &dc_hostname,
 944                                                 &dc_domain_name);
 945
 946                         if (flags & DS_PDC_REQUIRED) {
 947                                 dc_flags = NBT_SERVER_WRITABLE | NBT_SERVER_PDC;
 948                         }
 949                         break;
 950                 case 2:
 951                 case 3:
 952                 case 18:
 953                 case 19:
 954                         if (!ss) {
 955                                 dc_address      = r->logon3.pdc_ip;
 956                                 dc_address_type = DS_ADDRESS_TYPE_INET;
 957                         }
 958
 959                         map_dc_and_domain_names(flags,
 960                                                 r->logon3.pdc_name,
 961                                                 r->logon3.domain_name,
 962                                                 r->logon3.pdc_dns_name,
 963                                                 r->logon3.dns_domain,
 964                                                 &dc_flags,
 965                                                 &dc_hostname,
 966                                                 &dc_domain_name);
 967
 968                         dc_flags        |= r->logon3.server_type;
 969                         dc_forest       = r->logon3.forest;
 970                         dc_domain_guid  = &r->logon3.domain_uuid;
 971
 972                         break;
 973                 case 4:
 974                 case 5:
 975                 case 6:
 976                 case 7:
 977                         if (!ss) {
 978                                 dc_address      = r->logon5.pdc_name;
 979                                 dc_address_type = DS_ADDRESS_TYPE_NETBIOS;
 980                         }
 981
 982                         map_dc_and_domain_names(flags,
 983                                                 r->logon5.pdc_name,
 984                                                 r->logon5.domain,
 985                                                 r->logon5.pdc_dns_name,
 986                                                 r->logon5.dns_domain,
 987                                                 &dc_flags,
 988                                                 &dc_hostname,
 989                                                 &dc_domain_name);
 990
 991                         dc_flags        |= r->logon5.server_type;
 992                         dc_forest       = r->logon5.forest;
 993                         dc_domain_guid  = &r->logon5.domain_uuid;
 994                         dc_server_site  = r->logon5.server_site;
 995                         dc_client_site  = r->logon5.client_site;
 996
 997                         break;
 998                 case 8:
 999                 case 9:
1000                 case 10:
1001                 case 11:
1002                 case 12:
1003                 case 13:
1004                 case 14:
1005                 case 15:
1006                         if (!ss) {
1007                                 dc_address      = r->logon13.dc_sock_addr.pdc_ip;
1008                                 dc_address_type = DS_ADDRESS_TYPE_INET;
1009                         }
1010
1011                         map_dc_and_domain_names(flags,
1012                                                 r->logon13.pdc_name,
1013                                                 r->logon13.domain,
1014                                                 r->logon13.pdc_dns_name,
1015                                                 r->logon13.dns_domain,
1016                                                 &dc_flags,
1017                                                 &dc_hostname,
1018                                                 &dc_domain_name);
1019
1020                         dc_flags        |= r->logon13.server_type;
1021                         dc_forest       = r->logon13.forest;
1022                         dc_domain_guid  = &r->logon13.domain_uuid;
1023                         dc_server_site  = r->logon13.server_site;
1024                         dc_client_site  = r->logon13.client_site;
1025
1026                         break;
1027                 case 20:
1028                 case 21:
1029                 case 22:
1030                 case 23:
1031                 case 24:
1032                 case 25:
1033                 case 26:
1034                 case 27:
1035                 case 28:
1036                         if (!ss) {
1037                                 dc_address      = r->logon15.pdc_name;
1038                                 dc_address_type = DS_ADDRESS_TYPE_NETBIOS;
1039                         }
1040
1041                         map_dc_and_domain_names(flags,
1042                                                 r->logon15.pdc_name,
1043                                                 r->logon15.domain,
1044                                                 r->logon15.pdc_dns_name,
1045                                                 r->logon15.dns_domain,
1046                                                 &dc_flags,
1047                                                 &dc_hostname,
1048                                                 &dc_domain_name);
1049
1050                         dc_flags        |= r->logon15.server_type;
1051                         dc_forest       = r->logon15.forest;
1052                         dc_domain_guid  = &r->logon15.domain_uuid;
1053                         dc_server_site  = r->logon15.server_site;
1054                         dc_client_site  = r->logon15.client_site;
1055
1056                         break;
1057                 case 29:
1058                 case 30:
1059                 case 31:
1060                         if (!ss) {
1061                                 dc_address      = r->logon29.dc_sock_addr.pdc_ip;
1062                                 dc_address_type = DS_ADDRESS_TYPE_INET;
1063                         }
1064
1065                         map_dc_and_domain_names(flags,
1066                                                 r->logon29.pdc_name,
1067                                                 r->logon29.domain,
1068                                                 r->logon29.pdc_dns_name,
1069                                                 r->logon29.dns_domain,
1070                                                 &dc_flags,
1071                                                 &dc_hostname,
1072                                                 &dc_domain_name);
1073
1074                         dc_flags        |= r->logon29.server_type;
1075                         dc_forest       = r->logon29.forest;
1076                         dc_domain_guid  = &r->logon29.domain_uuid;
1077                         dc_server_site  = r->logon29.server_site;
1078                         dc_client_site  = r->logon29.client_site;
1079
1080                         break;
1081                 default:
1082                         return NT_STATUS_INVALID_PARAMETER;
1083         }
1084
1085         return make_domain_controller_info(mem_ctx,
1086                                            dc_hostname,
1087                                            dc_address,
1088                                            dc_address_type,
1089                                            dc_domain_guid,
1090                                            dc_domain_name,
1091                                            dc_forest,
1092                                            dc_flags,
1093                                            dc_server_site,
1094                                            dc_client_site,
1095                                            info);
1096 }
1097
1098 /****************************************************************
1099 ****************************************************************/
1100
1101 static uint32_t map_ds_flags_to_nt_version(uint32_t flags)
1102 {
1103         uint32_t nt_version = 0;
1104
1105         if (flags & DS_PDC_REQUIRED) {
1106                 nt_version |= NETLOGON_VERSION_PDC;
1107         }
1108
1109         if (flags & DS_GC_SERVER_REQUIRED) {
1110                 nt_version |= NETLOGON_VERSION_GC;
1111         }
1112
1113         if (flags & DS_TRY_NEXTCLOSEST_SITE) {
1114                 nt_version |= NETLOGON_VERSION_WITH_CLOSEST_SITE;
1115         }
1116
1117         if (flags & DS_IP_REQUIRED) {
1118                 nt_version |= NETLOGON_VERSION_IP;
1119         }
1120
1121         return nt_version;
1122 }
1123
1124 /****************************************************************
1125 ****************************************************************/
1126
1127 static NTSTATUS process_dc_dns(TALLOC_CTX *mem_ctx,
1128                                const char *domain_name,
1129                                uint32_t flags,
1130                                struct ip_service_name *dclist,
1131                                int num_dcs,
1132                                struct netr_DsRGetDCNameInfo **info)
1133 {
1134         int i = 0;
1135         bool valid_dc = false;
1136         union nbt_cldap_netlogon *r = NULL;
1137         uint32_t nt_version = NETLOGON_VERSION_5 |
1138                               NETLOGON_VERSION_5EX;
1139         uint32_t ret_flags = 0;
1140         NTSTATUS status;
1141
1142         nt_version |= map_ds_flags_to_nt_version(flags);
1143
1144         for (i=0; i<num_dcs; i++) {
1145
1146                 DEBUG(10,("LDAP ping to %s\n", dclist[i].hostname));
1147
1148                 if (ads_cldap_netlogon(mem_ctx, dclist[i].hostname,
1149                                         domain_name,
1150                                         &nt_version,
1151                                         &r))
1152                 {
1153                         ret_flags = get_cldap_reply_server_flags(r, nt_version);
1154
1155                         if (check_cldap_reply_required_flags(ret_flags, flags)) {
1156                                 valid_dc = true;
1157                                 break;
1158                         }
1159                 }
1160
1161                 continue;
1162         }
1163
1164         if (!valid_dc) {
1165                 return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1166         }
1167
1168         status = make_dc_info_from_cldap_reply(mem_ctx, flags, &dclist[i].ss,
1169                                                nt_version, r, info);
1170         if (NT_STATUS_IS_OK(status)) {
1171                 return store_cldap_reply(mem_ctx, flags, &dclist[i].ss,
1172                                          nt_version, r);
1173         }
1174
1175         return status;
1176 }
1177
1178 /****************************************************************
1179 ****************************************************************/
1180
1181 static struct event_context *ev_context(void)
1182 {
1183         static struct event_context *ctx;
1184
1185         if (!ctx && !(ctx = event_context_init(NULL))) {
1186                 smb_panic("Could not init event context");
1187         }
1188         return ctx;
1189 }
1190
1191 /****************************************************************
1192 ****************************************************************/
1193
1194 static struct messaging_context *msg_context(TALLOC_CTX *mem_ctx)
1195 {
1196         static struct messaging_context *ctx;
1197
1198         if (!ctx && !(ctx = messaging_init(mem_ctx, server_id_self(),
1199                                            ev_context()))) {
1200                 smb_panic("Could not init messaging context");
1201         }
1202         return ctx;
1203 }
1204
1205 /****************************************************************
1206 ****************************************************************/
1207
1208 static NTSTATUS process_dc_netbios(TALLOC_CTX *mem_ctx,
1209                                    struct messaging_context *msg_ctx,
1210                                    const char *domain_name,
1211                                    uint32_t flags,
1212                                    struct ip_service_name *dclist,
1213                                    int num_dcs,
1214                                    struct netr_DsRGetDCNameInfo **info)
1215 {
1216         struct sockaddr_storage ss;
1217         struct ip_service ip_list;
1218         enum nbt_name_type name_type = NBT_NAME_LOGON;
1219         NTSTATUS status;
1220         int i;
1221         const char *dc_name = NULL;
1222         fstring tmp_dc_name;
1223         union nbt_cldap_netlogon *r = NULL;
1224         uint32_t nt_version = NETLOGON_VERSION_1 |
1225                               NETLOGON_VERSION_5 |
1226                               NETLOGON_VERSION_5EX_WITH_IP;
1227
1228         if (!msg_ctx) {
1229                 msg_ctx = msg_context(mem_ctx);
1230         }
1231
1232         if (flags & DS_PDC_REQUIRED) {
1233                 name_type = NBT_NAME_PDC;
1234         }
1235
1236         nt_version |= map_ds_flags_to_nt_version(flags);
1237
1238         DEBUG(10,("process_dc_netbios\n"));
1239
1240         for (i=0; i<num_dcs; i++) {
1241
1242                 ip_list.ss = dclist[i].ss;
1243                 ip_list.port = 0;
1244
1245                 if (!interpret_string_addr(&ss, dclist[i].hostname, AI_NUMERICHOST)) {
1246                         return NT_STATUS_UNSUCCESSFUL;
1247                 }
1248
1249                 if (send_getdc_request(mem_ctx, msg_ctx,
1250                                        &dclist[i].ss, domain_name,
1251                                        NULL, nt_version))
1252                 {
1253                         int k;
1254                         smb_msleep(300);
1255                         for (k=0; k<5; k++) {
1256                                 if (receive_getdc_response(mem_ctx,
1257                                                            &dclist[i].ss,
1258                                                            domain_name,
1259                                                            &nt_version,
1260                                                            &dc_name,
1261                                                            &r)) {
1262                                         namecache_store(dc_name, NBT_NAME_SERVER, 1, &ip_list);
1263                                         goto make_reply;
1264                                 }
1265                                 smb_msleep(1500);
1266                         }
1267                 }
1268
1269                 if (name_status_find(domain_name,
1270                                      name_type,
1271                                      NBT_NAME_SERVER,
1272                                      &dclist[i].ss,
1273                                      tmp_dc_name))
1274                 {
1275                         struct nbt_cldap_netlogon_1 logon1;
1276
1277                         r = TALLOC_ZERO_P(mem_ctx, union nbt_cldap_netlogon);
1278                         NT_STATUS_HAVE_NO_MEMORY(r);
1279
1280                         ZERO_STRUCT(logon1);
1281
1282                         nt_version = NETLOGON_VERSION_1;
1283
1284                         logon1.nt_version = nt_version;
1285                         logon1.pdc_name = tmp_dc_name;
1286                         logon1.domain_name = talloc_strdup_upper(mem_ctx, domain_name);
1287                         NT_STATUS_HAVE_NO_MEMORY(logon1.domain_name);
1288
1289                         r->logon1 = logon1;
1290
1291                         namecache_store(tmp_dc_name, NBT_NAME_SERVER, 1, &ip_list);
1292
1293                         goto make_reply;
1294                 }
1295         }
1296
1297         return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1298
1299  make_reply:
1300
1301         status = make_dc_info_from_cldap_reply(mem_ctx, flags, &dclist[i].ss,
1302                                                nt_version, r, info);
1303         if (NT_STATUS_IS_OK(status)) {
1304                 return store_cldap_reply(mem_ctx, flags, &dclist[i].ss,
1305                                          nt_version, r);
1306         }
1307
1308         return status;
1309 }
1310
1311 /****************************************************************
1312 ****************************************************************/
1313
1314 static NTSTATUS dsgetdcname_rediscover(TALLOC_CTX *mem_ctx,
1315                                        struct messaging_context *msg_ctx,
1316                                        const char *domain_name,
1317                                        struct GUID *domain_guid,
1318                                        uint32_t flags,
1319                                        const char *site_name,
1320                                        struct netr_DsRGetDCNameInfo **info)
1321 {
1322         NTSTATUS status = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1323         struct ip_service_name *dclist = NULL;
1324         int num_dcs;
1325
1326         DEBUG(10,("dsgetdcname_rediscover\n"));
1327
1328         if (flags & DS_IS_FLAT_NAME) {
1329
1330                 status = discover_dc_netbios(mem_ctx, domain_name, flags,
1331                                              &dclist, &num_dcs);
1332                 NT_STATUS_NOT_OK_RETURN(status);
1333
1334                 return process_dc_netbios(mem_ctx, msg_ctx, domain_name, flags,
1335                                           dclist, num_dcs, info);
1336         }
1337
1338         if (flags & DS_IS_DNS_NAME) {
1339
1340                 status = discover_dc_dns(mem_ctx, domain_name, domain_guid,
1341                                          flags, site_name, &dclist, &num_dcs);
1342                 NT_STATUS_NOT_OK_RETURN(status);
1343
1344                 return process_dc_dns(mem_ctx, domain_name, flags,
1345                                       dclist, num_dcs, info);
1346         }
1347
1348         status = discover_dc_dns(mem_ctx, domain_name, domain_guid, flags,
1349                                  site_name, &dclist, &num_dcs);
1350
1351         if (NT_STATUS_IS_OK(status) && num_dcs != 0) {
1352
1353                 status = process_dc_dns(mem_ctx, domain_name, flags, dclist,
1354                                         num_dcs, info);
1355                 if (NT_STATUS_IS_OK(status)) {
1356                         return status;
1357                 }
1358         }
1359
1360         status = discover_dc_netbios(mem_ctx, domain_name, flags, &dclist,
1361                                      &num_dcs);
1362         NT_STATUS_NOT_OK_RETURN(status);
1363
1364         return process_dc_netbios(mem_ctx, msg_ctx, domain_name, flags, dclist,
1365                                   num_dcs, info);
1366 }
1367
1368 /********************************************************************
1369  dsgetdcname.
1370
1371  This will be the only public function here.
1372 ********************************************************************/
1373
1374 NTSTATUS dsgetdcname(TALLOC_CTX *mem_ctx,
1375                      struct messaging_context *msg_ctx,
1376                      const char *domain_name,
1377                      struct GUID *domain_guid,
1378                      const char *site_name,
1379                      uint32_t flags,
1380                      struct netr_DsRGetDCNameInfo **info)
1381 {
1382         NTSTATUS status = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1383         struct netr_DsRGetDCNameInfo *myinfo = NULL;
1384
1385         DEBUG(10,("dsgetdcname: domain_name: %s, "
1386                   "domain_guid: %s, site_name: %s, flags: 0x%08x\n",
1387                   domain_name,
1388                   domain_guid ? GUID_string(mem_ctx, domain_guid) : "(null)",
1389                   site_name, flags));
1390
1391         *info = NULL;
1392
1393         if (!check_allowed_required_flags(flags)) {
1394                 DEBUG(0,("invalid flags specified\n"));
1395                 return NT_STATUS_INVALID_PARAMETER;
1396         }
1397
1398         if (flags & DS_FORCE_REDISCOVERY) {
1399                 goto rediscover;
1400         }
1401
1402         status = dsgetdcname_cached(mem_ctx, msg_ctx, domain_name, domain_guid,
1403                                     flags, site_name, &myinfo);
1404         if (NT_STATUS_IS_OK(status)) {
1405                 *info = myinfo;
1406                 return status;
1407         }
1408
1409         if (flags & DS_BACKGROUND_ONLY) {
1410                 return status;
1411         }
1412
1413  rediscover:
1414         status = dsgetdcname_rediscover(mem_ctx, msg_ctx, domain_name,
1415                                         domain_guid, flags, site_name,
1416                                         &myinfo);
1417
1418         if (NT_STATUS_IS_OK(status)) {
1419                 *info = myinfo;
1420         }
1421
1422         return status;
1423 }