source4/dsdb/samdb/cracknames.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    crachnames implementation for the drsuapi pipe
   5    DsCrackNames()
   6
   7    Copyright (C) Stefan Metzmacher 2004
   8    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
   9    Copyright (C) Matthieu Patou <mat@matws.net> 2012
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 3 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23 */
  24
  25 #include "includes.h"
  26 #include "librpc/gen_ndr/drsuapi.h"
  27 #include "lib/events/events.h"
  28 #include <ldb.h>
  29 #include <ldb_errors.h>
  30 #include "auth/kerberos/kerberos.h"
  31 #include "libcli/ldap/ldap_ndr.h"
  32 #include "libcli/security/security.h"
  33 #include "auth/auth.h"
  34 #include "../lib/util/util_ldb.h"
  35 #include "dsdb/samdb/samdb.h"
  36 #include "dsdb/common/util.h"
  37 #include "param/param.h"
  38
  39 static WERROR DsCrackNameOneFilter(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
  40                                    struct smb_krb5_context *smb_krb5_context,
  41                                    uint32_t format_flags, enum drsuapi_DsNameFormat format_offered,
  42                                    enum drsuapi_DsNameFormat format_desired,
  43                                    struct ldb_dn *name_dn, const char *name,
  44                                    const char *domain_filter, const char *result_filter,
  45                                    struct drsuapi_DsNameInfo1 *info1, int scope, struct ldb_dn *search_dn);
  46 static WERROR DsCrackNameOneSyntactical(TALLOC_CTX *mem_ctx,
  47                                         enum drsuapi_DsNameFormat format_offered,
  48                                         enum drsuapi_DsNameFormat format_desired,
  49                                         struct ldb_dn *name_dn, const char *name,
  50                                         struct drsuapi_DsNameInfo1 *info1);
  51
  52 static WERROR dns_domain_from_principal(TALLOC_CTX *mem_ctx, struct smb_krb5_context *smb_krb5_context,
  53                                         const char *name,
  54                                         struct drsuapi_DsNameInfo1 *info1)
  55 {
  56         krb5_error_code ret;
  57         krb5_principal principal;
  58         /* perhaps it's a principal with a realm, so return the right 'domain only' response */
  59         const char *realm;
  60         ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
  61                                     KRB5_PRINCIPAL_PARSE_REQUIRE_REALM, &principal);
  62         if (ret) {
  63                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
  64                 return WERR_OK;
  65         }
  66
  67         /* This isn't an allocation assignemnt, so it is free'ed with the krb5_free_principal */
  68         realm = smb_krb5_principal_get_realm(smb_krb5_context->krb5_context, principal);
  69
  70         info1->dns_domain_name  = talloc_strdup(mem_ctx, realm);
  71         krb5_free_principal(smb_krb5_context->krb5_context, principal);
  72
  73         W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
  74
  75         info1->status = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
  76         return WERR_OK;
  77 }
  78
  79 static enum drsuapi_DsNameStatus LDB_lookup_spn_alias(krb5_context context, struct ldb_context *ldb_ctx,
  80                                                       TALLOC_CTX *mem_ctx,
  81                                                       const char *alias_from,
  82                                                       char **alias_to)
  83 {
  84         unsigned int i;
  85         int ret;
  86         struct ldb_result *res;
  87         struct ldb_message_element *spnmappings;
  88         TALLOC_CTX *tmp_ctx;
  89         struct ldb_dn *service_dn;
  90         char *service_dn_str;
  91
  92         const char *directory_attrs[] = {
  93                 "sPNMappings",
  94                 NULL
  95         };
  96
  97         tmp_ctx = talloc_new(mem_ctx);
  98         if (!tmp_ctx) {
  99                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 100         }
 101
 102         service_dn = ldb_dn_new(tmp_ctx, ldb_ctx, "CN=Directory Service,CN=Windows NT,CN=Services");
 103         if ( ! ldb_dn_add_base(service_dn, ldb_get_config_basedn(ldb_ctx))) {
 104                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 105         }
 106         service_dn_str = ldb_dn_alloc_linearized(tmp_ctx, service_dn);
 107         if ( ! service_dn_str) {
 108                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 109         }
 110
 111         ret = ldb_search(ldb_ctx, tmp_ctx, &res, service_dn, LDB_SCOPE_BASE,
 112                          directory_attrs, "(objectClass=nTDSService)");
 113
 114         if (ret != LDB_SUCCESS && ret != LDB_ERR_NO_SUCH_OBJECT) {
 115                 DEBUG(1, ("ldb_search: dn: %s not found: %s\n", service_dn_str, ldb_errstring(ldb_ctx)));
 116                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 117         } else if (ret == LDB_ERR_NO_SUCH_OBJECT) {
 118                 DEBUG(1, ("ldb_search: dn: %s not found\n", service_dn_str));
 119                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 120         } else if (res->count != 1) {
 121                 talloc_free(res);
 122                 DEBUG(1, ("ldb_search: dn: %s not found\n", service_dn_str));
 123                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 124         }
 125
 126         spnmappings = ldb_msg_find_element(res->msgs[0], "sPNMappings");
 127         if (!spnmappings || spnmappings->num_values == 0) {
 128                 DEBUG(1, ("ldb_search: dn: %s no sPNMappings attribute\n", service_dn_str));
 129                 talloc_free(tmp_ctx);
 130                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 131         }
 132
 133         for (i = 0; i < spnmappings->num_values; i++) {
 134                 char *mapping, *p, *str;
 135                 mapping = talloc_strdup(tmp_ctx,
 136                                         (const char *)spnmappings->values[i].data);
 137                 if (!mapping) {
 138                         DEBUG(1, ("LDB_lookup_spn_alias: ldb_search: dn: %s did not have an sPNMapping\n", service_dn_str));
 139                         talloc_free(tmp_ctx);
 140                         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 141                 }
 142
 143                 /* C string manipulation sucks */
 144
 145                 p = strchr(mapping, '=');
 146                 if (!p) {
 147                         DEBUG(1, ("ldb_search: dn: %s sPNMapping malformed: %s\n",
 148                                   service_dn_str, mapping));
 149                         talloc_free(tmp_ctx);
 150                         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 151                 }
 152                 p[0] = '\0';
 153                 p++;
 154                 do {
 155                         str = p;
 156                         p = strchr(p, ',');
 157                         if (p) {
 158                                 p[0] = '\0';
 159                                 p++;
 160                         }
 161                         if (strcasecmp(str, alias_from) == 0) {
 162                                 *alias_to = mapping;
 163                                 talloc_steal(mem_ctx, mapping);
 164                                 talloc_free(tmp_ctx);
 165                                 return DRSUAPI_DS_NAME_STATUS_OK;
 166                         }
 167                 } while (p);
 168         }
 169         DEBUG(4, ("LDB_lookup_spn_alias: no alias for service %s applicable\n", alias_from));
 170         talloc_free(tmp_ctx);
 171         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 172 }
 173
 174 /* When cracking a ServicePrincipalName, many services may be served
 175  * by the host/ servicePrincipalName.  The incoming query is for cifs/
 176  * but we translate it here, and search on host/.  This is done after
 177  * the cifs/ entry has been searched for, making this a fallback */
 178
 179 static WERROR DsCrackNameSPNAlias(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 180                                   struct smb_krb5_context *smb_krb5_context,
 181                                   uint32_t format_flags, enum drsuapi_DsNameFormat format_offered,
 182                                   enum drsuapi_DsNameFormat format_desired,
 183                                   const char *name, struct drsuapi_DsNameInfo1 *info1)
 184 {
 185         WERROR wret;
 186         krb5_error_code ret;
 187         krb5_principal principal;
 188         const krb5_data *component;
 189         const char *service, *dns_name;
 190         char *new_service;
 191         char *new_princ;
 192         enum drsuapi_DsNameStatus namestatus;
 193
 194         /* parse principal */
 195         ret = krb5_parse_name_flags(smb_krb5_context->krb5_context,
 196                                     name, KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
 197         if (ret) {
 198                 DEBUG(2, ("Could not parse principal: %s: %s\n",
 199                           name, smb_get_krb5_error_message(smb_krb5_context->krb5_context,
 200                                                            ret, mem_ctx)));
 201                 return WERR_NOMEM;
 202         }
 203
 204         /* grab cifs/, http/ etc */
 205
 206         /* This is checked for in callers, but be safe */
 207         if (krb5_princ_size(smb_krb5_context->krb5_context, principal) < 2) {
 208                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 209                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 210                 return WERR_OK;
 211         }
 212         component = krb5_princ_component(smb_krb5_context->krb5_context,
 213                                          principal, 0);
 214         service = (const char *)component->data;
 215         component = krb5_princ_component(smb_krb5_context->krb5_context,
 216                                          principal, 1);
 217         dns_name = (const char *)component->data;
 218
 219         /* MAP it */
 220         namestatus = LDB_lookup_spn_alias(smb_krb5_context->krb5_context,
 221                                           sam_ctx, mem_ctx,
 222                                           service, &new_service);
 223
 224         if (namestatus == DRSUAPI_DS_NAME_STATUS_NOT_FOUND) {
 225                 wret = WERR_OK;
 226                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 227                 info1->dns_domain_name  = talloc_strdup(mem_ctx, dns_name);
 228                 if (!info1->dns_domain_name) {
 229                         wret = WERR_NOMEM;
 230                 }
 231                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 232                 return wret;
 233         } else if (namestatus != DRSUAPI_DS_NAME_STATUS_OK) {
 234                 info1->status = namestatus;
 235                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 236                 return WERR_OK;
 237         }
 238
 239         /* reform principal */
 240         new_princ = talloc_asprintf(mem_ctx, "%s/%s", new_service, dns_name);
 241         if (!new_princ) {
 242                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 243                 return WERR_NOMEM;
 244         }
 245
 246         wret = DsCrackNameOneName(sam_ctx, mem_ctx, format_flags, format_offered, format_desired,
 247                                   new_princ, info1);
 248         talloc_free(new_princ);
 249         if (W_ERROR_IS_OK(wret) && (info1->status == DRSUAPI_DS_NAME_STATUS_NOT_FOUND)) {
 250                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 251                 info1->dns_domain_name  = talloc_strdup(mem_ctx, dns_name);
 252                 if (!info1->dns_domain_name) {
 253                         wret = WERR_NOMEM;
 254                 }
 255         }
 256         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 257         return wret;
 258 }
 259
 260 /* Subcase of CrackNames, for the userPrincipalName */
 261
 262 static WERROR DsCrackNameUPN(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 263                              struct smb_krb5_context *smb_krb5_context,
 264                              uint32_t format_flags, enum drsuapi_DsNameFormat format_offered,
 265                              enum drsuapi_DsNameFormat format_desired,
 266                              const char *name, struct drsuapi_DsNameInfo1 *info1)
 267 {
 268         int ldb_ret;
 269         WERROR status;
 270         const char *domain_filter = NULL;
 271         const char *result_filter = NULL;
 272         krb5_error_code ret;
 273         krb5_principal principal;
 274         const char *realm;
 275         char *unparsed_name_short;
 276         const char *domain_attrs[] = { NULL };
 277         struct ldb_result *domain_res = NULL;
 278
 279         /* Prevent recursion */
 280         if (!name) {
 281                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 282                 return WERR_OK;
 283         }
 284
 285         ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
 286                                     KRB5_PRINCIPAL_PARSE_REQUIRE_REALM, &principal);
 287         if (ret) {
 288                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 289                 return WERR_OK;
 290         }
 291
 292         realm = smb_krb5_principal_get_realm(smb_krb5_context->krb5_context,
 293                                              principal);
 294
 295         ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
 296                              samdb_partitions_dn(sam_ctx, mem_ctx),
 297                              LDB_SCOPE_ONELEVEL,
 298                              domain_attrs,
 299                              "(&(objectClass=crossRef)(|(dnsRoot=%s)(netbiosName=%s))(systemFlags:%s:=%u))",
 300                              ldb_binary_encode_string(mem_ctx, realm),
 301                              ldb_binary_encode_string(mem_ctx, realm),
 302                              LDB_OID_COMPARATOR_AND,
 303                              SYSTEM_FLAG_CR_NTDS_DOMAIN);
 304
 305         if (ldb_ret != LDB_SUCCESS) {
 306                 DEBUG(2, ("DsCrackNameUPN domain ref search failed: %s\n", ldb_errstring(sam_ctx)));
 307                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 308                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 309                 return WERR_OK;
 310         }
 311
 312         switch (domain_res->count) {
 313         case 1:
 314                 break;
 315         case 0:
 316                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 317                 return dns_domain_from_principal(mem_ctx, smb_krb5_context,
 318                                                  name, info1);
 319         default:
 320                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 321                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 322                 return WERR_OK;
 323         }
 324
 325         ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 326                                       KRB5_PRINCIPAL_UNPARSE_NO_REALM, &unparsed_name_short);
 327         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 328
 329         if (ret) {
 330                 free(unparsed_name_short);
 331                 return WERR_NOMEM;
 332         }
 333
 334         /* This may need to be extended for more userPrincipalName variations */
 335         result_filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
 336                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short));
 337
 338         domain_filter = talloc_asprintf(mem_ctx, "(distinguishedName=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
 339
 340         if (!result_filter || !domain_filter) {
 341                 free(unparsed_name_short);
 342                 return WERR_NOMEM;
 343         }
 344         status = DsCrackNameOneFilter(sam_ctx, mem_ctx,
 345                                       smb_krb5_context,
 346                                       format_flags, format_offered, format_desired,
 347                                       NULL, unparsed_name_short, domain_filter, result_filter,
 348                                       info1, LDB_SCOPE_SUBTREE, NULL);
 349         free(unparsed_name_short);
 350
 351         return status;
 352 }
 353
 354 /*
 355  * This function will workout the filtering parameter in order to be able to do
 356  * the adapted search when the incomming format is format_functional.
 357  * This boils down to defining the search_dn (passed as pointer to ldb_dn *) and the
 358  * ldap filter request.
 359  * Main input parameters are:
 360  * * name, which is the portion of the functional name after the
 361  * first '/'.
 362  * * domain_filter, which is a ldap search filter used to find the NC DN given the
 363  * function name to crack.
 364  */
 365 static WERROR get_format_functional_filtering_param(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 366                         char *name, struct drsuapi_DsNameInfo1 *info1,
 367                         struct ldb_dn **psearch_dn, const char *domain_filter, const char **presult_filter)
 368 {
 369         struct ldb_result *domain_res = NULL;
 370         const char * const domain_attrs[] = {"ncName", NULL};
 371         struct ldb_dn *partitions_basedn = samdb_partitions_dn(sam_ctx, mem_ctx);
 372         int ldb_ret;
 373         char *account,  *s, *result_filter = NULL;
 374         struct ldb_dn *search_dn = NULL;
 375
 376         *psearch_dn = NULL;
 377         *presult_filter = NULL;
 378
 379         ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
 380                                 partitions_basedn,
 381                                 LDB_SCOPE_ONELEVEL,
 382                                 domain_attrs,
 383                                 "%s", domain_filter);
 384
 385         if (ldb_ret != LDB_SUCCESS) {
 386                 DEBUG(2, ("DsCrackNameOne domain ref search failed: %s\n", ldb_errstring(sam_ctx)));
 387                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 388                 return WERR_FOOBAR;
 389         }
 390
 391         if (domain_res->count == 1) {
 392                 struct ldb_dn *tmp_dn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
 393                 const char * const name_attrs[] = {"name", NULL};
 394
 395                 account = name;
 396                 s = strchr(account, '/');
 397                 while(s) {
 398                         s[0] = '\0';
 399                         s++;
 400                         talloc_free(domain_res);
 401
 402                         ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
 403                                                 tmp_dn,
 404                                                 LDB_SCOPE_ONELEVEL,
 405                                                 name_attrs,
 406                                                 "name=%s", account);
 407
 408                         if (ldb_ret != LDB_SUCCESS) {
 409                                 DEBUG(2, ("DsCrackNameOne domain ref search failed: %s\n", ldb_errstring(sam_ctx)));
 410                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 411                                 return WERR_OK;
 412                         }
 413                         switch (domain_res->count) {
 414                         case 1:
 415                                 break;
 416                         case 0:
 417                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 418                                 return WERR_OK;
 419                         default:
 420                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 421                                 return WERR_OK;
 422                         }
 423
 424                         talloc_free(tmp_dn);
 425                         tmp_dn = talloc_steal(mem_ctx, domain_res->msgs[0]->dn);
 426                         talloc_free(domain_res);
 427                         search_dn = tmp_dn;
 428                         account = s;
 429                         s = strchr(account, '/');
 430                 }
 431                 account = ldb_binary_encode_string(mem_ctx, account);
 432                 W_ERROR_HAVE_NO_MEMORY(account);
 433                 result_filter = talloc_asprintf(mem_ctx, "(name=%s)",
 434                                                 account);
 435                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 436         }
 437         *psearch_dn = search_dn;
 438         *presult_filter = result_filter;
 439         return WERR_OK;
 440 }
 441
 442 /* Crack a single 'name', from format_offered into format_desired, returning the result in info1 */
 443
 444 WERROR DsCrackNameOneName(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 445                           uint32_t format_flags, enum drsuapi_DsNameFormat format_offered,
 446                           enum drsuapi_DsNameFormat format_desired,
 447                           const char *name, struct drsuapi_DsNameInfo1 *info1)
 448 {
 449         krb5_error_code ret;
 450         const char *domain_filter = NULL;
 451         const char *result_filter = NULL;
 452         struct ldb_dn *name_dn = NULL;
 453         struct ldb_dn *search_dn = NULL;
 454
 455         struct smb_krb5_context *smb_krb5_context = NULL;
 456         int scope = LDB_SCOPE_SUBTREE;
 457
 458         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 459         info1->dns_domain_name = NULL;
 460         info1->result_name = NULL;
 461
 462         if (!name) {
 463                 return WERR_INVALID_PARAM;
 464         }
 465
 466         /* TODO: - fill the correct names in all cases!
 467          *       - handle format_flags
 468          */
 469
 470         /* here we need to set the domain_filter and/or the result_filter */
 471         switch (format_offered) {
 472         case DRSUAPI_DS_NAME_FORMAT_UNKNOWN:
 473         {
 474                 unsigned int i;
 475                 enum drsuapi_DsNameFormat formats[] = {
 476                         DRSUAPI_DS_NAME_FORMAT_FQDN_1779, DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL,
 477                         DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT, DRSUAPI_DS_NAME_FORMAT_CANONICAL,
 478                         DRSUAPI_DS_NAME_FORMAT_GUID, DRSUAPI_DS_NAME_FORMAT_DISPLAY,
 479                         DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL,
 480                         DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY,
 481                         DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX
 482                 };
 483                 WERROR werr;
 484                 for (i=0; i < ARRAY_SIZE(formats); i++) {
 485                         werr = DsCrackNameOneName(sam_ctx, mem_ctx, format_flags, formats[i], format_desired, name, info1);
 486                         if (!W_ERROR_IS_OK(werr)) {
 487                                 return werr;
 488                         }
 489                         if (info1->status != DRSUAPI_DS_NAME_STATUS_NOT_FOUND) {
 490                                 return werr;
 491                         }
 492                 }
 493                 return werr;
 494         }
 495
 496         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 497         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 498         {
 499                 char *str, *s, *account;
 500                 scope = LDB_SCOPE_ONELEVEL;
 501
 502                 if (strlen(name) == 0) {
 503                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 504                         return WERR_OK;
 505                 }
 506
 507                 str = talloc_strdup(mem_ctx, name);
 508                 W_ERROR_HAVE_NO_MEMORY(str);
 509
 510                 if (format_offered == DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX) {
 511                         /* Look backwards for the \n, and replace it with / */
 512                         s = strrchr(str, '\n');
 513                         if (!s) {
 514                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 515                                 return WERR_OK;
 516                         }
 517                         s[0] = '/';
 518                 }
 519
 520                 s = strchr(str, '/');
 521                 if (!s) {
 522                         /* there must be at least one / */
 523                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 524                         return WERR_OK;
 525                 }
 526
 527                 s[0] = '\0';
 528                 s++;
 529
 530                 domain_filter = talloc_asprintf(mem_ctx, "(&(objectClass=crossRef)(dnsRoot=%s)(systemFlags:%s:=%u))",
 531                                                 ldb_binary_encode_string(mem_ctx, str),
 532                                                 LDB_OID_COMPARATOR_AND,
 533                                                 SYSTEM_FLAG_CR_NTDS_DOMAIN);
 534                 W_ERROR_HAVE_NO_MEMORY(domain_filter);
 535
 536                 /* There may not be anything after the domain component (search for the domain itself) */
 537                 account = s;
 538                 if (account && *account) {
 539                         WERROR werr = get_format_functional_filtering_param(sam_ctx,
 540                                                                                 mem_ctx,
 541                                                                                 account,
 542                                                                                 info1,
 543                                                                                 &search_dn,
 544                                                                                 domain_filter,
 545                                                                                 &result_filter);
 546                         if (!W_ERROR_IS_OK(werr)) {
 547                                 return werr;
 548                         }
 549                         if (info1->status != DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR)
 550                                 return WERR_OK;
 551                 }
 552                 break;
 553         }
 554         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
 555                 char *p;
 556                 char *domain;
 557                 const char *account = NULL;
 558
 559                 domain = talloc_strdup(mem_ctx, name);
 560                 W_ERROR_HAVE_NO_MEMORY(domain);
 561
 562                 p = strchr(domain, '\\');
 563                 if (!p) {
 564                         /* invalid input format */
 565                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 566                         return WERR_OK;
 567                 }
 568                 p[0] = '\0';
 569
 570                 if (p[1]) {
 571                         account = &p[1];
 572                 }
 573
 574                 domain_filter = talloc_asprintf(mem_ctx,
 575                                                 "(&(objectClass=crossRef)(|(dnsRoot=%s)(netbiosName=%s))(systemFlags:%s:=%u))",
 576                                                 ldb_binary_encode_string(mem_ctx, domain),
 577                                                 ldb_binary_encode_string(mem_ctx, domain),
 578                                                 LDB_OID_COMPARATOR_AND,
 579                                                 SYSTEM_FLAG_CR_NTDS_DOMAIN);
 580                 W_ERROR_HAVE_NO_MEMORY(domain_filter);
 581                 if (account) {
 582                         result_filter = talloc_asprintf(mem_ctx, "(sAMAccountName=%s)",
 583                                                         ldb_binary_encode_string(mem_ctx, account));
 584                         W_ERROR_HAVE_NO_MEMORY(result_filter);
 585                 }
 586
 587                 talloc_free(domain);
 588                 break;
 589         }
 590
 591                 /* A LDAP DN as a string */
 592         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779: {
 593                 domain_filter = NULL;
 594                 name_dn = ldb_dn_new(mem_ctx, sam_ctx, name);
 595                 if (! ldb_dn_validate(name_dn)) {
 596                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 597                         return WERR_OK;
 598                 }
 599                 break;
 600         }
 601
 602                 /* A GUID as a string */
 603         case DRSUAPI_DS_NAME_FORMAT_GUID: {
 604                 struct GUID guid;
 605                 char *ldap_guid;
 606                 NTSTATUS nt_status;
 607                 domain_filter = NULL;
 608
 609                 nt_status = GUID_from_string(name, &guid);
 610                 if (!NT_STATUS_IS_OK(nt_status)) {
 611                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 612                         return WERR_OK;
 613                 }
 614
 615                 ldap_guid = ldap_encode_ndr_GUID(mem_ctx, &guid);
 616                 if (!ldap_guid) {
 617                         return WERR_NOMEM;
 618                 }
 619                 result_filter = talloc_asprintf(mem_ctx, "(objectGUID=%s)",
 620                                                 ldap_guid);
 621                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 622                 break;
 623         }
 624         case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
 625                 domain_filter = NULL;
 626
 627                 result_filter = talloc_asprintf(mem_ctx, "(|(displayName=%s)(samAccountName=%s))",
 628                                                 ldb_binary_encode_string(mem_ctx, name),
 629                                                 ldb_binary_encode_string(mem_ctx, name));
 630                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 631                 break;
 632         }
 633
 634                 /* A S-1234-5678 style string */
 635         case DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY: {
 636                 struct dom_sid *sid = dom_sid_parse_talloc(mem_ctx, name);
 637                 char *ldap_sid;
 638
 639                 domain_filter = NULL;
 640                 if (!sid) {
 641                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 642                         return WERR_OK;
 643                 }
 644                 ldap_sid = ldap_encode_ndr_dom_sid(mem_ctx,
 645                                                    sid);
 646                 if (!ldap_sid) {
 647                         return WERR_NOMEM;
 648                 }
 649                 result_filter = talloc_asprintf(mem_ctx, "(objectSid=%s)",
 650                                                 ldap_sid);
 651                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 652                 break;
 653         }
 654         case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL: {
 655                 krb5_principal principal;
 656                 char *unparsed_name;
 657
 658                 ret = smb_krb5_init_context(mem_ctx,
 659                                             ldb_get_event_context(sam_ctx),
 660                                             (struct loadparm_context *)ldb_get_opaque(sam_ctx, "loadparm"),
 661                                             &smb_krb5_context);
 662
 663                 if (ret) {
 664                         return WERR_NOMEM;
 665                 }
 666
 667                 /* Ensure we reject compleate junk first */
 668                 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
 669                 if (ret) {
 670                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 671                         return WERR_OK;
 672                 }
 673
 674                 domain_filter = NULL;
 675
 676                 /* By getting the unparsed name here, we ensure the escaping is correct (and trust the client less) */
 677                 ret = krb5_unparse_name(smb_krb5_context->krb5_context, principal, &unparsed_name);
 678                 if (ret) {
 679                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 680                         return WERR_NOMEM;
 681                 }
 682
 683                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 684
 685                 /* The ldb_binary_encode_string() here avoid LDAP filter injection attacks */
 686                 result_filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(userPrincipalName=%s))",
 687                                                 ldb_binary_encode_string(mem_ctx, unparsed_name));
 688
 689                 free(unparsed_name);
 690                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 691                 break;
 692         }
 693         case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
 694                 krb5_principal principal;
 695                 char *unparsed_name_short;
 696                 const krb5_data *component;
 697                 char *service;
 698
 699                 ret = smb_krb5_init_context(mem_ctx,
 700                                             ldb_get_event_context(sam_ctx),
 701                                             (struct loadparm_context *)ldb_get_opaque(sam_ctx, "loadparm"),
 702                                             &smb_krb5_context);
 703
 704                 if (ret) {
 705                         return WERR_NOMEM;
 706                 }
 707
 708                 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
 709                 if (ret == 0 &&
 710                     krb5_princ_size(smb_krb5_context->krb5_context,
 711                                                         principal) < 2) {
 712                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 713                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 714                         return WERR_OK;
 715                 } else if (ret == 0) {
 716                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 717                 }
 718                 ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
 719                                             KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
 720                 if (ret) {
 721                         return dns_domain_from_principal(mem_ctx, smb_krb5_context,
 722                                                          name, info1);
 723                 }
 724
 725                 domain_filter = NULL;
 726
 727                 ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 728                                               KRB5_PRINCIPAL_UNPARSE_NO_REALM, &unparsed_name_short);
 729                 if (ret) {
 730                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 731                         return WERR_NOMEM;
 732                 }
 733
 734                 component = krb5_princ_component(smb_krb5_context->krb5_context,
 735                                                  principal, 0);
 736                 service = (char *)component->data;
 737                 if ((krb5_princ_size(smb_krb5_context->krb5_context,
 738                                                         principal) == 2) &&
 739                         (strcasecmp(service, "host") == 0)) {
 740                         /* the 'cn' attribute is just the leading part of the name */
 741                         char *computer_name;
 742                         component = krb5_princ_component(
 743                                                 smb_krb5_context->krb5_context,
 744                                                 principal, 1);
 745                         computer_name = talloc_strndup(mem_ctx, (char *)component->data,
 746                                                         strcspn((char *)component->data, "."));
 747                         if (computer_name == NULL) {
 748                                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 749                                 free(unparsed_name_short);
 750                                 return WERR_NOMEM;
 751                         }
 752
 753                         result_filter = talloc_asprintf(mem_ctx, "(|(&(servicePrincipalName=%s)(objectClass=user))(&(cn=%s)(objectClass=computer)))",
 754                                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short),
 755                                                         ldb_binary_encode_string(mem_ctx, computer_name));
 756                 } else {
 757                         result_filter = talloc_asprintf(mem_ctx, "(&(servicePrincipalName=%s)(objectClass=user))",
 758                                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short));
 759                 }
 760                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 761                 free(unparsed_name_short);
 762                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 763
 764                 break;
 765         }
 766         default: {
 767                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 768                 return WERR_OK;
 769         }
 770         }
 771
 772         if (format_flags & DRSUAPI_DS_NAME_FLAG_SYNTACTICAL_ONLY) {
 773                 return DsCrackNameOneSyntactical(mem_ctx, format_offered, format_desired,
 774                                                  name_dn, name, info1);
 775         }
 776
 777         return DsCrackNameOneFilter(sam_ctx, mem_ctx,
 778                                     smb_krb5_context,
 779                                     format_flags, format_offered, format_desired,
 780                                     name_dn, name,
 781                                     domain_filter, result_filter,
 782                                     info1, scope, search_dn);
 783 }
 784
 785 /* Subcase of CrackNames.  It is possible to translate a LDAP-style DN
 786  * (FQDN_1779) into a canoical name without actually searching the
 787  * database */
 788
 789 static WERROR DsCrackNameOneSyntactical(TALLOC_CTX *mem_ctx,
 790                                         enum drsuapi_DsNameFormat format_offered,
 791                                         enum drsuapi_DsNameFormat format_desired,
 792                                         struct ldb_dn *name_dn, const char *name,
 793                                         struct drsuapi_DsNameInfo1 *info1)
 794 {
 795         char *cracked;
 796         if (format_offered != DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
 797                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
 798                 return WERR_OK;
 799         }
 800
 801         switch (format_desired) {
 802         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 803                 cracked = ldb_dn_canonical_string(mem_ctx, name_dn);
 804                 break;
 805         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 806                 cracked = ldb_dn_canonical_ex_string(mem_ctx, name_dn);
 807                 break;
 808         default:
 809                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
 810                 return WERR_OK;
 811         }
 812         info1->status = DRSUAPI_DS_NAME_STATUS_OK;
 813         info1->result_name      = cracked;
 814         if (!cracked) {
 815                 return WERR_NOMEM;
 816         }
 817
 818         return WERR_OK;
 819 }
 820
 821 /* Given a filter for the domain, and one for the result, perform the
 822  * ldb search. The format offered and desired flags change the
 823  * behaviours, including what attributes to return.
 824  *
 825  * The smb_krb5_context is required because we use the krb5 libs for principal parsing
 826  */
 827
 828 static WERROR DsCrackNameOneFilter(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 829                                    struct smb_krb5_context *smb_krb5_context,
 830                                    uint32_t format_flags, enum drsuapi_DsNameFormat format_offered,
 831                                    enum drsuapi_DsNameFormat format_desired,
 832                                    struct ldb_dn *name_dn, const char *name,
 833                                    const char *domain_filter, const char *result_filter,
 834                                    struct drsuapi_DsNameInfo1 *info1,
 835                                    int scope, struct ldb_dn *search_dn)
 836 {
 837         int ldb_ret;
 838         struct ldb_result *domain_res = NULL;
 839         const char * const *domain_attrs;
 840         const char * const *result_attrs;
 841         struct ldb_message **result_res = NULL;
 842         struct ldb_message *result = NULL;
 843         int i;
 844         char *p;
 845         struct ldb_dn *partitions_basedn = samdb_partitions_dn(sam_ctx, mem_ctx);
 846
 847         const char * const _domain_attrs_1779[] = { "ncName", "dnsRoot", NULL};
 848         const char * const _result_attrs_null[] = { NULL };
 849
 850         const char * const _domain_attrs_canonical[] = { "ncName", "dnsRoot", NULL};
 851         const char * const _result_attrs_canonical[] = { "canonicalName", NULL };
 852
 853         const char * const _domain_attrs_nt4[] = { "ncName", "dnsRoot", "nETBIOSName", NULL};
 854         const char * const _result_attrs_nt4[] = { "sAMAccountName", "objectSid", "objectClass", NULL};
 855
 856         const char * const _domain_attrs_guid[] = { "ncName", "dnsRoot", NULL};
 857         const char * const _result_attrs_guid[] = { "objectGUID", NULL};
 858
 859         const char * const _domain_attrs_display[] = { "ncName", "dnsRoot", NULL};
 860         const char * const _result_attrs_display[] = { "displayName", "samAccountName", NULL};
 861
 862         const char * const _domain_attrs_none[] = { "ncName", "dnsRoot" , NULL};
 863         const char * const _result_attrs_none[] = { NULL};
 864
 865         /* here we need to set the attrs lists for domain and result lookups */
 866         switch (format_desired) {
 867         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779:
 868         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 869                 domain_attrs = _domain_attrs_1779;
 870                 result_attrs = _result_attrs_null;
 871                 break;
 872         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 873                 domain_attrs = _domain_attrs_canonical;
 874                 result_attrs = _result_attrs_canonical;
 875                 break;
 876         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT:
 877                 domain_attrs = _domain_attrs_nt4;
 878                 result_attrs = _result_attrs_nt4;
 879                 break;
 880         case DRSUAPI_DS_NAME_FORMAT_GUID:
 881                 domain_attrs = _domain_attrs_guid;
 882                 result_attrs = _result_attrs_guid;
 883                 break;
 884         case DRSUAPI_DS_NAME_FORMAT_DISPLAY:
 885                 domain_attrs = _domain_attrs_display;
 886                 result_attrs = _result_attrs_display;
 887                 break;
 888         default:
 889                 domain_attrs = _domain_attrs_none;
 890                 result_attrs = _result_attrs_none;
 891                 break;
 892         }
 893
 894         if (domain_filter) {
 895                 /* if we have a domain_filter look it up and set the result_basedn and the dns_domain_name */
 896                 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
 897                                              partitions_basedn,
 898                                              LDB_SCOPE_ONELEVEL,
 899                                              domain_attrs,
 900                                              "%s", domain_filter);
 901
 902                 if (ldb_ret != LDB_SUCCESS) {
 903                         DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s\n", ldb_errstring(sam_ctx)));
 904                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 905                         return WERR_OK;
 906                 }
 907
 908                 switch (domain_res->count) {
 909                 case 1:
 910                         break;
 911                 case 0:
 912                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 913                         return WERR_OK;
 914                 default:
 915                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 916                         return WERR_OK;
 917                 }
 918
 919                 info1->dns_domain_name  = ldb_msg_find_attr_as_string(domain_res->msgs[0], "dnsRoot", NULL);
 920                 W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
 921                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 922         } else {
 923                 info1->dns_domain_name  = NULL;
 924                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 925         }
 926
 927         if (result_filter) {
 928                 int ret;
 929                 struct ldb_result *res;
 930                 uint32_t dsdb_flags = 0;
 931                 struct ldb_dn *real_search_dn;
 932
 933                 if (domain_res) {
 934                         if (!search_dn) {
 935                                 struct ldb_dn *tmp_dn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
 936                                 real_search_dn = tmp_dn;
 937                         } else {
 938                                 real_search_dn = search_dn;
 939                         }
 940                 } else {
 941                         dsdb_flags = DSDB_SEARCH_SEARCH_ALL_PARTITIONS;
 942                         real_search_dn = NULL;
 943                 }
 944                 if (format_desired == DRSUAPI_DS_NAME_FORMAT_GUID){
 945                          dsdb_flags = dsdb_flags| DSDB_SEARCH_SHOW_DELETED;
 946                 }
 947
 948                 /* search with the 'phantom root' flag */
 949                 ret = dsdb_search(sam_ctx, mem_ctx, &res,
 950                                   real_search_dn,
 951                                   scope,
 952                                   result_attrs,
 953                                   dsdb_flags,
 954                                   "%s", result_filter);
 955                 if (ret != LDB_SUCCESS) {
 956                         DEBUG(2, ("DsCrackNameOneFilter phantom root search failed: %s\n",
 957                                   ldb_errstring(sam_ctx)));
 958                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 959                         return WERR_OK;
 960                 }
 961
 962                 ldb_ret = res->count;
 963                 result_res = res->msgs;
 964         } else if (format_offered == DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
 965                 ldb_ret = gendb_search_dn(sam_ctx, mem_ctx, name_dn, &result_res,
 966                                           result_attrs);
 967         } else if (domain_res) {
 968                 name_dn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
 969                 ldb_ret = gendb_search_dn(sam_ctx, mem_ctx, name_dn, &result_res,
 970                                           result_attrs);
 971         } else {
 972                 /* Can't happen */
 973                 DEBUG(0, ("LOGIC ERROR: DsCrackNameOneFilter domain ref search not available: This can't happen...\n"));
 974                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 975                 return WERR_OK;
 976         }
 977
 978         switch (ldb_ret) {
 979         case 1:
 980                 result = result_res[0];
 981                 break;
 982         case 0:
 983                 switch (format_offered) {
 984                 case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL:
 985                         return DsCrackNameSPNAlias(sam_ctx, mem_ctx,
 986                                                    smb_krb5_context,
 987                                                    format_flags, format_offered, format_desired,
 988                                                    name, info1);
 989
 990                 case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL:
 991                         return DsCrackNameUPN(sam_ctx, mem_ctx, smb_krb5_context,
 992                                               format_flags, format_offered, format_desired,
 993                                               name, info1);
 994                 default:
 995                         break;
 996                 }
 997                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 998                 return WERR_OK;
 999         case -1:
1000                 DEBUG(2, ("DsCrackNameOneFilter result search failed: %s\n", ldb_errstring(sam_ctx)));
1001                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1002                 return WERR_OK;
1003         default:
1004                 switch (format_offered) {
1005                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
1006                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
1007                 {
1008                         const char *canonical_name = NULL; /* Not required, but we get warnings... */
1009                         /* We may need to manually filter further */
1010                         for (i = 0; i < ldb_ret; i++) {
1011                                 switch (format_offered) {
1012                                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
1013                                         canonical_name = ldb_dn_canonical_string(mem_ctx, result_res[i]->dn);
1014                                         break;
1015                                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
1016                                         canonical_name = ldb_dn_canonical_ex_string(mem_ctx, result_res[i]->dn);
1017                                         break;
1018                                 default:
1019                                         break;
1020                                 }
1021                                 if (strcasecmp_m(canonical_name, name) == 0) {
1022                                         result = result_res[i];
1023                                         break;
1024                                 }
1025                         }
1026                         if (!result) {
1027                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1028                                 return WERR_OK;
1029                         }
1030                 }
1031                 default:
1032                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1033                         return WERR_OK;
1034                 }
1035         }
1036
1037         info1->dns_domain_name = ldb_dn_canonical_string(mem_ctx, result->dn);
1038         W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
1039         p = strchr(info1->dns_domain_name, '/');
1040         if (p) {
1041                 p[0] = '\0';
1042         }
1043
1044         /* here we can use result and domain_res[0] */
1045         switch (format_desired) {
1046         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779: {
1047                 info1->result_name      = ldb_dn_alloc_linearized(mem_ctx, result->dn);
1048                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1049
1050                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1051                 return WERR_OK;
1052         }
1053         case DRSUAPI_DS_NAME_FORMAT_CANONICAL: {
1054                 info1->result_name      = ldb_msg_find_attr_as_string(result, "canonicalName", NULL);
1055                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1056                 return WERR_OK;
1057         }
1058         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX: {
1059                 /* Not in the virtual ldb attribute */
1060                 return DsCrackNameOneSyntactical(mem_ctx,
1061                                                  DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1062                                                  DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX,
1063                                                  result->dn, name, info1);
1064         }
1065         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
1066
1067                 const struct dom_sid *sid = samdb_result_dom_sid(mem_ctx, result, "objectSid");
1068                 const char *_acc = "", *_dom = "";
1069
1070                 if (samdb_find_attribute(sam_ctx, result, "objectClass", "domain")) {
1071
1072                         ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
1073                                                      partitions_basedn,
1074                                                      LDB_SCOPE_ONELEVEL,
1075                                                      domain_attrs,
1076                                                      "(ncName=%s)", ldb_dn_get_linearized(result->dn));
1077
1078                         if (ldb_ret != LDB_SUCCESS) {
1079                                 DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s\n", ldb_errstring(sam_ctx)));
1080                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1081                                 return WERR_OK;
1082                         }
1083
1084                         switch (domain_res->count) {
1085                         case 1:
1086                                 break;
1087                         case 0:
1088                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1089                                 return WERR_OK;
1090                         default:
1091                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1092                                 return WERR_OK;
1093                         }
1094                         _dom = ldb_msg_find_attr_as_string(domain_res->msgs[0], "nETBIOSName", NULL);
1095                         W_ERROR_HAVE_NO_MEMORY(_dom);
1096                 } else {
1097                         _acc = ldb_msg_find_attr_as_string(result, "sAMAccountName", NULL);
1098                         if (!_acc) {
1099                                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
1100                                 return WERR_OK;
1101                         }
1102                         if (dom_sid_in_domain(dom_sid_parse_talloc(mem_ctx, SID_BUILTIN), sid)) {
1103                                 _dom = "BUILTIN";
1104                         } else {
1105                                 const char *attrs[] = { NULL };
1106                                 struct ldb_result *domain_res2;
1107                                 struct dom_sid *dom_sid = dom_sid_dup(mem_ctx, sid);
1108                                 if (!dom_sid) {
1109                                         return WERR_OK;
1110                                 }
1111                                 dom_sid->num_auths--;
1112                                 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
1113                                                              NULL,
1114                                                              LDB_SCOPE_BASE,
1115                                                              attrs,
1116                                                              "(&(objectSid=%s)(objectClass=domain))",
1117                                                              ldap_encode_ndr_dom_sid(mem_ctx, dom_sid));
1118
1119                                 if (ldb_ret != LDB_SUCCESS) {
1120                                         DEBUG(2, ("DsCrackNameOneFilter domain search failed: %s\n", ldb_errstring(sam_ctx)));
1121                                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1122                                         return WERR_OK;
1123                                 }
1124
1125                                 switch (domain_res->count) {
1126                                 case 1:
1127                                         break;
1128                                 case 0:
1129                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1130                                         return WERR_OK;
1131                                 default:
1132                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1133                                         return WERR_OK;
1134                                 }
1135
1136                                 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res2,
1137                                                              partitions_basedn,
1138                                                              LDB_SCOPE_ONELEVEL,
1139                                                              domain_attrs,
1140                                                              "(ncName=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
1141
1142                                 if (ldb_ret != LDB_SUCCESS) {
1143                                         DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s\n", ldb_errstring(sam_ctx)));
1144                                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1145                                         return WERR_OK;
1146                                 }
1147
1148                                 switch (domain_res2->count) {
1149                                 case 1:
1150                                         break;
1151                                 case 0:
1152                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1153                                         return WERR_OK;
1154                                 default:
1155                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1156                                         return WERR_OK;
1157                                 }
1158                                 _dom = ldb_msg_find_attr_as_string(domain_res2->msgs[0], "nETBIOSName", NULL);
1159                                 W_ERROR_HAVE_NO_MEMORY(_dom);
1160                         }
1161                 }
1162
1163                 info1->result_name      = talloc_asprintf(mem_ctx, "%s\\%s", _dom, _acc);
1164                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1165
1166                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1167                 return WERR_OK;
1168         }
1169         case DRSUAPI_DS_NAME_FORMAT_GUID: {
1170                 struct GUID guid;
1171
1172                 guid = samdb_result_guid(result, "objectGUID");
1173
1174                 info1->result_name      = GUID_string2(mem_ctx, &guid);
1175                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1176
1177                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1178                 return WERR_OK;
1179         }
1180         case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
1181                 info1->result_name      = ldb_msg_find_attr_as_string(result, "displayName", NULL);
1182                 if (!info1->result_name) {
1183                         info1->result_name      = ldb_msg_find_attr_as_string(result, "sAMAccountName", NULL);
1184                 }
1185                 if (!info1->result_name) {
1186                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1187                 } else {
1188                         info1->status = DRSUAPI_DS_NAME_STATUS_OK;
1189                 }
1190                 return WERR_OK;
1191         }
1192         case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
1193                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1194                 return WERR_OK;
1195         }
1196         case DRSUAPI_DS_NAME_FORMAT_DNS_DOMAIN:
1197         case DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY: {
1198                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1199                 return WERR_OK;
1200         }
1201         default:
1202                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
1203                 return WERR_OK;
1204         }
1205 }
1206
1207 /* Given a user Principal Name (such as foo@bar.com),
1208  * return the user and domain DNs.  This is used in the KDC to then
1209  * return the Keys and evaluate policy */
1210
1211 NTSTATUS crack_user_principal_name(struct ldb_context *sam_ctx,
1212                                    TALLOC_CTX *mem_ctx,
1213                                    const char *user_principal_name,
1214                                    struct ldb_dn **user_dn,
1215                                    struct ldb_dn **domain_dn)
1216 {
1217         WERROR werr;
1218         struct drsuapi_DsNameInfo1 info1;
1219         werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1220                                   DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL,
1221                                   DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1222                                   user_principal_name,
1223                                   &info1);
1224         if (!W_ERROR_IS_OK(werr)) {
1225                 return werror_to_ntstatus(werr);
1226         }
1227         switch (info1.status) {
1228         case DRSUAPI_DS_NAME_STATUS_OK:
1229                 break;
1230         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1231         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1232         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1233                 return NT_STATUS_NO_SUCH_USER;
1234         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1235         default:
1236                 return NT_STATUS_UNSUCCESSFUL;
1237         }
1238
1239         *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1240
1241         if (domain_dn) {
1242                 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1243                                           DRSUAPI_DS_NAME_FORMAT_CANONICAL,
1244                                           DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1245                                           talloc_asprintf(mem_ctx, "%s/",
1246                                                           info1.dns_domain_name),
1247                                           &info1);
1248                 if (!W_ERROR_IS_OK(werr)) {
1249                         return werror_to_ntstatus(werr);
1250                 }
1251                 switch (info1.status) {
1252                 case DRSUAPI_DS_NAME_STATUS_OK:
1253                         break;
1254                 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1255                 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1256                 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1257                         return NT_STATUS_NO_SUCH_USER;
1258                 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1259                 default:
1260                         return NT_STATUS_UNSUCCESSFUL;
1261                 }
1262
1263                 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1264         }
1265
1266         return NT_STATUS_OK;
1267 }
1268
1269 /* Given a Service Principal Name (such as host/foo.bar.com@BAR.COM),
1270  * return the user and domain DNs.  This is used in the KDC to then
1271  * return the Keys and evaluate policy */
1272
1273 NTSTATUS crack_service_principal_name(struct ldb_context *sam_ctx,
1274                                       TALLOC_CTX *mem_ctx,
1275                                       const char *service_principal_name,
1276                                       struct ldb_dn **user_dn,
1277                                       struct ldb_dn **domain_dn)
1278 {
1279         WERROR werr;
1280         struct drsuapi_DsNameInfo1 info1;
1281         werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1282                                   DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL,
1283                                   DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1284                                   service_principal_name,
1285                                   &info1);
1286         if (!W_ERROR_IS_OK(werr)) {
1287                 return werror_to_ntstatus(werr);
1288         }
1289         switch (info1.status) {
1290         case DRSUAPI_DS_NAME_STATUS_OK:
1291                 break;
1292         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1293         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1294         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1295                 return NT_STATUS_NO_SUCH_USER;
1296         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1297         default:
1298                 return NT_STATUS_UNSUCCESSFUL;
1299         }
1300
1301         *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1302
1303         if (domain_dn) {
1304                 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1305                                           DRSUAPI_DS_NAME_FORMAT_CANONICAL,
1306                                           DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1307                                           talloc_asprintf(mem_ctx, "%s/",
1308                                                           info1.dns_domain_name),
1309                                           &info1);
1310                 if (!W_ERROR_IS_OK(werr)) {
1311                         return werror_to_ntstatus(werr);
1312                 }
1313                 switch (info1.status) {
1314                 case DRSUAPI_DS_NAME_STATUS_OK:
1315                         break;
1316                 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1317                 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1318                 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1319                         return NT_STATUS_NO_SUCH_USER;
1320                 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1321                 default:
1322                         return NT_STATUS_UNSUCCESSFUL;
1323                 }
1324
1325                 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1326         }
1327
1328         return NT_STATUS_OK;
1329 }
1330
1331 NTSTATUS crack_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1332                                 struct tevent_context *ev_ctx,
1333                                 struct loadparm_context *lp_ctx,
1334                                 enum drsuapi_DsNameFormat format_offered,
1335                                 const char *name,
1336                                 const char **nt4_domain, const char **nt4_account)
1337 {
1338         WERROR werr;
1339         struct drsuapi_DsNameInfo1 info1;
1340         struct ldb_context *ldb;
1341         char *p;
1342
1343         /* Handle anonymous bind */
1344         if (!name || !*name) {
1345                 *nt4_domain = "";
1346                 *nt4_account = "";
1347                 return NT_STATUS_OK;
1348         }
1349
1350         ldb = samdb_connect(mem_ctx, ev_ctx, lp_ctx, system_session(lp_ctx), 0);
1351         if (ldb == NULL) {
1352                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
1353         }
1354
1355         werr = DsCrackNameOneName(ldb, mem_ctx, 0,
1356                                   format_offered,
1357                                   DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT,
1358                                   name,
1359                                   &info1);
1360         if (!W_ERROR_IS_OK(werr)) {
1361                 return werror_to_ntstatus(werr);
1362         }
1363         switch (info1.status) {
1364         case DRSUAPI_DS_NAME_STATUS_OK:
1365                 break;
1366         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1367         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1368         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1369                 return NT_STATUS_NO_SUCH_USER;
1370         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1371         default:
1372                 return NT_STATUS_UNSUCCESSFUL;
1373         }
1374
1375         *nt4_domain = talloc_strdup(mem_ctx, info1.result_name);
1376         if (*nt4_domain == NULL) {
1377                 return NT_STATUS_NO_MEMORY;
1378         }
1379
1380         p = strchr(*nt4_domain, '\\');
1381         if (!p) {
1382                 return NT_STATUS_INVALID_PARAMETER;
1383         }
1384         p[0] = '\0';
1385
1386         *nt4_account = talloc_strdup(mem_ctx, &p[1]);
1387         if (*nt4_account == NULL) {
1388                 return NT_STATUS_NO_MEMORY;
1389         }
1390
1391         return NT_STATUS_OK;
1392 }
1393
1394 NTSTATUS crack_auto_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1395                                      struct tevent_context *ev_ctx,
1396                                      struct loadparm_context *lp_ctx,
1397                                      const char *name,
1398                                      const char **nt4_domain,
1399                                      const char **nt4_account)
1400 {
1401         enum drsuapi_DsNameFormat format_offered = DRSUAPI_DS_NAME_FORMAT_UNKNOWN;
1402
1403         /* Handle anonymous bind */
1404         if (!name || !*name) {
1405                 *nt4_domain = "";
1406                 *nt4_account = "";
1407                 return NT_STATUS_OK;
1408         }
1409
1410         if (strchr_m(name, '=')) {
1411                 format_offered = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
1412         } else if (strchr_m(name, '@')) {
1413                 format_offered = DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL;
1414         } else if (strchr_m(name, '\\')) {
1415                 format_offered = DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT;
1416         } else if (strchr_m(name, '/')) {
1417                 format_offered = DRSUAPI_DS_NAME_FORMAT_CANONICAL;
1418         } else {
1419                 return NT_STATUS_NO_SUCH_USER;
1420         }
1421
1422         return crack_name_to_nt4_name(mem_ctx, ev_ctx, lp_ctx, format_offered, name, nt4_domain, nt4_account);
1423 }
1424
1425
1426 WERROR dcesrv_drsuapi_ListRoles(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
1427                                 const struct drsuapi_DsNameRequest1 *req1,
1428                                 struct drsuapi_DsNameCtr1 **ctr1)
1429 {
1430         struct drsuapi_DsNameInfo1 *names;
1431         uint32_t i;
1432         uint32_t count = 5;/*number of fsmo role owners we are going to return*/
1433
1434         *ctr1 = talloc(mem_ctx, struct drsuapi_DsNameCtr1);
1435         W_ERROR_HAVE_NO_MEMORY(*ctr1);
1436         names = talloc_array(mem_ctx, struct drsuapi_DsNameInfo1, count);
1437         W_ERROR_HAVE_NO_MEMORY(names);
1438
1439         for (i = 0; i < count; i++) {
1440                 WERROR werr;
1441                 struct ldb_dn *role_owner_dn, *fsmo_role_dn, *server_dn;
1442                 werr = dsdb_get_fsmo_role_info(mem_ctx, sam_ctx, i,
1443                                                &fsmo_role_dn, &role_owner_dn);
1444                 if(!W_ERROR_IS_OK(werr)) {
1445                         return werr;
1446                 }
1447                 server_dn = ldb_dn_copy(mem_ctx, role_owner_dn);
1448                 ldb_dn_remove_child_components(server_dn, 1);
1449                 names[i].status = DRSUAPI_DS_NAME_STATUS_OK;
1450                 names[i].dns_domain_name = samdb_dn_to_dnshostname(sam_ctx, mem_ctx,
1451                                                                    server_dn);
1452                 if(!names[i].dns_domain_name) {
1453                         DEBUG(4, ("list_roles: Failed to find dNSHostName for server %s\n",
1454                                   ldb_dn_get_linearized(server_dn)));
1455                 }
1456                 names[i].result_name = talloc_strdup(mem_ctx, ldb_dn_get_linearized(role_owner_dn));
1457         }
1458
1459         (*ctr1)->count = count;
1460         (*ctr1)->array = names;
1461
1462         return WERR_OK;
1463 }
1464
1465 WERROR dcesrv_drsuapi_CrackNamesByNameFormat(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
1466                                              const struct drsuapi_DsNameRequest1 *req1,
1467                                              struct drsuapi_DsNameCtr1 **ctr1)
1468 {
1469         struct drsuapi_DsNameInfo1 *names;
1470         uint32_t i, count;
1471         WERROR status;
1472
1473         *ctr1 = talloc(mem_ctx, struct drsuapi_DsNameCtr1);
1474         W_ERROR_HAVE_NO_MEMORY(*ctr1);
1475
1476         count = req1->count;
1477         names = talloc_array(mem_ctx, struct drsuapi_DsNameInfo1, count);
1478         W_ERROR_HAVE_NO_MEMORY(names);
1479
1480         for (i=0; i < count; i++) {
1481                 status = DsCrackNameOneName(sam_ctx, mem_ctx,
1482                                             req1->format_flags,
1483                                             req1->format_offered,
1484                                             req1->format_desired,
1485                                             req1->names[i].str,
1486                                             &names[i]);
1487                 if (!W_ERROR_IS_OK(status)) {
1488                         return status;
1489                 }
1490         }
1491
1492         (*ctr1)->count = count;
1493         (*ctr1)->array = names;
1494
1495         return WERR_OK;
1496 }
1497
1498 WERROR dcesrv_drsuapi_ListInfoServer(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
1499                                      const struct drsuapi_DsNameRequest1 *req1,
1500                                      struct drsuapi_DsNameCtr1 **_ctr1)
1501 {
1502         struct drsuapi_DsNameInfo1 *names;
1503         struct ldb_result *res;
1504         struct ldb_dn *server_dn, *dn;
1505         struct drsuapi_DsNameCtr1 *ctr1;
1506         int ret, i;
1507         const char *str;
1508         const char *attrs[] = {
1509                 "dn",
1510                 "dNSHostName",
1511                 "serverReference",
1512                 NULL
1513         };
1514
1515         *_ctr1 = NULL;
1516
1517         ctr1 = talloc_zero(mem_ctx, struct drsuapi_DsNameCtr1);
1518         W_ERROR_HAVE_NO_MEMORY(ctr1);
1519
1520         /*
1521          * No magic value here, we have to return 3 entries according to the
1522          * MS-DRSR.pdf
1523          */
1524         ctr1->count = 3;
1525         names = talloc_zero_array(ctr1, struct drsuapi_DsNameInfo1,
1526                                   ctr1->count);
1527         W_ERROR_HAVE_NO_MEMORY(names);
1528         ctr1->array = names;
1529
1530         for (i=0; i < ctr1->count; i++) {
1531                 names[i].status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1532         }
1533         *_ctr1 = ctr1;
1534
1535         if (req1->count != 1) {
1536                 DEBUG(1, ("Expected a count of 1 for the ListInfoServer crackname \n"));
1537                 return WERR_OK;
1538         }
1539
1540         if (req1->names[0].str == NULL) {
1541                 return WERR_OK;
1542         }
1543
1544         server_dn = ldb_dn_new(mem_ctx, sam_ctx, req1->names[0].str);
1545         W_ERROR_HAVE_NO_MEMORY(server_dn);
1546
1547         ret = ldb_search(sam_ctx, mem_ctx, &res, server_dn, LDB_SCOPE_ONELEVEL,
1548                          NULL, "(objectClass=nTDSDSA)");
1549
1550         if (ret != LDB_SUCCESS) {
1551                 DEBUG(1, ("Search for objectClass=nTDSDSA "
1552                           "returned less than 1 objects\n"));
1553                 return WERR_OK;
1554         }
1555
1556         if (res->count != 1) {
1557                 DEBUG(1, ("Search for objectClass=nTDSDSA "
1558                           "returned less than 1 objects\n"));
1559                 return WERR_OK;
1560         }
1561
1562         if (res->msgs[0]->dn) {
1563                 names[0].result_name = ldb_dn_alloc_linearized(names, res->msgs[0]->dn);
1564                 W_ERROR_HAVE_NO_MEMORY(names[0].result_name);
1565                 names[0].status = DRSUAPI_DS_NAME_STATUS_OK;
1566         }
1567
1568         talloc_free(res);
1569
1570         ret = ldb_search(sam_ctx, mem_ctx, &res, server_dn, LDB_SCOPE_BASE,
1571                          attrs, "(objectClass=*)");
1572         if (ret != LDB_SUCCESS) {
1573                 DEBUG(1, ("Search for objectClass=* on dn %s"
1574                           "returned %s\n", req1->names[0].str,
1575                           ldb_strerror(ret)));
1576                 return WERR_OK;
1577         }
1578
1579         if (res->count != 1) {
1580                 DEBUG(1, ("Search for objectClass=* on dn %s"
1581                           "returned less than 1 objects\n", req1->names[0].str));
1582                 return WERR_OK;
1583         }
1584
1585         str = ldb_msg_find_attr_as_string(res->msgs[0], "dNSHostName", NULL);
1586         if (str != NULL) {
1587                 names[1].result_name = talloc_strdup(names, str);
1588                 W_ERROR_HAVE_NO_MEMORY(names[1].result_name);
1589                 names[1].status = DRSUAPI_DS_NAME_STATUS_OK;
1590         }
1591
1592         dn = ldb_msg_find_attr_as_dn(sam_ctx, mem_ctx, res->msgs[0], "serverReference");
1593         if (dn != NULL) {
1594                 names[2].result_name = ldb_dn_alloc_linearized(names, dn);
1595                 W_ERROR_HAVE_NO_MEMORY(names[2].result_name);
1596                 names[2].status = DRSUAPI_DS_NAME_STATUS_OK;
1597         }
1598
1599         talloc_free(dn);
1600         talloc_free(res);
1601
1602         return WERR_OK;
1603 }