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                 talloc_free(domain_res);
 398                 while(s) {
 399                         s[0] = '\0';
 400                         s++;
 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                         talloc_free(tmp_dn);
 414                         switch (domain_res->count) {
 415                         case 1:
 416                                 break;
 417                         case 0:
 418                                 talloc_free(domain_res);
 419                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 420                                 return WERR_OK;
 421                         default:
 422                                 talloc_free(domain_res);
 423                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 424                                 return WERR_OK;
 425                         }
 426
 427                         tmp_dn = talloc_steal(mem_ctx, domain_res->msgs[0]->dn);
 428                         talloc_free(domain_res);
 429                         search_dn = tmp_dn;
 430                         account = s;
 431                         s = strchr(account, '/');
 432                 }
 433                 account = ldb_binary_encode_string(mem_ctx, account);
 434                 W_ERROR_HAVE_NO_MEMORY(account);
 435                 result_filter = talloc_asprintf(mem_ctx, "(name=%s)",
 436                                                 account);
 437                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 438         }
 439         *psearch_dn = search_dn;
 440         *presult_filter = result_filter;
 441         return WERR_OK;
 442 }
 443
 444 /* Crack a single 'name', from format_offered into format_desired, returning the result in info1 */
 445
 446 WERROR DsCrackNameOneName(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 447                           uint32_t format_flags, enum drsuapi_DsNameFormat format_offered,
 448                           enum drsuapi_DsNameFormat format_desired,
 449                           const char *name, struct drsuapi_DsNameInfo1 *info1)
 450 {
 451         krb5_error_code ret;
 452         const char *domain_filter = NULL;
 453         const char *result_filter = NULL;
 454         struct ldb_dn *name_dn = NULL;
 455         struct ldb_dn *search_dn = NULL;
 456
 457         struct smb_krb5_context *smb_krb5_context = NULL;
 458         int scope = LDB_SCOPE_SUBTREE;
 459
 460         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 461         info1->dns_domain_name = NULL;
 462         info1->result_name = NULL;
 463
 464         if (!name) {
 465                 return WERR_INVALID_PARAM;
 466         }
 467
 468         /* TODO: - fill the correct names in all cases!
 469          *       - handle format_flags
 470          */
 471         if (format_desired == DRSUAPI_DS_NAME_FORMAT_UNKNOWN) {
 472                 return WERR_OK;
 473         }
 474         /* here we need to set the domain_filter and/or the result_filter */
 475         switch (format_offered) {
 476         case DRSUAPI_DS_NAME_FORMAT_UNKNOWN:
 477         {
 478                 unsigned int i;
 479                 enum drsuapi_DsNameFormat formats[] = {
 480                         DRSUAPI_DS_NAME_FORMAT_FQDN_1779, DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL,
 481                         DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT, DRSUAPI_DS_NAME_FORMAT_CANONICAL,
 482                         DRSUAPI_DS_NAME_FORMAT_GUID, DRSUAPI_DS_NAME_FORMAT_DISPLAY,
 483                         DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL,
 484                         DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY,
 485                         DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX
 486                 };
 487                 WERROR werr;
 488                 for (i=0; i < ARRAY_SIZE(formats); i++) {
 489                         werr = DsCrackNameOneName(sam_ctx, mem_ctx, format_flags, formats[i], format_desired, name, info1);
 490                         if (!W_ERROR_IS_OK(werr)) {
 491                                 return werr;
 492                         }
 493                         if (info1->status != DRSUAPI_DS_NAME_STATUS_NOT_FOUND &&
 494                             (formats[i] != DRSUAPI_DS_NAME_FORMAT_CANONICAL ||
 495                              info1->status != DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR))
 496                         {
 497                                 return werr;
 498                         }
 499                 }
 500                 return werr;
 501         }
 502
 503         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 504         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 505         {
 506                 char *str, *s, *account;
 507                 scope = LDB_SCOPE_ONELEVEL;
 508
 509                 if (strlen(name) == 0) {
 510                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 511                         return WERR_OK;
 512                 }
 513
 514                 str = talloc_strdup(mem_ctx, name);
 515                 W_ERROR_HAVE_NO_MEMORY(str);
 516
 517                 if (format_offered == DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX) {
 518                         /* Look backwards for the \n, and replace it with / */
 519                         s = strrchr(str, '\n');
 520                         if (!s) {
 521                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 522                                 return WERR_OK;
 523                         }
 524                         s[0] = '/';
 525                 }
 526
 527                 s = strchr(str, '/');
 528                 if (!s) {
 529                         /* there must be at least one / */
 530                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 531                         return WERR_OK;
 532                 }
 533
 534                 s[0] = '\0';
 535                 s++;
 536
 537                 domain_filter = talloc_asprintf(mem_ctx, "(&(objectClass=crossRef)(dnsRoot=%s)(systemFlags:%s:=%u))",
 538                                                 ldb_binary_encode_string(mem_ctx, str),
 539                                                 LDB_OID_COMPARATOR_AND,
 540                                                 SYSTEM_FLAG_CR_NTDS_DOMAIN);
 541                 W_ERROR_HAVE_NO_MEMORY(domain_filter);
 542
 543                 /* There may not be anything after the domain component (search for the domain itself) */
 544                 account = s;
 545                 if (account && *account) {
 546                         WERROR werr = get_format_functional_filtering_param(sam_ctx,
 547                                                                                 mem_ctx,
 548                                                                                 account,
 549                                                                                 info1,
 550                                                                                 &search_dn,
 551                                                                                 domain_filter,
 552                                                                                 &result_filter);
 553                         if (!W_ERROR_IS_OK(werr)) {
 554                                 return werr;
 555                         }
 556                         if (info1->status != DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR)
 557                                 return WERR_OK;
 558                 }
 559                 break;
 560         }
 561         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
 562                 char *p;
 563                 char *domain;
 564                 const char *account = NULL;
 565
 566                 domain = talloc_strdup(mem_ctx, name);
 567                 W_ERROR_HAVE_NO_MEMORY(domain);
 568
 569                 p = strchr(domain, '\\');
 570                 if (!p) {
 571                         /* invalid input format */
 572                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 573                         return WERR_OK;
 574                 }
 575                 p[0] = '\0';
 576
 577                 if (p[1]) {
 578                         account = &p[1];
 579                 }
 580
 581                 domain_filter = talloc_asprintf(mem_ctx,
 582                                                 "(&(objectClass=crossRef)(netbiosName=%s)(systemFlags:%s:=%u))",
 583                                                 ldb_binary_encode_string(mem_ctx, domain),
 584                                                 LDB_OID_COMPARATOR_AND,
 585                                                 SYSTEM_FLAG_CR_NTDS_DOMAIN);
 586                 W_ERROR_HAVE_NO_MEMORY(domain_filter);
 587                 if (account) {
 588                         result_filter = talloc_asprintf(mem_ctx, "(sAMAccountName=%s)",
 589                                                         ldb_binary_encode_string(mem_ctx, account));
 590                         W_ERROR_HAVE_NO_MEMORY(result_filter);
 591                 }
 592
 593                 talloc_free(domain);
 594                 break;
 595         }
 596
 597                 /* A LDAP DN as a string */
 598         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779: {
 599                 domain_filter = NULL;
 600                 name_dn = ldb_dn_new(mem_ctx, sam_ctx, name);
 601                 if (! ldb_dn_validate(name_dn)) {
 602                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 603                         return WERR_OK;
 604                 }
 605                 break;
 606         }
 607
 608                 /* A GUID as a string */
 609         case DRSUAPI_DS_NAME_FORMAT_GUID: {
 610                 struct GUID guid;
 611                 char *ldap_guid;
 612                 NTSTATUS nt_status;
 613                 domain_filter = NULL;
 614
 615                 nt_status = GUID_from_string(name, &guid);
 616                 if (!NT_STATUS_IS_OK(nt_status)) {
 617                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 618                         return WERR_OK;
 619                 }
 620
 621                 ldap_guid = ldap_encode_ndr_GUID(mem_ctx, &guid);
 622                 if (!ldap_guid) {
 623                         return WERR_NOMEM;
 624                 }
 625                 result_filter = talloc_asprintf(mem_ctx, "(objectGUID=%s)",
 626                                                 ldap_guid);
 627                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 628                 break;
 629         }
 630         case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
 631                 domain_filter = NULL;
 632
 633                 result_filter = talloc_asprintf(mem_ctx, "(|(displayName=%s)(samAccountName=%s))",
 634                                                 ldb_binary_encode_string(mem_ctx, name),
 635                                                 ldb_binary_encode_string(mem_ctx, name));
 636                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 637                 break;
 638         }
 639
 640                 /* A S-1234-5678 style string */
 641         case DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY: {
 642                 struct dom_sid *sid = dom_sid_parse_talloc(mem_ctx, name);
 643                 char *ldap_sid;
 644
 645                 domain_filter = NULL;
 646                 if (!sid) {
 647                         info1->dns_domain_name = NULL;
 648                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 649                         return WERR_OK;
 650                 }
 651                 ldap_sid = ldap_encode_ndr_dom_sid(mem_ctx,
 652                                                    sid);
 653                 if (!ldap_sid) {
 654                         return WERR_NOMEM;
 655                 }
 656                 result_filter = talloc_asprintf(mem_ctx, "(objectSid=%s)",
 657                                                 ldap_sid);
 658                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 659                 break;
 660         }
 661         case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL: {
 662                 krb5_principal principal;
 663                 char *unparsed_name;
 664
 665                 ret = smb_krb5_init_context(mem_ctx,
 666                                             (struct loadparm_context *)ldb_get_opaque(sam_ctx, "loadparm"),
 667                                             &smb_krb5_context);
 668
 669                 if (ret) {
 670                         return WERR_NOMEM;
 671                 }
 672
 673                 /* Ensure we reject compleate junk first */
 674                 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
 675                 if (ret) {
 676                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 677                         return WERR_OK;
 678                 }
 679
 680                 domain_filter = NULL;
 681
 682                 /* By getting the unparsed name here, we ensure the escaping is correct (and trust the client less) */
 683                 ret = krb5_unparse_name(smb_krb5_context->krb5_context, principal, &unparsed_name);
 684                 if (ret) {
 685                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 686                         return WERR_NOMEM;
 687                 }
 688
 689                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 690
 691                 /* The ldb_binary_encode_string() here avoid LDAP filter injection attacks */
 692                 result_filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(userPrincipalName=%s))",
 693                                                 ldb_binary_encode_string(mem_ctx, unparsed_name));
 694
 695                 free(unparsed_name);
 696                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 697                 break;
 698         }
 699         case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
 700                 krb5_principal principal;
 701                 char *unparsed_name_short;
 702                 const krb5_data *component;
 703                 char *service;
 704
 705                 ret = smb_krb5_init_context(mem_ctx,
 706                                             (struct loadparm_context *)ldb_get_opaque(sam_ctx, "loadparm"),
 707                                             &smb_krb5_context);
 708
 709                 if (ret) {
 710                         return WERR_NOMEM;
 711                 }
 712
 713                 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
 714                 if (ret == 0 &&
 715                     krb5_princ_size(smb_krb5_context->krb5_context,
 716                                                         principal) < 2) {
 717                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 718                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 719                         return WERR_OK;
 720                 } else if (ret == 0) {
 721                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 722                 }
 723                 ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
 724                                             KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
 725                 if (ret) {
 726                         return dns_domain_from_principal(mem_ctx, smb_krb5_context,
 727                                                          name, info1);
 728                 }
 729
 730                 domain_filter = NULL;
 731
 732                 ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 733                                               KRB5_PRINCIPAL_UNPARSE_NO_REALM, &unparsed_name_short);
 734                 if (ret) {
 735                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 736                         return WERR_NOMEM;
 737                 }
 738
 739                 component = krb5_princ_component(smb_krb5_context->krb5_context,
 740                                                  principal, 0);
 741                 service = (char *)component->data;
 742                 if ((krb5_princ_size(smb_krb5_context->krb5_context,
 743                                                         principal) == 2) &&
 744                         (strcasecmp(service, "host") == 0)) {
 745                         /* the 'cn' attribute is just the leading part of the name */
 746                         char *computer_name;
 747                         component = krb5_princ_component(
 748                                                 smb_krb5_context->krb5_context,
 749                                                 principal, 1);
 750                         computer_name = talloc_strndup(mem_ctx, (char *)component->data,
 751                                                         strcspn((char *)component->data, "."));
 752                         if (computer_name == NULL) {
 753                                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 754                                 free(unparsed_name_short);
 755                                 return WERR_NOMEM;
 756                         }
 757
 758                         result_filter = talloc_asprintf(mem_ctx, "(|(&(servicePrincipalName=%s)(objectClass=user))(&(cn=%s)(objectClass=computer)))",
 759                                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short),
 760                                                         ldb_binary_encode_string(mem_ctx, computer_name));
 761                 } else {
 762                         result_filter = talloc_asprintf(mem_ctx, "(&(servicePrincipalName=%s)(objectClass=user))",
 763                                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short));
 764                 }
 765                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 766                 free(unparsed_name_short);
 767                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 768
 769                 break;
 770         }
 771         default: {
 772                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 773                 return WERR_OK;
 774         }
 775         }
 776
 777         if (format_flags & DRSUAPI_DS_NAME_FLAG_SYNTACTICAL_ONLY) {
 778                 return DsCrackNameOneSyntactical(mem_ctx, format_offered, format_desired,
 779                                                  name_dn, name, info1);
 780         }
 781
 782         return DsCrackNameOneFilter(sam_ctx, mem_ctx,
 783                                     smb_krb5_context,
 784                                     format_flags, format_offered, format_desired,
 785                                     name_dn, name,
 786                                     domain_filter, result_filter,
 787                                     info1, scope, search_dn);
 788 }
 789
 790 /* Subcase of CrackNames.  It is possible to translate a LDAP-style DN
 791  * (FQDN_1779) into a canoical name without actually searching the
 792  * database */
 793
 794 static WERROR DsCrackNameOneSyntactical(TALLOC_CTX *mem_ctx,
 795                                         enum drsuapi_DsNameFormat format_offered,
 796                                         enum drsuapi_DsNameFormat format_desired,
 797                                         struct ldb_dn *name_dn, const char *name,
 798                                         struct drsuapi_DsNameInfo1 *info1)
 799 {
 800         char *cracked;
 801         if (format_offered != DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
 802                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
 803                 return WERR_OK;
 804         }
 805
 806         switch (format_desired) {
 807         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 808                 cracked = ldb_dn_canonical_string(mem_ctx, name_dn);
 809                 break;
 810         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 811                 cracked = ldb_dn_canonical_ex_string(mem_ctx, name_dn);
 812                 break;
 813         default:
 814                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
 815                 return WERR_OK;
 816         }
 817         info1->status = DRSUAPI_DS_NAME_STATUS_OK;
 818         info1->result_name      = cracked;
 819         if (!cracked) {
 820                 return WERR_NOMEM;
 821         }
 822
 823         return WERR_OK;
 824 }
 825
 826 /* Given a filter for the domain, and one for the result, perform the
 827  * ldb search. The format offered and desired flags change the
 828  * behaviours, including what attributes to return.
 829  *
 830  * The smb_krb5_context is required because we use the krb5 libs for principal parsing
 831  */
 832
 833 static WERROR DsCrackNameOneFilter(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 834                                    struct smb_krb5_context *smb_krb5_context,
 835                                    uint32_t format_flags, enum drsuapi_DsNameFormat format_offered,
 836                                    enum drsuapi_DsNameFormat format_desired,
 837                                    struct ldb_dn *name_dn, const char *name,
 838                                    const char *domain_filter, const char *result_filter,
 839                                    struct drsuapi_DsNameInfo1 *info1,
 840                                    int scope, struct ldb_dn *search_dn)
 841 {
 842         int ldb_ret;
 843         struct ldb_result *domain_res = NULL;
 844         const char * const *domain_attrs;
 845         const char * const *result_attrs;
 846         struct ldb_message **result_res = NULL;
 847         struct ldb_message *result = NULL;
 848         int i;
 849         char *p;
 850         struct ldb_dn *partitions_basedn = samdb_partitions_dn(sam_ctx, mem_ctx);
 851
 852         const char * const _domain_attrs_1779[] = { "ncName", "dnsRoot", NULL};
 853         const char * const _result_attrs_null[] = { NULL };
 854
 855         const char * const _domain_attrs_canonical[] = { "ncName", "dnsRoot", NULL};
 856         const char * const _result_attrs_canonical[] = { "canonicalName", NULL };
 857
 858         const char * const _domain_attrs_nt4[] = { "ncName", "dnsRoot", "nETBIOSName", NULL};
 859         const char * const _result_attrs_nt4[] = { "sAMAccountName", "objectSid", "objectClass", NULL};
 860
 861         const char * const _domain_attrs_guid[] = { "ncName", "dnsRoot", NULL};
 862         const char * const _result_attrs_guid[] = { "objectGUID", NULL};
 863
 864         const char * const _domain_attrs_display[] = { "ncName", "dnsRoot", NULL};
 865         const char * const _result_attrs_display[] = { "displayName", "samAccountName", NULL};
 866
 867         const char * const _domain_attrs_none[] = { "ncName", "dnsRoot" , NULL};
 868         const char * const _result_attrs_none[] = { NULL};
 869
 870         /* here we need to set the attrs lists for domain and result lookups */
 871         switch (format_desired) {
 872         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779:
 873         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 874                 domain_attrs = _domain_attrs_1779;
 875                 result_attrs = _result_attrs_null;
 876                 break;
 877         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 878                 domain_attrs = _domain_attrs_canonical;
 879                 result_attrs = _result_attrs_canonical;
 880                 break;
 881         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT:
 882                 domain_attrs = _domain_attrs_nt4;
 883                 result_attrs = _result_attrs_nt4;
 884                 break;
 885         case DRSUAPI_DS_NAME_FORMAT_GUID:
 886                 domain_attrs = _domain_attrs_guid;
 887                 result_attrs = _result_attrs_guid;
 888                 break;
 889         case DRSUAPI_DS_NAME_FORMAT_DISPLAY:
 890                 domain_attrs = _domain_attrs_display;
 891                 result_attrs = _result_attrs_display;
 892                 break;
 893         default:
 894                 domain_attrs = _domain_attrs_none;
 895                 result_attrs = _result_attrs_none;
 896                 break;
 897         }
 898
 899         if (domain_filter) {
 900                 /* if we have a domain_filter look it up and set the result_basedn and the dns_domain_name */
 901                 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
 902                                              partitions_basedn,
 903                                              LDB_SCOPE_ONELEVEL,
 904                                              domain_attrs,
 905                                              "%s", domain_filter);
 906
 907                 if (ldb_ret != LDB_SUCCESS) {
 908                         DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s\n", ldb_errstring(sam_ctx)));
 909                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 910                         return WERR_OK;
 911                 }
 912
 913                 switch (domain_res->count) {
 914                 case 1:
 915                         break;
 916                 case 0:
 917                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 918                         return WERR_OK;
 919                 default:
 920                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 921                         return WERR_OK;
 922                 }
 923
 924                 info1->dns_domain_name  = ldb_msg_find_attr_as_string(domain_res->msgs[0], "dnsRoot", NULL);
 925                 W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
 926                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 927         } else {
 928                 info1->dns_domain_name  = NULL;
 929                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 930         }
 931
 932         if (result_filter) {
 933                 int ret;
 934                 struct ldb_result *res;
 935                 uint32_t dsdb_flags = 0;
 936                 struct ldb_dn *real_search_dn = NULL;
 937                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 938
 939                 /*
 940                  * From 4.1.4.2.11 of MS-DRSR
 941                  * if DS_NAME_FLAG_GCVERIFY in flags then
 942                  * rt := select all O from all
 943                  * where attrValue in GetAttrVals(O, att, false)
 944                  * else
 945                  * rt := select all O from subtree DefaultNC()
 946                  * where attrValue in GetAttrVals(O, att, false)
 947                  * endif
 948                  * return rt
 949                  */
 950                 if (format_flags & DRSUAPI_DS_NAME_FLAG_GCVERIFY ||
 951                     format_offered == DRSUAPI_DS_NAME_FORMAT_GUID)
 952                 {
 953                         dsdb_flags = DSDB_SEARCH_SEARCH_ALL_PARTITIONS;
 954                 } else if (domain_res) {
 955                         if (!search_dn) {
 956                                 struct ldb_dn *tmp_dn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
 957                                 real_search_dn = tmp_dn;
 958                         } else {
 959                                 real_search_dn = search_dn;
 960                         }
 961                 } else {
 962                         real_search_dn = ldb_get_default_basedn(sam_ctx);
 963                 }
 964                 if (format_desired == DRSUAPI_DS_NAME_FORMAT_GUID){
 965                          dsdb_flags |= DSDB_SEARCH_SHOW_RECYCLED;
 966                 }
 967                 /* search with the 'phantom root' flag */
 968                 ret = dsdb_search(sam_ctx, mem_ctx, &res,
 969                                   real_search_dn,
 970                                   scope,
 971                                   result_attrs,
 972                                   dsdb_flags,
 973                                   "%s", result_filter);
 974                 if (ret != LDB_SUCCESS) {
 975                         DEBUG(2, ("DsCrackNameOneFilter phantom root search failed: %s\n",
 976                                   ldb_errstring(sam_ctx)));
 977                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 978                         return WERR_OK;
 979                 }
 980
 981                 ldb_ret = res->count;
 982                 result_res = res->msgs;
 983         } else if (format_offered == DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
 984                 ldb_ret = gendb_search_dn(sam_ctx, mem_ctx, name_dn, &result_res,
 985                                           result_attrs);
 986         } else if (domain_res) {
 987                 name_dn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
 988                 ldb_ret = gendb_search_dn(sam_ctx, mem_ctx, name_dn, &result_res,
 989                                           result_attrs);
 990         } else {
 991                 /* Can't happen */
 992                 DEBUG(0, ("LOGIC ERROR: DsCrackNameOneFilter domain ref search not available: This can't happen...\n"));
 993                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 994                 return WERR_OK;
 995         }
 996
 997         switch (ldb_ret) {
 998         case 1:
 999                 result = result_res[0];
1000                 break;
1001         case 0:
1002                 switch (format_offered) {
1003                 case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL:
1004                         return DsCrackNameSPNAlias(sam_ctx, mem_ctx,
1005                                                    smb_krb5_context,
1006                                                    format_flags, format_offered, format_desired,
1007                                                    name, info1);
1008
1009                 case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL:
1010                         return DsCrackNameUPN(sam_ctx, mem_ctx, smb_krb5_context,
1011                                               format_flags, format_offered, format_desired,
1012                                               name, info1);
1013                 default:
1014                         break;
1015                 }
1016                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1017                 return WERR_OK;
1018         case -1:
1019                 DEBUG(2, ("DsCrackNameOneFilter result search failed: %s\n", ldb_errstring(sam_ctx)));
1020                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1021                 return WERR_OK;
1022         default:
1023                 switch (format_offered) {
1024                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
1025                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
1026                 {
1027                         const char *canonical_name = NULL; /* Not required, but we get warnings... */
1028                         /* We may need to manually filter further */
1029                         for (i = 0; i < ldb_ret; i++) {
1030                                 switch (format_offered) {
1031                                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
1032                                         canonical_name = ldb_dn_canonical_string(mem_ctx, result_res[i]->dn);
1033                                         break;
1034                                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
1035                                         canonical_name = ldb_dn_canonical_ex_string(mem_ctx, result_res[i]->dn);
1036                                         break;
1037                                 default:
1038                                         break;
1039                                 }
1040                                 if (strcasecmp_m(canonical_name, name) == 0) {
1041                                         result = result_res[i];
1042                                         break;
1043                                 }
1044                         }
1045                         if (!result) {
1046                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1047                                 return WERR_OK;
1048                         }
1049                 }
1050                 /* FALL TROUGH */
1051                 default:
1052                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1053                         return WERR_OK;
1054                 }
1055         }
1056
1057         info1->dns_domain_name = ldb_dn_canonical_string(mem_ctx, result->dn);
1058         W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
1059         p = strchr(info1->dns_domain_name, '/');
1060         if (p) {
1061                 p[0] = '\0';
1062         }
1063
1064         /* here we can use result and domain_res[0] */
1065         switch (format_desired) {
1066         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779: {
1067                 info1->result_name      = ldb_dn_alloc_linearized(mem_ctx, result->dn);
1068                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1069
1070                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1071                 return WERR_OK;
1072         }
1073         case DRSUAPI_DS_NAME_FORMAT_CANONICAL: {
1074                 info1->result_name      = ldb_msg_find_attr_as_string(result, "canonicalName", NULL);
1075                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1076                 return WERR_OK;
1077         }
1078         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX: {
1079                 /* Not in the virtual ldb attribute */
1080                 return DsCrackNameOneSyntactical(mem_ctx,
1081                                                  DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1082                                                  DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX,
1083                                                  result->dn, name, info1);
1084         }
1085         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
1086
1087                 const struct dom_sid *sid = samdb_result_dom_sid(mem_ctx, result, "objectSid");
1088                 const char *_acc = "", *_dom = "";
1089                 if (sid == NULL) {
1090                         info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
1091                         return WERR_OK;
1092                 }
1093
1094                 if (samdb_find_attribute(sam_ctx, result, "objectClass",
1095                                          "domain")) {
1096                         /* This can also find a DomainDNSZones entry,
1097                          * but it won't have the SID we just
1098                          * checked.  */
1099                         ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
1100                                                      partitions_basedn,
1101                                                      LDB_SCOPE_ONELEVEL,
1102                                                      domain_attrs,
1103                                                      "(ncName=%s)", ldb_dn_get_linearized(result->dn));
1104
1105                         if (ldb_ret != LDB_SUCCESS) {
1106                                 DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s\n", ldb_errstring(sam_ctx)));
1107                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1108                                 return WERR_OK;
1109                         }
1110
1111                         switch (domain_res->count) {
1112                         case 1:
1113                                 break;
1114                         case 0:
1115                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1116                                 return WERR_OK;
1117                         default:
1118                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1119                                 return WERR_OK;
1120                         }
1121                         _dom = ldb_msg_find_attr_as_string(domain_res->msgs[0], "nETBIOSName", NULL);
1122                         W_ERROR_HAVE_NO_MEMORY(_dom);
1123                 } else {
1124                         _acc = ldb_msg_find_attr_as_string(result, "sAMAccountName", NULL);
1125                         if (!_acc) {
1126                                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
1127                                 return WERR_OK;
1128                         }
1129                         if (dom_sid_in_domain(dom_sid_parse_talloc(mem_ctx, SID_BUILTIN), sid)) {
1130                                 _dom = "BUILTIN";
1131                         } else {
1132                                 const char *attrs[] = { NULL };
1133                                 struct ldb_result *domain_res2;
1134                                 struct dom_sid *dom_sid = dom_sid_dup(mem_ctx, sid);
1135                                 if (!dom_sid) {
1136                                         return WERR_OK;
1137                                 }
1138                                 dom_sid->num_auths--;
1139                                 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
1140                                                              NULL,
1141                                                              LDB_SCOPE_BASE,
1142                                                              attrs,
1143                                                              "(&(objectSid=%s)(objectClass=domain))",
1144                                                              ldap_encode_ndr_dom_sid(mem_ctx, dom_sid));
1145
1146                                 if (ldb_ret != LDB_SUCCESS) {
1147                                         DEBUG(2, ("DsCrackNameOneFilter domain search failed: %s\n", ldb_errstring(sam_ctx)));
1148                                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1149                                         return WERR_OK;
1150                                 }
1151
1152                                 switch (domain_res->count) {
1153                                 case 1:
1154                                         break;
1155                                 case 0:
1156                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1157                                         return WERR_OK;
1158                                 default:
1159                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1160                                         return WERR_OK;
1161                                 }
1162
1163                                 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res2,
1164                                                              partitions_basedn,
1165                                                              LDB_SCOPE_ONELEVEL,
1166                                                              domain_attrs,
1167                                                              "(ncName=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
1168
1169                                 if (ldb_ret != LDB_SUCCESS) {
1170                                         DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s\n", ldb_errstring(sam_ctx)));
1171                                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1172                                         return WERR_OK;
1173                                 }
1174
1175                                 switch (domain_res2->count) {
1176                                 case 1:
1177                                         break;
1178                                 case 0:
1179                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1180                                         return WERR_OK;
1181                                 default:
1182                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1183                                         return WERR_OK;
1184                                 }
1185                                 _dom = ldb_msg_find_attr_as_string(domain_res2->msgs[0], "nETBIOSName", NULL);
1186                                 W_ERROR_HAVE_NO_MEMORY(_dom);
1187                         }
1188                 }
1189
1190                 info1->result_name      = talloc_asprintf(mem_ctx, "%s\\%s", _dom, _acc);
1191                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1192
1193                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1194                 return WERR_OK;
1195         }
1196         case DRSUAPI_DS_NAME_FORMAT_GUID: {
1197                 struct GUID guid;
1198
1199                 guid = samdb_result_guid(result, "objectGUID");
1200
1201                 info1->result_name      = GUID_string2(mem_ctx, &guid);
1202                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1203
1204                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1205                 return WERR_OK;
1206         }
1207         case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
1208                 info1->result_name      = ldb_msg_find_attr_as_string(result, "displayName", NULL);
1209                 if (!info1->result_name) {
1210                         info1->result_name      = ldb_msg_find_attr_as_string(result, "sAMAccountName", NULL);
1211                 }
1212                 if (!info1->result_name) {
1213                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1214                 } else {
1215                         info1->status = DRSUAPI_DS_NAME_STATUS_OK;
1216                 }
1217                 return WERR_OK;
1218         }
1219         case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
1220                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1221                 return WERR_OK;
1222         }
1223         case DRSUAPI_DS_NAME_FORMAT_DNS_DOMAIN:
1224         case DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY: {
1225                 info1->dns_domain_name = NULL;
1226                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1227                 return WERR_OK;
1228         }
1229         default:
1230                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
1231                 return WERR_OK;
1232         }
1233 }
1234
1235 /* Given a user Principal Name (such as foo@bar.com),
1236  * return the user and domain DNs.  This is used in the KDC to then
1237  * return the Keys and evaluate policy */
1238
1239 NTSTATUS crack_user_principal_name(struct ldb_context *sam_ctx,
1240                                    TALLOC_CTX *mem_ctx,
1241                                    const char *user_principal_name,
1242                                    struct ldb_dn **user_dn,
1243                                    struct ldb_dn **domain_dn)
1244 {
1245         WERROR werr;
1246         struct drsuapi_DsNameInfo1 info1;
1247         werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1248                                   DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL,
1249                                   DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1250                                   user_principal_name,
1251                                   &info1);
1252         if (!W_ERROR_IS_OK(werr)) {
1253                 return werror_to_ntstatus(werr);
1254         }
1255         switch (info1.status) {
1256         case DRSUAPI_DS_NAME_STATUS_OK:
1257                 break;
1258         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1259         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1260         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1261                 return NT_STATUS_NO_SUCH_USER;
1262         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1263         default:
1264                 return NT_STATUS_UNSUCCESSFUL;
1265         }
1266
1267         *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1268
1269         if (domain_dn) {
1270                 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1271                                           DRSUAPI_DS_NAME_FORMAT_CANONICAL,
1272                                           DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1273                                           talloc_asprintf(mem_ctx, "%s/",
1274                                                           info1.dns_domain_name),
1275                                           &info1);
1276                 if (!W_ERROR_IS_OK(werr)) {
1277                         return werror_to_ntstatus(werr);
1278                 }
1279                 switch (info1.status) {
1280                 case DRSUAPI_DS_NAME_STATUS_OK:
1281                         break;
1282                 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1283                 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1284                 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1285                         return NT_STATUS_NO_SUCH_USER;
1286                 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1287                 default:
1288                         return NT_STATUS_UNSUCCESSFUL;
1289                 }
1290
1291                 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1292         }
1293
1294         return NT_STATUS_OK;
1295 }
1296
1297 /* Given a Service Principal Name (such as host/foo.bar.com@BAR.COM),
1298  * return the user and domain DNs.  This is used in the KDC to then
1299  * return the Keys and evaluate policy */
1300
1301 NTSTATUS crack_service_principal_name(struct ldb_context *sam_ctx,
1302                                       TALLOC_CTX *mem_ctx,
1303                                       const char *service_principal_name,
1304                                       struct ldb_dn **user_dn,
1305                                       struct ldb_dn **domain_dn)
1306 {
1307         WERROR werr;
1308         struct drsuapi_DsNameInfo1 info1;
1309         werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1310                                   DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL,
1311                                   DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1312                                   service_principal_name,
1313                                   &info1);
1314         if (!W_ERROR_IS_OK(werr)) {
1315                 return werror_to_ntstatus(werr);
1316         }
1317         switch (info1.status) {
1318         case DRSUAPI_DS_NAME_STATUS_OK:
1319                 break;
1320         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1321         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1322         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1323                 return NT_STATUS_NO_SUCH_USER;
1324         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1325         default:
1326                 return NT_STATUS_UNSUCCESSFUL;
1327         }
1328
1329         *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1330
1331         if (domain_dn) {
1332                 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1333                                           DRSUAPI_DS_NAME_FORMAT_CANONICAL,
1334                                           DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1335                                           talloc_asprintf(mem_ctx, "%s/",
1336                                                           info1.dns_domain_name),
1337                                           &info1);
1338                 if (!W_ERROR_IS_OK(werr)) {
1339                         return werror_to_ntstatus(werr);
1340                 }
1341                 switch (info1.status) {
1342                 case DRSUAPI_DS_NAME_STATUS_OK:
1343                         break;
1344                 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1345                 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1346                 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1347                         return NT_STATUS_NO_SUCH_USER;
1348                 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1349                 default:
1350                         return NT_STATUS_UNSUCCESSFUL;
1351                 }
1352
1353                 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1354         }
1355
1356         return NT_STATUS_OK;
1357 }
1358
1359 NTSTATUS crack_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1360                                 struct tevent_context *ev_ctx,
1361                                 struct loadparm_context *lp_ctx,
1362                                 enum drsuapi_DsNameFormat format_offered,
1363                                 const char *name,
1364                                 const char **nt4_domain, const char **nt4_account)
1365 {
1366         WERROR werr;
1367         struct drsuapi_DsNameInfo1 info1;
1368         struct ldb_context *ldb;
1369         char *p;
1370
1371         /* Handle anonymous bind */
1372         if (!name || !*name) {
1373                 *nt4_domain = "";
1374                 *nt4_account = "";
1375                 return NT_STATUS_OK;
1376         }
1377
1378         ldb = samdb_connect(mem_ctx, ev_ctx, lp_ctx, system_session(lp_ctx), 0);
1379         if (ldb == NULL) {
1380                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
1381         }
1382
1383         werr = DsCrackNameOneName(ldb, mem_ctx, 0,
1384                                   format_offered,
1385                                   DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT,
1386                                   name,
1387                                   &info1);
1388         if (!W_ERROR_IS_OK(werr)) {
1389                 return werror_to_ntstatus(werr);
1390         }
1391         switch (info1.status) {
1392         case DRSUAPI_DS_NAME_STATUS_OK:
1393                 break;
1394         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1395         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1396         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1397                 return NT_STATUS_NO_SUCH_USER;
1398         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1399         default:
1400                 return NT_STATUS_UNSUCCESSFUL;
1401         }
1402
1403         *nt4_domain = talloc_strdup(mem_ctx, info1.result_name);
1404         if (*nt4_domain == NULL) {
1405                 return NT_STATUS_NO_MEMORY;
1406         }
1407
1408         p = strchr(*nt4_domain, '\\');
1409         if (!p) {
1410                 return NT_STATUS_INVALID_PARAMETER;
1411         }
1412         p[0] = '\0';
1413
1414         *nt4_account = talloc_strdup(mem_ctx, &p[1]);
1415         if (*nt4_account == NULL) {
1416                 return NT_STATUS_NO_MEMORY;
1417         }
1418
1419         return NT_STATUS_OK;
1420 }
1421
1422 NTSTATUS crack_auto_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1423                                      struct tevent_context *ev_ctx,
1424                                      struct loadparm_context *lp_ctx,
1425                                      const char *name,
1426                                      const char **nt4_domain,
1427                                      const char **nt4_account)
1428 {
1429         enum drsuapi_DsNameFormat format_offered = DRSUAPI_DS_NAME_FORMAT_UNKNOWN;
1430
1431         /* Handle anonymous bind */
1432         if (!name || !*name) {
1433                 *nt4_domain = "";
1434                 *nt4_account = "";
1435                 return NT_STATUS_OK;
1436         }
1437
1438         if (strchr_m(name, '=')) {
1439                 format_offered = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
1440         } else if (strchr_m(name, '@')) {
1441                 format_offered = DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL;
1442         } else if (strchr_m(name, '\\')) {
1443                 format_offered = DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT;
1444         } else if (strchr_m(name, '/')) {
1445                 format_offered = DRSUAPI_DS_NAME_FORMAT_CANONICAL;
1446         } else {
1447                 return NT_STATUS_NO_SUCH_USER;
1448         }
1449
1450         return crack_name_to_nt4_name(mem_ctx, ev_ctx, lp_ctx, format_offered, name, nt4_domain, nt4_account);
1451 }
1452
1453
1454 WERROR dcesrv_drsuapi_ListRoles(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
1455                                 const struct drsuapi_DsNameRequest1 *req1,
1456                                 struct drsuapi_DsNameCtr1 **ctr1)
1457 {
1458         struct drsuapi_DsNameInfo1 *names;
1459         uint32_t i;
1460         uint32_t count = 5;/*number of fsmo role owners we are going to return*/
1461
1462         *ctr1 = talloc(mem_ctx, struct drsuapi_DsNameCtr1);
1463         W_ERROR_HAVE_NO_MEMORY(*ctr1);
1464         names = talloc_array(mem_ctx, struct drsuapi_DsNameInfo1, count);
1465         W_ERROR_HAVE_NO_MEMORY(names);
1466
1467         for (i = 0; i < count; i++) {
1468                 WERROR werr;
1469                 struct ldb_dn *role_owner_dn, *fsmo_role_dn, *server_dn;
1470                 werr = dsdb_get_fsmo_role_info(mem_ctx, sam_ctx, i,
1471                                                &fsmo_role_dn, &role_owner_dn);
1472                 if(!W_ERROR_IS_OK(werr)) {
1473                         return werr;
1474                 }
1475                 server_dn = ldb_dn_copy(mem_ctx, role_owner_dn);
1476                 ldb_dn_remove_child_components(server_dn, 1);
1477                 names[i].status = DRSUAPI_DS_NAME_STATUS_OK;
1478                 names[i].dns_domain_name = samdb_dn_to_dnshostname(sam_ctx, mem_ctx,
1479                                                                    server_dn);
1480                 if(!names[i].dns_domain_name) {
1481                         DEBUG(4, ("list_roles: Failed to find dNSHostName for server %s\n",
1482                                   ldb_dn_get_linearized(server_dn)));
1483                 }
1484                 names[i].result_name = talloc_strdup(mem_ctx, ldb_dn_get_linearized(role_owner_dn));
1485         }
1486
1487         (*ctr1)->count = count;
1488         (*ctr1)->array = names;
1489
1490         return WERR_OK;
1491 }
1492
1493 WERROR dcesrv_drsuapi_CrackNamesByNameFormat(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
1494                                              const struct drsuapi_DsNameRequest1 *req1,
1495                                              struct drsuapi_DsNameCtr1 **ctr1)
1496 {
1497         struct drsuapi_DsNameInfo1 *names;
1498         uint32_t i, count;
1499         WERROR status;
1500
1501         *ctr1 = talloc_zero(mem_ctx, struct drsuapi_DsNameCtr1);
1502         W_ERROR_HAVE_NO_MEMORY(*ctr1);
1503
1504         count = req1->count;
1505         names = talloc_array(mem_ctx, struct drsuapi_DsNameInfo1, count);
1506         W_ERROR_HAVE_NO_MEMORY(names);
1507
1508         for (i=0; i < count; i++) {
1509                 status = DsCrackNameOneName(sam_ctx, mem_ctx,
1510                                             req1->format_flags,
1511                                             req1->format_offered,
1512                                             req1->format_desired,
1513                                             req1->names[i].str,
1514                                             &names[i]);
1515                 if (!W_ERROR_IS_OK(status)) {
1516                         return status;
1517                 }
1518         }
1519
1520         (*ctr1)->count = count;
1521         (*ctr1)->array = names;
1522
1523         return WERR_OK;
1524 }
1525
1526 WERROR dcesrv_drsuapi_ListInfoServer(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
1527                                      const struct drsuapi_DsNameRequest1 *req1,
1528                                      struct drsuapi_DsNameCtr1 **_ctr1)
1529 {
1530         struct drsuapi_DsNameInfo1 *names;
1531         struct ldb_result *res;
1532         struct ldb_dn *server_dn, *dn;
1533         struct drsuapi_DsNameCtr1 *ctr1;
1534         int ret, i;
1535         const char *str;
1536         const char *attrs[] = {
1537                 "dn",
1538                 "dNSHostName",
1539                 "serverReference",
1540                 NULL
1541         };
1542
1543         *_ctr1 = NULL;
1544
1545         ctr1 = talloc_zero(mem_ctx, struct drsuapi_DsNameCtr1);
1546         W_ERROR_HAVE_NO_MEMORY(ctr1);
1547
1548         /*
1549          * No magic value here, we have to return 3 entries according to the
1550          * MS-DRSR.pdf
1551          */
1552         ctr1->count = 3;
1553         names = talloc_zero_array(ctr1, struct drsuapi_DsNameInfo1,
1554                                   ctr1->count);
1555         W_ERROR_HAVE_NO_MEMORY(names);
1556         ctr1->array = names;
1557
1558         for (i=0; i < ctr1->count; i++) {
1559                 names[i].status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1560         }
1561         *_ctr1 = ctr1;
1562
1563         if (req1->count != 1) {
1564                 DEBUG(1, ("Expected a count of 1 for the ListInfoServer crackname \n"));
1565                 return WERR_OK;
1566         }
1567
1568         if (req1->names[0].str == NULL) {
1569                 return WERR_OK;
1570         }
1571
1572         server_dn = ldb_dn_new(mem_ctx, sam_ctx, req1->names[0].str);
1573         W_ERROR_HAVE_NO_MEMORY(server_dn);
1574
1575         ret = ldb_search(sam_ctx, mem_ctx, &res, server_dn, LDB_SCOPE_ONELEVEL,
1576                          NULL, "(objectClass=nTDSDSA)");
1577
1578         if (ret != LDB_SUCCESS) {
1579                 DEBUG(1, ("Search for objectClass=nTDSDSA "
1580                           "returned less than 1 objects\n"));
1581                 return WERR_OK;
1582         }
1583
1584         if (res->count != 1) {
1585                 DEBUG(1, ("Search for objectClass=nTDSDSA "
1586                           "returned less than 1 objects\n"));
1587                 return WERR_OK;
1588         }
1589
1590         if (res->msgs[0]->dn) {
1591                 names[0].result_name = ldb_dn_alloc_linearized(names, res->msgs[0]->dn);
1592                 W_ERROR_HAVE_NO_MEMORY(names[0].result_name);
1593                 names[0].status = DRSUAPI_DS_NAME_STATUS_OK;
1594         }
1595
1596         talloc_free(res);
1597
1598         ret = ldb_search(sam_ctx, mem_ctx, &res, server_dn, LDB_SCOPE_BASE,
1599                          attrs, "(objectClass=*)");
1600         if (ret != LDB_SUCCESS) {
1601                 DEBUG(1, ("Search for objectClass=* on dn %s"
1602                           "returned %s\n", req1->names[0].str,
1603                           ldb_strerror(ret)));
1604                 return WERR_OK;
1605         }
1606
1607         if (res->count != 1) {
1608                 DEBUG(1, ("Search for objectClass=* on dn %s"
1609                           "returned less than 1 objects\n", req1->names[0].str));
1610                 return WERR_OK;
1611         }
1612
1613         str = ldb_msg_find_attr_as_string(res->msgs[0], "dNSHostName", NULL);
1614         if (str != NULL) {
1615                 names[1].result_name = talloc_strdup(names, str);
1616                 W_ERROR_HAVE_NO_MEMORY(names[1].result_name);
1617                 names[1].status = DRSUAPI_DS_NAME_STATUS_OK;
1618         }
1619
1620         dn = ldb_msg_find_attr_as_dn(sam_ctx, mem_ctx, res->msgs[0], "serverReference");
1621         if (dn != NULL) {
1622                 names[2].result_name = ldb_dn_alloc_linearized(names, dn);
1623                 W_ERROR_HAVE_NO_MEMORY(names[2].result_name);
1624                 names[2].status = DRSUAPI_DS_NAME_STATUS_OK;
1625         }
1626
1627         talloc_free(dn);
1628         talloc_free(res);
1629
1630         return WERR_OK;
1631 }