source4/dsdb/samdb/cracknames.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    endpoint server for the drsuapi pipe
   5    DsCrackNames()
   6
   7    Copyright (C) Stefan Metzmacher 2004
   8    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 #include "includes.h"
  25 #include "librpc/gen_ndr/drsuapi.h"
  26 #include "rpc_server/common/common.h"
  27 #include "lib/ldb/include/ldb_errors.h"
  28 #include "system/kerberos.h"
  29 #include "auth/kerberos/kerberos.h"
  30 #include "libcli/ldap/ldap.h"
  31 #include "libcli/security/security.h"
  32 #include "librpc/gen_ndr/ndr_misc.h"
  33 #include "auth/auth.h"
  34 #include "util/util_ldb.h"
  35 #include "dsdb/samdb/samdb.h"
  36
  37 static WERROR DsCrackNameOneFilter(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
  38                                    struct smb_krb5_context *smb_krb5_context,
  39                                    uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
  40                                    struct ldb_dn *name_dn, const char *name,
  41                                    const char *domain_filter, const char *result_filter,
  42                                    struct drsuapi_DsNameInfo1 *info1);
  43 static WERROR DsCrackNameOneSyntactical(TALLOC_CTX *mem_ctx,
  44                                         uint32_t format_offered, uint32_t format_desired,
  45                                         struct ldb_dn *name_dn, const char *name,
  46                                         struct drsuapi_DsNameInfo1 *info1);
  47
  48 static WERROR dns_domain_from_principal(TALLOC_CTX *mem_ctx, struct smb_krb5_context *smb_krb5_context,
  49                                         const char *name,
  50                                         struct drsuapi_DsNameInfo1 *info1)
  51 {
  52         krb5_error_code ret;
  53         krb5_principal principal;
  54         /* perhaps it's a principal with a realm, so return the right 'domain only' response */
  55         char **realm;
  56         ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
  57                                     KRB5_PRINCIPAL_PARSE_MUST_REALM, &principal);
  58         if (ret) {
  59                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
  60                 return WERR_OK;
  61         }
  62
  63         /* This isn't an allocation assignemnt, so it is free'ed with the krb5_free_principal */
  64         realm = krb5_princ_realm(smb_krb5_context->krb5_context, principal);
  65
  66         info1->dns_domain_name  = talloc_strdup(mem_ctx, *realm);
  67         krb5_free_principal(smb_krb5_context->krb5_context, principal);
  68
  69         W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
  70
  71         info1->status = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
  72         return WERR_OK;
  73 }
  74
  75 static enum drsuapi_DsNameStatus LDB_lookup_spn_alias(krb5_context context, struct ldb_context *ldb_ctx,
  76                                                       TALLOC_CTX *mem_ctx,
  77                                                       const char *alias_from,
  78                                                       char **alias_to)
  79 {
  80         int i;
  81         int ret;
  82         struct ldb_result *res;
  83         struct ldb_message_element *spnmappings;
  84         TALLOC_CTX *tmp_ctx;
  85         struct ldb_dn *service_dn;
  86         char *service_dn_str;
  87
  88         const char *directory_attrs[] = {
  89                 "sPNMappings",
  90                 NULL
  91         };
  92
  93         tmp_ctx = talloc_new(mem_ctx);
  94         if (!tmp_ctx) {
  95                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
  96         }
  97
  98         service_dn = ldb_dn_new(tmp_ctx, ldb_ctx, "CN=Directory Service,CN=Windows NT,CN=Services");
  99         if ( ! ldb_dn_add_base(service_dn, samdb_config_dn(ldb_ctx))) {
 100                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 101         }
 102         service_dn_str = ldb_dn_alloc_linearized(tmp_ctx, service_dn);
 103         if ( ! service_dn_str) {
 104                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 105         }
 106
 107         ret = ldb_search(ldb_ctx, service_dn, LDB_SCOPE_BASE, "(objectClass=nTDSService)",
 108                          directory_attrs, &res);
 109
 110         if (ret != LDB_SUCCESS && ret != LDB_ERR_NO_SUCH_OBJECT) {
 111                 DEBUG(1, ("ldb_search: dn: %s not found: %s", service_dn_str, ldb_errstring(ldb_ctx)));
 112                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 113         } else if (ret == LDB_ERR_NO_SUCH_OBJECT || res->count != 1) {
 114                 talloc_free(res);
 115                 DEBUG(1, ("ldb_search: dn: %s not found", service_dn_str));
 116                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 117         }
 118         talloc_steal(tmp_ctx, res);
 119
 120         spnmappings = ldb_msg_find_element(res->msgs[0], "sPNMappings");
 121         if (!spnmappings || spnmappings->num_values == 0) {
 122                 DEBUG(1, ("ldb_search: dn: %s no sPNMappings attribute", service_dn_str));
 123                 talloc_free(tmp_ctx);
 124                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 125         }
 126
 127         for (i = 0; i < spnmappings->num_values; i++) {
 128                 char *mapping, *p, *str;
 129                 mapping = talloc_strdup(tmp_ctx,
 130                                         (const char *)spnmappings->values[i].data);
 131                 if (!mapping) {
 132                         DEBUG(1, ("LDB_lookup_spn_alias: ldb_search: dn: %s did not have an sPNMapping\n", service_dn_str));
 133                         talloc_free(tmp_ctx);
 134                         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 135                 }
 136
 137                 /* C string manipulation sucks */
 138
 139                 p = strchr(mapping, '=');
 140                 if (!p) {
 141                         DEBUG(1, ("ldb_search: dn: %s sPNMapping malformed: %s\n",
 142                                   service_dn_str, mapping));
 143                         talloc_free(tmp_ctx);
 144                         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 145                 }
 146                 p[0] = '\0';
 147                 p++;
 148                 do {
 149                         str = p;
 150                         p = strchr(p, ',');
 151                         if (p) {
 152                                 p[0] = '\0';
 153                                 p++;
 154                         }
 155                         if (strcasecmp(str, alias_from) == 0) {
 156                                 *alias_to = mapping;
 157                                 talloc_steal(mem_ctx, mapping);
 158                                 talloc_free(tmp_ctx);
 159                                 return DRSUAPI_DS_NAME_STATUS_OK;
 160                         }
 161                 } while (p);
 162         }
 163         DEBUG(4, ("LDB_lookup_spn_alias: no alias for service %s applicable\n", alias_from));
 164         talloc_free(tmp_ctx);
 165         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 166 }
 167
 168 /* When cracking a ServicePrincipalName, many services may be served
 169  * by the host/ servicePrincipalName.  The incoming query is for cifs/
 170  * but we translate it here, and search on host/.  This is done after
 171  * the cifs/ entry has been searched for, making this a fallback */
 172
 173 static WERROR DsCrackNameSPNAlias(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 174                                   struct smb_krb5_context *smb_krb5_context,
 175                                   uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
 176                                   const char *name, struct drsuapi_DsNameInfo1 *info1)
 177 {
 178         WERROR wret;
 179         krb5_error_code ret;
 180         krb5_principal principal;
 181         const char *service, *dns_name;
 182         char *new_service;
 183         char *new_princ;
 184         enum drsuapi_DsNameStatus namestatus;
 185
 186         /* parse principal */
 187         ret = krb5_parse_name_flags(smb_krb5_context->krb5_context,
 188                                     name, KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
 189         if (ret) {
 190                 DEBUG(2, ("Could not parse principal: %s: %s",
 191                           name, smb_get_krb5_error_message(smb_krb5_context->krb5_context,
 192                                                            ret, mem_ctx)));
 193                 return WERR_NOMEM;
 194         }
 195
 196         /* grab cifs/, http/ etc */
 197
 198         /* This is checked for in callers, but be safe */
 199         if (principal->name.name_string.len < 2) {
 200                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 201                 return WERR_OK;
 202         }
 203         service = principal->name.name_string.val[0];
 204         dns_name = principal->name.name_string.val[1];
 205
 206         /* MAP it */
 207         namestatus = LDB_lookup_spn_alias(smb_krb5_context->krb5_context,
 208                                           sam_ctx, mem_ctx,
 209                                           service, &new_service);
 210
 211         if (namestatus == DRSUAPI_DS_NAME_STATUS_NOT_FOUND) {
 212                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 213                 info1->dns_domain_name  = talloc_strdup(mem_ctx, dns_name);
 214                 if (!info1->dns_domain_name) {
 215                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 216                         return WERR_NOMEM;
 217                 }
 218                 return WERR_OK;
 219         } else if (namestatus != DRSUAPI_DS_NAME_STATUS_OK) {
 220                 info1->status = namestatus;
 221                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 222                 return WERR_OK;
 223         }
 224
 225         /* ooh, very nasty playing around in the Principal... */
 226         free(principal->name.name_string.val[0]);
 227         principal->name.name_string.val[0] = strdup(new_service);
 228         if (!principal->name.name_string.val[0]) {
 229                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 230                 return WERR_NOMEM;
 231         }
 232
 233         /* reform principal */
 234         ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 235                                       KRB5_PRINCIPAL_UNPARSE_NO_REALM, &new_princ);
 236
 237         if (ret) {
 238                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 239                 return WERR_NOMEM;
 240         }
 241
 242         wret = DsCrackNameOneName(sam_ctx, mem_ctx, format_flags, format_offered, format_desired,
 243                                   new_princ, info1);
 244         free(new_princ);
 245         if (W_ERROR_IS_OK(wret) && (info1->status == DRSUAPI_DS_NAME_STATUS_NOT_FOUND)) {
 246                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 247                 info1->dns_domain_name  = talloc_strdup(mem_ctx, dns_name);
 248                 if (!info1->dns_domain_name) {
 249                         wret = WERR_NOMEM;
 250                 }
 251         }
 252         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 253         return wret;
 254 }
 255
 256 /* Subcase of CrackNames, for the userPrincipalName */
 257
 258 static WERROR DsCrackNameUPN(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 259                              struct smb_krb5_context *smb_krb5_context,
 260                              uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
 261                              const char *name, struct drsuapi_DsNameInfo1 *info1)
 262 {
 263         int ldb_ret;
 264         WERROR status;
 265         const char *domain_filter = NULL;
 266         const char *result_filter = NULL;
 267         krb5_error_code ret;
 268         krb5_principal principal;
 269         char **realm;
 270         char *unparsed_name_short;
 271         const char *domain_attrs[] = { NULL };
 272         struct ldb_result *domain_res = NULL;
 273
 274         /* Prevent recursion */
 275         if (!name) {
 276                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 277                 return WERR_OK;
 278         }
 279
 280         ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
 281                                     KRB5_PRINCIPAL_PARSE_MUST_REALM, &principal);
 282         if (ret) {
 283                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 284                 return WERR_OK;
 285         }
 286
 287         realm = krb5_princ_realm(smb_krb5_context->krb5_context, principal);
 288
 289         ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res,
 290                                      samdb_partitions_dn(sam_ctx, mem_ctx),
 291                                      LDB_SCOPE_ONELEVEL,
 292                                      domain_attrs,
 293                                      "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))",
 294                                      ldb_binary_encode_string(mem_ctx, *realm),
 295                                      ldb_binary_encode_string(mem_ctx, *realm));
 296
 297         if (ldb_ret != LDB_SUCCESS) {
 298                 DEBUG(2, ("DsCrackNameUPN domain ref search failed: %s", ldb_errstring(sam_ctx)));
 299                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 300                 return WERR_OK;
 301         }
 302
 303         switch (domain_res->count) {
 304         case 1:
 305                 break;
 306         case 0:
 307                 return dns_domain_from_principal(mem_ctx, smb_krb5_context,
 308                                                  name, info1);
 309         default:
 310                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 311                 return WERR_OK;
 312         }
 313
 314         ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 315                                       KRB5_PRINCIPAL_UNPARSE_NO_REALM, &unparsed_name_short);
 316         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 317
 318         if (ret) {
 319                 free(unparsed_name_short);
 320                 return WERR_NOMEM;
 321         }
 322
 323         /* This may need to be extended for more userPrincipalName variations */
 324         result_filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
 325                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short));
 326
 327         domain_filter = talloc_asprintf(mem_ctx, "(dn=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
 328
 329         if (!result_filter || !domain_filter) {
 330                 free(unparsed_name_short);
 331                 return WERR_NOMEM;
 332         }
 333         status = DsCrackNameOneFilter(sam_ctx, mem_ctx,
 334                                       smb_krb5_context,
 335                                       format_flags, format_offered, format_desired,
 336                                       NULL, unparsed_name_short, domain_filter, result_filter,
 337                                       info1);
 338         free(unparsed_name_short);
 339
 340         return status;
 341 }
 342
 343 /* Crack a single 'name', from format_offered into format_desired, returning the result in info1 */
 344
 345 WERROR DsCrackNameOneName(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 346                           uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
 347                           const char *name, struct drsuapi_DsNameInfo1 *info1)
 348 {
 349         krb5_error_code ret;
 350         const char *domain_filter = NULL;
 351         const char *result_filter = NULL;
 352         struct ldb_dn *name_dn = NULL;
 353
 354         struct smb_krb5_context *smb_krb5_context;
 355         ret = smb_krb5_init_context(mem_ctx,
 356                                     (struct event_context *)ldb_get_opaque(sam_ctx, "EventContext"),
 357                                     &smb_krb5_context);
 358
 359         if (ret) {
 360                 return WERR_NOMEM;
 361         }
 362
 363         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 364         info1->dns_domain_name = NULL;
 365         info1->result_name = NULL;
 366
 367         if (!name) {
 368                 return WERR_INVALID_PARAM;
 369         }
 370
 371         /* TODO: - fill the correct names in all cases!
 372          *       - handle format_flags
 373          */
 374
 375         /* here we need to set the domain_filter and/or the result_filter */
 376         switch (format_offered) {
 377         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 378         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 379         {
 380                 char *str, *s, *account;
 381
 382                 if (strlen(name) == 0) {
 383                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 384                         return WERR_OK;
 385                 }
 386
 387                 str = talloc_strdup(mem_ctx, name);
 388                 W_ERROR_HAVE_NO_MEMORY(str);
 389
 390                 if (format_offered == DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX) {
 391                         /* Look backwards for the \n, and replace it with / */
 392                         s = strrchr(str, '\n');
 393                         if (!s) {
 394                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 395                                 return WERR_OK;
 396                         }
 397                         s[0] = '/';
 398                 }
 399
 400                 s = strchr(str, '/');
 401                 if (!s) {
 402                         /* there must be at least one / */
 403                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 404                         return WERR_OK;
 405                 }
 406
 407                 s[0] = '\0';
 408                 s++;
 409
 410                 domain_filter = talloc_asprintf(mem_ctx, "(&(objectClass=crossRef)(ncName=%s))",
 411                                                 ldb_dn_get_linearized(samdb_dns_domain_to_dn(sam_ctx, mem_ctx, str)));
 412                 W_ERROR_HAVE_NO_MEMORY(domain_filter);
 413
 414                 /* There may not be anything after the domain component (search for the domain itself) */
 415                 if (s[0]) {
 416
 417                         account = strrchr(s, '/');
 418                         if (!account) {
 419                                 account = s;
 420                         } else {
 421                                 account++;
 422                         }
 423                         account = ldb_binary_encode_string(mem_ctx, account);
 424                         W_ERROR_HAVE_NO_MEMORY(account);
 425                         result_filter = talloc_asprintf(mem_ctx, "(name=%s)",
 426                                                         account);
 427                         W_ERROR_HAVE_NO_MEMORY(result_filter);
 428                 }
 429                 break;
 430         }
 431         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
 432                 char *p;
 433                 char *domain;
 434                 const char *account = NULL;
 435
 436                 domain = talloc_strdup(mem_ctx, name);
 437                 W_ERROR_HAVE_NO_MEMORY(domain);
 438
 439                 p = strchr(domain, '\\');
 440                 if (!p) {
 441                         /* invalid input format */
 442                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 443                         return WERR_OK;
 444                 }
 445                 p[0] = '\0';
 446
 447                 if (p[1]) {
 448                         account = &p[1];
 449                 }
 450
 451                 domain_filter = talloc_asprintf(mem_ctx,
 452                                                 "(&(&(nETBIOSName=%s)(objectclass=crossRef))(ncName=*))",
 453                                                 ldb_binary_encode_string(mem_ctx, domain));
 454                 W_ERROR_HAVE_NO_MEMORY(domain_filter);
 455                 if (account) {
 456                         result_filter = talloc_asprintf(mem_ctx, "(sAMAccountName=%s)",
 457                                                         ldb_binary_encode_string(mem_ctx, account));
 458                         W_ERROR_HAVE_NO_MEMORY(result_filter);
 459                 }
 460
 461                 talloc_free(domain);
 462                 break;
 463         }
 464
 465                 /* A LDAP DN as a string */
 466         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779: {
 467                 domain_filter = NULL;
 468                 name_dn = ldb_dn_new(mem_ctx, sam_ctx, name);
 469                 if (! ldb_dn_validate(name_dn)) {
 470                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 471                         return WERR_OK;
 472                 }
 473                 break;
 474         }
 475
 476                 /* A GUID as a string */
 477         case DRSUAPI_DS_NAME_FORMAT_GUID: {
 478                 struct GUID guid;
 479                 char *ldap_guid;
 480                 NTSTATUS nt_status;
 481                 domain_filter = NULL;
 482
 483                 nt_status = GUID_from_string(name, &guid);
 484                 if (!NT_STATUS_IS_OK(nt_status)) {
 485                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 486                         return WERR_OK;
 487                 }
 488
 489                 ldap_guid = ldap_encode_ndr_GUID(mem_ctx, &guid);
 490                 if (!ldap_guid) {
 491                         return WERR_NOMEM;
 492                 }
 493                 result_filter = talloc_asprintf(mem_ctx, "(objectGUID=%s)",
 494                                                 ldap_guid);
 495                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 496                 break;
 497         }
 498         case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
 499                 domain_filter = NULL;
 500
 501                 result_filter = talloc_asprintf(mem_ctx, "(|(displayName=%s)(samAccountName=%s))",
 502                                                 ldb_binary_encode_string(mem_ctx, name),
 503                                                 ldb_binary_encode_string(mem_ctx, name));
 504                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 505                 break;
 506         }
 507
 508                 /* A S-1234-5678 style string */
 509         case DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY: {
 510                 struct dom_sid *sid = dom_sid_parse_talloc(mem_ctx, name);
 511                 char *ldap_sid;
 512
 513                 domain_filter = NULL;
 514                 if (!sid) {
 515                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 516                         return WERR_OK;
 517                 }
 518                 ldap_sid = ldap_encode_ndr_dom_sid(mem_ctx,
 519                                                    sid);
 520                 if (!ldap_sid) {
 521                         return WERR_NOMEM;
 522                 }
 523                 result_filter = talloc_asprintf(mem_ctx, "(objectSid=%s)",
 524                                                 ldap_sid);
 525                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 526                 break;
 527         }
 528         case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL: {
 529                 krb5_principal principal;
 530                 char *unparsed_name;
 531                 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
 532                 if (ret) {
 533                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 534                         return WERR_OK;
 535                 }
 536
 537                 domain_filter = NULL;
 538
 539                 ret = krb5_unparse_name(smb_krb5_context->krb5_context, principal, &unparsed_name);
 540                 if (ret) {
 541                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 542                         return WERR_NOMEM;
 543                 }
 544
 545                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 546                 result_filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(userPrincipalName=%s))",
 547                                                 ldb_binary_encode_string(mem_ctx, unparsed_name));
 548
 549                 free(unparsed_name);
 550                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 551                 break;
 552         }
 553         case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
 554                 krb5_principal principal;
 555                 char *unparsed_name_short;
 556                 char *service;
 557                 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
 558                 if (ret == 0 && principal->name.name_string.len < 2) {
 559                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 560                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 561                         return WERR_OK;
 562                 }
 563                 ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
 564                                             KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
 565                 if (ret) {
 566                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 567
 568                         return dns_domain_from_principal(mem_ctx, smb_krb5_context,
 569                                                          name, info1);
 570                 }
 571
 572                 domain_filter = NULL;
 573
 574                 ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 575                                               KRB5_PRINCIPAL_UNPARSE_NO_REALM, &unparsed_name_short);
 576                 if (ret) {
 577                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 578                         return WERR_NOMEM;
 579                 }
 580
 581                 service = principal->name.name_string.val[0];
 582                 if ((principal->name.name_string.len == 2) && (strcasecmp(service, "host") == 0)) {
 583                         /* the 'cn' attribute is just the leading part of the name */
 584                         char *computer_name;
 585                         computer_name = talloc_strndup(mem_ctx, principal->name.name_string.val[1],
 586                                                       strcspn(principal->name.name_string.val[1], "."));
 587                         if (computer_name == NULL) {
 588                                 return WERR_NOMEM;
 589                         }
 590
 591                         result_filter = talloc_asprintf(mem_ctx, "(|(&(servicePrincipalName=%s)(objectClass=user))(&(cn=%s)(objectClass=computer)))",
 592                                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short),
 593                                                         ldb_binary_encode_string(mem_ctx, computer_name));
 594                 } else {
 595                         result_filter = talloc_asprintf(mem_ctx, "(&(servicePrincipalName=%s)(objectClass=user))",
 596                                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short));
 597                 }
 598                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 599                 free(unparsed_name_short);
 600                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 601
 602                 break;
 603         }
 604         default: {
 605                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 606                 return WERR_OK;
 607         }
 608
 609         }
 610
 611         if (format_flags & DRSUAPI_DS_NAME_FLAG_SYNTACTICAL_ONLY) {
 612                 return DsCrackNameOneSyntactical(mem_ctx, format_offered, format_desired,
 613                                                  name_dn, name, info1);
 614         }
 615
 616         return DsCrackNameOneFilter(sam_ctx, mem_ctx,
 617                                     smb_krb5_context,
 618                                     format_flags, format_offered, format_desired,
 619                                     name_dn, name,
 620                                     domain_filter, result_filter,
 621                                     info1);
 622 }
 623
 624 /* Subcase of CrackNames.  It is possible to translate a LDAP-style DN
 625  * (FQDN_1779) into a canoical name without actually searching the
 626  * database */
 627
 628 static WERROR DsCrackNameOneSyntactical(TALLOC_CTX *mem_ctx,
 629                                         uint32_t format_offered, uint32_t format_desired,
 630                                         struct ldb_dn *name_dn, const char *name,
 631                                         struct drsuapi_DsNameInfo1 *info1)
 632 {
 633         char *cracked;
 634         if (format_offered != DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
 635                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
 636                 return WERR_OK;
 637         }
 638
 639         switch (format_desired) {
 640         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 641                 cracked = ldb_dn_canonical_string(mem_ctx, name_dn);
 642                 break;
 643         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 644                 cracked = ldb_dn_canonical_ex_string(mem_ctx, name_dn);
 645                 break;
 646         default:
 647                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
 648                 return WERR_OK;
 649         }
 650         info1->status = DRSUAPI_DS_NAME_STATUS_OK;
 651         info1->result_name      = cracked;
 652         if (!cracked) {
 653                 return WERR_NOMEM;
 654         }
 655
 656         return WERR_OK;
 657 }
 658
 659 /* Given a filter for the domain, and one for the result, perform the
 660  * ldb search. The format offered and desired flags change the
 661  * behaviours, including what attributes to return.
 662  *
 663  * The smb_krb5_context is required because we use the krb5 libs for principal parsing
 664  */
 665
 666 static WERROR DsCrackNameOneFilter(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 667                                    struct smb_krb5_context *smb_krb5_context,
 668                                    uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
 669                                    struct ldb_dn *name_dn, const char *name,
 670                                    const char *domain_filter, const char *result_filter,
 671                                    struct drsuapi_DsNameInfo1 *info1)
 672 {
 673         int ldb_ret;
 674         struct ldb_result *domain_res = NULL;
 675         const char * const *domain_attrs;
 676         const char * const *result_attrs;
 677         struct ldb_message **result_res = NULL;
 678         struct ldb_message *result = NULL;
 679         struct ldb_dn *result_basedn = NULL;
 680         int i;
 681         char *p;
 682         struct ldb_dn *partitions_basedn = samdb_partitions_dn(sam_ctx, mem_ctx);
 683
 684         const char * const _domain_attrs_1779[] = { "ncName", "dnsRoot", NULL};
 685         const char * const _result_attrs_null[] = { NULL };
 686
 687         const char * const _domain_attrs_canonical[] = { "ncName", "dnsRoot", NULL};
 688         const char * const _result_attrs_canonical[] = { "canonicalName", NULL };
 689
 690         const char * const _domain_attrs_nt4[] = { "ncName", "dnsRoot", "nETBIOSName", NULL};
 691         const char * const _result_attrs_nt4[] = { "sAMAccountName", "objectSid", "objectClass", NULL};
 692
 693         const char * const _domain_attrs_guid[] = { "ncName", "dnsRoot", NULL};
 694         const char * const _result_attrs_guid[] = { "objectGUID", NULL};
 695
 696         const char * const _domain_attrs_display[] = { "ncName", "dnsRoot", NULL};
 697         const char * const _result_attrs_display[] = { "displayName", "samAccountName", NULL};
 698
 699         const char * const _domain_attrs_none[] = { "ncName", "dnsRoot" , NULL};
 700         const char * const _result_attrs_none[] = { NULL};
 701
 702         /* here we need to set the attrs lists for domain and result lookups */
 703         switch (format_desired) {
 704         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779:
 705         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 706                 domain_attrs = _domain_attrs_1779;
 707                 result_attrs = _result_attrs_null;
 708                 break;
 709         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 710                 domain_attrs = _domain_attrs_canonical;
 711                 result_attrs = _result_attrs_canonical;
 712                 break;
 713         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT:
 714                 domain_attrs = _domain_attrs_nt4;
 715                 result_attrs = _result_attrs_nt4;
 716                 break;
 717         case DRSUAPI_DS_NAME_FORMAT_GUID:
 718                 domain_attrs = _domain_attrs_guid;
 719                 result_attrs = _result_attrs_guid;
 720                 break;
 721         case DRSUAPI_DS_NAME_FORMAT_DISPLAY:
 722                 domain_attrs = _domain_attrs_display;
 723                 result_attrs = _result_attrs_display;
 724                 break;
 725         default:
 726                 domain_attrs = _domain_attrs_none;
 727                 result_attrs = _result_attrs_none;
 728                 break;
 729         }
 730
 731         if (domain_filter) {
 732                 /* if we have a domain_filter look it up and set the result_basedn and the dns_domain_name */
 733                 ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res,
 734                                              partitions_basedn,
 735                                              LDB_SCOPE_ONELEVEL,
 736                                              domain_attrs,
 737                                              "%s", domain_filter);
 738
 739                 if (ldb_ret != LDB_SUCCESS) {
 740                         DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s", ldb_errstring(sam_ctx)));
 741                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 742                         return WERR_OK;
 743                 }
 744
 745                 switch (domain_res->count) {
 746                 case 1:
 747                         break;
 748                 case 0:
 749                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 750                         return WERR_OK;
 751                 default:
 752                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 753                         return WERR_OK;
 754                 }
 755
 756                 info1->dns_domain_name  = samdb_result_string(domain_res->msgs[0], "dnsRoot", NULL);
 757                 W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
 758                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 759         } else {
 760                 info1->dns_domain_name  = NULL;
 761                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 762         }
 763
 764         if (result_filter) {
 765                 int ret;
 766                 struct ldb_result *res;
 767                 if (domain_res) {
 768                         result_basedn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
 769
 770                         ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &res,
 771                                                  result_basedn, LDB_SCOPE_SUBTREE,
 772                                                  result_attrs, "%s", result_filter);
 773                         if (ret != LDB_SUCCESS) {
 774                                 talloc_free(result_res);
 775                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 776                                 return WERR_OK;
 777                         }
 778                         ldb_ret = res->count;
 779                         result_res = res->msgs;
 780                 } else {
 781                         /* search with the 'phantom root' flag */
 782                         struct ldb_request *req;
 783
 784                         res = talloc_zero(mem_ctx, struct ldb_result);
 785                         W_ERROR_HAVE_NO_MEMORY(res);
 786
 787                         ret = ldb_build_search_req(&req, sam_ctx, mem_ctx,
 788                                                    ldb_get_root_basedn(sam_ctx),
 789                                                    LDB_SCOPE_SUBTREE,
 790                                                    result_filter,
 791                                                    result_attrs,
 792                                                    NULL,
 793                                                    res,
 794                                                    ldb_search_default_callback);
 795                         if (ret == LDB_SUCCESS) {
 796                                 struct ldb_search_options_control *search_options;
 797                                 search_options = talloc(req, struct ldb_search_options_control);
 798                                 W_ERROR_HAVE_NO_MEMORY(search_options);
 799                                 search_options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
 800
 801                                 ret = ldb_request_add_control(req, LDB_CONTROL_SEARCH_OPTIONS_OID, false, search_options);
 802                         }
 803                         if (ret != LDB_SUCCESS) {
 804                                 talloc_free(res);
 805                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 806                                 return WERR_OK;
 807                         }
 808
 809                         ldb_set_timeout(sam_ctx, req, 0); /* use default timeout */
 810
 811                         ret = ldb_request(sam_ctx, req);
 812
 813                         if (ret == LDB_SUCCESS) {
 814                                 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
 815                         }
 816
 817                         talloc_free(req);
 818
 819                         if (ret != LDB_SUCCESS) {
 820                                 DEBUG(2, ("DsCrackNameOneFilter phantom root search failed: %s",
 821                                           ldb_errstring(sam_ctx)));
 822                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 823                                 return WERR_OK;
 824                         }
 825                         ldb_ret = res->count;
 826                         result_res = res->msgs;
 827                 }
 828         } else if (format_offered == DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
 829                 ldb_ret = gendb_search_dn(sam_ctx, mem_ctx, name_dn, &result_res,
 830                                           result_attrs);
 831         } else if (domain_res) {
 832                 name_dn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
 833                 ldb_ret = gendb_search_dn(sam_ctx, mem_ctx, name_dn, &result_res,
 834                                           result_attrs);
 835         } else {
 836                 /* Can't happen */
 837                 DEBUG(0, ("LOGIC ERROR: DsCrackNameOneFilter domain ref search not availible: This can't happen..."));
 838                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 839                 return WERR_OK;
 840         }
 841
 842         switch (ldb_ret) {
 843         case 1:
 844                 result = result_res[0];
 845                 break;
 846         case 0:
 847                 switch (format_offered) {
 848                 case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL:
 849                         return DsCrackNameSPNAlias(sam_ctx, mem_ctx,
 850                                                    smb_krb5_context,
 851                                                    format_flags, format_offered, format_desired,
 852                                                    name, info1);
 853
 854                 case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL:
 855                         return DsCrackNameUPN(sam_ctx, mem_ctx, smb_krb5_context,
 856                                               format_flags, format_offered, format_desired,
 857                                               name, info1);
 858                 }
 859                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 860                 return WERR_OK;
 861         case -1:
 862                 DEBUG(2, ("DsCrackNameOneFilter result search failed: %s", ldb_errstring(sam_ctx)));
 863                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 864                 return WERR_OK;
 865         default:
 866                 switch (format_offered) {
 867                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 868                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 869                 {
 870                         const char *canonical_name = NULL; /* Not required, but we get warnings... */
 871                         /* We may need to manually filter further */
 872                         for (i = 0; i < ldb_ret; i++) {
 873                                 switch (format_offered) {
 874                                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 875                                         canonical_name = ldb_dn_canonical_string(mem_ctx, result_res[i]->dn);
 876                                         break;
 877                                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 878                                         canonical_name = ldb_dn_canonical_ex_string(mem_ctx, result_res[i]->dn);
 879                                         break;
 880                                 }
 881                                 if (strcasecmp_m(canonical_name, name) == 0) {
 882                                         result = result_res[i];
 883                                         break;
 884                                 }
 885                         }
 886                         if (!result) {
 887                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 888                                 return WERR_OK;
 889                         }
 890                 }
 891                 default:
 892                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 893                         return WERR_OK;
 894                 }
 895         }
 896
 897         info1->dns_domain_name = ldb_dn_canonical_string(mem_ctx, result->dn);
 898         W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
 899         p = strchr(info1->dns_domain_name, '/');
 900         if (p) {
 901                 p[0] = '\0';
 902         }
 903
 904         /* here we can use result and domain_res[0] */
 905         switch (format_desired) {
 906         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779: {
 907                 info1->result_name      = ldb_dn_alloc_linearized(mem_ctx, result->dn);
 908                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
 909
 910                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
 911                 return WERR_OK;
 912         }
 913         case DRSUAPI_DS_NAME_FORMAT_CANONICAL: {
 914                 info1->result_name      = samdb_result_string(result, "canonicalName", NULL);
 915                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
 916                 return WERR_OK;
 917         }
 918         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX: {
 919                 /* Not in the virtual ldb attribute */
 920                 return DsCrackNameOneSyntactical(mem_ctx,
 921                                                  DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
 922                                                  DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX,
 923                                                  result->dn, name, info1);
 924         }
 925         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
 926
 927                 const struct dom_sid *sid = samdb_result_dom_sid(mem_ctx, result, "objectSid");
 928                 const char *_acc = "", *_dom = "";
 929
 930                 if (samdb_find_attribute(sam_ctx, result, "objectClass", "domain")) {
 931
 932                         ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res,
 933                                                      partitions_basedn,
 934                                                      LDB_SCOPE_ONELEVEL,
 935                                                      domain_attrs,
 936                                                      "(ncName=%s)", ldb_dn_get_linearized(result->dn));
 937
 938                         if (ldb_ret != LDB_SUCCESS) {
 939                                 DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s", ldb_errstring(sam_ctx)));
 940                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 941                                 return WERR_OK;
 942                         }
 943
 944                         switch (domain_res->count) {
 945                         case 1:
 946                                 break;
 947                         case 0:
 948                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 949                                 return WERR_OK;
 950                         default:
 951                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 952                                 return WERR_OK;
 953                         }
 954                         _dom = samdb_result_string(domain_res->msgs[0], "nETBIOSName", NULL);
 955                         W_ERROR_HAVE_NO_MEMORY(_dom);
 956                 } else {
 957                         _acc = samdb_result_string(result, "sAMAccountName", NULL);
 958                         if (!_acc) {
 959                                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
 960                                 return WERR_OK;
 961                         }
 962                         if (dom_sid_in_domain(dom_sid_parse_talloc(mem_ctx, SID_BUILTIN), sid)) {
 963                                 _dom = "BUILTIN";
 964                         } else {
 965                                 const char *attrs[] = { NULL };
 966                                 struct ldb_result *domain_res2;
 967                                 struct dom_sid *dom_sid = dom_sid_dup(mem_ctx, sid);
 968                                 if (!dom_sid) {
 969                                         return WERR_OK;
 970                                 }
 971                                 dom_sid->num_auths--;
 972                                 ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res,
 973                                                              NULL,
 974                                                              LDB_SCOPE_BASE,
 975                                                              attrs,
 976                                                              "(&(objectSid=%s)(objectClass=domain))",
 977                                                              ldap_encode_ndr_dom_sid(mem_ctx, dom_sid));
 978
 979                                 if (ldb_ret != LDB_SUCCESS) {
 980                                         DEBUG(2, ("DsCrackNameOneFilter domain search failed: %s", ldb_errstring(sam_ctx)));
 981                                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 982                                         return WERR_OK;
 983                                 }
 984
 985                                 switch (domain_res->count) {
 986                                 case 1:
 987                                         break;
 988                                 case 0:
 989                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 990                                         return WERR_OK;
 991                                 default:
 992                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 993                                         return WERR_OK;
 994                                 }
 995
 996                                 ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res2,
 997                                                              partitions_basedn,
 998                                                              LDB_SCOPE_ONELEVEL,
 999                                                              domain_attrs,
1000                                                              "(ncName=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
1001
1002                                 if (ldb_ret != LDB_SUCCESS) {
1003                                         DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s", ldb_errstring(sam_ctx)));
1004                                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1005                                         return WERR_OK;
1006                                 }
1007
1008                                 switch (domain_res2->count) {
1009                                 case 1:
1010                                         break;
1011                                 case 0:
1012                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1013                                         return WERR_OK;
1014                                 default:
1015                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1016                                         return WERR_OK;
1017                                 }
1018                                 _dom = samdb_result_string(domain_res2->msgs[0], "nETBIOSName", NULL);
1019                                 W_ERROR_HAVE_NO_MEMORY(_dom);
1020                         }
1021                 }
1022
1023                 info1->result_name      = talloc_asprintf(mem_ctx, "%s\\%s", _dom, _acc);
1024                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1025
1026                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1027                 return WERR_OK;
1028         }
1029         case DRSUAPI_DS_NAME_FORMAT_GUID: {
1030                 struct GUID guid;
1031
1032                 guid = samdb_result_guid(result, "objectGUID");
1033
1034                 info1->result_name      = GUID_string2(mem_ctx, &guid);
1035                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1036
1037                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1038                 return WERR_OK;
1039         }
1040         case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
1041                 info1->result_name      = samdb_result_string(result, "displayName", NULL);
1042                 if (!info1->result_name) {
1043                         info1->result_name      = samdb_result_string(result, "sAMAccountName", NULL);
1044                 }
1045                 if (!info1->result_name) {
1046                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1047                 } else {
1048                         info1->status = DRSUAPI_DS_NAME_STATUS_OK;
1049                 }
1050                 return WERR_OK;
1051         }
1052         case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
1053                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1054                 return WERR_OK;
1055         }
1056         case DRSUAPI_DS_NAME_FORMAT_DNS_DOMAIN:
1057         case DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY: {
1058                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1059                 return WERR_OK;
1060         }
1061         default:
1062                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
1063                 return WERR_OK;
1064         }
1065 }
1066
1067 /* Given a user Principal Name (such as foo@bar.com),
1068  * return the user and domain DNs.  This is used in the KDC to then
1069  * return the Keys and evaluate policy */
1070
1071 NTSTATUS crack_user_principal_name(struct ldb_context *sam_ctx,
1072                                    TALLOC_CTX *mem_ctx,
1073                                    const char *user_principal_name,
1074                                    struct ldb_dn **user_dn,
1075                                    struct ldb_dn **domain_dn)
1076 {
1077         WERROR werr;
1078         struct drsuapi_DsNameInfo1 info1;
1079         werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1080                                   DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL,
1081                                   DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1082                                   user_principal_name,
1083                                   &info1);
1084         if (!W_ERROR_IS_OK(werr)) {
1085                 return werror_to_ntstatus(werr);
1086         }
1087         switch (info1.status) {
1088         case DRSUAPI_DS_NAME_STATUS_OK:
1089                 break;
1090         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1091         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1092         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1093                 return NT_STATUS_NO_SUCH_USER;
1094         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1095         default:
1096                 return NT_STATUS_UNSUCCESSFUL;
1097         }
1098
1099         *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1100
1101         if (domain_dn) {
1102                 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1103                                           DRSUAPI_DS_NAME_FORMAT_CANONICAL,
1104                                           DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1105                                           talloc_asprintf(mem_ctx, "%s/",
1106                                                           info1.dns_domain_name),
1107                                           &info1);
1108                 if (!W_ERROR_IS_OK(werr)) {
1109                         return werror_to_ntstatus(werr);
1110                 }
1111                 switch (info1.status) {
1112                 case DRSUAPI_DS_NAME_STATUS_OK:
1113                         break;
1114                 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1115                 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1116                 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1117                         return NT_STATUS_NO_SUCH_USER;
1118                 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1119                 default:
1120                         return NT_STATUS_UNSUCCESSFUL;
1121                 }
1122
1123                 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1124         }
1125
1126         return NT_STATUS_OK;
1127
1128 }
1129
1130 /* Given a Service Principal Name (such as host/foo.bar.com@BAR.COM),
1131  * return the user and domain DNs.  This is used in the KDC to then
1132  * return the Keys and evaluate policy */
1133
1134 NTSTATUS crack_service_principal_name(struct ldb_context *sam_ctx,
1135                                       TALLOC_CTX *mem_ctx,
1136                                       const char *service_principal_name,
1137                                       struct ldb_dn **user_dn,
1138                                       struct ldb_dn **domain_dn)
1139 {
1140         WERROR werr;
1141         struct drsuapi_DsNameInfo1 info1;
1142         werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1143                                   DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL,
1144                                   DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1145                                   service_principal_name,
1146                                   &info1);
1147         if (!W_ERROR_IS_OK(werr)) {
1148                 return werror_to_ntstatus(werr);
1149         }
1150         switch (info1.status) {
1151         case DRSUAPI_DS_NAME_STATUS_OK:
1152                 break;
1153         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1154         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1155         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1156                 return NT_STATUS_NO_SUCH_USER;
1157         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1158         default:
1159                 return NT_STATUS_UNSUCCESSFUL;
1160         }
1161
1162         *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1163
1164         if (domain_dn) {
1165                 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1166                                           DRSUAPI_DS_NAME_FORMAT_CANONICAL,
1167                                           DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1168                                           talloc_asprintf(mem_ctx, "%s/",
1169                                                           info1.dns_domain_name),
1170                                           &info1);
1171                 if (!W_ERROR_IS_OK(werr)) {
1172                         return werror_to_ntstatus(werr);
1173                 }
1174                 switch (info1.status) {
1175                 case DRSUAPI_DS_NAME_STATUS_OK:
1176                         break;
1177                 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1178                 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1179                 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1180                         return NT_STATUS_NO_SUCH_USER;
1181                 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1182                 default:
1183                         return NT_STATUS_UNSUCCESSFUL;
1184                 }
1185
1186                 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1187         }
1188
1189         return NT_STATUS_OK;
1190
1191 }
1192
1193 NTSTATUS crack_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1194                                 uint32_t format_offered,
1195                                 const char *name,
1196                                 const char **nt4_domain, const char **nt4_account)
1197 {
1198         WERROR werr;
1199         struct drsuapi_DsNameInfo1 info1;
1200         struct ldb_context *ldb;
1201         char *p;
1202
1203         /* Handle anonymous bind */
1204         if (!name || !*name) {
1205                 *nt4_domain = "";
1206                 *nt4_account = "";
1207                 return NT_STATUS_OK;
1208         }
1209
1210         ldb = samdb_connect(mem_ctx, system_session(mem_ctx));
1211         if (ldb == NULL) {
1212                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
1213         }
1214
1215         werr = DsCrackNameOneName(ldb, mem_ctx, 0,
1216                                   format_offered,
1217                                   DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT,
1218                                   name,
1219                                   &info1);
1220         if (!W_ERROR_IS_OK(werr)) {
1221                 return werror_to_ntstatus(werr);
1222         }
1223         switch (info1.status) {
1224         case DRSUAPI_DS_NAME_STATUS_OK:
1225                 break;
1226         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1227         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1228         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1229                 return NT_STATUS_NO_SUCH_USER;
1230         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1231         default:
1232                 return NT_STATUS_UNSUCCESSFUL;
1233         }
1234
1235         *nt4_domain = talloc_strdup(mem_ctx, info1.result_name);
1236
1237         p = strchr(*nt4_domain, '\\');
1238         if (!p) {
1239                 return NT_STATUS_INVALID_PARAMETER;
1240         }
1241         p[0] = '\0';
1242
1243         if (p[1]) {
1244                 *nt4_account = talloc_strdup(mem_ctx, &p[1]);
1245         }
1246
1247         if (!*nt4_account || !*nt4_domain) {
1248                 return NT_STATUS_NO_MEMORY;
1249         }
1250
1251         return NT_STATUS_OK;
1252 }
1253
1254 NTSTATUS crack_auto_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1255                                      const char *name,
1256                                      const char **nt4_domain,
1257                                      const char **nt4_account)
1258 {
1259         uint32_t format_offered = DRSUAPI_DS_NAME_FORMAT_UKNOWN;
1260
1261         /* Handle anonymous bind */
1262         if (!name || !*name) {
1263                 *nt4_domain = "";
1264                 *nt4_account = "";
1265                 return NT_STATUS_OK;
1266         }
1267
1268         if (strchr_m(name, '=')) {
1269                 format_offered = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
1270         } else if (strchr_m(name, '@')) {
1271                 format_offered = DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL;
1272         } else if (strchr_m(name, '\\')) {
1273                 format_offered = DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT;
1274         } else if (strchr_m(name, '/')) {
1275                 format_offered = DRSUAPI_DS_NAME_FORMAT_CANONICAL;
1276         }
1277
1278         return crack_name_to_nt4_name(mem_ctx, format_offered, name, nt4_domain, nt4_account);
1279 }