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) {
 114                 DEBUG(1, ("ldb_search: dn: %s not found", service_dn_str));
 115                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 116         } else if (res->count != 1) {
 117                 talloc_free(res);
 118                 DEBUG(1, ("ldb_search: dn: %s not found", service_dn_str));
 119                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 120         }
 121         talloc_steal(tmp_ctx, res);
 122
 123         spnmappings = ldb_msg_find_element(res->msgs[0], "sPNMappings");
 124         if (!spnmappings || spnmappings->num_values == 0) {
 125                 DEBUG(1, ("ldb_search: dn: %s no sPNMappings attribute", service_dn_str));
 126                 talloc_free(tmp_ctx);
 127                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 128         }
 129
 130         for (i = 0; i < spnmappings->num_values; i++) {
 131                 char *mapping, *p, *str;
 132                 mapping = talloc_strdup(tmp_ctx,
 133                                         (const char *)spnmappings->values[i].data);
 134                 if (!mapping) {
 135                         DEBUG(1, ("LDB_lookup_spn_alias: ldb_search: dn: %s did not have an sPNMapping\n", service_dn_str));
 136                         talloc_free(tmp_ctx);
 137                         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 138                 }
 139
 140                 /* C string manipulation sucks */
 141
 142                 p = strchr(mapping, '=');
 143                 if (!p) {
 144                         DEBUG(1, ("ldb_search: dn: %s sPNMapping malformed: %s\n",
 145                                   service_dn_str, mapping));
 146                         talloc_free(tmp_ctx);
 147                         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 148                 }
 149                 p[0] = '\0';
 150                 p++;
 151                 do {
 152                         str = p;
 153                         p = strchr(p, ',');
 154                         if (p) {
 155                                 p[0] = '\0';
 156                                 p++;
 157                         }
 158                         if (strcasecmp(str, alias_from) == 0) {
 159                                 *alias_to = mapping;
 160                                 talloc_steal(mem_ctx, mapping);
 161                                 talloc_free(tmp_ctx);
 162                                 return DRSUAPI_DS_NAME_STATUS_OK;
 163                         }
 164                 } while (p);
 165         }
 166         DEBUG(4, ("LDB_lookup_spn_alias: no alias for service %s applicable\n", alias_from));
 167         talloc_free(tmp_ctx);
 168         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 169 }
 170
 171 /* When cracking a ServicePrincipalName, many services may be served
 172  * by the host/ servicePrincipalName.  The incoming query is for cifs/
 173  * but we translate it here, and search on host/.  This is done after
 174  * the cifs/ entry has been searched for, making this a fallback */
 175
 176 static WERROR DsCrackNameSPNAlias(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 177                                   struct smb_krb5_context *smb_krb5_context,
 178                                   uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
 179                                   const char *name, struct drsuapi_DsNameInfo1 *info1)
 180 {
 181         WERROR wret;
 182         krb5_error_code ret;
 183         krb5_principal principal;
 184         const char *service, *dns_name;
 185         char *new_service;
 186         char *new_princ;
 187         enum drsuapi_DsNameStatus namestatus;
 188
 189         /* parse principal */
 190         ret = krb5_parse_name_flags(smb_krb5_context->krb5_context,
 191                                     name, KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
 192         if (ret) {
 193                 DEBUG(2, ("Could not parse principal: %s: %s",
 194                           name, smb_get_krb5_error_message(smb_krb5_context->krb5_context,
 195                                                            ret, mem_ctx)));
 196                 return WERR_NOMEM;
 197         }
 198
 199         /* grab cifs/, http/ etc */
 200
 201         /* This is checked for in callers, but be safe */
 202         if (principal->name.name_string.len < 2) {
 203                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 204                 return WERR_OK;
 205         }
 206         service = principal->name.name_string.val[0];
 207         dns_name = principal->name.name_string.val[1];
 208
 209         /* MAP it */
 210         namestatus = LDB_lookup_spn_alias(smb_krb5_context->krb5_context,
 211                                           sam_ctx, mem_ctx,
 212                                           service, &new_service);
 213
 214         if (namestatus == DRSUAPI_DS_NAME_STATUS_NOT_FOUND) {
 215                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 216                 info1->dns_domain_name  = talloc_strdup(mem_ctx, dns_name);
 217                 if (!info1->dns_domain_name) {
 218                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 219                         return WERR_NOMEM;
 220                 }
 221                 return WERR_OK;
 222         } else if (namestatus != DRSUAPI_DS_NAME_STATUS_OK) {
 223                 info1->status = namestatus;
 224                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 225                 return WERR_OK;
 226         }
 227
 228         /* ooh, very nasty playing around in the Principal... */
 229         free(principal->name.name_string.val[0]);
 230         principal->name.name_string.val[0] = strdup(new_service);
 231         if (!principal->name.name_string.val[0]) {
 232                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 233                 return WERR_NOMEM;
 234         }
 235
 236         /* reform principal */
 237         ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 238                                       KRB5_PRINCIPAL_UNPARSE_NO_REALM, &new_princ);
 239
 240         if (ret) {
 241                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 242                 return WERR_NOMEM;
 243         }
 244
 245         wret = DsCrackNameOneName(sam_ctx, mem_ctx, format_flags, format_offered, format_desired,
 246                                   new_princ, info1);
 247         free(new_princ);
 248         if (W_ERROR_IS_OK(wret) && (info1->status == DRSUAPI_DS_NAME_STATUS_NOT_FOUND)) {
 249                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 250                 info1->dns_domain_name  = talloc_strdup(mem_ctx, dns_name);
 251                 if (!info1->dns_domain_name) {
 252                         wret = WERR_NOMEM;
 253                 }
 254         }
 255         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 256         return wret;
 257 }
 258
 259 /* Subcase of CrackNames, for the userPrincipalName */
 260
 261 static WERROR DsCrackNameUPN(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 262                              struct smb_krb5_context *smb_krb5_context,
 263                              uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
 264                              const char *name, struct drsuapi_DsNameInfo1 *info1)
 265 {
 266         int ldb_ret;
 267         WERROR status;
 268         const char *domain_filter = NULL;
 269         const char *result_filter = NULL;
 270         krb5_error_code ret;
 271         krb5_principal principal;
 272         char **realm;
 273         char *unparsed_name_short;
 274         const char *domain_attrs[] = { NULL };
 275         struct ldb_result *domain_res = NULL;
 276
 277         /* Prevent recursion */
 278         if (!name) {
 279                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 280                 return WERR_OK;
 281         }
 282
 283         ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
 284                                     KRB5_PRINCIPAL_PARSE_MUST_REALM, &principal);
 285         if (ret) {
 286                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 287                 return WERR_OK;
 288         }
 289
 290         realm = krb5_princ_realm(smb_krb5_context->krb5_context, principal);
 291
 292         ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res,
 293                                      samdb_partitions_dn(sam_ctx, mem_ctx),
 294                                      LDB_SCOPE_ONELEVEL,
 295                                      domain_attrs,
 296                                      "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))",
 297                                      ldb_binary_encode_string(mem_ctx, *realm),
 298                                      ldb_binary_encode_string(mem_ctx, *realm));
 299
 300         if (ldb_ret != LDB_SUCCESS) {
 301                 DEBUG(2, ("DsCrackNameUPN domain ref search failed: %s", ldb_errstring(sam_ctx)));
 302                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 303                 return WERR_OK;
 304         }
 305
 306         switch (domain_res->count) {
 307         case 1:
 308                 break;
 309         case 0:
 310                 return dns_domain_from_principal(mem_ctx, smb_krb5_context,
 311                                                  name, info1);
 312         default:
 313                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 314                 return WERR_OK;
 315         }
 316
 317         ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 318                                       KRB5_PRINCIPAL_UNPARSE_NO_REALM, &unparsed_name_short);
 319         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 320
 321         if (ret) {
 322                 free(unparsed_name_short);
 323                 return WERR_NOMEM;
 324         }
 325
 326         /* This may need to be extended for more userPrincipalName variations */
 327         result_filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
 328                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short));
 329
 330         domain_filter = talloc_asprintf(mem_ctx, "(dn=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
 331
 332         if (!result_filter || !domain_filter) {
 333                 free(unparsed_name_short);
 334                 return WERR_NOMEM;
 335         }
 336         status = DsCrackNameOneFilter(sam_ctx, mem_ctx,
 337                                       smb_krb5_context,
 338                                       format_flags, format_offered, format_desired,
 339                                       NULL, unparsed_name_short, domain_filter, result_filter,
 340                                       info1);
 341         free(unparsed_name_short);
 342
 343         return status;
 344 }
 345
 346 /* Crack a single 'name', from format_offered into format_desired, returning the result in info1 */
 347
 348 WERROR DsCrackNameOneName(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 349                           uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
 350                           const char *name, struct drsuapi_DsNameInfo1 *info1)
 351 {
 352         krb5_error_code ret;
 353         const char *domain_filter = NULL;
 354         const char *result_filter = NULL;
 355         struct ldb_dn *name_dn = NULL;
 356
 357         struct smb_krb5_context *smb_krb5_context;
 358         ret = smb_krb5_init_context(mem_ctx,
 359                                     (struct event_context *)ldb_get_opaque(sam_ctx, "EventContext"),
 360                                     &smb_krb5_context);
 361
 362         if (ret) {
 363                 return WERR_NOMEM;
 364         }
 365
 366         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 367         info1->dns_domain_name = NULL;
 368         info1->result_name = NULL;
 369
 370         if (!name) {
 371                 return WERR_INVALID_PARAM;
 372         }
 373
 374         /* TODO: - fill the correct names in all cases!
 375          *       - handle format_flags
 376          */
 377
 378         /* here we need to set the domain_filter and/or the result_filter */
 379         switch (format_offered) {
 380         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 381         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 382         {
 383                 char *str, *s, *account;
 384
 385                 if (strlen(name) == 0) {
 386                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 387                         return WERR_OK;
 388                 }
 389
 390                 str = talloc_strdup(mem_ctx, name);
 391                 W_ERROR_HAVE_NO_MEMORY(str);
 392
 393                 if (format_offered == DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX) {
 394                         /* Look backwards for the \n, and replace it with / */
 395                         s = strrchr(str, '\n');
 396                         if (!s) {
 397                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 398                                 return WERR_OK;
 399                         }
 400                         s[0] = '/';
 401                 }
 402
 403                 s = strchr(str, '/');
 404                 if (!s) {
 405                         /* there must be at least one / */
 406                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 407                         return WERR_OK;
 408                 }
 409
 410                 s[0] = '\0';
 411                 s++;
 412
 413                 domain_filter = talloc_asprintf(mem_ctx, "(&(objectClass=crossRef)(ncName=%s))",
 414                                                 ldb_dn_get_linearized(samdb_dns_domain_to_dn(sam_ctx, mem_ctx, str)));
 415                 W_ERROR_HAVE_NO_MEMORY(domain_filter);
 416
 417                 /* There may not be anything after the domain component (search for the domain itself) */
 418                 if (s[0]) {
 419
 420                         account = strrchr(s, '/');
 421                         if (!account) {
 422                                 account = s;
 423                         } else {
 424                                 account++;
 425                         }
 426                         account = ldb_binary_encode_string(mem_ctx, account);
 427                         W_ERROR_HAVE_NO_MEMORY(account);
 428                         result_filter = talloc_asprintf(mem_ctx, "(name=%s)",
 429                                                         account);
 430                         W_ERROR_HAVE_NO_MEMORY(result_filter);
 431                 }
 432                 break;
 433         }
 434         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
 435                 char *p;
 436                 char *domain;
 437                 const char *account = NULL;
 438
 439                 domain = talloc_strdup(mem_ctx, name);
 440                 W_ERROR_HAVE_NO_MEMORY(domain);
 441
 442                 p = strchr(domain, '\\');
 443                 if (!p) {
 444                         /* invalid input format */
 445                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 446                         return WERR_OK;
 447                 }
 448                 p[0] = '\0';
 449
 450                 if (p[1]) {
 451                         account = &p[1];
 452                 }
 453
 454                 domain_filter = talloc_asprintf(mem_ctx,
 455                                                 "(&(&(nETBIOSName=%s)(objectclass=crossRef))(ncName=*))",
 456                                                 ldb_binary_encode_string(mem_ctx, domain));
 457                 W_ERROR_HAVE_NO_MEMORY(domain_filter);
 458                 if (account) {
 459                         result_filter = talloc_asprintf(mem_ctx, "(sAMAccountName=%s)",
 460                                                         ldb_binary_encode_string(mem_ctx, account));
 461                         W_ERROR_HAVE_NO_MEMORY(result_filter);
 462                 }
 463
 464                 talloc_free(domain);
 465                 break;
 466         }
 467
 468                 /* A LDAP DN as a string */
 469         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779: {
 470                 domain_filter = NULL;
 471                 name_dn = ldb_dn_new(mem_ctx, sam_ctx, name);
 472                 if (! ldb_dn_validate(name_dn)) {
 473                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 474                         return WERR_OK;
 475                 }
 476                 break;
 477         }
 478
 479                 /* A GUID as a string */
 480         case DRSUAPI_DS_NAME_FORMAT_GUID: {
 481                 struct GUID guid;
 482                 char *ldap_guid;
 483                 NTSTATUS nt_status;
 484                 domain_filter = NULL;
 485
 486                 nt_status = GUID_from_string(name, &guid);
 487                 if (!NT_STATUS_IS_OK(nt_status)) {
 488                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 489                         return WERR_OK;
 490                 }
 491
 492                 ldap_guid = ldap_encode_ndr_GUID(mem_ctx, &guid);
 493                 if (!ldap_guid) {
 494                         return WERR_NOMEM;
 495                 }
 496                 result_filter = talloc_asprintf(mem_ctx, "(objectGUID=%s)",
 497                                                 ldap_guid);
 498                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 499                 break;
 500         }
 501         case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
 502                 domain_filter = NULL;
 503
 504                 result_filter = talloc_asprintf(mem_ctx, "(|(displayName=%s)(samAccountName=%s))",
 505                                                 ldb_binary_encode_string(mem_ctx, name),
 506                                                 ldb_binary_encode_string(mem_ctx, name));
 507                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 508                 break;
 509         }
 510
 511                 /* A S-1234-5678 style string */
 512         case DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY: {
 513                 struct dom_sid *sid = dom_sid_parse_talloc(mem_ctx, name);
 514                 char *ldap_sid;
 515
 516                 domain_filter = NULL;
 517                 if (!sid) {
 518                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 519                         return WERR_OK;
 520                 }
 521                 ldap_sid = ldap_encode_ndr_dom_sid(mem_ctx,
 522                                                    sid);
 523                 if (!ldap_sid) {
 524                         return WERR_NOMEM;
 525                 }
 526                 result_filter = talloc_asprintf(mem_ctx, "(objectSid=%s)",
 527                                                 ldap_sid);
 528                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 529                 break;
 530         }
 531         case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL: {
 532                 krb5_principal principal;
 533                 char *unparsed_name;
 534                 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
 535                 if (ret) {
 536                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 537                         return WERR_OK;
 538                 }
 539
 540                 domain_filter = NULL;
 541
 542                 ret = krb5_unparse_name(smb_krb5_context->krb5_context, principal, &unparsed_name);
 543                 if (ret) {
 544                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 545                         return WERR_NOMEM;
 546                 }
 547
 548                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 549                 result_filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(userPrincipalName=%s))",
 550                                                 ldb_binary_encode_string(mem_ctx, unparsed_name));
 551
 552                 free(unparsed_name);
 553                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 554                 break;
 555         }
 556         case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
 557                 krb5_principal principal;
 558                 char *unparsed_name_short;
 559                 char *service;
 560                 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
 561                 if (ret == 0 && principal->name.name_string.len < 2) {
 562                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 563                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 564                         return WERR_OK;
 565                 }
 566                 ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
 567                                             KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
 568                 if (ret) {
 569                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 570
 571                         return dns_domain_from_principal(mem_ctx, smb_krb5_context,
 572                                                          name, info1);
 573                 }
 574
 575                 domain_filter = NULL;
 576
 577                 ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 578                                               KRB5_PRINCIPAL_UNPARSE_NO_REALM, &unparsed_name_short);
 579                 if (ret) {
 580                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 581                         return WERR_NOMEM;
 582                 }
 583
 584                 service = principal->name.name_string.val[0];
 585                 if ((principal->name.name_string.len == 2) && (strcasecmp(service, "host") == 0)) {
 586                         /* the 'cn' attribute is just the leading part of the name */
 587                         char *computer_name;
 588                         computer_name = talloc_strndup(mem_ctx, principal->name.name_string.val[1],
 589                                                       strcspn(principal->name.name_string.val[1], "."));
 590                         if (computer_name == NULL) {
 591                                 return WERR_NOMEM;
 592                         }
 593
 594                         result_filter = talloc_asprintf(mem_ctx, "(|(&(servicePrincipalName=%s)(objectClass=user))(&(cn=%s)(objectClass=computer)))",
 595                                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short),
 596                                                         ldb_binary_encode_string(mem_ctx, computer_name));
 597                 } else {
 598                         result_filter = talloc_asprintf(mem_ctx, "(&(servicePrincipalName=%s)(objectClass=user))",
 599                                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short));
 600                 }
 601                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 602                 free(unparsed_name_short);
 603                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 604
 605                 break;
 606         }
 607         default: {
 608                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 609                 return WERR_OK;
 610         }
 611
 612         }
 613
 614         if (format_flags & DRSUAPI_DS_NAME_FLAG_SYNTACTICAL_ONLY) {
 615                 return DsCrackNameOneSyntactical(mem_ctx, format_offered, format_desired,
 616                                                  name_dn, name, info1);
 617         }
 618
 619         return DsCrackNameOneFilter(sam_ctx, mem_ctx,
 620                                     smb_krb5_context,
 621                                     format_flags, format_offered, format_desired,
 622                                     name_dn, name,
 623                                     domain_filter, result_filter,
 624                                     info1);
 625 }
 626
 627 /* Subcase of CrackNames.  It is possible to translate a LDAP-style DN
 628  * (FQDN_1779) into a canoical name without actually searching the
 629  * database */
 630
 631 static WERROR DsCrackNameOneSyntactical(TALLOC_CTX *mem_ctx,
 632                                         uint32_t format_offered, uint32_t format_desired,
 633                                         struct ldb_dn *name_dn, const char *name,
 634                                         struct drsuapi_DsNameInfo1 *info1)
 635 {
 636         char *cracked;
 637         if (format_offered != DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
 638                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
 639                 return WERR_OK;
 640         }
 641
 642         switch (format_desired) {
 643         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 644                 cracked = ldb_dn_canonical_string(mem_ctx, name_dn);
 645                 break;
 646         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 647                 cracked = ldb_dn_canonical_ex_string(mem_ctx, name_dn);
 648                 break;
 649         default:
 650                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
 651                 return WERR_OK;
 652         }
 653         info1->status = DRSUAPI_DS_NAME_STATUS_OK;
 654         info1->result_name      = cracked;
 655         if (!cracked) {
 656                 return WERR_NOMEM;
 657         }
 658
 659         return WERR_OK;
 660 }
 661
 662 /* Given a filter for the domain, and one for the result, perform the
 663  * ldb search. The format offered and desired flags change the
 664  * behaviours, including what attributes to return.
 665  *
 666  * The smb_krb5_context is required because we use the krb5 libs for principal parsing
 667  */
 668
 669 static WERROR DsCrackNameOneFilter(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 670                                    struct smb_krb5_context *smb_krb5_context,
 671                                    uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
 672                                    struct ldb_dn *name_dn, const char *name,
 673                                    const char *domain_filter, const char *result_filter,
 674                                    struct drsuapi_DsNameInfo1 *info1)
 675 {
 676         int ldb_ret;
 677         struct ldb_result *domain_res = NULL;
 678         const char * const *domain_attrs;
 679         const char * const *result_attrs;
 680         struct ldb_message **result_res = NULL;
 681         struct ldb_message *result = NULL;
 682         struct ldb_dn *result_basedn = NULL;
 683         int i;
 684         char *p;
 685         struct ldb_dn *partitions_basedn = samdb_partitions_dn(sam_ctx, mem_ctx);
 686
 687         const char * const _domain_attrs_1779[] = { "ncName", "dnsRoot", NULL};
 688         const char * const _result_attrs_null[] = { NULL };
 689
 690         const char * const _domain_attrs_canonical[] = { "ncName", "dnsRoot", NULL};
 691         const char * const _result_attrs_canonical[] = { "canonicalName", NULL };
 692
 693         const char * const _domain_attrs_nt4[] = { "ncName", "dnsRoot", "nETBIOSName", NULL};
 694         const char * const _result_attrs_nt4[] = { "sAMAccountName", "objectSid", "objectClass", NULL};
 695
 696         const char * const _domain_attrs_guid[] = { "ncName", "dnsRoot", NULL};
 697         const char * const _result_attrs_guid[] = { "objectGUID", NULL};
 698
 699         const char * const _domain_attrs_display[] = { "ncName", "dnsRoot", NULL};
 700         const char * const _result_attrs_display[] = { "displayName", "samAccountName", NULL};
 701
 702         const char * const _domain_attrs_none[] = { "ncName", "dnsRoot" , NULL};
 703         const char * const _result_attrs_none[] = { NULL};
 704
 705         /* here we need to set the attrs lists for domain and result lookups */
 706         switch (format_desired) {
 707         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779:
 708         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 709                 domain_attrs = _domain_attrs_1779;
 710                 result_attrs = _result_attrs_null;
 711                 break;
 712         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 713                 domain_attrs = _domain_attrs_canonical;
 714                 result_attrs = _result_attrs_canonical;
 715                 break;
 716         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT:
 717                 domain_attrs = _domain_attrs_nt4;
 718                 result_attrs = _result_attrs_nt4;
 719                 break;
 720         case DRSUAPI_DS_NAME_FORMAT_GUID:
 721                 domain_attrs = _domain_attrs_guid;
 722                 result_attrs = _result_attrs_guid;
 723                 break;
 724         case DRSUAPI_DS_NAME_FORMAT_DISPLAY:
 725                 domain_attrs = _domain_attrs_display;
 726                 result_attrs = _result_attrs_display;
 727                 break;
 728         default:
 729                 domain_attrs = _domain_attrs_none;
 730                 result_attrs = _result_attrs_none;
 731                 break;
 732         }
 733
 734         if (domain_filter) {
 735                 /* if we have a domain_filter look it up and set the result_basedn and the dns_domain_name */
 736                 ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res,
 737                                              partitions_basedn,
 738                                              LDB_SCOPE_ONELEVEL,
 739                                              domain_attrs,
 740                                              "%s", domain_filter);
 741
 742                 if (ldb_ret != LDB_SUCCESS) {
 743                         DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s", ldb_errstring(sam_ctx)));
 744                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 745                         return WERR_OK;
 746                 }
 747
 748                 switch (domain_res->count) {
 749                 case 1:
 750                         break;
 751                 case 0:
 752                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 753                         return WERR_OK;
 754                 default:
 755                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 756                         return WERR_OK;
 757                 }
 758
 759                 info1->dns_domain_name  = samdb_result_string(domain_res->msgs[0], "dnsRoot", NULL);
 760                 W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
 761                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 762         } else {
 763                 info1->dns_domain_name  = NULL;
 764                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 765         }
 766
 767         if (result_filter) {
 768                 int ret;
 769                 struct ldb_result *res;
 770                 if (domain_res) {
 771                         result_basedn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
 772
 773                         ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &res,
 774                                                  result_basedn, LDB_SCOPE_SUBTREE,
 775                                                  result_attrs, "%s", result_filter);
 776                         if (ret != LDB_SUCCESS) {
 777                                 talloc_free(result_res);
 778                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 779                                 return WERR_OK;
 780                         }
 781                         ldb_ret = res->count;
 782                         result_res = res->msgs;
 783                 } else {
 784                         /* search with the 'phantom root' flag */
 785                         struct ldb_request *req;
 786
 787                         res = talloc_zero(mem_ctx, struct ldb_result);
 788                         W_ERROR_HAVE_NO_MEMORY(res);
 789
 790                         ret = ldb_build_search_req(&req, sam_ctx, mem_ctx,
 791                                                    ldb_get_root_basedn(sam_ctx),
 792                                                    LDB_SCOPE_SUBTREE,
 793                                                    result_filter,
 794                                                    result_attrs,
 795                                                    NULL,
 796                                                    res,
 797                                                    ldb_search_default_callback);
 798                         if (ret == LDB_SUCCESS) {
 799                                 struct ldb_search_options_control *search_options;
 800                                 search_options = talloc(req, struct ldb_search_options_control);
 801                                 W_ERROR_HAVE_NO_MEMORY(search_options);
 802                                 search_options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
 803
 804                                 ret = ldb_request_add_control(req, LDB_CONTROL_SEARCH_OPTIONS_OID, false, search_options);
 805                         }
 806                         if (ret != LDB_SUCCESS) {
 807                                 talloc_free(res);
 808                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 809                                 return WERR_OK;
 810                         }
 811
 812                         ldb_set_timeout(sam_ctx, req, 0); /* use default timeout */
 813
 814                         ret = ldb_request(sam_ctx, req);
 815
 816                         if (ret == LDB_SUCCESS) {
 817                                 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
 818                         }
 819
 820                         talloc_free(req);
 821
 822                         if (ret != LDB_SUCCESS) {
 823                                 DEBUG(2, ("DsCrackNameOneFilter phantom root search failed: %s",
 824                                           ldb_errstring(sam_ctx)));
 825                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 826                                 return WERR_OK;
 827                         }
 828                         ldb_ret = res->count;
 829                         result_res = res->msgs;
 830                 }
 831         } else if (format_offered == DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
 832                 ldb_ret = gendb_search_dn(sam_ctx, mem_ctx, name_dn, &result_res,
 833                                           result_attrs);
 834         } else if (domain_res) {
 835                 name_dn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
 836                 ldb_ret = gendb_search_dn(sam_ctx, mem_ctx, name_dn, &result_res,
 837                                           result_attrs);
 838         } else {
 839                 /* Can't happen */
 840                 DEBUG(0, ("LOGIC ERROR: DsCrackNameOneFilter domain ref search not availible: This can't happen..."));
 841                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 842                 return WERR_OK;
 843         }
 844
 845         switch (ldb_ret) {
 846         case 1:
 847                 result = result_res[0];
 848                 break;
 849         case 0:
 850                 switch (format_offered) {
 851                 case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL:
 852                         return DsCrackNameSPNAlias(sam_ctx, mem_ctx,
 853                                                    smb_krb5_context,
 854                                                    format_flags, format_offered, format_desired,
 855                                                    name, info1);
 856
 857                 case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL:
 858                         return DsCrackNameUPN(sam_ctx, mem_ctx, smb_krb5_context,
 859                                               format_flags, format_offered, format_desired,
 860                                               name, info1);
 861                 }
 862                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 863                 return WERR_OK;
 864         case -1:
 865                 DEBUG(2, ("DsCrackNameOneFilter result search failed: %s", ldb_errstring(sam_ctx)));
 866                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 867                 return WERR_OK;
 868         default:
 869                 switch (format_offered) {
 870                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 871                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 872                 {
 873                         const char *canonical_name = NULL; /* Not required, but we get warnings... */
 874                         /* We may need to manually filter further */
 875                         for (i = 0; i < ldb_ret; i++) {
 876                                 switch (format_offered) {
 877                                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 878                                         canonical_name = ldb_dn_canonical_string(mem_ctx, result_res[i]->dn);
 879                                         break;
 880                                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 881                                         canonical_name = ldb_dn_canonical_ex_string(mem_ctx, result_res[i]->dn);
 882                                         break;
 883                                 }
 884                                 if (strcasecmp_m(canonical_name, name) == 0) {
 885                                         result = result_res[i];
 886                                         break;
 887                                 }
 888                         }
 889                         if (!result) {
 890                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 891                                 return WERR_OK;
 892                         }
 893                 }
 894                 default:
 895                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 896                         return WERR_OK;
 897                 }
 898         }
 899
 900         info1->dns_domain_name = ldb_dn_canonical_string(mem_ctx, result->dn);
 901         W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
 902         p = strchr(info1->dns_domain_name, '/');
 903         if (p) {
 904                 p[0] = '\0';
 905         }
 906
 907         /* here we can use result and domain_res[0] */
 908         switch (format_desired) {
 909         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779: {
 910                 info1->result_name      = ldb_dn_alloc_linearized(mem_ctx, result->dn);
 911                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
 912
 913                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
 914                 return WERR_OK;
 915         }
 916         case DRSUAPI_DS_NAME_FORMAT_CANONICAL: {
 917                 info1->result_name      = samdb_result_string(result, "canonicalName", NULL);
 918                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
 919                 return WERR_OK;
 920         }
 921         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX: {
 922                 /* Not in the virtual ldb attribute */
 923                 return DsCrackNameOneSyntactical(mem_ctx,
 924                                                  DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
 925                                                  DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX,
 926                                                  result->dn, name, info1);
 927         }
 928         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
 929
 930                 const struct dom_sid *sid = samdb_result_dom_sid(mem_ctx, result, "objectSid");
 931                 const char *_acc = "", *_dom = "";
 932
 933                 if (samdb_find_attribute(sam_ctx, result, "objectClass", "domain")) {
 934
 935                         ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res,
 936                                                      partitions_basedn,
 937                                                      LDB_SCOPE_ONELEVEL,
 938                                                      domain_attrs,
 939                                                      "(ncName=%s)", ldb_dn_get_linearized(result->dn));
 940
 941                         if (ldb_ret != LDB_SUCCESS) {
 942                                 DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s", ldb_errstring(sam_ctx)));
 943                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 944                                 return WERR_OK;
 945                         }
 946
 947                         switch (domain_res->count) {
 948                         case 1:
 949                                 break;
 950                         case 0:
 951                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 952                                 return WERR_OK;
 953                         default:
 954                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 955                                 return WERR_OK;
 956                         }
 957                         _dom = samdb_result_string(domain_res->msgs[0], "nETBIOSName", NULL);
 958                         W_ERROR_HAVE_NO_MEMORY(_dom);
 959                 } else {
 960                         _acc = samdb_result_string(result, "sAMAccountName", NULL);
 961                         if (!_acc) {
 962                                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
 963                                 return WERR_OK;
 964                         }
 965                         if (dom_sid_in_domain(dom_sid_parse_talloc(mem_ctx, SID_BUILTIN), sid)) {
 966                                 _dom = "BUILTIN";
 967                         } else {
 968                                 const char *attrs[] = { NULL };
 969                                 struct ldb_result *domain_res2;
 970                                 struct dom_sid *dom_sid = dom_sid_dup(mem_ctx, sid);
 971                                 if (!dom_sid) {
 972                                         return WERR_OK;
 973                                 }
 974                                 dom_sid->num_auths--;
 975                                 ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res,
 976                                                              NULL,
 977                                                              LDB_SCOPE_BASE,
 978                                                              attrs,
 979                                                              "(&(objectSid=%s)(objectClass=domain))",
 980                                                              ldap_encode_ndr_dom_sid(mem_ctx, dom_sid));
 981
 982                                 if (ldb_ret != LDB_SUCCESS) {
 983                                         DEBUG(2, ("DsCrackNameOneFilter domain search failed: %s", ldb_errstring(sam_ctx)));
 984                                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 985                                         return WERR_OK;
 986                                 }
 987
 988                                 switch (domain_res->count) {
 989                                 case 1:
 990                                         break;
 991                                 case 0:
 992                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 993                                         return WERR_OK;
 994                                 default:
 995                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 996                                         return WERR_OK;
 997                                 }
 998
 999                                 ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res2,
1000                                                              partitions_basedn,
1001                                                              LDB_SCOPE_ONELEVEL,
1002                                                              domain_attrs,
1003                                                              "(ncName=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
1004
1005                                 if (ldb_ret != LDB_SUCCESS) {
1006                                         DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s", ldb_errstring(sam_ctx)));
1007                                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1008                                         return WERR_OK;
1009                                 }
1010
1011                                 switch (domain_res2->count) {
1012                                 case 1:
1013                                         break;
1014                                 case 0:
1015                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1016                                         return WERR_OK;
1017                                 default:
1018                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1019                                         return WERR_OK;
1020                                 }
1021                                 _dom = samdb_result_string(domain_res2->msgs[0], "nETBIOSName", NULL);
1022                                 W_ERROR_HAVE_NO_MEMORY(_dom);
1023                         }
1024                 }
1025
1026                 info1->result_name      = talloc_asprintf(mem_ctx, "%s\\%s", _dom, _acc);
1027                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1028
1029                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1030                 return WERR_OK;
1031         }
1032         case DRSUAPI_DS_NAME_FORMAT_GUID: {
1033                 struct GUID guid;
1034
1035                 guid = samdb_result_guid(result, "objectGUID");
1036
1037                 info1->result_name      = GUID_string2(mem_ctx, &guid);
1038                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1039
1040                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1041                 return WERR_OK;
1042         }
1043         case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
1044                 info1->result_name      = samdb_result_string(result, "displayName", NULL);
1045                 if (!info1->result_name) {
1046                         info1->result_name      = samdb_result_string(result, "sAMAccountName", NULL);
1047                 }
1048                 if (!info1->result_name) {
1049                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1050                 } else {
1051                         info1->status = DRSUAPI_DS_NAME_STATUS_OK;
1052                 }
1053                 return WERR_OK;
1054         }
1055         case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
1056                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1057                 return WERR_OK;
1058         }
1059         case DRSUAPI_DS_NAME_FORMAT_DNS_DOMAIN:
1060         case DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY: {
1061                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1062                 return WERR_OK;
1063         }
1064         default:
1065                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
1066                 return WERR_OK;
1067         }
1068 }
1069
1070 /* Given a user Principal Name (such as foo@bar.com),
1071  * return the user and domain DNs.  This is used in the KDC to then
1072  * return the Keys and evaluate policy */
1073
1074 NTSTATUS crack_user_principal_name(struct ldb_context *sam_ctx,
1075                                    TALLOC_CTX *mem_ctx,
1076                                    const char *user_principal_name,
1077                                    struct ldb_dn **user_dn,
1078                                    struct ldb_dn **domain_dn)
1079 {
1080         WERROR werr;
1081         struct drsuapi_DsNameInfo1 info1;
1082         werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1083                                   DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL,
1084                                   DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1085                                   user_principal_name,
1086                                   &info1);
1087         if (!W_ERROR_IS_OK(werr)) {
1088                 return werror_to_ntstatus(werr);
1089         }
1090         switch (info1.status) {
1091         case DRSUAPI_DS_NAME_STATUS_OK:
1092                 break;
1093         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1094         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1095         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1096                 return NT_STATUS_NO_SUCH_USER;
1097         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1098         default:
1099                 return NT_STATUS_UNSUCCESSFUL;
1100         }
1101
1102         *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1103
1104         if (domain_dn) {
1105                 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1106                                           DRSUAPI_DS_NAME_FORMAT_CANONICAL,
1107                                           DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1108                                           talloc_asprintf(mem_ctx, "%s/",
1109                                                           info1.dns_domain_name),
1110                                           &info1);
1111                 if (!W_ERROR_IS_OK(werr)) {
1112                         return werror_to_ntstatus(werr);
1113                 }
1114                 switch (info1.status) {
1115                 case DRSUAPI_DS_NAME_STATUS_OK:
1116                         break;
1117                 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1118                 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1119                 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1120                         return NT_STATUS_NO_SUCH_USER;
1121                 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1122                 default:
1123                         return NT_STATUS_UNSUCCESSFUL;
1124                 }
1125
1126                 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1127         }
1128
1129         return NT_STATUS_OK;
1130
1131 }
1132
1133 /* Given a Service Principal Name (such as host/foo.bar.com@BAR.COM),
1134  * return the user and domain DNs.  This is used in the KDC to then
1135  * return the Keys and evaluate policy */
1136
1137 NTSTATUS crack_service_principal_name(struct ldb_context *sam_ctx,
1138                                       TALLOC_CTX *mem_ctx,
1139                                       const char *service_principal_name,
1140                                       struct ldb_dn **user_dn,
1141                                       struct ldb_dn **domain_dn)
1142 {
1143         WERROR werr;
1144         struct drsuapi_DsNameInfo1 info1;
1145         werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1146                                   DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL,
1147                                   DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1148                                   service_principal_name,
1149                                   &info1);
1150         if (!W_ERROR_IS_OK(werr)) {
1151                 return werror_to_ntstatus(werr);
1152         }
1153         switch (info1.status) {
1154         case DRSUAPI_DS_NAME_STATUS_OK:
1155                 break;
1156         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1157         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1158         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1159                 return NT_STATUS_NO_SUCH_USER;
1160         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1161         default:
1162                 return NT_STATUS_UNSUCCESSFUL;
1163         }
1164
1165         *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1166
1167         if (domain_dn) {
1168                 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1169                                           DRSUAPI_DS_NAME_FORMAT_CANONICAL,
1170                                           DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1171                                           talloc_asprintf(mem_ctx, "%s/",
1172                                                           info1.dns_domain_name),
1173                                           &info1);
1174                 if (!W_ERROR_IS_OK(werr)) {
1175                         return werror_to_ntstatus(werr);
1176                 }
1177                 switch (info1.status) {
1178                 case DRSUAPI_DS_NAME_STATUS_OK:
1179                         break;
1180                 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1181                 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1182                 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1183                         return NT_STATUS_NO_SUCH_USER;
1184                 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1185                 default:
1186                         return NT_STATUS_UNSUCCESSFUL;
1187                 }
1188
1189                 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1190         }
1191
1192         return NT_STATUS_OK;
1193
1194 }
1195
1196 NTSTATUS crack_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1197                                 uint32_t format_offered,
1198                                 const char *name,
1199                                 const char **nt4_domain, const char **nt4_account)
1200 {
1201         WERROR werr;
1202         struct drsuapi_DsNameInfo1 info1;
1203         struct ldb_context *ldb;
1204         char *p;
1205
1206         /* Handle anonymous bind */
1207         if (!name || !*name) {
1208                 *nt4_domain = "";
1209                 *nt4_account = "";
1210                 return NT_STATUS_OK;
1211         }
1212
1213         ldb = samdb_connect(mem_ctx, system_session(mem_ctx));
1214         if (ldb == NULL) {
1215                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
1216         }
1217
1218         werr = DsCrackNameOneName(ldb, mem_ctx, 0,
1219                                   format_offered,
1220                                   DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT,
1221                                   name,
1222                                   &info1);
1223         if (!W_ERROR_IS_OK(werr)) {
1224                 return werror_to_ntstatus(werr);
1225         }
1226         switch (info1.status) {
1227         case DRSUAPI_DS_NAME_STATUS_OK:
1228                 break;
1229         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1230         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1231         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1232                 return NT_STATUS_NO_SUCH_USER;
1233         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1234         default:
1235                 return NT_STATUS_UNSUCCESSFUL;
1236         }
1237
1238         *nt4_domain = talloc_strdup(mem_ctx, info1.result_name);
1239
1240         p = strchr(*nt4_domain, '\\');
1241         if (!p) {
1242                 return NT_STATUS_INVALID_PARAMETER;
1243         }
1244         p[0] = '\0';
1245
1246         if (p[1]) {
1247                 *nt4_account = talloc_strdup(mem_ctx, &p[1]);
1248         }
1249
1250         if (!*nt4_account || !*nt4_domain) {
1251                 return NT_STATUS_NO_MEMORY;
1252         }
1253
1254         return NT_STATUS_OK;
1255 }
1256
1257 NTSTATUS crack_auto_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1258                                      const char *name,
1259                                      const char **nt4_domain,
1260                                      const char **nt4_account)
1261 {
1262         uint32_t format_offered = DRSUAPI_DS_NAME_FORMAT_UKNOWN;
1263
1264         /* Handle anonymous bind */
1265         if (!name || !*name) {
1266                 *nt4_domain = "";
1267                 *nt4_account = "";
1268                 return NT_STATUS_OK;
1269         }
1270
1271         if (strchr_m(name, '=')) {
1272                 format_offered = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
1273         } else if (strchr_m(name, '@')) {
1274                 format_offered = DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL;
1275         } else if (strchr_m(name, '\\')) {
1276                 format_offered = DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT;
1277         } else if (strchr_m(name, '/')) {
1278                 format_offered = DRSUAPI_DS_NAME_FORMAT_CANONICAL;
1279         }
1280
1281         return crack_name_to_nt4_name(mem_ctx, format_offered, name, nt4_domain, nt4_account);
1282 }