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/events/events.h"
  28 #include "lib/ldb/include/ldb.h"
  29 #include "lib/ldb/include/ldb_errors.h"
  30 #include "system/kerberos.h"
  31 #include "auth/kerberos/kerberos.h"
  32 #include "libcli/ldap/ldap_ndr.h"
  33 #include "libcli/security/security.h"
  34 #include "librpc/gen_ndr/ndr_misc.h"
  35 #include "auth/auth.h"
  36 #include "util/util_ldb.h"
  37 #include "dsdb/samdb/samdb.h"
  38 #include "param/param.h"
  39
  40 static WERROR DsCrackNameOneFilter(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
  41                                    struct smb_krb5_context *smb_krb5_context,
  42                                    uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
  43                                    struct ldb_dn *name_dn, const char *name,
  44                                    const char *domain_filter, const char *result_filter,
  45                                    struct drsuapi_DsNameInfo1 *info1);
  46 static WERROR DsCrackNameOneSyntactical(TALLOC_CTX *mem_ctx,
  47                                         uint32_t format_offered, uint32_t format_desired,
  48                                         struct ldb_dn *name_dn, const char *name,
  49                                         struct drsuapi_DsNameInfo1 *info1);
  50
  51 static WERROR dns_domain_from_principal(TALLOC_CTX *mem_ctx, struct smb_krb5_context *smb_krb5_context,
  52                                         const char *name,
  53                                         struct drsuapi_DsNameInfo1 *info1)
  54 {
  55         krb5_error_code ret;
  56         krb5_principal principal;
  57         /* perhaps it's a principal with a realm, so return the right 'domain only' response */
  58         char **realm;
  59         ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
  60                                     KRB5_PRINCIPAL_PARSE_MUST_REALM, &principal);
  61         if (ret) {
  62                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
  63                 return WERR_OK;
  64         }
  65
  66         /* This isn't an allocation assignemnt, so it is free'ed with the krb5_free_principal */
  67         realm = krb5_princ_realm(smb_krb5_context->krb5_context, principal);
  68
  69         info1->dns_domain_name  = talloc_strdup(mem_ctx, *realm);
  70         krb5_free_principal(smb_krb5_context->krb5_context, principal);
  71
  72         W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
  73
  74         info1->status = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
  75         return WERR_OK;
  76 }
  77
  78 static enum drsuapi_DsNameStatus LDB_lookup_spn_alias(krb5_context context, struct ldb_context *ldb_ctx,
  79                                                       TALLOC_CTX *mem_ctx,
  80                                                       const char *alias_from,
  81                                                       char **alias_to)
  82 {
  83         int i;
  84         int ret;
  85         struct ldb_result *res;
  86         struct ldb_message_element *spnmappings;
  87         TALLOC_CTX *tmp_ctx;
  88         struct ldb_dn *service_dn;
  89         char *service_dn_str;
  90
  91         const char *directory_attrs[] = {
  92                 "sPNMappings",
  93                 NULL
  94         };
  95
  96         tmp_ctx = talloc_new(mem_ctx);
  97         if (!tmp_ctx) {
  98                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
  99         }
 100
 101         service_dn = ldb_dn_new(tmp_ctx, ldb_ctx, "CN=Directory Service,CN=Windows NT,CN=Services");
 102         if ( ! ldb_dn_add_base(service_dn, samdb_config_dn(ldb_ctx))) {
 103                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 104         }
 105         service_dn_str = ldb_dn_alloc_linearized(tmp_ctx, service_dn);
 106         if ( ! service_dn_str) {
 107                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 108         }
 109
 110         ret = ldb_search(ldb_ctx, service_dn, LDB_SCOPE_BASE, "(objectClass=nTDSService)",
 111                          directory_attrs, &res);
 112
 113         if (ret != LDB_SUCCESS && ret != LDB_ERR_NO_SUCH_OBJECT) {
 114                 DEBUG(1, ("ldb_search: dn: %s not found: %s", service_dn_str, ldb_errstring(ldb_ctx)));
 115                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 116         } else if (ret == LDB_ERR_NO_SUCH_OBJECT) {
 117                 DEBUG(1, ("ldb_search: dn: %s not found", service_dn_str));
 118                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 119         } else if (res->count != 1) {
 120                 talloc_free(res);
 121                 DEBUG(1, ("ldb_search: dn: %s not found", service_dn_str));
 122                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 123         }
 124         talloc_steal(tmp_ctx, res);
 125
 126         spnmappings = ldb_msg_find_element(res->msgs[0], "sPNMappings");
 127         if (!spnmappings || spnmappings->num_values == 0) {
 128                 DEBUG(1, ("ldb_search: dn: %s no sPNMappings attribute", service_dn_str));
 129                 talloc_free(tmp_ctx);
 130                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 131         }
 132
 133         for (i = 0; i < spnmappings->num_values; i++) {
 134                 char *mapping, *p, *str;
 135                 mapping = talloc_strdup(tmp_ctx,
 136                                         (const char *)spnmappings->values[i].data);
 137                 if (!mapping) {
 138                         DEBUG(1, ("LDB_lookup_spn_alias: ldb_search: dn: %s did not have an sPNMapping\n", service_dn_str));
 139                         talloc_free(tmp_ctx);
 140                         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 141                 }
 142
 143                 /* C string manipulation sucks */
 144
 145                 p = strchr(mapping, '=');
 146                 if (!p) {
 147                         DEBUG(1, ("ldb_search: dn: %s sPNMapping malformed: %s\n",
 148                                   service_dn_str, mapping));
 149                         talloc_free(tmp_ctx);
 150                         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 151                 }
 152                 p[0] = '\0';
 153                 p++;
 154                 do {
 155                         str = p;
 156                         p = strchr(p, ',');
 157                         if (p) {
 158                                 p[0] = '\0';
 159                                 p++;
 160                         }
 161                         if (strcasecmp(str, alias_from) == 0) {
 162                                 *alias_to = mapping;
 163                                 talloc_steal(mem_ctx, mapping);
 164                                 talloc_free(tmp_ctx);
 165                                 return DRSUAPI_DS_NAME_STATUS_OK;
 166                         }
 167                 } while (p);
 168         }
 169         DEBUG(4, ("LDB_lookup_spn_alias: no alias for service %s applicable\n", alias_from));
 170         talloc_free(tmp_ctx);
 171         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 172 }
 173
 174 /* When cracking a ServicePrincipalName, many services may be served
 175  * by the host/ servicePrincipalName.  The incoming query is for cifs/
 176  * but we translate it here, and search on host/.  This is done after
 177  * the cifs/ entry has been searched for, making this a fallback */
 178
 179 static WERROR DsCrackNameSPNAlias(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 180                                   struct smb_krb5_context *smb_krb5_context,
 181                                   uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
 182                                   const char *name, struct drsuapi_DsNameInfo1 *info1)
 183 {
 184         WERROR wret;
 185         krb5_error_code ret;
 186         krb5_principal principal;
 187         const char *service, *dns_name;
 188         char *new_service;
 189         char *new_princ;
 190         enum drsuapi_DsNameStatus namestatus;
 191
 192         /* parse principal */
 193         ret = krb5_parse_name_flags(smb_krb5_context->krb5_context,
 194                                     name, KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
 195         if (ret) {
 196                 DEBUG(2, ("Could not parse principal: %s: %s",
 197                           name, smb_get_krb5_error_message(smb_krb5_context->krb5_context,
 198                                                            ret, mem_ctx)));
 199                 return WERR_NOMEM;
 200         }
 201
 202         /* grab cifs/, http/ etc */
 203
 204         /* This is checked for in callers, but be safe */
 205         if (principal->name.name_string.len < 2) {
 206                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 207                 return WERR_OK;
 208         }
 209         service = principal->name.name_string.val[0];
 210         dns_name = principal->name.name_string.val[1];
 211
 212         /* MAP it */
 213         namestatus = LDB_lookup_spn_alias(smb_krb5_context->krb5_context,
 214                                           sam_ctx, mem_ctx,
 215                                           service, &new_service);
 216
 217         if (namestatus == DRSUAPI_DS_NAME_STATUS_NOT_FOUND) {
 218                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 219                 info1->dns_domain_name  = talloc_strdup(mem_ctx, dns_name);
 220                 if (!info1->dns_domain_name) {
 221                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 222                         return WERR_NOMEM;
 223                 }
 224                 return WERR_OK;
 225         } else if (namestatus != DRSUAPI_DS_NAME_STATUS_OK) {
 226                 info1->status = namestatus;
 227                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 228                 return WERR_OK;
 229         }
 230
 231         /* ooh, very nasty playing around in the Principal... */
 232         free(principal->name.name_string.val[0]);
 233         principal->name.name_string.val[0] = strdup(new_service);
 234         if (!principal->name.name_string.val[0]) {
 235                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 236                 return WERR_NOMEM;
 237         }
 238
 239         /* reform principal */
 240         ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 241                                       KRB5_PRINCIPAL_UNPARSE_NO_REALM, &new_princ);
 242
 243         if (ret) {
 244                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 245                 return WERR_NOMEM;
 246         }
 247
 248         wret = DsCrackNameOneName(sam_ctx, mem_ctx, format_flags, format_offered, format_desired,
 249                                   new_princ, info1);
 250         free(new_princ);
 251         if (W_ERROR_IS_OK(wret) && (info1->status == DRSUAPI_DS_NAME_STATUS_NOT_FOUND)) {
 252                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 253                 info1->dns_domain_name  = talloc_strdup(mem_ctx, dns_name);
 254                 if (!info1->dns_domain_name) {
 255                         wret = WERR_NOMEM;
 256                 }
 257         }
 258         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 259         return wret;
 260 }
 261
 262 /* Subcase of CrackNames, for the userPrincipalName */
 263
 264 static WERROR DsCrackNameUPN(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 265                              struct smb_krb5_context *smb_krb5_context,
 266                              uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
 267                              const char *name, struct drsuapi_DsNameInfo1 *info1)
 268 {
 269         int ldb_ret;
 270         WERROR status;
 271         const char *domain_filter = NULL;
 272         const char *result_filter = NULL;
 273         krb5_error_code ret;
 274         krb5_principal principal;
 275         char **realm;
 276         char *unparsed_name_short;
 277         const char *domain_attrs[] = { NULL };
 278         struct ldb_result *domain_res = NULL;
 279
 280         /* Prevent recursion */
 281         if (!name) {
 282                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 283                 return WERR_OK;
 284         }
 285
 286         ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
 287                                     KRB5_PRINCIPAL_PARSE_MUST_REALM, &principal);
 288         if (ret) {
 289                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 290                 return WERR_OK;
 291         }
 292
 293         realm = krb5_princ_realm(smb_krb5_context->krb5_context, principal);
 294
 295         ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res,
 296                                      samdb_partitions_dn(sam_ctx, mem_ctx),
 297                                      LDB_SCOPE_ONELEVEL,
 298                                      domain_attrs,
 299                                      "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))",
 300                                      ldb_binary_encode_string(mem_ctx, *realm),
 301                                      ldb_binary_encode_string(mem_ctx, *realm));
 302
 303         if (ldb_ret != LDB_SUCCESS) {
 304                 DEBUG(2, ("DsCrackNameUPN domain ref search failed: %s", ldb_errstring(sam_ctx)));
 305                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 306                 return WERR_OK;
 307         }
 308
 309         switch (domain_res->count) {
 310         case 1:
 311                 break;
 312         case 0:
 313                 return dns_domain_from_principal(mem_ctx, smb_krb5_context,
 314                                                  name, info1);
 315         default:
 316                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 317                 return WERR_OK;
 318         }
 319
 320         ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 321                                       KRB5_PRINCIPAL_UNPARSE_NO_REALM, &unparsed_name_short);
 322         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 323
 324         if (ret) {
 325                 free(unparsed_name_short);
 326                 return WERR_NOMEM;
 327         }
 328
 329         /* This may need to be extended for more userPrincipalName variations */
 330         result_filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
 331                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short));
 332
 333         domain_filter = talloc_asprintf(mem_ctx, "(distinguishedName=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
 334
 335         if (!result_filter || !domain_filter) {
 336                 free(unparsed_name_short);
 337                 return WERR_NOMEM;
 338         }
 339         status = DsCrackNameOneFilter(sam_ctx, mem_ctx,
 340                                       smb_krb5_context,
 341                                       format_flags, format_offered, format_desired,
 342                                       NULL, unparsed_name_short, domain_filter, result_filter,
 343                                       info1);
 344         free(unparsed_name_short);
 345
 346         return status;
 347 }
 348
 349 /* Crack a single 'name', from format_offered into format_desired, returning the result in info1 */
 350
 351 WERROR DsCrackNameOneName(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 352                           uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
 353                           const char *name, struct drsuapi_DsNameInfo1 *info1)
 354 {
 355         krb5_error_code ret;
 356         const char *domain_filter = NULL;
 357         const char *result_filter = NULL;
 358         struct ldb_dn *name_dn = NULL;
 359
 360         struct smb_krb5_context *smb_krb5_context;
 361         ret = smb_krb5_init_context(mem_ctx,
 362                                     ldb_get_event_context(sam_ctx),
 363                                     (struct loadparm_context *)ldb_get_opaque(sam_ctx, "loadparm"),
 364                                     &smb_krb5_context);
 365
 366         if (ret) {
 367                 return WERR_NOMEM;
 368         }
 369
 370         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 371         info1->dns_domain_name = NULL;
 372         info1->result_name = NULL;
 373
 374         if (!name) {
 375                 return WERR_INVALID_PARAM;
 376         }
 377
 378         /* TODO: - fill the correct names in all cases!
 379          *       - handle format_flags
 380          */
 381
 382         /* here we need to set the domain_filter and/or the result_filter */
 383         switch (format_offered) {
 384         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 385         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 386         {
 387                 char *str, *s, *account;
 388
 389                 if (strlen(name) == 0) {
 390                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 391                         return WERR_OK;
 392                 }
 393
 394                 str = talloc_strdup(mem_ctx, name);
 395                 W_ERROR_HAVE_NO_MEMORY(str);
 396
 397                 if (format_offered == DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX) {
 398                         /* Look backwards for the \n, and replace it with / */
 399                         s = strrchr(str, '\n');
 400                         if (!s) {
 401                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 402                                 return WERR_OK;
 403                         }
 404                         s[0] = '/';
 405                 }
 406
 407                 s = strchr(str, '/');
 408                 if (!s) {
 409                         /* there must be at least one / */
 410                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 411                         return WERR_OK;
 412                 }
 413
 414                 s[0] = '\0';
 415                 s++;
 416
 417                 domain_filter = talloc_asprintf(mem_ctx, "(&(objectClass=crossRef)(ncName=%s))",
 418                                                 ldb_dn_get_linearized(samdb_dns_domain_to_dn(sam_ctx, mem_ctx, str)));
 419                 W_ERROR_HAVE_NO_MEMORY(domain_filter);
 420
 421                 /* There may not be anything after the domain component (search for the domain itself) */
 422                 if (s[0]) {
 423
 424                         account = strrchr(s, '/');
 425                         if (!account) {
 426                                 account = s;
 427                         } else {
 428                                 account++;
 429                         }
 430                         account = ldb_binary_encode_string(mem_ctx, account);
 431                         W_ERROR_HAVE_NO_MEMORY(account);
 432                         result_filter = talloc_asprintf(mem_ctx, "(name=%s)",
 433                                                         account);
 434                         W_ERROR_HAVE_NO_MEMORY(result_filter);
 435                 }
 436                 break;
 437         }
 438         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
 439                 char *p;
 440                 char *domain;
 441                 const char *account = NULL;
 442
 443                 domain = talloc_strdup(mem_ctx, name);
 444                 W_ERROR_HAVE_NO_MEMORY(domain);
 445
 446                 p = strchr(domain, '\\');
 447                 if (!p) {
 448                         /* invalid input format */
 449                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 450                         return WERR_OK;
 451                 }
 452                 p[0] = '\0';
 453
 454                 if (p[1]) {
 455                         account = &p[1];
 456                 }
 457
 458                 domain_filter = talloc_asprintf(mem_ctx,
 459                                                 "(&(&(nETBIOSName=%s)(objectclass=crossRef))(ncName=*))",
 460                                                 ldb_binary_encode_string(mem_ctx, domain));
 461                 W_ERROR_HAVE_NO_MEMORY(domain_filter);
 462                 if (account) {
 463                         result_filter = talloc_asprintf(mem_ctx, "(sAMAccountName=%s)",
 464                                                         ldb_binary_encode_string(mem_ctx, account));
 465                         W_ERROR_HAVE_NO_MEMORY(result_filter);
 466                 }
 467
 468                 talloc_free(domain);
 469                 break;
 470         }
 471
 472                 /* A LDAP DN as a string */
 473         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779: {
 474                 domain_filter = NULL;
 475                 name_dn = ldb_dn_new(mem_ctx, sam_ctx, name);
 476                 if (! ldb_dn_validate(name_dn)) {
 477                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 478                         return WERR_OK;
 479                 }
 480                 break;
 481         }
 482
 483                 /* A GUID as a string */
 484         case DRSUAPI_DS_NAME_FORMAT_GUID: {
 485                 struct GUID guid;
 486                 char *ldap_guid;
 487                 NTSTATUS nt_status;
 488                 domain_filter = NULL;
 489
 490                 nt_status = GUID_from_string(name, &guid);
 491                 if (!NT_STATUS_IS_OK(nt_status)) {
 492                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 493                         return WERR_OK;
 494                 }
 495
 496                 ldap_guid = ldap_encode_ndr_GUID(mem_ctx, &guid);
 497                 if (!ldap_guid) {
 498                         return WERR_NOMEM;
 499                 }
 500                 result_filter = talloc_asprintf(mem_ctx, "(objectGUID=%s)",
 501                                                 ldap_guid);
 502                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 503                 break;
 504         }
 505         case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
 506                 domain_filter = NULL;
 507
 508                 result_filter = talloc_asprintf(mem_ctx, "(|(displayName=%s)(samAccountName=%s))",
 509                                                 ldb_binary_encode_string(mem_ctx, name),
 510                                                 ldb_binary_encode_string(mem_ctx, name));
 511                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 512                 break;
 513         }
 514
 515                 /* A S-1234-5678 style string */
 516         case DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY: {
 517                 struct dom_sid *sid = dom_sid_parse_talloc(mem_ctx, name);
 518                 char *ldap_sid;
 519
 520                 domain_filter = NULL;
 521                 if (!sid) {
 522                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 523                         return WERR_OK;
 524                 }
 525                 ldap_sid = ldap_encode_ndr_dom_sid(mem_ctx,
 526                                                    sid);
 527                 if (!ldap_sid) {
 528                         return WERR_NOMEM;
 529                 }
 530                 result_filter = talloc_asprintf(mem_ctx, "(objectSid=%s)",
 531                                                 ldap_sid);
 532                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 533                 break;
 534         }
 535         case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL: {
 536                 krb5_principal principal;
 537                 char *unparsed_name;
 538                 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
 539                 if (ret) {
 540                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 541                         return WERR_OK;
 542                 }
 543
 544                 domain_filter = NULL;
 545
 546                 ret = krb5_unparse_name(smb_krb5_context->krb5_context, principal, &unparsed_name);
 547                 if (ret) {
 548                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 549                         return WERR_NOMEM;
 550                 }
 551
 552                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 553                 result_filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(userPrincipalName=%s))",
 554                                                 ldb_binary_encode_string(mem_ctx, unparsed_name));
 555
 556                 free(unparsed_name);
 557                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 558                 break;
 559         }
 560         case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
 561                 krb5_principal principal;
 562                 char *unparsed_name_short;
 563                 char *service;
 564                 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
 565                 if (ret == 0 && principal->name.name_string.len < 2) {
 566                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 567                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 568                         return WERR_OK;
 569                 }
 570                 ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
 571                                             KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
 572                 if (ret) {
 573                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 574
 575                         return dns_domain_from_principal(mem_ctx, smb_krb5_context,
 576                                                          name, info1);
 577                 }
 578
 579                 domain_filter = NULL;
 580
 581                 ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 582                                               KRB5_PRINCIPAL_UNPARSE_NO_REALM, &unparsed_name_short);
 583                 if (ret) {
 584                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 585                         return WERR_NOMEM;
 586                 }
 587
 588                 service = principal->name.name_string.val[0];
 589                 if ((principal->name.name_string.len == 2) && (strcasecmp(service, "host") == 0)) {
 590                         /* the 'cn' attribute is just the leading part of the name */
 591                         char *computer_name;
 592                         computer_name = talloc_strndup(mem_ctx, principal->name.name_string.val[1],
 593                                                       strcspn(principal->name.name_string.val[1], "."));
 594                         if (computer_name == NULL) {
 595                                 return WERR_NOMEM;
 596                         }
 597
 598                         result_filter = talloc_asprintf(mem_ctx, "(|(&(servicePrincipalName=%s)(objectClass=user))(&(cn=%s)(objectClass=computer)))",
 599                                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short),
 600                                                         ldb_binary_encode_string(mem_ctx, computer_name));
 601                 } else {
 602                         result_filter = talloc_asprintf(mem_ctx, "(&(servicePrincipalName=%s)(objectClass=user))",
 603                                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short));
 604                 }
 605                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 606                 free(unparsed_name_short);
 607                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 608
 609                 break;
 610         }
 611         default: {
 612                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 613                 return WERR_OK;
 614         }
 615
 616         }
 617
 618         if (format_flags & DRSUAPI_DS_NAME_FLAG_SYNTACTICAL_ONLY) {
 619                 return DsCrackNameOneSyntactical(mem_ctx, format_offered, format_desired,
 620                                                  name_dn, name, info1);
 621         }
 622
 623         return DsCrackNameOneFilter(sam_ctx, mem_ctx,
 624                                     smb_krb5_context,
 625                                     format_flags, format_offered, format_desired,
 626                                     name_dn, name,
 627                                     domain_filter, result_filter,
 628                                     info1);
 629 }
 630
 631 /* Subcase of CrackNames.  It is possible to translate a LDAP-style DN
 632  * (FQDN_1779) into a canoical name without actually searching the
 633  * database */
 634
 635 static WERROR DsCrackNameOneSyntactical(TALLOC_CTX *mem_ctx,
 636                                         uint32_t format_offered, uint32_t format_desired,
 637                                         struct ldb_dn *name_dn, const char *name,
 638                                         struct drsuapi_DsNameInfo1 *info1)
 639 {
 640         char *cracked;
 641         if (format_offered != DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
 642                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
 643                 return WERR_OK;
 644         }
 645
 646         switch (format_desired) {
 647         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 648                 cracked = ldb_dn_canonical_string(mem_ctx, name_dn);
 649                 break;
 650         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 651                 cracked = ldb_dn_canonical_ex_string(mem_ctx, name_dn);
 652                 break;
 653         default:
 654                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
 655                 return WERR_OK;
 656         }
 657         info1->status = DRSUAPI_DS_NAME_STATUS_OK;
 658         info1->result_name      = cracked;
 659         if (!cracked) {
 660                 return WERR_NOMEM;
 661         }
 662
 663         return WERR_OK;
 664 }
 665
 666 /* Given a filter for the domain, and one for the result, perform the
 667  * ldb search. The format offered and desired flags change the
 668  * behaviours, including what attributes to return.
 669  *
 670  * The smb_krb5_context is required because we use the krb5 libs for principal parsing
 671  */
 672
 673 static WERROR DsCrackNameOneFilter(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 674                                    struct smb_krb5_context *smb_krb5_context,
 675                                    uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
 676                                    struct ldb_dn *name_dn, const char *name,
 677                                    const char *domain_filter, const char *result_filter,
 678                                    struct drsuapi_DsNameInfo1 *info1)
 679 {
 680         int ldb_ret;
 681         struct ldb_result *domain_res = NULL;
 682         const char * const *domain_attrs;
 683         const char * const *result_attrs;
 684         struct ldb_message **result_res = NULL;
 685         struct ldb_message *result = NULL;
 686         struct ldb_dn *result_basedn = NULL;
 687         int i;
 688         char *p;
 689         struct ldb_dn *partitions_basedn = samdb_partitions_dn(sam_ctx, mem_ctx);
 690
 691         const char * const _domain_attrs_1779[] = { "ncName", "dnsRoot", NULL};
 692         const char * const _result_attrs_null[] = { NULL };
 693
 694         const char * const _domain_attrs_canonical[] = { "ncName", "dnsRoot", NULL};
 695         const char * const _result_attrs_canonical[] = { "canonicalName", NULL };
 696
 697         const char * const _domain_attrs_nt4[] = { "ncName", "dnsRoot", "nETBIOSName", NULL};
 698         const char * const _result_attrs_nt4[] = { "sAMAccountName", "objectSid", "objectClass", NULL};
 699
 700         const char * const _domain_attrs_guid[] = { "ncName", "dnsRoot", NULL};
 701         const char * const _result_attrs_guid[] = { "objectGUID", NULL};
 702
 703         const char * const _domain_attrs_display[] = { "ncName", "dnsRoot", NULL};
 704         const char * const _result_attrs_display[] = { "displayName", "samAccountName", NULL};
 705
 706         const char * const _domain_attrs_none[] = { "ncName", "dnsRoot" , NULL};
 707         const char * const _result_attrs_none[] = { NULL};
 708
 709         /* here we need to set the attrs lists for domain and result lookups */
 710         switch (format_desired) {
 711         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779:
 712         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 713                 domain_attrs = _domain_attrs_1779;
 714                 result_attrs = _result_attrs_null;
 715                 break;
 716         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 717                 domain_attrs = _domain_attrs_canonical;
 718                 result_attrs = _result_attrs_canonical;
 719                 break;
 720         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT:
 721                 domain_attrs = _domain_attrs_nt4;
 722                 result_attrs = _result_attrs_nt4;
 723                 break;
 724         case DRSUAPI_DS_NAME_FORMAT_GUID:
 725                 domain_attrs = _domain_attrs_guid;
 726                 result_attrs = _result_attrs_guid;
 727                 break;
 728         case DRSUAPI_DS_NAME_FORMAT_DISPLAY:
 729                 domain_attrs = _domain_attrs_display;
 730                 result_attrs = _result_attrs_display;
 731                 break;
 732         default:
 733                 domain_attrs = _domain_attrs_none;
 734                 result_attrs = _result_attrs_none;
 735                 break;
 736         }
 737
 738         if (domain_filter) {
 739                 /* if we have a domain_filter look it up and set the result_basedn and the dns_domain_name */
 740                 ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res,
 741                                              partitions_basedn,
 742                                              LDB_SCOPE_ONELEVEL,
 743                                              domain_attrs,
 744                                              "%s", domain_filter);
 745
 746                 if (ldb_ret != LDB_SUCCESS) {
 747                         DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s", ldb_errstring(sam_ctx)));
 748                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 749                         return WERR_OK;
 750                 }
 751
 752                 switch (domain_res->count) {
 753                 case 1:
 754                         break;
 755                 case 0:
 756                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 757                         return WERR_OK;
 758                 default:
 759                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 760                         return WERR_OK;
 761                 }
 762
 763                 info1->dns_domain_name  = samdb_result_string(domain_res->msgs[0], "dnsRoot", NULL);
 764                 W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
 765                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 766         } else {
 767                 info1->dns_domain_name  = NULL;
 768                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 769         }
 770
 771         if (result_filter) {
 772                 int ret;
 773                 struct ldb_result *res;
 774                 if (domain_res) {
 775                         result_basedn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
 776
 777                         ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &res,
 778                                                  result_basedn, LDB_SCOPE_SUBTREE,
 779                                                  result_attrs, "%s", result_filter);
 780                         if (ret != LDB_SUCCESS) {
 781                                 talloc_free(result_res);
 782                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 783                                 return WERR_OK;
 784                         }
 785                         ldb_ret = res->count;
 786                         result_res = res->msgs;
 787                 } else {
 788                         /* search with the 'phantom root' flag */
 789                         struct ldb_request *req;
 790
 791                         res = talloc_zero(mem_ctx, struct ldb_result);
 792                         W_ERROR_HAVE_NO_MEMORY(res);
 793
 794                         ret = ldb_build_search_req(&req, sam_ctx, mem_ctx,
 795                                                    ldb_get_root_basedn(sam_ctx),
 796                                                    LDB_SCOPE_SUBTREE,
 797                                                    result_filter,
 798                                                    result_attrs,
 799                                                    NULL,
 800                                                    res,
 801                                                    ldb_search_default_callback);
 802                         if (ret == LDB_SUCCESS) {
 803                                 struct ldb_search_options_control *search_options;
 804                                 search_options = talloc(req, struct ldb_search_options_control);
 805                                 W_ERROR_HAVE_NO_MEMORY(search_options);
 806                                 search_options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
 807
 808                                 ret = ldb_request_add_control(req, LDB_CONTROL_SEARCH_OPTIONS_OID, false, search_options);
 809                         }
 810                         if (ret != LDB_SUCCESS) {
 811                                 talloc_free(res);
 812                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 813                                 return WERR_OK;
 814                         }
 815
 816                         ldb_set_timeout(sam_ctx, req, 0); /* use default timeout */
 817
 818                         ret = ldb_request(sam_ctx, req);
 819
 820                         if (ret == LDB_SUCCESS) {
 821                                 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
 822                         }
 823
 824                         talloc_free(req);
 825
 826                         if (ret != LDB_SUCCESS) {
 827                                 DEBUG(2, ("DsCrackNameOneFilter phantom root search failed: %s",
 828                                           ldb_errstring(sam_ctx)));
 829                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 830                                 return WERR_OK;
 831                         }
 832                         ldb_ret = res->count;
 833                         result_res = res->msgs;
 834                 }
 835         } else if (format_offered == DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
 836                 ldb_ret = gendb_search_dn(sam_ctx, mem_ctx, name_dn, &result_res,
 837                                           result_attrs);
 838         } else if (domain_res) {
 839                 name_dn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
 840                 ldb_ret = gendb_search_dn(sam_ctx, mem_ctx, name_dn, &result_res,
 841                                           result_attrs);
 842         } else {
 843                 /* Can't happen */
 844                 DEBUG(0, ("LOGIC ERROR: DsCrackNameOneFilter domain ref search not availible: This can't happen..."));
 845                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 846                 return WERR_OK;
 847         }
 848
 849         switch (ldb_ret) {
 850         case 1:
 851                 result = result_res[0];
 852                 break;
 853         case 0:
 854                 switch (format_offered) {
 855                 case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL:
 856                         return DsCrackNameSPNAlias(sam_ctx, mem_ctx,
 857                                                    smb_krb5_context,
 858                                                    format_flags, format_offered, format_desired,
 859                                                    name, info1);
 860
 861                 case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL:
 862                         return DsCrackNameUPN(sam_ctx, mem_ctx, smb_krb5_context,
 863                                               format_flags, format_offered, format_desired,
 864                                               name, info1);
 865                 }
 866                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 867                 return WERR_OK;
 868         case -1:
 869                 DEBUG(2, ("DsCrackNameOneFilter result search failed: %s", ldb_errstring(sam_ctx)));
 870                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 871                 return WERR_OK;
 872         default:
 873                 switch (format_offered) {
 874                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 875                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 876                 {
 877                         const char *canonical_name = NULL; /* Not required, but we get warnings... */
 878                         /* We may need to manually filter further */
 879                         for (i = 0; i < ldb_ret; i++) {
 880                                 switch (format_offered) {
 881                                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 882                                         canonical_name = ldb_dn_canonical_string(mem_ctx, result_res[i]->dn);
 883                                         break;
 884                                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 885                                         canonical_name = ldb_dn_canonical_ex_string(mem_ctx, result_res[i]->dn);
 886                                         break;
 887                                 }
 888                                 if (strcasecmp_m(canonical_name, name) == 0) {
 889                                         result = result_res[i];
 890                                         break;
 891                                 }
 892                         }
 893                         if (!result) {
 894                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 895                                 return WERR_OK;
 896                         }
 897                 }
 898                 default:
 899                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 900                         return WERR_OK;
 901                 }
 902         }
 903
 904         info1->dns_domain_name = ldb_dn_canonical_string(mem_ctx, result->dn);
 905         W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
 906         p = strchr(info1->dns_domain_name, '/');
 907         if (p) {
 908                 p[0] = '\0';
 909         }
 910
 911         /* here we can use result and domain_res[0] */
 912         switch (format_desired) {
 913         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779: {
 914                 info1->result_name      = ldb_dn_alloc_linearized(mem_ctx, result->dn);
 915                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
 916
 917                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
 918                 return WERR_OK;
 919         }
 920         case DRSUAPI_DS_NAME_FORMAT_CANONICAL: {
 921                 info1->result_name      = samdb_result_string(result, "canonicalName", NULL);
 922                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
 923                 return WERR_OK;
 924         }
 925         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX: {
 926                 /* Not in the virtual ldb attribute */
 927                 return DsCrackNameOneSyntactical(mem_ctx,
 928                                                  DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
 929                                                  DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX,
 930                                                  result->dn, name, info1);
 931         }
 932         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
 933
 934                 const struct dom_sid *sid = samdb_result_dom_sid(mem_ctx, result, "objectSid");
 935                 const char *_acc = "", *_dom = "";
 936
 937                 if (samdb_find_attribute(sam_ctx, result, "objectClass", "domain")) {
 938
 939                         ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res,
 940                                                      partitions_basedn,
 941                                                      LDB_SCOPE_ONELEVEL,
 942                                                      domain_attrs,
 943                                                      "(ncName=%s)", ldb_dn_get_linearized(result->dn));
 944
 945                         if (ldb_ret != LDB_SUCCESS) {
 946                                 DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s", ldb_errstring(sam_ctx)));
 947                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 948                                 return WERR_OK;
 949                         }
 950
 951                         switch (domain_res->count) {
 952                         case 1:
 953                                 break;
 954                         case 0:
 955                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 956                                 return WERR_OK;
 957                         default:
 958                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 959                                 return WERR_OK;
 960                         }
 961                         _dom = samdb_result_string(domain_res->msgs[0], "nETBIOSName", NULL);
 962                         W_ERROR_HAVE_NO_MEMORY(_dom);
 963                 } else {
 964                         _acc = samdb_result_string(result, "sAMAccountName", NULL);
 965                         if (!_acc) {
 966                                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
 967                                 return WERR_OK;
 968                         }
 969                         if (dom_sid_in_domain(dom_sid_parse_talloc(mem_ctx, SID_BUILTIN), sid)) {
 970                                 _dom = "BUILTIN";
 971                         } else {
 972                                 const char *attrs[] = { NULL };
 973                                 struct ldb_result *domain_res2;
 974                                 struct dom_sid *dom_sid = dom_sid_dup(mem_ctx, sid);
 975                                 if (!dom_sid) {
 976                                         return WERR_OK;
 977                                 }
 978                                 dom_sid->num_auths--;
 979                                 ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res,
 980                                                              NULL,
 981                                                              LDB_SCOPE_BASE,
 982                                                              attrs,
 983                                                              "(&(objectSid=%s)(objectClass=domain))",
 984                                                              ldap_encode_ndr_dom_sid(mem_ctx, dom_sid));
 985
 986                                 if (ldb_ret != LDB_SUCCESS) {
 987                                         DEBUG(2, ("DsCrackNameOneFilter domain search failed: %s", ldb_errstring(sam_ctx)));
 988                                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 989                                         return WERR_OK;
 990                                 }
 991
 992                                 switch (domain_res->count) {
 993                                 case 1:
 994                                         break;
 995                                 case 0:
 996                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 997                                         return WERR_OK;
 998                                 default:
 999                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1000                                         return WERR_OK;
1001                                 }
1002
1003                                 ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res2,
1004                                                              partitions_basedn,
1005                                                              LDB_SCOPE_ONELEVEL,
1006                                                              domain_attrs,
1007                                                              "(ncName=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
1008
1009                                 if (ldb_ret != LDB_SUCCESS) {
1010                                         DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s", ldb_errstring(sam_ctx)));
1011                                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1012                                         return WERR_OK;
1013                                 }
1014
1015                                 switch (domain_res2->count) {
1016                                 case 1:
1017                                         break;
1018                                 case 0:
1019                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1020                                         return WERR_OK;
1021                                 default:
1022                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1023                                         return WERR_OK;
1024                                 }
1025                                 _dom = samdb_result_string(domain_res2->msgs[0], "nETBIOSName", NULL);
1026                                 W_ERROR_HAVE_NO_MEMORY(_dom);
1027                         }
1028                 }
1029
1030                 info1->result_name      = talloc_asprintf(mem_ctx, "%s\\%s", _dom, _acc);
1031                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1032
1033                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1034                 return WERR_OK;
1035         }
1036         case DRSUAPI_DS_NAME_FORMAT_GUID: {
1037                 struct GUID guid;
1038
1039                 guid = samdb_result_guid(result, "objectGUID");
1040
1041                 info1->result_name      = GUID_string2(mem_ctx, &guid);
1042                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1043
1044                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1045                 return WERR_OK;
1046         }
1047         case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
1048                 info1->result_name      = samdb_result_string(result, "displayName", NULL);
1049                 if (!info1->result_name) {
1050                         info1->result_name      = samdb_result_string(result, "sAMAccountName", NULL);
1051                 }
1052                 if (!info1->result_name) {
1053                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1054                 } else {
1055                         info1->status = DRSUAPI_DS_NAME_STATUS_OK;
1056                 }
1057                 return WERR_OK;
1058         }
1059         case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
1060                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1061                 return WERR_OK;
1062         }
1063         case DRSUAPI_DS_NAME_FORMAT_DNS_DOMAIN:
1064         case DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY: {
1065                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1066                 return WERR_OK;
1067         }
1068         default:
1069                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
1070                 return WERR_OK;
1071         }
1072 }
1073
1074 /* Given a user Principal Name (such as foo@bar.com),
1075  * return the user and domain DNs.  This is used in the KDC to then
1076  * return the Keys and evaluate policy */
1077
1078 NTSTATUS crack_user_principal_name(struct ldb_context *sam_ctx,
1079                                    TALLOC_CTX *mem_ctx,
1080                                    const char *user_principal_name,
1081                                    struct ldb_dn **user_dn,
1082                                    struct ldb_dn **domain_dn)
1083 {
1084         WERROR werr;
1085         struct drsuapi_DsNameInfo1 info1;
1086         werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1087                                   DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL,
1088                                   DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1089                                   user_principal_name,
1090                                   &info1);
1091         if (!W_ERROR_IS_OK(werr)) {
1092                 return werror_to_ntstatus(werr);
1093         }
1094         switch (info1.status) {
1095         case DRSUAPI_DS_NAME_STATUS_OK:
1096                 break;
1097         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1098         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1099         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1100                 return NT_STATUS_NO_SUCH_USER;
1101         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1102         default:
1103                 return NT_STATUS_UNSUCCESSFUL;
1104         }
1105
1106         *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1107
1108         if (domain_dn) {
1109                 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1110                                           DRSUAPI_DS_NAME_FORMAT_CANONICAL,
1111                                           DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1112                                           talloc_asprintf(mem_ctx, "%s/",
1113                                                           info1.dns_domain_name),
1114                                           &info1);
1115                 if (!W_ERROR_IS_OK(werr)) {
1116                         return werror_to_ntstatus(werr);
1117                 }
1118                 switch (info1.status) {
1119                 case DRSUAPI_DS_NAME_STATUS_OK:
1120                         break;
1121                 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1122                 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1123                 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1124                         return NT_STATUS_NO_SUCH_USER;
1125                 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1126                 default:
1127                         return NT_STATUS_UNSUCCESSFUL;
1128                 }
1129
1130                 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1131         }
1132
1133         return NT_STATUS_OK;
1134
1135 }
1136
1137 /* Given a Service Principal Name (such as host/foo.bar.com@BAR.COM),
1138  * return the user and domain DNs.  This is used in the KDC to then
1139  * return the Keys and evaluate policy */
1140
1141 NTSTATUS crack_service_principal_name(struct ldb_context *sam_ctx,
1142                                       TALLOC_CTX *mem_ctx,
1143                                       const char *service_principal_name,
1144                                       struct ldb_dn **user_dn,
1145                                       struct ldb_dn **domain_dn)
1146 {
1147         WERROR werr;
1148         struct drsuapi_DsNameInfo1 info1;
1149         werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1150                                   DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL,
1151                                   DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1152                                   service_principal_name,
1153                                   &info1);
1154         if (!W_ERROR_IS_OK(werr)) {
1155                 return werror_to_ntstatus(werr);
1156         }
1157         switch (info1.status) {
1158         case DRSUAPI_DS_NAME_STATUS_OK:
1159                 break;
1160         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1161         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1162         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1163                 return NT_STATUS_NO_SUCH_USER;
1164         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1165         default:
1166                 return NT_STATUS_UNSUCCESSFUL;
1167         }
1168
1169         *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1170
1171         if (domain_dn) {
1172                 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1173                                           DRSUAPI_DS_NAME_FORMAT_CANONICAL,
1174                                           DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1175                                           talloc_asprintf(mem_ctx, "%s/",
1176                                                           info1.dns_domain_name),
1177                                           &info1);
1178                 if (!W_ERROR_IS_OK(werr)) {
1179                         return werror_to_ntstatus(werr);
1180                 }
1181                 switch (info1.status) {
1182                 case DRSUAPI_DS_NAME_STATUS_OK:
1183                         break;
1184                 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1185                 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1186                 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1187                         return NT_STATUS_NO_SUCH_USER;
1188                 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1189                 default:
1190                         return NT_STATUS_UNSUCCESSFUL;
1191                 }
1192
1193                 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1194         }
1195
1196         return NT_STATUS_OK;
1197
1198 }
1199
1200 NTSTATUS crack_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1201                                 struct event_context *ev_ctx,
1202                                 struct loadparm_context *lp_ctx,
1203                                 uint32_t format_offered,
1204                                 const char *name,
1205                                 const char **nt4_domain, const char **nt4_account)
1206 {
1207         WERROR werr;
1208         struct drsuapi_DsNameInfo1 info1;
1209         struct ldb_context *ldb;
1210         char *p;
1211
1212         /* Handle anonymous bind */
1213         if (!name || !*name) {
1214                 *nt4_domain = "";
1215                 *nt4_account = "";
1216                 return NT_STATUS_OK;
1217         }
1218
1219         ldb = samdb_connect(mem_ctx, ev_ctx, lp_ctx, system_session(mem_ctx, lp_ctx));
1220         if (ldb == NULL) {
1221                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
1222         }
1223
1224         werr = DsCrackNameOneName(ldb, mem_ctx, 0,
1225                                   format_offered,
1226                                   DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT,
1227                                   name,
1228                                   &info1);
1229         if (!W_ERROR_IS_OK(werr)) {
1230                 return werror_to_ntstatus(werr);
1231         }
1232         switch (info1.status) {
1233         case DRSUAPI_DS_NAME_STATUS_OK:
1234                 break;
1235         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1236         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1237         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1238                 return NT_STATUS_NO_SUCH_USER;
1239         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1240         default:
1241                 return NT_STATUS_UNSUCCESSFUL;
1242         }
1243
1244         *nt4_domain = talloc_strdup(mem_ctx, info1.result_name);
1245
1246         p = strchr(*nt4_domain, '\\');
1247         if (!p) {
1248                 return NT_STATUS_INVALID_PARAMETER;
1249         }
1250         p[0] = '\0';
1251
1252         if (p[1]) {
1253                 *nt4_account = talloc_strdup(mem_ctx, &p[1]);
1254         }
1255
1256         if (!*nt4_account || !*nt4_domain) {
1257                 return NT_STATUS_NO_MEMORY;
1258         }
1259
1260         return NT_STATUS_OK;
1261 }
1262
1263 NTSTATUS crack_auto_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1264                                      struct event_context *ev_ctx,
1265                                      struct loadparm_context *lp_ctx,
1266                                      const char *name,
1267                                      const char **nt4_domain,
1268                                      const char **nt4_account)
1269 {
1270         uint32_t format_offered = DRSUAPI_DS_NAME_FORMAT_UKNOWN;
1271
1272         /* Handle anonymous bind */
1273         if (!name || !*name) {
1274                 *nt4_domain = "";
1275                 *nt4_account = "";
1276                 return NT_STATUS_OK;
1277         }
1278
1279         if (strchr_m(name, '=')) {
1280                 format_offered = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
1281         } else if (strchr_m(name, '@')) {
1282                 format_offered = DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL;
1283         } else if (strchr_m(name, '\\')) {
1284                 format_offered = DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT;
1285         } else if (strchr_m(name, '/')) {
1286                 format_offered = DRSUAPI_DS_NAME_FORMAT_CANONICAL;
1287         }
1288
1289         return crack_name_to_nt4_name(mem_ctx, ev_ctx, lp_ctx, format_offered, name, nt4_domain, nt4_account);
1290 }