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