source4/dsdb/samdb/cracknames.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    endpoint server for the drsuapi pipe
   5    DsCrackNames()
   6
   7    Copyright (C) Stefan Metzmacher 2004
   8    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 */
  23
  24 #include "includes.h"
  25 #include "librpc/gen_ndr/drsuapi.h"
  26 #include "rpc_server/common/common.h"
  27 #include "lib/ldb/include/ldb_errors.h"
  28 #include "system/kerberos.h"
  29 #include "auth/kerberos/kerberos.h"
  30 #include "libcli/ldap/ldap.h"
  31 #include "libcli/security/security.h"
  32 #include "librpc/gen_ndr/ndr_misc.h"
  33 #include "auth/auth.h"
  34 #include "util/util_ldb.h"
  35 #include "dsdb/samdb/samdb.h"
  36 #include "param/param.h"
  37
  38 static WERROR DsCrackNameOneFilter(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
  39                                    struct smb_krb5_context *smb_krb5_context,
  40                                    uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
  41                                    struct ldb_dn *name_dn, const char *name,
  42                                    const char *domain_filter, const char *result_filter,
  43                                    struct drsuapi_DsNameInfo1 *info1);
  44 static WERROR DsCrackNameOneSyntactical(TALLOC_CTX *mem_ctx,
  45                                         uint32_t format_offered, uint32_t format_desired,
  46                                         struct ldb_dn *name_dn, const char *name,
  47                                         struct drsuapi_DsNameInfo1 *info1);
  48
  49 static WERROR dns_domain_from_principal(TALLOC_CTX *mem_ctx, struct smb_krb5_context *smb_krb5_context,
  50                                         const char *name,
  51                                         struct drsuapi_DsNameInfo1 *info1)
  52 {
  53         krb5_error_code ret;
  54         krb5_principal principal;
  55         /* perhaps it's a principal with a realm, so return the right 'domain only' response */
  56         char **realm;
  57         ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
  58                                     KRB5_PRINCIPAL_PARSE_MUST_REALM, &principal);
  59         if (ret) {
  60                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
  61                 return WERR_OK;
  62         }
  63
  64         /* This isn't an allocation assignemnt, so it is free'ed with the krb5_free_principal */
  65         realm = krb5_princ_realm(smb_krb5_context->krb5_context, principal);
  66
  67         info1->dns_domain_name  = talloc_strdup(mem_ctx, *realm);
  68         krb5_free_principal(smb_krb5_context->krb5_context, principal);
  69
  70         W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
  71
  72         info1->status = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
  73         return WERR_OK;
  74 }
  75
  76 static enum drsuapi_DsNameStatus LDB_lookup_spn_alias(krb5_context context, struct ldb_context *ldb_ctx,
  77                                                       TALLOC_CTX *mem_ctx,
  78                                                       const char *alias_from,
  79                                                       char **alias_to)
  80 {
  81         int i;
  82         int ret;
  83         struct ldb_result *res;
  84         struct ldb_message_element *spnmappings;
  85         TALLOC_CTX *tmp_ctx;
  86         struct ldb_dn *service_dn;
  87         char *service_dn_str;
  88
  89         const char *directory_attrs[] = {
  90                 "sPNMappings",
  91                 NULL
  92         };
  93
  94         tmp_ctx = talloc_new(mem_ctx);
  95         if (!tmp_ctx) {
  96                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
  97         }
  98
  99         service_dn = ldb_dn_new(tmp_ctx, ldb_ctx, "CN=Directory Service,CN=Windows NT,CN=Services");
 100         if ( ! ldb_dn_add_base(service_dn, samdb_config_dn(ldb_ctx))) {
 101                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 102         }
 103         service_dn_str = ldb_dn_alloc_linearized(tmp_ctx, service_dn);
 104         if ( ! service_dn_str) {
 105                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 106         }
 107
 108         ret = ldb_search(ldb_ctx, service_dn, LDB_SCOPE_BASE, "(objectClass=nTDSService)",
 109                          directory_attrs, &res);
 110
 111         if (ret != LDB_SUCCESS && ret != LDB_ERR_NO_SUCH_OBJECT) {
 112                 DEBUG(1, ("ldb_search: dn: %s not found: %s", service_dn_str, ldb_errstring(ldb_ctx)));
 113                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 114         } else if (ret == LDB_ERR_NO_SUCH_OBJECT) {
 115                 DEBUG(1, ("ldb_search: dn: %s not found", service_dn_str));
 116                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 117         } else if (res->count != 1) {
 118                 talloc_free(res);
 119                 DEBUG(1, ("ldb_search: dn: %s not found", service_dn_str));
 120                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 121         }
 122         talloc_steal(tmp_ctx, res);
 123
 124         spnmappings = ldb_msg_find_element(res->msgs[0], "sPNMappings");
 125         if (!spnmappings || spnmappings->num_values == 0) {
 126                 DEBUG(1, ("ldb_search: dn: %s no sPNMappings attribute", service_dn_str));
 127                 talloc_free(tmp_ctx);
 128                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 129         }
 130
 131         for (i = 0; i < spnmappings->num_values; i++) {
 132                 char *mapping, *p, *str;
 133                 mapping = talloc_strdup(tmp_ctx,
 134                                         (const char *)spnmappings->values[i].data);
 135                 if (!mapping) {
 136                         DEBUG(1, ("LDB_lookup_spn_alias: ldb_search: dn: %s did not have an sPNMapping\n", service_dn_str));
 137                         talloc_free(tmp_ctx);
 138                         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 139                 }
 140
 141                 /* C string manipulation sucks */
 142
 143                 p = strchr(mapping, '=');
 144                 if (!p) {
 145                         DEBUG(1, ("ldb_search: dn: %s sPNMapping malformed: %s\n",
 146                                   service_dn_str, mapping));
 147                         talloc_free(tmp_ctx);
 148                         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 149                 }
 150                 p[0] = '\0';
 151                 p++;
 152                 do {
 153                         str = p;
 154                         p = strchr(p, ',');
 155                         if (p) {
 156                                 p[0] = '\0';
 157                                 p++;
 158                         }
 159                         if (strcasecmp(str, alias_from) == 0) {
 160                                 *alias_to = mapping;
 161                                 talloc_steal(mem_ctx, mapping);
 162                                 talloc_free(tmp_ctx);
 163                                 return DRSUAPI_DS_NAME_STATUS_OK;
 164                         }
 165                 } while (p);
 166         }
 167         DEBUG(4, ("LDB_lookup_spn_alias: no alias for service %s applicable\n", alias_from));
 168         talloc_free(tmp_ctx);
 169         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 170 }
 171
 172 /* When cracking a ServicePrincipalName, many services may be served
 173  * by the host/ servicePrincipalName.  The incoming query is for cifs/
 174  * but we translate it here, and search on host/.  This is done after
 175  * the cifs/ entry has been searched for, making this a fallback */
 176
 177 static WERROR DsCrackNameSPNAlias(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 178                                   struct smb_krb5_context *smb_krb5_context,
 179                                   uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
 180                                   const char *name, struct drsuapi_DsNameInfo1 *info1)
 181 {
 182         WERROR wret;
 183         krb5_error_code ret;
 184         krb5_principal principal;
 185         const char *service, *dns_name;
 186         char *new_service;
 187         char *new_princ;
 188         enum drsuapi_DsNameStatus namestatus;
 189
 190         /* parse principal */
 191         ret = krb5_parse_name_flags(smb_krb5_context->krb5_context,
 192                                     name, KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
 193         if (ret) {
 194                 DEBUG(2, ("Could not parse principal: %s: %s",
 195                           name, smb_get_krb5_error_message(smb_krb5_context->krb5_context,
 196                                                            ret, mem_ctx)));
 197                 return WERR_NOMEM;
 198         }
 199
 200         /* grab cifs/, http/ etc */
 201
 202         /* This is checked for in callers, but be safe */
 203         if (principal->name.name_string.len < 2) {
 204                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 205                 return WERR_OK;
 206         }
 207         service = principal->name.name_string.val[0];
 208         dns_name = principal->name.name_string.val[1];
 209
 210         /* MAP it */
 211         namestatus = LDB_lookup_spn_alias(smb_krb5_context->krb5_context,
 212                                           sam_ctx, mem_ctx,
 213                                           service, &new_service);
 214
 215         if (namestatus == DRSUAPI_DS_NAME_STATUS_NOT_FOUND) {
 216                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 217                 info1->dns_domain_name  = talloc_strdup(mem_ctx, dns_name);
 218                 if (!info1->dns_domain_name) {
 219                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 220                         return WERR_NOMEM;
 221                 }
 222                 return WERR_OK;
 223         } else if (namestatus != DRSUAPI_DS_NAME_STATUS_OK) {
 224                 info1->status = namestatus;
 225                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 226                 return WERR_OK;
 227         }
 228
 229         /* ooh, very nasty playing around in the Principal... */
 230         free(principal->name.name_string.val[0]);
 231         principal->name.name_string.val[0] = strdup(new_service);
 232         if (!principal->name.name_string.val[0]) {
 233                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 234                 return WERR_NOMEM;
 235         }
 236
 237         /* reform principal */
 238         ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 239                                       KRB5_PRINCIPAL_UNPARSE_NO_REALM, &new_princ);
 240
 241         if (ret) {
 242                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 243                 return WERR_NOMEM;
 244         }
 245
 246         wret = DsCrackNameOneName(sam_ctx, mem_ctx, format_flags, format_offered, format_desired,
 247                                   new_princ, info1);
 248         free(new_princ);
 249         if (W_ERROR_IS_OK(wret) && (info1->status == DRSUAPI_DS_NAME_STATUS_NOT_FOUND)) {
 250                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 251                 info1->dns_domain_name  = talloc_strdup(mem_ctx, dns_name);
 252                 if (!info1->dns_domain_name) {
 253                         wret = WERR_NOMEM;
 254                 }
 255         }
 256         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 257         return wret;
 258 }
 259
 260 /* Subcase of CrackNames, for the userPrincipalName */
 261
 262 static WERROR DsCrackNameUPN(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 263                              struct smb_krb5_context *smb_krb5_context,
 264                              uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
 265                              const char *name, struct drsuapi_DsNameInfo1 *info1)
 266 {
 267         int ldb_ret;
 268         WERROR status;
 269         const char *domain_filter = NULL;
 270         const char *result_filter = NULL;
 271         krb5_error_code ret;
 272         krb5_principal principal;
 273         char **realm;
 274         char *unparsed_name_short;
 275         const char *domain_attrs[] = { NULL };
 276         struct ldb_result *domain_res = NULL;
 277
 278         /* Prevent recursion */
 279         if (!name) {
 280                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 281                 return WERR_OK;
 282         }
 283
 284         ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
 285                                     KRB5_PRINCIPAL_PARSE_MUST_REALM, &principal);
 286         if (ret) {
 287                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 288                 return WERR_OK;
 289         }
 290
 291         realm = krb5_princ_realm(smb_krb5_context->krb5_context, principal);
 292
 293         ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res,
 294                                      samdb_partitions_dn(sam_ctx, mem_ctx),
 295                                      LDB_SCOPE_ONELEVEL,
 296                                      domain_attrs,
 297                                      "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))",
 298                                      ldb_binary_encode_string(mem_ctx, *realm),
 299                                      ldb_binary_encode_string(mem_ctx, *realm));
 300
 301         if (ldb_ret != LDB_SUCCESS) {
 302                 DEBUG(2, ("DsCrackNameUPN domain ref search failed: %s", ldb_errstring(sam_ctx)));
 303                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 304                 return WERR_OK;
 305         }
 306
 307         switch (domain_res->count) {
 308         case 1:
 309                 break;
 310         case 0:
 311                 return dns_domain_from_principal(mem_ctx, smb_krb5_context,
 312                                                  name, info1);
 313         default:
 314                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 315                 return WERR_OK;
 316         }
 317
 318         ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 319                                       KRB5_PRINCIPAL_UNPARSE_NO_REALM, &unparsed_name_short);
 320         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 321
 322         if (ret) {
 323                 free(unparsed_name_short);
 324                 return WERR_NOMEM;
 325         }
 326
 327         /* This may need to be extended for more userPrincipalName variations */
 328         result_filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
 329                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short));
 330
 331         domain_filter = talloc_asprintf(mem_ctx, "(dn=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
 332
 333         if (!result_filter || !domain_filter) {
 334                 free(unparsed_name_short);
 335                 return WERR_NOMEM;
 336         }
 337         status = DsCrackNameOneFilter(sam_ctx, mem_ctx,
 338                                       smb_krb5_context,
 339                                       format_flags, format_offered, format_desired,
 340                                       NULL, unparsed_name_short, domain_filter, result_filter,
 341                                       info1);
 342         free(unparsed_name_short);
 343
 344         return status;
 345 }
 346
 347 /* Crack a single 'name', from format_offered into format_desired, returning the result in info1 */
 348
 349 WERROR DsCrackNameOneName(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 350                           uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
 351                           const char *name, struct drsuapi_DsNameInfo1 *info1)
 352 {
 353         krb5_error_code ret;
 354         const char *domain_filter = NULL;
 355         const char *result_filter = NULL;
 356         struct ldb_dn *name_dn = NULL;
 357
 358         struct smb_krb5_context *smb_krb5_context;
 359         ret = smb_krb5_init_context(mem_ctx,
 360                                     (struct event_context *)ldb_get_opaque(sam_ctx, "EventContext"),
 361                                     (struct loadparm_context *)ldb_get_opaque(sam_ctx, "loadparm"),
 362                                     &smb_krb5_context);
 363
 364         if (ret) {
 365                 return WERR_NOMEM;
 366         }
 367
 368         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 369         info1->dns_domain_name = NULL;
 370         info1->result_name = NULL;
 371
 372         if (!name) {
 373                 return WERR_INVALID_PARAM;
 374         }
 375
 376         /* TODO: - fill the correct names in all cases!
 377          *       - handle format_flags
 378          */
 379
 380         /* here we need to set the domain_filter and/or the result_filter */
 381         switch (format_offered) {
 382         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 383         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 384         {
 385                 char *str, *s, *account;
 386
 387                 if (strlen(name) == 0) {
 388                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 389                         return WERR_OK;
 390                 }
 391
 392                 str = talloc_strdup(mem_ctx, name);
 393                 W_ERROR_HAVE_NO_MEMORY(str);
 394
 395                 if (format_offered == DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX) {
 396                         /* Look backwards for the \n, and replace it with / */
 397                         s = strrchr(str, '\n');
 398                         if (!s) {
 399                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 400                                 return WERR_OK;
 401                         }
 402                         s[0] = '/';
 403                 }
 404
 405                 s = strchr(str, '/');
 406                 if (!s) {
 407                         /* there must be at least one / */
 408                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 409                         return WERR_OK;
 410                 }
 411
 412                 s[0] = '\0';
 413                 s++;
 414
 415                 domain_filter = talloc_asprintf(mem_ctx, "(&(objectClass=crossRef)(ncName=%s))",
 416                                                 ldb_dn_get_linearized(samdb_dns_domain_to_dn(sam_ctx, mem_ctx, str)));
 417                 W_ERROR_HAVE_NO_MEMORY(domain_filter);
 418
 419                 /* There may not be anything after the domain component (search for the domain itself) */
 420                 if (s[0]) {
 421
 422                         account = strrchr(s, '/');
 423                         if (!account) {
 424                                 account = s;
 425                         } else {
 426                                 account++;
 427                         }
 428                         account = ldb_binary_encode_string(mem_ctx, account);
 429                         W_ERROR_HAVE_NO_MEMORY(account);
 430                         result_filter = talloc_asprintf(mem_ctx, "(name=%s)",
 431                                                         account);
 432                         W_ERROR_HAVE_NO_MEMORY(result_filter);
 433                 }
 434                 break;
 435         }
 436         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
 437                 char *p;
 438                 char *domain;
 439                 const char *account = NULL;
 440
 441                 domain = talloc_strdup(mem_ctx, name);
 442                 W_ERROR_HAVE_NO_MEMORY(domain);
 443
 444                 p = strchr(domain, '\\');
 445                 if (!p) {
 446                         /* invalid input format */
 447                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 448                         return WERR_OK;
 449                 }
 450                 p[0] = '\0';
 451
 452                 if (p[1]) {
 453                         account = &p[1];
 454                 }
 455
 456                 domain_filter = talloc_asprintf(mem_ctx,
 457                                                 "(&(&(nETBIOSName=%s)(objectclass=crossRef))(ncName=*))",
 458                                                 ldb_binary_encode_string(mem_ctx, domain));
 459                 W_ERROR_HAVE_NO_MEMORY(domain_filter);
 460                 if (account) {
 461                         result_filter = talloc_asprintf(mem_ctx, "(sAMAccountName=%s)",
 462                                                         ldb_binary_encode_string(mem_ctx, account));
 463                         W_ERROR_HAVE_NO_MEMORY(result_filter);
 464                 }
 465
 466                 talloc_free(domain);
 467                 break;
 468         }
 469
 470                 /* A LDAP DN as a string */
 471         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779: {
 472                 domain_filter = NULL;
 473                 name_dn = ldb_dn_new(mem_ctx, sam_ctx, name);
 474                 if (! ldb_dn_validate(name_dn)) {
 475                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 476                         return WERR_OK;
 477                 }
 478                 break;
 479         }
 480
 481                 /* A GUID as a string */
 482         case DRSUAPI_DS_NAME_FORMAT_GUID: {
 483                 struct GUID guid;
 484                 char *ldap_guid;
 485                 NTSTATUS nt_status;
 486                 domain_filter = NULL;
 487
 488                 nt_status = GUID_from_string(name, &guid);
 489                 if (!NT_STATUS_IS_OK(nt_status)) {
 490                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 491                         return WERR_OK;
 492                 }
 493
 494                 ldap_guid = ldap_encode_ndr_GUID(mem_ctx, &guid);
 495                 if (!ldap_guid) {
 496                         return WERR_NOMEM;
 497                 }
 498                 result_filter = talloc_asprintf(mem_ctx, "(objectGUID=%s)",
 499                                                 ldap_guid);
 500                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 501                 break;
 502         }
 503         case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
 504                 domain_filter = NULL;
 505
 506                 result_filter = talloc_asprintf(mem_ctx, "(|(displayName=%s)(samAccountName=%s))",
 507                                                 ldb_binary_encode_string(mem_ctx, name),
 508                                                 ldb_binary_encode_string(mem_ctx, name));
 509                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 510                 break;
 511         }
 512
 513                 /* A S-1234-5678 style string */
 514         case DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY: {
 515                 struct dom_sid *sid = dom_sid_parse_talloc(mem_ctx, name);
 516                 char *ldap_sid;
 517
 518                 domain_filter = NULL;
 519                 if (!sid) {
 520                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 521                         return WERR_OK;
 522                 }
 523                 ldap_sid = ldap_encode_ndr_dom_sid(mem_ctx,
 524                                                    sid);
 525                 if (!ldap_sid) {
 526                         return WERR_NOMEM;
 527                 }
 528                 result_filter = talloc_asprintf(mem_ctx, "(objectSid=%s)",
 529                                                 ldap_sid);
 530                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 531                 break;
 532         }
 533         case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL: {
 534                 krb5_principal principal;
 535                 char *unparsed_name;
 536                 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
 537                 if (ret) {
 538                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 539                         return WERR_OK;
 540                 }
 541
 542                 domain_filter = NULL;
 543
 544                 ret = krb5_unparse_name(smb_krb5_context->krb5_context, principal, &unparsed_name);
 545                 if (ret) {
 546                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 547                         return WERR_NOMEM;
 548                 }
 549
 550                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 551                 result_filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(userPrincipalName=%s))",
 552                                                 ldb_binary_encode_string(mem_ctx, unparsed_name));
 553
 554                 free(unparsed_name);
 555                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 556                 break;
 557         }
 558         case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
 559                 krb5_principal principal;
 560                 char *unparsed_name_short;
 561                 char *service;
 562                 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
 563                 if (ret == 0 && principal->name.name_string.len < 2) {
 564                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 565                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 566                         return WERR_OK;
 567                 }
 568                 ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
 569                                             KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
 570                 if (ret) {
 571                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 572
 573                         return dns_domain_from_principal(mem_ctx, smb_krb5_context,
 574                                                          name, info1);
 575                 }
 576
 577                 domain_filter = NULL;
 578
 579                 ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 580                                               KRB5_PRINCIPAL_UNPARSE_NO_REALM, &unparsed_name_short);
 581                 if (ret) {
 582                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 583                         return WERR_NOMEM;
 584                 }
 585
 586                 service = principal->name.name_string.val[0];
 587                 if ((principal->name.name_string.len == 2) && (strcasecmp(service, "host") == 0)) {
 588                         /* the 'cn' attribute is just the leading part of the name */
 589                         char *computer_name;
 590                         computer_name = talloc_strndup(mem_ctx, principal->name.name_string.val[1],
 591                                                       strcspn(principal->name.name_string.val[1], "."));
 592                         if (computer_name == NULL) {
 593                                 return WERR_NOMEM;
 594                         }
 595
 596                         result_filter = talloc_asprintf(mem_ctx, "(|(&(servicePrincipalName=%s)(objectClass=user))(&(cn=%s)(objectClass=computer)))",
 597                                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short),
 598                                                         ldb_binary_encode_string(mem_ctx, computer_name));
 599                 } else {
 600                         result_filter = talloc_asprintf(mem_ctx, "(&(servicePrincipalName=%s)(objectClass=user))",
 601                                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short));
 602                 }
 603                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 604                 free(unparsed_name_short);
 605                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 606
 607                 break;
 608         }
 609         default: {
 610                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 611                 return WERR_OK;
 612         }
 613
 614         }
 615
 616         if (format_flags & DRSUAPI_DS_NAME_FLAG_SYNTACTICAL_ONLY) {
 617                 return DsCrackNameOneSyntactical(mem_ctx, format_offered, format_desired,
 618                                                  name_dn, name, info1);
 619         }
 620
 621         return DsCrackNameOneFilter(sam_ctx, mem_ctx,
 622                                     smb_krb5_context,
 623                                     format_flags, format_offered, format_desired,
 624                                     name_dn, name,
 625                                     domain_filter, result_filter,
 626                                     info1);
 627 }
 628
 629 /* Subcase of CrackNames.  It is possible to translate a LDAP-style DN
 630  * (FQDN_1779) into a canoical name without actually searching the
 631  * database */
 632
 633 static WERROR DsCrackNameOneSyntactical(TALLOC_CTX *mem_ctx,
 634                                         uint32_t format_offered, uint32_t format_desired,
 635                                         struct ldb_dn *name_dn, const char *name,
 636                                         struct drsuapi_DsNameInfo1 *info1)
 637 {
 638         char *cracked;
 639         if (format_offered != DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
 640                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
 641                 return WERR_OK;
 642         }
 643
 644         switch (format_desired) {
 645         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 646                 cracked = ldb_dn_canonical_string(mem_ctx, name_dn);
 647                 break;
 648         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 649                 cracked = ldb_dn_canonical_ex_string(mem_ctx, name_dn);
 650                 break;
 651         default:
 652                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
 653                 return WERR_OK;
 654         }
 655         info1->status = DRSUAPI_DS_NAME_STATUS_OK;
 656         info1->result_name      = cracked;
 657         if (!cracked) {
 658                 return WERR_NOMEM;
 659         }
 660
 661         return WERR_OK;
 662 }
 663
 664 /* Given a filter for the domain, and one for the result, perform the
 665  * ldb search. The format offered and desired flags change the
 666  * behaviours, including what attributes to return.
 667  *
 668  * The smb_krb5_context is required because we use the krb5 libs for principal parsing
 669  */
 670
 671 static WERROR DsCrackNameOneFilter(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 672                                    struct smb_krb5_context *smb_krb5_context,
 673                                    uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
 674                                    struct ldb_dn *name_dn, const char *name,
 675                                    const char *domain_filter, const char *result_filter,
 676                                    struct drsuapi_DsNameInfo1 *info1)
 677 {
 678         int ldb_ret;
 679         struct ldb_result *domain_res = NULL;
 680         const char * const *domain_attrs;
 681         const char * const *result_attrs;
 682         struct ldb_message **result_res = NULL;
 683         struct ldb_message *result = NULL;
 684         struct ldb_dn *result_basedn = NULL;
 685         int i;
 686         char *p;
 687         struct ldb_dn *partitions_basedn = samdb_partitions_dn(sam_ctx, mem_ctx);
 688
 689         const char * const _domain_attrs_1779[] = { "ncName", "dnsRoot", NULL};
 690         const char * const _result_attrs_null[] = { NULL };
 691
 692         const char * const _domain_attrs_canonical[] = { "ncName", "dnsRoot", NULL};
 693         const char * const _result_attrs_canonical[] = { "canonicalName", NULL };
 694
 695         const char * const _domain_attrs_nt4[] = { "ncName", "dnsRoot", "nETBIOSName", NULL};
 696         const char * const _result_attrs_nt4[] = { "sAMAccountName", "objectSid", "objectClass", NULL};
 697
 698         const char * const _domain_attrs_guid[] = { "ncName", "dnsRoot", NULL};
 699         const char * const _result_attrs_guid[] = { "objectGUID", NULL};
 700
 701         const char * const _domain_attrs_display[] = { "ncName", "dnsRoot", NULL};
 702         const char * const _result_attrs_display[] = { "displayName", "samAccountName", NULL};
 703
 704         const char * const _domain_attrs_none[] = { "ncName", "dnsRoot" , NULL};
 705         const char * const _result_attrs_none[] = { NULL};
 706
 707         /* here we need to set the attrs lists for domain and result lookups */
 708         switch (format_desired) {
 709         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779:
 710         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 711                 domain_attrs = _domain_attrs_1779;
 712                 result_attrs = _result_attrs_null;
 713                 break;
 714         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 715                 domain_attrs = _domain_attrs_canonical;
 716                 result_attrs = _result_attrs_canonical;
 717                 break;
 718         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT:
 719                 domain_attrs = _domain_attrs_nt4;
 720                 result_attrs = _result_attrs_nt4;
 721                 break;
 722         case DRSUAPI_DS_NAME_FORMAT_GUID:
 723                 domain_attrs = _domain_attrs_guid;
 724                 result_attrs = _result_attrs_guid;
 725                 break;
 726         case DRSUAPI_DS_NAME_FORMAT_DISPLAY:
 727                 domain_attrs = _domain_attrs_display;
 728                 result_attrs = _result_attrs_display;
 729                 break;
 730         default:
 731                 domain_attrs = _domain_attrs_none;
 732                 result_attrs = _result_attrs_none;
 733                 break;
 734         }
 735
 736         if (domain_filter) {
 737                 /* if we have a domain_filter look it up and set the result_basedn and the dns_domain_name */
 738                 ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res,
 739                                              partitions_basedn,
 740                                              LDB_SCOPE_ONELEVEL,
 741                                              domain_attrs,
 742                                              "%s", domain_filter);
 743
 744                 if (ldb_ret != LDB_SUCCESS) {
 745                         DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s", ldb_errstring(sam_ctx)));
 746                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 747                         return WERR_OK;
 748                 }
 749
 750                 switch (domain_res->count) {
 751                 case 1:
 752                         break;
 753                 case 0:
 754                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 755                         return WERR_OK;
 756                 default:
 757                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 758                         return WERR_OK;
 759                 }
 760
 761                 info1->dns_domain_name  = samdb_result_string(domain_res->msgs[0], "dnsRoot", NULL);
 762                 W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
 763                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 764         } else {
 765                 info1->dns_domain_name  = NULL;
 766                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 767         }
 768
 769         if (result_filter) {
 770                 int ret;
 771                 struct ldb_result *res;
 772                 if (domain_res) {
 773                         result_basedn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
 774
 775                         ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &res,
 776                                                  result_basedn, LDB_SCOPE_SUBTREE,
 777                                                  result_attrs, "%s", result_filter);
 778                         if (ret != LDB_SUCCESS) {
 779                                 talloc_free(result_res);
 780                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 781                                 return WERR_OK;
 782                         }
 783                         ldb_ret = res->count;
 784                         result_res = res->msgs;
 785                 } else {
 786                         /* search with the 'phantom root' flag */
 787                         struct ldb_request *req;
 788
 789                         res = talloc_zero(mem_ctx, struct ldb_result);
 790                         W_ERROR_HAVE_NO_MEMORY(res);
 791
 792                         ret = ldb_build_search_req(&req, sam_ctx, mem_ctx,
 793                                                    ldb_get_root_basedn(sam_ctx),
 794                                                    LDB_SCOPE_SUBTREE,
 795                                                    result_filter,
 796                                                    result_attrs,
 797                                                    NULL,
 798                                                    res,
 799                                                    ldb_search_default_callback);
 800                         if (ret == LDB_SUCCESS) {
 801                                 struct ldb_search_options_control *search_options;
 802                                 search_options = talloc(req, struct ldb_search_options_control);
 803                                 W_ERROR_HAVE_NO_MEMORY(search_options);
 804                                 search_options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
 805
 806                                 ret = ldb_request_add_control(req, LDB_CONTROL_SEARCH_OPTIONS_OID, false, search_options);
 807                         }
 808                         if (ret != LDB_SUCCESS) {
 809                                 talloc_free(res);
 810                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 811                                 return WERR_OK;
 812                         }
 813
 814                         ldb_set_timeout(sam_ctx, req, 0); /* use default timeout */
 815
 816                         ret = ldb_request(sam_ctx, req);
 817
 818                         if (ret == LDB_SUCCESS) {
 819                                 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
 820                         }
 821
 822                         talloc_free(req);
 823
 824                         if (ret != LDB_SUCCESS) {
 825                                 DEBUG(2, ("DsCrackNameOneFilter phantom root search failed: %s",
 826                                           ldb_errstring(sam_ctx)));
 827                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 828                                 return WERR_OK;
 829                         }
 830                         ldb_ret = res->count;
 831                         result_res = res->msgs;
 832                 }
 833         } else if (format_offered == DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
 834                 ldb_ret = gendb_search_dn(sam_ctx, mem_ctx, name_dn, &result_res,
 835                                           result_attrs);
 836         } else if (domain_res) {
 837                 name_dn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
 838                 ldb_ret = gendb_search_dn(sam_ctx, mem_ctx, name_dn, &result_res,
 839                                           result_attrs);
 840         } else {
 841                 /* Can't happen */
 842                 DEBUG(0, ("LOGIC ERROR: DsCrackNameOneFilter domain ref search not availible: This can't happen..."));
 843                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 844                 return WERR_OK;
 845         }
 846
 847         switch (ldb_ret) {
 848         case 1:
 849                 result = result_res[0];
 850                 break;
 851         case 0:
 852                 switch (format_offered) {
 853                 case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL:
 854                         return DsCrackNameSPNAlias(sam_ctx, mem_ctx,
 855                                                    smb_krb5_context,
 856                                                    format_flags, format_offered, format_desired,
 857                                                    name, info1);
 858
 859                 case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL:
 860                         return DsCrackNameUPN(sam_ctx, mem_ctx, smb_krb5_context,
 861                                               format_flags, format_offered, format_desired,
 862                                               name, info1);
 863                 }
 864                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 865                 return WERR_OK;
 866         case -1:
 867                 DEBUG(2, ("DsCrackNameOneFilter result search failed: %s", ldb_errstring(sam_ctx)));
 868                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 869                 return WERR_OK;
 870         default:
 871                 switch (format_offered) {
 872                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 873                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 874                 {
 875                         const char *canonical_name = NULL; /* Not required, but we get warnings... */
 876                         /* We may need to manually filter further */
 877                         for (i = 0; i < ldb_ret; i++) {
 878                                 switch (format_offered) {
 879                                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 880                                         canonical_name = ldb_dn_canonical_string(mem_ctx, result_res[i]->dn);
 881                                         break;
 882                                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 883                                         canonical_name = ldb_dn_canonical_ex_string(mem_ctx, result_res[i]->dn);
 884                                         break;
 885                                 }
 886                                 if (strcasecmp_m(canonical_name, name) == 0) {
 887                                         result = result_res[i];
 888                                         break;
 889                                 }
 890                         }
 891                         if (!result) {
 892                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 893                                 return WERR_OK;
 894                         }
 895                 }
 896                 default:
 897                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 898                         return WERR_OK;
 899                 }
 900         }
 901
 902         info1->dns_domain_name = ldb_dn_canonical_string(mem_ctx, result->dn);
 903         W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
 904         p = strchr(info1->dns_domain_name, '/');
 905         if (p) {
 906                 p[0] = '\0';
 907         }
 908
 909         /* here we can use result and domain_res[0] */
 910         switch (format_desired) {
 911         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779: {
 912                 info1->result_name      = ldb_dn_alloc_linearized(mem_ctx, result->dn);
 913                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
 914
 915                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
 916                 return WERR_OK;
 917         }
 918         case DRSUAPI_DS_NAME_FORMAT_CANONICAL: {
 919                 info1->result_name      = samdb_result_string(result, "canonicalName", NULL);
 920                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
 921                 return WERR_OK;
 922         }
 923         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX: {
 924                 /* Not in the virtual ldb attribute */
 925                 return DsCrackNameOneSyntactical(mem_ctx,
 926                                                  DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
 927                                                  DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX,
 928                                                  result->dn, name, info1);
 929         }
 930         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
 931
 932                 const struct dom_sid *sid = samdb_result_dom_sid(mem_ctx, result, "objectSid");
 933                 const char *_acc = "", *_dom = "";
 934
 935                 if (samdb_find_attribute(sam_ctx, result, "objectClass", "domain")) {
 936
 937                         ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res,
 938                                                      partitions_basedn,
 939                                                      LDB_SCOPE_ONELEVEL,
 940                                                      domain_attrs,
 941                                                      "(ncName=%s)", ldb_dn_get_linearized(result->dn));
 942
 943                         if (ldb_ret != LDB_SUCCESS) {
 944                                 DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s", ldb_errstring(sam_ctx)));
 945                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 946                                 return WERR_OK;
 947                         }
 948
 949                         switch (domain_res->count) {
 950                         case 1:
 951                                 break;
 952                         case 0:
 953                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 954                                 return WERR_OK;
 955                         default:
 956                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 957                                 return WERR_OK;
 958                         }
 959                         _dom = samdb_result_string(domain_res->msgs[0], "nETBIOSName", NULL);
 960                         W_ERROR_HAVE_NO_MEMORY(_dom);
 961                 } else {
 962                         _acc = samdb_result_string(result, "sAMAccountName", NULL);
 963                         if (!_acc) {
 964                                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
 965                                 return WERR_OK;
 966                         }
 967                         if (dom_sid_in_domain(dom_sid_parse_talloc(mem_ctx, SID_BUILTIN), sid)) {
 968                                 _dom = "BUILTIN";
 969                         } else {
 970                                 const char *attrs[] = { NULL };
 971                                 struct ldb_result *domain_res2;
 972                                 struct dom_sid *dom_sid = dom_sid_dup(mem_ctx, sid);
 973                                 if (!dom_sid) {
 974                                         return WERR_OK;
 975                                 }
 976                                 dom_sid->num_auths--;
 977                                 ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res,
 978                                                              NULL,
 979                                                              LDB_SCOPE_BASE,
 980                                                              attrs,
 981                                                              "(&(objectSid=%s)(objectClass=domain))",
 982                                                              ldap_encode_ndr_dom_sid(mem_ctx, dom_sid));
 983
 984                                 if (ldb_ret != LDB_SUCCESS) {
 985                                         DEBUG(2, ("DsCrackNameOneFilter domain search failed: %s", ldb_errstring(sam_ctx)));
 986                                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 987                                         return WERR_OK;
 988                                 }
 989
 990                                 switch (domain_res->count) {
 991                                 case 1:
 992                                         break;
 993                                 case 0:
 994                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 995                                         return WERR_OK;
 996                                 default:
 997                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 998                                         return WERR_OK;
 999                                 }
1000
1001                                 ldb_ret = ldb_search_exp_fmt(sam_ctx, mem_ctx, &domain_res2,
1002                                                              partitions_basedn,
1003                                                              LDB_SCOPE_ONELEVEL,
1004                                                              domain_attrs,
1005                                                              "(ncName=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
1006
1007                                 if (ldb_ret != LDB_SUCCESS) {
1008                                         DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s", ldb_errstring(sam_ctx)));
1009                                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1010                                         return WERR_OK;
1011                                 }
1012
1013                                 switch (domain_res2->count) {
1014                                 case 1:
1015                                         break;
1016                                 case 0:
1017                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1018                                         return WERR_OK;
1019                                 default:
1020                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1021                                         return WERR_OK;
1022                                 }
1023                                 _dom = samdb_result_string(domain_res2->msgs[0], "nETBIOSName", NULL);
1024                                 W_ERROR_HAVE_NO_MEMORY(_dom);
1025                         }
1026                 }
1027
1028                 info1->result_name      = talloc_asprintf(mem_ctx, "%s\\%s", _dom, _acc);
1029                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1030
1031                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1032                 return WERR_OK;
1033         }
1034         case DRSUAPI_DS_NAME_FORMAT_GUID: {
1035                 struct GUID guid;
1036
1037                 guid = samdb_result_guid(result, "objectGUID");
1038
1039                 info1->result_name      = GUID_string2(mem_ctx, &guid);
1040                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1041
1042                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1043                 return WERR_OK;
1044         }
1045         case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
1046                 info1->result_name      = samdb_result_string(result, "displayName", NULL);
1047                 if (!info1->result_name) {
1048                         info1->result_name      = samdb_result_string(result, "sAMAccountName", NULL);
1049                 }
1050                 if (!info1->result_name) {
1051                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1052                 } else {
1053                         info1->status = DRSUAPI_DS_NAME_STATUS_OK;
1054                 }
1055                 return WERR_OK;
1056         }
1057         case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
1058                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1059                 return WERR_OK;
1060         }
1061         case DRSUAPI_DS_NAME_FORMAT_DNS_DOMAIN:
1062         case DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY: {
1063                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1064                 return WERR_OK;
1065         }
1066         default:
1067                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
1068                 return WERR_OK;
1069         }
1070 }
1071
1072 /* Given a user Principal Name (such as foo@bar.com),
1073  * return the user and domain DNs.  This is used in the KDC to then
1074  * return the Keys and evaluate policy */
1075
1076 NTSTATUS crack_user_principal_name(struct ldb_context *sam_ctx,
1077                                    TALLOC_CTX *mem_ctx,
1078                                    const char *user_principal_name,
1079                                    struct ldb_dn **user_dn,
1080                                    struct ldb_dn **domain_dn)
1081 {
1082         WERROR werr;
1083         struct drsuapi_DsNameInfo1 info1;
1084         werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1085                                   DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL,
1086                                   DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1087                                   user_principal_name,
1088                                   &info1);
1089         if (!W_ERROR_IS_OK(werr)) {
1090                 return werror_to_ntstatus(werr);
1091         }
1092         switch (info1.status) {
1093         case DRSUAPI_DS_NAME_STATUS_OK:
1094                 break;
1095         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1096         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1097         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1098                 return NT_STATUS_NO_SUCH_USER;
1099         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1100         default:
1101                 return NT_STATUS_UNSUCCESSFUL;
1102         }
1103
1104         *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1105
1106         if (domain_dn) {
1107                 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1108                                           DRSUAPI_DS_NAME_FORMAT_CANONICAL,
1109                                           DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1110                                           talloc_asprintf(mem_ctx, "%s/",
1111                                                           info1.dns_domain_name),
1112                                           &info1);
1113                 if (!W_ERROR_IS_OK(werr)) {
1114                         return werror_to_ntstatus(werr);
1115                 }
1116                 switch (info1.status) {
1117                 case DRSUAPI_DS_NAME_STATUS_OK:
1118                         break;
1119                 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1120                 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1121                 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1122                         return NT_STATUS_NO_SUCH_USER;
1123                 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1124                 default:
1125                         return NT_STATUS_UNSUCCESSFUL;
1126                 }
1127
1128                 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1129         }
1130
1131         return NT_STATUS_OK;
1132
1133 }
1134
1135 /* Given a Service Principal Name (such as host/foo.bar.com@BAR.COM),
1136  * return the user and domain DNs.  This is used in the KDC to then
1137  * return the Keys and evaluate policy */
1138
1139 NTSTATUS crack_service_principal_name(struct ldb_context *sam_ctx,
1140                                       TALLOC_CTX *mem_ctx,
1141                                       const char *service_principal_name,
1142                                       struct ldb_dn **user_dn,
1143                                       struct ldb_dn **domain_dn)
1144 {
1145         WERROR werr;
1146         struct drsuapi_DsNameInfo1 info1;
1147         werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1148                                   DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL,
1149                                   DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1150                                   service_principal_name,
1151                                   &info1);
1152         if (!W_ERROR_IS_OK(werr)) {
1153                 return werror_to_ntstatus(werr);
1154         }
1155         switch (info1.status) {
1156         case DRSUAPI_DS_NAME_STATUS_OK:
1157                 break;
1158         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1159         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1160         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1161                 return NT_STATUS_NO_SUCH_USER;
1162         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1163         default:
1164                 return NT_STATUS_UNSUCCESSFUL;
1165         }
1166
1167         *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1168
1169         if (domain_dn) {
1170                 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1171                                           DRSUAPI_DS_NAME_FORMAT_CANONICAL,
1172                                           DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1173                                           talloc_asprintf(mem_ctx, "%s/",
1174                                                           info1.dns_domain_name),
1175                                           &info1);
1176                 if (!W_ERROR_IS_OK(werr)) {
1177                         return werror_to_ntstatus(werr);
1178                 }
1179                 switch (info1.status) {
1180                 case DRSUAPI_DS_NAME_STATUS_OK:
1181                         break;
1182                 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1183                 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1184                 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1185                         return NT_STATUS_NO_SUCH_USER;
1186                 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1187                 default:
1188                         return NT_STATUS_UNSUCCESSFUL;
1189                 }
1190
1191                 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1192         }
1193
1194         return NT_STATUS_OK;
1195
1196 }
1197
1198 NTSTATUS crack_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1199                                 struct loadparm_context *lp_ctx,
1200                                 uint32_t format_offered,
1201                                 const char *name,
1202                                 const char **nt4_domain, const char **nt4_account)
1203 {
1204         WERROR werr;
1205         struct drsuapi_DsNameInfo1 info1;
1206         struct ldb_context *ldb;
1207         char *p;
1208
1209         /* Handle anonymous bind */
1210         if (!name || !*name) {
1211                 *nt4_domain = "";
1212                 *nt4_account = "";
1213                 return NT_STATUS_OK;
1214         }
1215
1216         ldb = samdb_connect(mem_ctx, lp_ctx, system_session(mem_ctx));
1217         if (ldb == NULL) {
1218                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
1219         }
1220
1221         werr = DsCrackNameOneName(ldb, mem_ctx, 0,
1222                                   format_offered,
1223                                   DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT,
1224                                   name,
1225                                   &info1);
1226         if (!W_ERROR_IS_OK(werr)) {
1227                 return werror_to_ntstatus(werr);
1228         }
1229         switch (info1.status) {
1230         case DRSUAPI_DS_NAME_STATUS_OK:
1231                 break;
1232         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1233         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1234         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1235                 return NT_STATUS_NO_SUCH_USER;
1236         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1237         default:
1238                 return NT_STATUS_UNSUCCESSFUL;
1239         }
1240
1241         *nt4_domain = talloc_strdup(mem_ctx, info1.result_name);
1242
1243         p = strchr(*nt4_domain, '\\');
1244         if (!p) {
1245                 return NT_STATUS_INVALID_PARAMETER;
1246         }
1247         p[0] = '\0';
1248
1249         if (p[1]) {
1250                 *nt4_account = talloc_strdup(mem_ctx, &p[1]);
1251         }
1252
1253         if (!*nt4_account || !*nt4_domain) {
1254                 return NT_STATUS_NO_MEMORY;
1255         }
1256
1257         return NT_STATUS_OK;
1258 }
1259
1260 NTSTATUS crack_auto_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1261                                      struct loadparm_context *lp_ctx,
1262                                      const char *name,
1263                                      const char **nt4_domain,
1264                                      const char **nt4_account)
1265 {
1266         uint32_t format_offered = DRSUAPI_DS_NAME_FORMAT_UKNOWN;
1267
1268         /* Handle anonymous bind */
1269         if (!name || !*name) {
1270                 *nt4_domain = "";
1271                 *nt4_account = "";
1272                 return NT_STATUS_OK;
1273         }
1274
1275         if (strchr_m(name, '=')) {
1276                 format_offered = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
1277         } else if (strchr_m(name, '@')) {
1278                 format_offered = DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL;
1279         } else if (strchr_m(name, '\\')) {
1280                 format_offered = DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT;
1281         } else if (strchr_m(name, '/')) {
1282                 format_offered = DRSUAPI_DS_NAME_FORMAT_CANONICAL;
1283         }
1284
1285         return crack_name_to_nt4_name(mem_ctx, lp_ctx, format_offered, name, nt4_domain, nt4_account);
1286 }