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 "lib/events/events.h"
  27 #include "rpc_server/common/common.h"
  28 #include <ldb.h>
  29 #include <ldb_errors.h>
  30 #include "auth/kerberos/kerberos.h"
  31 #include "libcli/ldap/ldap_ndr.h"
  32 #include "libcli/security/security.h"
  33 #include "auth/auth.h"
  34 #include "../lib/util/util_ldb.h"
  35 #include "dsdb/samdb/samdb.h"
  36 #include "dsdb/common/util.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, enum drsuapi_DsNameFormat format_offered,
  42                                    enum drsuapi_DsNameFormat format_desired,
  43                                    struct ldb_dn *name_dn, const char *name,
  44                                    const char *domain_filter, const char *result_filter,
  45                                    struct drsuapi_DsNameInfo1 *info1);
  46 static WERROR DsCrackNameOneSyntactical(TALLOC_CTX *mem_ctx,
  47                                         enum drsuapi_DsNameFormat format_offered,
  48                                         enum drsuapi_DsNameFormat format_desired,
  49                                         struct ldb_dn *name_dn, const char *name,
  50                                         struct drsuapi_DsNameInfo1 *info1);
  51
  52 static WERROR dns_domain_from_principal(TALLOC_CTX *mem_ctx, struct smb_krb5_context *smb_krb5_context,
  53                                         const char *name,
  54                                         struct drsuapi_DsNameInfo1 *info1)
  55 {
  56         krb5_error_code ret;
  57         krb5_principal principal;
  58         /* perhaps it's a principal with a realm, so return the right 'domain only' response */
  59         const char *realm;
  60         ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
  61                                     KRB5_PRINCIPAL_PARSE_REQUIRE_REALM, &principal);
  62         if (ret) {
  63                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
  64                 return WERR_OK;
  65         }
  66
  67         /* This isn't an allocation assignemnt, so it is free'ed with the krb5_free_principal */
  68         realm = smb_krb5_principal_get_realm(smb_krb5_context->krb5_context, principal);
  69
  70         info1->dns_domain_name  = talloc_strdup(mem_ctx, realm);
  71         krb5_free_principal(smb_krb5_context->krb5_context, principal);
  72
  73         W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
  74
  75         info1->status = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
  76         return WERR_OK;
  77 }
  78
  79 static enum drsuapi_DsNameStatus LDB_lookup_spn_alias(krb5_context context, struct ldb_context *ldb_ctx,
  80                                                       TALLOC_CTX *mem_ctx,
  81                                                       const char *alias_from,
  82                                                       char **alias_to)
  83 {
  84         unsigned int i;
  85         int ret;
  86         struct ldb_result *res;
  87         struct ldb_message_element *spnmappings;
  88         TALLOC_CTX *tmp_ctx;
  89         struct ldb_dn *service_dn;
  90         char *service_dn_str;
  91
  92         const char *directory_attrs[] = {
  93                 "sPNMappings",
  94                 NULL
  95         };
  96
  97         tmp_ctx = talloc_new(mem_ctx);
  98         if (!tmp_ctx) {
  99                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 100         }
 101
 102         service_dn = ldb_dn_new(tmp_ctx, ldb_ctx, "CN=Directory Service,CN=Windows NT,CN=Services");
 103         if ( ! ldb_dn_add_base(service_dn, ldb_get_config_basedn(ldb_ctx))) {
 104                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 105         }
 106         service_dn_str = ldb_dn_alloc_linearized(tmp_ctx, service_dn);
 107         if ( ! service_dn_str) {
 108                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 109         }
 110
 111         ret = ldb_search(ldb_ctx, tmp_ctx, &res, service_dn, LDB_SCOPE_BASE,
 112                          directory_attrs, "(objectClass=nTDSService)");
 113
 114         if (ret != LDB_SUCCESS && ret != LDB_ERR_NO_SUCH_OBJECT) {
 115                 DEBUG(1, ("ldb_search: dn: %s not found: %s\n", service_dn_str, ldb_errstring(ldb_ctx)));
 116                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 117         } else if (ret == LDB_ERR_NO_SUCH_OBJECT) {
 118                 DEBUG(1, ("ldb_search: dn: %s not found\n", service_dn_str));
 119                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 120         } else if (res->count != 1) {
 121                 talloc_free(res);
 122                 DEBUG(1, ("ldb_search: dn: %s not found\n", service_dn_str));
 123                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 124         }
 125
 126         spnmappings = ldb_msg_find_element(res->msgs[0], "sPNMappings");
 127         if (!spnmappings || spnmappings->num_values == 0) {
 128                 DEBUG(1, ("ldb_search: dn: %s no sPNMappings attribute\n", service_dn_str));
 129                 talloc_free(tmp_ctx);
 130                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 131         }
 132
 133         for (i = 0; i < spnmappings->num_values; i++) {
 134                 char *mapping, *p, *str;
 135                 mapping = talloc_strdup(tmp_ctx,
 136                                         (const char *)spnmappings->values[i].data);
 137                 if (!mapping) {
 138                         DEBUG(1, ("LDB_lookup_spn_alias: ldb_search: dn: %s did not have an sPNMapping\n", service_dn_str));
 139                         talloc_free(tmp_ctx);
 140                         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 141                 }
 142
 143                 /* C string manipulation sucks */
 144
 145                 p = strchr(mapping, '=');
 146                 if (!p) {
 147                         DEBUG(1, ("ldb_search: dn: %s sPNMapping malformed: %s\n",
 148                                   service_dn_str, mapping));
 149                         talloc_free(tmp_ctx);
 150                         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 151                 }
 152                 p[0] = '\0';
 153                 p++;
 154                 do {
 155                         str = p;
 156                         p = strchr(p, ',');
 157                         if (p) {
 158                                 p[0] = '\0';
 159                                 p++;
 160                         }
 161                         if (strcasecmp(str, alias_from) == 0) {
 162                                 *alias_to = mapping;
 163                                 talloc_steal(mem_ctx, mapping);
 164                                 talloc_free(tmp_ctx);
 165                                 return DRSUAPI_DS_NAME_STATUS_OK;
 166                         }
 167                 } while (p);
 168         }
 169         DEBUG(4, ("LDB_lookup_spn_alias: no alias for service %s applicable\n", alias_from));
 170         talloc_free(tmp_ctx);
 171         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 172 }
 173
 174 /* When cracking a ServicePrincipalName, many services may be served
 175  * by the host/ servicePrincipalName.  The incoming query is for cifs/
 176  * but we translate it here, and search on host/.  This is done after
 177  * the cifs/ entry has been searched for, making this a fallback */
 178
 179 static WERROR DsCrackNameSPNAlias(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 180                                   struct smb_krb5_context *smb_krb5_context,
 181                                   uint32_t format_flags, enum drsuapi_DsNameFormat format_offered,
 182                                   enum drsuapi_DsNameFormat format_desired,
 183                                   const char *name, struct drsuapi_DsNameInfo1 *info1)
 184 {
 185         WERROR wret;
 186         krb5_error_code ret;
 187         krb5_principal principal;
 188         krb5_data *component;
 189         const char *service, *dns_name;
 190         char *new_service;
 191         char *new_princ;
 192         enum drsuapi_DsNameStatus namestatus;
 193
 194         /* parse principal */
 195         ret = krb5_parse_name_flags(smb_krb5_context->krb5_context,
 196                                     name, KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
 197         if (ret) {
 198                 DEBUG(2, ("Could not parse principal: %s: %s\n",
 199                           name, smb_get_krb5_error_message(smb_krb5_context->krb5_context,
 200                                                            ret, mem_ctx)));
 201                 return WERR_NOMEM;
 202         }
 203
 204         /* grab cifs/, http/ etc */
 205
 206         /* This is checked for in callers, but be safe */
 207         if (krb5_princ_size(smb_krb5_context->krb5_context, principal) < 2) {
 208                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 209                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 210                 return WERR_OK;
 211         }
 212         component = krb5_princ_component(smb_krb5_context->krb5_context,
 213                                          principal, 0);
 214         service = (const char *)component->data;
 215         component = krb5_princ_component(smb_krb5_context->krb5_context,
 216                                          principal, 1);
 217         dns_name = (const char *)component->data;
 218
 219         /* MAP it */
 220         namestatus = LDB_lookup_spn_alias(smb_krb5_context->krb5_context,
 221                                           sam_ctx, mem_ctx,
 222                                           service, &new_service);
 223
 224         if (namestatus == DRSUAPI_DS_NAME_STATUS_NOT_FOUND) {
 225                 wret = WERR_OK;
 226                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 227                 info1->dns_domain_name  = talloc_strdup(mem_ctx, dns_name);
 228                 if (!info1->dns_domain_name) {
 229                         wret = WERR_NOMEM;
 230                 }
 231                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 232                 return wret;
 233         } else if (namestatus != DRSUAPI_DS_NAME_STATUS_OK) {
 234                 info1->status = namestatus;
 235                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 236                 return WERR_OK;
 237         }
 238
 239         /* reform principal */
 240         new_princ = talloc_asprintf(mem_ctx, "%s/%s", new_service, dns_name);
 241         if (!new_princ) {
 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         talloc_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, enum drsuapi_DsNameFormat format_offered,
 265                              enum drsuapi_DsNameFormat 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         const 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_REQUIRE_REALM, &principal);
 287         if (ret) {
 288                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 289                 return WERR_OK;
 290         }
 291
 292         realm = smb_krb5_principal_get_realm(smb_krb5_context->krb5_context,
 293                                              principal);
 294
 295         ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
 296                              samdb_partitions_dn(sam_ctx, mem_ctx),
 297                              LDB_SCOPE_ONELEVEL,
 298                              domain_attrs,
 299                              "(&(objectClass=crossRef)(|(dnsRoot=%s)(netbiosName=%s))(systemFlags:%s:=%u))",
 300                              ldb_binary_encode_string(mem_ctx, realm),
 301                              ldb_binary_encode_string(mem_ctx, realm),
 302                              LDB_OID_COMPARATOR_AND,
 303                              SYSTEM_FLAG_CR_NTDS_DOMAIN);
 304
 305         if (ldb_ret != LDB_SUCCESS) {
 306                 DEBUG(2, ("DsCrackNameUPN domain ref search failed: %s\n", ldb_errstring(sam_ctx)));
 307                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 308                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 309                 return WERR_OK;
 310         }
 311
 312         switch (domain_res->count) {
 313         case 1:
 314                 break;
 315         case 0:
 316                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 317                 return dns_domain_from_principal(mem_ctx, smb_krb5_context,
 318                                                  name, info1);
 319         default:
 320                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 321                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 322                 return WERR_OK;
 323         }
 324
 325         ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 326                                       KRB5_PRINCIPAL_UNPARSE_NO_REALM, &unparsed_name_short);
 327         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 328
 329         if (ret) {
 330                 free(unparsed_name_short);
 331                 return WERR_NOMEM;
 332         }
 333
 334         /* This may need to be extended for more userPrincipalName variations */
 335         result_filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
 336                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short));
 337
 338         domain_filter = talloc_asprintf(mem_ctx, "(distinguishedName=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
 339
 340         if (!result_filter || !domain_filter) {
 341                 free(unparsed_name_short);
 342                 return WERR_NOMEM;
 343         }
 344         status = DsCrackNameOneFilter(sam_ctx, mem_ctx,
 345                                       smb_krb5_context,
 346                                       format_flags, format_offered, format_desired,
 347                                       NULL, unparsed_name_short, domain_filter, result_filter,
 348                                       info1);
 349         free(unparsed_name_short);
 350
 351         return status;
 352 }
 353
 354 /* Crack a single 'name', from format_offered into format_desired, returning the result in info1 */
 355
 356 WERROR DsCrackNameOneName(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 357                           uint32_t format_flags, enum drsuapi_DsNameFormat format_offered,
 358                           enum drsuapi_DsNameFormat format_desired,
 359                           const char *name, struct drsuapi_DsNameInfo1 *info1)
 360 {
 361         krb5_error_code ret;
 362         const char *domain_filter = NULL;
 363         const char *result_filter = NULL;
 364         struct ldb_dn *name_dn = NULL;
 365
 366         struct smb_krb5_context *smb_krb5_context = NULL;
 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_UNKNOWN:
 383         {
 384                 unsigned int i;
 385                 enum drsuapi_DsNameFormat formats[] = {
 386                         DRSUAPI_DS_NAME_FORMAT_FQDN_1779, DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL,
 387                         DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT, DRSUAPI_DS_NAME_FORMAT_CANONICAL,
 388                         DRSUAPI_DS_NAME_FORMAT_GUID, DRSUAPI_DS_NAME_FORMAT_DISPLAY,
 389                         DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL,
 390                         DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY,
 391                         DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX
 392                 };
 393                 WERROR werr;
 394                 for (i=0; i < ARRAY_SIZE(formats); i++) {
 395                         werr = DsCrackNameOneName(sam_ctx, mem_ctx, format_flags, formats[i], format_desired, name, info1);
 396                         if (!W_ERROR_IS_OK(werr)) {
 397                                 return werr;
 398                         }
 399                         if (info1->status != DRSUAPI_DS_NAME_STATUS_NOT_FOUND) {
 400                                 return werr;
 401                         }
 402                 }
 403                 return werr;
 404         }
 405
 406         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 407         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 408         {
 409                 char *str, *s, *account;
 410
 411                 if (strlen(name) == 0) {
 412                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 413                         return WERR_OK;
 414                 }
 415
 416                 str = talloc_strdup(mem_ctx, name);
 417                 W_ERROR_HAVE_NO_MEMORY(str);
 418
 419                 if (format_offered == DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX) {
 420                         /* Look backwards for the \n, and replace it with / */
 421                         s = strrchr(str, '\n');
 422                         if (!s) {
 423                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 424                                 return WERR_OK;
 425                         }
 426                         s[0] = '/';
 427                 }
 428
 429                 s = strchr(str, '/');
 430                 if (!s) {
 431                         /* there must be at least one / */
 432                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 433                         return WERR_OK;
 434                 }
 435
 436                 s[0] = '\0';
 437                 s++;
 438
 439                 domain_filter = talloc_asprintf(mem_ctx, "(&(objectClass=crossRef)(dnsRoot=%s)(systemFlags:%s:=%u))",
 440                                                 ldb_binary_encode_string(mem_ctx, str),
 441                                                 LDB_OID_COMPARATOR_AND,
 442                                                 SYSTEM_FLAG_CR_NTDS_DOMAIN);
 443                 W_ERROR_HAVE_NO_MEMORY(domain_filter);
 444
 445                 /* There may not be anything after the domain component (search for the domain itself) */
 446                 if (s[0]) {
 447
 448                         account = strrchr(s, '/');
 449                         if (!account) {
 450                                 account = s;
 451                         } else {
 452                                 account++;
 453                         }
 454                         account = ldb_binary_encode_string(mem_ctx, account);
 455                         W_ERROR_HAVE_NO_MEMORY(account);
 456                         result_filter = talloc_asprintf(mem_ctx, "(name=%s)",
 457                                                         account);
 458                         W_ERROR_HAVE_NO_MEMORY(result_filter);
 459                 }
 460                 break;
 461         }
 462         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
 463                 char *p;
 464                 char *domain;
 465                 const char *account = NULL;
 466
 467                 domain = talloc_strdup(mem_ctx, name);
 468                 W_ERROR_HAVE_NO_MEMORY(domain);
 469
 470                 p = strchr(domain, '\\');
 471                 if (!p) {
 472                         /* invalid input format */
 473                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 474                         return WERR_OK;
 475                 }
 476                 p[0] = '\0';
 477
 478                 if (p[1]) {
 479                         account = &p[1];
 480                 }
 481
 482                 domain_filter = talloc_asprintf(mem_ctx,
 483                                                 "(&(objectClass=crossRef)(|(dnsRoot=%s)(netbiosName=%s))(systemFlags:%s:=%u))",
 484                                                 ldb_binary_encode_string(mem_ctx, domain),
 485                                                 ldb_binary_encode_string(mem_ctx, domain),
 486                                                 LDB_OID_COMPARATOR_AND,
 487                                                 SYSTEM_FLAG_CR_NTDS_DOMAIN);
 488                 W_ERROR_HAVE_NO_MEMORY(domain_filter);
 489                 if (account) {
 490                         result_filter = talloc_asprintf(mem_ctx, "(sAMAccountName=%s)",
 491                                                         ldb_binary_encode_string(mem_ctx, account));
 492                         W_ERROR_HAVE_NO_MEMORY(result_filter);
 493                 }
 494
 495                 talloc_free(domain);
 496                 break;
 497         }
 498
 499                 /* A LDAP DN as a string */
 500         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779: {
 501                 domain_filter = NULL;
 502                 name_dn = ldb_dn_new(mem_ctx, sam_ctx, name);
 503                 if (! ldb_dn_validate(name_dn)) {
 504                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 505                         return WERR_OK;
 506                 }
 507                 break;
 508         }
 509
 510                 /* A GUID as a string */
 511         case DRSUAPI_DS_NAME_FORMAT_GUID: {
 512                 struct GUID guid;
 513                 char *ldap_guid;
 514                 NTSTATUS nt_status;
 515                 domain_filter = NULL;
 516
 517                 nt_status = GUID_from_string(name, &guid);
 518                 if (!NT_STATUS_IS_OK(nt_status)) {
 519                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 520                         return WERR_OK;
 521                 }
 522
 523                 ldap_guid = ldap_encode_ndr_GUID(mem_ctx, &guid);
 524                 if (!ldap_guid) {
 525                         return WERR_NOMEM;
 526                 }
 527                 result_filter = talloc_asprintf(mem_ctx, "(objectGUID=%s)",
 528                                                 ldap_guid);
 529                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 530                 break;
 531         }
 532         case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
 533                 domain_filter = NULL;
 534
 535                 result_filter = talloc_asprintf(mem_ctx, "(|(displayName=%s)(samAccountName=%s))",
 536                                                 ldb_binary_encode_string(mem_ctx, name),
 537                                                 ldb_binary_encode_string(mem_ctx, name));
 538                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 539                 break;
 540         }
 541
 542                 /* A S-1234-5678 style string */
 543         case DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY: {
 544                 struct dom_sid *sid = dom_sid_parse_talloc(mem_ctx, name);
 545                 char *ldap_sid;
 546
 547                 domain_filter = NULL;
 548                 if (!sid) {
 549                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 550                         return WERR_OK;
 551                 }
 552                 ldap_sid = ldap_encode_ndr_dom_sid(mem_ctx,
 553                                                    sid);
 554                 if (!ldap_sid) {
 555                         return WERR_NOMEM;
 556                 }
 557                 result_filter = talloc_asprintf(mem_ctx, "(objectSid=%s)",
 558                                                 ldap_sid);
 559                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 560                 break;
 561         }
 562         case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL: {
 563                 krb5_principal principal;
 564                 char *unparsed_name;
 565
 566                 ret = smb_krb5_init_context(mem_ctx,
 567                                             ldb_get_event_context(sam_ctx),
 568                                             (struct loadparm_context *)ldb_get_opaque(sam_ctx, "loadparm"),
 569                                             &smb_krb5_context);
 570
 571                 if (ret) {
 572                         return WERR_NOMEM;
 573                 }
 574
 575                 /* Ensure we reject compleate junk first */
 576                 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
 577                 if (ret) {
 578                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 579                         return WERR_OK;
 580                 }
 581
 582                 domain_filter = NULL;
 583
 584                 /* By getting the unparsed name here, we ensure the escaping is correct (and trust the client less) */
 585                 ret = krb5_unparse_name(smb_krb5_context->krb5_context, principal, &unparsed_name);
 586                 if (ret) {
 587                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 588                         return WERR_NOMEM;
 589                 }
 590
 591                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 592
 593                 /* The ldb_binary_encode_string() here avoid LDAP filter injection attacks */
 594                 result_filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(userPrincipalName=%s))",
 595                                                 ldb_binary_encode_string(mem_ctx, unparsed_name));
 596
 597                 free(unparsed_name);
 598                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 599                 break;
 600         }
 601         case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
 602                 krb5_principal principal;
 603                 char *unparsed_name_short;
 604                 krb5_data *component;
 605                 char *service;
 606
 607                 ret = smb_krb5_init_context(mem_ctx,
 608                                             ldb_get_event_context(sam_ctx),
 609                                             (struct loadparm_context *)ldb_get_opaque(sam_ctx, "loadparm"),
 610                                             &smb_krb5_context);
 611
 612                 if (ret) {
 613                         return WERR_NOMEM;
 614                 }
 615
 616                 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
 617                 if (ret == 0 &&
 618                     krb5_princ_size(smb_krb5_context->krb5_context,
 619                                                         principal) < 2) {
 620                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 621                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 622                         return WERR_OK;
 623                 } else if (ret == 0) {
 624                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 625                 }
 626                 ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
 627                                             KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
 628                 if (ret) {
 629                         return dns_domain_from_principal(mem_ctx, smb_krb5_context,
 630                                                          name, info1);
 631                 }
 632
 633                 domain_filter = NULL;
 634
 635                 ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 636                                               KRB5_PRINCIPAL_UNPARSE_NO_REALM, &unparsed_name_short);
 637                 if (ret) {
 638                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 639                         return WERR_NOMEM;
 640                 }
 641
 642                 component = krb5_princ_component(smb_krb5_context->krb5_context,
 643                                                  principal, 0);
 644                 service = (char *)component->data;
 645                 if ((krb5_princ_size(smb_krb5_context->krb5_context,
 646                                                         principal) == 2) &&
 647                         (strcasecmp(service, "host") == 0)) {
 648                         /* the 'cn' attribute is just the leading part of the name */
 649                         char *computer_name;
 650                         component = krb5_princ_component(
 651                                                 smb_krb5_context->krb5_context,
 652                                                 principal, 1);
 653                         computer_name = talloc_strndup(mem_ctx, (char *)component->data,
 654                                                         strcspn((char *)component->data, "."));
 655                         if (computer_name == NULL) {
 656                                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 657                                 free(unparsed_name_short);
 658                                 return WERR_NOMEM;
 659                         }
 660
 661                         result_filter = talloc_asprintf(mem_ctx, "(|(&(servicePrincipalName=%s)(objectClass=user))(&(cn=%s)(objectClass=computer)))",
 662                                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short),
 663                                                         ldb_binary_encode_string(mem_ctx, computer_name));
 664                 } else {
 665                         result_filter = talloc_asprintf(mem_ctx, "(&(servicePrincipalName=%s)(objectClass=user))",
 666                                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short));
 667                 }
 668                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 669                 free(unparsed_name_short);
 670                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 671
 672                 break;
 673         }
 674         default: {
 675                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 676                 return WERR_OK;
 677         }
 678         }
 679
 680         if (format_flags & DRSUAPI_DS_NAME_FLAG_SYNTACTICAL_ONLY) {
 681                 return DsCrackNameOneSyntactical(mem_ctx, format_offered, format_desired,
 682                                                  name_dn, name, info1);
 683         }
 684
 685         return DsCrackNameOneFilter(sam_ctx, mem_ctx,
 686                                     smb_krb5_context,
 687                                     format_flags, format_offered, format_desired,
 688                                     name_dn, name,
 689                                     domain_filter, result_filter,
 690                                     info1);
 691 }
 692
 693 /* Subcase of CrackNames.  It is possible to translate a LDAP-style DN
 694  * (FQDN_1779) into a canoical name without actually searching the
 695  * database */
 696
 697 static WERROR DsCrackNameOneSyntactical(TALLOC_CTX *mem_ctx,
 698                                         enum drsuapi_DsNameFormat format_offered,
 699                                         enum drsuapi_DsNameFormat format_desired,
 700                                         struct ldb_dn *name_dn, const char *name,
 701                                         struct drsuapi_DsNameInfo1 *info1)
 702 {
 703         char *cracked;
 704         if (format_offered != DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
 705                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
 706                 return WERR_OK;
 707         }
 708
 709         switch (format_desired) {
 710         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 711                 cracked = ldb_dn_canonical_string(mem_ctx, name_dn);
 712                 break;
 713         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 714                 cracked = ldb_dn_canonical_ex_string(mem_ctx, name_dn);
 715                 break;
 716         default:
 717                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
 718                 return WERR_OK;
 719         }
 720         info1->status = DRSUAPI_DS_NAME_STATUS_OK;
 721         info1->result_name      = cracked;
 722         if (!cracked) {
 723                 return WERR_NOMEM;
 724         }
 725
 726         return WERR_OK;
 727 }
 728
 729 /* Given a filter for the domain, and one for the result, perform the
 730  * ldb search. The format offered and desired flags change the
 731  * behaviours, including what attributes to return.
 732  *
 733  * The smb_krb5_context is required because we use the krb5 libs for principal parsing
 734  */
 735
 736 static WERROR DsCrackNameOneFilter(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 737                                    struct smb_krb5_context *smb_krb5_context,
 738                                    uint32_t format_flags, enum drsuapi_DsNameFormat format_offered,
 739                                    enum drsuapi_DsNameFormat format_desired,
 740                                    struct ldb_dn *name_dn, const char *name,
 741                                    const char *domain_filter, const char *result_filter,
 742                                    struct drsuapi_DsNameInfo1 *info1)
 743 {
 744         int ldb_ret;
 745         struct ldb_result *domain_res = NULL;
 746         const char * const *domain_attrs;
 747         const char * const *result_attrs;
 748         struct ldb_message **result_res = NULL;
 749         struct ldb_message *result = NULL;
 750         int i;
 751         char *p;
 752         struct ldb_dn *partitions_basedn = samdb_partitions_dn(sam_ctx, mem_ctx);
 753
 754         const char * const _domain_attrs_1779[] = { "ncName", "dnsRoot", NULL};
 755         const char * const _result_attrs_null[] = { NULL };
 756
 757         const char * const _domain_attrs_canonical[] = { "ncName", "dnsRoot", NULL};
 758         const char * const _result_attrs_canonical[] = { "canonicalName", NULL };
 759
 760         const char * const _domain_attrs_nt4[] = { "ncName", "dnsRoot", "nETBIOSName", NULL};
 761         const char * const _result_attrs_nt4[] = { "sAMAccountName", "objectSid", "objectClass", NULL};
 762
 763         const char * const _domain_attrs_guid[] = { "ncName", "dnsRoot", NULL};
 764         const char * const _result_attrs_guid[] = { "objectGUID", NULL};
 765
 766         const char * const _domain_attrs_display[] = { "ncName", "dnsRoot", NULL};
 767         const char * const _result_attrs_display[] = { "displayName", "samAccountName", NULL};
 768
 769         const char * const _domain_attrs_none[] = { "ncName", "dnsRoot" , NULL};
 770         const char * const _result_attrs_none[] = { NULL};
 771
 772         /* here we need to set the attrs lists for domain and result lookups */
 773         switch (format_desired) {
 774         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779:
 775         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 776                 domain_attrs = _domain_attrs_1779;
 777                 result_attrs = _result_attrs_null;
 778                 break;
 779         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 780                 domain_attrs = _domain_attrs_canonical;
 781                 result_attrs = _result_attrs_canonical;
 782                 break;
 783         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT:
 784                 domain_attrs = _domain_attrs_nt4;
 785                 result_attrs = _result_attrs_nt4;
 786                 break;
 787         case DRSUAPI_DS_NAME_FORMAT_GUID:
 788                 domain_attrs = _domain_attrs_guid;
 789                 result_attrs = _result_attrs_guid;
 790                 break;
 791         case DRSUAPI_DS_NAME_FORMAT_DISPLAY:
 792                 domain_attrs = _domain_attrs_display;
 793                 result_attrs = _result_attrs_display;
 794                 break;
 795         default:
 796                 domain_attrs = _domain_attrs_none;
 797                 result_attrs = _result_attrs_none;
 798                 break;
 799         }
 800
 801         if (domain_filter) {
 802                 /* if we have a domain_filter look it up and set the result_basedn and the dns_domain_name */
 803                 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
 804                                              partitions_basedn,
 805                                              LDB_SCOPE_ONELEVEL,
 806                                              domain_attrs,
 807                                              "%s", domain_filter);
 808
 809                 if (ldb_ret != LDB_SUCCESS) {
 810                         DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s\n", ldb_errstring(sam_ctx)));
 811                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 812                         return WERR_OK;
 813                 }
 814
 815                 switch (domain_res->count) {
 816                 case 1:
 817                         break;
 818                 case 0:
 819                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 820                         return WERR_OK;
 821                 default:
 822                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 823                         return WERR_OK;
 824                 }
 825
 826                 info1->dns_domain_name  = ldb_msg_find_attr_as_string(domain_res->msgs[0], "dnsRoot", NULL);
 827                 W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
 828                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 829         } else {
 830                 info1->dns_domain_name  = NULL;
 831                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 832         }
 833
 834         if (result_filter) {
 835                 int ret;
 836                 struct ldb_result *res;
 837                 uint32_t dsdb_flags = 0;
 838                 struct ldb_dn *search_dn;
 839
 840                 if (domain_res) {
 841                         dsdb_flags = 0;
 842                         search_dn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
 843                 } else {
 844                         dsdb_flags = DSDB_SEARCH_SEARCH_ALL_PARTITIONS;
 845                         search_dn = NULL;
 846                 }
 847                 if (format_desired == DRSUAPI_DS_NAME_FORMAT_GUID){
 848                          dsdb_flags = dsdb_flags| DSDB_SEARCH_SHOW_DELETED;
 849                 }
 850
 851                 /* search with the 'phantom root' flag */
 852                 ret = dsdb_search(sam_ctx, mem_ctx, &res,
 853                                   search_dn,
 854                                   LDB_SCOPE_SUBTREE,
 855                                   result_attrs,
 856                                   dsdb_flags,
 857                                   "%s", result_filter);
 858                 if (ret != LDB_SUCCESS) {
 859                         DEBUG(2, ("DsCrackNameOneFilter phantom root search failed: %s\n",
 860                                   ldb_errstring(sam_ctx)));
 861                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 862                         return WERR_OK;
 863                 }
 864
 865                 ldb_ret = res->count;
 866                 result_res = res->msgs;
 867         } else if (format_offered == DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
 868                 ldb_ret = gendb_search_dn(sam_ctx, mem_ctx, name_dn, &result_res,
 869                                           result_attrs);
 870         } else if (domain_res) {
 871                 name_dn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
 872                 ldb_ret = gendb_search_dn(sam_ctx, mem_ctx, name_dn, &result_res,
 873                                           result_attrs);
 874         } else {
 875                 /* Can't happen */
 876                 DEBUG(0, ("LOGIC ERROR: DsCrackNameOneFilter domain ref search not available: This can't happen...\n"));
 877                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 878                 return WERR_OK;
 879         }
 880
 881         switch (ldb_ret) {
 882         case 1:
 883                 result = result_res[0];
 884                 break;
 885         case 0:
 886                 switch (format_offered) {
 887                 case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL:
 888                         return DsCrackNameSPNAlias(sam_ctx, mem_ctx,
 889                                                    smb_krb5_context,
 890                                                    format_flags, format_offered, format_desired,
 891                                                    name, info1);
 892
 893                 case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL:
 894                         return DsCrackNameUPN(sam_ctx, mem_ctx, smb_krb5_context,
 895                                               format_flags, format_offered, format_desired,
 896                                               name, info1);
 897                 default:
 898                         break;
 899                 }
 900                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 901                 return WERR_OK;
 902         case -1:
 903                 DEBUG(2, ("DsCrackNameOneFilter result search failed: %s\n", ldb_errstring(sam_ctx)));
 904                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 905                 return WERR_OK;
 906         default:
 907                 switch (format_offered) {
 908                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 909                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 910                 {
 911                         const char *canonical_name = NULL; /* Not required, but we get warnings... */
 912                         /* We may need to manually filter further */
 913                         for (i = 0; i < ldb_ret; i++) {
 914                                 switch (format_offered) {
 915                                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 916                                         canonical_name = ldb_dn_canonical_string(mem_ctx, result_res[i]->dn);
 917                                         break;
 918                                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 919                                         canonical_name = ldb_dn_canonical_ex_string(mem_ctx, result_res[i]->dn);
 920                                         break;
 921                                 default:
 922                                         break;
 923                                 }
 924                                 if (strcasecmp_m(canonical_name, name) == 0) {
 925                                         result = result_res[i];
 926                                         break;
 927                                 }
 928                         }
 929                         if (!result) {
 930                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 931                                 return WERR_OK;
 932                         }
 933                 }
 934                 default:
 935                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 936                         return WERR_OK;
 937                 }
 938         }
 939
 940         info1->dns_domain_name = ldb_dn_canonical_string(mem_ctx, result->dn);
 941         W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
 942         p = strchr(info1->dns_domain_name, '/');
 943         if (p) {
 944                 p[0] = '\0';
 945         }
 946
 947         /* here we can use result and domain_res[0] */
 948         switch (format_desired) {
 949         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779: {
 950                 info1->result_name      = ldb_dn_alloc_linearized(mem_ctx, result->dn);
 951                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
 952
 953                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
 954                 return WERR_OK;
 955         }
 956         case DRSUAPI_DS_NAME_FORMAT_CANONICAL: {
 957                 info1->result_name      = ldb_msg_find_attr_as_string(result, "canonicalName", NULL);
 958                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
 959                 return WERR_OK;
 960         }
 961         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX: {
 962                 /* Not in the virtual ldb attribute */
 963                 return DsCrackNameOneSyntactical(mem_ctx,
 964                                                  DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
 965                                                  DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX,
 966                                                  result->dn, name, info1);
 967         }
 968         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
 969
 970                 const struct dom_sid *sid = samdb_result_dom_sid(mem_ctx, result, "objectSid");
 971                 const char *_acc = "", *_dom = "";
 972
 973                 if (samdb_find_attribute(sam_ctx, result, "objectClass", "domain")) {
 974
 975                         ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
 976                                                      partitions_basedn,
 977                                                      LDB_SCOPE_ONELEVEL,
 978                                                      domain_attrs,
 979                                                      "(ncName=%s)", ldb_dn_get_linearized(result->dn));
 980
 981                         if (ldb_ret != LDB_SUCCESS) {
 982                                 DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s\n", ldb_errstring(sam_ctx)));
 983                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 984                                 return WERR_OK;
 985                         }
 986
 987                         switch (domain_res->count) {
 988                         case 1:
 989                                 break;
 990                         case 0:
 991                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 992                                 return WERR_OK;
 993                         default:
 994                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 995                                 return WERR_OK;
 996                         }
 997                         _dom = ldb_msg_find_attr_as_string(domain_res->msgs[0], "nETBIOSName", NULL);
 998                         W_ERROR_HAVE_NO_MEMORY(_dom);
 999                 } else {
1000                         _acc = ldb_msg_find_attr_as_string(result, "sAMAccountName", NULL);
1001                         if (!_acc) {
1002                                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
1003                                 return WERR_OK;
1004                         }
1005                         if (dom_sid_in_domain(dom_sid_parse_talloc(mem_ctx, SID_BUILTIN), sid)) {
1006                                 _dom = "BUILTIN";
1007                         } else {
1008                                 const char *attrs[] = { NULL };
1009                                 struct ldb_result *domain_res2;
1010                                 struct dom_sid *dom_sid = dom_sid_dup(mem_ctx, sid);
1011                                 if (!dom_sid) {
1012                                         return WERR_OK;
1013                                 }
1014                                 dom_sid->num_auths--;
1015                                 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
1016                                                              NULL,
1017                                                              LDB_SCOPE_BASE,
1018                                                              attrs,
1019                                                              "(&(objectSid=%s)(objectClass=domain))",
1020                                                              ldap_encode_ndr_dom_sid(mem_ctx, dom_sid));
1021
1022                                 if (ldb_ret != LDB_SUCCESS) {
1023                                         DEBUG(2, ("DsCrackNameOneFilter domain search failed: %s\n", ldb_errstring(sam_ctx)));
1024                                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1025                                         return WERR_OK;
1026                                 }
1027
1028                                 switch (domain_res->count) {
1029                                 case 1:
1030                                         break;
1031                                 case 0:
1032                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1033                                         return WERR_OK;
1034                                 default:
1035                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1036                                         return WERR_OK;
1037                                 }
1038
1039                                 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res2,
1040                                                              partitions_basedn,
1041                                                              LDB_SCOPE_ONELEVEL,
1042                                                              domain_attrs,
1043                                                              "(ncName=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
1044
1045                                 if (ldb_ret != LDB_SUCCESS) {
1046                                         DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s\n", ldb_errstring(sam_ctx)));
1047                                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1048                                         return WERR_OK;
1049                                 }
1050
1051                                 switch (domain_res2->count) {
1052                                 case 1:
1053                                         break;
1054                                 case 0:
1055                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1056                                         return WERR_OK;
1057                                 default:
1058                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1059                                         return WERR_OK;
1060                                 }
1061                                 _dom = ldb_msg_find_attr_as_string(domain_res2->msgs[0], "nETBIOSName", NULL);
1062                                 W_ERROR_HAVE_NO_MEMORY(_dom);
1063                         }
1064                 }
1065
1066                 info1->result_name      = talloc_asprintf(mem_ctx, "%s\\%s", _dom, _acc);
1067                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1068
1069                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1070                 return WERR_OK;
1071         }
1072         case DRSUAPI_DS_NAME_FORMAT_GUID: {
1073                 struct GUID guid;
1074
1075                 guid = samdb_result_guid(result, "objectGUID");
1076
1077                 info1->result_name      = GUID_string2(mem_ctx, &guid);
1078                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1079
1080                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1081                 return WERR_OK;
1082         }
1083         case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
1084                 info1->result_name      = ldb_msg_find_attr_as_string(result, "displayName", NULL);
1085                 if (!info1->result_name) {
1086                         info1->result_name      = ldb_msg_find_attr_as_string(result, "sAMAccountName", NULL);
1087                 }
1088                 if (!info1->result_name) {
1089                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1090                 } else {
1091                         info1->status = DRSUAPI_DS_NAME_STATUS_OK;
1092                 }
1093                 return WERR_OK;
1094         }
1095         case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
1096                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1097                 return WERR_OK;
1098         }
1099         case DRSUAPI_DS_NAME_FORMAT_DNS_DOMAIN:
1100         case DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY: {
1101                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1102                 return WERR_OK;
1103         }
1104         default:
1105                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
1106                 return WERR_OK;
1107         }
1108 }
1109
1110 /* Given a user Principal Name (such as foo@bar.com),
1111  * return the user and domain DNs.  This is used in the KDC to then
1112  * return the Keys and evaluate policy */
1113
1114 NTSTATUS crack_user_principal_name(struct ldb_context *sam_ctx,
1115                                    TALLOC_CTX *mem_ctx,
1116                                    const char *user_principal_name,
1117                                    struct ldb_dn **user_dn,
1118                                    struct ldb_dn **domain_dn)
1119 {
1120         WERROR werr;
1121         struct drsuapi_DsNameInfo1 info1;
1122         werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1123                                   DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL,
1124                                   DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1125                                   user_principal_name,
1126                                   &info1);
1127         if (!W_ERROR_IS_OK(werr)) {
1128                 return werror_to_ntstatus(werr);
1129         }
1130         switch (info1.status) {
1131         case DRSUAPI_DS_NAME_STATUS_OK:
1132                 break;
1133         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1134         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1135         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1136                 return NT_STATUS_NO_SUCH_USER;
1137         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1138         default:
1139                 return NT_STATUS_UNSUCCESSFUL;
1140         }
1141
1142         *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1143
1144         if (domain_dn) {
1145                 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1146                                           DRSUAPI_DS_NAME_FORMAT_CANONICAL,
1147                                           DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1148                                           talloc_asprintf(mem_ctx, "%s/",
1149                                                           info1.dns_domain_name),
1150                                           &info1);
1151                 if (!W_ERROR_IS_OK(werr)) {
1152                         return werror_to_ntstatus(werr);
1153                 }
1154                 switch (info1.status) {
1155                 case DRSUAPI_DS_NAME_STATUS_OK:
1156                         break;
1157                 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1158                 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1159                 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1160                         return NT_STATUS_NO_SUCH_USER;
1161                 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1162                 default:
1163                         return NT_STATUS_UNSUCCESSFUL;
1164                 }
1165
1166                 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1167         }
1168
1169         return NT_STATUS_OK;
1170 }
1171
1172 /* Given a Service Principal Name (such as host/foo.bar.com@BAR.COM),
1173  * return the user and domain DNs.  This is used in the KDC to then
1174  * return the Keys and evaluate policy */
1175
1176 NTSTATUS crack_service_principal_name(struct ldb_context *sam_ctx,
1177                                       TALLOC_CTX *mem_ctx,
1178                                       const char *service_principal_name,
1179                                       struct ldb_dn **user_dn,
1180                                       struct ldb_dn **domain_dn)
1181 {
1182         WERROR werr;
1183         struct drsuapi_DsNameInfo1 info1;
1184         werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1185                                   DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL,
1186                                   DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1187                                   service_principal_name,
1188                                   &info1);
1189         if (!W_ERROR_IS_OK(werr)) {
1190                 return werror_to_ntstatus(werr);
1191         }
1192         switch (info1.status) {
1193         case DRSUAPI_DS_NAME_STATUS_OK:
1194                 break;
1195         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1196         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1197         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1198                 return NT_STATUS_NO_SUCH_USER;
1199         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1200         default:
1201                 return NT_STATUS_UNSUCCESSFUL;
1202         }
1203
1204         *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1205
1206         if (domain_dn) {
1207                 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1208                                           DRSUAPI_DS_NAME_FORMAT_CANONICAL,
1209                                           DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1210                                           talloc_asprintf(mem_ctx, "%s/",
1211                                                           info1.dns_domain_name),
1212                                           &info1);
1213                 if (!W_ERROR_IS_OK(werr)) {
1214                         return werror_to_ntstatus(werr);
1215                 }
1216                 switch (info1.status) {
1217                 case DRSUAPI_DS_NAME_STATUS_OK:
1218                         break;
1219                 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1220                 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1221                 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1222                         return NT_STATUS_NO_SUCH_USER;
1223                 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1224                 default:
1225                         return NT_STATUS_UNSUCCESSFUL;
1226                 }
1227
1228                 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1229         }
1230
1231         return NT_STATUS_OK;
1232 }
1233
1234 NTSTATUS crack_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1235                                 struct tevent_context *ev_ctx,
1236                                 struct loadparm_context *lp_ctx,
1237                                 enum drsuapi_DsNameFormat format_offered,
1238                                 const char *name,
1239                                 const char **nt4_domain, const char **nt4_account)
1240 {
1241         WERROR werr;
1242         struct drsuapi_DsNameInfo1 info1;
1243         struct ldb_context *ldb;
1244         char *p;
1245
1246         /* Handle anonymous bind */
1247         if (!name || !*name) {
1248                 *nt4_domain = "";
1249                 *nt4_account = "";
1250                 return NT_STATUS_OK;
1251         }
1252
1253         ldb = samdb_connect(mem_ctx, ev_ctx, lp_ctx, system_session(lp_ctx), 0);
1254         if (ldb == NULL) {
1255                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
1256         }
1257
1258         werr = DsCrackNameOneName(ldb, mem_ctx, 0,
1259                                   format_offered,
1260                                   DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT,
1261                                   name,
1262                                   &info1);
1263         if (!W_ERROR_IS_OK(werr)) {
1264                 return werror_to_ntstatus(werr);
1265         }
1266         switch (info1.status) {
1267         case DRSUAPI_DS_NAME_STATUS_OK:
1268                 break;
1269         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1270         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1271         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1272                 return NT_STATUS_NO_SUCH_USER;
1273         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1274         default:
1275                 return NT_STATUS_UNSUCCESSFUL;
1276         }
1277
1278         *nt4_domain = talloc_strdup(mem_ctx, info1.result_name);
1279         if (*nt4_domain == NULL) {
1280                 return NT_STATUS_NO_MEMORY;
1281         }
1282
1283         p = strchr(*nt4_domain, '\\');
1284         if (!p) {
1285                 return NT_STATUS_INVALID_PARAMETER;
1286         }
1287         p[0] = '\0';
1288
1289         *nt4_account = talloc_strdup(mem_ctx, &p[1]);
1290         if (*nt4_account == NULL) {
1291                 return NT_STATUS_NO_MEMORY;
1292         }
1293
1294         return NT_STATUS_OK;
1295 }
1296
1297 NTSTATUS crack_auto_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1298                                      struct tevent_context *ev_ctx,
1299                                      struct loadparm_context *lp_ctx,
1300                                      const char *name,
1301                                      const char **nt4_domain,
1302                                      const char **nt4_account)
1303 {
1304         enum drsuapi_DsNameFormat format_offered = DRSUAPI_DS_NAME_FORMAT_UNKNOWN;
1305
1306         /* Handle anonymous bind */
1307         if (!name || !*name) {
1308                 *nt4_domain = "";
1309                 *nt4_account = "";
1310                 return NT_STATUS_OK;
1311         }
1312
1313         if (strchr_m(name, '=')) {
1314                 format_offered = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
1315         } else if (strchr_m(name, '@')) {
1316                 format_offered = DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL;
1317         } else if (strchr_m(name, '\\')) {
1318                 format_offered = DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT;
1319         } else if (strchr_m(name, '/')) {
1320                 format_offered = DRSUAPI_DS_NAME_FORMAT_CANONICAL;
1321         } else {
1322                 return NT_STATUS_NO_SUCH_USER;
1323         }
1324
1325         return crack_name_to_nt4_name(mem_ctx, ev_ctx, lp_ctx, format_offered, name, nt4_domain, nt4_account);
1326 }
1327
1328
1329 WERROR dcesrv_drsuapi_ListRoles(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
1330                                 const struct drsuapi_DsNameRequest1 *req1,
1331                                 struct drsuapi_DsNameCtr1 **ctr1)
1332 {
1333         struct drsuapi_DsNameInfo1 *names;
1334         uint32_t i;
1335         uint32_t count = 5;/*number of fsmo role owners we are going to return*/
1336
1337         *ctr1 = talloc(mem_ctx, struct drsuapi_DsNameCtr1);
1338         W_ERROR_HAVE_NO_MEMORY(*ctr1);
1339         names = talloc_array(mem_ctx, struct drsuapi_DsNameInfo1, count);
1340         W_ERROR_HAVE_NO_MEMORY(names);
1341
1342         for (i = 0; i < count; i++) {
1343                 WERROR werr;
1344                 struct ldb_dn *role_owner_dn, *fsmo_role_dn, *server_dn;
1345                 werr = dsdb_get_fsmo_role_info(mem_ctx, sam_ctx, i,
1346                                                &fsmo_role_dn, &role_owner_dn);
1347                 if(!W_ERROR_IS_OK(werr)) {
1348                         return werr;
1349                 }
1350                 server_dn = ldb_dn_copy(mem_ctx, role_owner_dn);
1351                 ldb_dn_remove_child_components(server_dn, 1);
1352                 names[i].status = DRSUAPI_DS_NAME_STATUS_OK;
1353                 names[i].dns_domain_name = samdb_dn_to_dnshostname(sam_ctx, mem_ctx,
1354                                                                    server_dn);
1355                 if(!names[i].dns_domain_name) {
1356                         DEBUG(4, ("list_roles: Failed to find dNSHostName for server %s\n",
1357                                   ldb_dn_get_linearized(server_dn)));
1358                 }
1359                 names[i].result_name = talloc_strdup(mem_ctx, ldb_dn_get_linearized(role_owner_dn));
1360         }
1361
1362         (*ctr1)->count = count;
1363         (*ctr1)->array = names;
1364
1365         return WERR_OK;
1366 }
1367
1368 WERROR dcesrv_drsuapi_CrackNamesByNameFormat(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
1369                                              const struct drsuapi_DsNameRequest1 *req1,
1370                                              struct drsuapi_DsNameCtr1 **ctr1)
1371 {
1372         struct drsuapi_DsNameInfo1 *names;
1373         uint32_t i, count;
1374         WERROR status;
1375
1376         *ctr1 = talloc(mem_ctx, struct drsuapi_DsNameCtr1);
1377         W_ERROR_HAVE_NO_MEMORY(*ctr1);
1378
1379         count = req1->count;
1380         names = talloc_array(mem_ctx, struct drsuapi_DsNameInfo1, count);
1381         W_ERROR_HAVE_NO_MEMORY(names);
1382
1383         for (i=0; i < count; i++) {
1384                 status = DsCrackNameOneName(sam_ctx, mem_ctx,
1385                                             req1->format_flags,
1386                                             req1->format_offered,
1387                                             req1->format_desired,
1388                                             req1->names[i].str,
1389                                             &names[i]);
1390                 if (!W_ERROR_IS_OK(status)) {
1391                         return status;
1392                 }
1393         }
1394
1395         (*ctr1)->count = count;
1396         (*ctr1)->array = names;
1397
1398         return WERR_OK;
1399 }