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 "system/kerberos.h"
  31 #include "auth/kerberos/kerberos.h"
  32 #include "libcli/ldap/ldap_ndr.h"
  33 #include "libcli/security/security.h"
  34 #include "auth/auth.h"
  35 #include "../lib/util/util_ldb.h"
  36 #include "dsdb/samdb/samdb.h"
  37 #include "dsdb/common/util.h"
  38 #include "param/param.h"
  39
  40 static WERROR DsCrackNameOneFilter(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
  41                                    struct smb_krb5_context *smb_krb5_context,
  42                                    uint32_t format_flags, enum drsuapi_DsNameFormat format_offered,
  43                                    enum drsuapi_DsNameFormat format_desired,
  44                                    struct ldb_dn *name_dn, const char *name,
  45                                    const char *domain_filter, const char *result_filter,
  46                                    struct drsuapi_DsNameInfo1 *info1);
  47 static WERROR DsCrackNameOneSyntactical(TALLOC_CTX *mem_ctx,
  48                                         enum drsuapi_DsNameFormat format_offered,
  49                                         enum drsuapi_DsNameFormat format_desired,
  50                                         struct ldb_dn *name_dn, const char *name,
  51                                         struct drsuapi_DsNameInfo1 *info1);
  52
  53 static WERROR dns_domain_from_principal(TALLOC_CTX *mem_ctx, struct smb_krb5_context *smb_krb5_context,
  54                                         const char *name,
  55                                         struct drsuapi_DsNameInfo1 *info1)
  56 {
  57         krb5_error_code ret;
  58         krb5_principal principal;
  59         /* perhaps it's a principal with a realm, so return the right 'domain only' response */
  60         const char *realm;
  61         ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
  62                                     KRB5_PRINCIPAL_PARSE_REQUIRE_REALM, &principal);
  63         if (ret) {
  64                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
  65                 return WERR_OK;
  66         }
  67
  68         /* This isn't an allocation assignemnt, so it is free'ed with the krb5_free_principal */
  69         realm = krb5_principal_get_realm(smb_krb5_context->krb5_context, principal);
  70
  71         info1->dns_domain_name  = talloc_strdup(mem_ctx, realm);
  72         krb5_free_principal(smb_krb5_context->krb5_context, principal);
  73
  74         W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
  75
  76         info1->status = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
  77         return WERR_OK;
  78 }
  79
  80 static enum drsuapi_DsNameStatus LDB_lookup_spn_alias(krb5_context context, struct ldb_context *ldb_ctx,
  81                                                       TALLOC_CTX *mem_ctx,
  82                                                       const char *alias_from,
  83                                                       char **alias_to)
  84 {
  85         unsigned int i;
  86         int ret;
  87         struct ldb_result *res;
  88         struct ldb_message_element *spnmappings;
  89         TALLOC_CTX *tmp_ctx;
  90         struct ldb_dn *service_dn;
  91         char *service_dn_str;
  92
  93         const char *directory_attrs[] = {
  94                 "sPNMappings",
  95                 NULL
  96         };
  97
  98         tmp_ctx = talloc_new(mem_ctx);
  99         if (!tmp_ctx) {
 100                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 101         }
 102
 103         service_dn = ldb_dn_new(tmp_ctx, ldb_ctx, "CN=Directory Service,CN=Windows NT,CN=Services");
 104         if ( ! ldb_dn_add_base(service_dn, ldb_get_config_basedn(ldb_ctx))) {
 105                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 106         }
 107         service_dn_str = ldb_dn_alloc_linearized(tmp_ctx, service_dn);
 108         if ( ! service_dn_str) {
 109                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 110         }
 111
 112         ret = ldb_search(ldb_ctx, tmp_ctx, &res, service_dn, LDB_SCOPE_BASE,
 113                          directory_attrs, "(objectClass=nTDSService)");
 114
 115         if (ret != LDB_SUCCESS && ret != LDB_ERR_NO_SUCH_OBJECT) {
 116                 DEBUG(1, ("ldb_search: dn: %s not found: %s\n", service_dn_str, ldb_errstring(ldb_ctx)));
 117                 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 118         } else if (ret == LDB_ERR_NO_SUCH_OBJECT) {
 119                 DEBUG(1, ("ldb_search: dn: %s not found\n", service_dn_str));
 120                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 121         } else if (res->count != 1) {
 122                 talloc_free(res);
 123                 DEBUG(1, ("ldb_search: dn: %s not found\n", service_dn_str));
 124                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 125         }
 126
 127         spnmappings = ldb_msg_find_element(res->msgs[0], "sPNMappings");
 128         if (!spnmappings || spnmappings->num_values == 0) {
 129                 DEBUG(1, ("ldb_search: dn: %s no sPNMappings attribute\n", service_dn_str));
 130                 talloc_free(tmp_ctx);
 131                 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 132         }
 133
 134         for (i = 0; i < spnmappings->num_values; i++) {
 135                 char *mapping, *p, *str;
 136                 mapping = talloc_strdup(tmp_ctx,
 137                                         (const char *)spnmappings->values[i].data);
 138                 if (!mapping) {
 139                         DEBUG(1, ("LDB_lookup_spn_alias: ldb_search: dn: %s did not have an sPNMapping\n", service_dn_str));
 140                         talloc_free(tmp_ctx);
 141                         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 142                 }
 143
 144                 /* C string manipulation sucks */
 145
 146                 p = strchr(mapping, '=');
 147                 if (!p) {
 148                         DEBUG(1, ("ldb_search: dn: %s sPNMapping malformed: %s\n",
 149                                   service_dn_str, mapping));
 150                         talloc_free(tmp_ctx);
 151                         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 152                 }
 153                 p[0] = '\0';
 154                 p++;
 155                 do {
 156                         str = p;
 157                         p = strchr(p, ',');
 158                         if (p) {
 159                                 p[0] = '\0';
 160                                 p++;
 161                         }
 162                         if (strcasecmp(str, alias_from) == 0) {
 163                                 *alias_to = mapping;
 164                                 talloc_steal(mem_ctx, mapping);
 165                                 talloc_free(tmp_ctx);
 166                                 return DRSUAPI_DS_NAME_STATUS_OK;
 167                         }
 168                 } while (p);
 169         }
 170         DEBUG(4, ("LDB_lookup_spn_alias: no alias for service %s applicable\n", alias_from));
 171         talloc_free(tmp_ctx);
 172         return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 173 }
 174
 175 /* When cracking a ServicePrincipalName, many services may be served
 176  * by the host/ servicePrincipalName.  The incoming query is for cifs/
 177  * but we translate it here, and search on host/.  This is done after
 178  * the cifs/ entry has been searched for, making this a fallback */
 179
 180 static WERROR DsCrackNameSPNAlias(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 181                                   struct smb_krb5_context *smb_krb5_context,
 182                                   uint32_t format_flags, enum drsuapi_DsNameFormat format_offered,
 183                                   enum drsuapi_DsNameFormat format_desired,
 184                                   const char *name, struct drsuapi_DsNameInfo1 *info1)
 185 {
 186         WERROR wret;
 187         krb5_error_code ret;
 188         krb5_principal principal;
 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 (principal->name.name_string.len < 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         service = principal->name.name_string.val[0];
 213         dns_name = principal->name.name_string.val[1];
 214
 215         /* MAP it */
 216         namestatus = LDB_lookup_spn_alias(smb_krb5_context->krb5_context,
 217                                           sam_ctx, mem_ctx,
 218                                           service, &new_service);
 219
 220         if (namestatus == DRSUAPI_DS_NAME_STATUS_NOT_FOUND) {
 221                 wret = WERR_OK;
 222                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 223                 info1->dns_domain_name  = talloc_strdup(mem_ctx, dns_name);
 224                 if (!info1->dns_domain_name) {
 225                         wret = WERR_NOMEM;
 226                 }
 227                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 228                 return wret;
 229         } else if (namestatus != DRSUAPI_DS_NAME_STATUS_OK) {
 230                 info1->status = namestatus;
 231                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 232                 return WERR_OK;
 233         }
 234
 235         /* ooh, very nasty playing around in the Principal... */
 236         free(principal->name.name_string.val[0]);
 237         principal->name.name_string.val[0] = strdup(new_service);
 238         if (!principal->name.name_string.val[0]) {
 239                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 240                 return WERR_NOMEM;
 241         }
 242
 243         /* reform principal */
 244         ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 245                                       KRB5_PRINCIPAL_UNPARSE_NO_REALM, &new_princ);
 246
 247         if (ret) {
 248                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 249                 return WERR_NOMEM;
 250         }
 251
 252         wret = DsCrackNameOneName(sam_ctx, mem_ctx, format_flags, format_offered, format_desired,
 253                                   new_princ, info1);
 254         free(new_princ);
 255         if (W_ERROR_IS_OK(wret) && (info1->status == DRSUAPI_DS_NAME_STATUS_NOT_FOUND)) {
 256                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 257                 info1->dns_domain_name  = talloc_strdup(mem_ctx, dns_name);
 258                 if (!info1->dns_domain_name) {
 259                         wret = WERR_NOMEM;
 260                 }
 261         }
 262         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 263         return wret;
 264 }
 265
 266 /* Subcase of CrackNames, for the userPrincipalName */
 267
 268 static WERROR DsCrackNameUPN(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 269                              struct smb_krb5_context *smb_krb5_context,
 270                              uint32_t format_flags, enum drsuapi_DsNameFormat format_offered,
 271                              enum drsuapi_DsNameFormat format_desired,
 272                              const char *name, struct drsuapi_DsNameInfo1 *info1)
 273 {
 274         int ldb_ret;
 275         WERROR status;
 276         const char *domain_filter = NULL;
 277         const char *result_filter = NULL;
 278         krb5_error_code ret;
 279         krb5_principal principal;
 280         const char *realm;
 281         char *unparsed_name_short;
 282         const char *domain_attrs[] = { NULL };
 283         struct ldb_result *domain_res = NULL;
 284
 285         /* Prevent recursion */
 286         if (!name) {
 287                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 288                 return WERR_OK;
 289         }
 290
 291         ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
 292                                     KRB5_PRINCIPAL_PARSE_REQUIRE_REALM, &principal);
 293         if (ret) {
 294                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 295                 return WERR_OK;
 296         }
 297
 298         realm = krb5_principal_get_realm(smb_krb5_context->krb5_context,
 299                                          principal);
 300
 301         ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
 302                              samdb_partitions_dn(sam_ctx, mem_ctx),
 303                              LDB_SCOPE_ONELEVEL,
 304                              domain_attrs,
 305                              "(&(objectClass=crossRef)(|(dnsRoot=%s)(netbiosName=%s))(systemFlags:%s:=%u))",
 306                              ldb_binary_encode_string(mem_ctx, realm),
 307                              ldb_binary_encode_string(mem_ctx, realm),
 308                              LDB_OID_COMPARATOR_AND,
 309                              SYSTEM_FLAG_CR_NTDS_DOMAIN);
 310
 311         if (ldb_ret != LDB_SUCCESS) {
 312                 DEBUG(2, ("DsCrackNameUPN domain ref search failed: %s\n", ldb_errstring(sam_ctx)));
 313                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 314                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 315                 return WERR_OK;
 316         }
 317
 318         switch (domain_res->count) {
 319         case 1:
 320                 break;
 321         case 0:
 322                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 323                 return dns_domain_from_principal(mem_ctx, smb_krb5_context,
 324                                                  name, info1);
 325         default:
 326                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 327                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 328                 return WERR_OK;
 329         }
 330
 331         ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 332                                       KRB5_PRINCIPAL_UNPARSE_NO_REALM, &unparsed_name_short);
 333         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 334
 335         if (ret) {
 336                 free(unparsed_name_short);
 337                 return WERR_NOMEM;
 338         }
 339
 340         /* This may need to be extended for more userPrincipalName variations */
 341         result_filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
 342                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short));
 343
 344         domain_filter = talloc_asprintf(mem_ctx, "(distinguishedName=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
 345
 346         if (!result_filter || !domain_filter) {
 347                 free(unparsed_name_short);
 348                 return WERR_NOMEM;
 349         }
 350         status = DsCrackNameOneFilter(sam_ctx, mem_ctx,
 351                                       smb_krb5_context,
 352                                       format_flags, format_offered, format_desired,
 353                                       NULL, unparsed_name_short, domain_filter, result_filter,
 354                                       info1);
 355         free(unparsed_name_short);
 356
 357         return status;
 358 }
 359
 360 /* Crack a single 'name', from format_offered into format_desired, returning the result in info1 */
 361
 362 WERROR DsCrackNameOneName(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 363                           uint32_t format_flags, enum drsuapi_DsNameFormat format_offered,
 364                           enum drsuapi_DsNameFormat format_desired,
 365                           const char *name, struct drsuapi_DsNameInfo1 *info1)
 366 {
 367         krb5_error_code ret;
 368         const char *domain_filter = NULL;
 369         const char *result_filter = NULL;
 370         struct ldb_dn *name_dn = NULL;
 371
 372         struct smb_krb5_context *smb_krb5_context = NULL;
 373
 374         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 375         info1->dns_domain_name = NULL;
 376         info1->result_name = NULL;
 377
 378         if (!name) {
 379                 return WERR_INVALID_PARAM;
 380         }
 381
 382         /* TODO: - fill the correct names in all cases!
 383          *       - handle format_flags
 384          */
 385
 386         /* here we need to set the domain_filter and/or the result_filter */
 387         switch (format_offered) {
 388         case DRSUAPI_DS_NAME_FORMAT_UNKNOWN:
 389         {
 390                 unsigned int i;
 391                 enum drsuapi_DsNameFormat formats[] = {
 392                         DRSUAPI_DS_NAME_FORMAT_FQDN_1779, DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL,
 393                         DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT, DRSUAPI_DS_NAME_FORMAT_CANONICAL,
 394                         DRSUAPI_DS_NAME_FORMAT_GUID, DRSUAPI_DS_NAME_FORMAT_DISPLAY,
 395                         DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL,
 396                         DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY,
 397                         DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX
 398                 };
 399                 WERROR werr;
 400                 for (i=0; i < ARRAY_SIZE(formats); i++) {
 401                         werr = DsCrackNameOneName(sam_ctx, mem_ctx, format_flags, formats[i], format_desired, name, info1);
 402                         if (!W_ERROR_IS_OK(werr)) {
 403                                 return werr;
 404                         }
 405                         if (info1->status != DRSUAPI_DS_NAME_STATUS_NOT_FOUND) {
 406                                 return werr;
 407                         }
 408                 }
 409                 return werr;
 410         }
 411
 412         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 413         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 414         {
 415                 char *str, *s, *account;
 416
 417                 if (strlen(name) == 0) {
 418                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 419                         return WERR_OK;
 420                 }
 421
 422                 str = talloc_strdup(mem_ctx, name);
 423                 W_ERROR_HAVE_NO_MEMORY(str);
 424
 425                 if (format_offered == DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX) {
 426                         /* Look backwards for the \n, and replace it with / */
 427                         s = strrchr(str, '\n');
 428                         if (!s) {
 429                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 430                                 return WERR_OK;
 431                         }
 432                         s[0] = '/';
 433                 }
 434
 435                 s = strchr(str, '/');
 436                 if (!s) {
 437                         /* there must be at least one / */
 438                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 439                         return WERR_OK;
 440                 }
 441
 442                 s[0] = '\0';
 443                 s++;
 444
 445                 domain_filter = talloc_asprintf(mem_ctx, "(&(objectClass=crossRef)(dnsRoot=%s)(systemFlags:%s:=%u))",
 446                                                 ldb_binary_encode_string(mem_ctx, str),
 447                                                 LDB_OID_COMPARATOR_AND,
 448                                                 SYSTEM_FLAG_CR_NTDS_DOMAIN);
 449                 W_ERROR_HAVE_NO_MEMORY(domain_filter);
 450
 451                 /* There may not be anything after the domain component (search for the domain itself) */
 452                 if (s[0]) {
 453
 454                         account = strrchr(s, '/');
 455                         if (!account) {
 456                                 account = s;
 457                         } else {
 458                                 account++;
 459                         }
 460                         account = ldb_binary_encode_string(mem_ctx, account);
 461                         W_ERROR_HAVE_NO_MEMORY(account);
 462                         result_filter = talloc_asprintf(mem_ctx, "(name=%s)",
 463                                                         account);
 464                         W_ERROR_HAVE_NO_MEMORY(result_filter);
 465                 }
 466                 break;
 467         }
 468         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
 469                 char *p;
 470                 char *domain;
 471                 const char *account = NULL;
 472
 473                 domain = talloc_strdup(mem_ctx, name);
 474                 W_ERROR_HAVE_NO_MEMORY(domain);
 475
 476                 p = strchr(domain, '\\');
 477                 if (!p) {
 478                         /* invalid input format */
 479                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 480                         return WERR_OK;
 481                 }
 482                 p[0] = '\0';
 483
 484                 if (p[1]) {
 485                         account = &p[1];
 486                 }
 487
 488                 domain_filter = talloc_asprintf(mem_ctx,
 489                                                 "(&(objectClass=crossRef)(|(dnsRoot=%s)(netbiosName=%s))(systemFlags:%s:=%u))",
 490                                                 ldb_binary_encode_string(mem_ctx, domain),
 491                                                 ldb_binary_encode_string(mem_ctx, domain),
 492                                                 LDB_OID_COMPARATOR_AND,
 493                                                 SYSTEM_FLAG_CR_NTDS_DOMAIN);
 494                 W_ERROR_HAVE_NO_MEMORY(domain_filter);
 495                 if (account) {
 496                         result_filter = talloc_asprintf(mem_ctx, "(sAMAccountName=%s)",
 497                                                         ldb_binary_encode_string(mem_ctx, account));
 498                         W_ERROR_HAVE_NO_MEMORY(result_filter);
 499                 }
 500
 501                 talloc_free(domain);
 502                 break;
 503         }
 504
 505                 /* A LDAP DN as a string */
 506         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779: {
 507                 domain_filter = NULL;
 508                 name_dn = ldb_dn_new(mem_ctx, sam_ctx, name);
 509                 if (! ldb_dn_validate(name_dn)) {
 510                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 511                         return WERR_OK;
 512                 }
 513                 break;
 514         }
 515
 516                 /* A GUID as a string */
 517         case DRSUAPI_DS_NAME_FORMAT_GUID: {
 518                 struct GUID guid;
 519                 char *ldap_guid;
 520                 NTSTATUS nt_status;
 521                 domain_filter = NULL;
 522
 523                 nt_status = GUID_from_string(name, &guid);
 524                 if (!NT_STATUS_IS_OK(nt_status)) {
 525                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 526                         return WERR_OK;
 527                 }
 528
 529                 ldap_guid = ldap_encode_ndr_GUID(mem_ctx, &guid);
 530                 if (!ldap_guid) {
 531                         return WERR_NOMEM;
 532                 }
 533                 result_filter = talloc_asprintf(mem_ctx, "(objectGUID=%s)",
 534                                                 ldap_guid);
 535                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 536                 break;
 537         }
 538         case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
 539                 domain_filter = NULL;
 540
 541                 result_filter = talloc_asprintf(mem_ctx, "(|(displayName=%s)(samAccountName=%s))",
 542                                                 ldb_binary_encode_string(mem_ctx, name),
 543                                                 ldb_binary_encode_string(mem_ctx, name));
 544                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 545                 break;
 546         }
 547
 548                 /* A S-1234-5678 style string */
 549         case DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY: {
 550                 struct dom_sid *sid = dom_sid_parse_talloc(mem_ctx, name);
 551                 char *ldap_sid;
 552
 553                 domain_filter = NULL;
 554                 if (!sid) {
 555                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 556                         return WERR_OK;
 557                 }
 558                 ldap_sid = ldap_encode_ndr_dom_sid(mem_ctx,
 559                                                    sid);
 560                 if (!ldap_sid) {
 561                         return WERR_NOMEM;
 562                 }
 563                 result_filter = talloc_asprintf(mem_ctx, "(objectSid=%s)",
 564                                                 ldap_sid);
 565                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 566                 break;
 567         }
 568         case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL: {
 569                 krb5_principal principal;
 570                 char *unparsed_name;
 571
 572                 ret = smb_krb5_init_context(mem_ctx,
 573                                             ldb_get_event_context(sam_ctx),
 574                                             (struct loadparm_context *)ldb_get_opaque(sam_ctx, "loadparm"),
 575                                             &smb_krb5_context);
 576
 577                 if (ret) {
 578                         return WERR_NOMEM;
 579                 }
 580
 581                 /* Ensure we reject compleate junk first */
 582                 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
 583                 if (ret) {
 584                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 585                         return WERR_OK;
 586                 }
 587
 588                 domain_filter = NULL;
 589
 590                 /* By getting the unparsed name here, we ensure the escaping is correct (and trust the client less) */
 591                 ret = krb5_unparse_name(smb_krb5_context->krb5_context, principal, &unparsed_name);
 592                 if (ret) {
 593                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 594                         return WERR_NOMEM;
 595                 }
 596
 597                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 598
 599                 /* The ldb_binary_encode_string() here avoid LDAP filter injection attacks */
 600                 result_filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(userPrincipalName=%s))",
 601                                                 ldb_binary_encode_string(mem_ctx, unparsed_name));
 602
 603                 free(unparsed_name);
 604                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 605                 break;
 606         }
 607         case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
 608                 krb5_principal principal;
 609                 char *unparsed_name_short;
 610                 char *service;
 611
 612                 ret = smb_krb5_init_context(mem_ctx,
 613                                             ldb_get_event_context(sam_ctx),
 614                                             (struct loadparm_context *)ldb_get_opaque(sam_ctx, "loadparm"),
 615                                             &smb_krb5_context);
 616
 617                 if (ret) {
 618                         return WERR_NOMEM;
 619                 }
 620
 621                 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
 622                 if (ret == 0 && principal->name.name_string.len < 2) {
 623                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 624                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 625                         return WERR_OK;
 626                 } else if (ret == 0) {
 627                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 628                 }
 629                 ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
 630                                             KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
 631                 if (ret) {
 632                         return dns_domain_from_principal(mem_ctx, smb_krb5_context,
 633                                                          name, info1);
 634                 }
 635
 636                 domain_filter = NULL;
 637
 638                 ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
 639                                               KRB5_PRINCIPAL_UNPARSE_NO_REALM, &unparsed_name_short);
 640                 if (ret) {
 641                         krb5_free_principal(smb_krb5_context->krb5_context, principal);
 642                         return WERR_NOMEM;
 643                 }
 644
 645                 service = principal->name.name_string.val[0];
 646                 if ((principal->name.name_string.len == 2) && (strcasecmp(service, "host") == 0)) {
 647                         /* the 'cn' attribute is just the leading part of the name */
 648                         char *computer_name;
 649                         computer_name = talloc_strndup(mem_ctx, principal->name.name_string.val[1],
 650                                                       strcspn(principal->name.name_string.val[1], "."));
 651                         if (computer_name == NULL) {
 652                                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 653                                 free(unparsed_name_short);
 654                                 return WERR_NOMEM;
 655                         }
 656
 657                         result_filter = talloc_asprintf(mem_ctx, "(|(&(servicePrincipalName=%s)(objectClass=user))(&(cn=%s)(objectClass=computer)))",
 658                                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short),
 659                                                         ldb_binary_encode_string(mem_ctx, computer_name));
 660                 } else {
 661                         result_filter = talloc_asprintf(mem_ctx, "(&(servicePrincipalName=%s)(objectClass=user))",
 662                                                         ldb_binary_encode_string(mem_ctx, unparsed_name_short));
 663                 }
 664                 krb5_free_principal(smb_krb5_context->krb5_context, principal);
 665                 free(unparsed_name_short);
 666                 W_ERROR_HAVE_NO_MEMORY(result_filter);
 667
 668                 break;
 669         }
 670         default: {
 671                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 672                 return WERR_OK;
 673         }
 674         }
 675
 676         if (format_flags & DRSUAPI_DS_NAME_FLAG_SYNTACTICAL_ONLY) {
 677                 return DsCrackNameOneSyntactical(mem_ctx, format_offered, format_desired,
 678                                                  name_dn, name, info1);
 679         }
 680
 681         return DsCrackNameOneFilter(sam_ctx, mem_ctx,
 682                                     smb_krb5_context,
 683                                     format_flags, format_offered, format_desired,
 684                                     name_dn, name,
 685                                     domain_filter, result_filter,
 686                                     info1);
 687 }
 688
 689 /* Subcase of CrackNames.  It is possible to translate a LDAP-style DN
 690  * (FQDN_1779) into a canoical name without actually searching the
 691  * database */
 692
 693 static WERROR DsCrackNameOneSyntactical(TALLOC_CTX *mem_ctx,
 694                                         enum drsuapi_DsNameFormat format_offered,
 695                                         enum drsuapi_DsNameFormat format_desired,
 696                                         struct ldb_dn *name_dn, const char *name,
 697                                         struct drsuapi_DsNameInfo1 *info1)
 698 {
 699         char *cracked;
 700         if (format_offered != DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
 701                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
 702                 return WERR_OK;
 703         }
 704
 705         switch (format_desired) {
 706         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 707                 cracked = ldb_dn_canonical_string(mem_ctx, name_dn);
 708                 break;
 709         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 710                 cracked = ldb_dn_canonical_ex_string(mem_ctx, name_dn);
 711                 break;
 712         default:
 713                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
 714                 return WERR_OK;
 715         }
 716         info1->status = DRSUAPI_DS_NAME_STATUS_OK;
 717         info1->result_name      = cracked;
 718         if (!cracked) {
 719                 return WERR_NOMEM;
 720         }
 721
 722         return WERR_OK;
 723 }
 724
 725 /* Given a filter for the domain, and one for the result, perform the
 726  * ldb search. The format offered and desired flags change the
 727  * behaviours, including what attributes to return.
 728  *
 729  * The smb_krb5_context is required because we use the krb5 libs for principal parsing
 730  */
 731
 732 static WERROR DsCrackNameOneFilter(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
 733                                    struct smb_krb5_context *smb_krb5_context,
 734                                    uint32_t format_flags, enum drsuapi_DsNameFormat format_offered,
 735                                    enum drsuapi_DsNameFormat format_desired,
 736                                    struct ldb_dn *name_dn, const char *name,
 737                                    const char *domain_filter, const char *result_filter,
 738                                    struct drsuapi_DsNameInfo1 *info1)
 739 {
 740         int ldb_ret;
 741         struct ldb_result *domain_res = NULL;
 742         const char * const *domain_attrs;
 743         const char * const *result_attrs;
 744         struct ldb_message **result_res = NULL;
 745         struct ldb_message *result = NULL;
 746         int i;
 747         char *p;
 748         struct ldb_dn *partitions_basedn = samdb_partitions_dn(sam_ctx, mem_ctx);
 749
 750         const char * const _domain_attrs_1779[] = { "ncName", "dnsRoot", NULL};
 751         const char * const _result_attrs_null[] = { NULL };
 752
 753         const char * const _domain_attrs_canonical[] = { "ncName", "dnsRoot", NULL};
 754         const char * const _result_attrs_canonical[] = { "canonicalName", NULL };
 755
 756         const char * const _domain_attrs_nt4[] = { "ncName", "dnsRoot", "nETBIOSName", NULL};
 757         const char * const _result_attrs_nt4[] = { "sAMAccountName", "objectSid", "objectClass", NULL};
 758
 759         const char * const _domain_attrs_guid[] = { "ncName", "dnsRoot", NULL};
 760         const char * const _result_attrs_guid[] = { "objectGUID", NULL};
 761
 762         const char * const _domain_attrs_display[] = { "ncName", "dnsRoot", NULL};
 763         const char * const _result_attrs_display[] = { "displayName", "samAccountName", NULL};
 764
 765         const char * const _domain_attrs_none[] = { "ncName", "dnsRoot" , NULL};
 766         const char * const _result_attrs_none[] = { NULL};
 767
 768         /* here we need to set the attrs lists for domain and result lookups */
 769         switch (format_desired) {
 770         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779:
 771         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 772                 domain_attrs = _domain_attrs_1779;
 773                 result_attrs = _result_attrs_null;
 774                 break;
 775         case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 776                 domain_attrs = _domain_attrs_canonical;
 777                 result_attrs = _result_attrs_canonical;
 778                 break;
 779         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT:
 780                 domain_attrs = _domain_attrs_nt4;
 781                 result_attrs = _result_attrs_nt4;
 782                 break;
 783         case DRSUAPI_DS_NAME_FORMAT_GUID:
 784                 domain_attrs = _domain_attrs_guid;
 785                 result_attrs = _result_attrs_guid;
 786                 break;
 787         case DRSUAPI_DS_NAME_FORMAT_DISPLAY:
 788                 domain_attrs = _domain_attrs_display;
 789                 result_attrs = _result_attrs_display;
 790                 break;
 791         default:
 792                 domain_attrs = _domain_attrs_none;
 793                 result_attrs = _result_attrs_none;
 794                 break;
 795         }
 796
 797         if (domain_filter) {
 798                 /* if we have a domain_filter look it up and set the result_basedn and the dns_domain_name */
 799                 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
 800                                              partitions_basedn,
 801                                              LDB_SCOPE_ONELEVEL,
 802                                              domain_attrs,
 803                                              "%s", domain_filter);
 804
 805                 if (ldb_ret != LDB_SUCCESS) {
 806                         DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s\n", ldb_errstring(sam_ctx)));
 807                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 808                         return WERR_OK;
 809                 }
 810
 811                 switch (domain_res->count) {
 812                 case 1:
 813                         break;
 814                 case 0:
 815                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 816                         return WERR_OK;
 817                 default:
 818                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 819                         return WERR_OK;
 820                 }
 821
 822                 info1->dns_domain_name  = ldb_msg_find_attr_as_string(domain_res->msgs[0], "dnsRoot", NULL);
 823                 W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
 824                 info1->status           = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
 825         } else {
 826                 info1->dns_domain_name  = NULL;
 827                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 828         }
 829
 830         if (result_filter) {
 831                 int ret;
 832                 struct ldb_result *res;
 833                 uint32_t dsdb_flags = 0;
 834                 struct ldb_dn *search_dn;
 835
 836                 if (domain_res) {
 837                         dsdb_flags = 0;
 838                         search_dn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
 839                 } else {
 840                         dsdb_flags = DSDB_SEARCH_SEARCH_ALL_PARTITIONS;
 841                         search_dn = NULL;
 842                 }
 843                 if (format_desired == DRSUAPI_DS_NAME_FORMAT_GUID){
 844                          dsdb_flags = dsdb_flags| DSDB_SEARCH_SHOW_DELETED;
 845                 }
 846
 847                 /* search with the 'phantom root' flag */
 848                 ret = dsdb_search(sam_ctx, mem_ctx, &res,
 849                                   search_dn,
 850                                   LDB_SCOPE_SUBTREE,
 851                                   result_attrs,
 852                                   dsdb_flags,
 853                                   "%s", result_filter);
 854                 if (ret != LDB_SUCCESS) {
 855                         DEBUG(2, ("DsCrackNameOneFilter phantom root search failed: %s\n",
 856                                   ldb_errstring(sam_ctx)));
 857                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 858                         return WERR_OK;
 859                 }
 860
 861                 ldb_ret = res->count;
 862                 result_res = res->msgs;
 863         } else if (format_offered == DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
 864                 ldb_ret = gendb_search_dn(sam_ctx, mem_ctx, name_dn, &result_res,
 865                                           result_attrs);
 866         } else if (domain_res) {
 867                 name_dn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
 868                 ldb_ret = gendb_search_dn(sam_ctx, mem_ctx, name_dn, &result_res,
 869                                           result_attrs);
 870         } else {
 871                 /* Can't happen */
 872                 DEBUG(0, ("LOGIC ERROR: DsCrackNameOneFilter domain ref search not available: This can't happen...\n"));
 873                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 874                 return WERR_OK;
 875         }
 876
 877         switch (ldb_ret) {
 878         case 1:
 879                 result = result_res[0];
 880                 break;
 881         case 0:
 882                 switch (format_offered) {
 883                 case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL:
 884                         return DsCrackNameSPNAlias(sam_ctx, mem_ctx,
 885                                                    smb_krb5_context,
 886                                                    format_flags, format_offered, format_desired,
 887                                                    name, info1);
 888
 889                 case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL:
 890                         return DsCrackNameUPN(sam_ctx, mem_ctx, smb_krb5_context,
 891                                               format_flags, format_offered, format_desired,
 892                                               name, info1);
 893                 default:
 894                         break;
 895                 }
 896                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 897                 return WERR_OK;
 898         case -1:
 899                 DEBUG(2, ("DsCrackNameOneFilter result search failed: %s\n", ldb_errstring(sam_ctx)));
 900                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 901                 return WERR_OK;
 902         default:
 903                 switch (format_offered) {
 904                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 905                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 906                 {
 907                         const char *canonical_name = NULL; /* Not required, but we get warnings... */
 908                         /* We may need to manually filter further */
 909                         for (i = 0; i < ldb_ret; i++) {
 910                                 switch (format_offered) {
 911                                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
 912                                         canonical_name = ldb_dn_canonical_string(mem_ctx, result_res[i]->dn);
 913                                         break;
 914                                 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
 915                                         canonical_name = ldb_dn_canonical_ex_string(mem_ctx, result_res[i]->dn);
 916                                         break;
 917                                 default:
 918                                         break;
 919                                 }
 920                                 if (strcasecmp_m(canonical_name, name) == 0) {
 921                                         result = result_res[i];
 922                                         break;
 923                                 }
 924                         }
 925                         if (!result) {
 926                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 927                                 return WERR_OK;
 928                         }
 929                 }
 930                 default:
 931                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 932                         return WERR_OK;
 933                 }
 934         }
 935
 936         info1->dns_domain_name = ldb_dn_canonical_string(mem_ctx, result->dn);
 937         W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
 938         p = strchr(info1->dns_domain_name, '/');
 939         if (p) {
 940                 p[0] = '\0';
 941         }
 942
 943         /* here we can use result and domain_res[0] */
 944         switch (format_desired) {
 945         case DRSUAPI_DS_NAME_FORMAT_FQDN_1779: {
 946                 info1->result_name      = ldb_dn_alloc_linearized(mem_ctx, result->dn);
 947                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
 948
 949                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
 950                 return WERR_OK;
 951         }
 952         case DRSUAPI_DS_NAME_FORMAT_CANONICAL: {
 953                 info1->result_name      = ldb_msg_find_attr_as_string(result, "canonicalName", NULL);
 954                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
 955                 return WERR_OK;
 956         }
 957         case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX: {
 958                 /* Not in the virtual ldb attribute */
 959                 return DsCrackNameOneSyntactical(mem_ctx,
 960                                                  DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
 961                                                  DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX,
 962                                                  result->dn, name, info1);
 963         }
 964         case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
 965
 966                 const struct dom_sid *sid = samdb_result_dom_sid(mem_ctx, result, "objectSid");
 967                 const char *_acc = "", *_dom = "";
 968
 969                 if (samdb_find_attribute(sam_ctx, result, "objectClass", "domain")) {
 970
 971                         ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
 972                                                      partitions_basedn,
 973                                                      LDB_SCOPE_ONELEVEL,
 974                                                      domain_attrs,
 975                                                      "(ncName=%s)", ldb_dn_get_linearized(result->dn));
 976
 977                         if (ldb_ret != LDB_SUCCESS) {
 978                                 DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s\n", ldb_errstring(sam_ctx)));
 979                                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
 980                                 return WERR_OK;
 981                         }
 982
 983                         switch (domain_res->count) {
 984                         case 1:
 985                                 break;
 986                         case 0:
 987                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
 988                                 return WERR_OK;
 989                         default:
 990                                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
 991                                 return WERR_OK;
 992                         }
 993                         _dom = ldb_msg_find_attr_as_string(domain_res->msgs[0], "nETBIOSName", NULL);
 994                         W_ERROR_HAVE_NO_MEMORY(_dom);
 995                 } else {
 996                         _acc = ldb_msg_find_attr_as_string(result, "sAMAccountName", NULL);
 997                         if (!_acc) {
 998                                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
 999                                 return WERR_OK;
1000                         }
1001                         if (dom_sid_in_domain(dom_sid_parse_talloc(mem_ctx, SID_BUILTIN), sid)) {
1002                                 _dom = "BUILTIN";
1003                         } else {
1004                                 const char *attrs[] = { NULL };
1005                                 struct ldb_result *domain_res2;
1006                                 struct dom_sid *dom_sid = dom_sid_dup(mem_ctx, sid);
1007                                 if (!dom_sid) {
1008                                         return WERR_OK;
1009                                 }
1010                                 dom_sid->num_auths--;
1011                                 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
1012                                                              NULL,
1013                                                              LDB_SCOPE_BASE,
1014                                                              attrs,
1015                                                              "(&(objectSid=%s)(objectClass=domain))",
1016                                                              ldap_encode_ndr_dom_sid(mem_ctx, dom_sid));
1017
1018                                 if (ldb_ret != LDB_SUCCESS) {
1019                                         DEBUG(2, ("DsCrackNameOneFilter domain search failed: %s\n", ldb_errstring(sam_ctx)));
1020                                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1021                                         return WERR_OK;
1022                                 }
1023
1024                                 switch (domain_res->count) {
1025                                 case 1:
1026                                         break;
1027                                 case 0:
1028                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1029                                         return WERR_OK;
1030                                 default:
1031                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1032                                         return WERR_OK;
1033                                 }
1034
1035                                 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res2,
1036                                                              partitions_basedn,
1037                                                              LDB_SCOPE_ONELEVEL,
1038                                                              domain_attrs,
1039                                                              "(ncName=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
1040
1041                                 if (ldb_ret != LDB_SUCCESS) {
1042                                         DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s\n", ldb_errstring(sam_ctx)));
1043                                         info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1044                                         return WERR_OK;
1045                                 }
1046
1047                                 switch (domain_res2->count) {
1048                                 case 1:
1049                                         break;
1050                                 case 0:
1051                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1052                                         return WERR_OK;
1053                                 default:
1054                                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1055                                         return WERR_OK;
1056                                 }
1057                                 _dom = ldb_msg_find_attr_as_string(domain_res2->msgs[0], "nETBIOSName", NULL);
1058                                 W_ERROR_HAVE_NO_MEMORY(_dom);
1059                         }
1060                 }
1061
1062                 info1->result_name      = talloc_asprintf(mem_ctx, "%s\\%s", _dom, _acc);
1063                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1064
1065                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1066                 return WERR_OK;
1067         }
1068         case DRSUAPI_DS_NAME_FORMAT_GUID: {
1069                 struct GUID guid;
1070
1071                 guid = samdb_result_guid(result, "objectGUID");
1072
1073                 info1->result_name      = GUID_string2(mem_ctx, &guid);
1074                 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1075
1076                 info1->status           = DRSUAPI_DS_NAME_STATUS_OK;
1077                 return WERR_OK;
1078         }
1079         case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
1080                 info1->result_name      = ldb_msg_find_attr_as_string(result, "displayName", NULL);
1081                 if (!info1->result_name) {
1082                         info1->result_name      = ldb_msg_find_attr_as_string(result, "sAMAccountName", NULL);
1083                 }
1084                 if (!info1->result_name) {
1085                         info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1086                 } else {
1087                         info1->status = DRSUAPI_DS_NAME_STATUS_OK;
1088                 }
1089                 return WERR_OK;
1090         }
1091         case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
1092                 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1093                 return WERR_OK;
1094         }
1095         case DRSUAPI_DS_NAME_FORMAT_DNS_DOMAIN:
1096         case DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY: {
1097                 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1098                 return WERR_OK;
1099         }
1100         default:
1101                 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
1102                 return WERR_OK;
1103         }
1104 }
1105
1106 /* Given a user Principal Name (such as foo@bar.com),
1107  * return the user and domain DNs.  This is used in the KDC to then
1108  * return the Keys and evaluate policy */
1109
1110 NTSTATUS crack_user_principal_name(struct ldb_context *sam_ctx,
1111                                    TALLOC_CTX *mem_ctx,
1112                                    const char *user_principal_name,
1113                                    struct ldb_dn **user_dn,
1114                                    struct ldb_dn **domain_dn)
1115 {
1116         WERROR werr;
1117         struct drsuapi_DsNameInfo1 info1;
1118         werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1119                                   DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL,
1120                                   DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1121                                   user_principal_name,
1122                                   &info1);
1123         if (!W_ERROR_IS_OK(werr)) {
1124                 return werror_to_ntstatus(werr);
1125         }
1126         switch (info1.status) {
1127         case DRSUAPI_DS_NAME_STATUS_OK:
1128                 break;
1129         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1130         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1131         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1132                 return NT_STATUS_NO_SUCH_USER;
1133         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1134         default:
1135                 return NT_STATUS_UNSUCCESSFUL;
1136         }
1137
1138         *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1139
1140         if (domain_dn) {
1141                 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1142                                           DRSUAPI_DS_NAME_FORMAT_CANONICAL,
1143                                           DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1144                                           talloc_asprintf(mem_ctx, "%s/",
1145                                                           info1.dns_domain_name),
1146                                           &info1);
1147                 if (!W_ERROR_IS_OK(werr)) {
1148                         return werror_to_ntstatus(werr);
1149                 }
1150                 switch (info1.status) {
1151                 case DRSUAPI_DS_NAME_STATUS_OK:
1152                         break;
1153                 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1154                 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1155                 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1156                         return NT_STATUS_NO_SUCH_USER;
1157                 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1158                 default:
1159                         return NT_STATUS_UNSUCCESSFUL;
1160                 }
1161
1162                 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1163         }
1164
1165         return NT_STATUS_OK;
1166 }
1167
1168 /* Given a Service Principal Name (such as host/foo.bar.com@BAR.COM),
1169  * return the user and domain DNs.  This is used in the KDC to then
1170  * return the Keys and evaluate policy */
1171
1172 NTSTATUS crack_service_principal_name(struct ldb_context *sam_ctx,
1173                                       TALLOC_CTX *mem_ctx,
1174                                       const char *service_principal_name,
1175                                       struct ldb_dn **user_dn,
1176                                       struct ldb_dn **domain_dn)
1177 {
1178         WERROR werr;
1179         struct drsuapi_DsNameInfo1 info1;
1180         werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1181                                   DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL,
1182                                   DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1183                                   service_principal_name,
1184                                   &info1);
1185         if (!W_ERROR_IS_OK(werr)) {
1186                 return werror_to_ntstatus(werr);
1187         }
1188         switch (info1.status) {
1189         case DRSUAPI_DS_NAME_STATUS_OK:
1190                 break;
1191         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1192         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1193         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1194                 return NT_STATUS_NO_SUCH_USER;
1195         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1196         default:
1197                 return NT_STATUS_UNSUCCESSFUL;
1198         }
1199
1200         *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1201
1202         if (domain_dn) {
1203                 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1204                                           DRSUAPI_DS_NAME_FORMAT_CANONICAL,
1205                                           DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1206                                           talloc_asprintf(mem_ctx, "%s/",
1207                                                           info1.dns_domain_name),
1208                                           &info1);
1209                 if (!W_ERROR_IS_OK(werr)) {
1210                         return werror_to_ntstatus(werr);
1211                 }
1212                 switch (info1.status) {
1213                 case DRSUAPI_DS_NAME_STATUS_OK:
1214                         break;
1215                 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1216                 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1217                 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1218                         return NT_STATUS_NO_SUCH_USER;
1219                 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1220                 default:
1221                         return NT_STATUS_UNSUCCESSFUL;
1222                 }
1223
1224                 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1225         }
1226
1227         return NT_STATUS_OK;
1228 }
1229
1230 NTSTATUS crack_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1231                                 struct tevent_context *ev_ctx,
1232                                 struct loadparm_context *lp_ctx,
1233                                 enum drsuapi_DsNameFormat format_offered,
1234                                 const char *name,
1235                                 const char **nt4_domain, const char **nt4_account)
1236 {
1237         WERROR werr;
1238         struct drsuapi_DsNameInfo1 info1;
1239         struct ldb_context *ldb;
1240         char *p;
1241
1242         /* Handle anonymous bind */
1243         if (!name || !*name) {
1244                 *nt4_domain = "";
1245                 *nt4_account = "";
1246                 return NT_STATUS_OK;
1247         }
1248
1249         ldb = samdb_connect(mem_ctx, ev_ctx, lp_ctx, system_session(lp_ctx), 0);
1250         if (ldb == NULL) {
1251                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
1252         }
1253
1254         werr = DsCrackNameOneName(ldb, mem_ctx, 0,
1255                                   format_offered,
1256                                   DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT,
1257                                   name,
1258                                   &info1);
1259         if (!W_ERROR_IS_OK(werr)) {
1260                 return werror_to_ntstatus(werr);
1261         }
1262         switch (info1.status) {
1263         case DRSUAPI_DS_NAME_STATUS_OK:
1264                 break;
1265         case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1266         case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1267         case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1268                 return NT_STATUS_NO_SUCH_USER;
1269         case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1270         default:
1271                 return NT_STATUS_UNSUCCESSFUL;
1272         }
1273
1274         *nt4_domain = talloc_strdup(mem_ctx, info1.result_name);
1275         if (*nt4_domain == NULL) {
1276                 return NT_STATUS_NO_MEMORY;
1277         }
1278
1279         p = strchr(*nt4_domain, '\\');
1280         if (!p) {
1281                 return NT_STATUS_INVALID_PARAMETER;
1282         }
1283         p[0] = '\0';
1284
1285         *nt4_account = talloc_strdup(mem_ctx, &p[1]);
1286         if (*nt4_account == NULL) {
1287                 return NT_STATUS_NO_MEMORY;
1288         }
1289
1290         return NT_STATUS_OK;
1291 }
1292
1293 NTSTATUS crack_auto_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1294                                      struct tevent_context *ev_ctx,
1295                                      struct loadparm_context *lp_ctx,
1296                                      const char *name,
1297                                      const char **nt4_domain,
1298                                      const char **nt4_account)
1299 {
1300         enum drsuapi_DsNameFormat format_offered = DRSUAPI_DS_NAME_FORMAT_UNKNOWN;
1301
1302         /* Handle anonymous bind */
1303         if (!name || !*name) {
1304                 *nt4_domain = "";
1305                 *nt4_account = "";
1306                 return NT_STATUS_OK;
1307         }
1308
1309         if (strchr_m(name, '=')) {
1310                 format_offered = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
1311         } else if (strchr_m(name, '@')) {
1312                 format_offered = DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL;
1313         } else if (strchr_m(name, '\\')) {
1314                 format_offered = DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT;
1315         } else if (strchr_m(name, '/')) {
1316                 format_offered = DRSUAPI_DS_NAME_FORMAT_CANONICAL;
1317         } else {
1318                 return NT_STATUS_NO_SUCH_USER;
1319         }
1320
1321         return crack_name_to_nt4_name(mem_ctx, ev_ctx, lp_ctx, format_offered, name, nt4_domain, nt4_account);
1322 }
1323
1324
1325 WERROR dcesrv_drsuapi_ListRoles(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
1326                                 const struct drsuapi_DsNameRequest1 *req1,
1327                                 struct drsuapi_DsNameCtr1 **ctr1)
1328 {
1329         struct drsuapi_DsNameInfo1 *names;
1330         uint32_t i;
1331         uint32_t count = 5;/*number of fsmo role owners we are going to return*/
1332
1333         *ctr1 = talloc(mem_ctx, struct drsuapi_DsNameCtr1);
1334         W_ERROR_HAVE_NO_MEMORY(*ctr1);
1335         names = talloc_array(mem_ctx, struct drsuapi_DsNameInfo1, count);
1336         W_ERROR_HAVE_NO_MEMORY(names);
1337
1338         for (i = 0; i < count; i++) {
1339                 WERROR werr;
1340                 struct ldb_dn *role_owner_dn, *fsmo_role_dn, *server_dn;
1341                 werr = dsdb_get_fsmo_role_info(mem_ctx, sam_ctx, i,
1342                                                &fsmo_role_dn, &role_owner_dn);
1343                 if(!W_ERROR_IS_OK(werr)) {
1344                         return werr;
1345                 }
1346                 server_dn = ldb_dn_copy(mem_ctx, role_owner_dn);
1347                 ldb_dn_remove_child_components(server_dn, 1);
1348                 names[i].status = DRSUAPI_DS_NAME_STATUS_OK;
1349                 names[i].dns_domain_name = samdb_dn_to_dnshostname(sam_ctx, mem_ctx,
1350                                                                    server_dn);
1351                 if(!names[i].dns_domain_name) {
1352                         DEBUG(4, ("list_roles: Failed to find dNSHostName for server %s\n",
1353                                   ldb_dn_get_linearized(server_dn)));
1354                 }
1355                 names[i].result_name = talloc_strdup(mem_ctx, ldb_dn_get_linearized(role_owner_dn));
1356         }
1357
1358         (*ctr1)->count = count;
1359         (*ctr1)->array = names;
1360
1361         return WERR_OK;
1362 }
1363
1364 WERROR dcesrv_drsuapi_CrackNamesByNameFormat(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
1365                                              const struct drsuapi_DsNameRequest1 *req1,
1366                                              struct drsuapi_DsNameCtr1 **ctr1)
1367 {
1368         struct drsuapi_DsNameInfo1 *names;
1369         uint32_t i, count;
1370         WERROR status;
1371
1372         *ctr1 = talloc(mem_ctx, struct drsuapi_DsNameCtr1);
1373         W_ERROR_HAVE_NO_MEMORY(*ctr1);
1374
1375         count = req1->count;
1376         names = talloc_array(mem_ctx, struct drsuapi_DsNameInfo1, count);
1377         W_ERROR_HAVE_NO_MEMORY(names);
1378
1379         for (i=0; i < count; i++) {
1380                 status = DsCrackNameOneName(sam_ctx, mem_ctx,
1381                                             req1->format_flags,
1382                                             req1->format_offered,
1383                                             req1->format_desired,
1384                                             req1->names[i].str,
1385                                             &names[i]);
1386                 if (!W_ERROR_IS_OK(status)) {
1387                         return status;
1388                 }
1389         }
1390
1391         (*ctr1)->count = count;
1392         (*ctr1)->array = names;
1393
1394         return WERR_OK;
1395 }