source/registry/reg_api.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Virtual Windows Registry Layer
   4  *  Copyright (C) Volker Lendecke 2006
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 /* Attempt to wrap the existing API in a more winreg.idl-like way */
  21
  22 #include "includes.h"
  23
  24 #undef DBGC_CLASS
  25 #define DBGC_CLASS DBGC_REGISTRY
  26
  27 static WERROR fill_value_cache(struct registry_key *key)
  28 {
  29         if (key->values != NULL) {
  30                 return WERR_OK;
  31         }
  32
  33         if (!(key->values = TALLOC_ZERO_P(key, REGVAL_CTR))) {
  34                 return WERR_NOMEM;
  35         }
  36         if (fetch_reg_values(key->key, key->values) == -1) {
  37                 TALLOC_FREE(key->values);
  38                 return WERR_BADFILE;
  39         }
  40
  41         return WERR_OK;
  42 }
  43
  44 static WERROR fill_subkey_cache(struct registry_key *key)
  45 {
  46         if (key->subkeys != NULL) {
  47                 return WERR_OK;
  48         }
  49
  50         if (!(key->subkeys = TALLOC_ZERO_P(key, REGSUBKEY_CTR))) {
  51                 return WERR_NOMEM;
  52         }
  53
  54         if (fetch_reg_keys(key->key, key->subkeys) == -1) {
  55                 TALLOC_FREE(key->subkeys);
  56                 return WERR_NO_MORE_ITEMS;
  57         }
  58
  59         return WERR_OK;
  60 }
  61
  62 static int regkey_destructor(REGISTRY_KEY *key)
  63 {
  64         return regdb_close();
  65 }
  66
  67 static WERROR regkey_open_onelevel(TALLOC_CTX *mem_ctx,
  68                                    struct registry_key *parent,
  69                                    const char *name,
  70                                    const struct nt_user_token *token,
  71                                    uint32 access_desired,
  72                                    struct registry_key **pregkey)
  73 {
  74         WERROR          result = WERR_OK;
  75         struct registry_key *regkey;
  76         REGISTRY_KEY *key;
  77         REGSUBKEY_CTR   *subkeys = NULL;
  78
  79         DEBUG(7,("regkey_open_onelevel: name = [%s]\n", name));
  80
  81         SMB_ASSERT(strchr(name, '\\') == NULL);
  82
  83         if (!(regkey = TALLOC_ZERO_P(mem_ctx, struct registry_key)) ||
  84             !(regkey->token = dup_nt_token(regkey, token)) ||
  85             !(regkey->key = TALLOC_ZERO_P(regkey, REGISTRY_KEY))) {
  86                 result = WERR_NOMEM;
  87                 goto done;
  88         }
  89
  90         if ( !(W_ERROR_IS_OK(result = regdb_open())) ) {
  91                 goto done;
  92         }
  93
  94         key = regkey->key;
  95         talloc_set_destructor(key, regkey_destructor);
  96
  97         /* initialization */
  98
  99         key->type = REG_KEY_GENERIC;
 100
 101         if (name[0] == '\0') {
 102                 /*
 103                  * Open a copy of the parent key
 104                  */
 105                 if (!parent) {
 106                         result = WERR_BADFILE;
 107                         goto done;
 108                 }
 109                 key->name = talloc_strdup(key, parent->key->name);
 110         }
 111         else {
 112                 /*
 113                  * Normal subkey open
 114                  */
 115                 key->name = talloc_asprintf(key, "%s%s%s",
 116                                             parent ? parent->key->name : "",
 117                                             parent ? "\\": "",
 118                                             name);
 119         }
 120
 121         if (key->name == NULL) {
 122                 result = WERR_NOMEM;
 123                 goto done;
 124         }
 125
 126         /* Tag this as a Performance Counter Key */
 127
 128         if( StrnCaseCmp(key->name, KEY_HKPD, strlen(KEY_HKPD)) == 0 )
 129                 key->type = REG_KEY_HKPD;
 130
 131         /* Look up the table of registry I/O operations */
 132
 133         if ( !(key->hook = reghook_cache_find( key->name )) ) {
 134                 DEBUG(0,("reg_open_onelevel: Failed to assigned a "
 135                          "REGISTRY_HOOK to [%s]\n", key->name ));
 136                 result = WERR_BADFILE;
 137                 goto done;
 138         }
 139
 140         /* check if the path really exists; failed is indicated by -1 */
 141         /* if the subkey count failed, bail out */
 142
 143         if ( !(subkeys = TALLOC_ZERO_P( key, REGSUBKEY_CTR )) ) {
 144                 result = WERR_NOMEM;
 145                 goto done;
 146         }
 147
 148         if ( fetch_reg_keys( key, subkeys ) == -1 )  {
 149                 result = WERR_BADFILE;
 150                 goto done;
 151         }
 152
 153         TALLOC_FREE( subkeys );
 154
 155         if ( !regkey_access_check( key, access_desired, &key->access_granted,
 156                                    token ) ) {
 157                 result = WERR_ACCESS_DENIED;
 158                 goto done;
 159         }
 160
 161         *pregkey = regkey;
 162         result = WERR_OK;
 163
 164 done:
 165         if ( !W_ERROR_IS_OK(result) ) {
 166                 TALLOC_FREE(regkey);
 167         }
 168
 169         return result;
 170 }
 171
 172 WERROR reg_openhive(TALLOC_CTX *mem_ctx, const char *hive,
 173                     uint32 desired_access,
 174                     const struct nt_user_token *token,
 175                     struct registry_key **pkey)
 176 {
 177         SMB_ASSERT(hive != NULL);
 178         SMB_ASSERT(hive[0] != '\0');
 179         SMB_ASSERT(strchr(hive, '\\') == NULL);
 180
 181         return regkey_open_onelevel(mem_ctx, NULL, hive, token, desired_access,
 182                                     pkey);
 183 }
 184
 185 WERROR reg_openkey(TALLOC_CTX *mem_ctx, struct registry_key *parent,
 186                    const char *name, uint32 desired_access,
 187                    struct registry_key **pkey)
 188 {
 189         struct registry_key *direct_parent = parent;
 190         WERROR err;
 191         char *p, *path, *to_free;
 192         size_t len;
 193
 194         if (!(path = SMB_STRDUP(name))) {
 195                 return WERR_NOMEM;
 196         }
 197         to_free = path;
 198
 199         len = strlen(path);
 200
 201         if ((len > 0) && (path[len-1] == '\\')) {
 202                 path[len-1] = '\0';
 203         }
 204
 205         while ((p = strchr(path, '\\')) != NULL) {
 206                 char *name_component;
 207                 struct registry_key *tmp;
 208
 209                 if (!(name_component = SMB_STRNDUP(path, (p - path)))) {
 210                         err = WERR_NOMEM;
 211                         goto error;
 212                 }
 213
 214                 err = regkey_open_onelevel(mem_ctx, direct_parent,
 215                                            name_component, parent->token,
 216                                            SEC_RIGHTS_ENUM_SUBKEYS, &tmp);
 217                 SAFE_FREE(name_component);
 218
 219                 if (!W_ERROR_IS_OK(err)) {
 220                         goto error;
 221                 }
 222                 if (direct_parent != parent) {
 223                         TALLOC_FREE(direct_parent);
 224                 }
 225
 226                 direct_parent = tmp;
 227                 path = p+1;
 228         }
 229
 230         err = regkey_open_onelevel(mem_ctx, direct_parent, path, parent->token,
 231                                    desired_access, pkey);
 232  error:
 233         if (direct_parent != parent) {
 234                 TALLOC_FREE(direct_parent);
 235         }
 236         SAFE_FREE(to_free);
 237         return err;
 238 }
 239
 240 WERROR reg_enumkey(TALLOC_CTX *mem_ctx, struct registry_key *key,
 241                    uint32 idx, char **name, NTTIME *last_write_time)
 242 {
 243         WERROR err;
 244
 245         if (!(key->key->access_granted & SEC_RIGHTS_ENUM_SUBKEYS)) {
 246                 return WERR_ACCESS_DENIED;
 247         }
 248
 249         if (!W_ERROR_IS_OK(err = fill_subkey_cache(key))) {
 250                 return err;
 251         }
 252
 253         if (idx >= key->subkeys->num_subkeys) {
 254                 return WERR_NO_MORE_ITEMS;
 255         }
 256
 257         if (!(*name = talloc_strdup(mem_ctx, key->subkeys->subkeys[idx]))) {
 258                 return WERR_NOMEM;
 259         }
 260
 261         if (last_write_time) {
 262                 *last_write_time = 0;
 263         }
 264
 265         return WERR_OK;
 266 }
 267
 268 WERROR reg_enumvalue(TALLOC_CTX *mem_ctx, struct registry_key *key,
 269                      uint32 idx, char **pname, struct registry_value **pval)
 270 {
 271         struct registry_value *val;
 272         WERROR err;
 273
 274         if (!(key->key->access_granted & SEC_RIGHTS_QUERY_VALUE)) {
 275                 return WERR_ACCESS_DENIED;
 276         }
 277
 278         if (!(W_ERROR_IS_OK(err = fill_value_cache(key)))) {
 279                 return err;
 280         }
 281
 282         if (idx >= key->values->num_values) {
 283                 return WERR_NO_MORE_ITEMS;
 284         }
 285
 286         err = registry_pull_value(mem_ctx, &val,
 287                                   key->values->values[idx]->type,
 288                                   key->values->values[idx]->data_p,
 289                                   key->values->values[idx]->size,
 290                                   key->values->values[idx]->size);
 291         if (!W_ERROR_IS_OK(err)) {
 292                 return err;
 293         }
 294
 295         if (pname
 296             && !(*pname = talloc_strdup(
 297                          mem_ctx, key->values->values[idx]->valuename))) {
 298                 SAFE_FREE(val);
 299                 return WERR_NOMEM;
 300         }
 301
 302         *pval = val;
 303         return WERR_OK;
 304 }
 305
 306 WERROR reg_queryvalue(TALLOC_CTX *mem_ctx, struct registry_key *key,
 307                       const char *name, struct registry_value **pval)
 308 {
 309         WERROR err;
 310         uint32 i;
 311
 312         if (!(key->key->access_granted & SEC_RIGHTS_QUERY_VALUE)) {
 313                 return WERR_ACCESS_DENIED;
 314         }
 315
 316         if (!(W_ERROR_IS_OK(err = fill_value_cache(key)))) {
 317                 return err;
 318         }
 319
 320         for (i=0; i<key->values->num_values; i++) {
 321                 if (strequal(key->values->values[i]->valuename, name)) {
 322                         return reg_enumvalue(mem_ctx, key, i, NULL, pval);
 323                 }
 324         }
 325
 326         return WERR_BADFILE;
 327 }
 328
 329 WERROR reg_queryinfokey(struct registry_key *key, uint32_t *num_subkeys,
 330                         uint32_t *max_subkeylen, uint32_t *max_subkeysize,
 331                         uint32_t *num_values, uint32_t *max_valnamelen,
 332                         uint32_t *max_valbufsize, uint32_t *secdescsize,
 333                         NTTIME *last_changed_time)
 334 {
 335         uint32 i, max_size;
 336         size_t max_len;
 337         TALLOC_CTX *mem_ctx;
 338         WERROR err;
 339         struct security_descriptor *secdesc;
 340
 341         if (!(key->key->access_granted & SEC_RIGHTS_QUERY_VALUE)) {
 342                 return WERR_ACCESS_DENIED;
 343         }
 344
 345         if (!W_ERROR_IS_OK(fill_subkey_cache(key)) ||
 346             !W_ERROR_IS_OK(fill_value_cache(key))) {
 347                 return WERR_BADFILE;
 348         }
 349
 350         max_len = 0;
 351         for (i=0; i<key->subkeys->num_subkeys; i++) {
 352                 max_len = MAX(max_len, strlen(key->subkeys->subkeys[i]));
 353         }
 354
 355         *num_subkeys = key->subkeys->num_subkeys;
 356         *max_subkeylen = max_len;
 357         *max_subkeysize = 0;    /* Class length? */
 358
 359         max_len = 0;
 360         max_size = 0;
 361         for (i=0; i<key->values->num_values; i++) {
 362                 max_len = MAX(max_len,
 363                               strlen(key->values->values[i]->valuename));
 364                 max_size = MAX(max_size, key->values->values[i]->size);
 365         }
 366
 367         *num_values = key->values->num_values;
 368         *max_valnamelen = max_len;
 369         *max_valbufsize = max_size;
 370
 371         if (!(mem_ctx = talloc_new(key))) {
 372                 return WERR_NOMEM;
 373         }
 374
 375         err = regkey_get_secdesc(mem_ctx, key->key, &secdesc);
 376         if (!W_ERROR_IS_OK(err)) {
 377                 TALLOC_FREE(mem_ctx);
 378                 return err;
 379         }
 380
 381         *secdescsize = sec_desc_size(secdesc);
 382         TALLOC_FREE(mem_ctx);
 383
 384         *last_changed_time = 0;
 385
 386         return WERR_OK;
 387 }
 388
 389 WERROR reg_createkey(TALLOC_CTX *ctx, struct registry_key *parent,
 390                      const char *subkeypath, uint32 desired_access,
 391                      struct registry_key **pkey,
 392                      enum winreg_CreateAction *paction)
 393 {
 394         struct registry_key *key = parent;
 395         struct registry_key *create_parent;
 396         TALLOC_CTX *mem_ctx;
 397         char *path, *end;
 398         WERROR err;
 399         REGSUBKEY_CTR *subkeys;
 400
 401         if (!(mem_ctx = talloc_new(ctx))) return WERR_NOMEM;
 402
 403         if (!(path = talloc_strdup(mem_ctx, subkeypath))) {
 404                 err = WERR_NOMEM;
 405                 goto done;
 406         }
 407
 408         while ((end = strchr(path, '\\')) != NULL) {
 409                 struct registry_key *tmp;
 410                 enum winreg_CreateAction action;
 411
 412                 *end = '\0';
 413
 414                 err = reg_createkey(mem_ctx, key, path,
 415                                     SEC_RIGHTS_ENUM_SUBKEYS, &tmp, &action);
 416                 if (!W_ERROR_IS_OK(err)) {
 417                         goto done;
 418                 }
 419
 420                 if (key != parent) {
 421                         TALLOC_FREE(key);
 422                 }
 423
 424                 key = tmp;
 425                 path = end+1;
 426         }
 427
 428         /*
 429          * At this point, "path" contains the one-element subkey of "key". We
 430          * can try to open it.
 431          */
 432
 433         err = reg_openkey(ctx, key, path, desired_access, pkey);
 434         if (W_ERROR_IS_OK(err)) {
 435                 if (paction != NULL) {
 436                         *paction = REG_OPENED_EXISTING_KEY;
 437                 }
 438                 goto done;
 439         }
 440
 441         if (!W_ERROR_EQUAL(err, WERR_BADFILE)) {
 442                 /*
 443                  * Something but "notfound" has happened, so bail out
 444                  */
 445                 goto done;
 446         }
 447
 448         /*
 449          * We have to make a copy of the current key, as we opened it only
 450          * with ENUM_SUBKEY access.
 451          */
 452
 453         err = reg_openkey(mem_ctx, key, "", SEC_RIGHTS_CREATE_SUBKEY,
 454                           &create_parent);
 455         if (!W_ERROR_IS_OK(err)) {
 456                 goto done;
 457         }
 458
 459         /*
 460          * Actually create the subkey
 461          */
 462
 463         if (!(subkeys = TALLOC_ZERO_P(mem_ctx, REGSUBKEY_CTR))) {
 464                 err = WERR_NOMEM;
 465                 goto done;
 466         }
 467
 468         err = fill_subkey_cache(create_parent);
 469         if (!W_ERROR_IS_OK(err)) goto done;
 470
 471         err = regsubkey_ctr_addkey(create_parent->subkeys, path);
 472         if (!W_ERROR_IS_OK(err)) goto done;
 473
 474         if (!store_reg_keys(create_parent->key, create_parent->subkeys)) {
 475                 TALLOC_FREE(create_parent->subkeys);
 476                 err = WERR_REG_IO_FAILURE;
 477                 goto done;
 478         }
 479
 480         /*
 481          * Now open the newly created key
 482          */
 483
 484         err = reg_openkey(ctx, create_parent, path, desired_access, pkey);
 485         if (W_ERROR_IS_OK(err) && (paction != NULL)) {
 486                 *paction = REG_CREATED_NEW_KEY;
 487         }
 488
 489  done:
 490         TALLOC_FREE(mem_ctx);
 491         return err;
 492 }
 493
 494
 495 WERROR reg_deletekey(struct registry_key *parent, const char *path)
 496 {
 497         WERROR err;
 498         TALLOC_CTX *mem_ctx;
 499         char *name, *end;
 500         int num_subkeys;
 501         struct registry_key *tmp_key, *key;
 502
 503         if (!(mem_ctx = talloc_init("reg_createkey"))) return WERR_NOMEM;
 504
 505         if (!(name = talloc_strdup(mem_ctx, path))) {
 506                 err = WERR_NOMEM;
 507                 goto error;
 508         }
 509
 510         /* check if the key has subkeys */
 511         err = reg_openkey(mem_ctx, parent, name, REG_KEY_READ, &key);
 512         if (!W_ERROR_IS_OK(err)) {
 513                 goto error;
 514         }
 515         if (!W_ERROR_IS_OK(err = fill_subkey_cache(key))) {
 516                 goto error;
 517         }
 518         if (key->subkeys->num_subkeys > 0) {
 519                 err = WERR_ACCESS_DENIED;
 520                 goto error;
 521         }
 522
 523         /* no subkeys - proceed with delete */
 524         if ((end = strrchr(name, '\\')) != NULL) {
 525                 *end = '\0';
 526
 527                 err = reg_openkey(mem_ctx, parent, name,
 528                                   SEC_RIGHTS_CREATE_SUBKEY, &tmp_key);
 529                 if (!W_ERROR_IS_OK(err)) {
 530                         goto error;
 531                 }
 532
 533                 parent = tmp_key;
 534                 name = end+1;
 535         }
 536
 537         if (name[0] == '\0') {
 538                 err = WERR_INVALID_PARAM;
 539                 goto error;
 540         }
 541
 542         if (!W_ERROR_IS_OK(err = fill_subkey_cache(parent))) {
 543                 goto error;
 544         }
 545
 546         num_subkeys = parent->subkeys->num_subkeys;
 547
 548         if (regsubkey_ctr_delkey(parent->subkeys, name) == num_subkeys) {
 549                 err = WERR_BADFILE;
 550                 goto error;
 551         }
 552
 553         if (!store_reg_keys(parent->key, parent->subkeys)) {
 554                 TALLOC_FREE(parent->subkeys);
 555                 err = WERR_REG_IO_FAILURE;
 556                 goto error;
 557         }
 558
 559         regkey_set_secdesc(key->key, NULL);
 560
 561         err = WERR_OK;
 562
 563  error:
 564         TALLOC_FREE(mem_ctx);
 565         return err;
 566 }
 567
 568 WERROR reg_setvalue(struct registry_key *key, const char *name,
 569                     const struct registry_value *val)
 570 {
 571         WERROR err;
 572         DATA_BLOB value_data;
 573         int res;
 574
 575         if (!(key->key->access_granted & SEC_RIGHTS_SET_VALUE)) {
 576                 return WERR_ACCESS_DENIED;
 577         }
 578
 579         if (!W_ERROR_IS_OK(err = fill_value_cache(key))) {
 580                 return err;
 581         }
 582
 583         err = registry_push_value(key, val, &value_data);
 584         if (!W_ERROR_IS_OK(err)) {
 585                 return err;
 586         }
 587
 588         res = regval_ctr_addvalue(key->values, name, val->type,
 589                                   (char *)value_data.data, value_data.length);
 590         TALLOC_FREE(value_data.data);
 591
 592         if (res == 0) {
 593                 TALLOC_FREE(key->values);
 594                 return WERR_NOMEM;
 595         }
 596
 597         if (!store_reg_values(key->key, key->values)) {
 598                 TALLOC_FREE(key->values);
 599                 return WERR_REG_IO_FAILURE;
 600         }
 601
 602         return WERR_OK;
 603 }
 604
 605 WERROR reg_deletevalue(struct registry_key *key, const char *name)
 606 {
 607         WERROR err;
 608
 609         if (!(key->key->access_granted & SEC_RIGHTS_SET_VALUE)) {
 610                 return WERR_ACCESS_DENIED;
 611         }
 612
 613         if (!W_ERROR_IS_OK(err = fill_value_cache(key))) {
 614                 return err;
 615         }
 616
 617         regval_ctr_delvalue(key->values, name);
 618
 619         if (!store_reg_values(key->key, key->values)) {
 620                 TALLOC_FREE(key->values);
 621                 return WERR_REG_IO_FAILURE;
 622         }
 623
 624         return WERR_OK;
 625 }
 626
 627 WERROR reg_deleteallvalues(struct registry_key *key)
 628 {
 629         WERROR err;
 630         int i;
 631
 632         if (!(key->key->access_granted & SEC_RIGHTS_SET_VALUE)) {
 633                 return WERR_ACCESS_DENIED;
 634         }
 635
 636         if (!W_ERROR_IS_OK(err = fill_value_cache(key))) {
 637                 return err;
 638         }
 639
 640         for (i=0; i<key->values->num_values; i++) {
 641                 regval_ctr_delvalue(key->values, key->values->values[i]->valuename);
 642         }
 643
 644         if (!store_reg_values(key->key, key->values)) {
 645                 TALLOC_FREE(key->values);
 646                 return WERR_REG_IO_FAILURE;
 647         }
 648
 649         return WERR_OK;
 650 }
 651
 652 /*
 653  * Utility function to open a complete registry path including the hive
 654  * prefix. This should become the replacement function for
 655  * regkey_open_internal.
 656  */
 657
 658 WERROR reg_open_path(TALLOC_CTX *mem_ctx, const char *orig_path,
 659                      uint32 desired_access, const struct nt_user_token *token,
 660                      struct registry_key **pkey)
 661 {
 662         struct registry_key *hive, *key;
 663         char *path, *p;
 664         WERROR err;
 665
 666         if (!(path = SMB_STRDUP(orig_path))) {
 667                 return WERR_NOMEM;
 668         }
 669
 670         p = strchr(path, '\\');
 671
 672         if ((p == NULL) || (p[1] == '\0')) {
 673                 /*
 674                  * No key behind the hive, just return the hive
 675                  */
 676
 677                 err = reg_openhive(mem_ctx, path, desired_access, token,
 678                                    &hive);
 679                 if (!W_ERROR_IS_OK(err)) {
 680                         SAFE_FREE(path);
 681                         return err;
 682                 }
 683                 SAFE_FREE(path);
 684                 *pkey = hive;
 685                 return WERR_OK;
 686         }
 687
 688         *p = '\0';
 689
 690         err = reg_openhive(mem_ctx, path, SEC_RIGHTS_ENUM_SUBKEYS, token,
 691                            &hive);
 692         if (!W_ERROR_IS_OK(err)) {
 693                 SAFE_FREE(path);
 694                 return err;
 695         }
 696
 697         err = reg_openkey(mem_ctx, hive, p+1, desired_access, &key);
 698
 699         TALLOC_FREE(hive);
 700         SAFE_FREE(path);
 701
 702         if (!W_ERROR_IS_OK(err)) {
 703                 return err;
 704         }
 705
 706         *pkey = key;
 707         return WERR_OK;
 708 }
 709
 710 /*
 711  * Utility function to delete a registry key with all its subkeys.
 712  * Note that reg_deletekey returns ACCESS_DENIED when called on a
 713  * key that has subkeys.
 714  */
 715 WERROR reg_deletekey_recursive_internal(TALLOC_CTX *ctx,
 716                                         struct registry_key *parent,
 717                                         const char *path,
 718                                         bool del_key)
 719 {
 720         TALLOC_CTX *mem_ctx = NULL;
 721         WERROR werr = WERR_OK;
 722         struct registry_key *key;
 723         char *subkey_name = NULL;
 724
 725         mem_ctx = talloc_new(ctx);
 726         if (mem_ctx == NULL) {
 727                 werr = WERR_NOMEM;
 728                 goto done;
 729         }
 730
 731         /* recurse through subkeys first */
 732         werr = reg_openkey(mem_ctx, parent, path, REG_KEY_WRITE, &key);
 733         if (!W_ERROR_IS_OK(werr)) {
 734                 goto done;
 735         }
 736
 737         while (W_ERROR_IS_OK(werr = reg_enumkey(mem_ctx, key, 0,
 738                                                 &subkey_name, NULL)))
 739         {
 740                 werr = reg_deletekey_recursive_internal(mem_ctx, key,
 741                                                         subkey_name,
 742                                                         True);
 743                 if (!W_ERROR_IS_OK(werr)) {
 744                         goto done;
 745                 }
 746         }
 747         if (!W_ERROR_EQUAL(WERR_NO_MORE_ITEMS, werr)) {
 748                 DEBUG(1, ("reg_deletekey_recursive_internal: "
 749                           "Error enumerating subkeys: %s\n",
 750                           dos_errstr(werr)));
 751                 goto done;
 752         }
 753
 754         werr = WERR_OK;
 755
 756         if (del_key) {
 757                 /* now delete the actual key */
 758                 werr = reg_deletekey(parent, path);
 759         }
 760
 761 done:
 762         TALLOC_FREE(mem_ctx);
 763         return werr;
 764 }
 765
 766 WERROR reg_deletekey_recursive(TALLOC_CTX *ctx,
 767                                struct registry_key *parent,
 768                                const char *path)
 769 {
 770         return reg_deletekey_recursive_internal(ctx, parent, path, True);
 771 }
 772
 773 WERROR reg_deletesubkeys_recursive(TALLOC_CTX *ctx,
 774                                    struct registry_key *parent,
 775                                    const char *path)
 776 {
 777         return reg_deletekey_recursive_internal(ctx, parent, path, False);
 778 }