2 Unix SMB/CIFS implementation.
4 Copyright (C) 2004-2007, Jelmer Vernooij, jelmer@samba.org
5 Copyright (C) 2008-2010, Matthias Dieter Wallnöfer, mdw@samba.org
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "lib/ldb/include/ldb.h"
24 #include "lib/ldb/include/ldb_errors.h"
26 #include "librpc/gen_ndr/winreg.h"
27 #include "param/param.h"
29 static struct hive_operations reg_backend_ldb;
34 struct ldb_context *ldb;
36 struct ldb_message **subkeys, **values;
37 unsigned int subkey_count, value_count;
38 const char *classname;
41 static void reg_ldb_unpack_value(TALLOC_CTX *mem_ctx,
42 struct ldb_message *msg,
43 const char **name, uint32_t *type,
46 const struct ldb_val *val;
50 *name = talloc_strdup(mem_ctx,
51 ldb_msg_find_attr_as_string(msg, "value",
55 value_type = ldb_msg_find_attr_as_uint(msg, "type", 0);
58 val = ldb_msg_find_ldb_val(msg, "data");
65 /* The data should be provided as UTF16 string */
66 convert_string_talloc(mem_ctx, CH_UTF8, CH_UTF16,
67 val->data, val->length,
68 (void **)&data->data, &data->length, false);
76 case REG_DWORD_BIG_ENDIAN:
78 /* The data is a plain DWORD */
79 uint32_t tmp = strtoul((char *)val->data, NULL, 0);
80 data->data = talloc_size(mem_ctx, sizeof(uint32_t));
81 if (data->data != NULL) {
82 SIVAL(data->data, 0, tmp);
84 data->length = sizeof(uint32_t);
93 /* The data is a plain QWORD */
94 uint64_t tmp = strtoull((char *)val->data, NULL, 0);
95 data->data = talloc_size(mem_ctx, sizeof(uint64_t));
96 if (data->data != NULL) {
97 SBVAL(data->data, 0, tmp);
99 data->length = sizeof(uint64_t);
109 data->data = talloc_memdup(mem_ctx, val->data,
111 data->length = val->length;
120 static struct ldb_message *reg_ldb_pack_value(struct ldb_context *ctx,
123 uint32_t type, DATA_BLOB data)
125 struct ldb_message *msg;
126 char *name_dup, *type_str;
129 msg = talloc_zero(mem_ctx, struct ldb_message);
134 name_dup = talloc_strdup(msg, name);
135 if (name_dup == NULL) {
140 ret = ldb_msg_add_string(msg, "value", name_dup);
141 if (ret != LDB_SUCCESS) {
149 if ((data.length > 0) && (data.data != NULL)) {
153 val = talloc_zero(msg, struct ldb_val);
159 /* The data is provided as UTF16 string */
160 ret2 = convert_string_talloc(mem_ctx, CH_UTF16, CH_UTF8,
161 (void *)data.data, data.length,
162 (void **)&val->data, &val->length,
165 ret = ldb_msg_add_value(msg, "data", val, NULL);
167 /* workaround for non-standard data */
168 ret = ldb_msg_add_empty(msg, "data", LDB_FLAG_MOD_DELETE, NULL);
171 ret = ldb_msg_add_empty(msg, "data", LDB_FLAG_MOD_DELETE, NULL);
176 case REG_DWORD_BIG_ENDIAN:
177 if ((data.length > 0) && (data.data != NULL)) {
178 if (data.length == sizeof(uint32_t)) {
181 conv_str = talloc_asprintf(msg, "0x%8.8x",
183 if (conv_str == NULL) {
187 ret = ldb_msg_add_string(msg, "data", conv_str);
189 /* workaround for non-standard data */
194 ret = ldb_msg_add_empty(msg, "data", LDB_FLAG_MOD_DELETE, NULL);
199 if ((data.length > 0) && (data.data != NULL)) {
200 if (data.length == sizeof(uint64_t)) {
203 conv_str = talloc_asprintf(msg, "0x%16.16llx",
205 if (conv_str == NULL) {
209 ret = ldb_msg_add_string(msg, "data", conv_str);
211 /* workaround for non-standard data */
217 ret = ldb_msg_add_empty(msg, "data", LDB_FLAG_MOD_DELETE, NULL);
223 if ((data.length > 0) && (data.data != NULL)) {
224 ret = ldb_msg_add_value(msg, "data", &data, NULL);
226 ret = ldb_msg_add_empty(msg, "data", LDB_FLAG_MOD_DELETE, NULL);
231 if (ret != LDB_SUCCESS) {
236 type_str = talloc_asprintf(mem_ctx, "%u", type);
237 if (type_str == NULL) {
242 ret = ldb_msg_add_string(msg, "type", type_str);
243 if (ret != LDB_SUCCESS) {
251 static char *reg_ldb_escape(TALLOC_CTX *mem_ctx, const char *value)
255 val.data = discard_const_p(uint8_t, value);
256 val.length = strlen(value);
258 return ldb_dn_escape_value(mem_ctx, val);
261 static int reg_close_ldb_key(struct ldb_key_data *key)
263 if (key->subkeys != NULL) {
264 talloc_free(key->subkeys);
268 if (key->values != NULL) {
269 talloc_free(key->values);
275 static struct ldb_dn *reg_path_to_ldb(TALLOC_CTX *mem_ctx,
276 const struct hive_key *from,
277 const char *path, const char *add)
282 struct ldb_key_data *kd = talloc_get_type(from, struct ldb_key_data);
283 struct ldb_context *ldb = kd->ldb;
285 mypath = talloc_strdup(mem_ctx, path);
286 if (mypath == NULL) {
290 ret = ldb_dn_new(mem_ctx, ldb, add);
291 if (!ldb_dn_validate(ret)) {
296 if (!ldb_dn_add_base(ret, kd->dn)) {
301 while (mypath[0] != '\0') {
302 begin = strchr(mypath, '\\');
307 if (!ldb_dn_add_child_fmt(ret, "key=%s",
308 reg_ldb_escape(mem_ctx, mypath))) {
323 static WERROR cache_subkeys(struct ldb_key_data *kd)
325 struct ldb_context *c = kd->ldb;
326 struct ldb_result *res;
329 ret = ldb_search(c, c, &res, kd->dn, LDB_SCOPE_ONELEVEL,
331 if (ret != LDB_SUCCESS) {
332 DEBUG(0, ("Error getting subkeys for '%s': %s\n",
333 ldb_dn_get_linearized(kd->dn), ldb_errstring(c)));
337 kd->subkey_count = res->count;
338 kd->subkeys = talloc_steal(kd, res->msgs);
344 static WERROR cache_values(struct ldb_key_data *kd)
346 struct ldb_context *c = kd->ldb;
347 struct ldb_result *res;
350 ret = ldb_search(c, c, &res, kd->dn, LDB_SCOPE_ONELEVEL,
352 if (ret != LDB_SUCCESS) {
353 DEBUG(0, ("Error getting values for '%s': %s\n",
354 ldb_dn_get_linearized(kd->dn), ldb_errstring(c)));
358 kd->value_count = res->count;
359 kd->values = talloc_steal(kd, res->msgs);
366 static WERROR ldb_get_subkey_by_id(TALLOC_CTX *mem_ctx,
367 const struct hive_key *k, uint32_t idx,
369 const char **classname,
370 NTTIME *last_mod_time)
372 struct ldb_key_data *kd = talloc_get_type(k, struct ldb_key_data);
377 if (classname != NULL)
379 if (last_mod_time != NULL)
380 *last_mod_time = 0; /* TODO: we need to add this to the
381 ldb backend properly */
383 /* Do a search if necessary */
384 if (kd->subkeys == NULL) {
385 W_ERROR_NOT_OK_RETURN(cache_subkeys(kd));
388 if (idx >= kd->subkey_count)
389 return WERR_NO_MORE_ITEMS;
392 *name = talloc_strdup(mem_ctx,
393 ldb_msg_find_attr_as_string(kd->subkeys[idx], "key", NULL));
394 if (classname != NULL)
395 *classname = talloc_strdup(mem_ctx,
396 ldb_msg_find_attr_as_string(kd->subkeys[idx], "classname", NULL));
401 static WERROR ldb_get_default_value(TALLOC_CTX *mem_ctx,
402 const struct hive_key *k,
403 const char **name, uint32_t *data_type,
406 struct ldb_key_data *kd = talloc_get_type(k, struct ldb_key_data);
407 struct ldb_context *c = kd->ldb;
408 const char* attrs[] = { "data", "type", NULL };
409 struct ldb_result *res;
412 ret = ldb_search(c, mem_ctx, &res, kd->dn, LDB_SCOPE_BASE, attrs, "(dn=*)");
414 if (ret != LDB_SUCCESS) {
415 DEBUG(0, ("Error getting default value for '%s': %s\n",
416 ldb_dn_get_linearized(kd->dn), ldb_errstring(c)));
420 if (res->count == 0 || res->msgs[0]->num_elements == 0) {
425 if ((data_type != NULL) && (data != NULL)) {
426 reg_ldb_unpack_value(mem_ctx, res->msgs[0], name, data_type,
435 static WERROR ldb_get_value_by_id(TALLOC_CTX *mem_ctx, struct hive_key *k,
436 uint32_t idx, const char **name,
437 uint32_t *data_type, DATA_BLOB *data)
439 struct ldb_key_data *kd = talloc_get_type(k, struct ldb_key_data);
441 /* if the default value exists, give it back */
442 if (W_ERROR_IS_OK(ldb_get_default_value(mem_ctx, k, name, data_type,
450 /* Do the search if necessary */
451 if (kd->values == NULL) {
452 W_ERROR_NOT_OK_RETURN(cache_values(kd));
455 if (idx >= kd->value_count)
456 return WERR_NO_MORE_ITEMS;
458 reg_ldb_unpack_value(mem_ctx, kd->values[idx], name, data_type, data);
463 static WERROR ldb_get_value(TALLOC_CTX *mem_ctx, struct hive_key *k,
464 const char *name, uint32_t *data_type,
467 struct ldb_key_data *kd = talloc_get_type(k, struct ldb_key_data);
468 const char *res_name;
471 /* the default value was requested, give it back */
472 if (name[0] == '\0') {
473 return ldb_get_default_value(mem_ctx, k, NULL, data_type, data);
476 /* Do the search if necessary */
477 if (kd->values == NULL) {
478 W_ERROR_NOT_OK_RETURN(cache_values(kd));
481 for (idx = 0; idx < kd->value_count; idx++) {
482 res_name = ldb_msg_find_attr_as_string(kd->values[idx], "value",
484 if (ldb_attr_cmp(name, res_name) == 0) {
485 reg_ldb_unpack_value(mem_ctx, kd->values[idx], NULL,
494 static WERROR ldb_open_key(TALLOC_CTX *mem_ctx, const struct hive_key *h,
495 const char *name, struct hive_key **key)
497 struct ldb_result *res;
498 struct ldb_dn *ldb_path;
500 struct ldb_key_data *newkd;
501 struct ldb_key_data *kd = talloc_get_type(h, struct ldb_key_data);
502 struct ldb_context *c = kd->ldb;
504 ldb_path = reg_path_to_ldb(mem_ctx, h, name, NULL);
505 W_ERROR_HAVE_NO_MEMORY(ldb_path);
507 ret = ldb_search(c, mem_ctx, &res, ldb_path, LDB_SCOPE_BASE, NULL, "(key=*)");
509 if (ret != LDB_SUCCESS) {
510 DEBUG(3, ("Error opening key '%s': %s\n",
511 ldb_dn_get_linearized(ldb_path), ldb_errstring(c)));
513 } else if (res->count == 0) {
514 DEBUG(3, ("Key '%s' not found\n",
515 ldb_dn_get_linearized(ldb_path)));
520 newkd = talloc_zero(mem_ctx, struct ldb_key_data);
521 W_ERROR_HAVE_NO_MEMORY(newkd);
522 newkd->key.ops = ®_backend_ldb;
523 newkd->ldb = talloc_reference(newkd, kd->ldb);
524 newkd->dn = ldb_dn_copy(newkd, res->msgs[0]->dn);
525 newkd->classname = talloc_steal(newkd,
526 ldb_msg_find_attr_as_string(res->msgs[0], "classname", NULL));
530 *key = (struct hive_key *)newkd;
535 WERROR reg_open_ldb_file(TALLOC_CTX *parent_ctx, const char *location,
536 struct auth_session_info *session_info,
537 struct cli_credentials *credentials,
538 struct tevent_context *ev_ctx,
539 struct loadparm_context *lp_ctx,
542 struct ldb_key_data *kd;
543 struct ldb_context *wrap;
544 struct ldb_message *attrs_msg;
546 if (location == NULL)
547 return WERR_INVALID_PARAM;
549 wrap = ldb_wrap_connect(parent_ctx, ev_ctx, lp_ctx,
550 location, session_info, credentials, 0);
553 DEBUG(1, (__FILE__": unable to connect\n"));
557 attrs_msg = ldb_msg_new(wrap);
558 W_ERROR_HAVE_NO_MEMORY(attrs_msg);
559 attrs_msg->dn = ldb_dn_new(attrs_msg, wrap, "@ATTRIBUTES");
560 W_ERROR_HAVE_NO_MEMORY(attrs_msg->dn);
561 ldb_msg_add_string(attrs_msg, "key", "CASE_INSENSITIVE");
562 ldb_msg_add_string(attrs_msg, "value", "CASE_INSENSITIVE");
564 ldb_add(wrap, attrs_msg);
566 ldb_set_debug_stderr(wrap);
568 kd = talloc_zero(parent_ctx, struct ldb_key_data);
569 kd->key.ops = ®_backend_ldb;
570 kd->ldb = talloc_reference(kd, wrap);
571 talloc_set_destructor (kd, reg_close_ldb_key);
572 kd->dn = ldb_dn_new(kd, wrap, "hive=NONE");
574 *k = (struct hive_key *)kd;
579 static WERROR ldb_add_key(TALLOC_CTX *mem_ctx, const struct hive_key *parent,
580 const char *name, const char *classname,
581 struct security_descriptor *sd,
582 struct hive_key **newkey)
584 struct ldb_key_data *parentkd = discard_const_p(struct ldb_key_data, parent);
585 struct ldb_dn *ldb_path;
586 struct ldb_message *msg;
587 struct ldb_key_data *newkd;
590 ldb_path = reg_path_to_ldb(mem_ctx, parent, name, NULL);
591 W_ERROR_HAVE_NO_MEMORY(ldb_path);
593 msg = ldb_msg_new(mem_ctx);
594 W_ERROR_HAVE_NO_MEMORY(msg);
598 ldb_msg_add_string(msg, "key", name);
599 if (classname != NULL) {
600 ldb_msg_add_string(msg, "classname", classname);
603 ret = ldb_add(parentkd->ldb, msg);
607 if (ret == LDB_ERR_ENTRY_ALREADY_EXISTS) {
608 return WERR_ALREADY_EXISTS;
611 if (ret != LDB_SUCCESS) {
612 DEBUG(1, ("ldb_add: %s\n", ldb_errstring(parentkd->ldb)));
616 DEBUG(2, ("key added: %s\n", ldb_dn_get_linearized(ldb_path)));
618 newkd = talloc_zero(mem_ctx, struct ldb_key_data);
619 W_ERROR_HAVE_NO_MEMORY(newkd);
620 newkd->ldb = talloc_reference(newkd, parentkd->ldb);
621 newkd->key.ops = ®_backend_ldb;
622 newkd->dn = talloc_steal(newkd, ldb_path);
623 newkd->classname = talloc_steal(newkd, classname);
625 *newkey = (struct hive_key *)newkd;
628 talloc_free(parentkd->subkeys);
629 parentkd->subkeys = NULL;
634 static WERROR ldb_del_value(TALLOC_CTX *mem_ctx, struct hive_key *key,
638 struct ldb_key_data *kd = talloc_get_type(key, struct ldb_key_data);
639 struct ldb_message *msg;
640 struct ldb_dn *childdn;
642 if (child[0] == '\0') {
644 msg = talloc_zero(mem_ctx, struct ldb_message);
645 W_ERROR_HAVE_NO_MEMORY(msg);
646 msg->dn = ldb_dn_copy(msg, kd->dn);
647 W_ERROR_HAVE_NO_MEMORY(msg->dn);
648 ldb_msg_add_empty(msg, "data", LDB_FLAG_MOD_DELETE, NULL);
649 ldb_msg_add_empty(msg, "type", LDB_FLAG_MOD_DELETE, NULL);
651 ret = ldb_modify(kd->ldb, msg);
655 if (ret != LDB_SUCCESS) {
656 DEBUG(1, ("ldb_del_value: %s\n", ldb_errstring(kd->ldb)));
661 childdn = ldb_dn_copy(kd->ldb, kd->dn);
662 if (!ldb_dn_add_child_fmt(childdn, "value=%s",
663 reg_ldb_escape(childdn, child)))
665 talloc_free(childdn);
669 ret = ldb_delete(kd->ldb, childdn);
671 talloc_free(childdn);
673 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
675 } else if (ret != LDB_SUCCESS) {
676 DEBUG(1, ("ldb_del_value: %s\n", ldb_errstring(kd->ldb)));
682 talloc_free(kd->values);
688 static WERROR ldb_del_key(TALLOC_CTX *mem_ctx, const struct hive_key *key,
693 struct ldb_key_data *parentkd = talloc_get_type(key, struct ldb_key_data);
694 struct ldb_dn *ldb_path;
695 struct ldb_context *c = parentkd->ldb;
696 struct ldb_result *res_keys;
697 struct ldb_result *res_vals;
701 /* Verify key exists by opening it */
702 werr = ldb_open_key(mem_ctx, key, name, &hk);
703 if (!W_ERROR_IS_OK(werr)) {
707 ldb_path = reg_path_to_ldb(mem_ctx, key, name, NULL);
708 W_ERROR_HAVE_NO_MEMORY(ldb_path);
710 /* Search for subkeys */
711 ret = ldb_search(c, mem_ctx, &res_keys, ldb_path, LDB_SCOPE_ONELEVEL,
714 if (ret != LDB_SUCCESS) {
715 DEBUG(0, ("Error getting subkeys for '%s': %s\n",
716 ldb_dn_get_linearized(ldb_path), ldb_errstring(c)));
720 /* Search for values */
721 ret = ldb_search(c, mem_ctx, &res_vals, ldb_path, LDB_SCOPE_ONELEVEL,
724 if (ret != LDB_SUCCESS) {
725 DEBUG(0, ("Error getting values for '%s': %s\n",
726 ldb_dn_get_linearized(ldb_path), ldb_errstring(c)));
730 /* Start an explicit transaction */
731 ret = ldb_transaction_start(c);
733 if (ret != LDB_SUCCESS) {
734 DEBUG(0, ("ldb_transaction_start: %s\n", ldb_errstring(c)));
738 if (res_keys->count || res_vals->count)
740 /* Delete any subkeys */
741 for (i = 0; i < res_keys->count; i++)
743 werr = ldb_del_key(mem_ctx, hk,
744 ldb_msg_find_attr_as_string(
747 if (!W_ERROR_IS_OK(werr)) {
748 ret = ldb_transaction_cancel(c);
753 /* Delete any values */
754 for (i = 0; i < res_vals->count; i++)
756 werr = ldb_del_value(mem_ctx, hk,
757 ldb_msg_find_attr_as_string(
760 if (!W_ERROR_IS_OK(werr)) {
761 ret = ldb_transaction_cancel(c);
766 talloc_free(res_keys);
767 talloc_free(res_vals);
769 /* Delete the key itself */
770 ret = ldb_delete(c, ldb_path);
772 if (ret != LDB_SUCCESS)
774 DEBUG(1, ("ldb_del_key: %s\n", ldb_errstring(c)));
775 ret = ldb_transaction_cancel(c);
779 /* Commit the transaction */
780 ret = ldb_transaction_commit(c);
782 if (ret != LDB_SUCCESS)
784 DEBUG(0, ("ldb_transaction_commit: %s\n", ldb_errstring(c)));
785 ret = ldb_transaction_cancel(c);
790 talloc_free(parentkd->subkeys);
791 parentkd->subkeys = NULL;
796 static WERROR ldb_set_value(struct hive_key *parent,
797 const char *name, uint32_t type,
798 const DATA_BLOB data)
800 struct ldb_message *msg;
801 struct ldb_key_data *kd = talloc_get_type(parent, struct ldb_key_data);
804 TALLOC_CTX *mem_ctx = talloc_init("ldb_set_value");
806 msg = reg_ldb_pack_value(kd->ldb, mem_ctx, name, type, data);
807 W_ERROR_HAVE_NO_MEMORY(msg);
809 msg->dn = ldb_dn_copy(msg, kd->dn);
810 W_ERROR_HAVE_NO_MEMORY(msg->dn);
812 if (name[0] != '\0') {
813 /* For a default value, we add/overwrite the attributes to/of the hive.
814 For a normal value, we create a new child. */
815 if (!ldb_dn_add_child_fmt(msg->dn, "value=%s",
816 reg_ldb_escape(mem_ctx, name)))
818 talloc_free(mem_ctx);
823 /* Try first a "modify" and if this doesn't work do try an "add" */
824 for (i = 0; i < msg->num_elements; i++) {
825 if (msg->elements[i].flags != LDB_FLAG_MOD_DELETE) {
826 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
829 ret = ldb_modify(kd->ldb, msg);
830 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
832 while (i < msg->num_elements) {
833 if (LDB_FLAG_MOD_TYPE(msg->elements[i].flags) == LDB_FLAG_MOD_DELETE) {
834 ldb_msg_remove_element(msg, &msg->elements[i]);
839 ret = ldb_add(kd->ldb, msg);
841 if (ret == LDB_ERR_NO_SUCH_ATTRIBUTE) {
842 /* ignore this -> the value didn't exist and also now doesn't */
848 if (ret != LDB_SUCCESS) {
849 DEBUG(1, ("ldb_set_value: %s\n", ldb_errstring(kd->ldb)));
850 talloc_free(mem_ctx);
855 talloc_free(kd->values);
858 talloc_free(mem_ctx);
862 static WERROR ldb_get_key_info(TALLOC_CTX *mem_ctx,
863 const struct hive_key *key,
864 const char **classname,
865 uint32_t *num_subkeys,
866 uint32_t *num_values,
867 NTTIME *last_change_time,
868 uint32_t *max_subkeynamelen,
869 uint32_t *max_valnamelen,
870 uint32_t *max_valbufsize)
872 struct ldb_key_data *kd = talloc_get_type(key, struct ldb_key_data);
873 uint32_t default_value_type = REG_NONE;
874 DATA_BLOB default_value = { NULL, 0 };
878 if (classname != NULL)
880 if (num_subkeys != NULL)
882 if (num_values != NULL)
884 if (last_change_time != NULL)
885 *last_change_time = 0;
886 if (max_subkeynamelen != NULL)
887 *max_subkeynamelen = 0;
888 if (max_valnamelen != NULL)
890 if (max_valbufsize != NULL)
893 /* We need this to get the default value (if it exists) for counting
894 * the values under the key and for finding out the longest value buffer
895 * size. If no default value exists the DATA_BLOB "default_value" will
896 * remain { NULL, 0 }. */
897 werr = ldb_get_default_value(mem_ctx, key, NULL, &default_value_type,
899 if ((!W_ERROR_IS_OK(werr)) && (!W_ERROR_EQUAL(werr, WERR_BADFILE))) {
903 if (kd->subkeys == NULL) {
904 W_ERROR_NOT_OK_RETURN(cache_subkeys(kd));
906 if (kd->values == NULL) {
907 W_ERROR_NOT_OK_RETURN(cache_values(kd));
910 if (classname != NULL) {
911 *classname = kd->classname;
914 if (num_subkeys != NULL) {
915 *num_subkeys = kd->subkey_count;
917 if (num_values != NULL) {
918 *num_values = kd->value_count;
919 /* also consider the default value if it exists */
920 if (default_value.data != NULL) {
926 if (max_subkeynamelen != NULL) {
928 struct ldb_message_element *el;
930 for (i = 0; i < kd->subkey_count; i++) {
931 el = ldb_msg_find_element(kd->subkeys[i], "key");
932 *max_subkeynamelen = MAX(*max_subkeynamelen, el->values[0].length);
936 if (max_valnamelen != NULL || max_valbufsize != NULL) {
938 struct ldb_message_element *el;
939 W_ERROR_NOT_OK_RETURN(cache_values(kd));
941 /* also consider the default value if it exists */
942 if ((max_valbufsize != NULL) && (default_value.data != NULL)) {
943 *max_valbufsize = MAX(*max_valbufsize,
944 default_value.length);
947 for (i = 0; i < kd->value_count; i++) {
948 if (max_valnamelen != NULL) {
949 el = ldb_msg_find_element(kd->values[i], "value");
950 *max_valnamelen = MAX(*max_valnamelen, el->values[0].length);
953 if (max_valbufsize != NULL) {
956 reg_ldb_unpack_value(mem_ctx,
959 *max_valbufsize = MAX(*max_valbufsize, data.length);
960 talloc_free(data.data);
965 talloc_free(default_value.data);
970 static struct hive_operations reg_backend_ldb = {
972 .add_key = ldb_add_key,
973 .del_key = ldb_del_key,
974 .get_key_by_name = ldb_open_key,
975 .enum_value = ldb_get_value_by_id,
976 .enum_key = ldb_get_subkey_by_id,
977 .set_value = ldb_set_value,
978 .get_value_by_name = ldb_get_value,
979 .delete_value = ldb_del_value,
980 .get_key_info = ldb_get_key_info,