2 * Unix SMB/CIFS implementation.
3 * Virtual Windows Registry Layer
4 * Copyright (C) Gerald Carter 2002-2005
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.
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.
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/>.
20 /* Implementation of internal registry database functions. */
25 #define DBGC_CLASS DBGC_REGISTRY
27 static struct db_context *regdb = NULL;
28 static int regdb_refcount;
30 static bool regdb_key_exists(const char *key);
31 static bool regdb_key_is_base_key(const char *key);
33 /* List the deepest path into the registry. All part components will be created.*/
35 /* If you want to have a part of the path controlled by the tdb and part by
36 a virtual registry db (e.g. printing), then you have to list the deepest path.
37 For example,"HKLM/SOFTWARE/Microsoft/Windows NT/CurrentVersion/Print"
38 allows the reg_db backend to handle everything up to
39 "HKLM/SOFTWARE/Microsoft/Windows NT/CurrentVersion" and then we'll hook
40 the reg_printing backend onto the last component of the path (see
41 KEY_PRINTING_2K in include/rpc_reg.h) --jerry */
43 static const char *builtin_registry_paths[] = {
53 KEY_SAMBA_GROUP_POLICY,
54 KEY_GP_MACHINE_POLICY,
55 KEY_GP_MACHINE_WIN_POLICY,
58 KEY_GP_USER_WIN_POLICY,
59 KEY_WINLOGON_GPEXT_PATH,
60 "HKLM\\SYSTEM\\CurrentControlSet\\Control\\Print\\Monitors",
62 "HKLM\\SYSTEM\\CurrentControlSet\\Control\\Terminal Server\\DefaultUserConfiguration",
71 struct builtin_regkey_value {
73 const char *valuename;
81 static struct builtin_regkey_value builtin_registry_values[] = {
83 SAMBA_PRINTER_PORT_NAME, REG_SZ, { "" } },
85 "DefaultSpoolDirectory", REG_SZ, { "C:\\Windows\\System32\\Spool\\Printers" } },
87 "DisplayName", REG_SZ, { "Event Log" } },
89 "ErrorControl", REG_DWORD, { (char*)0x00000001 } },
90 { NULL, NULL, 0, { NULL } }
94 * Initialize a key in the registry:
95 * create each component key of the specified path.
97 static WERROR init_registry_key_internal(const char *add_path)
100 TALLOC_CTX *frame = talloc_stackframe();
103 char *remaining = NULL;
106 REGSUBKEY_CTR *subkeys;
109 DEBUG(6, ("init_registry_key: Adding [%s]\n", add_path));
111 path = talloc_strdup(frame, add_path);
112 base = talloc_strdup(frame, "");
113 if (!path || !base) {
119 while (next_token_talloc(frame, &p, &keyname, "\\")) {
121 /* build up the registry path from the components */
124 base = talloc_asprintf(frame, "%s\\", base);
130 base = talloc_asprintf_append(base, "%s", keyname);
136 /* get the immediate subkeyname (if we have one ) */
138 subkeyname = talloc_strdup(frame, "");
144 remaining = talloc_strdup(frame, p);
151 if (!next_token_talloc(frame, &p2,
154 subkeyname = talloc_strdup(frame,p2);
162 DEBUG(10,("init_registry_key: Storing key [%s] with "
163 "subkey [%s]\n", base,
164 *subkeyname ? subkeyname : "NULL"));
166 /* we don't really care if the lookup succeeds or not
167 * since we are about to update the record.
168 * We just want any subkeys already present */
170 if (!(subkeys = TALLOC_ZERO_P(frame, REGSUBKEY_CTR))) {
171 DEBUG(0,("talloc() failure!\n"));
176 regdb_fetch_keys(base, subkeys);
178 werr = regsubkey_ctr_addkey(subkeys, subkeyname);
179 if (!W_ERROR_IS_OK(werr)) {
183 if (!regdb_store_keys( base, subkeys)) {
184 werr = WERR_CAN_NOT_COMPLETE;
197 * Initialize a key in the registry:
198 * create each component key of the specified path,
199 * wrapped in one db transaction.
201 WERROR init_registry_key(const char *add_path)
205 if (regdb_key_exists(add_path)) {
209 if (regdb->transaction_start(regdb) != 0) {
210 DEBUG(0, ("init_registry_key: transaction_start failed\n"));
211 return WERR_REG_IO_FAILURE;
214 werr = init_registry_key_internal(add_path);
215 if (!W_ERROR_IS_OK(werr)) {
219 if (regdb->transaction_commit(regdb) != 0) {
220 DEBUG(0, ("init_registry_key: Could not commit transaction\n"));
221 return WERR_REG_IO_FAILURE;
227 if (regdb->transaction_cancel(regdb) != 0) {
228 smb_panic("init_registry_key: transaction_cancel failed\n");
234 /***********************************************************************
235 Open the registry data in the tdb
236 ***********************************************************************/
238 WERROR init_registry_data(void)
241 TALLOC_CTX *frame = talloc_stackframe();
247 * First, check for the existence of the needed keys and values.
248 * If all do already exist, we can save the writes.
250 for (i=0; builtin_registry_paths[i] != NULL; i++) {
251 if (!regdb_key_exists(builtin_registry_paths[i])) {
256 for (i=0; builtin_registry_values[i].path != NULL; i++) {
257 values = TALLOC_ZERO_P(frame, REGVAL_CTR);
258 if (values == NULL) {
263 regdb_fetch_values(builtin_registry_values[i].path, values);
264 if (!regval_ctr_key_exists(values,
265 builtin_registry_values[i].valuename))
280 * There are potentially quite a few store operations which are all
281 * indiviually wrapped in tdb transactions. Wrapping them in a single
282 * transaction gives just a single transaction_commit() to actually do
283 * its fsync()s. See tdb/common/transaction.c for info about nested
284 * transaction behaviour.
287 if (regdb->transaction_start(regdb) != 0) {
288 DEBUG(0, ("init_registry_data: tdb_transaction_start "
290 werr = WERR_REG_IO_FAILURE;
294 /* loop over all of the predefined paths and add each component */
296 for (i=0; builtin_registry_paths[i] != NULL; i++) {
297 if (regdb_key_exists(builtin_registry_paths[i])) {
300 werr = init_registry_key_internal(builtin_registry_paths[i]);
301 if (!W_ERROR_IS_OK(werr)) {
306 /* loop over all of the predefined values and add each component */
308 for (i=0; builtin_registry_values[i].path != NULL; i++) {
310 values = TALLOC_ZERO_P(frame, REGVAL_CTR);
311 if (values == NULL) {
316 regdb_fetch_values(builtin_registry_values[i].path, values);
318 /* preserve existing values across restarts. Only add new ones */
320 if (!regval_ctr_key_exists(values,
321 builtin_registry_values[i].valuename))
323 switch(builtin_registry_values[i].type) {
325 regval_ctr_addvalue(values,
326 builtin_registry_values[i].valuename,
328 (char*)&builtin_registry_values[i].data.dw_value,
334 builtin_registry_values[i].data.string,
336 regval_ctr_addvalue(values,
337 builtin_registry_values[i].valuename,
340 data.uni_str_len*sizeof(uint16));
344 DEBUG(0, ("init_registry_data: invalid value "
345 "type in builtin_registry_values "
347 builtin_registry_values[i].type));
349 regdb_store_values(builtin_registry_values[i].path,
355 if (regdb->transaction_commit(regdb) != 0) {
356 DEBUG(0, ("init_registry_data: Could not commit "
358 werr = WERR_REG_IO_FAILURE;
366 if (regdb->transaction_cancel(regdb) != 0) {
367 smb_panic("init_registry_data: tdb_transaction_cancel "
376 /***********************************************************************
377 Open the registry database
378 ***********************************************************************/
380 WERROR regdb_init(void)
382 const char *vstring = "INFO/version";
387 DEBUG(10, ("regdb_init: incrementing refcount (%d)\n",
393 regdb = db_open(NULL, state_path("registry.tdb"), 0,
394 REG_TDB_FLAGS, O_RDWR, 0600);
396 regdb = db_open(NULL, state_path("registry.tdb"), 0,
397 REG_TDB_FLAGS, O_RDWR|O_CREAT, 0600);
399 werr = ntstatus_to_werror(map_nt_error_from_unix(errno));
400 DEBUG(1,("regdb_init: Failed to open registry %s (%s)\n",
401 state_path("registry.tdb"), strerror(errno) ));
405 DEBUG(10,("regdb_init: Successfully created registry tdb\n"));
410 vers_id = dbwrap_fetch_int32(regdb, vstring);
412 if ( vers_id != REGVER_V1 ) {
414 /* any upgrade code here if needed */
415 DEBUG(10, ("regdb_init: got %s = %d != %d\n", vstring,
416 vers_id, REGVER_V1));
417 status = dbwrap_trans_store_int32(regdb, vstring, REGVER_V1);
418 if (!NT_STATUS_IS_OK(status)) {
419 DEBUG(1, ("regdb_init: error storing %s = %d: %s\n",
420 vstring, REGVER_V1, nt_errstr(status)));
421 return ntstatus_to_werror(status);
423 DEBUG(10, ("regdb_init: stored %s = %d\n",
424 vstring, REGVER_V1));
431 /***********************************************************************
432 Open the registry. Must already have been initialized by regdb_init()
433 ***********************************************************************/
435 WERROR regdb_open( void )
437 WERROR result = WERR_OK;
440 DEBUG(10,("regdb_open: incrementing refcount (%d)\n", regdb_refcount));
447 regdb = db_open(NULL, state_path("registry.tdb"), 0,
448 REG_TDB_FLAGS, O_RDWR, 0600);
450 result = ntstatus_to_werror( map_nt_error_from_unix( errno ) );
451 DEBUG(0,("regdb_open: Failed to open %s! (%s)\n",
452 state_path("registry.tdb"), strerror(errno) ));
458 DEBUG(10,("regdb_open: refcount reset (%d)\n", regdb_refcount));
463 /***********************************************************************
464 ***********************************************************************/
466 int regdb_close( void )
468 if (regdb_refcount == 0) {
474 DEBUG(10,("regdb_close: decrementing refcount (%d)\n", regdb_refcount));
476 if ( regdb_refcount > 0 )
479 SMB_ASSERT( regdb_refcount >= 0 );
485 /***********************************************************************
486 return the tdb sequence number of the registry tdb.
487 this is an indicator for the content of the registry
488 having changed. it will change upon regdb_init, too, though.
489 ***********************************************************************/
490 int regdb_get_seqnum(void)
492 return regdb->get_seqnum(regdb);
495 /***********************************************************************
496 Add subkey strings to the registry tdb under a defined key
497 fmt is the same format as tdb_pack except this function only supports
499 ***********************************************************************/
501 static bool regdb_store_keys_internal(const char *key, REGSUBKEY_CTR *ctr)
504 uint8 *buffer = NULL;
508 uint32 num_subkeys = regsubkey_ctr_numkeys(ctr);
509 char *keyname = NULL;
510 TALLOC_CTX *ctx = talloc_stackframe();
517 keyname = talloc_strdup(ctx, key);
521 keyname = normalize_reg_path(ctx, keyname);
523 /* allocate some initial memory */
525 buffer = (uint8 *)SMB_MALLOC(1024);
526 if (buffer == NULL) {
532 /* store the number of subkeys */
534 len += tdb_pack(buffer+len, buflen-len, "d", num_subkeys);
536 /* pack all the strings */
538 for (i=0; i<num_subkeys; i++) {
541 thistime = tdb_pack(buffer+len, buflen-len, "f",
542 regsubkey_ctr_specific_key(ctr, i));
543 if (len+thistime > buflen) {
546 * tdb_pack hasn't done anything because of the short
547 * buffer, allocate extra space.
549 buffer = SMB_REALLOC_ARRAY(buffer, uint8_t,
552 DEBUG(0, ("regdb_store_keys: Failed to realloc "
553 "memory of size [%d]\n",
558 buflen = (len+thistime)*2;
559 thistime2 = tdb_pack(
560 buffer+len, buflen-len, "f",
561 regsubkey_ctr_specific_key(ctr, i));
562 if (thistime2 != thistime) {
563 DEBUG(0, ("tdb_pack failed\n"));
571 /* finally write out the data */
575 status = dbwrap_store_bystring(regdb, keyname, dbuf, TDB_REPLACE);
576 if (!NT_STATUS_IS_OK(status)) {
587 /***********************************************************************
588 Store the new subkey record and create any child key records that
589 do not currently exist
590 ***********************************************************************/
592 bool regdb_store_keys(const char *key, REGSUBKEY_CTR *ctr)
596 REGSUBKEY_CTR *subkeys = NULL, *old_subkeys = NULL;
597 char *oldkeyname = NULL;
598 TALLOC_CTX *ctx = talloc_stackframe();
601 if (!regdb_key_is_base_key(key) && !regdb_key_exists(key)) {
606 * fetch a list of the old subkeys so we can determine if anything has
610 if (!(old_subkeys = TALLOC_ZERO_P(ctx, REGSUBKEY_CTR))) {
611 DEBUG(0,("regdb_store_keys: talloc() failure!\n"));
615 regdb_fetch_keys(key, old_subkeys);
617 if ((ctr->num_subkeys && old_subkeys->num_subkeys) &&
618 (ctr->num_subkeys == old_subkeys->num_subkeys)) {
620 for (i = 0; i<ctr->num_subkeys; i++) {
621 if (strcmp(ctr->subkeys[i],
622 old_subkeys->subkeys[i]) != 0) {
626 if (i == ctr->num_subkeys) {
628 * Nothing changed, no point to even start a tdb
631 TALLOC_FREE(old_subkeys);
636 TALLOC_FREE(old_subkeys);
638 if (regdb->transaction_start(regdb) != 0) {
639 DEBUG(0, ("regdb_store_keys: transaction_start failed\n"));
644 * Re-fetch the old keys inside the transaction
647 if (!(old_subkeys = TALLOC_ZERO_P(ctx, REGSUBKEY_CTR))) {
648 DEBUG(0,("regdb_store_keys: talloc() failure!\n"));
652 regdb_fetch_keys(key, old_subkeys);
655 * Make the store operation as safe as possible without transactions:
657 * (1) For each subkey removed from ctr compared with old_subkeys:
659 * (a) First delete the value db entry.
661 * (b) Next delete the secdesc db record.
663 * (c) Then delete the subkey list entry.
665 * (2) Now write the list of subkeys of the parent key,
666 * deleting removed entries and adding new ones.
668 * (3) Finally create the subkey list entries for the added keys.
670 * This way if we crash half-way in between deleting the subkeys
671 * and storing the parent's list of subkeys, no old data can pop up
672 * out of the blue when re-adding keys later on.
675 /* (1) delete removed keys' lists (values/secdesc/subkeys) */
677 num_subkeys = regsubkey_ctr_numkeys(old_subkeys);
678 for (i=0; i<num_subkeys; i++) {
679 oldkeyname = regsubkey_ctr_specific_key(old_subkeys, i);
681 if (regsubkey_ctr_key_exists(ctr, oldkeyname)) {
683 * It's still around, don't delete
689 /* (a) Delete the value list for this key */
691 path = talloc_asprintf(ctx, "%s/%s/%s",
698 path = normalize_reg_path(ctx, path);
702 /* Ignore errors here, we might have no values around */
703 dbwrap_delete_bystring(regdb, path);
706 /* (b) Delete the secdesc for this key */
708 path = talloc_asprintf(ctx, "%s/%s/%s",
715 path = normalize_reg_path(ctx, path);
719 status = dbwrap_delete_bystring(regdb, path);
720 /* Don't fail if there are no values around. */
721 if (!NT_STATUS_IS_OK(status) &&
722 !NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND))
724 DEBUG(1, ("Deleting %s failed: %s\n", path,
730 /* (c) Delete the list of subkeys of this key */
732 path = talloc_asprintf(ctx, "%s/%s", key, oldkeyname);
736 path = normalize_reg_path(ctx, path);
740 status = dbwrap_delete_bystring(regdb, path);
741 /* Don't fail if the subkey record was not found. */
742 if (!NT_STATUS_IS_OK(status) &&
743 !NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND))
745 DEBUG(1, ("Deleting %s failed: %s\n", path,
752 TALLOC_FREE(old_subkeys);
754 /* (2) store the subkey list for the parent */
756 if (!regdb_store_keys_internal(key, ctr) ) {
757 DEBUG(0,("regdb_store_keys: Failed to store new subkey list "
758 "for parent [%s]\n", key));
762 /* (3) now create records for any subkeys that don't already exist */
764 num_subkeys = regsubkey_ctr_numkeys(ctr);
766 if (num_subkeys == 0) {
767 if (!(subkeys = TALLOC_ZERO_P(ctx, REGSUBKEY_CTR)) ) {
768 DEBUG(0,("regdb_store_keys: talloc() failure!\n"));
772 if (!regdb_store_keys_internal(key, subkeys)) {
773 DEBUG(0,("regdb_store_keys: Failed to store "
774 "new record for key [%s]\n", key));
777 TALLOC_FREE(subkeys);
781 for (i=0; i<num_subkeys; i++) {
782 path = talloc_asprintf(ctx, "%s/%s",
784 regsubkey_ctr_specific_key(ctr, i));
788 if (!(subkeys = TALLOC_ZERO_P(ctx, REGSUBKEY_CTR)) ) {
789 DEBUG(0,("regdb_store_keys: talloc() failure!\n"));
793 if (regdb_fetch_keys( path, subkeys ) == -1) {
794 /* create a record with 0 subkeys */
795 if (!regdb_store_keys_internal(path, subkeys)) {
796 DEBUG(0,("regdb_store_keys: Failed to store "
797 "new record for key [%s]\n", path));
802 TALLOC_FREE(subkeys);
806 if (regdb->transaction_commit(regdb) != 0) {
807 DEBUG(0, ("regdb_store_keys: Could not commit transaction\n"));
815 if (regdb->transaction_cancel(regdb) != 0) {
816 smb_panic("regdb_store_keys: transaction_cancel failed\n");
826 static TDB_DATA regdb_fetch_key_internal(TALLOC_CTX *mem_ctx, const char *key)
831 path = normalize_reg_path(mem_ctx, key);
833 return make_tdb_data(NULL, 0);
836 data = dbwrap_fetch_bystring(regdb, mem_ctx, path);
844 * check whether a given key name represents a base key,
845 * i.e one without a subkey separator ('/' or '\').
847 static bool regdb_key_is_base_key(const char *key)
849 TALLOC_CTX *mem_ctx = talloc_stackframe();
857 path = normalize_reg_path(mem_ctx, key);
859 DEBUG(0, ("out of memory! (talloc failed)\n"));
867 ret = (strrchr(path, '/') == NULL);
870 TALLOC_FREE(mem_ctx);
876 * Check for the existence of a key.
878 * Existence of a key is authoritatively defined by its
879 * existence in the list of subkeys of its parent key.
880 * The exeption of this are keys without a parent key,
881 * i.e. the "base" keys (HKLM, HKCU, ...).
883 static bool regdb_key_exists(const char *key)
885 TALLOC_CTX *mem_ctx = talloc_stackframe();
894 path = normalize_reg_path(mem_ctx, key);
896 DEBUG(0, ("out of memory! (talloc failed)\n"));
904 p = strrchr(path, '/');
906 /* this is a base key */
907 value = regdb_fetch_key_internal(mem_ctx, path);
908 ret = (value.dptr != NULL);
910 /* get the list of subkeys of the parent key */
911 uint32 num_items, len, i;
916 value = regdb_fetch_key_internal(mem_ctx, path);
917 if (value.dptr == NULL) {
921 len = tdb_unpack(value.dptr, value.dsize, "d", &num_items);
922 for (i = 0; i < num_items; i++) {
923 len += tdb_unpack(value.dptr +len, value.dsize -len,
925 if (strequal(subkeyname, p)) {
933 TALLOC_FREE(mem_ctx);
938 /***********************************************************************
939 Retrieve an array of strings containing subkeys. Memory should be
940 released by the caller.
941 ***********************************************************************/
943 int regdb_fetch_keys(const char *key, REGSUBKEY_CTR *ctr)
952 TALLOC_CTX *frame = talloc_stackframe();
955 DEBUG(11,("regdb_fetch_keys: Enter key => [%s]\n", key ? key : "NULL"));
957 if (!regdb_key_exists(key)) {
961 ctr->seqnum = regdb_get_seqnum();
963 value = regdb_fetch_key_internal(frame, key);
965 if (value.dptr == NULL) {
966 DEBUG(10, ("regdb_fetch_keys: no subkeys found for key [%s]\n",
973 buflen = value.dsize;
974 len = tdb_unpack( buf, buflen, "d", &num_items);
976 for (i=0; i<num_items; i++) {
977 len += tdb_unpack(buf+len, buflen-len, "f", subkeyname);
978 werr = regsubkey_ctr_addkey(ctr, subkeyname);
979 if (!W_ERROR_IS_OK(werr)) {
980 DEBUG(5, ("regdb_fetch_keys: regsubkey_ctr_addkey "
981 "failed: %s\n", win_errstr(werr)));
986 DEBUG(11,("regdb_fetch_keys: Exit [%d] items\n", num_items));
994 /****************************************************************************
995 Unpack a list of registry values frem the TDB
996 ***************************************************************************/
998 static int regdb_unpack_values(REGVAL_CTR *values, uint8 *buf, int buflen)
1005 uint32 num_values = 0;
1008 /* loop and unpack the rest of the registry values */
1010 len += tdb_unpack(buf+len, buflen-len, "d", &num_values);
1012 for ( i=0; i<num_values; i++ ) {
1013 /* unpack the next regval */
1018 valuename[0] = '\0';
1019 len += tdb_unpack(buf+len, buflen-len, "fdB",
1025 /* add the new value. Paranoid protective code -- make sure data_p is valid */
1027 if (*valuename && size && data_p) {
1028 regval_ctr_addvalue(values, valuename, type,
1029 (const char *)data_p, size);
1031 SAFE_FREE(data_p); /* 'B' option to tdb_unpack does a malloc() */
1033 DEBUG(8,("specific: [%s], len: %d\n", valuename, size));
1039 /****************************************************************************
1040 Pack all values in all printer keys
1041 ***************************************************************************/
1043 static int regdb_pack_values(REGVAL_CTR *values, uint8 *buf, int buflen)
1047 REGISTRY_VALUE *val;
1053 num_values = regval_ctr_numvals( values );
1055 /* pack the number of values first */
1057 len += tdb_pack( buf+len, buflen-len, "d", num_values );
1059 /* loop over all values */
1061 for ( i=0; i<num_values; i++ ) {
1062 val = regval_ctr_specific_value( values, i );
1063 len += tdb_pack(buf+len, buflen-len, "fdB",
1067 regval_data_p(val) );
1073 /***********************************************************************
1074 Retrieve an array of strings containing subkeys. Memory should be
1075 released by the caller.
1076 ***********************************************************************/
1078 int regdb_fetch_values( const char* key, REGVAL_CTR *values )
1080 char *keystr = NULL;
1081 TALLOC_CTX *ctx = talloc_stackframe();
1085 DEBUG(10,("regdb_fetch_values: Looking for value of key [%s] \n", key));
1087 if (!regdb_key_exists(key)) {
1091 keystr = talloc_asprintf(ctx, "%s/%s", REG_VALUE_PREFIX, key);
1096 values->seqnum = regdb_get_seqnum();
1098 value = regdb_fetch_key_internal(ctx, keystr);
1101 /* all keys have zero values by default */
1105 regdb_unpack_values(values, value.dptr, value.dsize);
1106 ret = regval_ctr_numvals(values);
1113 bool regdb_store_values( const char *key, REGVAL_CTR *values )
1115 TDB_DATA old_data, data;
1116 char *keystr = NULL;
1117 TALLOC_CTX *ctx = talloc_stackframe();
1120 bool result = false;
1122 DEBUG(10,("regdb_store_values: Looking for value of key [%s] \n", key));
1124 if (!regdb_key_exists(key)) {
1130 len = regdb_pack_values(values, data.dptr, data.dsize);
1132 DEBUG(0,("regdb_store_values: unable to pack values. len <= 0\n"));
1136 data.dptr = TALLOC_ARRAY(ctx, uint8, len);
1139 len = regdb_pack_values(values, data.dptr, data.dsize);
1141 SMB_ASSERT( len == data.dsize );
1143 keystr = talloc_asprintf(ctx, "%s/%s", REG_VALUE_PREFIX, key );
1147 keystr = normalize_reg_path(ctx, keystr);
1152 old_data = dbwrap_fetch_bystring(regdb, ctx, keystr);
1154 if ((old_data.dptr != NULL)
1155 && (old_data.dsize == data.dsize)
1156 && (memcmp(old_data.dptr, data.dptr, data.dsize) == 0))
1162 status = dbwrap_trans_store_bystring(regdb, keystr, data, TDB_REPLACE);
1164 result = NT_STATUS_IS_OK(status);
1171 static WERROR regdb_get_secdesc(TALLOC_CTX *mem_ctx, const char *key,
1172 struct security_descriptor **psecdesc)
1177 TALLOC_CTX *tmp_ctx = talloc_stackframe();
1178 WERROR err = WERR_OK;
1180 DEBUG(10, ("regdb_get_secdesc: Getting secdesc of key [%s]\n", key));
1182 if (!regdb_key_exists(key)) {
1187 tdbkey = talloc_asprintf(tmp_ctx, "%s/%s", REG_SECDESC_PREFIX, key);
1188 if (tdbkey == NULL) {
1192 normalize_dbkey(tdbkey);
1194 data = dbwrap_fetch_bystring(regdb, tmp_ctx, tdbkey);
1195 if (data.dptr == NULL) {
1200 status = unmarshall_sec_desc(mem_ctx, (uint8 *)data.dptr, data.dsize,
1203 if (NT_STATUS_EQUAL(status, NT_STATUS_NO_MEMORY)) {
1205 } else if (!NT_STATUS_IS_OK(status)) {
1206 err = WERR_REG_CORRUPT;
1210 TALLOC_FREE(tmp_ctx);
1214 static WERROR regdb_set_secdesc(const char *key,
1215 struct security_descriptor *secdesc)
1217 TALLOC_CTX *mem_ctx = talloc_stackframe();
1220 WERROR err = WERR_NOMEM;
1223 if (!regdb_key_exists(key)) {
1228 tdbkey = talloc_asprintf(mem_ctx, "%s/%s", REG_SECDESC_PREFIX, key);
1229 if (tdbkey == NULL) {
1232 normalize_dbkey(tdbkey);
1234 if (secdesc == NULL) {
1235 /* assuming a delete */
1236 status = dbwrap_trans_delete_bystring(regdb, tdbkey);
1237 if (NT_STATUS_IS_OK(status)) {
1240 err = ntstatus_to_werror(status);
1245 err = ntstatus_to_werror(marshall_sec_desc(mem_ctx, secdesc,
1248 if (!W_ERROR_IS_OK(err)) {
1252 status = dbwrap_trans_store_bystring(regdb, tdbkey, tdbdata, 0);
1253 if (!NT_STATUS_IS_OK(status)) {
1254 err = ntstatus_to_werror(status);
1259 TALLOC_FREE(mem_ctx);
1263 bool regdb_subkeys_need_update(REGSUBKEY_CTR *subkeys)
1265 return (regdb_get_seqnum() != subkeys->seqnum);
1268 bool regdb_values_need_update(REGVAL_CTR *values)
1270 return (regdb_get_seqnum() != values->seqnum);
1274 * Table of function pointers for default access
1277 REGISTRY_OPS regdb_ops = {
1278 .fetch_subkeys = regdb_fetch_keys,
1279 .fetch_values = regdb_fetch_values,
1280 .store_subkeys = regdb_store_keys,
1281 .store_values = regdb_store_values,
1282 .get_secdesc = regdb_get_secdesc,
1283 .set_secdesc = regdb_set_secdesc,
1284 .subkeys_need_update = regdb_subkeys_need_update,
1285 .values_need_update = regdb_values_need_update