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https://github.com/samba-team/samba.git
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640cecab19
Signed-off-by: Andreas Schneider <asn@samba.org>
1071 lines
24 KiB
C
1071 lines
24 KiB
C
/*
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* Unix SMB/CIFS implementation.
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* Virtual Windows Registry Layer
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* Copyright (C) Volker Lendecke 2006
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* Copyright (C) Michael Adam 2007-2010
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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/* Attempt to wrap the existing API in a more winreg.idl-like way */
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/*
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* Here is a list of winreg.idl functions and corresponding implementations
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* provided here:
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*
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* 0x00 winreg_OpenHKCR
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* 0x01 winreg_OpenHKCU
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* 0x02 winreg_OpenHKLM
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* 0x03 winreg_OpenHKPD
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* 0x04 winreg_OpenHKU
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* 0x05 winreg_CloseKey
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* 0x06 winreg_CreateKey reg_createkey
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* 0x07 winreg_DeleteKey reg_deletekey
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* 0x08 winreg_DeleteValue reg_deletevalue
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* 0x09 winreg_EnumKey reg_enumkey
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* 0x0a winreg_EnumValue reg_enumvalue
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* 0x0b winreg_FlushKey
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* 0x0c winreg_GetKeySecurity reg_getkeysecurity
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* 0x0d winreg_LoadKey
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* 0x0e winreg_NotifyChangeKeyValue
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* 0x0f winreg_OpenKey reg_openkey
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* 0x10 winreg_QueryInfoKey reg_queryinfokey
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* 0x11 winreg_QueryValue reg_queryvalue
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* 0x12 winreg_ReplaceKey
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* 0x13 winreg_RestoreKey reg_restorekey
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* 0x14 winreg_SaveKey reg_savekey
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* 0x15 winreg_SetKeySecurity reg_setkeysecurity
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* 0x16 winreg_SetValue reg_setvalue
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* 0x17 winreg_UnLoadKey
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* 0x18 winreg_InitiateSystemShutdown
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* 0x19 winreg_AbortSystemShutdown
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* 0x1a winreg_GetVersion reg_getversion
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* 0x1b winreg_OpenHKCC
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* 0x1c winreg_OpenHKDD
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* 0x1d winreg_QueryMultipleValues reg_querymultiplevalues
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* 0x1e winreg_InitiateSystemShutdownEx
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* 0x1f winreg_SaveKeyEx
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* 0x20 winreg_OpenHKPT
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* 0x21 winreg_OpenHKPN
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* 0x22 winreg_QueryMultipleValues2 reg_querymultiplevalues
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*
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*/
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#include "includes.h"
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#include "registry.h"
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#include "reg_api.h"
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#include "reg_cachehook.h"
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#include "reg_backend_db.h"
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#include "reg_dispatcher.h"
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#include "reg_objects.h"
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#include "../librpc/gen_ndr/ndr_security.h"
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#undef DBGC_CLASS
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#define DBGC_CLASS DBGC_REGISTRY
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/**********************************************************************
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* Helper functions
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**********************************************************************/
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static WERROR fill_value_cache(struct registry_key *key)
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{
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WERROR werr;
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if (key->values != NULL) {
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if (!reg_values_need_update(key->key, key->values)) {
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return WERR_OK;
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}
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}
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TALLOC_FREE(key->values);
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werr = regval_ctr_init(key, &(key->values));
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W_ERROR_NOT_OK_RETURN(werr);
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if (fetch_reg_values(key->key, key->values) == -1) {
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TALLOC_FREE(key->values);
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return WERR_BADFILE;
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}
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return WERR_OK;
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}
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static WERROR fill_subkey_cache(struct registry_key *key)
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{
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WERROR werr;
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if (key->subkeys != NULL) {
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if (!reg_subkeys_need_update(key->key, key->subkeys)) {
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return WERR_OK;
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}
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}
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TALLOC_FREE(key->subkeys);
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werr = regsubkey_ctr_init(key, &(key->subkeys));
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W_ERROR_NOT_OK_RETURN(werr);
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if (fetch_reg_keys(key->key, key->subkeys) == -1) {
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TALLOC_FREE(key->subkeys);
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return WERR_NO_MORE_ITEMS;
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}
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return WERR_OK;
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}
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static int regkey_destructor(struct registry_key_handle *key)
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{
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return regdb_close();
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}
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static WERROR regkey_open_onelevel(TALLOC_CTX *mem_ctx,
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struct registry_key *parent,
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const char *name,
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const struct security_token *token,
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uint32 access_desired,
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struct registry_key **pregkey)
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{
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WERROR result = WERR_OK;
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struct registry_key *regkey;
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struct registry_key_handle *key;
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struct regsubkey_ctr *subkeys = NULL;
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DEBUG(7,("regkey_open_onelevel: name = [%s]\n", name));
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SMB_ASSERT(strchr(name, '\\') == NULL);
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if (!(regkey = talloc_zero(mem_ctx, struct registry_key)) ||
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!(regkey->token = dup_nt_token(regkey, token)) ||
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!(regkey->key = talloc_zero(regkey, struct registry_key_handle)))
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{
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result = WERR_NOMEM;
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goto done;
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}
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result = regdb_open();
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if (!(W_ERROR_IS_OK(result))) {
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goto done;
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}
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key = regkey->key;
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talloc_set_destructor(key, regkey_destructor);
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/* initialization */
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key->type = REG_KEY_GENERIC;
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if (name[0] == '\0') {
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/*
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* Open a copy of the parent key
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*/
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if (!parent) {
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result = WERR_BADFILE;
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goto done;
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}
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key->name = talloc_strdup(key, parent->key->name);
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}
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else {
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/*
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* Normal subkey open
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*/
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key->name = talloc_asprintf(key, "%s%s%s",
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parent ? parent->key->name : "",
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parent ? "\\": "",
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name);
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}
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if (key->name == NULL) {
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result = WERR_NOMEM;
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goto done;
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}
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/* Tag this as a Performance Counter Key */
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if( strncasecmp_m(key->name, KEY_HKPD, strlen(KEY_HKPD)) == 0 )
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key->type = REG_KEY_HKPD;
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/* Look up the table of registry I/O operations */
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if ( !(key->ops = reghook_cache_find( key->name )) ) {
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DEBUG(0,("reg_open_onelevel: Failed to assign "
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"registry_ops to [%s]\n", key->name ));
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result = WERR_BADFILE;
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goto done;
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}
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/* check if the path really exists; failed is indicated by -1 */
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/* if the subkey count failed, bail out */
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result = regsubkey_ctr_init(key, &subkeys);
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if (!W_ERROR_IS_OK(result)) {
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goto done;
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}
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if ( fetch_reg_keys( key, subkeys ) == -1 ) {
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result = WERR_BADFILE;
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goto done;
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}
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TALLOC_FREE( subkeys );
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if ( !regkey_access_check( key, access_desired, &key->access_granted,
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token ) ) {
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result = WERR_ACCESS_DENIED;
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goto done;
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}
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*pregkey = regkey;
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result = WERR_OK;
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done:
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if ( !W_ERROR_IS_OK(result) ) {
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TALLOC_FREE(regkey);
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}
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return result;
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}
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WERROR reg_openhive(TALLOC_CTX *mem_ctx, const char *hive,
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uint32 desired_access,
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const struct security_token *token,
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struct registry_key **pkey)
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{
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SMB_ASSERT(hive != NULL);
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SMB_ASSERT(hive[0] != '\0');
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SMB_ASSERT(strchr(hive, '\\') == NULL);
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return regkey_open_onelevel(mem_ctx, NULL, hive, token, desired_access,
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pkey);
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}
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/**********************************************************************
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* The API functions
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**********************************************************************/
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WERROR reg_openkey(TALLOC_CTX *mem_ctx, struct registry_key *parent,
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const char *name, uint32 desired_access,
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struct registry_key **pkey)
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{
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struct registry_key *direct_parent = parent;
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WERROR err;
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char *p, *path, *to_free;
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size_t len;
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if (!(path = SMB_STRDUP(name))) {
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return WERR_NOMEM;
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}
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to_free = path;
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len = strlen(path);
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if ((len > 0) && (path[len-1] == '\\')) {
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path[len-1] = '\0';
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}
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while ((p = strchr(path, '\\')) != NULL) {
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char *name_component;
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struct registry_key *tmp;
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if (!(name_component = SMB_STRNDUP(path, (p - path)))) {
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err = WERR_NOMEM;
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goto error;
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}
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err = regkey_open_onelevel(mem_ctx, direct_parent,
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name_component, parent->token,
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KEY_ENUMERATE_SUB_KEYS, &tmp);
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SAFE_FREE(name_component);
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if (!W_ERROR_IS_OK(err)) {
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goto error;
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}
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if (direct_parent != parent) {
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TALLOC_FREE(direct_parent);
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}
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direct_parent = tmp;
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path = p+1;
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}
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err = regkey_open_onelevel(mem_ctx, direct_parent, path, parent->token,
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desired_access, pkey);
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error:
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if (direct_parent != parent) {
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TALLOC_FREE(direct_parent);
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}
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SAFE_FREE(to_free);
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return err;
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}
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WERROR reg_enumkey(TALLOC_CTX *mem_ctx, struct registry_key *key,
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uint32 idx, char **name, NTTIME *last_write_time)
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{
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WERROR err;
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if (!(key->key->access_granted & KEY_ENUMERATE_SUB_KEYS)) {
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return WERR_ACCESS_DENIED;
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}
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if (!W_ERROR_IS_OK(err = fill_subkey_cache(key))) {
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return err;
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}
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if (idx >= regsubkey_ctr_numkeys(key->subkeys)) {
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return WERR_NO_MORE_ITEMS;
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}
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if (!(*name = talloc_strdup(mem_ctx,
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regsubkey_ctr_specific_key(key->subkeys, idx))))
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{
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return WERR_NOMEM;
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}
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if (last_write_time) {
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*last_write_time = 0;
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}
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return WERR_OK;
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}
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WERROR reg_enumvalue(TALLOC_CTX *mem_ctx, struct registry_key *key,
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uint32 idx, char **pname, struct registry_value **pval)
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{
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struct registry_value *val;
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struct regval_blob *blob;
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WERROR err;
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if (!(key->key->access_granted & KEY_QUERY_VALUE)) {
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return WERR_ACCESS_DENIED;
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}
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if (!(W_ERROR_IS_OK(err = fill_value_cache(key)))) {
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return err;
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}
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if (idx >= regval_ctr_numvals(key->values)) {
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return WERR_NO_MORE_ITEMS;
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}
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blob = regval_ctr_specific_value(key->values, idx);
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val = talloc_zero(mem_ctx, struct registry_value);
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if (val == NULL) {
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return WERR_NOMEM;
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}
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val->type = regval_type(blob);
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val->data = data_blob_talloc(mem_ctx, regval_data_p(blob), regval_size(blob));
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|
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if (pname
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&& !(*pname = talloc_strdup(
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mem_ctx, regval_name(blob)))) {
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TALLOC_FREE(val);
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return WERR_NOMEM;
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}
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*pval = val;
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return WERR_OK;
|
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}
|
|
|
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static WERROR reg_enumvalue_nocachefill(TALLOC_CTX *mem_ctx,
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struct registry_key *key,
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uint32 idx, char **pname,
|
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struct registry_value **pval)
|
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{
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struct registry_value *val;
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struct regval_blob *blob;
|
|
|
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if (!(key->key->access_granted & KEY_QUERY_VALUE)) {
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return WERR_ACCESS_DENIED;
|
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}
|
|
|
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if (idx >= regval_ctr_numvals(key->values)) {
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return WERR_NO_MORE_ITEMS;
|
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}
|
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|
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blob = regval_ctr_specific_value(key->values, idx);
|
|
|
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val = talloc_zero(mem_ctx, struct registry_value);
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if (val == NULL) {
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return WERR_NOMEM;
|
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}
|
|
|
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val->type = regval_type(blob);
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val->data = data_blob_talloc(mem_ctx, regval_data_p(blob), regval_size(blob));
|
|
|
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if (pname
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&& !(*pname = talloc_strdup(
|
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mem_ctx, regval_name(blob)))) {
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TALLOC_FREE(val);
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return WERR_NOMEM;
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}
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|
|
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*pval = val;
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return WERR_OK;
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}
|
|
|
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WERROR reg_queryvalue(TALLOC_CTX *mem_ctx, struct registry_key *key,
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const char *name, struct registry_value **pval)
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{
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WERROR err;
|
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uint32 i;
|
|
|
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if (!(key->key->access_granted & KEY_QUERY_VALUE)) {
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return WERR_ACCESS_DENIED;
|
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}
|
|
|
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if (!(W_ERROR_IS_OK(err = fill_value_cache(key)))) {
|
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return err;
|
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}
|
|
|
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for (i=0; i < regval_ctr_numvals(key->values); i++) {
|
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struct regval_blob *blob;
|
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blob = regval_ctr_specific_value(key->values, i);
|
|
if (strequal(regval_name(blob), name)) {
|
|
/*
|
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* don't use reg_enumvalue here:
|
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* re-reading the values from the disk
|
|
* would change the indexing and break
|
|
* this function.
|
|
*/
|
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return reg_enumvalue_nocachefill(mem_ctx, key, i,
|
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NULL, pval);
|
|
}
|
|
}
|
|
|
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return WERR_BADFILE;
|
|
}
|
|
|
|
WERROR reg_querymultiplevalues(TALLOC_CTX *mem_ctx,
|
|
struct registry_key *key,
|
|
uint32_t num_names,
|
|
const char **names,
|
|
uint32_t *pnum_vals,
|
|
struct registry_value **pvals)
|
|
{
|
|
WERROR err;
|
|
uint32_t i, n, found = 0;
|
|
struct registry_value *vals;
|
|
|
|
if (num_names == 0) {
|
|
return WERR_OK;
|
|
}
|
|
|
|
if (!(key->key->access_granted & KEY_QUERY_VALUE)) {
|
|
return WERR_ACCESS_DENIED;
|
|
}
|
|
|
|
if (!(W_ERROR_IS_OK(err = fill_value_cache(key)))) {
|
|
return err;
|
|
}
|
|
|
|
vals = talloc_zero_array(mem_ctx, struct registry_value, num_names);
|
|
if (vals == NULL) {
|
|
return WERR_NOMEM;
|
|
}
|
|
|
|
for (n=0; n < num_names; n++) {
|
|
for (i=0; i < regval_ctr_numvals(key->values); i++) {
|
|
struct regval_blob *blob;
|
|
blob = regval_ctr_specific_value(key->values, i);
|
|
if (strequal(regval_name(blob), names[n])) {
|
|
struct registry_value *v;
|
|
err = reg_enumvalue(mem_ctx, key, i, NULL, &v);
|
|
if (!W_ERROR_IS_OK(err)) {
|
|
return err;
|
|
}
|
|
vals[n] = *v;
|
|
found++;
|
|
}
|
|
}
|
|
}
|
|
|
|
*pvals = vals;
|
|
*pnum_vals = found;
|
|
|
|
return WERR_OK;
|
|
}
|
|
|
|
WERROR reg_queryinfokey(struct registry_key *key, uint32_t *num_subkeys,
|
|
uint32_t *max_subkeylen, uint32_t *max_subkeysize,
|
|
uint32_t *num_values, uint32_t *max_valnamelen,
|
|
uint32_t *max_valbufsize, uint32_t *secdescsize,
|
|
NTTIME *last_changed_time)
|
|
{
|
|
uint32 i, max_size;
|
|
size_t max_len;
|
|
TALLOC_CTX *mem_ctx;
|
|
WERROR err;
|
|
struct security_descriptor *secdesc;
|
|
|
|
if (!(key->key->access_granted & KEY_QUERY_VALUE)) {
|
|
return WERR_ACCESS_DENIED;
|
|
}
|
|
|
|
if (!W_ERROR_IS_OK(fill_subkey_cache(key)) ||
|
|
!W_ERROR_IS_OK(fill_value_cache(key))) {
|
|
return WERR_BADFILE;
|
|
}
|
|
|
|
max_len = 0;
|
|
for (i=0; i< regsubkey_ctr_numkeys(key->subkeys); i++) {
|
|
max_len = MAX(max_len,
|
|
strlen(regsubkey_ctr_specific_key(key->subkeys, i)));
|
|
}
|
|
|
|
*num_subkeys = regsubkey_ctr_numkeys(key->subkeys);
|
|
*max_subkeylen = max_len;
|
|
*max_subkeysize = 0; /* Class length? */
|
|
|
|
max_len = 0;
|
|
max_size = 0;
|
|
for (i=0; i < regval_ctr_numvals(key->values); i++) {
|
|
struct regval_blob *blob;
|
|
blob = regval_ctr_specific_value(key->values, i);
|
|
max_len = MAX(max_len, strlen(regval_name(blob)));
|
|
max_size = MAX(max_size, regval_size(blob));
|
|
}
|
|
|
|
*num_values = regval_ctr_numvals(key->values);
|
|
*max_valnamelen = max_len;
|
|
*max_valbufsize = max_size;
|
|
|
|
if (!(mem_ctx = talloc_new(key))) {
|
|
return WERR_NOMEM;
|
|
}
|
|
|
|
err = regkey_get_secdesc(mem_ctx, key->key, &secdesc);
|
|
if (!W_ERROR_IS_OK(err)) {
|
|
TALLOC_FREE(mem_ctx);
|
|
return err;
|
|
}
|
|
|
|
*secdescsize = ndr_size_security_descriptor(secdesc, 0);
|
|
TALLOC_FREE(mem_ctx);
|
|
|
|
*last_changed_time = 0;
|
|
|
|
return WERR_OK;
|
|
}
|
|
|
|
WERROR reg_createkey(TALLOC_CTX *ctx, struct registry_key *parent,
|
|
const char *subkeypath, uint32 desired_access,
|
|
struct registry_key **pkey,
|
|
enum winreg_CreateAction *paction)
|
|
{
|
|
struct registry_key *key = parent;
|
|
struct registry_key *create_parent;
|
|
TALLOC_CTX *mem_ctx;
|
|
char *path, *end;
|
|
WERROR err;
|
|
|
|
mem_ctx = talloc_new(ctx);
|
|
if (mem_ctx == NULL) {
|
|
return WERR_NOMEM;
|
|
}
|
|
|
|
path = talloc_strdup(mem_ctx, subkeypath);
|
|
if (path == NULL) {
|
|
err = WERR_NOMEM;
|
|
goto done;
|
|
}
|
|
|
|
err = regdb_transaction_start();
|
|
if (!W_ERROR_IS_OK(err)) {
|
|
DEBUG(0, ("reg_createkey: failed to start transaction: %s\n",
|
|
win_errstr(err)));
|
|
goto done;
|
|
}
|
|
|
|
while ((end = strchr(path, '\\')) != NULL) {
|
|
struct registry_key *tmp;
|
|
enum winreg_CreateAction action;
|
|
|
|
*end = '\0';
|
|
|
|
err = reg_createkey(mem_ctx, key, path,
|
|
KEY_ENUMERATE_SUB_KEYS, &tmp, &action);
|
|
if (!W_ERROR_IS_OK(err)) {
|
|
goto trans_done;
|
|
}
|
|
|
|
if (key != parent) {
|
|
TALLOC_FREE(key);
|
|
}
|
|
|
|
key = tmp;
|
|
path = end+1;
|
|
}
|
|
|
|
/*
|
|
* At this point, "path" contains the one-element subkey of "key". We
|
|
* can try to open it.
|
|
*/
|
|
|
|
err = reg_openkey(ctx, key, path, desired_access, pkey);
|
|
if (W_ERROR_IS_OK(err)) {
|
|
if (paction != NULL) {
|
|
*paction = REG_OPENED_EXISTING_KEY;
|
|
}
|
|
goto trans_done;
|
|
}
|
|
|
|
if (!W_ERROR_EQUAL(err, WERR_BADFILE)) {
|
|
/*
|
|
* Something but "notfound" has happened, so bail out
|
|
*/
|
|
goto trans_done;
|
|
}
|
|
|
|
/*
|
|
* We have to make a copy of the current key, as we opened it only
|
|
* with ENUM_SUBKEY access.
|
|
*/
|
|
|
|
err = reg_openkey(mem_ctx, key, "", KEY_CREATE_SUB_KEY,
|
|
&create_parent);
|
|
if (!W_ERROR_IS_OK(err)) {
|
|
goto trans_done;
|
|
}
|
|
|
|
/*
|
|
* Actually create the subkey
|
|
*/
|
|
|
|
err = fill_subkey_cache(create_parent);
|
|
if (!W_ERROR_IS_OK(err)) {
|
|
goto trans_done;
|
|
}
|
|
|
|
err = create_reg_subkey(key->key, path);
|
|
if (!W_ERROR_IS_OK(err)) {
|
|
goto trans_done;
|
|
}
|
|
|
|
/*
|
|
* Now open the newly created key
|
|
*/
|
|
|
|
err = reg_openkey(ctx, create_parent, path, desired_access, pkey);
|
|
if (W_ERROR_IS_OK(err) && (paction != NULL)) {
|
|
*paction = REG_CREATED_NEW_KEY;
|
|
}
|
|
|
|
trans_done:
|
|
if (W_ERROR_IS_OK(err)) {
|
|
err = regdb_transaction_commit();
|
|
if (!W_ERROR_IS_OK(err)) {
|
|
DEBUG(0, ("reg_createkey: Error committing transaction: %s\n", win_errstr(err)));
|
|
}
|
|
} else {
|
|
WERROR err1 = regdb_transaction_cancel();
|
|
if (!W_ERROR_IS_OK(err1)) {
|
|
DEBUG(0, ("reg_createkey: Error cancelling transaction: %s\n", win_errstr(err1)));
|
|
}
|
|
}
|
|
|
|
done:
|
|
TALLOC_FREE(mem_ctx);
|
|
return err;
|
|
}
|
|
|
|
static WERROR reg_deletekey_internal(TALLOC_CTX *mem_ctx,
|
|
struct registry_key *parent,
|
|
const char *path, bool lazy)
|
|
{
|
|
WERROR err;
|
|
char *name, *end;
|
|
struct registry_key *key;
|
|
name = talloc_strdup(mem_ctx, path);
|
|
if (name == NULL) {
|
|
err = WERR_NOMEM;
|
|
goto done;
|
|
}
|
|
|
|
/* no subkeys - proceed with delete */
|
|
end = strrchr(name, '\\');
|
|
if (end != NULL) {
|
|
*end = '\0';
|
|
|
|
err = reg_openkey(mem_ctx, parent, name,
|
|
KEY_CREATE_SUB_KEY, &key);
|
|
W_ERROR_NOT_OK_GOTO_DONE(err);
|
|
|
|
parent = key;
|
|
name = end+1;
|
|
}
|
|
|
|
if (name[0] == '\0') {
|
|
err = WERR_INVALID_PARAM;
|
|
goto done;
|
|
}
|
|
|
|
err = delete_reg_subkey(parent->key, name, lazy);
|
|
|
|
done:
|
|
return err;
|
|
}
|
|
|
|
WERROR reg_deletekey(struct registry_key *parent, const char *path)
|
|
{
|
|
WERROR err;
|
|
struct registry_key *key;
|
|
TALLOC_CTX *mem_ctx = talloc_stackframe();
|
|
|
|
/* check if the key has subkeys */
|
|
err = reg_openkey(mem_ctx, parent, path, REG_KEY_READ, &key);
|
|
W_ERROR_NOT_OK_GOTO_DONE(err);
|
|
|
|
err = regdb_transaction_start();
|
|
if (!W_ERROR_IS_OK(err)) {
|
|
DEBUG(0, ("reg_deletekey: Error starting transaction: %s\n",
|
|
win_errstr(err)));
|
|
goto done;
|
|
}
|
|
|
|
err = fill_subkey_cache(key);
|
|
if (!W_ERROR_IS_OK(err)) {
|
|
goto trans_done;
|
|
}
|
|
|
|
if (regsubkey_ctr_numkeys(key->subkeys) > 0) {
|
|
err = WERR_ACCESS_DENIED;
|
|
goto trans_done;
|
|
}
|
|
err = reg_deletekey_internal(mem_ctx, parent, path, false);
|
|
|
|
trans_done:
|
|
if (W_ERROR_IS_OK(err)) {
|
|
err = regdb_transaction_commit();
|
|
if (!W_ERROR_IS_OK(err)) {
|
|
DEBUG(0, ("reg_deletekey: Error committing transaction: %s\n", win_errstr(err)));
|
|
}
|
|
} else {
|
|
WERROR err1 = regdb_transaction_cancel();
|
|
if (!W_ERROR_IS_OK(err1)) {
|
|
DEBUG(0, ("reg_deletekey: Error cancelling transaction: %s\n", win_errstr(err1)));
|
|
}
|
|
}
|
|
|
|
done:
|
|
TALLOC_FREE(mem_ctx);
|
|
return err;
|
|
}
|
|
|
|
|
|
WERROR reg_setvalue(struct registry_key *key, const char *name,
|
|
const struct registry_value *val)
|
|
{
|
|
struct regval_blob *existing;
|
|
WERROR err;
|
|
int res;
|
|
|
|
if (!(key->key->access_granted & KEY_SET_VALUE)) {
|
|
return WERR_ACCESS_DENIED;
|
|
}
|
|
|
|
err = regdb_transaction_start();
|
|
if (!W_ERROR_IS_OK(err)) {
|
|
DEBUG(0, ("reg_setvalue: Failed to start transaction: %s\n",
|
|
win_errstr(err)));
|
|
return err;
|
|
}
|
|
|
|
err = fill_value_cache(key);
|
|
if (!W_ERROR_IS_OK(err)) {
|
|
DEBUG(0, ("reg_setvalue: Error filling value cache: %s\n", win_errstr(err)));
|
|
goto done;
|
|
}
|
|
|
|
existing = regval_ctr_getvalue(key->values, name);
|
|
|
|
if ((existing != NULL) &&
|
|
(regval_size(existing) == val->data.length) &&
|
|
(memcmp(regval_data_p(existing), val->data.data,
|
|
val->data.length) == 0))
|
|
{
|
|
err = WERR_OK;
|
|
goto done;
|
|
}
|
|
|
|
res = regval_ctr_addvalue(key->values, name, val->type,
|
|
val->data.data, val->data.length);
|
|
|
|
if (res == 0) {
|
|
TALLOC_FREE(key->values);
|
|
err = WERR_NOMEM;
|
|
goto done;
|
|
}
|
|
|
|
if (!store_reg_values(key->key, key->values)) {
|
|
TALLOC_FREE(key->values);
|
|
DEBUG(0, ("reg_setvalue: store_reg_values failed\n"));
|
|
err = WERR_REG_IO_FAILURE;
|
|
goto done;
|
|
}
|
|
|
|
err = WERR_OK;
|
|
|
|
done:
|
|
if (W_ERROR_IS_OK(err)) {
|
|
err = regdb_transaction_commit();
|
|
if (!W_ERROR_IS_OK(err)) {
|
|
DEBUG(0, ("reg_setvalue: Error committing transaction: %s\n", win_errstr(err)));
|
|
}
|
|
} else {
|
|
WERROR err1 = regdb_transaction_cancel();
|
|
if (!W_ERROR_IS_OK(err1)) {
|
|
DEBUG(0, ("reg_setvalue: Error cancelling transaction: %s\n", win_errstr(err1)));
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static WERROR reg_value_exists(struct registry_key *key, const char *name)
|
|
{
|
|
struct regval_blob *blob;
|
|
|
|
blob = regval_ctr_getvalue(key->values, name);
|
|
|
|
if (blob == NULL) {
|
|
return WERR_BADFILE;
|
|
} else {
|
|
return WERR_OK;
|
|
}
|
|
}
|
|
|
|
WERROR reg_deletevalue(struct registry_key *key, const char *name)
|
|
{
|
|
WERROR err;
|
|
|
|
if (!(key->key->access_granted & KEY_SET_VALUE)) {
|
|
return WERR_ACCESS_DENIED;
|
|
}
|
|
|
|
err = regdb_transaction_start();
|
|
if (!W_ERROR_IS_OK(err)) {
|
|
DEBUG(0, ("reg_deletevalue: Failed to start transaction: %s\n",
|
|
win_errstr(err)));
|
|
return err;
|
|
}
|
|
|
|
err = fill_value_cache(key);
|
|
if (!W_ERROR_IS_OK(err)) {
|
|
DEBUG(0, ("reg_deletevalue; Error filling value cache: %s\n",
|
|
win_errstr(err)));
|
|
goto done;
|
|
}
|
|
|
|
err = reg_value_exists(key, name);
|
|
if (!W_ERROR_IS_OK(err)) {
|
|
goto done;
|
|
}
|
|
|
|
regval_ctr_delvalue(key->values, name);
|
|
|
|
if (!store_reg_values(key->key, key->values)) {
|
|
TALLOC_FREE(key->values);
|
|
err = WERR_REG_IO_FAILURE;
|
|
DEBUG(0, ("reg_deletevalue: store_reg_values failed\n"));
|
|
goto done;
|
|
}
|
|
|
|
err = WERR_OK;
|
|
|
|
done:
|
|
if (W_ERROR_IS_OK(err)) {
|
|
err = regdb_transaction_commit();
|
|
if (!W_ERROR_IS_OK(err)) {
|
|
DEBUG(0, ("reg_deletevalue: Error committing transaction: %s\n", win_errstr(err)));
|
|
}
|
|
} else {
|
|
WERROR err1 = regdb_transaction_cancel();
|
|
if (!W_ERROR_IS_OK(err1)) {
|
|
DEBUG(0, ("reg_deletevalue: Error cancelling transaction: %s\n", win_errstr(err1)));
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
WERROR reg_getkeysecurity(TALLOC_CTX *mem_ctx, struct registry_key *key,
|
|
struct security_descriptor **psecdesc)
|
|
{
|
|
return regkey_get_secdesc(mem_ctx, key->key, psecdesc);
|
|
}
|
|
|
|
WERROR reg_setkeysecurity(struct registry_key *key,
|
|
struct security_descriptor *psecdesc)
|
|
{
|
|
return regkey_set_secdesc(key->key, psecdesc);
|
|
}
|
|
|
|
WERROR reg_getversion(uint32_t *version)
|
|
{
|
|
if (version == NULL) {
|
|
return WERR_INVALID_PARAM;
|
|
}
|
|
|
|
*version = 0x00000005; /* Windows 2000 registry API version */
|
|
return WERR_OK;
|
|
}
|
|
|
|
/**********************************************************************
|
|
* Higher level utility functions
|
|
**********************************************************************/
|
|
|
|
WERROR reg_deleteallvalues(struct registry_key *key)
|
|
{
|
|
WERROR err;
|
|
int i;
|
|
|
|
if (!(key->key->access_granted & KEY_SET_VALUE)) {
|
|
return WERR_ACCESS_DENIED;
|
|
}
|
|
|
|
if (!W_ERROR_IS_OK(err = fill_value_cache(key))) {
|
|
return err;
|
|
}
|
|
|
|
for (i=0; i < regval_ctr_numvals(key->values); i++) {
|
|
struct regval_blob *blob;
|
|
blob = regval_ctr_specific_value(key->values, i);
|
|
regval_ctr_delvalue(key->values, regval_name(blob));
|
|
}
|
|
|
|
if (!store_reg_values(key->key, key->values)) {
|
|
TALLOC_FREE(key->values);
|
|
return WERR_REG_IO_FAILURE;
|
|
}
|
|
|
|
return WERR_OK;
|
|
}
|
|
|
|
/*
|
|
* Utility function to delete a registry key with all its subkeys.
|
|
* Note that reg_deletekey returns ACCESS_DENIED when called on a
|
|
* key that has subkeys.
|
|
*/
|
|
static WERROR reg_deletekey_recursive_internal(struct registry_key *parent,
|
|
const char *path,
|
|
bool del_key, bool lazy)
|
|
{
|
|
WERROR werr = WERR_OK;
|
|
struct registry_key *key;
|
|
char *subkey_name = NULL;
|
|
uint32 i;
|
|
TALLOC_CTX *mem_ctx = talloc_stackframe();
|
|
|
|
DEBUG(5, ("reg_deletekey_recursive_internal: deleting '%s' from '%s'\n",
|
|
path, parent->key->name));
|
|
|
|
/* recurse through subkeys first */
|
|
werr = reg_openkey(mem_ctx, parent, path, REG_KEY_ALL, &key);
|
|
if (!W_ERROR_IS_OK(werr)) {
|
|
DEBUG(3, ("reg_deletekey_recursive_internal: error opening "
|
|
"subkey '%s' of '%s': '%s'\n",
|
|
path, parent->key->name, win_errstr(werr)));
|
|
goto done;
|
|
}
|
|
|
|
werr = fill_subkey_cache(key);
|
|
W_ERROR_NOT_OK_GOTO_DONE(werr);
|
|
|
|
/*
|
|
* loop from top to bottom for perfomance:
|
|
* this way, we need to rehash the regsubkey containers less
|
|
*/
|
|
for (i = regsubkey_ctr_numkeys(key->subkeys) ; i > 0; i--) {
|
|
subkey_name = regsubkey_ctr_specific_key(key->subkeys, i-1);
|
|
werr = reg_deletekey_recursive_internal(key, subkey_name, true, del_key);
|
|
W_ERROR_NOT_OK_GOTO_DONE(werr);
|
|
}
|
|
|
|
if (del_key) {
|
|
/* now delete the actual key */
|
|
werr = reg_deletekey_internal(mem_ctx, parent, path, lazy);
|
|
}
|
|
|
|
done:
|
|
|
|
DEBUG(5, ("reg_deletekey_recursive_internal: done deleting '%s' from "
|
|
"'%s': %s\n",
|
|
path, parent->key->name, win_errstr(werr)));
|
|
TALLOC_FREE(mem_ctx);
|
|
return werr;
|
|
}
|
|
|
|
static WERROR reg_deletekey_recursive_trans(struct registry_key *parent,
|
|
const char *path,
|
|
bool del_key)
|
|
{
|
|
WERROR werr;
|
|
|
|
werr = regdb_transaction_start();
|
|
if (!W_ERROR_IS_OK(werr)) {
|
|
DEBUG(0, ("reg_deletekey_recursive_trans: "
|
|
"error starting transaction: %s\n",
|
|
win_errstr(werr)));
|
|
return werr;
|
|
}
|
|
|
|
werr = reg_deletekey_recursive_internal(parent, path, del_key, false);
|
|
|
|
if (!W_ERROR_IS_OK(werr)) {
|
|
WERROR werr2;
|
|
|
|
DEBUG(1, (__location__ " failed to delete key '%s' from key "
|
|
"'%s': %s\n", path, parent->key->name,
|
|
win_errstr(werr)));
|
|
|
|
werr2 = regdb_transaction_cancel();
|
|
if (!W_ERROR_IS_OK(werr2)) {
|
|
DEBUG(0, ("reg_deletekey_recursive_trans: "
|
|
"error cancelling transaction: %s\n",
|
|
win_errstr(werr2)));
|
|
/*
|
|
* return the original werr or the
|
|
* error from cancelling the transaction?
|
|
*/
|
|
}
|
|
} else {
|
|
werr = regdb_transaction_commit();
|
|
if (!W_ERROR_IS_OK(werr)) {
|
|
DEBUG(0, ("reg_deletekey_recursive_trans: "
|
|
"error committing transaction: %s\n",
|
|
win_errstr(werr)));
|
|
} else {
|
|
DEBUG(5, ("reg_reletekey_recursive_trans: deleted key '%s' from '%s'\n",
|
|
path, parent->key->name));
|
|
|
|
}
|
|
}
|
|
|
|
return werr;
|
|
}
|
|
|
|
WERROR reg_deletekey_recursive(struct registry_key *parent,
|
|
const char *path)
|
|
{
|
|
return reg_deletekey_recursive_trans(parent, path, true);
|
|
}
|
|
|
|
WERROR reg_deletesubkeys_recursive(struct registry_key *parent,
|
|
const char *path)
|
|
{
|
|
return reg_deletekey_recursive_trans(parent, path, false);
|
|
}
|
|
|