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/*
* Unix SMB/CIFS implementation.
* Virtual Windows Registry Layer
* Copyright (C) Volker Lendecke 2006
* Copyright (C) Michael Adam 2007-2010
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/*
* Higher level utility functions on top of reg_api.c
*/
#include "includes.h"
#include "registry.h"
#include "reg_api.h"
#include "reg_api_util.h"
#include "libcli/registry/util_reg.h"
/**
* Utility function to open a complete registry path including the hive prefix.
*/
WERROR reg_open_path(TALLOC_CTX *mem_ctx, const char *orig_path,
uint32 desired_access, const struct security_token *token,
struct registry_key **pkey)
{
struct registry_key *hive, *key;
char *path, *p;
WERROR err;
if (!(path = SMB_STRDUP(orig_path))) {
return WERR_NOMEM;
}
p = strchr(path, '\\');
if ((p == NULL) || (p[1] == '\0')) {
/*
* No key behind the hive, just return the hive
*/
err = reg_openhive(mem_ctx, path, desired_access, token,
&hive);
if (!W_ERROR_IS_OK(err)) {
SAFE_FREE(path);
return err;
}
SAFE_FREE(path);
*pkey = hive;
return WERR_OK;
}
*p = '\0';
err = reg_openhive(mem_ctx, path, KEY_ENUMERATE_SUB_KEYS, token,
&hive);
if (!W_ERROR_IS_OK(err)) {
SAFE_FREE(path);
return err;
}
err = reg_openkey(mem_ctx, hive, p+1, desired_access, &key);
TALLOC_FREE(hive);
SAFE_FREE(path);
if (!W_ERROR_IS_OK(err)) {
return err;
}
*pkey = key;
return WERR_OK;
}
/**
* Utility function to create a registry key without opening the hive
* before. Assumes the hive already exists.
*/
WERROR reg_create_path(TALLOC_CTX *mem_ctx, const char *orig_path,
uint32 desired_access,
const struct security_token *token,
enum winreg_CreateAction *paction,
struct registry_key **pkey)
{
struct registry_key *hive;
char *path, *p;
WERROR err;
if (!(path = SMB_STRDUP(orig_path))) {
return WERR_NOMEM;
}
p = strchr(path, '\\');
if ((p == NULL) || (p[1] == '\0')) {
/*
* No key behind the hive, just return the hive
*/
err = reg_openhive(mem_ctx, path, desired_access, token,
&hive);
if (!W_ERROR_IS_OK(err)) {
SAFE_FREE(path);
return err;
}
SAFE_FREE(path);
*pkey = hive;
*paction = REG_OPENED_EXISTING_KEY;
return WERR_OK;
}
*p = '\0';
err = reg_openhive(mem_ctx, path,
(strchr(p+1, '\\') != NULL) ?
KEY_ENUMERATE_SUB_KEYS : KEY_CREATE_SUB_KEY,
token, &hive);
if (!W_ERROR_IS_OK(err)) {
SAFE_FREE(path);
return err;
}
err = reg_createkey(mem_ctx, hive, p+1, desired_access, pkey, paction);
SAFE_FREE(path);
TALLOC_FREE(hive);
return err;
}
/*
* Utility function to recursively delete a registry key without opening the
* hive before. Will not delete a hive.
*/
WERROR reg_delete_path(const struct security_token *token,
const char *orig_path)
{
struct registry_key *hive;
char *path, *p;
WERROR err;
if (!(path = SMB_STRDUP(orig_path))) {
return WERR_NOMEM;
}
p = strchr(path, '\\');
if ((p == NULL) || (p[1] == '\0')) {
SAFE_FREE(path);
return WERR_INVALID_PARAM;
}
*p = '\0';
err = reg_openhive(NULL, path,
(strchr(p+1, '\\') != NULL) ?
KEY_ENUMERATE_SUB_KEYS : KEY_CREATE_SUB_KEY,
token, &hive);
if (!W_ERROR_IS_OK(err)) {
SAFE_FREE(path);
return err;
}
err = reg_deletekey_recursive(hive, p+1);
SAFE_FREE(path);
TALLOC_FREE(hive);
return err;
}
struct registry_value *registry_value_dw(TALLOC_CTX *mem_ctx, uint32_t dw)
{
struct registry_value *ret;
ret = talloc_zero(mem_ctx, struct registry_value);
if (ret == NULL) {
return NULL;
}
ret->data = data_blob_talloc(ret, NULL, sizeof(uint32_t));
if (ret->data.data == NULL) {
talloc_free(ret);
return NULL;
}
ret->type = REG_DWORD;
SIVAL(ret->data.data, 0, dw);
return ret;
}
struct registry_value *registry_value_sz(TALLOC_CTX *mem_ctx, const char *str)
{
struct registry_value *ret;
ret = talloc_zero(mem_ctx, struct registry_value);
if (ret == NULL) {
return NULL;
}
if (!push_reg_sz(ret, &ret->data, str)) {
talloc_free(ret);
return NULL;
}
ret->type = REG_SZ;
return ret;
}
struct registry_value *registry_value_multi_sz(TALLOC_CTX *mem_ctx, const char **str)
{
struct registry_value *ret;
ret = talloc_zero(mem_ctx, struct registry_value);
if (ret == NULL) {
return NULL;
}
if (!push_reg_multi_sz(ret, &ret->data, str)) {
talloc_free(ret);
return NULL;
}
ret->type = REG_MULTI_SZ;
return ret;
}
int registry_value_cmp(const struct registry_value* v1, const struct registry_value* v2)
{
if (v1->type == v2->type) {
return data_blob_cmp(&v1->data, &v2->data);
}
return v1->type - v2->type;
}
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