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/*!A cross-platform build utility based on Lua
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright (C) 2015-present, Xmake Open Source Community.
*
* @author TitanSnow, ruki
* @file registry_query.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "registry_query"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
/* //////////////////////////////////////////////////////////////////////////////////////
* types
*/
// the RegGetValueW func type
typedef BOOL(WINAPI *xm_RegGetValueW_t)(
HKEY hkey, LPCWSTR lpSubKey, LPCWSTR lpValue, DWORD dwFlags, LPDWORD pdwType, PVOID pvData, LPDWORD pcbData);
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
/* query registry
*
* local value, errors = winos.registry_query("HKEY_LOCAL_MACHINE", "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\AeDebug", "Debugger")
*/
tb_int_t xm_winos_registry_query(lua_State *lua) {
tb_assert_and_check_return_val(lua, 0);
// get the arguments
tb_char_t const *rootkey = luaL_checkstring(lua, 1);
tb_char_t const *rootdir = luaL_checkstring(lua, 2);
tb_char_t const *valuename = luaL_checkstring(lua, 3);
tb_check_return_val(rootkey && rootdir && valuename, 0);
// query key-value
tb_bool_t ok = tb_false;
HKEY key = tb_null;
HKEY keynew = tb_null;
tb_char_t *value = tb_null;
tb_wchar_t *value_w = tb_null;
tb_size_t value_n = (tb_size_t)-1;
do {
// get registry rootkey
if (!tb_strcmp(rootkey, "HKEY_CLASSES_ROOT")) {
key = HKEY_CLASSES_ROOT;
} else if (!tb_strcmp(rootkey, "HKCR")) {
key = HKEY_CLASSES_ROOT;
} else if (!tb_strcmp(rootkey, "HKEY_CURRENT_CONFIG")) {
key = HKEY_CURRENT_CONFIG;
} else if (!tb_strcmp(rootkey, "HKCC")) {
key = HKEY_CURRENT_CONFIG;
} else if (!tb_strcmp(rootkey, "HKEY_CURRENT_USER")) {
key = HKEY_CURRENT_USER;
} else if (!tb_strcmp(rootkey, "HKCU")) {
key = HKEY_CURRENT_USER;
} else if (!tb_strcmp(rootkey, "HKEY_LOCAL_MACHINE")) {
key = HKEY_LOCAL_MACHINE;
} else if (!tb_strcmp(rootkey, "HKLM")) {
key = HKEY_LOCAL_MACHINE;
} else if (!tb_strcmp(rootkey, "HKEY_USERS")) {
key = HKEY_USERS;
} else {
lua_pushnil(lua);
lua_pushfstring(lua, "invalid registry rootkey: %s", rootkey);
break;
}
// convert rootdir to wide characters
tb_wchar_t rootdir_w[TB_PATH_MAXN];
if (tb_atow(rootdir_w, rootdir, TB_PATH_MAXN) == (tb_size_t)-1) {
lua_pushnil(lua);
lua_pushfstring(lua, "invalid registry rootkey:: %s", rootdir);
break;
}
// convert valuename to wide characters
tb_wchar_t valuename_w[TB_PATH_MAXN];
if (tb_atow(valuename_w, valuename, TB_PATH_MAXN) == (tb_size_t)-1) {
lua_pushnil(lua);
lua_pushfstring(lua, "invalid registry valuename: %s", valuename);
break;
}
// attempt to load RegGetValueW
static xm_RegGetValueW_t s_RegGetValueW = tb_null;
if (!s_RegGetValueW) {
// load the advapi32 module
tb_dynamic_ref_t module = (tb_dynamic_ref_t)GetModuleHandleA("advapi32.dll");
if (!module)
module = tb_dynamic_init("advapi32.dll");
if (module)
s_RegGetValueW = (xm_RegGetValueW_t)tb_dynamic_func(module, "RegGetValueW");
}
// get registry value
DWORD type = 0;
if (s_RegGetValueW) {
// get registry value size
DWORD valuesize_w = 0;
if (s_RegGetValueW(key, rootdir_w, valuename_w, RRF_RT_ANY, 0, tb_null, &valuesize_w) != ERROR_SUCCESS) {
lua_pushnil(lua);
lua_pushfstring(lua, "get registry value size failed: %s\\%s;%s", rootkey, rootdir, valuename);
break;
}
// make value buffer
DWORD valuesize = valuesize_w * 2;
value = (tb_char_t *)tb_malloc0(valuesize);
tb_assert_and_check_break(value);
value_w = (tb_wchar_t *)tb_malloc0(valuesize_w);
tb_assert_and_check_break(value_w);
// get value result, we attempt to do not expand value if get failed
type = 0;
if (s_RegGetValueW(key, rootdir_w, valuename_w, RRF_RT_ANY, &type, (PVOID)value_w, &valuesize_w) !=
ERROR_SUCCESS &&
s_RegGetValueW(
key, rootdir_w, valuename_w, RRF_RT_ANY | RRF_NOEXPAND, &type, (PVOID)value_w, &valuesize_w) !=
ERROR_SUCCESS) {
lua_pushnil(lua);
lua_pushfstring(lua, "get registry value failed: %s\\%s;%s", rootkey, rootdir, valuename);
break;
}
value_n = tb_wtoa(value, value_w, valuesize);
if (value_n == (tb_size_t)-1) {
lua_pushnil(lua);
lua_pushfstring(lua, "wtoa registry value failed: %s\\%s;%s", rootkey, rootdir, valuename);
break;
}
} else {
// open registry key
if (RegOpenKeyExW(key, rootdir_w, 0, KEY_QUERY_VALUE, &keynew) != ERROR_SUCCESS && keynew) {
lua_pushnil(lua);
lua_pushfstring(lua, "open registry key failed: %s\\%s", rootkey, rootdir);
break;
}
// get registry value size
DWORD valuesize_w = 0;
if (RegQueryValueExW(keynew, valuename_w, tb_null, tb_null, tb_null, &valuesize_w) != ERROR_SUCCESS) {
lua_pushnil(lua);
lua_pushfstring(lua, "get registry value size failed: %s\\%s;%s", rootkey, rootdir, valuename);
break;
}
// make value buffer
DWORD valuesize = valuesize_w * 2;
value = (tb_char_t *)tb_malloc0(valuesize);
tb_assert_and_check_break(value);
value_w = (tb_wchar_t *)tb_malloc0(valuesize_w);
tb_assert_and_check_break(value_w);
// get value result
type = 0;
if (RegQueryValueExW(keynew, valuename_w, tb_null, &type, (LPBYTE)value_w, &valuesize_w) != ERROR_SUCCESS) {
lua_pushnil(lua);
lua_pushfstring(lua, "get registry value failed: %s\\%s;%s", rootkey, rootdir, valuename);
break;
}
value_n = tb_wtoa(value, value_w, valuesize);
if (value_n == (tb_size_t)-1) {
lua_pushnil(lua);
lua_pushfstring(lua, "wtoa registry value failed: %s\\%s;%s", rootkey, rootdir, valuename);
break;
}
}
// save result
switch (type) {
case REG_SZ:
case REG_EXPAND_SZ:
lua_pushlstring(lua, value, value_n);
ok = tb_true;
break;
case REG_DWORD:
lua_pushfstring(lua, "%d", *((tb_int_t *)value));
ok = tb_true;
break;
case REG_QWORD:
lua_pushfstring(lua, "%lld", *((tb_int64_t *)value));
ok = tb_true;
break;
default:
lua_pushnil(lua);
lua_pushfstring(lua, "unsupported registry value type: %d", type);
break;
}
} while (0);
// exit registry key
if (keynew) {
RegCloseKey(keynew);
}
keynew = tb_null;
// exit value
if (value) {
tb_free(value);
}
value = tb_null;
if (value_w) {
tb_free(value_w);
}
value_w = tb_null;
return ok ? 1 : 2;
}
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