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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 ruki
* @file registry_keys.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "registry_keys"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
/* //////////////////////////////////////////////////////////////////////////////////////
* types
*/
// the enum info type
typedef struct __xm_winos_registry_enum_info_t {
lua_State *lua;
HKEY key;
tb_int_t ok;
tb_char_t const *error;
tb_int_t count;
tb_wchar_t key_name[1024];
tb_char_t key_path_a[TB_PATH_MAXN];
} xm_winos_registry_enum_info_t;
/* //////////////////////////////////////////////////////////////////////////////////////
* private implementation
*/
static tb_void_t xm_winos_registry_enum_keys(xm_winos_registry_enum_info_t *info,
tb_wchar_t const *rootdir,
tb_long_t recursion) {
// enum keys
HKEY keynew = tb_null;
lua_State *lua = info->lua;
tb_wchar_t *key_path = tb_null;
tb_size_t key_path_maxn = TB_PATH_MAXN;
do {
// open registry key
if (RegOpenKeyExW(info->key, rootdir, 0, KEY_READ, &keynew) != ERROR_SUCCESS && keynew) {
info->ok = -1;
info->error = "open registry key failed";
break;
}
// query keys
DWORD key_name_num = 0;
DWORD key_name_maxn = 0;
if (RegQueryInfoKeyW(keynew,
tb_null,
tb_null,
tb_null,
&key_name_num,
&key_name_maxn,
tb_null,
tb_null,
tb_null,
tb_null,
tb_null,
tb_null) != ERROR_SUCCESS) {
// cannot query this key, we ignore it
break;
}
key_name_maxn++; // add `\0`
// ensure enough key path buffer
if (key_name_maxn > tb_arrayn(info->key_name)) {
info->ok = -1;
info->error = "no enough key path buffer";
break;
}
// init key path
key_path = (tb_wchar_t *)tb_malloc(key_path_maxn * sizeof(tb_wchar_t));
if (!key_path) {
info->ok = -1;
info->error = "no enough key path buffer";
break;
}
// get all keys
DWORD i = 0;
for (i = 0; i < key_name_num && info->ok > 0; i++) {
// get key name
info->key_name[0] = L'\0';
DWORD key_name_size = tb_arrayn(info->key_name);
if (RegEnumKeyExW(keynew, i, info->key_name, &key_name_size, tb_null, tb_null, tb_null, tb_null) !=
ERROR_SUCCESS) {
info->ok = -1;
info->error = "get registry key failed";
break;
}
// get key path
tb_swprintf(key_path, key_path_maxn, L"%s\\%s", rootdir, info->key_name);
// get key path (mbs)
tb_size_t key_path_a_size = tb_wtoa(info->key_path_a, key_path, sizeof(info->key_path_a));
if (key_path_a_size == -1) {
info->ok = -1;
info->error = "convert registry key path failed";
break;
}
// do callback(key_name)
lua_pushvalue(lua, 4);
lua_pushlstring(lua, info->key_path_a, key_path_a_size);
lua_call(lua, 1, 1);
info->count++;
// is continue?
tb_bool_t is_continue = lua_toboolean(lua, -1);
lua_pop(lua, 1);
if (!is_continue) {
info->ok = 0;
break;
}
// enum all subkeys
if (recursion > 0 || recursion < 0) {
xm_winos_registry_enum_keys(info, key_path, recursion > 0 ? recursion - 1 : recursion);
}
}
} while (0);
// exit registry key
if (keynew) {
RegCloseKey(keynew);
}
keynew = tb_null;
// free key path
if (key_path) {
tb_free(key_path);
}
key_path = tb_null;
}
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
/* get registry keys
*
* local count, errors = winos.registry_keys("HKEY_LOCAL_MACHINE",
* "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\AeDebug",
* function (key_path)
* return true -- continue or break
* end)
*/
tb_int_t xm_winos_registry_keys(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_long_t recursion = (tb_long_t)lua_tointeger(lua, 3);
tb_bool_t is_function = lua_isfunction(lua, 4);
tb_check_return_val(rootkey && rootdir && is_function, 0);
// enum keys
tb_bool_t ok = tb_false;
tb_int_t count = 0;
HKEY key = tb_null;
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;
}
// do enum
tb_wchar_t rootdir_w[TB_PATH_MAXN];
if (tb_atow(rootdir_w, rootdir, TB_PATH_MAXN) == -1) {
lua_pushnil(lua);
lua_pushfstring(lua, "rootdir is too long: %s", rootdir);
break;
}
xm_winos_registry_enum_info_t info;
info.lua = lua;
info.key = key;
info.count = 0;
info.ok = tb_true;
info.error = tb_null;
xm_winos_registry_enum_keys(&info, rootdir_w, recursion);
count = info.count;
ok = info.ok >= 0;
if (!ok) {
lua_pushnil(lua);
lua_pushfstring(lua, "%s: %s\\%s", info.error ? info.error : "enum registry keys failed", rootkey, rootdir);
}
} while (0);
if (ok) {
lua_pushinteger(lua, count);
return 1;
} else {
return 2;
}
}
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