3 Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
23 #include "cpp_api/s_base.h"
26 #define CHECK_SECURE_PATH(L, path) \
27 if (!ScriptApiSecurity::checkPath(L, path)) { \
28 throw LuaError(std::string("Attempt to access external file ") + \
29 path + " with mod security on."); \
31 #define CHECK_SECURE_PATH_OPTIONAL(L, path) \
32 if (ScriptApiSecurity::isSecure(L)) { \
33 CHECK_SECURE_PATH(L, path); \
37 class ScriptApiSecurity : virtual public ScriptApiBase
40 // Sets up security on the ScriptApi's Lua state
41 void initializeSecurity();
42 // Checks if the Lua state has been secured
43 static bool isSecure(lua_State *L);
44 // Loads a file as Lua code safely (doesn't allow bytecode).
45 static bool safeLoadFile(lua_State *L, const char *path);
46 // Checks if mods are allowed to read and write to the path
47 static bool checkPath(lua_State *L, const char *path);
50 // Syntax: "sl_" <Library name or 'g' (global)> '_' <Function name>
51 // (sl stands for Secure Lua)
53 static int sl_g_dofile(lua_State *L);
54 static int sl_g_load(lua_State *L);
55 static int sl_g_loadfile(lua_State *L);
56 static int sl_g_loadstring(lua_State *L);
57 static int sl_g_require(lua_State *L);
59 static int sl_io_open(lua_State *L);
60 static int sl_io_input(lua_State *L);
61 static int sl_io_output(lua_State *L);
62 static int sl_io_lines(lua_State *L);
64 static int sl_os_rename(lua_State *L);
65 static int sl_os_remove(lua_State *L);