2013-09-09 22:50:25 +02:00
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/*
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Minetest
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Copyright (C) 2013 PilzAdam <pilzadam@minetest.net>
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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 Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "lua_api/l_settings.h"
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#include "lua_api/l_internal.h"
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2014-09-06 02:08:51 +02:00
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#include "cpp_api/s_security.h"
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2013-09-09 22:50:25 +02:00
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#include "settings.h"
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#include "log.h"
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// garbage collector
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int LuaSettings::gc_object(lua_State* L)
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{
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LuaSettings* o = *(LuaSettings **)(lua_touserdata(L, 1));
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delete o;
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return 0;
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}
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// get(self, key) -> value
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int LuaSettings::l_get(lua_State* L)
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{
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NO_MAP_LOCK_REQUIRED;
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LuaSettings* o = checkobject(L, 1);
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std::string key = std::string(luaL_checkstring(L, 2));
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if (o->m_settings->exists(key)) {
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std::string value = o->m_settings->get(key);
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lua_pushstring(L, value.c_str());
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} else {
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lua_pushnil(L);
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}
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return 1;
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}
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// get_bool(self, key) -> boolean
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int LuaSettings::l_get_bool(lua_State* L)
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{
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NO_MAP_LOCK_REQUIRED;
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LuaSettings* o = checkobject(L, 1);
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std::string key = std::string(luaL_checkstring(L, 2));
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if (o->m_settings->exists(key)) {
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bool value = o->m_settings->getBool(key);
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lua_pushboolean(L, value);
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} else {
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lua_pushnil(L);
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}
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return 1;
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}
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// set(self, key, value)
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int LuaSettings::l_set(lua_State* L)
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{
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NO_MAP_LOCK_REQUIRED;
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LuaSettings* o = checkobject(L, 1);
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std::string key = std::string(luaL_checkstring(L, 2));
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const char* value = luaL_checkstring(L, 3);
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2014-12-12 06:44:17 +01:00
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if (!o->m_settings->set(key, value))
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throw LuaError("Invalid sequence found in setting parameters");
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2013-09-09 22:50:25 +02:00
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2014-12-12 06:44:17 +01:00
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return 0;
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2013-09-09 22:50:25 +02:00
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}
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// remove(self, key) -> success
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int LuaSettings::l_remove(lua_State* L)
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{
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NO_MAP_LOCK_REQUIRED;
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LuaSettings* o = checkobject(L, 1);
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std::string key = std::string(luaL_checkstring(L, 2));
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bool success = o->m_settings->remove(key);
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lua_pushboolean(L, success);
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return 1;
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}
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// get_names(self) -> {key1, ...}
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int LuaSettings::l_get_names(lua_State* L)
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{
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NO_MAP_LOCK_REQUIRED;
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LuaSettings* o = checkobject(L, 1);
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std::vector<std::string> keys = o->m_settings->getNames();
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lua_newtable(L);
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for (unsigned int i=0; i < keys.size(); i++)
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{
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lua_pushstring(L, keys[i].c_str());
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lua_rawseti(L, -2, i + 1);
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}
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return 1;
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}
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// write(self) -> success
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int LuaSettings::l_write(lua_State* L)
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{
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NO_MAP_LOCK_REQUIRED;
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LuaSettings* o = checkobject(L, 1);
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2016-12-05 20:59:15 +01:00
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if (!o->m_write_allowed) {
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throw LuaError("Settings: writing " + o->m_filename +
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" not allowed with mod security on.");
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}
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2013-09-09 22:50:25 +02:00
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bool success = o->m_settings->updateConfigFile(o->m_filename.c_str());
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lua_pushboolean(L, success);
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return 1;
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}
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// to_table(self) -> {[key1]=value1,...}
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int LuaSettings::l_to_table(lua_State* L)
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{
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NO_MAP_LOCK_REQUIRED;
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LuaSettings* o = checkobject(L, 1);
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std::vector<std::string> keys = o->m_settings->getNames();
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lua_newtable(L);
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for (unsigned int i=0; i < keys.size(); i++)
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{
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lua_pushstring(L, o->m_settings->get(keys[i]).c_str());
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lua_setfield(L, -2, keys[i].c_str());
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}
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return 1;
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}
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2016-12-05 20:59:15 +01:00
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LuaSettings::LuaSettings(const char* filename, bool write_allowed)
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2013-09-09 22:50:25 +02:00
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{
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m_write_allowed = write_allowed;
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2013-09-09 22:50:25 +02:00
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m_filename = std::string(filename);
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m_settings = new Settings();
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m_settings->readConfigFile(m_filename.c_str());
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}
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LuaSettings::~LuaSettings()
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{
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delete m_settings;
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}
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void LuaSettings::Register(lua_State* L)
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{
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lua_newtable(L);
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int methodtable = lua_gettop(L);
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luaL_newmetatable(L, className);
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int metatable = lua_gettop(L);
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lua_pushliteral(L, "__metatable");
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lua_pushvalue(L, methodtable);
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lua_settable(L, metatable); // hide metatable from Lua getmetatable()
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lua_pushliteral(L, "__index");
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lua_pushvalue(L, methodtable);
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lua_settable(L, metatable);
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lua_pushliteral(L, "__gc");
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lua_pushcfunction(L, gc_object);
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lua_settable(L, metatable);
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lua_pop(L, 1); // drop metatable
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luaL_openlib(L, 0, methods, 0); // fill methodtable
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lua_pop(L, 1); // drop methodtable
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// Can be created from Lua (Settings(filename))
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lua_register(L, className, create_object);
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}
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// LuaSettings(filename)
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// Creates an LuaSettings and leaves it on top of stack
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int LuaSettings::create_object(lua_State* L)
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{
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NO_MAP_LOCK_REQUIRED;
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2016-12-21 10:20:06 +01:00
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bool write_allowed = true;
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2013-09-09 22:50:25 +02:00
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const char* filename = luaL_checkstring(L, 1);
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CHECK_SECURE_PATH_POSSIBLE_WRITE(L, filename, &write_allowed);
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LuaSettings* o = new LuaSettings(filename, write_allowed);
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*(void **)(lua_newuserdata(L, sizeof(void *))) = o;
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luaL_getmetatable(L, className);
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lua_setmetatable(L, -2);
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return 1;
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}
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LuaSettings* LuaSettings::checkobject(lua_State* L, int narg)
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{
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NO_MAP_LOCK_REQUIRED;
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luaL_checktype(L, narg, LUA_TUSERDATA);
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void *ud = luaL_checkudata(L, narg, className);
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if(!ud) luaL_typerror(L, narg, className);
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return *(LuaSettings**)ud; // unbox pointer
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}
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const char LuaSettings::className[] = "Settings";
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const luaL_reg LuaSettings::methods[] = {
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luamethod(LuaSettings, get),
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luamethod(LuaSettings, get_bool),
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luamethod(LuaSettings, set),
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luamethod(LuaSettings, remove),
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luamethod(LuaSettings, get_names),
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luamethod(LuaSettings, write),
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luamethod(LuaSettings, to_table),
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{0,0}
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};
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