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- added first round of security sandboxing for lua scripts (disable the os library)

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This commit is contained in:
Mark Vejvoda
2012-10-11 05:17:37 +00:00
parent 8cc9c760e1
commit e3e3832070
4 changed files with 53 additions and 13 deletions
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40
source/glest_game/game/script_manager.cpp
View File

@@ -411,20 +411,36 @@ void ScriptManager::init(World* world, GameCamera *gameCamera, const XmlNode *ro
if(SystemFlags::getSystemSettingType(SystemFlags::debugLUA).enabled) SystemFlags::OutputDebug(SystemFlags::debugLUA,"In [%s::%s Line: %d]\n",__FILE__,__FUNCTION__,__LINE__);
// Setup global functions and vars here
luaScript.beginCall("global");
luaScript.endCall();
//call startup function
if(this->rootNode == NULL) {
luaScript.beginCall("startup");
try {
// Setup global functions and vars here
luaScript.beginCall("global");
luaScript.endCall();
}
else {
loadGame(this->rootNode);
this->rootNode = NULL;
}
//call startup function
if(this->rootNode == NULL) {
luaScript.beginCall("startup");
luaScript.endCall();
}
else {
loadGame(this->rootNode);
this->rootNode = NULL;
}
}
catch(const megaglest_runtime_error &ex) {
string sErrBuf = "";
//if(ex.wantStackTrace() == true) {
char szErrBuf[8096]="";
sprintf(szErrBuf,"In [%s::%s %d]",__FILE__,__FUNCTION__,__LINE__);
sErrBuf = string(szErrBuf) + string("\nerror [") + string(ex.what()) + string("]\n");
//}
SystemFlags::OutputDebug(SystemFlags::debugError,sErrBuf.c_str());
if(SystemFlags::getSystemSettingType(SystemFlags::debugSystem).enabled) SystemFlags::OutputDebug(SystemFlags::debugSystem,sErrBuf.c_str());
ScriptManager_STREFLOP_Wrapper streflopWrapper;
messageQueue.push_back(ScriptManagerMessage(sErrBuf.c_str(), "error"));
onMessageBoxOk(false);
}
if(SystemFlags::getSystemSettingType(SystemFlags::debugLUA).enabled) SystemFlags::OutputDebug(SystemFlags::debugLUA,"In [%s::%s Line: %d]\n",__FILE__,__FUNCTION__,__LINE__);
}

5
source/glest_game/main/main.cpp
View File

@@ -49,6 +49,7 @@
#include <locale.h>
#include "string_utils.h"
#include "auto_test.h"
#include "lua_script.h"
// To handle signal catching
#if defined(__GNUC__) && !defined(__MINGW32__) && !defined(__FreeBSD__) && !defined(BSD)
@@ -3206,6 +3207,10 @@ int glestMain(int argc, char** argv) {
Config &config = Config::getInstance();
setupGameItemPaths(argc, argv, &config);
if(config.getBool("DisableLuaSandbox","false") == true) {
LuaScript::setDisableSandbox(true);
}
Socket::setBroadCastPort(config.getInt("BroadcastPort",intToStr(Socket::getBroadCastPort()).c_str()));
Socket::disableNagle = config.getBool("DisableNagle","false");

4
source/shared_lib/include/lua/lua_script.h
View File

@@ -42,12 +42,16 @@ private:
string sandboxWrapperFunctionName;
string sandboxCode;
static bool disableSandbox;
void DumpGlobals();
public:
LuaScript();
~LuaScript();
static void setDisableSandbox(bool value) { disableSandbox = value; }
void loadCode(string code, string name);
void beginCall(string functionName);

17
source/shared_lib/sources/lua/lua_script.cpp
View File

@@ -45,6 +45,8 @@ public:
// class LuaScript
// =====================================================
bool LuaScript::disableSandbox = false;
LuaScript::LuaScript() {
Lua_STREFLOP_Wrapper streflopWrapper;
@@ -56,11 +58,24 @@ LuaScript::LuaScript() {
luaL_openlibs(luaState);
if(luaState==NULL){
if(luaState == NULL) {
throw megaglest_runtime_error("Can not allocate lua state");
}
argumentCount= -1;
if(disableSandbox == false) {
lua_getglobal(luaState, "os");
lua_pushnil(luaState);
lua_setfield(luaState, -2, "execute");
lua_pushnil(luaState);
lua_setfield(luaState, -2, "rename");
lua_pushnil(luaState);
lua_setfield(luaState, -2, "remove");
lua_pushnil(luaState);
lua_setfield(luaState, -2, "exit");
lua_pop(luaState, 1);
}
}
void LuaScript::DumpGlobals()