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/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#pragma once

#include "common/c_types.h"
#include "common/c_internal.h"
#include "common/helper.h"
#include "gamedef.h"
#include <unordered_map>

extern "C" {
#include <lua.h>
#include <lauxlib.h>
}

#ifndef SERVER
class Client;
class GUIEngine;
#endif

class ScriptApiBase;
class Server;
class Environment;
class ServerInventoryManager;

class ModApiBase : protected LuaHelper {
public:
	static ScriptApiBase*   getScriptApiBase(lua_State *L);
	static Server*          getServer(lua_State *L);
	static ServerInventoryManager *getServerInventoryMgr(lua_State *L);
	#ifndef SERVER
	static Client*          getClient(lua_State *L);
	static GUIEngine*       getGuiEngine(lua_State *L);
	#endif // !SERVER

	static IGameDef*        getGameDef(lua_State *L);

	static Environment*     getEnv(lua_State *L);

	// When we are not loading the mod, this function returns "."
	static std::string      getCurrentModPath(lua_State *L);

	// Get an arbitrary subclass of ScriptApiBase
	// by using dynamic_cast<> on getScriptApiBase()
	template<typename T>
	static T* getScriptApi(lua_State *L) {
		ScriptApiBase *scriptIface = getScriptApiBase(L);
		T *scriptIfaceDowncast = dynamic_cast<T*>(scriptIface);
		if (!scriptIfaceDowncast) {
			throw LuaError("Requested unavailable ScriptApi - core engine bug!");
		}
		return scriptIfaceDowncast;
	}

	static bool registerFunction(lua_State *L,
			const char* name,
			lua_CFunction func,
			int top);

	/**
	 * A wrapper for deprecated functions.
	 *
	 * When called, handles the deprecation according to user settings and then calls `func`.
	 *
	 * @throws Lua Error if required by the user settings.
	 *
	 * @param L Lua state
	 * @param good Name of good function/method
	 * @param bad Name of deprecated function/method
	 * @param func Actual implementation of function
	 * @return value from `func`
	 */
	static int l_deprecated_function(lua_State *L, const char *good, const char *bad, lua_CFunction func);
};
hl opt">(); } void fatal_error_fn(const char *msg, const char *file, unsigned int line, const char *function) { #if USE_CURSES g_term_console.stopAndWaitforThread(); #endif errorstream << std::endl << "In thread " << std::hex << std::this_thread::get_id() << ":" << std::endl; errorstream << file << ":" << line << ": " << function << ": A fatal error occured: " << msg << std::endl; abort(); } #ifdef _MSC_VER const char *Win32ExceptionCodeToString(DWORD exception_code) { switch (exception_code) { case EXCEPTION_ACCESS_VIOLATION: return "Access violation"; case EXCEPTION_DATATYPE_MISALIGNMENT: return "Misaligned data access"; case EXCEPTION_BREAKPOINT: return "Breakpoint reached"; case EXCEPTION_SINGLE_STEP: return "Single debug step"; case EXCEPTION_ARRAY_BOUNDS_EXCEEDED: return "Array access out of bounds"; case EXCEPTION_FLT_DENORMAL_OPERAND: return "Denormal floating point operand"; case EXCEPTION_FLT_DIVIDE_BY_ZERO: return "Floating point division by zero"; case EXCEPTION_FLT_INEXACT_RESULT: return "Inaccurate floating point result"; case EXCEPTION_FLT_INVALID_OPERATION: return "Invalid floating point operation"; case EXCEPTION_FLT_OVERFLOW: return "Floating point exponent overflow"; case EXCEPTION_FLT_STACK_CHECK: return "Floating point stack overflow or underflow"; case EXCEPTION_FLT_UNDERFLOW: return "Floating point exponent underflow"; case EXCEPTION_INT_DIVIDE_BY_ZERO: return "Integer division by zero"; case EXCEPTION_INT_OVERFLOW: return "Integer overflow"; case EXCEPTION_PRIV_INSTRUCTION: return "Privileged instruction executed"; case EXCEPTION_IN_PAGE_ERROR: return "Could not access or load page"; case EXCEPTION_ILLEGAL_INSTRUCTION: return "Illegal instruction encountered"; case EXCEPTION_NONCONTINUABLE_EXCEPTION: return "Attempted to continue after fatal exception"; case EXCEPTION_STACK_OVERFLOW: return "Stack overflow"; case EXCEPTION_INVALID_DISPOSITION: return "Invalid disposition returned to the exception dispatcher"; case EXCEPTION_GUARD_PAGE: return "Attempted guard page access"; case EXCEPTION_INVALID_HANDLE: return "Invalid handle"; } return "Unknown exception"; } long WINAPI Win32ExceptionHandler(struct _EXCEPTION_POINTERS *pExceptInfo) { char buf[512]; MINIDUMP_EXCEPTION_INFORMATION mdei; MINIDUMP_USER_STREAM_INFORMATION mdusi; MINIDUMP_USER_STREAM mdus; bool minidump_created = false; std::string dumpfile = porting::path_user + DIR_DELIM PROJECT_NAME ".dmp"; std::string version_str(PROJECT_NAME " "); version_str += g_version_hash; HANDLE hFile = CreateFileA(dumpfile.c_str(), GENERIC_WRITE, FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); if (hFile == INVALID_HANDLE_VALUE) goto minidump_failed; if (SetEndOfFile(hFile) == FALSE) goto minidump_failed; mdei.ClientPointers = NULL; mdei.ExceptionPointers = pExceptInfo; mdei.ThreadId = GetCurrentThreadId(); mdus.Type = CommentStreamA; mdus.BufferSize = version_str.size(); mdus.Buffer = (PVOID)version_str.c_str(); mdusi.UserStreamArray = &mdus; mdusi.UserStreamCount = 1; if (MiniDumpWriteDump(GetCurrentProcess(), GetCurrentProcessId(), hFile, MiniDumpNormal, &mdei, &mdusi, NULL) == FALSE) goto minidump_failed; minidump_created = true; minidump_failed: CloseHandle(hFile); DWORD excode = pExceptInfo->ExceptionRecord->ExceptionCode; _snprintf(buf, sizeof(buf), " >> === FATAL ERROR ===\n" " >> %s (Exception 0x%08X) at 0x%p\n", Win32ExceptionCodeToString(excode), excode, pExceptInfo->ExceptionRecord->ExceptionAddress); dstream << buf; if (minidump_created) dstream << " >> Saved dump to " << dumpfile << std::endl; else dstream << " >> Failed to save dump" << std::endl; return EXCEPTION_EXECUTE_HANDLER; } #endif void debug_set_exception_handler() { #ifdef _MSC_VER SetUnhandledExceptionFilter(Win32ExceptionHandler); #endif }