GTASA Cheat Input Disable

nocheat.c

/*
 * Prevents you from using cheat codes like HESOYAM, DDDDDDDAAAAAADWD, ...
 * Only tested on gta-sa.exe US 1.0 HOODLUM and COMPACT.
 * Please change address at line 13 if you're not using US v1.0 executable
 *
 * Compile with
 * clang -m32 -shared -o nocheat.asi nocheat.c
 */

#define WIN32_LEAN_AND_MEAN
#include <windows.h>

int setCheatEnable(int enable)
{
	static unsigned char *address = (unsigned char *) 0x438480;
	DWORD oldProt, temp;

	if (VirtualProtect(address, 1, PAGE_READWRITE, &oldProt))
		*address = enable ? 0xC3 : 0xA0;
	else
		return 0;

	VirtualProtect(address, 1, oldProt, &temp);
	return 1;
}

int __stdcall DllMain(HINSTANCE _, DWORD reason, LPVOID __)
{
	return setCheatEnable(reason == DLL_PROCESS_ATTACH || reason == DLL_THREAD_ATTACH);
}