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Cube-World-Commands-Mod
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Switch to using callbacks

This commit is contained in:
ChrisMiuchiz 2018-10-21 19:04:25 -04:00 committed by GitHub
parent 628795ac24
commit da43ba373c
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 12 additions and 37 deletions
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49
main.cpp
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@ -25,37 +25,6 @@ DWORD defaultMessagePtr = (DWORD)&defaultMessage;
char msgObject[255]; char msgObject[255];
DWORD msgObjectPtr = (DWORD)&msgObject; DWORD msgObjectPtr = (DWORD)&msgObject;
_declspec(naked) void DLL_EXPORT ASMHandleMessage(){
asm("mov eax, [_base]");
asm("add eax, 0x36B1C8");
asm("mov eax, [eax]"); //eax points to gamecontroller
asm("mov eax, dword ptr [eax + 0x800A14]"); //eax points to ChatWidget
asm("mov eax, dword ptr [eax + 0x178]"); //get message size
asm("push eax");
asm("lea eax, [ebp - 0x128 + 0x4]");
asm("mov eax, [eax]"); //get message
asm("push eax");
asm("call [_HandleMessagePtr]");
asm("cmp eax, 0"); //message ptr
asm("je 0f");
asm("1:");
asm("mov ecx, [_base]"); //jump to end
asm("add ecx, 0x7E6BF");
asm("jmp ecx");
asm("0:"); //exit normally
asm("mov eax, [_base]"); //jump back
asm("add eax, 0x7E621");
asm("cmp dword ptr [edi + 0x8006CC], 0"); //original comparison
asm("jmp eax");
}
void DLL_EXPORT ASMPrintMessage(){ void DLL_EXPORT ASMPrintMessage(){
asm("push [_defaultMessagePtr]"); asm("push [_defaultMessagePtr]");
@ -125,10 +94,8 @@ void CommandHelpMessage(wchar_t* command, wchar_t* details){
PrintMessage(L"\n"); PrintMessage(L"\n");
} }
bool DLL_EXPORT HandleMessage(wchar_t buf[], unsigned int msg_size){ bool __stdcall DLL_EXPORT HandleMessage(wchar_t msg[], unsigned int msg_size){
wchar_t response[255]; wchar_t response[255];
wchar_t msg[1024] = { 0 };
memcpy(msg, buf, msg_size * 2); //the message should be null terminated
DWORD entityaddr = (DWORD)(base + 0x36b1c8); DWORD entityaddr = (DWORD)(base + 0x36b1c8);
entityaddr = *(DWORD*)entityaddr; entityaddr = *(DWORD*)entityaddr;
@ -225,6 +192,15 @@ void WriteJMP(BYTE* location, BYTE* newFunction){
VirtualProtect(location, 5, dwOldProtection, &dwOldProtection); VirtualProtect(location, 5, dwOldProtection, &dwOldProtection);
} }
typedef bool (__stdcall *ChatEventCallback)(wchar_t buf[], unsigned int msg_size);
typedef void (*RegisterChatEventCallback_t)(ChatEventCallback cb);
DWORD WINAPI DLL_EXPORT RegisterCallbacks(){
HMODULE modManagerDLL = LoadLibraryA("CallbackManager.dll");
auto RegisterChatEventCallback = (RegisterChatEventCallback_t)GetProcAddress(modManagerDLL, "RegisterChatEventCallback");
RegisterChatEventCallback((ChatEventCallback)HandleMessage);
return 0;
}
extern "C" DLL_EXPORT BOOL APIENTRY DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) extern "C" DLL_EXPORT BOOL APIENTRY DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
{ {
@ -233,10 +209,9 @@ extern "C" DLL_EXPORT BOOL APIENTRY DllMain(HINSTANCE hinstDLL, DWORD fdwReason,
{ {
case DLL_PROCESS_ATTACH: case DLL_PROCESS_ATTACH:
WriteJMP((BYTE*)(base + 0x7E61A), (BYTE*)&ASMHandleMessage); CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)RegisterCallbacks, 0, 0, NULL);
break; break;
;
} }
return TRUE; return TRUE;
} }