F4MP/Client/main.cpp

#include <windows.h>
#include <vector>
#include <string>
#include <iostream>
#include "../Base/Logger.h"
#include "../Base/Protocol.h"

// --- UTILIDAD DE ESCANEO DE PATRONES (Para Next-Gen) ---
namespace Scanner {
    uintptr_t FindPattern(const char* signature) {
        static auto pattern_to_byte = [](const char* pattern) {
            auto bytes = std::vector<int>{};
            auto start = const_cast<char*>(pattern);
            auto end = const_cast<char*>(pattern) + strlen(pattern);
            for (auto current = start; current < end; ++current) {
                if (*current == '?') {
                    ++current;
                    if (*current == '?') ++current;
                    bytes.push_back(-1);
                } else {
                    bytes.push_back(strtoul(current, &current, 16));
                }
            }
            return bytes;
        };

        uintptr_t base = (uintptr_t)GetModuleHandle(NULL);
        IMAGE_NT_HEADERS* ntHeaders = (IMAGE_NT_HEADERS*)(base + ((IMAGE_DOS_HEADER*)base)->e_lfanew);
        DWORD size = ntHeaders->OptionalHeader.SizeOfImage;
        auto patternBytes = pattern_to_byte(signature);
        uint8_t* scanBytes = reinterpret_cast<uint8_t*>(base);

        for (unsigned long i = 0; i < size - patternBytes.size(); ++i) {
            bool found = true;
            for (unsigned long j = 0; j < patternBytes.size(); ++j) {
                if (scanBytes[i + j] != patternBytes[j] && patternBytes[j] != -1) {
                    found = false;
                    break;
                }
            }
            if (found) return reinterpret_cast<uintptr_t>(&scanBytes[i]);
        }
        return 0;
    }
}

// --- L<>GICA PRINCIPAL ---
void InitializeF4MP() {
    Logger::Log("F4MP: Buscando Singleton del Jugador (Next-Gen)...");

    // Este es un ejemplo de un patr<74>n para encontrar el Player Singleton en Next-Gen
    // Nota: El patr<74>n real puede variar seg<65>n el parche, pero esta es la t<>cnica correcta.
    uintptr_t playerAddr = Scanner::FindPattern("48 8B 05 ? ? ? ? 48 8B D1 48 8b 48 08");
    
    if (playerAddr) {
        Logger::Log("F4MP: Patron encontrado en: " + std::to_string(playerAddr));
        // Aqu<71> seguir<69>a la l<>gica para calcular el offset relativo (RIP-relative)
    } else {
        Logger::Log("F4MP: No se pudo encontrar el patron del jugador.");
    }
}

DWORD WINAPI MainThread(LPVOID lpParam) {
    Logger::Log("=== F4MP CLIENTE CARGADO ===");
    
    InitializeF4MP();

    // Bucle para mantener la DLL viva. Pulsa FIN para descargarla.
    while (!(GetAsyncKeyState(VK_END) & 0x8000)) {
        Sleep(500);
    }

    Logger::Log("F4MP: Descargando...");
    FreeLibraryAndExitThread((HMODULE)lpParam, 0);
    return 0;
}

BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved) {
    if (ul_reason_for_call == DLL_PROCESS_ATTACH) {
        DisableThreadLibraryCalls(hModule);
        CreateThread(NULL, 0, MainThread, hModule, 0, NULL);
    }
    return TRUE;
}