#define WIN32_LEAN_AND_MEAN #include <Windows.h> #include <TlHelp32.h> #include <filesystem> #include <sstream> #include <fstream> #include <Shlwapi.h> namespace fs = std::filesystem; extern "C" { __declspec(dllexport) DWORD AmdPowerXpressRequestHighPerformance = 0x00000001; __declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001; } HMODULE hLauncherModule; HMODULE hHookModule; HMODULE hTier0Module; wchar_t exePath[4096]; wchar_t buffer[8192]; DWORD GetProcessByName(std::wstring processName) { HANDLE snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0); PROCESSENTRY32 processSnapshotEntry = {0}; processSnapshotEntry.dwSize = sizeof(PROCESSENTRY32); if (snapshot == INVALID_HANDLE_VALUE) return 0; if (!Process32First(snapshot, &processSnapshotEntry)) return 0; while (Process32Next(snapshot, &processSnapshotEntry)) { if (!wcscmp(processSnapshotEntry.szExeFile, processName.c_str())) { CloseHandle(snapshot); return processSnapshotEntry.th32ProcessID; } } CloseHandle(snapshot); return 0; } bool GetExePathWide(wchar_t* dest, DWORD destSize) { if (!dest) return NULL; if (destSize < MAX_PATH) return NULL; DWORD length = GetModuleFileNameW(NULL, dest, destSize); return length && PathRemoveFileSpecW(dest); } FARPROC GetLauncherMain() { static FARPROC Launcher_LauncherMain; if (!Launcher_LauncherMain) Launcher_LauncherMain = GetProcAddress(hLauncherModule, "LauncherMain"); return Launcher_LauncherMain; } void LibraryLoadError(DWORD dwMessageId, const wchar_t* libName, const wchar_t* location) { char text[8192]; std::string message = std::system_category().message(dwMessageId); sprintf_s( text, "Failed to load the %ls at \"%ls\" (%lu):\n\n%hs\n\nMake sure you followed the Northstar installation instructions carefully " "before reaching out for help.", libName, location, dwMessageId, message.c_str()); if (dwMessageId == 126 && std::filesystem::exists(location)) { sprintf_s( text, "%s\n\nThe file at the specified location DOES exist, so this error indicates that one of its *dependencies* failed to be " "found.\n\nTry the following steps:\n1. Install Visual C++ 2022 Redistributable: " "https://aka.ms/vs/17/release/vc_redist.x64.exe\n2. Repair game files", text); } else if (!fs::exists("Titanfall2.exe") && (fs::exists("..\\Titanfall2.exe") || fs::exists("..\\..\\Titanfall2.exe"))) { auto curDir = std::filesystem::current_path().filename().string(); auto aboveDir = std::filesystem::current_path().parent_path().filename().string(); sprintf_s( text, "%s\n\nWe detected that in your case you have extracted the files into a *subdirectory* of your Titanfall 2 " "installation.\nPlease move all the files and folders from current folder (\"%s\") into the Titanfall 2 installation directory " "just above (\"%s\").\n\nPlease try out the above steps by yourself before reaching out to the community for support.", text, curDir.c_str(), aboveDir.c_str()); } else if (!fs::exists("Titanfall2.exe")) { sprintf_s( text, "%s\n\nRemember: you need to unpack the contents of this archive into your Titanfall 2 game installation directory, not just " "to any random folder.", text); } else if (fs::exists("Titanfall2.exe")) { sprintf_s( text, "%s\n\nTitanfall2.exe has been found in the current directory: is the game installation corrupted or did you not unpack all " "Northstar files here?", text); } MessageBoxA(GetForegroundWindow(), text, "Northstar Launcher Error", 0); } void EnsureOriginStarted() { if (GetProcessByName(L"Origin.exe") || GetProcessByName(L"EADesktop.exe")) return; // already started // unpacked exe will crash if origin isn't open on launch, so launch it // get origin path from registry, code here is reversed from OriginSDK.dll HKEY key; if (RegOpenKeyExA(HKEY_LOCAL_MACHINE, "SOFTWARE\\WOW6432Node\\Origin", 0, KEY_READ, &key) != ERROR_SUCCESS) { MessageBoxA(0, "Error: failed reading Origin path!", "Northstar Launcher Error", MB_OK); return; } char originPath[520]; DWORD originPathLength = 520; if (RegQueryValueExA(key, "ClientPath", 0, 0, (LPBYTE)&originPath, &originPathLength) != ERROR_SUCCESS) { MessageBoxA(0, "Error: failed reading Origin path!", "Northstar Launcher Error", MB_OK); return; } PROCESS_INFORMATION pi; memset(&pi, 0, sizeof(pi)); STARTUPINFO si; memset(&si, 0, sizeof(si)); CreateProcessA( originPath, (char*)"", NULL, NULL, false, CREATE_DEFAULT_ERROR_MODE | CREATE_NEW_PROCESS_GROUP, NULL, NULL, (LPSTARTUPINFOA)&si, &pi); printf("[*] Waiting for Origin...\n"); // wait for origin to be ready, this process is created when origin is ready enough to launch game without any errors while (!GetProcessByName(L"OriginClientService.exe") && !GetProcessByName(L"EADesktop.exe")) Sleep(200); CloseHandle(pi.hProcess); CloseHandle(pi.hThread); } void PrependPath() { wchar_t* pPath; size_t len; errno_t err = _wdupenv_s(&pPath, &len, L"PATH"); if (!err) { swprintf_s(buffer, L"PATH=%s\\bin\\x64_retail\\;%s", exePath, pPath); auto result = _wputenv(buffer); if (result == -1) { MessageBoxW( GetForegroundWindow(), L"Warning: could not prepend the current directory to app's PATH environment variable. Something may break because of " L"that.", L"Northstar Launcher Warning", 0); } free(pPath); } else { MessageBoxW( GetForegroundWindow(), L"Warning: could not get current PATH environment variable in order to prepend the current directory to it. Something may " L"break because of that.", L"Northstar Launcher Warning", 0); } } bool ShouldLoadNorthstar(int argc, char* argv[]) { bool loadNorthstar = true; for (int i = 0; i < argc; i++) if (!strcmp(argv[i], "-vanilla")) loadNorthstar = false; if (!loadNorthstar) return loadNorthstar; auto runNorthstarFile = std::ifstream("run_northstar.txt"); if (runNorthstarFile) { std::stringstream runNorthstarFileBuffer; runNorthstarFileBuffer << runNorthstarFile.rdbuf(); runNorthstarFile.close(); if (runNorthstarFileBuffer.str()._Starts_with("0")) loadNorthstar = false; } return loadNorthstar; } bool LoadNorthstar() { FARPROC Hook_Init = nullptr; { swprintf_s(buffer, L"%s\\Northstar.dll", exePath); hHookModule = LoadLibraryExW(buffer, 0i64, 8u); if (hHookModule) Hook_Init = GetProcAddress(hHookModule, "InitialiseNorthstar"); if (!hHookModule || Hook_Init == nullptr) { LibraryLoadError(GetLastError(), L"Northstar.dll", buffer); return false; } } ((bool (*)())Hook_Init)(); return true; } int main(int argc, char* argv[]) { // checked to avoid starting origin, Northstar.dll will check for -dedicated as well on its own bool noOriginStartup = false; for (int i = 0; i < argc; i++) if (!strcmp(argv[i], "-noOriginStartup") || !strcmp(argv[i], "-dedicated")) noOriginStartup = true; if (!noOriginStartup) { EnsureOriginStarted(); } { if (!GetExePathWide(exePath, sizeof(exePath))) { MessageBoxA( GetForegroundWindow(), "Failed getting game directory.\nThe game cannot continue and has to exit.", "Northstar Launcher Error", 0); return 1; } PrependPath(); printf("[*] Loading tier0.dll\n"); swprintf_s(buffer, L"%s\\bin\\x64_retail\\tier0.dll", exePath); hTier0Module = LoadLibraryExW(buffer, 0, LOAD_WITH_ALTERED_SEARCH_PATH); if (!hTier0Module) { LibraryLoadError(GetLastError(), L"tier0.dll", buffer); return 1; } bool loadNorthstar = ShouldLoadNorthstar(argc, argv); if (loadNorthstar) { printf("[*] Loading Northstar\n"); if (!LoadNorthstar()) return 1; } else printf("[*] Going to load the vanilla game\n"); printf("[*] Loading launcher.dll\n"); swprintf_s(buffer, L"%s\\bin\\x64_retail\\launcher.dll", exePath); hLauncherModule = LoadLibraryExW(buffer, 0, LOAD_WITH_ALTERED_SEARCH_PATH); if (!hLauncherModule) { LibraryLoadError(GetLastError(), L"launcher.dll", buffer); return 1; } } printf("[*] Launching the game...\n"); auto LauncherMain = GetLauncherMain(); if (!LauncherMain) MessageBoxA( GetForegroundWindow(), "Failed loading launcher.dll.\nThe game cannot continue and has to exit.", "Northstar Launcher Error", 0); // auto result = ((__int64(__fastcall*)())LauncherMain)(); // auto result = ((signed __int64(__fastcall*)(__int64))LauncherMain)(0i64); return ((int(/*__fastcall*/*)(HINSTANCE, HINSTANCE, LPSTR, int))LauncherMain)( NULL, NULL, NULL, 0); // the parameters aren't really used anyways }