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#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[2048];
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.", libName, location, dwMessageId, message.c_str());
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!", "", 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!", "", 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 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 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();
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, 0i64, 8u);
if (!hLauncherModule)
{
LibraryLoadError(GetLastError(), L"launcher.dll", buffer);
return 1;
}
printf("[*] Loading tier0.dll\n");
// this makes zero sense given tier0.dll is already loaded via imports on launcher.dll, but we do it for full consistency with original launcher exe
// and to also let load callbacks in Northstar work for tier0.dll
swprintf_s(buffer, L"%s\\bin\\x64_retail\\tier0.dll", exePath);
hTier0Module = LoadLibraryW(buffer);
if (!hTier0Module)
{
LibraryLoadError(GetLastError(), L"tier0.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
}
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