// a Modified version of ColdClientLoader originally written by Rat431 // https://github.com/Rat431/ColdAPI_Steam/tree/master/src/ColdClientLoader #include "common_helpers/common_helpers.hpp" #include "pe_helpers/pe_helpers.hpp" #include "dbg_log/dbg_log.hpp" // C RunTime Header Files #include #include #include #include #include #include #include #include #include #include static std::wstring IniFile{}; static const std::wstring dbg_file = pe_helpers::get_current_exe_path_w() + pe_helpers::get_current_exe_name_w() + L".log"; constexpr static const char STEAM_UNIVERSE[] = "Public"; constexpr static const char STEAM_URL_PROTOCOL[] = "URL:steam protocol"; const bool loader_is_32 = pe_helpers::is_module_32(GetModuleHandleW(NULL)); const std::wstring hklm_path(loader_is_32 ? L"SOFTWARE\\Valve\\Steam" : L"SOFTWARE\\WOW6432Node\\Valve\\Steam"); // Declare some variables to be used for Steam registry. const DWORD UserId = 0x03100004771F810D & 0xffffffff; const DWORD ProcessID = GetCurrentProcessId(); std::wstring ClientPath{}; std::wstring Client64Path{}; std::vector dlls_to_inject{}; std::wstring get_ini_value(LPCWSTR section, LPCWSTR key, LPCWSTR default_val = NULL) { std::vector buff(INT16_MAX); DWORD read_chars = GetPrivateProfileStringW(section, key, default_val, &buff[0], (DWORD)buff.size(), IniFile.c_str()); if (!read_chars) { return {}; } // "If neither lpAppName nor lpKeyName is NULL and the supplied destination buffer is too small to hold the requested string, the return value is equal to nSize minus one" int trials = 3; while ((read_chars == (buff.size() - 1)) && trials > 0) { buff.resize(buff.size() * 2); read_chars = GetPrivateProfileStringW(section, key, default_val, &buff[0], (DWORD)buff.size(), IniFile.c_str()); --trials; } return std::wstring(&buff[0], read_chars); } static std::vector get_pe_header(const std::wstring &filepath) { try { std::ifstream file(std::filesystem::path(filepath), std::ios::binary); if (!file.is_open()) throw; file.seekg(0, std::ios::beg); // 2MB is enough std::vector data(2 * 1024 * 1024, 0); file.read((char *)&data[0], data.size()); file.close(); return data; } catch(const std::exception& e) { dbg_log::write(std::string("Error reading PE header: ") + e.what()); return std::vector(); } } static std::vector collect_dlls_to_inject(const std::wstring &extra_dlls_folder, bool is_exe_32, std::wstring &failed_dlls) { const auto load_order_file = std::filesystem::path(extra_dlls_folder) / "load_order.txt"; std::vector dlls_to_inject{}; for (auto const& dir_entry : std::filesystem::recursive_directory_iterator(extra_dlls_folder, std::filesystem::directory_options::follow_directory_symlink)) { if (std::filesystem::is_directory(dir_entry.path())) continue; auto dll_path = dir_entry.path().wstring(); // ignore this file if it is the load order file if (common_helpers::str_cmp_insensitive(dll_path, load_order_file.wstring())) continue; auto dll_header = get_pe_header(dll_path); if (dll_header.empty()) { dbg_log::write(L"Failed to get PE header of dll: '" + dll_path + L"'"); failed_dlls += dll_path + L"\n"; continue; } bool is_dll_32 = pe_helpers::is_module_32((HMODULE)&dll_header[0]); bool is_dll_64 = pe_helpers::is_module_64((HMODULE)&dll_header[0]); if ((!is_dll_32 && !is_dll_64) || (is_dll_32 && is_dll_64)) { // ARM, or just a regular file dbg_log::write(L"Dll '" + dll_path + L"' is neither 32 nor 64 bit and will be ignored"); failed_dlls += dll_path + L"\n"; continue; } if (is_dll_32 == is_exe_32) { // same arch dlls_to_inject.push_back(dll_path); dbg_log::write(L"Dll '" + dll_path + L"' is valid"); } else { dbg_log::write(L"Dll '" + dll_path + L"' has a different arch than the exe and will be ignored"); failed_dlls += dll_path + L"\n"; } } bool only_specified = false; std::vector ordered_dlls_to_inject{}; { dbg_log::write(L"Searching for load order file: '" + load_order_file.wstring() + L"'"); auto f_order = std::wifstream(load_order_file, std::ios::in); if (f_order.is_open()) { only_specified = true; dbg_log::write(L"Reading load order file..."); std::wstring line{}; while (std::getline(f_order, line)) { auto abs = common_helpers::to_absolute(line, extra_dlls_folder); dbg_log::write(L"Load order line: '" + abs + L"'"); auto it = std::find_if(dlls_to_inject.begin(), dlls_to_inject.end(), [&abs](const std::wstring &dll_to_inject) { return common_helpers::str_cmp_insensitive(dll_to_inject, abs); }); if (it != dlls_to_inject.end()) { dbg_log::write("Found the dll specified by the load order line"); ordered_dlls_to_inject.push_back(*it); } } f_order.close(); } } if (only_specified) return ordered_dlls_to_inject; return dlls_to_inject; } static void to_bool_ini_val(std::wstring &val) { for (auto &c : val) { c = (wchar_t)std::tolower((int)c); } if (val != L"1" && val != L"y" && val != L"yes" && val != L"true") { val.clear(); } } bool orig_steam_hkcu = false; WCHAR OrgSteamCDir_hkcu[8192] = { 0 }; DWORD Size1_hkcu = _countof(OrgSteamCDir_hkcu); WCHAR OrgSteamCDir64_hkcu[8192] = { 0 }; DWORD Size2_hkcu = _countof(OrgSteamCDir64_hkcu); bool patch_registry_hkcu() { HKEY Registrykey = { 0 }; if (RegOpenKeyExW(HKEY_CURRENT_USER, L"Software\\Valve\\Steam\\ActiveProcess", 0, KEY_ALL_ACCESS, &Registrykey) == ERROR_SUCCESS) { orig_steam_hkcu = true; // Get original values to restore later. DWORD keyType = REG_SZ; RegQueryValueExW(Registrykey, L"SteamClientDll", 0, &keyType, (LPBYTE)&OrgSteamCDir_hkcu, &Size1_hkcu); RegQueryValueExW(Registrykey, L"SteamClientDll64", 0, &keyType, (LPBYTE)&OrgSteamCDir64_hkcu, &Size2_hkcu); dbg_log::write("Found previous registry entry (HKCU) for Steam"); } else if (RegCreateKeyExW(HKEY_CURRENT_USER, L"Software\\Valve\\Steam\\ActiveProcess", 0, 0, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &Registrykey, NULL) == ERROR_SUCCESS) { dbg_log::write("Created new registry entry (HKCU) for Steam"); } else { dbg_log::write("Unable to patch Registry (HKCU), error = " + std::to_string(GetLastError())); return false; } RegSetValueExA(Registrykey, "ActiveUser", NULL, REG_DWORD, (const BYTE *)&UserId, sizeof(DWORD)); RegSetValueExA(Registrykey, "pid", NULL, REG_DWORD, (const BYTE *)&ProcessID, sizeof(DWORD)); RegSetValueExW(Registrykey, L"SteamClientDll", NULL, REG_SZ, (const BYTE *)ClientPath.c_str(), (ClientPath.size() + 1) * sizeof(ClientPath[0])); RegSetValueExW(Registrykey, L"SteamClientDll64", NULL, REG_SZ, (const BYTE *)Client64Path.c_str(), (Client64Path.size() + 1) * sizeof(Client64Path[0])); RegSetValueExA(Registrykey, "Universe", NULL, REG_SZ, (const BYTE *)STEAM_UNIVERSE, (DWORD)sizeof(STEAM_UNIVERSE)); RegCloseKey(Registrykey); return true; } void cleanup_registry_hkcu() { if (!orig_steam_hkcu) return; dbg_log::write("restoring registry entries (HKCU)"); HKEY Registrykey = { 0 }; if (RegOpenKeyExW(HKEY_CURRENT_USER, L"Software\\Valve\\Steam\\ActiveProcess", 0, KEY_ALL_ACCESS, &Registrykey) == ERROR_SUCCESS) { // Restore the values. RegSetValueExW(Registrykey, L"SteamClientDll", NULL, REG_SZ, (LPBYTE)OrgSteamCDir_hkcu, Size1_hkcu); RegSetValueExW(Registrykey, L"SteamClientDll64", NULL, REG_SZ, (LPBYTE)OrgSteamCDir64_hkcu, Size2_hkcu); // Close the HKEY Handle. RegCloseKey(Registrykey); } else { dbg_log::write("Unable to restore the original registry entry (HKCU), error = " + std::to_string(GetLastError())); } } bool orig_steam_hklm = false; WCHAR OrgInstallPath_hklm[8192] = { 0 }; DWORD Size1_hklm = _countof(OrgInstallPath_hklm); bool patch_registry_hklm() { HKEY Registrykey = { 0 }; if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, hklm_path.c_str(), 0, KEY_ALL_ACCESS, &Registrykey) == ERROR_SUCCESS) { orig_steam_hklm = true; // Get original values to restore later. DWORD keyType = REG_SZ; RegQueryValueExW(Registrykey, L"InstallPath", 0, &keyType, (LPBYTE)&OrgInstallPath_hklm, &Size1_hklm); dbg_log::write("Found previous registry entry (HKLM) for Steam"); } else if (RegCreateKeyExW(HKEY_LOCAL_MACHINE, hklm_path.c_str(), 0, 0, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &Registrykey, NULL) == ERROR_SUCCESS) { dbg_log::write("Created new registry entry (HKLM) for Steam"); } else { dbg_log::write("Unable to patch Registry (HKLM), error = " + std::to_string(GetLastError())); return false; } const auto my_path = pe_helpers::get_current_exe_path_w(); RegSetValueExW(Registrykey, L"InstallPath", NULL, REG_SZ, (const BYTE *)my_path.c_str(), (my_path.size() + 1) * sizeof(my_path[0])); RegSetValueExA(Registrykey, "SteamPID", NULL, REG_DWORD, (const BYTE *)&ProcessID, sizeof(DWORD)); RegSetValueExA(Registrykey, "Universe", NULL, REG_SZ, (const BYTE *)STEAM_UNIVERSE, (DWORD)sizeof(STEAM_UNIVERSE)); RegCloseKey(Registrykey); return true; } void cleanup_registry_hklm() { if (!orig_steam_hklm) return; dbg_log::write("restoring registry entries (HKLM)"); HKEY Registrykey = { 0 }; if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, hklm_path.c_str(), 0, KEY_ALL_ACCESS, &Registrykey) == ERROR_SUCCESS) { RegSetValueExW(Registrykey, L"InstallPath", NULL, REG_SZ, (const BYTE *)OrgInstallPath_hklm, Size1_hklm); RegCloseKey(Registrykey); } else { dbg_log::write("Unable to restore the original registry entry (HKLM), error = " + std::to_string(GetLastError())); } } bool orig_steam_hkcs_1 = false; bool orig_steam_hkcs_2 = false; WCHAR OrgCommand_hkcs[8192] = { 0 }; DWORD Size1_hkcs = _countof(OrgCommand_hkcs); bool patch_registry_hkcs() { HKEY Registrykey = { 0 }; if (RegOpenKeyExW(HKEY_CLASSES_ROOT, L"steam", 0, KEY_ALL_ACCESS, &Registrykey) == ERROR_SUCCESS) { orig_steam_hkcs_1 = true; dbg_log::write("Found previous registry entry (HKCS) #1 for Steam"); } else if (RegCreateKeyExW(HKEY_CLASSES_ROOT, L"steam", 0, 0, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &Registrykey, NULL) == ERROR_SUCCESS) { dbg_log::write("Created new registry entry (HKCS) #1 for Steam"); } else { dbg_log::write("Unable to patch Registry (HKCS) #1, error = " + std::to_string(GetLastError())); return false; } HKEY Registrykey_2 = { 0 }; if (RegOpenKeyExW(HKEY_CLASSES_ROOT, L"steam\\Shell\\Open\\Command", 0, KEY_ALL_ACCESS, &Registrykey_2) == ERROR_SUCCESS) { orig_steam_hkcs_2 = true; // Get original values to restore later. DWORD keyType = REG_SZ; RegQueryValueExW(Registrykey_2, L"", 0, &keyType, (LPBYTE)&OrgCommand_hkcs, &Size1_hkcs); dbg_log::write("Found previous registry entry (HKCS) #2 for Steam"); } else if (RegCreateKeyExW(HKEY_CLASSES_ROOT, L"steam\\Shell\\Open\\Command", 0, 0, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &Registrykey_2, NULL) == ERROR_SUCCESS) { dbg_log::write("Created new registry entry (HKCS) #2 for Steam"); } else { dbg_log::write("Unable to patch Registry (HKCS) #2, error = " + std::to_string(GetLastError())); RegCloseKey(Registrykey); return false; } RegSetValueExA(Registrykey, "", NULL, REG_SZ, (const BYTE *)STEAM_URL_PROTOCOL, (DWORD)sizeof(STEAM_URL_PROTOCOL)); RegSetValueExA(Registrykey, "URL Protocol", NULL, REG_SZ, (const BYTE *)"", (DWORD)sizeof("")); RegCloseKey(Registrykey); const auto cmd = pe_helpers::get_current_exe_path_w() + L"steam.exe -- \"%1\""; RegSetValueExW(Registrykey_2, L"", NULL, REG_SZ, (const BYTE *)cmd.c_str(), (cmd.size() + 1) * sizeof(cmd[0])); RegCloseKey(Registrykey_2); return true; } void cleanup_registry_hkcs() { if (orig_steam_hkcs_2) { dbg_log::write("restoring registry entries (HKCS) #1"); HKEY Registrykey = { 0 }; if (RegOpenKeyExW(HKEY_CLASSES_ROOT, L"steam\\Shell\\Open\\Command", 0, KEY_ALL_ACCESS, &Registrykey) == ERROR_SUCCESS) { RegSetValueExW(Registrykey, L"", NULL, REG_SZ, (const BYTE *)OrgCommand_hkcs, Size1_hkcs); RegCloseKey(Registrykey); } else { dbg_log::write("Unable to restore the original registry entry (HKCS) #2, error = " + std::to_string(GetLastError())); } } if (!orig_steam_hkcs_1) { dbg_log::write("removing registry entries (HKCS) #2 (added by loader)"); HKEY Registrykey = { 0 }; RegDeleteKeyA(HKEY_CLASSES_ROOT, "steam"); } } void set_steam_env_vars(const std::wstring &AppId) { SetEnvironmentVariableW(L"SteamAppId", AppId.c_str()); SetEnvironmentVariableW(L"SteamGameId", AppId.c_str()); // this env var conflicts with Steam Input // SetEnvironmentVariableW(L"SteamOverlayGameId", AppId.c_str()); // these 2 wil be overridden by the emu SetEnvironmentVariableW(L"SteamAppUser", L"cold_player"); SetEnvironmentVariableW(L"SteamUser", L"cold_player"); SetEnvironmentVariableW(L"SteamClientLaunch", L"1"); SetEnvironmentVariableW(L"SteamEnv", L"1"); SetEnvironmentVariableW(L"SteamPath", pe_helpers::get_current_exe_path_w().c_str()); } int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPWSTR lpCmdLine, _In_ int nCmdShow) { dbg_log::init(dbg_file.c_str()); IniFile = pe_helpers::get_current_exe_path_w() + std::filesystem::path(pe_helpers::get_current_exe_name_w()).stem().wstring() + L".ini"; dbg_log::write(L"Searching for configuration file: " + IniFile); if (!common_helpers::file_exist(IniFile)) { IniFile = pe_helpers::get_current_exe_path_w() + L"ColdClientLoader.ini"; dbg_log::write(L"Searching for configuration file: " + IniFile); } if (!common_helpers::file_exist(IniFile)) { dbg_log::write(L"Couldn't find the configuration file"); MessageBoxA(NULL, "Couldn't find the configuration file.", "ColdClientLoader", MB_ICONERROR); dbg_log::close(); return 1; } ClientPath = common_helpers::to_absolute( get_ini_value(L"SteamClient", L"SteamClientDll"), pe_helpers::get_current_exe_path_w() ); Client64Path = common_helpers::to_absolute( get_ini_value(L"SteamClient", L"SteamClient64Dll"), pe_helpers::get_current_exe_path_w() ); std::wstring ExeFile = common_helpers::to_absolute( get_ini_value(L"SteamClient", L"Exe"), pe_helpers::get_current_exe_path_w() ); std::wstring ExeRunDir = common_helpers::to_absolute( get_ini_value(L"SteamClient", L"ExeRunDir"), pe_helpers::get_current_exe_path_w() ); std::wstring ExeCommandLine = get_ini_value(L"SteamClient", L"ExeCommandLine"); std::wstring AppId = get_ini_value(L"SteamClient", L"AppId"); // dlls to inject std::wstring ForceInjectSteamClient = get_ini_value(L"Injection", L"ForceInjectSteamClient"); std::wstring ForceInjectGameOverlayRenderer = get_ini_value(L"Injection", L"ForceInjectGameOverlayRenderer"); std::wstring DllsToInjectFolder = common_helpers::to_absolute( get_ini_value(L"Injection", L"DllsToInjectFolder"), pe_helpers::get_current_exe_path_w() ); std::wstring IgnoreInjectionError = get_ini_value(L"Injection", L"IgnoreInjectionError", L"1"); std::wstring IgnoreLoaderArchDifference = get_ini_value(L"Injection", L"IgnoreLoaderArchDifference", L"0"); std::wstring PersistentMode = get_ini_value(L"Persistence", L"Mode", L"0"); // debug std::wstring ResumeByDebugger = get_ini_value(L"Debug", L"ResumeByDebugger"); to_bool_ini_val(ForceInjectSteamClient); to_bool_ini_val(ForceInjectGameOverlayRenderer); to_bool_ini_val(IgnoreInjectionError); to_bool_ini_val(IgnoreLoaderArchDifference); to_bool_ini_val(ResumeByDebugger); if (PersistentMode != L"0" && PersistentMode != L"1" && PersistentMode != L"2") PersistentMode = L"0"; // log everything dbg_log::write(L"SteamClient::Exe: " + ExeFile); dbg_log::write(L"SteamClient::ExeRunDir: " + ExeRunDir); dbg_log::write(L"SteamClient::ExeCommandLine: " + ExeCommandLine); dbg_log::write(L"SteamClient::AppId: " + AppId); dbg_log::write(L"SteamClient::SteamClient: " + ClientPath); dbg_log::write(L"SteamClient::SteamClient64Dll: " + Client64Path); dbg_log::write(L"SteamClient::PersistentMode: " + PersistentMode); dbg_log::write(L"SteamClient::ForceInjectSteamClient: " + ForceInjectSteamClient); dbg_log::write(L"SteamClient::ForceInjectGameOverlayRenderer: " + ForceInjectGameOverlayRenderer); dbg_log::write(L"Injection::DllsToInjectFolder: " + DllsToInjectFolder); dbg_log::write(L"Injection::IgnoreInjectionError: " + IgnoreInjectionError); dbg_log::write(L"Injection::IgnoreLoaderArchDifference: " + IgnoreLoaderArchDifference); dbg_log::write(L"Debug::ResumeByDebugger: " + ResumeByDebugger); if (!common_helpers::file_exist(Client64Path)) { dbg_log::write("Couldn't find the requested SteamClient64Dll"); MessageBoxA(NULL, "Couldn't find the requested SteamClient64Dll.", "ColdClientLoader", MB_ICONERROR); dbg_log::close(); return 1; } if (!common_helpers::file_exist(ClientPath)) { dbg_log::write("Couldn't find the requested SteamClientDll"); MessageBoxA(NULL, "Couldn't find the requested SteamClientDll.", "ColdClientLoader", MB_ICONERROR); dbg_log::close(); return 1; } if (!common_helpers::file_exist(ExeFile)) { dbg_log::write("Couldn't find the requested Exe file"); MessageBoxA(NULL, "Couldn't find the requested Exe file.", "ColdClientLoader", MB_ICONERROR); dbg_log::close(); return 1; } if (ExeRunDir.empty()) { ExeRunDir = std::filesystem::path(ExeFile).parent_path().wstring(); dbg_log::write(L"Setting ExeRunDir to: " + ExeRunDir); } if (!common_helpers::dir_exist(ExeRunDir)) { dbg_log::write("Couldn't find the requested Exe run dir"); MessageBoxA(NULL, "Couldn't find the requested Exe run dir.", "ColdClientLoader", MB_ICONERROR); dbg_log::close(); return 1; } bool isDllsToInjectFolderFound = false; if (DllsToInjectFolder.size()) { isDllsToInjectFolderFound = common_helpers::dir_exist(DllsToInjectFolder); if (!isDllsToInjectFolderFound) { dbg_log::write("Couldn't find the requested folder of dlls to inject"); MessageBoxA(NULL, "Couldn't find the requested folder of dlls to inject.", "ColdClientLoader", MB_ICONERROR); // it was requested to make this a non intrusive error, don't shutdown the whole thing because the folder is missing // dbg_log::close(); // return 1; } } auto exe_header = get_pe_header(ExeFile); if (exe_header.empty()) { dbg_log::write("Couldn't read the exe header"); MessageBoxA(NULL, "Couldn't read the exe header.", "ColdClientLoader", MB_ICONERROR); dbg_log::close(); return 1; } bool is_exe_32 = pe_helpers::is_module_32((HMODULE)&exe_header[0]); bool is_exe_64 = pe_helpers::is_module_64((HMODULE)&exe_header[0]); if ((!is_exe_32 && !is_exe_64) || (is_exe_32 && is_exe_64)) { // ARM, or just a regular file dbg_log::write("The requested exe is invalid (neither 32 nor 64 bit)"); MessageBoxA(NULL, "The requested exe is invalid (neither 32 nor 64 bit)", "ColdClientLoader", MB_ICONERROR); dbg_log::close(); return 1; } if (is_exe_32) { dbg_log::write("Detected exe arch: x32"); } else { dbg_log::write("Detected exe arch: x64"); } if (loader_is_32) { dbg_log::write("Detected loader arch: x32"); } else { dbg_log::write("Detected loader arch: x64"); } if (loader_is_32 != is_exe_32) { dbg_log::write("Arch of loader and requested exe are different, it is advised to use the appropriate one"); if (IgnoreLoaderArchDifference.empty()) { MessageBoxA(NULL, "Arch of loader and requested exe are different,\nit is advised to use the appropriate one.", "ColdClientLoader", MB_OK); } } if (isDllsToInjectFolderFound) { std::wstring failed_dlls{}; dlls_to_inject = collect_dlls_to_inject(DllsToInjectFolder, is_exe_32, failed_dlls); if (failed_dlls.size() && IgnoreInjectionError.empty()) { int choice = MessageBoxW( NULL, (L"The following dlls cannot be injected:\n" + failed_dlls + L"\nContinue ?").c_str(), L"ColdClientLoader", MB_YESNO); if (choice != IDYES) { dbg_log::close(); return 1; } } } if (ForceInjectGameOverlayRenderer.size()) { if (is_exe_32) { std::wstring GameOverlayPath = common_helpers::to_absolute( L"GameOverlayRenderer.dll", std::filesystem::path(ClientPath).parent_path().wstring() ); if (!common_helpers::file_exist(GameOverlayPath)) { dbg_log::write("Couldn't find GameOverlayRenderer.dll"); MessageBoxA(NULL, "Couldn't find GameOverlayRenderer.dll.", "ColdClientLoader", MB_ICONERROR); } else { dlls_to_inject.insert(dlls_to_inject.begin(), GameOverlayPath); } } else { // 64 std::wstring GameOverlay64Path = common_helpers::to_absolute( L"GameOverlayRenderer64.dll", std::filesystem::path(Client64Path).parent_path().wstring() ); if (!common_helpers::file_exist(GameOverlay64Path)) { dbg_log::write("Couldn't find GameOverlayRenderer64.dll"); MessageBoxA(NULL, "Couldn't find GameOverlayRenderer64.dll.", "ColdClientLoader", MB_ICONERROR); } else { dlls_to_inject.insert(dlls_to_inject.begin(), GameOverlay64Path); } } } if (ForceInjectSteamClient.size()) { if (is_exe_32) { dlls_to_inject.insert(dlls_to_inject.begin(), ClientPath); } else { dlls_to_inject.insert(dlls_to_inject.begin(), Client64Path); } } if (PersistentMode != L"2" ) { if (AppId.size() && AppId[0]) { set_steam_env_vars(AppId); } else { dbg_log::write("You forgot to set the AppId"); MessageBoxA(NULL, "You forgot to set the AppId.", "ColdClientLoader", MB_ICONERROR); return 1; } } else { // steam://run/ constexpr const static wchar_t STEAM_LAUNCH_CMD_1[] = L"steam://run/"; constexpr const static wchar_t STEAM_LAUNCH_CMD_2[] = L"-- \"steam://rungameid/"; AppId.clear(); // we don't care about the app id in the ini std::wstring my_cmd = lpCmdLine && lpCmdLine[0] ? std::wstring(lpCmdLine) : std::wstring(); dbg_log::write(L"persistent mode 2 detecting steam launch cmd from: '" + my_cmd + L"'"); if (my_cmd.find(STEAM_LAUNCH_CMD_1) == 0) { AppId = my_cmd.substr(sizeof(STEAM_LAUNCH_CMD_1) / sizeof(wchar_t), my_cmd.find_first_of(L" \t")); dbg_log::write("persistent mode 2 got steam launch cmd #1"); } else if (my_cmd.find(STEAM_LAUNCH_CMD_2) == 0) { AppId = my_cmd.substr(sizeof(STEAM_LAUNCH_CMD_2) / sizeof(wchar_t), my_cmd.find_first_of(L" \t")); dbg_log::write("persistent mode 2 got steam launch cmd #2"); } else { dbg_log::write("persistent mode 2 didn't detect a valid steam launch cmd"); } if (AppId.size()) { set_steam_env_vars(AppId); dbg_log::write(L"persistent mode 2 will use app id = " + AppId); } else { dbg_log::write("persistent mode 2 didn't find app id"); } } if (!patch_registry_hkcu()) { dbg_log::close(); MessageBoxA(NULL, "Unable to patch Registry (HKCU).", "ColdClientLoader", MB_ICONERROR); return 1; } if (!patch_registry_hklm()) { cleanup_registry_hkcu(); dbg_log::close(); MessageBoxA(NULL, "Unable to patch Registry (HKLM).", "ColdClientLoader", MB_ICONERROR); return 1; } patch_registry_hkcs(); // if (!patch_registry_hkcs()) { // this fails due to admin rights, not a big deal // cleanup_registry_hkcu(); // cleanup_registry_hklm(); // dbg_log::close(); // MessageBoxA(NULL, "Unable to patch Registry (HKCS).", "ColdClientLoader", MB_ICONERROR); // return 1; // } if (PersistentMode != L"2" || AppId.size()) { // persistent mode 0 or 1, or mode 2 with defined app id STARTUPINFOW info = { 0 }; SecureZeroMemory(&info, sizeof(info)); info.cb = sizeof(info); PROCESS_INFORMATION processInfo = { 0 }; SecureZeroMemory(&processInfo, sizeof(processInfo)); dbg_log::write("spawning the requested EXE file"); WCHAR CommandLine[16384] = { 0 }; _snwprintf(CommandLine, _countof(CommandLine), L"\"%ls\" %ls %ls", ExeFile.c_str(), ExeCommandLine.c_str(), lpCmdLine); if (!CreateProcessW(ExeFile.c_str(), CommandLine, NULL, NULL, TRUE, CREATE_SUSPENDED, NULL, ExeRunDir.c_str(), &info, &processInfo)) { dbg_log::write("Unable to load the requested EXE file"); cleanup_registry_hkcu(); cleanup_registry_hklm(); cleanup_registry_hkcs(); dbg_log::close(); MessageBoxA(NULL, "Unable to load the requested EXE file.", "ColdClientLoader", MB_ICONERROR); return 1; } dbg_log::write("injecting " + std::to_string(dlls_to_inject.size()) + " dlls"); for (const auto &dll : dlls_to_inject) { dbg_log::write(L"Injecting dll: '" + dll + L"' ..."); const char *err_inject = nullptr; DWORD code = pe_helpers::loadlib_remote(processInfo.hProcess, dll, &err_inject); if (code != ERROR_SUCCESS) { auto err_full = L"Failed to inject the dll: " + dll + L"\n" + common_helpers::str_to_w(err_inject) + L"\n" + common_helpers::str_to_w(pe_helpers::get_err_string(code)) + L"\n" + L"Error code = " + std::to_wstring(code) + L"\n"; dbg_log::write(err_full); if (IgnoreInjectionError.empty()) { TerminateProcess(processInfo.hProcess, 1); CloseHandle(processInfo.hProcess); CloseHandle(processInfo.hThread); cleanup_registry_hkcu(); cleanup_registry_hklm(); cleanup_registry_hkcs(); dbg_log::close(); MessageBoxW(NULL, err_full.c_str(), L"ColdClientLoader", MB_ICONERROR); return 1; } } else { dbg_log::write("Injected!"); } } // run if (ResumeByDebugger.empty()) { dbg_log::write("resuming the main thread of the exe"); // MessageBoxA(nullptr, "Wait then press ok", "Wait some seconds", MB_OK); // games like house flipper 2 won't launch until the previous exe has exited, which takes some seconds if (PersistentMode == L"2") std::this_thread::sleep_for(std::chrono::seconds(5)); ResumeThread(processInfo.hThread); } else { std::string msg = "Attach a debugger now to PID " + std::to_string(processInfo.dwProcessId) + " and resume its main thread"; dbg_log::write(msg); MessageBoxA(NULL, msg.c_str(), "ColdClientLoader", MB_OK); } // wait WaitForSingleObject(processInfo.hThread, INFINITE); CloseHandle(processInfo.hProcess); CloseHandle(processInfo.hThread); } if (PersistentMode == L"1" ) { MessageBoxA(NULL, "Press OK when you have finished playing to close the loader", "Cold Client Loader (waiting)", MB_OK); } else if (PersistentMode == L"2" && AppId.empty()) { MessageBoxA(NULL, "Start the game, then press OK when you have finished playing to close the loader", "Cold Client Loader (waiting)", MB_OK); } if (PersistentMode != L"2" || AppId.empty()) { // persistent mode 0 or 1, or mode 2 without app id cleanup_registry_hkcu(); cleanup_registry_hklm(); cleanup_registry_hkcs(); } dbg_log::close(); return 0; }