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gbe_fork/tools/steamclient_loader/win/ColdClientLoader.cpp
otavepto 484fc2a982 * set these env vars for a more accurate emulation: 
- `SteamAppUser`
  - `SteamUser`
  - `SteamClientLaunch`
  - `SteamEnv`
  - `SteamPath`
2024-04-13 17:35:10 +02:00

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// 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 <stdlib.h>
#include <malloc.h>
#include <memory.h>
#include <tchar.h>
#include <stdio.h>
#include <string>
#include <set>
#include <thread>
static const std::wstring IniFile = pe_helpers::get_current_exe_path_w() + L"ColdClientLoader.ini";
static const std::wstring dbg_file = pe_helpers::get_current_exe_path_w() + L"COLD_LDR_LOG.txt";
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<std::wstring> dlls_to_inject{};
std::wstring get_ini_value(LPCWSTR section, LPCWSTR key, LPCWSTR default_val = NULL)
{
std::vector<wchar_t> buff(INT16_MAX);
DWORD read_chars = GetPrivateProfileStringW(section, key, default_val, &buff[0], (DWORD)buff.size(), IniFile.c_str());
if (!read_chars) {
std::wstring();
}
// "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<uint8_t> get_pe_header(const std::wstring &filepath)
{
try {
std::ifstream file(filepath, std::ios::binary);
if (!file.is_open()) throw;
file.seekg(0, std::ios::beg);
// 2MB is enough
std::vector<uint8_t> 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<uint8_t>();
}
}
static std::vector<std::wstring> 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<std::wstring> 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::to_upper(dll_path) == common_helpers::to_upper(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);
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" will be injected");
} 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";
}
}
std::vector<std::wstring> ordered_dlls_to_inject{};
{
dbg_log::write(L"Searching for load order file: " + load_order_file.wstring());
auto f_order = std::wifstream(load_order_file, std::ios::in);
if (f_order.is_open()) {
dbg_log::write(L"Reading load order file: " + load_order_file.wstring());
std::wstring line{};
while (std::getline(f_order, line)) {
auto abs = common_helpers::to_absolute(line, extra_dlls_folder);
auto abs_upper = common_helpers::to_upper(abs);
dbg_log::write(L"Load order line: " + abs_upper);
auto it = std::find_if(dlls_to_inject.begin(), dlls_to_inject.end(), [&abs_upper](const std::wstring &dll_to_inject) {
return common_helpers::to_upper(dll_to_inject) == abs_upper;
});
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);
// mark for deletion
it->clear();
}
}
f_order.close();
}
}
// add the remaining dlls
for (auto &dll : dlls_to_inject) {
if (dll.size()) {
ordered_dlls_to_inject.push_back(dll);
}
}
return ordered_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());
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());
if (!common_helpers::file_exist(IniFile)) {
dbg_log::write(L"Couldn't find the configuration file: " + dbg_file);
MessageBoxA(NULL, "Couldn't find the configuration file ColdClientLoader.ini.", "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;
}
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