goldberg_emulator/steamclient_loader/ColdClientLoader.cpp

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// My own modified version of ColdClientLoader originally written by Rat431
#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers
// Windows Header Files
#include <windows.h>
// C RunTime Header Files
#include <stdlib.h>
#include <malloc.h>
#include <memory.h>
#include <tchar.h>
#include <stdio.h>
bool IsNotRelativePathOrRemoveFileName(CHAR* output, bool Remove)
{
int LG = lstrlenA(output);
for (int i = LG; i > 0; i--) {
if (output[i] == '\\') {
if(Remove)
RtlFillMemory(&output[i], LG - i, NULL);
return true;
}
}
return false;
}
int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPWSTR lpCmdLine, _In_ int nCmdShow)
{
CHAR CurrentDirectory[MAX_PATH] = { 0 };
CHAR Client64Path[MAX_PATH] = { 0 };
CHAR ClientPath[MAX_PATH] = { 0 };
CHAR ExeFile[MAX_PATH] = { 0 };
CHAR ExeRunDir[MAX_PATH] = { 0 };
CHAR ExeCommandLine[4096] = { 0 };
CHAR AppId[128] = { 0 };
STARTUPINFOA info = { sizeof(info) };
PROCESS_INFORMATION processInfo;
int Length = GetModuleFileNameA(GetModuleHandleA(NULL), CurrentDirectory, sizeof(CurrentDirectory)) + 1;
for (int i = Length; i > 0; i--) {
if (CurrentDirectory[i] == '\\') {
lstrcpyA(&CurrentDirectory[i + 1], "ColdClientLoader.ini");
break;
}
}
if (GetFileAttributesA(CurrentDirectory) == INVALID_FILE_ATTRIBUTES) {
MessageBoxA(NULL, "Couldn't find the configuration file(ColdClientLoader.ini).", "ColdClientLoader", MB_ICONERROR);
ExitProcess(NULL);
}
GetPrivateProfileStringA("SteamClient", "SteamClient64Dll", "", Client64Path, MAX_PATH, CurrentDirectory);
GetPrivateProfileStringA("SteamClient", "SteamClientDll", "", ClientPath, MAX_PATH, CurrentDirectory);
GetPrivateProfileStringA("SteamClient", "Exe", NULL, ExeFile, MAX_PATH, CurrentDirectory);
GetPrivateProfileStringA("SteamClient", "ExeRunDir", NULL, ExeRunDir, MAX_PATH, CurrentDirectory);
GetPrivateProfileStringA("SteamClient", "ExeCommandLine", NULL, ExeCommandLine, 4096, CurrentDirectory);
GetPrivateProfileStringA("SteamClient", "AppId", NULL, AppId, sizeof(AppId), CurrentDirectory);
if (AppId[0]) {
SetEnvironmentVariableA("SteamAppId", AppId);
SetEnvironmentVariableA("SteamGameId", AppId);
}
CHAR TMP[MAX_PATH] = { 0 };
if (!IsNotRelativePathOrRemoveFileName(Client64Path, false)) {
ZeroMemory(TMP, sizeof(TMP));
lstrcpyA(TMP, Client64Path);
ZeroMemory(Client64Path, sizeof(Client64Path));
GetFullPathNameA(TMP, MAX_PATH, Client64Path, NULL);
}
if (!IsNotRelativePathOrRemoveFileName(ClientPath, false)) {
ZeroMemory(TMP, sizeof(TMP));
lstrcpyA(TMP, ClientPath);
ZeroMemory(ClientPath, sizeof(ClientPath));
GetFullPathNameA(TMP, MAX_PATH, ClientPath, NULL);
}
if (!IsNotRelativePathOrRemoveFileName(ExeFile, false)) {
ZeroMemory(TMP, sizeof(TMP));
lstrcpyA(TMP, ExeFile);
ZeroMemory(ExeFile, sizeof(ExeFile));
GetFullPathNameA(TMP, MAX_PATH, ExeFile, NULL);
}
if (!IsNotRelativePathOrRemoveFileName(ExeRunDir, false)) {
ZeroMemory(TMP, sizeof(TMP));
lstrcpyA(TMP, ExeRunDir);
ZeroMemory(ExeRunDir, sizeof(ExeRunDir));
GetFullPathNameA(TMP, MAX_PATH, ExeRunDir, NULL);
}
if (GetFileAttributesA(Client64Path) == INVALID_FILE_ATTRIBUTES) {
MessageBoxA(NULL, "Couldn't find the requested SteamClient64Dll.", "ColdClientLoader", MB_ICONERROR);
ExitProcess(NULL);
}
if (GetFileAttributesA(ClientPath) == INVALID_FILE_ATTRIBUTES) {
MessageBoxA(NULL, "Couldn't find the requested SteamClientDll.", "ColdClientLoader", MB_ICONERROR);
ExitProcess(NULL);
}
if (GetFileAttributesA(ExeFile) == INVALID_FILE_ATTRIBUTES) {
MessageBoxA(NULL, "Couldn't find the requested Exe file.", "ColdClientLoader", MB_ICONERROR);
ExitProcess(NULL);
}
CHAR CommandLine[8192];
snprintf(CommandLine, sizeof(CommandLine), "\"%s\" %s", ExeFile, ExeCommandLine);
if (!ExeFile[0] || !CreateProcessA(ExeFile, CommandLine, NULL, NULL, TRUE, CREATE_SUSPENDED, NULL, ExeRunDir, &info, &processInfo))
{
MessageBoxA(NULL, "Unable to load the requested EXE file.", "ColdClientLoader", MB_ICONERROR);
ExitProcess(NULL);
}
HKEY Registrykey;
// Declare some variables to be used for Steam registry.
DWORD UserId = 0x03100004771F810D & 0xffffffff;
DWORD ProcessID = GetCurrentProcessId();
if (RegOpenKeyExA(HKEY_CURRENT_USER, "Software\\Valve\\Steam\\ActiveProcess", 0, KEY_ALL_ACCESS, &Registrykey) != ERROR_SUCCESS)
{
if (RegCreateKeyExA(HKEY_CURRENT_USER, "Software\\Valve\\Steam\\ActiveProcess", 0, 0, REG_OPTION_NON_VOLATILE,
KEY_ALL_ACCESS, NULL, &Registrykey, NULL) != ERROR_SUCCESS)
{
MessageBoxA(NULL, "Unable to patch Steam process informations on the Windows registry.", "ColdClientLoader", MB_ICONERROR);
TerminateProcess(processInfo.hProcess, NULL);
ExitProcess(NULL);
}
else
{
// Set values to Windows registry.
RegSetValueExA(Registrykey, "ActiveUser", NULL, REG_DWORD, (LPBYTE)& UserId, sizeof(DWORD));
RegSetValueExA(Registrykey, "pid", NULL, REG_DWORD, (LPBYTE)& ProcessID, sizeof(DWORD));
{
// Before saving to the registry check again if the path was valid and if the file exist
if (GetFileAttributesA(ClientPath) != INVALID_FILE_ATTRIBUTES) {
RegSetValueExA(Registrykey, "SteamClientDll", NULL, REG_SZ, (LPBYTE)ClientPath, (DWORD)lstrlenA(ClientPath) + 1);
}
else {
RegSetValueExA(Registrykey, "SteamClientDll", NULL, REG_SZ, (LPBYTE)"", 0);
}
if (GetFileAttributesA(Client64Path) != INVALID_FILE_ATTRIBUTES) {
RegSetValueExA(Registrykey, "SteamClientDll64", NULL, REG_SZ, (LPBYTE)Client64Path, (DWORD)lstrlenA(Client64Path) + 1);
}
else {
RegSetValueExA(Registrykey, "SteamClientDll64", NULL, REG_SZ, (LPBYTE)"", 0);
}
}
RegSetValueExA(Registrykey, "Universe", NULL, REG_SZ, (LPBYTE)"Public", (DWORD)lstrlenA("Public") + 1);
// Close the HKEY Handle.
RegCloseKey(Registrykey);
ResumeThread(processInfo.hThread);
WaitForSingleObject(processInfo.hThread, INFINITE);
CloseHandle(processInfo.hProcess);
CloseHandle(processInfo.hThread);
ExitProcess(NULL);
}
}
else
{
DWORD keyType = REG_SZ;
CHAR OrgSteamCDir[MAX_PATH] = { 0 };
CHAR OrgSteamCDir64[MAX_PATH] = { 0 };
DWORD Size1 = MAX_PATH;
DWORD Size2 = MAX_PATH;
// Get original values to restore later.
RegQueryValueExA(Registrykey, "SteamClientDll", 0, &keyType, (LPBYTE)& OrgSteamCDir, &Size1);
RegQueryValueExA(Registrykey, "SteamClientDll64", 0, &keyType, (LPBYTE)& OrgSteamCDir64, &Size2);
// Set values to Windows registry.
RegSetValueExA(Registrykey, "ActiveUser", NULL, REG_DWORD, (LPBYTE)& UserId, sizeof(DWORD));
RegSetValueExA(Registrykey, "pid", NULL, REG_DWORD, (LPBYTE)& ProcessID, sizeof(DWORD));
{
// Before saving to the registry check again if the path was valid and if the file exist
if (GetFileAttributesA(ClientPath) != INVALID_FILE_ATTRIBUTES) {
RegSetValueExA(Registrykey, "SteamClientDll", NULL, REG_SZ, (LPBYTE)ClientPath, (DWORD)lstrlenA(ClientPath) + 1);
}
else {
RegSetValueExA(Registrykey, "SteamClientDll", NULL, REG_SZ, (LPBYTE)"", 0);
}
if (GetFileAttributesA(Client64Path) != INVALID_FILE_ATTRIBUTES) {
RegSetValueExA(Registrykey, "SteamClientDll64", NULL, REG_SZ, (LPBYTE)Client64Path, (DWORD)lstrlenA(Client64Path) + 1);
}
else {
RegSetValueExA(Registrykey, "SteamClientDll64", NULL, REG_SZ, (LPBYTE)"", 0);
}
}
RegSetValueExA(Registrykey, "Universe", NULL, REG_SZ, (LPBYTE)"Public", (DWORD)lstrlenA("Public") + 1);
// Close the HKEY Handle.
RegCloseKey(Registrykey);
ResumeThread(processInfo.hThread);
WaitForSingleObject(processInfo.hThread, INFINITE);
CloseHandle(processInfo.hProcess);
CloseHandle(processInfo.hThread);
if (RegOpenKeyExA(HKEY_CURRENT_USER, "Software\\Valve\\Steam\\ActiveProcess", 0, KEY_ALL_ACCESS, &Registrykey) == ERROR_SUCCESS)
{
// Restore the values.
RegSetValueExA(Registrykey, "SteamClientDll", NULL, REG_SZ, (LPBYTE)OrgSteamCDir, (DWORD)lstrlenA(OrgSteamCDir) + 1);
RegSetValueExA(Registrykey, "SteamClientDll64", NULL, REG_SZ, (LPBYTE)OrgSteamCDir64, (DWORD)lstrlenA(OrgSteamCDir64) + 1);
// Close the HKEY Handle.
RegCloseKey(Registrykey);
}
ExitProcess(NULL);
}
return 1;
}