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Add 32bit registry view editing to ColdClientLoader.

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This commit is contained in:
redpolline 2024-06-23 22:27:38 -04:00
parent 629473b53e
commit e88f92cf4a
1 changed files with 37 additions and 0 deletions

37
steamclient_loader/ColdClientLoader.cpp
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@ -141,6 +141,7 @@ int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance
return 0;
}
HKEY Registrykey;
HKEY Registrykey_32BitView;
// Declare some variables to be used for Steam registry.
DWORD UserId = 0x03100004771F810D & 0xffffffff;
DWORD ProcessID = GetCurrentProcessId();
@ -149,8 +150,12 @@ int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance
DWORD keyType = REG_SZ;
WCHAR OrgSteamCDir[MAX_PATH] = { 0 };
WCHAR OrgSteamCDir64[MAX_PATH] = { 0 };
WCHAR OrgSteamCDir_32BitView[MAX_PATH] = { 0 };
WCHAR OrgSteamCDir64_32BitView[MAX_PATH] = { 0 };
DWORD Size1 = MAX_PATH;
DWORD Size2 = MAX_PATH;
DWORD Size3 = MAX_PATH;
DWORD Size4 = MAX_PATH;
if (RegOpenKeyExW(HKEY_CURRENT_USER, L"Software\\Valve\\Steam\\ActiveProcess", 0, KEY_ALL_ACCESS, &Registrykey) == ERROR_SUCCESS)
{
orig_steam = true;
@ -169,30 +174,53 @@ int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance
return 0;
}
}
if (RegOpenKeyExW(HKEY_CURRENT_USER, L"Software\\Valve\\Steam\\ActiveProcess", 0, KEY_ALL_ACCESS | KEY_WOW64_32KEY, &Registrykey_32BitView) == ERROR_SUCCESS)
{
orig_steam = true;
// Get original values to restore later.
RegQueryValueExW(Registrykey_32BitView, L"SteamClientDll", 0, &keyType, (LPBYTE)& OrgSteamCDir_32BitView, &Size3);
RegQueryValueExW(Registrykey_32BitView, L"SteamClientDll64", 0, &keyType, (LPBYTE)& OrgSteamCDir64_32BitView, &Size4);
} else {
if (RegCreateKeyExW(HKEY_CURRENT_USER, L"Software\\Valve\\Steam\\ActiveProcess", 0, 0, REG_OPTION_NON_VOLATILE,
KEY_ALL_ACCESS | KEY_WOW64_32KEY, NULL, &Registrykey_32BitView, NULL) != ERROR_SUCCESS)
{
MessageBoxA(NULL, "Unable to patch Steam process informations on the Windows registry.", "ColdClientLoader", MB_ICONERROR);
TerminateProcess(processInfo.hProcess, NULL);
return 0;
}
}
// 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));
RegSetValueExA(Registrykey_32BitView, "ActiveUser", NULL, REG_DWORD, (LPBYTE)& UserId, sizeof(DWORD));
RegSetValueExA(Registrykey_32BitView, "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 (GetFileAttributesW(ClientPath) != INVALID_FILE_ATTRIBUTES) {
RegSetValueExW(Registrykey, L"SteamClientDll", NULL, REG_SZ, (LPBYTE)ClientPath, (DWORD)(lstrlenW(ClientPath) * sizeof(WCHAR)) + 1);
RegSetValueExW(Registrykey_32BitView, L"SteamClientDll", NULL, REG_SZ, (LPBYTE)ClientPath, (DWORD)(lstrlenW(ClientPath) * sizeof(WCHAR)) + 1);
}
else {
RegSetValueExW(Registrykey, L"SteamClientDll", NULL, REG_SZ, (LPBYTE)"", 0);
RegSetValueExW(Registrykey_32BitView, L"SteamClientDll", NULL, REG_SZ, (LPBYTE)"", 0);
}
if (GetFileAttributesW(Client64Path) != INVALID_FILE_ATTRIBUTES) {
RegSetValueExW(Registrykey, L"SteamClientDll64", NULL, REG_SZ, (LPBYTE)Client64Path, (DWORD)(lstrlenW(Client64Path) * sizeof(WCHAR)) + 1);
RegSetValueExW(Registrykey_32BitView, L"SteamClientDll64", NULL, REG_SZ, (LPBYTE)Client64Path, (DWORD)(lstrlenW(Client64Path) * sizeof(WCHAR)) + 1);
}
else {
RegSetValueExW(Registrykey, L"SteamClientDll64", NULL, REG_SZ, (LPBYTE)"", 0);
RegSetValueExW(Registrykey_32BitView, L"SteamClientDll64", NULL, REG_SZ, (LPBYTE)"", 0);
}
}
RegSetValueExA(Registrykey, "Universe", NULL, REG_SZ, (LPBYTE)"Public", (DWORD)lstrlenA("Public") + 1);
RegSetValueExA(Registrykey_32BitView, "Universe", NULL, REG_SZ, (LPBYTE)"Public", (DWORD)lstrlenA("Public") + 1);
// Close the HKEY Handle.
RegCloseKey(Registrykey);
RegCloseKey(Registrykey_32BitView);
ResumeThread(processInfo.hThread);
WaitForSingleObject(processInfo.hThread, INFINITE);
@ -209,6 +237,15 @@ int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance
// Close the HKEY Handle.
RegCloseKey(Registrykey);
}
if (RegOpenKeyExW(HKEY_CURRENT_USER, L"Software\\Valve\\Steam\\ActiveProcess", 0, KEY_ALL_ACCESS | KEY_WOW64_32KEY, &Registrykey_32BitView) == ERROR_SUCCESS)
{
// Restore the values.
RegSetValueExW(Registrykey_32BitView, L"SteamClientDll", NULL, REG_SZ, (LPBYTE)OrgSteamCDir_32BitView, Size3);
RegSetValueExW(Registrykey_32BitView, L"SteamClientDll64", NULL, REG_SZ, (LPBYTE)OrgSteamCDir64_32BitView, Size4);
// Close the HKEY Handle.
RegCloseKey(Registrykey_32BitView);
}
}
// Close the SharedMem handles.