/// <summary>
/// Gets the Steam process ID from the registry; returns 0 if Steam isn't running or isn't installed.
/// </summary>
/// <returns>Steam's process ID if it is running; otherwise, 0.</returns>
public static int GetSteamPid()
{
if (!IsSteamInstalled)
{
return(0);
}
string pidRegKey;
string pidRegName;
if (SysNative.IsSystem64Bit())
{
pidRegKey = @"HKEY_CURRENT_USER\Software\Valve\Steam\ActiveProcess";
pidRegName = "pid";
}
else
{
pidRegKey = @"HKEY_LOCAL_MACHINE\Software\Valve\Steam";
pidRegName = "SteamPID";
}
Logger.Info($"Attempting to retrieve Steam PID from registry value named '{pidRegName}' inside the key '{pidRegKey}'.");
var pid = (int)Registry.GetValue(pidRegKey, pidRegName, -1);
if (pid == -1)
{
Logger.Warning($"The Steam PID could not be retrieved because the registry value '{pidRegName}' or registry key '{pidRegKey}' was invalid or did not exist.");
return(0);
}
Logger.Info($"The Steam PID value retrieved from the registry is '{pid}'.");
return(pid);
}
/// <summary>
/// Retrieves the Source Mod installation path from the registry or returns null if not found.
/// </summary>
/// <returns>A string containing the Source Mod installation path.</returns>
/// <exception cref="InvalidOperationException">Thrown when path could not be found.</exception>
public static string GetSourceModPath()
{
string installPath;
if (SysNative.IsSystem64Bit())
{
installPath = (string)Registry.GetValue(@"HKEY_CURRENT_USER\Software\Valve\Steam", "SourceModInstallPath", null);
}
else
{
installPath = (string)Registry.GetValue(@"HKEY_LOCAL_MACHINE\Software\Valve\Steam", "SourceModInstallPath", null);
}
if (installPath == null)
{
const string errorMsg = "No valid Steam ModInstallPath could be found.";
Logger.Error(errorMsg);
throw new InvalidOperationException(errorMsg);
}
installPath = installPath.Replace("/", @"\");
Logger.Info($"Setting Steam ModInstallPath to: '{installPath}'");
return(installPath);
}
