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using System;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Reflection;
#if SMAPI_FOR_WINDOWS
using System.Management;
#endif
using System.Runtime.InteropServices;
using StardewModdingAPI.Toolkit.Utilities;
namespace StardewModdingAPI.Toolkit.Framework
{
/// <summary>Provides low-level methods for fetching environment information.</summary>
/// <remarks>This is used by the SMAPI core before the toolkit DLL is available; most code should use <see cref="EnvironmentUtility"/> instead.</remarks>
internal static class LowLevelEnvironmentUtility
{
/*********
** Fields
*********/
/// <summary>Get the OS name from the system uname command.</summary>
/// <param name="buffer">The buffer to fill with the resulting string.</param>
[DllImport("libc")]
[SuppressMessage("ReSharper", "IdentifierTypo", Justification = "This is the actual external command name.")]
private static extern int uname(IntPtr buffer);
/*********
** Public methods
*********/
/// <summary>Detect the current OS.</summary>
public static string DetectPlatform()
{
switch (Environment.OSVersion.Platform)
{
case PlatformID.MacOSX:
return nameof(Platform.Mac);
case PlatformID.Unix when LowLevelEnvironmentUtility.IsRunningAndroid():
return nameof(Platform.Android);
case PlatformID.Unix when LowLevelEnvironmentUtility.IsRunningMac():
return nameof(Platform.Mac);
case PlatformID.Unix:
return nameof(Platform.Linux);
default:
return nameof(Platform.Windows);
}
}
/// <summary>Get the human-readable OS name and version.</summary>
/// <param name="platform">The current platform.</param>
public static string GetFriendlyPlatformName(string platform)
{
#if SMAPI_FOR_WINDOWS
try
{
string? result = new ManagementObjectSearcher("SELECT Caption FROM Win32_OperatingSystem")
.Get()
.Cast<ManagementObject>()
.Select(entry => entry.GetPropertyValue("Caption").ToString())
.FirstOrDefault();
return result ?? "Windows";
}
catch
{
// fallback to default behavior
}
#endif
string name = Environment.OSVersion.ToString();
switch (platform)
{
case nameof(Platform.Android):
name = $"Android {name}";
break;
case nameof(Platform.Mac):
name = $"macOS {name}";
break;
}
return name;
}
/// <summary>Get whether an executable is 64-bit.</summary>
/// <param name="path">The absolute path to the assembly file.</param>
public static bool Is64BitAssembly(string path)
{
return AssemblyName.GetAssemblyName(path).ProcessorArchitecture != ProcessorArchitecture.X86;
}
/*********
** Private methods
*********/
/// <summary>Detect whether the code is running on Android.</summary>
/// <remarks>
/// This code is derived from https://stackoverflow.com/a/47521647/262123. It detects Android by calling the
/// <c>getprop</c> system command to check for an Android-specific property.
/// </remarks>
private static bool IsRunningAndroid()
{
using Process process = new()
{
StartInfo =
{
FileName = "getprop",
Arguments = "ro.build.user",
RedirectStandardOutput = true,
UseShellExecute = false,
CreateNoWindow = true
}
};
try
{
process.Start();
string output = process.StandardOutput.ReadToEnd();
return !string.IsNullOrWhiteSpace(output);
}
catch
{
return false;
}
}
/// <summary>Detect whether the code is running on macOS.</summary>
/// <remarks>
/// This code is derived from the Mono project (see System.Windows.Forms/System.Windows.Forms/XplatUI.cs). It detects macOS by calling the
/// <c>uname</c> system command and checking the response, which is always 'Darwin' for macOS.
/// </remarks>
private static bool IsRunningMac()
{
IntPtr buffer = IntPtr.Zero;
try
{
buffer = Marshal.AllocHGlobal(8192);
if (LowLevelEnvironmentUtility.uname(buffer) == 0)
{
string? os = Marshal.PtrToStringAnsi(buffer);
return os == "Darwin";
}
return false;
}
catch
{
return false; // default to Linux
}
finally
{
if (buffer != IntPtr.Zero)
Marshal.FreeHGlobal(buffer);
}
}
}
}
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