//From Managed.Windows.Forms/XplatUI
static bool IsRunningOnMac()
{
IntPtr buf = IntPtr.Zero;
try
{
buf = Marshal.AllocHGlobal(8192);
// This is a hacktastic way of getting sysname from uname ()
if (NativeUnixMehods.uname(buf) == 0)
{
string os = Marshal.PtrToStringAnsi(buf);
if (os == "Darwin")
{
return(true);
}
}
}
catch
{
}
finally
{
if (buf != IntPtr.Zero)
{
Marshal.FreeHGlobal(buf);
}
}
return(false);
}
public static void GetLibraryMethod <T>(SupportedPlatform platform, IntPtr handle, string name, out T t)
{
IntPtr result;
switch (platform)
{
case SupportedPlatform.Windows:
result = NativeWindowsMethods.GetProcAddress(handle, name);
if (result == IntPtr.Zero)
{
throw new EntryPointNotFoundException(name, GetLastWindowsError());
}
break;
case SupportedPlatform.Linux:
case SupportedPlatform.MacOSX:
result = NativeUnixMehods.dlsym(handle, name);
if (result == IntPtr.Zero)
{
throw new EntryPointNotFoundException(name, GetLastErrorUnix());
}
break;
default: throw new NotSupportedException();
}
t = (T)(object)Marshal.GetDelegateForFunctionPointer(result, typeof(T));
}
private static bool LoadDynamicLibrary(SupportedPlatform platform, string name, out IntPtr handle, out string location)
{
switch (platform)
{
case SupportedPlatform.Windows:
handle = NativeWindowsMethods.LoadLibrary(name);
if (handle == IntPtr.Zero)
{
goto default;
}
location = GetLocationWindows(handle) ?? name;
return(true);
case SupportedPlatform.Linux:
case SupportedPlatform.MacOSX:
handle = NativeUnixMehods.dlopen(name, 2 /* RTLD_NOW */);
if (handle == IntPtr.Zero)
{
goto default;
}
location = GetLocationUnix(handle) ?? name;
return(true);
default:
handle = IntPtr.Zero;
location = null;
return(false);
}
}
public static void UnloadDynamicLibrary(SupportedPlatform platform, IntPtr handle)
{
if (platform != SupportedPlatform.Android)
{
throw new NotSupportedException();
}
if (NativeUnixMehods.dlclose(handle) != 0)
{
throw GetLastError() ?? new InvalidOperationException();
}
}
private static string GetLocationUnix(IntPtr handle)
{
IntPtr symbol = NativeUnixMehods.dlsym(handle, "ts3client_freeMemory");
NativeUnixMehods.Dl_info dl_info = new NativeUnixMehods.Dl_info();
if (symbol == IntPtr.Zero || NativeUnixMehods.dladdr(symbol, ref dl_info) == 0)
{
return(null);
}
return(dl_info.dli_fname);
}
public static void GetLibraryMethod <T>(SupportedPlatform platform, IntPtr handle, string name, out T t)
{
if (platform != SupportedPlatform.Android)
{
throw new NotSupportedException();
}
IntPtr result = NativeUnixMehods.dlsym(handle, name);
if (result == IntPtr.Zero)
{
throw new EntryPointNotFoundException(name, GetLastError());
}
t = (T)(object)Marshal.GetDelegateForFunctionPointer(result, typeof(T));
}
public static void LoadDynamicLibrary(SupportedPlatform platform, string[] possibleNames, out IntPtr handle, out string location)
{
if (platform != SupportedPlatform.Android)
{
throw new NotSupportedException();
}
foreach (string possibleName in possibleNames)
{
handle = NativeUnixMehods.dlopen(possibleName, 2 /* RTLD_NOW */);
if (handle != IntPtr.Zero)
{
location = possibleName;
return;
}
}
string message = string.Join(", ", possibleNames);
throw new DllNotFoundException(message, GetLastError());
}
public static void UnloadDynamicLibrary(SupportedPlatform platform, IntPtr handle)
{
switch (platform)
{
case SupportedPlatform.Windows:
if (NativeWindowsMethods.FreeLibrary(handle) == false)
{
throw GetLastWindowsError();
}
break;
case SupportedPlatform.Linux:
case SupportedPlatform.MacOSX:
if (NativeUnixMehods.dlclose(handle) != 0)
{
throw GetLastErrorUnix() ?? new InvalidOperationException();
}
break;
default: throw new NotSupportedException();
}
}
private static Exception GetLastError()
{
IntPtr pointer = NativeUnixMehods.dlerror();
return(pointer != IntPtr.Zero ? new InvalidOperationException(Marshal.PtrToStringAnsi(pointer)) : null);
}
private static Exception GetLastErrorUnix()
{
string message = NativeUnixMehods.dlerror();
return(message != null ? new InvalidOperationException(message) : null);
}
