72 lines
2.0 KiB
C#
72 lines
2.0 KiB
C#
using System;
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using System.Threading.Tasks;
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using System.Linq;
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using System.Reflection;
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using System.IO;
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using System.Net.Mime;
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using System.Net;
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using System.Security.Principal;
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namespace GalleryShare
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{
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public class Utilities
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{
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private Utilities()
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{
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}
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/// <summary>
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/// Call this method to allow a given task to complete in the background.
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/// Errors will be handled correctly.
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/// Useful in fire-and-forget scenarios, like a TCP server for example.
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/// From http://stackoverflow.com/a/22864616/1460422
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/// </summary>
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/// <param name="task">The task to forget about.</param>
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/// <param name="acceptableExceptions">Acceptable exceptions. Exceptions specified here won't cause a crash.</param>
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public static async void ForgetTask(Task task, params Type[] acceptableExceptions)
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{
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try
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{
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await task.ConfigureAwait(false);
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}
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catch (Exception ex)
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{
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// FUTURE: consider whether derived types are also acceptable.
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if (!acceptableExceptions.Contains(ex.GetType()))
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throw;
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}
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}
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public static async Task<byte[]> GetEmbeddedResourceContent(string resourceName)
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{
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Assembly asm = Assembly.GetExecutingAssembly();
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Stream stream = asm.GetManifestResourceStream(resourceName);
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MemoryStream ms = new MemoryStream();
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await stream.CopyToAsync(ms);
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byte[] embeddedContent = ms.ToArray();
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ms.Dispose();
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stream.Dispose();
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return embeddedContent;
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}
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public static async Task SendMessage(HttpListenerContext cycle, int statusCode, string message, params object[] paramObjects)
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{
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StreamWriter responseData = new StreamWriter(cycle.Response.OutputStream);
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cycle.Response.StatusCode = statusCode;
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await responseData.WriteLineAsync(string.Format(message, paramObjects));
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/*responseData.Close();
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cycle.Response.Close();*/
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}
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public static bool IsAdministrator()
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{
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var identity = WindowsIdentity.GetCurrent();
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var principal = new WindowsPrincipal(identity);
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return principal.IsInRole(WindowsBuiltInRole.Administrator);
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}
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}
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}
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