package org.eclipse.jetty.nested;
   
   import java.io.BufferedInputStream;
   import java.io.BufferedReader;
   import java.io.ByteArrayOutputStream;
   import java.io.File;
   import java.io.IOException;
   import java.io.InputStreamReader;
   import java.io.PrintStream;
  import java.net.InetSocketAddress;
  import java.net.ServerSocket;
  import java.net.Socket;
  import java.net.SocketAddress;
  import java.util.concurrent.CountDownLatch;
  
  import javax.servlet.ServletException;
  import javax.servlet.ServletOutputStream;
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.eclipse.jetty.util.IO;
  import org.eclipse.jetty.util.TypeUtil;
  
  public class TestServlet extends HttpServlet
  {
  
      /* (non-Javadoc)
       * @see javax.servlet.http.HttpServlet#doGet(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
       */
      @Override
      protected void doGet(final HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
      {
          resp.setContentType("text/plain");
          final PrintStream out = new PrintStream(resp.getOutputStream());
          
          out.println("Try out evil things.");
  
          try
          {
              out.println("\nList home dir...");
              for (File f : new File("/home").listFiles())
                  out.println(f);
          }
          catch(Throwable e)
          {
              e.printStackTrace(out);
          }
          try
          {
              out.println("\nList tmp dir...");
              for (File f : new File("/var/tmp").listFiles())
                  out.println(f);
          }
          catch(Throwable e)
          {
              e.printStackTrace(out);
          }
          
          try
          {
              out.println("\nCreate a /var/tmp file...");
              File file = new File("/var/tmp/eviltest");
  
              out.println(file+" exists="+file.exists());
              file.createNewFile();
              file.deleteOnExit();
              out.println(file+" exists="+file.exists());
              file.delete();
          }
          catch(Throwable e)
          {
              e.printStackTrace(out);
          }
          
  
          try
          {
              out.println("\nOpen a localhost server socket ...");
              
              ServerSocket socket = new ServerSocket();
              socket.bind(new InetSocketAddress("localhost",0));
              out.println("local port = "+socket.getLocalPort());
          }
          catch(Throwable e)
          {
              e.printStackTrace(out);
          }
          
          try
          {
              out.println("\nOpen a any server socket ...");
              
              ServerSocket socket = new ServerSocket();
              socket.bind(new InetSocketAddress(0));
              out.println("local port = "+socket.getLocalPort());
          }
          catch(Throwable e)
          {
             e.printStackTrace(out);
         }
         try
         {
             out.println("\nTalk to any server socket ...");
             
             final ServerSocket server = new ServerSocket();
             server.bind(new InetSocketAddress(0));
             out.println("local port = "+server.getLocalPort());
             final int port = server.getLocalPort();
             
             final CountDownLatch latch = new CountDownLatch(1);
             
             new Thread()
             {
                 public void run()
                 {
                     try
                     {
                         Socket inbound = server.accept();
                         out.println("accepted "+inbound);
                         BufferedReader in = new BufferedReader(new InputStreamReader(inbound.getInputStream()));
                         String data= in.readLine();
                         out.println("read "+data);
                     }
                     catch(Throwable e)
                     {
                         e.printStackTrace(out);
                     }
                     finally
                     {
                         latch.countDown();
                     }
                 }
             }.start();
             
            
             Socket socket = new Socket("localhost",port); 
             socket.getOutputStream().write("Hello World\n".getBytes());
             
             latch.await();
             socket.close();
         }
         catch(Throwable e)
         {
             e.printStackTrace(out);
         }
         
         try
         {
             out.println("\nRead to own content ...");
             out.println("Real path / = "+getServletContext().getRealPath("/"));
            
             for (File f : new File(getServletContext().getRealPath("/")).listFiles())
                 out.println(f);
             
         }
         catch(Throwable e)
         {
             e.printStackTrace(out);
         }
         
         
         try
         {
             out.println("\nWrite own content ...");
             
             File wibble = new File(getServletContext().getRealPath("/wibble.txt"));
             if (!wibble.exists())
                 wibble.createNewFile();
             
             for (File f : new File(getServletContext().getRealPath("/")).listFiles())
                 out.println(f);
             
         }
         catch(Throwable e)
         {
             e.printStackTrace(out);
         }
      
         out.flush();
         out.close();
     }
     
 
 }