MyServlet.java Source code

Introduction

Here is the source code for MyServlet.java

Source

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class MyServlet extends HttpServlet {

    public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
        res.setContentType("text/html");
        PrintWriter out = res.getWriter();

        // Get the client's hostname
        String remoteHost = req.getRemoteHost();

        out.println("remoteHost:" + remoteHost);
        // See if the client is allowed
        if (!isHostAllowed(remoteHost)) {
            out.println("Access <BLINK>denied</BLINK>");
        } else {
            out.println("Access granted");
            // Display download links, etc...
        }
    }

    // Disallow hosts ending with .cu, .ir, .iq, .kp, .ly, .sy, and .sd.
    private boolean isHostAllowed(String host) {
        return (!host.endsWith(".cu") && !host.endsWith(".ir") && !host.endsWith(".iq") && !host.endsWith(".kp")
                && !host.endsWith(".ly") && !host.endsWith(".sy") && !host.endsWith(".sd"));
    }
}