import java.net.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

class TCPThread extends Thread 
{    
	public static InetAddress hostAddress;
	public static int MIN_port;
	public static int MAX_port;
	private int threadnum;    
	public TCPThread(String name,int threadnum) 
	{        
		super(name);        
		this.threadnum = threadnum;    
	}    
	public void run() 
	{
		int i;        
		Socket theTCPsocket;
		for (i = MIN_port+threadnum; i < MAX_port; i += Integer.parseInt(Scan.maxThread.getText())) 
		{
			Scan.status.setText("狀態:掃描 "+i+" 端口");
			try
			{
				theTCPsocket=new Socket(hostAddress,i);
				theTCPsocket.close();
				Scan.Result.append(" "+i);
				switch(i)
				{
					case 21:
					Scan.Result.append("(FTP)");
					break;
					case 22:
					Scan.Result.append("(SSH)");
					break;
					case 23:
					Scan.Result.append("(TELNET)");
					break;
					case 25:
					Scan.Result.append("(SMTP)");
					break; 
					case 80:
					Scan.Result.append("(HTTP)");
					break;
					case 110:
					Scan.Result.append("(POP)");
					break;
					case 139:
					Scan.Result.append("(netBIOS)");
					break;
					case 443:
					Scan.Result.append("(HTTPS)");
					break;
					case 1433:
					Scan.Result.append("(MSSQL)");
					break;
					case 3306:
					Scan.Result.append("(MYSQL)");
					break;
					case 3389:
					Scan.Result.append("(Terminal Services)");
					break;
					case 4000:
					Scan.Result.append("(Tencent QQ)");
					break;
				}
				Scan.Result.append(",");
			}
			catch (IOException e)
			{}
		}
		if (i==MAX_port)
		{
			Scan.Result.append("\n"+"Completed ...");
			Scan.status.setText("狀態:Completed!");
		}
	}
}

class Cancle implements ActionListener
{
	public void actionPerformed (ActionEvent e)
	{
		System.exit(1);
	}
}

class Submit implements ActionListener
{
	public void actionPerformed (ActionEvent a) 
	{
		int minPort;
		int maxPort;
		int maxThread;
		try
		{
			minPort=Integer.parseInt(Scan.minPort.getText());
			maxPort=Integer.parseInt(Scan.maxPort.getText());
			maxThread=Integer.parseInt(Scan.maxThread.getText());
		}
		catch(NumberFormatException e)
		{
			Scan.DLGINFO.setText("端口號或線程數錯誤!端口號和線程數必須為整數!");
			Scan.DLGError.setVisible(true);
			Scan.status.setText("狀態:No start ");
			return;
		}
		try
		{
			TCPThread.hostAddress=InetAddress.getByName(Scan.hostname.getText());
		}
		catch(UnknownHostException e)
		{
			Scan.DLGINFO.setText("            IP/域名或地址錯誤!            ");
			Scan.DLGError.setVisible(true);
			Scan.status.setText("狀態:No start ");
			return;
		}
		if(minPort<0 || minPort>65535 || minPort>maxPort)
		{
			Scan.DLGINFO.setText("端口界于0-65535 !");
			Scan.DLGError.setVisible(true);
			return;			
		}
		else TCPThread.MIN_port=minPort;
		if(maxPort<0 || maxPort>65535 || maxPort<minPort)
		{
			Scan.DLGINFO.setText("端口界于0-65535 !");
			Scan.DLGError.setVisible(true);
			Scan.status.setText("狀態:No start");
			return;	
		}
		else TCPThread.MAX_port=maxPort;
		if(maxThread<1 || maxThread>300)
		{
			Scan.DLGINFO.setText("                    線程數為1-300的整數!                    ");
			Scan.DLGError.setVisible(true);
			Scan.status.setText("狀態:No start");
			return;
		}
		Scan.Result.setText("");
		Scan.Result.append("正在掃描 "+Scan.hostname.getText()+" 線程數 "+Scan.maxThread.getText()+"\n");
		Scan.Result.append("開放端口: ");
		for(int i=0;i<maxThread;i++)
		{
			new TCPThread("T" + i,i).start();
		}
	}
}

class OK implements ActionListener
{
	public void actionPerformed (ActionEvent e)
	{
		Scan.DLGError.dispose();
	}
}

public class Scan
{
	public static JFrame main=new JFrame("JAVA的多線程TCP端口掃描程序 ");
	public static JTextArea Result=new JTextArea("",4,43);
	public static JTextField hostname=new JTextField("www.eviloctal.com",10);
	public static JTextField minPort=new JTextField("0",4);
	public static JTextField maxPort=new JTextField("1000",4);
	public static JTextField maxThread=new JTextField("100",3);
	public static JDialog DLGError=new JDialog(main,"Wrong!");
	public static Label DLGINFO=new Label("");
	public static Label status=new Label("狀態:No start");
	public static void main(String[] args)
	{
		main.setSize(500,220);
		main.setLocation(320,320);
		main.setResizable(false);
		DLGError.setSize(300,100);
		DLGError.setLocation(400,400);
		JPanel mainPanel = new JPanel();
		Label H=new Label("ip-域名:");
		Label P1=new Label("端口范圍:");
		Label P2=new Label("-");
		Label TNUM=new Label("線程數:");
		Label RST=new Label("掃描結果:                                                                                             Onlyer[EST-VIP]");
		Label con=new Label("                                                                                                              ");
		Result.setLineWrap(true);
		Result.setEditable(false);
		JButton OK = new JButton("確定");
		JButton Submit = new JButton("確定");
		JButton Cancel = new JButton("退出");
		Container mPanel = main.getContentPane();
		Container dPanel = DLGError.getContentPane();
		mPanel.setLayout(new FlowLayout(FlowLayout.LEFT));
		dPanel.setLayout(new FlowLayout(FlowLayout.CENTER));
		mPanel.add(H);
		mPanel.add(hostname);
		mPanel.add(P1);
		mPanel.add(minPort);
		mPanel.add(P2);
		mPanel.add(maxPort);
		mPanel.add(TNUM);
		mPanel.add(maxThread);
		mPanel.add(RST);
		mPanel.add(Result);
		mPanel.add(con);
		mPanel.add(Submit);
		mPanel.add(Cancel);
		mPanel.add(status);
	  dPanel.add(DLGINFO);
	  dPanel.add(OK);
    main.setVisible(true);
    Submit.addActionListener(new Submit());
    Cancel.addActionListener(new Cancle());
    OK.addActionListener(new OK());
   }
}