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

/*
 *實現掃描的主體程序
 */
public class ThreadScan{
	
	public static JFrame main=new JFrame("JAVA端口掃描器");
	
	//顯示掃描結果
	public static JTextArea Result=new JTextArea("",4,40);
	//滾動條面板
	public static JScrollPane resultPane = new JScrollPane(Result,JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
	JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
	
	
	//輸入主機名文本框
	public static JTextField hostname=new JTextField("localhost",8);
	
	//輸入ip地址前3位的輸入框
	public static JTextField fromip1=new JTextField("0",3);
	//輸入ip地址4~6位的輸入框
	public static JTextField fromip2=new JTextField("0",3);
	//輸入ip地址7~9位的輸入框
	public static JTextField fromip3=new JTextField("0",3);
	//輸入起始ip地址最后4位的輸入框
	public static JTextField fromip4=new JTextField("0",3);
	//輸入目標ip地址最后4位的輸入框
	public static JTextField toip=new JTextField("0",3);
	
	//輸入最小端口的輸入框
	public static JTextField minPort=new JTextField("0",4);
	//輸入最大端口的輸入框
	public static JTextField maxPort=new JTextField("1000",4);
	//輸入最大線程數量的輸入框
	public static JTextField maxThread=new JTextField("100",3);
	
	//錯誤提示框
	public static JDialog DLGError=new JDialog(main,"錯誤!");
	public static JLabel DLGINFO=new JLabel("");
	
	public static JLabel type=new JLabel("請選擇：");
	
	//掃描類型
	public static JRadioButton radioIp = new JRadioButton("IP地址：");
	public static JRadioButton radioHost = new JRadioButton("主機名：",true);
	//單選框組
	public static ButtonGroup group = new ButtonGroup();

	public static JLabel P1=new JLabel("端口范圍:");
	public static JLabel P2=new JLabel("~");
	public static JLabel P3=new JLabel("~");
	public static JLabel Pdot1 = new JLabel(".");
	public static JLabel Pdot2 = new JLabel(".");
	public static JLabel Pdot3 = new JLabel(".");
	public static JLabel TNUM=new JLabel("線程數:");
	public static JLabel RST=new JLabel("掃描結果:                                       ");
	public static JLabel con=new JLabel("                                                                                                              ");

	//定義按鈕
	public static JButton OK = new JButton("確定");
	public static JButton Submit = new JButton("開始掃描");
	public static JButton Cancel = new JButton("退出");
	public static JButton saveButton = new JButton("保存掃描結果");

	//菜單欄
	public static JMenuBar myBar = new JMenuBar();
	public static JMenu myMenu = new JMenu("文件(F)");
	public static JMenuItem saveItem = new JMenuItem("保存掃描結果(S)");
	public static JMenuItem exitItem = new JMenuItem("退出(Q)");
	public static JMenu myMenu2 = new JMenu("幫助");
	public static JMenuItem helpItem = new JMenuItem("閱讀");

	public static void main(String[] args){

		main.setSize(500,400);
		main.setLocation(300,300);
		main.setResizable(false);
		main.setLayout(new GridBagLayout());
		main.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		DLGError.setSize(300,100);
		DLGError.setLocation(400,400);

		//添加“菜單欄”
		myMenu.add(saveItem);
		myMenu.add(exitItem);

		myMenu2.add(helpItem);

		myBar.add(myMenu);
		myBar.add(myMenu2);
		main.setJMenuBar(myBar);

		//設置熱鍵
		myMenu.setMnemonic('F'); 
		saveItem.setMnemonic ('S'); 
		//為“另存為”組件設置快捷鍵為ctrl+s
		saveItem.setAccelerator (KeyStroke.getKeyStroke (KeyEvent.VK_S,InputEvent.CTRL_MASK)); 
		exitItem.setMnemonic('Q'); 
		exitItem.setAccelerator (KeyStroke.getKeyStroke (KeyEvent.VK_E,InputEvent.CTRL_MASK)); 

		//采用表格包型布局
		Container mPanel = main.getContentPane();
		GridBagConstraints c = new GridBagConstraints();
		c.insets = new Insets(10,0,0,10);

		c.gridx = 0;
		c.gridy = 0;
		c.gridwidth = 10;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(type,c);

		group.add(radioIp);
		group.add(radioHost);

		c.gridx = 0;
		c.gridy = 1;
		c.gridwidth = 1;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(radioIp,c);

		c.gridx = 1;
		c.gridy = 1;
		c.gridwidth = 1;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(fromip1,c);

		c.gridx = 2;
		c.gridy = 1;
		c.gridwidth = 1;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(Pdot1,c);

		c.gridx = 3;
		c.gridy = 1;
		c.gridwidth = 1;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(fromip2,c);

		c.gridx = 4;
		c.gridy = 1;
		c.gridwidth = 1;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(Pdot2,c);

		c.gridx = 5;
		c.gridy = 1;
		c.gridwidth = 1;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(fromip3,c);

		c.gridx = 6;
		c.gridy = 1;
		c.gridwidth = 1;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(Pdot3,c);

		c.gridx = 7;
		c.gridy = 1;
		c.gridwidth = 1;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(fromip4,c);

		c.gridx = 8;
		c.gridy = 1;
		c.gridwidth = 1;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(P2,c);

		c.gridx = 9;
		c.gridy = 1;
		c.gridwidth = 1;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(toip,c);

		c.gridx = 0;
		c.gridy = 2;
		c.gridwidth = 1;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(radioHost,c);

		c.gridx = 1;
		c.gridy = 2;
		c.gridwidth = 3;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(hostname,c);

		c.gridx = 0;
		c.gridy = 3;
		c.gridwidth = 1;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(P1,c);

		c.gridx = 1;
		c.gridy = 3;
		c.gridwidth = 1;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(minPort,c);

		c.gridx = 2;
		c.gridy = 3;
		c.gridwidth = 1;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(P3,c);

		c.gridx = 3;
		c.gridy = 3;
		c.gridwidth = 1;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(maxPort,c);

		c.gridx = 0;
		c.gridy = 4;
		c.gridwidth = 1;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(TNUM,c);

		c.gridx = 1;
		c.gridy = 4;
		c.gridwidth = 3;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(maxThread,c);

		c.gridx = 0;
		c.gridy = 5;
		c.gridwidth = 3;
		c.fill = GridBagConstraints.VERTICAL;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(Submit,c);
		
		c.gridx = 3;
		c.gridy = 5;
		c.gridwidth = 3;
		c.fill = GridBagConstraints.VERTICAL;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(saveButton,c);

		c.gridx = 6;
		c.gridy = 5;
		c.gridwidth = 4;
		c.fill = GridBagConstraints.VERTICAL;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(Cancel,c);

		c.gridx = 0;
		c.gridy = 6;
		c.gridwidth = 10;
		c.fill = GridBagConstraints.BOTH;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(RST,c);

		//設置文本區域可以換行
		Result.setLineWrap(true);
		//設置文本區域不可編輯
		Result.setEditable(false);

		c.gridx = 0;
		c.gridy = 7;
		c.gridwidth = 10;
		c.gridheight = 4;
		c.fill = GridBagConstraints.VERTICAL;
		c.anchor = GridBagConstraints.CENTER;
		mPanel.add(resultPane,c);

		Container dPanel = DLGError.getContentPane();
		dPanel.setLayout(new FlowLayout(FlowLayout.CENTER));
		dPanel.add(DLGINFO);
		dPanel.add(OK);

		Submit.addActionListener(new SubmitAction());