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1
2 import com.jcraft.jsch.*;
3 import java.awt.*;
4 import javax.swing.*;
5
6 public class X11Forwarding{
7 public static void main(String  [] arg){
8
9 String xhost="127.0.0.1";
10 int xport=0;
11
12 try{
13 JSch jsch=new JSch();
14
15 String host=JOptionPane.showInputDialog("Enter username@hostname",
16 System.getProperty("user.name")+
17 "@localhost");
18 String user=host.substring(0, host.indexOf('@'));
19 host=host.substring(host.indexOf('@')+1);
20
21 Session session=jsch.getSession(user, host, 22);
22
23 String display=JOptionPane.showInputDialog("Please enter display name",
24 xhost+":"+xport);
25 xhost=display.substring(0, display.indexOf(':'));
26 xport=Integer.parseInt(display.substring(display.indexOf(':')+1));
27
28 session.setX11Host(xhost);
29 session.setX11Port(xport+6000);
30
31 UserInfo ui=new MyUserInfo();
33 session.setUserInfo(ui);
34 session.connect();
35
36 Channel channel=session.openChannel("shell");
37
38 channel.setXForwarding(true);
39
40 channel.setInputStream(System.in);
41 channel.setOutputStream(System.out);
42
43 channel.connect();
44 }
45 catch(Exception e){
46 System.out.println(e);
47 }
48 }
49
50 public static class MyUserInfo implements UserInfo, UIKeyboardInteractive{
51 public String getPassword(){ return passwd; }
52 public boolean promptYesNo(String str){
53 Object [] options={ "yes", "no" };
54 int foo=JOptionPane.showOptionDialog(null,
55 str,
56 "Warning",
57 JOptionPane.DEFAULT_OPTION,
58 JOptionPane.WARNING_MESSAGE,
59 null, options, options[0]);
60 return foo==0;
61 }
62
63 String passwd;
64 JTextField passwordField=(JTextField)new JPasswordField(20);
65
66 public String getPassphrase(){ return null; }
67 public boolean promptPassphrase(String message){ return true; }
68 public boolean promptPassword(String message){
69 Object [] ob={passwordField};
70 int result=
71 JOptionPane.showConfirmDialog(null, ob, message,
72 JOptionPane.OK_CANCEL_OPTION);
73 if(result==JOptionPane.OK_OPTION){
74 passwd=passwordField.getText();
75 return true;
76 }
77 else{ return false; }
78 }
79 public void showMessage(String message){
80 JOptionPane.showMessageDialog(null, message);
81 }
82 final GridBagConstraints gbc =
83 new GridBagConstraints(0,0,1,1,1,1,
84 GridBagConstraints.NORTHWEST,
85 GridBagConstraints.NONE,
86 new Insets(0,0,0,0),0,0);
87 private Container panel;
88 public String [] promptKeyboardInteractive(String destination,
89 String name,
90 String instruction,
91 String [] prompt,
92 boolean[] echo){
93 panel = new JPanel();
94 panel.setLayout(new GridBagLayout());
95
96 gbc.weightx = 1.0;
97 gbc.gridwidth = GridBagConstraints.REMAINDER;
98 gbc.gridx = 0;
99 panel.add(new JLabel(instruction), gbc);
100 gbc.gridy++;
101
102 gbc.gridwidth = GridBagConstraints.RELATIVE;
103
104 JTextField[] texts=new JTextField[prompt.length];
105 for(int i=0; i<prompt.length; i++){
106 gbc.fill = GridBagConstraints.NONE;
107 gbc.gridx = 0;
108 gbc.weightx = 1;
109 panel.add(new JLabel(prompt[i]),gbc);
110
111 gbc.gridx = 1;
112 gbc.fill = GridBagConstraints.HORIZONTAL;
113 gbc.weighty = 1;
114 if(echo[i]){
115 texts[i]=new JTextField(20);
116 }
117 else{
118 texts[i]=new JPasswordField(20);
119 }
120 panel.add(texts[i], gbc);
121 gbc.gridy++;
122 }
123
124 if(JOptionPane.showConfirmDialog(null, panel,
125 destination+": "+name,
126 JOptionPane.OK_CANCEL_OPTION,
127 JOptionPane.QUESTION_MESSAGE)
128 ==JOptionPane.OK_OPTION){
129 String [] response=new String [prompt.length];
130 for(int i=0; i<prompt.length; i++){
131 response[i]=texts[i].getText();
132 }
133 return response;
134 }
135 else{
136 return null; }
138 }
139 }
140 }
141
142
143 |
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