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1
2 import com.jcraft.jsch.*;
3 import java.awt.*;
4 import javax.swing.*;
5
6 public class Compression{
7 public static void main(String  [] arg){
8
9 try{
10 JSch jsch=new JSch();
11
12 String host=JOptionPane.showInputDialog("Enter username@hostname",
13 System.getProperty("user.name")+
14 "@localhost");
15 String user=host.substring(0, host.indexOf('@'));
16 host=host.substring(host.indexOf('@')+1);
17
18 Session session=jsch.getSession(user, host, 22);
19
20 UserInfo ui=new MyUserInfo();
22 session.setUserInfo(ui);
23
24 java.util.Hashtable config=new java.util.Hashtable ();
25 config.put("compression.s2c", "zlib@openssh.com,zlib,none");
26 config.put("compression.c2s", "zlib@openssh.com,zlib,none");
27 config.put("compression_level", "9");
28 session.setConfig(config);
29
30 session.connect();
31
32 Channel channel=session.openChannel("shell");
33
34 channel.setInputStream(System.in);
35 channel.setOutputStream(System.out);
36
37 channel.connect();
38 }
39 catch(Exception e){
40 System.out.println(e);
41 }
42 }
43
44 public static class MyUserInfo implements UserInfo, UIKeyboardInteractive{
45 public String getPassword(){ return passwd; }
46 public boolean promptYesNo(String str){
47 Object [] options={ "yes", "no" };
48 int foo=JOptionPane.showOptionDialog(null,
49 str,
50 "Warning",
51 JOptionPane.DEFAULT_OPTION,
52 JOptionPane.WARNING_MESSAGE,
53 null, options, options[0]);
54 return foo==0;
55 }
56
57 String passwd;
58 JTextField passwordField=(JTextField)new JPasswordField(20);
59
60 public String getPassphrase(){ return null; }
61 public boolean promptPassphrase(String message){ return true; }
62 public boolean promptPassword(String message){
63 Object [] ob={passwordField};
64 int result=
65 JOptionPane.showConfirmDialog(null, ob, message,
66 JOptionPane.OK_CANCEL_OPTION);
67 if(result==JOptionPane.OK_OPTION){
68 passwd=passwordField.getText();
69 return true;
70 }
71 else{ return false; }
72 }
73 public void showMessage(String message){
74 JOptionPane.showMessageDialog(null, message);
75 }
76 final GridBagConstraints gbc =
77 new GridBagConstraints(0,0,1,1,1,1,
78 GridBagConstraints.NORTHWEST,
79 GridBagConstraints.NONE,
80 new Insets(0,0,0,0),0,0);
81 private Container panel;
82 public String [] promptKeyboardInteractive(String destination,
83 String name,
84 String instruction,
85 String [] prompt,
86 boolean[] echo){
87 panel = new JPanel();
88 panel.setLayout(new GridBagLayout());
89
90 gbc.weightx = 1.0;
91 gbc.gridwidth = GridBagConstraints.REMAINDER;
92 gbc.gridx = 0;
93 panel.add(new JLabel(instruction), gbc);
94 gbc.gridy++;
95
96 gbc.gridwidth = GridBagConstraints.RELATIVE;
97
98 JTextField[] texts=new JTextField[prompt.length];
99 for(int i=0; i<prompt.length; i++){
100 gbc.fill = GridBagConstraints.NONE;
101 gbc.gridx = 0;
102 gbc.weightx = 1;
103 panel.add(new JLabel(prompt[i]),gbc);
104
105 gbc.gridx = 1;
106 gbc.fill = GridBagConstraints.HORIZONTAL;
107 gbc.weighty = 1;
108 if(echo[i]){
109 texts[i]=new JTextField(20);
110 }
111 else{
112 texts[i]=new JPasswordField(20);
113 }
114 panel.add(texts[i], gbc);
115 gbc.gridy++;
116 }
117
118 if(JOptionPane.showConfirmDialog(null, panel,
119 destination+": "+name,
120 JOptionPane.OK_CANCEL_OPTION,
121 JOptionPane.QUESTION_MESSAGE)
122 ==JOptionPane.OK_OPTION){
123 String [] response=new String [prompt.length];
124 for(int i=0; i<prompt.length; i++){
125 response[i]=texts[i].getText();
126 }
127 return response;
128 }
129 else{
130 return null; }
132 }
133 }
134 }
135
136
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