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- /* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
- /**
- * This program will demonstrate how to exec 'sudo' on the remote.
- *
- */
- import com.jcraft.jsch.*;
- import java.awt.*;
- import javax.swing.*;
- import java.io.*;
- public class Sudo{
- public static void main(String[] arg){
- try{
- JSch jsch=new JSch();
- String host=null;
- if(arg.length>0){
- host=arg[0];
- }
- else{
- host=JOptionPane.showInputDialog("Enter username@hostname",
- System.getProperty("user.name")+
- "@localhost");
- }
- String user=host.substring(0, host.indexOf('@'));
- host=host.substring(host.indexOf('@')+1);
- Session session=jsch.getSession(user, host, 22);
- UserInfo ui=new MyUserInfo();
- session.setUserInfo(ui);
- session.connect();
- String command=JOptionPane.showInputDialog("Enter command, execed with sudo",
- "printenv SUDO_USER");
- String sudo_pass=null;
- {
- JTextField passwordField=(JTextField)new JPasswordField(8);
- Object[] ob={passwordField};
- int result=
- JOptionPane.showConfirmDialog(null,
- ob,
- "Enter password for sudo",
- JOptionPane.OK_CANCEL_OPTION);
- if(result!=JOptionPane.OK_OPTION){
- System.exit(-1);
- }
- sudo_pass=passwordField.getText();
- }
- Channel channel=session.openChannel("exec");
- // man sudo
- // -S The -S (stdin) option causes sudo to read the password from the
- // standard input instead of the terminal device.
- // -p The -p (prompt) option allows you to override the default
- // password prompt and use a custom one.
- ((ChannelExec)channel).setCommand("sudo -S -p '' "+command);
- InputStream in=channel.getInputStream();
- OutputStream out=channel.getOutputStream();
- ((ChannelExec)channel).setErrStream(System.err);
- channel.connect();
- out.write((sudo_pass+"\n").getBytes());
- out.flush();
- byte[] tmp=new byte[1024];
- while(true){
- while(in.available()>0){
- int i=in.read(tmp, 0, 1024);
- if(i<0)break;
- System.out.print(new String(tmp, 0, i));
- }
- if(channel.isClosed()){
- System.out.println("exit-status: "+channel.getExitStatus());
- break;
- }
- try{Thread.sleep(1000);}catch(Exception ee){}
- }
- channel.disconnect();
- session.disconnect();
- }
- catch(Exception e){
- System.out.println(e);
- }
- }
- public static class MyUserInfo implements UserInfo, UIKeyboardInteractive{
- public String getPassword(){ return passwd; }
- public boolean promptYesNo(String str){
- Object[] options={ "yes", "no" };
- int foo=JOptionPane.showOptionDialog(null,
- str,
- "Warning",
- JOptionPane.DEFAULT_OPTION,
- JOptionPane.WARNING_MESSAGE,
- null, options, options[0]);
- return foo==0;
- }
- String passwd;
- JTextField passwordField=(JTextField)new JPasswordField(20);
- public String getPassphrase(){ return null; }
- public boolean promptPassphrase(String message){ return true; }
- public boolean promptPassword(String message){
- Object[] ob={passwordField};
- int result=
- JOptionPane.showConfirmDialog(null, ob, message,
- JOptionPane.OK_CANCEL_OPTION);
- if(result==JOptionPane.OK_OPTION){
- passwd=passwordField.getText();
- return true;
- }
- else{
- return false;
- }
- }
- public void showMessage(String message){
- JOptionPane.showMessageDialog(null, message);
- }
- final GridBagConstraints gbc =
- new GridBagConstraints(0,0,1,1,1,1,
- GridBagConstraints.NORTHWEST,
- GridBagConstraints.NONE,
- new Insets(0,0,0,0),0,0);
- private Container panel;
- public String[] promptKeyboardInteractive(String destination,
- String name,
- String instruction,
- String[] prompt,
- boolean[] echo){
- panel = new JPanel();
- panel.setLayout(new GridBagLayout());
- gbc.weightx = 1.0;
- gbc.gridwidth = GridBagConstraints.REMAINDER;
- gbc.gridx = 0;
- panel.add(new JLabel(instruction), gbc);
- gbc.gridy++;
- gbc.gridwidth = GridBagConstraints.RELATIVE;
- JTextField[] texts=new JTextField[prompt.length];
- for(int i=0; i<prompt.length; i++){
- gbc.fill = GridBagConstraints.NONE;
- gbc.gridx = 0;
- gbc.weightx = 1;
- panel.add(new JLabel(prompt[i]),gbc);
- gbc.gridx = 1;
- gbc.fill = GridBagConstraints.HORIZONTAL;
- gbc.weighty = 1;
- if(echo[i]){
- texts[i]=new JTextField(20);
- }
- else{
- texts[i]=new JPasswordField(20);
- }
- panel.add(texts[i], gbc);
- gbc.gridy++;
- }
- if(JOptionPane.showConfirmDialog(null, panel,
- destination+": "+name,
- JOptionPane.OK_CANCEL_OPTION,
- JOptionPane.QUESTION_MESSAGE)
- ==JOptionPane.OK_OPTION){
- String[] response=new String[prompt.length];
- for(int i=0; i<prompt.length; i++){
- response[i]=texts[i].getText();
- }
- return response;
- }
- else{
- return null; // cancel
- }
- }
- }
- }
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