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/*
* Copyright (C) 2007 Kenny Root (kenny at the-b.org)
*
* This file is part of Connectbot.
*
* Connectbot is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Connectbot is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Connectbot. If not, see <http://www.gnu.org/licenses/>.
*/
package org.theb.ssh;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.concurrent.Semaphore;
import com.trilead.ssh2.Connection;
import com.trilead.ssh2.ConnectionMonitor;
import com.trilead.ssh2.Session;
public class TrileadConnectionThread extends ConnectionThread {
private String hostname;
private String username;
private String password;
private int port;
private Connection connection;
private Session session;
private InputStream stdOut;
private OutputStream stdIn;
private Semaphore sPass;
protected FeedbackUI ui;
protected Terminal term;
public TrileadConnectionThread(FeedbackUI ui, Terminal term, String hostname, String username, int port) {
super(ui, hostname, username, port);
this.ui = ui;
this.term = term;
this.hostname = hostname;
this.username = username;
this.port = port;
}
@Override
public void finish() {
if (session != null) {
session.close();
session = null;
}
if (connection != null) {
connection.close();
connection = null;
}
}
@Override
public InputStream getReader() {
return stdOut;
}
@Override
public OutputStream getWriter() {
return stdIn;
}
@Override
public void run() {
connection = new Connection(hostname, port);
connection.addConnectionMonitor((ConnectionMonitor) ui);
ui.setWaiting(true, "Connection", "Connecting to " + hostname + "...");
try {
connection.connect(new InteractiveHostKeyVerifier());
ui.setWaiting(true, "Authenticating", "Trying to authenticate...");
// boolean enableKeyboardInteractive = true;
// boolean enableDSA = true;
// boolean enableRSA = true;
while (true) {
/*
* if ((enableDSA || enableRSA ) &&
* mConn.isAuthMethodAvailable(username, "publickey");
*/
if (connection.isAuthMethodAvailable(username, "password")) {
ui.setWaiting(true, "Authenticating",
"Trying to authenticate using password...");
// Set a semaphore that is unset by the returning dialog.
sPass = new Semaphore(0);
ui.askPassword();
// Wait for the user to answer.
sPass.acquire();
sPass = null;
if (password == null)
continue;
boolean res = connection.authenticateWithPassword(username,
password);
password = null;
if (res == true)
break;
continue;
}
throw new IOException(
"No supported authentication methods available.");
}
ui.setWaiting(true, "Session", "Requesting shell...");
session = connection.openSession();
session.requestPTY("vt100",
term.getColumnCount(), term.getRowCount(),
term.getWidth(), term.getHeight(),
null);
session.startShell();
stdIn = session.getStdin();
// stderr = session.getStderr();
stdOut = session.getStdout();
ui.setWaiting(false, null, null);
} catch (IOException e) {
ui.setWaiting(false, null, null);
return;
} catch (InterruptedException e) {
// This thread is coming to an end. Let us exit.
return;
}
term.start(stdOut, stdIn);
}
@Override
public void setPassword(String password) {
if (password == null)
this.password = "";
else
this.password = password;
sPass.release();
}
}
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