RemoteTerminal.java

package org.jftclient.terminal;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintStream;

import javax.annotation.PreDestroy;

import org.jftclient.ssh.Connection;
import org.springframework.stereotype.Component;

import com.jcraft.jsch.ChannelShell;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;

/**
 * @author sergei.malafeev
 */
@Component
public class RemoteTerminal {
    private Session session;
    private Thread thread;
    private String key;

    public void connect(Connection connection, TerminalPanel remoteTerminalPanel) throws JSchException, IOException {
        String newKey = connection.getUser() + connection.getRemoteHost();
        if (newKey.equals(key)) {
            return;
        }
        key = newKey;

        disconnect();

        JSch jsch = new JSch();
        session = jsch.getSession(connection.getUser(), connection.getRemoteHost(), 22);
        session.setPassword(connection.getPassword());
        session.setConfig("StrictHostKeyChecking", "no");
        session.connect(5000);

        ChannelShell channel = (ChannelShell) session.openChannel("shell");
        channel.setPtyType("vt102");

        OutputStream inputToChannel = channel.getOutputStream();
        PrintStream printStream = new PrintStream(inputToChannel, true);
        remoteTerminalPanel.setPrintStream(printStream);

        InputStream outFromChannel = channel.getInputStream();

        Runnable run = new TerminalWatcher(outFromChannel, remoteTerminalPanel.getTextArea());
        thread = new Thread(run);
        thread.start();

        channel.connect();
    }

    @PreDestroy
    public void disconnect() {
        if (session != null) {
            session.disconnect();
        }
        if (thread != null) {
            thread.interrupt();
        }
    }
}