Examples with Session com.jcraft.jsch.Session used on opensource projects

Example 31 with Session

use of com.jcraft.jsch.Session in project hadoop by apache.

the class SshFenceByTcpPort method tryFence.

@Override
public boolean tryFence(HAServiceTarget target, String argsStr) throws BadFencingConfigurationException {
    Args args = new Args(argsStr);
    InetSocketAddress serviceAddr = target.getAddress();
    String host = serviceAddr.getHostName();
    Session session;
    try {
        session = createSession(serviceAddr.getHostName(), args);
    } catch (JSchException e) {
        LOG.warn("Unable to create SSH session", e);
        return false;
    }
    LOG.info("Connecting to " + host + "...");
    try {
        session.connect(getSshConnectTimeout());
    } catch (JSchException e) {
        LOG.warn("Unable to connect to " + host + " as user " + args.user, e);
        return false;
    }
    LOG.info("Connected to " + host);
    try {
        return doFence(session, serviceAddr);
    } catch (JSchException e) {
        LOG.warn("Unable to achieve fencing on remote host", e);
        return false;
    } finally {
        session.disconnect();
    }
}

Example 32 with Session

use of com.jcraft.jsch.Session in project hadoop by apache.

the class SFTPConnectionPool method disconnect.

void disconnect(ChannelSftp channel) throws IOException {
    if (channel != null) {
        // close connection if too many active connections
        boolean closeConnection = false;
        synchronized (this) {
            if (liveConnectionCount > maxConnection) {
                --liveConnectionCount;
                con2infoMap.remove(channel);
                closeConnection = true;
            }
        }
        if (closeConnection) {
            if (channel.isConnected()) {
                try {
                    Session session = channel.getSession();
                    channel.disconnect();
                    session.disconnect();
                } catch (JSchException e) {
                    throw new IOException(StringUtils.stringifyException(e));
                }
            }
        } else {
            returnToPool(channel);
        }
    }
}

Example 33 with Session

use of com.jcraft.jsch.Session in project GNS by MobilityFirst.

the class SSHClient method scpTo.

/**
   *
   * @param user
   * @param host
   * @param keyFile
   * @param lfile
   * @param rfile
   */
public static void scpTo(String user, String host, File keyFile, String lfile, String rfile) {
    if (verbose) {
        System.out.println("Remote copy file from " + lfile + " to " + host + "@" + user + ":" + rfile);
    }
    FileInputStream fis = null;
    try {
        JSch jsch = new JSch();
        Session session = authenticateWithKey(jsch, user, host, keyFile);
        // username and password will be given via UserInfo interface.
        UserInfo ui = new UserInfoPrompted();
        session.setUserInfo(ui);
        session.connect();
        boolean ptimestamp = true;
        // exec 'scp -t rfile' remotely
        String command = "scp " + (ptimestamp ? "-p" : "") + " -t " + rfile;
        Channel channel = session.openChannel("exec");
        ((ChannelExec) channel).setCommand(command);
        // get I/O streams for remote scp
        OutputStream out = channel.getOutputStream();
        InputStream in = channel.getInputStream();
        channel.connect();
        int ack = checkAck(in);
        if (ack != 0) {
            System.out.println("ACK was " + ack);
            return;
        }
        File _lfile = new File(lfile);
        if (ptimestamp) {
            command = "T " + (_lfile.lastModified() / 1000) + " 0";
            // The access time should be sent here,
            // but it is not accessible with JavaAPI ;-<
            command += (" " + (_lfile.lastModified() / 1000) + " 0\n");
            out.write(command.getBytes());
            out.flush();
            ack = checkAck(in);
            if (ack != 0) {
                System.out.println("ACK was " + ack);
                return;
            }
        }
        // send "C0644 filesize filename", where filename should not include '/'
        long filesize = _lfile.length();
        command = "C0644 " + filesize + " ";
        if (lfile.lastIndexOf('/') > 0) {
            command += lfile.substring(lfile.lastIndexOf('/') + 1);
        } else {
            command += lfile;
        }
        command += "\n";
        out.write(command.getBytes());
        out.flush();
        ack = checkAck(in);
        if (ack != 0) {
            System.out.println("ACK was " + ack);
            return;
        }
        // send a content of lfile
        fis = new FileInputStream(lfile);
        byte[] buf = new byte[1024];
        while (true) {
            int len = fis.read(buf, 0, buf.length);
            if (len <= 0) {
                break;
            }
            //out.flush();
            out.write(buf, 0, len);
        }
        fis.close();
        fis = null;
        // send '\0'
        buf[0] = 0;
        out.write(buf, 0, 1);
        out.flush();
        ack = checkAck(in);
        if (ack != 0) {
            System.out.println("ACK was " + ack);
            return;
        }
        out.close();
        channel.disconnect();
        session.disconnect();
    } catch (JSchException | IOException e) {
        GNSConfig.getLogger().severe(e.toString());
        try {
            if (fis != null) {
                fis.close();
            }
        } catch (Exception ee) {
        }
    }
}

Example 34 with Session

use of com.jcraft.jsch.Session in project GNS by MobilityFirst.

the class SSHClient method authenticateWithPassword.

/**
   *
   * @param jsch
   * @param user
   * @param host
   * @return the session
   * @throws JSchException
   */
public static Session authenticateWithPassword(JSch jsch, String user, String host) throws JSchException {
    if (host == null || user == null) {
        String host_user = JOptionPane.showInputDialog("Enter username@hostname", (user == null ? System.getProperty("user.name") : user) + (host == null ? "@localhost" : host));
        user = host_user.substring(0, host_user.indexOf('@'));
        host = host_user.substring(host_user.indexOf('@') + 1);
    }
    Session session = jsch.getSession(user, host, 22);
    // Disable those pesky "The authenticity of host" message
    // another way to do this is to use a know-hosts file
    java.util.Properties props = new Properties();
    props.setProperty("StrictHostKeyChecking", "no");
    session.setConfig(props);
    return session;
}

Example 35 with Session

use of com.jcraft.jsch.Session in project GNS by MobilityFirst.

the class SSHClient method exec.

/**
   *
   * @param user
   * @param host
   * @param keyFile
   * @param command
   * @param useSudo
   * @param sudoPasswd
   */
public static void exec(String user, String host, File keyFile, String command, boolean useSudo, String sudoPasswd) {
    if (verbose) {
        System.out.println("Remote execute command on " + host + (useSudo ? " as root user: " : " as user " + user + ": ") + command);
    }
    try {
        JSch jsch = new JSch();
        Session session = authenticateWithKey(jsch, user, host, keyFile);
        // username and password will be given via UserInfo interface.
        UserInfo ui = new UserInfoPrompted();
        session.setUserInfo(ui);
        session.connect();
        if (command == null) {
            command = JOptionPane.showInputDialog("Enter command", "set|grep SSH");
        }
        Channel channel = session.openChannel("exec");
        if (useSudo && sudoPasswd != null) {
            ((ChannelExec) channel).setCommand("sudo -S -p '' " + command);
        } else if (useSudo) {
            ((ChannelExec) channel).setCommand("sudo -p '' " + command);
        } else {
            ((ChannelExec) channel).setCommand(command);
        }
        //      if (useSudo) {
        //        ((ChannelExec) channel).setCommand("sudo -S -p '' " + command);
        //      } else {
        //        ((ChannelExec) channel).setCommand(command);
        //      }
        // ??? NOT SURE WHY THIS IS HERE
        channel.setInputStream(null);
        InputStream in = channel.getInputStream();
        // prep the out channel so we can give a password if it is needed
        OutputStream out = null;
        if (useSudo && sudoPasswd != null) {
            out = channel.getOutputStream();
        }
        ((ChannelExec) channel).setErrStream(System.err);
        // WESTY ADDED THIS *****
        if (useSudo) {
            // fixes "you must have a tty to sudo" problem
            ((ChannelExec) channel).setPty(true);
        }
        channel.connect();
        // suppply the password for sudo
        if (out != null) {
            out.write((sudoPasswd + "\n").getBytes());
            out.flush();
        }
        byte[] tmp = new byte[MAXCOMMANDBYTES];
        while (true) {
            while (in.available() > 0) {
                int i = in.read(tmp, 0, MAXCOMMANDBYTES);
                if (i < 0) {
                    break;
                }
                if (!verbose) {
                    System.out.print("o");
                } else {
                    System.out.print(new String(tmp, 0, i));
                }
            }
            if (channel.isClosed()) {
                GNSConfig.getLogger().log(Level.FINE, "exit status: {0}", channel.getExitStatus());
                break;
            }
            try {
                Thread.sleep(1000);
            } catch (Exception ee) {
            }
        }
        channel.disconnect();
        session.disconnect();
    } catch (JSchException | IOException e) {
        e.printStackTrace();
        GNSConfig.getLogger().severe(e.toString());
    }
}