Java Code Examples for com.jcraft.jsch.Session#openChannel()

private void uploadFile( String dir, String file ) throws Exception {
  Session session = server.createJschSession();
  session.connect();
  try {
    ChannelSftp sftp = (ChannelSftp) session.openChannel( "sftp" );
    sftp.connect();
    try {
      sftp.mkdir( dir );
      sftp.cd( dir );
      sftp.put( new ByteArrayInputStream( "data".getBytes() ), file );
    } finally {
      sftp.disconnect();
    }
  } finally {
    session.disconnect();
  }
}
 

@Test
public void testCloseHandler(TestContext context) throws Exception {
  Async async = context.async();
  termHandler = term -> {
    term.closeHandler(v -> {
      async.complete();
    });
  };
  startShell();
  Session session = createSession("paulo", "secret", false);
  session.connect();
  Channel channel = session.openChannel("shell");
  channel.connect();
  channel.disconnect();
  session.disconnect();
}
 

@Test
public void testDifferentCharset(TestContext context) throws Exception {
  termHandler = term -> {
    term.write("\u20AC");
    term.close();
  };
  startShell(new SSHTermOptions().setDefaultCharset("ISO_8859_1").setPort(5000).setHost("localhost").setKeyPairOptions(
    new JksOptions().setPath("src/test/resources/server-keystore.jks").setPassword("wibble")).
    setAuthOptions(new JsonObject()
      .put("provider", "shiro")
      .put("type", "PROPERTIES")
      .put("config",
        new JsonObject().put("properties_path", "classpath:test-auth.properties"))));
  Session session = createSession("paulo", "secret", false);
  session.connect();
  Channel channel = session.openChannel("shell");
  channel.connect();
  InputStream in = channel.getInputStream();
  int b = in.read();
  context.assertEquals(63, b);
}
 

private boolean executeSSH(){ 
	//get deployment descriptor, instead of this hard coded.
	// or execute a script on the target machine which download artifact from nexus
       String command ="nohup java -jar -Dserver.port=8091 ./work/codebox/chapter6/chapter6.search/target/search-1.0.jar &";
      try{	
   	   System.out.println("Executing "+ command);
          java.util.Properties config = new java.util.Properties(); 
          config.put("StrictHostKeyChecking", "no");
          JSch jsch = new JSch();
          Session session=jsch.getSession("rajeshrv", "localhost", 22);
          session.setPassword("rajeshrv");
          
          session.setConfig(config);
          session.connect();
          System.out.println("Connected");
           
          ChannelExec channelExec = (ChannelExec)session.openChannel("exec");
          InputStream in = channelExec.getInputStream();
          channelExec.setCommand(command);
          channelExec.connect();
         
          BufferedReader reader = new BufferedReader(new InputStreamReader(in));
          String line;
          int index = 0;

          while ((line = reader.readLine()) != null) {
              System.out.println(++index + " : " + line);
          }
          channelExec.disconnect();
          session.disconnect();

          System.out.println("Done!");

      }catch(Exception e){
          e.printStackTrace();
          return false;
      }
	
	return true;
}
 

@Test
public void testTestCommand() throws JSchException, IOException {
    JSch jsch = new JSch();
    Session session = jsch.getSession("admin", "localhost", properties.getShell().getPort());
    jsch.addIdentity("src/test/resources/id_rsa");
    Properties config = new Properties();
    config.put("StrictHostKeyChecking", "no");
    session.setConfig(config);
    session.connect();
    ChannelShell channel = (ChannelShell) session.openChannel("shell");
    try (PipedInputStream pis = new PipedInputStream(); PipedOutputStream pos = new PipedOutputStream()) {
        channel.setInputStream(new PipedInputStream(pos));
        channel.setOutputStream(new PipedOutputStream(pis));
        channel.connect();
        pos.write("test run bob\r".getBytes(StandardCharsets.UTF_8));
        pos.flush();
        verifyResponseContains(pis, "test run bob");
    }
    channel.disconnect();
    session.disconnect();
}
 

@Override protected void getFileInfo(Session session)
    throws JSchException, UnsupportedEncodingException, SftpException {
  SFtpTaskOption option = (SFtpTaskOption) getWrapper().getTaskOption();
  ChannelSftp channel = (ChannelSftp) session.openChannel("sftp");
  channel.connect(1000);

  String remotePath = option.getUrlEntity().remotePath;
  String temp = CommonUtil.convertSFtpChar(getOption().getCharSet(), remotePath)
      + "/"
      + getWrapper().getEntity().getFileName();

  SftpATTRS attr = null;
  try {
    attr = channel.stat(temp);
  } catch (Exception e) {
    ALog.d(TAG, String.format("文件不存在，remotePath：%s", remotePath));
  }

  boolean isComplete = false;
  UploadEntity entity = getWrapper().getEntity();
  if (attr != null && attr.getSize() == entity.getFileSize()) {
    isComplete = true;
  }

  CompleteInfo info = new CompleteInfo();
  info.code = isComplete ? ISCOMPLETE : 200;
  info.obj = attr;
  channel.disconnect();
  callback.onSucceed(getWrapper().getKey(), info);
}
 

static RemoteCredentials getRemoteCredentials(
    String command, String user, String host, int port) {

  RemoteCredentials remoteCredentials = new RemoteCredentials();

  try {
    Session session = jsch.getSession(user, host, port);
    Properties config = new Properties();
    config.put("StrictHostKeyChecking", "no");
    config.put("PreferredAuthentications", "publickey");
    config.put("HashKnownHosts", "yes");

    session.setConfig(config);
    session.setPassword("");
    session.connect();

    ChannelExec channel = (ChannelExec) session.openChannel("exec");
    InputStream is = channel.getInputStream();

    channel.setCommand(command);
    channel.connect();

    String output = IOUtils.toString(is);
    log.debug("Remote credentials: {}", output);

    channel.disconnect();
    session.disconnect();

    output = output.replace("\n", "");
    remoteCredentials = objectMapper.readValue(output, RemoteCredentials.class);
  } catch (Exception e) {
    log.error("Remote SSH execution failed.", e);
  }

  return remoteCredentials;
}
 

/**
 * 抓遠端檔案然後存到本機 , 單筆
 * 
 * @param user
 * @param password
 * @param addr
 * @param port
 * @param remoteFile
 * @param localFile
 * @throws JSchException
 * @throws SftpException
 * @throws Exception
 */
public static void get(String user, String password, String addr, int port, 
		String remoteFile, String localFile) throws JSchException, SftpException, Exception {
			
	Session session = getSession(user, password, addr, port);
	Channel channel = session.openChannel("sftp");
	channel.connect();
	ChannelSftp sftpChannel = (ChannelSftp) channel;		
	logger.info("get remote file: " + remoteFile + " write to:" + localFile );	
	try {
		sftpChannel.get(remoteFile, localFile);
	} catch (Exception e) {
		e.printStackTrace();
		throw e;
	} finally {
		sftpChannel.exit();
		channel.disconnect();
		session.disconnect();			
	}
	File f=new File(localFile);
	if (!f.exists()) {
		f=null;
		logger.error("get remote file:"+remoteFile + " fail!");
		throw new Exception("get remote file:"+remoteFile + " fail!");
	}
	f=null;
	logger.info("success write:" + localFile);
}
 

public static void main(String[] args) throws JSchException, IOException {
    JSch jSch = new JSch();
    Session session = jSch.getSession(System.getenv("USER"), "localhost");
    Properties config = new Properties();
    config.put("StrictHostKeyChecking", "no");
    jSch.addIdentity(System.getProperty("user.home") + "/.ssh/id_rsa");
    session.setConfig(config);
    session.connect();
    Channel channel = session.openChannel("shell");
    channel.connect();

    Expect expect = new ExpectBuilder()
            .withOutput(channel.getOutputStream())
            .withInputs(channel.getInputStream(), channel.getExtInputStream())
            .build();
    try {
        expect.expect(contains("$"));
        expect.sendLine("pwd");
        System.out.println(
                "pwd1:" + expect.expect(times(2, contains("\n")))
                        .getResults()
                        .get(1)
                        .getBefore());
        expect.sendLine("pwd");
        // a regexp which captures the output of pwd
        System.out.println("pwd2:" + expect.expect(regexp("(?m)\\n([^\\n]*)\\n")).group(1));
        expect.expect(contains("$"));
        expect.sendLine("ls -l");
        // skipping the echo command
        expect.expect(times(2, contains("\n")));
        // getting the output of ls
        System.out.println(expect.expect(regexp(".*\\$")).getBefore().trim());
        expect.sendLine("exit");
    } finally {
        expect.close();
        channel.disconnect();
        session.disconnect();
    }
}
 

@DirtiesContext
@Test
public void testSftp2() throws Exception {
    Session session = openSession(props.getShell().getUsername(), props.getShell().getPassword());
    ChannelSftp sftp = (ChannelSftp) session.openChannel("sftp");
    sftp.connect();
    sftp.disconnect();
    session.disconnect();
    assertTrue(new File("target/sftp/admin").exists());
}
 

@DirtiesContext
@Test
public void testSftp() throws Exception {
    Session session = openSession(props.getShell().getUsername(), props.getShell().getPassword());
    ChannelSftp sftp = (ChannelSftp) session.openChannel("sftp");
    sftp.connect();
    sftp.disconnect();
    session.disconnect();
    assertTrue(new File("target/sftp/admin").exists());
}
 

@Override
public Channel create(final ChannelSessionKey key) throws Exception {
    Session session;
    synchronized (sessionMap) {
        session = sessionMap.get(key);
        if (session == null || !session.isConnected()) {
            session = prepareSession(key.remoteSystemConnection);
            session.connect();
            sessionMap.put(key, session);
            LOGGER.debug("session {} created and connected!", key);
        }
    }
    return session.openChannel(key.channelType.getChannelType());
}
 

/**
 * Gets the channel.
 * 
 * @param session
 *            the session
 * @param command
 *            the command
 * @return the channel
 * @throws JSchException
 *             the j sch exception
 * @throws IOException
 *             Signals that an I/O exception has occurred.
 */
public static Channel getChannel(Session session, String command) throws JSchException, IOException {
	session.connect();
	Channel channel = session.openChannel("exec");

	((ChannelExec) channel).setCommand(command);
	channel.setInputStream(null);

	InputStream in = channel.getInputStream();

	channel.connect();
	((ChannelExec) channel).setErrStream(System.err);

	byte[] tmp = new byte[RemotingConstants.ONE_ZERO_TWO_FOUR];
	while (true) {
		while (in.available() > 0) {
			int i = in.read(tmp, 0, RemotingConstants.ONE_ZERO_TWO_FOUR);
			if (i < 0){
				break;
			}
		}
		if (channel.isClosed()) {
			break;
		}
	}
	return channel;
}
 

public static String getDaemonProcessId(Session session, String daemon) throws JSchException, IOException {
	String command = PID_COMMAND_PREFIX + daemon + PID_COMMAND_SUFFIX;
	session.connect();
	Channel channel = session.openChannel("shell");
	channel.connect();
	OutputStream os = channel.getOutputStream();
	InputStream is = channel.getInputStream();
	PrintStream ps = new PrintStream(os, true);
	String pid = "";

	try (BufferedReader br = new BufferedReader(new InputStreamReader(is))) {
		ps.println(command);
		for (String line = br.readLine(); line != null; line = br.readLine()) {
			if (line.contains(daemon) && !line.contains("awk ")) {
				pid = line.split("\\s+")[1];
			}
		}
	}
	LOGGER.debug(" exit status - " + channel.getExitStatus() + ", daemon = " + daemon + ", PID = " + pid);

	if (channel != null && channel.isConnected()) {
		channel.disconnect();
	}
	if (session != null && session.isConnected()) {
		session.disconnect();
	}
	return pid;
}
 

/**
 * Upload a file to the remote host via scp.
 * 
 * @param session the session to use.
 * @param localFile the local file path.
 * @param remoteFile the remote file path to copy into. 
 * @throws Exception
 */
public static void uploadFile( Session session, String localFile, String remoteFile ) throws Exception {
    boolean ptimestamp = true;
    // exec 'scp -t rfile' remotely
    String command = "scp " + (ptimestamp ? "-p" : "") + " -t " + remoteFile;
    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();

    if (checkAck(in) != 0) {
        throw new RuntimeException();
    }

    File _lfile = new File(localFile);

    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();
        if (checkAck(in) != 0) {
            throw new RuntimeException();
        }
    }

    // send "C0644 filesize filename", where filename should not include '/'
    long filesize = _lfile.length();
    command = "C0644 " + filesize + " ";
    if (localFile.lastIndexOf('/') > 0) {
        command += localFile.substring(localFile.lastIndexOf('/') + 1);
    } else {
        command += localFile;
    }
    command += "\n";
    out.write(command.getBytes());
    out.flush();
    if (checkAck(in) != 0) {
        throw new RuntimeException();
    }

    // send a content of lfile
    FileInputStream fis = new FileInputStream(localFile);
    byte[] buf = new byte[1024];
    while( true ) {
        int len = fis.read(buf, 0, buf.length);
        if (len <= 0)
            break;
        out.write(buf, 0, len); // out.flush();
    }
    fis.close();
    fis = null;
    // send '\0'
    buf[0] = 0;
    out.write(buf, 0, 1);
    out.flush();
    if (checkAck(in) != 0) {
        throw new RuntimeException();
    }
    out.close();

    channel.disconnect();
}
 

public static void main(String[] args) throws JSchException, IOException {
    JSch jSch = new JSch();
    Session session = jSch.getSession("new", "sdf.org");
    Properties config = new Properties();
    config.put("StrictHostKeyChecking", "no");
    session.setConfig(config);
    session.connect();
    Channel channel = session.openChannel("shell");
    channel.connect();

    Expect expect = new ExpectBuilder()
            .withOutput(channel.getOutputStream())
            .withInputs(channel.getInputStream(), channel.getExtInputStream())
            .withEchoInput(System.out)
            .withEchoOutput(System.err)
            .withInputFilters(removeColors(), removeNonPrintable())
            .withExceptionOnFailure()
            .build();
    try {
        expect.expect(contains("[RETURN]"));
        expect.sendLine();
        String ipAddress = expect.expect(regexp("Trying (.*)\\.\\.\\.")).group(1);
        System.out.println("Captured IP: " + ipAddress);
        expect.expect(contains("login:"));
        expect.sendLine("new");
        expect.expect(contains("(Y/N)"));
        expect.send("N");
        expect.expect(regexp(": $"));
        expect.send("\b");
        expect.expect(regexp("\\(y\\/n\\)"));
        expect.sendLine("y");
        expect.expect(contains("Would you like to sign the guestbook?"));
        expect.send("n");
        expect.expect(contains("[RETURN]"));
        expect.sendLine();
    } finally {
        expect.close();
        channel.disconnect();
        session.disconnect();
    }
}
 

public static String execute(String ip, int port, String userName, String password, String secretKey, String shell) throws JSchException, IOException {
		String response = null;
		JSch.setLogger(new ShellLogger());
		JSch jsch = new JSch();
		Session session = jsch.getSession(userName, ip, port);
		UserInfo ui = null;
		if(StringUtils.isEmpty(secretKey)) {
			ui = new SSHUserInfo(password);
		} else {
			ui = new SSHGoogleAuthUserInfo(secretKey, password);
		}
		session.setUserInfo(ui);
		session.connect(6000);

		Channel channel = session.openChannel("shell");
		PipedInputStream pipedInputStream = new PipedInputStream();
		PipedOutputStream pipedOutputStream = new PipedOutputStream();
		pipedOutputStream.connect(pipedInputStream);
		
		Thread thread = new Thread(new MonitorShellUser(channel, shell, pipedOutputStream));
		thread.start();
		
		channel.setInputStream(pipedInputStream);
		
		PipedOutputStream shellPipedOutputStream = new PipedOutputStream();
		PipedInputStream receiveStream = new PipedInputStream(); 
		shellPipedOutputStream.connect(receiveStream);
		
		channel.setOutputStream(shellPipedOutputStream);
		((ChannelShell)channel).setPtyType("vt100", 160, 24, 1000, 480);   // dumb
		//((ChannelShell)channel).setTerminalMode("binary".getBytes(Constants.CHARSET));
	//	((ChannelShell)channel).setEnv("LANG", "zh_CN.UTF-8");
		try {
			channel.connect();
			response = IOUtils.toString(receiveStream, "UTF-8");
		}finally {
//			if(channel.isClosed()) {
				pipedOutputStream.close();
				pipedInputStream.close();
				shellPipedOutputStream.close();
				receiveStream.close();
				channel.disconnect();
				session.disconnect();
			}
//		}
			
		return response;
	}
 

private static ChannelSftp getChannel(Session session) throws JSchException {
	Channel channel = session.openChannel("sftp");
	channel.connect();
	ChannelSftp sftp = (ChannelSftp) channel;
	return sftp;
}
 

/**
 * Download a remote file via scp.
 * 
 * @param session the session to use.
 * @param remoteFilePath the remote file path.
 * @param localFilePath the local file path to copy into.
 * @throws Exception
 */
public static void downloadFile( Session session, String remoteFilePath, String localFilePath ) throws Exception {
    // exec 'scp -f rfile' remotely
    String command = "scp -f " + remoteFilePath;
    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();

    byte[] buf = new byte[1024];

    // send '\0'
    buf[0] = 0;
    out.write(buf, 0, 1);
    out.flush();

    while( true ) {
        int c = checkAck(in);
        if (c != 'C') {
            break;
        }

        // read '0644 '
        in.read(buf, 0, 5);

        long filesize = 0L;
        while( true ) {
            if (in.read(buf, 0, 1) < 0) {
                // error
                break;
            }
            if (buf[0] == ' ')
                break;
            filesize = filesize * 10L + (long) (buf[0] - '0');
        }

        String file = null;
        for( int i = 0;; i++ ) {
            in.read(buf, i, 1);
            if (buf[i] == (byte) 0x0a) {
                file = new String(buf, 0, i);
                break;
            }
        }

        System.out.println("filesize=" + filesize + ", file=" + file);

        // send '\0'
        buf[0] = 0;
        out.write(buf, 0, 1);
        out.flush();

        // read a content of lfile
        FileOutputStream fos = new FileOutputStream(localFilePath);
        int foo;
        while( true ) {
            if (buf.length < filesize)
                foo = buf.length;
            else
                foo = (int) filesize;
            foo = in.read(buf, 0, foo);
            if (foo < 0) {
                // error
                break;
            }
            fos.write(buf, 0, foo);
            filesize -= foo;
            if (filesize == 0L)
                break;
        }
        fos.close();

        if (checkAck(in) != 0) {
            throw new RuntimeException();
        }

        // send '\0'
        buf[0] = 0;
        out.write(buf, 0, 1);
        out.flush();
    }

}
 

/**
 * <<<<<<< Updated upstream Opens a new channel,sets the command,input and error streams and return it. ======= Opens a new channel,sets the
 * command,input and error streams and return it. >>>>>>> Stashed changes
 * 
 * @param session
 *            the session
 * @param command
 *            the command
 * @return the channel
 * @throws JSchException
 *             the j sch exception
 * @throws IOException
 *             Signals that an I/O exception has occurred.
 */
private Channel getChannel(Session session, String command) throws JSchException, IOException {

	Channel channel = session.openChannel(EXECUTION_MODE);
	((ChannelExec) channel).setCommand(command);
	channel.setInputStream(null);
	((ChannelExec) channel).setErrStream(System.err);
	channel.connect();
	return channel;
}