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From "Zabee Ulla (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SSHD-922) CD - change directory is not working. clientSession.executeRemoteCommand("cd " + directory)
Date Mon, 15 Jul 2019 10:39:00 GMT

     [ https://issues.apache.org/jira/browse/SSHD-922?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zabee Ulla updated SSHD-922:
----------------------------
    Description: 
I am writing an SSHD client to execute BASH commands on a remove Linux VM. My functionality
requires to change directories at several points. 

I have written and using below code and not finding change directory working. I tried a
few other Linux commands and am able to execute them perfectly except change directory. 

This is a blocker for me to embed and implement Apache SSHD client for my application. 

Please note that "pwd" output is same before and after _+*session.executeRemoteCommand("cd
" + argDirectory);*+_'s execution.

/**
 * An implementation of an SFTP client that uses the Apache Mina library.
 */
 public class MinaSftp {

_public void changeRemoteDirectory(String argDirectory)_
 _throws IOException {_
 _try {_
 _System.out.println("Present working direcotry :\n " + _session.executeRemoteCommand("pwd"));_

_+*String output = _session.executeRemoteCommand("cd " + argDirectory);*+_

_System.out.println("Present working direcotry :\n " + _session.executeRemoteCommand("pwd"));_
 _System.out.println("Change directory output: " + output);_
 _}_
 _catch (IOException ex) {_
 _handleException(ex, action);_
 _}_
 _}_

private static Collection<ClientChannelEvent> ccEvents = Arrays.asList(ClientChannelEvent.CLOSED);

private String _username = "userName";
 private String _password = "password";
 private String _host = "aValidHostName";
 private ClientSession _session;
 private ClientChannel _channel;
 private SshClient _client;

// Some valid port number
 private int portNumber = 8999;

 

public void connect()
 throws IOException {

_client = SshClient.setUpDefaultClient();
 _client.start();

ConnectFuture connectFuture = _client.connect(_username, _host, portNumber);
 connectFuture.await();
 _session = connectFuture.getSession();
shellChannel = _session.createShellChannel();
 _session.addPasswordIdentity(_password);

// TODO : fix timeout
 _session.auth().verify(Integer.MAX_VALUE);

if (_session.isAuthenticated())

{ System.out.println("Authentication successful"); }

else

{ System.out.println("Authentication failed"); }

_channel.waitFor(ccEvents, 200);
 }

public void disconnect() {
 LOG.debug("Disconnecting from the SFTP host.");

// Disconnecting the session disconnects all of the connected channels as well.
 if (_channel != null) {
 try

{ _channel.close(); }

catch (Exception e)

{ // Do nothing. This is okay. }

}
 if (_session != null)

{ _session.close(false); }

if (_client != null)

{ _client.stop(); }

}

private void handleException(Exception argEx, String argAction)
 throws IOException

{ throw LOG.throwing(new IOException(argAction + " on the SFTP host threw an exception.",
argEx)); }

}

  was:
I am writing an SSHD client to execute BASH commands on a remove Linux VM. My functionality
requires to change directories at several points. 

I have written and using below code and not finding change directory working. I tried a
few other Linux commands and am able to execute them perfectly except change directory. 

This is a blocker for me to embed and implement Apache SSHD client for my application. 

Please note that "pwd" output is same before and after _+*session.executeRemoteCommand("cd
" + argDirectory);*+_'s execution.

/**
 * An implementation of an SFTP client that uses the Apache Mina library.
 */
 public class MinaSftp {

_public void changeRemoteDirectory(String argDirectory)_
 _throws IOException {_
 _try {_
 _System.out.println("Present working direcotry :\n " + _session.executeRemoteCommand("pwd"));_

_+*String output = _session.executeRemoteCommand("cd " + argDirectory);*+_

_System.out.println("Present working direcotry :\n " + _session.executeRemoteCommand("pwd"));_
 _System.out.println("Change directory output: " + output);_
 _}_
 _catch (IOException ex) {_
 _handleException(ex, action);_
 _}_
 _}_

private static Collection<ClientChannelEvent> ccEvents = Arrays.asList(ClientChannelEvent.CLOSED);

private String _username = "userName";
 private String _password = "password";
 private String _host = "aValidHostName";
 private ClientSession _session;
 private ClientChannel _channel;
 private SshClient _client;

// Some valid port number
 private int portNumber = 8999;

 

public void connect()
 throws IOException {

_client = SshClient.setUpDefaultClient();
 _client.start();

ConnectFuture connectFuture = _client.connect(_username, _host, portNumber);
 connectFuture.await();
 _session = connectFuture.getSession();
 _channel = _session.createChannel(ClientChannel.CHANNEL_SHELL);
 _session.addPasswordIdentity(_password);

// TODO : fix timeout
 _session.auth().verify(Integer.MAX_VALUE);

if (_session.isAuthenticated())

{ System.out.println("Authentication successful"); }

else

{ System.out.println("Authentication failed"); }

_channel.waitFor(ccEvents, 200);
 }

public void disconnect() {
 LOG.debug("Disconnecting from the SFTP host.");

// Disconnecting the session disconnects all of the connected channels as well.
 if (_channel != null) {
 try

{ _channel.close(); }

catch (Exception e)

{ // Do nothing. This is okay. }

}
 if (_session != null)

{ _session.close(false); }

if (_client != null)

{ _client.stop(); }

}

private void handleException(Exception argEx, String argAction)
 throws IOException

{ throw LOG.throwing(new IOException(argAction + " on the SFTP host threw an exception.",
argEx)); }

}


> CD - change directory is not working. clientSession.executeRemoteCommand("cd " + directory)
> -------------------------------------------------------------------------------------------
>
>                 Key: SSHD-922
>                 URL: https://issues.apache.org/jira/browse/SSHD-922
>             Project: MINA SSHD
>          Issue Type: Bug
>    Affects Versions: 2.2.0
>         Environment: Trying to connect to a Linux VM from Windows OS
>            Reporter: Zabee Ulla
>            Assignee: Goldstein Lyor
>            Priority: Blocker
>
> I am writing an SSHD client to execute BASH commands on a remove Linux VM. My functionality
requires to change directories at several points. 
> I have written and using below code and not finding change directory working. I tried
a few other Linux commands and am able to execute them perfectly except change directory. 
> This is a blocker for me to embed and implement Apache SSHD client for my application.

> Please note that "pwd" output is same before and after _+*session.executeRemoteCommand("cd
" + argDirectory);*+_'s execution.
> /**
>  * An implementation of an SFTP client that uses the Apache Mina library.
>  */
>  public class MinaSftp {
> _public void changeRemoteDirectory(String argDirectory)_
>  _throws IOException {_
>  _try {_
>  _System.out.println("Present working direcotry :\n " + _session.executeRemoteCommand("pwd"));_
> _+*String output = _session.executeRemoteCommand("cd " + argDirectory);*+_
> _System.out.println("Present working direcotry :\n " + _session.executeRemoteCommand("pwd"));_
>  _System.out.println("Change directory output: " + output);_
>  _}_
>  _catch (IOException ex) {_
>  _handleException(ex, action);_
>  _}_
>  _}_
> private static Collection<ClientChannelEvent> ccEvents = Arrays.asList(ClientChannelEvent.CLOSED);
> private String _username = "userName";
>  private String _password = "password";
>  private String _host = "aValidHostName";
>  private ClientSession _session;
>  private ClientChannel _channel;
>  private SshClient _client;
> // Some valid port number
>  private int portNumber = 8999;
>  
> public void connect()
>  throws IOException {
> _client = SshClient.setUpDefaultClient();
>  _client.start();
> ConnectFuture connectFuture = _client.connect(_username, _host, portNumber);
>  connectFuture.await();
>  _session = connectFuture.getSession();
> shellChannel = _session.createShellChannel();
>  _session.addPasswordIdentity(_password);
> // TODO : fix timeout
>  _session.auth().verify(Integer.MAX_VALUE);
> if (_session.isAuthenticated())
> { System.out.println("Authentication successful"); }
> else
> { System.out.println("Authentication failed"); }
> _channel.waitFor(ccEvents, 200);
>  }
> public void disconnect() {
>  LOG.debug("Disconnecting from the SFTP host.");
> // Disconnecting the session disconnects all of the connected channels as well.
>  if (_channel != null) {
>  try
> { _channel.close(); }
> catch (Exception e)
> { // Do nothing. This is okay. }
> }
>  if (_session != null)
> { _session.close(false); }
> if (_client != null)
> { _client.stop(); }
> }
> private void handleException(Exception argEx, String argAction)
>  throws IOException
> { throw LOG.throwing(new IOException(argAction + " on the SFTP host threw an exception.",
argEx)); }
> }



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