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https://issues.apache.org/jira/browse/SSHD-922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16885078#comment-16885078
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Zabee Ulla commented on SSHD-922:
---------------------------------
Thank you all. I am sorry, I don't get it. [~lgoldstein] I tried creating the
shell channel (also, updated the code in the description) but it is the same.
[~gnt] I tried getting the input and output streams but not don't know how and
what to do after that. When I get the channels using getIn() and getOut() they
are NULL. Is there another way of executing Linux commands on the remote host?
Guidance on this (details or pointer to any documentation or APIs) will really
help to implement Mina into our project.
Thanks,
Zabee
> 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 shellChannel;
> 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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