/**
* The AIM server doesn't like it if we change states too often and we use this method to slow
* things down.
*/
private void pauseBetweenStateChanges() {
try {
Thread.sleep(5000);
} catch (InterruptedException ex) {
logger.debug("Pausing between state changes was interrupted", ex);
}
}
/**
* Creates a SSH Session with a remote machine and tries to login according to the details
* specified by Contact An appropriate message is shown to the end user in case the login fails
*
* @param sshContact ID of SSH Contact
* @throws JSchException if a JSch is unable to create a SSH Session with the remote machine
* @throws InterruptedException if the thread is interrupted before session connected or is timed
* out
* @throws OperationFailedException if not of above reasons :-)
*/
public void createSSHSessionAndLogin(ContactSSH sshContact)
throws JSchException, OperationFailedException, InterruptedException {
logger.info("Creating a new SSH Session to " + sshContact.getHostName());
// creating a new JSch Stack identifier for contact
JSch jsch = new JSch();
String knownHosts = (String) accountID.getAccountProperties().get("KNOWN_HOSTS_FILE");
if (!knownHosts.equals("Optional")) jsch.setKnownHosts(knownHosts);
String identitiyKey = (String) accountID.getAccountProperties().get("IDENTITY_FILE");
String userName = sshContact.getUserName();
// use the name of system user if the contact has not supplied SSH
// details
if (userName.equals("")) userName = System.getProperty("user.name");
if (!identitiyKey.equals("Optional")) jsch.addIdentity(identitiyKey);
// creating a new session for the contact
Session session =
jsch.getSession(
userName, sshContact.getHostName(), sshContact.getSSHConfigurationForm().getPort());
/**
* Creating and associating User Info with the session User Info passes authentication from
* sshContact to SSH Stack
*/
SSHUserInfo sshUserInfo = new SSHUserInfo(sshContact);
session.setUserInfo(sshUserInfo);
/** initializing the session */
session.connect(connectionTimeout);
int count = 0;
// wait for session to get connected
while (!session.isConnected() && count <= 30000) {
Thread.sleep(1000);
count += 1000;
logger.trace("SSH:" + sshContact.getHostName() + ": Sleep zzz .. ");
}
// if timeout have exceeded
if (count > 30000) {
sshContact.setSSHSession(null);
JOptionPane.showMessageDialog(
null, "SSH Connection attempt to " + sshContact.getHostName() + " timed out");
// error codes are not defined yet
throw new OperationFailedException(
"SSH Connection attempt to " + sshContact.getHostName() + " timed out", 2);
}
sshContact.setJSch(jsch);
sshContact.setSSHSession(session);
logger.info("A new SSH Session to " + sshContact.getHostName() + " Created");
}
/** Thread entry point. */
@Override
public void run() {
int status;
long progress;
String statusReason = "";
while (true) {
try {
Thread.sleep(10);
status = parseJabberStatus(jabberTransfer.getStatus());
progress = fileTransfer.getTransferedBytes();
if (status == FileTransferStatusChangeEvent.FAILED
|| status == FileTransferStatusChangeEvent.COMPLETED
|| status == FileTransferStatusChangeEvent.CANCELED
|| status == FileTransferStatusChangeEvent.REFUSED) {
if (fileTransfer instanceof OutgoingFileTransferJabberImpl) {
((OutgoingFileTransferJabberImpl) fileTransfer).removeThumbnailRequestListener();
}
// sometimes a filetransfer can be preparing
// and than completed :
// transfered in one iteration of current thread
// so it won't go through intermediate state - inProgress
// make sure this won't happen
if (status == FileTransferStatusChangeEvent.COMPLETED
&& fileTransfer.getStatus() == FileTransferStatusChangeEvent.PREPARING) {
fileTransfer.fireStatusChangeEvent(
FileTransferStatusChangeEvent.IN_PROGRESS, "Status changed");
fileTransfer.fireProgressChangeEvent(System.currentTimeMillis(), progress);
}
break;
}
fileTransfer.fireStatusChangeEvent(status, "Status changed");
fileTransfer.fireProgressChangeEvent(System.currentTimeMillis(), progress);
} catch (InterruptedException e) {
if (logger.isDebugEnabled()) logger.debug("Unable to sleep thread.", e);
}
}
if (jabberTransfer.getError() != null) {
logger.error(
"An error occured while transfering file: " + jabberTransfer.getError().getMessage());
}
if (jabberTransfer.getException() != null) {
logger.error(
"An exception occured while transfering file: ", jabberTransfer.getException());
if (jabberTransfer.getException() instanceof XMPPException) {
XMPPError error = ((XMPPException) jabberTransfer.getException()).getXMPPError();
if (error != null)
if (error.getCode() == 406 || error.getCode() == 403)
status = FileTransferStatusChangeEvent.REFUSED;
}
statusReason = jabberTransfer.getException().getMessage();
}
if (initialFileSize > 0
&& status == FileTransferStatusChangeEvent.COMPLETED
&& fileTransfer.getTransferedBytes() < initialFileSize) {
status = FileTransferStatusChangeEvent.CANCELED;
}
fileTransfer.fireStatusChangeEvent(status, statusReason);
fileTransfer.fireProgressChangeEvent(System.currentTimeMillis(), progress);
}