/**
* Creates a shell channel to the remote machine a new jsch session is also created if the current
* one is invalid
*
* @param sshContact the contact of the remote machine
* @param firstMessage the first message
*/
public void connectShell(final ContactSSH sshContact, final Message firstMessage) {
sshContact.setConnectionInProgress(true);
final UIService uiService = this.uiService;
final Thread newConnection =
new Thread(
(new Runnable() {
public void run() {
OperationSetPersistentPresenceSSHImpl persistentPresence =
(OperationSetPersistentPresenceSSHImpl)
sshContact.getParentPresenceOperationSet();
persistentPresence.changeContactPresenceStatus(
sshContact, SSHStatusEnum.CONNECTING);
try {
if (!isSessionValid(sshContact)) createSSHSessionAndLogin(sshContact);
createShellChannel(sshContact);
// initalizing the reader and writers of ssh contact
persistentPresence.changeContactPresenceStatus(
sshContact, SSHStatusEnum.CONNECTED);
showWelcomeMessage(sshContact);
sshContact.setMessageType(sshContact.CONVERSATION_MESSAGE_RECEIVED);
sshContact.setConnectionInProgress(false);
Thread.sleep(1500);
sshContact.setCommandSent(true);
basicInstantMessaging.sendInstantMessage(sshContact, firstMessage);
}
// rigoruos Exception Checking in future
catch (Exception ex) {
persistentPresence.changeContactPresenceStatus(
sshContact, SSHStatusEnum.NOT_AVAILABLE);
ex.printStackTrace();
} finally {
sshContact.setConnectionInProgress(false);
}
}
}));
newConnection.start();
}
/**
* Initializes the server stored list. Synchronize server stored groups and contacts with the
* local groups and contacts.
*/
@Override
public void init() {
try {
SipAccountIDImpl accountID = (SipAccountIDImpl) sipProvider.getAccountID();
if (!accountID.isXiVOEnable()) return;
boolean useSipCredentials = accountID.isClistOptionUseSipCredentials();
String serverAddress = accountID.getClistOptionServerUri();
String username = accountID.getAccountPropertyString(ProtocolProviderFactory.USER_ID);
Address userAddress = sipProvider.parseAddressString(username);
if (useSipCredentials) {
username = ((SipUri) userAddress.getURI()).getUser();
} else {
username = accountID.getClistOptionUser();
}
try {
connect(serverAddress);
} catch (Throwable ex) {
showError(ex, null, null);
logger.error("Error connecting to server", ex);
return;
}
Thread thread = new Thread(this, this.getClass().getName());
thread.setDaemon(true);
thread.start();
if (!login(username)) {
showError(null, null, "Unauthorized. Cannot login.");
logger.error("Cannot login.");
return;
}
} catch (Throwable t) {
logger.error("Error init clist from xivo server");
}
}
/**
* 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");
}
