Package com.sshtools.common.ui

Source Code of com.sshtools.common.ui.SshToolsApplicationClientPanel$SinkHostKeyVerification

/*
*  SSHTools - Java SSH2 API
*
*  Copyright (C) 2002-2003 Lee David Painter and Contributors.
*
*  Contributions made by:
*
*  Brett Smith
*  Richard Pernavas
*  Erwin Bolwidt
*
*  This program is free software; you can redistribute it and/or
*  modify it under the terms of the GNU General Public License
*  as published by the Free Software Foundation; either version 2
*  of the License, or (at your option) any later version.
*
*  This program is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  You should have received a copy of the GNU General Public License
*  along with this program; if not, write to the Free Software
*  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/
package com.sshtools.common.ui;

import com.sshtools.common.authentication.AuthenticationDialog;
import com.sshtools.common.authentication.BannerDialog;
import com.sshtools.common.authentication.KBIRequestHandlerDialog;
import com.sshtools.common.authentication.PasswordAuthenticationDialog;
import com.sshtools.common.authentication.PasswordChange;
import com.sshtools.common.authentication.PublicKeyAuthenticationPrompt;
import com.sshtools.common.automate.RemoteIdentification;
import com.sshtools.common.automate.RemoteIdentificationException;
import com.sshtools.common.automate.RemoteIdentificationFactory;
import com.sshtools.common.configuration.InvalidProfileFileException;
import com.sshtools.common.configuration.SshToolsConnectionProfile;
import com.sshtools.common.hosts.DialogKnownHostsKeyVerification;

import com.sshtools.j2ssh.SshClient;
import com.sshtools.j2ssh.SshException;
import com.sshtools.j2ssh.SshThread;
import com.sshtools.j2ssh.agent.AgentAuthenticationClient;
import com.sshtools.j2ssh.agent.AgentNotAvailableException;
import com.sshtools.j2ssh.agent.SshAgentClient;
import com.sshtools.j2ssh.authentication.AuthenticationProtocolState;
import com.sshtools.j2ssh.authentication.KBIAuthenticationClient;
import com.sshtools.j2ssh.authentication.PasswordAuthenticationClient;
import com.sshtools.j2ssh.authentication.PublicKeyAuthenticationClient;
import com.sshtools.j2ssh.authentication.SshAuthenticationClient;
import com.sshtools.j2ssh.authentication.SshAuthenticationClientFactory;
import com.sshtools.j2ssh.configuration.ConfigurationLoader;
import com.sshtools.j2ssh.transport.AbstractKnownHostsKeyVerification;
import com.sshtools.j2ssh.transport.HostKeyVerification;
import com.sshtools.j2ssh.transport.InvalidHostFileException;
import com.sshtools.j2ssh.transport.TransportProtocolException;
import com.sshtools.j2ssh.transport.TransportProtocolState;
import com.sshtools.j2ssh.transport.publickey.SshPublicKey;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import java.awt.Frame;
import java.awt.LayoutManager;

import java.io.File;
import java.io.FilePermission;
import java.io.IOException;

import java.security.AccessControlException;
import java.security.AccessController;

import java.util.Comparator;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import javax.swing.JFileChooser;
import javax.swing.JOptionPane;
import javax.swing.SwingConstants;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.filechooser.FileFilter;


/**
*
*
* @author $author$
* @version $Revision: 1.24 $
*/
public abstract class SshToolsApplicationClientPanel
    extends SshToolsApplicationPanel {
    /**  */
    public final static String PREF_CONNECTION_FILE_DIRECTORY = "sshapps.connectionFile.directory";

    //

    /**  */
    public final static int BANNER_TIMEOUT = 2000;

    /**  */
    protected static AbstractKnownHostsKeyVerification ver;

    //

    /**  */
    protected Log log = LogFactory.getLog(SshToolsApplicationClientPanel.class);

    /**  */
    protected HostKeyVerification hostKeyVerification;

    /**  */
    protected File currentConnectionFile;

    /**  */
    protected boolean needSave;

    /**  */
    protected SshToolsConnectionProfile currentConnectionProfile;

    /**  */
    protected javax.swing.filechooser.FileFilter connectionFileFilter = new ConnectionFileFilter();

    /**  */
    protected SshClient ssh;

    /**
* Creates a new SshToolsApplicationClientPanel object.
*/
    public SshToolsApplicationClientPanel() {
        super();
    }

    /**
* Creates a new SshToolsApplicationClientPanel object.
*
* @param mgr
*/
    public SshToolsApplicationClientPanel(LayoutManager mgr) {
        super(mgr);
    }

    /**
*
*
* @return
*/
    public abstract SshToolsConnectionTab[] getAdditionalConnectionTabs();

    /**
*
*
* @return
*/
    public HostKeyVerification getHostKeyVerification() {
        return hostKeyVerification;
    }

    /**
*
*
* @param hostKeyVerification
*/
    public void setHostHostVerification(HostKeyVerification hostKeyVerification) {
        this.hostKeyVerification = hostKeyVerification;
    }

    /**
*
*
* @param application
*
* @throws SshToolsApplicationException
*/
    public void init(SshToolsApplication application)
        throws SshToolsApplicationException {
        super.init(application);

        try {
            //if (ver == null) {
            ver = new DialogKnownHostsKeyVerification(this);

            //}
            setHostHostVerification(ver);

            if (ver.isHostFileWriteable()) {
                application.addAdditionalOptionsTab(new HostsTab(ver));
            }
        } catch (InvalidHostFileException uhfe) {
            log.warn("Host key verification will be DISABLED.", uhfe);
        }
    }

    /**
*
*/
    public void editConnection() {
        // Create a file chooser with the current directory set to the
        // application home
        JFileChooser fileDialog = new JFileChooser(PreferencesStore.get(
                    PREF_CONNECTION_FILE_DIRECTORY,
                    System.getProperty("sshtools.home",
                        System.getProperty("user.home"))));
        fileDialog.setFileFilter(connectionFileFilter);

        // Show it
        int ret = fileDialog.showOpenDialog(this);

        // If we've approved the selection then process
        if (ret == fileDialog.APPROVE_OPTION) {
            PreferencesStore.put(PREF_CONNECTION_FILE_DIRECTORY,
                fileDialog.getCurrentDirectory().getAbsolutePath());

            // Get the file
            File f = fileDialog.getSelectedFile();

            // Load the profile
            SshToolsConnectionProfile p = new SshToolsConnectionProfile();

            try {
                p.open(f);

                if (editConnection(p)) {
                    saveConnection(false, f, p);
                }
            } catch (IOException ioe) {
                showErrorMessage(this, "Failed to load connection profile.",
                    "Error", ioe);
            }
        }
    }

    /**
*
*
* @param profile
*
* @return
*/
    public SshToolsConnectionProfile newConnectionProfile(
        SshToolsConnectionProfile profile) {
        return SshToolsConnectionPanel.showConnectionDialog(SshToolsApplicationClientPanel.this,
            profile, getAdditionalConnectionTabs());
    }

    /**
*
*/
    public void open() {
        // Create a file chooser with the current directory set to the
        // application home
        String prefsDir = super.getApplication()
                               .getApplicationPreferencesDirectory()
                               .getAbsolutePath();
        JFileChooser fileDialog = new JFileChooser(prefsDir);
        fileDialog.setFileFilter(connectionFileFilter);

        // Show it
        int ret = fileDialog.showOpenDialog(this);

        // If we've approved the selection then process
        if (ret == fileDialog.APPROVE_OPTION) {
            PreferencesStore.put(PREF_CONNECTION_FILE_DIRECTORY,
                fileDialog.getCurrentDirectory().getAbsolutePath());

            // Get the file
            File f = fileDialog.getSelectedFile();
            open(f);
        }
    }

    /**
*
*
* @param f
*/
    public void open(File f) {
        log.debug("Opening connection file " + f);

        // Make sure a connection is not already open
        if (isConnected()) {
            Option optNew = new Option("New", "New create a new window", 'n');
            Option optClose = new Option("Close", "Close current connection",
                    'l');
            Option optCancel = new Option("Cancel",
                    "Cancel the opening of this connection", 'c');
            OptionsDialog dialog = OptionsDialog.createOptionDialog(this,
                    new Option[] { optNew, optClose, optCancel },
                    "You already have a connection open. Select\n" +
                    "Close to close the current connection, New\n" +
                    "to create a new terminal or Cancel to abort.",
                    "Existing connection", optNew, null,
                    UIManager.getIcon("OptionPane.warningIcon"));
            UIUtil.positionComponent(SwingConstants.CENTER, dialog);
            dialog.setVisible(true);

            Option opt = dialog.getSelectedOption();

            if ((opt == null) || (opt == optCancel)) {
                return;
            } else if (opt == optNew) {
                try {
                    SshToolsApplicationContainer c = (SshToolsApplicationContainer) application.newContainer();
                    ((SshToolsApplicationClientPanel) c.getApplicationPanel()).open(f);

                    return;
                } catch (SshToolsApplicationException stae) {
                    log.error(stae);
                }
            } else {
                closeConnection(true);
            }
        }

        // Save to MRU
        if (getApplication().getMRUModel() != null) {
            getApplication().getMRUModel().add(f);
        }

        // Make sure its not invalid
        if (f != null) {
            // Create a new connection properties object
            SshToolsConnectionProfile profile = new SshToolsConnectionProfile();

            try {
                // Open the file
                profile.open(f.getAbsolutePath());
                setNeedSave(false);
                currentConnectionFile = f;
                setContainerTitle(f);

                // Connect with the new details.
                connect(profile, false);
            } catch (InvalidProfileFileException fnfe) {
                showExceptionMessage(fnfe.getMessage(), "Open Connection");
            } catch (SshException e) {
                e.printStackTrace();
                showExceptionMessage("An unexpected error occured!",
                    "Open Connection");
            }
        } else {
            showExceptionMessage("Invalid file specified", "Open Connection");
        }
    }

    /**
*
*
* @param profile
* @param newProfile
*/
    public void connect(final SshToolsConnectionProfile profile,
        final boolean newProfile) {
        // We need to connect
        ssh = new SshClient();

        // Set the current connection properties
        setCurrentConnectionProfile(profile);

        // We'll do the threading rather than j2ssh as we want to get errors
        Runnable r = new Runnable() {
                public void run() {
                    // Update the status bar
                    getStatusBar().setStatusText("Connecting");
                    getStatusBar().setHost(getCurrentConnectionProfile()
                                               .getHost(),
                        getCurrentConnectionProfile().getPort());
                    getStatusBar().setUser(getCurrentConnectionProfile()
                                               .getUsername());

                    //
                    try {
                        log.info("Connecting to " +
                            getCurrentConnectionProfile().getHost() + " as " +
                            getCurrentConnectionProfile().getUsername());
                        ssh.connect(getCurrentConnectionProfile(),
                            (getHostKeyVerification() == null)
                            ? new SinkHostKeyVerification()
                            : getHostKeyVerification());

                        // Set the remote id if we can find on
                        try {
                            RemoteIdentification rid = RemoteIdentificationFactory.getInstance(ssh.getServerId(),
                                    ssh.getConnectionProperties().getHost());
                            getStatusBar().setRemoteId(rid.getName(
                                    ssh.getServerId()));
                        } catch (RemoteIdentificationException ex) {
                            getStatusBar().setRemoteId("Unknown");
                        }

                        if (postConnection()) {
                            if (!authenticateUser(newProfile)) {
                                closeConnection(false);
                            } else {
                                setAvailableActions();
                            }
                        }
                    } catch (IOException sshe) {
                        ssh = null;
                        showExceptionMessage("Connection Error",
                            "Could not establish a connection to host: \n\n " +
                            sshe.getMessage());
                        SshToolsApplicationClientPanel.this.closeConnection(false);
                    } catch (SecurityException se) {
                        ssh = null;
                        showErrorMessage(SshToolsApplicationClientPanel.this,
                            "Error", se);
                        SshToolsApplicationClientPanel.this.closeConnection(false);
                    }
                }
            };

        Thread thread = new SshThread(r,
                application.getApplicationName() + " connection", true);
        thread.start();
    }

    /**
*
*
* @param ssh
* @param profile
*
* @throws IOException
*/
    public void connect(SshClient ssh, SshToolsConnectionProfile profile)
        throws IOException {
        this.ssh = ssh;

        if (!ssh.isAuthenticated()) {
            authenticateUser(false);
        }

        // Set the current connection properties
        setCurrentConnectionProfile(profile);
        authenticationComplete(false);
    }

    /**
*
*
* @param newProfile
*
* @return
*
* @throws IOException
*/
    protected boolean authenticateUser(boolean newProfile)
        throws IOException {
        // We should now authenticate
        int result = AuthenticationProtocolState.READY;

        // Our authenticated flag
        boolean authenticated = false;

        // Get the supported authentication methods
        java.util.List supported = SshAuthenticationClientFactory.getSupportedMethods();

        // If the server supports public key lets look for an agent and try
        // some of his keys
        if (supported.contains("publickey")) {
            if (System.getProperty("sshtools.agent") != null) {
                try {
                    SshAgentClient agent = SshAgentClient.connectLocalAgent("SSHTerm",
                            System.getProperty("sshtools.agent") /*, 5*/);
                    AgentAuthenticationClient aac = new AgentAuthenticationClient();
                    aac.setAgent(agent);
                    aac.setUsername(getCurrentConnectionProfile().getUsername());
                    result = ssh.authenticate(aac);
                    agent.close();
                } catch (AgentNotAvailableException ex) {
                    log.info("No agent was available for authentication");

                    // Just continue
                }

                if (result == AuthenticationProtocolState.COMPLETE) {
                    authenticationComplete(newProfile);

                    return true;
                }
            }
        }

        // Create a list for display that will contain only the
        // supported and available methods
        java.util.List display = new java.util.ArrayList();

        // Get the available methods
        java.util.List auths = null;
        auths = ssh.getAvailableAuthMethods(getCurrentConnectionProfile()
                                                .getUsername());

        // Did we receive a banner from the remote computer
        final String banner = ssh.getAuthenticationBanner(BANNER_TIMEOUT);

        if (banner != null) {
            if (!banner.trim().equals("")) {
                try {
                    SwingUtilities.invokeAndWait(new Runnable() {
                            public void run() {
                                BannerDialog.showBannerDialog(SshToolsApplicationClientPanel.this,
                                    banner);
                            }
                        });
                } catch (Exception e) {
                    log.error("Failed to invoke and wait on BannerDialog", e);
                }
            }
        }

        // Are there any authentication methods within the properties file?
        // Iterate through selecting only the supported and available
        Iterator it = supported.iterator();

        while (it.hasNext() && !authenticated) {
            Object obj = it.next();

            if (auths.contains(obj)) {
                display.add(obj);
            }
        }

        // First look to see if we have any authenticaiton methods available
        // in the profile properties object as this will overide a manual selection
        java.util.Map authMethods = (Map) ((HashMap) getCurrentConnectionProfile()
                                                         .getAuthenticationMethods()).clone();
        it = authMethods.entrySet().iterator();

        //Iterator it2 = null;
        java.util.List selected;

        // Loop until the user either cancels or completes
        boolean completed = false;
        SshAuthenticationClient auth;
        Map.Entry entry;
        String msg = null;

        while (!completed &&
                (ssh.getConnectionState().getValue() != TransportProtocolState.DISCONNECTED)) {
            auth = null;

            // Select an authentication method from the properties file or
            // prompt the user to choose
            if (it.hasNext()) {
                Object obj = it.next();

                if (obj instanceof Map.Entry) {
                    entry = (Map.Entry) obj;
                    auth = (SshAuthenticationClient) entry.getValue();
                } else if (obj instanceof String) {
                    auth = SshAuthenticationClientFactory.newInstance((String) obj);
                    auth.setUsername(getCurrentConnectionProfile().getUsername());
                } else {
                    closeConnection(true);
                    throw new IOException(
                        "Iterator of Map or List of String expected");
                }
            } else {
                selected = AuthenticationDialog.showAuthenticationDialog(this,
                        display, ((msg == null) ? "" : msg));

                if (selected.size() > 0) {
                    it = selected.iterator();
                } else {
                    closeConnection(true);

                    return false;
                }
            }

            if (auth != null) {
                // The password authentication client can act upon requests to change the password

                /* if (auth instanceof PasswordAuthenticationClient) {
PasswordAuthenticationDialog dialog = new PasswordAuthenticationDialog(SshTerminalPanel.this);
((PasswordAuthenticationClient) auth).setAuthenticationPrompt(dialog);
( (PasswordAuthenticationClient) auth)
.setPasswordChangePrompt(PasswordChange.getInstance());
PasswordChange.getInstance().setParentComponent(
SshTerminalPanel.this);
}*/

                // Show the implementations dialog
                // if(auth.showAuthenticationDialog()) {
                // Authentication with the details supplied
                result = showAuthenticationPrompt(auth); //ssh.authenticate(auth);

                if (result == AuthenticationProtocolState.FAILED) {
                    msg = auth.getMethodName() +
                        " authentication failed, try again?";
                }

                // If the result returned partial success then continue
                if (result == AuthenticationProtocolState.PARTIAL) {
                    // We succeeded so add to the connections authenticaiton
                    // list and continue on to the next one
                    getCurrentConnectionProfile().addAuthenticationMethod(auth);
                    msg = auth.getMethodName() +
                        " authentication succeeded but another is required";
                }

                if (result == AuthenticationProtocolState.COMPLETE) {
                    authenticated = true;

                    //If successfull add to the connections list so we can save later
                    getCurrentConnectionProfile().addAuthenticationMethod(auth);

                    // Set the completed flag
                    completed = true;
                    authenticationComplete(newProfile);
                }

                if (result == AuthenticationProtocolState.CANCELLED) {
                    ssh.disconnect();

                    return false;
                }

                //   }
                //  else {
                // User has cancelled the authenticaiton
                //       closeConnection(true);
                //       return false;
                //  }
            }

            // end of if
        }

        // end of while
        return authenticated;
    }

    /**
*
*
* @param instance
*
* @return
*
* @throws IOException
*/
    protected int showAuthenticationPrompt(SshAuthenticationClient instance)
        throws IOException {
        instance.setUsername(getCurrentConnectionProfile().getUsername());

        if (instance instanceof PasswordAuthenticationClient) {
            PasswordAuthenticationDialog dialog = new PasswordAuthenticationDialog((Frame) SwingUtilities.getAncestorOfClass(
                        Frame.class, SshToolsApplicationClientPanel.this));
            instance.setAuthenticationPrompt(dialog);
            ((PasswordAuthenticationClient) instance).setPasswordChangePrompt(PasswordChange.getInstance());
            PasswordChange.getInstance().setParentComponent(SshToolsApplicationClientPanel.this);
        } else if (instance instanceof PublicKeyAuthenticationClient) {
            PublicKeyAuthenticationPrompt prompt = new PublicKeyAuthenticationPrompt(SshToolsApplicationClientPanel.this);
            instance.setAuthenticationPrompt(prompt);
        } else if (instance instanceof KBIAuthenticationClient) {
            KBIAuthenticationClient kbi = new KBIAuthenticationClient();
            ((KBIAuthenticationClient) instance).setKBIRequestHandler(new KBIRequestHandlerDialog(
                    (Frame) SwingUtilities.getAncestorOfClass(Frame.class,
                        SshToolsApplicationClientPanel.this)));
        }

        return ssh.authenticate(instance);
    }

    /**
*
*
* @return
*/
    public abstract boolean postConnection();

    /**
*
*
* @param newProfile
*
* @throws SshException
* @throws IOException
*/
    public abstract void authenticationComplete(boolean newProfile)
        throws SshException, IOException;

    /**
*
*
* @param file
*/
    public void setContainerTitle(File file) {
        String verString = ConfigurationLoader.getVersionString(application.getApplicationName(),
                application.getApplicationVersion());

        if (container != null) {
            container.setContainerTitle((file == null) ? verString
                                                       : (verString + " [" +
                file.getName() + "]"));
        }
    }

    /**
*
*
* @param needSave
*/
    public void setNeedSave(boolean needSave) {
        if (needSave != this.needSave) {
            this.needSave = needSave;
            setAvailableActions();
        }
    }

    /**
*
*
* @param file
*/
    public void setCurrentConnectionFile(File file) {
        currentConnectionFile = file;
    }

    /**
*
*
* @return
*/
    public File getCurrentConnectionFile() {
        return currentConnectionFile;
    }

    /**
*
*
* @param profile
*/
    public void setCurrentConnectionProfile(SshToolsConnectionProfile profile) {
        currentConnectionProfile = profile;
    }

    /**
*
*
* @return
*/
    public SshToolsConnectionProfile getCurrentConnectionProfile() {
        return currentConnectionProfile;
    }

    /**
*
*
* @return
*/
    public boolean isNeedSave() {
        return needSave;
    }

    /**
*
*
* @return
*/
    public boolean isConnected() {
        return (ssh != null) && ssh.isConnected();
    }

    /**
*
*
* @throws SshException
*/
    public void connect() throws SshException {
        if (getCurrentConnectionProfile() == null) {
            throw new SshException(
                "Can't connect, no connection profile have been set.");
        }

        //  There isn't anywhere to store this setting yet
        connect(getCurrentConnectionProfile(), false);
    }

    /**
*
*
* @param disconnect
*/
    public void closeConnection(boolean disconnect) {
        //
        if (isNeedSave()) {
            //  Only allow saving of files if allowed by the security manager
            try {
                if (System.getSecurityManager() != null) {
                    AccessController.checkPermission(new FilePermission(
                            "<<ALL FILES>>", "write"));

                    if (JOptionPane.showConfirmDialog(this,
                                "You have unsaved changes to the connection " +
                                ((currentConnectionFile == null) ? "<Untitled>"
                                                                     : currentConnectionFile.getName()) +
                                ".\nDo you want to save the changes now?",
                                "Unsaved changes", JOptionPane.YES_NO_OPTION,
                                JOptionPane.QUESTION_MESSAGE) == JOptionPane.YES_OPTION) {
                        saveConnection(false, getCurrentConnectionFile(),
                            getCurrentConnectionProfile());
                        setNeedSave(false);
                    }
                }
            } catch (AccessControlException ace) {
                log.warn(
                    "Changes made to connection, but security manager won't allow saving of files.");
            }
        }

        setCurrentConnectionFile(null);
    }

    /**
*
*
* @return
*/
    protected boolean allowConnectionSettingsEditing() {
        return true;
    }

    /**
*
*
* @param profile
*
* @return
*/
    public boolean editConnection(SshToolsConnectionProfile profile) {
        final SshToolsConnectionPanel panel = new SshToolsConnectionPanel(allowConnectionSettingsEditing());
        SshToolsConnectionTab[] tabs = getAdditionalConnectionTabs();

        for (int i = 0; (tabs != null) && (i < tabs.length); i++) {
            tabs[i].setConnectionProfile(profile);
            panel.addTab(tabs[i]);
        }

        panel.setConnectionProfile(profile);

        final Option ok = new Option("Ok",
                "Apply the settings and close this dialog", 'o');
        final Option cancel = new Option("Cancel",
                "Close this dialog without applying the settings", 'c');
        OptionCallback callback = new OptionCallback() {
                public boolean canClose(OptionsDialog dialog, Option option) {
                    if (option == ok) {
                        return panel.validateTabs();
                    }

                    return true;
                }
            };

        OptionsDialog od = OptionsDialog.createOptionDialog(SshToolsApplicationClientPanel.this,
                new Option[] { ok, cancel }, panel, "Connection Settings", ok,
                callback, null);
        od.pack();
        UIUtil.positionComponent(SwingConstants.CENTER, od);
        od.setVisible(true);

        if (od.getSelectedOption() == ok) {
            panel.applyTabs();

            if (profile == getCurrentConnectionProfile()) {
                setNeedSave(true);
            }

            return true;
        }

        return false;
    }

    /**
*
*
* @param saveAs
* @param file
* @param profile
*
* @return
*/
    public File saveConnection(boolean saveAs, File file,
        SshToolsConnectionProfile profile) {
        if (profile != null) {
            if ((file == null) || saveAs) {
                String prefsDir = super.getApplication()
                                       .getApplicationPreferencesDirectory()
                                       .getAbsolutePath();
                JFileChooser fileDialog = new JFileChooser(prefsDir);
                fileDialog.setFileFilter(connectionFileFilter);

                int ret = fileDialog.showSaveDialog(this);

                if (ret == fileDialog.CANCEL_OPTION) {
                    return null;
                }

                file = fileDialog.getSelectedFile();

                if (!file.getName().toLowerCase().endsWith(".xml")) {
                    file = new File(file.getAbsolutePath() + ".xml");
                }
            }

            try {
                if (saveAs && file.exists()) {
                    if (JOptionPane.showConfirmDialog(this,
                                "File already exists. Are you sure?",
                                "File exists", JOptionPane.YES_NO_OPTION,
                                JOptionPane.WARNING_MESSAGE) == JOptionPane.NO_OPTION) {
                        return null;
                    }
                }

                // Check to make sure its valid
                if (file != null) {
                    // Save the connection details to file
                    log.debug("Saving connection to " + file.getAbsolutePath());
                    profile.save(file.getAbsolutePath());

                    if (profile == getCurrentConnectionProfile()) {
                        log.debug(
                            "Current connection saved, disabling save action.");
                        setNeedSave(false);
                    }

                    return file;
                } else {
                    showExceptionMessage("The file specified is invalid!",
                        "Save Connection");
                }
            } catch (InvalidProfileFileException e) {
                showExceptionMessage(e.getMessage(), "Save Connection");
            }
        }

        return null;
    }

    public static class ActionMenu implements Comparable {
        int weight;
        int mnemonic;
        String name;
        String displayName;

        public ActionMenu(String name, String displayName, int mnemonic,
            int weight) {
            this.name = name;
            this.displayName = displayName;
            this.mnemonic = mnemonic;
            this.weight = weight;
        }

        public int compareTo(Object o) {
            int i = new Integer(weight).compareTo(new Integer(
                        ((ActionMenu) o).weight));

            return (i == 0)
            ? displayName.compareTo(((ActionMenu) o).displayName) : i;
        }
    }

    class ToolBarActionComparator implements Comparator {
        public int compare(Object o1, Object o2) {
            int i = ((Integer) ((StandardAction) o1).getValue(StandardAction.TOOLBAR_GROUP)).compareTo((Integer) ((StandardAction) o2).getValue(
                        StandardAction.TOOLBAR_GROUP));

            return (i == 0)
            ? ((Integer) ((StandardAction) o1).getValue(StandardAction.TOOLBAR_WEIGHT)).compareTo((Integer) ((StandardAction) o2).getValue(
                    StandardAction.TOOLBAR_WEIGHT)) : i;
        }
    }

    class MenuItemActionComparator implements Comparator {
        public int compare(Object o1, Object o2) {
            int i = ((Integer) ((StandardAction) o1).getValue(StandardAction.MENU_ITEM_GROUP)).compareTo((Integer) ((StandardAction) o2).getValue(
                        StandardAction.MENU_ITEM_GROUP));

            return (i == 0)
            ? ((Integer) ((StandardAction) o1).getValue(StandardAction.MENU_ITEM_WEIGHT)).compareTo((Integer) ((StandardAction) o2).getValue(
                    StandardAction.MENU_ITEM_WEIGHT)) : i;
        }
    }

    class ConnectionFileFilter extends javax.swing.filechooser.FileFilter {
        public boolean accept(File f) {
            return f.isDirectory() ||
            f.getName().toLowerCase().endsWith(".xml");
        }

        public String getDescription() {
            return "Connection files (*.xml)";
        }
    }

    class SinkHostKeyVerification implements HostKeyVerification {
        public boolean verifyHost(String host, SshPublicKey pk)
            throws TransportProtocolException {
            log.warn("Accepting host " + host +
                " as host key verification is disabled.");

            return true;
        }
    }
}
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