navigationbar.java

这是linux下ssl vpn的实现程序

/*
 *  SSL-Explorer
 *
 *  Copyright (C) 2003-2006 3SP LTD. All Rights Reserved
 *
 *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
			
package com.sslexplorer.navigation;

import javax.servlet.http.HttpServletRequest;

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

import com.sslexplorer.core.CoreServlet;
import com.sslexplorer.core.CoreUtil;
import com.sslexplorer.core.MenuItem;
import com.sslexplorer.policyframework.Permission;
import com.sslexplorer.policyframework.PolicyConstants;
import com.sslexplorer.policyframework.ResourceType;
import com.sslexplorer.security.SessionInfo;

public class NavigationBar extends MenuTree {

    public static final String NAV_BAR_MENU_TREE = "navBar";

    final static Log log = LogFactory.getLog(NavigationBar.class);

    public NavigationBar() {
        super(NAV_BAR_MENU_TREE);
        addMenuItem(null, new LaunchVPNClientMenuItem());
        addMenuItem(null, new ShutdownVPNClientMenuItem());
        addMenuItem(null, new MenuItem("home", "navigation", "/showHome.do", 200, true, "_self", SessionInfo.USER_CONSOLE_CONTEXT
                        | SessionInfo.MANAGEMENT_CONSOLE_CONTEXT));

        addMenuItem(null, new MenuItem("managementConsole", "navigation", "/managementConsole.do", 300, true, "_self",
                        SessionInfo.USER_CONSOLE_CONTEXT) {

            public boolean isAvailable(int checkNavigationContext, SessionInfo info, HttpServletRequest request) {
                boolean available = super.isAvailable(checkNavigationContext, info, request);
                if (available) {
                    try {
                        available = CoreServlet.getServlet().getPolicyDatabase().isAnyResourcePermissionAllowed(info.getUser(),
                            true, true, false)
                                        && CoreUtil.isMenuAvailable(request);
                    } catch (Exception e) {
                        log.error("Failed to determine delegation rights.", e);
                        available = false;
                    }
                }
                return available;
            }

        });
        addMenuItem(null, new MenuItem("userConsole", "navigation", "/userConsole.do", 300, true, "_self",
                        SessionInfo.MANAGEMENT_CONSOLE_CONTEXT) {

            public boolean isAvailable(int checkNavigationContext, SessionInfo info, HttpServletRequest request) {
                boolean available = super.isAvailable(checkNavigationContext, info, request);
                if (available) {
                    try {
                        available = CoreServlet.getServlet().getPolicyDatabase().isAnyResourcePermissionAllowed(info.getUser(),
                            true, true, false)
                                        && CoreUtil.isMenuAvailable(request);
                    } catch (Exception e) {
                        log.error("Failed to determine delegation rights.", e);
                        available = false;
                    }
                }
                return available;
            }

        });
        addMenuItem(
            null,
            new MenuItem(
                            "help",
                            "navigation",
                            "javascript: this.blur(); windowRef = window.open('/help.do?source=help','help_win','left=20,top=20,width=320,height=480,toolbar=0,resizable=1,menubar=0,scrollbars=1'); windowRef.focus()",
                            400, true, "_self", SessionInfo.ALL_CONTEXTS));
        addMenuItem(null, new MenuItem("logoff", "navigation", "/logoff.do", 500, true, "_self", SessionInfo.USER_CONSOLE_CONTEXT
                        | SessionInfo.MANAGEMENT_CONSOLE_CONTEXT));
    }

    class LaunchVPNClientMenuItem extends MenuItem {
        LaunchVPNClientMenuItem() {
            super("launchVPNClient", "navigation", "/launchVPNClient.do", 100, true, null, SessionInfo.USER_CONSOLE_CONTEXT
                            | SessionInfo.MANAGEMENT_CONSOLE_CONTEXT, PolicyConstants.VPN_CLIENT_RESOURCE_TYPE,
                            new Permission[] { PolicyConstants.PERM_USE }, (ResourceType) null);
        }

        public boolean isAvailable(int checkNavigationContext, SessionInfo info, HttpServletRequest request) {
            boolean available = super.isAvailable(checkNavigationContext, info, request);
            if (available) {
                available = !CoreUtil.isInWizard(request.getSession()) && !CoreUtil.isVPNClientAvailable(request.getSession())
                                && CoreUtil.isMenuAvailable(request);
            }
            return available;
        }
    }
    class ShutdownVPNClientMenuItem extends MenuItem {
        ShutdownVPNClientMenuItem() {
            super("shutdownVPNClient", "navigation", "/shutdownVPNClient.do", 100, true, null,
                SessionInfo.USER_CONSOLE_CONTEXT | SessionInfo.MANAGEMENT_CONSOLE_CONTEXT,
                PolicyConstants.VPN_CLIENT_RESOURCE_TYPE, new Permission[] { PolicyConstants.PERM_USE }, null);
        }

        public boolean isAvailable(int checkNavigationContext, SessionInfo info, HttpServletRequest request) {
            boolean available = super.isAvailable(checkNavigationContext, info, request);
            if (available) {
                available = !CoreUtil.isInWizard(request.getSession()) && CoreUtil.isVPNClientAvailable(request.getSession())
                                && CoreUtil.isMenuAvailable(request);
            }
            return available;
        }
    }
}