resourceaccessevent.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.policyframework;

import com.sslexplorer.boot.Util;
import com.sslexplorer.core.CoreAttributeConstants;
import com.sslexplorer.core.CoreEvent;
import com.sslexplorer.security.SessionInfo;

/**
 * Extension of a {@link com.sslexplorer.core.CoreEvent} that should be used
 * when a {@link Resource} is accessed in some way. For example, such an event
 * should be fired when the user launches a <i>Web Forward</i>
 * 
 * @author Brett Smith <a href="mailto: [e-mail]">&lt;[e-mail]&gt;</a>
 * @version $Revision: 1.6 $
 */
public class ResourceAccessEvent extends CoreEvent {

    private Policy policy;
    private Resource resource;

    /**
     * Constructor for {@link CoreEvent#STATE_UNSUCCESSFUL} that also takes the
     * message from an exception and adds it as an attribute
     * 
     * @param source source of event
     * @param id event ID
     * @param session session that fired the event
     * @param exception exception
     */
    public ResourceAccessEvent(Object source, int id, SessionInfo session, Throwable exception) {
        super(source, id, exception, session, STATE_UNSUCCESSFUL);
        addAttribute(CoreAttributeConstants.EVENT_ATTR_EXCEPTION_MESSAGE, Util.getExceptionMessageChain(exception));
    }

    /**
     * Constructor for {@link CoreEvent#STATE_UNSUCCESSFUL} that also takes the
     * message from an exception and adds it as an attribute
     * 
     * @param source source of event
     * @param id event ID
     * @param resource resource accessed
     * @param policy the policy resource access was attempted under
     * @param session session that fired the event
     * @param exception exception
     */
    public ResourceAccessEvent(Object source, int id, Resource resource, Policy policy, SessionInfo session, Throwable exception) {
        this(source, id, resource, policy, session, STATE_UNSUCCESSFUL);
        addAttribute(CoreAttributeConstants.EVENT_ATTR_EXCEPTION_MESSAGE, Util.getExceptionMessageChain(exception));
    }

    /**
     * Constructor
     * 
     * @param source source of event
     * @param id event ID
     * @param resource resource accessed
     * @param policy the policy resource access was attempted under
     * @param session session that fired the event
     * @param state event state
     */
    public ResourceAccessEvent(Object source, int id, Resource resource, Policy policy, SessionInfo session, int state) {
        super(source, id, resource, session, state);
        this.resource = resource;
        this.policy = policy;
        if (state == CoreEvent.STATE_UNSUCCESSFUL || (state == CoreEvent.STATE_SUCCESSFUL && resource != null)) {
            if (resource != null) {
                //addAttribute(CoreAttributeConstants.EVENT_ATTR_RESOURCE_ID, String.valueOf(resource.getResourceId()));
                addAttribute(CoreAttributeConstants.EVENT_ATTR_RESOURCE_NAME, resource.getResourceName());
                //addAttribute(CoreAttributeConstants.EVENT_ATTR_RESOURCE_DESCRIPTION, resource.getResourceDescription());
                //addAttribute(CoreAttributeConstants.EVENT_ATTR_PARENT_RESOURCE_PERMISSION, String.valueOf(resource
                //                .getParentResourcePermission()));
                //addAttribute(CoreAttributeConstants.EVENT_ATTR_RESOURCE_TYPE_ID, String.valueOf(resource.getResourceType()
                //                .getResourceTypeId()));
                if (resource instanceof OwnedResource) {
                    OwnedResource or = (OwnedResource) resource;
                    if (or.getOwnerUsername() != null) {
                        addAttribute(CoreAttributeConstants.EVENT_ATTR_RESOURCE_OWNER, or.getOwnerUsername());
                    }

                }
            }
        } else {
            throw new IllegalArgumentException("Must provide a non-null resource if the event was successful.");
        }
    }

    /**
     * Get the policy resource access was attempted under. This will only be
     * available on successful events
     * 
     * @return policy
     */
    public Policy getPolicy() {
        return policy;
    }

    /**
     * Get the resource. This will only be available on successful events
     * 
     * @return resource
     */
    public Resource getResource() {
        return resource;
    }

}