policynestingdatasource.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 java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts.util.LabelValueBean;

import com.sslexplorer.core.CoreServlet;
import com.sslexplorer.input.MultiSelectDataSource;

public class PolicyNestingDataSource implements MultiSelectDataSource {

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

    private Policy checkPolicy;

    public PolicyNestingDataSource(Policy checkPolicy) {
        super();
        this.checkPolicy = checkPolicy;
    }

    public List getValues() {
        List l = new ArrayList();
        try {
            Policy pol = null;
            boolean ok = true;
            for (Iterator i = CoreServlet.getServlet().getPolicyDatabase().getPolicies().iterator(); ok && i.hasNext();) {
                pol = (Policy) i.next();
                if (checkPolicy != null) {
                    if (pol.getResourceId() == checkPolicy.getResourceId()) {
                        ok = false;
                    } else {
                        int[] p = pol.getChildPolicies();
                        for (int j = 0; j < p.length && ok; j++) {
                            if (checkPolicy.getResourceId() == p[j]) {
                                // One of our parents
                                ok = false;
                            }
                        }
                    }
                }
                if (ok) {
                    l.add(new LabelValueBean(pol.getResourceName(), String.valueOf(pol.getResourceId())));
                }
                ok = true;
            }
        } catch (Exception e) {
            log.error("Failed to list policies.", e);
        }
        return l;
    }
}