abstractstore.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.vfs.webdav;

import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
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 com.sslexplorer.security.SessionInfo;

/**
 * @author Brett Smith <[e-mail]>
 */
public abstract class AbstractStore implements DAVStore {
    final static Log log = LogFactory.getLog(AbstractStore.class);

    private DAVRepository repository;
    private String name;
    private String charset;
    /**
     *  
     */
    public AbstractStore(String name, String charset) {
        super();
        this.name = name;
        this.charset = charset;
    }
    
    public boolean willHandle(String scheme) {
        return scheme.equals(getName());
    }
    
    public boolean isFireEvents() {
        return true;
    }

    public String getEncoding() {
        return charset;
    }    
    /*
     * (non-Javadoc)
     * 
     * @see org.betaversion.webdav.DAVStore#getName()
     */
    public String getName() {
        return name;
    }

    public void init(DAVRepository repository) {
        this.repository = repository;
    }

    public DAVRepository getRepository() {
        return repository;
    }
    
    public DAVResource getStoreResource(DAVTransaction transaction) throws DAVException {
        try {
            return new AbstractStoreResource(getName());
        } catch (URISyntaxException e) {
            throw new DAVException(DAVStatus.SC_INTERNAL_SERVER_ERROR, "Failed to create store resource.", e);
        }
    }

    public abstract DAVMount getMountFromString(String mountName, SessionInfo session) throws DAVException;

    
    class AbstractStoreResource extends AbstractDAVResource {

        public AbstractStoreResource(String name) throws URISyntaxException {
            super(new URI(name), true, name, null);
        }

        public Iterator getChildren() throws IOException, DAVAuthenticationRequiredException {
            List l = new ArrayList();
            try {
                for(Iterator i = getMountIterator(getTransaction()); i.hasNext(); ) {
                    l.add(((DAVMount)i.next()).getResource("", getTransaction()));
                }
            } catch(DAVAuthenticationRequiredException dare) {
            } catch (Exception e) {
                log.error("Failed to get store resources.", e);
            }
            return l.iterator();
        }
        
    }
}