addressvalidator.java

jxta_src_2.41b jxta 2.41b 最新版源码 from www.jxta.org

/*
*  Copyright (c) 2001 Sun Microsystems, Inc.  All rights
*  reserved.
*
*  Redistribution and use in source and binary forms, with or without
*  modification, are permitted provided that the following conditions
*  are met:
*
*  1. Redistributions of source code must retain the above copyright
*  notice, this list of conditions and the following disclaimer.
*
*  2. Redistributions in binary form must reproduce the above copyright
*  notice, this list of conditions and the following disclaimer in
*  the documentation and/or other materials provided with the
*  distribution.
*
*  3. The end-user documentation included with the redistribution,
*  if any, must include the following acknowledgment:
*  "This product includes software developed by the
*  Sun Microsystems, Inc. for Project JXTA."
*  Alternately, this acknowledgment may appear in the software itself,
*  if and wherever such third-party acknowledgments normally appear.
*
*  4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA"
*  must not be used to endorse or promote products derived from this
*  software without prior written permission. For written
*  permission, please contact Project JXTA at http://www.jxta.org.
*
*  5. Products derived from this software may not be called "JXTA",
*  nor may "JXTA" appear in their name, without prior written
*  permission of Sun.
*
*  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
*  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
*  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
*  DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
*  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
*  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
*  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
*  USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
*  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
*  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
*  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
*  SUCH DAMAGE.
*  ====================================================================
*
*  This software consists of voluntary contributions made by many
*  individuals on behalf of Project JXTA.  For more
*  information on Project JXTA, please see
*  <http://www.jxta.org/>.
*
*  This license is based on the BSD license adopted by the Apache Foundation.
*
*  $Id: AddressValidator.java,v 1.1 2006/06/08 04:31:11 gonzo Exp $
*/
package net.jxta.ext.config.validators;

import net.jxta.ext.config.Address;
import net.jxta.ext.config.BaseProperty;
import net.jxta.ext.config.Configurator;
import net.jxta.ext.config.MulticastAddress;
import net.jxta.ext.config.PublicAddress;
import net.jxta.ext.config.ProxyAddress;
import net.jxta.ext.config.TcpTransportAddress;
import net.jxta.ext.config.Transport;
import net.jxta.ext.config.Validator;

import java.net.URI;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

/**
 * Validate the specified transports.
 *
 * @author  james todd [gonzo at jxta dot org]
 **/

public class AddressValidator
    extends BaseProperty
    implements Validator {

    private final static int MINIMUM_PORT = 1;
    private final static int MAXIMUM_PORT = 65535;
    private final static int MINIMUM_DYNAMIC_PORT = 0;
    private final static int MAXIMUM_MULTICAST_SIZE = 1048575;
    private final static int MINIMUM_MULTICAST_SIZE = 0;
    
    /**
     * Validator:
     *
     * <ul>
     *   <li>has at least one specified transport</li>
     * </ul>
     **/

    public List validate(Configurator configurator) {
        List l = new ArrayList();
        
        for (Iterator ti = configurator.getTransports().iterator(); ti.hasNext(); ) {
            Transport t = (Transport)ti.next();
            List as = t.getAddresses();
            List ps = t.getPublicAddresses();
            
            if (t.isIncoming()) {
                if (as.isEmpty() &&
                ps.isEmpty()) {
                    l.add(new IllegalStateException("unspecified transport address"));
                }
                
                for (Iterator ai = as.iterator(); ai.hasNext(); ) {
                    Address a = (Address)ai.next();
                    URI aa = a != null ? a.getAddress() : null;
                    
                    for (Iterator pi = ps.iterator(); pi.hasNext(); ) {
                        PublicAddress p = (PublicAddress)pi.next();
                        URI pa = p != null ? p.getAddress() : null;
                        
                        if (pa != null &&
                            pa.getHost() != null &&
                            pa.getHost().length() > 0) {
                            if (aa != null &&
                                (aa.getPort() < MINIMUM_PORT ||
                                    aa.getPort() > MAXIMUM_PORT) &&
                                (pa.getPort() < MINIMUM_PORT ||
                                    pa.getPort() > MAXIMUM_PORT)) {
                                l.add(new IllegalStateException("invalid port: "
                                    + aa.getPort() + " " + pa.getPort()));
                            }
                        } else if (aa != null &&
                            (aa.getPort() < MINIMUM_DYNAMIC_PORT ||
                                aa.getPort() > MAXIMUM_PORT)) {
                            l.add(new IllegalStateException("invalid port: " +
                                aa.getPort()));
                        }
                    }
                    
                    if (a instanceof TcpTransportAddress) {
                        for (Iterator mi = ((TcpTransportAddress)a).getMulticastAddresses().iterator();
                            mi.hasNext(); ) {
                            MulticastAddress m = (MulticastAddress)mi.next();
                            URI ma = m != null ? m.getAddress() : null;
                            
                            if (ma != null &&
                                (ma.getPort() < MINIMUM_PORT ||
                                    ma.getPort() > MAXIMUM_PORT)) {
                                l.add(new IllegalStateException("invalid multicast port: " +
                                    ma.getPort()));
                            }
                            
                            if (m != null &&
                                (m.getSize() < MINIMUM_MULTICAST_SIZE ||
                                    m.getSize() > MAXIMUM_MULTICAST_SIZE)) {
                                l.add(new IllegalStateException("invalid multicast size: " +
                                    m.getSize()));
                            }
                        }
                    }
                }
                
                // xxx: this may be the wrong proxy
                ProxyAddress px = t.getProxyAddress();
                URI pxa = px != null ? px.getAddress() : null;
                
                if (pxa != null &&
                    (pxa.getPort() < MINIMUM_PORT ||
                        pxa.getPort() > MAXIMUM_PORT)) {
                    l.add(new IllegalStateException("invalid proxy port " +
                        pxa.getPort()));
                }
            } else {
                //setRelayIncoming(true);
            }
        }
        
        return l;
    }
}