sslsocketfactory.java

利用mina框架写的一个通信实例。初学者的一个好教程。

/*
 *   @(#) $Id: SSLSocketFactory.java 357871 2005-12-20 01:56:40Z trustin $
 *
 *   Copyright 2004 The Apache Software Foundation
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 *
 */
package org.apache.mina.examples.echoserver.ssl;

import java.io.IOException;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
import java.security.GeneralSecurityException;

import javax.net.SocketFactory;

/**
 * Simple Socket factory to create sockets with or without SSL enabled. If SSL
 * enabled a "bougus" SSL Context is used (suitable for test purposes)
 * 
 * @version $Rev: 357871 $, $Date: 2005-12-20 10:56:40 +0900 (Tue, 20 Dec 2005) $
 */
public class SSLSocketFactory extends SocketFactory {
	private static boolean sslEnabled = false;

	private static javax.net.ssl.SSLSocketFactory sslFactory = null;

	private static javax.net.SocketFactory factory = null;

	public SSLSocketFactory() {
		super();
	}

	public Socket createSocket(String arg1, int arg2) throws IOException,
			UnknownHostException {
		if (isSslEnabled()) {
			return getSSLFactory().createSocket(arg1, arg2);
		} else {
			return new Socket(arg1, arg2);
		}
	}

	public Socket createSocket(String arg1, int arg2, InetAddress arg3, int arg4)
			throws IOException, UnknownHostException {
		if (isSslEnabled()) {
			return getSSLFactory().createSocket(arg1, arg2, arg3, arg4);
		} else {
			return new Socket(arg1, arg2, arg3, arg4);
		}
	}

	public Socket createSocket(InetAddress arg1, int arg2) throws IOException {
		if (isSslEnabled()) {
			return getSSLFactory().createSocket(arg1, arg2);
		} else {
			return new Socket(arg1, arg2);
		}
	}

	public Socket createSocket(InetAddress arg1, int arg2, InetAddress arg3,
			int arg4) throws IOException {
		if (isSslEnabled()) {
			return getSSLFactory().createSocket(arg1, arg2, arg3, arg4);
		} else {
			return new Socket(arg1, arg2, arg3, arg4);
		}
	}

	public static javax.net.SocketFactory getSocketFactory() {
		if (factory == null) {
			factory = new SSLSocketFactory();
		}
		return factory;
	}

	private javax.net.ssl.SSLSocketFactory getSSLFactory() {
		if (sslFactory == null) {
			try {
				sslFactory = BogusSSLContextFactory.getInstance(false)
						.getSocketFactory();
			} catch (GeneralSecurityException e) {
				throw new RuntimeException("could not create SSL socket", e);
			}
		}
		return sslFactory;
	}

	public static boolean isSslEnabled() {
		return sslEnabled;
	}

	public static void setSslEnabled(boolean newSslEnabled) {
		sslEnabled = newSslEnabled;
	}

}