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Tomcat example source code file (SSLImplementation.java)

This example Tomcat source code file (SSLImplementation.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Tomcat tags/keywords

classnotfoundexception, classnotfoundexception, error, exception, implementation, jsseimplementationclass, net, network, puretlsimplementationclass, ssl, ssl, sslimplementation, sslimplementation, sslsupport, string, string

The Tomcat SSLImplementation.java source code

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You 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.tomcat.util.net;

import java.net.Socket;
import javax.net.ssl.SSLSession;

/* SSLImplementation:

   Abstract factory and base class for all SSL implementations.

   @author EKR
*/
abstract public class SSLImplementation {
    private static org.apache.juli.logging.Log logger =
        org.apache.juli.logging.LogFactory.getLog(SSLImplementation.class);

    // The default implementations in our search path
    private static final String PureTLSImplementationClass=
	"org.apache.tomcat.util.net.puretls.PureTLSImplementation";
    private static final String JSSEImplementationClass=
	"org.apache.tomcat.util.net.jsse.JSSEImplementation";
    
    private static final String[] implementations=
    {
        PureTLSImplementationClass,
        JSSEImplementationClass
    };

    public static SSLImplementation getInstance() throws ClassNotFoundException
    {
	for(int i=0;i<implementations.length;i++){
	    try {
               SSLImplementation impl=
		    getInstance(implementations[i]);
		return impl;
	    } catch (Exception e) {
		if(logger.isTraceEnabled()) 
		    logger.trace("Error creating " + implementations[i],e);
	    }
	}

	// If we can't instantiate any of these
	throw new ClassNotFoundException("Can't find any SSL implementation");
    }

    public static SSLImplementation getInstance(String className)
	throws ClassNotFoundException
    {
	if(className==null) return getInstance();

	try {
	    // Workaround for the J2SE 1.4.x classloading problem (under Solaris).
	    // Class.forName(..) fails without creating class using new.
	    // This is an ugly workaround. 
	    if( JSSEImplementationClass.equals(className) ) {
		return new org.apache.tomcat.util.net.jsse.JSSEImplementation();
	    }
	    Class clazz=Class.forName(className);
	    return (SSLImplementation)clazz.newInstance();
	} catch (Exception e){
	    if(logger.isDebugEnabled())
		logger.debug("Error loading SSL Implementation "
			     +className, e);
	    throw new ClassNotFoundException("Error loading SSL Implementation "
				      +className+ " :" +e.toString());
	}
    }

    abstract public String getImplementationName();
    abstract public ServerSocketFactory getServerSocketFactory();
    abstract public SSLSupport getSSLSupport(Socket sock);
    abstract public SSLSupport getSSLSupport(SSLSession session);
}    

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