javax.net.ssl.SSLServerSocketFactory Maven / Gradle / Ivy
/*
* 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 javax.net.ssl;
import java.security.NoSuchAlgorithmException;
import java.security.Security;
import javax.net.ServerSocketFactory;
/**
* The factory for SSL server sockets.
*/
public abstract class SSLServerSocketFactory extends ServerSocketFactory {
// TODO EXPORT CONTROL
// The default SSL socket factory
private static ServerSocketFactory defaultServerSocketFactory;
private static String defaultName;
/**
* Returns the default {@code SSLServerSocketFactory} instance. The default
* implementation is defined by the security property
* "ssl.ServerSocketFactory.provider".
*
* @return the default {@code SSLServerSocketFactory} instance.
*/
public static synchronized ServerSocketFactory getDefault() {
if (defaultServerSocketFactory != null) {
return defaultServerSocketFactory;
}
if (defaultName == null) {
defaultName = Security.getProperty("ssl.ServerSocketFactory.provider");
if (defaultName != null) {
ClassLoader cl = Thread.currentThread().getContextClassLoader();
if (cl == null) {
cl = ClassLoader.getSystemClassLoader();
}
try {
final Class ssfc = Class.forName(defaultName, true, cl);
defaultServerSocketFactory = (ServerSocketFactory) ssfc.newInstance();
} catch (Exception e) {
}
}
}
if (defaultServerSocketFactory == null) {
SSLContext context;
try {
context = SSLContext.getDefault();
} catch (NoSuchAlgorithmException e) {
context = null;
}
if (context != null) {
defaultServerSocketFactory = context.getServerSocketFactory();
}
}
if (defaultServerSocketFactory == null) {
// Use internal dummy implementation
defaultServerSocketFactory = new DefaultSSLServerSocketFactory(
"No ServerSocketFactory installed");
}
return defaultServerSocketFactory;
}
/**
* Creates a new {@code SSLServerSocketFactory} instance.
*/
protected SSLServerSocketFactory() {
}
/**
* Returns the names of the cipher suites that are enabled by default.
*
* @return the names of the cipher suites that are enabled by default
*/
public abstract String[] getDefaultCipherSuites();
/**
* Returns the list of supported cipher suites that could be enabled for an
* SSL connection created by this factory.
*
* @return the list of supported cipher suites
*/
public abstract String[] getSupportedCipherSuites();
}