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/*
* 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.io.IOException;
import java.security.KeyManagementException;
import java.security.SecureRandom;
/**
* The <i>Service Provider Interface</i> (SPI) for the {@code SSLContext} class.
*/
public abstract class SSLContextSpi {
/**
* Creates a new {@code SSLContextSpi} instance.
*/
public SSLContextSpi() {
}
/**
* Initializes this {@code SSLContext} instance. All of the arguments are
* optional, and the security providers will be searched for the required
* implementations of the needed algorithms.
*
* @param km
* the key sources or {@code null}.
* @param tm
* the trust decision sources or {@code null}.
* @param sr
* the randomness source or {@code null.}
* @throws KeyManagementException
* if initializing this instance fails.
*/
protected abstract void engineInit(KeyManager[] km, TrustManager[] tm, SecureRandom sr)
throws KeyManagementException;
/**
* Returns a socket factory for this instance.
*
* @return a socket factory for this instance.
*/
protected abstract SSLSocketFactory engineGetSocketFactory();
/**
* Returns a server socket factory for this instance.
*
* @return a server socket factory for this instance.
*/
protected abstract SSLServerSocketFactory engineGetServerSocketFactory();
/**
* Creates an {@code SSLEngine} instance from this context with the
* specified hostname and port.
*
* @param host
* the name of the host
* @param port
* the port
* @return an {@code SSLEngine} instance from this context.
* @throws UnsupportedOperationException
* if the provider does not support the operation.
*/
protected abstract SSLEngine engineCreateSSLEngine(String host, int port);
/**
* Creates an {@code SSLEngine} instance from this context.
*
* @return an {@code SSLEngine} instance from this context.
* @throws UnsupportedOperationException
* if the provider does not support the operation.
*/
protected abstract SSLEngine engineCreateSSLEngine();
/**
* Returns the SSL session context that encapsulates the set of SSL sessions
* that can be used for the server side of the SSL handshake.
*
* @return the SSL server session context for this context or {@code null}
* if the underlying provider does not provide an implementation of
* the {@code SSLSessionContext} interface.
*/
protected abstract SSLSessionContext engineGetServerSessionContext();
/**
* Returns the SSL session context that encapsulates the set of SSL sessions
* that can be used for the client side of the SSL handshake.
*
* @return the SSL client session context for this context or {@code null}
* if the underlying provider does not provide an implementation of
* the {@code SSLSessionContext} interface.
*/
protected abstract SSLSessionContext engineGetClientSessionContext();
/**
* Returns a new SSLParameters instance that includes the default
* SSL handshake parameters values including cipher suites,
* protocols, and client authentication.
*
* <p>The default implementation returns an SSLParameters with values
* based an SSLSocket created from this instances SocketFactory.
*
* @since 1.6
*/
protected javax.net.ssl.SSLParameters engineGetDefaultSSLParameters() {
return createSSLParameters(false);
}
/**
* Returns a new SSLParameters instance that includes all
* supported cipher suites and protocols.
*
* <p>The default implementation returns an SSLParameters with values
* based an SSLSocket created from this instances SocketFactory.
*
* @since 1.6
*/
protected javax.net.ssl.SSLParameters engineGetSupportedSSLParameters() {
return createSSLParameters(true);
}
private javax.net.ssl.SSLParameters createSSLParameters(boolean supported) {
try {
SSLSocket s = (SSLSocket) engineGetSocketFactory().createSocket();
javax.net.ssl.SSLParameters p = new javax.net.ssl.SSLParameters();
String[] cipherSuites;
String[] protocols;
if (supported) {
cipherSuites = s.getSupportedCipherSuites();
protocols = s.getSupportedProtocols();
} else {
cipherSuites = s.getEnabledCipherSuites();
protocols = s.getEnabledProtocols();
}
p.setCipherSuites(cipherSuites);
p.setProtocols(protocols);
p.setNeedClientAuth(s.getNeedClientAuth());
p.setWantClientAuth(s.getWantClientAuth());
return p;
} catch (IOException e) {
/*
* SSLContext.getDefaultSSLParameters specifies to throw
* UnsupportedOperationException if there is a problem getting the
* parameters
*/
throw new UnsupportedOperationException("Could not access supported SSL parameters");
}
}
}
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