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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 org.apache.tomcat.util.net.openssl;
import java.util.Enumeration;
import java.util.NoSuchElementException;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSessionContext;
import org.apache.tomcat.jni.SSL;
import org.apache.tomcat.jni.SSLContext;
import org.apache.tomcat.util.res.StringManager;
/**
* OpenSSL specific {@link SSLSessionContext} implementation.
*/
public class OpenSSLSessionContext implements SSLSessionContext {
private static final StringManager sm = StringManager.getManager(OpenSSLSessionContext.class);
private static final Enumeration<byte[]> EMPTY = new EmptyEnumeration();
private final OpenSSLSessionStats stats;
// This is deliberately unused. The reference is retained so that a
// reference chain is established and maintained to the OpenSSLContext while
// there is a connection that is using the OpenSSLContext. Therefore, the
// OpenSSLContext can not be eligible for GC while it is in use.
@SuppressWarnings("unused")
private final OpenSSLContext context;
private final long contextID;
OpenSSLSessionContext(OpenSSLContext context) {
this.context = context;
this.contextID = context.getSSLContextID();
stats = new OpenSSLSessionStats(contextID);
}
@Override
public SSLSession getSession(byte[] bytes) {
return null;
}
@Override
public Enumeration<byte[]> getIds() {
return EMPTY;
}
/**
* Sets the SSL session ticket keys of this context.
*
* @param keys The session ticket keys
*/
public void setTicketKeys(byte[] keys) {
if (keys == null) {
throw new IllegalArgumentException(sm.getString("sessionContext.nullTicketKeys"));
}
SSLContext.setSessionTicketKeys(contextID, keys);
}
/**
* Enable or disable caching of SSL sessions.
*
* @param enabled {@code true} to enable caching, {@code false} to disable
*/
public void setSessionCacheEnabled(boolean enabled) {
long mode = enabled ? SSL.SSL_SESS_CACHE_SERVER : SSL.SSL_SESS_CACHE_OFF;
SSLContext.setSessionCacheMode(contextID, mode);
}
/**
* @return {@code true} if caching of SSL sessions is enabled, {@code false}
* otherwise.
*/
public boolean isSessionCacheEnabled() {
return SSLContext.getSessionCacheMode(contextID) == SSL.SSL_SESS_CACHE_SERVER;
}
/**
* @return The statistics for this context.
*/
public OpenSSLSessionStats stats() {
return stats;
}
@Override
public void setSessionTimeout(int seconds) {
if (seconds < 0) {
throw new IllegalArgumentException();
}
SSLContext.setSessionCacheTimeout(contextID, seconds);
}
@Override
public int getSessionTimeout() {
return (int) SSLContext.getSessionCacheTimeout(contextID);
}
@Override
public void setSessionCacheSize(int size) {
if (size < 0) {
throw new IllegalArgumentException();
}
SSLContext.setSessionCacheSize(contextID, size);
}
@Override
public int getSessionCacheSize() {
return (int) SSLContext.getSessionCacheSize(contextID);
}
/**
* Set the context within which session be reused (server side only)
* See <a href="http://www.openssl.org/docs/ssl/SSL_CTX_set_session_id_context.html">
* man SSL_CTX_set_session_id_context</a>
*
* @param sidCtx can be any kind of binary data, it is therefore possible to use e.g. the name
* of the application and/or the hostname and/or service name
* @return {@code true} if success, {@code false} otherwise.
*/
public boolean setSessionIdContext(byte[] sidCtx) {
return SSLContext.setSessionIdContext(contextID, sidCtx);
}
private static final class EmptyEnumeration implements Enumeration<byte[]> {
@Override
public boolean hasMoreElements() {
return false;
}
@Override
public byte[] nextElement() {
throw new NoSuchElementException();
}
}
}
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