io.undertow.protocols.alpn.OpenSSLAlpnProvider Maven / Gradle / Ivy
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* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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 io.undertow.protocols.alpn;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.security.AccessController;
import java.security.PrivilegedAction;
import javax.net.ssl.SSLEngine;
import io.undertow.UndertowLogger;
/**
* Open listener adaptor for ALPN connections that use the Wildfly OpenSSL implementation
*
*
* @author Stuart Douglas
*/
public class OpenSSLAlpnProvider implements ALPNProvider {
private static volatile OpenSSLALPNMethods openSSLALPNMethods;
private static volatile boolean initialized;
public static final String OPENSSL_ENGINE = "org.wildfly.openssl.OpenSSLEngine";
public static class OpenSSLALPNMethods {
private final Method setApplicationProtocols;
private final Method getApplicationProtocol;
OpenSSLALPNMethods(Method setApplicationProtocols, Method getApplicationProtocol) {
this.setApplicationProtocols = setApplicationProtocols;
this.getApplicationProtocol = getApplicationProtocol;
}
public Method getApplicationProtocol() {
return getApplicationProtocol;
}
public Method setApplicationProtocols() {
return setApplicationProtocols;
}
}
@Override
public boolean isEnabled(SSLEngine sslEngine) {
return sslEngine.getClass().getName().equals(OPENSSL_ENGINE) && getOpenSSLAlpnMethods() != null;
}
@Override
public SSLEngine setProtocols(SSLEngine engine, String[] protocols) {
try {
getOpenSSLAlpnMethods().setApplicationProtocols().invoke(engine, (Object) protocols);
} catch (IllegalAccessException | InvocationTargetException e) {
throw new RuntimeException(e);
}
return engine;
}
@Override
public String getSelectedProtocol(SSLEngine engine) {
try {
return (String) getOpenSSLAlpnMethods().getApplicationProtocol().invoke(engine);
} catch (IllegalAccessException | InvocationTargetException e) {
throw new RuntimeException(e);
}
}
private static OpenSSLALPNMethods getOpenSSLAlpnMethods() {
if(!initialized) {
synchronized (OpenSSLAlpnProvider.class) {
if(!initialized) {
openSSLALPNMethods = AccessController.doPrivileged(new PrivilegedAction() {
@Override
public OpenSSLALPNMethods run() {
try {
Class openSSLEngine = Class.forName(OPENSSL_ENGINE, true, OpenSSLAlpnProvider.class.getClassLoader());
Method setApplicationProtocols = openSSLEngine.getMethod("setApplicationProtocols", String[].class);
Method getApplicationProtocol = openSSLEngine.getMethod("getSelectedApplicationProtocol");
UndertowLogger.ROOT_LOGGER.debug("OpenSSL ALPN Enabled");
return new OpenSSLALPNMethods(setApplicationProtocols, getApplicationProtocol);
} catch (Throwable e) {
UndertowLogger.ROOT_LOGGER.debug("OpenSSL ALPN disabled", e);
return null;
}
}
});
initialized = true;
}
}
}
return openSSLALPNMethods;
}
@Override
public int getPriority() {
return 400;
}
@Override
public String toString() {
return "OpenSSLAlpnProvider";
}
}