io.netty.handler.ssl.Conscrypt Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of wildfly-client-all

This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

The newest version!

/*
 * Copyright 2017 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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.netty.handler.ssl;

import io.netty.util.internal.PlatformDependent;

import javax.net.ssl.SSLEngine;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

/**
 * Contains methods that can be used to detect if conscrypt is usable.
 */
final class Conscrypt {
    // This class exists to avoid loading other conscrypt related classes using features only available in JDK8+,
    // because we need to maintain JDK6+ runtime compatibility.
    private static final Method IS_CONSCRYPT_SSLENGINE;

    static {
        Method isConscryptSSLEngine = null;

        if ((PlatformDependent.javaVersion() >= 8 &&
                // Only works on Java14 and earlier for now
                // See https://github.com/google/conscrypt/issues/838
                PlatformDependent.javaVersion() < 15) || PlatformDependent.isAndroid()) {
            try {
                Class providerClass = Class.forName("org.conscrypt.OpenSSLProvider", true,
                        PlatformDependent.getClassLoader(ConscryptAlpnSslEngine.class));
                providerClass.newInstance();

                Class conscryptClass = Class.forName("org.conscrypt.Conscrypt", true,
                        PlatformDependent.getClassLoader(ConscryptAlpnSslEngine.class));
                isConscryptSSLEngine = conscryptClass.getMethod("isConscrypt", SSLEngine.class);
            } catch (Throwable ignore) {
                // ignore
            }
        }
        IS_CONSCRYPT_SSLENGINE = isConscryptSSLEngine;
    }

    /**
     * Indicates whether or not conscrypt is available on the current system.
     */
    static boolean isAvailable() {
        return IS_CONSCRYPT_SSLENGINE != null;
    }

    /**
     * Returns {@code true} if the passed in {@link SSLEngine} is handled by Conscrypt, {@code false} otherwise.
     */
    static boolean isEngineSupported(SSLEngine engine) {
        try {
            return IS_CONSCRYPT_SSLENGINE != null && (Boolean) IS_CONSCRYPT_SSLENGINE.invoke(null, engine);
        } catch (IllegalAccessException ignore) {
            return false;
        } catch (InvocationTargetException ex) {
            throw new RuntimeException(ex);
        }
    }

    private Conscrypt() { }
}