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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).

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/*
 * Copyright 2014 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.ReferenceCounted;
import io.netty.util.internal.UnstableApi;

import java.security.Provider;

/**
 * An enumeration of SSL/TLS protocol providers.
 */
public enum SslProvider {
    /**
     * JDK's default implementation.
     */
    JDK,
    /**
     * OpenSSL-based implementation.
     */
    OPENSSL,
    /**
     * OpenSSL-based implementation which does not have finalizers and instead implements {@link ReferenceCounted}.
     */
    @UnstableApi
    OPENSSL_REFCNT;

    /**
     * Returns {@code true} if the specified {@link SslProvider} supports
     * TLS ALPN Extension, {@code false} otherwise.
     */
    @SuppressWarnings("deprecation")
    public static boolean isAlpnSupported(final SslProvider provider) {
        switch (provider) {
            case JDK:
                return JdkAlpnApplicationProtocolNegotiator.isAlpnSupported();
            case OPENSSL:
            case OPENSSL_REFCNT:
                return OpenSsl.isAlpnSupported();
            default:
                throw new Error("Unknown SslProvider: " + provider);
        }
    }

    /**
     * Returns {@code true} if the specified {@link SslProvider} supports
     * TLS 1.3, {@code false} otherwise.
     */
    public static boolean isTlsv13Supported(final SslProvider sslProvider) {
        return isTlsv13Supported(sslProvider, null);
    }

    /**
     * Returns {@code true} if the specified {@link SslProvider} supports
     * TLS 1.3, {@code false} otherwise.
     */
    public static boolean isTlsv13Supported(final SslProvider sslProvider, Provider provider) {
        switch (sslProvider) {
            case JDK:
                return SslUtils.isTLSv13SupportedByJDK(provider);
            case OPENSSL:
            case OPENSSL_REFCNT:
                return OpenSsl.isTlsv13Supported();
            default:
                throw new Error("Unknown SslProvider: " + sslProvider);
        }
    }

    /**
     * Returns {@code true} if the specified {@link SslProvider} enables
     * TLS 1.3 by default, {@code false} otherwise.
     */
    static boolean isTlsv13EnabledByDefault(final SslProvider sslProvider, Provider provider) {
        switch (sslProvider) {
            case JDK:
                return SslUtils.isTLSv13EnabledByJDK(provider);
            case OPENSSL:
            case OPENSSL_REFCNT:
                return OpenSsl.isTlsv13Supported();
            default:
                throw new Error("Unknown SslProvider: " + sslProvider);
        }
    }
}