| /* |
| * ==================================================================== |
| * 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. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| */ |
| |
| package org.apache.hc.core5.http2.ssl; |
| |
| import javax.net.ssl.SSLParameters; |
| |
| import org.apache.hc.core5.http.ssl.TLS; |
| import org.apache.hc.core5.http.ssl.TlsCiphers; |
| import org.apache.hc.core5.http2.HttpVersionPolicy; |
| import org.apache.hc.core5.reactor.ssl.SSLSessionInitializer; |
| import org.apache.hc.core5.util.ReflectionUtils; |
| |
| /** |
| * HTTP/2 TLS support methods |
| * |
| * @since 5.0 |
| */ |
| public final class H2TlsSupport { |
| |
| public static void setEnableRetransmissions(final SSLParameters sslParameters, final boolean value) { |
| ReflectionUtils.callSetter(sslParameters, "EnableRetransmissions", Boolean.TYPE, value); |
| } |
| |
| public static void setApplicationProtocols(final SSLParameters sslParameters, final String[] values) { |
| ReflectionUtils.callSetter(sslParameters, "ApplicationProtocols", String[].class, values); |
| } |
| |
| public static String[] selectApplicationProtocols(final Object attachment) { |
| final HttpVersionPolicy versionPolicy = attachment instanceof HttpVersionPolicy ? |
| (HttpVersionPolicy) attachment : HttpVersionPolicy.NEGOTIATE; |
| switch (versionPolicy) { |
| case FORCE_HTTP_1: |
| return new String[] { ApplicationProtocol.HTTP_1_1.id }; |
| case FORCE_HTTP_2: |
| return new String[] { ApplicationProtocol.HTTP_2.id }; |
| default: |
| return new String[] { ApplicationProtocol.HTTP_2.id, ApplicationProtocol.HTTP_1_1.id }; |
| } |
| } |
| |
| public static SSLSessionInitializer enforceRequirements( |
| final Object attachment, |
| final SSLSessionInitializer initializer) { |
| return (endpoint, sslEngine) -> { |
| final SSLParameters sslParameters = sslEngine.getSSLParameters(); |
| sslParameters.setProtocols(TLS.excludeWeak(sslParameters.getProtocols())); |
| sslParameters.setCipherSuites(TlsCiphers.excludeH2Blacklisted(sslParameters.getCipherSuites())); |
| setEnableRetransmissions(sslParameters, false); |
| setApplicationProtocols(sslParameters, selectApplicationProtocols(attachment)); |
| sslEngine.setSSLParameters(sslParameters); |
| if (initializer != null) { |
| initializer.initialize(endpoint, sslEngine); |
| } |
| }; |
| } |
| |
| } |