| /* |
| * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.security.ssl; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import sun.security.ssl.SSLHandshake.HandshakeMessage; |
| |
| /** |
| * Pack of the HelloRequest handshake message. |
| */ |
| final class HelloRequest { |
| static final SSLProducer kickstartProducer = |
| new HelloRequestKickstartProducer(); |
| |
| static final SSLConsumer handshakeConsumer = |
| new HelloRequestConsumer(); |
| static final HandshakeProducer handshakeProducer = |
| new HelloRequestProducer(); |
| |
| /** |
| * The HelloRequest handshake message. |
| * |
| * [RFC 5246] The HelloRequest message MAY be sent by the server at any |
| * time. HelloRequest is a simple notification that the client should |
| * begin the negotiation process anew. |
| * |
| * struct { } HelloRequest; |
| */ |
| static final class HelloRequestMessage extends HandshakeMessage { |
| HelloRequestMessage(HandshakeContext handshakeContext) { |
| super(handshakeContext); |
| } |
| |
| HelloRequestMessage(HandshakeContext handshakeContext, |
| ByteBuffer m) throws IOException { |
| super(handshakeContext); |
| if (m.hasRemaining()) { |
| throw handshakeContext.conContext.fatal(Alert.ILLEGAL_PARAMETER, |
| "Error parsing HelloRequest message: not empty"); |
| } |
| } |
| |
| @Override |
| public SSLHandshake handshakeType() { |
| return SSLHandshake.HELLO_REQUEST; |
| } |
| |
| @Override |
| public int messageLength() { |
| return 0; |
| } |
| |
| @Override |
| public void send(HandshakeOutStream s) throws IOException { |
| // empty, nothing to send |
| } |
| |
| @Override |
| public String toString() { |
| return "<empty>"; |
| } |
| } |
| |
| /** |
| * The "HelloRequest" handshake message kick start producer. |
| */ |
| private static final |
| class HelloRequestKickstartProducer implements SSLProducer { |
| // Prevent instantiation of this class. |
| private HelloRequestKickstartProducer() { |
| // blank |
| } |
| |
| @Override |
| public byte[] produce(ConnectionContext context) throws IOException { |
| // The producing happens in server side only. |
| ServerHandshakeContext shc = (ServerHandshakeContext)context; |
| |
| HelloRequestMessage hrm = new HelloRequestMessage(shc); |
| if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
| SSLLogger.fine("Produced HelloRequest handshake message", hrm); |
| } |
| |
| // Output the handshake message. |
| hrm.write(shc.handshakeOutput); |
| shc.handshakeOutput.flush(); |
| |
| // update the context |
| |
| // What's the expected response? |
| shc.handshakeConsumers.put( |
| SSLHandshake.CLIENT_HELLO.id, SSLHandshake.CLIENT_HELLO); |
| |
| // The handshake message has been delivered. |
| return null; |
| } |
| } |
| |
| /** |
| * The "HelloRequest" handshake message producer. |
| */ |
| private static final class HelloRequestProducer |
| implements HandshakeProducer { |
| // Prevent instantiation of this class. |
| private HelloRequestProducer() { |
| // blank |
| } |
| |
| @Override |
| public byte[] produce(ConnectionContext context, |
| HandshakeMessage message) throws IOException { |
| // The producing happens in server side only. |
| ServerHandshakeContext shc = (ServerHandshakeContext)context; |
| |
| HelloRequestMessage hrm = new HelloRequestMessage(shc); |
| if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
| SSLLogger.fine("Produced HelloRequest handshake message", hrm); |
| } |
| |
| // Output the handshake message. |
| hrm.write(shc.handshakeOutput); |
| shc.handshakeOutput.flush(); |
| |
| // update the context |
| |
| // What's the expected response? |
| shc.handshakeConsumers.put( |
| SSLHandshake.CLIENT_HELLO.id, SSLHandshake.CLIENT_HELLO); |
| |
| // The handshake message has been delivered. |
| return null; |
| } |
| } |
| |
| /** |
| * The "HelloRequest" handshake message consumer. |
| */ |
| private static final class HelloRequestConsumer |
| implements SSLConsumer { |
| |
| // Prevent instantiation of this class. |
| private HelloRequestConsumer() { |
| // blank |
| } |
| |
| @Override |
| public void consume(ConnectionContext context, |
| ByteBuffer message) throws IOException { |
| // The consuming happens in client side only. |
| ClientHandshakeContext chc = (ClientHandshakeContext)context; |
| |
| // For TLS 1.2 and prior versions, the HelloRequest message MAY |
| // be sent by the server at any time. Please don't clean up this |
| // handshake consumer. |
| HelloRequestMessage hrm = new HelloRequestMessage(chc, message); |
| if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
| SSLLogger.fine( |
| "Consuming HelloRequest handshake message", hrm); |
| } |
| |
| if (!chc.kickstartMessageDelivered) { |
| if (!chc.conContext.secureRenegotiation && |
| !HandshakeContext.allowUnsafeRenegotiation) { |
| throw chc.conContext.fatal(Alert.HANDSHAKE_FAILURE, |
| "Unsafe renegotiation is not allowed"); |
| } |
| |
| if (!chc.conContext.secureRenegotiation) { |
| if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
| SSLLogger.warning( |
| "Continue with insecure renegotiation"); |
| } |
| } |
| |
| // update the responders |
| chc.handshakeProducers.put( |
| SSLHandshake.CLIENT_HELLO.id, |
| SSLHandshake.CLIENT_HELLO); |
| |
| // |
| // produce response handshake message |
| // |
| SSLHandshake.CLIENT_HELLO.produce(context, hrm); |
| } else { |
| if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
| SSLLogger.fine( |
| "Ingore HelloRequest, handshaking is in progress"); |
| } |
| } |
| } |
| } |
| } |
| |