249 lines
9.3 KiB
Java
249 lines
9.3 KiB
Java
/*
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* Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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// SunJSSE does not support dynamic system properties, no way to re-use
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// system properties in samevm/agentvm mode.
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/*
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* @test
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* @bug 8331682
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* @summary Slow networks/Impatient clients can potentially send
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* unencrypted TLSv1.3 alerts that won't parse on the server.
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* @library /javax/net/ssl/templates /test/lib
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* @run main/othervm SSLEngineNoServerHelloClientShutdown
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*/
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import static jdk.test.lib.Asserts.assertEquals;
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import static jdk.test.lib.Asserts.fail;
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import static jdk.test.lib.security.SecurityUtils.inspectTlsBuffer;
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import java.nio.ByteBuffer;
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import java.security.GeneralSecurityException;
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import javax.net.ssl.SSLEngine;
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import javax.net.ssl.SSLEngineResult;
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import javax.net.ssl.SSLEngineResult.HandshakeStatus;
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import javax.net.ssl.SSLProtocolException;
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import javax.net.ssl.SSLSession;
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/**
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* A SSLEngine usage example which simplifies the presentation
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* by removing the I/O and multi-threading concerns.
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* <p>
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* The test creates two SSLEngines, simulating a client and server.
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* The "transport" layer consists two byte buffers: think of them
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* as directly connected pipes.
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* <p>
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* When this application runs, notice that several messages
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* (wrap/unwrap) pass before any application data is consumed or
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* produced.
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*/
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public class SSLEngineNoServerHelloClientShutdown extends SSLContextTemplate {
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protected static final String EXCEPTION_MSG =
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"Unexpected plaintext alert received: " +
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"Level: warning; Alert: user_canceled";
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protected SSLEngine clientEngine; // client Engine
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protected ByteBuffer clientOut; // write side of clientEngine
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protected final ByteBuffer clientIn; // read side of clientEngine
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protected final SSLEngine serverEngine; // server Engine
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protected final ByteBuffer serverOut; // write side of serverEngine
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protected final ByteBuffer serverIn; // read side of serverEngine
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protected ByteBuffer cTOs; // "reliable" transport client->server
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protected final ByteBuffer sTOc; // "reliable" transport server->client
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protected SSLEngineNoServerHelloClientShutdown() throws Exception {
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serverEngine = configureServerEngine(
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createServerSSLContext().createSSLEngine());
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clientEngine = configureClientEngine(
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createClientSSLContext().createSSLEngine());
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// We'll assume the buffer sizes are the same between client and server.
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SSLSession session = clientEngine.getSession();
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int appBufferMax = session.getApplicationBufferSize();
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int netBufferMax = session.getPacketBufferSize();
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// We'll make the input buffers a bit bigger than the max needed
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// size, so that unwrap()s following a successful data transfer
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// won't generate BUFFER_OVERFLOWS.
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clientIn = ByteBuffer.allocate(appBufferMax + 50);
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serverIn = ByteBuffer.allocate(appBufferMax + 50);
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cTOs = ByteBuffer.allocateDirect(netBufferMax * 2);
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// Make it larger so subsequent server wraps won't generate
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// BUFFER_OVERFLOWS
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sTOc = ByteBuffer.allocateDirect(netBufferMax * 2);
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clientOut = createClientOutputBuffer();
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serverOut = createServerOutputBuffer();
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}
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protected ByteBuffer createServerOutputBuffer() {
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return ByteBuffer.wrap("Hello Client, I'm Server".getBytes());
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}
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protected ByteBuffer createClientOutputBuffer() {
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return ByteBuffer.wrap("Hi Server, I'm Client".getBytes());
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}
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/*
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* Configure the client side engine.
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*/
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protected SSLEngine configureClientEngine(SSLEngine clientEngine) {
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clientEngine.setUseClientMode(true);
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clientEngine.setEnabledProtocols(new String[] {"TLSv1.3"});
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return clientEngine;
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}
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/*
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* Configure the server side engine.
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*/
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protected SSLEngine configureServerEngine(SSLEngine serverEngine) {
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serverEngine.setUseClientMode(false);
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serverEngine.setNeedClientAuth(true);
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return serverEngine;
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}
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public static void main(String[] args) throws Exception {
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new SSLEngineNoServerHelloClientShutdown().runTestUserCancelled();
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}
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//
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// Private methods that used to build the common part of the test.
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//
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private void runTestUserCancelled() throws Exception {
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SSLEngineResult clientResult;
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SSLEngineResult serverResult;
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log("=================");
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// Client: produce client_hello
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log("---Client Wrap client_hello---");
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clientResult = clientEngine.wrap(clientOut, cTOs);
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logEngineStatus(clientEngine, clientResult);
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runDelegatedTasks(clientEngine);
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cTOs.flip();
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// Server: consume client_hello
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log("---Server Unwrap client_hello---");
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serverResult = serverEngine.unwrap(cTOs, serverIn);
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logEngineStatus(serverEngine, serverResult);
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runDelegatedTasks(serverEngine);
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cTOs.compact();
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// Server: produce server_hello
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log("---Server Wrap server_hello---");
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serverResult = serverEngine.wrap(serverOut, sTOc);
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logEngineStatus(serverEngine, serverResult);
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runDelegatedTasks(serverEngine);
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// SH packet went missing. Timeout on Client.
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// Server: produce other outbound messages
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log("---Server Wrap---");
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serverResult = serverEngine.wrap(serverOut, sTOc);
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logEngineStatus(serverEngine, serverResult);
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runDelegatedTasks(serverEngine);
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// CCS packet went missing. Timeout on Client.
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// Server: produce other outbound messages
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log("---Server Wrap---");
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serverResult = serverEngine.wrap(serverOut, sTOc);
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logEngineStatus(serverEngine, serverResult);
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runDelegatedTasks(serverEngine);
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// EE/etc. packet went missing. Timeout on Client.
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// Shutdown client
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log("---Client closeOutbound---");
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clientEngine.closeOutbound();
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// Client: produce an unencrypted user_canceled
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log("---Client Wrap user_canceled---");
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clientResult = clientEngine.wrap(clientOut, cTOs);
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logEngineStatus(clientEngine, clientResult);
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runDelegatedTasks(clientEngine);
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cTOs.flip();
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inspectTlsBuffer(cTOs);
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// Server unwrap should throw a proper exception when receiving an
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// unencrypted 2 byte packet user_canceled alert.
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log("---Server Unwrap user_canceled alert---");
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try {
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serverEngine.unwrap(cTOs, serverIn);
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} catch (SSLProtocolException e) {
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assertEquals(
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GeneralSecurityException.class, e.getCause().getClass());
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assertEquals(EXCEPTION_MSG, e.getCause().getMessage());
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return;
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}
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fail("Server should have thrown SSLProtocolException");
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}
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protected static void logEngineStatus(SSLEngine engine) {
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log("\tCurrent HS State: " + engine.getHandshakeStatus());
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log("\tisInboundDone() : " + engine.isInboundDone());
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log("\tisOutboundDone(): " + engine.isOutboundDone());
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}
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protected static void logEngineStatus(
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SSLEngine engine, SSLEngineResult result) {
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log("\tResult Status : " + result.getStatus());
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log("\tResult HS Status : " + result.getHandshakeStatus());
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log("\tEngine HS Status : " + engine.getHandshakeStatus());
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log("\tisInboundDone() : " + engine.isInboundDone());
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log("\tisOutboundDone() : " + engine.isOutboundDone());
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log("\tMore Result : " + result);
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}
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protected static void log(String message) {
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System.err.println(message);
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}
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// If the result indicates that we have outstanding tasks to do,
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// go ahead and run them in this thread.
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protected static void runDelegatedTasks(SSLEngine engine)
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throws Exception {
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if (engine.getHandshakeStatus() == HandshakeStatus.NEED_TASK) {
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Runnable runnable;
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while ((runnable = engine.getDelegatedTask()) != null) {
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log(" running delegated task...");
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runnable.run();
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}
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HandshakeStatus hsStatus = engine.getHandshakeStatus();
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if (hsStatus == HandshakeStatus.NEED_TASK) {
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throw new Exception(
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"handshake shouldn't need additional tasks");
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}
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logEngineStatus(engine);
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}
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}
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}
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