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/*
* Copyright (c) 2003, 2016, 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.
*
* 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.
*/
// SunJSSE does not support dynamic system properties, no way to re-use
// system properties in samevm/agentvm mode.
/*
* @test
* @bug 8051498 8145849 8170282
* @summary JEP 244: TLS Application-Layer Protocol Negotiation Extension
* @compile MyX509ExtendedKeyManager.java
*
* @run main/othervm SSLEngineAlpnTest h2 UNUSED h2 h2
* @run main/othervm SSLEngineAlpnTest h2 UNUSED h2,http/1.1 h2
* @run main/othervm SSLEngineAlpnTest h2,http/1.1 UNUSED h2,http/1.1 h2
* @run main/othervm SSLEngineAlpnTest http/1.1,h2 UNUSED h2,http/1.1 http/1.1
* @run main/othervm SSLEngineAlpnTest h4,h3,h2 UNUSED h1,h2 h2
* @run main/othervm SSLEngineAlpnTest EMPTY UNUSED h2,http/1.1 NONE
* @run main/othervm SSLEngineAlpnTest h2 UNUSED EMPTY NONE
* @run main/othervm SSLEngineAlpnTest H2 UNUSED h2 ERROR
* @run main/othervm SSLEngineAlpnTest h2 UNUSED http/1.1 ERROR
*
* @run main/othervm SSLEngineAlpnTest UNUSED h2 h2 h2
* @run main/othervm SSLEngineAlpnTest UNUSED h2 h2,http/1.1 h2
* @run main/othervm SSLEngineAlpnTest UNUSED h2 http/1.1,h2 h2
* @run main/othervm SSLEngineAlpnTest UNUSED http/1.1 h2,http/1.1 http/1.1
* @run main/othervm SSLEngineAlpnTest UNUSED EMPTY h2,http/1.1 NONE
* @run main/othervm SSLEngineAlpnTest UNUSED h2 EMPTY NONE
* @run main/othervm SSLEngineAlpnTest UNUSED H2 h2 ERROR
* @run main/othervm SSLEngineAlpnTest UNUSED h2 http/1.1 ERROR
*
* @run main/othervm SSLEngineAlpnTest h2 h2 h2 h2
* @run main/othervm SSLEngineAlpnTest H2 h2 h2,http/1.1 h2
* @run main/othervm SSLEngineAlpnTest h2,http/1.1 http/1.1 h2,http/1.1 http/1.1
* @run main/othervm SSLEngineAlpnTest http/1.1,h2 h2 h2,http/1.1 h2
* @run main/othervm SSLEngineAlpnTest EMPTY h2 h2 h2
* @run main/othervm SSLEngineAlpnTest h2,http/1.1 EMPTY http/1.1 NONE
* @run main/othervm SSLEngineAlpnTest h2,http/1.1 h2 EMPTY NONE
* @run main/othervm SSLEngineAlpnTest UNUSED UNUSED http/1.1,h2 NONE
* @run main/othervm SSLEngineAlpnTest h2 h2 http/1.1 ERROR
* @run main/othervm SSLEngineAlpnTest h2,http/1.1 H2 http/1.1 ERROR
*/
/**
* A simple SSLEngine-based client/server that demonstrates the proposed API
* changes for JEP 244 in support of the TLS ALPN extension (RFC 7301).
*
* Usage:
* java SSLEngineAlpnTest <server-APs> <callback-AP> <client-APs> <result>
*
* where:
* EMPTY indicates that ALPN is disabled
* UNUSED indicates that no ALPN values are supplied (server-side only)
* ERROR indicates that an exception is expected
* NONE indicates that no ALPN is expected
*
* This example is based on our standard SSLEngineTemplate.
*
* The immediate consumer of ALPN will be HTTP/2 (RFC 7540), aka H2. The H2 IETF
* Working Group wanted to use TLSv1.3+ as the secure transport mechanism, but
* TLSv1.3 wasn't ready. The H2 folk agreed to a compromise that only TLSv1.2+
* can be used, and that if TLSv1.2 was selected, non-TLSv.1.3-approved
* ciphersuites would be blacklisted and their use discouraged.
*
* In order to support connections that might negotiate either HTTP/1.1 and H2,
* the guidance from the IETF Working Group is that the H2 ciphersuites be
* prioritized/tried first.
*/
/*
* The original SSLEngineTemplate comments follow.
*
* A SSLEngine usage example which simplifies the presentation
* by removing the I/O and multi-threading concerns.
*
* The test creates two SSLEngines, simulating a client and server.
* The "transport" layer consists two byte buffers: think of them
* as directly connected pipes.
*
* Note, this is a *very* simple example: real code will be much more
* involved. For example, different threading and I/O models could be
* used, transport mechanisms could close unexpectedly, and so on.
*
* When this application runs, notice that several messages
* (wrap/unwrap) pass before any application data is consumed or
* produced. (For more information, please see the SSL/TLS
* specifications.) There may several steps for a successful handshake,
* so it's typical to see the following series of operations:
*
* client server message
* ====== ====== =======
* wrap() ... ClientHello
* ... unwrap() ClientHello
* ... wrap() ServerHello/Certificate
* unwrap() ... ServerHello/Certificate
* wrap() ... ClientKeyExchange
* wrap() ... ChangeCipherSpec
* wrap() ... Finished
* ... unwrap() ClientKeyExchange
* ... unwrap() ChangeCipherSpec
* ... unwrap() Finished
* ... wrap() ChangeCipherSpec
* ... wrap() Finished
* unwrap() ... ChangeCipherSpec
* unwrap() ... Finished
*/
import javax.net.ssl.*;
import javax.net.ssl.SSLEngineResult.*;
import java.io.*;
import java.security.*;
import java.nio.*;
import java.util.Arrays;
public class SSLEngineAlpnTest {
/*
* Enables logging of the SSLEngine operations.
*/
private static final boolean logging = true;
/*
* Enables the JSSE system debugging system property:
*
* -Djavax.net.debug=all
*
* This gives a lot of low-level information about operations underway,
* including specific handshake messages, and might be best examined
* after gaining some familiarity with this application.
*/
private static final boolean debug = false;
private static boolean hasServerAPs; // whether server APs are present
private static boolean hasCallback; // whether a callback is present
private final SSLContext sslc;
private SSLEngine clientEngine; // client Engine
private ByteBuffer clientOut; // write side of clientEngine
private ByteBuffer clientIn; // read side of clientEngine
private SSLEngine serverEngine; // server Engine
private ByteBuffer serverOut; // write side of serverEngine
private ByteBuffer serverIn; // read side of serverEngine
/*
* For data transport, this example uses local ByteBuffers. This
* isn't really useful, but the purpose of this example is to show
* SSLEngine concepts, not how to do network transport.
*/
private ByteBuffer cTOs; // "reliable" transport client->server
private ByteBuffer sTOc; // "reliable" transport server->client
/*
* The following is to set up the keystores.
*/
private static final String pathToStores = "../etc";
private static final String keyStoreFile = "keystore";
private static final String trustStoreFile = "truststore";
private static final String passwd = "passphrase";
private static final String keyFilename
= System.getProperty("test.src", ".") + "/" + pathToStores
+ "/" + keyStoreFile;
private static final String trustFilename
= System.getProperty("test.src", ".") + "/" + pathToStores
+ "/" + trustStoreFile;
/*
* Main entry point for this test.
*/
public static void main(String args[]) throws Exception {
if (debug) {
System.setProperty("javax.net.debug", "all");
}
System.setProperty("jdk.tls.acknowledgeCloseNotify", "true");
System.out.println("Test args: " + Arrays.toString(args));
// Validate parameters
if (args.length != 4) {
throw new Exception("Invalid number of test parameters");
}
hasServerAPs = !args[0].equals("UNUSED"); // are server APs being used?
hasCallback = !args[1].equals("UNUSED"); // is callback being used?
SSLEngineAlpnTest test = new SSLEngineAlpnTest(args[3]);
try {
test.runTest(convert(args[0]), args[1], convert(args[2]), args[3]);
} catch (SSLHandshakeException she) {
if (args[3].equals("ERROR")) {
System.out.println("Caught the expected exception: " + she);
} else {
throw she;
}
}
System.out.println("Test Passed.");
}
/*
* Create an initialized SSLContext to use for these tests.
*/
public SSLEngineAlpnTest(String expectedAP) throws Exception {
KeyStore ks = KeyStore.getInstance("JKS");
KeyStore ts = KeyStore.getInstance("JKS");
char[] passphrase = "passphrase".toCharArray();
ks.load(new FileInputStream(keyFilename), passphrase);
ts.load(new FileInputStream(trustFilename), passphrase);
KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
kmf.init(ks, passphrase);
KeyManager [] kms = kmf.getKeyManagers();
if (!(kms[0] instanceof X509ExtendedKeyManager)) {
throw new Exception("kms[0] not X509ExtendedKeyManager");
}
kms = new KeyManager[] { new MyX509ExtendedKeyManager(
(X509ExtendedKeyManager) kms[0], expectedAP,
!hasCallback && hasServerAPs) };
TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509");
tmf.init(ts);
SSLContext sslCtx = SSLContext.getInstance("TLS");
sslCtx.init(kms, tmf.getTrustManagers(), null);
sslc = sslCtx;
}
/*
* Convert a comma-separated list into an array of strings.
*/
private static String[] convert(String list) {
if (list.equals("UNUSED")) {
return null;
}
if (list.equals("EMPTY")) {
return new String[0];
}
String[] strings;
if (list.indexOf(',') > 0) {
strings = list.split(",");
} else {
strings = new String[]{ list };
}
return strings;
}
/*
* Run the test.
*
* Sit in a tight loop, both engines calling wrap/unwrap regardless
* of whether data is available or not. We do this until both engines
* report back they are closed.
*
* The main loop handles all of the I/O phases of the SSLEngine's
* lifetime:
*
* initial handshaking
* application data transfer
* engine closing
*
* One could easily separate these phases into separate
* sections of code.
*/
private void runTest(String[] serverAPs, String callbackAP,
String[] clientAPs, String expectedAP) throws Exception {
boolean dataDone = false;
createSSLEngines(serverAPs, callbackAP, clientAPs);
createBuffers();
SSLEngineResult clientResult; // results from client's last operation
SSLEngineResult serverResult; // results from server's last operation
/*
* Examining the SSLEngineResults could be much more involved,
* and may alter the overall flow of the application.
*
* For example, if we received a BUFFER_OVERFLOW when trying
* to write to the output pipe, we could reallocate a larger
* pipe, but instead we wait for the peer to drain it.
*/
while (!isEngineClosed(clientEngine)
|| !isEngineClosed(serverEngine)) {
log("================");
clientResult = clientEngine.wrap(clientOut, cTOs);
log("client wrap: ", clientResult);
runDelegatedTasks(clientResult, clientEngine);
checkAPResult(clientEngine, clientResult, expectedAP);
serverResult = serverEngine.wrap(serverOut, sTOc);
log("server wrap: ", serverResult);
runDelegatedTasks(serverResult, serverEngine);
checkAPResult(serverEngine, serverResult, expectedAP);
cTOs.flip();
sTOc.flip();
log("----");
clientResult = clientEngine.unwrap(sTOc, clientIn);
log("client unwrap: ", clientResult);
runDelegatedTasks(clientResult, clientEngine);
checkAPResult(clientEngine, clientResult, expectedAP);
serverResult = serverEngine.unwrap(cTOs, serverIn);
log("server unwrap: ", serverResult);
runDelegatedTasks(serverResult, serverEngine);
checkAPResult(serverEngine, serverResult, expectedAP);
cTOs.compact();
sTOc.compact();
/*
* After we've transfered all application data between the client
* and server, we close the clientEngine's outbound stream.
* This generates a close_notify handshake message, which the
* server engine receives and responds by closing itself.
*/
if (!dataDone && (clientOut.limit() == serverIn.position())
&& (serverOut.limit() == clientIn.position())) {
/*
* A sanity check to ensure we got what was sent.
*/
checkTransfer(serverOut, clientIn);
checkTransfer(clientOut, serverIn);
log("\tClosing clientEngine's *OUTBOUND*...");
clientEngine.closeOutbound();
// serverEngine.closeOutbound();
dataDone = true;
}
}
}
/*
* Check that the resulting connection meets our defined ALPN
* criteria. If we were connecting to a non-JSSE implementation,
* the server might have negotiated something we shouldn't accept.
*
* If we were expecting an ALPN value from server, let's make sure
* the conditions match.
*/
private static void checkAPResult(SSLEngine engine, SSLEngineResult result,
String expectedAP) throws Exception {
if (result.getHandshakeStatus() != HandshakeStatus.FINISHED) {
return;
}
if (engine.getHandshakeApplicationProtocol() != null) {
throw new Exception ("getHandshakeApplicationProtocol() should "
+ "return null after the handshake is completed");
}
String ap = engine.getApplicationProtocol();
System.out.println("Application Protocol: \"" + ap + "\"");
if (ap == null) {
throw new Exception(
"Handshake was completed but null was received");
}
if (expectedAP.equals("NONE")) {
if (!ap.isEmpty()) {
throw new Exception("Expected no ALPN value");
} else {
System.out.println("No ALPN value negotiated, as expected");
}
} else if (!expectedAP.equals(ap)) {
throw new Exception(expectedAP +
" ALPN value not available on negotiated connection");
}
}
/*
* Using the SSLContext created during object creation,
* create/configure the SSLEngines we'll use for this test.
*/
private void createSSLEngines(String[] serverAPs, String callbackAP,
String[] clientAPs) throws Exception {
/*
* Configure the serverEngine to act as a server in the SSL/TLS
* handshake. Also, require SSL client authentication.
*/
serverEngine = sslc.createSSLEngine();
serverEngine.setUseClientMode(false);
SSLParameters sslp = serverEngine.getSSLParameters();
sslp.setNeedClientAuth(true);
/*
* The default ciphersuite ordering from the SSLContext may not
* reflect "h2" ciphersuites as being preferred, additionally the
* client may not send them in an appropriate order. We could resort
* the suite list if so desired.
*/
String[] suites = sslp.getCipherSuites();
sslp.setCipherSuites(suites);
if (serverAPs != null) {
sslp.setApplicationProtocols(serverAPs);
}
sslp.setUseCipherSuitesOrder(true); // Set server side order
serverEngine.setSSLParameters(sslp);
// check that no callback has been registered
if (serverEngine.getHandshakeApplicationProtocolSelector() != null) {
throw new Exception("getHandshakeApplicationProtocolSelector() " +
"should return null");
}
if (hasCallback) {
serverEngine.setHandshakeApplicationProtocolSelector(
(sslEngine, clientProtocols) -> {
return callbackAP.equals("EMPTY") ? "" : callbackAP;
});
// check that the callback can be retrieved
if (serverEngine.getHandshakeApplicationProtocolSelector()
== null) {
throw new Exception("getHandshakeApplicationProtocolSelector()"
+ " should return non-null");
}
}
/*
* Similar to above, but using client mode instead.
*/
clientEngine = sslc.createSSLEngine("client", 80);
clientEngine.setUseClientMode(true);
sslp = clientEngine.getSSLParameters();
if (clientAPs != null) {
sslp.setApplicationProtocols(clientAPs);
}
clientEngine.setSSLParameters(sslp);
if ((clientEngine.getHandshakeApplicationProtocol() != null) ||
(serverEngine.getHandshakeApplicationProtocol() != null)) {
throw new Exception ("getHandshakeApplicationProtocol() should "
+ "return null before the handshake starts");
}
}
/*
* Create and size the buffers appropriately.
*/
private void createBuffers() {
/*
* We'll assume the buffer sizes are the same
* between client and server.
*/
SSLSession session = clientEngine.getSession();
int appBufferMax = session.getApplicationBufferSize();
int netBufferMax = session.getPacketBufferSize();
/*
* We'll make the input buffers a bit bigger than the max needed
* size, so that unwrap()s following a successful data transfer
* won't generate BUFFER_OVERFLOWS.
*
* We'll use a mix of direct and indirect ByteBuffers for
* tutorial purposes only. In reality, only use direct
* ByteBuffers when they give a clear performance enhancement.
*/
clientIn = ByteBuffer.allocate(appBufferMax + 50);
serverIn = ByteBuffer.allocate(appBufferMax + 50);
cTOs = ByteBuffer.allocateDirect(netBufferMax);
sTOc = ByteBuffer.allocateDirect(netBufferMax);
clientOut = ByteBuffer.wrap("Hi Server, I'm Client".getBytes());
serverOut = ByteBuffer.wrap("Hello Client, I'm Server".getBytes());
}
/*
* If the result indicates that we have outstanding tasks to do,
* go ahead and run them in this thread.
*/
private static void runDelegatedTasks(SSLEngineResult result,
SSLEngine engine) throws Exception {
if (result.getHandshakeStatus() == HandshakeStatus.NEED_TASK) {
Runnable runnable;
while ((runnable = engine.getDelegatedTask()) != null) {
log("\trunning delegated task...");
runnable.run();
}
HandshakeStatus hsStatus = engine.getHandshakeStatus();
if (hsStatus == HandshakeStatus.NEED_TASK) {
throw new Exception(
"handshake shouldn't need additional tasks");
}
log("\tnew HandshakeStatus: " + hsStatus);
}
}
private static boolean isEngineClosed(SSLEngine engine) {
return (engine.isOutboundDone() && engine.isInboundDone());
}
/*
* Simple check to make sure everything came across as expected.
*/
private static void checkTransfer(ByteBuffer a, ByteBuffer b)
throws Exception {
a.flip();
b.flip();
if (!a.equals(b)) {
throw new Exception("Data didn't transfer cleanly");
} else {
log("\tData transferred cleanly");
}
a.position(a.limit());
b.position(b.limit());
a.limit(a.capacity());
b.limit(b.capacity());
}
/*
* Logging code
*/
private static boolean resultOnce = true;
private static void log(String str, SSLEngineResult result) {
if (!logging) {
return;
}
if (resultOnce) {
resultOnce = false;
System.out.println("The format of the SSLEngineResult is: \n"
+ "\t\"getStatus() / getHandshakeStatus()\" +\n"
+ "\t\"bytesConsumed() / bytesProduced()\"\n");
}
HandshakeStatus hsStatus = result.getHandshakeStatus();
log(str
+ result.getStatus() + "/" + hsStatus + ", "
+ result.bytesConsumed() + "/" + result.bytesProduced()
+ " bytes");
if (hsStatus == HandshakeStatus.FINISHED) {
log("\t...ready for application data");
}
}
private static void log(String str) {
if (logging) {
System.out.println(str);
}
}
}