| /* |
| * Copyright (c) 2015, 2019, 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 java.security.SecureRandom; |
| import java.security.cert.X509Certificate; |
| import java.text.MessageFormat; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Locale; |
| import java.util.Objects; |
| import javax.net.ssl.SSLException; |
| import javax.net.ssl.SSLHandshakeException; |
| import javax.net.ssl.SSLPeerUnverifiedException; |
| import javax.net.ssl.SSLProtocolException; |
| import static sun.security.ssl.ClientAuthType.CLIENT_AUTH_REQUIRED; |
| import sun.security.ssl.SSLHandshake.HandshakeMessage; |
| import sun.security.ssl.SupportedVersionsExtension.CHSupportedVersionsSpec; |
| |
| /** |
| * Pack of the ClientHello handshake message. |
| */ |
| final class ClientHello { |
| static final SSLProducer kickstartProducer = |
| new ClientHelloKickstartProducer(); |
| static final SSLConsumer handshakeConsumer = |
| new ClientHelloConsumer(); |
| static final HandshakeProducer handshakeProducer = |
| new ClientHelloProducer(); |
| |
| private static final HandshakeConsumer t12HandshakeConsumer = |
| new T12ClientHelloConsumer(); |
| private static final HandshakeConsumer t13HandshakeConsumer = |
| new T13ClientHelloConsumer(); |
| private static final HandshakeConsumer d12HandshakeConsumer = |
| new D12ClientHelloConsumer(); |
| private static final HandshakeConsumer d13HandshakeConsumer = |
| new D13ClientHelloConsumer(); |
| |
| /** |
| * The ClientHello handshake message. |
| * |
| * See RFC 5264/4346/2246/6347 for the specifications. |
| */ |
| static final class ClientHelloMessage extends HandshakeMessage { |
| private final boolean isDTLS; |
| |
| final int clientVersion; |
| final RandomCookie clientRandom; |
| final SessionId sessionId; |
| private byte[] cookie; // DTLS only |
| final int[] cipherSuiteIds; |
| final List<CipherSuite> cipherSuites; // known cipher suites only |
| final byte[] compressionMethod; |
| final SSLExtensions extensions; |
| |
| private static final byte[] NULL_COMPRESSION = new byte[] {0}; |
| |
| ClientHelloMessage(HandshakeContext handshakeContext, |
| int clientVersion, SessionId sessionId, |
| List<CipherSuite> cipherSuites, SecureRandom generator) { |
| super(handshakeContext); |
| this.isDTLS = handshakeContext.sslContext.isDTLS(); |
| |
| this.clientVersion = clientVersion; |
| this.clientRandom = new RandomCookie(generator); |
| this.sessionId = sessionId; |
| if (isDTLS) { |
| this.cookie = new byte[0]; |
| } else { |
| this.cookie = null; |
| } |
| |
| this.cipherSuites = cipherSuites; |
| this.cipherSuiteIds = getCipherSuiteIds(cipherSuites); |
| this.extensions = new SSLExtensions(this); |
| |
| // Don't support compression. |
| this.compressionMethod = NULL_COMPRESSION; |
| } |
| |
| /* Read up to the binders in the PSK extension. After this method |
| * returns, the ByteBuffer position will be at end of the message |
| * fragment that should be hashed to produce the PSK binder values. |
| * The client of this method can use this position to determine the |
| * message fragment and produce the binder values. |
| */ |
| static void readPartial(TransportContext tc, |
| ByteBuffer m) throws IOException { |
| boolean isDTLS = tc.sslContext.isDTLS(); |
| |
| // version |
| Record.getInt16(m); |
| |
| new RandomCookie(m); |
| |
| // session ID |
| Record.getBytes8(m); |
| |
| // DTLS cookie |
| if (isDTLS) { |
| Record.getBytes8(m); |
| } |
| |
| // cipher suite IDs |
| Record.getBytes16(m); |
| // compression method |
| Record.getBytes8(m); |
| // read extensions, if present |
| if (m.remaining() >= 2) { |
| int remaining = Record.getInt16(m); |
| while (remaining > 0) { |
| int id = Record.getInt16(m); |
| int extLen = Record.getInt16(m); |
| remaining -= extLen + 4; |
| |
| if (id == SSLExtension.CH_PRE_SHARED_KEY.id) { |
| // ensure pre_shared_key is the last extension |
| if (remaining > 0) { |
| throw tc.fatal(Alert.ILLEGAL_PARAMETER, |
| "pre_shared_key extension is not last"); |
| } |
| // read only up to the IDs |
| Record.getBytes16(m); |
| return; |
| } else { |
| m.position(m.position() + extLen); |
| |
| } |
| } |
| } // Otherwise, ignore the remaining bytes. |
| } |
| |
| ClientHelloMessage(HandshakeContext handshakeContext, ByteBuffer m, |
| SSLExtension[] supportedExtensions) throws IOException { |
| super(handshakeContext); |
| this.isDTLS = handshakeContext.sslContext.isDTLS(); |
| |
| this.clientVersion = ((m.get() & 0xFF) << 8) | (m.get() & 0xFF); |
| this.clientRandom = new RandomCookie(m); |
| this.sessionId = new SessionId(Record.getBytes8(m)); |
| try { |
| sessionId.checkLength(clientVersion); |
| } catch (SSLProtocolException ex) { |
| throw handshakeContext.conContext.fatal( |
| Alert.ILLEGAL_PARAMETER, ex); |
| } |
| if (isDTLS) { |
| this.cookie = Record.getBytes8(m); |
| } else { |
| this.cookie = null; |
| } |
| |
| byte[] encodedIds = Record.getBytes16(m); |
| if (encodedIds.length == 0 || (encodedIds.length & 0x01) != 0) { |
| throw handshakeContext.conContext.fatal( |
| Alert.ILLEGAL_PARAMETER, |
| "Invalid ClientHello message"); |
| } |
| |
| this.cipherSuiteIds = new int[encodedIds.length >> 1]; |
| for (int i = 0, j = 0; i < encodedIds.length; i++, j++) { |
| cipherSuiteIds[j] = |
| ((encodedIds[i++] & 0xFF) << 8) | (encodedIds[i] & 0xFF); |
| } |
| this.cipherSuites = getCipherSuites(cipherSuiteIds); |
| |
| this.compressionMethod = Record.getBytes8(m); |
| // In TLS 1.3, use of certain extensions is mandatory. |
| if (m.hasRemaining()) { |
| this.extensions = |
| new SSLExtensions(this, m, supportedExtensions); |
| } else { |
| this.extensions = new SSLExtensions(this); |
| } |
| } |
| |
| void setHelloCookie(byte[] cookie) { |
| this.cookie = cookie; |
| } |
| |
| // DTLS 1.0/1.2, for cookie generation. |
| byte[] getHelloCookieBytes() { |
| HandshakeOutStream hos = new HandshakeOutStream(null); |
| try { |
| // copied from send() method |
| hos.putInt8((byte)((clientVersion >>> 8) & 0xFF)); |
| hos.putInt8((byte)(clientVersion & 0xFF)); |
| hos.write(clientRandom.randomBytes, 0, 32); |
| hos.putBytes8(sessionId.getId()); |
| // ignore cookie |
| hos.putBytes16(getEncodedCipherSuites()); |
| hos.putBytes8(compressionMethod); |
| extensions.send(hos); // In TLS 1.3, use of certain |
| // extensions is mandatory. |
| } catch (IOException ioe) { |
| // unlikely |
| } |
| |
| return hos.toByteArray(); |
| } |
| |
| // (D)TLS 1.3, for cookie generation. |
| byte[] getHeaderBytes() { |
| HandshakeOutStream hos = new HandshakeOutStream(null); |
| try { |
| // copied from send() method |
| hos.putInt8((byte)((clientVersion >>> 8) & 0xFF)); |
| hos.putInt8((byte)(clientVersion & 0xFF)); |
| hos.write(clientRandom.randomBytes, 0, 32); |
| hos.putBytes8(sessionId.getId()); |
| hos.putBytes16(getEncodedCipherSuites()); |
| hos.putBytes8(compressionMethod); |
| } catch (IOException ioe) { |
| // unlikely |
| } |
| |
| return hos.toByteArray(); |
| } |
| |
| private static int[] getCipherSuiteIds( |
| List<CipherSuite> cipherSuites) { |
| if (cipherSuites != null) { |
| int[] ids = new int[cipherSuites.size()]; |
| int i = 0; |
| for (CipherSuite cipherSuite : cipherSuites) { |
| ids[i++] = cipherSuite.id; |
| } |
| |
| return ids; |
| } |
| |
| return new int[0]; |
| } |
| |
| private static List<CipherSuite> getCipherSuites(int[] ids) { |
| List<CipherSuite> cipherSuites = new LinkedList<>(); |
| for (int id : ids) { |
| CipherSuite cipherSuite = CipherSuite.valueOf(id); |
| if (cipherSuite != null) { |
| cipherSuites.add(cipherSuite); |
| } |
| } |
| |
| return Collections.unmodifiableList(cipherSuites); |
| } |
| |
| private List<String> getCipherSuiteNames() { |
| List<String> names = new LinkedList<>(); |
| for (int id : cipherSuiteIds) { |
| names.add(CipherSuite.nameOf(id) + |
| "(" + Utilities.byte16HexString(id) + ")"); } |
| |
| return names; |
| } |
| |
| private byte[] getEncodedCipherSuites() { |
| byte[] encoded = new byte[cipherSuiteIds.length << 1]; |
| int i = 0; |
| for (int id : cipherSuiteIds) { |
| encoded[i++] = (byte)(id >> 8); |
| encoded[i++] = (byte)id; |
| } |
| return encoded; |
| } |
| |
| @Override |
| public SSLHandshake handshakeType() { |
| return SSLHandshake.CLIENT_HELLO; |
| } |
| |
| @Override |
| public int messageLength() { |
| /* |
| * Add fixed size parts of each field... |
| * version + random + session + cipher + compress |
| */ |
| return (2 + 32 + 1 + 2 + 1 |
| + sessionId.length() /* ... + variable parts */ |
| + (isDTLS ? (1 + cookie.length) : 0) |
| + (cipherSuiteIds.length * 2) |
| + compressionMethod.length) |
| + extensions.length(); // In TLS 1.3, use of certain |
| // extensions is mandatory. |
| } |
| |
| @Override |
| public void send(HandshakeOutStream hos) throws IOException { |
| sendCore(hos); |
| extensions.send(hos); // In TLS 1.3, use of certain |
| // extensions is mandatory. |
| } |
| |
| void sendCore(HandshakeOutStream hos) throws IOException { |
| hos.putInt8((byte) (clientVersion >>> 8)); |
| hos.putInt8((byte) clientVersion); |
| hos.write(clientRandom.randomBytes, 0, 32); |
| hos.putBytes8(sessionId.getId()); |
| if (isDTLS) { |
| hos.putBytes8(cookie); |
| } |
| hos.putBytes16(getEncodedCipherSuites()); |
| hos.putBytes8(compressionMethod); |
| } |
| |
| @Override |
| public String toString() { |
| if (isDTLS) { |
| MessageFormat messageFormat = new MessageFormat( |
| "\"ClientHello\": '{'\n" + |
| " \"client version\" : \"{0}\",\n" + |
| " \"random\" : \"{1}\",\n" + |
| " \"session id\" : \"{2}\",\n" + |
| " \"cookie\" : \"{3}\",\n" + |
| " \"cipher suites\" : \"{4}\",\n" + |
| " \"compression methods\" : \"{5}\",\n" + |
| " \"extensions\" : [\n" + |
| "{6}\n" + |
| " ]\n" + |
| "'}'", |
| Locale.ENGLISH); |
| Object[] messageFields = { |
| ProtocolVersion.nameOf(clientVersion), |
| Utilities.toHexString(clientRandom.randomBytes), |
| sessionId.toString(), |
| Utilities.toHexString(cookie), |
| getCipherSuiteNames().toString(), |
| Utilities.toHexString(compressionMethod), |
| Utilities.indent(Utilities.indent(extensions.toString())) |
| }; |
| |
| return messageFormat.format(messageFields); |
| } else { |
| MessageFormat messageFormat = new MessageFormat( |
| "\"ClientHello\": '{'\n" + |
| " \"client version\" : \"{0}\",\n" + |
| " \"random\" : \"{1}\",\n" + |
| " \"session id\" : \"{2}\",\n" + |
| " \"cipher suites\" : \"{3}\",\n" + |
| " \"compression methods\" : \"{4}\",\n" + |
| " \"extensions\" : [\n" + |
| "{5}\n" + |
| " ]\n" + |
| "'}'", |
| Locale.ENGLISH); |
| Object[] messageFields = { |
| ProtocolVersion.nameOf(clientVersion), |
| Utilities.toHexString(clientRandom.randomBytes), |
| sessionId.toString(), |
| getCipherSuiteNames().toString(), |
| Utilities.toHexString(compressionMethod), |
| Utilities.indent(Utilities.indent(extensions.toString())) |
| }; |
| |
| return messageFormat.format(messageFields); |
| } |
| } |
| } |
| |
| /** |
| * The "ClientHello" handshake message kick start producer. |
| */ |
| private static final |
| class ClientHelloKickstartProducer implements SSLProducer { |
| // Prevent instantiation of this class. |
| private ClientHelloKickstartProducer() { |
| // blank |
| } |
| |
| // Produce kickstart handshake message. |
| @Override |
| public byte[] produce(ConnectionContext context) throws IOException { |
| // The producing happens in client side only. |
| ClientHandshakeContext chc = (ClientHandshakeContext)context; |
| |
| // clean up this producer |
| chc.handshakeProducers.remove(SSLHandshake.CLIENT_HELLO.id); |
| |
| // the max protocol version this client is supporting. |
| ProtocolVersion maxProtocolVersion = chc.maximumActiveProtocol; |
| |
| // session ID of the ClientHello message |
| SessionId sessionId = new SessionId(new byte[0]); |
| |
| // a list of cipher suites sent by the client |
| List<CipherSuite> cipherSuites = chc.activeCipherSuites; |
| |
| // |
| // Try to resume an existing session. |
| // |
| SSLSessionContextImpl ssci = (SSLSessionContextImpl) |
| chc.sslContext.engineGetClientSessionContext(); |
| SSLSessionImpl session = ssci.get( |
| chc.conContext.transport.getPeerHost(), |
| chc.conContext.transport.getPeerPort()); |
| if (session != null) { |
| // If unsafe server certificate change is not allowed, reserve |
| // current server certificates if the previous handshake is a |
| // session-resumption abbreviated initial handshake. |
| if (!ClientHandshakeContext.allowUnsafeServerCertChange && |
| session.isSessionResumption()) { |
| try { |
| // If existing, peer certificate chain cannot be null. |
| chc.reservedServerCerts = |
| (X509Certificate[])session.getPeerCertificates(); |
| } catch (SSLPeerUnverifiedException puve) { |
| // Maybe not certificate-based, ignore the exception. |
| } |
| } |
| |
| if (!session.isRejoinable()) { |
| session = null; |
| if (SSLLogger.isOn && |
| SSLLogger.isOn("ssl,handshake,verbose")) { |
| SSLLogger.finest( |
| "Can't resume, the session is not rejoinable"); |
| } |
| } |
| } |
| |
| CipherSuite sessionSuite = null; |
| if (session != null) { |
| sessionSuite = session.getSuite(); |
| if (!chc.isNegotiable(sessionSuite)) { |
| session = null; |
| if (SSLLogger.isOn && |
| SSLLogger.isOn("ssl,handshake,verbose")) { |
| SSLLogger.finest( |
| "Can't resume, unavailable session cipher suite"); |
| } |
| } |
| } |
| |
| ProtocolVersion sessionVersion = null; |
| if (session != null) { |
| sessionVersion = session.getProtocolVersion(); |
| if (!chc.isNegotiable(sessionVersion)) { |
| session = null; |
| if (SSLLogger.isOn && |
| SSLLogger.isOn("ssl,handshake,verbose")) { |
| SSLLogger.finest( |
| "Can't resume, unavailable protocol version"); |
| } |
| } |
| } |
| |
| if (session != null && |
| !sessionVersion.useTLS13PlusSpec() && |
| SSLConfiguration.useExtendedMasterSecret) { |
| |
| boolean isEmsAvailable = chc.sslConfig.isAvailable( |
| SSLExtension.CH_EXTENDED_MASTER_SECRET, sessionVersion); |
| if (isEmsAvailable && !session.useExtendedMasterSecret && |
| !SSLConfiguration.allowLegacyResumption) { |
| // perform full handshake instead |
| // |
| // The client SHOULD NOT offer an abbreviated handshake |
| // to resume a session that does not use an extended |
| // master secret. Instead, it SHOULD offer a full |
| // handshake. |
| session = null; |
| } |
| |
| if ((session != null) && |
| !ClientHandshakeContext.allowUnsafeServerCertChange) { |
| // It is fine to move on with abbreviate handshake if |
| // endpoint identification is enabled. |
| String identityAlg = chc.sslConfig.identificationProtocol; |
| if (identityAlg == null || identityAlg.isEmpty()) { |
| if (isEmsAvailable) { |
| if (!session.useExtendedMasterSecret) { |
| // perform full handshake instead |
| session = null; |
| } // Otherwise, use extended master secret. |
| } else { |
| // The extended master secret extension does not |
| // apply to SSL 3.0. Perform a full handshake |
| // instead. |
| // |
| // Note that the useExtendedMasterSecret is |
| // extended to protect SSL 3.0 connections, |
| // by discarding abbreviate handshake. |
| session = null; |
| } |
| } |
| } |
| } |
| |
| // ensure that the endpoint identification algorithm matches the |
| // one in the session |
| String identityAlg = chc.sslConfig.identificationProtocol; |
| if (session != null && identityAlg != null) { |
| String sessionIdentityAlg = |
| session.getIdentificationProtocol(); |
| if (!identityAlg.equalsIgnoreCase(sessionIdentityAlg)) { |
| if (SSLLogger.isOn && |
| SSLLogger.isOn("ssl,handshake,verbose")) { |
| SSLLogger.finest("Can't resume, endpoint id" + |
| " algorithm does not match, requested: " + |
| identityAlg + ", cached: " + sessionIdentityAlg); |
| } |
| session = null; |
| } |
| } |
| |
| if (session != null) { |
| if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake,verbose")) { |
| SSLLogger.finest("Try resuming session", session); |
| } |
| |
| // only set session id if session is 1.2 or earlier |
| if (!session.getProtocolVersion().useTLS13PlusSpec()) { |
| sessionId = session.getSessionId(); |
| } |
| if (!maxProtocolVersion.equals(sessionVersion)) { |
| maxProtocolVersion = sessionVersion; |
| |
| // Update protocol version number in underlying socket and |
| // handshake output stream, so that the output records |
| // (at the record layer) have the correct version |
| chc.setVersion(sessionVersion); |
| } |
| |
| // If no new session is allowed, force use of the previous |
| // session ciphersuite, and add the renegotiation SCSV if |
| // necessary. |
| if (!chc.sslConfig.enableSessionCreation) { |
| if (!chc.conContext.isNegotiated && |
| !sessionVersion.useTLS13PlusSpec() && |
| cipherSuites.contains( |
| CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV)) { |
| cipherSuites = Arrays.asList(sessionSuite, |
| CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV); |
| } else { // otherwise, use renegotiation_info extension |
| cipherSuites = Arrays.asList(sessionSuite); |
| } |
| |
| if (SSLLogger.isOn && |
| SSLLogger.isOn("ssl,handshake,verbose")) { |
| SSLLogger.finest( |
| "No new session is allowed, so try to resume " + |
| "the session cipher suite only", sessionSuite); |
| } |
| } |
| |
| chc.isResumption = true; |
| chc.resumingSession = session; |
| } |
| |
| if (session == null) { |
| if (!chc.sslConfig.enableSessionCreation) { |
| throw new SSLHandshakeException( |
| "No new session is allowed and " + |
| "no existing session can be resumed"); |
| } |
| |
| if (maxProtocolVersion.useTLS13PlusSpec() && |
| SSLConfiguration.useCompatibilityMode) { |
| // In compatibility mode, the TLS 1.3 legacy_session_id |
| // field MUST be non-empty, so a client not offering a |
| // pre-TLS 1.3 session MUST generate a new 32-byte value. |
| sessionId = |
| new SessionId(true, chc.sslContext.getSecureRandom()); |
| } |
| } |
| |
| ProtocolVersion minimumVersion = ProtocolVersion.NONE; |
| for (ProtocolVersion pv : chc.activeProtocols) { |
| if (minimumVersion == ProtocolVersion.NONE || |
| pv.compare(minimumVersion) < 0) { |
| minimumVersion = pv; |
| } |
| } |
| |
| // exclude SCSV for secure renegotiation |
| if (!minimumVersion.useTLS13PlusSpec()) { |
| if (chc.conContext.secureRenegotiation && |
| cipherSuites.contains( |
| CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV)) { |
| // The cipherSuites may be unmodifiable |
| cipherSuites = new LinkedList<>(cipherSuites); |
| cipherSuites.remove( |
| CipherSuite.TLS_EMPTY_RENEGOTIATION_INFO_SCSV); |
| } |
| } |
| |
| // make sure there is a negotiable cipher suite. |
| boolean negotiable = false; |
| for (CipherSuite suite : cipherSuites) { |
| if (chc.isNegotiable(suite)) { |
| negotiable = true; |
| break; |
| } |
| } |
| if (!negotiable) { |
| throw new SSLHandshakeException("No negotiable cipher suite"); |
| } |
| |
| // Create the handshake message. |
| ProtocolVersion clientHelloVersion = maxProtocolVersion; |
| if (clientHelloVersion.useTLS13PlusSpec()) { |
| // In (D)TLS 1.3, the client indicates its version preferences |
| // in the "supported_versions" extension and the client_version |
| // (legacy_version) field MUST be set to (D)TLS 1.2. |
| if (clientHelloVersion.isDTLS) { |
| clientHelloVersion = ProtocolVersion.DTLS12; |
| } else { |
| clientHelloVersion = ProtocolVersion.TLS12; |
| } |
| } |
| |
| ClientHelloMessage chm = new ClientHelloMessage(chc, |
| clientHelloVersion.id, sessionId, cipherSuites, |
| chc.sslContext.getSecureRandom()); |
| |
| // cache the client random number for further using |
| chc.clientHelloRandom = chm.clientRandom; |
| chc.clientHelloVersion = clientHelloVersion.id; |
| |
| // Produce extensions for ClientHello handshake message. |
| SSLExtension[] extTypes = chc.sslConfig.getEnabledExtensions( |
| SSLHandshake.CLIENT_HELLO, chc.activeProtocols); |
| chm.extensions.produce(chc, extTypes); |
| |
| if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
| SSLLogger.fine("Produced ClientHello handshake message", chm); |
| } |
| |
| // Output the handshake message. |
| chm.write(chc.handshakeOutput); |
| chc.handshakeOutput.flush(); |
| |
| // Reserve the initial ClientHello message for the follow on |
| // cookie exchange if needed. |
| chc.initialClientHelloMsg = chm; |
| |
| // What's the expected response? |
| chc.handshakeConsumers.put( |
| SSLHandshake.SERVER_HELLO.id, SSLHandshake.SERVER_HELLO); |
| if (chc.sslContext.isDTLS() && |
| !minimumVersion.useTLS13PlusSpec()) { |
| chc.handshakeConsumers.put( |
| SSLHandshake.HELLO_VERIFY_REQUEST.id, |
| SSLHandshake.HELLO_VERIFY_REQUEST); |
| } |
| |
| // The handshake message has been delivered. |
| return null; |
| } |
| } |
| |
| private static final |
| class ClientHelloProducer implements HandshakeProducer { |
| // Prevent instantiation of this class. |
| private ClientHelloProducer() { |
| // blank |
| } |
| |
| // Response to one of the following handshake message: |
| // HelloRequest (SSL 3.0/TLS 1.0/1.1/1.2) |
| // ServerHello(HelloRetryRequest) (TLS 1.3) |
| // HelloVerifyRequest (DTLS 1.0/1.2) |
| @Override |
| public byte[] produce(ConnectionContext context, |
| HandshakeMessage message) throws IOException { |
| // The producing happens in client side only. |
| ClientHandshakeContext chc = (ClientHandshakeContext)context; |
| |
| SSLHandshake ht = message.handshakeType(); |
| if (ht == null) { |
| throw new UnsupportedOperationException("Not supported yet."); |
| } |
| |
| switch (ht) { |
| case HELLO_REQUEST: |
| // SSL 3.0/TLS 1.0/1.1/1.2 |
| try { |
| chc.kickstart(); |
| } catch (IOException ioe) { |
| throw chc.conContext.fatal( |
| Alert.HANDSHAKE_FAILURE, ioe); |
| } |
| |
| // The handshake message has been delivered. |
| return null; |
| case HELLO_VERIFY_REQUEST: |
| // DTLS 1.0/1.2 |
| // |
| // The HelloVerifyRequest consumer should have updated the |
| // ClientHello handshake message with cookie. |
| if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
| SSLLogger.fine( |
| "Produced ClientHello(cookie) handshake message", |
| chc.initialClientHelloMsg); |
| } |
| |
| // Output the handshake message. |
| chc.initialClientHelloMsg.write(chc.handshakeOutput); |
| chc.handshakeOutput.flush(); |
| |
| // What's the expected response? |
| chc.handshakeConsumers.put(SSLHandshake.SERVER_HELLO.id, |
| SSLHandshake.SERVER_HELLO); |
| |
| ProtocolVersion minimumVersion = ProtocolVersion.NONE; |
| for (ProtocolVersion pv : chc.activeProtocols) { |
| if (minimumVersion == ProtocolVersion.NONE || |
| pv.compare(minimumVersion) < 0) { |
| minimumVersion = pv; |
| } |
| } |
| if (chc.sslContext.isDTLS() && |
| !minimumVersion.useTLS13PlusSpec()) { |
| chc.handshakeConsumers.put( |
| SSLHandshake.HELLO_VERIFY_REQUEST.id, |
| SSLHandshake.HELLO_VERIFY_REQUEST); |
| } |
| |
| // The handshake message has been delivered. |
| return null; |
| case HELLO_RETRY_REQUEST: |
| // TLS 1.3 |
| // The HelloRetryRequest consumer should have updated the |
| // ClientHello handshake message with cookie. |
| if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
| SSLLogger.fine( |
| "Produced ClientHello(HRR) handshake message", |
| chc.initialClientHelloMsg); |
| } |
| |
| // Output the handshake message. |
| chc.initialClientHelloMsg.write(chc.handshakeOutput); |
| chc.handshakeOutput.flush(); |
| |
| // What's the expected response? |
| chc.conContext.consumers.putIfAbsent( |
| ContentType.CHANGE_CIPHER_SPEC.id, |
| ChangeCipherSpec.t13Consumer); |
| chc.handshakeConsumers.put(SSLHandshake.SERVER_HELLO.id, |
| SSLHandshake.SERVER_HELLO); |
| |
| // The handshake message has been delivered. |
| return null; |
| default: |
| throw new UnsupportedOperationException( |
| "Not supported yet."); |
| } |
| } |
| } |
| |
| /** |
| * The "ClientHello" handshake message consumer. |
| */ |
| private static final class ClientHelloConsumer implements SSLConsumer { |
| // Prevent instantiation of this class. |
| private ClientHelloConsumer() { |
| // blank |
| } |
| |
| @Override |
| public void consume(ConnectionContext context, |
| ByteBuffer message) throws IOException { |
| // The consuming happens in server side only. |
| ServerHandshakeContext shc = (ServerHandshakeContext)context; |
| |
| // clean up this consumer |
| shc.handshakeConsumers.remove(SSLHandshake.CLIENT_HELLO.id); |
| if (!shc.handshakeConsumers.isEmpty()) { |
| throw shc.conContext.fatal(Alert.UNEXPECTED_MESSAGE, |
| "No more handshake message allowed " + |
| "in a ClientHello flight"); |
| } |
| |
| // Get enabled extension types in ClientHello handshake message. |
| SSLExtension[] enabledExtensions = |
| shc.sslConfig.getEnabledExtensions( |
| SSLHandshake.CLIENT_HELLO); |
| |
| ClientHelloMessage chm = |
| new ClientHelloMessage(shc, message, enabledExtensions); |
| if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
| SSLLogger.fine("Consuming ClientHello handshake message", chm); |
| } |
| |
| shc.clientHelloVersion = chm.clientVersion; |
| onClientHello(shc, chm); |
| } |
| |
| private void onClientHello(ServerHandshakeContext context, |
| ClientHelloMessage clientHello) throws IOException { |
| // Negotiate protocol version. |
| // |
| // Check and launch SupportedVersions. |
| SSLExtension[] extTypes = new SSLExtension[] { |
| SSLExtension.CH_SUPPORTED_VERSIONS |
| }; |
| clientHello.extensions.consumeOnLoad(context, extTypes); |
| |
| ProtocolVersion negotiatedProtocol; |
| CHSupportedVersionsSpec svs = |
| (CHSupportedVersionsSpec)context.handshakeExtensions.get( |
| SSLExtension.CH_SUPPORTED_VERSIONS); |
| if (svs != null) { |
| negotiatedProtocol = |
| negotiateProtocol(context, svs.requestedProtocols); |
| } else { |
| negotiatedProtocol = |
| negotiateProtocol(context, clientHello.clientVersion); |
| } |
| context.negotiatedProtocol = negotiatedProtocol; |
| if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
| SSLLogger.fine( |
| "Negotiated protocol version: " + negotiatedProtocol.name); |
| } |
| |
| // Consume the handshake message for the specific protocol version. |
| if (negotiatedProtocol.isDTLS) { |
| if (negotiatedProtocol.useTLS13PlusSpec()) { |
| d13HandshakeConsumer.consume(context, clientHello); |
| } else { |
| d12HandshakeConsumer.consume(context, clientHello); |
| } |
| } else { |
| if (negotiatedProtocol.useTLS13PlusSpec()) { |
| t13HandshakeConsumer.consume(context, clientHello); |
| } else { |
| t12HandshakeConsumer.consume(context, clientHello); |
| } |
| } |
| } |
| |
| // Select a protocol version according to the |
| // ClientHello.client_version. |
| private ProtocolVersion negotiateProtocol( |
| ServerHandshakeContext context, |
| int clientHelloVersion) throws SSLException { |
| |
| // Per TLS 1.3 specification, server MUST negotiate TLS 1.2 or prior |
| // even if ClientHello.client_version is 0x0304 or later. |
| int chv = clientHelloVersion; |
| if (context.sslContext.isDTLS()) { |
| if (chv < ProtocolVersion.DTLS12.id) { |
| chv = ProtocolVersion.DTLS12.id; |
| } |
| } else { |
| if (chv > ProtocolVersion.TLS12.id) { |
| chv = ProtocolVersion.TLS12.id; |
| } |
| } |
| |
| // Select a protocol version from the activated protocols. |
| ProtocolVersion pv = ProtocolVersion.selectedFrom( |
| context.activeProtocols, chv); |
| if (pv == null || pv == ProtocolVersion.NONE || |
| pv == ProtocolVersion.SSL20Hello) { |
| throw context.conContext.fatal(Alert.PROTOCOL_VERSION, |
| "Client requested protocol " + |
| ProtocolVersion.nameOf(clientHelloVersion) + |
| " is not enabled or supported in server context"); |
| } |
| |
| return pv; |
| } |
| |
| // Select a protocol version according to the |
| // supported_versions extension. |
| private ProtocolVersion negotiateProtocol( |
| ServerHandshakeContext context, |
| int[] clientSupportedVersions) throws SSLException { |
| |
| // The client supported protocol versions are present in client |
| // preference order. This implementation chooses to use the server |
| // preference of protocol versions instead. |
| for (ProtocolVersion spv : context.activeProtocols) { |
| if (spv == ProtocolVersion.SSL20Hello) { |
| continue; |
| } |
| for (int cpv : clientSupportedVersions) { |
| if (cpv == ProtocolVersion.SSL20Hello.id) { |
| continue; |
| } |
| if (spv.id == cpv) { |
| return spv; |
| } |
| } |
| } |
| |
| // No protocol version can be negotiated. |
| throw context.conContext.fatal(Alert.PROTOCOL_VERSION, |
| "The client supported protocol versions " + Arrays.toString( |
| ProtocolVersion.toStringArray(clientSupportedVersions)) + |
| " are not accepted by server preferences " + |
| context.activeProtocols); |
| } |
| } |
| |
| /** |
| * The "ClientHello" handshake message consumer for TLS 1.2 and |
| * prior SSL/TLS protocol versions. |
| */ |
| private static final |
| class T12ClientHelloConsumer implements HandshakeConsumer { |
| // Prevent instantiation of this class. |
| private T12ClientHelloConsumer() { |
| // blank |
| } |
| |
| @Override |
| public void consume(ConnectionContext context, |
| HandshakeMessage message) throws IOException { |
| // The consuming happens in server side only. |
| ServerHandshakeContext shc = (ServerHandshakeContext)context; |
| ClientHelloMessage clientHello = (ClientHelloMessage)message; |
| |
| // |
| // validate |
| // |
| |
| // Reject client initiated renegotiation? |
| // |
| // If server side should reject client-initiated renegotiation, |
| // send an Alert.HANDSHAKE_FAILURE fatal alert, not a |
| // no_renegotiation warning alert (no_renegotiation must be a |
| // warning: RFC 2246). no_renegotiation might seem more |
| // natural at first, but warnings are not appropriate because |
| // the sending party does not know how the receiving party |
| // will behave. This state must be treated as a fatal server |
| // condition. |
| // |
| // This will not have any impact on server initiated renegotiation. |
| if (shc.conContext.isNegotiated) { |
| if (!shc.conContext.secureRenegotiation && |
| !HandshakeContext.allowUnsafeRenegotiation) { |
| throw shc.conContext.fatal(Alert.HANDSHAKE_FAILURE, |
| "Unsafe renegotiation is not allowed"); |
| } |
| |
| if (ServerHandshakeContext.rejectClientInitiatedRenego && |
| !shc.kickstartMessageDelivered) { |
| throw shc.conContext.fatal(Alert.HANDSHAKE_FAILURE, |
| "Client initiated renegotiation is not allowed"); |
| } |
| } |
| |
| // Is it an abbreviated handshake? |
| if (clientHello.sessionId.length() != 0) { |
| SSLSessionImpl previous = ((SSLSessionContextImpl)shc.sslContext |
| .engineGetServerSessionContext()) |
| .get(clientHello.sessionId.getId()); |
| |
| boolean resumingSession = |
| (previous != null) && previous.isRejoinable(); |
| if (!resumingSession) { |
| if (SSLLogger.isOn && |
| SSLLogger.isOn("ssl,handshake,verbose")) { |
| SSLLogger.finest( |
| "Can't resume, " + |
| "the existing session is not rejoinable"); |
| } |
| } |
| // Validate the negotiated protocol version. |
| if (resumingSession) { |
| ProtocolVersion sessionProtocol = |
| previous.getProtocolVersion(); |
| if (sessionProtocol != shc.negotiatedProtocol) { |
| resumingSession = false; |
| if (SSLLogger.isOn && |
| SSLLogger.isOn("ssl,handshake,verbose")) { |
| SSLLogger.finest( |
| "Can't resume, not the same protocol version"); |
| } |
| } |
| } |
| |
| // Validate the required client authentication. |
| if (resumingSession && |
| (shc.sslConfig.clientAuthType == CLIENT_AUTH_REQUIRED)) { |
| try { |
| previous.getPeerPrincipal(); |
| } catch (SSLPeerUnverifiedException e) { |
| resumingSession = false; |
| if (SSLLogger.isOn && |
| SSLLogger.isOn("ssl,handshake,verbose")) { |
| SSLLogger.finest( |
| "Can't resume, " + |
| "client authentication is required"); |
| } |
| } |
| } |
| |
| // Validate that the cached cipher suite. |
| if (resumingSession) { |
| CipherSuite suite = previous.getSuite(); |
| if ((!shc.isNegotiable(suite)) || |
| (!clientHello.cipherSuites.contains(suite))) { |
| resumingSession = false; |
| if (SSLLogger.isOn && |
| SSLLogger.isOn("ssl,handshake,verbose")) { |
| SSLLogger.finest( |
| "Can't resume, " + |
| "the session cipher suite is absent"); |
| } |
| } |
| } |
| |
| // ensure that the endpoint identification algorithm matches the |
| // one in the session |
| String identityAlg = shc.sslConfig.identificationProtocol; |
| if (resumingSession && identityAlg != null) { |
| String sessionIdentityAlg = |
| previous.getIdentificationProtocol(); |
| if (!identityAlg.equalsIgnoreCase(sessionIdentityAlg)) { |
| if (SSLLogger.isOn && |
| SSLLogger.isOn("ssl,handshake,verbose")) { |
| SSLLogger.finest("Can't resume, endpoint id" + |
| " algorithm does not match, requested: " + |
| identityAlg + ", cached: " + sessionIdentityAlg); |
| } |
| resumingSession = false; |
| } |
| } |
| |
| // So far so good. Note that the handshake extensions may reset |
| // the resuming options later. |
| shc.isResumption = resumingSession; |
| shc.resumingSession = resumingSession ? previous : null; |
| } |
| |
| // cache the client random number for further using |
| shc.clientHelloRandom = clientHello.clientRandom; |
| |
| // Check and launch ClientHello extensions. |
| SSLExtension[] extTypes = shc.sslConfig.getEnabledExtensions( |
| SSLHandshake.CLIENT_HELLO); |
| clientHello.extensions.consumeOnLoad(shc, extTypes); |
| |
| // |
| // update |
| // |
| if (!shc.conContext.isNegotiated) { |
| shc.conContext.protocolVersion = shc.negotiatedProtocol; |
| shc.conContext.outputRecord.setVersion(shc.negotiatedProtocol); |
| } |
| |
| // update the responders |
| // |
| // Only need to ServerHello, which may add more responders later. |
| // Note that ServerHello and HelloRetryRequest share the same |
| // handshake type/id. The ServerHello producer may be replaced |
| // by HelloRetryRequest producer if needed. |
| shc.handshakeProducers.put(SSLHandshake.SERVER_HELLO.id, |
| SSLHandshake.SERVER_HELLO); |
| |
| // |
| // produce |
| // |
| SSLHandshake[] probableHandshakeMessages = new SSLHandshake[] { |
| SSLHandshake.SERVER_HELLO, |
| |
| // full handshake messages |
| SSLHandshake.CERTIFICATE, |
| SSLHandshake.CERTIFICATE_STATUS, |
| SSLHandshake.SERVER_KEY_EXCHANGE, |
| SSLHandshake.CERTIFICATE_REQUEST, |
| SSLHandshake.SERVER_HELLO_DONE, |
| |
| // abbreviated handshake messages |
| SSLHandshake.FINISHED |
| }; |
| |
| for (SSLHandshake hs : probableHandshakeMessages) { |
| HandshakeProducer handshakeProducer = |
| shc.handshakeProducers.remove(hs.id); |
| if (handshakeProducer != null) { |
| handshakeProducer.produce(context, clientHello); |
| } |
| } |
| } |
| } |
| |
| /** |
| * The "ClientHello" handshake message consumer for TLS 1.3. |
| */ |
| private static final |
| class T13ClientHelloConsumer implements HandshakeConsumer { |
| // Prevent instantiation of this class. |
| private T13ClientHelloConsumer() { |
| // blank |
| } |
| |
| @Override |
| public void consume(ConnectionContext context, |
| HandshakeMessage message) throws IOException { |
| // The consuming happens in server side only. |
| ServerHandshakeContext shc = (ServerHandshakeContext)context; |
| ClientHelloMessage clientHello = (ClientHelloMessage)message; |
| |
| // [RFC 8446] TLS 1.3 forbids renegotiation. If a server has |
| // negotiated TLS 1.3 and receives a ClientHello at any other |
| // time, it MUST terminate the connection with an |
| // "unexpected_message" alert. |
| if (shc.conContext.isNegotiated) { |
| throw shc.conContext.fatal(Alert.UNEXPECTED_MESSAGE, |
| "Received unexpected renegotiation handshake message"); |
| } |
| |
| // The client may send a dummy change_cipher_spec record |
| // immediately after the first ClientHello. |
| shc.conContext.consumers.putIfAbsent( |
| ContentType.CHANGE_CIPHER_SPEC.id, |
| ChangeCipherSpec.t13Consumer); |
| |
| // Is it a resumption? |
| // |
| // Check and launch the "psk_key_exchange_modes" and |
| // "pre_shared_key" extensions first, which will reset the |
| // resuming session, no matter the extensions present or not. |
| shc.isResumption = true; |
| SSLExtension[] extTypes = new SSLExtension[] { |
| SSLExtension.PSK_KEY_EXCHANGE_MODES, |
| SSLExtension.CH_PRE_SHARED_KEY |
| }; |
| clientHello.extensions.consumeOnLoad(shc, extTypes); |
| |
| // Check and launch ClientHello extensions other than |
| // "psk_key_exchange_modes", "pre_shared_key", "protocol_version" |
| // and "key_share" extensions. |
| // |
| // These extensions may discard session resumption, or ask for |
| // hello retry. |
| extTypes = shc.sslConfig.getExclusiveExtensions( |
| SSLHandshake.CLIENT_HELLO, |
| Arrays.asList( |
| SSLExtension.PSK_KEY_EXCHANGE_MODES, |
| SSLExtension.CH_PRE_SHARED_KEY, |
| SSLExtension.CH_SUPPORTED_VERSIONS)); |
| clientHello.extensions.consumeOnLoad(shc, extTypes); |
| |
| if (!shc.handshakeProducers.isEmpty()) { |
| // Should be HelloRetryRequest producer. |
| goHelloRetryRequest(shc, clientHello); |
| } else { |
| goServerHello(shc, clientHello); |
| } |
| } |
| |
| private void goHelloRetryRequest(ServerHandshakeContext shc, |
| ClientHelloMessage clientHello) throws IOException { |
| HandshakeProducer handshakeProducer = |
| shc.handshakeProducers.remove( |
| SSLHandshake.HELLO_RETRY_REQUEST.id); |
| if (handshakeProducer != null) { |
| handshakeProducer.produce(shc, clientHello); |
| } else { |
| // unlikely |
| throw shc.conContext.fatal(Alert.HANDSHAKE_FAILURE, |
| "No HelloRetryRequest producer: " + shc.handshakeProducers); |
| } |
| |
| if (!shc.handshakeProducers.isEmpty()) { |
| // unlikely, but please double check. |
| throw shc.conContext.fatal(Alert.HANDSHAKE_FAILURE, |
| "unknown handshake producers: " + shc.handshakeProducers); |
| } |
| } |
| |
| private void goServerHello(ServerHandshakeContext shc, |
| ClientHelloMessage clientHello) throws IOException { |
| // |
| // validate |
| // |
| shc.clientHelloRandom = clientHello.clientRandom; |
| |
| // |
| // update |
| // |
| if (!shc.conContext.isNegotiated) { |
| shc.conContext.protocolVersion = shc.negotiatedProtocol; |
| shc.conContext.outputRecord.setVersion(shc.negotiatedProtocol); |
| } |
| |
| // update the responders |
| // |
| // Only ServerHello/HelloRetryRequest producer, which adds |
| // more responders later. |
| shc.handshakeProducers.put(SSLHandshake.SERVER_HELLO.id, |
| SSLHandshake.SERVER_HELLO); |
| |
| SSLHandshake[] probableHandshakeMessages = new SSLHandshake[] { |
| SSLHandshake.SERVER_HELLO, |
| |
| // full handshake messages |
| SSLHandshake.ENCRYPTED_EXTENSIONS, |
| SSLHandshake.CERTIFICATE_REQUEST, |
| SSLHandshake.CERTIFICATE, |
| SSLHandshake.CERTIFICATE_VERIFY, |
| SSLHandshake.FINISHED |
| }; |
| |
| // |
| // produce |
| // |
| for (SSLHandshake hs : probableHandshakeMessages) { |
| HandshakeProducer handshakeProducer = |
| shc.handshakeProducers.remove(hs.id); |
| if (handshakeProducer != null) { |
| handshakeProducer.produce(shc, clientHello); |
| } |
| } |
| } |
| } |
| |
| /** |
| * The "ClientHello" handshake message consumer for DTLS 1.2 and |
| * previous DTLS protocol versions. |
| */ |
| private static final |
| class D12ClientHelloConsumer implements HandshakeConsumer { |
| // Prevent instantiation of this class. |
| private D12ClientHelloConsumer() { |
| // blank |
| } |
| |
| @Override |
| public void consume(ConnectionContext context, |
| HandshakeMessage message) throws IOException { |
| // The consuming happens in server side only. |
| ServerHandshakeContext shc = (ServerHandshakeContext)context; |
| ClientHelloMessage clientHello = (ClientHelloMessage)message; |
| |
| // |
| // validate |
| // |
| |
| // Reject client initiated renegotiation? |
| // |
| // If server side should reject client-initiated renegotiation, |
| // send an Alert.HANDSHAKE_FAILURE fatal alert, not a |
| // no_renegotiation warning alert (no_renegotiation must be a |
| // warning: RFC 2246). no_renegotiation might seem more |
| // natural at first, but warnings are not appropriate because |
| // the sending party does not know how the receiving party |
| // will behave. This state must be treated as a fatal server |
| // condition. |
| // |
| // This will not have any impact on server initiated renegotiation. |
| if (shc.conContext.isNegotiated) { |
| if (!shc.conContext.secureRenegotiation && |
| !HandshakeContext.allowUnsafeRenegotiation) { |
| throw shc.conContext.fatal(Alert.HANDSHAKE_FAILURE, |
| "Unsafe renegotiation is not allowed"); |
| } |
| |
| if (ServerHandshakeContext.rejectClientInitiatedRenego && |
| !shc.kickstartMessageDelivered) { |
| throw shc.conContext.fatal(Alert.HANDSHAKE_FAILURE, |
| "Client initiated renegotiation is not allowed"); |
| } |
| } |
| |
| // Is it an abbreviated handshake? |
| if (clientHello.sessionId.length() != 0) { |
| SSLSessionImpl previous = ((SSLSessionContextImpl)shc.sslContext |
| .engineGetServerSessionContext()) |
| .get(clientHello.sessionId.getId()); |
| |
| boolean resumingSession = |
| (previous != null) && previous.isRejoinable(); |
| if (!resumingSession) { |
| if (SSLLogger.isOn && |
| SSLLogger.isOn("ssl,handshake,verbose")) { |
| SSLLogger.finest( |
| "Can't resume, " + |
| "the existing session is not rejoinable"); |
| } |
| } |
| // Validate the negotiated protocol version. |
| if (resumingSession) { |
| ProtocolVersion sessionProtocol = |
| previous.getProtocolVersion(); |
| if (sessionProtocol != shc.negotiatedProtocol) { |
| resumingSession = false; |
| if (SSLLogger.isOn && |
| SSLLogger.isOn("ssl,handshake,verbose")) { |
| SSLLogger.finest( |
| "Can't resume, not the same protocol version"); |
| } |
| } |
| } |
| |
| // Validate the required client authentication. |
| if (resumingSession && |
| (shc.sslConfig.clientAuthType == CLIENT_AUTH_REQUIRED)) { |
| |
| try { |
| previous.getPeerPrincipal(); |
| } catch (SSLPeerUnverifiedException e) { |
| resumingSession = false; |
| if (SSLLogger.isOn && |
| SSLLogger.isOn("ssl,handshake,verbose")) { |
| SSLLogger.finest( |
| "Can't resume, " + |
| "client authentication is required"); |
| } |
| } |
| } |
| |
| // Validate that the cached cipher suite. |
| if (resumingSession) { |
| CipherSuite suite = previous.getSuite(); |
| if ((!shc.isNegotiable(suite)) || |
| (!clientHello.cipherSuites.contains(suite))) { |
| resumingSession = false; |
| if (SSLLogger.isOn && |
| SSLLogger.isOn("ssl,handshake,verbose")) { |
| SSLLogger.finest( |
| "Can't resume, " + |
| "the session cipher suite is absent"); |
| } |
| } |
| } |
| |
| // So far so good. Note that the handshake extensions may reset |
| // the resuming options later. |
| shc.isResumption = resumingSession; |
| shc.resumingSession = resumingSession ? previous : null; |
| } |
| |
| HelloCookieManager hcm = |
| shc.sslContext.getHelloCookieManager(ProtocolVersion.DTLS10); |
| if (!shc.isResumption && |
| !hcm.isCookieValid(shc, clientHello, clientHello.cookie)) { |
| // |
| // Perform cookie exchange for DTLS handshaking if no cookie |
| // or the cookie is invalid in the ClientHello message. |
| // |
| // update the responders |
| shc.handshakeProducers.put( |
| SSLHandshake.HELLO_VERIFY_REQUEST.id, |
| SSLHandshake.HELLO_VERIFY_REQUEST); |
| |
| // |
| // produce response handshake message |
| // |
| SSLHandshake.HELLO_VERIFY_REQUEST.produce(context, clientHello); |
| |
| return; |
| } |
| |
| // cache the client random number for further using |
| shc.clientHelloRandom = clientHello.clientRandom; |
| |
| // Check and launch ClientHello extensions. |
| SSLExtension[] extTypes = shc.sslConfig.getEnabledExtensions( |
| SSLHandshake.CLIENT_HELLO); |
| clientHello.extensions.consumeOnLoad(shc, extTypes); |
| |
| // |
| // update |
| // |
| if (!shc.conContext.isNegotiated) { |
| shc.conContext.protocolVersion = shc.negotiatedProtocol; |
| shc.conContext.outputRecord.setVersion(shc.negotiatedProtocol); |
| } |
| |
| // update the responders |
| // |
| // Only need to ServerHello, which may add more responders later. |
| shc.handshakeProducers.put(SSLHandshake.SERVER_HELLO.id, |
| SSLHandshake.SERVER_HELLO); |
| |
| // |
| // produce |
| // |
| SSLHandshake[] probableHandshakeMessages = new SSLHandshake[] { |
| SSLHandshake.SERVER_HELLO, |
| |
| // full handshake messages |
| SSLHandshake.CERTIFICATE, |
| SSLHandshake.CERTIFICATE_STATUS, |
| SSLHandshake.SERVER_KEY_EXCHANGE, |
| SSLHandshake.CERTIFICATE_REQUEST, |
| SSLHandshake.SERVER_HELLO_DONE, |
| |
| // abbreviated handshake messages |
| SSLHandshake.FINISHED |
| }; |
| |
| for (SSLHandshake hs : probableHandshakeMessages) { |
| HandshakeProducer handshakeProducer = |
| shc.handshakeProducers.remove(hs.id); |
| if (handshakeProducer != null) { |
| handshakeProducer.produce(context, clientHello); |
| } |
| } |
| } |
| } |
| |
| /** |
| * The "ClientHello" handshake message consumer for DTLS 1.3. |
| */ |
| private static final |
| class D13ClientHelloConsumer implements HandshakeConsumer { |
| // Prevent instantiation of this class. |
| private D13ClientHelloConsumer() { |
| // blank |
| } |
| |
| @Override |
| public void consume(ConnectionContext context, |
| HandshakeMessage message) throws IOException { |
| throw new UnsupportedOperationException("Not supported yet."); |
| } |
| } |
| } |
