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/*
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* Copyright (c) 2015, 2018, 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. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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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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package sun.security.ssl;
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import java.io.IOException;
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import java.nio.ByteBuffer;
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import java.text.MessageFormat;
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import java.util.Locale;
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import javax.net.ssl.SSLProtocolException;
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import static sun.security.ssl.SSLExtension.CH_SUPPORTED_VERSIONS;
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import sun.security.ssl.SSLExtension.ExtensionConsumer;
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import static sun.security.ssl.SSLExtension.HRR_SUPPORTED_VERSIONS;
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import static sun.security.ssl.SSLExtension.SH_SUPPORTED_VERSIONS;
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import sun.security.ssl.SSLExtension.SSLExtensionSpec;
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import sun.security.ssl.SSLHandshake.HandshakeMessage;
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/**
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* Pack of the "supported_versions" extensions.
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*/
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final class SupportedVersionsExtension {
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static final HandshakeProducer chNetworkProducer =
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new CHSupportedVersionsProducer();
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static final ExtensionConsumer chOnLoadConsumer =
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new CHSupportedVersionsConsumer();
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static final SSLStringizer chStringizer =
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new CHSupportedVersionsStringizer();
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static final HandshakeProducer shNetworkProducer =
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new SHSupportedVersionsProducer();
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static final ExtensionConsumer shOnLoadConsumer =
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new SHSupportedVersionsConsumer();
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static final SSLStringizer shStringizer =
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new SHSupportedVersionsStringizer();
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static final HandshakeProducer hrrNetworkProducer =
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new HRRSupportedVersionsProducer();
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static final ExtensionConsumer hrrOnLoadConsumer =
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new HRRSupportedVersionsConsumer();
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static final HandshakeProducer hrrReproducer =
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new HRRSupportedVersionsReproducer();
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static final SSLStringizer hrrStringizer =
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new SHSupportedVersionsStringizer();
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/**
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* The "supported_versions" extension in ClientHello.
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*/
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static final class CHSupportedVersionsSpec implements SSLExtensionSpec {
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final int[] requestedProtocols;
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private CHSupportedVersionsSpec(int[] requestedProtocols) {
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this.requestedProtocols = requestedProtocols;
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}
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private CHSupportedVersionsSpec(ByteBuffer m) throws IOException {
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if (m.remaining() < 3) { // 1: the length of the list
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// +2: one version at least
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throw new SSLProtocolException(
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"Invalid supported_versions extension: insufficient data");
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}
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byte[] vbs = Record.getBytes8(m); // Get the version bytes.
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if (m.hasRemaining()) {
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throw new SSLProtocolException(
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"Invalid supported_versions extension: unknown extra data");
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}
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if (vbs == null || vbs.length == 0 || (vbs.length & 0x01) != 0) {
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throw new SSLProtocolException(
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"Invalid supported_versions extension: incomplete data");
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}
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int[] protocols = new int[vbs.length >> 1];
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for (int i = 0, j = 0; i < vbs.length;) {
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byte major = vbs[i++];
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byte minor = vbs[i++];
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protocols[j++] = ((major & 0xFF) << 8) | (minor & 0xFF);
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}
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this.requestedProtocols = protocols;
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}
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@Override
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public String toString() {
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MessageFormat messageFormat = new MessageFormat(
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"\"versions\": '['{0}']'", Locale.ENGLISH);
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if (requestedProtocols == null || requestedProtocols.length == 0) {
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Object[] messageFields = {
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"<no supported version specified>"
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};
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return messageFormat.format(messageFields);
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} else {
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StringBuilder builder = new StringBuilder(512);
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boolean isFirst = true;
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for (int pv : requestedProtocols) {
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if (isFirst) {
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isFirst = false;
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} else {
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builder.append(", ");
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}
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builder.append(ProtocolVersion.nameOf(pv));
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}
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Object[] messageFields = {
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builder.toString()
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};
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return messageFormat.format(messageFields);
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}
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}
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}
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private static final
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class CHSupportedVersionsStringizer implements SSLStringizer {
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@Override
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public String toString(ByteBuffer buffer) {
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try {
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return (new CHSupportedVersionsSpec(buffer)).toString();
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} catch (IOException ioe) {
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// For debug logging only, so please swallow exceptions.
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return ioe.getMessage();
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}
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}
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}
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/**
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* Network data producer of a "supported_versions" extension in ClientHello.
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*/
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private static final
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class CHSupportedVersionsProducer implements HandshakeProducer {
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// Prevent instantiation of this class.
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private CHSupportedVersionsProducer() {
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// blank
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}
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@Override
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public byte[] produce(ConnectionContext context,
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HandshakeMessage message) throws IOException {
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// The producing happens in client side only.
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ClientHandshakeContext chc = (ClientHandshakeContext)context;
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// Is it a supported and enabled extension?
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if (!chc.sslConfig.isAvailable(CH_SUPPORTED_VERSIONS)) {
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if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) {
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SSLLogger.fine(
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"Ignore unavailable extension: " +
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CH_SUPPORTED_VERSIONS.name);
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}
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return null;
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}
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// Produce the extension.
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//
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// The activated protocols are used as the supported versions.
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int[] protocols = new int[chc.activeProtocols.size()];
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int verLen = protocols.length * 2;
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byte[] extData = new byte[verLen + 1]; // 1: versions length
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extData[0] = (byte)(verLen & 0xFF);
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int i = 0, j = 1;
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for (ProtocolVersion pv : chc.activeProtocols) {
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protocols[i++] = pv.id;
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extData[j++] = pv.major;
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extData[j++] = pv.minor;
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}
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// Update the context.
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chc.handshakeExtensions.put(CH_SUPPORTED_VERSIONS,
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new CHSupportedVersionsSpec(protocols));
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return extData;
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}
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}
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/**
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* Network data consumer of a "supported_versions" extension in ClientHello.
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*/
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private static final
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class CHSupportedVersionsConsumer implements ExtensionConsumer {
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// Prevent instantiation of this class.
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private CHSupportedVersionsConsumer() {
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// blank
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}
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@Override
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public void consume(ConnectionContext context,
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HandshakeMessage message, ByteBuffer buffer) throws IOException {
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// The consuming happens in server side only.
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ServerHandshakeContext shc = (ServerHandshakeContext)context;
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// Is it a supported and enabled extension?
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if (!shc.sslConfig.isAvailable(CH_SUPPORTED_VERSIONS)) {
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if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) {
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SSLLogger.fine(
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"Ignore unavailable extension: " +
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CH_SUPPORTED_VERSIONS.name);
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}
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return; // ignore the extension
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}
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// Parse the extension.
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CHSupportedVersionsSpec spec;
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try {
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spec = new CHSupportedVersionsSpec(buffer);
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} catch (IOException ioe) {
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shc.conContext.fatal(Alert.UNEXPECTED_MESSAGE, ioe);
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return; // fatal() always throws, make the compiler happy.
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}
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// Update the context.
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shc.handshakeExtensions.put(CH_SUPPORTED_VERSIONS, spec);
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// No impact on session resumption.
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//
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// Note that the protocol version negotiation happens before the
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// session resumption negotiation. And the session resumption
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// negotiation depends on the negotiated protocol version.
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}
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}
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/**
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* The "supported_versions" extension in ServerHello and HelloRetryRequest.
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*/
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static final class SHSupportedVersionsSpec implements SSLExtensionSpec {
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final int selectedVersion;
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private SHSupportedVersionsSpec(ProtocolVersion selectedVersion) {
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this.selectedVersion = selectedVersion.id;
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}
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private SHSupportedVersionsSpec(ByteBuffer m) throws IOException {
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if (m.remaining() != 2) { // 2: the selected version
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throw new SSLProtocolException(
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"Invalid supported_versions: insufficient data");
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}
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byte major = m.get();
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byte minor = m.get();
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this.selectedVersion = ((major & 0xFF) << 8) | (minor & 0xFF);
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}
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@Override
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public String toString() {
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MessageFormat messageFormat = new MessageFormat(
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"\"selected version\": '['{0}']'", Locale.ENGLISH);
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Object[] messageFields = {
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ProtocolVersion.nameOf(selectedVersion)
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};
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return messageFormat.format(messageFields);
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}
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}
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private static final
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class SHSupportedVersionsStringizer implements SSLStringizer {
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@Override
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public String toString(ByteBuffer buffer) {
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try {
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return (new SHSupportedVersionsSpec(buffer)).toString();
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} catch (IOException ioe) {
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// For debug logging only, so please swallow exceptions.
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return ioe.getMessage();
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}
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}
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}
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/**
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* Network data producer of a "supported_versions" extension in ServerHello.
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*/
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private static final
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class SHSupportedVersionsProducer implements HandshakeProducer {
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// Prevent instantiation of this class.
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private SHSupportedVersionsProducer() {
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// blank
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}
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@Override
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public byte[] produce(ConnectionContext context,
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HandshakeMessage message) throws IOException {
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// The producing happens in server side only.
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ServerHandshakeContext shc = (ServerHandshakeContext)context;
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// In response to supported_versions request only
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CHSupportedVersionsSpec svs = (CHSupportedVersionsSpec)
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shc.handshakeExtensions.get(CH_SUPPORTED_VERSIONS);
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if (svs == null) {
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// Unlikely, no key_share extension requested.
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if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) {
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SSLLogger.warning(
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"Ignore unavailable supported_versions extension");
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}
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return null;
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}
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// Is it a supported and enabled extension?
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if (!shc.sslConfig.isAvailable(SH_SUPPORTED_VERSIONS)) {
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if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) {
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SSLLogger.fine(
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"Ignore unavailable extension: " +
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SH_SUPPORTED_VERSIONS.name);
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}
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return null;
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}
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// Produce the extension.
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byte[] extData = new byte[2];
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extData[0] = shc.negotiatedProtocol.major;
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extData[1] = shc.negotiatedProtocol.minor;
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// Update the context.
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shc.handshakeExtensions.put(SH_SUPPORTED_VERSIONS,
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new SHSupportedVersionsSpec(shc.negotiatedProtocol));
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return extData;
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}
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}
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/**
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* Network data consumer of a "supported_versions" extension in ServerHello.
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*/
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private static final
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class SHSupportedVersionsConsumer implements ExtensionConsumer {
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// Prevent instantiation of this class.
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private SHSupportedVersionsConsumer() {
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// blank
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}
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@Override
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public void consume(ConnectionContext context,
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HandshakeMessage message, ByteBuffer buffer) throws IOException {
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// The consuming happens in client side only.
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ClientHandshakeContext chc = (ClientHandshakeContext)context;
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// Is it a supported and enabled extension?
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if (!chc.sslConfig.isAvailable(SH_SUPPORTED_VERSIONS)) {
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if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) {
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SSLLogger.fine(
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"Ignore unavailable extension: " +
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SH_SUPPORTED_VERSIONS.name);
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}
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return; // ignore the extension
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}
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// Parse the extension.
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SHSupportedVersionsSpec spec;
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try {
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spec = new SHSupportedVersionsSpec(buffer);
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} catch (IOException ioe) {
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chc.conContext.fatal(Alert.UNEXPECTED_MESSAGE, ioe);
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return; // fatal() always throws, make the compiler happy.
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}
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// Update the context.
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chc.handshakeExtensions.put(SH_SUPPORTED_VERSIONS, spec);
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// No impact on session resumption.
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//
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// Note that the protocol version negotiation happens before the
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// session resumption negotiation. And the session resumption
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// negotiation depends on the negotiated protocol version.
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}
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}
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/**
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* Network data producer of a "supported_versions" extension in
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* HelloRetryRequest.
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*/
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private static final
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class HRRSupportedVersionsProducer implements HandshakeProducer {
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// Prevent instantiation of this class.
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private HRRSupportedVersionsProducer() {
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// blank
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}
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@Override
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public byte[] produce(ConnectionContext context,
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HandshakeMessage message) throws IOException {
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// The producing happens in server side only.
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ServerHandshakeContext shc = (ServerHandshakeContext)context;
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// Is it a supported and enabled extension?
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if (!shc.sslConfig.isAvailable(HRR_SUPPORTED_VERSIONS)) {
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if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) {
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SSLLogger.fine(
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"Ignore unavailable extension: " +
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HRR_SUPPORTED_VERSIONS.name);
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}
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return null;
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}
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// Produce the extension.
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byte[] extData = new byte[2];
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extData[0] = shc.negotiatedProtocol.major;
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extData[1] = shc.negotiatedProtocol.minor;
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// Update the context.
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shc.handshakeExtensions.put(HRR_SUPPORTED_VERSIONS,
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new SHSupportedVersionsSpec(shc.negotiatedProtocol));
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return extData;
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}
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}
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426 |
|
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427 |
/**
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428 |
* Network data consumer of a "supported_versions" extension in
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* HelloRetryRequest.
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*/
|
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431 |
private static final
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432 |
class HRRSupportedVersionsConsumer implements ExtensionConsumer {
|
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433 |
|
|
434 |
// Prevent instantiation of this class.
|
|
435 |
private HRRSupportedVersionsConsumer() {
|
|
436 |
// blank
|
|
437 |
}
|
|
438 |
|
|
439 |
@Override
|
|
440 |
public void consume(ConnectionContext context,
|
|
441 |
HandshakeMessage message, ByteBuffer buffer) throws IOException {
|
|
442 |
|
|
443 |
// The consuming happens in client side only.
|
|
444 |
ClientHandshakeContext chc = (ClientHandshakeContext)context;
|
|
445 |
|
|
446 |
// Is it a supported and enabled extension?
|
|
447 |
if (!chc.sslConfig.isAvailable(HRR_SUPPORTED_VERSIONS)) {
|
|
448 |
if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) {
|
|
449 |
SSLLogger.fine(
|
|
450 |
"Ignore unavailable extension: " +
|
|
451 |
HRR_SUPPORTED_VERSIONS.name);
|
|
452 |
}
|
|
453 |
return; // ignore the extension
|
|
454 |
}
|
|
455 |
|
|
456 |
// Parse the extension.
|
|
457 |
SHSupportedVersionsSpec spec;
|
|
458 |
try {
|
|
459 |
spec = new SHSupportedVersionsSpec(buffer);
|
|
460 |
} catch (IOException ioe) {
|
|
461 |
chc.conContext.fatal(Alert.UNEXPECTED_MESSAGE, ioe);
|
|
462 |
return; // fatal() always throws, make the compiler happy.
|
|
463 |
}
|
|
464 |
|
|
465 |
// Update the context.
|
|
466 |
chc.handshakeExtensions.put(HRR_SUPPORTED_VERSIONS, spec);
|
|
467 |
|
|
468 |
// No impact on session resumption.
|
|
469 |
//
|
|
470 |
// Note that the protocol version negotiation happens before the
|
|
471 |
// session resumption negotiation. And the session resumption
|
|
472 |
// negotiation depends on the negotiated protocol version.
|
|
473 |
}
|
|
474 |
}
|
|
475 |
|
|
476 |
/**
|
|
477 |
* Network data producer of a "supported_versions" extension for stateless
|
|
478 |
* HelloRetryRequest reconstruction.
|
|
479 |
*/
|
|
480 |
private static final
|
|
481 |
class HRRSupportedVersionsReproducer implements HandshakeProducer {
|
|
482 |
// Prevent instantiation of this class.
|
|
483 |
private HRRSupportedVersionsReproducer() {
|
|
484 |
// blank
|
|
485 |
}
|
|
486 |
|
|
487 |
@Override
|
|
488 |
public byte[] produce(ConnectionContext context,
|
|
489 |
HandshakeMessage message) throws IOException {
|
|
490 |
// The producing happens in server side only.
|
|
491 |
ServerHandshakeContext shc = (ServerHandshakeContext)context;
|
|
492 |
|
|
493 |
// Is it a supported and enabled extension?
|
|
494 |
if (!shc.sslConfig.isAvailable(HRR_SUPPORTED_VERSIONS)) {
|
|
495 |
if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) {
|
|
496 |
SSLLogger.fine(
|
|
497 |
"[Reproduce] Ignore unavailable extension: " +
|
|
498 |
HRR_SUPPORTED_VERSIONS.name);
|
|
499 |
}
|
|
500 |
return null;
|
|
501 |
}
|
|
502 |
|
|
503 |
// Produce the extension.
|
|
504 |
byte[] extData = new byte[2];
|
|
505 |
extData[0] = shc.negotiatedProtocol.major;
|
|
506 |
extData[1] = shc.negotiatedProtocol.minor;
|
|
507 |
|
|
508 |
return extData;
|
|
509 |
}
|
|
510 |
}
|
|
511 |
}
|