mirror of
https://github.com/openjdk/jdk.git
synced 2025-08-28 15:24:43 +02:00
292 lines
10 KiB
Java
292 lines
10 KiB
Java
/*
|
|
* Copyright (c) 2015, 2020, 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.text.MessageFormat;
|
|
import java.util.Locale;
|
|
import javax.net.ssl.SSLProtocolException;
|
|
import static sun.security.ssl.SSLExtension.CH_EC_POINT_FORMATS;
|
|
import sun.security.ssl.SSLExtension.ExtensionConsumer;
|
|
import sun.security.ssl.SSLExtension.SSLExtensionSpec;
|
|
import sun.security.ssl.SSLHandshake.HandshakeMessage;
|
|
import sun.security.ssl.NamedGroup.NamedGroupSpec;
|
|
|
|
/**
|
|
* Pack of the "ec_point_formats" extensions [RFC 4492].
|
|
*/
|
|
final class ECPointFormatsExtension {
|
|
static final HandshakeProducer chNetworkProducer =
|
|
new CHECPointFormatsProducer();
|
|
static final ExtensionConsumer chOnLoadConsumer =
|
|
new CHECPointFormatsConsumer();
|
|
|
|
static final ExtensionConsumer shOnLoadConsumer =
|
|
new SHECPointFormatsConsumer();
|
|
|
|
static final SSLStringizer epfStringizer =
|
|
new ECPointFormatsStringizer();
|
|
|
|
/**
|
|
* The "ec_point_formats" extension.
|
|
*/
|
|
static class ECPointFormatsSpec implements SSLExtensionSpec {
|
|
static final ECPointFormatsSpec DEFAULT =
|
|
new ECPointFormatsSpec(new byte[] {ECPointFormat.UNCOMPRESSED.id});
|
|
|
|
final byte[] formats;
|
|
|
|
ECPointFormatsSpec(byte[] formats) {
|
|
this.formats = formats;
|
|
}
|
|
|
|
private ECPointFormatsSpec(HandshakeContext hc,
|
|
ByteBuffer m) throws IOException {
|
|
if (!m.hasRemaining()) {
|
|
throw hc.conContext.fatal(Alert.DECODE_ERROR,
|
|
new SSLProtocolException(
|
|
"Invalid ec_point_formats extension: " +
|
|
"insufficient data"));
|
|
}
|
|
|
|
this.formats = Record.getBytes8(m);
|
|
}
|
|
|
|
private boolean hasUncompressedFormat() {
|
|
for (byte format : formats) {
|
|
if (format == ECPointFormat.UNCOMPRESSED.id) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
@Override
|
|
public String toString() {
|
|
MessageFormat messageFormat = new MessageFormat(
|
|
"\"formats\": '['{0}']'", Locale.ENGLISH);
|
|
if (formats == null || formats.length == 0) {
|
|
Object[] messageFields = {
|
|
"<no EC point format specified>"
|
|
};
|
|
return messageFormat.format(messageFields);
|
|
} else {
|
|
StringBuilder builder = new StringBuilder(512);
|
|
boolean isFirst = true;
|
|
for (byte pf : formats) {
|
|
if (isFirst) {
|
|
isFirst = false;
|
|
} else {
|
|
builder.append(", ");
|
|
}
|
|
|
|
builder.append(ECPointFormat.nameOf(pf));
|
|
}
|
|
|
|
Object[] messageFields = {
|
|
builder.toString()
|
|
};
|
|
|
|
return messageFormat.format(messageFields);
|
|
}
|
|
}
|
|
}
|
|
|
|
private static final class ECPointFormatsStringizer implements SSLStringizer {
|
|
@Override
|
|
public String toString(HandshakeContext hc, ByteBuffer buffer) {
|
|
try {
|
|
return (new ECPointFormatsSpec(hc, buffer)).toString();
|
|
} catch (IOException ioe) {
|
|
// For debug logging only, so please swallow exceptions.
|
|
return ioe.getMessage();
|
|
}
|
|
}
|
|
}
|
|
|
|
private static enum ECPointFormat {
|
|
UNCOMPRESSED ((byte)0, "uncompressed"),
|
|
ANSIX962_COMPRESSED_PRIME ((byte)1, "ansiX962_compressed_prime"),
|
|
FMT_ANSIX962_COMPRESSED_CHAR2 ((byte)2, "ansiX962_compressed_char2");
|
|
|
|
final byte id;
|
|
final String name;
|
|
|
|
private ECPointFormat(byte id, String name) {
|
|
this.id = id;
|
|
this.name = name;
|
|
}
|
|
|
|
static String nameOf(int id) {
|
|
for (ECPointFormat pf: ECPointFormat.values()) {
|
|
if (pf.id == id) {
|
|
return pf.name;
|
|
}
|
|
}
|
|
return "UNDEFINED-EC-POINT-FORMAT(" + id + ")";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Network data producer of a "ec_point_formats" extension in
|
|
* the ClientHello handshake message.
|
|
*/
|
|
private static final
|
|
class CHECPointFormatsProducer implements HandshakeProducer {
|
|
// Prevent instantiation of this class.
|
|
private CHECPointFormatsProducer() {
|
|
// blank
|
|
}
|
|
|
|
@Override
|
|
public byte[] produce(ConnectionContext context,
|
|
HandshakeMessage message) throws IOException {
|
|
// The producing happens in client side only.
|
|
ClientHandshakeContext chc = (ClientHandshakeContext)context;
|
|
|
|
// Is it a supported and enabled extension?
|
|
if (!chc.sslConfig.isAvailable(CH_EC_POINT_FORMATS)) {
|
|
if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) {
|
|
SSLLogger.fine(
|
|
"Ignore unavailable ec_point_formats extension");
|
|
}
|
|
return null;
|
|
}
|
|
|
|
// Produce the extension.
|
|
//
|
|
// produce the extension only if EC cipher suite is activated.
|
|
if (NamedGroupSpec.NAMED_GROUP_ECDHE.isSupported(
|
|
chc.activeCipherSuites)) {
|
|
// We are using uncompressed ECPointFormat only at present.
|
|
byte[] extData = new byte[] {0x01, 0x00};
|
|
|
|
// Update the context.
|
|
chc.handshakeExtensions.put(
|
|
CH_EC_POINT_FORMATS, ECPointFormatsSpec.DEFAULT);
|
|
|
|
return extData;
|
|
}
|
|
|
|
if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) {
|
|
SSLLogger.fine(
|
|
"Need no ec_point_formats extension");
|
|
}
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Network data consumer of a "ec_point_formats" extension in
|
|
* the ClientHello handshake message.
|
|
*/
|
|
private static final
|
|
class CHECPointFormatsConsumer implements ExtensionConsumer {
|
|
// Prevent instantiation of this class.
|
|
private CHECPointFormatsConsumer() {
|
|
// blank
|
|
}
|
|
|
|
@Override
|
|
public void consume(ConnectionContext context,
|
|
HandshakeMessage message, ByteBuffer buffer) throws IOException {
|
|
|
|
// The consuming happens in server side only.
|
|
ServerHandshakeContext shc = (ServerHandshakeContext)context;
|
|
|
|
// Is it a supported and enabled extension?
|
|
if (!shc.sslConfig.isAvailable(CH_EC_POINT_FORMATS)) {
|
|
if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) {
|
|
SSLLogger.fine(
|
|
"Ignore unavailable ec_point_formats extension");
|
|
}
|
|
return; // ignore the extension
|
|
}
|
|
|
|
// Parse the extension.
|
|
ECPointFormatsSpec spec = new ECPointFormatsSpec(shc, buffer);
|
|
|
|
// per RFC 4492, uncompressed points must always be supported.
|
|
if (!spec.hasUncompressedFormat()) {
|
|
throw shc.conContext.fatal(Alert.UNEXPECTED_MESSAGE,
|
|
"Invalid ec_point_formats extension data: " +
|
|
"peer does not support uncompressed points");
|
|
}
|
|
|
|
// Update the context.
|
|
shc.handshakeExtensions.put(CH_EC_POINT_FORMATS, spec);
|
|
|
|
// No impact on session resumption, as only uncompressed points
|
|
// are supported at present.
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Network data consumer of a "ec_point_formats" extension in
|
|
* the ServerHello handshake message.
|
|
*/
|
|
private static final
|
|
class SHECPointFormatsConsumer implements ExtensionConsumer {
|
|
// Prevent instantiation of this class.
|
|
private SHECPointFormatsConsumer() {
|
|
// blank
|
|
}
|
|
|
|
@Override
|
|
public void consume(ConnectionContext context,
|
|
HandshakeMessage message, ByteBuffer buffer) throws IOException {
|
|
|
|
// The consuming happens in client side only.
|
|
ClientHandshakeContext chc = (ClientHandshakeContext)context;
|
|
|
|
// In response to "ec_point_formats" extension request only
|
|
ECPointFormatsSpec requestedSpec = (ECPointFormatsSpec)
|
|
chc.handshakeExtensions.get(CH_EC_POINT_FORMATS);
|
|
if (requestedSpec == null) {
|
|
throw chc.conContext.fatal(Alert.UNEXPECTED_MESSAGE,
|
|
"Unexpected ec_point_formats extension in ServerHello");
|
|
}
|
|
|
|
// Parse the extension.
|
|
ECPointFormatsSpec spec = new ECPointFormatsSpec(chc, buffer);
|
|
|
|
// per RFC 4492, uncompressed points must always be supported.
|
|
if (!spec.hasUncompressedFormat()) {
|
|
throw chc.conContext.fatal(Alert.UNEXPECTED_MESSAGE,
|
|
"Invalid ec_point_formats extension data: " +
|
|
"peer does not support uncompressed points");
|
|
}
|
|
|
|
// Update the context.
|
|
chc.handshakeExtensions.put(CH_EC_POINT_FORMATS, spec);
|
|
|
|
// No impact on session resumption, as only uncompressed points
|
|
// are supported at present.
|
|
}
|
|
}
|
|
}
|