| author | wetmore |
| Fri, 11 May 2018 15:53:12 -0700 | |
| branch | JDK-8145252-TLS13-branch |
| changeset 56542 | 56aaa6cb3693 |
| parent 47216 | 71c04702a3d5 |
| child 56694 | aa54a1f8e426 |
| permissions | -rw-r--r-- |
| 2 | 1 |
/* |
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* Copyright (c) 1996, 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 javax.net.ssl.SSLException; |
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/** |
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* SSL/(D)TLS record. |
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* |
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* This is the base interface, which defines common information and interfaces |
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* used by both Input and Output records. |
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* |
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* @author David Brownell |
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*/ |
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interface Record {
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static final int maxMacSize = 48; // the max supported MAC or |
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// AEAD tag size |
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static final int maxDataSize = 16384; // 2^14 bytes of data |
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static final int maxPadding = 256; // block cipher padding |
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static final int maxIVLength = 16; // the max supported IV length |
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static final int maxFragmentSize = 18432; // the max fragment size |
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// 2^14 + 2048 |
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/* |
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* System property to enable/disable CBC protection in SSL3/TLS1. |
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*/ |
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static final boolean enableCBCProtection = |
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Utilities.getBooleanProperty("jsse.enableCBCProtection", true);
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14004
611031f93e76
7200295: CertificateRequest message is wrapping when using large numbers of Certs
xuelei
parents:
10915
diff
changeset
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/* |
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611031f93e76
7200295: CertificateRequest message is wrapping when using large numbers of Certs
xuelei
parents:
10915
diff
changeset
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* The overflow values of integers of 8, 16 and 24 bits. |
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611031f93e76
7200295: CertificateRequest message is wrapping when using large numbers of Certs
xuelei
parents:
10915
diff
changeset
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*/ |
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static final int OVERFLOW_OF_INT08 = (0x01 << 8); |
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static final int OVERFLOW_OF_INT16 = (0x01 << 16); |
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static final int OVERFLOW_OF_INT24 = (0x01 << 24); |
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/* |
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* Read 8, 16, 24, and 32 bit integer data types, encoded |
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* in standard big-endian form. |
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*/ |
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static int getInt8(ByteBuffer m) throws IOException {
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Record.verifyLength(m, 1); |
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return (m.get() & 0xFF); |
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} |
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static int getInt16(ByteBuffer m) throws IOException {
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Record.verifyLength(m, 2); |
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return ((m.get() & 0xFF) << 8) | |
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(m.get() & 0xFF); |
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} |
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static int getInt24(ByteBuffer m) throws IOException {
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Record.verifyLength(m, 3); |
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return ((m.get() & 0xFF) << 16) | |
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((m.get() & 0xFF) << 8) | |
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(m.get() & 0xFF); |
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} |
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static int getInt32(ByteBuffer m) throws IOException {
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Record.verifyLength(m, 4); |
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return ((m.get() & 0xFF) << 24) | |
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((m.get() & 0xFF) << 16) | |
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((m.get() & 0xFF) << 8) | |
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(m.get() & 0xFF); |
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} |
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/* |
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* Read byte vectors with 8, 16, and 24 bit length encodings. |
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*/ |
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static byte[] getBytes8(ByteBuffer m) throws IOException {
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int len = Record.getInt8(m); |
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Record.verifyLength(m, len); |
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byte[] b = new byte[len]; |
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m.get(b); |
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return b; |
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} |
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static byte[] getBytes16(ByteBuffer m) throws IOException {
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int len = Record.getInt16(m); |
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Record.verifyLength(m, len); |
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byte[] b = new byte[len]; |
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m.get(b); |
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return b; |
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} |
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static byte[] getBytes24(ByteBuffer m) throws IOException {
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int len = Record.getInt24(m); |
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Record.verifyLength(m, len); |
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byte[] b = new byte[len]; |
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m.get(b); |
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return b; |
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} |
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/* |
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* Write 8, 16, 24, and 32 bit integer data types, encoded |
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* in standard big-endian form. |
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*/ |
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static void putInt8(ByteBuffer m, int i) throws IOException {
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Record.verifyLength(m, 1); |
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m.put((byte)(i & 0xFF)); |
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} |
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static void putInt16(ByteBuffer m, int i) throws IOException {
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Record.verifyLength(m, 2); |
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m.put((byte)((i >> 8) & 0xFF)); |
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m.put((byte)(i & 0xFF)); |
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} |
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static void putInt24(ByteBuffer m, int i) throws IOException {
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Record.verifyLength(m, 3); |
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m.put((byte)((i >> 16) & 0xFF)); |
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m.put((byte)((i >> 8) & 0xFF)); |
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m.put((byte)(i & 0xFF)); |
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} |
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static void putInt32(ByteBuffer m, int i) throws IOException {
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m.put((byte)((i >> 24) & 0xFF)); |
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m.put((byte)((i >> 16) & 0xFF)); |
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m.put((byte)((i >> 8) & 0xFF)); |
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m.put((byte)(i & 0xFF)); |
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} |
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/* |
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* Write byte vectors with 8, 16, and 24 bit length encodings. |
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*/ |
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static void putBytes8(ByteBuffer m, byte[] s) throws IOException {
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if (s == null || s.length == 0) {
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Record.verifyLength(m, 1); |
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putInt8(m, 0); |
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} else {
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Record.verifyLength(m, 1 + s.length); |
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putInt8(m, s.length); |
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m.put(s); |
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} |
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} |
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static void putBytes16(ByteBuffer m, byte[] s) throws IOException {
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if (s == null || s.length == 0) {
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Record.verifyLength(m, 2); |
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putInt16(m, 0); |
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} else {
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Record.verifyLength(m, 2 + s.length); |
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putInt16(m, s.length); |
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m.put(s); |
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} |
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} |
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static void putBytes24(ByteBuffer m, byte[] s) throws IOException {
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if (s == null || s.length == 0) {
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Record.verifyLength(m, 3); |
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putInt24(m, 0); |
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} else {
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Record.verifyLength(m, 3 + s.length); |
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putInt24(m, s.length); |
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m.put(s); |
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} |
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} |
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// Verify that the buffer has sufficient remaining. |
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static void verifyLength( |
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ByteBuffer m, int len) throws SSLException {
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if (len > m.remaining()) {
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throw new SSLException("Insufficient space in the buffer, " +
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"may be cause by unexpected end of handshake data."); |
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} |
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} |
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} |