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/*
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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.EOFException;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.nio.ByteBuffer;
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import java.security.GeneralSecurityException;
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import java.util.ArrayList;
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import javax.crypto.BadPaddingException;
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import javax.net.ssl.SSLException;
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import javax.net.ssl.SSLHandshakeException;
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import javax.net.ssl.SSLProtocolException;
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import sun.security.ssl.SSLCipher.SSLReadCipher;
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import sun.security.ssl.KeyUpdate.KeyUpdateMessage;
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import sun.security.ssl.KeyUpdate.KeyUpdateRequest;
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/**
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* {@code InputRecord} implementation for {@code SSLSocket}.
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*
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* @author David Brownell
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*/
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final class SSLSocketInputRecord extends InputRecord implements SSLRecord {
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private InputStream is = null;
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private OutputStream os = null;
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private final byte[] temporary = new byte[1024];
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private boolean formatVerified = false; // SSLv2 ruled out?
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// Cache for incomplete handshake messages.
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private ByteBuffer handshakeBuffer = null;
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private boolean hasHeader = false; // Had read the record header
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SSLSocketInputRecord(HandshakeHash handshakeHash) {
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super(handshakeHash, SSLReadCipher.nullTlsReadCipher());
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}
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@Override
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int bytesInCompletePacket() throws IOException {
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if (!hasHeader) {
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// read exactly one record
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try {
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int really = read(is, temporary, 0, headerSize);
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if (really < 0) {
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// EOF: peer shut down incorrectly
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return -1;
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}
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} catch (EOFException eofe) {
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// The caller will handle EOF.
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return -1;
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}
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hasHeader = true;
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}
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byte byteZero = temporary[0];
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int len = 0;
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/*
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* If we have already verified previous packets, we can
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* ignore the verifications steps, and jump right to the
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* determination. Otherwise, try one last heuristic to
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* see if it's SSL/TLS.
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*/
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if (formatVerified ||
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(byteZero == ContentType.HANDSHAKE.id) ||
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(byteZero == ContentType.ALERT.id)) {
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/*
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* Last sanity check that it's not a wild record
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*/
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if (!ProtocolVersion.isNegotiable(
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temporary[1], temporary[2], false, false)) {
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throw new SSLException("Unrecognized record version " +
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ProtocolVersion.nameOf(temporary[1], temporary[2]) +
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" , plaintext connection?");
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}
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/*
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* Reasonably sure this is a V3, disable further checks.
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* We can't do the same in the v2 check below, because
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* read still needs to parse/handle the v2 clientHello.
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*/
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formatVerified = true;
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/*
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* One of the SSLv3/TLS message types.
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*/
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len = ((temporary[3] & 0xFF) << 8) +
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(temporary[4] & 0xFF) + headerSize;
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} else {
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/*
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* Must be SSLv2 or something unknown.
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* Check if it's short (2 bytes) or
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* long (3) header.
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*
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* Internals can warn about unsupported SSLv2
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*/
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boolean isShort = ((byteZero & 0x80) != 0);
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if (isShort && ((temporary[2] == 1) || (temporary[2] == 4))) {
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if (!ProtocolVersion.isNegotiable(
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temporary[3], temporary[4], false, false)) {
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throw new SSLException("Unrecognized record version " +
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ProtocolVersion.nameOf(temporary[3], temporary[4]) +
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" , plaintext connection?");
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}
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/*
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* Client or Server Hello
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*/
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//
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// Short header is using here. We reverse the code here
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// in case it is used in the future.
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//
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// int mask = (isShort ? 0x7F : 0x3F);
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// len = ((byteZero & mask) << 8) +
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// (temporary[1] & 0xFF) + (isShort ? 2 : 3);
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//
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len = ((byteZero & 0x7F) << 8) + (temporary[1] & 0xFF) + 2;
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} else {
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// Gobblygook!
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throw new SSLException(
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"Unrecognized SSL message, plaintext connection?");
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}
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}
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return len;
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}
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// Note that the input arguments are not used actually.
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@Override
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Plaintext[] decode(ByteBuffer[] srcs, int srcsOffset,
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int srcsLength) throws IOException, BadPaddingException {
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if (isClosed) {
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return null;
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}
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if (!hasHeader) {
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// read exactly one record
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int really = read(is, temporary, 0, headerSize);
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if (really < 0) {
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throw new EOFException("SSL peer shut down incorrectly");
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}
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hasHeader = true;
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}
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Plaintext plaintext = null;
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if (!formatVerified) {
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formatVerified = true;
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/*
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* The first record must either be a handshake record or an
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* alert message. If it's not, it is either invalid or an
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* SSLv2 message.
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*/
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if ((temporary[0] != ContentType.HANDSHAKE.id) &&
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(temporary[0] != ContentType.ALERT.id)) {
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hasHeader = false;
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return handleUnknownRecord(temporary);
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}
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}
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// The record header should has consumed.
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hasHeader = false;
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return decodeInputRecord(temporary);
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}
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@Override
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void setReceiverStream(InputStream inputStream) {
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this.is = inputStream;
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}
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@Override
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void setDeliverStream(OutputStream outputStream) {
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this.os = outputStream;
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30904
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}
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// Note that destination may be null
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private Plaintext[] decodeInputRecord(
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byte[] header) throws IOException, BadPaddingException {
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byte contentType = header[0]; // pos: 0
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byte majorVersion = header[1]; // pos: 1
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byte minorVersion = header[2]; // pos: 2
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int contentLen = ((header[3] & 0xFF) << 8) +
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(header[4] & 0xFF); // pos: 3, 4
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30904
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if (SSLLogger.isOn && SSLLogger.isOn("record")) {
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SSLLogger.fine(
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"READ: " +
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ProtocolVersion.nameOf(majorVersion, minorVersion) +
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" " + ContentType.nameOf(contentType) + ", length = " +
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contentLen);
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}
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//
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// Check for upper bound.
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//
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// Note: May check packetSize limit in the future.
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if (contentLen < 0 || contentLen > maxLargeRecordSize - headerSize) {
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throw new SSLProtocolException(
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"Bad input record size, TLSCiphertext.length = " + contentLen);
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}
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//
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// Read a complete record.
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//
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ByteBuffer destination = ByteBuffer.allocate(headerSize + contentLen);
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30904
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int dstPos = destination.position();
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destination.put(temporary, 0, headerSize);
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while (contentLen > 0) {
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int howmuch = Math.min(temporary.length, contentLen);
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int really = read(is, temporary, 0, howmuch);
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if (really < 0) {
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throw new EOFException("SSL peer shut down incorrectly");
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}
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destination.put(temporary, 0, howmuch);
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contentLen -= howmuch;
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}
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destination.flip();
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destination.position(dstPos + headerSize);
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if (SSLLogger.isOn && SSLLogger.isOn("record")) {
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SSLLogger.fine(
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"READ: " +
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ProtocolVersion.nameOf(majorVersion, minorVersion) +
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" " + ContentType.nameOf(contentType) + ", length = " +
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30904
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destination.remaining());
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}
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257 |
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//
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259 |
// Decrypt the fragment
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//
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50768
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ByteBuffer fragment;
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try {
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Plaintext plaintext =
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readCipher.decrypt(contentType, destination, null);
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fragment = plaintext.fragment;
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contentType = plaintext.contentType;
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} catch (BadPaddingException bpe) {
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throw bpe;
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} catch (GeneralSecurityException gse) {
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270 |
throw (SSLProtocolException)(new SSLProtocolException(
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271 |
"Unexpected exception")).initCause(gse);
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}
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30904
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273 |
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50768
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274 |
if (contentType != ContentType.HANDSHAKE.id &&
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275 |
handshakeBuffer != null && handshakeBuffer.hasRemaining()) {
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30904
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276 |
throw new SSLProtocolException(
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50768
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277 |
"Expecting a handshake fragment, but received " +
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ContentType.nameOf(contentType));
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30904
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279 |
}
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280 |
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//
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50768
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// parse handshake messages
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30904
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283 |
//
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50768
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284 |
if (contentType == ContentType.HANDSHAKE.id) {
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285 |
ByteBuffer handshakeFrag = fragment;
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286 |
if ((handshakeBuffer != null) &&
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287 |
(handshakeBuffer.remaining() != 0)) {
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288 |
ByteBuffer bb = ByteBuffer.wrap(new byte[
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|
289 |
handshakeBuffer.remaining() + fragment.remaining()]);
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290 |
bb.put(handshakeBuffer);
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291 |
bb.put(fragment);
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292 |
handshakeFrag = bb.rewind();
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293 |
handshakeBuffer = null;
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294 |
}
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30904
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295 |
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50768
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296 |
ArrayList<Plaintext> plaintexts = new ArrayList<>(5);
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297 |
while (handshakeFrag.hasRemaining()) {
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298 |
int remaining = handshakeFrag.remaining();
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|
299 |
if (remaining < handshakeHeaderSize) {
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300 |
handshakeBuffer = ByteBuffer.wrap(new byte[remaining]);
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301 |
handshakeBuffer.put(handshakeFrag);
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302 |
handshakeBuffer.rewind();
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303 |
break;
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30904
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304 |
}
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305 |
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50768
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306 |
handshakeFrag.mark();
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|
307 |
// skip the first byte: handshake type
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|
308 |
byte handshakeType = handshakeFrag.get();
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|
309 |
int handshakeBodyLen = Record.getInt24(handshakeFrag);
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310 |
handshakeFrag.reset();
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311 |
int handshakeMessageLen =
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312 |
handshakeHeaderSize + handshakeBodyLen;
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313 |
if (remaining < handshakeMessageLen) {
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|
314 |
handshakeBuffer = ByteBuffer.wrap(new byte[remaining]);
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315 |
handshakeBuffer.put(handshakeFrag);
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|
316 |
handshakeBuffer.rewind();
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|
317 |
break;
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|
318 |
} if (remaining == handshakeMessageLen) {
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|
319 |
if (handshakeHash.isHashable(handshakeType)) {
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|
320 |
handshakeHash.receive(handshakeFrag);
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|
321 |
}
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30904
|
322 |
|
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50768
|
323 |
plaintexts.add(
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|
324 |
new Plaintext(contentType,
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|
325 |
majorVersion, minorVersion, -1, -1L, handshakeFrag)
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|
326 |
);
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|
327 |
break;
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30904
|
328 |
} else {
|
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50768
|
329 |
int fragPos = handshakeFrag.position();
|
|
|
330 |
int fragLim = handshakeFrag.limit();
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|
331 |
int nextPos = fragPos + handshakeMessageLen;
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|
332 |
handshakeFrag.limit(nextPos);
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|
333 |
|
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|
334 |
if (handshakeHash.isHashable(handshakeType)) {
|
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|
335 |
handshakeHash.receive(handshakeFrag);
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30904
|
336 |
}
|
|
|
337 |
|
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50768
|
338 |
plaintexts.add(
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|
339 |
new Plaintext(contentType, majorVersion, minorVersion,
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|
340 |
-1, -1L, handshakeFrag.slice())
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|
341 |
);
|
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30904
|
342 |
|
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50768
|
343 |
handshakeFrag.position(nextPos);
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|
344 |
handshakeFrag.limit(fragLim);
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|
345 |
}
|
|
30904
|
346 |
}
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|
50768
|
347 |
|
|
|
348 |
return plaintexts.toArray(new Plaintext[0]);
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|
30904
|
349 |
}
|
|
|
350 |
|
|
50768
|
351 |
// KeyLimit check during application data.
|
|
|
352 |
// atKeyLimit() inactive when limits not checked, tc set when limits
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|
|
353 |
// are active.
|
|
|
354 |
|
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|
355 |
if (readCipher.atKeyLimit()) {
|
|
|
356 |
if (SSLLogger.isOn && SSLLogger.isOn("ssl")) {
|
|
|
357 |
SSLLogger.fine("KeyUpdate: triggered, read side.");
|
|
|
358 |
}
|
|
|
359 |
|
|
|
360 |
PostHandshakeContext p = new PostHandshakeContext(tc);
|
|
|
361 |
KeyUpdate.handshakeProducer.produce(p,
|
|
|
362 |
new KeyUpdateMessage(p, KeyUpdateRequest.REQUESTED));
|
|
|
363 |
}
|
|
|
364 |
|
|
|
365 |
return new Plaintext[] {
|
|
|
366 |
new Plaintext(contentType,
|
|
|
367 |
majorVersion, minorVersion, -1, -1L, fragment)
|
|
|
368 |
};
|
|
30904
|
369 |
}
|
|
|
370 |
|
|
50768
|
371 |
private Plaintext[] handleUnknownRecord(
|
|
|
372 |
byte[] header) throws IOException, BadPaddingException {
|
|
30904
|
373 |
byte firstByte = header[0];
|
|
|
374 |
byte thirdByte = header[2];
|
|
|
375 |
|
|
|
376 |
// Does it look like a Version 2 client hello (V2ClientHello)?
|
|
|
377 |
if (((firstByte & 0x80) != 0) && (thirdByte == 1)) {
|
|
|
378 |
/*
|
|
|
379 |
* If SSLv2Hello is not enabled, throw an exception.
|
|
|
380 |
*/
|
|
|
381 |
if (helloVersion != ProtocolVersion.SSL20Hello) {
|
|
|
382 |
throw new SSLHandshakeException("SSLv2Hello is not enabled");
|
|
|
383 |
}
|
|
|
384 |
|
|
|
385 |
byte majorVersion = header[3];
|
|
|
386 |
byte minorVersion = header[4];
|
|
|
387 |
|
|
|
388 |
if ((majorVersion == ProtocolVersion.SSL20Hello.major) &&
|
|
|
389 |
(minorVersion == ProtocolVersion.SSL20Hello.minor)) {
|
|
|
390 |
|
|
|
391 |
/*
|
|
|
392 |
* Looks like a V2 client hello, but not one saying
|
|
|
393 |
* "let's talk SSLv3". So we need to send an SSLv2
|
|
|
394 |
* error message, one that's treated as fatal by
|
|
|
395 |
* clients (Otherwise we'll hang.)
|
|
|
396 |
*/
|
|
50768
|
397 |
os.write(SSLRecord.v2NoCipher); // SSLv2Hello
|
|
30904
|
398 |
|
|
50768
|
399 |
if (SSLLogger.isOn) {
|
|
|
400 |
if (SSLLogger.isOn("record")) {
|
|
|
401 |
SSLLogger.fine(
|
|
30904
|
402 |
"Requested to negotiate unsupported SSLv2!");
|
|
|
403 |
}
|
|
|
404 |
|
|
50768
|
405 |
if (SSLLogger.isOn("packet")) {
|
|
|
406 |
SSLLogger.fine("Raw write", SSLRecord.v2NoCipher);
|
|
30904
|
407 |
}
|
|
|
408 |
}
|
|
|
409 |
|
|
|
410 |
throw new SSLException("Unsupported SSL v2.0 ClientHello");
|
|
|
411 |
}
|
|
|
412 |
|
|
|
413 |
int msgLen = ((header[0] & 0x7F) << 8) | (header[1] & 0xFF);
|
|
|
414 |
|
|
50768
|
415 |
ByteBuffer destination = ByteBuffer.allocate(headerSize + msgLen);
|
|
30904
|
416 |
destination.put(temporary, 0, headerSize);
|
|
|
417 |
msgLen -= 3; // had read 3 bytes of content as header
|
|
|
418 |
while (msgLen > 0) {
|
|
|
419 |
int howmuch = Math.min(temporary.length, msgLen);
|
|
|
420 |
int really = read(is, temporary, 0, howmuch);
|
|
|
421 |
if (really < 0) {
|
|
|
422 |
throw new EOFException("SSL peer shut down incorrectly");
|
|
|
423 |
}
|
|
|
424 |
|
|
|
425 |
destination.put(temporary, 0, howmuch);
|
|
|
426 |
msgLen -= howmuch;
|
|
|
427 |
}
|
|
|
428 |
destination.flip();
|
|
|
429 |
|
|
|
430 |
/*
|
|
|
431 |
* If we can map this into a V3 ClientHello, read and
|
|
|
432 |
* hash the rest of the V2 handshake, turn it into a
|
|
|
433 |
* V3 ClientHello message, and pass it up.
|
|
|
434 |
*/
|
|
|
435 |
destination.position(2); // exclude the header
|
|
50768
|
436 |
handshakeHash.receive(destination);
|
|
30904
|
437 |
destination.position(0);
|
|
|
438 |
|
|
|
439 |
ByteBuffer converted = convertToClientHello(destination);
|
|
|
440 |
|
|
50768
|
441 |
if (SSLLogger.isOn && SSLLogger.isOn("packet")) {
|
|
|
442 |
SSLLogger.fine(
|
|
30904
|
443 |
"[Converted] ClientHello", converted);
|
|
|
444 |
}
|
|
|
445 |
|
|
50768
|
446 |
return new Plaintext[] {
|
|
|
447 |
new Plaintext(ContentType.HANDSHAKE.id,
|
|
|
448 |
majorVersion, minorVersion, -1, -1L, converted)
|
|
|
449 |
};
|
|
30904
|
450 |
} else {
|
|
|
451 |
if (((firstByte & 0x80) != 0) && (thirdByte == 4)) {
|
|
|
452 |
throw new SSLException("SSL V2.0 servers are not supported.");
|
|
|
453 |
}
|
|
|
454 |
|
|
|
455 |
throw new SSLException("Unsupported or unrecognized SSL message");
|
|
|
456 |
}
|
|
|
457 |
}
|
|
|
458 |
|
|
|
459 |
// Read the exact bytes of data, otherwise, return -1.
|
|
|
460 |
private static int read(InputStream is,
|
|
|
461 |
byte[] buffer, int offset, int len) throws IOException {
|
|
|
462 |
int n = 0;
|
|
|
463 |
while (n < len) {
|
|
|
464 |
int readLen = is.read(buffer, offset + n, len - n);
|
|
|
465 |
if (readLen < 0) {
|
|
50768
|
466 |
if (SSLLogger.isOn && SSLLogger.isOn("packet")) {
|
|
|
467 |
SSLLogger.fine("Raw read: EOF");
|
|
|
468 |
}
|
|
30904
|
469 |
return -1;
|
|
|
470 |
}
|
|
|
471 |
|
|
50768
|
472 |
if (SSLLogger.isOn && SSLLogger.isOn("packet")) {
|
|
|
473 |
ByteBuffer bb = ByteBuffer.wrap(buffer, offset + n, readLen);
|
|
|
474 |
SSLLogger.fine("Raw read", bb);
|
|
30904
|
475 |
}
|
|
|
476 |
|
|
|
477 |
n += readLen;
|
|
|
478 |
}
|
|
|
479 |
|
|
|
480 |
return n;
|
|
|
481 |
}
|
|
|
482 |
}
|