author | ascarpino |
Wed, 08 Feb 2017 12:08:28 -0800 | |
changeset 43701 | fe8c324ba97c |
parent 37880 | 60ec48925dc6 |
permissions | -rw-r--r-- |
30904 | 1 |
/* |
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* Copyright (c) 1996, 2014, 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.*; |
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import java.nio.*; |
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import javax.crypto.BadPaddingException; |
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import javax.net.ssl.*; |
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34687
d302ed125dc9
8144995: Move sun.misc.HexDumpEncoder to sun.security.util
chegar
parents:
30904
diff
changeset
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import sun.security.util.HexDumpEncoder; |
30904 | 36 |
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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 OutputStream deliverStream = null; |
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private byte[] temporary = new byte[1024]; |
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// used by handshake hash computation for handshake fragment |
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private byte prevType = -1; |
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private int hsMsgOff = 0; |
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private int hsMsgLen = 0; |
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private boolean formatVerified = false; // SSLv2 ruled out? |
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private boolean hasHeader = false; // Had read the record header |
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SSLSocketInputRecord() { |
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this.readAuthenticator = MAC.TLS_NULL; |
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} |
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@Override |
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int bytesInCompletePacket(InputStream is) throws IOException { |
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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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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 hueristic 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 == ct_handshake) || (byteZero == ct_alert)) { |
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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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ProtocolVersion recordVersion = |
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ProtocolVersion.valueOf(temporary[1], temporary[2]); |
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// check the record version |
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checkRecordVersion(recordVersion, false); |
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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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ProtocolVersion recordVersion = |
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ProtocolVersion.valueOf(temporary[3], temporary[4]); |
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// check the record version |
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checkRecordVersion(recordVersion, true); |
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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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37880 | 126 |
// in case it is used in the future. |
30904 | 127 |
// |
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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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// destination.position() is zero. |
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@Override |
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Plaintext decode(InputStream is, ByteBuffer destination) |
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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] != ct_handshake) && |
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(temporary[0] != ct_alert)) { |
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plaintext = handleUnknownRecord(is, temporary, destination); |
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} |
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} |
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if (plaintext == null) { |
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plaintext = decodeInputRecord(is, temporary, destination); |
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} |
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// The record header should has comsumed. |
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hasHeader = false; |
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return plaintext; |
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} |
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@Override |
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void setDeliverStream(OutputStream outputStream) { |
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this.deliverStream = outputStream; |
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} |
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// Note that destination may be null |
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private Plaintext decodeInputRecord(InputStream is, byte[] header, |
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ByteBuffer destination) throws IOException, BadPaddingException { |
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byte contentType = header[0]; |
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byte majorVersion = header[1]; |
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byte minorVersion = header[2]; |
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int contentLen = ((header[3] & 0xFF) << 8) + (header[4] & 0xFF); |
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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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if (destination == null) { |
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destination = ByteBuffer.allocate(headerSize + contentLen); |
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} // Otherwise, the destination buffer should have enough room. |
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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 (debug != null && Debug.isOn("record")) { |
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System.out.println(Thread.currentThread().getName() + |
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", READ: " + |
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ProtocolVersion.valueOf(majorVersion, minorVersion) + |
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" " + Record.contentName(contentType) + ", length = " + |
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destination.remaining()); |
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} |
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// |
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// Decrypt the fragment |
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// |
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ByteBuffer plaintext = |
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decrypt(readAuthenticator, readCipher, contentType, destination); |
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if ((contentType != ct_handshake) && (hsMsgOff != hsMsgLen)) { |
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throw new SSLProtocolException( |
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"Expected to get a handshake fragment"); |
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} |
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// |
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// handshake hashing |
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// |
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if (contentType == ct_handshake) { |
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int pltPos = plaintext.position(); |
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int pltLim = plaintext.limit(); |
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int frgPos = pltPos; |
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for (int remains = plaintext.remaining(); remains > 0;) { |
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int howmuch; |
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byte handshakeType; |
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if (hsMsgOff < hsMsgLen) { |
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// a fragment of the handshake message |
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howmuch = Math.min((hsMsgLen - hsMsgOff), remains); |
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handshakeType = prevType; |
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hsMsgOff += howmuch; |
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if (hsMsgOff == hsMsgLen) { |
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// Now is a complete handshake message. |
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hsMsgOff = 0; |
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hsMsgLen = 0; |
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} |
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} else { // hsMsgOff == hsMsgLen, a new handshake message |
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handshakeType = plaintext.get(); |
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int handshakeLen = ((plaintext.get() & 0xFF) << 16) | |
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((plaintext.get() & 0xFF) << 8) | |
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(plaintext.get() & 0xFF); |
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plaintext.position(frgPos); |
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if (remains < (handshakeLen + 1)) { // 1: handshake type |
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// This handshake message is fragmented. |
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prevType = handshakeType; |
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hsMsgOff = remains - 4; // 4: handshake header |
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hsMsgLen = handshakeLen; |
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} |
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howmuch = Math.min(handshakeLen + 4, remains); |
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} |
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plaintext.limit(frgPos + howmuch); |
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if (handshakeType == HandshakeMessage.ht_hello_request) { |
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// omitted from handshake hash computation |
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} else if ((handshakeType != HandshakeMessage.ht_finished) && |
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(handshakeType != HandshakeMessage.ht_certificate_verify)) { |
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if (handshakeHash == null) { |
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// used for cache only |
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handshakeHash = new HandshakeHash(false); |
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} |
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handshakeHash.update(plaintext); |
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} else { |
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// Reserve until this handshake message has been processed. |
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if (handshakeHash == null) { |
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// used for cache only |
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handshakeHash = new HandshakeHash(false); |
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} |
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handshakeHash.reserve(plaintext); |
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} |
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308 |
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plaintext.position(frgPos + howmuch); |
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plaintext.limit(pltLim); |
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311 |
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312 |
frgPos += howmuch; |
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remains -= howmuch; |
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} |
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plaintext.position(pltPos); |
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} |
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317 |
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318 |
return new Plaintext(contentType, |
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majorVersion, minorVersion, -1, -1L, plaintext); |
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// recordEpoch, recordSeq, plaintext); |
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} |
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322 |
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323 |
private Plaintext handleUnknownRecord(InputStream is, byte[] header, |
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324 |
ByteBuffer destination) throws IOException, BadPaddingException { |
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325 |
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326 |
byte firstByte = header[0]; |
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327 |
byte thirdByte = header[2]; |
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328 |
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329 |
// Does it look like a Version 2 client hello (V2ClientHello)? |
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330 |
if (((firstByte & 0x80) != 0) && (thirdByte == 1)) { |
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331 |
/* |
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332 |
* If SSLv2Hello is not enabled, throw an exception. |
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333 |
*/ |
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334 |
if (helloVersion != ProtocolVersion.SSL20Hello) { |
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335 |
throw new SSLHandshakeException("SSLv2Hello is not enabled"); |
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336 |
} |
|
337 |
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338 |
byte majorVersion = header[3]; |
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339 |
byte minorVersion = header[4]; |
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340 |
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341 |
if ((majorVersion == ProtocolVersion.SSL20Hello.major) && |
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342 |
(minorVersion == ProtocolVersion.SSL20Hello.minor)) { |
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343 |
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344 |
/* |
|
345 |
* Looks like a V2 client hello, but not one saying |
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346 |
* "let's talk SSLv3". So we need to send an SSLv2 |
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347 |
* error message, one that's treated as fatal by |
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348 |
* clients (Otherwise we'll hang.) |
|
349 |
*/ |
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350 |
deliverStream.write(SSLRecord.v2NoCipher); // SSLv2Hello |
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351 |
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352 |
if (debug != null) { |
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353 |
if (Debug.isOn("record")) { |
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354 |
System.out.println(Thread.currentThread().getName() + |
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355 |
"Requested to negotiate unsupported SSLv2!"); |
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356 |
} |
|
357 |
||
358 |
if (Debug.isOn("packet")) { |
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359 |
Debug.printHex( |
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360 |
"[Raw write]: length = " + |
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361 |
SSLRecord.v2NoCipher.length, |
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362 |
SSLRecord.v2NoCipher); |
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363 |
} |
|
364 |
} |
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365 |
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366 |
throw new SSLException("Unsupported SSL v2.0 ClientHello"); |
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367 |
} |
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368 |
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369 |
int msgLen = ((header[0] & 0x7F) << 8) | (header[1] & 0xFF); |
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370 |
||
371 |
if (destination == null) { |
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372 |
destination = ByteBuffer.allocate(headerSize + msgLen); |
|
373 |
} |
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374 |
destination.put(temporary, 0, headerSize); |
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375 |
msgLen -= 3; // had read 3 bytes of content as header |
|
376 |
while (msgLen > 0) { |
|
377 |
int howmuch = Math.min(temporary.length, msgLen); |
|
378 |
int really = read(is, temporary, 0, howmuch); |
|
379 |
if (really < 0) { |
|
380 |
throw new EOFException("SSL peer shut down incorrectly"); |
|
381 |
} |
|
382 |
||
383 |
destination.put(temporary, 0, howmuch); |
|
384 |
msgLen -= howmuch; |
|
385 |
} |
|
386 |
destination.flip(); |
|
387 |
||
388 |
/* |
|
389 |
* If we can map this into a V3 ClientHello, read and |
|
390 |
* hash the rest of the V2 handshake, turn it into a |
|
391 |
* V3 ClientHello message, and pass it up. |
|
392 |
*/ |
|
393 |
destination.position(2); // exclude the header |
|
394 |
||
395 |
if (handshakeHash == null) { |
|
396 |
// used for cache only |
|
397 |
handshakeHash = new HandshakeHash(false); |
|
398 |
} |
|
399 |
handshakeHash.update(destination); |
|
400 |
destination.position(0); |
|
401 |
||
402 |
ByteBuffer converted = convertToClientHello(destination); |
|
403 |
||
404 |
if (debug != null && Debug.isOn("packet")) { |
|
405 |
Debug.printHex( |
|
406 |
"[Converted] ClientHello", converted); |
|
407 |
} |
|
408 |
||
409 |
return new Plaintext(ct_handshake, |
|
410 |
majorVersion, minorVersion, -1, -1L, converted); |
|
411 |
} else { |
|
412 |
if (((firstByte & 0x80) != 0) && (thirdByte == 4)) { |
|
413 |
throw new SSLException("SSL V2.0 servers are not supported."); |
|
414 |
} |
|
415 |
||
416 |
throw new SSLException("Unsupported or unrecognized SSL message"); |
|
417 |
} |
|
418 |
} |
|
419 |
||
420 |
// Read the exact bytes of data, otherwise, return -1. |
|
421 |
private static int read(InputStream is, |
|
422 |
byte[] buffer, int offset, int len) throws IOException { |
|
423 |
int n = 0; |
|
424 |
while (n < len) { |
|
425 |
int readLen = is.read(buffer, offset + n, len - n); |
|
426 |
if (readLen < 0) { |
|
427 |
return -1; |
|
428 |
} |
|
429 |
||
430 |
if (debug != null && Debug.isOn("packet")) { |
|
431 |
Debug.printHex( |
|
432 |
"[Raw read]: length = " + readLen, |
|
433 |
buffer, offset + n, readLen); |
|
434 |
} |
|
435 |
||
436 |
n += readLen; |
|
437 |
} |
|
438 |
||
439 |
return n; |
|
440 |
} |
|
441 |
} |