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/*
* Copyright (c) 2015, 2024, 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.
*
* 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.
*/
// SunJSSE does not support dynamic system properties, no way to re-use
// system properties in samevm/agentvm mode.
/*
* @test
* @bug 8043758 8307383
* @summary Datagram Transport Layer Security (DTLS)
* @modules java.base/sun.security.util
* @library /test/lib
* @build DTLSOverDatagram
* @run main/othervm InvalidRecords
*/
import java.net.DatagramPacket;
import java.net.SocketAddress;
import java.nio.ByteBuffer;
import java.util.concurrent.atomic.AtomicBoolean;
/**
* Test that if handshake messages are changed, the handshake would fail
* because of handshaking hash verification.
*/
public class InvalidRecords extends DTLSOverDatagram {
private static final AtomicBoolean needInvalidRecords = new AtomicBoolean(true);
public static void main(String[] args) throws Exception {
InvalidRecords testCase = new InvalidRecords();
testCase.runTest(testCase);
if (needInvalidRecords.get()) {
// if this is true, the createHandshakePacket() method
// was NOT called twice to create ClientHello messages
throw new RuntimeException(
"The invalid handshake packet was not"
+ " rejected as it should have been.");
}
}
@Override
DatagramPacket createHandshakePacket(byte[] ba, SocketAddress socketAddr) {
if (needInvalidRecords.get() && (ba.length >= 60) &&
(ba[0x00] == (byte)0x16) && (ba[0x0D] == (byte)0x01) &&
(ba[0x3B] == (byte)0x00) && (ba[0x3C] > 0)) {
// ba[0x00]: record type
// ba[0x0D]: handshake type
// ba[0x3B]: length of session ID
// ba[0x3C]: length of cookie
// ClientHello with cookie
needInvalidRecords.set(false);
System.out.println("invalidate ClientHello message");
// We will alter the compression method field in order to make the cookie
// check fail.
ByteBuffer chRec = ByteBuffer.wrap(ba);
// Skip 59 bytes past the record header (13), the handshake header (12),
// the protocol version (2), and client random (32)
chRec.position(59);
// Jump past the session ID
int len = Byte.toUnsignedInt(chRec.get());
chRec.position(chRec.position() + len);
// Skip the cookie
len = Byte.toUnsignedInt(chRec.get());
chRec.position(chRec.position() + len);
// Skip past cipher suites
len = Short.toUnsignedInt(chRec.getShort());
chRec.position(chRec.position() + len);
// Read the data on the compression methods, should be at least 1
len = Byte.toUnsignedInt(chRec.get());
if (len >= 1) {
System.out.println("Detected compression methods (count = " + len + ")");
} else {
ba[ba.length - 1] = (byte)0xFF;
throw new RuntimeException("Got zero length comp methods");
}
// alter the first comp method.
int compMethodVal = Byte.toUnsignedInt(chRec.get(chRec.position()));
System.out.println("Changing value at position " + chRec.position() +
" from " + compMethodVal + " to " + ++compMethodVal);
chRec.put(chRec.position(), (byte)compMethodVal);
}
return super.createHandshakePacket(ba, socketAddr);
}
}
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