1/*
2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24// SunJSSE does not support dynamic system properties, no way to re-use
25// system properties in samevm/agentvm mode.
26
27/*
28 * @test
29 * @bug 8043758
30 * @summary Datagram Transport Layer Security (DTLS)
31 * @modules java.base/sun.security.util
32 * @build DTLSOverDatagram
33 * @run main/othervm InvalidCookie
34 */
35
36import java.net.DatagramPacket;
37import java.net.SocketAddress;
38
39/**
40 * Test that if the handshake cookie in client side is incorrect, the handshake
41 * process can continue as if the client does not use cookie.
42 */
43public class InvalidCookie extends DTLSOverDatagram {
44    boolean needInvalidCookie = true;
45
46    public static void main(String[] args) throws Exception {
47        InvalidCookie testCase = new InvalidCookie();
48        testCase.runTest(testCase);
49    }
50
51    @Override
52    DatagramPacket createHandshakePacket(byte[] ba, SocketAddress socketAddr) {
53        if (needInvalidCookie && (ba.length >= 60) &&
54                (ba[0] == (byte)0x16) && (ba[13] == (byte)0x03)) {
55            // HelloVerifyRequest
56            needInvalidCookie = false;
57            System.out.println("invalidate handshake verify cookie");
58            if (ba[ba.length - 1] == (byte)0xFF) {
59                ba[ba.length - 1] = (byte)0xFE;
60            } else {
61                ba[ba.length - 1] = (byte)0xFF;
62            }
63        }
64
65        return super.createHandshakePacket(ba, socketAddr);
66    }
67}
68