121 lines
4.3 KiB
Java
121 lines
4.3 KiB
Java
/*
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* Copyright (c) 2008, 2022, 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.
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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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/* @test
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* @bug 6628576
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* @modules java.base/java.net:open
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* @summary InterfaceAddress.equals() NPE when broadcast field == null
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*/
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import java.net.InterfaceAddress;
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import java.net.InetAddress;
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import java.net.UnknownHostException;
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import java.lang.reflect.Constructor;
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import java.lang.reflect.Field;
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import java.lang.reflect.InvocationTargetException;
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public class Equals
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{
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public static void main(String[] args) {
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InterfaceAddress ia1;
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InterfaceAddress ia2;
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InetAddress loopbackAddr = InetAddress.getLoopbackAddress();
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InetAddress broadcast1 = null;
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InetAddress broadcast2 = null;
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try {
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broadcast1 = InetAddress.getByName("255.255.255.0");
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broadcast2 = InetAddress.getByName("255.255.0.0");
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} catch (UnknownHostException e) {
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e.printStackTrace();
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}
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ia1 = createInterfaceAddress(loopbackAddr, (InetAddress) null, (short)45);
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ia2 = createInterfaceAddress(loopbackAddr, (InetAddress) null, (short)45);
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compare(ia1, ia2, true);
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ia2 = createInterfaceAddress(loopbackAddr, broadcast1, (short)45);
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compare(ia1, ia2, false);
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ia2 = createInterfaceAddress((InetAddress)null, broadcast1, (short)45);
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compare(ia1, ia2, false);
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ia1 = createInterfaceAddress(loopbackAddr, broadcast2, (short)45);
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ia2 = createInterfaceAddress(loopbackAddr, broadcast2, (short)45);
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compare(ia1, ia2, true);
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ia1.equals(null);
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}
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static void compare(InterfaceAddress ia1, InterfaceAddress ia2, boolean equal) {
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if (ia1.equals(ia2) != equal)
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throw new RuntimeException("Failed: " + ia1 + " not equals to " + ia2);
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if (ia2.equals(ia1) != equal)
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throw new RuntimeException("Failed: " + ia2 + " not equals to " + ia1);
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}
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/**
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* Returns an InterfaceAddress instance with its fields set to the values
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* specificed.
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*/
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static InterfaceAddress createInterfaceAddress(
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InetAddress address, InetAddress broadcast, short prefixlength) {
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try {
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Class<InterfaceAddress> IAClass = InterfaceAddress.class;
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InterfaceAddress ia;
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Constructor<InterfaceAddress> ctr = IAClass.getDeclaredConstructor();
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ctr.setAccessible(true);
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Field addressField = IAClass.getDeclaredField("address");
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addressField.setAccessible(true);
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Field broadcastField = IAClass.getDeclaredField("broadcast");
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broadcastField.setAccessible(true);
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Field maskLengthField = IAClass.getDeclaredField("maskLength");
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maskLengthField.setAccessible(true);
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ia = ctr.newInstance();
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addressField.set(ia, address);
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broadcastField.set(ia, broadcast);
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maskLengthField.setShort(ia, prefixlength);
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return ia;
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} catch (NoSuchFieldException nsfe) {
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nsfe.printStackTrace();
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} catch (NoSuchMethodException e) {
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e.printStackTrace();
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} catch (InstantiationException ie) {
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ie.printStackTrace();
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} catch (IllegalAccessException iae) {
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iae.printStackTrace();
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} catch (InvocationTargetException ite) {
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ite.printStackTrace();
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}
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return null;
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}
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}
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