93 lines
3.2 KiB
Java
93 lines
3.2 KiB
Java
/*
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* Copyright (c) 2010, 2013, 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 6707289 7107883
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* @summary InterfaceAddress.getNetworkPrefixLength() does not conform to Javadoc
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*/
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import java.net.InetAddress;
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import java.net.Inet4Address;
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import java.net.InterfaceAddress;
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import java.net.NetworkInterface;
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import java.util.Enumeration;
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import static java.lang.System.out;
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public class NetworkPrefixLength {
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static boolean passed = true;
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public static void main(String[] args) throws Exception {
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Enumeration<NetworkInterface> nics = NetworkInterface.getNetworkInterfaces();
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while (nics.hasMoreElements()) {
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NetworkInterface nic = nics.nextElement();
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for (InterfaceAddress iaddr : nic.getInterfaceAddresses()) {
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boolean valid = checkPrefix(iaddr);
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if (!valid) {
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passed = false;
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debug(nic.getName(), iaddr);
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}
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InetAddress ia = iaddr.getAddress();
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if (ia.isLoopbackAddress() && ia instanceof Inet4Address) {
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// assumption: prefix length will always be 8
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if (iaddr.getNetworkPrefixLength() != 8) {
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out.println("Expected prefix of 8, got " + iaddr);
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passed = false;
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}
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}
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}
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}
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if (!passed)
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throw new RuntimeException("Failed: some interfaces have invalid prefix lengths");
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}
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static boolean checkPrefix(InterfaceAddress iaddr) {
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InetAddress addr = iaddr.getAddress();
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if (addr instanceof Inet4Address)
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return checkIPv4PrefixLength(iaddr.getNetworkPrefixLength());
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else
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return checkIPv6PrefixLength(iaddr.getNetworkPrefixLength());
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}
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static boolean checkIPv4PrefixLength(int prefix) {
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if (prefix >=0 && prefix <= 32)
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return true;
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return false;
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}
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static boolean checkIPv6PrefixLength(int prefix) {
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if (prefix >=0 && prefix <= 128)
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return true;
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return false;
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}
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static void debug(String nicName, InterfaceAddress iaddr) {
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out.println("NIC " + nicName + " has an address with an invalid prefix length:\n" + iaddr);
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}
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}
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