211 lines
9.4 KiB
Java
211 lines
9.4 KiB
Java
/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.net.shared;
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import static android.net.shared.Inet4AddressUtils.getBroadcastAddress;
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import static android.net.shared.Inet4AddressUtils.getImplicitNetmask;
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import static android.net.shared.Inet4AddressUtils.getPrefixMaskAsInet4Address;
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import static android.net.shared.Inet4AddressUtils.inet4AddressToIntHTH;
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import static android.net.shared.Inet4AddressUtils.inet4AddressToIntHTL;
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import static android.net.shared.Inet4AddressUtils.intToInet4AddressHTH;
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import static android.net.shared.Inet4AddressUtils.intToInet4AddressHTL;
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import static android.net.shared.Inet4AddressUtils.netmaskToPrefixLength;
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import static android.net.shared.Inet4AddressUtils.prefixLengthToV4NetmaskIntHTH;
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import static android.net.shared.Inet4AddressUtils.prefixLengthToV4NetmaskIntHTL;
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import static junit.framework.Assert.assertEquals;
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import static org.junit.Assert.fail;
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import android.net.InetAddresses;
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import androidx.test.filters.SmallTest;
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import androidx.test.runner.AndroidJUnit4;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import java.net.Inet4Address;
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@RunWith(AndroidJUnit4.class)
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@SmallTest
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public class Inet4AddressUtilsTest {
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@Test
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public void testInet4AddressToIntHTL() {
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assertEquals(0, inet4AddressToIntHTL(ipv4Address("0.0.0.0")));
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assertEquals(0x000080ff, inet4AddressToIntHTL(ipv4Address("255.128.0.0")));
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assertEquals(0x0080ff0a, inet4AddressToIntHTL(ipv4Address("10.255.128.0")));
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assertEquals(0x00feff0a, inet4AddressToIntHTL(ipv4Address("10.255.254.0")));
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assertEquals(0xfeffa8c0, inet4AddressToIntHTL(ipv4Address("192.168.255.254")));
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assertEquals(0xffffa8c0, inet4AddressToIntHTL(ipv4Address("192.168.255.255")));
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}
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@Test
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public void testIntToInet4AddressHTL() {
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assertEquals(ipv4Address("0.0.0.0"), intToInet4AddressHTL(0));
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assertEquals(ipv4Address("255.128.0.0"), intToInet4AddressHTL(0x000080ff));
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assertEquals(ipv4Address("10.255.128.0"), intToInet4AddressHTL(0x0080ff0a));
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assertEquals(ipv4Address("10.255.254.0"), intToInet4AddressHTL(0x00feff0a));
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assertEquals(ipv4Address("192.168.255.254"), intToInet4AddressHTL(0xfeffa8c0));
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assertEquals(ipv4Address("192.168.255.255"), intToInet4AddressHTL(0xffffa8c0));
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}
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@Test
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public void testInet4AddressToIntHTH() {
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assertEquals(0, inet4AddressToIntHTH(ipv4Address("0.0.0.0")));
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assertEquals(0xff800000, inet4AddressToIntHTH(ipv4Address("255.128.0.0")));
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assertEquals(0x0aff8000, inet4AddressToIntHTH(ipv4Address("10.255.128.0")));
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assertEquals(0x0afffe00, inet4AddressToIntHTH(ipv4Address("10.255.254.0")));
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assertEquals(0xc0a8fffe, inet4AddressToIntHTH(ipv4Address("192.168.255.254")));
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assertEquals(0xc0a8ffff, inet4AddressToIntHTH(ipv4Address("192.168.255.255")));
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}
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@Test
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public void testIntToInet4AddressHTH() {
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assertEquals(ipv4Address("0.0.0.0"), intToInet4AddressHTH(0));
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assertEquals(ipv4Address("255.128.0.0"), intToInet4AddressHTH(0xff800000));
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assertEquals(ipv4Address("10.255.128.0"), intToInet4AddressHTH(0x0aff8000));
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assertEquals(ipv4Address("10.255.254.0"), intToInet4AddressHTH(0x0afffe00));
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assertEquals(ipv4Address("192.168.255.254"), intToInet4AddressHTH(0xc0a8fffe));
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assertEquals(ipv4Address("192.168.255.255"), intToInet4AddressHTH(0xc0a8ffff));
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}
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@Test
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public void testPrefixLengthToV4NetmaskIntHTL() {
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assertEquals(0, prefixLengthToV4NetmaskIntHTL(0));
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assertEquals(0x000080ff /* 255.128.0.0 */, prefixLengthToV4NetmaskIntHTL(9));
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assertEquals(0x0080ffff /* 255.255.128.0 */, prefixLengthToV4NetmaskIntHTL(17));
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assertEquals(0x00feffff /* 255.255.254.0 */, prefixLengthToV4NetmaskIntHTL(23));
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assertEquals(0xfeffffff /* 255.255.255.254 */, prefixLengthToV4NetmaskIntHTL(31));
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assertEquals(0xffffffff /* 255.255.255.255 */, prefixLengthToV4NetmaskIntHTL(32));
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}
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@Test
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public void testPrefixLengthToV4NetmaskIntHTH() {
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assertEquals(0, prefixLengthToV4NetmaskIntHTH(0));
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assertEquals(0xff800000 /* 255.128.0.0 */, prefixLengthToV4NetmaskIntHTH(9));
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assertEquals(0xffff8000 /* 255.255.128.0 */, prefixLengthToV4NetmaskIntHTH(17));
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assertEquals(0xfffffe00 /* 255.255.254.0 */, prefixLengthToV4NetmaskIntHTH(23));
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assertEquals(0xfffffffe /* 255.255.255.254 */, prefixLengthToV4NetmaskIntHTH(31));
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assertEquals(0xffffffff /* 255.255.255.255 */, prefixLengthToV4NetmaskIntHTH(32));
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}
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@Test(expected = IllegalArgumentException.class)
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public void testPrefixLengthToV4NetmaskIntHTH_NegativeLength() {
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prefixLengthToV4NetmaskIntHTH(-1);
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}
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@Test(expected = IllegalArgumentException.class)
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public void testPrefixLengthToV4NetmaskIntHTH_LengthTooLarge() {
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prefixLengthToV4NetmaskIntHTH(33);
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}
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private void checkAddressMasking(String expectedAddr, String addr, int prefixLength) {
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final int prefix = prefixLengthToV4NetmaskIntHTH(prefixLength);
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final int addrInt = inet4AddressToIntHTH(ipv4Address(addr));
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assertEquals(ipv4Address(expectedAddr), intToInet4AddressHTH(prefix & addrInt));
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}
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@Test
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public void testPrefixLengthToV4NetmaskIntHTH_MaskAddr() {
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checkAddressMasking("192.168.0.0", "192.168.128.1", 16);
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checkAddressMasking("255.240.0.0", "255.255.255.255", 12);
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checkAddressMasking("255.255.255.255", "255.255.255.255", 32);
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checkAddressMasking("0.0.0.0", "255.255.255.255", 0);
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}
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@Test
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public void testGetImplicitNetmask() {
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assertEquals(8, getImplicitNetmask(ipv4Address("4.2.2.2")));
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assertEquals(8, getImplicitNetmask(ipv4Address("10.5.6.7")));
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assertEquals(16, getImplicitNetmask(ipv4Address("173.194.72.105")));
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assertEquals(16, getImplicitNetmask(ipv4Address("172.23.68.145")));
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assertEquals(24, getImplicitNetmask(ipv4Address("192.0.2.1")));
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assertEquals(24, getImplicitNetmask(ipv4Address("192.168.5.1")));
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assertEquals(32, getImplicitNetmask(ipv4Address("224.0.0.1")));
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assertEquals(32, getImplicitNetmask(ipv4Address("255.6.7.8")));
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}
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private void assertInvalidNetworkMask(Inet4Address addr) {
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try {
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netmaskToPrefixLength(addr);
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fail("Invalid netmask " + addr.getHostAddress() + " did not cause exception");
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} catch (IllegalArgumentException expected) {
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}
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}
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@Test
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public void testNetmaskToPrefixLength() {
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assertEquals(0, netmaskToPrefixLength(ipv4Address("0.0.0.0")));
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assertEquals(9, netmaskToPrefixLength(ipv4Address("255.128.0.0")));
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assertEquals(17, netmaskToPrefixLength(ipv4Address("255.255.128.0")));
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assertEquals(23, netmaskToPrefixLength(ipv4Address("255.255.254.0")));
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assertEquals(31, netmaskToPrefixLength(ipv4Address("255.255.255.254")));
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assertEquals(32, netmaskToPrefixLength(ipv4Address("255.255.255.255")));
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assertInvalidNetworkMask(ipv4Address("0.0.0.1"));
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assertInvalidNetworkMask(ipv4Address("255.255.255.253"));
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assertInvalidNetworkMask(ipv4Address("255.255.0.255"));
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}
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@Test
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public void testGetPrefixMaskAsAddress() {
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assertEquals("255.255.240.0", getPrefixMaskAsInet4Address(20).getHostAddress());
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assertEquals("255.0.0.0", getPrefixMaskAsInet4Address(8).getHostAddress());
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assertEquals("0.0.0.0", getPrefixMaskAsInet4Address(0).getHostAddress());
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assertEquals("255.255.255.255", getPrefixMaskAsInet4Address(32).getHostAddress());
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}
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@Test
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public void testGetBroadcastAddress() {
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assertEquals("192.168.15.255",
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getBroadcastAddress(ipv4Address("192.168.0.123"), 20).getHostAddress());
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assertEquals("192.255.255.255",
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getBroadcastAddress(ipv4Address("192.168.0.123"), 8).getHostAddress());
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assertEquals("192.168.0.123",
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getBroadcastAddress(ipv4Address("192.168.0.123"), 32).getHostAddress());
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assertEquals("255.255.255.255",
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getBroadcastAddress(ipv4Address("192.168.0.123"), 0).getHostAddress());
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}
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@Test(expected = IllegalArgumentException.class)
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public void testGetBroadcastAddress_PrefixTooLarge() {
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getBroadcastAddress(ipv4Address("192.168.0.123"), 33);
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}
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@Test(expected = IllegalArgumentException.class)
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public void testGetBroadcastAddress_NegativePrefix() {
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getBroadcastAddress(ipv4Address("192.168.0.123"), -1);
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}
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@Test(expected = IllegalArgumentException.class)
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public void testGetPrefixMaskAsAddress_PrefixTooLarge() {
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getPrefixMaskAsInet4Address(33);
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}
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@Test(expected = IllegalArgumentException.class)
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public void testGetPrefixMaskAsAddress_NegativePrefix() {
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getPrefixMaskAsInet4Address(-1);
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}
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private Inet4Address ipv4Address(String addr) {
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return (Inet4Address) InetAddresses.parseNumericAddress(addr);
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}
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}
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