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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.net.module.util;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import android.annotation.SuppressLint;
import android.net.InetAddresses;
import android.net.IpPrefix;
import androidx.test.filters.SmallTest;
import androidx.test.runner.AndroidJUnit4;
import org.junit.Test;
import org.junit.runner.RunWith;
import java.net.Inet4Address;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.util.ArrayList;
import java.util.List;
@RunWith(AndroidJUnit4.class)
@SmallTest
public class IpRangeTest {
private static InetAddress address(String addr) {
return InetAddresses.parseNumericAddress(addr);
}
private static final Inet4Address IPV4_ADDR = (Inet4Address) address("192.0.2.4");
private static final Inet4Address IPV4_RANGE_END = (Inet4Address) address("192.0.3.1");
private static final Inet6Address IPV6_ADDR = (Inet6Address) address("2001:db8::");
private static final Inet6Address IPV6_RANGE_END = (Inet6Address) address("2001:db9:010f::");
private static final byte[] IPV4_BYTES = IPV4_ADDR.getAddress();
private static final byte[] IPV6_BYTES = IPV6_ADDR.getAddress();
@Test
public void testConstructorBadArguments() {
try {
new IpRange(null, IPV6_ADDR);
fail("Expected NullPointerException: null start address");
} catch (NullPointerException expected) {
}
try {
new IpRange(IPV6_ADDR, null);
fail("Expected NullPointerException: null end address");
} catch (NullPointerException expected) {
}
try {
new IpRange(null, null);
fail("Expected NullPointerException: null addresses");
} catch (NullPointerException expected) {
}
try {
new IpRange(null);
fail("Expected NullPointerException: null start address");
} catch (NullPointerException expected) {
}
try {
new IpRange(address("10.10.10.10"), address("1.2.3.4"));
fail("Expected IllegalArgumentException: start address after end address");
} catch (IllegalArgumentException expected) {
}
try {
new IpRange(address("ffff::"), address("abcd::"));
fail("Expected IllegalArgumentException: start address after end address");
} catch (IllegalArgumentException expected) {
}
}
@SuppressLint("NewApi")
@Test
public void testConstructor() {
IpRange r = new IpRange(new IpPrefix(IPV4_ADDR, 32));
assertEquals(IPV4_ADDR, r.getStartAddr());
assertEquals(IPV4_ADDR, r.getEndAddr());
r = new IpRange(new IpPrefix(IPV4_ADDR, 16));
assertEquals(address("192.0.0.0"), r.getStartAddr());
assertEquals(address("192.0.255.255"), r.getEndAddr());
r = new IpRange(IPV4_ADDR, IPV4_RANGE_END);
assertEquals(IPV4_ADDR, r.getStartAddr());
assertEquals(IPV4_RANGE_END, r.getEndAddr());
r = new IpRange(new IpPrefix(IPV6_ADDR, 128));
assertEquals(IPV6_ADDR, r.getStartAddr());
assertEquals(IPV6_ADDR, r.getEndAddr());
r = new IpRange(new IpPrefix(IPV6_ADDR, 16));
assertEquals(address("2001::"), r.getStartAddr());
assertEquals(address("2001:ffff:ffff:ffff:ffff:ffff:ffff:ffff"), r.getEndAddr());
r = new IpRange(IPV6_ADDR, IPV6_RANGE_END);
assertEquals(IPV6_ADDR, r.getStartAddr());
assertEquals(IPV6_RANGE_END, r.getEndAddr());
}
@SuppressLint("NewApi")
@Test
public void testContainsRangeEqualRanges() {
final IpRange r1 = new IpRange(new IpPrefix(IPV6_ADDR, 35));
final IpRange r2 = new IpRange(new IpPrefix(IPV6_ADDR, 35));
assertTrue(r1.containsRange(r2));
assertTrue(r2.containsRange(r1));
assertEquals(r1, r2);
}
@SuppressLint("NewApi")
@Test
public void testContainsRangeSubset() {
final IpRange r1 = new IpRange(new IpPrefix(IPV6_ADDR, 64));
final IpRange r2 = new IpRange(new IpPrefix(address("2001:db8::0101"), 128));
assertTrue(r1.containsRange(r2));
assertFalse(r2.containsRange(r1));
assertNotEquals(r1, r2);
}
@SuppressLint("NewApi")
@Test
public void testContainsRangeTruncatesLowerOrderBits() {
final IpRange r1 = new IpRange(new IpPrefix(IPV6_ADDR, 100));
final IpRange r2 = new IpRange(new IpPrefix(address("2001:db8::0101"), 100));
assertTrue(r1.containsRange(r2));
assertTrue(r2.containsRange(r1));
assertEquals(r1, r2);
}
@SuppressLint("NewApi")
@Test
public void testContainsRangeSubsetSameStartAddr() {
final IpRange r1 = new IpRange(new IpPrefix(IPV6_ADDR, 35));
final IpRange r2 = new IpRange(new IpPrefix(IPV6_ADDR, 39));
assertTrue(r1.containsRange(r2));
assertFalse(r2.containsRange(r1));
assertNotEquals(r1, r2);
}
@SuppressLint("NewApi")
@Test
public void testContainsRangeOverlapping() {
final IpRange r1 = new IpRange(new IpPrefix(address("2001:db9::"), 32));
final IpRange r2 = new IpRange(address("2001:db8::"), address("2001:db9::1"));
assertFalse(r1.containsRange(r2));
assertFalse(r2.containsRange(r1));
assertNotEquals(r1, r2);
}
@SuppressLint("NewApi")
@Test
public void testOverlapsRangeEqualRanges() {
final IpRange r1 = new IpRange(new IpPrefix(IPV6_ADDR, 35));
final IpRange r2 = new IpRange(new IpPrefix(IPV6_ADDR, 35));
assertTrue(r1.overlapsRange(r2));
assertTrue(r2.overlapsRange(r1));
assertEquals(r1, r2);
}
@SuppressLint("NewApi")
@Test
public void testOverlapsRangeSubset() {
final IpRange r1 = new IpRange(new IpPrefix(IPV6_ADDR, 35));
final IpRange r2 = new IpRange(new IpPrefix(IPV6_ADDR, 39));
assertTrue(r1.overlapsRange(r2));
assertTrue(r2.overlapsRange(r1));
assertNotEquals(r1, r2);
}
@SuppressLint("NewApi")
@Test
public void testOverlapsRangeDisjoint() {
final IpRange r1 = new IpRange(new IpPrefix(IPV6_ADDR, 32));
final IpRange r2 = new IpRange(new IpPrefix(address("2001:db9::"), 32));
assertFalse(r1.overlapsRange(r2));
assertFalse(r2.overlapsRange(r1));
assertNotEquals(r1, r2);
}
@SuppressLint("NewApi")
@Test
public void testOverlapsRangePartialOverlapLow() {
final IpRange r1 = new IpRange(new IpPrefix(address("2001:db9::"), 32));
final IpRange r2 = new IpRange(address("2001:db8::"), address("2001:db9::1"));
assertTrue(r1.overlapsRange(r2));
assertTrue(r2.overlapsRange(r1));
assertNotEquals(r1, r2);
}
@SuppressLint("NewApi")
@Test
public void testOverlapsRangePartialOverlapHigh() {
final IpRange r1 = new IpRange(new IpPrefix(address("2001:db7::"), 32));
final IpRange r2 = new IpRange(address("2001:db7::ffff"), address("2001:db8::"));
assertTrue(r1.overlapsRange(r2));
assertTrue(r2.overlapsRange(r1));
assertNotEquals(r1, r2);
}
@Test
public void testIpRangeToPrefixesIpv4FullRange() throws Exception {
final IpRange range = new IpRange(address("0.0.0.0"), address("255.255.255.255"));
final List<IpPrefix> prefixes = new ArrayList<>();
prefixes.add(new IpPrefix("0.0.0.0/0"));
assertEquals(prefixes, range.asIpPrefixes());
}
@Test
public void testIpRangeToPrefixesIpv4() throws Exception {
final IpRange range = new IpRange(IPV4_ADDR, IPV4_RANGE_END);
final List<IpPrefix> prefixes = new ArrayList<>();
prefixes.add(new IpPrefix("192.0.2.128/25"));
prefixes.add(new IpPrefix("192.0.2.64/26"));
prefixes.add(new IpPrefix("192.0.2.32/27"));
prefixes.add(new IpPrefix("192.0.2.16/28"));
prefixes.add(new IpPrefix("192.0.2.8/29"));
prefixes.add(new IpPrefix("192.0.2.4/30"));
prefixes.add(new IpPrefix("192.0.3.0/31"));
assertEquals(prefixes, range.asIpPrefixes());
}
@Test
public void testIpRangeToPrefixesIpv6FullRange() throws Exception {
final IpRange range =
new IpRange(address("::"), address("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"));
final List<IpPrefix> prefixes = new ArrayList<>();
prefixes.add(new IpPrefix("::/0"));
assertEquals(prefixes, range.asIpPrefixes());
}
@Test
public void testIpRangeToPrefixesIpv6() throws Exception {
final IpRange range = new IpRange(IPV6_ADDR, IPV6_RANGE_END);
final List<IpPrefix> prefixes = new ArrayList<>();
prefixes.add(new IpPrefix("2001:db8::/32"));
prefixes.add(new IpPrefix("2001:db9::/40"));
prefixes.add(new IpPrefix("2001:db9:100::/45"));
prefixes.add(new IpPrefix("2001:db9:108::/46"));
prefixes.add(new IpPrefix("2001:db9:10c::/47"));
prefixes.add(new IpPrefix("2001:db9:10e::/48"));
prefixes.add(new IpPrefix("2001:db9:10f::/128"));
assertEquals(prefixes, range.asIpPrefixes());
}
}
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