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Diffstat (limited to 'tests/common/java/android/net/IpPrefixTest.java')
-rw-r--r--tests/common/java/android/net/IpPrefixTest.java374
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diff --git a/tests/common/java/android/net/IpPrefixTest.java b/tests/common/java/android/net/IpPrefixTest.java
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+++ b/tests/common/java/android/net/IpPrefixTest.java
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+/*
+ * Copyright (C) 2014 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 android.net;
+
+import static com.android.testutils.MiscAsserts.assertEqualBothWays;
+import static com.android.testutils.MiscAsserts.assertFieldCountEquals;
+import static com.android.testutils.MiscAsserts.assertNotEqualEitherWay;
+import static com.android.testutils.ParcelUtils.assertParcelingIsLossless;
+
+import static org.junit.Assert.assertArrayEquals;
+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 androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.net.InetAddress;
+import java.util.Random;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class IpPrefixTest {
+
+ private static InetAddress address(String addr) {
+ return InetAddress.parseNumericAddress(addr);
+ }
+
+ // Explicitly cast everything to byte because "error: possible loss of precision".
+ private static final byte[] IPV4_BYTES = { (byte) 192, (byte) 0, (byte) 2, (byte) 4};
+ private static final byte[] IPV6_BYTES = {
+ (byte) 0x20, (byte) 0x01, (byte) 0x0d, (byte) 0xb8,
+ (byte) 0xde, (byte) 0xad, (byte) 0xbe, (byte) 0xef,
+ (byte) 0x0f, (byte) 0x00, (byte) 0x00, (byte) 0x00,
+ (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0xa0
+ };
+
+ @Test
+ public void testConstructor() {
+ IpPrefix p;
+ try {
+ p = new IpPrefix((byte[]) null, 9);
+ fail("Expected NullPointerException: null byte array");
+ } catch (RuntimeException expected) { }
+
+ try {
+ p = new IpPrefix((InetAddress) null, 10);
+ fail("Expected NullPointerException: null InetAddress");
+ } catch (RuntimeException expected) { }
+
+ try {
+ p = new IpPrefix((String) null);
+ fail("Expected NullPointerException: null String");
+ } catch (RuntimeException expected) { }
+
+
+ try {
+ byte[] b2 = {1, 2, 3, 4, 5};
+ p = new IpPrefix(b2, 29);
+ fail("Expected IllegalArgumentException: invalid array length");
+ } catch (IllegalArgumentException expected) { }
+
+ try {
+ p = new IpPrefix("1.2.3.4");
+ fail("Expected IllegalArgumentException: no prefix length");
+ } catch (IllegalArgumentException expected) { }
+
+ try {
+ p = new IpPrefix("1.2.3.4/");
+ fail("Expected IllegalArgumentException: empty prefix length");
+ } catch (IllegalArgumentException expected) { }
+
+ try {
+ p = new IpPrefix("foo/32");
+ fail("Expected IllegalArgumentException: invalid address");
+ } catch (IllegalArgumentException expected) { }
+
+ try {
+ p = new IpPrefix("1/32");
+ fail("Expected IllegalArgumentException: deprecated IPv4 format");
+ } catch (IllegalArgumentException expected) { }
+
+ try {
+ p = new IpPrefix("1.2.3.256/32");
+ fail("Expected IllegalArgumentException: invalid IPv4 address");
+ } catch (IllegalArgumentException expected) { }
+
+ try {
+ p = new IpPrefix("foo/32");
+ fail("Expected IllegalArgumentException: non-address");
+ } catch (IllegalArgumentException expected) { }
+
+ try {
+ p = new IpPrefix("f00:::/32");
+ fail("Expected IllegalArgumentException: invalid IPv6 address");
+ } catch (IllegalArgumentException expected) { }
+
+ p = new IpPrefix("/64");
+ assertEquals("::/64", p.toString());
+
+ p = new IpPrefix("/128");
+ assertEquals("::1/128", p.toString());
+
+ p = new IpPrefix("[2001:db8::123]/64");
+ assertEquals("2001:db8::/64", p.toString());
+ }
+
+ @Test
+ public void testTruncation() {
+ IpPrefix p;
+
+ p = new IpPrefix(IPV4_BYTES, 32);
+ assertEquals("192.0.2.4/32", p.toString());
+
+ p = new IpPrefix(IPV4_BYTES, 29);
+ assertEquals("192.0.2.0/29", p.toString());
+
+ p = new IpPrefix(IPV4_BYTES, 8);
+ assertEquals("192.0.0.0/8", p.toString());
+
+ p = new IpPrefix(IPV4_BYTES, 0);
+ assertEquals("0.0.0.0/0", p.toString());
+
+ try {
+ p = new IpPrefix(IPV4_BYTES, 33);
+ fail("Expected IllegalArgumentException: invalid prefix length");
+ } catch (RuntimeException expected) { }
+
+ try {
+ p = new IpPrefix(IPV4_BYTES, 128);
+ fail("Expected IllegalArgumentException: invalid prefix length");
+ } catch (RuntimeException expected) { }
+
+ try {
+ p = new IpPrefix(IPV4_BYTES, -1);
+ fail("Expected IllegalArgumentException: negative prefix length");
+ } catch (RuntimeException expected) { }
+
+ p = new IpPrefix(IPV6_BYTES, 128);
+ assertEquals("2001:db8:dead:beef:f00::a0/128", p.toString());
+
+ p = new IpPrefix(IPV6_BYTES, 122);
+ assertEquals("2001:db8:dead:beef:f00::80/122", p.toString());
+
+ p = new IpPrefix(IPV6_BYTES, 64);
+ assertEquals("2001:db8:dead:beef::/64", p.toString());
+
+ p = new IpPrefix(IPV6_BYTES, 3);
+ assertEquals("2000::/3", p.toString());
+
+ p = new IpPrefix(IPV6_BYTES, 0);
+ assertEquals("::/0", p.toString());
+
+ try {
+ p = new IpPrefix(IPV6_BYTES, -1);
+ fail("Expected IllegalArgumentException: negative prefix length");
+ } catch (RuntimeException expected) { }
+
+ try {
+ p = new IpPrefix(IPV6_BYTES, 129);
+ fail("Expected IllegalArgumentException: negative prefix length");
+ } catch (RuntimeException expected) { }
+
+ }
+
+ @Test
+ public void testEquals() {
+ IpPrefix p1, p2;
+
+ p1 = new IpPrefix("192.0.2.251/23");
+ p2 = new IpPrefix(new byte[]{(byte) 192, (byte) 0, (byte) 2, (byte) 251}, 23);
+ assertEqualBothWays(p1, p2);
+
+ p1 = new IpPrefix("192.0.2.5/23");
+ assertEqualBothWays(p1, p2);
+
+ p1 = new IpPrefix("192.0.2.5/24");
+ assertNotEqualEitherWay(p1, p2);
+
+ p1 = new IpPrefix("192.0.4.5/23");
+ assertNotEqualEitherWay(p1, p2);
+
+
+ p1 = new IpPrefix("2001:db8:dead:beef:f00::80/122");
+ p2 = new IpPrefix(IPV6_BYTES, 122);
+ assertEquals("2001:db8:dead:beef:f00::80/122", p2.toString());
+ assertEqualBothWays(p1, p2);
+
+ p1 = new IpPrefix("2001:db8:dead:beef:f00::bf/122");
+ assertEqualBothWays(p1, p2);
+
+ p1 = new IpPrefix("2001:db8:dead:beef:f00::8:0/123");
+ assertNotEqualEitherWay(p1, p2);
+
+ p1 = new IpPrefix("2001:db8:dead:beef::/122");
+ assertNotEqualEitherWay(p1, p2);
+
+ // 192.0.2.4/32 != c000:0204::/32.
+ byte[] ipv6bytes = new byte[16];
+ System.arraycopy(IPV4_BYTES, 0, ipv6bytes, 0, IPV4_BYTES.length);
+ p1 = new IpPrefix(ipv6bytes, 32);
+ assertEqualBothWays(p1, new IpPrefix("c000:0204::/32"));
+
+ p2 = new IpPrefix(IPV4_BYTES, 32);
+ assertNotEqualEitherWay(p1, p2);
+ }
+
+ @Test
+ public void testContainsInetAddress() {
+ IpPrefix p = new IpPrefix("2001:db8:f00::ace:d00d/127");
+ assertTrue(p.contains(address("2001:db8:f00::ace:d00c")));
+ assertTrue(p.contains(address("2001:db8:f00::ace:d00d")));
+ assertFalse(p.contains(address("2001:db8:f00::ace:d00e")));
+ assertFalse(p.contains(address("2001:db8:f00::bad:d00d")));
+ assertFalse(p.contains(address("2001:4868:4860::8888")));
+ assertFalse(p.contains(address("8.8.8.8")));
+
+ p = new IpPrefix("192.0.2.0/23");
+ assertTrue(p.contains(address("192.0.2.43")));
+ assertTrue(p.contains(address("192.0.3.21")));
+ assertFalse(p.contains(address("192.0.0.21")));
+ assertFalse(p.contains(address("8.8.8.8")));
+ assertFalse(p.contains(address("2001:4868:4860::8888")));
+
+ IpPrefix ipv6Default = new IpPrefix("::/0");
+ assertTrue(ipv6Default.contains(address("2001:db8::f00")));
+ assertFalse(ipv6Default.contains(address("192.0.2.1")));
+
+ IpPrefix ipv4Default = new IpPrefix("0.0.0.0/0");
+ assertTrue(ipv4Default.contains(address("255.255.255.255")));
+ assertTrue(ipv4Default.contains(address("192.0.2.1")));
+ assertFalse(ipv4Default.contains(address("2001:db8::f00")));
+ }
+
+ @Test
+ public void testContainsIpPrefix() {
+ assertTrue(new IpPrefix("0.0.0.0/0").containsPrefix(new IpPrefix("0.0.0.0/0")));
+ assertTrue(new IpPrefix("0.0.0.0/0").containsPrefix(new IpPrefix("1.2.3.4/0")));
+ assertTrue(new IpPrefix("0.0.0.0/0").containsPrefix(new IpPrefix("1.2.3.4/8")));
+ assertTrue(new IpPrefix("0.0.0.0/0").containsPrefix(new IpPrefix("1.2.3.4/24")));
+ assertTrue(new IpPrefix("0.0.0.0/0").containsPrefix(new IpPrefix("1.2.3.4/23")));
+
+ assertTrue(new IpPrefix("1.2.3.4/8").containsPrefix(new IpPrefix("1.2.3.4/8")));
+ assertTrue(new IpPrefix("1.2.3.4/8").containsPrefix(new IpPrefix("1.254.12.9/8")));
+ assertTrue(new IpPrefix("1.2.3.4/21").containsPrefix(new IpPrefix("1.2.3.4/21")));
+ assertTrue(new IpPrefix("1.2.3.4/32").containsPrefix(new IpPrefix("1.2.3.4/32")));
+
+ assertTrue(new IpPrefix("1.2.3.4/20").containsPrefix(new IpPrefix("1.2.3.0/24")));
+
+ assertFalse(new IpPrefix("1.2.3.4/32").containsPrefix(new IpPrefix("1.2.3.5/32")));
+ assertFalse(new IpPrefix("1.2.3.4/8").containsPrefix(new IpPrefix("2.2.3.4/8")));
+ assertFalse(new IpPrefix("0.0.0.0/16").containsPrefix(new IpPrefix("0.0.0.0/15")));
+ assertFalse(new IpPrefix("100.0.0.0/8").containsPrefix(new IpPrefix("99.0.0.0/8")));
+
+ assertTrue(new IpPrefix("::/0").containsPrefix(new IpPrefix("::/0")));
+ assertTrue(new IpPrefix("::/0").containsPrefix(new IpPrefix("2001:db8::f00/1")));
+ assertTrue(new IpPrefix("::/0").containsPrefix(new IpPrefix("3d8a:661:a0::770/8")));
+ assertTrue(new IpPrefix("::/0").containsPrefix(new IpPrefix("2001:db8::f00/8")));
+ assertTrue(new IpPrefix("::/0").containsPrefix(new IpPrefix("2001:db8::f00/64")));
+ assertTrue(new IpPrefix("::/0").containsPrefix(new IpPrefix("2001:db8::f00/113")));
+ assertTrue(new IpPrefix("::/0").containsPrefix(new IpPrefix("2001:db8::f00/128")));
+
+ assertTrue(new IpPrefix("2001:db8:f00::ace:d00d/64").containsPrefix(
+ new IpPrefix("2001:db8:f00::ace:d00d/64")));
+ assertTrue(new IpPrefix("2001:db8:f00::ace:d00d/64").containsPrefix(
+ new IpPrefix("2001:db8:f00::ace:d00d/120")));
+ assertFalse(new IpPrefix("2001:db8:f00::ace:d00d/64").containsPrefix(
+ new IpPrefix("2001:db8:f00::ace:d00d/32")));
+ assertFalse(new IpPrefix("2001:db8:f00::ace:d00d/64").containsPrefix(
+ new IpPrefix("2006:db8:f00::ace:d00d/96")));
+
+ assertTrue(new IpPrefix("2001:db8:f00::ace:d00d/128").containsPrefix(
+ new IpPrefix("2001:db8:f00::ace:d00d/128")));
+ assertTrue(new IpPrefix("2001:db8:f00::ace:d00d/100").containsPrefix(
+ new IpPrefix("2001:db8:f00::ace:ccaf/110")));
+
+ assertFalse(new IpPrefix("2001:db8:f00::ace:d00d/128").containsPrefix(
+ new IpPrefix("2001:db8:f00::ace:d00e/128")));
+ assertFalse(new IpPrefix("::/30").containsPrefix(new IpPrefix("::/29")));
+ }
+
+ @Test
+ public void testHashCode() {
+ IpPrefix p = new IpPrefix(new byte[4], 0);
+ Random random = new Random();
+ for (int i = 0; i < 100; i++) {
+ final IpPrefix oldP = p;
+ if (random.nextBoolean()) {
+ // IPv4.
+ byte[] b = new byte[4];
+ random.nextBytes(b);
+ p = new IpPrefix(b, random.nextInt(33));
+ } else {
+ // IPv6.
+ byte[] b = new byte[16];
+ random.nextBytes(b);
+ p = new IpPrefix(b, random.nextInt(129));
+ }
+ if (p.equals(oldP)) {
+ assertEquals(p.hashCode(), oldP.hashCode());
+ }
+ if (p.hashCode() != oldP.hashCode()) {
+ assertNotEquals(p, oldP);
+ }
+ }
+ }
+
+ @Test
+ public void testHashCodeIsNotConstant() {
+ IpPrefix[] prefixes = {
+ new IpPrefix("2001:db8:f00::ace:d00d/127"),
+ new IpPrefix("192.0.2.0/23"),
+ new IpPrefix("::/0"),
+ new IpPrefix("0.0.0.0/0"),
+ };
+ for (int i = 0; i < prefixes.length; i++) {
+ for (int j = i + 1; j < prefixes.length; j++) {
+ assertNotEquals(prefixes[i].hashCode(), prefixes[j].hashCode());
+ }
+ }
+ }
+
+ @Test
+ public void testMappedAddressesAreBroken() {
+ // 192.0.2.0/24 != ::ffff:c000:0204/120, but because we use InetAddress,
+ // we are unable to comprehend that.
+ byte[] ipv6bytes = {
+ (byte) 0, (byte) 0, (byte) 0, (byte) 0,
+ (byte) 0, (byte) 0, (byte) 0, (byte) 0,
+ (byte) 0, (byte) 0, (byte) 0xff, (byte) 0xff,
+ (byte) 192, (byte) 0, (byte) 2, (byte) 0};
+ IpPrefix p = new IpPrefix(ipv6bytes, 120);
+ assertEquals(16, p.getRawAddress().length); // Fine.
+ assertArrayEquals(ipv6bytes, p.getRawAddress()); // Fine.
+
+ // Broken.
+ assertEquals("192.0.2.0/120", p.toString());
+ assertEquals(InetAddress.parseNumericAddress("192.0.2.0"), p.getAddress());
+ }
+
+ @Test
+ public void testParceling() {
+ IpPrefix p;
+
+ p = new IpPrefix("2001:4860:db8::/64");
+ assertParcelingIsLossless(p);
+ assertTrue(p.isIPv6());
+
+ p = new IpPrefix("192.0.2.0/25");
+ assertParcelingIsLossless(p);
+ assertTrue(p.isIPv4());
+
+ assertFieldCountEquals(2, IpPrefix.class);
+ }
+}
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