| /* |
| * Copyright (C) 2018 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.dhcp; |
| |
| import static android.net.InetAddresses.parseNumericAddress; |
| import static android.net.NetworkUtils.inet4AddressToIntHTH; |
| import static android.net.dhcp.DhcpServingParams.MTU_UNSET; |
| |
| import static junit.framework.Assert.assertEquals; |
| import static junit.framework.Assert.assertFalse; |
| import static junit.framework.Assert.assertTrue; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.net.LinkAddress; |
| import android.net.NetworkUtils; |
| import android.net.dhcp.DhcpServingParams.InvalidParameterException; |
| import android.support.test.filters.SmallTest; |
| import android.support.test.runner.AndroidJUnit4; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.lang.reflect.Modifier; |
| import java.net.Inet4Address; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| @RunWith(AndroidJUnit4.class) |
| @SmallTest |
| public class DhcpServingParamsTest { |
| @NonNull |
| private DhcpServingParams.Builder mBuilder; |
| |
| private static final Set<Inet4Address> TEST_DEFAULT_ROUTERS = new HashSet<>( |
| Arrays.asList(parseAddr("192.168.0.123"), parseAddr("192.168.0.124"))); |
| private static final long TEST_LEASE_TIME_SECS = 3600L; |
| private static final Set<Inet4Address> TEST_DNS_SERVERS = new HashSet<>( |
| Arrays.asList(parseAddr("192.168.0.126"), parseAddr("192.168.0.127"))); |
| private static final Inet4Address TEST_SERVER_ADDR = parseAddr("192.168.0.2"); |
| private static final LinkAddress TEST_LINKADDR = new LinkAddress(TEST_SERVER_ADDR, 20); |
| private static final int TEST_MTU = 1500; |
| private static final Set<Inet4Address> TEST_EXCLUDED_ADDRS = new HashSet<>( |
| Arrays.asList(parseAddr("192.168.0.200"), parseAddr("192.168.0.201"))); |
| private static final boolean TEST_METERED = true; |
| |
| @Before |
| public void setUp() { |
| mBuilder = new DhcpServingParams.Builder() |
| .setDefaultRouters(TEST_DEFAULT_ROUTERS) |
| .setDhcpLeaseTimeSecs(TEST_LEASE_TIME_SECS) |
| .setDnsServers(TEST_DNS_SERVERS) |
| .setServerAddr(TEST_LINKADDR) |
| .setLinkMtu(TEST_MTU) |
| .setExcludedAddrs(TEST_EXCLUDED_ADDRS) |
| .setMetered(TEST_METERED); |
| } |
| |
| @Test |
| public void testBuild_Immutable() throws InvalidParameterException { |
| final Set<Inet4Address> routers = new HashSet<>(TEST_DEFAULT_ROUTERS); |
| final Set<Inet4Address> dnsServers = new HashSet<>(TEST_DNS_SERVERS); |
| final Set<Inet4Address> excludedAddrs = new HashSet<>(TEST_EXCLUDED_ADDRS); |
| |
| final DhcpServingParams params = mBuilder |
| .setDefaultRouters(routers) |
| .setDnsServers(dnsServers) |
| .setExcludedAddrs(excludedAddrs) |
| .build(); |
| |
| // Modifications to source objects should not affect builder or final parameters |
| final Inet4Address addedAddr = parseAddr("192.168.0.223"); |
| routers.add(addedAddr); |
| dnsServers.add(addedAddr); |
| excludedAddrs.add(addedAddr); |
| |
| assertEquals(TEST_DEFAULT_ROUTERS, params.defaultRouters); |
| assertEquals(TEST_LEASE_TIME_SECS, params.dhcpLeaseTimeSecs); |
| assertEquals(TEST_DNS_SERVERS, params.dnsServers); |
| assertEquals(TEST_LINKADDR, params.serverAddr); |
| assertEquals(TEST_MTU, params.linkMtu); |
| assertEquals(TEST_METERED, params.metered); |
| |
| assertContains(params.excludedAddrs, TEST_EXCLUDED_ADDRS); |
| assertContains(params.excludedAddrs, TEST_DEFAULT_ROUTERS); |
| assertContains(params.excludedAddrs, TEST_DNS_SERVERS); |
| assertContains(params.excludedAddrs, TEST_SERVER_ADDR); |
| |
| assertFalse("excludedAddrs should not contain " + addedAddr, |
| params.excludedAddrs.contains(addedAddr)); |
| } |
| |
| @Test(expected = InvalidParameterException.class) |
| public void testBuild_NegativeLeaseTime() throws InvalidParameterException { |
| mBuilder.setDhcpLeaseTimeSecs(-1).build(); |
| } |
| |
| @Test(expected = InvalidParameterException.class) |
| public void testBuild_LeaseTimeTooLarge() throws InvalidParameterException { |
| // Set lease time larger than max value for uint32 |
| mBuilder.setDhcpLeaseTimeSecs(1L << 32).build(); |
| } |
| |
| @Test |
| public void testBuild_InfiniteLeaseTime() throws InvalidParameterException { |
| final long infiniteLeaseTime = 0xffffffffL; |
| final DhcpServingParams params = mBuilder |
| .setDhcpLeaseTimeSecs(infiniteLeaseTime).build(); |
| assertEquals(infiniteLeaseTime, params.dhcpLeaseTimeSecs); |
| assertTrue(params.dhcpLeaseTimeSecs > 0L); |
| } |
| |
| @Test |
| public void testBuild_UnsetMtu() throws InvalidParameterException { |
| final DhcpServingParams params = mBuilder.setLinkMtu(MTU_UNSET).build(); |
| assertEquals(MTU_UNSET, params.linkMtu); |
| } |
| |
| @Test(expected = InvalidParameterException.class) |
| public void testBuild_MtuTooSmall() throws InvalidParameterException { |
| mBuilder.setLinkMtu(20).build(); |
| } |
| |
| @Test(expected = InvalidParameterException.class) |
| public void testBuild_MtuTooLarge() throws InvalidParameterException { |
| mBuilder.setLinkMtu(65_536).build(); |
| } |
| |
| @Test(expected = InvalidParameterException.class) |
| public void testBuild_IPv6Addr() throws InvalidParameterException { |
| mBuilder.setServerAddr(new LinkAddress(parseNumericAddress("fe80::1111"), 120)).build(); |
| } |
| |
| @Test(expected = InvalidParameterException.class) |
| public void testBuild_PrefixTooLarge() throws InvalidParameterException { |
| mBuilder.setServerAddr(new LinkAddress(TEST_SERVER_ADDR, 15)).build(); |
| } |
| |
| @Test(expected = InvalidParameterException.class) |
| public void testBuild_PrefixTooSmall() throws InvalidParameterException { |
| mBuilder.setDefaultRouters(parseAddr("192.168.0.254")) |
| .setServerAddr(new LinkAddress(TEST_SERVER_ADDR, 31)) |
| .build(); |
| } |
| |
| @Test(expected = InvalidParameterException.class) |
| public void testBuild_RouterNotInPrefix() throws InvalidParameterException { |
| mBuilder.setDefaultRouters(parseAddr("192.168.254.254")).build(); |
| } |
| |
| @Test |
| public void testFromParcelableObject() throws InvalidParameterException { |
| final DhcpServingParams params = mBuilder.build(); |
| final DhcpServingParamsParcel parcel = new DhcpServingParamsParcel(); |
| parcel.defaultRouters = toIntArray(TEST_DEFAULT_ROUTERS); |
| parcel.dhcpLeaseTimeSecs = TEST_LEASE_TIME_SECS; |
| parcel.dnsServers = toIntArray(TEST_DNS_SERVERS); |
| parcel.serverAddr = inet4AddressToIntHTH(TEST_SERVER_ADDR); |
| parcel.serverAddrPrefixLength = TEST_LINKADDR.getPrefixLength(); |
| parcel.linkMtu = TEST_MTU; |
| parcel.excludedAddrs = toIntArray(TEST_EXCLUDED_ADDRS); |
| parcel.metered = TEST_METERED; |
| final DhcpServingParams parceled = DhcpServingParams.fromParcelableObject(parcel); |
| |
| assertEquals(params.defaultRouters, parceled.defaultRouters); |
| assertEquals(params.dhcpLeaseTimeSecs, parceled.dhcpLeaseTimeSecs); |
| assertEquals(params.dnsServers, parceled.dnsServers); |
| assertEquals(params.serverAddr, parceled.serverAddr); |
| assertEquals(params.linkMtu, parceled.linkMtu); |
| assertEquals(params.excludedAddrs, parceled.excludedAddrs); |
| assertEquals(params.metered, parceled.metered); |
| |
| // Ensure that we do not miss any field if added in the future |
| final long numFields = Arrays.stream(DhcpServingParams.class.getDeclaredFields()) |
| .filter(f -> !Modifier.isStatic(f.getModifiers())) |
| .count(); |
| assertEquals(7, numFields); |
| } |
| |
| @Test(expected = InvalidParameterException.class) |
| public void testFromParcelableObject_NullArgument() throws InvalidParameterException { |
| DhcpServingParams.fromParcelableObject(null); |
| } |
| |
| private static int[] toIntArray(Collection<Inet4Address> addrs) { |
| return addrs.stream().mapToInt(NetworkUtils::inet4AddressToIntHTH).toArray(); |
| } |
| |
| private static <T> void assertContains(@NonNull Set<T> set, @NonNull Set<T> subset) { |
| for (final T elem : subset) { |
| assertContains(set, elem); |
| } |
| } |
| |
| private static <T> void assertContains(@NonNull Set<T> set, @Nullable T elem) { |
| assertTrue("Set does not contain " + elem, set.contains(elem)); |
| } |
| |
| @NonNull |
| private static Inet4Address parseAddr(@NonNull String inet4Addr) { |
| return (Inet4Address) parseNumericAddress(inet4Addr); |
| } |
| } |