135 lines
5.5 KiB
Java
135 lines
5.5 KiB
Java
/*
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* Copyright (C) 2015 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;
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import static junit.framework.Assert.assertEquals;
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import android.os.Build;
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import androidx.test.filters.SmallTest;
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import com.android.testutils.DevSdkIgnoreRule;
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import com.android.testutils.DevSdkIgnoreRunner;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import java.math.BigInteger;
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import java.util.TreeSet;
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@RunWith(DevSdkIgnoreRunner.class)
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@SmallTest
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@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
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public class NetworkUtilsTest {
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@Test
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public void testRoutedIPv4AddressCount() {
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final TreeSet<IpPrefix> set = new TreeSet<>(IpPrefix.lengthComparator());
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// No routes routes to no addresses.
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assertEquals(0, NetworkUtils.routedIPv4AddressCount(set));
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set.add(new IpPrefix("0.0.0.0/0"));
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assertEquals(1l << 32, NetworkUtils.routedIPv4AddressCount(set));
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set.add(new IpPrefix("20.18.0.0/16"));
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set.add(new IpPrefix("20.18.0.0/24"));
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set.add(new IpPrefix("20.18.0.0/8"));
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// There is a default route, still covers everything
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assertEquals(1l << 32, NetworkUtils.routedIPv4AddressCount(set));
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set.clear();
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set.add(new IpPrefix("20.18.0.0/24"));
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set.add(new IpPrefix("20.18.0.0/8"));
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// The 8-length includes the 24-length prefix
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assertEquals(1l << 24, NetworkUtils.routedIPv4AddressCount(set));
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set.add(new IpPrefix("10.10.10.126/25"));
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// The 8-length does not include this 25-length prefix
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assertEquals((1l << 24) + (1 << 7), NetworkUtils.routedIPv4AddressCount(set));
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set.clear();
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set.add(new IpPrefix("1.2.3.4/32"));
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set.add(new IpPrefix("1.2.3.4/32"));
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set.add(new IpPrefix("1.2.3.4/32"));
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set.add(new IpPrefix("1.2.3.4/32"));
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assertEquals(1l, NetworkUtils.routedIPv4AddressCount(set));
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set.add(new IpPrefix("1.2.3.5/32"));
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set.add(new IpPrefix("1.2.3.6/32"));
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set.add(new IpPrefix("1.2.3.7/32"));
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set.add(new IpPrefix("1.2.3.8/32"));
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set.add(new IpPrefix("1.2.3.9/32"));
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set.add(new IpPrefix("1.2.3.0/32"));
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assertEquals(7l, NetworkUtils.routedIPv4AddressCount(set));
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// 1.2.3.4/30 eats 1.2.3.{4-7}/32
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set.add(new IpPrefix("1.2.3.4/30"));
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set.add(new IpPrefix("6.2.3.4/28"));
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set.add(new IpPrefix("120.2.3.4/16"));
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assertEquals(7l - 4 + 4 + 16 + 65536, NetworkUtils.routedIPv4AddressCount(set));
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}
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@Test
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public void testRoutedIPv6AddressCount() {
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final TreeSet<IpPrefix> set = new TreeSet<>(IpPrefix.lengthComparator());
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// No routes routes to no addresses.
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assertEquals(BigInteger.ZERO, NetworkUtils.routedIPv6AddressCount(set));
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set.add(new IpPrefix("::/0"));
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assertEquals(BigInteger.ONE.shiftLeft(128), NetworkUtils.routedIPv6AddressCount(set));
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set.add(new IpPrefix("1234:622a::18/64"));
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set.add(new IpPrefix("add4:f00:80:f7:1111::6adb/96"));
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set.add(new IpPrefix("add4:f00:80:f7:1111::6adb/8"));
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// There is a default route, still covers everything
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assertEquals(BigInteger.ONE.shiftLeft(128), NetworkUtils.routedIPv6AddressCount(set));
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set.clear();
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set.add(new IpPrefix("add4:f00:80:f7:1111::6adb/96"));
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set.add(new IpPrefix("add4:f00:80:f7:1111::6adb/8"));
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// The 8-length includes the 96-length prefix
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assertEquals(BigInteger.ONE.shiftLeft(120), NetworkUtils.routedIPv6AddressCount(set));
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set.add(new IpPrefix("10::26/64"));
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// The 8-length does not include this 64-length prefix
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assertEquals(BigInteger.ONE.shiftLeft(120).add(BigInteger.ONE.shiftLeft(64)),
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NetworkUtils.routedIPv6AddressCount(set));
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set.clear();
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set.add(new IpPrefix("add4:f00:80:f7:1111::6ad4/128"));
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set.add(new IpPrefix("add4:f00:80:f7:1111::6ad4/128"));
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set.add(new IpPrefix("add4:f00:80:f7:1111::6ad4/128"));
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set.add(new IpPrefix("add4:f00:80:f7:1111::6ad4/128"));
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assertEquals(BigInteger.ONE, NetworkUtils.routedIPv6AddressCount(set));
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set.add(new IpPrefix("add4:f00:80:f7:1111::6ad5/128"));
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set.add(new IpPrefix("add4:f00:80:f7:1111::6ad6/128"));
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set.add(new IpPrefix("add4:f00:80:f7:1111::6ad7/128"));
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set.add(new IpPrefix("add4:f00:80:f7:1111::6ad8/128"));
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set.add(new IpPrefix("add4:f00:80:f7:1111::6ad9/128"));
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set.add(new IpPrefix("add4:f00:80:f7:1111::6ad0/128"));
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assertEquals(BigInteger.valueOf(7), NetworkUtils.routedIPv6AddressCount(set));
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// add4:f00:80:f7:1111::6ad4/126 eats add4:f00:8[:f7:1111::6ad{4-7}/128
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set.add(new IpPrefix("add4:f00:80:f7:1111::6ad4/126"));
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set.add(new IpPrefix("d00d:f00:80:f7:1111::6ade/124"));
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set.add(new IpPrefix("f00b:a33::/112"));
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assertEquals(BigInteger.valueOf(7l - 4 + 4 + 16 + 65536),
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NetworkUtils.routedIPv6AddressCount(set));
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}
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}
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