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Commit 6e833f27 authored by Hugo Benichi's avatar Hugo Benichi
Browse files

Add convenience methods to IpPrefix and LinkAddress 

Also moving relevant test files into tests/net as part of runtest
framworks-net.

Also removes testHashCode in LinkAddress() because this test relies on
the assumption that hashCode() is stable across releases or jdk
versions, which is absolutely not true.

This creates maintenance work for little benefit since hashCode is
already tested as part of the equality test.

For instance this test is now broken because hashing for InetAddress
changed.

Bug: 62988545
Bug: 62918393
Test: runtest frameworks-net, added coverage in tests
Merged-In: I695bc3f0e801bf13bc4fc0706565758f12b775b4
Merged-In: I6d3f3c50eaec44e3a0787e849ab28e89f6f4a72d
Merged-In: Iddfec82a08f845e728adadfa6ec58a60a078d6af
Merged-In: I8d6dd5efd226a8b1c4b05d1e1102362b58e094a1
Merged-In: Ied0cc53ac34c7c5f5539507b1979cbf9c215262e
Merged-In: I3b2b7dcb1a9a194fc08643b27bbb5a0e84e01412

(cherry picked from commit 1dfb6b67)

Change-Id: I9a17094bfdc54b9dec671306618e132a4beb59fc
parent ea783a09

core/java/android/net/IpPrefix.java

+16 −0
Original line number Diff line number Diff line
@@ -20,6 +20,8 @@ import android.os.Parcel; 
import android.os.Parcelable;

import android.util.Pair;



import java.net.Inet4Address;

import java.net.Inet6Address;

import java.net.InetAddress;

import java.net.UnknownHostException;

import java.util.Arrays;
@@ -184,6 +186,20 @@ public final class IpPrefix implements Parcelable { 
        return Arrays.equals(this.address, addrBytes);

    }



    /**

     * @hide

     */

    public boolean isIPv6() {

        return getAddress() instanceof Inet6Address;

    }



    /**

     * @hide

     */

    public boolean isIPv4() {

        return getAddress() instanceof Inet4Address;

    }



    /**

     * Returns a string representation of this {@code IpPrefix}.

     *

core/java/android/net/LinkAddress.java

+20 −3
Original line number Diff line number Diff line
@@ -76,7 +76,7 @@ public class LinkAddress implements Parcelable { 
     * RFC 6724 section 3.2.

     * @hide

     */

    static int scopeForUnicastAddress(InetAddress addr) {

    private static int scopeForUnicastAddress(InetAddress addr) {

        if (addr.isAnyLocalAddress()) {

            return RT_SCOPE_HOST;

        }
@@ -101,13 +101,29 @@ public class LinkAddress implements Parcelable { 
     * Per RFC 4193 section 8, fc00::/7 identifies these addresses.

     */

    private boolean isIPv6ULA() {

        if (address instanceof Inet6Address) {

        if (isIPv6()) {

            byte[] bytes = address.getAddress();

            return ((bytes[0] & (byte)0xfe) == (byte)0xfc);

        }

        return false;

    }



    /**

     * @return true if the address is IPv6.

     * @hide

     */

    public boolean isIPv6() {

        return address instanceof Inet6Address;

    }



    /**

     * @return true if the address is IPv4 or is a mapped IPv4 address.

     * @hide

     */

    public boolean isIPv4() {

        return address instanceof Inet4Address;

    }



    /**

     * Utility function for the constructors.

     */
@@ -115,7 +131,7 @@ public class LinkAddress implements Parcelable { 
        if (address == null ||

                address.isMulticastAddress() ||

                prefixLength < 0 ||

                ((address instanceof Inet4Address) && prefixLength > 32) ||

                (address instanceof Inet4Address && prefixLength > 32) ||

                (prefixLength > 128)) {

            throw new IllegalArgumentException("Bad LinkAddress params " + address +

                    "/" + prefixLength);
@@ -184,6 +200,7 @@ public class LinkAddress implements Parcelable { 
     */

    public LinkAddress(String address, int flags, int scope) {

        // This may throw an IllegalArgumentException; catching it is the caller's responsibility.

        // TODO: consider rejecting mapped IPv4 addresses such as "::ffff:192.0.2.5/24".

        Pair<InetAddress, Integer> ipAndMask = NetworkUtils.parseIpAndMask(address);

        init(ipAndMask.first, ipAndMask.second, flags, scope);

    }

core/tests/coretests/src/android/net/IpPrefixTest.java→tests/net/java/android/net/IpPrefixTest.java

+28 −15
Original line number Diff line number Diff line
@@ -16,18 +16,27 @@ 


package android.net;



import android.net.IpPrefix;

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.assertNotNull;

import static org.junit.Assert.assertTrue;

import static org.junit.Assert.fail;



import android.os.Parcel;

import android.test.suitebuilder.annotation.SmallTest;

import android.support.test.filters.SmallTest;

import android.support.test.runner.AndroidJUnit4;



import java.net.InetAddress;

import java.util.Random;

import junit.framework.TestCase;



import static android.test.MoreAsserts.assertNotEqual;

import static org.junit.Assert.assertArrayEquals;

import static org.junit.Assert.assertEquals;

import org.junit.runner.RunWith;

import org.junit.Test;



public class IpPrefixTest extends TestCase {

@RunWith(AndroidJUnit4.class)

@SmallTest

public class IpPrefixTest {



    private static InetAddress Address(String addr) {

        return InetAddress.parseNumericAddress(addr);
@@ -42,7 +51,7 @@ public class IpPrefixTest extends TestCase { 
        (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0xa0

    };



    @SmallTest

    @Test

    public void testConstructor() {

        IpPrefix p;

        try {
@@ -103,6 +112,7 @@ public class IpPrefixTest extends TestCase { 
        } catch(IllegalArgumentException expected) {}

    }



    @Test

    public void testTruncation() {

        IpPrefix p;
@@ -170,7 +180,7 @@ public class IpPrefixTest extends TestCase { 
        assertFalse(o2.equals(o1));

    }



    @SmallTest

    @Test

    public void testEquals() {

        IpPrefix p1, p2;
@@ -212,7 +222,7 @@ public class IpPrefixTest extends TestCase { 
        assertAreNotEqual(p1, p2);

    }



    @SmallTest

    @Test

    public void testContains() {

        IpPrefix p = new IpPrefix("2001:db8:f00::ace:d00d/127");

        assertTrue(p.contains(Address("2001:db8:f00::ace:d00c")));
@@ -240,7 +250,7 @@ public class IpPrefixTest extends TestCase { 
        assertFalse(ipv4Default.contains(Address("2001:db8::f00")));

    }



    @SmallTest

    @Test

    public void testHashCode() {

        IpPrefix p = new IpPrefix(new byte[4], 0);

        Random random = new Random();
@@ -261,12 +271,12 @@ public class IpPrefixTest extends TestCase { 
              assertEquals(p.hashCode(), oldP.hashCode());

            }

            if (p.hashCode() != oldP.hashCode()) {

              assertNotEqual(p, oldP);

              assertNotEquals(p, oldP);

            }

        }

    }



    @SmallTest

    @Test

    public void testHashCodeIsNotConstant() {

        IpPrefix[] prefixes = {

            new IpPrefix("2001:db8:f00::ace:d00d/127"),
@@ -276,12 +286,12 @@ public class IpPrefixTest extends TestCase { 
        };

        for (int i = 0; i < prefixes.length; i++) {

          for (int j = i + 1; j < prefixes.length; j++) {

            assertNotEqual(prefixes[i].hashCode(), prefixes[j].hashCode());

            assertNotEquals(prefixes[i].hashCode(), prefixes[j].hashCode());

          }

        }

    }



    @SmallTest

    @Test

    public void testMappedAddressesAreBroken() {

        // 192.0.2.0/24 != ::ffff:c000:0204/120, but because we use InetAddress,

        // we are unable to comprehend that.
@@ -318,13 +328,16 @@ public class IpPrefixTest extends TestCase { 
      assertEquals(p, p2);

    }



    @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());

    }

}

core/tests/coretests/src/android/net/LinkAddressTest.java→tests/net/java/android/net/LinkAddressTest.java

+48 −41
Original line number Diff line number Diff line
@@ -16,6 +16,23 @@ 


package android.net;



import static android.system.OsConstants.IFA_F_DADFAILED;

import static android.system.OsConstants.IFA_F_DEPRECATED;

import static android.system.OsConstants.IFA_F_OPTIMISTIC;

import static android.system.OsConstants.IFA_F_PERMANENT;

import static android.system.OsConstants.IFA_F_TEMPORARY;

import static android.system.OsConstants.IFA_F_TENTATIVE;

import static android.system.OsConstants.RT_SCOPE_HOST;

import static android.system.OsConstants.RT_SCOPE_LINK;

import static android.system.OsConstants.RT_SCOPE_SITE;

import static android.system.OsConstants.RT_SCOPE_UNIVERSE;

import static org.junit.Assert.assertEquals;

import static org.junit.Assert.assertFalse;

import static org.junit.Assert.assertNotEquals;

import static org.junit.Assert.assertNotNull;

import static org.junit.Assert.assertTrue;

import static org.junit.Assert.fail;



import java.net.Inet4Address;

import java.net.Inet6Address;

import java.net.InetAddress;
@@ -27,44 +44,35 @@ import java.util.Collections; 
import java.util.Comparator;

import java.util.List;



import android.net.LinkAddress;

import android.os.Parcel;

import android.test.AndroidTestCase;

import static android.test.MoreAsserts.assertNotEqual;

import android.test.suitebuilder.annotation.SmallTest;

import android.support.test.filters.SmallTest;

import android.support.test.runner.AndroidJUnit4;



import static android.system.OsConstants.IFA_F_DADFAILED;

import static android.system.OsConstants.IFA_F_DEPRECATED;

import static android.system.OsConstants.IFA_F_OPTIMISTIC;

import static android.system.OsConstants.IFA_F_PERMANENT;

import static android.system.OsConstants.IFA_F_TEMPORARY;

import static android.system.OsConstants.IFA_F_TENTATIVE;

import static android.system.OsConstants.RT_SCOPE_HOST;

import static android.system.OsConstants.RT_SCOPE_LINK;

import static android.system.OsConstants.RT_SCOPE_SITE;

import static android.system.OsConstants.RT_SCOPE_UNIVERSE;

import org.junit.runner.RunWith;

import org.junit.Test;



/**

 * Tests for {@link LinkAddress}.

 */

public class LinkAddressTest extends AndroidTestCase {

@RunWith(AndroidJUnit4.class)

@SmallTest

public class LinkAddressTest {



    private static final String V4 = "192.0.2.1";

    private static final String V6 = "2001:db8::1";

    private static final InetAddress V4_ADDRESS = NetworkUtils.numericToInetAddress(V4);

    private static final InetAddress V6_ADDRESS = NetworkUtils.numericToInetAddress(V6);



    @Test

    public void testConstants() {

        // RT_SCOPE_UNIVERSE = 0, but all the other constants should be nonzero.

        assertNotEqual(0, RT_SCOPE_HOST);

        assertNotEqual(0, RT_SCOPE_LINK);

        assertNotEqual(0, RT_SCOPE_SITE);

        assertNotEquals(0, RT_SCOPE_HOST);

        assertNotEquals(0, RT_SCOPE_LINK);

        assertNotEquals(0, RT_SCOPE_SITE);



        assertNotEqual(0, IFA_F_DEPRECATED);

        assertNotEqual(0, IFA_F_PERMANENT);

        assertNotEqual(0, IFA_F_TENTATIVE);

        assertNotEquals(0, IFA_F_DEPRECATED);

        assertNotEquals(0, IFA_F_PERMANENT);

        assertNotEquals(0, IFA_F_TENTATIVE);

    }



    @Test

    public void testConstructors() throws SocketException {

        LinkAddress address;
@@ -74,12 +82,14 @@ public class LinkAddressTest extends AndroidTestCase { 
        assertEquals(25, address.getPrefixLength());

        assertEquals(0, address.getFlags());

        assertEquals(RT_SCOPE_UNIVERSE, address.getScope());

        assertTrue(address.isIPv4());



        address = new LinkAddress(V6_ADDRESS, 127);

        assertEquals(V6_ADDRESS, address.getAddress());

        assertEquals(127, address.getPrefixLength());

        assertEquals(0, address.getFlags());

        assertEquals(RT_SCOPE_UNIVERSE, address.getScope());

        assertTrue(address.isIPv6());



        // Nonsensical flags/scopes or combinations thereof are acceptable.

        address = new LinkAddress(V6 + "/64", IFA_F_DEPRECATED | IFA_F_PERMANENT, RT_SCOPE_LINK);
@@ -87,12 +97,14 @@ public class LinkAddressTest extends AndroidTestCase { 
        assertEquals(64, address.getPrefixLength());

        assertEquals(IFA_F_DEPRECATED | IFA_F_PERMANENT, address.getFlags());

        assertEquals(RT_SCOPE_LINK, address.getScope());

        assertTrue(address.isIPv6());



        address = new LinkAddress(V4 + "/23", 123, 456);

        assertEquals(V4_ADDRESS, address.getAddress());

        assertEquals(23, address.getPrefixLength());

        assertEquals(123, address.getFlags());

        assertEquals(456, address.getScope());

        assertTrue(address.isIPv4());



        // InterfaceAddress doesn't have a constructor. Fetch some from an interface.

        List<InterfaceAddress> addrs = NetworkInterface.getByName("lo").getInterfaceAddresses();
@@ -174,6 +186,7 @@ public class LinkAddressTest extends AndroidTestCase { 
        } catch(IllegalArgumentException expected) {}

    }



    @Test

    public void testAddressScopes() {

        assertEquals(RT_SCOPE_HOST, new LinkAddress("::/128").getScope());

        assertEquals(RT_SCOPE_HOST, new LinkAddress("0.0.0.0/32").getScope());
@@ -216,6 +229,7 @@ public class LinkAddressTest extends AndroidTestCase { 
        assertFalse(l2 + " unexpectedly equal to " + l1, l2.equals(l1));

    }



    @Test

    public void testEqualsAndSameAddressAs() {

        LinkAddress l1, l2, l3;
@@ -293,26 +307,17 @@ public class LinkAddressTest extends AndroidTestCase { 
        assertIsSameAddressAs(l1, l2);

    }



    @Test

    public void testHashCode() {

        LinkAddress l;



        l = new LinkAddress(V4_ADDRESS, 23);

        assertEquals(-982787, l.hashCode());



        l = new LinkAddress(V4_ADDRESS, 23, 0, RT_SCOPE_HOST);

        assertEquals(-971865, l.hashCode());



        l = new LinkAddress(V4_ADDRESS, 27);

        assertEquals(-982743, l.hashCode());



        l = new LinkAddress(V6_ADDRESS, 64);

        assertEquals(1076522926, l.hashCode());

        LinkAddress l1, l2;



        l = new LinkAddress(V6_ADDRESS, 128);

        assertEquals(1076523630, l.hashCode());

        l1 = new LinkAddress(V4_ADDRESS, 23);

        l2 = new LinkAddress(V4_ADDRESS, 23, 0, RT_SCOPE_HOST);

        assertNotEquals(l1.hashCode(), l2.hashCode());



        l = new LinkAddress(V6_ADDRESS, 128, IFA_F_TENTATIVE, RT_SCOPE_UNIVERSE);

        assertEquals(1076524846, l.hashCode());

        l1 = new LinkAddress(V6_ADDRESS, 128);

        l2 = new LinkAddress(V6_ADDRESS, 128, IFA_F_TENTATIVE, RT_SCOPE_UNIVERSE);

        assertNotEquals(l1.hashCode(), l2.hashCode());

    }



    private LinkAddress passThroughParcel(LinkAddress l) {
@@ -334,6 +339,7 @@ public class LinkAddressTest extends AndroidTestCase { 
      assertEquals(l, l2);

    }



    @Test

    public void testParceling() {

        LinkAddress l;
@@ -352,6 +358,7 @@ public class LinkAddressTest extends AndroidTestCase { 
        assertFalse(msg, l.isGlobalPreferred());

    }



    @Test

    public void testIsGlobalPreferred() {

        LinkAddress l;