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/*
* 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.cts;
import static android.net.MacAddress.TYPE_BROADCAST;
import static android.net.MacAddress.TYPE_MULTICAST;
import static android.net.MacAddress.TYPE_UNICAST;
import static com.android.testutils.ParcelUtilsKt.assertParcelSane;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import android.net.MacAddress;
import androidx.test.filters.SmallTest;
import androidx.test.runner.AndroidJUnit4;
import org.junit.Test;
import org.junit.runner.RunWith;
import java.net.Inet6Address;
import java.util.Arrays;
@SmallTest
@RunWith(AndroidJUnit4.class)
public class MacAddressTest {
static class TestCase {
final String macAddress;
final String ouiString;
final int addressType;
final boolean isLocallyAssigned;
TestCase(String macAddress, String ouiString, int addressType, boolean isLocallyAssigned) {
this.macAddress = macAddress;
this.ouiString = ouiString;
this.addressType = addressType;
this.isLocallyAssigned = isLocallyAssigned;
}
}
static final boolean LOCALLY_ASSIGNED = true;
static final boolean GLOBALLY_UNIQUE = false;
static String typeToString(int addressType) {
switch (addressType) {
case TYPE_UNICAST:
return "TYPE_UNICAST";
case TYPE_BROADCAST:
return "TYPE_BROADCAST";
case TYPE_MULTICAST:
return "TYPE_MULTICAST";
default:
return "UNKNOWN";
}
}
static String localAssignedToString(boolean isLocallyAssigned) {
return isLocallyAssigned ? "LOCALLY_ASSIGNED" : "GLOBALLY_UNIQUE";
}
@Test
public void testMacAddress() {
TestCase[] tests = {
new TestCase("ff:ff:ff:ff:ff:ff", "ff:ff:ff", TYPE_BROADCAST, LOCALLY_ASSIGNED),
new TestCase("d2:c4:22:4d:32:a8", "d2:c4:22", TYPE_UNICAST, LOCALLY_ASSIGNED),
new TestCase("33:33:aa:bb:cc:dd", "33:33:aa", TYPE_MULTICAST, LOCALLY_ASSIGNED),
new TestCase("06:00:00:00:00:00", "06:00:00", TYPE_UNICAST, LOCALLY_ASSIGNED),
new TestCase("07:00:d3:56:8a:c4", "07:00:d3", TYPE_MULTICAST, LOCALLY_ASSIGNED),
new TestCase("00:01:44:55:66:77", "00:01:44", TYPE_UNICAST, GLOBALLY_UNIQUE),
new TestCase("08:00:22:33:44:55", "08:00:22", TYPE_UNICAST, GLOBALLY_UNIQUE),
};
for (TestCase tc : tests) {
MacAddress mac = MacAddress.fromString(tc.macAddress);
if (!tc.ouiString.equals(mac.toOuiString())) {
fail(String.format("expected OUI string %s, got %s",
tc.ouiString, mac.toOuiString()));
}
if (tc.isLocallyAssigned != mac.isLocallyAssigned()) {
fail(String.format("expected %s to be %s, got %s", mac,
localAssignedToString(tc.isLocallyAssigned),
localAssignedToString(mac.isLocallyAssigned())));
}
if (tc.addressType != mac.getAddressType()) {
fail(String.format("expected %s address type to be %s, got %s", mac,
typeToString(tc.addressType), typeToString(mac.getAddressType())));
}
if (!tc.macAddress.equals(mac.toString())) {
fail(String.format("expected toString() to return %s, got %s",
tc.macAddress, mac.toString()));
}
if (!mac.equals(MacAddress.fromBytes(mac.toByteArray()))) {
byte[] bytes = mac.toByteArray();
fail(String.format("expected mac address from bytes %s to be %s, got %s",
Arrays.toString(bytes),
MacAddress.fromBytes(bytes),
mac));
}
}
}
@Test
public void testConstructorInputValidation() {
String[] invalidStringAddresses = {
"",
"abcd",
"1:2:3:4:5",
"1:2:3:4:5:6:7",
"10000:2:3:4:5:6",
};
for (String s : invalidStringAddresses) {
try {
MacAddress mac = MacAddress.fromString(s);
fail("MacAddress.fromString(" + s + ") should have failed, but returned " + mac);
} catch (IllegalArgumentException excepted) {
}
}
try {
MacAddress mac = MacAddress.fromString(null);
fail("MacAddress.fromString(null) should have failed, but returned " + mac);
} catch (NullPointerException excepted) {
}
byte[][] invalidBytesAddresses = {
{},
{1,2,3,4,5},
{1,2,3,4,5,6,7},
};
for (byte[] b : invalidBytesAddresses) {
try {
MacAddress mac = MacAddress.fromBytes(b);
fail("MacAddress.fromBytes(" + Arrays.toString(b)
+ ") should have failed, but returned " + mac);
} catch (IllegalArgumentException excepted) {
}
}
try {
MacAddress mac = MacAddress.fromBytes(null);
fail("MacAddress.fromBytes(null) should have failed, but returned " + mac);
} catch (NullPointerException excepted) {
}
}
@Test
public void testMatches() {
// match 4 bytes prefix
assertTrue(MacAddress.fromString("aa:bb:cc:dd:ee:11").matches(
MacAddress.fromString("aa:bb:cc:dd:00:00"),
MacAddress.fromString("ff:ff:ff:ff:00:00")));
// match bytes 0,1,2 and 5
assertTrue(MacAddress.fromString("aa:bb:cc:dd:ee:11").matches(
MacAddress.fromString("aa:bb:cc:00:00:11"),
MacAddress.fromString("ff:ff:ff:00:00:ff")));
// match 34 bit prefix
assertTrue(MacAddress.fromString("aa:bb:cc:dd:ee:11").matches(
MacAddress.fromString("aa:bb:cc:dd:c0:00"),
MacAddress.fromString("ff:ff:ff:ff:c0:00")));
// fail to match 36 bit prefix
assertFalse(MacAddress.fromString("aa:bb:cc:dd:ee:11").matches(
MacAddress.fromString("aa:bb:cc:dd:40:00"),
MacAddress.fromString("ff:ff:ff:ff:f0:00")));
// match all 6 bytes
assertTrue(MacAddress.fromString("aa:bb:cc:dd:ee:11").matches(
MacAddress.fromString("aa:bb:cc:dd:ee:11"),
MacAddress.fromString("ff:ff:ff:ff:ff:ff")));
// match none of 6 bytes
assertTrue(MacAddress.fromString("aa:bb:cc:dd:ee:11").matches(
MacAddress.fromString("00:00:00:00:00:00"),
MacAddress.fromString("00:00:00:00:00:00")));
}
/**
* Tests that link-local address generation from MAC is valid.
*/
@Test
public void testLinkLocalFromMacGeneration() {
final MacAddress mac = MacAddress.fromString("52:74:f2:b1:a8:7f");
final byte[] inet6ll = {(byte) 0xfe, (byte) 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50,
0x74, (byte) 0xf2, (byte) 0xff, (byte) 0xfe, (byte) 0xb1, (byte) 0xa8, 0x7f};
final Inet6Address llv6 = mac.getLinkLocalIpv6FromEui48Mac();
assertTrue(llv6.isLinkLocalAddress());
assertArrayEquals(inet6ll, llv6.getAddress());
}
@Test
public void testParcelMacAddress() {
final MacAddress mac = MacAddress.fromString("52:74:f2:b1:a8:7f");
assertParcelSane(mac, 1);
}
}