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/*
* Copyright (C) 2015 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 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 android.os.Build;
import android.platform.test.annotations.AppModeFull;
import androidx.test.filters.SmallTest;
import androidx.test.runner.AndroidJUnit4;
import com.android.testutils.ConnectivityModuleTest;
import com.android.testutils.DevSdkIgnoreRule;
import com.android.testutils.DevSdkIgnoreRule.IgnoreAfter;
import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.net.DatagramSocket;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.SocketException;
@RunWith(AndroidJUnit4.class)
@SmallTest
@ConnectivityModuleTest
public class NetworkTest {
final Network mNetwork = new Network(99);
@Rule
public final DevSdkIgnoreRule mIgnoreRule = new DevSdkIgnoreRule();
@Test
public void testBindSocketOfInvalidFdThrows() throws Exception {
final FileDescriptor fd = new FileDescriptor();
assertFalse(fd.valid());
try {
mNetwork.bindSocket(fd);
fail("SocketException not thrown");
} catch (SocketException expected) {}
}
@Test
public void testBindSocketOfNonSocketFdThrows() throws Exception {
final File devNull = new File("/dev/null");
assertTrue(devNull.canRead());
final FileInputStream fis = new FileInputStream(devNull);
assertTrue(null != fis.getFD());
assertTrue(fis.getFD().valid());
try {
mNetwork.bindSocket(fis.getFD());
fail("SocketException not thrown");
} catch (SocketException expected) {}
}
@Test
@AppModeFull(reason = "Socket cannot bind in instant app mode")
public void testBindSocketOfConnectedDatagramSocketThrows() throws Exception {
final DatagramSocket mDgramSocket = new DatagramSocket(0, (InetAddress) Inet6Address.ANY);
mDgramSocket.connect((InetAddress) Inet6Address.LOOPBACK, 53);
assertTrue(mDgramSocket.isConnected());
try {
mNetwork.bindSocket(mDgramSocket);
fail("SocketException not thrown");
} catch (SocketException expected) {}
}
@Test
public void testBindSocketOfLocalSocketThrows() throws Exception {
final LocalSocket mLocalClient = new LocalSocket();
mLocalClient.bind(new LocalSocketAddress("testClient"));
assertTrue(mLocalClient.getFileDescriptor().valid());
try {
mNetwork.bindSocket(mLocalClient.getFileDescriptor());
fail("SocketException not thrown");
} catch (SocketException expected) {}
final LocalServerSocket mLocalServer = new LocalServerSocket("testServer");
mLocalClient.connect(mLocalServer.getLocalSocketAddress());
assertTrue(mLocalClient.isConnected());
try {
mNetwork.bindSocket(mLocalClient.getFileDescriptor());
fail("SocketException not thrown");
} catch (SocketException expected) {}
}
@Test
public void testZeroIsObviousForDebugging() {
Network zero = new Network(0);
assertEquals(0, zero.hashCode());
assertEquals(0, zero.getNetworkHandle());
assertEquals("0", zero.toString());
}
@Test
public void testGetNetworkHandle() {
Network one = new Network(1);
Network two = new Network(2);
Network three = new Network(3);
// None of the hashcodes are zero.
assertNotEquals(0, one.hashCode());
assertNotEquals(0, two.hashCode());
assertNotEquals(0, three.hashCode());
// All the hashcodes are distinct.
assertNotEquals(one.hashCode(), two.hashCode());
assertNotEquals(one.hashCode(), three.hashCode());
assertNotEquals(two.hashCode(), three.hashCode());
// None of the handles are zero.
assertNotEquals(0, one.getNetworkHandle());
assertNotEquals(0, two.getNetworkHandle());
assertNotEquals(0, three.getNetworkHandle());
// All the handles are distinct.
assertNotEquals(one.getNetworkHandle(), two.getNetworkHandle());
assertNotEquals(one.getNetworkHandle(), three.getNetworkHandle());
assertNotEquals(two.getNetworkHandle(), three.getNetworkHandle());
// The handles are not equal to the hashcodes.
assertNotEquals(one.hashCode(), one.getNetworkHandle());
assertNotEquals(two.hashCode(), two.getNetworkHandle());
assertNotEquals(three.hashCode(), three.getNetworkHandle());
// Adjust as necessary to test an implementation's specific constants.
// When running with runtest, "adb logcat -s TestRunner" can be useful.
assertEquals(7700664333L, one.getNetworkHandle());
assertEquals(11995631629L, two.getNetworkHandle());
assertEquals(16290598925L, three.getNetworkHandle());
}
// getNetId() did not exist in Q
@Test @IgnoreUpTo(Build.VERSION_CODES.Q)
public void testGetNetId() {
assertEquals(1234, new Network(1234).getNetId());
assertEquals(2345, new Network(2345, true).getNetId());
}
@Test
public void testFromNetworkHandle() {
final Network network = new Network(1234);
assertEquals(network.netId, Network.fromNetworkHandle(network.getNetworkHandle()).netId);
}
// Parsing private DNS bypassing handle was not supported until S
@Test @IgnoreUpTo(Build.VERSION_CODES.R)
public void testFromNetworkHandlePrivateDnsBypass_S() {
final Network network = new Network(1234, true);
final Network recreatedNetwork = Network.fromNetworkHandle(network.getNetworkHandle());
assertEquals(network.netId, recreatedNetwork.netId);
assertEquals(network.getNetIdForResolv(), recreatedNetwork.getNetIdForResolv());
}
@Test @IgnoreAfter(Build.VERSION_CODES.R)
public void testFromNetworkHandlePrivateDnsBypass_R() {
final Network network = new Network(1234, true);
final Network recreatedNetwork = Network.fromNetworkHandle(network.getNetworkHandle());
assertEquals(network.netId, recreatedNetwork.netId);
// Until R included, fromNetworkHandle would not parse the private DNS bypass flag
assertEquals(network.netId, recreatedNetwork.getNetIdForResolv());
}
@Test
public void testGetPrivateDnsBypassingCopy() {
final Network copy = mNetwork.getPrivateDnsBypassingCopy();
assertEquals(mNetwork.netId, copy.netId);
assertNotEquals(copy.netId, copy.getNetIdForResolv());
assertNotEquals(mNetwork.getNetIdForResolv(), copy.getNetIdForResolv());
}
}
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