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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 com.android.server.ethernet;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import android.net.InetAddresses;
import android.net.IpConfiguration;
import android.net.IpConfiguration.IpAssignment;
import android.net.IpConfiguration.ProxySettings;
import android.net.LinkAddress;
import android.net.NetworkCapabilities;
import android.net.StaticIpConfiguration;
import androidx.test.filters.SmallTest;
import androidx.test.runner.AndroidJUnit4;
import org.junit.Test;
import org.junit.runner.RunWith;
import java.net.InetAddress;
import java.util.ArrayList;
@SmallTest
@RunWith(AndroidJUnit4.class)
public class EthernetTrackerTest {
/**
* Test: Creation of various valid static IP configurations
*/
@Test
public void createStaticIpConfiguration() {
// Empty gives default StaticIPConfiguration object
assertStaticConfiguration(new StaticIpConfiguration(), "");
// Setting only the IP address properly cascades and assumes defaults
assertStaticConfiguration(new StaticIpConfiguration.Builder()
.setIpAddress(new LinkAddress("192.0.2.10/24")).build(), "ip=192.0.2.10/24");
final ArrayList<InetAddress> dnsAddresses = new ArrayList<>();
dnsAddresses.add(InetAddresses.parseNumericAddress("4.4.4.4"));
dnsAddresses.add(InetAddresses.parseNumericAddress("8.8.8.8"));
// Setting other fields properly cascades them
assertStaticConfiguration(new StaticIpConfiguration.Builder()
.setIpAddress(new LinkAddress("192.0.2.10/24"))
.setDnsServers(dnsAddresses)
.setGateway(InetAddresses.parseNumericAddress("192.0.2.1"))
.setDomains("android").build(),
"ip=192.0.2.10/24 dns=4.4.4.4,8.8.8.8 gateway=192.0.2.1 domains=android");
// Verify order doesn't matter
assertStaticConfiguration(new StaticIpConfiguration.Builder()
.setIpAddress(new LinkAddress("192.0.2.10/24"))
.setDnsServers(dnsAddresses)
.setGateway(InetAddresses.parseNumericAddress("192.0.2.1"))
.setDomains("android").build(),
"domains=android ip=192.0.2.10/24 gateway=192.0.2.1 dns=4.4.4.4,8.8.8.8 ");
}
/**
* Test: Attempt creation of various bad static IP configurations
*/
@Test
public void createStaticIpConfiguration_Bad() {
assertStaticConfigurationFails("ip=192.0.2.1/24 gateway= blah=20.20.20.20"); // Unknown key
assertStaticConfigurationFails("ip=192.0.2.1"); // mask is missing
assertStaticConfigurationFails("ip=a.b.c"); // not a valid ip address
assertStaticConfigurationFails("dns=4.4.4.4,1.2.3.A"); // not valid ip address in dns
assertStaticConfigurationFails("="); // Key and value is empty
assertStaticConfigurationFails("ip="); // Value is empty
assertStaticConfigurationFails("ip=192.0.2.1/24 gateway="); // Gateway is empty
}
private void assertStaticConfigurationFails(String config) {
try {
EthernetTracker.parseStaticIpConfiguration(config);
fail("Expected to fail: " + config);
} catch (IllegalArgumentException e) {
// expected
}
}
private void assertStaticConfiguration(StaticIpConfiguration expectedStaticIpConfig,
String configAsString) {
final IpConfiguration expectedIpConfiguration = new IpConfiguration();
expectedIpConfiguration.setIpAssignment(IpAssignment.STATIC);
expectedIpConfiguration.setProxySettings(ProxySettings.NONE);
expectedIpConfiguration.setStaticIpConfiguration(expectedStaticIpConfig);
assertEquals(expectedIpConfiguration,
EthernetTracker.parseStaticIpConfiguration(configAsString));
}
private NetworkCapabilities.Builder makeEthernetCapabilitiesBuilder(boolean clearAll) {
final NetworkCapabilities.Builder builder =
clearAll ? NetworkCapabilities.Builder.withoutDefaultCapabilities()
: new NetworkCapabilities.Builder();
return builder.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING)
.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_CONGESTED)
.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED);
}
/**
* Test: Attempt to create a capabilties with various valid sets of capabilities/transports
*/
@Test
public void createNetworkCapabilities() {
// Particularly common expected results
NetworkCapabilities defaultEthernetCleared =
makeEthernetCapabilitiesBuilder(true /* clearAll */)
.setLinkUpstreamBandwidthKbps(100000)
.setLinkDownstreamBandwidthKbps(100000)
.addTransportType(NetworkCapabilities.TRANSPORT_ETHERNET)
.build();
NetworkCapabilities ethernetClearedWithCommonCaps =
makeEthernetCapabilitiesBuilder(true /* clearAll */)
.setLinkUpstreamBandwidthKbps(100000)
.setLinkDownstreamBandwidthKbps(100000)
.addTransportType(NetworkCapabilities.TRANSPORT_ETHERNET)
.addCapability(12)
.addCapability(13)
.addCapability(14)
.addCapability(15)
.build();
// Empty capabilities and transports lists with a "please clear defaults" should
// yield an empty capabilities set with TRANPORT_ETHERNET
assertParsedNetworkCapabilities(defaultEthernetCleared, true, "", "");
// Empty capabilities and transports without the clear defaults flag should return the
// default capabilities set with TRANSPORT_ETHERNET
assertParsedNetworkCapabilities(
makeEthernetCapabilitiesBuilder(false /* clearAll */)
.setLinkUpstreamBandwidthKbps(100000)
.setLinkDownstreamBandwidthKbps(100000)
.addTransportType(NetworkCapabilities.TRANSPORT_ETHERNET)
.build(),
false, "", "");
// A list of capabilities without the clear defaults flag should return the default
// capabilities, mixed with the desired capabilities, and TRANSPORT_ETHERNET
assertParsedNetworkCapabilities(
makeEthernetCapabilitiesBuilder(false /* clearAll */)
.setLinkUpstreamBandwidthKbps(100000)
.setLinkDownstreamBandwidthKbps(100000)
.addTransportType(NetworkCapabilities.TRANSPORT_ETHERNET)
.addCapability(11)
.addCapability(12)
.build(),
false, "11,12", "");
// Adding a list of capabilities with a clear defaults will leave exactly those capabilities
// with a default TRANSPORT_ETHERNET since no overrides are specified
assertParsedNetworkCapabilities(ethernetClearedWithCommonCaps, true, "12,13,14,15", "");
// Adding any invalid capabilities to the list will cause them to be ignored
assertParsedNetworkCapabilities(ethernetClearedWithCommonCaps, true, "12,13,14,15,65,73", "");
assertParsedNetworkCapabilities(ethernetClearedWithCommonCaps, true, "12,13,14,15,abcdefg", "");
// Adding a valid override transport will remove the default TRANSPORT_ETHERNET transport
// and apply only the override to the capabiltities object
assertParsedNetworkCapabilities(
makeEthernetCapabilitiesBuilder(true /* clearAll */)
.setLinkUpstreamBandwidthKbps(100000)
.setLinkDownstreamBandwidthKbps(100000)
.addTransportType(0)
.build(),
true, "", "0");
assertParsedNetworkCapabilities(
makeEthernetCapabilitiesBuilder(true /* clearAll */)
.setLinkUpstreamBandwidthKbps(100000)
.setLinkDownstreamBandwidthKbps(100000)
.addTransportType(1)
.build(),
true, "", "1");
assertParsedNetworkCapabilities(
makeEthernetCapabilitiesBuilder(true /* clearAll */)
.setLinkUpstreamBandwidthKbps(100000)
.setLinkDownstreamBandwidthKbps(100000)
.addTransportType(2)
.build(),
true, "", "2");
assertParsedNetworkCapabilities(
makeEthernetCapabilitiesBuilder(true /* clearAll */)
.setLinkUpstreamBandwidthKbps(100000)
.setLinkDownstreamBandwidthKbps(100000)
.addTransportType(3)
.build(),
true, "", "3");
// "4" is TRANSPORT_VPN, which is unsupported. Should default back to TRANPORT_ETHERNET
assertParsedNetworkCapabilities(defaultEthernetCleared, true, "", "4");
// "5" is TRANSPORT_WIFI_AWARE, which is currently supported due to no legacy TYPE_NONE
// conversion. When that becomes available, this test must be updated
assertParsedNetworkCapabilities(defaultEthernetCleared, true, "", "5");
// "6" is TRANSPORT_LOWPAN, which is currently supported due to no legacy TYPE_NONE
// conversion. When that becomes available, this test must be updated
assertParsedNetworkCapabilities(defaultEthernetCleared, true, "", "6");
// Adding an invalid override transport will leave the transport as TRANSPORT_ETHERNET
assertParsedNetworkCapabilities(defaultEthernetCleared,true, "", "100");
assertParsedNetworkCapabilities(defaultEthernetCleared, true, "", "abcdefg");
// Ensure the adding of both capabilities and transports work
assertParsedNetworkCapabilities(
makeEthernetCapabilitiesBuilder(true /* clearAll */)
.setLinkUpstreamBandwidthKbps(100000)
.setLinkDownstreamBandwidthKbps(100000)
.addCapability(12)
.addCapability(13)
.addCapability(14)
.addCapability(15)
.addTransportType(3)
.build(),
true, "12,13,14,15", "3");
// Ensure order does not matter for capability list
assertParsedNetworkCapabilities(ethernetClearedWithCommonCaps, true, "13,12,15,14", "");
}
private void assertParsedNetworkCapabilities(NetworkCapabilities expectedNetworkCapabilities,
boolean clearCapabilties, String configCapabiltiies,String configTransports) {
assertEquals(expectedNetworkCapabilities,
EthernetTracker.createNetworkCapabilities(clearCapabilties, configCapabiltiies,
configTransports).build());
}
}
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