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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.net;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
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.ProxyInfo;
import android.net.StaticIpConfiguration;
import android.util.ArrayMap;
import androidx.test.runner.AndroidJUnit4;
import org.junit.Test;
import org.junit.runner.RunWith;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.InetAddress;
import java.util.ArrayList;
import java.util.Arrays;
/**
* Unit tests for {@link IpConfigStore}
*/
@RunWith(AndroidJUnit4.class)
public class IpConfigStoreTest {
private static final int KEY_CONFIG = 17;
private static final String IFACE_1 = "eth0";
private static final String IFACE_2 = "eth1";
private static final String IP_ADDR_1 = "192.168.1.10/24";
private static final String IP_ADDR_2 = "192.168.1.20/24";
private static final String DNS_IP_ADDR_1 = "1.2.3.4";
private static final String DNS_IP_ADDR_2 = "5.6.7.8";
@Test
public void backwardCompatibility2to3() throws IOException {
ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
DataOutputStream outputStream = new DataOutputStream(byteStream);
final IpConfiguration expectedConfig =
newIpConfiguration(IpAssignment.DHCP, ProxySettings.NONE, null, null);
// Emulate writing to old format.
writeDhcpConfigV2(outputStream, KEY_CONFIG, expectedConfig);
InputStream in = new ByteArrayInputStream(byteStream.toByteArray());
ArrayMap<String, IpConfiguration> configurations = IpConfigStore.readIpConfigurations(in);
assertNotNull(configurations);
assertEquals(1, configurations.size());
IpConfiguration actualConfig = configurations.get(String.valueOf(KEY_CONFIG));
assertNotNull(actualConfig);
assertEquals(expectedConfig, actualConfig);
}
@Test
public void staticIpMultiNetworks() throws Exception {
final ArrayList<InetAddress> dnsServers = new ArrayList<>();
dnsServers.add(InetAddresses.parseNumericAddress(DNS_IP_ADDR_1));
dnsServers.add(InetAddresses.parseNumericAddress(DNS_IP_ADDR_2));
final StaticIpConfiguration staticIpConfiguration1 = new StaticIpConfiguration.Builder()
.setIpAddress(new LinkAddress(IP_ADDR_1))
.setDnsServers(dnsServers).build();
final StaticIpConfiguration staticIpConfiguration2 = new StaticIpConfiguration.Builder()
.setIpAddress(new LinkAddress(IP_ADDR_2))
.setDnsServers(dnsServers).build();
ProxyInfo proxyInfo =
ProxyInfo.buildDirectProxy("10.10.10.10", 88, Arrays.asList("host1", "host2"));
IpConfiguration expectedConfig1 = newIpConfiguration(IpAssignment.STATIC,
ProxySettings.STATIC, staticIpConfiguration1, proxyInfo);
IpConfiguration expectedConfig2 = newIpConfiguration(IpAssignment.STATIC,
ProxySettings.STATIC, staticIpConfiguration2, proxyInfo);
ArrayMap<String, IpConfiguration> expectedNetworks = new ArrayMap<>();
expectedNetworks.put(IFACE_1, expectedConfig1);
expectedNetworks.put(IFACE_2, expectedConfig2);
MockedDelayedDiskWrite writer = new MockedDelayedDiskWrite();
IpConfigStore store = new IpConfigStore(writer);
store.writeIpConfigurations("file/path/not/used/", expectedNetworks);
InputStream in = new ByteArrayInputStream(writer.mByteStream.toByteArray());
ArrayMap<String, IpConfiguration> actualNetworks = IpConfigStore.readIpConfigurations(in);
assertNotNull(actualNetworks);
assertEquals(2, actualNetworks.size());
assertEquals(expectedNetworks.get(IFACE_1), actualNetworks.get(IFACE_1));
assertEquals(expectedNetworks.get(IFACE_2), actualNetworks.get(IFACE_2));
}
private IpConfiguration newIpConfiguration(IpAssignment ipAssignment,
ProxySettings proxySettings, StaticIpConfiguration staticIpConfig, ProxyInfo info) {
final IpConfiguration config = new IpConfiguration();
config.setIpAssignment(ipAssignment);
config.setProxySettings(proxySettings);
config.setStaticIpConfiguration(staticIpConfig);
config.setHttpProxy(info);
return config;
}
// This is simplified snapshot of code that was used to store values in V2 format (key as int).
private static void writeDhcpConfigV2(DataOutputStream out, int configKey,
IpConfiguration config) throws IOException {
out.writeInt(2); // VERSION 2
switch (config.getIpAssignment()) {
case DHCP:
out.writeUTF("ipAssignment");
out.writeUTF(config.getIpAssignment().toString());
break;
default:
fail("Not supported in test environment");
}
out.writeUTF("id");
out.writeInt(configKey);
out.writeUTF("eos");
}
/** Synchronously writes into given byte steam */
private static class MockedDelayedDiskWrite extends DelayedDiskWrite {
final ByteArrayOutputStream mByteStream = new ByteArrayOutputStream();
@Override
public void write(String filePath, Writer w) {
DataOutputStream outputStream = new DataOutputStream(mByteStream);
try {
w.onWriteCalled(outputStream);
} catch (IOException e) {
fail();
}
}
}
}
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