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// Licensed to the Software Freedom Conservancy (SFC) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The SFC licenses this file
// to you 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 org.openqa.selenium.net;
import static java.util.Collections.list;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.SocketException;
import java.util.Arrays;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.StringJoiner;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.stream.Collectors;
import java.util.stream.StreamSupport;
public class NetworkInterface {
private static final Logger LOG = Logger.getLogger(NetworkInterface.class.getName());
private final String name;
private java.net.NetworkInterface networkInterface;
private final Iterable inetAddresses;
private Boolean isLoopback;
public NetworkInterface(java.net.NetworkInterface networkInterface) {
this(networkInterface.getName(), list(networkInterface.getInetAddresses()));
this.networkInterface = networkInterface;
}
NetworkInterface(String name, Iterable inetAddresses) {
this.name = name;
this.inetAddresses =
StreamSupport.stream(inetAddresses.spliterator(), false)
.collect(Collectors.toCollection(LinkedHashSet::new));
}
NetworkInterface(String name, InetAddress... inetAddresses) {
this(name, Arrays.asList(inetAddresses));
this.isLoopback = isLoopBackFromINetAddresses(this.inetAddresses);
}
public boolean isIp4AddressBindingOnly() {
return getIp6Address() == null;
}
public boolean isLoopBack() {
if (isLoopback == null && networkInterface != null) {
try {
// Issue 1181 : determine whether this NetworkInterface instance is loopback
// from java.net.NetworkInterface API
isLoopback = networkInterface.isLoopback();
} catch (SocketException ex) {
LOG.log(Level.WARNING, null, ex);
// If a SocketException is caught, determine whether this NetworkInterface
// instance is loopback from computation from its inetAddresses
isLoopback = isLoopBackFromINetAddresses(list(networkInterface.getInetAddresses()));
}
}
// 'isLoopback != null' to avoid an unboxing NPE
return isLoopback != null && isLoopback;
}
private boolean isLoopBackFromINetAddresses(Iterable inetAddresses) {
// Let's hope there's no such thing as network interfaces with mixed addresses ;)
Iterator iterator = inetAddresses.iterator();
return iterator.hasNext() && iterator.next().isLoopbackAddress();
}
InetAddress getIp4LoopbackOnly() {
// Goes by the wildly unscientific assumption that if there are more than one set of
// loopback addresses, firefox will bind to the last one we get.
// An alternate theory if this fails is that firefox prefers 127.0.0.1
// Most "normal" boxes don't have multiple addresses so we'll just refine this
// algorithm until it works.
// See NetworkUtilsTest#testOpenSuseBoxIssue1181
// Issue 1181
if (!isLoopBack()) {
return null;
}
InetAddress lastFound = null;
for (InetAddress inetAddress : inetAddresses) {
if (inetAddress.isLoopbackAddress() && !isIpv6(inetAddress)) {
lastFound = inetAddress;
}
}
return lastFound;
}
static boolean isIpv6(InetAddress address) {
return address instanceof Inet6Address;
}
public InetAddress getIp4NonLoopBackOnly() {
for (InetAddress inetAddress : inetAddresses) {
if (!inetAddress.isLoopbackAddress() && !isIpv6(inetAddress)) {
return inetAddress;
}
}
return null;
}
public InetAddress getIp6Address() {
for (InetAddress inetAddress : inetAddresses) {
if (isIpv6(inetAddress)) {
return inetAddress;
}
}
return null;
}
public Iterable getInetAddresses() {
return inetAddresses;
}
public String getName() {
return name;
}
@Override
public String toString() {
return new StringJoiner(", ", NetworkInterface.class.getSimpleName() + "[", "]")
.add("name='" + name + "'")
.add("networkInterface=" + networkInterface)
.add("inetAddresses=" + inetAddresses)
.add("isLoopback=" + isLoopback)
.toString();
}
}