M7350/base/core/java/android/net/LinkProperties.java

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2024-09-09 08:52:07 +00:00
/*
* Copyright (C) 2010 The Android Open Source Project
* Copyright (C) 2010-2011, The Linux Foundation. All rights reserved.
*
* 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 android.os.Parcel;
import android.os.Parcelable;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
/**
* Describes the properties of a network link.
* TODO - consider adding optional fields like Apn and ApnType
* @hide
*/
public class LinkProperties implements Parcelable {
private NetworkInterface mIface;
private Collection<InetAddress> mAddresses;
private Collection<InetAddress> mDnses;
private InetAddress mGateway;
public LinkProperties() {
clear();
}
// copy constructor instead of clone
public LinkProperties(LinkProperties source) {
if (source != null) {
mIface = source.getInterface();
mAddresses = source.getAddresses();
mDnses = source.getDnses();
mGateway = source.getGateway();
} else {
clear();
}
}
public void setInterface(NetworkInterface iface) {
mIface = iface;
}
public NetworkInterface getInterface() {
return mIface;
}
public String getInterfaceName() {
return (mIface == null ? null : mIface.getName());
}
public void addAddress(InetAddress address) {
mAddresses.add(address);
}
public Collection<InetAddress> getAddresses() {
return Collections.unmodifiableCollection(mAddresses);
}
public void addDns(InetAddress dns) {
mDnses.add(dns);
}
public Collection<InetAddress> getDnses() {
return Collections.unmodifiableCollection(mDnses);
}
public void setGateway(InetAddress gateway) {
mGateway = gateway;
}
public InetAddress getGateway() {
return mGateway;
}
public void clear() {
mIface = null;
mAddresses = new ArrayList<InetAddress>();
mDnses = new ArrayList<InetAddress>();
mGateway = null;
}
/**
* Implement the Parcelable interface
* @hide
*/
public int describeContents() {
return 0;
}
@Override
public String toString() {
String ifaceName = (mIface == null ? "" : "InterfaceName: " + mIface.getName() + " ");
String ip = "IpAddresses: [";
for (InetAddress addr : mAddresses) ip += addr.getHostAddress() + ",";
ip += "] ";
String dns = "DnsAddresses: [";
for (InetAddress addr : mDnses) dns += addr.getHostAddress() + ",";
dns += "] ";
String gateway = (mGateway == null ? "" : "Gateway: " + mGateway.getHostAddress() + " ");
return ifaceName + ip + gateway + dns;
}
/**
* Implement the Parcelable interface.
* @hide
*/
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(getInterfaceName());
dest.writeInt(mAddresses.size());
//TODO: explore an easy alternative to preserve hostname
// without doing a lookup
for(InetAddress a : mAddresses) {
dest.writeByteArray(a.getAddress());
}
dest.writeInt(mDnses.size());
for(InetAddress d : mDnses) {
dest.writeByteArray(d.getAddress());
}
if (mGateway != null) {
dest.writeByte((byte)1);
dest.writeByteArray(mGateway.getAddress());
} else {
dest.writeByte((byte)0);
}
}
/**
* Implement the Parcelable interface.
* @hide
*/
public static final Creator<LinkProperties> CREATOR =
new Creator<LinkProperties>() {
public LinkProperties createFromParcel(Parcel in) {
LinkProperties netProp = new LinkProperties();
String iface = in.readString();
if (iface != null) {
try {
netProp.setInterface(NetworkInterface.getByName(iface));
} catch (Exception e) {
return null;
}
}
int addressCount = in.readInt();
for (int i=0; i<addressCount; i++) {
try {
netProp.addAddress(InetAddress.getByAddress(in.createByteArray()));
} catch (UnknownHostException e) { }
}
addressCount = in.readInt();
for (int i=0; i<addressCount; i++) {
try {
netProp.addDns(InetAddress.getByAddress(in.createByteArray()));
} catch (UnknownHostException e) { }
}
if (in.readByte() == 1) {
try {
netProp.setGateway(InetAddress.getByAddress(in.createByteArray()));
} catch (UnknownHostException e) {}
}
return netProp;
}
public LinkProperties[] newArray(int size) {
return new LinkProperties[size];
}
};
}