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/*
* Copyright (C) 2012 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 android.net.NetworkUtils;
import android.os.Parcel;
import android.text.TextUtils;
import android.util.Log;
import java.net.InetAddress;
import java.net.Inet4Address;
import java.util.Objects;
/**
* A simple object for retrieving the results of a DHCP request.
* Optimized (attempted) for that jni interface
* TODO - remove when DhcpInfo is deprecated. Move the remaining api to LinkProperties.
* @hide
*/
public class DhcpResults extends StaticIpConfiguration {
private static final String TAG = "DhcpResults";
public InetAddress serverAddress;
/** Vendor specific information (from RFC 2132). */
public String vendorInfo;
public int leaseDuration;
public DhcpResults() {
super();
}
public DhcpResults(StaticIpConfiguration source) {
super(source);
}
/** copy constructor */
public DhcpResults(DhcpResults source) {
super(source);
if (source != null) {
// All these are immutable, so no need to make copies.
serverAddress = source.serverAddress;
vendorInfo = source.vendorInfo;
leaseDuration = source.leaseDuration;
}
}
/**
* Updates the DHCP fields that need to be retained from
* original DHCP request if the current renewal shows them
* being empty.
*/
public void updateFromDhcpRequest(DhcpResults orig) {
if (orig == null) return;
if (gateway == null) gateway = orig.gateway;
if (dnsServers.size() == 0) {
dnsServers.addAll(orig.dnsServers);
}
}
/**
* Test if this DHCP lease includes vendor hint that network link is
* metered, and sensitive to heavy data transfers.
*/
public boolean hasMeteredHint() {
if (vendorInfo != null) {
return vendorInfo.contains("ANDROID_METERED");
} else {
return false;
}
}
public void clear() {
super.clear();
vendorInfo = null;
leaseDuration = 0;
}
@Override
public String toString() {
StringBuffer str = new StringBuffer(super.toString());
str.append(" DHCP server ").append(serverAddress);
str.append(" Vendor info ").append(vendorInfo);
str.append(" lease ").append(leaseDuration).append(" seconds");
return str.toString();
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (!(obj instanceof DhcpResults)) return false;
DhcpResults target = (DhcpResults)obj;
return super.equals((StaticIpConfiguration) obj) &&
Objects.equals(serverAddress, target.serverAddress) &&
Objects.equals(vendorInfo, target.vendorInfo) &&
leaseDuration == target.leaseDuration;
}
/** Implement the Parcelable interface */
public static final Creator<DhcpResults> CREATOR =
new Creator<DhcpResults>() {
public DhcpResults createFromParcel(Parcel in) {
DhcpResults dhcpResults = new DhcpResults();
readFromParcel(dhcpResults, in);
return dhcpResults;
}
public DhcpResults[] newArray(int size) {
return new DhcpResults[size];
}
};
/** Implement the Parcelable interface */
public void writeToParcel(Parcel dest, int flags) {
super.writeToParcel(dest, flags);
dest.writeInt(leaseDuration);
NetworkUtils.parcelInetAddress(dest, serverAddress, flags);
dest.writeString(vendorInfo);
}
private static void readFromParcel(DhcpResults dhcpResults, Parcel in) {
StaticIpConfiguration.readFromParcel(dhcpResults, in);
dhcpResults.leaseDuration = in.readInt();
dhcpResults.serverAddress = NetworkUtils.unparcelInetAddress(in);
dhcpResults.vendorInfo = in.readString();
}
// Utils for jni population - false on success
// Not part of the superclass because they're only used by the JNI iterface to the DHCP daemon.
public boolean setIpAddress(String addrString, int prefixLength) {
try {
Inet4Address addr = (Inet4Address) NetworkUtils.numericToInetAddress(addrString);
ipAddress = new LinkAddress(addr, prefixLength);
} catch (IllegalArgumentException|ClassCastException e) {
Log.e(TAG, "setIpAddress failed with addrString " + addrString + "/" + prefixLength);
return true;
}
return false;
}
public boolean setGateway(String addrString) {
try {
gateway = NetworkUtils.numericToInetAddress(addrString);
} catch (IllegalArgumentException e) {
Log.e(TAG, "setGateway failed with addrString " + addrString);
return true;
}
return false;
}
public boolean addDns(String addrString) {
if (TextUtils.isEmpty(addrString) == false) {
try {
dnsServers.add(NetworkUtils.numericToInetAddress(addrString));
} catch (IllegalArgumentException e) {
Log.e(TAG, "addDns failed with addrString " + addrString);
return true;
}
}
return false;
}
public boolean setServerAddress(String addrString) {
try {
serverAddress = NetworkUtils.numericToInetAddress(addrString);
} catch (IllegalArgumentException e) {
Log.e(TAG, "setServerAddress failed with addrString " + addrString);
return true;
}
return false;
}
public void setLeaseDuration(int duration) {
leaseDuration = duration;
}
public void setVendorInfo(String info) {
vendorInfo = info;
}
public void setDomains(String newDomains) {
domains = newDomains;
}
}
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