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package com.wireguard.config;
import android.databinding.BaseObservable;
import android.databinding.Bindable;
import android.databinding.Observable;
import android.os.Parcel;
import android.os.Parcelable;
import com.wireguard.android.BR;
import com.wireguard.crypto.KeyEncoding;
import com.wireguard.crypto.Keypair;
/**
* Represents the configuration for a WireGuard interface (an [Interface] block).
*/
public class Interface extends BaseObservable
implements Copyable<Interface>, Observable, Parcelable {
public static final Parcelable.Creator<Interface> CREATOR
= new Parcelable.Creator<Interface>() {
@Override
public Interface createFromParcel(final Parcel in) {
return new Interface(in);
}
@Override
public Interface[] newArray(final int size) {
return new Interface[size];
}
};
private String address;
private String dns;
private String listenPort;
private Keypair keypair;
private String mtu;
private String privateKey;
public Interface() {
// Do nothing.
}
protected Interface(final Parcel in) {
address = in.readString();
dns = in.readString();
listenPort = in.readString();
mtu = in.readString();
setPrivateKey(in.readString());
}
@Override
public Interface copy() {
final Interface copy = new Interface();
copy.copyFrom(this);
return copy;
}
@Override
public void copyFrom(final Interface source) {
if (source != null) {
address = source.address;
dns = source.dns;
listenPort = source.listenPort;
mtu = source.mtu;
setPrivateKey(source.privateKey);
} else {
address = null;
dns = null;
listenPort = null;
mtu = null;
setPrivateKey(null);
}
notifyChange();
}
@Override
public int describeContents() {
return 0;
}
public void generateKeypair() {
keypair = new Keypair();
privateKey = keypair.getPrivateKey();
notifyPropertyChanged(BR.privateKey);
notifyPropertyChanged(BR.publicKey);
}
@Bindable
public String getAddress() {
return address;
}
@Bindable
public String getDns() {
return dns;
}
@Bindable
public String getListenPort() {
return listenPort;
}
@Bindable
public String getMtu() {
return mtu;
}
@Bindable
public String getPrivateKey() {
return privateKey;
}
@Bindable
public String getPublicKey() {
return keypair != null ? keypair.getPublicKey() : null;
}
public void parse(final String line) {
final Attribute key = Attribute.match(line);
if (key == Attribute.ADDRESS)
setAddress(key.parseFrom(line));
else if (key == Attribute.DNS)
setDns(key.parseFrom(line));
else if (key == Attribute.LISTEN_PORT)
setListenPort(key.parseFrom(line));
else if (key == Attribute.MTU)
setMtu(key.parseFrom(line));
else if (key == Attribute.PRIVATE_KEY)
setPrivateKey(key.parseFrom(line));
else
throw new IllegalArgumentException(line);
}
public void setAddress(String address) {
if (address != null && address.isEmpty())
address = null;
this.address = address;
notifyPropertyChanged(BR.address);
}
public void setDns(String dns) {
if (dns != null && dns.isEmpty())
dns = null;
this.dns = dns;
notifyPropertyChanged(BR.dns);
}
public void setListenPort(String listenPort) {
if (listenPort != null && listenPort.isEmpty())
listenPort = null;
this.listenPort = listenPort;
notifyPropertyChanged(BR.listenPort);
}
public void setMtu(String mtu) {
if (mtu != null && mtu.isEmpty())
mtu = null;
this.mtu = mtu;
notifyPropertyChanged(BR.mtu);
}
public void setPrivateKey(String privateKey) {
if (privateKey != null && privateKey.isEmpty())
privateKey = null;
this.privateKey = privateKey;
if (privateKey != null && privateKey.length() == KeyEncoding.KEY_LENGTH_BASE64) {
try {
keypair = new Keypair(privateKey);
} catch (final IllegalArgumentException ignored) {
keypair = null;
}
} else {
keypair = null;
}
notifyPropertyChanged(BR.privateKey);
notifyPropertyChanged(BR.publicKey);
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder().append("[Interface]\n");
if (address != null)
sb.append(Attribute.ADDRESS.composeWith(address));
if (dns != null)
sb.append(Attribute.DNS.composeWith(dns));
if (listenPort != null)
sb.append(Attribute.LISTEN_PORT.composeWith(listenPort));
if (mtu != null)
sb.append(Attribute.MTU.composeWith(mtu));
if (privateKey != null)
sb.append(Attribute.PRIVATE_KEY.composeWith(privateKey));
return sb.toString();
}
@Override
public void writeToParcel(final Parcel dest, final int flags) {
dest.writeString(address);
dest.writeString(dns);
dest.writeString(listenPort);
dest.writeString(mtu);
dest.writeString(privateKey);
}
}
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