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package com.wireguard.config;
import android.databinding.BaseObservable;
import android.databinding.Bindable;
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 Parcelable {
public static final Creator<Interface> CREATOR = new 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[] addressList;
private String[] dnsList;
private Keypair keypair;
private String listenPort;
private String mtu;
private String privateKey;
public Interface() {
addressList = new String[0];
dnsList = new String[0];
}
private Interface(final Parcel in) {
addressList = in.createStringArray();
dnsList = in.createStringArray();
listenPort = in.readString();
mtu = in.readString();
setPrivateKey(in.readString());
}
@Override
public int describeContents() {
return 0;
}
public void generateKeypair() {
keypair = new Keypair();
privateKey = keypair.getPrivateKey();
notifyPropertyChanged(BR.privateKey);
notifyPropertyChanged(BR.publicKey);
}
@Bindable
public String getAddressString() {
return Attribute.listToString(addressList);
}
@Bindable
public String[] getAddresses() {
return addressList;
}
@Bindable
public String getDnsString() {
return Attribute.listToString(dnsList);
}
@Bindable
public String[] getDnses() {
return dnsList;
}
@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)
addAddresses(key.parseList(line));
else if (key == Attribute.DNS)
addDnses(key.parseList(line));
else if (key == Attribute.LISTEN_PORT)
setListenPort(key.parse(line));
else if (key == Attribute.MTU)
setMtu(key.parse(line));
else if (key == Attribute.PRIVATE_KEY)
setPrivateKey(key.parse(line));
else
throw new IllegalArgumentException(line);
}
public void addAddresses(String[] addresses) {
if (addresses == null || addresses.length == 0)
return;
String[] both = new String[addresses.length + this.addressList.length];
System.arraycopy(this.addressList, 0, both, 0, this.addressList.length);
System.arraycopy(addresses, 0, both, this.addressList.length, addresses.length);
setAddresses(both);
}
public void setAddresses(String[] addresses) {
if (addresses == null)
addresses = new String[0];
this.addressList = addresses;
notifyPropertyChanged(BR.addresses);
}
public void setAddressString(String addressString) {
setAddresses(Attribute.stringToList(addressString));
}
public void addDnses(String[] dnses) {
if (dnses == null || dnses.length == 0)
return;
String[] both = new String[dnses.length + this.dnsList.length];
System.arraycopy(this.dnsList, 0, both, 0, this.dnsList.length);
System.arraycopy(dnses, 0, both, this.dnsList.length, dnses.length);
setDnses(both);
}
public void setDnses(String[] dnses) {
if (dnses == null)
dnses = new String[0];
this.dnsList = dnses;
notifyPropertyChanged(BR.dnses);
}
public void setDnsString(String dnsString) {
setDnses(Attribute.stringToList(dnsString));
}
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 (addressList != null && addressList.length > 0)
sb.append(Attribute.ADDRESS.composeWith(addressList));
if (dnsList != null && dnsList.length > 0)
sb.append(Attribute.DNS.composeWith(dnsList));
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.writeStringArray(addressList);
dest.writeStringArray(dnsList);
dest.writeString(listenPort);
dest.writeString(mtu);
dest.writeString(privateKey);
}
}
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