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/*
* Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.viewmodel;
import androidx.databinding.BaseObservable;
import androidx.databinding.Bindable;
import androidx.databinding.ObservableArrayList;
import androidx.databinding.ObservableList;
import android.os.Parcel;
import android.os.Parcelable;
import com.wireguard.android.BR;
import com.wireguard.config.Attribute;
import com.wireguard.config.BadConfigException;
import com.wireguard.config.Interface;
import com.wireguard.crypto.Key;
import com.wireguard.crypto.KeyFormatException;
import com.wireguard.crypto.KeyPair;
import java.net.InetAddress;
import java.util.List;
import java9.util.stream.Collectors;
import java9.util.stream.StreamSupport;
public class InterfaceProxy extends BaseObservable implements Parcelable {
public static final Parcelable.Creator<InterfaceProxy> CREATOR = new InterfaceProxyCreator();
private final ObservableList<String> excludedApplications = new ObservableArrayList<>();
private String addresses;
private String dnsServers;
private String listenPort;
private String mtu;
private String privateKey;
private String publicKey;
private InterfaceProxy(final Parcel in) {
addresses = in.readString();
dnsServers = in.readString();
in.readStringList(excludedApplications);
listenPort = in.readString();
mtu = in.readString();
privateKey = in.readString();
publicKey = in.readString();
}
public InterfaceProxy(final Interface other) {
addresses = Attribute.join(other.getAddresses());
final List<String> dnsServerStrings = StreamSupport.stream(other.getDnsServers())
.map(InetAddress::getHostAddress)
.collect(Collectors.toUnmodifiableList());
dnsServers = Attribute.join(dnsServerStrings);
excludedApplications.addAll(other.getExcludedApplications());
listenPort = other.getListenPort().map(String::valueOf).orElse("");
mtu = other.getMtu().map(String::valueOf).orElse("");
final KeyPair keyPair = other.getKeyPair();
privateKey = keyPair.getPrivateKey().toBase64();
publicKey = keyPair.getPublicKey().toBase64();
}
public InterfaceProxy() {
addresses = "";
dnsServers = "";
listenPort = "";
mtu = "";
privateKey = "";
publicKey = "";
}
@Override
public int describeContents() {
return 0;
}
public void generateKeyPair() {
final KeyPair keyPair = new KeyPair();
privateKey = keyPair.getPrivateKey().toBase64();
publicKey = keyPair.getPublicKey().toBase64();
notifyPropertyChanged(BR.privateKey);
notifyPropertyChanged(BR.publicKey);
}
@Bindable
public String getAddresses() {
return addresses;
}
@Bindable
public String getDnsServers() {
return dnsServers;
}
public ObservableList<String> getExcludedApplications() {
return excludedApplications;
}
@Bindable
public String getListenPort() {
return listenPort;
}
@Bindable
public String getMtu() {
return mtu;
}
@Bindable
public String getPrivateKey() {
return privateKey;
}
@Bindable
public String getPublicKey() {
return publicKey;
}
public Interface resolve() throws BadConfigException {
final Interface.Builder builder = new Interface.Builder();
if (!addresses.isEmpty())
builder.parseAddresses(addresses);
if (!dnsServers.isEmpty())
builder.parseDnsServers(dnsServers);
if (!excludedApplications.isEmpty())
builder.excludeApplications(excludedApplications);
if (!listenPort.isEmpty())
builder.parseListenPort(listenPort);
if (!mtu.isEmpty())
builder.parseMtu(mtu);
if (!privateKey.isEmpty())
builder.parsePrivateKey(privateKey);
return builder.build();
}
public void setAddresses(final String addresses) {
this.addresses = addresses;
notifyPropertyChanged(BR.addresses);
}
public void setDnsServers(final String dnsServers) {
this.dnsServers = dnsServers;
notifyPropertyChanged(BR.dnsServers);
}
public void setListenPort(final String listenPort) {
this.listenPort = listenPort;
notifyPropertyChanged(BR.listenPort);
}
public void setMtu(final String mtu) {
this.mtu = mtu;
notifyPropertyChanged(BR.mtu);
}
public void setPrivateKey(final String privateKey) {
this.privateKey = privateKey;
try {
publicKey = new KeyPair(Key.fromBase64(privateKey)).getPublicKey().toBase64();
} catch (final KeyFormatException ignored) {
publicKey = "";
}
notifyPropertyChanged(BR.privateKey);
notifyPropertyChanged(BR.publicKey);
}
@Override
public void writeToParcel(final Parcel dest, final int flags) {
dest.writeString(addresses);
dest.writeString(dnsServers);
dest.writeStringList(excludedApplications);
dest.writeString(listenPort);
dest.writeString(mtu);
dest.writeString(privateKey);
dest.writeString(publicKey);
}
private static class InterfaceProxyCreator implements Parcelable.Creator<InterfaceProxy> {
@Override
public InterfaceProxy createFromParcel(final Parcel in) {
return new InterfaceProxy(in);
}
@Override
public InterfaceProxy[] newArray(final int size) {
return new InterfaceProxy[size];
}
}
}
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