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/*
* Copyright © 2017-2021 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.viewmodel
import android.os.Parcel
import android.os.Parcelable
import androidx.databinding.BaseObservable
import androidx.databinding.Bindable
import androidx.databinding.ObservableArrayList
import androidx.databinding.ObservableList
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
class InterfaceProxy : BaseObservable, Parcelable {
@get:Bindable
val excludedApplications: ObservableList<String> = ObservableArrayList()
@get:Bindable
val includedApplications: ObservableList<String> = ObservableArrayList()
@get:Bindable
var addresses: String = ""
set(value) {
field = value
notifyPropertyChanged(BR.addresses)
}
@get:Bindable
var dnsServers: String = ""
set(value) {
field = value
notifyPropertyChanged(BR.dnsServers)
}
@get:Bindable
var listenPort: String = ""
set(value) {
field = value
notifyPropertyChanged(BR.listenPort)
}
@get:Bindable
var mtu: String = ""
set(value) {
field = value
notifyPropertyChanged(BR.mtu)
}
@get:Bindable
var privateKey: String = ""
set(value) {
field = value
notifyPropertyChanged(BR.privateKey)
notifyPropertyChanged(BR.publicKey)
}
@get:Bindable
val publicKey: String
get() = try {
KeyPair(Key.fromBase64(privateKey)).publicKey.toBase64()
} catch (ignored: KeyFormatException) {
""
}
private constructor(parcel: Parcel) {
addresses = parcel.readString() ?: ""
dnsServers = parcel.readString() ?: ""
parcel.readStringList(excludedApplications)
parcel.readStringList(includedApplications)
listenPort = parcel.readString() ?: ""
mtu = parcel.readString() ?: ""
privateKey = parcel.readString() ?: ""
}
constructor(other: Interface) {
addresses = Attribute.join(other.addresses)
val dnsServerStrings = other.dnsServers.map { it.hostAddress }.plus(other.dnsSearchDomains)
dnsServers = Attribute.join(dnsServerStrings)
excludedApplications.addAll(other.excludedApplications)
includedApplications.addAll(other.includedApplications)
listenPort = other.listenPort.map { it.toString() }.orElse("")
mtu = other.mtu.map { it.toString() }.orElse("")
val keyPair = other.keyPair
privateKey = keyPair.privateKey.toBase64()
}
constructor()
override fun describeContents() = 0
fun generateKeyPair() {
val keyPair = KeyPair()
privateKey = keyPair.privateKey.toBase64()
notifyPropertyChanged(BR.privateKey)
notifyPropertyChanged(BR.publicKey)
}
@Throws(BadConfigException::class)
fun resolve(): Interface {
val builder = Interface.Builder()
if (addresses.isNotEmpty()) builder.parseAddresses(addresses)
if (dnsServers.isNotEmpty()) builder.parseDnsServers(dnsServers)
if (excludedApplications.isNotEmpty()) builder.excludeApplications(excludedApplications)
if (includedApplications.isNotEmpty()) builder.includeApplications(includedApplications)
if (listenPort.isNotEmpty()) builder.parseListenPort(listenPort)
if (mtu.isNotEmpty()) builder.parseMtu(mtu)
if (privateKey.isNotEmpty()) builder.parsePrivateKey(privateKey)
return builder.build()
}
override fun writeToParcel(dest: Parcel, flags: Int) {
dest.writeString(addresses)
dest.writeString(dnsServers)
dest.writeStringList(excludedApplications)
dest.writeStringList(includedApplications)
dest.writeString(listenPort)
dest.writeString(mtu)
dest.writeString(privateKey)
}
private class InterfaceProxyCreator : Parcelable.Creator<InterfaceProxy> {
override fun createFromParcel(parcel: Parcel): InterfaceProxy {
return InterfaceProxy(parcel)
}
override fun newArray(size: Int): Array<InterfaceProxy?> {
return arrayOfNulls(size)
}
}
companion object {
@JvmField
val CREATOR: Parcelable.Creator<InterfaceProxy> = InterfaceProxyCreator()
}
}
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