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/*
* Copyright © 2017-2023 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.viewmodel
import android.net.Uri
import android.os.Build
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
object Constants {
const val HTTP_PROXY_NONE = "None"
const val HTTP_PROXY_MANUAL = "Manual"
const val HTTP_PROXY_PAC = "Proxy Auto-Config"
}
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 httpProxyMenu: String = ""
set(value) {
field = value
notifyPropertyChanged(BR.httpProxyMenu)
notifyPropertyChanged(BR.httpProxyManualVisibility)
notifyPropertyChanged(BR.httpProxyPacVisibility)
}
@get:Bindable
var httpProxyManualVisibility: Int = 0
get() = if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) android.view.View.GONE else (if (httpProxyMenu == Constants.HTTP_PROXY_MANUAL) android.view.View.VISIBLE else android.view.View.GONE)
@get:Bindable
var httpProxyHostname: String = ""
set(value) {
field = value
notifyPropertyChanged(BR.httpProxyHostname)
}
@get:Bindable
var httpProxyPort: String = ""
set(value) {
field = value
notifyPropertyChanged(BR.httpProxyPort)
}
@get:Bindable
var httpProxyPac: String = ""
set(value) {
field = value
notifyPropertyChanged(BR.httpProxyPac)
}
@get:Bindable
var httpProxyPacVisibility: Int = 0
get() = if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) android.view.View.GONE else (if (httpProxyMenu == Constants.HTTP_PROXY_PAC) android.view.View.VISIBLE else android.view.View.GONE)
@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() ?: ""
httpProxyMenu = parcel.readString() ?: ""
httpProxyHostname = parcel.readString() ?: ""
httpProxyPort = parcel.readString() ?: ""
httpProxyPac = 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("")
httpProxyHostname = other.httpProxy.map { if (it.getHost().startsWith('[') && it.getHost().endsWith(']')) it.getHost().substring(1, it.getHost().length-1) else it.getHost() }.orElse("")
httpProxyPort = other.httpProxy.map { if (it.getPort() <= 0) "8080" else it.getPort().toString() }.orElse("")
httpProxyPac = other.httpProxy.map { it.getPacFileUrl().toString() }.orElse("")
httpProxyMenu = other.httpProxy.map { if (it.getPacFileUrl() != null && it.getPacFileUrl() != Uri.EMPTY) Constants.HTTP_PROXY_PAC else if (it.getHost() != "") Constants.HTTP_PROXY_MANUAL else Constants.HTTP_PROXY_NONE }.orElse(Constants.HTTP_PROXY_NONE)
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 (Constants.HTTP_PROXY_MANUAL.equals(httpProxyMenu) && httpProxyHostname.isNotEmpty()) {
var httpProxy: String
if (httpProxyHostname.contains(":")) {
httpProxy = "[" + httpProxyHostname + "]"
} else {
httpProxy = httpProxyHostname
}
if (httpProxyPort.isNotEmpty()) {
httpProxy += ":" + httpProxyPort;
}
builder.parseHttpProxy(httpProxy)
} else if (Constants.HTTP_PROXY_PAC.equals(httpProxyMenu) && httpProxyPac.isNotEmpty()) {
builder.parseHttpProxy("pac:" + httpProxyPac)
}
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(httpProxyMenu)
dest.writeString(httpProxyHostname)
dest.writeString(httpProxyPort)
dest.writeString(httpProxyPac)
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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