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/*
* Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android
import android.content.Context
import android.content.Intent
import android.content.SharedPreferences
import android.content.SharedPreferences.OnSharedPreferenceChangeListener
import android.os.AsyncTask
import android.os.Build
import android.os.Handler
import android.os.Looper
import android.os.StrictMode
import android.os.StrictMode.VmPolicy
import android.util.Log
import androidx.appcompat.app.AppCompatDelegate
import androidx.preference.PreferenceManager
import com.wireguard.android.backend.Backend
import com.wireguard.android.backend.GoBackend
import com.wireguard.android.backend.WgQuickBackend
import com.wireguard.android.configStore.FileConfigStore
import com.wireguard.android.model.TunnelManager
import com.wireguard.android.util.AsyncWorker
import com.wireguard.android.util.ExceptionLoggers
import com.wireguard.android.util.ModuleLoader
import com.wireguard.android.util.RootShell
import com.wireguard.android.util.ToolsInstaller
import java9.util.concurrent.CompletableFuture
import java.lang.ref.WeakReference
import java.util.Locale
class Application : android.app.Application(), OnSharedPreferenceChangeListener {
private val futureBackend = CompletableFuture<Backend>()
private lateinit var asyncWorker: AsyncWorker
private var backend: Backend? = null
private lateinit var moduleLoader: ModuleLoader
private lateinit var rootShell: RootShell
private lateinit var sharedPreferences: SharedPreferences
private lateinit var toolsInstaller: ToolsInstaller
private lateinit var tunnelManager: TunnelManager
override fun attachBaseContext(context: Context) {
super.attachBaseContext(context)
if (BuildConfig.MIN_SDK_VERSION > Build.VERSION.SDK_INT) {
val intent = Intent(Intent.ACTION_MAIN)
intent.addCategory(Intent.CATEGORY_HOME)
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK)
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
startActivity(intent)
System.exit(0)
}
if (BuildConfig.DEBUG) {
StrictMode.setVmPolicy(VmPolicy.Builder().detectAll().penaltyLog().build())
}
}
override fun onCreate() {
Log.i(TAG, USER_AGENT)
super.onCreate()
asyncWorker = AsyncWorker(AsyncTask.SERIAL_EXECUTOR, Handler(Looper.getMainLooper()))
rootShell = RootShell(applicationContext)
toolsInstaller = ToolsInstaller(applicationContext, rootShell)
moduleLoader = ModuleLoader(applicationContext, rootShell, USER_AGENT)
sharedPreferences = PreferenceManager.getDefaultSharedPreferences(applicationContext)
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
AppCompatDelegate.setDefaultNightMode(
if (sharedPreferences.getBoolean("dark_theme", false)) AppCompatDelegate.MODE_NIGHT_YES else AppCompatDelegate.MODE_NIGHT_NO)
} else {
AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM)
}
tunnelManager = TunnelManager(FileConfigStore(applicationContext))
tunnelManager.onCreate()
asyncWorker.supplyAsync(Companion::getBackend).thenAccept { futureBackend.complete(it) }
sharedPreferences.registerOnSharedPreferenceChangeListener(this)
}
override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences, key: String) {
if ("multiple_tunnels" == key && backend != null && backend is WgQuickBackend)
(backend as WgQuickBackend).setMultipleTunnels(sharedPreferences.getBoolean(key, false))
}
override fun onTerminate() {
sharedPreferences.unregisterOnSharedPreferenceChangeListener(this)
super.onTerminate()
}
companion object {
val USER_AGENT = String.format(Locale.ENGLISH, "WireGuard/%s (Android %d; %s; %s; %s %s; %s)", BuildConfig.VERSION_NAME, Build.VERSION.SDK_INT, if (Build.SUPPORTED_ABIS.isNotEmpty()) Build.SUPPORTED_ABIS[0] else "unknown ABI", Build.BOARD, Build.MANUFACTURER, Build.MODEL, Build.FINGERPRINT)
private const val TAG = "WireGuard/Application"
private lateinit var weakSelf: WeakReference<Application>
@JvmStatic
fun get(): Application {
return weakSelf.get()!!
}
@JvmStatic
fun getAsyncWorker() = get().asyncWorker
@JvmStatic
fun getBackend(): Backend {
val app = get()
synchronized(app.futureBackend) {
if (app.backend == null) {
var backend: Backend? = null
var didStartRootShell = false
if (!ModuleLoader.isModuleLoaded() && app.moduleLoader.moduleMightExist()) {
try {
app.rootShell.start()
didStartRootShell = true
app.moduleLoader.loadModule()
} catch (ignored: Exception) {
}
}
if (!app.sharedPreferences.getBoolean("disable_kernel_module", false) && ModuleLoader.isModuleLoaded()) {
try {
if (!didStartRootShell)
app.rootShell.start()
val wgQuickBackend = WgQuickBackend(app.applicationContext, app.rootShell, app.toolsInstaller)
wgQuickBackend.setMultipleTunnels(app.sharedPreferences.getBoolean("multiple_tunnels", false))
backend = wgQuickBackend
} catch (ignored: Exception) {
}
}
if (backend == null) {
backend = GoBackend(app.applicationContext)
GoBackend.setAlwaysOnCallback { get().tunnelManager.restoreState(true).whenComplete(ExceptionLoggers.D) }
}
app.backend = backend
}
return app.backend!!
}
}
@JvmStatic
fun getBackendAsync() = get().futureBackend
@JvmStatic
fun getModuleLoader() = get().moduleLoader
@JvmStatic
fun getRootShell() = get().rootShell
@JvmStatic
fun getSharedPreferences() = get().sharedPreferences
@JvmStatic
fun getToolsInstaller() = get().toolsInstaller
@JvmStatic
fun getTunnelManager() = get().tunnelManager
}
init {
weakSelf = WeakReference(this)
}
}
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