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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.os.Build
import android.os.StrictMode
import android.os.StrictMode.ThreadPolicy
import android.os.StrictMode.VmPolicy
import android.util.Log
import androidx.appcompat.app.AppCompatDelegate
import androidx.datastore.DataStore
import androidx.datastore.preferences.Preferences
import androidx.datastore.preferences.createDataStore
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.ModuleLoader
import com.wireguard.android.util.RootShell
import com.wireguard.android.util.ToolsInstaller
import com.wireguard.android.util.UserKnobs
import com.wireguard.android.util.applicationScope
import kotlinx.coroutines.CompletableDeferred
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.Job
import kotlinx.coroutines.cancel
import kotlinx.coroutines.flow.first
import kotlinx.coroutines.flow.launchIn
import kotlinx.coroutines.flow.onEach
import kotlinx.coroutines.launch
import java.lang.ref.WeakReference
import java.util.Locale
class Application : android.app.Application() {
private val futureBackend = CompletableDeferred<Backend>()
private val coroutineScope = CoroutineScope(Job() + Dispatchers.Main.immediate)
private var backend: Backend? = null
private lateinit var moduleLoader: ModuleLoader
private lateinit var rootShell: RootShell
private lateinit var preferencesDataStore: DataStore<Preferences>
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())
StrictMode.setThreadPolicy(ThreadPolicy.Builder().detectAll().penaltyLog().build())
}
}
private suspend fun determineBackend(): Backend {
var backend: Backend? = null
var didStartRootShell = false
if (!ModuleLoader.isModuleLoaded() && moduleLoader.moduleMightExist()) {
try {
rootShell.start()
didStartRootShell = true
moduleLoader.loadModule()
} catch (ignored: Exception) {
}
}
if (!UserKnobs.disableKernelModule.first() && ModuleLoader.isModuleLoaded()) {
try {
if (!didStartRootShell)
rootShell.start()
val wgQuickBackend = WgQuickBackend(applicationContext, rootShell, toolsInstaller)
wgQuickBackend.setMultipleTunnels(UserKnobs.multipleTunnels.first())
backend = wgQuickBackend
UserKnobs.multipleTunnels.onEach {
wgQuickBackend.setMultipleTunnels(it)
}.launchIn(coroutineScope)
} catch (ignored: Exception) {
}
}
if (backend == null) {
backend = GoBackend(applicationContext)
GoBackend.setAlwaysOnCallback { get().applicationScope.launch { get().tunnelManager.restoreState(true) } }
}
return backend
}
override fun onCreate() {
Log.i(TAG, USER_AGENT)
super.onCreate()
rootShell = RootShell(applicationContext)
toolsInstaller = ToolsInstaller(applicationContext, rootShell)
moduleLoader = ModuleLoader(applicationContext, rootShell, USER_AGENT)
preferencesDataStore = applicationContext.createDataStore(name = "settings")
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
coroutineScope.launch {
AppCompatDelegate.setDefaultNightMode(
if (UserKnobs.darkTheme.first()) AppCompatDelegate.MODE_NIGHT_YES else AppCompatDelegate.MODE_NIGHT_NO)
}
} else {
AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM)
}
tunnelManager = TunnelManager(FileConfigStore(applicationContext))
tunnelManager.onCreate()
coroutineScope.launch(Dispatchers.IO) {
try {
backend = determineBackend()
futureBackend.complete(backend!!)
} catch (e: Throwable) {
Log.e(TAG, Log.getStackTraceString(e))
}
}
}
override fun onTerminate() {
coroutineScope.cancel()
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
suspend fun getBackend() = get().futureBackend.await()
@JvmStatic
fun getModuleLoader() = get().moduleLoader
@JvmStatic
fun getRootShell() = get().rootShell
@JvmStatic
fun getPreferencesDataStore() = get().preferencesDataStore
@JvmStatic
fun getToolsInstaller() = get().toolsInstaller
@JvmStatic
fun getTunnelManager() = get().tunnelManager
@JvmStatic
fun getCoroutineScope() = get().coroutineScope
}
init {
weakSelf = WeakReference(this)
}
}
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