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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.os.AsyncTask;
import android.os.Build;
import android.os.Handler;
import android.os.Looper;
import android.os.StrictMode;
import android.util.Log;
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 com.wireguard.util.NonNullForAll;
import java.lang.ref.WeakReference;
import java.util.Locale;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatDelegate;
import androidx.preference.PreferenceManager;
import java9.util.concurrent.CompletableFuture;
@NonNullForAll
public class Application extends android.app.Application implements SharedPreferences.OnSharedPreferenceChangeListener {
public static final String USER_AGENT = String.format(Locale.ENGLISH, "WireGuard/%s (Android %d; %s; %s; %s %s; %s)", BuildConfig.VERSION_NAME, Build.VERSION.SDK_INT, Build.SUPPORTED_ABIS.length > 0 ? Build.SUPPORTED_ABIS[0] : "unknown ABI", Build.BOARD, Build.MANUFACTURER, Build.MODEL, Build.FINGERPRINT);
private static final String TAG = "WireGuard/" + Application.class.getSimpleName();
@SuppressWarnings("NullableProblems") private static WeakReference<Application> weakSelf;
private final CompletableFuture<Backend> futureBackend = new CompletableFuture<>();
@SuppressWarnings("NullableProblems") private AsyncWorker asyncWorker;
@Nullable private Backend backend;
@SuppressWarnings("NullableProblems") private ModuleLoader moduleLoader;
@SuppressWarnings("NullableProblems") private RootShell rootShell;
@SuppressWarnings("NullableProblems") private SharedPreferences sharedPreferences;
@SuppressWarnings("NullableProblems") private ToolsInstaller toolsInstaller;
@SuppressWarnings("NullableProblems") private TunnelManager tunnelManager;
public Application() {
weakSelf = new WeakReference<>(this);
}
public static Application get() {
return weakSelf.get();
}
public static AsyncWorker getAsyncWorker() {
return get().asyncWorker;
}
public static Backend getBackend() {
final Application app = get();
synchronized (app.futureBackend) {
if (app.backend == null) {
Backend backend = null;
boolean didStartRootShell = false;
if (!ModuleLoader.isModuleLoaded() && app.moduleLoader.moduleMightExist()) {
try {
app.rootShell.start();
didStartRootShell = true;
app.moduleLoader.loadModule();
} catch (final Exception ignored) {
}
}
if (!app.sharedPreferences.getBoolean("disable_kernel_module", false) && ModuleLoader.isModuleLoaded()) {
try {
if (!didStartRootShell)
app.rootShell.start();
WgQuickBackend wgQuickBackend = new WgQuickBackend(app.getApplicationContext(), app.rootShell, app.toolsInstaller);
wgQuickBackend.setMultipleTunnels(app.sharedPreferences.getBoolean("multiple_tunnels", false));
backend = wgQuickBackend;
} catch (final Exception ignored) {
}
}
if (backend == null) {
backend = new GoBackend(app.getApplicationContext());
GoBackend.setAlwaysOnCallback(() -> {
get().tunnelManager.restoreState(true).whenComplete(ExceptionLoggers.D);
});
}
app.backend = backend;
}
return app.backend;
}
}
public static CompletableFuture<Backend> getBackendAsync() {
return get().futureBackend;
}
public static ModuleLoader getModuleLoader() {
return get().moduleLoader;
}
public static RootShell getRootShell() {
return get().rootShell;
}
public static SharedPreferences getSharedPreferences() {
return get().sharedPreferences;
}
public static ToolsInstaller getToolsInstaller() {
return get().toolsInstaller;
}
public static TunnelManager getTunnelManager() {
return get().tunnelManager;
}
@Override
protected void attachBaseContext(final Context context) {
super.attachBaseContext(context);
if (BuildConfig.MIN_SDK_VERSION > Build.VERSION.SDK_INT) {
final Intent intent = new 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(new StrictMode.VmPolicy.Builder().detectAll().penaltyLog().build());
}
}
@Override
public void onCreate() {
Log.i(TAG, USER_AGENT);
super.onCreate();
asyncWorker = new AsyncWorker(AsyncTask.SERIAL_EXECUTOR, new Handler(Looper.getMainLooper()));
rootShell = new RootShell(getApplicationContext());
toolsInstaller = new ToolsInstaller(getApplicationContext(), rootShell);
moduleLoader = new ModuleLoader(getApplicationContext(), rootShell, USER_AGENT);
sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
AppCompatDelegate.setDefaultNightMode(
sharedPreferences.getBoolean("dark_theme", false) ?
AppCompatDelegate.MODE_NIGHT_YES : AppCompatDelegate.MODE_NIGHT_NO);
} else {
AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM);
}
tunnelManager = new TunnelManager(new FileConfigStore(getApplicationContext()));
tunnelManager.onCreate();
asyncWorker.supplyAsync(Application::getBackend).thenAccept(futureBackend::complete);
sharedPreferences.registerOnSharedPreferenceChangeListener(this);
}
@Override
public void onSharedPreferenceChanged(final SharedPreferences sharedPreferences, final String key) {
if ("multiple_tunnels".equals(key) && backend != null && backend instanceof WgQuickBackend)
((WgQuickBackend) backend).setMultipleTunnels(sharedPreferences.getBoolean(key, false));
}
@Override
public void onTerminate() {
sharedPreferences.unregisterOnSharedPreferenceChangeListener(this);
super.onTerminate();
}
}
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