package org.kivy.android; import android.os.Build; import java.lang.reflect.Method; import java.lang.reflect.InvocationTargetException; import android.app.Service; import android.os.IBinder; import android.os.Bundle; import android.content.Intent; import android.content.Context; import android.util.Log; import android.app.Notification; import android.app.PendingIntent; import android.os.Process; import java.io.File; //imports for channel definition import android.app.NotificationManager; import android.app.NotificationChannel; import android.graphics.Color; import android.graphics.BitmapFactory; import android.graphics.Bitmap; import android.graphics.drawable.Icon; import android.net.wifi.WifiManager; import android.net.wifi.WifiManager.MulticastLock; public class PythonService extends Service implements Runnable { // Thread for Python code private Thread pythonThread = null; // Python environment variables private String androidPrivate; private String androidArgument; private String pythonName; private String pythonHome; private String pythonPath; private String serviceEntrypoint; // Argument to pass to Python code, private String pythonServiceArgument; public static PythonService mService = null; private Intent startIntent = null; private boolean autoRestartService = false; public void setAutoRestartService(boolean restart) { autoRestartService = restart; } public int startType() { return START_NOT_STICKY; } @Override public IBinder onBind(Intent arg0) { return null; } @Override public void onCreate() { super.onCreate(); } @Override public int onStartCommand(Intent intent, int flags, int startId) { if (pythonThread != null) { Log.v("python service", "service exists, do not start again"); return startType(); } //intent is null if OS restarts a STICKY service if (intent == null) { Context context = getApplicationContext(); intent = getThisDefaultIntent(context, ""); } startIntent = intent; Bundle extras = intent.getExtras(); androidPrivate = extras.getString("androidPrivate"); androidArgument = extras.getString("androidArgument"); serviceEntrypoint = extras.getString("serviceEntrypoint"); pythonName = extras.getString("pythonName"); pythonHome = extras.getString("pythonHome"); pythonPath = extras.getString("pythonPath"); boolean serviceStartAsForeground = ( extras.getString("serviceStartAsForeground").equals("true") ); pythonServiceArgument = extras.getString("pythonServiceArgument"); pythonThread = new Thread(this); pythonThread.start(); if (serviceStartAsForeground) { doStartForeground(extras); } return startType(); } protected int getServiceId() { return 1; } protected Intent getThisDefaultIntent(Context ctx, String pythonServiceArgument) { return null; } protected void doStartForeground(Bundle extras) { String serviceTitle = extras.getString("serviceTitle"); String serviceDescription = extras.getString("serviceDescription"); Notification notification; Context context = getApplicationContext(); Intent contextIntent = new Intent(context, PythonActivity.class); PendingIntent pIntent = PendingIntent.getActivity(context, 0, contextIntent, PendingIntent.FLAG_UPDATE_CURRENT); if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) { notification = new Notification( context.getApplicationInfo().icon, serviceTitle, System.currentTimeMillis()); try { // prevent using NotificationCompat, this saves 100kb on apk Method func = notification.getClass().getMethod( "setLatestEventInfo", Context.class, CharSequence.class, CharSequence.class, PendingIntent.class); func.invoke(notification, context, serviceTitle, serviceDescription, pIntent); } catch (NoSuchMethodException | IllegalAccessException | IllegalArgumentException | InvocationTargetException e) { } } else { // for android 8+ we need to create our own channel // https://stackoverflow.com/questions/47531742/startforeground-fail-after-upgrade-to-android-8-1 String NOTIFICATION_CHANNEL_ID = "io.unsigned.sideband.reticulum"; String channelName = "Background Service"; NotificationChannel chan = new NotificationChannel(NOTIFICATION_CHANNEL_ID, channelName, NotificationManager.IMPORTANCE_NONE); chan.setLightColor(Color.BLUE); chan.setLockscreenVisibility(Notification.VISIBILITY_SECRET); chan.setShowBadge(false); NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); manager.createNotificationChannel(chan); Notification.Builder builder = new Notification.Builder(context, NOTIFICATION_CHANNEL_ID); builder.setContentTitle("Sideband Active"); // builder.setContentText("Reticulum Active"); builder.setContentIntent(pIntent); // builder.setOngoing(true); // TODO: Generalise this Bitmap icon_bitmap = BitmapFactory.decodeFile("/data/user/0/io.unsigned.sideband/files/app/assets/notification_icon.png"); Icon service_icon = Icon.createWithBitmap(icon_bitmap); // builder.setSmallIcon(context.getApplicationInfo().icon); builder.setSmallIcon(service_icon); notification = builder.build(); } startForeground(getServiceId(), notification); } @Override public void onDestroy() { super.onDestroy(); pythonThread = null; if (autoRestartService && startIntent != null) { Log.v("python service", "service restart requested"); startService(startIntent); } Process.killProcess(Process.myPid()); } /** * Stops the task gracefully when killed. * Calling stopSelf() will trigger a onDestroy() call from the system. */ @Override public void onTaskRemoved(Intent rootIntent) { super.onTaskRemoved(rootIntent); //sticky servcie runtime/restart is managed by the OS. leave it running when app is closed if (startType() != START_STICKY) { //stopSelf(); } } @Override public void run(){ String app_root = getFilesDir().getAbsolutePath() + "/app"; File app_root_file = new File(app_root); PythonUtil.loadLibraries(app_root_file, new File(getApplicationInfo().nativeLibraryDir)); this.mService = this; nativeStart( androidPrivate, androidArgument, serviceEntrypoint, pythonName, pythonHome, pythonPath, pythonServiceArgument); stopSelf(); } // Native part public static native void nativeStart( String androidPrivate, String androidArgument, String serviceEntrypoint, String pythonName, String pythonHome, String pythonPath, String pythonServiceArgument); }