Java tutorial
/* Copyright 2015 Philipp Adam, Manuel Caspari, Nicolas Lukaschek contact@ravenapp.org This file is part of Raven. Raven is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. Raven is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Raven. If not, see <http://www.gnu.org/licenses/>. */ package at.flack.receiver; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.BroadcastReceiver; import android.content.ContentResolver; import android.content.ContentUris; import android.content.ContentValues; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.content.res.Resources; import android.database.Cursor; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.drawable.Drawable; import android.media.RingtoneManager; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.preference.PreferenceManager; import android.provider.ContactsContract; import android.provider.ContactsContract.PhoneLookup; import android.provider.Telephony; import android.support.v4.app.NotificationCompat; import android.support.v4.app.TaskStackBuilder; import android.telephony.SmsMessage; import at.flack.MainActivity; import at.flack.R; import at.flack.activity.MessageOverview; import at.flack.ui.ContactAdapter; import at.flack.ui.RoundedImageView; import encryption.Base64; public class SmsReceiver extends BroadcastReceiver { private SharedPreferences sharedPrefs; private boolean notify; private boolean vibrate, headsup; private int led_color; private MessageOverview main = null; private static final String[] PHOTO_ID_PROJECTION = new String[] { ContactsContract.Contacts.PHOTO_ID }; private static final String[] PHOTO_BITMAP_PROJECTION = new String[] { ContactsContract.CommonDataKinds.Photo.PHOTO }; public void setMainActivityHandler(MessageOverview main) { this.main = main; } @Override public void onReceive(Context context, Intent intent) { sharedPrefs = PreferenceManager.getDefaultSharedPreferences(context); notify = sharedPrefs.getBoolean("notifications", true); vibrate = sharedPrefs.getBoolean("vibration", true); headsup = sharedPrefs.getBoolean("headsup", true); led_color = sharedPrefs.getInt("notification_light", -16776961); boolean all = sharedPrefs.getBoolean("all_sms", true); if (notify == false) return; Bundle bundle = intent.getExtras(); SmsMessage[] msgs = null; String str = ""; if (bundle != null) { Object[] pdus = (Object[]) bundle.get("pdus"); msgs = new SmsMessage[pdus.length]; for (int i = 0; i < msgs.length; i++) { msgs[i] = SmsMessage.createFromPdu((byte[]) pdus[i]); str += msgs[i].getMessageBody().toString(); str += "\n"; } NotificationCompat.Builder mBuilder; if (main != null) { main.addNewMessage(str); return; } boolean use_profile_picture = false; Bitmap profile_picture = null; String origin_name = null; try { origin_name = getContactName(context, msgs[0].getDisplayOriginatingAddress()); if (origin_name == null) origin_name = msgs[0].getDisplayOriginatingAddress(); } catch (Exception e) { } if (origin_name == null) origin_name = "Unknown"; try { profile_picture = RoundedImageView.getCroppedBitmap(Bitmap.createScaledBitmap( fetchThumbnail(context, msgs[0].getDisplayOriginatingAddress()), 200, 200, false), 300); use_profile_picture = true; } catch (Exception e) { use_profile_picture = false; } Resources res = context.getResources(); int positionOfBase64End = str.lastIndexOf("="); if (positionOfBase64End > 0 && Base64.isBase64(str.substring(0, positionOfBase64End))) { mBuilder = new NotificationCompat.Builder(context).setSmallIcon(R.drawable.raven_notification_icon) .setContentTitle(origin_name).setColor(0xFFB71C1C) .setContentText(res.getString(R.string.sms_receiver_new_encrypted)).setAutoCancel(true); if (use_profile_picture && profile_picture != null) { mBuilder = mBuilder.setLargeIcon(profile_picture); } else { mBuilder = mBuilder.setLargeIcon(convertToBitmap(origin_name, context.getResources().getDrawable(R.drawable.ic_social_person), 200, 200)); } } else if (str.toString().charAt(0) == '%' && (str.toString().length() == 10 || str.toString().length() == 9)) { int lastIndex = str.toString().lastIndexOf("="); if (lastIndex > 0 && Base64.isBase64(str.toString().substring(1, lastIndex))) { mBuilder = new NotificationCompat.Builder(context).setContentTitle(origin_name) .setColor(0xFFB71C1C) .setContentText(res.getString(R.string.sms_receiver_handshake_received)) .setSmallIcon(R.drawable.raven_notification_icon).setAutoCancel(true); if (use_profile_picture && profile_picture != null) { mBuilder = mBuilder.setLargeIcon(profile_picture); } else { mBuilder = mBuilder.setLargeIcon(convertToBitmap(origin_name, context.getResources().getDrawable(R.drawable.ic_social_person), 200, 200)); } } else { return; } } else if (str.toString().charAt(0) == '%' && str.toString().length() >= 120 && str.toString().length() < 125) { // DH Handshake int lastIndex = str.toString().lastIndexOf("="); if (lastIndex > 0 && Base64.isBase64(str.toString().substring(1, lastIndex))) { mBuilder = new NotificationCompat.Builder(context).setContentTitle(origin_name) .setColor(0xFFB71C1C) .setContentText(res.getString(R.string.sms_receiver_handshake_received)) .setSmallIcon(R.drawable.raven_notification_icon).setAutoCancel(true); if (use_profile_picture && profile_picture != null) { mBuilder = mBuilder.setLargeIcon(profile_picture); } else { mBuilder = mBuilder.setLargeIcon(convertToBitmap(origin_name, context.getResources().getDrawable(R.drawable.ic_social_person), 200, 200)); } } else { return; } } else { // unencrypted messages if (all) { mBuilder = new NotificationCompat.Builder(context).setContentTitle(origin_name) .setColor(0xFFB71C1C).setContentText(str).setAutoCancel(true) .setStyle(new NotificationCompat.BigTextStyle().bigText(str)) .setSmallIcon(R.drawable.raven_notification_icon); if (use_profile_picture && profile_picture != null) { mBuilder = mBuilder.setLargeIcon(profile_picture); } else { mBuilder = mBuilder.setLargeIcon(convertToBitmap(origin_name, context.getResources().getDrawable(R.drawable.ic_social_person), 200, 200)); } } else { return; } } Uri alarmSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); mBuilder.setSound(alarmSound); mBuilder.setLights(led_color, 750, 4000); if (vibrate) { mBuilder.setVibrate(new long[] { 0, 100, 200, 300 }); } Intent resultIntent = new Intent(context, MainActivity.class); resultIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT); resultIntent.putExtra("CONTACT_NUMBER", msgs[0].getOriginatingAddress()); TaskStackBuilder stackBuilder = TaskStackBuilder.create(context); stackBuilder.addParentStack(MainActivity.class); stackBuilder.addNextIntent(resultIntent); PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT); mBuilder.setContentIntent(resultPendingIntent); if (Build.VERSION.SDK_INT >= 16 && headsup) mBuilder.setPriority(Notification.PRIORITY_HIGH); if (Build.VERSION.SDK_INT >= 21) mBuilder.setCategory(Notification.CATEGORY_MESSAGE); final NotificationManager mNotificationManager = (NotificationManager) context .getSystemService(Context.NOTIFICATION_SERVICE); if (intent.getAction().equals("android.provider.Telephony.SMS_RECEIVED") && !MainActivity.isOnTop) mNotificationManager.notify(7, mBuilder.build()); // Save SMS if default app if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT && Telephony.Sms.getDefaultSmsPackage(context).equals(context.getPackageName())) { ContentValues values = new ContentValues(); values.put("address", msgs[0].getDisplayOriginatingAddress()); values.put("body", str.replace("\n", "").replace("\r", "")); if (intent.getAction().equals("android.provider.Telephony.SMS_RECEIVED")) context.getContentResolver().insert(Telephony.Sms.Inbox.CONTENT_URI, values); } } } public static String getContactName(Context context, String phoneNumber) { ContentResolver cr = context.getContentResolver(); Uri uri = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI, Uri.encode(phoneNumber)); Cursor cursor = cr.query(uri, new String[] { PhoneLookup.DISPLAY_NAME }, null, null, null); if (cursor == null) { return null; } String contactName = null; if (cursor.moveToFirst()) { contactName = cursor.getString(cursor.getColumnIndex(PhoneLookup.DISPLAY_NAME)); } if (cursor != null && !cursor.isClosed()) { cursor.close(); } return contactName; } private Integer fetchThumbnailId(Context context, String address) { final Uri uri = Uri.withAppendedPath(ContactsContract.CommonDataKinds.Phone.CONTENT_FILTER_URI, Uri.encode(address)); final Cursor cursor = context.getContentResolver().query(uri, PHOTO_ID_PROJECTION, null, null, ContactsContract.Contacts.DISPLAY_NAME + " ASC"); try { Integer thumbnailId = null; if (cursor.moveToFirst()) { thumbnailId = cursor.getInt(cursor.getColumnIndex(ContactsContract.Contacts.PHOTO_ID)); } return thumbnailId; } finally { cursor.close(); } } public Bitmap convertToBitmap(String name, Drawable drawable, int widthPixels, int heightPixels) { Bitmap mutableBitmap = Bitmap.createBitmap(widthPixels, heightPixels, Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(mutableBitmap); drawable.setBounds(0, 0, widthPixels, heightPixels); canvas.drawColor(ContactAdapter.colors[Math.abs(ContactAdapter.betterHashCode(name)) % ContactAdapter.colors.length]); drawable.draw(canvas); return RoundedImageView.getCroppedBitmap(mutableBitmap, 300); } public final Bitmap fetchThumbnail(Context context, String address) { Integer id = fetchThumbnailId(context, address); if (id == null) return null; final Uri uri = ContentUris.withAppendedId(ContactsContract.Data.CONTENT_URI, id); final Cursor cursor = context.getContentResolver().query(uri, PHOTO_BITMAP_PROJECTION, null, null, null); try { Bitmap thumbnail = null; if (cursor.moveToFirst()) { final byte[] thumbnailBytes = cursor.getBlob(0); if (thumbnailBytes != null) { thumbnail = BitmapFactory.decodeByteArray(thumbnailBytes, 0, thumbnailBytes.length); } } return thumbnail; } finally { cursor.close(); } } }