ru.glesik.nostrangersms.SMSReceiver.java Source code

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Here is the source code for ru.glesik.nostrangersms.SMSReceiver.java

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/*
 * This file is part of No Stranger SMS.
 *
 * No Stranger SMS 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.
 *
 * No Stranger SMS 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 No Stranger SMS.  If not, see <http://www.gnu.org/licenses/>.
 */

package ru.glesik.nostrangersms;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;

import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.BaseColumns;
import android.provider.ContactsContract;
import android.support.v4.app.NotificationCompat;
import android.telephony.SmsMessage;

public class SMSReceiver extends BroadcastReceiver {
    public SMSReceiver() {
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals("android.provider.Telephony.SMS_RECEIVED")) {
            Bundle bundle = intent.getExtras();
            if (bundle != null) {
                // Get SMS objects.
                Object[] pdus = (Object[]) bundle.get("pdus");
                if (pdus.length == 0) {
                    return;
                }
                // Large message might be broken into many.
                SmsMessage[] messages = new SmsMessage[pdus.length];
                StringBuilder sb = new StringBuilder();
                for (int i = 0; i < pdus.length; i++) {
                    messages[i] = SmsMessage.createFromPdu((byte[]) pdus[i]);
                    sb.append(messages[i].getMessageBody());
                }
                String sender = messages[0].getOriginatingAddress();
                if (!(getContactDisplayNameByNumber(context, sender).equals(""))) {
                    // Contact with this number exists in address book: do nothing.
                } else {
                    // Contact not in address book: log message and don't let it through.
                    String message = sb.toString();
                    // Prevent other broadcast receivers from receiving broadcast.
                    abortBroadcast();
                    SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm'Z'"); // ISO 8601, Local time zone.
                    dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
                    String date = dateFormat.format(new Date()); // Current time in UTC.
                    DatabaseHandler db = new DatabaseHandler(context);
                    db.addSms(new SMSMessage(date, sender, message), 0); // 0 is for no limit.
                    // TODO: delete oldest messages
                    NotificationManager mNotificationManager = (NotificationManager) context
                            .getSystemService(Context.NOTIFICATION_SERVICE);
                    int icon;
                    icon = R.drawable.ic_stat_sad_sms;
                    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context).setSmallIcon(icon)
                            .setContentTitle(sender).setContentText(message)
                            .setPriority(NotificationCompat.PRIORITY_LOW).setOnlyAlertOnce(true);
                    // TODO: Optional light notification.
                    Intent ni = new Intent(context, JunkSMSList.class);
                    ni.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
                    PendingIntent pi = PendingIntent.getActivity(context, 0, ni, 0);
                    mBuilder.setContentIntent(pi);
                    mBuilder.setAutoCancel(true);
                    mNotificationManager.notify(777, mBuilder.build());
                }
            }
        }
    }

    public String getContactDisplayNameByNumber(Context context, String number) {
        Uri uri = Uri.withAppendedPath(ContactsContract.PhoneLookup.CONTENT_FILTER_URI, Uri.encode(number));
        String name = "";
        ContentResolver contentResolver = context.getContentResolver();
        Cursor contactLookup = contentResolver.query(uri,
                new String[] { BaseColumns._ID, ContactsContract.PhoneLookup.DISPLAY_NAME }, null, null, null);
        try {
            if (contactLookup != null && contactLookup.getCount() > 0) {
                contactLookup.moveToNext();
                name = contactLookup.getString(contactLookup.getColumnIndex(ContactsContract.Data.DISPLAY_NAME));
            }
        } finally {
            if (contactLookup != null) {
                contactLookup.close();
            }
        }
        return name;
    }
}