2015-06-03 12:17:24 -07:00

95 lines
3.5 KiB
Java

/*
* Copyright (C) 2015 Open Whisper Systems
*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.thoughtcrime.securesms.util;
import android.annotation.SuppressLint;
import android.content.Intent;
import android.os.Bundle;
import android.provider.Telephony;
import android.telephony.PhoneNumberUtils;
import java.io.ByteArrayOutputStream;
import java.lang.reflect.Method;
import java.util.Calendar;
import java.util.GregorianCalendar;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
public class SmsUtil {
private static byte reverseByte(byte b) {
return (byte) ((b & 0xF0) >> 4 | (b & 0x0F) << 4);
}
/*
credit :D
http://stackoverflow.com/a/12338541
*/
@SuppressWarnings("unchecked")
public static byte[] buildSmsPdu(String senderPstnNumber, String body) throws Exception{
byte[] scBytes = PhoneNumberUtils.networkPortionToCalledPartyBCD("0000000000");
byte[] senderBytes = PhoneNumberUtils.networkPortionToCalledPartyBCD(senderPstnNumber);
int lsmcs = scBytes.length;
byte[] dateBytes = new byte[7];
Calendar calendar = new GregorianCalendar();
dateBytes[0] = reverseByte((byte) (calendar.get(Calendar.YEAR)));
dateBytes[1] = reverseByte((byte) (calendar.get(Calendar.MONTH) + 1));
dateBytes[2] = reverseByte((byte) (calendar.get(Calendar.DAY_OF_MONTH)));
dateBytes[3] = reverseByte((byte) (calendar.get(Calendar.HOUR_OF_DAY)));
dateBytes[4] = reverseByte((byte) (calendar.get(Calendar.MINUTE)));
dateBytes[5] = reverseByte((byte) (calendar.get(Calendar.SECOND)));
dateBytes[6] = reverseByte((byte) ((calendar.get(Calendar.ZONE_OFFSET) + calendar.get(Calendar.DST_OFFSET)) / (60 * 1000 * 15)));
ByteArrayOutputStream bo = new ByteArrayOutputStream();
bo.write(lsmcs);
bo.write(scBytes);
bo.write(0x04);
bo.write((byte) senderPstnNumber.length());
bo.write(senderBytes);
bo.write(0x00);
bo.write(0x00);
bo.write(dateBytes);
String sReflectedClassName = "com.android.internal.telephony.GsmAlphabet";
Class cReflectedNFCExtras = Class.forName(sReflectedClassName);
Method stringToGsm7BitPacked = cReflectedNFCExtras.getMethod("stringToGsm7BitPacked", new Class[] { String.class });
stringToGsm7BitPacked.setAccessible(true);
byte[] bodybytes = (byte[]) stringToGsm7BitPacked.invoke(null, body);
bo.write(bodybytes);
return bo.toByteArray();
}
@SuppressLint("NewApi")
public static Intent buildSmsReceivedIntent(String senderPstnNumber, String smsBody) throws Exception {
final Intent smsIntent = mock(Intent.class);
final Bundle smsExtras = new Bundle();
final byte[] smsPdu = SmsUtil.buildSmsPdu(senderPstnNumber, smsBody);
smsExtras.putSerializable("pdus", new Object[]{smsPdu});
when(smsIntent.getAction()).thenReturn(Telephony.Sms.Intents.SMS_RECEIVED_ACTION);
when(smsIntent.getExtras()).thenReturn(smsExtras);
return smsIntent;
}
}