session-android/src/org/thoughtcrime/securesms/mms/IncomingLollipopMmsConnection.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.mms;

import android.annotation.TargetApi;
import android.content.Context;
import android.content.Intent;
import android.os.Build.VERSION;
import android.os.Build.VERSION_CODES;
import android.support.annotation.Nullable;
import android.telephony.SmsManager;
import android.util.Log;

import org.thoughtcrime.securesms.providers.MmsBodyProvider;
import org.thoughtcrime.securesms.util.Hex;
import org.thoughtcrime.securesms.util.Util;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.concurrent.TimeoutException;

import ws.com.google.android.mms.MmsException;
import ws.com.google.android.mms.pdu.PduParser;
import ws.com.google.android.mms.pdu.RetrieveConf;

public class IncomingLollipopMmsConnection extends LollipopMmsConnection implements IncomingMmsConnection {
  public  static final String ACTION = IncomingLollipopMmsConnection.class.getCanonicalName() + "MMS_DOWNLOADED_ACTION";
  private static final String TAG    = IncomingLollipopMmsConnection.class.getSimpleName();

  public IncomingLollipopMmsConnection(Context context) {
    super(context, ACTION);
  }

  @TargetApi(VERSION_CODES.LOLLIPOP)
  @Override
  public synchronized void onResult(Context context, Intent intent) {
    if (VERSION.SDK_INT >= VERSION_CODES.LOLLIPOP_MR1) {
      Log.w(TAG, "HTTP status: " + intent.getIntExtra(SmsManager.EXTRA_MMS_HTTP_STATUS, -1));
    }
    Log.w(TAG, "code: " + getResultCode() + ", result string: " + getResultData());
  }

  @Override
  @TargetApi(VERSION_CODES.LOLLIPOP)
  public synchronized @Nullable RetrieveConf retrieve(String contentLocation, byte[] transactionId) throws MmsException {
    beginTransaction();

    try {
      MmsBodyProvider.Pointer pointer = MmsBodyProvider.makeTemporaryPointer(getContext());

      Log.w(TAG, "downloading multimedia from " + contentLocation + " to " + pointer.getUri());
      SmsManager.getDefault().downloadMultimediaMessage(getContext(),
                                                        contentLocation,
                                                        pointer.getUri(),
                                                        null,
                                                        getPendingIntent());

      waitForResult();

      ByteArrayOutputStream baos = new ByteArrayOutputStream();
      Util.copy(pointer.getInputStream(), baos);
      pointer.close();

      Log.w(TAG, baos.size() + "-byte response: " + Hex.dump(baos.toByteArray()));

      return (RetrieveConf) new PduParser(baos.toByteArray()).parse();
    } catch (IOException | TimeoutException e) {
      Log.w(TAG, e);
      throw new MmsException(e);
    } finally {
      endTransaction();
    }
  }
}