content: /*
   * Copyright 2014 Jacob Klinker
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.android.mms.transaction;
  
  import android.content.ContentUris;
  import android.content.ContentValues;
  import android.content.Context;
  import android.content.Intent;
  import android.database.sqlite.SqliteWrapper;
  import android.net.Uri;
  import android.provider.Telephony.Mms;
  import android.provider.Telephony.Mms.Sent;
  import android.text.TextUtils;
  
  import com.android.mms.logs.LogTag;
  import com.android.mms.util.RateController;
  import com.android.mms.util.SendingProgressTokenManager;
  import com.google.android.mms.pdu_alt.EncodedStringValue;
  import com.google.android.mms.pdu_alt.PduComposer;
  import com.google.android.mms.pdu_alt.PduHeaders;
  import com.google.android.mms.pdu_alt.PduParser;
  import com.google.android.mms.pdu_alt.PduPersister;
  import com.google.android.mms.pdu_alt.SendConf;
  import com.google.android.mms.pdu_alt.SendReq;
  import com.klinker.android.logger.Log;
  import com.klinker.android.send_message.BroadcastUtils;
  import com.klinker.android.send_message.Utils;
  
  import java.util.Arrays;
  
  /**
   * The SendTransaction is responsible for sending multimedia messages
   * (M-Send.req) to the MMSC server.  It:
   *
   * <ul>
   * <li>Loads the multimedia message from storage (Outbox).
   * <li>Packs M-Send.req and sends it.
   * <li>Retrieves confirmation data from the server  (M-Send.conf).
   * <li>Parses confirmation message and handles it.
   * <li>Moves sent multimedia message from Outbox to Sent.
   * <li>Notifies the TransactionService about successful completion.
   * </ul>
   */
  public class SendTransaction extends Transaction implements Runnable {
      private static final String TAG = LogTag.TAG;
  
      private Thread mThread;
      public final Uri mSendReqURI;
  
      public SendTransaction(Context context,
              int transId, TransactionSettings connectionSettings, String uri) {
          super(context, transId, connectionSettings);
          mSendReqURI = Uri.parse(uri);
          mId = uri;
  
          // Attach the transaction to the instance of RetryScheduler.
          attach(RetryScheduler.getInstance(context));
      }
  
      /*
       * (non-Javadoc)
       * @see com.android.mms.Transaction#process()
       */
      @Override
      public void process() {
          mThread = new Thread(this, "SendTransaction");
          mThread.start();
      }
  
      public void run() {
          StringBuilder builder = new StringBuilder();
          try {
              RateController.init(mContext);
              RateController rateCtlr = RateController.getInstance();
              if (rateCtlr.isLimitSurpassed() && !rateCtlr.isAllowedByUser()) {
                  Log.e(TAG, "Sending rate limit surpassed.");
                  return;
              }
  
              // Load M-Send.req from outbox
              PduPersister persister = PduPersister.getPduPersister(mContext);
              SendReq sendReq = (SendReq) persister.load(mSendReqURI);
  
              // Update the 'date' field of the PDU right before sending it.
              long date = System.currentTimeMillis() / 1000L;
              sendReq.setDate(date);
  
              // Persist the new date value into database.
              ContentValues values = new ContentValues(1);
              values.put(Mms.DATE, date);
              SqliteWrapper.update(mContext, mContext.getContentResolver(),
                                   mSendReqURI, values, null, null);
  
              // fix bug 2100169: insert the 'from' address per spec
              String lineNumber = Utils.getMyPhoneNumber(mContext);
              if (!TextUtils.isEmpty(lineNumber)) {
                  sendReq.setFrom(new EncodedStringValue(lineNumber));
              }
  
              // Pack M-Send.req, send it, retrieve confirmation data, and parse it
              long tokenKey = ContentUris.parseId(mSendReqURI);
              byte[] response = sendPdu(SendingProgressTokenManager.get(tokenKey),
                                        new PduComposer(mContext, sendReq).make());
              SendingProgressTokenManager.remove(tokenKey);
  
              if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {
                  String respStr = new String(response);
                  builder.append("[SendTransaction] run: send mms msg (" + mId + "), resp=" + respStr);
                  Log.d(TAG, "[SendTransaction] run: send mms msg (" + mId + "), resp=" + respStr);
              }
  
              SendConf conf = (SendConf) new PduParser(response).parse();
              if (conf == null) {
                  Log.e(TAG, "No M-Send.conf received.");
                  builder.append("No M-Send.conf received.\n");
              }
  
              // Check whether the responding Transaction-ID is consistent
              // with the sent one.
              byte[] reqId = sendReq.getTransactionId();
              byte[] confId = conf.getTransactionId();
              if (!Arrays.equals(reqId, confId)) {
                  Log.e(TAG, "Inconsistent Transaction-ID: req="
                          + new String(reqId) + ", conf=" + new String(confId));
                  builder.append("Inconsistent Transaction-ID: req="
                          + new String(reqId) + ", conf=" + new String(confId) + "\n");
                  return;
              }
  
              // From now on, we won't save the whole M-Send.conf into
              // our database. Instead, we just save some interesting fields
              // into the related M-Send.req.
              values = new ContentValues(2);
              int respStatus = conf.getResponseStatus();
              values.put(Mms.RESPONSE_STATUS, respStatus);
  
              if (respStatus != PduHeaders.RESPONSE_STATUS_OK) {
                  SqliteWrapper.update(mContext, mContext.getContentResolver(),
                                       mSendReqURI, values, null, null);
                  Log.e(TAG, "Server returned an error code: " + respStatus);
                  builder.append("Server returned an error code: " + respStatus + "\n");
                  return;
              }
  
              String messageId = PduPersister.toIsoString(conf.getMessageId());
              values.put(Mms.MESSAGE_ID, messageId);
              SqliteWrapper.update(mContext, mContext.getContentResolver(),
                                   mSendReqURI, values, null, null);
  
              // Move M-Send.req from Outbox into Sent.
              Uri uri = persister.move(mSendReqURI, Sent.CONTENT_URI);
  
              mTransactionState.setState(TransactionState.SUCCESS);
              mTransactionState.setContentUri(uri);
          } catch (Throwable t) {
              Log.e(TAG, "error", t);
          } finally {
              if (mTransactionState.getState() != TransactionState.SUCCESS) {
                  mTransactionState.setState(TransactionState.FAILED);
                  mTransactionState.setContentUri(mSendReqURI);
                  Log.e(TAG, "Delivery failed.");
                  builder.append("Delivery failed\n");
  
                  Intent intent = new Intent(com.klinker.android.send_message.Transaction.MMS_ERROR);
                  intent.putExtra("stack", builder.toString());
                  BroadcastUtils.sendExplicitBroadcast(
                          mContext, intent, com.klinker.android.send_message.Transaction.MMS_ERROR);
              }
              notifyObservers();
          }
      }
  
      @Override
      public int getType() {
          return SEND_TRANSACTION;
      }
  }
  