1 /* 2 * Copyright (C) 2007-2008 Esmertec AG. 3 * Copyright (C) 2007-2008 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package com.android.mms.transaction; 19 20 import static android.provider.Telephony.Sms.Intents.WAP_PUSH_RECEIVED_ACTION; 21 import static com.google.android.mms.pdu.PduHeaders.MESSAGE_TYPE_DELIVERY_IND; 22 import static com.google.android.mms.pdu.PduHeaders.MESSAGE_TYPE_NOTIFICATION_IND; 23 import static com.google.android.mms.pdu.PduHeaders.MESSAGE_TYPE_READ_ORIG_IND; 24 25 import com.android.mms.MmsConfig; 26 import com.google.android.mms.ContentType; 27 import com.google.android.mms.MmsException; 28 import com.google.android.mms.pdu.DeliveryInd; 29 import com.google.android.mms.pdu.GenericPdu; 30 import com.google.android.mms.pdu.NotificationInd; 31 import com.google.android.mms.pdu.PduHeaders; 32 import com.google.android.mms.pdu.PduParser; 33 import com.google.android.mms.pdu.PduPersister; 34 import com.google.android.mms.pdu.ReadOrigInd; 35 import android.database.sqlite.SqliteWrapper; 36 37 import android.content.BroadcastReceiver; 38 import android.content.ContentResolver; 39 import android.content.ContentValues; 40 import android.content.Context; 41 import android.content.Intent; 42 import android.database.Cursor; 43 import android.database.DatabaseUtils; 44 import android.net.Uri; 45 import android.os.AsyncTask; 46 import android.os.PowerManager; 47 import android.provider.Telephony.Mms; 48 import android.provider.Telephony.Mms.Inbox; 49 import android.util.Config; 50 import android.util.Log; 51 52 /** 53 * Receives Intent.WAP_PUSH_RECEIVED_ACTION intents and starts the 54 * TransactionService by passing the push-data to it. 55 */ 56 public class PushReceiver extends BroadcastReceiver { 57 private static final String TAG = "PushReceiver"; 58 private static final boolean DEBUG = false; 59 private static final boolean LOCAL_LOGV = DEBUG ? Config.LOGD : Config.LOGV; 60 61 private class ReceivePushTask extends AsyncTask<Intent,Void,Void> { 62 private Context mContext; ReceivePushTask(Context context)63 public ReceivePushTask(Context context) { 64 mContext = context; 65 } 66 67 @Override doInBackground(Intent... intents)68 protected Void doInBackground(Intent... intents) { 69 Intent intent = intents[0]; 70 71 // Get raw PDU push-data from the message and parse it 72 byte[] pushData = intent.getByteArrayExtra("data"); 73 PduParser parser = new PduParser(pushData); 74 GenericPdu pdu = parser.parse(); 75 76 if (null == pdu) { 77 Log.e(TAG, "Invalid PUSH data"); 78 return null; 79 } 80 81 PduPersister p = PduPersister.getPduPersister(mContext); 82 ContentResolver cr = mContext.getContentResolver(); 83 int type = pdu.getMessageType(); 84 long threadId = -1; 85 86 try { 87 switch (type) { 88 case MESSAGE_TYPE_DELIVERY_IND: 89 case MESSAGE_TYPE_READ_ORIG_IND: { 90 threadId = findThreadId(mContext, pdu, type); 91 if (threadId == -1) { 92 // The associated SendReq isn't found, therefore skip 93 // processing this PDU. 94 break; 95 } 96 97 Uri uri = p.persist(pdu, Inbox.CONTENT_URI); 98 // Update thread ID for ReadOrigInd & DeliveryInd. 99 ContentValues values = new ContentValues(1); 100 values.put(Mms.THREAD_ID, threadId); 101 SqliteWrapper.update(mContext, cr, uri, values, null, null); 102 break; 103 } 104 case MESSAGE_TYPE_NOTIFICATION_IND: { 105 NotificationInd nInd = (NotificationInd) pdu; 106 107 if (MmsConfig.getTransIdEnabled()) { 108 byte [] contentLocation = nInd.getContentLocation(); 109 if ('=' == contentLocation[contentLocation.length - 1]) { 110 byte [] transactionId = nInd.getTransactionId(); 111 byte [] contentLocationWithId = new byte [contentLocation.length 112 + transactionId.length]; 113 System.arraycopy(contentLocation, 0, contentLocationWithId, 114 0, contentLocation.length); 115 System.arraycopy(transactionId, 0, contentLocationWithId, 116 contentLocation.length, transactionId.length); 117 nInd.setContentLocation(contentLocationWithId); 118 } 119 } 120 121 if (!isDuplicateNotification(mContext, nInd)) { 122 Uri uri = p.persist(pdu, Inbox.CONTENT_URI); 123 // Start service to finish the notification transaction. 124 Intent svc = new Intent(mContext, TransactionService.class); 125 svc.putExtra(TransactionBundle.URI, uri.toString()); 126 svc.putExtra(TransactionBundle.TRANSACTION_TYPE, 127 Transaction.NOTIFICATION_TRANSACTION); 128 mContext.startService(svc); 129 } else if (LOCAL_LOGV) { 130 Log.v(TAG, "Skip downloading duplicate message: " 131 + new String(nInd.getContentLocation())); 132 } 133 break; 134 } 135 default: 136 Log.e(TAG, "Received unrecognized PDU."); 137 } 138 } catch (MmsException e) { 139 Log.e(TAG, "Failed to save the data from PUSH: type=" + type, e); 140 } catch (RuntimeException e) { 141 Log.e(TAG, "Unexpected RuntimeException.", e); 142 } 143 144 if (LOCAL_LOGV) { 145 Log.v(TAG, "PUSH Intent processed."); 146 } 147 148 return null; 149 } 150 } 151 152 @Override onReceive(Context context, Intent intent)153 public void onReceive(Context context, Intent intent) { 154 if (intent.getAction().equals(WAP_PUSH_RECEIVED_ACTION) 155 && ContentType.MMS_MESSAGE.equals(intent.getType())) { 156 if (LOCAL_LOGV) { 157 Log.v(TAG, "Received PUSH Intent: " + intent); 158 } 159 160 // Hold a wake lock for 5 seconds, enough to give any 161 // services we start time to take their own wake locks. 162 PowerManager pm = (PowerManager)context.getSystemService(Context.POWER_SERVICE); 163 PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, 164 "MMS PushReceiver"); 165 wl.acquire(5000); 166 new ReceivePushTask(context).execute(intent); 167 } 168 } 169 findThreadId(Context context, GenericPdu pdu, int type)170 private static long findThreadId(Context context, GenericPdu pdu, int type) { 171 String messageId; 172 173 if (type == MESSAGE_TYPE_DELIVERY_IND) { 174 messageId = new String(((DeliveryInd) pdu).getMessageId()); 175 } else { 176 messageId = new String(((ReadOrigInd) pdu).getMessageId()); 177 } 178 179 StringBuilder sb = new StringBuilder('('); 180 sb.append(Mms.MESSAGE_ID); 181 sb.append('='); 182 sb.append(DatabaseUtils.sqlEscapeString(messageId)); 183 sb.append(" AND "); 184 sb.append(Mms.MESSAGE_TYPE); 185 sb.append('='); 186 sb.append(PduHeaders.MESSAGE_TYPE_SEND_REQ); 187 // TODO ContentResolver.query() appends closing ')' to the selection argument 188 // sb.append(')'); 189 190 Cursor cursor = SqliteWrapper.query(context, context.getContentResolver(), 191 Mms.CONTENT_URI, new String[] { Mms.THREAD_ID }, 192 sb.toString(), null, null); 193 if (cursor != null) { 194 try { 195 if ((cursor.getCount() == 1) && cursor.moveToFirst()) { 196 return cursor.getLong(0); 197 } 198 } finally { 199 cursor.close(); 200 } 201 } 202 203 return -1; 204 } 205 isDuplicateNotification( Context context, NotificationInd nInd)206 private static boolean isDuplicateNotification( 207 Context context, NotificationInd nInd) { 208 byte[] rawLocation = nInd.getContentLocation(); 209 if (rawLocation != null) { 210 String location = new String(rawLocation); 211 String selection = Mms.CONTENT_LOCATION + " = ?"; 212 String[] selectionArgs = new String[] { location }; 213 Cursor cursor = SqliteWrapper.query( 214 context, context.getContentResolver(), 215 Mms.CONTENT_URI, new String[] { Mms._ID }, 216 selection, selectionArgs, null); 217 if (cursor != null) { 218 try { 219 if (cursor.getCount() > 0) { 220 // We already received the same notification before. 221 return true; 222 } 223 } finally { 224 cursor.close(); 225 } 226 } 227 } 228 return false; 229 } 230 } 231