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_DELIVER_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 import android.content.BroadcastReceiver; 25 import android.content.ContentResolver; 26 import android.content.ContentValues; 27 import android.content.Context; 28 import android.content.Intent; 29 import android.database.Cursor; 30 import android.database.DatabaseUtils; 31 import android.database.sqlite.SqliteWrapper; 32 import android.net.Uri; 33 import android.os.AsyncTask; 34 import android.os.PowerManager; 35 import android.provider.Telephony.Mms; 36 import android.provider.Telephony.Mms.Inbox; 37 import android.util.Log; 38 39 import com.android.mms.LogTag; 40 import com.android.mms.MmsConfig; 41 import com.android.mms.ui.MessagingPreferenceActivity; 42 import com.google.android.mms.ContentType; 43 import com.google.android.mms.MmsException; 44 import com.google.android.mms.pdu.DeliveryInd; 45 import com.google.android.mms.pdu.GenericPdu; 46 import com.google.android.mms.pdu.NotificationInd; 47 import com.google.android.mms.pdu.PduHeaders; 48 import com.google.android.mms.pdu.PduParser; 49 import com.google.android.mms.pdu.PduPersister; 50 import com.google.android.mms.pdu.ReadOrigInd; 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 = LogTag.TAG; 58 private static final boolean DEBUG = false; 59 private static final boolean LOCAL_LOGV = false; 60 61 private class ReceivePushTask extends AsyncTask<Intent,Void,Void> { 62 private Context mContext; 63 public ReceivePushTask(Context context) { 64 mContext = context; 65 } 66 67 @Override 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, true, 98 MessagingPreferenceActivity.getIsGroupMmsEnabled(mContext), null); 99 // Update thread ID for ReadOrigInd & DeliveryInd. 100 ContentValues values = new ContentValues(1); 101 values.put(Mms.THREAD_ID, threadId); 102 SqliteWrapper.update(mContext, cr, uri, values, null, null); 103 break; 104 } 105 case MESSAGE_TYPE_NOTIFICATION_IND: { 106 NotificationInd nInd = (NotificationInd) pdu; 107 108 if (MmsConfig.getTransIdEnabled()) { 109 byte [] contentLocation = nInd.getContentLocation(); 110 if ('=' == contentLocation[contentLocation.length - 1]) { 111 byte [] transactionId = nInd.getTransactionId(); 112 byte [] contentLocationWithId = new byte [contentLocation.length 113 + transactionId.length]; 114 System.arraycopy(contentLocation, 0, contentLocationWithId, 115 0, contentLocation.length); 116 System.arraycopy(transactionId, 0, contentLocationWithId, 117 contentLocation.length, transactionId.length); 118 nInd.setContentLocation(contentLocationWithId); 119 } 120 } 121 122 if (!isDuplicateNotification(mContext, nInd)) { 123 // Save the pdu. If we can start downloading the real pdu immediately, 124 // don't allow persist() to create a thread for the notificationInd 125 // because it causes UI jank. 126 Uri uri = p.persist(pdu, Inbox.CONTENT_URI, 127 !NotificationTransaction.allowAutoDownload(), 128 MessagingPreferenceActivity.getIsGroupMmsEnabled(mContext), 129 null); 130 131 // Start service to finish the notification transaction. 132 Intent svc = new Intent(mContext, TransactionService.class); 133 svc.putExtra(TransactionBundle.URI, uri.toString()); 134 svc.putExtra(TransactionBundle.TRANSACTION_TYPE, 135 Transaction.NOTIFICATION_TRANSACTION); 136 mContext.startService(svc); 137 } else if (LOCAL_LOGV) { 138 Log.v(TAG, "Skip downloading duplicate message: " 139 + new String(nInd.getContentLocation())); 140 } 141 break; 142 } 143 default: 144 Log.e(TAG, "Received unrecognized PDU."); 145 } 146 } catch (MmsException e) { 147 Log.e(TAG, "Failed to save the data from PUSH: type=" + type, e); 148 } catch (RuntimeException e) { 149 Log.e(TAG, "Unexpected RuntimeException.", e); 150 } 151 152 if (LOCAL_LOGV) { 153 Log.v(TAG, "PUSH Intent processed."); 154 } 155 156 return null; 157 } 158 } 159 160 @Override 161 public void onReceive(Context context, Intent intent) { 162 if (intent.getAction().equals(WAP_PUSH_DELIVER_ACTION) 163 && ContentType.MMS_MESSAGE.equals(intent.getType())) { 164 if (LOCAL_LOGV) { 165 Log.v(TAG, "Received PUSH Intent: " + intent); 166 } 167 168 // Hold a wake lock for 5 seconds, enough to give any 169 // services we start time to take their own wake locks. 170 PowerManager pm = (PowerManager)context.getSystemService(Context.POWER_SERVICE); 171 PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, 172 "MMS PushReceiver"); 173 wl.acquire(5000); 174 new ReceivePushTask(context).execute(intent); 175 } 176 } 177 178 private static long findThreadId(Context context, GenericPdu pdu, int type) { 179 String messageId; 180 181 if (type == MESSAGE_TYPE_DELIVERY_IND) { 182 messageId = new String(((DeliveryInd) pdu).getMessageId()); 183 } else { 184 messageId = new String(((ReadOrigInd) pdu).getMessageId()); 185 } 186 187 StringBuilder sb = new StringBuilder('('); 188 sb.append(Mms.MESSAGE_ID); 189 sb.append('='); 190 sb.append(DatabaseUtils.sqlEscapeString(messageId)); 191 sb.append(" AND "); 192 sb.append(Mms.MESSAGE_TYPE); 193 sb.append('='); 194 sb.append(PduHeaders.MESSAGE_TYPE_SEND_REQ); 195 // TODO ContentResolver.query() appends closing ')' to the selection argument 196 // sb.append(')'); 197 198 Cursor cursor = SqliteWrapper.query(context, context.getContentResolver(), 199 Mms.CONTENT_URI, new String[] { Mms.THREAD_ID }, 200 sb.toString(), null, null); 201 if (cursor != null) { 202 try { 203 if ((cursor.getCount() == 1) && cursor.moveToFirst()) { 204 return cursor.getLong(0); 205 } 206 } finally { 207 cursor.close(); 208 } 209 } 210 211 return -1; 212 } 213 214 private static boolean isDuplicateNotification( 215 Context context, NotificationInd nInd) { 216 byte[] rawLocation = nInd.getContentLocation(); 217 if (rawLocation != null) { 218 String location = new String(rawLocation); 219 String selection = Mms.CONTENT_LOCATION + " = ?"; 220 String[] selectionArgs = new String[] { location }; 221 Cursor cursor = SqliteWrapper.query( 222 context, context.getContentResolver(), 223 Mms.CONTENT_URI, new String[] { Mms._ID }, 224 selection, selectionArgs, null); 225 if (cursor != null) { 226 try { 227 if (cursor.getCount() > 0) { 228 // We already received the same notification before. 229 return true; 230 } 231 } finally { 232 cursor.close(); 233 } 234 } 235 } 236 return false; 237 } 238 } 239
