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.MmsConfig; 40 import com.android.mms.ui.MessagingPreferenceActivity; 41 import com.google.android.mms.ContentType; 42 import com.google.android.mms.MmsException; 43 import com.google.android.mms.pdu.DeliveryInd; 44 import com.google.android.mms.pdu.GenericPdu; 45 import com.google.android.mms.pdu.NotificationInd; 46 import com.google.android.mms.pdu.PduHeaders; 47 import com.google.android.mms.pdu.PduParser; 48 import com.google.android.mms.pdu.PduPersister; 49 import com.google.android.mms.pdu.ReadOrigInd; 50 51 /** 52 * Receives Intent.WAP_PUSH_RECEIVED_ACTION intents and starts the 53 * TransactionService by passing the push-data to it. 54 */ 55 public class PushReceiver extends BroadcastReceiver { 56 private static final String TAG = "PushReceiver"; 57 private static final boolean DEBUG = false; 58 private static final boolean LOCAL_LOGV = false; 59 60 private class ReceivePushTask extends AsyncTask<Intent,Void,Void> { 61 private Context mContext; 62 public ReceivePushTask(Context context) { 63 mContext = context; 64 } 65 66 @Override 67 protected Void doInBackground(Intent... intents) { 68 Intent intent = intents[0]; 69 70 // Get raw PDU push-data from the message and parse it 71 byte[] pushData = intent.getByteArrayExtra("data"); 72 PduParser parser = new PduParser(pushData); 73 GenericPdu pdu = parser.parse(); 74 75 if (null == pdu) { 76 Log.e(TAG, "Invalid PUSH data"); 77 return null; 78 } 79 80 PduPersister p = PduPersister.getPduPersister(mContext); 81 ContentResolver cr = mContext.getContentResolver(); 82 int type = pdu.getMessageType(); 83 long threadId = -1; 84 85 try { 86 switch (type) { 87 case MESSAGE_TYPE_DELIVERY_IND: 88 case MESSAGE_TYPE_READ_ORIG_IND: { 89 threadId = findThreadId(mContext, pdu, type); 90 if (threadId == -1) { 91 // The associated SendReq isn't found, therefore skip 92 // processing this PDU. 93 break; 94 } 95 96 Uri uri = p.persist(pdu, Inbox.CONTENT_URI, true, 97 MessagingPreferenceActivity.getIsGroupMmsEnabled(mContext), null); 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 // Save the pdu. If we can start downloading the real pdu immediately, 123 // don't allow persist() to create a thread for the notificationInd 124 // because it causes UI jank. 125 Uri uri = p.persist(pdu, Inbox.CONTENT_URI, 126 !NotificationTransaction.allowAutoDownload(), 127 MessagingPreferenceActivity.getIsGroupMmsEnabled(mContext), 128 null); 129 130 // Start service to finish the notification transaction. 131 Intent svc = new Intent(mContext, TransactionService.class); 132 svc.putExtra(TransactionBundle.URI, uri.toString()); 133 svc.putExtra(TransactionBundle.TRANSACTION_TYPE, 134 Transaction.NOTIFICATION_TRANSACTION); 135 mContext.startService(svc); 136 } else if (LOCAL_LOGV) { 137 Log.v(TAG, "Skip downloading duplicate message: " 138 + new String(nInd.getContentLocation())); 139 } 140 break; 141 } 142 default: 143 Log.e(TAG, "Received unrecognized PDU."); 144 } 145 } catch (MmsException e) { 146 Log.e(TAG, "Failed to save the data from PUSH: type=" + type, e); 147 } catch (RuntimeException e) { 148 Log.e(TAG, "Unexpected RuntimeException.", e); 149 } 150 151 if (LOCAL_LOGV) { 152 Log.v(TAG, "PUSH Intent processed."); 153 } 154 155 return null; 156 } 157 } 158 159 @Override 160 public void onReceive(Context context, Intent intent) { 161 if (intent.getAction().equals(WAP_PUSH_DELIVER_ACTION) 162 && ContentType.MMS_MESSAGE.equals(intent.getType())) { 163 if (LOCAL_LOGV) { 164 Log.v(TAG, "Received PUSH Intent: " + intent); 165 } 166 167 // Hold a wake lock for 5 seconds, enough to give any 168 // services we start time to take their own wake locks. 169 PowerManager pm = (PowerManager)context.getSystemService(Context.POWER_SERVICE); 170 PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, 171 "MMS PushReceiver"); 172 wl.acquire(5000); 173 new ReceivePushTask(context).execute(intent); 174 } 175 } 176 177 private static long findThreadId(Context context, GenericPdu pdu, int type) { 178 String messageId; 179 180 if (type == MESSAGE_TYPE_DELIVERY_IND) { 181 messageId = new String(((DeliveryInd) pdu).getMessageId()); 182 } else { 183 messageId = new String(((ReadOrigInd) pdu).getMessageId()); 184 } 185 186 StringBuilder sb = new StringBuilder('('); 187 sb.append(Mms.MESSAGE_ID); 188 sb.append('='); 189 sb.append(DatabaseUtils.sqlEscapeString(messageId)); 190 sb.append(" AND "); 191 sb.append(Mms.MESSAGE_TYPE); 192 sb.append('='); 193 sb.append(PduHeaders.MESSAGE_TYPE_SEND_REQ); 194 // TODO ContentResolver.query() appends closing ')' to the selection argument 195 // sb.append(')'); 196 197 Cursor cursor = SqliteWrapper.query(context, context.getContentResolver(), 198 Mms.CONTENT_URI, new String[] { Mms.THREAD_ID }, 199 sb.toString(), null, null); 200 if (cursor != null) { 201 try { 202 if ((cursor.getCount() == 1) && cursor.moveToFirst()) { 203 return cursor.getLong(0); 204 } 205 } finally { 206 cursor.close(); 207 } 208 } 209 210 return -1; 211 } 212 213 private static boolean isDuplicateNotification( 214 Context context, NotificationInd nInd) { 215 byte[] rawLocation = nInd.getContentLocation(); 216 if (rawLocation != null) { 217 String location = new String(rawLocation); 218 String selection = Mms.CONTENT_LOCATION + " = ?"; 219 String[] selectionArgs = new String[] { location }; 220 Cursor cursor = SqliteWrapper.query( 221 context, context.getContentResolver(), 222 Mms.CONTENT_URI, new String[] { Mms._ID }, 223 selection, selectionArgs, null); 224 if (cursor != null) { 225 try { 226 if (cursor.getCount() > 0) { 227 // We already received the same notification before. 228 return true; 229 } 230 } finally { 231 cursor.close(); 232 } 233 } 234 } 235 return false; 236 } 237 } 238
