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/*
* Copyright (C) 2011 The Android Open Source Project
*
* 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.cellbroadcastreceiver;
import android.app.IntentService;
import android.content.ContentValues;
import android.content.Intent;
import android.database.sqlite.SQLiteDatabase;
import android.util.Log;
/**
* Service to update the SQLite database to add a new broadcast message,
* or to delete one or all previously received broadcasts.
*/
public class CellBroadcastDatabaseService extends IntentService {
private static final String TAG = "CellBroadcastDatabaseService";
/** Action to insert a new message (passed as CellBroadcastMessage extra). */
static final String ACTION_INSERT_NEW_BROADCAST = "ACTION_INSERT_NEW_BROADCAST";
/** Action to delete a single broadcast (row ID passed as extra). */
static final String ACTION_DELETE_BROADCAST = "ACTION_DELETE_BROADCAST";
/** Action to mark a broadcast as read by the user (by row ID or delivery time extra). */
static final String ACTION_MARK_BROADCAST_READ = "ACTION_MARK_BROADCAST_READ";
/** Action to delete all broadcasts from database (no extras). */
static final String ACTION_DELETE_ALL_BROADCASTS = "ACTION_DELETE_ALL_BROADCASTS";
/** Identifier for getExtra() for row ID to delete or mark read. */
public static final String DATABASE_ROW_ID_EXTRA =
"com.android.cellbroadcastreceiver.DATABASE_ROW_ID";
/** Identifier for getExtra() for delivery time of broadcast to mark read. */
public static final String DATABASE_DELIVERY_TIME_EXTRA =
"com.android.cellbroadcastreceiver.DATABASE_DELIVERY_TIME";
private SQLiteDatabase mBroadcastDb;
/** Callback for the active list activity when the contents change. */
private static CellBroadcastListActivity sActiveListActivity;
public CellBroadcastDatabaseService() {
super(TAG); // use class name for worker thread name
}
@Override
public void onCreate() {
super.onCreate();
if (mBroadcastDb == null) {
CellBroadcastDatabase.DatabaseHelper helper =
new CellBroadcastDatabase.DatabaseHelper(this);
mBroadcastDb = helper.getWritableDatabase();
}
}
@Override
public void onDestroy() {
super.onDestroy();
if (mBroadcastDb != null) {
mBroadcastDb.close();
mBroadcastDb = null;
}
}
static void setActiveListActivity(CellBroadcastListActivity activity) {
sActiveListActivity = activity;
}
@Override
public void onHandleIntent(Intent intent) {
// TODO: security check to detect malicious broadcast injections
String action = intent.getAction();
boolean notifyActiveListActivity = false;
if (ACTION_INSERT_NEW_BROADCAST.equals(action)) {
CellBroadcastMessage cbm = intent.getParcelableExtra(
CellBroadcastMessage.SMS_CB_MESSAGE_EXTRA);
if (cbm == null) {
Log.e(TAG, "ACTION_INSERT_NEW_BROADCAST with no CB message extra");
return;
}
ContentValues cv = cbm.getContentValues();
long rowId = mBroadcastDb.insert(CellBroadcastDatabase.TABLE_NAME, null, cv);
if (rowId == -1) {
Log.e(TAG, "failed to insert new broadcast into database!");
} else {
notifyActiveListActivity = true;
}
} else if (ACTION_DELETE_BROADCAST.equals(action)) {
long rowId = intent.getLongExtra(DATABASE_ROW_ID_EXTRA, -1);
if (rowId == -1) {
Log.e(TAG, "ACTION_DELETE_BROADCAST missing row ID to delete");
return;
}
int rowCount = mBroadcastDb.delete(CellBroadcastDatabase.TABLE_NAME,
CellBroadcastDatabase.Columns._ID + "=?",
new String[]{Long.toString(rowId)});
if (rowCount != 0) {
notifyActiveListActivity = true;
}
} else if (ACTION_DELETE_ALL_BROADCASTS.equals(action)) {
mBroadcastDb.delete(CellBroadcastDatabase.TABLE_NAME, null, null);
notifyActiveListActivity = true;
} else if (ACTION_MARK_BROADCAST_READ.equals(action)) {
long rowId = intent.getLongExtra(DATABASE_ROW_ID_EXTRA, -1);
long deliveryTime = intent.getLongExtra(DATABASE_DELIVERY_TIME_EXTRA, -1);
if (rowId == -1 && deliveryTime == -1) {
Log.e(TAG, "ACTION_MARK_BROADCAST_READ missing row ID or delivery time");
return;
}
ContentValues cv = new ContentValues(1);
cv.put(CellBroadcastDatabase.Columns.MESSAGE_READ, 1);
int rowCount;
if (rowId != -1) {
rowCount = mBroadcastDb.update(CellBroadcastDatabase.TABLE_NAME, cv,
CellBroadcastDatabase.Columns._ID + "=?",
new String[]{Long.toString(rowId)});
} else {
rowCount = mBroadcastDb.update(CellBroadcastDatabase.TABLE_NAME, cv,
CellBroadcastDatabase.Columns.DELIVERY_TIME + "=?",
new String[]{Long.toString(deliveryTime)});
}
if (rowCount != 0) {
notifyActiveListActivity = true;
}
} else {
Log.e(TAG, "ignoring unexpected Intent with action " + action);
}
if (notifyActiveListActivity && sActiveListActivity != null) {
sActiveListActivity.databaseContentChanged();
}
}
}
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