| /* |
| * Copyright (C) 2018 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.providers.telephony; |
| |
| import android.app.AppOpsManager; |
| import android.content.ContentProvider; |
| import android.content.ContentValues; |
| import android.content.UriMatcher; |
| import android.content.pm.PackageManager; |
| import android.database.Cursor; |
| import android.database.sqlite.SQLiteDatabase; |
| import android.database.sqlite.SQLiteOpenHelper; |
| import android.database.sqlite.SQLiteQueryBuilder; |
| import android.net.Uri; |
| import android.util.Log; |
| |
| /** |
| * This is the ContentProvider for the table sms_changes. |
| * This provider is applicable only for Android Auto builds as |
| * this table exists only in Android Auto environment. |
| * |
| * This provider does not notify of changes. |
| * Interested observers should instead listen to notification on sms table, instead. |
| */ |
| public class SmsChangesProvider extends ContentProvider { |
| private final static String TAG = "SmsChangesProvider"; |
| |
| private static final String TABLE_SMS_CHANGES = "sms_changes"; |
| |
| // Db open helper for tables stored in CE(Credential Encrypted) storage. |
| private SQLiteOpenHelper mCeOpenHelper; |
| |
| @Override |
| public String getType(Uri url) { |
| return null; |
| } |
| |
| @Override |
| public boolean onCreate() { |
| setAppOps(AppOpsManager.OP_READ_SMS, AppOpsManager.OP_WRITE_SMS); |
| mCeOpenHelper = MmsSmsDatabaseHelper.getInstanceForCe(getContext()); |
| return true; |
| } |
| |
| |
| @Override |
| public Cursor query(Uri url, String[] projectionIn, String selection, |
| String[] selectionArgs, String sort) { |
| // return if FEATURE_AUTOMOTIVE is not set |
| if (!isAutoFeatureSet()) { |
| return null; |
| } |
| |
| // Only support one type of query |
| // Caller sends content://mms-sms and other params |
| if (!isUrlSupported(url)) { |
| return null; |
| } |
| |
| SQLiteQueryBuilder qb = new SQLiteQueryBuilder(); |
| qb.setTables(TABLE_SMS_CHANGES); |
| SQLiteDatabase db = mCeOpenHelper.getReadableDatabase(); |
| return qb.query(db, projectionIn, selection, selectionArgs, |
| null /* groupBy */, null /* having */, |
| null /* sortOrder */); |
| } |
| |
| @Override |
| public Uri insert(Uri url, ContentValues initialValues) { |
| return null; |
| } |
| |
| @Override |
| public int delete(Uri url, String where, String[] whereArgs) { |
| // return if FEATURE_AUTOMOTIVE is not set |
| if (!isAutoFeatureSet()) { |
| return 0; |
| } |
| |
| // only support deletion of all data from the table |
| if (!isUrlSupported(url)) return 0; |
| |
| return mCeOpenHelper.getWritableDatabase().delete(TABLE_SMS_CHANGES, |
| null /* whereClause */, null /* whereArgs */); |
| } |
| |
| private boolean isUrlSupported(Uri url) { |
| if (sURLMatcher.match(url) != SMSCHANGES_URL) { |
| Log.e(TAG, "Invalid or Unsupported request: " + url); |
| return false; |
| } |
| return true; |
| } |
| |
| @Override |
| public int update(Uri url, ContentValues values, String where, String[] whereArgs) { |
| return 0; |
| } |
| |
| private boolean isAutoFeatureSet() { |
| return getContext().getPackageManager().hasSystemFeature(PackageManager.FEATURE_AUTOMOTIVE); |
| } |
| |
| private static final int SMSCHANGES_URL = 0; |
| |
| private static final UriMatcher sURLMatcher = |
| new UriMatcher(UriMatcher.NO_MATCH); |
| |
| static { |
| sURLMatcher.addURI("sms-changes", null, SMSCHANGES_URL); |
| } |
| } |