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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.googlecode.android_scripting.facade.telephony;
     18 
     19 import android.content.ContentProvider;
     20 import android.content.ContentValues;
     21 import android.database.Cursor;
     22 import android.net.Uri;
     23 import android.os.ParcelFileDescriptor;
     24 import android.text.TextUtils;
     25 
     26 import java.io.File;
     27 import java.io.FileNotFoundException;
     28 
     29 /**
     30  * A very simple content provider that can serve mms files from our cache directory so that
     31  * SmsManager#sendMultimdeiaMessage and SmsManager#downloadMultimediaMessage can read/write
     32  * the content of the MMS messages to send/download.
     33  */
     34 public class MmsFileProvider extends ContentProvider {
     35     @Override
     36     public boolean onCreate() {
     37         return true;
     38     }
     39 
     40     @Override
     41     public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
     42             String sortOrder) {
     43         // Don't support queries.
     44         return null;
     45     }
     46 
     47     @Override
     48     public Uri insert(Uri uri, ContentValues values) {
     49         // Don't support inserts.
     50         return null;
     51     }
     52 
     53     @Override
     54     public int delete(Uri uri, String selection, String[] selectionArgs) {
     55         // Don't support deletes.
     56         return 0;
     57     }
     58 
     59     @Override
     60     public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
     61         // Don't support updates.
     62         return 0;
     63     }
     64 
     65     @Override
     66     public String getType(Uri uri) {
     67         // For this sample, assume all files have no type.
     68         return null;
     69     }
     70 
     71     @Override
     72     public ParcelFileDescriptor openFile(Uri uri, String fileMode) throws FileNotFoundException {
     73         File file = new File(getContext().getCacheDir(), uri.getPath());
     74         int mode = (TextUtils.equals(fileMode, "r") ? ParcelFileDescriptor.MODE_READ_ONLY :
     75                 ParcelFileDescriptor.MODE_WRITE_ONLY
     76                    | ParcelFileDescriptor.MODE_TRUNCATE
     77                    | ParcelFileDescriptor.MODE_CREATE);
     78         return ParcelFileDescriptor.open(file, mode);
     79     }
     80 }
     81