1 /*
2  * Copyright (C) 2018 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 android.jobscheduler.cts.shareduid.jobperm;
18 
19 import android.annotation.NonNull;
20 import android.annotation.Nullable;
21 import android.content.ContentProvider;
22 import android.content.ContentValues;
23 import android.content.Intent;
24 import android.database.Cursor;
25 import android.net.Uri;
26 import android.os.Bundle;
27 import android.os.ParcelFileDescriptor;
28 
29 import java.io.File;
30 import java.io.FileNotFoundException;
31 
32 /**
33  * Empty content provider, all permissions are enforced in manifest
34  */
35 public class JobPermProvider extends ContentProvider {
36     @Override
call(@onNull String method, @Nullable String arg, @Nullable Bundle extras)37     public Bundle call(@NonNull String method, @Nullable String arg, @Nullable Bundle extras) {
38         if (method == null) {
39             return null;
40         }
41         switch (method) {
42             case "grant": {
43                 Uri uri = extras.getParcelable("uri");
44                 getContext().grantUriPermission(arg, uri,
45                         Intent.FLAG_GRANT_READ_URI_PERMISSION |
46                                 Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
47                 return null;
48             }
49             case "revoke": {
50                 Uri uri = extras.getParcelable("uri");
51                 getContext().revokeUriPermission(arg, uri,
52                         Intent.FLAG_GRANT_READ_URI_PERMISSION |
53                                 Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
54                 return null;
55 
56             }
57         }
58         return super.call(method, arg, extras);
59     }
60 
61     @Override
delete(Uri uri, String selection, String[] selectionArgs)62     public int delete(Uri uri, String selection, String[] selectionArgs) {
63         // do nothing
64         return 0;
65     }
66 
67     @Override
getType(Uri uri)68     public String getType(Uri uri) {
69         return "got/theMIME";
70     }
71 
72     @Override
insert(Uri uri, ContentValues values)73     public Uri insert(Uri uri, ContentValues values) {
74         return null;
75     }
76 
77     @Override
onCreate()78     public boolean onCreate() {
79         return false;
80     }
81 
82     @Override
query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder)83     public Cursor query(Uri uri, String[] projection, String selection,
84             String[] selectionArgs, String sortOrder) {
85         return null;
86     }
87 
88     @Override
update(Uri uri, ContentValues values, String selection, String[] selectionArgs)89     public int update(Uri uri, ContentValues values, String selection,
90             String[] selectionArgs) {
91         return 0;
92     }
93 
94     @Override
openFile(Uri uri, String mode)95     public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException {
96         return ParcelFileDescriptor.open(
97                 new File("/dev/null"), ParcelFileDescriptor.MODE_READ_ONLY);
98     }
99 }
100