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.content.ContentProvider;
20 import android.content.ContentValues;
21 import android.content.Intent;
22 import android.database.Cursor;
23 import android.net.Uri;
24 import android.os.Bundle;
25 import android.os.ParcelFileDescriptor;
26 
27 import androidx.annotation.NonNull;
28 import androidx.annotation.Nullable;
29 
30 import java.io.File;
31 import java.io.FileNotFoundException;
32 
33 /**
34  * Empty content provider, all permissions are enforced in manifest
35  */
36 public class JobPermProvider extends ContentProvider {
37     @Override
call(@onNull String method, @Nullable String arg, @Nullable Bundle extras)38     public Bundle call(@NonNull String method, @Nullable String arg, @Nullable Bundle extras) {
39         if (method == null) {
40             return null;
41         }
42         switch (method) {
43             case "grant": {
44                 Uri uri = extras.getParcelable("uri");
45                 getContext().grantUriPermission(arg, uri,
46                         Intent.FLAG_GRANT_READ_URI_PERMISSION |
47                                 Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
48                 return null;
49             }
50             case "revoke": {
51                 Uri uri = extras.getParcelable("uri");
52                 getContext().revokeUriPermission(arg, uri,
53                         Intent.FLAG_GRANT_READ_URI_PERMISSION |
54                                 Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
55                 return null;
56 
57             }
58         }
59         return super.call(method, arg, extras);
60     }
61 
62     @Override
delete(Uri uri, String selection, String[] selectionArgs)63     public int delete(Uri uri, String selection, String[] selectionArgs) {
64         // do nothing
65         return 0;
66     }
67 
68     @Override
getType(Uri uri)69     public String getType(Uri uri) {
70         return "got/theMIME";
71     }
72 
73     @Override
insert(Uri uri, ContentValues values)74     public Uri insert(Uri uri, ContentValues values) {
75         return null;
76     }
77 
78     @Override
onCreate()79     public boolean onCreate() {
80         return false;
81     }
82 
83     @Override
query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder)84     public Cursor query(Uri uri, String[] projection, String selection,
85             String[] selectionArgs, String sortOrder) {
86         return null;
87     }
88 
89     @Override
update(Uri uri, ContentValues values, String selection, String[] selectionArgs)90     public int update(Uri uri, ContentValues values, String selection,
91             String[] selectionArgs) {
92         return 0;
93     }
94 
95     @Override
openFile(Uri uri, String mode)96     public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException {
97         return ParcelFileDescriptor.open(
98                 new File("/dev/null"), ParcelFileDescriptor.MODE_READ_ONLY);
99     }
100 }
101