1 /*
2  * Copyright (C) 2023 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.android.server.healthconnect.utils;
18 
19 import android.os.Environment;
20 
21 import java.io.File;
22 
23 /**
24  * Class to help with the filesystem related methods.
25  *
26  * @hide
27  */
28 public final class FilesUtil {
29     /**
30      * Get the health connect dir for the user to store sensitive data in a credential encrypted
31      * dir.
32      */
getDataSystemCeHCDirectoryForUser(int userId)33     public static File getDataSystemCeHCDirectoryForUser(int userId) {
34         // Duplicates the implementation of Environment#getDataSystemCeDirectory
35         // TODO(b/191059409): Unhide Environment#getDataSystemCeDirectory and switch to it.
36         File systemCeDir = new File(Environment.getDataDirectory(), "system_ce");
37         File systemCeUserDir = new File(systemCeDir, String.valueOf(userId));
38         return new File(systemCeUserDir, "healthconnect");
39     }
40 
41     /** Delete the dir recursively. */
deleteDir(File dir)42     public static void deleteDir(File dir) {
43         File[] files = dir.listFiles();
44         if (files != null) {
45             for (var file : files) {
46                 if (file.isDirectory()) {
47                     deleteDir(file);
48                 } else {
49                     file.delete();
50                 }
51             }
52         }
53         dir.delete();
54     }
55 
FilesUtil()56     private FilesUtil() {}
57 }
58