1 /*
2  * Copyright (C) 2022 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.settingslib.spaprivileged.model.app
18 
19 import android.app.AppOpsManager;
20 import android.app.AppOpsManager.MODE_ALLOWED
21 import android.app.AppOpsManager.MODE_ERRORED
22 import android.app.AppOpsManager.Mode
23 import android.content.Context
24 import android.content.pm.ApplicationInfo
25 import android.content.pm.PackageManager
26 import android.os.UserHandle
27 import androidx.lifecycle.LiveData
28 import androidx.lifecycle.MutableLiveData
29 import androidx.lifecycle.map
30 import com.android.settingslib.spaprivileged.framework.common.appOpsManager
31 
32 interface IAppOpsController {
33     val mode: LiveData<Int>
34     val isAllowed: LiveData<Boolean>
35         get() = mode.map { it == MODE_ALLOWED }
36 
37     fun setAllowed(allowed: Boolean)
38 
39     @Mode fun getMode(): Int
40 }
41 
42 class AppOpsController(
43     context: Context,
44     private val app: ApplicationInfo,
45     private val op: Int,
46     private val modeForNotAllowed: Int = MODE_ERRORED,
47     private val setModeByUid: Boolean = false,
48 ) : IAppOpsController {
49     private val appOpsManager = context.appOpsManager
50     private val packageManager = context.packageManager
51 
52     override val mode: LiveData<Int>
53         get() = _mode
54 
55     override fun setAllowed(allowed: Boolean) {
56         val mode = if (allowed) MODE_ALLOWED else modeForNotAllowed
57 
58         if (setModeByUid) {
59             appOpsManager.setUidMode(op, app.uid, mode)
60         } else {
61             appOpsManager.setMode(op, app.uid, app.packageName, mode)
62         }
63 
64         val permission = AppOpsManager.opToPermission(op)
65         if (permission != null) {
66             packageManager.updatePermissionFlags(permission, app.packageName,
67                     PackageManager.FLAG_PERMISSION_USER_SET,
68                     PackageManager.FLAG_PERMISSION_USER_SET,
69                     UserHandle.getUserHandleForUid(app.uid))
70         }
71         _mode.postValue(mode)
72     }
73 
74     @Mode override fun getMode(): Int = appOpsManager.checkOpNoThrow(op, app.uid, app.packageName)
75 
76     private val _mode =
77         object : MutableLiveData<Int>() {
78             override fun onActive() {
79                 postValue(getMode())
80             }
81         }
82 }
83