1 /*
2  * Copyright (C) 2024 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.permissioncontroller.pm.data.repository.v31
18 
19 import android.app.Application
20 import android.content.pm.PackageManager
21 import android.os.UserHandle
22 import android.util.Log
23 import com.android.permissioncontroller.permission.utils.Utils
24 import com.android.permissioncontroller.pm.data.model.v31.PackageInfoModel
25 import kotlin.concurrent.Volatile
26 import kotlinx.coroutines.CoroutineDispatcher
27 import kotlinx.coroutines.Dispatchers
28 import kotlinx.coroutines.withContext
29 
30 /**
31  * Repository to access package info data exposed by [PackageManager]. Domain and view layer
32  * shouldn't access [PackageManager] directly, instead they should use the repository.
33  */
34 interface PackageRepository {
getPackageInfonull35     suspend fun getPackageInfo(
36         packageName: String,
37         user: UserHandle,
38         flags: Int = PackageManager.GET_PERMISSIONS
39     ): PackageInfoModel?
40 
41     companion object {
42         @Volatile private var instance: PackageRepository? = null
43 
44         fun getInstance(app: Application): PackageRepository =
45             instance ?: synchronized(this) { PackageRepositoryImpl(app).also { instance = it } }
46     }
47 }
48 
49 class PackageRepositoryImpl(
50     private val app: Application,
51     private val dispatcher: CoroutineDispatcher = Dispatchers.Default,
52 ) : PackageRepository {
getPackageInfonull53     override suspend fun getPackageInfo(
54         packageName: String,
55         user: UserHandle,
56         flags: Int
57     ): PackageInfoModel? =
58         withContext(dispatcher) {
59             try {
60                 val packageInfo =
61                     Utils.getUserContext(app, user)
62                         .packageManager
63                         .getPackageInfo(packageName, PackageManager.GET_PERMISSIONS)
64                 PackageInfoModel(packageInfo)
65             } catch (e: PackageManager.NameNotFoundException) {
66                 Log.w(LOG_TAG, "package $packageName not found for user ${user.identifier}")
67                 null
68             }
69         }
70 
71     companion object {
72         private const val LOG_TAG = "PackageRepository"
73     }
74 }
75