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.settings.notification.app 18 19 import android.Manifest.permission.USE_FULL_SCREEN_INTENT 20 import android.app.AppOpsManager 21 import android.app.AppOpsManager.OP_USE_FULL_SCREEN_INTENT 22 import android.content.AttributionSource 23 import android.content.Context 24 import android.content.pm.PackageManager.FLAG_PERMISSION_USER_SET 25 import android.content.pm.PackageManager.GET_PERMISSIONS 26 import android.content.pm.PackageManager.NameNotFoundException 27 import android.os.UserHandle 28 import android.permission.PermissionManager 29 import android.util.Log 30 import androidx.preference.Preference 31 import androidx.preference.Preference.OnPreferenceChangeListener 32 import com.android.settings.notification.NotificationBackend 33 import com.android.settingslib.RestrictedSwitchPreference 34 35 class FullScreenIntentPermissionPreferenceController( 36 context: Context, 37 backend: NotificationBackend 38 ) : NotificationPreferenceController(context, backend), OnPreferenceChangeListener { 39 private val packageManager = mPm!! 40 private val permissionManager = context.getSystemService(PermissionManager::class.java)!! 41 private val appOpsManager = context.getSystemService(AppOpsManager::class.java)!! 42 43 private val packageName get() = mAppRow.pkg 44 private val uid get() = mAppRow.uid 45 private val userHandle get() = UserHandle.getUserHandleForUid(uid) 46 getPreferenceKeynull47 override fun getPreferenceKey() = KEY_FSI_PERMISSION 48 49 override fun isAvailable(): Boolean { 50 val inAppWidePreferences = mChannelGroup == null && mChannel == null 51 52 if (!inAppWidePreferences) { 53 Log.wtf(TAG, "Belongs only in app-wide notification preferences!") 54 } 55 56 return super.isAvailable() && inAppWidePreferences && isPermissionRequested() 57 } 58 isIncludedInFilternull59 override fun isIncludedInFilter() = false 60 61 override fun updateState(preference: Preference) { 62 check(KEY_FSI_PERMISSION.equals(preference.key)) 63 check(preference is RestrictedSwitchPreference) 64 65 preference.setDisabledByAdmin(mAdmin) 66 preference.isEnabled = !preference.isDisabledByAdmin 67 preference.isChecked = isPermissionGranted() 68 preference.parent?.isVisible = true 69 } 70 onPreferenceChangenull71 override fun onPreferenceChange(preference: Preference, value: Any): Boolean { 72 check(KEY_FSI_PERMISSION.equals(preference.key)) 73 check(preference is RestrictedSwitchPreference) 74 check(value is Boolean) 75 76 if (isPermissionGranted() != value) { 77 setPermissionGranted(value) 78 } 79 80 return true 81 } 82 isPermissionRequestednull83 private fun isPermissionRequested(): Boolean { 84 try { 85 val packageInfo = packageManager.getPackageInfo(packageName, GET_PERMISSIONS) 86 87 for (requestedPermission in packageInfo.requestedPermissions.orEmpty()) { 88 if (USE_FULL_SCREEN_INTENT.equals(requestedPermission)) { 89 return true 90 } 91 } 92 } catch (exception: NameNotFoundException) { 93 Log.e(TAG, "isPermissionRequested failed: $exception") 94 } 95 96 return false 97 } 98 isPermissionGrantednull99 private fun isPermissionGranted(): Boolean { 100 val attributionSource = AttributionSource.Builder(uid).setPackageName(packageName).build() 101 102 val permissionResult = 103 permissionManager.checkPermissionForPreflight(USE_FULL_SCREEN_INTENT, attributionSource) 104 105 return (permissionResult == PermissionManager.PERMISSION_GRANTED) 106 } 107 setPermissionGrantednull108 private fun setPermissionGranted(allowed: Boolean) { 109 val mode = if (allowed) AppOpsManager.MODE_ALLOWED else AppOpsManager.MODE_ERRORED 110 appOpsManager.setUidMode(OP_USE_FULL_SCREEN_INTENT, uid, mode) 111 packageManager.updatePermissionFlags( 112 USE_FULL_SCREEN_INTENT, 113 packageName, 114 FLAG_PERMISSION_USER_SET, 115 FLAG_PERMISSION_USER_SET, 116 userHandle 117 ) 118 } 119 120 companion object { 121 const val KEY_FSI_PERMISSION = "fsi_permission" 122 const val TAG = "FsiPermPrefController" 123 } 124 } 125