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/*
* Copyright (C) 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.permissioncontroller.permission.data.v31
import android.app.AppOpsManager
import android.app.AppOpsManager.OPSTR_PHONE_CALL_CAMERA
import android.app.AppOpsManager.OPSTR_PHONE_CALL_MICROPHONE
import android.app.AppOpsManager.OPSTR_RECEIVE_AMBIENT_TRIGGER_AUDIO
import android.app.Application
import android.os.UserHandle
import android.os.UserManager
import com.android.modules.utils.build.SdkLevel
import com.android.permissioncontroller.permission.data.SmartAsyncMediatorLiveData
import com.android.permissioncontroller.permission.data.StandardPermGroupNamesLiveData
import com.android.permissioncontroller.permission.model.livedatatypes.v31.LightPackageOps
import com.android.permissioncontroller.permission.utils.PermissionMapping
import kotlinx.coroutines.Job
/**
* LiveData class tracking [LightPackageOps] for all packages on the device and for all system
* permission groups' ops.
*
* App ops data is retrieved from [AppOpsManager] and is updated whenever app ops data changes are
* heard.
*/
class AllLightPackageOpsLiveData(app: Application) :
SmartAsyncMediatorLiveData<Map<Pair<String, UserHandle>, LightPackageOps>>(),
AppOpsManager.OnOpActiveChangedListener,
AppOpsManager.OnOpNotedListener,
AppOpsManager.OnOpChangedListener {
private val appOpsManager = app.getSystemService(AppOpsManager::class.java)!!
private val userManager = app.getSystemService(UserManager::class.java)!!
private var opNames: MutableSet<String> =
getOpNames(StandardPermGroupNamesLiveData.value).toMutableSet()
init {
addSource(StandardPermGroupNamesLiveData) {
opNames = getOpNames(it).toMutableSet()
opNames.add(OPSTR_PHONE_CALL_MICROPHONE)
opNames.add(OPSTR_PHONE_CALL_CAMERA)
if (SdkLevel.isAtLeastT()) {
opNames.add(OPSTR_RECEIVE_AMBIENT_TRIGGER_AUDIO)
}
update()
}
}
override fun onActive() {
super.onActive()
opNames.forEach { opName ->
// TODO(b/262035952): We watch each active op individually as startWatchingActive only
// registers the callback if all ops are valid. Fix this behavior so if one op is
// invalid it doesn't affect the other ops.
try {
appOpsManager.startWatchingActive(arrayOf(opName), { it.run() }, this)
} catch (ignored: IllegalArgumentException) {
// Older builds may not support all requested app ops.
}
try {
appOpsManager.startWatchingMode(opName, /* all packages */ null, this)
} catch (ignored: IllegalArgumentException) {
// Older builds may not support all requested app ops.
}
if (SdkLevel.isAtLeastU()) {
try {
appOpsManager.startWatchingNoted(arrayOf(opName), this)
} catch (ignored: IllegalArgumentException) {
// Older builds may not support all requested app ops.
}
}
}
}
override fun onInactive() {
super.onInactive()
appOpsManager.stopWatchingActive(this)
appOpsManager.stopWatchingMode(this)
}
override suspend fun loadDataAndPostValue(job: Job) {
if (opNames.isEmpty()) {
return
}
val packageOpsList =
try {
appOpsManager.getPackagesForOps(opNames.toTypedArray())
} catch (e: NullPointerException) {
// Older builds may not support all requested app ops.
emptyList<AppOpsManager.PackageOps>()
}
val allProfilesInCurrentUser = userManager.userProfiles
postValue(
packageOpsList
.filter { UserHandle.getUserHandleForUid(it.uid) in allProfilesInCurrentUser }
.associateBy(
{ Pair(it.packageName, UserHandle.getUserHandleForUid(it.uid)) },
{ LightPackageOps(opNames, it) }))
}
override fun onOpChanged(op: String?, packageName: String?) {
update()
}
override fun onOpActiveChanged(op: String, uid: Int, packageName: String, active: Boolean) {
update()
}
override fun onOpNoted(
code: String,
uid: Int,
packageName: String,
attributionTag: String?,
flags: Int,
result: Int
) {
update()
}
/** Returns all op names for all permissions in a list of permission groups. */
private fun getOpNames(permissionGroupNames: List<String>?) =
permissionGroupNames
?.flatMap { group -> PermissionMapping.getPlatformPermissionNamesOfGroup(group) }
?.mapNotNull { permName -> AppOpsManager.permissionToOp(permName) }
?.toSet()
?: setOf()
}
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