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/*
* Copyright (C) 2019 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
import android.app.Application
import android.content.pm.PackageItemInfo
import android.content.pm.PackageManager
import android.content.pm.PermissionGroupInfo
import android.content.pm.PermissionInfo
import android.os.UserHandle
import android.util.Log
import com.android.permissioncontroller.PermissionControllerApplication
import com.android.permissioncontroller.permission.model.livedatatypes.LightPermGroupInfo
import com.android.permissioncontroller.permission.model.livedatatypes.LightPermInfo
import com.android.permissioncontroller.permission.model.livedatatypes.PermGroup
import com.android.permissioncontroller.permission.utils.Utils
/**
* LiveData for a Permission Group. Contains GroupInfo and a list of PermissionInfos. Loads
* synchronously.
*
* @param app The current application
* @param groupName The name of the permission group this LiveData represents
*/
class PermGroupLiveData private constructor(
private val app: Application,
private val groupName: String
) : SmartUpdateMediatorLiveData<PermGroup>(),
PackageBroadcastReceiver.PackageBroadcastListener {
private val LOG_TAG = this::class.java.simpleName
private val context = app.applicationContext!!
/**
* Map<packageName, LiveData<PackageInfo>>
*/
private val packageLiveDatas = mutableMapOf<String, LightPackageInfoLiveData>()
private lateinit var groupInfo: PackageItemInfo
/**
* Called when a package is installed, changed, or removed.
*
* @param packageName the package which was added or changed
*/
override fun onPackageUpdate(packageName: String) {
update()
}
/**
* Initializes this permission group from scratch. Resets the groupInfo, PermissionInfos, and
* PackageInfoLiveDatas, then re-adds them.
*/
override fun onUpdate() {
val permissionInfos = mutableMapOf<String, LightPermInfo>()
groupInfo = Utils.getGroupInfo(groupName, context) ?: run {
Log.e(LOG_TAG, "Invalid permission group $groupName")
invalidateSingle(groupName)
value = null
return
}
when (groupInfo) {
is PermissionGroupInfo -> {
val permInfos = try {
Utils.getInstalledRuntimePermissionInfosForGroup(context.packageManager,
groupName)
} catch (e: PackageManager.NameNotFoundException) {
Log.e(LOG_TAG, "Invalid permission group $groupName")
invalidateSingle(groupName)
value = null
return
}
for (permInfo in permInfos) {
permissionInfos[permInfo.name] = LightPermInfo(permInfo)
}
}
is PermissionInfo -> {
permissionInfos[groupInfo.name] = LightPermInfo(groupInfo as PermissionInfo)
}
else -> {
value = null
return
}
}
val permGroup = PermGroup(LightPermGroupInfo(groupInfo), permissionInfos)
value = permGroup
val packageNames = permissionInfos.values.map { permInfo -> permInfo.packageName }
.toMutableSet()
packageNames.add(groupInfo.packageName)
// TODO ntmyren: What if the package isn't installed for the system user?
val getLiveData = { packageName: String ->
LightPackageInfoLiveData[packageName, UserHandle.SYSTEM]
}
setSourcesToDifference(packageNames, packageLiveDatas, getLiveData)
}
override fun onInactive() {
super.onInactive()
PackageBroadcastReceiver.removeAllCallback(this)
}
/**
* Load data, and register a package change listener. We must watch for package changes,
* because there is currently no listener for permission changes.
*/
override fun onActive() {
update()
super.onActive()
PackageBroadcastReceiver.addAllCallback(this)
}
/**
* Repository for PermGroupLiveDatas.
* <p> Key value is a string permission group name, value is its corresponding LiveData.
*/
companion object : DataRepository<String, PermGroupLiveData>() {
override fun newValue(key: String): PermGroupLiveData {
return PermGroupLiveData(PermissionControllerApplication.get(), key)
}
}
}
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