Merge changes I7b7a0e4b,Ifc4a7f3f,I379f91fe,I444123e1 into rvc-dev (df9b0d63) · Commits · e / os / android_packages_apps_PackageInstaller

src/com/android/permissioncontroller/permission/data/LightPermInfoLiveData.kt

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		/*
		* Copyright (C) 2020 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.PackageManager
		import android.util.Log
		import com.android.permissioncontroller.PermissionControllerApplication
		import com.android.permissioncontroller.permission.model.livedatatypes.LightPermInfo
		import com.android.permissioncontroller.permission.utils.Utils.OS_PKG
		import com.android.permissioncontroller.permission.utils.Utils.isRuntimePlatformPermission
		import kotlinx.coroutines.Job

		/**
		* LiveData for a LightPermInfo.
		*
		* @param app current Application
		* @param permissionName name of the permission this LiveData will watch for mode changes for
		*/
		class LightPermInfoLiveData private constructor(
		private val app: Application,
		private val permissionName: String
		) : SmartAsyncMediatorLiveData<LightPermInfo>(),
		PackageBroadcastReceiver.PackageBroadcastListener {

		private val LOG_TAG = LightPermInfoLiveData::class.java.simpleName

		/** Is this liveData currently listing for changes */
		private var isListeningForChanges = false

		/**
		* Callback from the PackageBroadcastReceiver.
		*
		* <p>Package updates might change permission properties
		*/
		override fun onPackageUpdate(ignored: String) {
		updateAsync()
		}

		override fun updateAsync() {
		// No need to update if the value can never change
		if (value != null && isImmutable()) {
		return
		}

		super.updateAsync()
		}

		override suspend fun loadDataAndPostValue(job: Job) {
		if (job.isCancelled) {
		return
		}

		val newValue = try {
		LightPermInfo(app.packageManager.getPermissionInfo(permissionName, 0))
		} catch (e: PackageManager.NameNotFoundException) {
		Log.w(LOG_TAG, "Permission \"$permissionName\" not found")
		invalidateSingle(permissionName)
		null
		}

		if (isImmutable()) {
		stopListeningForChanges()
		}

		postValue(newValue)
		}

		/**
		* @return if the permission state can never change
		*/
		private fun isImmutable(): Boolean {
		// The os package never changes
		value?.let {
		if (it.packageName == OS_PKG) {
		return true
		}
		}

		// Platform permissions never change
		return isRuntimePlatformPermission(permissionName)
		}

		/**
		* Start listing for changes to this permission if needed
		*/
		private fun startListeningForChanges() {
		if (!isListeningForChanges && !isImmutable()) {
		isListeningForChanges = true
		PackageBroadcastReceiver.addAllCallback(this)
		}
		}

		/**
		* Stop listing for changes to this permission
		*/
		private fun stopListeningForChanges() {
		if (isListeningForChanges) {
		PackageBroadcastReceiver.removeAllCallback(this)
		isListeningForChanges = false
		}
		}

		override fun onActive() {
		super.onActive()

		startListeningForChanges()
		updateAsync()
		}

		override fun onInactive() {
		super.onInactive()

		stopListeningForChanges()
		}

		/**
		* Repository for LightPermInfoLiveData
		*
		* <p>Key value is a string permission name, value is its corresponding LiveData.
		*/
		companion object : DataRepositoryForPackage<String, LightPermInfoLiveData>() {
		override fun newValue(key: String): LightPermInfoLiveData {
		return LightPermInfoLiveData(PermissionControllerApplication.get(), key)
		}
		}
		}

src/com/android/permissioncontroller/permission/data/PreinstalledUserPackageInfosLiveData.kt

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		/*
		* Copyright (C) 2020 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.PackageManager.GET_PERMISSIONS
		import android.content.pm.PackageManager.MATCH_FACTORY_ONLY
		import android.content.pm.PackageManager.MATCH_UNINSTALLED_PACKAGES
		import android.os.UserHandle
		import com.android.permissioncontroller.PermissionControllerApplication
		import com.android.permissioncontroller.permission.model.livedatatypes.LightPackageInfo
		import kotlinx.coroutines.Job

		/**
		* A LiveData which returns all of the preinstalled packageinfos. For packages that are preinstalled
		* and then updated, the preinstalled (i.e. old) version is returned.
		*
		* @param app The current application
		* @param user The user whose packages are desired
		*/
		class PreinstalledUserPackageInfosLiveData private constructor(
		private val app: Application,
		private val user: UserHandle
		) : SmartAsyncMediatorLiveData<@kotlin.jvm.JvmSuppressWildcards List<LightPackageInfo>>() {

		/**
		* Get all of the preinstalled packages in the system for this user
		*/
		override suspend fun loadDataAndPostValue(job: Job) {
		if (job.isCancelled) {
		return
		}
		val packageInfos = app.applicationContext.packageManager
		.getInstalledPackagesAsUser(GET_PERMISSIONS or MATCH_UNINSTALLED_PACKAGES
		or MATCH_FACTORY_ONLY, user.identifier)
		postValue(packageInfos.map { packageInfo -> LightPackageInfo(packageInfo) })
		}

		override fun onActive() {
		super.onActive()

		// Data never changes, hence no need to reload
		if (value == null) {
		updateAsync()
		}
		}

		/**
		* Repository for PreinstalledUserPackageInfosLiveData.
		*
		* <p>Key value is a UserHandle, value is its corresponding LiveData.
		*/
		companion object : DataRepository<UserHandle, PreinstalledUserPackageInfosLiveData>() {
		override fun newValue(key: UserHandle): PreinstalledUserPackageInfosLiveData {
		return PreinstalledUserPackageInfosLiveData(PermissionControllerApplication.get(), key)
		}
		}
		}