packages/SettingsLib/src/com/android/settingslib/location/RecentLocationApps.java - platform/frameworks/base - Git at Google

 /*
  * Copyright (C) 2015 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.settingslib.location;

 import android.app.AppOpsManager;
 import android.content.Context;
 import android.content.PermissionChecker;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.graphics.drawable.Drawable;
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.text.format.DateUtils;
 import android.util.IconDrawableFactory;
 import android.util.Log;

 import androidx.annotation.VisibleForTesting;

 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Comparator;
 import java.util.List;

 /**
  * Retrieves the information of applications which accessed location recently.
  */
 public class RecentLocationApps {
     private static final String TAG = RecentLocationApps.class.getSimpleName();
     @VisibleForTesting
     static final String ANDROID_SYSTEM_PACKAGE_NAME = "android";

     // Keep last 24 hours of location app information.
     private static final long RECENT_TIME_INTERVAL_MILLIS = DateUtils.DAY_IN_MILLIS;

     @VisibleForTesting
     static final int[] LOCATION_REQUEST_OPS = new int[]{
             AppOpsManager.OP_MONITOR_LOCATION,
             AppOpsManager.OP_MONITOR_HIGH_POWER_LOCATION,
     };
     @VisibleForTesting
     static final int[] LOCATION_PERMISSION_OPS = new int[]{
             AppOpsManager.OP_FINE_LOCATION,
             AppOpsManager.OP_COARSE_LOCATION,
     };

     private final PackageManager mPackageManager;
     private final Context mContext;
     private final IconDrawableFactory mDrawableFactory;

     public RecentLocationApps(Context context) {
         mContext = context;
         mPackageManager = context.getPackageManager();
         mDrawableFactory = IconDrawableFactory.newInstance(context);
     }

     /**
      * Fills a list of applications which queried location recently within specified time.
      * Apps are sorted by recency. Apps with more recent location requests are in the front.
      */
     public List<Request> getAppList(boolean showSystemApps) {
         // Retrieve a location usage list from AppOps
         PackageManager pm = mContext.getPackageManager();
         // Retrieve a location usage list from AppOps
         AppOpsManager aoManager =
                 (AppOpsManager) mContext.getSystemService(Context.APP_OPS_SERVICE);
         List<AppOpsManager.PackageOps> appOps = aoManager.getPackagesForOps(LOCATION_REQUEST_OPS);

         final int appOpsCount = appOps != null ? appOps.size() : 0;

         // Process the AppOps list and generate a preference list.
         ArrayList<Request> requests = new ArrayList<>(appOpsCount);
         final long now = System.currentTimeMillis();
         final UserManager um = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
         final List<UserHandle> profiles = um.getUserProfiles();

         for (int i = 0; i < appOpsCount; ++i) {
             AppOpsManager.PackageOps ops = appOps.get(i);
             // Don't show the Android System in the list - it's not actionable for the user.
             // Also don't show apps belonging to background users except managed users.
             String packageName = ops.getPackageName();
             int uid = ops.getUid();
             final UserHandle user = UserHandle.getUserHandleForUid(uid);

             boolean isAndroidOs =
                     (uid == android.os.Process.SYSTEM_UID) && ANDROID_SYSTEM_PACKAGE_NAME.equals(
                             packageName);
             if (isAndroidOs || !profiles.contains(user)) {
                 continue;
             }

             // Don't show apps that do not have user sensitive location permissions
             boolean showApp = true;
             if (!showSystemApps) {
                 for (int op : LOCATION_PERMISSION_OPS) {
                     final String permission = AppOpsManager.opToPermission(op);
                     final int permissionFlags = pm.getPermissionFlags(permission, packageName,
                             user);
                     if (PermissionChecker.checkPermissionForPreflight(mContext, permission,
                             PermissionChecker.PID_UNKNOWN, uid, packageName)
                                     == PermissionChecker.PERMISSION_GRANTED) {
                         if ((permissionFlags
                                 & PackageManager.FLAG_PERMISSION_USER_SENSITIVE_WHEN_GRANTED)
                                 == 0) {
                             showApp = false;
                             break;
                         }
                     } else {
                         if ((permissionFlags
                                 & PackageManager.FLAG_PERMISSION_USER_SENSITIVE_WHEN_DENIED) == 0) {
                             showApp = false;
                             break;
                         }
                     }
                 }
             }
             if (showApp) {
                 Request request = getRequestFromOps(now, ops);
                 if (request != null) {
                     requests.add(request);
                 }
             }
         }
         return requests;
     }

     /**
      * Gets a list of apps that requested for location recently, sorting by recency.
      *
      * @param showSystemApps whether includes system apps in the list.
      * @return the list of apps that recently requested for location.
      */
     public List<Request> getAppListSorted(boolean showSystemApps) {
         List<Request> requests = getAppList(showSystemApps);
         // Sort the list of Requests by recency. Most recent request first.
         Collections.sort(requests, Collections.reverseOrder(new Comparator<Request>() {
             @Override
             public int compare(Request request1, Request request2) {
                 return Long.compare(request1.requestFinishTime, request2.requestFinishTime);
             }
         }));
         return requests;
     }

     /**
      * Creates a Request entry for the given PackageOps.
      *
      * This method examines the time interval of the PackageOps first. If the PackageOps is older
      * than the designated interval, this method ignores the PackageOps object and returns null.
      * When the PackageOps is fresh enough, this method returns a Request object for the package
      */
     private Request getRequestFromOps(long now,
             AppOpsManager.PackageOps ops) {
         String packageName = ops.getPackageName();
         List<AppOpsManager.OpEntry> entries = ops.getOps();
         boolean highBattery = false;
         boolean normalBattery = false;
         long locationRequestFinishTime = 0L;
         // Earliest time for a location request to end and still be shown in list.
         long recentLocationCutoffTime = now - RECENT_TIME_INTERVAL_MILLIS;
         for (AppOpsManager.OpEntry entry : entries) {
             if (entry.isRunning() || entry.getTime() >= recentLocationCutoffTime) {
                 locationRequestFinishTime = entry.getTime() + entry.getDuration();
                 switch (entry.getOp()) {
                     case AppOpsManager.OP_MONITOR_LOCATION:
                         normalBattery = true;
                         break;
                     case AppOpsManager.OP_MONITOR_HIGH_POWER_LOCATION:
                         highBattery = true;
                         break;
                     default:
                         break;
                 }
             }
         }

         if (!highBattery && !normalBattery) {
             if (Log.isLoggable(TAG, Log.VERBOSE)) {
                 Log.v(TAG, packageName + " hadn't used location within the time interval.");
             }
             return null;
         }

         // The package is fresh enough, continue.
         int uid = ops.getUid();
         int userId = UserHandle.getUserId(uid);

         Request request = null;
         try {
             ApplicationInfo appInfo = mPackageManager.getApplicationInfoAsUser(
                     packageName, PackageManager.GET_META_DATA, userId);
             if (appInfo == null) {
                 Log.w(TAG, "Null application info retrieved for package " + packageName
                         + ", userId " + userId);
                 return null;
             }

             final UserHandle userHandle = new UserHandle(userId);
             Drawable icon = mDrawableFactory.getBadgedIcon(appInfo, userId);
             CharSequence appLabel = mPackageManager.getApplicationLabel(appInfo);
             CharSequence badgedAppLabel = mPackageManager.getUserBadgedLabel(appLabel, userHandle);
             if (appLabel.toString().contentEquals(badgedAppLabel)) {
                 // If badged label is not different from original then no need for it as
                 // a separate content description.
                 badgedAppLabel = null;
             }
             request = new Request(packageName, userHandle, icon, appLabel, highBattery,
                     badgedAppLabel, locationRequestFinishTime);
         } catch (NameNotFoundException e) {
             Log.w(TAG, "package name not found for " + packageName + ", userId " + userId);
         }
         return request;
     }

     public static class Request {
         public final String packageName;
         public final UserHandle userHandle;
         public final Drawable icon;
         public final CharSequence label;
         public final boolean isHighBattery;
         public final CharSequence contentDescription;
         public final long requestFinishTime;

         private Request(String packageName, UserHandle userHandle, Drawable icon,
                 CharSequence label, boolean isHighBattery, CharSequence contentDescription,
                 long requestFinishTime) {
             this.packageName = packageName;
             this.userHandle = userHandle;
             this.icon = icon;
             this.label = label;
             this.isHighBattery = isHighBattery;
             this.contentDescription = contentDescription;
             this.requestFinishTime = requestFinishTime;
         }
     }
 }
	/*
	* Copyright (C) 2015 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.settingslib.location;

	import android.app.AppOpsManager;
	import android.content.Context;
	import android.content.PermissionChecker;
	import android.content.pm.ApplicationInfo;
	import android.content.pm.PackageManager;
	import android.content.pm.PackageManager.NameNotFoundException;
	import android.graphics.drawable.Drawable;
	import android.os.UserHandle;
	import android.os.UserManager;
	import android.text.format.DateUtils;
	import android.util.IconDrawableFactory;
	import android.util.Log;

	import androidx.annotation.VisibleForTesting;

	import java.util.ArrayList;
	import java.util.Collections;
	import java.util.Comparator;
	import java.util.List;

	/**
	* Retrieves the information of applications which accessed location recently.
	*/
	public class RecentLocationApps {
	private static final String TAG = RecentLocationApps.class.getSimpleName();
	@VisibleForTesting
	static final String ANDROID_SYSTEM_PACKAGE_NAME = "android";

	// Keep last 24 hours of location app information.
	private static final long RECENT_TIME_INTERVAL_MILLIS = DateUtils.DAY_IN_MILLIS;

	@VisibleForTesting
	static final int[] LOCATION_REQUEST_OPS = new int[]{
	AppOpsManager.OP_MONITOR_LOCATION,
	AppOpsManager.OP_MONITOR_HIGH_POWER_LOCATION,
	};
	@VisibleForTesting
	static final int[] LOCATION_PERMISSION_OPS = new int[]{
	AppOpsManager.OP_FINE_LOCATION,
	AppOpsManager.OP_COARSE_LOCATION,
	};

	private final PackageManager mPackageManager;
	private final Context mContext;
	private final IconDrawableFactory mDrawableFactory;

	public RecentLocationApps(Context context) {
	mContext = context;
	mPackageManager = context.getPackageManager();
	mDrawableFactory = IconDrawableFactory.newInstance(context);
	}

	/**
	* Fills a list of applications which queried location recently within specified time.
	* Apps are sorted by recency. Apps with more recent location requests are in the front.
	*/
	public List<Request> getAppList(boolean showSystemApps) {
	// Retrieve a location usage list from AppOps
	PackageManager pm = mContext.getPackageManager();
	// Retrieve a location usage list from AppOps
	AppOpsManager aoManager =
	(AppOpsManager) mContext.getSystemService(Context.APP_OPS_SERVICE);
	List<AppOpsManager.PackageOps> appOps = aoManager.getPackagesForOps(LOCATION_REQUEST_OPS);

	final int appOpsCount = appOps != null ? appOps.size() : 0;

	// Process the AppOps list and generate a preference list.
	ArrayList<Request> requests = new ArrayList<>(appOpsCount);
	final long now = System.currentTimeMillis();
	final UserManager um = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
	final List<UserHandle> profiles = um.getUserProfiles();

	for (int i = 0; i < appOpsCount; ++i) {
	AppOpsManager.PackageOps ops = appOps.get(i);
	// Don't show the Android System in the list - it's not actionable for the user.
	// Also don't show apps belonging to background users except managed users.
	String packageName = ops.getPackageName();
	int uid = ops.getUid();
	final UserHandle user = UserHandle.getUserHandleForUid(uid);

	boolean isAndroidOs =
	(uid == android.os.Process.SYSTEM_UID) && ANDROID_SYSTEM_PACKAGE_NAME.equals(
	packageName);
	if (isAndroidOs \|\| !profiles.contains(user)) {
	continue;
	}

	// Don't show apps that do not have user sensitive location permissions
	boolean showApp = true;
	if (!showSystemApps) {
	for (int op : LOCATION_PERMISSION_OPS) {
	final String permission = AppOpsManager.opToPermission(op);
	final int permissionFlags = pm.getPermissionFlags(permission, packageName,
	user);
	if (PermissionChecker.checkPermissionForPreflight(mContext, permission,
	PermissionChecker.PID_UNKNOWN, uid, packageName)
	== PermissionChecker.PERMISSION_GRANTED) {
	if ((permissionFlags
	& PackageManager.FLAG_PERMISSION_USER_SENSITIVE_WHEN_GRANTED)
	== 0) {
	showApp = false;
	break;
	}
	} else {
	if ((permissionFlags
	& PackageManager.FLAG_PERMISSION_USER_SENSITIVE_WHEN_DENIED) == 0) {
	showApp = false;
	break;
	}
	}
	}
	}
	if (showApp) {
	Request request = getRequestFromOps(now, ops);
	if (request != null) {
	requests.add(request);
	}
	}
	}
	return requests;
	}

	/**
	* Gets a list of apps that requested for location recently, sorting by recency.
	*
	* @param showSystemApps whether includes system apps in the list.
	* @return the list of apps that recently requested for location.
	*/
	public List<Request> getAppListSorted(boolean showSystemApps) {
	List<Request> requests = getAppList(showSystemApps);
	// Sort the list of Requests by recency. Most recent request first.
	Collections.sort(requests, Collections.reverseOrder(new Comparator<Request>() {
	@Override
	public int compare(Request request1, Request request2) {
	return Long.compare(request1.requestFinishTime, request2.requestFinishTime);
	}
	}));
	return requests;
	}

	/**
	* Creates a Request entry for the given PackageOps.
	*
	* This method examines the time interval of the PackageOps first. If the PackageOps is older
	* than the designated interval, this method ignores the PackageOps object and returns null.
	* When the PackageOps is fresh enough, this method returns a Request object for the package
	*/
	private Request getRequestFromOps(long now,
	AppOpsManager.PackageOps ops) {
	String packageName = ops.getPackageName();
	List<AppOpsManager.OpEntry> entries = ops.getOps();
	boolean highBattery = false;
	boolean normalBattery = false;
	long locationRequestFinishTime = 0L;
	// Earliest time for a location request to end and still be shown in list.
	long recentLocationCutoffTime = now - RECENT_TIME_INTERVAL_MILLIS;
	for (AppOpsManager.OpEntry entry : entries) {
	if (entry.isRunning() \|\| entry.getTime() >= recentLocationCutoffTime) {
	locationRequestFinishTime = entry.getTime() + entry.getDuration();
	switch (entry.getOp()) {
	case AppOpsManager.OP_MONITOR_LOCATION:
	normalBattery = true;
	break;
	case AppOpsManager.OP_MONITOR_HIGH_POWER_LOCATION:
	highBattery = true;
	break;
	default:
	break;
	}
	}
	}

	if (!highBattery && !normalBattery) {
	if (Log.isLoggable(TAG, Log.VERBOSE)) {
	Log.v(TAG, packageName + " hadn't used location within the time interval.");
	}
	return null;
	}

	// The package is fresh enough, continue.
	int uid = ops.getUid();
	int userId = UserHandle.getUserId(uid);

	Request request = null;
	try {
	ApplicationInfo appInfo = mPackageManager.getApplicationInfoAsUser(
	packageName, PackageManager.GET_META_DATA, userId);
	if (appInfo == null) {
	Log.w(TAG, "Null application info retrieved for package " + packageName
	+ ", userId " + userId);
	return null;
	}

	final UserHandle userHandle = new UserHandle(userId);
	Drawable icon = mDrawableFactory.getBadgedIcon(appInfo, userId);
	CharSequence appLabel = mPackageManager.getApplicationLabel(appInfo);
	CharSequence badgedAppLabel = mPackageManager.getUserBadgedLabel(appLabel, userHandle);
	if (appLabel.toString().contentEquals(badgedAppLabel)) {
	// If badged label is not different from original then no need for it as
	// a separate content description.
	badgedAppLabel = null;
	}
	request = new Request(packageName, userHandle, icon, appLabel, highBattery,
	badgedAppLabel, locationRequestFinishTime);
	} catch (NameNotFoundException e) {
	Log.w(TAG, "package name not found for " + packageName + ", userId " + userId);
	}
	return request;
	}

	public static class Request {
	public final String packageName;
	public final UserHandle userHandle;
	public final Drawable icon;
	public final CharSequence label;
	public final boolean isHighBattery;
	public final CharSequence contentDescription;
	public final long requestFinishTime;

	private Request(String packageName, UserHandle userHandle, Drawable icon,
	CharSequence label, boolean isHighBattery, CharSequence contentDescription,
	long requestFinishTime) {
	this.packageName = packageName;
	this.userHandle = userHandle;
	this.icon = icon;
	this.label = label;
	this.isHighBattery = isHighBattery;
	this.contentDescription = contentDescription;
	this.requestFinishTime = requestFinishTime;
	}
	}
	}