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A library jar that provides APIs for Applications written for the Google Android Platform.
/*
* 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 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 appOps = aoManager.getPackagesForOps(LOCATION_REQUEST_OPS);
final int appOpsCount = appOps != null ? appOps.size() : 0;
// Process the AppOps list and generate a preference list.
ArrayList requests = new ArrayList<>(appOpsCount);
final long now = System.currentTimeMillis();
final UserManager um = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
final List 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 getAppListSorted(boolean showSystemApps) {
List requests = getAppList(showSystemApps);
// Sort the list of Requests by recency. Most recent request first.
Collections.sort(requests, Collections.reverseOrder(new Comparator() {
@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 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;
public 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;
}
}
}
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