/*
* 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.AppGlobals;
import android.app.AppOpsManager;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.IPackageManager;
import android.content.pm.PackageManager;
import android.graphics.drawable.Drawable;
import android.os.Process;
import android.os.RemoteException;
import android.os.UserHandle;
import android.os.UserManager;
import android.util.Log;
import java.util.ArrayList;
import java.util.List;
/**
* Retrieves the information of applications which accessed location recently.
*/
public class RecentLocationApps {
private static final String TAG = RecentLocationApps.class.getSimpleName();
private static final String ANDROID_SYSTEM_PACKAGE_NAME = "android";
private static final int RECENT_TIME_INTERVAL_MILLIS = 15 * 60 * 1000;
private static final int[] LOCATION_OPS = new int[] {
AppOpsManager.OP_MONITOR_LOCATION,
AppOpsManager.OP_MONITOR_HIGH_POWER_LOCATION,
};
private final PackageManager mPackageManager;
private final Context mContext;
public RecentLocationApps(Context context) {
mContext = context;
mPackageManager = context.getPackageManager();
}
/**
* Fills a list of applications which queried location recently within specified time.
*/
public List<Request> getAppList() {
// Retrieve a location usage list from AppOps
AppOpsManager aoManager =
(AppOpsManager) mContext.getSystemService(Context.APP_OPS_SERVICE);
List<AppOpsManager.PackageOps> appOps = aoManager.getPackagesForOps(LOCATION_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();
int userId = UserHandle.getUserId(uid);
boolean isAndroidOs =
(uid == Process.SYSTEM_UID) && ANDROID_SYSTEM_PACKAGE_NAME.equals(packageName);
if (isAndroidOs || !profiles.contains(new UserHandle(userId))) {
continue;
}
Request request = getRequestFromOps(now, ops);
if (request != null) {
requests.add(request);
}
}
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;
// 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) {
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 {
IPackageManager ipm = AppGlobals.getPackageManager();
ApplicationInfo appInfo =
ipm.getApplicationInfo(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 appIcon = mPackageManager.getApplicationIcon(appInfo);
Drawable icon = mPackageManager.getUserBadgedIcon(appIcon, userHandle);
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);
} catch (RemoteException e) {
Log.w(TAG, "Error while retrieving application info for package " + packageName
+ ", userId " + userId, e);
}
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;
private Request(String packageName, UserHandle userHandle, Drawable icon,
CharSequence label, boolean isHighBattery, CharSequence contentDescription) {
this.packageName = packageName;
this.userHandle = userHandle;
this.icon = icon;
this.label = label;
this.isHighBattery = isHighBattery;
this.contentDescription = contentDescription;
}
}
}