6fa9ad4afc
Themes: Fused Location, Geofencing, LocationRequest. API changes o Fused location is always returned when asking for location by Criteria. o Fused location is never returned as a LocationProvider object, nor returned as a provider String. This wouldn't make sense because the current API design assumes that LocationProvider's have fixed properties (accuracy, power etc). o The fused location engine will tune itself based on the criteria passed by applications. o Deprecate LocationProvider. Apps should use fused location (via Criteria class), instead of enumerating through LocationProvider objects. It is also over-engineered: designed for a world with a plethora of location providers that never materialized. o The Criteria class is also over-engineered, with many methods that aren't currently used, but for now we won't deprecate them since they may have value in the future. It is now used to tune the fused location engine. o Deprecate getBestProvider() and getProvider(). o Add getLastKnownLocation(Criteria), so we can return last known fused locations. o Apps with only ACCESS_COARSE_LOCATION _can_ now use the GPS, but the location they receive will be fudged to a 1km radius. They can also use NETWORK and fused locatoins, which are fudged in the same way if necessary. o Totally deprecate Criteria, in favor of LocationRequest. Criteria was designed to map QOS to a location provider. What we really need is to map QOS to _locations_. The death knell was the conflicting ACCURACY_ constants on Criteria, with values 1, 2, 3, 1, 2. Yes not a typo. o Totally deprecate LocationProvider. o Deprecate test/mock provider support. They require a named provider, which is a concept we are moving away from. We do not yet have a replacement, but I think its ok to deprecate since you also need to have 'allow mock locations' checked in developer settings. They will continue to work. o Deprecate event codes associated with provider status. The fused provider is _always_ available. o Introduce Geofence data object to provide an easier path fowards for polygons etc. Implementation changes o Fused implementation: incoming (GPS and NLP) location fixes are given a weight, that exponentially decays with respect to age and accuracy. The half-life of age is ~60 seconds, and the half-life of accuracy is ~20 meters. The fixes are weighted and combined to output a fused location. o Move Fused Location impl into frameworks/base/packages/FusedLocation o Refactor Fused Location behind the IProvider AIDL interface. This allow us to distribute newer versions of Fused Location in a new APK, at run-time. o Introduce ServiceWatcher.java, to refactor code used for run-time upgrades of Fused Location, and the NLP. o Fused Location is by default run in the system server (but can be moved to any process or pacakge, even at run-time). o Plumb the Criteria requirements through to the Fused Location provider via ILocation.sendExtraCommand(). I re-used this interface to avoid modifying the ILocation interface, which would have broken run-time upgradability of the NLP. o Switch the geofence manager to using fused location. o Clean up 'adb shell dumpsys location' output. o Introduce config_locationProviderPackageNames and config_overlay_locationProviderPackageNames to configure the default and overlay package names for Geocoder, NLP and FLP. o Lots of misc cleanup. o Improve location fudging. Apply random vector then quantize. o Hide internal POJO's from clients of com.android.location.provider.jar (NLP and FLP). Introduce wrappers ProviderRequestUnbundled and ProviderPropertiesUnbundled. o Introduce ProviderProperties to collapse all the provider accuracy/ bearing/altitude/power plumbing (that is deprecated anyway). o DELETE lots of code: DummyLocationProvider, o Rename the (internal) LocationProvider to LocationProviderBase. o Plumb pid, uid and packageName throughout LocationManagerService#Receiver to support future features. TODO: The FLP and Geofencer have a lot of room to be more intelligent TODO: Documentation TODO: test test test Change-Id: Iacefd2f176ed40ce1e23b090a164792aa8819c55
1841 lines
69 KiB
Java
1841 lines
69 KiB
Java
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server;
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import android.app.PendingIntent;
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import android.content.ContentQueryMap;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.content.pm.ApplicationInfo;
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import android.content.pm.PackageManager;
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import android.content.pm.PackageManager.NameNotFoundException;
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import android.content.res.Resources;
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import android.database.Cursor;
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import android.location.Address;
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import android.location.Criteria;
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import android.location.GeocoderParams;
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import android.location.Geofence;
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import android.location.IGpsStatusListener;
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import android.location.IGpsStatusProvider;
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import android.location.ILocationListener;
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import android.location.ILocationManager;
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import android.location.INetInitiatedListener;
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import android.location.Location;
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import android.location.LocationManager;
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import android.location.LocationProvider;
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import android.location.LocationRequest;
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import android.net.ConnectivityManager;
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import android.os.Binder;
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import android.os.Bundle;
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import android.os.Handler;
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import android.os.IBinder;
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import android.os.Looper;
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import android.os.Message;
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import android.os.Parcelable;
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import android.os.PowerManager;
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import android.os.Process;
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import android.os.RemoteException;
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import android.os.SystemClock;
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import android.os.WorkSource;
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import android.provider.Settings;
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import android.provider.Settings.NameValueTable;
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import android.util.Log;
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import android.util.Slog;
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import com.android.internal.content.PackageMonitor;
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import com.android.internal.location.ProviderProperties;
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import com.android.internal.location.ProviderRequest;
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import com.android.server.location.GeocoderProxy;
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import com.android.server.location.GeofenceManager;
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import com.android.server.location.GpsLocationProvider;
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import com.android.server.location.LocationProviderInterface;
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import com.android.server.location.LocationProviderProxy;
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import com.android.server.location.MockProvider;
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import com.android.server.location.PassiveProvider;
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import java.io.FileDescriptor;
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import java.io.PrintWriter;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Map;
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import java.util.Observable;
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import java.util.Observer;
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import java.util.Set;
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/**
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* The service class that manages LocationProviders and issues location
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* updates and alerts.
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*/
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public class LocationManagerService extends ILocationManager.Stub implements Observer, Runnable {
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private static final String TAG = "LocationManagerService";
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public static final boolean D = false;
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private static final String WAKELOCK_KEY = TAG;
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private static final String THREAD_NAME = TAG;
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private static final String ACCESS_FINE_LOCATION =
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android.Manifest.permission.ACCESS_FINE_LOCATION;
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private static final String ACCESS_COARSE_LOCATION =
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android.Manifest.permission.ACCESS_COARSE_LOCATION;
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private static final String ACCESS_MOCK_LOCATION =
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android.Manifest.permission.ACCESS_MOCK_LOCATION;
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private static final String ACCESS_LOCATION_EXTRA_COMMANDS =
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android.Manifest.permission.ACCESS_LOCATION_EXTRA_COMMANDS;
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private static final String INSTALL_LOCATION_PROVIDER =
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android.Manifest.permission.INSTALL_LOCATION_PROVIDER;
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private static final String NETWORK_LOCATION_SERVICE_ACTION =
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"com.android.location.service.v2.NetworkLocationProvider";
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private static final String FUSED_LOCATION_SERVICE_ACTION =
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"com.android.location.service.FusedLocationProvider";
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private static final int MSG_LOCATION_CHANGED = 1;
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// Accuracy in meters above which a location is considered coarse
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private static final double COARSE_ACCURACY_M = 100.0;
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private static final String EXTRA_COARSE_LOCATION = "coarseLocation";
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private static final int APPROXIMATE_METERS_PER_DEGREE_AT_EQUATOR = 111000;
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/**
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* Maximum latitude of 1 meter from the pole.
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* This keeps cosine(MAX_LATITUDE) to a non-zero value;
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*/
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private static final double MAX_LATITUDE =
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90.0 - (1.0 / APPROXIMATE_METERS_PER_DEGREE_AT_EQUATOR);
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// Location Providers may sometimes deliver location updates
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// slightly faster that requested - provide grace period so
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// we don't unnecessarily filter events that are otherwise on
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// time
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private static final int MAX_PROVIDER_SCHEDULING_JITTER_MS = 100;
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private static final LocationRequest DEFAULT_LOCATION_REQUEST = new LocationRequest();
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private final Context mContext;
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// used internally for synchronization
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private final Object mLock = new Object();
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// --- fields below are final after init() ---
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private GeofenceManager mGeofenceManager;
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private PowerManager.WakeLock mWakeLock;
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private PackageManager mPackageManager;
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private GeocoderProxy mGeocodeProvider;
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private IGpsStatusProvider mGpsStatusProvider;
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private INetInitiatedListener mNetInitiatedListener;
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private LocationWorkerHandler mLocationHandler;
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// track the passive provider for some special cases
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private PassiveProvider mPassiveProvider;
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// --- fields below are protected by mWakeLock ---
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private int mPendingBroadcasts;
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// --- fields below are protected by mLock ---
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// Set of providers that are explicitly enabled
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private final Set<String> mEnabledProviders = new HashSet<String>();
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// Set of providers that are explicitly disabled
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private final Set<String> mDisabledProviders = new HashSet<String>();
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// Mock (test) providers
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private final HashMap<String, MockProvider> mMockProviders =
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new HashMap<String, MockProvider>();
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// all receivers
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private final HashMap<Object, Receiver> mReceivers = new HashMap<Object, Receiver>();
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// currently installed providers (with mocks replacing real providers)
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private final ArrayList<LocationProviderInterface> mProviders =
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new ArrayList<LocationProviderInterface>();
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// real providers, saved here when mocked out
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private final HashMap<String, LocationProviderInterface> mRealProviders =
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new HashMap<String, LocationProviderInterface>();
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// mapping from provider name to provider
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private final HashMap<String, LocationProviderInterface> mProvidersByName =
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new HashMap<String, LocationProviderInterface>();
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// mapping from provider name to all its UpdateRecords
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private final HashMap<String, ArrayList<UpdateRecord>> mRecordsByProvider =
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new HashMap<String, ArrayList<UpdateRecord>>();
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// mapping from provider name to last known location
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private final HashMap<String, Location> mLastLocation = new HashMap<String, Location>();
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// all providers that operate over proxy, for authorizing incoming location
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private final ArrayList<LocationProviderProxy> mProxyProviders =
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new ArrayList<LocationProviderProxy>();
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public LocationManagerService(Context context) {
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super();
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mContext = context;
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if (D) Log.d(TAG, "Constructed");
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// most startup is deferred until systemReady()
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}
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public void systemReady() {
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Thread thread = new Thread(null, this, THREAD_NAME);
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thread.start();
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}
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@Override
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public void run() {
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Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND);
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Looper.prepare();
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mLocationHandler = new LocationWorkerHandler();
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init();
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Looper.loop();
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}
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private void init() {
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if (D) Log.d(TAG, "init()");
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PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
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mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, WAKELOCK_KEY);
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mPackageManager = mContext.getPackageManager();
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synchronized (mLock) {
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loadProvidersLocked();
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}
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mGeofenceManager = new GeofenceManager(mContext);
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// Register for Network (Wifi or Mobile) updates
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IntentFilter filter = new IntentFilter();
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filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
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// listen for settings changes
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ContentResolver resolver = mContext.getContentResolver();
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Cursor settingsCursor = resolver.query(Settings.Secure.CONTENT_URI, null,
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"(" + NameValueTable.NAME + "=?)",
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new String[]{Settings.Secure.LOCATION_PROVIDERS_ALLOWED}, null);
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ContentQueryMap query = new ContentQueryMap(settingsCursor, NameValueTable.NAME, true,
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mLocationHandler);
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settingsCursor.close();
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query.addObserver(this);
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mPackageMonitor.register(mContext, Looper.myLooper(), true);
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}
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private void loadProvidersLocked() {
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if (GpsLocationProvider.isSupported()) {
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// Create a gps location provider
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GpsLocationProvider gpsProvider = new GpsLocationProvider(mContext, this);
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mGpsStatusProvider = gpsProvider.getGpsStatusProvider();
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mNetInitiatedListener = gpsProvider.getNetInitiatedListener();
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addProviderLocked(gpsProvider);
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mRealProviders.put(LocationManager.GPS_PROVIDER, gpsProvider);
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}
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// create a passive location provider, which is always enabled
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PassiveProvider passiveProvider = new PassiveProvider(this);
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addProviderLocked(passiveProvider);
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mEnabledProviders.add(passiveProvider.getName());
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mPassiveProvider = passiveProvider;
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/*
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Load package name(s) containing location provider support.
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These packages can contain services implementing location providers:
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Geocoder Provider, Network Location Provider, and
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Fused Location Provider. They will each be searched for
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service components implementing these providers.
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The location framework also has support for installation
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of new location providers at run-time. The new package does not
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have to be explicitly listed here, however it must have a signature
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that matches the signature of at least one package on this list.
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*/
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Resources resources = mContext.getResources();
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ArrayList<String> providerPackageNames = new ArrayList<String>();
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String[] pkgs1 = resources.getStringArray(
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com.android.internal.R.array.config_locationProviderPackageNames);
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String[] pkgs2 = resources.getStringArray(
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com.android.internal.R.array.config_overlay_locationProviderPackageNames);
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if (D) Log.d(TAG, "built-in location providers: " + Arrays.toString(pkgs1));
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if (D) Log.d(TAG, "overlay location providers: " + Arrays.toString(pkgs2));
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if (pkgs1 != null) providerPackageNames.addAll(Arrays.asList(pkgs1));
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if (pkgs2 != null) providerPackageNames.addAll(Arrays.asList(pkgs2));
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// bind to network provider
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LocationProviderProxy networkProvider = LocationProviderProxy.createAndBind(
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mContext,
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LocationManager.NETWORK_PROVIDER,
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NETWORK_LOCATION_SERVICE_ACTION,
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providerPackageNames, mLocationHandler);
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if (networkProvider != null) {
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mRealProviders.put(LocationManager.NETWORK_PROVIDER, networkProvider);
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mProxyProviders.add(networkProvider);
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addProviderLocked(networkProvider);
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} else {
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Slog.w(TAG, "no network location provider found");
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}
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// bind to fused provider
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LocationProviderProxy fusedLocationProvider = LocationProviderProxy.createAndBind(
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mContext,
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LocationManager.FUSED_PROVIDER,
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FUSED_LOCATION_SERVICE_ACTION,
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providerPackageNames, mLocationHandler);
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if (fusedLocationProvider != null) {
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addProviderLocked(fusedLocationProvider);
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mProxyProviders.add(fusedLocationProvider);
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mEnabledProviders.add(fusedLocationProvider.getName());
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} else {
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Slog.e(TAG, "no fused location provider found",
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new IllegalStateException("Location service needs a fused location provider"));
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}
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// bind to geocoder provider
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mGeocodeProvider = GeocoderProxy.createAndBind(mContext, providerPackageNames);
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if (mGeocodeProvider == null) {
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Slog.e(TAG, "no geocoder provider found");
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}
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updateProvidersLocked();
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}
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/**
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* A wrapper class holding either an ILocationListener or a PendingIntent to receive
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* location updates.
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*/
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private final class Receiver implements IBinder.DeathRecipient, PendingIntent.OnFinished {
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final int mUid; // uid of receiver
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final int mPid; // pid of receiver
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final String mPackageName; // package name of receiver
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final String mPermission; // best permission that receiver has
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final ILocationListener mListener;
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final PendingIntent mPendingIntent;
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final Object mKey;
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final HashMap<String,UpdateRecord> mUpdateRecords = new HashMap<String,UpdateRecord>();
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int mPendingBroadcasts;
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Receiver(ILocationListener listener, PendingIntent intent, int pid, int uid,
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String packageName) {
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mListener = listener;
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mPendingIntent = intent;
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if (listener != null) {
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mKey = listener.asBinder();
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} else {
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mKey = intent;
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}
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mPermission = checkPermission();
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mUid = uid;
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mPid = pid;
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mPackageName = packageName;
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}
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@Override
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public boolean equals(Object otherObj) {
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if (otherObj instanceof Receiver) {
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return mKey.equals(((Receiver)otherObj).mKey);
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}
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return false;
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}
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@Override
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public int hashCode() {
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return mKey.hashCode();
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}
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@Override
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public String toString() {
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StringBuilder s = new StringBuilder();
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s.append("Reciever[");
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s.append(Integer.toHexString(System.identityHashCode(this)));
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if (mListener != null) {
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s.append(" listener");
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} else {
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s.append(" intent");
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}
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for (String p : mUpdateRecords.keySet()) {
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s.append(" ").append(mUpdateRecords.get(p).toString());
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}
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s.append("]");
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return s.toString();
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}
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public boolean isListener() {
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return mListener != null;
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}
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public boolean isPendingIntent() {
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return mPendingIntent != null;
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}
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public ILocationListener getListener() {
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if (mListener != null) {
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return mListener;
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}
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throw new IllegalStateException("Request for non-existent listener");
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}
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public boolean callStatusChangedLocked(String provider, int status, Bundle extras) {
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if (mListener != null) {
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try {
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synchronized (this) {
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// synchronize to ensure incrementPendingBroadcastsLocked()
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// is called before decrementPendingBroadcasts()
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mListener.onStatusChanged(provider, status, extras);
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// call this after broadcasting so we do not increment
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// if we throw an exeption.
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incrementPendingBroadcastsLocked();
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}
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} catch (RemoteException e) {
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return false;
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}
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} else {
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Intent statusChanged = new Intent();
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statusChanged.putExtras(extras);
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statusChanged.putExtra(LocationManager.KEY_STATUS_CHANGED, status);
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try {
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synchronized (this) {
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// synchronize to ensure incrementPendingBroadcastsLocked()
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// is called before decrementPendingBroadcasts()
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mPendingIntent.send(mContext, 0, statusChanged, this, mLocationHandler,
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mPermission);
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// call this after broadcasting so we do not increment
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// if we throw an exeption.
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incrementPendingBroadcastsLocked();
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}
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} catch (PendingIntent.CanceledException e) {
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return false;
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}
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}
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return true;
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}
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public boolean callLocationChangedLocked(Location location) {
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if (mListener != null) {
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try {
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synchronized (this) {
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// synchronize to ensure incrementPendingBroadcastsLocked()
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// is called before decrementPendingBroadcasts()
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mListener.onLocationChanged(location);
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// call this after broadcasting so we do not increment
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// if we throw an exeption.
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incrementPendingBroadcastsLocked();
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}
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} catch (RemoteException e) {
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return false;
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}
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} else {
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Intent locationChanged = new Intent();
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locationChanged.putExtra(LocationManager.KEY_LOCATION_CHANGED, location);
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try {
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synchronized (this) {
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// synchronize to ensure incrementPendingBroadcastsLocked()
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// is called before decrementPendingBroadcasts()
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mPendingIntent.send(mContext, 0, locationChanged, this, mLocationHandler,
|
|
mPermission);
|
|
// call this after broadcasting so we do not increment
|
|
// if we throw an exeption.
|
|
incrementPendingBroadcastsLocked();
|
|
}
|
|
} catch (PendingIntent.CanceledException e) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
public boolean callProviderEnabledLocked(String provider, boolean enabled) {
|
|
if (mListener != null) {
|
|
try {
|
|
synchronized (this) {
|
|
// synchronize to ensure incrementPendingBroadcastsLocked()
|
|
// is called before decrementPendingBroadcasts()
|
|
if (enabled) {
|
|
mListener.onProviderEnabled(provider);
|
|
} else {
|
|
mListener.onProviderDisabled(provider);
|
|
}
|
|
// call this after broadcasting so we do not increment
|
|
// if we throw an exeption.
|
|
incrementPendingBroadcastsLocked();
|
|
}
|
|
} catch (RemoteException e) {
|
|
return false;
|
|
}
|
|
} else {
|
|
Intent providerIntent = new Intent();
|
|
providerIntent.putExtra(LocationManager.KEY_PROVIDER_ENABLED, enabled);
|
|
try {
|
|
synchronized (this) {
|
|
// synchronize to ensure incrementPendingBroadcastsLocked()
|
|
// is called before decrementPendingBroadcasts()
|
|
mPendingIntent.send(mContext, 0, providerIntent, this, mLocationHandler,
|
|
mPermission);
|
|
// call this after broadcasting so we do not increment
|
|
// if we throw an exeption.
|
|
incrementPendingBroadcastsLocked();
|
|
}
|
|
} catch (PendingIntent.CanceledException e) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
@Override
|
|
public void binderDied() {
|
|
if (D) Log.d(TAG, "Location listener died");
|
|
|
|
synchronized (mLock) {
|
|
removeUpdatesLocked(this);
|
|
}
|
|
synchronized (this) {
|
|
if (mPendingBroadcasts > 0) {
|
|
LocationManagerService.this.decrementPendingBroadcasts();
|
|
mPendingBroadcasts = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void onSendFinished(PendingIntent pendingIntent, Intent intent,
|
|
int resultCode, String resultData, Bundle resultExtras) {
|
|
synchronized (this) {
|
|
decrementPendingBroadcastsLocked();
|
|
}
|
|
}
|
|
|
|
// this must be called while synchronized by caller in a synchronized block
|
|
// containing the sending of the broadcaset
|
|
private void incrementPendingBroadcastsLocked() {
|
|
if (mPendingBroadcasts++ == 0) {
|
|
LocationManagerService.this.incrementPendingBroadcasts();
|
|
}
|
|
}
|
|
|
|
private void decrementPendingBroadcastsLocked() {
|
|
if (--mPendingBroadcasts == 0) {
|
|
LocationManagerService.this.decrementPendingBroadcasts();
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void locationCallbackFinished(ILocationListener listener) {
|
|
//Do not use getReceiver here as that will add the ILocationListener to
|
|
//the receiver list if it is not found. If it is not found then the
|
|
//LocationListener was removed when it had a pending broadcast and should
|
|
//not be added back.
|
|
IBinder binder = listener.asBinder();
|
|
Receiver receiver = mReceivers.get(binder);
|
|
if (receiver != null) {
|
|
synchronized (receiver) {
|
|
// so wakelock calls will succeed
|
|
long identity = Binder.clearCallingIdentity();
|
|
receiver.decrementPendingBroadcastsLocked();
|
|
Binder.restoreCallingIdentity(identity);
|
|
}
|
|
}
|
|
}
|
|
|
|
/** Settings Observer callback */
|
|
@Override
|
|
public void update(Observable o, Object arg) {
|
|
synchronized (mLock) {
|
|
updateProvidersLocked();
|
|
}
|
|
}
|
|
|
|
private void addProviderLocked(LocationProviderInterface provider) {
|
|
mProviders.add(provider);
|
|
mProvidersByName.put(provider.getName(), provider);
|
|
}
|
|
|
|
private void removeProviderLocked(LocationProviderInterface provider) {
|
|
provider.disable();
|
|
mProviders.remove(provider);
|
|
mProvidersByName.remove(provider.getName());
|
|
}
|
|
|
|
|
|
private boolean isAllowedBySettingsLocked(String provider) {
|
|
if (mEnabledProviders.contains(provider)) {
|
|
return true;
|
|
}
|
|
if (mDisabledProviders.contains(provider)) {
|
|
return false;
|
|
}
|
|
// Use system settings
|
|
ContentResolver resolver = mContext.getContentResolver();
|
|
|
|
return Settings.Secure.isLocationProviderEnabled(resolver, provider);
|
|
}
|
|
|
|
/**
|
|
* Throw SecurityException if caller has neither COARSE or FINE.
|
|
* Otherwise, return the best permission.
|
|
*/
|
|
private String checkPermission() {
|
|
if (mContext.checkCallingOrSelfPermission(ACCESS_FINE_LOCATION) ==
|
|
PackageManager.PERMISSION_GRANTED) {
|
|
return ACCESS_FINE_LOCATION;
|
|
} else if (mContext.checkCallingOrSelfPermission(ACCESS_COARSE_LOCATION) ==
|
|
PackageManager.PERMISSION_GRANTED) {
|
|
return ACCESS_COARSE_LOCATION;
|
|
}
|
|
|
|
throw new SecurityException("Location requires either ACCESS_COARSE_LOCATION or" +
|
|
"ACCESS_FINE_LOCATION permission");
|
|
}
|
|
|
|
/**
|
|
* Returns all providers by name, including passive, but excluding
|
|
* fused.
|
|
*/
|
|
@Override
|
|
public List<String> getAllProviders() {
|
|
checkPermission();
|
|
|
|
ArrayList<String> out;
|
|
synchronized (mLock) {
|
|
out = new ArrayList<String>(mProviders.size());
|
|
for (LocationProviderInterface provider : mProviders) {
|
|
String name = provider.getName();
|
|
if (LocationManager.FUSED_PROVIDER.equals(name)) {
|
|
continue;
|
|
}
|
|
out.add(name);
|
|
}
|
|
}
|
|
|
|
if (D) Log.d(TAG, "getAllProviders()=" + out);
|
|
return out;
|
|
}
|
|
|
|
/**
|
|
* Return all providers by name, that match criteria and are optionally
|
|
* enabled.
|
|
* Can return passive provider, but never returns fused provider.
|
|
*/
|
|
@Override
|
|
public List<String> getProviders(Criteria criteria, boolean enabledOnly) {
|
|
checkPermission();
|
|
|
|
ArrayList<String> out;
|
|
synchronized (mLock) {
|
|
out = new ArrayList<String>(mProviders.size());
|
|
for (LocationProviderInterface provider : mProviders) {
|
|
String name = provider.getName();
|
|
if (LocationManager.FUSED_PROVIDER.equals(name)) {
|
|
continue;
|
|
}
|
|
if (enabledOnly && !isAllowedBySettingsLocked(name)) {
|
|
continue;
|
|
}
|
|
if (criteria != null && !LocationProvider.propertiesMeetCriteria(
|
|
name, provider.getProperties(), criteria)) {
|
|
continue;
|
|
}
|
|
out.add(name);
|
|
}
|
|
}
|
|
|
|
if (D) Log.d(TAG, "getProviders()=" + out);
|
|
return out;
|
|
}
|
|
|
|
/**
|
|
* Return the name of the best provider given a Criteria object.
|
|
* This method has been deprecated from the public API,
|
|
* and the whole LoactionProvider (including #meetsCriteria)
|
|
* has been deprecated as well. So this method now uses
|
|
* some simplified logic.
|
|
*/
|
|
@Override
|
|
public String getBestProvider(Criteria criteria, boolean enabledOnly) {
|
|
String result = null;
|
|
checkPermission();
|
|
|
|
List<String> providers = getProviders(criteria, enabledOnly);
|
|
if (providers.size() < 1) {
|
|
result = pickBest(providers);
|
|
if (D) Log.d(TAG, "getBestProvider(" + criteria + ", " + enabledOnly + ")=" + result);
|
|
return result;
|
|
}
|
|
providers = getProviders(null, enabledOnly);
|
|
if (providers.size() >= 1) {
|
|
result = pickBest(providers);
|
|
if (D) Log.d(TAG, "getBestProvider(" + criteria + ", " + enabledOnly + ")=" + result);
|
|
return result;
|
|
}
|
|
|
|
if (D) Log.d(TAG, "getBestProvider(" + criteria + ", " + enabledOnly + ")=" + result);
|
|
return null;
|
|
}
|
|
|
|
private String pickBest(List<String> providers) {
|
|
if (providers.contains(LocationManager.NETWORK_PROVIDER)) {
|
|
return LocationManager.NETWORK_PROVIDER;
|
|
} else if (providers.contains(LocationManager.GPS_PROVIDER)) {
|
|
return LocationManager.GPS_PROVIDER;
|
|
} else {
|
|
return providers.get(0);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public boolean providerMeetsCriteria(String provider, Criteria criteria) {
|
|
checkPermission();
|
|
|
|
LocationProviderInterface p = mProvidersByName.get(provider);
|
|
if (p == null) {
|
|
throw new IllegalArgumentException("provider=" + provider);
|
|
}
|
|
|
|
boolean result = LocationProvider.propertiesMeetCriteria(
|
|
p.getName(), p.getProperties(), criteria);
|
|
if (D) Log.d(TAG, "providerMeetsCriteria(" + provider + ", " + criteria + ")=" + result);
|
|
return result;
|
|
}
|
|
|
|
private void updateProvidersLocked() {
|
|
boolean changesMade = false;
|
|
for (int i = mProviders.size() - 1; i >= 0; i--) {
|
|
LocationProviderInterface p = mProviders.get(i);
|
|
boolean isEnabled = p.isEnabled();
|
|
String name = p.getName();
|
|
boolean shouldBeEnabled = isAllowedBySettingsLocked(name);
|
|
if (isEnabled && !shouldBeEnabled) {
|
|
updateProviderListenersLocked(name, false);
|
|
changesMade = true;
|
|
} else if (!isEnabled && shouldBeEnabled) {
|
|
updateProviderListenersLocked(name, true);
|
|
changesMade = true;
|
|
}
|
|
}
|
|
if (changesMade) {
|
|
mContext.sendBroadcast(new Intent(LocationManager.PROVIDERS_CHANGED_ACTION));
|
|
}
|
|
}
|
|
|
|
private void updateProviderListenersLocked(String provider, boolean enabled) {
|
|
int listeners = 0;
|
|
|
|
LocationProviderInterface p = mProvidersByName.get(provider);
|
|
if (p == null) return;
|
|
|
|
ArrayList<Receiver> deadReceivers = null;
|
|
|
|
ArrayList<UpdateRecord> records = mRecordsByProvider.get(provider);
|
|
if (records != null) {
|
|
final int N = records.size();
|
|
for (int i = 0; i < N; i++) {
|
|
UpdateRecord record = records.get(i);
|
|
// Sends a notification message to the receiver
|
|
if (!record.mReceiver.callProviderEnabledLocked(provider, enabled)) {
|
|
if (deadReceivers == null) {
|
|
deadReceivers = new ArrayList<Receiver>();
|
|
}
|
|
deadReceivers.add(record.mReceiver);
|
|
}
|
|
listeners++;
|
|
}
|
|
}
|
|
|
|
if (deadReceivers != null) {
|
|
for (int i = deadReceivers.size() - 1; i >= 0; i--) {
|
|
removeUpdatesLocked(deadReceivers.get(i));
|
|
}
|
|
}
|
|
|
|
if (enabled) {
|
|
p.enable();
|
|
if (listeners > 0) {
|
|
applyRequirementsLocked(provider);
|
|
}
|
|
} else {
|
|
p.disable();
|
|
}
|
|
}
|
|
|
|
private void applyRequirementsLocked(String provider) {
|
|
LocationProviderInterface p = mProvidersByName.get(provider);
|
|
if (p == null) return;
|
|
|
|
ArrayList<UpdateRecord> records = mRecordsByProvider.get(provider);
|
|
WorkSource worksource = new WorkSource();
|
|
ProviderRequest providerRequest = new ProviderRequest();
|
|
|
|
if (records != null) {
|
|
for (UpdateRecord record : records) {
|
|
LocationRequest locationRequest = record.mRequest;
|
|
|
|
if (providerRequest.locationRequests == null) {
|
|
providerRequest.locationRequests = new ArrayList<LocationRequest>();
|
|
}
|
|
|
|
providerRequest.locationRequests.add(locationRequest);
|
|
if (locationRequest.getInterval() < providerRequest.interval) {
|
|
providerRequest.reportLocation = true;
|
|
providerRequest.interval = locationRequest.getInterval();
|
|
}
|
|
}
|
|
|
|
if (providerRequest.reportLocation) {
|
|
// calculate who to blame for power
|
|
// This is somewhat arbitrary. We pick a threshold interval
|
|
// that is slightly higher that the minimum interval, and
|
|
// spread the blame across all applications with a request
|
|
// under that threshold.
|
|
long thresholdInterval = (providerRequest.interval + 1000) * 3 / 2;
|
|
for (UpdateRecord record : records) {
|
|
LocationRequest locationRequest = record.mRequest;
|
|
if (locationRequest.getInterval() <= thresholdInterval) {
|
|
worksource.add(record.mReceiver.mUid);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (D) Log.d(TAG, "provider request: " + provider + " " + providerRequest);
|
|
p.setRequest(providerRequest, worksource);
|
|
}
|
|
|
|
private class UpdateRecord {
|
|
final String mProvider;
|
|
final LocationRequest mRequest;
|
|
final Receiver mReceiver;
|
|
Location mLastFixBroadcast;
|
|
long mLastStatusBroadcast;
|
|
|
|
/**
|
|
* Note: must be constructed with lock held.
|
|
*/
|
|
UpdateRecord(String provider, LocationRequest request, Receiver receiver) {
|
|
mProvider = provider;
|
|
mRequest = request;
|
|
mReceiver = receiver;
|
|
|
|
ArrayList<UpdateRecord> records = mRecordsByProvider.get(provider);
|
|
if (records == null) {
|
|
records = new ArrayList<UpdateRecord>();
|
|
mRecordsByProvider.put(provider, records);
|
|
}
|
|
if (!records.contains(this)) {
|
|
records.add(this);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Method to be called when a record will no longer be used. Calling this multiple times
|
|
* must have the same effect as calling it once.
|
|
*/
|
|
void disposeLocked(boolean removeReceiver) {
|
|
// remove from mRecordsByProvider
|
|
ArrayList<UpdateRecord> globalRecords = mRecordsByProvider.get(this.mProvider);
|
|
if (globalRecords != null) {
|
|
globalRecords.remove(this);
|
|
}
|
|
|
|
if (!removeReceiver) return; // the caller will handle the rest
|
|
|
|
// remove from Receiver#mUpdateRecords
|
|
HashMap<String, UpdateRecord> receiverRecords = mReceiver.mUpdateRecords;
|
|
if (receiverRecords != null) {
|
|
receiverRecords.remove(this.mProvider);
|
|
|
|
// and also remove the Receiver if it has no more update records
|
|
if (removeReceiver && receiverRecords.size() == 0) {
|
|
removeUpdatesLocked(mReceiver);
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public String toString() {
|
|
StringBuilder s = new StringBuilder();
|
|
s.append("UpdateRecord[");
|
|
s.append(mProvider);
|
|
s.append(' ').append(mReceiver.mPackageName).append('(');
|
|
s.append(mReceiver.mUid).append(')');
|
|
s.append(' ').append(mRequest);
|
|
s.append(']');
|
|
return s.toString();
|
|
}
|
|
}
|
|
|
|
private Receiver getReceiver(ILocationListener listener, int pid, int uid, String packageName) {
|
|
IBinder binder = listener.asBinder();
|
|
Receiver receiver = mReceivers.get(binder);
|
|
if (receiver == null) {
|
|
receiver = new Receiver(listener, null, pid, uid, packageName);
|
|
mReceivers.put(binder, receiver);
|
|
|
|
try {
|
|
receiver.getListener().asBinder().linkToDeath(receiver, 0);
|
|
} catch (RemoteException e) {
|
|
Slog.e(TAG, "linkToDeath failed:", e);
|
|
return null;
|
|
}
|
|
}
|
|
return receiver;
|
|
}
|
|
|
|
private Receiver getReceiver(PendingIntent intent, int pid, int uid, String packageName) {
|
|
Receiver receiver = mReceivers.get(intent);
|
|
if (receiver == null) {
|
|
receiver = new Receiver(null, intent, pid, uid, packageName);
|
|
mReceivers.put(intent, receiver);
|
|
}
|
|
return receiver;
|
|
}
|
|
|
|
private String checkPermissionAndRequest(LocationRequest request) {
|
|
String perm = checkPermission();
|
|
|
|
if (ACCESS_COARSE_LOCATION.equals(perm)) {
|
|
request.applyCoarsePermissionRestrictions();
|
|
}
|
|
return perm;
|
|
}
|
|
|
|
private void checkPackageName(String packageName) {
|
|
if (packageName == null) {
|
|
throw new SecurityException("invalid package name: " + packageName);
|
|
}
|
|
int uid = Binder.getCallingUid();
|
|
String[] packages = mPackageManager.getPackagesForUid(uid);
|
|
if (packages == null) {
|
|
throw new SecurityException("invalid UID " + uid);
|
|
}
|
|
for (String pkg : packages) {
|
|
if (packageName.equals(pkg)) return;
|
|
}
|
|
throw new SecurityException("invalid package name: " + packageName);
|
|
}
|
|
|
|
private void checkPendingIntent(PendingIntent intent) {
|
|
if (intent == null) {
|
|
throw new IllegalArgumentException("invalid pending intent: " + intent);
|
|
}
|
|
}
|
|
|
|
private Receiver checkListenerOrIntent(ILocationListener listener, PendingIntent intent,
|
|
int pid, int uid, String packageName) {
|
|
if (intent == null && listener == null) {
|
|
throw new IllegalArgumentException("need eiter listener or intent");
|
|
} else if (intent != null && listener != null) {
|
|
throw new IllegalArgumentException("cannot register both listener and intent");
|
|
} else if (intent != null) {
|
|
checkPendingIntent(intent);
|
|
return getReceiver(intent, pid, uid, packageName);
|
|
} else {
|
|
return getReceiver(listener, pid, uid, packageName);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void requestLocationUpdates(LocationRequest request, ILocationListener listener,
|
|
PendingIntent intent, String packageName) {
|
|
if (request == null) request = DEFAULT_LOCATION_REQUEST;
|
|
checkPackageName(packageName);
|
|
checkPermissionAndRequest(request);
|
|
|
|
final int pid = Binder.getCallingPid();
|
|
final int uid = Binder.getCallingUid();
|
|
Receiver recevier = checkListenerOrIntent(listener, intent, pid, uid, packageName);
|
|
|
|
// so wakelock calls will succeed (not totally sure this is still needed)
|
|
long identity = Binder.clearCallingIdentity();
|
|
try {
|
|
synchronized (mLock) {
|
|
requestLocationUpdatesLocked(request, recevier, pid, uid, packageName);
|
|
}
|
|
} finally {
|
|
Binder.restoreCallingIdentity(identity);
|
|
}
|
|
}
|
|
|
|
private void requestLocationUpdatesLocked(LocationRequest request, Receiver receiver,
|
|
int pid, int uid, String packageName) {
|
|
// Figure out the provider. Either its explicitly request (legacy use cases), or
|
|
// use the fused provider
|
|
if (request == null) request = DEFAULT_LOCATION_REQUEST;
|
|
String name = request.getProvider();
|
|
if (name == null) name = LocationManager.FUSED_PROVIDER;
|
|
LocationProviderInterface provider = mProvidersByName.get(name);
|
|
if (provider == null) {
|
|
throw new IllegalArgumentException("provider doesn't exisit: " + provider);
|
|
}
|
|
|
|
Log.i(TAG, "request " + Integer.toHexString(System.identityHashCode(receiver)) + " " +
|
|
name + " " + request + " from " + packageName + "(" + uid + ")");
|
|
|
|
UpdateRecord record = new UpdateRecord(name, request, receiver);
|
|
UpdateRecord oldRecord = receiver.mUpdateRecords.put(name, record);
|
|
if (oldRecord != null) {
|
|
oldRecord.disposeLocked(false);
|
|
}
|
|
|
|
boolean isProviderEnabled = isAllowedBySettingsLocked(name);
|
|
if (isProviderEnabled) {
|
|
applyRequirementsLocked(name);
|
|
} else {
|
|
// Notify the listener that updates are currently disabled
|
|
receiver.callProviderEnabledLocked(name, false);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void removeUpdates(ILocationListener listener, PendingIntent intent,
|
|
String packageName) {
|
|
checkPackageName(packageName);
|
|
checkPermission();
|
|
final int pid = Binder.getCallingPid();
|
|
final int uid = Binder.getCallingUid();
|
|
Receiver receiver = checkListenerOrIntent(listener, intent, pid, uid, packageName);
|
|
|
|
// so wakelock calls will succeed (not totally sure this is still needed)
|
|
long identity = Binder.clearCallingIdentity();
|
|
try {
|
|
synchronized (mLock) {
|
|
removeUpdatesLocked(receiver);
|
|
}
|
|
} finally {
|
|
Binder.restoreCallingIdentity(identity);
|
|
}
|
|
}
|
|
|
|
private void removeUpdatesLocked(Receiver receiver) {
|
|
Log.i(TAG, "remove " + Integer.toHexString(System.identityHashCode(receiver)));
|
|
|
|
if (mReceivers.remove(receiver.mKey) != null && receiver.isListener()) {
|
|
receiver.getListener().asBinder().unlinkToDeath(receiver, 0);
|
|
synchronized (receiver) {
|
|
if (receiver.mPendingBroadcasts > 0) {
|
|
decrementPendingBroadcasts();
|
|
receiver.mPendingBroadcasts = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Record which providers were associated with this listener
|
|
HashSet<String> providers = new HashSet<String>();
|
|
HashMap<String, UpdateRecord> oldRecords = receiver.mUpdateRecords;
|
|
if (oldRecords != null) {
|
|
// Call dispose() on the obsolete update records.
|
|
for (UpdateRecord record : oldRecords.values()) {
|
|
record.disposeLocked(false);
|
|
}
|
|
// Accumulate providers
|
|
providers.addAll(oldRecords.keySet());
|
|
}
|
|
|
|
// update provider
|
|
for (String provider : providers) {
|
|
// If provider is already disabled, don't need to do anything
|
|
if (!isAllowedBySettingsLocked(provider)) {
|
|
continue;
|
|
}
|
|
|
|
applyRequirementsLocked(provider);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public Location getLastLocation(LocationRequest request) {
|
|
if (D) Log.d(TAG, "getLastLocation: " + request);
|
|
if (request == null) request = DEFAULT_LOCATION_REQUEST;
|
|
String perm = checkPermissionAndRequest(request);
|
|
|
|
synchronized (mLock) {
|
|
// Figure out the provider. Either its explicitly request (deprecated API's),
|
|
// or use the fused provider
|
|
String name = request.getProvider();
|
|
if (name == null) name = LocationManager.FUSED_PROVIDER;
|
|
LocationProviderInterface provider = mProvidersByName.get(name);
|
|
if (provider == null) return null;
|
|
|
|
if (!isAllowedBySettingsLocked(name)) return null;
|
|
|
|
Location location = mLastLocation.get(name);
|
|
if (ACCESS_FINE_LOCATION.equals(perm)) {
|
|
return location;
|
|
} else {
|
|
return getCoarseLocationExtra(location);
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void requestGeofence(LocationRequest request, Geofence geofence, PendingIntent intent,
|
|
String packageName) {
|
|
if (request == null) request = DEFAULT_LOCATION_REQUEST;
|
|
checkPermissionAndRequest(request);
|
|
checkPendingIntent(intent);
|
|
checkPackageName(packageName);
|
|
|
|
if (D) Log.d(TAG, "requestGeofence: " + request + " " + geofence + " " + intent);
|
|
|
|
mGeofenceManager.addFence(request, geofence, intent, Binder.getCallingUid(), packageName);
|
|
}
|
|
|
|
@Override
|
|
public void removeGeofence(Geofence geofence, PendingIntent intent, String packageName) {
|
|
checkPermission();
|
|
checkPendingIntent(intent);
|
|
checkPackageName(packageName);
|
|
|
|
if (D) Log.d(TAG, "removeGeofence: " + geofence + " " + intent);
|
|
|
|
mGeofenceManager.removeFence(geofence, intent);
|
|
}
|
|
|
|
|
|
@Override
|
|
public boolean addGpsStatusListener(IGpsStatusListener listener) {
|
|
if (mGpsStatusProvider == null) {
|
|
return false;
|
|
}
|
|
if (mContext.checkCallingOrSelfPermission(ACCESS_FINE_LOCATION) !=
|
|
PackageManager.PERMISSION_GRANTED) {
|
|
throw new SecurityException("Requires ACCESS_FINE_LOCATION permission");
|
|
}
|
|
|
|
try {
|
|
mGpsStatusProvider.addGpsStatusListener(listener);
|
|
} catch (RemoteException e) {
|
|
Slog.e(TAG, "mGpsStatusProvider.addGpsStatusListener failed", e);
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
@Override
|
|
public void removeGpsStatusListener(IGpsStatusListener listener) {
|
|
synchronized (mLock) {
|
|
try {
|
|
mGpsStatusProvider.removeGpsStatusListener(listener);
|
|
} catch (Exception e) {
|
|
Slog.e(TAG, "mGpsStatusProvider.removeGpsStatusListener failed", e);
|
|
}
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public boolean sendExtraCommand(String provider, String command, Bundle extras) {
|
|
if (provider == null) {
|
|
// throw NullPointerException to remain compatible with previous implementation
|
|
throw new NullPointerException();
|
|
}
|
|
|
|
checkPermission();
|
|
// and check for ACCESS_LOCATION_EXTRA_COMMANDS
|
|
if ((mContext.checkCallingOrSelfPermission(ACCESS_LOCATION_EXTRA_COMMANDS)
|
|
!= PackageManager.PERMISSION_GRANTED)) {
|
|
throw new SecurityException("Requires ACCESS_LOCATION_EXTRA_COMMANDS permission");
|
|
}
|
|
|
|
synchronized (mLock) {
|
|
LocationProviderInterface p = mProvidersByName.get(provider);
|
|
if (p == null) return false;
|
|
|
|
return p.sendExtraCommand(command, extras);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public boolean sendNiResponse(int notifId, int userResponse) {
|
|
if (Binder.getCallingUid() != Process.myUid()) {
|
|
throw new SecurityException(
|
|
"calling sendNiResponse from outside of the system is not allowed");
|
|
}
|
|
try {
|
|
return mNetInitiatedListener.sendNiResponse(notifId, userResponse);
|
|
} catch (RemoteException e) {
|
|
Slog.e(TAG, "RemoteException in LocationManagerService.sendNiResponse");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return null if the provider does not exist
|
|
* @throws SecurityException if the provider is not allowed to be
|
|
* accessed by the caller
|
|
*/
|
|
@Override
|
|
public ProviderProperties getProviderProperties(String provider) {
|
|
checkPermission();
|
|
|
|
LocationProviderInterface p;
|
|
synchronized (mLock) {
|
|
p = mProvidersByName.get(provider);
|
|
}
|
|
|
|
if (p == null) return null;
|
|
return p.getProperties();
|
|
}
|
|
|
|
@Override
|
|
public boolean isProviderEnabled(String provider) {
|
|
checkPermission();
|
|
if (LocationManager.FUSED_PROVIDER.equals(provider)) return false;
|
|
|
|
synchronized (mLock) {
|
|
LocationProviderInterface p = mProvidersByName.get(provider);
|
|
if (p == null) return false;
|
|
|
|
return isAllowedBySettingsLocked(provider);
|
|
}
|
|
}
|
|
|
|
private void checkCallerIsProvider() {
|
|
if (mContext.checkCallingOrSelfPermission(INSTALL_LOCATION_PROVIDER)
|
|
== PackageManager.PERMISSION_GRANTED) {
|
|
return;
|
|
}
|
|
|
|
// Previously we only used the INSTALL_LOCATION_PROVIDER
|
|
// check. But that is system or signature
|
|
// protection level which is not flexible enough for
|
|
// providers installed oustide the system image. So
|
|
// also allow providers with a UID matching the
|
|
// currently bound package name
|
|
|
|
int uid = Binder.getCallingUid();
|
|
|
|
if (mGeocodeProvider != null) {
|
|
if (doesPackageHaveUid(uid, mGeocodeProvider.getConnectedPackageName())) return;
|
|
}
|
|
for (LocationProviderProxy proxy : mProxyProviders) {
|
|
if (doesPackageHaveUid(uid, proxy.getConnectedPackageName())) return;
|
|
}
|
|
throw new SecurityException("need INSTALL_LOCATION_PROVIDER permission, " +
|
|
"or UID of a currently bound location provider");
|
|
}
|
|
|
|
private boolean doesPackageHaveUid(int uid, String packageName) {
|
|
if (packageName == null) {
|
|
return false;
|
|
}
|
|
try {
|
|
ApplicationInfo appInfo = mPackageManager.getApplicationInfo(packageName, 0);
|
|
if (appInfo.uid != uid) {
|
|
return false;
|
|
}
|
|
} catch (NameNotFoundException e) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
@Override
|
|
public void reportLocation(Location location, boolean passive) {
|
|
checkCallerIsProvider();
|
|
|
|
if (!location.isComplete()) {
|
|
Log.w(TAG, "Dropping incomplete location: " + location);
|
|
return;
|
|
}
|
|
|
|
mLocationHandler.removeMessages(MSG_LOCATION_CHANGED, location);
|
|
Message m = Message.obtain(mLocationHandler, MSG_LOCATION_CHANGED, location);
|
|
m.arg1 = (passive ? 1 : 0);
|
|
mLocationHandler.sendMessageAtFrontOfQueue(m);
|
|
}
|
|
|
|
|
|
private static boolean shouldBroadcastSafe(Location loc, Location lastLoc, UpdateRecord record) {
|
|
// Always broadcast the first update
|
|
if (lastLoc == null) {
|
|
return true;
|
|
}
|
|
|
|
// Check whether sufficient time has passed
|
|
long minTime = record.mRequest.getFastestInterval();
|
|
long delta = (loc.getElapsedRealtimeNano() - lastLoc.getElapsedRealtimeNano()) / 1000000L;
|
|
if (delta < minTime - MAX_PROVIDER_SCHEDULING_JITTER_MS) {
|
|
return false;
|
|
}
|
|
|
|
// Check whether sufficient distance has been traveled
|
|
double minDistance = record.mRequest.getSmallestDisplacement();
|
|
if (minDistance > 0.0) {
|
|
if (loc.distanceTo(lastLoc) <= minDistance) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
private void handleLocationChangedLocked(Location location, boolean passive) {
|
|
long now = SystemClock.elapsedRealtime();
|
|
String provider = (passive ? LocationManager.PASSIVE_PROVIDER : location.getProvider());
|
|
ArrayList<UpdateRecord> records = mRecordsByProvider.get(provider);
|
|
if (records == null || records.size() == 0) return;
|
|
|
|
LocationProviderInterface p = mProvidersByName.get(provider);
|
|
if (p == null) return;
|
|
|
|
// Add the coarse location as an extra, if not already present
|
|
Location coarse = getCoarseLocationExtra(location);
|
|
if (coarse == null) {
|
|
coarse = addCoarseLocationExtra(location);
|
|
}
|
|
|
|
// Update last known locations
|
|
Location lastLocation = mLastLocation.get(provider);
|
|
if (lastLocation == null) {
|
|
lastLocation = new Location(provider);
|
|
mLastLocation.put(provider, lastLocation);
|
|
}
|
|
lastLocation.set(location);
|
|
|
|
// Fetch latest status update time
|
|
long newStatusUpdateTime = p.getStatusUpdateTime();
|
|
|
|
// Get latest status
|
|
Bundle extras = new Bundle();
|
|
int status = p.getStatus(extras);
|
|
|
|
ArrayList<Receiver> deadReceivers = null;
|
|
ArrayList<UpdateRecord> deadUpdateRecords = null;
|
|
|
|
// Broadcast location or status to all listeners
|
|
for (UpdateRecord r : records) {
|
|
Receiver receiver = r.mReceiver;
|
|
boolean receiverDead = false;
|
|
if (ACCESS_FINE_LOCATION.equals(receiver.mPermission)) {
|
|
location = lastLocation; // use fine location
|
|
} else {
|
|
location = coarse; // use coarse location
|
|
}
|
|
|
|
Location lastLoc = r.mLastFixBroadcast;
|
|
if ((lastLoc == null) || shouldBroadcastSafe(location, lastLoc, r)) {
|
|
if (lastLoc == null) {
|
|
lastLoc = new Location(location);
|
|
r.mLastFixBroadcast = lastLoc;
|
|
} else {
|
|
lastLoc.set(location);
|
|
}
|
|
if (!receiver.callLocationChangedLocked(location)) {
|
|
Slog.w(TAG, "RemoteException calling onLocationChanged on " + receiver);
|
|
receiverDead = true;
|
|
}
|
|
}
|
|
|
|
long prevStatusUpdateTime = r.mLastStatusBroadcast;
|
|
if ((newStatusUpdateTime > prevStatusUpdateTime) &&
|
|
(prevStatusUpdateTime != 0 || status != LocationProvider.AVAILABLE)) {
|
|
|
|
r.mLastStatusBroadcast = newStatusUpdateTime;
|
|
if (!receiver.callStatusChangedLocked(provider, status, extras)) {
|
|
receiverDead = true;
|
|
Slog.w(TAG, "RemoteException calling onStatusChanged on " + receiver);
|
|
}
|
|
}
|
|
|
|
// track expired records
|
|
if (r.mRequest.getNumUpdates() == 0 || r.mRequest.getExpireAt() < now) {
|
|
if (deadUpdateRecords == null) {
|
|
deadUpdateRecords = new ArrayList<UpdateRecord>();
|
|
}
|
|
deadUpdateRecords.add(r);
|
|
}
|
|
// track dead receivers
|
|
if (receiverDead) {
|
|
if (deadReceivers == null) {
|
|
deadReceivers = new ArrayList<Receiver>();
|
|
}
|
|
if (!deadReceivers.contains(receiver)) {
|
|
deadReceivers.add(receiver);
|
|
}
|
|
}
|
|
}
|
|
|
|
// remove dead records and receivers outside the loop
|
|
if (deadReceivers != null) {
|
|
for (Receiver receiver : deadReceivers) {
|
|
removeUpdatesLocked(receiver);
|
|
}
|
|
}
|
|
if (deadUpdateRecords != null) {
|
|
for (UpdateRecord r : deadUpdateRecords) {
|
|
r.disposeLocked(true);
|
|
}
|
|
}
|
|
}
|
|
|
|
private class LocationWorkerHandler extends Handler {
|
|
@Override
|
|
public void handleMessage(Message msg) {
|
|
switch (msg.what) {
|
|
case MSG_LOCATION_CHANGED:
|
|
handleLocationChanged((Location) msg.obj, msg.arg1 == 1);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
private void handleLocationChanged(Location location, boolean passive) {
|
|
String provider = location.getProvider();
|
|
|
|
if (!passive) {
|
|
// notify passive provider of the new location
|
|
mPassiveProvider.updateLocation(location);
|
|
}
|
|
|
|
synchronized (mLock) {
|
|
if (isAllowedBySettingsLocked(provider)) {
|
|
handleLocationChangedLocked(location, passive);
|
|
}
|
|
}
|
|
}
|
|
|
|
private final PackageMonitor mPackageMonitor = new PackageMonitor() {
|
|
@Override
|
|
public void onPackageDisappeared(String packageName, int reason) {
|
|
// remove all receivers associated with this package name
|
|
synchronized (mLock) {
|
|
ArrayList<Receiver> deadReceivers = null;
|
|
|
|
for (Receiver receiver : mReceivers.values()) {
|
|
if (receiver.mPackageName.equals(packageName)) {
|
|
if (deadReceivers == null) {
|
|
deadReceivers = new ArrayList<Receiver>();
|
|
}
|
|
deadReceivers.add(receiver);
|
|
}
|
|
}
|
|
|
|
// perform removal outside of mReceivers loop
|
|
if (deadReceivers != null) {
|
|
for (Receiver receiver : deadReceivers) {
|
|
removeUpdatesLocked(receiver);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
// Wake locks
|
|
|
|
private void incrementPendingBroadcasts() {
|
|
synchronized (mWakeLock) {
|
|
if (mPendingBroadcasts++ == 0) {
|
|
try {
|
|
mWakeLock.acquire();
|
|
log("Acquired wakelock");
|
|
} catch (Exception e) {
|
|
// This is to catch a runtime exception thrown when we try to release an
|
|
// already released lock.
|
|
Slog.e(TAG, "exception in acquireWakeLock()", e);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private void decrementPendingBroadcasts() {
|
|
synchronized (mWakeLock) {
|
|
if (--mPendingBroadcasts == 0) {
|
|
try {
|
|
// Release wake lock
|
|
if (mWakeLock.isHeld()) {
|
|
mWakeLock.release();
|
|
log("Released wakelock");
|
|
} else {
|
|
log("Can't release wakelock again!");
|
|
}
|
|
} catch (Exception e) {
|
|
// This is to catch a runtime exception thrown when we try to release an
|
|
// already released lock.
|
|
Slog.e(TAG, "exception in releaseWakeLock()", e);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Geocoder
|
|
|
|
@Override
|
|
public boolean geocoderIsPresent() {
|
|
return mGeocodeProvider != null;
|
|
}
|
|
|
|
@Override
|
|
public String getFromLocation(double latitude, double longitude, int maxResults,
|
|
GeocoderParams params, List<Address> addrs) {
|
|
if (mGeocodeProvider != null) {
|
|
return mGeocodeProvider.getFromLocation(latitude, longitude, maxResults,
|
|
params, addrs);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
|
|
@Override
|
|
public String getFromLocationName(String locationName,
|
|
double lowerLeftLatitude, double lowerLeftLongitude,
|
|
double upperRightLatitude, double upperRightLongitude, int maxResults,
|
|
GeocoderParams params, List<Address> addrs) {
|
|
|
|
if (mGeocodeProvider != null) {
|
|
return mGeocodeProvider.getFromLocationName(locationName, lowerLeftLatitude,
|
|
lowerLeftLongitude, upperRightLatitude, upperRightLongitude,
|
|
maxResults, params, addrs);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
// Mock Providers
|
|
|
|
private void checkMockPermissionsSafe() {
|
|
boolean allowMocks = Settings.Secure.getInt(mContext.getContentResolver(),
|
|
Settings.Secure.ALLOW_MOCK_LOCATION, 0) == 1;
|
|
if (!allowMocks) {
|
|
throw new SecurityException("Requires ACCESS_MOCK_LOCATION secure setting");
|
|
}
|
|
|
|
if (mContext.checkCallingPermission(ACCESS_MOCK_LOCATION) !=
|
|
PackageManager.PERMISSION_GRANTED) {
|
|
throw new SecurityException("Requires ACCESS_MOCK_LOCATION permission");
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void addTestProvider(String name, ProviderProperties properties) {
|
|
checkMockPermissionsSafe();
|
|
|
|
if (LocationManager.PASSIVE_PROVIDER.equals(name)) {
|
|
throw new IllegalArgumentException("Cannot mock the passive location provider");
|
|
}
|
|
|
|
long identity = Binder.clearCallingIdentity();
|
|
synchronized (mLock) {
|
|
MockProvider provider = new MockProvider(name, this, properties);
|
|
// remove the real provider if we are replacing GPS or network provider
|
|
if (LocationManager.GPS_PROVIDER.equals(name)
|
|
|| LocationManager.NETWORK_PROVIDER.equals(name)) {
|
|
LocationProviderInterface p = mProvidersByName.get(name);
|
|
if (p != null) {
|
|
removeProviderLocked(p);
|
|
}
|
|
}
|
|
if (mProvidersByName.get(name) != null) {
|
|
throw new IllegalArgumentException("Provider \"" + name + "\" already exists");
|
|
}
|
|
addProviderLocked(provider);
|
|
mMockProviders.put(name, provider);
|
|
mLastLocation.put(name, null);
|
|
updateProvidersLocked();
|
|
}
|
|
Binder.restoreCallingIdentity(identity);
|
|
}
|
|
|
|
@Override
|
|
public void removeTestProvider(String provider) {
|
|
checkMockPermissionsSafe();
|
|
synchronized (mLock) {
|
|
MockProvider mockProvider = mMockProviders.get(provider);
|
|
if (mockProvider == null) {
|
|
throw new IllegalArgumentException("Provider \"" + provider + "\" unknown");
|
|
}
|
|
long identity = Binder.clearCallingIdentity();
|
|
removeProviderLocked(mProvidersByName.get(provider));
|
|
mMockProviders.remove(mockProvider);
|
|
|
|
// reinstate real provider if available
|
|
LocationProviderInterface realProvider = mRealProviders.get(provider);
|
|
if (realProvider != null) {
|
|
addProviderLocked(realProvider);
|
|
}
|
|
mLastLocation.put(provider, null);
|
|
updateProvidersLocked();
|
|
Binder.restoreCallingIdentity(identity);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void setTestProviderLocation(String provider, Location loc) {
|
|
checkMockPermissionsSafe();
|
|
synchronized (mLock) {
|
|
MockProvider mockProvider = mMockProviders.get(provider);
|
|
if (mockProvider == null) {
|
|
throw new IllegalArgumentException("Provider \"" + provider + "\" unknown");
|
|
}
|
|
// clear calling identity so INSTALL_LOCATION_PROVIDER permission is not required
|
|
long identity = Binder.clearCallingIdentity();
|
|
mockProvider.setLocation(loc);
|
|
Binder.restoreCallingIdentity(identity);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void clearTestProviderLocation(String provider) {
|
|
checkMockPermissionsSafe();
|
|
synchronized (mLock) {
|
|
MockProvider mockProvider = mMockProviders.get(provider);
|
|
if (mockProvider == null) {
|
|
throw new IllegalArgumentException("Provider \"" + provider + "\" unknown");
|
|
}
|
|
mockProvider.clearLocation();
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void setTestProviderEnabled(String provider, boolean enabled) {
|
|
checkMockPermissionsSafe();
|
|
synchronized (mLock) {
|
|
MockProvider mockProvider = mMockProviders.get(provider);
|
|
if (mockProvider == null) {
|
|
throw new IllegalArgumentException("Provider \"" + provider + "\" unknown");
|
|
}
|
|
long identity = Binder.clearCallingIdentity();
|
|
if (enabled) {
|
|
mockProvider.enable();
|
|
mEnabledProviders.add(provider);
|
|
mDisabledProviders.remove(provider);
|
|
} else {
|
|
mockProvider.disable();
|
|
mEnabledProviders.remove(provider);
|
|
mDisabledProviders.add(provider);
|
|
}
|
|
updateProvidersLocked();
|
|
Binder.restoreCallingIdentity(identity);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void clearTestProviderEnabled(String provider) {
|
|
checkMockPermissionsSafe();
|
|
synchronized (mLock) {
|
|
MockProvider mockProvider = mMockProviders.get(provider);
|
|
if (mockProvider == null) {
|
|
throw new IllegalArgumentException("Provider \"" + provider + "\" unknown");
|
|
}
|
|
long identity = Binder.clearCallingIdentity();
|
|
mEnabledProviders.remove(provider);
|
|
mDisabledProviders.remove(provider);
|
|
updateProvidersLocked();
|
|
Binder.restoreCallingIdentity(identity);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void setTestProviderStatus(String provider, int status, Bundle extras, long updateTime) {
|
|
checkMockPermissionsSafe();
|
|
synchronized (mLock) {
|
|
MockProvider mockProvider = mMockProviders.get(provider);
|
|
if (mockProvider == null) {
|
|
throw new IllegalArgumentException("Provider \"" + provider + "\" unknown");
|
|
}
|
|
mockProvider.setStatus(status, extras, updateTime);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void clearTestProviderStatus(String provider) {
|
|
checkMockPermissionsSafe();
|
|
synchronized (mLock) {
|
|
MockProvider mockProvider = mMockProviders.get(provider);
|
|
if (mockProvider == null) {
|
|
throw new IllegalArgumentException("Provider \"" + provider + "\" unknown");
|
|
}
|
|
mockProvider.clearStatus();
|
|
}
|
|
}
|
|
|
|
private static double wrapLatitude(double lat) {
|
|
if (lat > MAX_LATITUDE) lat = MAX_LATITUDE;
|
|
if (lat < -MAX_LATITUDE) lat = -MAX_LATITUDE;
|
|
return lat;
|
|
}
|
|
|
|
private static double wrapLongitude(double lon) {
|
|
if (lon >= 180.0) lon -= 360.0;
|
|
if (lon < -180.0) lon += 360.0;
|
|
return lon;
|
|
}
|
|
|
|
private static double distanceToDegreesLatitude(double distance) {
|
|
return distance / APPROXIMATE_METERS_PER_DEGREE_AT_EQUATOR;
|
|
}
|
|
|
|
/**
|
|
* Requires latitude since longitudinal distances change with distance from equator.
|
|
*/
|
|
private static double distanceToDegreesLongitude(double distance, double lat) {
|
|
return distance / APPROXIMATE_METERS_PER_DEGREE_AT_EQUATOR / Math.cos(lat);
|
|
}
|
|
|
|
/**
|
|
* Fudge a location into a coarse location.
|
|
* <p>Add a random offset, then quantize the result (snap-to-grid).
|
|
* Random offsets alone can be low-passed pretty easily.
|
|
* Snap-to-grid on its own is excellent unless you are sitting on a
|
|
* grid boundary and bouncing between quantizations.
|
|
* The combination is quite hard to reverse engineer.
|
|
* <p>The random offset used is smaller than the goal accuracy
|
|
* ({@link #COARSE_ACCURACY_M}), in order to give relatively stable
|
|
* results after quantization.
|
|
*/
|
|
private static Location createCoarse(Location fine) {
|
|
Location coarse = new Location(fine);
|
|
|
|
coarse.removeBearing();
|
|
coarse.removeSpeed();
|
|
coarse.removeAltitude();
|
|
|
|
double lat = coarse.getLatitude();
|
|
double lon = coarse.getLongitude();
|
|
|
|
// wrap
|
|
lat = wrapLatitude(lat);
|
|
lon = wrapLongitude(lon);
|
|
|
|
if (coarse.getAccuracy() < COARSE_ACCURACY_M / 2) {
|
|
// apply a random offset
|
|
double fudgeDistance = COARSE_ACCURACY_M / 2.0 - coarse.getAccuracy();
|
|
lat += (Math.random() - 0.5) * distanceToDegreesLatitude(fudgeDistance);
|
|
lon += (Math.random() - 0.5) * distanceToDegreesLongitude(fudgeDistance, lat);
|
|
}
|
|
|
|
// wrap
|
|
lat = wrapLatitude(lat);
|
|
lon = wrapLongitude(lon);
|
|
|
|
// quantize (snap-to-grid)
|
|
double latGranularity = distanceToDegreesLatitude(COARSE_ACCURACY_M);
|
|
double lonGranularity = distanceToDegreesLongitude(COARSE_ACCURACY_M, lat);
|
|
long latQuantized = Math.round(lat / latGranularity);
|
|
long lonQuantized = Math.round(lon / lonGranularity);
|
|
lat = latQuantized * latGranularity;
|
|
lon = lonQuantized * lonGranularity;
|
|
|
|
// wrap again
|
|
lat = wrapLatitude(lat);
|
|
lon = wrapLongitude(lon);
|
|
|
|
// apply
|
|
coarse.setLatitude(lat);
|
|
coarse.setLongitude(lon);
|
|
coarse.setAccuracy((float)COARSE_ACCURACY_M);
|
|
|
|
return coarse;
|
|
}
|
|
|
|
|
|
private static Location getCoarseLocationExtra(Location location) {
|
|
Bundle extras = location.getExtras();
|
|
if (extras == null) return null;
|
|
Parcelable parcel = extras.getParcelable(EXTRA_COARSE_LOCATION);
|
|
if (parcel == null) return null;
|
|
if (!(parcel instanceof Location)) return null;
|
|
Location coarse = (Location) parcel;
|
|
if (coarse.getAccuracy() < COARSE_ACCURACY_M) return null;
|
|
return coarse;
|
|
}
|
|
|
|
private static Location addCoarseLocationExtra(Location location) {
|
|
Bundle extras = location.getExtras();
|
|
if (extras == null) extras = new Bundle();
|
|
Location coarse = createCoarse(location);
|
|
extras.putParcelable(EXTRA_COARSE_LOCATION, coarse);
|
|
location.setExtras(extras);
|
|
return coarse;
|
|
}
|
|
|
|
private void log(String log) {
|
|
if (Log.isLoggable(TAG, Log.VERBOSE)) {
|
|
Slog.d(TAG, log);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
|
|
if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP)
|
|
!= PackageManager.PERMISSION_GRANTED) {
|
|
pw.println("Permission Denial: can't dump LocationManagerService from from pid="
|
|
+ Binder.getCallingPid()
|
|
+ ", uid=" + Binder.getCallingUid());
|
|
return;
|
|
}
|
|
|
|
synchronized (mLock) {
|
|
pw.println("Current Location Manager state:");
|
|
pw.println(" Location Listeners:");
|
|
for (Receiver receiver : mReceivers.values()) {
|
|
pw.println(" " + receiver);
|
|
}
|
|
pw.println(" Records by Provider:");
|
|
for (Map.Entry<String, ArrayList<UpdateRecord>> entry : mRecordsByProvider.entrySet()) {
|
|
pw.println(" " + entry.getKey() + ":");
|
|
for (UpdateRecord record : entry.getValue()) {
|
|
pw.println(" " + record);
|
|
}
|
|
}
|
|
pw.println(" Last Known Locations:");
|
|
for (Map.Entry<String, Location> entry : mLastLocation.entrySet()) {
|
|
String provider = entry.getKey();
|
|
Location location = entry.getValue();
|
|
pw.println(" " + provider + ": " + location);
|
|
}
|
|
|
|
mGeofenceManager.dump(pw);
|
|
|
|
if (mEnabledProviders.size() > 0) {
|
|
pw.println(" Enabled Providers:");
|
|
for (String i : mEnabledProviders) {
|
|
pw.println(" " + i);
|
|
}
|
|
|
|
}
|
|
if (mDisabledProviders.size() > 0) {
|
|
pw.println(" Disabled Providers:");
|
|
for (String i : mDisabledProviders) {
|
|
pw.println(" " + i);
|
|
}
|
|
|
|
}
|
|
if (mMockProviders.size() > 0) {
|
|
pw.println(" Mock Providers:");
|
|
for (Map.Entry<String, MockProvider> i : mMockProviders.entrySet()) {
|
|
i.getValue().dump(pw, " ");
|
|
}
|
|
}
|
|
|
|
if (args.length > 0 && "short".equals(args[0])) {
|
|
return;
|
|
}
|
|
for (LocationProviderInterface provider: mProviders) {
|
|
pw.print(provider.getName() + " Internal State");
|
|
if (provider instanceof LocationProviderProxy) {
|
|
LocationProviderProxy proxy = (LocationProviderProxy) provider;
|
|
pw.print(" (" + proxy.getConnectedPackageName() + ")");
|
|
}
|
|
pw.println(":");
|
|
provider.dump(fd, pw, args);
|
|
}
|
|
}
|
|
}
|
|
}
|