LocationManagerService.java revision b7e9922722f50dbf1911eb12e3ee8023c1450086
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server; 18 19import java.io.BufferedReader; 20import java.io.File; 21import java.io.FileDescriptor; 22import java.io.FileReader; 23import java.io.FileWriter; 24import java.io.IOException; 25import java.io.PrintWriter; 26import java.util.ArrayList; 27import java.util.HashMap; 28import java.util.HashSet; 29import java.util.List; 30import java.util.Map; 31import java.util.Observable; 32import java.util.Observer; 33import java.util.Set; 34import java.util.regex.Pattern; 35 36import android.app.PendingIntent; 37import android.content.BroadcastReceiver; 38import android.content.ContentQueryMap; 39import android.content.ContentResolver; 40import android.content.Context; 41import android.content.Intent; 42import android.content.IntentFilter; 43import android.content.pm.PackageManager; 44import android.database.Cursor; 45import android.location.Address; 46import android.location.IGeocodeProvider; 47import android.location.IGpsStatusListener; 48import android.location.IGpsStatusProvider; 49import android.location.ILocationListener; 50import android.location.ILocationManager; 51import android.location.ILocationProvider; 52import android.location.Location; 53import android.location.LocationManager; 54import android.location.LocationProvider; 55import android.net.ConnectivityManager; 56import android.net.Uri; 57import android.os.Binder; 58import android.os.Bundle; 59import android.os.Handler; 60import android.os.IBinder; 61import android.os.Looper; 62import android.os.Message; 63import android.os.PowerManager; 64import android.os.Process; 65import android.os.RemoteException; 66import android.os.SystemClock; 67import android.provider.Settings; 68import android.util.Log; 69import android.util.PrintWriterPrinter; 70 71import com.android.internal.location.GpsLocationProvider; 72import com.android.internal.location.LocationProviderProxy; 73import com.android.internal.location.MockProvider; 74 75/** 76 * The service class that manages LocationProviders and issues location 77 * updates and alerts. 78 * 79 * {@hide} 80 */ 81public class LocationManagerService extends ILocationManager.Stub implements Runnable { 82 private static final String TAG = "LocationManagerService"; 83 private static final boolean LOCAL_LOGV = false; 84 85 // Minimum time interval between last known location writes, in milliseconds. 86 private static final long MIN_LAST_KNOWN_LOCATION_TIME = 60L * 1000L; 87 88 // Max time to hold wake lock for, in milliseconds. 89 private static final long MAX_TIME_FOR_WAKE_LOCK = 60 * 1000L; 90 91 // The last time a location was written, by provider name. 92 private HashMap<String,Long> mLastWriteTime = new HashMap<String,Long>(); 93 94 private static final Pattern PATTERN_COMMA = Pattern.compile(","); 95 96 private static final String ACCESS_FINE_LOCATION = 97 android.Manifest.permission.ACCESS_FINE_LOCATION; 98 private static final String ACCESS_COARSE_LOCATION = 99 android.Manifest.permission.ACCESS_COARSE_LOCATION; 100 private static final String ACCESS_MOCK_LOCATION = 101 android.Manifest.permission.ACCESS_MOCK_LOCATION; 102 private static final String ACCESS_LOCATION_EXTRA_COMMANDS = 103 android.Manifest.permission.ACCESS_LOCATION_EXTRA_COMMANDS; 104 private static final String INSTALL_LOCATION_PROVIDER = 105 android.Manifest.permission.INSTALL_LOCATION_PROVIDER; 106 107 // Set of providers that are explicitly enabled 108 private final Set<String> mEnabledProviders = new HashSet<String>(); 109 110 // Set of providers that are explicitly disabled 111 private final Set<String> mDisabledProviders = new HashSet<String>(); 112 113 // Locations, status values, and extras for mock providers 114 private final HashMap<String,MockProvider> mMockProviders = new HashMap<String,MockProvider>(); 115 116 private static boolean sProvidersLoaded = false; 117 118 private final Context mContext; 119 private IGeocodeProvider mGeocodeProvider; 120 private IGpsStatusProvider mGpsStatusProvider; 121 private LocationWorkerHandler mLocationHandler; 122 123 // Handler messages 124 private static final int MESSAGE_LOCATION_CHANGED = 1; 125 126 // wakelock variables 127 private final static String WAKELOCK_KEY = "LocationManagerService"; 128 private PowerManager.WakeLock mWakeLock = null; 129 private int mPendingBroadcasts; 130 131 /** 132 * List of all receivers. 133 */ 134 private final HashMap<Object, Receiver> mReceivers = new HashMap<Object, Receiver>(); 135 136 137 /** 138 * List of location providers. 139 */ 140 private final ArrayList<LocationProviderProxy> mProviders = 141 new ArrayList<LocationProviderProxy>(); 142 private final HashMap<String, LocationProviderProxy> mProvidersByName 143 = new HashMap<String, LocationProviderProxy>(); 144 145 /** 146 * Object used internally for synchronization 147 */ 148 private final Object mLock = new Object(); 149 150 /** 151 * Mapping from provider name to all its UpdateRecords 152 */ 153 private final HashMap<String,ArrayList<UpdateRecord>> mRecordsByProvider = 154 new HashMap<String,ArrayList<UpdateRecord>>(); 155 156 // Proximity listeners 157 private Receiver mProximityReceiver = null; 158 private ILocationListener mProximityListener = null; 159 private HashMap<PendingIntent,ProximityAlert> mProximityAlerts = 160 new HashMap<PendingIntent,ProximityAlert>(); 161 private HashSet<ProximityAlert> mProximitiesEntered = 162 new HashSet<ProximityAlert>(); 163 164 // Last known location for each provider 165 private HashMap<String,Location> mLastKnownLocation = 166 new HashMap<String,Location>(); 167 168 private int mNetworkState = LocationProvider.TEMPORARILY_UNAVAILABLE; 169 170 // for Settings change notification 171 private ContentQueryMap mSettings; 172 173 /** 174 * A wrapper class holding either an ILocationListener or a PendingIntent to receive 175 * location updates. 176 */ 177 private final class Receiver implements IBinder.DeathRecipient, PendingIntent.OnFinished { 178 final ILocationListener mListener; 179 final PendingIntent mPendingIntent; 180 final Object mKey; 181 final HashMap<String,UpdateRecord> mUpdateRecords = new HashMap<String,UpdateRecord>(); 182 int mPendingBroadcasts; 183 184 Receiver(ILocationListener listener) { 185 mListener = listener; 186 mPendingIntent = null; 187 mKey = listener.asBinder(); 188 } 189 190 Receiver(PendingIntent intent) { 191 mPendingIntent = intent; 192 mListener = null; 193 mKey = intent; 194 } 195 196 @Override 197 public boolean equals(Object otherObj) { 198 if (otherObj instanceof Receiver) { 199 return mKey.equals( 200 ((Receiver)otherObj).mKey); 201 } 202 return false; 203 } 204 205 @Override 206 public int hashCode() { 207 return mKey.hashCode(); 208 } 209 210 @Override 211 public String toString() { 212 if (mListener != null) { 213 return "Receiver{" 214 + Integer.toHexString(System.identityHashCode(this)) 215 + " Listener " + mKey + "}"; 216 } else { 217 return "Receiver{" 218 + Integer.toHexString(System.identityHashCode(this)) 219 + " Intent " + mKey + "}"; 220 } 221 } 222 223 public boolean isListener() { 224 return mListener != null; 225 } 226 227 public boolean isPendingIntent() { 228 return mPendingIntent != null; 229 } 230 231 public ILocationListener getListener() { 232 if (mListener != null) { 233 return mListener; 234 } 235 throw new IllegalStateException("Request for non-existent listener"); 236 } 237 238 public PendingIntent getPendingIntent() { 239 if (mPendingIntent != null) { 240 return mPendingIntent; 241 } 242 throw new IllegalStateException("Request for non-existent intent"); 243 } 244 245 public boolean callStatusChangedLocked(String provider, int status, Bundle extras) { 246 if (mListener != null) { 247 try { 248 synchronized (this) { 249 // synchronize to ensure incrementPendingBroadcastsLocked() 250 // is called before decrementPendingBroadcasts() 251 mListener.onStatusChanged(provider, status, extras); 252 if (mListener != mProximityListener) { 253 // call this after broadcasting so we do not increment 254 // if we throw an exeption. 255 incrementPendingBroadcastsLocked(); 256 } 257 } 258 } catch (RemoteException e) { 259 return false; 260 } 261 } else { 262 Intent statusChanged = new Intent(); 263 statusChanged.putExtras(extras); 264 statusChanged.putExtra(LocationManager.KEY_STATUS_CHANGED, status); 265 try { 266 synchronized (this) { 267 // synchronize to ensure incrementPendingBroadcastsLocked() 268 // is called before decrementPendingBroadcasts() 269 mPendingIntent.send(mContext, 0, statusChanged, this, mLocationHandler); 270 // call this after broadcasting so we do not increment 271 // if we throw an exeption. 272 incrementPendingBroadcastsLocked(); 273 } 274 } catch (PendingIntent.CanceledException e) { 275 return false; 276 } 277 } 278 return true; 279 } 280 281 public boolean callLocationChangedLocked(Location location) { 282 if (mListener != null) { 283 try { 284 synchronized (this) { 285 // synchronize to ensure incrementPendingBroadcastsLocked() 286 // is called before decrementPendingBroadcasts() 287 mListener.onLocationChanged(location); 288 if (mListener != mProximityListener) { 289 // call this after broadcasting so we do not increment 290 // if we throw an exeption. 291 incrementPendingBroadcastsLocked(); 292 } 293 } 294 } catch (RemoteException e) { 295 return false; 296 } 297 } else { 298 Intent locationChanged = new Intent(); 299 locationChanged.putExtra(LocationManager.KEY_LOCATION_CHANGED, location); 300 try { 301 synchronized (this) { 302 // synchronize to ensure incrementPendingBroadcastsLocked() 303 // is called before decrementPendingBroadcasts() 304 mPendingIntent.send(mContext, 0, locationChanged, this, mLocationHandler); 305 // call this after broadcasting so we do not increment 306 // if we throw an exeption. 307 incrementPendingBroadcastsLocked(); 308 } 309 } catch (PendingIntent.CanceledException e) { 310 return false; 311 } 312 } 313 return true; 314 } 315 316 public boolean callProviderEnabledLocked(String provider, boolean enabled) { 317 if (mListener != null) { 318 try { 319 synchronized (this) { 320 // synchronize to ensure incrementPendingBroadcastsLocked() 321 // is called before decrementPendingBroadcasts() 322 if (enabled) { 323 mListener.onProviderEnabled(provider); 324 } else { 325 mListener.onProviderDisabled(provider); 326 } 327 if (mListener != mProximityListener) { 328 // call this after broadcasting so we do not increment 329 // if we throw an exeption. 330 incrementPendingBroadcastsLocked(); 331 } 332 } 333 } catch (RemoteException e) { 334 return false; 335 } 336 } else { 337 Intent providerIntent = new Intent(); 338 providerIntent.putExtra(LocationManager.KEY_PROVIDER_ENABLED, enabled); 339 try { 340 synchronized (this) { 341 // synchronize to ensure incrementPendingBroadcastsLocked() 342 // is called before decrementPendingBroadcasts() 343 mPendingIntent.send(mContext, 0, providerIntent, this, mLocationHandler); 344 // call this after broadcasting so we do not increment 345 // if we throw an exeption. 346 incrementPendingBroadcastsLocked(); 347 } 348 } catch (PendingIntent.CanceledException e) { 349 return false; 350 } 351 } 352 return true; 353 } 354 355 public void binderDied() { 356 if (LOCAL_LOGV) { 357 Log.v(TAG, "Location listener died"); 358 } 359 synchronized (mLock) { 360 removeUpdatesLocked(this); 361 } 362 synchronized (this) { 363 if (mPendingBroadcasts > 0) { 364 LocationManagerService.this.decrementPendingBroadcasts(); 365 mPendingBroadcasts = 0; 366 } 367 } 368 } 369 370 public void onSendFinished(PendingIntent pendingIntent, Intent intent, 371 int resultCode, String resultData, Bundle resultExtras) { 372 synchronized (this) { 373 decrementPendingBroadcastsLocked(); 374 } 375 } 376 377 // this must be called while synchronized by caller in a synchronized block 378 // containing the sending of the broadcaset 379 private void incrementPendingBroadcastsLocked() { 380 if (mPendingBroadcasts++ == 0) { 381 LocationManagerService.this.incrementPendingBroadcasts(); 382 } 383 } 384 385 private void decrementPendingBroadcastsLocked() { 386 if (--mPendingBroadcasts == 0) { 387 LocationManagerService.this.decrementPendingBroadcasts(); 388 } 389 } 390 } 391 392 public void locationCallbackFinished(ILocationListener listener) { 393 Receiver receiver = getReceiver(listener); 394 if (receiver != null) { 395 synchronized (receiver) { 396 // so wakelock calls will succeed 397 long identity = Binder.clearCallingIdentity(); 398 receiver.decrementPendingBroadcastsLocked(); 399 Binder.restoreCallingIdentity(identity); 400 } 401 } 402 } 403 404 private final class SettingsObserver implements Observer { 405 public void update(Observable o, Object arg) { 406 synchronized (mLock) { 407 updateProvidersLocked(); 408 } 409 } 410 } 411 412 private Location readLastKnownLocationLocked(String provider) { 413 Location location = null; 414 String s = null; 415 try { 416 File f = new File(LocationManager.SYSTEM_DIR + "/location." 417 + provider); 418 if (!f.exists()) { 419 return null; 420 } 421 BufferedReader reader = new BufferedReader(new FileReader(f), 256); 422 s = reader.readLine(); 423 } catch (IOException e) { 424 Log.w(TAG, "Unable to read last known location", e); 425 } 426 427 if (s == null) { 428 return null; 429 } 430 try { 431 String[] tokens = PATTERN_COMMA.split(s); 432 int idx = 0; 433 long time = Long.parseLong(tokens[idx++]); 434 double latitude = Double.parseDouble(tokens[idx++]); 435 double longitude = Double.parseDouble(tokens[idx++]); 436 double altitude = Double.parseDouble(tokens[idx++]); 437 float bearing = Float.parseFloat(tokens[idx++]); 438 float speed = Float.parseFloat(tokens[idx++]); 439 440 location = new Location(provider); 441 location.setTime(time); 442 location.setLatitude(latitude); 443 location.setLongitude(longitude); 444 location.setAltitude(altitude); 445 location.setBearing(bearing); 446 location.setSpeed(speed); 447 } catch (NumberFormatException nfe) { 448 Log.e(TAG, "NumberFormatException reading last known location", nfe); 449 return null; 450 } 451 452 return location; 453 } 454 455 private void writeLastKnownLocationLocked(String provider, 456 Location location) { 457 long now = SystemClock.elapsedRealtime(); 458 Long last = mLastWriteTime.get(provider); 459 if ((last != null) 460 && (now - last.longValue() < MIN_LAST_KNOWN_LOCATION_TIME)) { 461 return; 462 } 463 mLastWriteTime.put(provider, now); 464 465 StringBuilder sb = new StringBuilder(100); 466 sb.append(location.getTime()); 467 sb.append(','); 468 sb.append(location.getLatitude()); 469 sb.append(','); 470 sb.append(location.getLongitude()); 471 sb.append(','); 472 sb.append(location.getAltitude()); 473 sb.append(','); 474 sb.append(location.getBearing()); 475 sb.append(','); 476 sb.append(location.getSpeed()); 477 478 FileWriter writer = null; 479 try { 480 File d = new File(LocationManager.SYSTEM_DIR); 481 if (!d.exists()) { 482 if (!d.mkdirs()) { 483 Log.w(TAG, "Unable to create directory to write location"); 484 return; 485 } 486 } 487 File f = new File(LocationManager.SYSTEM_DIR + "/location." + provider); 488 writer = new FileWriter(f); 489 writer.write(sb.toString()); 490 } catch (IOException e) { 491 Log.w(TAG, "Unable to write location", e); 492 } finally { 493 if (writer != null) { 494 try { 495 writer.close(); 496 } catch (IOException e) { 497 Log.w(TAG, "Exception closing file", e); 498 } 499 } 500 } 501 } 502 503 private void addProvider(LocationProviderProxy provider) { 504 mProviders.add(provider); 505 mProvidersByName.put(provider.getName(), provider); 506 } 507 508 private void removeProvider(LocationProviderProxy provider) { 509 mProviders.remove(provider); 510 provider.unlinkProvider(); 511 mProvidersByName.remove(provider.getName()); 512 } 513 514 private void loadProviders() { 515 synchronized (mLock) { 516 if (sProvidersLoaded) { 517 return; 518 } 519 520 // Load providers 521 loadProvidersLocked(); 522 sProvidersLoaded = true; 523 } 524 } 525 526 private void loadProvidersLocked() { 527 try { 528 _loadProvidersLocked(); 529 } catch (Exception e) { 530 Log.e(TAG, "Exception loading providers:", e); 531 } 532 } 533 534 private void _loadProvidersLocked() { 535 // Attempt to load "real" providers first 536 if (GpsLocationProvider.isSupported()) { 537 // Create a gps location provider 538 GpsLocationProvider provider = new GpsLocationProvider(mContext, this); 539 mGpsStatusProvider = provider.getGpsStatusProvider(); 540 LocationProviderProxy proxy = new LocationProviderProxy(LocationManager.GPS_PROVIDER, provider); 541 addProvider(proxy); 542 } 543 544 updateProvidersLocked(); 545 } 546 547 /** 548 * @param context the context that the LocationManagerService runs in 549 */ 550 public LocationManagerService(Context context) { 551 super(); 552 mContext = context; 553 554 Thread thread = new Thread(null, this, "LocationManagerService"); 555 thread.start(); 556 557 if (LOCAL_LOGV) { 558 Log.v(TAG, "Constructed LocationManager Service"); 559 } 560 } 561 562 private void initialize() { 563 // Create a wake lock, needs to be done before calling loadProviders() below 564 PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 565 mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, WAKELOCK_KEY); 566 567 // Load providers 568 loadProviders(); 569 570 // Register for Network (Wifi or Mobile) updates 571 IntentFilter intentFilter = new IntentFilter(); 572 intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION); 573 // Register for Package Manager updates 574 intentFilter.addAction(Intent.ACTION_PACKAGE_REMOVED); 575 intentFilter.addAction(Intent.ACTION_PACKAGE_RESTARTED); 576 mContext.registerReceiver(mBroadcastReceiver, intentFilter); 577 578 // listen for settings changes 579 ContentResolver resolver = mContext.getContentResolver(); 580 Cursor settingsCursor = resolver.query(Settings.Secure.CONTENT_URI, null, 581 "(" + Settings.System.NAME + "=?)", 582 new String[]{Settings.Secure.LOCATION_PROVIDERS_ALLOWED}, 583 null); 584 mSettings = new ContentQueryMap(settingsCursor, Settings.System.NAME, true, mLocationHandler); 585 SettingsObserver settingsObserver = new SettingsObserver(); 586 mSettings.addObserver(settingsObserver); 587 } 588 589 public void run() 590 { 591 Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND); 592 Looper.prepare(); 593 mLocationHandler = new LocationWorkerHandler(); 594 initialize(); 595 Looper.loop(); 596 } 597 598 public void installLocationProvider(String name, ILocationProvider provider) { 599 if (mContext.checkCallingOrSelfPermission(INSTALL_LOCATION_PROVIDER) 600 != PackageManager.PERMISSION_GRANTED) { 601 throw new SecurityException("Requires INSTALL_LOCATION_PROVIDER permission"); 602 } 603 604 synchronized (mLock) { 605 // check to see if we are reinstalling a dead provider 606 LocationProviderProxy oldProvider = mProvidersByName.get(name); 607 if (oldProvider != null) { 608 if (oldProvider.isDead()) { 609 Log.d(TAG, "replacing dead provider"); 610 removeProvider(oldProvider); 611 } else { 612 throw new IllegalArgumentException("Provider \"" + name + "\" already exists"); 613 } 614 } 615 616 LocationProviderProxy proxy = new LocationProviderProxy(name, provider); 617 addProvider(proxy); 618 updateProvidersLocked(); 619 620 // notify provider of current network state 621 proxy.updateNetworkState(mNetworkState); 622 } 623 } 624 625 public void installGeocodeProvider(IGeocodeProvider provider) { 626 if (mContext.checkCallingOrSelfPermission(INSTALL_LOCATION_PROVIDER) 627 != PackageManager.PERMISSION_GRANTED) { 628 throw new SecurityException("Requires INSTALL_LOCATION_PROVIDER permission"); 629 } 630 631 mGeocodeProvider = provider; 632 } 633 634 private boolean isAllowedBySettingsLocked(String provider) { 635 if (mEnabledProviders.contains(provider)) { 636 return true; 637 } 638 if (mDisabledProviders.contains(provider)) { 639 return false; 640 } 641 // Use system settings 642 ContentResolver resolver = mContext.getContentResolver(); 643 String allowedProviders = Settings.Secure.getString(resolver, 644 Settings.Secure.LOCATION_PROVIDERS_ALLOWED); 645 646 return ((allowedProviders != null) && (allowedProviders.contains(provider))); 647 } 648 649 private void checkPermissionsSafe(String provider) { 650 if (LocationManager.GPS_PROVIDER.equals(provider) 651 && (mContext.checkCallingOrSelfPermission(ACCESS_FINE_LOCATION) 652 != PackageManager.PERMISSION_GRANTED)) { 653 throw new SecurityException("Requires ACCESS_FINE_LOCATION permission"); 654 } 655 if (LocationManager.NETWORK_PROVIDER.equals(provider) 656 && (mContext.checkCallingOrSelfPermission(ACCESS_FINE_LOCATION) 657 != PackageManager.PERMISSION_GRANTED) 658 && (mContext.checkCallingOrSelfPermission(ACCESS_COARSE_LOCATION) 659 != PackageManager.PERMISSION_GRANTED)) { 660 throw new SecurityException( 661 "Requires ACCESS_FINE_LOCATION or ACCESS_COARSE_LOCATION permission"); 662 } 663 } 664 665 private boolean isAllowedProviderSafe(String provider) { 666 if (LocationManager.GPS_PROVIDER.equals(provider) 667 && (mContext.checkCallingOrSelfPermission(ACCESS_FINE_LOCATION) 668 != PackageManager.PERMISSION_GRANTED)) { 669 return false; 670 } 671 if (LocationManager.NETWORK_PROVIDER.equals(provider) 672 && (mContext.checkCallingOrSelfPermission(ACCESS_FINE_LOCATION) 673 != PackageManager.PERMISSION_GRANTED) 674 && (mContext.checkCallingOrSelfPermission(ACCESS_COARSE_LOCATION) 675 != PackageManager.PERMISSION_GRANTED)) { 676 return false; 677 } 678 679 return true; 680 } 681 682 public List<String> getAllProviders() { 683 try { 684 synchronized (mLock) { 685 return _getAllProvidersLocked(); 686 } 687 } catch (SecurityException se) { 688 throw se; 689 } catch (Exception e) { 690 Log.e(TAG, "getAllProviders got exception:", e); 691 return null; 692 } 693 } 694 695 private List<String> _getAllProvidersLocked() { 696 if (LOCAL_LOGV) { 697 Log.v(TAG, "getAllProviders"); 698 } 699 ArrayList<String> out = new ArrayList<String>(mProviders.size()); 700 for (int i = mProviders.size() - 1; i >= 0; i--) { 701 LocationProviderProxy p = mProviders.get(i); 702 out.add(p.getName()); 703 } 704 return out; 705 } 706 707 public List<String> getProviders(boolean enabledOnly) { 708 try { 709 synchronized (mLock) { 710 return _getProvidersLocked(enabledOnly); 711 } 712 } catch (SecurityException se) { 713 throw se; 714 } catch (Exception e) { 715 Log.e(TAG, "getProviders got exception:", e); 716 return null; 717 } 718 } 719 720 private List<String> _getProvidersLocked(boolean enabledOnly) { 721 if (LOCAL_LOGV) { 722 Log.v(TAG, "getProviders"); 723 } 724 ArrayList<String> out = new ArrayList<String>(mProviders.size()); 725 for (int i = mProviders.size() - 1; i >= 0; i--) { 726 LocationProviderProxy p = mProviders.get(i); 727 String name = p.getName(); 728 if (isAllowedProviderSafe(name)) { 729 if (enabledOnly && !isAllowedBySettingsLocked(name)) { 730 continue; 731 } 732 out.add(name); 733 } 734 } 735 return out; 736 } 737 738 private void updateProvidersLocked() { 739 for (int i = mProviders.size() - 1; i >= 0; i--) { 740 LocationProviderProxy p = mProviders.get(i); 741 boolean isEnabled = p.isEnabled(); 742 String name = p.getName(); 743 boolean shouldBeEnabled = isAllowedBySettingsLocked(name); 744 745 if (isEnabled && !shouldBeEnabled) { 746 updateProviderListenersLocked(name, false); 747 } else if (!isEnabled && shouldBeEnabled) { 748 updateProviderListenersLocked(name, true); 749 } 750 751 } 752 } 753 754 private void updateProviderListenersLocked(String provider, boolean enabled) { 755 int listeners = 0; 756 757 LocationProviderProxy p = mProvidersByName.get(provider); 758 if (p == null) { 759 return; 760 } 761 762 ArrayList<Receiver> deadReceivers = null; 763 764 ArrayList<UpdateRecord> records = mRecordsByProvider.get(provider); 765 if (records != null) { 766 final int N = records.size(); 767 for (int i=0; i<N; i++) { 768 UpdateRecord record = records.get(i); 769 // Sends a notification message to the receiver 770 if (!record.mReceiver.callProviderEnabledLocked(provider, enabled)) { 771 if (deadReceivers == null) { 772 deadReceivers = new ArrayList<Receiver>(); 773 } 774 deadReceivers.add(record.mReceiver); 775 } 776 listeners++; 777 } 778 } 779 780 if (deadReceivers != null) { 781 for (int i=deadReceivers.size()-1; i>=0; i--) { 782 removeUpdatesLocked(deadReceivers.get(i)); 783 } 784 } 785 786 if (enabled) { 787 p.enable(); 788 if (listeners > 0) { 789 p.setMinTime(getMinTimeLocked(provider)); 790 p.enableLocationTracking(true); 791 } 792 } else { 793 p.enableLocationTracking(false); 794 p.disable(); 795 } 796 } 797 798 private long getMinTimeLocked(String provider) { 799 long minTime = Long.MAX_VALUE; 800 ArrayList<UpdateRecord> records = mRecordsByProvider.get(provider); 801 if (records != null) { 802 for (int i=records.size()-1; i>=0; i--) { 803 minTime = Math.min(minTime, records.get(i).mMinTime); 804 } 805 } 806 return minTime; 807 } 808 809 private class UpdateRecord { 810 final String mProvider; 811 final Receiver mReceiver; 812 final long mMinTime; 813 final float mMinDistance; 814 final int mUid; 815 Location mLastFixBroadcast; 816 long mLastStatusBroadcast; 817 818 /** 819 * Note: must be constructed with lock held. 820 */ 821 UpdateRecord(String provider, long minTime, float minDistance, 822 Receiver receiver, int uid) { 823 mProvider = provider; 824 mReceiver = receiver; 825 mMinTime = minTime; 826 mMinDistance = minDistance; 827 mUid = uid; 828 829 ArrayList<UpdateRecord> records = mRecordsByProvider.get(provider); 830 if (records == null) { 831 records = new ArrayList<UpdateRecord>(); 832 mRecordsByProvider.put(provider, records); 833 } 834 if (!records.contains(this)) { 835 records.add(this); 836 } 837 } 838 839 /** 840 * Method to be called when a record will no longer be used. Calling this multiple times 841 * must have the same effect as calling it once. 842 */ 843 void disposeLocked() { 844 ArrayList<UpdateRecord> records = mRecordsByProvider.get(this.mProvider); 845 records.remove(this); 846 } 847 848 @Override 849 public String toString() { 850 return "UpdateRecord{" 851 + Integer.toHexString(System.identityHashCode(this)) 852 + " " + mProvider + " " + mReceiver + "}"; 853 } 854 855 void dump(PrintWriter pw, String prefix) { 856 pw.println(prefix + this); 857 pw.println(prefix + "mProvider=" + mProvider + " mReceiver=" + mReceiver); 858 pw.println(prefix + "mMinTime=" + mMinTime + " mMinDistance=" + mMinDistance); 859 pw.println(prefix + "mUid=" + mUid); 860 pw.println(prefix + "mLastFixBroadcast:"); 861 mLastFixBroadcast.dump(new PrintWriterPrinter(pw), prefix + " "); 862 pw.println(prefix + "mLastStatusBroadcast=" + mLastStatusBroadcast); 863 } 864 865 /** 866 * Calls dispose(). 867 */ 868 @Override protected void finalize() { 869 synchronized (mLock) { 870 disposeLocked(); 871 } 872 } 873 } 874 875 private Receiver getReceiver(ILocationListener listener) { 876 IBinder binder = listener.asBinder(); 877 Receiver receiver = mReceivers.get(binder); 878 if (receiver == null) { 879 receiver = new Receiver(listener); 880 mReceivers.put(binder, receiver); 881 882 try { 883 if (receiver.isListener()) { 884 receiver.getListener().asBinder().linkToDeath(receiver, 0); 885 } 886 } catch (RemoteException e) { 887 Log.e(TAG, "linkToDeath failed:", e); 888 return null; 889 } 890 } 891 return receiver; 892 } 893 894 private Receiver getReceiver(PendingIntent intent) { 895 Receiver receiver = mReceivers.get(intent); 896 if (receiver == null) { 897 receiver = new Receiver(intent); 898 mReceivers.put(intent, receiver); 899 } 900 return receiver; 901 } 902 903 private boolean providerHasListener(String provider, int uid, Receiver excludedReceiver) { 904 ArrayList<UpdateRecord> records = mRecordsByProvider.get(provider); 905 if (records != null) { 906 for (int i = records.size() - 1; i >= 0; i--) { 907 UpdateRecord record = records.get(i); 908 if (record.mUid == uid && record.mReceiver != excludedReceiver) { 909 return true; 910 } 911 } 912 } 913 for (ProximityAlert alert : mProximityAlerts.values()) { 914 if (alert.mUid == uid) { 915 return true; 916 } 917 } 918 return false; 919 } 920 921 public void requestLocationUpdates(String provider, 922 long minTime, float minDistance, ILocationListener listener) { 923 924 try { 925 synchronized (mLock) { 926 requestLocationUpdatesLocked(provider, minTime, minDistance, getReceiver(listener)); 927 } 928 } catch (SecurityException se) { 929 throw se; 930 } catch (Exception e) { 931 Log.e(TAG, "requestUpdates got exception:", e); 932 } 933 } 934 935 public void requestLocationUpdatesPI(String provider, 936 long minTime, float minDistance, PendingIntent intent) { 937 try { 938 synchronized (mLock) { 939 requestLocationUpdatesLocked(provider, minTime, minDistance, getReceiver(intent)); 940 } 941 } catch (SecurityException se) { 942 throw se; 943 } catch (Exception e) { 944 Log.e(TAG, "requestUpdates got exception:", e); 945 } 946 } 947 948 private void requestLocationUpdatesLocked(String provider, 949 long minTime, float minDistance, Receiver receiver) { 950 if (LOCAL_LOGV) { 951 Log.v(TAG, "_requestLocationUpdates: listener = " + receiver); 952 } 953 954 LocationProviderProxy proxy = mProvidersByName.get(provider); 955 if (proxy == null) { 956 throw new IllegalArgumentException("provider=" + provider); 957 } 958 959 checkPermissionsSafe(provider); 960 961 // so wakelock calls will succeed 962 final int callingUid = Binder.getCallingUid(); 963 boolean newUid = !providerHasListener(provider, callingUid, null); 964 long identity = Binder.clearCallingIdentity(); 965 try { 966 UpdateRecord r = new UpdateRecord(provider, minTime, minDistance, receiver, callingUid); 967 UpdateRecord oldRecord = receiver.mUpdateRecords.put(provider, r); 968 if (oldRecord != null) { 969 oldRecord.disposeLocked(); 970 } 971 972 if (newUid) { 973 proxy.addListener(callingUid); 974 } 975 976 boolean isProviderEnabled = isAllowedBySettingsLocked(provider); 977 if (isProviderEnabled) { 978 long minTimeForProvider = getMinTimeLocked(provider); 979 proxy.setMinTime(minTimeForProvider); 980 proxy.enableLocationTracking(true); 981 } else { 982 // Notify the listener that updates are currently disabled 983 receiver.callProviderEnabledLocked(provider, false); 984 } 985 } finally { 986 Binder.restoreCallingIdentity(identity); 987 } 988 } 989 990 public void removeUpdates(ILocationListener listener) { 991 try { 992 synchronized (mLock) { 993 removeUpdatesLocked(getReceiver(listener)); 994 } 995 } catch (SecurityException se) { 996 throw se; 997 } catch (Exception e) { 998 Log.e(TAG, "removeUpdates got exception:", e); 999 } 1000 } 1001 1002 public void removeUpdatesPI(PendingIntent intent) { 1003 try { 1004 synchronized (mLock) { 1005 removeUpdatesLocked(getReceiver(intent)); 1006 } 1007 } catch (SecurityException se) { 1008 throw se; 1009 } catch (Exception e) { 1010 Log.e(TAG, "removeUpdates got exception:", e); 1011 } 1012 } 1013 1014 private void removeUpdatesLocked(Receiver receiver) { 1015 if (LOCAL_LOGV) { 1016 Log.v(TAG, "_removeUpdates: listener = " + receiver); 1017 } 1018 1019 // so wakelock calls will succeed 1020 final int callingUid = Binder.getCallingUid(); 1021 long identity = Binder.clearCallingIdentity(); 1022 try { 1023 if (mReceivers.remove(receiver.mKey) != null && receiver.isListener()) { 1024 receiver.getListener().asBinder().unlinkToDeath(receiver, 0); 1025 } 1026 1027 // Record which providers were associated with this listener 1028 HashSet<String> providers = new HashSet<String>(); 1029 HashMap<String,UpdateRecord> oldRecords = receiver.mUpdateRecords; 1030 if (oldRecords != null) { 1031 // Call dispose() on the obsolete update records. 1032 for (UpdateRecord record : oldRecords.values()) { 1033 if (!providerHasListener(record.mProvider, callingUid, receiver)) { 1034 LocationProviderProxy proxy = mProvidersByName.get(record.mProvider); 1035 if (proxy != null) { 1036 proxy.removeListener(callingUid); 1037 } 1038 } 1039 record.disposeLocked(); 1040 } 1041 // Accumulate providers 1042 providers.addAll(oldRecords.keySet()); 1043 } 1044 1045 // See if the providers associated with this listener have any 1046 // other listeners; if one does, inform it of the new smallest minTime 1047 // value; if one does not, disable location tracking for it 1048 for (String provider : providers) { 1049 // If provider is already disabled, don't need to do anything 1050 if (!isAllowedBySettingsLocked(provider)) { 1051 continue; 1052 } 1053 1054 boolean hasOtherListener = false; 1055 ArrayList<UpdateRecord> recordsForProvider = mRecordsByProvider.get(provider); 1056 if (recordsForProvider != null && recordsForProvider.size() > 0) { 1057 hasOtherListener = true; 1058 } 1059 1060 LocationProviderProxy p = mProvidersByName.get(provider); 1061 if (p != null) { 1062 if (hasOtherListener) { 1063 p.setMinTime(getMinTimeLocked(provider)); 1064 } else { 1065 p.enableLocationTracking(false); 1066 } 1067 } 1068 } 1069 } finally { 1070 Binder.restoreCallingIdentity(identity); 1071 } 1072 } 1073 1074 public boolean addGpsStatusListener(IGpsStatusListener listener) { 1075 if (mGpsStatusProvider == null) { 1076 return false; 1077 } 1078 if (mContext.checkCallingOrSelfPermission(ACCESS_FINE_LOCATION) != 1079 PackageManager.PERMISSION_GRANTED) { 1080 throw new SecurityException("Requires ACCESS_FINE_LOCATION permission"); 1081 } 1082 1083 try { 1084 mGpsStatusProvider.addGpsStatusListener(listener); 1085 } catch (RemoteException e) { 1086 Log.e(TAG, "mGpsStatusProvider.addGpsStatusListener failed", e); 1087 return false; 1088 } 1089 return true; 1090 } 1091 1092 public void removeGpsStatusListener(IGpsStatusListener listener) { 1093 synchronized (mLock) { 1094 try { 1095 mGpsStatusProvider.removeGpsStatusListener(listener); 1096 } catch (Exception e) { 1097 Log.e(TAG, "mGpsStatusProvider.removeGpsStatusListener failed", e); 1098 } 1099 } 1100 } 1101 1102 public boolean sendExtraCommand(String provider, String command, Bundle extras) { 1103 // first check for permission to the provider 1104 checkPermissionsSafe(provider); 1105 // and check for ACCESS_LOCATION_EXTRA_COMMANDS 1106 if ((mContext.checkCallingOrSelfPermission(ACCESS_LOCATION_EXTRA_COMMANDS) 1107 != PackageManager.PERMISSION_GRANTED)) { 1108 throw new SecurityException("Requires ACCESS_LOCATION_EXTRA_COMMANDS permission"); 1109 } 1110 1111 synchronized (mLock) { 1112 LocationProviderProxy proxy = mProvidersByName.get(provider); 1113 if (provider == null) { 1114 return false; 1115 } 1116 1117 return proxy.sendExtraCommand(command, extras); 1118 } 1119 } 1120 1121 class ProximityAlert { 1122 final int mUid; 1123 final double mLatitude; 1124 final double mLongitude; 1125 final float mRadius; 1126 final long mExpiration; 1127 final PendingIntent mIntent; 1128 final Location mLocation; 1129 1130 public ProximityAlert(int uid, double latitude, double longitude, 1131 float radius, long expiration, PendingIntent intent) { 1132 mUid = uid; 1133 mLatitude = latitude; 1134 mLongitude = longitude; 1135 mRadius = radius; 1136 mExpiration = expiration; 1137 mIntent = intent; 1138 1139 mLocation = new Location(""); 1140 mLocation.setLatitude(latitude); 1141 mLocation.setLongitude(longitude); 1142 } 1143 1144 long getExpiration() { 1145 return mExpiration; 1146 } 1147 1148 PendingIntent getIntent() { 1149 return mIntent; 1150 } 1151 1152 boolean isInProximity(double latitude, double longitude) { 1153 Location loc = new Location(""); 1154 loc.setLatitude(latitude); 1155 loc.setLongitude(longitude); 1156 1157 double radius = loc.distanceTo(mLocation); 1158 return radius <= mRadius; 1159 } 1160 1161 @Override 1162 public String toString() { 1163 return "ProximityAlert{" 1164 + Integer.toHexString(System.identityHashCode(this)) 1165 + " uid " + mUid + mIntent + "}"; 1166 } 1167 1168 void dump(PrintWriter pw, String prefix) { 1169 pw.println(prefix + this); 1170 pw.println(prefix + "mLatitude=" + mLatitude + " mLongitude=" + mLongitude); 1171 pw.println(prefix + "mRadius=" + mRadius + " mExpiration=" + mExpiration); 1172 pw.println(prefix + "mIntent=" + mIntent); 1173 pw.println(prefix + "mLocation:"); 1174 mLocation.dump(new PrintWriterPrinter(pw), prefix + " "); 1175 } 1176 } 1177 1178 // Listener for receiving locations to trigger proximity alerts 1179 class ProximityListener extends ILocationListener.Stub implements PendingIntent.OnFinished { 1180 1181 boolean isGpsAvailable = false; 1182 1183 // Note: this is called with the lock held. 1184 public void onLocationChanged(Location loc) { 1185 1186 // If Gps is available, then ignore updates from NetworkLocationProvider 1187 if (loc.getProvider().equals(LocationManager.GPS_PROVIDER)) { 1188 isGpsAvailable = true; 1189 } 1190 if (isGpsAvailable && loc.getProvider().equals(LocationManager.NETWORK_PROVIDER)) { 1191 return; 1192 } 1193 1194 // Process proximity alerts 1195 long now = System.currentTimeMillis(); 1196 double latitude = loc.getLatitude(); 1197 double longitude = loc.getLongitude(); 1198 ArrayList<PendingIntent> intentsToRemove = null; 1199 1200 for (ProximityAlert alert : mProximityAlerts.values()) { 1201 PendingIntent intent = alert.getIntent(); 1202 long expiration = alert.getExpiration(); 1203 1204 if ((expiration == -1) || (now <= expiration)) { 1205 boolean entered = mProximitiesEntered.contains(alert); 1206 boolean inProximity = 1207 alert.isInProximity(latitude, longitude); 1208 if (!entered && inProximity) { 1209 if (LOCAL_LOGV) { 1210 Log.v(TAG, "Entered alert"); 1211 } 1212 mProximitiesEntered.add(alert); 1213 Intent enteredIntent = new Intent(); 1214 enteredIntent.putExtra(LocationManager.KEY_PROXIMITY_ENTERING, true); 1215 try { 1216 synchronized (this) { 1217 // synchronize to ensure incrementPendingBroadcasts() 1218 // is called before decrementPendingBroadcasts() 1219 intent.send(mContext, 0, enteredIntent, this, mLocationHandler); 1220 // call this after broadcasting so we do not increment 1221 // if we throw an exeption. 1222 incrementPendingBroadcasts(); 1223 } 1224 } catch (PendingIntent.CanceledException e) { 1225 if (LOCAL_LOGV) { 1226 Log.v(TAG, "Canceled proximity alert: " + alert, e); 1227 } 1228 if (intentsToRemove == null) { 1229 intentsToRemove = new ArrayList<PendingIntent>(); 1230 } 1231 intentsToRemove.add(intent); 1232 } 1233 } else if (entered && !inProximity) { 1234 if (LOCAL_LOGV) { 1235 Log.v(TAG, "Exited alert"); 1236 } 1237 mProximitiesEntered.remove(alert); 1238 Intent exitedIntent = new Intent(); 1239 exitedIntent.putExtra(LocationManager.KEY_PROXIMITY_ENTERING, false); 1240 try { 1241 synchronized (this) { 1242 // synchronize to ensure incrementPendingBroadcasts() 1243 // is called before decrementPendingBroadcasts() 1244 intent.send(mContext, 0, exitedIntent, this, mLocationHandler); 1245 // call this after broadcasting so we do not increment 1246 // if we throw an exeption. 1247 incrementPendingBroadcasts(); 1248 } 1249 } catch (PendingIntent.CanceledException e) { 1250 if (LOCAL_LOGV) { 1251 Log.v(TAG, "Canceled proximity alert: " + alert, e); 1252 } 1253 if (intentsToRemove == null) { 1254 intentsToRemove = new ArrayList<PendingIntent>(); 1255 } 1256 intentsToRemove.add(intent); 1257 } 1258 } 1259 } else { 1260 // Mark alert for expiration 1261 if (LOCAL_LOGV) { 1262 Log.v(TAG, "Expiring proximity alert: " + alert); 1263 } 1264 if (intentsToRemove == null) { 1265 intentsToRemove = new ArrayList<PendingIntent>(); 1266 } 1267 intentsToRemove.add(alert.getIntent()); 1268 } 1269 } 1270 1271 // Remove expired alerts 1272 if (intentsToRemove != null) { 1273 for (PendingIntent i : intentsToRemove) { 1274 mProximityAlerts.remove(i); 1275 ProximityAlert alert = mProximityAlerts.get(i); 1276 mProximitiesEntered.remove(alert); 1277 } 1278 } 1279 1280 } 1281 1282 // Note: this is called with the lock held. 1283 public void onProviderDisabled(String provider) { 1284 if (provider.equals(LocationManager.GPS_PROVIDER)) { 1285 isGpsAvailable = false; 1286 } 1287 } 1288 1289 // Note: this is called with the lock held. 1290 public void onProviderEnabled(String provider) { 1291 // ignore 1292 } 1293 1294 // Note: this is called with the lock held. 1295 public void onStatusChanged(String provider, int status, Bundle extras) { 1296 if ((provider.equals(LocationManager.GPS_PROVIDER)) && 1297 (status != LocationProvider.AVAILABLE)) { 1298 isGpsAvailable = false; 1299 } 1300 } 1301 1302 public void onSendFinished(PendingIntent pendingIntent, Intent intent, 1303 int resultCode, String resultData, Bundle resultExtras) { 1304 // synchronize to ensure incrementPendingBroadcasts() 1305 // is called before decrementPendingBroadcasts() 1306 synchronized (this) { 1307 decrementPendingBroadcasts(); 1308 } 1309 } 1310 } 1311 1312 public void addProximityAlert(double latitude, double longitude, 1313 float radius, long expiration, PendingIntent intent) { 1314 try { 1315 synchronized (mLock) { 1316 addProximityAlertLocked(latitude, longitude, radius, expiration, intent); 1317 } 1318 } catch (SecurityException se) { 1319 throw se; 1320 } catch (Exception e) { 1321 Log.e(TAG, "addProximityAlert got exception:", e); 1322 } 1323 } 1324 1325 private void addProximityAlertLocked(double latitude, double longitude, 1326 float radius, long expiration, PendingIntent intent) { 1327 if (LOCAL_LOGV) { 1328 Log.v(TAG, "addProximityAlert: latitude = " + latitude + 1329 ", longitude = " + longitude + 1330 ", expiration = " + expiration + 1331 ", intent = " + intent); 1332 } 1333 1334 // Require ability to access all providers for now 1335 if (!isAllowedProviderSafe(LocationManager.GPS_PROVIDER) || 1336 !isAllowedProviderSafe(LocationManager.NETWORK_PROVIDER)) { 1337 throw new SecurityException("Requires ACCESS_FINE_LOCATION permission"); 1338 } 1339 1340 if (expiration != -1) { 1341 expiration += System.currentTimeMillis(); 1342 } 1343 ProximityAlert alert = new ProximityAlert(Binder.getCallingUid(), 1344 latitude, longitude, radius, expiration, intent); 1345 mProximityAlerts.put(intent, alert); 1346 1347 if (mProximityReceiver == null) { 1348 mProximityListener = new ProximityListener(); 1349 mProximityReceiver = new Receiver(mProximityListener); 1350 1351 for (int i = mProviders.size() - 1; i >= 0; i--) { 1352 LocationProviderProxy provider = mProviders.get(i); 1353 requestLocationUpdatesLocked(provider.getName(), 1000L, 1.0f, mProximityReceiver); 1354 } 1355 } 1356 } 1357 1358 public void removeProximityAlert(PendingIntent intent) { 1359 try { 1360 synchronized (mLock) { 1361 removeProximityAlertLocked(intent); 1362 } 1363 } catch (SecurityException se) { 1364 throw se; 1365 } catch (Exception e) { 1366 Log.e(TAG, "removeProximityAlert got exception:", e); 1367 } 1368 } 1369 1370 private void removeProximityAlertLocked(PendingIntent intent) { 1371 if (LOCAL_LOGV) { 1372 Log.v(TAG, "removeProximityAlert: intent = " + intent); 1373 } 1374 1375 mProximityAlerts.remove(intent); 1376 if (mProximityAlerts.size() == 0) { 1377 removeUpdatesLocked(mProximityReceiver); 1378 mProximityReceiver = null; 1379 mProximityListener = null; 1380 } 1381 } 1382 1383 /** 1384 * @return null if the provider does not exits 1385 * @throw SecurityException if the provider is not allowed to be 1386 * accessed by the caller 1387 */ 1388 public Bundle getProviderInfo(String provider) { 1389 try { 1390 synchronized (mLock) { 1391 return _getProviderInfoLocked(provider); 1392 } 1393 } catch (SecurityException se) { 1394 throw se; 1395 } catch (Exception e) { 1396 Log.e(TAG, "_getProviderInfo got exception:", e); 1397 return null; 1398 } 1399 } 1400 1401 private Bundle _getProviderInfoLocked(String provider) { 1402 LocationProviderProxy p = mProvidersByName.get(provider); 1403 if (p == null) { 1404 return null; 1405 } 1406 1407 checkPermissionsSafe(provider); 1408 1409 Bundle b = new Bundle(); 1410 b.putBoolean("network", p.requiresNetwork()); 1411 b.putBoolean("satellite", p.requiresSatellite()); 1412 b.putBoolean("cell", p.requiresCell()); 1413 b.putBoolean("cost", p.hasMonetaryCost()); 1414 b.putBoolean("altitude", p.supportsAltitude()); 1415 b.putBoolean("speed", p.supportsSpeed()); 1416 b.putBoolean("bearing", p.supportsBearing()); 1417 b.putInt("power", p.getPowerRequirement()); 1418 b.putInt("accuracy", p.getAccuracy()); 1419 1420 return b; 1421 } 1422 1423 public boolean isProviderEnabled(String provider) { 1424 try { 1425 synchronized (mLock) { 1426 return _isProviderEnabledLocked(provider); 1427 } 1428 } catch (SecurityException se) { 1429 throw se; 1430 } catch (Exception e) { 1431 Log.e(TAG, "isProviderEnabled got exception:", e); 1432 return false; 1433 } 1434 } 1435 1436 public void reportLocation(Location location) { 1437 if (mContext.checkCallingOrSelfPermission(INSTALL_LOCATION_PROVIDER) 1438 != PackageManager.PERMISSION_GRANTED) { 1439 throw new SecurityException("Requires INSTALL_LOCATION_PROVIDER permission"); 1440 } 1441 1442 mLocationHandler.removeMessages(MESSAGE_LOCATION_CHANGED, location); 1443 Message m = Message.obtain(mLocationHandler, MESSAGE_LOCATION_CHANGED, location); 1444 mLocationHandler.sendMessageAtFrontOfQueue(m); 1445 } 1446 1447 private boolean _isProviderEnabledLocked(String provider) { 1448 checkPermissionsSafe(provider); 1449 1450 LocationProviderProxy p = mProvidersByName.get(provider); 1451 if (p == null) { 1452 throw new IllegalArgumentException("provider=" + provider); 1453 } 1454 return isAllowedBySettingsLocked(provider); 1455 } 1456 1457 public Location getLastKnownLocation(String provider) { 1458 try { 1459 synchronized (mLock) { 1460 return _getLastKnownLocationLocked(provider); 1461 } 1462 } catch (SecurityException se) { 1463 throw se; 1464 } catch (Exception e) { 1465 Log.e(TAG, "getLastKnownLocation got exception:", e); 1466 return null; 1467 } 1468 } 1469 1470 private Location _getLastKnownLocationLocked(String provider) { 1471 checkPermissionsSafe(provider); 1472 1473 LocationProviderProxy p = mProvidersByName.get(provider); 1474 if (p == null) { 1475 throw new IllegalArgumentException("provider=" + provider); 1476 } 1477 1478 if (!isAllowedBySettingsLocked(provider)) { 1479 return null; 1480 } 1481 1482 Location location = mLastKnownLocation.get(provider); 1483 if (location == null) { 1484 // Get the persistent last known location for the provider 1485 location = readLastKnownLocationLocked(provider); 1486 if (location != null) { 1487 mLastKnownLocation.put(provider, location); 1488 } 1489 } 1490 1491 return location; 1492 } 1493 1494 private static boolean shouldBroadcastSafe(Location loc, Location lastLoc, UpdateRecord record) { 1495 // Always broadcast the first update 1496 if (lastLoc == null) { 1497 return true; 1498 } 1499 1500 // Don't broadcast same location again regardless of condition 1501 // TODO - we should probably still rebroadcast if user explicitly sets a minTime > 0 1502 if (loc.getTime() == lastLoc.getTime()) { 1503 return false; 1504 } 1505 1506 // Check whether sufficient distance has been traveled 1507 double minDistance = record.mMinDistance; 1508 if (minDistance > 0.0) { 1509 if (loc.distanceTo(lastLoc) <= minDistance) { 1510 return false; 1511 } 1512 } 1513 1514 return true; 1515 } 1516 1517 private void handleLocationChangedLocked(Location location) { 1518 String provider = location.getProvider(); 1519 ArrayList<UpdateRecord> records = mRecordsByProvider.get(provider); 1520 if (records == null || records.size() == 0) { 1521 return; 1522 } 1523 1524 LocationProviderProxy p = mProvidersByName.get(provider); 1525 if (p == null) { 1526 return; 1527 } 1528 1529 // Update last known location for provider 1530 Location lastLocation = mLastKnownLocation.get(provider); 1531 if (lastLocation == null) { 1532 mLastKnownLocation.put(provider, new Location(location)); 1533 } else { 1534 lastLocation.set(location); 1535 } 1536 writeLastKnownLocationLocked(provider, location); 1537 1538 // Fetch latest status update time 1539 long newStatusUpdateTime = p.getStatusUpdateTime(); 1540 1541 // Get latest status 1542 Bundle extras = new Bundle(); 1543 int status = p.getStatus(extras); 1544 1545 ArrayList<Receiver> deadReceivers = null; 1546 1547 // Broadcast location or status to all listeners 1548 final int N = records.size(); 1549 for (int i=0; i<N; i++) { 1550 UpdateRecord r = records.get(i); 1551 Receiver receiver = r.mReceiver; 1552 1553 Location lastLoc = r.mLastFixBroadcast; 1554 if ((lastLoc == null) || shouldBroadcastSafe(location, lastLoc, r)) { 1555 if (lastLoc == null) { 1556 lastLoc = new Location(location); 1557 r.mLastFixBroadcast = lastLoc; 1558 } else { 1559 lastLoc.set(location); 1560 } 1561 if (!receiver.callLocationChangedLocked(location)) { 1562 Log.w(TAG, "RemoteException calling onLocationChanged on " + receiver); 1563 if (deadReceivers == null) { 1564 deadReceivers = new ArrayList<Receiver>(); 1565 } 1566 deadReceivers.add(receiver); 1567 } 1568 } 1569 1570 long prevStatusUpdateTime = r.mLastStatusBroadcast; 1571 if ((newStatusUpdateTime > prevStatusUpdateTime) && 1572 (prevStatusUpdateTime != 0 || status != LocationProvider.AVAILABLE)) { 1573 1574 r.mLastStatusBroadcast = newStatusUpdateTime; 1575 if (!receiver.callStatusChangedLocked(provider, status, extras)) { 1576 Log.w(TAG, "RemoteException calling onStatusChanged on " + receiver); 1577 if (deadReceivers == null) { 1578 deadReceivers = new ArrayList<Receiver>(); 1579 } 1580 if (!deadReceivers.contains(receiver)) { 1581 deadReceivers.add(receiver); 1582 } 1583 } 1584 } 1585 } 1586 1587 if (deadReceivers != null) { 1588 for (int i=deadReceivers.size()-1; i>=0; i--) { 1589 removeUpdatesLocked(deadReceivers.get(i)); 1590 } 1591 } 1592 } 1593 1594 private class LocationWorkerHandler extends Handler { 1595 1596 @Override 1597 public void handleMessage(Message msg) { 1598 try { 1599 if (msg.what == MESSAGE_LOCATION_CHANGED) { 1600 // log("LocationWorkerHandler: MESSAGE_LOCATION_CHANGED!"); 1601 1602 synchronized (mLock) { 1603 Location location = (Location) msg.obj; 1604 String provider = location.getProvider(); 1605 1606 // notify other providers of the new location 1607 for (int i = mProviders.size() - 1; i >= 0; i--) { 1608 LocationProviderProxy proxy = mProviders.get(i); 1609 if (!provider.equals(proxy.getName())) { 1610 proxy.updateLocation(location); 1611 } 1612 } 1613 1614 if (isAllowedBySettingsLocked(provider)) { 1615 handleLocationChangedLocked(location); 1616 } 1617 } 1618 } 1619 } catch (Exception e) { 1620 // Log, don't crash! 1621 Log.e(TAG, "Exception in LocationWorkerHandler.handleMessage:", e); 1622 } 1623 } 1624 } 1625 1626 private final BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() { 1627 @Override 1628 public void onReceive(Context context, Intent intent) { 1629 String action = intent.getAction(); 1630 1631 if (action.equals(Intent.ACTION_PACKAGE_REMOVED) 1632 || action.equals(Intent.ACTION_PACKAGE_RESTARTED)) { 1633 synchronized (mLock) { 1634 int uid = intent.getIntExtra(Intent.EXTRA_UID, -1); 1635 if (uid >= 0) { 1636 ArrayList<Receiver> removedRecs = null; 1637 for (ArrayList<UpdateRecord> i : mRecordsByProvider.values()) { 1638 for (int j=i.size()-1; j>=0; j--) { 1639 UpdateRecord ur = i.get(j); 1640 if (ur.mReceiver.isPendingIntent() && ur.mUid == uid) { 1641 if (removedRecs == null) { 1642 removedRecs = new ArrayList<Receiver>(); 1643 } 1644 if (!removedRecs.contains(ur.mReceiver)) { 1645 removedRecs.add(ur.mReceiver); 1646 } 1647 } 1648 } 1649 } 1650 ArrayList<ProximityAlert> removedAlerts = null; 1651 for (ProximityAlert i : mProximityAlerts.values()) { 1652 if (i.mUid == uid) { 1653 if (removedAlerts == null) { 1654 removedAlerts = new ArrayList<ProximityAlert>(); 1655 } 1656 if (!removedAlerts.contains(i)) { 1657 removedAlerts.add(i); 1658 } 1659 } 1660 } 1661 if (removedRecs != null) { 1662 for (int i=removedRecs.size()-1; i>=0; i--) { 1663 removeUpdatesLocked(removedRecs.get(i)); 1664 } 1665 } 1666 if (removedAlerts != null) { 1667 for (int i=removedAlerts.size()-1; i>=0; i--) { 1668 removeProximityAlertLocked(removedAlerts.get(i).mIntent); 1669 } 1670 } 1671 } 1672 } 1673 } else if (action.equals(ConnectivityManager.CONNECTIVITY_ACTION)) { 1674 boolean noConnectivity = 1675 intent.getBooleanExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, false); 1676 if (!noConnectivity) { 1677 mNetworkState = LocationProvider.AVAILABLE; 1678 } else { 1679 mNetworkState = LocationProvider.TEMPORARILY_UNAVAILABLE; 1680 } 1681 1682 // Notify location providers of current network state 1683 synchronized (mLock) { 1684 for (int i = mProviders.size() - 1; i >= 0; i--) { 1685 LocationProviderProxy provider = mProviders.get(i); 1686 if (provider.requiresNetwork()) { 1687 provider.updateNetworkState(mNetworkState); 1688 } 1689 } 1690 } 1691 } 1692 } 1693 }; 1694 1695 // Wake locks 1696 1697 private void incrementPendingBroadcasts() { 1698 synchronized (mWakeLock) { 1699 if (mPendingBroadcasts++ == 0) { 1700 try { 1701 mWakeLock.acquire(); 1702 log("Acquired wakelock"); 1703 } catch (Exception e) { 1704 // This is to catch a runtime exception thrown when we try to release an 1705 // already released lock. 1706 Log.e(TAG, "exception in acquireWakeLock()", e); 1707 } 1708 } 1709 } 1710 } 1711 1712 private void decrementPendingBroadcasts() { 1713 synchronized (mWakeLock) { 1714 if (--mPendingBroadcasts == 0) { 1715 try { 1716 // Release wake lock 1717 if (mWakeLock.isHeld()) { 1718 mWakeLock.release(); 1719 log("Released wakelock"); 1720 } else { 1721 log("Can't release wakelock again!"); 1722 } 1723 } catch (Exception e) { 1724 // This is to catch a runtime exception thrown when we try to release an 1725 // already released lock. 1726 Log.e(TAG, "exception in releaseWakeLock()", e); 1727 } 1728 } 1729 } 1730 } 1731 1732 // Geocoder 1733 1734 public String getFromLocation(double latitude, double longitude, int maxResults, 1735 String language, String country, String variant, String appName, List<Address> addrs) { 1736 if (mGeocodeProvider != null) { 1737 try { 1738 return mGeocodeProvider.getFromLocation(latitude, longitude, maxResults, language, country, 1739 variant, appName, addrs); 1740 } catch (RemoteException e) { 1741 Log.e(TAG, "getFromLocation failed", e); 1742 mGeocodeProvider = null; 1743 } 1744 } 1745 return null; 1746 } 1747 1748 1749 public String getFromLocationName(String locationName, 1750 double lowerLeftLatitude, double lowerLeftLongitude, 1751 double upperRightLatitude, double upperRightLongitude, int maxResults, 1752 String language, String country, String variant, String appName, List<Address> addrs) { 1753 1754 if (mGeocodeProvider != null) { 1755 try { 1756 return mGeocodeProvider.getFromLocationName(locationName, lowerLeftLatitude, 1757 lowerLeftLongitude, upperRightLatitude, upperRightLongitude, 1758 maxResults, language, country, variant, appName, addrs); 1759 } catch (RemoteException e) { 1760 Log.e(TAG, "getFromLocationName failed", e); 1761 mGeocodeProvider = null; 1762 } 1763 } 1764 return null; 1765 } 1766 1767 // Mock Providers 1768 1769 private void checkMockPermissionsSafe() { 1770 boolean allowMocks = Settings.Secure.getInt(mContext.getContentResolver(), 1771 Settings.Secure.ALLOW_MOCK_LOCATION, 0) == 1; 1772 if (!allowMocks) { 1773 throw new SecurityException("Requires ACCESS_MOCK_LOCATION secure setting"); 1774 } 1775 1776 if (mContext.checkCallingPermission(ACCESS_MOCK_LOCATION) != 1777 PackageManager.PERMISSION_GRANTED) { 1778 throw new SecurityException("Requires ACCESS_MOCK_LOCATION permission"); 1779 } 1780 } 1781 1782 public void addTestProvider(String name, boolean requiresNetwork, boolean requiresSatellite, 1783 boolean requiresCell, boolean hasMonetaryCost, boolean supportsAltitude, 1784 boolean supportsSpeed, boolean supportsBearing, int powerRequirement, int accuracy) { 1785 checkMockPermissionsSafe(); 1786 1787 synchronized (mLock) { 1788 MockProvider provider = new MockProvider(name, this, 1789 requiresNetwork, requiresSatellite, 1790 requiresCell, hasMonetaryCost, supportsAltitude, 1791 supportsSpeed, supportsBearing, powerRequirement, accuracy); 1792 if (mProvidersByName.get(name) != null) { 1793 throw new IllegalArgumentException("Provider \"" + name + "\" already exists"); 1794 } 1795 1796 // clear calling identity so INSTALL_LOCATION_PROVIDER permission is not required 1797 long identity = Binder.clearCallingIdentity(); 1798 addProvider(new LocationProviderProxy(name, provider)); 1799 mMockProviders.put(name, provider); 1800 updateProvidersLocked(); 1801 Binder.restoreCallingIdentity(identity); 1802 } 1803 } 1804 1805 public void removeTestProvider(String provider) { 1806 checkMockPermissionsSafe(); 1807 synchronized (mLock) { 1808 MockProvider mockProvider = mMockProviders.get(provider); 1809 if (mockProvider == null) { 1810 throw new IllegalArgumentException("Provider \"" + provider + "\" unknown"); 1811 } 1812 removeProvider(mProvidersByName.get(provider)); 1813 mMockProviders.remove(mockProvider); 1814 updateProvidersLocked(); 1815 } 1816 } 1817 1818 public void setTestProviderLocation(String provider, Location loc) { 1819 checkMockPermissionsSafe(); 1820 synchronized (mLock) { 1821 MockProvider mockProvider = mMockProviders.get(provider); 1822 if (mockProvider == null) { 1823 throw new IllegalArgumentException("Provider \"" + provider + "\" unknown"); 1824 } 1825 // clear calling identity so INSTALL_LOCATION_PROVIDER permission is not required 1826 long identity = Binder.clearCallingIdentity(); 1827 mockProvider.setLocation(loc); 1828 Binder.restoreCallingIdentity(identity); 1829 } 1830 } 1831 1832 public void clearTestProviderLocation(String provider) { 1833 checkMockPermissionsSafe(); 1834 synchronized (mLock) { 1835 MockProvider mockProvider = mMockProviders.get(provider); 1836 if (mockProvider == null) { 1837 throw new IllegalArgumentException("Provider \"" + provider + "\" unknown"); 1838 } 1839 mockProvider.clearLocation(); 1840 } 1841 } 1842 1843 public void setTestProviderEnabled(String provider, boolean enabled) { 1844 checkMockPermissionsSafe(); 1845 synchronized (mLock) { 1846 MockProvider mockProvider = mMockProviders.get(provider); 1847 if (mockProvider == null) { 1848 throw new IllegalArgumentException("Provider \"" + provider + "\" unknown"); 1849 } 1850 if (enabled) { 1851 mockProvider.enable(); 1852 mEnabledProviders.add(provider); 1853 mDisabledProviders.remove(provider); 1854 } else { 1855 mockProvider.disable(); 1856 mEnabledProviders.remove(provider); 1857 mDisabledProviders.add(provider); 1858 } 1859 updateProvidersLocked(); 1860 } 1861 } 1862 1863 public void clearTestProviderEnabled(String provider) { 1864 checkMockPermissionsSafe(); 1865 synchronized (mLock) { 1866 MockProvider mockProvider = mMockProviders.get(provider); 1867 if (mockProvider == null) { 1868 throw new IllegalArgumentException("Provider \"" + provider + "\" unknown"); 1869 } 1870 mEnabledProviders.remove(provider); 1871 mDisabledProviders.remove(provider); 1872 updateProvidersLocked(); 1873 } 1874 } 1875 1876 public void setTestProviderStatus(String provider, int status, Bundle extras, long updateTime) { 1877 checkMockPermissionsSafe(); 1878 synchronized (mLock) { 1879 MockProvider mockProvider = mMockProviders.get(provider); 1880 if (mockProvider == null) { 1881 throw new IllegalArgumentException("Provider \"" + provider + "\" unknown"); 1882 } 1883 mockProvider.setStatus(status, extras, updateTime); 1884 } 1885 } 1886 1887 public void clearTestProviderStatus(String provider) { 1888 checkMockPermissionsSafe(); 1889 synchronized (mLock) { 1890 MockProvider mockProvider = mMockProviders.get(provider); 1891 if (mockProvider == null) { 1892 throw new IllegalArgumentException("Provider \"" + provider + "\" unknown"); 1893 } 1894 mockProvider.clearStatus(); 1895 } 1896 } 1897 1898 private void log(String log) { 1899 if (Log.isLoggable(TAG, Log.VERBOSE)) { 1900 Log.d(TAG, log); 1901 } 1902 } 1903 1904 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 1905 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 1906 != PackageManager.PERMISSION_GRANTED) { 1907 pw.println("Permission Denial: can't dump LocationManagerService from from pid=" 1908 + Binder.getCallingPid() 1909 + ", uid=" + Binder.getCallingUid()); 1910 return; 1911 } 1912 1913 synchronized (mLock) { 1914 pw.println("Current Location Manager state:"); 1915 pw.println(" sProvidersLoaded=" + sProvidersLoaded); 1916 pw.println(" Listeners:"); 1917 int N = mReceivers.size(); 1918 for (int i=0; i<N; i++) { 1919 pw.println(" " + mReceivers.get(i)); 1920 } 1921 pw.println(" Location Listeners:"); 1922 for (Receiver i : mReceivers.values()) { 1923 pw.println(" " + i + ":"); 1924 for (Map.Entry<String,UpdateRecord> j : i.mUpdateRecords.entrySet()) { 1925 pw.println(" " + j.getKey() + ":"); 1926 j.getValue().dump(pw, " "); 1927 } 1928 } 1929 pw.println(" Records by Provider:"); 1930 for (Map.Entry<String, ArrayList<UpdateRecord>> i 1931 : mRecordsByProvider.entrySet()) { 1932 pw.println(" " + i.getKey() + ":"); 1933 for (UpdateRecord j : i.getValue()) { 1934 pw.println(" " + j + ":"); 1935 j.dump(pw, " "); 1936 } 1937 } 1938 pw.println(" Last Known Locations:"); 1939 for (Map.Entry<String, Location> i 1940 : mLastKnownLocation.entrySet()) { 1941 pw.println(" " + i.getKey() + ":"); 1942 i.getValue().dump(new PrintWriterPrinter(pw), " "); 1943 } 1944 if (mProximityAlerts.size() > 0) { 1945 pw.println(" Proximity Alerts:"); 1946 for (Map.Entry<PendingIntent, ProximityAlert> i 1947 : mProximityAlerts.entrySet()) { 1948 pw.println(" " + i.getKey() + ":"); 1949 i.getValue().dump(pw, " "); 1950 } 1951 } 1952 if (mProximitiesEntered.size() > 0) { 1953 pw.println(" Proximities Entered:"); 1954 for (ProximityAlert i : mProximitiesEntered) { 1955 pw.println(" " + i + ":"); 1956 i.dump(pw, " "); 1957 } 1958 } 1959 pw.println(" mProximityReceiver=" + mProximityReceiver); 1960 pw.println(" mProximityListener=" + mProximityListener); 1961 if (mEnabledProviders.size() > 0) { 1962 pw.println(" Enabled Providers:"); 1963 for (String i : mEnabledProviders) { 1964 pw.println(" " + i); 1965 } 1966 1967 } 1968 if (mDisabledProviders.size() > 0) { 1969 pw.println(" Disabled Providers:"); 1970 for (String i : mDisabledProviders) { 1971 pw.println(" " + i); 1972 } 1973 1974 } 1975 if (mMockProviders.size() > 0) { 1976 pw.println(" Mock Providers:"); 1977 for (Map.Entry<String, MockProvider> i : mMockProviders.entrySet()) { 1978 i.getValue().dump(pw, " "); 1979 } 1980 } 1981 } 1982 } 1983} 1984