WallpaperManagerService.java revision ac531941fb9259057b86c08fb95b82cd67f6d8c0
1/* 2 * Copyright (C) 2008 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.wallpaper; 18 19import static android.os.ParcelFileDescriptor.*; 20 21import android.app.ActivityManagerNative; 22import android.app.AppGlobals; 23import android.app.AppOpsManager; 24import android.app.IUserSwitchObserver; 25import android.app.IWallpaperManager; 26import android.app.IWallpaperManagerCallback; 27import android.app.PendingIntent; 28import android.app.WallpaperInfo; 29import android.app.WallpaperManager; 30import android.app.backup.BackupManager; 31import android.app.backup.WallpaperBackupHelper; 32import android.content.BroadcastReceiver; 33import android.content.ComponentName; 34import android.content.Context; 35import android.content.Intent; 36import android.content.IntentFilter; 37import android.content.ServiceConnection; 38import android.content.pm.IPackageManager; 39import android.content.pm.PackageManager; 40import android.content.pm.ResolveInfo; 41import android.content.pm.ServiceInfo; 42import android.content.pm.PackageManager.NameNotFoundException; 43import android.content.pm.UserInfo; 44import android.content.res.Resources; 45import android.graphics.Point; 46import android.graphics.Rect; 47import android.os.Binder; 48import android.os.Bundle; 49import android.os.Environment; 50import android.os.FileUtils; 51import android.os.IBinder; 52import android.os.IRemoteCallback; 53import android.os.RemoteException; 54import android.os.FileObserver; 55import android.os.ParcelFileDescriptor; 56import android.os.RemoteCallbackList; 57import android.os.SELinux; 58import android.os.ServiceManager; 59import android.os.SystemClock; 60import android.os.UserHandle; 61import android.os.UserManager; 62import android.service.wallpaper.IWallpaperConnection; 63import android.service.wallpaper.IWallpaperEngine; 64import android.service.wallpaper.IWallpaperService; 65import android.service.wallpaper.WallpaperService; 66import android.util.EventLog; 67import android.util.Slog; 68import android.util.SparseArray; 69import android.util.Xml; 70import android.view.Display; 71import android.view.IWindowManager; 72import android.view.WindowManager; 73 74import java.io.FileDescriptor; 75import java.io.IOException; 76import java.io.InputStream; 77import java.io.File; 78import java.io.FileNotFoundException; 79import java.io.FileInputStream; 80import java.io.FileOutputStream; 81import java.io.PrintWriter; 82import java.util.List; 83 84import org.xmlpull.v1.XmlPullParser; 85import org.xmlpull.v1.XmlPullParserException; 86import org.xmlpull.v1.XmlSerializer; 87 88import com.android.internal.content.PackageMonitor; 89import com.android.internal.util.FastXmlSerializer; 90import com.android.internal.util.JournaledFile; 91import com.android.internal.R; 92import com.android.server.EventLogTags; 93 94public class WallpaperManagerService extends IWallpaperManager.Stub { 95 static final String TAG = "WallpaperManagerService"; 96 static final boolean DEBUG = false; 97 98 final Object mLock = new Object[0]; 99 100 /** 101 * Minimum time between crashes of a wallpaper service for us to consider 102 * restarting it vs. just reverting to the static wallpaper. 103 */ 104 static final long MIN_WALLPAPER_CRASH_TIME = 10000; 105 static final int MAX_WALLPAPER_COMPONENT_LOG_LENGTH = 128; 106 static final String WALLPAPER = "wallpaper"; 107 static final String WALLPAPER_INFO = "wallpaper_info.xml"; 108 109 /** 110 * Observes the wallpaper for changes and notifies all IWallpaperServiceCallbacks 111 * that the wallpaper has changed. The CREATE is triggered when there is no 112 * wallpaper set and is created for the first time. The CLOSE_WRITE is triggered 113 * everytime the wallpaper is changed. 114 */ 115 private class WallpaperObserver extends FileObserver { 116 117 final WallpaperData mWallpaper; 118 final File mWallpaperDir; 119 final File mWallpaperFile; 120 final File mWallpaperInfoFile; 121 122 public WallpaperObserver(WallpaperData wallpaper) { 123 super(getWallpaperDir(wallpaper.userId).getAbsolutePath(), 124 CLOSE_WRITE | MOVED_TO | DELETE | DELETE_SELF); 125 mWallpaperDir = getWallpaperDir(wallpaper.userId); 126 mWallpaper = wallpaper; 127 mWallpaperFile = new File(mWallpaperDir, WALLPAPER); 128 mWallpaperInfoFile = new File(mWallpaperDir, WALLPAPER_INFO); 129 } 130 131 @Override 132 public void onEvent(int event, String path) { 133 if (path == null) { 134 return; 135 } 136 synchronized (mLock) { 137 File changedFile = new File(mWallpaperDir, path); 138 if (mWallpaperFile.equals(changedFile) 139 || mWallpaperInfoFile.equals(changedFile)) { 140 // changing the wallpaper means we'll need to back up the new one 141 long origId = Binder.clearCallingIdentity(); 142 BackupManager bm = new BackupManager(mContext); 143 bm.dataChanged(); 144 Binder.restoreCallingIdentity(origId); 145 } 146 if (mWallpaperFile.equals(changedFile)) { 147 notifyCallbacksLocked(mWallpaper); 148 final boolean written = (event == CLOSE_WRITE || event == MOVED_TO); 149 if (mWallpaper.wallpaperComponent == null 150 || event != CLOSE_WRITE // includes the MOVED_TO case 151 || mWallpaper.imageWallpaperPending) { 152 if (written) { 153 mWallpaper.imageWallpaperPending = false; 154 } 155 bindWallpaperComponentLocked(mImageWallpaper, true, 156 false, mWallpaper, null); 157 saveSettingsLocked(mWallpaper); 158 } 159 } 160 } 161 } 162 } 163 164 final Context mContext; 165 final IWindowManager mIWindowManager; 166 final IPackageManager mIPackageManager; 167 final MyPackageMonitor mMonitor; 168 final AppOpsManager mAppOpsManager; 169 WallpaperData mLastWallpaper; 170 171 /** 172 * Name of the component used to display bitmap wallpapers from either the gallery or 173 * built-in wallpapers. 174 */ 175 final ComponentName mImageWallpaper; 176 177 SparseArray<WallpaperData> mWallpaperMap = new SparseArray<WallpaperData>(); 178 179 int mCurrentUserId; 180 181 static class WallpaperData { 182 183 int userId; 184 185 File wallpaperFile; 186 187 /** 188 * Client is currently writing a new image wallpaper. 189 */ 190 boolean imageWallpaperPending; 191 192 /** 193 * Resource name if using a picture from the wallpaper gallery 194 */ 195 String name = ""; 196 197 /** 198 * The component name of the currently set live wallpaper. 199 */ 200 ComponentName wallpaperComponent; 201 202 /** 203 * The component name of the wallpaper that should be set next. 204 */ 205 ComponentName nextWallpaperComponent; 206 207 WallpaperConnection connection; 208 long lastDiedTime; 209 boolean wallpaperUpdating; 210 WallpaperObserver wallpaperObserver; 211 212 /** 213 * List of callbacks registered they should each be notified when the wallpaper is changed. 214 */ 215 private RemoteCallbackList<IWallpaperManagerCallback> callbacks 216 = new RemoteCallbackList<IWallpaperManagerCallback>(); 217 218 int width = -1; 219 int height = -1; 220 221 final Rect padding = new Rect(0, 0, 0, 0); 222 223 WallpaperData(int userId) { 224 this.userId = userId; 225 wallpaperFile = new File(getWallpaperDir(userId), WALLPAPER); 226 } 227 } 228 229 class WallpaperConnection extends IWallpaperConnection.Stub 230 implements ServiceConnection { 231 final WallpaperInfo mInfo; 232 final Binder mToken = new Binder(); 233 IWallpaperService mService; 234 IWallpaperEngine mEngine; 235 WallpaperData mWallpaper; 236 IRemoteCallback mReply; 237 238 boolean mDimensionsChanged = false; 239 boolean mPaddingChanged = false; 240 241 public WallpaperConnection(WallpaperInfo info, WallpaperData wallpaper) { 242 mInfo = info; 243 mWallpaper = wallpaper; 244 } 245 246 @Override 247 public void onServiceConnected(ComponentName name, IBinder service) { 248 synchronized (mLock) { 249 if (mWallpaper.connection == this) { 250 mService = IWallpaperService.Stub.asInterface(service); 251 attachServiceLocked(this, mWallpaper); 252 // XXX should probably do saveSettingsLocked() later 253 // when we have an engine, but I'm not sure about 254 // locking there and anyway we always need to be able to 255 // recover if there is something wrong. 256 saveSettingsLocked(mWallpaper); 257 } 258 } 259 } 260 261 @Override 262 public void onServiceDisconnected(ComponentName name) { 263 synchronized (mLock) { 264 mService = null; 265 mEngine = null; 266 if (mWallpaper.connection == this) { 267 Slog.w(TAG, "Wallpaper service gone: " + mWallpaper.wallpaperComponent); 268 if (!mWallpaper.wallpaperUpdating 269 && mWallpaper.userId == mCurrentUserId) { 270 // There is a race condition which causes 271 // {@link #mWallpaper.wallpaperUpdating} to be false even if it is 272 // currently updating since the broadcast notifying us is async. 273 // This race is overcome by the general rule that we only reset the 274 // wallpaper if its service was shut down twice 275 // during {@link #MIN_WALLPAPER_CRASH_TIME} millis. 276 if (mWallpaper.lastDiedTime != 0 277 && mWallpaper.lastDiedTime + MIN_WALLPAPER_CRASH_TIME 278 > SystemClock.uptimeMillis()) { 279 Slog.w(TAG, "Reverting to built-in wallpaper!"); 280 clearWallpaperLocked(true, mWallpaper.userId, null); 281 } else { 282 mWallpaper.lastDiedTime = SystemClock.uptimeMillis(); 283 } 284 final String flattened = name.flattenToString(); 285 EventLog.writeEvent(EventLogTags.WP_WALLPAPER_CRASHED, 286 flattened.substring(0, Math.min(flattened.length(), 287 MAX_WALLPAPER_COMPONENT_LOG_LENGTH))); 288 } 289 } 290 } 291 } 292 293 @Override 294 public void attachEngine(IWallpaperEngine engine) { 295 synchronized (mLock) { 296 mEngine = engine; 297 if (mDimensionsChanged) { 298 try { 299 mEngine.setDesiredSize(mWallpaper.width, mWallpaper.height); 300 } catch (RemoteException e) { 301 Slog.w(TAG, "Failed to set wallpaper dimensions", e); 302 } 303 mDimensionsChanged = false; 304 } 305 if (mPaddingChanged) { 306 try { 307 mEngine.setDisplayPadding(mWallpaper.padding); 308 } catch (RemoteException e) { 309 Slog.w(TAG, "Failed to set wallpaper padding", e); 310 } 311 mPaddingChanged = false; 312 } 313 } 314 } 315 316 @Override 317 public void engineShown(IWallpaperEngine engine) { 318 synchronized (mLock) { 319 if (mReply != null) { 320 long ident = Binder.clearCallingIdentity(); 321 try { 322 mReply.sendResult(null); 323 } catch (RemoteException e) { 324 Binder.restoreCallingIdentity(ident); 325 } 326 mReply = null; 327 } 328 } 329 } 330 331 @Override 332 public ParcelFileDescriptor setWallpaper(String name) { 333 synchronized (mLock) { 334 if (mWallpaper.connection == this) { 335 return updateWallpaperBitmapLocked(name, mWallpaper); 336 } 337 return null; 338 } 339 } 340 } 341 342 class MyPackageMonitor extends PackageMonitor { 343 @Override 344 public void onPackageUpdateFinished(String packageName, int uid) { 345 synchronized (mLock) { 346 if (mCurrentUserId != getChangingUserId()) { 347 return; 348 } 349 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 350 if (wallpaper != null) { 351 if (wallpaper.wallpaperComponent != null 352 && wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 353 wallpaper.wallpaperUpdating = false; 354 ComponentName comp = wallpaper.wallpaperComponent; 355 clearWallpaperComponentLocked(wallpaper); 356 if (!bindWallpaperComponentLocked(comp, false, false, 357 wallpaper, null)) { 358 Slog.w(TAG, "Wallpaper no longer available; reverting to default"); 359 clearWallpaperLocked(false, wallpaper.userId, null); 360 } 361 } 362 } 363 } 364 } 365 366 @Override 367 public void onPackageModified(String packageName) { 368 synchronized (mLock) { 369 if (mCurrentUserId != getChangingUserId()) { 370 return; 371 } 372 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 373 if (wallpaper != null) { 374 if (wallpaper.wallpaperComponent == null 375 || !wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 376 return; 377 } 378 doPackagesChangedLocked(true, wallpaper); 379 } 380 } 381 } 382 383 @Override 384 public void onPackageUpdateStarted(String packageName, int uid) { 385 synchronized (mLock) { 386 if (mCurrentUserId != getChangingUserId()) { 387 return; 388 } 389 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 390 if (wallpaper != null) { 391 if (wallpaper.wallpaperComponent != null 392 && wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 393 wallpaper.wallpaperUpdating = true; 394 } 395 } 396 } 397 } 398 399 @Override 400 public boolean onHandleForceStop(Intent intent, String[] packages, int uid, boolean doit) { 401 synchronized (mLock) { 402 boolean changed = false; 403 if (mCurrentUserId != getChangingUserId()) { 404 return false; 405 } 406 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 407 if (wallpaper != null) { 408 boolean res = doPackagesChangedLocked(doit, wallpaper); 409 changed |= res; 410 } 411 return changed; 412 } 413 } 414 415 @Override 416 public void onSomePackagesChanged() { 417 synchronized (mLock) { 418 if (mCurrentUserId != getChangingUserId()) { 419 return; 420 } 421 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 422 if (wallpaper != null) { 423 doPackagesChangedLocked(true, wallpaper); 424 } 425 } 426 } 427 428 boolean doPackagesChangedLocked(boolean doit, WallpaperData wallpaper) { 429 boolean changed = false; 430 if (wallpaper.wallpaperComponent != null) { 431 int change = isPackageDisappearing(wallpaper.wallpaperComponent 432 .getPackageName()); 433 if (change == PACKAGE_PERMANENT_CHANGE 434 || change == PACKAGE_TEMPORARY_CHANGE) { 435 changed = true; 436 if (doit) { 437 Slog.w(TAG, "Wallpaper uninstalled, removing: " 438 + wallpaper.wallpaperComponent); 439 clearWallpaperLocked(false, wallpaper.userId, null); 440 } 441 } 442 } 443 if (wallpaper.nextWallpaperComponent != null) { 444 int change = isPackageDisappearing(wallpaper.nextWallpaperComponent 445 .getPackageName()); 446 if (change == PACKAGE_PERMANENT_CHANGE 447 || change == PACKAGE_TEMPORARY_CHANGE) { 448 wallpaper.nextWallpaperComponent = null; 449 } 450 } 451 if (wallpaper.wallpaperComponent != null 452 && isPackageModified(wallpaper.wallpaperComponent.getPackageName())) { 453 try { 454 mContext.getPackageManager().getServiceInfo( 455 wallpaper.wallpaperComponent, 0); 456 } catch (NameNotFoundException e) { 457 Slog.w(TAG, "Wallpaper component gone, removing: " 458 + wallpaper.wallpaperComponent); 459 clearWallpaperLocked(false, wallpaper.userId, null); 460 } 461 } 462 if (wallpaper.nextWallpaperComponent != null 463 && isPackageModified(wallpaper.nextWallpaperComponent.getPackageName())) { 464 try { 465 mContext.getPackageManager().getServiceInfo( 466 wallpaper.nextWallpaperComponent, 0); 467 } catch (NameNotFoundException e) { 468 wallpaper.nextWallpaperComponent = null; 469 } 470 } 471 return changed; 472 } 473 } 474 475 public WallpaperManagerService(Context context) { 476 if (DEBUG) Slog.v(TAG, "WallpaperService startup"); 477 mContext = context; 478 mImageWallpaper = ComponentName.unflattenFromString( 479 context.getResources().getString(R.string.image_wallpaper_component)); 480 mIWindowManager = IWindowManager.Stub.asInterface( 481 ServiceManager.getService(Context.WINDOW_SERVICE)); 482 mIPackageManager = AppGlobals.getPackageManager(); 483 mAppOpsManager = (AppOpsManager) mContext.getSystemService(Context.APP_OPS_SERVICE); 484 mMonitor = new MyPackageMonitor(); 485 mMonitor.register(context, null, UserHandle.ALL, true); 486 getWallpaperDir(UserHandle.USER_OWNER).mkdirs(); 487 loadSettingsLocked(UserHandle.USER_OWNER); 488 } 489 490 private static File getWallpaperDir(int userId) { 491 return Environment.getUserSystemDirectory(userId); 492 } 493 494 @Override 495 protected void finalize() throws Throwable { 496 super.finalize(); 497 for (int i = 0; i < mWallpaperMap.size(); i++) { 498 WallpaperData wallpaper = mWallpaperMap.valueAt(i); 499 wallpaper.wallpaperObserver.stopWatching(); 500 } 501 } 502 503 public void systemRunning() { 504 if (DEBUG) Slog.v(TAG, "systemReady"); 505 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.USER_OWNER); 506 switchWallpaper(wallpaper, null); 507 wallpaper.wallpaperObserver = new WallpaperObserver(wallpaper); 508 wallpaper.wallpaperObserver.startWatching(); 509 510 IntentFilter userFilter = new IntentFilter(); 511 userFilter.addAction(Intent.ACTION_USER_REMOVED); 512 userFilter.addAction(Intent.ACTION_USER_STOPPING); 513 mContext.registerReceiver(new BroadcastReceiver() { 514 @Override 515 public void onReceive(Context context, Intent intent) { 516 String action = intent.getAction(); 517 if (Intent.ACTION_USER_REMOVED.equals(action)) { 518 onRemoveUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 519 UserHandle.USER_NULL)); 520 } 521 // TODO: Race condition causing problems when cleaning up on stopping a user. 522 // Comment this out for now. 523 // else if (Intent.ACTION_USER_STOPPING.equals(action)) { 524 // onStoppingUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 525 // UserHandle.USER_NULL)); 526 // } 527 } 528 }, userFilter); 529 530 try { 531 ActivityManagerNative.getDefault().registerUserSwitchObserver( 532 new IUserSwitchObserver.Stub() { 533 @Override 534 public void onUserSwitching(int newUserId, IRemoteCallback reply) { 535 switchUser(newUserId, reply); 536 } 537 538 @Override 539 public void onUserSwitchComplete(int newUserId) throws RemoteException { 540 } 541 542 @Override 543 public void onForegroundProfileSwitch(int newProfileId) { 544 // Ignore. 545 } 546 }); 547 } catch (RemoteException e) { 548 // TODO Auto-generated catch block 549 e.printStackTrace(); 550 } 551 } 552 553 /** Called by SystemBackupAgent */ 554 public String getName() { 555 // Verify caller is the system 556 if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) { 557 throw new RuntimeException("getName() can only be called from the system process"); 558 } 559 synchronized (mLock) { 560 return mWallpaperMap.get(0).name; 561 } 562 } 563 564 void onStoppingUser(int userId) { 565 if (userId < 1) return; 566 synchronized (mLock) { 567 WallpaperData wallpaper = mWallpaperMap.get(userId); 568 if (wallpaper != null) { 569 if (wallpaper.wallpaperObserver != null) { 570 wallpaper.wallpaperObserver.stopWatching(); 571 wallpaper.wallpaperObserver = null; 572 } 573 mWallpaperMap.remove(userId); 574 } 575 } 576 } 577 578 void onRemoveUser(int userId) { 579 if (userId < 1) return; 580 synchronized (mLock) { 581 onStoppingUser(userId); 582 File wallpaperFile = new File(getWallpaperDir(userId), WALLPAPER); 583 wallpaperFile.delete(); 584 File wallpaperInfoFile = new File(getWallpaperDir(userId), WALLPAPER_INFO); 585 wallpaperInfoFile.delete(); 586 } 587 } 588 589 void switchUser(int userId, IRemoteCallback reply) { 590 synchronized (mLock) { 591 mCurrentUserId = userId; 592 WallpaperData wallpaper = getWallpaperSafeLocked(userId); 593 // Not started watching yet, in case wallpaper data was loaded for other reasons. 594 if (wallpaper.wallpaperObserver == null) { 595 wallpaper.wallpaperObserver = new WallpaperObserver(wallpaper); 596 wallpaper.wallpaperObserver.startWatching(); 597 } 598 switchWallpaper(wallpaper, reply); 599 } 600 } 601 602 void switchWallpaper(WallpaperData wallpaper, IRemoteCallback reply) { 603 synchronized (mLock) { 604 RuntimeException e = null; 605 try { 606 ComponentName cname = wallpaper.wallpaperComponent != null ? 607 wallpaper.wallpaperComponent : wallpaper.nextWallpaperComponent; 608 if (bindWallpaperComponentLocked(cname, true, false, wallpaper, reply)) { 609 return; 610 } 611 } catch (RuntimeException e1) { 612 e = e1; 613 } 614 Slog.w(TAG, "Failure starting previous wallpaper", e); 615 clearWallpaperLocked(false, wallpaper.userId, reply); 616 } 617 } 618 619 public void clearWallpaper(String callingPackage) { 620 if (DEBUG) Slog.v(TAG, "clearWallpaper"); 621 checkPermission(android.Manifest.permission.SET_WALLPAPER); 622 if (!isWallpaperSupported(callingPackage)) { 623 return; 624 } 625 synchronized (mLock) { 626 clearWallpaperLocked(false, UserHandle.getCallingUserId(), null); 627 } 628 } 629 630 void clearWallpaperLocked(boolean defaultFailed, int userId, IRemoteCallback reply) { 631 WallpaperData wallpaper = mWallpaperMap.get(userId); 632 if (wallpaper == null) { 633 return; 634 } 635 File f = new File(getWallpaperDir(userId), WALLPAPER); 636 if (f.exists()) { 637 f.delete(); 638 } 639 final long ident = Binder.clearCallingIdentity(); 640 try { 641 RuntimeException e = null; 642 try { 643 wallpaper.imageWallpaperPending = false; 644 if (userId != mCurrentUserId) return; 645 if (bindWallpaperComponentLocked(defaultFailed 646 ? mImageWallpaper 647 : null, true, false, wallpaper, reply)) { 648 return; 649 } 650 } catch (IllegalArgumentException e1) { 651 e = e1; 652 } 653 654 // This can happen if the default wallpaper component doesn't 655 // exist. This should be a system configuration problem, but 656 // let's not let it crash the system and just live with no 657 // wallpaper. 658 Slog.e(TAG, "Default wallpaper component not found!", e); 659 clearWallpaperComponentLocked(wallpaper); 660 if (reply != null) { 661 try { 662 reply.sendResult(null); 663 } catch (RemoteException e1) { 664 } 665 } 666 } finally { 667 Binder.restoreCallingIdentity(ident); 668 } 669 } 670 671 public boolean hasNamedWallpaper(String name) { 672 synchronized (mLock) { 673 List<UserInfo> users; 674 long ident = Binder.clearCallingIdentity(); 675 try { 676 users = ((UserManager) mContext.getSystemService(Context.USER_SERVICE)).getUsers(); 677 } finally { 678 Binder.restoreCallingIdentity(ident); 679 } 680 for (UserInfo user: users) { 681 // ignore managed profiles 682 if (user.isManagedProfile()) { 683 continue; 684 } 685 WallpaperData wd = mWallpaperMap.get(user.id); 686 if (wd == null) { 687 // User hasn't started yet, so load her settings to peek at the wallpaper 688 loadSettingsLocked(user.id); 689 wd = mWallpaperMap.get(user.id); 690 } 691 if (wd != null && name.equals(wd.name)) { 692 return true; 693 } 694 } 695 } 696 return false; 697 } 698 699 private Point getDefaultDisplaySize() { 700 Point p = new Point(); 701 WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE); 702 Display d = wm.getDefaultDisplay(); 703 d.getRealSize(p); 704 return p; 705 } 706 707 public void setDimensionHints(int width, int height, String callingPackage) 708 throws RemoteException { 709 checkPermission(android.Manifest.permission.SET_WALLPAPER_HINTS); 710 if (!isWallpaperSupported(callingPackage)) { 711 return; 712 } 713 synchronized (mLock) { 714 int userId = UserHandle.getCallingUserId(); 715 WallpaperData wallpaper = getWallpaperSafeLocked(userId); 716 if (width <= 0 || height <= 0) { 717 throw new IllegalArgumentException("width and height must be > 0"); 718 } 719 // Make sure it is at least as large as the display. 720 Point displaySize = getDefaultDisplaySize(); 721 width = Math.max(width, displaySize.x); 722 height = Math.max(height, displaySize.y); 723 724 if (width != wallpaper.width || height != wallpaper.height) { 725 wallpaper.width = width; 726 wallpaper.height = height; 727 saveSettingsLocked(wallpaper); 728 if (mCurrentUserId != userId) return; // Don't change the properties now 729 if (wallpaper.connection != null) { 730 if (wallpaper.connection.mEngine != null) { 731 try { 732 wallpaper.connection.mEngine.setDesiredSize( 733 width, height); 734 } catch (RemoteException e) { 735 } 736 notifyCallbacksLocked(wallpaper); 737 } else if (wallpaper.connection.mService != null) { 738 // We've attached to the service but the engine hasn't attached back to us 739 // yet. This means it will be created with the previous dimensions, so we 740 // need to update it to the new dimensions once it attaches. 741 wallpaper.connection.mDimensionsChanged = true; 742 } 743 } 744 } 745 } 746 } 747 748 public int getWidthHint() throws RemoteException { 749 synchronized (mLock) { 750 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.getCallingUserId()); 751 if (wallpaper != null) { 752 return wallpaper.width; 753 } else { 754 return 0; 755 } 756 } 757 } 758 759 public int getHeightHint() throws RemoteException { 760 synchronized (mLock) { 761 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.getCallingUserId()); 762 if (wallpaper != null) { 763 return wallpaper.height; 764 } else { 765 return 0; 766 } 767 } 768 } 769 770 public void setDisplayPadding(Rect padding, String callingPackage) { 771 checkPermission(android.Manifest.permission.SET_WALLPAPER_HINTS); 772 if (!isWallpaperSupported(callingPackage)) { 773 return; 774 } 775 synchronized (mLock) { 776 int userId = UserHandle.getCallingUserId(); 777 WallpaperData wallpaper = getWallpaperSafeLocked(userId); 778 if (padding.left < 0 || padding.top < 0 || padding.right < 0 || padding.bottom < 0) { 779 throw new IllegalArgumentException("padding must be positive: " + padding); 780 } 781 782 if (!padding.equals(wallpaper.padding)) { 783 wallpaper.padding.set(padding); 784 saveSettingsLocked(wallpaper); 785 if (mCurrentUserId != userId) return; // Don't change the properties now 786 if (wallpaper.connection != null) { 787 if (wallpaper.connection.mEngine != null) { 788 try { 789 wallpaper.connection.mEngine.setDisplayPadding(padding); 790 } catch (RemoteException e) { 791 } 792 notifyCallbacksLocked(wallpaper); 793 } else if (wallpaper.connection.mService != null) { 794 // We've attached to the service but the engine hasn't attached back to us 795 // yet. This means it will be created with the previous dimensions, so we 796 // need to update it to the new dimensions once it attaches. 797 wallpaper.connection.mPaddingChanged = true; 798 } 799 } 800 } 801 } 802 } 803 804 public ParcelFileDescriptor getWallpaper(IWallpaperManagerCallback cb, 805 Bundle outParams) { 806 synchronized (mLock) { 807 // This returns the current user's wallpaper, if called by a system service. Else it 808 // returns the wallpaper for the calling user. 809 int callingUid = Binder.getCallingUid(); 810 int wallpaperUserId = 0; 811 if (callingUid == android.os.Process.SYSTEM_UID) { 812 wallpaperUserId = mCurrentUserId; 813 } else { 814 wallpaperUserId = UserHandle.getUserId(callingUid); 815 } 816 WallpaperData wallpaper = mWallpaperMap.get(wallpaperUserId); 817 if (wallpaper == null) { 818 return null; 819 } 820 try { 821 if (outParams != null) { 822 outParams.putInt("width", wallpaper.width); 823 outParams.putInt("height", wallpaper.height); 824 } 825 wallpaper.callbacks.register(cb); 826 File f = new File(getWallpaperDir(wallpaperUserId), WALLPAPER); 827 if (!f.exists()) { 828 return null; 829 } 830 return ParcelFileDescriptor.open(f, MODE_READ_ONLY); 831 } catch (FileNotFoundException e) { 832 /* Shouldn't happen as we check to see if the file exists */ 833 Slog.w(TAG, "Error getting wallpaper", e); 834 } 835 return null; 836 } 837 } 838 839 public WallpaperInfo getWallpaperInfo() { 840 int userId = UserHandle.getCallingUserId(); 841 synchronized (mLock) { 842 WallpaperData wallpaper = mWallpaperMap.get(userId); 843 if (wallpaper != null && wallpaper.connection != null) { 844 return wallpaper.connection.mInfo; 845 } 846 return null; 847 } 848 } 849 850 public ParcelFileDescriptor setWallpaper(String name, String callingPackage) { 851 checkPermission(android.Manifest.permission.SET_WALLPAPER); 852 if (!isWallpaperSupported(callingPackage)) { 853 return null; 854 } 855 synchronized (mLock) { 856 if (DEBUG) Slog.v(TAG, "setWallpaper"); 857 int userId = UserHandle.getCallingUserId(); 858 WallpaperData wallpaper = getWallpaperSafeLocked(userId); 859 final long ident = Binder.clearCallingIdentity(); 860 try { 861 ParcelFileDescriptor pfd = updateWallpaperBitmapLocked(name, wallpaper); 862 if (pfd != null) { 863 wallpaper.imageWallpaperPending = true; 864 } 865 return pfd; 866 } finally { 867 Binder.restoreCallingIdentity(ident); 868 } 869 } 870 } 871 872 ParcelFileDescriptor updateWallpaperBitmapLocked(String name, WallpaperData wallpaper) { 873 if (name == null) name = ""; 874 try { 875 File dir = getWallpaperDir(wallpaper.userId); 876 if (!dir.exists()) { 877 dir.mkdir(); 878 FileUtils.setPermissions( 879 dir.getPath(), 880 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 881 -1, -1); 882 } 883 File file = new File(dir, WALLPAPER); 884 ParcelFileDescriptor fd = ParcelFileDescriptor.open(file, 885 MODE_CREATE|MODE_READ_WRITE|MODE_TRUNCATE); 886 if (!SELinux.restorecon(file)) { 887 return null; 888 } 889 wallpaper.name = name; 890 return fd; 891 } catch (FileNotFoundException e) { 892 Slog.w(TAG, "Error setting wallpaper", e); 893 } 894 return null; 895 } 896 897 public void setWallpaperComponentChecked(ComponentName name, String callingPackage) { 898 if (isWallpaperSupported(callingPackage)) { 899 setWallpaperComponent(name); 900 } 901 } 902 903 // ToDo: Remove this version of the function 904 public void setWallpaperComponent(ComponentName name) { 905 checkPermission(android.Manifest.permission.SET_WALLPAPER_COMPONENT); 906 synchronized (mLock) { 907 if (DEBUG) Slog.v(TAG, "setWallpaperComponent name=" + name); 908 int userId = UserHandle.getCallingUserId(); 909 WallpaperData wallpaper = mWallpaperMap.get(userId); 910 if (wallpaper == null) { 911 throw new IllegalStateException("Wallpaper not yet initialized for user " + userId); 912 } 913 final long ident = Binder.clearCallingIdentity(); 914 try { 915 wallpaper.imageWallpaperPending = false; 916 bindWallpaperComponentLocked(name, false, true, wallpaper, null); 917 } finally { 918 Binder.restoreCallingIdentity(ident); 919 } 920 } 921 } 922 923 boolean bindWallpaperComponentLocked(ComponentName componentName, boolean force, 924 boolean fromUser, WallpaperData wallpaper, IRemoteCallback reply) { 925 if (DEBUG) Slog.v(TAG, "bindWallpaperComponentLocked: componentName=" + componentName); 926 // Has the component changed? 927 if (!force) { 928 if (wallpaper.connection != null) { 929 if (wallpaper.wallpaperComponent == null) { 930 if (componentName == null) { 931 if (DEBUG) Slog.v(TAG, "bindWallpaperComponentLocked: still using default"); 932 // Still using default wallpaper. 933 return true; 934 } 935 } else if (wallpaper.wallpaperComponent.equals(componentName)) { 936 // Changing to same wallpaper. 937 if (DEBUG) Slog.v(TAG, "same wallpaper"); 938 return true; 939 } 940 } 941 } 942 943 try { 944 if (componentName == null) { 945 componentName = WallpaperManager.getDefaultWallpaperComponent(mContext); 946 if (componentName == null) { 947 // Fall back to static image wallpaper 948 componentName = mImageWallpaper; 949 //clearWallpaperComponentLocked(); 950 //return; 951 if (DEBUG) Slog.v(TAG, "Using image wallpaper"); 952 } 953 } 954 int serviceUserId = wallpaper.userId; 955 ServiceInfo si = mIPackageManager.getServiceInfo(componentName, 956 PackageManager.GET_META_DATA | PackageManager.GET_PERMISSIONS, serviceUserId); 957 if (si == null) { 958 // The wallpaper component we're trying to use doesn't exist 959 Slog.w(TAG, "Attempted wallpaper " + componentName + " is unavailable"); 960 return false; 961 } 962 if (!android.Manifest.permission.BIND_WALLPAPER.equals(si.permission)) { 963 String msg = "Selected service does not require " 964 + android.Manifest.permission.BIND_WALLPAPER 965 + ": " + componentName; 966 if (fromUser) { 967 throw new SecurityException(msg); 968 } 969 Slog.w(TAG, msg); 970 return false; 971 } 972 973 WallpaperInfo wi = null; 974 975 Intent intent = new Intent(WallpaperService.SERVICE_INTERFACE); 976 if (componentName != null && !componentName.equals(mImageWallpaper)) { 977 // Make sure the selected service is actually a wallpaper service. 978 List<ResolveInfo> ris = 979 mIPackageManager.queryIntentServices(intent, 980 intent.resolveTypeIfNeeded(mContext.getContentResolver()), 981 PackageManager.GET_META_DATA, serviceUserId); 982 for (int i=0; i<ris.size(); i++) { 983 ServiceInfo rsi = ris.get(i).serviceInfo; 984 if (rsi.name.equals(si.name) && 985 rsi.packageName.equals(si.packageName)) { 986 try { 987 wi = new WallpaperInfo(mContext, ris.get(i)); 988 } catch (XmlPullParserException e) { 989 if (fromUser) { 990 throw new IllegalArgumentException(e); 991 } 992 Slog.w(TAG, e); 993 return false; 994 } catch (IOException e) { 995 if (fromUser) { 996 throw new IllegalArgumentException(e); 997 } 998 Slog.w(TAG, e); 999 return false; 1000 } 1001 break; 1002 } 1003 } 1004 if (wi == null) { 1005 String msg = "Selected service is not a wallpaper: " 1006 + componentName; 1007 if (fromUser) { 1008 throw new SecurityException(msg); 1009 } 1010 Slog.w(TAG, msg); 1011 return false; 1012 } 1013 } 1014 1015 // Bind the service! 1016 if (DEBUG) Slog.v(TAG, "Binding to:" + componentName); 1017 WallpaperConnection newConn = new WallpaperConnection(wi, wallpaper); 1018 intent.setComponent(componentName); 1019 intent.putExtra(Intent.EXTRA_CLIENT_LABEL, 1020 com.android.internal.R.string.wallpaper_binding_label); 1021 intent.putExtra(Intent.EXTRA_CLIENT_INTENT, PendingIntent.getActivityAsUser( 1022 mContext, 0, 1023 Intent.createChooser(new Intent(Intent.ACTION_SET_WALLPAPER), 1024 mContext.getText(com.android.internal.R.string.chooser_wallpaper)), 1025 0, null, new UserHandle(serviceUserId))); 1026 if (!mContext.bindServiceAsUser(intent, newConn, 1027 Context.BIND_AUTO_CREATE | Context.BIND_SHOWING_UI 1028 | Context.BIND_FOREGROUND_SERVICE_WHILE_AWAKE, 1029 new UserHandle(serviceUserId))) { 1030 String msg = "Unable to bind service: " 1031 + componentName; 1032 if (fromUser) { 1033 throw new IllegalArgumentException(msg); 1034 } 1035 Slog.w(TAG, msg); 1036 return false; 1037 } 1038 if (wallpaper.userId == mCurrentUserId && mLastWallpaper != null) { 1039 detachWallpaperLocked(mLastWallpaper); 1040 } 1041 wallpaper.wallpaperComponent = componentName; 1042 wallpaper.connection = newConn; 1043 newConn.mReply = reply; 1044 try { 1045 if (wallpaper.userId == mCurrentUserId) { 1046 if (DEBUG) 1047 Slog.v(TAG, "Adding window token: " + newConn.mToken); 1048 mIWindowManager.addWindowToken(newConn.mToken, 1049 WindowManager.LayoutParams.TYPE_WALLPAPER); 1050 mLastWallpaper = wallpaper; 1051 } 1052 } catch (RemoteException e) { 1053 } 1054 } catch (RemoteException e) { 1055 String msg = "Remote exception for " + componentName + "\n" + e; 1056 if (fromUser) { 1057 throw new IllegalArgumentException(msg); 1058 } 1059 Slog.w(TAG, msg); 1060 return false; 1061 } 1062 return true; 1063 } 1064 1065 void detachWallpaperLocked(WallpaperData wallpaper) { 1066 if (wallpaper.connection != null) { 1067 if (wallpaper.connection.mReply != null) { 1068 try { 1069 wallpaper.connection.mReply.sendResult(null); 1070 } catch (RemoteException e) { 1071 } 1072 wallpaper.connection.mReply = null; 1073 } 1074 if (wallpaper.connection.mEngine != null) { 1075 try { 1076 wallpaper.connection.mEngine.destroy(); 1077 } catch (RemoteException e) { 1078 } 1079 } 1080 mContext.unbindService(wallpaper.connection); 1081 try { 1082 if (DEBUG) 1083 Slog.v(TAG, "Removing window token: " + wallpaper.connection.mToken); 1084 mIWindowManager.removeWindowToken(wallpaper.connection.mToken); 1085 } catch (RemoteException e) { 1086 } 1087 wallpaper.connection.mService = null; 1088 wallpaper.connection.mEngine = null; 1089 wallpaper.connection = null; 1090 } 1091 } 1092 1093 void clearWallpaperComponentLocked(WallpaperData wallpaper) { 1094 wallpaper.wallpaperComponent = null; 1095 detachWallpaperLocked(wallpaper); 1096 } 1097 1098 void attachServiceLocked(WallpaperConnection conn, WallpaperData wallpaper) { 1099 try { 1100 conn.mService.attach(conn, conn.mToken, 1101 WindowManager.LayoutParams.TYPE_WALLPAPER, false, 1102 wallpaper.width, wallpaper.height, wallpaper.padding); 1103 } catch (RemoteException e) { 1104 Slog.w(TAG, "Failed attaching wallpaper; clearing", e); 1105 if (!wallpaper.wallpaperUpdating) { 1106 bindWallpaperComponentLocked(null, false, false, wallpaper, null); 1107 } 1108 } 1109 } 1110 1111 private void notifyCallbacksLocked(WallpaperData wallpaper) { 1112 final int n = wallpaper.callbacks.beginBroadcast(); 1113 for (int i = 0; i < n; i++) { 1114 try { 1115 wallpaper.callbacks.getBroadcastItem(i).onWallpaperChanged(); 1116 } catch (RemoteException e) { 1117 1118 // The RemoteCallbackList will take care of removing 1119 // the dead object for us. 1120 } 1121 } 1122 wallpaper.callbacks.finishBroadcast(); 1123 final Intent intent = new Intent(Intent.ACTION_WALLPAPER_CHANGED); 1124 mContext.sendBroadcastAsUser(intent, new UserHandle(mCurrentUserId)); 1125 } 1126 1127 private void checkPermission(String permission) { 1128 if (PackageManager.PERMISSION_GRANTED!= mContext.checkCallingOrSelfPermission(permission)) { 1129 throw new SecurityException("Access denied to process: " + Binder.getCallingPid() 1130 + ", must have permission " + permission); 1131 } 1132 } 1133 1134 /** 1135 * Certain user types do not support wallpapers (e.g. managed profiles). The check is 1136 * implemented through through the OP_WRITE_WALLPAPER AppOp. 1137 */ 1138 public boolean isWallpaperSupported(String callingPackage) { 1139 return mAppOpsManager.checkOpNoThrow(AppOpsManager.OP_WRITE_WALLPAPER, Binder.getCallingUid(), 1140 callingPackage) == AppOpsManager.MODE_ALLOWED; 1141 } 1142 1143 private static JournaledFile makeJournaledFile(int userId) { 1144 final String base = new File(getWallpaperDir(userId), WALLPAPER_INFO).getAbsolutePath(); 1145 return new JournaledFile(new File(base), new File(base + ".tmp")); 1146 } 1147 1148 private void saveSettingsLocked(WallpaperData wallpaper) { 1149 JournaledFile journal = makeJournaledFile(wallpaper.userId); 1150 FileOutputStream stream = null; 1151 try { 1152 stream = new FileOutputStream(journal.chooseForWrite(), false); 1153 XmlSerializer out = new FastXmlSerializer(); 1154 out.setOutput(stream, "utf-8"); 1155 out.startDocument(null, true); 1156 1157 out.startTag(null, "wp"); 1158 out.attribute(null, "width", Integer.toString(wallpaper.width)); 1159 out.attribute(null, "height", Integer.toString(wallpaper.height)); 1160 if (wallpaper.padding.left != 0) { 1161 out.attribute(null, "paddingLeft", Integer.toString(wallpaper.padding.left)); 1162 } 1163 if (wallpaper.padding.top != 0) { 1164 out.attribute(null, "paddingTop", Integer.toString(wallpaper.padding.top)); 1165 } 1166 if (wallpaper.padding.right != 0) { 1167 out.attribute(null, "paddingRight", Integer.toString(wallpaper.padding.right)); 1168 } 1169 if (wallpaper.padding.bottom != 0) { 1170 out.attribute(null, "paddingBottom", Integer.toString(wallpaper.padding.bottom)); 1171 } 1172 out.attribute(null, "name", wallpaper.name); 1173 if (wallpaper.wallpaperComponent != null 1174 && !wallpaper.wallpaperComponent.equals(mImageWallpaper)) { 1175 out.attribute(null, "component", 1176 wallpaper.wallpaperComponent.flattenToShortString()); 1177 } 1178 out.endTag(null, "wp"); 1179 1180 out.endDocument(); 1181 stream.flush(); 1182 FileUtils.sync(stream); 1183 stream.close(); 1184 journal.commit(); 1185 } catch (IOException e) { 1186 try { 1187 if (stream != null) { 1188 stream.close(); 1189 } 1190 } catch (IOException ex) { 1191 // Ignore 1192 } 1193 journal.rollback(); 1194 } 1195 } 1196 1197 private void migrateFromOld() { 1198 File oldWallpaper = new File(WallpaperBackupHelper.WALLPAPER_IMAGE_KEY); 1199 File oldInfo = new File(WallpaperBackupHelper.WALLPAPER_INFO_KEY); 1200 if (oldWallpaper.exists()) { 1201 File newWallpaper = new File(getWallpaperDir(0), WALLPAPER); 1202 oldWallpaper.renameTo(newWallpaper); 1203 } 1204 if (oldInfo.exists()) { 1205 File newInfo = new File(getWallpaperDir(0), WALLPAPER_INFO); 1206 oldInfo.renameTo(newInfo); 1207 } 1208 } 1209 1210 private int getAttributeInt(XmlPullParser parser, String name, int defValue) { 1211 String value = parser.getAttributeValue(null, name); 1212 if (value == null) { 1213 return defValue; 1214 } 1215 return Integer.parseInt(value); 1216 } 1217 1218 /** 1219 * Sometimes it is expected the wallpaper map may not have a user's data. E.g. This could 1220 * happen during user switch. The async user switch observer may not have received 1221 * the event yet. We use this safe method when we don't care about this ordering and just 1222 * want to update the data. The data is going to be applied when the user switch observer 1223 * is eventually executed. 1224 */ 1225 private WallpaperData getWallpaperSafeLocked(int userId) { 1226 WallpaperData wallpaper = mWallpaperMap.get(userId); 1227 if (wallpaper == null) { 1228 loadSettingsLocked(userId); 1229 wallpaper = mWallpaperMap.get(userId); 1230 } 1231 return wallpaper; 1232 } 1233 1234 private void loadSettingsLocked(int userId) { 1235 if (DEBUG) Slog.v(TAG, "loadSettingsLocked"); 1236 1237 JournaledFile journal = makeJournaledFile(userId); 1238 FileInputStream stream = null; 1239 File file = journal.chooseForRead(); 1240 if (!file.exists()) { 1241 // This should only happen one time, when upgrading from a legacy system 1242 migrateFromOld(); 1243 } 1244 WallpaperData wallpaper = mWallpaperMap.get(userId); 1245 if (wallpaper == null) { 1246 wallpaper = new WallpaperData(userId); 1247 mWallpaperMap.put(userId, wallpaper); 1248 } 1249 boolean success = false; 1250 try { 1251 stream = new FileInputStream(file); 1252 XmlPullParser parser = Xml.newPullParser(); 1253 parser.setInput(stream, null); 1254 1255 int type; 1256 do { 1257 type = parser.next(); 1258 if (type == XmlPullParser.START_TAG) { 1259 String tag = parser.getName(); 1260 if ("wp".equals(tag)) { 1261 wallpaper.width = Integer.parseInt(parser.getAttributeValue(null, "width")); 1262 wallpaper.height = Integer.parseInt(parser 1263 .getAttributeValue(null, "height")); 1264 wallpaper.padding.left = getAttributeInt(parser, "paddingLeft", 0); 1265 wallpaper.padding.top = getAttributeInt(parser, "paddingTop", 0); 1266 wallpaper.padding.right = getAttributeInt(parser, "paddingRight", 0); 1267 wallpaper.padding.bottom = getAttributeInt(parser, "paddingBottom", 0); 1268 wallpaper.name = parser.getAttributeValue(null, "name"); 1269 String comp = parser.getAttributeValue(null, "component"); 1270 wallpaper.nextWallpaperComponent = comp != null 1271 ? ComponentName.unflattenFromString(comp) 1272 : null; 1273 if (wallpaper.nextWallpaperComponent == null 1274 || "android".equals(wallpaper.nextWallpaperComponent 1275 .getPackageName())) { 1276 wallpaper.nextWallpaperComponent = mImageWallpaper; 1277 } 1278 1279 if (DEBUG) { 1280 Slog.v(TAG, "mWidth:" + wallpaper.width); 1281 Slog.v(TAG, "mHeight:" + wallpaper.height); 1282 Slog.v(TAG, "mName:" + wallpaper.name); 1283 Slog.v(TAG, "mNextWallpaperComponent:" 1284 + wallpaper.nextWallpaperComponent); 1285 } 1286 } 1287 } 1288 } while (type != XmlPullParser.END_DOCUMENT); 1289 success = true; 1290 } catch (FileNotFoundException e) { 1291 Slog.w(TAG, "no current wallpaper -- first boot?"); 1292 } catch (NullPointerException e) { 1293 Slog.w(TAG, "failed parsing " + file + " " + e); 1294 } catch (NumberFormatException e) { 1295 Slog.w(TAG, "failed parsing " + file + " " + e); 1296 } catch (XmlPullParserException e) { 1297 Slog.w(TAG, "failed parsing " + file + " " + e); 1298 } catch (IOException e) { 1299 Slog.w(TAG, "failed parsing " + file + " " + e); 1300 } catch (IndexOutOfBoundsException e) { 1301 Slog.w(TAG, "failed parsing " + file + " " + e); 1302 } 1303 try { 1304 if (stream != null) { 1305 stream.close(); 1306 } 1307 } catch (IOException e) { 1308 // Ignore 1309 } 1310 1311 if (!success) { 1312 wallpaper.width = -1; 1313 wallpaper.height = -1; 1314 wallpaper.padding.set(0, 0, 0, 0); 1315 wallpaper.name = ""; 1316 } 1317 1318 // We always want to have some reasonable width hint. 1319 int baseSize = getMaximumSizeDimension(); 1320 if (wallpaper.width < baseSize) { 1321 wallpaper.width = baseSize; 1322 } 1323 if (wallpaper.height < baseSize) { 1324 wallpaper.height = baseSize; 1325 } 1326 } 1327 1328 private int getMaximumSizeDimension() { 1329 WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE); 1330 Display d = wm.getDefaultDisplay(); 1331 return d.getMaximumSizeDimension(); 1332 } 1333 1334 // Called by SystemBackupAgent after files are restored to disk. 1335 public void settingsRestored() { 1336 // Verify caller is the system 1337 if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) { 1338 throw new RuntimeException("settingsRestored() can only be called from the system process"); 1339 } 1340 // TODO: If necessary, make it work for secondary users as well. This currently assumes 1341 // restores only to the primary user 1342 if (DEBUG) Slog.v(TAG, "settingsRestored"); 1343 WallpaperData wallpaper = null; 1344 boolean success = false; 1345 synchronized (mLock) { 1346 loadSettingsLocked(0); 1347 wallpaper = mWallpaperMap.get(0); 1348 if (wallpaper.nextWallpaperComponent != null 1349 && !wallpaper.nextWallpaperComponent.equals(mImageWallpaper)) { 1350 if (!bindWallpaperComponentLocked(wallpaper.nextWallpaperComponent, false, false, 1351 wallpaper, null)) { 1352 // No such live wallpaper or other failure; fall back to the default 1353 // live wallpaper (since the profile being restored indicated that the 1354 // user had selected a live rather than static one). 1355 bindWallpaperComponentLocked(null, false, false, wallpaper, null); 1356 } 1357 success = true; 1358 } else { 1359 // If there's a wallpaper name, we use that. If that can't be loaded, then we 1360 // use the default. 1361 if ("".equals(wallpaper.name)) { 1362 if (DEBUG) Slog.v(TAG, "settingsRestored: name is empty"); 1363 success = true; 1364 } else { 1365 if (DEBUG) Slog.v(TAG, "settingsRestored: attempting to restore named resource"); 1366 success = restoreNamedResourceLocked(wallpaper); 1367 } 1368 if (DEBUG) Slog.v(TAG, "settingsRestored: success=" + success); 1369 if (success) { 1370 bindWallpaperComponentLocked(wallpaper.nextWallpaperComponent, false, false, 1371 wallpaper, null); 1372 } 1373 } 1374 } 1375 1376 if (!success) { 1377 Slog.e(TAG, "Failed to restore wallpaper: '" + wallpaper.name + "'"); 1378 wallpaper.name = ""; 1379 getWallpaperDir(0).delete(); 1380 } 1381 1382 synchronized (mLock) { 1383 saveSettingsLocked(wallpaper); 1384 } 1385 } 1386 1387 boolean restoreNamedResourceLocked(WallpaperData wallpaper) { 1388 if (wallpaper.name.length() > 4 && "res:".equals(wallpaper.name.substring(0, 4))) { 1389 String resName = wallpaper.name.substring(4); 1390 1391 String pkg = null; 1392 int colon = resName.indexOf(':'); 1393 if (colon > 0) { 1394 pkg = resName.substring(0, colon); 1395 } 1396 1397 String ident = null; 1398 int slash = resName.lastIndexOf('/'); 1399 if (slash > 0) { 1400 ident = resName.substring(slash+1); 1401 } 1402 1403 String type = null; 1404 if (colon > 0 && slash > 0 && (slash-colon) > 1) { 1405 type = resName.substring(colon+1, slash); 1406 } 1407 1408 if (pkg != null && ident != null && type != null) { 1409 int resId = -1; 1410 InputStream res = null; 1411 FileOutputStream fos = null; 1412 try { 1413 Context c = mContext.createPackageContext(pkg, Context.CONTEXT_RESTRICTED); 1414 Resources r = c.getResources(); 1415 resId = r.getIdentifier(resName, null, null); 1416 if (resId == 0) { 1417 Slog.e(TAG, "couldn't resolve identifier pkg=" + pkg + " type=" + type 1418 + " ident=" + ident); 1419 return false; 1420 } 1421 1422 res = r.openRawResource(resId); 1423 if (wallpaper.wallpaperFile.exists()) { 1424 wallpaper.wallpaperFile.delete(); 1425 } 1426 fos = new FileOutputStream(wallpaper.wallpaperFile); 1427 1428 byte[] buffer = new byte[32768]; 1429 int amt; 1430 while ((amt=res.read(buffer)) > 0) { 1431 fos.write(buffer, 0, amt); 1432 } 1433 // mWallpaperObserver will notice the close and send the change broadcast 1434 1435 Slog.v(TAG, "Restored wallpaper: " + resName); 1436 return true; 1437 } catch (NameNotFoundException e) { 1438 Slog.e(TAG, "Package name " + pkg + " not found"); 1439 } catch (Resources.NotFoundException e) { 1440 Slog.e(TAG, "Resource not found: " + resId); 1441 } catch (IOException e) { 1442 Slog.e(TAG, "IOException while restoring wallpaper ", e); 1443 } finally { 1444 if (res != null) { 1445 try { 1446 res.close(); 1447 } catch (IOException ex) {} 1448 } 1449 if (fos != null) { 1450 FileUtils.sync(fos); 1451 try { 1452 fos.close(); 1453 } catch (IOException ex) {} 1454 } 1455 } 1456 } 1457 } 1458 return false; 1459 } 1460 1461 @Override 1462 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 1463 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 1464 != PackageManager.PERMISSION_GRANTED) { 1465 1466 pw.println("Permission Denial: can't dump wallpaper service from from pid=" 1467 + Binder.getCallingPid() 1468 + ", uid=" + Binder.getCallingUid()); 1469 return; 1470 } 1471 1472 synchronized (mLock) { 1473 pw.println("Current Wallpaper Service state:"); 1474 for (int i = 0; i < mWallpaperMap.size(); i++) { 1475 WallpaperData wallpaper = mWallpaperMap.valueAt(i); 1476 pw.println(" User " + wallpaper.userId + ":"); 1477 pw.print(" mWidth="); 1478 pw.print(wallpaper.width); 1479 pw.print(" mHeight="); 1480 pw.println(wallpaper.height); 1481 pw.print(" mPadding="); pw.println(wallpaper.padding); 1482 pw.print(" mName="); pw.println(wallpaper.name); 1483 pw.print(" mWallpaperComponent="); pw.println(wallpaper.wallpaperComponent); 1484 if (wallpaper.connection != null) { 1485 WallpaperConnection conn = wallpaper.connection; 1486 pw.print(" Wallpaper connection "); 1487 pw.print(conn); 1488 pw.println(":"); 1489 if (conn.mInfo != null) { 1490 pw.print(" mInfo.component="); 1491 pw.println(conn.mInfo.getComponent()); 1492 } 1493 pw.print(" mToken="); 1494 pw.println(conn.mToken); 1495 pw.print(" mService="); 1496 pw.println(conn.mService); 1497 pw.print(" mEngine="); 1498 pw.println(conn.mEngine); 1499 pw.print(" mLastDiedTime="); 1500 pw.println(wallpaper.lastDiedTime - SystemClock.uptimeMillis()); 1501 } 1502 } 1503 } 1504 } 1505} 1506