WallpaperManagerService.java revision 067e5f68b9216b233df1c6529db182ff9b2887ab
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.IUserSwitchObserver; 24import android.app.IWallpaperManager; 25import android.app.IWallpaperManagerCallback; 26import android.app.PendingIntent; 27import android.app.WallpaperInfo; 28import android.app.WallpaperManager; 29import android.app.backup.BackupManager; 30import android.app.backup.WallpaperBackupHelper; 31import android.content.BroadcastReceiver; 32import android.content.ComponentName; 33import android.content.Context; 34import android.content.Intent; 35import android.content.IntentFilter; 36import android.content.ServiceConnection; 37import android.content.pm.IPackageManager; 38import android.content.pm.PackageManager; 39import android.content.pm.ResolveInfo; 40import android.content.pm.ServiceInfo; 41import android.content.pm.PackageManager.NameNotFoundException; 42import android.content.pm.UserInfo; 43import android.content.res.Resources; 44import android.graphics.Point; 45import android.graphics.Rect; 46import android.os.Binder; 47import android.os.Bundle; 48import android.os.Environment; 49import android.os.FileUtils; 50import android.os.IBinder; 51import android.os.IRemoteCallback; 52import android.os.RemoteException; 53import android.os.FileObserver; 54import android.os.ParcelFileDescriptor; 55import android.os.RemoteCallbackList; 56import android.os.SELinux; 57import android.os.ServiceManager; 58import android.os.SystemClock; 59import android.os.UserHandle; 60import android.os.UserManager; 61import android.service.wallpaper.IWallpaperConnection; 62import android.service.wallpaper.IWallpaperEngine; 63import android.service.wallpaper.IWallpaperService; 64import android.service.wallpaper.WallpaperService; 65import android.util.Slog; 66import android.util.SparseArray; 67import android.util.Xml; 68import android.view.Display; 69import android.view.IWindowManager; 70import android.view.WindowManager; 71 72import java.io.FileDescriptor; 73import java.io.IOException; 74import java.io.InputStream; 75import java.io.File; 76import java.io.FileNotFoundException; 77import java.io.FileInputStream; 78import java.io.FileOutputStream; 79import java.io.PrintWriter; 80import java.util.List; 81 82import org.xmlpull.v1.XmlPullParser; 83import org.xmlpull.v1.XmlPullParserException; 84import org.xmlpull.v1.XmlSerializer; 85 86import com.android.internal.content.PackageMonitor; 87import com.android.internal.util.FastXmlSerializer; 88import com.android.internal.util.JournaledFile; 89import com.android.internal.R; 90 91public class WallpaperManagerService extends IWallpaperManager.Stub { 92 static final String TAG = "WallpaperManagerService"; 93 static final boolean DEBUG = false; 94 95 final Object mLock = new Object[0]; 96 97 /** 98 * Minimum time between crashes of a wallpaper service for us to consider 99 * restarting it vs. just reverting to the static wallpaper. 100 */ 101 static final long MIN_WALLPAPER_CRASH_TIME = 10000; 102 static final String WALLPAPER = "wallpaper"; 103 static final String WALLPAPER_INFO = "wallpaper_info.xml"; 104 105 /** 106 * Observes the wallpaper for changes and notifies all IWallpaperServiceCallbacks 107 * that the wallpaper has changed. The CREATE is triggered when there is no 108 * wallpaper set and is created for the first time. The CLOSE_WRITE is triggered 109 * everytime the wallpaper is changed. 110 */ 111 private class WallpaperObserver extends FileObserver { 112 113 final WallpaperData mWallpaper; 114 final File mWallpaperDir; 115 final File mWallpaperFile; 116 117 public WallpaperObserver(WallpaperData wallpaper) { 118 super(getWallpaperDir(wallpaper.userId).getAbsolutePath(), 119 CLOSE_WRITE | DELETE | DELETE_SELF); 120 mWallpaperDir = getWallpaperDir(wallpaper.userId); 121 mWallpaper = wallpaper; 122 mWallpaperFile = new File(mWallpaperDir, WALLPAPER); 123 } 124 125 @Override 126 public void onEvent(int event, String path) { 127 if (path == null) { 128 return; 129 } 130 synchronized (mLock) { 131 // changing the wallpaper means we'll need to back up the new one 132 long origId = Binder.clearCallingIdentity(); 133 BackupManager bm = new BackupManager(mContext); 134 bm.dataChanged(); 135 Binder.restoreCallingIdentity(origId); 136 137 File changedFile = new File(mWallpaperDir, path); 138 if (mWallpaperFile.equals(changedFile)) { 139 notifyCallbacksLocked(mWallpaper); 140 if (mWallpaper.wallpaperComponent == null || event != CLOSE_WRITE 141 || mWallpaper.imageWallpaperPending) { 142 if (event == CLOSE_WRITE) { 143 mWallpaper.imageWallpaperPending = false; 144 } 145 bindWallpaperComponentLocked(mImageWallpaper, true, 146 false, mWallpaper, null); 147 saveSettingsLocked(mWallpaper); 148 } 149 } 150 } 151 } 152 } 153 154 final Context mContext; 155 final IWindowManager mIWindowManager; 156 final IPackageManager mIPackageManager; 157 final MyPackageMonitor mMonitor; 158 WallpaperData mLastWallpaper; 159 160 /** 161 * Name of the component used to display bitmap wallpapers from either the gallery or 162 * built-in wallpapers. 163 */ 164 final ComponentName mImageWallpaper; 165 166 SparseArray<WallpaperData> mWallpaperMap = new SparseArray<WallpaperData>(); 167 168 int mCurrentUserId; 169 170 static class WallpaperData { 171 172 int userId; 173 174 File wallpaperFile; 175 176 /** 177 * Client is currently writing a new image wallpaper. 178 */ 179 boolean imageWallpaperPending; 180 181 /** 182 * Resource name if using a picture from the wallpaper gallery 183 */ 184 String name = ""; 185 186 /** 187 * The component name of the currently set live wallpaper. 188 */ 189 ComponentName wallpaperComponent; 190 191 /** 192 * The component name of the wallpaper that should be set next. 193 */ 194 ComponentName nextWallpaperComponent; 195 196 WallpaperConnection connection; 197 long lastDiedTime; 198 boolean wallpaperUpdating; 199 WallpaperObserver wallpaperObserver; 200 201 /** 202 * List of callbacks registered they should each be notified when the wallpaper is changed. 203 */ 204 private RemoteCallbackList<IWallpaperManagerCallback> callbacks 205 = new RemoteCallbackList<IWallpaperManagerCallback>(); 206 207 int width = -1; 208 int height = -1; 209 210 final Rect padding = new Rect(0, 0, 0, 0); 211 212 WallpaperData(int userId) { 213 this.userId = userId; 214 wallpaperFile = new File(getWallpaperDir(userId), WALLPAPER); 215 } 216 } 217 218 class WallpaperConnection extends IWallpaperConnection.Stub 219 implements ServiceConnection { 220 final WallpaperInfo mInfo; 221 final Binder mToken = new Binder(); 222 IWallpaperService mService; 223 IWallpaperEngine mEngine; 224 WallpaperData mWallpaper; 225 IRemoteCallback mReply; 226 227 boolean mDimensionsChanged = false; 228 boolean mPaddingChanged = false; 229 230 public WallpaperConnection(WallpaperInfo info, WallpaperData wallpaper) { 231 mInfo = info; 232 mWallpaper = wallpaper; 233 } 234 235 @Override 236 public void onServiceConnected(ComponentName name, IBinder service) { 237 synchronized (mLock) { 238 if (mWallpaper.connection == this) { 239 mService = IWallpaperService.Stub.asInterface(service); 240 attachServiceLocked(this, mWallpaper); 241 // XXX should probably do saveSettingsLocked() later 242 // when we have an engine, but I'm not sure about 243 // locking there and anyway we always need to be able to 244 // recover if there is something wrong. 245 saveSettingsLocked(mWallpaper); 246 } 247 } 248 } 249 250 @Override 251 public void onServiceDisconnected(ComponentName name) { 252 synchronized (mLock) { 253 mService = null; 254 mEngine = null; 255 if (mWallpaper.connection == this) { 256 Slog.w(TAG, "Wallpaper service gone: " + mWallpaper.wallpaperComponent); 257 if (!mWallpaper.wallpaperUpdating 258 && mWallpaper.userId == mCurrentUserId) { 259 // There is a race condition which causes 260 // {@link #mWallpaper.wallpaperUpdating} to be false even if it is 261 // currently updating since the broadcast notifying us is async. 262 // This race is overcome by the general rule that we only reset the 263 // wallpaper if its service was shut down twice 264 // during {@link #MIN_WALLPAPER_CRASH_TIME} millis. 265 if (mWallpaper.lastDiedTime != 0 266 && mWallpaper.lastDiedTime + MIN_WALLPAPER_CRASH_TIME 267 > SystemClock.uptimeMillis()) { 268 Slog.w(TAG, "Reverting to built-in wallpaper!"); 269 clearWallpaperLocked(true, mWallpaper.userId, null); 270 } else { 271 mWallpaper.lastDiedTime = SystemClock.uptimeMillis(); 272 } 273 } 274 } 275 } 276 } 277 278 @Override 279 public void attachEngine(IWallpaperEngine engine) { 280 synchronized (mLock) { 281 mEngine = engine; 282 if (mDimensionsChanged) { 283 try { 284 mEngine.setDesiredSize(mWallpaper.width, mWallpaper.height); 285 } catch (RemoteException e) { 286 Slog.w(TAG, "Failed to set wallpaper dimensions", e); 287 } 288 mDimensionsChanged = false; 289 } 290 if (mPaddingChanged) { 291 try { 292 mEngine.setDisplayPadding(mWallpaper.padding); 293 } catch (RemoteException e) { 294 Slog.w(TAG, "Failed to set wallpaper padding", e); 295 } 296 mPaddingChanged = false; 297 } 298 } 299 } 300 301 @Override 302 public void engineShown(IWallpaperEngine engine) { 303 synchronized (mLock) { 304 if (mReply != null) { 305 long ident = Binder.clearCallingIdentity(); 306 try { 307 mReply.sendResult(null); 308 } catch (RemoteException e) { 309 Binder.restoreCallingIdentity(ident); 310 } 311 mReply = null; 312 } 313 } 314 } 315 316 @Override 317 public ParcelFileDescriptor setWallpaper(String name) { 318 synchronized (mLock) { 319 if (mWallpaper.connection == this) { 320 return updateWallpaperBitmapLocked(name, mWallpaper); 321 } 322 return null; 323 } 324 } 325 } 326 327 class MyPackageMonitor extends PackageMonitor { 328 @Override 329 public void onPackageUpdateFinished(String packageName, int uid) { 330 synchronized (mLock) { 331 if (mCurrentUserId != getChangingUserId()) { 332 return; 333 } 334 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 335 if (wallpaper != null) { 336 if (wallpaper.wallpaperComponent != null 337 && wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 338 wallpaper.wallpaperUpdating = false; 339 ComponentName comp = wallpaper.wallpaperComponent; 340 clearWallpaperComponentLocked(wallpaper); 341 if (!bindWallpaperComponentLocked(comp, false, false, 342 wallpaper, null)) { 343 Slog.w(TAG, "Wallpaper no longer available; reverting to default"); 344 clearWallpaperLocked(false, wallpaper.userId, null); 345 } 346 } 347 } 348 } 349 } 350 351 @Override 352 public void onPackageModified(String packageName) { 353 synchronized (mLock) { 354 if (mCurrentUserId != getChangingUserId()) { 355 return; 356 } 357 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 358 if (wallpaper != null) { 359 if (wallpaper.wallpaperComponent == null 360 || !wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 361 return; 362 } 363 doPackagesChangedLocked(true, wallpaper); 364 } 365 } 366 } 367 368 @Override 369 public void onPackageUpdateStarted(String packageName, int uid) { 370 synchronized (mLock) { 371 if (mCurrentUserId != getChangingUserId()) { 372 return; 373 } 374 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 375 if (wallpaper != null) { 376 if (wallpaper.wallpaperComponent != null 377 && wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 378 wallpaper.wallpaperUpdating = true; 379 } 380 } 381 } 382 } 383 384 @Override 385 public boolean onHandleForceStop(Intent intent, String[] packages, int uid, boolean doit) { 386 synchronized (mLock) { 387 boolean changed = false; 388 if (mCurrentUserId != getChangingUserId()) { 389 return false; 390 } 391 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 392 if (wallpaper != null) { 393 boolean res = doPackagesChangedLocked(doit, wallpaper); 394 changed |= res; 395 } 396 return changed; 397 } 398 } 399 400 @Override 401 public void onSomePackagesChanged() { 402 synchronized (mLock) { 403 if (mCurrentUserId != getChangingUserId()) { 404 return; 405 } 406 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 407 if (wallpaper != null) { 408 doPackagesChangedLocked(true, wallpaper); 409 } 410 } 411 } 412 413 boolean doPackagesChangedLocked(boolean doit, WallpaperData wallpaper) { 414 boolean changed = false; 415 if (wallpaper.wallpaperComponent != null) { 416 int change = isPackageDisappearing(wallpaper.wallpaperComponent 417 .getPackageName()); 418 if (change == PACKAGE_PERMANENT_CHANGE 419 || change == PACKAGE_TEMPORARY_CHANGE) { 420 changed = true; 421 if (doit) { 422 Slog.w(TAG, "Wallpaper uninstalled, removing: " 423 + wallpaper.wallpaperComponent); 424 clearWallpaperLocked(false, wallpaper.userId, null); 425 } 426 } 427 } 428 if (wallpaper.nextWallpaperComponent != null) { 429 int change = isPackageDisappearing(wallpaper.nextWallpaperComponent 430 .getPackageName()); 431 if (change == PACKAGE_PERMANENT_CHANGE 432 || change == PACKAGE_TEMPORARY_CHANGE) { 433 wallpaper.nextWallpaperComponent = null; 434 } 435 } 436 if (wallpaper.wallpaperComponent != null 437 && isPackageModified(wallpaper.wallpaperComponent.getPackageName())) { 438 try { 439 mContext.getPackageManager().getServiceInfo( 440 wallpaper.wallpaperComponent, 0); 441 } catch (NameNotFoundException e) { 442 Slog.w(TAG, "Wallpaper component gone, removing: " 443 + wallpaper.wallpaperComponent); 444 clearWallpaperLocked(false, wallpaper.userId, null); 445 } 446 } 447 if (wallpaper.nextWallpaperComponent != null 448 && isPackageModified(wallpaper.nextWallpaperComponent.getPackageName())) { 449 try { 450 mContext.getPackageManager().getServiceInfo( 451 wallpaper.nextWallpaperComponent, 0); 452 } catch (NameNotFoundException e) { 453 wallpaper.nextWallpaperComponent = null; 454 } 455 } 456 return changed; 457 } 458 } 459 460 public WallpaperManagerService(Context context) { 461 if (DEBUG) Slog.v(TAG, "WallpaperService startup"); 462 mContext = context; 463 mImageWallpaper = ComponentName.unflattenFromString( 464 context.getResources().getString(R.string.image_wallpaper_component)); 465 mIWindowManager = IWindowManager.Stub.asInterface( 466 ServiceManager.getService(Context.WINDOW_SERVICE)); 467 mIPackageManager = AppGlobals.getPackageManager(); 468 mMonitor = new MyPackageMonitor(); 469 mMonitor.register(context, null, UserHandle.ALL, true); 470 getWallpaperDir(UserHandle.USER_OWNER).mkdirs(); 471 loadSettingsLocked(UserHandle.USER_OWNER); 472 } 473 474 private static File getWallpaperDir(int userId) { 475 return Environment.getUserSystemDirectory(userId); 476 } 477 478 @Override 479 protected void finalize() throws Throwable { 480 super.finalize(); 481 for (int i = 0; i < mWallpaperMap.size(); i++) { 482 WallpaperData wallpaper = mWallpaperMap.valueAt(i); 483 wallpaper.wallpaperObserver.stopWatching(); 484 } 485 } 486 487 public void systemRunning() { 488 if (DEBUG) Slog.v(TAG, "systemReady"); 489 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.USER_OWNER); 490 switchWallpaper(wallpaper, null); 491 wallpaper.wallpaperObserver = new WallpaperObserver(wallpaper); 492 wallpaper.wallpaperObserver.startWatching(); 493 494 IntentFilter userFilter = new IntentFilter(); 495 userFilter.addAction(Intent.ACTION_USER_REMOVED); 496 userFilter.addAction(Intent.ACTION_USER_STOPPING); 497 mContext.registerReceiver(new BroadcastReceiver() { 498 @Override 499 public void onReceive(Context context, Intent intent) { 500 String action = intent.getAction(); 501 if (Intent.ACTION_USER_REMOVED.equals(action)) { 502 onRemoveUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 503 UserHandle.USER_NULL)); 504 } 505 // TODO: Race condition causing problems when cleaning up on stopping a user. 506 // Comment this out for now. 507 // else if (Intent.ACTION_USER_STOPPING.equals(action)) { 508 // onStoppingUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 509 // UserHandle.USER_NULL)); 510 // } 511 } 512 }, userFilter); 513 514 try { 515 ActivityManagerNative.getDefault().registerUserSwitchObserver( 516 new IUserSwitchObserver.Stub() { 517 @Override 518 public void onUserSwitching(int newUserId, IRemoteCallback reply) { 519 switchUser(newUserId, reply); 520 } 521 522 @Override 523 public void onUserSwitchComplete(int newUserId) throws RemoteException { 524 } 525 }); 526 } catch (RemoteException e) { 527 // TODO Auto-generated catch block 528 e.printStackTrace(); 529 } 530 } 531 532 /** Called by SystemBackupAgent */ 533 public String getName() { 534 // Verify caller is the system 535 if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) { 536 throw new RuntimeException("getName() can only be called from the system process"); 537 } 538 synchronized (mLock) { 539 return mWallpaperMap.get(0).name; 540 } 541 } 542 543 void onStoppingUser(int userId) { 544 if (userId < 1) return; 545 synchronized (mLock) { 546 WallpaperData wallpaper = mWallpaperMap.get(userId); 547 if (wallpaper != null) { 548 if (wallpaper.wallpaperObserver != null) { 549 wallpaper.wallpaperObserver.stopWatching(); 550 wallpaper.wallpaperObserver = null; 551 } 552 mWallpaperMap.remove(userId); 553 } 554 } 555 } 556 557 void onRemoveUser(int userId) { 558 if (userId < 1) return; 559 synchronized (mLock) { 560 onStoppingUser(userId); 561 File wallpaperFile = new File(getWallpaperDir(userId), WALLPAPER); 562 wallpaperFile.delete(); 563 File wallpaperInfoFile = new File(getWallpaperDir(userId), WALLPAPER_INFO); 564 wallpaperInfoFile.delete(); 565 } 566 } 567 568 void switchUser(int userId, IRemoteCallback reply) { 569 synchronized (mLock) { 570 mCurrentUserId = userId; 571 WallpaperData wallpaper = mWallpaperMap.get(userId); 572 if (wallpaper == null) { 573 wallpaper = new WallpaperData(userId); 574 mWallpaperMap.put(userId, wallpaper); 575 loadSettingsLocked(userId); 576 } 577 // Not started watching yet, in case wallpaper data was loaded for other reasons. 578 if (wallpaper.wallpaperObserver == null) { 579 wallpaper.wallpaperObserver = new WallpaperObserver(wallpaper); 580 wallpaper.wallpaperObserver.startWatching(); 581 } 582 switchWallpaper(wallpaper, reply); 583 } 584 } 585 586 void switchWallpaper(WallpaperData wallpaper, IRemoteCallback reply) { 587 synchronized (mLock) { 588 RuntimeException e = null; 589 try { 590 ComponentName cname = wallpaper.wallpaperComponent != null ? 591 wallpaper.wallpaperComponent : wallpaper.nextWallpaperComponent; 592 if (bindWallpaperComponentLocked(cname, true, false, wallpaper, reply)) { 593 return; 594 } 595 } catch (RuntimeException e1) { 596 e = e1; 597 } 598 Slog.w(TAG, "Failure starting previous wallpaper", e); 599 clearWallpaperLocked(false, wallpaper.userId, reply); 600 } 601 } 602 603 public void clearWallpaper() { 604 if (DEBUG) Slog.v(TAG, "clearWallpaper"); 605 synchronized (mLock) { 606 clearWallpaperLocked(false, UserHandle.getCallingUserId(), null); 607 } 608 } 609 610 void clearWallpaperLocked(boolean defaultFailed, int userId, IRemoteCallback reply) { 611 WallpaperData wallpaper = mWallpaperMap.get(userId); 612 File f = new File(getWallpaperDir(userId), WALLPAPER); 613 if (f.exists()) { 614 f.delete(); 615 } 616 final long ident = Binder.clearCallingIdentity(); 617 try { 618 RuntimeException e = null; 619 try { 620 wallpaper.imageWallpaperPending = false; 621 if (userId != mCurrentUserId) return; 622 if (bindWallpaperComponentLocked(defaultFailed 623 ? mImageWallpaper 624 : null, true, false, wallpaper, reply)) { 625 return; 626 } 627 } catch (IllegalArgumentException e1) { 628 e = e1; 629 } 630 631 // This can happen if the default wallpaper component doesn't 632 // exist. This should be a system configuration problem, but 633 // let's not let it crash the system and just live with no 634 // wallpaper. 635 Slog.e(TAG, "Default wallpaper component not found!", e); 636 clearWallpaperComponentLocked(wallpaper); 637 if (reply != null) { 638 try { 639 reply.sendResult(null); 640 } catch (RemoteException e1) { 641 } 642 } 643 } finally { 644 Binder.restoreCallingIdentity(ident); 645 } 646 } 647 648 public boolean hasNamedWallpaper(String name) { 649 synchronized (mLock) { 650 List<UserInfo> users; 651 long ident = Binder.clearCallingIdentity(); 652 try { 653 users = ((UserManager) mContext.getSystemService(Context.USER_SERVICE)).getUsers(); 654 } finally { 655 Binder.restoreCallingIdentity(ident); 656 } 657 for (UserInfo user: users) { 658 WallpaperData wd = mWallpaperMap.get(user.id); 659 if (wd == null) { 660 // User hasn't started yet, so load her settings to peek at the wallpaper 661 loadSettingsLocked(user.id); 662 wd = mWallpaperMap.get(user.id); 663 } 664 if (wd != null && name.equals(wd.name)) { 665 return true; 666 } 667 } 668 } 669 return false; 670 } 671 672 private Point getDefaultDisplaySize() { 673 Point p = new Point(); 674 WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE); 675 Display d = wm.getDefaultDisplay(); 676 d.getRealSize(p); 677 return p; 678 } 679 680 public void setDimensionHints(int width, int height) throws RemoteException { 681 checkPermission(android.Manifest.permission.SET_WALLPAPER_HINTS); 682 synchronized (mLock) { 683 int userId = UserHandle.getCallingUserId(); 684 WallpaperData wallpaper = mWallpaperMap.get(userId); 685 if (wallpaper == null) { 686 throw new IllegalStateException("Wallpaper not yet initialized for user " + userId); 687 } 688 if (width <= 0 || height <= 0) { 689 throw new IllegalArgumentException("width and height must be > 0"); 690 } 691 // Make sure it is at least as large as the display. 692 Point displaySize = getDefaultDisplaySize(); 693 width = Math.max(width, displaySize.x); 694 height = Math.max(height, displaySize.y); 695 696 if (width != wallpaper.width || height != wallpaper.height) { 697 wallpaper.width = width; 698 wallpaper.height = height; 699 saveSettingsLocked(wallpaper); 700 if (mCurrentUserId != userId) return; // Don't change the properties now 701 if (wallpaper.connection != null) { 702 if (wallpaper.connection.mEngine != null) { 703 try { 704 wallpaper.connection.mEngine.setDesiredSize( 705 width, height); 706 } catch (RemoteException e) { 707 } 708 notifyCallbacksLocked(wallpaper); 709 } else if (wallpaper.connection.mService != null) { 710 // We've attached to the service but the engine hasn't attached back to us 711 // yet. This means it will be created with the previous dimensions, so we 712 // need to update it to the new dimensions once it attaches. 713 wallpaper.connection.mDimensionsChanged = true; 714 } 715 } 716 } 717 } 718 } 719 720 public int getWidthHint() throws RemoteException { 721 synchronized (mLock) { 722 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.getCallingUserId()); 723 return wallpaper.width; 724 } 725 } 726 727 public int getHeightHint() throws RemoteException { 728 synchronized (mLock) { 729 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.getCallingUserId()); 730 return wallpaper.height; 731 } 732 } 733 734 public void setDisplayPadding(Rect padding) { 735 checkPermission(android.Manifest.permission.SET_WALLPAPER_HINTS); 736 synchronized (mLock) { 737 int userId = UserHandle.getCallingUserId(); 738 WallpaperData wallpaper = mWallpaperMap.get(userId); 739 if (wallpaper == null) { 740 throw new IllegalStateException("Wallpaper not yet initialized for user " + userId); 741 } 742 if (padding.left < 0 || padding.top < 0 || padding.right < 0 || padding.bottom < 0) { 743 throw new IllegalArgumentException("padding must be positive: " + padding); 744 } 745 746 if (!padding.equals(wallpaper.padding)) { 747 wallpaper.padding.set(padding); 748 saveSettingsLocked(wallpaper); 749 if (mCurrentUserId != userId) return; // Don't change the properties now 750 if (wallpaper.connection != null) { 751 if (wallpaper.connection.mEngine != null) { 752 try { 753 wallpaper.connection.mEngine.setDisplayPadding(padding); 754 } catch (RemoteException e) { 755 } 756 notifyCallbacksLocked(wallpaper); 757 } else if (wallpaper.connection.mService != null) { 758 // We've attached to the service but the engine hasn't attached back to us 759 // yet. This means it will be created with the previous dimensions, so we 760 // need to update it to the new dimensions once it attaches. 761 wallpaper.connection.mPaddingChanged = true; 762 } 763 } 764 } 765 } 766 } 767 768 public ParcelFileDescriptor getWallpaper(IWallpaperManagerCallback cb, 769 Bundle outParams) { 770 synchronized (mLock) { 771 // This returns the current user's wallpaper, if called by a system service. Else it 772 // returns the wallpaper for the calling user. 773 int callingUid = Binder.getCallingUid(); 774 int wallpaperUserId = 0; 775 if (callingUid == android.os.Process.SYSTEM_UID) { 776 wallpaperUserId = mCurrentUserId; 777 } else { 778 wallpaperUserId = UserHandle.getUserId(callingUid); 779 } 780 WallpaperData wallpaper = mWallpaperMap.get(wallpaperUserId); 781 try { 782 if (outParams != null) { 783 outParams.putInt("width", wallpaper.width); 784 outParams.putInt("height", wallpaper.height); 785 } 786 wallpaper.callbacks.register(cb); 787 File f = new File(getWallpaperDir(wallpaperUserId), WALLPAPER); 788 if (!f.exists()) { 789 return null; 790 } 791 return ParcelFileDescriptor.open(f, MODE_READ_ONLY); 792 } catch (FileNotFoundException e) { 793 /* Shouldn't happen as we check to see if the file exists */ 794 Slog.w(TAG, "Error getting wallpaper", e); 795 } 796 return null; 797 } 798 } 799 800 public WallpaperInfo getWallpaperInfo() { 801 int userId = UserHandle.getCallingUserId(); 802 synchronized (mLock) { 803 WallpaperData wallpaper = mWallpaperMap.get(userId); 804 if (wallpaper.connection != null) { 805 return wallpaper.connection.mInfo; 806 } 807 return null; 808 } 809 } 810 811 public ParcelFileDescriptor setWallpaper(String name) { 812 checkPermission(android.Manifest.permission.SET_WALLPAPER); 813 synchronized (mLock) { 814 if (DEBUG) Slog.v(TAG, "setWallpaper"); 815 int userId = UserHandle.getCallingUserId(); 816 WallpaperData wallpaper = mWallpaperMap.get(userId); 817 if (wallpaper == null) { 818 throw new IllegalStateException("Wallpaper not yet initialized for user " + userId); 819 } 820 final long ident = Binder.clearCallingIdentity(); 821 try { 822 ParcelFileDescriptor pfd = updateWallpaperBitmapLocked(name, wallpaper); 823 if (pfd != null) { 824 wallpaper.imageWallpaperPending = true; 825 } 826 return pfd; 827 } finally { 828 Binder.restoreCallingIdentity(ident); 829 } 830 } 831 } 832 833 ParcelFileDescriptor updateWallpaperBitmapLocked(String name, WallpaperData wallpaper) { 834 if (name == null) name = ""; 835 try { 836 File dir = getWallpaperDir(wallpaper.userId); 837 if (!dir.exists()) { 838 dir.mkdir(); 839 FileUtils.setPermissions( 840 dir.getPath(), 841 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 842 -1, -1); 843 } 844 File file = new File(dir, WALLPAPER); 845 ParcelFileDescriptor fd = ParcelFileDescriptor.open(file, 846 MODE_CREATE|MODE_READ_WRITE); 847 if (!SELinux.restorecon(file)) { 848 return null; 849 } 850 wallpaper.name = name; 851 return fd; 852 } catch (FileNotFoundException e) { 853 Slog.w(TAG, "Error setting wallpaper", e); 854 } 855 return null; 856 } 857 858 public void setWallpaperComponent(ComponentName name) { 859 checkPermission(android.Manifest.permission.SET_WALLPAPER_COMPONENT); 860 synchronized (mLock) { 861 if (DEBUG) Slog.v(TAG, "setWallpaperComponent name=" + name); 862 int userId = UserHandle.getCallingUserId(); 863 WallpaperData wallpaper = mWallpaperMap.get(userId); 864 if (wallpaper == null) { 865 throw new IllegalStateException("Wallpaper not yet initialized for user " + userId); 866 } 867 final long ident = Binder.clearCallingIdentity(); 868 try { 869 wallpaper.imageWallpaperPending = false; 870 bindWallpaperComponentLocked(name, false, true, wallpaper, null); 871 } finally { 872 Binder.restoreCallingIdentity(ident); 873 } 874 } 875 } 876 877 boolean bindWallpaperComponentLocked(ComponentName componentName, boolean force, 878 boolean fromUser, WallpaperData wallpaper, IRemoteCallback reply) { 879 if (DEBUG) Slog.v(TAG, "bindWallpaperComponentLocked: componentName=" + componentName); 880 // Has the component changed? 881 if (!force) { 882 if (wallpaper.connection != null) { 883 if (wallpaper.wallpaperComponent == null) { 884 if (componentName == null) { 885 if (DEBUG) Slog.v(TAG, "bindWallpaperComponentLocked: still using default"); 886 // Still using default wallpaper. 887 return true; 888 } 889 } else if (wallpaper.wallpaperComponent.equals(componentName)) { 890 // Changing to same wallpaper. 891 if (DEBUG) Slog.v(TAG, "same wallpaper"); 892 return true; 893 } 894 } 895 } 896 897 try { 898 if (componentName == null) { 899 componentName = WallpaperManager.getDefaultWallpaperComponent(mContext); 900 if (componentName == null) { 901 // Fall back to static image wallpaper 902 componentName = mImageWallpaper; 903 //clearWallpaperComponentLocked(); 904 //return; 905 if (DEBUG) Slog.v(TAG, "Using image wallpaper"); 906 } 907 } 908 int serviceUserId = wallpaper.userId; 909 ServiceInfo si = mIPackageManager.getServiceInfo(componentName, 910 PackageManager.GET_META_DATA | PackageManager.GET_PERMISSIONS, serviceUserId); 911 if (si == null) { 912 // The wallpaper component we're trying to use doesn't exist 913 Slog.w(TAG, "Attempted wallpaper " + componentName + " is unavailable"); 914 return false; 915 } 916 if (!android.Manifest.permission.BIND_WALLPAPER.equals(si.permission)) { 917 String msg = "Selected service does not require " 918 + android.Manifest.permission.BIND_WALLPAPER 919 + ": " + componentName; 920 if (fromUser) { 921 throw new SecurityException(msg); 922 } 923 Slog.w(TAG, msg); 924 return false; 925 } 926 927 WallpaperInfo wi = null; 928 929 Intent intent = new Intent(WallpaperService.SERVICE_INTERFACE); 930 if (componentName != null && !componentName.equals(mImageWallpaper)) { 931 // Make sure the selected service is actually a wallpaper service. 932 List<ResolveInfo> ris = 933 mIPackageManager.queryIntentServices(intent, 934 intent.resolveTypeIfNeeded(mContext.getContentResolver()), 935 PackageManager.GET_META_DATA, serviceUserId); 936 for (int i=0; i<ris.size(); i++) { 937 ServiceInfo rsi = ris.get(i).serviceInfo; 938 if (rsi.name.equals(si.name) && 939 rsi.packageName.equals(si.packageName)) { 940 try { 941 wi = new WallpaperInfo(mContext, ris.get(i)); 942 } catch (XmlPullParserException e) { 943 if (fromUser) { 944 throw new IllegalArgumentException(e); 945 } 946 Slog.w(TAG, e); 947 return false; 948 } catch (IOException e) { 949 if (fromUser) { 950 throw new IllegalArgumentException(e); 951 } 952 Slog.w(TAG, e); 953 return false; 954 } 955 break; 956 } 957 } 958 if (wi == null) { 959 String msg = "Selected service is not a wallpaper: " 960 + componentName; 961 if (fromUser) { 962 throw new SecurityException(msg); 963 } 964 Slog.w(TAG, msg); 965 return false; 966 } 967 } 968 969 // Bind the service! 970 if (DEBUG) Slog.v(TAG, "Binding to:" + componentName); 971 WallpaperConnection newConn = new WallpaperConnection(wi, wallpaper); 972 intent.setComponent(componentName); 973 intent.putExtra(Intent.EXTRA_CLIENT_LABEL, 974 com.android.internal.R.string.wallpaper_binding_label); 975 intent.putExtra(Intent.EXTRA_CLIENT_INTENT, PendingIntent.getActivityAsUser( 976 mContext, 0, 977 Intent.createChooser(new Intent(Intent.ACTION_SET_WALLPAPER), 978 mContext.getText(com.android.internal.R.string.chooser_wallpaper)), 979 0, null, new UserHandle(serviceUserId))); 980 if (!mContext.bindServiceAsUser(intent, newConn, 981 Context.BIND_AUTO_CREATE | Context.BIND_SHOWING_UI, 982 new UserHandle(serviceUserId))) { 983 String msg = "Unable to bind service: " 984 + componentName; 985 if (fromUser) { 986 throw new IllegalArgumentException(msg); 987 } 988 Slog.w(TAG, msg); 989 return false; 990 } 991 if (wallpaper.userId == mCurrentUserId && mLastWallpaper != null) { 992 detachWallpaperLocked(mLastWallpaper); 993 } 994 wallpaper.wallpaperComponent = componentName; 995 wallpaper.connection = newConn; 996 newConn.mReply = reply; 997 try { 998 if (wallpaper.userId == mCurrentUserId) { 999 if (DEBUG) 1000 Slog.v(TAG, "Adding window token: " + newConn.mToken); 1001 mIWindowManager.addWindowToken(newConn.mToken, 1002 WindowManager.LayoutParams.TYPE_WALLPAPER); 1003 mLastWallpaper = wallpaper; 1004 } 1005 } catch (RemoteException e) { 1006 } 1007 } catch (RemoteException e) { 1008 String msg = "Remote exception for " + componentName + "\n" + e; 1009 if (fromUser) { 1010 throw new IllegalArgumentException(msg); 1011 } 1012 Slog.w(TAG, msg); 1013 return false; 1014 } 1015 return true; 1016 } 1017 1018 void detachWallpaperLocked(WallpaperData wallpaper) { 1019 if (wallpaper.connection != null) { 1020 if (wallpaper.connection.mReply != null) { 1021 try { 1022 wallpaper.connection.mReply.sendResult(null); 1023 } catch (RemoteException e) { 1024 } 1025 wallpaper.connection.mReply = null; 1026 } 1027 if (wallpaper.connection.mEngine != null) { 1028 try { 1029 wallpaper.connection.mEngine.destroy(); 1030 } catch (RemoteException e) { 1031 } 1032 } 1033 mContext.unbindService(wallpaper.connection); 1034 try { 1035 if (DEBUG) 1036 Slog.v(TAG, "Removing window token: " + wallpaper.connection.mToken); 1037 mIWindowManager.removeWindowToken(wallpaper.connection.mToken); 1038 } catch (RemoteException e) { 1039 } 1040 wallpaper.connection.mService = null; 1041 wallpaper.connection.mEngine = null; 1042 wallpaper.connection = null; 1043 } 1044 } 1045 1046 void clearWallpaperComponentLocked(WallpaperData wallpaper) { 1047 wallpaper.wallpaperComponent = null; 1048 detachWallpaperLocked(wallpaper); 1049 } 1050 1051 void attachServiceLocked(WallpaperConnection conn, WallpaperData wallpaper) { 1052 try { 1053 conn.mService.attach(conn, conn.mToken, 1054 WindowManager.LayoutParams.TYPE_WALLPAPER, false, 1055 wallpaper.width, wallpaper.height, wallpaper.padding); 1056 } catch (RemoteException e) { 1057 Slog.w(TAG, "Failed attaching wallpaper; clearing", e); 1058 if (!wallpaper.wallpaperUpdating) { 1059 bindWallpaperComponentLocked(null, false, false, wallpaper, null); 1060 } 1061 } 1062 } 1063 1064 private void notifyCallbacksLocked(WallpaperData wallpaper) { 1065 final int n = wallpaper.callbacks.beginBroadcast(); 1066 for (int i = 0; i < n; i++) { 1067 try { 1068 wallpaper.callbacks.getBroadcastItem(i).onWallpaperChanged(); 1069 } catch (RemoteException e) { 1070 1071 // The RemoteCallbackList will take care of removing 1072 // the dead object for us. 1073 } 1074 } 1075 wallpaper.callbacks.finishBroadcast(); 1076 final Intent intent = new Intent(Intent.ACTION_WALLPAPER_CHANGED); 1077 mContext.sendBroadcastAsUser(intent, new UserHandle(mCurrentUserId)); 1078 } 1079 1080 private void checkPermission(String permission) { 1081 if (PackageManager.PERMISSION_GRANTED!= mContext.checkCallingOrSelfPermission(permission)) { 1082 throw new SecurityException("Access denied to process: " + Binder.getCallingPid() 1083 + ", must have permission " + permission); 1084 } 1085 } 1086 1087 private static JournaledFile makeJournaledFile(int userId) { 1088 final String base = new File(getWallpaperDir(userId), WALLPAPER_INFO).getAbsolutePath(); 1089 return new JournaledFile(new File(base), new File(base + ".tmp")); 1090 } 1091 1092 private void saveSettingsLocked(WallpaperData wallpaper) { 1093 JournaledFile journal = makeJournaledFile(wallpaper.userId); 1094 FileOutputStream stream = null; 1095 try { 1096 stream = new FileOutputStream(journal.chooseForWrite(), false); 1097 XmlSerializer out = new FastXmlSerializer(); 1098 out.setOutput(stream, "utf-8"); 1099 out.startDocument(null, true); 1100 1101 out.startTag(null, "wp"); 1102 out.attribute(null, "width", Integer.toString(wallpaper.width)); 1103 out.attribute(null, "height", Integer.toString(wallpaper.height)); 1104 if (wallpaper.padding.left != 0) { 1105 out.attribute(null, "paddingLeft", Integer.toString(wallpaper.padding.left)); 1106 } 1107 if (wallpaper.padding.top != 0) { 1108 out.attribute(null, "paddingTop", Integer.toString(wallpaper.padding.top)); 1109 } 1110 if (wallpaper.padding.right != 0) { 1111 out.attribute(null, "paddingRight", Integer.toString(wallpaper.padding.right)); 1112 } 1113 if (wallpaper.padding.bottom != 0) { 1114 out.attribute(null, "paddingBottom", Integer.toString(wallpaper.padding.bottom)); 1115 } 1116 out.attribute(null, "name", wallpaper.name); 1117 if (wallpaper.wallpaperComponent != null 1118 && !wallpaper.wallpaperComponent.equals(mImageWallpaper)) { 1119 out.attribute(null, "component", 1120 wallpaper.wallpaperComponent.flattenToShortString()); 1121 } 1122 out.endTag(null, "wp"); 1123 1124 out.endDocument(); 1125 stream.close(); 1126 journal.commit(); 1127 } catch (IOException e) { 1128 try { 1129 if (stream != null) { 1130 stream.close(); 1131 } 1132 } catch (IOException ex) { 1133 // Ignore 1134 } 1135 journal.rollback(); 1136 } 1137 } 1138 1139 private void migrateFromOld() { 1140 File oldWallpaper = new File(WallpaperBackupHelper.WALLPAPER_IMAGE_KEY); 1141 File oldInfo = new File(WallpaperBackupHelper.WALLPAPER_INFO_KEY); 1142 if (oldWallpaper.exists()) { 1143 File newWallpaper = new File(getWallpaperDir(0), WALLPAPER); 1144 oldWallpaper.renameTo(newWallpaper); 1145 } 1146 if (oldInfo.exists()) { 1147 File newInfo = new File(getWallpaperDir(0), WALLPAPER_INFO); 1148 oldInfo.renameTo(newInfo); 1149 } 1150 } 1151 1152 private int getAttributeInt(XmlPullParser parser, String name, int defValue) { 1153 String value = parser.getAttributeValue(null, name); 1154 if (value == null) { 1155 return defValue; 1156 } 1157 return Integer.parseInt(value); 1158 } 1159 1160 private void loadSettingsLocked(int userId) { 1161 if (DEBUG) Slog.v(TAG, "loadSettingsLocked"); 1162 1163 JournaledFile journal = makeJournaledFile(userId); 1164 FileInputStream stream = null; 1165 File file = journal.chooseForRead(); 1166 if (!file.exists()) { 1167 // This should only happen one time, when upgrading from a legacy system 1168 migrateFromOld(); 1169 } 1170 WallpaperData wallpaper = mWallpaperMap.get(userId); 1171 if (wallpaper == null) { 1172 wallpaper = new WallpaperData(userId); 1173 mWallpaperMap.put(userId, wallpaper); 1174 } 1175 boolean success = false; 1176 try { 1177 stream = new FileInputStream(file); 1178 XmlPullParser parser = Xml.newPullParser(); 1179 parser.setInput(stream, null); 1180 1181 int type; 1182 do { 1183 type = parser.next(); 1184 if (type == XmlPullParser.START_TAG) { 1185 String tag = parser.getName(); 1186 if ("wp".equals(tag)) { 1187 wallpaper.width = Integer.parseInt(parser.getAttributeValue(null, "width")); 1188 wallpaper.height = Integer.parseInt(parser 1189 .getAttributeValue(null, "height")); 1190 wallpaper.padding.left = getAttributeInt(parser, "paddingLeft", 0); 1191 wallpaper.padding.top = getAttributeInt(parser, "paddingTop", 0); 1192 wallpaper.padding.right = getAttributeInt(parser, "paddingRight", 0); 1193 wallpaper.padding.bottom = getAttributeInt(parser, "paddingBottom", 0); 1194 wallpaper.name = parser.getAttributeValue(null, "name"); 1195 String comp = parser.getAttributeValue(null, "component"); 1196 wallpaper.nextWallpaperComponent = comp != null 1197 ? ComponentName.unflattenFromString(comp) 1198 : null; 1199 if (wallpaper.nextWallpaperComponent == null 1200 || "android".equals(wallpaper.nextWallpaperComponent 1201 .getPackageName())) { 1202 wallpaper.nextWallpaperComponent = mImageWallpaper; 1203 } 1204 1205 if (DEBUG) { 1206 Slog.v(TAG, "mWidth:" + wallpaper.width); 1207 Slog.v(TAG, "mHeight:" + wallpaper.height); 1208 Slog.v(TAG, "mName:" + wallpaper.name); 1209 Slog.v(TAG, "mNextWallpaperComponent:" 1210 + wallpaper.nextWallpaperComponent); 1211 } 1212 } 1213 } 1214 } while (type != XmlPullParser.END_DOCUMENT); 1215 success = true; 1216 } catch (FileNotFoundException e) { 1217 Slog.w(TAG, "no current wallpaper -- first boot?"); 1218 } catch (NullPointerException e) { 1219 Slog.w(TAG, "failed parsing " + file + " " + e); 1220 } catch (NumberFormatException e) { 1221 Slog.w(TAG, "failed parsing " + file + " " + e); 1222 } catch (XmlPullParserException e) { 1223 Slog.w(TAG, "failed parsing " + file + " " + e); 1224 } catch (IOException e) { 1225 Slog.w(TAG, "failed parsing " + file + " " + e); 1226 } catch (IndexOutOfBoundsException e) { 1227 Slog.w(TAG, "failed parsing " + file + " " + e); 1228 } 1229 try { 1230 if (stream != null) { 1231 stream.close(); 1232 } 1233 } catch (IOException e) { 1234 // Ignore 1235 } 1236 1237 if (!success) { 1238 wallpaper.width = -1; 1239 wallpaper.height = -1; 1240 wallpaper.padding.set(0, 0, 0, 0); 1241 wallpaper.name = ""; 1242 } 1243 1244 // We always want to have some reasonable width hint. 1245 int baseSize = getMaximumSizeDimension(); 1246 if (wallpaper.width < baseSize) { 1247 wallpaper.width = baseSize; 1248 } 1249 if (wallpaper.height < baseSize) { 1250 wallpaper.height = baseSize; 1251 } 1252 } 1253 1254 private int getMaximumSizeDimension() { 1255 WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE); 1256 Display d = wm.getDefaultDisplay(); 1257 return d.getMaximumSizeDimension(); 1258 } 1259 1260 // Called by SystemBackupAgent after files are restored to disk. 1261 public void settingsRestored() { 1262 // Verify caller is the system 1263 if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) { 1264 throw new RuntimeException("settingsRestored() can only be called from the system process"); 1265 } 1266 // TODO: If necessary, make it work for secondary users as well. This currently assumes 1267 // restores only to the primary user 1268 if (DEBUG) Slog.v(TAG, "settingsRestored"); 1269 WallpaperData wallpaper = null; 1270 boolean success = false; 1271 synchronized (mLock) { 1272 loadSettingsLocked(0); 1273 wallpaper = mWallpaperMap.get(0); 1274 if (wallpaper.nextWallpaperComponent != null 1275 && !wallpaper.nextWallpaperComponent.equals(mImageWallpaper)) { 1276 if (!bindWallpaperComponentLocked(wallpaper.nextWallpaperComponent, false, false, 1277 wallpaper, null)) { 1278 // No such live wallpaper or other failure; fall back to the default 1279 // live wallpaper (since the profile being restored indicated that the 1280 // user had selected a live rather than static one). 1281 bindWallpaperComponentLocked(null, false, false, wallpaper, null); 1282 } 1283 success = true; 1284 } else { 1285 // If there's a wallpaper name, we use that. If that can't be loaded, then we 1286 // use the default. 1287 if ("".equals(wallpaper.name)) { 1288 if (DEBUG) Slog.v(TAG, "settingsRestored: name is empty"); 1289 success = true; 1290 } else { 1291 if (DEBUG) Slog.v(TAG, "settingsRestored: attempting to restore named resource"); 1292 success = restoreNamedResourceLocked(wallpaper); 1293 } 1294 if (DEBUG) Slog.v(TAG, "settingsRestored: success=" + success); 1295 if (success) { 1296 bindWallpaperComponentLocked(wallpaper.nextWallpaperComponent, false, false, 1297 wallpaper, null); 1298 } 1299 } 1300 } 1301 1302 if (!success) { 1303 Slog.e(TAG, "Failed to restore wallpaper: '" + wallpaper.name + "'"); 1304 wallpaper.name = ""; 1305 getWallpaperDir(0).delete(); 1306 } 1307 1308 synchronized (mLock) { 1309 saveSettingsLocked(wallpaper); 1310 } 1311 } 1312 1313 boolean restoreNamedResourceLocked(WallpaperData wallpaper) { 1314 if (wallpaper.name.length() > 4 && "res:".equals(wallpaper.name.substring(0, 4))) { 1315 String resName = wallpaper.name.substring(4); 1316 1317 String pkg = null; 1318 int colon = resName.indexOf(':'); 1319 if (colon > 0) { 1320 pkg = resName.substring(0, colon); 1321 } 1322 1323 String ident = null; 1324 int slash = resName.lastIndexOf('/'); 1325 if (slash > 0) { 1326 ident = resName.substring(slash+1); 1327 } 1328 1329 String type = null; 1330 if (colon > 0 && slash > 0 && (slash-colon) > 1) { 1331 type = resName.substring(colon+1, slash); 1332 } 1333 1334 if (pkg != null && ident != null && type != null) { 1335 int resId = -1; 1336 InputStream res = null; 1337 FileOutputStream fos = null; 1338 try { 1339 Context c = mContext.createPackageContext(pkg, Context.CONTEXT_RESTRICTED); 1340 Resources r = c.getResources(); 1341 resId = r.getIdentifier(resName, null, null); 1342 if (resId == 0) { 1343 Slog.e(TAG, "couldn't resolve identifier pkg=" + pkg + " type=" + type 1344 + " ident=" + ident); 1345 return false; 1346 } 1347 1348 res = r.openRawResource(resId); 1349 if (wallpaper.wallpaperFile.exists()) { 1350 wallpaper.wallpaperFile.delete(); 1351 } 1352 fos = new FileOutputStream(wallpaper.wallpaperFile); 1353 1354 byte[] buffer = new byte[32768]; 1355 int amt; 1356 while ((amt=res.read(buffer)) > 0) { 1357 fos.write(buffer, 0, amt); 1358 } 1359 // mWallpaperObserver will notice the close and send the change broadcast 1360 1361 Slog.v(TAG, "Restored wallpaper: " + resName); 1362 return true; 1363 } catch (NameNotFoundException e) { 1364 Slog.e(TAG, "Package name " + pkg + " not found"); 1365 } catch (Resources.NotFoundException e) { 1366 Slog.e(TAG, "Resource not found: " + resId); 1367 } catch (IOException e) { 1368 Slog.e(TAG, "IOException while restoring wallpaper ", e); 1369 } finally { 1370 if (res != null) { 1371 try { 1372 res.close(); 1373 } catch (IOException ex) {} 1374 } 1375 if (fos != null) { 1376 FileUtils.sync(fos); 1377 try { 1378 fos.close(); 1379 } catch (IOException ex) {} 1380 } 1381 } 1382 } 1383 } 1384 return false; 1385 } 1386 1387 @Override 1388 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 1389 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 1390 != PackageManager.PERMISSION_GRANTED) { 1391 1392 pw.println("Permission Denial: can't dump wallpaper service from from pid=" 1393 + Binder.getCallingPid() 1394 + ", uid=" + Binder.getCallingUid()); 1395 return; 1396 } 1397 1398 synchronized (mLock) { 1399 pw.println("Current Wallpaper Service state:"); 1400 for (int i = 0; i < mWallpaperMap.size(); i++) { 1401 WallpaperData wallpaper = mWallpaperMap.valueAt(i); 1402 pw.println(" User " + wallpaper.userId + ":"); 1403 pw.print(" mWidth="); 1404 pw.print(wallpaper.width); 1405 pw.print(" mHeight="); 1406 pw.println(wallpaper.height); 1407 pw.print(" mPadding="); pw.println(wallpaper.padding); 1408 pw.print(" mName="); pw.println(wallpaper.name); 1409 pw.print(" mWallpaperComponent="); pw.println(wallpaper.wallpaperComponent); 1410 if (wallpaper.connection != null) { 1411 WallpaperConnection conn = wallpaper.connection; 1412 pw.print(" Wallpaper connection "); 1413 pw.print(conn); 1414 pw.println(":"); 1415 if (conn.mInfo != null) { 1416 pw.print(" mInfo.component="); 1417 pw.println(conn.mInfo.getComponent()); 1418 } 1419 pw.print(" mToken="); 1420 pw.println(conn.mToken); 1421 pw.print(" mService="); 1422 pw.println(conn.mService); 1423 pw.print(" mEngine="); 1424 pw.println(conn.mEngine); 1425 pw.print(" mLastDiedTime="); 1426 pw.println(wallpaper.lastDiedTime - SystemClock.uptimeMillis()); 1427 } 1428 } 1429 } 1430 } 1431} 1432