WallpaperManagerService.java revision da058e260d1c5ac8039034b38db8c697c16017bb
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 | MOVED_TO | 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 final boolean written = (event == CLOSE_WRITE || event == MOVED_TO); 141 if (mWallpaper.wallpaperComponent == null 142 || event != CLOSE_WRITE // includes the MOVED_TO case 143 || mWallpaper.imageWallpaperPending) { 144 if (written) { 145 mWallpaper.imageWallpaperPending = false; 146 } 147 bindWallpaperComponentLocked(mImageWallpaper, true, 148 false, mWallpaper, null); 149 saveSettingsLocked(mWallpaper); 150 } 151 } 152 } 153 } 154 } 155 156 final Context mContext; 157 final IWindowManager mIWindowManager; 158 final IPackageManager mIPackageManager; 159 final MyPackageMonitor mMonitor; 160 WallpaperData mLastWallpaper; 161 162 /** 163 * Name of the component used to display bitmap wallpapers from either the gallery or 164 * built-in wallpapers. 165 */ 166 final ComponentName mImageWallpaper; 167 168 SparseArray<WallpaperData> mWallpaperMap = new SparseArray<WallpaperData>(); 169 170 int mCurrentUserId; 171 172 static class WallpaperData { 173 174 int userId; 175 176 File wallpaperFile; 177 178 /** 179 * Client is currently writing a new image wallpaper. 180 */ 181 boolean imageWallpaperPending; 182 183 /** 184 * Resource name if using a picture from the wallpaper gallery 185 */ 186 String name = ""; 187 188 /** 189 * The component name of the currently set live wallpaper. 190 */ 191 ComponentName wallpaperComponent; 192 193 /** 194 * The component name of the wallpaper that should be set next. 195 */ 196 ComponentName nextWallpaperComponent; 197 198 WallpaperConnection connection; 199 long lastDiedTime; 200 boolean wallpaperUpdating; 201 WallpaperObserver wallpaperObserver; 202 203 /** 204 * List of callbacks registered they should each be notified when the wallpaper is changed. 205 */ 206 private RemoteCallbackList<IWallpaperManagerCallback> callbacks 207 = new RemoteCallbackList<IWallpaperManagerCallback>(); 208 209 int width = -1; 210 int height = -1; 211 212 final Rect padding = new Rect(0, 0, 0, 0); 213 214 WallpaperData(int userId) { 215 this.userId = userId; 216 wallpaperFile = new File(getWallpaperDir(userId), WALLPAPER); 217 } 218 } 219 220 class WallpaperConnection extends IWallpaperConnection.Stub 221 implements ServiceConnection { 222 final WallpaperInfo mInfo; 223 final Binder mToken = new Binder(); 224 IWallpaperService mService; 225 IWallpaperEngine mEngine; 226 WallpaperData mWallpaper; 227 IRemoteCallback mReply; 228 229 boolean mDimensionsChanged = false; 230 boolean mPaddingChanged = false; 231 232 public WallpaperConnection(WallpaperInfo info, WallpaperData wallpaper) { 233 mInfo = info; 234 mWallpaper = wallpaper; 235 } 236 237 @Override 238 public void onServiceConnected(ComponentName name, IBinder service) { 239 synchronized (mLock) { 240 if (mWallpaper.connection == this) { 241 mService = IWallpaperService.Stub.asInterface(service); 242 attachServiceLocked(this, mWallpaper); 243 // XXX should probably do saveSettingsLocked() later 244 // when we have an engine, but I'm not sure about 245 // locking there and anyway we always need to be able to 246 // recover if there is something wrong. 247 saveSettingsLocked(mWallpaper); 248 } 249 } 250 } 251 252 @Override 253 public void onServiceDisconnected(ComponentName name) { 254 synchronized (mLock) { 255 mService = null; 256 mEngine = null; 257 if (mWallpaper.connection == this) { 258 Slog.w(TAG, "Wallpaper service gone: " + mWallpaper.wallpaperComponent); 259 if (!mWallpaper.wallpaperUpdating 260 && mWallpaper.userId == mCurrentUserId) { 261 // There is a race condition which causes 262 // {@link #mWallpaper.wallpaperUpdating} to be false even if it is 263 // currently updating since the broadcast notifying us is async. 264 // This race is overcome by the general rule that we only reset the 265 // wallpaper if its service was shut down twice 266 // during {@link #MIN_WALLPAPER_CRASH_TIME} millis. 267 if (mWallpaper.lastDiedTime != 0 268 && mWallpaper.lastDiedTime + MIN_WALLPAPER_CRASH_TIME 269 > SystemClock.uptimeMillis()) { 270 Slog.w(TAG, "Reverting to built-in wallpaper!"); 271 clearWallpaperLocked(true, mWallpaper.userId, null); 272 } else { 273 mWallpaper.lastDiedTime = SystemClock.uptimeMillis(); 274 } 275 } 276 } 277 } 278 } 279 280 @Override 281 public void attachEngine(IWallpaperEngine engine) { 282 synchronized (mLock) { 283 mEngine = engine; 284 if (mDimensionsChanged) { 285 try { 286 mEngine.setDesiredSize(mWallpaper.width, mWallpaper.height); 287 } catch (RemoteException e) { 288 Slog.w(TAG, "Failed to set wallpaper dimensions", e); 289 } 290 mDimensionsChanged = false; 291 } 292 if (mPaddingChanged) { 293 try { 294 mEngine.setDisplayPadding(mWallpaper.padding); 295 } catch (RemoteException e) { 296 Slog.w(TAG, "Failed to set wallpaper padding", e); 297 } 298 mPaddingChanged = false; 299 } 300 } 301 } 302 303 @Override 304 public void engineShown(IWallpaperEngine engine) { 305 synchronized (mLock) { 306 if (mReply != null) { 307 long ident = Binder.clearCallingIdentity(); 308 try { 309 mReply.sendResult(null); 310 } catch (RemoteException e) { 311 Binder.restoreCallingIdentity(ident); 312 } 313 mReply = null; 314 } 315 } 316 } 317 318 @Override 319 public ParcelFileDescriptor setWallpaper(String name) { 320 synchronized (mLock) { 321 if (mWallpaper.connection == this) { 322 return updateWallpaperBitmapLocked(name, mWallpaper); 323 } 324 return null; 325 } 326 } 327 } 328 329 class MyPackageMonitor extends PackageMonitor { 330 @Override 331 public void onPackageUpdateFinished(String packageName, int uid) { 332 synchronized (mLock) { 333 if (mCurrentUserId != getChangingUserId()) { 334 return; 335 } 336 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 337 if (wallpaper != null) { 338 if (wallpaper.wallpaperComponent != null 339 && wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 340 wallpaper.wallpaperUpdating = false; 341 ComponentName comp = wallpaper.wallpaperComponent; 342 clearWallpaperComponentLocked(wallpaper); 343 if (!bindWallpaperComponentLocked(comp, false, false, 344 wallpaper, null)) { 345 Slog.w(TAG, "Wallpaper no longer available; reverting to default"); 346 clearWallpaperLocked(false, wallpaper.userId, null); 347 } 348 } 349 } 350 } 351 } 352 353 @Override 354 public void onPackageModified(String packageName) { 355 synchronized (mLock) { 356 if (mCurrentUserId != getChangingUserId()) { 357 return; 358 } 359 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 360 if (wallpaper != null) { 361 if (wallpaper.wallpaperComponent == null 362 || !wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 363 return; 364 } 365 doPackagesChangedLocked(true, wallpaper); 366 } 367 } 368 } 369 370 @Override 371 public void onPackageUpdateStarted(String packageName, int uid) { 372 synchronized (mLock) { 373 if (mCurrentUserId != getChangingUserId()) { 374 return; 375 } 376 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 377 if (wallpaper != null) { 378 if (wallpaper.wallpaperComponent != null 379 && wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 380 wallpaper.wallpaperUpdating = true; 381 } 382 } 383 } 384 } 385 386 @Override 387 public boolean onHandleForceStop(Intent intent, String[] packages, int uid, boolean doit) { 388 synchronized (mLock) { 389 boolean changed = false; 390 if (mCurrentUserId != getChangingUserId()) { 391 return false; 392 } 393 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 394 if (wallpaper != null) { 395 boolean res = doPackagesChangedLocked(doit, wallpaper); 396 changed |= res; 397 } 398 return changed; 399 } 400 } 401 402 @Override 403 public void onSomePackagesChanged() { 404 synchronized (mLock) { 405 if (mCurrentUserId != getChangingUserId()) { 406 return; 407 } 408 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 409 if (wallpaper != null) { 410 doPackagesChangedLocked(true, wallpaper); 411 } 412 } 413 } 414 415 boolean doPackagesChangedLocked(boolean doit, WallpaperData wallpaper) { 416 boolean changed = false; 417 if (wallpaper.wallpaperComponent != null) { 418 int change = isPackageDisappearing(wallpaper.wallpaperComponent 419 .getPackageName()); 420 if (change == PACKAGE_PERMANENT_CHANGE 421 || change == PACKAGE_TEMPORARY_CHANGE) { 422 changed = true; 423 if (doit) { 424 Slog.w(TAG, "Wallpaper uninstalled, removing: " 425 + wallpaper.wallpaperComponent); 426 clearWallpaperLocked(false, wallpaper.userId, null); 427 } 428 } 429 } 430 if (wallpaper.nextWallpaperComponent != null) { 431 int change = isPackageDisappearing(wallpaper.nextWallpaperComponent 432 .getPackageName()); 433 if (change == PACKAGE_PERMANENT_CHANGE 434 || change == PACKAGE_TEMPORARY_CHANGE) { 435 wallpaper.nextWallpaperComponent = null; 436 } 437 } 438 if (wallpaper.wallpaperComponent != null 439 && isPackageModified(wallpaper.wallpaperComponent.getPackageName())) { 440 try { 441 mContext.getPackageManager().getServiceInfo( 442 wallpaper.wallpaperComponent, 0); 443 } catch (NameNotFoundException e) { 444 Slog.w(TAG, "Wallpaper component gone, removing: " 445 + wallpaper.wallpaperComponent); 446 clearWallpaperLocked(false, wallpaper.userId, null); 447 } 448 } 449 if (wallpaper.nextWallpaperComponent != null 450 && isPackageModified(wallpaper.nextWallpaperComponent.getPackageName())) { 451 try { 452 mContext.getPackageManager().getServiceInfo( 453 wallpaper.nextWallpaperComponent, 0); 454 } catch (NameNotFoundException e) { 455 wallpaper.nextWallpaperComponent = null; 456 } 457 } 458 return changed; 459 } 460 } 461 462 public WallpaperManagerService(Context context) { 463 if (DEBUG) Slog.v(TAG, "WallpaperService startup"); 464 mContext = context; 465 mImageWallpaper = ComponentName.unflattenFromString( 466 context.getResources().getString(R.string.image_wallpaper_component)); 467 mIWindowManager = IWindowManager.Stub.asInterface( 468 ServiceManager.getService(Context.WINDOW_SERVICE)); 469 mIPackageManager = AppGlobals.getPackageManager(); 470 mMonitor = new MyPackageMonitor(); 471 mMonitor.register(context, null, UserHandle.ALL, true); 472 getWallpaperDir(UserHandle.USER_OWNER).mkdirs(); 473 loadSettingsLocked(UserHandle.USER_OWNER); 474 } 475 476 private static File getWallpaperDir(int userId) { 477 return Environment.getUserSystemDirectory(userId); 478 } 479 480 @Override 481 protected void finalize() throws Throwable { 482 super.finalize(); 483 for (int i = 0; i < mWallpaperMap.size(); i++) { 484 WallpaperData wallpaper = mWallpaperMap.valueAt(i); 485 wallpaper.wallpaperObserver.stopWatching(); 486 } 487 } 488 489 public void systemRunning() { 490 if (DEBUG) Slog.v(TAG, "systemReady"); 491 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.USER_OWNER); 492 switchWallpaper(wallpaper, null); 493 wallpaper.wallpaperObserver = new WallpaperObserver(wallpaper); 494 wallpaper.wallpaperObserver.startWatching(); 495 496 IntentFilter userFilter = new IntentFilter(); 497 userFilter.addAction(Intent.ACTION_USER_REMOVED); 498 userFilter.addAction(Intent.ACTION_USER_STOPPING); 499 mContext.registerReceiver(new BroadcastReceiver() { 500 @Override 501 public void onReceive(Context context, Intent intent) { 502 String action = intent.getAction(); 503 if (Intent.ACTION_USER_REMOVED.equals(action)) { 504 onRemoveUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 505 UserHandle.USER_NULL)); 506 } 507 // TODO: Race condition causing problems when cleaning up on stopping a user. 508 // Comment this out for now. 509 // else if (Intent.ACTION_USER_STOPPING.equals(action)) { 510 // onStoppingUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 511 // UserHandle.USER_NULL)); 512 // } 513 } 514 }, userFilter); 515 516 try { 517 ActivityManagerNative.getDefault().registerUserSwitchObserver( 518 new IUserSwitchObserver.Stub() { 519 @Override 520 public void onUserSwitching(int newUserId, IRemoteCallback reply) { 521 switchUser(newUserId, reply); 522 } 523 524 @Override 525 public void onUserSwitchComplete(int newUserId) throws RemoteException { 526 } 527 }); 528 } catch (RemoteException e) { 529 // TODO Auto-generated catch block 530 e.printStackTrace(); 531 } 532 } 533 534 /** Called by SystemBackupAgent */ 535 public String getName() { 536 // Verify caller is the system 537 if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) { 538 throw new RuntimeException("getName() can only be called from the system process"); 539 } 540 synchronized (mLock) { 541 return mWallpaperMap.get(0).name; 542 } 543 } 544 545 void onStoppingUser(int userId) { 546 if (userId < 1) return; 547 synchronized (mLock) { 548 WallpaperData wallpaper = mWallpaperMap.get(userId); 549 if (wallpaper != null) { 550 if (wallpaper.wallpaperObserver != null) { 551 wallpaper.wallpaperObserver.stopWatching(); 552 wallpaper.wallpaperObserver = null; 553 } 554 mWallpaperMap.remove(userId); 555 } 556 } 557 } 558 559 void onRemoveUser(int userId) { 560 if (userId < 1) return; 561 synchronized (mLock) { 562 onStoppingUser(userId); 563 File wallpaperFile = new File(getWallpaperDir(userId), WALLPAPER); 564 wallpaperFile.delete(); 565 File wallpaperInfoFile = new File(getWallpaperDir(userId), WALLPAPER_INFO); 566 wallpaperInfoFile.delete(); 567 } 568 } 569 570 void switchUser(int userId, IRemoteCallback reply) { 571 synchronized (mLock) { 572 mCurrentUserId = userId; 573 WallpaperData wallpaper = mWallpaperMap.get(userId); 574 if (wallpaper == null) { 575 wallpaper = new WallpaperData(userId); 576 mWallpaperMap.put(userId, wallpaper); 577 loadSettingsLocked(userId); 578 } 579 // Not started watching yet, in case wallpaper data was loaded for other reasons. 580 if (wallpaper.wallpaperObserver == null) { 581 wallpaper.wallpaperObserver = new WallpaperObserver(wallpaper); 582 wallpaper.wallpaperObserver.startWatching(); 583 } 584 switchWallpaper(wallpaper, reply); 585 } 586 } 587 588 void switchWallpaper(WallpaperData wallpaper, IRemoteCallback reply) { 589 synchronized (mLock) { 590 RuntimeException e = null; 591 try { 592 ComponentName cname = wallpaper.wallpaperComponent != null ? 593 wallpaper.wallpaperComponent : wallpaper.nextWallpaperComponent; 594 if (bindWallpaperComponentLocked(cname, true, false, wallpaper, reply)) { 595 return; 596 } 597 } catch (RuntimeException e1) { 598 e = e1; 599 } 600 Slog.w(TAG, "Failure starting previous wallpaper", e); 601 clearWallpaperLocked(false, wallpaper.userId, reply); 602 } 603 } 604 605 public void clearWallpaper() { 606 if (DEBUG) Slog.v(TAG, "clearWallpaper"); 607 synchronized (mLock) { 608 clearWallpaperLocked(false, UserHandle.getCallingUserId(), null); 609 } 610 } 611 612 void clearWallpaperLocked(boolean defaultFailed, int userId, IRemoteCallback reply) { 613 WallpaperData wallpaper = mWallpaperMap.get(userId); 614 File f = new File(getWallpaperDir(userId), WALLPAPER); 615 if (f.exists()) { 616 f.delete(); 617 } 618 final long ident = Binder.clearCallingIdentity(); 619 try { 620 RuntimeException e = null; 621 try { 622 wallpaper.imageWallpaperPending = false; 623 if (userId != mCurrentUserId) return; 624 if (bindWallpaperComponentLocked(defaultFailed 625 ? mImageWallpaper 626 : null, true, false, wallpaper, reply)) { 627 return; 628 } 629 } catch (IllegalArgumentException e1) { 630 e = e1; 631 } 632 633 // This can happen if the default wallpaper component doesn't 634 // exist. This should be a system configuration problem, but 635 // let's not let it crash the system and just live with no 636 // wallpaper. 637 Slog.e(TAG, "Default wallpaper component not found!", e); 638 clearWallpaperComponentLocked(wallpaper); 639 if (reply != null) { 640 try { 641 reply.sendResult(null); 642 } catch (RemoteException e1) { 643 } 644 } 645 } finally { 646 Binder.restoreCallingIdentity(ident); 647 } 648 } 649 650 public boolean hasNamedWallpaper(String name) { 651 synchronized (mLock) { 652 List<UserInfo> users; 653 long ident = Binder.clearCallingIdentity(); 654 try { 655 users = ((UserManager) mContext.getSystemService(Context.USER_SERVICE)).getUsers(); 656 } finally { 657 Binder.restoreCallingIdentity(ident); 658 } 659 for (UserInfo user: users) { 660 WallpaperData wd = mWallpaperMap.get(user.id); 661 if (wd == null) { 662 // User hasn't started yet, so load her settings to peek at the wallpaper 663 loadSettingsLocked(user.id); 664 wd = mWallpaperMap.get(user.id); 665 } 666 if (wd != null && name.equals(wd.name)) { 667 return true; 668 } 669 } 670 } 671 return false; 672 } 673 674 private Point getDefaultDisplaySize() { 675 Point p = new Point(); 676 WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE); 677 Display d = wm.getDefaultDisplay(); 678 d.getRealSize(p); 679 return p; 680 } 681 682 public void setDimensionHints(int width, int height) throws RemoteException { 683 checkPermission(android.Manifest.permission.SET_WALLPAPER_HINTS); 684 synchronized (mLock) { 685 int userId = UserHandle.getCallingUserId(); 686 WallpaperData wallpaper = mWallpaperMap.get(userId); 687 if (wallpaper == null) { 688 throw new IllegalStateException("Wallpaper not yet initialized for user " + userId); 689 } 690 if (width <= 0 || height <= 0) { 691 throw new IllegalArgumentException("width and height must be > 0"); 692 } 693 // Make sure it is at least as large as the display. 694 Point displaySize = getDefaultDisplaySize(); 695 width = Math.max(width, displaySize.x); 696 height = Math.max(height, displaySize.y); 697 698 if (width != wallpaper.width || height != wallpaper.height) { 699 wallpaper.width = width; 700 wallpaper.height = height; 701 saveSettingsLocked(wallpaper); 702 if (mCurrentUserId != userId) return; // Don't change the properties now 703 if (wallpaper.connection != null) { 704 if (wallpaper.connection.mEngine != null) { 705 try { 706 wallpaper.connection.mEngine.setDesiredSize( 707 width, height); 708 } catch (RemoteException e) { 709 } 710 notifyCallbacksLocked(wallpaper); 711 } else if (wallpaper.connection.mService != null) { 712 // We've attached to the service but the engine hasn't attached back to us 713 // yet. This means it will be created with the previous dimensions, so we 714 // need to update it to the new dimensions once it attaches. 715 wallpaper.connection.mDimensionsChanged = true; 716 } 717 } 718 } 719 } 720 } 721 722 public int getWidthHint() throws RemoteException { 723 synchronized (mLock) { 724 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.getCallingUserId()); 725 return wallpaper.width; 726 } 727 } 728 729 public int getHeightHint() throws RemoteException { 730 synchronized (mLock) { 731 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.getCallingUserId()); 732 return wallpaper.height; 733 } 734 } 735 736 public void setDisplayPadding(Rect padding) { 737 checkPermission(android.Manifest.permission.SET_WALLPAPER_HINTS); 738 synchronized (mLock) { 739 int userId = UserHandle.getCallingUserId(); 740 WallpaperData wallpaper = mWallpaperMap.get(userId); 741 if (wallpaper == null) { 742 throw new IllegalStateException("Wallpaper not yet initialized for user " + userId); 743 } 744 if (padding.left < 0 || padding.top < 0 || padding.right < 0 || padding.bottom < 0) { 745 throw new IllegalArgumentException("padding must be positive: " + padding); 746 } 747 748 if (!padding.equals(wallpaper.padding)) { 749 wallpaper.padding.set(padding); 750 saveSettingsLocked(wallpaper); 751 if (mCurrentUserId != userId) return; // Don't change the properties now 752 if (wallpaper.connection != null) { 753 if (wallpaper.connection.mEngine != null) { 754 try { 755 wallpaper.connection.mEngine.setDisplayPadding(padding); 756 } catch (RemoteException e) { 757 } 758 notifyCallbacksLocked(wallpaper); 759 } else if (wallpaper.connection.mService != null) { 760 // We've attached to the service but the engine hasn't attached back to us 761 // yet. This means it will be created with the previous dimensions, so we 762 // need to update it to the new dimensions once it attaches. 763 wallpaper.connection.mPaddingChanged = true; 764 } 765 } 766 } 767 } 768 } 769 770 public ParcelFileDescriptor getWallpaper(IWallpaperManagerCallback cb, 771 Bundle outParams) { 772 synchronized (mLock) { 773 // This returns the current user's wallpaper, if called by a system service. Else it 774 // returns the wallpaper for the calling user. 775 int callingUid = Binder.getCallingUid(); 776 int wallpaperUserId = 0; 777 if (callingUid == android.os.Process.SYSTEM_UID) { 778 wallpaperUserId = mCurrentUserId; 779 } else { 780 wallpaperUserId = UserHandle.getUserId(callingUid); 781 } 782 WallpaperData wallpaper = mWallpaperMap.get(wallpaperUserId); 783 try { 784 if (outParams != null) { 785 outParams.putInt("width", wallpaper.width); 786 outParams.putInt("height", wallpaper.height); 787 } 788 wallpaper.callbacks.register(cb); 789 File f = new File(getWallpaperDir(wallpaperUserId), WALLPAPER); 790 if (!f.exists()) { 791 return null; 792 } 793 return ParcelFileDescriptor.open(f, MODE_READ_ONLY); 794 } catch (FileNotFoundException e) { 795 /* Shouldn't happen as we check to see if the file exists */ 796 Slog.w(TAG, "Error getting wallpaper", e); 797 } 798 return null; 799 } 800 } 801 802 public WallpaperInfo getWallpaperInfo() { 803 int userId = UserHandle.getCallingUserId(); 804 synchronized (mLock) { 805 WallpaperData wallpaper = mWallpaperMap.get(userId); 806 if (wallpaper.connection != null) { 807 return wallpaper.connection.mInfo; 808 } 809 return null; 810 } 811 } 812 813 public ParcelFileDescriptor setWallpaper(String name) { 814 checkPermission(android.Manifest.permission.SET_WALLPAPER); 815 synchronized (mLock) { 816 if (DEBUG) Slog.v(TAG, "setWallpaper"); 817 int userId = UserHandle.getCallingUserId(); 818 WallpaperData wallpaper = mWallpaperMap.get(userId); 819 if (wallpaper == null) { 820 throw new IllegalStateException("Wallpaper not yet initialized for user " + userId); 821 } 822 final long ident = Binder.clearCallingIdentity(); 823 try { 824 ParcelFileDescriptor pfd = updateWallpaperBitmapLocked(name, wallpaper); 825 if (pfd != null) { 826 wallpaper.imageWallpaperPending = true; 827 } 828 return pfd; 829 } finally { 830 Binder.restoreCallingIdentity(ident); 831 } 832 } 833 } 834 835 ParcelFileDescriptor updateWallpaperBitmapLocked(String name, WallpaperData wallpaper) { 836 if (name == null) name = ""; 837 try { 838 File dir = getWallpaperDir(wallpaper.userId); 839 if (!dir.exists()) { 840 dir.mkdir(); 841 FileUtils.setPermissions( 842 dir.getPath(), 843 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 844 -1, -1); 845 } 846 File file = new File(dir, WALLPAPER); 847 ParcelFileDescriptor fd = ParcelFileDescriptor.open(file, 848 MODE_CREATE|MODE_READ_WRITE|MODE_TRUNCATE); 849 if (!SELinux.restorecon(file)) { 850 return null; 851 } 852 wallpaper.name = name; 853 return fd; 854 } catch (FileNotFoundException e) { 855 Slog.w(TAG, "Error setting wallpaper", e); 856 } 857 return null; 858 } 859 860 public void setWallpaperComponent(ComponentName name) { 861 checkPermission(android.Manifest.permission.SET_WALLPAPER_COMPONENT); 862 synchronized (mLock) { 863 if (DEBUG) Slog.v(TAG, "setWallpaperComponent name=" + name); 864 int userId = UserHandle.getCallingUserId(); 865 WallpaperData wallpaper = mWallpaperMap.get(userId); 866 if (wallpaper == null) { 867 throw new IllegalStateException("Wallpaper not yet initialized for user " + userId); 868 } 869 final long ident = Binder.clearCallingIdentity(); 870 try { 871 wallpaper.imageWallpaperPending = false; 872 bindWallpaperComponentLocked(name, false, true, wallpaper, null); 873 } finally { 874 Binder.restoreCallingIdentity(ident); 875 } 876 } 877 } 878 879 boolean bindWallpaperComponentLocked(ComponentName componentName, boolean force, 880 boolean fromUser, WallpaperData wallpaper, IRemoteCallback reply) { 881 if (DEBUG) Slog.v(TAG, "bindWallpaperComponentLocked: componentName=" + componentName); 882 // Has the component changed? 883 if (!force) { 884 if (wallpaper.connection != null) { 885 if (wallpaper.wallpaperComponent == null) { 886 if (componentName == null) { 887 if (DEBUG) Slog.v(TAG, "bindWallpaperComponentLocked: still using default"); 888 // Still using default wallpaper. 889 return true; 890 } 891 } else if (wallpaper.wallpaperComponent.equals(componentName)) { 892 // Changing to same wallpaper. 893 if (DEBUG) Slog.v(TAG, "same wallpaper"); 894 return true; 895 } 896 } 897 } 898 899 try { 900 if (componentName == null) { 901 componentName = WallpaperManager.getDefaultWallpaperComponent(mContext); 902 if (componentName == null) { 903 // Fall back to static image wallpaper 904 componentName = mImageWallpaper; 905 //clearWallpaperComponentLocked(); 906 //return; 907 if (DEBUG) Slog.v(TAG, "Using image wallpaper"); 908 } 909 } 910 int serviceUserId = wallpaper.userId; 911 ServiceInfo si = mIPackageManager.getServiceInfo(componentName, 912 PackageManager.GET_META_DATA | PackageManager.GET_PERMISSIONS, serviceUserId); 913 if (si == null) { 914 // The wallpaper component we're trying to use doesn't exist 915 Slog.w(TAG, "Attempted wallpaper " + componentName + " is unavailable"); 916 return false; 917 } 918 if (!android.Manifest.permission.BIND_WALLPAPER.equals(si.permission)) { 919 String msg = "Selected service does not require " 920 + android.Manifest.permission.BIND_WALLPAPER 921 + ": " + componentName; 922 if (fromUser) { 923 throw new SecurityException(msg); 924 } 925 Slog.w(TAG, msg); 926 return false; 927 } 928 929 WallpaperInfo wi = null; 930 931 Intent intent = new Intent(WallpaperService.SERVICE_INTERFACE); 932 if (componentName != null && !componentName.equals(mImageWallpaper)) { 933 // Make sure the selected service is actually a wallpaper service. 934 List<ResolveInfo> ris = 935 mIPackageManager.queryIntentServices(intent, 936 intent.resolveTypeIfNeeded(mContext.getContentResolver()), 937 PackageManager.GET_META_DATA, serviceUserId); 938 for (int i=0; i<ris.size(); i++) { 939 ServiceInfo rsi = ris.get(i).serviceInfo; 940 if (rsi.name.equals(si.name) && 941 rsi.packageName.equals(si.packageName)) { 942 try { 943 wi = new WallpaperInfo(mContext, ris.get(i)); 944 } catch (XmlPullParserException e) { 945 if (fromUser) { 946 throw new IllegalArgumentException(e); 947 } 948 Slog.w(TAG, e); 949 return false; 950 } catch (IOException e) { 951 if (fromUser) { 952 throw new IllegalArgumentException(e); 953 } 954 Slog.w(TAG, e); 955 return false; 956 } 957 break; 958 } 959 } 960 if (wi == null) { 961 String msg = "Selected service is not a wallpaper: " 962 + componentName; 963 if (fromUser) { 964 throw new SecurityException(msg); 965 } 966 Slog.w(TAG, msg); 967 return false; 968 } 969 } 970 971 // Bind the service! 972 if (DEBUG) Slog.v(TAG, "Binding to:" + componentName); 973 WallpaperConnection newConn = new WallpaperConnection(wi, wallpaper); 974 intent.setComponent(componentName); 975 intent.putExtra(Intent.EXTRA_CLIENT_LABEL, 976 com.android.internal.R.string.wallpaper_binding_label); 977 intent.putExtra(Intent.EXTRA_CLIENT_INTENT, PendingIntent.getActivityAsUser( 978 mContext, 0, 979 Intent.createChooser(new Intent(Intent.ACTION_SET_WALLPAPER), 980 mContext.getText(com.android.internal.R.string.chooser_wallpaper)), 981 0, null, new UserHandle(serviceUserId))); 982 if (!mContext.bindServiceAsUser(intent, newConn, 983 Context.BIND_AUTO_CREATE | Context.BIND_SHOWING_UI, 984 new UserHandle(serviceUserId))) { 985 String msg = "Unable to bind service: " 986 + componentName; 987 if (fromUser) { 988 throw new IllegalArgumentException(msg); 989 } 990 Slog.w(TAG, msg); 991 return false; 992 } 993 if (wallpaper.userId == mCurrentUserId && mLastWallpaper != null) { 994 detachWallpaperLocked(mLastWallpaper); 995 } 996 wallpaper.wallpaperComponent = componentName; 997 wallpaper.connection = newConn; 998 newConn.mReply = reply; 999 try { 1000 if (wallpaper.userId == mCurrentUserId) { 1001 if (DEBUG) 1002 Slog.v(TAG, "Adding window token: " + newConn.mToken); 1003 mIWindowManager.addWindowToken(newConn.mToken, 1004 WindowManager.LayoutParams.TYPE_WALLPAPER); 1005 mLastWallpaper = wallpaper; 1006 } 1007 } catch (RemoteException e) { 1008 } 1009 } catch (RemoteException e) { 1010 String msg = "Remote exception for " + componentName + "\n" + e; 1011 if (fromUser) { 1012 throw new IllegalArgumentException(msg); 1013 } 1014 Slog.w(TAG, msg); 1015 return false; 1016 } 1017 return true; 1018 } 1019 1020 void detachWallpaperLocked(WallpaperData wallpaper) { 1021 if (wallpaper.connection != null) { 1022 if (wallpaper.connection.mReply != null) { 1023 try { 1024 wallpaper.connection.mReply.sendResult(null); 1025 } catch (RemoteException e) { 1026 } 1027 wallpaper.connection.mReply = null; 1028 } 1029 if (wallpaper.connection.mEngine != null) { 1030 try { 1031 wallpaper.connection.mEngine.destroy(); 1032 } catch (RemoteException e) { 1033 } 1034 } 1035 mContext.unbindService(wallpaper.connection); 1036 try { 1037 if (DEBUG) 1038 Slog.v(TAG, "Removing window token: " + wallpaper.connection.mToken); 1039 mIWindowManager.removeWindowToken(wallpaper.connection.mToken); 1040 } catch (RemoteException e) { 1041 } 1042 wallpaper.connection.mService = null; 1043 wallpaper.connection.mEngine = null; 1044 wallpaper.connection = null; 1045 } 1046 } 1047 1048 void clearWallpaperComponentLocked(WallpaperData wallpaper) { 1049 wallpaper.wallpaperComponent = null; 1050 detachWallpaperLocked(wallpaper); 1051 } 1052 1053 void attachServiceLocked(WallpaperConnection conn, WallpaperData wallpaper) { 1054 try { 1055 conn.mService.attach(conn, conn.mToken, 1056 WindowManager.LayoutParams.TYPE_WALLPAPER, false, 1057 wallpaper.width, wallpaper.height, wallpaper.padding); 1058 } catch (RemoteException e) { 1059 Slog.w(TAG, "Failed attaching wallpaper; clearing", e); 1060 if (!wallpaper.wallpaperUpdating) { 1061 bindWallpaperComponentLocked(null, false, false, wallpaper, null); 1062 } 1063 } 1064 } 1065 1066 private void notifyCallbacksLocked(WallpaperData wallpaper) { 1067 final int n = wallpaper.callbacks.beginBroadcast(); 1068 for (int i = 0; i < n; i++) { 1069 try { 1070 wallpaper.callbacks.getBroadcastItem(i).onWallpaperChanged(); 1071 } catch (RemoteException e) { 1072 1073 // The RemoteCallbackList will take care of removing 1074 // the dead object for us. 1075 } 1076 } 1077 wallpaper.callbacks.finishBroadcast(); 1078 final Intent intent = new Intent(Intent.ACTION_WALLPAPER_CHANGED); 1079 mContext.sendBroadcastAsUser(intent, new UserHandle(mCurrentUserId)); 1080 } 1081 1082 private void checkPermission(String permission) { 1083 if (PackageManager.PERMISSION_GRANTED!= mContext.checkCallingOrSelfPermission(permission)) { 1084 throw new SecurityException("Access denied to process: " + Binder.getCallingPid() 1085 + ", must have permission " + permission); 1086 } 1087 } 1088 1089 private static JournaledFile makeJournaledFile(int userId) { 1090 final String base = new File(getWallpaperDir(userId), WALLPAPER_INFO).getAbsolutePath(); 1091 return new JournaledFile(new File(base), new File(base + ".tmp")); 1092 } 1093 1094 private void saveSettingsLocked(WallpaperData wallpaper) { 1095 JournaledFile journal = makeJournaledFile(wallpaper.userId); 1096 FileOutputStream stream = null; 1097 try { 1098 stream = new FileOutputStream(journal.chooseForWrite(), false); 1099 XmlSerializer out = new FastXmlSerializer(); 1100 out.setOutput(stream, "utf-8"); 1101 out.startDocument(null, true); 1102 1103 out.startTag(null, "wp"); 1104 out.attribute(null, "width", Integer.toString(wallpaper.width)); 1105 out.attribute(null, "height", Integer.toString(wallpaper.height)); 1106 if (wallpaper.padding.left != 0) { 1107 out.attribute(null, "paddingLeft", Integer.toString(wallpaper.padding.left)); 1108 } 1109 if (wallpaper.padding.top != 0) { 1110 out.attribute(null, "paddingTop", Integer.toString(wallpaper.padding.top)); 1111 } 1112 if (wallpaper.padding.right != 0) { 1113 out.attribute(null, "paddingRight", Integer.toString(wallpaper.padding.right)); 1114 } 1115 if (wallpaper.padding.bottom != 0) { 1116 out.attribute(null, "paddingBottom", Integer.toString(wallpaper.padding.bottom)); 1117 } 1118 out.attribute(null, "name", wallpaper.name); 1119 if (wallpaper.wallpaperComponent != null 1120 && !wallpaper.wallpaperComponent.equals(mImageWallpaper)) { 1121 out.attribute(null, "component", 1122 wallpaper.wallpaperComponent.flattenToShortString()); 1123 } 1124 out.endTag(null, "wp"); 1125 1126 out.endDocument(); 1127 stream.close(); 1128 journal.commit(); 1129 } catch (IOException e) { 1130 try { 1131 if (stream != null) { 1132 stream.close(); 1133 } 1134 } catch (IOException ex) { 1135 // Ignore 1136 } 1137 journal.rollback(); 1138 } 1139 } 1140 1141 private void migrateFromOld() { 1142 File oldWallpaper = new File(WallpaperBackupHelper.WALLPAPER_IMAGE_KEY); 1143 File oldInfo = new File(WallpaperBackupHelper.WALLPAPER_INFO_KEY); 1144 if (oldWallpaper.exists()) { 1145 File newWallpaper = new File(getWallpaperDir(0), WALLPAPER); 1146 oldWallpaper.renameTo(newWallpaper); 1147 } 1148 if (oldInfo.exists()) { 1149 File newInfo = new File(getWallpaperDir(0), WALLPAPER_INFO); 1150 oldInfo.renameTo(newInfo); 1151 } 1152 } 1153 1154 private int getAttributeInt(XmlPullParser parser, String name, int defValue) { 1155 String value = parser.getAttributeValue(null, name); 1156 if (value == null) { 1157 return defValue; 1158 } 1159 return Integer.parseInt(value); 1160 } 1161 1162 private void loadSettingsLocked(int userId) { 1163 if (DEBUG) Slog.v(TAG, "loadSettingsLocked"); 1164 1165 JournaledFile journal = makeJournaledFile(userId); 1166 FileInputStream stream = null; 1167 File file = journal.chooseForRead(); 1168 if (!file.exists()) { 1169 // This should only happen one time, when upgrading from a legacy system 1170 migrateFromOld(); 1171 } 1172 WallpaperData wallpaper = mWallpaperMap.get(userId); 1173 if (wallpaper == null) { 1174 wallpaper = new WallpaperData(userId); 1175 mWallpaperMap.put(userId, wallpaper); 1176 } 1177 boolean success = false; 1178 try { 1179 stream = new FileInputStream(file); 1180 XmlPullParser parser = Xml.newPullParser(); 1181 parser.setInput(stream, null); 1182 1183 int type; 1184 do { 1185 type = parser.next(); 1186 if (type == XmlPullParser.START_TAG) { 1187 String tag = parser.getName(); 1188 if ("wp".equals(tag)) { 1189 wallpaper.width = Integer.parseInt(parser.getAttributeValue(null, "width")); 1190 wallpaper.height = Integer.parseInt(parser 1191 .getAttributeValue(null, "height")); 1192 wallpaper.padding.left = getAttributeInt(parser, "paddingLeft", 0); 1193 wallpaper.padding.top = getAttributeInt(parser, "paddingTop", 0); 1194 wallpaper.padding.right = getAttributeInt(parser, "paddingRight", 0); 1195 wallpaper.padding.bottom = getAttributeInt(parser, "paddingBottom", 0); 1196 wallpaper.name = parser.getAttributeValue(null, "name"); 1197 String comp = parser.getAttributeValue(null, "component"); 1198 wallpaper.nextWallpaperComponent = comp != null 1199 ? ComponentName.unflattenFromString(comp) 1200 : null; 1201 if (wallpaper.nextWallpaperComponent == null 1202 || "android".equals(wallpaper.nextWallpaperComponent 1203 .getPackageName())) { 1204 wallpaper.nextWallpaperComponent = mImageWallpaper; 1205 } 1206 1207 if (DEBUG) { 1208 Slog.v(TAG, "mWidth:" + wallpaper.width); 1209 Slog.v(TAG, "mHeight:" + wallpaper.height); 1210 Slog.v(TAG, "mName:" + wallpaper.name); 1211 Slog.v(TAG, "mNextWallpaperComponent:" 1212 + wallpaper.nextWallpaperComponent); 1213 } 1214 } 1215 } 1216 } while (type != XmlPullParser.END_DOCUMENT); 1217 success = true; 1218 } catch (FileNotFoundException e) { 1219 Slog.w(TAG, "no current wallpaper -- first boot?"); 1220 } catch (NullPointerException e) { 1221 Slog.w(TAG, "failed parsing " + file + " " + e); 1222 } catch (NumberFormatException e) { 1223 Slog.w(TAG, "failed parsing " + file + " " + e); 1224 } catch (XmlPullParserException e) { 1225 Slog.w(TAG, "failed parsing " + file + " " + e); 1226 } catch (IOException e) { 1227 Slog.w(TAG, "failed parsing " + file + " " + e); 1228 } catch (IndexOutOfBoundsException e) { 1229 Slog.w(TAG, "failed parsing " + file + " " + e); 1230 } 1231 try { 1232 if (stream != null) { 1233 stream.close(); 1234 } 1235 } catch (IOException e) { 1236 // Ignore 1237 } 1238 1239 if (!success) { 1240 wallpaper.width = -1; 1241 wallpaper.height = -1; 1242 wallpaper.padding.set(0, 0, 0, 0); 1243 wallpaper.name = ""; 1244 } 1245 1246 // We always want to have some reasonable width hint. 1247 int baseSize = getMaximumSizeDimension(); 1248 if (wallpaper.width < baseSize) { 1249 wallpaper.width = baseSize; 1250 } 1251 if (wallpaper.height < baseSize) { 1252 wallpaper.height = baseSize; 1253 } 1254 } 1255 1256 private int getMaximumSizeDimension() { 1257 WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE); 1258 Display d = wm.getDefaultDisplay(); 1259 return d.getMaximumSizeDimension(); 1260 } 1261 1262 // Called by SystemBackupAgent after files are restored to disk. 1263 public void settingsRestored() { 1264 // Verify caller is the system 1265 if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) { 1266 throw new RuntimeException("settingsRestored() can only be called from the system process"); 1267 } 1268 // TODO: If necessary, make it work for secondary users as well. This currently assumes 1269 // restores only to the primary user 1270 if (DEBUG) Slog.v(TAG, "settingsRestored"); 1271 WallpaperData wallpaper = null; 1272 boolean success = false; 1273 synchronized (mLock) { 1274 loadSettingsLocked(0); 1275 wallpaper = mWallpaperMap.get(0); 1276 if (wallpaper.nextWallpaperComponent != null 1277 && !wallpaper.nextWallpaperComponent.equals(mImageWallpaper)) { 1278 if (!bindWallpaperComponentLocked(wallpaper.nextWallpaperComponent, false, false, 1279 wallpaper, null)) { 1280 // No such live wallpaper or other failure; fall back to the default 1281 // live wallpaper (since the profile being restored indicated that the 1282 // user had selected a live rather than static one). 1283 bindWallpaperComponentLocked(null, false, false, wallpaper, null); 1284 } 1285 success = true; 1286 } else { 1287 // If there's a wallpaper name, we use that. If that can't be loaded, then we 1288 // use the default. 1289 if ("".equals(wallpaper.name)) { 1290 if (DEBUG) Slog.v(TAG, "settingsRestored: name is empty"); 1291 success = true; 1292 } else { 1293 if (DEBUG) Slog.v(TAG, "settingsRestored: attempting to restore named resource"); 1294 success = restoreNamedResourceLocked(wallpaper); 1295 } 1296 if (DEBUG) Slog.v(TAG, "settingsRestored: success=" + success); 1297 if (success) { 1298 bindWallpaperComponentLocked(wallpaper.nextWallpaperComponent, false, false, 1299 wallpaper, null); 1300 } 1301 } 1302 } 1303 1304 if (!success) { 1305 Slog.e(TAG, "Failed to restore wallpaper: '" + wallpaper.name + "'"); 1306 wallpaper.name = ""; 1307 getWallpaperDir(0).delete(); 1308 } 1309 1310 synchronized (mLock) { 1311 saveSettingsLocked(wallpaper); 1312 } 1313 } 1314 1315 boolean restoreNamedResourceLocked(WallpaperData wallpaper) { 1316 if (wallpaper.name.length() > 4 && "res:".equals(wallpaper.name.substring(0, 4))) { 1317 String resName = wallpaper.name.substring(4); 1318 1319 String pkg = null; 1320 int colon = resName.indexOf(':'); 1321 if (colon > 0) { 1322 pkg = resName.substring(0, colon); 1323 } 1324 1325 String ident = null; 1326 int slash = resName.lastIndexOf('/'); 1327 if (slash > 0) { 1328 ident = resName.substring(slash+1); 1329 } 1330 1331 String type = null; 1332 if (colon > 0 && slash > 0 && (slash-colon) > 1) { 1333 type = resName.substring(colon+1, slash); 1334 } 1335 1336 if (pkg != null && ident != null && type != null) { 1337 int resId = -1; 1338 InputStream res = null; 1339 FileOutputStream fos = null; 1340 try { 1341 Context c = mContext.createPackageContext(pkg, Context.CONTEXT_RESTRICTED); 1342 Resources r = c.getResources(); 1343 resId = r.getIdentifier(resName, null, null); 1344 if (resId == 0) { 1345 Slog.e(TAG, "couldn't resolve identifier pkg=" + pkg + " type=" + type 1346 + " ident=" + ident); 1347 return false; 1348 } 1349 1350 res = r.openRawResource(resId); 1351 if (wallpaper.wallpaperFile.exists()) { 1352 wallpaper.wallpaperFile.delete(); 1353 } 1354 fos = new FileOutputStream(wallpaper.wallpaperFile); 1355 1356 byte[] buffer = new byte[32768]; 1357 int amt; 1358 while ((amt=res.read(buffer)) > 0) { 1359 fos.write(buffer, 0, amt); 1360 } 1361 // mWallpaperObserver will notice the close and send the change broadcast 1362 1363 Slog.v(TAG, "Restored wallpaper: " + resName); 1364 return true; 1365 } catch (NameNotFoundException e) { 1366 Slog.e(TAG, "Package name " + pkg + " not found"); 1367 } catch (Resources.NotFoundException e) { 1368 Slog.e(TAG, "Resource not found: " + resId); 1369 } catch (IOException e) { 1370 Slog.e(TAG, "IOException while restoring wallpaper ", e); 1371 } finally { 1372 if (res != null) { 1373 try { 1374 res.close(); 1375 } catch (IOException ex) {} 1376 } 1377 if (fos != null) { 1378 FileUtils.sync(fos); 1379 try { 1380 fos.close(); 1381 } catch (IOException ex) {} 1382 } 1383 } 1384 } 1385 } 1386 return false; 1387 } 1388 1389 @Override 1390 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 1391 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 1392 != PackageManager.PERMISSION_GRANTED) { 1393 1394 pw.println("Permission Denial: can't dump wallpaper service from from pid=" 1395 + Binder.getCallingPid() 1396 + ", uid=" + Binder.getCallingUid()); 1397 return; 1398 } 1399 1400 synchronized (mLock) { 1401 pw.println("Current Wallpaper Service state:"); 1402 for (int i = 0; i < mWallpaperMap.size(); i++) { 1403 WallpaperData wallpaper = mWallpaperMap.valueAt(i); 1404 pw.println(" User " + wallpaper.userId + ":"); 1405 pw.print(" mWidth="); 1406 pw.print(wallpaper.width); 1407 pw.print(" mHeight="); 1408 pw.println(wallpaper.height); 1409 pw.print(" mPadding="); pw.println(wallpaper.padding); 1410 pw.print(" mName="); pw.println(wallpaper.name); 1411 pw.print(" mWallpaperComponent="); pw.println(wallpaper.wallpaperComponent); 1412 if (wallpaper.connection != null) { 1413 WallpaperConnection conn = wallpaper.connection; 1414 pw.print(" Wallpaper connection "); 1415 pw.print(conn); 1416 pw.println(":"); 1417 if (conn.mInfo != null) { 1418 pw.print(" mInfo.component="); 1419 pw.println(conn.mInfo.getComponent()); 1420 } 1421 pw.print(" mToken="); 1422 pw.println(conn.mToken); 1423 pw.print(" mService="); 1424 pw.println(conn.mService); 1425 pw.print(" mEngine="); 1426 pw.println(conn.mEngine); 1427 pw.print(" mLastDiedTime="); 1428 pw.println(wallpaper.lastDiedTime - SystemClock.uptimeMillis()); 1429 } 1430 } 1431 } 1432 } 1433} 1434