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