WallpaperManagerService.java revision 55a302402be3240c9e3289351c01e1cd2e853bc8
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.wallpaper; 18 19import static android.os.ParcelFileDescriptor.*; 20 21import android.app.ActivityManagerNative; 22import android.app.AppGlobals; 23import android.app.AppOpsManager; 24import android.app.IUserSwitchObserver; 25import android.app.IWallpaperManager; 26import android.app.IWallpaperManagerCallback; 27import android.app.PendingIntent; 28import android.app.WallpaperInfo; 29import android.app.WallpaperManager; 30import android.app.backup.BackupManager; 31import android.app.backup.WallpaperBackupHelper; 32import android.content.BroadcastReceiver; 33import android.content.ComponentName; 34import android.content.Context; 35import android.content.Intent; 36import android.content.IntentFilter; 37import android.content.ServiceConnection; 38import android.content.pm.IPackageManager; 39import android.content.pm.PackageManager; 40import android.content.pm.ResolveInfo; 41import android.content.pm.ServiceInfo; 42import android.content.pm.PackageManager.NameNotFoundException; 43import android.content.pm.UserInfo; 44import android.content.res.Resources; 45import android.graphics.Point; 46import android.graphics.Rect; 47import android.os.Binder; 48import android.os.Bundle; 49import android.os.Environment; 50import android.os.FileUtils; 51import android.os.IBinder; 52import android.os.IRemoteCallback; 53import android.os.RemoteException; 54import android.os.FileObserver; 55import android.os.ParcelFileDescriptor; 56import android.os.RemoteCallbackList; 57import android.os.SELinux; 58import android.os.ServiceManager; 59import android.os.SystemClock; 60import android.os.UserHandle; 61import android.os.UserManager; 62import android.service.wallpaper.IWallpaperConnection; 63import android.service.wallpaper.IWallpaperEngine; 64import android.service.wallpaper.IWallpaperService; 65import android.service.wallpaper.WallpaperService; 66import android.util.EventLog; 67import android.util.Slog; 68import android.util.SparseArray; 69import android.util.Xml; 70import android.view.Display; 71import android.view.IWindowManager; 72import android.view.WindowManager; 73 74import java.io.FileDescriptor; 75import java.io.IOException; 76import java.io.InputStream; 77import java.io.File; 78import java.io.FileNotFoundException; 79import java.io.FileInputStream; 80import java.io.FileOutputStream; 81import java.io.PrintWriter; 82import java.nio.charset.StandardCharsets; 83import java.util.List; 84 85import org.xmlpull.v1.XmlPullParser; 86import org.xmlpull.v1.XmlPullParserException; 87import org.xmlpull.v1.XmlSerializer; 88 89import com.android.internal.content.PackageMonitor; 90import com.android.internal.util.FastXmlSerializer; 91import com.android.internal.util.JournaledFile; 92import com.android.internal.R; 93import com.android.server.EventLogTags; 94 95public class WallpaperManagerService extends IWallpaperManager.Stub { 96 static final String TAG = "WallpaperManagerService"; 97 static final boolean DEBUG = false; 98 99 final Object mLock = new Object[0]; 100 101 /** 102 * Minimum time between crashes of a wallpaper service for us to consider 103 * restarting it vs. just reverting to the static wallpaper. 104 */ 105 static final long MIN_WALLPAPER_CRASH_TIME = 10000; 106 static final int MAX_WALLPAPER_COMPONENT_LOG_LENGTH = 128; 107 static final String WALLPAPER = "wallpaper"; 108 static final String WALLPAPER_INFO = "wallpaper_info.xml"; 109 110 /** 111 * Observes the wallpaper for changes and notifies all IWallpaperServiceCallbacks 112 * that the wallpaper has changed. The CREATE is triggered when there is no 113 * wallpaper set and is created for the first time. The CLOSE_WRITE is triggered 114 * everytime the wallpaper is changed. 115 */ 116 private class WallpaperObserver extends FileObserver { 117 118 final WallpaperData mWallpaper; 119 final File mWallpaperDir; 120 final File mWallpaperFile; 121 final File mWallpaperInfoFile; 122 123 public WallpaperObserver(WallpaperData wallpaper) { 124 super(getWallpaperDir(wallpaper.userId).getAbsolutePath(), 125 CLOSE_WRITE | MOVED_TO | DELETE | DELETE_SELF); 126 mWallpaperDir = getWallpaperDir(wallpaper.userId); 127 mWallpaper = wallpaper; 128 mWallpaperFile = new File(mWallpaperDir, WALLPAPER); 129 mWallpaperInfoFile = new File(mWallpaperDir, WALLPAPER_INFO); 130 } 131 132 @Override 133 public void onEvent(int event, String path) { 134 if (path == null) { 135 return; 136 } 137 synchronized (mLock) { 138 File changedFile = new File(mWallpaperDir, path); 139 if (mWallpaperFile.equals(changedFile) 140 || mWallpaperInfoFile.equals(changedFile)) { 141 // changing the wallpaper means we'll need to back up the new one 142 long origId = Binder.clearCallingIdentity(); 143 BackupManager bm = new BackupManager(mContext); 144 bm.dataChanged(); 145 Binder.restoreCallingIdentity(origId); 146 } 147 if (mWallpaperFile.equals(changedFile)) { 148 notifyCallbacksLocked(mWallpaper); 149 final boolean written = (event == CLOSE_WRITE || event == MOVED_TO); 150 if (mWallpaper.wallpaperComponent == null 151 || event != CLOSE_WRITE // includes the MOVED_TO case 152 || mWallpaper.imageWallpaperPending) { 153 if (written) { 154 mWallpaper.imageWallpaperPending = false; 155 } 156 bindWallpaperComponentLocked(mImageWallpaper, true, 157 false, mWallpaper, null); 158 saveSettingsLocked(mWallpaper); 159 } 160 } 161 } 162 } 163 } 164 165 final Context mContext; 166 final IWindowManager mIWindowManager; 167 final IPackageManager mIPackageManager; 168 final MyPackageMonitor mMonitor; 169 final AppOpsManager mAppOpsManager; 170 WallpaperData mLastWallpaper; 171 172 /** 173 * Name of the component used to display bitmap wallpapers from either the gallery or 174 * built-in wallpapers. 175 */ 176 final ComponentName mImageWallpaper; 177 178 SparseArray<WallpaperData> mWallpaperMap = new SparseArray<WallpaperData>(); 179 180 int mCurrentUserId; 181 182 static class WallpaperData { 183 184 int userId; 185 186 File wallpaperFile; 187 188 /** 189 * Client is currently writing a new image wallpaper. 190 */ 191 boolean imageWallpaperPending; 192 193 /** 194 * Resource name if using a picture from the wallpaper gallery 195 */ 196 String name = ""; 197 198 /** 199 * The component name of the currently set live wallpaper. 200 */ 201 ComponentName wallpaperComponent; 202 203 /** 204 * The component name of the wallpaper that should be set next. 205 */ 206 ComponentName nextWallpaperComponent; 207 208 WallpaperConnection connection; 209 long lastDiedTime; 210 boolean wallpaperUpdating; 211 WallpaperObserver wallpaperObserver; 212 213 /** 214 * List of callbacks registered they should each be notified when the wallpaper is changed. 215 */ 216 private RemoteCallbackList<IWallpaperManagerCallback> callbacks 217 = new RemoteCallbackList<IWallpaperManagerCallback>(); 218 219 int width = -1; 220 int height = -1; 221 222 final Rect padding = new Rect(0, 0, 0, 0); 223 224 WallpaperData(int userId) { 225 this.userId = userId; 226 wallpaperFile = new File(getWallpaperDir(userId), WALLPAPER); 227 } 228 } 229 230 class WallpaperConnection extends IWallpaperConnection.Stub 231 implements ServiceConnection { 232 final WallpaperInfo mInfo; 233 final Binder mToken = new Binder(); 234 IWallpaperService mService; 235 IWallpaperEngine mEngine; 236 WallpaperData mWallpaper; 237 IRemoteCallback mReply; 238 239 boolean mDimensionsChanged = false; 240 boolean mPaddingChanged = false; 241 242 public WallpaperConnection(WallpaperInfo info, WallpaperData wallpaper) { 243 mInfo = info; 244 mWallpaper = wallpaper; 245 } 246 247 @Override 248 public void onServiceConnected(ComponentName name, IBinder service) { 249 synchronized (mLock) { 250 if (mWallpaper.connection == this) { 251 mService = IWallpaperService.Stub.asInterface(service); 252 attachServiceLocked(this, mWallpaper); 253 // XXX should probably do saveSettingsLocked() later 254 // when we have an engine, but I'm not sure about 255 // locking there and anyway we always need to be able to 256 // recover if there is something wrong. 257 saveSettingsLocked(mWallpaper); 258 } 259 } 260 } 261 262 @Override 263 public void onServiceDisconnected(ComponentName name) { 264 synchronized (mLock) { 265 mService = null; 266 mEngine = null; 267 if (mWallpaper.connection == this) { 268 Slog.w(TAG, "Wallpaper service gone: " + mWallpaper.wallpaperComponent); 269 if (!mWallpaper.wallpaperUpdating 270 && mWallpaper.userId == mCurrentUserId) { 271 // There is a race condition which causes 272 // {@link #mWallpaper.wallpaperUpdating} to be false even if it is 273 // currently updating since the broadcast notifying us is async. 274 // This race is overcome by the general rule that we only reset the 275 // wallpaper if its service was shut down twice 276 // during {@link #MIN_WALLPAPER_CRASH_TIME} millis. 277 if (mWallpaper.lastDiedTime != 0 278 && mWallpaper.lastDiedTime + MIN_WALLPAPER_CRASH_TIME 279 > SystemClock.uptimeMillis()) { 280 Slog.w(TAG, "Reverting to built-in wallpaper!"); 281 clearWallpaperLocked(true, mWallpaper.userId, null); 282 } else { 283 mWallpaper.lastDiedTime = SystemClock.uptimeMillis(); 284 } 285 final String flattened = name.flattenToString(); 286 EventLog.writeEvent(EventLogTags.WP_WALLPAPER_CRASHED, 287 flattened.substring(0, Math.min(flattened.length(), 288 MAX_WALLPAPER_COMPONENT_LOG_LENGTH))); 289 } 290 } 291 } 292 } 293 294 @Override 295 public void attachEngine(IWallpaperEngine engine) { 296 synchronized (mLock) { 297 mEngine = engine; 298 if (mDimensionsChanged) { 299 try { 300 mEngine.setDesiredSize(mWallpaper.width, mWallpaper.height); 301 } catch (RemoteException e) { 302 Slog.w(TAG, "Failed to set wallpaper dimensions", e); 303 } 304 mDimensionsChanged = false; 305 } 306 if (mPaddingChanged) { 307 try { 308 mEngine.setDisplayPadding(mWallpaper.padding); 309 } catch (RemoteException e) { 310 Slog.w(TAG, "Failed to set wallpaper padding", e); 311 } 312 mPaddingChanged = false; 313 } 314 } 315 } 316 317 @Override 318 public void engineShown(IWallpaperEngine engine) { 319 synchronized (mLock) { 320 if (mReply != null) { 321 long ident = Binder.clearCallingIdentity(); 322 try { 323 mReply.sendResult(null); 324 } catch (RemoteException e) { 325 Binder.restoreCallingIdentity(ident); 326 } 327 mReply = null; 328 } 329 } 330 } 331 332 @Override 333 public ParcelFileDescriptor setWallpaper(String name) { 334 synchronized (mLock) { 335 if (mWallpaper.connection == this) { 336 return updateWallpaperBitmapLocked(name, mWallpaper); 337 } 338 return null; 339 } 340 } 341 } 342 343 class MyPackageMonitor extends PackageMonitor { 344 @Override 345 public void onPackageUpdateFinished(String packageName, int uid) { 346 synchronized (mLock) { 347 if (mCurrentUserId != getChangingUserId()) { 348 return; 349 } 350 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 351 if (wallpaper != null) { 352 if (wallpaper.wallpaperComponent != null 353 && wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 354 wallpaper.wallpaperUpdating = false; 355 ComponentName comp = wallpaper.wallpaperComponent; 356 clearWallpaperComponentLocked(wallpaper); 357 if (!bindWallpaperComponentLocked(comp, false, false, 358 wallpaper, null)) { 359 Slog.w(TAG, "Wallpaper no longer available; reverting to default"); 360 clearWallpaperLocked(false, wallpaper.userId, null); 361 } 362 } 363 } 364 } 365 } 366 367 @Override 368 public void onPackageModified(String packageName) { 369 synchronized (mLock) { 370 if (mCurrentUserId != getChangingUserId()) { 371 return; 372 } 373 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 374 if (wallpaper != null) { 375 if (wallpaper.wallpaperComponent == null 376 || !wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 377 return; 378 } 379 doPackagesChangedLocked(true, wallpaper); 380 } 381 } 382 } 383 384 @Override 385 public void onPackageUpdateStarted(String packageName, int uid) { 386 synchronized (mLock) { 387 if (mCurrentUserId != getChangingUserId()) { 388 return; 389 } 390 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 391 if (wallpaper != null) { 392 if (wallpaper.wallpaperComponent != null 393 && wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 394 wallpaper.wallpaperUpdating = true; 395 } 396 } 397 } 398 } 399 400 @Override 401 public boolean onHandleForceStop(Intent intent, String[] packages, int uid, boolean doit) { 402 synchronized (mLock) { 403 boolean changed = false; 404 if (mCurrentUserId != getChangingUserId()) { 405 return false; 406 } 407 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 408 if (wallpaper != null) { 409 boolean res = doPackagesChangedLocked(doit, wallpaper); 410 changed |= res; 411 } 412 return changed; 413 } 414 } 415 416 @Override 417 public void onSomePackagesChanged() { 418 synchronized (mLock) { 419 if (mCurrentUserId != getChangingUserId()) { 420 return; 421 } 422 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 423 if (wallpaper != null) { 424 doPackagesChangedLocked(true, wallpaper); 425 } 426 } 427 } 428 429 boolean doPackagesChangedLocked(boolean doit, WallpaperData wallpaper) { 430 boolean changed = false; 431 if (wallpaper.wallpaperComponent != null) { 432 int change = isPackageDisappearing(wallpaper.wallpaperComponent 433 .getPackageName()); 434 if (change == PACKAGE_PERMANENT_CHANGE 435 || change == PACKAGE_TEMPORARY_CHANGE) { 436 changed = true; 437 if (doit) { 438 Slog.w(TAG, "Wallpaper uninstalled, removing: " 439 + wallpaper.wallpaperComponent); 440 clearWallpaperLocked(false, wallpaper.userId, null); 441 } 442 } 443 } 444 if (wallpaper.nextWallpaperComponent != null) { 445 int change = isPackageDisappearing(wallpaper.nextWallpaperComponent 446 .getPackageName()); 447 if (change == PACKAGE_PERMANENT_CHANGE 448 || change == PACKAGE_TEMPORARY_CHANGE) { 449 wallpaper.nextWallpaperComponent = null; 450 } 451 } 452 if (wallpaper.wallpaperComponent != null 453 && isPackageModified(wallpaper.wallpaperComponent.getPackageName())) { 454 try { 455 mContext.getPackageManager().getServiceInfo( 456 wallpaper.wallpaperComponent, 0); 457 } catch (NameNotFoundException e) { 458 Slog.w(TAG, "Wallpaper component gone, removing: " 459 + wallpaper.wallpaperComponent); 460 clearWallpaperLocked(false, wallpaper.userId, null); 461 } 462 } 463 if (wallpaper.nextWallpaperComponent != null 464 && isPackageModified(wallpaper.nextWallpaperComponent.getPackageName())) { 465 try { 466 mContext.getPackageManager().getServiceInfo( 467 wallpaper.nextWallpaperComponent, 0); 468 } catch (NameNotFoundException e) { 469 wallpaper.nextWallpaperComponent = null; 470 } 471 } 472 return changed; 473 } 474 } 475 476 public WallpaperManagerService(Context context) { 477 if (DEBUG) Slog.v(TAG, "WallpaperService startup"); 478 mContext = context; 479 mImageWallpaper = ComponentName.unflattenFromString( 480 context.getResources().getString(R.string.image_wallpaper_component)); 481 mIWindowManager = IWindowManager.Stub.asInterface( 482 ServiceManager.getService(Context.WINDOW_SERVICE)); 483 mIPackageManager = AppGlobals.getPackageManager(); 484 mAppOpsManager = (AppOpsManager) mContext.getSystemService(Context.APP_OPS_SERVICE); 485 mMonitor = new MyPackageMonitor(); 486 mMonitor.register(context, null, UserHandle.ALL, true); 487 getWallpaperDir(UserHandle.USER_OWNER).mkdirs(); 488 loadSettingsLocked(UserHandle.USER_OWNER); 489 } 490 491 private static File getWallpaperDir(int userId) { 492 return Environment.getUserSystemDirectory(userId); 493 } 494 495 @Override 496 protected void finalize() throws Throwable { 497 super.finalize(); 498 for (int i = 0; i < mWallpaperMap.size(); i++) { 499 WallpaperData wallpaper = mWallpaperMap.valueAt(i); 500 wallpaper.wallpaperObserver.stopWatching(); 501 } 502 } 503 504 public void systemRunning() { 505 if (DEBUG) Slog.v(TAG, "systemReady"); 506 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.USER_OWNER); 507 switchWallpaper(wallpaper, null); 508 wallpaper.wallpaperObserver = new WallpaperObserver(wallpaper); 509 wallpaper.wallpaperObserver.startWatching(); 510 511 IntentFilter userFilter = new IntentFilter(); 512 userFilter.addAction(Intent.ACTION_USER_REMOVED); 513 userFilter.addAction(Intent.ACTION_USER_STOPPING); 514 mContext.registerReceiver(new BroadcastReceiver() { 515 @Override 516 public void onReceive(Context context, Intent intent) { 517 String action = intent.getAction(); 518 if (Intent.ACTION_USER_REMOVED.equals(action)) { 519 onRemoveUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 520 UserHandle.USER_NULL)); 521 } 522 // TODO: Race condition causing problems when cleaning up on stopping a user. 523 // Comment this out for now. 524 // else if (Intent.ACTION_USER_STOPPING.equals(action)) { 525 // onStoppingUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 526 // UserHandle.USER_NULL)); 527 // } 528 } 529 }, userFilter); 530 531 try { 532 ActivityManagerNative.getDefault().registerUserSwitchObserver( 533 new IUserSwitchObserver.Stub() { 534 @Override 535 public void onUserSwitching(int newUserId, IRemoteCallback reply) { 536 switchUser(newUserId, reply); 537 } 538 539 @Override 540 public void onUserSwitchComplete(int newUserId) throws RemoteException { 541 } 542 543 @Override 544 public void onForegroundProfileSwitch(int newProfileId) { 545 // Ignore. 546 } 547 }); 548 } catch (RemoteException e) { 549 // TODO Auto-generated catch block 550 e.printStackTrace(); 551 } 552 } 553 554 /** Called by SystemBackupAgent */ 555 public String getName() { 556 // Verify caller is the system 557 if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) { 558 throw new RuntimeException("getName() can only be called from the system process"); 559 } 560 synchronized (mLock) { 561 return mWallpaperMap.get(0).name; 562 } 563 } 564 565 void onStoppingUser(int userId) { 566 if (userId < 1) return; 567 synchronized (mLock) { 568 WallpaperData wallpaper = mWallpaperMap.get(userId); 569 if (wallpaper != null) { 570 if (wallpaper.wallpaperObserver != null) { 571 wallpaper.wallpaperObserver.stopWatching(); 572 wallpaper.wallpaperObserver = null; 573 } 574 mWallpaperMap.remove(userId); 575 } 576 } 577 } 578 579 void onRemoveUser(int userId) { 580 if (userId < 1) return; 581 synchronized (mLock) { 582 onStoppingUser(userId); 583 File wallpaperFile = new File(getWallpaperDir(userId), WALLPAPER); 584 wallpaperFile.delete(); 585 File wallpaperInfoFile = new File(getWallpaperDir(userId), WALLPAPER_INFO); 586 wallpaperInfoFile.delete(); 587 } 588 } 589 590 void switchUser(int userId, IRemoteCallback reply) { 591 synchronized (mLock) { 592 mCurrentUserId = userId; 593 WallpaperData wallpaper = getWallpaperSafeLocked(userId); 594 // Not started watching yet, in case wallpaper data was loaded for other reasons. 595 if (wallpaper.wallpaperObserver == null) { 596 wallpaper.wallpaperObserver = new WallpaperObserver(wallpaper); 597 wallpaper.wallpaperObserver.startWatching(); 598 } 599 switchWallpaper(wallpaper, reply); 600 } 601 } 602 603 void switchWallpaper(WallpaperData wallpaper, IRemoteCallback reply) { 604 synchronized (mLock) { 605 RuntimeException e = null; 606 try { 607 ComponentName cname = wallpaper.wallpaperComponent != null ? 608 wallpaper.wallpaperComponent : wallpaper.nextWallpaperComponent; 609 if (bindWallpaperComponentLocked(cname, true, false, wallpaper, reply)) { 610 return; 611 } 612 } catch (RuntimeException e1) { 613 e = e1; 614 } 615 Slog.w(TAG, "Failure starting previous wallpaper", e); 616 clearWallpaperLocked(false, wallpaper.userId, reply); 617 } 618 } 619 620 public void clearWallpaper(String callingPackage) { 621 if (DEBUG) Slog.v(TAG, "clearWallpaper"); 622 checkPermission(android.Manifest.permission.SET_WALLPAPER); 623 if (!isWallpaperSupported(callingPackage)) { 624 return; 625 } 626 synchronized (mLock) { 627 clearWallpaperLocked(false, UserHandle.getCallingUserId(), null); 628 } 629 } 630 631 void clearWallpaperLocked(boolean defaultFailed, int userId, IRemoteCallback reply) { 632 WallpaperData wallpaper = mWallpaperMap.get(userId); 633 if (wallpaper == null) { 634 return; 635 } 636 File f = new File(getWallpaperDir(userId), WALLPAPER); 637 if (f.exists()) { 638 f.delete(); 639 } 640 final long ident = Binder.clearCallingIdentity(); 641 try { 642 RuntimeException e = null; 643 try { 644 wallpaper.imageWallpaperPending = false; 645 if (userId != mCurrentUserId) return; 646 if (bindWallpaperComponentLocked(defaultFailed 647 ? mImageWallpaper 648 : null, true, false, wallpaper, reply)) { 649 return; 650 } 651 } catch (IllegalArgumentException e1) { 652 e = e1; 653 } 654 655 // This can happen if the default wallpaper component doesn't 656 // exist. This should be a system configuration problem, but 657 // let's not let it crash the system and just live with no 658 // wallpaper. 659 Slog.e(TAG, "Default wallpaper component not found!", e); 660 clearWallpaperComponentLocked(wallpaper); 661 if (reply != null) { 662 try { 663 reply.sendResult(null); 664 } catch (RemoteException e1) { 665 } 666 } 667 } finally { 668 Binder.restoreCallingIdentity(ident); 669 } 670 } 671 672 public boolean hasNamedWallpaper(String name) { 673 synchronized (mLock) { 674 List<UserInfo> users; 675 long ident = Binder.clearCallingIdentity(); 676 try { 677 users = ((UserManager) mContext.getSystemService(Context.USER_SERVICE)).getUsers(); 678 } finally { 679 Binder.restoreCallingIdentity(ident); 680 } 681 for (UserInfo user: users) { 682 // ignore managed profiles 683 if (user.isManagedProfile()) { 684 continue; 685 } 686 WallpaperData wd = mWallpaperMap.get(user.id); 687 if (wd == null) { 688 // User hasn't started yet, so load her settings to peek at the wallpaper 689 loadSettingsLocked(user.id); 690 wd = mWallpaperMap.get(user.id); 691 } 692 if (wd != null && name.equals(wd.name)) { 693 return true; 694 } 695 } 696 } 697 return false; 698 } 699 700 private Point getDefaultDisplaySize() { 701 Point p = new Point(); 702 WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE); 703 Display d = wm.getDefaultDisplay(); 704 d.getRealSize(p); 705 return p; 706 } 707 708 public void setDimensionHints(int width, int height, String callingPackage) 709 throws RemoteException { 710 checkPermission(android.Manifest.permission.SET_WALLPAPER_HINTS); 711 if (!isWallpaperSupported(callingPackage)) { 712 return; 713 } 714 synchronized (mLock) { 715 int userId = UserHandle.getCallingUserId(); 716 WallpaperData wallpaper = getWallpaperSafeLocked(userId); 717 if (width <= 0 || height <= 0) { 718 throw new IllegalArgumentException("width and height must be > 0"); 719 } 720 // Make sure it is at least as large as the display. 721 Point displaySize = getDefaultDisplaySize(); 722 width = Math.max(width, displaySize.x); 723 height = Math.max(height, displaySize.y); 724 725 if (width != wallpaper.width || height != wallpaper.height) { 726 wallpaper.width = width; 727 wallpaper.height = height; 728 saveSettingsLocked(wallpaper); 729 if (mCurrentUserId != userId) return; // Don't change the properties now 730 if (wallpaper.connection != null) { 731 if (wallpaper.connection.mEngine != null) { 732 try { 733 wallpaper.connection.mEngine.setDesiredSize( 734 width, height); 735 } catch (RemoteException e) { 736 } 737 notifyCallbacksLocked(wallpaper); 738 } else if (wallpaper.connection.mService != null) { 739 // We've attached to the service but the engine hasn't attached back to us 740 // yet. This means it will be created with the previous dimensions, so we 741 // need to update it to the new dimensions once it attaches. 742 wallpaper.connection.mDimensionsChanged = true; 743 } 744 } 745 } 746 } 747 } 748 749 public int getWidthHint() throws RemoteException { 750 synchronized (mLock) { 751 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.getCallingUserId()); 752 if (wallpaper != null) { 753 return wallpaper.width; 754 } else { 755 return 0; 756 } 757 } 758 } 759 760 public int getHeightHint() throws RemoteException { 761 synchronized (mLock) { 762 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.getCallingUserId()); 763 if (wallpaper != null) { 764 return wallpaper.height; 765 } else { 766 return 0; 767 } 768 } 769 } 770 771 public void setDisplayPadding(Rect padding, String callingPackage) { 772 checkPermission(android.Manifest.permission.SET_WALLPAPER_HINTS); 773 if (!isWallpaperSupported(callingPackage)) { 774 return; 775 } 776 synchronized (mLock) { 777 int userId = UserHandle.getCallingUserId(); 778 WallpaperData wallpaper = getWallpaperSafeLocked(userId); 779 if (padding.left < 0 || padding.top < 0 || padding.right < 0 || padding.bottom < 0) { 780 throw new IllegalArgumentException("padding must be positive: " + padding); 781 } 782 783 if (!padding.equals(wallpaper.padding)) { 784 wallpaper.padding.set(padding); 785 saveSettingsLocked(wallpaper); 786 if (mCurrentUserId != userId) return; // Don't change the properties now 787 if (wallpaper.connection != null) { 788 if (wallpaper.connection.mEngine != null) { 789 try { 790 wallpaper.connection.mEngine.setDisplayPadding(padding); 791 } catch (RemoteException e) { 792 } 793 notifyCallbacksLocked(wallpaper); 794 } else if (wallpaper.connection.mService != null) { 795 // We've attached to the service but the engine hasn't attached back to us 796 // yet. This means it will be created with the previous dimensions, so we 797 // need to update it to the new dimensions once it attaches. 798 wallpaper.connection.mPaddingChanged = true; 799 } 800 } 801 } 802 } 803 } 804 805 public ParcelFileDescriptor getWallpaper(IWallpaperManagerCallback cb, 806 Bundle outParams) { 807 synchronized (mLock) { 808 // This returns the current user's wallpaper, if called by a system service. Else it 809 // returns the wallpaper for the calling user. 810 int callingUid = Binder.getCallingUid(); 811 int wallpaperUserId = 0; 812 if (callingUid == android.os.Process.SYSTEM_UID) { 813 wallpaperUserId = mCurrentUserId; 814 } else { 815 wallpaperUserId = UserHandle.getUserId(callingUid); 816 } 817 WallpaperData wallpaper = mWallpaperMap.get(wallpaperUserId); 818 if (wallpaper == null) { 819 return null; 820 } 821 try { 822 if (outParams != null) { 823 outParams.putInt("width", wallpaper.width); 824 outParams.putInt("height", wallpaper.height); 825 } 826 wallpaper.callbacks.register(cb); 827 File f = new File(getWallpaperDir(wallpaperUserId), WALLPAPER); 828 if (!f.exists()) { 829 return null; 830 } 831 return ParcelFileDescriptor.open(f, MODE_READ_ONLY); 832 } catch (FileNotFoundException e) { 833 /* Shouldn't happen as we check to see if the file exists */ 834 Slog.w(TAG, "Error getting wallpaper", e); 835 } 836 return null; 837 } 838 } 839 840 public WallpaperInfo getWallpaperInfo() { 841 int userId = UserHandle.getCallingUserId(); 842 synchronized (mLock) { 843 WallpaperData wallpaper = mWallpaperMap.get(userId); 844 if (wallpaper != null && wallpaper.connection != null) { 845 return wallpaper.connection.mInfo; 846 } 847 return null; 848 } 849 } 850 851 public ParcelFileDescriptor setWallpaper(String name, String callingPackage) { 852 checkPermission(android.Manifest.permission.SET_WALLPAPER); 853 if (!isWallpaperSupported(callingPackage)) { 854 return null; 855 } 856 synchronized (mLock) { 857 if (DEBUG) Slog.v(TAG, "setWallpaper"); 858 int userId = UserHandle.getCallingUserId(); 859 WallpaperData wallpaper = getWallpaperSafeLocked(userId); 860 final long ident = Binder.clearCallingIdentity(); 861 try { 862 ParcelFileDescriptor pfd = updateWallpaperBitmapLocked(name, wallpaper); 863 if (pfd != null) { 864 wallpaper.imageWallpaperPending = true; 865 } 866 return pfd; 867 } finally { 868 Binder.restoreCallingIdentity(ident); 869 } 870 } 871 } 872 873 ParcelFileDescriptor updateWallpaperBitmapLocked(String name, WallpaperData wallpaper) { 874 if (name == null) name = ""; 875 try { 876 File dir = getWallpaperDir(wallpaper.userId); 877 if (!dir.exists()) { 878 dir.mkdir(); 879 FileUtils.setPermissions( 880 dir.getPath(), 881 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 882 -1, -1); 883 } 884 File file = new File(dir, WALLPAPER); 885 ParcelFileDescriptor fd = ParcelFileDescriptor.open(file, 886 MODE_CREATE|MODE_READ_WRITE|MODE_TRUNCATE); 887 if (!SELinux.restorecon(file)) { 888 return null; 889 } 890 wallpaper.name = name; 891 return fd; 892 } catch (FileNotFoundException e) { 893 Slog.w(TAG, "Error setting wallpaper", e); 894 } 895 return null; 896 } 897 898 public void setWallpaperComponentChecked(ComponentName name, String callingPackage) { 899 if (isWallpaperSupported(callingPackage)) { 900 setWallpaperComponent(name); 901 } 902 } 903 904 // ToDo: Remove this version of the function 905 public void setWallpaperComponent(ComponentName name) { 906 checkPermission(android.Manifest.permission.SET_WALLPAPER_COMPONENT); 907 synchronized (mLock) { 908 if (DEBUG) Slog.v(TAG, "setWallpaperComponent name=" + name); 909 int userId = UserHandle.getCallingUserId(); 910 WallpaperData wallpaper = mWallpaperMap.get(userId); 911 if (wallpaper == null) { 912 throw new IllegalStateException("Wallpaper not yet initialized for user " + userId); 913 } 914 final long ident = Binder.clearCallingIdentity(); 915 try { 916 wallpaper.imageWallpaperPending = false; 917 bindWallpaperComponentLocked(name, false, true, wallpaper, null); 918 } finally { 919 Binder.restoreCallingIdentity(ident); 920 } 921 } 922 } 923 924 boolean bindWallpaperComponentLocked(ComponentName componentName, boolean force, 925 boolean fromUser, WallpaperData wallpaper, IRemoteCallback reply) { 926 if (DEBUG) Slog.v(TAG, "bindWallpaperComponentLocked: componentName=" + componentName); 927 // Has the component changed? 928 if (!force) { 929 if (wallpaper.connection != null) { 930 if (wallpaper.wallpaperComponent == null) { 931 if (componentName == null) { 932 if (DEBUG) Slog.v(TAG, "bindWallpaperComponentLocked: still using default"); 933 // Still using default wallpaper. 934 return true; 935 } 936 } else if (wallpaper.wallpaperComponent.equals(componentName)) { 937 // Changing to same wallpaper. 938 if (DEBUG) Slog.v(TAG, "same wallpaper"); 939 return true; 940 } 941 } 942 } 943 944 try { 945 if (componentName == null) { 946 componentName = WallpaperManager.getDefaultWallpaperComponent(mContext); 947 if (componentName == null) { 948 // Fall back to static image wallpaper 949 componentName = mImageWallpaper; 950 //clearWallpaperComponentLocked(); 951 //return; 952 if (DEBUG) Slog.v(TAG, "Using image wallpaper"); 953 } 954 } 955 int serviceUserId = wallpaper.userId; 956 ServiceInfo si = mIPackageManager.getServiceInfo(componentName, 957 PackageManager.GET_META_DATA | PackageManager.GET_PERMISSIONS, serviceUserId); 958 if (si == null) { 959 // The wallpaper component we're trying to use doesn't exist 960 Slog.w(TAG, "Attempted wallpaper " + componentName + " is unavailable"); 961 return false; 962 } 963 if (!android.Manifest.permission.BIND_WALLPAPER.equals(si.permission)) { 964 String msg = "Selected service does not require " 965 + android.Manifest.permission.BIND_WALLPAPER 966 + ": " + componentName; 967 if (fromUser) { 968 throw new SecurityException(msg); 969 } 970 Slog.w(TAG, msg); 971 return false; 972 } 973 974 WallpaperInfo wi = null; 975 976 Intent intent = new Intent(WallpaperService.SERVICE_INTERFACE); 977 if (componentName != null && !componentName.equals(mImageWallpaper)) { 978 // Make sure the selected service is actually a wallpaper service. 979 List<ResolveInfo> ris = 980 mIPackageManager.queryIntentServices(intent, 981 intent.resolveTypeIfNeeded(mContext.getContentResolver()), 982 PackageManager.GET_META_DATA, serviceUserId); 983 for (int i=0; i<ris.size(); i++) { 984 ServiceInfo rsi = ris.get(i).serviceInfo; 985 if (rsi.name.equals(si.name) && 986 rsi.packageName.equals(si.packageName)) { 987 try { 988 wi = new WallpaperInfo(mContext, ris.get(i)); 989 } catch (XmlPullParserException e) { 990 if (fromUser) { 991 throw new IllegalArgumentException(e); 992 } 993 Slog.w(TAG, e); 994 return false; 995 } catch (IOException e) { 996 if (fromUser) { 997 throw new IllegalArgumentException(e); 998 } 999 Slog.w(TAG, e); 1000 return false; 1001 } 1002 break; 1003 } 1004 } 1005 if (wi == null) { 1006 String msg = "Selected service is not a wallpaper: " 1007 + componentName; 1008 if (fromUser) { 1009 throw new SecurityException(msg); 1010 } 1011 Slog.w(TAG, msg); 1012 return false; 1013 } 1014 } 1015 1016 // Bind the service! 1017 if (DEBUG) Slog.v(TAG, "Binding to:" + componentName); 1018 WallpaperConnection newConn = new WallpaperConnection(wi, wallpaper); 1019 intent.setComponent(componentName); 1020 intent.putExtra(Intent.EXTRA_CLIENT_LABEL, 1021 com.android.internal.R.string.wallpaper_binding_label); 1022 intent.putExtra(Intent.EXTRA_CLIENT_INTENT, PendingIntent.getActivityAsUser( 1023 mContext, 0, 1024 Intent.createChooser(new Intent(Intent.ACTION_SET_WALLPAPER), 1025 mContext.getText(com.android.internal.R.string.chooser_wallpaper)), 1026 0, null, new UserHandle(serviceUserId))); 1027 if (!mContext.bindServiceAsUser(intent, newConn, 1028 Context.BIND_AUTO_CREATE | Context.BIND_SHOWING_UI 1029 | Context.BIND_FOREGROUND_SERVICE_WHILE_AWAKE, 1030 new UserHandle(serviceUserId))) { 1031 String msg = "Unable to bind service: " 1032 + componentName; 1033 if (fromUser) { 1034 throw new IllegalArgumentException(msg); 1035 } 1036 Slog.w(TAG, msg); 1037 return false; 1038 } 1039 if (wallpaper.userId == mCurrentUserId && mLastWallpaper != null) { 1040 detachWallpaperLocked(mLastWallpaper); 1041 } 1042 wallpaper.wallpaperComponent = componentName; 1043 wallpaper.connection = newConn; 1044 newConn.mReply = reply; 1045 try { 1046 if (wallpaper.userId == mCurrentUserId) { 1047 if (DEBUG) 1048 Slog.v(TAG, "Adding window token: " + newConn.mToken); 1049 mIWindowManager.addWindowToken(newConn.mToken, 1050 WindowManager.LayoutParams.TYPE_WALLPAPER); 1051 mLastWallpaper = wallpaper; 1052 } 1053 } catch (RemoteException e) { 1054 } 1055 } catch (RemoteException e) { 1056 String msg = "Remote exception for " + componentName + "\n" + e; 1057 if (fromUser) { 1058 throw new IllegalArgumentException(msg); 1059 } 1060 Slog.w(TAG, msg); 1061 return false; 1062 } 1063 return true; 1064 } 1065 1066 void detachWallpaperLocked(WallpaperData wallpaper) { 1067 if (wallpaper.connection != null) { 1068 if (wallpaper.connection.mReply != null) { 1069 try { 1070 wallpaper.connection.mReply.sendResult(null); 1071 } catch (RemoteException e) { 1072 } 1073 wallpaper.connection.mReply = null; 1074 } 1075 if (wallpaper.connection.mEngine != null) { 1076 try { 1077 wallpaper.connection.mEngine.destroy(); 1078 } catch (RemoteException e) { 1079 } 1080 } 1081 mContext.unbindService(wallpaper.connection); 1082 try { 1083 if (DEBUG) 1084 Slog.v(TAG, "Removing window token: " + wallpaper.connection.mToken); 1085 mIWindowManager.removeWindowToken(wallpaper.connection.mToken); 1086 } catch (RemoteException e) { 1087 } 1088 wallpaper.connection.mService = null; 1089 wallpaper.connection.mEngine = null; 1090 wallpaper.connection = null; 1091 } 1092 } 1093 1094 void clearWallpaperComponentLocked(WallpaperData wallpaper) { 1095 wallpaper.wallpaperComponent = null; 1096 detachWallpaperLocked(wallpaper); 1097 } 1098 1099 void attachServiceLocked(WallpaperConnection conn, WallpaperData wallpaper) { 1100 try { 1101 conn.mService.attach(conn, conn.mToken, 1102 WindowManager.LayoutParams.TYPE_WALLPAPER, false, 1103 wallpaper.width, wallpaper.height, wallpaper.padding); 1104 } catch (RemoteException e) { 1105 Slog.w(TAG, "Failed attaching wallpaper; clearing", e); 1106 if (!wallpaper.wallpaperUpdating) { 1107 bindWallpaperComponentLocked(null, false, false, wallpaper, null); 1108 } 1109 } 1110 } 1111 1112 private void notifyCallbacksLocked(WallpaperData wallpaper) { 1113 final int n = wallpaper.callbacks.beginBroadcast(); 1114 for (int i = 0; i < n; i++) { 1115 try { 1116 wallpaper.callbacks.getBroadcastItem(i).onWallpaperChanged(); 1117 } catch (RemoteException e) { 1118 1119 // The RemoteCallbackList will take care of removing 1120 // the dead object for us. 1121 } 1122 } 1123 wallpaper.callbacks.finishBroadcast(); 1124 final Intent intent = new Intent(Intent.ACTION_WALLPAPER_CHANGED); 1125 mContext.sendBroadcastAsUser(intent, new UserHandle(mCurrentUserId)); 1126 } 1127 1128 private void checkPermission(String permission) { 1129 if (PackageManager.PERMISSION_GRANTED!= mContext.checkCallingOrSelfPermission(permission)) { 1130 throw new SecurityException("Access denied to process: " + Binder.getCallingPid() 1131 + ", must have permission " + permission); 1132 } 1133 } 1134 1135 /** 1136 * Certain user types do not support wallpapers (e.g. managed profiles). The check is 1137 * implemented through through the OP_WRITE_WALLPAPER AppOp. 1138 */ 1139 public boolean isWallpaperSupported(String callingPackage) { 1140 return mAppOpsManager.checkOpNoThrow(AppOpsManager.OP_WRITE_WALLPAPER, Binder.getCallingUid(), 1141 callingPackage) == AppOpsManager.MODE_ALLOWED; 1142 } 1143 1144 private static JournaledFile makeJournaledFile(int userId) { 1145 final String base = new File(getWallpaperDir(userId), WALLPAPER_INFO).getAbsolutePath(); 1146 return new JournaledFile(new File(base), new File(base + ".tmp")); 1147 } 1148 1149 private void saveSettingsLocked(WallpaperData wallpaper) { 1150 JournaledFile journal = makeJournaledFile(wallpaper.userId); 1151 FileOutputStream stream = null; 1152 try { 1153 stream = new FileOutputStream(journal.chooseForWrite(), false); 1154 XmlSerializer out = new FastXmlSerializer(); 1155 out.setOutput(stream, StandardCharsets.UTF_8.name()); 1156 out.startDocument(null, true); 1157 1158 out.startTag(null, "wp"); 1159 out.attribute(null, "width", Integer.toString(wallpaper.width)); 1160 out.attribute(null, "height", Integer.toString(wallpaper.height)); 1161 if (wallpaper.padding.left != 0) { 1162 out.attribute(null, "paddingLeft", Integer.toString(wallpaper.padding.left)); 1163 } 1164 if (wallpaper.padding.top != 0) { 1165 out.attribute(null, "paddingTop", Integer.toString(wallpaper.padding.top)); 1166 } 1167 if (wallpaper.padding.right != 0) { 1168 out.attribute(null, "paddingRight", Integer.toString(wallpaper.padding.right)); 1169 } 1170 if (wallpaper.padding.bottom != 0) { 1171 out.attribute(null, "paddingBottom", Integer.toString(wallpaper.padding.bottom)); 1172 } 1173 out.attribute(null, "name", wallpaper.name); 1174 if (wallpaper.wallpaperComponent != null 1175 && !wallpaper.wallpaperComponent.equals(mImageWallpaper)) { 1176 out.attribute(null, "component", 1177 wallpaper.wallpaperComponent.flattenToShortString()); 1178 } 1179 out.endTag(null, "wp"); 1180 1181 out.endDocument(); 1182 stream.flush(); 1183 FileUtils.sync(stream); 1184 stream.close(); 1185 journal.commit(); 1186 } catch (IOException e) { 1187 try { 1188 if (stream != null) { 1189 stream.close(); 1190 } 1191 } catch (IOException ex) { 1192 // Ignore 1193 } 1194 journal.rollback(); 1195 } 1196 } 1197 1198 private void migrateFromOld() { 1199 File oldWallpaper = new File(WallpaperBackupHelper.WALLPAPER_IMAGE_KEY); 1200 File oldInfo = new File(WallpaperBackupHelper.WALLPAPER_INFO_KEY); 1201 if (oldWallpaper.exists()) { 1202 File newWallpaper = new File(getWallpaperDir(0), WALLPAPER); 1203 oldWallpaper.renameTo(newWallpaper); 1204 } 1205 if (oldInfo.exists()) { 1206 File newInfo = new File(getWallpaperDir(0), WALLPAPER_INFO); 1207 oldInfo.renameTo(newInfo); 1208 } 1209 } 1210 1211 private int getAttributeInt(XmlPullParser parser, String name, int defValue) { 1212 String value = parser.getAttributeValue(null, name); 1213 if (value == null) { 1214 return defValue; 1215 } 1216 return Integer.parseInt(value); 1217 } 1218 1219 /** 1220 * Sometimes it is expected the wallpaper map may not have a user's data. E.g. This could 1221 * happen during user switch. The async user switch observer may not have received 1222 * the event yet. We use this safe method when we don't care about this ordering and just 1223 * want to update the data. The data is going to be applied when the user switch observer 1224 * is eventually executed. 1225 */ 1226 private WallpaperData getWallpaperSafeLocked(int userId) { 1227 WallpaperData wallpaper = mWallpaperMap.get(userId); 1228 if (wallpaper == null) { 1229 loadSettingsLocked(userId); 1230 wallpaper = mWallpaperMap.get(userId); 1231 } 1232 return wallpaper; 1233 } 1234 1235 private void loadSettingsLocked(int userId) { 1236 if (DEBUG) Slog.v(TAG, "loadSettingsLocked"); 1237 1238 JournaledFile journal = makeJournaledFile(userId); 1239 FileInputStream stream = null; 1240 File file = journal.chooseForRead(); 1241 if (!file.exists()) { 1242 // This should only happen one time, when upgrading from a legacy system 1243 migrateFromOld(); 1244 } 1245 WallpaperData wallpaper = mWallpaperMap.get(userId); 1246 if (wallpaper == null) { 1247 wallpaper = new WallpaperData(userId); 1248 mWallpaperMap.put(userId, wallpaper); 1249 } 1250 boolean success = false; 1251 try { 1252 stream = new FileInputStream(file); 1253 XmlPullParser parser = Xml.newPullParser(); 1254 parser.setInput(stream, StandardCharsets.UTF_8.name()); 1255 1256 int type; 1257 do { 1258 type = parser.next(); 1259 if (type == XmlPullParser.START_TAG) { 1260 String tag = parser.getName(); 1261 if ("wp".equals(tag)) { 1262 wallpaper.width = Integer.parseInt(parser.getAttributeValue(null, "width")); 1263 wallpaper.height = Integer.parseInt(parser 1264 .getAttributeValue(null, "height")); 1265 wallpaper.padding.left = getAttributeInt(parser, "paddingLeft", 0); 1266 wallpaper.padding.top = getAttributeInt(parser, "paddingTop", 0); 1267 wallpaper.padding.right = getAttributeInt(parser, "paddingRight", 0); 1268 wallpaper.padding.bottom = getAttributeInt(parser, "paddingBottom", 0); 1269 wallpaper.name = parser.getAttributeValue(null, "name"); 1270 String comp = parser.getAttributeValue(null, "component"); 1271 wallpaper.nextWallpaperComponent = comp != null 1272 ? ComponentName.unflattenFromString(comp) 1273 : null; 1274 if (wallpaper.nextWallpaperComponent == null 1275 || "android".equals(wallpaper.nextWallpaperComponent 1276 .getPackageName())) { 1277 wallpaper.nextWallpaperComponent = mImageWallpaper; 1278 } 1279 1280 if (DEBUG) { 1281 Slog.v(TAG, "mWidth:" + wallpaper.width); 1282 Slog.v(TAG, "mHeight:" + wallpaper.height); 1283 Slog.v(TAG, "mName:" + wallpaper.name); 1284 Slog.v(TAG, "mNextWallpaperComponent:" 1285 + wallpaper.nextWallpaperComponent); 1286 } 1287 } 1288 } 1289 } while (type != XmlPullParser.END_DOCUMENT); 1290 success = true; 1291 } catch (FileNotFoundException e) { 1292 Slog.w(TAG, "no current wallpaper -- first boot?"); 1293 } catch (NullPointerException e) { 1294 Slog.w(TAG, "failed parsing " + file + " " + e); 1295 } catch (NumberFormatException e) { 1296 Slog.w(TAG, "failed parsing " + file + " " + e); 1297 } catch (XmlPullParserException e) { 1298 Slog.w(TAG, "failed parsing " + file + " " + e); 1299 } catch (IOException e) { 1300 Slog.w(TAG, "failed parsing " + file + " " + e); 1301 } catch (IndexOutOfBoundsException e) { 1302 Slog.w(TAG, "failed parsing " + file + " " + e); 1303 } 1304 try { 1305 if (stream != null) { 1306 stream.close(); 1307 } 1308 } catch (IOException e) { 1309 // Ignore 1310 } 1311 1312 if (!success) { 1313 wallpaper.width = -1; 1314 wallpaper.height = -1; 1315 wallpaper.padding.set(0, 0, 0, 0); 1316 wallpaper.name = ""; 1317 } 1318 1319 // We always want to have some reasonable width hint. 1320 int baseSize = getMaximumSizeDimension(); 1321 if (wallpaper.width < baseSize) { 1322 wallpaper.width = baseSize; 1323 } 1324 if (wallpaper.height < baseSize) { 1325 wallpaper.height = baseSize; 1326 } 1327 } 1328 1329 private int getMaximumSizeDimension() { 1330 WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE); 1331 Display d = wm.getDefaultDisplay(); 1332 return d.getMaximumSizeDimension(); 1333 } 1334 1335 // Called by SystemBackupAgent after files are restored to disk. 1336 public void settingsRestored() { 1337 // Verify caller is the system 1338 if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) { 1339 throw new RuntimeException("settingsRestored() can only be called from the system process"); 1340 } 1341 // TODO: If necessary, make it work for secondary users as well. This currently assumes 1342 // restores only to the primary user 1343 if (DEBUG) Slog.v(TAG, "settingsRestored"); 1344 WallpaperData wallpaper = null; 1345 boolean success = false; 1346 synchronized (mLock) { 1347 loadSettingsLocked(0); 1348 wallpaper = mWallpaperMap.get(0); 1349 if (wallpaper.nextWallpaperComponent != null 1350 && !wallpaper.nextWallpaperComponent.equals(mImageWallpaper)) { 1351 if (!bindWallpaperComponentLocked(wallpaper.nextWallpaperComponent, false, false, 1352 wallpaper, null)) { 1353 // No such live wallpaper or other failure; fall back to the default 1354 // live wallpaper (since the profile being restored indicated that the 1355 // user had selected a live rather than static one). 1356 bindWallpaperComponentLocked(null, false, false, wallpaper, null); 1357 } 1358 success = true; 1359 } else { 1360 // If there's a wallpaper name, we use that. If that can't be loaded, then we 1361 // use the default. 1362 if ("".equals(wallpaper.name)) { 1363 if (DEBUG) Slog.v(TAG, "settingsRestored: name is empty"); 1364 success = true; 1365 } else { 1366 if (DEBUG) Slog.v(TAG, "settingsRestored: attempting to restore named resource"); 1367 success = restoreNamedResourceLocked(wallpaper); 1368 } 1369 if (DEBUG) Slog.v(TAG, "settingsRestored: success=" + success); 1370 if (success) { 1371 bindWallpaperComponentLocked(wallpaper.nextWallpaperComponent, false, false, 1372 wallpaper, null); 1373 } 1374 } 1375 } 1376 1377 if (!success) { 1378 Slog.e(TAG, "Failed to restore wallpaper: '" + wallpaper.name + "'"); 1379 wallpaper.name = ""; 1380 getWallpaperDir(0).delete(); 1381 } 1382 1383 synchronized (mLock) { 1384 saveSettingsLocked(wallpaper); 1385 } 1386 } 1387 1388 boolean restoreNamedResourceLocked(WallpaperData wallpaper) { 1389 if (wallpaper.name.length() > 4 && "res:".equals(wallpaper.name.substring(0, 4))) { 1390 String resName = wallpaper.name.substring(4); 1391 1392 String pkg = null; 1393 int colon = resName.indexOf(':'); 1394 if (colon > 0) { 1395 pkg = resName.substring(0, colon); 1396 } 1397 1398 String ident = null; 1399 int slash = resName.lastIndexOf('/'); 1400 if (slash > 0) { 1401 ident = resName.substring(slash+1); 1402 } 1403 1404 String type = null; 1405 if (colon > 0 && slash > 0 && (slash-colon) > 1) { 1406 type = resName.substring(colon+1, slash); 1407 } 1408 1409 if (pkg != null && ident != null && type != null) { 1410 int resId = -1; 1411 InputStream res = null; 1412 FileOutputStream fos = null; 1413 try { 1414 Context c = mContext.createPackageContext(pkg, Context.CONTEXT_RESTRICTED); 1415 Resources r = c.getResources(); 1416 resId = r.getIdentifier(resName, null, null); 1417 if (resId == 0) { 1418 Slog.e(TAG, "couldn't resolve identifier pkg=" + pkg + " type=" + type 1419 + " ident=" + ident); 1420 return false; 1421 } 1422 1423 res = r.openRawResource(resId); 1424 if (wallpaper.wallpaperFile.exists()) { 1425 wallpaper.wallpaperFile.delete(); 1426 } 1427 fos = new FileOutputStream(wallpaper.wallpaperFile); 1428 1429 byte[] buffer = new byte[32768]; 1430 int amt; 1431 while ((amt=res.read(buffer)) > 0) { 1432 fos.write(buffer, 0, amt); 1433 } 1434 // mWallpaperObserver will notice the close and send the change broadcast 1435 1436 Slog.v(TAG, "Restored wallpaper: " + resName); 1437 return true; 1438 } catch (NameNotFoundException e) { 1439 Slog.e(TAG, "Package name " + pkg + " not found"); 1440 } catch (Resources.NotFoundException e) { 1441 Slog.e(TAG, "Resource not found: " + resId); 1442 } catch (IOException e) { 1443 Slog.e(TAG, "IOException while restoring wallpaper ", e); 1444 } finally { 1445 if (res != null) { 1446 try { 1447 res.close(); 1448 } catch (IOException ex) {} 1449 } 1450 if (fos != null) { 1451 FileUtils.sync(fos); 1452 try { 1453 fos.close(); 1454 } catch (IOException ex) {} 1455 } 1456 } 1457 } 1458 } 1459 return false; 1460 } 1461 1462 @Override 1463 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 1464 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 1465 != PackageManager.PERMISSION_GRANTED) { 1466 1467 pw.println("Permission Denial: can't dump wallpaper service from from pid=" 1468 + Binder.getCallingPid() 1469 + ", uid=" + Binder.getCallingUid()); 1470 return; 1471 } 1472 1473 synchronized (mLock) { 1474 pw.println("Current Wallpaper Service state:"); 1475 for (int i = 0; i < mWallpaperMap.size(); i++) { 1476 WallpaperData wallpaper = mWallpaperMap.valueAt(i); 1477 pw.println(" User " + wallpaper.userId + ":"); 1478 pw.print(" mWidth="); 1479 pw.print(wallpaper.width); 1480 pw.print(" mHeight="); 1481 pw.println(wallpaper.height); 1482 pw.print(" mPadding="); pw.println(wallpaper.padding); 1483 pw.print(" mName="); pw.println(wallpaper.name); 1484 pw.print(" mWallpaperComponent="); pw.println(wallpaper.wallpaperComponent); 1485 if (wallpaper.connection != null) { 1486 WallpaperConnection conn = wallpaper.connection; 1487 pw.print(" Wallpaper connection "); 1488 pw.print(conn); 1489 pw.println(":"); 1490 if (conn.mInfo != null) { 1491 pw.print(" mInfo.component="); 1492 pw.println(conn.mInfo.getComponent()); 1493 } 1494 pw.print(" mToken="); 1495 pw.println(conn.mToken); 1496 pw.print(" mService="); 1497 pw.println(conn.mService); 1498 pw.print(" mEngine="); 1499 pw.println(conn.mEngine); 1500 pw.print(" mLastDiedTime="); 1501 pw.println(wallpaper.lastDiedTime - SystemClock.uptimeMillis()); 1502 } 1503 } 1504 } 1505 } 1506} 1507