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 17 package com.android.server; 18 19 import static android.os.FileObserver.*; 20 import static android.os.ParcelFileDescriptor.*; 21 22 import android.app.IWallpaperManager; 23 import android.app.IWallpaperManagerCallback; 24 import android.app.PendingIntent; 25 import android.app.WallpaperInfo; 26 import android.app.backup.BackupManager; 27 import android.content.ComponentName; 28 import android.content.Context; 29 import android.content.Intent; 30 import android.content.ServiceConnection; 31 import android.content.pm.PackageManager; 32 import android.content.pm.ResolveInfo; 33 import android.content.pm.ServiceInfo; 34 import android.content.pm.PackageManager.NameNotFoundException; 35 import android.content.res.Resources; 36 import android.os.Binder; 37 import android.os.Bundle; 38 import android.os.IBinder; 39 import android.os.RemoteException; 40 import android.os.FileObserver; 41 import android.os.ParcelFileDescriptor; 42 import android.os.RemoteCallbackList; 43 import android.os.ServiceManager; 44 import android.os.SystemClock; 45 import android.service.wallpaper.IWallpaperConnection; 46 import android.service.wallpaper.IWallpaperEngine; 47 import android.service.wallpaper.IWallpaperService; 48 import android.service.wallpaper.WallpaperService; 49 import android.util.Slog; 50 import android.util.Xml; 51 import android.view.IWindowManager; 52 import android.view.WindowManager; 53 54 import java.io.FileDescriptor; 55 import java.io.IOException; 56 import java.io.InputStream; 57 import java.io.File; 58 import java.io.FileNotFoundException; 59 import java.io.FileInputStream; 60 import java.io.FileOutputStream; 61 import java.io.PrintWriter; 62 import java.util.List; 63 64 import org.xmlpull.v1.XmlPullParser; 65 import org.xmlpull.v1.XmlPullParserException; 66 import org.xmlpull.v1.XmlSerializer; 67 68 import com.android.internal.content.PackageMonitor; 69 import com.android.internal.service.wallpaper.ImageWallpaper; 70 import com.android.internal.util.FastXmlSerializer; 71 import com.android.internal.util.JournaledFile; 72 import com.android.server.DevicePolicyManagerService.ActiveAdmin; 73 import com.android.server.DevicePolicyManagerService.MyPackageMonitor; 74 75 class WallpaperManagerService extends IWallpaperManager.Stub { 76 static final String TAG = "WallpaperService"; 77 static final boolean DEBUG = false; 78 79 Object mLock = new Object(); 80 81 /** 82 * Minimum time between crashes of a wallpaper service for us to consider 83 * restarting it vs. just reverting to the static wallpaper. 84 */ 85 static final long MIN_WALLPAPER_CRASH_TIME = 10000; 86 87 static final File WALLPAPER_DIR = new File( 88 "/data/data/com.android.settings/files"); 89 static final String WALLPAPER = "wallpaper"; 90 static final File WALLPAPER_FILE = new File(WALLPAPER_DIR, WALLPAPER); 91 92 /** 93 * List of callbacks registered they should each be notified 94 * when the wallpaper is changed. 95 */ 96 private final RemoteCallbackList<IWallpaperManagerCallback> mCallbacks 97 = new RemoteCallbackList<IWallpaperManagerCallback>(); 98 99 /** 100 * Observes the wallpaper for changes and notifies all IWallpaperServiceCallbacks 101 * that the wallpaper has changed. The CREATE is triggered when there is no 102 * wallpaper set and is created for the first time. The CLOSE_WRITE is triggered 103 * everytime the wallpaper is changed. 104 */ 105 private final FileObserver mWallpaperObserver = new FileObserver( 106 WALLPAPER_DIR.getAbsolutePath(), CREATE | CLOSE_WRITE | DELETE | DELETE_SELF) { 107 @Override 108 public void onEvent(int event, String path) { 109 if (path == null) { 110 return; 111 } 112 synchronized (mLock) { 113 // changing the wallpaper means we'll need to back up the new one 114 long origId = Binder.clearCallingIdentity(); 115 BackupManager bm = new BackupManager(mContext); 116 bm.dataChanged(); 117 Binder.restoreCallingIdentity(origId); 118 119 File changedFile = new File(WALLPAPER_DIR, path); 120 if (WALLPAPER_FILE.equals(changedFile)) { 121 notifyCallbacksLocked(); 122 } 123 } 124 } 125 }; 126 127 final Context mContext; 128 final IWindowManager mIWindowManager; 129 final MyPackageMonitor mMonitor; 130 131 int mWidth = -1; 132 int mHeight = -1; 133 134 /** 135 * Resource name if using a picture from the wallpaper gallery 136 */ 137 String mName = ""; 138 139 /** 140 * The component name of the currently set live wallpaper. 141 */ 142 ComponentName mWallpaperComponent; 143 144 /** 145 * The component name of the wallpaper that should be set next. 146 */ 147 ComponentName mNextWallpaperComponent; 148 149 /** 150 * Name of the component used to display bitmap wallpapers from either the gallery or 151 * built-in wallpapers. 152 */ 153 ComponentName mImageWallpaperComponent = new ComponentName("android", 154 ImageWallpaper.class.getName()); 155 156 WallpaperConnection mWallpaperConnection; 157 long mLastDiedTime; 158 boolean mWallpaperUpdating; 159 160 class WallpaperConnection extends IWallpaperConnection.Stub 161 implements ServiceConnection { 162 final WallpaperInfo mInfo; 163 final Binder mToken = new Binder(); 164 IWallpaperService mService; 165 IWallpaperEngine mEngine; 166 167 public WallpaperConnection(WallpaperInfo info) { 168 mInfo = info; 169 } 170 171 public void onServiceConnected(ComponentName name, IBinder service) { 172 synchronized (mLock) { 173 if (mWallpaperConnection == this) { 174 mLastDiedTime = SystemClock.uptimeMillis(); 175 mService = IWallpaperService.Stub.asInterface(service); 176 attachServiceLocked(this); 177 // XXX should probably do saveSettingsLocked() later 178 // when we have an engine, but I'm not sure about 179 // locking there and anyway we always need to be able to 180 // recover if there is something wrong. 181 saveSettingsLocked(); 182 } 183 } 184 } 185 186 public void onServiceDisconnected(ComponentName name) { 187 synchronized (mLock) { 188 mService = null; 189 mEngine = null; 190 if (mWallpaperConnection == this) { 191 Slog.w(TAG, "Wallpaper service gone: " + mWallpaperComponent); 192 if (!mWallpaperUpdating && (mLastDiedTime+MIN_WALLPAPER_CRASH_TIME) 193 > SystemClock.uptimeMillis()) { 194 Slog.w(TAG, "Reverting to built-in wallpaper!"); 195 bindWallpaperComponentLocked(null); 196 } 197 } 198 } 199 } 200 201 public void attachEngine(IWallpaperEngine engine) { 202 mEngine = engine; 203 } 204 205 public ParcelFileDescriptor setWallpaper(String name) { 206 synchronized (mLock) { 207 if (mWallpaperConnection == this) { 208 return updateWallpaperBitmapLocked(name); 209 } 210 return null; 211 } 212 } 213 } 214 215 class MyPackageMonitor extends PackageMonitor { 216 @Override 217 public void onPackageUpdateFinished(String packageName, int uid) { 218 synchronized (mLock) { 219 if (mWallpaperComponent != null && 220 mWallpaperComponent.getPackageName().equals(packageName)) { 221 mWallpaperUpdating = false; 222 ComponentName comp = mWallpaperComponent; 223 clearWallpaperComponentLocked(); 224 bindWallpaperComponentLocked(comp); 225 } 226 } 227 } 228 229 @Override 230 public void onPackageUpdateStarted(String packageName, int uid) { 231 synchronized (mLock) { 232 if (mWallpaperComponent != null && 233 mWallpaperComponent.getPackageName().equals(packageName)) { 234 mWallpaperUpdating = true; 235 } 236 } 237 } 238 239 @Override 240 public boolean onHandleForceStop(Intent intent, String[] packages, int uid, boolean doit) { 241 return doPackagesChanged(doit); 242 } 243 244 @Override 245 public void onSomePackagesChanged() { 246 doPackagesChanged(true); 247 } 248 249 boolean doPackagesChanged(boolean doit) { 250 boolean changed = false; 251 synchronized (mLock) { 252 if (mWallpaperComponent != null) { 253 int change = isPackageDisappearing(mWallpaperComponent.getPackageName()); 254 if (change == PACKAGE_PERMANENT_CHANGE 255 || change == PACKAGE_TEMPORARY_CHANGE) { 256 changed = true; 257 if (doit) { 258 Slog.w(TAG, "Wallpaper uninstalled, removing: " + mWallpaperComponent); 259 clearWallpaperLocked(); 260 } 261 } 262 } 263 if (mNextWallpaperComponent != null) { 264 int change = isPackageDisappearing(mNextWallpaperComponent.getPackageName()); 265 if (change == PACKAGE_PERMANENT_CHANGE 266 || change == PACKAGE_TEMPORARY_CHANGE) { 267 mNextWallpaperComponent = null; 268 } 269 } 270 if (mWallpaperComponent != null 271 && isPackageModified(mWallpaperComponent.getPackageName())) { 272 try { 273 mContext.getPackageManager().getServiceInfo( 274 mWallpaperComponent, 0); 275 } catch (NameNotFoundException e) { 276 Slog.w(TAG, "Wallpaper component gone, removing: " + mWallpaperComponent); 277 clearWallpaperLocked(); 278 } 279 } 280 if (mNextWallpaperComponent != null 281 && isPackageModified(mNextWallpaperComponent.getPackageName())) { 282 try { 283 mContext.getPackageManager().getServiceInfo( 284 mNextWallpaperComponent, 0); 285 } catch (NameNotFoundException e) { 286 mNextWallpaperComponent = null; 287 } 288 } 289 } 290 return changed; 291 } 292 } 293 294 public WallpaperManagerService(Context context) { 295 if (DEBUG) Slog.v(TAG, "WallpaperService startup"); 296 mContext = context; 297 mIWindowManager = IWindowManager.Stub.asInterface( 298 ServiceManager.getService(Context.WINDOW_SERVICE)); 299 mMonitor = new MyPackageMonitor(); 300 mMonitor.register(context, true); 301 WALLPAPER_DIR.mkdirs(); 302 loadSettingsLocked(); 303 mWallpaperObserver.startWatching(); 304 } 305 306 @Override 307 protected void finalize() throws Throwable { 308 super.finalize(); 309 mWallpaperObserver.stopWatching(); 310 } 311 312 public void systemReady() { 313 if (DEBUG) Slog.v(TAG, "systemReady"); 314 synchronized (mLock) { 315 try { 316 bindWallpaperComponentLocked(mNextWallpaperComponent); 317 } catch (RuntimeException e) { 318 Slog.w(TAG, "Failure starting previous wallpaper", e); 319 try { 320 bindWallpaperComponentLocked(null); 321 } catch (RuntimeException e2) { 322 Slog.w(TAG, "Failure starting default wallpaper", e2); 323 clearWallpaperComponentLocked(); 324 } 325 } 326 } 327 } 328 329 public void clearWallpaper() { 330 if (DEBUG) Slog.v(TAG, "clearWallpaper"); 331 synchronized (mLock) { 332 clearWallpaperLocked(); 333 } 334 } 335 336 public void clearWallpaperLocked() { 337 File f = WALLPAPER_FILE; 338 if (f.exists()) { 339 f.delete(); 340 } 341 final long ident = Binder.clearCallingIdentity(); 342 try { 343 bindWallpaperComponentLocked(null); 344 } catch (IllegalArgumentException e) { 345 // This can happen if the default wallpaper component doesn't 346 // exist. This should be a system configuration problem, but 347 // let's not let it crash the system and just live with no 348 // wallpaper. 349 Slog.e(TAG, "Default wallpaper component not found!", e); 350 } finally { 351 Binder.restoreCallingIdentity(ident); 352 } 353 } 354 355 public void setDimensionHints(int width, int height) throws RemoteException { 356 checkPermission(android.Manifest.permission.SET_WALLPAPER_HINTS); 357 358 if (width <= 0 || height <= 0) { 359 throw new IllegalArgumentException("width and height must be > 0"); 360 } 361 362 synchronized (mLock) { 363 if (width != mWidth || height != mHeight) { 364 mWidth = width; 365 mHeight = height; 366 saveSettingsLocked(); 367 if (mWallpaperConnection != null) { 368 if (mWallpaperConnection.mEngine != null) { 369 try { 370 mWallpaperConnection.mEngine.setDesiredSize( 371 width, height); 372 } catch (RemoteException e) { 373 } 374 notifyCallbacksLocked(); 375 } 376 } 377 } 378 } 379 } 380 381 public int getWidthHint() throws RemoteException { 382 synchronized (mLock) { 383 return mWidth; 384 } 385 } 386 387 public int getHeightHint() throws RemoteException { 388 synchronized (mLock) { 389 return mHeight; 390 } 391 } 392 393 public ParcelFileDescriptor getWallpaper(IWallpaperManagerCallback cb, 394 Bundle outParams) { 395 synchronized (mLock) { 396 try { 397 if (outParams != null) { 398 outParams.putInt("width", mWidth); 399 outParams.putInt("height", mHeight); 400 } 401 mCallbacks.register(cb); 402 File f = WALLPAPER_FILE; 403 if (!f.exists()) { 404 return null; 405 } 406 return ParcelFileDescriptor.open(f, MODE_READ_ONLY); 407 } catch (FileNotFoundException e) { 408 /* Shouldn't happen as we check to see if the file exists */ 409 Slog.w(TAG, "Error getting wallpaper", e); 410 } 411 return null; 412 } 413 } 414 415 public WallpaperInfo getWallpaperInfo() { 416 synchronized (mLock) { 417 if (mWallpaperConnection != null) { 418 return mWallpaperConnection.mInfo; 419 } 420 return null; 421 } 422 } 423 424 public ParcelFileDescriptor setWallpaper(String name) { 425 if (DEBUG) Slog.v(TAG, "setWallpaper"); 426 427 checkPermission(android.Manifest.permission.SET_WALLPAPER); 428 synchronized (mLock) { 429 final long ident = Binder.clearCallingIdentity(); 430 try { 431 ParcelFileDescriptor pfd = updateWallpaperBitmapLocked(name); 432 if (pfd != null) { 433 // Bind the wallpaper to an ImageWallpaper 434 bindWallpaperComponentLocked(mImageWallpaperComponent); 435 saveSettingsLocked(); 436 } 437 return pfd; 438 } finally { 439 Binder.restoreCallingIdentity(ident); 440 } 441 } 442 } 443 444 ParcelFileDescriptor updateWallpaperBitmapLocked(String name) { 445 if (name == null) name = ""; 446 try { 447 ParcelFileDescriptor fd = ParcelFileDescriptor.open(WALLPAPER_FILE, 448 MODE_CREATE|MODE_READ_WRITE); 449 mName = name; 450 return fd; 451 } catch (FileNotFoundException e) { 452 Slog.w(TAG, "Error setting wallpaper", e); 453 } 454 return null; 455 } 456 457 public void setWallpaperComponent(ComponentName name) { 458 if (DEBUG) Slog.v(TAG, "setWallpaperComponent name=" + name); 459 checkPermission(android.Manifest.permission.SET_WALLPAPER_COMPONENT); 460 synchronized (mLock) { 461 final long ident = Binder.clearCallingIdentity(); 462 try { 463 bindWallpaperComponentLocked(name); 464 } finally { 465 Binder.restoreCallingIdentity(ident); 466 } 467 } 468 } 469 470 void bindWallpaperComponentLocked(ComponentName componentName) { 471 if (DEBUG) Slog.v(TAG, "bindWallpaperComponentLocked: componentName=" + componentName); 472 473 // Has the component changed? 474 if (mWallpaperConnection != null) { 475 if (mWallpaperComponent == null) { 476 if (componentName == null) { 477 if (DEBUG) Slog.v(TAG, "bindWallpaperComponentLocked: still using default"); 478 // Still using default wallpaper. 479 return; 480 } 481 } else if (mWallpaperComponent.equals(componentName)) { 482 // Changing to same wallpaper. 483 if (DEBUG) Slog.v(TAG, "same wallpaper"); 484 return; 485 } 486 } 487 488 try { 489 if (componentName == null) { 490 String defaultComponent = 491 mContext.getString(com.android.internal.R.string.default_wallpaper_component); 492 if (defaultComponent != null) { 493 // See if there is a default wallpaper component specified 494 componentName = ComponentName.unflattenFromString(defaultComponent); 495 if (DEBUG) Slog.v(TAG, "Use default component wallpaper:" + componentName); 496 } 497 if (componentName == null) { 498 // Fall back to static image wallpaper 499 componentName = mImageWallpaperComponent; 500 //clearWallpaperComponentLocked(); 501 //return; 502 if (DEBUG) Slog.v(TAG, "Using image wallpaper"); 503 } 504 } 505 ServiceInfo si = mContext.getPackageManager().getServiceInfo(componentName, 506 PackageManager.GET_META_DATA | PackageManager.GET_PERMISSIONS); 507 if (!android.Manifest.permission.BIND_WALLPAPER.equals(si.permission)) { 508 throw new SecurityException("Selected service does not require " 509 + android.Manifest.permission.BIND_WALLPAPER 510 + ": " + componentName); 511 } 512 513 WallpaperInfo wi = null; 514 515 Intent intent = new Intent(WallpaperService.SERVICE_INTERFACE); 516 if (componentName != null && !componentName.equals(mImageWallpaperComponent)) { 517 // Make sure the selected service is actually a wallpaper service. 518 List<ResolveInfo> ris = mContext.getPackageManager() 519 .queryIntentServices(intent, PackageManager.GET_META_DATA); 520 for (int i=0; i<ris.size(); i++) { 521 ServiceInfo rsi = ris.get(i).serviceInfo; 522 if (rsi.name.equals(si.name) && 523 rsi.packageName.equals(si.packageName)) { 524 try { 525 wi = new WallpaperInfo(mContext, ris.get(i)); 526 } catch (XmlPullParserException e) { 527 throw new IllegalArgumentException(e); 528 } catch (IOException e) { 529 throw new IllegalArgumentException(e); 530 } 531 break; 532 } 533 } 534 if (wi == null) { 535 throw new SecurityException("Selected service is not a wallpaper: " 536 + componentName); 537 } 538 } 539 540 // Bind the service! 541 if (DEBUG) Slog.v(TAG, "Binding to:" + componentName); 542 WallpaperConnection newConn = new WallpaperConnection(wi); 543 intent.setComponent(componentName); 544 intent.putExtra(Intent.EXTRA_CLIENT_LABEL, 545 com.android.internal.R.string.wallpaper_binding_label); 546 intent.putExtra(Intent.EXTRA_CLIENT_INTENT, PendingIntent.getActivity( 547 mContext, 0, 548 Intent.createChooser(new Intent(Intent.ACTION_SET_WALLPAPER), 549 mContext.getText(com.android.internal.R.string.chooser_wallpaper)), 550 0)); 551 if (!mContext.bindService(intent, newConn, 552 Context.BIND_AUTO_CREATE)) { 553 throw new IllegalArgumentException("Unable to bind service: " 554 + componentName); 555 } 556 557 clearWallpaperComponentLocked(); 558 mWallpaperComponent = componentName; 559 mWallpaperConnection = newConn; 560 mLastDiedTime = SystemClock.uptimeMillis(); 561 try { 562 if (DEBUG) Slog.v(TAG, "Adding window token: " + newConn.mToken); 563 mIWindowManager.addWindowToken(newConn.mToken, 564 WindowManager.LayoutParams.TYPE_WALLPAPER); 565 } catch (RemoteException e) { 566 } 567 568 } catch (PackageManager.NameNotFoundException e) { 569 throw new IllegalArgumentException("Unknown component " + componentName); 570 } 571 } 572 573 void clearWallpaperComponentLocked() { 574 mWallpaperComponent = null; 575 if (mWallpaperConnection != null) { 576 if (mWallpaperConnection.mEngine != null) { 577 try { 578 mWallpaperConnection.mEngine.destroy(); 579 } catch (RemoteException e) { 580 } 581 } 582 mContext.unbindService(mWallpaperConnection); 583 try { 584 if (DEBUG) Slog.v(TAG, "Removing window token: " 585 + mWallpaperConnection.mToken); 586 mIWindowManager.removeWindowToken(mWallpaperConnection.mToken); 587 } catch (RemoteException e) { 588 } 589 mWallpaperConnection = null; 590 } 591 } 592 593 void attachServiceLocked(WallpaperConnection conn) { 594 try { 595 conn.mService.attach(conn, conn.mToken, 596 WindowManager.LayoutParams.TYPE_WALLPAPER, false, 597 mWidth, mHeight); 598 } catch (RemoteException e) { 599 Slog.w(TAG, "Failed attaching wallpaper; clearing", e); 600 if (!mWallpaperUpdating) { 601 bindWallpaperComponentLocked(null); 602 } 603 } 604 } 605 606 private void notifyCallbacksLocked() { 607 final int n = mCallbacks.beginBroadcast(); 608 for (int i = 0; i < n; i++) { 609 try { 610 mCallbacks.getBroadcastItem(i).onWallpaperChanged(); 611 } catch (RemoteException e) { 612 613 // The RemoteCallbackList will take care of removing 614 // the dead object for us. 615 } 616 } 617 mCallbacks.finishBroadcast(); 618 final Intent intent = new Intent(Intent.ACTION_WALLPAPER_CHANGED); 619 mContext.sendBroadcast(intent); 620 } 621 622 private void checkPermission(String permission) { 623 if (PackageManager.PERMISSION_GRANTED!= mContext.checkCallingOrSelfPermission(permission)) { 624 throw new SecurityException("Access denied to process: " + Binder.getCallingPid() 625 + ", must have permission " + permission); 626 } 627 } 628 629 private static JournaledFile makeJournaledFile() { 630 final String base = "/data/system/wallpaper_info.xml"; 631 return new JournaledFile(new File(base), new File(base + ".tmp")); 632 } 633 634 private void saveSettingsLocked() { 635 JournaledFile journal = makeJournaledFile(); 636 FileOutputStream stream = null; 637 try { 638 stream = new FileOutputStream(journal.chooseForWrite(), false); 639 XmlSerializer out = new FastXmlSerializer(); 640 out.setOutput(stream, "utf-8"); 641 out.startDocument(null, true); 642 643 out.startTag(null, "wp"); 644 out.attribute(null, "width", Integer.toString(mWidth)); 645 out.attribute(null, "height", Integer.toString(mHeight)); 646 out.attribute(null, "name", mName); 647 if (mWallpaperComponent != null) { 648 out.attribute(null, "component", 649 mWallpaperComponent.flattenToShortString()); 650 } 651 out.endTag(null, "wp"); 652 653 out.endDocument(); 654 stream.close(); 655 journal.commit(); 656 } catch (IOException e) { 657 try { 658 if (stream != null) { 659 stream.close(); 660 } 661 } catch (IOException ex) { 662 // Ignore 663 } 664 journal.rollback(); 665 } 666 } 667 668 private void loadSettingsLocked() { 669 if (DEBUG) Slog.v(TAG, "loadSettingsLocked"); 670 671 JournaledFile journal = makeJournaledFile(); 672 FileInputStream stream = null; 673 File file = journal.chooseForRead(); 674 boolean success = false; 675 try { 676 stream = new FileInputStream(file); 677 XmlPullParser parser = Xml.newPullParser(); 678 parser.setInput(stream, null); 679 680 int type; 681 do { 682 type = parser.next(); 683 if (type == XmlPullParser.START_TAG) { 684 String tag = parser.getName(); 685 if ("wp".equals(tag)) { 686 mWidth = Integer.parseInt(parser.getAttributeValue(null, "width")); 687 mHeight = Integer.parseInt(parser.getAttributeValue(null, "height")); 688 mName = parser.getAttributeValue(null, "name"); 689 String comp = parser.getAttributeValue(null, "component"); 690 mNextWallpaperComponent = comp != null 691 ? ComponentName.unflattenFromString(comp) 692 : null; 693 694 if (DEBUG) { 695 Slog.v(TAG, "mWidth:" + mWidth); 696 Slog.v(TAG, "mHeight:" + mHeight); 697 Slog.v(TAG, "mName:" + mName); 698 Slog.v(TAG, "mNextWallpaperComponent:" + mNextWallpaperComponent); 699 } 700 } 701 } 702 } while (type != XmlPullParser.END_DOCUMENT); 703 success = true; 704 } catch (NullPointerException e) { 705 Slog.w(TAG, "failed parsing " + file + " " + e); 706 } catch (NumberFormatException e) { 707 Slog.w(TAG, "failed parsing " + file + " " + e); 708 } catch (XmlPullParserException e) { 709 Slog.w(TAG, "failed parsing " + file + " " + e); 710 } catch (IOException e) { 711 Slog.w(TAG, "failed parsing " + file + " " + e); 712 } catch (IndexOutOfBoundsException e) { 713 Slog.w(TAG, "failed parsing " + file + " " + e); 714 } 715 try { 716 if (stream != null) { 717 stream.close(); 718 } 719 } catch (IOException e) { 720 // Ignore 721 } 722 723 if (!success) { 724 mWidth = -1; 725 mHeight = -1; 726 mName = ""; 727 } 728 } 729 730 void settingsRestored() { 731 if (DEBUG) Slog.v(TAG, "settingsRestored"); 732 733 boolean success = false; 734 synchronized (mLock) { 735 loadSettingsLocked(); 736 if (mNextWallpaperComponent != null && 737 !mNextWallpaperComponent.equals(mImageWallpaperComponent)) { 738 try { 739 bindWallpaperComponentLocked(mNextWallpaperComponent); 740 } catch (IllegalArgumentException e) { 741 // No such live wallpaper or other failure; fall back to the default 742 // live wallpaper (since the profile being restored indicated that the 743 // user had selected a live rather than static one). 744 bindWallpaperComponentLocked(null); 745 } 746 success = true; 747 } else { 748 // If there's a wallpaper name, we use that. If that can't be loaded, then we 749 // use the default. 750 if ("".equals(mName)) { 751 if (DEBUG) Slog.v(TAG, "settingsRestored: name is empty"); 752 success = true; 753 } else { 754 if (DEBUG) Slog.v(TAG, "settingsRestored: attempting to restore named resource"); 755 success = restoreNamedResourceLocked(); 756 } 757 if (DEBUG) Slog.v(TAG, "settingsRestored: success=" + success); 758 if (success) { 759 bindWallpaperComponentLocked(mImageWallpaperComponent); 760 } 761 } 762 } 763 764 if (!success) { 765 Slog.e(TAG, "Failed to restore wallpaper: '" + mName + "'"); 766 mName = ""; 767 WALLPAPER_FILE.delete(); 768 } 769 saveSettingsLocked(); 770 } 771 772 boolean restoreNamedResourceLocked() { 773 if (mName.length() > 4 && "res:".equals(mName.substring(0, 4))) { 774 String resName = mName.substring(4); 775 776 String pkg = null; 777 int colon = resName.indexOf(':'); 778 if (colon > 0) { 779 pkg = resName.substring(0, colon); 780 } 781 782 String ident = null; 783 int slash = resName.lastIndexOf('/'); 784 if (slash > 0) { 785 ident = resName.substring(slash+1); 786 } 787 788 String type = null; 789 if (colon > 0 && slash > 0 && (slash-colon) > 1) { 790 type = resName.substring(colon+1, slash); 791 } 792 793 if (pkg != null && ident != null && type != null) { 794 int resId = -1; 795 InputStream res = null; 796 FileOutputStream fos = null; 797 try { 798 Context c = mContext.createPackageContext(pkg, Context.CONTEXT_RESTRICTED); 799 Resources r = c.getResources(); 800 resId = r.getIdentifier(resName, null, null); 801 if (resId == 0) { 802 Slog.e(TAG, "couldn't resolve identifier pkg=" + pkg + " type=" + type 803 + " ident=" + ident); 804 return false; 805 } 806 807 res = r.openRawResource(resId); 808 if (WALLPAPER_FILE.exists()) { 809 WALLPAPER_FILE.delete(); 810 } 811 fos = new FileOutputStream(WALLPAPER_FILE); 812 813 byte[] buffer = new byte[32768]; 814 int amt; 815 while ((amt=res.read(buffer)) > 0) { 816 fos.write(buffer, 0, amt); 817 } 818 // mWallpaperObserver will notice the close and send the change broadcast 819 820 Slog.v(TAG, "Restored wallpaper: " + resName); 821 return true; 822 } catch (NameNotFoundException e) { 823 Slog.e(TAG, "Package name " + pkg + " not found"); 824 } catch (Resources.NotFoundException e) { 825 Slog.e(TAG, "Resource not found: " + resId); 826 } catch (IOException e) { 827 Slog.e(TAG, "IOException while restoring wallpaper ", e); 828 } finally { 829 if (res != null) { 830 try { 831 res.close(); 832 } catch (IOException ex) {} 833 } 834 if (fos != null) { 835 try { 836 fos.close(); 837 } catch (IOException ex) {} 838 } 839 } 840 } 841 } 842 return false; 843 } 844 845 @Override 846 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 847 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 848 != PackageManager.PERMISSION_GRANTED) { 849 850 pw.println("Permission Denial: can't dump wallpaper service from from pid=" 851 + Binder.getCallingPid() 852 + ", uid=" + Binder.getCallingUid()); 853 return; 854 } 855 856 synchronized (mLock) { 857 pw.println("Current Wallpaper Service state:"); 858 pw.print(" mWidth="); pw.print(mWidth); 859 pw.print(" mHeight="); pw.println(mHeight); 860 pw.print(" mName="); pw.println(mName); 861 pw.print(" mWallpaperComponent="); pw.println(mWallpaperComponent); 862 if (mWallpaperConnection != null) { 863 WallpaperConnection conn = mWallpaperConnection; 864 pw.print(" Wallpaper connection "); 865 pw.print(conn); pw.println(":"); 866 pw.print(" mInfo.component="); pw.println(conn.mInfo.getComponent()); 867 pw.print(" mToken="); pw.println(conn.mToken); 868 pw.print(" mService="); pw.println(conn.mService); 869 pw.print(" mEngine="); pw.println(conn.mEngine); 870 pw.print(" mLastDiedTime="); 871 pw.println(mLastDiedTime - SystemClock.uptimeMillis()); 872 } 873 } 874 } 875 } 876
