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.wallpaper; 18 19 import static android.app.WallpaperManager.FLAG_LOCK; 20 import static android.app.WallpaperManager.FLAG_SYSTEM; 21 import static android.os.ParcelFileDescriptor.MODE_CREATE; 22 import static android.os.ParcelFileDescriptor.MODE_READ_ONLY; 23 import static android.os.ParcelFileDescriptor.MODE_READ_WRITE; 24 import static android.os.ParcelFileDescriptor.MODE_TRUNCATE; 25 26 import android.app.ActivityManager; 27 import android.app.ActivityManagerNative; 28 import android.app.AppGlobals; 29 import android.app.AppOpsManager; 30 import android.app.IUserSwitchObserver; 31 import android.app.IWallpaperManager; 32 import android.app.IWallpaperManagerCallback; 33 import android.app.PendingIntent; 34 import android.app.WallpaperInfo; 35 import android.app.WallpaperManager; 36 import android.app.admin.DevicePolicyManager; 37 import android.app.backup.WallpaperBackupHelper; 38 import android.content.BroadcastReceiver; 39 import android.content.ComponentName; 40 import android.content.Context; 41 import android.content.Intent; 42 import android.content.IntentFilter; 43 import android.content.ServiceConnection; 44 import android.content.pm.IPackageManager; 45 import android.content.pm.PackageManager; 46 import android.content.pm.PackageManager.NameNotFoundException; 47 import android.content.pm.ResolveInfo; 48 import android.content.pm.ServiceInfo; 49 import android.content.pm.UserInfo; 50 import android.content.res.Resources; 51 import android.graphics.Bitmap; 52 import android.graphics.BitmapFactory; 53 import android.graphics.BitmapRegionDecoder; 54 import android.graphics.Point; 55 import android.graphics.Rect; 56 import android.os.Binder; 57 import android.os.Bundle; 58 import android.os.Environment; 59 import android.os.FileObserver; 60 import android.os.FileUtils; 61 import android.os.IBinder; 62 import android.os.IRemoteCallback; 63 import android.os.Process; 64 import android.os.ParcelFileDescriptor; 65 import android.os.RemoteCallbackList; 66 import android.os.RemoteException; 67 import android.os.SELinux; 68 import android.os.ServiceManager; 69 import android.os.SystemClock; 70 import android.os.UserHandle; 71 import android.os.UserManager; 72 import android.service.wallpaper.IWallpaperConnection; 73 import android.service.wallpaper.IWallpaperEngine; 74 import android.service.wallpaper.IWallpaperService; 75 import android.service.wallpaper.WallpaperService; 76 import android.system.ErrnoException; 77 import android.system.Os; 78 import android.util.EventLog; 79 import android.util.Slog; 80 import android.util.SparseArray; 81 import android.util.Xml; 82 import android.view.Display; 83 import android.view.IWindowManager; 84 import android.view.WindowManager; 85 86 import com.android.internal.R; 87 import com.android.internal.content.PackageMonitor; 88 import com.android.internal.util.FastXmlSerializer; 89 import com.android.internal.util.JournaledFile; 90 import com.android.server.EventLogTags; 91 import com.android.server.SystemService; 92 93 import libcore.io.IoUtils; 94 95 import org.xmlpull.v1.XmlPullParser; 96 import org.xmlpull.v1.XmlPullParserException; 97 import org.xmlpull.v1.XmlSerializer; 98 99 import java.io.BufferedOutputStream; 100 import java.io.File; 101 import java.io.FileDescriptor; 102 import java.io.FileInputStream; 103 import java.io.FileNotFoundException; 104 import java.io.FileOutputStream; 105 import java.io.IOException; 106 import java.io.InputStream; 107 import java.io.PrintWriter; 108 import java.nio.charset.StandardCharsets; 109 import java.util.Arrays; 110 import java.util.List; 111 112 public class WallpaperManagerService extends IWallpaperManager.Stub { 113 static final String TAG = "WallpaperManagerService"; 114 static final boolean DEBUG = false; 115 116 public static class Lifecycle extends SystemService { 117 private WallpaperManagerService mService; 118 119 public Lifecycle(Context context) { 120 super(context); 121 } 122 123 @Override 124 public void onStart() { 125 mService = new WallpaperManagerService(getContext()); 126 publishBinderService(Context.WALLPAPER_SERVICE, mService); 127 } 128 129 @Override 130 public void onBootPhase(int phase) { 131 if (phase == SystemService.PHASE_ACTIVITY_MANAGER_READY) { 132 mService.systemReady(); 133 } else if (phase == SystemService.PHASE_THIRD_PARTY_APPS_CAN_START) { 134 mService.switchUser(UserHandle.USER_SYSTEM, null); 135 } 136 } 137 138 @Override 139 public void onUnlockUser(int userHandle) { 140 mService.onUnlockUser(userHandle); 141 } 142 } 143 144 final Object mLock = new Object(); 145 146 /** 147 * Minimum time between crashes of a wallpaper service for us to consider 148 * restarting it vs. just reverting to the static wallpaper. 149 */ 150 static final long MIN_WALLPAPER_CRASH_TIME = 10000; 151 static final int MAX_WALLPAPER_COMPONENT_LOG_LENGTH = 128; 152 static final String WALLPAPER = "wallpaper_orig"; 153 static final String WALLPAPER_CROP = "wallpaper"; 154 static final String WALLPAPER_LOCK_ORIG = "wallpaper_lock_orig"; 155 static final String WALLPAPER_LOCK_CROP = "wallpaper_lock"; 156 static final String WALLPAPER_INFO = "wallpaper_info.xml"; 157 158 // All the various per-user state files we need to be aware of 159 static final String[] sPerUserFiles = new String[] { 160 WALLPAPER, WALLPAPER_CROP, 161 WALLPAPER_LOCK_ORIG, WALLPAPER_LOCK_CROP, 162 WALLPAPER_INFO 163 }; 164 165 /** 166 * Observes the wallpaper for changes and notifies all IWallpaperServiceCallbacks 167 * that the wallpaper has changed. The CREATE is triggered when there is no 168 * wallpaper set and is created for the first time. The CLOSE_WRITE is triggered 169 * everytime the wallpaper is changed. 170 */ 171 private class WallpaperObserver extends FileObserver { 172 173 final int mUserId; 174 final WallpaperData mWallpaper; 175 final File mWallpaperDir; 176 final File mWallpaperFile; 177 final File mWallpaperLockFile; 178 final File mWallpaperInfoFile; 179 180 public WallpaperObserver(WallpaperData wallpaper) { 181 super(getWallpaperDir(wallpaper.userId).getAbsolutePath(), 182 CLOSE_WRITE | MOVED_TO | DELETE | DELETE_SELF); 183 mUserId = wallpaper.userId; 184 mWallpaperDir = getWallpaperDir(wallpaper.userId); 185 mWallpaper = wallpaper; 186 mWallpaperFile = new File(mWallpaperDir, WALLPAPER); 187 mWallpaperLockFile = new File(mWallpaperDir, WALLPAPER_LOCK_ORIG); 188 mWallpaperInfoFile = new File(mWallpaperDir, WALLPAPER_INFO); 189 } 190 191 private WallpaperData dataForEvent(boolean sysChanged, boolean lockChanged) { 192 WallpaperData wallpaper = null; 193 synchronized (mLock) { 194 if (lockChanged) { 195 wallpaper = mLockWallpaperMap.get(mUserId); 196 } 197 if (wallpaper == null) { 198 // no lock-specific wallpaper exists, or sys case, handled together 199 wallpaper = mWallpaperMap.get(mUserId); 200 } 201 } 202 return (wallpaper != null) ? wallpaper : mWallpaper; 203 } 204 205 @Override 206 public void onEvent(int event, String path) { 207 if (path == null) { 208 return; 209 } 210 final boolean moved = (event == MOVED_TO); 211 final boolean written = (event == CLOSE_WRITE || moved); 212 final File changedFile = new File(mWallpaperDir, path); 213 214 // System and system+lock changes happen on the system wallpaper input file; 215 // lock-only changes happen on the dedicated lock wallpaper input file 216 final boolean sysWallpaperChanged = (mWallpaperFile.equals(changedFile)); 217 final boolean lockWallpaperChanged = (mWallpaperLockFile.equals(changedFile)); 218 WallpaperData wallpaper = dataForEvent(sysWallpaperChanged, lockWallpaperChanged); 219 220 if (DEBUG) { 221 Slog.v(TAG, "Wallpaper file change: evt=" + event 222 + " path=" + path 223 + " sys=" + sysWallpaperChanged 224 + " lock=" + lockWallpaperChanged 225 + " imagePending=" + wallpaper.imageWallpaperPending 226 + " whichPending=0x" + Integer.toHexString(wallpaper.whichPending) 227 + " written=" + written); 228 } 229 230 if (moved && lockWallpaperChanged) { 231 // We just migrated sys -> lock to preserve imagery for an impending 232 // new system-only wallpaper. Tell keyguard about it and make sure it 233 // has the right SELinux label. 234 if (DEBUG) { 235 Slog.i(TAG, "Sys -> lock MOVED_TO"); 236 } 237 SELinux.restorecon(changedFile); 238 notifyLockWallpaperChanged(); 239 return; 240 } 241 242 synchronized (mLock) { 243 if (sysWallpaperChanged || lockWallpaperChanged) { 244 notifyCallbacksLocked(wallpaper); 245 if (wallpaper.wallpaperComponent == null 246 || event != CLOSE_WRITE // includes the MOVED_TO case 247 || wallpaper.imageWallpaperPending) { 248 if (written) { 249 // The image source has finished writing the source image, 250 // so we now produce the crop rect (in the background), and 251 // only publish the new displayable (sub)image as a result 252 // of that work. 253 if (DEBUG) { 254 Slog.v(TAG, "Wallpaper written; generating crop"); 255 } 256 if (moved) { 257 // This is a restore, so generate the crop using any just-restored new 258 // crop guidelines, making sure to preserve our local dimension hints. 259 // We also make sure to reapply the correct SELinux label. 260 if (DEBUG) { 261 Slog.v(TAG, "moved-to, therefore restore; reloading metadata"); 262 } 263 SELinux.restorecon(changedFile); 264 loadSettingsLocked(wallpaper.userId, true); 265 } 266 generateCrop(wallpaper); 267 if (DEBUG) { 268 Slog.v(TAG, "Crop done; invoking completion callback"); 269 } 270 wallpaper.imageWallpaperPending = false; 271 if (wallpaper.setComplete != null) { 272 try { 273 wallpaper.setComplete.onWallpaperChanged(); 274 } catch (RemoteException e) { 275 // if this fails we don't really care; the setting app may just 276 // have crashed and that sort of thing is a fact of life. 277 } 278 } 279 if (sysWallpaperChanged) { 280 // If this was the system wallpaper, rebind... 281 bindWallpaperComponentLocked(mImageWallpaper, true, 282 false, wallpaper, null); 283 } 284 if (lockWallpaperChanged 285 || (wallpaper.whichPending & FLAG_LOCK) != 0) { 286 if (DEBUG) { 287 Slog.i(TAG, "Lock-relevant wallpaper changed"); 288 } 289 // either a lock-only wallpaper commit or a system+lock event. 290 // if it's system-plus-lock we need to wipe the lock bookkeeping; 291 // we're falling back to displaying the system wallpaper there. 292 if (!lockWallpaperChanged) { 293 mLockWallpaperMap.remove(wallpaper.userId); 294 } 295 // and in any case, tell keyguard about it 296 notifyLockWallpaperChanged(); 297 } 298 saveSettingsLocked(wallpaper.userId); 299 } 300 } 301 } 302 } 303 } 304 } 305 306 void notifyLockWallpaperChanged() { 307 final IWallpaperManagerCallback cb = mKeyguardListener; 308 if (cb != null) { 309 try { 310 cb.onWallpaperChanged(); 311 } catch (RemoteException e) { 312 // Oh well it went away; no big deal 313 } 314 } 315 } 316 317 /** 318 * Once a new wallpaper has been written via setWallpaper(...), it needs to be cropped 319 * for display. 320 */ 321 private void generateCrop(WallpaperData wallpaper) { 322 boolean success = false; 323 324 Rect cropHint = new Rect(wallpaper.cropHint); 325 326 if (DEBUG) { 327 Slog.v(TAG, "Generating crop for new wallpaper(s): 0x" 328 + Integer.toHexString(wallpaper.whichPending) 329 + " to " + wallpaper.cropFile.getName() 330 + " crop=(" + cropHint.width() + 'x' + cropHint.height() 331 + ") dim=(" + wallpaper.width + 'x' + wallpaper.height + ')'); 332 } 333 334 // Analyse the source; needed in multiple cases 335 BitmapFactory.Options options = new BitmapFactory.Options(); 336 options.inJustDecodeBounds = true; 337 BitmapFactory.decodeFile(wallpaper.wallpaperFile.getAbsolutePath(), options); 338 if (options.outWidth <= 0 || options.outHeight <= 0) { 339 Slog.e(TAG, "Invalid wallpaper data"); 340 success = false; 341 } else { 342 boolean needCrop = false; 343 boolean needScale = false; 344 345 // Empty crop means use the full image 346 if (cropHint.isEmpty()) { 347 cropHint.left = cropHint.top = 0; 348 cropHint.right = options.outWidth; 349 cropHint.bottom = options.outHeight; 350 } else { 351 // force the crop rect to lie within the measured bounds 352 cropHint.offset( 353 (cropHint.right > options.outWidth ? options.outWidth - cropHint.right : 0), 354 (cropHint.bottom > options.outHeight ? options.outHeight - cropHint.bottom : 0)); 355 356 // Don't bother cropping if what we're left with is identity 357 needCrop = (options.outHeight >= cropHint.height() 358 && options.outWidth >= cropHint.width()); 359 } 360 361 // scale if the crop height winds up not matching the recommended metrics 362 needScale = (wallpaper.height != cropHint.height()); 363 364 if (DEBUG) { 365 Slog.v(TAG, "crop: w=" + cropHint.width() + " h=" + cropHint.height()); 366 Slog.v(TAG, "dims: w=" + wallpaper.width + " h=" + wallpaper.height); 367 Slog.v(TAG, "meas: w=" + options.outWidth + " h=" + options.outHeight); 368 Slog.v(TAG, "crop?=" + needCrop + " scale?=" + needScale); 369 } 370 371 if (!needCrop && !needScale) { 372 // Simple case: the nominal crop fits what we want, so we take 373 // the whole thing and just copy the image file directly. 374 if (DEBUG) { 375 Slog.v(TAG, "Null crop of new wallpaper; copying"); 376 } 377 success = FileUtils.copyFile(wallpaper.wallpaperFile, wallpaper.cropFile); 378 if (!success) { 379 wallpaper.cropFile.delete(); 380 // TODO: fall back to default wallpaper in this case 381 } 382 } else { 383 // Fancy case: crop and scale. First, we decode and scale down if appropriate. 384 FileOutputStream f = null; 385 BufferedOutputStream bos = null; 386 try { 387 BitmapRegionDecoder decoder = BitmapRegionDecoder.newInstance( 388 wallpaper.wallpaperFile.getAbsolutePath(), false); 389 390 // This actually downsamples only by powers of two, but that's okay; we do 391 // a proper scaling blit later. This is to minimize transient RAM use. 392 // We calculate the largest power-of-two under the actual ratio rather than 393 // just let the decode take care of it because we also want to remap where the 394 // cropHint rectangle lies in the decoded [super]rect. 395 final BitmapFactory.Options scaler; 396 final int actualScale = cropHint.height() / wallpaper.height; 397 int scale = 1; 398 while (2*scale < actualScale) { 399 scale *= 2; 400 } 401 if (scale > 1) { 402 scaler = new BitmapFactory.Options(); 403 scaler.inSampleSize = scale; 404 if (DEBUG) { 405 Slog.v(TAG, "Downsampling cropped rect with scale " + scale); 406 } 407 } else { 408 scaler = null; 409 } 410 Bitmap cropped = decoder.decodeRegion(cropHint, scaler); 411 decoder.recycle(); 412 413 if (cropped == null) { 414 Slog.e(TAG, "Could not decode new wallpaper"); 415 } else { 416 // We've got the extracted crop; now we want to scale it properly to 417 // the desired rectangle. That's a height-biased operation: make it 418 // fit the hinted height, and accept whatever width we end up with. 419 cropHint.offsetTo(0, 0); 420 cropHint.right /= scale; // adjust by downsampling factor 421 cropHint.bottom /= scale; 422 final float heightR = ((float)wallpaper.height) / ((float)cropHint.height()); 423 if (DEBUG) { 424 Slog.v(TAG, "scale " + heightR + ", extracting " + cropHint); 425 } 426 final int destWidth = (int)(cropHint.width() * heightR); 427 final Bitmap finalCrop = Bitmap.createScaledBitmap(cropped, 428 destWidth, wallpaper.height, true); 429 if (DEBUG) { 430 Slog.v(TAG, "Final extract:"); 431 Slog.v(TAG, " dims: w=" + wallpaper.width 432 + " h=" + wallpaper.height); 433 Slog.v(TAG, " out: w=" + finalCrop.getWidth() 434 + " h=" + finalCrop.getHeight()); 435 } 436 437 f = new FileOutputStream(wallpaper.cropFile); 438 bos = new BufferedOutputStream(f, 32*1024); 439 finalCrop.compress(Bitmap.CompressFormat.JPEG, 100, bos); 440 bos.flush(); // don't rely on the implicit flush-at-close when noting success 441 success = true; 442 } 443 } catch (Exception e) { 444 if (DEBUG) { 445 Slog.e(TAG, "Error decoding crop", e); 446 } 447 } finally { 448 IoUtils.closeQuietly(bos); 449 IoUtils.closeQuietly(f); 450 } 451 } 452 } 453 454 if (!success) { 455 Slog.e(TAG, "Unable to apply new wallpaper"); 456 wallpaper.cropFile.delete(); 457 } 458 459 if (wallpaper.cropFile.exists()) { 460 boolean didRestorecon = SELinux.restorecon(wallpaper.cropFile.getAbsoluteFile()); 461 if (DEBUG) { 462 Slog.v(TAG, "restorecon() of crop file returned " + didRestorecon); 463 } 464 } 465 } 466 467 final Context mContext; 468 final IWindowManager mIWindowManager; 469 final IPackageManager mIPackageManager; 470 final MyPackageMonitor mMonitor; 471 final AppOpsManager mAppOpsManager; 472 WallpaperData mLastWallpaper; 473 IWallpaperManagerCallback mKeyguardListener; 474 boolean mWaitingForUnlock; 475 476 /** 477 * ID of the current wallpaper, changed every time anything sets a wallpaper. 478 * This is used for external detection of wallpaper update activity. 479 */ 480 int mWallpaperId; 481 482 /** 483 * Name of the component used to display bitmap wallpapers from either the gallery or 484 * built-in wallpapers. 485 */ 486 final ComponentName mImageWallpaper; 487 488 final SparseArray<WallpaperData> mWallpaperMap = new SparseArray<WallpaperData>(); 489 final SparseArray<WallpaperData> mLockWallpaperMap = new SparseArray<WallpaperData>(); 490 491 int mCurrentUserId; 492 493 static class WallpaperData { 494 495 int userId; 496 497 final File wallpaperFile; // source image 498 final File cropFile; // eventual destination 499 500 /** 501 * True while the client is writing a new wallpaper 502 */ 503 boolean imageWallpaperPending; 504 505 /** 506 * Which new wallpapers are being written; mirrors the 'which' 507 * selector bit field to setWallpaper(). 508 */ 509 int whichPending; 510 511 /** 512 * Callback once the set + crop is finished 513 */ 514 IWallpaperManagerCallback setComplete; 515 516 /** 517 * Is the OS allowed to back up this wallpaper imagery? 518 */ 519 boolean allowBackup; 520 521 /** 522 * Resource name if using a picture from the wallpaper gallery 523 */ 524 String name = ""; 525 526 /** 527 * The component name of the currently set live wallpaper. 528 */ 529 ComponentName wallpaperComponent; 530 531 /** 532 * The component name of the wallpaper that should be set next. 533 */ 534 ComponentName nextWallpaperComponent; 535 536 /** 537 * The ID of this wallpaper 538 */ 539 int wallpaperId; 540 541 WallpaperConnection connection; 542 long lastDiedTime; 543 boolean wallpaperUpdating; 544 WallpaperObserver wallpaperObserver; 545 546 /** 547 * List of callbacks registered they should each be notified when the wallpaper is changed. 548 */ 549 private RemoteCallbackList<IWallpaperManagerCallback> callbacks 550 = new RemoteCallbackList<IWallpaperManagerCallback>(); 551 552 int width = -1; 553 int height = -1; 554 555 /** 556 * The crop hint supplied for displaying a subset of the source image 557 */ 558 final Rect cropHint = new Rect(0, 0, 0, 0); 559 560 final Rect padding = new Rect(0, 0, 0, 0); 561 562 WallpaperData(int userId, String inputFileName, String cropFileName) { 563 this.userId = userId; 564 final File wallpaperDir = getWallpaperDir(userId); 565 wallpaperFile = new File(wallpaperDir, inputFileName); 566 cropFile = new File(wallpaperDir, cropFileName); 567 } 568 569 // Called during initialization of a given user's wallpaper bookkeeping 570 boolean cropExists() { 571 return cropFile.exists(); 572 } 573 } 574 575 int makeWallpaperIdLocked() { 576 do { 577 ++mWallpaperId; 578 } while (mWallpaperId == 0); 579 return mWallpaperId; 580 } 581 582 class WallpaperConnection extends IWallpaperConnection.Stub 583 implements ServiceConnection { 584 final WallpaperInfo mInfo; 585 final Binder mToken = new Binder(); 586 IWallpaperService mService; 587 IWallpaperEngine mEngine; 588 WallpaperData mWallpaper; 589 IRemoteCallback mReply; 590 591 boolean mDimensionsChanged = false; 592 boolean mPaddingChanged = false; 593 594 public WallpaperConnection(WallpaperInfo info, WallpaperData wallpaper) { 595 mInfo = info; 596 mWallpaper = wallpaper; 597 } 598 599 @Override 600 public void onServiceConnected(ComponentName name, IBinder service) { 601 synchronized (mLock) { 602 if (mWallpaper.connection == this) { 603 mService = IWallpaperService.Stub.asInterface(service); 604 attachServiceLocked(this, mWallpaper); 605 // XXX should probably do saveSettingsLocked() later 606 // when we have an engine, but I'm not sure about 607 // locking there and anyway we always need to be able to 608 // recover if there is something wrong. 609 saveSettingsLocked(mWallpaper.userId); 610 } 611 } 612 } 613 614 @Override 615 public void onServiceDisconnected(ComponentName name) { 616 synchronized (mLock) { 617 mService = null; 618 mEngine = null; 619 if (mWallpaper.connection == this) { 620 Slog.w(TAG, "Wallpaper service gone: " + mWallpaper.wallpaperComponent); 621 if (!mWallpaper.wallpaperUpdating 622 && mWallpaper.userId == mCurrentUserId) { 623 // There is a race condition which causes 624 // {@link #mWallpaper.wallpaperUpdating} to be false even if it is 625 // currently updating since the broadcast notifying us is async. 626 // This race is overcome by the general rule that we only reset the 627 // wallpaper if its service was shut down twice 628 // during {@link #MIN_WALLPAPER_CRASH_TIME} millis. 629 if (mWallpaper.lastDiedTime != 0 630 && mWallpaper.lastDiedTime + MIN_WALLPAPER_CRASH_TIME 631 > SystemClock.uptimeMillis()) { 632 Slog.w(TAG, "Reverting to built-in wallpaper!"); 633 clearWallpaperLocked(true, FLAG_SYSTEM, mWallpaper.userId, null); 634 } else { 635 mWallpaper.lastDiedTime = SystemClock.uptimeMillis(); 636 } 637 final String flattened = name.flattenToString(); 638 EventLog.writeEvent(EventLogTags.WP_WALLPAPER_CRASHED, 639 flattened.substring(0, Math.min(flattened.length(), 640 MAX_WALLPAPER_COMPONENT_LOG_LENGTH))); 641 } 642 } 643 } 644 } 645 646 @Override 647 public void attachEngine(IWallpaperEngine engine) { 648 synchronized (mLock) { 649 mEngine = engine; 650 if (mDimensionsChanged) { 651 try { 652 mEngine.setDesiredSize(mWallpaper.width, mWallpaper.height); 653 } catch (RemoteException e) { 654 Slog.w(TAG, "Failed to set wallpaper dimensions", e); 655 } 656 mDimensionsChanged = false; 657 } 658 if (mPaddingChanged) { 659 try { 660 mEngine.setDisplayPadding(mWallpaper.padding); 661 } catch (RemoteException e) { 662 Slog.w(TAG, "Failed to set wallpaper padding", e); 663 } 664 mPaddingChanged = false; 665 } 666 } 667 } 668 669 @Override 670 public void engineShown(IWallpaperEngine engine) { 671 synchronized (mLock) { 672 if (mReply != null) { 673 long ident = Binder.clearCallingIdentity(); 674 try { 675 mReply.sendResult(null); 676 } catch (RemoteException e) { 677 Binder.restoreCallingIdentity(ident); 678 } 679 mReply = null; 680 } 681 } 682 } 683 684 @Override 685 public ParcelFileDescriptor setWallpaper(String name) { 686 synchronized (mLock) { 687 if (mWallpaper.connection == this) { 688 return updateWallpaperBitmapLocked(name, mWallpaper, null); 689 } 690 return null; 691 } 692 } 693 } 694 695 class MyPackageMonitor extends PackageMonitor { 696 @Override 697 public void onPackageUpdateFinished(String packageName, int uid) { 698 synchronized (mLock) { 699 if (mCurrentUserId != getChangingUserId()) { 700 return; 701 } 702 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 703 if (wallpaper != null) { 704 if (wallpaper.wallpaperComponent != null 705 && wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 706 wallpaper.wallpaperUpdating = false; 707 ComponentName comp = wallpaper.wallpaperComponent; 708 clearWallpaperComponentLocked(wallpaper); 709 if (!bindWallpaperComponentLocked(comp, false, false, 710 wallpaper, null)) { 711 Slog.w(TAG, "Wallpaper no longer available; reverting to default"); 712 clearWallpaperLocked(false, FLAG_SYSTEM, wallpaper.userId, null); 713 } 714 } 715 } 716 } 717 } 718 719 @Override 720 public void onPackageModified(String packageName) { 721 synchronized (mLock) { 722 if (mCurrentUserId != getChangingUserId()) { 723 return; 724 } 725 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 726 if (wallpaper != null) { 727 if (wallpaper.wallpaperComponent == null 728 || !wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 729 return; 730 } 731 doPackagesChangedLocked(true, wallpaper); 732 } 733 } 734 } 735 736 @Override 737 public void onPackageUpdateStarted(String packageName, int uid) { 738 synchronized (mLock) { 739 if (mCurrentUserId != getChangingUserId()) { 740 return; 741 } 742 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 743 if (wallpaper != null) { 744 if (wallpaper.wallpaperComponent != null 745 && wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 746 wallpaper.wallpaperUpdating = true; 747 } 748 } 749 } 750 } 751 752 @Override 753 public boolean onHandleForceStop(Intent intent, String[] packages, int uid, boolean doit) { 754 synchronized (mLock) { 755 boolean changed = false; 756 if (mCurrentUserId != getChangingUserId()) { 757 return false; 758 } 759 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 760 if (wallpaper != null) { 761 boolean res = doPackagesChangedLocked(doit, wallpaper); 762 changed |= res; 763 } 764 return changed; 765 } 766 } 767 768 @Override 769 public void onSomePackagesChanged() { 770 synchronized (mLock) { 771 if (mCurrentUserId != getChangingUserId()) { 772 return; 773 } 774 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 775 if (wallpaper != null) { 776 doPackagesChangedLocked(true, wallpaper); 777 } 778 } 779 } 780 781 boolean doPackagesChangedLocked(boolean doit, WallpaperData wallpaper) { 782 boolean changed = false; 783 if (wallpaper.wallpaperComponent != null) { 784 int change = isPackageDisappearing(wallpaper.wallpaperComponent 785 .getPackageName()); 786 if (change == PACKAGE_PERMANENT_CHANGE 787 || change == PACKAGE_TEMPORARY_CHANGE) { 788 changed = true; 789 if (doit) { 790 Slog.w(TAG, "Wallpaper uninstalled, removing: " 791 + wallpaper.wallpaperComponent); 792 clearWallpaperLocked(false, FLAG_SYSTEM, wallpaper.userId, null); 793 } 794 } 795 } 796 if (wallpaper.nextWallpaperComponent != null) { 797 int change = isPackageDisappearing(wallpaper.nextWallpaperComponent 798 .getPackageName()); 799 if (change == PACKAGE_PERMANENT_CHANGE 800 || change == PACKAGE_TEMPORARY_CHANGE) { 801 wallpaper.nextWallpaperComponent = null; 802 } 803 } 804 if (wallpaper.wallpaperComponent != null 805 && isPackageModified(wallpaper.wallpaperComponent.getPackageName())) { 806 try { 807 mContext.getPackageManager().getServiceInfo(wallpaper.wallpaperComponent, 808 PackageManager.MATCH_DIRECT_BOOT_AWARE 809 | PackageManager.MATCH_DIRECT_BOOT_UNAWARE); 810 } catch (NameNotFoundException e) { 811 Slog.w(TAG, "Wallpaper component gone, removing: " 812 + wallpaper.wallpaperComponent); 813 clearWallpaperLocked(false, FLAG_SYSTEM, wallpaper.userId, null); 814 } 815 } 816 if (wallpaper.nextWallpaperComponent != null 817 && isPackageModified(wallpaper.nextWallpaperComponent.getPackageName())) { 818 try { 819 mContext.getPackageManager().getServiceInfo(wallpaper.nextWallpaperComponent, 820 PackageManager.MATCH_DIRECT_BOOT_AWARE 821 | PackageManager.MATCH_DIRECT_BOOT_UNAWARE); 822 } catch (NameNotFoundException e) { 823 wallpaper.nextWallpaperComponent = null; 824 } 825 } 826 return changed; 827 } 828 } 829 830 public WallpaperManagerService(Context context) { 831 if (DEBUG) Slog.v(TAG, "WallpaperService startup"); 832 mContext = context; 833 mImageWallpaper = ComponentName.unflattenFromString( 834 context.getResources().getString(R.string.image_wallpaper_component)); 835 mIWindowManager = IWindowManager.Stub.asInterface( 836 ServiceManager.getService(Context.WINDOW_SERVICE)); 837 mIPackageManager = AppGlobals.getPackageManager(); 838 mAppOpsManager = (AppOpsManager) mContext.getSystemService(Context.APP_OPS_SERVICE); 839 mMonitor = new MyPackageMonitor(); 840 mMonitor.register(context, null, UserHandle.ALL, true); 841 getWallpaperDir(UserHandle.USER_SYSTEM).mkdirs(); 842 loadSettingsLocked(UserHandle.USER_SYSTEM, false); 843 } 844 845 private static File getWallpaperDir(int userId) { 846 return Environment.getUserSystemDirectory(userId); 847 } 848 849 @Override 850 protected void finalize() throws Throwable { 851 super.finalize(); 852 for (int i = 0; i < mWallpaperMap.size(); i++) { 853 WallpaperData wallpaper = mWallpaperMap.valueAt(i); 854 wallpaper.wallpaperObserver.stopWatching(); 855 } 856 } 857 858 void systemReady() { 859 if (DEBUG) Slog.v(TAG, "systemReady"); 860 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.USER_SYSTEM); 861 // If we think we're going to be using the system image wallpaper imagery, make 862 // sure we have something to render 863 if (mImageWallpaper.equals(wallpaper.nextWallpaperComponent)) { 864 // No crop file? Make sure we've finished the processing sequence if necessary 865 if (!wallpaper.cropExists()) { 866 if (DEBUG) { 867 Slog.i(TAG, "No crop; regenerating from source"); 868 } 869 generateCrop(wallpaper); 870 } 871 // Still nothing? Fall back to default. 872 if (!wallpaper.cropExists()) { 873 if (DEBUG) { 874 Slog.i(TAG, "Unable to regenerate crop; resetting"); 875 } 876 clearWallpaperLocked(false, FLAG_SYSTEM, UserHandle.USER_SYSTEM, null); 877 } 878 } else { 879 if (DEBUG) { 880 Slog.i(TAG, "Nondefault wallpaper component; gracefully ignoring"); 881 } 882 } 883 884 IntentFilter userFilter = new IntentFilter(); 885 userFilter.addAction(Intent.ACTION_USER_REMOVED); 886 mContext.registerReceiver(new BroadcastReceiver() { 887 @Override 888 public void onReceive(Context context, Intent intent) { 889 final String action = intent.getAction(); 890 if (Intent.ACTION_USER_REMOVED.equals(action)) { 891 onRemoveUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 892 UserHandle.USER_NULL)); 893 } 894 } 895 }, userFilter); 896 897 try { 898 ActivityManagerNative.getDefault().registerUserSwitchObserver( 899 new IUserSwitchObserver.Stub() { 900 @Override 901 public void onUserSwitching(int newUserId, IRemoteCallback reply) { 902 switchUser(newUserId, reply); 903 } 904 905 @Override 906 public void onUserSwitchComplete(int newUserId) throws RemoteException { 907 } 908 909 @Override 910 public void onForegroundProfileSwitch(int newProfileId) { 911 // Ignore. 912 } 913 }); 914 } catch (RemoteException e) { 915 // TODO Auto-generated catch block 916 e.printStackTrace(); 917 } 918 } 919 920 /** Called by SystemBackupAgent */ 921 public String getName() { 922 // Verify caller is the system 923 if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) { 924 throw new RuntimeException("getName() can only be called from the system process"); 925 } 926 synchronized (mLock) { 927 return mWallpaperMap.get(0).name; 928 } 929 } 930 931 void stopObserver(WallpaperData wallpaper) { 932 if (wallpaper != null) { 933 if (wallpaper.wallpaperObserver != null) { 934 wallpaper.wallpaperObserver.stopWatching(); 935 wallpaper.wallpaperObserver = null; 936 } 937 } 938 } 939 940 void stopObserversLocked(int userId) { 941 stopObserver(mWallpaperMap.get(userId)); 942 stopObserver(mLockWallpaperMap.get(userId)); 943 mWallpaperMap.remove(userId); 944 mLockWallpaperMap.remove(userId); 945 } 946 947 void onUnlockUser(int userId) { 948 synchronized (mLock) { 949 if (mCurrentUserId == userId && mWaitingForUnlock) { 950 switchUser(userId, null); 951 } 952 } 953 } 954 955 void onRemoveUser(int userId) { 956 if (userId < 1) return; 957 958 final File wallpaperDir = getWallpaperDir(userId); 959 synchronized (mLock) { 960 stopObserversLocked(userId); 961 for (String filename : sPerUserFiles) { 962 new File(wallpaperDir, filename).delete(); 963 } 964 } 965 } 966 967 void switchUser(int userId, IRemoteCallback reply) { 968 synchronized (mLock) { 969 mCurrentUserId = userId; 970 WallpaperData wallpaper = getWallpaperSafeLocked(userId, FLAG_SYSTEM); 971 // Not started watching yet, in case wallpaper data was loaded for other reasons. 972 if (wallpaper.wallpaperObserver == null) { 973 wallpaper.wallpaperObserver = new WallpaperObserver(wallpaper); 974 wallpaper.wallpaperObserver.startWatching(); 975 } 976 switchWallpaper(wallpaper, reply); 977 } 978 } 979 980 void switchWallpaper(WallpaperData wallpaper, IRemoteCallback reply) { 981 synchronized (mLock) { 982 mWaitingForUnlock = false; 983 final ComponentName cname = wallpaper.wallpaperComponent != null ? 984 wallpaper.wallpaperComponent : wallpaper.nextWallpaperComponent; 985 if (!bindWallpaperComponentLocked(cname, true, false, wallpaper, reply)) { 986 // We failed to bind the desired wallpaper, but that might 987 // happen if the wallpaper isn't direct-boot aware 988 ServiceInfo si = null; 989 try { 990 si = mIPackageManager.getServiceInfo(cname, 991 PackageManager.MATCH_DIRECT_BOOT_UNAWARE, wallpaper.userId); 992 } catch (RemoteException ignored) { 993 } 994 995 if (si == null) { 996 Slog.w(TAG, "Failure starting previous wallpaper; clearing"); 997 clearWallpaperLocked(false, FLAG_SYSTEM, wallpaper.userId, reply); 998 } else { 999 Slog.w(TAG, "Wallpaper isn't direct boot aware; using fallback until unlocked"); 1000 // We might end up persisting the current wallpaper data 1001 // while locked, so pretend like the component was actually 1002 // bound into place 1003 wallpaper.wallpaperComponent = wallpaper.nextWallpaperComponent; 1004 final WallpaperData fallback = new WallpaperData(wallpaper.userId, 1005 WALLPAPER_LOCK_ORIG, WALLPAPER_LOCK_CROP); 1006 ensureSaneWallpaperData(fallback); 1007 bindWallpaperComponentLocked(mImageWallpaper, true, false, fallback, reply); 1008 mWaitingForUnlock = true; 1009 } 1010 } 1011 } 1012 } 1013 1014 @Override 1015 public void clearWallpaper(String callingPackage, int which, int userId) { 1016 if (DEBUG) Slog.v(TAG, "clearWallpaper"); 1017 checkPermission(android.Manifest.permission.SET_WALLPAPER); 1018 if (!isWallpaperSupported(callingPackage) || !isSetWallpaperAllowed(callingPackage)) { 1019 return; 1020 } 1021 userId = ActivityManager.handleIncomingUser(Binder.getCallingPid(), 1022 Binder.getCallingUid(), userId, false, true, "clearWallpaper", null); 1023 1024 synchronized (mLock) { 1025 clearWallpaperLocked(false, which, userId, null); 1026 } 1027 } 1028 1029 void clearWallpaperLocked(boolean defaultFailed, int which, int userId, IRemoteCallback reply) { 1030 if (which != FLAG_SYSTEM && which != FLAG_LOCK) { 1031 throw new IllegalArgumentException("Must specify exactly one kind of wallpaper to read"); 1032 } 1033 1034 WallpaperData wallpaper = null; 1035 if (which == FLAG_LOCK) { 1036 wallpaper = mLockWallpaperMap.get(userId); 1037 if (wallpaper == null) { 1038 // It's already gone; we're done. 1039 if (DEBUG) { 1040 Slog.i(TAG, "Lock wallpaper already cleared"); 1041 } 1042 return; 1043 } 1044 } else { 1045 wallpaper = mWallpaperMap.get(userId); 1046 if (wallpaper == null) { 1047 // Might need to bring it in the first time to establish our rewrite 1048 loadSettingsLocked(userId, false); 1049 wallpaper = mWallpaperMap.get(userId); 1050 } 1051 } 1052 if (wallpaper == null) { 1053 return; 1054 } 1055 1056 final long ident = Binder.clearCallingIdentity(); 1057 try { 1058 if (wallpaper.wallpaperFile.exists()) { 1059 wallpaper.wallpaperFile.delete(); 1060 wallpaper.cropFile.delete(); 1061 if (which == FLAG_LOCK) { 1062 mLockWallpaperMap.remove(userId); 1063 final IWallpaperManagerCallback cb = mKeyguardListener; 1064 if (cb != null) { 1065 if (DEBUG) { 1066 Slog.i(TAG, "Notifying keyguard of lock wallpaper clear"); 1067 } 1068 try { 1069 cb.onWallpaperChanged(); 1070 } catch (RemoteException e) { 1071 // Oh well it went away; no big deal 1072 } 1073 } 1074 saveSettingsLocked(userId); 1075 return; 1076 } 1077 } 1078 1079 RuntimeException e = null; 1080 try { 1081 wallpaper.imageWallpaperPending = false; 1082 if (userId != mCurrentUserId) return; 1083 if (bindWallpaperComponentLocked(defaultFailed 1084 ? mImageWallpaper 1085 : null, true, false, wallpaper, reply)) { 1086 return; 1087 } 1088 } catch (IllegalArgumentException e1) { 1089 e = e1; 1090 } 1091 1092 // This can happen if the default wallpaper component doesn't 1093 // exist. This should be a system configuration problem, but 1094 // let's not let it crash the system and just live with no 1095 // wallpaper. 1096 Slog.e(TAG, "Default wallpaper component not found!", e); 1097 clearWallpaperComponentLocked(wallpaper); 1098 if (reply != null) { 1099 try { 1100 reply.sendResult(null); 1101 } catch (RemoteException e1) { 1102 } 1103 } 1104 } finally { 1105 Binder.restoreCallingIdentity(ident); 1106 } 1107 } 1108 1109 public boolean hasNamedWallpaper(String name) { 1110 synchronized (mLock) { 1111 List<UserInfo> users; 1112 long ident = Binder.clearCallingIdentity(); 1113 try { 1114 users = ((UserManager) mContext.getSystemService(Context.USER_SERVICE)).getUsers(); 1115 } finally { 1116 Binder.restoreCallingIdentity(ident); 1117 } 1118 for (UserInfo user: users) { 1119 // ignore managed profiles 1120 if (user.isManagedProfile()) { 1121 continue; 1122 } 1123 WallpaperData wd = mWallpaperMap.get(user.id); 1124 if (wd == null) { 1125 // User hasn't started yet, so load her settings to peek at the wallpaper 1126 loadSettingsLocked(user.id, false); 1127 wd = mWallpaperMap.get(user.id); 1128 } 1129 if (wd != null && name.equals(wd.name)) { 1130 return true; 1131 } 1132 } 1133 } 1134 return false; 1135 } 1136 1137 private Point getDefaultDisplaySize() { 1138 Point p = new Point(); 1139 WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE); 1140 Display d = wm.getDefaultDisplay(); 1141 d.getRealSize(p); 1142 return p; 1143 } 1144 1145 public void setDimensionHints(int width, int height, String callingPackage) 1146 throws RemoteException { 1147 checkPermission(android.Manifest.permission.SET_WALLPAPER_HINTS); 1148 if (!isWallpaperSupported(callingPackage)) { 1149 return; 1150 } 1151 synchronized (mLock) { 1152 int userId = UserHandle.getCallingUserId(); 1153 WallpaperData wallpaper = getWallpaperSafeLocked(userId, FLAG_SYSTEM); 1154 if (width <= 0 || height <= 0) { 1155 throw new IllegalArgumentException("width and height must be > 0"); 1156 } 1157 // Make sure it is at least as large as the display. 1158 Point displaySize = getDefaultDisplaySize(); 1159 width = Math.max(width, displaySize.x); 1160 height = Math.max(height, displaySize.y); 1161 1162 if (width != wallpaper.width || height != wallpaper.height) { 1163 wallpaper.width = width; 1164 wallpaper.height = height; 1165 saveSettingsLocked(userId); 1166 if (mCurrentUserId != userId) return; // Don't change the properties now 1167 if (wallpaper.connection != null) { 1168 if (wallpaper.connection.mEngine != null) { 1169 try { 1170 wallpaper.connection.mEngine.setDesiredSize( 1171 width, height); 1172 } catch (RemoteException e) { 1173 } 1174 notifyCallbacksLocked(wallpaper); 1175 } else if (wallpaper.connection.mService != null) { 1176 // We've attached to the service but the engine hasn't attached back to us 1177 // yet. This means it will be created with the previous dimensions, so we 1178 // need to update it to the new dimensions once it attaches. 1179 wallpaper.connection.mDimensionsChanged = true; 1180 } 1181 } 1182 } 1183 } 1184 } 1185 1186 public int getWidthHint() throws RemoteException { 1187 synchronized (mLock) { 1188 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.getCallingUserId()); 1189 if (wallpaper != null) { 1190 return wallpaper.width; 1191 } else { 1192 return 0; 1193 } 1194 } 1195 } 1196 1197 public int getHeightHint() throws RemoteException { 1198 synchronized (mLock) { 1199 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.getCallingUserId()); 1200 if (wallpaper != null) { 1201 return wallpaper.height; 1202 } else { 1203 return 0; 1204 } 1205 } 1206 } 1207 1208 public void setDisplayPadding(Rect padding, String callingPackage) { 1209 checkPermission(android.Manifest.permission.SET_WALLPAPER_HINTS); 1210 if (!isWallpaperSupported(callingPackage)) { 1211 return; 1212 } 1213 synchronized (mLock) { 1214 int userId = UserHandle.getCallingUserId(); 1215 WallpaperData wallpaper = getWallpaperSafeLocked(userId, FLAG_SYSTEM); 1216 if (padding.left < 0 || padding.top < 0 || padding.right < 0 || padding.bottom < 0) { 1217 throw new IllegalArgumentException("padding must be positive: " + padding); 1218 } 1219 1220 if (!padding.equals(wallpaper.padding)) { 1221 wallpaper.padding.set(padding); 1222 saveSettingsLocked(userId); 1223 if (mCurrentUserId != userId) return; // Don't change the properties now 1224 if (wallpaper.connection != null) { 1225 if (wallpaper.connection.mEngine != null) { 1226 try { 1227 wallpaper.connection.mEngine.setDisplayPadding(padding); 1228 } catch (RemoteException e) { 1229 } 1230 notifyCallbacksLocked(wallpaper); 1231 } else if (wallpaper.connection.mService != null) { 1232 // We've attached to the service but the engine hasn't attached back to us 1233 // yet. This means it will be created with the previous dimensions, so we 1234 // need to update it to the new dimensions once it attaches. 1235 wallpaper.connection.mPaddingChanged = true; 1236 } 1237 } 1238 } 1239 } 1240 } 1241 1242 @Override 1243 public ParcelFileDescriptor getWallpaper(IWallpaperManagerCallback cb, final int which, 1244 Bundle outParams, int wallpaperUserId) { 1245 wallpaperUserId = ActivityManager.handleIncomingUser(Binder.getCallingPid(), 1246 Binder.getCallingUid(), wallpaperUserId, false, true, "getWallpaper", null); 1247 1248 if (which != FLAG_SYSTEM && which != FLAG_LOCK) { 1249 throw new IllegalArgumentException("Must specify exactly one kind of wallpaper to read"); 1250 } 1251 1252 synchronized (mLock) { 1253 final SparseArray<WallpaperData> whichSet = 1254 (which == FLAG_LOCK) ? mLockWallpaperMap : mWallpaperMap; 1255 WallpaperData wallpaper = whichSet.get(wallpaperUserId); 1256 if (wallpaper == null) { 1257 // common case, this is the first lookup post-boot of the system or 1258 // unified lock, so we bring up the saved state lazily now and recheck. 1259 loadSettingsLocked(wallpaperUserId, false); 1260 wallpaper = whichSet.get(wallpaperUserId); 1261 if (wallpaper == null) { 1262 return null; 1263 } 1264 } 1265 try { 1266 if (outParams != null) { 1267 outParams.putInt("width", wallpaper.width); 1268 outParams.putInt("height", wallpaper.height); 1269 } 1270 if (cb != null) { 1271 wallpaper.callbacks.register(cb); 1272 } 1273 if (!wallpaper.cropFile.exists()) { 1274 return null; 1275 } 1276 return ParcelFileDescriptor.open(wallpaper.cropFile, MODE_READ_ONLY); 1277 } catch (FileNotFoundException e) { 1278 /* Shouldn't happen as we check to see if the file exists */ 1279 Slog.w(TAG, "Error getting wallpaper", e); 1280 } 1281 return null; 1282 } 1283 } 1284 1285 @Override 1286 public WallpaperInfo getWallpaperInfo() { 1287 int userId = UserHandle.getCallingUserId(); 1288 synchronized (mLock) { 1289 WallpaperData wallpaper = mWallpaperMap.get(userId); 1290 if (wallpaper != null && wallpaper.connection != null) { 1291 return wallpaper.connection.mInfo; 1292 } 1293 return null; 1294 } 1295 } 1296 1297 @Override 1298 public int getWallpaperIdForUser(int which, int userId) { 1299 userId = ActivityManager.handleIncomingUser(Binder.getCallingPid(), 1300 Binder.getCallingUid(), userId, false, true, "getWallpaperIdForUser", null); 1301 1302 if (which != FLAG_SYSTEM && which != FLAG_LOCK) { 1303 throw new IllegalArgumentException("Must specify exactly one kind of wallpaper"); 1304 } 1305 1306 final SparseArray<WallpaperData> map = 1307 (which == FLAG_LOCK) ? mLockWallpaperMap : mWallpaperMap; 1308 synchronized (mLock) { 1309 WallpaperData wallpaper = map.get(userId); 1310 if (wallpaper != null) { 1311 return wallpaper.wallpaperId; 1312 } 1313 } 1314 return -1; 1315 } 1316 1317 @Override 1318 public boolean setLockWallpaperCallback(IWallpaperManagerCallback cb) { 1319 checkPermission(android.Manifest.permission.INTERNAL_SYSTEM_WINDOW); 1320 synchronized (mLock) { 1321 mKeyguardListener = cb; 1322 } 1323 return true; 1324 } 1325 1326 @Override 1327 public ParcelFileDescriptor setWallpaper(String name, String callingPackage, 1328 Rect cropHint, boolean allowBackup, Bundle extras, int which, 1329 IWallpaperManagerCallback completion) { 1330 checkPermission(android.Manifest.permission.SET_WALLPAPER); 1331 1332 if ((which & (FLAG_LOCK|FLAG_SYSTEM)) == 0) { 1333 final String msg = "Must specify a valid wallpaper category to set"; 1334 Slog.e(TAG, msg); 1335 throw new IllegalArgumentException(msg); 1336 } 1337 1338 if (!isWallpaperSupported(callingPackage) || !isSetWallpaperAllowed(callingPackage)) { 1339 return null; 1340 } 1341 1342 // "null" means the no-op crop, preserving the full input image 1343 if (cropHint == null) { 1344 cropHint = new Rect(0, 0, 0, 0); 1345 } else { 1346 if (cropHint.isEmpty() 1347 || cropHint.left < 0 1348 || cropHint.top < 0) { 1349 throw new IllegalArgumentException("Invalid crop rect supplied: " + cropHint); 1350 } 1351 } 1352 1353 final int userId = UserHandle.getCallingUserId(); 1354 1355 synchronized (mLock) { 1356 if (DEBUG) Slog.v(TAG, "setWallpaper which=0x" + Integer.toHexString(which)); 1357 WallpaperData wallpaper; 1358 1359 /* If we're setting system but not lock, and lock is currently sharing the system 1360 * wallpaper, we need to migrate that image over to being lock-only before 1361 * the caller here writes new bitmap data. 1362 */ 1363 if (which == FLAG_SYSTEM && mLockWallpaperMap.get(userId) == null) { 1364 if (DEBUG) { 1365 Slog.i(TAG, "Migrating system->lock to preserve"); 1366 } 1367 migrateSystemToLockWallpaperLocked(userId); 1368 } 1369 1370 wallpaper = getWallpaperSafeLocked(userId, which); 1371 final long ident = Binder.clearCallingIdentity(); 1372 try { 1373 ParcelFileDescriptor pfd = updateWallpaperBitmapLocked(name, wallpaper, extras); 1374 if (pfd != null) { 1375 wallpaper.imageWallpaperPending = true; 1376 wallpaper.whichPending = which; 1377 wallpaper.setComplete = completion; 1378 wallpaper.cropHint.set(cropHint); 1379 if ((which & FLAG_SYSTEM) != 0) { 1380 wallpaper.allowBackup = allowBackup; 1381 } 1382 } 1383 return pfd; 1384 } finally { 1385 Binder.restoreCallingIdentity(ident); 1386 } 1387 } 1388 } 1389 1390 private void migrateSystemToLockWallpaperLocked(int userId) { 1391 WallpaperData sysWP = mWallpaperMap.get(userId); 1392 if (sysWP == null) { 1393 if (DEBUG) { 1394 Slog.i(TAG, "No system wallpaper? Not tracking for lock-only"); 1395 } 1396 return; 1397 } 1398 1399 // We know a-priori that there is no lock-only wallpaper currently 1400 WallpaperData lockWP = new WallpaperData(userId, 1401 WALLPAPER_LOCK_ORIG, WALLPAPER_LOCK_CROP); 1402 lockWP.wallpaperId = sysWP.wallpaperId; 1403 lockWP.cropHint.set(sysWP.cropHint); 1404 lockWP.width = sysWP.width; 1405 lockWP.height = sysWP.height; 1406 lockWP.allowBackup = false; 1407 1408 // Migrate the bitmap files outright; no need to copy 1409 try { 1410 Os.rename(sysWP.wallpaperFile.getAbsolutePath(), lockWP.wallpaperFile.getAbsolutePath()); 1411 Os.rename(sysWP.cropFile.getAbsolutePath(), lockWP.cropFile.getAbsolutePath()); 1412 } catch (ErrnoException e) { 1413 Slog.e(TAG, "Can't migrate system wallpaper: " + e.getMessage()); 1414 lockWP.wallpaperFile.delete(); 1415 lockWP.cropFile.delete(); 1416 return; 1417 } 1418 1419 mLockWallpaperMap.put(userId, lockWP); 1420 } 1421 1422 ParcelFileDescriptor updateWallpaperBitmapLocked(String name, WallpaperData wallpaper, 1423 Bundle extras) { 1424 if (name == null) name = ""; 1425 try { 1426 File dir = getWallpaperDir(wallpaper.userId); 1427 if (!dir.exists()) { 1428 dir.mkdir(); 1429 FileUtils.setPermissions( 1430 dir.getPath(), 1431 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 1432 -1, -1); 1433 } 1434 ParcelFileDescriptor fd = ParcelFileDescriptor.open(wallpaper.wallpaperFile, 1435 MODE_CREATE|MODE_READ_WRITE|MODE_TRUNCATE); 1436 if (!SELinux.restorecon(wallpaper.wallpaperFile)) { 1437 return null; 1438 } 1439 wallpaper.name = name; 1440 wallpaper.wallpaperId = makeWallpaperIdLocked(); 1441 if (extras != null) { 1442 extras.putInt(WallpaperManager.EXTRA_NEW_WALLPAPER_ID, wallpaper.wallpaperId); 1443 } 1444 if (DEBUG) { 1445 Slog.v(TAG, "updateWallpaperBitmapLocked() : id=" + wallpaper.wallpaperId 1446 + " name=" + name + " file=" + wallpaper.wallpaperFile.getName()); 1447 } 1448 return fd; 1449 } catch (FileNotFoundException e) { 1450 Slog.w(TAG, "Error setting wallpaper", e); 1451 } 1452 return null; 1453 } 1454 1455 @Override 1456 public void setWallpaperComponentChecked(ComponentName name, String callingPackage) { 1457 if (isWallpaperSupported(callingPackage) && isSetWallpaperAllowed(callingPackage)) { 1458 setWallpaperComponent(name); 1459 } 1460 } 1461 1462 // ToDo: Remove this version of the function 1463 @Override 1464 public void setWallpaperComponent(ComponentName name) { 1465 checkPermission(android.Manifest.permission.SET_WALLPAPER_COMPONENT); 1466 synchronized (mLock) { 1467 if (DEBUG) Slog.v(TAG, "setWallpaperComponent name=" + name); 1468 int userId = UserHandle.getCallingUserId(); 1469 WallpaperData wallpaper = mWallpaperMap.get(userId); 1470 if (wallpaper == null) { 1471 throw new IllegalStateException("Wallpaper not yet initialized for user " + userId); 1472 } 1473 final long ident = Binder.clearCallingIdentity(); 1474 try { 1475 wallpaper.imageWallpaperPending = false; 1476 if (bindWallpaperComponentLocked(name, false, true, wallpaper, null)) { 1477 wallpaper.wallpaperId = makeWallpaperIdLocked(); 1478 notifyCallbacksLocked(wallpaper); 1479 } 1480 } finally { 1481 Binder.restoreCallingIdentity(ident); 1482 } 1483 } 1484 } 1485 1486 boolean bindWallpaperComponentLocked(ComponentName componentName, boolean force, 1487 boolean fromUser, WallpaperData wallpaper, IRemoteCallback reply) { 1488 if (DEBUG) Slog.v(TAG, "bindWallpaperComponentLocked: componentName=" + componentName); 1489 // Has the component changed? 1490 if (!force) { 1491 if (wallpaper.connection != null) { 1492 if (wallpaper.wallpaperComponent == null) { 1493 if (componentName == null) { 1494 if (DEBUG) Slog.v(TAG, "bindWallpaperComponentLocked: still using default"); 1495 // Still using default wallpaper. 1496 return true; 1497 } 1498 } else if (wallpaper.wallpaperComponent.equals(componentName)) { 1499 // Changing to same wallpaper. 1500 if (DEBUG) Slog.v(TAG, "same wallpaper"); 1501 return true; 1502 } 1503 } 1504 } 1505 1506 try { 1507 if (componentName == null) { 1508 componentName = WallpaperManager.getDefaultWallpaperComponent(mContext); 1509 if (componentName == null) { 1510 // Fall back to static image wallpaper 1511 componentName = mImageWallpaper; 1512 //clearWallpaperComponentLocked(); 1513 //return; 1514 if (DEBUG) Slog.v(TAG, "Using image wallpaper"); 1515 } 1516 } 1517 int serviceUserId = wallpaper.userId; 1518 ServiceInfo si = mIPackageManager.getServiceInfo(componentName, 1519 PackageManager.GET_META_DATA | PackageManager.GET_PERMISSIONS, serviceUserId); 1520 if (si == null) { 1521 // The wallpaper component we're trying to use doesn't exist 1522 Slog.w(TAG, "Attempted wallpaper " + componentName + " is unavailable"); 1523 return false; 1524 } 1525 if (!android.Manifest.permission.BIND_WALLPAPER.equals(si.permission)) { 1526 String msg = "Selected service does not require " 1527 + android.Manifest.permission.BIND_WALLPAPER 1528 + ": " + componentName; 1529 if (fromUser) { 1530 throw new SecurityException(msg); 1531 } 1532 Slog.w(TAG, msg); 1533 return false; 1534 } 1535 1536 WallpaperInfo wi = null; 1537 1538 Intent intent = new Intent(WallpaperService.SERVICE_INTERFACE); 1539 if (componentName != null && !componentName.equals(mImageWallpaper)) { 1540 // Make sure the selected service is actually a wallpaper service. 1541 List<ResolveInfo> ris = 1542 mIPackageManager.queryIntentServices(intent, 1543 intent.resolveTypeIfNeeded(mContext.getContentResolver()), 1544 PackageManager.GET_META_DATA, serviceUserId).getList(); 1545 for (int i=0; i<ris.size(); i++) { 1546 ServiceInfo rsi = ris.get(i).serviceInfo; 1547 if (rsi.name.equals(si.name) && 1548 rsi.packageName.equals(si.packageName)) { 1549 try { 1550 wi = new WallpaperInfo(mContext, ris.get(i)); 1551 } catch (XmlPullParserException e) { 1552 if (fromUser) { 1553 throw new IllegalArgumentException(e); 1554 } 1555 Slog.w(TAG, e); 1556 return false; 1557 } catch (IOException e) { 1558 if (fromUser) { 1559 throw new IllegalArgumentException(e); 1560 } 1561 Slog.w(TAG, e); 1562 return false; 1563 } 1564 break; 1565 } 1566 } 1567 if (wi == null) { 1568 String msg = "Selected service is not a wallpaper: " 1569 + componentName; 1570 if (fromUser) { 1571 throw new SecurityException(msg); 1572 } 1573 Slog.w(TAG, msg); 1574 return false; 1575 } 1576 } 1577 1578 // Bind the service! 1579 if (DEBUG) Slog.v(TAG, "Binding to:" + componentName); 1580 WallpaperConnection newConn = new WallpaperConnection(wi, wallpaper); 1581 intent.setComponent(componentName); 1582 intent.putExtra(Intent.EXTRA_CLIENT_LABEL, 1583 com.android.internal.R.string.wallpaper_binding_label); 1584 intent.putExtra(Intent.EXTRA_CLIENT_INTENT, PendingIntent.getActivityAsUser( 1585 mContext, 0, 1586 Intent.createChooser(new Intent(Intent.ACTION_SET_WALLPAPER), 1587 mContext.getText(com.android.internal.R.string.chooser_wallpaper)), 1588 0, null, new UserHandle(serviceUserId))); 1589 if (!mContext.bindServiceAsUser(intent, newConn, 1590 Context.BIND_AUTO_CREATE | Context.BIND_SHOWING_UI 1591 | Context.BIND_FOREGROUND_SERVICE_WHILE_AWAKE, 1592 new UserHandle(serviceUserId))) { 1593 String msg = "Unable to bind service: " 1594 + componentName; 1595 if (fromUser) { 1596 throw new IllegalArgumentException(msg); 1597 } 1598 Slog.w(TAG, msg); 1599 return false; 1600 } 1601 if (wallpaper.userId == mCurrentUserId && mLastWallpaper != null) { 1602 detachWallpaperLocked(mLastWallpaper); 1603 } 1604 wallpaper.wallpaperComponent = componentName; 1605 wallpaper.connection = newConn; 1606 newConn.mReply = reply; 1607 try { 1608 if (wallpaper.userId == mCurrentUserId) { 1609 if (DEBUG) 1610 Slog.v(TAG, "Adding window token: " + newConn.mToken); 1611 mIWindowManager.addWindowToken(newConn.mToken, 1612 WindowManager.LayoutParams.TYPE_WALLPAPER); 1613 mLastWallpaper = wallpaper; 1614 } 1615 } catch (RemoteException e) { 1616 } 1617 } catch (RemoteException e) { 1618 String msg = "Remote exception for " + componentName + "\n" + e; 1619 if (fromUser) { 1620 throw new IllegalArgumentException(msg); 1621 } 1622 Slog.w(TAG, msg); 1623 return false; 1624 } 1625 return true; 1626 } 1627 1628 void detachWallpaperLocked(WallpaperData wallpaper) { 1629 if (wallpaper.connection != null) { 1630 if (wallpaper.connection.mReply != null) { 1631 try { 1632 wallpaper.connection.mReply.sendResult(null); 1633 } catch (RemoteException e) { 1634 } 1635 wallpaper.connection.mReply = null; 1636 } 1637 if (wallpaper.connection.mEngine != null) { 1638 try { 1639 wallpaper.connection.mEngine.destroy(); 1640 } catch (RemoteException e) { 1641 } 1642 } 1643 mContext.unbindService(wallpaper.connection); 1644 try { 1645 if (DEBUG) 1646 Slog.v(TAG, "Removing window token: " + wallpaper.connection.mToken); 1647 mIWindowManager.removeWindowToken(wallpaper.connection.mToken); 1648 } catch (RemoteException e) { 1649 } 1650 wallpaper.connection.mService = null; 1651 wallpaper.connection.mEngine = null; 1652 wallpaper.connection = null; 1653 } 1654 } 1655 1656 void clearWallpaperComponentLocked(WallpaperData wallpaper) { 1657 wallpaper.wallpaperComponent = null; 1658 detachWallpaperLocked(wallpaper); 1659 } 1660 1661 void attachServiceLocked(WallpaperConnection conn, WallpaperData wallpaper) { 1662 try { 1663 conn.mService.attach(conn, conn.mToken, 1664 WindowManager.LayoutParams.TYPE_WALLPAPER, false, 1665 wallpaper.width, wallpaper.height, wallpaper.padding); 1666 } catch (RemoteException e) { 1667 Slog.w(TAG, "Failed attaching wallpaper; clearing", e); 1668 if (!wallpaper.wallpaperUpdating) { 1669 bindWallpaperComponentLocked(null, false, false, wallpaper, null); 1670 } 1671 } 1672 } 1673 1674 private void notifyCallbacksLocked(WallpaperData wallpaper) { 1675 final int n = wallpaper.callbacks.beginBroadcast(); 1676 for (int i = 0; i < n; i++) { 1677 try { 1678 wallpaper.callbacks.getBroadcastItem(i).onWallpaperChanged(); 1679 } catch (RemoteException e) { 1680 1681 // The RemoteCallbackList will take care of removing 1682 // the dead object for us. 1683 } 1684 } 1685 wallpaper.callbacks.finishBroadcast(); 1686 final Intent intent = new Intent(Intent.ACTION_WALLPAPER_CHANGED); 1687 mContext.sendBroadcastAsUser(intent, new UserHandle(mCurrentUserId)); 1688 } 1689 1690 private void checkPermission(String permission) { 1691 if (PackageManager.PERMISSION_GRANTED!= mContext.checkCallingOrSelfPermission(permission)) { 1692 throw new SecurityException("Access denied to process: " + Binder.getCallingPid() 1693 + ", must have permission " + permission); 1694 } 1695 } 1696 1697 /** 1698 * Certain user types do not support wallpapers (e.g. managed profiles). The check is 1699 * implemented through through the OP_WRITE_WALLPAPER AppOp. 1700 */ 1701 public boolean isWallpaperSupported(String callingPackage) { 1702 return mAppOpsManager.checkOpNoThrow(AppOpsManager.OP_WRITE_WALLPAPER, Binder.getCallingUid(), 1703 callingPackage) == AppOpsManager.MODE_ALLOWED; 1704 } 1705 1706 @Override 1707 public boolean isSetWallpaperAllowed(String callingPackage) { 1708 final PackageManager pm = mContext.getPackageManager(); 1709 String[] uidPackages = pm.getPackagesForUid(Binder.getCallingUid()); 1710 boolean uidMatchPackage = Arrays.asList(uidPackages).contains(callingPackage); 1711 if (!uidMatchPackage) { 1712 return false; // callingPackage was faked. 1713 } 1714 1715 final DevicePolicyManager dpm = mContext.getSystemService(DevicePolicyManager.class); 1716 if (dpm.isDeviceOwnerApp(callingPackage) || dpm.isProfileOwnerApp(callingPackage)) { 1717 return true; 1718 } 1719 final UserManager um = (UserManager) mContext.getSystemService(Context.USER_SERVICE); 1720 return !um.hasUserRestriction(UserManager.DISALLOW_SET_WALLPAPER); 1721 } 1722 1723 @Override 1724 public boolean isWallpaperBackupEligible(int userId) { 1725 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 1726 throw new SecurityException("Only the system may call isWallpaperBackupEligible"); 1727 } 1728 1729 WallpaperData wallpaper = getWallpaperSafeLocked(userId, FLAG_SYSTEM); 1730 return (wallpaper != null) ? wallpaper.allowBackup : false; 1731 } 1732 1733 private static JournaledFile makeJournaledFile(int userId) { 1734 final String base = new File(getWallpaperDir(userId), WALLPAPER_INFO).getAbsolutePath(); 1735 return new JournaledFile(new File(base), new File(base + ".tmp")); 1736 } 1737 1738 private void saveSettingsLocked(int userId) { 1739 JournaledFile journal = makeJournaledFile(userId); 1740 FileOutputStream fstream = null; 1741 BufferedOutputStream stream = null; 1742 try { 1743 XmlSerializer out = new FastXmlSerializer(); 1744 fstream = new FileOutputStream(journal.chooseForWrite(), false); 1745 stream = new BufferedOutputStream(fstream); 1746 out.setOutput(stream, StandardCharsets.UTF_8.name()); 1747 out.startDocument(null, true); 1748 1749 WallpaperData wallpaper; 1750 1751 wallpaper = mWallpaperMap.get(userId); 1752 if (wallpaper != null) { 1753 writeWallpaperAttributes(out, "wp", wallpaper); 1754 } 1755 wallpaper = mLockWallpaperMap.get(userId); 1756 if (wallpaper != null) { 1757 writeWallpaperAttributes(out, "kwp", wallpaper); 1758 } 1759 1760 out.endDocument(); 1761 1762 stream.flush(); // also flushes fstream 1763 FileUtils.sync(fstream); 1764 stream.close(); // also closes fstream 1765 journal.commit(); 1766 } catch (IOException e) { 1767 IoUtils.closeQuietly(stream); 1768 journal.rollback(); 1769 } 1770 } 1771 1772 private void writeWallpaperAttributes(XmlSerializer out, String tag, WallpaperData wallpaper) 1773 throws IllegalArgumentException, IllegalStateException, IOException { 1774 out.startTag(null, tag); 1775 out.attribute(null, "id", Integer.toString(wallpaper.wallpaperId)); 1776 out.attribute(null, "width", Integer.toString(wallpaper.width)); 1777 out.attribute(null, "height", Integer.toString(wallpaper.height)); 1778 1779 out.attribute(null, "cropLeft", Integer.toString(wallpaper.cropHint.left)); 1780 out.attribute(null, "cropTop", Integer.toString(wallpaper.cropHint.top)); 1781 out.attribute(null, "cropRight", Integer.toString(wallpaper.cropHint.right)); 1782 out.attribute(null, "cropBottom", Integer.toString(wallpaper.cropHint.bottom)); 1783 1784 if (wallpaper.padding.left != 0) { 1785 out.attribute(null, "paddingLeft", Integer.toString(wallpaper.padding.left)); 1786 } 1787 if (wallpaper.padding.top != 0) { 1788 out.attribute(null, "paddingTop", Integer.toString(wallpaper.padding.top)); 1789 } 1790 if (wallpaper.padding.right != 0) { 1791 out.attribute(null, "paddingRight", Integer.toString(wallpaper.padding.right)); 1792 } 1793 if (wallpaper.padding.bottom != 0) { 1794 out.attribute(null, "paddingBottom", Integer.toString(wallpaper.padding.bottom)); 1795 } 1796 1797 out.attribute(null, "name", wallpaper.name); 1798 if (wallpaper.wallpaperComponent != null 1799 && !wallpaper.wallpaperComponent.equals(mImageWallpaper)) { 1800 out.attribute(null, "component", 1801 wallpaper.wallpaperComponent.flattenToShortString()); 1802 } 1803 1804 if (wallpaper.allowBackup) { 1805 out.attribute(null, "backup", "true"); 1806 } 1807 1808 out.endTag(null, tag); 1809 } 1810 1811 private void migrateFromOld() { 1812 File oldWallpaper = new File(WallpaperBackupHelper.WALLPAPER_IMAGE_KEY); 1813 File oldInfo = new File(WallpaperBackupHelper.WALLPAPER_INFO_KEY); 1814 if (oldWallpaper.exists()) { 1815 File newWallpaper = new File(getWallpaperDir(0), WALLPAPER); 1816 oldWallpaper.renameTo(newWallpaper); 1817 } 1818 if (oldInfo.exists()) { 1819 File newInfo = new File(getWallpaperDir(0), WALLPAPER_INFO); 1820 oldInfo.renameTo(newInfo); 1821 } 1822 } 1823 1824 private int getAttributeInt(XmlPullParser parser, String name, int defValue) { 1825 String value = parser.getAttributeValue(null, name); 1826 if (value == null) { 1827 return defValue; 1828 } 1829 return Integer.parseInt(value); 1830 } 1831 1832 /** 1833 * Sometimes it is expected the wallpaper map may not have a user's data. E.g. This could 1834 * happen during user switch. The async user switch observer may not have received 1835 * the event yet. We use this safe method when we don't care about this ordering and just 1836 * want to update the data. The data is going to be applied when the user switch observer 1837 * is eventually executed. 1838 */ 1839 private WallpaperData getWallpaperSafeLocked(int userId, int which) { 1840 // We're setting either just system (work with the system wallpaper), 1841 // both (also work with the system wallpaper), or just the lock 1842 // wallpaper (update against the existing lock wallpaper if any). 1843 // Combined or just-system operations use the 'system' WallpaperData 1844 // for this use; lock-only operations use the dedicated one. 1845 final SparseArray<WallpaperData> whichSet = 1846 (which == FLAG_LOCK) ? mLockWallpaperMap : mWallpaperMap; 1847 WallpaperData wallpaper = whichSet.get(userId); 1848 if (wallpaper == null) { 1849 // common case, this is the first lookup post-boot of the system or 1850 // unified lock, so we bring up the saved state lazily now and recheck. 1851 loadSettingsLocked(userId, false); 1852 wallpaper = whichSet.get(userId); 1853 // if it's still null here, this is a lock-only operation and there is not 1854 // yet a lock-only wallpaper set for this user, so we need to establish 1855 // it now. 1856 if (wallpaper == null) { 1857 if (which == FLAG_LOCK) { 1858 wallpaper = new WallpaperData(userId, 1859 WALLPAPER_LOCK_ORIG, WALLPAPER_LOCK_CROP); 1860 mLockWallpaperMap.put(userId, wallpaper); 1861 ensureSaneWallpaperData(wallpaper); 1862 } else { 1863 // sanity fallback: we're in bad shape, but establishing a known 1864 // valid system+lock WallpaperData will keep us from dying. 1865 Slog.wtf(TAG, "Didn't find wallpaper in non-lock case!"); 1866 wallpaper = new WallpaperData(userId, WALLPAPER, WALLPAPER_CROP); 1867 mWallpaperMap.put(userId, wallpaper); 1868 ensureSaneWallpaperData(wallpaper); 1869 } 1870 } 1871 } 1872 return wallpaper; 1873 } 1874 1875 private void loadSettingsLocked(int userId, boolean keepDimensionHints) { 1876 if (DEBUG) Slog.v(TAG, "loadSettingsLocked"); 1877 1878 JournaledFile journal = makeJournaledFile(userId); 1879 FileInputStream stream = null; 1880 File file = journal.chooseForRead(); 1881 if (!file.exists()) { 1882 // This should only happen one time, when upgrading from a legacy system 1883 migrateFromOld(); 1884 } 1885 WallpaperData wallpaper = mWallpaperMap.get(userId); 1886 if (wallpaper == null) { 1887 wallpaper = new WallpaperData(userId, WALLPAPER, WALLPAPER_CROP); 1888 wallpaper.allowBackup = true; 1889 mWallpaperMap.put(userId, wallpaper); 1890 if (!wallpaper.cropExists()) { 1891 generateCrop(wallpaper); 1892 } 1893 } 1894 boolean success = false; 1895 try { 1896 stream = new FileInputStream(file); 1897 XmlPullParser parser = Xml.newPullParser(); 1898 parser.setInput(stream, StandardCharsets.UTF_8.name()); 1899 1900 int type; 1901 do { 1902 type = parser.next(); 1903 if (type == XmlPullParser.START_TAG) { 1904 String tag = parser.getName(); 1905 if ("wp".equals(tag)) { 1906 // Common to system + lock wallpapers 1907 parseWallpaperAttributes(parser, wallpaper, keepDimensionHints); 1908 1909 // A system wallpaper might also be a live wallpaper 1910 String comp = parser.getAttributeValue(null, "component"); 1911 wallpaper.nextWallpaperComponent = comp != null 1912 ? ComponentName.unflattenFromString(comp) 1913 : null; 1914 if (wallpaper.nextWallpaperComponent == null 1915 || "android".equals(wallpaper.nextWallpaperComponent 1916 .getPackageName())) { 1917 wallpaper.nextWallpaperComponent = mImageWallpaper; 1918 } 1919 1920 if (DEBUG) { 1921 Slog.v(TAG, "mWidth:" + wallpaper.width); 1922 Slog.v(TAG, "mHeight:" + wallpaper.height); 1923 Slog.v(TAG, "cropRect:" + wallpaper.cropHint); 1924 Slog.v(TAG, "mName:" + wallpaper.name); 1925 Slog.v(TAG, "mNextWallpaperComponent:" 1926 + wallpaper.nextWallpaperComponent); 1927 } 1928 } else if ("kwp".equals(tag)) { 1929 // keyguard-specific wallpaper for this user 1930 WallpaperData lockWallpaper = mLockWallpaperMap.get(userId); 1931 if (lockWallpaper == null) { 1932 lockWallpaper = new WallpaperData(userId, 1933 WALLPAPER_LOCK_ORIG, WALLPAPER_LOCK_CROP); 1934 mLockWallpaperMap.put(userId, lockWallpaper); 1935 } 1936 parseWallpaperAttributes(parser, lockWallpaper, false); 1937 } 1938 } 1939 } while (type != XmlPullParser.END_DOCUMENT); 1940 success = true; 1941 } catch (FileNotFoundException e) { 1942 Slog.w(TAG, "no current wallpaper -- first boot?"); 1943 } catch (NullPointerException e) { 1944 Slog.w(TAG, "failed parsing " + file + " " + e); 1945 } catch (NumberFormatException e) { 1946 Slog.w(TAG, "failed parsing " + file + " " + e); 1947 } catch (XmlPullParserException e) { 1948 Slog.w(TAG, "failed parsing " + file + " " + e); 1949 } catch (IOException e) { 1950 Slog.w(TAG, "failed parsing " + file + " " + e); 1951 } catch (IndexOutOfBoundsException e) { 1952 Slog.w(TAG, "failed parsing " + file + " " + e); 1953 } 1954 IoUtils.closeQuietly(stream); 1955 1956 if (!success) { 1957 wallpaper.width = -1; 1958 wallpaper.height = -1; 1959 wallpaper.cropHint.set(0, 0, 0, 0); 1960 wallpaper.padding.set(0, 0, 0, 0); 1961 wallpaper.name = ""; 1962 1963 mLockWallpaperMap.remove(userId); 1964 } else { 1965 if (wallpaper.wallpaperId <= 0) { 1966 wallpaper.wallpaperId = makeWallpaperIdLocked(); 1967 if (DEBUG) { 1968 Slog.w(TAG, "Didn't set wallpaper id in loadSettingsLocked(" + userId 1969 + "); now " + wallpaper.wallpaperId); 1970 } 1971 } 1972 } 1973 1974 ensureSaneWallpaperData(wallpaper); 1975 WallpaperData lockWallpaper = mLockWallpaperMap.get(userId); 1976 if (lockWallpaper != null) { 1977 ensureSaneWallpaperData(lockWallpaper); 1978 } 1979 } 1980 1981 private void ensureSaneWallpaperData(WallpaperData wallpaper) { 1982 // We always want to have some reasonable width hint. 1983 int baseSize = getMaximumSizeDimension(); 1984 if (wallpaper.width < baseSize) { 1985 wallpaper.width = baseSize; 1986 } 1987 if (wallpaper.height < baseSize) { 1988 wallpaper.height = baseSize; 1989 } 1990 // and crop, if not previously specified 1991 if (wallpaper.cropHint.width() <= 0 1992 || wallpaper.cropHint.height() <= 0) { 1993 wallpaper.cropHint.set(0, 0, wallpaper.width, wallpaper.height); 1994 } 1995 } 1996 1997 private void parseWallpaperAttributes(XmlPullParser parser, WallpaperData wallpaper, 1998 boolean keepDimensionHints) { 1999 final String idString = parser.getAttributeValue(null, "id"); 2000 if (idString != null) { 2001 final int id = wallpaper.wallpaperId = Integer.parseInt(idString); 2002 if (id > mWallpaperId) { 2003 mWallpaperId = id; 2004 } 2005 } else { 2006 wallpaper.wallpaperId = makeWallpaperIdLocked(); 2007 } 2008 2009 if (!keepDimensionHints) { 2010 wallpaper.width = Integer.parseInt(parser.getAttributeValue(null, "width")); 2011 wallpaper.height = Integer.parseInt(parser 2012 .getAttributeValue(null, "height")); 2013 } 2014 wallpaper.cropHint.left = getAttributeInt(parser, "cropLeft", 0); 2015 wallpaper.cropHint.top = getAttributeInt(parser, "cropTop", 0); 2016 wallpaper.cropHint.right = getAttributeInt(parser, "cropRight", 0); 2017 wallpaper.cropHint.bottom = getAttributeInt(parser, "cropBottom", 0); 2018 wallpaper.padding.left = getAttributeInt(parser, "paddingLeft", 0); 2019 wallpaper.padding.top = getAttributeInt(parser, "paddingTop", 0); 2020 wallpaper.padding.right = getAttributeInt(parser, "paddingRight", 0); 2021 wallpaper.padding.bottom = getAttributeInt(parser, "paddingBottom", 0); 2022 wallpaper.name = parser.getAttributeValue(null, "name"); 2023 wallpaper.allowBackup = "true".equals(parser.getAttributeValue(null, "backup")); 2024 } 2025 2026 private int getMaximumSizeDimension() { 2027 WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE); 2028 Display d = wm.getDefaultDisplay(); 2029 return d.getMaximumSizeDimension(); 2030 } 2031 2032 // Called by SystemBackupAgent after files are restored to disk. 2033 public void settingsRestored() { 2034 // Verify caller is the system 2035 if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) { 2036 throw new RuntimeException("settingsRestored() can only be called from the system process"); 2037 } 2038 // TODO: If necessary, make it work for secondary users as well. This currently assumes 2039 // restores only to the primary user 2040 if (DEBUG) Slog.v(TAG, "settingsRestored"); 2041 WallpaperData wallpaper = null; 2042 boolean success = false; 2043 synchronized (mLock) { 2044 loadSettingsLocked(UserHandle.USER_SYSTEM, false); 2045 wallpaper = mWallpaperMap.get(UserHandle.USER_SYSTEM); 2046 wallpaper.wallpaperId = makeWallpaperIdLocked(); // always bump id at restore 2047 wallpaper.allowBackup = true; // by definition if it was restored 2048 if (wallpaper.nextWallpaperComponent != null 2049 && !wallpaper.nextWallpaperComponent.equals(mImageWallpaper)) { 2050 if (!bindWallpaperComponentLocked(wallpaper.nextWallpaperComponent, false, false, 2051 wallpaper, null)) { 2052 // No such live wallpaper or other failure; fall back to the default 2053 // live wallpaper (since the profile being restored indicated that the 2054 // user had selected a live rather than static one). 2055 bindWallpaperComponentLocked(null, false, false, wallpaper, null); 2056 } 2057 success = true; 2058 } else { 2059 // If there's a wallpaper name, we use that. If that can't be loaded, then we 2060 // use the default. 2061 if ("".equals(wallpaper.name)) { 2062 if (DEBUG) Slog.v(TAG, "settingsRestored: name is empty"); 2063 success = true; 2064 } else { 2065 if (DEBUG) Slog.v(TAG, "settingsRestored: attempting to restore named resource"); 2066 success = restoreNamedResourceLocked(wallpaper); 2067 } 2068 if (DEBUG) Slog.v(TAG, "settingsRestored: success=" + success 2069 + " id=" + wallpaper.wallpaperId); 2070 if (success) { 2071 generateCrop(wallpaper); // based on the new image + metadata 2072 bindWallpaperComponentLocked(wallpaper.nextWallpaperComponent, true, false, 2073 wallpaper, null); 2074 } 2075 } 2076 } 2077 2078 if (!success) { 2079 Slog.e(TAG, "Failed to restore wallpaper: '" + wallpaper.name + "'"); 2080 wallpaper.name = ""; 2081 getWallpaperDir(UserHandle.USER_SYSTEM).delete(); 2082 } 2083 2084 synchronized (mLock) { 2085 saveSettingsLocked(UserHandle.USER_SYSTEM); 2086 } 2087 } 2088 2089 // Restore the named resource bitmap to both source + crop files 2090 boolean restoreNamedResourceLocked(WallpaperData wallpaper) { 2091 if (wallpaper.name.length() > 4 && "res:".equals(wallpaper.name.substring(0, 4))) { 2092 String resName = wallpaper.name.substring(4); 2093 2094 String pkg = null; 2095 int colon = resName.indexOf(':'); 2096 if (colon > 0) { 2097 pkg = resName.substring(0, colon); 2098 } 2099 2100 String ident = null; 2101 int slash = resName.lastIndexOf('/'); 2102 if (slash > 0) { 2103 ident = resName.substring(slash+1); 2104 } 2105 2106 String type = null; 2107 if (colon > 0 && slash > 0 && (slash-colon) > 1) { 2108 type = resName.substring(colon+1, slash); 2109 } 2110 2111 if (pkg != null && ident != null && type != null) { 2112 int resId = -1; 2113 InputStream res = null; 2114 FileOutputStream fos = null; 2115 FileOutputStream cos = null; 2116 try { 2117 Context c = mContext.createPackageContext(pkg, Context.CONTEXT_RESTRICTED); 2118 Resources r = c.getResources(); 2119 resId = r.getIdentifier(resName, null, null); 2120 if (resId == 0) { 2121 Slog.e(TAG, "couldn't resolve identifier pkg=" + pkg + " type=" + type 2122 + " ident=" + ident); 2123 return false; 2124 } 2125 2126 res = r.openRawResource(resId); 2127 if (wallpaper.wallpaperFile.exists()) { 2128 wallpaper.wallpaperFile.delete(); 2129 wallpaper.cropFile.delete(); 2130 } 2131 fos = new FileOutputStream(wallpaper.wallpaperFile); 2132 cos = new FileOutputStream(wallpaper.cropFile); 2133 2134 byte[] buffer = new byte[32768]; 2135 int amt; 2136 while ((amt=res.read(buffer)) > 0) { 2137 fos.write(buffer, 0, amt); 2138 cos.write(buffer, 0, amt); 2139 } 2140 // mWallpaperObserver will notice the close and send the change broadcast 2141 2142 Slog.v(TAG, "Restored wallpaper: " + resName); 2143 return true; 2144 } catch (NameNotFoundException e) { 2145 Slog.e(TAG, "Package name " + pkg + " not found"); 2146 } catch (Resources.NotFoundException e) { 2147 Slog.e(TAG, "Resource not found: " + resId); 2148 } catch (IOException e) { 2149 Slog.e(TAG, "IOException while restoring wallpaper ", e); 2150 } finally { 2151 IoUtils.closeQuietly(res); 2152 if (fos != null) { 2153 FileUtils.sync(fos); 2154 } 2155 if (cos != null) { 2156 FileUtils.sync(cos); 2157 } 2158 IoUtils.closeQuietly(fos); 2159 IoUtils.closeQuietly(cos); 2160 } 2161 } 2162 } 2163 return false; 2164 } 2165 2166 @Override 2167 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2168 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 2169 != PackageManager.PERMISSION_GRANTED) { 2170 2171 pw.println("Permission Denial: can't dump wallpaper service from from pid=" 2172 + Binder.getCallingPid() 2173 + ", uid=" + Binder.getCallingUid()); 2174 return; 2175 } 2176 2177 synchronized (mLock) { 2178 pw.println("System wallpaper state:"); 2179 for (int i = 0; i < mWallpaperMap.size(); i++) { 2180 WallpaperData wallpaper = mWallpaperMap.valueAt(i); 2181 pw.print(" User "); pw.print(wallpaper.userId); 2182 pw.print(": id="); pw.println(wallpaper.wallpaperId); 2183 pw.print(" mWidth="); 2184 pw.print(wallpaper.width); 2185 pw.print(" mHeight="); 2186 pw.println(wallpaper.height); 2187 pw.print(" mCropHint="); pw.println(wallpaper.cropHint); 2188 pw.print(" mPadding="); pw.println(wallpaper.padding); 2189 pw.print(" mName="); pw.println(wallpaper.name); 2190 pw.print(" mWallpaperComponent="); pw.println(wallpaper.wallpaperComponent); 2191 if (wallpaper.connection != null) { 2192 WallpaperConnection conn = wallpaper.connection; 2193 pw.print(" Wallpaper connection "); 2194 pw.print(conn); 2195 pw.println(":"); 2196 if (conn.mInfo != null) { 2197 pw.print(" mInfo.component="); 2198 pw.println(conn.mInfo.getComponent()); 2199 } 2200 pw.print(" mToken="); 2201 pw.println(conn.mToken); 2202 pw.print(" mService="); 2203 pw.println(conn.mService); 2204 pw.print(" mEngine="); 2205 pw.println(conn.mEngine); 2206 pw.print(" mLastDiedTime="); 2207 pw.println(wallpaper.lastDiedTime - SystemClock.uptimeMillis()); 2208 } 2209 } 2210 pw.println("Lock wallpaper state:"); 2211 for (int i = 0; i < mLockWallpaperMap.size(); i++) { 2212 WallpaperData wallpaper = mLockWallpaperMap.valueAt(i); 2213 pw.print(" User "); pw.print(wallpaper.userId); 2214 pw.print(": id="); pw.println(wallpaper.wallpaperId); 2215 pw.print(" mWidth="); pw.print(wallpaper.width); 2216 pw.print(" mHeight="); pw.println(wallpaper.height); 2217 pw.print(" mCropHint="); pw.println(wallpaper.cropHint); 2218 pw.print(" mPadding="); pw.println(wallpaper.padding); 2219 pw.print(" mName="); pw.println(wallpaper.name); 2220 } 2221 2222 } 2223 } 2224 } 2225
