WallpaperManagerService.java revision c3f915e4824d24b653098ac4410e488e2f646ed9
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.wallpaper; 18 19import static android.app.WallpaperManager.FLAG_LOCK; 20import static android.app.WallpaperManager.FLAG_SYSTEM; 21import static android.os.ParcelFileDescriptor.MODE_CREATE; 22import static android.os.ParcelFileDescriptor.MODE_READ_ONLY; 23import static android.os.ParcelFileDescriptor.MODE_READ_WRITE; 24import static android.os.ParcelFileDescriptor.MODE_TRUNCATE; 25 26import android.app.ActivityManager; 27import android.app.ActivityManagerNative; 28import android.app.AppGlobals; 29import android.app.AppOpsManager; 30import android.app.IUserSwitchObserver; 31import android.app.IWallpaperManager; 32import android.app.IWallpaperManagerCallback; 33import android.app.PendingIntent; 34import android.app.WallpaperInfo; 35import android.app.WallpaperManager; 36import android.app.admin.DevicePolicyManager; 37import android.app.backup.WallpaperBackupHelper; 38import android.content.BroadcastReceiver; 39import android.content.ComponentName; 40import android.content.Context; 41import android.content.Intent; 42import android.content.IntentFilter; 43import android.content.ServiceConnection; 44import android.content.pm.IPackageManager; 45import android.content.pm.PackageManager; 46import android.content.pm.PackageManager.NameNotFoundException; 47import android.content.pm.ResolveInfo; 48import android.content.pm.ServiceInfo; 49import android.content.pm.UserInfo; 50import android.content.res.Resources; 51import android.graphics.Bitmap; 52import android.graphics.BitmapFactory; 53import android.graphics.BitmapRegionDecoder; 54import android.graphics.Point; 55import android.graphics.Rect; 56import android.os.Binder; 57import android.os.Bundle; 58import android.os.Environment; 59import android.os.FileObserver; 60import android.os.FileUtils; 61import android.os.IBinder; 62import android.os.IRemoteCallback; 63import android.os.Process; 64import android.os.ParcelFileDescriptor; 65import android.os.RemoteCallbackList; 66import android.os.RemoteException; 67import android.os.SELinux; 68import android.os.ServiceManager; 69import android.os.SystemClock; 70import android.os.UserHandle; 71import android.os.UserManager; 72import android.service.wallpaper.IWallpaperConnection; 73import android.service.wallpaper.IWallpaperEngine; 74import android.service.wallpaper.IWallpaperService; 75import android.service.wallpaper.WallpaperService; 76import android.system.ErrnoException; 77import android.system.Os; 78import android.util.EventLog; 79import android.util.Slog; 80import android.util.SparseArray; 81import android.util.Xml; 82import android.view.Display; 83import android.view.IWindowManager; 84import android.view.WindowManager; 85 86import com.android.internal.R; 87import com.android.internal.content.PackageMonitor; 88import com.android.internal.os.BackgroundThread; 89import com.android.internal.util.FastXmlSerializer; 90import com.android.internal.util.JournaledFile; 91import com.android.server.EventLogTags; 92import com.android.server.FgThread; 93import com.android.server.SystemService; 94 95import libcore.io.IoUtils; 96 97import org.xmlpull.v1.XmlPullParser; 98import org.xmlpull.v1.XmlPullParserException; 99import org.xmlpull.v1.XmlSerializer; 100 101import java.io.BufferedOutputStream; 102import java.io.File; 103import java.io.FileDescriptor; 104import java.io.FileInputStream; 105import java.io.FileNotFoundException; 106import java.io.FileOutputStream; 107import java.io.IOException; 108import java.io.InputStream; 109import java.io.PrintWriter; 110import java.nio.charset.StandardCharsets; 111import java.util.Arrays; 112import java.util.List; 113 114public class WallpaperManagerService extends IWallpaperManager.Stub { 115 static final String TAG = "WallpaperManagerService"; 116 static final boolean DEBUG = false; 117 118 public static class Lifecycle extends SystemService { 119 private WallpaperManagerService mService; 120 121 public Lifecycle(Context context) { 122 super(context); 123 } 124 125 @Override 126 public void onStart() { 127 mService = new WallpaperManagerService(getContext()); 128 publishBinderService(Context.WALLPAPER_SERVICE, mService); 129 } 130 131 @Override 132 public void onBootPhase(int phase) { 133 if (phase == SystemService.PHASE_ACTIVITY_MANAGER_READY) { 134 mService.systemReady(); 135 } else if (phase == SystemService.PHASE_THIRD_PARTY_APPS_CAN_START) { 136 mService.switchUser(UserHandle.USER_SYSTEM, null); 137 } 138 } 139 140 @Override 141 public void onUnlockUser(int userHandle) { 142 mService.onUnlockUser(userHandle); 143 } 144 } 145 146 final Object mLock = new Object(); 147 148 /** 149 * Minimum time between crashes of a wallpaper service for us to consider 150 * restarting it vs. just reverting to the static wallpaper. 151 */ 152 static final long MIN_WALLPAPER_CRASH_TIME = 10000; 153 static final int MAX_WALLPAPER_COMPONENT_LOG_LENGTH = 128; 154 static final String WALLPAPER = "wallpaper_orig"; 155 static final String WALLPAPER_CROP = "wallpaper"; 156 static final String WALLPAPER_LOCK_ORIG = "wallpaper_lock_orig"; 157 static final String WALLPAPER_LOCK_CROP = "wallpaper_lock"; 158 static final String WALLPAPER_INFO = "wallpaper_info.xml"; 159 160 // All the various per-user state files we need to be aware of 161 static final String[] sPerUserFiles = new String[] { 162 WALLPAPER, WALLPAPER_CROP, 163 WALLPAPER_LOCK_ORIG, WALLPAPER_LOCK_CROP, 164 WALLPAPER_INFO 165 }; 166 167 /** 168 * Observes the wallpaper for changes and notifies all IWallpaperServiceCallbacks 169 * that the wallpaper has changed. The CREATE is triggered when there is no 170 * wallpaper set and is created for the first time. The CLOSE_WRITE is triggered 171 * every time the wallpaper is changed. 172 */ 173 private class WallpaperObserver extends FileObserver { 174 175 final int mUserId; 176 final WallpaperData mWallpaper; 177 final File mWallpaperDir; 178 final File mWallpaperFile; 179 final File mWallpaperLockFile; 180 181 public WallpaperObserver(WallpaperData wallpaper) { 182 super(getWallpaperDir(wallpaper.userId).getAbsolutePath(), 183 CLOSE_WRITE | MOVED_TO | DELETE | DELETE_SELF); 184 mUserId = wallpaper.userId; 185 mWallpaperDir = getWallpaperDir(wallpaper.userId); 186 mWallpaper = wallpaper; 187 mWallpaperFile = new File(mWallpaperDir, WALLPAPER); 188 mWallpaperLockFile = new File(mWallpaperDir, WALLPAPER_LOCK_ORIG); 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 SELinux.restorecon(changedFile); 257 if (moved) { 258 // This is a restore, so generate the crop using any just-restored new 259 // crop guidelines, making sure to preserve our local dimension hints. 260 // We also make sure to reapply the correct SELinux label. 261 if (DEBUG) { 262 Slog.v(TAG, "moved-to, therefore restore; reloading metadata"); 263 } 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 // If the crop hint was larger than the image we just overshot. Patch things up. 357 if (cropHint.left < 0) { 358 cropHint.left = 0; 359 } 360 if (cropHint.top < 0) { 361 cropHint.top = 0; 362 } 363 364 // Don't bother cropping if what we're left with is identity 365 needCrop = (options.outHeight > cropHint.height() 366 || options.outWidth > cropHint.width()); 367 } 368 369 // scale if the crop height winds up not matching the recommended metrics 370 needScale = (wallpaper.height != cropHint.height()); 371 372 if (DEBUG) { 373 Slog.v(TAG, "crop: w=" + cropHint.width() + " h=" + cropHint.height()); 374 Slog.v(TAG, "dims: w=" + wallpaper.width + " h=" + wallpaper.height); 375 Slog.v(TAG, "meas: w=" + options.outWidth + " h=" + options.outHeight); 376 Slog.v(TAG, "crop?=" + needCrop + " scale?=" + needScale); 377 } 378 379 if (!needCrop && !needScale) { 380 // Simple case: the nominal crop fits what we want, so we take 381 // the whole thing and just copy the image file directly. 382 if (DEBUG) { 383 Slog.v(TAG, "Null crop of new wallpaper; copying"); 384 } 385 success = FileUtils.copyFile(wallpaper.wallpaperFile, wallpaper.cropFile); 386 if (!success) { 387 wallpaper.cropFile.delete(); 388 // TODO: fall back to default wallpaper in this case 389 } 390 } else { 391 // Fancy case: crop and scale. First, we decode and scale down if appropriate. 392 FileOutputStream f = null; 393 BufferedOutputStream bos = null; 394 try { 395 BitmapRegionDecoder decoder = BitmapRegionDecoder.newInstance( 396 wallpaper.wallpaperFile.getAbsolutePath(), false); 397 398 // This actually downsamples only by powers of two, but that's okay; we do 399 // a proper scaling blit later. This is to minimize transient RAM use. 400 // We calculate the largest power-of-two under the actual ratio rather than 401 // just let the decode take care of it because we also want to remap where the 402 // cropHint rectangle lies in the decoded [super]rect. 403 final BitmapFactory.Options scaler; 404 final int actualScale = cropHint.height() / wallpaper.height; 405 int scale = 1; 406 while (2*scale < actualScale) { 407 scale *= 2; 408 } 409 if (scale > 1) { 410 scaler = new BitmapFactory.Options(); 411 scaler.inSampleSize = scale; 412 if (DEBUG) { 413 Slog.v(TAG, "Downsampling cropped rect with scale " + scale); 414 } 415 } else { 416 scaler = null; 417 } 418 Bitmap cropped = decoder.decodeRegion(cropHint, scaler); 419 decoder.recycle(); 420 421 if (cropped == null) { 422 Slog.e(TAG, "Could not decode new wallpaper"); 423 } else { 424 // We've got the extracted crop; now we want to scale it properly to 425 // the desired rectangle. That's a height-biased operation: make it 426 // fit the hinted height, and accept whatever width we end up with. 427 cropHint.offsetTo(0, 0); 428 cropHint.right /= scale; // adjust by downsampling factor 429 cropHint.bottom /= scale; 430 final float heightR = ((float)wallpaper.height) / ((float)cropHint.height()); 431 if (DEBUG) { 432 Slog.v(TAG, "scale " + heightR + ", extracting " + cropHint); 433 } 434 final int destWidth = (int)(cropHint.width() * heightR); 435 final Bitmap finalCrop = Bitmap.createScaledBitmap(cropped, 436 destWidth, wallpaper.height, true); 437 if (DEBUG) { 438 Slog.v(TAG, "Final extract:"); 439 Slog.v(TAG, " dims: w=" + wallpaper.width 440 + " h=" + wallpaper.height); 441 Slog.v(TAG, " out: w=" + finalCrop.getWidth() 442 + " h=" + finalCrop.getHeight()); 443 } 444 445 f = new FileOutputStream(wallpaper.cropFile); 446 bos = new BufferedOutputStream(f, 32*1024); 447 finalCrop.compress(Bitmap.CompressFormat.JPEG, 100, bos); 448 bos.flush(); // don't rely on the implicit flush-at-close when noting success 449 success = true; 450 } 451 } catch (Exception e) { 452 if (DEBUG) { 453 Slog.e(TAG, "Error decoding crop", e); 454 } 455 } finally { 456 IoUtils.closeQuietly(bos); 457 IoUtils.closeQuietly(f); 458 } 459 } 460 } 461 462 if (!success) { 463 Slog.e(TAG, "Unable to apply new wallpaper"); 464 wallpaper.cropFile.delete(); 465 } 466 467 if (wallpaper.cropFile.exists()) { 468 boolean didRestorecon = SELinux.restorecon(wallpaper.cropFile.getAbsoluteFile()); 469 if (DEBUG) { 470 Slog.v(TAG, "restorecon() of crop file returned " + didRestorecon); 471 } 472 } 473 } 474 475 final Context mContext; 476 final IWindowManager mIWindowManager; 477 final IPackageManager mIPackageManager; 478 final MyPackageMonitor mMonitor; 479 final AppOpsManager mAppOpsManager; 480 WallpaperData mLastWallpaper; 481 IWallpaperManagerCallback mKeyguardListener; 482 boolean mWaitingForUnlock; 483 484 /** 485 * ID of the current wallpaper, changed every time anything sets a wallpaper. 486 * This is used for external detection of wallpaper update activity. 487 */ 488 int mWallpaperId; 489 490 /** 491 * Name of the component used to display bitmap wallpapers from either the gallery or 492 * built-in wallpapers. 493 */ 494 final ComponentName mImageWallpaper; 495 496 final SparseArray<WallpaperData> mWallpaperMap = new SparseArray<WallpaperData>(); 497 final SparseArray<WallpaperData> mLockWallpaperMap = new SparseArray<WallpaperData>(); 498 499 final SparseArray<Boolean> mUserRestorecon = new SparseArray<Boolean>(); 500 int mCurrentUserId; 501 502 static class WallpaperData { 503 504 int userId; 505 506 final File wallpaperFile; // source image 507 final File cropFile; // eventual destination 508 509 /** 510 * True while the client is writing a new wallpaper 511 */ 512 boolean imageWallpaperPending; 513 514 /** 515 * Which new wallpapers are being written; mirrors the 'which' 516 * selector bit field to setWallpaper(). 517 */ 518 int whichPending; 519 520 /** 521 * Callback once the set + crop is finished 522 */ 523 IWallpaperManagerCallback setComplete; 524 525 /** 526 * Is the OS allowed to back up this wallpaper imagery? 527 */ 528 boolean allowBackup; 529 530 /** 531 * Resource name if using a picture from the wallpaper gallery 532 */ 533 String name = ""; 534 535 /** 536 * The component name of the currently set live wallpaper. 537 */ 538 ComponentName wallpaperComponent; 539 540 /** 541 * The component name of the wallpaper that should be set next. 542 */ 543 ComponentName nextWallpaperComponent; 544 545 /** 546 * The ID of this wallpaper 547 */ 548 int wallpaperId; 549 550 WallpaperConnection connection; 551 long lastDiedTime; 552 boolean wallpaperUpdating; 553 WallpaperObserver wallpaperObserver; 554 555 /** 556 * List of callbacks registered they should each be notified when the wallpaper is changed. 557 */ 558 private RemoteCallbackList<IWallpaperManagerCallback> callbacks 559 = new RemoteCallbackList<IWallpaperManagerCallback>(); 560 561 int width = -1; 562 int height = -1; 563 564 /** 565 * The crop hint supplied for displaying a subset of the source image 566 */ 567 final Rect cropHint = new Rect(0, 0, 0, 0); 568 569 final Rect padding = new Rect(0, 0, 0, 0); 570 571 WallpaperData(int userId, String inputFileName, String cropFileName) { 572 this.userId = userId; 573 final File wallpaperDir = getWallpaperDir(userId); 574 wallpaperFile = new File(wallpaperDir, inputFileName); 575 cropFile = new File(wallpaperDir, cropFileName); 576 } 577 578 // Called during initialization of a given user's wallpaper bookkeeping 579 boolean cropExists() { 580 return cropFile.exists(); 581 } 582 } 583 584 int makeWallpaperIdLocked() { 585 do { 586 ++mWallpaperId; 587 } while (mWallpaperId == 0); 588 return mWallpaperId; 589 } 590 591 class WallpaperConnection extends IWallpaperConnection.Stub 592 implements ServiceConnection { 593 594 /** Time in milliseconds until we expect the wallpaper to reconnect (unless we're in the 595 * middle of an update). If exceeded, the wallpaper gets reset to the system default. */ 596 private static final long WALLPAPER_RECONNECT_TIMEOUT_MS = 5000; 597 598 final WallpaperInfo mInfo; 599 final Binder mToken = new Binder(); 600 IWallpaperService mService; 601 IWallpaperEngine mEngine; 602 WallpaperData mWallpaper; 603 IRemoteCallback mReply; 604 605 boolean mDimensionsChanged = false; 606 boolean mPaddingChanged = false; 607 608 private Runnable mResetRunnable = () -> { 609 synchronized (mLock) { 610 if (!mWallpaper.wallpaperUpdating 611 && mWallpaper.userId == mCurrentUserId) { 612 Slog.w(TAG, "Wallpaper reconnect timed out, " 613 + "reverting to built-in wallpaper!"); 614 clearWallpaperLocked(true, FLAG_SYSTEM, mWallpaper.userId, 615 null); 616 } 617 } 618 }; 619 620 public WallpaperConnection(WallpaperInfo info, WallpaperData wallpaper) { 621 mInfo = info; 622 mWallpaper = wallpaper; 623 } 624 625 @Override 626 public void onServiceConnected(ComponentName name, IBinder service) { 627 synchronized (mLock) { 628 if (mWallpaper.connection == this) { 629 mService = IWallpaperService.Stub.asInterface(service); 630 attachServiceLocked(this, mWallpaper); 631 // XXX should probably do saveSettingsLocked() later 632 // when we have an engine, but I'm not sure about 633 // locking there and anyway we always need to be able to 634 // recover if there is something wrong. 635 saveSettingsLocked(mWallpaper.userId); 636 FgThread.getHandler().removeCallbacks(mResetRunnable); 637 } 638 } 639 } 640 641 @Override 642 public void onServiceDisconnected(ComponentName name) { 643 synchronized (mLock) { 644 mService = null; 645 mEngine = null; 646 if (mWallpaper.connection == this) { 647 Slog.w(TAG, "Wallpaper service gone: " + mWallpaper.wallpaperComponent); 648 if (!mWallpaper.wallpaperUpdating 649 && mWallpaper.userId == mCurrentUserId) { 650 // There is a race condition which causes 651 // {@link #mWallpaper.wallpaperUpdating} to be false even if it is 652 // currently updating since the broadcast notifying us is async. 653 // This race is overcome by the general rule that we only reset the 654 // wallpaper if its service was shut down twice 655 // during {@link #MIN_WALLPAPER_CRASH_TIME} millis. 656 if (mWallpaper.lastDiedTime != 0 657 && mWallpaper.lastDiedTime + MIN_WALLPAPER_CRASH_TIME 658 > SystemClock.uptimeMillis()) { 659 Slog.w(TAG, "Reverting to built-in wallpaper!"); 660 clearWallpaperLocked(true, FLAG_SYSTEM, mWallpaper.userId, null); 661 } else { 662 mWallpaper.lastDiedTime = SystemClock.uptimeMillis(); 663 664 // If we didn't reset it right away, do so after we couldn't connect to 665 // it for an extended amount of time to avoid having a black wallpaper. 666 FgThread.getHandler().removeCallbacks(mResetRunnable); 667 FgThread.getHandler().postDelayed(mResetRunnable, 668 WALLPAPER_RECONNECT_TIMEOUT_MS); 669 } 670 final String flattened = name.flattenToString(); 671 EventLog.writeEvent(EventLogTags.WP_WALLPAPER_CRASHED, 672 flattened.substring(0, Math.min(flattened.length(), 673 MAX_WALLPAPER_COMPONENT_LOG_LENGTH))); 674 } 675 } 676 } 677 } 678 679 @Override 680 public void attachEngine(IWallpaperEngine engine) { 681 synchronized (mLock) { 682 mEngine = engine; 683 if (mDimensionsChanged) { 684 try { 685 mEngine.setDesiredSize(mWallpaper.width, mWallpaper.height); 686 } catch (RemoteException e) { 687 Slog.w(TAG, "Failed to set wallpaper dimensions", e); 688 } 689 mDimensionsChanged = false; 690 } 691 if (mPaddingChanged) { 692 try { 693 mEngine.setDisplayPadding(mWallpaper.padding); 694 } catch (RemoteException e) { 695 Slog.w(TAG, "Failed to set wallpaper padding", e); 696 } 697 mPaddingChanged = false; 698 } 699 } 700 } 701 702 @Override 703 public void engineShown(IWallpaperEngine engine) { 704 synchronized (mLock) { 705 if (mReply != null) { 706 long ident = Binder.clearCallingIdentity(); 707 try { 708 mReply.sendResult(null); 709 } catch (RemoteException e) { 710 Binder.restoreCallingIdentity(ident); 711 } 712 mReply = null; 713 } 714 } 715 } 716 717 @Override 718 public ParcelFileDescriptor setWallpaper(String name) { 719 synchronized (mLock) { 720 if (mWallpaper.connection == this) { 721 return updateWallpaperBitmapLocked(name, mWallpaper, null); 722 } 723 return null; 724 } 725 } 726 } 727 728 class MyPackageMonitor extends PackageMonitor { 729 @Override 730 public void onPackageUpdateFinished(String packageName, int uid) { 731 synchronized (mLock) { 732 if (mCurrentUserId != getChangingUserId()) { 733 return; 734 } 735 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 736 if (wallpaper != null) { 737 if (wallpaper.wallpaperComponent != null 738 && wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 739 wallpaper.wallpaperUpdating = false; 740 ComponentName comp = wallpaper.wallpaperComponent; 741 clearWallpaperComponentLocked(wallpaper); 742 if (!bindWallpaperComponentLocked(comp, false, false, 743 wallpaper, null)) { 744 Slog.w(TAG, "Wallpaper no longer available; reverting to default"); 745 clearWallpaperLocked(false, FLAG_SYSTEM, wallpaper.userId, null); 746 } 747 } 748 } 749 } 750 } 751 752 @Override 753 public void onPackageModified(String packageName) { 754 synchronized (mLock) { 755 if (mCurrentUserId != getChangingUserId()) { 756 return; 757 } 758 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 759 if (wallpaper != null) { 760 if (wallpaper.wallpaperComponent == null 761 || !wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 762 return; 763 } 764 doPackagesChangedLocked(true, wallpaper); 765 } 766 } 767 } 768 769 @Override 770 public void onPackageUpdateStarted(String packageName, int uid) { 771 synchronized (mLock) { 772 if (mCurrentUserId != getChangingUserId()) { 773 return; 774 } 775 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 776 if (wallpaper != null) { 777 if (wallpaper.wallpaperComponent != null 778 && wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 779 wallpaper.wallpaperUpdating = true; 780 if (wallpaper.connection != null) { 781 FgThread.getHandler().removeCallbacks( 782 wallpaper.connection.mResetRunnable); 783 } 784 } 785 } 786 } 787 } 788 789 @Override 790 public boolean onHandleForceStop(Intent intent, String[] packages, int uid, boolean doit) { 791 synchronized (mLock) { 792 boolean changed = false; 793 if (mCurrentUserId != getChangingUserId()) { 794 return false; 795 } 796 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 797 if (wallpaper != null) { 798 boolean res = doPackagesChangedLocked(doit, wallpaper); 799 changed |= res; 800 } 801 return changed; 802 } 803 } 804 805 @Override 806 public void onSomePackagesChanged() { 807 synchronized (mLock) { 808 if (mCurrentUserId != getChangingUserId()) { 809 return; 810 } 811 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 812 if (wallpaper != null) { 813 doPackagesChangedLocked(true, wallpaper); 814 } 815 } 816 } 817 818 boolean doPackagesChangedLocked(boolean doit, WallpaperData wallpaper) { 819 boolean changed = false; 820 if (wallpaper.wallpaperComponent != null) { 821 int change = isPackageDisappearing(wallpaper.wallpaperComponent 822 .getPackageName()); 823 if (change == PACKAGE_PERMANENT_CHANGE 824 || change == PACKAGE_TEMPORARY_CHANGE) { 825 changed = true; 826 if (doit) { 827 Slog.w(TAG, "Wallpaper uninstalled, removing: " 828 + wallpaper.wallpaperComponent); 829 clearWallpaperLocked(false, FLAG_SYSTEM, wallpaper.userId, null); 830 } 831 } 832 } 833 if (wallpaper.nextWallpaperComponent != null) { 834 int change = isPackageDisappearing(wallpaper.nextWallpaperComponent 835 .getPackageName()); 836 if (change == PACKAGE_PERMANENT_CHANGE 837 || change == PACKAGE_TEMPORARY_CHANGE) { 838 wallpaper.nextWallpaperComponent = null; 839 } 840 } 841 if (wallpaper.wallpaperComponent != null 842 && isPackageModified(wallpaper.wallpaperComponent.getPackageName())) { 843 try { 844 mContext.getPackageManager().getServiceInfo(wallpaper.wallpaperComponent, 845 PackageManager.MATCH_DIRECT_BOOT_AWARE 846 | PackageManager.MATCH_DIRECT_BOOT_UNAWARE); 847 } catch (NameNotFoundException e) { 848 Slog.w(TAG, "Wallpaper component gone, removing: " 849 + wallpaper.wallpaperComponent); 850 clearWallpaperLocked(false, FLAG_SYSTEM, wallpaper.userId, null); 851 } 852 } 853 if (wallpaper.nextWallpaperComponent != null 854 && isPackageModified(wallpaper.nextWallpaperComponent.getPackageName())) { 855 try { 856 mContext.getPackageManager().getServiceInfo(wallpaper.nextWallpaperComponent, 857 PackageManager.MATCH_DIRECT_BOOT_AWARE 858 | PackageManager.MATCH_DIRECT_BOOT_UNAWARE); 859 } catch (NameNotFoundException e) { 860 wallpaper.nextWallpaperComponent = null; 861 } 862 } 863 return changed; 864 } 865 } 866 867 public WallpaperManagerService(Context context) { 868 if (DEBUG) Slog.v(TAG, "WallpaperService startup"); 869 mContext = context; 870 mImageWallpaper = ComponentName.unflattenFromString( 871 context.getResources().getString(R.string.image_wallpaper_component)); 872 mIWindowManager = IWindowManager.Stub.asInterface( 873 ServiceManager.getService(Context.WINDOW_SERVICE)); 874 mIPackageManager = AppGlobals.getPackageManager(); 875 mAppOpsManager = (AppOpsManager) mContext.getSystemService(Context.APP_OPS_SERVICE); 876 mMonitor = new MyPackageMonitor(); 877 mMonitor.register(context, null, UserHandle.ALL, true); 878 getWallpaperDir(UserHandle.USER_SYSTEM).mkdirs(); 879 loadSettingsLocked(UserHandle.USER_SYSTEM, false); 880 } 881 882 private static File getWallpaperDir(int userId) { 883 return Environment.getUserSystemDirectory(userId); 884 } 885 886 @Override 887 protected void finalize() throws Throwable { 888 super.finalize(); 889 for (int i = 0; i < mWallpaperMap.size(); i++) { 890 WallpaperData wallpaper = mWallpaperMap.valueAt(i); 891 wallpaper.wallpaperObserver.stopWatching(); 892 } 893 } 894 895 void systemReady() { 896 if (DEBUG) Slog.v(TAG, "systemReady"); 897 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.USER_SYSTEM); 898 // If we think we're going to be using the system image wallpaper imagery, make 899 // sure we have something to render 900 if (mImageWallpaper.equals(wallpaper.nextWallpaperComponent)) { 901 // No crop file? Make sure we've finished the processing sequence if necessary 902 if (!wallpaper.cropExists()) { 903 if (DEBUG) { 904 Slog.i(TAG, "No crop; regenerating from source"); 905 } 906 generateCrop(wallpaper); 907 } 908 // Still nothing? Fall back to default. 909 if (!wallpaper.cropExists()) { 910 if (DEBUG) { 911 Slog.i(TAG, "Unable to regenerate crop; resetting"); 912 } 913 clearWallpaperLocked(false, FLAG_SYSTEM, UserHandle.USER_SYSTEM, null); 914 } 915 } else { 916 if (DEBUG) { 917 Slog.i(TAG, "Nondefault wallpaper component; gracefully ignoring"); 918 } 919 } 920 921 IntentFilter userFilter = new IntentFilter(); 922 userFilter.addAction(Intent.ACTION_USER_REMOVED); 923 mContext.registerReceiver(new BroadcastReceiver() { 924 @Override 925 public void onReceive(Context context, Intent intent) { 926 final String action = intent.getAction(); 927 if (Intent.ACTION_USER_REMOVED.equals(action)) { 928 onRemoveUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 929 UserHandle.USER_NULL)); 930 } 931 } 932 }, userFilter); 933 934 try { 935 ActivityManagerNative.getDefault().registerUserSwitchObserver( 936 new IUserSwitchObserver.Stub() { 937 @Override 938 public void onUserSwitching(int newUserId, IRemoteCallback reply) { 939 switchUser(newUserId, reply); 940 } 941 942 @Override 943 public void onUserSwitchComplete(int newUserId) throws RemoteException { 944 } 945 946 @Override 947 public void onForegroundProfileSwitch(int newProfileId) { 948 // Ignore. 949 } 950 }, TAG); 951 } catch (RemoteException e) { 952 e.rethrowAsRuntimeException(); 953 } 954 } 955 956 /** Called by SystemBackupAgent */ 957 public String getName() { 958 // Verify caller is the system 959 if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) { 960 throw new RuntimeException("getName() can only be called from the system process"); 961 } 962 synchronized (mLock) { 963 return mWallpaperMap.get(0).name; 964 } 965 } 966 967 void stopObserver(WallpaperData wallpaper) { 968 if (wallpaper != null) { 969 if (wallpaper.wallpaperObserver != null) { 970 wallpaper.wallpaperObserver.stopWatching(); 971 wallpaper.wallpaperObserver = null; 972 } 973 } 974 } 975 976 void stopObserversLocked(int userId) { 977 stopObserver(mWallpaperMap.get(userId)); 978 stopObserver(mLockWallpaperMap.get(userId)); 979 mWallpaperMap.remove(userId); 980 mLockWallpaperMap.remove(userId); 981 } 982 983 void onUnlockUser(final int userId) { 984 synchronized (mLock) { 985 if (mCurrentUserId == userId) { 986 if (mWaitingForUnlock) { 987 // If we're switching users, now is when we transition the wallpaper 988 switchUser(userId, null); 989 } 990 991 // Make sure that the SELinux labeling of all the relevant files is correct. 992 // This corrects for mislabeling bugs that might have arisen from move-to 993 // operations involving the wallpaper files. This isn't timing-critical, 994 // so we do it in the background to avoid holding up the user unlock operation. 995 if (mUserRestorecon.get(userId) != Boolean.TRUE) { 996 mUserRestorecon.put(userId, Boolean.TRUE); 997 Runnable relabeler = new Runnable() { 998 @Override 999 public void run() { 1000 final File wallpaperDir = getWallpaperDir(userId); 1001 for (String filename : sPerUserFiles) { 1002 File f = new File(wallpaperDir, filename); 1003 if (f.exists()) { 1004 SELinux.restorecon(f); 1005 } 1006 } 1007 } 1008 }; 1009 BackgroundThread.getHandler().post(relabeler); 1010 } 1011 } 1012 } 1013 } 1014 1015 void onRemoveUser(int userId) { 1016 if (userId < 1) return; 1017 1018 final File wallpaperDir = getWallpaperDir(userId); 1019 synchronized (mLock) { 1020 stopObserversLocked(userId); 1021 for (String filename : sPerUserFiles) { 1022 new File(wallpaperDir, filename).delete(); 1023 } 1024 } 1025 } 1026 1027 void switchUser(int userId, IRemoteCallback reply) { 1028 synchronized (mLock) { 1029 mCurrentUserId = userId; 1030 WallpaperData wallpaper = getWallpaperSafeLocked(userId, FLAG_SYSTEM); 1031 // Not started watching yet, in case wallpaper data was loaded for other reasons. 1032 if (wallpaper.wallpaperObserver == null) { 1033 wallpaper.wallpaperObserver = new WallpaperObserver(wallpaper); 1034 wallpaper.wallpaperObserver.startWatching(); 1035 } 1036 switchWallpaper(wallpaper, reply); 1037 } 1038 } 1039 1040 void switchWallpaper(WallpaperData wallpaper, IRemoteCallback reply) { 1041 synchronized (mLock) { 1042 mWaitingForUnlock = false; 1043 final ComponentName cname = wallpaper.wallpaperComponent != null ? 1044 wallpaper.wallpaperComponent : wallpaper.nextWallpaperComponent; 1045 if (!bindWallpaperComponentLocked(cname, true, false, wallpaper, reply)) { 1046 // We failed to bind the desired wallpaper, but that might 1047 // happen if the wallpaper isn't direct-boot aware 1048 ServiceInfo si = null; 1049 try { 1050 si = mIPackageManager.getServiceInfo(cname, 1051 PackageManager.MATCH_DIRECT_BOOT_UNAWARE, wallpaper.userId); 1052 } catch (RemoteException ignored) { 1053 } 1054 1055 if (si == null) { 1056 Slog.w(TAG, "Failure starting previous wallpaper; clearing"); 1057 clearWallpaperLocked(false, FLAG_SYSTEM, wallpaper.userId, reply); 1058 } else { 1059 Slog.w(TAG, "Wallpaper isn't direct boot aware; using fallback until unlocked"); 1060 // We might end up persisting the current wallpaper data 1061 // while locked, so pretend like the component was actually 1062 // bound into place 1063 wallpaper.wallpaperComponent = wallpaper.nextWallpaperComponent; 1064 final WallpaperData fallback = new WallpaperData(wallpaper.userId, 1065 WALLPAPER_LOCK_ORIG, WALLPAPER_LOCK_CROP); 1066 ensureSaneWallpaperData(fallback); 1067 bindWallpaperComponentLocked(mImageWallpaper, true, false, fallback, reply); 1068 mWaitingForUnlock = true; 1069 } 1070 } 1071 } 1072 } 1073 1074 @Override 1075 public void clearWallpaper(String callingPackage, int which, int userId) { 1076 if (DEBUG) Slog.v(TAG, "clearWallpaper"); 1077 checkPermission(android.Manifest.permission.SET_WALLPAPER); 1078 if (!isWallpaperSupported(callingPackage) || !isSetWallpaperAllowed(callingPackage)) { 1079 return; 1080 } 1081 userId = ActivityManager.handleIncomingUser(Binder.getCallingPid(), 1082 Binder.getCallingUid(), userId, false, true, "clearWallpaper", null); 1083 1084 synchronized (mLock) { 1085 clearWallpaperLocked(false, which, userId, null); 1086 } 1087 } 1088 1089 void clearWallpaperLocked(boolean defaultFailed, int which, int userId, IRemoteCallback reply) { 1090 if (which != FLAG_SYSTEM && which != FLAG_LOCK) { 1091 throw new IllegalArgumentException("Must specify exactly one kind of wallpaper to read"); 1092 } 1093 1094 WallpaperData wallpaper = null; 1095 if (which == FLAG_LOCK) { 1096 wallpaper = mLockWallpaperMap.get(userId); 1097 if (wallpaper == null) { 1098 // It's already gone; we're done. 1099 if (DEBUG) { 1100 Slog.i(TAG, "Lock wallpaper already cleared"); 1101 } 1102 return; 1103 } 1104 } else { 1105 wallpaper = mWallpaperMap.get(userId); 1106 if (wallpaper == null) { 1107 // Might need to bring it in the first time to establish our rewrite 1108 loadSettingsLocked(userId, false); 1109 wallpaper = mWallpaperMap.get(userId); 1110 } 1111 } 1112 if (wallpaper == null) { 1113 return; 1114 } 1115 1116 final long ident = Binder.clearCallingIdentity(); 1117 try { 1118 if (wallpaper.wallpaperFile.exists()) { 1119 wallpaper.wallpaperFile.delete(); 1120 wallpaper.cropFile.delete(); 1121 if (which == FLAG_LOCK) { 1122 mLockWallpaperMap.remove(userId); 1123 final IWallpaperManagerCallback cb = mKeyguardListener; 1124 if (cb != null) { 1125 if (DEBUG) { 1126 Slog.i(TAG, "Notifying keyguard of lock wallpaper clear"); 1127 } 1128 try { 1129 cb.onWallpaperChanged(); 1130 } catch (RemoteException e) { 1131 // Oh well it went away; no big deal 1132 } 1133 } 1134 saveSettingsLocked(userId); 1135 return; 1136 } 1137 } 1138 1139 RuntimeException e = null; 1140 try { 1141 wallpaper.imageWallpaperPending = false; 1142 if (userId != mCurrentUserId) return; 1143 if (bindWallpaperComponentLocked(defaultFailed 1144 ? mImageWallpaper 1145 : null, true, false, wallpaper, reply)) { 1146 return; 1147 } 1148 } catch (IllegalArgumentException e1) { 1149 e = e1; 1150 } 1151 1152 // This can happen if the default wallpaper component doesn't 1153 // exist. This should be a system configuration problem, but 1154 // let's not let it crash the system and just live with no 1155 // wallpaper. 1156 Slog.e(TAG, "Default wallpaper component not found!", e); 1157 clearWallpaperComponentLocked(wallpaper); 1158 if (reply != null) { 1159 try { 1160 reply.sendResult(null); 1161 } catch (RemoteException e1) { 1162 } 1163 } 1164 } finally { 1165 Binder.restoreCallingIdentity(ident); 1166 } 1167 } 1168 1169 public boolean hasNamedWallpaper(String name) { 1170 synchronized (mLock) { 1171 List<UserInfo> users; 1172 long ident = Binder.clearCallingIdentity(); 1173 try { 1174 users = ((UserManager) mContext.getSystemService(Context.USER_SERVICE)).getUsers(); 1175 } finally { 1176 Binder.restoreCallingIdentity(ident); 1177 } 1178 for (UserInfo user: users) { 1179 // ignore managed profiles 1180 if (user.isManagedProfile()) { 1181 continue; 1182 } 1183 WallpaperData wd = mWallpaperMap.get(user.id); 1184 if (wd == null) { 1185 // User hasn't started yet, so load her settings to peek at the wallpaper 1186 loadSettingsLocked(user.id, false); 1187 wd = mWallpaperMap.get(user.id); 1188 } 1189 if (wd != null && name.equals(wd.name)) { 1190 return true; 1191 } 1192 } 1193 } 1194 return false; 1195 } 1196 1197 private Point getDefaultDisplaySize() { 1198 Point p = new Point(); 1199 WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE); 1200 Display d = wm.getDefaultDisplay(); 1201 d.getRealSize(p); 1202 return p; 1203 } 1204 1205 public void setDimensionHints(int width, int height, String callingPackage) 1206 throws RemoteException { 1207 checkPermission(android.Manifest.permission.SET_WALLPAPER_HINTS); 1208 if (!isWallpaperSupported(callingPackage)) { 1209 return; 1210 } 1211 synchronized (mLock) { 1212 int userId = UserHandle.getCallingUserId(); 1213 WallpaperData wallpaper = getWallpaperSafeLocked(userId, FLAG_SYSTEM); 1214 if (width <= 0 || height <= 0) { 1215 throw new IllegalArgumentException("width and height must be > 0"); 1216 } 1217 // Make sure it is at least as large as the display. 1218 Point displaySize = getDefaultDisplaySize(); 1219 width = Math.max(width, displaySize.x); 1220 height = Math.max(height, displaySize.y); 1221 1222 if (width != wallpaper.width || height != wallpaper.height) { 1223 wallpaper.width = width; 1224 wallpaper.height = height; 1225 saveSettingsLocked(userId); 1226 if (mCurrentUserId != userId) return; // Don't change the properties now 1227 if (wallpaper.connection != null) { 1228 if (wallpaper.connection.mEngine != null) { 1229 try { 1230 wallpaper.connection.mEngine.setDesiredSize( 1231 width, height); 1232 } catch (RemoteException e) { 1233 } 1234 notifyCallbacksLocked(wallpaper); 1235 } else if (wallpaper.connection.mService != null) { 1236 // We've attached to the service but the engine hasn't attached back to us 1237 // yet. This means it will be created with the previous dimensions, so we 1238 // need to update it to the new dimensions once it attaches. 1239 wallpaper.connection.mDimensionsChanged = true; 1240 } 1241 } 1242 } 1243 } 1244 } 1245 1246 public int getWidthHint() throws RemoteException { 1247 synchronized (mLock) { 1248 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.getCallingUserId()); 1249 if (wallpaper != null) { 1250 return wallpaper.width; 1251 } else { 1252 return 0; 1253 } 1254 } 1255 } 1256 1257 public int getHeightHint() throws RemoteException { 1258 synchronized (mLock) { 1259 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.getCallingUserId()); 1260 if (wallpaper != null) { 1261 return wallpaper.height; 1262 } else { 1263 return 0; 1264 } 1265 } 1266 } 1267 1268 public void setDisplayPadding(Rect padding, String callingPackage) { 1269 checkPermission(android.Manifest.permission.SET_WALLPAPER_HINTS); 1270 if (!isWallpaperSupported(callingPackage)) { 1271 return; 1272 } 1273 synchronized (mLock) { 1274 int userId = UserHandle.getCallingUserId(); 1275 WallpaperData wallpaper = getWallpaperSafeLocked(userId, FLAG_SYSTEM); 1276 if (padding.left < 0 || padding.top < 0 || padding.right < 0 || padding.bottom < 0) { 1277 throw new IllegalArgumentException("padding must be positive: " + padding); 1278 } 1279 1280 if (!padding.equals(wallpaper.padding)) { 1281 wallpaper.padding.set(padding); 1282 saveSettingsLocked(userId); 1283 if (mCurrentUserId != userId) return; // Don't change the properties now 1284 if (wallpaper.connection != null) { 1285 if (wallpaper.connection.mEngine != null) { 1286 try { 1287 wallpaper.connection.mEngine.setDisplayPadding(padding); 1288 } catch (RemoteException e) { 1289 } 1290 notifyCallbacksLocked(wallpaper); 1291 } else if (wallpaper.connection.mService != null) { 1292 // We've attached to the service but the engine hasn't attached back to us 1293 // yet. This means it will be created with the previous dimensions, so we 1294 // need to update it to the new dimensions once it attaches. 1295 wallpaper.connection.mPaddingChanged = true; 1296 } 1297 } 1298 } 1299 } 1300 } 1301 1302 @Override 1303 public ParcelFileDescriptor getWallpaper(IWallpaperManagerCallback cb, final int which, 1304 Bundle outParams, int wallpaperUserId) { 1305 wallpaperUserId = ActivityManager.handleIncomingUser(Binder.getCallingPid(), 1306 Binder.getCallingUid(), wallpaperUserId, false, true, "getWallpaper", null); 1307 1308 if (which != FLAG_SYSTEM && which != FLAG_LOCK) { 1309 throw new IllegalArgumentException("Must specify exactly one kind of wallpaper to read"); 1310 } 1311 1312 synchronized (mLock) { 1313 final SparseArray<WallpaperData> whichSet = 1314 (which == FLAG_LOCK) ? mLockWallpaperMap : mWallpaperMap; 1315 WallpaperData wallpaper = whichSet.get(wallpaperUserId); 1316 if (wallpaper == null) { 1317 // common case, this is the first lookup post-boot of the system or 1318 // unified lock, so we bring up the saved state lazily now and recheck. 1319 loadSettingsLocked(wallpaperUserId, false); 1320 wallpaper = whichSet.get(wallpaperUserId); 1321 if (wallpaper == null) { 1322 return null; 1323 } 1324 } 1325 try { 1326 if (outParams != null) { 1327 outParams.putInt("width", wallpaper.width); 1328 outParams.putInt("height", wallpaper.height); 1329 } 1330 if (cb != null) { 1331 wallpaper.callbacks.register(cb); 1332 } 1333 if (!wallpaper.cropFile.exists()) { 1334 return null; 1335 } 1336 return ParcelFileDescriptor.open(wallpaper.cropFile, MODE_READ_ONLY); 1337 } catch (FileNotFoundException e) { 1338 /* Shouldn't happen as we check to see if the file exists */ 1339 Slog.w(TAG, "Error getting wallpaper", e); 1340 } 1341 return null; 1342 } 1343 } 1344 1345 @Override 1346 public WallpaperInfo getWallpaperInfo(int userId) { 1347 userId = ActivityManager.handleIncomingUser(Binder.getCallingPid(), 1348 Binder.getCallingUid(), userId, false, true, "getWallpaperIdForUser", null); 1349 synchronized (mLock) { 1350 WallpaperData wallpaper = mWallpaperMap.get(userId); 1351 if (wallpaper != null && wallpaper.connection != null) { 1352 return wallpaper.connection.mInfo; 1353 } 1354 return null; 1355 } 1356 } 1357 1358 @Override 1359 public int getWallpaperIdForUser(int which, int userId) { 1360 userId = ActivityManager.handleIncomingUser(Binder.getCallingPid(), 1361 Binder.getCallingUid(), userId, false, true, "getWallpaperIdForUser", null); 1362 1363 if (which != FLAG_SYSTEM && which != FLAG_LOCK) { 1364 throw new IllegalArgumentException("Must specify exactly one kind of wallpaper"); 1365 } 1366 1367 final SparseArray<WallpaperData> map = 1368 (which == FLAG_LOCK) ? mLockWallpaperMap : mWallpaperMap; 1369 synchronized (mLock) { 1370 WallpaperData wallpaper = map.get(userId); 1371 if (wallpaper != null) { 1372 return wallpaper.wallpaperId; 1373 } 1374 } 1375 return -1; 1376 } 1377 1378 @Override 1379 public boolean setLockWallpaperCallback(IWallpaperManagerCallback cb) { 1380 checkPermission(android.Manifest.permission.INTERNAL_SYSTEM_WINDOW); 1381 synchronized (mLock) { 1382 mKeyguardListener = cb; 1383 } 1384 return true; 1385 } 1386 1387 @Override 1388 public ParcelFileDescriptor setWallpaper(String name, String callingPackage, 1389 Rect cropHint, boolean allowBackup, Bundle extras, int which, 1390 IWallpaperManagerCallback completion, int userId) { 1391 userId = ActivityManager.handleIncomingUser(getCallingPid(), getCallingUid(), userId, 1392 false /* all */, true /* full */, "changing wallpaper", null /* pkg */); 1393 checkPermission(android.Manifest.permission.SET_WALLPAPER); 1394 1395 if ((which & (FLAG_LOCK|FLAG_SYSTEM)) == 0) { 1396 final String msg = "Must specify a valid wallpaper category to set"; 1397 Slog.e(TAG, msg); 1398 throw new IllegalArgumentException(msg); 1399 } 1400 1401 if (!isWallpaperSupported(callingPackage) || !isSetWallpaperAllowed(callingPackage)) { 1402 return null; 1403 } 1404 1405 // "null" means the no-op crop, preserving the full input image 1406 if (cropHint == null) { 1407 cropHint = new Rect(0, 0, 0, 0); 1408 } else { 1409 if (cropHint.isEmpty() 1410 || cropHint.left < 0 1411 || cropHint.top < 0) { 1412 throw new IllegalArgumentException("Invalid crop rect supplied: " + cropHint); 1413 } 1414 } 1415 1416 synchronized (mLock) { 1417 if (DEBUG) Slog.v(TAG, "setWallpaper which=0x" + Integer.toHexString(which)); 1418 WallpaperData wallpaper; 1419 1420 /* If we're setting system but not lock, and lock is currently sharing the system 1421 * wallpaper, we need to migrate that image over to being lock-only before 1422 * the caller here writes new bitmap data. 1423 */ 1424 if (which == FLAG_SYSTEM && mLockWallpaperMap.get(userId) == null) { 1425 if (DEBUG) { 1426 Slog.i(TAG, "Migrating system->lock to preserve"); 1427 } 1428 migrateSystemToLockWallpaperLocked(userId); 1429 } 1430 1431 wallpaper = getWallpaperSafeLocked(userId, which); 1432 final long ident = Binder.clearCallingIdentity(); 1433 try { 1434 ParcelFileDescriptor pfd = updateWallpaperBitmapLocked(name, wallpaper, extras); 1435 if (pfd != null) { 1436 wallpaper.imageWallpaperPending = true; 1437 wallpaper.whichPending = which; 1438 wallpaper.setComplete = completion; 1439 wallpaper.cropHint.set(cropHint); 1440 wallpaper.allowBackup = allowBackup; 1441 } 1442 return pfd; 1443 } finally { 1444 Binder.restoreCallingIdentity(ident); 1445 } 1446 } 1447 } 1448 1449 private void migrateSystemToLockWallpaperLocked(int userId) { 1450 WallpaperData sysWP = mWallpaperMap.get(userId); 1451 if (sysWP == null) { 1452 if (DEBUG) { 1453 Slog.i(TAG, "No system wallpaper? Not tracking for lock-only"); 1454 } 1455 return; 1456 } 1457 1458 // We know a-priori that there is no lock-only wallpaper currently 1459 WallpaperData lockWP = new WallpaperData(userId, 1460 WALLPAPER_LOCK_ORIG, WALLPAPER_LOCK_CROP); 1461 lockWP.wallpaperId = sysWP.wallpaperId; 1462 lockWP.cropHint.set(sysWP.cropHint); 1463 lockWP.width = sysWP.width; 1464 lockWP.height = sysWP.height; 1465 lockWP.allowBackup = false; 1466 1467 // Migrate the bitmap files outright; no need to copy 1468 try { 1469 Os.rename(sysWP.wallpaperFile.getAbsolutePath(), lockWP.wallpaperFile.getAbsolutePath()); 1470 Os.rename(sysWP.cropFile.getAbsolutePath(), lockWP.cropFile.getAbsolutePath()); 1471 } catch (ErrnoException e) { 1472 Slog.e(TAG, "Can't migrate system wallpaper: " + e.getMessage()); 1473 lockWP.wallpaperFile.delete(); 1474 lockWP.cropFile.delete(); 1475 return; 1476 } 1477 1478 mLockWallpaperMap.put(userId, lockWP); 1479 } 1480 1481 ParcelFileDescriptor updateWallpaperBitmapLocked(String name, WallpaperData wallpaper, 1482 Bundle extras) { 1483 if (name == null) name = ""; 1484 try { 1485 File dir = getWallpaperDir(wallpaper.userId); 1486 if (!dir.exists()) { 1487 dir.mkdir(); 1488 FileUtils.setPermissions( 1489 dir.getPath(), 1490 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 1491 -1, -1); 1492 } 1493 ParcelFileDescriptor fd = ParcelFileDescriptor.open(wallpaper.wallpaperFile, 1494 MODE_CREATE|MODE_READ_WRITE|MODE_TRUNCATE); 1495 if (!SELinux.restorecon(wallpaper.wallpaperFile)) { 1496 return null; 1497 } 1498 wallpaper.name = name; 1499 wallpaper.wallpaperId = makeWallpaperIdLocked(); 1500 if (extras != null) { 1501 extras.putInt(WallpaperManager.EXTRA_NEW_WALLPAPER_ID, wallpaper.wallpaperId); 1502 } 1503 if (DEBUG) { 1504 Slog.v(TAG, "updateWallpaperBitmapLocked() : id=" + wallpaper.wallpaperId 1505 + " name=" + name + " file=" + wallpaper.wallpaperFile.getName()); 1506 } 1507 return fd; 1508 } catch (FileNotFoundException e) { 1509 Slog.w(TAG, "Error setting wallpaper", e); 1510 } 1511 return null; 1512 } 1513 1514 @Override 1515 public void setWallpaperComponentChecked(ComponentName name, String callingPackage, 1516 int userId) { 1517 1518 if (isWallpaperSupported(callingPackage) && isSetWallpaperAllowed(callingPackage)) { 1519 setWallpaperComponent(name, userId); 1520 } 1521 } 1522 1523 // ToDo: Remove this version of the function 1524 @Override 1525 public void setWallpaperComponent(ComponentName name) { 1526 setWallpaperComponent(name, UserHandle.getCallingUserId()); 1527 } 1528 1529 private void setWallpaperComponent(ComponentName name, int userId) { 1530 userId = ActivityManager.handleIncomingUser(getCallingPid(), getCallingUid(), userId, 1531 false /* all */, true /* full */, "changing live wallpaper", null /* pkg */); 1532 checkPermission(android.Manifest.permission.SET_WALLPAPER_COMPONENT); 1533 1534 synchronized (mLock) { 1535 if (DEBUG) Slog.v(TAG, "setWallpaperComponent name=" + name); 1536 WallpaperData wallpaper = mWallpaperMap.get(userId); 1537 if (wallpaper == null) { 1538 throw new IllegalStateException("Wallpaper not yet initialized for user " + userId); 1539 } 1540 final long ident = Binder.clearCallingIdentity(); 1541 try { 1542 wallpaper.imageWallpaperPending = false; 1543 if (bindWallpaperComponentLocked(name, false, true, wallpaper, null)) { 1544 wallpaper.wallpaperId = makeWallpaperIdLocked(); 1545 notifyCallbacksLocked(wallpaper); 1546 } 1547 } finally { 1548 Binder.restoreCallingIdentity(ident); 1549 } 1550 } 1551 } 1552 1553 boolean bindWallpaperComponentLocked(ComponentName componentName, boolean force, 1554 boolean fromUser, WallpaperData wallpaper, IRemoteCallback reply) { 1555 if (DEBUG) Slog.v(TAG, "bindWallpaperComponentLocked: componentName=" + componentName); 1556 // Has the component changed? 1557 if (!force) { 1558 if (wallpaper.connection != null) { 1559 if (wallpaper.wallpaperComponent == null) { 1560 if (componentName == null) { 1561 if (DEBUG) Slog.v(TAG, "bindWallpaperComponentLocked: still using default"); 1562 // Still using default wallpaper. 1563 return true; 1564 } 1565 } else if (wallpaper.wallpaperComponent.equals(componentName)) { 1566 // Changing to same wallpaper. 1567 if (DEBUG) Slog.v(TAG, "same wallpaper"); 1568 return true; 1569 } 1570 } 1571 } 1572 1573 try { 1574 if (componentName == null) { 1575 componentName = WallpaperManager.getDefaultWallpaperComponent(mContext); 1576 if (componentName == null) { 1577 // Fall back to static image wallpaper 1578 componentName = mImageWallpaper; 1579 //clearWallpaperComponentLocked(); 1580 //return; 1581 if (DEBUG) Slog.v(TAG, "Using image wallpaper"); 1582 } 1583 } 1584 int serviceUserId = wallpaper.userId; 1585 ServiceInfo si = mIPackageManager.getServiceInfo(componentName, 1586 PackageManager.GET_META_DATA | PackageManager.GET_PERMISSIONS, serviceUserId); 1587 if (si == null) { 1588 // The wallpaper component we're trying to use doesn't exist 1589 Slog.w(TAG, "Attempted wallpaper " + componentName + " is unavailable"); 1590 return false; 1591 } 1592 if (!android.Manifest.permission.BIND_WALLPAPER.equals(si.permission)) { 1593 String msg = "Selected service does not require " 1594 + android.Manifest.permission.BIND_WALLPAPER 1595 + ": " + componentName; 1596 if (fromUser) { 1597 throw new SecurityException(msg); 1598 } 1599 Slog.w(TAG, msg); 1600 return false; 1601 } 1602 1603 WallpaperInfo wi = null; 1604 1605 Intent intent = new Intent(WallpaperService.SERVICE_INTERFACE); 1606 if (componentName != null && !componentName.equals(mImageWallpaper)) { 1607 // Make sure the selected service is actually a wallpaper service. 1608 List<ResolveInfo> ris = 1609 mIPackageManager.queryIntentServices(intent, 1610 intent.resolveTypeIfNeeded(mContext.getContentResolver()), 1611 PackageManager.GET_META_DATA, serviceUserId).getList(); 1612 for (int i=0; i<ris.size(); i++) { 1613 ServiceInfo rsi = ris.get(i).serviceInfo; 1614 if (rsi.name.equals(si.name) && 1615 rsi.packageName.equals(si.packageName)) { 1616 try { 1617 wi = new WallpaperInfo(mContext, ris.get(i)); 1618 } catch (XmlPullParserException e) { 1619 if (fromUser) { 1620 throw new IllegalArgumentException(e); 1621 } 1622 Slog.w(TAG, e); 1623 return false; 1624 } catch (IOException e) { 1625 if (fromUser) { 1626 throw new IllegalArgumentException(e); 1627 } 1628 Slog.w(TAG, e); 1629 return false; 1630 } 1631 break; 1632 } 1633 } 1634 if (wi == null) { 1635 String msg = "Selected service is not a wallpaper: " 1636 + componentName; 1637 if (fromUser) { 1638 throw new SecurityException(msg); 1639 } 1640 Slog.w(TAG, msg); 1641 return false; 1642 } 1643 } 1644 1645 // Bind the service! 1646 if (DEBUG) Slog.v(TAG, "Binding to:" + componentName); 1647 WallpaperConnection newConn = new WallpaperConnection(wi, wallpaper); 1648 intent.setComponent(componentName); 1649 intent.putExtra(Intent.EXTRA_CLIENT_LABEL, 1650 com.android.internal.R.string.wallpaper_binding_label); 1651 intent.putExtra(Intent.EXTRA_CLIENT_INTENT, PendingIntent.getActivityAsUser( 1652 mContext, 0, 1653 Intent.createChooser(new Intent(Intent.ACTION_SET_WALLPAPER), 1654 mContext.getText(com.android.internal.R.string.chooser_wallpaper)), 1655 0, null, new UserHandle(serviceUserId))); 1656 if (!mContext.bindServiceAsUser(intent, newConn, 1657 Context.BIND_AUTO_CREATE | Context.BIND_SHOWING_UI 1658 | Context.BIND_FOREGROUND_SERVICE_WHILE_AWAKE, 1659 new UserHandle(serviceUserId))) { 1660 String msg = "Unable to bind service: " 1661 + componentName; 1662 if (fromUser) { 1663 throw new IllegalArgumentException(msg); 1664 } 1665 Slog.w(TAG, msg); 1666 return false; 1667 } 1668 if (wallpaper.userId == mCurrentUserId && mLastWallpaper != null) { 1669 detachWallpaperLocked(mLastWallpaper); 1670 } 1671 wallpaper.wallpaperComponent = componentName; 1672 wallpaper.connection = newConn; 1673 newConn.mReply = reply; 1674 try { 1675 if (wallpaper.userId == mCurrentUserId) { 1676 if (DEBUG) 1677 Slog.v(TAG, "Adding window token: " + newConn.mToken); 1678 mIWindowManager.addWindowToken(newConn.mToken, 1679 WindowManager.LayoutParams.TYPE_WALLPAPER); 1680 mLastWallpaper = wallpaper; 1681 } 1682 } catch (RemoteException e) { 1683 } 1684 } catch (RemoteException e) { 1685 String msg = "Remote exception for " + componentName + "\n" + e; 1686 if (fromUser) { 1687 throw new IllegalArgumentException(msg); 1688 } 1689 Slog.w(TAG, msg); 1690 return false; 1691 } 1692 return true; 1693 } 1694 1695 void detachWallpaperLocked(WallpaperData wallpaper) { 1696 if (wallpaper.connection != null) { 1697 if (wallpaper.connection.mReply != null) { 1698 try { 1699 wallpaper.connection.mReply.sendResult(null); 1700 } catch (RemoteException e) { 1701 } 1702 wallpaper.connection.mReply = null; 1703 } 1704 if (wallpaper.connection.mEngine != null) { 1705 try { 1706 wallpaper.connection.mEngine.destroy(); 1707 } catch (RemoteException e) { 1708 } 1709 } 1710 mContext.unbindService(wallpaper.connection); 1711 try { 1712 if (DEBUG) 1713 Slog.v(TAG, "Removing window token: " + wallpaper.connection.mToken); 1714 mIWindowManager.removeWindowToken(wallpaper.connection.mToken); 1715 } catch (RemoteException e) { 1716 } 1717 wallpaper.connection.mService = null; 1718 wallpaper.connection.mEngine = null; 1719 wallpaper.connection = null; 1720 } 1721 } 1722 1723 void clearWallpaperComponentLocked(WallpaperData wallpaper) { 1724 wallpaper.wallpaperComponent = null; 1725 detachWallpaperLocked(wallpaper); 1726 } 1727 1728 void attachServiceLocked(WallpaperConnection conn, WallpaperData wallpaper) { 1729 try { 1730 conn.mService.attach(conn, conn.mToken, 1731 WindowManager.LayoutParams.TYPE_WALLPAPER, false, 1732 wallpaper.width, wallpaper.height, wallpaper.padding); 1733 } catch (RemoteException e) { 1734 Slog.w(TAG, "Failed attaching wallpaper; clearing", e); 1735 if (!wallpaper.wallpaperUpdating) { 1736 bindWallpaperComponentLocked(null, false, false, wallpaper, null); 1737 } 1738 } 1739 } 1740 1741 private void notifyCallbacksLocked(WallpaperData wallpaper) { 1742 final int n = wallpaper.callbacks.beginBroadcast(); 1743 for (int i = 0; i < n; i++) { 1744 try { 1745 wallpaper.callbacks.getBroadcastItem(i).onWallpaperChanged(); 1746 } catch (RemoteException e) { 1747 1748 // The RemoteCallbackList will take care of removing 1749 // the dead object for us. 1750 } 1751 } 1752 wallpaper.callbacks.finishBroadcast(); 1753 final Intent intent = new Intent(Intent.ACTION_WALLPAPER_CHANGED); 1754 mContext.sendBroadcastAsUser(intent, new UserHandle(mCurrentUserId)); 1755 } 1756 1757 private void checkPermission(String permission) { 1758 if (PackageManager.PERMISSION_GRANTED!= mContext.checkCallingOrSelfPermission(permission)) { 1759 throw new SecurityException("Access denied to process: " + Binder.getCallingPid() 1760 + ", must have permission " + permission); 1761 } 1762 } 1763 1764 /** 1765 * Certain user types do not support wallpapers (e.g. managed profiles). The check is 1766 * implemented through through the OP_WRITE_WALLPAPER AppOp. 1767 */ 1768 public boolean isWallpaperSupported(String callingPackage) { 1769 return mAppOpsManager.checkOpNoThrow(AppOpsManager.OP_WRITE_WALLPAPER, Binder.getCallingUid(), 1770 callingPackage) == AppOpsManager.MODE_ALLOWED; 1771 } 1772 1773 @Override 1774 public boolean isSetWallpaperAllowed(String callingPackage) { 1775 final PackageManager pm = mContext.getPackageManager(); 1776 String[] uidPackages = pm.getPackagesForUid(Binder.getCallingUid()); 1777 boolean uidMatchPackage = Arrays.asList(uidPackages).contains(callingPackage); 1778 if (!uidMatchPackage) { 1779 return false; // callingPackage was faked. 1780 } 1781 1782 final DevicePolicyManager dpm = mContext.getSystemService(DevicePolicyManager.class); 1783 if (dpm.isDeviceOwnerApp(callingPackage) || dpm.isProfileOwnerApp(callingPackage)) { 1784 return true; 1785 } 1786 final UserManager um = (UserManager) mContext.getSystemService(Context.USER_SERVICE); 1787 return !um.hasUserRestriction(UserManager.DISALLOW_SET_WALLPAPER); 1788 } 1789 1790 @Override 1791 public boolean isWallpaperBackupEligible(int which, int userId) { 1792 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 1793 throw new SecurityException("Only the system may call isWallpaperBackupEligible"); 1794 } 1795 1796 WallpaperData wallpaper = (which == FLAG_LOCK) 1797 ? mLockWallpaperMap.get(userId) 1798 : mWallpaperMap.get(userId); 1799 return (wallpaper != null) ? wallpaper.allowBackup : false; 1800 } 1801 1802 private static JournaledFile makeJournaledFile(int userId) { 1803 final String base = new File(getWallpaperDir(userId), WALLPAPER_INFO).getAbsolutePath(); 1804 return new JournaledFile(new File(base), new File(base + ".tmp")); 1805 } 1806 1807 private void saveSettingsLocked(int userId) { 1808 JournaledFile journal = makeJournaledFile(userId); 1809 FileOutputStream fstream = null; 1810 BufferedOutputStream stream = null; 1811 try { 1812 XmlSerializer out = new FastXmlSerializer(); 1813 fstream = new FileOutputStream(journal.chooseForWrite(), false); 1814 stream = new BufferedOutputStream(fstream); 1815 out.setOutput(stream, StandardCharsets.UTF_8.name()); 1816 out.startDocument(null, true); 1817 1818 WallpaperData wallpaper; 1819 1820 wallpaper = mWallpaperMap.get(userId); 1821 if (wallpaper != null) { 1822 writeWallpaperAttributes(out, "wp", wallpaper); 1823 } 1824 wallpaper = mLockWallpaperMap.get(userId); 1825 if (wallpaper != null) { 1826 writeWallpaperAttributes(out, "kwp", wallpaper); 1827 } 1828 1829 out.endDocument(); 1830 1831 stream.flush(); // also flushes fstream 1832 FileUtils.sync(fstream); 1833 stream.close(); // also closes fstream 1834 journal.commit(); 1835 } catch (IOException e) { 1836 IoUtils.closeQuietly(stream); 1837 journal.rollback(); 1838 } 1839 } 1840 1841 private void writeWallpaperAttributes(XmlSerializer out, String tag, WallpaperData wallpaper) 1842 throws IllegalArgumentException, IllegalStateException, IOException { 1843 out.startTag(null, tag); 1844 out.attribute(null, "id", Integer.toString(wallpaper.wallpaperId)); 1845 out.attribute(null, "width", Integer.toString(wallpaper.width)); 1846 out.attribute(null, "height", Integer.toString(wallpaper.height)); 1847 1848 out.attribute(null, "cropLeft", Integer.toString(wallpaper.cropHint.left)); 1849 out.attribute(null, "cropTop", Integer.toString(wallpaper.cropHint.top)); 1850 out.attribute(null, "cropRight", Integer.toString(wallpaper.cropHint.right)); 1851 out.attribute(null, "cropBottom", Integer.toString(wallpaper.cropHint.bottom)); 1852 1853 if (wallpaper.padding.left != 0) { 1854 out.attribute(null, "paddingLeft", Integer.toString(wallpaper.padding.left)); 1855 } 1856 if (wallpaper.padding.top != 0) { 1857 out.attribute(null, "paddingTop", Integer.toString(wallpaper.padding.top)); 1858 } 1859 if (wallpaper.padding.right != 0) { 1860 out.attribute(null, "paddingRight", Integer.toString(wallpaper.padding.right)); 1861 } 1862 if (wallpaper.padding.bottom != 0) { 1863 out.attribute(null, "paddingBottom", Integer.toString(wallpaper.padding.bottom)); 1864 } 1865 1866 out.attribute(null, "name", wallpaper.name); 1867 if (wallpaper.wallpaperComponent != null 1868 && !wallpaper.wallpaperComponent.equals(mImageWallpaper)) { 1869 out.attribute(null, "component", 1870 wallpaper.wallpaperComponent.flattenToShortString()); 1871 } 1872 1873 if (wallpaper.allowBackup) { 1874 out.attribute(null, "backup", "true"); 1875 } 1876 1877 out.endTag(null, tag); 1878 } 1879 1880 private void migrateFromOld() { 1881 File oldWallpaper = new File(WallpaperBackupHelper.WALLPAPER_IMAGE_KEY); 1882 File oldInfo = new File(WallpaperBackupHelper.WALLPAPER_INFO_KEY); 1883 if (oldWallpaper.exists()) { 1884 File newWallpaper = new File(getWallpaperDir(0), WALLPAPER); 1885 oldWallpaper.renameTo(newWallpaper); 1886 } 1887 if (oldInfo.exists()) { 1888 File newInfo = new File(getWallpaperDir(0), WALLPAPER_INFO); 1889 oldInfo.renameTo(newInfo); 1890 } 1891 } 1892 1893 private int getAttributeInt(XmlPullParser parser, String name, int defValue) { 1894 String value = parser.getAttributeValue(null, name); 1895 if (value == null) { 1896 return defValue; 1897 } 1898 return Integer.parseInt(value); 1899 } 1900 1901 /** 1902 * Sometimes it is expected the wallpaper map may not have a user's data. E.g. This could 1903 * happen during user switch. The async user switch observer may not have received 1904 * the event yet. We use this safe method when we don't care about this ordering and just 1905 * want to update the data. The data is going to be applied when the user switch observer 1906 * is eventually executed. 1907 */ 1908 private WallpaperData getWallpaperSafeLocked(int userId, int which) { 1909 // We're setting either just system (work with the system wallpaper), 1910 // both (also work with the system wallpaper), or just the lock 1911 // wallpaper (update against the existing lock wallpaper if any). 1912 // Combined or just-system operations use the 'system' WallpaperData 1913 // for this use; lock-only operations use the dedicated one. 1914 final SparseArray<WallpaperData> whichSet = 1915 (which == FLAG_LOCK) ? mLockWallpaperMap : mWallpaperMap; 1916 WallpaperData wallpaper = whichSet.get(userId); 1917 if (wallpaper == null) { 1918 // common case, this is the first lookup post-boot of the system or 1919 // unified lock, so we bring up the saved state lazily now and recheck. 1920 loadSettingsLocked(userId, false); 1921 wallpaper = whichSet.get(userId); 1922 // if it's still null here, this is a lock-only operation and there is not 1923 // yet a lock-only wallpaper set for this user, so we need to establish 1924 // it now. 1925 if (wallpaper == null) { 1926 if (which == FLAG_LOCK) { 1927 wallpaper = new WallpaperData(userId, 1928 WALLPAPER_LOCK_ORIG, WALLPAPER_LOCK_CROP); 1929 mLockWallpaperMap.put(userId, wallpaper); 1930 ensureSaneWallpaperData(wallpaper); 1931 } else { 1932 // sanity fallback: we're in bad shape, but establishing a known 1933 // valid system+lock WallpaperData will keep us from dying. 1934 Slog.wtf(TAG, "Didn't find wallpaper in non-lock case!"); 1935 wallpaper = new WallpaperData(userId, WALLPAPER, WALLPAPER_CROP); 1936 mWallpaperMap.put(userId, wallpaper); 1937 ensureSaneWallpaperData(wallpaper); 1938 } 1939 } 1940 } 1941 return wallpaper; 1942 } 1943 1944 private void loadSettingsLocked(int userId, boolean keepDimensionHints) { 1945 if (DEBUG) Slog.v(TAG, "loadSettingsLocked"); 1946 1947 JournaledFile journal = makeJournaledFile(userId); 1948 FileInputStream stream = null; 1949 File file = journal.chooseForRead(); 1950 if (!file.exists()) { 1951 // This should only happen one time, when upgrading from a legacy system 1952 migrateFromOld(); 1953 } 1954 WallpaperData wallpaper = mWallpaperMap.get(userId); 1955 if (wallpaper == null) { 1956 wallpaper = new WallpaperData(userId, WALLPAPER, WALLPAPER_CROP); 1957 wallpaper.allowBackup = true; 1958 mWallpaperMap.put(userId, wallpaper); 1959 if (!wallpaper.cropExists()) { 1960 generateCrop(wallpaper); 1961 } 1962 } 1963 boolean success = false; 1964 try { 1965 stream = new FileInputStream(file); 1966 XmlPullParser parser = Xml.newPullParser(); 1967 parser.setInput(stream, StandardCharsets.UTF_8.name()); 1968 1969 int type; 1970 do { 1971 type = parser.next(); 1972 if (type == XmlPullParser.START_TAG) { 1973 String tag = parser.getName(); 1974 if ("wp".equals(tag)) { 1975 // Common to system + lock wallpapers 1976 parseWallpaperAttributes(parser, wallpaper, keepDimensionHints); 1977 1978 // A system wallpaper might also be a live wallpaper 1979 String comp = parser.getAttributeValue(null, "component"); 1980 wallpaper.nextWallpaperComponent = comp != null 1981 ? ComponentName.unflattenFromString(comp) 1982 : null; 1983 if (wallpaper.nextWallpaperComponent == null 1984 || "android".equals(wallpaper.nextWallpaperComponent 1985 .getPackageName())) { 1986 wallpaper.nextWallpaperComponent = mImageWallpaper; 1987 } 1988 1989 if (DEBUG) { 1990 Slog.v(TAG, "mWidth:" + wallpaper.width); 1991 Slog.v(TAG, "mHeight:" + wallpaper.height); 1992 Slog.v(TAG, "cropRect:" + wallpaper.cropHint); 1993 Slog.v(TAG, "mName:" + wallpaper.name); 1994 Slog.v(TAG, "mNextWallpaperComponent:" 1995 + wallpaper.nextWallpaperComponent); 1996 } 1997 } else if ("kwp".equals(tag)) { 1998 // keyguard-specific wallpaper for this user 1999 WallpaperData lockWallpaper = mLockWallpaperMap.get(userId); 2000 if (lockWallpaper == null) { 2001 lockWallpaper = new WallpaperData(userId, 2002 WALLPAPER_LOCK_ORIG, WALLPAPER_LOCK_CROP); 2003 mLockWallpaperMap.put(userId, lockWallpaper); 2004 } 2005 parseWallpaperAttributes(parser, lockWallpaper, false); 2006 } 2007 } 2008 } while (type != XmlPullParser.END_DOCUMENT); 2009 success = true; 2010 } catch (FileNotFoundException e) { 2011 Slog.w(TAG, "no current wallpaper -- first boot?"); 2012 } catch (NullPointerException e) { 2013 Slog.w(TAG, "failed parsing " + file + " " + e); 2014 } catch (NumberFormatException e) { 2015 Slog.w(TAG, "failed parsing " + file + " " + e); 2016 } catch (XmlPullParserException e) { 2017 Slog.w(TAG, "failed parsing " + file + " " + e); 2018 } catch (IOException e) { 2019 Slog.w(TAG, "failed parsing " + file + " " + e); 2020 } catch (IndexOutOfBoundsException e) { 2021 Slog.w(TAG, "failed parsing " + file + " " + e); 2022 } 2023 IoUtils.closeQuietly(stream); 2024 2025 if (!success) { 2026 wallpaper.width = -1; 2027 wallpaper.height = -1; 2028 wallpaper.cropHint.set(0, 0, 0, 0); 2029 wallpaper.padding.set(0, 0, 0, 0); 2030 wallpaper.name = ""; 2031 2032 mLockWallpaperMap.remove(userId); 2033 } else { 2034 if (wallpaper.wallpaperId <= 0) { 2035 wallpaper.wallpaperId = makeWallpaperIdLocked(); 2036 if (DEBUG) { 2037 Slog.w(TAG, "Didn't set wallpaper id in loadSettingsLocked(" + userId 2038 + "); now " + wallpaper.wallpaperId); 2039 } 2040 } 2041 } 2042 2043 ensureSaneWallpaperData(wallpaper); 2044 WallpaperData lockWallpaper = mLockWallpaperMap.get(userId); 2045 if (lockWallpaper != null) { 2046 ensureSaneWallpaperData(lockWallpaper); 2047 } 2048 } 2049 2050 private void ensureSaneWallpaperData(WallpaperData wallpaper) { 2051 // We always want to have some reasonable width hint. 2052 int baseSize = getMaximumSizeDimension(); 2053 if (wallpaper.width < baseSize) { 2054 wallpaper.width = baseSize; 2055 } 2056 if (wallpaper.height < baseSize) { 2057 wallpaper.height = baseSize; 2058 } 2059 // and crop, if not previously specified 2060 if (wallpaper.cropHint.width() <= 0 2061 || wallpaper.cropHint.height() <= 0) { 2062 wallpaper.cropHint.set(0, 0, wallpaper.width, wallpaper.height); 2063 } 2064 } 2065 2066 private void parseWallpaperAttributes(XmlPullParser parser, WallpaperData wallpaper, 2067 boolean keepDimensionHints) { 2068 final String idString = parser.getAttributeValue(null, "id"); 2069 if (idString != null) { 2070 final int id = wallpaper.wallpaperId = Integer.parseInt(idString); 2071 if (id > mWallpaperId) { 2072 mWallpaperId = id; 2073 } 2074 } else { 2075 wallpaper.wallpaperId = makeWallpaperIdLocked(); 2076 } 2077 2078 if (!keepDimensionHints) { 2079 wallpaper.width = Integer.parseInt(parser.getAttributeValue(null, "width")); 2080 wallpaper.height = Integer.parseInt(parser 2081 .getAttributeValue(null, "height")); 2082 } 2083 wallpaper.cropHint.left = getAttributeInt(parser, "cropLeft", 0); 2084 wallpaper.cropHint.top = getAttributeInt(parser, "cropTop", 0); 2085 wallpaper.cropHint.right = getAttributeInt(parser, "cropRight", 0); 2086 wallpaper.cropHint.bottom = getAttributeInt(parser, "cropBottom", 0); 2087 wallpaper.padding.left = getAttributeInt(parser, "paddingLeft", 0); 2088 wallpaper.padding.top = getAttributeInt(parser, "paddingTop", 0); 2089 wallpaper.padding.right = getAttributeInt(parser, "paddingRight", 0); 2090 wallpaper.padding.bottom = getAttributeInt(parser, "paddingBottom", 0); 2091 wallpaper.name = parser.getAttributeValue(null, "name"); 2092 wallpaper.allowBackup = "true".equals(parser.getAttributeValue(null, "backup")); 2093 } 2094 2095 private int getMaximumSizeDimension() { 2096 WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE); 2097 Display d = wm.getDefaultDisplay(); 2098 return d.getMaximumSizeDimension(); 2099 } 2100 2101 // Called by SystemBackupAgent after files are restored to disk. 2102 public void settingsRestored() { 2103 // Verify caller is the system 2104 if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) { 2105 throw new RuntimeException("settingsRestored() can only be called from the system process"); 2106 } 2107 // TODO: If necessary, make it work for secondary users as well. This currently assumes 2108 // restores only to the primary user 2109 if (DEBUG) Slog.v(TAG, "settingsRestored"); 2110 WallpaperData wallpaper = null; 2111 boolean success = false; 2112 synchronized (mLock) { 2113 loadSettingsLocked(UserHandle.USER_SYSTEM, false); 2114 wallpaper = mWallpaperMap.get(UserHandle.USER_SYSTEM); 2115 wallpaper.wallpaperId = makeWallpaperIdLocked(); // always bump id at restore 2116 wallpaper.allowBackup = true; // by definition if it was restored 2117 if (wallpaper.nextWallpaperComponent != null 2118 && !wallpaper.nextWallpaperComponent.equals(mImageWallpaper)) { 2119 if (!bindWallpaperComponentLocked(wallpaper.nextWallpaperComponent, false, false, 2120 wallpaper, null)) { 2121 // No such live wallpaper or other failure; fall back to the default 2122 // live wallpaper (since the profile being restored indicated that the 2123 // user had selected a live rather than static one). 2124 bindWallpaperComponentLocked(null, false, false, wallpaper, null); 2125 } 2126 success = true; 2127 } else { 2128 // If there's a wallpaper name, we use that. If that can't be loaded, then we 2129 // use the default. 2130 if ("".equals(wallpaper.name)) { 2131 if (DEBUG) Slog.v(TAG, "settingsRestored: name is empty"); 2132 success = true; 2133 } else { 2134 if (DEBUG) Slog.v(TAG, "settingsRestored: attempting to restore named resource"); 2135 success = restoreNamedResourceLocked(wallpaper); 2136 } 2137 if (DEBUG) Slog.v(TAG, "settingsRestored: success=" + success 2138 + " id=" + wallpaper.wallpaperId); 2139 if (success) { 2140 generateCrop(wallpaper); // based on the new image + metadata 2141 bindWallpaperComponentLocked(wallpaper.nextWallpaperComponent, true, false, 2142 wallpaper, null); 2143 } 2144 } 2145 } 2146 2147 if (!success) { 2148 Slog.e(TAG, "Failed to restore wallpaper: '" + wallpaper.name + "'"); 2149 wallpaper.name = ""; 2150 getWallpaperDir(UserHandle.USER_SYSTEM).delete(); 2151 } 2152 2153 synchronized (mLock) { 2154 saveSettingsLocked(UserHandle.USER_SYSTEM); 2155 } 2156 } 2157 2158 // Restore the named resource bitmap to both source + crop files 2159 boolean restoreNamedResourceLocked(WallpaperData wallpaper) { 2160 if (wallpaper.name.length() > 4 && "res:".equals(wallpaper.name.substring(0, 4))) { 2161 String resName = wallpaper.name.substring(4); 2162 2163 String pkg = null; 2164 int colon = resName.indexOf(':'); 2165 if (colon > 0) { 2166 pkg = resName.substring(0, colon); 2167 } 2168 2169 String ident = null; 2170 int slash = resName.lastIndexOf('/'); 2171 if (slash > 0) { 2172 ident = resName.substring(slash+1); 2173 } 2174 2175 String type = null; 2176 if (colon > 0 && slash > 0 && (slash-colon) > 1) { 2177 type = resName.substring(colon+1, slash); 2178 } 2179 2180 if (pkg != null && ident != null && type != null) { 2181 int resId = -1; 2182 InputStream res = null; 2183 FileOutputStream fos = null; 2184 FileOutputStream cos = null; 2185 try { 2186 Context c = mContext.createPackageContext(pkg, Context.CONTEXT_RESTRICTED); 2187 Resources r = c.getResources(); 2188 resId = r.getIdentifier(resName, null, null); 2189 if (resId == 0) { 2190 Slog.e(TAG, "couldn't resolve identifier pkg=" + pkg + " type=" + type 2191 + " ident=" + ident); 2192 return false; 2193 } 2194 2195 res = r.openRawResource(resId); 2196 if (wallpaper.wallpaperFile.exists()) { 2197 wallpaper.wallpaperFile.delete(); 2198 wallpaper.cropFile.delete(); 2199 } 2200 fos = new FileOutputStream(wallpaper.wallpaperFile); 2201 cos = new FileOutputStream(wallpaper.cropFile); 2202 2203 byte[] buffer = new byte[32768]; 2204 int amt; 2205 while ((amt=res.read(buffer)) > 0) { 2206 fos.write(buffer, 0, amt); 2207 cos.write(buffer, 0, amt); 2208 } 2209 // mWallpaperObserver will notice the close and send the change broadcast 2210 2211 Slog.v(TAG, "Restored wallpaper: " + resName); 2212 return true; 2213 } catch (NameNotFoundException e) { 2214 Slog.e(TAG, "Package name " + pkg + " not found"); 2215 } catch (Resources.NotFoundException e) { 2216 Slog.e(TAG, "Resource not found: " + resId); 2217 } catch (IOException e) { 2218 Slog.e(TAG, "IOException while restoring wallpaper ", e); 2219 } finally { 2220 IoUtils.closeQuietly(res); 2221 if (fos != null) { 2222 FileUtils.sync(fos); 2223 } 2224 if (cos != null) { 2225 FileUtils.sync(cos); 2226 } 2227 IoUtils.closeQuietly(fos); 2228 IoUtils.closeQuietly(cos); 2229 } 2230 } 2231 } 2232 return false; 2233 } 2234 2235 @Override 2236 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2237 if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) 2238 != PackageManager.PERMISSION_GRANTED) { 2239 2240 pw.println("Permission Denial: can't dump wallpaper service from from pid=" 2241 + Binder.getCallingPid() 2242 + ", uid=" + Binder.getCallingUid()); 2243 return; 2244 } 2245 2246 synchronized (mLock) { 2247 pw.println("System wallpaper state:"); 2248 for (int i = 0; i < mWallpaperMap.size(); i++) { 2249 WallpaperData wallpaper = mWallpaperMap.valueAt(i); 2250 pw.print(" User "); pw.print(wallpaper.userId); 2251 pw.print(": id="); pw.println(wallpaper.wallpaperId); 2252 pw.print(" mWidth="); 2253 pw.print(wallpaper.width); 2254 pw.print(" mHeight="); 2255 pw.println(wallpaper.height); 2256 pw.print(" mCropHint="); pw.println(wallpaper.cropHint); 2257 pw.print(" mPadding="); pw.println(wallpaper.padding); 2258 pw.print(" mName="); pw.println(wallpaper.name); 2259 pw.print(" mWallpaperComponent="); pw.println(wallpaper.wallpaperComponent); 2260 if (wallpaper.connection != null) { 2261 WallpaperConnection conn = wallpaper.connection; 2262 pw.print(" Wallpaper connection "); 2263 pw.print(conn); 2264 pw.println(":"); 2265 if (conn.mInfo != null) { 2266 pw.print(" mInfo.component="); 2267 pw.println(conn.mInfo.getComponent()); 2268 } 2269 pw.print(" mToken="); 2270 pw.println(conn.mToken); 2271 pw.print(" mService="); 2272 pw.println(conn.mService); 2273 pw.print(" mEngine="); 2274 pw.println(conn.mEngine); 2275 pw.print(" mLastDiedTime="); 2276 pw.println(wallpaper.lastDiedTime - SystemClock.uptimeMillis()); 2277 } 2278 } 2279 pw.println("Lock wallpaper state:"); 2280 for (int i = 0; i < mLockWallpaperMap.size(); i++) { 2281 WallpaperData wallpaper = mLockWallpaperMap.valueAt(i); 2282 pw.print(" User "); pw.print(wallpaper.userId); 2283 pw.print(": id="); pw.println(wallpaper.wallpaperId); 2284 pw.print(" mWidth="); pw.print(wallpaper.width); 2285 pw.print(" mHeight="); pw.println(wallpaper.height); 2286 pw.print(" mCropHint="); pw.println(wallpaper.cropHint); 2287 pw.print(" mPadding="); pw.println(wallpaper.padding); 2288 pw.print(" mName="); pw.println(wallpaper.name); 2289 } 2290 2291 } 2292 } 2293} 2294