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 import static android.view.Display.DEFAULT_DISPLAY; 26 import static android.view.WindowManager.LayoutParams.TYPE_WALLPAPER; 27 28 import android.annotation.NonNull; 29 import android.app.ActivityManager; 30 import android.app.AppGlobals; 31 import android.app.AppOpsManager; 32 import android.app.IWallpaperManager; 33 import android.app.IWallpaperManagerCallback; 34 import android.app.PendingIntent; 35 import android.app.UserSwitchObserver; 36 import android.app.WallpaperColors; 37 import android.app.WallpaperInfo; 38 import android.app.WallpaperManager; 39 import android.app.admin.DevicePolicyManager; 40 import android.app.backup.WallpaperBackupHelper; 41 import android.content.BroadcastReceiver; 42 import android.content.ComponentName; 43 import android.content.Context; 44 import android.content.Intent; 45 import android.content.IntentFilter; 46 import android.content.ServiceConnection; 47 import android.content.pm.IPackageManager; 48 import android.content.pm.PackageManager; 49 import android.content.pm.PackageManager.NameNotFoundException; 50 import android.content.pm.ResolveInfo; 51 import android.content.pm.ServiceInfo; 52 import android.content.pm.UserInfo; 53 import android.content.res.Resources; 54 import android.database.ContentObserver; 55 import android.graphics.Bitmap; 56 import android.graphics.BitmapFactory; 57 import android.graphics.BitmapRegionDecoder; 58 import android.graphics.Color; 59 import android.graphics.Point; 60 import android.graphics.Rect; 61 import android.os.Binder; 62 import android.os.Bundle; 63 import android.os.Environment; 64 import android.os.FileObserver; 65 import android.os.FileUtils; 66 import android.os.Handler; 67 import android.os.IBinder; 68 import android.os.IInterface; 69 import android.os.IRemoteCallback; 70 import android.os.ParcelFileDescriptor; 71 import android.os.Process; 72 import android.os.RemoteCallbackList; 73 import android.os.RemoteException; 74 import android.os.SELinux; 75 import android.os.ServiceManager; 76 import android.os.SystemClock; 77 import android.os.UserHandle; 78 import android.os.UserManager; 79 import android.provider.Settings; 80 import android.service.wallpaper.IWallpaperConnection; 81 import android.service.wallpaper.IWallpaperEngine; 82 import android.service.wallpaper.IWallpaperService; 83 import android.service.wallpaper.WallpaperService; 84 import android.system.ErrnoException; 85 import android.system.Os; 86 import android.util.EventLog; 87 import android.util.Slog; 88 import android.util.SparseArray; 89 import android.util.Xml; 90 import android.view.Display; 91 import android.view.IWindowManager; 92 import android.view.WindowManager; 93 94 import com.android.internal.R; 95 import com.android.internal.content.PackageMonitor; 96 import com.android.internal.os.BackgroundThread; 97 import com.android.internal.util.DumpUtils; 98 import com.android.internal.util.FastXmlSerializer; 99 import com.android.internal.util.JournaledFile; 100 import com.android.server.EventLogTags; 101 import com.android.server.FgThread; 102 import com.android.server.SystemService; 103 104 import java.lang.reflect.InvocationTargetException; 105 import libcore.io.IoUtils; 106 107 import org.xmlpull.v1.XmlPullParser; 108 import org.xmlpull.v1.XmlPullParserException; 109 import org.xmlpull.v1.XmlSerializer; 110 111 import java.io.BufferedOutputStream; 112 import java.io.File; 113 import java.io.FileDescriptor; 114 import java.io.FileInputStream; 115 import java.io.FileNotFoundException; 116 import java.io.FileOutputStream; 117 import java.io.IOException; 118 import java.io.InputStream; 119 import java.io.PrintWriter; 120 import java.nio.charset.StandardCharsets; 121 import java.util.ArrayList; 122 import java.util.Arrays; 123 import java.util.List; 124 import java.util.Objects; 125 import com.android.internal.R; 126 127 public class WallpaperManagerService extends IWallpaperManager.Stub 128 implements IWallpaperManagerService { 129 static final String TAG = "WallpaperManagerService"; 130 static final boolean DEBUG = false; 131 static final boolean DEBUG_LIVE = DEBUG || true; 132 133 public static class Lifecycle extends SystemService { 134 private IWallpaperManagerService mService; 135 136 public Lifecycle(Context context) { 137 super(context); 138 } 139 140 @Override 141 public void onStart() { 142 try { 143 final Class<? extends IWallpaperManagerService> klass = 144 (Class<? extends IWallpaperManagerService>)Class.forName( 145 getContext().getResources().getString( 146 R.string.config_wallpaperManagerServiceName)); 147 mService = klass.getConstructor(Context.class).newInstance(getContext()); 148 publishBinderService(Context.WALLPAPER_SERVICE, mService); 149 } catch (Exception exp) { 150 Slog.wtf(TAG, "Failed to instantiate WallpaperManagerService", exp); 151 } 152 } 153 154 @Override 155 public void onBootPhase(int phase) { 156 if (mService != null) { 157 mService.onBootPhase(phase); 158 } 159 } 160 161 @Override 162 public void onUnlockUser(int userHandle) { 163 if (mService != null) { 164 mService.onUnlockUser(userHandle); 165 } 166 } 167 } 168 169 final Object mLock = new Object(); 170 171 /** 172 * Minimum time between crashes of a wallpaper service for us to consider 173 * restarting it vs. just reverting to the static wallpaper. 174 */ 175 static final long MIN_WALLPAPER_CRASH_TIME = 10000; 176 static final int MAX_WALLPAPER_COMPONENT_LOG_LENGTH = 128; 177 static final String WALLPAPER = "wallpaper_orig"; 178 static final String WALLPAPER_CROP = "wallpaper"; 179 static final String WALLPAPER_LOCK_ORIG = "wallpaper_lock_orig"; 180 static final String WALLPAPER_LOCK_CROP = "wallpaper_lock"; 181 static final String WALLPAPER_INFO = "wallpaper_info.xml"; 182 183 // All the various per-user state files we need to be aware of 184 static final String[] sPerUserFiles = new String[] { 185 WALLPAPER, WALLPAPER_CROP, 186 WALLPAPER_LOCK_ORIG, WALLPAPER_LOCK_CROP, 187 WALLPAPER_INFO 188 }; 189 190 /** 191 * Observes the wallpaper for changes and notifies all IWallpaperServiceCallbacks 192 * that the wallpaper has changed. The CREATE is triggered when there is no 193 * wallpaper set and is created for the first time. The CLOSE_WRITE is triggered 194 * every time the wallpaper is changed. 195 */ 196 private class WallpaperObserver extends FileObserver { 197 198 final int mUserId; 199 final WallpaperData mWallpaper; 200 final File mWallpaperDir; 201 final File mWallpaperFile; 202 final File mWallpaperLockFile; 203 204 public WallpaperObserver(WallpaperData wallpaper) { 205 super(getWallpaperDir(wallpaper.userId).getAbsolutePath(), 206 CLOSE_WRITE | MOVED_TO | DELETE | DELETE_SELF); 207 mUserId = wallpaper.userId; 208 mWallpaperDir = getWallpaperDir(wallpaper.userId); 209 mWallpaper = wallpaper; 210 mWallpaperFile = new File(mWallpaperDir, WALLPAPER); 211 mWallpaperLockFile = new File(mWallpaperDir, WALLPAPER_LOCK_ORIG); 212 } 213 214 private WallpaperData dataForEvent(boolean sysChanged, boolean lockChanged) { 215 WallpaperData wallpaper = null; 216 synchronized (mLock) { 217 if (lockChanged) { 218 wallpaper = mLockWallpaperMap.get(mUserId); 219 } 220 if (wallpaper == null) { 221 // no lock-specific wallpaper exists, or sys case, handled together 222 wallpaper = mWallpaperMap.get(mUserId); 223 } 224 } 225 return (wallpaper != null) ? wallpaper : mWallpaper; 226 } 227 228 @Override 229 public void onEvent(int event, String path) { 230 if (path == null) { 231 return; 232 } 233 final boolean moved = (event == MOVED_TO); 234 final boolean written = (event == CLOSE_WRITE || moved); 235 final File changedFile = new File(mWallpaperDir, path); 236 237 // System and system+lock changes happen on the system wallpaper input file; 238 // lock-only changes happen on the dedicated lock wallpaper input file 239 final boolean sysWallpaperChanged = (mWallpaperFile.equals(changedFile)); 240 final boolean lockWallpaperChanged = (mWallpaperLockFile.equals(changedFile)); 241 int notifyColorsWhich = 0; 242 WallpaperData wallpaper = dataForEvent(sysWallpaperChanged, lockWallpaperChanged); 243 244 if (DEBUG) { 245 Slog.v(TAG, "Wallpaper file change: evt=" + event 246 + " path=" + path 247 + " sys=" + sysWallpaperChanged 248 + " lock=" + lockWallpaperChanged 249 + " imagePending=" + wallpaper.imageWallpaperPending 250 + " whichPending=0x" + Integer.toHexString(wallpaper.whichPending) 251 + " written=" + written); 252 } 253 254 if (moved && lockWallpaperChanged) { 255 // We just migrated sys -> lock to preserve imagery for an impending 256 // new system-only wallpaper. Tell keyguard about it and make sure it 257 // has the right SELinux label. 258 if (DEBUG) { 259 Slog.i(TAG, "Sys -> lock MOVED_TO"); 260 } 261 SELinux.restorecon(changedFile); 262 notifyLockWallpaperChanged(); 263 notifyWallpaperColorsChanged(wallpaper, FLAG_LOCK); 264 return; 265 } 266 267 synchronized (mLock) { 268 if (sysWallpaperChanged || lockWallpaperChanged) { 269 notifyCallbacksLocked(wallpaper); 270 if (wallpaper.wallpaperComponent == null 271 || event != CLOSE_WRITE // includes the MOVED_TO case 272 || wallpaper.imageWallpaperPending) { 273 if (written) { 274 // The image source has finished writing the source image, 275 // so we now produce the crop rect (in the background), and 276 // only publish the new displayable (sub)image as a result 277 // of that work. 278 if (DEBUG) { 279 Slog.v(TAG, "Wallpaper written; generating crop"); 280 } 281 SELinux.restorecon(changedFile); 282 if (moved) { 283 // This is a restore, so generate the crop using any just-restored new 284 // crop guidelines, making sure to preserve our local dimension hints. 285 // We also make sure to reapply the correct SELinux label. 286 if (DEBUG) { 287 Slog.v(TAG, "moved-to, therefore restore; reloading metadata"); 288 } 289 loadSettingsLocked(wallpaper.userId, true); 290 } 291 generateCrop(wallpaper); 292 if (DEBUG) { 293 Slog.v(TAG, "Crop done; invoking completion callback"); 294 } 295 wallpaper.imageWallpaperPending = false; 296 if (sysWallpaperChanged) { 297 // If this was the system wallpaper, rebind... 298 bindWallpaperComponentLocked(mImageWallpaper, true, 299 false, wallpaper, null); 300 notifyColorsWhich |= FLAG_SYSTEM; 301 } 302 if (lockWallpaperChanged 303 || (wallpaper.whichPending & FLAG_LOCK) != 0) { 304 if (DEBUG) { 305 Slog.i(TAG, "Lock-relevant wallpaper changed"); 306 } 307 // either a lock-only wallpaper commit or a system+lock event. 308 // if it's system-plus-lock we need to wipe the lock bookkeeping; 309 // we're falling back to displaying the system wallpaper there. 310 if (!lockWallpaperChanged) { 311 mLockWallpaperMap.remove(wallpaper.userId); 312 } 313 // and in any case, tell keyguard about it 314 notifyLockWallpaperChanged(); 315 notifyColorsWhich |= FLAG_LOCK; 316 } 317 318 saveSettingsLocked(wallpaper.userId); 319 320 // Publish completion *after* we've persisted the changes 321 if (wallpaper.setComplete != null) { 322 try { 323 wallpaper.setComplete.onWallpaperChanged(); 324 } catch (RemoteException e) { 325 // if this fails we don't really care; the setting app may just 326 // have crashed and that sort of thing is a fact of life. 327 } 328 } 329 } 330 } 331 } 332 } 333 334 // Outside of the lock since it will synchronize itself 335 if (notifyColorsWhich != 0) { 336 notifyWallpaperColorsChanged(wallpaper, notifyColorsWhich); 337 } 338 } 339 } 340 341 /** 342 * Observes changes of theme settings. It will check whether to call 343 * notifyWallpaperColorsChanged by the current theme and updated theme. 344 * The light theme and dark theme are controlled by the hint values in Wallpaper colors, 345 * threrfore, if light theme mode is chosen, HINT_SUPPORTS_DARK_THEME in hint will be 346 * removed and then notify listeners. 347 */ 348 private class ThemeSettingsObserver extends ContentObserver { 349 350 public ThemeSettingsObserver(Handler handler) { 351 super(handler); 352 } 353 354 public void startObserving(Context context) { 355 context.getContentResolver().registerContentObserver( 356 Settings.Secure.getUriFor(Settings.Secure.THEME_MODE), 357 false, 358 this); 359 } 360 361 public void stopObserving(Context context) { 362 context.getContentResolver().unregisterContentObserver(this); 363 } 364 365 @Override 366 public void onChange(boolean selfChange) { 367 onThemeSettingsChanged(); 368 } 369 } 370 371 /** 372 * Check whether to call notifyWallpaperColorsChanged. Assumed that the theme mode 373 * was wallpaper theme mode and dark wallpaper was set, therefoe, the theme was dark. 374 * Then theme mode changing to dark theme mode, however, theme should not update since 375 * theme was dark already. 376 */ 377 private boolean needUpdateLocked(WallpaperColors colors, int themeMode) { 378 if (colors == null) { 379 return false; 380 } 381 382 if (themeMode == mThemeMode) { 383 return false; 384 } 385 386 boolean result = true; 387 boolean supportDarkTheme = 388 (colors.getColorHints() & WallpaperColors.HINT_SUPPORTS_DARK_THEME) != 0; 389 switch (themeMode) { 390 case Settings.Secure.THEME_MODE_WALLPAPER: 391 if (mThemeMode == Settings.Secure.THEME_MODE_LIGHT) { 392 result = supportDarkTheme; 393 } else { 394 result = !supportDarkTheme; 395 } 396 break; 397 case Settings.Secure.THEME_MODE_LIGHT: 398 if (mThemeMode == Settings.Secure.THEME_MODE_WALLPAPER) { 399 result = supportDarkTheme; 400 } 401 break; 402 case Settings.Secure.THEME_MODE_DARK: 403 if (mThemeMode == Settings.Secure.THEME_MODE_WALLPAPER) { 404 result = !supportDarkTheme; 405 } 406 break; 407 default: 408 Slog.w(TAG, "unkonwn theme mode " + themeMode); 409 return false; 410 } 411 mThemeMode = themeMode; 412 return result; 413 } 414 415 void onThemeSettingsChanged() { 416 WallpaperData wallpaper; 417 synchronized (mLock) { 418 wallpaper = mWallpaperMap.get(mCurrentUserId); 419 int updatedThemeMode = Settings.Secure.getInt( 420 mContext.getContentResolver(), Settings.Secure.THEME_MODE, 421 Settings.Secure.THEME_MODE_WALLPAPER); 422 423 if (DEBUG) { 424 Slog.v(TAG, "onThemeSettingsChanged, mode = " + updatedThemeMode); 425 } 426 427 if (!needUpdateLocked(wallpaper.primaryColors, updatedThemeMode)) { 428 return; 429 } 430 } 431 432 if (wallpaper != null) { 433 notifyWallpaperColorsChanged(wallpaper, FLAG_SYSTEM); 434 } 435 } 436 437 void notifyLockWallpaperChanged() { 438 final IWallpaperManagerCallback cb = mKeyguardListener; 439 if (cb != null) { 440 try { 441 cb.onWallpaperChanged(); 442 } catch (RemoteException e) { 443 // Oh well it went away; no big deal 444 } 445 } 446 } 447 448 private void notifyWallpaperColorsChanged(@NonNull WallpaperData wallpaper, int which) { 449 boolean needsExtraction; 450 synchronized (mLock) { 451 final RemoteCallbackList<IWallpaperManagerCallback> currentUserColorListeners = 452 mColorsChangedListeners.get(wallpaper.userId); 453 final RemoteCallbackList<IWallpaperManagerCallback> userAllColorListeners = 454 mColorsChangedListeners.get(UserHandle.USER_ALL); 455 // No-op until someone is listening to it. 456 if (emptyCallbackList(currentUserColorListeners) && 457 emptyCallbackList(userAllColorListeners)) { 458 return; 459 } 460 461 if (DEBUG) { 462 Slog.v(TAG, "notifyWallpaperColorsChanged " + which); 463 } 464 465 needsExtraction = wallpaper.primaryColors == null; 466 } 467 468 // Let's notify the current values, it's fine if it's null, it just means 469 // that we don't know yet. 470 notifyColorListeners(wallpaper.primaryColors, which, wallpaper.userId); 471 472 if (needsExtraction) { 473 extractColors(wallpaper); 474 synchronized (mLock) { 475 // Don't need to notify if nothing changed. 476 if (wallpaper.primaryColors == null) { 477 return; 478 } 479 } 480 notifyColorListeners(wallpaper.primaryColors, which, wallpaper.userId); 481 } 482 } 483 484 private static <T extends IInterface> boolean emptyCallbackList(RemoteCallbackList<T> list) { 485 return (list == null || list.getRegisteredCallbackCount() == 0); 486 } 487 488 private void notifyColorListeners(@NonNull WallpaperColors wallpaperColors, int which, 489 int userId) { 490 final IWallpaperManagerCallback keyguardListener; 491 final ArrayList<IWallpaperManagerCallback> colorListeners = new ArrayList<>(); 492 synchronized (mLock) { 493 final RemoteCallbackList<IWallpaperManagerCallback> currentUserColorListeners = 494 mColorsChangedListeners.get(userId); 495 final RemoteCallbackList<IWallpaperManagerCallback> userAllColorListeners = 496 mColorsChangedListeners.get(UserHandle.USER_ALL); 497 keyguardListener = mKeyguardListener; 498 499 if (currentUserColorListeners != null) { 500 final int count = currentUserColorListeners.beginBroadcast(); 501 for (int i = 0; i < count; i++) { 502 colorListeners.add(currentUserColorListeners.getBroadcastItem(i)); 503 } 504 currentUserColorListeners.finishBroadcast(); 505 } 506 507 if (userAllColorListeners != null) { 508 final int count = userAllColorListeners.beginBroadcast(); 509 for (int i = 0; i < count; i++) { 510 colorListeners.add(userAllColorListeners.getBroadcastItem(i)); 511 } 512 userAllColorListeners.finishBroadcast(); 513 } 514 wallpaperColors = getThemeColorsLocked(wallpaperColors); 515 } 516 517 final int count = colorListeners.size(); 518 for (int i = 0; i < count; i++) { 519 try { 520 colorListeners.get(i).onWallpaperColorsChanged(wallpaperColors, which, userId); 521 } catch (RemoteException e) { 522 // Callback is gone, it's not necessary to unregister it since 523 // RemoteCallbackList#getBroadcastItem will take care of it. 524 } 525 } 526 527 if (keyguardListener != null) { 528 try { 529 keyguardListener.onWallpaperColorsChanged(wallpaperColors, which, userId); 530 } catch (RemoteException e) { 531 // Oh well it went away; no big deal 532 } 533 } 534 } 535 536 /** 537 * We can easily extract colors from an ImageWallpaper since it's only a bitmap. 538 * In this case, using the crop is more than enough. Live wallpapers are just ignored. 539 * 540 * @param wallpaper a wallpaper representation 541 */ 542 private void extractColors(WallpaperData wallpaper) { 543 String cropFile = null; 544 int wallpaperId; 545 546 synchronized (mLock) { 547 // Not having a wallpaperComponent means it's a lock screen wallpaper. 548 final boolean imageWallpaper = mImageWallpaper.equals(wallpaper.wallpaperComponent) 549 || wallpaper.wallpaperComponent == null; 550 if (imageWallpaper && wallpaper.cropFile != null && wallpaper.cropFile.exists()) { 551 cropFile = wallpaper.cropFile.getAbsolutePath(); 552 } 553 wallpaperId = wallpaper.wallpaperId; 554 } 555 556 WallpaperColors colors = null; 557 if (cropFile != null) { 558 Bitmap bitmap = BitmapFactory.decodeFile(cropFile); 559 if (bitmap != null) { 560 colors = WallpaperColors.fromBitmap(bitmap); 561 bitmap.recycle(); 562 } 563 } 564 565 if (colors == null) { 566 Slog.w(TAG, "Cannot extract colors because wallpaper could not be read."); 567 return; 568 } 569 570 synchronized (mLock) { 571 if (wallpaper.wallpaperId == wallpaperId) { 572 wallpaper.primaryColors = colors; 573 // Now that we have the colors, let's save them into the xml 574 // to avoid having to run this again. 575 saveSettingsLocked(wallpaper.userId); 576 } else { 577 Slog.w(TAG, "Not setting primary colors since wallpaper changed"); 578 } 579 } 580 } 581 582 /** 583 * We can easily change theme by modified colors hint. This function will check 584 * current theme mode and return the WallpaperColors fit current theme mode. 585 * If color need modified, it will return a copied WallpaperColors which 586 * its ColorsHint is modified to fit current theme mode. 587 * 588 * @param colors a wallpaper primary colors representation 589 */ 590 private WallpaperColors getThemeColorsLocked(WallpaperColors colors) { 591 if (colors == null) { 592 Slog.w(TAG, "Cannot get theme colors because WallpaperColors is null."); 593 return null; 594 } 595 596 int colorHints = colors.getColorHints(); 597 boolean supportDarkTheme = (colorHints & WallpaperColors.HINT_SUPPORTS_DARK_THEME) != 0; 598 if (mThemeMode == Settings.Secure.THEME_MODE_WALLPAPER || 599 (mThemeMode == Settings.Secure.THEME_MODE_LIGHT && !supportDarkTheme) || 600 (mThemeMode == Settings.Secure.THEME_MODE_DARK && supportDarkTheme)) { 601 return colors; 602 } 603 604 WallpaperColors themeColors = new WallpaperColors(colors.getPrimaryColor(), 605 colors.getSecondaryColor(), colors.getTertiaryColor()); 606 607 if (mThemeMode == Settings.Secure.THEME_MODE_LIGHT) { 608 colorHints &= ~WallpaperColors.HINT_SUPPORTS_DARK_THEME; 609 } else if (mThemeMode == Settings.Secure.THEME_MODE_DARK) { 610 colorHints |= WallpaperColors.HINT_SUPPORTS_DARK_THEME; 611 } 612 themeColors.setColorHints(colorHints); 613 return themeColors; 614 } 615 616 /** 617 * Once a new wallpaper has been written via setWallpaper(...), it needs to be cropped 618 * for display. 619 */ 620 private void generateCrop(WallpaperData wallpaper) { 621 boolean success = false; 622 623 Rect cropHint = new Rect(wallpaper.cropHint); 624 625 if (DEBUG) { 626 Slog.v(TAG, "Generating crop for new wallpaper(s): 0x" 627 + Integer.toHexString(wallpaper.whichPending) 628 + " to " + wallpaper.cropFile.getName() 629 + " crop=(" + cropHint.width() + 'x' + cropHint.height() 630 + ") dim=(" + wallpaper.width + 'x' + wallpaper.height + ')'); 631 } 632 633 // Analyse the source; needed in multiple cases 634 BitmapFactory.Options options = new BitmapFactory.Options(); 635 options.inJustDecodeBounds = true; 636 BitmapFactory.decodeFile(wallpaper.wallpaperFile.getAbsolutePath(), options); 637 if (options.outWidth <= 0 || options.outHeight <= 0) { 638 Slog.w(TAG, "Invalid wallpaper data"); 639 success = false; 640 } else { 641 boolean needCrop = false; 642 boolean needScale = false; 643 644 // Empty crop means use the full image 645 if (cropHint.isEmpty()) { 646 cropHint.left = cropHint.top = 0; 647 cropHint.right = options.outWidth; 648 cropHint.bottom = options.outHeight; 649 } else { 650 // force the crop rect to lie within the measured bounds 651 cropHint.offset( 652 (cropHint.right > options.outWidth ? options.outWidth - cropHint.right : 0), 653 (cropHint.bottom > options.outHeight ? options.outHeight - cropHint.bottom : 0)); 654 655 // If the crop hint was larger than the image we just overshot. Patch things up. 656 if (cropHint.left < 0) { 657 cropHint.left = 0; 658 } 659 if (cropHint.top < 0) { 660 cropHint.top = 0; 661 } 662 663 // Don't bother cropping if what we're left with is identity 664 needCrop = (options.outHeight > cropHint.height() 665 || options.outWidth > cropHint.width()); 666 } 667 668 // scale if the crop height winds up not matching the recommended metrics 669 needScale = (wallpaper.height != cropHint.height()); 670 671 if (DEBUG) { 672 Slog.v(TAG, "crop: w=" + cropHint.width() + " h=" + cropHint.height()); 673 Slog.v(TAG, "dims: w=" + wallpaper.width + " h=" + wallpaper.height); 674 Slog.v(TAG, "meas: w=" + options.outWidth + " h=" + options.outHeight); 675 Slog.v(TAG, "crop?=" + needCrop + " scale?=" + needScale); 676 } 677 678 if (!needCrop && !needScale) { 679 // Simple case: the nominal crop fits what we want, so we take 680 // the whole thing and just copy the image file directly. 681 if (DEBUG) { 682 Slog.v(TAG, "Null crop of new wallpaper; copying"); 683 } 684 success = FileUtils.copyFile(wallpaper.wallpaperFile, wallpaper.cropFile); 685 if (!success) { 686 wallpaper.cropFile.delete(); 687 // TODO: fall back to default wallpaper in this case 688 } 689 } else { 690 // Fancy case: crop and scale. First, we decode and scale down if appropriate. 691 FileOutputStream f = null; 692 BufferedOutputStream bos = null; 693 try { 694 BitmapRegionDecoder decoder = BitmapRegionDecoder.newInstance( 695 wallpaper.wallpaperFile.getAbsolutePath(), false); 696 697 // This actually downsamples only by powers of two, but that's okay; we do 698 // a proper scaling blit later. This is to minimize transient RAM use. 699 // We calculate the largest power-of-two under the actual ratio rather than 700 // just let the decode take care of it because we also want to remap where the 701 // cropHint rectangle lies in the decoded [super]rect. 702 final BitmapFactory.Options scaler; 703 final int actualScale = cropHint.height() / wallpaper.height; 704 int scale = 1; 705 while (2*scale < actualScale) { 706 scale *= 2; 707 } 708 if (scale > 1) { 709 scaler = new BitmapFactory.Options(); 710 scaler.inSampleSize = scale; 711 if (DEBUG) { 712 Slog.v(TAG, "Downsampling cropped rect with scale " + scale); 713 } 714 } else { 715 scaler = null; 716 } 717 Bitmap cropped = decoder.decodeRegion(cropHint, scaler); 718 decoder.recycle(); 719 720 if (cropped == null) { 721 Slog.e(TAG, "Could not decode new wallpaper"); 722 } else { 723 // We've got the extracted crop; now we want to scale it properly to 724 // the desired rectangle. That's a height-biased operation: make it 725 // fit the hinted height, and accept whatever width we end up with. 726 cropHint.offsetTo(0, 0); 727 cropHint.right /= scale; // adjust by downsampling factor 728 cropHint.bottom /= scale; 729 final float heightR = ((float)wallpaper.height) / ((float)cropHint.height()); 730 if (DEBUG) { 731 Slog.v(TAG, "scale " + heightR + ", extracting " + cropHint); 732 } 733 final int destWidth = (int)(cropHint.width() * heightR); 734 final Bitmap finalCrop = Bitmap.createScaledBitmap(cropped, 735 destWidth, wallpaper.height, true); 736 if (DEBUG) { 737 Slog.v(TAG, "Final extract:"); 738 Slog.v(TAG, " dims: w=" + wallpaper.width 739 + " h=" + wallpaper.height); 740 Slog.v(TAG, " out: w=" + finalCrop.getWidth() 741 + " h=" + finalCrop.getHeight()); 742 } 743 744 f = new FileOutputStream(wallpaper.cropFile); 745 bos = new BufferedOutputStream(f, 32*1024); 746 finalCrop.compress(Bitmap.CompressFormat.JPEG, 100, bos); 747 bos.flush(); // don't rely on the implicit flush-at-close when noting success 748 success = true; 749 } 750 } catch (Exception e) { 751 if (DEBUG) { 752 Slog.e(TAG, "Error decoding crop", e); 753 } 754 } finally { 755 IoUtils.closeQuietly(bos); 756 IoUtils.closeQuietly(f); 757 } 758 } 759 } 760 761 if (!success) { 762 Slog.e(TAG, "Unable to apply new wallpaper"); 763 wallpaper.cropFile.delete(); 764 } 765 766 if (wallpaper.cropFile.exists()) { 767 boolean didRestorecon = SELinux.restorecon(wallpaper.cropFile.getAbsoluteFile()); 768 if (DEBUG) { 769 Slog.v(TAG, "restorecon() of crop file returned " + didRestorecon); 770 } 771 } 772 } 773 774 final Context mContext; 775 final IWindowManager mIWindowManager; 776 final IPackageManager mIPackageManager; 777 final MyPackageMonitor mMonitor; 778 final AppOpsManager mAppOpsManager; 779 /** 780 * Map of color listeners per user id. 781 * The key will be the id of a user or UserHandle.USER_ALL - for wildcard listeners. 782 */ 783 final SparseArray<RemoteCallbackList<IWallpaperManagerCallback>> mColorsChangedListeners; 784 WallpaperData mLastWallpaper; 785 IWallpaperManagerCallback mKeyguardListener; 786 boolean mWaitingForUnlock; 787 boolean mShuttingDown; 788 789 /** 790 * ID of the current wallpaper, changed every time anything sets a wallpaper. 791 * This is used for external detection of wallpaper update activity. 792 */ 793 int mWallpaperId; 794 795 /** 796 * Name of the component used to display bitmap wallpapers from either the gallery or 797 * built-in wallpapers. 798 */ 799 final ComponentName mImageWallpaper; 800 801 /** 802 * Name of the default wallpaper component; might be different from mImageWallpaper 803 */ 804 final ComponentName mDefaultWallpaperComponent; 805 806 final SparseArray<WallpaperData> mWallpaperMap = new SparseArray<WallpaperData>(); 807 final SparseArray<WallpaperData> mLockWallpaperMap = new SparseArray<WallpaperData>(); 808 809 final SparseArray<Boolean> mUserRestorecon = new SparseArray<Boolean>(); 810 int mCurrentUserId = UserHandle.USER_NULL; 811 boolean mInAmbientMode; 812 int mThemeMode; 813 814 static class WallpaperData { 815 816 int userId; 817 818 final File wallpaperFile; // source image 819 final File cropFile; // eventual destination 820 821 /** 822 * True while the client is writing a new wallpaper 823 */ 824 boolean imageWallpaperPending; 825 826 /** 827 * Which new wallpapers are being written; mirrors the 'which' 828 * selector bit field to setWallpaper(). 829 */ 830 int whichPending; 831 832 /** 833 * Callback once the set + crop is finished 834 */ 835 IWallpaperManagerCallback setComplete; 836 837 /** 838 * Is the OS allowed to back up this wallpaper imagery? 839 */ 840 boolean allowBackup; 841 842 /** 843 * Resource name if using a picture from the wallpaper gallery 844 */ 845 String name = ""; 846 847 /** 848 * The component name of the currently set live wallpaper. 849 */ 850 ComponentName wallpaperComponent; 851 852 /** 853 * The component name of the wallpaper that should be set next. 854 */ 855 ComponentName nextWallpaperComponent; 856 857 /** 858 * The ID of this wallpaper 859 */ 860 int wallpaperId; 861 862 /** 863 * Primary colors histogram 864 */ 865 WallpaperColors primaryColors; 866 867 WallpaperConnection connection; 868 long lastDiedTime; 869 boolean wallpaperUpdating; 870 WallpaperObserver wallpaperObserver; 871 ThemeSettingsObserver themeSettingsObserver; 872 873 /** 874 * List of callbacks registered they should each be notified when the wallpaper is changed. 875 */ 876 private RemoteCallbackList<IWallpaperManagerCallback> callbacks 877 = new RemoteCallbackList<IWallpaperManagerCallback>(); 878 879 int width = -1; 880 int height = -1; 881 882 /** 883 * The crop hint supplied for displaying a subset of the source image 884 */ 885 final Rect cropHint = new Rect(0, 0, 0, 0); 886 887 final Rect padding = new Rect(0, 0, 0, 0); 888 889 WallpaperData(int userId, String inputFileName, String cropFileName) { 890 this.userId = userId; 891 final File wallpaperDir = getWallpaperDir(userId); 892 wallpaperFile = new File(wallpaperDir, inputFileName); 893 cropFile = new File(wallpaperDir, cropFileName); 894 } 895 896 // Called during initialization of a given user's wallpaper bookkeeping 897 boolean cropExists() { 898 return cropFile.exists(); 899 } 900 901 boolean sourceExists() { 902 return wallpaperFile.exists(); 903 } 904 } 905 906 int makeWallpaperIdLocked() { 907 do { 908 ++mWallpaperId; 909 } while (mWallpaperId == 0); 910 return mWallpaperId; 911 } 912 913 class WallpaperConnection extends IWallpaperConnection.Stub 914 implements ServiceConnection { 915 916 /** Time in milliseconds until we expect the wallpaper to reconnect (unless we're in the 917 * middle of an update). If exceeded, the wallpaper gets reset to the system default. */ 918 private static final long WALLPAPER_RECONNECT_TIMEOUT_MS = 10000; 919 920 final WallpaperInfo mInfo; 921 final Binder mToken = new Binder(); 922 IWallpaperService mService; 923 IWallpaperEngine mEngine; 924 WallpaperData mWallpaper; 925 IRemoteCallback mReply; 926 927 boolean mDimensionsChanged = false; 928 boolean mPaddingChanged = false; 929 930 private Runnable mResetRunnable = () -> { 931 synchronized (mLock) { 932 if (mShuttingDown) { 933 // Don't expect wallpaper services to relaunch during shutdown 934 if (DEBUG_LIVE) { 935 Slog.i(TAG, "Ignoring relaunch timeout during shutdown"); 936 } 937 return; 938 } 939 940 if (!mWallpaper.wallpaperUpdating 941 && mWallpaper.userId == mCurrentUserId) { 942 Slog.w(TAG, "Wallpaper reconnect timed out for " + mWallpaper.wallpaperComponent 943 + ", reverting to built-in wallpaper!"); 944 clearWallpaperLocked(true, FLAG_SYSTEM, mWallpaper.userId, 945 null); 946 } 947 } 948 }; 949 950 public WallpaperConnection(WallpaperInfo info, WallpaperData wallpaper) { 951 mInfo = info; 952 mWallpaper = wallpaper; 953 } 954 955 @Override 956 public void onServiceConnected(ComponentName name, IBinder service) { 957 synchronized (mLock) { 958 if (mWallpaper.connection == this) { 959 mService = IWallpaperService.Stub.asInterface(service); 960 attachServiceLocked(this, mWallpaper); 961 // XXX should probably do saveSettingsLocked() later 962 // when we have an engine, but I'm not sure about 963 // locking there and anyway we always need to be able to 964 // recover if there is something wrong. 965 saveSettingsLocked(mWallpaper.userId); 966 FgThread.getHandler().removeCallbacks(mResetRunnable); 967 } 968 } 969 } 970 971 @Override 972 public void onServiceDisconnected(ComponentName name) { 973 synchronized (mLock) { 974 Slog.w(TAG, "Wallpaper service gone: " + name); 975 if (!Objects.equals(name, mWallpaper.wallpaperComponent)) { 976 Slog.e(TAG, "Does not match expected wallpaper component " 977 + mWallpaper.wallpaperComponent); 978 } 979 mService = null; 980 mEngine = null; 981 if (mWallpaper.connection == this) { 982 // There is an inherent ordering race between this callback and the 983 // package monitor that receives notice that a package is being updated, 984 // so we cannot quite trust at this moment that we know for sure that 985 // this is not an update. If we think this is a genuine non-update 986 // wallpaper outage, we do our "wait for reset" work as a continuation, 987 // a short time in the future, specifically to allow any pending package 988 // update message on this same looper thread to be processed. 989 if (!mWallpaper.wallpaperUpdating) { 990 mContext.getMainThreadHandler().postDelayed(() -> processDisconnect(this), 991 1000); 992 } 993 } 994 } 995 } 996 997 public void scheduleTimeoutLocked() { 998 // If we didn't reset it right away, do so after we couldn't connect to 999 // it for an extended amount of time to avoid having a black wallpaper. 1000 final Handler fgHandler = FgThread.getHandler(); 1001 fgHandler.removeCallbacks(mResetRunnable); 1002 fgHandler.postDelayed(mResetRunnable, WALLPAPER_RECONNECT_TIMEOUT_MS); 1003 if (DEBUG_LIVE) { 1004 Slog.i(TAG, "Started wallpaper reconnect timeout for " + mWallpaper.wallpaperComponent); 1005 } 1006 } 1007 1008 private void processDisconnect(final ServiceConnection connection) { 1009 synchronized (mLock) { 1010 // The wallpaper disappeared. If this isn't a system-default one, track 1011 // crashes and fall back to default if it continues to misbehave. 1012 if (connection == mWallpaper.connection) { 1013 final ComponentName wpService = mWallpaper.wallpaperComponent; 1014 if (!mWallpaper.wallpaperUpdating 1015 && mWallpaper.userId == mCurrentUserId 1016 && !Objects.equals(mDefaultWallpaperComponent, wpService) 1017 && !Objects.equals(mImageWallpaper, wpService)) { 1018 // There is a race condition which causes 1019 // {@link #mWallpaper.wallpaperUpdating} to be false even if it is 1020 // currently updating since the broadcast notifying us is async. 1021 // This race is overcome by the general rule that we only reset the 1022 // wallpaper if its service was shut down twice 1023 // during {@link #MIN_WALLPAPER_CRASH_TIME} millis. 1024 if (mWallpaper.lastDiedTime != 0 1025 && mWallpaper.lastDiedTime + MIN_WALLPAPER_CRASH_TIME 1026 > SystemClock.uptimeMillis()) { 1027 Slog.w(TAG, "Reverting to built-in wallpaper!"); 1028 clearWallpaperLocked(true, FLAG_SYSTEM, mWallpaper.userId, null); 1029 } else { 1030 mWallpaper.lastDiedTime = SystemClock.uptimeMillis(); 1031 1032 clearWallpaperComponentLocked(mWallpaper); 1033 if (bindWallpaperComponentLocked( 1034 wpService, false, false, mWallpaper, null)) { 1035 mWallpaper.connection.scheduleTimeoutLocked(); 1036 } else { 1037 Slog.w(TAG, "Reverting to built-in wallpaper!"); 1038 clearWallpaperLocked(true, FLAG_SYSTEM, mWallpaper.userId, null); 1039 } 1040 } 1041 final String flattened = wpService.flattenToString(); 1042 EventLog.writeEvent(EventLogTags.WP_WALLPAPER_CRASHED, 1043 flattened.substring(0, Math.min(flattened.length(), 1044 MAX_WALLPAPER_COMPONENT_LOG_LENGTH))); 1045 } 1046 } else { 1047 if (DEBUG_LIVE) { 1048 Slog.i(TAG, "Wallpaper changed during disconnect tracking; ignoring"); 1049 } 1050 } 1051 } 1052 } 1053 1054 /** 1055 * Called by a live wallpaper if its colors have changed. 1056 * @param primaryColors representation of wallpaper primary colors 1057 */ 1058 @Override 1059 public void onWallpaperColorsChanged(WallpaperColors primaryColors) { 1060 int which; 1061 synchronized (mLock) { 1062 // Do not broadcast changes on ImageWallpaper since it's handled 1063 // internally by this class. 1064 if (mImageWallpaper.equals(mWallpaper.wallpaperComponent)) { 1065 return; 1066 } 1067 1068 mWallpaper.primaryColors = primaryColors; 1069 1070 // Live wallpapers always are system wallpapers. 1071 which = FLAG_SYSTEM; 1072 // It's also the lock screen wallpaper when we don't have a bitmap in there 1073 WallpaperData lockedWallpaper = mLockWallpaperMap.get(mWallpaper.userId); 1074 if (lockedWallpaper == null) { 1075 which |= FLAG_LOCK; 1076 } 1077 } 1078 if (which != 0) { 1079 notifyWallpaperColorsChanged(mWallpaper, which); 1080 } 1081 } 1082 1083 @Override 1084 public void attachEngine(IWallpaperEngine engine) { 1085 synchronized (mLock) { 1086 mEngine = engine; 1087 if (mDimensionsChanged) { 1088 try { 1089 mEngine.setDesiredSize(mWallpaper.width, mWallpaper.height); 1090 } catch (RemoteException e) { 1091 Slog.w(TAG, "Failed to set wallpaper dimensions", e); 1092 } 1093 mDimensionsChanged = false; 1094 } 1095 if (mPaddingChanged) { 1096 try { 1097 mEngine.setDisplayPadding(mWallpaper.padding); 1098 } catch (RemoteException e) { 1099 Slog.w(TAG, "Failed to set wallpaper padding", e); 1100 } 1101 mPaddingChanged = false; 1102 } 1103 if (mInfo != null && mInfo.getSupportsAmbientMode()) { 1104 try { 1105 mEngine.setInAmbientMode(mInAmbientMode, false /* animated */); 1106 } catch (RemoteException e) { 1107 Slog.w(TAG, "Failed to set ambient mode state", e); 1108 } 1109 } 1110 try { 1111 // This will trigger onComputeColors in the wallpaper engine. 1112 // It's fine to be locked in here since the binder is oneway. 1113 mEngine.requestWallpaperColors(); 1114 } catch (RemoteException e) { 1115 Slog.w(TAG, "Failed to request wallpaper colors", e); 1116 } 1117 } 1118 } 1119 1120 @Override 1121 public void engineShown(IWallpaperEngine engine) { 1122 synchronized (mLock) { 1123 if (mReply != null) { 1124 long ident = Binder.clearCallingIdentity(); 1125 try { 1126 mReply.sendResult(null); 1127 } catch (RemoteException e) { 1128 Binder.restoreCallingIdentity(ident); 1129 } 1130 mReply = null; 1131 } 1132 } 1133 } 1134 1135 @Override 1136 public ParcelFileDescriptor setWallpaper(String name) { 1137 synchronized (mLock) { 1138 if (mWallpaper.connection == this) { 1139 return updateWallpaperBitmapLocked(name, mWallpaper, null); 1140 } 1141 return null; 1142 } 1143 } 1144 } 1145 1146 class MyPackageMonitor extends PackageMonitor { 1147 @Override 1148 public void onPackageUpdateFinished(String packageName, int uid) { 1149 synchronized (mLock) { 1150 if (mCurrentUserId != getChangingUserId()) { 1151 return; 1152 } 1153 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 1154 if (wallpaper != null) { 1155 final ComponentName wpService = wallpaper.wallpaperComponent; 1156 if (wpService != null && wpService.getPackageName().equals(packageName)) { 1157 if (DEBUG_LIVE) { 1158 Slog.i(TAG, "Wallpaper " + wpService + " update has finished"); 1159 } 1160 wallpaper.wallpaperUpdating = false; 1161 clearWallpaperComponentLocked(wallpaper); 1162 if (!bindWallpaperComponentLocked(wpService, false, false, 1163 wallpaper, null)) { 1164 Slog.w(TAG, "Wallpaper " + wpService 1165 + " no longer available; reverting to default"); 1166 clearWallpaperLocked(false, FLAG_SYSTEM, wallpaper.userId, null); 1167 } 1168 } 1169 } 1170 } 1171 } 1172 1173 @Override 1174 public void onPackageModified(String packageName) { 1175 synchronized (mLock) { 1176 if (mCurrentUserId != getChangingUserId()) { 1177 return; 1178 } 1179 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 1180 if (wallpaper != null) { 1181 if (wallpaper.wallpaperComponent == null 1182 || !wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 1183 return; 1184 } 1185 doPackagesChangedLocked(true, wallpaper); 1186 } 1187 } 1188 } 1189 1190 @Override 1191 public void onPackageUpdateStarted(String packageName, int uid) { 1192 synchronized (mLock) { 1193 if (mCurrentUserId != getChangingUserId()) { 1194 return; 1195 } 1196 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 1197 if (wallpaper != null) { 1198 if (wallpaper.wallpaperComponent != null 1199 && wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { 1200 if (DEBUG_LIVE) { 1201 Slog.i(TAG, "Wallpaper service " + wallpaper.wallpaperComponent 1202 + " is updating"); 1203 } 1204 wallpaper.wallpaperUpdating = true; 1205 if (wallpaper.connection != null) { 1206 FgThread.getHandler().removeCallbacks( 1207 wallpaper.connection.mResetRunnable); 1208 } 1209 } 1210 } 1211 } 1212 } 1213 1214 @Override 1215 public boolean onHandleForceStop(Intent intent, String[] packages, int uid, boolean doit) { 1216 synchronized (mLock) { 1217 boolean changed = false; 1218 if (mCurrentUserId != getChangingUserId()) { 1219 return false; 1220 } 1221 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 1222 if (wallpaper != null) { 1223 boolean res = doPackagesChangedLocked(doit, wallpaper); 1224 changed |= res; 1225 } 1226 return changed; 1227 } 1228 } 1229 1230 @Override 1231 public void onSomePackagesChanged() { 1232 synchronized (mLock) { 1233 if (mCurrentUserId != getChangingUserId()) { 1234 return; 1235 } 1236 WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); 1237 if (wallpaper != null) { 1238 doPackagesChangedLocked(true, wallpaper); 1239 } 1240 } 1241 } 1242 1243 boolean doPackagesChangedLocked(boolean doit, WallpaperData wallpaper) { 1244 boolean changed = false; 1245 if (wallpaper.wallpaperComponent != null) { 1246 int change = isPackageDisappearing(wallpaper.wallpaperComponent 1247 .getPackageName()); 1248 if (change == PACKAGE_PERMANENT_CHANGE 1249 || change == PACKAGE_TEMPORARY_CHANGE) { 1250 changed = true; 1251 if (doit) { 1252 Slog.w(TAG, "Wallpaper uninstalled, removing: " 1253 + wallpaper.wallpaperComponent); 1254 clearWallpaperLocked(false, FLAG_SYSTEM, wallpaper.userId, null); 1255 } 1256 } 1257 } 1258 if (wallpaper.nextWallpaperComponent != null) { 1259 int change = isPackageDisappearing(wallpaper.nextWallpaperComponent 1260 .getPackageName()); 1261 if (change == PACKAGE_PERMANENT_CHANGE 1262 || change == PACKAGE_TEMPORARY_CHANGE) { 1263 wallpaper.nextWallpaperComponent = null; 1264 } 1265 } 1266 if (wallpaper.wallpaperComponent != null 1267 && isPackageModified(wallpaper.wallpaperComponent.getPackageName())) { 1268 try { 1269 mContext.getPackageManager().getServiceInfo(wallpaper.wallpaperComponent, 1270 PackageManager.MATCH_DIRECT_BOOT_AWARE 1271 | PackageManager.MATCH_DIRECT_BOOT_UNAWARE); 1272 } catch (NameNotFoundException e) { 1273 Slog.w(TAG, "Wallpaper component gone, removing: " 1274 + wallpaper.wallpaperComponent); 1275 clearWallpaperLocked(false, FLAG_SYSTEM, wallpaper.userId, null); 1276 } 1277 } 1278 if (wallpaper.nextWallpaperComponent != null 1279 && isPackageModified(wallpaper.nextWallpaperComponent.getPackageName())) { 1280 try { 1281 mContext.getPackageManager().getServiceInfo(wallpaper.nextWallpaperComponent, 1282 PackageManager.MATCH_DIRECT_BOOT_AWARE 1283 | PackageManager.MATCH_DIRECT_BOOT_UNAWARE); 1284 } catch (NameNotFoundException e) { 1285 wallpaper.nextWallpaperComponent = null; 1286 } 1287 } 1288 return changed; 1289 } 1290 } 1291 1292 public WallpaperManagerService(Context context) { 1293 if (DEBUG) Slog.v(TAG, "WallpaperService startup"); 1294 mContext = context; 1295 mShuttingDown = false; 1296 mImageWallpaper = ComponentName.unflattenFromString( 1297 context.getResources().getString(R.string.image_wallpaper_component)); 1298 mDefaultWallpaperComponent = WallpaperManager.getDefaultWallpaperComponent(context); 1299 mIWindowManager = IWindowManager.Stub.asInterface( 1300 ServiceManager.getService(Context.WINDOW_SERVICE)); 1301 mIPackageManager = AppGlobals.getPackageManager(); 1302 mAppOpsManager = (AppOpsManager) mContext.getSystemService(Context.APP_OPS_SERVICE); 1303 mMonitor = new MyPackageMonitor(); 1304 mColorsChangedListeners = new SparseArray<>(); 1305 } 1306 1307 void initialize() { 1308 mMonitor.register(mContext, null, UserHandle.ALL, true); 1309 getWallpaperDir(UserHandle.USER_SYSTEM).mkdirs(); 1310 1311 // Initialize state from the persistent store, then guarantee that the 1312 // WallpaperData for the system imagery is instantiated & active, creating 1313 // it from defaults if necessary. 1314 loadSettingsLocked(UserHandle.USER_SYSTEM, false); 1315 getWallpaperSafeLocked(UserHandle.USER_SYSTEM, FLAG_SYSTEM); 1316 } 1317 1318 private static File getWallpaperDir(int userId) { 1319 return Environment.getUserSystemDirectory(userId); 1320 } 1321 1322 @Override 1323 protected void finalize() throws Throwable { 1324 super.finalize(); 1325 for (int i = 0; i < mWallpaperMap.size(); i++) { 1326 WallpaperData wallpaper = mWallpaperMap.valueAt(i); 1327 wallpaper.wallpaperObserver.stopWatching(); 1328 } 1329 } 1330 1331 void systemReady() { 1332 if (DEBUG) Slog.v(TAG, "systemReady"); 1333 initialize(); 1334 1335 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.USER_SYSTEM); 1336 // If we think we're going to be using the system image wallpaper imagery, make 1337 // sure we have something to render 1338 if (mImageWallpaper.equals(wallpaper.nextWallpaperComponent)) { 1339 // No crop file? Make sure we've finished the processing sequence if necessary 1340 if (!wallpaper.cropExists()) { 1341 if (DEBUG) { 1342 Slog.i(TAG, "No crop; regenerating from source"); 1343 } 1344 generateCrop(wallpaper); 1345 } 1346 // Still nothing? Fall back to default. 1347 if (!wallpaper.cropExists()) { 1348 if (DEBUG) { 1349 Slog.i(TAG, "Unable to regenerate crop; resetting"); 1350 } 1351 clearWallpaperLocked(false, FLAG_SYSTEM, UserHandle.USER_SYSTEM, null); 1352 } 1353 } else { 1354 if (DEBUG) { 1355 Slog.i(TAG, "Nondefault wallpaper component; gracefully ignoring"); 1356 } 1357 } 1358 1359 IntentFilter userFilter = new IntentFilter(); 1360 userFilter.addAction(Intent.ACTION_USER_REMOVED); 1361 mContext.registerReceiver(new BroadcastReceiver() { 1362 @Override 1363 public void onReceive(Context context, Intent intent) { 1364 final String action = intent.getAction(); 1365 if (Intent.ACTION_USER_REMOVED.equals(action)) { 1366 onRemoveUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 1367 UserHandle.USER_NULL)); 1368 } 1369 } 1370 }, userFilter); 1371 1372 final IntentFilter shutdownFilter = new IntentFilter(Intent.ACTION_SHUTDOWN); 1373 mContext.registerReceiver(new BroadcastReceiver() { 1374 @Override 1375 public void onReceive(Context context, Intent intent) { 1376 if (Intent.ACTION_SHUTDOWN.equals(intent.getAction())) { 1377 if (DEBUG) { 1378 Slog.i(TAG, "Shutting down"); 1379 } 1380 synchronized (mLock) { 1381 mShuttingDown = true; 1382 } 1383 } 1384 } 1385 }, shutdownFilter); 1386 1387 try { 1388 ActivityManager.getService().registerUserSwitchObserver( 1389 new UserSwitchObserver() { 1390 @Override 1391 public void onUserSwitching(int newUserId, IRemoteCallback reply) { 1392 switchUser(newUserId, reply); 1393 } 1394 }, TAG); 1395 } catch (RemoteException e) { 1396 e.rethrowAsRuntimeException(); 1397 } 1398 } 1399 1400 /** Called by SystemBackupAgent */ 1401 public String getName() { 1402 // Verify caller is the system 1403 if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) { 1404 throw new RuntimeException("getName() can only be called from the system process"); 1405 } 1406 synchronized (mLock) { 1407 return mWallpaperMap.get(0).name; 1408 } 1409 } 1410 1411 void stopObserver(WallpaperData wallpaper) { 1412 if (wallpaper != null) { 1413 if (wallpaper.wallpaperObserver != null) { 1414 wallpaper.wallpaperObserver.stopWatching(); 1415 wallpaper.wallpaperObserver = null; 1416 } 1417 if (wallpaper.themeSettingsObserver != null) { 1418 wallpaper.themeSettingsObserver.stopObserving(mContext); 1419 wallpaper.themeSettingsObserver = null; 1420 } 1421 } 1422 } 1423 1424 void stopObserversLocked(int userId) { 1425 stopObserver(mWallpaperMap.get(userId)); 1426 stopObserver(mLockWallpaperMap.get(userId)); 1427 mWallpaperMap.remove(userId); 1428 mLockWallpaperMap.remove(userId); 1429 } 1430 1431 @Override 1432 public void onBootPhase(int phase) { 1433 if (phase == SystemService.PHASE_ACTIVITY_MANAGER_READY) { 1434 systemReady(); 1435 } else if (phase == SystemService.PHASE_THIRD_PARTY_APPS_CAN_START) { 1436 switchUser(UserHandle.USER_SYSTEM, null); 1437 } 1438 } 1439 1440 @Override 1441 public void onUnlockUser(final int userId) { 1442 synchronized (mLock) { 1443 if (mCurrentUserId == userId) { 1444 if (mWaitingForUnlock) { 1445 // the desired wallpaper is not direct-boot aware, load it now 1446 final WallpaperData systemWallpaper = 1447 getWallpaperSafeLocked(userId, FLAG_SYSTEM); 1448 switchWallpaper(systemWallpaper, null); 1449 } 1450 1451 // Make sure that the SELinux labeling of all the relevant files is correct. 1452 // This corrects for mislabeling bugs that might have arisen from move-to 1453 // operations involving the wallpaper files. This isn't timing-critical, 1454 // so we do it in the background to avoid holding up the user unlock operation. 1455 if (mUserRestorecon.get(userId) != Boolean.TRUE) { 1456 mUserRestorecon.put(userId, Boolean.TRUE); 1457 Runnable relabeler = new Runnable() { 1458 @Override 1459 public void run() { 1460 final File wallpaperDir = getWallpaperDir(userId); 1461 for (String filename : sPerUserFiles) { 1462 File f = new File(wallpaperDir, filename); 1463 if (f.exists()) { 1464 SELinux.restorecon(f); 1465 } 1466 } 1467 } 1468 }; 1469 BackgroundThread.getHandler().post(relabeler); 1470 } 1471 } 1472 } 1473 } 1474 1475 void onRemoveUser(int userId) { 1476 if (userId < 1) return; 1477 1478 final File wallpaperDir = getWallpaperDir(userId); 1479 synchronized (mLock) { 1480 stopObserversLocked(userId); 1481 for (String filename : sPerUserFiles) { 1482 new File(wallpaperDir, filename).delete(); 1483 } 1484 mUserRestorecon.remove(userId); 1485 } 1486 } 1487 1488 void switchUser(int userId, IRemoteCallback reply) { 1489 final WallpaperData systemWallpaper; 1490 final WallpaperData lockWallpaper; 1491 synchronized (mLock) { 1492 if (mCurrentUserId == userId) { 1493 return; 1494 } 1495 mCurrentUserId = userId; 1496 systemWallpaper = getWallpaperSafeLocked(userId, FLAG_SYSTEM); 1497 final WallpaperData tmpLockWallpaper = mLockWallpaperMap.get(userId); 1498 lockWallpaper = tmpLockWallpaper == null ? systemWallpaper : tmpLockWallpaper; 1499 // Not started watching yet, in case wallpaper data was loaded for other reasons. 1500 if (systemWallpaper.wallpaperObserver == null) { 1501 systemWallpaper.wallpaperObserver = new WallpaperObserver(systemWallpaper); 1502 systemWallpaper.wallpaperObserver.startWatching(); 1503 } 1504 if (systemWallpaper.themeSettingsObserver == null) { 1505 systemWallpaper.themeSettingsObserver = new ThemeSettingsObserver(null); 1506 systemWallpaper.themeSettingsObserver.startObserving(mContext); 1507 } 1508 mThemeMode = Settings.Secure.getInt( 1509 mContext.getContentResolver(), Settings.Secure.THEME_MODE, 1510 Settings.Secure.THEME_MODE_WALLPAPER); 1511 switchWallpaper(systemWallpaper, reply); 1512 } 1513 1514 // Offload color extraction to another thread since switchUser will be called 1515 // from the main thread. 1516 FgThread.getHandler().post(() -> { 1517 notifyWallpaperColorsChanged(systemWallpaper, FLAG_SYSTEM); 1518 notifyWallpaperColorsChanged(lockWallpaper, FLAG_LOCK); 1519 }); 1520 } 1521 1522 void switchWallpaper(WallpaperData wallpaper, IRemoteCallback reply) { 1523 synchronized (mLock) { 1524 mWaitingForUnlock = false; 1525 final ComponentName cname = wallpaper.wallpaperComponent != null ? 1526 wallpaper.wallpaperComponent : wallpaper.nextWallpaperComponent; 1527 if (!bindWallpaperComponentLocked(cname, true, false, wallpaper, reply)) { 1528 // We failed to bind the desired wallpaper, but that might 1529 // happen if the wallpaper isn't direct-boot aware 1530 ServiceInfo si = null; 1531 try { 1532 si = mIPackageManager.getServiceInfo(cname, 1533 PackageManager.MATCH_DIRECT_BOOT_UNAWARE, wallpaper.userId); 1534 } catch (RemoteException ignored) { 1535 } 1536 1537 if (si == null) { 1538 Slog.w(TAG, "Failure starting previous wallpaper; clearing"); 1539 clearWallpaperLocked(false, FLAG_SYSTEM, wallpaper.userId, reply); 1540 } else { 1541 Slog.w(TAG, "Wallpaper isn't direct boot aware; using fallback until unlocked"); 1542 // We might end up persisting the current wallpaper data 1543 // while locked, so pretend like the component was actually 1544 // bound into place 1545 wallpaper.wallpaperComponent = wallpaper.nextWallpaperComponent; 1546 final WallpaperData fallback = new WallpaperData(wallpaper.userId, 1547 WALLPAPER_LOCK_ORIG, WALLPAPER_LOCK_CROP); 1548 ensureSaneWallpaperData(fallback); 1549 bindWallpaperComponentLocked(mImageWallpaper, true, false, fallback, reply); 1550 mWaitingForUnlock = true; 1551 } 1552 } 1553 } 1554 } 1555 1556 @Override 1557 public void clearWallpaper(String callingPackage, int which, int userId) { 1558 if (DEBUG) Slog.v(TAG, "clearWallpaper"); 1559 checkPermission(android.Manifest.permission.SET_WALLPAPER); 1560 if (!isWallpaperSupported(callingPackage) || !isSetWallpaperAllowed(callingPackage)) { 1561 return; 1562 } 1563 userId = ActivityManager.handleIncomingUser(Binder.getCallingPid(), 1564 Binder.getCallingUid(), userId, false, true, "clearWallpaper", null); 1565 1566 WallpaperData data = null; 1567 synchronized (mLock) { 1568 clearWallpaperLocked(false, which, userId, null); 1569 1570 if (which == FLAG_LOCK) { 1571 data = mLockWallpaperMap.get(userId); 1572 } 1573 if (which == FLAG_SYSTEM || data == null) { 1574 data = mWallpaperMap.get(userId); 1575 } 1576 } 1577 1578 // When clearing a wallpaper, broadcast new valid colors 1579 if (data != null) { 1580 notifyWallpaperColorsChanged(data, which); 1581 } 1582 } 1583 1584 void clearWallpaperLocked(boolean defaultFailed, int which, int userId, IRemoteCallback reply) { 1585 if (which != FLAG_SYSTEM && which != FLAG_LOCK) { 1586 throw new IllegalArgumentException("Must specify exactly one kind of wallpaper to clear"); 1587 } 1588 1589 WallpaperData wallpaper = null; 1590 if (which == FLAG_LOCK) { 1591 wallpaper = mLockWallpaperMap.get(userId); 1592 if (wallpaper == null) { 1593 // It's already gone; we're done. 1594 if (DEBUG) { 1595 Slog.i(TAG, "Lock wallpaper already cleared"); 1596 } 1597 return; 1598 } 1599 } else { 1600 wallpaper = mWallpaperMap.get(userId); 1601 if (wallpaper == null) { 1602 // Might need to bring it in the first time to establish our rewrite 1603 loadSettingsLocked(userId, false); 1604 wallpaper = mWallpaperMap.get(userId); 1605 } 1606 } 1607 if (wallpaper == null) { 1608 return; 1609 } 1610 1611 final long ident = Binder.clearCallingIdentity(); 1612 try { 1613 if (wallpaper.wallpaperFile.exists()) { 1614 wallpaper.wallpaperFile.delete(); 1615 wallpaper.cropFile.delete(); 1616 if (which == FLAG_LOCK) { 1617 mLockWallpaperMap.remove(userId); 1618 final IWallpaperManagerCallback cb = mKeyguardListener; 1619 if (cb != null) { 1620 if (DEBUG) { 1621 Slog.i(TAG, "Notifying keyguard of lock wallpaper clear"); 1622 } 1623 try { 1624 cb.onWallpaperChanged(); 1625 } catch (RemoteException e) { 1626 // Oh well it went away; no big deal 1627 } 1628 } 1629 saveSettingsLocked(userId); 1630 return; 1631 } 1632 } 1633 1634 RuntimeException e = null; 1635 try { 1636 wallpaper.primaryColors = null; 1637 wallpaper.imageWallpaperPending = false; 1638 if (userId != mCurrentUserId) return; 1639 if (bindWallpaperComponentLocked(defaultFailed 1640 ? mImageWallpaper 1641 : null, true, false, wallpaper, reply)) { 1642 return; 1643 } 1644 } catch (IllegalArgumentException e1) { 1645 e = e1; 1646 } 1647 1648 // This can happen if the default wallpaper component doesn't 1649 // exist. This should be a system configuration problem, but 1650 // let's not let it crash the system and just live with no 1651 // wallpaper. 1652 Slog.e(TAG, "Default wallpaper component not found!", e); 1653 clearWallpaperComponentLocked(wallpaper); 1654 if (reply != null) { 1655 try { 1656 reply.sendResult(null); 1657 } catch (RemoteException e1) { 1658 } 1659 } 1660 } finally { 1661 Binder.restoreCallingIdentity(ident); 1662 } 1663 } 1664 1665 public boolean hasNamedWallpaper(String name) { 1666 synchronized (mLock) { 1667 List<UserInfo> users; 1668 long ident = Binder.clearCallingIdentity(); 1669 try { 1670 users = ((UserManager) mContext.getSystemService(Context.USER_SERVICE)).getUsers(); 1671 } finally { 1672 Binder.restoreCallingIdentity(ident); 1673 } 1674 for (UserInfo user: users) { 1675 // ignore managed profiles 1676 if (user.isManagedProfile()) { 1677 continue; 1678 } 1679 WallpaperData wd = mWallpaperMap.get(user.id); 1680 if (wd == null) { 1681 // User hasn't started yet, so load her settings to peek at the wallpaper 1682 loadSettingsLocked(user.id, false); 1683 wd = mWallpaperMap.get(user.id); 1684 } 1685 if (wd != null && name.equals(wd.name)) { 1686 return true; 1687 } 1688 } 1689 } 1690 return false; 1691 } 1692 1693 private Point getDefaultDisplaySize() { 1694 Point p = new Point(); 1695 WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE); 1696 Display d = wm.getDefaultDisplay(); 1697 d.getRealSize(p); 1698 return p; 1699 } 1700 1701 public void setDimensionHints(int width, int height, String callingPackage) 1702 throws RemoteException { 1703 checkPermission(android.Manifest.permission.SET_WALLPAPER_HINTS); 1704 if (!isWallpaperSupported(callingPackage)) { 1705 return; 1706 } 1707 synchronized (mLock) { 1708 int userId = UserHandle.getCallingUserId(); 1709 WallpaperData wallpaper = getWallpaperSafeLocked(userId, FLAG_SYSTEM); 1710 if (width <= 0 || height <= 0) { 1711 throw new IllegalArgumentException("width and height must be > 0"); 1712 } 1713 // Make sure it is at least as large as the display. 1714 Point displaySize = getDefaultDisplaySize(); 1715 width = Math.max(width, displaySize.x); 1716 height = Math.max(height, displaySize.y); 1717 1718 if (width != wallpaper.width || height != wallpaper.height) { 1719 wallpaper.width = width; 1720 wallpaper.height = height; 1721 saveSettingsLocked(userId); 1722 if (mCurrentUserId != userId) return; // Don't change the properties now 1723 if (wallpaper.connection != null) { 1724 if (wallpaper.connection.mEngine != null) { 1725 try { 1726 wallpaper.connection.mEngine.setDesiredSize( 1727 width, height); 1728 } catch (RemoteException e) { 1729 } 1730 notifyCallbacksLocked(wallpaper); 1731 } else if (wallpaper.connection.mService != null) { 1732 // We've attached to the service but the engine hasn't attached back to us 1733 // yet. This means it will be created with the previous dimensions, so we 1734 // need to update it to the new dimensions once it attaches. 1735 wallpaper.connection.mDimensionsChanged = true; 1736 } 1737 } 1738 } 1739 } 1740 } 1741 1742 public int getWidthHint() throws RemoteException { 1743 synchronized (mLock) { 1744 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.getCallingUserId()); 1745 if (wallpaper != null) { 1746 return wallpaper.width; 1747 } else { 1748 return 0; 1749 } 1750 } 1751 } 1752 1753 public int getHeightHint() throws RemoteException { 1754 synchronized (mLock) { 1755 WallpaperData wallpaper = mWallpaperMap.get(UserHandle.getCallingUserId()); 1756 if (wallpaper != null) { 1757 return wallpaper.height; 1758 } else { 1759 return 0; 1760 } 1761 } 1762 } 1763 1764 public void setDisplayPadding(Rect padding, String callingPackage) { 1765 checkPermission(android.Manifest.permission.SET_WALLPAPER_HINTS); 1766 if (!isWallpaperSupported(callingPackage)) { 1767 return; 1768 } 1769 synchronized (mLock) { 1770 int userId = UserHandle.getCallingUserId(); 1771 WallpaperData wallpaper = getWallpaperSafeLocked(userId, FLAG_SYSTEM); 1772 if (padding.left < 0 || padding.top < 0 || padding.right < 0 || padding.bottom < 0) { 1773 throw new IllegalArgumentException("padding must be positive: " + padding); 1774 } 1775 1776 if (!padding.equals(wallpaper.padding)) { 1777 wallpaper.padding.set(padding); 1778 saveSettingsLocked(userId); 1779 if (mCurrentUserId != userId) return; // Don't change the properties now 1780 if (wallpaper.connection != null) { 1781 if (wallpaper.connection.mEngine != null) { 1782 try { 1783 wallpaper.connection.mEngine.setDisplayPadding(padding); 1784 } catch (RemoteException e) { 1785 } 1786 notifyCallbacksLocked(wallpaper); 1787 } else if (wallpaper.connection.mService != null) { 1788 // We've attached to the service but the engine hasn't attached back to us 1789 // yet. This means it will be created with the previous dimensions, so we 1790 // need to update it to the new dimensions once it attaches. 1791 wallpaper.connection.mPaddingChanged = true; 1792 } 1793 } 1794 } 1795 } 1796 } 1797 1798 private void enforceCallingOrSelfPermissionAndAppOp(String permission, final String callingPkg, 1799 final int callingUid, String message) { 1800 mContext.enforceCallingOrSelfPermission(permission, message); 1801 1802 final String opName = AppOpsManager.permissionToOp(permission); 1803 if (opName != null) { 1804 final int appOpMode = mAppOpsManager.noteOp(opName, callingUid, callingPkg); 1805 if (appOpMode != AppOpsManager.MODE_ALLOWED) { 1806 throw new SecurityException( 1807 message + ": " + callingPkg + " is not allowed to " + permission); 1808 } 1809 } 1810 } 1811 1812 @Override 1813 public ParcelFileDescriptor getWallpaper(String callingPkg, IWallpaperManagerCallback cb, 1814 final int which, Bundle outParams, int wallpaperUserId) { 1815 final int hasPrivilege = mContext.checkCallingOrSelfPermission( 1816 android.Manifest.permission.READ_WALLPAPER_INTERNAL); 1817 if (hasPrivilege != PackageManager.PERMISSION_GRANTED) { 1818 enforceCallingOrSelfPermissionAndAppOp(android.Manifest.permission.READ_EXTERNAL_STORAGE, 1819 callingPkg, Binder.getCallingUid(), "read wallpaper"); 1820 } 1821 1822 wallpaperUserId = ActivityManager.handleIncomingUser(Binder.getCallingPid(), 1823 Binder.getCallingUid(), wallpaperUserId, false, true, "getWallpaper", null); 1824 1825 if (which != FLAG_SYSTEM && which != FLAG_LOCK) { 1826 throw new IllegalArgumentException("Must specify exactly one kind of wallpaper to read"); 1827 } 1828 1829 synchronized (mLock) { 1830 final SparseArray<WallpaperData> whichSet = 1831 (which == FLAG_LOCK) ? mLockWallpaperMap : mWallpaperMap; 1832 WallpaperData wallpaper = whichSet.get(wallpaperUserId); 1833 if (wallpaper == null) { 1834 // There is no established wallpaper imagery of this type (expected 1835 // only for lock wallpapers; a system WallpaperData is established at 1836 // user switch) 1837 return null; 1838 } 1839 try { 1840 if (outParams != null) { 1841 outParams.putInt("width", wallpaper.width); 1842 outParams.putInt("height", wallpaper.height); 1843 } 1844 if (cb != null) { 1845 wallpaper.callbacks.register(cb); 1846 } 1847 if (!wallpaper.cropFile.exists()) { 1848 return null; 1849 } 1850 return ParcelFileDescriptor.open(wallpaper.cropFile, MODE_READ_ONLY); 1851 } catch (FileNotFoundException e) { 1852 /* Shouldn't happen as we check to see if the file exists */ 1853 Slog.w(TAG, "Error getting wallpaper", e); 1854 } 1855 return null; 1856 } 1857 } 1858 1859 @Override 1860 public WallpaperInfo getWallpaperInfo(int userId) { 1861 userId = ActivityManager.handleIncomingUser(Binder.getCallingPid(), 1862 Binder.getCallingUid(), userId, false, true, "getWallpaperInfo", null); 1863 synchronized (mLock) { 1864 WallpaperData wallpaper = mWallpaperMap.get(userId); 1865 if (wallpaper != null && wallpaper.connection != null) { 1866 return wallpaper.connection.mInfo; 1867 } 1868 return null; 1869 } 1870 } 1871 1872 @Override 1873 public int getWallpaperIdForUser(int which, int userId) { 1874 userId = ActivityManager.handleIncomingUser(Binder.getCallingPid(), 1875 Binder.getCallingUid(), userId, false, true, "getWallpaperIdForUser", null); 1876 1877 if (which != FLAG_SYSTEM && which != FLAG_LOCK) { 1878 throw new IllegalArgumentException("Must specify exactly one kind of wallpaper"); 1879 } 1880 1881 final SparseArray<WallpaperData> map = 1882 (which == FLAG_LOCK) ? mLockWallpaperMap : mWallpaperMap; 1883 synchronized (mLock) { 1884 WallpaperData wallpaper = map.get(userId); 1885 if (wallpaper != null) { 1886 return wallpaper.wallpaperId; 1887 } 1888 } 1889 return -1; 1890 } 1891 1892 @Override 1893 public void registerWallpaperColorsCallback(IWallpaperManagerCallback cb, int userId) { 1894 userId = ActivityManager.handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), 1895 userId, true, true, "registerWallpaperColorsCallback", null); 1896 synchronized (mLock) { 1897 RemoteCallbackList<IWallpaperManagerCallback> userColorsChangedListeners = 1898 mColorsChangedListeners.get(userId); 1899 if (userColorsChangedListeners == null) { 1900 userColorsChangedListeners = new RemoteCallbackList<>(); 1901 mColorsChangedListeners.put(userId, userColorsChangedListeners); 1902 } 1903 userColorsChangedListeners.register(cb); 1904 } 1905 } 1906 1907 @Override 1908 public void unregisterWallpaperColorsCallback(IWallpaperManagerCallback cb, int userId) { 1909 userId = ActivityManager.handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), 1910 userId, true, true, "unregisterWallpaperColorsCallback", null); 1911 synchronized (mLock) { 1912 final RemoteCallbackList<IWallpaperManagerCallback> userColorsChangedListeners = 1913 mColorsChangedListeners.get(userId); 1914 if (userColorsChangedListeners != null) { 1915 userColorsChangedListeners.unregister(cb); 1916 } 1917 } 1918 } 1919 1920 public void setInAmbientMode(boolean inAmbienMode, boolean animated) { 1921 final IWallpaperEngine engine; 1922 synchronized (mLock) { 1923 mInAmbientMode = inAmbienMode; 1924 final WallpaperData data = mWallpaperMap.get(mCurrentUserId); 1925 if (data != null && data.connection != null && data.connection.mInfo != null 1926 && data.connection.mInfo.getSupportsAmbientMode()) { 1927 engine = data.connection.mEngine; 1928 } else { 1929 engine = null; 1930 } 1931 } 1932 1933 if (engine != null) { 1934 try { 1935 engine.setInAmbientMode(inAmbienMode, animated); 1936 } catch (RemoteException e) { 1937 // Cannot talk to wallpaper engine. 1938 } 1939 } 1940 } 1941 1942 @Override 1943 public boolean setLockWallpaperCallback(IWallpaperManagerCallback cb) { 1944 checkPermission(android.Manifest.permission.INTERNAL_SYSTEM_WINDOW); 1945 synchronized (mLock) { 1946 mKeyguardListener = cb; 1947 } 1948 return true; 1949 } 1950 1951 @Override 1952 public WallpaperColors getWallpaperColors(int which, int userId) throws RemoteException { 1953 if (which != FLAG_LOCK && which != FLAG_SYSTEM) { 1954 throw new IllegalArgumentException("which should be either FLAG_LOCK or FLAG_SYSTEM"); 1955 } 1956 userId = ActivityManager.handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(), 1957 userId, false, true, "getWallpaperColors", null); 1958 1959 WallpaperData wallpaperData = null; 1960 boolean shouldExtract; 1961 1962 synchronized (mLock) { 1963 if (which == FLAG_LOCK) { 1964 wallpaperData = mLockWallpaperMap.get(userId); 1965 } 1966 1967 // Try to get the system wallpaper anyway since it might 1968 // also be the lock screen wallpaper 1969 if (wallpaperData == null) { 1970 wallpaperData = mWallpaperMap.get(userId); 1971 } 1972 1973 if (wallpaperData == null) { 1974 return null; 1975 } 1976 shouldExtract = wallpaperData.primaryColors == null; 1977 } 1978 1979 if (shouldExtract) { 1980 extractColors(wallpaperData); 1981 } 1982 1983 synchronized (mLock) { 1984 return getThemeColorsLocked(wallpaperData.primaryColors); 1985 } 1986 } 1987 1988 @Override 1989 public ParcelFileDescriptor setWallpaper(String name, String callingPackage, 1990 Rect cropHint, boolean allowBackup, Bundle extras, int which, 1991 IWallpaperManagerCallback completion, int userId) { 1992 userId = ActivityManager.handleIncomingUser(getCallingPid(), getCallingUid(), userId, 1993 false /* all */, true /* full */, "changing wallpaper", null /* pkg */); 1994 checkPermission(android.Manifest.permission.SET_WALLPAPER); 1995 1996 if ((which & (FLAG_LOCK|FLAG_SYSTEM)) == 0) { 1997 final String msg = "Must specify a valid wallpaper category to set"; 1998 Slog.e(TAG, msg); 1999 throw new IllegalArgumentException(msg); 2000 } 2001 2002 if (!isWallpaperSupported(callingPackage) || !isSetWallpaperAllowed(callingPackage)) { 2003 return null; 2004 } 2005 2006 // "null" means the no-op crop, preserving the full input image 2007 if (cropHint == null) { 2008 cropHint = new Rect(0, 0, 0, 0); 2009 } else { 2010 if (cropHint.isEmpty() 2011 || cropHint.left < 0 2012 || cropHint.top < 0) { 2013 throw new IllegalArgumentException("Invalid crop rect supplied: " + cropHint); 2014 } 2015 } 2016 2017 synchronized (mLock) { 2018 if (DEBUG) Slog.v(TAG, "setWallpaper which=0x" + Integer.toHexString(which)); 2019 WallpaperData wallpaper; 2020 2021 /* If we're setting system but not lock, and lock is currently sharing the system 2022 * wallpaper, we need to migrate that image over to being lock-only before 2023 * the caller here writes new bitmap data. 2024 */ 2025 if (which == FLAG_SYSTEM && mLockWallpaperMap.get(userId) == null) { 2026 if (DEBUG) { 2027 Slog.i(TAG, "Migrating system->lock to preserve"); 2028 } 2029 migrateSystemToLockWallpaperLocked(userId); 2030 } 2031 2032 wallpaper = getWallpaperSafeLocked(userId, which); 2033 final long ident = Binder.clearCallingIdentity(); 2034 try { 2035 ParcelFileDescriptor pfd = updateWallpaperBitmapLocked(name, wallpaper, extras); 2036 if (pfd != null) { 2037 wallpaper.imageWallpaperPending = true; 2038 wallpaper.whichPending = which; 2039 wallpaper.setComplete = completion; 2040 wallpaper.cropHint.set(cropHint); 2041 wallpaper.allowBackup = allowBackup; 2042 } 2043 return pfd; 2044 } finally { 2045 Binder.restoreCallingIdentity(ident); 2046 } 2047 } 2048 } 2049 2050 private void migrateSystemToLockWallpaperLocked(int userId) { 2051 WallpaperData sysWP = mWallpaperMap.get(userId); 2052 if (sysWP == null) { 2053 if (DEBUG) { 2054 Slog.i(TAG, "No system wallpaper? Not tracking for lock-only"); 2055 } 2056 return; 2057 } 2058 2059 // We know a-priori that there is no lock-only wallpaper currently 2060 WallpaperData lockWP = new WallpaperData(userId, 2061 WALLPAPER_LOCK_ORIG, WALLPAPER_LOCK_CROP); 2062 lockWP.wallpaperId = sysWP.wallpaperId; 2063 lockWP.cropHint.set(sysWP.cropHint); 2064 lockWP.width = sysWP.width; 2065 lockWP.height = sysWP.height; 2066 lockWP.allowBackup = sysWP.allowBackup; 2067 lockWP.primaryColors = sysWP.primaryColors; 2068 2069 // Migrate the bitmap files outright; no need to copy 2070 try { 2071 Os.rename(sysWP.wallpaperFile.getAbsolutePath(), lockWP.wallpaperFile.getAbsolutePath()); 2072 Os.rename(sysWP.cropFile.getAbsolutePath(), lockWP.cropFile.getAbsolutePath()); 2073 } catch (ErrnoException e) { 2074 Slog.e(TAG, "Can't migrate system wallpaper: " + e.getMessage()); 2075 lockWP.wallpaperFile.delete(); 2076 lockWP.cropFile.delete(); 2077 return; 2078 } 2079 2080 mLockWallpaperMap.put(userId, lockWP); 2081 } 2082 2083 ParcelFileDescriptor updateWallpaperBitmapLocked(String name, WallpaperData wallpaper, 2084 Bundle extras) { 2085 if (name == null) name = ""; 2086 try { 2087 File dir = getWallpaperDir(wallpaper.userId); 2088 if (!dir.exists()) { 2089 dir.mkdir(); 2090 FileUtils.setPermissions( 2091 dir.getPath(), 2092 FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, 2093 -1, -1); 2094 } 2095 ParcelFileDescriptor fd = ParcelFileDescriptor.open(wallpaper.wallpaperFile, 2096 MODE_CREATE|MODE_READ_WRITE|MODE_TRUNCATE); 2097 if (!SELinux.restorecon(wallpaper.wallpaperFile)) { 2098 return null; 2099 } 2100 wallpaper.name = name; 2101 wallpaper.wallpaperId = makeWallpaperIdLocked(); 2102 if (extras != null) { 2103 extras.putInt(WallpaperManager.EXTRA_NEW_WALLPAPER_ID, wallpaper.wallpaperId); 2104 } 2105 // Nullify field to require new computation 2106 wallpaper.primaryColors = null; 2107 if (DEBUG) { 2108 Slog.v(TAG, "updateWallpaperBitmapLocked() : id=" + wallpaper.wallpaperId 2109 + " name=" + name + " file=" + wallpaper.wallpaperFile.getName()); 2110 } 2111 return fd; 2112 } catch (FileNotFoundException e) { 2113 Slog.w(TAG, "Error setting wallpaper", e); 2114 } 2115 return null; 2116 } 2117 2118 @Override 2119 public void setWallpaperComponentChecked(ComponentName name, String callingPackage, 2120 int userId) { 2121 2122 if (isWallpaperSupported(callingPackage) && isSetWallpaperAllowed(callingPackage)) { 2123 setWallpaperComponent(name, userId); 2124 } 2125 } 2126 2127 // ToDo: Remove this version of the function 2128 @Override 2129 public void setWallpaperComponent(ComponentName name) { 2130 setWallpaperComponent(name, UserHandle.getCallingUserId()); 2131 } 2132 2133 private void setWallpaperComponent(ComponentName name, int userId) { 2134 userId = ActivityManager.handleIncomingUser(getCallingPid(), getCallingUid(), userId, 2135 false /* all */, true /* full */, "changing live wallpaper", null /* pkg */); 2136 checkPermission(android.Manifest.permission.SET_WALLPAPER_COMPONENT); 2137 2138 int which = FLAG_SYSTEM; 2139 boolean shouldNotifyColors = false; 2140 WallpaperData wallpaper; 2141 2142 synchronized (mLock) { 2143 if (DEBUG) Slog.v(TAG, "setWallpaperComponent name=" + name); 2144 wallpaper = mWallpaperMap.get(userId); 2145 if (wallpaper == null) { 2146 throw new IllegalStateException("Wallpaper not yet initialized for user " + userId); 2147 } 2148 final long ident = Binder.clearCallingIdentity(); 2149 2150 // Live wallpapers can't be specified for keyguard. If we're using a static 2151 // system+lock image currently, migrate the system wallpaper to be a lock-only 2152 // image as part of making a different live component active as the system 2153 // wallpaper. 2154 if (mImageWallpaper.equals(wallpaper.wallpaperComponent)) { 2155 if (mLockWallpaperMap.get(userId) == null) { 2156 // We're using the static imagery and there is no lock-specific image in place, 2157 // therefore it's a shared system+lock image that we need to migrate. 2158 migrateSystemToLockWallpaperLocked(userId); 2159 } 2160 } 2161 2162 // New live wallpaper is also a lock wallpaper if nothing is set 2163 if (mLockWallpaperMap.get(userId) == null) { 2164 which |= FLAG_LOCK; 2165 } 2166 2167 try { 2168 wallpaper.imageWallpaperPending = false; 2169 boolean same = changingToSame(name, wallpaper); 2170 if (bindWallpaperComponentLocked(name, false, true, wallpaper, null)) { 2171 if (!same) { 2172 wallpaper.primaryColors = null; 2173 } 2174 wallpaper.wallpaperId = makeWallpaperIdLocked(); 2175 notifyCallbacksLocked(wallpaper); 2176 shouldNotifyColors = true; 2177 } 2178 } finally { 2179 Binder.restoreCallingIdentity(ident); 2180 } 2181 } 2182 2183 if (shouldNotifyColors) { 2184 notifyWallpaperColorsChanged(wallpaper, which); 2185 } 2186 } 2187 2188 private boolean changingToSame(ComponentName componentName, WallpaperData wallpaper) { 2189 if (wallpaper.connection != null) { 2190 if (wallpaper.wallpaperComponent == null) { 2191 if (componentName == null) { 2192 if (DEBUG) Slog.v(TAG, "changingToSame: still using default"); 2193 // Still using default wallpaper. 2194 return true; 2195 } 2196 } else if (wallpaper.wallpaperComponent.equals(componentName)) { 2197 // Changing to same wallpaper. 2198 if (DEBUG) Slog.v(TAG, "same wallpaper"); 2199 return true; 2200 } 2201 } 2202 return false; 2203 } 2204 2205 boolean bindWallpaperComponentLocked(ComponentName componentName, boolean force, 2206 boolean fromUser, WallpaperData wallpaper, IRemoteCallback reply) { 2207 if (DEBUG_LIVE) { 2208 Slog.v(TAG, "bindWallpaperComponentLocked: componentName=" + componentName); 2209 } 2210 // Has the component changed? 2211 if (!force && changingToSame(componentName, wallpaper)) { 2212 return true; 2213 } 2214 2215 try { 2216 if (componentName == null) { 2217 componentName = mDefaultWallpaperComponent; 2218 if (componentName == null) { 2219 // Fall back to static image wallpaper 2220 componentName = mImageWallpaper; 2221 //clearWallpaperComponentLocked(); 2222 //return; 2223 if (DEBUG_LIVE) Slog.v(TAG, "No default component; using image wallpaper"); 2224 } 2225 } 2226 int serviceUserId = wallpaper.userId; 2227 ServiceInfo si = mIPackageManager.getServiceInfo(componentName, 2228 PackageManager.GET_META_DATA | PackageManager.GET_PERMISSIONS, serviceUserId); 2229 if (si == null) { 2230 // The wallpaper component we're trying to use doesn't exist 2231 Slog.w(TAG, "Attempted wallpaper " + componentName + " is unavailable"); 2232 return false; 2233 } 2234 if (!android.Manifest.permission.BIND_WALLPAPER.equals(si.permission)) { 2235 String msg = "Selected service does not require " 2236 + android.Manifest.permission.BIND_WALLPAPER 2237 + ": " + componentName; 2238 if (fromUser) { 2239 throw new SecurityException(msg); 2240 } 2241 Slog.w(TAG, msg); 2242 return false; 2243 } 2244 2245 WallpaperInfo wi = null; 2246 2247 Intent intent = new Intent(WallpaperService.SERVICE_INTERFACE); 2248 if (componentName != null && !componentName.equals(mImageWallpaper)) { 2249 // Make sure the selected service is actually a wallpaper service. 2250 List<ResolveInfo> ris = 2251 mIPackageManager.queryIntentServices(intent, 2252 intent.resolveTypeIfNeeded(mContext.getContentResolver()), 2253 PackageManager.GET_META_DATA, serviceUserId).getList(); 2254 for (int i=0; i<ris.size(); i++) { 2255 ServiceInfo rsi = ris.get(i).serviceInfo; 2256 if (rsi.name.equals(si.name) && 2257 rsi.packageName.equals(si.packageName)) { 2258 try { 2259 wi = new WallpaperInfo(mContext, ris.get(i)); 2260 } catch (XmlPullParserException e) { 2261 if (fromUser) { 2262 throw new IllegalArgumentException(e); 2263 } 2264 Slog.w(TAG, e); 2265 return false; 2266 } catch (IOException e) { 2267 if (fromUser) { 2268 throw new IllegalArgumentException(e); 2269 } 2270 Slog.w(TAG, e); 2271 return false; 2272 } 2273 break; 2274 } 2275 } 2276 if (wi == null) { 2277 String msg = "Selected service is not a wallpaper: " 2278 + componentName; 2279 if (fromUser) { 2280 throw new SecurityException(msg); 2281 } 2282 Slog.w(TAG, msg); 2283 return false; 2284 } 2285 } 2286 2287 // Bind the service! 2288 if (DEBUG) Slog.v(TAG, "Binding to:" + componentName); 2289 WallpaperConnection newConn = new WallpaperConnection(wi, wallpaper); 2290 intent.setComponent(componentName); 2291 intent.putExtra(Intent.EXTRA_CLIENT_LABEL, 2292 com.android.internal.R.string.wallpaper_binding_label); 2293 intent.putExtra(Intent.EXTRA_CLIENT_INTENT, PendingIntent.getActivityAsUser( 2294 mContext, 0, 2295 Intent.createChooser(new Intent(Intent.ACTION_SET_WALLPAPER), 2296 mContext.getText(com.android.internal.R.string.chooser_wallpaper)), 2297 0, null, new UserHandle(serviceUserId))); 2298 if (!mContext.bindServiceAsUser(intent, newConn, 2299 Context.BIND_AUTO_CREATE | Context.BIND_SHOWING_UI 2300 | Context.BIND_FOREGROUND_SERVICE_WHILE_AWAKE, 2301 new UserHandle(serviceUserId))) { 2302 String msg = "Unable to bind service: " 2303 + componentName; 2304 if (fromUser) { 2305 throw new IllegalArgumentException(msg); 2306 } 2307 Slog.w(TAG, msg); 2308 return false; 2309 } 2310 if (wallpaper.userId == mCurrentUserId && mLastWallpaper != null) { 2311 detachWallpaperLocked(mLastWallpaper); 2312 } 2313 wallpaper.wallpaperComponent = componentName; 2314 wallpaper.connection = newConn; 2315 newConn.mReply = reply; 2316 try { 2317 if (wallpaper.userId == mCurrentUserId) { 2318 if (DEBUG) 2319 Slog.v(TAG, "Adding window token: " + newConn.mToken); 2320 mIWindowManager.addWindowToken(newConn.mToken, TYPE_WALLPAPER, DEFAULT_DISPLAY); 2321 mLastWallpaper = wallpaper; 2322 } 2323 } catch (RemoteException e) { 2324 } 2325 } catch (RemoteException e) { 2326 String msg = "Remote exception for " + componentName + "\n" + e; 2327 if (fromUser) { 2328 throw new IllegalArgumentException(msg); 2329 } 2330 Slog.w(TAG, msg); 2331 return false; 2332 } 2333 return true; 2334 } 2335 2336 void detachWallpaperLocked(WallpaperData wallpaper) { 2337 if (wallpaper.connection != null) { 2338 if (wallpaper.connection.mReply != null) { 2339 try { 2340 wallpaper.connection.mReply.sendResult(null); 2341 } catch (RemoteException e) { 2342 } 2343 wallpaper.connection.mReply = null; 2344 } 2345 if (wallpaper.connection.mEngine != null) { 2346 try { 2347 wallpaper.connection.mEngine.destroy(); 2348 } catch (RemoteException e) { 2349 } 2350 } 2351 mContext.unbindService(wallpaper.connection); 2352 try { 2353 if (DEBUG) 2354 Slog.v(TAG, "Removing window token: " + wallpaper.connection.mToken); 2355 mIWindowManager.removeWindowToken(wallpaper.connection.mToken, DEFAULT_DISPLAY); 2356 } catch (RemoteException e) { 2357 } 2358 wallpaper.connection.mService = null; 2359 wallpaper.connection.mEngine = null; 2360 wallpaper.connection = null; 2361 } 2362 } 2363 2364 void clearWallpaperComponentLocked(WallpaperData wallpaper) { 2365 wallpaper.wallpaperComponent = null; 2366 detachWallpaperLocked(wallpaper); 2367 } 2368 2369 void attachServiceLocked(WallpaperConnection conn, WallpaperData wallpaper) { 2370 try { 2371 conn.mService.attach(conn, conn.mToken, 2372 TYPE_WALLPAPER, false, 2373 wallpaper.width, wallpaper.height, wallpaper.padding); 2374 } catch (RemoteException e) { 2375 Slog.w(TAG, "Failed attaching wallpaper; clearing", e); 2376 if (!wallpaper.wallpaperUpdating) { 2377 bindWallpaperComponentLocked(null, false, false, wallpaper, null); 2378 } 2379 } 2380 } 2381 2382 private void notifyCallbacksLocked(WallpaperData wallpaper) { 2383 final int n = wallpaper.callbacks.beginBroadcast(); 2384 for (int i = 0; i < n; i++) { 2385 try { 2386 wallpaper.callbacks.getBroadcastItem(i).onWallpaperChanged(); 2387 } catch (RemoteException e) { 2388 2389 // The RemoteCallbackList will take care of removing 2390 // the dead object for us. 2391 } 2392 } 2393 wallpaper.callbacks.finishBroadcast(); 2394 2395 final Intent intent = new Intent(Intent.ACTION_WALLPAPER_CHANGED); 2396 mContext.sendBroadcastAsUser(intent, new UserHandle(mCurrentUserId)); 2397 } 2398 2399 private void checkPermission(String permission) { 2400 if (PackageManager.PERMISSION_GRANTED!= mContext.checkCallingOrSelfPermission(permission)) { 2401 throw new SecurityException("Access denied to process: " + Binder.getCallingPid() 2402 + ", must have permission " + permission); 2403 } 2404 } 2405 2406 /** 2407 * Certain user types do not support wallpapers (e.g. managed profiles). The check is 2408 * implemented through through the OP_WRITE_WALLPAPER AppOp. 2409 */ 2410 public boolean isWallpaperSupported(String callingPackage) { 2411 return mAppOpsManager.checkOpNoThrow(AppOpsManager.OP_WRITE_WALLPAPER, Binder.getCallingUid(), 2412 callingPackage) == AppOpsManager.MODE_ALLOWED; 2413 } 2414 2415 @Override 2416 public boolean isSetWallpaperAllowed(String callingPackage) { 2417 final PackageManager pm = mContext.getPackageManager(); 2418 String[] uidPackages = pm.getPackagesForUid(Binder.getCallingUid()); 2419 boolean uidMatchPackage = Arrays.asList(uidPackages).contains(callingPackage); 2420 if (!uidMatchPackage) { 2421 return false; // callingPackage was faked. 2422 } 2423 2424 final DevicePolicyManager dpm = mContext.getSystemService(DevicePolicyManager.class); 2425 if (dpm.isDeviceOwnerApp(callingPackage) || dpm.isProfileOwnerApp(callingPackage)) { 2426 return true; 2427 } 2428 final UserManager um = (UserManager) mContext.getSystemService(Context.USER_SERVICE); 2429 return !um.hasUserRestriction(UserManager.DISALLOW_SET_WALLPAPER); 2430 } 2431 2432 @Override 2433 public boolean isWallpaperBackupEligible(int which, int userId) { 2434 if (Binder.getCallingUid() != Process.SYSTEM_UID) { 2435 throw new SecurityException("Only the system may call isWallpaperBackupEligible"); 2436 } 2437 2438 WallpaperData wallpaper = (which == FLAG_LOCK) 2439 ? mLockWallpaperMap.get(userId) 2440 : mWallpaperMap.get(userId); 2441 return (wallpaper != null) ? wallpaper.allowBackup : false; 2442 } 2443 2444 private static JournaledFile makeJournaledFile(int userId) { 2445 final String base = new File(getWallpaperDir(userId), WALLPAPER_INFO).getAbsolutePath(); 2446 return new JournaledFile(new File(base), new File(base + ".tmp")); 2447 } 2448 2449 private void saveSettingsLocked(int userId) { 2450 JournaledFile journal = makeJournaledFile(userId); 2451 FileOutputStream fstream = null; 2452 BufferedOutputStream stream = null; 2453 try { 2454 XmlSerializer out = new FastXmlSerializer(); 2455 fstream = new FileOutputStream(journal.chooseForWrite(), false); 2456 stream = new BufferedOutputStream(fstream); 2457 out.setOutput(stream, StandardCharsets.UTF_8.name()); 2458 out.startDocument(null, true); 2459 2460 WallpaperData wallpaper; 2461 2462 wallpaper = mWallpaperMap.get(userId); 2463 if (wallpaper != null) { 2464 writeWallpaperAttributes(out, "wp", wallpaper); 2465 } 2466 wallpaper = mLockWallpaperMap.get(userId); 2467 if (wallpaper != null) { 2468 writeWallpaperAttributes(out, "kwp", wallpaper); 2469 } 2470 2471 out.endDocument(); 2472 2473 stream.flush(); // also flushes fstream 2474 FileUtils.sync(fstream); 2475 stream.close(); // also closes fstream 2476 journal.commit(); 2477 } catch (IOException e) { 2478 IoUtils.closeQuietly(stream); 2479 journal.rollback(); 2480 } 2481 } 2482 2483 private void writeWallpaperAttributes(XmlSerializer out, String tag, WallpaperData wallpaper) 2484 throws IllegalArgumentException, IllegalStateException, IOException { 2485 if (DEBUG) { 2486 Slog.v(TAG, "writeWallpaperAttributes id=" + wallpaper.wallpaperId); 2487 } 2488 out.startTag(null, tag); 2489 out.attribute(null, "id", Integer.toString(wallpaper.wallpaperId)); 2490 out.attribute(null, "width", Integer.toString(wallpaper.width)); 2491 out.attribute(null, "height", Integer.toString(wallpaper.height)); 2492 2493 out.attribute(null, "cropLeft", Integer.toString(wallpaper.cropHint.left)); 2494 out.attribute(null, "cropTop", Integer.toString(wallpaper.cropHint.top)); 2495 out.attribute(null, "cropRight", Integer.toString(wallpaper.cropHint.right)); 2496 out.attribute(null, "cropBottom", Integer.toString(wallpaper.cropHint.bottom)); 2497 2498 if (wallpaper.padding.left != 0) { 2499 out.attribute(null, "paddingLeft", Integer.toString(wallpaper.padding.left)); 2500 } 2501 if (wallpaper.padding.top != 0) { 2502 out.attribute(null, "paddingTop", Integer.toString(wallpaper.padding.top)); 2503 } 2504 if (wallpaper.padding.right != 0) { 2505 out.attribute(null, "paddingRight", Integer.toString(wallpaper.padding.right)); 2506 } 2507 if (wallpaper.padding.bottom != 0) { 2508 out.attribute(null, "paddingBottom", Integer.toString(wallpaper.padding.bottom)); 2509 } 2510 2511 if (wallpaper.primaryColors != null) { 2512 int colorsCount = wallpaper.primaryColors.getMainColors().size(); 2513 out.attribute(null, "colorsCount", Integer.toString(colorsCount)); 2514 if (colorsCount > 0) { 2515 for (int i = 0; i < colorsCount; i++) { 2516 final Color wc = wallpaper.primaryColors.getMainColors().get(i); 2517 out.attribute(null, "colorValue"+i, Integer.toString(wc.toArgb())); 2518 } 2519 } 2520 out.attribute(null, "colorHints", 2521 Integer.toString(wallpaper.primaryColors.getColorHints())); 2522 } 2523 2524 out.attribute(null, "name", wallpaper.name); 2525 if (wallpaper.wallpaperComponent != null 2526 && !wallpaper.wallpaperComponent.equals(mImageWallpaper)) { 2527 out.attribute(null, "component", 2528 wallpaper.wallpaperComponent.flattenToShortString()); 2529 } 2530 2531 if (wallpaper.allowBackup) { 2532 out.attribute(null, "backup", "true"); 2533 } 2534 2535 out.endTag(null, tag); 2536 } 2537 2538 private void migrateFromOld() { 2539 // Pre-N, what existed is the one we're now using as the display crop 2540 File preNWallpaper = new File(getWallpaperDir(0), WALLPAPER_CROP); 2541 // In the very-long-ago, imagery lived with the settings app 2542 File originalWallpaper = new File(WallpaperBackupHelper.WALLPAPER_IMAGE_KEY); 2543 File newWallpaper = new File(getWallpaperDir(0), WALLPAPER); 2544 2545 // Migrations from earlier wallpaper image storage schemas 2546 if (preNWallpaper.exists()) { 2547 if (!newWallpaper.exists()) { 2548 // we've got the 'wallpaper' crop file but not the nominal source image, 2549 // so do the simple "just take everything" straight copy of legacy data 2550 if (DEBUG) { 2551 Slog.i(TAG, "Migrating wallpaper schema"); 2552 } 2553 FileUtils.copyFile(preNWallpaper, newWallpaper); 2554 } // else we're in the usual modern case: both source & crop exist 2555 } else if (originalWallpaper.exists()) { 2556 // VERY old schema; make sure things exist and are in the right place 2557 if (DEBUG) { 2558 Slog.i(TAG, "Migrating antique wallpaper schema"); 2559 } 2560 File oldInfo = new File(WallpaperBackupHelper.WALLPAPER_INFO_KEY); 2561 if (oldInfo.exists()) { 2562 File newInfo = new File(getWallpaperDir(0), WALLPAPER_INFO); 2563 oldInfo.renameTo(newInfo); 2564 } 2565 2566 FileUtils.copyFile(originalWallpaper, preNWallpaper); 2567 originalWallpaper.renameTo(newWallpaper); 2568 } 2569 } 2570 2571 private int getAttributeInt(XmlPullParser parser, String name, int defValue) { 2572 String value = parser.getAttributeValue(null, name); 2573 if (value == null) { 2574 return defValue; 2575 } 2576 return Integer.parseInt(value); 2577 } 2578 2579 /** 2580 * Sometimes it is expected the wallpaper map may not have a user's data. E.g. This could 2581 * happen during user switch. The async user switch observer may not have received 2582 * the event yet. We use this safe method when we don't care about this ordering and just 2583 * want to update the data. The data is going to be applied when the user switch observer 2584 * is eventually executed. 2585 * 2586 * Important: this method loads settings to initialize the given user's wallpaper data if 2587 * there is no current in-memory state. 2588 */ 2589 private WallpaperData getWallpaperSafeLocked(int userId, int which) { 2590 // We're setting either just system (work with the system wallpaper), 2591 // both (also work with the system wallpaper), or just the lock 2592 // wallpaper (update against the existing lock wallpaper if any). 2593 // Combined or just-system operations use the 'system' WallpaperData 2594 // for this use; lock-only operations use the dedicated one. 2595 final SparseArray<WallpaperData> whichSet = 2596 (which == FLAG_LOCK) ? mLockWallpaperMap : mWallpaperMap; 2597 WallpaperData wallpaper = whichSet.get(userId); 2598 if (wallpaper == null) { 2599 // common case, this is the first lookup post-boot of the system or 2600 // unified lock, so we bring up the saved state lazily now and recheck. 2601 loadSettingsLocked(userId, false); 2602 wallpaper = whichSet.get(userId); 2603 // if it's still null here, this is a lock-only operation and there is not 2604 // yet a lock-only wallpaper set for this user, so we need to establish 2605 // it now. 2606 if (wallpaper == null) { 2607 if (which == FLAG_LOCK) { 2608 wallpaper = new WallpaperData(userId, 2609 WALLPAPER_LOCK_ORIG, WALLPAPER_LOCK_CROP); 2610 mLockWallpaperMap.put(userId, wallpaper); 2611 ensureSaneWallpaperData(wallpaper); 2612 } else { 2613 // sanity fallback: we're in bad shape, but establishing a known 2614 // valid system+lock WallpaperData will keep us from dying. 2615 Slog.wtf(TAG, "Didn't find wallpaper in non-lock case!"); 2616 wallpaper = new WallpaperData(userId, WALLPAPER, WALLPAPER_CROP); 2617 mWallpaperMap.put(userId, wallpaper); 2618 ensureSaneWallpaperData(wallpaper); 2619 } 2620 } 2621 } 2622 return wallpaper; 2623 } 2624 2625 private void loadSettingsLocked(int userId, boolean keepDimensionHints) { 2626 JournaledFile journal = makeJournaledFile(userId); 2627 FileInputStream stream = null; 2628 File file = journal.chooseForRead(); 2629 2630 WallpaperData wallpaper = mWallpaperMap.get(userId); 2631 if (wallpaper == null) { 2632 // Do this once per boot 2633 migrateFromOld(); 2634 2635 wallpaper = new WallpaperData(userId, WALLPAPER, WALLPAPER_CROP); 2636 wallpaper.allowBackup = true; 2637 mWallpaperMap.put(userId, wallpaper); 2638 if (!wallpaper.cropExists()) { 2639 if (wallpaper.sourceExists()) { 2640 generateCrop(wallpaper); 2641 } else { 2642 Slog.i(TAG, "No static wallpaper imagery; defaults will be shown"); 2643 } 2644 } 2645 } 2646 boolean success = false; 2647 try { 2648 stream = new FileInputStream(file); 2649 XmlPullParser parser = Xml.newPullParser(); 2650 parser.setInput(stream, StandardCharsets.UTF_8.name()); 2651 2652 int type; 2653 do { 2654 type = parser.next(); 2655 if (type == XmlPullParser.START_TAG) { 2656 String tag = parser.getName(); 2657 if ("wp".equals(tag)) { 2658 // Common to system + lock wallpapers 2659 parseWallpaperAttributes(parser, wallpaper, keepDimensionHints); 2660 2661 // A system wallpaper might also be a live wallpaper 2662 String comp = parser.getAttributeValue(null, "component"); 2663 wallpaper.nextWallpaperComponent = comp != null 2664 ? ComponentName.unflattenFromString(comp) 2665 : null; 2666 if (wallpaper.nextWallpaperComponent == null 2667 || "android".equals(wallpaper.nextWallpaperComponent 2668 .getPackageName())) { 2669 wallpaper.nextWallpaperComponent = mImageWallpaper; 2670 } 2671 2672 if (DEBUG) { 2673 Slog.v(TAG, "mWidth:" + wallpaper.width); 2674 Slog.v(TAG, "mHeight:" + wallpaper.height); 2675 Slog.v(TAG, "cropRect:" + wallpaper.cropHint); 2676 Slog.v(TAG, "primaryColors:" + wallpaper.primaryColors); 2677 Slog.v(TAG, "mName:" + wallpaper.name); 2678 Slog.v(TAG, "mNextWallpaperComponent:" 2679 + wallpaper.nextWallpaperComponent); 2680 } 2681 } else if ("kwp".equals(tag)) { 2682 // keyguard-specific wallpaper for this user 2683 WallpaperData lockWallpaper = mLockWallpaperMap.get(userId); 2684 if (lockWallpaper == null) { 2685 lockWallpaper = new WallpaperData(userId, 2686 WALLPAPER_LOCK_ORIG, WALLPAPER_LOCK_CROP); 2687 mLockWallpaperMap.put(userId, lockWallpaper); 2688 } 2689 parseWallpaperAttributes(parser, lockWallpaper, false); 2690 } 2691 } 2692 } while (type != XmlPullParser.END_DOCUMENT); 2693 success = true; 2694 } catch (FileNotFoundException e) { 2695 Slog.w(TAG, "no current wallpaper -- first boot?"); 2696 } catch (NullPointerException e) { 2697 Slog.w(TAG, "failed parsing " + file + " " + e); 2698 } catch (NumberFormatException e) { 2699 Slog.w(TAG, "failed parsing " + file + " " + e); 2700 } catch (XmlPullParserException e) { 2701 Slog.w(TAG, "failed parsing " + file + " " + e); 2702 } catch (IOException e) { 2703 Slog.w(TAG, "failed parsing " + file + " " + e); 2704 } catch (IndexOutOfBoundsException e) { 2705 Slog.w(TAG, "failed parsing " + file + " " + e); 2706 } 2707 IoUtils.closeQuietly(stream); 2708 2709 if (!success) { 2710 wallpaper.width = -1; 2711 wallpaper.height = -1; 2712 wallpaper.cropHint.set(0, 0, 0, 0); 2713 wallpaper.padding.set(0, 0, 0, 0); 2714 wallpaper.name = ""; 2715 2716 mLockWallpaperMap.remove(userId); 2717 } else { 2718 if (wallpaper.wallpaperId <= 0) { 2719 wallpaper.wallpaperId = makeWallpaperIdLocked(); 2720 if (DEBUG) { 2721 Slog.w(TAG, "Didn't set wallpaper id in loadSettingsLocked(" + userId 2722 + "); now " + wallpaper.wallpaperId); 2723 } 2724 } 2725 } 2726 2727 ensureSaneWallpaperData(wallpaper); 2728 WallpaperData lockWallpaper = mLockWallpaperMap.get(userId); 2729 if (lockWallpaper != null) { 2730 ensureSaneWallpaperData(lockWallpaper); 2731 } 2732 } 2733 2734 private void ensureSaneWallpaperData(WallpaperData wallpaper) { 2735 // We always want to have some reasonable width hint. 2736 int baseSize = getMaximumSizeDimension(); 2737 if (wallpaper.width < baseSize) { 2738 wallpaper.width = baseSize; 2739 } 2740 if (wallpaper.height < baseSize) { 2741 wallpaper.height = baseSize; 2742 } 2743 // and crop, if not previously specified 2744 if (wallpaper.cropHint.width() <= 0 2745 || wallpaper.cropHint.height() <= 0) { 2746 wallpaper.cropHint.set(0, 0, wallpaper.width, wallpaper.height); 2747 } 2748 } 2749 2750 private void parseWallpaperAttributes(XmlPullParser parser, WallpaperData wallpaper, 2751 boolean keepDimensionHints) { 2752 final String idString = parser.getAttributeValue(null, "id"); 2753 if (idString != null) { 2754 final int id = wallpaper.wallpaperId = Integer.parseInt(idString); 2755 if (id > mWallpaperId) { 2756 mWallpaperId = id; 2757 } 2758 } else { 2759 wallpaper.wallpaperId = makeWallpaperIdLocked(); 2760 } 2761 2762 if (!keepDimensionHints) { 2763 wallpaper.width = Integer.parseInt(parser.getAttributeValue(null, "width")); 2764 wallpaper.height = Integer.parseInt(parser 2765 .getAttributeValue(null, "height")); 2766 } 2767 wallpaper.cropHint.left = getAttributeInt(parser, "cropLeft", 0); 2768 wallpaper.cropHint.top = getAttributeInt(parser, "cropTop", 0); 2769 wallpaper.cropHint.right = getAttributeInt(parser, "cropRight", 0); 2770 wallpaper.cropHint.bottom = getAttributeInt(parser, "cropBottom", 0); 2771 wallpaper.padding.left = getAttributeInt(parser, "paddingLeft", 0); 2772 wallpaper.padding.top = getAttributeInt(parser, "paddingTop", 0); 2773 wallpaper.padding.right = getAttributeInt(parser, "paddingRight", 0); 2774 wallpaper.padding.bottom = getAttributeInt(parser, "paddingBottom", 0); 2775 int colorsCount = getAttributeInt(parser, "colorsCount", 0); 2776 if (colorsCount > 0) { 2777 Color primary = null, secondary = null, tertiary = null; 2778 for (int i = 0; i < colorsCount; i++) { 2779 Color color = Color.valueOf(getAttributeInt(parser, "colorValue" + i, 0)); 2780 if (i == 0) { 2781 primary = color; 2782 } else if (i == 1) { 2783 secondary = color; 2784 } else if (i == 2) { 2785 tertiary = color; 2786 } else { 2787 break; 2788 } 2789 } 2790 int colorHints = getAttributeInt(parser, "colorHints", 0); 2791 wallpaper.primaryColors = new WallpaperColors(primary, secondary, tertiary, colorHints); 2792 } 2793 wallpaper.name = parser.getAttributeValue(null, "name"); 2794 wallpaper.allowBackup = "true".equals(parser.getAttributeValue(null, "backup")); 2795 } 2796 2797 private int getMaximumSizeDimension() { 2798 WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE); 2799 Display d = wm.getDefaultDisplay(); 2800 return d.getMaximumSizeDimension(); 2801 } 2802 2803 // Called by SystemBackupAgent after files are restored to disk. 2804 public void settingsRestored() { 2805 // Verify caller is the system 2806 if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) { 2807 throw new RuntimeException("settingsRestored() can only be called from the system process"); 2808 } 2809 // TODO: If necessary, make it work for secondary users as well. This currently assumes 2810 // restores only to the primary user 2811 if (DEBUG) Slog.v(TAG, "settingsRestored"); 2812 WallpaperData wallpaper = null; 2813 boolean success = false; 2814 synchronized (mLock) { 2815 loadSettingsLocked(UserHandle.USER_SYSTEM, false); 2816 wallpaper = mWallpaperMap.get(UserHandle.USER_SYSTEM); 2817 wallpaper.wallpaperId = makeWallpaperIdLocked(); // always bump id at restore 2818 wallpaper.allowBackup = true; // by definition if it was restored 2819 if (wallpaper.nextWallpaperComponent != null 2820 && !wallpaper.nextWallpaperComponent.equals(mImageWallpaper)) { 2821 if (!bindWallpaperComponentLocked(wallpaper.nextWallpaperComponent, false, false, 2822 wallpaper, null)) { 2823 // No such live wallpaper or other failure; fall back to the default 2824 // live wallpaper (since the profile being restored indicated that the 2825 // user had selected a live rather than static one). 2826 bindWallpaperComponentLocked(null, false, false, wallpaper, null); 2827 } 2828 success = true; 2829 } else { 2830 // If there's a wallpaper name, we use that. If that can't be loaded, then we 2831 // use the default. 2832 if ("".equals(wallpaper.name)) { 2833 if (DEBUG) Slog.v(TAG, "settingsRestored: name is empty"); 2834 success = true; 2835 } else { 2836 if (DEBUG) Slog.v(TAG, "settingsRestored: attempting to restore named resource"); 2837 success = restoreNamedResourceLocked(wallpaper); 2838 } 2839 if (DEBUG) Slog.v(TAG, "settingsRestored: success=" + success 2840 + " id=" + wallpaper.wallpaperId); 2841 if (success) { 2842 generateCrop(wallpaper); // based on the new image + metadata 2843 bindWallpaperComponentLocked(wallpaper.nextWallpaperComponent, true, false, 2844 wallpaper, null); 2845 } 2846 } 2847 } 2848 2849 if (!success) { 2850 Slog.e(TAG, "Failed to restore wallpaper: '" + wallpaper.name + "'"); 2851 wallpaper.name = ""; 2852 getWallpaperDir(UserHandle.USER_SYSTEM).delete(); 2853 } 2854 2855 synchronized (mLock) { 2856 saveSettingsLocked(UserHandle.USER_SYSTEM); 2857 } 2858 } 2859 2860 // Restore the named resource bitmap to both source + crop files 2861 boolean restoreNamedResourceLocked(WallpaperData wallpaper) { 2862 if (wallpaper.name.length() > 4 && "res:".equals(wallpaper.name.substring(0, 4))) { 2863 String resName = wallpaper.name.substring(4); 2864 2865 String pkg = null; 2866 int colon = resName.indexOf(':'); 2867 if (colon > 0) { 2868 pkg = resName.substring(0, colon); 2869 } 2870 2871 String ident = null; 2872 int slash = resName.lastIndexOf('/'); 2873 if (slash > 0) { 2874 ident = resName.substring(slash+1); 2875 } 2876 2877 String type = null; 2878 if (colon > 0 && slash > 0 && (slash-colon) > 1) { 2879 type = resName.substring(colon+1, slash); 2880 } 2881 2882 if (pkg != null && ident != null && type != null) { 2883 int resId = -1; 2884 InputStream res = null; 2885 FileOutputStream fos = null; 2886 FileOutputStream cos = null; 2887 try { 2888 Context c = mContext.createPackageContext(pkg, Context.CONTEXT_RESTRICTED); 2889 Resources r = c.getResources(); 2890 resId = r.getIdentifier(resName, null, null); 2891 if (resId == 0) { 2892 Slog.e(TAG, "couldn't resolve identifier pkg=" + pkg + " type=" + type 2893 + " ident=" + ident); 2894 return false; 2895 } 2896 2897 res = r.openRawResource(resId); 2898 if (wallpaper.wallpaperFile.exists()) { 2899 wallpaper.wallpaperFile.delete(); 2900 wallpaper.cropFile.delete(); 2901 } 2902 fos = new FileOutputStream(wallpaper.wallpaperFile); 2903 cos = new FileOutputStream(wallpaper.cropFile); 2904 2905 byte[] buffer = new byte[32768]; 2906 int amt; 2907 while ((amt=res.read(buffer)) > 0) { 2908 fos.write(buffer, 0, amt); 2909 cos.write(buffer, 0, amt); 2910 } 2911 // mWallpaperObserver will notice the close and send the change broadcast 2912 2913 Slog.v(TAG, "Restored wallpaper: " + resName); 2914 return true; 2915 } catch (NameNotFoundException e) { 2916 Slog.e(TAG, "Package name " + pkg + " not found"); 2917 } catch (Resources.NotFoundException e) { 2918 Slog.e(TAG, "Resource not found: " + resId); 2919 } catch (IOException e) { 2920 Slog.e(TAG, "IOException while restoring wallpaper ", e); 2921 } finally { 2922 IoUtils.closeQuietly(res); 2923 if (fos != null) { 2924 FileUtils.sync(fos); 2925 } 2926 if (cos != null) { 2927 FileUtils.sync(cos); 2928 } 2929 IoUtils.closeQuietly(fos); 2930 IoUtils.closeQuietly(cos); 2931 } 2932 } 2933 } 2934 return false; 2935 } 2936 2937 @Override 2938 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 2939 if (!DumpUtils.checkDumpPermission(mContext, TAG, pw)) return; 2940 2941 synchronized (mLock) { 2942 pw.println("System wallpaper state:"); 2943 for (int i = 0; i < mWallpaperMap.size(); i++) { 2944 WallpaperData wallpaper = mWallpaperMap.valueAt(i); 2945 pw.print(" User "); pw.print(wallpaper.userId); 2946 pw.print(": id="); pw.println(wallpaper.wallpaperId); 2947 pw.print(" mWidth="); 2948 pw.print(wallpaper.width); 2949 pw.print(" mHeight="); 2950 pw.println(wallpaper.height); 2951 pw.print(" mCropHint="); pw.println(wallpaper.cropHint); 2952 pw.print(" mPadding="); pw.println(wallpaper.padding); 2953 pw.print(" mName="); pw.println(wallpaper.name); 2954 pw.print(" mAllowBackup="); pw.println(wallpaper.allowBackup); 2955 pw.print(" mWallpaperComponent="); pw.println(wallpaper.wallpaperComponent); 2956 if (wallpaper.connection != null) { 2957 WallpaperConnection conn = wallpaper.connection; 2958 pw.print(" Wallpaper connection "); 2959 pw.print(conn); 2960 pw.println(":"); 2961 if (conn.mInfo != null) { 2962 pw.print(" mInfo.component="); 2963 pw.println(conn.mInfo.getComponent()); 2964 } 2965 pw.print(" mToken="); 2966 pw.println(conn.mToken); 2967 pw.print(" mService="); 2968 pw.println(conn.mService); 2969 pw.print(" mEngine="); 2970 pw.println(conn.mEngine); 2971 pw.print(" mLastDiedTime="); 2972 pw.println(wallpaper.lastDiedTime - SystemClock.uptimeMillis()); 2973 } 2974 } 2975 pw.println("Lock wallpaper state:"); 2976 for (int i = 0; i < mLockWallpaperMap.size(); i++) { 2977 WallpaperData wallpaper = mLockWallpaperMap.valueAt(i); 2978 pw.print(" User "); pw.print(wallpaper.userId); 2979 pw.print(": id="); pw.println(wallpaper.wallpaperId); 2980 pw.print(" mWidth="); pw.print(wallpaper.width); 2981 pw.print(" mHeight="); pw.println(wallpaper.height); 2982 pw.print(" mCropHint="); pw.println(wallpaper.cropHint); 2983 pw.print(" mPadding="); pw.println(wallpaper.padding); 2984 pw.print(" mName="); pw.println(wallpaper.name); 2985 pw.print(" mAllowBackup="); pw.println(wallpaper.allowBackup); 2986 } 2987 2988 } 2989 } 2990 } 2991