| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.server; |
| |
| import static android.os.ParcelFileDescriptor.*; |
| |
| import android.app.ActivityManagerNative; |
| import android.app.AppGlobals; |
| import android.app.IUserSwitchObserver; |
| import android.app.IWallpaperManager; |
| import android.app.IWallpaperManagerCallback; |
| import android.app.PendingIntent; |
| import android.app.WallpaperInfo; |
| import android.app.backup.BackupManager; |
| import android.app.backup.WallpaperBackupHelper; |
| import android.content.BroadcastReceiver; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.ServiceConnection; |
| import android.content.pm.IPackageManager; |
| import android.content.pm.PackageManager; |
| import android.content.pm.ResolveInfo; |
| import android.content.pm.ServiceInfo; |
| import android.content.pm.PackageManager.NameNotFoundException; |
| import android.content.pm.UserInfo; |
| import android.content.res.Resources; |
| import android.os.Binder; |
| import android.os.Bundle; |
| import android.os.Environment; |
| import android.os.FileUtils; |
| import android.os.IBinder; |
| import android.os.IRemoteCallback; |
| import android.os.RemoteException; |
| import android.os.FileObserver; |
| import android.os.ParcelFileDescriptor; |
| import android.os.RemoteCallbackList; |
| import android.os.SELinux; |
| import android.os.ServiceManager; |
| import android.os.SystemClock; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.service.wallpaper.IWallpaperConnection; |
| import android.service.wallpaper.IWallpaperEngine; |
| import android.service.wallpaper.IWallpaperService; |
| import android.service.wallpaper.WallpaperService; |
| import android.util.Slog; |
| import android.util.SparseArray; |
| import android.util.Xml; |
| import android.view.Display; |
| import android.view.IWindowManager; |
| import android.view.WindowManager; |
| |
| import java.io.FileDescriptor; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.File; |
| import java.io.FileNotFoundException; |
| import java.io.FileInputStream; |
| import java.io.FileOutputStream; |
| import java.io.PrintWriter; |
| import java.util.List; |
| |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| import org.xmlpull.v1.XmlSerializer; |
| |
| import com.android.internal.content.PackageMonitor; |
| import com.android.internal.util.FastXmlSerializer; |
| import com.android.internal.util.JournaledFile; |
| |
| class WallpaperManagerService extends IWallpaperManager.Stub { |
| static final String TAG = "WallpaperService"; |
| static final boolean DEBUG = false; |
| |
| final Object mLock = new Object[0]; |
| |
| /** |
| * Minimum time between crashes of a wallpaper service for us to consider |
| * restarting it vs. just reverting to the static wallpaper. |
| */ |
| static final long MIN_WALLPAPER_CRASH_TIME = 10000; |
| static final String WALLPAPER = "wallpaper"; |
| static final String WALLPAPER_INFO = "wallpaper_info.xml"; |
| |
| /** |
| * Name of the component used to display bitmap wallpapers from either the gallery or |
| * built-in wallpapers. |
| */ |
| static final ComponentName IMAGE_WALLPAPER = new ComponentName("com.android.systemui", |
| "com.android.systemui.ImageWallpaper"); |
| |
| /** |
| * Observes the wallpaper for changes and notifies all IWallpaperServiceCallbacks |
| * that the wallpaper has changed. The CREATE is triggered when there is no |
| * wallpaper set and is created for the first time. The CLOSE_WRITE is triggered |
| * everytime the wallpaper is changed. |
| */ |
| private class WallpaperObserver extends FileObserver { |
| |
| final WallpaperData mWallpaper; |
| final File mWallpaperDir; |
| final File mWallpaperFile; |
| |
| public WallpaperObserver(WallpaperData wallpaper) { |
| super(getWallpaperDir(wallpaper.userId).getAbsolutePath(), |
| CLOSE_WRITE | DELETE | DELETE_SELF); |
| mWallpaperDir = getWallpaperDir(wallpaper.userId); |
| mWallpaper = wallpaper; |
| mWallpaperFile = new File(mWallpaperDir, WALLPAPER); |
| } |
| |
| @Override |
| public void onEvent(int event, String path) { |
| if (path == null) { |
| return; |
| } |
| synchronized (mLock) { |
| // changing the wallpaper means we'll need to back up the new one |
| long origId = Binder.clearCallingIdentity(); |
| BackupManager bm = new BackupManager(mContext); |
| bm.dataChanged(); |
| Binder.restoreCallingIdentity(origId); |
| |
| File changedFile = new File(mWallpaperDir, path); |
| if (mWallpaperFile.equals(changedFile)) { |
| notifyCallbacksLocked(mWallpaper); |
| if (mWallpaper.wallpaperComponent == null || event != CLOSE_WRITE |
| || mWallpaper.imageWallpaperPending) { |
| if (event == CLOSE_WRITE) { |
| mWallpaper.imageWallpaperPending = false; |
| } |
| bindWallpaperComponentLocked(IMAGE_WALLPAPER, true, |
| false, mWallpaper, null); |
| saveSettingsLocked(mWallpaper); |
| } |
| } |
| } |
| } |
| } |
| |
| final Context mContext; |
| final IWindowManager mIWindowManager; |
| final IPackageManager mIPackageManager; |
| final MyPackageMonitor mMonitor; |
| WallpaperData mLastWallpaper; |
| |
| SparseArray<WallpaperData> mWallpaperMap = new SparseArray<WallpaperData>(); |
| |
| int mCurrentUserId; |
| |
| static class WallpaperData { |
| |
| int userId; |
| |
| File wallpaperFile; |
| |
| /** |
| * Client is currently writing a new image wallpaper. |
| */ |
| boolean imageWallpaperPending; |
| |
| /** |
| * Resource name if using a picture from the wallpaper gallery |
| */ |
| String name = ""; |
| |
| /** |
| * The component name of the currently set live wallpaper. |
| */ |
| ComponentName wallpaperComponent; |
| |
| /** |
| * The component name of the wallpaper that should be set next. |
| */ |
| ComponentName nextWallpaperComponent; |
| |
| WallpaperConnection connection; |
| long lastDiedTime; |
| boolean wallpaperUpdating; |
| WallpaperObserver wallpaperObserver; |
| |
| /** |
| * List of callbacks registered they should each be notified when the wallpaper is changed. |
| */ |
| private RemoteCallbackList<IWallpaperManagerCallback> callbacks |
| = new RemoteCallbackList<IWallpaperManagerCallback>(); |
| |
| int width = -1; |
| int height = -1; |
| |
| WallpaperData(int userId) { |
| this.userId = userId; |
| wallpaperFile = new File(getWallpaperDir(userId), WALLPAPER); |
| } |
| } |
| |
| class WallpaperConnection extends IWallpaperConnection.Stub |
| implements ServiceConnection { |
| final WallpaperInfo mInfo; |
| final Binder mToken = new Binder(); |
| IWallpaperService mService; |
| IWallpaperEngine mEngine; |
| WallpaperData mWallpaper; |
| IRemoteCallback mReply; |
| |
| public WallpaperConnection(WallpaperInfo info, WallpaperData wallpaper) { |
| mInfo = info; |
| mWallpaper = wallpaper; |
| } |
| |
| @Override |
| public void onServiceConnected(ComponentName name, IBinder service) { |
| synchronized (mLock) { |
| if (mWallpaper.connection == this) { |
| mWallpaper.lastDiedTime = SystemClock.uptimeMillis(); |
| mService = IWallpaperService.Stub.asInterface(service); |
| attachServiceLocked(this, mWallpaper); |
| // XXX should probably do saveSettingsLocked() later |
| // when we have an engine, but I'm not sure about |
| // locking there and anyway we always need to be able to |
| // recover if there is something wrong. |
| saveSettingsLocked(mWallpaper); |
| } |
| } |
| } |
| |
| @Override |
| public void onServiceDisconnected(ComponentName name) { |
| synchronized (mLock) { |
| mService = null; |
| mEngine = null; |
| if (mWallpaper.connection == this) { |
| Slog.w(TAG, "Wallpaper service gone: " + mWallpaper.wallpaperComponent); |
| if (!mWallpaper.wallpaperUpdating |
| && (mWallpaper.lastDiedTime + MIN_WALLPAPER_CRASH_TIME) |
| > SystemClock.uptimeMillis() |
| && mWallpaper.userId == mCurrentUserId) { |
| Slog.w(TAG, "Reverting to built-in wallpaper!"); |
| clearWallpaperLocked(true, mWallpaper.userId, null); |
| } |
| } |
| } |
| } |
| |
| @Override |
| public void attachEngine(IWallpaperEngine engine) { |
| synchronized (mLock) { |
| mEngine = engine; |
| } |
| } |
| |
| @Override |
| public void engineShown(IWallpaperEngine engine) { |
| synchronized (mLock) { |
| if (mReply != null) { |
| long ident = Binder.clearCallingIdentity(); |
| try { |
| mReply.sendResult(null); |
| } catch (RemoteException e) { |
| Binder.restoreCallingIdentity(ident); |
| } |
| mReply = null; |
| } |
| } |
| } |
| |
| @Override |
| public ParcelFileDescriptor setWallpaper(String name) { |
| synchronized (mLock) { |
| if (mWallpaper.connection == this) { |
| return updateWallpaperBitmapLocked(name, mWallpaper); |
| } |
| return null; |
| } |
| } |
| } |
| |
| class MyPackageMonitor extends PackageMonitor { |
| @Override |
| public void onPackageUpdateFinished(String packageName, int uid) { |
| synchronized (mLock) { |
| if (mCurrentUserId != getChangingUserId()) { |
| return; |
| } |
| WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); |
| if (wallpaper != null) { |
| if (wallpaper.wallpaperComponent != null |
| && wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { |
| wallpaper.wallpaperUpdating = false; |
| ComponentName comp = wallpaper.wallpaperComponent; |
| clearWallpaperComponentLocked(wallpaper); |
| if (!bindWallpaperComponentLocked(comp, false, false, |
| wallpaper, null)) { |
| Slog.w(TAG, "Wallpaper no longer available; reverting to default"); |
| clearWallpaperLocked(false, wallpaper.userId, null); |
| } |
| } |
| } |
| } |
| } |
| |
| @Override |
| public void onPackageModified(String packageName) { |
| synchronized (mLock) { |
| if (mCurrentUserId != getChangingUserId()) { |
| return; |
| } |
| WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); |
| if (wallpaper != null) { |
| if (wallpaper.wallpaperComponent == null |
| || !wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { |
| return; |
| } |
| doPackagesChangedLocked(true, wallpaper); |
| } |
| } |
| } |
| |
| @Override |
| public void onPackageUpdateStarted(String packageName, int uid) { |
| synchronized (mLock) { |
| if (mCurrentUserId != getChangingUserId()) { |
| return; |
| } |
| WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); |
| if (wallpaper != null) { |
| if (wallpaper.wallpaperComponent != null |
| && wallpaper.wallpaperComponent.getPackageName().equals(packageName)) { |
| wallpaper.wallpaperUpdating = true; |
| } |
| } |
| } |
| } |
| |
| @Override |
| public boolean onHandleForceStop(Intent intent, String[] packages, int uid, boolean doit) { |
| synchronized (mLock) { |
| boolean changed = false; |
| if (mCurrentUserId != getChangingUserId()) { |
| return false; |
| } |
| WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); |
| if (wallpaper != null) { |
| boolean res = doPackagesChangedLocked(doit, wallpaper); |
| changed |= res; |
| } |
| return changed; |
| } |
| } |
| |
| @Override |
| public void onSomePackagesChanged() { |
| synchronized (mLock) { |
| if (mCurrentUserId != getChangingUserId()) { |
| return; |
| } |
| WallpaperData wallpaper = mWallpaperMap.get(mCurrentUserId); |
| if (wallpaper != null) { |
| doPackagesChangedLocked(true, wallpaper); |
| } |
| } |
| } |
| |
| boolean doPackagesChangedLocked(boolean doit, WallpaperData wallpaper) { |
| boolean changed = false; |
| if (wallpaper.wallpaperComponent != null) { |
| int change = isPackageDisappearing(wallpaper.wallpaperComponent |
| .getPackageName()); |
| if (change == PACKAGE_PERMANENT_CHANGE |
| || change == PACKAGE_TEMPORARY_CHANGE) { |
| changed = true; |
| if (doit) { |
| Slog.w(TAG, "Wallpaper uninstalled, removing: " |
| + wallpaper.wallpaperComponent); |
| clearWallpaperLocked(false, wallpaper.userId, null); |
| } |
| } |
| } |
| if (wallpaper.nextWallpaperComponent != null) { |
| int change = isPackageDisappearing(wallpaper.nextWallpaperComponent |
| .getPackageName()); |
| if (change == PACKAGE_PERMANENT_CHANGE |
| || change == PACKAGE_TEMPORARY_CHANGE) { |
| wallpaper.nextWallpaperComponent = null; |
| } |
| } |
| if (wallpaper.wallpaperComponent != null |
| && isPackageModified(wallpaper.wallpaperComponent.getPackageName())) { |
| try { |
| mContext.getPackageManager().getServiceInfo( |
| wallpaper.wallpaperComponent, 0); |
| } catch (NameNotFoundException e) { |
| Slog.w(TAG, "Wallpaper component gone, removing: " |
| + wallpaper.wallpaperComponent); |
| clearWallpaperLocked(false, wallpaper.userId, null); |
| } |
| } |
| if (wallpaper.nextWallpaperComponent != null |
| && isPackageModified(wallpaper.nextWallpaperComponent.getPackageName())) { |
| try { |
| mContext.getPackageManager().getServiceInfo( |
| wallpaper.nextWallpaperComponent, 0); |
| } catch (NameNotFoundException e) { |
| wallpaper.nextWallpaperComponent = null; |
| } |
| } |
| return changed; |
| } |
| } |
| |
| public WallpaperManagerService(Context context) { |
| if (DEBUG) Slog.v(TAG, "WallpaperService startup"); |
| mContext = context; |
| mIWindowManager = IWindowManager.Stub.asInterface( |
| ServiceManager.getService(Context.WINDOW_SERVICE)); |
| mIPackageManager = AppGlobals.getPackageManager(); |
| mMonitor = new MyPackageMonitor(); |
| mMonitor.register(context, null, UserHandle.ALL, true); |
| getWallpaperDir(UserHandle.USER_OWNER).mkdirs(); |
| loadSettingsLocked(UserHandle.USER_OWNER); |
| } |
| |
| private static File getWallpaperDir(int userId) { |
| return Environment.getUserSystemDirectory(userId); |
| } |
| |
| @Override |
| protected void finalize() throws Throwable { |
| super.finalize(); |
| for (int i = 0; i < mWallpaperMap.size(); i++) { |
| WallpaperData wallpaper = mWallpaperMap.valueAt(i); |
| wallpaper.wallpaperObserver.stopWatching(); |
| } |
| } |
| |
| public void systemReady() { |
| if (DEBUG) Slog.v(TAG, "systemReady"); |
| WallpaperData wallpaper = mWallpaperMap.get(UserHandle.USER_OWNER); |
| switchWallpaper(wallpaper, null); |
| wallpaper.wallpaperObserver = new WallpaperObserver(wallpaper); |
| wallpaper.wallpaperObserver.startWatching(); |
| |
| IntentFilter userFilter = new IntentFilter(); |
| userFilter.addAction(Intent.ACTION_USER_REMOVED); |
| userFilter.addAction(Intent.ACTION_USER_STOPPING); |
| mContext.registerReceiver(new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| String action = intent.getAction(); |
| if (Intent.ACTION_USER_REMOVED.equals(action)) { |
| onRemoveUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, |
| UserHandle.USER_NULL)); |
| } |
| // TODO: Race condition causing problems when cleaning up on stopping a user. |
| // Comment this out for now. |
| // else if (Intent.ACTION_USER_STOPPING.equals(action)) { |
| // onStoppingUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, |
| // UserHandle.USER_NULL)); |
| // } |
| } |
| }, userFilter); |
| |
| try { |
| ActivityManagerNative.getDefault().registerUserSwitchObserver( |
| new IUserSwitchObserver.Stub() { |
| @Override |
| public void onUserSwitching(int newUserId, IRemoteCallback reply) { |
| switchUser(newUserId, reply); |
| } |
| |
| @Override |
| public void onUserSwitchComplete(int newUserId) throws RemoteException { |
| } |
| }); |
| } catch (RemoteException e) { |
| // TODO Auto-generated catch block |
| e.printStackTrace(); |
| } |
| } |
| |
| String getName() { |
| synchronized (mLock) { |
| return mWallpaperMap.get(0).name; |
| } |
| } |
| |
| void onStoppingUser(int userId) { |
| if (userId < 1) return; |
| synchronized (mLock) { |
| WallpaperData wallpaper = mWallpaperMap.get(userId); |
| if (wallpaper != null) { |
| if (wallpaper.wallpaperObserver != null) { |
| wallpaper.wallpaperObserver.stopWatching(); |
| wallpaper.wallpaperObserver = null; |
| } |
| mWallpaperMap.remove(userId); |
| } |
| } |
| } |
| |
| void onRemoveUser(int userId) { |
| if (userId < 1) return; |
| synchronized (mLock) { |
| onStoppingUser(userId); |
| File wallpaperFile = new File(getWallpaperDir(userId), WALLPAPER); |
| wallpaperFile.delete(); |
| File wallpaperInfoFile = new File(getWallpaperDir(userId), WALLPAPER_INFO); |
| wallpaperInfoFile.delete(); |
| } |
| } |
| |
| void switchUser(int userId, IRemoteCallback reply) { |
| synchronized (mLock) { |
| mCurrentUserId = userId; |
| WallpaperData wallpaper = mWallpaperMap.get(userId); |
| if (wallpaper == null) { |
| wallpaper = new WallpaperData(userId); |
| mWallpaperMap.put(userId, wallpaper); |
| loadSettingsLocked(userId); |
| } |
| // Not started watching yet, in case wallpaper data was loaded for other reasons. |
| if (wallpaper.wallpaperObserver == null) { |
| wallpaper.wallpaperObserver = new WallpaperObserver(wallpaper); |
| wallpaper.wallpaperObserver.startWatching(); |
| } |
| switchWallpaper(wallpaper, reply); |
| } |
| } |
| |
| void switchWallpaper(WallpaperData wallpaper, IRemoteCallback reply) { |
| synchronized (mLock) { |
| RuntimeException e = null; |
| try { |
| ComponentName cname = wallpaper.wallpaperComponent != null ? |
| wallpaper.wallpaperComponent : wallpaper.nextWallpaperComponent; |
| if (bindWallpaperComponentLocked(cname, true, false, wallpaper, reply)) { |
| return; |
| } |
| } catch (RuntimeException e1) { |
| e = e1; |
| } |
| Slog.w(TAG, "Failure starting previous wallpaper", e); |
| clearWallpaperLocked(false, wallpaper.userId, reply); |
| } |
| } |
| |
| public void clearWallpaper() { |
| if (DEBUG) Slog.v(TAG, "clearWallpaper"); |
| synchronized (mLock) { |
| clearWallpaperLocked(false, UserHandle.getCallingUserId(), null); |
| } |
| } |
| |
| void clearWallpaperLocked(boolean defaultFailed, int userId, IRemoteCallback reply) { |
| WallpaperData wallpaper = mWallpaperMap.get(userId); |
| File f = new File(getWallpaperDir(userId), WALLPAPER); |
| if (f.exists()) { |
| f.delete(); |
| } |
| final long ident = Binder.clearCallingIdentity(); |
| RuntimeException e = null; |
| try { |
| wallpaper.imageWallpaperPending = false; |
| if (userId != mCurrentUserId) return; |
| if (bindWallpaperComponentLocked(defaultFailed |
| ? IMAGE_WALLPAPER |
| : null, true, false, wallpaper, reply)) { |
| return; |
| } |
| } catch (IllegalArgumentException e1) { |
| e = e1; |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| |
| // This can happen if the default wallpaper component doesn't |
| // exist. This should be a system configuration problem, but |
| // let's not let it crash the system and just live with no |
| // wallpaper. |
| Slog.e(TAG, "Default wallpaper component not found!", e); |
| clearWallpaperComponentLocked(wallpaper); |
| if (reply != null) { |
| try { |
| reply.sendResult(null); |
| } catch (RemoteException e1) { |
| } |
| } |
| } |
| |
| public boolean hasNamedWallpaper(String name) { |
| synchronized (mLock) { |
| List<UserInfo> users; |
| long ident = Binder.clearCallingIdentity(); |
| try { |
| users = ((UserManager) mContext.getSystemService(Context.USER_SERVICE)).getUsers(); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| for (UserInfo user: users) { |
| WallpaperData wd = mWallpaperMap.get(user.id); |
| if (wd == null) { |
| // User hasn't started yet, so load her settings to peek at the wallpaper |
| loadSettingsLocked(user.id); |
| wd = mWallpaperMap.get(user.id); |
| } |
| if (wd != null && name.equals(wd.name)) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| public void setDimensionHints(int width, int height) throws RemoteException { |
| checkPermission(android.Manifest.permission.SET_WALLPAPER_HINTS); |
| synchronized (mLock) { |
| int userId = UserHandle.getCallingUserId(); |
| WallpaperData wallpaper = mWallpaperMap.get(userId); |
| if (wallpaper == null) { |
| throw new IllegalStateException("Wallpaper not yet initialized for user " + userId); |
| } |
| if (width <= 0 || height <= 0) { |
| throw new IllegalArgumentException("width and height must be > 0"); |
| } |
| |
| if (width != wallpaper.width || height != wallpaper.height) { |
| wallpaper.width = width; |
| wallpaper.height = height; |
| saveSettingsLocked(wallpaper); |
| if (mCurrentUserId != userId) return; // Don't change the properties now |
| if (wallpaper.connection != null) { |
| if (wallpaper.connection.mEngine != null) { |
| try { |
| wallpaper.connection.mEngine.setDesiredSize( |
| width, height); |
| } catch (RemoteException e) { |
| } |
| notifyCallbacksLocked(wallpaper); |
| } |
| } |
| } |
| } |
| } |
| |
| public int getWidthHint() throws RemoteException { |
| synchronized (mLock) { |
| WallpaperData wallpaper = mWallpaperMap.get(UserHandle.getCallingUserId()); |
| return wallpaper.width; |
| } |
| } |
| |
| public int getHeightHint() throws RemoteException { |
| synchronized (mLock) { |
| WallpaperData wallpaper = mWallpaperMap.get(UserHandle.getCallingUserId()); |
| return wallpaper.height; |
| } |
| } |
| |
| public ParcelFileDescriptor getWallpaper(IWallpaperManagerCallback cb, |
| Bundle outParams) { |
| synchronized (mLock) { |
| // This returns the current user's wallpaper, if called by a system service. Else it |
| // returns the wallpaper for the calling user. |
| int callingUid = Binder.getCallingUid(); |
| int wallpaperUserId = 0; |
| if (callingUid == android.os.Process.SYSTEM_UID) { |
| wallpaperUserId = mCurrentUserId; |
| } else { |
| wallpaperUserId = UserHandle.getUserId(callingUid); |
| } |
| WallpaperData wallpaper = mWallpaperMap.get(wallpaperUserId); |
| try { |
| if (outParams != null) { |
| outParams.putInt("width", wallpaper.width); |
| outParams.putInt("height", wallpaper.height); |
| } |
| wallpaper.callbacks.register(cb); |
| File f = new File(getWallpaperDir(wallpaperUserId), WALLPAPER); |
| if (!f.exists()) { |
| return null; |
| } |
| return ParcelFileDescriptor.open(f, MODE_READ_ONLY); |
| } catch (FileNotFoundException e) { |
| /* Shouldn't happen as we check to see if the file exists */ |
| Slog.w(TAG, "Error getting wallpaper", e); |
| } |
| return null; |
| } |
| } |
| |
| public WallpaperInfo getWallpaperInfo() { |
| int userId = UserHandle.getCallingUserId(); |
| synchronized (mLock) { |
| WallpaperData wallpaper = mWallpaperMap.get(userId); |
| if (wallpaper.connection != null) { |
| return wallpaper.connection.mInfo; |
| } |
| return null; |
| } |
| } |
| |
| public ParcelFileDescriptor setWallpaper(String name) { |
| checkPermission(android.Manifest.permission.SET_WALLPAPER); |
| synchronized (mLock) { |
| if (DEBUG) Slog.v(TAG, "setWallpaper"); |
| int userId = UserHandle.getCallingUserId(); |
| WallpaperData wallpaper = mWallpaperMap.get(userId); |
| if (wallpaper == null) { |
| throw new IllegalStateException("Wallpaper not yet initialized for user " + userId); |
| } |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| ParcelFileDescriptor pfd = updateWallpaperBitmapLocked(name, wallpaper); |
| if (pfd != null) { |
| wallpaper.imageWallpaperPending = true; |
| } |
| return pfd; |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| } |
| |
| ParcelFileDescriptor updateWallpaperBitmapLocked(String name, WallpaperData wallpaper) { |
| if (name == null) name = ""; |
| try { |
| File dir = getWallpaperDir(wallpaper.userId); |
| if (!dir.exists()) { |
| dir.mkdir(); |
| FileUtils.setPermissions( |
| dir.getPath(), |
| FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH, |
| -1, -1); |
| } |
| File file = new File(dir, WALLPAPER); |
| ParcelFileDescriptor fd = ParcelFileDescriptor.open(file, |
| MODE_CREATE|MODE_READ_WRITE); |
| if (!SELinux.restorecon(file)) { |
| return null; |
| } |
| wallpaper.name = name; |
| return fd; |
| } catch (FileNotFoundException e) { |
| Slog.w(TAG, "Error setting wallpaper", e); |
| } |
| return null; |
| } |
| |
| public void setWallpaperComponent(ComponentName name) { |
| checkPermission(android.Manifest.permission.SET_WALLPAPER_COMPONENT); |
| synchronized (mLock) { |
| if (DEBUG) Slog.v(TAG, "setWallpaperComponent name=" + name); |
| int userId = UserHandle.getCallingUserId(); |
| WallpaperData wallpaper = mWallpaperMap.get(userId); |
| if (wallpaper == null) { |
| throw new IllegalStateException("Wallpaper not yet initialized for user " + userId); |
| } |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| wallpaper.imageWallpaperPending = false; |
| bindWallpaperComponentLocked(name, false, true, wallpaper, null); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| } |
| |
| boolean bindWallpaperComponentLocked(ComponentName componentName, boolean force, |
| boolean fromUser, WallpaperData wallpaper, IRemoteCallback reply) { |
| if (DEBUG) Slog.v(TAG, "bindWallpaperComponentLocked: componentName=" + componentName); |
| // Has the component changed? |
| if (!force) { |
| if (wallpaper.connection != null) { |
| if (wallpaper.wallpaperComponent == null) { |
| if (componentName == null) { |
| if (DEBUG) Slog.v(TAG, "bindWallpaperComponentLocked: still using default"); |
| // Still using default wallpaper. |
| return true; |
| } |
| } else if (wallpaper.wallpaperComponent.equals(componentName)) { |
| // Changing to same wallpaper. |
| if (DEBUG) Slog.v(TAG, "same wallpaper"); |
| return true; |
| } |
| } |
| } |
| |
| try { |
| if (componentName == null) { |
| String defaultComponent = |
| mContext.getString(com.android.internal.R.string.default_wallpaper_component); |
| if (defaultComponent != null) { |
| // See if there is a default wallpaper component specified |
| componentName = ComponentName.unflattenFromString(defaultComponent); |
| if (DEBUG) Slog.v(TAG, "Use default component wallpaper:" + componentName); |
| } |
| if (componentName == null) { |
| // Fall back to static image wallpaper |
| componentName = IMAGE_WALLPAPER; |
| //clearWallpaperComponentLocked(); |
| //return; |
| if (DEBUG) Slog.v(TAG, "Using image wallpaper"); |
| } |
| } |
| int serviceUserId = wallpaper.userId; |
| ServiceInfo si = mIPackageManager.getServiceInfo(componentName, |
| PackageManager.GET_META_DATA | PackageManager.GET_PERMISSIONS, serviceUserId); |
| if (!android.Manifest.permission.BIND_WALLPAPER.equals(si.permission)) { |
| String msg = "Selected service does not require " |
| + android.Manifest.permission.BIND_WALLPAPER |
| + ": " + componentName; |
| if (fromUser) { |
| throw new SecurityException(msg); |
| } |
| Slog.w(TAG, msg); |
| return false; |
| } |
| |
| WallpaperInfo wi = null; |
| |
| Intent intent = new Intent(WallpaperService.SERVICE_INTERFACE); |
| if (componentName != null && !componentName.equals(IMAGE_WALLPAPER)) { |
| // Make sure the selected service is actually a wallpaper service. |
| List<ResolveInfo> ris = |
| mIPackageManager.queryIntentServices(intent, |
| intent.resolveTypeIfNeeded(mContext.getContentResolver()), |
| PackageManager.GET_META_DATA, serviceUserId); |
| for (int i=0; i<ris.size(); i++) { |
| ServiceInfo rsi = ris.get(i).serviceInfo; |
| if (rsi.name.equals(si.name) && |
| rsi.packageName.equals(si.packageName)) { |
| try { |
| wi = new WallpaperInfo(mContext, ris.get(i)); |
| } catch (XmlPullParserException e) { |
| if (fromUser) { |
| throw new IllegalArgumentException(e); |
| } |
| Slog.w(TAG, e); |
| return false; |
| } catch (IOException e) { |
| if (fromUser) { |
| throw new IllegalArgumentException(e); |
| } |
| Slog.w(TAG, e); |
| return false; |
| } |
| break; |
| } |
| } |
| if (wi == null) { |
| String msg = "Selected service is not a wallpaper: " |
| + componentName; |
| if (fromUser) { |
| throw new SecurityException(msg); |
| } |
| Slog.w(TAG, msg); |
| return false; |
| } |
| } |
| |
| // Bind the service! |
| if (DEBUG) Slog.v(TAG, "Binding to:" + componentName); |
| WallpaperConnection newConn = new WallpaperConnection(wi, wallpaper); |
| intent.setComponent(componentName); |
| intent.putExtra(Intent.EXTRA_CLIENT_LABEL, |
| com.android.internal.R.string.wallpaper_binding_label); |
| intent.putExtra(Intent.EXTRA_CLIENT_INTENT, PendingIntent.getActivityAsUser( |
| mContext, 0, |
| Intent.createChooser(new Intent(Intent.ACTION_SET_WALLPAPER), |
| mContext.getText(com.android.internal.R.string.chooser_wallpaper)), |
| 0, null, new UserHandle(serviceUserId))); |
| if (!mContext.bindService(intent, newConn, Context.BIND_AUTO_CREATE, serviceUserId)) { |
| String msg = "Unable to bind service: " |
| + componentName; |
| if (fromUser) { |
| throw new IllegalArgumentException(msg); |
| } |
| Slog.w(TAG, msg); |
| return false; |
| } |
| if (wallpaper.userId == mCurrentUserId && mLastWallpaper != null) { |
| detachWallpaperLocked(mLastWallpaper); |
| } |
| wallpaper.wallpaperComponent = componentName; |
| wallpaper.connection = newConn; |
| wallpaper.lastDiedTime = SystemClock.uptimeMillis(); |
| newConn.mReply = reply; |
| try { |
| if (wallpaper.userId == mCurrentUserId) { |
| if (DEBUG) |
| Slog.v(TAG, "Adding window token: " + newConn.mToken); |
| mIWindowManager.addWindowToken(newConn.mToken, |
| WindowManager.LayoutParams.TYPE_WALLPAPER); |
| mLastWallpaper = wallpaper; |
| } |
| } catch (RemoteException e) { |
| } |
| } catch (RemoteException e) { |
| String msg = "Remote exception for " + componentName + "\n" + e; |
| if (fromUser) { |
| throw new IllegalArgumentException(msg); |
| } |
| Slog.w(TAG, msg); |
| return false; |
| } |
| return true; |
| } |
| |
| void detachWallpaperLocked(WallpaperData wallpaper) { |
| if (wallpaper.connection != null) { |
| if (wallpaper.connection.mReply != null) { |
| try { |
| wallpaper.connection.mReply.sendResult(null); |
| } catch (RemoteException e) { |
| } |
| wallpaper.connection.mReply = null; |
| } |
| if (wallpaper.connection.mEngine != null) { |
| try { |
| wallpaper.connection.mEngine.destroy(); |
| } catch (RemoteException e) { |
| } |
| } |
| mContext.unbindService(wallpaper.connection); |
| try { |
| if (DEBUG) |
| Slog.v(TAG, "Removing window token: " + wallpaper.connection.mToken); |
| mIWindowManager.removeWindowToken(wallpaper.connection.mToken); |
| } catch (RemoteException e) { |
| } |
| wallpaper.connection.mService = null; |
| wallpaper.connection.mEngine = null; |
| wallpaper.connection = null; |
| } |
| } |
| |
| void clearWallpaperComponentLocked(WallpaperData wallpaper) { |
| wallpaper.wallpaperComponent = null; |
| detachWallpaperLocked(wallpaper); |
| } |
| |
| void attachServiceLocked(WallpaperConnection conn, WallpaperData wallpaper) { |
| try { |
| conn.mService.attach(conn, conn.mToken, |
| WindowManager.LayoutParams.TYPE_WALLPAPER, false, |
| wallpaper.width, wallpaper.height); |
| } catch (RemoteException e) { |
| Slog.w(TAG, "Failed attaching wallpaper; clearing", e); |
| if (!wallpaper.wallpaperUpdating) { |
| bindWallpaperComponentLocked(null, false, false, wallpaper, null); |
| } |
| } |
| } |
| |
| private void notifyCallbacksLocked(WallpaperData wallpaper) { |
| final int n = wallpaper.callbacks.beginBroadcast(); |
| for (int i = 0; i < n; i++) { |
| try { |
| wallpaper.callbacks.getBroadcastItem(i).onWallpaperChanged(); |
| } catch (RemoteException e) { |
| |
| // The RemoteCallbackList will take care of removing |
| // the dead object for us. |
| } |
| } |
| wallpaper.callbacks.finishBroadcast(); |
| final Intent intent = new Intent(Intent.ACTION_WALLPAPER_CHANGED); |
| mContext.sendBroadcastAsUser(intent, new UserHandle(mCurrentUserId)); |
| } |
| |
| private void checkPermission(String permission) { |
| if (PackageManager.PERMISSION_GRANTED!= mContext.checkCallingOrSelfPermission(permission)) { |
| throw new SecurityException("Access denied to process: " + Binder.getCallingPid() |
| + ", must have permission " + permission); |
| } |
| } |
| |
| private static JournaledFile makeJournaledFile(int userId) { |
| final String base = new File(getWallpaperDir(userId), WALLPAPER_INFO).getAbsolutePath(); |
| return new JournaledFile(new File(base), new File(base + ".tmp")); |
| } |
| |
| private void saveSettingsLocked(WallpaperData wallpaper) { |
| JournaledFile journal = makeJournaledFile(wallpaper.userId); |
| FileOutputStream stream = null; |
| try { |
| stream = new FileOutputStream(journal.chooseForWrite(), false); |
| XmlSerializer out = new FastXmlSerializer(); |
| out.setOutput(stream, "utf-8"); |
| out.startDocument(null, true); |
| |
| out.startTag(null, "wp"); |
| out.attribute(null, "width", Integer.toString(wallpaper.width)); |
| out.attribute(null, "height", Integer.toString(wallpaper.height)); |
| out.attribute(null, "name", wallpaper.name); |
| if (wallpaper.wallpaperComponent != null |
| && !wallpaper.wallpaperComponent.equals(IMAGE_WALLPAPER)) { |
| out.attribute(null, "component", |
| wallpaper.wallpaperComponent.flattenToShortString()); |
| } |
| out.endTag(null, "wp"); |
| |
| out.endDocument(); |
| stream.close(); |
| journal.commit(); |
| } catch (IOException e) { |
| try { |
| if (stream != null) { |
| stream.close(); |
| } |
| } catch (IOException ex) { |
| // Ignore |
| } |
| journal.rollback(); |
| } |
| } |
| |
| private void migrateFromOld() { |
| File oldWallpaper = new File(WallpaperBackupHelper.WALLPAPER_IMAGE_KEY); |
| File oldInfo = new File(WallpaperBackupHelper.WALLPAPER_INFO_KEY); |
| if (oldWallpaper.exists()) { |
| File newWallpaper = new File(getWallpaperDir(0), WALLPAPER); |
| oldWallpaper.renameTo(newWallpaper); |
| } |
| if (oldInfo.exists()) { |
| File newInfo = new File(getWallpaperDir(0), WALLPAPER_INFO); |
| oldInfo.renameTo(newInfo); |
| } |
| } |
| |
| private void loadSettingsLocked(int userId) { |
| if (DEBUG) Slog.v(TAG, "loadSettingsLocked"); |
| |
| JournaledFile journal = makeJournaledFile(userId); |
| FileInputStream stream = null; |
| File file = journal.chooseForRead(); |
| if (!file.exists()) { |
| // This should only happen one time, when upgrading from a legacy system |
| migrateFromOld(); |
| } |
| WallpaperData wallpaper = mWallpaperMap.get(userId); |
| if (wallpaper == null) { |
| wallpaper = new WallpaperData(userId); |
| mWallpaperMap.put(userId, wallpaper); |
| } |
| boolean success = false; |
| try { |
| stream = new FileInputStream(file); |
| XmlPullParser parser = Xml.newPullParser(); |
| parser.setInput(stream, null); |
| |
| int type; |
| do { |
| type = parser.next(); |
| if (type == XmlPullParser.START_TAG) { |
| String tag = parser.getName(); |
| if ("wp".equals(tag)) { |
| wallpaper.width = Integer.parseInt(parser.getAttributeValue(null, "width")); |
| wallpaper.height = Integer.parseInt(parser |
| .getAttributeValue(null, "height")); |
| wallpaper.name = parser.getAttributeValue(null, "name"); |
| String comp = parser.getAttributeValue(null, "component"); |
| wallpaper.nextWallpaperComponent = comp != null |
| ? ComponentName.unflattenFromString(comp) |
| : null; |
| if (wallpaper.nextWallpaperComponent == null |
| || "android".equals(wallpaper.nextWallpaperComponent |
| .getPackageName())) { |
| wallpaper.nextWallpaperComponent = IMAGE_WALLPAPER; |
| } |
| |
| if (DEBUG) { |
| Slog.v(TAG, "mWidth:" + wallpaper.width); |
| Slog.v(TAG, "mHeight:" + wallpaper.height); |
| Slog.v(TAG, "mName:" + wallpaper.name); |
| Slog.v(TAG, "mNextWallpaperComponent:" |
| + wallpaper.nextWallpaperComponent); |
| } |
| } |
| } |
| } while (type != XmlPullParser.END_DOCUMENT); |
| success = true; |
| } catch (FileNotFoundException e) { |
| Slog.w(TAG, "no current wallpaper -- first boot?"); |
| } catch (NullPointerException e) { |
| Slog.w(TAG, "failed parsing " + file + " " + e); |
| } catch (NumberFormatException e) { |
| Slog.w(TAG, "failed parsing " + file + " " + e); |
| } catch (XmlPullParserException e) { |
| Slog.w(TAG, "failed parsing " + file + " " + e); |
| } catch (IOException e) { |
| Slog.w(TAG, "failed parsing " + file + " " + e); |
| } catch (IndexOutOfBoundsException e) { |
| Slog.w(TAG, "failed parsing " + file + " " + e); |
| } |
| try { |
| if (stream != null) { |
| stream.close(); |
| } |
| } catch (IOException e) { |
| // Ignore |
| } |
| |
| if (!success) { |
| wallpaper.width = -1; |
| wallpaper.height = -1; |
| wallpaper.name = ""; |
| } |
| |
| // We always want to have some reasonable width hint. |
| WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE); |
| Display d = wm.getDefaultDisplay(); |
| int baseSize = d.getMaximumSizeDimension(); |
| if (wallpaper.width < baseSize) { |
| wallpaper.width = baseSize; |
| } |
| if (wallpaper.height < baseSize) { |
| wallpaper.height = baseSize; |
| } |
| } |
| |
| // Called by SystemBackupAgent after files are restored to disk. |
| void settingsRestored() { |
| // TODO: If necessary, make it work for secondary users as well. This currently assumes |
| // restores only to the primary user |
| if (DEBUG) Slog.v(TAG, "settingsRestored"); |
| WallpaperData wallpaper = null; |
| boolean success = false; |
| synchronized (mLock) { |
| loadSettingsLocked(0); |
| wallpaper = mWallpaperMap.get(0); |
| if (wallpaper.nextWallpaperComponent != null |
| && !wallpaper.nextWallpaperComponent.equals(IMAGE_WALLPAPER)) { |
| if (!bindWallpaperComponentLocked(wallpaper.nextWallpaperComponent, false, false, |
| wallpaper, null)) { |
| // No such live wallpaper or other failure; fall back to the default |
| // live wallpaper (since the profile being restored indicated that the |
| // user had selected a live rather than static one). |
| bindWallpaperComponentLocked(null, false, false, wallpaper, null); |
| } |
| success = true; |
| } else { |
| // If there's a wallpaper name, we use that. If that can't be loaded, then we |
| // use the default. |
| if ("".equals(wallpaper.name)) { |
| if (DEBUG) Slog.v(TAG, "settingsRestored: name is empty"); |
| success = true; |
| } else { |
| if (DEBUG) Slog.v(TAG, "settingsRestored: attempting to restore named resource"); |
| success = restoreNamedResourceLocked(wallpaper); |
| } |
| if (DEBUG) Slog.v(TAG, "settingsRestored: success=" + success); |
| if (success) { |
| bindWallpaperComponentLocked(wallpaper.nextWallpaperComponent, false, false, |
| wallpaper, null); |
| } |
| } |
| } |
| |
| if (!success) { |
| Slog.e(TAG, "Failed to restore wallpaper: '" + wallpaper.name + "'"); |
| wallpaper.name = ""; |
| getWallpaperDir(0).delete(); |
| } |
| |
| synchronized (mLock) { |
| saveSettingsLocked(wallpaper); |
| } |
| } |
| |
| boolean restoreNamedResourceLocked(WallpaperData wallpaper) { |
| if (wallpaper.name.length() > 4 && "res:".equals(wallpaper.name.substring(0, 4))) { |
| String resName = wallpaper.name.substring(4); |
| |
| String pkg = null; |
| int colon = resName.indexOf(':'); |
| if (colon > 0) { |
| pkg = resName.substring(0, colon); |
| } |
| |
| String ident = null; |
| int slash = resName.lastIndexOf('/'); |
| if (slash > 0) { |
| ident = resName.substring(slash+1); |
| } |
| |
| String type = null; |
| if (colon > 0 && slash > 0 && (slash-colon) > 1) { |
| type = resName.substring(colon+1, slash); |
| } |
| |
| if (pkg != null && ident != null && type != null) { |
| int resId = -1; |
| InputStream res = null; |
| FileOutputStream fos = null; |
| try { |
| Context c = mContext.createPackageContext(pkg, Context.CONTEXT_RESTRICTED); |
| Resources r = c.getResources(); |
| resId = r.getIdentifier(resName, null, null); |
| if (resId == 0) { |
| Slog.e(TAG, "couldn't resolve identifier pkg=" + pkg + " type=" + type |
| + " ident=" + ident); |
| return false; |
| } |
| |
| res = r.openRawResource(resId); |
| if (wallpaper.wallpaperFile.exists()) { |
| wallpaper.wallpaperFile.delete(); |
| } |
| fos = new FileOutputStream(wallpaper.wallpaperFile); |
| |
| byte[] buffer = new byte[32768]; |
| int amt; |
| while ((amt=res.read(buffer)) > 0) { |
| fos.write(buffer, 0, amt); |
| } |
| // mWallpaperObserver will notice the close and send the change broadcast |
| |
| Slog.v(TAG, "Restored wallpaper: " + resName); |
| return true; |
| } catch (NameNotFoundException e) { |
| Slog.e(TAG, "Package name " + pkg + " not found"); |
| } catch (Resources.NotFoundException e) { |
| Slog.e(TAG, "Resource not found: " + resId); |
| } catch (IOException e) { |
| Slog.e(TAG, "IOException while restoring wallpaper ", e); |
| } finally { |
| if (res != null) { |
| try { |
| res.close(); |
| } catch (IOException ex) {} |
| } |
| if (fos != null) { |
| FileUtils.sync(fos); |
| try { |
| fos.close(); |
| } catch (IOException ex) {} |
| } |
| } |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP) |
| != PackageManager.PERMISSION_GRANTED) { |
| |
| pw.println("Permission Denial: can't dump wallpaper service from from pid=" |
| + Binder.getCallingPid() |
| + ", uid=" + Binder.getCallingUid()); |
| return; |
| } |
| |
| synchronized (mLock) { |
| pw.println("Current Wallpaper Service state:"); |
| for (int i = 0; i < mWallpaperMap.size(); i++) { |
| WallpaperData wallpaper = mWallpaperMap.valueAt(i); |
| pw.println(" User " + wallpaper.userId + ":"); |
| pw.print(" mWidth="); |
| pw.print(wallpaper.width); |
| pw.print(" mHeight="); |
| pw.println(wallpaper.height); |
| pw.print(" mName="); |
| pw.println(wallpaper.name); |
| pw.print(" mWallpaperComponent="); |
| pw.println(wallpaper.wallpaperComponent); |
| if (wallpaper.connection != null) { |
| WallpaperConnection conn = wallpaper.connection; |
| pw.print(" Wallpaper connection "); |
| pw.print(conn); |
| pw.println(":"); |
| if (conn.mInfo != null) { |
| pw.print(" mInfo.component="); |
| pw.println(conn.mInfo.getComponent()); |
| } |
| pw.print(" mToken="); |
| pw.println(conn.mToken); |
| pw.print(" mService="); |
| pw.println(conn.mService); |
| pw.print(" mEngine="); |
| pw.println(conn.mEngine); |
| pw.print(" mLastDiedTime="); |
| pw.println(wallpaper.lastDiedTime - SystemClock.uptimeMillis()); |
| } |
| } |
| } |
| } |
| } |
