diff options
Diffstat (limited to 'services/core/java/com/android/server/wallpaper/WallpaperManagerService.java')
| -rw-r--r-- | services/core/java/com/android/server/wallpaper/WallpaperManagerService.java | 1353 |
1 files changed, 1353 insertions, 0 deletions
diff --git a/services/core/java/com/android/server/wallpaper/WallpaperManagerService.java b/services/core/java/com/android/server/wallpaper/WallpaperManagerService.java new file mode 100644 index 0000000..97ea52c --- /dev/null +++ b/services/core/java/com/android/server/wallpaper/WallpaperManagerService.java @@ -0,0 +1,1353 @@ +/* + * 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.wallpaper; + +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.graphics.Point; +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; + +public class WallpaperManagerService extends IWallpaperManager.Stub { + static final String TAG = "WallpaperManagerService"; + 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; + + boolean mDimensionsChanged = false; + + 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; + if (mDimensionsChanged) { + try { + mEngine.setDesiredSize(mWallpaper.width, mWallpaper.height); + } catch (RemoteException e) { + Slog.w(TAG, "Failed to set wallpaper dimensions", e); + } + mDimensionsChanged = false; + } + } + } + + @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 systemRunning() { + 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(); + } + } + + /** Called by SystemBackupAgent */ + public String getName() { + // Verify caller is the system + if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) { + throw new RuntimeException("getName() can only be called from the system process"); + } + 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; + } + + private Point getDefaultDisplaySize() { + Point p = new Point(); + WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE); + Display d = wm.getDefaultDisplay(); + d.getRealSize(p); + return p; + } + + 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"); + } + // Make sure it is at least as large as the display. + Point displaySize = getDefaultDisplaySize(); + width = Math.max(width, displaySize.x); + height = Math.max(height, displaySize.y); + + 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); + } else if (wallpaper.connection.mService != null) { + // We've attached to the service but the engine hasn't attached back to us + // yet. This means it will be created with the previous dimensions, so we + // need to update it to the new dimensions once it attaches. + wallpaper.connection.mDimensionsChanged = true; + } + } + } + } + } + + 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 (si == null) { + // The wallpaper component we're trying to use doesn't exist + Slog.w(TAG, "Attempted wallpaper " + componentName + " is unavailable"); + return false; + } + 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.bindServiceAsUser(intent, newConn, + Context.BIND_AUTO_CREATE | Context.BIND_SHOWING_UI, + new UserHandle(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. + int baseSize = getMaximumSizeDimension(); + if (wallpaper.width < baseSize) { + wallpaper.width = baseSize; + } + if (wallpaper.height < baseSize) { + wallpaper.height = baseSize; + } + } + + private int getMaximumSizeDimension() { + WindowManager wm = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE); + Display d = wm.getDefaultDisplay(); + return d.getMaximumSizeDimension(); + } + + // Called by SystemBackupAgent after files are restored to disk. + public void settingsRestored() { + // Verify caller is the system + if (Binder.getCallingUid() != android.os.Process.SYSTEM_UID) { + throw new RuntimeException("settingsRestored() can only be called from the system process"); + } + // 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()); + } + } + } + } +} |