/services/java/com/android/server/WallpaperManagerService.java
Java | 1345 lines | 1145 code | 106 blank | 94 comment | 260 complexity | 2a2875d2135aec24947a9d7ecfc88417 MD5 | raw file
- /*
- * 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.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;
- 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;
- 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();
- }
- }
- 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;
- }
- 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.
- 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());
- }
- }
- }
- }
- }