diff options
Diffstat (limited to 'services/java/com/android/server/AppWidgetServiceImpl.java')
| -rw-r--r-- | services/java/com/android/server/AppWidgetServiceImpl.java | 2126 |
1 files changed, 0 insertions, 2126 deletions
diff --git a/services/java/com/android/server/AppWidgetServiceImpl.java b/services/java/com/android/server/AppWidgetServiceImpl.java deleted file mode 100644 index 69ae846..0000000 --- a/services/java/com/android/server/AppWidgetServiceImpl.java +++ /dev/null @@ -1,2126 +0,0 @@ -/* - * Copyright (C) 2011 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 android.app.AlarmManager; -import android.app.AppGlobals; -import android.app.PendingIntent; -import android.appwidget.AppWidgetManager; -import android.appwidget.AppWidgetProviderInfo; -import android.content.ComponentName; -import android.content.Context; -import android.content.Intent; -import android.content.Intent.FilterComparison; -import android.content.ServiceConnection; -import android.content.pm.ActivityInfo; -import android.content.pm.ApplicationInfo; -import android.content.pm.IPackageManager; -import android.content.pm.PackageInfo; -import android.content.pm.PackageManager; -import android.content.pm.ResolveInfo; -import android.content.pm.ServiceInfo; -import android.content.res.Resources; -import android.content.res.TypedArray; -import android.content.res.XmlResourceParser; -import android.graphics.Point; -import android.net.Uri; -import android.os.Binder; -import android.os.Bundle; -import android.os.Environment; -import android.os.Handler; -import android.os.HandlerThread; -import android.os.IBinder; -import android.os.Looper; -import android.os.Process; -import android.os.RemoteException; -import android.os.SystemClock; -import android.os.UserHandle; -import android.util.AtomicFile; -import android.util.AttributeSet; -import android.util.Log; -import android.util.Pair; -import android.util.Slog; -import android.util.TypedValue; -import android.util.Xml; -import android.view.Display; -import android.view.WindowManager; -import android.widget.RemoteViews; - -import com.android.internal.appwidget.IAppWidgetHost; -import com.android.internal.util.FastXmlSerializer; -import com.android.internal.widget.IRemoteViewsAdapterConnection; -import com.android.internal.widget.IRemoteViewsFactory; - -import org.xmlpull.v1.XmlPullParser; -import org.xmlpull.v1.XmlPullParserException; -import org.xmlpull.v1.XmlSerializer; - -import java.io.File; -import java.io.FileDescriptor; -import java.io.FileInputStream; -import java.io.FileNotFoundException; -import java.io.FileOutputStream; -import java.io.IOException; -import java.io.PrintWriter; -import java.util.ArrayList; -import java.util.HashMap; -import java.util.HashSet; -import java.util.Iterator; -import java.util.List; -import java.util.Locale; -import java.util.Set; - -class AppWidgetServiceImpl { - - private static final String KEYGUARD_HOST_PACKAGE = "com.android.keyguard"; - private static final int KEYGUARD_HOST_ID = 0x4b455947; - private static final String TAG = "AppWidgetServiceImpl"; - private static final String SETTINGS_FILENAME = "appwidgets.xml"; - private static final int MIN_UPDATE_PERIOD = 30 * 60 * 1000; // 30 minutes - private static final int CURRENT_VERSION = 1; // Bump if the stored widgets need to be upgraded. - - private static boolean DBG = false; - - /* - * When identifying a Host or Provider based on the calling process, use the uid field. When - * identifying a Host or Provider based on a package manager broadcast, use the package given. - */ - - static class Provider { - int uid; - AppWidgetProviderInfo info; - ArrayList<AppWidgetId> instances = new ArrayList<AppWidgetId>(); - PendingIntent broadcast; - boolean zombie; // if we're in safe mode, don't prune this just because nobody references it - - int tag; // for use while saving state (the index) - } - - static class Host { - int uid; - int hostId; - String packageName; - ArrayList<AppWidgetId> instances = new ArrayList<AppWidgetId>(); - IAppWidgetHost callbacks; - boolean zombie; // if we're in safe mode, don't prune this just because nobody references it - - int tag; // for use while saving state (the index) - - boolean uidMatches(int callingUid) { - if (UserHandle.getAppId(callingUid) == Process.myUid()) { - // For a host that's in the system process, ignore the user id - return UserHandle.isSameApp(this.uid, callingUid); - } else { - return this.uid == callingUid; - } - } - } - - static class AppWidgetId { - int appWidgetId; - Provider provider; - RemoteViews views; - Bundle options; - Host host; - } - - /** - * Acts as a proxy between the ServiceConnection and the RemoteViewsAdapterConnection. This - * needs to be a static inner class since a reference to the ServiceConnection is held globally - * and may lead us to leak AppWidgetService instances (if there were more than one). - */ - static class ServiceConnectionProxy implements ServiceConnection { - private final IBinder mConnectionCb; - - ServiceConnectionProxy(Pair<Integer, Intent.FilterComparison> key, IBinder connectionCb) { - mConnectionCb = connectionCb; - } - - public void onServiceConnected(ComponentName name, IBinder service) { - final IRemoteViewsAdapterConnection cb = IRemoteViewsAdapterConnection.Stub - .asInterface(mConnectionCb); - try { - cb.onServiceConnected(service); - } catch (Exception e) { - e.printStackTrace(); - } - } - - public void onServiceDisconnected(ComponentName name) { - disconnect(); - } - - public void disconnect() { - final IRemoteViewsAdapterConnection cb = IRemoteViewsAdapterConnection.Stub - .asInterface(mConnectionCb); - try { - cb.onServiceDisconnected(); - } catch (Exception e) { - e.printStackTrace(); - } - } - } - - // Manages active connections to RemoteViewsServices - private final HashMap<Pair<Integer, FilterComparison>, ServiceConnection> mBoundRemoteViewsServices = new HashMap<Pair<Integer, FilterComparison>, ServiceConnection>(); - // Manages persistent references to RemoteViewsServices from different App Widgets - private final HashMap<FilterComparison, HashSet<Integer>> mRemoteViewsServicesAppWidgets = new HashMap<FilterComparison, HashSet<Integer>>(); - - final Context mContext; - final IPackageManager mPm; - final AlarmManager mAlarmManager; - final ArrayList<Provider> mInstalledProviders = new ArrayList<Provider>(); - final int mUserId; - final boolean mHasFeature; - - Locale mLocale; - int mNextAppWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID + 1; - final ArrayList<AppWidgetId> mAppWidgetIds = new ArrayList<AppWidgetId>(); - final ArrayList<Host> mHosts = new ArrayList<Host>(); - // set of package names - final HashSet<String> mPackagesWithBindWidgetPermission = new HashSet<String>(); - boolean mSafeMode; - boolean mStateLoaded; - int mMaxWidgetBitmapMemory; - - private final Handler mSaveStateHandler; - - // These are for debugging only -- widgets are going missing in some rare instances - ArrayList<Provider> mDeletedProviders = new ArrayList<Provider>(); - ArrayList<Host> mDeletedHosts = new ArrayList<Host>(); - - AppWidgetServiceImpl(Context context, int userId, Handler saveStateHandler) { - mContext = context; - mPm = AppGlobals.getPackageManager(); - mAlarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE); - mUserId = userId; - mSaveStateHandler = saveStateHandler; - mHasFeature = context.getPackageManager().hasSystemFeature( - PackageManager.FEATURE_APP_WIDGETS); - computeMaximumWidgetBitmapMemory(); - } - - void computeMaximumWidgetBitmapMemory() { - WindowManager wm = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE); - Display display = wm.getDefaultDisplay(); - Point size = new Point(); - display.getRealSize(size); - // Cap memory usage at 1.5 times the size of the display - // 1.5 * 4 bytes/pixel * w * h ==> 6 * w * h - mMaxWidgetBitmapMemory = 6 * size.x * size.y; - } - - public void systemReady(boolean safeMode) { - mSafeMode = safeMode; - - synchronized (mAppWidgetIds) { - ensureStateLoadedLocked(); - } - } - - private void log(String msg) { - Slog.i(TAG, "u=" + mUserId + ": " + msg); - } - - void onConfigurationChanged() { - if (DBG) log("Got onConfigurationChanged()"); - Locale revised = Locale.getDefault(); - if (revised == null || mLocale == null || !(revised.equals(mLocale))) { - mLocale = revised; - - synchronized (mAppWidgetIds) { - ensureStateLoadedLocked(); - // Note: updateProvidersForPackageLocked() may remove providers, so we must copy the - // list of installed providers and skip providers that we don't need to update. - // Also note that remove the provider does not clear the Provider component data. - ArrayList<Provider> installedProviders = - new ArrayList<Provider>(mInstalledProviders); - HashSet<ComponentName> removedProviders = new HashSet<ComponentName>(); - int N = installedProviders.size(); - for (int i = N - 1; i >= 0; i--) { - Provider p = installedProviders.get(i); - ComponentName cn = p.info.provider; - if (!removedProviders.contains(cn)) { - updateProvidersForPackageLocked(cn.getPackageName(), removedProviders); - } - } - saveStateAsync(); - } - } - } - - void onBroadcastReceived(Intent intent) { - if (DBG) log("onBroadcast " + intent); - final String action = intent.getAction(); - boolean added = false; - boolean changed = false; - boolean providersModified = false; - String pkgList[] = null; - if (Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE.equals(action)) { - pkgList = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST); - added = true; - } else if (Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE.equals(action)) { - pkgList = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST); - added = false; - } else { - Uri uri = intent.getData(); - if (uri == null) { - return; - } - String pkgName = uri.getSchemeSpecificPart(); - if (pkgName == null) { - return; - } - pkgList = new String[] { pkgName }; - added = Intent.ACTION_PACKAGE_ADDED.equals(action); - changed = Intent.ACTION_PACKAGE_CHANGED.equals(action); - } - if (pkgList == null || pkgList.length == 0) { - return; - } - if (added || changed) { - synchronized (mAppWidgetIds) { - ensureStateLoadedLocked(); - Bundle extras = intent.getExtras(); - if (changed - || (extras != null && extras.getBoolean(Intent.EXTRA_REPLACING, false))) { - for (String pkgName : pkgList) { - // The package was just upgraded - providersModified |= updateProvidersForPackageLocked(pkgName, null); - } - } else { - // The package was just added - for (String pkgName : pkgList) { - providersModified |= addProvidersForPackageLocked(pkgName); - } - } - saveStateAsync(); - } - } else { - Bundle extras = intent.getExtras(); - if (extras != null && extras.getBoolean(Intent.EXTRA_REPLACING, false)) { - // The package is being updated. We'll receive a PACKAGE_ADDED shortly. - } else { - synchronized (mAppWidgetIds) { - ensureStateLoadedLocked(); - for (String pkgName : pkgList) { - providersModified |= removeProvidersForPackageLocked(pkgName); - saveStateAsync(); - } - } - } - } - - if (providersModified) { - // If the set of providers has been modified, notify each active AppWidgetHost - synchronized (mAppWidgetIds) { - ensureStateLoadedLocked(); - notifyHostsForProvidersChangedLocked(); - } - } - } - - private void dumpProvider(Provider p, int index, PrintWriter pw) { - AppWidgetProviderInfo info = p.info; - pw.print(" ["); pw.print(index); pw.print("] provider "); - pw.print(info.provider.flattenToShortString()); - pw.println(':'); - pw.print(" min=("); pw.print(info.minWidth); - pw.print("x"); pw.print(info.minHeight); - pw.print(") minResize=("); pw.print(info.minResizeWidth); - pw.print("x"); pw.print(info.minResizeHeight); - pw.print(") updatePeriodMillis="); - pw.print(info.updatePeriodMillis); - pw.print(" resizeMode="); - pw.print(info.resizeMode); - pw.print(info.widgetCategory); - pw.print(" autoAdvanceViewId="); - pw.print(info.autoAdvanceViewId); - pw.print(" initialLayout=#"); - pw.print(Integer.toHexString(info.initialLayout)); - pw.print(" uid="); pw.print(p.uid); - pw.print(" zombie="); pw.println(p.zombie); - } - - private void dumpHost(Host host, int index, PrintWriter pw) { - pw.print(" ["); pw.print(index); pw.print("] hostId="); - pw.print(host.hostId); pw.print(' '); - pw.print(host.packageName); pw.print('/'); - pw.print(host.uid); pw.println(':'); - pw.print(" callbacks="); pw.println(host.callbacks); - pw.print(" instances.size="); pw.print(host.instances.size()); - pw.print(" zombie="); pw.println(host.zombie); - } - - private void dumpAppWidgetId(AppWidgetId id, int index, PrintWriter pw) { - pw.print(" ["); pw.print(index); pw.print("] id="); - pw.println(id.appWidgetId); - pw.print(" hostId="); - pw.print(id.host.hostId); pw.print(' '); - pw.print(id.host.packageName); pw.print('/'); - pw.println(id.host.uid); - if (id.provider != null) { - pw.print(" provider="); - pw.println(id.provider.info.provider.flattenToShortString()); - } - if (id.host != null) { - pw.print(" host.callbacks="); pw.println(id.host.callbacks); - } - if (id.views != null) { - pw.print(" views="); pw.println(id.views); - } - } - - 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 from from pid=" - + Binder.getCallingPid() - + ", uid=" + Binder.getCallingUid()); - return; - } - - synchronized (mAppWidgetIds) { - int N = mInstalledProviders.size(); - pw.println("Providers:"); - for (int i=0; i<N; i++) { - dumpProvider(mInstalledProviders.get(i), i, pw); - } - - N = mAppWidgetIds.size(); - pw.println(" "); - pw.println("AppWidgetIds:"); - for (int i=0; i<N; i++) { - dumpAppWidgetId(mAppWidgetIds.get(i), i, pw); - } - - N = mHosts.size(); - pw.println(" "); - pw.println("Hosts:"); - for (int i=0; i<N; i++) { - dumpHost(mHosts.get(i), i, pw); - } - - N = mDeletedProviders.size(); - pw.println(" "); - pw.println("Deleted Providers:"); - for (int i=0; i<N; i++) { - dumpProvider(mDeletedProviders.get(i), i, pw); - } - - N = mDeletedHosts.size(); - pw.println(" "); - pw.println("Deleted Hosts:"); - for (int i=0; i<N; i++) { - dumpHost(mDeletedHosts.get(i), i, pw); - } - } - } - - private void ensureStateLoadedLocked() { - if (!mStateLoaded) { - if (!mHasFeature) { - return; - } - loadAppWidgetListLocked(); - loadStateLocked(); - mStateLoaded = true; - } - } - - public int allocateAppWidgetId(String packageName, int hostId) { - int callingUid = enforceSystemOrCallingUid(packageName); - synchronized (mAppWidgetIds) { - if (!mHasFeature) { - return -1; - } - ensureStateLoadedLocked(); - int appWidgetId = mNextAppWidgetId++; - - Host host = lookupOrAddHostLocked(callingUid, packageName, hostId); - - AppWidgetId id = new AppWidgetId(); - id.appWidgetId = appWidgetId; - id.host = host; - - host.instances.add(id); - mAppWidgetIds.add(id); - - saveStateAsync(); - if (DBG) log("Allocating AppWidgetId for " + packageName + " host=" + hostId - + " id=" + appWidgetId); - return appWidgetId; - } - } - - public void deleteAppWidgetId(int appWidgetId) { - synchronized (mAppWidgetIds) { - if (!mHasFeature) { - return; - } - ensureStateLoadedLocked(); - AppWidgetId id = lookupAppWidgetIdLocked(appWidgetId); - if (id != null) { - deleteAppWidgetLocked(id); - saveStateAsync(); - } - } - } - - public void deleteHost(int hostId) { - synchronized (mAppWidgetIds) { - if (!mHasFeature) { - return; - } - ensureStateLoadedLocked(); - int callingUid = Binder.getCallingUid(); - Host host = lookupHostLocked(callingUid, hostId); - if (host != null) { - deleteHostLocked(host); - saveStateAsync(); - } - } - } - - public void deleteAllHosts() { - synchronized (mAppWidgetIds) { - if (!mHasFeature) { - return; - } - ensureStateLoadedLocked(); - int callingUid = Binder.getCallingUid(); - final int N = mHosts.size(); - boolean changed = false; - for (int i = N - 1; i >= 0; i--) { - Host host = mHosts.get(i); - if (host.uidMatches(callingUid)) { - deleteHostLocked(host); - changed = true; - } - } - if (changed) { - saveStateAsync(); - } - } - } - - void deleteHostLocked(Host host) { - final int N = host.instances.size(); - for (int i = N - 1; i >= 0; i--) { - AppWidgetId id = host.instances.get(i); - deleteAppWidgetLocked(id); - } - host.instances.clear(); - mHosts.remove(host); - mDeletedHosts.add(host); - // it's gone or going away, abruptly drop the callback connection - host.callbacks = null; - } - - void deleteAppWidgetLocked(AppWidgetId id) { - // We first unbind all services that are bound to this id - unbindAppWidgetRemoteViewsServicesLocked(id); - - Host host = id.host; - host.instances.remove(id); - pruneHostLocked(host); - - mAppWidgetIds.remove(id); - - Provider p = id.provider; - if (p != null) { - p.instances.remove(id); - if (!p.zombie) { - // send the broacast saying that this appWidgetId has been deleted - Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_DELETED); - intent.setComponent(p.info.provider); - intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, id.appWidgetId); - mContext.sendBroadcastAsUser(intent, new UserHandle(mUserId)); - if (p.instances.size() == 0) { - // cancel the future updates - cancelBroadcasts(p); - - // send the broacast saying that the provider is not in use any more - intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_DISABLED); - intent.setComponent(p.info.provider); - mContext.sendBroadcastAsUser(intent, new UserHandle(mUserId)); - } - } - } - } - - void cancelBroadcasts(Provider p) { - if (DBG) log("cancelBroadcasts for " + p); - if (p.broadcast != null) { - mAlarmManager.cancel(p.broadcast); - long token = Binder.clearCallingIdentity(); - try { - p.broadcast.cancel(); - } finally { - Binder.restoreCallingIdentity(token); - } - p.broadcast = null; - } - } - - private void bindAppWidgetIdImpl(int appWidgetId, ComponentName provider, Bundle options) { - if (DBG) log("bindAppWidgetIdImpl appwid=" + appWidgetId - + " provider=" + provider); - final long ident = Binder.clearCallingIdentity(); - try { - synchronized (mAppWidgetIds) { - if (!mHasFeature) { - return; - } - options = cloneIfLocalBinder(options); - ensureStateLoadedLocked(); - AppWidgetId id = lookupAppWidgetIdLocked(appWidgetId); - if (id == null) { - throw new IllegalArgumentException("bad appWidgetId"); - } - if (id.provider != null) { - throw new IllegalArgumentException("appWidgetId " + appWidgetId - + " already bound to " + id.provider.info.provider); - } - Provider p = lookupProviderLocked(provider); - if (p == null) { - throw new IllegalArgumentException("not a appwidget provider: " + provider); - } - if (p.zombie) { - throw new IllegalArgumentException("can't bind to a 3rd party provider in" - + " safe mode: " + provider); - } - - id.provider = p; - if (options == null) { - options = new Bundle(); - } - id.options = options; - - // We need to provide a default value for the widget category if it is not specified - if (!options.containsKey(AppWidgetManager.OPTION_APPWIDGET_HOST_CATEGORY)) { - options.putInt(AppWidgetManager.OPTION_APPWIDGET_HOST_CATEGORY, - AppWidgetProviderInfo.WIDGET_CATEGORY_HOME_SCREEN); - } - - p.instances.add(id); - int instancesSize = p.instances.size(); - if (instancesSize == 1) { - // tell the provider that it's ready - sendEnableIntentLocked(p); - } - - // send an update now -- We need this update now, and just for this appWidgetId. - // It's less critical when the next one happens, so when we schedule the next one, - // we add updatePeriodMillis to its start time. That time will have some slop, - // but that's okay. - sendUpdateIntentLocked(p, new int[] { appWidgetId }); - - // schedule the future updates - registerForBroadcastsLocked(p, getAppWidgetIds(p)); - saveStateAsync(); - } - } finally { - Binder.restoreCallingIdentity(ident); - } - } - - public void bindAppWidgetId(int appWidgetId, ComponentName provider, Bundle options) { - mContext.enforceCallingOrSelfPermission(android.Manifest.permission.BIND_APPWIDGET, - "bindAppWidgetId appWidgetId=" + appWidgetId + " provider=" + provider); - bindAppWidgetIdImpl(appWidgetId, provider, options); - } - - public boolean bindAppWidgetIdIfAllowed( - String packageName, int appWidgetId, ComponentName provider, Bundle options) { - if (!mHasFeature) { - return false; - } - try { - mContext.enforceCallingOrSelfPermission(android.Manifest.permission.BIND_APPWIDGET, null); - } catch (SecurityException se) { - if (!callerHasBindAppWidgetPermission(packageName)) { - return false; - } - } - bindAppWidgetIdImpl(appWidgetId, provider, options); - return true; - } - - private boolean callerHasBindAppWidgetPermission(String packageName) { - int callingUid = Binder.getCallingUid(); - try { - if (!UserHandle.isSameApp(callingUid, getUidForPackage(packageName))) { - return false; - } - } catch (Exception e) { - return false; - } - synchronized (mAppWidgetIds) { - ensureStateLoadedLocked(); - return mPackagesWithBindWidgetPermission.contains(packageName); - } - } - - public boolean hasBindAppWidgetPermission(String packageName) { - if (!mHasFeature) { - return false; - } - mContext.enforceCallingPermission( - android.Manifest.permission.MODIFY_APPWIDGET_BIND_PERMISSIONS, - "hasBindAppWidgetPermission packageName=" + packageName); - - synchronized (mAppWidgetIds) { - ensureStateLoadedLocked(); - return mPackagesWithBindWidgetPermission.contains(packageName); - } - } - - public void setBindAppWidgetPermission(String packageName, boolean permission) { - if (!mHasFeature) { - return; - } - mContext.enforceCallingPermission( - android.Manifest.permission.MODIFY_APPWIDGET_BIND_PERMISSIONS, - "setBindAppWidgetPermission packageName=" + packageName); - - synchronized (mAppWidgetIds) { - ensureStateLoadedLocked(); - if (permission) { - mPackagesWithBindWidgetPermission.add(packageName); - } else { - mPackagesWithBindWidgetPermission.remove(packageName); - } - saveStateAsync(); - } - } - - // Binds to a specific RemoteViewsService - public void bindRemoteViewsService(int appWidgetId, Intent intent, IBinder connection) { - synchronized (mAppWidgetIds) { - if (!mHasFeature) { - return; - } - ensureStateLoadedLocked(); - AppWidgetId id = lookupAppWidgetIdLocked(appWidgetId); - if (id == null) { - throw new IllegalArgumentException("bad appWidgetId"); - } - final ComponentName componentName = intent.getComponent(); - try { - final ServiceInfo si = AppGlobals.getPackageManager().getServiceInfo(componentName, - PackageManager.GET_PERMISSIONS, mUserId); - if (!android.Manifest.permission.BIND_REMOTEVIEWS.equals(si.permission)) { - throw new SecurityException("Selected service does not require " - + android.Manifest.permission.BIND_REMOTEVIEWS + ": " + componentName); - } - } catch (RemoteException e) { - throw new IllegalArgumentException("Unknown component " + componentName); - } - - // If there is already a connection made for this service intent, then disconnect from - // that first. (This does not allow multiple connections to the same service under - // the same key) - ServiceConnectionProxy conn = null; - FilterComparison fc = new FilterComparison(intent); - Pair<Integer, FilterComparison> key = Pair.create(appWidgetId, fc); - if (mBoundRemoteViewsServices.containsKey(key)) { - conn = (ServiceConnectionProxy) mBoundRemoteViewsServices.get(key); - conn.disconnect(); - mContext.unbindService(conn); - mBoundRemoteViewsServices.remove(key); - } - - int userId = UserHandle.getUserId(id.provider.uid); - if (userId != mUserId) { - Slog.w(TAG, "AppWidgetServiceImpl of user " + mUserId - + " binding to provider on user " + userId); - } - // Bind to the RemoteViewsService (which will trigger a callback to the - // RemoteViewsAdapter.onServiceConnected()) - final long token = Binder.clearCallingIdentity(); - try { - conn = new ServiceConnectionProxy(key, connection); - mContext.bindServiceAsUser(intent, conn, Context.BIND_AUTO_CREATE, - new UserHandle(userId)); - mBoundRemoteViewsServices.put(key, conn); - } finally { - Binder.restoreCallingIdentity(token); - } - - // Add it to the mapping of RemoteViewsService to appWidgetIds so that we can determine - // when we can call back to the RemoteViewsService later to destroy associated - // factories. - incrementAppWidgetServiceRefCount(appWidgetId, fc); - } - } - - // Unbinds from a specific RemoteViewsService - public void unbindRemoteViewsService(int appWidgetId, Intent intent) { - synchronized (mAppWidgetIds) { - if (!mHasFeature) { - return; - } - ensureStateLoadedLocked(); - // Unbind from the RemoteViewsService (which will trigger a callback to the bound - // RemoteViewsAdapter) - Pair<Integer, FilterComparison> key = Pair.create(appWidgetId, new FilterComparison( - intent)); - if (mBoundRemoteViewsServices.containsKey(key)) { - // We don't need to use the appWidgetId until after we are sure there is something - // to unbind. Note that this may mask certain issues with apps calling unbind() - // more than necessary. - AppWidgetId id = lookupAppWidgetIdLocked(appWidgetId); - if (id == null) { - throw new IllegalArgumentException("bad appWidgetId"); - } - - ServiceConnectionProxy conn = (ServiceConnectionProxy) mBoundRemoteViewsServices - .get(key); - conn.disconnect(); - mContext.unbindService(conn); - mBoundRemoteViewsServices.remove(key); - } - } - } - - // Unbinds from a RemoteViewsService when we delete an app widget - private void unbindAppWidgetRemoteViewsServicesLocked(AppWidgetId id) { - int appWidgetId = id.appWidgetId; - // Unbind all connections to Services bound to this AppWidgetId - Iterator<Pair<Integer, Intent.FilterComparison>> it = mBoundRemoteViewsServices.keySet() - .iterator(); - while (it.hasNext()) { - final Pair<Integer, Intent.FilterComparison> key = it.next(); - if (key.first.intValue() == appWidgetId) { - final ServiceConnectionProxy conn = (ServiceConnectionProxy) mBoundRemoteViewsServices - .get(key); - conn.disconnect(); - mContext.unbindService(conn); - it.remove(); - } - } - - // Check if we need to destroy any services (if no other app widgets are - // referencing the same service) - decrementAppWidgetServiceRefCount(id); - } - - // Destroys the cached factory on the RemoteViewsService's side related to the specified intent - private void destroyRemoteViewsService(final Intent intent, AppWidgetId id) { - final ServiceConnection conn = new ServiceConnection() { - @Override - public void onServiceConnected(ComponentName name, IBinder service) { - final IRemoteViewsFactory cb = IRemoteViewsFactory.Stub.asInterface(service); - try { - cb.onDestroy(intent); - } catch (RemoteException e) { - e.printStackTrace(); - } catch (RuntimeException e) { - e.printStackTrace(); - } - mContext.unbindService(this); - } - - @Override - public void onServiceDisconnected(android.content.ComponentName name) { - // Do nothing - } - }; - - int userId = UserHandle.getUserId(id.provider.uid); - // Bind to the service and remove the static intent->factory mapping in the - // RemoteViewsService. - final long token = Binder.clearCallingIdentity(); - try { - mContext.bindServiceAsUser(intent, conn, Context.BIND_AUTO_CREATE, - new UserHandle(userId)); - } finally { - Binder.restoreCallingIdentity(token); - } - } - - // Adds to the ref-count for a given RemoteViewsService intent - private void incrementAppWidgetServiceRefCount(int appWidgetId, FilterComparison fc) { - HashSet<Integer> appWidgetIds = null; - if (mRemoteViewsServicesAppWidgets.containsKey(fc)) { - appWidgetIds = mRemoteViewsServicesAppWidgets.get(fc); - } else { - appWidgetIds = new HashSet<Integer>(); - mRemoteViewsServicesAppWidgets.put(fc, appWidgetIds); - } - appWidgetIds.add(appWidgetId); - } - - // Subtracts from the ref-count for a given RemoteViewsService intent, prompting a delete if - // the ref-count reaches zero. - private void decrementAppWidgetServiceRefCount(AppWidgetId id) { - Iterator<FilterComparison> it = mRemoteViewsServicesAppWidgets.keySet().iterator(); - while (it.hasNext()) { - final FilterComparison key = it.next(); - final HashSet<Integer> ids = mRemoteViewsServicesAppWidgets.get(key); - if (ids.remove(id.appWidgetId)) { - // If we have removed the last app widget referencing this service, then we - // should destroy it and remove it from this set - if (ids.isEmpty()) { - destroyRemoteViewsService(key.getIntent(), id); - it.remove(); - } - } - } - } - - public AppWidgetProviderInfo getAppWidgetInfo(int appWidgetId) { - synchronized (mAppWidgetIds) { - if (!mHasFeature) { - return null; - } - ensureStateLoadedLocked(); - AppWidgetId id = lookupAppWidgetIdLocked(appWidgetId); - if (id != null && id.provider != null && !id.provider.zombie) { - return cloneIfLocalBinder(id.provider.info); - } - return null; - } - } - - public RemoteViews getAppWidgetViews(int appWidgetId) { - if (DBG) log("getAppWidgetViews id=" + appWidgetId); - synchronized (mAppWidgetIds) { - if (!mHasFeature) { - return null; - } - ensureStateLoadedLocked(); - AppWidgetId id = lookupAppWidgetIdLocked(appWidgetId); - if (id != null) { - return cloneIfLocalBinder(id.views); - } - if (DBG) log(" couldn't find appwidgetid"); - return null; - } - } - - public List<AppWidgetProviderInfo> getInstalledProviders(int categoryFilter) { - synchronized (mAppWidgetIds) { - if (!mHasFeature) { - return new ArrayList<AppWidgetProviderInfo>(0); - } - ensureStateLoadedLocked(); - final int N = mInstalledProviders.size(); - ArrayList<AppWidgetProviderInfo> result = new ArrayList<AppWidgetProviderInfo>(N); - for (int i = 0; i < N; i++) { - Provider p = mInstalledProviders.get(i); - if (!p.zombie && (p.info.widgetCategory & categoryFilter) != 0) { - result.add(cloneIfLocalBinder(p.info)); - } - } - return result; - } - } - - public void updateAppWidgetIds(int[] appWidgetIds, RemoteViews views) { - if (!mHasFeature) { - return; - } - if (appWidgetIds == null) { - return; - } - if (DBG) log("updateAppWidgetIds views: " + views); - int bitmapMemoryUsage = 0; - if (views != null) { - bitmapMemoryUsage = views.estimateMemoryUsage(); - } - if (bitmapMemoryUsage > mMaxWidgetBitmapMemory) { - throw new IllegalArgumentException("RemoteViews for widget update exceeds maximum" + - " bitmap memory usage (used: " + bitmapMemoryUsage + ", max: " + - mMaxWidgetBitmapMemory + ") The total memory cannot exceed that required to" + - " fill the device's screen once."); - } - - if (appWidgetIds.length == 0) { - return; - } - final int N = appWidgetIds.length; - - synchronized (mAppWidgetIds) { - ensureStateLoadedLocked(); - for (int i = 0; i < N; i++) { - AppWidgetId id = lookupAppWidgetIdLocked(appWidgetIds[i]); - updateAppWidgetInstanceLocked(id, views); - } - } - } - - private void saveStateAsync() { - mSaveStateHandler.post(mSaveStateRunnable); - } - - private final Runnable mSaveStateRunnable = new Runnable() { - @Override - public void run() { - synchronized (mAppWidgetIds) { - ensureStateLoadedLocked(); - saveStateLocked(); - } - } - }; - - public void updateAppWidgetOptions(int appWidgetId, Bundle options) { - synchronized (mAppWidgetIds) { - if (!mHasFeature) { - return; - } - options = cloneIfLocalBinder(options); - ensureStateLoadedLocked(); - AppWidgetId id = lookupAppWidgetIdLocked(appWidgetId); - - if (id == null) { - return; - } - - Provider p = id.provider; - // Merge the options - id.options.putAll(options); - - // send the broacast saying that this appWidgetId has been deleted - Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_OPTIONS_CHANGED); - intent.setComponent(p.info.provider); - intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, id.appWidgetId); - intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_OPTIONS, id.options); - mContext.sendBroadcastAsUser(intent, new UserHandle(mUserId)); - saveStateAsync(); - } - } - - public Bundle getAppWidgetOptions(int appWidgetId) { - synchronized (mAppWidgetIds) { - if (!mHasFeature) { - return Bundle.EMPTY; - } - ensureStateLoadedLocked(); - AppWidgetId id = lookupAppWidgetIdLocked(appWidgetId); - if (id != null && id.options != null) { - return cloneIfLocalBinder(id.options); - } else { - return Bundle.EMPTY; - } - } - } - - public void partiallyUpdateAppWidgetIds(int[] appWidgetIds, RemoteViews views) { - if (!mHasFeature) { - return; - } - if (appWidgetIds == null) { - return; - } - if (appWidgetIds.length == 0) { - return; - } - final int N = appWidgetIds.length; - - synchronized (mAppWidgetIds) { - ensureStateLoadedLocked(); - for (int i = 0; i < N; i++) { - AppWidgetId id = lookupAppWidgetIdLocked(appWidgetIds[i]); - if (id == null) { - Slog.w(TAG, "widget id " + appWidgetIds[i] + " not found!"); - } else if (id.views != null) { - // Only trigger a partial update for a widget if it has received a full update - updateAppWidgetInstanceLocked(id, views, true); - } - } - } - } - - public void notifyAppWidgetViewDataChanged(int[] appWidgetIds, int viewId) { - if (!mHasFeature) { - return; - } - if (appWidgetIds == null) { - return; - } - if (appWidgetIds.length == 0) { - return; - } - final int N = appWidgetIds.length; - - synchronized (mAppWidgetIds) { - ensureStateLoadedLocked(); - for (int i = 0; i < N; i++) { - AppWidgetId id = lookupAppWidgetIdLocked(appWidgetIds[i]); - notifyAppWidgetViewDataChangedInstanceLocked(id, viewId); - } - } - } - - public void updateAppWidgetProvider(ComponentName provider, RemoteViews views) { - if (!mHasFeature) { - return; - } - synchronized (mAppWidgetIds) { - ensureStateLoadedLocked(); - Provider p = lookupProviderLocked(provider); - if (p == null) { - Slog.w(TAG, "updateAppWidgetProvider: provider doesn't exist: " + provider); - return; - } - ArrayList<AppWidgetId> instances = p.instances; - final int callingUid = Binder.getCallingUid(); - final int N = instances.size(); - for (int i = 0; i < N; i++) { - AppWidgetId id = instances.get(i); - if (canAccessAppWidgetId(id, callingUid)) { - updateAppWidgetInstanceLocked(id, views); - } - } - } - } - - void updateAppWidgetInstanceLocked(AppWidgetId id, RemoteViews views) { - updateAppWidgetInstanceLocked(id, views, false); - } - - void updateAppWidgetInstanceLocked(AppWidgetId id, RemoteViews views, boolean isPartialUpdate) { - // allow for stale appWidgetIds and other badness - // lookup also checks that the calling process can access the appWidgetId - // drop unbound appWidgetIds (shouldn't be possible under normal circumstances) - if (id != null && id.provider != null && !id.provider.zombie && !id.host.zombie) { - - if (!isPartialUpdate) { - // For a full update we replace the RemoteViews completely. - id.views = views; - } else { - // For a partial update, we merge the new RemoteViews with the old. - id.views.mergeRemoteViews(views); - } - - // is anyone listening? - if (id.host.callbacks != null) { - try { - // the lock is held, but this is a oneway call - id.host.callbacks.updateAppWidget(id.appWidgetId, views, mUserId); - } catch (RemoteException e) { - // It failed; remove the callback. No need to prune because - // we know that this host is still referenced by this instance. - id.host.callbacks = null; - } - } - } - } - - void notifyAppWidgetViewDataChangedInstanceLocked(AppWidgetId id, int viewId) { - // allow for stale appWidgetIds and other badness - // lookup also checks that the calling process can access the appWidgetId - // drop unbound appWidgetIds (shouldn't be possible under normal circumstances) - if (id != null && id.provider != null && !id.provider.zombie && !id.host.zombie) { - // is anyone listening? - if (id.host.callbacks != null) { - try { - // the lock is held, but this is a oneway call - id.host.callbacks.viewDataChanged(id.appWidgetId, viewId, mUserId); - } catch (RemoteException e) { - // It failed; remove the callback. No need to prune because - // we know that this host is still referenced by this instance. - id.host.callbacks = null; - } - } - - // If the host is unavailable, then we call the associated - // RemoteViewsFactory.onDataSetChanged() directly - if (id.host.callbacks == null) { - Set<FilterComparison> keys = mRemoteViewsServicesAppWidgets.keySet(); - for (FilterComparison key : keys) { - if (mRemoteViewsServicesAppWidgets.get(key).contains(id.appWidgetId)) { - Intent intent = key.getIntent(); - - final ServiceConnection conn = new ServiceConnection() { - @Override - public void onServiceConnected(ComponentName name, IBinder service) { - IRemoteViewsFactory cb = IRemoteViewsFactory.Stub - .asInterface(service); - try { - cb.onDataSetChangedAsync(); - } catch (RemoteException e) { - e.printStackTrace(); - } catch (RuntimeException e) { - e.printStackTrace(); - } - mContext.unbindService(this); - } - - @Override - public void onServiceDisconnected(android.content.ComponentName name) { - // Do nothing - } - }; - - int userId = UserHandle.getUserId(id.provider.uid); - // Bind to the service and call onDataSetChanged() - final long token = Binder.clearCallingIdentity(); - try { - mContext.bindServiceAsUser(intent, conn, Context.BIND_AUTO_CREATE, - new UserHandle(userId)); - } finally { - Binder.restoreCallingIdentity(token); - } - } - } - } - } - } - - private boolean isLocalBinder() { - return Process.myPid() == Binder.getCallingPid(); - } - - private RemoteViews cloneIfLocalBinder(RemoteViews rv) { - if (isLocalBinder() && rv != null) { - return rv.clone(); - } - return rv; - } - - private AppWidgetProviderInfo cloneIfLocalBinder(AppWidgetProviderInfo info) { - if (isLocalBinder() && info != null) { - return info.clone(); - } - return info; - } - - private Bundle cloneIfLocalBinder(Bundle bundle) { - // Note: this is only a shallow copy. For now this will be fine, but it could be problematic - // if we start adding objects to the options. Further, it would only be an issue if keyguard - // used such options. - if (isLocalBinder() && bundle != null) { - return (Bundle) bundle.clone(); - } - return bundle; - } - - public int[] startListening(IAppWidgetHost callbacks, String packageName, int hostId, - List<RemoteViews> updatedViews) { - if (!mHasFeature) { - return new int[0]; - } - int callingUid = enforceCallingUid(packageName); - synchronized (mAppWidgetIds) { - ensureStateLoadedLocked(); - Host host = lookupOrAddHostLocked(callingUid, packageName, hostId); - host.callbacks = callbacks; - - updatedViews.clear(); - - ArrayList<AppWidgetId> instances = host.instances; - int N = instances.size(); - int[] updatedIds = new int[N]; - for (int i = 0; i < N; i++) { - AppWidgetId id = instances.get(i); - updatedIds[i] = id.appWidgetId; - updatedViews.add(cloneIfLocalBinder(id.views)); - } - return updatedIds; - } - } - - public void stopListening(int hostId) { - synchronized (mAppWidgetIds) { - if (!mHasFeature) { - return; - } - ensureStateLoadedLocked(); - Host host = lookupHostLocked(Binder.getCallingUid(), hostId); - if (host != null) { - host.callbacks = null; - pruneHostLocked(host); - } - } - } - - boolean canAccessAppWidgetId(AppWidgetId id, int callingUid) { - if (id.host.uidMatches(callingUid)) { - // Apps hosting the AppWidget have access to it. - return true; - } - if (id.provider != null && id.provider.uid == callingUid) { - // Apps providing the AppWidget have access to it (if the appWidgetId has been bound) - return true; - } - if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.BIND_APPWIDGET) == PackageManager.PERMISSION_GRANTED) { - // Apps that can bind have access to all appWidgetIds. - return true; - } - // Nobody else can access it. - return false; - } - - AppWidgetId lookupAppWidgetIdLocked(int appWidgetId) { - int callingUid = Binder.getCallingUid(); - final int N = mAppWidgetIds.size(); - for (int i = 0; i < N; i++) { - AppWidgetId id = mAppWidgetIds.get(i); - if (id.appWidgetId == appWidgetId && canAccessAppWidgetId(id, callingUid)) { - return id; - } - } - return null; - } - - Provider lookupProviderLocked(ComponentName provider) { - final int N = mInstalledProviders.size(); - for (int i = 0; i < N; i++) { - Provider p = mInstalledProviders.get(i); - if (p.info.provider.equals(provider)) { - return p; - } - } - return null; - } - - Host lookupHostLocked(int uid, int hostId) { - final int N = mHosts.size(); - for (int i = 0; i < N; i++) { - Host h = mHosts.get(i); - if (h.uidMatches(uid) && h.hostId == hostId) { - return h; - } - } - return null; - } - - Host lookupOrAddHostLocked(int uid, String packageName, int hostId) { - final int N = mHosts.size(); - for (int i = 0; i < N; i++) { - Host h = mHosts.get(i); - if (h.hostId == hostId && h.packageName.equals(packageName)) { - return h; - } - } - Host host = new Host(); - host.packageName = packageName; - host.uid = uid; - host.hostId = hostId; - mHosts.add(host); - return host; - } - - void pruneHostLocked(Host host) { - if (host.instances.size() == 0 && host.callbacks == null) { - mHosts.remove(host); - } - } - - void loadAppWidgetListLocked() { - Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE); - try { - List<ResolveInfo> broadcastReceivers = mPm.queryIntentReceivers(intent, - intent.resolveTypeIfNeeded(mContext.getContentResolver()), - PackageManager.GET_META_DATA, mUserId); - - final int N = broadcastReceivers == null ? 0 : broadcastReceivers.size(); - for (int i = 0; i < N; i++) { - ResolveInfo ri = broadcastReceivers.get(i); - addProviderLocked(ri); - } - } catch (RemoteException re) { - // Shouldn't happen, local call - } - } - - boolean addProviderLocked(ResolveInfo ri) { - if ((ri.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_EXTERNAL_STORAGE) != 0) { - return false; - } - if (!ri.activityInfo.isEnabled()) { - return false; - } - Provider p = parseProviderInfoXml(new ComponentName(ri.activityInfo.packageName, - ri.activityInfo.name), ri); - if (p != null) { - mInstalledProviders.add(p); - return true; - } else { - return false; - } - } - - void removeProviderLocked(int index, Provider p) { - int N = p.instances.size(); - for (int i = 0; i < N; i++) { - AppWidgetId id = p.instances.get(i); - // Call back with empty RemoteViews - updateAppWidgetInstanceLocked(id, null); - // Stop telling the host about updates for this from now on - cancelBroadcasts(p); - // clear out references to this appWidgetId - id.host.instances.remove(id); - mAppWidgetIds.remove(id); - id.provider = null; - pruneHostLocked(id.host); - id.host = null; - } - p.instances.clear(); - mInstalledProviders.remove(index); - mDeletedProviders.add(p); - // no need to send the DISABLE broadcast, since the receiver is gone anyway - cancelBroadcasts(p); - } - - void sendEnableIntentLocked(Provider p) { - Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_ENABLED); - intent.setComponent(p.info.provider); - mContext.sendBroadcastAsUser(intent, new UserHandle(mUserId)); - } - - void sendUpdateIntentLocked(Provider p, int[] appWidgetIds) { - if (appWidgetIds != null && appWidgetIds.length > 0) { - Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE); - intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds); - intent.setComponent(p.info.provider); - mContext.sendBroadcastAsUser(intent, new UserHandle(mUserId)); - } - } - - void registerForBroadcastsLocked(Provider p, int[] appWidgetIds) { - if (p.info.updatePeriodMillis > 0) { - // if this is the first instance, set the alarm. otherwise, - // rely on the fact that we've already set it and that - // PendingIntent.getBroadcast will update the extras. - boolean alreadyRegistered = p.broadcast != null; - Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE); - intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds); - intent.setComponent(p.info.provider); - long token = Binder.clearCallingIdentity(); - try { - p.broadcast = PendingIntent.getBroadcastAsUser(mContext, 1, intent, - PendingIntent.FLAG_UPDATE_CURRENT, new UserHandle(mUserId)); - } finally { - Binder.restoreCallingIdentity(token); - } - if (!alreadyRegistered) { - long period = p.info.updatePeriodMillis; - if (period < MIN_UPDATE_PERIOD) { - period = MIN_UPDATE_PERIOD; - } - mAlarmManager.setInexactRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock - .elapsedRealtime() - + period, period, p.broadcast); - } - } - } - - static int[] getAppWidgetIds(Provider p) { - int instancesSize = p.instances.size(); - int appWidgetIds[] = new int[instancesSize]; - for (int i = 0; i < instancesSize; i++) { - appWidgetIds[i] = p.instances.get(i).appWidgetId; - } - return appWidgetIds; - } - - public int[] getAppWidgetIds(ComponentName provider) { - synchronized (mAppWidgetIds) { - ensureStateLoadedLocked(); - Provider p = lookupProviderLocked(provider); - if (p != null && Binder.getCallingUid() == p.uid) { - return getAppWidgetIds(p); - } else { - return new int[0]; - } - } - } - - static int[] getAppWidgetIds(Host h) { - int instancesSize = h.instances.size(); - int appWidgetIds[] = new int[instancesSize]; - for (int i = 0; i < instancesSize; i++) { - appWidgetIds[i] = h.instances.get(i).appWidgetId; - } - return appWidgetIds; - } - - public int[] getAppWidgetIdsForHost(int hostId) { - synchronized (mAppWidgetIds) { - ensureStateLoadedLocked(); - int callingUid = Binder.getCallingUid(); - Host host = lookupHostLocked(callingUid, hostId); - if (host != null) { - return getAppWidgetIds(host); - } else { - return new int[0]; - } - } - } - - private Provider parseProviderInfoXml(ComponentName component, ResolveInfo ri) { - Provider p = null; - - ActivityInfo activityInfo = ri.activityInfo; - XmlResourceParser parser = null; - try { - parser = activityInfo.loadXmlMetaData(mContext.getPackageManager(), - AppWidgetManager.META_DATA_APPWIDGET_PROVIDER); - if (parser == null) { - Slog.w(TAG, "No " + AppWidgetManager.META_DATA_APPWIDGET_PROVIDER - + " meta-data for " + "AppWidget provider '" + component + '\''); - return null; - } - - AttributeSet attrs = Xml.asAttributeSet(parser); - - int type; - while ((type = parser.next()) != XmlPullParser.END_DOCUMENT - && type != XmlPullParser.START_TAG) { - // drain whitespace, comments, etc. - } - - String nodeName = parser.getName(); - if (!"appwidget-provider".equals(nodeName)) { - Slog.w(TAG, "Meta-data does not start with appwidget-provider tag for" - + " AppWidget provider '" + component + '\''); - return null; - } - - p = new Provider(); - AppWidgetProviderInfo info = p.info = new AppWidgetProviderInfo(); - info.provider = component; - p.uid = activityInfo.applicationInfo.uid; - - Resources res = mContext.getPackageManager() - .getResourcesForApplicationAsUser(activityInfo.packageName, mUserId); - - TypedArray sa = res.obtainAttributes(attrs, - com.android.internal.R.styleable.AppWidgetProviderInfo); - - // These dimensions has to be resolved in the application's context. - // We simply send back the raw complex data, which will be - // converted to dp in {@link AppWidgetManager#getAppWidgetInfo}. - TypedValue value = sa - .peekValue(com.android.internal.R.styleable.AppWidgetProviderInfo_minWidth); - info.minWidth = value != null ? value.data : 0; - value = sa.peekValue(com.android.internal.R.styleable.AppWidgetProviderInfo_minHeight); - info.minHeight = value != null ? value.data : 0; - value = sa.peekValue( - com.android.internal.R.styleable.AppWidgetProviderInfo_minResizeWidth); - info.minResizeWidth = value != null ? value.data : info.minWidth; - value = sa.peekValue( - com.android.internal.R.styleable.AppWidgetProviderInfo_minResizeHeight); - info.minResizeHeight = value != null ? value.data : info.minHeight; - info.updatePeriodMillis = sa.getInt( - com.android.internal.R.styleable.AppWidgetProviderInfo_updatePeriodMillis, 0); - info.initialLayout = sa.getResourceId( - com.android.internal.R.styleable.AppWidgetProviderInfo_initialLayout, 0); - info.initialKeyguardLayout = sa.getResourceId(com.android.internal.R.styleable. - AppWidgetProviderInfo_initialKeyguardLayout, 0); - String className = sa - .getString(com.android.internal.R.styleable.AppWidgetProviderInfo_configure); - if (className != null) { - info.configure = new ComponentName(component.getPackageName(), className); - } - info.label = activityInfo.loadLabel(mContext.getPackageManager()).toString(); - info.icon = ri.getIconResource(); - info.previewImage = sa.getResourceId( - com.android.internal.R.styleable.AppWidgetProviderInfo_previewImage, 0); - info.autoAdvanceViewId = sa.getResourceId( - com.android.internal.R.styleable.AppWidgetProviderInfo_autoAdvanceViewId, -1); - info.resizeMode = sa.getInt( - com.android.internal.R.styleable.AppWidgetProviderInfo_resizeMode, - AppWidgetProviderInfo.RESIZE_NONE); - info.widgetCategory = sa.getInt( - com.android.internal.R.styleable.AppWidgetProviderInfo_widgetCategory, - AppWidgetProviderInfo.WIDGET_CATEGORY_HOME_SCREEN); - - sa.recycle(); - } catch (Exception e) { - // Ok to catch Exception here, because anything going wrong because - // of what a client process passes to us should not be fatal for the - // system process. - Slog.w(TAG, "XML parsing failed for AppWidget provider '" + component + '\'', e); - return null; - } finally { - if (parser != null) - parser.close(); - } - return p; - } - - int getUidForPackage(String packageName) throws PackageManager.NameNotFoundException { - PackageInfo pkgInfo = null; - try { - pkgInfo = mPm.getPackageInfo(packageName, 0, mUserId); - } catch (RemoteException re) { - // Shouldn't happen, local call - } - if (pkgInfo == null || pkgInfo.applicationInfo == null) { - throw new PackageManager.NameNotFoundException(); - } - return pkgInfo.applicationInfo.uid; - } - - int enforceSystemOrCallingUid(String packageName) throws IllegalArgumentException { - int callingUid = Binder.getCallingUid(); - if (UserHandle.getAppId(callingUid) == Process.SYSTEM_UID || callingUid == 0) { - return callingUid; - } - return enforceCallingUid(packageName); - } - - int enforceCallingUid(String packageName) throws IllegalArgumentException { - int callingUid = Binder.getCallingUid(); - int packageUid; - try { - packageUid = getUidForPackage(packageName); - } catch (PackageManager.NameNotFoundException ex) { - throw new IllegalArgumentException("packageName and uid don't match packageName=" - + packageName); - } - if (!UserHandle.isSameApp(callingUid, packageUid)) { - throw new IllegalArgumentException("packageName and uid don't match packageName=" - + packageName); - } - return callingUid; - } - - void sendInitialBroadcasts() { - synchronized (mAppWidgetIds) { - ensureStateLoadedLocked(); - final int N = mInstalledProviders.size(); - for (int i = 0; i < N; i++) { - Provider p = mInstalledProviders.get(i); - if (p.instances.size() > 0) { - sendEnableIntentLocked(p); - int[] appWidgetIds = getAppWidgetIds(p); - sendUpdateIntentLocked(p, appWidgetIds); - registerForBroadcastsLocked(p, appWidgetIds); - } - } - } - } - - // only call from initialization -- it assumes that the data structures are all empty - void loadStateLocked() { - AtomicFile file = savedStateFile(); - try { - FileInputStream stream = file.openRead(); - readStateFromFileLocked(stream); - - if (stream != null) { - try { - stream.close(); - } catch (IOException e) { - Slog.w(TAG, "Failed to close state FileInputStream " + e); - } - } - } catch (FileNotFoundException e) { - Slog.w(TAG, "Failed to read state: " + e); - } - } - - void saveStateLocked() { - if (!mHasFeature) { - return; - } - AtomicFile file = savedStateFile(); - FileOutputStream stream; - try { - stream = file.startWrite(); - if (writeStateToFileLocked(stream)) { - file.finishWrite(stream); - } else { - file.failWrite(stream); - Slog.w(TAG, "Failed to save state, restoring backup."); - } - } catch (IOException e) { - Slog.w(TAG, "Failed open state file for write: " + e); - } - } - - boolean writeStateToFileLocked(FileOutputStream stream) { - int N; - - try { - XmlSerializer out = new FastXmlSerializer(); - out.setOutput(stream, "utf-8"); - out.startDocument(null, true); - out.startTag(null, "gs"); - out.attribute(null, "version", String.valueOf(CURRENT_VERSION)); - int providerIndex = 0; - N = mInstalledProviders.size(); - for (int i = 0; i < N; i++) { - Provider p = mInstalledProviders.get(i); - if (p.instances.size() > 0) { - out.startTag(null, "p"); - out.attribute(null, "pkg", p.info.provider.getPackageName()); - out.attribute(null, "cl", p.info.provider.getClassName()); - out.endTag(null, "p"); - p.tag = providerIndex; - providerIndex++; - } - } - - N = mHosts.size(); - for (int i = 0; i < N; i++) { - Host host = mHosts.get(i); - out.startTag(null, "h"); - out.attribute(null, "pkg", host.packageName); - out.attribute(null, "id", Integer.toHexString(host.hostId)); - out.endTag(null, "h"); - host.tag = i; - } - - N = mAppWidgetIds.size(); - for (int i = 0; i < N; i++) { - AppWidgetId id = mAppWidgetIds.get(i); - out.startTag(null, "g"); - out.attribute(null, "id", Integer.toHexString(id.appWidgetId)); - out.attribute(null, "h", Integer.toHexString(id.host.tag)); - if (id.provider != null) { - out.attribute(null, "p", Integer.toHexString(id.provider.tag)); - } - if (id.options != null) { - out.attribute(null, "min_width", Integer.toHexString(id.options.getInt( - AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH))); - out.attribute(null, "min_height", Integer.toHexString(id.options.getInt( - AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT))); - out.attribute(null, "max_width", Integer.toHexString(id.options.getInt( - AppWidgetManager.OPTION_APPWIDGET_MAX_WIDTH))); - out.attribute(null, "max_height", Integer.toHexString(id.options.getInt( - AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT))); - out.attribute(null, "host_category", Integer.toHexString(id.options.getInt( - AppWidgetManager.OPTION_APPWIDGET_HOST_CATEGORY))); - } - out.endTag(null, "g"); - } - - Iterator<String> it = mPackagesWithBindWidgetPermission.iterator(); - while (it.hasNext()) { - out.startTag(null, "b"); - out.attribute(null, "packageName", it.next()); - out.endTag(null, "b"); - } - - out.endTag(null, "gs"); - - out.endDocument(); - return true; - } catch (IOException e) { - Slog.w(TAG, "Failed to write state: " + e); - return false; - } - } - - @SuppressWarnings("unused") - void readStateFromFileLocked(FileInputStream stream) { - boolean success = false; - int version = 0; - try { - XmlPullParser parser = Xml.newPullParser(); - parser.setInput(stream, null); - - int type; - int providerIndex = 0; - HashMap<Integer, Provider> loadedProviders = new HashMap<Integer, Provider>(); - do { - type = parser.next(); - if (type == XmlPullParser.START_TAG) { - String tag = parser.getName(); - if ("gs".equals(tag)) { - String attributeValue = parser.getAttributeValue(null, "version"); - try { - version = Integer.parseInt(attributeValue); - } catch (NumberFormatException e) { - version = 0; - } - } else if ("p".equals(tag)) { - // TODO: do we need to check that this package has the same signature - // as before? - String pkg = parser.getAttributeValue(null, "pkg"); - String cl = parser.getAttributeValue(null, "cl"); - - final IPackageManager packageManager = AppGlobals.getPackageManager(); - try { - packageManager.getReceiverInfo(new ComponentName(pkg, cl), 0, mUserId); - } catch (RemoteException e) { - String[] pkgs = mContext.getPackageManager() - .currentToCanonicalPackageNames(new String[] { pkg }); - pkg = pkgs[0]; - } - - Provider p = lookupProviderLocked(new ComponentName(pkg, cl)); - if (p == null && mSafeMode) { - // if we're in safe mode, make a temporary one - p = new Provider(); - p.info = new AppWidgetProviderInfo(); - p.info.provider = new ComponentName(pkg, cl); - p.zombie = true; - mInstalledProviders.add(p); - } - if (p != null) { - // if it wasn't uninstalled or something - loadedProviders.put(providerIndex, p); - } - providerIndex++; - } else if ("h".equals(tag)) { - Host host = new Host(); - - // TODO: do we need to check that this package has the same signature - // as before? - host.packageName = parser.getAttributeValue(null, "pkg"); - try { - host.uid = getUidForPackage(host.packageName); - } catch (PackageManager.NameNotFoundException ex) { - host.zombie = true; - } - if (!host.zombie || mSafeMode) { - // In safe mode, we don't discard the hosts we don't recognize - // so that they're not pruned from our list. Otherwise, we do. - host.hostId = Integer - .parseInt(parser.getAttributeValue(null, "id"), 16); - mHosts.add(host); - } - } else if ("b".equals(tag)) { - String packageName = parser.getAttributeValue(null, "packageName"); - if (packageName != null) { - mPackagesWithBindWidgetPermission.add(packageName); - } - } else if ("g".equals(tag)) { - AppWidgetId id = new AppWidgetId(); - id.appWidgetId = Integer.parseInt(parser.getAttributeValue(null, "id"), 16); - if (id.appWidgetId >= mNextAppWidgetId) { - mNextAppWidgetId = id.appWidgetId + 1; - } - - Bundle options = new Bundle(); - String minWidthString = parser.getAttributeValue(null, "min_width"); - if (minWidthString != null) { - options.putInt(AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH, - Integer.parseInt(minWidthString, 16)); - } - String minHeightString = parser.getAttributeValue(null, "min_height"); - if (minHeightString != null) { - options.putInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT, - Integer.parseInt(minHeightString, 16)); - } - String maxWidthString = parser.getAttributeValue(null, "max_width"); - if (maxWidthString != null) { - options.putInt(AppWidgetManager.OPTION_APPWIDGET_MAX_WIDTH, - Integer.parseInt(maxWidthString, 16)); - } - String maxHeightString = parser.getAttributeValue(null, "max_height"); - if (maxHeightString != null) { - options.putInt(AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT, - Integer.parseInt(maxHeightString, 16)); - } - String categoryString = parser.getAttributeValue(null, "host_category"); - if (categoryString != null) { - options.putInt(AppWidgetManager.OPTION_APPWIDGET_HOST_CATEGORY, - Integer.parseInt(categoryString, 16)); - } - id.options = options; - - String providerString = parser.getAttributeValue(null, "p"); - if (providerString != null) { - // there's no provider if it hasn't been bound yet. - // maybe we don't have to save this, but it brings the system - // to the state it was in. - int pIndex = Integer.parseInt(providerString, 16); - id.provider = loadedProviders.get(pIndex); - if (false) { - Slog.d(TAG, "bound appWidgetId=" + id.appWidgetId + " to provider " - + pIndex + " which is " + id.provider); - } - if (id.provider == null) { - // This provider is gone. We just let the host figure out - // that this happened when it fails to load it. - continue; - } - } - - int hIndex = Integer.parseInt(parser.getAttributeValue(null, "h"), 16); - id.host = mHosts.get(hIndex); - if (id.host == null) { - // This host is gone. - continue; - } - - if (id.provider != null) { - id.provider.instances.add(id); - } - id.host.instances.add(id); - mAppWidgetIds.add(id); - } - } - } while (type != XmlPullParser.END_DOCUMENT); - success = true; - } catch (NullPointerException e) { - Slog.w(TAG, "failed parsing " + e); - } catch (NumberFormatException e) { - Slog.w(TAG, "failed parsing " + e); - } catch (XmlPullParserException e) { - Slog.w(TAG, "failed parsing " + e); - } catch (IOException e) { - Slog.w(TAG, "failed parsing " + e); - } catch (IndexOutOfBoundsException e) { - Slog.w(TAG, "failed parsing " + e); - } - - if (success) { - // delete any hosts that didn't manage to get connected (should happen) - // if it matters, they'll be reconnected. - for (int i = mHosts.size() - 1; i >= 0; i--) { - pruneHostLocked(mHosts.get(i)); - } - // upgrade the database if needed - performUpgrade(version); - } else { - // failed reading, clean up - Slog.w(TAG, "Failed to read state, clearing widgets and hosts."); - - mAppWidgetIds.clear(); - mHosts.clear(); - final int N = mInstalledProviders.size(); - for (int i = 0; i < N; i++) { - mInstalledProviders.get(i).instances.clear(); - } - } - } - - private void performUpgrade(int fromVersion) { - if (fromVersion < CURRENT_VERSION) { - Slog.v(TAG, "Upgrading widget database from " + fromVersion + " to " + CURRENT_VERSION - + " for user " + mUserId); - } - - int version = fromVersion; - - // Update 1: keyguard moved from package "android" to "com.android.keyguard" - if (version == 0) { - for (int i = 0; i < mHosts.size(); i++) { - Host host = mHosts.get(i); - if (host != null && "android".equals(host.packageName) - && host.hostId == KEYGUARD_HOST_ID) { - host.packageName = KEYGUARD_HOST_PACKAGE; - } - } - version = 1; - } - - if (version != CURRENT_VERSION) { - throw new IllegalStateException("Failed to upgrade widget database"); - } - } - - static File getSettingsFile(int userId) { - return new File(Environment.getUserSystemDirectory(userId), SETTINGS_FILENAME); - } - - AtomicFile savedStateFile() { - File dir = Environment.getUserSystemDirectory(mUserId); - File settingsFile = getSettingsFile(mUserId); - if (!settingsFile.exists() && mUserId == 0) { - if (!dir.exists()) { - dir.mkdirs(); - } - // Migrate old data - File oldFile = new File("/data/system/" + SETTINGS_FILENAME); - // Method doesn't throw an exception on failure. Ignore any errors - // in moving the file (like non-existence) - oldFile.renameTo(settingsFile); - } - return new AtomicFile(settingsFile); - } - - void onUserStopping() { - // prune the ones we don't want to keep - int N = mInstalledProviders.size(); - for (int i = N - 1; i >= 0; i--) { - Provider p = mInstalledProviders.get(i); - cancelBroadcasts(p); - } - } - - void onUserRemoved() { - getSettingsFile(mUserId).delete(); - } - - boolean addProvidersForPackageLocked(String pkgName) { - boolean providersAdded = false; - Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE); - intent.setPackage(pkgName); - List<ResolveInfo> broadcastReceivers; - try { - broadcastReceivers = mPm.queryIntentReceivers(intent, - intent.resolveTypeIfNeeded(mContext.getContentResolver()), - PackageManager.GET_META_DATA, mUserId); - } catch (RemoteException re) { - // Shouldn't happen, local call - return false; - } - final int N = broadcastReceivers == null ? 0 : broadcastReceivers.size(); - for (int i = 0; i < N; i++) { - ResolveInfo ri = broadcastReceivers.get(i); - ActivityInfo ai = ri.activityInfo; - if ((ai.applicationInfo.flags & ApplicationInfo.FLAG_EXTERNAL_STORAGE) != 0) { - continue; - } - if (pkgName.equals(ai.packageName)) { - addProviderLocked(ri); - providersAdded = true; - } - } - - return providersAdded; - } - - /** - * Updates all providers with the specified package names, and records any providers that were - * pruned. - * - * @return whether any providers were updated - */ - boolean updateProvidersForPackageLocked(String pkgName, Set<ComponentName> removedProviders) { - boolean providersUpdated = false; - HashSet<String> keep = new HashSet<String>(); - Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE); - intent.setPackage(pkgName); - List<ResolveInfo> broadcastReceivers; - try { - broadcastReceivers = mPm.queryIntentReceivers(intent, - intent.resolveTypeIfNeeded(mContext.getContentResolver()), - PackageManager.GET_META_DATA, mUserId); - } catch (RemoteException re) { - // Shouldn't happen, local call - return false; - } - - // add the missing ones and collect which ones to keep - int N = broadcastReceivers == null ? 0 : broadcastReceivers.size(); - for (int i = 0; i < N; i++) { - ResolveInfo ri = broadcastReceivers.get(i); - ActivityInfo ai = ri.activityInfo; - if ((ai.applicationInfo.flags & ApplicationInfo.FLAG_EXTERNAL_STORAGE) != 0) { - continue; - } - if (pkgName.equals(ai.packageName)) { - ComponentName component = new ComponentName(ai.packageName, ai.name); - Provider p = lookupProviderLocked(component); - if (p == null) { - if (addProviderLocked(ri)) { - keep.add(ai.name); - providersUpdated = true; - } - } else { - Provider parsed = parseProviderInfoXml(component, ri); - if (parsed != null) { - keep.add(ai.name); - // Use the new AppWidgetProviderInfo. - p.info = parsed.info; - // If it's enabled - final int M = p.instances.size(); - if (M > 0) { - int[] appWidgetIds = getAppWidgetIds(p); - // Reschedule for the new updatePeriodMillis (don't worry about handling - // it specially if updatePeriodMillis didn't change because we just sent - // an update, and the next one will be updatePeriodMillis from now). - cancelBroadcasts(p); - registerForBroadcastsLocked(p, appWidgetIds); - // If it's currently showing, call back with the new - // AppWidgetProviderInfo. - for (int j = 0; j < M; j++) { - AppWidgetId id = p.instances.get(j); - id.views = null; - if (id.host != null && id.host.callbacks != null) { - try { - id.host.callbacks.providerChanged(id.appWidgetId, p.info, - mUserId); - } catch (RemoteException ex) { - // It failed; remove the callback. No need to prune because - // we know that this host is still referenced by this - // instance. - id.host.callbacks = null; - } - } - } - // Now that we've told the host, push out an update. - sendUpdateIntentLocked(p, appWidgetIds); - providersUpdated = true; - } - } - } - } - } - - // prune the ones we don't want to keep - N = mInstalledProviders.size(); - for (int i = N - 1; i >= 0; i--) { - Provider p = mInstalledProviders.get(i); - if (pkgName.equals(p.info.provider.getPackageName()) - && !keep.contains(p.info.provider.getClassName())) { - if (removedProviders != null) { - removedProviders.add(p.info.provider); - } - removeProviderLocked(i, p); - providersUpdated = true; - } - } - - return providersUpdated; - } - - boolean removeProvidersForPackageLocked(String pkgName) { - boolean providersRemoved = false; - int N = mInstalledProviders.size(); - for (int i = N - 1; i >= 0; i--) { - Provider p = mInstalledProviders.get(i); - if (pkgName.equals(p.info.provider.getPackageName())) { - removeProviderLocked(i, p); - providersRemoved = true; - } - } - - // Delete the hosts for this package too - // - // By now, we have removed any AppWidgets that were in any hosts here, - // so we don't need to worry about sending DISABLE broadcasts to them. - N = mHosts.size(); - for (int i = N - 1; i >= 0; i--) { - Host host = mHosts.get(i); - if (pkgName.equals(host.packageName)) { - deleteHostLocked(host); - } - } - - return providersRemoved; - } - - void notifyHostsForProvidersChangedLocked() { - final int N = mHosts.size(); - for (int i = N - 1; i >= 0; i--) { - Host host = mHosts.get(i); - try { - if (host.callbacks != null) { - host.callbacks.providersChanged(mUserId); - } - } catch (RemoteException ex) { - // It failed; remove the callback. No need to prune because - // we know that this host is still referenced by this - // instance. - host.callbacks = null; - } - } - } -} |