| /* | |
| * 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; | |
| } | |
| } | |
| } | |
| } |