services/core/java/com/android/server/pm/LauncherAppsService.java - platform/frameworks/base - Git at Google

 /*
  * Copyright (C) 2014 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.pm;

 import android.app.AppGlobals;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
 import android.content.pm.ILauncherApps;
 import android.content.pm.IOnAppsChangedListener;
 import android.content.pm.IPackageManager;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageInfo;
 import android.content.pm.ResolveInfo;
 import android.content.pm.UserInfo;
 import android.graphics.Rect;
 import android.net.Uri;
 import android.os.Binder;
 import android.os.Bundle;
 import android.os.IInterface;
 import android.os.RemoteCallbackList;
 import android.os.RemoteException;
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.provider.Settings;
 import android.util.Log;
 import android.util.Slog;

 import com.android.internal.content.PackageMonitor;
 import com.android.server.SystemService;

 import java.util.ArrayList;
 import java.util.List;

 /**
  * Service that manages requests and callbacks for launchers that support
  * managed profiles.
  */

 public class LauncherAppsService extends SystemService {

     private final LauncherAppsImpl mLauncherAppsImpl;

     public LauncherAppsService(Context context) {
         super(context);
         mLauncherAppsImpl = new LauncherAppsImpl(context);
     }

     @Override
     public void onStart() {
         publishBinderService(Context.LAUNCHER_APPS_SERVICE, mLauncherAppsImpl);
     }

     class LauncherAppsImpl extends ILauncherApps.Stub {
         private static final boolean DEBUG = false;
         private static final String TAG = "LauncherAppsService";
         private final Context mContext;
         private final PackageManager mPm;
         private final UserManager mUm;
         private final PackageCallbackList<IOnAppsChangedListener> mListeners
                 = new PackageCallbackList<IOnAppsChangedListener>();

         private MyPackageMonitor mPackageMonitor = new MyPackageMonitor();

         public LauncherAppsImpl(Context context) {
             mContext = context;
             mPm = mContext.getPackageManager();
             mUm = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
         }

         /*
          * @see android.content.pm.ILauncherApps#addOnAppsChangedListener(
          *          android.content.pm.IOnAppsChangedListener)
          */
         @Override
         public void addOnAppsChangedListener(IOnAppsChangedListener listener) throws RemoteException {
             synchronized (mListeners) {
                 if (DEBUG) {
                     Log.d(TAG, "Adding listener from " + Binder.getCallingUserHandle());
                 }
                 if (mListeners.getRegisteredCallbackCount() == 0) {
                     if (DEBUG) {
                         Log.d(TAG, "Starting package monitoring");
                     }
                     startWatchingPackageBroadcasts();
                 }
                 mListeners.unregister(listener);
                 mListeners.register(listener, Binder.getCallingUserHandle());
             }
         }

         /*
          * @see android.content.pm.ILauncherApps#removeOnAppsChangedListener(
          *          android.content.pm.IOnAppsChangedListener)
          */
         @Override
         public void removeOnAppsChangedListener(IOnAppsChangedListener listener)
                 throws RemoteException {
             synchronized (mListeners) {
                 if (DEBUG) {
                     Log.d(TAG, "Removing listener from " + Binder.getCallingUserHandle());
                 }
                 mListeners.unregister(listener);
                 if (mListeners.getRegisteredCallbackCount() == 0) {
                     stopWatchingPackageBroadcasts();
                 }
             }
         }

         /**
          * Register a receiver to watch for package broadcasts
          */
         private void startWatchingPackageBroadcasts() {
             mPackageMonitor.register(mContext, null, UserHandle.ALL, true);
         }

         /**
          * Unregister package broadcast receiver
          */
         private void stopWatchingPackageBroadcasts() {
             if (DEBUG) {
                 Log.d(TAG, "Stopped watching for packages");
             }
             mPackageMonitor.unregister();
         }

         void checkCallbackCount() {
             synchronized (mListeners) {
                 if (DEBUG) {
                     Log.d(TAG, "Callback count = " + mListeners.getRegisteredCallbackCount());
                 }
                 if (mListeners.getRegisteredCallbackCount() == 0) {
                     stopWatchingPackageBroadcasts();
                 }
             }
         }

         /**
          * Checks if the caller is in the same group as the userToCheck.
          */
         private void ensureInUserProfiles(UserHandle userToCheck, String message) {
             final int callingUserId = UserHandle.getCallingUserId();
             final int targetUserId = userToCheck.getIdentifier();

             if (targetUserId == callingUserId) return;

             long ident = Binder.clearCallingIdentity();
             try {
                 UserInfo callingUserInfo = mUm.getUserInfo(callingUserId);
                 UserInfo targetUserInfo = mUm.getUserInfo(targetUserId);
                 if (targetUserInfo == null
                         || targetUserInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID
                         || targetUserInfo.profileGroupId != callingUserInfo.profileGroupId) {
                     throw new SecurityException(message);
                 }
             } finally {
                 Binder.restoreCallingIdentity(ident);
             }
         }

         /**
          * Checks if the user is enabled.
          */
         private boolean isUserEnabled(UserHandle user) {
             long ident = Binder.clearCallingIdentity();
             try {
                 UserInfo targetUserInfo = mUm.getUserInfo(user.getIdentifier());
                 return targetUserInfo != null && targetUserInfo.isEnabled();
             } finally {
                 Binder.restoreCallingIdentity(ident);
             }
         }

         @Override
         public List<ResolveInfo> getLauncherActivities(String packageName, UserHandle user)
                 throws RemoteException {
             ensureInUserProfiles(user, "Cannot retrieve activities for unrelated profile " + user);
             if (!isUserEnabled(user)) {
                 return new ArrayList<ResolveInfo>();
             }

             final Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
             mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
             mainIntent.setPackage(packageName);
             long ident = Binder.clearCallingIdentity();
             try {
                 List<ResolveInfo> apps = mPm.queryIntentActivitiesAsUser(mainIntent, 0 /* flags */,
                         user.getIdentifier());
                 return apps;
             } finally {
                 Binder.restoreCallingIdentity(ident);
             }
         }

         @Override
         public ResolveInfo resolveActivity(Intent intent, UserHandle user)
                 throws RemoteException {
             ensureInUserProfiles(user, "Cannot resolve activity for unrelated profile " + user);
             if (!isUserEnabled(user)) {
                 return null;
             }

             long ident = Binder.clearCallingIdentity();
             try {
                 ResolveInfo app = mPm.resolveActivityAsUser(intent, 0, user.getIdentifier());
                 return app;
             } finally {
                 Binder.restoreCallingIdentity(ident);
             }
         }

         @Override
         public boolean isPackageEnabled(String packageName, UserHandle user)
                 throws RemoteException {
             ensureInUserProfiles(user, "Cannot check package for unrelated profile " + user);
             if (!isUserEnabled(user)) {
                 return false;
             }

             long ident = Binder.clearCallingIdentity();
             try {
                 IPackageManager pm = AppGlobals.getPackageManager();
                 PackageInfo info = pm.getPackageInfo(packageName, 0, user.getIdentifier());
                 return info != null && info.applicationInfo.enabled;
             } finally {
                 Binder.restoreCallingIdentity(ident);
             }
         }

         @Override
         public boolean isActivityEnabled(ComponentName component, UserHandle user)
                 throws RemoteException {
             ensureInUserProfiles(user, "Cannot check component for unrelated profile " + user);
             if (!isUserEnabled(user)) {
                 return false;
             }

             long ident = Binder.clearCallingIdentity();
             try {
                 IPackageManager pm = AppGlobals.getPackageManager();
                 ActivityInfo info = pm.getActivityInfo(component, 0, user.getIdentifier());
                 return info != null;
             } finally {
                 Binder.restoreCallingIdentity(ident);
             }
         }

         @Override
         public void startActivityAsUser(ComponentName component, Rect sourceBounds,
                 Bundle opts, UserHandle user) throws RemoteException {
             ensureInUserProfiles(user, "Cannot start activity for unrelated profile " + user);
             if (!isUserEnabled(user)) {
                 throw new IllegalStateException("Cannot start activity for disabled profile "  + user);
             }

             Intent launchIntent = new Intent(Intent.ACTION_MAIN);
             launchIntent.addCategory(Intent.CATEGORY_LAUNCHER);
             launchIntent.setSourceBounds(sourceBounds);
             launchIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK
                     | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
             launchIntent.setPackage(component.getPackageName());

             long ident = Binder.clearCallingIdentity();
             try {
                 IPackageManager pm = AppGlobals.getPackageManager();
                 ActivityInfo info = pm.getActivityInfo(component, 0, user.getIdentifier());
                 if (!info.exported) {
                     throw new SecurityException("Cannot launch non-exported components "
                             + component);
                 }

                 // Check that the component actually has Intent.CATEGORY_LAUCNCHER
                 // as calling startActivityAsUser ignores the category and just
                 // resolves based on the component if present.
                 List<ResolveInfo> apps = mPm.queryIntentActivitiesAsUser(launchIntent,
                         0 /* flags */, user.getIdentifier());
                 final int size = apps.size();
                 for (int i = 0; i < size; ++i) {
                     ActivityInfo activityInfo = apps.get(i).activityInfo;
                     if (activityInfo.packageName.equals(component.getPackageName()) &&
                             activityInfo.name.equals(component.getClassName())) {
                         // Found an activity with category launcher that matches
                         // this component so ok to launch.
                         launchIntent.setComponent(component);
                         mContext.startActivityAsUser(launchIntent, opts, user);
                         return;
                     }
                 }
                 throw new SecurityException("Attempt to launch activity without "
                         + " category Intent.CATEGORY_LAUNCHER " + component);
             } finally {
                 Binder.restoreCallingIdentity(ident);
             }
         }

         @Override
         public void showAppDetailsAsUser(ComponentName component, Rect sourceBounds,
                 Bundle opts, UserHandle user) throws RemoteException {
             ensureInUserProfiles(user, "Cannot show app details for unrelated profile " + user);
             if (!isUserEnabled(user)) {
                 throw new IllegalStateException("Cannot show app details for disabled profile "
                         + user);
             }

             long ident = Binder.clearCallingIdentity();
             try {
                 String packageName = component.getPackageName();
                 Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS,
                         Uri.fromParts("package", packageName, null));
                 intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK |
                         Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
                 intent.setSourceBounds(sourceBounds);
                 mContext.startActivityAsUser(intent, opts, user);
             } finally {
                 Binder.restoreCallingIdentity(ident);
             }
         }


         private class MyPackageMonitor extends PackageMonitor {

             /** Checks if user is a profile of or same as listeningUser.
               * and the user is enabled. */
             private boolean isEnabledProfileOf(UserHandle user, UserHandle listeningUser,
                     String debugMsg) {
                 if (user.getIdentifier() == listeningUser.getIdentifier()) {
                     if (DEBUG) Log.d(TAG, "Delivering msg to same user " + debugMsg);
                     return true;
                 }
                 long ident = Binder.clearCallingIdentity();
                 try {
                     UserInfo userInfo = mUm.getUserInfo(user.getIdentifier());
                     UserInfo listeningUserInfo = mUm.getUserInfo(listeningUser.getIdentifier());
                     if (userInfo == null || listeningUserInfo == null
                             || userInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID
                             || userInfo.profileGroupId != listeningUserInfo.profileGroupId
                             || !userInfo.isEnabled()) {
                         if (DEBUG) {
                             Log.d(TAG, "Not delivering msg from " + user + " to " + listeningUser + ":"
                                     + debugMsg);
                         }
                         return false;
                     } else {
                         if (DEBUG) {
                             Log.d(TAG, "Delivering msg from " + user + " to " + listeningUser + ":"
                                     + debugMsg);
                         }
                         return true;
                     }
                 } finally {
                     Binder.restoreCallingIdentity(ident);
                 }
             }

             @Override
             public void onPackageAdded(String packageName, int uid) {
                 UserHandle user = new UserHandle(getChangingUserId());
                 final int n = mListeners.beginBroadcast();
                 for (int i = 0; i < n; i++) {
                     IOnAppsChangedListener listener = mListeners.getBroadcastItem(i);
                     UserHandle listeningUser = (UserHandle) mListeners.getBroadcastCookie(i);
                     if (!isEnabledProfileOf(user, listeningUser, "onPackageAdded")) continue;
                     try {
                         listener.onPackageAdded(user, packageName);
                     } catch (RemoteException re) {
                         Slog.d(TAG, "Callback failed ", re);
                     }
                 }
                 mListeners.finishBroadcast();

                 super.onPackageAdded(packageName, uid);
             }

             @Override
             public void onPackageRemoved(String packageName, int uid) {
                 UserHandle user = new UserHandle(getChangingUserId());
                 final int n = mListeners.beginBroadcast();
                 for (int i = 0; i < n; i++) {
                     IOnAppsChangedListener listener = mListeners.getBroadcastItem(i);
                     UserHandle listeningUser = (UserHandle) mListeners.getBroadcastCookie(i);
                     if (!isEnabledProfileOf(user, listeningUser, "onPackageRemoved")) continue;
                     try {
                         listener.onPackageRemoved(user, packageName);
                     } catch (RemoteException re) {
                         Slog.d(TAG, "Callback failed ", re);
                     }
                 }
                 mListeners.finishBroadcast();

                 super.onPackageRemoved(packageName, uid);
             }

             @Override
             public void onPackageModified(String packageName) {
                 UserHandle user = new UserHandle(getChangingUserId());
                 final int n = mListeners.beginBroadcast();
                 for (int i = 0; i < n; i++) {
                     IOnAppsChangedListener listener = mListeners.getBroadcastItem(i);
                     UserHandle listeningUser = (UserHandle) mListeners.getBroadcastCookie(i);
                     if (!isEnabledProfileOf(user, listeningUser, "onPackageModified")) continue;
                     try {
                         listener.onPackageChanged(user, packageName);
                     } catch (RemoteException re) {
                         Slog.d(TAG, "Callback failed ", re);
                     }
                 }
                 mListeners.finishBroadcast();

                 super.onPackageModified(packageName);
             }

             @Override
             public void onPackagesAvailable(String[] packages) {
                 UserHandle user = new UserHandle(getChangingUserId());
                 final int n = mListeners.beginBroadcast();
                 for (int i = 0; i < n; i++) {
                     IOnAppsChangedListener listener = mListeners.getBroadcastItem(i);
                     UserHandle listeningUser = (UserHandle) mListeners.getBroadcastCookie(i);
                     if (!isEnabledProfileOf(user, listeningUser, "onPackagesAvailable")) continue;
                     try {
                         listener.onPackagesAvailable(user, packages, isReplacing());
                     } catch (RemoteException re) {
                         Slog.d(TAG, "Callback failed ", re);
                     }
                 }
                 mListeners.finishBroadcast();

                 super.onPackagesAvailable(packages);
             }

             @Override
             public void onPackagesUnavailable(String[] packages) {
                 UserHandle user = new UserHandle(getChangingUserId());
                 final int n = mListeners.beginBroadcast();
                 for (int i = 0; i < n; i++) {
                     IOnAppsChangedListener listener = mListeners.getBroadcastItem(i);
                     UserHandle listeningUser = (UserHandle) mListeners.getBroadcastCookie(i);
                     if (!isEnabledProfileOf(user, listeningUser, "onPackagesUnavailable")) continue;
                     try {
                         listener.onPackagesUnavailable(user, packages, isReplacing());
                     } catch (RemoteException re) {
                         Slog.d(TAG, "Callback failed ", re);
                     }
                 }
                 mListeners.finishBroadcast();

                 super.onPackagesUnavailable(packages);
             }

         }

         class PackageCallbackList<T extends IInterface> extends RemoteCallbackList<T> {
             @Override
             public void onCallbackDied(T callback, Object cookie) {
                 checkCallbackCount();
             }
         }
     }
 }
	/*
	* Copyright (C) 2014 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.pm;

	import android.app.AppGlobals;
	import android.content.ComponentName;
	import android.content.Context;
	import android.content.Intent;
	import android.content.pm.ActivityInfo;
	import android.content.pm.ILauncherApps;
	import android.content.pm.IOnAppsChangedListener;
	import android.content.pm.IPackageManager;
	import android.content.pm.PackageManager;
	import android.content.pm.PackageInfo;
	import android.content.pm.ResolveInfo;
	import android.content.pm.UserInfo;
	import android.graphics.Rect;
	import android.net.Uri;
	import android.os.Binder;
	import android.os.Bundle;
	import android.os.IInterface;
	import android.os.RemoteCallbackList;
	import android.os.RemoteException;
	import android.os.UserHandle;
	import android.os.UserManager;
	import android.provider.Settings;
	import android.util.Log;
	import android.util.Slog;

	import com.android.internal.content.PackageMonitor;
	import com.android.server.SystemService;

	import java.util.ArrayList;
	import java.util.List;

	/**
	* Service that manages requests and callbacks for launchers that support
	* managed profiles.
	*/

	public class LauncherAppsService extends SystemService {

	private final LauncherAppsImpl mLauncherAppsImpl;

	public LauncherAppsService(Context context) {
	super(context);
	mLauncherAppsImpl = new LauncherAppsImpl(context);
	}

	@Override
	public void onStart() {
	publishBinderService(Context.LAUNCHER_APPS_SERVICE, mLauncherAppsImpl);
	}

	class LauncherAppsImpl extends ILauncherApps.Stub {
	private static final boolean DEBUG = false;
	private static final String TAG = "LauncherAppsService";
	private final Context mContext;
	private final PackageManager mPm;
	private final UserManager mUm;
	private final PackageCallbackList<IOnAppsChangedListener> mListeners
	= new PackageCallbackList<IOnAppsChangedListener>();

	private MyPackageMonitor mPackageMonitor = new MyPackageMonitor();

	public LauncherAppsImpl(Context context) {
	mContext = context;
	mPm = mContext.getPackageManager();
	mUm = (UserManager) mContext.getSystemService(Context.USER_SERVICE);
	}

	/*
	* @see android.content.pm.ILauncherApps#addOnAppsChangedListener(
	* android.content.pm.IOnAppsChangedListener)
	*/
	@Override
	public void addOnAppsChangedListener(IOnAppsChangedListener listener) throws RemoteException {
	synchronized (mListeners) {
	if (DEBUG) {
	Log.d(TAG, "Adding listener from " + Binder.getCallingUserHandle());
	}
	if (mListeners.getRegisteredCallbackCount() == 0) {
	if (DEBUG) {
	Log.d(TAG, "Starting package monitoring");
	}
	startWatchingPackageBroadcasts();
	}
	mListeners.unregister(listener);
	mListeners.register(listener, Binder.getCallingUserHandle());
	}
	}

	/*
	* @see android.content.pm.ILauncherApps#removeOnAppsChangedListener(
	* android.content.pm.IOnAppsChangedListener)
	*/
	@Override
	public void removeOnAppsChangedListener(IOnAppsChangedListener listener)
	throws RemoteException {
	synchronized (mListeners) {
	if (DEBUG) {
	Log.d(TAG, "Removing listener from " + Binder.getCallingUserHandle());
	}
	mListeners.unregister(listener);
	if (mListeners.getRegisteredCallbackCount() == 0) {
	stopWatchingPackageBroadcasts();
	}
	}
	}

	/**
	* Register a receiver to watch for package broadcasts
	*/
	private void startWatchingPackageBroadcasts() {
	mPackageMonitor.register(mContext, null, UserHandle.ALL, true);
	}

	/**
	* Unregister package broadcast receiver
	*/
	private void stopWatchingPackageBroadcasts() {
	if (DEBUG) {
	Log.d(TAG, "Stopped watching for packages");
	}
	mPackageMonitor.unregister();
	}

	void checkCallbackCount() {
	synchronized (mListeners) {
	if (DEBUG) {
	Log.d(TAG, "Callback count = " + mListeners.getRegisteredCallbackCount());
	}
	if (mListeners.getRegisteredCallbackCount() == 0) {
	stopWatchingPackageBroadcasts();
	}
	}
	}

	/**
	* Checks if the caller is in the same group as the userToCheck.
	*/
	private void ensureInUserProfiles(UserHandle userToCheck, String message) {
	final int callingUserId = UserHandle.getCallingUserId();
	final int targetUserId = userToCheck.getIdentifier();

	if (targetUserId == callingUserId) return;

	long ident = Binder.clearCallingIdentity();
	try {
	UserInfo callingUserInfo = mUm.getUserInfo(callingUserId);
	UserInfo targetUserInfo = mUm.getUserInfo(targetUserId);
	if (targetUserInfo == null
	\|\| targetUserInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID
	\|\| targetUserInfo.profileGroupId != callingUserInfo.profileGroupId) {
	throw new SecurityException(message);
	}
	} finally {
	Binder.restoreCallingIdentity(ident);
	}
	}

	/**
	* Checks if the user is enabled.
	*/
	private boolean isUserEnabled(UserHandle user) {
	long ident = Binder.clearCallingIdentity();
	try {
	UserInfo targetUserInfo = mUm.getUserInfo(user.getIdentifier());
	return targetUserInfo != null && targetUserInfo.isEnabled();
	} finally {
	Binder.restoreCallingIdentity(ident);
	}
	}

	@Override
	public List<ResolveInfo> getLauncherActivities(String packageName, UserHandle user)
	throws RemoteException {
	ensureInUserProfiles(user, "Cannot retrieve activities for unrelated profile " + user);
	if (!isUserEnabled(user)) {
	return new ArrayList<ResolveInfo>();
	}

	final Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
	mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
	mainIntent.setPackage(packageName);
	long ident = Binder.clearCallingIdentity();
	try {
	List<ResolveInfo> apps = mPm.queryIntentActivitiesAsUser(mainIntent, 0 /* flags */,
	user.getIdentifier());
	return apps;
	} finally {
	Binder.restoreCallingIdentity(ident);
	}
	}

	@Override
	public ResolveInfo resolveActivity(Intent intent, UserHandle user)
	throws RemoteException {
	ensureInUserProfiles(user, "Cannot resolve activity for unrelated profile " + user);
	if (!isUserEnabled(user)) {
	return null;
	}

	long ident = Binder.clearCallingIdentity();
	try {
	ResolveInfo app = mPm.resolveActivityAsUser(intent, 0, user.getIdentifier());
	return app;
	} finally {
	Binder.restoreCallingIdentity(ident);
	}
	}

	@Override
	public boolean isPackageEnabled(String packageName, UserHandle user)
	throws RemoteException {
	ensureInUserProfiles(user, "Cannot check package for unrelated profile " + user);
	if (!isUserEnabled(user)) {
	return false;
	}

	long ident = Binder.clearCallingIdentity();
	try {
	IPackageManager pm = AppGlobals.getPackageManager();
	PackageInfo info = pm.getPackageInfo(packageName, 0, user.getIdentifier());
	return info != null && info.applicationInfo.enabled;
	} finally {
	Binder.restoreCallingIdentity(ident);
	}
	}

	@Override
	public boolean isActivityEnabled(ComponentName component, UserHandle user)
	throws RemoteException {
	ensureInUserProfiles(user, "Cannot check component for unrelated profile " + user);
	if (!isUserEnabled(user)) {
	return false;
	}

	long ident = Binder.clearCallingIdentity();
	try {
	IPackageManager pm = AppGlobals.getPackageManager();
	ActivityInfo info = pm.getActivityInfo(component, 0, user.getIdentifier());
	return info != null;
	} finally {
	Binder.restoreCallingIdentity(ident);
	}
	}

	@Override
	public void startActivityAsUser(ComponentName component, Rect sourceBounds,
	Bundle opts, UserHandle user) throws RemoteException {
	ensureInUserProfiles(user, "Cannot start activity for unrelated profile " + user);
	if (!isUserEnabled(user)) {
	throw new IllegalStateException("Cannot start activity for disabled profile " + user);
	}

	Intent launchIntent = new Intent(Intent.ACTION_MAIN);
	launchIntent.addCategory(Intent.CATEGORY_LAUNCHER);
	launchIntent.setSourceBounds(sourceBounds);
	launchIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK
	\| Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
	launchIntent.setPackage(component.getPackageName());

	long ident = Binder.clearCallingIdentity();
	try {
	IPackageManager pm = AppGlobals.getPackageManager();
	ActivityInfo info = pm.getActivityInfo(component, 0, user.getIdentifier());
	if (!info.exported) {
	throw new SecurityException("Cannot launch non-exported components "
	+ component);
	}

	// Check that the component actually has Intent.CATEGORY_LAUCNCHER
	// as calling startActivityAsUser ignores the category and just
	// resolves based on the component if present.
	List<ResolveInfo> apps = mPm.queryIntentActivitiesAsUser(launchIntent,
	0 /* flags */, user.getIdentifier());
	final int size = apps.size();
	for (int i = 0; i < size; ++i) {
	ActivityInfo activityInfo = apps.get(i).activityInfo;
	if (activityInfo.packageName.equals(component.getPackageName()) &&
	activityInfo.name.equals(component.getClassName())) {
	// Found an activity with category launcher that matches
	// this component so ok to launch.
	launchIntent.setComponent(component);
	mContext.startActivityAsUser(launchIntent, opts, user);
	return;
	}
	}
	throw new SecurityException("Attempt to launch activity without "
	+ " category Intent.CATEGORY_LAUNCHER " + component);
	} finally {
	Binder.restoreCallingIdentity(ident);
	}
	}

	@Override
	public void showAppDetailsAsUser(ComponentName component, Rect sourceBounds,
	Bundle opts, UserHandle user) throws RemoteException {
	ensureInUserProfiles(user, "Cannot show app details for unrelated profile " + user);
	if (!isUserEnabled(user)) {
	throw new IllegalStateException("Cannot show app details for disabled profile "
	+ user);
	}

	long ident = Binder.clearCallingIdentity();
	try {
	String packageName = component.getPackageName();
	Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS,
	Uri.fromParts("package", packageName, null));
	intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK \| Intent.FLAG_ACTIVITY_CLEAR_TASK \|
	Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
	intent.setSourceBounds(sourceBounds);
	mContext.startActivityAsUser(intent, opts, user);
	} finally {
	Binder.restoreCallingIdentity(ident);
	}
	}


	private class MyPackageMonitor extends PackageMonitor {

	/** Checks if user is a profile of or same as listeningUser.
	* and the user is enabled. */
	private boolean isEnabledProfileOf(UserHandle user, UserHandle listeningUser,
	String debugMsg) {
	if (user.getIdentifier() == listeningUser.getIdentifier()) {
	if (DEBUG) Log.d(TAG, "Delivering msg to same user " + debugMsg);
	return true;
	}
	long ident = Binder.clearCallingIdentity();
	try {
	UserInfo userInfo = mUm.getUserInfo(user.getIdentifier());
	UserInfo listeningUserInfo = mUm.getUserInfo(listeningUser.getIdentifier());
	if (userInfo == null \|\| listeningUserInfo == null
	\|\| userInfo.profileGroupId == UserInfo.NO_PROFILE_GROUP_ID
	\|\| userInfo.profileGroupId != listeningUserInfo.profileGroupId
	\|\| !userInfo.isEnabled()) {
	if (DEBUG) {
	Log.d(TAG, "Not delivering msg from " + user + " to " + listeningUser + ":"
	+ debugMsg);
	}
	return false;
	} else {
	if (DEBUG) {
	Log.d(TAG, "Delivering msg from " + user + " to " + listeningUser + ":"
	+ debugMsg);
	}
	return true;
	}
	} finally {
	Binder.restoreCallingIdentity(ident);
	}
	}

	@Override
	public void onPackageAdded(String packageName, int uid) {
	UserHandle user = new UserHandle(getChangingUserId());
	final int n = mListeners.beginBroadcast();
	for (int i = 0; i < n; i++) {
	IOnAppsChangedListener listener = mListeners.getBroadcastItem(i);
	UserHandle listeningUser = (UserHandle) mListeners.getBroadcastCookie(i);
	if (!isEnabledProfileOf(user, listeningUser, "onPackageAdded")) continue;
	try {
	listener.onPackageAdded(user, packageName);
	} catch (RemoteException re) {
	Slog.d(TAG, "Callback failed ", re);
	}
	}
	mListeners.finishBroadcast();

	super.onPackageAdded(packageName, uid);
	}

	@Override
	public void onPackageRemoved(String packageName, int uid) {
	UserHandle user = new UserHandle(getChangingUserId());
	final int n = mListeners.beginBroadcast();
	for (int i = 0; i < n; i++) {
	IOnAppsChangedListener listener = mListeners.getBroadcastItem(i);
	UserHandle listeningUser = (UserHandle) mListeners.getBroadcastCookie(i);
	if (!isEnabledProfileOf(user, listeningUser, "onPackageRemoved")) continue;
	try {
	listener.onPackageRemoved(user, packageName);
	} catch (RemoteException re) {
	Slog.d(TAG, "Callback failed ", re);
	}
	}
	mListeners.finishBroadcast();

	super.onPackageRemoved(packageName, uid);
	}

	@Override
	public void onPackageModified(String packageName) {
	UserHandle user = new UserHandle(getChangingUserId());
	final int n = mListeners.beginBroadcast();
	for (int i = 0; i < n; i++) {
	IOnAppsChangedListener listener = mListeners.getBroadcastItem(i);
	UserHandle listeningUser = (UserHandle) mListeners.getBroadcastCookie(i);
	if (!isEnabledProfileOf(user, listeningUser, "onPackageModified")) continue;
	try {
	listener.onPackageChanged(user, packageName);
	} catch (RemoteException re) {
	Slog.d(TAG, "Callback failed ", re);
	}
	}
	mListeners.finishBroadcast();

	super.onPackageModified(packageName);
	}

	@Override
	public void onPackagesAvailable(String[] packages) {
	UserHandle user = new UserHandle(getChangingUserId());
	final int n = mListeners.beginBroadcast();
	for (int i = 0; i < n; i++) {
	IOnAppsChangedListener listener = mListeners.getBroadcastItem(i);
	UserHandle listeningUser = (UserHandle) mListeners.getBroadcastCookie(i);
	if (!isEnabledProfileOf(user, listeningUser, "onPackagesAvailable")) continue;
	try {
	listener.onPackagesAvailable(user, packages, isReplacing());
	} catch (RemoteException re) {
	Slog.d(TAG, "Callback failed ", re);
	}
	}
	mListeners.finishBroadcast();

	super.onPackagesAvailable(packages);
	}

	@Override
	public void onPackagesUnavailable(String[] packages) {
	UserHandle user = new UserHandle(getChangingUserId());
	final int n = mListeners.beginBroadcast();
	for (int i = 0; i < n; i++) {
	IOnAppsChangedListener listener = mListeners.getBroadcastItem(i);
	UserHandle listeningUser = (UserHandle) mListeners.getBroadcastCookie(i);
	if (!isEnabledProfileOf(user, listeningUser, "onPackagesUnavailable")) continue;
	try {
	listener.onPackagesUnavailable(user, packages, isReplacing());
	} catch (RemoteException re) {
	Slog.d(TAG, "Callback failed ", re);
	}
	}
	mListeners.finishBroadcast();

	super.onPackagesUnavailable(packages);
	}

	}

	class PackageCallbackList<T extends IInterface> extends RemoteCallbackList<T> {
	@Override
	public void onCallbackDied(T callback, Object cookie) {
	checkCallbackCount();
	}
	}
	}
	}