User management and switching

Broadcast intents that get sent out when users are added/removed/switched.

More work on generating user-specific information in package manager queries.
APIs to update user name and query a user by id.
Removed Package.mSetStopped and mSetEnabled, since they're not user specific.

User removal:
- Cleanup ActivityManager, PackageManager, WallpaperManager, AppWidgetService
  and AccountManager.
- Shutdown processes belonging to the user.

Don't show vibrate option in long-press power if there's no vibrator.

Lock the screen when switching users, to force unlocking.

Change-Id: Ib23a721cb75285eef5fd6ba8c7272462764038fa

Author: Amith Yamasani

core/java/android/accounts/AccountManagerService.java

@@ -231,6 +231,14 @@ public void onReceive(Context context1, Intent intent) {
             }
         }, intentFilter);
 
+        IntentFilter userFilter = new IntentFilter();
+        userFilter.addAction(Intent.ACTION_USER_REMOVED);
+        mContext.registerReceiver(new BroadcastReceiver() {
+            @Override
+            public void onReceive(Context context, Intent intent) {
+                onUserRemoved(intent);
+            }
+        }, userFilter);
     }
 
     private UserAccounts initUser(int userId) {
@@ -347,6 +355,28 @@ protected UserAccounts getUserAccounts(int userId) {
         }
     }
 
+    private void onUserRemoved(Intent intent) {
+        int userId = intent.getIntExtra(Intent.EXTRA_USERID, -1);
+        if (userId < 1) return;
+
+        UserAccounts accounts;
+        synchronized (mUsers) {
+            accounts = mUsers.get(userId);
+            mUsers.remove(userId);
+        }
+        if (accounts == null) {
+            File dbFile = new File(getDatabaseName(userId));
+            dbFile.delete();
+            return;
+        }
+
+        synchronized (accounts.cacheLock) {
+            accounts.openHelper.close();
+            File dbFile = new File(getDatabaseName(userId));
+            dbFile.delete();
+        }
+    }
+
     private List<UserInfo> getAllUsers() {
         try {
             return AppGlobals.getPackageManager().getUsers();

core/java/android/app/ApplicationPackageManager.java

@@ -1211,6 +1211,18 @@ public List<UserInfo> getUsers() {
         }
     }
 
+    /**
+     * @hide
+     */
+    @Override
+    public UserInfo getUser(int userId) {
+        try {
+            return mPM.getUser(userId);
+        } catch (RemoteException re) {
+            return null;
+        }
+    }
+
     /**
      * @hide
      */
@@ -1228,7 +1240,10 @@ public boolean removeUser(int id) {
      */
     @Override
     public void updateUserName(int id, String name) {
-        // TODO:
+        try {
+            mPM.updateUserName(id, name);
+        } catch (RemoteException re) {
+        }
     }
 
     /**

core/java/android/content/Intent.java

@@ -2141,6 +2141,30 @@ public static Intent createChooser(Intent target, CharSequence title) {
     public static final String ACTION_PRE_BOOT_COMPLETED =
             "android.intent.action.PRE_BOOT_COMPLETED";
 
+    /**
+     * Broadcast sent to the system when a user is added. Carries an extra EXTRA_USERID that has the
+     * userid of the new user.
+     * @hide
+     */
+    public static final String ACTION_USER_ADDED =
+            "android.intent.action.USER_ADDED";
+
+    /**
+     * Broadcast sent to the system when a user is removed. Carries an extra EXTRA_USERID that has
+     * the userid of the user.
+     * @hide
+     */
+    public static final String ACTION_USER_REMOVED =
+            "android.intent.action.USER_REMOVED";
+
+    /**
+     * Broadcast sent to the system when the user switches. Carries an extra EXTRA_USERID that has
+     * the userid of the user to become the current one.
+     * @hide
+     */
+    public static final String ACTION_USER_SWITCHED =
+            "android.intent.action.USER_SWITCHED";
+
     // ---------------------------------------------------------------------
     // ---------------------------------------------------------------------
     // Standard intent categories (see addCategory()).
@@ -2682,6 +2706,13 @@ public static Intent createChooser(Intent target, CharSequence title) {
     public static final String EXTRA_LOCAL_ONLY =
         "android.intent.extra.LOCAL_ONLY";
 
+    /**
+     * The userid carried with broadcast intents related to addition, removal and switching of users
+     * - {@link #ACTION_USER_ADDED}, {@link #ACTION_USER_REMOVED} and {@link #ACTION_USER_SWITCHED}.
+     * @hide
+     */
+    public static final String EXTRA_USERID =
+            "android.intent.extra.user_id";
     // ---------------------------------------------------------------------
     // ---------------------------------------------------------------------
     // Intent flags (see mFlags variable).

core/java/android/content/SyncManager.java

@@ -326,6 +326,13 @@ public void onReceive(Context context, Intent intent) {
         }
     };
 
+    private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            onUserRemoved(intent);
+        }
+    };
+
     private static final String ACTION_SYNC_ALARM = "android.content.syncmanager.SYNC_ALARM";
     private final SyncHandler mSyncHandler;
 
@@ -420,6 +427,10 @@ public void onServiceChanged(SyncAdapterType type, boolean removed) {
         intentFilter.setPriority(100);
         context.registerReceiver(mShutdownIntentReceiver, intentFilter);
 
+        intentFilter = new IntentFilter();
+        intentFilter.addAction(Intent.ACTION_USER_REMOVED);
+        mContext.registerReceiver(mUserIntentReceiver, intentFilter);
+
         if (!factoryTest) {
             mNotificationMgr = (NotificationManager)
                 context.getSystemService(Context.NOTIFICATION_SERVICE);
@@ -905,6 +916,18 @@ void maybeRescheduleSync(SyncResult syncResult, SyncOperation operation) {
         }
     }
 
+    private void onUserRemoved(Intent intent) {
+        int userId = intent.getIntExtra(Intent.EXTRA_USERID, -1);
+        if (userId == -1) return;
+
+        // Clean up the storage engine database
+        mSyncStorageEngine.doDatabaseCleanup(new Account[0], userId);
+        onAccountsUpdated(null);
+        synchronized (mSyncQueue) {
+            mSyncQueue.removeUser(userId);
+        }
+    }
+
     /**
      * @hide
      */

core/java/android/content/SyncQueue.java

@@ -117,6 +117,19 @@ private boolean add(SyncOperation operation,
         return true;
     }
 
+    public void removeUser(int userId) {
+        ArrayList<SyncOperation> opsToRemove = new ArrayList<SyncOperation>();
+        for (SyncOperation op : mOperationsMap.values()) {
+            if (op.userId == userId) {
+                opsToRemove.add(op);
+            }
+        }
+
+        for (SyncOperation op : opsToRemove) {
+            remove(op);
+        }
+    }
+
     /**
      * Remove the specified operation if it is in the queue.
      * @param operation the operation to remove

core/java/android/content/pm/IPackageManager.aidl

@@ -358,6 +358,7 @@ interface IPackageManager {
 
     UserInfo createUser(in String name, int flags);
     boolean removeUser(int userId);
+    void updateUserName(int userId, String name);
 
     void installPackageWithVerification(in Uri packageURI, in IPackageInstallObserver observer,
             int flags, in String installerPackageName, in Uri verificationURI,
@@ -370,6 +371,7 @@ interface IPackageManager {
     boolean isFirstBoot();
 
     List<UserInfo> getUsers();
+    UserInfo getUser(int userId);
 
     void setPermissionEnforcement(String permission, int enforcement);
     int getPermissionEnforcement(String permission);

core/java/android/content/pm/PackageManager.java

@@ -2153,7 +2153,8 @@ public PackageInfo getPackageArchiveInfo(String archiveFilePath, int flags) {
         if ((flags & GET_SIGNATURES) != 0) {
             packageParser.collectCertificates(pkg, 0);
         }
-        return PackageParser.generatePackageInfo(pkg, null, flags, 0, 0, null);
+        return PackageParser.generatePackageInfo(pkg, null, flags, 0, 0, null, false,
+                COMPONENT_ENABLED_STATE_DEFAULT);
     }
 
     /**
@@ -2637,10 +2638,17 @@ public abstract void movePackage(
     public abstract void updateUserFlags(int id, int flags);
 
     /**
-     * Returns the device identity that verifiers can use to associate their
-     * scheme to a particular device. This should not be used by anything other
-     * than a package verifier.
-     *
+     * Returns the details for the user specified by userId.
+     * @param userId the user id of the user
+     * @return UserInfo for the specified user, or null if no such user exists.
+     * @hide
+     */
+    public abstract UserInfo getUser(int userId);
+
+    /**
+     * Returns the device identity that verifiers can use to associate their scheme to a particular
+     * device. This should not be used by anything other than a package verifier.
+     * 
      * @return identity that uniquely identifies current device
      * @hide
      */