| /* AudioSecurityManager.java -- Manages Security requests for Sound classes. |
| |
| Copyright (C) 2007 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| package gnu.javax.sound; |
| |
| import javax.sound.sampled.AudioPermission; |
| |
| /** |
| * This class handles security requests for classes in the Sound API. |
| * |
| * A class that needs to check against a particular permission type may use this |
| * class to query the <code>SecurityManager</code>. |
| * |
| * For example, to check for a read permission, a class can simply pass the |
| * <code>Permission.READ</code> constant to |
| * {@link #checkPermissions(gnu.javax.sound.AudioSecurityManager.Permission))}, |
| * like the following code demonstrates: |
| * |
| * <pre> |
| * AudioSecurityManager.checkPermissions(Permission.PLAY); |
| * </pre> |
| * |
| * If there is need to query for all the defined permissions type, the constant |
| * <code>Permission.ALL</code> can be used. In alternative, the |
| * {@link #checkPermissions()} is presented as a shorthand. |
| * |
| * @author Mario Torre <neugens@limasoftware.net> |
| */ |
| public class AudioSecurityManager |
| { |
| /** |
| * Defines a common set of permission allowed by the specification. |
| */ |
| public static enum Permission |
| { |
| PLAY, RECORD, ALL |
| } |
| |
| /** |
| * Shorthand to <code>checkPermissions(Permission.ALL)</code>. |
| */ |
| public static final void checkPermissions() |
| { |
| checkPermissions(Permission.ALL); |
| } |
| |
| /** |
| * Query the <code>SecurityManager</code> agains the given |
| * <code>Permission</code>. |
| * |
| * @param permission |
| */ |
| public static final void checkPermissions(Permission permission) |
| { |
| SecurityManager sm = System.getSecurityManager(); |
| if (sm != null) |
| { |
| String perm = null; |
| switch (permission) |
| { |
| case PLAY: |
| perm = "play"; |
| break; |
| |
| case RECORD: |
| perm = "record"; |
| break; |
| |
| case ALL: default: |
| perm = "*"; |
| break; |
| } |
| |
| sm.checkPermission(new AudioPermission(perm)); |
| } |
| } |
| } |