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