| 1 | /* AccessController.java --- Access control context and permission checker
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| 2 | Copyright (C) 2001 Free Software Foundation, Inc.
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| 3 |
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| 4 | This file is part of GNU Classpath.
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| 5 |
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| 6 | GNU Classpath is free software; you can redistribute it and/or modify
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| 7 | it under the terms of the GNU General Public License as published by
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| 8 | the Free Software Foundation; either version 2, or (at your option)
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| 9 | any later version.
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| 10 |
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| 11 | GNU Classpath is distributed in the hope that it will be useful, but
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| 12 | WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 14 | General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License
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| 17 | along with GNU Classpath; see the file COPYING. If not, write to the
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| 18 | Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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| 19 | 02111-1307 USA.
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| 20 |
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| 21 | Linking this library statically or dynamically with other modules is
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| 22 | making a combined work based on this library. Thus, the terms and
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| 23 | conditions of the GNU General Public License cover the whole
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| 24 | combination.
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| 25 |
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| 26 | As a special exception, the copyright holders of this library give you
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| 27 | permission to link this library with independent modules to produce an
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| 28 | executable, regardless of the license terms of these independent
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| 29 | modules, and to copy and distribute the resulting executable under
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| 30 | terms of your choice, provided that you also meet, for each linked
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| 31 | independent module, the terms and conditions of the license of that
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| 32 | module. An independent module is a module which is not derived from
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| 33 | or based on this library. If you modify this library, you may extend
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| 34 | this exception to your version of the library, but you are not
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| 35 | obligated to do so. If you do not wish to do so, delete this
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| 36 | exception statement from your version. */
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| 37 |
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| 38 | package java.security;
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| 39 |
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| 40 | /**
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| 41 | * Access control context and permission checker.
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| 42 | * Can check permissions in the access control context of the current thread
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| 43 | * through the <code>checkPermission()</code> method.
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| 44 | * Manipulates the access control context for code that needs to be executed
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| 45 | * the protection domain of the calling class (by explicitly ignoring the
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| 46 | * context of the calling code) in the <code>doPrivileged()</code> methods.
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| 47 | * And provides a <code>getContext()</code> method which gives the access
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| 48 | * control context of the current thread that can be used for checking
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| 49 | * permissions at a later time and/or in another thread.
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| 50 | * <p>
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| 51 | * XXX - Mostly a stub implementation at the moment. Needs native support
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| 52 | * from the VM to function correctly. XXX - Do not forget to think about
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| 53 | * how to handle <code>java.lang.reflect.Method.invoke()</code> on the
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| 54 | * <code>doPrivileged()</code> methods.
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| 55 | *
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| 56 | * @author Mark Wielaard ([email protected])
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| 57 | * @since 1.2
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| 58 | */
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