| /* Owner.java -- ACL owner |
| Copyright (C) 1998 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 java.security.acl; |
| |
| import java.security.Principal; |
| |
| /** |
| * This interface provides a mechanism for maintaining a list of owners |
| * of an access control list (ACL). Since a <code>Principal</code> must |
| * be an owner in order to modify the owner list, a mechanism must be |
| * provided to specify the initial owner of the ACL. The proper way to do |
| * this is for the implementing class to specify the initial owner in |
| * the contructor for that class. |
| * |
| * @version 0.0 |
| * |
| * @author Aaron M. Renn (arenn@urbanophile.com) |
| */ |
| public interface Owner |
| { |
| /** |
| * This method adds an owner to the access control list (ACL). Only a |
| * <code>Principal</code> who is already an owner can perform this operation. |
| * |
| * @param caller The <code>Principal</code> who is requesting that an owner be added |
| * @param owner The <code>Principal</code> to add as a new owner |
| * |
| * @param <code>true</code> if the new owner was successfully added or <code>false</code> if the specified new owner is already an owner |
| * |
| * @exception NotOwnerException If the caller is not already an owner of this ACL |
| */ |
| boolean addOwner(Principal caller, Principal owner) |
| throws NotOwnerException; |
| |
| /** |
| * This method delets an owner from the access control list (ACL). Only a |
| * <code>Principal</code> who is an owner can perform this operation. An |
| * owner can delete itself from the list. If there is only one |
| * owner remaining on this list, any attempt to delete it will throw an |
| * exception. |
| * |
| * @param caller The <code>Principal</code> who is requesting that an owner be deleted |
| * @param owner The <code>Principal</code> to delete as an owner |
| * |
| * @param <code>true</code> if the new owner was successfully deleted or <code>false</code> if the specified owner is not currently an owner |
| * |
| * @exception NotOwnerException If the caller is not already an owner of this ACL |
| * @exception LastOwnerException If completing the operation would delete the last ACL owner |
| */ |
| boolean deleteOwner(Principal caller, Principal owner) |
| throws NotOwnerException, LastOwnerException; |
| |
| /** |
| * This method tests whether or not a given <code>Principal</code> is an |
| * owner of this access control list (ACL). |
| * |
| * @return <code>true</code> if the <code>Principal</code> is an owner, <code>false</code> otherwise |
| */ |
| boolean isOwner(Principal owner); |
| } |