96 lines
4.1 KiB
Java
96 lines
4.1 KiB
Java
/* 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., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 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
|
|
*/
|
|
public abstract 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
|
|
*/
|
|
public abstract 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
|
|
*/
|
|
public abstract boolean isOwner(Principal owner);
|
|
}
|