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| 1 | /* | ||
| 2 | * Copyright (c) 1996, 1997, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package java.security.acl; | ||
| 27 | |||
| 28 | import java.security.Principal; | ||
| 29 | |||
| 30 | /** | ||
| 31 | * Interface for managing owners of Access Control Lists (ACLs) or ACL | ||
| 32 | * configurations. (Note that the Acl interface in the | ||
| 33 | * <code> java.security.acl </code> package extends this Owner | ||
| 34 | * interface.) The initial owner Principal should be specified as an | ||
| 35 | * argument to the constructor of the class implementing this interface. | ||
| 36 | * | ||
| 37 | * @see java.security.acl.Acl | ||
| 38 | * | ||
| 39 | */ | ||
| 40 | public interface Owner { | ||
| 41 | |||
| 42 | /** | ||
| 43 | * Adds an owner. Only owners can modify ACL contents. The caller | ||
| 44 | * principal must be an owner of the ACL in order to invoke this method. | ||
| 45 | * That is, only an owner can add another owner. The initial owner is | ||
| 46 | * configured at ACL construction time. | ||
| 47 | * | ||
| 48 | * @param caller the principal invoking this method. It must be an owner | ||
| 49 | * of the ACL. | ||
| 50 | * | ||
| 51 | * @param owner the owner that should be added to the list of owners. | ||
| 52 | * | ||
| 53 | * @return true if successful, false if owner is already an owner. | ||
| 54 | * @exception NotOwnerException if the caller principal is not an owner | ||
| 55 | * of the ACL. | ||
| 56 | */ | ||
| 57 | public boolean addOwner(Principal caller, Principal owner) | ||
| 58 | throws NotOwnerException; | ||
| 59 | |||
| 60 | /** | ||
| 61 | * Deletes an owner. If this is the last owner in the ACL, an exception is | ||
| 62 | * raised.<p> | ||
| 63 | * | ||
| 64 | * The caller principal must be an owner of the ACL in order to invoke | ||
| 65 | * this method. | ||
| 66 | * | ||
| 67 | * @param caller the principal invoking this method. It must be an owner | ||
| 68 | * of the ACL. | ||
| 69 | * | ||
| 70 | * @param owner the owner to be removed from the list of owners. | ||
| 71 | * | ||
| 72 | * @return true if the owner is removed, false if the owner is not part | ||
| 73 | * of the list of owners. | ||
| 74 | * | ||
| 75 | * @exception NotOwnerException if the caller principal is not an owner | ||
| 76 | * of the ACL. | ||
| 77 | * | ||
| 78 | * @exception LastOwnerException if there is only one owner left, so that | ||
| 79 | * deleteOwner would leave the ACL owner-less. | ||
| 80 | */ | ||
| 81 | public boolean deleteOwner(Principal caller, Principal owner) | ||
| 82 | throws NotOwnerException, LastOwnerException; | ||
| 83 | |||
| 84 | /** | ||
| 85 | * Returns true if the given principal is an owner of the ACL. | ||
| 86 | * | ||
| 87 | * @param owner the principal to be checked to determine whether or not | ||
| 88 | * it is an owner. | ||
| 89 | * | ||
| 90 | * @return true if the passed principal is in the list of owners, false | ||
| 91 | * if not. | ||
| 92 | */ | ||
| 93 | public boolean isOwner(Principal owner); | ||
| 94 | |||
| 95 | } | ||