/* * Copyright (c) 2001, 2003, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.sun.jmx.snmp;  // java import//import java.util.Enumeration;import java.net.InetAddress; /** * Defines the user based ACL used by the SNMP protocol adaptor. * <p> * <p><b>This API is a Sun Microsystems internal API  and is subject * to change without notice.</b></p> * @since 1.5 */ public interface UserAcl {     /**     * Returns the name of the ACL.     *     * @return The name of the ACL.     */    public String getName();     /**     * Checks whether or not the specified user has <CODE>READ</CODE> access.     *     * @param user The user name to check.     *     * @return <CODE>true</CODE> if the host has read permission, <CODE>false</CODE> otherwise.     */    public boolean checkReadPermission(String user);     /**     * Checks whether or not the specified user and context name have <CODE>READ</CODE> access.     *     * @param user The user name to check.     * @param contextName The context name associated with the user.     * @param securityLevel The request security level.     * @return <CODE>true</CODE> if the pair (user, context) has read permission, <CODE>false</CODE> otherwise.     */    public boolean checkReadPermission(String user, String contextName, int securityLevel);     /**     * Checks whether or not a context name is defined.     *     * @param contextName The context name to check.     *     * @return <CODE>true</CODE> if the context is known, <CODE>false</CODE> otherwise.     */    public boolean checkContextName(String contextName);     /**     * Checks whether or not the specified user has <CODE>WRITE</CODE> access.     *     * @param user The user to check.     *     * @return <CODE>true</CODE> if the user has write permission, <CODE>false</CODE> otherwise.     */    public boolean checkWritePermission(String user);     /**     * Checks whether or not the specified user and context name have <CODE>WRITE</CODE> access.     *     * @param user The user name to check.     * @param contextName The context name associated with the user.     * @param securityLevel The request security level.     * @return <CODE>true</CODE> if the pair (user, context) has write permission, <CODE>false</CODE> otherwise.     */    public boolean checkWritePermission(String user, String contextName, int securityLevel);}