001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.shiro.authz.aop;
020
021import javax.annotation.security.PermitAll;
022import java.lang.annotation.Annotation;
023
024/**
025 * This {@link org.apache.shiro.aop.AnnotationHandler AnnotationHandler} allows access from any subject
026 * (anonymous or logged in user).  It is largely a no-op or for documentation. However, this annotation WILL override
027 * a {@link javax.annotation.security.DenyAll DenyAll} or {@link javax.annotation.security.RolesAllowed RolesAllowed}
028 * annotation if those annotations are placed at the class level and {@link PermitAll} is placed on a method.
029 *
030 * @since 2.0
031 */
032public class PermitAllAnnotationHandler extends AuthorizingAnnotationHandler {
033    /**
034     * Default no-argument constructor that ensures this interceptor looks for a {@link PermitAll}
035     * annotation in a method declaration.
036     */
037    public PermitAllAnnotationHandler() {
038        super(PermitAll.class);
039    }
040
041    /**
042     * No-op, the {@link PermitAll} annotation allows all subjects (including guests/anonymous).
043     *
044     * @param a the annotation to check for one or more roles
045     */
046    @Override
047    public void assertAuthorized(Annotation a) {
048    }
049}