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.web.tags;
020
021import org.apache.shiro.subject.Subject;
022
023
024/**
025 * Displays body content if the current user has any of the roles specified.
026 *
027 * @since 0.2
028 */
029public class HasAnyRolesTag extends RoleTag {
030
031    //TODO - complete JavaDoc
032
033    // Delimeter that separates role names in tag attribute
034    private static final String ROLE_NAMES_DELIMETER = ",";
035
036    public HasAnyRolesTag() {
037    }
038
039    protected boolean showTagBody(String roleNames) {
040        boolean hasAnyRole = false;
041
042        Subject subject = getSubject();
043
044        if (subject != null) {
045
046            // Iterate through roles and check to see if the user has one of the roles
047            for (String role : roleNames.split(ROLE_NAMES_DELIMETER)) {
048
049                if (subject.hasRole(role.trim())) {
050                    hasAnyRole = true;
051                    break;
052                }
053
054            }
055
056        }
057
058        return hasAnyRole;
059    }
060
061}