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     */
019    package org.apache.shiro.web.tags;
020    
021    import 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     */
029    public 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    }