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.filter.authz;
020    
021    import java.io.IOException;
022    import java.util.Set;
023    import javax.servlet.ServletRequest;
024    import javax.servlet.ServletResponse;
025    
026    import org.apache.shiro.subject.Subject;
027    import org.apache.shiro.util.CollectionUtils;
028    
029    
030    /**
031     * Filter that allows access if the current user has the roles specified by the mapped value, or denies access
032     * if the user does not have all of the roles specified.
033     *
034     * @since 0.9
035     */
036    public class RolesAuthorizationFilter extends AuthorizationFilter {
037    
038        //TODO - complete JavaDoc
039    
040        @SuppressWarnings({"unchecked"})
041        public boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) throws IOException {
042    
043            Subject subject = getSubject(request, response);
044            String[] rolesArray = (String[]) mappedValue;
045    
046            if (rolesArray == null || rolesArray.length == 0) {
047                //no roles specified, so nothing to check - allow access.
048                return true;
049            }
050    
051            Set<String> roles = CollectionUtils.asSet(rolesArray);
052            return subject.hasAllRoles(roles);
053        }
054    
055    }