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.tynamo.security.shiro.authz;
020    
021    import java.io.IOException;
022    import java.util.Set;
023    
024    import javax.servlet.ServletRequest;
025    import javax.servlet.ServletResponse;
026    
027    import org.apache.shiro.subject.Subject;
028    import org.apache.shiro.util.CollectionUtils;
029    
030    
031    /**
032     * Filter that allows access if the current user has the roles specified by the mapped value, or denies access
033     * if the user does not have all of the roles specified.
034     *
035     * @since 0.4.0
036     */
037    public class RolesAuthorizationFilter extends AuthorizationFilter {
038    
039        //TODO - complete JavaDoc
040    
041        @SuppressWarnings({"unchecked"})
042        public boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) throws IOException {
043    
044            Subject subject = getSubject(request, response);
045            String[] rolesArray = (String[]) mappedValue;
046    
047            if (rolesArray == null || rolesArray.length == 0) {
048                //no roles specified, so nothing to check - allow access.
049                return true;
050            }
051    
052            Set<String> roles = CollectionUtils.asSet(rolesArray);
053            return subject.hasAllRoles(roles);
054        }
055    
056    }