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    
023    import javax.servlet.ServletRequest;
024    import javax.servlet.ServletResponse;
025    
026    import org.apache.shiro.subject.Subject;
027    
028    /**
029     * Filter that allows access if the current user has the permissions specified by the mapped value, or denies access
030     * if the user does not have all of the permissions specified.
031     *
032     * @since 0.4.0
033     */
034    public class PermissionsAuthorizationFilter extends AuthorizationFilter {
035    
036        //TODO - complete JavaDoc
037    
038        public boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) throws IOException {
039    
040            Subject subject = getSubject(request, response);
041            String[] perms = (String[]) mappedValue;
042    
043            boolean isPermitted = true;
044            if (perms != null && perms.length > 0) {
045                if (perms.length == 1) {
046                    if (!subject.isPermitted(perms[0])) {
047                        isPermitted = false;
048                    }
049                } else {
050                    if (!subject.isPermittedAll(perms)) {
051                        isPermitted = false;
052                    }
053                }
054            }
055    
056            return isPermitted;
057        }
058    }