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 javax.servlet.ServletRequest;
023    import javax.servlet.ServletResponse;
024    
025    import org.apache.shiro.subject.Subject;
026    
027    /**
028     * Filter that allows access if the current user has the permissions specified by the mapped value, or denies access
029     * if the user does not have all of the permissions specified.
030     *
031     * @since 0.9
032     */
033    public class PermissionsAuthorizationFilter extends AuthorizationFilter {
034    
035        //TODO - complete JavaDoc
036    
037        public boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) throws IOException {
038    
039            Subject subject = getSubject(request, response);
040            String[] perms = (String[]) mappedValue;
041    
042            boolean isPermitted = true;
043            if (perms != null && perms.length > 0) {
044                if (perms.length == 1) {
045                    if (!subject.isPermitted(perms[0])) {
046                        isPermitted = false;
047                    }
048                } else {
049                    if (!subject.isPermittedAll(perms)) {
050                        isPermitted = false;
051                    }
052                }
053            }
054    
055            return isPermitted;
056        }
057    }