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 */
019package org.apache.shiro.web.filter.authz;
020
021import java.io.IOException;
022import javax.servlet.ServletRequest;
023import javax.servlet.ServletResponse;
024
025import 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 */
033public 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}