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 java.util.Set;
023import javax.servlet.ServletRequest;
024import javax.servlet.ServletResponse;
025
026import org.apache.shiro.subject.Subject;
027import 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 */
036public 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}