/*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you under the Apache License, Version 2.0 (the

  * "License"); you may not use this file except in compliance

  * with the License.  You may obtain a copy of the License at

  *

  *     http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing,

  * software distributed under the License is distributed on an

  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

  * KIND, either express or implied.  See the License for the

  * specific language governing permissions and limitations

  * under the License.

  */

 package org.apache.shiro.web.filter.authz;

 import java.io.IOException;

 import java.util.Set;

 import javax.servlet.ServletRequest;

 import javax.servlet.ServletResponse;

 import org.apache.shiro.subject.Subject;

 import org.apache.shiro.util.CollectionUtils;

 /**

  * Filter that allows access if the current user has the roles specified by the mapped value, or denies access

  * if the user does not have all of the roles specified.

  *

  * @since 0.9

  */

 public class RolesAuthorizationFilter extends AuthorizationFilter {

     //TODO - complete JavaDoc

     @SuppressWarnings({"unchecked"})

     public boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) throws IOException {

         Subject subject = getSubject(request, response);

         String[] rolesArray = (String[]) mappedValue;

         if (rolesArray == null || rolesArray.length == 0) {

             //no roles specified, so nothing to check - allow access.

             return true;

         }

         Set<String> roles = CollectionUtils.asSet(rolesArray);

         return subject.hasAllRoles(roles);

     }

 }