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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.shiro.web.filter.authz;
20  
21  import java.io.IOException;
22  import java.util.Set;
23  import javax.servlet.ServletRequest;
24  import javax.servlet.ServletResponse;
25  
26  import org.apache.shiro.subject.Subject;
27  import org.apache.shiro.util.CollectionUtils;
28  
29  
30  /**
31   * Filter that allows access if the current user has the roles specified by the mapped value, or denies access
32   * if the user does not have all of the roles specified.
33   *
34   * @since 0.9
35   */
36  public class RolesAuthorizationFilter extends AuthorizationFilter {
37  
38      //TODO - complete JavaDoc
39  
40      @SuppressWarnings({"unchecked"})
41      public boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) throws IOException {
42  
43          Subject subject = getSubject(request, response);
44          String[] rolesArray = (String[]) mappedValue;
45  
46          if (rolesArray == null || rolesArray.length == 0) {
47              //no roles specified, so nothing to check - allow access.
48              return true;
49          }
50  
51          Set<String> roles = CollectionUtils.asSet(rolesArray);
52          return subject.hasAllRoles(roles);
53      }
54  
55  }