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.authz.aop;
20
21 import java.lang.annotation.Annotation;
22
23 import org.apache.shiro.authz.UnauthenticatedException;
24 import org.apache.shiro.authz.annotation.RequiresAuthentication;
25
26
27 /**
28 * Handles {@link RequiresAuthentication RequiresAuthentication} annotations and ensures the calling subject is
29 * authenticated before allowing access.
30 *
31 * @since 0.9.0
32 */
33 public class AuthenticatedAnnotationHandler extends AuthorizingAnnotationHandler {
34
35 /**
36 * Default no-argument constructor that ensures this handler to process
37 * {@link org.apache.shiro.authz.annotation.RequiresAuthentication RequiresAuthentication} annotations.
38 */
39 public AuthenticatedAnnotationHandler() {
40 super(RequiresAuthentication.class);
41 }
42
43 /**
44 * Ensures that the calling <code>Subject</code> is authenticated, and if not, throws an
45 * {@link org.apache.shiro.authz.UnauthenticatedException UnauthenticatedException} indicating the method is not allowed to be executed.
46 *
47 * @param a the annotation to inspect
48 * @throws org.apache.shiro.authz.UnauthenticatedException if the calling <code>Subject</code> has not yet
49 * authenticated.
50 */
51 public void assertAuthorized(Annotation a) throws UnauthenticatedException {
52 if (a instanceof RequiresAuthentication && !getSubject().isAuthenticated() ) {
53 throw new UnauthenticatedException( "The current Subject is not authenticated. Access denied." );
54 }
55 }
56 }