1 /* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
2 *
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 package org.acegisecurity.intercept.method.aopalliance;
17
18 import org.acegisecurity.intercept.AbstractSecurityInterceptor;
19 import org.acegisecurity.intercept.InterceptorStatusToken;
20 import org.acegisecurity.intercept.ObjectDefinitionSource;
21 import org.acegisecurity.intercept.method.MethodDefinitionSource;
22
23 import org.aopalliance.intercept.MethodInterceptor;
24 import org.aopalliance.intercept.MethodInvocation;
25
26
27 /**
28 * Provides security interception of AOP Alliance based method invocations.<p>The
29 * <code>ObjectDefinitionSource</code> required by this security interceptor is of type {@link
30 * MethodDefinitionSource}. This is shared with the AspectJ based security interceptor
31 * (<code>AspectJSecurityInterceptor</code>), since both work with Java <code>Method</code>s.</p>
32 * <P>Refer to {@link AbstractSecurityInterceptor} for details on the workflow.</p>
33 *
34 * @author Ben Alex
35 * @version $Id: MethodSecurityInterceptor.java 1496 2006-05-23 13:38:33Z benalex $
36 */
37 public class MethodSecurityInterceptor extends AbstractSecurityInterceptor implements MethodInterceptor {
38 //~ Instance fields ================================================================================================
39
40 private MethodDefinitionSource objectDefinitionSource;
41
42 //~ Methods ========================================================================================================
43
44 public MethodDefinitionSource getObjectDefinitionSource() {
45 return this.objectDefinitionSource;
46 }
47
48 public Class getSecureObjectClass() {
49 return MethodInvocation.class;
50 }
51
52 /**
53 * This method should be used to enforce security on a <code>MethodInvocation</code>.
54 *
55 * @param mi The method being invoked which requires a security decision
56 *
57 * @return The returned value from the method invocation
58 *
59 * @throws Throwable if any error occurs
60 */
61 public Object invoke(MethodInvocation mi) throws Throwable {
62 Object result = null;
63 InterceptorStatusToken token = super.beforeInvocation(mi);
64
65 try {
66 result = mi.proceed();
67 } finally {
68 result = super.afterInvocation(token, result);
69 }
70
71 return result;
72 }
73
74 public ObjectDefinitionSource obtainObjectDefinitionSource() {
75 return this.objectDefinitionSource;
76 }
77
78 public void setObjectDefinitionSource(MethodDefinitionSource newSource) {
79 this.objectDefinitionSource = newSource;
80 }
81 }