01: /* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
02: *
03: * Licensed under the Apache License, Version 2.0 (the "License");
04: * you may not use this file except in compliance with the License.
05: * You may obtain a copy of the License at
06: *
07: * http://www.apache.org/licenses/LICENSE-2.0
08: *
09: * 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.aspectj;
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.aspectj.lang.JoinPoint;
24:
25: /**
26: * Provides security interception of AspectJ method invocations.<p>The <code>ObjectDefinitionSource</code> required
27: * by this security interceptor is of type {@link MethodDefinitionSource}. This is shared with the AOP Alliance based
28: * security interceptor (<code>MethodSecurityInterceptor</code>), since both work with Java <code>Method</code>s.</p>
29: * <p>The secure object type is <code>org.aspectj.lang.JoinPoint</code>, which is passed from the relevant
30: * <code>around()</code> advice. The <code>around()</code> advice also passes an anonymous implementation of {@link
31: * AspectJCallback} which contains the call for AspectJ to continue processing: <code>return proceed();</code>.</p>
32: * <P>Refer to {@link AbstractSecurityInterceptor} for details on the workflow.</p>
33: *
34: * @author Ben Alex
35: * @version $Id: AspectJSecurityInterceptor.java 1496 2006-05-23 13:38:33Z benalex $
36: */
37: public class AspectJSecurityInterceptor extends
38: AbstractSecurityInterceptor {
39: //~ Instance fields ================================================================================================
40:
41: private MethodDefinitionSource objectDefinitionSource;
42:
43: //~ Methods ========================================================================================================
44:
45: public MethodDefinitionSource getObjectDefinitionSource() {
46: return this .objectDefinitionSource;
47: }
48:
49: public Class getSecureObjectClass() {
50: return JoinPoint.class;
51: }
52:
53: /**
54: * This method should be used to enforce security on a <code>JoinPoint</code>.
55: *
56: * @param jp The AspectJ joint point being invoked which requires a security decision
57: * @param advisorProceed the advice-defined anonymous class that implements <code>AspectJCallback</code> containing
58: * a simple <code>return proceed();</code> statement
59: *
60: * @return The returned value from the method invocation
61: */
62: public Object invoke(JoinPoint jp, AspectJCallback advisorProceed) {
63: Object result = null;
64: InterceptorStatusToken token = super .beforeInvocation(jp);
65:
66: try {
67: result = advisorProceed.proceedWithObject();
68: } finally {
69: result = super .afterInvocation(token, result);
70: }
71:
72: return result;
73: }
74:
75: public ObjectDefinitionSource obtainObjectDefinitionSource() {
76: return this .objectDefinitionSource;
77: }
78:
79: public void setObjectDefinitionSource(
80: MethodDefinitionSource newSource) {
81: this.objectDefinitionSource = newSource;
82: }
83: }
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