001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     *
010     *     http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing,
013     * software distributed under the License is distributed on an
014     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     * KIND, either express or implied.  See the License for the
016     * specific language governing permissions and limitations
017     * under the License.
018     */
019    package org.apache.shiro.aspectj;
020    
021    import org.apache.shiro.aop.MethodInvocation;
022    import org.apache.shiro.authz.aop.AnnotationsAuthorizingMethodInterceptor;
023    import org.aspectj.lang.JoinPoint;
024    import org.aspectj.lang.reflect.MethodSignature;
025    import org.slf4j.Logger;
026    import org.slf4j.LoggerFactory;
027    
028    import java.util.Arrays;
029    
030    /**
031     * Extends the annotations authorizing method interceptor class hierarchie to adapt
032     * an aspectj {@link JoinPoint} into a {@link MethodInvocation} amd to perform the
033     * authorization of method invocations.
034     *
035     * @since 1.0
036     */
037    public class AspectjAnnotationsAuthorizingMethodInterceptor extends AnnotationsAuthorizingMethodInterceptor {
038        /**
039         * This class's private log instance.
040         */
041        private static final Logger log = LoggerFactory.getLogger(AspectjAnnotationsAuthorizingMethodInterceptor.class);
042    
043        /**
044         * Performs the method interception of the before advice at the specified joint point.
045         *
046         * @param aJoinPoint The joint point to intercept.
047         * @throws Throwable If an error occurs berforming the method invocation.
048         */
049        protected void performBeforeInterception(JoinPoint aJoinPoint) throws Throwable {
050            if (log.isTraceEnabled()) log.trace("#### Invoking a method decorated with a Shiro annotation" +
051                    "\n\tkind       : " + aJoinPoint.getKind() +
052                    "\n\tjoinPoint  : " + aJoinPoint +
053                    "\n\tannotations: " + Arrays.toString(((MethodSignature) aJoinPoint.getSignature()).getMethod().getAnnotations()) +
054                    "\n\ttarget     : " + aJoinPoint.getTarget()
055            );
056    
057            // 1. Adapt the join point into a method invocation
058            BeforeAdviceMethodInvocationAdapter mi = BeforeAdviceMethodInvocationAdapter.createFrom(aJoinPoint);
059    
060            // 2. Delegate the authorization of the method call to the super class
061            super.invoke(mi);
062        }
063    }