| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.jsecurity.authz.aop; |
| |
| import org.jsecurity.authz.annotation.RequiresPermissions; |
| |
| /** |
| * Checks to see if a @{@link RequiresPermissions RequiresPermissions} annotation is declared, and if so, performs |
| * a permission check to see if the calling <code>Subject</code> is allowed to call the method. |
| * @author Les Hazlewood |
| * @since 0.9 |
| */ |
| public class PermissionAnnotationMethodInterceptor extends AuthorizingAnnotationMethodInterceptor { |
| |
| /* |
| * The character to look for that closes a permission definition. |
| **/ |
| //private static final char ARRAY_CLOSE_CHAR = ']'; |
| |
| /** |
| * Default no-argument constructor that ensures this interceptor looks for |
| * {@link RequiresPermissions RequiresPermissions} annotations in a method declaration. |
| */ |
| public PermissionAnnotationMethodInterceptor() { |
| super( new PermissionAnnotationHandler() ); |
| } |
| |
| /* |
| * Infers the permission from the specified name path in the annotation. |
| * @param methodArgs the <code>MethodInvocation</code> method arguments. |
| * @param namePath the Annotation 'name' value, which is a string-based permission definition. |
| * @return the String permission representation. |
| * @throws Exception if there is an error infering the target. |
| * |
| protected String inferTargetFromPath(Object[] methodArgs, String namePath) throws Exception { |
| int propertyStartIndex = -1; |
| |
| char[] chars = namePath.toCharArray(); |
| StringBuilder buf = new StringBuilder(); |
| //init iteration at index 1 (instead of 0). This is because the first |
| //character must be the ARRAY_OPEN_CHAR (eliminates unnecessary iteration) |
| for (int i = 1; i < chars.length; i++) { |
| if (chars[i] == ARRAY_CLOSE_CHAR) { |
| // skip the delimiting period after the ARRAY_CLOSE_CHAR. The resulting |
| // index is the init of the property path that we'll use with |
| // BeanUtils.getProperty: |
| propertyStartIndex = i + 2; |
| break; |
| } else { |
| buf.append(chars[i]); |
| } |
| } |
| |
| Integer methodArgIndex = Integer.parseInt(buf.toString()); |
| String beanUtilsPath = new String(chars, propertyStartIndex, |
| chars.length - propertyStartIndex); |
| Object targetValue = PropertyUtils.getProperty(methodArgs[methodArgIndex], beanUtilsPath); |
| return targetValue.toString(); |
| } |
| |
| /* |
| * Returns the <code>MethodInvocation</code>'s arguments, or <code>null</code> if there were none. |
| * @param invocation the methodInvocation to inspect. |
| * @return the method invocation's method arguments, or <code>null</code> if there were none. |
| * |
| protected Object[] getMethodArguments(MethodInvocation invocation) { |
| if (invocation != null) { |
| return invocation.getArguments(); |
| } else { |
| return null; |
| } |
| } |
| |
| /* |
| * Returns the annotation {@link RequiresPermissions#value value}, from which the Permission will be constructed. |
| * |
| * @param invocation the method being invoked. |
| * @return the method annotation's <code>value</code>, from which the Permission will be constructed. |
| * |
| protected String getAnnotationValue(MethodInvocation invocation) { |
| RequiresPermissions prAnnotation = (RequiresPermissions) getAnnotation(invocation); |
| return prAnnotation.value(); |
| } */ |
| } |