| /* |
| * 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.apache.commons.beanutils.PropertyUtils; |
| import org.jsecurity.aop.MethodInvocation; |
| import org.jsecurity.authz.AuthorizationException; |
| import org.jsecurity.authz.UnauthorizedException; |
| import org.jsecurity.authz.annotation.RequiresPermissions; |
| import org.jsecurity.subject.Subject; |
| import org.jsecurity.util.PermissionUtils; |
| |
| import java.util.Set; |
| |
| /** |
| * @author Les Hazlewood |
| * @since 0.9 |
| */ |
| public class PermissionAnnotationMethodInterceptor extends AuthorizingAnnotationMethodInterceptor { |
| |
| private static final char ARRAY_CLOSE_CHAR = ']'; |
| |
| public PermissionAnnotationMethodInterceptor() { |
| super(RequiresPermissions.class); |
| } |
| |
| 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(); |
| } |
| |
| protected Object[] getMethodArguments(MethodInvocation invocation) { |
| if (invocation != null) { |
| return invocation.getArguments(); |
| } else { |
| return null; |
| } |
| } |
| |
| protected String getAnnotationValue(MethodInvocation invocation) { |
| RequiresPermissions prAnnotation = (RequiresPermissions) getAnnotation(invocation); |
| return prAnnotation.value(); |
| } |
| |
| public void assertAuthorized(MethodInvocation mi) throws AuthorizationException { |
| String p = getAnnotationValue(mi); |
| Set<String> perms = PermissionUtils.toPermissionStrings(p); |
| |
| Subject subject = getSubject(); |
| |
| if (perms.size() == 1) { |
| if (!subject.isPermitted(perms.iterator().next())) { |
| String msg = "Calling Subject does not have required permission [" + p + "]. " + |
| "Method invocation denied."; |
| throw new UnauthorizedException(msg); |
| } |
| } else { |
| String[] permStrings = new String[perms.size()]; |
| permStrings = perms.toArray(permStrings); |
| if (!subject.isPermittedAll(permStrings)) { |
| String msg = "Calling Subject does not have required permissions [" + p + "]. " + |
| "Method invocation denied."; |
| throw new UnauthorizedException(msg); |
| } |
| |
| } |
| } |
| |
| |
| } |