| /* |
| * 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.codehaus.groovy.reflection; |
| |
| import groovy.lang.GroovyObject; |
| |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Modifier; |
| import java.lang.reflect.ReflectPermission; |
| import java.security.AccessControlException; |
| |
| final class AccessPermissionChecker { |
| |
| private static final ReflectPermission REFLECT_PERMISSION = new ReflectPermission("suppressAccessChecks"); |
| |
| private AccessPermissionChecker() { |
| } |
| |
| private static void checkAccessPermission(Class<?> declaringClass, final int modifiers, boolean isAccessible) { |
| final SecurityManager securityManager = System.getSecurityManager(); |
| if (securityManager != null && isAccessible) { |
| if (((modifiers & Modifier.PRIVATE) != 0 |
| || ((modifiers & (Modifier.PUBLIC | Modifier.PROTECTED)) == 0 |
| && packageCanNotBeAddedAnotherClass(declaringClass))) |
| && !GroovyObject.class.isAssignableFrom(declaringClass)) { |
| securityManager.checkPermission(REFLECT_PERMISSION); |
| } else if ((modifiers & (Modifier.PROTECTED)) != 0 && declaringClass.equals(ClassLoader.class)) { |
| securityManager.checkCreateClassLoader(); |
| } |
| } |
| } |
| |
| private static boolean packageCanNotBeAddedAnotherClass(Class<?> declaringClass) { |
| return declaringClass.getName().startsWith("java."); |
| } |
| |
| static void checkAccessPermission(Method method) { |
| try { |
| checkAccessPermission(method.getDeclaringClass(), method.getModifiers(), method.isAccessible()); |
| } catch (AccessControlException e) { |
| throw createCacheAccessControlExceptionOf(method, e); |
| } |
| } |
| |
| static void checkAccessPermission(Constructor constructor) { |
| try { |
| checkAccessPermission(constructor.getDeclaringClass(), constructor.getModifiers(), constructor.isAccessible()); |
| } catch (AccessControlException e) { |
| throw createCacheAccessControlExceptionOf(constructor, e); |
| } |
| } |
| |
| private static CacheAccessControlException createCacheAccessControlExceptionOf(Method method, AccessControlException e) { |
| return new CacheAccessControlException( |
| "Groovy object can not access method " + method.getName() |
| + " cacheAccessControlExceptionOf class " + method.getDeclaringClass().getName() |
| + " with modifiers \"" + Modifier.toString(method.getModifiers()) + "\"", e); |
| } |
| |
| private static CacheAccessControlException createCacheAccessControlExceptionOf(Constructor constructor, AccessControlException e) { |
| return new CacheAccessControlException( |
| "Groovy object can not access constructor " + constructor.getName() |
| + " cacheAccessControlExceptionOf class " + constructor.getDeclaringClass().getName() |
| + " with modifiers \"" + Modifier.toString(constructor.getModifiers()) + "\"", e); |
| } |
| |
| static void checkAccessPermission(Field field) { |
| try { |
| checkAccessPermission(field.getDeclaringClass(), field.getModifiers(), field.isAccessible()); |
| } catch (AccessControlException e) { |
| throw createCacheAccessControlExceptionOf(field, e); |
| } |
| } |
| |
| private static CacheAccessControlException createCacheAccessControlExceptionOf(Field field, AccessControlException e) { |
| return new CacheAccessControlException( |
| "Groovy object can not access field " + field.getName() |
| + " cacheAccessControlExceptionOf class " + field.getDeclaringClass().getName() |
| + " with modifiers \"" + Modifier.toString(field.getModifiers()) + "\"", e); |
| } |
| |
| } |