1/* 2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* @test 25 * @bug 4258644 26 * @summary ObjectInputStream's default implementation of its protected 27 * resolveProxyClass method is specified to pass the first non-null class 28 * loader up the execution stack to the Proxy.getProxyClass method when 29 * it creates the specified proxy class; this test makes sure that it does 30 * that in situations where it hadn't in the past, such as if the defining 31 * loaders of the interfaces were all strict ancestors of the first 32 * non-null loader up the stack. 33 * @author Peter Jones 34 * 35 * @build ResolveProxyClass 36 * @run main ResolveProxyClass 37 */ 38 39import java.lang.reflect.*; 40import java.io.*; 41 42public class ResolveProxyClass { 43 44 /* 45 * This class is a dummy ObjectInputStream subclass that allows the 46 * test code to access ObjectInputStream's protected resolveProxyClass 47 * method directly. 48 */ 49 private static class TestObjectInputStream extends ObjectInputStream { 50 51 TestObjectInputStream() throws IOException { 52 super(); 53 } 54 55 protected Class resolveProxyClass(String[] interfaces) 56 throws IOException, ClassNotFoundException 57 { 58 return super.resolveProxyClass(interfaces); 59 } 60 } 61 62 public static void main(String[] args) { 63 64 System.err.println("\nRegression test for bug 4258644\n"); 65 66 try { 67 68 /* 69 * Set this thread's context class loader to null, so that the 70 * resolveProxyClass implementation cannot cheat by guessing that 71 * the context class loader is the appropriate loader to pass to 72 * the Proxy.getProxyClass method. 73 */ 74 Thread.currentThread().setContextClassLoader(null); 75 76 /* 77 * Expect the proxy class to be defined in the system class 78 * loader, because that is the defining loader of this test 79 * code, and it should be the first loader on the stack when 80 * ObjectInputStream.resolveProxyClass gets executed. 81 */ 82 ClassLoader expectedLoader = ResolveProxyClass.class.getClassLoader(); 83 84 TestObjectInputStream in = new TestObjectInputStream(); 85 Class proxyClass = in.resolveProxyClass( 86 new String[] { Runnable.class.getName() }); 87 ClassLoader proxyLoader = proxyClass.getClassLoader(); 88 System.err.println("proxy class \"" + proxyClass + 89 "\" defined in loader: " + proxyLoader); 90 91 if (proxyLoader != expectedLoader) { 92 throw new RuntimeException( 93 "proxy class defined in loader: " + proxyLoader); 94 } 95 96 System.err.println("\nTEST PASSED"); 97 98 } catch (Throwable e) { 99 System.err.println("\nTEST FAILED:"); 100 e.printStackTrace(); 101 throw new RuntimeException("TEST FAILED: " + e.toString()); 102 } 103 } 104} 105