1 /* 2 * Copyright (c) 2000, 2017, 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 /* 25 * @test 26 * @bug 4325590 27 * @library /lib/testlibrary 28 * @build JarUtils A B 29 * @run main SuperclassDataLossTest 30 * @summary Verify that superclass data is not lost when incoming superclass 31 * descriptor is matched with local class that is not a superclass of 32 * the deserialized instance's class. 33 */ 34 35 import java.io.ByteArrayInputStream; 36 import java.io.ByteArrayOutputStream; 37 import java.io.InputStream; 38 import java.io.IOException; 39 import java.io.ObjectInputStream; 40 import java.io.ObjectOutputStream; 41 import java.io.ObjectStreamClass; 42 import java.net.URL; 43 import java.net.URLClassLoader; 44 import java.net.MalformedURLException; 45 import java.nio.file.Files; 46 import java.nio.file.Path; 47 import java.nio.file.Paths; 48 import java.nio.file.StandardCopyOption; 49 50 class MixedSuperclassStream extends ObjectInputStream { 51 private boolean ldr12A; 52 private URLClassLoader ldr1; 53 private URLClassLoader ldr2; 54 55 MixedSuperclassStream(InputStream in, URLClassLoader ldr1, 56 URLClassLoader ldr2, boolean ldr1First) throws IOException { 57 super(in); 58 this.ldr1 = ldr1; 59 this.ldr2 = ldr2; 60 this.ldr12A = ldr12A; 61 } 62 63 protected Class resolveClass(ObjectStreamClass desc) 64 throws IOException, ClassNotFoundException 65 { 66 // resolve A's classdesc to class != B's superclass 67 String name = desc.getName(); 68 if (ldr12A) { 69 if (name.equals("A")) { 70 return Class.forName(name, true, ldr1); 71 } else if (name.equals("B")) { 72 return Class.forName(name, true, ldr2); 73 } 74 } else { 75 if (name.equals("B")) { 76 return Class.forName(name, true, ldr1); 77 } else if (name.equals("A")) { 78 return Class.forName(name, true, ldr2); 79 } 80 } 81 return super.resolveClass(desc); 82 } 83 } 84 85 public class SuperclassDataLossTest { 86 87 public static void main(String[] args) throws Exception { 88 try (URLClassLoader ldr1 = new URLClassLoader(new URL[] { new URL("file:cb1.jar") }); 89 URLClassLoader ldr2 = new URLClassLoader(new URL[] { new URL("file:cb2.jar") })) { 90 setup(); 91 92 Runnable a = (Runnable) Class.forName("B", true, ldr1).newInstance(); 93 a.run(); 94 95 ByteArrayOutputStream bout = new ByteArrayOutputStream(); 96 ObjectOutputStream oout = new ObjectOutputStream(bout); 97 oout.writeObject(a); 98 oout.close(); 99 100 test(bout, ldr1, ldr2, true); 101 test(bout, ldr1, ldr2, false); 102 } 103 } 104 105 private static void test(ByteArrayOutputStream bout, URLClassLoader ldr1, 106 URLClassLoader ldr2, boolean ldr12A) throws Exception { 107 ByteArrayInputStream bin = 108 new ByteArrayInputStream(bout.toByteArray()); 109 ObjectInputStream oin = new MixedSuperclassStream(bin, ldr1, ldr2, ldr12A); 110 Runnable a = (Runnable) oin.readObject(); 111 a.run(); 112 } 113 114 private static void setup() throws Exception { 115 Path classes = Paths.get(System.getProperty("test.classes", "")); 116 JarUtils.createJarFile(Paths.get("cb1.jar"), classes, 117 classes.resolve("A.class"), classes.resolve("B.class")); 118 Files.copy(Paths.get("cb1.jar"), Paths.get("cb2.jar"), 119 StandardCopyOption.REPLACE_EXISTING); 120 } 121 }