1 /* 2 * Copyright (c) 2015, 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 * @summary Verifies the behaviour of Unsafe.defineClass 27 * @library /testlibrary 28 * @modules java.base/sun.misc 29 * java.compiler 30 * java.management 31 * @run main DefineClass 32 */ 33 34 import java.security.ProtectionDomain; 35 import java.io.InputStream; 36 import jdk.test.lib.*; 37 import sun.misc.Unsafe; 38 import static jdk.test.lib.Asserts.*; 39 40 public class DefineClass { 41 public static void main(String args[]) throws Exception { 42 Unsafe unsafe = Utils.getUnsafe(); 43 TestClassLoader classloader = new TestClassLoader(); 44 ProtectionDomain pd = new ProtectionDomain(null, null); 45 46 byte klassbuf[] = InMemoryJavaCompiler.compile("TestClass", "class TestClass { }"); 47 48 // Invalid class data 49 try { 50 unsafe.defineClass(null, klassbuf, 4, klassbuf.length - 4, classloader, pd); 51 throw new RuntimeException("defineClass did not throw expected ClassFormatError"); 52 } catch (ClassFormatError e) { 53 // Expected 54 } 55 56 // Negative offset 57 try { 58 unsafe.defineClass(null, klassbuf, -1, klassbuf.length, classloader, pd); 59 throw new RuntimeException("defineClass did not throw expected IndexOutOfBoundsException"); 60 } catch (IndexOutOfBoundsException e) { 61 // Expected 62 } 63 64 // Negative length 65 try { 66 unsafe.defineClass(null, klassbuf, 0, -1, classloader, pd); 67 throw new RuntimeException("defineClass did not throw expected IndexOutOfBoundsException"); 68 } catch (IndexOutOfBoundsException e) { 69 // Expected 70 } 71 72 // Offset greater than klassbuf.length 73 try { 74 unsafe.defineClass(null, klassbuf, klassbuf.length + 1, klassbuf.length, classloader, pd); 75 throw new RuntimeException("defineClass did not throw expected IndexOutOfBoundsException"); 76 } catch (IndexOutOfBoundsException e) { 77 // Expected 78 } 79 80 // Length greater than klassbuf.length 81 try { 82 unsafe.defineClass(null, klassbuf, 0, klassbuf.length + 1, classloader, pd); 83 throw new RuntimeException("defineClass did not throw expected IndexOutOfBoundsException"); 84 } catch (IndexOutOfBoundsException e) { 85 // Expected 86 } 87 88 Class klass = unsafe.defineClass(null, klassbuf, 0, klassbuf.length, classloader, pd); 89 assertEquals(klass.getClassLoader(), classloader); 90 assertEquals(klass.getProtectionDomain(), pd); 91 } 92 93 private static class TestClassLoader extends ClassLoader { 94 public TestClassLoader(ClassLoader parent) { 95 super(parent); 96 } 97 98 public TestClassLoader() { 99 super(); 100 } 101 } 102 }