1 /* 2 * Copyright (c) 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 * @build CanAccessTest 27 * @modules java.base/jdk.internal.misc:+open 28 * @run testng/othervm --illegal-access=deny CanAccessTest 29 * @summary Test AccessibleObject::canAccess method 30 */ 31 32 import java.lang.reflect.Constructor; 33 import java.lang.reflect.Method; 34 import java.security.SecureClassLoader; 35 36 import jdk.internal.misc.Unsafe; 37 import org.testng.annotations.Test; 38 import static org.testng.Assert.*; 39 40 @Test 41 public class CanAccessTest { 42 private static Unsafe INSTANCE = Unsafe.getUnsafe(); 43 44 /** 45 * null object parameter for Constructor 46 */ 47 public void testConstructor() throws Exception { 48 Constructor<?> ctor = Unsafe.class.getDeclaredConstructor(); 49 assertFalse(ctor.canAccess(null)); 50 assertTrue(ctor.trySetAccessible()); 51 52 try { 53 // non-null object parameter 54 ctor.canAccess(INSTANCE); 55 assertTrue(false); 56 } catch (IllegalArgumentException expected) {} 57 } 58 59 /** 60 * Test protected constructors 61 */ 62 public void testProtectedConstructor() throws Exception { 63 TestLoader.testProtectedConstructorNonOpenedPackage(); 64 65 Constructor<?> ctor = TestLoader.class.getDeclaredConstructor(); 66 assertTrue(ctor.canAccess(null)); 67 } 68 69 /** 70 * null object parameter for static members 71 */ 72 public void testStaticMember() throws Exception { 73 Method m = Unsafe.class.getDeclaredMethod("throwIllegalAccessError"); 74 assertFalse(m.canAccess(null)); 75 assertTrue(m.trySetAccessible()); 76 77 try { 78 // non-null object parameter 79 m.canAccess(INSTANCE); 80 assertTrue(false); 81 } catch (IllegalArgumentException expected) { } 82 } 83 84 /** 85 * Test protected static 86 */ 87 public void testProtectedStatic() throws Exception { 88 Method m = TestLoader.testProtectedStatic(); 89 assertFalse(m.canAccess(null)); 90 } 91 92 /** 93 * the specified object must be an instance of the declaring class 94 * for instance members 95 */ 96 public void testInstanceMethod() throws Exception { 97 Method m = Unsafe.class.getDeclaredMethod("allocateMemory0", long.class); 98 assertFalse(m.canAccess(INSTANCE)); 99 100 try { 101 m.canAccess(null); 102 assertTrue(false); 103 } catch (IllegalArgumentException expected) { } 104 } 105 106 /** 107 * the specified object must be an instance of the declaring class 108 * for instance members 109 */ 110 public void testInvalidInstanceObject() throws Exception { 111 Class<?> clazz = Class.forName("sun.security.x509.X500Name"); 112 Method m = clazz.getDeclaredMethod("size"); 113 114 try { 115 m.canAccess(INSTANCE); 116 assertTrue(false); 117 } catch (IllegalArgumentException expected) { } 118 } 119 120 121 static class TestLoader extends SecureClassLoader { 122 public static Method testProtectedStatic() throws Exception { 123 Method m = ClassLoader.class.getDeclaredMethod("registerAsParallelCapable"); 124 assertTrue(m.canAccess(null)); 125 return m; 126 } 127 128 protected TestLoader() throws Exception { 129 Constructor<?> ctor = SecureClassLoader.class.getDeclaredConstructor(); 130 assertFalse(ctor.canAccess(null)); 131 assertFalse(ctor.trySetAccessible()); 132 } 133 134 public static void testProtectedConstructorNonOpenedPackage() throws Exception { 135 new TestLoader(); 136 } 137 } 138 }