1 /*
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  3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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  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 ModuleSetAccessibleTest
 27  * @modules java.base/java.lang:open
 28  *          java.base/jdk.internal.misc:+open
 29  * @run junit/othervm ModuleSetAccessibleTest
 30  * @summary Test java.lang.reflect.AccessibleObject with modules
 31  */
 32 
 33 import java.lang.reflect.AccessibleObject;
 34 import java.lang.reflect.Constructor;
 35 import java.lang.reflect.Field;
 36 import java.lang.reflect.InaccessibleObjectException;
 37 import java.lang.reflect.InvocationTargetException;
 38 import java.lang.reflect.Method;
 39 import java.security.ProtectionDomain;
 40 
 41 import jdk.internal.misc.Unsafe;
 42 
 43 import static org.junit.jupiter.api.Assertions.*;
 44 import org.junit.jupiter.api.Test;
 45 
 46 public class ModuleSetAccessibleTest {
 47 
 48     /**
 49      * Invoke a private constructor on a public class in an exported package
 50      */
 51     @Test
 52     public void testPrivateConstructorInExportedPackage() throws Exception {
 53         Constructor<?> ctor = Unsafe.class.getDeclaredConstructor();
 54 
 55         assertThrows(IllegalAccessException.class, () -> ctor.newInstance());
 56 
 57         ctor.setAccessible(true);
 58         Unsafe unsafe = (Unsafe) ctor.newInstance();
 59     }
 60 
 61 
 62     /**
 63      * Invoke a private method on a public class in an exported package
 64      */
 65     @Test
 66     public void testPrivateMethodInExportedPackage() throws Exception {
 67         Method m = Unsafe.class.getDeclaredMethod("throwIllegalAccessError");
 68         assertThrows(IllegalAccessException.class, () -> m.invoke(null));
 69 
 70         m.setAccessible(true);
 71         InvocationTargetException e = assertThrows(InvocationTargetException.class, () ->
 72                 m.invoke(null));
 73         // thrown by throwIllegalAccessError
 74         assertInstanceOf(IllegalAccessError.class, e.getCause());
 75     }
 76 
 77 
 78     /**
 79      * Access a private field in a public class that is an exported package
 80      */
 81     @Test
 82     public void testPrivateFieldInExportedPackage() throws Exception {
 83         Field f = Unsafe.class.getDeclaredField("theUnsafe");
 84         assertThrows(IllegalAccessException.class, () -> f.get(null));
 85 
 86         f.setAccessible(true);
 87         Unsafe unsafe = (Unsafe) f.get(null);
 88     }
 89 
 90 
 91     /**
 92      * Invoke a public constructor on a public class in a non-exported package
 93      */
 94     @Test
 95     public void testPublicConstructorInNonExportedPackage() throws Exception {
 96         Class<?> clazz = Class.forName("sun.security.x509.X500Name");
 97         Constructor<?> ctor = clazz.getConstructor(String.class);
 98 
 99         assertThrows(IllegalAccessException.class, () -> ctor.newInstance("cn=duke"));
100 
101         assertThrows(InaccessibleObjectException.class, () -> ctor.setAccessible(true));
102 
103         ctor.setAccessible(false); // should succeed
104     }
105 
106 
107     /**
108      * Access a public field in a public class that in a non-exported package
109      */
110     @Test
111     public void testPublicFieldInNonExportedPackage() throws Exception {
112         Class<?> clazz = Class.forName("sun.security.x509.X500Name");
113         Field f = clazz.getField("SERIALNUMBER_OID");
114 
115         assertThrows(IllegalAccessException.class, () -> f.get(null));
116 
117         assertThrows(InaccessibleObjectException.class, () -> f.setAccessible(true));
118 
119         f.setAccessible(false); // should succeed
120     }
121 
122 
123     /**
124      * Test that the Class constructor cannot be make accessible.
125      */
126     @Test
127     public void testJavaLangClass() throws Exception {
128 
129         // non-public constructor
130         Constructor<?> ctor
131             = Class.class.getDeclaredConstructor(ClassLoader.class, Class.class, char.class,
132                                                  ProtectionDomain.class, boolean.class, boolean.class, char.class);
133         AccessibleObject[] ctors = { ctor };
134 
135         assertThrows(SecurityException.class, () -> ctor.setAccessible(true));
136         assertThrows(SecurityException.class, () -> AccessibleObject.setAccessible(ctors, true));
137 
138         // should succeed
139         ctor.setAccessible(false);
140         AccessibleObject.setAccessible(ctors, false);
141 
142     }
143 
144 }