| /* |
| * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package p1; |
| |
| import java.lang.invoke.MethodHandle; |
| import java.lang.invoke.MethodHandles; |
| import java.lang.invoke.MethodHandles.Lookup; |
| import java.lang.invoke.MethodType; |
| |
| import static java.lang.invoke.MethodHandles.Lookup.*; |
| |
| import org.testng.annotations.BeforeTest; |
| import org.testng.annotations.Test; |
| import static org.testng.Assert.*; |
| |
| /** |
| * Basic test case for module access checks and Lookup.in. |
| */ |
| |
| @Test |
| public class Main { |
| |
| private Class<?> p1_Type1; // m1, exported |
| private Class<?> p2_Type2; // m1, not exported |
| private Class<?> q1_Type1; // m2, exported |
| private Class<?> q2_Type2; // m2, not exported |
| private Class<?> x500NameClass; // java.base, not exported |
| private Class<?> unnamedClass; // class in unnamed module |
| |
| @BeforeTest |
| public void setup() throws Exception { |
| try { |
| p1_Type1 = Class.forName("p1.Type1"); |
| p2_Type2 = Class.forName("p2.Type2"); |
| q1_Type1 = Class.forName("q1.Type1"); |
| q2_Type2 = Class.forName("q2.Type2"); |
| x500NameClass = Class.forName("sun.security.x509.X500Name"); |
| unnamedClass = Class.forName("Unnamed"); |
| } catch (ClassNotFoundException e) { |
| throw new AssertionError(e); |
| } |
| |
| // check setup |
| Module m1 = ModuleLayer.boot().findModule("m1").orElse(null); |
| assertNotNull(m1); |
| assertTrue(p1_Type1.getModule() == m1); |
| assertTrue(p2_Type2.getModule() == m1); |
| assertTrue(m1.isExported("p1")); |
| assertFalse(m1.isExported("p2")); |
| |
| Module m2 = ModuleLayer.boot().findModule("m2").orElse(null); |
| assertNotNull(m2); |
| assertTrue(q1_Type1.getModule() == m2); |
| assertTrue(q2_Type2.getModule() == m2); |
| assertTrue(m2.isExported("q1")); |
| assertFalse(m2.isExported("q2")); |
| |
| Module unnamedModule = unnamedClass.getModule(); |
| assertFalse(unnamedModule.isNamed()); |
| |
| // m1 needs to read unnamed module |
| Main.class.getModule().addReads(unnamedModule); |
| } |
| |
| /** |
| * MethodHandles.lookup() |
| * |
| * [A0] has module access |
| * [A1] can access all public types in m1 |
| * [A2] can access public types in packages exported by modules that m1 reads |
| * [A3] cannot access public types in non-exported modules of modules that m1 reads |
| */ |
| public void testLookup() throws Exception { |
| Lookup lookup = MethodHandles.lookup(); |
| assertTrue((lookup.lookupModes() & MODULE) == MODULE); // [A0] |
| |
| // m1 |
| findConstructor(lookup, p1_Type1, void.class); // [A1] |
| findConstructor(lookup, p2_Type2, void.class); // [A1] |
| |
| // m2 |
| findConstructor(lookup, q1_Type1, void.class); // [A2] |
| findConstructorExpectingIAE(lookup, q2_Type2, void.class); // [A3] |
| |
| // java.base |
| findConstructor(lookup, Object.class, void.class); // [A2] |
| findConstructorExpectingIAE(lookup, x500NameClass, void.class, String.class); // [A3] |
| |
| // unnamed |
| findConstructor(lookup, unnamedClass, void.class); // [A3] |
| } |
| |
| /** |
| * Hop to lookup class in the same module |
| * |
| * [A0] module and public access is not lost |
| */ |
| public void testToSameModule() throws Exception { |
| Lookup lookup = MethodHandles.lookup().in(p2_Type2); |
| assertTrue(lookup.lookupModes() == (MODULE|PUBLIC)); // [A0] |
| |
| // m1 |
| findConstructor(lookup, p1_Type1, void.class); |
| findConstructor(lookup, p2_Type2, void.class); |
| |
| // m2 |
| findConstructor(lookup, q1_Type1, void.class); |
| findConstructorExpectingIAE(lookup, q2_Type2, void.class); |
| |
| // java.base |
| findConstructor(lookup, Object.class, void.class); |
| findConstructorExpectingIAE(lookup, x500NameClass, void.class, String.class); |
| |
| // unnamed |
| findConstructor(lookup, unnamedClass, void.class); |
| } |
| |
| /** |
| * Hop to lookup class in another named module |
| * |
| * [A0] has no access |
| */ |
| public void testFromNamedToNamedModule() throws Exception { |
| Lookup lookup = MethodHandles.lookup().in(q1_Type1); |
| assertTrue(lookup.lookupModes() == 0); // [A0] |
| |
| // m1 |
| findConstructorExpectingIAE(lookup, p1_Type1, void.class); |
| findConstructorExpectingIAE(lookup, p2_Type2, void.class); |
| |
| // m2 |
| findConstructorExpectingIAE(lookup, q1_Type1, void.class); |
| findConstructorExpectingIAE(lookup, q2_Type2, void.class); |
| |
| // java.base |
| findConstructorExpectingIAE(lookup, Object.class, void.class); |
| findConstructorExpectingIAE(lookup, x500NameClass, void.class, String.class); |
| |
| // unnamed |
| findConstructorExpectingIAE(lookup, unnamedClass, void.class); |
| } |
| |
| /** |
| * Hop to lookup class in an unnamed module |
| * |
| * [A0] has no access |
| */ |
| public void testFromNamedToUnnamedModule() throws Exception { |
| Lookup lookup = MethodHandles.lookup().in(unnamedClass); |
| assertTrue(lookup.lookupModes() == 0); // [A0] |
| |
| // m1 |
| findConstructorExpectingIAE(lookup, p1_Type1, void.class); |
| findConstructorExpectingIAE(lookup, p2_Type2, void.class); |
| |
| // m2 |
| findConstructorExpectingIAE(lookup, q1_Type1, void.class); |
| findConstructorExpectingIAE(lookup, q2_Type2, void.class); |
| |
| // java.base |
| findConstructorExpectingIAE(lookup, Object.class, void.class); |
| findConstructorExpectingIAE(lookup, x500NameClass, void.class, String.class); |
| |
| // unnamed |
| findConstructorExpectingIAE(lookup, unnamedClass, void.class); |
| } |
| |
| /** |
| * Hop from unnamed to named module. |
| * |
| * [A0] retains PUBLIC access |
| */ |
| public void testFromUnnamedToNamedModule() throws Exception { |
| Lookup lookup = MethodHandles.lookup(); |
| lookup = MethodHandles.privateLookupIn(unnamedClass, lookup).in(p1_Type1); |
| assertTrue(lookup.lookupModes() == PUBLIC); // A0 |
| |
| // m1 |
| findConstructor(lookup, p1_Type1, void.class); |
| findConstructorExpectingIAE(lookup, p2_Type2, void.class); |
| |
| // m2 |
| findConstructor(lookup, q1_Type1, void.class); |
| findConstructorExpectingIAE(lookup, q2_Type2, void.class); |
| |
| // java.base |
| findConstructor(lookup, Object.class, void.class); |
| findConstructorExpectingIAE(lookup, x500NameClass, void.class, String.class); |
| |
| // unnamed |
| findConstructor(lookup, unnamedClass, void.class); |
| } |
| |
| /** |
| * MethodHandles.publicLookup() |
| * |
| * [A0] has PUBLIC|UNCONDITIONAL access |
| */ |
| public void testPublicLookup() throws Exception { |
| Lookup lookup = MethodHandles.publicLookup(); |
| assertTrue(lookup.lookupModes() == (PUBLIC|UNCONDITIONAL)); // A0 |
| |
| // m1 |
| findConstructor(lookup, p1_Type1, void.class); |
| findConstructorExpectingIAE(lookup, p2_Type2, void.class); |
| |
| // m2 |
| findConstructor(lookup, q1_Type1, void.class); |
| findConstructorExpectingIAE(lookup, q2_Type2, void.class); |
| |
| // java.base |
| findConstructor(lookup, Object.class, void.class); |
| findConstructorExpectingIAE(lookup, x500NameClass, void.class, String.class); |
| |
| // unnamed |
| findConstructor(lookup, unnamedClass, void.class); |
| } |
| |
| /** |
| * Hop from publicLookup to accessible type in java.base |
| */ |
| public void testPublicLookupToBaseModule() throws Exception { |
| Lookup lookup = MethodHandles.publicLookup().in(String.class); |
| assertTrue(lookup.lookupModes() == PUBLIC); // A0 |
| |
| // m1 |
| findConstructorExpectingIAE(lookup, p1_Type1, void.class); |
| findConstructorExpectingIAE(lookup, p2_Type2, void.class); |
| |
| // m2 |
| findConstructorExpectingIAE(lookup, q1_Type1, void.class); |
| findConstructorExpectingIAE(lookup, q2_Type2, void.class); |
| |
| // java.base |
| findConstructor(lookup, Object.class, void.class); |
| findConstructorExpectingIAE(lookup, x500NameClass, void.class, String.class); |
| |
| // unnamed |
| findConstructorExpectingIAE(lookup, unnamedClass, void.class); |
| } |
| |
| |
| /** |
| * Hop from publicLookup to accessible type in named module. |
| * |
| * [A0] has PUBLIC access |
| */ |
| public void testPublicLookupToAccessibleTypeInNamedModule() throws Exception { |
| Lookup lookup = MethodHandles.publicLookup().in(p1_Type1); |
| assertTrue(lookup.lookupModes() == PUBLIC); // A0 |
| |
| // m1 |
| findConstructor(lookup, p1_Type1, void.class); |
| findConstructorExpectingIAE(lookup, p2_Type2, void.class); |
| |
| // m2 |
| findConstructor(lookup, q1_Type1, void.class); |
| findConstructorExpectingIAE(lookup, q2_Type2, void.class); |
| |
| // java.base |
| findConstructor(lookup, Object.class, void.class); |
| findConstructorExpectingIAE(lookup, x500NameClass, void.class, String.class); |
| |
| // unnamed |
| findConstructor(lookup, unnamedClass, void.class); |
| } |
| |
| /** |
| * Teleport from publicLookup to inaccessible type in named module. |
| * |
| * [A0] has no access |
| */ |
| public void testPublicLookupToInaccessibleTypeInNamedModule() throws Exception { |
| Lookup lookup = MethodHandles.publicLookup().in(p2_Type2); |
| assertTrue(lookup.lookupModes() == 0); // A0 |
| |
| // m1 |
| findConstructorExpectingIAE(lookup, p1_Type1, void.class); |
| findConstructorExpectingIAE(lookup, p2_Type2, void.class); |
| |
| // m2 |
| findConstructorExpectingIAE(lookup, q1_Type1, void.class); |
| findConstructorExpectingIAE(lookup, q2_Type2, void.class); |
| |
| // java.base |
| findConstructorExpectingIAE(lookup, Object.class, void.class); |
| findConstructorExpectingIAE(lookup, x500NameClass, void.class, String.class); |
| |
| // unnamed |
| findConstructorExpectingIAE(lookup, unnamedClass, void.class); |
| } |
| |
| /** |
| * Teleport from publicLookup to public type in unnamed module |
| * |
| * [A0] has PUBLIC access |
| */ |
| public void testPublicLookupToUnnamedModule() throws Exception { |
| Lookup lookup = MethodHandles.publicLookup().in(unnamedClass); |
| assertTrue(lookup.lookupModes() == PUBLIC); // A0 |
| |
| // m1 |
| findConstructor(lookup, p1_Type1, void.class); |
| findConstructorExpectingIAE(lookup, p2_Type2, void.class); |
| |
| // m2 |
| findConstructor(lookup, q1_Type1, void.class); |
| findConstructorExpectingIAE(lookup, q2_Type2, void.class); |
| |
| // java.base |
| findConstructor(lookup, Object.class, void.class); |
| findConstructorExpectingIAE(lookup, x500NameClass, void.class, String.class); |
| |
| // unnamed |
| findConstructor(lookup, unnamedClass, void.class); |
| } |
| |
| /** |
| * Invokes Lookup findConstructor with a method type constructored from the |
| * given return and parameter types, expecting IllegalAccessException to be |
| * thrown. |
| */ |
| static void findConstructorExpectingIAE(Lookup lookup, |
| Class<?> clazz, |
| Class<?> rtype, |
| Class<?>... ptypes) throws Exception { |
| try { |
| findConstructor(lookup, clazz, rtype, ptypes); |
| assertTrue(false); |
| } catch (IllegalAccessException expected) { } |
| } |
| |
| /** |
| * Invokes Lookup findConstructor with a method type constructored from the |
| * given return and parameter types. |
| */ |
| static MethodHandle findConstructor(Lookup lookup, |
| Class<?> clazz, |
| Class<?> rtype, |
| Class<?>... ptypes) throws Exception { |
| MethodType mt = MethodType.methodType(rtype, ptypes); |
| return lookup.findConstructor(clazz, mt); |
| } |
| } |