| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.netbeans.core.startup; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Member; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Modifier; |
| import java.net.URL; |
| import java.util.Enumeration; |
| import org.netbeans.PatchByteCode; |
| import org.netbeans.junit.NbTestCase; |
| import org.openide.modules.ConstructorDelegate; |
| import org.openide.modules.PatchFor; |
| import org.openide.modules.PatchedPublic; |
| |
| public class AsmTest extends NbTestCase { |
| |
| public AsmTest(String n) { |
| super(n); |
| } |
| |
| public static class C { |
| static final long x = 123L; // test CONSTANT_Long, tricky! |
| private C(boolean _) {} |
| @PatchedPublic |
| private C(int _) {} |
| private void m1() {} |
| @PatchedPublic |
| private void m2() {} |
| } |
| |
| public static class Superclazz { |
| public int val; |
| } |
| |
| public static class CAPI extends Superclazz { |
| public int otherVal; |
| |
| public CAPI() { |
| otherVal = 1; |
| } |
| } |
| |
| @PatchFor(CAPI.class) |
| public static class CompatAPI extends Superclazz { |
| @ConstructorDelegate |
| protected static void createAPI(CompatAPI inst, int val2) { |
| inst.val = val2; |
| } |
| } |
| |
| public static class CAPI2 { |
| CAPI2() {} |
| } |
| |
| @PatchFor(CAPI2.class) |
| public static class CompatAPI2 { |
| @ConstructorDelegate |
| public static void createAPI(CAPI2 inst, String[] param) { |
| } |
| } |
| |
| public void testPatchingPublic() throws Exception { |
| Class<?> c = new L().loadClass(C.class.getName()); |
| assertNotSame(c, C.class); |
| Member m; |
| m = c.getDeclaredConstructor(boolean.class); |
| assertEquals(0, m.getModifiers() & Modifier.PUBLIC); |
| assertEquals(Modifier.PRIVATE, m.getModifiers() & Modifier.PRIVATE); |
| m = c.getDeclaredConstructor(int.class); |
| assertEquals(Modifier.PUBLIC, m.getModifiers() & Modifier.PUBLIC); |
| assertEquals(0, m.getModifiers() & Modifier.PRIVATE); |
| m = c.getDeclaredMethod("m1"); |
| assertEquals(0, m.getModifiers() & Modifier.PUBLIC); |
| assertEquals(Modifier.PRIVATE, m.getModifiers() & Modifier.PRIVATE); |
| m = c.getDeclaredMethod("m2"); |
| assertEquals(Modifier.PUBLIC, m.getModifiers() & Modifier.PUBLIC); |
| assertEquals(0, m.getModifiers() & Modifier.PRIVATE); |
| } |
| |
| public void testPatchSuperclass() throws Exception { |
| Class<?> c = new L().loadClass(CAPI.class.getName()); |
| assertNotSame(c, CAPI.class); |
| |
| Class s = c.getSuperclass(); |
| assertNotSame(s, Object.class); |
| assertEquals(CompatAPI.class.getName(), s.getName()); |
| } |
| |
| public void testPatchSuperclassWithArray() throws Exception { |
| Class<?> c = new L().loadClass(CAPI2.class.getName()); |
| assertNotSame(c, CAPI2.class); |
| Class s = c.getSuperclass(); |
| assertEquals(CompatAPI2.class.getName(), s.getName()); |
| Constructor<?> init = c.getConstructor(String[].class); |
| init.newInstance((Object)new String[] {"a","b"}); |
| } |
| |
| public void testGeneratedConstructor() throws Exception { |
| Class<?> c = new L().loadClass(CAPI.class.getName()); |
| Member m = c.getDeclaredConstructor(int.class); |
| assertEquals(Modifier.PROTECTED, m.getModifiers() & (Modifier.PRIVATE | Modifier.PROTECTED | Modifier.PRIVATE)); |
| } |
| |
| public void testExecutingConstructor() throws Exception { |
| ClassLoader l = new L(); |
| Class<?> c = l.loadClass(CAPI.class.getName()); |
| Member m = c.getDeclaredConstructor(int.class); |
| Constructor ctor = (Constructor)m; |
| ctor.setAccessible(true); |
| |
| Object o = ctor.newInstance(5); |
| assertSame(c, o.getClass()); |
| assertTrue("Invalid API superclass", Superclazz.class.isInstance(o)); |
| |
| assertEquals("@ConstructorDelegate method did not execute", 5, ((Superclazz)o).val); |
| |
| Field f = o.getClass().getField("otherVal"); |
| Object v = f.get(o); |
| assertEquals("Patched API constructor did not execute", v, 1); |
| } |
| |
| |
| |
| private static class L extends ClassLoader { |
| |
| L() { |
| super(L.class.getClassLoader()); |
| } |
| |
| @Override |
| protected synchronized Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException { |
| if (name.startsWith(AsmTest.class.getName() + "$C")) { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| InputStream in = getResourceAsStream(name.replace('.', '/') + ".class"); |
| int r; |
| try { |
| while ((r = in.read()) != -1) { |
| baos.write(r); |
| } |
| } catch (IOException x) { |
| throw new ClassNotFoundException(name, x); |
| } |
| byte[] data; |
| try { |
| Enumeration<URL> res = getResources("META-INF/.bytecodePatched"); // NOI18N |
| Method fs = PatchByteCode.class.getDeclaredMethod("fromStream", Enumeration.class, ClassLoader.class); |
| Method apply = PatchByteCode.class.getDeclaredMethod("apply", String.class, byte[].class); |
| fs.setAccessible(true); |
| apply.setAccessible(true); |
| PatchByteCode pbc = (PatchByteCode) fs.invoke(null, res, this); |
| data = (byte[]) apply.invoke(pbc, name, baos.toByteArray()); |
| } catch (Exception x) { |
| throw new ClassNotFoundException(name, x); |
| } |
| Class c = defineClass(name, data, 0, data.length); |
| if (resolve) { |
| resolveClass(c); |
| } |
| return c; |
| } else { |
| return super.loadClass(name, resolve); |
| } |
| } |
| } |
| |
| } |