undefect. CWE-407 — 63 sites patched across 27 ecosystems
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
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733
test/jdk/java/lang/invoke/RevealDirectTest.java
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733
test/jdk/java/lang/invoke/RevealDirectTest.java
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@ -0,0 +1,733 @@
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/*
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* Copyright (c) 2013, 2024, Oracle and/or its affiliates. All rights reserved.
|
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
||||
*
|
||||
* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
|
||||
* published by the Free Software Foundation.
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||||
*
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||||
* 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.
|
||||
*
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||||
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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||||
* or visit www.oracle.com if you need additional information or have any
|
||||
* questions.
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*/
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/*
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* @test
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* @summary verify Lookup.revealDirect on a variety of input handles
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* @modules java.base/jdk.internal.reflect
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* @compile -XDignore.symbol.file RevealDirectTest.java
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* @run junit/othervm -ea -esa test.java.lang.invoke.RevealDirectTest
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*
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*/
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/* To run manually:
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* $ $JAVA8X_HOME/bin/javac -cp $JUNIT4_JAR -d ../../../.. -XDignore.symbol.file RevealDirectTest.java
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* $ $JAVA8X_HOME/bin/java -cp $JUNIT4_JAR:../../../.. -ea -esa org.junit.runner.JUnitCore test.java.lang.invoke.RevealDirectTest
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*/
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package test.java.lang.invoke;
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import java.lang.reflect.*;
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import java.lang.invoke.*;
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import static java.lang.invoke.MethodHandles.*;
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import static java.lang.invoke.MethodType.*;
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import static java.lang.invoke.MethodHandleInfo.*;
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import java.util.*;
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import static org.junit.Assert.*;
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import org.junit.*;
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public class RevealDirectTest {
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public static void main(String... av) throws Throwable {
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// Run the @Test methods explicitly, in case we don't want to use the JUnitCore driver.
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// This appears to be necessary when running with a security manager.
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Throwable fail = null;
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for (Method test : RevealDirectTest.class.getDeclaredMethods()) {
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if (!test.isAnnotationPresent(Test.class)) continue;
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try {
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test.invoke(new RevealDirectTest());
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} catch (Throwable ex) {
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if (ex instanceof InvocationTargetException)
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ex = ex.getCause();
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if (fail == null) fail = ex;
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System.out.println("Testcase: "+test.getName()
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+"("+test.getDeclaringClass().getName()
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+"):\tCaused an ERROR");
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System.out.println(ex);
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ex.printStackTrace(System.out);
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}
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}
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if (fail != null) throw fail;
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}
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public interface SimpleSuperInterface {
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public abstract int getInt();
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public static void printAll(String... args) {
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System.out.println(Arrays.toString(args));
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}
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public int NICE_CONSTANT = 42;
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}
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public interface SimpleInterface extends SimpleSuperInterface {
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default float getFloat() { return getInt(); }
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public static void printAll(String[] args) {
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System.out.println(Arrays.toString(args));
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}
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}
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public static class Simple implements SimpleInterface, Cloneable {
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public int intField;
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public final int finalField;
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private static String stringField;
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public int getInt() { return NICE_CONSTANT; }
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private static Number getNum() { return 804; }
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public Simple clone() {
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try {
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||||
return (Simple) super.clone();
|
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} catch (CloneNotSupportedException ex) {
|
||||
throw new RuntimeException(ex);
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}
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}
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Simple() { finalField = -NICE_CONSTANT; }
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private static Lookup localLookup() { return lookup(); }
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private static List<Member> members() { return getMembers(lookup().lookupClass()); };
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}
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static class Nestmate {
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private static Lookup localLookup() { return lookup(); }
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}
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static boolean VERBOSE = false;
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@Test public void testSimple() throws Throwable {
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if (VERBOSE) System.out.println("@Test testSimple");
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testOnMembers("testSimple", Simple.members(), Simple.localLookup());
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}
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@Test public void testPublicLookup() throws Throwable {
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if (VERBOSE) System.out.println("@Test testPublicLookup");
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List<Member> mems = publicOnly(Simple.members());
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Lookup pubLookup = publicLookup(), privLookup = Simple.localLookup();
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testOnMembers("testPublicLookup/1", mems, pubLookup);
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// reveal using publicLookup:
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testOnMembers("testPublicLookup/2", mems, privLookup, pubLookup);
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// lookup using publicLookup, but reveal using private:
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testOnMembers("testPublicLookup/3", mems, pubLookup, privLookup);
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}
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@Test public void testPublicLookupNegative() throws Throwable {
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if (VERBOSE) System.out.println("@Test testPublicLookupNegative");
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List<Member> mems = nonPublicOnly(Simple.members());
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Lookup pubLookup = publicLookup(), privLookup = Simple.localLookup();
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testOnMembersNoLookup("testPublicLookupNegative/1", mems, pubLookup);
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testOnMembersNoReveal("testPublicLookupNegative/2", mems, privLookup, pubLookup);
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testOnMembersNoReflect("testPublicLookupNegative/3", mems, privLookup, pubLookup);
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}
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@Test public void testJavaLangClass() throws Throwable {
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if (VERBOSE) System.out.println("@Test testJavaLangClass");
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List<Member> mems = callerSensitive(false, publicOnly(getMembers(Class.class)));
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mems = limit(20, mems);
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testOnMembers("testJavaLangClass", mems, Simple.localLookup());
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}
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@Test public void testCallerSensitive() throws Throwable {
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if (VERBOSE) System.out.println("@Test testCallerSensitive");
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List<Member> mems = union(getMembers(MethodHandles.class, "lookup"),
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getMembers(Method.class, "invoke"),
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getMembers(Field.class, "get", "set", "getLong"),
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getMembers(Class.class));
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mems = callerSensitive(true, publicOnly(mems));
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mems = limit(10, mems);
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testOnMembers("testCallerSensitive", mems, Simple.localLookup());
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}
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@Test public void testCallerSensitiveNegative() throws Throwable {
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if (VERBOSE) System.out.println("@Test testCallerSensitiveNegative");
|
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List<Member> mems = union(getMembers(MethodHandles.class, "lookup"),
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getMembers(Class.class, "forName"),
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getMembers(Method.class, "invoke"));
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mems = callerSensitive(true, publicOnly(mems));
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// CS methods cannot be looked up with publicLookup
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testOnMembersNoLookup("testCallerSensitiveNegative/1", mems, publicLookup());
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// CS methods have to be revealed with a matching lookupClass
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testOnMembersNoReveal("testCallerSensitiveNegative/2", mems, Simple.localLookup(), publicLookup());
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testOnMembersNoReveal("testCallerSensitiveNegative/3", mems, Simple.localLookup(), Nestmate.localLookup());
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// CS methods have to have original access
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Lookup lookup = Simple.localLookup().dropLookupMode(Lookup.ORIGINAL);
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testOnMembersNoLookup("testCallerSensitiveNegative/4", mems, lookup);
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testOnMembersNoReveal("testCallerSensitiveNegative/5", mems, Simple.localLookup(), lookup);
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}
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@Test public void testMethodHandleNatives() throws Throwable {
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if (VERBOSE) System.out.println("@Test testMethodHandleNatives");
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List<Member> mems = getMembers(MethodHandle.class, "invoke", "invokeExact");
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testOnMembers("testMethodHandleNatives", mems, Simple.localLookup());
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}
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@Test public void testMethodHandleInvokes() throws Throwable {
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if (VERBOSE) System.out.println("@Test testMethodHandleInvokes");
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List<MethodType> types = new ArrayList<>();
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Class<?>[] someParamTypes = { void.class, int.class, Object.class, Object[].class };
|
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for (Class<?> rt : someParamTypes) {
|
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for (Class<?> p0 : someParamTypes) {
|
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if (p0 == void.class) { types.add(methodType(rt)); continue; }
|
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for (Class<?> p1 : someParamTypes) {
|
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if (p1 == void.class) { types.add(methodType(rt, p0)); continue; }
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for (Class<?> p2 : someParamTypes) {
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if (p2 == void.class) { types.add(methodType(rt, p0, p1)); continue; }
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types.add(methodType(rt, p0, p1, p2));
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}
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}
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}
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}
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List<Member> mems = union(getPolyMembers(MethodHandle.class, "invoke", types),
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getPolyMembers(MethodHandle.class, "invokeExact", types));
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testOnMembers("testMethodHandleInvokes/1", mems, Simple.localLookup());
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testOnMembers("testMethodHandleInvokes/2", mems, publicLookup());
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}
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static List<Member> getPolyMembers(Class<?> cls, String name, List<MethodType> types) {
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assert(cls == MethodHandle.class);
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ArrayList<Member> mems = new ArrayList<>();
|
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for (MethodType type : types) {
|
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mems.add(new SignaturePolymorphicMethod(name, type));
|
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}
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return mems;
|
||||
}
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static List<Member> getMembers(Class<?> cls) {
|
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return getMembers(cls, (String[]) null);
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}
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static List<Member> getMembers(Class<?> cls, String... onlyNames) {
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List<String> names = (onlyNames == null || onlyNames.length == 0 ? null : Arrays.asList(onlyNames));
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ArrayList<Member> res = new ArrayList<>();
|
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for (Class<?> sup : getSupers(cls)) {
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res.addAll(getDeclaredMembers(sup, "getDeclaredFields"));
|
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res.addAll(getDeclaredMembers(sup, "getDeclaredMethods"));
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res.addAll(getDeclaredMembers(sup, "getDeclaredConstructors"));
|
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}
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res = new ArrayList<>(new LinkedHashSet<>(res));
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for (int i = 0; i < res.size(); i++) {
|
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Member mem = res.get(i);
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if (!canBeReached(mem, cls) ||
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res.indexOf(mem) != i ||
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mem.isSynthetic() ||
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(names != null && !names.contains(mem.getName()))
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||||
) {
|
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res.remove(i--);
|
||||
}
|
||||
}
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return res;
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}
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static List<Class<?>> getSupers(Class<?> cls) {
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||||
ArrayList<Class<?>> res = new ArrayList<>();
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ArrayList<Class<?>> intfs = new ArrayList<>();
|
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for (Class<?> sup = cls; sup != null; sup = sup.getSuperclass()) {
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res.add(sup);
|
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for (Class<?> intf : cls.getInterfaces()) {
|
||||
if (!intfs.contains(intf))
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intfs.add(intf);
|
||||
}
|
||||
}
|
||||
for (int i = 0; i < intfs.size(); i++) {
|
||||
for (Class<?> intf : intfs.get(i).getInterfaces()) {
|
||||
if (!intfs.contains(intf))
|
||||
intfs.add(intf);
|
||||
}
|
||||
}
|
||||
res.addAll(intfs);
|
||||
//System.out.println("getSupers => "+res);
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return res;
|
||||
}
|
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static List<Member> getDeclaredMembers(Class<?> cls, String accessor) {
|
||||
Member[] mems = {};
|
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Method getter = getMethod(Class.class, accessor);
|
||||
if (mems.length == 0) {
|
||||
try {
|
||||
mems = (Member[]) invokeMethod(getter, cls);
|
||||
} catch (SecurityException ex) {
|
||||
ex.printStackTrace();
|
||||
}
|
||||
}
|
||||
if (VERBOSE) System.out.println(accessor+" "+cls.getName()+" => "+mems.length+" members");
|
||||
return Arrays.asList(mems);
|
||||
}
|
||||
static Method getMethod(Class<?> cls, String name) {
|
||||
try {
|
||||
return cls.getMethod(name);
|
||||
} catch (ReflectiveOperationException ex) {
|
||||
throw new AssertionError(ex);
|
||||
}
|
||||
}
|
||||
static Object invokeMethod(Method m, Object recv, Object... args) {
|
||||
try {
|
||||
return m.invoke(recv, args);
|
||||
} catch (InvocationTargetException ex) {
|
||||
Throwable ex2 = ex.getCause();
|
||||
if (ex2 instanceof RuntimeException) throw (RuntimeException) ex2;
|
||||
if (ex2 instanceof Error) throw (Error) ex2;
|
||||
throw new AssertionError(ex);
|
||||
} catch (ReflectiveOperationException ex) {
|
||||
throw new AssertionError(ex);
|
||||
}
|
||||
}
|
||||
|
||||
static List<Member> limit(int len, List<Member> mems) {
|
||||
if (mems.size() <= len) return mems;
|
||||
return mems.subList(0, len);
|
||||
}
|
||||
@SafeVarargs
|
||||
static List<Member> union(List<Member> mems, List<Member>... mem2s) {
|
||||
for (List<Member> mem2 : mem2s) {
|
||||
for (Member m : mem2) {
|
||||
if (!mems.contains(m))
|
||||
mems.add(m);
|
||||
}
|
||||
}
|
||||
return mems;
|
||||
}
|
||||
static List<Member> callerSensitive(boolean cond, List<Member> members) {
|
||||
for (Iterator<Member> i = members.iterator(); i.hasNext(); ) {
|
||||
Member mem = i.next();
|
||||
if (isCallerSensitive(mem) != cond)
|
||||
i.remove();
|
||||
}
|
||||
if (members.isEmpty()) throw new AssertionError("trivial result");
|
||||
return members;
|
||||
}
|
||||
static boolean isCallerSensitive(Member mem) {
|
||||
if (!(mem instanceof AnnotatedElement)) return false;
|
||||
AnnotatedElement ae = (AnnotatedElement) mem;
|
||||
if (CS_CLASS != null)
|
||||
return ae.isAnnotationPresent(jdk.internal.reflect.CallerSensitive.class);
|
||||
for (java.lang.annotation.Annotation a : ae.getDeclaredAnnotations()) {
|
||||
if (a.toString().contains(".CallerSensitive"))
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
static final Class<?> CS_CLASS;
|
||||
static {
|
||||
Class<?> c = null;
|
||||
try {
|
||||
c = jdk.internal.reflect.CallerSensitive.class;
|
||||
} catch (SecurityException | LinkageError ex) {
|
||||
}
|
||||
CS_CLASS = c;
|
||||
}
|
||||
static List<Member> publicOnly(List<Member> members) {
|
||||
return removeMods(members, Modifier.PUBLIC, 0);
|
||||
}
|
||||
static List<Member> nonPublicOnly(List<Member> members) {
|
||||
return removeMods(members, Modifier.PUBLIC, -1);
|
||||
}
|
||||
static List<Member> removeMods(List<Member> members, int mask, int bits) {
|
||||
int publicMods = (mask & Modifier.PUBLIC);
|
||||
members = new ArrayList<>(members);
|
||||
for (Iterator<Member> i = members.iterator(); i.hasNext(); ) {
|
||||
Member mem = i.next();
|
||||
int mods = mem.getModifiers();
|
||||
if ((publicMods & mods) != 0 &&
|
||||
(publicMods & mem.getDeclaringClass().getModifiers()) == 0)
|
||||
mods -= publicMods;
|
||||
if ((mods & mask) == (bits & mask))
|
||||
i.remove();
|
||||
}
|
||||
return members;
|
||||
}
|
||||
|
||||
void testOnMembers(String tname, List<Member> mems, Lookup lookup, Lookup... lookups) throws Throwable {
|
||||
if (VERBOSE) System.out.println("testOnMembers "+mems);
|
||||
Lookup revLookup = (lookups.length > 0) ? lookups[0] : null;
|
||||
if (revLookup == null) revLookup = lookup;
|
||||
Lookup refLookup = (lookups.length > 1) ? lookups[1] : null;
|
||||
if (refLookup == null) refLookup = lookup;
|
||||
assert(lookups.length <= 2);
|
||||
testOnMembersImpl(tname, mems, lookup, revLookup, refLookup, NO_FAIL);
|
||||
}
|
||||
void testOnMembersNoLookup(String tname, List<Member> mems, Lookup lookup) throws Throwable {
|
||||
if (VERBOSE) System.out.println("testOnMembersNoLookup "+mems);
|
||||
testOnMembersImpl(tname, mems, lookup, null, null, FAIL_LOOKUP);
|
||||
}
|
||||
void testOnMembersNoReveal(String tname, List<Member> mems,
|
||||
Lookup lookup, Lookup negLookup) throws Throwable {
|
||||
if (VERBOSE) System.out.println("testOnMembersNoReveal "+mems);
|
||||
testOnMembersImpl(tname, mems, lookup, negLookup, null, FAIL_REVEAL);
|
||||
}
|
||||
void testOnMembersNoReflect(String tname, List<Member> mems,
|
||||
Lookup lookup, Lookup negLookup) throws Throwable {
|
||||
if (VERBOSE) System.out.println("testOnMembersNoReflect "+mems);
|
||||
testOnMembersImpl(tname, mems, lookup, lookup, negLookup, FAIL_REFLECT);
|
||||
}
|
||||
void testOnMembersImpl(String tname, List<Member> mems,
|
||||
Lookup lookup,
|
||||
Lookup revLookup,
|
||||
Lookup refLookup,
|
||||
int failureMode) throws Throwable {
|
||||
Throwable fail = null;
|
||||
int failCount = 0;
|
||||
failureModeCounts = new int[FAIL_MODE_COUNT];
|
||||
long tm0 = System.currentTimeMillis();
|
||||
for (Member mem : mems) {
|
||||
try {
|
||||
testWithMember(mem, lookup, revLookup, refLookup, failureMode);
|
||||
} catch (Throwable ex) {
|
||||
if (fail == null) fail = ex;
|
||||
if (++failCount > 10) { System.out.println("*** FAIL: too many failures"); break; }
|
||||
System.out.println("*** FAIL: "+mem+" => "+ex);
|
||||
if (VERBOSE) ex.printStackTrace(System.out);
|
||||
}
|
||||
}
|
||||
long tm1 = System.currentTimeMillis();
|
||||
System.out.printf("@Test %s executed %s tests in %d ms",
|
||||
tname, testKinds(failureModeCounts), (tm1-tm0)).println();
|
||||
if (fail != null) throw fail;
|
||||
}
|
||||
static String testKinds(int[] modes) {
|
||||
int pos = modes[0], neg = -pos;
|
||||
for (int n : modes) neg += n;
|
||||
if (neg == 0) return pos + " positive";
|
||||
String negs = "";
|
||||
for (int n : modes) negs += "/"+n;
|
||||
negs = negs.replaceFirst("/"+pos+"/", "");
|
||||
negs += " negative";
|
||||
if (pos == 0) return negs;
|
||||
return pos + " positive, " + negs;
|
||||
}
|
||||
static class SignaturePolymorphicMethod implements Member { // non-reflected instance of MH.invoke*
|
||||
final String name;
|
||||
final MethodType type;
|
||||
SignaturePolymorphicMethod(String name, MethodType type) {
|
||||
this.name = name;
|
||||
this.type = type;
|
||||
}
|
||||
public String toString() {
|
||||
String typeStr = type.toString();
|
||||
if (isVarArgs()) typeStr = typeStr.replaceFirst("\\[\\])$", "...)");
|
||||
return (Modifier.toString(getModifiers())
|
||||
+typeStr.substring(0, typeStr.indexOf('('))+" "
|
||||
+getDeclaringClass().getTypeName()+"."
|
||||
+getName()+typeStr.substring(typeStr.indexOf('(')));
|
||||
}
|
||||
public boolean equals(Object x) {
|
||||
return (x instanceof SignaturePolymorphicMethod && equals((SignaturePolymorphicMethod)x));
|
||||
}
|
||||
public boolean equals(SignaturePolymorphicMethod that) {
|
||||
return this.name.equals(that.name) && this.type.equals(that.type);
|
||||
}
|
||||
public int hashCode() {
|
||||
return name.hashCode() * 31 + type.hashCode();
|
||||
}
|
||||
public Class<?> getDeclaringClass() { return MethodHandle.class; }
|
||||
public String getName() { return name; }
|
||||
public MethodType getMethodType() { return type; }
|
||||
public int getModifiers() { return Modifier.PUBLIC | Modifier.FINAL | Modifier.NATIVE | SYNTHETIC; }
|
||||
public boolean isVarArgs() { return Modifier.isTransient(getModifiers()); }
|
||||
public boolean isSynthetic() { return true; }
|
||||
public Class<?> getReturnType() { return type.returnType(); }
|
||||
public Class<?>[] getParameterTypes() { return type.parameterArray(); }
|
||||
static final int SYNTHETIC = 0x00001000;
|
||||
}
|
||||
static class UnreflectResult { // a tuple
|
||||
final MethodHandle mh;
|
||||
final Throwable ex;
|
||||
final byte kind;
|
||||
final Member mem;
|
||||
final int var;
|
||||
UnreflectResult(MethodHandle mh, byte kind, Member mem, int var) {
|
||||
this.mh = mh;
|
||||
this.ex = null;
|
||||
this.kind = kind;
|
||||
this.mem = mem;
|
||||
this.var = var;
|
||||
}
|
||||
UnreflectResult(Throwable ex, byte kind, Member mem, int var) {
|
||||
this.mh = null;
|
||||
this.ex = ex;
|
||||
this.kind = kind;
|
||||
this.mem = mem;
|
||||
this.var = var;
|
||||
}
|
||||
public String toString() {
|
||||
return toInfoString()+"/v"+var;
|
||||
}
|
||||
public String toInfoString() {
|
||||
return String.format("%s %s.%s:%s", MethodHandleInfo.referenceKindToString(kind),
|
||||
mem.getDeclaringClass().getName(), name(mem), type(mem, kind));
|
||||
}
|
||||
static String name(Member mem) {
|
||||
if (mem instanceof Constructor) return "<init>";
|
||||
return mem.getName();
|
||||
}
|
||||
static MethodType type(Member mem, byte kind) {
|
||||
if (mem instanceof Field) {
|
||||
Class<?> type = ((Field)mem).getType();
|
||||
if (kind == REF_putStatic || kind == REF_putField)
|
||||
return methodType(void.class, type);
|
||||
return methodType(type);
|
||||
} else if (mem instanceof SignaturePolymorphicMethod) {
|
||||
return ((SignaturePolymorphicMethod)mem).getMethodType();
|
||||
}
|
||||
Class<?>[] params = ((Executable)mem).getParameterTypes();
|
||||
if (mem instanceof Constructor)
|
||||
return methodType(void.class, params);
|
||||
Class<?> type = ((Method)mem).getReturnType();
|
||||
return methodType(type, params);
|
||||
}
|
||||
}
|
||||
static UnreflectResult unreflectMember(Lookup lookup, Member mem, int variation) {
|
||||
byte[] refKind = {0};
|
||||
try {
|
||||
return unreflectMemberOrThrow(lookup, mem, variation, refKind);
|
||||
} catch (ReflectiveOperationException|SecurityException ex) {
|
||||
return new UnreflectResult(ex, refKind[0], mem, variation);
|
||||
}
|
||||
}
|
||||
static UnreflectResult unreflectMemberOrThrow(Lookup lookup, Member mem, int variation,
|
||||
byte[] refKind) throws ReflectiveOperationException {
|
||||
Class<?> cls = lookup.lookupClass();
|
||||
Class<?> defc = mem.getDeclaringClass();
|
||||
String name = mem.getName();
|
||||
int mods = mem.getModifiers();
|
||||
boolean isStatic = Modifier.isStatic(mods);
|
||||
MethodHandle mh = null;
|
||||
byte kind = 0;
|
||||
if (mem instanceof Method) {
|
||||
Method m = (Method) mem;
|
||||
MethodType type = methodType(m.getReturnType(), m.getParameterTypes());
|
||||
boolean canBeSpecial = (!isStatic &&
|
||||
(lookup.lookupModes() & Modifier.PRIVATE) != 0 &&
|
||||
defc.isAssignableFrom(cls) &&
|
||||
(!defc.isInterface() || Arrays.asList(cls.getInterfaces()).contains(defc)));
|
||||
if (variation >= 2)
|
||||
kind = REF_invokeSpecial;
|
||||
else if (isStatic)
|
||||
kind = REF_invokeStatic;
|
||||
else if (defc.isInterface())
|
||||
kind = REF_invokeInterface;
|
||||
else
|
||||
kind = REF_invokeVirtual;
|
||||
refKind[0] = kind;
|
||||
switch (variation) {
|
||||
case 0:
|
||||
mh = lookup.unreflect(m);
|
||||
break;
|
||||
case 1:
|
||||
if (defc == MethodHandle.class &&
|
||||
!isStatic &&
|
||||
m.isVarArgs() &&
|
||||
Modifier.isFinal(mods) &&
|
||||
Modifier.isNative(mods)) {
|
||||
break;
|
||||
}
|
||||
if (isStatic)
|
||||
mh = lookup.findStatic(defc, name, type);
|
||||
else
|
||||
mh = lookup.findVirtual(defc, name, type);
|
||||
break;
|
||||
case 2:
|
||||
if (!canBeSpecial)
|
||||
break;
|
||||
mh = lookup.unreflectSpecial(m, lookup.lookupClass());
|
||||
break;
|
||||
case 3:
|
||||
if (!canBeSpecial)
|
||||
break;
|
||||
mh = lookup.findSpecial(defc, name, type, lookup.lookupClass());
|
||||
break;
|
||||
}
|
||||
} else if (mem instanceof SignaturePolymorphicMethod) {
|
||||
SignaturePolymorphicMethod m = (SignaturePolymorphicMethod) mem;
|
||||
MethodType type = methodType(m.getReturnType(), m.getParameterTypes());
|
||||
kind = REF_invokeVirtual;
|
||||
refKind[0] = kind;
|
||||
switch (variation) {
|
||||
case 0:
|
||||
mh = lookup.findVirtual(defc, name, type);
|
||||
break;
|
||||
}
|
||||
} else if (mem instanceof Constructor) {
|
||||
name = "<init>"; // not used
|
||||
Constructor<?> m = (Constructor<?>) mem;
|
||||
MethodType type = methodType(void.class, m.getParameterTypes());
|
||||
kind = REF_newInvokeSpecial;
|
||||
refKind[0] = kind;
|
||||
switch (variation) {
|
||||
case 0:
|
||||
mh = lookup.unreflectConstructor(m);
|
||||
break;
|
||||
case 1:
|
||||
mh = lookup.findConstructor(defc, type);
|
||||
break;
|
||||
}
|
||||
} else if (mem instanceof Field) {
|
||||
Field m = (Field) mem;
|
||||
Class<?> type = m.getType();
|
||||
boolean canHaveSetter = !Modifier.isFinal(mods);
|
||||
if (variation >= 2)
|
||||
kind = (byte)(isStatic ? REF_putStatic : REF_putField);
|
||||
else
|
||||
kind = (byte)(isStatic ? REF_getStatic : REF_getField);
|
||||
refKind[0] = kind;
|
||||
switch (variation) {
|
||||
case 0:
|
||||
mh = lookup.unreflectGetter(m);
|
||||
break;
|
||||
case 1:
|
||||
if (isStatic)
|
||||
mh = lookup.findStaticGetter(defc, name, type);
|
||||
else
|
||||
mh = lookup.findGetter(defc, name, type);
|
||||
break;
|
||||
case 3:
|
||||
if (!canHaveSetter)
|
||||
break;
|
||||
mh = lookup.unreflectSetter(m);
|
||||
break;
|
||||
case 2:
|
||||
if (!canHaveSetter)
|
||||
break;
|
||||
if (isStatic)
|
||||
mh = lookup.findStaticSetter(defc, name, type);
|
||||
else
|
||||
mh = lookup.findSetter(defc, name, type);
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
throw new IllegalArgumentException(String.valueOf(mem));
|
||||
}
|
||||
if (mh == null)
|
||||
// ran out of valid variations; return null to caller
|
||||
return null;
|
||||
return new UnreflectResult(mh, kind, mem, variation);
|
||||
}
|
||||
static boolean canBeReached(Member mem, Class<?> cls) {
|
||||
Class<?> defc = mem.getDeclaringClass();
|
||||
String name = mem.getName();
|
||||
int mods = mem.getModifiers();
|
||||
if (mem instanceof Constructor) {
|
||||
name = "<init>"; // according to 292 spec.
|
||||
}
|
||||
if (defc == cls)
|
||||
return true;
|
||||
if (name.startsWith("<"))
|
||||
return false; // only my own constructors
|
||||
if (Modifier.isPrivate(mods))
|
||||
return false; // only my own constructors
|
||||
if (defc.getPackage() == cls.getPackage())
|
||||
return true; // package access or greater OK
|
||||
if (Modifier.isPublic(mods))
|
||||
return true; // publics always OK
|
||||
if (Modifier.isProtected(mods) && defc.isAssignableFrom(cls))
|
||||
return true; // protected OK
|
||||
return false;
|
||||
}
|
||||
static boolean consistent(UnreflectResult res, MethodHandleInfo info) {
|
||||
assert(res.mh != null);
|
||||
assertEquals(res.kind, info.getReferenceKind());
|
||||
assertEquals(res.mem.getModifiers(), info.getModifiers());
|
||||
assertEquals(res.mem.getDeclaringClass(), info.getDeclaringClass());
|
||||
String expectName = res.mem.getName();
|
||||
if (res.kind == REF_newInvokeSpecial)
|
||||
expectName = "<init>";
|
||||
assertEquals(expectName, info.getName());
|
||||
MethodType expectType = res.mh.type();
|
||||
if ((res.kind & 1) == (REF_getField & 1))
|
||||
expectType = expectType.dropParameterTypes(0, 1);
|
||||
if (res.kind == REF_newInvokeSpecial)
|
||||
expectType = expectType.changeReturnType(void.class);
|
||||
assertEquals(expectType, info.getMethodType());
|
||||
assertEquals(res.mh.isVarargsCollector(), isVarArgs(info));
|
||||
assertEquals(res.toInfoString(), info.toString());
|
||||
assertEquals(res.toInfoString(), MethodHandleInfo.toString(info.getReferenceKind(), info.getDeclaringClass(), info.getName(), info.getMethodType()));
|
||||
return true;
|
||||
}
|
||||
static boolean isVarArgs(MethodHandleInfo info) {
|
||||
return info.isVarArgs();
|
||||
}
|
||||
static boolean consistent(Member mem, Member mem2) {
|
||||
assertEquals(mem, mem2);
|
||||
return true;
|
||||
}
|
||||
static boolean consistent(MethodHandleInfo info, MethodHandleInfo info2) {
|
||||
assertEquals(info.getReferenceKind(), info2.getReferenceKind());
|
||||
assertEquals(info.getModifiers(), info2.getModifiers());
|
||||
assertEquals(info.getDeclaringClass(), info2.getDeclaringClass());
|
||||
assertEquals(info.getName(), info2.getName());
|
||||
assertEquals(info.getMethodType(), info2.getMethodType());
|
||||
assertEquals(isVarArgs(info), isVarArgs(info));
|
||||
return true;
|
||||
}
|
||||
static boolean consistent(MethodHandle mh, MethodHandle mh2) {
|
||||
assertEquals(mh.type(), mh2.type());
|
||||
assertEquals(mh.isVarargsCollector(), mh2.isVarargsCollector());
|
||||
return true;
|
||||
}
|
||||
int[] failureModeCounts;
|
||||
static final int NO_FAIL=0, FAIL_LOOKUP=1, FAIL_REVEAL=2, FAIL_REFLECT=3, FAIL_MODE_COUNT=4;
|
||||
void testWithMember(Member mem,
|
||||
Lookup lookup, // initial lookup of member => MH
|
||||
Lookup revLookup, // reveal MH => info
|
||||
Lookup refLookup, // reflect info => member
|
||||
int failureMode) throws Throwable {
|
||||
boolean expectEx1 = (failureMode == FAIL_LOOKUP); // testOnMembersNoLookup
|
||||
boolean expectEx2 = (failureMode == FAIL_REVEAL); // testOnMembersNoReveal
|
||||
boolean expectEx3 = (failureMode == FAIL_REFLECT); // testOnMembersNoReflect
|
||||
for (int variation = 0; ; variation++) {
|
||||
UnreflectResult res = unreflectMember(lookup, mem, variation);
|
||||
failureModeCounts[failureMode] += 1;
|
||||
if (variation == 0) assert(res != null);
|
||||
if (res == null) break;
|
||||
if (VERBOSE && variation == 0)
|
||||
System.out.println("from "+mem.getDeclaringClass().getSimpleName());
|
||||
MethodHandle mh = res.mh;
|
||||
Throwable ex1 = res.ex;
|
||||
if (VERBOSE) System.out.println(" "+variation+": "+res+" << "+(mh != null ? mh : ex1));
|
||||
if (expectEx1 && ex1 != null)
|
||||
continue; // this is OK; we expected that lookup to fail
|
||||
if (expectEx1)
|
||||
throw new AssertionError("unexpected lookup for negative test");
|
||||
if (ex1 != null && !expectEx1) {
|
||||
if (failureMode != NO_FAIL)
|
||||
throw new AssertionError("unexpected lookup failure for negative test", ex1);
|
||||
throw ex1;
|
||||
}
|
||||
MethodHandleInfo info;
|
||||
try {
|
||||
info = revLookup.revealDirect(mh);
|
||||
if (expectEx2) throw new AssertionError("unexpected revelation for negative test");
|
||||
} catch (IllegalArgumentException|SecurityException ex2) {
|
||||
if (VERBOSE) System.out.println(" "+variation+": "+res+" => "+mh.getClass().getName()+" => (EX2)"+ex2);
|
||||
if (expectEx2)
|
||||
continue; // this is OK; we expected the reflect to fail
|
||||
if (failureMode != NO_FAIL)
|
||||
throw new AssertionError("unexpected revelation failure for negative test", ex2);
|
||||
throw ex2;
|
||||
}
|
||||
assert(consistent(res, info));
|
||||
Member mem2;
|
||||
try {
|
||||
mem2 = info.reflectAs(Member.class, refLookup);
|
||||
if (expectEx3) throw new AssertionError("unexpected reflection for negative test");
|
||||
assert(!(mem instanceof SignaturePolymorphicMethod));
|
||||
} catch (IllegalArgumentException ex3) {
|
||||
if (VERBOSE) System.out.println(" "+variation+": "+info+" => (EX3)"+ex3);
|
||||
if (expectEx3)
|
||||
continue; // this is OK; we expected the reflect to fail
|
||||
if (mem instanceof SignaturePolymorphicMethod)
|
||||
continue; // this is OK; we cannot reflect MH.invokeExact(a,b,c)
|
||||
if (failureMode != NO_FAIL)
|
||||
throw new AssertionError("unexpected reflection failure for negative test", ex3);
|
||||
throw ex3;
|
||||
}
|
||||
assert(consistent(mem, mem2));
|
||||
UnreflectResult res2 = unreflectMember(lookup, mem2, variation);
|
||||
MethodHandle mh2 = res2.mh;
|
||||
assert(consistent(mh, mh2));
|
||||
MethodHandleInfo info2 = lookup.revealDirect(mh2);
|
||||
assert(consistent(info, info2));
|
||||
assert(consistent(res, info2));
|
||||
Member mem3 = MethodHandles.reflectAs(Member.class, mh2);
|
||||
assert(consistent(mem2, mem3));
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue