engineering/java-topology
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

undefect. CWE-407 — 63 sites patched across 27 ecosystems

Browse source 
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.
This commit is contained in:
russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
70422 changed files with 17213626 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

161
test/jdk/java/lang/invoke/DropLookupModeTest.java Normal file
View file

@ -0,0 +1,161 @@
/*
* Copyright (c) 2016, 2026, 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.
*/
/*
* @test
* @run junit DropLookupModeTest
* @summary Basic unit tests Lookup::dropLookupMode
*/
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodHandles.Lookup;
import static java.lang.invoke.MethodHandles.Lookup.*;
import static org.junit.jupiter.api.Assertions.*;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.MethodSource;
import org.junit.jupiter.params.provider.ValueSource;
public class DropLookupModeTest {
/**
* Basic test of dropLookupMode
*/
@Test
public void testBasic() {
final Lookup fullPowerLookup = MethodHandles.lookup();
final Class<?> lc = fullPowerLookup.lookupClass();
assertEquals(PUBLIC | MODULE | PACKAGE | PROTECTED | PRIVATE | ORIGINAL, fullPowerLookup.lookupModes());
Lookup lookup = fullPowerLookup.dropLookupMode(PRIVATE);
assertSame(lc, lookup.lookupClass());
assertEquals(PUBLIC | MODULE | PACKAGE, lookup.lookupModes());
lookup = fullPowerLookup.dropLookupMode(PROTECTED);
assertSame(lc, lookup.lookupClass());
assertEquals(PUBLIC | MODULE | PACKAGE | PRIVATE, lookup.lookupModes());
lookup = fullPowerLookup.dropLookupMode(PACKAGE);
assertSame(lc, lookup.lookupClass());
assertEquals(PUBLIC | MODULE, lookup.lookupModes());
lookup = fullPowerLookup.dropLookupMode(MODULE);
assertSame(lc, lookup.lookupClass());
assertEquals(PUBLIC, lookup.lookupModes());
lookup = fullPowerLookup.dropLookupMode(PUBLIC);
assertSame(lc, lookup.lookupClass());
assertEquals(0, lookup.lookupModes());
lookup = fullPowerLookup.dropLookupMode(UNCONDITIONAL);
assertSame(lc, lookup.lookupClass());
assertEquals(PUBLIC | MODULE | PACKAGE | PRIVATE, lookup.lookupModes());
}
/**
* Starting with a full power Lookup, use dropLookupMode to create new Lookups
* with reduced access.
*/
@Test
public void testReducingAccess() {
Lookup lookup = MethodHandles.lookup();
final Class<?> lc = lookup.lookupClass();
assertEquals(PUBLIC | MODULE | PACKAGE | PROTECTED | PRIVATE | ORIGINAL, lookup.lookupModes());
lookup = lookup.dropLookupMode(PROTECTED);
assertSame(lc, lookup.lookupClass());
assertEquals(PUBLIC | MODULE | PACKAGE | PRIVATE, lookup.lookupModes());
lookup = lookup.dropLookupMode(PRIVATE);
assertSame(lc, lookup.lookupClass());
assertEquals(PUBLIC | MODULE | PACKAGE, lookup.lookupModes());
lookup = lookup.dropLookupMode(PACKAGE);
assertSame(lc, lookup.lookupClass());
assertEquals(PUBLIC | MODULE, lookup.lookupModes());
lookup = lookup.dropLookupMode(MODULE);
assertSame(lc, lookup.lookupClass());
assertEquals(PUBLIC, lookup.lookupModes());
lookup = lookup.dropLookupMode(PUBLIC);
assertSame(lc, lookup.lookupClass());
assertEquals(0, lookup.lookupModes());
// repeat with lookup has no access
lookup = lookup.dropLookupMode(PUBLIC);
assertSame(lc, lookup.lookupClass());
assertEquals(0, lookup.lookupModes());
}
public static Object[][] unconditionals() {
Lookup publicLookup = MethodHandles.publicLookup();
return new Object[][] {
{ publicLookup, Object.class },
{ publicLookup.in(String.class), String.class },
{ publicLookup.in(DropLookupModeTest.class), DropLookupModeTest.class },
};
}
/**
* Test dropLookupMode on the lookup with public lookup
* and UNCONDITIONAL
*/
@ParameterizedTest
@MethodSource("unconditionals")
public void testUnconditionalLookup(Lookup unconditionalLookup, Class<?> expected) {
assertEquals(UNCONDITIONAL, unconditionalLookup.lookupModes());
assertPublicLookup(unconditionalLookup.dropLookupMode(PRIVATE), expected);
assertPublicLookup(unconditionalLookup.dropLookupMode(PROTECTED), expected);
assertPublicLookup(unconditionalLookup.dropLookupMode(PACKAGE), expected);
assertPublicLookup(unconditionalLookup.dropLookupMode(MODULE), expected);
assertPublicLookup(unconditionalLookup.dropLookupMode(PUBLIC), expected);
// drop all access
Lookup lookup = unconditionalLookup.dropLookupMode(UNCONDITIONAL);
assertSame(expected, lookup.lookupClass());
assertEquals(0, lookup.lookupModes());
}
private void assertPublicLookup(Lookup lookup, Class<?> expected) {
assertSame(expected, lookup.lookupClass());
assertEquals(UNCONDITIONAL, lookup.lookupModes());
}
/**
* Check that IllegalArgumentException is thrown for bad input
*/
@ParameterizedTest
@ValueSource(ints = {
0,
(PACKAGE|PRIVATE), // two modes
Integer.MAX_VALUE,
Integer.MIN_VALUE,
})
public void testBadInput(int modeToDrop) {
assertThrows(IllegalArgumentException.class, () -> MethodHandles.lookup().dropLookupMode(modeToDrop));
}
}