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/*
* Copyright (c) 2016, 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
* @modules jdk.compiler
* @summary Test java.lang.Module methods that specify permission checks
* @run main/othervm -Djava.security.policy=${test.src}/allow.policy WithSecurityManager allow
* @run main/othervm WithSecurityManager deny
*/
import java.io.IOException;
import java.io.InputStream;
import java.lang.module.Configuration;
import java.lang.module.ModuleFinder;
import java.lang.module.ModuleReference;
import java.util.Collections;
import java.util.Optional;
import java.util.Set;
/**
* Test java.lang.Module methods that specify permission checks.
*/
public class WithSecurityManager {
// a module that will be loaded into a child layer
static final String ANOTHER_MODULE = "jdk.compiler";
static final String ANOTHER_MODULE_RESOURCE = "com/sun/tools/javac/Main.class";
public static void main(String[] args) throws IOException {
boolean allow = args[0].equals("allow");
// base module, in the boot layer
Module base = Object.class.getModule();
// another module, in a child layer
Module other = loadModuleInChildLayer(ANOTHER_MODULE);
assertTrue(other.getLayer() != ModuleLayer.boot());
System.setSecurityManager(new SecurityManager());
test(base, "java/lang/Object.class", allow);
test(other, ANOTHER_MODULE_RESOURCE, allow);
}
/**
* Test the permission checks by invoking methods on the given module.
*
* If {@code allow} is {@code true} then the permission checks should succeed.
*/
static void test(Module m, String name, boolean allow) throws IOException {
// test Module::getClassLoader
System.out.format("Test getClassLoader on %s ...%n", m);
try {
ClassLoader cl = m.getClassLoader();
System.out.println(cl);
if (!allow)
assertTrue("getClassLoader should have failed", false);
} catch (SecurityException e) {
System.out.println(e + " thrown");
if (allow)
throw e;
}
// test Module::getResourceAsStream
System.out.format("Test getResourceAsStream(\"%s\") on %s ...%n", name, m);
try (InputStream in = m.getResourceAsStream(name)) {
System.out.println(in);
if (allow && (in == null))
assertTrue(name + " not found", false);
if (!allow && (in != null))
assertTrue(name + " should not be found", false);
}
}
/**
* Create a module layer that contains the given system module.
*/
static Module loadModuleInChildLayer(String mn) {
Optional<ModuleReference> omref = ModuleFinder.ofSystem().find(mn);
assertTrue("module " + mn + " not a system module", omref.isPresent());
// create a ModuleFinder that only finds this module
ModuleReference mref = omref.get();
ModuleFinder finder = new ModuleFinder() {
@Override
public Optional<ModuleReference> find(String name) {
if (name.equals(mn))
return Optional.of(mref);
else
return Optional.empty();
}
@Override
public Set<ModuleReference> findAll() {
return Collections.singleton(mref);
}
};
// create a child configuration and layer with this module
ModuleLayer bootLayer = ModuleLayer.boot();
Configuration cf = bootLayer
.configuration()
.resolve(finder, ModuleFinder.of(), Set.of(ANOTHER_MODULE));
ModuleLayer layer = bootLayer.defineModulesWithOneLoader(cf, null);
Optional<Module> om = layer.findModule(mn);
assertTrue("module " + mn + " not in child layer", om.isPresent());
return om.get();
}
static void assertTrue(String msg, boolean e) {
if (!e)
throw new RuntimeException(msg);
}
static void assertTrue(boolean e) {
if (!e)
throw new RuntimeException();
}
}
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