129 lines
4.7 KiB
Java
129 lines
4.7 KiB
Java
/*
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* Copyright (c) 2018, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* 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
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* 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
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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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
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* questions.
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*/
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/*
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* @test
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* @bug 8055206
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* @summary Check that each module loaded by the platform loader has the
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* proper "accessClassInPackage" RuntimePermissions to access its
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* qualified exports.
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* @run main CheckAccessClassInPackagePermissions
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*/
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import java.lang.module.ModuleDescriptor;
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import java.lang.module.ModuleDescriptor.Exports;
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import java.net.URL;
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import java.security.CodeSigner;
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import java.security.CodeSource;
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import java.security.Policy;
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import java.security.ProtectionDomain;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Map.Entry;
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import java.util.Optional;
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import java.util.Set;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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public class CheckAccessClassInPackagePermissions {
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public static void main(String[] args) throws Exception {
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// Get the modules in the boot layer loaded by the boot or platform
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// loader
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ModuleLayer bootLayer = ModuleLayer.boot();
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Set<Module> modules = bootLayer.modules()
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.stream()
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.filter(CheckAccessClassInPackagePermissions::isBootOrPlatformMod)
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.collect(Collectors.toSet());
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// Create map of target module's qualified export packages
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Map<String, List<String>> map = new HashMap<>();
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Set<Exports> qualExports =
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modules.stream()
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.map(Module::getDescriptor)
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.map(ModuleDescriptor::exports)
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.flatMap(Set::stream)
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.filter(Exports::isQualified)
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.collect(Collectors.toSet());
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for (Exports e : qualExports) {
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Set<String> targets = e.targets();
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for (String t : targets) {
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map.compute(t, (k, ov) -> {
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if (ov == null) {
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List<String> v = new ArrayList<>();
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v.add(e.source());
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return v;
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} else {
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ov.add(e.source());
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return ov;
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}
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});
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}
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}
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// Check if each target module has the right permissions to access
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// its qualified exports
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Policy policy = Policy.getPolicy();
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for (Map.Entry<String, List<String>> me : map.entrySet()) {
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String moduleName = me.getKey();
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// is this a module loaded by the platform loader?
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Optional<Module> module = bootLayer.findModule(moduleName);
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if (!module.isPresent()) {
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continue;
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}
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Module mod = module.get();
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if (mod.getClassLoader() != ClassLoader.getPlatformClassLoader()) {
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continue;
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}
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// create ProtectionDomain simulating module
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URL url = new URL("jrt:/" + moduleName);
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CodeSource cs = new CodeSource(url, (CodeSigner[])null);
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ProtectionDomain pd = new ProtectionDomain(cs, null, null, null);
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List<String> pkgs = me.getValue();
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for (String p : pkgs) {
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RuntimePermission rp =
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new RuntimePermission("accessClassInPackage." + p);
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if (!policy.implies(pd, rp)) {
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throw new Exception("Module " + mod + " has not been " +
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"granted " + rp);
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}
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}
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}
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}
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/**
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* Returns true if the module's loader is the boot or platform loader.
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*/
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private static boolean isBootOrPlatformMod(Module m) {
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return m.getClassLoader() == null ||
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m.getClassLoader() == ClassLoader.getPlatformClassLoader();
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}
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}
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