1/*
2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24package p3;
25
26import java.security.AccessControlException;
27import java.security.Permission;
28
29/**
30 * Verify RuntimePermission("getClassLoader") is needed to load
31 * a class in another module
32 */
33public class NoGetClassLoaderAccess {
34    private static final Module m3 = NoGetClassLoaderAccess.class.getModule();
35    private static final Permission GET_CLASSLOADER_PERMISSION = new RuntimePermission("getClassLoader");
36
37    public static void main(String[] args) throws Exception {
38        ModuleLayer boot = ModuleLayer.boot();
39
40        System.setSecurityManager(new SecurityManager());
41        Module m1 = boot.findModule("m1").get();
42        Module m2 = boot.findModule("m2").get();
43        findClass(m1, "p1.A");
44        findClass(m1, "p1.internal.B");
45        findClass(m2, "p2.C");
46        findClass(m3, "p3.internal.Foo");
47    }
48
49    static Class<?> findClass(Module module, String cn) {
50        try {
51            Class<?> c = Class.forName(module, cn);
52            if (c == null) {
53                throw new RuntimeException(cn + " not found in " + module);
54            }
55            if (c.getModule() != module) {
56                throw new RuntimeException(c.getModule() + " != " + module);
57            }
58            return c;
59        } catch (AccessControlException e) {
60            if (module != m3) {
61                if (e.getPermission().equals(GET_CLASSLOADER_PERMISSION))
62                    return null;
63            }
64            throw e;
65        }
66    }
67}
68