| /* |
| * 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. |
| */ |
| |
| package p3; |
| |
| import java.io.FilePermission; |
| import java.lang.module.Configuration; |
| import java.lang.module.ModuleFinder; |
| import java.lang.reflect.Layer; |
| import java.lang.reflect.Module; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.security.AccessControlException; |
| import java.security.Permission; |
| import java.util.Set; |
| |
| public class NoAccess { |
| private static final Module M3 = NoAccess.class.getModule(); |
| private static final Path MODS_DIR1 = Paths.get("mods1"); |
| private static final Path MODS_DIR2 = Paths.get("mods2"); |
| public static void main(String[] args) throws Exception { |
| // disable security manager until Class.forName is called. |
| SecurityManager sm = System.getSecurityManager(); |
| if (sm != null) { |
| System.setSecurityManager(null); |
| } |
| |
| ModuleFinder finder = ModuleFinder.of(Paths.get("mods1"), Paths.get("mods2")); |
| |
| Layer bootLayer = Layer.boot(); |
| Configuration parent = bootLayer.configuration(); |
| |
| Configuration cf = parent.resolveRequiresAndUses(finder, |
| ModuleFinder.of(), |
| Set.of("m1", "m2")); |
| |
| ClassLoader scl = ClassLoader.getSystemClassLoader(); |
| Layer layer = bootLayer.defineModulesWithManyLoaders(cf, scl); |
| |
| if (sm != null) { |
| System.setSecurityManager(sm); |
| } |
| |
| Module m1 = bootLayer.findModule("m1").get(); |
| Module m2 = bootLayer.findModule("m2").get(); |
| Module m3 = bootLayer.findModule("m3").get(); |
| |
| findClass(m1, "p1.internal.B"); |
| findClass(m2, "p2.C"); |
| findClass(m3, "p3.internal.Foo"); |
| |
| // permissions granted |
| findClass(m1, "p1.A"); |
| findClass(m1, "p1.internal.B"); |
| findClass(m2, "p2.C"); |
| findClass(m3, "p3.internal.Foo"); |
| |
| |
| // m1 and m2 from a different layer |
| m1 = layer.findModule("m1").get(); |
| m2 = layer.findModule("m2").get(); |
| m3 = layer.findModule("m3").get(); |
| |
| findClass(m1, "p1.A"); |
| findClass(m3, "p3.internal.Foo"); |
| |
| // no permission |
| Path path = MODS_DIR1.resolve("p1").resolve("internal").resolve("B.class"); |
| findClass(m1, "p1.internal.B", new FilePermission(path.toString(), "read")); |
| path = MODS_DIR2.resolve("p2").resolve("C.class"); |
| findClass(m2, "p2.C", new FilePermission(path.toString(), "read")); |
| } |
| |
| static Class<?> findClass(Module module, String cn) { |
| return findClass(module, cn, null); |
| } |
| |
| static Class<?> findClass(Module module, String cn, Permission perm) { |
| try { |
| Class<?> c = Class.forName(module, cn); |
| if (c == null) { |
| throw new RuntimeException(cn + " not found in " + module); |
| } |
| if (c.getModule() != module) { |
| throw new RuntimeException(c.getModule() + " != " + module); |
| } |
| return c; |
| } catch (AccessControlException e) { |
| if (e.getPermission().equals(perm)) |
| return null; |
| throw e; |
| } |
| } |
| } |