1 /*
   2  * Copyright (c) 2018, 2019, 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 
  24 /*
  25  * @test
  26  * @bug 8151486 8218266
  27  * @summary Call Class.forName() on the system classloader from a class loaded
  28  *          from a custom classloader, using the current class's protection domain.
  29  * @library /test/lib
  30  * @modules java.base/jdk.internal.misc
  31  * @build jdk.test.lib.Utils
  32  *        jdk.test.lib.util.JarUtils
  33  * @build ClassForName ProtectionDomainCacheTest
  34  * @run main/othervm/policy=test.policy -Djava.security.manager ProtectionDomainCacheTest
  35  */
  36 
  37 import java.net.URL;
  38 import java.net.URLClassLoader;
  39 import java.nio.file.FileSystems;
  40 import java.nio.file.Files;
  41 import java.nio.file.Path;
  42 import java.nio.file.Paths;
  43 import java.util.List;
  44 import jdk.test.lib.Utils;
  45 import jdk.test.lib.util.JarUtils;
  46 import java.io.File;
  47 
  48 import jdk.test.lib.process.OutputAnalyzer;
  49 import jdk.test.lib.process.ProcessTools;
  50 
  51 /*
  52  * Create .jar, load ClassForName from .jar using a URLClassLoader
  53  */
  54 public class ProtectionDomainCacheTest {
  55     static class Test {
  56         private static final long TIMEOUT = (long)(5000.0 * Utils.TIMEOUT_FACTOR);
  57         private static final String TESTCLASSES = System.getProperty("test.classes", ".");
  58         private static final String CLASSFILENAME = "ClassForName.class";
  59 
  60         // Use a new classloader to load the ClassForName class.
  61         public static void loadAndRun(Path jarFilePath)
  62                 throws Exception {
  63             ClassLoader classLoader = new URLClassLoader(
  64                     new URL[]{jarFilePath.toUri().toURL()}) {
  65                 @Override public String toString() { return "LeakedClassLoader"; }
  66             };
  67 
  68             Class<?> loadClass = Class.forName("ClassForName", true, classLoader);
  69             loadClass.newInstance();
  70 
  71             System.out.println("returning : " + classLoader);
  72         }
  73 
  74         public static void main(final String[] args) throws Exception {
  75             // Create a temporary .jar file containing ClassForName.class
  76             Path testClassesDir = Paths.get(TESTCLASSES);
  77             Path jarFilePath = Files.createTempFile("cfn", ".jar");
  78             JarUtils.createJarFile(jarFilePath, testClassesDir, CLASSFILENAME);
  79             jarFilePath.toFile().deleteOnExit();
  80 
  81             // Remove the ClassForName.class file that jtreg built, to make sure
  82             // we're loading from the tmp .jar
  83             Path classFile = FileSystems.getDefault().getPath(TESTCLASSES,
  84                                                               CLASSFILENAME);
  85             Files.delete(classFile);
  86 
  87             loadAndRun(jarFilePath);
  88 
  89             // Give the GC a chance to unload protection domains
  90             for (int i = 0; i < 100; i++) {
  91                 System.gc();
  92             }
  93             System.out.println("All Classloaders and protection domain cache entries successfully unloaded");
  94         }
  95     }
  96 
  97     public static void main(String args[]) throws Exception {
  98         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  99                                       "-Djava.security.policy==" + System.getProperty("test.src") + File.separator + "test.policy",
 100                                       "-Dtest.classes=" + System.getProperty("test.classes", "."),
 101                                       "-XX:+UnlockDiagnosticVMOptions",
 102                                       "-XX:VerifySubSet=dictionary",
 103                                       "-XX:+VerifyAfterGC",
 104                                       "-Xlog:gc+verify,protectiondomain=debug",
 105                                       "-Djava.security.manager",
 106                                       Test.class.getName());
 107         OutputAnalyzer output = new OutputAnalyzer(pb.start());
 108         output.shouldContain("PD in set is not alive");
 109         output.shouldHaveExitValue(0);
 110     }
 111 }