1 /* 2 * Copyright (c) 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 import java.io.File; 25 import java.net.URL; 26 import java.net.URLClassLoader; 27 import java.nio.file.Path; 28 import java.nio.file.Paths; 29 import java.util.jar.Attributes; 30 import java.util.jar.Manifest; 31 import jdk.test.lib.util.JarUtils; 32 import jdk.test.lib.compiler.InMemoryJavaCompiler; 33 34 /* 35 * @test 36 * @bug 8216401 8235361 37 * @summary Test classloading via JAR Class-Path entries 38 * @library /test/lib 39 * 40 * @run main/othervm JarClassPathFileEntry 41 * @run main/othervm -Djdk.net.URLClassPath.disableClassPathURLCheck=true JarClassPathFileEntry 42 * @run main/othervm -Djdk.net.URLClassPath.disableClassPathURLCheck=false JarClassPathFileEntry 43 */ 44 45 public class JarClassPathFileEntry { 46 private final static boolean IS_WINDOWS = System.getProperty("os.name").startsWith("Windows"); 47 48 private final static String TEST_CLASSES = System.getProperty("test.classes"); 49 private final static String OTHER_DIR = TEST_CLASSES + "/OTHER/"; 50 51 private final static Path OTHER_JAR_PATH = Paths.get(OTHER_DIR, "Other.jar"); 52 private final static Path CONTEXT_JAR_PATH = Paths.get(TEST_CLASSES, "Context.jar"); 53 54 public static void main(String[] args) throws Throwable { 55 String fileScheme = "file:" + (IS_WINDOWS ? toUnixPath(OTHER_JAR_PATH.toString()) 56 : OTHER_JAR_PATH.toString()); 57 doTest(fileScheme); 58 59 if (IS_WINDOWS) { 60 // Relative URL encoding of absolute path, e.g. /C:\\path\\to\\file.jar 61 String driveLetter = "/" + OTHER_JAR_PATH; 62 doTest(driveLetter); 63 } 64 } 65 66 /* Load a class from Other.jar via the given Class-Path entry */ 67 private static void doTest(String classPathEntry) throws Throwable { 68 // Create Other.class in OTHER_DIR, off the default classpath 69 byte klassbuf[] = InMemoryJavaCompiler.compile("Other", 70 "public class Other {}"); 71 ClassFileInstaller.writeClassToDisk("Other", klassbuf, OTHER_DIR); 72 73 // Create Other.jar in OTHER_DIR 74 JarUtils.createJarFile(OTHER_JAR_PATH, 75 Paths.get(OTHER_DIR), 76 Paths.get(OTHER_DIR, "Other.class")); 77 78 // Create Context.class 79 klassbuf = InMemoryJavaCompiler.compile("Context", 80 "public class Context {}"); 81 ClassFileInstaller.writeClassToDisk("Context", klassbuf, TEST_CLASSES); 82 83 // Create Context.jar w/ "file:" entry for Other.jar 84 Manifest mf = new Manifest(); 85 Attributes attrs = mf.getMainAttributes(); 86 attrs.put(Attributes.Name.MANIFEST_VERSION, "1.0"); 87 88 attrs.put(Attributes.Name.CLASS_PATH, classPathEntry); 89 90 System.out.println("Creating Context.jar with Class-Path: " + classPathEntry); 91 JarUtils.createJarFile(CONTEXT_JAR_PATH, mf, 92 Paths.get(TEST_CLASSES), 93 Paths.get(TEST_CLASSES, "Context.class")); 94 95 // Use URLClassLoader w/ Context.jar to load Other.class, which will 96 // load via the Class-Path entry 97 URL url = CONTEXT_JAR_PATH.toUri().toURL(); 98 URLClassLoader ucl = new URLClassLoader("TestURLClassLoader", 99 new URL[]{ url }, 100 null); // don't delegate to App CL 101 Class<?> otherClass = Class.forName("Other", true, ucl); // ClassNotFoundException -> fail 102 System.out.println("Loaded: " + otherClass); 103 } 104 105 /* Convert a Windows path to a unix-style path, and remove any drive letter */ 106 private static String toUnixPath(String orig) { 107 String retVal = new File(orig).toURI().getPath(); 108 int colonAt = retVal.indexOf(':'); 109 110 if (colonAt != -1 && colonAt < 3) { 111 retVal = retVal.substring(colonAt + 1); // Start after the drive letter 112 } 113 return retVal; 114 } 115 }