1 /* 2 * Copyright (c) 2005, 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 6337925 27 * @summary Ensure that callers cannot modify the internal JarEntry cert and 28 * codesigner arrays. 29 * @author Sean Mullan 30 */ 31 import java.io.InputStream; 32 import java.security.CodeSigner; 33 import java.security.cert.Certificate; 34 import java.util.*; 35 import java.util.jar.*; 36 37 public class GetMethodsReturnClones { 38 39 private final static String BASE = System.getProperty("test.src", ".") + 40 System.getProperty("file.separator"); 41 42 public static void main(String[] args) throws Exception { 43 List<JarEntry> entries = new ArrayList<>(); 44 try (JarFile jf = new JarFile(BASE + "test.jar", true)) { 45 byte[] buffer = new byte[8192]; 46 Enumeration<JarEntry> e = jf.entries(); 47 while (e.hasMoreElements()) { 48 JarEntry je = e.nextElement(); 49 entries.add(je); 50 try (InputStream is = jf.getInputStream(je)) { 51 while (is.read(buffer, 0, buffer.length) != -1) { 52 // we just read. this will throw a SecurityException 53 // if a signature/digest check fails. 54 } 55 } 56 } 57 } 58 59 for (JarEntry je : entries) { 60 Certificate[] certs = je.getCertificates(); 61 CodeSigner[] signers = je.getCodeSigners(); 62 if (certs != null) { 63 certs[0] = null; 64 certs = je.getCertificates(); 65 if (certs[0] == null) { 66 throw new Exception("Modified internal certs array"); 67 } 68 } 69 if (signers != null) { 70 signers[0] = null; 71 signers = je.getCodeSigners(); 72 if (signers[0] == null) { 73 throw new Exception("Modified internal codesigners array"); 74 } 75 } 76 } 77 } 78 }