1 /*
   2  * Copyright (c) 2015, 2017, 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 /* @test
  25  * @bug 6907252
  26  * @summary ZipFileInputStream Not Thread-Safe
  27  * @library /test/lib
  28  * @build jdk.test.lib.Platform
  29  *        jdk.test.lib.Utils
  30  *        jdk.test.lib.Asserts
  31  *        jdk.test.lib.JDKToolFinder
  32  *        jdk.test.lib.JDKToolLauncher
  33  *        jdk.test.lib.process.*
  34  *        jdk.test.lib.util.FileUtils
  35  * @run main ZipEntryFreeTest
  36  */
  37 
  38 import java.io.*;
  39 import java.nio.file.Paths;
  40 import java.util.Random;
  41 import java.util.Timer;
  42 import java.util.TimerTask;
  43 import java.util.zip.*;
  44 import jdk.test.lib.util.FileUtils;
  45 
  46 public class ZipEntryFreeTest extends Thread {
  47 
  48     private static final int NUM_THREADS = 5;
  49     private static final int TEST_ITERATIONS = 5;
  50     private static final String ZIPFILE_NAME = "large.zip";
  51     private static final String ZIPENTRY_NAME = "random.txt";
  52     private static InputStream is = null;
  53     final Timer timer = new Timer();
  54 
  55     public static void main(String args[]) throws Exception {
  56         createZipFile();
  57         try {
  58             for (int i = 0; i < TEST_ITERATIONS; i++) {
  59                runTest();
  60             }
  61         } finally {
  62             FileUtils.deleteFileIfExistsWithRetry(Paths.get(ZIPFILE_NAME));
  63         }
  64     }
  65 
  66     private static void runTest() throws Exception {
  67         try (ZipFile zf = new ZipFile(new File(ZIPFILE_NAME))) {
  68             is = zf.getInputStream(zf.getEntry(ZIPENTRY_NAME + "_0"));
  69             Thread[] threadArray = new Thread[NUM_THREADS];
  70             for (int i = 0; i < threadArray.length; i++) {
  71                 threadArray[i] = new ZipEntryFreeTest();
  72             }
  73             for (int i = 0; i < threadArray.length; i++) {
  74                 threadArray[i].start();
  75             }
  76             for (int i = 0; i < threadArray.length; i++) {
  77                 threadArray[i].join();
  78             }
  79         }
  80     }
  81 
  82     private static void createZipFile() throws Exception {
  83         Random rnd = new Random(1000L);
  84         byte[] contents = new byte[2_000_000];
  85         ZipEntry ze = null;
  86 
  87         try (ZipOutputStream zos =
  88             new ZipOutputStream(new FileOutputStream(ZIPFILE_NAME))) {
  89             // uncompressed mode seemed to tickle the crash
  90             zos.setMethod(ZipOutputStream.STORED);
  91             for (int ze_count = 0; ze_count < 10; ze_count++) {
  92                 rnd.nextBytes(contents);
  93                 ze = createZipEntry(contents, ze_count);
  94                 zos.putNextEntry(ze);
  95                 zos.write(contents, 0, contents.length);
  96             }
  97             zos.flush();
  98         }
  99     }
 100 
 101     private static ZipEntry createZipEntry(byte[] b, int i) {
 102         ZipEntry ze = new ZipEntry(ZIPENTRY_NAME + "_" + i);
 103         ze.setCompressedSize(b.length);
 104         ze.setSize(b.length);
 105         CRC32 crc = new CRC32();
 106         crc.update(b);
 107         ze.setCrc(crc.getValue());
 108         return ze;
 109     }
 110 
 111     @Override
 112     public void run() {
 113         try {
 114             int iteration = 0;
 115             TimerTask tt = (new TimerTask() {
 116                 @Override
 117                 public void run() {
 118                     try {
 119                         is.close();
 120                     } catch (Exception ex) {
 121                          ex.printStackTrace(System.out);
 122                     }
 123                 }
 124             });
 125             timer.schedule(tt, 50);
 126             while (is.read() != -1 && iteration++ < 1_000) { }
 127         } catch (ZipException ze) {
 128             // ZipException now expected instead of ZIP_Read crash
 129             System.out.println(ze);
 130         } catch (Exception e) {
 131             throw new RuntimeException(e);
 132         } finally {
 133             timer.cancel();
 134         }
 135     }
 136 }