1 /*
   2  * Copyright (c) 2002, 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 /*
  25  * @test
  26  * @bug 4660047
  27  * @summary Tests if the JPEG reader/writer crashes the VM if certain methods
  28  *          are called after a call to dispose()
  29  */
  30 
  31 import java.awt.image.BufferedImage;
  32 import java.io.ByteArrayInputStream;
  33 import java.io.ByteArrayOutputStream;
  34 import java.io.IOException;
  35 import java.io.InputStream;
  36 import java.io.OutputStream;
  37 import java.util.Iterator;
  38 
  39 import javax.imageio.ImageIO;
  40 import javax.imageio.ImageReader;
  41 import javax.imageio.ImageWriter;
  42 import javax.imageio.stream.ImageInputStream;
  43 import javax.imageio.stream.ImageOutputStream;
  44 
  45 public class CrashAfterDispose {
  46 
  47     public static void main(String[] args) throws IOException {
  48         InputStream bais = new ByteArrayInputStream(new byte[100]);
  49         ImageInputStream iis = ImageIO.createImageInputStream(bais);
  50 
  51         // find the JPEG reader
  52         ImageReader reader = null;
  53         Iterator readers = ImageIO.getImageReadersByFormatName("jpeg");
  54         if (readers.hasNext()) {
  55             reader = (ImageReader)readers.next();
  56         } else {
  57             throw new RuntimeException("Unable to find a reader!");
  58         }
  59 
  60         // dispose the reader, then poke and prod it... the reader should
  61         // throw exceptions (which will be caught by this test), but it
  62         // should not crash the VM
  63         reader.dispose();
  64 
  65         try {
  66             reader.setInput(iis);
  67         } catch (IllegalStateException e) {
  68         }
  69 
  70         try {
  71             reader.read(0);
  72         } catch (IllegalStateException e) {
  73         }
  74 
  75         try {
  76             reader.abort();
  77         } catch (IllegalStateException e) {
  78         }
  79 
  80         try {
  81             reader.reset();
  82         } catch (IllegalStateException e) {
  83         }
  84 
  85         try {
  86             reader.dispose();
  87         } catch (IllegalStateException e) {
  88         }
  89 
  90         // find the JPEG writer
  91         ImageWriter writer = null;
  92         Iterator writers = ImageIO.getImageWritersByFormatName("jpeg");
  93         if (writers.hasNext()) {
  94             writer = (ImageWriter)writers.next();
  95         } else {
  96             throw new RuntimeException("Unable to find a writer!");
  97         }
  98 
  99         // set up output stream
 100         OutputStream baos = new ByteArrayOutputStream();
 101         ImageOutputStream ios = ImageIO.createImageOutputStream(baos);
 102         BufferedImage bi = new BufferedImage(10, 10,
 103                                              BufferedImage.TYPE_INT_RGB);
 104 
 105         // dispose the writer, then poke and prod it... the writer should
 106         // throw exceptions (which will be caught by this test), but it
 107         // should not crash the VM
 108         writer.dispose();
 109 
 110         try {
 111             writer.setOutput(ios);
 112         } catch (IllegalStateException e) {
 113         }
 114 
 115         try {
 116             writer.write(bi);
 117         } catch (IllegalStateException e) {
 118         }
 119 
 120         try {
 121             writer.abort();
 122         } catch (IllegalStateException e) {
 123         }
 124 
 125         try {
 126             writer.reset();
 127         } catch (IllegalStateException e) {
 128         }
 129 
 130         try {
 131             writer.dispose();
 132         } catch (IllegalStateException e) {
 133         }
 134     }
 135 }