1 /*
   2  * Copyright (c) 2018, 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     8211422
  27  * @summary Test verifies that PNGImageReader does not throw
  28  *          IIOException when IEND chunk has corrupt CRC chunk.
  29  * @run     main PNGCorruptCRCForIENDChunkTest
  30  */
  31 
  32 import java.io.ByteArrayInputStream;
  33 import java.util.Base64;
  34 import javax.imageio.ImageIO;
  35 import java.util.Iterator;
  36 import javax.imageio.ImageReader;
  37 import javax.imageio.stream.ImageInputStream;
  38 import java.awt.image.BufferedImage;
  39 
  40 public class PNGCorruptCRCForIENDChunkTest {
  41 
  42     // PNG image stream having corrupt CRC for IEND chunk
  43     private static String inputImageBase64 = "iVBORw0KGgoAAAANSUhEUgAAAA" +
  44             "8AAAAQCAYAAADJViUEAAAAIElEQVR4XmNQllf4Ty5mABHkgFHNJIJRzSSCo" +
  45             "a6ZXAwA26ElUIYphtYAAAAASUVORK5C";
  46 
  47     public static void main(String[] args) throws Exception {
  48 
  49         byte[] inputBytes = Base64.getDecoder().decode(inputImageBase64);
  50         ByteArrayInputStream bais = new ByteArrayInputStream(inputBytes);
  51         ImageInputStream input = ImageIO.createImageInputStream(bais);
  52         Iterator iter = ImageIO.getImageReaders(input);
  53         ImageReader reader = (ImageReader) iter.next();
  54         reader.setInput(input, false, false);
  55         BufferedImage image = reader.read(0, reader.getDefaultReadParam());
  56     }
  57 }