1 /* 2 * Copyright (c) 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 8190332 27 * @summary Test verifies whether PNGImageReader throws IIOException 28 * or not when IHDR width value is very high. 29 * @run main PngLargeIHDRDimensionTest 30 */ 31 32 import java.io.ByteArrayInputStream; 33 import java.io.InputStream; 34 import java.util.Base64; 35 import javax.imageio.IIOException; 36 import javax.imageio.ImageIO; 37 38 public class PngLargeIHDRDimensionTest { 39 40 /* 41 * IHDR width is very large and when we try to create buffer to store 42 * image information of each row it overflows and we get 43 * NegativeArraySizeException without the fix for this bug. 44 */ 45 private static String negativeArraySizeExceptionInput = "iVBORw0KGgoAAAANS" 46 + "UhEUg////0AAAABEAIAAAA6fptVAAAACklEQVQYV2P4DwABAQEAWk1v8QAAAAB" 47 + "JRU5ErkJgggo="; 48 49 /* 50 * IHDR width is ((2 to the power of 31) - 2), which is the maximum VM 51 * limit to create an array we get OutOfMemoryError without the fix 52 * for this bug. 53 */ 54 private static String outOfMemoryErrorInput = "iVBORw0KGgoAAAANSUhEUgAAAAF/" 55 + "///+CAAAAAA6fptVAAAACklEQVQYV2P4DwABAQEAWk1v8QAAAABJRU5" 56 + "ErkJgggo="; 57 58 private static InputStream input; 59 private static Boolean firstTestFailed = true, secondTestFailed = true; 60 public static void main(String[] args) throws java.io.IOException { 61 byte[] inputBytes = Base64.getDecoder(). 62 decode(negativeArraySizeExceptionInput); 63 input = new ByteArrayInputStream(inputBytes); 64 65 try { 66 ImageIO.read(input); 67 } catch (IIOException e) { 68 firstTestFailed = false; 69 } 70 71 inputBytes = Base64.getDecoder().decode(outOfMemoryErrorInput); 72 input = new ByteArrayInputStream(inputBytes); 73 74 try { 75 ImageIO.read(input); 76 } catch (IIOException e) { 77 secondTestFailed = false; 78 } 79 80 if (firstTestFailed || secondTestFailed) { 81 throw new RuntimeException("Test doesn't throw required" 82 + " IIOException"); 83 } 84 } 85 } 86