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 8190512 27 * @summary Test verifies whether PNGImageReader throws IIOException with 28 * proper message or not when IHDR chunk contains negative value 29 * for width. 30 * @run main PngNegativeDimensionTest 31 */ 32 33 import java.io.ByteArrayInputStream; 34 import java.io.IOException; 35 import java.io.InputStream; 36 import java.util.Base64; 37 import javax.imageio.ImageIO; 38 39 public class PngNegativeDimensionTest { 40 private static String inputImageBase64 = "iVBORw0KGgoAAAANSUhEUoAAAAEAAAAB" 41 + "CAAAAAA6fptVAAAACklEQVQYV2P4DwABAQEAWk1v8QAAAABJRU5ErkJgggo="; 42 43 public static void main(String[] args) throws IOException { 44 // Create InputStream 45 byte[] inputBytes = Base64.getDecoder().decode(inputImageBase64); 46 InputStream input = new ByteArrayInputStream(inputBytes); 47 48 // Attempt to read PNG with negative IHDR width 49 try { 50 ImageIO.read(input); 51 } catch (IOException e) { 52 /* 53 * We expect the test case to throw IOException with message 54 * under root cause as "Image width <= 0!". If it throws 55 * any other message or exception test will fail. 56 */ 57 Throwable cause = e.getCause(); 58 if (cause == null || 59 (!(cause.getMessage().equals("Image width <= 0!")))) 60 { 61 throw e; 62 } 63 } 64 } 65 }