/*
* Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* questions.
*/
/**
* @test
* @bug 6541476 6782079
* @summary Write and read a PNG file including an non-latin1 iTXt chunk
* Test also verifies that trunkated png images does not cause
* an OoutOfMemory error.
*
* @run main ItxtUtf8Test
*
* @run main/othervm/timeout=10 -Xmx2m ItxtUtf8Test truncate
*/
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.OutputStream;
import java.util.Arrays;
import java.util.List;
import javax.imageio.IIOException;
import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageReader;
import javax.imageio.ImageTypeSpecifier;
import javax.imageio.ImageWriter;
import javax.imageio.metadata.IIOMetadata;
import javax.imageio.stream.ImageInputStream;
import javax.imageio.stream.ImageOutputStream;
import javax.imageio.stream.MemoryCacheImageInputStream;
import javax.imageio.stream.MemoryCacheImageOutputStream;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.bootstrap.DOMImplementationRegistry;
public class ItxtUtf8Test {
public static final String
TEXT = "\u24c9\u24d4\u24e7\u24e3" +
"\ud835\udc13\ud835\udc1e\ud835\udc31\ud835\udc2d" +
"\u24c9\u24d4\u24e7\u24e3", // a repetition for compression
VERBATIM = "\u24e5\u24d4\u24e1\u24d1\u24d0\u24e3\u24d8\u24dc",
COMPRESSED = "\u24d2\u24de\u24dc\u24df\u24e1\u24d4\u24e2\u24e2\u24d4\u24d3";
public static final byte[]
VBYTES = {
(byte)0x00, (byte)0x00, (byte)0x00, (byte)0x56, // chunk length
(byte)0x69, (byte)0x54, (byte)0x58, (byte)0x74, // chunk type "iTXt"
(byte)0x76, (byte)0x65, (byte)0x72, (byte)0x62,
(byte)0x61, (byte)0x74, (byte)0x69, (byte)0x6d, // keyword "verbatim"
(byte)0x00, // separator terminating keyword
(byte)0x00, // compression flag
(byte)0x00, // compression method, must be zero
(byte)0x78, (byte)0x2d, (byte)0x63, (byte)0x69,
(byte)0x72, (byte)0x63, (byte)0x6c, (byte)0x65,
(byte)0x64, // language tag "x-circled"
(byte)0x00, // separator terminating language tag
(byte)0xe2, (byte)0x93, (byte)0xa5, // '\u24e5'
(byte)0xe2, (byte)0x93, (byte)0x94, // '\u24d4'
(byte)0xe2, (byte)0x93, (byte)0xa1, // '\u24e1'
(byte)0xe2, (byte)0x93, (byte)0x91, // '\u24d1'
(byte)0xe2, (byte)0x93, (byte)0x90, // '\u24d0'
(byte)0xe2, (byte)0x93, (byte)0xa3, // '\u24e3'
(byte)0xe2, (byte)0x93, (byte)0x98, // '\u24d8'
(byte)0xe2, (byte)0x93, (byte)0x9c, // '\u24dc'
(byte)0x00, // separator terminating the translated keyword
(byte)0xe2, (byte)0x93, (byte)0x89, // '\u24c9'
(byte)0xe2, (byte)0x93, (byte)0x94, // '\u24d4'
(byte)0xe2, (byte)0x93, (byte)0xa7, // '\u24e7'
(byte)0xe2, (byte)0x93, (byte)0xa3, // '\u24e3'
(byte)0xf0, (byte)0x9d, (byte)0x90, (byte)0x93, // '\ud835\udc13'
(byte)0xf0, (byte)0x9d, (byte)0x90, (byte)0x9e, // '\ud835\udc1e'
(byte)0xf0, (byte)0x9d, (byte)0x90, (byte)0xb1, // '\ud835\udc31'
(byte)0xf0, (byte)0x9d, (byte)0x90, (byte)0xad, // '\ud835\udc2d'
(byte)0xe2, (byte)0x93, (byte)0x89, // '\u24c9'
(byte)0xe2, (byte)0x93, (byte)0x94, // '\u24d4'
(byte)0xe2, (byte)0x93, (byte)0xa7, // '\u24e7'
(byte)0xe2, (byte)0x93, (byte)0xa3, // '\u24e3'
(byte)0xb5, (byte)0xcc, (byte)0x97, (byte)0x56 // CRC
},
CBYTES = {
// we don't want to check the chunk length,
// as this might depend on implementation.
(byte)0x69, (byte)0x54, (byte)0x58, (byte)0x74, // chunk type "iTXt"
(byte)0x63, (byte)0x6f, (byte)0x6d, (byte)0x70,
(byte)0x72, (byte)0x65, (byte)0x73, (byte)0x73,
(byte)0x65, (byte)0x64, // keyword "compressed"
(byte)0x00, // separator terminating keyword
(byte)0x01, // compression flag
(byte)0x00, // compression method, 0=deflate
(byte)0x78, (byte)0x2d, (byte)0x63, (byte)0x69,
(byte)0x72, (byte)0x63, (byte)0x6c, (byte)0x65,
(byte)0x64, // language tag "x-circled"
(byte)0x00, // separator terminating language tag
// we don't want to check the actual compressed data,
// as this might depend on implementation.
};
/*
*/
public static void main(String[] args) throws Exception {
List argList = Arrays.asList(args);
if (argList.contains("truncate")) {
try {
runTest(false, true);
throw new AssertionError("Expect an error for truncated file");
}
catch (IIOException e) {
// expected an error for a truncated image file.
}
}
else {
runTest(argList.contains("dump"), false);
}
}
public static void runTest(boolean dump, boolean truncate)
throws Exception
{
String format = "javax_imageio_png_1.0";
BufferedImage img =
new BufferedImage(16, 16, BufferedImage.TYPE_INT_RGB);
ImageWriter iw = ImageIO.getImageWritersByMIMEType("image/png").next();
ByteArrayOutputStream os = new ByteArrayOutputStream();
ImageOutputStream ios = new MemoryCacheImageOutputStream(os);
iw.setOutput(ios);
IIOMetadata meta =
iw.getDefaultImageMetadata(new ImageTypeSpecifier(img), null);
DOMImplementationRegistry registry;
registry = DOMImplementationRegistry.newInstance();
DOMImplementation impl = registry.getDOMImplementation("XML 3.0");
Document doc = impl.createDocument(null, format, null);
Element root, itxt, entry;
root = doc.getDocumentElement();
root.appendChild(itxt = doc.createElement("iTXt"));
itxt.appendChild(entry = doc.createElement("iTXtEntry"));
entry.setAttribute("keyword", "verbatim");
entry.setAttribute("compressionFlag", "false");
entry.setAttribute("compressionMethod", "0");
entry.setAttribute("languageTag", "x-circled");
entry.setAttribute("translatedKeyword", VERBATIM);
entry.setAttribute("text", TEXT);
itxt.appendChild(entry = doc.createElement("iTXtEntry"));
entry.setAttribute("keyword", "compressed");
entry.setAttribute("compressionFlag", "true");
entry.setAttribute("compressionMethod", "0");
entry.setAttribute("languageTag", "x-circled");
entry.setAttribute("translatedKeyword", COMPRESSED);
entry.setAttribute("text", TEXT);
meta.mergeTree(format, root);
iw.write(new IIOImage(img, null, meta));
iw.dispose();
byte[] bytes = os.toByteArray();
if (dump)
System.out.write(bytes);
if (findBytes(VBYTES, bytes) < 0)
throw new AssertionError("verbatim block not found");
if (findBytes(CBYTES, bytes) < 0)
throw new AssertionError("compressed block not found");
int length = bytes.length;
if (truncate)
length = findBytes(VBYTES, bytes) + 32;
ImageReader ir = ImageIO.getImageReader(iw);
ByteArrayInputStream is = new ByteArrayInputStream(bytes, 0, length);
ImageInputStream iis = new MemoryCacheImageInputStream(is);
ir.setInput(iis);
meta = ir.getImageMetadata(0);
Node node = meta.getAsTree(format);
for (node = node.getFirstChild();
!"iTXt".equals(node.getNodeName());
node = node.getNextSibling());
boolean verbatimSeen = false, compressedSeen = false;
for (node = node.getFirstChild();
node != null;
node = node.getNextSibling()) {
entry = (Element)node;
String keyword = entry.getAttribute("keyword");
String translatedKeyword = entry.getAttribute("translatedKeyword");
String text = entry.getAttribute("text");
if ("verbatim".equals(keyword)) {
if (verbatimSeen) throw new AssertionError("Duplicate");
verbatimSeen = true;
if (!VERBATIM.equals(translatedKeyword))
throw new AssertionError("Wrong translated keyword");
if (!TEXT.equals(text))
throw new AssertionError("Wrong text");
}
else if ("compressed".equals(keyword)) {
if (compressedSeen) throw new AssertionError("Duplicate");
compressedSeen = true;
if (!COMPRESSED.equals(translatedKeyword))
throw new AssertionError("Wrong translated keyword");
if (!TEXT.equals(text))
throw new AssertionError("Wrong text");
}
else {
throw new AssertionError("Unexpected keyword");
}
}
if (!(verbatimSeen && compressedSeen))
throw new AssertionError("Missing chunk");
}
private static final int findBytes(byte[] needle, byte[] haystack) {
HAYSTACK: for (int h = 0; h <= haystack.length - needle.length; ++h) {
for (int n = 0; n < needle.length; ++n) {
if (needle[n] != haystack[h + n]) {
continue HAYSTACK;
}
}
return h;
}
return -1;
}
}