--- old/src/java.desktop/share/classes/javax/imageio/ImageIO.java 2016-04-05 20:21:16.290845050 +0530 +++ new/src/java.desktop/share/classes/javax/imageio/ImageIO.java 2016-04-05 20:21:16.110755056 +0530 @@ -1294,7 +1294,8 @@ * * @exception IllegalArgumentException if {@code input} is * {@code null}. - * @exception IOException if an error occurs during reading. + * @exception IOException if an error occurs during reading or when not + * able to create required ImageInputStream. */ public static BufferedImage read(File input) throws IOException { if (input == null) { @@ -1344,7 +1345,8 @@ * * @exception IllegalArgumentException if {@code input} is * {@code null}. - * @exception IOException if an error occurs during reading. + * @exception IOException if an error occurs during reading or when not + * able to create required ImageInputStream. */ public static BufferedImage read(InputStream input) throws IOException { if (input == null) { @@ -1352,6 +1354,9 @@ } ImageInputStream stream = createImageInputStream(input); + if (stream == null) { + throw new IIOException("Can't create an ImageInputStream!"); + } BufferedImage bi = read(stream); if (bi == null) { stream.close(); @@ -1384,7 +1389,8 @@ * * @exception IllegalArgumentException if {@code input} is * {@code null}. - * @exception IOException if an error occurs during reading. + * @exception IOException if an error occurs during reading or when not + * able to create required ImageInputStream. */ public static BufferedImage read(URL input) throws IOException { if (input == null) { @@ -1398,6 +1404,14 @@ throw new IIOException("Can't get input stream from URL!", e); } ImageInputStream stream = createImageInputStream(istream); + if (stream == null) { + /* close the istream when stream is null so that if user has + * given filepath as URL he can delete it, otherwise stream will + * be open to that file and he will not be able to delete it. + */ + istream.close(); + throw new IIOException("Can't create an ImageInputStream!"); + } BufferedImage bi; try { bi = read(stream); @@ -1510,7 +1524,8 @@ * * @exception IllegalArgumentException if any parameter is * {@code null}. - * @exception IOException if an error occurs during writing. + * @exception IOException if an error occurs during writing or when not + * able to create required ImageOutputStream. */ public static boolean write(RenderedImage im, String formatName, @@ -1518,7 +1533,6 @@ if (output == null) { throw new IllegalArgumentException("output == null!"); } - ImageOutputStream stream = null; ImageWriter writer = getWriter(im, formatName); if (writer == null) { @@ -1528,13 +1542,11 @@ return false; } - try { - output.delete(); - stream = createImageOutputStream(output); - } catch (IOException e) { - throw new IIOException("Can't create output stream!", e); + output.delete(); + ImageOutputStream stream = createImageOutputStream(output); + if (stream == null) { + throw new IIOException("Can't create an ImageOutputStream!"); } - try { return doWrite(im, writer, stream); } finally { @@ -1562,7 +1574,8 @@ * * @exception IllegalArgumentException if any parameter is * {@code null}. - * @exception IOException if an error occurs during writing. + * @exception IOException if an error occurs during writing or when not + * able to create required ImageOutputStream. */ public static boolean write(RenderedImage im, String formatName, @@ -1570,13 +1583,10 @@ if (output == null) { throw new IllegalArgumentException("output == null!"); } - ImageOutputStream stream = null; - try { - stream = createImageOutputStream(output); - } catch (IOException e) { - throw new IIOException("Can't create output stream!", e); + ImageOutputStream stream = createImageOutputStream(output); + if (stream == null) { + throw new IIOException("Can't create an ImageOutputStream!"); } - try { return doWrite(im, getWriter(im, formatName), stream); } finally { --- /dev/null 2016-04-04 12:45:02.927578000 +0530 +++ new/test/javax/imageio/stream/NullStreamCheckTest.java 2016-04-05 20:21:16.659029037 +0530 @@ -0,0 +1,202 @@ +/* + * Copyright (c) 2016, 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 + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +/** + * @test + * @bug 8044289 + * @summary Test verifies that when some of the read() and write() methods + * are not able to get stream from createImageInputStream() and + * createImageOutputStream() are we doing null check for stream + * and throwing IOException as per specification. + * @run main NullStreamCheckTest + */ + +import java.awt.image.BufferedImage; +import java.io.File; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.net.MalformedURLException; +import java.net.URL; +import javax.imageio.ImageIO; +import javax.imageio.spi.IIORegistry; +import javax.imageio.spi.ImageInputStreamSpi; +import javax.imageio.spi.ImageOutputStreamSpi; + +public class NullStreamCheckTest { + + // get ImageIORegistry default instance. + private static final IIORegistry localRegistry = IIORegistry. + getDefaultInstance(); + // stream variables needed for input and output. + static LocalOutputStream outputStream = new LocalOutputStream(); + static LocalInputStream inputStream = new LocalInputStream(); + + static final int width = 50, height = 50; + + // input and output BufferedImage needed while read and write. + static BufferedImage inputImage = new BufferedImage(width, height, + BufferedImage.TYPE_INT_ARGB); + + // creates test file needed for read and write in local directory. + private static File createTestFile(String name) throws IOException { + String sep = System.getProperty("file.separator"); + String dir = System.getProperty("test.src", "."); + String filePath = dir+sep; + File directory = new File(filePath); + File tmpTestFile = File.createTempFile(name, ".png", directory); + directory.delete(); + return tmpTestFile; + } + + /* if we catch expected IOException message return + * false otherwise return true. + */ + private static boolean verifyOutputExceptionMessage(IOException ex) { + String message = ex.getMessage(); + return (!message.equals("Can't create an ImageOutputStream!")); + } + + /* if we catch expected IOException message return + * false otherwise return true. + */ + private static boolean verifyInputExceptionMessage(IOException ex) { + String message = ex.getMessage(); + return (!message.equals("Can't create an ImageInputStream!")); + } + + private static void verifyFileWrite() throws IOException { + File outputTestFile = createTestFile("outputTestFile"); + try { + ImageIO.write(inputImage, "png", outputTestFile); + } catch (IOException ex) { + if (verifyOutputExceptionMessage(ex)) + throw ex; + } finally { + outputTestFile.delete(); + } + } + + private static void verifyStreamWrite() throws IOException { + try { + ImageIO.write(inputImage, "png", outputStream); + } catch (IOException ex) { + if (verifyOutputExceptionMessage(ex)) + throw ex; + } finally { + try { + outputStream.close(); + } catch (IOException ex) { + throw ex; + } + } + } + + private static void verifyFileRead() throws IOException { + File inputTestFile = createTestFile("inputTestFile"); + try { + ImageIO.read(inputTestFile); + } catch (IOException ex) { + if (verifyInputExceptionMessage(ex)) + throw ex; + } finally { + inputTestFile.delete(); + } + } + + private static void verifyStreamRead() throws IOException { + try { + ImageIO.read(inputStream); + } catch (IOException ex) { + if (verifyInputExceptionMessage(ex)) + throw ex; + } finally { + try { + inputStream.close(); + } catch (IOException ex) { + throw ex; + } + } + } + + private static void verifyUrlRead() throws IOException { + URL url; + File inputTestUrlFile = createTestFile("inputTestFile"); + try { + try { + url = inputTestUrlFile.toURI().toURL(); + } catch (MalformedURLException ex) { + throw ex; + } + + try { + ImageIO.read(url); + } catch (IOException ex) { + if (verifyInputExceptionMessage(ex)) + throw ex; + } + } finally { + inputTestUrlFile.delete(); + } + } + + public static void main(String[] args) throws IOException, + MalformedURLException { + + /* deregister ImageOutputStreamSpi so that we creatImageOutputStream + * returns null while writing. + */ + localRegistry.deregisterAll(ImageOutputStreamSpi.class); + /* verify possible ImageIO.write() scenario's for null stream output + * from createImageOutputStream() API in ImageIO class. + */ + verifyFileWrite(); + verifyStreamWrite(); + + /* deregister ImageInputStreamSpi so that we creatImageInputStream + * returns null while reading. + */ + localRegistry.deregisterAll(ImageInputStreamSpi.class); + /* verify possible ImageIO.read() scenario's for null stream output + * from createImageInputStream API in ImageIO class. + */ + verifyFileRead(); + verifyStreamRead(); + verifyUrlRead(); + } + + static class LocalOutputStream extends OutputStream { + + @Override + public void write(int i) throws IOException { + } + } + + static class LocalInputStream extends InputStream { + + @Override + public int read() throws IOException { + return 0; + } + } +}