| /* |
| * Copyright (c) 2003, 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 |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* @test |
| @bug 4334846 |
| @summary Make sure zip file comments of various sizes can be written. |
| @author Martin Buchholz |
| */ |
| |
| import java.io.*; |
| |
| import java.util.zip.ZipEntry; |
| import java.util.zip.ZipFile; |
| import java.util.zip.ZipOutputStream; |
| |
| public class Comment { |
| private static final String entryName = "entryName"; |
| private static final String entryContents = "entryContents"; |
| private static final int commentMaxLength = 0xFFFF; |
| private static final int [] commentLengths |
| = { 0, 1, 32768, commentMaxLength - 1, commentMaxLength }; |
| |
| public static void main(String argv[]) |
| throws Exception |
| { |
| for (int i = 0; i < commentLengths.length; ++i) { |
| int commentLength = commentLengths[i]; |
| String comment = buildComment(commentLength); |
| String name = "Test" + commentLength + ".zip"; |
| writeZipFile(name, comment); |
| verifyZipFile(name, comment); |
| new File(name).delete(); |
| System.out.println(commentLength + ": successful"); |
| } |
| } |
| |
| private static void writeZipFile(String name, String comment) |
| throws IOException |
| { |
| try (FileOutputStream fos = new FileOutputStream(name); |
| ZipOutputStream zos = new ZipOutputStream(fos)) |
| { |
| zos.setComment(comment); |
| ZipEntry ze = new ZipEntry(entryName); |
| ze.setMethod(ZipEntry.DEFLATED); |
| zos.putNextEntry(ze); |
| new DataOutputStream(zos).writeUTF(entryContents); |
| zos.closeEntry(); |
| } |
| } |
| |
| private static void verifyZipFile(String name, String comment) |
| throws Exception |
| { |
| // Check that Zip entry was correctly written. |
| try (ZipFile zipFile = new ZipFile(name)) { |
| ZipEntry zipEntry = zipFile.getEntry(entryName); |
| InputStream is = zipFile.getInputStream(zipEntry); |
| String result = new DataInputStream(is).readUTF(); |
| if (!result.equals(entryContents)) |
| throw new Exception("Entry contents corrupted"); |
| } |
| |
| try (RandomAccessFile file = new RandomAccessFile(name, "r")) { |
| // Check that comment length was correctly written. |
| file.seek(file.length() - comment.length() |
| - ZipFile.ENDHDR + ZipFile.ENDCOM); |
| int b1 = file.readUnsignedByte(); |
| int b2 = file.readUnsignedByte(); |
| if (b1 + (b2 << 8) != comment.length()) |
| throw new Exception("Zip file comment length corrupted"); |
| |
| // Check that comment was correctly written. |
| file.seek(file.length() - comment.length()); |
| byte [] bytes = new byte [comment.length()]; |
| file.readFully(bytes); |
| if (! comment.equals(new String(bytes, "UTF8"))) |
| throw new Exception("Zip file comment corrupted"); |
| } |
| } |
| |
| private static String buildComment(int length) { |
| StringBuffer result = new StringBuffer(); |
| while (result.length() < length) { |
| /* Endhdr is 22 bytes long, so this pattern makes it easy |
| * to see if it is copied correctly */ |
| result.append("abcdefghijklmnopqrstuvABCDEFGHIJKLMNOPQRSTUV"); |
| } |
| String string = result.toString(); |
| string = string.substring(string.length() - length); |
| return string; |
| } |
| } |