J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* @test |
| 25 | @bug 4334846 |
| 26 | @summary Make sure zip file comments of various sizes can be written. |
| 27 | @author Martin Buchholz |
| 28 | */ |
| 29 | |
| 30 | import java.io.*; |
| 31 | |
| 32 | import java.util.zip.ZipEntry; |
| 33 | import java.util.zip.ZipFile; |
| 34 | import java.util.zip.ZipOutputStream; |
| 35 | |
| 36 | public class Comment { |
| 37 | private static final String entryName = "entryName"; |
| 38 | private static final String entryContents = "entryContents"; |
| 39 | private static final int commentMaxLength = 0xFFFF; |
| 40 | private static final int [] commentLengths |
| 41 | = { 0, 1, 32768, commentMaxLength - 1, commentMaxLength }; |
| 42 | |
| 43 | public static void main(String argv[]) |
| 44 | throws Exception |
| 45 | { |
| 46 | for (int i = 0; i < commentLengths.length; ++i) { |
| 47 | int commentLength = commentLengths[i]; |
| 48 | String comment = buildComment(commentLength); |
| 49 | String name = "Test" + commentLength + ".zip"; |
| 50 | writeZipFile(name, comment); |
| 51 | verifyZipFile(name, comment); |
| 52 | new File(name).delete(); |
| 53 | System.out.println(commentLength + ": successful"); |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | private static void writeZipFile(String name, String comment) |
| 58 | throws IOException |
| 59 | { |
| 60 | ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(name)); |
| 61 | zos.setComment(comment); |
| 62 | ZipEntry ze = new ZipEntry(entryName); |
| 63 | ze.setMethod(ZipEntry.DEFLATED); |
| 64 | zos.putNextEntry(ze); |
| 65 | new DataOutputStream(zos).writeUTF(entryContents); |
| 66 | zos.closeEntry(); |
| 67 | zos.close(); |
| 68 | } |
| 69 | |
| 70 | private static void verifyZipFile(String name, String comment) |
| 71 | throws Exception |
| 72 | { |
| 73 | // Check that Zip entry was correctly written. |
| 74 | ZipFile zipFile = new ZipFile(name); |
| 75 | ZipEntry zipEntry = zipFile.getEntry(entryName); |
| 76 | InputStream is = zipFile.getInputStream(zipEntry); |
| 77 | String result = new DataInputStream(is).readUTF(); |
| 78 | if (!result.equals(entryContents)) |
| 79 | throw new Exception("Entry contents corrupted"); |
| 80 | |
| 81 | // Check that comment length was correctly written. |
| 82 | RandomAccessFile file = new RandomAccessFile(name, "r"); |
| 83 | file.seek(file.length() - comment.length() |
| 84 | - ZipFile.ENDHDR + ZipFile.ENDCOM); |
| 85 | int b1 = file.readUnsignedByte(); |
| 86 | int b2 = file.readUnsignedByte(); |
| 87 | if (b1 + (b2 << 8) != comment.length()) |
| 88 | throw new Exception("Zip file comment length corrupted"); |
| 89 | |
| 90 | // Check that comment was correctly written. |
| 91 | file.seek(file.length() - comment.length()); |
| 92 | byte [] bytes = new byte [comment.length()]; |
| 93 | file.readFully(bytes); |
| 94 | if (! comment.equals(new String(bytes, "UTF8"))) |
| 95 | throw new Exception("Zip file comment corrupted"); |
| 96 | } |
| 97 | |
| 98 | private static String buildComment(int length) { |
| 99 | StringBuffer result = new StringBuffer(); |
| 100 | while (result.length() < length) { |
| 101 | /* Endhdr is 22 bytes long, so this pattern makes it easy |
| 102 | * to see if it is copied correctly */ |
| 103 | result.append("abcdefghijklmnopqrstuvABCDEFGHIJKLMNOPQRSTUV"); |
| 104 | } |
| 105 | String string = result.toString(); |
| 106 | string = string.substring(string.length() - length); |
| 107 | return string; |
| 108 | } |
| 109 | } |