1 /*
   2  * Copyright (c) 2006, 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 6374379
  27  * @summary Verify that we can read zip file names > 255 chars long
  28  */
  29 
  30 import java.io.*;
  31 import java.util.jar.*;
  32 import java.util.zip.*;
  33 import java.util.Stack;
  34 
  35 public class ReadLongZipFileName {
  36     private static String entryName = "testFile.txt";;
  37 
  38     public static void realMain(String args[]) {
  39         String longDirName = "abcdefghijklmnopqrstuvwx"; // 24 chars.
  40         String jarFileName = "areallylargejarfilename.jar";    // 27 chars.
  41         File file = null;
  42         File myJarFile = null;
  43         int currentFileLength = 0;
  44         int minRequiredLength = 600; // long enough to definitely fail.
  45         Stack<File> directories = new Stack<File>();
  46 
  47         String filename = "." + File.separator;
  48         try {
  49             // Create a directory structure long enough that the filename will
  50             // put us over the minRequiredLength.
  51             do {
  52                 filename = filename + longDirName + File.separator;
  53                 file = new File(filename);
  54                 file.mkdir();
  55                 currentFileLength = file.getCanonicalPath().length();
  56                 directories.push(file);
  57             } while (currentFileLength < (minRequiredLength - jarFileName.length()));
  58 
  59             // Create a new Jar file: use jar instead of zip to make sure long
  60             // names work for both zip and jar subclass.
  61             filename = filename + jarFileName;
  62             JarOutputStream out = new JarOutputStream(
  63                 new BufferedOutputStream(
  64                     new FileOutputStream(filename.toString())));
  65             out.putNextEntry(new JarEntry(entryName));
  66             out.write(1);
  67             out.close();
  68             myJarFile = new File(filename.toString());
  69             currentFileLength = myJarFile.getCanonicalPath().length();
  70             if (!myJarFile.exists()) {
  71                 fail("Jar file does not exist.");
  72             }
  73         } catch (IOException e) {
  74             unexpected(e, "Problem creating the Jar file.");
  75         }
  76 
  77         try {
  78             JarFile readJarFile = new JarFile(myJarFile);
  79             JarEntry je = readJarFile.getJarEntry(entryName);
  80             check(je != null);
  81             DataInputStream dis = new DataInputStream(
  82                 readJarFile.getInputStream(je));
  83             byte val = dis.readByte();
  84             check(val == 1);
  85             try {
  86                 dis.readByte();
  87                 fail("Read past expected EOF");
  88             } catch (IOException e) {
  89                 pass();
  90             }
  91             readJarFile.close();
  92             pass("Opened Jar file for reading with a name " + currentFileLength
  93                  + " characters long");
  94         } catch (IOException e) {
  95             unexpected(e, "Test failed - problem reading the Jar file back in.");
  96         }
  97 
  98         if (myJarFile != null) {
  99             check(myJarFile.delete());
 100         }
 101 
 102         while (! directories.empty()) {
 103             File f = directories.pop();
 104             check(f.delete());
 105         }
 106     }
 107 
 108     //--------------------- Infrastructure ---------------------------
 109     static volatile int passed = 0, failed = 0;
 110     static void pass() {passed++;}
 111     static void pass(String msg) {System.out.println(msg); passed++;}
 112     static void fail() {failed++; Thread.dumpStack();}
 113     static void fail(String msg) {System.out.println(msg); fail();}
 114     static void unexpected(Throwable t) {failed++; t.printStackTrace();}
 115     static void unexpected(Throwable t, String msg) {
 116         System.out.println(msg); failed++; t.printStackTrace();}
 117     static void check(boolean cond) {if (cond) pass(); else fail();}
 118     static void equal(Object x, Object y) {
 119         if (x == null ? y == null : x.equals(y)) pass();
 120         else fail(x + " not equal to " + y);}
 121     public static void main(String[] args) throws Throwable {
 122         try {realMain(args);} catch (Throwable t) {unexpected(t);}
 123         System.out.println("\nPassed = " + passed + " failed = " + failed);
 124         if (failed > 0) throw new AssertionError("Some tests failed");}
 125 }