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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
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108
test/jdk/java/util/zip/ZipFile/ManyEntries.java Normal file
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/*
* Copyright (c) 2005, 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 4770745 4828461
* @summary open zip files with more than 64k entries
* @run main/timeout=600 ManyEntries
* @author Martin Buchholz
*/
import java.util.*;
import java.util.zip.*;
import java.io.*;
public class ManyEntries {
public static void main(String[] args) throws Exception {
boolean runMoreTests = args.length > 0;
int[] sizes = (runMoreTests ?
new int[]{1, 2, 42, 65534, 65535, 65536, 65537, 68000} :
new int[]{1, 2, 42, 68000});
int[] methods = {ZipEntry.STORED, ZipEntry.DEFLATED};
for (int size : sizes)
for (int method : methods)
test(size, method);
}
// JDK doesn't like having zip file contents changed at runtime
static int uniquifier = 42;
static void test(int N, int method) throws Exception {
System.out.println("N="+N+", method="+method);
long time = System.currentTimeMillis() / 2000 * 2000;
CRC32 crc32 = new CRC32();
File zipFile = new File(++uniquifier + ".zip");
try {
zipFile.delete();
try (FileOutputStream fos = new FileOutputStream(zipFile);
BufferedOutputStream bos = new BufferedOutputStream(fos);
ZipOutputStream zos = new ZipOutputStream(bos))
{
for (int i = 0; i < N; i++) {
ZipEntry e = new ZipEntry("DIR/"+i);
e.setMethod(method);
e.setTime(time);
if (method == ZipEntry.STORED) {
e.setSize(1);
crc32.reset();
crc32.update((byte)i);
e.setCrc(crc32.getValue());
} else {
e.setSize(0);
e.setCrc(0);
}
zos.putNextEntry(e);
zos.write(i);
}
}
try (ZipFile zip = new ZipFile(zipFile)) {
if (! (zip.size() == N))
throw new Exception("Bad ZipFile size: " + zip.size());
Enumeration entries = zip.entries();
for (int i = 0; i < N; i++) {
if (i % 1000 == 0) {System.gc(); System.runFinalization();}
if (! (entries.hasMoreElements()))
throw new Exception("only " + i + " elements");
ZipEntry e = (ZipEntry)entries.nextElement();
if (! (e.getSize() == 1))
throw new Exception("bad size: " + e.getSize());
if (! (e.getName().equals("DIR/" + i)))
throw new Exception("bad name: " + i);
if (! (e.getMethod() == method))
throw new Exception("getMethod="+e.getMethod()+", method=" + method);
if (! (e.getTime() == time))
throw new Exception("getTime="+e.getTime()+", time=" + time);
if (! (zip.getInputStream(e).read() == (i & 0xff)))
throw new Exception("Bad file contents: " + i);
}
if (entries.hasMoreElements())
throw new Exception("too many elements");
}
} finally {
zipFile.delete();
}
}
}