[COMPRESS-538] ZipEntry created using ZipArchiveOutputStream(File) constructor adds 'ZIP64 Extended Information Extra Field' even when zip64 is not required.

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.8, 1.9, 1.20
• Component/s: Archivers
• Assignee: Peter Lee
• Reporter: Pritesh
• Created: 16/Jun/20 03:45
• Updated: 03/Jul/20 16:01

Description

When creating a zip file using ZipArchiveOutputStream(File) constructor each entry get an extra `Zip64ExtendedInformationExtraField` header which shouldn't be there.

 

The issue can be reproduced using below code sample

    public static void main(String[] args) throws IOException {
        // Create file
        final File file = File.createTempFile("apache_", ".zip");
        try ( ZipArchiveOutputStream zos = new ZipArchiveOutputStream(file)) {
            zos.putArchiveEntry(new ZipArchiveEntry("TextFile1.txt"));
            zos.closeArchiveEntry();
        }

        // List Headers File
        final ZipFile zipFile = new ZipFile(file);
        final Enumeration<? extends ZipArchiveEntry> entries = zipFile.getEntries();
        while (entries.hasMoreElements()) {
            final ZipArchiveEntry entry = entries.nextElement();
            for (ZipExtraField zipExtraField : entry.getExtraFields()) {
                System.out.println("EntryName:" + entry.getName() + " Header: "+ zipExtraField.getHeaderId().getValue()); // Header shouldn't be present.
            }
        }
    }