[COMPRESS-621] ZipFile does not support prepending additional data to the zip content

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.21
• Fix Version/s: 1.23.0
• Component/s: Archivers
• Assignee: Unassigned
• Reporter: Glavo
• Created: 14/May/22 07:54
• Updated: 08/Dec/22 01:56
• Resolved: 08/Dec/22 01:56

Description

In general, Zip files support placing arbitrary content before their body without affecting their compliance.

Here is an example:

https://github.com/huanghongxun/HMCL/releases/download/v3.5.2.218/HMCL-3.5.2.218.exe

 

This is actually a jar file, but we prepend an exe launcher to it, so it can be used both as a jar and as an exe.

java.util.zip.ZipFile can open and read it normally, but org.apache.commons.compress.archivers.zip.ZipFile can open it but cannot read any entries.