[TIKA-3968] Reconstruct embedded file names from associated emf files within docx files

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.8.0
• Assignee: Unassigned
• Reporter: Tim Allison
• Created: 06/Feb/23 18:54
• Updated: 09/May/23 17:08
• Resolved: 07/Feb/23 19:26

Description

I'm starting to see among several users communicating with me privately that Microsoft has changed their basic behavior for files attached to at least docx files (possibly pptx and xlsx?). Rather than storing the original file name, the file associates an EMF file with an attachment. The filename that a human sees in the application is spelled/painted out in the EMF file, but does NOT exist in any of the XML.

I'm attaching an example file.

In fixing this issue, I've noticed that some of our fairly old docx files use this technique. Not clear that it is a new thing, just happen to be hearing about it from several people.

I'd like to thank Chetan Bikire (chetab) for raising this issue and sharing the example document which we've added to our unit tests.

Issue Links

• links to: GitHub Pull Request #948