zip files created with an own cloud service are ingested as is

[jo-pol]

What steps does it take to reproduce the issue?

• download multiple files from an own cloud service
  for example greetings.zip and shapes.zip (the individual shape file contain garbage, it is about rezipping)
• upload the zip into a dataset
• the zip is ingested as is with a warning message
• unzip an rezip the files before upload and the result is as expected

Which version of Dataverse are you using?

It happens both on 6.2 and 6.4

Any related open or closed issues to this bug report?
Not sure but replacing ZipInputStream with ZipFile might influence the following issues
#7507
#7352
#2482
#10591

Screenshots:

Current result on the left, on the right expected result with the files attached above after saving the changes

expected:

Are you thinking about creating a pull request for this issue?
yes

[qqmyers]

FWIW: I don't know the details of what owncloud is doing, but in discussion with @jo-pol, it sounds like the current code gives an "only DEFLATED entries can have EXT descriptor" error, presumably because owncloud is using an option for zip that is inconsistent with the ZipInputStream processing.