PPTX and other formats are badly recognized and downloaded with .zip extenstions

[dusatvoj]

• Gitea version (or commit ref): 1.14.0
• Git version: 2.20.1
• Operating system: Debian 10
• Database (use [x]):
  • PostgreSQL
  • MySQL
  • MSSQL
  • SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • Yes (provide example URL)
  • No
• Log gist:

Description

Some people in our company have a problem when they upload pptx or docx or another OfficeOpenXML. It's downloaded with .zip extension bcs it's badly recognized. It's not happening in linux but in windows because it's zip mime type (some shitty windows stuff but it's annoying for them when they download presentation.pptx.zip). In linux is downloaded as pptx but with zip mime type (extension does not change)
I can understand why it's happening but I can't understand why mime type is not set by extension.

Screenshots

[sapk]

We use go standard lib mime.TypeByExtension in Gitea to determine mime types on server side.
It is based on the host configuration: https://golang.org/src/mime/type.go?s=2843:2882#L91

Maybe you can add those mime types to the host list (and restart gitea after )?

On our side we could maybe add some extra not available on most OS distribution ?

[dusatvoj]

I have Debian 10 on server and mime.types has extension pptx defined as below.

application/vnd.openxmlformats-officedocument.presentationml.presentation       pptx

But pptx is downloaded as zip mime type (screenshot below) ...

Tested in latest firefox on linux

[zeripath]

This can now be solved with #15133

[techknowlogick]

Closing per linked PR