Topic on Project:Support desk

Resolved. To enable oft uploads, /includes/libs/mime/mime.types should be modified from application/sla stl to application/sla stl oft, in addition to adding .oft files to the list of supported extensions ($wgFileExtensions).

Hello. On my private wiki, I have enabled the uploading of Microsoft Outlook 2016 Email Templates (.oft) using $wgFileExtensions. But when uploading an oft file, I'm faced with the error File extension ".oft" does not match the detected MIME type of the file (application/sla). Is there a way to fix or overcome this? Or perhaps a way to skip MIME checks for oft files? It may be worth mentioning that the .oft email template contains a PDF attachment. Thanks for any help.

You can disable the verification by setting $wgVerifyMimeType to false. You can also extend the allowed types by using $wgMimeTypeFile.

Thanks for the reply @Ammarpad. I would like to disable MIME type check only for .oft files. Is that possible? If so, would you be able to help me with the code for that please?

I am not sure, but on quick look it seems not possible**. You should either opt for verification or not. You can of course also add the type to the file for $wgMimeTypeFile so that the verification will pass. For me, that seems more effective and simple thing to do.

**By 'not possible' I mean there's no easy way to do this, since there's no hook that trivially allows that, and I don't think you'd want maintain a hacked local copy of UploadBase.php.

Oh okay. How do I add the type to the file?

After reading further, I finally found a non-hacky solution to allow uploads of .oft files:

1. If not already done, add .oft files to the list of supported extensions ( $wgFileExtensions)
2. In MediaWiki 1.34.2, edit /includes/libs/mime/mime.types and modify application/sla stl to application/sla stl oft. (As far as I know, this directory is changed for 1.35+)

That's it. Without lowering and amending security, I can now upload .oft files.

Hope this helps others struggling with this.