Some file formats allow extracting when file is not an archive

Interesting, I wonder if that's a bug in the PHP mimetype detection code...

The funny thing is that it's not entirely wrong, these files are zip files after all :)

There is a forum post at http://mahara.org/interaction/forum/topic.php?id=3791#post16704 that alludes to the same problem. Though she write of Adobe Captivate files (which I guess are also XML plus content files) and MS Office.

Also mentioned on this forum thread: http://mahara.org/interaction/forum/topic.php?id=4155

I can't reproduce it. Docx is treated as normal document file. This might be related to php version or OS. I am on Debian Squeeze, Apache 2.2.16-6+squeeze4, PHP 5.3.3-7+squeeze3

I can't reproduce this, however I suspect this patch may fix the issue.

Can someone who can reproduce the issue please test it?

Melissa, this only happens when you upload a zip file which includes docx etc. and then you extract the files and docx is then seen as archive. Not when you upload a docx on its own.

If this bug is still open...

This problem seems to be related to multiple issues:

Mahara (as of 1.6.2) Issue:
1. The docx, pptx, xlsx mime types are not included in the 'artefact_file_mime_types' table in the database.

Web Server Issue:
2. The web server (Apache or IIS) may need to be configured to send appropriate mime types for docx, pptx, xlsx.

Web Browser Issue:
3. IE8 is known to have issues with docx, pptx, xlsx mime types.

Sorry for the debian distribution addition-deletion. I am using debian, but I'm not using the debian packaged Mahara software. So I don't know if it affects the default debian package.

I think I found the file that needs updating...

htdocs/artefact/file/filetypes.xml

and add the following for MS OOXML compatiability...

    <filetype>
        <description>docx</description>
        <mimetypes>
            <mimetype>application/vnd.openxmlformats-officedocument.wordprocessingml.document</mimetype>
        </mimetypes>
    </filetype>
    <filetype>
        <description>pptx</description>
        <mimetypes>
            <mimetype>application/vnd.openxmlformats-officedocument.presentationml.presentation</mimetype>
        </mimetypes>
    </filetype>
    <filetype>
        <description>xlsx</description>
        <mimetypes>
            <mimetype>application/vnd.openxmlformats-officedocument.spreadsheetml.sheet</mimetype>
        </mimetypes>
    </filetype>

I can't replicate this on Mahara 1.6 on my local machine.

related: bug #1193158

This problem might also be related to:

https://bugs.launchpad.net/mahara/+bug/1249166
https://bugs.launchpad.net/mahara/+bug/1249858

Where the mimetype is incorrectly set in the browser's registry and then mahara is not correctly sniffing out the true mimetype

I can't replicate the problem. I tried uploading docx files as part of a .zip and .tar archive which also contained other file formats, and in both cases Mahara treated the docx correctly as a single file. (Using master branch of Mahara, Firefox Quantum 58.0, php 7.1.13)

It's still a problem with .key files, Mac Keynote files, for example.

Setting this to "Won't fix" because it's a minor issue and someone trying to extract the file in their own files area would see that it would alter the files.