[Using Sakai] File type for uploaded files

[Norman Danner]

Thanks; I should have thought of my own browser as a third option for 
fixing this.

	- Norman

On 2/20/13 11:05 AM, Matthew Jones wrote:
> Sakai trusts the browser first for determining mime type and some browsers
> give the wrong type. This seems to happen really often with PDF files. If
> the browser doesn't supply the mime, Sakai then it falls back secondarily
> on the extension. Making the order configurable (extension first, browser
> second) was discussed as a a possible feature as well as adding in a
> library to detect the type, but it's not something that anyone has worked
> on yet.
>
> https://jira.sakaiproject.org/browse/KNL-101
>
> On Wed, Feb 20, 2013 at 11:01 AM, Mike Jennings <mike_jennings at unc.edu>wrote:
>
>> We have seen this issue happen when the browser mime types in firefox
>> that have been corrupted for some reason.
>>
>> We use this simple cgi/html upload checker to see what mime type is
>> associated with the upload
>>
>> ==> upload.cgi <==
>> #!/bin/sh
>> echo 'Content-Type: text/plain'
>> echo
>> exec 2>&1
>> set -x
>> grep -aim1 content-type
>>
>> ==> upload.html <==
>> <form enctype="multipart/form-data" action="upload.cgi" method="POST">
>>       <input name="file" type="file" />
>>       <input type="submit" />
>> </form>
>>
>> In firefox you can reset your memtypes by delete the mimeTypes.rdf file
>> from the users firefox profile.
>>
>> Mike
>>
>>
>>
>>
>>
>> On 02/20/2013 10:47 AM, Norman Danner wrote:
>>> I have one general question:  how do I assign default file types for
>>> files that I upload to Sakai?
>>>
>>> More specifically, here are two cases that have come up recently.
>>>
>>> Occasionally I upload a PDF file, and it is marked with a file type of
>>> application/binary.  This doesn't happen with all PDF files.  Certainly
>>> all of them have filenames of the form XXX.pdf.
>>>
>>> Even more annoying (and special-case) is that I upload SML (Standard ML)
>>> source code files, and those are assigned type application/binary.
>>> Obviously these are not standard files, but I'd like them to default to
>>> text/plain.
>>>
>>> Of course, I can set the file type manually after uploading by editing
>>> the file details, but that is a real pain.  And apparently that data
>>> isn't preserved with the file; if I upload a new version of the file, I
>>> have to manually set the file type again.
>>>
>>> Can setting default file types by filename extension be done via Sakai
>>> properties?  Is it something I have to configure in Tomcat?  Something
>> else?
>>>
>>>        - Norman Danner
>>>
>>
>> --
>> =========================================
>> Mike Jennings
>> Teaching and Learning Developer
>> T: 919.843.5013
>> E: mike_jennings at unc.edu
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>

-- 
Norman Danner - ndanner at wesleyan.edu - http://ndanner.web.wesleyan.edu
Department of Mathematics and Computer Science - Wesleyan University