[imp] preview of attached files in imp

[Gary]

Quoting cjdl01 <cjdl01 at brokensolstice.com>:

> Quoting cjdl01 <cjdl01 at brokensolstice.com>:
>
>> Quoting Michael M Slusarz <slusarz at horde.org>:
>>
>>> Quoting Petr ?erník <cernik at fel.cvut.cz>:
>>>
>>>> Hi all,
>>>>
>>>> i added in horde5 to mime_driver config file appropriate mime  
>>>> type for docx and xlsx. It works very well for attached files in  
>>>> incoming emails. But preview for attached files in compose  
>>>> windows for docx/xlsx doesnt work (for doc/xls yes). It's a bug  
>>>> or in compose windows (new mail) are used different functions or  
>>>> settings?
>>>>
>>>> It says:
>>>>
>>>> Could not auto-determine data type.
>>>
>>> Exactly what the error message implies: IMP is unable to determine  
>>> the content-type of the attachment so there is no way the  
>>> appropriate viewer can be used.  This often happens because  
>>> browsers won't report a content-type when attaching a file from  
>>> the local system, so IMP is forced to try to auto-detect the  
>>> contents (which does not work 100% of the time).
>>>
>>> michael
>>
>>
>> Looks like I'm having this issue too.  All attachments have 100%  
>> failure.  Is there anything we can do here Michael, to help imp  
>> know what the attachment is?  I never had this issue in imp5, it  
>> has only cropped up since the upgrade.  It occurs in Firefox,  
>> Chrome, Internet explorer, Konqueror, Opera and Safari (on windows  
>> and linux), so whatever the browser is supposed to be doing to  
>> define the mime-type, none of them are doing it.  Is their some  
>> package in pear or horde (or whatever) that horde uses to determine  
>> the the content type? Maybe it needs reinstalling or tweaking...
>>
>> Thanks.
>>
>> -Chris
>
> Okay... I have been poking around with this some more.  I noticed  
> that my path to the magic db is set to /usr/share/misc/magic.  This  
> is a directory on my Horde server, so it is valid in that sense.   
> However, the directory it points to is empty.  I do not know if that  
> is normal or not.  I also looked at /etc/magic, which is a file.   
> However, aside from a couple innocuous comments, the file is empty.   
> I likewise do not know if this is normal or not.
>
> But, despite this, magic seems to work as expected from the shell.   
> It accurately guesses the file type of any file I throw at it.  But  
> if I use the PHP shell in horde (with a context of either Horde or  
> IMP), I get nothing, even after verifying that the file does exit,  
> and that the mime type is correctly ascertained on the command line  
> using the 'file' command.
>
> <?php
> require_once 'MIME/Type.php';
>
> $filename = '/home/me/MyDocs/file.ext';
> echo MIME_Type::autoDetect($filename);
> ?>
>
> Returns Nothing.
>
>
>
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On my ubuntu system the magic file is /usr/share/file/magic.mgc, this  
is a compiled binary magic file. There is a link pointing to it at  
/usr/share/misc/magic.mgc

I'm using the latest imp and, although my attachment requirements are  
limited to image files, I haven't had any issues. Are you sure you  
have all the required php modules installed? Just a thought.