RE: [users@httpd] ext_filter + negotiation?

[Ben Davies <be...@stickyeyes.com>]

Don't know if this helps, but I did the following:

ExtFilterDefine TranscodeMP3 intype="audio/flac" outtype="audio/mp3"
cmd="flac2mp3"

<LocationMatch "^/(.*).mp3$">
	SetOutputFilter TranscodeMP3
</LocationMatch>
AliasMatch "^/(.*)\.mp3$" /flac/lib/$1.flac

The above means that if anyone requests "mysong.mp3", they get the file
"mysong.flac" filtered through my flac2mp3 script which converts it to mp3
(via LAME) on the fly.

I didn't need to use Multiviews in the end.

Dunno if that helps, but it took me a while to realise I didn't need
multiviews.

Cheers,

Ben

Ben Davies | Lead Developer | Stickyeyes
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-----Original Message-----
From: Jonathan H N Chin [mailto:jc254@newton.cam.ac.uk] 
Sent: 30 May 2008 22:12
To: users@httpd.apache.org
Subject: Re: [users@httpd] ext_filter + negotiation?

nick wrote:
> Jonathan H N Chin <jc...@newton.ac.uk> wrote:
> 
> > Using debian's apache 2.0.54 and 2.2.3, I define a filter:
> > 
> > 	ExtFilterDefine test \
> > 		mode=output intype=text/html \
> > 		cmd="/usr/bin/perl -pe 's/foo/bar/g'"
> 
> Presumably that's just illustrative (if that's what you want
> to do, then using ext_filter for it is a terrible solution).

Yes.


> > I use it with:
> > 	DocumentRoot /export/www
> > 	<Directory /export/www>
> > 		Options Indexes FollowSymLinks MultiViews
> > 	</Directory>
> > 	<Location />
> > 		SetOutputFilter test
> > 	</Location>
> 
> As a general rule, using <Location> with local contents
> is a bad idea, and may not work as expected.  That could
> be your problem here, though I'm not sure.

I'm afraid I have no idea what "local contents" means here.
Please do expand (or point me to the relevant docs).


> > If I GET http://server/test.html, the substitution happens.
> > However, if I GET http://server/test, it does not.
> > What do I need to do to make substitution also work with
> > content negotiation?

If I change "Location" to "Directory" the substitution occurs.

However, in either case mod_info/mod_status then fail.
Given:

	<Location /info>
		SetHandler server-info
	</Location>
	<Location /status>
		SetHandler server-status
	</Location>

when I GET http://server/info or GET http://server/status,
I just get back an empty page.

When I remove the SetOutputFilter, info/status work again.



> See the mod_filter documentation for better filter control.

mod_filter doesn't seem to exist in 2.0.54 ?
I need something that works with both 2.0 and 2.2.



-jonathan

-- 
   Jonathan H N Chin     | deputy computer | Newton Institute, Cambridge, UK
<jc...@newton.cam.ac.uk> | systems manager | tel/fax: +44 1223 767091/330508

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