[Owncloud] Extended webfinger app

[Florian Hülsmann]

Hi all,

I've recently been working on reimplementing the webfinger protocol for 
ownCloud, so other apps than the remoteStorage plugin can also use it. 
For instructions on how to use webfinger from your app, see the 
/apps/user_webfinger/webfinger.php file. I first thought of something 
like OC_Webfinger::register(), but unfortunately that not possible 
because the OC_Webfinger class must be in classpath before running all 
the appinfo/app.php scripts :-/

I also made the need of a symlink to the .well-known folder obsolete by 
creating a static "host-meta" file during installation (see 
appinfo/install.php). To make this accessible by pure javascript apps, 
the install.php also creates a static .htaccess file which sets some 
additional headers, so to make use of this it's now recommended that you 
have the apache mod_headers activated.

If you're pulling from master to update, please reinstall the webfinger 
app by deleting the .well-known symlink in your document root and 
calling owncloud/apps/user_webfinger/appinfo/install.php (with CURL or 
your browser, because it needs some server parameters!) I'm not sure if 
this could also be done by a built-in upgrade routine, so I'm telling you :P

Hope you are ok with that (it's kind of my first "direct" contribution 
to a big FOSS project :D ), have a nice day!

-- 
Florian Hülsmann
<fh at cbix.de>
http://cbix.de