SPIP sites with multiple domain names

Hi all,

We've got a project coming up with some unusual requirements, so I  
thought I'd ask on the list if anyone has any advice.

We will be building a SPIP site for a client which will be accessed  
using a number of different domain names. Depending on the domain  
name used, the site will have to display different content from a  
different rubrique or secteur using a different set of templates  
(product-specific "micro-sites").

Changing the templates is reasonably easy, if a little cumbersome, in  
`mes_options.php`:

> switch ( $_SERVER['SERVER_NAME'] ) {
> 	case 'domain1.net':
> 		$GLOBALS['dossier_squelettes'] = "templates/domain1";
> 		break;
> 	case 'domain2.com':
> 		$GLOBALS['dossier_squelettes'] = "templates/domain2";
> 		break;
> 	default:
> 		$GLOBALS['dossier_squelettes'] = "templates/default";
> 		break;
> }

Handling the different content, though, I'm not sure about. My  
current plan is to have a sector per site and have `{parent=...}` in  
the `sommaire.html` in each template directory, but this is  
inelegant. Can I add an `{id_secteur=...}` criterion to all  
(applicable) loops in the appropriate `case` statement above?

Ideally, I'd like to move the above code into a plug-in and manage  
all this from the back-end. Which pipeline is appropriate to set the ` 
$dossier_sequelettes` and other globals in this manner?

I'm also hoping to get some of the values from `spip_meta` done as  
well (`#NOM_SITE_SPIP` and `#URL_SITE_SPIP`, in particular). Is there  
a better way to do this rather than overriding  
`balise_NOM_SITE_SPIP_dist($p)`, etc?

Finally -- though it should probably have been first  -- is there  
already a plug-in to do this sort of thing?

Cheers,

Thomas Sutton
bouncingorange