<?php

/*
  * Nucleus: PHP/MySQL Weblog CMS (http://nucleuscms.org/) 
  * Copyright (C) 2002-2005 The Nucleus Group
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * as published by the Free Software Foundation; either version 2
  * of the License, or (at your option) any later version.
  * (see nucleus/documentation/index.html#license for more info)
 */

/**
  * Nucleus RSS syndication channel skin
 * @license http://nucleuscms.org/license.txt GNU General Public License
 * @copyright Copyright (C) 2002-2005 The Nucleus Group
 * @version $Id: xml-rss2.php,v 1.4.2.1 2005-08-25 07:04:13 kimitake Exp $
 * @version $NucleusJP$
  */

header("Pragma: no-cache");

$CONF = array();
$CONF['Self'] = "xml-rss2.php";

include('./config.php');

if (!$CONF['DisableSite']) {
	// get feed into $feed
	ob_start();
		selectSkin('feeds/rss20');
		selector();
	$feed = ob_get_contents();
	ob_end_clean();
	
	// create ETAG (hash of feed)
	// (HTTP_IF_NONE_MATCH has quotes around it)
	$eTag = '"'.md5($feed).'"';
	header('Etag: '.$eTag);
	
	// compare Etag to what we got
	if ($eTag == serverVar('HTTP_IF_NONE_MATCH')) {	
		header("HTTP/1.0 304 Not Modified");
		header('Content-Length: 0');
	} else {
		header("Content-Type: application/xml");
		// dump feed
		echo $feed;
	}
		
} else {
	// output empty RSS file...
	// (because site is disabled)
	
	echo '<' . '?xml version="1.0" encoding="ISO-8859-1"?' . '>';
	
	?>
	<rss version="2.0">
	  <channel>
	    <title><?php echo htmlspecialchars($CONF['SiteName'])?></title>
	    <link><?php echo htmlspecialchars($CONF['IndexURL'])?></link>
	    <description></description>
	    <docs>http://backend.userland.com/rss</docs>
 	  </channel>
	</rss>	
	<?php
}

?>
