xml-rss2.php

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<?php

/*
 * Nucleus: PHP/MySQL Weblog CMS (http://nucleuscms.org/)
 * Copyright (C) 2002-2007 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)
 */

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="' . _CHARSET . '"?' . '>';

        ?>
        <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
}

?>

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