root/releases/0.401/profile/rss2.php

<?php

    //    ELGG aggregated RSS 2.0 page
    // this is now only used for tag-search feeds

    // Run includes
        require("../includes.php");
        
        run("weblogs:init");
        run("profile:init");
        
        global $individual;
        global $page_owner;
        
        $individual = 1;
        
        $sitename = (sitename);
        
        $output = "";
        
        $tag = trim($_REQUEST['tag']);
        
        if (isset($page_owner)) {
            
            $rssactivity = sprintf(gettext("Activity tagged with %s"),$tag);
            
            $info = db_query("select * from users where ident = $page_owner");
            if (sizeof($info) > 0) {
                $info = $info[0];
                $name = (stripslashes($info->name));
                $username = (stripslashes($info->username));
                $mainurl = (url . $username . "/");
                $rssurl = $mainurl . "rss/" . urlencode(trim($_REQUEST['tag']));
                $url = url;
                $rssdescription = sprintf(gettext("Activity for %s, hosted on %s."),$name,$sitename);
                $output .= <<< END
<?xml-stylesheet type="text/xsl" href="{$rssurl}/rssstyles.xsl"?>
<rss version='2.0'   xmlns:dc='http://purl.org/dc/elements/1.1/'>
    <channel xml:base='$mainurl'>
        <title><![CDATA[$name : $rssactivity]]></title>
        <description><![CDATA[$rssdescription]]></description>
        <link>$mainurl</link>
END;

                
                // WEBLOGS
                $output .= run("weblogs:rss:getitems", array($page_owner, 10, $tag));
                
                // FILES
                $output .= run("files:rss:getitems", array($page_owner, 10, $tag));
                
                $output .= <<< END

    </channel>
</rss>
END;
            }
            
            if ($output) {
                header("Pragma: public");
                header("Cache-Control: public"); 
                header('Expires: ' . gmdate("D, d M Y H:i:s", (time()+3600)) . " GMT");
                
                $if_none_match = preg_replace('/[^0-9a-f]/', '', $_SERVER['HTTP_IF_NONE_MATCH']);
                
                $etag = md5($output);
                header('ETag: "' . $etag . '"');
                
                if ($if_none_match == $etag) {
                    header("{$_SERVER['SERVER_PROTOCOL']} 304 Not Modified");
                    exit;
                }
                
                header("Content-Length: " . strlen($output));
                
                header("Content-type: text/xml");
                echo $output;
            }
        }