if ($from < 0) {
    $from = $to + $from;
}
$period = $to - $from;
$prev_from = $from - $period;
$graphfile = $config['temp_dir'] . '/' . strgen() . '.png';
$type = $graphtype['type'];
$subtype = $graphtype['subtype'];
if ($auth !== true && $auth != 1) {
    $auth = is_client_authorized($_SERVER['REMOTE_ADDR']);
}
require $config['install_dir'] . "/html/includes/graphs/{$type}/auth.inc.php";
if ($auth === true && is_custom_graph($type, $subtype, $device)) {
    include $config['install_dir'] . "/html/includes/graphs/custom.inc.php";
} else {
    if ($auth === true && is_mib_graph($type, $subtype)) {
        include $config['install_dir'] . "/html/includes/graphs/{$type}/mib.inc.php";
    } elseif ($auth === true && is_file($config['install_dir'] . "/html/includes/graphs/{$type}/{$subtype}.inc.php")) {
        include $config['install_dir'] . "/html/includes/graphs/{$type}/{$subtype}.inc.php";
    } else {
        graph_error("{$type}*{$subtype} ");
        // Graph Template Missing");
    }
}
function graph_error($string)
{
    global $vars, $config, $debug, $graphfile;
    $vars['bg'] = 'FFBBBB';
    include 'includes/graphs/common.inc.php';
    $rrd_options .= ' HRULE:0#555555';
    $rrd_options .= " --title='" . $string . "'";

function get_graph_subtypes($type, $device = null)
{
    global $config;
    $types = array();
    // find the subtypes defined in files
    if ($handle = opendir($config['install_dir'] . "/html/includes/graphs/{$type}/")) {
        while (false !== ($file = readdir($handle))) {
            if ($file != "." && $file != ".." && $file != "auth.inc.php" && strstr($file, ".inc.php")) {
                $types[] = str_replace(".inc.php", "", $file);
            }
        }
        closedir($handle);
    }
    // find the MIB subtypes
    foreach ($config['graph_types'] as $type => $unused1) {
        foreach ($config['graph_types'][$type] as $subtype => $unused2) {
            if (is_mib_graph($type, $subtype) && $device != null && is_device_graph($device, $subtype)) {
                $types[] = $subtype;
            }
        }
    }
    sort($types);
    return $types;
}

foreach ($menu_options as $option => $text) {
    echo $sep;
    if ($vars['format'] == 'graph_' . $option) {
        echo '<span class="pagemenu-selected">';
    }
    echo '<a href="' . generate_url($vars, array('format' => 'graph_' . $option, 'from' => '-24h', 'to' => 'now')) . '">' . $text . '</a>';
    if ($vars['format'] == 'graph_' . $option) {
        echo '</span>';
    }
    $sep = " | ";
}
echo '<div class="devices-float-right">';
$graphs_types = '<select name="type" id="type" onchange="window.open(this.options[this.selectedIndex].value,\'_top\')" class="devices-graphs-select">';
$type = 'device';
foreach (get_graph_subtypes($type) as $avail_type) {
    $display_type = is_mib_graph($type, $avail_type) ? $avail_type : nicecase($avail_type);
    if ('graph_' . $avail_type == $vars['format']) {
        $is_selected = 'selected';
    } else {
        $is_selected = '';
    }
    $graphs_types .= '<option value="' . generate_url($vars, array('format' => 'graph_' . $avail_type)) . '" ' . $is_selected . '>' . $display_type . '</option>';
}
$graphs_types .= '</select>';
echo $graphs_types;
if (isset($vars['searchbar']) && $vars['searchbar'] == "hide") {
    echo '<a href="' . generate_url($vars, array('searchbar' => '')) . '">Restore Search</a>';
} else {
    echo '<a href="' . generate_url($vars, array('searchbar' => 'hide')) . '">Remove Search</a>';
}
echo "  | ";