/**
 * Handle plugin administration page
 *
 */
function yourls_plugin_admin_page($plugin_page)
{
    global $ydb;
    // Check the plugin page is actually registered
    if (!isset($ydb->plugin_pages[$plugin_page])) {
        yourls_die('This page does not exist. Maybe a plugin you thought was activated is inactive?', 'Invalid link');
    }
    // Draw the page itself
    yourls_do_action('load-' . $plugin_page);
    yourls_html_head('plugin_page_' . $plugin_page, $ydb->plugin_pages[$plugin_page]['title']);
    yourls_html_logo();
    yourls_html_menu();
    call_user_func($ydb->plugin_pages[$plugin_page]['function']);
    yourls_html_footer();
    die;
}

        $max_on_page = $offset + $perpage;
    }
    // Determine Number Of Items To Display On Page
    if ($offset + 1 > $total_items) {
        $display_on_page = $total_items;
    } else {
        $display_on_page = $offset + 1;
    }
    // Determing Total Amount Of Pages
    $total_pages = ceil($total_items / $perpage);
}
// Begin output of the page
$context = $is_bookmark ? 'bookmark' : 'index';
yourls_html_head($context);
yourls_html_logo();
yourls_html_menu();
yourls_do_action('admin_page_before_content');
if (!$is_bookmark) {
    ?>
	<p><?php 
    echo $search_sentence;
    ?>
</p>
	<p><?php 
    printf(yourls__('Display <strong>%1$s</strong> to <strong class="increment">%2$s</strong> of <strong class="increment">%3$s</strong> URLs'), $display_on_page, $max_on_page, $total_items);
    if ($total_items_clicks !== false) {
        echo ", " . sprintf(yourls_n('counting <strong>1</strong> click', 'counting <strong>%s</strong> clicks', $total_items_clicks), yourls_number_format_i18n($total_items_clicks));
    }
    ?>
.</p>
<?php 

 /**
  * Yourls action auth_successful
  *
  * @return bool
  */
 public function action_auth_successful()
 {
     if (!yourls_is_admin()) {
         return true;
     }
     /**
      * Check page permissions
      */
     if (preg_match('#\\/admin\\/(.*?)\\.php#', $_SERVER['SCRIPT_FILENAME'], $matches)) {
         if (!in_array($matches[1], $this->helperGetAllowedPermissions())) {
             yourls_add_notice(yourls__('Denied access to this page', self::APP_NAMESPACE));
             yourls_html_head('accessdenied', yourls__('Denied access to this page', self::APP_NAMESPACE));
             yourls_html_logo();
             yourls_html_menu();
             yourls_html_footer();
             die;
         }
     }
     /**
      * Check action permissions
      */
     if (yourls_is_Ajax()) {
         $action = $this->getRequest('action');
         $permissions = $this->helperGetAllowedPermissions();
         $bol = false;
         switch ($action) {
             case 'edit_display':
             case 'edit_save':
                 if (!in_array('edit', $permissions['action'])) {
                     $bol = true;
                 }
                 break;
             case 'add':
             case 'delete':
                 if (!in_array($action, $permissions['action'])) {
                     $bol = true;
                 }
                 break;
         }
         if ($bol) {
             $this->setRequest('action_old', $action);
             $this->setRequest('action', 'accessdenied');
         }
     }
 }