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* @license GNU General Public License version 2 or later; see LICENSE.txt */ namespace Joomla\CMS\HTML\Helpers; \defined('JPATH_PLATFORM') or die; use Joomla\CMS\Document\HtmlDocument; use Joomla\CMS\Factory; use Joomla\CMS\Session\Session; use Joomla\Utilities\ArrayHelper; /** * Utility class for form elements * * @since 1.5 */ abstract class Form { /** * Array containing information for loaded files. * * @var array * * @since 3.8.0 */ protected static $loaded = array(); /** * Displays a hidden token field to reduce the risk of CSRF exploits * * Use in conjunction with Session::checkToken() * * @param array $attribs Input element attributes. * * @return string A hidden input field with a token * * @see Session::checkToken() * @since 1.5 */ public static function token(array $attribs = array()) { $attributes = ''; if ($attribs !== array()) { $attributes .= ' ' . ArrayHelper::toString($attribs); } return '
'; } /** * Add CSRF form token to Joomla script options that developers can get it by Javascript. * * @param string $name The script option key name. * * @return void * * @since 3.8.0 */ public static function csrf($name = 'csrf.token') { if (isset(static::$loaded[__METHOD__][$name])) { return; } /** @var HtmlDocument $doc */ $doc = Factory::getDocument(); if (!$doc instanceof HtmlDocument || $doc->getType() !== 'html') { return; } $doc->addScriptOptions($name, Session::getFormToken()); static::$loaded[__METHOD__][$name] = true; } }