/** * Set CSRF Hash and Cookie * * @return string */ protected function _csrf_set_hash() { if ($this->_csrf_hash === NULL) { // If the cookie exists we will use its value. // We don‘t necessarily want to regenerate it with // each page load since a page could contain embedded // sub-pages causing this feature to fail if (isset($_COOKIE[$this->_csrf_cookie_name]) && is_string($_COOKIE[$this->_csrf_cookie_name]) && preg_match(‘#^[0-9a-f]{32}$#iS‘, $_COOKIE[$this->_csrf_cookie_name]) === 1) { return $this->_csrf_hash = $_COOKIE[$this->_csrf_cookie_name]; } $rand = $this->get_random_bytes(16); $this->_csrf_hash = ($rand === FALSE) ? md5(uniqid(mt_rand(), TRUE)) : bin2hex($rand); } return $this->_csrf_hash; }
时间: 2024-08-29 08:01:16