/** * Validates a csrf enabled form */ public static function csrfValidate() { if (class_exists('\\Riimu\\Kit\\CSRF\\CSRFHandler')) { $csrf = new \Riimu\Kit\CSRF\CSRFHandler(false); try { $csrf->validateRequest(true); } catch (\Riimu\Kit\CSRF\InvalidCSRFTokenException $ex) { log::error($ex->getMessage()); http::locationHeader('/error/accessdenied', 'Bad request'); return false; } } return true; }
<?php require __DIR__ . '/../vendor/autoload.php'; $csrf = new \Riimu\Kit\CSRF\CSRFHandler(); try { $csrf->validateRequest(true); } catch (\Riimu\Kit\CSRF\InvalidCSRFTokenException $ex) { header('HTTP/1.0 400 Bad Request'); exit('Bad CSRF Token!'); } $token = $csrf->getToken(); ?> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Simple Form</title> </head> <body> <?php if (!empty($_POST['my_name'])) { printf(" <p>Hello <strong>%s</strong>!</p>" . PHP_EOL, htmlspecialchars($_POST['my_name'], ENT_QUOTES | ENT_HTML5, 'UTF-8')); } ?> <h3>Form with a CSRF token:</h3> <form method="post"><div> <input type="hidden" name="csrf_token" value="<?php echo htmlspecialchars($token, ENT_QUOTES | ENT_HTML5, 'UTF-8'); ?> " /> What is your name?
/** * Validate the CSRF token for all unsafe request methods * * @return boolean */ private function csrfValid() { $safe_methods = ['get', 'head', 'options', 'trace']; $request_method = strtolower($this->request->getMethod()); // test for valid CSRF token on all unsafe requests if (!in_array($request_method, $safe_methods)) { try { $csrf = new \Riimu\Kit\CSRF\CSRFHandler(); $csrf->validateRequest(true); } catch (\Riimu\Kit\CSRF\InvalidCSRFTokenException $ex) { error_log('Bad or missing CSRF token: ' . $this->request->getURI()); header('HTTP/1.0 400 Bad Request'); exit('Bad CSRF Token'); } } return TRUE; }