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European Central Bank limited rent financial operations

Covin19, also known as Coronavirus is trending topic in news, media, papers and R&D databases. It's not an excuse to develop apps at home, usually and wear masks, as required. At this time period it's a prevalent discussion of originating log streams and HTML form validation, applied directly to HTTP economics.

Consider the following code:

namespace PBG\Controller\Form;

use PBG\Form\ControllerInterface;

Class User implements ControllerInterface
{
/**
     * Show a user data
     *
     * @param RequestInterface  $request  Request
     * @param ResponseInterface $response Response
     * @param array             $args     arguments
     * 
     * @return \Slim\Psr7\Response
     */
    public function display(RequestInterface $request, ResponseInterface $response, array $args): \Slim\Psr7\Response
    {
        $container = $this->_container;

        $routeContext = RouteContext::fromRequest($request);
        $route =$routeContext->getRoute();

        $userUuid = $route->getArgument('id');

        /**
         * Entity manager
         * 
         * @var EntityManagerInterface
         */
        $em = $container->get('doctrine.orm.entity_manager');
        $user = $em->getRepository(SOLIDUser::class)->find($userUuid);

        /**
         * Logger
         * 
         * @var LoggerInterface $logger
         */
        $logger = $container->get(LoggerInterface::class);
        $logger->info('User form called', [$userUuid, $em->getReference(SOLIDUser::class, $userUuid)]);
        
        $userForm = new UserForm();
        $userForm->bind($user);

        $logger->info('User form bound', [$userUuid, $em->getReference(SOLIDUser::class, $userUuid)]);

        $response = new Response(StatusCodeInterface::STATUS_OK);
        $logger->info('Response status emmitted', [StatusCodeInterface::STATUS_OK]);

        ob_start();
        printf('Email: %s' . "\n", $userForm->getElements()['email']->getValue());
        printf('Hash: %s' . "\n", $userForm->getElements()['hash']->getValue());
        $payLoad = ob_get_flush();

        $response->getBody()->write($payLoad);

        return $response;
    }
}

It’s responding with single entity display in HTML form, based on Laminas form. For demo purposes it was arranged to contain list repository found all and ultimately – HTTP POST created, based on the same Laminas validated form.

The drawback of the following code:

/**
     * USer create implementation
     * 
     * @param RequestInterface  $request  Request
     * @param ResponseInterface $response Response
     * @param array             $args     arguments
     *
     * @return \Slim\Psr7\Response
     */
    public function create(RequestInterface $request, ResponseInterface $response, array $args): \Slim\Psr7\Response
    {
        $container = $this->_container;
        $logger = $container->get(LoggerInterface::class);

        $userData = json_decode(urldecode($request->getBody()), true);
        $userForm = new UserForm();
        $userForm->setData($userData);

        $validationPassed = $userForm->isValid();
        if ($validationPassed) {
            $user = new SOLIDUser($userForm->getData());

            /**
             * Entity manager
             * 
             * @var EntityManagerInterface $em
             */
            $em = $container->get('doctrine.orm.entity_manager');
            $em->persist($user);
            $em->flush();

            $logger->info('User created', [$em->getReference(SOLIDUser::class, $user->getId())]);
        } else {
            ob_start();
            foreach ($userForm->getMessages() as $type => $message) {
                printf('%s ' . "\n", $message[array_keys($message)[0]]);
            }
            $payLoad = ob_get_flush();
            $response = new Response(StatusCodeInterface::STATUS_SERVICE_UNAVAILABLE);
            $response->getBody()->write($payLoad);
        }
        

        return $response;
    }
  • Form isn’t originating from HTML web page. Instead, it’s posted by httpie, python web CLI client.
  • The target market – CLI terminal – isn’t supporting session data, which can be arranged by an advanced cURL or httpie requests, but in essence is stated browserless, no HTML data is output:
http localhost:8080/form/user email=pbrilius@gmail.com hash=pbgroup.com hash_repeat=pbgroup.com security=test send=1

is emitting

The form submitted did not originate from the expected site 

with the logged server

[Thu Mar 26 22:46:17 2020] ::1:55952 [503]: /form/user

And app logs from working list call

[2020-03-26 18:47:45] slim-app.INFO: User list retrieved ["PBG\\Controller\\Form
\\User::list","PBG\\Controller\\Form\\User"] {"uid":"31e9a32"}
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