Raphaël G. Git Repositories - packbundle/blob - Form/CaptchaType.php

   1 <?php declare(strict_types=1);
   2
   3 /*
   4  * This file is part of the Rapsys PackBundle package.
   5  *
   6  * (c) Raphaël Gertz <symfony@rapsys.eu>
   7  *
   8  * For the full copyright and license information, please view the LICENSE
   9  * file that was distributed with this source code.
  10  */
  11
  12 namespace Rapsys\PackBundle\Form;
  13
  14 use Rapsys\PackBundle\RapsysPackBundle;
  15 use Rapsys\PackBundle\Util\ImageUtil;
  16 use Rapsys\PackBundle\Util\SluggerUtil;
  17
  18 use Symfony\Component\Form\AbstractType;
  19 use Symfony\Component\Form\Extension\Core\Type\HiddenType;
  20 use Symfony\Component\Form\Extension\Core\Type\IntegerType;
  21 use Symfony\Component\Form\FormBuilderInterface;
  22 use Symfony\Component\Form\FormError;
  23 use Symfony\Component\Form\FormEvent;
  24 use Symfony\Component\Form\FormEvents;
  25 use Symfony\Component\OptionsResolver\OptionsResolver;
  26 use Symfony\Contracts\Translation\TranslatorInterface;
  27
  28 /**
  29  * Captcha Type class definition
  30  *
  31  * @see https://symfony.com/doc/current/form/create_custom_field_type.html
  32  */
  33 class CaptchaType extends AbstractType {
  34         /**
  35          * Constructor
  36          *
  37          * @param ?ImageUtil $image The image instance
  38          * @param ?SluggerUtil $slugger The slugger instance
  39          * @param ?TranslatorInterface $translator The translator instance
  40          * @param bool $enable Use captcha
  41          */
  42         public function __construct(protected ?ImageUtil $image = null, protected ?SluggerUtil $slugger = null, protected ?TranslatorInterface $translator = null, protected bool $enable = false) {
  43         }
  44
  45         /**
  46          * {@inheritdoc}
  47          *
  48          * Build form
  49          */
  50         public function buildForm(FormBuilderInterface $builder, array $options): void {
  51                 //With image, slugger and translator
  52                 if (!empty($options['captcha']) && $this->image !== null && $this->slugger !== null && $this->translator !== null) {
  53                         //Set captcha
  54                         $captcha = $this->image->getCaptcha();
  55
  56                         //Add captcha token
  57                         $builder->add('_captcha_token', HiddenType::class, ['data' => $captcha['token'], 'empty_data' => $captcha['token'], 'mapped' => false]);
  58
  59                         //Add captcha
  60                         $builder->add('captcha', IntegerType::class, ['label_attr' => ['class' => 'captcha'], 'label' => '<img src="'.htmlentities($captcha['src']).'" alt="'.htmlentities($captcha['equation']).'" />', 'label_html' => true, 'mapped' => false, 'translation_domain' => false]);
  61
  62                         //Add event listener on captcha
  63                         $builder->addEventListener(FormEvents::PRE_SUBMIT, [$this, 'validateCaptcha']);
  64                 }
  65         }
  66
  67         /**
  68          * {@inheritdoc}
  69          */
  70         public function configureOptions(OptionsResolver $resolver): void {
  71                 //Call parent configure options
  72                 parent::configureOptions($resolver);
  73
  74                 //Set defaults
  75                 $resolver->setDefaults(['captcha' => $this->enable, 'error_bubbling' => true, 'translation_domain' => RapsysPackBundle::getAlias()]);
  76
  77                 //Add extra captcha option
  78                 $resolver->setAllowedTypes('captcha', 'boolean');
  79         }
  80
  81         /**
  82          * Validate captcha
  83          *
  84          * @param FormEvent $event The form event
  85          */
  86         public function validateCaptcha(FormEvent $event): void {
  87                 //Get form
  88                 $form = $event->getForm();
  89
  90                 //Get event data
  91                 $data = $event->getData();
  92
  93                 //Set token
  94                 $token = $form->get('_captcha_token')->getConfig()->getData();
  95
  96                 //Without captcha
  97                 if (empty($data['captcha'])) {
  98                         //Add error on captcha
  99                         $form->addError(new FormError($this->translator->trans('Captcha is empty')));
 100
 101                         //Reset captcha token
 102                         $data['_captcha_token'] = $token;
 103
 104                         //Set event data
 105                         $event->setData($data);
 106                 //With invalid captcha
 107                 } elseif ($this->slugger->hash($data['captcha']) !== $data['_captcha_token']) {
 108                         //Add error on captcha
 109                         $form->addError(new FormError($this->translator->trans('Captcha is invalid')));
 110
 111                         //Reset captcha token
 112                         $data['_captcha_token'] = $token;
 113
 114                         //Set event data
 115                         $event->setData($data);
 116                 }
 117         }
 118 }