ConfigForm.php in JSON Web Token Authentication (JWT) 8

Namespace

Drupal\jwt\Form

File

src/Form/ConfigForm.php

<?php

namespace Drupal\jwt\Form;

use Drupal\Core\Config\ConfigFactoryInterface;
use Drupal\Core\Form\ConfigFormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\key\KeyRepositoryInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Drupal\jwt\Transcoder\JwtTranscoder;

/**
 * Class ConfigForm.
 *
 * @package Drupal\jwt\Form
 */
class ConfigForm extends ConfigFormBase {

  /**
   * The JWT transcoder.
   *
   * @var \Drupal\jwt\Transcoder\JwtTranscoder
   */
  protected $transcoder;

  /**
   * The key repository.
   *
   * @var \Drupal\key\KeyRepositoryInterface
   */
  protected $keyRepo;

  /**
   * ConfigForm constructor.
   *
   * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
   *   Config factory for parent.
   * @param \Drupal\key\KeyRepositoryInterface $key_repo
   *   Key repo to validate keys.
   * @param \Drupal\jwt\Transcoder\JwtTranscoder $transcoder
   *   JWT Transcoder.
   */
  public function __construct(ConfigFactoryInterface $config_factory, KeyRepositoryInterface $key_repo, JwtTranscoder $transcoder) {
    $this->keyRepo = $key_repo;
    $this->transcoder = $transcoder;
    parent::__construct($config_factory);
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('config.factory'), $container
      ->get('key.repository'), $container
      ->get('jwt.transcoder'));
  }

  /**
   * {@inheritdoc}
   */
  protected function getEditableConfigNames() {
    return [
      'jwt.config',
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'jwt_config_form';
  }

  /**
   * AJAX Function callback.
   *
   * @param array $form
   *   Drupal form array.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   Drupal formstate object.
   *
   * @return mixed
   *   Updated AJAXed form.
   */
  public function ajaxCallback(array &$form, FormStateInterface $form_state) {
    return $form['key-container'];
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {
    $form['key-container'] = [
      '#type' => 'container',
      '#prefix' => '<div id="jwt-key-container">',
      '#suffix' => '</div>',
      '#weight' => 10,
    ];
    $form['jwt_algorithm'] = [
      '#type' => 'select',
      '#title' => $this
        ->t('Algorithm'),
      '#options' => $this->transcoder
        ->getAlgorithmOptions(),
      '#ajax' => [
        'callback' => '::ajaxCallback',
        'event' => 'change',
        'wrapper' => 'jwt-key-container',
        'progress' => [
          'type' => 'throbber',
        ],
      ],
      '#default_value' => $this
        ->config('jwt.config')
        ->get('algorithm'),
    ];
    if ($form_state
      ->isValueEmpty('jwt_algorithm')) {
      if (!empty($this
        ->config('jwt.config')
        ->get('algorithm'))) {
        $type = $this->transcoder
          ->getAlgorithmType($this
          ->config('jwt.config')
          ->get('algorithm'));
      }
      else {
        $type = 'jwt_hs';
      }
    }
    else {
      $type = $this->transcoder
        ->getAlgorithmType($form_state
        ->getValue('jwt_algorithm'));
    }
    $text = $type == 'jwt_hs' ? $this
      ->t('Secret') : $this
      ->t('Private Key');
    $form['key-container']['jwt_key'] = [
      '#type' => 'key_select',
      '#title' => $text,
      '#default_value' => $this
        ->config('jwt.config')
        ->get('key_id'),
      '#key_filters' => [
        'type' => $type,
      ],
      '#validated' => TRUE,
      '#required' => TRUE,
    ];
    return parent::buildForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function validateForm(array &$form, FormStateInterface $form_state) {
    $algorithm = $form_state
      ->getValue('jwt_algorithm');
    $key_id = $form_state
      ->getValue('jwt_key');
    $key = $this->keyRepo
      ->getKey($key_id);
    if ($key != NULL && $key
      ->getKeyType()
      ->getPluginId() != $this->transcoder
      ->getAlgorithmType($algorithm)) {
      $form_state
        ->setErrorByName('jwt_key', $this
        ->t('Incorrect key type selected.'));
    }
    if ($key != NULL && $key
      ->getKeyType()
      ->getConfiguration()['algorithm'] != $algorithm) {
      $form_state
        ->setErrorByName('jwt_key', $this
        ->t('Key does not match algorithm selected.'));
    }
    parent::validateForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    parent::submitForm($form, $form_state);
    $values = $form_state
      ->getValues();
    if (isset($values['jwt_algorithm'])) {
      $this
        ->config('jwt.config')
        ->set('algorithm', $values['jwt_algorithm'])
        ->save();
    }
    if (isset($values['jwt_key'])) {
      $this
        ->config('jwt.config')
        ->set('key_id', $values['jwt_key'])
        ->save();
    }
  }

}

Classes

Name	Description
ConfigForm	Class ConfigForm.