class LockrKeyProvider in Lockr 4.x

Adds a key provider that allows a key to be stored in Lockr.

Plugin annotation

@KeyProvider(
  id = "lockr",
  label = "Lockr",
  description = @Translation("The Lockr key provider stores the key in Lockr key management service."),
  storage_method = "lockr",
  key_value = {
    "accepted" = TRUE,
    "required" = TRUE
  }
)

Hierarchy

• class \Drupal\lockr\Plugin\KeyProvider\LockrKeyProvider extends \Drupal\key\Plugin\KeyProviderBase implements \Drupal\key\Plugin\KeyPluginFormInterface, \Drupal\key\Plugin\KeyProviderSettableValueInterface

File

src/Plugin/KeyProvider/LockrKeyProvider.php, line 39

Contains Drupal\lockr\Plugin\KeyProvider\LockrKeyProvider.

Namespace

Drupal\lockr\Plugin\KeyProvider

class LockrKeyProvider extends KeyProviderBase implements KeyProviderSettableValueInterface, KeyPluginFormInterface {

  /**
   * Drupal config factory.
   *
   * @var ConfigFactoryInterface
   */
  protected $configFactory;

  /**
   * Lockr library client.
   *
   * @var Lockr
   */
  protected $lockr;

  /**
   * Logger channel.
   *
   * @var LoggerChannelInterface
   */
  protected $logger;

  /**
   * Constructs a new LockrKeyProvider.
   *
   * @param array $configuration
   *   A configuration array containing information about the plugin instance.
   * @param string $plugin_id
   *   The plugin_id for the plugin instance.
   * @param mixed $plugin_definition
   *   The plugin implementation definition.
   * @param ConfigFactoryInterface $config_factory
   *   The simple config factory.
   * @param EntityTypeManagerInterface $entity_type_manager
   *   The entity type manager.
   * @param Lockr $lockr
   *   The Lockr library client.
   * @param LoggerChannelInterface $logger
   *   The lockr Drupal logger channel.
   */
  public function __construct(array $configuration, $plugin_id, $plugin_definition, ConfigFactoryInterface $config_factory, EntityTypeManagerInterface $entity_type_manager, Lockr $lockr, LoggerChannelInterface $logger) {
    parent::__construct($configuration, $plugin_id, $plugin_definition);
    $this->configFactory = $config_factory;
    $this->secretStorage = $entity_type_manager
      ->getStorage('lockr_secret');
    $this->lockr = $lockr;
    $this->logger = $logger;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
    return new static($configuration, $plugin_id, $plugin_definition, $container
      ->get('config.factory'), $container
      ->get('entity_type.manager'), $container
      ->get('lockr.lockr'), $container
      ->get('logger.channel.lockr'));
  }

  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration() {
    return [];
  }

  /**
   * {@inheritdoc}
   */
  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
    $info = $this->lockr
      ->getInfo();
    if (!$info) {
      $form['need_register'] = [
        '#prefix' => '<p>',
        '#markup' => $this
          ->t('This site has not yet registered with Lockr, please <a href="@link">click here to register</a>.', [
          '@link' => Url::fromRoute('lockr.admin')
            ->toString(),
        ]),
        '#suffix' => '</p>',
      ];
    }
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function validateConfigurationForm(array &$form, FormStateInterface $form_state) {
  }

  /**
   * {@inheritdoc}
   */
  public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
  }

  /**
   * {@inheritdoc}
   */
  public function getKeyValue(KeyInterface $key) {
    $key_id = $this
      ->getLockrSecretName($key
      ->id());
    try {
      $key_value = $this->lockr
        ->getSecretValue($key_id);
    } catch (\Exception $e) {
      if ($e
        ->getCode() === 404) {
        return $this
          ->generateKey($key);
      }
      $this
        ->logException($e);
      return NULL;
    }
    if (is_null($key_value)) {
      return $this
        ->generateKey($key);
    }
    return $key_value;
  }

  /**
   * Creates a new key value, returning it.
   */
  protected function generateKey(KeyInterface $key) {
    $key_type = $key
      ->getKeyType();
    if ($key_type
      ->getPluginId() === 'lockr_encryption') {
      $key_size = (int) $key_type
        ->getConfiguration()['key_size'];
      $new_value = $this->lockr
        ->generateKey($key_size);
      try {
        $this
          ->setKeyValue($key, $new_value);
      } catch (\Exception $e) {
        $this
          ->logException($e);
        return NULL;
      }
      return $new_value;
    }
    return NULL;
  }

  /**
   * Logs exceptions that occur during Lockr requests.
   *
   * @param \Exception $e
   *   The exception to log.
   */
  protected function logException(\Exception $e) {
    $this->logger
      ->error('Error retrieving value from Lockr [{ex_code}]: {ex_msg}', [
      'ex_code' => $e
        ->getCode(),
      'ex_msg' => $e
        ->getMessage(),
    ]);
  }

  /**
   * {@inheritdoc}
   */
  public function setKeyValue(KeyInterface $key, $key_value) {
    $this->lockr
      ->createSecretValue($this
      ->getLockrSecretName($key
      ->id()), $key_value, $key
      ->label(), $this->configFactory
      ->get('lockr.settings')
      ->get('region'));
    return TRUE;
  }

  /**
   * {@inheritdoc}
   */
  public function deleteKeyValue(KeyInterface $key) {
    $this->lockr
      ->deleteSecretValue($key
      ->id());
    return TRUE;
  }

  /**
   * Gets the lockr secret name for the given key ID.
   */
  public function getLockrSecretName($key_id) {
    $secrets = $this->secretStorage
      ->loadByProperties([
      'key_id' => $key_id,
    ]);
    if (!$secrets) {
      return $key_id;
    }
    return reset($secrets)
      ->id();
  }

}

Members

Name	Modifiers	Type	Description	Overrides
LockrKeyProvider::$configFactory	protected	property	Drupal config factory.
LockrKeyProvider::$lockr	protected	property	Lockr library client.
LockrKeyProvider::$logger	protected	property	Logger channel.
LockrKeyProvider::buildConfigurationForm	public	function
LockrKeyProvider::create	public static	function
LockrKeyProvider::defaultConfiguration	public	function
LockrKeyProvider::deleteKeyValue	public	function
LockrKeyProvider::generateKey	protected	function	Creates a new key value, returning it.
LockrKeyProvider::getKeyValue	public	function
LockrKeyProvider::getLockrSecretName	public	function	Gets the lockr secret name for the given key ID.
LockrKeyProvider::logException	protected	function	Logs exceptions that occur during Lockr requests.
LockrKeyProvider::setKeyValue	public	function
LockrKeyProvider::submitConfigurationForm	public	function
LockrKeyProvider::validateConfigurationForm	public	function
LockrKeyProvider::__construct	public	function	Constructs a new LockrKeyProvider.