--- /dev/null
+{% extends "base/class.php.twig" %}
+
+{% block file_path %}
+\Drupal\{{module}}\Authentication\Provider\{{class}}.
+{% endblock %}
+
+{% block namespace_class %}
+namespace Drupal\{{module}}\Authentication\Provider;
+{% endblock %}
+
+{% block use_class %}
+use Drupal\Core\Authentication\AuthenticationProviderInterface;
+use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
+use Symfony\Component\HttpKernel\Exception\UnauthorizedHttpException;
+use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
+{% endblock %}
+
+{% block class_declaration %}
+/**
+ * Class {{ class }}.
+ *
+ * @package Drupal\{{module}}\Authentication\Provider
+ */
+class {{ class }} implements AuthenticationProviderInterface {% endblock %}
+{% block class_variables %}
+ /**
+ * The config factory.
+ *
+ * @var \Drupal\Core\Config\ConfigFactoryInterface
+ */
+ protected $configFactory;
+
+ /**
+ * The entity type manager.
+ *
+ * @var \Drupal\Core\Entity\EntityTypeManagerInterface
+ */
+ protected $entityTypeManager;
+{% endblock %}
+
+{% block class_construct %}
+
+ /**
+ * Constructs a HTTP basic authentication provider object.
+ *
+ * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
+ * The config factory.
+ * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+ * The entity type manager service.
+ */
+ public function __construct(ConfigFactoryInterface $config_factory, EntityTypeManagerInterface $entity_type_manager) {
+ $this->configFactory = $config_factory;
+ $this->entityTypeManager = $entity_type_manager;
+ }
+{% endblock %}
+
+{% block class_create %}
+{% endblock %}
+
+{% block class_methods %}
+
+ /**
+ * Checks whether suitable authentication credentials are on the request.
+ *
+ * @param \Symfony\Component\HttpFoundation\Request $request
+ * The request object.
+ *
+ * @return bool
+ * TRUE if authentication credentials suitable for this provider are on the
+ * request, FALSE otherwise.
+ */
+ public function applies(Request $request) {
+ // If you return TRUE and the method Authentication logic fails,
+ // you will get out from Drupal navigation if you are logged in.
+ return FALSE;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function authenticate(Request $request) {
+ $consumer_ip = $request->getClientIp();
+ $ips = [];
+ if (in_array($consumer_ip, $ips)) {
+ // Return Anonymous user.
+ return $this->entityTypeManager->getStorage('user')->load(0);
+ }
+ else {
+ throw new AccessDeniedHttpException();
+ }
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function cleanup(Request $request) {}
+
+ /**
+ * {@inheritdoc}
+ */
+ public function handleException(GetResponseForExceptionEvent $event) {
+ $exception = $event->getException();
+ if ($exception instanceof AccessDeniedHttpException) {
+ $event->setException(
+ new UnauthorizedHttpException('Invalid consumer origin.', $exception)
+ );
+ return TRUE;
+ }
+ return FALSE;
+ }
+{% endblock %}