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wp-content/plugins/gravitysmtp/includes/apps/setup-wizard/endpoints/class-license-check-endpoint.php

@@ -0,0 +1,58 @@
+<?php
+
+namespace Gravity_Forms\Gravity_SMTP\Apps\Setup_Wizard\Endpoints;
+
+use Gravity_Forms\Gravity_SMTP\Gravity_SMTP;
+use Gravity_Forms\Gravity_SMTP\Users\Roles;
+use Gravity_Forms\Gravity_Tools\Endpoints\Endpoint;
+use Gravity_Forms\Gravity_Tools\License\License_Statuses;
+use Gravity_Forms\Gravity_Tools\Updates\Updates_Service_Provider;
+
+class License_Check_Endpoint extends Endpoint {
+
+	const PARAM_LICENSE_KEY = 'license_key';
+
+	const ACTION_NAME = 'check_license';
+
+	protected $minimum_cap = Roles::EDIT_LICENSE_KEY;
+
+	protected function get_nonce_name() {
+		return self::ACTION_NAME;
+	}
+
+	public function handle() {
+		if ( ! $this->validate() ) {
+			wp_send_json_error( __( 'Missing required parameters.', 'gravitysmtp' ), 400 );
+		}
+
+		$license_key = filter_input( INPUT_POST, self::PARAM_LICENSE_KEY );
+		$license_key = htmlspecialchars( $license_key );
+
+		$container    = Gravity_SMTP::container();
+		$key_is_empty = empty( $license_key );
+		$is_valid     = false;
+
+		if ( ! $key_is_empty ) {
+			$license_info = $container->get( Updates_Service_Provider::LICENSE_API_CONNECTOR )->check_license( $license_key );
+			$is_valid     = License_Statuses::VALID_KEY === $license_info->get_status();
+		}
+
+		if ( ! $is_valid ) {
+			wp_send_json_error( __( 'Invalid license key.', 'gravitysmtp' ), 400 );
+		}
+
+		wp_send_json_success( array( 'license_key' => $license_key ) );
+	}
+
+	protected function validate() {
+		if ( ! parent::validate() ) {
+			return false;
+		}
+
+		if ( empty( $_REQUEST[ self::PARAM_LICENSE_KEY ] ) ) {
+			return false;
+		}
+
+		return true;
+	}
+}