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// OpenVPN -- An application to securely tunnel IP networks
// over a single port, with support for SSL/TLS-based
// session authentication and key exchange,
// packet encryption, packet authentication, and
// packet compression.
//
// Copyright (C) 2012- OpenVPN Inc.
//
// SPDX-License-Identifier: MPL-2.0 OR AGPL-3.0-only WITH openvpn3-openssl-exception
//
#pragma once
#include <string>
#include <memory>
#include <openvpn/ssl/sslapi.hpp>
#include <openvpn/ssl/sni_metadata.hpp>
namespace openvpn::SNI {
// Abstract base class used to provide an SNI handler
class HandlerBase
{
public:
typedef std::unique_ptr<HandlerBase> UPtr;
// Return a new SSLFactoryAPI for this SNI name.
// Implementation may also set sni_metadata.
// Return SSLFactoryAPI::Ptr() if sni_name is not recognized.
// The caller guarantees that sni_name is valid UTF-8 and
// doesn't contain any control characters.
// clang-format off
virtual SSLFactoryAPI::Ptr sni_hello(const std::string &sni_name,
SNI::Metadata::UPtr &sni_metadata,
SSLConfigAPI::Ptr default_factory) const = 0;
// clang-format on
virtual ~HandlerBase() = default;
};
} // namespace openvpn::SNI
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