dco.hpp

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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
//
 
#ifndef OPENVPN_TRANSPORT_DCO_H
#define OPENVPN_TRANSPORT_DCO_H
 
#include <string>
 
#include <openvpn/common/rc.hpp>
#include <openvpn/common/options.hpp>
#include <openvpn/common/stop.hpp>
#include <openvpn/client/remotelist.hpp>
#include <openvpn/frame/frame.hpp>
#include <openvpn/log/sessionstats.hpp>
#include <openvpn/transport/protocol.hpp>
#include <openvpn/transport/client/transbase.hpp>
#include <openvpn/tun/layer.hpp>
#include <openvpn/tun/client/tunbase.hpp>
#include <openvpn/tun/client/tunprop.hpp>
 
#ifdef OPENVPN_PLATFORM_WIN
#include <openvpn/tun/win/client/tunsetup.hpp>
#include <openvpn/tun/win/client/clientconfig.hpp>
#endif
 
namespace openvpn {
struct DCO : public virtual RC<thread_unsafe_refcount>
{
    using Ptr = RCPtr<DCO>;
 
    struct TransportConfig
    {
        TransportConfig()
            : server_addr_float(false)
        {
        }
 
        Protocol protocol;
        RemoteList::Ptr remote_list;
        bool server_addr_float;
        Frame::Ptr frame;
        SessionStats::Ptr stats;
        SocketProtect *socket_protect = nullptr;
    };
 
    struct TunConfig
    {
#ifdef OPENVPN_PLATFORM_WIN
        TunWin::SetupFactory::Ptr setup_factory;
 
        TunWin::SetupBase::Ptr new_setup_obj(openvpn_io::io_context &io_context, bool allow_local_dns_resolvers)
        {
            if (setup_factory)
                return setup_factory->new_setup_obj(io_context, TunWin::OvpnDco, allow_local_dns_resolvers);
            else
                return new TunWin::Setup(io_context, TunWin::OvpnDco, allow_local_dns_resolvers);
        }
 
        TunWin::DcoTunPersist::Ptr tun_persist;
#endif
 
        TunProp::Config tun_prop;
        Stop *stop = nullptr;
 
        bool allow_local_dns_resolvers = false;
    };
 
    virtual TunClientFactory::Ptr new_tun_factory(const TunConfig &conf, const OptionList &opt) = 0;
    virtual TransportClientFactory::Ptr new_transport_factory(const TransportConfig &conf) = 0;
 
    TunBuilderBase *builder = nullptr;
};
} // namespace openvpn
 
#endif