TLSHandshake.h

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/*
 * SNode.C - a slim toolkit for network communication
 * Copyright (C) Volker Christian <me@vchrist.at>
 *               2020, 2021, 2022, 2023, 2024, 2025
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef CORE_SOCKET_STREAM_TLS_TLSHANDSHAKE_H
#define CORE_SOCKET_STREAM_TLS_TLSHANDSHAKE_H
 
#include "core/eventreceiver/ReadEventReceiver.h"
#include "core/eventreceiver/WriteEventReceiver.h"
 
#ifndef DOXYGEN_SHOULD_SKIP_THIS
 
namespace utils {
    class Timeval;
}
 
#include <functional>
#include <openssl/opensslv.h>
#include <string>
 
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
#include <openssl/types.h>
#elif OPENSSL_VERSION_NUMBER >= 0x10100000L
#include <openssl/ossl_typ.h>
#endif
 
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
 
namespace core::socket::stream::tls {
 
    class TLSHandshake
        : public core::eventreceiver::ReadEventReceiver
        , public core::eventreceiver::WriteEventReceiver {
    public:
        static void doHandshake(const std::string& instanceName,
                                SSL* ssl,
                                const std::function<void(void)>& onSuccess,
                                const std::function<void(void)>& onTimeout,
                                const std::function<void(int)>& onStatus,
                                const utils::Timeval& timeout);
 
    private:
        TLSHandshake(const std::string& instanceName,
                     SSL* ssl,
                     const std::function<void(void)>& onSuccess,
                     const std::function<void(void)>& onTimeout,
                     const std::function<void(int)>& onStatus,
                     const utils::Timeval& timeout);
 
        void readEvent() final;
        void writeEvent() final;
        void signalEvent(int signum) final;
 
        void readTimeout() final;
        void writeTimeout() final;
 
        void unobservedEvent() final;
 
        SSL* ssl = nullptr;
        std::function<void(void)> onSuccess;
        std::function<void(void)> onTimeout;
        std::function<void(int)> onStatus;
 
        bool timeoutTriggered;
 
        int fd = -1;
    };
 
} // namespace core::socket::stream::tls
 
#endif // CORE_SOCKET_STREAM_TLS_TLSHANDSHAKE_H