bind.hpp

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// SPDX-License-Identifier: LGPL-2.1-or-later
#pragma once
 
#include <sshpp/config.hpp>
 
#include <sshpp/detail/native_fwd.hpp>
#include <sshpp/export.hpp>
#include <sshpp/key.hpp>
#include <sshpp/library.hpp>
#include <sshpp/result.hpp>
#include <sshpp/server/server_session.hpp>
 
#include <chrono>
#include <cstdint>
#include <filesystem>
#include <optional>
#include <string>
#include <vector>
 
namespace sshpp::server {
 
struct SSHPP_API BindOptions {
    std::string   bind_address = "0.0.0.0";
    std::uint16_t port = 22;
 
    std::vector<std::filesystem::path> host_key_files;
    std::vector<Key>                    host_keys;
 
    std::optional<std::string> banner;
    LogLevel                    log_level = LogLevel::none;
 
    Result<void> validate() const;
};
 
class SSHPP_API Bind {
public:
    Bind() = default;
    explicit Bind(const BindOptions&);
    ~Bind();
    Bind(Bind&&) noexcept;
    Bind& operator=(Bind&&) noexcept;
    Bind(const Bind&) = delete;
 
    explicit operator bool() const noexcept { return native_ != nullptr; }
    native_bind native_handle() const noexcept { return native_; }
 
    Result<void>  try_listen();
    std::uint16_t local_port() const noexcept { return configured_port_; }
    int           fd() const noexcept;
 
    Result<Session> try_accept();
    Result<std::optional<Session>> try_accept(std::chrono::milliseconds timeout);
 
private:
    native_bind   native_ = nullptr;
    std::uint16_t configured_port_ = 0;
};
 
} // namespace sshpp::server
 
#if SSHPP_HEADER_ONLY
#include <sshpp/detail/server_bind.ipp>
#endif