transmission/daemon/daemon.h

// This file Copyright © 2015-2022 Mnemosyne LLC.
// It may be used under GPLv2 (SPDX: GPL-2.0-only), GPLv3 (SPDX: GPL-3.0-only),
// or any future license endorsed by Mnemosyne LLC.
// License text can be found in the licenses/ folder.

#pragma once

#include <string>
#include <string_view>

#include <libtransmission/transmission.h>
#include <libtransmission/variant.h>
#include <libtransmission/error.h>
#include <libtransmission/utils.h>
#include <libtransmission/file.h>
#include <libtransmission/log.h>

using namespace std::literals;

class tr_daemon
{
public:
    tr_daemon() = default;

    ~tr_daemon()
    {
#ifdef HAVE_SYS_SIGNALFD_H
        if (sigfd_ != -1)
        {
            close(sigfd_);
        }
#endif /* signalfd API */
        tr_variantClear(&settings_);
    }

    bool spawn(bool foreground, int* exit_code, tr_error** error);
    bool init(int argc, char* argv[], bool* foreground, int* ret);
    void handle_error(tr_error*);
    int start(bool foreground);
    void periodic_update();
    void reconfigure();
    void stop();

private:
#ifdef HAVE_SYS_SIGNALFD_H
    int sigfd_ = -1;
#endif /* signalfd API */
    bool paused_ = false;
    bool seen_hup_ = false;
    std::string config_dir_;
    tr_variant settings_ = {};
    tr_session* my_session_ = nullptr;
    char const* log_file_name_ = nullptr;
    struct event_base* ev_base_ = nullptr;
    tr_sys_file_t logfile_ = TR_BAD_SYS_FILE;
    tr_quark key_pidfile_ = tr_quark_new("pidfile"sv);
    tr_quark key_watch_dir_force_generic_ = tr_quark_new("watch-dir-force-generic"sv);

    bool parse_args(int argc, char const** argv, bool* dump_settings, bool* foreground, int* exit_code);
    bool reopen_log_file(char const* filename);
    bool setup_signals();
    void report_status();
};