nawarun.h

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/*
 * Copyright (C) 2019-2022 Tobias Flaig.
 *
 * This file is part of nawa.
 *
 * nawa is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License,
 * version 3, as published by the Free Software Foundation.
 *
 * nawa 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 nawa.  If not, see <https://www.gnu.org/licenses/>.
 */
 
#ifndef NAWA_NAWARUN_H
#define NAWA_NAWARUN_H
 
#include <memory>
#include <nawa/internal/fwdecl.h>
#include <optional>
#include <string>
#include <tuple>
#include <unistd.h>
#include <vector>
 
namespace nawarun {
    using PrivilegeDowngradeData = std::tuple<uid_t, gid_t, std::vector<gid_t>>;
 
    struct Parameters {
        using ConfigOptionId = std::pair<std::string, std::string>;
        using ConfigOverride = std::pair<ConfigOptionId, std::string>;
        std::optional<std::string> configFile;
        std::vector<ConfigOverride> configOverrides;
    };
 
    // Types of functions that need to be accessed from NAWA applications
    using init_t = int(nawa::AppInit&);             
    using handleRequest_t = int(nawa::Connection&); 
    unsigned int getConcurrency(nawa::Config const& config);
 
    std::pair<init_t*, std::shared_ptr<nawa::HandleRequestFunctionWrapper>> loadAppFunctions(nawa::Config const& config);
 
    void reload(int signum);
 
    std::optional<PrivilegeDowngradeData> preparePrivilegeDowngrade(nawa::Config const& config);
 
    void replaceLogger(nawa::Log const& log);
 
    Parameters parseCommandLine(int argc, char** argv);
 
    int run(Parameters const& parameters);
}// namespace nawarun
 
#endif//NAWA_NAWARUN_H