FirewallDetector.cpp

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/*
 * BastionGuard™
 * Copyright (C) 2025–2026 Calogero Scarnà
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, version 3.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *
 * BastionGuard™ is a trademark of Calogero Scarnà.
 * The BastionGuard™ name and branding are not licensed under the GPL.
 */
 
#include "../SafeProcess.hpp"
#include "FirewallDetector.hpp"
#include <fstream>
#include <cstdlib>
 
bool FirewallDetector::isFirewalldPresent() {
    return ((bg_process::exists_on_path("firewall-cmd") ? 0 : 1) == 0);
}
 
bool FirewallDetector::isUfwPresent() {
    return ((bg_process::exists_on_path("ufw") ? 0 : 1) == 0);
}
 
std::string FirewallDetector::detectDistro() {
    std::ifstream f("/etc/os-release");
    if (!f.is_open()) return "unknown";
 
    std::string line;
    while (std::getline(f, line)) {
        if (line.rfind("ID=", 0) == 0)
            return line.substr(3);
    }
    return "unknown";
}
 
FirewallType FirewallDetector::detectFirewall() {
    if (isFirewalldPresent()) return FirewallType::FIREWALLD;
    if (isUfwPresent()) return FirewallType::UFW;
    return FirewallType::NONE;
}