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// OpenVPN 3 Linux client -- Next generation OpenVPN client
//
// SPDX-License-Identifier: AGPL-3.0-only
//
// Copyright (C) 2017- OpenVPN Inc <sales@openvpn.net>
// Copyright (C) 2024- Răzvan Cojocaru <razvan.cojocaru@openvpn.com>
//
#include "sysinfo.hpp"
#include <chrono>
#include <cstring>
#include <ctime>
#include <errno.h>
#include <fstream>
#include <iomanip>
#include <regex>
#include <sstream>
#include <streambuf>
#include <stdexcept>
#include <sys/utsname.h>
namespace {
std::string search_os_release(const std::string &key, const std::string &contents)
{
const std::regex REG{R"-((^|\n))-" + key + R"-(\s*=\s*"?([^"^\n]*)"?)-"};
std::smatch m;
if (std::regex_search(contents, m, REG))
return m[2];
return {};
}
} // end of anonymous namespace
namespace DevPosture {
SysInfo::SysInfo()
{
using namespace std::string_literals;
utsname un{};
if (::uname(&un))
throw std::runtime_error("Failed to retrieve OS information: "s + strerror(errno));
uname = {un.sysname, un.machine, un.version, un.release};
os_release.extra_version = un.release;
std::ifstream oi("/etc/os-release");
// It's fine, we have uname() fallbacks.
if (!oi)
return;
const std::string contents((std::istreambuf_iterator<char>(oi)),
std::istreambuf_iterator<char>());
os_release.version_id = search_os_release("VERSION_ID", contents);
os_release.id = search_os_release("ID", contents);
os_release.cpe = search_os_release("CPE_NAME", contents);
std::string tentative_version = search_os_release("VERSION", contents);
if (!tentative_version.empty())
os_release.extra_version = tentative_version;
}
DateTime::DateTime()
{
auto now = std::chrono::system_clock::now();
auto now_time_t = std::chrono::system_clock::to_time_t(now);
std::stringstream ss;
ss << std::put_time(std::localtime(&now_time_t), "%F");
date = ss.str();
ss.str("");
ss << std::put_time(std::localtime(&now_time_t), "%T");
time = ss.str();
ss.str("");
ss << std::put_time(std::localtime(&now_time_t), "%z");
timezone = ss.str();
}
} // namespace DevPosture
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