oxmc
102 lines
4.2 KiB
C++
102 lines
4.2 KiB
C++
// *****************************************************************************
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// * This file is part of the FreeFileSync project. It is distributed under *
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// * GNU General Public License: https://www.gnu.org/licenses/gpl-3.0 *
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// * Copyright (C) Zenju (zenju AT freefilesync DOT org) - All Rights Reserved *
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// *****************************************************************************
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#include "sys_version.h"
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#include <iostream>
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#include "file_io.h"
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#include "process_exec.h"
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using namespace zen;
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OsVersionDetail zen::getOsVersionDetail() //throw SysError
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{
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/* prefer lsb_release: lsb_release Distributor ID: Debian
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1. terser OS name Release: 8.11
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2. detailed version number
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/etc/os-release NAME="Debian GNU/Linux"
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VERSION_ID="8" */
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std::wstring osName;
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std::wstring osVersion;
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try
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{
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if (const auto [exitCode, output] = consoleExecute("lsb_release --id -s", std::nullopt); //throw SysError
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exitCode != 0)
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throw SysError(formatSystemError("lsb_release --id",
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replaceCpy(_("Exit code %x"), L"%x", numberTo<std::wstring>(exitCode)), utfTo<std::wstring>(output)));
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else
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osName = utfTo<std::wstring>(trimCpy(output));
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if (const auto [exitCode, output] = consoleExecute("lsb_release --release -s", std::nullopt); //throw SysError
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exitCode != 0)
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throw SysError(formatSystemError("lsb_release --release",
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replaceCpy(_("Exit code %x"), L"%x", numberTo<std::wstring>(exitCode)), utfTo<std::wstring>(output)));
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else
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osVersion = utfTo<std::wstring>(trimCpy(output));
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}
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//lsb_release not available on some systems: https://freefilesync.org/forum/viewtopic.php?t=7191
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catch (SysError&) // => fall back to /etc/os-release: https://www.freedesktop.org/software/systemd/man/os-release.html
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{
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std::string releaseInfo;
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try
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{
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releaseInfo = getFileContent("/etc/os-release", nullptr /*notifyUnbufferedIO*/); //throw FileError
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}
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catch (const FileError& e) { throw SysError(replaceCpy(e.toString(), L"\n\n", L'\n')); } //errors should be further enriched by context info => SysError
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split(releaseInfo, '\n', [&](const std::string_view line)
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{
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if (startsWith(line, "NAME="))
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osName = utfTo<std::wstring>(afterFirst(line, '=', IfNotFoundReturn::none));
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else if (startsWith(line, "VERSION_ID="))
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osVersion = utfTo<std::wstring>(afterFirst(line, '=', IfNotFoundReturn::none));
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//PRETTY_NAME? too wordy! e.g. "Fedora 17 (Beefy Miracle)"
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});
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trim(osName, TrimSide::both, [](const char c) { return c == L'"' || c == L'\''; });
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trim(osVersion, TrimSide::both, [](const char c) { return c == L'"' || c == L'\''; });
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}
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if (osName.empty())
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throw SysError(L"Operating system release could not be determined."); //should never happen!
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//osVersion is usually available, except for Arch Linux: https://freefilesync.org/forum/viewtopic.php?t=7276
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// lsb_release Release is "rolling"
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// /etc/os-release: VERSION_ID is missing, but there is BUILD_ID=rolling instead
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std::vector<std::wstring_view> verDigits = splitCpy<std::wstring_view>(osVersion, L'.', SplitOnEmpty::allow); //e.g. "7.7.1908"
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verDigits.resize(2);
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return
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{
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.version
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{
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stringTo<int>(verDigits[0]),
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stringTo<int>(verDigits[1])
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},
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.osVersionRaw = osVersion,
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.osName = osName,
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};
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}
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OsVersion zen::getOsVersion()
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{
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static const OsVersionDetail verDetail = []
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{
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try
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{
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return getOsVersionDetail(); //throw SysError
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}
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catch (const SysError& e)
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{
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logExtraError(_("Cannot get process information.") + L"\n\n" + e.toString());
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return OsVersionDetail{}; //arrgh, it's a jungle out there: https://freefilesync.org/forum/viewtopic.php?t=7276
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}
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}();
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return verDetail.version;
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}
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