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// *****************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: https://www.gnu.org/licenses/gpl-3.0 *
// * Copyright (C) Zenju (zenju AT freefilesync DOT org) - All Rights Reserved *
// *****************************************************************************
#include "sys_info.h"
#include "crc.h"
#include "file_access.h"
#include "sys_version.h"
#include "symlink_target.h"
#include "file_io.h"
#include <ifaddrs.h>
#include <net/if.h> //IFF_LOOPBACK
#include <netpacket/packet.h> //sockaddr_ll
#include "process_exec.h"
#include <unistd.h> //getuid()
#include <pwd.h> //getpwuid_r()
using namespace zen;
std::wstring zen::getUserName() //throw FileError
{
const uid_t userIdNo = ::getuid(); //"real user ID"; never fails
std::vector<char> buffer(std::max<long>(10000, ::sysconf(_SC_GETPW_R_SIZE_MAX))); //::sysconf may return long(-1)
struct passwd buffer2 = {};
struct passwd* pwsEntry = nullptr;
if (::getpwuid_r(userIdNo, &buffer2, &buffer[0], buffer.size(), &pwsEntry) != 0) //getlogin() is deprecated and not working on Ubuntu at all!!!
THROW_LAST_FILE_ERROR(_("Cannot get process information."), "getpwuid_r");
if (!pwsEntry)
throw FileError(_("Cannot get process information."), L"no login found"); //should not happen?
return utfTo<std::wstring>(pwsEntry->pw_name);
}
namespace
{
}
ComputerModel zen::getComputerModel() //throw FileError
{
ComputerModel cm;
try
{
auto tryGetInfo = [](const Zstring& filePath)
{
if (!fileAvailable(filePath))
return std::wstring();
try
{
const std::string stream = getFileContent(filePath, nullptr /*notifyUnbufferedIO*/); //throw FileError
return utfTo<std::wstring>(trimCpy(stream));
}
catch (const FileError& e) { throw SysError(replaceCpy(e.toString(), L"\n\n", L'\n')); } //errors should be further enriched by context info => SysError
};
cm.model = tryGetInfo("/sys/devices/virtual/dmi/id/product_name"); //throw SysError
cm.vendor = tryGetInfo("/sys/devices/virtual/dmi/id/sys_vendor"); //
//clean up:
cm.model = beforeFirst(cm.model, L'\u00ff', IfNotFoundReturn::all); //fix broken BIOS entries:
cm.vendor = beforeFirst(cm.vendor, L'\u00ff', IfNotFoundReturn::all); //0xff can be considered 0
for (const char* dummyModel :
{
"To Be Filled By O.E.M.", "Default string", "$(DEFAULT_STRING)", "Undefined", "empty", "O.E.M", "OEM", "NA",
"System Product Name", "Please change product name", "INVALID",
})
if (equalAsciiNoCase(cm.model, dummyModel))
{
cm.model.clear();
break;
}
for (const char* dummyVendor :
{
"To Be Filled By O.E.M.", "Default string", "$(DEFAULT_STRING)", "Undefined", "empty", "O.E.M", "OEM", "NA",
"System manufacturer", "OEM Manufacturer",
})
if (equalAsciiNoCase(cm.vendor, dummyVendor))
{
cm.vendor.clear();
break;
}
return cm;
}
catch (const SysError& e) { throw FileError(_("Cannot get process information."), e.toString()); }
}
std::wstring zen::getOsDescription() //throw FileError
{
try
{
const OsVersionDetail verDetail = getOsVersionDetail(); //throw SysError
return trimCpy(verDetail.osName + L' ' + verDetail.osVersionRaw); //e.g. "CentOS 7.8.2003"
}
catch (const SysError& e) { throw FileError(_("Cannot get process information."), e.toString()); }
}
Zstring zen::getRealProcessPath() //throw FileError
{
return getSymlinkRawContent("/proc/self/exe").targetPath; //throw FileError
//path does not contain symlinks => no need for ::realpath()
}
Zstring zen::getUserDownloadsPath() //throw FileError
{
try
{
Zstring cmdLine;
if (getuid() == 0) //nofail; root(0) => consider as request for elevation, NOT impersonation
{
const char* loginUser = getlogin(); //https://linux.die.net/man/3/getlogin
if (!loginUser)
THROW_LAST_SYS_ERROR("getlogin");
cmdLine = Zstring("sudo -u ") + loginUser + " xdg-user-dir DOWNLOAD"; //sudo better be installed :>
}
else
cmdLine = "xdg-user-dir DOWNLOAD";
const auto& [exitCode, output] = consoleExecute(cmdLine, std::nullopt /*timeoutMs*/); //throw SysError
if (exitCode != 0)
throw SysError(formatSystemError(cmdLine.c_str(),
replaceCpy(_("Exit code %x"), L"%x", numberTo<std::wstring>(exitCode)), utfTo<std::wstring>(output)));
const Zstring& downloadsPath = trimCpy(output);
ASSERT_SYSERROR(!downloadsPath.empty());
return downloadsPath;
}
catch (const SysError& e) { throw FileError(_("Cannot get process information."), e.toString()); }
}
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