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/* Copyright (c) 2003-2004, Roger Dingledine
* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
* Copyright (c) 2007-2020, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* \file uname.c
* \brief Look up a description of the operating system.
**/
#include "orconfig.h"
#include "lib/osinfo/uname.h"
#include "lib/string/compat_string.h"
#include "lib/string/printf.h"
#ifdef HAVE_UNAME
#include <sys/utsname.h>
#endif
#ifdef _WIN32
#include <windows.h>
#endif
#include <string.h>
/** Hold the result of our call to <b>uname</b>. */
static char uname_result[256];
/** True iff uname_result is set. */
static int uname_result_is_set = 0;
#ifdef _WIN32
/** Table to map claimed windows versions into human-readable windows
* versions. */
static struct {
unsigned major;
unsigned minor;
const char *client_version;
const char *server_version;
} win_version_table[] = {
/* This table must be sorted in descending order.
* Sources:
* https://en.wikipedia.org/wiki/List_of_Microsoft_Windows_versions
* https://docs.microsoft.com/en-us/windows/desktop/api/winnt/
* ns-winnt-_osversioninfoexa#remarks
*/
/* Windows Server 2019 is indistinguishable from Windows Server 2016
* using GetVersionEx().
{ 10, 0, NULL, "Windows Server 2019" }, */
// clang-format off
{ 10, 0, "Windows 10", "Windows Server 2016" },
{ 6, 3, "Windows 8.1", "Windows Server 2012 R2" },
{ 6, 2, "Windows 8", "Windows Server 2012" },
{ 6, 1, "Windows 7", "Windows Server 2008 R2" },
{ 6, 0, "Windows Vista", "Windows Server 2008" },
{ 5, 2, "Windows XP Professional", "Windows Server 2003" },
/* Windows XP did not have a server version, but we need something here */
{ 5, 1, "Windows XP", "Windows XP Server" },
{ 5, 0, "Windows 2000 Professional", "Windows 2000 Server" },
/* Earlier versions are not supported by GetVersionEx(). */
{ 0, 0, NULL, NULL }
// clang-format on
};
#endif /* defined(_WIN32) */
/** Return a pointer to a description of our platform.
*/
MOCK_IMPL(const char *,
get_uname,(void))
{
#ifdef HAVE_UNAME
struct utsname u;
#endif
if (!uname_result_is_set) {
#ifdef HAVE_UNAME
if (uname(&u) != -1) {
/* (Linux says 0 is success, Solaris says 1 is success) */
strlcpy(uname_result, u.sysname, sizeof(uname_result));
} else
#endif /* defined(HAVE_UNAME) */
{
#ifdef _WIN32
OSVERSIONINFOEX info;
int i;
int is_client = 0;
int is_server = 0;
const char *plat = NULL;
memset(&info, 0, sizeof(info));
info.dwOSVersionInfoSize = sizeof(info);
if (! GetVersionEx((LPOSVERSIONINFO)&info)) {
strlcpy(uname_result, "Bizarre version of Windows where GetVersionEx"
" doesn't work.", sizeof(uname_result));
uname_result_is_set = 1;
return uname_result;
}
#ifdef VER_NT_SERVER
if (info.wProductType == VER_NT_SERVER ||
info.wProductType == VER_NT_DOMAIN_CONTROLLER) {
is_server = 1;
} else {
is_client = 1;
}
#endif /* defined(VER_NT_SERVER) */
/* Search the version table for a matching version */
for (i=0; win_version_table[i].major>0; ++i) {
if (win_version_table[i].major == info.dwMajorVersion &&
win_version_table[i].minor == info.dwMinorVersion) {
if (is_server) {
plat = win_version_table[i].server_version;
} else {
/* Use client versions for clients, and when we don't know if it
* is a client or a server. */
plat = win_version_table[i].client_version;
}
break;
}
}
if (plat) {
strlcpy(uname_result, plat, sizeof(uname_result));
} else {
if (info.dwMajorVersion > win_version_table[0].major ||
(info.dwMajorVersion == win_version_table[0].major &&
info.dwMinorVersion > win_version_table[0].minor))
tor_snprintf(uname_result, sizeof(uname_result),
"Very recent version of Windows [major=%d,minor=%d]",
(int)info.dwMajorVersion,(int)info.dwMinorVersion);
else
tor_snprintf(uname_result, sizeof(uname_result),
"Unrecognized version of Windows [major=%d,minor=%d]",
(int)info.dwMajorVersion,(int)info.dwMinorVersion);
}
/* Now append extra information to the name.
*
* Microsoft's API documentation says that on Windows 8.1 and later,
* GetVersionEx returns Windows 8 (6.2) for applications without an
* app compatibility manifest (including tor's default build).
*
* But in our testing, we have seen the actual Windows version on
* Windows Server 2012 R2, even without a manifest. */
if (info.dwMajorVersion > 6 ||
(info.dwMajorVersion == 6 && info.dwMinorVersion >= 2)) {
/* When GetVersionEx() returns Windows 8, the actual OS may be any
* later version. */
strlcat(uname_result, " [or later]", sizeof(uname_result));
}
/* When we don't know if the OS is a client or server version, we use
* the client version, and this qualifier. */
if (!is_server && !is_client) {
strlcat(uname_result, " [client or server]", sizeof(uname_result));
}
#else /* !defined(_WIN32) */
/* LCOV_EXCL_START -- can't provoke uname failure */
strlcpy(uname_result, "Unknown platform", sizeof(uname_result));
/* LCOV_EXCL_STOP */
#endif /* defined(_WIN32) */
}
uname_result_is_set = 1;
}
return uname_result;
}
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