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5044909ca2
curl/lib/version_win32.c
Jay Satiro 5044909ca2 version_win32: use actual version instead of manifested version 
- Use RtlVerifyVersionInfo instead of VerifyVersionInfo, when possible.

Later versions of Windows have normal version functions that compare and
return versions based on the way the application is manifested, instead
of the actual version of Windows the application is running on. We
prefer the actual version of Windows so we'll now call the Rtl variant
of version functions (RtlVerifyVersionInfo) which does a proper
comparison of the actual version.

Reported-by: Wyatt O'Day

Ref: https://github.com/curl/curl/pull/7727

Fixes https://github.com/curl/curl/issues/7742
Closes https://github.com/curl/curl/pull/7810
2021-10-07 03:18:22 -04:00

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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 2016 - 2020, Steve Holme, <steve_holme@hotmail.com>.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
***************************************************************************/
#include "curl_setup.h"
#if defined(WIN32)
#include <curl/curl.h>
#include "version_win32.h"
#include "warnless.h"
/* The last #include files should be: */
#include "curl_memory.h"
#include "memdebug.h"
/* This Unicode version struct works for VerifyVersionInfoW (OSVERSIONINFOEXW)
and RtlVerifyVersionInfo (RTLOSVERSIONINFOEXW) */
struct OUR_OSVERSIONINFOEXW {
ULONG dwOSVersionInfoSize;
ULONG dwMajorVersion;
ULONG dwMinorVersion;
ULONG dwBuildNumber;
ULONG dwPlatformId;
WCHAR szCSDVersion[128];
USHORT wServicePackMajor;
USHORT wServicePackMinor;
USHORT wSuiteMask;
UCHAR wProductType;
UCHAR wReserved;
};
/*
* curlx_verify_windows_version()
*
* This is used to verify if we are running on a specific windows version.
*
* Parameters:
*
* majorVersion [in] - The major version number.
* minorVersion [in] - The minor version number.
* platform [in] - The optional platform identifier.
* condition [in] - The test condition used to specifier whether we are
* checking a version less then, equal to or greater than
* what is specified in the major and minor version
* numbers.
*
* Returns TRUE if matched; otherwise FALSE.
*/
bool curlx_verify_windows_version(const unsigned int majorVersion,
const unsigned int minorVersion,
const PlatformIdentifier platform,
const VersionCondition condition)
{
bool matched = FALSE;
#if defined(CURL_WINDOWS_APP)
/* We have no way to determine the Windows version from Windows apps,
so let's assume we're running on the target Windows version. */
const WORD fullVersion = MAKEWORD(minorVersion, majorVersion);
const WORD targetVersion = (WORD)_WIN32_WINNT;
switch(condition) {
case VERSION_LESS_THAN:
matched = targetVersion < fullVersion;
break;
case VERSION_LESS_THAN_EQUAL:
matched = targetVersion <= fullVersion;
break;
case VERSION_EQUAL:
matched = targetVersion == fullVersion;
break;
case VERSION_GREATER_THAN_EQUAL:
matched = targetVersion >= fullVersion;
break;
case VERSION_GREATER_THAN:
matched = targetVersion > fullVersion;
break;
}
if(matched && (platform == PLATFORM_WINDOWS)) {
/* we're always running on PLATFORM_WINNT */
matched = FALSE;
}
#elif !defined(_WIN32_WINNT) || !defined(_WIN32_WINNT_WIN2K) || \
(_WIN32_WINNT < _WIN32_WINNT_WIN2K)
OSVERSIONINFO osver;
memset(&osver, 0, sizeof(osver));
osver.dwOSVersionInfoSize = sizeof(osver);
/* Find out Windows version */
if(GetVersionEx(&osver)) {
/* Verify the Operating System version number */
switch(condition) {
case VERSION_LESS_THAN:
if(osver.dwMajorVersion < majorVersion ||
(osver.dwMajorVersion == majorVersion &&
osver.dwMinorVersion < minorVersion))
matched = TRUE;
break;
case VERSION_LESS_THAN_EQUAL:
if(osver.dwMajorVersion < majorVersion ||
(osver.dwMajorVersion == majorVersion &&
osver.dwMinorVersion <= minorVersion))
matched = TRUE;
break;
case VERSION_EQUAL:
if(osver.dwMajorVersion == majorVersion &&
osver.dwMinorVersion == minorVersion)
matched = TRUE;
break;
case VERSION_GREATER_THAN_EQUAL:
if(osver.dwMajorVersion > majorVersion ||
(osver.dwMajorVersion == majorVersion &&
osver.dwMinorVersion >= minorVersion))
matched = TRUE;
break;
case VERSION_GREATER_THAN:
if(osver.dwMajorVersion > majorVersion ||
(osver.dwMajorVersion == majorVersion &&
osver.dwMinorVersion > minorVersion))
matched = TRUE;
break;
}
/* Verify the platform identifier (if necessary) */
if(matched) {
switch(platform) {
case PLATFORM_WINDOWS:
if(osver.dwPlatformId != VER_PLATFORM_WIN32_WINDOWS)
matched = FALSE;
break;
case PLATFORM_WINNT:
if(osver.dwPlatformId != VER_PLATFORM_WIN32_NT)
matched = FALSE;
default: /* like platform == PLATFORM_DONT_CARE */
break;
}
}
}
#else
ULONGLONG cm = 0;
struct OUR_OSVERSIONINFOEXW osver;
BYTE majorCondition;
BYTE minorCondition;
BYTE spMajorCondition;
BYTE spMinorCondition;
typedef LONG (APIENTRY *RTLVERIFYVERSIONINFO_FN)
(struct OUR_OSVERSIONINFOEXW *, ULONG, ULONGLONG);
static RTLVERIFYVERSIONINFO_FN pRtlVerifyVersionInfo;
static bool onetime = true; /* safe because first call is during init */
if(onetime) {
pRtlVerifyVersionInfo = CURLX_FUNCTION_CAST(RTLVERIFYVERSIONINFO_FN,
(GetProcAddress(GetModuleHandleA("ntdll"), "RtlVerifyVersionInfo")));
onetime = false;
}
switch(condition) {
case VERSION_LESS_THAN:
majorCondition = VER_LESS;
minorCondition = VER_LESS;
spMajorCondition = VER_LESS_EQUAL;
spMinorCondition = VER_LESS_EQUAL;
break;
case VERSION_LESS_THAN_EQUAL:
majorCondition = VER_LESS_EQUAL;
minorCondition = VER_LESS_EQUAL;
spMajorCondition = VER_LESS_EQUAL;
spMinorCondition = VER_LESS_EQUAL;
break;
case VERSION_EQUAL:
majorCondition = VER_EQUAL;
minorCondition = VER_EQUAL;
spMajorCondition = VER_GREATER_EQUAL;
spMinorCondition = VER_GREATER_EQUAL;
break;
case VERSION_GREATER_THAN_EQUAL:
majorCondition = VER_GREATER_EQUAL;
minorCondition = VER_GREATER_EQUAL;
spMajorCondition = VER_GREATER_EQUAL;
spMinorCondition = VER_GREATER_EQUAL;
break;
case VERSION_GREATER_THAN:
majorCondition = VER_GREATER;
minorCondition = VER_GREATER;
spMajorCondition = VER_GREATER_EQUAL;
spMinorCondition = VER_GREATER_EQUAL;
break;
default:
return FALSE;
}
memset(&osver, 0, sizeof(osver));
osver.dwOSVersionInfoSize = sizeof(osver);
osver.dwMajorVersion = majorVersion;
osver.dwMinorVersion = minorVersion;
if(platform == PLATFORM_WINDOWS)
osver.dwPlatformId = VER_PLATFORM_WIN32_WINDOWS;
else if(platform == PLATFORM_WINNT)
osver.dwPlatformId = VER_PLATFORM_WIN32_NT;
cm = VerSetConditionMask(cm, VER_MAJORVERSION, majorCondition);
cm = VerSetConditionMask(cm, VER_MINORVERSION, minorCondition);
cm = VerSetConditionMask(cm, VER_SERVICEPACKMAJOR, spMajorCondition);
cm = VerSetConditionMask(cm, VER_SERVICEPACKMINOR, spMinorCondition);
if(platform != PLATFORM_DONT_CARE)
cm = VerSetConditionMask(cm, VER_PLATFORMID, VER_EQUAL);
/* Later versions of Windows have version functions that may not return the
real version of Windows unless the application is so manifested. We prefer
the real version always, so we use the Rtl variant of the function when
possible. Note though the function signatures have underlying fundamental
types that are the same, the return values are different. */
if(pRtlVerifyVersionInfo) {
matched = !pRtlVerifyVersionInfo(&osver,
(VER_MAJORVERSION | VER_MINORVERSION |
VER_SERVICEPACKMAJOR | VER_SERVICEPACKMINOR),
cm);
}
else {
matched = !!VerifyVersionInfoW((OSVERSIONINFOEXW *)&osver,
(VER_MAJORVERSION | VER_MINORVERSION |
VER_SERVICEPACKMAJOR | VER_SERVICEPACKMINOR),
cm);
}
#endif
return matched;
}
#endif /* WIN32 */
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