Muldersoft/MUtilities
Muldersoft/MUtilities
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Improved get_real_os_version() function. Now also detects the real build number.

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This commit is contained in:
LoRd_MuldeR 2016-05-15 23:03:38 +02:00
parent 6185f67786
commit cb53f41a01
2 changed files with 90 additions and 26 deletions
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15
include/MUtils/OSSupport.h
View File

@ -49,19 +49,20 @@ namespace MUtils
os_type_t;
//OS version struct
typedef struct _os_info_t
typedef struct _os_version_t
{
unsigned int type;
unsigned int versionMajor;
unsigned int versionMinor;
unsigned int versionBuild;
bool overrideFlag;
MUTILS_API bool operator== (const _os_info_t &rhs) const;
MUTILS_API bool operator!= (const _os_info_t &rhs) const;
MUTILS_API bool operator> (const _os_info_t &rhs) const;
MUTILS_API bool operator>= (const _os_info_t &rhs) const;
MUTILS_API bool operator< (const _os_info_t &rhs) const;
MUTILS_API bool operator<= (const _os_info_t &rhs) const;
MUTILS_API bool operator== (const _os_version_t &rhs) const;
MUTILS_API bool operator!= (const _os_version_t &rhs) const;
MUTILS_API bool operator> (const _os_version_t &rhs) const;
MUTILS_API bool operator>= (const _os_version_t &rhs) const;
MUTILS_API bool operator< (const _os_version_t &rhs) const;
MUTILS_API bool operator<= (const _os_version_t &rhs) const;
}
os_version_t;

101
src/OSSupport_Win32.cpp
View File

@ -284,7 +284,7 @@ g_os_version_lut[] =
{ MUtils::OS::Version::WINDOWS_WIN70, "Windows 7 or Windows Server 2008 R2" }, //7
{ MUtils::OS::Version::WINDOWS_WIN80, "Windows 8 or Windows Server 2012" }, //8
{ MUtils::OS::Version::WINDOWS_WIN81, "Windows 8.1 or Windows Server 2012 R2" }, //8.1
{ MUtils::OS::Version::WINDOWS_WN100, "Windows 10 or Windows Server 2014 (Preview)" }, //10
{ MUtils::OS::Version::WINDOWS_WN100, "Windows 10 or Windows Server 2016" }, //10
{ MUtils::OS::Version::UNKNOWN_OPSYS, "N/A" }
};
@ -319,6 +319,12 @@ namespace MUtils
}
}
static inline DWORD SAFE_ADD(const DWORD &a, const DWORD &b)
{
const DWORD temp = a + b;
return ((temp >= a) && (temp >= b)) ? temp : MAXDWORD;
}
static void initialize_os_version(OSVERSIONINFOEXW *const osInfo)
{
memset(osInfo, 0, sizeof(OSVERSIONINFOEXW));
@ -367,10 +373,9 @@ static bool verify_os_version(const DWORD major, const DWORD minor)
{
OSVERSIONINFOEXW osvi;
DWORDLONG dwlConditionMask = 0;
initialize_os_version(&osvi);
//Initialize the OSVERSIONINFOEX structure
memset(&osvi, 0, sizeof(OSVERSIONINFOEXW));
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXW);
osvi.dwMajorVersion = major;
osvi.dwMinorVersion = minor;
osvi.dwPlatformId = VER_PLATFORM_WIN32_NT;
@ -395,9 +400,40 @@ static bool verify_os_version(const DWORD major, const DWORD minor)
return (ret != FALSE);
}
static bool get_real_os_version(unsigned int *major, unsigned int *minor, bool *pbOverride)
static bool verify_os_build(const DWORD build)
{
*major = *minor = 0;
OSVERSIONINFOEXW osvi;
DWORDLONG dwlConditionMask = 0;
initialize_os_version(&osvi);
//Initialize the OSVERSIONINFOEX structure
osvi.dwBuildNumber = build;
osvi.dwPlatformId = VER_PLATFORM_WIN32_NT;
//Initialize the condition mask
VER_SET_CONDITION(dwlConditionMask, VER_BUILDNUMBER, VER_GREATER_EQUAL);
VER_SET_CONDITION(dwlConditionMask, VER_PLATFORMID, VER_EQUAL);
// Perform the test
const BOOL ret = rtl_verify_version(&osvi, VER_BUILDNUMBER | VER_PLATFORMID, dwlConditionMask);
//Error checking
if (!ret)
{
if (GetLastError() != ERROR_OLD_WIN_VERSION)
{
qWarning("VerifyVersionInfo() system call has failed!");
}
}
return (ret != FALSE);
}
static bool get_real_os_version(unsigned int *major, unsigned int *minor, unsigned int *build, bool *pbOverride)
{
static const DWORD MAX_VERSION = 0xFFFF;
*major = *minor = *build = 0;
*pbOverride = false;
//Initialize local variables
@ -417,35 +453,61 @@ static bool get_real_os_version(unsigned int *major, unsigned int *minor, bool *
{
*major = osvi.dwMajorVersion;
*minor = osvi.dwMinorVersion;
*build = osvi.dwBuildNumber;
}
else
{
qWarning("Not running on Windows NT, unsupported operating system!");
return false;
if (verify_os_version(4, 0))
{
*major = 4;
*build = 1381;
*pbOverride = true;
}
else
{
qWarning("Not running on Windows NT, unsupported operating system!");
return false;
}
}
//Determine the real *major* version first
forever
//Major Version
for (DWORD nextMajor = (*major) + 1; nextMajor <= MAX_VERSION; nextMajor++)
{
const DWORD nextMajor = (*major) + 1;
if(verify_os_version(nextMajor, 0))
if (verify_os_version(nextMajor, 0))
{
*pbOverride = true;
*major = nextMajor;
*minor = 0;
*pbOverride = true;
continue;
}
break;
}
//Now also determine the real *minor* version
forever
//Minor Version
for (DWORD nextMinor = (*minor) + 1; nextMinor <= MAX_VERSION; nextMinor++)
{
const DWORD nextMinor = (*minor) + 1;
if(verify_os_version((*major), nextMinor))
if (verify_os_version((*major), nextMinor))
{
*pbOverride = true;
*minor = nextMinor;
*pbOverride = true;
continue;
}
break;
}
//Build Version
DWORD stepSize = 32768;
for (DWORD nextBuildNo = SAFE_ADD((*build), stepSize); (*build) < MAXDWORD; nextBuildNo = SAFE_ADD((*build), stepSize))
{
if (verify_os_build(nextBuildNo))
{
*build = nextBuildNo;
*pbOverride = true;
continue;
}
if (stepSize > 1)
{
stepSize = stepSize / 2;
continue;
}
break;
@ -474,12 +536,13 @@ const MUtils::OS::Version::os_version_t &MUtils::OS::os_version(void)
}
//Detect OS version
unsigned int major, minor; bool overrideFlg;
if(get_real_os_version(&major, &minor, &overrideFlg))
unsigned int major, minor, build; bool overrideFlg;
if(get_real_os_version(&major, &minor, &build, &overrideFlg))
{
g_os_version_info.type = Version::OS_WINDOWS;
g_os_version_info.versionMajor = major;
g_os_version_info.versionMinor = minor;
g_os_version_info.versionBuild = build;
g_os_version_info.overrideFlag = overrideFlg;
}
else