From fe8d423208cbb6e9fc4957824926f289d419aebc Mon Sep 17 00:00:00 2001
From: Scott Gasch <scott.gasch@gmail.com>
Date: Wed, 1 Jun 2016 19:18:42 -0700
Subject: Initial checkin.

---
 version/version.c | 249 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 249 insertions(+)
 create mode 100644 version/version.c

(limited to 'version/version.c')

diff --git a/version/version.c b/version/version.c
new file mode 100644
index 0000000..0338091
--- /dev/null
+++ b/version/version.c
@@ -0,0 +1,249 @@
+/*++
+
+   >>> This code is released to the public domain.  No warranty
+       whatsoever is provided.  Use it at your own risk. <<<
+
+Module Name:
+
+    version.c
+
+Abstract:
+
+    Determine the Windows version number running and set the
+    errorlevel appropriately.  Intended for use with batch scripts.
+
+Author:
+
+    Scott Gasch (scott@wannabe.guru.org) 22 Aug 2002
+
+Revision History:
+
+--*/
+
+#include <stdlib.h> 
+#include <stdio.h>
+#include <windows.h>
+
+//
+// This code _should_ run on win9x/ME or any version of NT.  Note: I have
+// not personally tested it on 9x/ME though.  It prints out a message on
+// stdout about which version of the windows operating system is running
+// and sets the errorlevel to one of the values below accordingly.  Might
+// be useful in your CMD/BAT script...
+// 
+#define EXIT_WIN95            (1)
+#define EXIT_WIN98            (2)
+#define EXIT_WINME            (3)
+#define EXIT_CONSUMER_OTHER   (4)
+#define EXIT_NT351            (5)
+#define EXIT_NT3OTHER         (6)
+#define EXIT_NT4              (7)
+#define EXIT_NT4OTHER         (8)
+#define EXIT_WIN2K            (9)
+#define EXIT_WINXP            (10)
+#define EXIT_WIN_SERVER_2003  (11)
+#define EXIT_NT5OTHER         (12)
+#define EXIT_VISTA            (13)
+#define EXIT_UNKNOWN          (14)
+
+CHAR *g_szWindowsNames[] = 
+{
+    "Not Used",
+    "Windows95",
+    "Windows98",
+    "WindowsME",
+    "Unknown Consumer Windows Release",
+    "Windows NT",
+    "Unknown Windows NT",
+    "Windows NT",
+    "Unknown Windows NT",
+    "Windows 2000",
+    "WindowsXP",
+    "Windows Server 2003",
+    "Unknown Windows NT",
+    "Longhorn Prerelease",
+    "Unknown Operating System"
+};
+
+typedef BOOL (*FUNCTION_PTR)(OSVERSIONINFO *);
+
+
+BOOL 
+TryWinNT(DWORD *pdwMajor, DWORD *pdwMinor, DWORD *pdwPlatform)
+/*++
+
+Routine description:
+
+    GetVersionEx is not present on downlevel versions of Windows.
+    Deal with this by using LoadLibrary/GetProcAddress.
+
+Parameters:
+
+    DWORD *pdwMajor,
+    DWORD *pdwMinor,
+    DWORD *pdwPlatform
+
+Return value:
+
+    BOOL
+
+--*/
+{
+    FUNCTION_PTR p;
+    BOOL fRet = FALSE;
+    HMODULE h = NULL;
+    OSVERSIONINFOEXA osvi;
+    
+    h = LoadLibraryA("kernel32.dll");
+    if (NULL == h)
+    {
+        fprintf(stderr, "Failed to load kernel32.dll, error=%u.\n", 
+                GetLastError());
+        goto end;
+    }
+        
+    p = (FUNCTION_PTR)GetProcAddress(h, "GetVersionExA");
+    if (NULL == p)
+    {
+        fprintf(stderr, "GetProcAddress for GetVersionEx failed, error=%u.\n",
+                GetLastError());
+        goto end;
+    }
+
+    ZeroMemory(&osvi, sizeof(osvi));
+    osvi.dwOSVersionInfoSize = sizeof(osvi);
+    fRet = (*p)((OSVERSIONINFO *)&osvi);
+    if (FALSE == fRet)
+    {
+        fprintf(stderr, "GetVersionEx failed, error=%u.\n", GetLastError());
+        goto end;
+    }
+    *pdwMajor = osvi.dwMajorVersion;
+    *pdwMinor = osvi.dwMinorVersion;
+    *pdwPlatform = osvi.dwPlatformId;
+
+ end:
+    if (NULL != h)
+    {
+        FreeLibrary(h);
+    }
+    
+    return(fRet);
+}
+
+
+int __cdecl 
+main(void)
+/*++
+
+Routine description:
+
+    Program entry point.
+
+Parameters:
+
+    void
+
+Return value:
+
+    int __cdecl
+
+--*/
+{
+    DWORD dwMajor, dwMinor, dwPlatform;
+    DWORD dwVersion;
+    int iRet = EXIT_UNKNOWN;
+
+    //
+    // This call should be available on all versions of Windows
+    // 
+    dwVersion = GetVersion();
+    if ((dwVersion & 0x80000000) ||
+        (FALSE == TryWinNT(&dwMajor, &dwMinor, &dwPlatform)))
+    {
+        dwMajor = (DWORD)(LOBYTE(LOWORD(dwVersion)));
+        dwMinor = (DWORD)(HIBYTE(LOWORD(dwVersion)));
+        dwPlatform = VER_PLATFORM_WIN32_WINDOWS;
+    }
+
+    //
+    // Parse results
+    // 
+    if (dwPlatform == VER_PLATFORM_WIN32_NT)
+    {
+        switch(dwMajor)
+        {
+            case 3:
+                iRet = EXIT_NT3OTHER;
+                if (51 == dwMinor)
+                {
+                    iRet = EXIT_NT351;
+                }
+                goto end;
+        
+            case 4:
+                iRet = EXIT_NT4OTHER;
+                if (0 == dwMinor)
+                {
+                    iRet = EXIT_NT4;
+                }
+                goto end;
+        
+            case 5:
+                iRet = EXIT_NT5OTHER;
+                if (0 == dwMinor)
+                {
+                    iRet = EXIT_WIN2K;
+                }
+                else if (1 == dwMinor)
+                {
+                    iRet = EXIT_WINXP;
+                }
+                else if (2 == dwMinor)
+                {
+                    iRet = EXIT_WIN_SERVER_2003;
+                }
+                goto end;
+                
+            case 6:
+                iRet = EXIT_VISTA;
+                goto end;
+                
+            default:
+                goto end;
+        }
+    }
+    else if (dwPlatform == VER_PLATFORM_WIN32_WINDOWS)
+    {
+        switch(dwMajor)
+        {
+            case 4:
+                iRet = EXIT_CONSUMER_OTHER;
+                if (0 == dwMinor)
+                {
+                    iRet = EXIT_WIN95;
+                }
+                else if (10 == dwMinor)
+                {
+                    iRet = EXIT_WIN98;
+                }
+                else if (90 == dwMinor)
+                {
+                    iRet = EXIT_WINME;
+                }
+                goto end;
+                
+            default:
+                goto end;
+        }
+    }
+    
+ end:
+    printf("%s %u.%u -- errorlevel is %d\n",
+           g_szWindowsNames[iRet],
+           dwMajor,
+           dwMinor,
+           iRet);
+    exit(iRet);
+}
+
-- 
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