win32: Fixed use of deprecated function 'GetVersionInfoEx' for VC12

Starting with Visual Studio 2013 (VC12) and Windows 8.1 the
GetVersionInfoEx() function has been marked as deprecated and it's
return value atered. Updated connect.c and curl_sspi.c to use
VerifyVersionInfo() where possible, which has been available since
Windows 2000.

2 files changed, 54 insertions, 10 deletions

diff --git a/lib/connect.c b/lib/connect.c
index 0816af2d4..16ad524df 100644
--- a/lib/connect.c
+++ b/lib/connect.c
@@ -916,19 +916,38 @@ void Curl_sndbufset(curl_socket_t sockfd)
   int val = CURL_MAX_WRITE_SIZE + 32;
   int curval = 0;
   int curlen = sizeof(curval);
+  DWORD majorVersion = 6;
 
-  OSVERSIONINFO osver;
   static int detectOsState = DETECT_OS_NONE;
 
   if(detectOsState == DETECT_OS_NONE) {
+#if !defined(VerifyVersionInfo)
+    OSVERSIONINFO osver;
+
     memset(&osver, 0, sizeof(osver));
     osver.dwOSVersionInfoSize = sizeof(osver);
+
     detectOsState = DETECT_OS_PREVISTA;
     if(GetVersionEx(&osver)) {
-      if(osver.dwMajorVersion >= 6)
+      if(osver.dwMajorVersion >= majorVersion)
         detectOsState = DETECT_OS_VISTA_OR_LATER;
     }
+#else
+    ULONGLONG majorVersionMask;
+    OSVERSIONINFOEX osver;
+
+    memset(&osver, 0, sizeof(osver));
+    osver.dwOSVersionInfoSize = sizeof(osver);
+    osver.dwMajorVersion = majorVersion;
+    majorVersionMask = VerSetConditionMask(0, VER_MAJORVERSION, VER_EQUAL);
+
+    if(VerifyVersionInfo(&osver, VER_MAJORVERSION, majorVersionMask))
+      detectOsState = DETECT_OS_VISTA_OR_LATER;
+    else
+      detectOsState = DETECT_OS_PREVISTA;
+#endif
   }
+
   if(detectOsState == DETECT_OS_VISTA_OR_LATER)
     return;
 
@@ -940,7 +959,6 @@ void Curl_sndbufset(curl_socket_t sockfd)
 }
 #endif
 
-
 /*
  * singleipconnect()
  *
diff --git a/lib/curl_sspi.c b/lib/curl_sspi.c
index e747d86b1..5a48e4943 100644
--- a/lib/curl_sspi.c
+++ b/lib/curl_sspi.c
@@ -68,25 +68,51 @@ PSecurityFunctionTable s_pSecFn = NULL;
  */
 CURLcode Curl_sspi_global_init(void)
 {
-  OSVERSIONINFO osver;
+  bool securityDll = FALSE;
   INITSECURITYINTERFACE_FN pInitSecurityInterface;
 
   /* If security interface is not yet initialized try to do this */
   if(!s_hSecDll) {
+    /* Security Service Provider Interface (SSPI) functions are located in
+     * security.dll on WinNT 4.0 and in secur32.dll on Win9x. Win2K and XP
+     * have both these DLLs (security.dll forwards calls to secur32.dll) */
+    DWORD majorVersion = 4;
+    DWORD platformId = VER_PLATFORM_WIN32_NT;
+
+#if !defined(VerifyVersionInfo)
+    OSVERSIONINFO osver;
 
-    /* Find out Windows version */
     memset(&osver, 0, sizeof(osver));
     osver.dwOSVersionInfoSize = sizeof(osver);
+
+    /* Find out Windows version */
     if(!GetVersionEx(&osver))
       return CURLE_FAILED_INIT;
 
-    /* Security Service Provider Interface (SSPI) functions are located in
-     * security.dll on WinNT 4.0 and in secur32.dll on Win9x. Win2K and XP
-     * have both these DLLs (security.dll forwards calls to secur32.dll) */
+    /* Verify the major version number == 4 and platform id == WIN_NT */
+    if(osver.dwMajorVersion == majorVersion &&
+       osver.dwPlatformId == platformId)
+      securityDll = TRUE;
+#else
+    ULONGLONG majorVersionMask;
+    ULONGLONG platformIdMask;
+    OSVERSIONINFOEX osver;
+
+    memset(&osver, 0, sizeof(osver));
+    osver.dwOSVersionInfoSize = sizeof(osver);
+    osver.dwMajorVersion = majorVersion;
+    osver.dwPlatformId = platformId;
+    majorVersionMask = VerSetConditionMask(0, VER_MAJORVERSION, VER_EQUAL);
+    platformIdMask = VerSetConditionMask(0, VER_PLATFORMID, VER_EQUAL);
+
+    /* Verify the major version number == 4 and platform id == WIN_NT */
+    if(VerifyVersionInfo(&osver, VER_MAJORVERSION, majorVersionMask) &&
+       VerifyVersionInfo(&osver, VER_PLATFORMID, platformIdMask))
+      securityDll = TRUE;
+#endif
 
     /* Load SSPI dll into the address space of the calling process */
-    if(osver.dwPlatformId == VER_PLATFORM_WIN32_NT
-      && osver.dwMajorVersion == 4)
+    if(securityDll)
       s_hSecDll = LoadLibrary(TEXT("security.dll"));
     else
       s_hSecDll = LoadLibrary(TEXT("secur32.dll"));