101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
/*
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* Copyright (C) 2004, 2007 Internet Systems Consortium, Inc. ("ISC")
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* Copyright (C) 2002 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: win32os.c,v 1.5 2007/06/19 23:47:19 tbox Exp $ */
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#include <windows.h>
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#include <isc/win32os.h>
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static BOOL bInit = FALSE;
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static OSVERSIONINFOEX osVer;
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static void
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initialize_action(void) {
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BOOL bSuccess;
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if (bInit)
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return;
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/*
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* NOTE: VC++ 6.0 gets this function declaration wrong
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* so we compensate by casting the argument
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*/
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osVer.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
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bSuccess = GetVersionEx((OSVERSIONINFO *) &osVer);
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/*
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* Versions of NT before NT4.0 SP6 did not return the
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* extra info that the EX structure provides and returns
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* a failure so we need to retry with the old structure.
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*/
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if(!bSuccess) {
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osVer.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
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bSuccess = GetVersionEx((OSVERSIONINFO *) &osVer);
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}
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bInit = TRUE;
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}
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unsigned int
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isc_win32os_majorversion(void) {
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initialize_action();
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return ((unsigned int)osVer.dwMajorVersion);
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}
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unsigned int
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isc_win32os_minorversion(void) {
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initialize_action();
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return ((unsigned int)osVer.dwMinorVersion);
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}
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unsigned int
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isc_win32os_servicepackmajor(void) {
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initialize_action();
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return ((unsigned int)osVer.wServicePackMajor);
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}
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unsigned int
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isc_win32os_servicepackminor(void) {
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initialize_action();
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return ((unsigned int)osVer.wServicePackMinor);
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}
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int
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isc_win32os_versioncheck(unsigned int major, unsigned int minor,
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unsigned int spmajor, unsigned int spminor) {
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initialize_action();
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if (major < isc_win32os_majorversion())
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return (1);
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if (major > isc_win32os_majorversion())
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return (-1);
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if (minor < isc_win32os_minorversion())
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return (1);
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if (minor > isc_win32os_minorversion())
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return (-1);
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if (spmajor < isc_win32os_servicepackmajor())
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return (1);
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if (spmajor > isc_win32os_servicepackmajor())
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return (-1);
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if (spminor < isc_win32os_servicepackminor())
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return (1);
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if (spminor > isc_win32os_servicepackminor())
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return (-1);
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/* Exact */
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return (0);
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} |