1290001Sglebius/*
2290001Sglebius * Copyright (C) 2004, 2007  Internet Systems Consortium, Inc. ("ISC")
3290001Sglebius * Copyright (C) 2002  Internet Software Consortium.
4290001Sglebius *
5290001Sglebius * Permission to use, copy, modify, and/or distribute this software for any
6290001Sglebius * purpose with or without fee is hereby granted, provided that the above
7290001Sglebius * copyright notice and this permission notice appear in all copies.
8290001Sglebius *
9290001Sglebius * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10290001Sglebius * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11290001Sglebius * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12290001Sglebius * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13290001Sglebius * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14290001Sglebius * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15290001Sglebius * PERFORMANCE OF THIS SOFTWARE.
16290001Sglebius */
17290001Sglebius
18290001Sglebius/* $Id: win32os.c,v 1.5 2007/06/19 23:47:19 tbox Exp $ */
19290001Sglebius
20290001Sglebius#include <windows.h>
21290001Sglebius
22290001Sglebius#include <isc/win32os.h>
23290001Sglebius
24290001Sglebiusstatic BOOL bInit = FALSE;
25290001Sglebiusstatic OSVERSIONINFOEX osVer;
26290001Sglebius
27290001Sglebiusstatic void
28290001Sglebiusinitialize_action(void) {
29290001Sglebius	BOOL bSuccess;
30290001Sglebius
31290001Sglebius	if (bInit)
32290001Sglebius		return;
33290001Sglebius	/*
34290001Sglebius	 * NOTE: VC++ 6.0 gets this function declaration wrong
35290001Sglebius	 * so we compensate by casting the argument
36290001Sglebius	 */
37290001Sglebius	osVer.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
38290001Sglebius	bSuccess = GetVersionEx((OSVERSIONINFO *) &osVer);
39290001Sglebius
40290001Sglebius	/*
41290001Sglebius	 * Versions of NT before NT4.0 SP6 did not return the
42290001Sglebius	 * extra info that the EX structure provides and returns
43290001Sglebius	 * a failure so we need to retry with the old structure.
44290001Sglebius	 */
45290001Sglebius	if(!bSuccess) {
46290001Sglebius		osVer.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
47290001Sglebius		bSuccess = GetVersionEx((OSVERSIONINFO *) &osVer);
48290001Sglebius	}
49290001Sglebius	bInit = TRUE;
50290001Sglebius}
51290001Sglebius
52290001Sglebiusunsigned int
53290001Sglebiusisc_win32os_majorversion(void) {
54290001Sglebius	initialize_action();
55290001Sglebius	return ((unsigned int)osVer.dwMajorVersion);
56290001Sglebius}
57290001Sglebius
58290001Sglebiusunsigned int
59290001Sglebiusisc_win32os_minorversion(void) {
60290001Sglebius	initialize_action();
61290001Sglebius	return ((unsigned int)osVer.dwMinorVersion);
62290001Sglebius}
63290001Sglebius
64290001Sglebiusunsigned int
65290001Sglebiusisc_win32os_servicepackmajor(void) {
66290001Sglebius	initialize_action();
67290001Sglebius	return ((unsigned int)osVer.wServicePackMajor);
68290001Sglebius}
69290001Sglebius
70290001Sglebiusunsigned int
71290001Sglebiusisc_win32os_servicepackminor(void) {
72290001Sglebius	initialize_action();
73290001Sglebius	return ((unsigned int)osVer.wServicePackMinor);
74290001Sglebius}
75290001Sglebius
76290001Sglebiusint
77290001Sglebiusisc_win32os_versioncheck(unsigned int major, unsigned int minor,
78290001Sglebius		     unsigned int spmajor, unsigned int spminor) {
79290001Sglebius
80290001Sglebius	initialize_action();
81290001Sglebius
82290001Sglebius	if (major < isc_win32os_majorversion())
83290001Sglebius		return (1);
84290001Sglebius	if (major > isc_win32os_majorversion())
85290001Sglebius		return (-1);
86290001Sglebius	if (minor < isc_win32os_minorversion())
87290001Sglebius		return (1);
88290001Sglebius	if (minor > isc_win32os_minorversion())
89290001Sglebius		return (-1);
90290001Sglebius	if (spmajor < isc_win32os_servicepackmajor())
91290001Sglebius		return (1);
92290001Sglebius	if (spmajor > isc_win32os_servicepackmajor())
93290001Sglebius		return (-1);
94290001Sglebius	if (spminor < isc_win32os_servicepackminor())
95290001Sglebius		return (1);
96290001Sglebius	if (spminor > isc_win32os_servicepackminor())
97290001Sglebius		return (-1);
98290001Sglebius
99290001Sglebius	/* Exact */
100290001Sglebius	return (0);
101290001Sglebius}