1 /*
2 * Copyright (c) 2007-2009, 2014, 2016-2017 Paul Mattes.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the names of Paul Mattes nor the names of his contributors
13 * may be used to endorse or promote products derived from this software
14 * without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY PAUL MATTES "AS IS" AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL PAUL MATTES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 /*
29 * winvers.c
30 * A Windows console-based 3270 Terminal Emulator
31 * OS version query
32 */
33
34 #include "globals.h"
35
36 #include "winvers.h"
37
38 #if defined(__GNUC__) /*[*/
39 /* MinGW doesn't have IsWindowsVersionOrGreater(). */
IsWindowsVersionOrGreater(WORD major_version,WORD minor_version,WORD service_pack_major)40 BOOL IsWindowsVersionOrGreater(WORD major_version, WORD minor_version,
41 WORD service_pack_major)
42 {
43 OSVERSIONINFOEX version_info;
44 DWORDLONG condition_mask = 0;
45
46 memset(&version_info, 0, sizeof(OSVERSIONINFOEX));
47 version_info.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
48 version_info.dwMajorVersion = major_version;
49 version_info.dwMinorVersion = minor_version;
50 version_info.wServicePackMajor = service_pack_major;
51 VER_SET_CONDITION(condition_mask, VER_MAJORVERSION, VER_GREATER_EQUAL);
52 VER_SET_CONDITION(condition_mask, VER_MINORVERSION, VER_GREATER_EQUAL);
53 VER_SET_CONDITION(condition_mask, VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
54 return VerifyVersionInfo(&version_info,
55 VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR,
56 condition_mask);
57 }
58 #endif /*]*/
59
60 int
get_version_info(void)61 get_version_info(void)
62 {
63 /*
64 * Enforce our version requirements explicitly, though chances are
65 * missing DLL entry points will cause us to fall over long before we
66 * get to here.
67 */
68 if (!IsWindowsVersionOrGreater(5, 1, 0)) {
69 fprintf(stderr, "Minimum supported Windows version is Windows XP "
70 "(NT 5.1)\n");
71 return -1;
72 }
73
74 return 0;
75 }
76
77 /* Returns true if running under Wine. */
78 bool
is_wine(void)79 is_wine(void)
80 {
81 static const char *(CDECL *pwine_get_version)(void);
82 HMODULE hntdll = GetModuleHandle("ntdll.dll");
83 if (!hntdll) {
84 return false;
85 }
86
87 pwine_get_version = (void *)GetProcAddress(hntdll, "wine_get_version");
88 return pwine_get_version != NULL;
89 }
90