1#ifndef WIN32_LEAN_AND_MEAN
2#define WIN32_LEAN_AND_MEAN
3#endif
4#undef __CRT__NO_INLINE
5#define __CRT__NO_INLINE
6#include <winsock2.h>
7#include <wspiapi.h>
8
9int WINAPI
10WspiapiLookupNode (const char *pszNodeName,
11 int iSocketType, int iProtocol,
12 WORD wPort, WINBOOL bAI_CANONNAME,
13 struct addrinfo **pptResult)
14{
15 int err = 0, cntAlias = 0;
16 char name[NI_MAXHOST] = "";
17 char alias[NI_MAXHOST] = "";
18 char *pname = name, *palias = alias, *tmp = NULL;
19
20 strncpy (pname, pszNodeName, NI_MAXHOST - 1);
21 pname[NI_MAXHOST - 1] = 0;
22 for (;;)
23 {
24 err = WspiapiQueryDNS (pszNodeName, iSocketType, iProtocol, wPort, palias, pptResult);
25 if (err)
26 break;
27 if (*pptResult)
28 break;
29 ++cntAlias;
30 if (strlen (palias) == 0 || !strcmp (pname, palias) || cntAlias == 16)
31 {
32 err = EAI_FAIL;
33 break;
34 }
35 WspiapiSwap(pname, palias, tmp);
36 }
37 if (!err && bAI_CANONNAME)
38 {
39 (*pptResult)->ai_canonname = WspiapiStrdup (palias);
40 if (!(*pptResult)->ai_canonname)
41 err = EAI_MEMORY;
42 }
43 return err;
44}