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
10WspiapiQueryDNS(const char *pszNodeName,
11 int iSocketType, int iProtocol,
12 WORD wPort, char pszAlias[NI_MAXHOST],
13 struct addrinfo **pptResult)
14{
15 struct addrinfo **paddrinfo = pptResult;
16 struct hostent *phost = NULL;
17 char **h;
18
19 *paddrinfo = NULL;
20 pszAlias[0] = 0;
21 phost = gethostbyname (pszNodeName);
22 if (phost)
23 {
24 if (phost->h_addrtype == AF_INET && phost->h_length == sizeof(struct in_addr))
25 {
26 for (h = phost->h_addr_list; *h != NULL; h++)
27 {
28 *paddrinfo = WspiapiNewAddrInfo (iSocketType, iProtocol, wPort,
29 ((struct in_addr *) *h)->s_addr);
30 if (!*paddrinfo)
31 return EAI_MEMORY;
32 paddrinfo = &((*paddrinfo)->ai_next);
33 }
34 }
35 strncpy (pszAlias, phost->h_name, NI_MAXHOST - 1);
36 pszAlias[NI_MAXHOST - 1] = 0;
37 return 0;
38 }
39 switch(WSAGetLastError())
40 {
41 case WSAHOST_NOT_FOUND: break;
42 case WSATRY_AGAIN: return EAI_AGAIN;
43 case WSANO_RECOVERY: return EAI_FAIL;
44 case WSANO_DATA: return EAI_NODATA;
45 default: break;
46 }
47 return EAI_NONAME;
48}