| #ifndef WIN32_LEAN_AND_MEAN |
| #define WIN32_LEAN_AND_MEAN |
| #endif |
| #undef __CRT__NO_INLINE |
| #define __CRT__NO_INLINE |
| #include <winsock2.h> |
| #include <wspiapi.h> |
| |
| int WINAPI |
| WspiapiLegacyGetNameInfo (const struct sockaddr *ptSocketAddress, |
| socklen_t tSocketLength, |
| char *pszNodeName, size_t tNodeLength, |
| char *pszServiceName, size_t tServiceLength, |
| int iFlags) |
| { |
| struct servent *svc; |
| WORD port; |
| char str[] = "65535"; |
| char *pstr = str; |
| struct hostent *phost; |
| struct in_addr l_inaddr; |
| char *pnode = NULL, *pc = NULL; |
| |
| if (!ptSocketAddress || tSocketLength < (int) sizeof (struct sockaddr)) |
| return EAI_FAIL; |
| if (ptSocketAddress->sa_family != AF_INET) |
| return EAI_FAMILY; |
| if (tSocketLength < (int) sizeof (struct sockaddr_in)) |
| return EAI_FAIL; |
| if (!(pszNodeName && tNodeLength) && !(pszServiceName && tServiceLength)) |
| return EAI_NONAME; |
| if ((iFlags & NI_NUMERICHOST) != 0 && (iFlags & NI_NAMEREQD) != 0) |
| return EAI_BADFLAGS; |
| if (pszServiceName && tServiceLength) |
| { |
| port = ((struct sockaddr_in *) ptSocketAddress)->sin_port; |
| if (iFlags & NI_NUMERICSERV) |
| sprintf (str, "%u", ntohs (port)); |
| else |
| { |
| svc = getservbyport(port, (iFlags & NI_DGRAM) ? "udp" : NULL); |
| if (svc && svc->s_name) |
| pstr = svc->s_name; |
| else |
| sprintf (str, "%u", ntohs (port)); |
| } |
| if (tServiceLength > strlen (pstr)) |
| strcpy (pszServiceName, pstr); |
| else |
| return EAI_FAIL; |
| } |
| if (pszNodeName && tNodeLength) |
| { |
| l_inaddr = ((struct sockaddr_in *) ptSocketAddress)->sin_addr; |
| if (iFlags & NI_NUMERICHOST) |
| pnode = inet_ntoa (l_inaddr); |
| else |
| { |
| phost = gethostbyaddr ((char *) &l_inaddr, sizeof (struct in_addr), AF_INET); |
| if (phost && phost->h_name) |
| { |
| pnode = phost->h_name; |
| if ((iFlags & NI_NOFQDN) != 0 && ((pc = strchr (pnode,'.')) != NULL)) |
| *pc = 0; |
| } |
| else |
| { |
| if ((iFlags & NI_NAMEREQD) != 0) |
| { |
| switch(WSAGetLastError()) |
| { |
| case WSAHOST_NOT_FOUND: return EAI_NONAME; |
| case WSATRY_AGAIN: return EAI_AGAIN; |
| case WSANO_RECOVERY: return EAI_FAIL; |
| default: return EAI_NONAME; |
| } |
| } |
| else |
| pnode = inet_ntoa (l_inaddr); |
| } |
| } |
| if (tNodeLength > strlen (pnode)) |
| strcpy (pszNodeName, pnode); |
| else |
| return EAI_FAIL; |
| } |
| return 0; |
| } |
