| #ifndef WIN32_LEAN_AND_MEAN |
| #define WIN32_LEAN_AND_MEAN |
| #endif |
| #include <windows.h> |
| #undef __CRT__NO_INLINE |
| #define __CRT__NO_INLINE |
| #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 *ptService; |
| WORD wPort; |
| char szBuffer[] = "65535"; |
| char *pszService = szBuffer; |
| struct hostent *ptHost; |
| struct in_addr tAddress; |
| char *pszNode = NULL; |
| char *pc = NULL; |
| |
| if ((!ptSocketAddress) || ((size_t)tSocketLength < sizeof(struct sockaddr))) |
| return EAI_FAIL; |
| if (ptSocketAddress->sa_family != (unsigned short)AF_INET) |
| return EAI_FAMILY; |
| if ((size_t) tSocketLength < sizeof(struct sockaddr_in)) |
| return EAI_FAIL; |
| if (!(pszNodeName && tNodeLength) && !(pszServiceName && tServiceLength)) |
| return EAI_NONAME; |
| if ((iFlags & NI_NUMERICHOST) && (iFlags & NI_NAMEREQD)) |
| return EAI_BADFLAGS; |
| if (pszServiceName && tServiceLength) { |
| wPort = ((struct sockaddr_in *) ptSocketAddress)->sin_port; |
| if(iFlags & NI_NUMERICSERV) { |
| _WSPIAPI_SPRINTF_S_1(szBuffer,_WSPIAPI_COUNTOF(szBuffer),"%u",ntohs(wPort)); |
| } else { |
| ptService = getservbyport(wPort, (iFlags & NI_DGRAM) ? "udp" : NULL); |
| if (ptService && ptService->s_name) { |
| pszService = ptService->s_name; |
| } else { |
| _WSPIAPI_SPRINTF_S_1(szBuffer,_WSPIAPI_COUNTOF(szBuffer),"%u",ntohs(wPort)); |
| } |
| } |
| if (tServiceLength > strlen(pszService)) |
| _WSPIAPI_STRCPY_S(pszServiceName,tServiceLength,pszService); |
| else |
| return EAI_FAIL; |
| } |
| if (pszNodeName && tNodeLength) { |
| tAddress = ((struct sockaddr_in *) ptSocketAddress)->sin_addr; |
| if (iFlags & NI_NUMERICHOST) { |
| pszNode = inet_ntoa(tAddress); |
| } else { |
| ptHost = gethostbyaddr((char *) &tAddress, sizeof(struct in_addr), AF_INET); |
| if(ptHost && ptHost->h_name) { |
| pszNode = ptHost->h_name; |
| if ((iFlags & NI_NOFQDN) && ((pc = strchr(pszNode,'.')) != NULL)) |
| *pc = '\0'; |
| } else { |
| if (iFlags & NI_NAMEREQD) { |
| 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 { |
| pszNode = inet_ntoa(tAddress); |
| } |
| } |
| } |
| if (tNodeLength > strlen(pszNode)) |
| _WSPIAPI_STRCPY_S(pszNodeName,tNodeLength,pszNode); |
| else |
| return EAI_FAIL; |
| } |
| return 0; |
| } |
