/** * WinPR: Windows Portable Runtime * Windows Sockets (Winsock) * * Copyright 2012 Marc-Andre Moreau * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #ifdef HAVE_UNISTD_H #include #endif #ifndef _WIN32 #include #endif /** * ws2_32.dll: * * __WSAFDIsSet * accept * bind * closesocket * connect * freeaddrinfo * FreeAddrInfoEx * FreeAddrInfoExW * FreeAddrInfoW * getaddrinfo * GetAddrInfoExA * GetAddrInfoExCancel * GetAddrInfoExOverlappedResult * GetAddrInfoExW * GetAddrInfoW * gethostbyaddr * gethostbyname * gethostname * GetHostNameW * getnameinfo * GetNameInfoW * getpeername * getprotobyname * getprotobynumber * getservbyname * getservbyport * getsockname * getsockopt * htonl * htons * inet_addr * inet_ntoa * inet_ntop * inet_pton * InetNtopW * InetPtonW * ioctlsocket * listen * ntohl * ntohs * recv * recvfrom * select * send * sendto * SetAddrInfoExA * SetAddrInfoExW * setsockopt * shutdown * socket * WahCloseApcHelper * WahCloseHandleHelper * WahCloseNotificationHandleHelper * WahCloseSocketHandle * WahCloseThread * WahCompleteRequest * WahCreateHandleContextTable * WahCreateNotificationHandle * WahCreateSocketHandle * WahDestroyHandleContextTable * WahDisableNonIFSHandleSupport * WahEnableNonIFSHandleSupport * WahEnumerateHandleContexts * WahInsertHandleContext * WahNotifyAllProcesses * WahOpenApcHelper * WahOpenCurrentThread * WahOpenHandleHelper * WahOpenNotificationHandleHelper * WahQueueUserApc * WahReferenceContextByHandle * WahRemoveHandleContext * WahWaitForNotification * WahWriteLSPEvent * WEP * WPUCompleteOverlappedRequest * WPUGetProviderPathEx * WSAAccept * WSAAddressToStringA * WSAAddressToStringW * WSAAdvertiseProvider * WSAAsyncGetHostByAddr * WSAAsyncGetHostByName * WSAAsyncGetProtoByName * WSAAsyncGetProtoByNumber * WSAAsyncGetServByName * WSAAsyncGetServByPort * WSAAsyncSelect * WSACancelAsyncRequest * WSACancelBlockingCall * WSACleanup * WSACloseEvent * WSAConnect * WSAConnectByList * WSAConnectByNameA * WSAConnectByNameW * WSACreateEvent * WSADuplicateSocketA * WSADuplicateSocketW * WSAEnumNameSpaceProvidersA * WSAEnumNameSpaceProvidersExA * WSAEnumNameSpaceProvidersExW * WSAEnumNameSpaceProvidersW * WSAEnumNetworkEvents * WSAEnumProtocolsA * WSAEnumProtocolsW * WSAEventSelect * WSAGetLastError * WSAGetOverlappedResult * WSAGetQOSByName * WSAGetServiceClassInfoA * WSAGetServiceClassInfoW * WSAGetServiceClassNameByClassIdA * WSAGetServiceClassNameByClassIdW * WSAHtonl * WSAHtons * WSAInstallServiceClassA * WSAInstallServiceClassW * WSAIoctl * WSAIsBlocking * WSAJoinLeaf * WSALookupServiceBeginA * WSALookupServiceBeginW * WSALookupServiceEnd * WSALookupServiceNextA * WSALookupServiceNextW * WSANSPIoctl * WSANtohl * WSANtohs * WSAPoll * WSAProviderCompleteAsyncCall * WSAProviderConfigChange * WSApSetPostRoutine * WSARecv * WSARecvDisconnect * WSARecvFrom * WSARemoveServiceClass * WSAResetEvent * WSASend * WSASendDisconnect * WSASendMsg * WSASendTo * WSASetBlockingHook * WSASetEvent * WSASetLastError * WSASetServiceA * WSASetServiceW * WSASocketA * WSASocketW * WSAStartup * WSAStringToAddressA * WSAStringToAddressW * WSAUnadvertiseProvider * WSAUnhookBlockingHook * WSAWaitForMultipleEvents * WSCDeinstallProvider * WSCDeinstallProviderEx * WSCEnableNSProvider * WSCEnumProtocols * WSCEnumProtocolsEx * WSCGetApplicationCategory * WSCGetApplicationCategoryEx * WSCGetProviderInfo * WSCGetProviderPath * WSCInstallNameSpace * WSCInstallNameSpaceEx * WSCInstallNameSpaceEx2 * WSCInstallProvider * WSCInstallProviderAndChains * WSCInstallProviderEx * WSCSetApplicationCategory * WSCSetApplicationCategoryEx * WSCSetProviderInfo * WSCUnInstallNameSpace * WSCUnInstallNameSpaceEx2 * WSCUpdateProvider * WSCUpdateProviderEx * WSCWriteNameSpaceOrder * WSCWriteProviderOrder * WSCWriteProviderOrderEx */ #ifdef _WIN32 #if (_WIN32_WINNT < 0x0600) PCSTR inet_ntop(INT Family, PVOID pAddr, PSTR pStringBuf, size_t StringBufSize) { if (Family == AF_INET) { struct sockaddr_in in; memset(&in, 0, sizeof(in)); in.sin_family = AF_INET; memcpy(&in.sin_addr, pAddr, sizeof(struct in_addr)); getnameinfo((struct sockaddr*) &in, sizeof(struct sockaddr_in), pStringBuf, StringBufSize, NULL, 0, NI_NUMERICHOST); return pStringBuf; } else if (Family == AF_INET6) { struct sockaddr_in6 in; memset(&in, 0, sizeof(in)); in.sin6_family = AF_INET6; memcpy(&in.sin6_addr, pAddr, sizeof(struct in_addr6)); getnameinfo((struct sockaddr*) &in, sizeof(struct sockaddr_in6), pStringBuf, StringBufSize, NULL, 0, NI_NUMERICHOST); return pStringBuf; } return NULL; } #endif /* (_WIN32_WINNT < 0x0600) */ #else /* _WIN32 */ #include #include #include #include #include #include #include #include #ifndef MSG_NOSIGNAL #define MSG_NOSIGNAL 0 #endif int WSAStartup(WORD wVersionRequired, LPWSADATA lpWSAData) { ZeroMemory(lpWSAData, sizeof(WSADATA)); lpWSAData->wVersion = wVersionRequired; lpWSAData->wHighVersion = MAKEWORD(2, 2); return 0; /* success */ } int WSACleanup(void) { return 0; /* success */ } void WSASetLastError(int iError) { switch (iError) { /* Base error codes */ case WSAEINTR: errno = EINTR; break; case WSAEBADF: errno = EBADF; break; case WSAEACCES: errno = EACCES; break; case WSAEFAULT: errno = EFAULT; break; case WSAEINVAL: errno = EINVAL; break; case WSAEMFILE: errno = EMFILE; break; /* BSD sockets error codes */ case WSAEWOULDBLOCK: errno = EWOULDBLOCK; break; case WSAEINPROGRESS: errno = EINPROGRESS; break; case WSAEALREADY: errno = EALREADY; break; case WSAENOTSOCK: errno = ENOTSOCK; break; case WSAEDESTADDRREQ: errno = EDESTADDRREQ; break; case WSAEMSGSIZE: errno = EMSGSIZE; break; case WSAEPROTOTYPE: errno = EPROTOTYPE; break; case WSAENOPROTOOPT: errno = ENOPROTOOPT; break; case WSAEPROTONOSUPPORT: errno = EPROTONOSUPPORT; break; case WSAESOCKTNOSUPPORT: errno = ESOCKTNOSUPPORT; break; case WSAEOPNOTSUPP: errno = EOPNOTSUPP; break; case WSAEPFNOSUPPORT: errno = EPFNOSUPPORT; break; case WSAEAFNOSUPPORT: errno = EAFNOSUPPORT; break; case WSAEADDRINUSE: errno = EADDRINUSE; break; case WSAEADDRNOTAVAIL: errno = EADDRNOTAVAIL; break; case WSAENETDOWN: errno = ENETDOWN; break; case WSAENETUNREACH: errno = ENETUNREACH; break; case WSAENETRESET: errno = ENETRESET; break; case WSAECONNABORTED: errno = ECONNABORTED; break; case WSAECONNRESET: errno = ECONNRESET; break; case WSAENOBUFS: errno = ENOBUFS; break; case WSAEISCONN: errno = EISCONN; break; case WSAENOTCONN: errno = ENOTCONN; break; case WSAESHUTDOWN: errno = ESHUTDOWN; break; case WSAETOOMANYREFS: errno = ETOOMANYREFS; break; case WSAETIMEDOUT: errno = ETIMEDOUT; break; case WSAECONNREFUSED: errno = ECONNREFUSED; break; case WSAELOOP: errno = ELOOP; break; case WSAENAMETOOLONG: errno = ENAMETOOLONG; break; case WSAEHOSTDOWN: errno = EHOSTDOWN; break; case WSAEHOSTUNREACH: errno = EHOSTUNREACH; break; case WSAENOTEMPTY: errno = ENOTEMPTY; break; #ifdef EPROCLIM case WSAEPROCLIM: errno = EPROCLIM; break; #endif case WSAEUSERS: errno = EUSERS; break; case WSAEDQUOT: errno = EDQUOT; break; case WSAESTALE: errno = ESTALE; break; case WSAEREMOTE: errno = EREMOTE; break; } } int WSAGetLastError(void) { int iError = 0; switch (errno) { /* Base error codes */ case EINTR: iError = WSAEINTR; break; case EBADF: iError = WSAEBADF; break; case EACCES: iError = WSAEACCES; break; case EFAULT: iError = WSAEFAULT; break; case EINVAL: iError = WSAEINVAL; break; case EMFILE: iError = WSAEMFILE; break; /* BSD sockets error codes */ case EWOULDBLOCK: iError = WSAEWOULDBLOCK; break; case EINPROGRESS: iError = WSAEINPROGRESS; break; case EALREADY: iError = WSAEALREADY; break; case ENOTSOCK: iError = WSAENOTSOCK; break; case EDESTADDRREQ: iError = WSAEDESTADDRREQ; break; case EMSGSIZE: iError = WSAEMSGSIZE; break; case EPROTOTYPE: iError = WSAEPROTOTYPE; break; case ENOPROTOOPT: iError = WSAENOPROTOOPT; break; case EPROTONOSUPPORT: iError = WSAEPROTONOSUPPORT; break; case ESOCKTNOSUPPORT: iError = WSAESOCKTNOSUPPORT; break; case EOPNOTSUPP: iError = WSAEOPNOTSUPP; break; case EPFNOSUPPORT: iError = WSAEPFNOSUPPORT; break; case EAFNOSUPPORT: iError = WSAEAFNOSUPPORT; break; case EADDRINUSE: iError = WSAEADDRINUSE; break; case EADDRNOTAVAIL: iError = WSAEADDRNOTAVAIL; break; case ENETDOWN: iError = WSAENETDOWN; break; case ENETUNREACH: iError = WSAENETUNREACH; break; case ENETRESET: iError = WSAENETRESET; break; case ECONNABORTED: iError = WSAECONNABORTED; break; case ECONNRESET: iError = WSAECONNRESET; break; case ENOBUFS: iError = WSAENOBUFS; break; case EISCONN: iError = WSAEISCONN; break; case ENOTCONN: iError = WSAENOTCONN; break; case ESHUTDOWN: iError = WSAESHUTDOWN; break; case ETOOMANYREFS: iError = WSAETOOMANYREFS; break; case ETIMEDOUT: iError = WSAETIMEDOUT; break; case ECONNREFUSED: iError = WSAECONNREFUSED; break; case ELOOP: iError = WSAELOOP; break; case ENAMETOOLONG: iError = WSAENAMETOOLONG; break; case EHOSTDOWN: iError = WSAEHOSTDOWN; break; case EHOSTUNREACH: iError = WSAEHOSTUNREACH; break; case ENOTEMPTY: iError = WSAENOTEMPTY; break; #ifdef EPROCLIM case EPROCLIM: iError = WSAEPROCLIM; break; #endif case EUSERS: iError = WSAEUSERS; break; case EDQUOT: iError = WSAEDQUOT; break; case ESTALE: iError = WSAESTALE; break; case EREMOTE: iError = WSAEREMOTE; break; /* Special cases */ #if (EAGAIN != EWOULDBLOCK) case EAGAIN: iError = WSAEWOULDBLOCK; break; #endif #if defined(EPROTO) case EPROTO: iError = WSAECONNRESET; break; #endif } /** * Windows Sockets Extended Error Codes: * * WSASYSNOTREADY * WSAVERNOTSUPPORTED * WSANOTINITIALISED * WSAEDISCON * WSAENOMORE * WSAECANCELLED * WSAEINVALIDPROCTABLE * WSAEINVALIDPROVIDER * WSAEPROVIDERFAILEDINIT * WSASYSCALLFAILURE * WSASERVICE_NOT_FOUND * WSATYPE_NOT_FOUND * WSA_E_NO_MORE * WSA_E_CANCELLED * WSAEREFUSED */ return iError; } HANDLE WSACreateEvent(void) { return CreateEvent(NULL, TRUE, FALSE, NULL); } BOOL WSASetEvent(HANDLE hEvent) { return SetEvent(hEvent); } BOOL WSAResetEvent(HANDLE hEvent) { return ResetEvent(hEvent); } BOOL WSACloseEvent(HANDLE hEvent) { BOOL status; status = CloseHandle(hEvent); if (!status) SetLastError(6); return status; } int WSAEventSelect(SOCKET s, WSAEVENT hEventObject, LONG lNetworkEvents) { u_long arg = 1; if (_ioctlsocket(s, FIONBIO, &arg) != 0) return SOCKET_ERROR; if (SetEventFileDescriptor(hEventObject, s) < 0) return SOCKET_ERROR; return 0; } DWORD WSAWaitForMultipleEvents(DWORD cEvents, const HANDLE* lphEvents, BOOL fWaitAll, DWORD dwTimeout, BOOL fAlertable) { return WaitForMultipleObjectsEx(cEvents, lphEvents, fWaitAll, dwTimeout, fAlertable); } SOCKET WSASocketA(int af, int type, int protocol, LPWSAPROTOCOL_INFOA lpProtocolInfo, GROUP g, DWORD dwFlags) { SOCKET s; s = _socket(af, type, protocol); return s; } SOCKET WSASocketW(int af, int type, int protocol, LPWSAPROTOCOL_INFOW lpProtocolInfo, GROUP g, DWORD dwFlags) { return WSASocketA(af, type, protocol, (LPWSAPROTOCOL_INFOA) lpProtocolInfo, g, dwFlags); } int WSAIoctl(SOCKET s, DWORD dwIoControlCode, LPVOID lpvInBuffer, DWORD cbInBuffer, LPVOID lpvOutBuffer, DWORD cbOutBuffer, LPDWORD lpcbBytesReturned, LPWSAOVERLAPPED lpOverlapped, LPWSAOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine) { int fd; int index; ULONG nFlags; size_t offset; size_t ifreq_len; struct ifreq* ifreq; struct ifconf ifconf; char address[128]; char broadcast[128]; char netmask[128]; char buffer[4096]; int numInterfaces; int maxNumInterfaces; INTERFACE_INFO* pInterface; INTERFACE_INFO* pInterfaces; struct sockaddr_in* pAddress; struct sockaddr_in* pBroadcast; struct sockaddr_in* pNetmask; if ((dwIoControlCode != SIO_GET_INTERFACE_LIST) || (!lpvOutBuffer || !cbOutBuffer || !lpcbBytesReturned)) { WSASetLastError(WSAEINVAL); return SOCKET_ERROR; } fd = (int) s; pInterfaces = (INTERFACE_INFO*) lpvOutBuffer; maxNumInterfaces = cbOutBuffer / sizeof(INTERFACE_INFO); ifconf.ifc_len = sizeof(buffer); ifconf.ifc_buf = buffer; if (ioctl(fd, SIOCGIFCONF, &ifconf) != 0) { WSASetLastError(WSAENETDOWN); return SOCKET_ERROR; } index = 0; offset = 0; numInterfaces = 0; ifreq = ifconf.ifc_req; while ((offset < ifconf.ifc_len) && (numInterfaces < maxNumInterfaces)) { pInterface = &pInterfaces[index]; pAddress = (struct sockaddr_in*) &pInterface->iiAddress; pBroadcast = (struct sockaddr_in*) &pInterface->iiBroadcastAddress; pNetmask = (struct sockaddr_in*) &pInterface->iiNetmask; if (ioctl(fd, SIOCGIFFLAGS, ifreq) != 0) goto next_ifreq; nFlags = 0; if (ifreq->ifr_flags & IFF_UP) nFlags |= _IFF_UP; if (ifreq->ifr_flags & IFF_BROADCAST) nFlags |= _IFF_BROADCAST; if (ifreq->ifr_flags & IFF_LOOPBACK) nFlags |= _IFF_LOOPBACK; if (ifreq->ifr_flags & IFF_POINTOPOINT) nFlags |= _IFF_POINTTOPOINT; if (ifreq->ifr_flags & IFF_MULTICAST) nFlags |= _IFF_MULTICAST; pInterface->iiFlags = nFlags; if (ioctl(fd, SIOCGIFADDR, ifreq) != 0) goto next_ifreq; if ((ifreq->ifr_addr.sa_family != AF_INET) && (ifreq->ifr_addr.sa_family != AF_INET6)) goto next_ifreq; getnameinfo(&ifreq->ifr_addr, sizeof(ifreq->ifr_addr), address, sizeof(address), 0, 0, NI_NUMERICHOST); inet_pton(ifreq->ifr_addr.sa_family, address, (void*) &pAddress->sin_addr); if (ioctl(fd, SIOCGIFBRDADDR, ifreq) != 0) goto next_ifreq; if ((ifreq->ifr_addr.sa_family != AF_INET) && (ifreq->ifr_addr.sa_family != AF_INET6)) goto next_ifreq; getnameinfo(&ifreq->ifr_addr, sizeof(ifreq->ifr_addr), broadcast, sizeof(broadcast), 0, 0, NI_NUMERICHOST); inet_pton(ifreq->ifr_addr.sa_family, broadcast, (void*) &pBroadcast->sin_addr); if (ioctl(fd, SIOCGIFNETMASK, ifreq) != 0) goto next_ifreq; if ((ifreq->ifr_addr.sa_family != AF_INET) && (ifreq->ifr_addr.sa_family != AF_INET6)) goto next_ifreq; getnameinfo(&ifreq->ifr_addr, sizeof(ifreq->ifr_addr), netmask, sizeof(netmask), 0, 0, NI_NUMERICHOST); inet_pton(ifreq->ifr_addr.sa_family, netmask, (void*) &pNetmask->sin_addr); numInterfaces++; next_ifreq: #ifndef __linux__ ifreq_len = IFNAMSIZ + ifreq->ifr_addr.sa_len; #else ifreq_len = sizeof(*ifreq); #endif ifreq = (struct ifreq*) &((BYTE*) ifreq)[ifreq_len]; offset += ifreq_len; index++; } *lpcbBytesReturned = (DWORD) (numInterfaces * sizeof(INTERFACE_INFO)); return 0; } SOCKET _accept(SOCKET s, struct sockaddr* addr, int* addrlen) { int status; int fd = (int) s; socklen_t s_addrlen = (socklen_t) *addrlen; status = accept(fd, addr, &s_addrlen); *addrlen = (socklen_t) s_addrlen; return status; } int _bind(SOCKET s, const struct sockaddr* addr, int namelen) { int status; int fd = (int) s; status = bind(fd, addr, (socklen_t) namelen); if (status < 0) return SOCKET_ERROR; return status; } int closesocket(SOCKET s) { int status; int fd = (int) s; status = close(fd); return status; } int _connect(SOCKET s, const struct sockaddr* name, int namelen) { int status; int fd = (int) s; status = connect(fd, name, (socklen_t) namelen); if (status < 0) return SOCKET_ERROR; return status; } int _ioctlsocket(SOCKET s, long cmd, u_long* argp) { int fd = (int) s; if (cmd == FIONBIO) { int flags; if (!argp) return SOCKET_ERROR; flags = fcntl(fd, F_GETFL); if (flags == -1) return SOCKET_ERROR; if (*argp) fcntl(fd, F_SETFL, flags | O_NONBLOCK); else fcntl(fd, F_SETFL, flags & ~(O_NONBLOCK)); } return 0; } int _getpeername(SOCKET s, struct sockaddr* name, int* namelen) { int status; int fd = (int) s; socklen_t s_namelen = (socklen_t) *namelen; status = getpeername(fd, name, &s_namelen); *namelen = (int) s_namelen; return status; } int _getsockname(SOCKET s, struct sockaddr* name, int* namelen) { int status; int fd = (int) s; socklen_t s_namelen = (socklen_t) *namelen; status = getsockname(fd, name, &s_namelen); *namelen = (int) s_namelen; return status; } int _getsockopt(SOCKET s, int level, int optname, char* optval, int* optlen) { int status; int fd = (int) s; socklen_t s_optlen = (socklen_t) *optlen; status = getsockopt(fd, level, optname, (void*) optval, &s_optlen); *optlen = (socklen_t) s_optlen; return status; } u_long _htonl(u_long hostlong) { return htonl(hostlong); } u_short _htons(u_short hostshort) { return htons(hostshort); } unsigned long _inet_addr(const char* cp) { return (long) inet_addr(cp); } char* _inet_ntoa(struct in_addr in) { return inet_ntoa(in); } int _listen(SOCKET s, int backlog) { int status; int fd = (int) s; status = listen(fd, backlog); return status; } u_long _ntohl(u_long netlong) { return ntohl(netlong); } u_short _ntohs(u_short netshort) { return ntohs(netshort); } int _recv(SOCKET s, char* buf, int len, int flags) { int status; int fd = (int) s; status = (int) recv(fd, (void*) buf, (size_t) len, flags); return status; } int _recvfrom(SOCKET s, char* buf, int len, int flags, struct sockaddr* from, int* fromlen) { int status; int fd = (int) s; socklen_t s_fromlen = (socklen_t) *fromlen; status = (int) recvfrom(fd, (void*) buf, (size_t) len, flags, from, &s_fromlen); *fromlen = (int) s_fromlen; return status; } int _select(int nfds, fd_set* readfds, fd_set* writefds, fd_set* exceptfds, const struct timeval* timeout) { int status; do { status = select(nfds, readfds, writefds, exceptfds, (struct timeval*) timeout); } while ((status < 0) && (errno == EINTR)); return status; } int _send(SOCKET s, const char* buf, int len, int flags) { int status; int fd = (int) s; flags |= MSG_NOSIGNAL; status = (int) send(fd, (void*) buf, (size_t) len, flags); return status; } int _sendto(SOCKET s, const char* buf, int len, int flags, const struct sockaddr* to, int tolen) { int status; int fd = (int) s; status = (int) sendto(fd, (void*) buf, (size_t) len, flags, to, (socklen_t) tolen); return status; } int _setsockopt(SOCKET s, int level, int optname, const char* optval, int optlen) { int status; int fd = (int) s; status = setsockopt(fd, level, optname, (void*) optval, (socklen_t) optlen); return status; } int _shutdown(SOCKET s, int how) { int status; int fd = (int) s; int s_how = -1; switch (how) { case SD_RECEIVE: s_how = SHUT_RD; break; case SD_SEND: s_how = SHUT_WR; break; case SD_BOTH: s_how = SHUT_RDWR; break; } if (s_how < 0) return SOCKET_ERROR; status = shutdown(fd, s_how); return status; } SOCKET _socket(int af, int type, int protocol) { int fd; SOCKET s; fd = socket(af, type, protocol); if (fd < 1) return INVALID_SOCKET; s = (SOCKET) fd; return s; } struct hostent* _gethostbyaddr(const char* addr, int len, int type) { struct hostent* host; host = gethostbyaddr((void*) addr, (socklen_t) len, type); return host; } struct hostent* _gethostbyname(const char* name) { struct hostent* host; host = gethostbyname(name); return host; } int _gethostname(char* name, int namelen) { int status; status = gethostname(name, (size_t) namelen); return status; } struct servent* _getservbyport(int port, const char* proto) { struct servent* serv; serv = getservbyport(port, proto); return serv; } struct servent* _getservbyname(const char* name, const char* proto) { struct servent* serv; serv = getservbyname(name, proto); return serv; } struct protoent* _getprotobynumber(int number) { struct protoent* proto; proto = getprotobynumber(number); return proto; } struct protoent* _getprotobyname(const char* name) { struct protoent* proto; proto = getprotobyname(name); return proto; } #endif /* _WIN32 */