--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/wsocket.c Sat Jul 24 13:40:16 2010 +0100
@@ -0,0 +1,169 @@
+/*=========================================================================*\
+* LuaSocket 2.0.2
+* Copyright (C) 2004-2007 Diego Nehab
+*
+* Socket compatibilization module for Win32
+*
+* The penalty of calling select to avoid busy-wait is only paid when
+* the I/O call fail in the first place.
+*
+* RCS ID: $Id: wsocket.c,v 1.36 2007/06/11 23:44:54 diego Exp $
+\*=========================================================================*/
+#include <string.h>
+
+#include "socket.h"
+
+/*-------------------------------------------------------------------------*\
+* Initializes module
+\*-------------------------------------------------------------------------*/
+int socket_open(void) {
+ WSADATA wsaData;
+ WORD wVersionRequested = MAKEWORD(2, 0);
+ int err = WSAStartup(wVersionRequested, &wsaData );
+ if (err != 0) return 0;
+ if ((LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 0) &&
+ (LOBYTE(wsaData.wVersion) != 1 || HIBYTE(wsaData.wVersion) != 1)) {
+ WSACleanup();
+ return 0;
+ }
+ return 1;
+}
+
+/*-------------------------------------------------------------------------*\
+* Close module
+\*-------------------------------------------------------------------------*/
+int socket_close(void) {
+ WSACleanup();
+ return 1;
+}
+
+/*-------------------------------------------------------------------------*\
+* Wait for readable/writable/connected socket with timeout
+\*-------------------------------------------------------------------------*/
+int socket_waitfd(p_socket ps, int sw, p_timeout tm) {
+ int ret;
+ fd_set rfds, wfds, efds, *rp = NULL, *wp = NULL, *ep = NULL;
+ struct timeval tv, *tp = NULL;
+ double t;
+ if (timeout_iszero(tm)) return IO_TIMEOUT; /* optimize timeout == 0 case */
+ if (sw & WAITFD_R) {
+ FD_ZERO(&rfds);
+ FD_SET(*ps, &rfds);
+ rp = &rfds;
+ }
+ if (sw & WAITFD_W) { FD_ZERO(&wfds); FD_SET(*ps, &wfds); wp = &wfds; }
+ if (sw & WAITFD_C) { FD_ZERO(&efds); FD_SET(*ps, &efds); ep = &efds; }
+ if ((t = timeout_get(tm)) >= 0.0) {
+ tv.tv_sec = (int) t;
+ tv.tv_usec = (int) ((t-tv.tv_sec)*1.0e6);
+ tp = &tv;
+ }
+ ret = select(0, rp, wp, ep, tp);
+ if (ret == -1) return WSAGetLastError();
+ if (ret == 0) return IO_TIMEOUT;
+ if (sw == WAITFD_C && FD_ISSET(*ps, &efds)) return IO_CLOSED;
+ return IO_DONE;
+}
+
+/*-------------------------------------------------------------------------*\
+* Close and inutilize socket
+\*-------------------------------------------------------------------------*/
+void socket_destroy(p_socket ps) {
+ if (*ps != SOCKET_INVALID) {
+ socket_setblocking(ps); /* close can take a long time on WIN32 */
+ closesocket(*ps);
+ *ps = SOCKET_INVALID;
+ }
+}
+
+/*-------------------------------------------------------------------------*\
+* Put socket into blocking mode
+\*-------------------------------------------------------------------------*/
+void socket_setblocking(p_socket ps) {
+ u_long argp = 0;
+ ioctlsocket(*ps, FIONBIO, &argp);
+}
+
+/*-------------------------------------------------------------------------*\
+* Put socket into non-blocking mode
+\*-------------------------------------------------------------------------*/
+void socket_setnonblocking(p_socket ps) {
+ u_long argp = 1;
+ ioctlsocket(*ps, FIONBIO, &argp);
+}
+
+/*-------------------------------------------------------------------------*\
+* Error translation functions
+\*-------------------------------------------------------------------------*/
+
+/* WinSock doesn't have a strerror... */
+static const char *wstrerror(int err) {
+ switch (err) {
+ case WSAEINTR: return "Interrupted function call";
+ case WSAEACCES: return "Permission denied";
+ case WSAEFAULT: return "Bad address";
+ case WSAEINVAL: return "Invalid argument";
+ case WSAEMFILE: return "Too many open files";
+ case WSAEWOULDBLOCK: return "Resource temporarily unavailable";
+ case WSAEINPROGRESS: return "Operation now in progress";
+ case WSAEALREADY: return "Operation already in progress";
+ case WSAENOTSOCK: return "Socket operation on nonsocket";
+ case WSAEDESTADDRREQ: return "Destination address required";
+ case WSAEMSGSIZE: return "Message too long";
+ case WSAEPROTOTYPE: return "Protocol wrong type for socket";
+ case WSAENOPROTOOPT: return "Bad protocol option";
+ case WSAEPROTONOSUPPORT: return "Protocol not supported";
+ case WSAESOCKTNOSUPPORT: return "Socket type not supported";
+ case WSAEOPNOTSUPP: return "Operation not supported";
+ case WSAEPFNOSUPPORT: return "Protocol family not supported";
+ case WSAEAFNOSUPPORT:
+ return "Address family not supported by protocol family";
+ case WSAEADDRINUSE: return "Address already in use";
+ case WSAEADDRNOTAVAIL: return "Cannot assign requested address";
+ case WSAENETDOWN: return "Network is down";
+ case WSAENETUNREACH: return "Network is unreachable";
+ case WSAENETRESET: return "Network dropped connection on reset";
+ case WSAECONNABORTED: return "Software caused connection abort";
+ case WSAECONNRESET: return "Connection reset by peer";
+ case WSAENOBUFS: return "No buffer space available";
+ case WSAEISCONN: return "Socket is already connected";
+ case WSAENOTCONN: return "Socket is not connected";
+ case WSAESHUTDOWN: return "Cannot send after socket shutdown";
+ case WSAETIMEDOUT: return "Connection timed out";
+ case WSAECONNREFUSED: return "Connection refused";
+ case WSAEHOSTDOWN: return "Host is down";
+ case WSAEHOSTUNREACH: return "No route to host";
+ case WSAEPROCLIM: return "Too many processes";
+ case WSASYSNOTREADY: return "Network subsystem is unavailable";
+ case WSAVERNOTSUPPORTED: return "Winsock.dll version out of range";
+ case WSANOTINITIALISED:
+ return "Successful WSAStartup not yet performed";
+ case WSAEDISCON: return "Graceful shutdown in progress";
+ case WSAHOST_NOT_FOUND: return "Host not found";
+ case WSATRY_AGAIN: return "Nonauthoritative host not found";
+ case WSANO_RECOVERY: return "Nonrecoverable name lookup error";
+ case WSANO_DATA: return "Valid name, no data record of requested type";
+ default: return "Unknown error";
+ }
+}
+
+const char *socket_strerror(int err) {
+ if (err <= 0) return io_strerror(err);
+ switch (err) {
+ case WSAEADDRINUSE: return "address already in use";
+ case WSAECONNREFUSED: return "connection refused";
+ case WSAEISCONN: return "already connected";
+ case WSAEACCES: return "permission denied";
+ case WSAECONNABORTED: return "closed";
+ case WSAECONNRESET: return "closed";
+ case WSAETIMEDOUT: return "timeout";
+ default: return wstrerror(err);
+ }
+}
+
+/* Socket error code */
+int socket_error()
+{
+ return WSAGetLastError();
+}
+