Compiles and runs on linux and windows, using DLLs!

src/inet.c

@@ -19,10 +19,6 @@ static int inet_global_tohostname(lua_State *L);
 
 static void inet_pushresolved(lua_State *L, struct hostent *hp);
 
-#ifdef INET_ATON
-static int inet_aton(const char *cp, struct in_addr *inp);
-#endif
-
 static luaL_reg func[] = {
     { "toip", inet_global_toip },
     { "tohostname", inet_global_tohostname },
@@ -196,9 +192,11 @@ static void inet_pushresolved(lua_State *L, struct hostent *hp)
 * Returns
 *   NULL in case of success, error message otherwise
 \*-------------------------------------------------------------------------*/
-const char *inet_tryconnect(p_sock ps, const char *address, ushort port)
+const char *inet_tryconnect(p_sock ps, const char *address, 
+        unsigned short port)
 {
     struct sockaddr_in remote;
+    const char *err;
     memset(&remote, 0, sizeof(remote));
     remote.sin_family = AF_INET;
     remote.sin_port = htons(port);
@@ -213,7 +211,7 @@ const char *inet_tryconnect(p_sock ps, const char *address, ushort port)
         }
     } else remote.sin_family = AF_UNSPEC;
     sock_setblocking(ps);
-    const char *err = sock_connect(ps, (SA *) &remote, sizeof(remote));
+    err = sock_connect(ps, (SA *) &remote, sizeof(remote));
     if (err) {
         sock_destroy(ps);
         *ps = SOCK_INVALID;
@@ -233,10 +231,11 @@ const char *inet_tryconnect(p_sock ps, const char *address, ushort port)
 * Returns
 *   NULL in case of success, error message otherwise
 \*-------------------------------------------------------------------------*/
-const char *inet_trybind(p_sock ps, const char *address, ushort port, 
+const char *inet_trybind(p_sock ps, const char *address, unsigned short port, 
         int backlog)
 {
     struct sockaddr_in local;
+    const char *err;
     memset(&local, 0, sizeof(local));
     /* address is either wildcard or a valid ip address */
     local.sin_addr.s_addr = htonl(INADDR_ANY);
@@ -251,7 +250,7 @@ const char *inet_trybind(p_sock ps, const char *address, ushort port,
         memcpy(&local.sin_addr, *addr, sizeof(struct in_addr));
     }
     sock_setblocking(ps);
-    const char *err = sock_bind(ps, (SA *) &local, sizeof(local));
+    err = sock_bind(ps, (SA *) &local, sizeof(local));
     if (err) {
         sock_destroy(ps);
         *ps = SOCK_INVALID;
@@ -279,8 +278,8 @@ const char *inet_trycreate(p_sock ps, int type)
 * Some systems do not provide this so that we provide our own. It's not
 * marvelously fast, but it works just fine.
 \*-------------------------------------------------------------------------*/
-#ifdef COMPAT_INETATON
+#ifdef INET_ATON
-static int inet_aton(const char *cp, struct in_addr *inp)
+int inet_aton(const char *cp, struct in_addr *inp)
 {
     unsigned int a = 0, b = 0, c = 0, d = 0;
     int n = 0, r;

src/inet.h

@@ -23,4 +23,8 @@ const char *inet_trycreate(p_sock ps, int type);
 int inet_meth_getpeername(lua_State *L, p_sock ps);
 int inet_meth_getsockname(lua_State *L, p_sock ps);
 
+#ifdef INET_ATON
+int inet_aton(const char *cp, struct in_addr *inp);
+#endif
+
 #endif /* INET_H_ */

src/tcp.c

@@ -154,7 +154,7 @@ static int meth_connect(lua_State *L)
 {
     p_tcp tcp = (p_tcp) aux_checkclass(L, "tcp{master}", 1);
     const char *address =  luaL_checkstring(L, 2);
-    unsigned short port = (ushort) luaL_checknumber(L, 3);
+    unsigned short port = (unsigned short) luaL_checknumber(L, 3);
     const char *err = inet_tryconnect(&tcp->sock, address, port);
     if (err) {
         lua_pushnil(L);
@@ -174,7 +174,7 @@ static int meth_bind(lua_State *L)
 {
     p_tcp tcp = (p_tcp) aux_checkclass(L, "tcp{master}", 1);
     const char *address =  luaL_checkstring(L, 2);
-    unsigned short port = (ushort) luaL_checknumber(L, 3);
+    unsigned short port = (unsigned short) luaL_checknumber(L, 3);
     int backlog = (int) luaL_optnumber(L, 4, 1);
     const char *err = inet_trybind(&tcp->sock, address, port, backlog);
     if (err) {
@@ -227,12 +227,13 @@ static int meth_accept(lua_State *L)
 \*-------------------------------------------------------------------------*/
 int global_create(lua_State *L)
 {
+    const char *err;
     /* allocate tcp object */
     p_tcp tcp = (p_tcp) lua_newuserdata(L, sizeof(t_tcp));
     /* set its type as master object */
     aux_setclass(L, "tcp{master}", -1);
     /* try to allocate a system socket */
-    const char *err = inet_trycreate(&tcp->sock, SOCK_STREAM);
+    err = inet_trycreate(&tcp->sock, SOCK_STREAM);
     if (err) { /* get rid of object on stack and push error */
         lua_pop(L, 1);
         lua_pushnil(L);

src/udp.c

@@ -104,7 +104,7 @@ static int meth_sendto(lua_State *L)
     size_t count, sent = 0;
     const char *data = luaL_checklstring(L, 2, &count);
     const char *ip = luaL_checkstring(L, 3);
-    ushort port = (ushort) luaL_checknumber(L, 4);
+    unsigned short port = (unsigned short) luaL_checknumber(L, 4);
     p_tm tm = &udp->tm;
     struct sockaddr_in addr;
     int err;
@@ -220,7 +220,8 @@ static int meth_setpeername(lua_State *L)
     const char *address =  luaL_checkstring(L, 2);
     int connecting = strcmp(address, "*");
     unsigned short port = connecting ? 
-        (ushort) luaL_checknumber(L, 3) : (ushort) luaL_optnumber(L, 3, 0);
+        (unsigned short) luaL_checknumber(L, 3) : 
+        (unsigned short) luaL_optnumber(L, 3, 0);
     const char *err = inet_tryconnect(&udp->sock, address, port);
     if (err) {
         lua_pushnil(L);
@@ -251,7 +252,7 @@ static int meth_setsockname(lua_State *L)
 {
     p_udp udp = (p_udp) aux_checkclass(L, "udp{master}", 1);
     const char *address =  luaL_checkstring(L, 2);
-    unsigned short port = (ushort) luaL_checknumber(L, 3);
+    unsigned short port = (unsigned short) luaL_checknumber(L, 3);
     const char *err = inet_trybind(&udp->sock, address, port, -1);
     if (err) {
         lua_pushnil(L);
@@ -270,12 +271,13 @@ static int meth_setsockname(lua_State *L)
 \*-------------------------------------------------------------------------*/
 int global_create(lua_State *L)
 {
+    const char *err;
     /* allocate udp object */
     p_udp udp = (p_udp) lua_newuserdata(L, sizeof(t_udp));
     /* set its type as master object */
     aux_setclass(L, "udp{unconnected}", -1);
     /* try to allocate a system socket */
-    const char *err = inet_trycreate(&udp->sock, SOCK_DGRAM);
+    err = inet_trycreate(&udp->sock, SOCK_DGRAM);
     if (err) {
         /* get rid of object on stack and push error */
         lua_pop(L, 1);

src/usocket.h

@@ -3,8 +3,8 @@
 *
 * RCS ID: $Id$
 \*=========================================================================*/
-#ifndef UNIX_H
+#ifndef USOCKET_H
-#define UNIX_H
+#define USOCKET_H
 
 /*=========================================================================*\
 * BSD include files
@@ -41,4 +41,4 @@ typedef t_sock *p_sock;
 
 #define SOCK_INVALID (-1)
 
-#endif /* UNIX_H */
+#endif /* USOCKET_H */

src/wsocket.c

@@ -0,0 +1,261 @@
+#include <string.h>
+
+#include "socket.h"
+
+int sock_open(void)
+{
+    WORD wVersionRequested;
+    WSADATA wsaData;
+    int err; 
+    wVersionRequested = MAKEWORD(2, 0); 
+    err = WSAStartup(wVersionRequested, &wsaData );
+    if (err != 0) return 0;
+    if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 0) {
+        WSACleanup();
+        return 0; 
+    }
+    return 1;
+}
+
+void sock_destroy(p_sock ps)
+{
+    closesocket(*ps);
+}
+
+const char *sock_create(p_sock ps, int domain, int type, int protocol)
+{
+    t_sock sock = socket(domain, type, protocol);
+    if (sock == SOCK_INVALID) return sock_createstrerror(); 
+    *ps = sock;
+    sock_setnonblocking(ps);
+    sock_setreuseaddr(ps);
+    return NULL;
+}
+
+const char *sock_connect(p_sock ps, SA *addr, socklen_t addr_len)
+{
+    if (connect(*ps, addr, addr_len) < 0) return sock_connectstrerror();
+    else return NULL;
+}
+
+const char *sock_bind(p_sock ps, SA *addr, socklen_t addr_len)
+{
+    if (bind(*ps, addr, addr_len) < 0) return sock_bindstrerror();
+    else return NULL;
+}
+
+void sock_listen(p_sock ps, int backlog)
+{
+    listen(*ps, backlog);
+}
+
+int sock_accept(p_sock ps, p_sock pa, SA *addr, socklen_t *addr_len, 
+        int timeout)
+{
+    t_sock sock = *ps;
+    struct timeval tv;
+    SA dummy_addr;
+    socklen_t dummy_len;
+    fd_set fds;
+    tv.tv_sec = timeout / 1000;
+    tv.tv_usec = (timeout % 1000) * 1000;
+    FD_ZERO(&fds);
+    FD_SET(sock, &fds);
+    if (select(sock+1, &fds, NULL, NULL, timeout >= 0 ? &tv : NULL) <= 0)
+        return IO_TIMEOUT;
+    if (!addr) addr = &dummy_addr;
+    if (!addr_len) addr_len = &dummy_len;
+    *pa = accept(sock, addr, addr_len);
+    if (*pa == SOCK_INVALID) return IO_ERROR;
+    else return IO_DONE;
+}
+
+int sock_send(p_sock ps, const char *data, size_t count, size_t *sent, 
+        int timeout)
+{
+    t_sock sock = *ps;
+    struct timeval tv;
+    fd_set fds;
+    ssize_t put = 0;
+    int err;
+    int ret;
+    tv.tv_sec = timeout / 1000;
+    tv.tv_usec = (timeout % 1000) * 1000;
+    FD_ZERO(&fds);
+    FD_SET(sock, &fds);
+    ret = select(sock+1, NULL, &fds, NULL, timeout >= 0 ? &tv : NULL);
+    if (ret > 0) {
+       put = send(sock, data, count, 0);  
+       if (put <= 0) {
+           /* a bug in WinSock forces us to do a busy wait until we manage
+           ** to write, because select returns immediately even though it
+           ** should have blocked us until we could write... */
+           if (WSAGetLastError() == WSAEWOULDBLOCK) err = IO_DONE;
+           else err = IO_CLOSED;
+           *sent = 0;
+       } else {
+           *sent = put;
+           err = IO_DONE;
+       }
+       return err;
+    } else {
+        *sent = 0;
+        return IO_TIMEOUT;
+    }
+}
+
+int sock_sendto(p_sock ps, const char *data, size_t count, size_t *sent, 
+        SA *addr, socklen_t addr_len, int timeout)
+{
+    t_sock sock = *ps;
+    struct timeval tv;
+    fd_set fds;
+    ssize_t put = 0;
+    int err;
+    int ret;
+    tv.tv_sec = timeout / 1000;
+    tv.tv_usec = (timeout % 1000) * 1000;
+    FD_ZERO(&fds);
+    FD_SET(sock, &fds);
+    ret = select(sock+1, NULL, &fds, NULL, timeout >= 0 ? &tv : NULL);
+    if (ret > 0) {
+       put = sendto(sock, data, count, 0, addr, addr_len);  
+       if (put <= 0) {
+           /* a bug in WinSock forces us to do a busy wait until we manage
+           ** to write, because select returns immediately even though it
+           ** should have blocked us until we could write... */
+           if (WSAGetLastError() == WSAEWOULDBLOCK) err = IO_DONE;
+           else err = IO_CLOSED;
+           *sent = 0;
+       } else {
+           *sent = put;
+           err = IO_DONE;
+       }
+       return err;
+    } else {
+        *sent = 0;
+        return IO_TIMEOUT;
+    }
+}
+
+int sock_recv(p_sock ps, char *data, size_t count, size_t *got, int timeout)
+{
+    t_sock sock = *ps;
+    struct timeval tv;
+    fd_set fds;
+    int ret;
+    ssize_t taken = 0;
+    tv.tv_sec = timeout / 1000;
+    tv.tv_usec = (timeout % 1000) * 1000;
+    FD_ZERO(&fds);
+    FD_SET(sock, &fds);
+    ret = select(sock+1, &fds, NULL, NULL, timeout >= 0 ? &tv : NULL);
+    if (ret > 0) {
+       taken = recv(sock, data, count, 0);  
+       if (taken <= 0) {
+           *got = 0;
+           return IO_CLOSED;
+       } else {
+           *got = taken;
+           return IO_DONE;
+       }
+    } else {
+        *got = 0;
+        return IO_TIMEOUT;
+    }
+}
+
+int sock_recvfrom(p_sock ps, char *data, size_t count, size_t *got, 
+        SA *addr, socklen_t *addr_len, int timeout)
+{
+    t_sock sock = *ps;
+    struct timeval tv;
+    fd_set fds;
+    int ret;
+    ssize_t taken = 0;
+    tv.tv_sec = timeout / 1000;
+    tv.tv_usec = (timeout % 1000) * 1000;
+    FD_ZERO(&fds);
+    FD_SET(sock, &fds);
+    ret = select(sock+1, &fds, NULL, NULL, timeout >= 0 ? &tv : NULL);
+    if (ret > 0) {
+       taken = recvfrom(sock, data, count, 0, addr, addr_len);  
+       if (taken <= 0) {
+           *got = 0;
+           return IO_CLOSED;
+       } else {
+           *got = taken;
+           return IO_DONE;
+       }
+    } else {
+        *got = 0;
+        return IO_TIMEOUT;
+    }
+}
+
+const char *sock_hoststrerror(void)
+{
+    switch (WSAGetLastError()) {
+        case HOST_NOT_FOUND: return "host not found";
+        case NO_ADDRESS: return "unable to resolve host name";
+        case NO_RECOVERY: return "name server error";
+        case TRY_AGAIN: return "name server unavailable, try again later.";
+        default: return "unknown error";
+    }
+}
+
+const char *sock_createstrerror(void)
+{
+    switch (WSAGetLastError()) {
+        case WSANOTINITIALISED: return "not initialized";
+        case WSAENETDOWN: return "network is down";
+        case WSAEMFILE: return "descriptor table is full";
+        case WSAENOBUFS: return "insufficient buffer space";
+        default: return "unknown error";
+    }
+}
+
+const char *sock_bindstrerror(void)
+{
+    switch (WSAGetLastError()) {
+        case WSANOTINITIALISED: return "not initialized";
+        case WSAENETDOWN: return "network is down";
+        case WSAEADDRINUSE: return "address already in use";
+        case WSAEINVAL: return "socket already bound";
+        case WSAENOBUFS: return "too many connections";
+        case WSAEFAULT: return "invalid address";
+        case WSAENOTSOCK: return "not a socket descriptor";
+        default: return "unknown error";
+    }
+}
+
+const char *sock_connectstrerror(void)
+{
+    switch (WSAGetLastError()) {
+        case WSANOTINITIALISED: return "not initialized";
+        case WSAENETDOWN: return "network is down";
+        case WSAEADDRINUSE: return "address already in use";
+        case WSAEADDRNOTAVAIL: return "address unavailable";
+        case WSAECONNREFUSED: return "connection refused";
+        case WSAENETUNREACH: return "network is unreachable";
+        default: return "unknown error";
+    }
+}
+
+void sock_setreuseaddr(p_sock ps)
+{
+    int val = 1;
+    setsockopt(*ps, SOL_SOCKET, SO_REUSEADDR, (char *)&val, sizeof(val));
+}
+
+void sock_setblocking(p_sock ps)
+{
+    u_long argp = 0;
+    ioctlsocket(*ps, FIONBIO, &argp);
+}
+
+void sock_setnonblocking(p_sock ps)
+{
+    u_long argp = 1;
+    ioctlsocket(*ps, FIONBIO, &argp);
+}

src/wsocket.h

@@ -0,0 +1,22 @@
+/*=========================================================================*\
+* Socket compatibilization module for Win32
+*
+* RCS ID: $Id$
+\*=========================================================================*/
+#ifndef WSOCKET_H
+#define WSOCKET_H
+
+/*=========================================================================*\
+* WinSock2 include files
+\*=========================================================================*/
+#include <winsock2.h>
+#include <winbase.h>
+
+typedef int socklen_t;
+typedef int ssize_t;
+typedef SOCKET t_sock;
+typedef t_sock *p_sock;
+
+#define SOCK_INVALID (INVALID_SOCKET)
+
+#endif /* WSOCKET_H */