* Name: gsocket.c
* Author: Guillermo Rodriguez Garcia <guille@iies.es>
* Purpose: GSocket main MSW file
+ * Licence: The wxWindows licence
* CVSID: $Id$
* -------------------------------------------------------------------------
*/
* PLEASE don't put C++ comments here - this is a C source file.
*/
+#ifdef _MSC_VER
+ /* RPCNOTIFICATION_ROUTINE in rasasync.h (included from winsock.h),
+ * warning: conditional expression is constant.
+ */
+# pragma warning(disable:4115)
+ /* FD_SET,
+ * warning: named type definition in parentheses.
+ */
+# pragma warning(disable:4127)
+ /* GAddress_UNIX_GetPath,
+ * warning: unreferenced formal parameter.
+ */
+# pragma warning(disable:4100)
+#endif /* _MSC_VER */
+
+#include <winsock.h>
+
#ifndef __GSOCKET_STANDALONE__
-#include "wx/setup.h"
+# include "wx/platform.h"
+# include "wx/setup.h"
#endif
#if wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__)
#ifndef __GSOCKET_STANDALONE__
-
-#include "wx/msw/gsockmsw.h"
-#include "wx/gsocket.h"
-
+# include "wx/msw/gsockmsw.h"
+# include "wx/gsocket.h"
#else
-
-#include "gsockmsw.h"
-#include "gsocket.h"
-
+# include "gsockmsw.h"
+# include "gsocket.h"
#endif /* __GSOCKET_STANDALONE__ */
+#ifndef __WXWINCE__
#include <assert.h>
+#else
+#define assert(x)
+#ifndef isdigit
+#define isdigit(x) (x > 47 && x < 58)
+#endif
+#include "wx/msw/wince/net.h"
+#endif
+
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <ctype.h>
-#include <winsock.h>
/* if we use configure for MSW SOCKLEN_T will be already defined */
#ifndef SOCKLEN_T
-#define SOCKLEN_T int
+# define SOCKLEN_T int
#endif
-#ifdef _MSC_VER
- /* using FD_SET results in this warning */
- #pragma warning(disable:4127) /* conditional expression is constant */
-#endif /* Visual C++ */
+/* Table of GUI-related functions. We must call them indirectly because
+ * of wxBase and GUI separation: */
+
+static struct GSocketGUIFunctionsTable *gs_gui_functions;
+
+#define USE_GUI() (gs_gui_functions != NULL)
+
+/* Define macros to simplify indirection: */
+#define _GSocket_GUI_Init() \
+ if (gs_gui_functions) gs_gui_functions->GUI_Init()
+#define _GSocket_GUI_Cleanup() \
+ if (gs_gui_functions) gs_gui_functions->GUI_Cleanup()
+#define _GSocket_GUI_Init_Socket(socket) \
+ (gs_gui_functions ? gs_gui_functions->GUI_Init_Socket(socket) : 1)
+#define _GSocket_GUI_Destroy_Socket(socket) \
+ if (gs_gui_functions) gs_gui_functions->GUI_Destroy_Socket(socket)
+#define _GSocket_Enable_Events(socket) \
+ if (gs_gui_functions) gs_gui_functions->Enable_Events(socket)
+#define _GSocket_Disable_Events(socket) \
+ if (gs_gui_functions) gs_gui_functions->Disable_Events(socket)
+#define _GSocket_Install_Callback(socket, event) \
+ if (gs_gui_functions) gs_gui_functions->Install_Callback(socket, event)
+#define _GSocket_Uninstall_Callback(socket, event) \
+ if (gs_gui_functions) gs_gui_functions->Uninstall_Callback(socket, event)
+
+/* Global initialisers */
+
+void GSocket_SetGUIFunctions(struct GSocketGUIFunctionsTable *guifunc)
+{
+ gs_gui_functions = guifunc;
+}
+
+int GSocket_Init(void)
+{
+ WSADATA wsaData;
+
+ if (gs_gui_functions)
+ {
+ if ( !gs_gui_functions->GUI_Init() )
+ return 0;
+ }
+ /* Initialize WinSocket */
+ return (WSAStartup((1 << 8) | 1, &wsaData) == 0);
+}
+
+void GSocket_Cleanup(void)
+{
+ if (gs_gui_functions)
+ {
+ gs_gui_functions->GUI_Cleanup();
+ }
+
+ /* Cleanup WinSocket */
+ WSACleanup();
+}
/* Constructors / Destructors for GSocket */
-GSocket *GSocket_new()
+GSocket *GSocket_new(void)
{
- int i;
+ int i, success;
GSocket *socket;
if ((socket = (GSocket *) malloc(sizeof(GSocket))) == NULL)
{
socket->m_cbacks[i] = NULL;
}
- socket->m_local = NULL;
- socket->m_peer = NULL;
+ socket->m_detected = 0;
+ socket->m_local = NULL;
+ socket->m_peer = NULL;
socket->m_error = GSOCK_NOERROR;
- socket->m_server = FALSE;
+ socket->m_server = FALSE;
socket->m_stream = TRUE;
socket->m_non_blocking = FALSE;
socket->m_timeout.tv_sec = 10 * 60; /* 10 minutes */
socket->m_timeout.tv_usec = 0;
- socket->m_detected = 0;
+ socket->m_establishing = FALSE;
/* Per-socket GUI-specific initialization */
- if (!_GSocket_GUI_Init(socket))
+ success = _GSocket_GUI_Init_Socket(socket);
+ if (!success)
{
free(socket);
- return NULL;
+ socket = NULL;
}
return socket;
}
+void GSocket_close(GSocket *socket)
+{
+ _GSocket_Disable_Events(socket);
+ closesocket(socket->m_fd);
+ socket->m_fd = INVALID_SOCKET;
+}
+
void GSocket_destroy(GSocket *socket)
{
assert(socket != NULL);
/* Per-socket GUI-specific cleanup */
- _GSocket_GUI_Destroy(socket);
+ _GSocket_GUI_Destroy_Socket(socket);
/* Check that the socket is really shutdowned */
if (socket->m_fd != INVALID_SOCKET)
if (socket->m_fd != INVALID_SOCKET)
{
shutdown(socket->m_fd, 2);
- closesocket(socket->m_fd);
- socket->m_fd = INVALID_SOCKET;
+ GSocket_close(socket);
}
/* Disable GUI callbacks */
socket->m_cbacks[evt] = NULL;
socket->m_detected = GSOCK_LOST_FLAG;
- _GSocket_Disable_Events(socket);
}
/* Address handling */
* Sets up this socket as a server. The local address must have been
* set with GSocket_SetLocal() before GSocket_SetServer() is called.
* Returns GSOCK_NOERROR on success, one of the following otherwise:
- *
+ *
* Error codes:
* GSOCK_INVSOCK - the socket is in use.
* GSOCK_INVADDR - the local address has not been set.
- * GSOCK_IOERR - low-level error.
+ * GSOCK_IOERR - low-level error.
*/
GSocketError GSocket_SetServer(GSocket *sck)
{
ioctlsocket(sck->m_fd, FIONBIO, (u_long FAR *) &arg);
_GSocket_Enable_Events(sck);
+ /* allow a socket to re-bind if the socket is in the TIME_WAIT
+ state after being previously closed.
+ */
+ setsockopt(sck->m_fd, SOL_SOCKET, SO_REUSEADDR, (const char*)&arg, sizeof(u_long));
+
/* Bind to the local address,
* retrieve the actual address bound,
* and listen up to 5 connections.
(SOCKLEN_T *)&sck->m_local->m_len) != 0) ||
(listen(sck->m_fd, 5) != 0))
{
- closesocket(sck->m_fd);
- sck->m_fd = INVALID_SOCKET;
+ GSocket_close(sck);
sck->m_error = GSOCK_IOERR;
return GSOCK_IOERR;
}
* GSOCK_TIMEDOUT - timeout, no incoming connections.
* GSOCK_WOULDBLOCK - the call would block and the socket is nonblocking.
* GSOCK_MEMERR - couldn't allocate memory.
- * GSOCK_IOERR - low-level error.
+ * GSOCK_IOERR - low-level error.
*/
GSocket *GSocket_WaitConnection(GSocket *sck)
{
* GSOCK_TIMEDOUT - timeout, the connection failed.
* GSOCK_WOULDBLOCK - connection in progress (nonblocking sockets only)
* GSOCK_MEMERR - couldn't allocate memory.
- * GSOCK_IOERR - low-level error.
+ * GSOCK_IOERR - low-level error.
*/
GSocketError GSocket_Connect(GSocket *sck, GSocketStream stream)
{
sck->m_stream = (stream == GSOCK_STREAMED);
sck->m_oriented = TRUE;
sck->m_server = FALSE;
+ sck->m_establishing = FALSE;
/* Create the socket */
sck->m_fd = socket(sck->m_peer->m_realfamily,
if (err != GSOCK_NOERROR)
{
- closesocket(sck->m_fd);
- sck->m_fd = INVALID_SOCKET;
+ GSocket_close(sck);
/* sck->m_error is set in _GSocket_Connect_Timeout */
}
- return err;
+ return (GSocketError) err;
}
/* If connect failed with EWOULDBLOCK and the GSocket object
*/
if ((err == WSAEWOULDBLOCK) && (sck->m_non_blocking))
{
+ sck->m_establishing = TRUE;
sck->m_error = GSOCK_WOULDBLOCK;
return GSOCK_WOULDBLOCK;
}
/* If connect failed with an error other than EWOULDBLOCK,
* then the call to GSocket_Connect() has failed.
*/
- closesocket(sck->m_fd);
- sck->m_fd = INVALID_SOCKET;
+ GSocket_close(sck);
sck->m_error = GSOCK_IOERR;
return GSOCK_IOERR;
}
* Error codes:
* GSOCK_INVSOCK - the socket is in use.
* GSOCK_INVADDR - the local address has not been set.
- * GSOCK_IOERR - low-level error.
+ * GSOCK_IOERR - low-level error.
*/
GSocketError GSocket_SetNonOriented(GSocket *sck)
{
sck->m_local->m_addr,
(SOCKLEN_T *)&sck->m_local->m_len) != 0))
{
- closesocket(sck->m_fd);
- sck->m_fd = INVALID_SOCKET;
+ GSocket_close(sck);
sck->m_error = GSOCK_IOERR;
return GSOCK_IOERR;
}
*/
GSocketEventFlags GSocket_Select(GSocket *socket, GSocketEventFlags flags)
{
- assert(socket != NULL);
+ if (!USE_GUI())
+ {
+ GSocketEventFlags result = 0;
+ fd_set readfds;
+ fd_set writefds;
+ fd_set exceptfds;
+
+ assert(socket != NULL);
+
+ FD_ZERO(&readfds);
+ FD_ZERO(&writefds);
+ FD_ZERO(&exceptfds);
+ FD_SET(socket->m_fd, &readfds);
+ if (flags & GSOCK_OUTPUT_FLAG)
+ FD_SET(socket->m_fd, &writefds);
+ FD_SET(socket->m_fd, &exceptfds);
+
+ /* Check 'sticky' CONNECTION flag first */
+ result |= (GSOCK_CONNECTION_FLAG & socket->m_detected);
+
+ /* If we have already detected a LOST event, then don't try
+ * to do any further processing.
+ */
+ if ((socket->m_detected & GSOCK_LOST_FLAG) != 0)
+ {
+ socket->m_establishing = FALSE;
+
+ return (GSOCK_LOST_FLAG & flags);
+ }
- return flags & socket->m_detected;
+ /* Try select now */
+ if (select(socket->m_fd + 1, &readfds, &writefds, &exceptfds,
+ &socket->m_timeout) <= 0)
+ {
+ /* What to do here? */
+ return (result & flags);
+ }
+
+ /* Check for readability */
+ if (FD_ISSET(socket->m_fd, &readfds))
+ {
+ char c;
+
+ if (!socket->m_stream || recv(socket->m_fd, &c, 1, MSG_PEEK) > 0)
+ {
+ result |= GSOCK_INPUT_FLAG;
+ }
+ else
+ {
+ if (socket->m_server && socket->m_stream)
+ {
+ result |= GSOCK_CONNECTION_FLAG;
+ socket->m_detected |= GSOCK_CONNECTION_FLAG;
+ }
+ else
+ {
+ socket->m_detected = GSOCK_LOST_FLAG;
+ socket->m_establishing = FALSE;
+
+ /* LOST event: Abort any further processing */
+ return (GSOCK_LOST_FLAG & flags);
+ }
+ }
+ }
+
+ /* Check for writability */
+ if (FD_ISSET(socket->m_fd, &writefds))
+ {
+ if (socket->m_establishing && !socket->m_server)
+ {
+ int error;
+ SOCKLEN_T len = sizeof(error);
+
+ socket->m_establishing = FALSE;
+
+ getsockopt(socket->m_fd, SOL_SOCKET, SO_ERROR, (void*)&error, &len);
+
+ if (error)
+ {
+ socket->m_detected = GSOCK_LOST_FLAG;
+
+ /* LOST event: Abort any further processing */
+ return (GSOCK_LOST_FLAG & flags);
+ }
+ else
+ {
+ result |= GSOCK_CONNECTION_FLAG;
+ socket->m_detected |= GSOCK_CONNECTION_FLAG;
+ }
+ }
+ else
+ {
+ result |= GSOCK_OUTPUT_FLAG;
+ }
+ }
+
+ /* Check for exceptions and errors (is this useful in Unices?) */
+ if (FD_ISSET(socket->m_fd, &exceptfds))
+ {
+ socket->m_establishing = FALSE;
+ socket->m_detected = GSOCK_LOST_FLAG;
+
+ /* LOST event: Abort any further processing */
+ return (GSOCK_LOST_FLAG & flags);
+ }
+
+ return (result & flags);
+ }
+ else /* USE_GUI() */
+ {
+ assert(socket != NULL);
+ return flags & socket->m_detected;
+ }
}
/* Attributes */
* Sets the socket to non-blocking mode. All IO calls will return
* immediately.
*/
-void GSocket_SetNonBlocking(GSocket *socket, bool non_block)
+void GSocket_SetNonBlocking(GSocket *socket, int non_block)
{
assert(socket != NULL);
* operation, there is still data available, the callback function will
* be called again.
* GSOCK_OUTPUT:
- * The socket is available for writing. That is, the next write call
+ * The socket is available for writing. That is, the next write call
* won't block. This event is generated only once, when the connection is
* first established, and then only if a call failed with GSOCK_WOULDBLOCK,
* when the output buffer empties again. This means that the app should
* -------------------------------------------------------------------------
*/
-/* CHECK_ADDRESS verifies that the current family is either GSOCK_NOFAMILY
- * or GSOCK_*family*, and if it is GSOCK_NOFAMILY, it initalizes address
- * to be a GSOCK_*family*. In other cases, it returns GSOCK_INVADDR.
+/* CHECK_ADDRESS verifies that the current address family is either
+ * GSOCK_NOFAMILY or GSOCK_*family*, and if it is GSOCK_NOFAMILY, it
+ * initalizes it to be a GSOCK_*family*. In other cases, it returns
+ * an appropiate error code.
+ *
+ * CHECK_ADDRESS_RETVAL does the same but returning 'retval' on error.
*/
-#define CHECK_ADDRESS(address, family, retval) \
+#define CHECK_ADDRESS(address, family) \
{ \
if (address->m_family == GSOCK_NOFAMILY) \
if (_GAddress_Init_##family(address) != GSOCK_NOERROR) \
return address->m_error; \
if (address->m_family != GSOCK_##family) \
+ { \
+ address->m_error = GSOCK_INVADDR; \
+ return GSOCK_INVADDR; \
+ } \
+}
+
+#define CHECK_ADDRESS_RETVAL(address, family, retval) \
+{ \
+ if (address->m_family == GSOCK_NOFAMILY) \
+ if (_GAddress_Init_##family(address) != GSOCK_NOERROR) \
+ return retval; \
+ if (address->m_family != GSOCK_##family) \
{ \
address->m_error = GSOCK_INVADDR; \
return retval; \
} \
}
-GAddress *GAddress_new()
+
+GAddress *GAddress_new(void)
{
GAddress *address;
{
assert(address != NULL);
+ if (address->m_addr)
+ free(address->m_addr);
+
free(address);
}
assert(address != NULL);
- CHECK_ADDRESS(address, INET, GSOCK_INVADDR);
+ CHECK_ADDRESS(address, INET);
addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
assert(address != NULL);
- CHECK_ADDRESS(address, INET, GSOCK_INVADDR);
+ CHECK_ADDRESS(address, INET);
addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
addr->s_addr = hostaddr;
struct sockaddr_in *addr;
assert(address != NULL);
- CHECK_ADDRESS(address, INET, GSOCK_INVADDR);
+ CHECK_ADDRESS(address, INET);
if (!port)
{
struct sockaddr_in *addr;
assert(address != NULL);
- CHECK_ADDRESS(address, INET, GSOCK_INVADDR);
+ CHECK_ADDRESS(address, INET);
addr = (struct sockaddr_in *)address->m_addr;
addr->sin_port = htons(port);
struct sockaddr_in *addr;
assert(address != NULL);
- CHECK_ADDRESS(address, INET, GSOCK_INVADDR);
+ CHECK_ADDRESS(address, INET);
addr = (struct sockaddr_in *)address->m_addr;
addr_buf = (char *)&(addr->sin_addr);
struct sockaddr_in *addr;
assert(address != NULL);
- CHECK_ADDRESS(address, INET, 0);
+ CHECK_ADDRESS_RETVAL(address, INET, 0);
addr = (struct sockaddr_in *)address->m_addr;
struct sockaddr_in *addr;
assert(address != NULL);
- CHECK_ADDRESS(address, INET, 0);
+ CHECK_ADDRESS_RETVAL(address, INET, 0);
addr = (struct sockaddr_in *)address->m_addr;
return ntohs(addr->sin_port);
* -------------------------------------------------------------------------
*/
-#ifdef _MSC_VER
- #pragma warning(disable:4100) /* unreferenced formal parameter */
-#endif /* Visual C++ */
-
GSocketError _GAddress_Init_UNIX(GAddress *address)
{
assert (address != NULL);
GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path)
{
+#if defined(__BORLANDC__)
+ /* prevents unused variable message in Borland */
+ (void)path;
+#endif
assert (address != NULL);
address->m_error = GSOCK_INVADDR;
return GSOCK_INVADDR;
GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf)
{
+#if defined(__BORLANDC__)
+ /* prevents unused variable message in Borland */
+ (void)path;
+ (void)sbuf;
+#endif
assert (address != NULL);
address->m_error = GSOCK_INVADDR;
return GSOCK_INVADDR;
#else /* !wxUSE_SOCKETS */
-/*
+/*
* Translation unit shouldn't be empty, so include this typedef to make the
* compiler (VC++ 6.0, for example) happy
*/
-typedef (*wxDummy)();
+typedef void (*wxDummy)();
#endif /* wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) */
+
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