--- /dev/null
+/* -------------------------------------------------------------------------
+ * Project: GSocket (Generic Socket)
+ * Name: gsocket.c
+ * Author: Guillermo Rodriguez Garcia <guille@iies.es>
+ * Purpose: GSocket main MSW file
+ * Licence: The wxWidgets 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)
+
+#ifdef __WXWINCE__
+ /* windows.h results in tons of warnings at max warning level */
+# ifdef _MSC_VER
+# pragma warning(push, 1)
+# endif
+# include <windows.h>
+# ifdef _MSC_VER
+# pragma warning(pop)
+# pragma warning(disable:4514)
+# endif
+#endif
+
+#endif /* _MSC_VER */
+
+#include <winsock.h>
+
+#ifndef __GSOCKET_STANDALONE__
+# 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"
+#else
+# 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>
+
+/* if we use configure for MSW SOCKLEN_T will be already defined */
+#ifndef SOCKLEN_T
+# define SOCKLEN_T int
+#endif
+
+/* 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(void)
+{
+ int i, success;
+ GSocket *socket;
+
+ if ((socket = (GSocket *) malloc(sizeof(GSocket))) == NULL)
+ return NULL;
+
+ socket->m_fd = INVALID_SOCKET;
+ for (i = 0; i < GSOCK_MAX_EVENT; i++)
+ {
+ socket->m_cbacks[i] = NULL;
+ }
+ socket->m_detected = 0;
+ socket->m_local = NULL;
+ socket->m_peer = NULL;
+ socket->m_error = GSOCK_NOERROR;
+ 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_establishing = FALSE;
+ socket->m_reusable = FALSE;
+
+ /* Per-socket GUI-specific initialization */
+ success = _GSocket_GUI_Init_Socket(socket);
+ if (!success)
+ {
+ free(socket);
+ 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(socket);
+
+ /* Check that the socket is really shutdowned */
+ if (socket->m_fd != INVALID_SOCKET)
+ GSocket_Shutdown(socket);
+
+ /* Destroy private addresses */
+ if (socket->m_local)
+ GAddress_destroy(socket->m_local);
+
+ if (socket->m_peer)
+ GAddress_destroy(socket->m_peer);
+
+ /* Destroy the socket itself */
+ free(socket);
+}
+
+/* GSocket_Shutdown:
+ * Disallow further read/write operations on this socket, close
+ * the fd and disable all callbacks.
+ */
+void GSocket_Shutdown(GSocket *socket)
+{
+ int evt;
+
+ assert(socket != NULL);
+
+ /* If socket has been created, shutdown it */
+ if (socket->m_fd != INVALID_SOCKET)
+ {
+ shutdown(socket->m_fd, 2);
+ GSocket_close(socket);
+ }
+
+ /* Disable GUI callbacks */
+ for (evt = 0; evt < GSOCK_MAX_EVENT; evt++)
+ socket->m_cbacks[evt] = NULL;
+
+ socket->m_detected = GSOCK_LOST_FLAG;
+}
+
+/* Address handling */
+
+/* GSocket_SetLocal:
+ * GSocket_GetLocal:
+ * GSocket_SetPeer:
+ * GSocket_GetPeer:
+ * Set or get the local or peer address for this socket. The 'set'
+ * functions return GSOCK_NOERROR on success, an error code otherwise.
+ * The 'get' functions return a pointer to a GAddress object on success,
+ * or NULL otherwise, in which case they set the error code of the
+ * corresponding GSocket.
+ *
+ * Error codes:
+ * GSOCK_INVSOCK - the socket is not valid.
+ * GSOCK_INVADDR - the address is not valid.
+ */
+GSocketError GSocket_SetLocal(GSocket *socket, GAddress *address)
+{
+ assert(socket != NULL);
+
+ /* the socket must be initialized, or it must be a server */
+ if (socket->m_fd != INVALID_SOCKET && !socket->m_server)
+ {
+ socket->m_error = GSOCK_INVSOCK;
+ return GSOCK_INVSOCK;
+ }
+
+ /* check address */
+ if (address == NULL || address->m_family == GSOCK_NOFAMILY)
+ {
+ socket->m_error = GSOCK_INVADDR;
+ return GSOCK_INVADDR;
+ }
+
+ if (socket->m_local)
+ GAddress_destroy(socket->m_local);
+
+ socket->m_local = GAddress_copy(address);
+
+ return GSOCK_NOERROR;
+}
+
+GSocketError GSocket_SetPeer(GSocket *socket, GAddress *address)
+{
+ assert(socket != NULL);
+
+ /* check address */
+ if (address == NULL || address->m_family == GSOCK_NOFAMILY)
+ {
+ socket->m_error = GSOCK_INVADDR;
+ return GSOCK_INVADDR;
+ }
+
+ if (socket->m_peer)
+ GAddress_destroy(socket->m_peer);
+
+ socket->m_peer = GAddress_copy(address);
+
+ return GSOCK_NOERROR;
+}
+
+GAddress *GSocket_GetLocal(GSocket *socket)
+{
+ GAddress *address;
+ struct sockaddr addr;
+ SOCKLEN_T size = sizeof(addr);
+ GSocketError err;
+
+ assert(socket != NULL);
+
+ /* try to get it from the m_local var first */
+ if (socket->m_local)
+ return GAddress_copy(socket->m_local);
+
+ /* else, if the socket is initialized, try getsockname */
+ if (socket->m_fd == INVALID_SOCKET)
+ {
+ socket->m_error = GSOCK_INVSOCK;
+ return NULL;
+ }
+
+ if (getsockname(socket->m_fd, &addr, &size) == SOCKET_ERROR)
+ {
+ socket->m_error = GSOCK_IOERR;
+ return NULL;
+ }
+
+ /* got a valid address from getsockname, create a GAddress object */
+ if ((address = GAddress_new()) == NULL)
+ {
+ socket->m_error = GSOCK_MEMERR;
+ return NULL;
+ }
+
+ if ((err = _GAddress_translate_from(address, &addr, size)) != GSOCK_NOERROR)
+ {
+ GAddress_destroy(address);
+ socket->m_error = err;
+ return NULL;
+ }
+
+ return address;
+}
+
+GAddress *GSocket_GetPeer(GSocket *socket)
+{
+ assert(socket != NULL);
+
+ /* try to get it from the m_peer var */
+ if (socket->m_peer)
+ return GAddress_copy(socket->m_peer);
+
+ return NULL;
+}
+
+/* Server specific parts */
+
+/* GSocket_SetServer:
+ * 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.
+ */
+GSocketError GSocket_SetServer(GSocket *sck)
+{
+ u_long arg = 1;
+
+ assert(sck != NULL);
+
+ /* must not be in use */
+ if (sck->m_fd != INVALID_SOCKET)
+ {
+ sck->m_error = GSOCK_INVSOCK;
+ return GSOCK_INVSOCK;
+ }
+
+ /* the local addr must have been set */
+ if (!sck->m_local)
+ {
+ sck->m_error = GSOCK_INVADDR;
+ return GSOCK_INVADDR;
+ }
+
+ /* Initialize all fields */
+ sck->m_server = TRUE;
+ sck->m_stream = TRUE;
+
+ /* Create the socket */
+ sck->m_fd = socket(sck->m_local->m_realfamily, SOCK_STREAM, 0);
+
+ if (sck->m_fd == INVALID_SOCKET)
+ {
+ sck->m_error = GSOCK_IOERR;
+ return GSOCK_IOERR;
+ }
+
+ 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.
+ */
+ if (sck->m_reusable) {
+ 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.
+ */
+ if ((bind(sck->m_fd, sck->m_local->m_addr, sck->m_local->m_len) != 0) ||
+ (getsockname(sck->m_fd,
+ sck->m_local->m_addr,
+ (SOCKLEN_T *)&sck->m_local->m_len) != 0) ||
+ (listen(sck->m_fd, 5) != 0))
+ {
+ GSocket_close(sck);
+ sck->m_error = GSOCK_IOERR;
+ return GSOCK_IOERR;
+ }
+
+ return GSOCK_NOERROR;
+}
+
+/* GSocket_WaitConnection:
+ * Waits for an incoming client connection. Returns a pointer to
+ * a GSocket object, or NULL if there was an error, in which case
+ * the last error field will be updated for the calling GSocket.
+ *
+ * Error codes (set in the calling GSocket)
+ * GSOCK_INVSOCK - the socket is not valid or not a server.
+ * 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.
+ */
+GSocket *GSocket_WaitConnection(GSocket *sck)
+{
+ GSocket *connection;
+ struct sockaddr from;
+ SOCKLEN_T fromlen = sizeof(from);
+ GSocketError err;
+ u_long arg = 1;
+
+ assert(sck != NULL);
+
+ /* Reenable CONNECTION events */
+ sck->m_detected &= ~GSOCK_CONNECTION_FLAG;
+
+ /* If the socket has already been created, we exit immediately */
+ if (sck->m_fd == INVALID_SOCKET || !sck->m_server)
+ {
+ sck->m_error = GSOCK_INVSOCK;
+ return NULL;
+ }
+
+ /* Create a GSocket object for the new connection */
+ connection = GSocket_new();
+
+ if (!connection)
+ {
+ sck->m_error = GSOCK_MEMERR;
+ return NULL;
+ }
+
+ /* Wait for a connection (with timeout) */
+ if (_GSocket_Input_Timeout(sck) == GSOCK_TIMEDOUT)
+ {
+ GSocket_destroy(connection);
+ /* sck->m_error set by _GSocket_Input_Timeout */
+ return NULL;
+ }
+
+ connection->m_fd = accept(sck->m_fd, &from, &fromlen);
+
+ if (connection->m_fd == INVALID_SOCKET)
+ {
+ if (WSAGetLastError() == WSAEWOULDBLOCK)
+ sck->m_error = GSOCK_WOULDBLOCK;
+ else
+ sck->m_error = GSOCK_IOERR;
+
+ GSocket_destroy(connection);
+ return NULL;
+ }
+
+ /* Initialize all fields */
+ connection->m_server = FALSE;
+ connection->m_stream = TRUE;
+
+ /* Setup the peer address field */
+ connection->m_peer = GAddress_new();
+ if (!connection->m_peer)
+ {
+ GSocket_destroy(connection);
+ sck->m_error = GSOCK_MEMERR;
+ return NULL;
+ }
+ err = _GAddress_translate_from(connection->m_peer, &from, fromlen);
+ if (err != GSOCK_NOERROR)
+ {
+ GAddress_destroy(connection->m_peer);
+ GSocket_destroy(connection);
+ sck->m_error = err;
+ return NULL;
+ }
+
+ ioctlsocket(connection->m_fd, FIONBIO, (u_long FAR *) &arg);
+ _GSocket_Enable_Events(connection);
+
+ return connection;
+}
+
+/* GSocket_SetReusable:
+* Simply sets the m_resuable flag on the socket. GSocket_SetServer will
+* make the appropriate setsockopt() call.
+* Implemented as a GSocket function because clients (ie, wxSocketServer)
+* don't have access to the GSocket struct information.
+* Returns TRUE if the flag was set correctly, FALSE if an error occured
+* (ie, if the parameter was NULL)
+*/
+int GSocket_SetReusable(GSocket *socket)
+{
+ /* socket must not be null, and must not be in use/already bound */
+ if (NULL != socket && socket->m_fd == INVALID_SOCKET) {
+ socket->m_reusable = TRUE;
+ return TRUE;
+ }
+ return FALSE;
+}
+
+/* Client specific parts */
+
+/* GSocket_Connect:
+ * For stream (connection oriented) sockets, GSocket_Connect() tries
+ * to establish a client connection to a server using the peer address
+ * as established with GSocket_SetPeer(). Returns GSOCK_NOERROR if the
+ * connection has been succesfully established, or one of the error
+ * codes listed below. Note that for nonblocking sockets, a return
+ * value of GSOCK_WOULDBLOCK doesn't mean a failure. The connection
+ * request can be completed later; you should use GSocket_Select()
+ * to poll for GSOCK_CONNECTION | GSOCK_LOST, or wait for the
+ * corresponding asynchronous events.
+ *
+ * For datagram (non connection oriented) sockets, GSocket_Connect()
+ * just sets the peer address established with GSocket_SetPeer() as
+ * default destination.
+ *
+ * Error codes:
+ * GSOCK_INVSOCK - the socket is in use or not valid.
+ * GSOCK_INVADDR - the peer address has not been established.
+ * 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.
+ */
+GSocketError GSocket_Connect(GSocket *sck, GSocketStream stream)
+{
+ int ret, err;
+ u_long arg = 1;
+
+ assert(sck != NULL);
+
+ /* Enable CONNECTION events (needed for nonblocking connections) */
+ sck->m_detected &= ~GSOCK_CONNECTION_FLAG;
+
+ if (sck->m_fd != INVALID_SOCKET)
+ {
+ sck->m_error = GSOCK_INVSOCK;
+ return GSOCK_INVSOCK;
+ }
+
+ if (!sck->m_peer)
+ {
+ sck->m_error = GSOCK_INVADDR;
+ return GSOCK_INVADDR;
+ }
+
+ /* Streamed or dgram socket? */
+ sck->m_stream = (stream == GSOCK_STREAMED);
+ sck->m_server = FALSE;
+ sck->m_establishing = FALSE;
+
+ /* Create the socket */
+ sck->m_fd = socket(sck->m_peer->m_realfamily,
+ sck->m_stream? SOCK_STREAM : SOCK_DGRAM, 0);
+
+ if (sck->m_fd == INVALID_SOCKET)
+ {
+ sck->m_error = GSOCK_IOERR;
+ return GSOCK_IOERR;
+ }
+
+ ioctlsocket(sck->m_fd, FIONBIO, (u_long FAR *) &arg);
+ _GSocket_Enable_Events(sck);
+
+ /* Connect it to the peer address, with a timeout (see below) */
+ ret = connect(sck->m_fd, sck->m_peer->m_addr, sck->m_peer->m_len);
+
+ if (ret == SOCKET_ERROR)
+ {
+ err = WSAGetLastError();
+
+ /* If connect failed with EWOULDBLOCK and the GSocket object
+ * is in blocking mode, we select() for the specified timeout
+ * checking for writability to see if the connection request
+ * completes.
+ */
+ if ((err == WSAEWOULDBLOCK) && (!sck->m_non_blocking))
+ {
+ err = _GSocket_Connect_Timeout(sck);
+
+ if (err != GSOCK_NOERROR)
+ {
+ GSocket_close(sck);
+ /* sck->m_error is set in _GSocket_Connect_Timeout */
+ }
+
+ return (GSocketError) err;
+ }
+
+ /* If connect failed with EWOULDBLOCK and the GSocket object
+ * is set to nonblocking, we set m_error to GSOCK_WOULDBLOCK
+ * (and return GSOCK_WOULDBLOCK) but we don't close the socket;
+ * this way if the connection completes, a GSOCK_CONNECTION
+ * event will be generated, if enabled.
+ */
+ 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.
+ */
+ GSocket_close(sck);
+ sck->m_error = GSOCK_IOERR;
+ return GSOCK_IOERR;
+ }
+
+ return GSOCK_NOERROR;
+}
+
+/* Datagram sockets */
+
+/* GSocket_SetNonOriented:
+ * Sets up this socket as a non-connection oriented (datagram) socket.
+ * Before using this function, the local address must have been set
+ * with GSocket_SetLocal(), or the call will fail. Returns GSOCK_NOERROR
+ * on success, or 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.
+ */
+GSocketError GSocket_SetNonOriented(GSocket *sck)
+{
+ u_long arg = 1;
+
+ assert(sck != NULL);
+
+ if (sck->m_fd != INVALID_SOCKET)
+ {
+ sck->m_error = GSOCK_INVSOCK;
+ return GSOCK_INVSOCK;
+ }
+
+ if (!sck->m_local)
+ {
+ sck->m_error = GSOCK_INVADDR;
+ return GSOCK_INVADDR;
+ }
+
+ /* Initialize all fields */
+ sck->m_stream = FALSE;
+ sck->m_server = FALSE;
+
+ /* Create the socket */
+ sck->m_fd = socket(sck->m_local->m_realfamily, SOCK_DGRAM, 0);
+
+ if (sck->m_fd == INVALID_SOCKET)
+ {
+ sck->m_error = GSOCK_IOERR;
+ return GSOCK_IOERR;
+ }
+
+ ioctlsocket(sck->m_fd, FIONBIO, (u_long FAR *) &arg);
+ _GSocket_Enable_Events(sck);
+
+ /* Bind to the local address,
+ * and retrieve the actual address bound.
+ */
+ if ((bind(sck->m_fd, sck->m_local->m_addr, sck->m_local->m_len) != 0) ||
+ (getsockname(sck->m_fd,
+ sck->m_local->m_addr,
+ (SOCKLEN_T *)&sck->m_local->m_len) != 0))
+ {
+ GSocket_close(sck);
+ sck->m_error = GSOCK_IOERR;
+ return GSOCK_IOERR;
+ }
+
+ return GSOCK_NOERROR;
+}
+
+/* Generic IO */
+
+/* Like recv(), send(), ... */
+int GSocket_Read(GSocket *socket, char *buffer, int size)
+{
+ int ret;
+
+ assert(socket != NULL);
+
+ /* Reenable INPUT events */
+ socket->m_detected &= ~GSOCK_INPUT_FLAG;
+
+ if (socket->m_fd == INVALID_SOCKET || socket->m_server)
+ {
+ socket->m_error = GSOCK_INVSOCK;
+ return -1;
+ }
+
+ /* If the socket is blocking, wait for data (with a timeout) */
+ if (_GSocket_Input_Timeout(socket) == GSOCK_TIMEDOUT)
+ return -1;
+
+ /* Read the data */
+ if (socket->m_stream)
+ ret = _GSocket_Recv_Stream(socket, buffer, size);
+ else
+ ret = _GSocket_Recv_Dgram(socket, buffer, size);
+
+ if (ret == SOCKET_ERROR)
+ {
+ if (WSAGetLastError() != WSAEWOULDBLOCK)
+ socket->m_error = GSOCK_IOERR;
+ else
+ socket->m_error = GSOCK_WOULDBLOCK;
+ return -1;
+ }
+
+ return ret;
+}
+
+int GSocket_Write(GSocket *socket, const char *buffer, int size)
+{
+ int ret;
+
+ assert(socket != NULL);
+
+ if (socket->m_fd == INVALID_SOCKET || socket->m_server)
+ {
+ socket->m_error = GSOCK_INVSOCK;
+ return -1;
+ }
+
+ /* If the socket is blocking, wait for writability (with a timeout) */
+ if (_GSocket_Output_Timeout(socket) == GSOCK_TIMEDOUT)
+ return -1;
+
+ /* Write the data */
+ if (socket->m_stream)
+ ret = _GSocket_Send_Stream(socket, buffer, size);
+ else
+ ret = _GSocket_Send_Dgram(socket, buffer, size);
+
+ if (ret == SOCKET_ERROR)
+ {
+ if (WSAGetLastError() != WSAEWOULDBLOCK)
+ socket->m_error = GSOCK_IOERR;
+ else
+ socket->m_error = GSOCK_WOULDBLOCK;
+
+ /* Only reenable OUTPUT events after an error (just like WSAAsyncSelect
+ * does). Once the first OUTPUT event is received, users can assume
+ * that the socket is writable until a read operation fails. Only then
+ * will further OUTPUT events be posted.
+ */
+ socket->m_detected &= ~GSOCK_OUTPUT_FLAG;
+ return -1;
+ }
+
+ return ret;
+}
+
+/* GSocket_Select:
+ * Polls the socket to determine its status. This function will
+ * check for the events specified in the 'flags' parameter, and
+ * it will return a mask indicating which operations can be
+ * performed. This function won't block, regardless of the
+ * mode (blocking | nonblocking) of the socket.
+ */
+GSocketEventFlags GSocket_Select(GSocket *socket, GSocketEventFlags flags)
+{
+ 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 || flags & GSOCK_CONNECTION_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);
+ }
+
+ /* 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 */
+
+/* GSocket_SetNonBlocking:
+ * Sets the socket to non-blocking mode. All IO calls will return
+ * immediately.
+ */
+void GSocket_SetNonBlocking(GSocket *socket, int non_block)
+{
+ assert(socket != NULL);
+
+ socket->m_non_blocking = non_block;
+}
+
+/* GSocket_SetTimeout:
+ * Sets the timeout for blocking calls. Time is expressed in
+ * milliseconds.
+ */
+void GSocket_SetTimeout(GSocket *socket, unsigned long millis)
+{
+ assert(socket != NULL);
+
+ socket->m_timeout.tv_sec = (millis / 1000);
+ socket->m_timeout.tv_usec = (millis % 1000) * 1000;
+}
+
+/* GSocket_GetError:
+ * Returns the last error occured for this socket. Note that successful
+ * operations do not clear this back to GSOCK_NOERROR, so use it only
+ * after an error.
+ */
+GSocketError GSocket_GetError(GSocket *socket)
+{
+ assert(socket != NULL);
+
+ return socket->m_error;
+}
+
+/* Callbacks */
+
+/* GSOCK_INPUT:
+ * There is data to be read in the input buffer. If, after a read
+ * 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
+ * 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
+ * assume that it can write since the first OUTPUT event, and no more
+ * OUTPUT events will be generated unless an error occurs.
+ * GSOCK_CONNECTION:
+ * Connection succesfully established, for client sockets, or incoming
+ * client connection, for server sockets. Wait for this event (also watch
+ * out for GSOCK_LOST) after you issue a nonblocking GSocket_Connect() call.
+ * GSOCK_LOST:
+ * The connection is lost (or a connection request failed); this could
+ * be due to a failure, or due to the peer closing it gracefully.
+ */
+
+/* GSocket_SetCallback:
+ * Enables the callbacks specified by 'flags'. Note that 'flags'
+ * may be a combination of flags OR'ed toghether, so the same
+ * callback function can be made to accept different events.
+ * The callback function must have the following prototype:
+ *
+ * void function(GSocket *socket, GSocketEvent event, char *cdata)
+ */
+void GSocket_SetCallback(GSocket *socket, GSocketEventFlags flags,
+ GSocketCallback callback, char *cdata)
+{
+ int count;
+
+ assert(socket != NULL);
+
+ for (count = 0; count < GSOCK_MAX_EVENT; count++)
+ {
+ if ((flags & (1 << count)) != 0)
+ {
+ socket->m_cbacks[count] = callback;
+ socket->m_data[count] = cdata;
+ }
+ }
+}
+
+/* GSocket_UnsetCallback:
+ * Disables all callbacks specified by 'flags', which may be a
+ * combination of flags OR'ed toghether.
+ */
+void GSocket_UnsetCallback(GSocket *socket, GSocketEventFlags flags)
+{
+ int count;
+
+ assert(socket != NULL);
+
+ for (count = 0; count < GSOCK_MAX_EVENT; count++)
+ {
+ if ((flags & (1 << count)) != 0)
+ {
+ socket->m_cbacks[count] = NULL;
+ socket->m_data[count] = NULL;
+ }
+ }
+}
+
+GSocketError GSocket_GetSockOpt(GSocket *socket, int level, int optname,
+ void *optval, int *optlen)
+{
+ if (getsockopt(socket->m_fd, level, optname, optval, optlen) == 0)
+ {
+ return GSOCK_NOERROR;
+ }
+ return GSOCK_OPTERR;
+}
+
+GSocketError GSocket_SetSockOpt(GSocket *socket, int level, int optname,
+ const void *optval, int optlen)
+{
+ if (setsockopt(socket->m_fd, level, optname, optval, optlen) == 0)
+ {
+ return GSOCK_NOERROR;
+ }
+ return GSOCK_OPTERR;
+}
+
+/* Internals (IO) */
+
+/* _GSocket_Input_Timeout:
+ * For blocking sockets, wait until data is available or
+ * until timeout ellapses.
+ */
+GSocketError _GSocket_Input_Timeout(GSocket *socket)
+{
+ fd_set readfds;
+
+ if (!socket->m_non_blocking)
+ {
+ FD_ZERO(&readfds);
+ FD_SET(socket->m_fd, &readfds);
+ if (select(0, &readfds, NULL, NULL, &socket->m_timeout) == 0)
+ {
+ socket->m_error = GSOCK_TIMEDOUT;
+ return GSOCK_TIMEDOUT;
+ }
+ }
+ return GSOCK_NOERROR;
+}
+
+/* _GSocket_Output_Timeout:
+ * For blocking sockets, wait until data can be sent without
+ * blocking or until timeout ellapses.
+ */
+GSocketError _GSocket_Output_Timeout(GSocket *socket)
+{
+ fd_set writefds;
+
+ if (!socket->m_non_blocking)
+ {
+ FD_ZERO(&writefds);
+ FD_SET(socket->m_fd, &writefds);
+ if (select(0, NULL, &writefds, NULL, &socket->m_timeout) == 0)
+ {
+ socket->m_error = GSOCK_TIMEDOUT;
+ return GSOCK_TIMEDOUT;
+ }
+ }
+ return GSOCK_NOERROR;
+}
+
+/* _GSocket_Connect_Timeout:
+ * For blocking sockets, wait until the connection is
+ * established or fails, or until timeout ellapses.
+ */
+GSocketError _GSocket_Connect_Timeout(GSocket *socket)
+{
+ fd_set writefds;
+ fd_set exceptfds;
+
+ FD_ZERO(&writefds);
+ FD_ZERO(&exceptfds);
+ FD_SET(socket->m_fd, &writefds);
+ FD_SET(socket->m_fd, &exceptfds);
+ if (select(0, NULL, &writefds, &exceptfds, &socket->m_timeout) == 0)
+ {
+ socket->m_error = GSOCK_TIMEDOUT;
+ return GSOCK_TIMEDOUT;
+ }
+ if (!FD_ISSET(socket->m_fd, &writefds))
+ {
+ socket->m_error = GSOCK_IOERR;
+ return GSOCK_IOERR;
+ }
+
+ return GSOCK_NOERROR;
+}
+
+int _GSocket_Recv_Stream(GSocket *socket, char *buffer, int size)
+{
+ return recv(socket->m_fd, buffer, size, 0);
+}
+
+int _GSocket_Recv_Dgram(GSocket *socket, char *buffer, int size)
+{
+ struct sockaddr from;
+ SOCKLEN_T fromlen = sizeof(from);
+ int ret;
+ GSocketError err;
+
+ ret = recvfrom(socket->m_fd, buffer, size, 0, &from, &fromlen);
+
+ if (ret == SOCKET_ERROR)
+ return SOCKET_ERROR;
+
+ /* Translate a system address into a GSocket address */
+ if (!socket->m_peer)
+ {
+ socket->m_peer = GAddress_new();
+ if (!socket->m_peer)
+ {
+ socket->m_error = GSOCK_MEMERR;
+ return -1;
+ }
+ }
+ err = _GAddress_translate_from(socket->m_peer, &from, fromlen);
+ if (err != GSOCK_NOERROR)
+ {
+ GAddress_destroy(socket->m_peer);
+ socket->m_peer = NULL;
+ socket->m_error = err;
+ return -1;
+ }
+
+ return ret;
+}
+
+int _GSocket_Send_Stream(GSocket *socket, const char *buffer, int size)
+{
+ return send(socket->m_fd, buffer, size, 0);
+}
+
+int _GSocket_Send_Dgram(GSocket *socket, const char *buffer, int size)
+{
+ struct sockaddr *addr;
+ int len, ret;
+ GSocketError err;
+
+ if (!socket->m_peer)
+ {
+ socket->m_error = GSOCK_INVADDR;
+ return -1;
+ }
+
+ err = _GAddress_translate_to(socket->m_peer, &addr, &len);
+ if (err != GSOCK_NOERROR)
+ {
+ socket->m_error = err;
+ return -1;
+ }
+
+ ret = sendto(socket->m_fd, buffer, size, 0, addr, len);
+
+ /* Frees memory allocated by _GAddress_translate_to */
+ free(addr);
+
+ return ret;
+}
+
+
+/*
+ * -------------------------------------------------------------------------
+ * GAddress
+ * -------------------------------------------------------------------------
+ */
+
+/* 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) \
+{ \
+ 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(void)
+{
+ GAddress *address;
+
+ if ((address = (GAddress *) malloc(sizeof(GAddress))) == NULL)
+ return NULL;
+
+ address->m_family = GSOCK_NOFAMILY;
+ address->m_addr = NULL;
+ address->m_len = 0;
+
+ return address;
+}
+
+GAddress *GAddress_copy(GAddress *address)
+{
+ GAddress *addr2;
+
+ assert(address != NULL);
+
+ if ((addr2 = (GAddress *) malloc(sizeof(GAddress))) == NULL)
+ return NULL;
+
+ memcpy(addr2, address, sizeof(GAddress));
+
+ if (address->m_addr)
+ {
+ addr2->m_addr = (struct sockaddr *) malloc(addr2->m_len);
+ if (addr2->m_addr == NULL)
+ {
+ free(addr2);
+ return NULL;
+ }
+ memcpy(addr2->m_addr, address->m_addr, addr2->m_len);
+ }
+
+ return addr2;
+}
+
+void GAddress_destroy(GAddress *address)
+{
+ assert(address != NULL);
+
+ if (address->m_addr)
+ free(address->m_addr);
+
+ free(address);
+}
+
+void GAddress_SetFamily(GAddress *address, GAddressType type)
+{
+ assert(address != NULL);
+
+ address->m_family = type;
+}
+
+GAddressType GAddress_GetFamily(GAddress *address)
+{
+ assert(address != NULL);
+
+ return address->m_family;
+}
+
+GSocketError _GAddress_translate_from(GAddress *address,
+ struct sockaddr *addr, int len)
+{
+ address->m_realfamily = addr->sa_family;
+ switch (addr->sa_family)
+ {
+ case AF_INET:
+ address->m_family = GSOCK_INET;
+ break;
+ case AF_UNIX:
+ address->m_family = GSOCK_UNIX;
+ break;
+#ifdef AF_INET6
+ case AF_INET6:
+ address->m_family = GSOCK_INET6;
+ break;
+#endif
+ default:
+ {
+ address->m_error = GSOCK_INVOP;
+ return GSOCK_INVOP;
+ }
+ }
+
+ if (address->m_addr)
+ free(address->m_addr);
+
+ address->m_len = len;
+ address->m_addr = (struct sockaddr *) malloc(len);
+
+ if (address->m_addr == NULL)
+ {
+ address->m_error = GSOCK_MEMERR;
+ return GSOCK_MEMERR;
+ }
+ memcpy(address->m_addr, addr, len);
+
+ return GSOCK_NOERROR;
+}
+
+GSocketError _GAddress_translate_to(GAddress *address,
+ struct sockaddr **addr, int *len)
+{
+ if (!address->m_addr)
+ {
+ address->m_error = GSOCK_INVADDR;
+ return GSOCK_INVADDR;
+ }
+
+ *len = address->m_len;
+ *addr = (struct sockaddr *) malloc(address->m_len);
+ if (*addr == NULL)
+ {
+ address->m_error = GSOCK_MEMERR;
+ return GSOCK_MEMERR;
+ }
+
+ memcpy(*addr, address->m_addr, address->m_len);
+ return GSOCK_NOERROR;
+}
+
+/*
+ * -------------------------------------------------------------------------
+ * Internet address family
+ * -------------------------------------------------------------------------
+ */
+
+GSocketError _GAddress_Init_INET(GAddress *address)
+{
+ address->m_len = sizeof(struct sockaddr_in);
+ address->m_addr = (struct sockaddr *) malloc(address->m_len);
+ if (address->m_addr == NULL)
+ {
+ address->m_error = GSOCK_MEMERR;
+ return GSOCK_MEMERR;
+ }
+
+ address->m_family = GSOCK_INET;
+ address->m_realfamily = AF_INET;
+ ((struct sockaddr_in *)address->m_addr)->sin_family = AF_INET;
+ ((struct sockaddr_in *)address->m_addr)->sin_addr.s_addr = INADDR_ANY;
+
+ return GSOCK_NOERROR;
+}
+
+GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname)
+{
+ struct hostent *he;
+ struct in_addr *addr;
+
+ assert(address != NULL);
+
+ CHECK_ADDRESS(address, INET);
+
+ addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
+
+ addr->s_addr = inet_addr(hostname);
+
+ /* If it is a numeric host name, convert it now */
+ if (addr->s_addr == INADDR_NONE)
+ {
+ struct in_addr *array_addr;
+
+ /* It is a real name, we solve it */
+ if ((he = gethostbyname(hostname)) == NULL)
+ {
+ /* addr->s_addr = INADDR_NONE just done by inet_addr() above */
+ address->m_error = GSOCK_NOHOST;
+ return GSOCK_NOHOST;
+ }
+ array_addr = (struct in_addr *) *(he->h_addr_list);
+ addr->s_addr = array_addr[0].s_addr;
+ }
+ return GSOCK_NOERROR;
+}
+
+GSocketError GAddress_INET_SetAnyAddress(GAddress *address)
+{
+ return GAddress_INET_SetHostAddress(address, INADDR_ANY);
+}
+
+GSocketError GAddress_INET_SetHostAddress(GAddress *address,
+ unsigned long hostaddr)
+{
+ struct in_addr *addr;
+
+ assert(address != NULL);
+
+ CHECK_ADDRESS(address, INET);
+
+ addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr);
+ addr->s_addr = htonl(hostaddr);;
+
+ return GSOCK_NOERROR;
+}
+
+GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port,
+ const char *protocol)
+{
+ struct servent *se;
+ struct sockaddr_in *addr;
+
+ assert(address != NULL);
+ CHECK_ADDRESS(address, INET);
+
+ if (!port)
+ {
+ address->m_error = GSOCK_INVPORT;
+ return GSOCK_INVPORT;
+ }
+
+ se = getservbyname(port, protocol);
+ if (!se)
+ {
+ if (isdigit(port[0]))
+ {
+ int port_int;
+
+ port_int = atoi(port);
+ addr = (struct sockaddr_in *)address->m_addr;
+ addr->sin_port = htons((u_short) port_int);
+ return GSOCK_NOERROR;
+ }
+
+ address->m_error = GSOCK_INVPORT;
+ return GSOCK_INVPORT;
+ }
+
+ addr = (struct sockaddr_in *)address->m_addr;
+ addr->sin_port = se->s_port;
+
+ return GSOCK_NOERROR;
+}
+
+GSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port)
+{
+ struct sockaddr_in *addr;
+
+ assert(address != NULL);
+ CHECK_ADDRESS(address, INET);
+
+ addr = (struct sockaddr_in *)address->m_addr;
+ addr->sin_port = htons(port);
+
+ return GSOCK_NOERROR;
+}
+
+GSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname, size_t sbuf)
+{
+ struct hostent *he;
+ char *addr_buf;
+ struct sockaddr_in *addr;
+
+ assert(address != NULL);
+ CHECK_ADDRESS(address, INET);
+
+ addr = (struct sockaddr_in *)address->m_addr;
+ addr_buf = (char *)&(addr->sin_addr);
+
+ he = gethostbyaddr(addr_buf, sizeof(addr->sin_addr), AF_INET);
+ if (he == NULL)
+ {
+ address->m_error = GSOCK_NOHOST;
+ return GSOCK_NOHOST;
+ }
+
+ strncpy(hostname, he->h_name, sbuf);
+
+ return GSOCK_NOERROR;
+}
+
+unsigned long GAddress_INET_GetHostAddress(GAddress *address)
+{
+ struct sockaddr_in *addr;
+
+ assert(address != NULL);
+ CHECK_ADDRESS_RETVAL(address, INET, 0);
+
+ addr = (struct sockaddr_in *)address->m_addr;
+
+ return ntohl(addr->sin_addr.s_addr);
+}
+
+unsigned short GAddress_INET_GetPort(GAddress *address)
+{
+ struct sockaddr_in *addr;
+
+ assert(address != NULL);
+ CHECK_ADDRESS_RETVAL(address, INET, 0);
+
+ addr = (struct sockaddr_in *)address->m_addr;
+ return ntohs(addr->sin_port);
+}
+
+/*
+ * -------------------------------------------------------------------------
+ * Unix address family
+ * -------------------------------------------------------------------------
+ */
+
+GSocketError _GAddress_Init_UNIX(GAddress *address)
+{
+ assert (address != NULL);
+ address->m_error = GSOCK_INVADDR;
+ return GSOCK_INVADDR;
+}
+
+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 void (*wxDummy)();
+
+#endif /* wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) */
+
projects / wxWidgets.git / commitdiff
