X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ef57d8662f4a9838adad363d6d3cdf512a7e924f..f2dec5b10d6fb8d05cadcf73ff53b5ed99de9c4e:/src/msw/gsocket.c diff --git a/src/msw/gsocket.c b/src/msw/gsocket.c index dc1090f625..6493dbfcec 100644 --- a/src/msw/gsocket.c +++ b/src/msw/gsocket.c @@ -11,32 +11,45 @@ * 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 + #ifndef __GSOCKET_STANDALONE__ -#include "wx/setup.h" +# include "wx/defs.h" +# include "wx/setup.h" #endif #if wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) #ifndef __GSOCKET_STANDALONE__ - -#include "wx/msw/gsockmsw.h" -#include "wx/gsocket.h" - -#define INSTANCE wxGetInstance() - +# include "wx/msw/gsockmsw.h" +# include "wx/gsocket.h" #else - -#include "gsockmsw.h" -#include "gsocket.h" - -/* If not using wxWindows, a global var called hInst must - * be available and it must containt the app's instance - * handle. - */ -#define INSTANCE hInst - +# include "gsockmsw.h" +# include "gsocket.h" #endif /* __GSOCKET_STANDALONE__ */ +/* Redefine some GUI-only functions to do nothing in console mode */ +#if defined(wxUSE_GUI) && !wxUSE_GUI +# define _GSocket_GUI_Init(socket) (1) +# define _GSocket_GUI_Destroy(socket) +# define _GSocket_Enable_Events(socket) +# define _GSocket_Disable_Events(socket) +#endif /* wxUSE_GUI */ #include #include @@ -44,90 +57,18 @@ #include #include #include -#include - -#define SOCKLEN_T int -#define CLASSNAME "_GSocket_Internal_Window_Class" -#define WINDOWNAME "_GSocket_Internal_Window_Name" -/* Maximum number of different GSocket objects at a given time. - * This value can be modified at will, but it CANNOT be greater - * than (0x7FFF - WM_USER + 1) - */ -#define MAXSOCKETS 1024 - -#if (MAXSOCKETS > (0x7FFF - WM_USER + 1)) -#error "MAXSOCKETS is too big!" +/* if we use configure for MSW SOCKLEN_T will be already defined */ +#ifndef SOCKLEN_T +# define SOCKLEN_T int #endif -/* Global variables */ - -extern HINSTANCE INSTANCE; -static HWND hWin; -static CRITICAL_SECTION critical; -static GSocket* socketList[MAXSOCKETS]; -static int firstAvailable; - -/* Global initializers */ - -bool GSocket_Init() -{ - WSADATA wsaData; - WNDCLASS winClass; - int i; - - /* Create internal window for event notifications */ - winClass.style = 0; - winClass.lpfnWndProc = _GSocket_Internal_WinProc; - winClass.cbClsExtra = 0; - winClass.cbWndExtra = 0; - winClass.hInstance = INSTANCE; - winClass.hIcon = (HICON) NULL; - winClass.hCursor = (HCURSOR) NULL; - winClass.hbrBackground = (HBRUSH) NULL; - winClass.lpszMenuName = (LPCTSTR) NULL; - winClass.lpszClassName = CLASSNAME; - - RegisterClass(&winClass); - hWin = CreateWindow(CLASSNAME, - WINDOWNAME, - 0, 0, 0, 0, 0, - (HWND) NULL, (HMENU) NULL, INSTANCE, (LPVOID) NULL); - - if (!hWin) return FALSE; - - /* Initialize socket list */ - InitializeCriticalSection(&critical); - - for (i = 0; i < MAXSOCKETS; i++) - { - socketList[i] = NULL; - } - firstAvailable = 0; - - /* Initialize WinSocket */ - return (WSAStartup((1 << 8) | 1, &wsaData) == 0); -} - -void GSocket_Cleanup() -{ - /* Destroy internal window */ - DestroyWindow(hWin); - UnregisterClass(CLASSNAME, INSTANCE); - - /* Delete critical section */ - DeleteCriticalSection(&critical); - - /* 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) @@ -138,48 +79,41 @@ GSocket *GSocket_new() { 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; - /* Allocate a new message number for this socket */ - EnterCriticalSection(&critical); - - i = firstAvailable; - while (socketList[i] != NULL) + /* Per-socket GUI-specific initialization */ + success = _GSocket_GUI_Init(socket); + if (!success) { - i = (i + 1) % MAXSOCKETS; - - if (i == firstAvailable) /* abort! */ - { - free(socket); - LeaveCriticalSection(&critical); - return NULL; - } + free(socket); + socket = NULL; } - socketList[i] = socket; - firstAvailable = (i + 1) % MAXSOCKETS; - socket->m_msgnumber = (i + WM_USER); - - LeaveCriticalSection(&critical); 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); - /* Remove the socket from the list */ - EnterCriticalSection(&critical); - socketList[(socket->m_msgnumber - WM_USER)] = NULL; - LeaveCriticalSection(&critical); + /* Per-socket GUI-specific cleanup */ + _GSocket_GUI_Destroy(socket); /* Check that the socket is really shutdowned */ if (socket->m_fd != INVALID_SOCKET) @@ -210,16 +144,14 @@ void GSocket_Shutdown(GSocket *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 */ for (evt = 0; evt < GSOCK_MAX_EVENT; evt++) socket->m_cbacks[evt] = NULL; - socket->m_detected = 0; - _GSocket_Disable_Events(socket); + socket->m_detected = GSOCK_LOST_FLAG; } /* Address handling */ @@ -343,11 +275,11 @@ GAddress *GSocket_GetPeer(GSocket *socket) * 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) { @@ -393,11 +325,10 @@ GSocketError GSocket_SetServer(GSocket *sck) 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, - &sck->m_local->m_len) != 0) || + (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; } @@ -415,7 +346,7 @@ GSocketError GSocket_SetServer(GSocket *sck) * 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) { @@ -518,7 +449,7 @@ 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) { @@ -546,6 +477,7 @@ 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, @@ -578,12 +510,11 @@ GSocketError GSocket_Connect(GSocket *sck, GSocketStream stream) 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 @@ -594,6 +525,7 @@ GSocketError GSocket_Connect(GSocket *sck, GSocketStream stream) */ if ((err == WSAEWOULDBLOCK) && (sck->m_non_blocking)) { + sck->m_establishing = TRUE; sck->m_error = GSOCK_WOULDBLOCK; return GSOCK_WOULDBLOCK; } @@ -601,8 +533,7 @@ GSocketError GSocket_Connect(GSocket *sck, GSocketStream stream) /* 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; } @@ -621,7 +552,7 @@ GSocketError GSocket_Connect(GSocket *sck, GSocketStream stream) * 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) { @@ -664,10 +595,9 @@ GSocketError GSocket_SetNonOriented(GSocket *sck) 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, - &sck->m_local->m_len) != 0)) + (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; } @@ -675,7 +605,6 @@ GSocketError GSocket_SetNonOriented(GSocket *sck) return GSOCK_NOERROR; } - /* Generic IO */ /* Like recv(), send(), ... */ @@ -766,9 +695,119 @@ int GSocket_Write(GSocket *socket, const char *buffer, int size) */ GSocketEventFlags GSocket_Select(GSocket *socket, GSocketEventFlags flags) { +#if defined(wxUSE_GUI) && !wxUSE_GUI + + GSocketEventFlags result = 0; + fd_set readfds; + fd_set writefds; + fd_set exceptfds; + static const struct timeval tv = { 0, 0 }; + assert(socket != NULL); + FD_ZERO(&readfds); + FD_ZERO(&writefds); + FD_ZERO(&exceptfds); + FD_SET(socket->m_fd, &readfds); + 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, &tv) <= 0) + { + /* What to do here? */ + return (result & flags); + } + + /* Check for readability */ + if (FD_ISSET(socket->m_fd, &readfds)) + { + char c; + + if (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 + + assert(socket != NULL); return flags & socket->m_detected; + +#endif /* !wxUSE_GUI */ } /* Attributes */ @@ -777,7 +816,7 @@ GSocketEventFlags GSocket_Select(GSocket *socket, GSocketEventFlags flags) * 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); @@ -808,7 +847,6 @@ GSocketError GSocket_GetError(GSocket *socket) return socket->m_error; } - /* Callbacks */ /* GSOCK_INPUT: @@ -816,7 +854,7 @@ GSocketError GSocket_GetError(GSocket *socket) * 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 @@ -876,108 +914,7 @@ void GSocket_UnsetCallback(GSocket *socket, GSocketEventFlags flags) } } - -/* Internals */ - -/* _GSocket_Enable_Events: - * Enable all event notifications; we need to be notified of all - * events for internal processing, but we will only notify users - * when an appropiate callback function has been installed. - */ -void _GSocket_Enable_Events(GSocket *socket) -{ - assert (socket != NULL); - - if (socket->m_fd != INVALID_SOCKET) - { - WSAAsyncSelect(socket->m_fd, hWin, socket->m_msgnumber, - FD_READ | FD_WRITE | FD_ACCEPT | FD_CONNECT | FD_CLOSE); - } -} - -/* _GSocket_Disable_Events: - * Disable event notifications (when shutdowning the socket) - */ -void _GSocket_Disable_Events(GSocket *socket) -{ - assert (socket != NULL); - - if (socket->m_fd != INVALID_SOCKET) - { - WSAAsyncSelect(socket->m_fd, hWin, socket->m_msgnumber, 0); - } -} - - -LRESULT CALLBACK _GSocket_Internal_WinProc(HWND hWnd, - UINT uMsg, - WPARAM wParam, - LPARAM lParam) -{ - GSocket *socket; - GSocketEvent event; - GSocketCallback cback; - char *data; - - if (uMsg >= WM_USER && uMsg <= (WM_USER + MAXSOCKETS - 1)) - { - EnterCriticalSection(&critical); - socket = socketList[(uMsg - WM_USER)]; - event = -1; - cback = NULL; - data = NULL; - - /* Check that the socket still exists (it has not been - * destroyed) and for safety, check that the m_fd field - * is what we expect it to be. - */ - if ((socket != NULL) && (socket->m_fd == wParam)) - { - switch WSAGETSELECTEVENT(lParam) - { - case FD_READ: event = GSOCK_INPUT; break; - case FD_WRITE: event = GSOCK_OUTPUT; break; - case FD_ACCEPT: event = GSOCK_CONNECTION; break; - case FD_CONNECT: - { - if (WSAGETSELECTERROR(lParam) != 0) - event = GSOCK_LOST; - else - event = GSOCK_CONNECTION; - break; - } - case FD_CLOSE: event = GSOCK_LOST; break; - } - - if (event != -1) - { - cback = socket->m_cbacks[event]; - data = socket->m_data[event]; - - if (event == GSOCK_LOST) - socket->m_detected = GSOCK_LOST_FLAG; - else - socket->m_detected |= (1 << event); - } - } - - /* OK, we can now leave the critical section because we have - * already obtained the callback address (we make no further - * accesses to socket->whatever). However, the app should - * be prepared to handle events from a socket that has just - * been closed! - */ - LeaveCriticalSection(&critical); - - if (cback != NULL) - (cback)(socket, event, data); - - return (LRESULT) 0; - } - else - return DefWindowProc(hWnd, uMsg, wParam, lParam); -} - +/* Internals (IO) */ /* _GSocket_Input_Timeout: * For blocking sockets, wait until data is available or @@ -1126,23 +1063,39 @@ int _GSocket_Send_Dgram(GSocket *socket, const char *buffer, int size) * ------------------------------------------------------------------------- */ -/* 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; @@ -1185,6 +1138,9 @@ void GAddress_destroy(GAddress *address) { assert(address != NULL); + if (address->m_addr) + free(address->m_addr); + free(address); } @@ -1294,7 +1250,7 @@ GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname) assert(address != NULL); - CHECK_ADDRESS(address, INET, GSOCK_INVADDR); + CHECK_ADDRESS(address, INET); addr = &(((struct sockaddr_in *)address->m_addr)->sin_addr); @@ -1330,7 +1286,7 @@ GSocketError GAddress_INET_SetHostAddress(GAddress *address, 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; @@ -1345,7 +1301,7 @@ GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port, struct sockaddr_in *addr; assert(address != NULL); - CHECK_ADDRESS(address, INET, GSOCK_INVADDR); + CHECK_ADDRESS(address, INET); if (!port) { @@ -1381,7 +1337,7 @@ GSocketError GAddress_INET_SetPort(GAddress *address, unsigned short 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); @@ -1396,7 +1352,7 @@ GSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname, size_t 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); @@ -1418,7 +1374,7 @@ unsigned long GAddress_INET_GetHostAddress(GAddress *address) 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; @@ -1430,7 +1386,7 @@ unsigned short GAddress_INET_GetPort(GAddress *address) 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); @@ -1465,10 +1421,11 @@ GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf) #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__) */ +