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dashley |
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/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tcl_base/tclwinsock.c,v 1.1.1.1 2001/06/13 04:50:36 dtashley Exp $ */
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/*
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* tclWinSock.c --
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*
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* This file contains Windows-specific socket related code.
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*
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* Copyright (c) 1995-1997 Sun Microsystems, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*
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* RCS: @(#) $Id: tclwinsock.c,v 1.1.1.1 2001/06/13 04:50:36 dtashley Exp $
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*/
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#include "tclWinInt.h"
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/*
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* The following variable is used to tell whether this module has been
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* initialized.
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*/
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static int initialized = 0;
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static int hostnameInitialized = 0;
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static char hostname[255]; /* This buffer should be big enough for
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* hostname plus domain name. */
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TCL_DECLARE_MUTEX(socketMutex)
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/*
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* The following structure contains pointers to all of the WinSock API entry
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* points used by Tcl. It is initialized by InitSockets. Since we
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* dynamically load Winsock.dll on demand, we must use this function table
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* to refer to functions in the socket API.
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*/
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static struct {
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HINSTANCE hInstance; /* Handle to WinSock library. */
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SOCKET (PASCAL FAR *accept)(SOCKET s, struct sockaddr FAR *addr,
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int FAR *addrlen);
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int (PASCAL FAR *bind)(SOCKET s, const struct sockaddr FAR *addr,
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int namelen);
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int (PASCAL FAR *closesocket)(SOCKET s);
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int (PASCAL FAR *connect)(SOCKET s, const struct sockaddr FAR *name,
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int namelen);
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int (PASCAL FAR *ioctlsocket)(SOCKET s, long cmd, u_long FAR *argp);
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int (PASCAL FAR *getsockopt)(SOCKET s, int level, int optname,
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char FAR * optval, int FAR *optlen);
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u_short (PASCAL FAR *htons)(u_short hostshort);
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unsigned long (PASCAL FAR *inet_addr)(const char FAR * cp);
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char FAR * (PASCAL FAR *inet_ntoa)(struct in_addr in);
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int (PASCAL FAR *listen)(SOCKET s, int backlog);
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u_short (PASCAL FAR *ntohs)(u_short netshort);
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int (PASCAL FAR *recv)(SOCKET s, char FAR * buf, int len, int flags);
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int (PASCAL FAR *select)(int nfds, fd_set FAR * readfds,
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fd_set FAR * writefds, fd_set FAR * exceptfds,
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const struct timeval FAR * tiemout);
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int (PASCAL FAR *send)(SOCKET s, const char FAR * buf, int len, int flags);
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int (PASCAL FAR *setsockopt)(SOCKET s, int level, int optname,
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const char FAR * optval, int optlen);
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int (PASCAL FAR *shutdown)(SOCKET s, int how);
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SOCKET (PASCAL FAR *socket)(int af, int type, int protocol);
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struct hostent FAR * (PASCAL FAR *gethostbyname)(const char FAR * name);
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struct hostent FAR * (PASCAL FAR *gethostbyaddr)(const char FAR *addr,
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int addrlen, int addrtype);
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int (PASCAL FAR *gethostname)(char FAR * name, int namelen);
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int (PASCAL FAR *getpeername)(SOCKET sock, struct sockaddr FAR *name,
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int FAR *namelen);
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struct servent FAR * (PASCAL FAR *getservbyname)(const char FAR * name,
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const char FAR * proto);
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int (PASCAL FAR *getsockname)(SOCKET sock, struct sockaddr FAR *name,
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int FAR *namelen);
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int (PASCAL FAR *WSAStartup)(WORD wVersionRequired, LPWSADATA lpWSAData);
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int (PASCAL FAR *WSACleanup)(void);
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int (PASCAL FAR *WSAGetLastError)(void);
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int (PASCAL FAR *WSAAsyncSelect)(SOCKET s, HWND hWnd, u_int wMsg,
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long lEvent);
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} winSock;
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/*
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* The following defines declare the messages used on socket windows.
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*/
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#define SOCKET_MESSAGE WM_USER+1
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#define SOCKET_SELECT WM_USER+2
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#define SOCKET_TERMINATE WM_USER+3
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#define SELECT TRUE
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#define UNSELECT FALSE
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/*
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* The following structure is used to store the data associated with
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* each socket.
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*/
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typedef struct SocketInfo {
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Tcl_Channel channel; /* Channel associated with this socket. */
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SOCKET socket; /* Windows SOCKET handle. */
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int flags; /* Bit field comprised of the flags
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* described below. */
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int watchEvents; /* OR'ed combination of FD_READ, FD_WRITE,
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* FD_CLOSE, FD_ACCEPT and FD_CONNECT that
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* indicate which events are interesting. */
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int readyEvents; /* OR'ed combination of FD_READ, FD_WRITE,
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* FD_CLOSE, FD_ACCEPT and FD_CONNECT that
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* indicate which events have occurred. */
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int selectEvents; /* OR'ed combination of FD_READ, FD_WRITE,
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* FD_CLOSE, FD_ACCEPT and FD_CONNECT that
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* indicate which events are currently
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* being selected. */
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int acceptEventCount; /* Count of the current number of FD_ACCEPTs
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* that have arrived and not processed. */
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Tcl_TcpAcceptProc *acceptProc; /* Proc to call on accept. */
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ClientData acceptProcData; /* The data for the accept proc. */
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int lastError; /* Error code from last message. */
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struct SocketInfo *nextPtr; /* The next socket on the global socket
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* list. */
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} SocketInfo;
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/*
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* The following structure is what is added to the Tcl event queue when
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* a socket event occurs.
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*/
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typedef struct SocketEvent {
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Tcl_Event header; /* Information that is standard for
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* all events. */
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SOCKET socket; /* Socket descriptor that is ready. Used
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* to find the SocketInfo structure for
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* the file (can't point directly to the
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* SocketInfo structure because it could
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* go away while the event is queued). */
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} SocketEvent;
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/*
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* This defines the minimum buffersize maintained by the kernel.
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*/
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#define TCP_BUFFER_SIZE 4096
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/*
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* The following macros may be used to set the flags field of
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* a SocketInfo structure.
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*/
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#define SOCKET_ASYNC (1<<0) /* The socket is in blocking mode. */
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#define SOCKET_EOF (1<<1) /* A zero read happened on
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* the socket. */
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#define SOCKET_ASYNC_CONNECT (1<<2) /* This socket uses async connect. */
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#define SOCKET_PENDING (1<<3) /* A message has been sent
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* for this socket */
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typedef struct ThreadSpecificData {
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/*
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* Every open socket has an entry on the following list.
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*/
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HWND hwnd; /* Handle to window for socket messages. */
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HANDLE socketThread; /* Thread handling the window */
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Tcl_ThreadId threadId; /* Parent thread. */
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HANDLE readyEvent; /* Event indicating that a socket event is ready.
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* Also used to indicate that the socketThread has
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* been initialized and has started. */
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HANDLE socketListLock; /* Win32 Event to lock the socketList */
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SocketInfo *socketList;
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} ThreadSpecificData;
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static Tcl_ThreadDataKey dataKey;
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static WNDCLASSA windowClass;
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/*
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* Static functions defined in this file.
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*/
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static SocketInfo * CreateSocket _ANSI_ARGS_((Tcl_Interp *interp,
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int port, char *host, int server, char *myaddr,
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int myport, int async));
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static int CreateSocketAddress _ANSI_ARGS_(
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(struct sockaddr_in *sockaddrPtr,
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char *host, int port));
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static void InitSockets _ANSI_ARGS_((void));
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static SocketInfo * NewSocketInfo _ANSI_ARGS_((SOCKET socket));
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static void SocketCheckProc _ANSI_ARGS_((ClientData clientData,
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int flags));
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static int SocketEventProc _ANSI_ARGS_((Tcl_Event *evPtr,
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int flags));
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static void SocketExitHandler _ANSI_ARGS_((ClientData clientData));
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static LRESULT CALLBACK SocketProc _ANSI_ARGS_((HWND hwnd, UINT message,
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WPARAM wParam, LPARAM lParam));
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static void SocketSetupProc _ANSI_ARGS_((ClientData clientData,
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int flags));
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static void SocketThreadExitHandler _ANSI_ARGS_((ClientData clientData));
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static int SocketsEnabled _ANSI_ARGS_((void));
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static void TcpAccept _ANSI_ARGS_((SocketInfo *infoPtr));
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static int TcpBlockProc _ANSI_ARGS_((ClientData instanceData,
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int mode));
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static int TcpCloseProc _ANSI_ARGS_((ClientData instanceData,
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Tcl_Interp *interp));
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static int TcpGetOptionProc _ANSI_ARGS_((ClientData instanceData,
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Tcl_Interp *interp, char *optionName,
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Tcl_DString *optionValue));
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static int TcpInputProc _ANSI_ARGS_((ClientData instanceData,
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char *buf, int toRead, int *errorCode));
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static int TcpOutputProc _ANSI_ARGS_((ClientData instanceData,
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char *buf, int toWrite, int *errorCode));
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static void TcpWatchProc _ANSI_ARGS_((ClientData instanceData,
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int mask));
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static int TcpGetHandleProc _ANSI_ARGS_((ClientData instanceData,
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int direction, ClientData *handlePtr));
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static int WaitForSocketEvent _ANSI_ARGS_((SocketInfo *infoPtr,
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int events, int *errorCodePtr));
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static DWORD WINAPI SocketThread _ANSI_ARGS_((LPVOID arg));
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/*
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* This structure describes the channel type structure for TCP socket
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* based IO.
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*/
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static Tcl_ChannelType tcpChannelType = {
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"tcp", /* Type name. */
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TcpBlockProc, /* Set socket into blocking/non-blocking mode. */
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TcpCloseProc, /* Close proc. */
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TcpInputProc, /* Input proc. */
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TcpOutputProc, /* Output proc. */
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NULL, /* Seek proc. */
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NULL, /* Set option proc. */
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TcpGetOptionProc, /* Get option proc. */
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TcpWatchProc, /* Initialize notifier to watch this channel. */
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TcpGetHandleProc, /* Get an OS handle from channel. */
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};
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/*
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* Define version of Winsock required by Tcl.
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*/
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#define WSA_VERSION_REQD MAKEWORD(1,1)
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/*
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*----------------------------------------------------------------------
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*
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* InitSockets --
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*
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* Initialize the socket module. Attempts to load the wsock32.dll
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* library and set up the winSock function table. If successful,
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* registers the event window for the socket notifier code.
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*
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* Assumes Mutex is held.
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*
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* Results:
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* None.
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*
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* Side effects:
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* Dynamically loads wsock32.dll, and registers a new window
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* class and creates a window for use in asynchronous socket
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* notification.
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*
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*----------------------------------------------------------------------
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*/
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static void
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InitSockets()
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{
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263 |
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DWORD id;
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WSADATA wsaData;
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ThreadSpecificData *tsdPtr =
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(ThreadSpecificData *)TclThreadDataKeyGet(&dataKey);
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if (! initialized) {
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initialized = 1;
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Tcl_CreateExitHandler(SocketExitHandler, (ClientData) NULL);
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winSock.hInstance = LoadLibraryA("wsock32.dll");
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273 |
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274 |
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/*
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275 |
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* Initialize the function table.
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276 |
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*/
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277 |
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278 |
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if (!SocketsEnabled()) {
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return;
|
280 |
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}
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281 |
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282 |
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winSock.accept = (SOCKET (PASCAL FAR *)(SOCKET s,
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struct sockaddr FAR *addr, int FAR *addrlen))
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GetProcAddress(winSock.hInstance, "accept");
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285 |
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winSock.bind = (int (PASCAL FAR *)(SOCKET s,
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286 |
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const struct sockaddr FAR *addr, int namelen))
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287 |
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GetProcAddress(winSock.hInstance, "bind");
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winSock.closesocket = (int (PASCAL FAR *)(SOCKET s))
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289 |
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GetProcAddress(winSock.hInstance, "closesocket");
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winSock.connect = (int (PASCAL FAR *)(SOCKET s,
|
291 |
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const struct sockaddr FAR *name, int namelen))
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292 |
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GetProcAddress(winSock.hInstance, "connect");
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293 |
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winSock.ioctlsocket = (int (PASCAL FAR *)(SOCKET s, long cmd,
|
294 |
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u_long FAR *argp))
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295 |
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GetProcAddress(winSock.hInstance, "ioctlsocket");
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296 |
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winSock.getsockopt = (int (PASCAL FAR *)(SOCKET s,
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297 |
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int level, int optname, char FAR * optval, int FAR *optlen))
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298 |
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GetProcAddress(winSock.hInstance, "getsockopt");
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299 |
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winSock.htons = (u_short (PASCAL FAR *)(u_short hostshort))
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GetProcAddress(winSock.hInstance, "htons");
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winSock.inet_addr = (unsigned long (PASCAL FAR *)(const char FAR *cp))
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GetProcAddress(winSock.hInstance, "inet_addr");
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winSock.inet_ntoa = (char FAR * (PASCAL FAR *)(struct in_addr in))
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304 |
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GetProcAddress(winSock.hInstance, "inet_ntoa");
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winSock.listen = (int (PASCAL FAR *)(SOCKET s, int backlog))
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GetProcAddress(winSock.hInstance, "listen");
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winSock.ntohs = (u_short (PASCAL FAR *)(u_short netshort))
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GetProcAddress(winSock.hInstance, "ntohs");
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winSock.recv = (int (PASCAL FAR *)(SOCKET s, char FAR * buf,
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310 |
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int len, int flags)) GetProcAddress(winSock.hInstance, "recv");
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311 |
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winSock.select = (int (PASCAL FAR *)(int nfds, fd_set FAR * readfds,
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312 |
|
|
fd_set FAR * writefds, fd_set FAR * exceptfds,
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313 |
|
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const struct timeval FAR * tiemout))
|
314 |
|
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GetProcAddress(winSock.hInstance, "select");
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|
|
winSock.send = (int (PASCAL FAR *)(SOCKET s, const char FAR * buf,
|
316 |
|
|
int len, int flags)) GetProcAddress(winSock.hInstance, "send");
|
317 |
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|
winSock.setsockopt = (int (PASCAL FAR *)(SOCKET s, int level,
|
318 |
|
|
int optname, const char FAR * optval, int optlen))
|
319 |
|
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GetProcAddress(winSock.hInstance, "setsockopt");
|
320 |
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|
winSock.shutdown = (int (PASCAL FAR *)(SOCKET s, int how))
|
321 |
|
|
GetProcAddress(winSock.hInstance, "shutdown");
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322 |
|
|
winSock.socket = (SOCKET (PASCAL FAR *)(int af, int type,
|
323 |
|
|
int protocol)) GetProcAddress(winSock.hInstance, "socket");
|
324 |
|
|
winSock.gethostbyaddr = (struct hostent FAR * (PASCAL FAR *)
|
325 |
|
|
(const char FAR *addr, int addrlen, int addrtype))
|
326 |
|
|
GetProcAddress(winSock.hInstance, "gethostbyaddr");
|
327 |
|
|
winSock.gethostbyname = (struct hostent FAR * (PASCAL FAR *)
|
328 |
|
|
(const char FAR *name))
|
329 |
|
|
GetProcAddress(winSock.hInstance, "gethostbyname");
|
330 |
|
|
winSock.gethostname = (int (PASCAL FAR *)(char FAR * name,
|
331 |
|
|
int namelen)) GetProcAddress(winSock.hInstance, "gethostname");
|
332 |
|
|
winSock.getpeername = (int (PASCAL FAR *)(SOCKET sock,
|
333 |
|
|
struct sockaddr FAR *name, int FAR *namelen))
|
334 |
|
|
GetProcAddress(winSock.hInstance, "getpeername");
|
335 |
|
|
winSock.getservbyname = (struct servent FAR * (PASCAL FAR *)
|
336 |
|
|
(const char FAR * name, const char FAR * proto))
|
337 |
|
|
GetProcAddress(winSock.hInstance, "getservbyname");
|
338 |
|
|
winSock.getsockname = (int (PASCAL FAR *)(SOCKET sock,
|
339 |
|
|
struct sockaddr FAR *name, int FAR *namelen))
|
340 |
|
|
GetProcAddress(winSock.hInstance, "getsockname");
|
341 |
|
|
winSock.WSAStartup = (int (PASCAL FAR *)(WORD wVersionRequired,
|
342 |
|
|
LPWSADATA lpWSAData)) GetProcAddress(winSock.hInstance, "WSAStartup");
|
343 |
|
|
winSock.WSACleanup = (int (PASCAL FAR *)(void))
|
344 |
|
|
GetProcAddress(winSock.hInstance, "WSACleanup");
|
345 |
|
|
winSock.WSAGetLastError = (int (PASCAL FAR *)(void))
|
346 |
|
|
GetProcAddress(winSock.hInstance, "WSAGetLastError");
|
347 |
|
|
winSock.WSAAsyncSelect = (int (PASCAL FAR *)(SOCKET s, HWND hWnd,
|
348 |
|
|
u_int wMsg, long lEvent))
|
349 |
|
|
GetProcAddress(winSock.hInstance, "WSAAsyncSelect");
|
350 |
|
|
|
351 |
|
|
/*
|
352 |
|
|
* Now check that all fields are properly initialized. If not, return
|
353 |
|
|
* zero to indicate that we failed to initialize properly.
|
354 |
|
|
*/
|
355 |
|
|
|
356 |
|
|
if ((winSock.hInstance == NULL) ||
|
357 |
|
|
(winSock.accept == NULL) ||
|
358 |
|
|
(winSock.bind == NULL) ||
|
359 |
|
|
(winSock.closesocket == NULL) ||
|
360 |
|
|
(winSock.connect == NULL) ||
|
361 |
|
|
(winSock.ioctlsocket == NULL) ||
|
362 |
|
|
(winSock.getsockopt == NULL) ||
|
363 |
|
|
(winSock.htons == NULL) ||
|
364 |
|
|
(winSock.inet_addr == NULL) ||
|
365 |
|
|
(winSock.inet_ntoa == NULL) ||
|
366 |
|
|
(winSock.listen == NULL) ||
|
367 |
|
|
(winSock.ntohs == NULL) ||
|
368 |
|
|
(winSock.recv == NULL) ||
|
369 |
|
|
(winSock.select == NULL) ||
|
370 |
|
|
(winSock.send == NULL) ||
|
371 |
|
|
(winSock.setsockopt == NULL) ||
|
372 |
|
|
(winSock.socket == NULL) ||
|
373 |
|
|
(winSock.gethostbyname == NULL) ||
|
374 |
|
|
(winSock.gethostbyaddr == NULL) ||
|
375 |
|
|
(winSock.gethostname == NULL) ||
|
376 |
|
|
(winSock.getpeername == NULL) ||
|
377 |
|
|
(winSock.getservbyname == NULL) ||
|
378 |
|
|
(winSock.getsockname == NULL) ||
|
379 |
|
|
(winSock.WSAStartup == NULL) ||
|
380 |
|
|
(winSock.WSACleanup == NULL) ||
|
381 |
|
|
(winSock.WSAGetLastError == NULL) ||
|
382 |
|
|
(winSock.WSAAsyncSelect == NULL)) {
|
383 |
|
|
goto unloadLibrary;
|
384 |
|
|
}
|
385 |
|
|
|
386 |
|
|
/*
|
387 |
|
|
* Create the async notification window with a new class. We
|
388 |
|
|
* must create a new class to avoid a Windows 95 bug that causes
|
389 |
|
|
* us to get the wrong message number for socket events if the
|
390 |
|
|
* message window is a subclass of a static control.
|
391 |
|
|
*/
|
392 |
|
|
|
393 |
|
|
windowClass.style = 0;
|
394 |
|
|
windowClass.cbClsExtra = 0;
|
395 |
|
|
windowClass.cbWndExtra = 0;
|
396 |
|
|
windowClass.hInstance = TclWinGetTclInstance();
|
397 |
|
|
windowClass.hbrBackground = NULL;
|
398 |
|
|
windowClass.lpszMenuName = NULL;
|
399 |
|
|
windowClass.lpszClassName = "TclSocket";
|
400 |
|
|
windowClass.lpfnWndProc = SocketProc;
|
401 |
|
|
windowClass.hIcon = NULL;
|
402 |
|
|
windowClass.hCursor = NULL;
|
403 |
|
|
|
404 |
|
|
if (!RegisterClassA(&windowClass)) {
|
405 |
|
|
TclWinConvertError(GetLastError());
|
406 |
|
|
(*winSock.WSACleanup)();
|
407 |
|
|
goto unloadLibrary;
|
408 |
|
|
}
|
409 |
|
|
|
410 |
|
|
/*
|
411 |
|
|
* Initialize the winsock library and check the version number.
|
412 |
|
|
*/
|
413 |
|
|
|
414 |
|
|
if ((*winSock.WSAStartup)(WSA_VERSION_REQD, &wsaData) != 0) {
|
415 |
|
|
goto unloadLibrary;
|
416 |
|
|
}
|
417 |
|
|
if (wsaData.wVersion != WSA_VERSION_REQD) {
|
418 |
|
|
(*winSock.WSACleanup)();
|
419 |
|
|
goto unloadLibrary;
|
420 |
|
|
}
|
421 |
|
|
}
|
422 |
|
|
|
423 |
|
|
/*
|
424 |
|
|
* Check for per-thread initialization.
|
425 |
|
|
*/
|
426 |
|
|
|
427 |
|
|
if (tsdPtr == NULL) {
|
428 |
|
|
tsdPtr = TCL_TSD_INIT(&dataKey);
|
429 |
|
|
tsdPtr->socketList = NULL;
|
430 |
|
|
tsdPtr->hwnd = NULL;
|
431 |
|
|
|
432 |
|
|
tsdPtr->threadId = Tcl_GetCurrentThread();
|
433 |
|
|
|
434 |
|
|
tsdPtr->readyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
|
435 |
|
|
tsdPtr->socketListLock = CreateEvent(NULL, FALSE, TRUE, NULL);
|
436 |
|
|
tsdPtr->socketThread = CreateThread(NULL, 8000, SocketThread,
|
437 |
|
|
tsdPtr, 0, &id);
|
438 |
|
|
SetThreadPriority(tsdPtr->socketThread, THREAD_PRIORITY_HIGHEST);
|
439 |
|
|
|
440 |
|
|
if (tsdPtr->socketThread == NULL) {
|
441 |
|
|
goto unloadLibrary;
|
442 |
|
|
}
|
443 |
|
|
|
444 |
|
|
|
445 |
|
|
/*
|
446 |
|
|
* Wait for the thread to signal that the window has
|
447 |
|
|
* been created and is ready to go. Timeout after twenty
|
448 |
|
|
* seconds.
|
449 |
|
|
*/
|
450 |
|
|
|
451 |
|
|
if (WaitForSingleObject(tsdPtr->readyEvent, 20000) == WAIT_TIMEOUT) {
|
452 |
|
|
goto unloadLibrary;
|
453 |
|
|
}
|
454 |
|
|
|
455 |
|
|
if (tsdPtr->hwnd == NULL) {
|
456 |
|
|
goto unloadLibrary;
|
457 |
|
|
}
|
458 |
|
|
|
459 |
|
|
Tcl_CreateEventSource(SocketSetupProc, SocketCheckProc, NULL);
|
460 |
|
|
Tcl_CreateThreadExitHandler(SocketThreadExitHandler, NULL);
|
461 |
|
|
}
|
462 |
|
|
return;
|
463 |
|
|
|
464 |
|
|
unloadLibrary:
|
465 |
|
|
if (tsdPtr != NULL) {
|
466 |
|
|
if (tsdPtr->hwnd != NULL) {
|
467 |
|
|
DestroyWindow(tsdPtr->hwnd);
|
468 |
|
|
}
|
469 |
|
|
if (tsdPtr->socketThread != NULL) {
|
470 |
|
|
TerminateThread(tsdPtr->socketThread, 0);
|
471 |
|
|
tsdPtr->socketThread = NULL;
|
472 |
|
|
}
|
473 |
|
|
CloseHandle(tsdPtr->readyEvent);
|
474 |
|
|
CloseHandle(tsdPtr->socketListLock);
|
475 |
|
|
}
|
476 |
|
|
FreeLibrary(winSock.hInstance);
|
477 |
|
|
winSock.hInstance = NULL;
|
478 |
|
|
return;
|
479 |
|
|
}
|
480 |
|
|
|
481 |
|
|
/*
|
482 |
|
|
*----------------------------------------------------------------------
|
483 |
|
|
*
|
484 |
|
|
* SocketsEnabled --
|
485 |
|
|
*
|
486 |
|
|
* Check that the WinSock DLL is loaded and ready.
|
487 |
|
|
*
|
488 |
|
|
* Results:
|
489 |
|
|
* 1 if it is.
|
490 |
|
|
*
|
491 |
|
|
* Side effects:
|
492 |
|
|
* None.
|
493 |
|
|
*
|
494 |
|
|
*----------------------------------------------------------------------
|
495 |
|
|
*/
|
496 |
|
|
|
497 |
|
|
/* ARGSUSED */
|
498 |
|
|
static int
|
499 |
|
|
SocketsEnabled()
|
500 |
|
|
{
|
501 |
|
|
int enabled;
|
502 |
|
|
Tcl_MutexLock(&socketMutex);
|
503 |
|
|
enabled = (winSock.hInstance != NULL);
|
504 |
|
|
Tcl_MutexUnlock(&socketMutex);
|
505 |
|
|
return enabled;
|
506 |
|
|
}
|
507 |
|
|
|
508 |
|
|
|
509 |
|
|
/*
|
510 |
|
|
*----------------------------------------------------------------------
|
511 |
|
|
*
|
512 |
|
|
* SocketExitHandler --
|
513 |
|
|
*
|
514 |
|
|
* Callback invoked during exit clean up to delete the socket
|
515 |
|
|
* communication window and to release the WinSock DLL.
|
516 |
|
|
*
|
517 |
|
|
* Results:
|
518 |
|
|
* None.
|
519 |
|
|
*
|
520 |
|
|
* Side effects:
|
521 |
|
|
* None.
|
522 |
|
|
*
|
523 |
|
|
*----------------------------------------------------------------------
|
524 |
|
|
*/
|
525 |
|
|
|
526 |
|
|
/* ARGSUSED */
|
527 |
|
|
static void
|
528 |
|
|
SocketExitHandler(clientData)
|
529 |
|
|
ClientData clientData; /* Not used. */
|
530 |
|
|
{
|
531 |
|
|
Tcl_MutexLock(&socketMutex);
|
532 |
|
|
if (winSock.hInstance) {
|
533 |
|
|
UnregisterClassA("TclSocket", TclWinGetTclInstance());
|
534 |
|
|
(*winSock.WSACleanup)();
|
535 |
|
|
FreeLibrary(winSock.hInstance);
|
536 |
|
|
winSock.hInstance = NULL;
|
537 |
|
|
}
|
538 |
|
|
initialized = 0;
|
539 |
|
|
hostnameInitialized = 0;
|
540 |
|
|
Tcl_MutexUnlock(&socketMutex);
|
541 |
|
|
}
|
542 |
|
|
|
543 |
|
|
/*
|
544 |
|
|
*----------------------------------------------------------------------
|
545 |
|
|
*
|
546 |
|
|
* SocketThreadExitHandler --
|
547 |
|
|
*
|
548 |
|
|
* Callback invoked during thread clean up to delete the socket
|
549 |
|
|
* event source.
|
550 |
|
|
*
|
551 |
|
|
* Results:
|
552 |
|
|
* None.
|
553 |
|
|
*
|
554 |
|
|
* Side effects:
|
555 |
|
|
* Delete the event source.
|
556 |
|
|
*
|
557 |
|
|
*----------------------------------------------------------------------
|
558 |
|
|
*/
|
559 |
|
|
|
560 |
|
|
/* ARGSUSED */
|
561 |
|
|
static void
|
562 |
|
|
SocketThreadExitHandler(clientData)
|
563 |
|
|
ClientData clientData; /* Not used. */
|
564 |
|
|
{
|
565 |
|
|
ThreadSpecificData *tsdPtr =
|
566 |
|
|
(ThreadSpecificData *)TclThreadDataKeyGet(&dataKey);
|
567 |
|
|
|
568 |
|
|
if (tsdPtr->socketThread != NULL) {
|
569 |
|
|
|
570 |
|
|
PostMessage(tsdPtr->hwnd, SOCKET_TERMINATE, 0, 0);
|
571 |
|
|
|
572 |
|
|
/*
|
573 |
|
|
* Wait for the thread to terminate. This ensures that we are
|
574 |
|
|
* completely cleaned up before we leave this function.
|
575 |
|
|
*/
|
576 |
|
|
|
577 |
|
|
WaitForSingleObject(tsdPtr->socketThread, INFINITE);
|
578 |
|
|
CloseHandle(tsdPtr->socketThread);
|
579 |
|
|
CloseHandle(tsdPtr->readyEvent);
|
580 |
|
|
CloseHandle(tsdPtr->socketListLock);
|
581 |
|
|
|
582 |
|
|
}
|
583 |
|
|
if (tsdPtr->hwnd != NULL) {
|
584 |
|
|
DestroyWindow(tsdPtr->hwnd);
|
585 |
|
|
}
|
586 |
|
|
|
587 |
|
|
Tcl_DeleteEventSource(SocketSetupProc, SocketCheckProc, NULL);
|
588 |
|
|
}
|
589 |
|
|
|
590 |
|
|
/*
|
591 |
|
|
*----------------------------------------------------------------------
|
592 |
|
|
*
|
593 |
|
|
* TclpHasSockets --
|
594 |
|
|
*
|
595 |
|
|
* This function determines whether sockets are available on the
|
596 |
|
|
* current system and returns an error in interp if they are not.
|
597 |
|
|
* Note that interp may be NULL.
|
598 |
|
|
*
|
599 |
|
|
* Results:
|
600 |
|
|
* Returns TCL_OK if the system supports sockets, or TCL_ERROR with
|
601 |
|
|
* an error in interp.
|
602 |
|
|
*
|
603 |
|
|
* Side effects:
|
604 |
|
|
* None.
|
605 |
|
|
*
|
606 |
|
|
*----------------------------------------------------------------------
|
607 |
|
|
*/
|
608 |
|
|
|
609 |
|
|
int
|
610 |
|
|
TclpHasSockets(interp)
|
611 |
|
|
Tcl_Interp *interp;
|
612 |
|
|
{
|
613 |
|
|
Tcl_MutexLock(&socketMutex);
|
614 |
|
|
InitSockets();
|
615 |
|
|
Tcl_MutexUnlock(&socketMutex);
|
616 |
|
|
|
617 |
|
|
if (SocketsEnabled()) {
|
618 |
|
|
return TCL_OK;
|
619 |
|
|
}
|
620 |
|
|
if (interp != NULL) {
|
621 |
|
|
Tcl_AppendResult(interp, "sockets are not available on this system",
|
622 |
|
|
NULL);
|
623 |
|
|
}
|
624 |
|
|
return TCL_ERROR;
|
625 |
|
|
}
|
626 |
|
|
|
627 |
|
|
/*
|
628 |
|
|
*----------------------------------------------------------------------
|
629 |
|
|
*
|
630 |
|
|
* SocketSetupProc --
|
631 |
|
|
*
|
632 |
|
|
* This procedure is invoked before Tcl_DoOneEvent blocks waiting
|
633 |
|
|
* for an event.
|
634 |
|
|
*
|
635 |
|
|
* Results:
|
636 |
|
|
* None.
|
637 |
|
|
*
|
638 |
|
|
* Side effects:
|
639 |
|
|
* Adjusts the block time if needed.
|
640 |
|
|
*
|
641 |
|
|
*----------------------------------------------------------------------
|
642 |
|
|
*/
|
643 |
|
|
|
644 |
|
|
void
|
645 |
|
|
SocketSetupProc(data, flags)
|
646 |
|
|
ClientData data; /* Not used. */
|
647 |
|
|
int flags; /* Event flags as passed to Tcl_DoOneEvent. */
|
648 |
|
|
{
|
649 |
|
|
SocketInfo *infoPtr;
|
650 |
|
|
Tcl_Time blockTime = { 0, 0 };
|
651 |
|
|
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
|
652 |
|
|
|
653 |
|
|
if (!(flags & TCL_FILE_EVENTS)) {
|
654 |
|
|
return;
|
655 |
|
|
}
|
656 |
|
|
|
657 |
|
|
/*
|
658 |
|
|
* Check to see if there is a ready socket. If so, poll.
|
659 |
|
|
*/
|
660 |
|
|
|
661 |
|
|
WaitForSingleObject(tsdPtr->socketListLock, INFINITE);
|
662 |
|
|
for (infoPtr = tsdPtr->socketList; infoPtr != NULL;
|
663 |
|
|
infoPtr = infoPtr->nextPtr) {
|
664 |
|
|
if (infoPtr->readyEvents & infoPtr->watchEvents) {
|
665 |
|
|
Tcl_SetMaxBlockTime(&blockTime);
|
666 |
|
|
break;
|
667 |
|
|
}
|
668 |
|
|
}
|
669 |
|
|
SetEvent(tsdPtr->socketListLock);
|
670 |
|
|
}
|
671 |
|
|
|
672 |
|
|
/*
|
673 |
|
|
*----------------------------------------------------------------------
|
674 |
|
|
*
|
675 |
|
|
* SocketCheckProc --
|
676 |
|
|
*
|
677 |
|
|
* This procedure is called by Tcl_DoOneEvent to check the socket
|
678 |
|
|
* event source for events.
|
679 |
|
|
*
|
680 |
|
|
* Results:
|
681 |
|
|
* None.
|
682 |
|
|
*
|
683 |
|
|
* Side effects:
|
684 |
|
|
* May queue an event.
|
685 |
|
|
*
|
686 |
|
|
*----------------------------------------------------------------------
|
687 |
|
|
*/
|
688 |
|
|
|
689 |
|
|
static void
|
690 |
|
|
SocketCheckProc(data, flags)
|
691 |
|
|
ClientData data; /* Not used. */
|
692 |
|
|
int flags; /* Event flags as passed to Tcl_DoOneEvent. */
|
693 |
|
|
{
|
694 |
|
|
SocketInfo *infoPtr;
|
695 |
|
|
SocketEvent *evPtr;
|
696 |
|
|
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
|
697 |
|
|
|
698 |
|
|
if (!(flags & TCL_FILE_EVENTS)) {
|
699 |
|
|
return;
|
700 |
|
|
}
|
701 |
|
|
|
702 |
|
|
/*
|
703 |
|
|
* Queue events for any ready sockets that don't already have events
|
704 |
|
|
* queued (caused by persistent states that won't generate WinSock
|
705 |
|
|
* events).
|
706 |
|
|
*/
|
707 |
|
|
|
708 |
|
|
WaitForSingleObject(tsdPtr->socketListLock, INFINITE);
|
709 |
|
|
for (infoPtr = tsdPtr->socketList; infoPtr != NULL;
|
710 |
|
|
infoPtr = infoPtr->nextPtr) {
|
711 |
|
|
if ((infoPtr->readyEvents & infoPtr->watchEvents)
|
712 |
|
|
&& !(infoPtr->flags & SOCKET_PENDING)) {
|
713 |
|
|
infoPtr->flags |= SOCKET_PENDING;
|
714 |
|
|
evPtr = (SocketEvent *) ckalloc(sizeof(SocketEvent));
|
715 |
|
|
evPtr->header.proc = SocketEventProc;
|
716 |
|
|
evPtr->socket = infoPtr->socket;
|
717 |
|
|
Tcl_QueueEvent((Tcl_Event *) evPtr, TCL_QUEUE_TAIL);
|
718 |
|
|
}
|
719 |
|
|
}
|
720 |
|
|
SetEvent(tsdPtr->socketListLock);
|
721 |
|
|
}
|
722 |
|
|
|
723 |
|
|
/*
|
724 |
|
|
*----------------------------------------------------------------------
|
725 |
|
|
*
|
726 |
|
|
* SocketEventProc --
|
727 |
|
|
*
|
728 |
|
|
* This procedure is called by Tcl_ServiceEvent when a socket event
|
729 |
|
|
* reaches the front of the event queue. This procedure is
|
730 |
|
|
* responsible for notifying the generic channel code.
|
731 |
|
|
*
|
732 |
|
|
* Results:
|
733 |
|
|
* Returns 1 if the event was handled, meaning it should be removed
|
734 |
|
|
* from the queue. Returns 0 if the event was not handled, meaning
|
735 |
|
|
* it should stay on the queue. The only time the event isn't
|
736 |
|
|
* handled is if the TCL_FILE_EVENTS flag bit isn't set.
|
737 |
|
|
*
|
738 |
|
|
* Side effects:
|
739 |
|
|
* Whatever the channel callback procedures do.
|
740 |
|
|
*
|
741 |
|
|
*----------------------------------------------------------------------
|
742 |
|
|
*/
|
743 |
|
|
|
744 |
|
|
static int
|
745 |
|
|
SocketEventProc(evPtr, flags)
|
746 |
|
|
Tcl_Event *evPtr; /* Event to service. */
|
747 |
|
|
int flags; /* Flags that indicate what events to
|
748 |
|
|
* handle, such as TCL_FILE_EVENTS. */
|
749 |
|
|
{
|
750 |
|
|
SocketInfo *infoPtr;
|
751 |
|
|
SocketEvent *eventPtr = (SocketEvent *) evPtr;
|
752 |
|
|
int mask = 0;
|
753 |
|
|
int events;
|
754 |
|
|
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
|
755 |
|
|
|
756 |
|
|
if (!(flags & TCL_FILE_EVENTS)) {
|
757 |
|
|
return 0;
|
758 |
|
|
}
|
759 |
|
|
|
760 |
|
|
/*
|
761 |
|
|
* Find the specified socket on the socket list.
|
762 |
|
|
*/
|
763 |
|
|
|
764 |
|
|
WaitForSingleObject(tsdPtr->socketListLock, INFINITE);
|
765 |
|
|
for (infoPtr = tsdPtr->socketList; infoPtr != NULL;
|
766 |
|
|
infoPtr = infoPtr->nextPtr) {
|
767 |
|
|
if (infoPtr->socket == eventPtr->socket) {
|
768 |
|
|
break;
|
769 |
|
|
}
|
770 |
|
|
}
|
771 |
|
|
SetEvent(tsdPtr->socketListLock);
|
772 |
|
|
|
773 |
|
|
/*
|
774 |
|
|
* Discard events that have gone stale.
|
775 |
|
|
*/
|
776 |
|
|
|
777 |
|
|
if (!infoPtr) {
|
778 |
|
|
return 1;
|
779 |
|
|
}
|
780 |
|
|
|
781 |
|
|
infoPtr->flags &= ~SOCKET_PENDING;
|
782 |
|
|
|
783 |
|
|
/*
|
784 |
|
|
* Handle connection requests directly.
|
785 |
|
|
*/
|
786 |
|
|
|
787 |
|
|
if (infoPtr->readyEvents & FD_ACCEPT) {
|
788 |
|
|
TcpAccept(infoPtr);
|
789 |
|
|
return 1;
|
790 |
|
|
}
|
791 |
|
|
|
792 |
|
|
|
793 |
|
|
/*
|
794 |
|
|
* Mask off unwanted events and compute the read/write mask so
|
795 |
|
|
* we can notify the channel.
|
796 |
|
|
*/
|
797 |
|
|
|
798 |
|
|
events = infoPtr->readyEvents & infoPtr->watchEvents;
|
799 |
|
|
|
800 |
|
|
if (events & FD_CLOSE) {
|
801 |
|
|
/*
|
802 |
|
|
* If the socket was closed and the channel is still interested
|
803 |
|
|
* in read events, then we need to ensure that we keep polling
|
804 |
|
|
* for this event until someone does something with the channel.
|
805 |
|
|
* Note that we do this before calling Tcl_NotifyChannel so we don't
|
806 |
|
|
* have to watch out for the channel being deleted out from under
|
807 |
|
|
* us. This may cause a redundant trip through the event loop, but
|
808 |
|
|
* it's simpler than trying to do unwind protection.
|
809 |
|
|
*/
|
810 |
|
|
|
811 |
|
|
Tcl_Time blockTime = { 0, 0 };
|
812 |
|
|
Tcl_SetMaxBlockTime(&blockTime);
|
813 |
|
|
mask |= TCL_READABLE;
|
814 |
|
|
} else if (events & FD_READ) {
|
815 |
|
|
fd_set readFds;
|
816 |
|
|
struct timeval timeout;
|
817 |
|
|
|
818 |
|
|
/*
|
819 |
|
|
* We must check to see if data is really available, since someone
|
820 |
|
|
* could have consumed the data in the meantime. Turn off async
|
821 |
|
|
* notification so select will work correctly. If the socket is
|
822 |
|
|
* still readable, notify the channel driver, otherwise reset the
|
823 |
|
|
* async select handler and keep waiting.
|
824 |
|
|
*/
|
825 |
|
|
|
826 |
|
|
SendMessage(tsdPtr->hwnd, SOCKET_SELECT,
|
827 |
|
|
(WPARAM) UNSELECT, (LPARAM) infoPtr);
|
828 |
|
|
|
829 |
|
|
FD_ZERO(&readFds);
|
830 |
|
|
FD_SET(infoPtr->socket, &readFds);
|
831 |
|
|
timeout.tv_usec = 0;
|
832 |
|
|
timeout.tv_sec = 0;
|
833 |
|
|
|
834 |
|
|
if ((*winSock.select)(0, &readFds, NULL, NULL, &timeout) != 0) {
|
835 |
|
|
mask |= TCL_READABLE;
|
836 |
|
|
} else {
|
837 |
|
|
SendMessage(tsdPtr->hwnd, SOCKET_SELECT,
|
838 |
|
|
(WPARAM) SELECT, (LPARAM) infoPtr);
|
839 |
|
|
infoPtr->readyEvents &= ~(FD_READ);
|
840 |
|
|
}
|
841 |
|
|
}
|
842 |
|
|
if (events & (FD_WRITE | FD_CONNECT)) {
|
843 |
|
|
mask |= TCL_WRITABLE;
|
844 |
|
|
}
|
845 |
|
|
|
846 |
|
|
if (mask) {
|
847 |
|
|
Tcl_NotifyChannel(infoPtr->channel, mask);
|
848 |
|
|
}
|
849 |
|
|
return 1;
|
850 |
|
|
}
|
851 |
|
|
|
852 |
|
|
/*
|
853 |
|
|
*----------------------------------------------------------------------
|
854 |
|
|
*
|
855 |
|
|
* TcpBlockProc --
|
856 |
|
|
*
|
857 |
|
|
* Sets a socket into blocking or non-blocking mode.
|
858 |
|
|
*
|
859 |
|
|
* Results:
|
860 |
|
|
* 0 if successful, errno if there was an error.
|
861 |
|
|
*
|
862 |
|
|
* Side effects:
|
863 |
|
|
* None.
|
864 |
|
|
*
|
865 |
|
|
*----------------------------------------------------------------------
|
866 |
|
|
*/
|
867 |
|
|
|
868 |
|
|
static int
|
869 |
|
|
TcpBlockProc(instanceData, mode)
|
870 |
|
|
ClientData instanceData; /* The socket to block/un-block. */
|
871 |
|
|
int mode; /* TCL_MODE_BLOCKING or
|
872 |
|
|
* TCL_MODE_NONBLOCKING. */
|
873 |
|
|
{
|
874 |
|
|
SocketInfo *infoPtr = (SocketInfo *) instanceData;
|
875 |
|
|
|
876 |
|
|
if (mode == TCL_MODE_NONBLOCKING) {
|
877 |
|
|
infoPtr->flags |= SOCKET_ASYNC;
|
878 |
|
|
} else {
|
879 |
|
|
infoPtr->flags &= ~(SOCKET_ASYNC);
|
880 |
|
|
}
|
881 |
|
|
return 0;
|
882 |
|
|
}
|
883 |
|
|
|
884 |
|
|
/*
|
885 |
|
|
*----------------------------------------------------------------------
|
886 |
|
|
*
|
887 |
|
|
* TcpCloseProc --
|
888 |
|
|
*
|
889 |
|
|
* This procedure is called by the generic IO level to perform
|
890 |
|
|
* channel type specific cleanup on a socket based channel
|
891 |
|
|
* when the channel is closed.
|
892 |
|
|
*
|
893 |
|
|
* Results:
|
894 |
|
|
* 0 if successful, the value of errno if failed.
|
895 |
|
|
*
|
896 |
|
|
* Side effects:
|
897 |
|
|
* Closes the socket.
|
898 |
|
|
*
|
899 |
|
|
*----------------------------------------------------------------------
|
900 |
|
|
*/
|
901 |
|
|
|
902 |
|
|
/* ARGSUSED */
|
903 |
|
|
static int
|
904 |
|
|
TcpCloseProc(instanceData, interp)
|
905 |
|
|
ClientData instanceData; /* The socket to close. */
|
906 |
|
|
Tcl_Interp *interp; /* Unused. */
|
907 |
|
|
{
|
908 |
|
|
SocketInfo *infoPtr = (SocketInfo *) instanceData;
|
909 |
|
|
SocketInfo **nextPtrPtr;
|
910 |
|
|
int errorCode = 0;
|
911 |
|
|
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
|
912 |
|
|
|
913 |
|
|
/*
|
914 |
|
|
* Check that WinSock is initialized; do not call it if not, to
|
915 |
|
|
* prevent system crashes. This can happen at exit time if the exit
|
916 |
|
|
* handler for WinSock ran before other exit handlers that want to
|
917 |
|
|
* use sockets.
|
918 |
|
|
*/
|
919 |
|
|
|
920 |
|
|
if (SocketsEnabled()) {
|
921 |
|
|
|
922 |
|
|
/*
|
923 |
|
|
* Clean up the OS socket handle. The default Windows setting
|
924 |
|
|
* for a socket is SO_DONTLINGER, which does a graceful shutdown
|
925 |
|
|
* in the background.
|
926 |
|
|
*/
|
927 |
|
|
|
928 |
|
|
if ((*winSock.closesocket)(infoPtr->socket) == SOCKET_ERROR) {
|
929 |
|
|
TclWinConvertWSAError((*winSock.WSAGetLastError)());
|
930 |
|
|
errorCode = Tcl_GetErrno();
|
931 |
|
|
}
|
932 |
|
|
}
|
933 |
|
|
|
934 |
|
|
/*
|
935 |
|
|
* Remove the socket from socketList.
|
936 |
|
|
*/
|
937 |
|
|
|
938 |
|
|
WaitForSingleObject(tsdPtr->socketListLock, INFINITE);
|
939 |
|
|
for (nextPtrPtr = &(tsdPtr->socketList); (*nextPtrPtr) != NULL;
|
940 |
|
|
nextPtrPtr = &((*nextPtrPtr)->nextPtr)) {
|
941 |
|
|
if ((*nextPtrPtr) == infoPtr) {
|
942 |
|
|
(*nextPtrPtr) = infoPtr->nextPtr;
|
943 |
|
|
break;
|
944 |
|
|
}
|
945 |
|
|
}
|
946 |
|
|
SetEvent(tsdPtr->socketListLock);
|
947 |
|
|
|
948 |
|
|
ckfree((char *) infoPtr);
|
949 |
|
|
return errorCode;
|
950 |
|
|
}
|
951 |
|
|
|
952 |
|
|
/*
|
953 |
|
|
*----------------------------------------------------------------------
|
954 |
|
|
*
|
955 |
|
|
* NewSocketInfo --
|
956 |
|
|
*
|
957 |
|
|
* This function allocates and initializes a new SocketInfo
|
958 |
|
|
* structure.
|
959 |
|
|
*
|
960 |
|
|
* Results:
|
961 |
|
|
* Returns a newly allocated SocketInfo.
|
962 |
|
|
*
|
963 |
|
|
* Side effects:
|
964 |
|
|
* Adds the socket to the global socket list.
|
965 |
|
|
*
|
966 |
|
|
*----------------------------------------------------------------------
|
967 |
|
|
*/
|
968 |
|
|
|
969 |
|
|
static SocketInfo *
|
970 |
|
|
NewSocketInfo(socket)
|
971 |
|
|
SOCKET socket;
|
972 |
|
|
{
|
973 |
|
|
SocketInfo *infoPtr;
|
974 |
|
|
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
|
975 |
|
|
|
976 |
|
|
infoPtr = (SocketInfo *) ckalloc((unsigned) sizeof(SocketInfo));
|
977 |
|
|
infoPtr->socket = socket;
|
978 |
|
|
infoPtr->flags = 0;
|
979 |
|
|
infoPtr->watchEvents = 0;
|
980 |
|
|
infoPtr->readyEvents = 0;
|
981 |
|
|
infoPtr->selectEvents = 0;
|
982 |
|
|
infoPtr->acceptEventCount = 0;
|
983 |
|
|
infoPtr->acceptProc = NULL;
|
984 |
|
|
infoPtr->lastError = 0;
|
985 |
|
|
|
986 |
|
|
WaitForSingleObject(tsdPtr->socketListLock, INFINITE);
|
987 |
|
|
infoPtr->nextPtr = tsdPtr->socketList;
|
988 |
|
|
tsdPtr->socketList = infoPtr;
|
989 |
|
|
SetEvent(tsdPtr->socketListLock);
|
990 |
|
|
|
991 |
|
|
return infoPtr;
|
992 |
|
|
}
|
993 |
|
|
|
994 |
|
|
/*
|
995 |
|
|
*----------------------------------------------------------------------
|
996 |
|
|
*
|
997 |
|
|
* CreateSocket --
|
998 |
|
|
*
|
999 |
|
|
* This function opens a new socket and initializes the
|
1000 |
|
|
* SocketInfo structure.
|
1001 |
|
|
*
|
1002 |
|
|
* Results:
|
1003 |
|
|
* Returns a new SocketInfo, or NULL with an error in interp.
|
1004 |
|
|
*
|
1005 |
|
|
* Side effects:
|
1006 |
|
|
* Adds a new socket to the socketList.
|
1007 |
|
|
*
|
1008 |
|
|
*----------------------------------------------------------------------
|
1009 |
|
|
*/
|
1010 |
|
|
|
1011 |
|
|
static SocketInfo *
|
1012 |
|
|
CreateSocket(interp, port, host, server, myaddr, myport, async)
|
1013 |
|
|
Tcl_Interp *interp; /* For error reporting; can be NULL. */
|
1014 |
|
|
int port; /* Port number to open. */
|
1015 |
|
|
char *host; /* Name of host on which to open port. */
|
1016 |
|
|
int server; /* 1 if socket should be a server socket,
|
1017 |
|
|
* else 0 for a client socket. */
|
1018 |
|
|
char *myaddr; /* Optional client-side address */
|
1019 |
|
|
int myport; /* Optional client-side port */
|
1020 |
|
|
int async; /* If nonzero, connect client socket
|
1021 |
|
|
* asynchronously. */
|
1022 |
|
|
{
|
1023 |
|
|
u_long flag = 1; /* Indicates nonblocking mode. */
|
1024 |
|
|
int asyncConnect = 0; /* Will be 1 if async connect is
|
1025 |
|
|
* in progress. */
|
1026 |
|
|
struct sockaddr_in sockaddr; /* Socket address */
|
1027 |
|
|
struct sockaddr_in mysockaddr; /* Socket address for client */
|
1028 |
|
|
SOCKET sock;
|
1029 |
|
|
SocketInfo *infoPtr; /* The returned value. */
|
1030 |
|
|
ThreadSpecificData *tsdPtr =
|
1031 |
|
|
(ThreadSpecificData *)TclThreadDataKeyGet(&dataKey);
|
1032 |
|
|
|
1033 |
|
|
/*
|
1034 |
|
|
* Check that WinSock is initialized; do not call it if not, to
|
1035 |
|
|
* prevent system crashes. This can happen at exit time if the exit
|
1036 |
|
|
* handler for WinSock ran before other exit handlers that want to
|
1037 |
|
|
* use sockets.
|
1038 |
|
|
*/
|
1039 |
|
|
|
1040 |
|
|
if (!SocketsEnabled()) {
|
1041 |
|
|
return NULL;
|
1042 |
|
|
}
|
1043 |
|
|
|
1044 |
|
|
if (! CreateSocketAddress(&sockaddr, host, port)) {
|
1045 |
|
|
goto error;
|
1046 |
|
|
}
|
1047 |
|
|
if ((myaddr != NULL || myport != 0) &&
|
1048 |
|
|
! CreateSocketAddress(&mysockaddr, myaddr, myport)) {
|
1049 |
|
|
goto error;
|
1050 |
|
|
}
|
1051 |
|
|
|
1052 |
|
|
sock = (*winSock.socket)(AF_INET, SOCK_STREAM, 0);
|
1053 |
|
|
if (sock == INVALID_SOCKET) {
|
1054 |
|
|
goto error;
|
1055 |
|
|
}
|
1056 |
|
|
|
1057 |
|
|
/*
|
1058 |
|
|
* Win-NT has a misfeature that sockets are inherited in child
|
1059 |
|
|
* processes by default. Turn off the inherit bit.
|
1060 |
|
|
*/
|
1061 |
|
|
|
1062 |
|
|
SetHandleInformation( (HANDLE) sock, HANDLE_FLAG_INHERIT, 0 );
|
1063 |
|
|
|
1064 |
|
|
/*
|
1065 |
|
|
* Set kernel space buffering
|
1066 |
|
|
*/
|
1067 |
|
|
|
1068 |
|
|
TclSockMinimumBuffers(sock, TCP_BUFFER_SIZE);
|
1069 |
|
|
|
1070 |
|
|
if (server) {
|
1071 |
|
|
/*
|
1072 |
|
|
* Bind to the specified port. Note that we must not call setsockopt
|
1073 |
|
|
* with SO_REUSEADDR because Microsoft allows addresses to be reused
|
1074 |
|
|
* even if they are still in use.
|
1075 |
|
|
*
|
1076 |
|
|
* Bind should not be affected by the socket having already been
|
1077 |
|
|
* set into nonblocking mode. If there is trouble, this is one place
|
1078 |
|
|
* to look for bugs.
|
1079 |
|
|
*/
|
1080 |
|
|
|
1081 |
|
|
if ((*winSock.bind)(sock, (struct sockaddr *) &sockaddr,
|
1082 |
|
|
sizeof(sockaddr)) == SOCKET_ERROR) {
|
1083 |
|
|
goto error;
|
1084 |
|
|
}
|
1085 |
|
|
|
1086 |
|
|
/*
|
1087 |
|
|
* Set the maximum number of pending connect requests to the
|
1088 |
|
|
* max value allowed on each platform (Win32 and Win32s may be
|
1089 |
|
|
* different, and there may be differences between TCP/IP stacks).
|
1090 |
|
|
*/
|
1091 |
|
|
|
1092 |
|
|
if ((*winSock.listen)(sock, SOMAXCONN) == SOCKET_ERROR) {
|
1093 |
|
|
goto error;
|
1094 |
|
|
}
|
1095 |
|
|
|
1096 |
|
|
/*
|
1097 |
|
|
* Add this socket to the global list of sockets.
|
1098 |
|
|
*/
|
1099 |
|
|
|
1100 |
|
|
infoPtr = NewSocketInfo(sock);
|
1101 |
|
|
|
1102 |
|
|
/*
|
1103 |
|
|
* Set up the select mask for connection request events.
|
1104 |
|
|
*/
|
1105 |
|
|
|
1106 |
|
|
infoPtr->selectEvents = FD_ACCEPT;
|
1107 |
|
|
infoPtr->watchEvents |= FD_ACCEPT;
|
1108 |
|
|
|
1109 |
|
|
} else {
|
1110 |
|
|
|
1111 |
|
|
/*
|
1112 |
|
|
* Try to bind to a local port, if specified.
|
1113 |
|
|
*/
|
1114 |
|
|
|
1115 |
|
|
if (myaddr != NULL || myport != 0) {
|
1116 |
|
|
if ((*winSock.bind)(sock, (struct sockaddr *) &mysockaddr,
|
1117 |
|
|
sizeof(struct sockaddr)) == SOCKET_ERROR) {
|
1118 |
|
|
goto error;
|
1119 |
|
|
}
|
1120 |
|
|
}
|
1121 |
|
|
|
1122 |
|
|
/*
|
1123 |
|
|
* Set the socket into nonblocking mode if the connect should be
|
1124 |
|
|
* done in the background.
|
1125 |
|
|
*/
|
1126 |
|
|
|
1127 |
|
|
if (async) {
|
1128 |
|
|
if ((*winSock.ioctlsocket)(sock, FIONBIO, &flag) == SOCKET_ERROR) {
|
1129 |
|
|
goto error;
|
1130 |
|
|
}
|
1131 |
|
|
}
|
1132 |
|
|
|
1133 |
|
|
/*
|
1134 |
|
|
* Attempt to connect to the remote socket.
|
1135 |
|
|
*/
|
1136 |
|
|
|
1137 |
|
|
if ((*winSock.connect)(sock, (struct sockaddr *) &sockaddr,
|
1138 |
|
|
sizeof(sockaddr)) == SOCKET_ERROR) {
|
1139 |
|
|
TclWinConvertWSAError((*winSock.WSAGetLastError)());
|
1140 |
|
|
if (Tcl_GetErrno() != EWOULDBLOCK) {
|
1141 |
|
|
goto error;
|
1142 |
|
|
}
|
1143 |
|
|
|
1144 |
|
|
/*
|
1145 |
|
|
* The connection is progressing in the background.
|
1146 |
|
|
*/
|
1147 |
|
|
|
1148 |
|
|
asyncConnect = 1;
|
1149 |
|
|
}
|
1150 |
|
|
|
1151 |
|
|
/*
|
1152 |
|
|
* Add this socket to the global list of sockets.
|
1153 |
|
|
*/
|
1154 |
|
|
|
1155 |
|
|
infoPtr = NewSocketInfo(sock);
|
1156 |
|
|
|
1157 |
|
|
/*
|
1158 |
|
|
* Set up the select mask for read/write events. If the connect
|
1159 |
|
|
* attempt has not completed, include connect events.
|
1160 |
|
|
*/
|
1161 |
|
|
|
1162 |
|
|
infoPtr->selectEvents = FD_READ | FD_WRITE | FD_CLOSE;
|
1163 |
|
|
if (asyncConnect) {
|
1164 |
|
|
infoPtr->flags |= SOCKET_ASYNC_CONNECT;
|
1165 |
|
|
infoPtr->selectEvents |= FD_CONNECT;
|
1166 |
|
|
}
|
1167 |
|
|
}
|
1168 |
|
|
|
1169 |
|
|
/*
|
1170 |
|
|
* Register for interest in events in the select mask. Note that this
|
1171 |
|
|
* automatically places the socket into non-blocking mode.
|
1172 |
|
|
*/
|
1173 |
|
|
|
1174 |
|
|
(*winSock.ioctlsocket)(sock, FIONBIO, &flag);
|
1175 |
|
|
SendMessage(tsdPtr->hwnd, SOCKET_SELECT,
|
1176 |
|
|
(WPARAM) SELECT, (LPARAM) infoPtr);
|
1177 |
|
|
|
1178 |
|
|
return infoPtr;
|
1179 |
|
|
|
1180 |
|
|
error:
|
1181 |
|
|
TclWinConvertWSAError((*winSock.WSAGetLastError)());
|
1182 |
|
|
if (interp != NULL) {
|
1183 |
|
|
Tcl_AppendResult(interp, "couldn't open socket: ",
|
1184 |
|
|
Tcl_PosixError(interp), (char *) NULL);
|
1185 |
|
|
}
|
1186 |
|
|
if (sock != INVALID_SOCKET) {
|
1187 |
|
|
(*winSock.closesocket)(sock);
|
1188 |
|
|
}
|
1189 |
|
|
return NULL;
|
1190 |
|
|
}
|
1191 |
|
|
|
1192 |
|
|
/*
|
1193 |
|
|
*----------------------------------------------------------------------
|
1194 |
|
|
*
|
1195 |
|
|
* CreateSocketAddress --
|
1196 |
|
|
*
|
1197 |
|
|
* This function initializes a sockaddr structure for a host and port.
|
1198 |
|
|
*
|
1199 |
|
|
* Results:
|
1200 |
|
|
* 1 if the host was valid, 0 if the host could not be converted to
|
1201 |
|
|
* an IP address.
|
1202 |
|
|
*
|
1203 |
|
|
* Side effects:
|
1204 |
|
|
* Fills in the *sockaddrPtr structure.
|
1205 |
|
|
*
|
1206 |
|
|
*----------------------------------------------------------------------
|
1207 |
|
|
*/
|
1208 |
|
|
|
1209 |
|
|
static int
|
1210 |
|
|
CreateSocketAddress(sockaddrPtr, host, port)
|
1211 |
|
|
struct sockaddr_in *sockaddrPtr; /* Socket address */
|
1212 |
|
|
char *host; /* Host. NULL implies INADDR_ANY */
|
1213 |
|
|
int port; /* Port number */
|
1214 |
|
|
{
|
1215 |
|
|
struct hostent *hostent; /* Host database entry */
|
1216 |
|
|
struct in_addr addr; /* For 64/32 bit madness */
|
1217 |
|
|
|
1218 |
|
|
/*
|
1219 |
|
|
* Check that WinSock is initialized; do not call it if not, to
|
1220 |
|
|
* prevent system crashes. This can happen at exit time if the exit
|
1221 |
|
|
* handler for WinSock ran before other exit handlers that want to
|
1222 |
|
|
* use sockets.
|
1223 |
|
|
*/
|
1224 |
|
|
|
1225 |
|
|
if (!SocketsEnabled()) {
|
1226 |
|
|
Tcl_SetErrno(EFAULT);
|
1227 |
|
|
return 0;
|
1228 |
|
|
}
|
1229 |
|
|
|
1230 |
|
|
(void) memset((char *) sockaddrPtr, '\0', sizeof(struct sockaddr_in));
|
1231 |
|
|
sockaddrPtr->sin_family = AF_INET;
|
1232 |
|
|
sockaddrPtr->sin_port = (*winSock.htons)((short) (port & 0xFFFF));
|
1233 |
|
|
if (host == NULL) {
|
1234 |
|
|
addr.s_addr = INADDR_ANY;
|
1235 |
|
|
} else {
|
1236 |
|
|
addr.s_addr = (*winSock.inet_addr)(host);
|
1237 |
|
|
if (addr.s_addr == INADDR_NONE) {
|
1238 |
|
|
hostent = (*winSock.gethostbyname)(host);
|
1239 |
|
|
if (hostent != NULL) {
|
1240 |
|
|
memcpy((char *) &addr,
|
1241 |
|
|
(char *) hostent->h_addr_list[0],
|
1242 |
|
|
(size_t) hostent->h_length);
|
1243 |
|
|
} else {
|
1244 |
|
|
#ifdef EHOSTUNREACH
|
1245 |
|
|
Tcl_SetErrno(EHOSTUNREACH);
|
1246 |
|
|
#else
|
1247 |
|
|
#ifdef ENXIO
|
1248 |
|
|
Tcl_SetErrno(ENXIO);
|
1249 |
|
|
#endif
|
1250 |
|
|
#endif
|
1251 |
|
|
return 0; /* Error. */
|
1252 |
|
|
}
|
1253 |
|
|
}
|
1254 |
|
|
}
|
1255 |
|
|
|
1256 |
|
|
/*
|
1257 |
|
|
* NOTE: On 64 bit machines the assignment below is rumored to not
|
1258 |
|
|
* do the right thing. Please report errors related to this if you
|
1259 |
|
|
* observe incorrect behavior on 64 bit machines such as DEC Alphas.
|
1260 |
|
|
* Should we modify this code to do an explicit memcpy?
|
1261 |
|
|
*/
|
1262 |
|
|
|
1263 |
|
|
sockaddrPtr->sin_addr.s_addr = addr.s_addr;
|
1264 |
|
|
return 1; /* Success. */
|
1265 |
|
|
}
|
1266 |
|
|
|
1267 |
|
|
/*
|
1268 |
|
|
*----------------------------------------------------------------------
|
1269 |
|
|
*
|
1270 |
|
|
* WaitForSocketEvent --
|
1271 |
|
|
*
|
1272 |
|
|
* Waits until one of the specified events occurs on a socket.
|
1273 |
|
|
*
|
1274 |
|
|
* Results:
|
1275 |
|
|
* Returns 1 on success or 0 on failure, with an error code in
|
1276 |
|
|
* errorCodePtr.
|
1277 |
|
|
*
|
1278 |
|
|
* Side effects:
|
1279 |
|
|
* Processes socket events off the system queue.
|
1280 |
|
|
*
|
1281 |
|
|
*----------------------------------------------------------------------
|
1282 |
|
|
*/
|
1283 |
|
|
|
1284 |
|
|
static int
|
1285 |
|
|
WaitForSocketEvent(infoPtr, events, errorCodePtr)
|
1286 |
|
|
SocketInfo *infoPtr; /* Information about this socket. */
|
1287 |
|
|
int events; /* Events to look for. */
|
1288 |
|
|
int *errorCodePtr; /* Where to store errors? */
|
1289 |
|
|
{
|
1290 |
|
|
int result = 1;
|
1291 |
|
|
int oldMode;
|
1292 |
|
|
ThreadSpecificData *tsdPtr =
|
1293 |
|
|
(ThreadSpecificData *)TclThreadDataKeyGet(&dataKey);
|
1294 |
|
|
|
1295 |
|
|
/*
|
1296 |
|
|
* Be sure to disable event servicing so we are truly modal.
|
1297 |
|
|
*/
|
1298 |
|
|
|
1299 |
|
|
oldMode = Tcl_SetServiceMode(TCL_SERVICE_NONE);
|
1300 |
|
|
|
1301 |
|
|
/*
|
1302 |
|
|
* Reset WSAAsyncSelect so we have a fresh set of events pending.
|
1303 |
|
|
*/
|
1304 |
|
|
|
1305 |
|
|
SendMessage(tsdPtr->hwnd, SOCKET_SELECT,
|
1306 |
|
|
(WPARAM) UNSELECT, (LPARAM) infoPtr);
|
1307 |
|
|
|
1308 |
|
|
SendMessage(tsdPtr->hwnd, SOCKET_SELECT,
|
1309 |
|
|
(WPARAM) SELECT, (LPARAM) infoPtr);
|
1310 |
|
|
|
1311 |
|
|
while (1) {
|
1312 |
|
|
|
1313 |
|
|
if (infoPtr->lastError) {
|
1314 |
|
|
*errorCodePtr = infoPtr->lastError;
|
1315 |
|
|
result = 0;
|
1316 |
|
|
break;
|
1317 |
|
|
} else if (infoPtr->readyEvents & events) {
|
1318 |
|
|
break;
|
1319 |
|
|
} else if (infoPtr->flags & SOCKET_ASYNC) {
|
1320 |
|
|
*errorCodePtr = EWOULDBLOCK;
|
1321 |
|
|
result = 0;
|
1322 |
|
|
break;
|
1323 |
|
|
}
|
1324 |
|
|
|
1325 |
|
|
/*
|
1326 |
|
|
* Wait until something happens.
|
1327 |
|
|
*/
|
1328 |
|
|
WaitForSingleObject(tsdPtr->readyEvent, INFINITE);
|
1329 |
|
|
}
|
1330 |
|
|
|
1331 |
|
|
(void) Tcl_SetServiceMode(oldMode);
|
1332 |
|
|
return result;
|
1333 |
|
|
}
|
1334 |
|
|
|
1335 |
|
|
/*
|
1336 |
|
|
*----------------------------------------------------------------------
|
1337 |
|
|
*
|
1338 |
|
|
* Tcl_OpenTcpClient --
|
1339 |
|
|
*
|
1340 |
|
|
* Opens a TCP client socket and creates a channel around it.
|
1341 |
|
|
*
|
1342 |
|
|
* Results:
|
1343 |
|
|
* The channel or NULL if failed. An error message is returned
|
1344 |
|
|
* in the interpreter on failure.
|
1345 |
|
|
*
|
1346 |
|
|
* Side effects:
|
1347 |
|
|
* Opens a client socket and creates a new channel.
|
1348 |
|
|
*
|
1349 |
|
|
*----------------------------------------------------------------------
|
1350 |
|
|
*/
|
1351 |
|
|
|
1352 |
|
|
Tcl_Channel
|
1353 |
|
|
Tcl_OpenTcpClient(interp, port, host, myaddr, myport, async)
|
1354 |
|
|
Tcl_Interp *interp; /* For error reporting; can be NULL. */
|
1355 |
|
|
int port; /* Port number to open. */
|
1356 |
|
|
char *host; /* Host on which to open port. */
|
1357 |
|
|
char *myaddr; /* Client-side address */
|
1358 |
|
|
int myport; /* Client-side port */
|
1359 |
|
|
int async; /* If nonzero, should connect
|
1360 |
|
|
* client socket asynchronously. */
|
1361 |
|
|
{
|
1362 |
|
|
SocketInfo *infoPtr;
|
1363 |
|
|
char channelName[16 + TCL_INTEGER_SPACE];
|
1364 |
|
|
|
1365 |
|
|
if (TclpHasSockets(interp) != TCL_OK) {
|
1366 |
|
|
return NULL;
|
1367 |
|
|
}
|
1368 |
|
|
|
1369 |
|
|
/*
|
1370 |
|
|
* Create a new client socket and wrap it in a channel.
|
1371 |
|
|
*/
|
1372 |
|
|
|
1373 |
|
|
infoPtr = CreateSocket(interp, port, host, 0, myaddr, myport, async);
|
1374 |
|
|
if (infoPtr == NULL) {
|
1375 |
|
|
return NULL;
|
1376 |
|
|
}
|
1377 |
|
|
|
1378 |
|
|
wsprintfA(channelName, "sock%d", infoPtr->socket);
|
1379 |
|
|
|
1380 |
|
|
infoPtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName,
|
1381 |
|
|
(ClientData) infoPtr, (TCL_READABLE | TCL_WRITABLE));
|
1382 |
|
|
if (Tcl_SetChannelOption(interp, infoPtr->channel, "-translation",
|
1383 |
|
|
"auto crlf") == TCL_ERROR) {
|
1384 |
|
|
Tcl_Close((Tcl_Interp *) NULL, infoPtr->channel);
|
1385 |
|
|
return (Tcl_Channel) NULL;
|
1386 |
|
|
}
|
1387 |
|
|
if (Tcl_SetChannelOption(NULL, infoPtr->channel, "-eofchar", "")
|
1388 |
|
|
== TCL_ERROR) {
|
1389 |
|
|
Tcl_Close((Tcl_Interp *) NULL, infoPtr->channel);
|
1390 |
|
|
return (Tcl_Channel) NULL;
|
1391 |
|
|
}
|
1392 |
|
|
return infoPtr->channel;
|
1393 |
|
|
}
|
1394 |
|
|
|
1395 |
|
|
/*
|
1396 |
|
|
*----------------------------------------------------------------------
|
1397 |
|
|
*
|
1398 |
|
|
* Tcl_MakeTcpClientChannel --
|
1399 |
|
|
*
|
1400 |
|
|
* Creates a Tcl_Channel from an existing client TCP socket.
|
1401 |
|
|
*
|
1402 |
|
|
* Results:
|
1403 |
|
|
* The Tcl_Channel wrapped around the preexisting TCP socket.
|
1404 |
|
|
*
|
1405 |
|
|
* Side effects:
|
1406 |
|
|
* None.
|
1407 |
|
|
*
|
1408 |
|
|
* NOTE: Code contributed by Mark Diekhans (markd@grizzly.com)
|
1409 |
|
|
*
|
1410 |
|
|
*----------------------------------------------------------------------
|
1411 |
|
|
*/
|
1412 |
|
|
|
1413 |
|
|
Tcl_Channel
|
1414 |
|
|
Tcl_MakeTcpClientChannel(sock)
|
1415 |
|
|
ClientData sock; /* The socket to wrap up into a channel. */
|
1416 |
|
|
{
|
1417 |
|
|
SocketInfo *infoPtr;
|
1418 |
|
|
char channelName[16 + TCL_INTEGER_SPACE];
|
1419 |
|
|
ThreadSpecificData *tsdPtr;
|
1420 |
|
|
|
1421 |
|
|
if (TclpHasSockets(NULL) != TCL_OK) {
|
1422 |
|
|
return NULL;
|
1423 |
|
|
}
|
1424 |
|
|
|
1425 |
|
|
tsdPtr = (ThreadSpecificData *)TclThreadDataKeyGet(&dataKey);
|
1426 |
|
|
|
1427 |
|
|
/*
|
1428 |
|
|
* Set kernel space buffering and non-blocking.
|
1429 |
|
|
*/
|
1430 |
|
|
|
1431 |
|
|
TclSockMinimumBuffers((SOCKET) sock, TCP_BUFFER_SIZE);
|
1432 |
|
|
|
1433 |
|
|
infoPtr = NewSocketInfo((SOCKET) sock);
|
1434 |
|
|
|
1435 |
|
|
/*
|
1436 |
|
|
* Start watching for read/write events on the socket.
|
1437 |
|
|
*/
|
1438 |
|
|
|
1439 |
|
|
infoPtr->selectEvents = FD_READ | FD_CLOSE | FD_WRITE;
|
1440 |
|
|
SendMessage(tsdPtr->hwnd, SOCKET_SELECT,
|
1441 |
|
|
(WPARAM) SELECT, (LPARAM) infoPtr);
|
1442 |
|
|
|
1443 |
|
|
wsprintfA(channelName, "sock%d", infoPtr->socket);
|
1444 |
|
|
infoPtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName,
|
1445 |
|
|
(ClientData) infoPtr, (TCL_READABLE | TCL_WRITABLE));
|
1446 |
|
|
Tcl_SetChannelOption(NULL, infoPtr->channel, "-translation", "auto crlf");
|
1447 |
|
|
return infoPtr->channel;
|
1448 |
|
|
}
|
1449 |
|
|
|
1450 |
|
|
/*
|
1451 |
|
|
*----------------------------------------------------------------------
|
1452 |
|
|
*
|
1453 |
|
|
* Tcl_OpenTcpServer --
|
1454 |
|
|
*
|
1455 |
|
|
* Opens a TCP server socket and creates a channel around it.
|
1456 |
|
|
*
|
1457 |
|
|
* Results:
|
1458 |
|
|
* The channel or NULL if failed. An error message is returned
|
1459 |
|
|
* in the interpreter on failure.
|
1460 |
|
|
*
|
1461 |
|
|
* Side effects:
|
1462 |
|
|
* Opens a server socket and creates a new channel.
|
1463 |
|
|
*
|
1464 |
|
|
*----------------------------------------------------------------------
|
1465 |
|
|
*/
|
1466 |
|
|
|
1467 |
|
|
Tcl_Channel
|
1468 |
|
|
Tcl_OpenTcpServer(interp, port, host, acceptProc, acceptProcData)
|
1469 |
|
|
Tcl_Interp *interp; /* For error reporting - may be
|
1470 |
|
|
* NULL. */
|
1471 |
|
|
int port; /* Port number to open. */
|
1472 |
|
|
char *host; /* Name of local host. */
|
1473 |
|
|
Tcl_TcpAcceptProc *acceptProc; /* Callback for accepting connections
|
1474 |
|
|
* from new clients. */
|
1475 |
|
|
ClientData acceptProcData; /* Data for the callback. */
|
1476 |
|
|
{
|
1477 |
|
|
SocketInfo *infoPtr;
|
1478 |
|
|
char channelName[16 + TCL_INTEGER_SPACE];
|
1479 |
|
|
|
1480 |
|
|
if (TclpHasSockets(interp) != TCL_OK) {
|
1481 |
|
|
return NULL;
|
1482 |
|
|
}
|
1483 |
|
|
|
1484 |
|
|
/*
|
1485 |
|
|
* Create a new client socket and wrap it in a channel.
|
1486 |
|
|
*/
|
1487 |
|
|
|
1488 |
|
|
infoPtr = CreateSocket(interp, port, host, 1, NULL, 0, 0);
|
1489 |
|
|
if (infoPtr == NULL) {
|
1490 |
|
|
return NULL;
|
1491 |
|
|
}
|
1492 |
|
|
|
1493 |
|
|
infoPtr->acceptProc = acceptProc;
|
1494 |
|
|
infoPtr->acceptProcData = acceptProcData;
|
1495 |
|
|
|
1496 |
|
|
wsprintfA(channelName, "sock%d", infoPtr->socket);
|
1497 |
|
|
|
1498 |
|
|
infoPtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName,
|
1499 |
|
|
(ClientData) infoPtr, 0);
|
1500 |
|
|
if (Tcl_SetChannelOption(interp, infoPtr->channel, "-eofchar", "")
|
1501 |
|
|
== TCL_ERROR) {
|
1502 |
|
|
Tcl_Close((Tcl_Interp *) NULL, infoPtr->channel);
|
1503 |
|
|
return (Tcl_Channel) NULL;
|
1504 |
|
|
}
|
1505 |
|
|
|
1506 |
|
|
return infoPtr->channel;
|
1507 |
|
|
}
|
1508 |
|
|
|
1509 |
|
|
/*
|
1510 |
|
|
*----------------------------------------------------------------------
|
1511 |
|
|
*
|
1512 |
|
|
* TcpAccept --
|
1513 |
|
|
* Accept a TCP socket connection. This is called by
|
1514 |
|
|
* SocketEventProc and it in turns calls the registered accept
|
1515 |
|
|
* procedure.
|
1516 |
|
|
*
|
1517 |
|
|
* Results:
|
1518 |
|
|
* None.
|
1519 |
|
|
*
|
1520 |
|
|
* Side effects:
|
1521 |
|
|
* Invokes the accept proc which may invoke arbitrary Tcl code.
|
1522 |
|
|
*
|
1523 |
|
|
*----------------------------------------------------------------------
|
1524 |
|
|
*/
|
1525 |
|
|
|
1526 |
|
|
static void
|
1527 |
|
|
TcpAccept(infoPtr)
|
1528 |
|
|
SocketInfo *infoPtr; /* Socket to accept. */
|
1529 |
|
|
{
|
1530 |
|
|
SOCKET newSocket;
|
1531 |
|
|
SocketInfo *newInfoPtr;
|
1532 |
|
|
struct sockaddr_in addr;
|
1533 |
|
|
int len;
|
1534 |
|
|
char channelName[16 + TCL_INTEGER_SPACE];
|
1535 |
|
|
ThreadSpecificData *tsdPtr =
|
1536 |
|
|
(ThreadSpecificData *)TclThreadDataKeyGet(&dataKey);
|
1537 |
|
|
|
1538 |
|
|
/*
|
1539 |
|
|
* Accept the incoming connection request.
|
1540 |
|
|
*/
|
1541 |
|
|
|
1542 |
|
|
len = sizeof(struct sockaddr_in);
|
1543 |
|
|
|
1544 |
|
|
newSocket = (*winSock.accept)(infoPtr->socket,
|
1545 |
|
|
(struct sockaddr *)&addr,
|
1546 |
|
|
&len);
|
1547 |
|
|
|
1548 |
|
|
/*
|
1549 |
|
|
* Clear the ready mask so we can detect the next connection request.
|
1550 |
|
|
* Note that connection requests are level triggered, so if there is
|
1551 |
|
|
* a request already pending, a new event will be generated.
|
1552 |
|
|
*/
|
1553 |
|
|
|
1554 |
|
|
if (newSocket == INVALID_SOCKET) {
|
1555 |
|
|
infoPtr->acceptEventCount = 0;
|
1556 |
|
|
infoPtr->readyEvents &= ~(FD_ACCEPT);
|
1557 |
|
|
return;
|
1558 |
|
|
}
|
1559 |
|
|
|
1560 |
|
|
/*
|
1561 |
|
|
* It is possible that more than one FD_ACCEPT has been sent, so an extra
|
1562 |
|
|
* count must be kept. Decrement the count, and reset the readyEvent bit
|
1563 |
|
|
* if the count is no longer > 0.
|
1564 |
|
|
*/
|
1565 |
|
|
|
1566 |
|
|
infoPtr->acceptEventCount--;
|
1567 |
|
|
|
1568 |
|
|
if (infoPtr->acceptEventCount <= 0) {
|
1569 |
|
|
infoPtr->readyEvents &= ~(FD_ACCEPT);
|
1570 |
|
|
}
|
1571 |
|
|
|
1572 |
|
|
/*
|
1573 |
|
|
* Win-NT has a misfeature that sockets are inherited in child
|
1574 |
|
|
* processes by default. Turn off the inherit bit.
|
1575 |
|
|
*/
|
1576 |
|
|
|
1577 |
|
|
SetHandleInformation( (HANDLE) newSocket, HANDLE_FLAG_INHERIT, 0 );
|
1578 |
|
|
|
1579 |
|
|
/*
|
1580 |
|
|
* Add this socket to the global list of sockets.
|
1581 |
|
|
*/
|
1582 |
|
|
|
1583 |
|
|
newInfoPtr = NewSocketInfo(newSocket);
|
1584 |
|
|
|
1585 |
|
|
/*
|
1586 |
|
|
* Select on read/write events and create the channel.
|
1587 |
|
|
*/
|
1588 |
|
|
|
1589 |
|
|
newInfoPtr->selectEvents = (FD_READ | FD_WRITE | FD_CLOSE);
|
1590 |
|
|
SendMessage(tsdPtr->hwnd, SOCKET_SELECT,
|
1591 |
|
|
(WPARAM) SELECT, (LPARAM) newInfoPtr);
|
1592 |
|
|
|
1593 |
|
|
wsprintfA(channelName, "sock%d", newInfoPtr->socket);
|
1594 |
|
|
newInfoPtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName,
|
1595 |
|
|
(ClientData) newInfoPtr, (TCL_READABLE | TCL_WRITABLE));
|
1596 |
|
|
if (Tcl_SetChannelOption(NULL, newInfoPtr->channel, "-translation",
|
1597 |
|
|
"auto crlf") == TCL_ERROR) {
|
1598 |
|
|
Tcl_Close((Tcl_Interp *) NULL, newInfoPtr->channel);
|
1599 |
|
|
return;
|
1600 |
|
|
}
|
1601 |
|
|
if (Tcl_SetChannelOption(NULL, newInfoPtr->channel, "-eofchar", "")
|
1602 |
|
|
== TCL_ERROR) {
|
1603 |
|
|
Tcl_Close((Tcl_Interp *) NULL, newInfoPtr->channel);
|
1604 |
|
|
return;
|
1605 |
|
|
}
|
1606 |
|
|
|
1607 |
|
|
/*
|
1608 |
|
|
* Invoke the accept callback procedure.
|
1609 |
|
|
*/
|
1610 |
|
|
|
1611 |
|
|
if (infoPtr->acceptProc != NULL) {
|
1612 |
|
|
(infoPtr->acceptProc) (infoPtr->acceptProcData,
|
1613 |
|
|
newInfoPtr->channel,
|
1614 |
|
|
(*winSock.inet_ntoa)(addr.sin_addr),
|
1615 |
|
|
(*winSock.ntohs)(addr.sin_port));
|
1616 |
|
|
}
|
1617 |
|
|
}
|
1618 |
|
|
|
1619 |
|
|
/*
|
1620 |
|
|
*----------------------------------------------------------------------
|
1621 |
|
|
*
|
1622 |
|
|
* TcpInputProc --
|
1623 |
|
|
*
|
1624 |
|
|
* This procedure is called by the generic IO level to read data from
|
1625 |
|
|
* a socket based channel.
|
1626 |
|
|
*
|
1627 |
|
|
* Results:
|
1628 |
|
|
* The number of bytes read or -1 on error.
|
1629 |
|
|
*
|
1630 |
|
|
* Side effects:
|
1631 |
|
|
* Consumes input from the socket.
|
1632 |
|
|
*
|
1633 |
|
|
*----------------------------------------------------------------------
|
1634 |
|
|
*/
|
1635 |
|
|
|
1636 |
|
|
static int
|
1637 |
|
|
TcpInputProc(instanceData, buf, toRead, errorCodePtr)
|
1638 |
|
|
ClientData instanceData; /* The socket state. */
|
1639 |
|
|
char *buf; /* Where to store data. */
|
1640 |
|
|
int toRead; /* Maximum number of bytes to read. */
|
1641 |
|
|
int *errorCodePtr; /* Where to store error codes. */
|
1642 |
|
|
{
|
1643 |
|
|
SocketInfo *infoPtr = (SocketInfo *) instanceData;
|
1644 |
|
|
int bytesRead;
|
1645 |
|
|
int error;
|
1646 |
|
|
ThreadSpecificData *tsdPtr =
|
1647 |
|
|
(ThreadSpecificData *)TclThreadDataKeyGet(&dataKey);
|
1648 |
|
|
|
1649 |
|
|
*errorCodePtr = 0;
|
1650 |
|
|
|
1651 |
|
|
/*
|
1652 |
|
|
* Check that WinSock is initialized; do not call it if not, to
|
1653 |
|
|
* prevent system crashes. This can happen at exit time if the exit
|
1654 |
|
|
* handler for WinSock ran before other exit handlers that want to
|
1655 |
|
|
* use sockets.
|
1656 |
|
|
*/
|
1657 |
|
|
|
1658 |
|
|
if (!SocketsEnabled()) {
|
1659 |
|
|
*errorCodePtr = EFAULT;
|
1660 |
|
|
return -1;
|
1661 |
|
|
}
|
1662 |
|
|
|
1663 |
|
|
/*
|
1664 |
|
|
* First check to see if EOF was already detected, to prevent
|
1665 |
|
|
* calling the socket stack after the first time EOF is detected.
|
1666 |
|
|
*/
|
1667 |
|
|
|
1668 |
|
|
if (infoPtr->flags & SOCKET_EOF) {
|
1669 |
|
|
return 0;
|
1670 |
|
|
}
|
1671 |
|
|
|
1672 |
|
|
/*
|
1673 |
|
|
* Check to see if the socket is connected before trying to read.
|
1674 |
|
|
*/
|
1675 |
|
|
|
1676 |
|
|
if ((infoPtr->flags & SOCKET_ASYNC_CONNECT)
|
1677 |
|
|
&& ! WaitForSocketEvent(infoPtr, FD_CONNECT, errorCodePtr)) {
|
1678 |
|
|
return -1;
|
1679 |
|
|
}
|
1680 |
|
|
|
1681 |
|
|
/*
|
1682 |
|
|
* No EOF, and it is connected, so try to read more from the socket.
|
1683 |
|
|
* Note that we clear the FD_READ bit because read events are level
|
1684 |
|
|
* triggered so a new event will be generated if there is still data
|
1685 |
|
|
* available to be read. We have to simulate blocking behavior here
|
1686 |
|
|
* since we are always using non-blocking sockets.
|
1687 |
|
|
*/
|
1688 |
|
|
|
1689 |
|
|
while (1) {
|
1690 |
|
|
SendMessage(tsdPtr->hwnd, SOCKET_SELECT,
|
1691 |
|
|
(WPARAM) UNSELECT, (LPARAM) infoPtr);
|
1692 |
|
|
bytesRead = (*winSock.recv)(infoPtr->socket, buf, toRead, 0);
|
1693 |
|
|
infoPtr->readyEvents &= ~(FD_READ);
|
1694 |
|
|
|
1695 |
|
|
/*
|
1696 |
|
|
* Check for end-of-file condition or successful read.
|
1697 |
|
|
*/
|
1698 |
|
|
|
1699 |
|
|
if (bytesRead == 0) {
|
1700 |
|
|
infoPtr->flags |= SOCKET_EOF;
|
1701 |
|
|
}
|
1702 |
|
|
if (bytesRead != SOCKET_ERROR) {
|
1703 |
|
|
break;
|
1704 |
|
|
}
|
1705 |
|
|
|
1706 |
|
|
/*
|
1707 |
|
|
* If an error occurs after the FD_CLOSE has arrived,
|
1708 |
|
|
* then ignore the error and report an EOF.
|
1709 |
|
|
*/
|
1710 |
|
|
|
1711 |
|
|
if (infoPtr->readyEvents & FD_CLOSE) {
|
1712 |
|
|
infoPtr->flags |= SOCKET_EOF;
|
1713 |
|
|
bytesRead = 0;
|
1714 |
|
|
break;
|
1715 |
|
|
}
|
1716 |
|
|
|
1717 |
|
|
/*
|
1718 |
|
|
* Check for error condition or underflow in non-blocking case.
|
1719 |
|
|
*/
|
1720 |
|
|
|
1721 |
|
|
error = (*winSock.WSAGetLastError)();
|
1722 |
|
|
if ((infoPtr->flags & SOCKET_ASYNC) || (error != WSAEWOULDBLOCK)) {
|
1723 |
|
|
TclWinConvertWSAError(error);
|
1724 |
|
|
*errorCodePtr = Tcl_GetErrno();
|
1725 |
|
|
bytesRead = -1;
|
1726 |
|
|
break;
|
1727 |
|
|
}
|
1728 |
|
|
|
1729 |
|
|
/*
|
1730 |
|
|
* In the blocking case, wait until the file becomes readable
|
1731 |
|
|
* or closed and try again.
|
1732 |
|
|
*/
|
1733 |
|
|
|
1734 |
|
|
if (!WaitForSocketEvent(infoPtr, FD_READ|FD_CLOSE, errorCodePtr)) {
|
1735 |
|
|
bytesRead = -1;
|
1736 |
|
|
break;
|
1737 |
|
|
}
|
1738 |
|
|
}
|
1739 |
|
|
|
1740 |
|
|
SendMessage(tsdPtr->hwnd, SOCKET_SELECT,
|
1741 |
|
|
(WPARAM) SELECT, (LPARAM) infoPtr);
|
1742 |
|
|
|
1743 |
|
|
return bytesRead;
|
1744 |
|
|
}
|
1745 |
|
|
|
1746 |
|
|
/*
|
1747 |
|
|
*----------------------------------------------------------------------
|
1748 |
|
|
*
|
1749 |
|
|
* TcpOutputProc --
|
1750 |
|
|
*
|
1751 |
|
|
* This procedure is called by the generic IO level to write data
|
1752 |
|
|
* to a socket based channel.
|
1753 |
|
|
*
|
1754 |
|
|
* Results:
|
1755 |
|
|
* The number of bytes written or -1 on failure.
|
1756 |
|
|
*
|
1757 |
|
|
* Side effects:
|
1758 |
|
|
* Produces output on the socket.
|
1759 |
|
|
*
|
1760 |
|
|
*----------------------------------------------------------------------
|
1761 |
|
|
*/
|
1762 |
|
|
|
1763 |
|
|
static int
|
1764 |
|
|
TcpOutputProc(instanceData, buf, toWrite, errorCodePtr)
|
1765 |
|
|
ClientData instanceData; /* The socket state. */
|
1766 |
|
|
char *buf; /* Where to get data. */
|
1767 |
|
|
int toWrite; /* Maximum number of bytes to write. */
|
1768 |
|
|
int *errorCodePtr; /* Where to store error codes. */
|
1769 |
|
|
{
|
1770 |
|
|
SocketInfo *infoPtr = (SocketInfo *) instanceData;
|
1771 |
|
|
int bytesWritten;
|
1772 |
|
|
int error;
|
1773 |
|
|
ThreadSpecificData *tsdPtr =
|
1774 |
|
|
(ThreadSpecificData *)TclThreadDataKeyGet(&dataKey);
|
1775 |
|
|
|
1776 |
|
|
*errorCodePtr = 0;
|
1777 |
|
|
|
1778 |
|
|
/*
|
1779 |
|
|
* Check that WinSock is initialized; do not call it if not, to
|
1780 |
|
|
* prevent system crashes. This can happen at exit time if the exit
|
1781 |
|
|
* handler for WinSock ran before other exit handlers that want to
|
1782 |
|
|
* use sockets.
|
1783 |
|
|
*/
|
1784 |
|
|
|
1785 |
|
|
if (!SocketsEnabled()) {
|
1786 |
|
|
*errorCodePtr = EFAULT;
|
1787 |
|
|
return -1;
|
1788 |
|
|
}
|
1789 |
|
|
|
1790 |
|
|
/*
|
1791 |
|
|
* Check to see if the socket is connected before trying to write.
|
1792 |
|
|
*/
|
1793 |
|
|
|
1794 |
|
|
if ((infoPtr->flags & SOCKET_ASYNC_CONNECT)
|
1795 |
|
|
&& ! WaitForSocketEvent(infoPtr, FD_CONNECT, errorCodePtr)) {
|
1796 |
|
|
return -1;
|
1797 |
|
|
}
|
1798 |
|
|
|
1799 |
|
|
while (1) {
|
1800 |
|
|
SendMessage(tsdPtr->hwnd, SOCKET_SELECT,
|
1801 |
|
|
(WPARAM) UNSELECT, (LPARAM) infoPtr);
|
1802 |
|
|
|
1803 |
|
|
bytesWritten = (*winSock.send)(infoPtr->socket, buf, toWrite, 0);
|
1804 |
|
|
if (bytesWritten != SOCKET_ERROR) {
|
1805 |
|
|
/*
|
1806 |
|
|
* Since Windows won't generate a new write event until we hit
|
1807 |
|
|
* an overflow condition, we need to force the event loop to
|
1808 |
|
|
* poll until the condition changes.
|
1809 |
|
|
*/
|
1810 |
|
|
|
1811 |
|
|
if (infoPtr->watchEvents & FD_WRITE) {
|
1812 |
|
|
Tcl_Time blockTime = { 0, 0 };
|
1813 |
|
|
Tcl_SetMaxBlockTime(&blockTime);
|
1814 |
|
|
}
|
1815 |
|
|
break;
|
1816 |
|
|
}
|
1817 |
|
|
|
1818 |
|
|
/*
|
1819 |
|
|
* Check for error condition or overflow. In the event of overflow, we
|
1820 |
|
|
* need to clear the FD_WRITE flag so we can detect the next writable
|
1821 |
|
|
* event. Note that Windows only sends a new writable event after a
|
1822 |
|
|
* send fails with WSAEWOULDBLOCK.
|
1823 |
|
|
*/
|
1824 |
|
|
|
1825 |
|
|
error = (*winSock.WSAGetLastError)();
|
1826 |
|
|
if (error == WSAEWOULDBLOCK) {
|
1827 |
|
|
infoPtr->readyEvents &= ~(FD_WRITE);
|
1828 |
|
|
if (infoPtr->flags & SOCKET_ASYNC) {
|
1829 |
|
|
*errorCodePtr = EWOULDBLOCK;
|
1830 |
|
|
bytesWritten = -1;
|
1831 |
|
|
break;
|
1832 |
|
|
}
|
1833 |
|
|
} else {
|
1834 |
|
|
TclWinConvertWSAError(error);
|
1835 |
|
|
*errorCodePtr = Tcl_GetErrno();
|
1836 |
|
|
bytesWritten = -1;
|
1837 |
|
|
break;
|
1838 |
|
|
}
|
1839 |
|
|
|
1840 |
|
|
/*
|
1841 |
|
|
* In the blocking case, wait until the file becomes writable
|
1842 |
|
|
* or closed and try again.
|
1843 |
|
|
*/
|
1844 |
|
|
|
1845 |
|
|
if (!WaitForSocketEvent(infoPtr, FD_WRITE|FD_CLOSE, errorCodePtr)) {
|
1846 |
|
|
bytesWritten = -1;
|
1847 |
|
|
break;
|
1848 |
|
|
}
|
1849 |
|
|
}
|
1850 |
|
|
|
1851 |
|
|
SendMessage(tsdPtr->hwnd, SOCKET_SELECT,
|
1852 |
|
|
(WPARAM) SELECT, (LPARAM) infoPtr);
|
1853 |
|
|
|
1854 |
|
|
return bytesWritten;
|
1855 |
|
|
}
|
1856 |
|
|
|
1857 |
|
|
/*
|
1858 |
|
|
*----------------------------------------------------------------------
|
1859 |
|
|
*
|
1860 |
|
|
* TcpGetOptionProc --
|
1861 |
|
|
*
|
1862 |
|
|
* Computes an option value for a TCP socket based channel, or a
|
1863 |
|
|
* list of all options and their values.
|
1864 |
|
|
*
|
1865 |
|
|
* Note: This code is based on code contributed by John Haxby.
|
1866 |
|
|
*
|
1867 |
|
|
* Results:
|
1868 |
|
|
* A standard Tcl result. The value of the specified option or a
|
1869 |
|
|
* list of all options and their values is returned in the
|
1870 |
|
|
* supplied DString.
|
1871 |
|
|
*
|
1872 |
|
|
* Side effects:
|
1873 |
|
|
* None.
|
1874 |
|
|
*
|
1875 |
|
|
*----------------------------------------------------------------------
|
1876 |
|
|
*/
|
1877 |
|
|
|
1878 |
|
|
static int
|
1879 |
|
|
TcpGetOptionProc(instanceData, interp, optionName, dsPtr)
|
1880 |
|
|
ClientData instanceData; /* Socket state. */
|
1881 |
|
|
Tcl_Interp *interp; /* For error reporting - can be NULL */
|
1882 |
|
|
char *optionName; /* Name of the option to
|
1883 |
|
|
* retrieve the value for, or
|
1884 |
|
|
* NULL to get all options and
|
1885 |
|
|
* their values. */
|
1886 |
|
|
Tcl_DString *dsPtr; /* Where to store the computed
|
1887 |
|
|
* value; initialized by caller. */
|
1888 |
|
|
{
|
1889 |
|
|
SocketInfo *infoPtr;
|
1890 |
|
|
struct sockaddr_in sockname;
|
1891 |
|
|
struct sockaddr_in peername;
|
1892 |
|
|
struct hostent *hostEntPtr;
|
1893 |
|
|
SOCKET sock;
|
1894 |
|
|
int size = sizeof(struct sockaddr_in);
|
1895 |
|
|
size_t len = 0;
|
1896 |
|
|
char buf[TCL_INTEGER_SPACE];
|
1897 |
|
|
|
1898 |
|
|
/*
|
1899 |
|
|
* Check that WinSock is initialized; do not call it if not, to
|
1900 |
|
|
* prevent system crashes. This can happen at exit time if the exit
|
1901 |
|
|
* handler for WinSock ran before other exit handlers that want to
|
1902 |
|
|
* use sockets.
|
1903 |
|
|
*/
|
1904 |
|
|
|
1905 |
|
|
if (!SocketsEnabled()) {
|
1906 |
|
|
if (interp) {
|
1907 |
|
|
Tcl_AppendResult(interp, "winsock is not initialized", NULL);
|
1908 |
|
|
}
|
1909 |
|
|
return TCL_ERROR;
|
1910 |
|
|
}
|
1911 |
|
|
|
1912 |
|
|
infoPtr = (SocketInfo *) instanceData;
|
1913 |
|
|
sock = (int) infoPtr->socket;
|
1914 |
|
|
if (optionName != (char *) NULL) {
|
1915 |
|
|
len = strlen(optionName);
|
1916 |
|
|
}
|
1917 |
|
|
|
1918 |
|
|
if ((len > 1) && (optionName[1] == 'e') &&
|
1919 |
|
|
(strncmp(optionName, "-error", len) == 0)) {
|
1920 |
|
|
int optlen;
|
1921 |
|
|
int err, ret;
|
1922 |
|
|
|
1923 |
|
|
optlen = sizeof(int);
|
1924 |
|
|
ret = TclWinGetSockOpt(sock, SOL_SOCKET, SO_ERROR,
|
1925 |
|
|
(char *)&err, &optlen);
|
1926 |
|
|
if (ret == SOCKET_ERROR) {
|
1927 |
|
|
err = (*winSock.WSAGetLastError)();
|
1928 |
|
|
}
|
1929 |
|
|
if (err) {
|
1930 |
|
|
TclWinConvertWSAError(err);
|
1931 |
|
|
Tcl_DStringAppend(dsPtr, Tcl_ErrnoMsg(Tcl_GetErrno()), -1);
|
1932 |
|
|
}
|
1933 |
|
|
return TCL_OK;
|
1934 |
|
|
}
|
1935 |
|
|
|
1936 |
|
|
if ((len == 0) ||
|
1937 |
|
|
((len > 1) && (optionName[1] == 'p') &&
|
1938 |
|
|
(strncmp(optionName, "-peername", len) == 0))) {
|
1939 |
|
|
if ((*winSock.getpeername)(sock, (struct sockaddr *) &peername, &size)
|
1940 |
|
|
== 0) {
|
1941 |
|
|
if (len == 0) {
|
1942 |
|
|
Tcl_DStringAppendElement(dsPtr, "-peername");
|
1943 |
|
|
Tcl_DStringStartSublist(dsPtr);
|
1944 |
|
|
}
|
1945 |
|
|
Tcl_DStringAppendElement(dsPtr,
|
1946 |
|
|
(*winSock.inet_ntoa)(peername.sin_addr));
|
1947 |
|
|
hostEntPtr = (*winSock.gethostbyaddr)(
|
1948 |
|
|
(char *) &(peername.sin_addr), sizeof(peername.sin_addr),
|
1949 |
|
|
AF_INET);
|
1950 |
|
|
if (hostEntPtr != (struct hostent *) NULL) {
|
1951 |
|
|
Tcl_DStringAppendElement(dsPtr, hostEntPtr->h_name);
|
1952 |
|
|
} else {
|
1953 |
|
|
Tcl_DStringAppendElement(dsPtr,
|
1954 |
|
|
(*winSock.inet_ntoa)(peername.sin_addr));
|
1955 |
|
|
}
|
1956 |
|
|
TclFormatInt(buf, (*winSock.ntohs)(peername.sin_port));
|
1957 |
|
|
Tcl_DStringAppendElement(dsPtr, buf);
|
1958 |
|
|
if (len == 0) {
|
1959 |
|
|
Tcl_DStringEndSublist(dsPtr);
|
1960 |
|
|
} else {
|
1961 |
|
|
return TCL_OK;
|
1962 |
|
|
}
|
1963 |
|
|
} else {
|
1964 |
|
|
/*
|
1965 |
|
|
* getpeername failed - but if we were asked for all the options
|
1966 |
|
|
* (len==0), don't flag an error at that point because it could
|
1967 |
|
|
* be an fconfigure request on a server socket. (which have
|
1968 |
|
|
* no peer). {copied from unix/tclUnixChan.c}
|
1969 |
|
|
*/
|
1970 |
|
|
if (len) {
|
1971 |
|
|
TclWinConvertWSAError((*winSock.WSAGetLastError)());
|
1972 |
|
|
if (interp) {
|
1973 |
|
|
Tcl_AppendResult(interp, "can't get peername: ",
|
1974 |
|
|
Tcl_PosixError(interp),
|
1975 |
|
|
(char *) NULL);
|
1976 |
|
|
}
|
1977 |
|
|
return TCL_ERROR;
|
1978 |
|
|
}
|
1979 |
|
|
}
|
1980 |
|
|
}
|
1981 |
|
|
|
1982 |
|
|
if ((len == 0) ||
|
1983 |
|
|
((len > 1) && (optionName[1] == 's') &&
|
1984 |
|
|
(strncmp(optionName, "-sockname", len) == 0))) {
|
1985 |
|
|
if ((*winSock.getsockname)(sock, (struct sockaddr *) &sockname, &size)
|
1986 |
|
|
== 0) {
|
1987 |
|
|
if (len == 0) {
|
1988 |
|
|
Tcl_DStringAppendElement(dsPtr, "-sockname");
|
1989 |
|
|
Tcl_DStringStartSublist(dsPtr);
|
1990 |
|
|
}
|
1991 |
|
|
Tcl_DStringAppendElement(dsPtr,
|
1992 |
|
|
(*winSock.inet_ntoa)(sockname.sin_addr));
|
1993 |
|
|
hostEntPtr = (*winSock.gethostbyaddr)(
|
1994 |
|
|
(char *) &(sockname.sin_addr), sizeof(peername.sin_addr),
|
1995 |
|
|
AF_INET);
|
1996 |
|
|
if (hostEntPtr != (struct hostent *) NULL) {
|
1997 |
|
|
Tcl_DStringAppendElement(dsPtr, hostEntPtr->h_name);
|
1998 |
|
|
} else {
|
1999 |
|
|
Tcl_DStringAppendElement(dsPtr,
|
2000 |
|
|
(*winSock.inet_ntoa)(sockname.sin_addr));
|
2001 |
|
|
}
|
2002 |
|
|
TclFormatInt(buf, (*winSock.ntohs)(sockname.sin_port));
|
2003 |
|
|
Tcl_DStringAppendElement(dsPtr, buf);
|
2004 |
|
|
if (len == 0) {
|
2005 |
|
|
Tcl_DStringEndSublist(dsPtr);
|
2006 |
|
|
} else {
|
2007 |
|
|
return TCL_OK;
|
2008 |
|
|
}
|
2009 |
|
|
} else {
|
2010 |
|
|
if (interp) {
|
2011 |
|
|
TclWinConvertWSAError((*winSock.WSAGetLastError)());
|
2012 |
|
|
Tcl_AppendResult(interp, "can't get sockname: ",
|
2013 |
|
|
Tcl_PosixError(interp),
|
2014 |
|
|
(char *) NULL);
|
2015 |
|
|
}
|
2016 |
|
|
return TCL_ERROR;
|
2017 |
|
|
}
|
2018 |
|
|
}
|
2019 |
|
|
|
2020 |
|
|
if (len > 0) {
|
2021 |
|
|
return Tcl_BadChannelOption(interp, optionName, "peername sockname");
|
2022 |
|
|
}
|
2023 |
|
|
|
2024 |
|
|
return TCL_OK;
|
2025 |
|
|
}
|
2026 |
|
|
|
2027 |
|
|
/*
|
2028 |
|
|
*----------------------------------------------------------------------
|
2029 |
|
|
*
|
2030 |
|
|
* TcpWatchProc --
|
2031 |
|
|
*
|
2032 |
|
|
* Informs the channel driver of the events that the generic
|
2033 |
|
|
* channel code wishes to receive on this socket.
|
2034 |
|
|
*
|
2035 |
|
|
* Results:
|
2036 |
|
|
* None.
|
2037 |
|
|
*
|
2038 |
|
|
* Side effects:
|
2039 |
|
|
* May cause the notifier to poll if any of the specified
|
2040 |
|
|
* conditions are already true.
|
2041 |
|
|
*
|
2042 |
|
|
*----------------------------------------------------------------------
|
2043 |
|
|
*/
|
2044 |
|
|
|
2045 |
|
|
static void
|
2046 |
|
|
TcpWatchProc(instanceData, mask)
|
2047 |
|
|
ClientData instanceData; /* The socket state. */
|
2048 |
|
|
int mask; /* Events of interest; an OR-ed
|
2049 |
|
|
* combination of TCL_READABLE,
|
2050 |
|
|
* TCL_WRITABLE and TCL_EXCEPTION. */
|
2051 |
|
|
{
|
2052 |
|
|
SocketInfo *infoPtr = (SocketInfo *) instanceData;
|
2053 |
|
|
|
2054 |
|
|
/*
|
2055 |
|
|
* Update the watch events mask.
|
2056 |
|
|
*/
|
2057 |
|
|
|
2058 |
|
|
infoPtr->watchEvents = 0;
|
2059 |
|
|
if (mask & TCL_READABLE) {
|
2060 |
|
|
infoPtr->watchEvents |= (FD_READ|FD_CLOSE|FD_ACCEPT);
|
2061 |
|
|
}
|
2062 |
|
|
if (mask & TCL_WRITABLE) {
|
2063 |
|
|
infoPtr->watchEvents |= (FD_WRITE|FD_CONNECT);
|
2064 |
|
|
}
|
2065 |
|
|
|
2066 |
|
|
/*
|
2067 |
|
|
* If there are any conditions already set, then tell the notifier to poll
|
2068 |
|
|
* rather than block.
|
2069 |
|
|
*/
|
2070 |
|
|
|
2071 |
|
|
if (infoPtr->readyEvents & infoPtr->watchEvents) {
|
2072 |
|
|
Tcl_Time blockTime = { 0, 0 };
|
2073 |
|
|
Tcl_SetMaxBlockTime(&blockTime);
|
2074 |
|
|
}
|
2075 |
|
|
}
|
2076 |
|
|
|
2077 |
|
|
/*
|
2078 |
|
|
*----------------------------------------------------------------------
|
2079 |
|
|
*
|
2080 |
|
|
* TcpGetProc --
|
2081 |
|
|
*
|
2082 |
|
|
* Called from Tcl_GetChannelHandle to retrieve an OS handle from inside
|
2083 |
|
|
* a TCP socket based channel.
|
2084 |
|
|
*
|
2085 |
|
|
* Results:
|
2086 |
|
|
* Returns TCL_OK with the socket in handlePtr.
|
2087 |
|
|
*
|
2088 |
|
|
* Side effects:
|
2089 |
|
|
* None.
|
2090 |
|
|
*
|
2091 |
|
|
*----------------------------------------------------------------------
|
2092 |
|
|
*/
|
2093 |
|
|
|
2094 |
|
|
static int
|
2095 |
|
|
TcpGetHandleProc(instanceData, direction, handlePtr)
|
2096 |
|
|
ClientData instanceData; /* The socket state. */
|
2097 |
|
|
int direction; /* Not used. */
|
2098 |
|
|
ClientData *handlePtr; /* Where to store the handle. */
|
2099 |
|
|
{
|
2100 |
|
|
SocketInfo *statePtr = (SocketInfo *) instanceData;
|
2101 |
|
|
|
2102 |
|
|
*handlePtr = (ClientData) statePtr->socket;
|
2103 |
|
|
return TCL_OK;
|
2104 |
|
|
}
|
2105 |
|
|
|
2106 |
|
|
/*
|
2107 |
|
|
*----------------------------------------------------------------------
|
2108 |
|
|
*
|
2109 |
|
|
* SocketThread --
|
2110 |
|
|
*
|
2111 |
|
|
* Helper thread used to manage the socket event handling window.
|
2112 |
|
|
*
|
2113 |
|
|
* Results:
|
2114 |
|
|
* 1 if unable to create socket event window, 0 otherwise.
|
2115 |
|
|
*
|
2116 |
|
|
* Side effects:
|
2117 |
|
|
* None.
|
2118 |
|
|
*
|
2119 |
|
|
*----------------------------------------------------------------------
|
2120 |
|
|
*/
|
2121 |
|
|
|
2122 |
|
|
static DWORD WINAPI
|
2123 |
|
|
SocketThread(LPVOID arg)
|
2124 |
|
|
{
|
2125 |
|
|
MSG msg;
|
2126 |
|
|
ThreadSpecificData *tsdPtr = (ThreadSpecificData *)(arg);
|
2127 |
|
|
|
2128 |
|
|
tsdPtr->hwnd = CreateWindowA("TclSocket", "TclSocket",
|
2129 |
|
|
WS_TILED, 0, 0, 0, 0, NULL, NULL, windowClass.hInstance, NULL);
|
2130 |
|
|
|
2131 |
|
|
/*
|
2132 |
|
|
* Signal the main thread that the window has been created
|
2133 |
|
|
* and that the socket thread is ready to go.
|
2134 |
|
|
*/
|
2135 |
|
|
|
2136 |
|
|
SetEvent(tsdPtr->readyEvent);
|
2137 |
|
|
|
2138 |
|
|
if (tsdPtr->hwnd == NULL) {
|
2139 |
|
|
return 1;
|
2140 |
|
|
} else {
|
2141 |
|
|
/*
|
2142 |
|
|
* store the tsdPtr, it's from a different thread, so it's
|
2143 |
|
|
* not directly accessible, but needed.
|
2144 |
|
|
*/
|
2145 |
|
|
|
2146 |
|
|
#ifdef _WIN64
|
2147 |
|
|
SetWindowLongPtr(tsdPtr->hwnd, GWLP_USERDATA, (LONG) tsdPtr);
|
2148 |
|
|
#else
|
2149 |
|
|
SetWindowLong(tsdPtr->hwnd, GWL_USERDATA, (LONG) tsdPtr);
|
2150 |
|
|
#endif
|
2151 |
|
|
}
|
2152 |
|
|
|
2153 |
|
|
while (1) {
|
2154 |
|
|
/*
|
2155 |
|
|
* Process all outstanding messages on the socket window.
|
2156 |
|
|
*/
|
2157 |
|
|
|
2158 |
|
|
while (PeekMessage(&msg, tsdPtr->hwnd, 0, 0, PM_REMOVE)) {
|
2159 |
|
|
DispatchMessage(&msg);
|
2160 |
|
|
}
|
2161 |
|
|
WaitMessage();
|
2162 |
|
|
}
|
2163 |
|
|
}
|
2164 |
|
|
|
2165 |
|
|
|
2166 |
|
|
/*
|
2167 |
|
|
*----------------------------------------------------------------------
|
2168 |
|
|
*
|
2169 |
|
|
* SocketProc --
|
2170 |
|
|
*
|
2171 |
|
|
* This function is called when WSAAsyncSelect has been used
|
2172 |
|
|
* to register interest in a socket event, and the event has
|
2173 |
|
|
* occurred.
|
2174 |
|
|
*
|
2175 |
|
|
* Results:
|
2176 |
|
|
* 0 on success.
|
2177 |
|
|
*
|
2178 |
|
|
* Side effects:
|
2179 |
|
|
* The flags for the given socket are updated to reflect the
|
2180 |
|
|
* event that occured.
|
2181 |
|
|
*
|
2182 |
|
|
*----------------------------------------------------------------------
|
2183 |
|
|
*/
|
2184 |
|
|
|
2185 |
|
|
static LRESULT CALLBACK
|
2186 |
|
|
SocketProc(hwnd, message, wParam, lParam)
|
2187 |
|
|
HWND hwnd;
|
2188 |
|
|
UINT message;
|
2189 |
|
|
WPARAM wParam;
|
2190 |
|
|
LPARAM lParam;
|
2191 |
|
|
{
|
2192 |
|
|
int event, error;
|
2193 |
|
|
SOCKET socket;
|
2194 |
|
|
SocketInfo *infoPtr;
|
2195 |
|
|
ThreadSpecificData *tsdPtr =
|
2196 |
|
|
#ifdef _WIN64
|
2197 |
|
|
(ThreadSpecificData *) GetWindowLongPtr(hwnd, GWLP_USERDATA);
|
2198 |
|
|
#else
|
2199 |
|
|
(ThreadSpecificData *) GetWindowLong(hwnd, GWL_USERDATA);
|
2200 |
|
|
#endif
|
2201 |
|
|
|
2202 |
|
|
switch (message) {
|
2203 |
|
|
|
2204 |
|
|
default:
|
2205 |
|
|
return DefWindowProc(hwnd, message, wParam, lParam);
|
2206 |
|
|
break;
|
2207 |
|
|
|
2208 |
|
|
case SOCKET_MESSAGE:
|
2209 |
|
|
event = WSAGETSELECTEVENT(lParam);
|
2210 |
|
|
error = WSAGETSELECTERROR(lParam);
|
2211 |
|
|
socket = (SOCKET) wParam;
|
2212 |
|
|
|
2213 |
|
|
/*
|
2214 |
|
|
* Find the specified socket on the socket list and update its
|
2215 |
|
|
* eventState flag.
|
2216 |
|
|
*/
|
2217 |
|
|
|
2218 |
|
|
WaitForSingleObject(tsdPtr->socketListLock, INFINITE);
|
2219 |
|
|
for (infoPtr = tsdPtr->socketList; infoPtr != NULL;
|
2220 |
|
|
infoPtr = infoPtr->nextPtr) {
|
2221 |
|
|
if (infoPtr->socket == socket) {
|
2222 |
|
|
/*
|
2223 |
|
|
* Update the socket state.
|
2224 |
|
|
*/
|
2225 |
|
|
|
2226 |
|
|
/*
|
2227 |
|
|
* A count of FD_ACCEPTS is stored, so if an FD_CLOSE event
|
2228 |
|
|
* happens, then clear the FD_ACCEPT count. Otherwise,
|
2229 |
|
|
* increment the count if the current event is and
|
2230 |
|
|
* FD_ACCEPT.
|
2231 |
|
|
*/
|
2232 |
|
|
|
2233 |
|
|
if (event & FD_CLOSE) {
|
2234 |
|
|
infoPtr->acceptEventCount = 0;
|
2235 |
|
|
infoPtr->readyEvents &= ~(FD_WRITE|FD_ACCEPT);
|
2236 |
|
|
} else if (event & FD_ACCEPT) {
|
2237 |
|
|
infoPtr->acceptEventCount++;
|
2238 |
|
|
}
|
2239 |
|
|
|
2240 |
|
|
if (event & FD_CONNECT) {
|
2241 |
|
|
/*
|
2242 |
|
|
* The socket is now connected,
|
2243 |
|
|
* clear the async connect flag.
|
2244 |
|
|
*/
|
2245 |
|
|
|
2246 |
|
|
infoPtr->flags &= ~(SOCKET_ASYNC_CONNECT);
|
2247 |
|
|
|
2248 |
|
|
/*
|
2249 |
|
|
* Remember any error that occurred so we can report
|
2250 |
|
|
* connection failures.
|
2251 |
|
|
*/
|
2252 |
|
|
|
2253 |
|
|
if (error != ERROR_SUCCESS) {
|
2254 |
|
|
TclWinConvertWSAError(error);
|
2255 |
|
|
infoPtr->lastError = Tcl_GetErrno();
|
2256 |
|
|
}
|
2257 |
|
|
|
2258 |
|
|
}
|
2259 |
|
|
if(infoPtr->flags & SOCKET_ASYNC_CONNECT) {
|
2260 |
|
|
infoPtr->flags &= ~(SOCKET_ASYNC_CONNECT);
|
2261 |
|
|
if (error != ERROR_SUCCESS) {
|
2262 |
|
|
TclWinConvertWSAError(error);
|
2263 |
|
|
infoPtr->lastError = Tcl_GetErrno();
|
2264 |
|
|
}
|
2265 |
|
|
infoPtr->readyEvents |= FD_WRITE;
|
2266 |
|
|
}
|
2267 |
|
|
infoPtr->readyEvents |= event;
|
2268 |
|
|
|
2269 |
|
|
/*
|
2270 |
|
|
* Wake up the Main Thread.
|
2271 |
|
|
*/
|
2272 |
|
|
SetEvent(tsdPtr->readyEvent);
|
2273 |
|
|
Tcl_ThreadAlert(tsdPtr->threadId);
|
2274 |
|
|
break;
|
2275 |
|
|
}
|
2276 |
|
|
}
|
2277 |
|
|
SetEvent(tsdPtr->socketListLock);
|
2278 |
|
|
break;
|
2279 |
|
|
case SOCKET_SELECT:
|
2280 |
|
|
infoPtr = (SocketInfo *) lParam;
|
2281 |
|
|
if (wParam == SELECT) {
|
2282 |
|
|
|
2283 |
|
|
(void) (*winSock.WSAAsyncSelect)(infoPtr->socket, hwnd,
|
2284 |
|
|
SOCKET_MESSAGE, infoPtr->selectEvents);
|
2285 |
|
|
} else {
|
2286 |
|
|
/*
|
2287 |
|
|
* Clear the selection mask
|
2288 |
|
|
*/
|
2289 |
|
|
|
2290 |
|
|
(void) (*winSock.WSAAsyncSelect)(infoPtr->socket, hwnd, 0, 0);
|
2291 |
|
|
}
|
2292 |
|
|
break;
|
2293 |
|
|
case SOCKET_TERMINATE:
|
2294 |
|
|
ExitThread(0);
|
2295 |
|
|
break;
|
2296 |
|
|
}
|
2297 |
|
|
|
2298 |
|
|
return 0;
|
2299 |
|
|
}
|
2300 |
|
|
|
2301 |
|
|
/*
|
2302 |
|
|
*----------------------------------------------------------------------
|
2303 |
|
|
*
|
2304 |
|
|
* Tcl_GetHostName --
|
2305 |
|
|
*
|
2306 |
|
|
* Returns the name of the local host.
|
2307 |
|
|
*
|
2308 |
|
|
* Results:
|
2309 |
|
|
* A string containing the network name for this machine, or
|
2310 |
|
|
* an empty string if we can't figure out the name. The caller
|
2311 |
|
|
* must not modify or free this string.
|
2312 |
|
|
*
|
2313 |
|
|
* Side effects:
|
2314 |
|
|
* None.
|
2315 |
|
|
*
|
2316 |
|
|
*----------------------------------------------------------------------
|
2317 |
|
|
*/
|
2318 |
|
|
|
2319 |
|
|
char *
|
2320 |
|
|
Tcl_GetHostName()
|
2321 |
|
|
{
|
2322 |
|
|
DWORD length;
|
2323 |
|
|
WCHAR wbuf[MAX_COMPUTERNAME_LENGTH + 1];
|
2324 |
|
|
|
2325 |
|
|
Tcl_MutexLock(&socketMutex);
|
2326 |
|
|
InitSockets();
|
2327 |
|
|
|
2328 |
|
|
if (hostnameInitialized) {
|
2329 |
|
|
Tcl_MutexUnlock(&socketMutex);
|
2330 |
|
|
return hostname;
|
2331 |
|
|
}
|
2332 |
|
|
Tcl_MutexUnlock(&socketMutex);
|
2333 |
|
|
|
2334 |
|
|
if (TclpHasSockets(NULL) == TCL_OK) {
|
2335 |
|
|
/*
|
2336 |
|
|
* INTL: bug
|
2337 |
|
|
*/
|
2338 |
|
|
|
2339 |
|
|
if ((*winSock.gethostname)(hostname, sizeof(hostname)) == 0) {
|
2340 |
|
|
Tcl_MutexLock(&socketMutex);
|
2341 |
|
|
hostnameInitialized = 1;
|
2342 |
|
|
Tcl_MutexUnlock(&socketMutex);
|
2343 |
|
|
return hostname;
|
2344 |
|
|
}
|
2345 |
|
|
}
|
2346 |
|
|
Tcl_MutexLock(&socketMutex);
|
2347 |
|
|
length = sizeof(hostname);
|
2348 |
|
|
if ((*tclWinProcs->getComputerNameProc)(wbuf, &length) != 0) {
|
2349 |
|
|
/*
|
2350 |
|
|
* Convert string from native to UTF then change to lowercase.
|
2351 |
|
|
*/
|
2352 |
|
|
|
2353 |
|
|
Tcl_DString ds;
|
2354 |
|
|
|
2355 |
|
|
lstrcpynA(hostname, Tcl_WinTCharToUtf((TCHAR *) wbuf, -1, &ds),
|
2356 |
|
|
sizeof(hostname));
|
2357 |
|
|
Tcl_DStringFree(&ds);
|
2358 |
|
|
Tcl_UtfToLower(hostname);
|
2359 |
|
|
} else {
|
2360 |
|
|
hostname[0] = '\0';
|
2361 |
|
|
}
|
2362 |
|
|
hostnameInitialized = 1;
|
2363 |
|
|
Tcl_MutexUnlock(&socketMutex);
|
2364 |
|
|
return hostname;
|
2365 |
|
|
}
|
2366 |
|
|
|
2367 |
|
|
/*
|
2368 |
|
|
*----------------------------------------------------------------------
|
2369 |
|
|
*
|
2370 |
|
|
* TclWinGetSockOpt, et al. --
|
2371 |
|
|
*
|
2372 |
|
|
* These functions are wrappers that let us bind the WinSock
|
2373 |
|
|
* API dynamically so we can run on systems that don't have
|
2374 |
|
|
* the wsock32.dll. We need wrappers for these interfaces
|
2375 |
|
|
* because they are called from the generic Tcl code.
|
2376 |
|
|
*
|
2377 |
|
|
* Results:
|
2378 |
|
|
* As defined for each function.
|
2379 |
|
|
*
|
2380 |
|
|
* Side effects:
|
2381 |
|
|
* As defined for each function.
|
2382 |
|
|
*
|
2383 |
|
|
*----------------------------------------------------------------------
|
2384 |
|
|
*/
|
2385 |
|
|
|
2386 |
|
|
int
|
2387 |
|
|
TclWinGetSockOpt(SOCKET s, int level, int optname, char * optval,
|
2388 |
|
|
int FAR *optlen)
|
2389 |
|
|
{
|
2390 |
|
|
/*
|
2391 |
|
|
* Check that WinSock is initialized; do not call it if not, to
|
2392 |
|
|
* prevent system crashes. This can happen at exit time if the exit
|
2393 |
|
|
* handler for WinSock ran before other exit handlers that want to
|
2394 |
|
|
* use sockets.
|
2395 |
|
|
*/
|
2396 |
|
|
|
2397 |
|
|
if (!SocketsEnabled()) {
|
2398 |
|
|
return SOCKET_ERROR;
|
2399 |
|
|
}
|
2400 |
|
|
|
2401 |
|
|
return (*winSock.getsockopt)(s, level, optname, optval, optlen);
|
2402 |
|
|
}
|
2403 |
|
|
|
2404 |
|
|
int
|
2405 |
|
|
TclWinSetSockOpt(SOCKET s, int level, int optname, const char * optval,
|
2406 |
|
|
int optlen)
|
2407 |
|
|
{
|
2408 |
|
|
/*
|
2409 |
|
|
* Check that WinSock is initialized; do not call it if not, to
|
2410 |
|
|
* prevent system crashes. This can happen at exit time if the exit
|
2411 |
|
|
* handler for WinSock ran before other exit handlers that want to
|
2412 |
|
|
* use sockets.
|
2413 |
|
|
*/
|
2414 |
|
|
if (!SocketsEnabled()) {
|
2415 |
|
|
return SOCKET_ERROR;
|
2416 |
|
|
}
|
2417 |
|
|
|
2418 |
|
|
return (*winSock.setsockopt)(s, level, optname, optval, optlen);
|
2419 |
|
|
}
|
2420 |
|
|
|
2421 |
|
|
u_short
|
2422 |
|
|
TclWinNToHS(u_short netshort)
|
2423 |
|
|
{
|
2424 |
|
|
/*
|
2425 |
|
|
* Check that WinSock is initialized; do not call it if not, to
|
2426 |
|
|
* prevent system crashes. This can happen at exit time if the exit
|
2427 |
|
|
* handler for WinSock ran before other exit handlers that want to
|
2428 |
|
|
* use sockets.
|
2429 |
|
|
*/
|
2430 |
|
|
|
2431 |
|
|
if (!SocketsEnabled()) {
|
2432 |
|
|
return (u_short) -1;
|
2433 |
|
|
}
|
2434 |
|
|
|
2435 |
|
|
return (*winSock.ntohs)(netshort);
|
2436 |
|
|
}
|
2437 |
|
|
|
2438 |
|
|
struct servent *
|
2439 |
|
|
TclWinGetServByName(const char * name, const char * proto)
|
2440 |
|
|
{
|
2441 |
|
|
/*
|
2442 |
|
|
* Check that WinSock is initialized; do not call it if not, to
|
2443 |
|
|
* prevent system crashes. This can happen at exit time if the exit
|
2444 |
|
|
* handler for WinSock ran before other exit handlers that want to
|
2445 |
|
|
* use sockets.
|
2446 |
|
|
*/
|
2447 |
|
|
if (!SocketsEnabled()) {
|
2448 |
|
|
return (struct servent *) NULL;
|
2449 |
|
|
}
|
2450 |
|
|
|
2451 |
|
|
return (*winSock.getservbyname)(name, proto);
|
2452 |
|
|
}
|
2453 |
|
|
|
2454 |
|
|
/* $History: tclwinsock.c $
|
2455 |
|
|
*
|
2456 |
|
|
* ***************** Version 1 *****************
|
2457 |
|
|
* User: Dtashley Date: 1/02/01 Time: 12:26a
|
2458 |
|
|
* Created in $/IjuScripter, IjuConsole/Source/Tcl Base
|
2459 |
|
|
* Initial check-in.
|
2460 |
|
|
*/
|
2461 |
|
|
|
2462 |
|
|
/* End of TCLWINSOCK.C */ |