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