diff options
Diffstat (limited to 'win/tclWinSock.c')
| -rw-r--r-- | win/tclWinSock.c | 2764 |
1 files changed, 1383 insertions, 1381 deletions
diff --git a/win/tclWinSock.c b/win/tclWinSock.c index 1477eeb..3990111 100644 --- a/win/tclWinSock.c +++ b/win/tclWinSock.c @@ -1,195 +1,168 @@ -/* +/* * tclWinSock.c -- * * This file contains Windows-specific socket related code. * * Copyright (c) 1995-1997 Sun Microsystems, Inc. * - * See the file "license.terms" for information on usage and redistribution - * of this file, and for a DISCLAIMER OF ALL WARRANTIES. + * See the file "license.terms" for information on usage and redistribution of + * this file, and for a DISCLAIMER OF ALL WARRANTIES. + * + * ----------------------------------------------------------------------- + * + * General information on how this module works. + * + * - Each Tcl-thread with its sockets maintains an internal window to receive + * socket messages from the OS. + * + * - To ensure that message reception is always running this window is + * actually owned and handled by an internal thread. This we call the + * co-thread of Tcl's thread. + * + * - The whole structure is set up by InitSockets() which is called for each + * Tcl thread. The implementation of the co-thread is in SocketThread(), + * and the messages are handled by SocketProc(). The connection between + * both is not directly visible, it is done through a Win32 window class. + * This class is initialized by InitSockets() as well, and used in the + * creation of the message receiver windows. + * + * - An important thing to note is that *both* thread and co-thread have + * access to the list of sockets maintained in the private TSD data of the + * thread. The co-thread was given access to it upon creation through the + * new thread's client-data. + * + * Because of this dual access the TSD data contains an OS mutex, the + * "socketListLock", to mediate exclusion between thread and co-thread. + * + * The co-thread's access is all in SocketProc(). The thread's access is + * through SocketEventProc() (1) and the functions called by it. + * + * (Ad 1) This is the handler function for all queued socket events, which + * all the OS messages are translated to through the EventSource (2) + * driven by the OS messages. * - * RCS: @(#) $Id: tclWinSock.c,v 1.43 2004/05/05 18:22:38 davygrvy Exp $ + * (Ad 2) The main functions for this are SocketSetupProc() and + * SocketCheckProc(). */ #include "tclWinInt.h" +#ifdef _MSC_VER +# pragma comment (lib, "ws2_32") +#endif + +/* + * Support for control over sockets' KEEPALIVE and NODELAY behavior is + * currently disabled. + */ + +#undef TCL_FEATURE_KEEPALIVE_NAGLE + /* - * Make sure to remove the redirection defines set in tclWinPort.h - * that is in use in other sections of the core, except for us. + * Make sure to remove the redirection defines set in tclWinPort.h that is in + * use in other sections of the core, except for us. */ + #undef getservbyname #undef getsockopt -#undef ntohs #undef setsockopt /* * The following variable is used to tell whether this module has been - * initialized. + * initialized. If 1, initialization of sockets was successful, if -1 then + * socket initialization failed (WSAStartup failed). */ static int initialized = 0; - -static int hostnameInitialized = 0; -static char hostname[255]; /* This buffer should be big enough for - * hostname plus domain name. */ - +static const TCHAR classname[] = TEXT("TclSocket"); TCL_DECLARE_MUTEX(socketMutex) - /* - * Mingw, Cygwin and OpenWatcom may not have LPFN_* typedefs. + * The following variable holds the network name of this host. */ -#ifdef HAVE_NO_LPFN_DECLS - typedef SOCKET (PASCAL FAR *LPFN_ACCEPT)(SOCKET s, - struct sockaddr FAR * addr, int FAR * addrlen); - typedef int (PASCAL FAR *LPFN_BIND)(SOCKET s, - const struct sockaddr FAR *addr, int namelen); - typedef int (PASCAL FAR *LPFN_CLOSESOCKET)(SOCKET s); - typedef int (PASCAL FAR *LPFN_CONNECT)(SOCKET s, - const struct sockaddr FAR *name, int namelen); - typedef struct hostent FAR * (PASCAL FAR *LPFN_GETHOSTBYADDR) - (const char FAR *addr, int addrlen, int addrtype); - typedef struct hostent FAR * (PASCAL FAR *LPFN_GETHOSTBYNAME) - (const char FAR * name); - typedef int (PASCAL FAR *LPFN_GETHOSTNAME)(char FAR * name, - int namelen); - typedef int (PASCAL FAR *LPFN_GETPEERNAME)(SOCKET sock, - struct sockaddr FAR *name, int FAR *namelen); - typedef struct servent FAR * (PASCAL FAR *LPFN_GETSERVBYNAME) - (const char FAR * name, const char FAR * proto); - typedef int (PASCAL FAR *LPFN_GETSOCKNAME)(SOCKET sock, - struct sockaddr FAR *name, int FAR *namelen); - typedef int (PASCAL FAR *LPFN_GETSOCKOPT)(SOCKET s, int level, - int optname, char FAR * optval, int FAR *optlen); - typedef u_short (PASCAL FAR *LPFN_HTONS)(u_short hostshort); - typedef unsigned long (PASCAL FAR *LPFN_INET_ADDR) - (const char FAR * cp); - typedef char FAR * (PASCAL FAR *LPFN_INET_NTOA) - (struct in_addr in); - typedef int (PASCAL FAR *LPFN_IOCTLSOCKET)(SOCKET s, - long cmd, u_long FAR *argp); - typedef int (PASCAL FAR *LPFN_LISTEN)(SOCKET s, int backlog); - typedef u_short (PASCAL FAR *LPFN_NTOHS)(u_short netshort); - typedef int (PASCAL FAR *LPFN_RECV)(SOCKET s, char FAR * buf, - int len, int flags); - typedef int (PASCAL FAR *LPFN_SELECT)(int nfds, - fd_set FAR * readfds, fd_set FAR * writefds, - fd_set FAR * exceptfds, - const struct timeval FAR * timeout); - typedef int (PASCAL FAR *LPFN_SEND)(SOCKET s, - const char FAR * buf, int len, int flags); - typedef int (PASCAL FAR *LPFN_SETSOCKOPT)(SOCKET s, - int level, int optname, const char FAR * optval, - int optlen); - typedef SOCKET (PASCAL FAR *LPFN_SOCKET)(int af, - int type, int protocol); - typedef int (PASCAL FAR *LPFN_WSAASYNCSELECT)(SOCKET s, - HWND hWnd, u_int wMsg, long lEvent); - typedef int (PASCAL FAR *LPFN_WSACLEANUP)(void); - typedef int (PASCAL FAR *LPFN_WSAGETLASTERROR)(void); - typedef int (PASCAL FAR *LPFN_WSASTARTUP)(WORD wVersionRequired, - LPWSADATA lpWSAData); -#endif - +static TclInitProcessGlobalValueProc InitializeHostName; +static ProcessGlobalValue hostName = { + 0, 0, NULL, NULL, InitializeHostName, NULL, NULL +}; /* - * The following structure contains pointers to all of the WinSock API - * entry points used by Tcl. It is initialized by InitSockets. Since - * we dynamically load the Winsock DLL on demand, we must use this - * function table to refer to functions in the winsock API. + * The following defines declare the messages used on socket windows. */ -static struct { - HMODULE hModule; /* Handle to WinSock library. */ - - /* Winsock 1.1 functions */ - LPFN_ACCEPT accept; - LPFN_BIND bind; - LPFN_CLOSESOCKET closesocket; - LPFN_CONNECT connect; - LPFN_GETHOSTBYADDR gethostbyaddr; - LPFN_GETHOSTBYNAME gethostbyname; - LPFN_GETHOSTNAME gethostname; - LPFN_GETPEERNAME getpeername; - LPFN_GETSERVBYNAME getservbyname; - LPFN_GETSOCKNAME getsockname; - LPFN_GETSOCKOPT getsockopt; - LPFN_HTONS htons; - LPFN_INET_ADDR inet_addr; - LPFN_INET_NTOA inet_ntoa; - LPFN_IOCTLSOCKET ioctlsocket; - LPFN_LISTEN listen; - LPFN_NTOHS ntohs; - LPFN_RECV recv; - LPFN_SELECT select; - LPFN_SEND send; - LPFN_SETSOCKOPT setsockopt; - LPFN_SOCKET socket; - LPFN_WSAASYNCSELECT WSAAsyncSelect; - LPFN_WSACLEANUP WSACleanup; - LPFN_WSAGETLASTERROR WSAGetLastError; - LPFN_WSASTARTUP WSAStartup; - -} winSock; +#define SOCKET_MESSAGE WM_USER+1 +#define SOCKET_SELECT WM_USER+2 +#define SOCKET_TERMINATE WM_USER+3 +#define SELECT TRUE +#define UNSELECT FALSE /* - * The following defines declare the messages used on socket windows. + * This is needed to comply with the strict aliasing rules of GCC, but it also + * simplifies casting between the different sockaddr types. */ -#define SOCKET_MESSAGE WM_USER+1 -#define SOCKET_SELECT WM_USER+2 -#define SOCKET_TERMINATE WM_USER+3 -#define SELECT TRUE -#define UNSELECT FALSE +typedef union { + struct sockaddr sa; + struct sockaddr_in sa4; + struct sockaddr_in6 sa6; + struct sockaddr_storage sas; +} address; + +#ifndef IN6_ARE_ADDR_EQUAL +#define IN6_ARE_ADDR_EQUAL IN6_ADDR_EQUAL +#endif + +typedef struct SocketInfo SocketInfo; + +typedef struct TcpFdList { + SocketInfo *infoPtr; + SOCKET fd; + struct TcpFdList *next; +} TcpFdList; /* - * The following structure is used to store the data associated with - * each socket. + * The following structure is used to store the data associated with each + * socket. */ -typedef struct SocketInfo { - Tcl_Channel channel; /* Channel associated with this - * socket. */ - SOCKET socket; /* Windows SOCKET handle. */ - int flags; /* Bit field comprised of the flags - * described below. */ - int watchEvents; /* OR'ed combination of FD_READ, - * FD_WRITE, FD_CLOSE, FD_ACCEPT and - * FD_CONNECT that indicate which - * events are interesting. */ - int readyEvents; /* OR'ed combination of FD_READ, - * FD_WRITE, FD_CLOSE, FD_ACCEPT and - * FD_CONNECT that indicate which - * events have occurred. */ - int selectEvents; /* OR'ed combination of FD_READ, - * FD_WRITE, FD_CLOSE, FD_ACCEPT and - * FD_CONNECT that indicate which - * events are currently being - * selected. */ - int acceptEventCount; /* Count of the current number of - * FD_ACCEPTs that have arrived and - * not yet processed. */ - Tcl_TcpAcceptProc *acceptProc; /* Proc to call on accept. */ - ClientData acceptProcData; /* The data for the accept proc. */ - int lastError; /* Error code from last message. */ - struct SocketInfo *nextPtr; /* The next socket on the per-thread - * socket list. */ -} SocketInfo; +struct SocketInfo { + Tcl_Channel channel; /* Channel associated with this socket. */ + struct TcpFdList *sockets; /* Windows SOCKET handle. */ + int flags; /* Bit field comprised of the flags described + * below. */ + int watchEvents; /* OR'ed combination of FD_READ, FD_WRITE, + * FD_CLOSE, FD_ACCEPT and FD_CONNECT that + * indicate which events are interesting. */ + int readyEvents; /* OR'ed combination of FD_READ, FD_WRITE, + * FD_CLOSE, FD_ACCEPT and FD_CONNECT that + * indicate which events have occurred. */ + int selectEvents; /* OR'ed combination of FD_READ, FD_WRITE, + * FD_CLOSE, FD_ACCEPT and FD_CONNECT that + * indicate which events are currently being + * selected. */ + int acceptEventCount; /* Count of the current number of FD_ACCEPTs + * that have arrived and not yet processed. */ + Tcl_TcpAcceptProc *acceptProc; + /* Proc to call on accept. */ + ClientData acceptProcData; /* The data for the accept proc. */ + int lastError; /* Error code from last message. */ + struct SocketInfo *nextPtr; /* The next socket on the per-thread socket + * list. */ +}; /* - * The following structure is what is added to the Tcl event queue when - * a socket event occurs. + * The following structure is what is added to the Tcl event queue when a + * socket event occurs. */ -typedef struct SocketEvent { - Tcl_Event header; /* Information that is standard for - * all events. */ - SOCKET socket; /* Socket descriptor that is ready. Used - * to find the SocketInfo structure for - * the file (can't point directly to the - * SocketInfo structure because it could - * go away while the event is queued). */ +typedef struct { + Tcl_Event header; /* Information that is standard for all + * events. */ + SOCKET socket; /* Socket descriptor that is ready. Used to + * find the SocketInfo structure for the file + * (can't point directly to the SocketInfo + * structure because it could go away while + * the event is queued). */ } SocketEvent; /* @@ -199,30 +172,28 @@ typedef struct SocketEvent { #define TCP_BUFFER_SIZE 4096 /* - * The following macros may be used to set the flags field of - * a SocketInfo structure. + * The following macros may be used to set the flags field of a SocketInfo + * structure. */ -#define SOCKET_ASYNC (1<<0) /* The socket is in blocking - * mode. */ -#define SOCKET_EOF (1<<1) /* A zero read happened on - * the socket. */ -#define SOCKET_ASYNC_CONNECT (1<<2) /* This socket uses async - * connect. */ -#define SOCKET_PENDING (1<<3) /* A message has been sent - * for this socket */ - -typedef struct ThreadSpecificData { - HWND hwnd; /* Handle to window for socket messages. */ - HANDLE socketThread; /* Thread handling the window */ - Tcl_ThreadId threadId; /* Parent thread. */ - HANDLE readyEvent; /* Event indicating that a socket event is - * ready. Also used to indicate that the - * socketThread has been initialized and has - * started. */ - HANDLE socketListLock; /* Win32 Event to lock the socketList */ - SocketInfo *socketList; /* Every open socket in this thread has an - * entry on this list. */ +#define SOCKET_ASYNC (1<<0) /* The socket is in blocking mode. */ +#define SOCKET_EOF (1<<1) /* A zero read happened on the + * socket. */ +#define SOCKET_ASYNC_CONNECT (1<<2) /* This socket uses async connect. */ +#define SOCKET_PENDING (1<<3) /* A message has been sent for this + * socket */ + +typedef struct { + HWND hwnd; /* Handle to window for socket messages. */ + HANDLE socketThread; /* Thread handling the window */ + Tcl_ThreadId threadId; /* Parent thread. */ + HANDLE readyEvent; /* Event indicating that a socket event is + * ready. Also used to indicate that the + * socketThread has been initialized and has + * started. */ + HANDLE socketListLock; /* Win32 Event to lock the socketList */ + SocketInfo *socketList; /* Every open socket in this thread has an + * entry on this list. */ } ThreadSpecificData; static Tcl_ThreadDataKey dataKey; @@ -232,47 +203,43 @@ static WNDCLASS windowClass; * Static functions defined in this file. */ -static SocketInfo * CreateSocket _ANSI_ARGS_((Tcl_Interp *interp, - int port, CONST char *host, - int server, CONST char *myaddr, - int myport, int async)); -static int CreateSocketAddress _ANSI_ARGS_( - (LPSOCKADDR_IN sockaddrPtr, - CONST char *host, int port)); -static void InitSockets _ANSI_ARGS_((void)); -static SocketInfo * NewSocketInfo _ANSI_ARGS_((SOCKET socket)); -static Tcl_EventCheckProc SocketCheckProc; -static Tcl_EventProc SocketEventProc; -static void SocketExitHandler _ANSI_ARGS_(( - ClientData clientData)); -static LRESULT CALLBACK SocketProc _ANSI_ARGS_((HWND hwnd, - UINT message, WPARAM wParam, - LPARAM lParam)); -static Tcl_EventSetupProc SocketSetupProc; -static Tcl_ExitProc SocketThreadExitHandler; -static int SocketsEnabled _ANSI_ARGS_((void)); -static void TcpAccept _ANSI_ARGS_((SocketInfo *infoPtr)); +static SocketInfo * CreateSocket(Tcl_Interp *interp, int port, + const char *host, int server, const char *myaddr, + int myport, int async); +static void InitSockets(void); +static SocketInfo * NewSocketInfo(SOCKET socket); +static void SocketExitHandler(ClientData clientData); +static LRESULT CALLBACK SocketProc(HWND hwnd, UINT message, WPARAM wParam, + LPARAM lParam); +static int SocketsEnabled(void); +static void TcpAccept(TcpFdList *fds, SOCKET newSocket, address addr); +static int WaitForSocketEvent(SocketInfo *infoPtr, int events, + int *errorCodePtr); +static DWORD WINAPI SocketThread(LPVOID arg); +static void TcpThreadActionProc(ClientData instanceData, + int action); + +static Tcl_EventCheckProc SocketCheckProc; +static Tcl_EventProc SocketEventProc; +static Tcl_EventSetupProc SocketSetupProc; static Tcl_DriverBlockModeProc TcpBlockProc; static Tcl_DriverCloseProc TcpCloseProc; +static Tcl_DriverClose2Proc TcpClose2Proc; static Tcl_DriverSetOptionProc TcpSetOptionProc; static Tcl_DriverGetOptionProc TcpGetOptionProc; static Tcl_DriverInputProc TcpInputProc; static Tcl_DriverOutputProc TcpOutputProc; static Tcl_DriverWatchProc TcpWatchProc; static Tcl_DriverGetHandleProc TcpGetHandleProc; -static int WaitForSocketEvent _ANSI_ARGS_(( - SocketInfo *infoPtr, int events, - int *errorCodePtr)); -static DWORD WINAPI SocketThread _ANSI_ARGS_((LPVOID arg)); /* * This structure describes the channel type structure for TCP socket * based IO. */ -static Tcl_ChannelType tcpChannelType = { +static const Tcl_ChannelType tcpChannelType = { "tcp", /* Type name. */ - TCL_CHANNEL_VERSION_2, /* v2 channel */ + TCL_CHANNEL_VERSION_5, /* v5 channel */ TcpCloseProc, /* Close proc. */ TcpInputProc, /* Input proc. */ TcpOutputProc, /* Output proc. */ @@ -281,251 +248,120 @@ static Tcl_ChannelType tcpChannelType = { TcpGetOptionProc, /* Get option proc. */ TcpWatchProc, /* Set up notifier to watch this channel. */ TcpGetHandleProc, /* Get an OS handle from channel. */ - NULL, /* close2proc. */ + TcpClose2Proc, /* Close2proc. */ TcpBlockProc, /* Set socket into (non-)blocking mode. */ NULL, /* flush proc. */ NULL, /* handler proc. */ + NULL, /* wide seek proc */ + TcpThreadActionProc, /* thread action proc */ + NULL /* truncate */ }; - /* *---------------------------------------------------------------------- * * InitSockets -- * - * Initialize the socket module. Attempts to load the wsock32.dll - * library and set up the winSock function table. If successful, + * Initialize the socket module. If winsock startup is successful, * registers the event window for the socket notifier code. * - * Assumes Mutex is held. + * Assumes socketMutex is held. * * Results: * None. * * Side effects: - * Dynamically loads wsock32.dll, and registers a new window - * class and creates a window for use in asynchronous socket - * notification. + * Initializes winsock, registers a new window class and creates a + * window for use in asynchronous socket notification. * *---------------------------------------------------------------------- */ static void -InitSockets() +InitSockets(void) { DWORD id; - WSADATA wsaData; - DWORD err; - ThreadSpecificData *tsdPtr = - (ThreadSpecificData *)TclThreadDataKeyGet(&dataKey); + ThreadSpecificData *tsdPtr = TclThreadDataKeyGet(&dataKey); if (!initialized) { initialized = 1; - Tcl_CreateExitHandler(SocketExitHandler, (ClientData) NULL); - - winSock.hModule = LoadLibraryA("wsock32.dll"); + TclCreateLateExitHandler(SocketExitHandler, NULL); - if (winSock.hModule == NULL) { - return; - } - /* - * Initialize the function table. + * Create the async notification window with a new class. We must + * create a new class to avoid a Windows 95 bug that causes us to get + * the wrong message number for socket events if the message window is + * a subclass of a static control. */ - winSock.accept = (LPFN_ACCEPT) - GetProcAddress(winSock.hModule, "accept"); - winSock.bind = (LPFN_BIND) - GetProcAddress(winSock.hModule, "bind"); - winSock.closesocket = (LPFN_CLOSESOCKET) - GetProcAddress(winSock.hModule, "closesocket"); - winSock.connect = (LPFN_CONNECT) - GetProcAddress(winSock.hModule, "connect"); - winSock.gethostbyaddr = (LPFN_GETHOSTBYADDR) - GetProcAddress(winSock.hModule, "gethostbyaddr"); - winSock.gethostbyname = (LPFN_GETHOSTBYNAME) - GetProcAddress(winSock.hModule, "gethostbyname"); - winSock.gethostname = (LPFN_GETHOSTNAME) - GetProcAddress(winSock.hModule, "gethostname"); - winSock.getpeername = (LPFN_GETPEERNAME) - GetProcAddress(winSock.hModule, "getpeername"); - winSock.getservbyname = (LPFN_GETSERVBYNAME) - GetProcAddress(winSock.hModule, "getservbyname"); - winSock.getsockname = (LPFN_GETSOCKNAME) - GetProcAddress(winSock.hModule, "getsockname"); - winSock.getsockopt = (LPFN_GETSOCKOPT) - GetProcAddress(winSock.hModule, "getsockopt"); - winSock.htons = (LPFN_HTONS) - GetProcAddress(winSock.hModule, "htons"); - winSock.inet_addr = (LPFN_INET_ADDR) - GetProcAddress(winSock.hModule, "inet_addr"); - winSock.inet_ntoa = (LPFN_INET_NTOA) - GetProcAddress(winSock.hModule, "inet_ntoa"); - winSock.ioctlsocket = (LPFN_IOCTLSOCKET) - GetProcAddress(winSock.hModule, "ioctlsocket"); - winSock.listen = (LPFN_LISTEN) - GetProcAddress(winSock.hModule, "listen"); - winSock.ntohs = (LPFN_NTOHS) - GetProcAddress(winSock.hModule, "ntohs"); - winSock.recv = (LPFN_RECV) - GetProcAddress(winSock.hModule, "recv"); - winSock.select = (LPFN_SELECT) - GetProcAddress(winSock.hModule, "select"); - winSock.send = (LPFN_SEND) - GetProcAddress(winSock.hModule, "send"); - winSock.setsockopt = (LPFN_SETSOCKOPT) - GetProcAddress(winSock.hModule, "setsockopt"); - winSock.socket = (LPFN_SOCKET) - GetProcAddress(winSock.hModule, "socket"); - winSock.WSAAsyncSelect = (LPFN_WSAASYNCSELECT) - GetProcAddress(winSock.hModule, "WSAAsyncSelect"); - winSock.WSACleanup = (LPFN_WSACLEANUP) - GetProcAddress(winSock.hModule, "WSACleanup"); - winSock.WSAGetLastError = (LPFN_WSAGETLASTERROR) - GetProcAddress(winSock.hModule, "WSAGetLastError"); - winSock.WSAStartup = (LPFN_WSASTARTUP) - GetProcAddress(winSock.hModule, "WSAStartup"); - - /* - * Now check that all fields are properly initialized. If not, - * return zero to indicate that we failed to initialize - * properly. - */ - - if ((winSock.accept == NULL) || - (winSock.bind == NULL) || - (winSock.closesocket == NULL) || - (winSock.connect == NULL) || - (winSock.gethostbyname == NULL) || - (winSock.gethostbyaddr == NULL) || - (winSock.gethostname == NULL) || - (winSock.getpeername == NULL) || - (winSock.getservbyname == NULL) || - (winSock.getsockname == NULL) || - (winSock.getsockopt == NULL) || - (winSock.htons == NULL) || - (winSock.inet_addr == NULL) || - (winSock.inet_ntoa == NULL) || - (winSock.ioctlsocket == NULL) || - (winSock.listen == NULL) || - (winSock.ntohs == NULL) || - (winSock.recv == NULL) || - (winSock.select == NULL) || - (winSock.send == NULL) || - (winSock.setsockopt == NULL) || - (winSock.socket == NULL) || - (winSock.WSAAsyncSelect == NULL) || - (winSock.WSACleanup == NULL) || - (winSock.WSAGetLastError == NULL) || - (winSock.WSAStartup == NULL)) - { - goto unloadLibrary; - } - - /* - * Create the async notification window with a new class. We - * must create a new class to avoid a Windows 95 bug that causes - * us to get the wrong message number for socket events if the - * message window is a subclass of a static control. - */ - windowClass.style = 0; windowClass.cbClsExtra = 0; windowClass.cbWndExtra = 0; windowClass.hInstance = TclWinGetTclInstance(); windowClass.hbrBackground = NULL; windowClass.lpszMenuName = NULL; - windowClass.lpszClassName = "TclSocket"; + windowClass.lpszClassName = classname; windowClass.lpfnWndProc = SocketProc; windowClass.hIcon = NULL; windowClass.hCursor = NULL; - if (!RegisterClassA(&windowClass)) { + if (!RegisterClass(&windowClass)) { TclWinConvertError(GetLastError()); - goto unloadLibrary; + goto initFailure; } + } - /* - * Initialize the winsock library and check the interface - * version actually loaded. We only ask for the 1.1 interface - * and do require that it not be less than 1.1. - */ - -#define WSA_VERSION_MAJOR 1 -#define WSA_VERSION_MINOR 1 -#define WSA_VERSION_REQD MAKEWORD(WSA_VERSION_MAJOR, WSA_VERSION_MINOR) - - if ((err = winSock.WSAStartup(WSA_VERSION_REQD, &wsaData)) != 0) { - TclWinConvertWSAError(err); - goto unloadLibrary; - } + /* + * Check for per-thread initialization. + */ - /* - * Note the byte positions are swapped for the comparison, so - * that 0x0002 (2.0, MAKEWORD(2,0)) doesn't look less than 0x0101 - * (1.1). We want the comparison to be 0x0200 < 0x0101. - */ + if (tsdPtr != NULL) { + return; + } - if (MAKEWORD(HIBYTE(wsaData.wVersion), LOBYTE(wsaData.wVersion)) - < MAKEWORD(WSA_VERSION_MINOR, WSA_VERSION_MAJOR)) { - TclWinConvertWSAError(WSAVERNOTSUPPORTED); - winSock.WSACleanup(); - goto unloadLibrary; - } + /* + * OK, this thread has never done anything with sockets before. Construct + * a worker thread to handle asynchronous events related to sockets + * assigned to _this_ thread. + */ -#undef WSA_VERSION_REQD -#undef WSA_VERSION_MAJOR -#undef WSA_VERSION_MINOR + tsdPtr = TCL_TSD_INIT(&dataKey); + tsdPtr->socketList = NULL; + tsdPtr->hwnd = NULL; + tsdPtr->threadId = Tcl_GetCurrentThread(); + tsdPtr->readyEvent = CreateEvent(NULL, FALSE, FALSE, NULL); + if (tsdPtr->readyEvent == NULL) { + goto initFailure; + } + tsdPtr->socketListLock = CreateEvent(NULL, FALSE, TRUE, NULL); + if (tsdPtr->socketListLock == NULL) { + goto initFailure; } + tsdPtr->socketThread = CreateThread(NULL, 256, SocketThread, tsdPtr, 0, + &id); + if (tsdPtr->socketThread == NULL) { + goto initFailure; + } + + SetThreadPriority(tsdPtr->socketThread, THREAD_PRIORITY_HIGHEST); /* - * Check for per-thread initialization. + * Wait for the thread to signal when the window has been created and if + * it is ready to go. */ - if (tsdPtr == NULL) { - tsdPtr = TCL_TSD_INIT(&dataKey); - tsdPtr->socketList = NULL; - tsdPtr->hwnd = NULL; - - tsdPtr->threadId = Tcl_GetCurrentThread(); - - tsdPtr->readyEvent = CreateEvent(NULL, FALSE, FALSE, NULL); - tsdPtr->socketListLock = CreateEvent(NULL, FALSE, TRUE, NULL); - tsdPtr->socketThread = CreateThread(NULL, 256, SocketThread, - tsdPtr, 0, &id); - SetThreadPriority(tsdPtr->socketThread, THREAD_PRIORITY_HIGHEST); - - if (tsdPtr->socketThread == NULL) { - goto unloadLibrary; - } - - - /* - * Wait for the thread to signal that the window has - * been created and is ready to go. Timeout after twenty - * seconds. - */ - - if (WaitForSingleObject(tsdPtr->readyEvent, 20000) - == WAIT_TIMEOUT) { - goto unloadLibrary; - } + WaitForSingleObject(tsdPtr->readyEvent, INFINITE); - if (tsdPtr->hwnd == NULL) { - goto unloadLibrary; - } - - Tcl_CreateEventSource(SocketSetupProc, SocketCheckProc, NULL); - Tcl_CreateThreadExitHandler(SocketThreadExitHandler, NULL); + if (tsdPtr->hwnd == NULL) { + goto initFailure; /* Trouble creating the window. */ } + + Tcl_CreateEventSource(SocketSetupProc, SocketCheckProc, NULL); return; -unloadLibrary: - if (tsdPtr != NULL && tsdPtr->hwnd != NULL) { - SocketThreadExitHandler(0); - } - FreeLibrary(winSock.hModule); - winSock.hModule = NULL; + initFailure: + TclpFinalizeSockets(); + initialized = -1; return; } @@ -534,7 +370,7 @@ unloadLibrary: * * SocketsEnabled -- * - * Check that the WinSock DLL is loaded and ready. + * Check that the WinSock was successfully initialized. * * Results: * 1 if it is. @@ -547,11 +383,12 @@ unloadLibrary: /* ARGSUSED */ static int -SocketsEnabled() +SocketsEnabled(void) { int enabled; + Tcl_MutexLock(&socketMutex); - enabled = (winSock.hModule != NULL); + enabled = (initialized == 1); Tcl_MutexUnlock(&socketMutex); return enabled; } @@ -576,74 +413,78 @@ SocketsEnabled() /* ARGSUSED */ static void -SocketExitHandler(clientData) - ClientData clientData; /* Not used. */ +SocketExitHandler( + ClientData clientData) /* Not used. */ { Tcl_MutexLock(&socketMutex); - if (winSock.hModule) { - /* - * Make sure the socket event handling window is cleaned-up - * for, at most, this thread. - */ - SocketThreadExitHandler(clientData); - UnregisterClass("TclSocket", TclWinGetTclInstance()); - winSock.WSACleanup(); - FreeLibrary(winSock.hModule); - winSock.hModule = NULL; - } + + /* + * Make sure the socket event handling window is cleaned-up for, at + * most, this thread. + */ + + TclpFinalizeSockets(); + UnregisterClass(classname, TclWinGetTclInstance()); initialized = 0; - hostnameInitialized = 0; Tcl_MutexUnlock(&socketMutex); } /* *---------------------------------------------------------------------- * - * SocketThreadExitHandler -- + * TclpFinalizeSockets -- * - * Callback invoked during thread clean up to delete the socket - * event source. + * This function is called from Tcl_FinalizeThread to finalize the + * platform specific socket subsystem. Also, it may be called from within + * this module to cleanup the state if unable to initialize the sockets + * subsystem. * * Results: * None. * * Side effects: - * Delete the event source. + * Deletes the event source and destroys the socket thread. * *---------------------------------------------------------------------- */ - /* ARGSUSED */ -static void -SocketThreadExitHandler(clientData) - ClientData clientData; /* Not used. */ +void +TclpFinalizeSockets(void) { - ThreadSpecificData *tsdPtr = - (ThreadSpecificData *)TclThreadDataKeyGet(&dataKey); + ThreadSpecificData *tsdPtr = TclThreadDataKeyGet(&dataKey); - if (tsdPtr != NULL && tsdPtr->socketThread != NULL) { - DWORD exitCode; + /* + * Careful! This is a finalizer! + */ + + if (tsdPtr == NULL) { + return; + } - GetExitCodeThread(tsdPtr->socketThread, &exitCode); - if (exitCode == STILL_ACTIVE) { + if (tsdPtr->socketThread != NULL) { + if (tsdPtr->hwnd != NULL) { PostMessage(tsdPtr->hwnd, SOCKET_TERMINATE, 0, 0); + /* - * Wait for the thread to close. This ensures that we are + * Wait for the thread to exit. This ensures that we are * completely cleaned up before we leave this function. - * If Tcl_Finalize was called from DllMain, the thread - * is in a paused state so we need to timeout and continue. */ - WaitForSingleObject(tsdPtr->socketThread, 100); + WaitForSingleObject(tsdPtr->readyEvent, INFINITE); + tsdPtr->hwnd = NULL; } CloseHandle(tsdPtr->socketThread); tsdPtr->socketThread = NULL; + } + if (tsdPtr->readyEvent != NULL) { CloseHandle(tsdPtr->readyEvent); + tsdPtr->readyEvent = NULL; + } + if (tsdPtr->socketListLock != NULL) { CloseHandle(tsdPtr->socketListLock); - - Tcl_DeleteThreadExitHandler(SocketThreadExitHandler, NULL); - Tcl_DeleteEventSource(SocketSetupProc, SocketCheckProc, NULL); + tsdPtr->socketListLock = NULL; } + Tcl_DeleteEventSource(SocketSetupProc, SocketCheckProc, NULL); } /* @@ -651,25 +492,27 @@ SocketThreadExitHandler(clientData) * * TclpHasSockets -- * - * This function determines whether sockets are available on the - * current system and returns an error in interp if they are not. - * Note that interp may be NULL. + * This function determines whether sockets are available on the current + * system and returns an error in interp if they are not. Note that + * interp may be NULL. * * Results: - * Returns TCL_OK if the system supports sockets, or TCL_ERROR with - * an error in interp. + * Returns TCL_OK if the system supports sockets, or TCL_ERROR with an + * error in interp (if non-NULL). * * Side effects: - * If not already prepared, initializes the TSD structure and - * socket message handling thread associated to the calling thread - * for the subsystem of the driver. + * If not already prepared, initializes the TSD structure and socket + * message handling thread associated to the calling thread for the + * subsystem of the driver. * *---------------------------------------------------------------------- */ int -TclpHasSockets(interp) - Tcl_Interp *interp; +TclpHasSockets( + Tcl_Interp *interp) /* Where to write an error message if sockets + * are not present, or NULL if no such message + * is to be written. */ { Tcl_MutexLock(&socketMutex); InitSockets(); @@ -679,8 +522,8 @@ TclpHasSockets(interp) return TCL_OK; } if (interp != NULL) { - Tcl_AppendResult(interp, "sockets are not available on this system", - NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "sockets are not available on this system", -1)); } return TCL_ERROR; } @@ -690,8 +533,8 @@ TclpHasSockets(interp) * * SocketSetupProc -- * - * This procedure is invoked before Tcl_DoOneEvent blocks waiting - * for an event. + * This function is invoked before Tcl_DoOneEvent blocks waiting for an + * event. * * Results: * None. @@ -703,9 +546,9 @@ TclpHasSockets(interp) */ void -SocketSetupProc(data, flags) - ClientData data; /* Not used. */ - int flags; /* Event flags as passed to Tcl_DoOneEvent. */ +SocketSetupProc( + ClientData data, /* Not used. */ + int flags) /* Event flags as passed to Tcl_DoOneEvent. */ { SocketInfo *infoPtr; Tcl_Time blockTime = { 0, 0 }; @@ -714,13 +557,13 @@ SocketSetupProc(data, flags) if (!(flags & TCL_FILE_EVENTS)) { return; } - + /* - * Check to see if there is a ready socket. If so, poll. + * Check to see if there is a ready socket. If so, poll. */ WaitForSingleObject(tsdPtr->socketListLock, INFINITE); - for (infoPtr = tsdPtr->socketList; infoPtr != NULL; + for (infoPtr = tsdPtr->socketList; infoPtr != NULL; infoPtr = infoPtr->nextPtr) { if (infoPtr->readyEvents & infoPtr->watchEvents) { Tcl_SetMaxBlockTime(&blockTime); @@ -735,8 +578,8 @@ SocketSetupProc(data, flags) * * SocketCheckProc -- * - * This procedure is called by Tcl_DoOneEvent to check the socket - * event source for events. + * This function is called by Tcl_DoOneEvent to check the socket event + * source for events. * * Results: * None. @@ -748,9 +591,9 @@ SocketSetupProc(data, flags) */ static void -SocketCheckProc(data, flags) - ClientData data; /* Not used. */ - int flags; /* Event flags as passed to Tcl_DoOneEvent. */ +SocketCheckProc( + ClientData data, /* Not used. */ + int flags) /* Event flags as passed to Tcl_DoOneEvent. */ { SocketInfo *infoPtr; SocketEvent *evPtr; @@ -759,7 +602,7 @@ SocketCheckProc(data, flags) if (!(flags & TCL_FILE_EVENTS)) { return; } - + /* * Queue events for any ready sockets that don't already have events * queued (caused by persistent states that won't generate WinSock @@ -767,14 +610,14 @@ SocketCheckProc(data, flags) */ WaitForSingleObject(tsdPtr->socketListLock, INFINITE); - for (infoPtr = tsdPtr->socketList; infoPtr != NULL; + for (infoPtr = tsdPtr->socketList; infoPtr != NULL; infoPtr = infoPtr->nextPtr) { if ((infoPtr->readyEvents & infoPtr->watchEvents) && !(infoPtr->flags & SOCKET_PENDING)) { infoPtr->flags |= SOCKET_PENDING; - evPtr = (SocketEvent *) ckalloc(sizeof(SocketEvent)); + evPtr = ckalloc(sizeof(SocketEvent)); evPtr->header.proc = SocketEventProc; - evPtr->socket = infoPtr->socket; + evPtr->socket = infoPtr->sockets->fd; Tcl_QueueEvent((Tcl_Event *) evPtr, TCL_QUEUE_TAIL); } } @@ -786,33 +629,36 @@ SocketCheckProc(data, flags) * * SocketEventProc -- * - * This procedure is called by Tcl_ServiceEvent when a socket event - * reaches the front of the event queue. This procedure is - * responsible for notifying the generic channel code. + * This function is called by Tcl_ServiceEvent when a socket event + * reaches the front of the event queue. This function is responsible for + * notifying the generic channel code. * * Results: - * Returns 1 if the event was handled, meaning it should be removed - * from the queue. Returns 0 if the event was not handled, meaning - * it should stay on the queue. The only time the event isn't - * handled is if the TCL_FILE_EVENTS flag bit isn't set. + * Returns 1 if the event was handled, meaning it should be removed from + * the queue. Returns 0 if the event was not handled, meaning it should + * stay on the queue. The only time the event isn't handled is if the + * TCL_FILE_EVENTS flag bit isn't set. * * Side effects: - * Whatever the channel callback procedures do. + * Whatever the channel callback functions do. * *---------------------------------------------------------------------- */ static int -SocketEventProc(evPtr, flags) - Tcl_Event *evPtr; /* Event to service. */ - int flags; /* Flags that indicate what events to - * handle, such as TCL_FILE_EVENTS. */ +SocketEventProc( + Tcl_Event *evPtr, /* Event to service. */ + int flags) /* Flags that indicate what events to handle, + * such as TCL_FILE_EVENTS. */ { SocketInfo *infoPtr; SocketEvent *eventPtr = (SocketEvent *) evPtr; - int mask = 0; - int events; + int mask = 0, events; ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); + TcpFdList *fds; + SOCKET newSocket; + address addr; + int len; if (!(flags & TCL_FILE_EVENTS)) { return 0; @@ -823,19 +669,19 @@ SocketEventProc(evPtr, flags) */ WaitForSingleObject(tsdPtr->socketListLock, INFINITE); - for (infoPtr = tsdPtr->socketList; infoPtr != NULL; + for (infoPtr = tsdPtr->socketList; infoPtr != NULL; infoPtr = infoPtr->nextPtr) { - if (infoPtr->socket == eventPtr->socket) { + if (infoPtr->sockets->fd == eventPtr->socket) { break; } } - SetEvent(tsdPtr->socketListLock); /* * Discard events that have gone stale. */ if (!infoPtr) { + SetEvent(tsdPtr->socketListLock); return 1; } @@ -846,29 +692,86 @@ SocketEventProc(evPtr, flags) */ if (infoPtr->readyEvents & FD_ACCEPT) { - TcpAccept(infoPtr); + for (fds = infoPtr->sockets; fds != NULL; fds = fds->next) { + + /* + * Accept the incoming connection request. + */ + len = sizeof(address); + + newSocket = accept(fds->fd, &(addr.sa), &len); + + /* On Tcl server sockets with multiple OS fds we loop over the fds trying + * an accept() on each, so we expect INVALID_SOCKET. There are also other + * network stack conditions that can result in FD_ACCEPT but a subsequent + * failure on accept() by the time we get around to it. + * Access to sockets (acceptEventCount, readyEvents) in socketList + * is still protected by the lock (prevents reintroduction of + * SF Tcl Bug 3056775. + */ + + if (newSocket == INVALID_SOCKET) { + /* int err = WSAGetLastError(); */ + continue; + } + + /* + * It is possible that more than one FD_ACCEPT has been sent, so an extra + * count must be kept. Decrement the count, and reset the readyEvent bit + * if the count is no longer > 0. + */ + infoPtr->acceptEventCount--; + + if (infoPtr->acceptEventCount <= 0) { + infoPtr->readyEvents &= ~(FD_ACCEPT); + } + + SetEvent(tsdPtr->socketListLock); + + /* Caution: TcpAccept() has the side-effect of evaluating the server + * accept script (via AcceptCallbackProc() in tclIOCmd.c), which can + * close the server socket and invalidate infoPtr and fds. + * If TcpAccept() accepts a socket we must return immediately and let + * SocketCheckProc queue additional FD_ACCEPT events. + */ + TcpAccept(fds, newSocket, addr); + return 1; + } + + /* Loop terminated with no sockets accepted; clear the ready mask so + * we can detect the next connection request. Note that connection + * requests are level triggered, so if there is a request already + * pending, a new event will be generated. + */ + infoPtr->acceptEventCount = 0; + infoPtr->readyEvents &= ~(FD_ACCEPT); + + SetEvent(tsdPtr->socketListLock); return 1; } + SetEvent(tsdPtr->socketListLock); + /* - * Mask off unwanted events and compute the read/write mask so - * we can notify the channel. + * Mask off unwanted events and compute the read/write mask so we can + * notify the channel. */ events = infoPtr->readyEvents & infoPtr->watchEvents; if (events & FD_CLOSE) { /* - * If the socket was closed and the channel is still interested - * in read events, then we need to ensure that we keep polling - * for this event until someone does something with the channel. - * Note that we do this before calling Tcl_NotifyChannel so we don't - * have to watch out for the channel being deleted out from under - * us. This may cause a redundant trip through the event loop, but - * it's simpler than trying to do unwind protection. + * If the socket was closed and the channel is still interested in + * read events, then we need to ensure that we keep polling for this + * event until someone does something with the channel. Note that we + * do this before calling Tcl_NotifyChannel so we don't have to watch + * out for the channel being deleted out from under us. This may cause + * a redundant trip through the event loop, but it's simpler than + * trying to do unwind protection. */ Tcl_Time blockTime = { 0, 0 }; + Tcl_SetMaxBlockTime(&blockTime); mask |= TCL_READABLE|TCL_WRITABLE; } else if (events & FD_READ) { @@ -877,21 +780,21 @@ SocketEventProc(evPtr, flags) /* * We must check to see if data is really available, since someone - * could have consumed the data in the meantime. Turn off async - * notification so select will work correctly. If the socket is - * still readable, notify the channel driver, otherwise reset the - * async select handler and keep waiting. + * could have consumed the data in the meantime. Turn off async + * notification so select will work correctly. If the socket is still + * readable, notify the channel driver, otherwise reset the async + * select handler and keep waiting. */ SendMessage(tsdPtr->hwnd, SOCKET_SELECT, (WPARAM) UNSELECT, (LPARAM) infoPtr); FD_ZERO(&readFds); - FD_SET(infoPtr->socket, &readFds); + FD_SET(infoPtr->sockets->fd, &readFds); timeout.tv_usec = 0; timeout.tv_sec = 0; - - if (winSock.select(0, &readFds, NULL, NULL, &timeout) != 0) { + + if (select(0, &readFds, NULL, NULL, &timeout) != 0) { mask |= TCL_READABLE; } else { infoPtr->readyEvents &= ~(FD_READ); @@ -902,7 +805,10 @@ SocketEventProc(evPtr, flags) if (events & (FD_WRITE | FD_CONNECT)) { mask |= TCL_WRITABLE; if (events & FD_CONNECT && infoPtr->lastError != NO_ERROR) { - /* connect errors should also fire the readable handler. */ + /* + * Connect errors should also fire the readable handler. + */ + mask |= TCL_READABLE; } } @@ -930,12 +836,12 @@ SocketEventProc(evPtr, flags) */ static int -TcpBlockProc(instanceData, mode) - ClientData instanceData; /* The socket to block/un-block. */ - int mode; /* TCL_MODE_BLOCKING or - * TCL_MODE_NONBLOCKING. */ +TcpBlockProc( + ClientData instanceData, /* The socket to block/un-block. */ + int mode) /* TCL_MODE_BLOCKING or + * TCL_MODE_NONBLOCKING. */ { - SocketInfo *infoPtr = (SocketInfo *) instanceData; + SocketInfo *infoPtr = instanceData; if (mode == TCL_MODE_NONBLOCKING) { infoPtr->flags |= SOCKET_ASYNC; @@ -950,9 +856,9 @@ TcpBlockProc(instanceData, mode) * * TcpCloseProc -- * - * This procedure is called by the generic IO level to perform - * channel type specific cleanup on a socket based channel - * when the channel is closed. + * This function is called by the generic IO level to perform channel + * type specific cleanup on a socket based channel when the channel is + * closed. * * Results: * 0 if successful, the value of errno if failed. @@ -965,81 +871,176 @@ TcpBlockProc(instanceData, mode) /* ARGSUSED */ static int -TcpCloseProc(instanceData, interp) - ClientData instanceData; /* The socket to close. */ - Tcl_Interp *interp; /* Unused. */ +TcpCloseProc( + ClientData instanceData, /* The socket to close. */ + Tcl_Interp *interp) /* Unused. */ { - SocketInfo *infoPtr = (SocketInfo *) instanceData; - SocketInfo **nextPtrPtr; + SocketInfo *infoPtr = instanceData; + /* TIP #218 */ int errorCode = 0; - ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); + /* ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); */ /* - * Check that WinSock is initialized; do not call it if not, to - * prevent system crashes. This can happen at exit time if the exit - * handler for WinSock ran before other exit handlers that want to - * use sockets. + * Check that WinSock is initialized; do not call it if not, to prevent + * system crashes. This can happen at exit time if the exit handler for + * WinSock ran before other exit handlers that want to use sockets. */ if (SocketsEnabled()) { - /* - * Clean up the OS socket handle. The default Windows setting - * for a socket is SO_DONTLINGER, which does a graceful shutdown - * in the background. - */ - - if (winSock.closesocket(infoPtr->socket) == SOCKET_ERROR) { - TclWinConvertWSAError((DWORD) winSock.WSAGetLastError()); - errorCode = Tcl_GetErrno(); - } + * Clean up the OS socket handle. The default Windows setting for a + * socket is SO_DONTLINGER, which does a graceful shutdown in the + * background. + */ + + while ( infoPtr->sockets != NULL ) { + TcpFdList *thisfd = infoPtr->sockets; + infoPtr->sockets = thisfd->next; + + if (closesocket(thisfd->fd) == SOCKET_ERROR) { + TclWinConvertError((DWORD) WSAGetLastError()); + errorCode = Tcl_GetErrno(); + } + ckfree(thisfd); + } } /* - * Remove the socket from socketList. + * TIP #218. Removed the code removing the structure from the global + * socket list. This is now done by the thread action callbacks, and only + * there. This happens before this code is called. We can free without + * fear of damaging the list. */ - WaitForSingleObject(tsdPtr->socketListLock, INFINITE); - for (nextPtrPtr = &(tsdPtr->socketList); (*nextPtrPtr) != NULL; - nextPtrPtr = &((*nextPtrPtr)->nextPtr)) { - if ((*nextPtrPtr) == infoPtr) { - (*nextPtrPtr) = infoPtr->nextPtr; - break; + ckfree(infoPtr); + return errorCode; +} + +/* + *---------------------------------------------------------------------- + * + * TcpClose2Proc -- + * + * This function is called by the generic IO level to perform the channel + * type specific part of a half-close: namely, a shutdown() on a socket. + * + * Results: + * 0 if successful, the value of errno if failed. + * + * Side effects: + * Shuts down one side of the socket. + * + *---------------------------------------------------------------------- + */ + +static int +TcpClose2Proc( + ClientData instanceData, /* The socket to close. */ + Tcl_Interp *interp, /* For error reporting. */ + int flags) /* Flags that indicate which side to close. */ +{ + SocketInfo *infoPtr = instanceData; + int errorCode = 0, sd; + + /* + * Shutdown the OS socket handle. + */ + + switch (flags) { + case TCL_CLOSE_READ: + sd = SD_RECEIVE; + break; + case TCL_CLOSE_WRITE: + sd = SD_SEND; + break; + default: + if (interp) { + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "Socket close2proc called bidirectionally", -1)); } + return TCL_ERROR; } - - SetEvent(tsdPtr->socketListLock); - ckfree((char *) infoPtr); + + /* single fd operation: Tcl_OpenTcpServer() does not set TCL_READABLE or + * TCL_WRITABLE so this should never be called for a server socket. */ + if (shutdown(infoPtr->sockets->fd, sd) == SOCKET_ERROR) { + TclWinConvertError((DWORD) WSAGetLastError()); + errorCode = Tcl_GetErrno(); + } + return errorCode; } /* *---------------------------------------------------------------------- * + * AddSocketInfoFd -- + * + * This function adds a SOCKET file descriptor to the 'sockets' linked + * list of a SocketInfo structure. + * + * Results: + * None. + * + * Side effects: + * None, except for allocation of memory. + * + *---------------------------------------------------------------------- + */ + +static void +AddSocketInfoFd( + SocketInfo *infoPtr, + SOCKET socket) +{ + TcpFdList *fds = infoPtr->sockets; + + if ( fds == NULL ) { + /* Add the first FD */ + infoPtr->sockets = ckalloc(sizeof(TcpFdList)); + fds = infoPtr->sockets; + } else { + /* Find end of list and append FD */ + while ( fds->next != NULL ) { + fds = fds->next; + } + + fds->next = ckalloc(sizeof(TcpFdList)); + fds = fds->next; + } + + /* Populate new FD */ + fds->fd = socket; + fds->infoPtr = infoPtr; + fds->next = NULL; +} + + +/* + *---------------------------------------------------------------------- + * * NewSocketInfo -- * - * This function allocates and initializes a new SocketInfo - * structure. + * This function allocates and initializes a new SocketInfo structure. * * Results: * Returns a newly allocated SocketInfo. * * Side effects: - * Adds the socket to the global socket list. + * None, except for allocation of memory. * *---------------------------------------------------------------------- */ static SocketInfo * -NewSocketInfo(socket) - SOCKET socket; +NewSocketInfo( + SOCKET socket) { - SocketInfo *infoPtr; - ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); + SocketInfo *infoPtr = ckalloc(sizeof(SocketInfo)); - infoPtr = (SocketInfo *) ckalloc((unsigned) sizeof(SocketInfo)); + /* ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); */ infoPtr->channel = 0; - infoPtr->socket = socket; + infoPtr->sockets = NULL; infoPtr->flags = 0; infoPtr->watchEvents = 0; infoPtr->readyEvents = 0; @@ -1049,11 +1050,16 @@ NewSocketInfo(socket) infoPtr->acceptProcData = NULL; infoPtr->lastError = 0; - WaitForSingleObject(tsdPtr->socketListLock, INFINITE); - infoPtr->nextPtr = tsdPtr->socketList; - tsdPtr->socketList = infoPtr; - SetEvent(tsdPtr->socketListLock); - + /* + * TIP #218. Removed the code inserting the new structure into the global + * list. This is now handled in the thread action callbacks, and only + * there. + */ + + infoPtr->nextPtr = NULL; + + AddSocketInfoFd(infoPtr, socket); + return infoPtr; } @@ -1062,158 +1068,243 @@ NewSocketInfo(socket) * * CreateSocket -- * - * This function opens a new socket and initializes the - * SocketInfo structure. + * This function opens a new socket and initializes the SocketInfo + * structure. * * Results: * Returns a new SocketInfo, or NULL with an error in interp. * * Side effects: - * Adds a new socket to the socketList. + * None, except for allocation of memory. * *---------------------------------------------------------------------- */ static SocketInfo * -CreateSocket(interp, port, host, server, myaddr, myport, async) - Tcl_Interp *interp; /* For error reporting; can be NULL. */ - int port; /* Port number to open. */ - CONST char *host; /* Name of host on which to open port. */ - int server; /* 1 if socket should be a server socket, - * else 0 for a client socket. */ - CONST char *myaddr; /* Optional client-side address */ - int myport; /* Optional client-side port */ - int async; /* If nonzero, connect client socket +CreateSocket( + Tcl_Interp *interp, /* For error reporting; can be NULL. */ + int port, /* Port number to open. */ + const char *host, /* Name of host on which to open port. */ + int server, /* 1 if socket should be a server socket, else + * 0 for a client socket. */ + const char *myaddr, /* Optional client-side address */ + int myport, /* Optional client-side port */ + int async) /* If nonzero, connect client socket * asynchronously. */ { u_long flag = 1; /* Indicates nonblocking mode. */ - int asyncConnect = 0; /* Will be 1 if async connect is - * in progress. */ - SOCKADDR_IN sockaddr; /* Socket address */ - SOCKADDR_IN mysockaddr; /* Socket address for client */ - SOCKET sock; - SocketInfo *infoPtr; /* The returned value. */ - ThreadSpecificData *tsdPtr = - (ThreadSpecificData *)TclThreadDataKeyGet(&dataKey); + int asyncConnect = 0; /* Will be 1 if async connect is in + * progress. */ + unsigned short chosenport = 0; + struct addrinfo *addrlist = NULL, *addrPtr; + /* Socket address to connect to. */ + struct addrinfo *myaddrlist = NULL, *myaddrPtr; + /* Socket address for our side. */ + const char *errorMsg = NULL; + SOCKET sock = INVALID_SOCKET; + SocketInfo *infoPtr = NULL; /* The returned value. */ + ThreadSpecificData *tsdPtr = TclThreadDataKeyGet(&dataKey); /* - * Check that WinSock is initialized; do not call it if not, to - * prevent system crashes. This can happen at exit time if the exit - * handler for WinSock ran before other exit handlers that want to - * use sockets. + * Check that WinSock is initialized; do not call it if not, to prevent + * system crashes. This can happen at exit time if the exit handler for + * WinSock ran before other exit handlers that want to use sockets. */ if (!SocketsEnabled()) { - return NULL; + return NULL; } - if (! CreateSocketAddress(&sockaddr, host, port)) { - goto error; - } - if ((myaddr != NULL || myport != 0) && - ! CreateSocketAddress(&mysockaddr, myaddr, myport)) { + /* + * Construct the addresses for each end of the socket. + */ + + if (!TclCreateSocketAddress(interp, &addrlist, host, port, server, + &errorMsg)) { goto error; } - - sock = winSock.socket(AF_INET, SOCK_STREAM, 0); - if (sock == INVALID_SOCKET) { + if (!TclCreateSocketAddress(interp, &myaddrlist, myaddr, myport, 1, + &errorMsg)) { goto error; } - /* - * Win-NT has a misfeature that sockets are inherited in child - * processes by default. Turn off the inherit bit. - */ + if (server) { - SetHandleInformation( (HANDLE) sock, HANDLE_FLAG_INHERIT, 0 ); - - /* - * Set kernel space buffering - */ + for (addrPtr = addrlist; addrPtr != NULL; addrPtr = addrPtr->ai_next) { + sock = socket(addrPtr->ai_family, SOCK_STREAM, 0); + if (sock == INVALID_SOCKET) { + TclWinConvertError((DWORD) WSAGetLastError()); + continue; + } - TclSockMinimumBuffers((int) sock, TCP_BUFFER_SIZE); + /* + * Win-NT has a misfeature that sockets are inherited in child + * processes by default. Turn off the inherit bit. + */ - if (server) { - /* - * Bind to the specified port. Note that we must not call setsockopt - * with SO_REUSEADDR because Microsoft allows addresses to be reused - * even if they are still in use. - * - * Bind should not be affected by the socket having already been - * set into nonblocking mode. If there is trouble, this is one place - * to look for bugs. - */ - - if (winSock.bind(sock, (SOCKADDR *) &sockaddr, - sizeof(SOCKADDR_IN)) == SOCKET_ERROR) { - goto error; - } - - /* - * Set the maximum number of pending connect requests to the - * max value allowed on each platform (Win32 and Win32s may be - * different, and there may be differences between TCP/IP stacks). - */ - - if (winSock.listen(sock, SOMAXCONN) == SOCKET_ERROR) { - goto error; - } + SetHandleInformation((HANDLE) sock, HANDLE_FLAG_INHERIT, 0); - /* - * Add this socket to the global list of sockets. - */ + /* + * Set kernel space buffering + */ - infoPtr = NewSocketInfo(sock); + TclSockMinimumBuffers((void *)sock, TCP_BUFFER_SIZE); - /* - * Set up the select mask for connection request events. - */ + /* + * Make sure we use the same port when opening two server sockets + * for IPv4 and IPv6. + * + * As sockaddr_in6 uses the same offset and size for the port + * member as sockaddr_in, we can handle both through the IPv4 API. + */ - infoPtr->selectEvents = FD_ACCEPT; - infoPtr->watchEvents |= FD_ACCEPT; + if (port == 0 && chosenport != 0) { + ((struct sockaddr_in *) addrPtr->ai_addr)->sin_port = + htons(chosenport); + } - } else { + /* + * Bind to the specified port. Note that we must not call + * setsockopt with SO_REUSEADDR because Microsoft allows addresses + * to be reused even if they are still in use. + * + * Bind should not be affected by the socket having already been + * set into nonblocking mode. If there is trouble, this is one + * place to look for bugs. + */ - /* - * Try to bind to a local port, if specified. - */ - - if (myaddr != NULL || myport != 0) { - if (winSock.bind(sock, (SOCKADDR *) &mysockaddr, - sizeof(SOCKADDR_IN)) == SOCKET_ERROR) { - goto error; + if (bind(sock, addrPtr->ai_addr, addrPtr->ai_addrlen) + == SOCKET_ERROR) { + TclWinConvertError((DWORD) WSAGetLastError()); + closesocket(sock); + continue; } - } - - /* - * Set the socket into nonblocking mode if the connect should be - * done in the background. - */ - - if (async) { - if (winSock.ioctlsocket(sock, (long) FIONBIO, &flag) == SOCKET_ERROR) { - goto error; - } - } + if (port == 0 && chosenport == 0) { + address sockname; + socklen_t namelen = sizeof(sockname); - /* - * Attempt to connect to the remote socket. - */ + /* + * Synchronize port numbers when binding to port 0 of multiple + * addresses. + */ - if (winSock.connect(sock, (SOCKADDR *) &sockaddr, - sizeof(SOCKADDR_IN)) == SOCKET_ERROR) { - TclWinConvertWSAError((DWORD) winSock.WSAGetLastError()); - if (Tcl_GetErrno() != EWOULDBLOCK) { - goto error; + if (getsockname(sock, &sockname.sa, &namelen) >= 0) { + chosenport = ntohs(sockname.sa4.sin_port); + } } /* - * The connection is progressing in the background. + * Set the maximum number of pending connect requests to the max + * value allowed on each platform (Win32 and Win32s may be + * different, and there may be differences between TCP/IP stacks). */ - asyncConnect = 1; - } + if (listen(sock, SOMAXCONN) == SOCKET_ERROR) { + TclWinConvertError((DWORD) WSAGetLastError()); + closesocket(sock); + continue; + } + + if (infoPtr == NULL) { + /* + * Add this socket to the global list of sockets. + */ + + infoPtr = NewSocketInfo(sock); + + /* + * Set up the select mask for connection request events. + */ + + infoPtr->selectEvents = FD_ACCEPT; + infoPtr->watchEvents |= FD_ACCEPT; + + } else { + AddSocketInfoFd( infoPtr, sock ); + } + } + } else { + for (addrPtr = addrlist; addrPtr != NULL; + addrPtr = addrPtr->ai_next) { + for (myaddrPtr = myaddrlist; myaddrPtr != NULL; + myaddrPtr = myaddrPtr->ai_next) { + /* + * No need to try combinations of local and remote addresses + * of different families. + */ + + if (myaddrPtr->ai_family != addrPtr->ai_family) { + continue; + } + + sock = socket(myaddrPtr->ai_family, SOCK_STREAM, 0); + if (sock == INVALID_SOCKET) { + TclWinConvertError((DWORD) WSAGetLastError()); + continue; + } + /* + * Win-NT has a misfeature that sockets are inherited in child + * processes by default. Turn off the inherit bit. + */ + + SetHandleInformation((HANDLE) sock, HANDLE_FLAG_INHERIT, 0); + + /* + * Set kernel space buffering + */ + + TclSockMinimumBuffers((void *) sock, TCP_BUFFER_SIZE); + + /* + * Try to bind to a local port. + */ + + if (bind(sock, myaddrPtr->ai_addr, myaddrPtr->ai_addrlen) + == SOCKET_ERROR) { + TclWinConvertError((DWORD) WSAGetLastError()); + goto looperror; + } + /* + * Set the socket into nonblocking mode if the connect should + * be done in the background. + */ + if (async && ioctlsocket(sock, (long) FIONBIO, &flag) + == SOCKET_ERROR) { + TclWinConvertError((DWORD) WSAGetLastError()); + goto looperror; + } + + /* + * Attempt to connect to the remote socket. + */ + + if (connect(sock, addrPtr->ai_addr, addrPtr->ai_addrlen) + == SOCKET_ERROR) { + DWORD error = (DWORD) WSAGetLastError(); + if (error != WSAEWOULDBLOCK) { + TclWinConvertError(error); + goto looperror; + } + + /* + * The connection is progressing in the background. + */ + + asyncConnect = 1; + } + goto connected; + + looperror: + if (sock != INVALID_SOCKET) { + closesocket(sock); + sock = INVALID_SOCKET; + } + } + } + goto error; + + connected: /* * Add this socket to the global list of sockets. */ @@ -1221,7 +1312,7 @@ CreateSocket(interp, port, host, server, myaddr, myport, async) infoPtr = NewSocketInfo(sock); /* - * Set up the select mask for read/write events. If the connect + * Set up the select mask for read/write events. If the connect * attempt has not completed, include connect events. */ @@ -1232,25 +1323,35 @@ CreateSocket(interp, port, host, server, myaddr, myport, async) } } + error: + if (addrlist != NULL) { + freeaddrinfo(addrlist); + } + if (myaddrlist != NULL) { + freeaddrinfo(myaddrlist); + } + /* - * Register for interest in events in the select mask. Note that this + * Register for interest in events in the select mask. Note that this * automatically places the socket into non-blocking mode. */ - winSock.ioctlsocket(sock, (long) FIONBIO, &flag); - SendMessage(tsdPtr->hwnd, SOCKET_SELECT, - (WPARAM) SELECT, (LPARAM) infoPtr); + if (infoPtr != NULL) { + ioctlsocket(sock, (long) FIONBIO, &flag); + SendMessage(tsdPtr->hwnd, SOCKET_SELECT, (WPARAM) SELECT, + (LPARAM) infoPtr); - return infoPtr; + return infoPtr; + } -error: - TclWinConvertWSAError((DWORD) winSock.WSAGetLastError()); if (interp != NULL) { - Tcl_AppendResult(interp, "couldn't open socket: ", - Tcl_PosixError(interp), (char *) NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "couldn't open socket: %s", + (errorMsg ? errorMsg : Tcl_PosixError(interp)))); } + if (sock != INVALID_SOCKET) { - winSock.closesocket(sock); + closesocket(sock); } return NULL; } @@ -1258,79 +1359,6 @@ error: /* *---------------------------------------------------------------------- * - * CreateSocketAddress -- - * - * This function initializes a sockaddr structure for a host and port. - * - * Results: - * 1 if the host was valid, 0 if the host could not be converted to - * an IP address. - * - * Side effects: - * Fills in the *sockaddrPtr structure. - * - *---------------------------------------------------------------------- - */ - -static int -CreateSocketAddress(sockaddrPtr, host, port) - LPSOCKADDR_IN sockaddrPtr; /* Socket address */ - CONST char *host; /* Host. NULL implies INADDR_ANY */ - int port; /* Port number */ -{ - struct hostent *hostent; /* Host database entry */ - struct in_addr addr; /* For 64/32 bit madness */ - - /* - * Check that WinSock is initialized; do not call it if not, to - * prevent system crashes. This can happen at exit time if the exit - * handler for WinSock ran before other exit handlers that want to - * use sockets. - */ - - if (!SocketsEnabled()) { - Tcl_SetErrno(EFAULT); - return 0; - } - - ZeroMemory(sockaddrPtr, sizeof(SOCKADDR_IN)); - sockaddrPtr->sin_family = AF_INET; - sockaddrPtr->sin_port = winSock.htons((u_short) (port & 0xFFFF)); - if (host == NULL) { - addr.s_addr = INADDR_ANY; - } else { - addr.s_addr = winSock.inet_addr(host); - if (addr.s_addr == INADDR_NONE) { - hostent = winSock.gethostbyname(host); - if (hostent != NULL) { - memcpy(&addr, hostent->h_addr, (size_t) hostent->h_length); - } else { -#ifdef EHOSTUNREACH - Tcl_SetErrno(EHOSTUNREACH); -#else -#ifdef ENXIO - Tcl_SetErrno(ENXIO); -#endif -#endif - return 0; /* Error. */ - } - } - } - - /* - * NOTE: On 64 bit machines the assignment below is rumored to not - * do the right thing. Please report errors related to this if you - * observe incorrect behavior on 64 bit machines such as DEC Alphas. - * Should we modify this code to do an explicit memcpy? - */ - - sockaddrPtr->sin_addr.s_addr = addr.s_addr; - return 1; /* Success. */ -} - -/* - *---------------------------------------------------------------------- - * * WaitForSocketEvent -- * * Waits until one of the specified events occurs on a socket. @@ -1346,34 +1374,31 @@ CreateSocketAddress(sockaddrPtr, host, port) */ static int -WaitForSocketEvent(infoPtr, events, errorCodePtr) - SocketInfo *infoPtr; /* Information about this socket. */ - int events; /* Events to look for. */ - int *errorCodePtr; /* Where to store errors? */ +WaitForSocketEvent( + SocketInfo *infoPtr, /* Information about this socket. */ + int events, /* Events to look for. */ + int *errorCodePtr) /* Where to store errors? */ { int result = 1; int oldMode; - ThreadSpecificData *tsdPtr = - (ThreadSpecificData *)TclThreadDataKeyGet(&dataKey); + ThreadSpecificData *tsdPtr = TclThreadDataKeyGet(&dataKey); /* * Be sure to disable event servicing so we are truly modal. */ oldMode = Tcl_SetServiceMode(TCL_SERVICE_NONE); - + /* * Reset WSAAsyncSelect so we have a fresh set of events pending. */ - SendMessage(tsdPtr->hwnd, SOCKET_SELECT, - (WPARAM) UNSELECT, (LPARAM) infoPtr); - - SendMessage(tsdPtr->hwnd, SOCKET_SELECT, - (WPARAM) SELECT, (LPARAM) infoPtr); + SendMessage(tsdPtr->hwnd, SOCKET_SELECT, (WPARAM) UNSELECT, + (LPARAM) infoPtr); + SendMessage(tsdPtr->hwnd, SOCKET_SELECT, (WPARAM) SELECT, + (LPARAM) infoPtr); while (1) { - if (infoPtr->lastError) { *errorCodePtr = infoPtr->lastError; result = 0; @@ -1389,9 +1414,10 @@ WaitForSocketEvent(infoPtr, events, errorCodePtr) /* * Wait until something happens. */ + WaitForSingleObject(tsdPtr->readyEvent, INFINITE); } - + (void) Tcl_SetServiceMode(oldMode); return result; } @@ -1404,8 +1430,8 @@ WaitForSocketEvent(infoPtr, events, errorCodePtr) * Opens a TCP client socket and creates a channel around it. * * Results: - * The channel or NULL if failed. An error message is returned - * in the interpreter on failure. + * The channel or NULL if failed. An error message is returned in the + * interpreter on failure. * * Side effects: * Opens a client socket and creates a new channel. @@ -1414,14 +1440,14 @@ WaitForSocketEvent(infoPtr, events, errorCodePtr) */ Tcl_Channel -Tcl_OpenTcpClient(interp, port, host, myaddr, myport, async) - Tcl_Interp *interp; /* For error reporting; can be NULL. */ - int port; /* Port number to open. */ - CONST char *host; /* Host on which to open port. */ - CONST char *myaddr; /* Client-side address */ - int myport; /* Client-side port */ - int async; /* If nonzero, should connect - * client socket asynchronously. */ +Tcl_OpenTcpClient( + Tcl_Interp *interp, /* For error reporting; can be NULL. */ + int port, /* Port number to open. */ + const char *host, /* Host on which to open port. */ + const char *myaddr, /* Client-side address */ + int myport, /* Client-side port */ + int async) /* If nonzero, should connect client socket + * asynchronously. */ { SocketInfo *infoPtr; char channelName[16 + TCL_INTEGER_SPACE]; @@ -1439,19 +1465,18 @@ Tcl_OpenTcpClient(interp, port, host, myaddr, myport, async) return NULL; } - wsprintfA(channelName, "sock%d", infoPtr->socket); + sprintf(channelName, "sock%" TCL_I_MODIFIER "u", (size_t) infoPtr->sockets->fd); infoPtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName, - (ClientData) infoPtr, (TCL_READABLE | TCL_WRITABLE)); - if (Tcl_SetChannelOption(interp, infoPtr->channel, "-translation", - "auto crlf") == TCL_ERROR) { - Tcl_Close((Tcl_Interp *) NULL, infoPtr->channel); - return (Tcl_Channel) NULL; - } - if (Tcl_SetChannelOption(NULL, infoPtr->channel, "-eofchar", "") - == TCL_ERROR) { - Tcl_Close((Tcl_Interp *) NULL, infoPtr->channel); - return (Tcl_Channel) NULL; + infoPtr, (TCL_READABLE | TCL_WRITABLE)); + if (TCL_ERROR == Tcl_SetChannelOption(NULL, infoPtr->channel, + "-translation", "auto crlf")) { + Tcl_Close(NULL, infoPtr->channel); + return NULL; + } else if (TCL_ERROR == Tcl_SetChannelOption(NULL, infoPtr->channel, + "-eofchar", "")) { + Tcl_Close(NULL, infoPtr->channel); + return NULL; } return infoPtr->channel; } @@ -1475,8 +1500,8 @@ Tcl_OpenTcpClient(interp, port, host, myaddr, myport, async) */ Tcl_Channel -Tcl_MakeTcpClientChannel(sock) - ClientData sock; /* The socket to wrap up into a channel. */ +Tcl_MakeTcpClientChannel( + ClientData sock) /* The socket to wrap up into a channel. */ { SocketInfo *infoPtr; char channelName[16 + TCL_INTEGER_SPACE]; @@ -1486,13 +1511,13 @@ Tcl_MakeTcpClientChannel(sock) return NULL; } - tsdPtr = (ThreadSpecificData *)TclThreadDataKeyGet(&dataKey); + tsdPtr = TclThreadDataKeyGet(&dataKey); /* * Set kernel space buffering and non-blocking. */ - TclSockMinimumBuffers((int) sock, TCP_BUFFER_SIZE); + TclSockMinimumBuffers(sock, TCP_BUFFER_SIZE); infoPtr = NewSocketInfo((SOCKET) sock); @@ -1501,12 +1526,11 @@ Tcl_MakeTcpClientChannel(sock) */ infoPtr->selectEvents = FD_READ | FD_CLOSE | FD_WRITE; - SendMessage(tsdPtr->hwnd, SOCKET_SELECT, - (WPARAM) SELECT, (LPARAM) infoPtr); + SendMessage(tsdPtr->hwnd, SOCKET_SELECT, (WPARAM)SELECT, (LPARAM)infoPtr); - wsprintfA(channelName, "sock%d", infoPtr->socket); + sprintf(channelName, "sock%" TCL_I_MODIFIER "u", (size_t) infoPtr->sockets->fd); infoPtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName, - (ClientData) infoPtr, (TCL_READABLE | TCL_WRITABLE)); + infoPtr, (TCL_READABLE | TCL_WRITABLE)); Tcl_SetChannelOption(NULL, infoPtr->channel, "-translation", "auto crlf"); return infoPtr->channel; } @@ -1519,8 +1543,8 @@ Tcl_MakeTcpClientChannel(sock) * Opens a TCP server socket and creates a channel around it. * * Results: - * The channel or NULL if failed. An error message is returned - * in the interpreter on failure. + * The channel or NULL if failed. An error message is returned in the + * interpreter on failure. * * Side effects: * Opens a server socket and creates a new channel. @@ -1529,14 +1553,14 @@ Tcl_MakeTcpClientChannel(sock) */ Tcl_Channel -Tcl_OpenTcpServer(interp, port, host, acceptProc, acceptProcData) - Tcl_Interp *interp; /* For error reporting - may be - * NULL. */ - int port; /* Port number to open. */ - CONST char *host; /* Name of local host. */ - Tcl_TcpAcceptProc *acceptProc; /* Callback for accepting connections - * from new clients. */ - ClientData acceptProcData; /* Data for the callback. */ +Tcl_OpenTcpServer( + Tcl_Interp *interp, /* For error reporting - may be NULL. */ + int port, /* Port number to open. */ + const char *host, /* Name of local host. */ + Tcl_TcpAcceptProc *acceptProc, + /* Callback for accepting connections from new + * clients. */ + ClientData acceptProcData) /* Data for the callback. */ { SocketInfo *infoPtr; char channelName[16 + TCL_INTEGER_SPACE]; @@ -1557,14 +1581,14 @@ Tcl_OpenTcpServer(interp, port, host, acceptProc, acceptProcData) infoPtr->acceptProc = acceptProc; infoPtr->acceptProcData = acceptProcData; - wsprintfA(channelName, "sock%d", infoPtr->socket); + sprintf(channelName, "sock%" TCL_I_MODIFIER "u", (size_t) infoPtr->sockets->fd); infoPtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName, - (ClientData) infoPtr, 0); + infoPtr, 0); if (Tcl_SetChannelOption(interp, infoPtr->channel, "-eofchar", "") == TCL_ERROR) { - Tcl_Close((Tcl_Interp *) NULL, infoPtr->channel); - return (Tcl_Channel) NULL; + Tcl_Close(NULL, infoPtr->channel); + return NULL; } return infoPtr->channel; @@ -1574,9 +1598,10 @@ Tcl_OpenTcpServer(interp, port, host, acceptProc, acceptProcData) *---------------------------------------------------------------------- * * TcpAccept -- - * Accept a TCP socket connection. This is called by - * SocketEventProc and it in turns calls the registered accept - * procedure. + * + * Creates a channel for a newly accepted socket connection. This is + * called by SocketEventProc and it in turns calls the registered + * accept function. * * Results: * None. @@ -1588,56 +1613,24 @@ Tcl_OpenTcpServer(interp, port, host, acceptProc, acceptProcData) */ static void -TcpAccept(infoPtr) - SocketInfo *infoPtr; /* Socket to accept. */ +TcpAccept( + TcpFdList *fds, /* Server socket that accepted newSocket. */ + SOCKET newSocket, /* Newly accepted socket. */ + address addr) /* Address of new socket. */ { - SOCKET newSocket; SocketInfo *newInfoPtr; - SOCKADDR_IN addr; - int len; + SocketInfo *infoPtr = fds->infoPtr; + int len = sizeof(addr); char channelName[16 + TCL_INTEGER_SPACE]; - ThreadSpecificData *tsdPtr = - (ThreadSpecificData *)TclThreadDataKeyGet(&dataKey); - - /* - * Accept the incoming connection request. - */ - - len = sizeof(SOCKADDR_IN); - - newSocket = winSock.accept(infoPtr->socket, (SOCKADDR *)&addr, - &len); - - /* - * Clear the ready mask so we can detect the next connection request. - * Note that connection requests are level triggered, so if there is - * a request already pending, a new event will be generated. - */ - - if (newSocket == INVALID_SOCKET) { - infoPtr->acceptEventCount = 0; - infoPtr->readyEvents &= ~(FD_ACCEPT); - return; - } - - /* - * It is possible that more than one FD_ACCEPT has been sent, so an extra - * count must be kept. Decrement the count, and reset the readyEvent bit - * if the count is no longer > 0. - */ - - infoPtr->acceptEventCount--; - - if (infoPtr->acceptEventCount <= 0) { - infoPtr->readyEvents &= ~(FD_ACCEPT); - } + char host[NI_MAXHOST], port[NI_MAXSERV]; + ThreadSpecificData *tsdPtr = TclThreadDataKeyGet(&dataKey); /* - * Win-NT has a misfeature that sockets are inherited in child - * processes by default. Turn off the inherit bit. + * Win-NT has a misfeature that sockets are inherited in child processes + * by default. Turn off the inherit bit. */ - SetHandleInformation( (HANDLE) newSocket, HANDLE_FLAG_INHERIT, 0 ); + SetHandleInformation((HANDLE) newSocket, HANDLE_FLAG_INHERIT, 0); /* * Add this socket to the global list of sockets. @@ -1650,32 +1643,32 @@ TcpAccept(infoPtr) */ newInfoPtr->selectEvents = (FD_READ | FD_WRITE | FD_CLOSE); - SendMessage(tsdPtr->hwnd, SOCKET_SELECT, - (WPARAM) SELECT, (LPARAM) newInfoPtr); + SendMessage(tsdPtr->hwnd, SOCKET_SELECT, (WPARAM) SELECT, + (LPARAM) newInfoPtr); - wsprintfA(channelName, "sock%d", newInfoPtr->socket); + sprintf(channelName, "sock%" TCL_I_MODIFIER "u", (size_t) newInfoPtr->sockets->fd); newInfoPtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName, - (ClientData) newInfoPtr, (TCL_READABLE | TCL_WRITABLE)); + newInfoPtr, (TCL_READABLE | TCL_WRITABLE)); if (Tcl_SetChannelOption(NULL, newInfoPtr->channel, "-translation", "auto crlf") == TCL_ERROR) { - Tcl_Close((Tcl_Interp *) NULL, newInfoPtr->channel); + Tcl_Close(NULL, newInfoPtr->channel); return; } if (Tcl_SetChannelOption(NULL, newInfoPtr->channel, "-eofchar", "") == TCL_ERROR) { - Tcl_Close((Tcl_Interp *) NULL, newInfoPtr->channel); + Tcl_Close(NULL, newInfoPtr->channel); return; } /* - * Invoke the accept callback procedure. + * Invoke the accept callback function. */ if (infoPtr->acceptProc != NULL) { - (infoPtr->acceptProc) (infoPtr->acceptProcData, - newInfoPtr->channel, - winSock.inet_ntoa(addr.sin_addr), - winSock.ntohs(addr.sin_port)); + getnameinfo(&(addr.sa), len, host, sizeof(host), port, sizeof(port), + NI_NUMERICHOST|NI_NUMERICSERV); + infoPtr->acceptProc(infoPtr->acceptProcData, newInfoPtr->channel, + host, atoi(port)); } } @@ -1684,8 +1677,8 @@ TcpAccept(infoPtr) * * TcpInputProc -- * - * This procedure is called by the generic IO level to read data from - * a socket based channel. + * This function is called by the generic IO level to read data from a + * socket based channel. * * Results: * The number of bytes read or -1 on error. @@ -1697,35 +1690,33 @@ TcpAccept(infoPtr) */ static int -TcpInputProc(instanceData, buf, toRead, errorCodePtr) - ClientData instanceData; /* The socket state. */ - char *buf; /* Where to store data. */ - int toRead; /* Maximum number of bytes to read. */ - int *errorCodePtr; /* Where to store error codes. */ +TcpInputProc( + ClientData instanceData, /* The socket state. */ + char *buf, /* Where to store data. */ + int toRead, /* Maximum number of bytes to read. */ + int *errorCodePtr) /* Where to store error codes. */ { - SocketInfo *infoPtr = (SocketInfo *) instanceData; + SocketInfo *infoPtr = instanceData; int bytesRead; DWORD error; - ThreadSpecificData *tsdPtr = - (ThreadSpecificData *)TclThreadDataKeyGet(&dataKey); - + ThreadSpecificData *tsdPtr = TclThreadDataKeyGet(&dataKey); + *errorCodePtr = 0; /* - * Check that WinSock is initialized; do not call it if not, to - * prevent system crashes. This can happen at exit time if the exit - * handler for WinSock ran before other exit handlers that want to - * use sockets. + * Check that WinSock is initialized; do not call it if not, to prevent + * system crashes. This can happen at exit time if the exit handler for + * WinSock ran before other exit handlers that want to use sockets. */ if (!SocketsEnabled()) { - *errorCodePtr = EFAULT; - return -1; + *errorCodePtr = EFAULT; + return -1; } /* - * First check to see if EOF was already detected, to prevent - * calling the socket stack after the first time EOF is detected. + * First check to see if EOF was already detected, to prevent calling the + * socket stack after the first time EOF is detected. */ if (infoPtr->flags & SOCKET_EOF) { @@ -1737,72 +1728,84 @@ TcpInputProc(instanceData, buf, toRead, errorCodePtr) */ if ((infoPtr->flags & SOCKET_ASYNC_CONNECT) - && ! WaitForSocketEvent(infoPtr, FD_CONNECT, errorCodePtr)) { + && !WaitForSocketEvent(infoPtr, FD_CONNECT, errorCodePtr)) { return -1; } - + /* - * No EOF, and it is connected, so try to read more from the socket. - * Note that we clear the FD_READ bit because read events are level - * triggered so a new event will be generated if there is still data - * available to be read. We have to simulate blocking behavior here - * since we are always using non-blocking sockets. + * No EOF, and it is connected, so try to read more from the socket. Note + * that we clear the FD_READ bit because read events are level triggered + * so a new event will be generated if there is still data available to be + * read. We have to simulate blocking behavior here since we are always + * using non-blocking sockets. */ while (1) { SendMessage(tsdPtr->hwnd, SOCKET_SELECT, (WPARAM) UNSELECT, (LPARAM) infoPtr); - bytesRead = winSock.recv(infoPtr->socket, buf, toRead, 0); + /* single fd operation: this proc is only called for a connected socket. */ + bytesRead = recv(infoPtr->sockets->fd, buf, toRead, 0); infoPtr->readyEvents &= ~(FD_READ); - + /* * Check for end-of-file condition or successful read. */ - + if (bytesRead == 0) { infoPtr->flags |= SOCKET_EOF; } if (bytesRead != SOCKET_ERROR) { break; } - + /* - * If an error occurs after the FD_CLOSE has arrived, - * then ignore the error and report an EOF. + * If an error occurs after the FD_CLOSE has arrived, then ignore the + * error and report an EOF. */ - + if (infoPtr->readyEvents & FD_CLOSE) { infoPtr->flags |= SOCKET_EOF; bytesRead = 0; break; } - + + error = WSAGetLastError(); + + /* + * If an RST comes, then ignore the error and report an EOF just like + * on unix. + */ + + if (error == WSAECONNRESET) { + infoPtr->flags |= SOCKET_EOF; + bytesRead = 0; + break; + } + /* * Check for error condition or underflow in non-blocking case. */ - - error = winSock.WSAGetLastError(); + if ((infoPtr->flags & SOCKET_ASYNC) || (error != WSAEWOULDBLOCK)) { - TclWinConvertWSAError(error); + TclWinConvertError(error); *errorCodePtr = Tcl_GetErrno(); bytesRead = -1; break; } /* - * In the blocking case, wait until the file becomes readable - * or closed and try again. + * In the blocking case, wait until the file becomes readable or + * closed and try again. */ if (!WaitForSocketEvent(infoPtr, FD_READ|FD_CLOSE, errorCodePtr)) { bytesRead = -1; break; - } + } } - - SendMessage(tsdPtr->hwnd, SOCKET_SELECT, - (WPARAM) SELECT, (LPARAM) infoPtr); - + + SendMessage(tsdPtr->hwnd, SOCKET_SELECT, (WPARAM)SELECT, (LPARAM)infoPtr); + return bytesRead; } @@ -1811,8 +1814,8 @@ TcpInputProc(instanceData, buf, toRead, errorCodePtr) * * TcpOutputProc -- * - * This procedure is called by the generic IO level to write data - * to a socket based channel. + * This function is called by the generic IO level to write data to a + * socket based channel. * * Results: * The number of bytes written or -1 on failure. @@ -1824,38 +1827,36 @@ TcpInputProc(instanceData, buf, toRead, errorCodePtr) */ static int -TcpOutputProc(instanceData, buf, toWrite, errorCodePtr) - ClientData instanceData; /* The socket state. */ - CONST char *buf; /* Where to get data. */ - int toWrite; /* Maximum number of bytes to write. */ - int *errorCodePtr; /* Where to store error codes. */ +TcpOutputProc( + ClientData instanceData, /* The socket state. */ + const char *buf, /* Where to get data. */ + int toWrite, /* Maximum number of bytes to write. */ + int *errorCodePtr) /* Where to store error codes. */ { - SocketInfo *infoPtr = (SocketInfo *) instanceData; + SocketInfo *infoPtr = instanceData; int bytesWritten; DWORD error; - ThreadSpecificData *tsdPtr = - (ThreadSpecificData *)TclThreadDataKeyGet(&dataKey); + ThreadSpecificData *tsdPtr = TclThreadDataKeyGet(&dataKey); *errorCodePtr = 0; /* - * Check that WinSock is initialized; do not call it if not, to - * prevent system crashes. This can happen at exit time if the exit - * handler for WinSock ran before other exit handlers that want to - * use sockets. + * Check that WinSock is initialized; do not call it if not, to prevent + * system crashes. This can happen at exit time if the exit handler for + * WinSock ran before other exit handlers that want to use sockets. */ if (!SocketsEnabled()) { - *errorCodePtr = EFAULT; - return -1; + *errorCodePtr = EFAULT; + return -1; } /* * Check to see if the socket is connected before trying to write. */ - + if ((infoPtr->flags & SOCKET_ASYNC_CONNECT) - && ! WaitForSocketEvent(infoPtr, FD_CONNECT, errorCodePtr)) { + && !WaitForSocketEvent(infoPtr, FD_CONNECT, errorCodePtr)) { return -1; } @@ -1863,46 +1864,47 @@ TcpOutputProc(instanceData, buf, toWrite, errorCodePtr) SendMessage(tsdPtr->hwnd, SOCKET_SELECT, (WPARAM) UNSELECT, (LPARAM) infoPtr); - bytesWritten = winSock.send(infoPtr->socket, buf, toWrite, 0); + /* single fd operation: this proc is only called for a connected socket. */ + bytesWritten = send(infoPtr->sockets->fd, buf, toWrite, 0); if (bytesWritten != SOCKET_ERROR) { /* - * Since Windows won't generate a new write event until we hit - * an overflow condition, we need to force the event loop to - * poll until the condition changes. + * Since Windows won't generate a new write event until we hit an + * overflow condition, we need to force the event loop to poll + * until the condition changes. */ if (infoPtr->watchEvents & FD_WRITE) { Tcl_Time blockTime = { 0, 0 }; Tcl_SetMaxBlockTime(&blockTime); - } + } break; } - + /* - * Check for error condition or overflow. In the event of overflow, we + * Check for error condition or overflow. In the event of overflow, we * need to clear the FD_WRITE flag so we can detect the next writable - * event. Note that Windows only sends a new writable event after a + * event. Note that Windows only sends a new writable event after a * send fails with WSAEWOULDBLOCK. */ - error = winSock.WSAGetLastError(); + error = WSAGetLastError(); if (error == WSAEWOULDBLOCK) { infoPtr->readyEvents &= ~(FD_WRITE); if (infoPtr->flags & SOCKET_ASYNC) { *errorCodePtr = EWOULDBLOCK; bytesWritten = -1; break; - } + } } else { - TclWinConvertWSAError(error); + TclWinConvertError(error); *errorCodePtr = Tcl_GetErrno(); bytesWritten = -1; break; } /* - * In the blocking case, wait until the file becomes writable - * or closed and try again. + * In the blocking case, wait until the file becomes writable or + * closed and try again. */ if (!WaitForSocketEvent(infoPtr, FD_WRITE|FD_CLOSE, errorCodePtr)) { @@ -1911,9 +1913,8 @@ TcpOutputProc(instanceData, buf, toWrite, errorCodePtr) } } - SendMessage(tsdPtr->hwnd, SOCKET_SELECT, - (WPARAM) SELECT, (LPARAM) infoPtr); - + SendMessage(tsdPtr->hwnd, SOCKET_SELECT, (WPARAM)SELECT, (LPARAM)infoPtr); + return bytesWritten; } @@ -1934,65 +1935,75 @@ TcpOutputProc(instanceData, buf, toWrite, errorCodePtr) */ static int -TcpSetOptionProc ( +TcpSetOptionProc( ClientData instanceData, /* Socket state. */ Tcl_Interp *interp, /* For error reporting - can be NULL. */ - CONST char *optionName, /* Name of the option to set. */ - CONST char *value) /* New value for option. */ + const char *optionName, /* Name of the option to set. */ + const char *value) /* New value for option. */ { - SocketInfo *infoPtr; +#ifdef TCL_FEATURE_KEEPALIVE_NAGLE + SocketInfo *infoPtr = instanceData; SOCKET sock; -/* - BOOL val = FALSE; - int boolVar, rtn; -*/ +#endif /*TCL_FEATURE_KEEPALIVE_NAGLE*/ + /* - * Check that WinSock is initialized; do not call it if not, to - * prevent system crashes. This can happen at exit time if the exit - * handler for WinSock ran before other exit handlers that want to - * use sockets. + * Check that WinSock is initialized; do not call it if not, to prevent + * system crashes. This can happen at exit time if the exit handler for + * WinSock ran before other exit handlers that want to use sockets. */ if (!SocketsEnabled()) { if (interp) { - Tcl_AppendResult(interp, "winsock is not initialized", NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "winsock is not initialized", -1)); } - return TCL_ERROR; + return TCL_ERROR; } - infoPtr = (SocketInfo *) instanceData; - sock = infoPtr->socket; +#ifdef TCL_FEATURE_KEEPALIVE_NAGLE + #error "TCL_FEATURE_KEEPALIVE_NAGLE not reviewed for whether to treat infoPtr->sockets as single fd or list" + sock = infoPtr->sockets->fd; + + if (!strcasecmp(optionName, "-keepalive")) { + BOOL val = FALSE; + int boolVar, rtn; -/* - if (!stricmp(optionName, "-keepalive")) { if (Tcl_GetBoolean(interp, value, &boolVar) != TCL_OK) { return TCL_ERROR; } - if (boolVar) val = TRUE; - rtn = winSock.setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, + if (boolVar) { + val = TRUE; + } + rtn = setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, (const char *) &val, sizeof(BOOL)); if (rtn != 0) { - TclWinConvertWSAError(winSock.WSAGetLastError()); + TclWinConvertError(WSAGetLastError()); if (interp) { - Tcl_AppendResult(interp, "couldn't set socket option: ", - Tcl_PosixError(interp), NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "couldn't set socket option: %s", + Tcl_PosixError(interp))); } return TCL_ERROR; } return TCL_OK; + } else if (!strcasecmp(optionName, "-nagle")) { + BOOL val = FALSE; + int boolVar, rtn; - } else if (!stricmp(optionName, "-nagle")) { if (Tcl_GetBoolean(interp, value, &boolVar) != TCL_OK) { return TCL_ERROR; } - if (!boolVar) val = TRUE; - rtn = winSock.setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, + if (!boolVar) { + val = TRUE; + } + rtn = setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (const char *) &val, sizeof(BOOL)); if (rtn != 0) { - TclWinConvertWSAError(winSock.WSAGetLastError()); + TclWinConvertError(WSAGetLastError()); if (interp) { - Tcl_AppendResult(interp, "couldn't set socket option: ", - Tcl_PosixError(interp), NULL); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "couldn't set socket option: %s", + Tcl_PosixError(interp))); } return TCL_ERROR; } @@ -2000,8 +2011,9 @@ TcpSetOptionProc ( } return Tcl_BadChannelOption(interp, optionName, "keepalive nagle"); -*/ +#else return Tcl_BadChannelOption(interp, optionName, ""); +#endif /*TCL_FEATURE_KEEPALIVE_NAGLE*/ } /* @@ -2009,15 +2021,14 @@ TcpSetOptionProc ( * * TcpGetOptionProc -- * - * Computes an option value for a TCP socket based channel, or a - * list of all options and their values. + * Computes an option value for a TCP socket based channel, or a list of + * all options and their values. * * Note: This code is based on code contributed by John Haxby. * * Results: - * A standard Tcl result. The value of the specified option or a - * list of all options and their values is returned in the - * supplied DString. + * A standard Tcl result. The value of the specified option or a list of + * all options and their values is returned in the supplied DString. * * Side effects: * None. @@ -2026,43 +2037,39 @@ TcpSetOptionProc ( */ static int -TcpGetOptionProc(instanceData, interp, optionName, dsPtr) - ClientData instanceData; /* Socket state. */ - Tcl_Interp *interp; /* For error reporting - can be NULL */ - CONST char *optionName; /* Name of the option to - * retrieve the value for, or - * NULL to get all options and - * their values. */ - Tcl_DString *dsPtr; /* Where to store the computed - * value; initialized by caller. */ +TcpGetOptionProc( + ClientData instanceData, /* Socket state. */ + Tcl_Interp *interp, /* For error reporting - can be NULL */ + const char *optionName, /* Name of the option to retrieve the value + * for, or NULL to get all options and their + * values. */ + Tcl_DString *dsPtr) /* Where to store the computed value; + * initialized by caller. */ { - SocketInfo *infoPtr; - SOCKADDR_IN sockname; - SOCKADDR_IN peername; - struct hostent *hostEntPtr; + SocketInfo *infoPtr = instanceData; + char host[NI_MAXHOST], port[NI_MAXSERV]; SOCKET sock; - int size = sizeof(SOCKADDR_IN); size_t len = 0; - char buf[TCL_INTEGER_SPACE]; + int reverseDNS = 0; +#define SUPPRESS_RDNS_VAR "::tcl::unsupported::noReverseDNS" /* - * Check that WinSock is initialized; do not call it if not, to - * prevent system crashes. This can happen at exit time if the exit - * handler for WinSock ran before other exit handlers that want to - * use sockets. + * Check that WinSock is initialized; do not call it if not, to prevent + * system crashes. This can happen at exit time if the exit handler for + * WinSock ran before other exit handlers that want to use sockets. */ if (!SocketsEnabled()) { if (interp) { - Tcl_AppendResult(interp, "winsock is not initialized", NULL); + Tcl_SetObjResult(interp, Tcl_NewStringObj( + "winsock is not initialized", -1)); } - return TCL_ERROR; + return TCL_ERROR; } - - infoPtr = (SocketInfo *) instanceData; - sock = (int) infoPtr->socket; - if (optionName != (char *) NULL) { - len = strlen(optionName); + + sock = infoPtr->sockets->fd; + if (optionName != NULL) { + len = strlen(optionName); } if ((len > 1) && (optionName[1] == 'e') && @@ -2070,154 +2077,178 @@ TcpGetOptionProc(instanceData, interp, optionName, dsPtr) int optlen; DWORD err; int ret; - + optlen = sizeof(int); ret = TclWinGetSockOpt(sock, SOL_SOCKET, SO_ERROR, (char *)&err, &optlen); if (ret == SOCKET_ERROR) { - err = winSock.WSAGetLastError(); + err = WSAGetLastError(); } if (err) { - TclWinConvertWSAError(err); + TclWinConvertError(err); Tcl_DStringAppend(dsPtr, Tcl_ErrnoMsg(Tcl_GetErrno()), -1); } return TCL_OK; } - if ((len == 0) || - ((len > 1) && (optionName[1] == 'p') && - (strncmp(optionName, "-peername", len) == 0))) { - if (winSock.getpeername(sock, (LPSOCKADDR) &peername, &size) - == 0) { - if (len == 0) { - Tcl_DStringAppendElement(dsPtr, "-peername"); - Tcl_DStringStartSublist(dsPtr); - } - Tcl_DStringAppendElement(dsPtr, - winSock.inet_ntoa(peername.sin_addr)); - - if (peername.sin_addr.s_addr == 0) { - hostEntPtr = (struct hostent *) NULL; + if (interp != NULL && Tcl_GetVar(interp, SUPPRESS_RDNS_VAR, 0) != NULL) { + reverseDNS = NI_NUMERICHOST; + } + + if ((len == 0) || ((len > 1) && (optionName[1] == 'p') && + (strncmp(optionName, "-peername", len) == 0))) { + address peername; + socklen_t size = sizeof(peername); + + if (getpeername(sock, (LPSOCKADDR) &(peername.sa), &size) == 0) { + if (len == 0) { + Tcl_DStringAppendElement(dsPtr, "-peername"); + Tcl_DStringStartSublist(dsPtr); + } + + getnameinfo(&(peername.sa), size, host, sizeof(host), + NULL, 0, NI_NUMERICHOST); + Tcl_DStringAppendElement(dsPtr, host); + getnameinfo(&(peername.sa), size, host, sizeof(host), + port, sizeof(port), reverseDNS | NI_NUMERICSERV); + Tcl_DStringAppendElement(dsPtr, host); + Tcl_DStringAppendElement(dsPtr, port); + if (len == 0) { + Tcl_DStringEndSublist(dsPtr); } else { - hostEntPtr = winSock.gethostbyaddr( - (char *) &(peername.sin_addr), sizeof(peername.sin_addr), - AF_INET); + return TCL_OK; } - if (hostEntPtr != (struct hostent *) NULL) { - Tcl_DStringAppendElement(dsPtr, hostEntPtr->h_name); - } else { - Tcl_DStringAppendElement(dsPtr, - winSock.inet_ntoa(peername.sin_addr)); - } - TclFormatInt(buf, winSock.ntohs(peername.sin_port)); - Tcl_DStringAppendElement(dsPtr, buf); - if (len == 0) { - Tcl_DStringEndSublist(dsPtr); - } else { - return TCL_OK; - } - } else { - /* - * getpeername failed - but if we were asked for all the options - * (len==0), don't flag an error at that point because it could - * be an fconfigure request on a server socket. (which have - * no peer). {copied from unix/tclUnixChan.c} - */ - if (len) { - TclWinConvertWSAError((DWORD) winSock.WSAGetLastError()); - if (interp) { - Tcl_AppendResult(interp, "can't get peername: ", - Tcl_PosixError(interp), - (char *) NULL); - } - return TCL_ERROR; - } - } - } - - if ((len == 0) || - ((len > 1) && (optionName[1] == 's') && - (strncmp(optionName, "-sockname", len) == 0))) { - if (winSock.getsockname(sock, (LPSOCKADDR) &sockname, &size) - == 0) { - if (len == 0) { - Tcl_DStringAppendElement(dsPtr, "-sockname"); - Tcl_DStringStartSublist(dsPtr); - } - Tcl_DStringAppendElement(dsPtr, - winSock.inet_ntoa(sockname.sin_addr)); - if (sockname.sin_addr.s_addr == 0) { - hostEntPtr = (struct hostent *) NULL; + } else { + /* + * getpeername failed - but if we were asked for all the options + * (len==0), don't flag an error at that point because it could be + * an fconfigure request on a server socket (such sockets have no + * peer). {Copied from unix/tclUnixChan.c} + */ + + if (len) { + TclWinConvertError((DWORD) WSAGetLastError()); + if (interp) { + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "can't get peername: %s", + Tcl_PosixError(interp))); + } + return TCL_ERROR; + } + } + } + + if ((len == 0) || ((len > 1) && (optionName[1] == 's') && + (strncmp(optionName, "-sockname", len) == 0))) { + TcpFdList *fds; + address sockname; + socklen_t size; + int found = 0; + + if (len == 0) { + Tcl_DStringAppendElement(dsPtr, "-sockname"); + Tcl_DStringStartSublist(dsPtr); + } + for (fds = infoPtr->sockets; fds != NULL; fds = fds->next) { + sock = fds->fd; + size = sizeof(sockname); + if (getsockname(sock, &(sockname.sa), &size) >= 0) { + int flags = reverseDNS; + + found = 1; + getnameinfo(&sockname.sa, size, host, sizeof(host), + NULL, 0, NI_NUMERICHOST); + Tcl_DStringAppendElement(dsPtr, host); + + /* + * We don't want to resolve INADDR_ANY and sin6addr_any; they + * can sometimes cause problems (and never have a name). + */ + flags |= NI_NUMERICSERV; + if (sockname.sa.sa_family == AF_INET) { + if (sockname.sa4.sin_addr.s_addr == INADDR_ANY) { + flags |= NI_NUMERICHOST; + } + } else if (sockname.sa.sa_family == AF_INET6) { + if ((IN6_ARE_ADDR_EQUAL(&sockname.sa6.sin6_addr, + &in6addr_any)) || + (IN6_IS_ADDR_V4MAPPED(&sockname.sa6.sin6_addr) + && sockname.sa6.sin6_addr.s6_addr[12] == 0 + && sockname.sa6.sin6_addr.s6_addr[13] == 0 + && sockname.sa6.sin6_addr.s6_addr[14] == 0 + && sockname.sa6.sin6_addr.s6_addr[15] == 0)) { + flags |= NI_NUMERICHOST; + } + } + getnameinfo(&sockname.sa, size, host, sizeof(host), + port, sizeof(port), flags); + Tcl_DStringAppendElement(dsPtr, host); + Tcl_DStringAppendElement(dsPtr, port); + } + } + if (found) { + if (len == 0) { + Tcl_DStringEndSublist(dsPtr); } else { - hostEntPtr = winSock.gethostbyaddr( - (char *) &(sockname.sin_addr), sizeof(peername.sin_addr), - AF_INET); + return TCL_OK; } - if (hostEntPtr != (struct hostent *) NULL) { - Tcl_DStringAppendElement(dsPtr, hostEntPtr->h_name); - } else { - Tcl_DStringAppendElement(dsPtr, - winSock.inet_ntoa(sockname.sin_addr)); - } - TclFormatInt(buf, winSock.ntohs(sockname.sin_port)); - Tcl_DStringAppendElement(dsPtr, buf); - if (len == 0) { - Tcl_DStringEndSublist(dsPtr); - } else { - return TCL_OK; - } - } else { + } else { if (interp) { - TclWinConvertWSAError((DWORD) winSock.WSAGetLastError()); - Tcl_AppendResult(interp, "can't get sockname: ", - Tcl_PosixError(interp), - (char *) NULL); + TclWinConvertError((DWORD) WSAGetLastError()); + Tcl_SetObjResult(interp, Tcl_ObjPrintf( + "can't get sockname: %s", Tcl_PosixError(interp))); } return TCL_ERROR; } } -/* +#ifdef TCL_FEATURE_KEEPALIVE_NAGLE if (len == 0 || !strncmp(optionName, "-keepalive", len)) { int optlen; BOOL opt = FALSE; - - if (len == 0) { - Tcl_DStringAppendElement(dsPtr, "-keepalive"); - } + + if (len == 0) { + Tcl_DStringAppendElement(dsPtr, "-keepalive"); + } optlen = sizeof(BOOL); - winSock.getsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, (char *)&opt, - &optlen); + getsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, (char *)&opt, &optlen); if (opt) { Tcl_DStringAppendElement(dsPtr, "1"); } else { Tcl_DStringAppendElement(dsPtr, "0"); } - if (len > 0) return TCL_OK; + if (len > 0) { + return TCL_OK; + } } if (len == 0 || !strncmp(optionName, "-nagle", len)) { int optlen; BOOL opt = FALSE; - - if (len == 0) { - Tcl_DStringAppendElement(dsPtr, "-nagle"); - } + + if (len == 0) { + Tcl_DStringAppendElement(dsPtr, "-nagle"); + } optlen = sizeof(BOOL); - winSock.getsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (char *)&opt, - &optlen); + getsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (char *)&opt, &optlen); if (opt) { Tcl_DStringAppendElement(dsPtr, "0"); } else { Tcl_DStringAppendElement(dsPtr, "1"); } - if (len > 0) return TCL_OK; + if (len > 0) { + return TCL_OK; + } } -*/ +#endif /*TCL_FEATURE_KEEPALIVE_NAGLE*/ if (len > 0) { - /*return Tcl_BadChannelOption(interp, optionName, "peername sockname keepalive nagle");*/ - return Tcl_BadChannelOption(interp, optionName, "peername sockname"); +#ifdef TCL_FEATURE_KEEPALIVE_NAGLE + return Tcl_BadChannelOption(interp, optionName, + "peername sockname keepalive nagle"); +#else + return Tcl_BadChannelOption(interp, optionName, "peername sockname"); +#endif /*TCL_FEATURE_KEEPALIVE_NAGLE*/ } return TCL_OK; @@ -2228,49 +2259,50 @@ TcpGetOptionProc(instanceData, interp, optionName, dsPtr) * * TcpWatchProc -- * - * Informs the channel driver of the events that the generic - * channel code wishes to receive on this socket. + * Informs the channel driver of the events that the generic channel code + * wishes to receive on this socket. * * Results: * None. * * Side effects: - * May cause the notifier to poll if any of the specified - * conditions are already true. + * May cause the notifier to poll if any of the specified conditions are + * already true. * *---------------------------------------------------------------------- */ static void -TcpWatchProc(instanceData, mask) - ClientData instanceData; /* The socket state. */ - int mask; /* Events of interest; an OR-ed - * combination of TCL_READABLE, - * TCL_WRITABLE and TCL_EXCEPTION. */ +TcpWatchProc( + ClientData instanceData, /* The socket state. */ + int mask) /* Events of interest; an OR-ed combination of + * TCL_READABLE, TCL_WRITABLE and + * TCL_EXCEPTION. */ { - SocketInfo *infoPtr = (SocketInfo *) instanceData; - + SocketInfo *infoPtr = instanceData; + /* - * Update the watch events mask. Only if the socket is not a - * server socket. Fix for SF Tcl Bug #557878. + * Update the watch events mask. Only if the socket is not a server + * socket. [Bug 557878] */ - if (!infoPtr->acceptProc) { - infoPtr->watchEvents = 0; + if (!infoPtr->acceptProc) { + infoPtr->watchEvents = 0; if (mask & TCL_READABLE) { infoPtr->watchEvents |= (FD_READ|FD_CLOSE|FD_ACCEPT); } if (mask & TCL_WRITABLE) { infoPtr->watchEvents |= (FD_WRITE|FD_CLOSE|FD_CONNECT); } - + /* - * If there are any conditions already set, then tell the notifier to poll - * rather than block. + * If there are any conditions already set, then tell the notifier to + * poll rather than block. */ if (infoPtr->readyEvents & infoPtr->watchEvents) { Tcl_Time blockTime = { 0, 0 }; + Tcl_SetMaxBlockTime(&blockTime); } } @@ -2294,14 +2326,14 @@ TcpWatchProc(instanceData, mask) */ static int -TcpGetHandleProc(instanceData, direction, handlePtr) - ClientData instanceData; /* The socket state. */ - int direction; /* Not used. */ - ClientData *handlePtr; /* Where to store the handle. */ +TcpGetHandleProc( + ClientData instanceData, /* The socket state. */ + int direction, /* Not used. */ + ClientData *handlePtr) /* Where to store the handle. */ { - SocketInfo *statePtr = (SocketInfo *) instanceData; + SocketInfo *statePtr = instanceData; - *handlePtr = (ClientData) statePtr->socket; + *handlePtr = INT2PTR(statePtr->sockets->fd); return TCL_OK; } @@ -2322,33 +2354,49 @@ TcpGetHandleProc(instanceData, direction, handlePtr) */ static DWORD WINAPI -SocketThread(LPVOID arg) +SocketThread( + LPVOID arg) { MSG msg; - ThreadSpecificData *tsdPtr = (ThreadSpecificData *)(arg); + ThreadSpecificData *tsdPtr = arg; - tsdPtr->hwnd = CreateWindow("TclSocket", "TclSocket", - WS_TILED, 0, 0, 0, 0, NULL, NULL, windowClass.hInstance, arg); + /* + * Create a dummy window receiving socket events. + */ + + tsdPtr->hwnd = CreateWindow(classname, classname, WS_TILED, 0, 0, 0, 0, + NULL, NULL, windowClass.hInstance, arg); /* - * Signal the main thread that the window has been created - * and that the socket thread is ready to go. + * Signalize thread creator that we are done creating the window. */ - + SetEvent(tsdPtr->readyEvent); - + + /* + * If unable to create the window, exit this thread immediately. + */ + if (tsdPtr->hwnd == NULL) { return 1; } /* - * Process all messages on the socket window until WM_QUIT. + * Process all messages on the socket window until WM_QUIT. This threads + * exits only when instructed to do so by the call to + * PostMessage(SOCKET_TERMINATE) in TclpFinalizeSockets(). */ while (GetMessage(&msg, NULL, 0, 0) > 0) { DispatchMessage(&msg); } + /* + * This releases waiters on thread exit in TclpFinalizeSockets() + */ + + SetEvent(tsdPtr->readyEvent); + return msg.wParam; } @@ -2358,85 +2406,82 @@ SocketThread(LPVOID arg) * * SocketProc -- * - * This function is called when WSAAsyncSelect has been used - * to register interest in a socket event, and the event has - * occurred. + * This function is called when WSAAsyncSelect has been used to register + * interest in a socket event, and the event has occurred. * * Results: * 0 on success. * * Side effects: - * The flags for the given socket are updated to reflect the - * event that occured. + * The flags for the given socket are updated to reflect the event that + * occurred. * *---------------------------------------------------------------------- */ static LRESULT CALLBACK -SocketProc(hwnd, message, wParam, lParam) - HWND hwnd; - UINT message; - WPARAM wParam; - LPARAM lParam; +SocketProc( + HWND hwnd, + UINT message, + WPARAM wParam, + LPARAM lParam) { int event, error; SOCKET socket; SocketInfo *infoPtr; - ThreadSpecificData *tsdPtr = + TcpFdList *fds = NULL; + ThreadSpecificData *tsdPtr = (ThreadSpecificData *) #ifdef _WIN64 - (ThreadSpecificData *) GetWindowLongPtr(hwnd, GWLP_USERDATA); + GetWindowLongPtr(hwnd, GWLP_USERDATA); #else - (ThreadSpecificData *) GetWindowLong(hwnd, GWL_USERDATA); + GetWindowLong(hwnd, GWL_USERDATA); #endif switch (message) { + default: + return DefWindowProc(hwnd, message, wParam, lParam); + break; - default: - return DefWindowProc(hwnd, message, wParam, lParam); - break; - - case WM_CREATE: - /* - * store the initial tsdPtr, it's from a different thread, so it's - * not directly accessible, but needed. - */ + case WM_CREATE: + /* + * Store the initial tsdPtr, it's from a different thread, so it's not + * directly accessible, but needed. + */ #ifdef _WIN64 - SetWindowLongPtr(hwnd, GWLP_USERDATA, - (LONG_PTR) ((LPCREATESTRUCT)lParam)->lpCreateParams); + SetWindowLongPtr(hwnd, GWLP_USERDATA, + (LONG_PTR) ((LPCREATESTRUCT)lParam)->lpCreateParams); #else - SetWindowLong(hwnd, GWL_USERDATA, - (LONG) ((LPCREATESTRUCT)lParam)->lpCreateParams); + SetWindowLong(hwnd, GWL_USERDATA, + (LONG) ((LPCREATESTRUCT)lParam)->lpCreateParams); #endif - break; + break; - case WM_DESTROY: - PostQuitMessage(0); - break; + case WM_DESTROY: + PostQuitMessage(0); + break; - case SOCKET_MESSAGE: - event = WSAGETSELECTEVENT(lParam); - error = WSAGETSELECTERROR(lParam); - socket = (SOCKET) wParam; + case SOCKET_MESSAGE: + event = WSAGETSELECTEVENT(lParam); + error = WSAGETSELECTERROR(lParam); + socket = (SOCKET) wParam; - /* - * Find the specified socket on the socket list and update its - * eventState flag. - */ + /* + * Find the specified socket on the socket list and update its + * eventState flag. + */ - WaitForSingleObject(tsdPtr->socketListLock, INFINITE); - for (infoPtr = tsdPtr->socketList; infoPtr != NULL; - infoPtr = infoPtr->nextPtr) { - if (infoPtr->socket == socket) { + WaitForSingleObject(tsdPtr->socketListLock, INFINITE); + for (infoPtr = tsdPtr->socketList; infoPtr != NULL; + infoPtr = infoPtr->nextPtr) { + for (fds = infoPtr->sockets; fds != NULL; fds = fds->next) { + if (fds->fd == socket) { /* * Update the socket state. - */ - - /* - * A count of FD_ACCEPTS is stored, so if an FD_CLOSE - * event happens, then clear the FD_ACCEPT count. - * Otherwise, increment the count if the current - * event is an FD_ACCEPT. + * + * A count of FD_ACCEPTS is stored, so if an FD_CLOSE event + * happens, then clear the FD_ACCEPT count. Otherwise, + * increment the count if the current event is an FD_ACCEPT. */ if (event & FD_CLOSE) { @@ -2448,8 +2493,8 @@ SocketProc(hwnd, message, wParam, lParam) if (event & FD_CONNECT) { /* - * The socket is now connected, - * clear the async connect flag. + * The socket is now connected, clear the async connect + * flag. */ infoPtr->flags &= ~(SOCKET_ASYNC_CONNECT); @@ -2460,15 +2505,15 @@ SocketProc(hwnd, message, wParam, lParam) */ if (error != ERROR_SUCCESS) { - TclWinConvertWSAError((DWORD) error); + TclWinConvertError((DWORD) error); infoPtr->lastError = Tcl_GetErrno(); } + } - } if (infoPtr->flags & SOCKET_ASYNC_CONNECT) { infoPtr->flags &= ~(SOCKET_ASYNC_CONNECT); if (error != ERROR_SUCCESS) { - TclWinConvertWSAError((DWORD) error); + TclWinConvertError((DWORD) error); infoPtr->lastError = Tcl_GetErrno(); } infoPtr->readyEvents |= FD_WRITE; @@ -2478,32 +2523,36 @@ SocketProc(hwnd, message, wParam, lParam) /* * Wake up the Main Thread. */ + SetEvent(tsdPtr->readyEvent); Tcl_ThreadAlert(tsdPtr->threadId); break; } } - SetEvent(tsdPtr->socketListLock); - break; + } + SetEvent(tsdPtr->socketListLock); + break; - case SOCKET_SELECT: + case SOCKET_SELECT: + infoPtr = (SocketInfo *) lParam; + for (fds = infoPtr->sockets; fds != NULL; fds = fds->next) { infoPtr = (SocketInfo *) lParam; if (wParam == SELECT) { - - winSock.WSAAsyncSelect(infoPtr->socket, hwnd, + WSAAsyncSelect(fds->fd, hwnd, SOCKET_MESSAGE, infoPtr->selectEvents); } else { /* * Clear the selection mask */ - winSock.WSAAsyncSelect(infoPtr->socket, hwnd, 0, 0); + WSAAsyncSelect(fds->fd, hwnd, 0, 0); } - break; + } + break; - case SOCKET_TERMINATE: - DestroyWindow(hwnd); - break; + case SOCKET_TERMINATE: + DestroyWindow(hwnd); + break; } return 0; @@ -2517,62 +2566,78 @@ SocketProc(hwnd, message, wParam, lParam) * Returns the name of the local host. * * Results: - * A string containing the network name for this machine, or - * an empty string if we can't figure out the name. The caller - * must not modify or free this string. + * A string containing the network name for this machine. The caller must + * not modify or free this string. * * Side effects: - * None. + * Caches the name to return for future calls. * *---------------------------------------------------------------------- */ -CONST char * -Tcl_GetHostName() +const char * +Tcl_GetHostName(void) { - DWORD length; - WCHAR wbuf[MAX_COMPUTERNAME_LENGTH + 1]; - - Tcl_MutexLock(&socketMutex); - InitSockets(); + return Tcl_GetString(TclGetProcessGlobalValue(&hostName)); +} + +/* + *---------------------------------------------------------------------- + * + * InitializeHostName -- + * + * This routine sets the process global value of the name of the local + * host on which the process is running. + * + * Results: + * None. + * + *---------------------------------------------------------------------- + */ - if (hostnameInitialized) { - Tcl_MutexUnlock(&socketMutex); - return hostname; - } - Tcl_MutexUnlock(&socketMutex); - - if (TclpHasSockets(NULL) == TCL_OK) { - /* - * INTL: bug - */ +void +InitializeHostName( + char **valuePtr, + int *lengthPtr, + Tcl_Encoding *encodingPtr) +{ + TCHAR tbuf[MAX_COMPUTERNAME_LENGTH + 1]; + DWORD length = MAX_COMPUTERNAME_LENGTH + 1; + Tcl_DString ds; - if (winSock.gethostname(hostname, sizeof(hostname)) == 0) { - Tcl_MutexLock(&socketMutex); - hostnameInitialized = 1; - Tcl_MutexUnlock(&socketMutex); - return hostname; - } - } - Tcl_MutexLock(&socketMutex); - length = sizeof(hostname); - if ((*tclWinProcs->getComputerNameProc)(wbuf, &length) != 0) { + if (GetComputerName(tbuf, &length) != 0) { /* * Convert string from native to UTF then change to lowercase. */ - Tcl_DString ds; + Tcl_UtfToLower(Tcl_WinTCharToUtf(tbuf, -1, &ds)); - lstrcpynA(hostname, Tcl_WinTCharToUtf((TCHAR *) wbuf, -1, &ds), - sizeof(hostname)); - Tcl_DStringFree(&ds); - Tcl_UtfToLower(hostname); } else { - hostname[0] = '\0'; + Tcl_DStringInit(&ds); + if (TclpHasSockets(NULL) == TCL_OK) { + /* + * The buffer size of 256 is recommended by the MSDN page that + * documents gethostname() as being always adequate. + */ + + Tcl_DString inDs; + + Tcl_DStringInit(&inDs); + Tcl_DStringSetLength(&inDs, 256); + if (gethostname(Tcl_DStringValue(&inDs), + Tcl_DStringLength(&inDs)) == 0) { + Tcl_ExternalToUtfDString(NULL, Tcl_DStringValue(&inDs), -1, + &ds); + } + Tcl_DStringFree(&inDs); + } } - hostnameInitialized = 1; - Tcl_MutexUnlock(&socketMutex); - return hostname; + + *encodingPtr = Tcl_GetEncoding(NULL, "utf-8"); + *lengthPtr = Tcl_DStringLength(&ds); + *valuePtr = ckalloc((*lengthPtr) + 1); + memcpy(*valuePtr, Tcl_DStringValue(&ds), (size_t)(*lengthPtr)+1); + Tcl_DStringFree(&ds); } /* @@ -2580,10 +2645,10 @@ Tcl_GetHostName() * * TclWinGetSockOpt, et al. -- * - * These functions are wrappers that let us bind the WinSock - * API dynamically so we can run on systems that don't have - * the wsock32.dll. We need wrappers for these interfaces - * because they are called from the generic Tcl code. + * These functions are wrappers that let us bind the WinSock API + * dynamically so we can run on systems that don't have the wsock32.dll. + * We need wrappers for these interfaces because they are called from the + * generic Tcl code. * * Results: * As defined for each function. @@ -2594,83 +2659,53 @@ Tcl_GetHostName() *---------------------------------------------------------------------- */ +#undef TclWinGetSockOpt int -TclWinGetSockOpt(SOCKET s, int level, int optname, char * optval, - int FAR *optlen) +TclWinGetSockOpt( + SOCKET s, + int level, + int optname, + char *optval, + int *optlen) { - /* - * Check that WinSock is initialized; do not call it if not, to - * prevent system crashes. This can happen at exit time if the exit - * handler for WinSock ran before other exit handlers that want to - * use sockets. - */ - - if (!SocketsEnabled()) { - return SOCKET_ERROR; - } - - return winSock.getsockopt(s, level, optname, optval, optlen); + return getsockopt(s, level, optname, optval, optlen); } +#undef TclWinSetSockOpt int -TclWinSetSockOpt(SOCKET s, int level, int optname, const char * optval, - int optlen) +TclWinSetSockOpt( + SOCKET s, + int level, + int optname, + const char *optval, + int optlen) { - /* - * Check that WinSock is initialized; do not call it if not, to - * prevent system crashes. This can happen at exit time if the exit - * handler for WinSock ran before other exit handlers that want to - * use sockets. - */ - if (!SocketsEnabled()) { - return SOCKET_ERROR; - } - - return winSock.setsockopt(s, level, optname, optval, optlen); + return setsockopt(s, level, optname, optval, optlen); } -u_short -TclWinNToHS(u_short netshort) +#undef TclpInetNtoa +char * +TclpInetNtoa( + struct in_addr addr) { - /* - * Check that WinSock is initialized; do not call it if not, to - * prevent system crashes. This can happen at exit time if the exit - * handler for WinSock ran before other exit handlers that want to - * use sockets. - */ - - if (!SocketsEnabled()) { - return (u_short) -1; - } - - return winSock.ntohs(netshort); + return inet_ntoa(addr); } +#undef TclWinGetServByName struct servent * -TclWinGetServByName(const char * name, const char * proto) +TclWinGetServByName( + const char *name, + const char *proto) { - /* - * Check that WinSock is initialized; do not call it if not, to - * prevent system crashes. This can happen at exit time if the exit - * handler for WinSock ran before other exit handlers that want to - * use sockets. - */ - if (!SocketsEnabled()) { - return (struct servent *) NULL; - } - - return winSock.getservbyname(name, proto); + return getservbyname(name, proto); } - - /* *---------------------------------------------------------------------- * - * TclpCutSockChannel -- + * TcpThreadActionProc -- * - * Remove any thread local refs to this channel. See - * Tcl_CutChannel for more info. + * Insert or remove any thread local refs to this channel. * * Results: * None. @@ -2681,114 +2716,81 @@ TclWinGetServByName(const char * name, const char * proto) *---------------------------------------------------------------------- */ -void -TclpCutSockChannel(chan) - Tcl_Channel chan; /* The channel being removed. Must - * not be referenced in any - * interpreter. */ +static void +TcpThreadActionProc( + ClientData instanceData, + int action) { ThreadSpecificData *tsdPtr; - SocketInfo *infoPtr; - SocketInfo **nextPtrPtr; - int removed = 0; - - if (Tcl_GetChannelType(chan) != &tcpChannelType) - return; - - /* - * The initializtion of tsdPtr _after_ we have determined that we - * are dealing with socket is necessary. Doing it before causes - * the module to access th tdsPtr when it is not initialized yet, - * causing a lockup. - */ - - tsdPtr = TCL_TSD_INIT(&dataKey); - infoPtr = (SocketInfo *) Tcl_GetChannelInstanceData (chan); + SocketInfo *infoPtr = instanceData; + int notifyCmd; - for (nextPtrPtr = &(tsdPtr->socketList); (*nextPtrPtr) != NULL; - nextPtrPtr = &((*nextPtrPtr)->nextPtr)) { - if ((*nextPtrPtr) == infoPtr) { - (*nextPtrPtr) = infoPtr->nextPtr; - removed = 1; - break; - } - } + if (action == TCL_CHANNEL_THREAD_INSERT) { + /* + * Ensure that socket subsystem is initialized in this thread, or else + * sockets will not work. + */ - /* - * This could happen if the channel was created in one thread - * and then moved to another without updating the thread - * local data in each thread. - */ + Tcl_MutexLock(&socketMutex); + InitSockets(); + Tcl_MutexUnlock(&socketMutex); - if (!removed) { - Tcl_Panic("file info ptr not on thread channel list"); - } + tsdPtr = TCL_TSD_INIT(&dataKey); - /* - * Stop notifications for the socket to occur in this thread. - */ + WaitForSingleObject(tsdPtr->socketListLock, INFINITE); + infoPtr->nextPtr = tsdPtr->socketList; + tsdPtr->socketList = infoPtr; + SetEvent(tsdPtr->socketListLock); - SendMessage(tsdPtr->hwnd, SOCKET_SELECT, - (WPARAM) UNSELECT, (LPARAM) infoPtr); -} - -/* - *---------------------------------------------------------------------- - * - * TclpSpliceSockChannel -- - * - * Insert thread local ref for this channel. - * Tcl_SpliceChannel for more info. - * - * Results: - * None. - * - * Side effects: - * Changes thread local list of valid channels. - * - *---------------------------------------------------------------------- - */ - -void -TclpSpliceSockChannel(chan) - Tcl_Channel chan; /* The channel being removed. Must - * not be referenced in any - * interpreter. */ -{ - ThreadSpecificData *tsdPtr; - SocketInfo *infoPtr; + notifyCmd = SELECT; + } else { + SocketInfo **nextPtrPtr; + int removed = 0; - if (Tcl_GetChannelType(chan) != &tcpChannelType) - return; + tsdPtr = TCL_TSD_INIT(&dataKey); - /* - * Ensure that socket subsystem is initialized in this thread, or - * else sockets will not work. - */ + /* + * TIP #218, Bugfix: All access to socketList has to be protected by + * the lock. + */ - Tcl_MutexLock(&socketMutex); - InitSockets(); - Tcl_MutexUnlock(&socketMutex); + WaitForSingleObject(tsdPtr->socketListLock, INFINITE); + for (nextPtrPtr = &(tsdPtr->socketList); (*nextPtrPtr) != NULL; + nextPtrPtr = &((*nextPtrPtr)->nextPtr)) { + if ((*nextPtrPtr) == infoPtr) { + (*nextPtrPtr) = infoPtr->nextPtr; + removed = 1; + break; + } + } + SetEvent(tsdPtr->socketListLock); - /* - * The initializtion of tsdPtr _after_ we have determined that we - * are dealing with socket is necessary. Doing it before causes - * the module to access th tdsPtr when it is not initialized yet, - * causing a lockup. - */ + /* + * This could happen if the channel was created in one thread and then + * moved to another without updating the thread local data in each + * thread. + */ - tsdPtr = TCL_TSD_INIT(&dataKey); - infoPtr = (SocketInfo *) Tcl_GetChannelInstanceData (chan); + if (!removed) { + Tcl_Panic("file info ptr not on thread channel list"); + } - WaitForSingleObject(tsdPtr->socketListLock, INFINITE); - infoPtr->nextPtr = tsdPtr->socketList; - tsdPtr->socketList = infoPtr; - SetEvent(tsdPtr->socketListLock); + notifyCmd = UNSELECT; + } /* - * Ensure that notifications for the socket occur in this thread. + * Ensure that, or stop, notifications for the socket occur in this + * thread. */ SendMessage(tsdPtr->hwnd, SOCKET_SELECT, - (WPARAM) SELECT, (LPARAM) infoPtr); + (WPARAM) notifyCmd, (LPARAM) infoPtr); } + +/* + * Local Variables: + * mode: c + * c-basic-offset: 4 + * fill-column: 78 + * End: + */ |