diff options
Diffstat (limited to 'unix/tclUnixChan.c')
| -rw-r--r-- | unix/tclUnixChan.c | 1333 |
1 files changed, 119 insertions, 1214 deletions
diff --git a/unix/tclUnixChan.c b/unix/tclUnixChan.c index 53c5c47..866d77d 100644 --- a/unix/tclUnixChan.c +++ b/unix/tclUnixChan.c @@ -7,8 +7,8 @@ * Copyright (c) 1995-1997 Sun Microsystems, Inc. * Copyright (c) 1998-1999 by Scriptics Corporation. * - * 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. */ #include "tclInt.h" /* Internal definitions for Tcl. */ @@ -139,63 +139,13 @@ typedef struct TtyAttrs { if (interp) { \ Tcl_AppendResult(interp, (detail), \ " not supported for this platform", NULL); \ + Tcl_SetErrorCode(interp, "TCL", "UNSUPPORTED", NULL); \ } /* - * This structure describes per-instance state of a tcp based channel. - */ - -typedef struct TcpState { - Tcl_Channel channel; /* Channel associated with this file. */ - int fd; /* The socket itself. */ - int flags; /* ORed combination of the bitfields defined - * below. */ - Tcl_TcpAcceptProc *acceptProc; - /* Proc to call on accept. */ - ClientData acceptProcData; /* The data for the accept proc. */ -} TcpState; - -/* - * These bits may be ORed together into the "flags" field of a TcpState - * structure. - */ - -#define TCP_ASYNC_SOCKET (1<<0) /* Asynchronous socket. */ -#define TCP_ASYNC_CONNECT (1<<1) /* Async connect in progress. */ - -/* - * The following defines the maximum length of the listen queue. This is the - * number of outstanding yet-to-be-serviced requests for a connection on a - * server socket, more than this number of outstanding requests and the - * connection request will fail. - */ - -#ifndef SOMAXCONN -# define SOMAXCONN 100 -#endif /* SOMAXCONN */ - -#if (SOMAXCONN < 100) -# undef SOMAXCONN -# define SOMAXCONN 100 -#endif /* SOMAXCONN < 100 */ - -/* - * The following defines how much buffer space the kernel should maintain for - * a socket. - */ - -#define SOCKET_BUFSIZE 4096 - -/* * Static routines for this file: */ -static TcpState * CreateSocket(Tcl_Interp *interp, int port, - const char *host, int server, const char *myaddr, - int myport, int async); -static int CreateSocketAddress(struct sockaddr_in *sockaddrPtr, - const char *host, int port, int willBind, - const char **errorMsgPtr); static int FileBlockModeProc(ClientData instanceData, int mode); static int FileCloseProc(ClientData instanceData, Tcl_Interp *interp); @@ -212,20 +162,6 @@ static int FileTruncateProc(ClientData instanceData, static Tcl_WideInt FileWideSeekProc(ClientData instanceData, Tcl_WideInt offset, int mode, int *errorCode); static void FileWatchProc(ClientData instanceData, int mask); -static void TcpAccept(ClientData data, int mask); -static int TcpBlockModeProc(ClientData data, int mode); -static int TcpCloseProc(ClientData instanceData, - Tcl_Interp *interp); -static int TcpGetHandleProc(ClientData instanceData, - int direction, ClientData *handlePtr); -static int TcpGetOptionProc(ClientData instanceData, - Tcl_Interp *interp, const char *optionName, - Tcl_DString *dsPtr); -static int TcpInputProc(ClientData instanceData, char *buf, - int toRead, int *errorCode); -static int TcpOutputProc(ClientData instanceData, - const char *buf, int toWrite, int *errorCode); -static void TcpWatchProc(ClientData instanceData, int mask); #ifdef SUPPORTS_TTY static void TtyGetAttributes(int fd, TtyAttrs *ttyPtr); static int TtyGetOptionProc(ClientData instanceData, @@ -245,15 +181,12 @@ static int TtySetOptionProc(ClientData instanceData, Tcl_Interp *interp, const char *optionName, const char *value); #endif /* SUPPORTS_TTY */ -static int WaitForConnect(TcpState *statePtr, int *errorCodePtr); -static Tcl_Channel MakeTcpClientChannelMode(ClientData tcpSocket, - int mode); /* * This structure describes the channel type structure for file based IO: */ -static Tcl_ChannelType fileChannelType = { +static const Tcl_ChannelType fileChannelType = { "file", /* Type name. */ TCL_CHANNEL_VERSION_5, /* v5 channel */ FileCloseProc, /* Close proc. */ @@ -270,7 +203,7 @@ static Tcl_ChannelType fileChannelType = { NULL, /* handler proc. */ FileWideSeekProc, /* wide seek proc. */ NULL, - FileTruncateProc, /* truncate proc. */ + FileTruncateProc /* truncate proc. */ }; #ifdef SUPPORTS_TTY @@ -279,7 +212,7 @@ static Tcl_ChannelType fileChannelType = { * Note that this type is a subclass of the "file" type. */ -static Tcl_ChannelType ttyChannelType = { +static const Tcl_ChannelType ttyChannelType = { "tty", /* Type name. */ TCL_CHANNEL_VERSION_5, /* v5 channel */ FileCloseProc, /* Close proc. */ @@ -296,34 +229,9 @@ static Tcl_ChannelType ttyChannelType = { NULL, /* handler proc. */ NULL, /* wide seek proc. */ NULL, /* thread action proc. */ - NULL, /* truncate proc. */ + NULL /* truncate proc. */ }; #endif /* SUPPORTS_TTY */ - -/* - * This structure describes the channel type structure for TCP socket - * based IO: - */ - -static Tcl_ChannelType tcpChannelType = { - "tcp", /* Type name. */ - TCL_CHANNEL_VERSION_5, /* v5 channel */ - TcpCloseProc, /* Close proc. */ - TcpInputProc, /* Input proc. */ - TcpOutputProc, /* Output proc. */ - NULL, /* Seek proc. */ - NULL, /* Set option proc. */ - TcpGetOptionProc, /* Get option proc. */ - TcpWatchProc, /* Initialize notifier. */ - TcpGetHandleProc, /* Get OS handles out of channel. */ - NULL, /* close2proc. */ - TcpBlockModeProc, /* Set blocking or non-blocking mode.*/ - NULL, /* flush proc. */ - NULL, /* handler proc. */ - NULL, /* wide seek proc. */ - NULL, /* thread action proc. */ - NULL, /* truncate proc. */ -}; /* *---------------------------------------------------------------------- @@ -346,11 +254,10 @@ static Tcl_ChannelType tcpChannelType = { static int FileBlockModeProc( ClientData instanceData, /* File state. */ - int mode) /* The mode to set. Can be one of - * TCL_MODE_BLOCKING or - * TCL_MODE_NONBLOCKING. */ + int mode) /* The mode to set. Can be TCL_MODE_BLOCKING + * or TCL_MODE_NONBLOCKING. */ { - FileState *fsPtr = (FileState *) instanceData; + FileState *fsPtr = instanceData; if (TclUnixSetBlockingMode(fsPtr->fd, mode) < 0) { return errno; @@ -385,7 +292,7 @@ FileInputProc( * buffer? */ int *errorCodePtr) /* Where to store error code. */ { - FileState *fsPtr = (FileState *) instanceData; + FileState *fsPtr = instanceData; int bytesRead; /* How many bytes were actually read from the * input device? */ @@ -431,7 +338,7 @@ FileOutputProc( int toWrite, /* How many bytes to write? */ int *errorCodePtr) /* Where to store error code. */ { - FileState *fsPtr = (FileState *) instanceData; + FileState *fsPtr = instanceData; int written; *errorCodePtr = 0; @@ -475,7 +382,7 @@ FileCloseProc( ClientData instanceData, /* File state. */ Tcl_Interp *interp) /* For error reporting - unused. */ { - FileState *fsPtr = (FileState *) instanceData; + FileState *fsPtr = instanceData; int errorCode = 0; Tcl_DeleteFileHandler(fsPtr->fd); @@ -490,7 +397,7 @@ FileCloseProc( errorCode = errno; } } - ckfree((char *) fsPtr); + ckfree(fsPtr); return errorCode; } @@ -521,7 +428,7 @@ FileSeekProc( * one of SEEK_START, SEEK_SET or SEEK_END. */ int *errorCodePtr) /* To store error code. */ { - FileState *fsPtr = (FileState *) instanceData; + FileState *fsPtr = instanceData; Tcl_WideInt oldLoc, newLoc; /* @@ -582,7 +489,7 @@ FileWideSeekProc( * one of SEEK_START, SEEK_CUR or SEEK_END. */ int *errorCodePtr) /* To store error code. */ { - FileState *fsPtr = (FileState *) instanceData; + FileState *fsPtr = instanceData; Tcl_WideInt newLoc; newLoc = TclOSseek(fsPtr->fd, (Tcl_SeekOffset) offset, mode); @@ -615,7 +522,7 @@ FileWatchProc( * TCL_READABLE, TCL_WRITABLE and * TCL_EXCEPTION. */ { - FileState *fsPtr = (FileState *) instanceData; + FileState *fsPtr = instanceData; /* * Make sure we only register for events that are valid on this file. Note @@ -626,8 +533,7 @@ FileWatchProc( mask &= fsPtr->validMask; if (mask) { Tcl_CreateFileHandler(fsPtr->fd, mask, - (Tcl_FileProc *) Tcl_NotifyChannel, - (ClientData) fsPtr->channel); + (Tcl_FileProc *) Tcl_NotifyChannel, fsPtr->channel); } else { Tcl_DeleteFileHandler(fsPtr->fd); } @@ -657,10 +563,10 @@ FileGetHandleProc( int direction, /* TCL_READABLE or TCL_WRITABLE */ ClientData *handlePtr) /* Where to store the handle. */ { - FileState *fsPtr = (FileState *) instanceData; + FileState *fsPtr = instanceData; if (direction & fsPtr->validMask) { - *handlePtr = (ClientData) INT2PTR(fsPtr->fd); + *handlePtr = INT2PTR(fsPtr->fd); return TCL_OK; } return TCL_ERROR; @@ -727,7 +633,7 @@ TtySetOptionProc( const char *optionName, /* Which option to set? */ const char *value) /* New value for option. */ { - FileState *fsPtr = (FileState *) instanceData; + FileState *fsPtr = instanceData; unsigned int len, vlen; TtyAttrs tty; #ifdef USE_TERMIOS @@ -742,6 +648,7 @@ TtySetOptionProc( /* * Option -mode baud,parity,databits,stopbits */ + if ((len > 2) && (strncmp(optionName, "-mode", len) == 0)) { if (TtyParseMode(interp, value, &tty.baud, &tty.parity, &tty.data, &tty.stop) != TCL_OK) { @@ -773,7 +680,9 @@ TtySetOptionProc( CLEAR_BITS(iostate.c_cflag, CRTSCTS); #endif /* CRTSCTS */ if (strncasecmp(value, "NONE", vlen) == 0) { - /* leave all handshake options disabled */ + /* + * Leave all handshake options disabled. + */ } else if (strncasecmp(value, "XONXOFF", vlen) == 0) { SET_BITS(iostate.c_iflag, IXON | IXOFF | IXANY); } else if (strncasecmp(value, "RTSCTS", vlen) == 0) { @@ -791,6 +700,8 @@ TtySetOptionProc( Tcl_AppendResult(interp, "bad value for -handshake: " "must be one of xonxoff, rtscts, dtrdsr or none", NULL); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE", + "VALUE", NULL); } return TCL_ERROR; } @@ -803,31 +714,33 @@ TtySetOptionProc( */ if ((len > 1) && (strncmp(optionName, "-xchar", len) == 0)) { - GETIOSTATE(fsPtr->fd, &iostate); + Tcl_DString ds; + if (Tcl_SplitList(interp, value, &argc, &argv) == TCL_ERROR) { return TCL_ERROR; - } - if (argc == 2) { - Tcl_DString ds; - Tcl_DStringInit(&ds); - - Tcl_UtfToExternalDString(NULL, argv[0], -1, &ds); - iostate.c_cc[VSTART] = *(const cc_t *) Tcl_DStringValue(&ds); - Tcl_DStringSetLength(&ds, 0); - - Tcl_UtfToExternalDString(NULL, argv[1], -1, &ds); - iostate.c_cc[VSTOP] = *(const cc_t *) Tcl_DStringValue(&ds); - Tcl_DStringFree(&ds); - } else { + } else if (argc != 2) { if (interp) { Tcl_AppendResult(interp, "bad value for -xchar: " "should be a list of two elements", NULL); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE", + "VALUE", NULL); } - ckfree((char *) argv); + ckfree(argv); return TCL_ERROR; } + + GETIOSTATE(fsPtr->fd, &iostate); + + Tcl_UtfToExternalDString(NULL, argv[0], -1, &ds); + iostate.c_cc[VSTART] = *(const cc_t *) Tcl_DStringValue(&ds); + Tcl_DStringSetLength(&ds, 0); + + Tcl_UtfToExternalDString(NULL, argv[1], -1, &ds); + iostate.c_cc[VSTOP] = *(const cc_t *) Tcl_DStringValue(&ds); + Tcl_DStringFree(&ds); + ckfree(argv); + SETIOSTATE(fsPtr->fd, &iostate); - ckfree((char *) argv); return TCL_OK; } @@ -862,15 +775,17 @@ TtySetOptionProc( if (interp) { Tcl_AppendResult(interp, "bad value for -ttycontrol: " "should be a list of signal,value pairs", NULL); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE", + "VALUE", NULL); } - ckfree((char *) argv); + ckfree(argv); return TCL_ERROR; } GETCONTROL(fsPtr->fd, &control); for (i = 0; i < argc-1; i += 2) { if (Tcl_GetBoolean(interp, argv[i+1], &flag) == TCL_ERROR) { - ckfree((char *) argv); + ckfree(argv); return TCL_ERROR; } if (strncasecmp(argv[i], "DTR", strlen(argv[i])) == 0) { @@ -882,7 +797,7 @@ TtySetOptionProc( } #else /* !TIOCM_DTR */ UNSUPPORTED_OPTION("-ttycontrol DTR"); - ckfree((char *) argv); + ckfree(argv); return TCL_ERROR; #endif /* TIOCM_DTR */ } else if (strncasecmp(argv[i], "RTS", strlen(argv[i])) == 0) { @@ -894,7 +809,7 @@ TtySetOptionProc( } #else /* !TIOCM_RTS*/ UNSUPPORTED_OPTION("-ttycontrol RTS"); - ckfree((char *) argv); + ckfree(argv); return TCL_ERROR; #endif /* TIOCM_RTS*/ } else if (strncasecmp(argv[i], "BREAK", strlen(argv[i])) == 0) { @@ -902,7 +817,7 @@ TtySetOptionProc( SETBREAK(fsPtr->fd, flag); #else /* !SETBREAK */ UNSUPPORTED_OPTION("-ttycontrol BREAK"); - ckfree((char *) argv); + ckfree(argv); return TCL_ERROR; #endif /* SETBREAK */ } else { @@ -910,14 +825,16 @@ TtySetOptionProc( Tcl_AppendResult(interp, "bad signal \"", argv[i], "\" for -ttycontrol: must be " "DTR, RTS or BREAK", NULL); + Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE", + "VALUE", NULL); } - ckfree((char *) argv); + ckfree(argv); return TCL_ERROR; } } /* -ttycontrol options loop */ SETCONTROL(fsPtr->fd, &control); - ckfree((char *) argv); + ckfree(argv); return TCL_OK; } @@ -958,7 +875,7 @@ TtyGetOptionProc( const char *optionName, /* Option to get. */ Tcl_DString *dsPtr) /* Where to store value(s). */ { - FileState *fsPtr = (FileState *) instanceData; + FileState *fsPtr = instanceData; unsigned int len; char buf[3*TCL_INTEGER_SPACE + 16]; int valid = 0; /* Flag if valid option parsed. */ @@ -992,17 +909,17 @@ TtyGetOptionProc( if (len==0 || (len>1 && strncmp(optionName, "-xchar", len)==0)) { IOSTATE iostate; Tcl_DString ds; - valid = 1; + valid = 1; GETIOSTATE(fsPtr->fd, &iostate); Tcl_DStringInit(&ds); - Tcl_ExternalToUtfDString(NULL, (const char *) &iostate.c_cc[VSTART], 1, &ds); - Tcl_DStringAppendElement(dsPtr, (const char *) Tcl_DStringValue(&ds)); + Tcl_ExternalToUtfDString(NULL, (char *) &iostate.c_cc[VSTART], 1, &ds); + Tcl_DStringAppendElement(dsPtr, Tcl_DStringValue(&ds)); Tcl_DStringSetLength(&ds, 0); - Tcl_ExternalToUtfDString(NULL, (const char *) &iostate.c_cc[VSTOP], 1, &ds); - Tcl_DStringAppendElement(dsPtr, (const char *) Tcl_DStringValue(&ds)); + Tcl_ExternalToUtfDString(NULL, (char *) &iostate.c_cc[VSTOP], 1, &ds); + Tcl_DStringAppendElement(dsPtr, Tcl_DStringValue(&ds)); Tcl_DStringFree(&ds); } if (len == 0) { @@ -1039,6 +956,7 @@ TtyGetOptionProc( * Option is readonly and returned by [fconfigure chan -ttystatus] but not * returned by unnamed [fconfigure chan]. */ + if ((len > 4) && (strncmp(optionName, "-ttystatus", len) == 0)) { int status; @@ -1276,7 +1194,7 @@ TtyGetAttributes( case PARENB : parity = 'e'; break; case PARENB | PARODD : parity = 'o'; break; } -#endif /* !PAREXT */ +#endif /* PAREXT */ data = iostate.c_cflag & CSIZE; data = (data == CS5) ? 5 : (data == CS6) ? 6 : (data == CS7) ? 7 : 8; @@ -1472,6 +1390,7 @@ TtyParseMode( if (interp != NULL) { Tcl_AppendResult(interp, bad, ": should be baud,parity,data,stop", NULL); + Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", NULL); } return TCL_ERROR; } @@ -1479,13 +1398,19 @@ TtyParseMode( /* * Only allow setting mark/space parity on platforms that support it Make * sure to allow for the case where strchr is a macro. [Bug: 5089] + * + * We cannot if/else/endif the strchr arguments, it has to be the whole + * function. On AIX this function is apparently a macro, and macros do + * not allow pre-processor directives in their arguments. */ + if ( #if defined(PAREXT) || defined(USE_TERMIO) - if (strchr("noems", parity) == NULL) { + strchr("noems", parity) #else - if (strchr("noe", parity) == NULL) { + strchr("noe", parity) #endif /* PAREXT|USE_TERMIO */ + == NULL) { if (interp != NULL) { Tcl_AppendResult(interp, bad, " parity: should be ", #if defined(PAREXT) || defined(USE_TERMIO) @@ -1494,6 +1419,7 @@ TtyParseMode( "n, o, or e", #endif /* PAREXT|USE_TERMIO */ NULL); + Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", NULL); } return TCL_ERROR; } @@ -1502,12 +1428,14 @@ TtyParseMode( if (interp != NULL) { Tcl_AppendResult(interp, bad, " data: should be 5, 6, 7, or 8", NULL); + Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", NULL); } return TCL_ERROR; } if ((*stopPtr < 0) || (*stopPtr > 2)) { if (interp != NULL) { Tcl_AppendResult(interp, bad, " stop: should be 1 or 2", NULL); + Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", NULL); } return TCL_ERROR; } @@ -1543,21 +1471,20 @@ TtyInit( * initialized. */ int initialize) { - TtyState *ttyPtr; + TtyState *ttyPtr = ckalloc(sizeof(TtyState)); int stateUpdated = 0; - ttyPtr = (TtyState *) ckalloc((unsigned) sizeof(TtyState)); GETIOSTATE(fd, &ttyPtr->savedState); if (initialize) { IOSTATE iostate = ttyPtr->savedState; #if defined(USE_TERMIOS) || defined(USE_TERMIO) - if (iostate.c_iflag != IGNBRK || - iostate.c_oflag != 0 || - iostate.c_lflag != 0 || - iostate.c_cflag & CREAD || - iostate.c_cc[VMIN] != 1 || - iostate.c_cc[VTIME] != 0) { + if (iostate.c_iflag != IGNBRK + || iostate.c_oflag != 0 + || iostate.c_lflag != 0 + || iostate.c_cflag & CREAD + || iostate.c_cc[VMIN] != 1 + || iostate.c_cc[VTIME] != 0) { stateUpdated = 1; } iostate.c_iflag = IGNBRK; @@ -1569,8 +1496,8 @@ TtyInit( #endif /* USE_TERMIOS|USE_TERMIO */ #ifdef USE_SGTTY - if ((iostate.sg_flags & (EVENP | ODDP)) || - !(iostate.sg_flags & RAW)) { + if ((iostate.sg_flags & (EVENP | ODDP)) + || !(iostate.sg_flags & RAW)) { ttyPtr->stateUpdated = 1; } iostate.sg_flags &= EVENP | ODDP; @@ -1622,7 +1549,7 @@ TclpOpenFileChannel( FileState *fsPtr; const char *native, *translation; char channelName[16 + TCL_INTEGER_SPACE]; - Tcl_ChannelType *channelTypePtr; + const Tcl_ChannelType *channelTypePtr; switch (mode & (O_RDONLY | O_WRONLY | O_RDWR)) { case O_RDONLY: @@ -1695,14 +1622,14 @@ TclpOpenFileChannel( { translation = NULL; channelTypePtr = &fileChannelType; - fsPtr = (FileState *) ckalloc((unsigned) sizeof(FileState)); + fsPtr = ckalloc(sizeof(FileState)); } fsPtr->validMask = channelPermissions | TCL_EXCEPTION; fsPtr->fd = fd; fsPtr->channel = Tcl_CreateChannel(channelTypePtr, channelName, - (ClientData) fsPtr, channelPermissions); + fsPtr, channelPermissions); if (translation != NULL) { /* @@ -1748,7 +1675,7 @@ Tcl_MakeFileChannel( FileState *fsPtr; char channelName[16 + TCL_INTEGER_SPACE]; int fd = PTR2INT(handle); - Tcl_ChannelType *channelTypePtr; + const Tcl_ChannelType *channelTypePtr; struct sockaddr sockaddr; socklen_t sockaddrLen = sizeof(sockaddr); @@ -1765,20 +1692,20 @@ Tcl_MakeFileChannel( sprintf(channelName, "serial%d", fd); } else #endif /* SUPPORTS_TTY */ - if (getsockname(fd, (struct sockaddr *)&sockaddr, &sockaddrLen) == 0 - && sockaddrLen > 0 - && sockaddr.sa_family == AF_INET) { - return MakeTcpClientChannelMode((ClientData) INT2PTR(fd), mode); + if ((getsockname(fd, (struct sockaddr *)&sockaddr, &sockaddrLen) == 0) + && (sockaddrLen > 0) + && (sockaddr.sa_family == AF_INET || sockaddr.sa_family == AF_INET6)) { + return TclpMakeTcpClientChannelMode(INT2PTR(fd), mode); } else { channelTypePtr = &fileChannelType; - fsPtr = (FileState *) ckalloc((unsigned) sizeof(FileState)); + fsPtr = ckalloc(sizeof(FileState)); sprintf(channelName, "file%d", fd); } fsPtr->fd = fd; fsPtr->validMask = mode | TCL_EXCEPTION; fsPtr->channel = Tcl_CreateChannel(channelTypePtr, channelName, - (ClientData) fsPtr, mode); + fsPtr, mode); return fsPtr->channel; } @@ -1786,1033 +1713,6 @@ Tcl_MakeFileChannel( /* *---------------------------------------------------------------------- * - * TcpBlockModeProc -- - * - * This function is invoked by the generic IO level to set blocking and - * nonblocking mode on a TCP socket based channel. - * - * Results: - * 0 if successful, errno when failed. - * - * Side effects: - * Sets the device into blocking or nonblocking mode. - * - *---------------------------------------------------------------------- - */ - - /* ARGSUSED */ -static int -TcpBlockModeProc( - ClientData instanceData, /* Socket state. */ - int mode) /* The mode to set. Can be one of - * TCL_MODE_BLOCKING or - * TCL_MODE_NONBLOCKING. */ -{ - TcpState *statePtr = (TcpState *) instanceData; - - if (mode == TCL_MODE_BLOCKING) { - CLEAR_BITS(statePtr->flags, TCP_ASYNC_SOCKET); - } else { - SET_BITS(statePtr->flags, TCP_ASYNC_SOCKET); - } - if (TclUnixSetBlockingMode(statePtr->fd, mode) < 0) { - return errno; - } - return 0; -} - -/* - *---------------------------------------------------------------------- - * - * WaitForConnect -- - * - * Waits for a connection on an asynchronously opened socket to be - * completed. - * - * Results: - * None. - * - * Side effects: - * The socket is connected after this function returns. - * - *---------------------------------------------------------------------- - */ - -static int -WaitForConnect( - TcpState *statePtr, /* State of the socket. */ - int *errorCodePtr) /* Where to store errors? */ -{ - int timeOut; /* How long to wait. */ - int state; /* Of calling TclWaitForFile. */ - - /* - * If an asynchronous connect is in progress, attempt to wait for it to - * complete before reading. - */ - - if (statePtr->flags & TCP_ASYNC_CONNECT) { - if (statePtr->flags & TCP_ASYNC_SOCKET) { - timeOut = 0; - } else { - timeOut = -1; - } - errno = 0; - state = TclUnixWaitForFile(statePtr->fd, - TCL_WRITABLE | TCL_EXCEPTION, timeOut); - if (!(statePtr->flags & TCP_ASYNC_SOCKET)) { - (void) TclUnixSetBlockingMode(statePtr->fd, TCL_MODE_BLOCKING); - } - if (state & TCL_EXCEPTION) { - return -1; - } - if (state & TCL_WRITABLE) { - CLEAR_BITS(statePtr->flags, TCP_ASYNC_CONNECT); - } else if (timeOut == 0) { - *errorCodePtr = errno = EWOULDBLOCK; - return -1; - } - } - return 0; -} - -/* - *---------------------------------------------------------------------- - * - * TcpInputProc -- - * - * This function is invoked by the generic IO level to read input from a - * TCP socket based channel. - * - * NOTE: We cannot share code with FilePipeInputProc because here we must - * use recv to obtain the input from the channel, not read. - * - * Results: - * The number of bytes read is returned or -1 on error. An output - * argument contains the POSIX error code on error, or zero if no error - * occurred. - * - * Side effects: - * Reads input from the input device of the channel. - * - *---------------------------------------------------------------------- - */ - - /* ARGSUSED */ -static int -TcpInputProc( - ClientData instanceData, /* Socket state. */ - char *buf, /* Where to store data read. */ - int bufSize, /* How much space is available in the - * buffer? */ - int *errorCodePtr) /* Where to store error code. */ -{ - TcpState *statePtr = (TcpState *) instanceData; - int bytesRead, state; - - *errorCodePtr = 0; - state = WaitForConnect(statePtr, errorCodePtr); - if (state != 0) { - return -1; - } - bytesRead = recv(statePtr->fd, buf, (size_t) bufSize, 0); - if (bytesRead > -1) { - return bytesRead; - } - if (errno == ECONNRESET) { - /* - * Turn ECONNRESET into a soft EOF condition. - */ - - return 0; - } - *errorCodePtr = errno; - return -1; -} - -/* - *---------------------------------------------------------------------- - * - * TcpOutputProc -- - * - * This function is invoked by the generic IO level to write output to a - * TCP socket based channel. - * - * NOTE: We cannot share code with FilePipeOutputProc because here we - * must use send, not write, to get reliable error reporting. - * - * Results: - * The number of bytes written is returned. An output argument is set to - * a POSIX error code if an error occurred, or zero. - * - * Side effects: - * Writes output on the output device of the channel. - * - *---------------------------------------------------------------------- - */ - -static int -TcpOutputProc( - ClientData instanceData, /* Socket state. */ - const char *buf, /* The data buffer. */ - int toWrite, /* How many bytes to write? */ - int *errorCodePtr) /* Where to store error code. */ -{ - TcpState *statePtr = (TcpState *) instanceData; - int written; - int state; /* Of waiting for connection. */ - - *errorCodePtr = 0; - state = WaitForConnect(statePtr, errorCodePtr); - if (state != 0) { - return -1; - } - written = send(statePtr->fd, buf, (size_t) toWrite, 0); - if (written > -1) { - return written; - } - *errorCodePtr = errno; - return -1; -} - -/* - *---------------------------------------------------------------------- - * - * TcpCloseProc -- - * - * This function is invoked by the generic IO level to perform - * channel-type-specific cleanup when a TCP socket based channel is - * closed. - * - * Results: - * 0 if successful, the value of errno if failed. - * - * Side effects: - * Closes the socket of the channel. - * - *---------------------------------------------------------------------- - */ - - /* ARGSUSED */ -static int -TcpCloseProc( - ClientData instanceData, /* The socket to close. */ - Tcl_Interp *interp) /* For error reporting - unused. */ -{ - TcpState *statePtr = (TcpState *) instanceData; - int errorCode = 0; - - /* - * Delete a file handler that may be active for this socket if this is a - * server socket - the file handler was created automatically by Tcl as - * part of the mechanism to accept new client connections. Channel - * handlers are already deleted in the generic IO channel closing code - * that called this function, so we do not have to delete them here. - */ - - Tcl_DeleteFileHandler(statePtr->fd); - - if (close(statePtr->fd) < 0) { - errorCode = errno; - } - ckfree((char *) statePtr); - - return errorCode; -} - -/* - *---------------------------------------------------------------------- - * - * TcpGetOptionProc -- - * - * 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. Sets - * Error message if needed. - * - * Side effects: - * None. - * - *---------------------------------------------------------------------- - */ - -static int -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. */ -{ - TcpState *statePtr = (TcpState *) instanceData; - struct sockaddr_in sockname; - struct sockaddr_in peername; - struct hostent *hostEntPtr; - socklen_t size = sizeof(struct sockaddr_in); - size_t len = 0; - char buf[TCL_INTEGER_SPACE]; - - if (optionName != NULL) { - len = strlen(optionName); - } - - if ((len > 1) && (optionName[1] == 'e') && - (strncmp(optionName, "-error", len) == 0)) { - socklen_t optlen = sizeof(int); - int err, ret; - - ret = getsockopt(statePtr->fd, SOL_SOCKET, SO_ERROR, - (char *)&err, &optlen); - if (ret < 0) { - err = errno; - } - if (err != 0) { - Tcl_DStringAppend(dsPtr, Tcl_ErrnoMsg(err), -1); - } - return TCL_OK; - } - - if ((len == 0) || - ((len > 1) && (optionName[1] == 'p') && - (strncmp(optionName, "-peername", len) == 0))) { - if (getpeername(statePtr->fd, (struct sockaddr *) &peername, - &size) >= 0) { - if (len == 0) { - Tcl_DStringAppendElement(dsPtr, "-peername"); - Tcl_DStringStartSublist(dsPtr); - } - Tcl_DStringAppendElement(dsPtr, inet_ntoa(peername.sin_addr)); - hostEntPtr = TclpGetHostByAddr( /* INTL: Native. */ - (char *) &peername.sin_addr, - sizeof(peername.sin_addr), AF_INET); - if (hostEntPtr != NULL) { - Tcl_DString ds; - - Tcl_ExternalToUtfDString(NULL, hostEntPtr->h_name, -1, &ds); - Tcl_DStringAppendElement(dsPtr, Tcl_DStringValue(&ds)); - Tcl_DStringFree(&ds); - } else { - Tcl_DStringAppendElement(dsPtr, inet_ntoa(peername.sin_addr)); - } - TclFormatInt(buf, 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). - * Same must be done on win&mac. - */ - - if (len) { - if (interp) { - Tcl_AppendResult(interp, "can't get peername: ", - Tcl_PosixError(interp), NULL); - } - return TCL_ERROR; - } - } - } - - if ((len == 0) || - ((len > 1) && (optionName[1] == 's') && - (strncmp(optionName, "-sockname", len) == 0))) { - if (getsockname(statePtr->fd, (struct sockaddr *) &sockname, - &size) >= 0) { - if (len == 0) { - Tcl_DStringAppendElement(dsPtr, "-sockname"); - Tcl_DStringStartSublist(dsPtr); - } - Tcl_DStringAppendElement(dsPtr, inet_ntoa(sockname.sin_addr)); - if (sockname.sin_addr.s_addr == INADDR_ANY) { - /* - * We don't want to resolve INADDR_ANY; it can sometimes cause - * problems (and never has a name). - */ - - hostEntPtr = NULL; - } else { - hostEntPtr = TclpGetHostByAddr( /* INTL: Native. */ - (char *) &sockname.sin_addr, - sizeof(sockname.sin_addr), AF_INET); - } - if (hostEntPtr != NULL) { - Tcl_DString ds; - - Tcl_ExternalToUtfDString(NULL, hostEntPtr->h_name, -1, &ds); - Tcl_DStringAppendElement(dsPtr, Tcl_DStringValue(&ds)); - Tcl_DStringFree(&ds); - } else { - Tcl_DStringAppendElement(dsPtr, inet_ntoa(sockname.sin_addr)); - } - TclFormatInt(buf, ntohs(sockname.sin_port)); - Tcl_DStringAppendElement(dsPtr, buf); - if (len == 0) { - Tcl_DStringEndSublist(dsPtr); - } else { - return TCL_OK; - } - } else { - if (interp) { - Tcl_AppendResult(interp, "can't get sockname: ", - Tcl_PosixError(interp), NULL); - } - return TCL_ERROR; - } - } - - if (len > 0) { - return Tcl_BadChannelOption(interp, optionName, "peername sockname"); - } - - return TCL_OK; -} - -/* - *---------------------------------------------------------------------- - * - * TcpWatchProc -- - * - * Initialize the notifier to watch the fd from this channel. - * - * Results: - * None. - * - * Side effects: - * Sets up the notifier so that a future event on the channel will be - * seen by Tcl. - * - *---------------------------------------------------------------------- - */ - -static void -TcpWatchProc( - ClientData instanceData, /* The socket state. */ - int mask) /* Events of interest; an OR-ed combination of - * TCL_READABLE, TCL_WRITABLE and - * TCL_EXCEPTION. */ -{ - TcpState *statePtr = (TcpState *) instanceData; - - /* - * Make sure we don't mess with server sockets since they will never be - * readable or writable at the Tcl level. This keeps Tcl scripts from - * interfering with the -accept behavior. - */ - - if (!statePtr->acceptProc) { - if (mask) { - Tcl_CreateFileHandler(statePtr->fd, mask, - (Tcl_FileProc *) Tcl_NotifyChannel, - (ClientData) statePtr->channel); - } else { - Tcl_DeleteFileHandler(statePtr->fd); - } - } -} - -/* - *---------------------------------------------------------------------- - * - * TcpGetHandleProc -- - * - * Called from Tcl_GetChannelHandle to retrieve OS handles from inside a - * TCP socket based channel. - * - * Results: - * Returns TCL_OK with the fd in handlePtr, or TCL_ERROR if there is no - * handle for the specified direction. - * - * Side effects: - * None. - * - *---------------------------------------------------------------------- - */ - - /* ARGSUSED */ -static int -TcpGetHandleProc( - ClientData instanceData, /* The socket state. */ - int direction, /* Not used. */ - ClientData *handlePtr) /* Where to store the handle. */ -{ - TcpState *statePtr = (TcpState *) instanceData; - - *handlePtr = (ClientData) INT2PTR(statePtr->fd); - return TCL_OK; -} - -/* - *---------------------------------------------------------------------- - * - * CreateSocket -- - * - * This function opens a new socket in client or server mode and - * initializes the TcpState structure. - * - * Results: - * Returns a new TcpState, or NULL with an error in the interp's result, - * if interp is not NULL. - * - * Side effects: - * Opens a socket. - * - *---------------------------------------------------------------------- - */ - -static TcpState * -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. NULL - * implies INADDR_ANY */ - 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 and creating a client socket, - * attempt to do an async connect. Otherwise - * do a synchronous connect or bind. */ -{ - int status, sock, asyncConnect, curState; - struct sockaddr_in sockaddr; /* socket address */ - struct sockaddr_in mysockaddr; /* Socket address for client */ - TcpState *statePtr; - const char *errorMsg = NULL; - - sock = -1; - if (!CreateSocketAddress(&sockaddr, host, port, 0, &errorMsg)) { - goto addressError; - } - if ((myaddr != NULL || myport != 0) && - !CreateSocketAddress(&mysockaddr, myaddr, myport, 1, &errorMsg)) { - goto addressError; - } - - sock = socket(AF_INET, SOCK_STREAM, 0); - if (sock < 0) { - goto addressError; - } - - /* - * Set the close-on-exec flag so that the socket will not get inherited by - * child processes. - */ - - fcntl(sock, F_SETFD, FD_CLOEXEC); - - /* - * Set kernel space buffering - */ - - TclSockMinimumBuffers(sock, SOCKET_BUFSIZE); - - asyncConnect = 0; - status = 0; - if (server) { - /* - * Set up to reuse server addresses automatically and bind to the - * specified port. - */ - - status = 1; - (void) setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *) &status, - sizeof(status)); - status = bind(sock, (struct sockaddr *) &sockaddr, - sizeof(struct sockaddr)); - if (status != -1) { - status = listen(sock, SOMAXCONN); - } - } else { - if (myaddr != NULL || myport != 0) { - curState = 1; - (void) setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, - (char *) &curState, sizeof(curState)); - status = bind(sock, (struct sockaddr *) &mysockaddr, - sizeof(struct sockaddr)); - if (status < 0) { - goto bindError; - } - } - - /* - * Attempt to connect. The connect may fail at present with an - * EINPROGRESS but at a later time it will complete. The caller will - * set up a file handler on the socket if she is interested in being - * informed when the connect completes. - */ - - if (async) { - status = TclUnixSetBlockingMode(sock, TCL_MODE_NONBLOCKING); - } else { - status = 0; - } - if (status > -1) { - status = connect(sock, (struct sockaddr *) &sockaddr, - sizeof(sockaddr)); - if (status < 0) { - if (errno == EINPROGRESS) { - asyncConnect = 1; - status = 0; - } - } else { - /* - * Here we are if the connect succeeds. In case of an - * asynchronous connect we have to reset the channel to - * blocking mode. This appears to happen not very often, but - * e.g. on a HP 9000/800 under HP-UX B.11.00 we enter this - * stage. [Bug: 4388] - */ - - if (async) { - status = TclUnixSetBlockingMode(sock, TCL_MODE_BLOCKING); - } - } - } - } - - bindError: - if (status < 0) { - if (interp != NULL) { - Tcl_AppendResult(interp, "couldn't open socket: ", - Tcl_PosixError(interp), NULL); - } - if (sock != -1) { - close(sock); - } - return NULL; - } - - /* - * Allocate a new TcpState for this socket. - */ - - statePtr = (TcpState *) ckalloc((unsigned) sizeof(TcpState)); - statePtr->flags = 0; - if (asyncConnect) { - statePtr->flags = TCP_ASYNC_CONNECT; - } - statePtr->fd = sock; - - return statePtr; - - addressError: - if (sock != -1) { - close(sock); - } - if (interp != NULL) { - Tcl_AppendResult(interp, "couldn't open socket: ", - Tcl_PosixError(interp), NULL); - if (errorMsg != NULL) { - Tcl_AppendResult(interp, " (", errorMsg, ")", NULL); - } - } - return NULL; -} - -/* - *---------------------------------------------------------------------- - * - * 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( - struct sockaddr_in *sockaddrPtr, /* Socket address */ - const char *host, /* Host. NULL implies INADDR_ANY */ - int port, /* Port number */ - int willBind, /* Is this an address to bind() to or - * to connect() to? */ - const char **errorMsgPtr) /* Place to store the error message - * detail, if available. */ -{ -#ifdef HAVE_GETADDRINFO - struct addrinfo hints, *resPtr = NULL; - char *native; - Tcl_DString ds; - int result; - - if (host == NULL) { - sockaddrPtr->sin_family = AF_INET; - sockaddrPtr->sin_addr.s_addr = INADDR_ANY; - addPort: - sockaddrPtr->sin_port = htons((unsigned short) (port & 0xFFFF)); - return 1; - } - - (void) memset(&hints, 0, sizeof(struct addrinfo)); - hints.ai_family = AF_INET; - hints.ai_socktype = SOCK_STREAM; - if (willBind) { - hints.ai_flags |= AI_PASSIVE; - } - - /* - * Note that getaddrinfo() *is* thread-safe. If a platform doesn't get - * that right, it shouldn't use this part of the code. - */ - - native = Tcl_UtfToExternalDString(NULL, host, -1, &ds); - result = getaddrinfo(native, NULL, &hints, &resPtr); - Tcl_DStringFree(&ds); - if (result == 0) { - memcpy(sockaddrPtr, resPtr->ai_addr, sizeof(struct sockaddr_in)); - freeaddrinfo(resPtr); - goto addPort; - } - - /* - * Ought to use gai_strerror() here... - */ - - switch (result) { - case EAI_NONAME: - case EAI_SERVICE: -#if defined(EAI_ADDRFAMILY) && EAI_ADDRFAMILY != EAI_NONAME - case EAI_ADDRFAMILY: -#endif -#if defined(EAI_NODATA) && EAI_NODATA != EAI_NONAME - case EAI_NODATA: -#endif - *errorMsgPtr = gai_strerror(result); - errno = EHOSTUNREACH; - return 0; - case EAI_SYSTEM: - return 0; - default: - *errorMsgPtr = gai_strerror(result); - errno = ENXIO; - return 0; - } -#else /* !HAVE_GETADDRINFO */ - struct in_addr addr; /* For 64/32 bit madness */ - - (void) memset(sockaddrPtr, '\0', sizeof(struct sockaddr_in)); - sockaddrPtr->sin_family = AF_INET; - sockaddrPtr->sin_port = htons((unsigned short) (port & 0xFFFF)); - if (host == NULL) { - addr.s_addr = INADDR_ANY; - } else { - struct hostent *hostent; /* Host database entry */ - Tcl_DString ds; - const char *native; - - if (host == NULL) { - native = NULL; - } else { - native = Tcl_UtfToExternalDString(NULL, host, -1, &ds); - } - addr.s_addr = inet_addr(native); /* INTL: Native. */ - - /* - * This is 0xFFFFFFFF to ensure that it compares as a 32bit -1 on - * either 32 or 64 bits systems. - */ - - if (addr.s_addr == 0xFFFFFFFF) { - hostent = TclpGetHostByName(native); /* INTL: Native. */ - if (hostent != NULL) { - memcpy(&addr, hostent->h_addr_list[0], - (size_t) hostent->h_length); - } else { -#ifdef EHOSTUNREACH - errno = EHOSTUNREACH; -#else /* !EHOSTUNREACH */ -#ifdef ENXIO - errno = ENXIO; -#endif /* ENXIO */ -#endif /* EHOSTUNREACH */ - if (native != NULL) { - Tcl_DStringFree(&ds); - } - return 0; /* Error. */ - } - } - if (native != NULL) { - Tcl_DStringFree(&ds); - } - } - - /* - * 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. */ -#endif /* HAVE_GETADDRINFO */ -} - -/* - *---------------------------------------------------------------------- - * - * Tcl_OpenTcpClient -- - * - * 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. - * - * Side effects: - * Opens a client socket and creates a new channel. - * - *---------------------------------------------------------------------- - */ - -Tcl_Channel -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, attempt to do an asynchronous - * connect. Otherwise we do a blocking - * connect. */ -{ - TcpState *statePtr; - char channelName[16 + TCL_INTEGER_SPACE]; - - /* - * Create a new client socket and wrap it in a channel. - */ - - statePtr = CreateSocket(interp, port, host, 0, myaddr, myport, async); - if (statePtr == NULL) { - return NULL; - } - - statePtr->acceptProc = NULL; - statePtr->acceptProcData = NULL; - - sprintf(channelName, "sock%d", statePtr->fd); - - statePtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName, - (ClientData) statePtr, (TCL_READABLE | TCL_WRITABLE)); - if (Tcl_SetChannelOption(interp, statePtr->channel, "-translation", - "auto crlf") == TCL_ERROR) { - Tcl_Close(NULL, statePtr->channel); - return NULL; - } - return statePtr->channel; -} - -/* - *---------------------------------------------------------------------- - * - * Tcl_MakeTcpClientChannel -- - * - * Creates a Tcl_Channel from an existing client TCP socket. - * - * Results: - * The Tcl_Channel wrapped around the preexisting TCP socket. - * - * Side effects: - * None. - * - *---------------------------------------------------------------------- - */ - -Tcl_Channel -Tcl_MakeTcpClientChannel( - ClientData sock) /* The socket to wrap up into a channel. */ -{ - return MakeTcpClientChannelMode(sock, (TCL_READABLE | TCL_WRITABLE)); -} - -/* - *---------------------------------------------------------------------- - * - * MakeTcpClientChannelMode -- - * - * Creates a Tcl_Channel from an existing client TCP socket - * with given mode. - * - * Results: - * The Tcl_Channel wrapped around the preexisting TCP socket. - * - * Side effects: - * None. - * - *---------------------------------------------------------------------- - */ - -static Tcl_Channel -MakeTcpClientChannelMode( - ClientData sock, /* The socket to wrap up into a channel. */ - int mode) /* ORed combination of TCL_READABLE and - * TCL_WRITABLE to indicate file mode. */ -{ - TcpState *statePtr; - char channelName[16 + TCL_INTEGER_SPACE]; - - statePtr = (TcpState *) ckalloc((unsigned) sizeof(TcpState)); - statePtr->fd = PTR2INT(sock); - statePtr->flags = 0; - statePtr->acceptProc = NULL; - statePtr->acceptProcData = NULL; - - sprintf(channelName, "sock%d", statePtr->fd); - - statePtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName, - (ClientData) statePtr, mode); - if (Tcl_SetChannelOption(NULL, statePtr->channel, "-translation", - "auto crlf") == TCL_ERROR) { - Tcl_Close(NULL, statePtr->channel); - return NULL; - } - return statePtr->channel; -} - -/* - *---------------------------------------------------------------------- - * - * Tcl_OpenTcpServer -- - * - * Opens a TCP server socket and creates a channel around it. - * - * Results: - * The channel or NULL if failed. If an error occurred, an error message - * is left in the interp's result if interp is not NULL. - * - * Side effects: - * Opens a server socket and creates a new channel. - * - *---------------------------------------------------------------------- - */ - -Tcl_Channel -Tcl_OpenTcpServer( - Tcl_Interp *interp, /* For error reporting - may be NULL. */ - int port, /* Port number to open. */ - const char *myHost, /* Name of local host. */ - Tcl_TcpAcceptProc *acceptProc, - /* Callback for accepting connections from new - * clients. */ - ClientData acceptProcData) /* Data for the callback. */ -{ - TcpState *statePtr; - char channelName[16 + TCL_INTEGER_SPACE]; - - /* - * Create a new client socket and wrap it in a channel. - */ - - statePtr = CreateSocket(interp, port, myHost, 1, NULL, 0, 0); - if (statePtr == NULL) { - return NULL; - } - - statePtr->acceptProc = acceptProc; - statePtr->acceptProcData = acceptProcData; - - /* - * Set up the callback mechanism for accepting connections from new - * clients. - */ - - Tcl_CreateFileHandler(statePtr->fd, TCL_READABLE, TcpAccept, - (ClientData) statePtr); - sprintf(channelName, "sock%d", statePtr->fd); - statePtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName, - (ClientData) statePtr, 0); - return statePtr->channel; -} - -/* - *---------------------------------------------------------------------- - * - * TcpAccept -- - * Accept a TCP socket connection. This is called by the event loop. - * - * Results: - * None. - * - * Side effects: - * Creates a new connection socket. Calls the registered callback for the - * connection acceptance mechanism. - * - *---------------------------------------------------------------------- - */ - - /* ARGSUSED */ -static void -TcpAccept( - ClientData data, /* Callback token. */ - int mask) /* Not used. */ -{ - TcpState *sockState; /* Client data of server socket. */ - int newsock; /* The new client socket */ - TcpState *newSockState; /* State for new socket. */ - struct sockaddr_in addr; /* The remote address */ - socklen_t len; /* For accept interface */ - char channelName[16 + TCL_INTEGER_SPACE]; - - sockState = (TcpState *) data; - - len = sizeof(struct sockaddr_in); - newsock = accept(sockState->fd, (struct sockaddr *) &addr, &len); - if (newsock < 0) { - return; - } - - /* - * Set close-on-exec flag to prevent the newly accepted socket from being - * inherited by child processes. - */ - - (void) fcntl(newsock, F_SETFD, FD_CLOEXEC); - - newSockState = (TcpState *) ckalloc((unsigned) sizeof(TcpState)); - - newSockState->flags = 0; - newSockState->fd = newsock; - newSockState->acceptProc = NULL; - newSockState->acceptProcData = NULL; - - sprintf(channelName, "sock%d", newsock); - newSockState->channel = Tcl_CreateChannel(&tcpChannelType, channelName, - (ClientData) newSockState, (TCL_READABLE | TCL_WRITABLE)); - - Tcl_SetChannelOption(NULL, newSockState->channel, "-translation", - "auto crlf"); - - if (sockState->acceptProc != NULL) { - (*sockState->acceptProc)(sockState->acceptProcData, - newSockState->channel, inet_ntoa(addr.sin_addr), - ntohs(addr.sin_port)); - } -} - -/* - *---------------------------------------------------------------------- - * * TclpGetDefaultStdChannel -- * * Creates channels for standard input, standard output or standard error @@ -2834,7 +1734,7 @@ TclpGetDefaultStdChannel( Tcl_Channel channel = NULL; int fd = 0; /* Initializations needed to prevent */ int mode = 0; /* compiler warning (used before set). */ - char *bufMode = NULL; + const char *bufMode = NULL; /* * Some #def's to make the code a little clearer! @@ -2879,7 +1779,7 @@ TclpGetDefaultStdChannel( #undef ZERO_OFFSET #undef ERROR_OFFSET - channel = Tcl_MakeFileChannel((ClientData) INT2PTR(fd), mode); + channel = Tcl_MakeFileChannel(INT2PTR(fd), mode); if (channel == NULL) { return NULL; } @@ -2939,16 +1839,20 @@ Tcl_GetOpenFile( FILE *f; chan = Tcl_GetChannel(interp, chanID, &chanMode); - if (chan == (Tcl_Channel) NULL) { + if (chan == NULL) { return TCL_ERROR; } if ((forWriting) && ((chanMode & TCL_WRITABLE) == 0)) { Tcl_AppendResult(interp, "\"", chanID, "\" wasn't opened for writing", NULL); + Tcl_SetErrorCode(interp, "TCL", "VALUE", "CHANNEL", "NOT_WRITABLE", + NULL); return TCL_ERROR; } else if ((!forWriting) && ((chanMode & TCL_READABLE) == 0)) { Tcl_AppendResult(interp, "\"", chanID, "\" wasn't opened for reading", NULL); + Tcl_SetErrorCode(interp, "TCL", "VALUE", "CHANNEL", "NOT_READABLE", + NULL); return TCL_ERROR; } @@ -2963,11 +1867,10 @@ Tcl_GetOpenFile( #ifdef SUPPORTS_TTY || (chanTypePtr == &ttyChannelType) #endif /* SUPPORTS_TTY */ - || (chanTypePtr == &tcpChannelType) + || (strcmp(chanTypePtr->typeName, "tcp") == 0) || (strcmp(chanTypePtr->typeName, "pipe") == 0)) { if (Tcl_GetChannelHandle(chan, - (forWriting ? TCL_WRITABLE : TCL_READABLE), - (ClientData*) &data) == TCL_OK) { + (forWriting ? TCL_WRITABLE : TCL_READABLE), &data) == TCL_OK) { fd = PTR2INT(data); /* @@ -2980,15 +1883,19 @@ Tcl_GetOpenFile( if (f == NULL) { Tcl_AppendResult(interp, "cannot get a FILE * for \"", chanID, "\"", NULL); + Tcl_SetErrorCode(interp, "TCL", "VALUE", "CHANNEL", + "FILE_FAILURE", NULL); return TCL_ERROR; } - *filePtr = (ClientData) f; + *filePtr = f; return TCL_OK; } } Tcl_AppendResult(interp, "\"", chanID, "\" cannot be used to get a FILE *", NULL); + Tcl_SetErrorCode(interp, "TCL", "VALUE", "CHANNEL", "NO_DESCRIPTOR", + NULL); return TCL_ERROR; } @@ -3034,7 +1941,7 @@ TclUnixWaitForFile( int numFound, result = 0; fd_set readableMask; fd_set writableMask; - fd_set exceptionalMask; + fd_set exceptionMask; #ifndef _DARWIN_C_SOURCE /* @@ -3075,7 +1982,7 @@ TclUnixWaitForFile( FD_ZERO(&readableMask); FD_ZERO(&writableMask); - FD_ZERO(&exceptionalMask); + FD_ZERO(&exceptionMask); /* * Loop in a mini-event loop of our own, waiting for either the file to @@ -3100,14 +2007,14 @@ TclUnixWaitForFile( * Setup the select masks for the fd. */ - if (mask & TCL_READABLE) { + if (mask & TCL_READABLE) { FD_SET(fd, &readableMask); } - if (mask & TCL_WRITABLE) { + if (mask & TCL_WRITABLE) { FD_SET(fd, &writableMask); } if (mask & TCL_EXCEPTION) { - FD_SET(fd, &exceptionalMask); + FD_SET(fd, &exceptionMask); } /* @@ -3115,15 +2022,15 @@ TclUnixWaitForFile( */ numFound = select(fd + 1, &readableMask, &writableMask, - &exceptionalMask, timeoutPtr); + &exceptionMask, timeoutPtr); if (numFound == 1) { - if (FD_ISSET(fd, &readableMask)) { + if (FD_ISSET(fd, &readableMask)) { SET_BITS(result, TCL_READABLE); } - if (FD_ISSET(fd, &writableMask)) { + if (FD_ISSET(fd, &writableMask)) { SET_BITS(result, TCL_WRITABLE); } - if (FD_ISSET(fd, &exceptionalMask)) { + if (FD_ISSET(fd, &exceptionMask)) { SET_BITS(result, TCL_EXCEPTION); } result &= mask; @@ -3176,7 +2083,7 @@ FileTruncateProc( ClientData instanceData, Tcl_WideInt length) { - FileState *fsPtr = (FileState *) instanceData; + FileState *fsPtr = instanceData; int result; #ifdef HAVE_TYPE_OFF64_T @@ -3199,7 +2106,5 @@ FileTruncateProc( * mode: c * c-basic-offset: 4 * fill-column: 78 - * tab-width: 8 - * indent-tabs-mode: nil * End: */ |