[25] | 1 | /* |
---|
| 2 | * tclUnixChan.c |
---|
| 3 | * |
---|
| 4 | * Common channel driver for Unix channels based on files, command pipes |
---|
| 5 | * and TCP sockets. |
---|
| 6 | * |
---|
| 7 | * Copyright (c) 1995-1997 Sun Microsystems, Inc. |
---|
| 8 | * Copyright (c) 1998-1999 by Scriptics Corporation. |
---|
| 9 | * |
---|
| 10 | * See the file "license.terms" for information on usage and redistribution of |
---|
| 11 | * this file, and for a DISCLAIMER OF ALL WARRANTIES. |
---|
| 12 | * |
---|
| 13 | * RCS: @(#) $Id: tclUnixChan.c,v 1.93 2008/03/03 14:54:43 rmax Exp $ |
---|
| 14 | */ |
---|
| 15 | |
---|
| 16 | #include "tclInt.h" /* Internal definitions for Tcl. */ |
---|
| 17 | #include "tclIO.h" /* To get Channel type declaration. */ |
---|
| 18 | |
---|
| 19 | #define SUPPORTS_TTY |
---|
| 20 | |
---|
| 21 | #undef DIRECT_BAUD |
---|
| 22 | #ifdef B4800 |
---|
| 23 | # if (B4800 == 4800) |
---|
| 24 | # define DIRECT_BAUD |
---|
| 25 | # endif /* B4800 == 4800 */ |
---|
| 26 | #endif /* B4800 */ |
---|
| 27 | |
---|
| 28 | #ifdef USE_TERMIOS |
---|
| 29 | # include <termios.h> |
---|
| 30 | # ifdef HAVE_SYS_IOCTL_H |
---|
| 31 | # include <sys/ioctl.h> |
---|
| 32 | # endif /* HAVE_SYS_IOCTL_H */ |
---|
| 33 | # ifdef HAVE_SYS_MODEM_H |
---|
| 34 | # include <sys/modem.h> |
---|
| 35 | # endif /* HAVE_SYS_MODEM_H */ |
---|
| 36 | # define IOSTATE struct termios |
---|
| 37 | # define GETIOSTATE(fd, statePtr) tcgetattr((fd), (statePtr)) |
---|
| 38 | # define SETIOSTATE(fd, statePtr) tcsetattr((fd), TCSADRAIN, (statePtr)) |
---|
| 39 | # define GETCONTROL(fd, intPtr) ioctl((fd), TIOCMGET, (intPtr)) |
---|
| 40 | # define SETCONTROL(fd, intPtr) ioctl((fd), TIOCMSET, (intPtr)) |
---|
| 41 | |
---|
| 42 | # ifdef FIONREAD |
---|
| 43 | # define GETREADQUEUE(fd, int) ioctl((fd), FIONREAD, &(int)) |
---|
| 44 | # elif defined(FIORDCHK) |
---|
| 45 | # define GETREADQUEUE(fd, int) int = ioctl((fd), FIORDCHK, NULL) |
---|
| 46 | # endif /* FIONREAD */ |
---|
| 47 | # ifdef TIOCOUTQ |
---|
| 48 | # define GETWRITEQUEUE(fd, int) ioctl((fd), TIOCOUTQ, &(int)) |
---|
| 49 | # endif /* TIOCOUTQ */ |
---|
| 50 | # if defined(TIOCSBRK) && defined(TIOCCBRK) |
---|
| 51 | |
---|
| 52 | /* |
---|
| 53 | * Can't use ?: operator below because that messes up types on either Linux or |
---|
| 54 | * Solaris (the two are mutually exclusive!) |
---|
| 55 | */ |
---|
| 56 | |
---|
| 57 | # define SETBREAK(fd, flag) \ |
---|
| 58 | if (flag) { \ |
---|
| 59 | ioctl((fd), TIOCSBRK, NULL); \ |
---|
| 60 | } else { \ |
---|
| 61 | ioctl((fd), TIOCCBRK, NULL); \ |
---|
| 62 | } |
---|
| 63 | # endif /* TIOCSBRK&TIOCCBRK */ |
---|
| 64 | # if !defined(CRTSCTS) && defined(CNEW_RTSCTS) |
---|
| 65 | # define CRTSCTS CNEW_RTSCTS |
---|
| 66 | # endif /* !CRTSCTS&CNEW_RTSCTS */ |
---|
| 67 | # if !defined(PAREXT) && defined(CMSPAR) |
---|
| 68 | # define PAREXT CMSPAR |
---|
| 69 | # endif /* !PAREXT&&CMSPAR */ |
---|
| 70 | #else /* !USE_TERMIOS */ |
---|
| 71 | |
---|
| 72 | #ifdef USE_TERMIO |
---|
| 73 | # include <termio.h> |
---|
| 74 | # define IOSTATE struct termio |
---|
| 75 | # define GETIOSTATE(fd, statePtr) ioctl((fd), TCGETA, (statePtr)) |
---|
| 76 | # define SETIOSTATE(fd, statePtr) ioctl((fd), TCSETAW, (statePtr)) |
---|
| 77 | #else /* !USE_TERMIO */ |
---|
| 78 | |
---|
| 79 | #ifdef USE_SGTTY |
---|
| 80 | # include <sgtty.h> |
---|
| 81 | # define IOSTATE struct sgttyb |
---|
| 82 | # define GETIOSTATE(fd, statePtr) ioctl((fd), TIOCGETP, (statePtr)) |
---|
| 83 | # define SETIOSTATE(fd, statePtr) ioctl((fd), TIOCSETP, (statePtr)) |
---|
| 84 | #else /* !USE_SGTTY */ |
---|
| 85 | # undef SUPPORTS_TTY |
---|
| 86 | #endif /* !USE_SGTTY */ |
---|
| 87 | |
---|
| 88 | #endif /* !USE_TERMIO */ |
---|
| 89 | #endif /* !USE_TERMIOS */ |
---|
| 90 | |
---|
| 91 | /* |
---|
| 92 | * Helper macros to make parts of this file clearer. The macros do exactly |
---|
| 93 | * what they say on the tin. :-) They also only ever refer to their arguments |
---|
| 94 | * once, and so can be used without regard to side effects. |
---|
| 95 | */ |
---|
| 96 | |
---|
| 97 | #define SET_BITS(var, bits) ((var) |= (bits)) |
---|
| 98 | #define CLEAR_BITS(var, bits) ((var) &= ~(bits)) |
---|
| 99 | |
---|
| 100 | /* |
---|
| 101 | * This structure describes per-instance state of a file based channel. |
---|
| 102 | */ |
---|
| 103 | |
---|
| 104 | typedef struct FileState { |
---|
| 105 | Tcl_Channel channel; /* Channel associated with this file. */ |
---|
| 106 | int fd; /* File handle. */ |
---|
| 107 | int validMask; /* OR'ed combination of TCL_READABLE, |
---|
| 108 | * TCL_WRITABLE, or TCL_EXCEPTION: indicates |
---|
| 109 | * which operations are valid on the file. */ |
---|
| 110 | } FileState; |
---|
| 111 | |
---|
| 112 | #ifdef SUPPORTS_TTY |
---|
| 113 | |
---|
| 114 | /* |
---|
| 115 | * The following structure describes per-instance state of a tty-based |
---|
| 116 | * channel. |
---|
| 117 | */ |
---|
| 118 | |
---|
| 119 | typedef struct TtyState { |
---|
| 120 | FileState fs; /* Per-instance state of the file descriptor. |
---|
| 121 | * Must be the first field. */ |
---|
| 122 | IOSTATE savedState; /* Initial state of device. Used to reset |
---|
| 123 | * state when device closed. */ |
---|
| 124 | } TtyState; |
---|
| 125 | |
---|
| 126 | /* |
---|
| 127 | * The following structure is used to set or get the serial port attributes in |
---|
| 128 | * a platform-independant manner. |
---|
| 129 | */ |
---|
| 130 | |
---|
| 131 | typedef struct TtyAttrs { |
---|
| 132 | int baud; |
---|
| 133 | int parity; |
---|
| 134 | int data; |
---|
| 135 | int stop; |
---|
| 136 | } TtyAttrs; |
---|
| 137 | |
---|
| 138 | #endif /* !SUPPORTS_TTY */ |
---|
| 139 | |
---|
| 140 | #define UNSUPPORTED_OPTION(detail) \ |
---|
| 141 | if (interp) { \ |
---|
| 142 | Tcl_AppendResult(interp, (detail), \ |
---|
| 143 | " not supported for this platform", NULL); \ |
---|
| 144 | } |
---|
| 145 | |
---|
| 146 | /* |
---|
| 147 | * This structure describes per-instance state of a tcp based channel. |
---|
| 148 | */ |
---|
| 149 | |
---|
| 150 | typedef struct TcpState { |
---|
| 151 | Tcl_Channel channel; /* Channel associated with this file. */ |
---|
| 152 | int fd; /* The socket itself. */ |
---|
| 153 | int flags; /* ORed combination of the bitfields defined |
---|
| 154 | * below. */ |
---|
| 155 | Tcl_TcpAcceptProc *acceptProc; |
---|
| 156 | /* Proc to call on accept. */ |
---|
| 157 | ClientData acceptProcData; /* The data for the accept proc. */ |
---|
| 158 | } TcpState; |
---|
| 159 | |
---|
| 160 | /* |
---|
| 161 | * These bits may be ORed together into the "flags" field of a TcpState |
---|
| 162 | * structure. |
---|
| 163 | */ |
---|
| 164 | |
---|
| 165 | #define TCP_ASYNC_SOCKET (1<<0) /* Asynchronous socket. */ |
---|
| 166 | #define TCP_ASYNC_CONNECT (1<<1) /* Async connect in progress. */ |
---|
| 167 | |
---|
| 168 | /* |
---|
| 169 | * The following defines the maximum length of the listen queue. This is the |
---|
| 170 | * number of outstanding yet-to-be-serviced requests for a connection on a |
---|
| 171 | * server socket, more than this number of outstanding requests and the |
---|
| 172 | * connection request will fail. |
---|
| 173 | */ |
---|
| 174 | |
---|
| 175 | #ifndef SOMAXCONN |
---|
| 176 | # define SOMAXCONN 100 |
---|
| 177 | #endif /* SOMAXCONN */ |
---|
| 178 | |
---|
| 179 | #if (SOMAXCONN < 100) |
---|
| 180 | # undef SOMAXCONN |
---|
| 181 | # define SOMAXCONN 100 |
---|
| 182 | #endif /* SOMAXCONN < 100 */ |
---|
| 183 | |
---|
| 184 | /* |
---|
| 185 | * The following defines how much buffer space the kernel should maintain for |
---|
| 186 | * a socket. |
---|
| 187 | */ |
---|
| 188 | |
---|
| 189 | #define SOCKET_BUFSIZE 4096 |
---|
| 190 | |
---|
| 191 | /* |
---|
| 192 | * Static routines for this file: |
---|
| 193 | */ |
---|
| 194 | |
---|
| 195 | static TcpState * CreateSocket(Tcl_Interp *interp, int port, |
---|
| 196 | const char *host, int server, const char *myaddr, |
---|
| 197 | int myport, int async); |
---|
| 198 | static int CreateSocketAddress(struct sockaddr_in *sockaddrPtr, |
---|
| 199 | const char *host, int port, int willBind, |
---|
| 200 | const char **errorMsgPtr); |
---|
| 201 | static int FileBlockModeProc(ClientData instanceData, int mode); |
---|
| 202 | static int FileCloseProc(ClientData instanceData, |
---|
| 203 | Tcl_Interp *interp); |
---|
| 204 | static int FileGetHandleProc(ClientData instanceData, |
---|
| 205 | int direction, ClientData *handlePtr); |
---|
| 206 | static int FileInputProc(ClientData instanceData, char *buf, |
---|
| 207 | int toRead, int *errorCode); |
---|
| 208 | static int FileOutputProc(ClientData instanceData, |
---|
| 209 | const char *buf, int toWrite, int *errorCode); |
---|
| 210 | static int FileSeekProc(ClientData instanceData, long offset, |
---|
| 211 | int mode, int *errorCode); |
---|
| 212 | static int FileTruncateProc(ClientData instanceData, |
---|
| 213 | Tcl_WideInt length); |
---|
| 214 | static Tcl_WideInt FileWideSeekProc(ClientData instanceData, |
---|
| 215 | Tcl_WideInt offset, int mode, int *errorCode); |
---|
| 216 | static void FileWatchProc(ClientData instanceData, int mask); |
---|
| 217 | static void TcpAccept(ClientData data, int mask); |
---|
| 218 | static int TcpBlockModeProc(ClientData data, int mode); |
---|
| 219 | static int TcpCloseProc(ClientData instanceData, |
---|
| 220 | Tcl_Interp *interp); |
---|
| 221 | static int TcpGetHandleProc(ClientData instanceData, |
---|
| 222 | int direction, ClientData *handlePtr); |
---|
| 223 | static int TcpGetOptionProc(ClientData instanceData, |
---|
| 224 | Tcl_Interp *interp, const char *optionName, |
---|
| 225 | Tcl_DString *dsPtr); |
---|
| 226 | static int TcpInputProc(ClientData instanceData, char *buf, |
---|
| 227 | int toRead, int *errorCode); |
---|
| 228 | static int TcpOutputProc(ClientData instanceData, |
---|
| 229 | const char *buf, int toWrite, int *errorCode); |
---|
| 230 | static void TcpWatchProc(ClientData instanceData, int mask); |
---|
| 231 | #ifdef SUPPORTS_TTY |
---|
| 232 | static void TtyGetAttributes(int fd, TtyAttrs *ttyPtr); |
---|
| 233 | static int TtyGetOptionProc(ClientData instanceData, |
---|
| 234 | Tcl_Interp *interp, const char *optionName, |
---|
| 235 | Tcl_DString *dsPtr); |
---|
| 236 | #ifndef DIRECT_BAUD |
---|
| 237 | static int TtyGetBaud(unsigned long speed); |
---|
| 238 | static unsigned long TtyGetSpeed(int baud); |
---|
| 239 | #endif /* DIRECT_BAUD */ |
---|
| 240 | static FileState * TtyInit(int fd, int initialize); |
---|
| 241 | static void TtyModemStatusStr(int status, Tcl_DString *dsPtr); |
---|
| 242 | static int TtyParseMode(Tcl_Interp *interp, const char *mode, |
---|
| 243 | int *speedPtr, int *parityPtr, int *dataPtr, |
---|
| 244 | int *stopPtr); |
---|
| 245 | static void TtySetAttributes(int fd, TtyAttrs *ttyPtr); |
---|
| 246 | static int TtySetOptionProc(ClientData instanceData, |
---|
| 247 | Tcl_Interp *interp, const char *optionName, |
---|
| 248 | const char *value); |
---|
| 249 | #endif /* SUPPORTS_TTY */ |
---|
| 250 | static int WaitForConnect(TcpState *statePtr, int *errorCodePtr); |
---|
| 251 | static Tcl_Channel MakeTcpClientChannelMode(ClientData tcpSocket, |
---|
| 252 | int mode); |
---|
| 253 | |
---|
| 254 | /* |
---|
| 255 | * This structure describes the channel type structure for file based IO: |
---|
| 256 | */ |
---|
| 257 | |
---|
| 258 | static Tcl_ChannelType fileChannelType = { |
---|
| 259 | "file", /* Type name. */ |
---|
| 260 | TCL_CHANNEL_VERSION_5, /* v5 channel */ |
---|
| 261 | FileCloseProc, /* Close proc. */ |
---|
| 262 | FileInputProc, /* Input proc. */ |
---|
| 263 | FileOutputProc, /* Output proc. */ |
---|
| 264 | FileSeekProc, /* Seek proc. */ |
---|
| 265 | NULL, /* Set option proc. */ |
---|
| 266 | NULL, /* Get option proc. */ |
---|
| 267 | FileWatchProc, /* Initialize notifier. */ |
---|
| 268 | FileGetHandleProc, /* Get OS handles out of channel. */ |
---|
| 269 | NULL, /* close2proc. */ |
---|
| 270 | FileBlockModeProc, /* Set blocking or non-blocking mode.*/ |
---|
| 271 | NULL, /* flush proc. */ |
---|
| 272 | NULL, /* handler proc. */ |
---|
| 273 | FileWideSeekProc, /* wide seek proc. */ |
---|
| 274 | NULL, |
---|
| 275 | FileTruncateProc, /* truncate proc. */ |
---|
| 276 | }; |
---|
| 277 | |
---|
| 278 | #ifdef SUPPORTS_TTY |
---|
| 279 | /* |
---|
| 280 | * This structure describes the channel type structure for serial IO. |
---|
| 281 | * Note that this type is a subclass of the "file" type. |
---|
| 282 | */ |
---|
| 283 | |
---|
| 284 | static Tcl_ChannelType ttyChannelType = { |
---|
| 285 | "tty", /* Type name. */ |
---|
| 286 | TCL_CHANNEL_VERSION_5, /* v5 channel */ |
---|
| 287 | FileCloseProc, /* Close proc. */ |
---|
| 288 | FileInputProc, /* Input proc. */ |
---|
| 289 | FileOutputProc, /* Output proc. */ |
---|
| 290 | NULL, /* Seek proc. */ |
---|
| 291 | TtySetOptionProc, /* Set option proc. */ |
---|
| 292 | TtyGetOptionProc, /* Get option proc. */ |
---|
| 293 | FileWatchProc, /* Initialize notifier. */ |
---|
| 294 | FileGetHandleProc, /* Get OS handles out of channel. */ |
---|
| 295 | NULL, /* close2proc. */ |
---|
| 296 | FileBlockModeProc, /* Set blocking or non-blocking mode.*/ |
---|
| 297 | NULL, /* flush proc. */ |
---|
| 298 | NULL, /* handler proc. */ |
---|
| 299 | NULL, /* wide seek proc. */ |
---|
| 300 | NULL, /* thread action proc. */ |
---|
| 301 | NULL, /* truncate proc. */ |
---|
| 302 | }; |
---|
| 303 | #endif /* SUPPORTS_TTY */ |
---|
| 304 | |
---|
| 305 | /* |
---|
| 306 | * This structure describes the channel type structure for TCP socket |
---|
| 307 | * based IO: |
---|
| 308 | */ |
---|
| 309 | |
---|
| 310 | static Tcl_ChannelType tcpChannelType = { |
---|
| 311 | "tcp", /* Type name. */ |
---|
| 312 | TCL_CHANNEL_VERSION_5, /* v5 channel */ |
---|
| 313 | TcpCloseProc, /* Close proc. */ |
---|
| 314 | TcpInputProc, /* Input proc. */ |
---|
| 315 | TcpOutputProc, /* Output proc. */ |
---|
| 316 | NULL, /* Seek proc. */ |
---|
| 317 | NULL, /* Set option proc. */ |
---|
| 318 | TcpGetOptionProc, /* Get option proc. */ |
---|
| 319 | TcpWatchProc, /* Initialize notifier. */ |
---|
| 320 | TcpGetHandleProc, /* Get OS handles out of channel. */ |
---|
| 321 | NULL, /* close2proc. */ |
---|
| 322 | TcpBlockModeProc, /* Set blocking or non-blocking mode.*/ |
---|
| 323 | NULL, /* flush proc. */ |
---|
| 324 | NULL, /* handler proc. */ |
---|
| 325 | NULL, /* wide seek proc. */ |
---|
| 326 | NULL, /* thread action proc. */ |
---|
| 327 | NULL, /* truncate proc. */ |
---|
| 328 | }; |
---|
| 329 | |
---|
| 330 | /* |
---|
| 331 | *---------------------------------------------------------------------- |
---|
| 332 | * |
---|
| 333 | * FileBlockModeProc -- |
---|
| 334 | * |
---|
| 335 | * Helper function to set blocking and nonblocking modes on a file based |
---|
| 336 | * channel. Invoked by generic IO level code. |
---|
| 337 | * |
---|
| 338 | * Results: |
---|
| 339 | * 0 if successful, errno when failed. |
---|
| 340 | * |
---|
| 341 | * Side effects: |
---|
| 342 | * Sets the device into blocking or non-blocking mode. |
---|
| 343 | * |
---|
| 344 | *---------------------------------------------------------------------- |
---|
| 345 | */ |
---|
| 346 | |
---|
| 347 | /* ARGSUSED */ |
---|
| 348 | static int |
---|
| 349 | FileBlockModeProc( |
---|
| 350 | ClientData instanceData, /* File state. */ |
---|
| 351 | int mode) /* The mode to set. Can be one of |
---|
| 352 | * TCL_MODE_BLOCKING or |
---|
| 353 | * TCL_MODE_NONBLOCKING. */ |
---|
| 354 | { |
---|
| 355 | FileState *fsPtr = (FileState *) instanceData; |
---|
| 356 | |
---|
| 357 | if (TclUnixSetBlockingMode(fsPtr->fd, mode) < 0) { |
---|
| 358 | return errno; |
---|
| 359 | } |
---|
| 360 | |
---|
| 361 | return 0; |
---|
| 362 | } |
---|
| 363 | |
---|
| 364 | /* |
---|
| 365 | *---------------------------------------------------------------------- |
---|
| 366 | * |
---|
| 367 | * FileInputProc -- |
---|
| 368 | * |
---|
| 369 | * This function is invoked from the generic IO level to read input from |
---|
| 370 | * a file based channel. |
---|
| 371 | * |
---|
| 372 | * Results: |
---|
| 373 | * The number of bytes read is returned or -1 on error. An output |
---|
| 374 | * argument contains a POSIX error code if an error occurs, or zero. |
---|
| 375 | * |
---|
| 376 | * Side effects: |
---|
| 377 | * Reads input from the input device of the channel. |
---|
| 378 | * |
---|
| 379 | *---------------------------------------------------------------------- |
---|
| 380 | */ |
---|
| 381 | |
---|
| 382 | static int |
---|
| 383 | FileInputProc( |
---|
| 384 | ClientData instanceData, /* File state. */ |
---|
| 385 | char *buf, /* Where to store data read. */ |
---|
| 386 | int toRead, /* How much space is available in the |
---|
| 387 | * buffer? */ |
---|
| 388 | int *errorCodePtr) /* Where to store error code. */ |
---|
| 389 | { |
---|
| 390 | FileState *fsPtr = (FileState *) instanceData; |
---|
| 391 | int bytesRead; /* How many bytes were actually read from the |
---|
| 392 | * input device? */ |
---|
| 393 | |
---|
| 394 | *errorCodePtr = 0; |
---|
| 395 | |
---|
| 396 | /* |
---|
| 397 | * Assume there is always enough input available. This will block |
---|
| 398 | * appropriately, and read will unblock as soon as a short read is |
---|
| 399 | * possible, if the channel is in blocking mode. If the channel is |
---|
| 400 | * nonblocking, the read will never block. |
---|
| 401 | */ |
---|
| 402 | |
---|
| 403 | bytesRead = read(fsPtr->fd, buf, (size_t) toRead); |
---|
| 404 | if (bytesRead > -1) { |
---|
| 405 | return bytesRead; |
---|
| 406 | } |
---|
| 407 | *errorCodePtr = errno; |
---|
| 408 | return -1; |
---|
| 409 | } |
---|
| 410 | |
---|
| 411 | /* |
---|
| 412 | *---------------------------------------------------------------------- |
---|
| 413 | * |
---|
| 414 | * FileOutputProc-- |
---|
| 415 | * |
---|
| 416 | * This function is invoked from the generic IO level to write output to |
---|
| 417 | * a file channel. |
---|
| 418 | * |
---|
| 419 | * Results: |
---|
| 420 | * The number of bytes written is returned or -1 on error. An output |
---|
| 421 | * argument contains a POSIX error code if an error occurred, or zero. |
---|
| 422 | * |
---|
| 423 | * Side effects: |
---|
| 424 | * Writes output on the output device of the channel. |
---|
| 425 | * |
---|
| 426 | *---------------------------------------------------------------------- |
---|
| 427 | */ |
---|
| 428 | |
---|
| 429 | static int |
---|
| 430 | FileOutputProc( |
---|
| 431 | ClientData instanceData, /* File state. */ |
---|
| 432 | const char *buf, /* The data buffer. */ |
---|
| 433 | int toWrite, /* How many bytes to write? */ |
---|
| 434 | int *errorCodePtr) /* Where to store error code. */ |
---|
| 435 | { |
---|
| 436 | FileState *fsPtr = (FileState *) instanceData; |
---|
| 437 | int written; |
---|
| 438 | |
---|
| 439 | *errorCodePtr = 0; |
---|
| 440 | |
---|
| 441 | if (toWrite == 0) { |
---|
| 442 | /* |
---|
| 443 | * SF Tcl Bug 465765. Do not try to write nothing into a file. STREAM |
---|
| 444 | * based implementations will considers this as EOF (if there is a |
---|
| 445 | * pipe behind the file). |
---|
| 446 | */ |
---|
| 447 | |
---|
| 448 | return 0; |
---|
| 449 | } |
---|
| 450 | written = write(fsPtr->fd, buf, (size_t) toWrite); |
---|
| 451 | if (written > -1) { |
---|
| 452 | return written; |
---|
| 453 | } |
---|
| 454 | *errorCodePtr = errno; |
---|
| 455 | return -1; |
---|
| 456 | } |
---|
| 457 | |
---|
| 458 | /* |
---|
| 459 | *---------------------------------------------------------------------- |
---|
| 460 | * |
---|
| 461 | * FileCloseProc -- |
---|
| 462 | * |
---|
| 463 | * This function is called from the generic IO level to perform |
---|
| 464 | * channel-type-specific cleanup when a file based channel is closed. |
---|
| 465 | * |
---|
| 466 | * Results: |
---|
| 467 | * 0 if successful, errno if failed. |
---|
| 468 | * |
---|
| 469 | * Side effects: |
---|
| 470 | * Closes the device of the channel. |
---|
| 471 | * |
---|
| 472 | *---------------------------------------------------------------------- |
---|
| 473 | */ |
---|
| 474 | |
---|
| 475 | static int |
---|
| 476 | FileCloseProc( |
---|
| 477 | ClientData instanceData, /* File state. */ |
---|
| 478 | Tcl_Interp *interp) /* For error reporting - unused. */ |
---|
| 479 | { |
---|
| 480 | FileState *fsPtr = (FileState *) instanceData; |
---|
| 481 | int errorCode = 0; |
---|
| 482 | |
---|
| 483 | Tcl_DeleteFileHandler(fsPtr->fd); |
---|
| 484 | |
---|
| 485 | /* |
---|
| 486 | * Do not close standard channels while in thread-exit. |
---|
| 487 | */ |
---|
| 488 | |
---|
| 489 | if (!TclInThreadExit() |
---|
| 490 | || ((fsPtr->fd != 0) && (fsPtr->fd != 1) && (fsPtr->fd != 2))) { |
---|
| 491 | if (close(fsPtr->fd) < 0) { |
---|
| 492 | errorCode = errno; |
---|
| 493 | } |
---|
| 494 | } |
---|
| 495 | ckfree((char *) fsPtr); |
---|
| 496 | return errorCode; |
---|
| 497 | } |
---|
| 498 | |
---|
| 499 | /* |
---|
| 500 | *---------------------------------------------------------------------- |
---|
| 501 | * |
---|
| 502 | * FileSeekProc -- |
---|
| 503 | * |
---|
| 504 | * This function is called by the generic IO level to move the access |
---|
| 505 | * point in a file based channel. |
---|
| 506 | * |
---|
| 507 | * Results: |
---|
| 508 | * -1 if failed, the new position if successful. An output argument |
---|
| 509 | * contains the POSIX error code if an error occurred, or zero. |
---|
| 510 | * |
---|
| 511 | * Side effects: |
---|
| 512 | * Moves the location at which the channel will be accessed in future |
---|
| 513 | * operations. |
---|
| 514 | * |
---|
| 515 | *---------------------------------------------------------------------- |
---|
| 516 | */ |
---|
| 517 | |
---|
| 518 | static int |
---|
| 519 | FileSeekProc( |
---|
| 520 | ClientData instanceData, /* File state. */ |
---|
| 521 | long offset, /* Offset to seek to. */ |
---|
| 522 | int mode, /* Relative to where should we seek? Can be |
---|
| 523 | * one of SEEK_START, SEEK_SET or SEEK_END. */ |
---|
| 524 | int *errorCodePtr) /* To store error code. */ |
---|
| 525 | { |
---|
| 526 | FileState *fsPtr = (FileState *) instanceData; |
---|
| 527 | Tcl_WideInt oldLoc, newLoc; |
---|
| 528 | |
---|
| 529 | /* |
---|
| 530 | * Save our current place in case we need to roll-back the seek. |
---|
| 531 | */ |
---|
| 532 | |
---|
| 533 | oldLoc = TclOSseek(fsPtr->fd, (Tcl_SeekOffset) 0, SEEK_CUR); |
---|
| 534 | if (oldLoc == Tcl_LongAsWide(-1)) { |
---|
| 535 | /* |
---|
| 536 | * Bad things are happening. Error out... |
---|
| 537 | */ |
---|
| 538 | |
---|
| 539 | *errorCodePtr = errno; |
---|
| 540 | return -1; |
---|
| 541 | } |
---|
| 542 | |
---|
| 543 | newLoc = TclOSseek(fsPtr->fd, (Tcl_SeekOffset) offset, mode); |
---|
| 544 | |
---|
| 545 | /* |
---|
| 546 | * Check for expressability in our return type, and roll-back otherwise. |
---|
| 547 | */ |
---|
| 548 | |
---|
| 549 | if (newLoc > Tcl_LongAsWide(INT_MAX)) { |
---|
| 550 | *errorCodePtr = EOVERFLOW; |
---|
| 551 | TclOSseek(fsPtr->fd, (Tcl_SeekOffset) oldLoc, SEEK_SET); |
---|
| 552 | return -1; |
---|
| 553 | } else { |
---|
| 554 | *errorCodePtr = (newLoc == Tcl_LongAsWide(-1)) ? errno : 0; |
---|
| 555 | } |
---|
| 556 | return (int) Tcl_WideAsLong(newLoc); |
---|
| 557 | } |
---|
| 558 | |
---|
| 559 | /* |
---|
| 560 | *---------------------------------------------------------------------- |
---|
| 561 | * |
---|
| 562 | * FileWideSeekProc -- |
---|
| 563 | * |
---|
| 564 | * This function is called by the generic IO level to move the access |
---|
| 565 | * point in a file based channel, with offsets expressed as wide |
---|
| 566 | * integers. |
---|
| 567 | * |
---|
| 568 | * Results: |
---|
| 569 | * -1 if failed, the new position if successful. An output argument |
---|
| 570 | * contains the POSIX error code if an error occurred, or zero. |
---|
| 571 | * |
---|
| 572 | * Side effects: |
---|
| 573 | * Moves the location at which the channel will be accessed in future |
---|
| 574 | * operations. |
---|
| 575 | * |
---|
| 576 | *---------------------------------------------------------------------- |
---|
| 577 | */ |
---|
| 578 | |
---|
| 579 | static Tcl_WideInt |
---|
| 580 | FileWideSeekProc( |
---|
| 581 | ClientData instanceData, /* File state. */ |
---|
| 582 | Tcl_WideInt offset, /* Offset to seek to. */ |
---|
| 583 | int mode, /* Relative to where should we seek? Can be |
---|
| 584 | * one of SEEK_START, SEEK_CUR or SEEK_END. */ |
---|
| 585 | int *errorCodePtr) /* To store error code. */ |
---|
| 586 | { |
---|
| 587 | FileState *fsPtr = (FileState *) instanceData; |
---|
| 588 | Tcl_WideInt newLoc; |
---|
| 589 | |
---|
| 590 | newLoc = TclOSseek(fsPtr->fd, (Tcl_SeekOffset) offset, mode); |
---|
| 591 | |
---|
| 592 | *errorCodePtr = (newLoc == -1) ? errno : 0; |
---|
| 593 | return newLoc; |
---|
| 594 | } |
---|
| 595 | |
---|
| 596 | /* |
---|
| 597 | *---------------------------------------------------------------------- |
---|
| 598 | * |
---|
| 599 | * FileWatchProc -- |
---|
| 600 | * |
---|
| 601 | * Initialize the notifier to watch the fd from this channel. |
---|
| 602 | * |
---|
| 603 | * Results: |
---|
| 604 | * None. |
---|
| 605 | * |
---|
| 606 | * Side effects: |
---|
| 607 | * Sets up the notifier so that a future event on the channel will |
---|
| 608 | * be seen by Tcl. |
---|
| 609 | * |
---|
| 610 | *---------------------------------------------------------------------- |
---|
| 611 | */ |
---|
| 612 | |
---|
| 613 | static void |
---|
| 614 | FileWatchProc( |
---|
| 615 | ClientData instanceData, /* The file state. */ |
---|
| 616 | int mask) /* Events of interest; an OR-ed combination of |
---|
| 617 | * TCL_READABLE, TCL_WRITABLE and |
---|
| 618 | * TCL_EXCEPTION. */ |
---|
| 619 | { |
---|
| 620 | FileState *fsPtr = (FileState *) instanceData; |
---|
| 621 | |
---|
| 622 | /* |
---|
| 623 | * Make sure we only register for events that are valid on this file. Note |
---|
| 624 | * that we are passing Tcl_NotifyChannel directly to Tcl_CreateFileHandler |
---|
| 625 | * with the channel pointer as the client data. |
---|
| 626 | */ |
---|
| 627 | |
---|
| 628 | mask &= fsPtr->validMask; |
---|
| 629 | if (mask) { |
---|
| 630 | Tcl_CreateFileHandler(fsPtr->fd, mask, |
---|
| 631 | (Tcl_FileProc *) Tcl_NotifyChannel, |
---|
| 632 | (ClientData) fsPtr->channel); |
---|
| 633 | } else { |
---|
| 634 | Tcl_DeleteFileHandler(fsPtr->fd); |
---|
| 635 | } |
---|
| 636 | } |
---|
| 637 | |
---|
| 638 | /* |
---|
| 639 | *---------------------------------------------------------------------- |
---|
| 640 | * |
---|
| 641 | * FileGetHandleProc -- |
---|
| 642 | * |
---|
| 643 | * Called from Tcl_GetChannelHandle to retrieve OS handles from a file |
---|
| 644 | * based channel. |
---|
| 645 | * |
---|
| 646 | * Results: |
---|
| 647 | * Returns TCL_OK with the fd in handlePtr, or TCL_ERROR if there is no |
---|
| 648 | * handle for the specified direction. |
---|
| 649 | * |
---|
| 650 | * Side effects: |
---|
| 651 | * None. |
---|
| 652 | * |
---|
| 653 | *---------------------------------------------------------------------- |
---|
| 654 | */ |
---|
| 655 | |
---|
| 656 | static int |
---|
| 657 | FileGetHandleProc( |
---|
| 658 | ClientData instanceData, /* The file state. */ |
---|
| 659 | int direction, /* TCL_READABLE or TCL_WRITABLE */ |
---|
| 660 | ClientData *handlePtr) /* Where to store the handle. */ |
---|
| 661 | { |
---|
| 662 | FileState *fsPtr = (FileState *) instanceData; |
---|
| 663 | |
---|
| 664 | if (direction & fsPtr->validMask) { |
---|
| 665 | *handlePtr = (ClientData) INT2PTR(fsPtr->fd); |
---|
| 666 | return TCL_OK; |
---|
| 667 | } |
---|
| 668 | return TCL_ERROR; |
---|
| 669 | } |
---|
| 670 | |
---|
| 671 | #ifdef SUPPORTS_TTY |
---|
| 672 | #ifdef USE_TERMIOS |
---|
| 673 | /* |
---|
| 674 | *---------------------------------------------------------------------- |
---|
| 675 | * |
---|
| 676 | * TtyModemStatusStr -- |
---|
| 677 | * |
---|
| 678 | * Converts a RS232 modem status list of readable flags |
---|
| 679 | * |
---|
| 680 | *---------------------------------------------------------------------- |
---|
| 681 | */ |
---|
| 682 | |
---|
| 683 | static void |
---|
| 684 | TtyModemStatusStr( |
---|
| 685 | int status, /* RS232 modem status */ |
---|
| 686 | Tcl_DString *dsPtr) /* Where to store string */ |
---|
| 687 | { |
---|
| 688 | #ifdef TIOCM_CTS |
---|
| 689 | Tcl_DStringAppendElement(dsPtr, "CTS"); |
---|
| 690 | Tcl_DStringAppendElement(dsPtr, (status & TIOCM_CTS) ? "1" : "0"); |
---|
| 691 | #endif /* TIOCM_CTS */ |
---|
| 692 | #ifdef TIOCM_DSR |
---|
| 693 | Tcl_DStringAppendElement(dsPtr, "DSR"); |
---|
| 694 | Tcl_DStringAppendElement(dsPtr, (status & TIOCM_DSR) ? "1" : "0"); |
---|
| 695 | #endif /* TIOCM_DSR */ |
---|
| 696 | #ifdef TIOCM_RNG |
---|
| 697 | Tcl_DStringAppendElement(dsPtr, "RING"); |
---|
| 698 | Tcl_DStringAppendElement(dsPtr, (status & TIOCM_RNG) ? "1" : "0"); |
---|
| 699 | #endif /* TIOCM_RNG */ |
---|
| 700 | #ifdef TIOCM_CD |
---|
| 701 | Tcl_DStringAppendElement(dsPtr, "DCD"); |
---|
| 702 | Tcl_DStringAppendElement(dsPtr, (status & TIOCM_CD) ? "1" : "0"); |
---|
| 703 | #endif /* TIOCM_CD */ |
---|
| 704 | } |
---|
| 705 | #endif /* USE_TERMIOS */ |
---|
| 706 | |
---|
| 707 | /* |
---|
| 708 | *---------------------------------------------------------------------- |
---|
| 709 | * |
---|
| 710 | * TtySetOptionProc -- |
---|
| 711 | * |
---|
| 712 | * Sets an option on a channel. |
---|
| 713 | * |
---|
| 714 | * Results: |
---|
| 715 | * A standard Tcl result. Also sets the interp's result on error if |
---|
| 716 | * interp is not NULL. |
---|
| 717 | * |
---|
| 718 | * Side effects: |
---|
| 719 | * May modify an option on a device. Sets Error message if needed (by |
---|
| 720 | * calling Tcl_BadChannelOption). |
---|
| 721 | * |
---|
| 722 | *---------------------------------------------------------------------- |
---|
| 723 | */ |
---|
| 724 | |
---|
| 725 | static int |
---|
| 726 | TtySetOptionProc( |
---|
| 727 | ClientData instanceData, /* File state. */ |
---|
| 728 | Tcl_Interp *interp, /* For error reporting - can be NULL. */ |
---|
| 729 | const char *optionName, /* Which option to set? */ |
---|
| 730 | const char *value) /* New value for option. */ |
---|
| 731 | { |
---|
| 732 | FileState *fsPtr = (FileState *) instanceData; |
---|
| 733 | unsigned int len, vlen; |
---|
| 734 | TtyAttrs tty; |
---|
| 735 | #ifdef USE_TERMIOS |
---|
| 736 | int flag, control, argc; |
---|
| 737 | const char **argv; |
---|
| 738 | IOSTATE iostate; |
---|
| 739 | #endif /* USE_TERMIOS */ |
---|
| 740 | |
---|
| 741 | len = strlen(optionName); |
---|
| 742 | vlen = strlen(value); |
---|
| 743 | |
---|
| 744 | /* |
---|
| 745 | * Option -mode baud,parity,databits,stopbits |
---|
| 746 | */ |
---|
| 747 | if ((len > 2) && (strncmp(optionName, "-mode", len) == 0)) { |
---|
| 748 | if (TtyParseMode(interp, value, &tty.baud, &tty.parity, &tty.data, |
---|
| 749 | &tty.stop) != TCL_OK) { |
---|
| 750 | return TCL_ERROR; |
---|
| 751 | } |
---|
| 752 | |
---|
| 753 | /* |
---|
| 754 | * system calls results should be checked there. - dl |
---|
| 755 | */ |
---|
| 756 | |
---|
| 757 | TtySetAttributes(fsPtr->fd, &tty); |
---|
| 758 | return TCL_OK; |
---|
| 759 | } |
---|
| 760 | |
---|
| 761 | #ifdef USE_TERMIOS |
---|
| 762 | |
---|
| 763 | /* |
---|
| 764 | * Option -handshake none|xonxoff|rtscts|dtrdsr |
---|
| 765 | */ |
---|
| 766 | |
---|
| 767 | if ((len > 1) && (strncmp(optionName, "-handshake", len) == 0)) { |
---|
| 768 | /* |
---|
| 769 | * Reset all handshake options. DTR and RTS are ON by default. |
---|
| 770 | */ |
---|
| 771 | |
---|
| 772 | GETIOSTATE(fsPtr->fd, &iostate); |
---|
| 773 | CLEAR_BITS(iostate.c_iflag, IXON | IXOFF | IXANY); |
---|
| 774 | #ifdef CRTSCTS |
---|
| 775 | CLEAR_BITS(iostate.c_cflag, CRTSCTS); |
---|
| 776 | #endif /* CRTSCTS */ |
---|
| 777 | if (strncasecmp(value, "NONE", vlen) == 0) { |
---|
| 778 | /* leave all handshake options disabled */ |
---|
| 779 | } else if (strncasecmp(value, "XONXOFF", vlen) == 0) { |
---|
| 780 | SET_BITS(iostate.c_iflag, IXON | IXOFF | IXANY); |
---|
| 781 | } else if (strncasecmp(value, "RTSCTS", vlen) == 0) { |
---|
| 782 | #ifdef CRTSCTS |
---|
| 783 | SET_BITS(iostate.c_cflag, CRTSCTS); |
---|
| 784 | #else /* !CRTSTS */ |
---|
| 785 | UNSUPPORTED_OPTION("-handshake RTSCTS"); |
---|
| 786 | return TCL_ERROR; |
---|
| 787 | #endif /* CRTSCTS */ |
---|
| 788 | } else if (strncasecmp(value, "DTRDSR", vlen) == 0) { |
---|
| 789 | UNSUPPORTED_OPTION("-handshake DTRDSR"); |
---|
| 790 | return TCL_ERROR; |
---|
| 791 | } else { |
---|
| 792 | if (interp) { |
---|
| 793 | Tcl_AppendResult(interp, "bad value for -handshake: " |
---|
| 794 | "must be one of xonxoff, rtscts, dtrdsr or none", |
---|
| 795 | NULL); |
---|
| 796 | } |
---|
| 797 | return TCL_ERROR; |
---|
| 798 | } |
---|
| 799 | SETIOSTATE(fsPtr->fd, &iostate); |
---|
| 800 | return TCL_OK; |
---|
| 801 | } |
---|
| 802 | |
---|
| 803 | /* |
---|
| 804 | * Option -xchar {\x11 \x13} |
---|
| 805 | */ |
---|
| 806 | |
---|
| 807 | if ((len > 1) && (strncmp(optionName, "-xchar", len) == 0)) { |
---|
| 808 | GETIOSTATE(fsPtr->fd, &iostate); |
---|
| 809 | if (Tcl_SplitList(interp, value, &argc, &argv) == TCL_ERROR) { |
---|
| 810 | return TCL_ERROR; |
---|
| 811 | } |
---|
| 812 | if (argc == 2) { |
---|
| 813 | Tcl_DString ds; |
---|
| 814 | Tcl_DStringInit(&ds); |
---|
| 815 | |
---|
| 816 | Tcl_UtfToExternalDString(NULL, argv[0], -1, &ds); |
---|
| 817 | iostate.c_cc[VSTART] = *(const cc_t *) Tcl_DStringValue(&ds); |
---|
| 818 | Tcl_DStringSetLength(&ds, 0); |
---|
| 819 | |
---|
| 820 | Tcl_UtfToExternalDString(NULL, argv[1], -1, &ds); |
---|
| 821 | iostate.c_cc[VSTOP] = *(const cc_t *) Tcl_DStringValue(&ds); |
---|
| 822 | Tcl_DStringFree(&ds); |
---|
| 823 | } else { |
---|
| 824 | if (interp) { |
---|
| 825 | Tcl_AppendResult(interp, "bad value for -xchar: " |
---|
| 826 | "should be a list of two elements", NULL); |
---|
| 827 | } |
---|
| 828 | ckfree((char *) argv); |
---|
| 829 | return TCL_ERROR; |
---|
| 830 | } |
---|
| 831 | SETIOSTATE(fsPtr->fd, &iostate); |
---|
| 832 | ckfree((char *) argv); |
---|
| 833 | return TCL_OK; |
---|
| 834 | } |
---|
| 835 | |
---|
| 836 | /* |
---|
| 837 | * Option -timeout msec |
---|
| 838 | */ |
---|
| 839 | |
---|
| 840 | if ((len > 2) && (strncmp(optionName, "-timeout", len) == 0)) { |
---|
| 841 | int msec; |
---|
| 842 | |
---|
| 843 | GETIOSTATE(fsPtr->fd, &iostate); |
---|
| 844 | if (Tcl_GetInt(interp, value, &msec) != TCL_OK) { |
---|
| 845 | return TCL_ERROR; |
---|
| 846 | } |
---|
| 847 | iostate.c_cc[VMIN] = 0; |
---|
| 848 | iostate.c_cc[VTIME] = (msec==0) ? 0 : (msec<100) ? 1 : (msec+50)/100; |
---|
| 849 | SETIOSTATE(fsPtr->fd, &iostate); |
---|
| 850 | return TCL_OK; |
---|
| 851 | } |
---|
| 852 | |
---|
| 853 | /* |
---|
| 854 | * Option -ttycontrol {DTR 1 RTS 0 BREAK 0} |
---|
| 855 | */ |
---|
| 856 | |
---|
| 857 | if ((len > 4) && (strncmp(optionName, "-ttycontrol", len) == 0)) { |
---|
| 858 | int i; |
---|
| 859 | |
---|
| 860 | if (Tcl_SplitList(interp, value, &argc, &argv) == TCL_ERROR) { |
---|
| 861 | return TCL_ERROR; |
---|
| 862 | } |
---|
| 863 | if ((argc % 2) == 1) { |
---|
| 864 | if (interp) { |
---|
| 865 | Tcl_AppendResult(interp, "bad value for -ttycontrol: " |
---|
| 866 | "should be a list of signal,value pairs", NULL); |
---|
| 867 | } |
---|
| 868 | ckfree((char *) argv); |
---|
| 869 | return TCL_ERROR; |
---|
| 870 | } |
---|
| 871 | |
---|
| 872 | GETCONTROL(fsPtr->fd, &control); |
---|
| 873 | for (i = 0; i < argc-1; i += 2) { |
---|
| 874 | if (Tcl_GetBoolean(interp, argv[i+1], &flag) == TCL_ERROR) { |
---|
| 875 | ckfree((char *) argv); |
---|
| 876 | return TCL_ERROR; |
---|
| 877 | } |
---|
| 878 | if (strncasecmp(argv[i], "DTR", strlen(argv[i])) == 0) { |
---|
| 879 | #ifdef TIOCM_DTR |
---|
| 880 | if (flag) { |
---|
| 881 | SET_BITS(control, TIOCM_DTR); |
---|
| 882 | } else { |
---|
| 883 | CLEAR_BITS(control, TIOCM_DTR); |
---|
| 884 | } |
---|
| 885 | #else /* !TIOCM_DTR */ |
---|
| 886 | UNSUPPORTED_OPTION("-ttycontrol DTR"); |
---|
| 887 | ckfree((char *) argv); |
---|
| 888 | return TCL_ERROR; |
---|
| 889 | #endif /* TIOCM_DTR */ |
---|
| 890 | } else if (strncasecmp(argv[i], "RTS", strlen(argv[i])) == 0) { |
---|
| 891 | #ifdef TIOCM_RTS |
---|
| 892 | if (flag) { |
---|
| 893 | SET_BITS(control, TIOCM_RTS); |
---|
| 894 | } else { |
---|
| 895 | CLEAR_BITS(control, TIOCM_RTS); |
---|
| 896 | } |
---|
| 897 | #else /* !TIOCM_RTS*/ |
---|
| 898 | UNSUPPORTED_OPTION("-ttycontrol RTS"); |
---|
| 899 | ckfree((char *) argv); |
---|
| 900 | return TCL_ERROR; |
---|
| 901 | #endif /* TIOCM_RTS*/ |
---|
| 902 | } else if (strncasecmp(argv[i], "BREAK", strlen(argv[i])) == 0) { |
---|
| 903 | #ifdef SETBREAK |
---|
| 904 | SETBREAK(fsPtr->fd, flag); |
---|
| 905 | #else /* !SETBREAK */ |
---|
| 906 | UNSUPPORTED_OPTION("-ttycontrol BREAK"); |
---|
| 907 | ckfree((char *) argv); |
---|
| 908 | return TCL_ERROR; |
---|
| 909 | #endif /* SETBREAK */ |
---|
| 910 | } else { |
---|
| 911 | if (interp) { |
---|
| 912 | Tcl_AppendResult(interp, "bad signal \"", argv[i], |
---|
| 913 | "\" for -ttycontrol: must be " |
---|
| 914 | "DTR, RTS or BREAK", NULL); |
---|
| 915 | } |
---|
| 916 | ckfree((char *) argv); |
---|
| 917 | return TCL_ERROR; |
---|
| 918 | } |
---|
| 919 | } /* -ttycontrol options loop */ |
---|
| 920 | |
---|
| 921 | SETCONTROL(fsPtr->fd, &control); |
---|
| 922 | ckfree((char *) argv); |
---|
| 923 | return TCL_OK; |
---|
| 924 | } |
---|
| 925 | |
---|
| 926 | return Tcl_BadChannelOption(interp, optionName, |
---|
| 927 | "mode handshake timeout ttycontrol xchar"); |
---|
| 928 | |
---|
| 929 | #else /* !USE_TERMIOS */ |
---|
| 930 | return Tcl_BadChannelOption(interp, optionName, "mode"); |
---|
| 931 | #endif /* USE_TERMIOS */ |
---|
| 932 | } |
---|
| 933 | |
---|
| 934 | /* |
---|
| 935 | *---------------------------------------------------------------------- |
---|
| 936 | * |
---|
| 937 | * TtyGetOptionProc -- |
---|
| 938 | * |
---|
| 939 | * Gets a mode associated with an IO channel. If the optionName arg is |
---|
| 940 | * non-NULL, retrieves the value of that option. If the optionName arg is |
---|
| 941 | * NULL, retrieves a list of alternating option names and values for the |
---|
| 942 | * given channel. |
---|
| 943 | * |
---|
| 944 | * Results: |
---|
| 945 | * A standard Tcl result. Also sets the supplied DString to the string |
---|
| 946 | * value of the option(s) returned. |
---|
| 947 | * |
---|
| 948 | * Side effects: |
---|
| 949 | * The string returned by this function is in static storage and may be |
---|
| 950 | * reused at any time subsequent to the call. Sets error message if |
---|
| 951 | * needed (by calling Tcl_BadChannelOption). |
---|
| 952 | * |
---|
| 953 | *---------------------------------------------------------------------- |
---|
| 954 | */ |
---|
| 955 | |
---|
| 956 | static int |
---|
| 957 | TtyGetOptionProc( |
---|
| 958 | ClientData instanceData, /* File state. */ |
---|
| 959 | Tcl_Interp *interp, /* For error reporting - can be NULL. */ |
---|
| 960 | const char *optionName, /* Option to get. */ |
---|
| 961 | Tcl_DString *dsPtr) /* Where to store value(s). */ |
---|
| 962 | { |
---|
| 963 | FileState *fsPtr = (FileState *) instanceData; |
---|
| 964 | unsigned int len; |
---|
| 965 | char buf[3*TCL_INTEGER_SPACE + 16]; |
---|
| 966 | int valid = 0; /* Flag if valid option parsed. */ |
---|
| 967 | |
---|
| 968 | if (optionName == NULL) { |
---|
| 969 | len = 0; |
---|
| 970 | } else { |
---|
| 971 | len = strlen(optionName); |
---|
| 972 | } |
---|
| 973 | if (len == 0) { |
---|
| 974 | Tcl_DStringAppendElement(dsPtr, "-mode"); |
---|
| 975 | } |
---|
| 976 | if (len==0 || (len>2 && strncmp(optionName, "-mode", len)==0)) { |
---|
| 977 | TtyAttrs tty; |
---|
| 978 | |
---|
| 979 | valid = 1; |
---|
| 980 | TtyGetAttributes(fsPtr->fd, &tty); |
---|
| 981 | sprintf(buf, "%d,%c,%d,%d", tty.baud, tty.parity, tty.data, tty.stop); |
---|
| 982 | Tcl_DStringAppendElement(dsPtr, buf); |
---|
| 983 | } |
---|
| 984 | |
---|
| 985 | #ifdef USE_TERMIOS |
---|
| 986 | /* |
---|
| 987 | * Get option -xchar |
---|
| 988 | */ |
---|
| 989 | |
---|
| 990 | if (len == 0) { |
---|
| 991 | Tcl_DStringAppendElement(dsPtr, "-xchar"); |
---|
| 992 | Tcl_DStringStartSublist(dsPtr); |
---|
| 993 | } |
---|
| 994 | if (len==0 || (len>1 && strncmp(optionName, "-xchar", len)==0)) { |
---|
| 995 | IOSTATE iostate; |
---|
| 996 | Tcl_DString ds; |
---|
| 997 | valid = 1; |
---|
| 998 | |
---|
| 999 | GETIOSTATE(fsPtr->fd, &iostate); |
---|
| 1000 | Tcl_DStringInit(&ds); |
---|
| 1001 | |
---|
| 1002 | Tcl_ExternalToUtfDString(NULL, (const char *) &iostate.c_cc[VSTART], 1, &ds); |
---|
| 1003 | Tcl_DStringAppendElement(dsPtr, (const char *) Tcl_DStringValue(&ds)); |
---|
| 1004 | Tcl_DStringSetLength(&ds, 0); |
---|
| 1005 | |
---|
| 1006 | Tcl_ExternalToUtfDString(NULL, (const char *) &iostate.c_cc[VSTOP], 1, &ds); |
---|
| 1007 | Tcl_DStringAppendElement(dsPtr, (const char *) Tcl_DStringValue(&ds)); |
---|
| 1008 | Tcl_DStringFree(&ds); |
---|
| 1009 | } |
---|
| 1010 | if (len == 0) { |
---|
| 1011 | Tcl_DStringEndSublist(dsPtr); |
---|
| 1012 | } |
---|
| 1013 | |
---|
| 1014 | /* |
---|
| 1015 | * Get option -queue |
---|
| 1016 | * Option is readonly and returned by [fconfigure chan -queue] but not |
---|
| 1017 | * returned by unnamed [fconfigure chan]. |
---|
| 1018 | */ |
---|
| 1019 | |
---|
| 1020 | if ((len > 1) && (strncmp(optionName, "-queue", len) == 0)) { |
---|
| 1021 | int inQueue=0, outQueue=0, inBuffered, outBuffered; |
---|
| 1022 | |
---|
| 1023 | valid = 1; |
---|
| 1024 | #ifdef GETREADQUEUE |
---|
| 1025 | GETREADQUEUE(fsPtr->fd, inQueue); |
---|
| 1026 | #endif /* GETREADQUEUE */ |
---|
| 1027 | #ifdef GETWRITEQUEUE |
---|
| 1028 | GETWRITEQUEUE(fsPtr->fd, outQueue); |
---|
| 1029 | #endif /* GETWRITEQUEUE */ |
---|
| 1030 | inBuffered = Tcl_InputBuffered(fsPtr->channel); |
---|
| 1031 | outBuffered = Tcl_OutputBuffered(fsPtr->channel); |
---|
| 1032 | |
---|
| 1033 | sprintf(buf, "%d", inBuffered+inQueue); |
---|
| 1034 | Tcl_DStringAppendElement(dsPtr, buf); |
---|
| 1035 | sprintf(buf, "%d", outBuffered+outQueue); |
---|
| 1036 | Tcl_DStringAppendElement(dsPtr, buf); |
---|
| 1037 | } |
---|
| 1038 | |
---|
| 1039 | /* |
---|
| 1040 | * Get option -ttystatus |
---|
| 1041 | * Option is readonly and returned by [fconfigure chan -ttystatus] but not |
---|
| 1042 | * returned by unnamed [fconfigure chan]. |
---|
| 1043 | */ |
---|
| 1044 | if ((len > 4) && (strncmp(optionName, "-ttystatus", len) == 0)) { |
---|
| 1045 | int status; |
---|
| 1046 | |
---|
| 1047 | valid = 1; |
---|
| 1048 | GETCONTROL(fsPtr->fd, &status); |
---|
| 1049 | TtyModemStatusStr(status, dsPtr); |
---|
| 1050 | } |
---|
| 1051 | #endif /* USE_TERMIOS */ |
---|
| 1052 | |
---|
| 1053 | if (valid) { |
---|
| 1054 | return TCL_OK; |
---|
| 1055 | } |
---|
| 1056 | return Tcl_BadChannelOption(interp, optionName, "mode" |
---|
| 1057 | #ifdef USE_TERMIOS |
---|
| 1058 | " queue ttystatus xchar" |
---|
| 1059 | #endif /* USE_TERMIOS */ |
---|
| 1060 | ); |
---|
| 1061 | } |
---|
| 1062 | |
---|
| 1063 | #ifdef DIRECT_BAUD |
---|
| 1064 | # define TtyGetSpeed(baud) ((unsigned) (baud)) |
---|
| 1065 | # define TtyGetBaud(speed) ((int) (speed)) |
---|
| 1066 | #else /* !DIRECT_BAUD */ |
---|
| 1067 | |
---|
| 1068 | static struct {int baud; unsigned long speed;} speeds[] = { |
---|
| 1069 | #ifdef B0 |
---|
| 1070 | {0, B0}, |
---|
| 1071 | #endif |
---|
| 1072 | #ifdef B50 |
---|
| 1073 | {50, B50}, |
---|
| 1074 | #endif |
---|
| 1075 | #ifdef B75 |
---|
| 1076 | {75, B75}, |
---|
| 1077 | #endif |
---|
| 1078 | #ifdef B110 |
---|
| 1079 | {110, B110}, |
---|
| 1080 | #endif |
---|
| 1081 | #ifdef B134 |
---|
| 1082 | {134, B134}, |
---|
| 1083 | #endif |
---|
| 1084 | #ifdef B150 |
---|
| 1085 | {150, B150}, |
---|
| 1086 | #endif |
---|
| 1087 | #ifdef B200 |
---|
| 1088 | {200, B200}, |
---|
| 1089 | #endif |
---|
| 1090 | #ifdef B300 |
---|
| 1091 | {300, B300}, |
---|
| 1092 | #endif |
---|
| 1093 | #ifdef B600 |
---|
| 1094 | {600, B600}, |
---|
| 1095 | #endif |
---|
| 1096 | #ifdef B1200 |
---|
| 1097 | {1200, B1200}, |
---|
| 1098 | #endif |
---|
| 1099 | #ifdef B1800 |
---|
| 1100 | {1800, B1800}, |
---|
| 1101 | #endif |
---|
| 1102 | #ifdef B2400 |
---|
| 1103 | {2400, B2400}, |
---|
| 1104 | #endif |
---|
| 1105 | #ifdef B4800 |
---|
| 1106 | {4800, B4800}, |
---|
| 1107 | #endif |
---|
| 1108 | #ifdef B9600 |
---|
| 1109 | {9600, B9600}, |
---|
| 1110 | #endif |
---|
| 1111 | #ifdef B14400 |
---|
| 1112 | {14400, B14400}, |
---|
| 1113 | #endif |
---|
| 1114 | #ifdef B19200 |
---|
| 1115 | {19200, B19200}, |
---|
| 1116 | #endif |
---|
| 1117 | #ifdef EXTA |
---|
| 1118 | {19200, EXTA}, |
---|
| 1119 | #endif |
---|
| 1120 | #ifdef B28800 |
---|
| 1121 | {28800, B28800}, |
---|
| 1122 | #endif |
---|
| 1123 | #ifdef B38400 |
---|
| 1124 | {38400, B38400}, |
---|
| 1125 | #endif |
---|
| 1126 | #ifdef EXTB |
---|
| 1127 | {38400, EXTB}, |
---|
| 1128 | #endif |
---|
| 1129 | #ifdef B57600 |
---|
| 1130 | {57600, B57600}, |
---|
| 1131 | #endif |
---|
| 1132 | #ifdef _B57600 |
---|
| 1133 | {57600, _B57600}, |
---|
| 1134 | #endif |
---|
| 1135 | #ifdef B76800 |
---|
| 1136 | {76800, B76800}, |
---|
| 1137 | #endif |
---|
| 1138 | #ifdef B115200 |
---|
| 1139 | {115200, B115200}, |
---|
| 1140 | #endif |
---|
| 1141 | #ifdef _B115200 |
---|
| 1142 | {115200, _B115200}, |
---|
| 1143 | #endif |
---|
| 1144 | #ifdef B153600 |
---|
| 1145 | {153600, B153600}, |
---|
| 1146 | #endif |
---|
| 1147 | #ifdef B230400 |
---|
| 1148 | {230400, B230400}, |
---|
| 1149 | #endif |
---|
| 1150 | #ifdef B307200 |
---|
| 1151 | {307200, B307200}, |
---|
| 1152 | #endif |
---|
| 1153 | #ifdef B460800 |
---|
| 1154 | {460800, B460800}, |
---|
| 1155 | #endif |
---|
| 1156 | {-1, 0} |
---|
| 1157 | }; |
---|
| 1158 | |
---|
| 1159 | /* |
---|
| 1160 | *--------------------------------------------------------------------------- |
---|
| 1161 | * |
---|
| 1162 | * TtyGetSpeed -- |
---|
| 1163 | * |
---|
| 1164 | * Given a baud rate, get the mask value that should be stored in the |
---|
| 1165 | * termios, termio, or sgttyb structure in order to select that baud |
---|
| 1166 | * rate. |
---|
| 1167 | * |
---|
| 1168 | * Results: |
---|
| 1169 | * As above. |
---|
| 1170 | * |
---|
| 1171 | * Side effects: |
---|
| 1172 | * None. |
---|
| 1173 | * |
---|
| 1174 | *--------------------------------------------------------------------------- |
---|
| 1175 | */ |
---|
| 1176 | |
---|
| 1177 | static unsigned long |
---|
| 1178 | TtyGetSpeed( |
---|
| 1179 | int baud) /* The baud rate to look up. */ |
---|
| 1180 | { |
---|
| 1181 | int bestIdx, bestDiff, i, diff; |
---|
| 1182 | |
---|
| 1183 | bestIdx = 0; |
---|
| 1184 | bestDiff = 1000000; |
---|
| 1185 | |
---|
| 1186 | /* |
---|
| 1187 | * If the baud rate does not correspond to one of the known mask values, |
---|
| 1188 | * choose the mask value whose baud rate is closest to the specified baud |
---|
| 1189 | * rate. |
---|
| 1190 | */ |
---|
| 1191 | |
---|
| 1192 | for (i = 0; speeds[i].baud >= 0; i++) { |
---|
| 1193 | diff = speeds[i].baud - baud; |
---|
| 1194 | if (diff < 0) { |
---|
| 1195 | diff = -diff; |
---|
| 1196 | } |
---|
| 1197 | if (diff < bestDiff) { |
---|
| 1198 | bestIdx = i; |
---|
| 1199 | bestDiff = diff; |
---|
| 1200 | } |
---|
| 1201 | } |
---|
| 1202 | return speeds[bestIdx].speed; |
---|
| 1203 | } |
---|
| 1204 | |
---|
| 1205 | /* |
---|
| 1206 | *--------------------------------------------------------------------------- |
---|
| 1207 | * |
---|
| 1208 | * TtyGetBaud -- |
---|
| 1209 | * |
---|
| 1210 | * Given a speed mask value from a termios, termio, or sgttyb structure, |
---|
| 1211 | * get the baus rate that corresponds to that mask value. |
---|
| 1212 | * |
---|
| 1213 | * Results: |
---|
| 1214 | * As above. If the mask value was not recognized, 0 is returned. |
---|
| 1215 | * |
---|
| 1216 | * Side effects: |
---|
| 1217 | * None. |
---|
| 1218 | * |
---|
| 1219 | *--------------------------------------------------------------------------- |
---|
| 1220 | */ |
---|
| 1221 | |
---|
| 1222 | static int |
---|
| 1223 | TtyGetBaud( |
---|
| 1224 | unsigned long speed) /* Speed mask value to look up. */ |
---|
| 1225 | { |
---|
| 1226 | int i; |
---|
| 1227 | |
---|
| 1228 | for (i = 0; speeds[i].baud >= 0; i++) { |
---|
| 1229 | if (speeds[i].speed == speed) { |
---|
| 1230 | return speeds[i].baud; |
---|
| 1231 | } |
---|
| 1232 | } |
---|
| 1233 | return 0; |
---|
| 1234 | } |
---|
| 1235 | #endif /* !DIRECT_BAUD */ |
---|
| 1236 | |
---|
| 1237 | /* |
---|
| 1238 | *--------------------------------------------------------------------------- |
---|
| 1239 | * |
---|
| 1240 | * TtyGetAttributes -- |
---|
| 1241 | * |
---|
| 1242 | * Get the current attributes of the specified serial device. |
---|
| 1243 | * |
---|
| 1244 | * Results: |
---|
| 1245 | * None. |
---|
| 1246 | * |
---|
| 1247 | * Side effects: |
---|
| 1248 | * None. |
---|
| 1249 | * |
---|
| 1250 | *--------------------------------------------------------------------------- |
---|
| 1251 | */ |
---|
| 1252 | |
---|
| 1253 | static void |
---|
| 1254 | TtyGetAttributes( |
---|
| 1255 | int fd, /* Open file descriptor for serial port to be |
---|
| 1256 | * queried. */ |
---|
| 1257 | TtyAttrs *ttyPtr) /* Buffer filled with serial port |
---|
| 1258 | * attributes. */ |
---|
| 1259 | { |
---|
| 1260 | IOSTATE iostate; |
---|
| 1261 | int baud, parity, data, stop; |
---|
| 1262 | |
---|
| 1263 | GETIOSTATE(fd, &iostate); |
---|
| 1264 | |
---|
| 1265 | #ifdef USE_TERMIOS |
---|
| 1266 | baud = TtyGetBaud(cfgetospeed(&iostate)); |
---|
| 1267 | |
---|
| 1268 | parity = 'n'; |
---|
| 1269 | #ifdef PAREXT |
---|
| 1270 | switch ((int) (iostate.c_cflag & (PARENB | PARODD | PAREXT))) { |
---|
| 1271 | case PARENB : parity = 'e'; break; |
---|
| 1272 | case PARENB | PARODD : parity = 'o'; break; |
---|
| 1273 | case PARENB | PAREXT : parity = 's'; break; |
---|
| 1274 | case PARENB | PARODD | PAREXT : parity = 'm'; break; |
---|
| 1275 | } |
---|
| 1276 | #else /* !PAREXT */ |
---|
| 1277 | switch ((int) (iostate.c_cflag & (PARENB | PARODD))) { |
---|
| 1278 | case PARENB : parity = 'e'; break; |
---|
| 1279 | case PARENB | PARODD : parity = 'o'; break; |
---|
| 1280 | } |
---|
| 1281 | #endif /* !PAREXT */ |
---|
| 1282 | |
---|
| 1283 | data = iostate.c_cflag & CSIZE; |
---|
| 1284 | data = (data == CS5) ? 5 : (data == CS6) ? 6 : (data == CS7) ? 7 : 8; |
---|
| 1285 | |
---|
| 1286 | stop = (iostate.c_cflag & CSTOPB) ? 2 : 1; |
---|
| 1287 | #endif /* USE_TERMIOS */ |
---|
| 1288 | |
---|
| 1289 | #ifdef USE_TERMIO |
---|
| 1290 | baud = TtyGetBaud(iostate.c_cflag & CBAUD); |
---|
| 1291 | |
---|
| 1292 | parity = 'n'; |
---|
| 1293 | switch (iostate.c_cflag & (PARENB | PARODD | PAREXT)) { |
---|
| 1294 | case PARENB : parity = 'e'; break; |
---|
| 1295 | case PARENB | PARODD : parity = 'o'; break; |
---|
| 1296 | case PARENB | PAREXT : parity = 's'; break; |
---|
| 1297 | case PARENB | PARODD | PAREXT : parity = 'm'; break; |
---|
| 1298 | } |
---|
| 1299 | |
---|
| 1300 | data = iostate.c_cflag & CSIZE; |
---|
| 1301 | data = (data == CS5) ? 5 : (data == CS6) ? 6 : (data == CS7) ? 7 : 8; |
---|
| 1302 | |
---|
| 1303 | stop = (iostate.c_cflag & CSTOPB) ? 2 : 1; |
---|
| 1304 | #endif /* USE_TERMIO */ |
---|
| 1305 | |
---|
| 1306 | #ifdef USE_SGTTY |
---|
| 1307 | baud = TtyGetBaud(iostate.sg_ospeed); |
---|
| 1308 | |
---|
| 1309 | parity = 'n'; |
---|
| 1310 | if (iostate.sg_flags & EVENP) { |
---|
| 1311 | parity = 'e'; |
---|
| 1312 | } else if (iostate.sg_flags & ODDP) { |
---|
| 1313 | parity = 'o'; |
---|
| 1314 | } |
---|
| 1315 | |
---|
| 1316 | data = (iostate.sg_flags & (EVENP | ODDP)) ? 7 : 8; |
---|
| 1317 | |
---|
| 1318 | stop = 1; |
---|
| 1319 | #endif /* USE_SGTTY */ |
---|
| 1320 | |
---|
| 1321 | ttyPtr->baud = baud; |
---|
| 1322 | ttyPtr->parity = parity; |
---|
| 1323 | ttyPtr->data = data; |
---|
| 1324 | ttyPtr->stop = stop; |
---|
| 1325 | } |
---|
| 1326 | |
---|
| 1327 | /* |
---|
| 1328 | *--------------------------------------------------------------------------- |
---|
| 1329 | * |
---|
| 1330 | * TtySetAttributes -- |
---|
| 1331 | * |
---|
| 1332 | * Set the current attributes of the specified serial device. |
---|
| 1333 | * |
---|
| 1334 | * Results: |
---|
| 1335 | * None. |
---|
| 1336 | * |
---|
| 1337 | * Side effects: |
---|
| 1338 | * None. |
---|
| 1339 | * |
---|
| 1340 | *--------------------------------------------------------------------------- |
---|
| 1341 | */ |
---|
| 1342 | |
---|
| 1343 | static void |
---|
| 1344 | TtySetAttributes( |
---|
| 1345 | int fd, /* Open file descriptor for serial port to be |
---|
| 1346 | * modified. */ |
---|
| 1347 | TtyAttrs *ttyPtr) /* Buffer containing new attributes for serial |
---|
| 1348 | * port. */ |
---|
| 1349 | { |
---|
| 1350 | IOSTATE iostate; |
---|
| 1351 | |
---|
| 1352 | #ifdef USE_TERMIOS |
---|
| 1353 | int parity, data, flag; |
---|
| 1354 | |
---|
| 1355 | GETIOSTATE(fd, &iostate); |
---|
| 1356 | cfsetospeed(&iostate, TtyGetSpeed(ttyPtr->baud)); |
---|
| 1357 | cfsetispeed(&iostate, TtyGetSpeed(ttyPtr->baud)); |
---|
| 1358 | |
---|
| 1359 | flag = 0; |
---|
| 1360 | parity = ttyPtr->parity; |
---|
| 1361 | if (parity != 'n') { |
---|
| 1362 | SET_BITS(flag, PARENB); |
---|
| 1363 | #ifdef PAREXT |
---|
| 1364 | CLEAR_BITS(iostate.c_cflag, PAREXT); |
---|
| 1365 | if ((parity == 'm') || (parity == 's')) { |
---|
| 1366 | SET_BITS(flag, PAREXT); |
---|
| 1367 | } |
---|
| 1368 | #endif /* PAREXT */ |
---|
| 1369 | if ((parity == 'm') || (parity == 'o')) { |
---|
| 1370 | SET_BITS(flag, PARODD); |
---|
| 1371 | } |
---|
| 1372 | } |
---|
| 1373 | data = ttyPtr->data; |
---|
| 1374 | SET_BITS(flag, |
---|
| 1375 | (data == 5) ? CS5 : |
---|
| 1376 | (data == 6) ? CS6 : |
---|
| 1377 | (data == 7) ? CS7 : CS8); |
---|
| 1378 | if (ttyPtr->stop == 2) { |
---|
| 1379 | SET_BITS(flag, CSTOPB); |
---|
| 1380 | } |
---|
| 1381 | |
---|
| 1382 | CLEAR_BITS(iostate.c_cflag, PARENB | PARODD | CSIZE | CSTOPB); |
---|
| 1383 | SET_BITS(iostate.c_cflag, flag); |
---|
| 1384 | |
---|
| 1385 | #endif /* USE_TERMIOS */ |
---|
| 1386 | |
---|
| 1387 | #ifdef USE_TERMIO |
---|
| 1388 | int parity, data, flag; |
---|
| 1389 | |
---|
| 1390 | GETIOSTATE(fd, &iostate); |
---|
| 1391 | CLEAR_BITS(iostate.c_cflag, CBAUD); |
---|
| 1392 | SET_BITS(iostate.c_cflag, TtyGetSpeed(ttyPtr->baud)); |
---|
| 1393 | |
---|
| 1394 | flag = 0; |
---|
| 1395 | parity = ttyPtr->parity; |
---|
| 1396 | if (parity != 'n') { |
---|
| 1397 | SET_BITS(flag, PARENB); |
---|
| 1398 | if ((parity == 'm') || (parity == 's')) { |
---|
| 1399 | SET_BITS(flag, PAREXT); |
---|
| 1400 | } |
---|
| 1401 | if ((parity == 'm') || (parity == 'o')) { |
---|
| 1402 | SET_BITS(flag, PARODD); |
---|
| 1403 | } |
---|
| 1404 | } |
---|
| 1405 | data = ttyPtr->data; |
---|
| 1406 | SET_BITS(flag, |
---|
| 1407 | (data == 5) ? CS5 : |
---|
| 1408 | (data == 6) ? CS6 : |
---|
| 1409 | (data == 7) ? CS7 : CS8); |
---|
| 1410 | if (ttyPtr->stop == 2) { |
---|
| 1411 | SET_BITS(flag, CSTOPB); |
---|
| 1412 | } |
---|
| 1413 | |
---|
| 1414 | CLEAR_BITS(iostate.c_cflag, PARENB | PARODD | PAREXT | CSIZE | CSTOPB); |
---|
| 1415 | SET_BITS(iostate.c_cflag, flag); |
---|
| 1416 | |
---|
| 1417 | #endif /* USE_TERMIO */ |
---|
| 1418 | |
---|
| 1419 | #ifdef USE_SGTTY |
---|
| 1420 | int parity; |
---|
| 1421 | |
---|
| 1422 | GETIOSTATE(fd, &iostate); |
---|
| 1423 | iostate.sg_ospeed = TtyGetSpeed(ttyPtr->baud); |
---|
| 1424 | iostate.sg_ispeed = TtyGetSpeed(ttyPtr->baud); |
---|
| 1425 | |
---|
| 1426 | parity = ttyPtr->parity; |
---|
| 1427 | if (parity == 'e') { |
---|
| 1428 | CLEAR_BITS(iostate.sg_flags, ODDP); |
---|
| 1429 | SET_BITS(iostate.sg_flags, EVENP); |
---|
| 1430 | } else if (parity == 'o') { |
---|
| 1431 | CLEAR_BITS(iostate.sg_flags, EVENP); |
---|
| 1432 | SET_BITS(iostate.sg_flags, ODDP); |
---|
| 1433 | } |
---|
| 1434 | #endif /* USE_SGTTY */ |
---|
| 1435 | |
---|
| 1436 | SETIOSTATE(fd, &iostate); |
---|
| 1437 | } |
---|
| 1438 | |
---|
| 1439 | /* |
---|
| 1440 | *--------------------------------------------------------------------------- |
---|
| 1441 | * |
---|
| 1442 | * TtyParseMode -- |
---|
| 1443 | * |
---|
| 1444 | * Parse the "-mode" argument to the fconfigure command. The argument is |
---|
| 1445 | * of the form baud,parity,data,stop. |
---|
| 1446 | * |
---|
| 1447 | * Results: |
---|
| 1448 | * The return value is TCL_OK if the argument was successfully parsed, |
---|
| 1449 | * TCL_ERROR otherwise. If TCL_ERROR is returned, an error message is |
---|
| 1450 | * left in the interp's result (if interp is non-NULL). |
---|
| 1451 | * |
---|
| 1452 | * Side effects: |
---|
| 1453 | * None. |
---|
| 1454 | * |
---|
| 1455 | *--------------------------------------------------------------------------- |
---|
| 1456 | */ |
---|
| 1457 | |
---|
| 1458 | static int |
---|
| 1459 | TtyParseMode( |
---|
| 1460 | Tcl_Interp *interp, /* If non-NULL, interp for error return. */ |
---|
| 1461 | const char *mode, /* Mode string to be parsed. */ |
---|
| 1462 | int *speedPtr, /* Filled with baud rate from mode string. */ |
---|
| 1463 | int *parityPtr, /* Filled with parity from mode string. */ |
---|
| 1464 | int *dataPtr, /* Filled with data bits from mode string. */ |
---|
| 1465 | int *stopPtr) /* Filled with stop bits from mode string. */ |
---|
| 1466 | { |
---|
| 1467 | int i, end; |
---|
| 1468 | char parity; |
---|
| 1469 | static const char *bad = "bad value for -mode"; |
---|
| 1470 | |
---|
| 1471 | i = sscanf(mode, "%d,%c,%d,%d%n", speedPtr, &parity, dataPtr, |
---|
| 1472 | stopPtr, &end); |
---|
| 1473 | if ((i != 4) || (mode[end] != '\0')) { |
---|
| 1474 | if (interp != NULL) { |
---|
| 1475 | Tcl_AppendResult(interp, bad, ": should be baud,parity,data,stop", |
---|
| 1476 | NULL); |
---|
| 1477 | } |
---|
| 1478 | return TCL_ERROR; |
---|
| 1479 | } |
---|
| 1480 | |
---|
| 1481 | /* |
---|
| 1482 | * Only allow setting mark/space parity on platforms that support it Make |
---|
| 1483 | * sure to allow for the case where strchr is a macro. [Bug: 5089] |
---|
| 1484 | */ |
---|
| 1485 | |
---|
| 1486 | #if defined(PAREXT) || defined(USE_TERMIO) |
---|
| 1487 | if (strchr("noems", parity) == NULL) { |
---|
| 1488 | #else |
---|
| 1489 | if (strchr("noe", parity) == NULL) { |
---|
| 1490 | #endif /* PAREXT|USE_TERMIO */ |
---|
| 1491 | if (interp != NULL) { |
---|
| 1492 | Tcl_AppendResult(interp, bad, " parity: should be ", |
---|
| 1493 | #if defined(PAREXT) || defined(USE_TERMIO) |
---|
| 1494 | "n, o, e, m, or s", |
---|
| 1495 | #else |
---|
| 1496 | "n, o, or e", |
---|
| 1497 | #endif /* PAREXT|USE_TERMIO */ |
---|
| 1498 | NULL); |
---|
| 1499 | } |
---|
| 1500 | return TCL_ERROR; |
---|
| 1501 | } |
---|
| 1502 | *parityPtr = parity; |
---|
| 1503 | if ((*dataPtr < 5) || (*dataPtr > 8)) { |
---|
| 1504 | if (interp != NULL) { |
---|
| 1505 | Tcl_AppendResult(interp, bad, " data: should be 5, 6, 7, or 8", |
---|
| 1506 | NULL); |
---|
| 1507 | } |
---|
| 1508 | return TCL_ERROR; |
---|
| 1509 | } |
---|
| 1510 | if ((*stopPtr < 0) || (*stopPtr > 2)) { |
---|
| 1511 | if (interp != NULL) { |
---|
| 1512 | Tcl_AppendResult(interp, bad, " stop: should be 1 or 2", NULL); |
---|
| 1513 | } |
---|
| 1514 | return TCL_ERROR; |
---|
| 1515 | } |
---|
| 1516 | return TCL_OK; |
---|
| 1517 | } |
---|
| 1518 | |
---|
| 1519 | /* |
---|
| 1520 | *--------------------------------------------------------------------------- |
---|
| 1521 | * |
---|
| 1522 | * TtyInit -- |
---|
| 1523 | * |
---|
| 1524 | * Given file descriptor that refers to a serial port, initialize the |
---|
| 1525 | * serial port to a set of sane values so that Tcl can talk to a device |
---|
| 1526 | * located on the serial port. Note that no initialization happens if the |
---|
| 1527 | * initialize flag is not set; this is necessary for the correct handling |
---|
| 1528 | * of UNIX console TTYs at startup. |
---|
| 1529 | * |
---|
| 1530 | * Results: |
---|
| 1531 | * A pointer to a FileState suitable for use with Tcl_CreateChannel and |
---|
| 1532 | * the ttyChannelType structure. |
---|
| 1533 | * |
---|
| 1534 | * Side effects: |
---|
| 1535 | * Serial device initialized to non-blocking raw mode, similar to sockets |
---|
| 1536 | * (if initialize flag is non-zero.) All other modes can be simulated on |
---|
| 1537 | * top of this in Tcl. |
---|
| 1538 | * |
---|
| 1539 | *--------------------------------------------------------------------------- |
---|
| 1540 | */ |
---|
| 1541 | |
---|
| 1542 | static FileState * |
---|
| 1543 | TtyInit( |
---|
| 1544 | int fd, /* Open file descriptor for serial port to be |
---|
| 1545 | * initialized. */ |
---|
| 1546 | int initialize) |
---|
| 1547 | { |
---|
| 1548 | TtyState *ttyPtr; |
---|
| 1549 | int stateUpdated = 0; |
---|
| 1550 | |
---|
| 1551 | ttyPtr = (TtyState *) ckalloc((unsigned) sizeof(TtyState)); |
---|
| 1552 | GETIOSTATE(fd, &ttyPtr->savedState); |
---|
| 1553 | if (initialize) { |
---|
| 1554 | IOSTATE iostate = ttyPtr->savedState; |
---|
| 1555 | |
---|
| 1556 | #if defined(USE_TERMIOS) || defined(USE_TERMIO) |
---|
| 1557 | if (iostate.c_iflag != IGNBRK || |
---|
| 1558 | iostate.c_oflag != 0 || |
---|
| 1559 | iostate.c_lflag != 0 || |
---|
| 1560 | iostate.c_cflag & CREAD || |
---|
| 1561 | iostate.c_cc[VMIN] != 1 || |
---|
| 1562 | iostate.c_cc[VTIME] != 0) { |
---|
| 1563 | stateUpdated = 1; |
---|
| 1564 | } |
---|
| 1565 | iostate.c_iflag = IGNBRK; |
---|
| 1566 | iostate.c_oflag = 0; |
---|
| 1567 | iostate.c_lflag = 0; |
---|
| 1568 | SET_BITS(iostate.c_cflag, CREAD); |
---|
| 1569 | iostate.c_cc[VMIN] = 1; |
---|
| 1570 | iostate.c_cc[VTIME] = 0; |
---|
| 1571 | #endif /* USE_TERMIOS|USE_TERMIO */ |
---|
| 1572 | |
---|
| 1573 | #ifdef USE_SGTTY |
---|
| 1574 | if ((iostate.sg_flags & (EVENP | ODDP)) || |
---|
| 1575 | !(iostate.sg_flags & RAW)) { |
---|
| 1576 | ttyPtr->stateUpdated = 1; |
---|
| 1577 | } |
---|
| 1578 | iostate.sg_flags &= EVENP | ODDP; |
---|
| 1579 | SET_BITS(iostate.sg_flags, RAW); |
---|
| 1580 | #endif /* USE_SGTTY */ |
---|
| 1581 | |
---|
| 1582 | /* |
---|
| 1583 | * Only update if we're changing anything to avoid possible blocking. |
---|
| 1584 | */ |
---|
| 1585 | |
---|
| 1586 | if (stateUpdated) { |
---|
| 1587 | SETIOSTATE(fd, &iostate); |
---|
| 1588 | } |
---|
| 1589 | } |
---|
| 1590 | |
---|
| 1591 | return &ttyPtr->fs; |
---|
| 1592 | } |
---|
| 1593 | #endif /* SUPPORTS_TTY */ |
---|
| 1594 | |
---|
| 1595 | /* |
---|
| 1596 | *---------------------------------------------------------------------- |
---|
| 1597 | * |
---|
| 1598 | * TclpOpenFileChannel -- |
---|
| 1599 | * |
---|
| 1600 | * Open an file based channel on Unix systems. |
---|
| 1601 | * |
---|
| 1602 | * Results: |
---|
| 1603 | * The new channel or NULL. If NULL, the output argument errorCodePtr is |
---|
| 1604 | * set to a POSIX error and an error message is left in the interp's |
---|
| 1605 | * result if interp is not NULL. |
---|
| 1606 | * |
---|
| 1607 | * Side effects: |
---|
| 1608 | * May open the channel and may cause creation of a file on the file |
---|
| 1609 | * system. |
---|
| 1610 | * |
---|
| 1611 | *---------------------------------------------------------------------- |
---|
| 1612 | */ |
---|
| 1613 | |
---|
| 1614 | Tcl_Channel |
---|
| 1615 | TclpOpenFileChannel( |
---|
| 1616 | Tcl_Interp *interp, /* Interpreter for error reporting; can be |
---|
| 1617 | * NULL. */ |
---|
| 1618 | Tcl_Obj *pathPtr, /* Name of file to open. */ |
---|
| 1619 | int mode, /* POSIX open mode. */ |
---|
| 1620 | int permissions) /* If the open involves creating a file, with |
---|
| 1621 | * what modes to create it? */ |
---|
| 1622 | { |
---|
| 1623 | int fd, channelPermissions; |
---|
| 1624 | FileState *fsPtr; |
---|
| 1625 | const char *native, *translation; |
---|
| 1626 | char channelName[16 + TCL_INTEGER_SPACE]; |
---|
| 1627 | Tcl_ChannelType *channelTypePtr; |
---|
| 1628 | |
---|
| 1629 | switch (mode & (O_RDONLY | O_WRONLY | O_RDWR)) { |
---|
| 1630 | case O_RDONLY: |
---|
| 1631 | channelPermissions = TCL_READABLE; |
---|
| 1632 | break; |
---|
| 1633 | case O_WRONLY: |
---|
| 1634 | channelPermissions = TCL_WRITABLE; |
---|
| 1635 | break; |
---|
| 1636 | case O_RDWR: |
---|
| 1637 | channelPermissions = (TCL_READABLE | TCL_WRITABLE); |
---|
| 1638 | break; |
---|
| 1639 | default: |
---|
| 1640 | /* |
---|
| 1641 | * This may occurr if modeString was "", for example. |
---|
| 1642 | */ |
---|
| 1643 | |
---|
| 1644 | Tcl_Panic("TclpOpenFileChannel: invalid mode value"); |
---|
| 1645 | return NULL; |
---|
| 1646 | } |
---|
| 1647 | |
---|
| 1648 | native = Tcl_FSGetNativePath(pathPtr); |
---|
| 1649 | if (native == NULL) { |
---|
| 1650 | return NULL; |
---|
| 1651 | } |
---|
| 1652 | |
---|
| 1653 | #ifdef DJGPP |
---|
| 1654 | SET_BITS(mode, O_BINARY); |
---|
| 1655 | #endif |
---|
| 1656 | |
---|
| 1657 | fd = TclOSopen(native, mode, permissions); |
---|
| 1658 | |
---|
| 1659 | if (fd < 0) { |
---|
| 1660 | if (interp != NULL) { |
---|
| 1661 | Tcl_AppendResult(interp, "couldn't open \"", TclGetString(pathPtr), |
---|
| 1662 | "\": ", Tcl_PosixError(interp), NULL); |
---|
| 1663 | } |
---|
| 1664 | return NULL; |
---|
| 1665 | } |
---|
| 1666 | |
---|
| 1667 | /* |
---|
| 1668 | * Set close-on-exec flag on the fd so that child processes will not |
---|
| 1669 | * inherit this fd. |
---|
| 1670 | */ |
---|
| 1671 | |
---|
| 1672 | fcntl(fd, F_SETFD, FD_CLOEXEC); |
---|
| 1673 | |
---|
| 1674 | sprintf(channelName, "file%d", fd); |
---|
| 1675 | |
---|
| 1676 | #ifdef SUPPORTS_TTY |
---|
| 1677 | if (strcmp(native, "/dev/tty") != 0 && isatty(fd)) { |
---|
| 1678 | /* |
---|
| 1679 | * Initialize the serial port to a set of sane parameters. Especially |
---|
| 1680 | * important if the remote device is set to echo and the serial port |
---|
| 1681 | * driver was also set to echo -- as soon as a char were sent to the |
---|
| 1682 | * serial port, the remote device would echo it, then the serial |
---|
| 1683 | * driver would echo it back to the device, etc. |
---|
| 1684 | * |
---|
| 1685 | * Note that we do not do this if we're dealing with /dev/tty itself, |
---|
| 1686 | * as that tends to cause Bad Things To Happen when you're working |
---|
| 1687 | * interactively. Strictly a better check would be to see if the FD |
---|
| 1688 | * being set up is a device and has the same major/minor as the |
---|
| 1689 | * initial std FDs (beware reopening!) but that's nearly as messy. |
---|
| 1690 | */ |
---|
| 1691 | |
---|
| 1692 | translation = "auto crlf"; |
---|
| 1693 | channelTypePtr = &ttyChannelType; |
---|
| 1694 | fsPtr = TtyInit(fd, 1); |
---|
| 1695 | } else |
---|
| 1696 | #endif /* SUPPORTS_TTY */ |
---|
| 1697 | { |
---|
| 1698 | translation = NULL; |
---|
| 1699 | channelTypePtr = &fileChannelType; |
---|
| 1700 | fsPtr = (FileState *) ckalloc((unsigned) sizeof(FileState)); |
---|
| 1701 | } |
---|
| 1702 | |
---|
| 1703 | fsPtr->validMask = channelPermissions | TCL_EXCEPTION; |
---|
| 1704 | fsPtr->fd = fd; |
---|
| 1705 | |
---|
| 1706 | fsPtr->channel = Tcl_CreateChannel(channelTypePtr, channelName, |
---|
| 1707 | (ClientData) fsPtr, channelPermissions); |
---|
| 1708 | |
---|
| 1709 | if (translation != NULL) { |
---|
| 1710 | /* |
---|
| 1711 | * Gotcha. Most modems need a "\r" at the end of the command sequence. |
---|
| 1712 | * If you just send "at\n", the modem will not respond with "OK" |
---|
| 1713 | * because it never got a "\r" to actually invoke the command. So, by |
---|
| 1714 | * default, newlines are translated to "\r\n" on output to avoid "bug" |
---|
| 1715 | * reports that the serial port isn't working. |
---|
| 1716 | */ |
---|
| 1717 | |
---|
| 1718 | if (Tcl_SetChannelOption(interp, fsPtr->channel, "-translation", |
---|
| 1719 | translation) != TCL_OK) { |
---|
| 1720 | Tcl_Close(NULL, fsPtr->channel); |
---|
| 1721 | return NULL; |
---|
| 1722 | } |
---|
| 1723 | } |
---|
| 1724 | |
---|
| 1725 | return fsPtr->channel; |
---|
| 1726 | } |
---|
| 1727 | |
---|
| 1728 | /* |
---|
| 1729 | *---------------------------------------------------------------------- |
---|
| 1730 | * |
---|
| 1731 | * Tcl_MakeFileChannel -- |
---|
| 1732 | * |
---|
| 1733 | * Makes a Tcl_Channel from an existing OS level file handle. |
---|
| 1734 | * |
---|
| 1735 | * Results: |
---|
| 1736 | * The Tcl_Channel created around the preexisting OS level file handle. |
---|
| 1737 | * |
---|
| 1738 | * Side effects: |
---|
| 1739 | * None. |
---|
| 1740 | * |
---|
| 1741 | *---------------------------------------------------------------------- |
---|
| 1742 | */ |
---|
| 1743 | |
---|
| 1744 | Tcl_Channel |
---|
| 1745 | Tcl_MakeFileChannel( |
---|
| 1746 | ClientData handle, /* OS level handle. */ |
---|
| 1747 | int mode) /* ORed combination of TCL_READABLE and |
---|
| 1748 | * TCL_WRITABLE to indicate file mode. */ |
---|
| 1749 | { |
---|
| 1750 | FileState *fsPtr; |
---|
| 1751 | char channelName[16 + TCL_INTEGER_SPACE]; |
---|
| 1752 | int fd = PTR2INT(handle); |
---|
| 1753 | Tcl_ChannelType *channelTypePtr; |
---|
| 1754 | struct sockaddr sockaddr; |
---|
| 1755 | socklen_t sockaddrLen = sizeof(sockaddr); |
---|
| 1756 | |
---|
| 1757 | if (mode == 0) { |
---|
| 1758 | return NULL; |
---|
| 1759 | } |
---|
| 1760 | |
---|
| 1761 | sockaddr.sa_family = AF_UNSPEC; |
---|
| 1762 | |
---|
| 1763 | #ifdef SUPPORTS_TTY |
---|
| 1764 | if (isatty(fd)) { |
---|
| 1765 | fsPtr = TtyInit(fd, 0); |
---|
| 1766 | channelTypePtr = &ttyChannelType; |
---|
| 1767 | sprintf(channelName, "serial%d", fd); |
---|
| 1768 | } else |
---|
| 1769 | #endif /* SUPPORTS_TTY */ |
---|
| 1770 | if (getsockname(fd, (struct sockaddr *)&sockaddr, &sockaddrLen) == 0 |
---|
| 1771 | && sockaddrLen > 0 |
---|
| 1772 | && sockaddr.sa_family == AF_INET) { |
---|
| 1773 | return MakeTcpClientChannelMode((ClientData) INT2PTR(fd), mode); |
---|
| 1774 | } else { |
---|
| 1775 | channelTypePtr = &fileChannelType; |
---|
| 1776 | fsPtr = (FileState *) ckalloc((unsigned) sizeof(FileState)); |
---|
| 1777 | sprintf(channelName, "file%d", fd); |
---|
| 1778 | } |
---|
| 1779 | |
---|
| 1780 | fsPtr->fd = fd; |
---|
| 1781 | fsPtr->validMask = mode | TCL_EXCEPTION; |
---|
| 1782 | fsPtr->channel = Tcl_CreateChannel(channelTypePtr, channelName, |
---|
| 1783 | (ClientData) fsPtr, mode); |
---|
| 1784 | |
---|
| 1785 | return fsPtr->channel; |
---|
| 1786 | } |
---|
| 1787 | |
---|
| 1788 | /* |
---|
| 1789 | *---------------------------------------------------------------------- |
---|
| 1790 | * |
---|
| 1791 | * TcpBlockModeProc -- |
---|
| 1792 | * |
---|
| 1793 | * This function is invoked by the generic IO level to set blocking and |
---|
| 1794 | * nonblocking mode on a TCP socket based channel. |
---|
| 1795 | * |
---|
| 1796 | * Results: |
---|
| 1797 | * 0 if successful, errno when failed. |
---|
| 1798 | * |
---|
| 1799 | * Side effects: |
---|
| 1800 | * Sets the device into blocking or nonblocking mode. |
---|
| 1801 | * |
---|
| 1802 | *---------------------------------------------------------------------- |
---|
| 1803 | */ |
---|
| 1804 | |
---|
| 1805 | /* ARGSUSED */ |
---|
| 1806 | static int |
---|
| 1807 | TcpBlockModeProc( |
---|
| 1808 | ClientData instanceData, /* Socket state. */ |
---|
| 1809 | int mode) /* The mode to set. Can be one of |
---|
| 1810 | * TCL_MODE_BLOCKING or |
---|
| 1811 | * TCL_MODE_NONBLOCKING. */ |
---|
| 1812 | { |
---|
| 1813 | TcpState *statePtr = (TcpState *) instanceData; |
---|
| 1814 | |
---|
| 1815 | if (mode == TCL_MODE_BLOCKING) { |
---|
| 1816 | CLEAR_BITS(statePtr->flags, TCP_ASYNC_SOCKET); |
---|
| 1817 | } else { |
---|
| 1818 | SET_BITS(statePtr->flags, TCP_ASYNC_SOCKET); |
---|
| 1819 | } |
---|
| 1820 | if (TclUnixSetBlockingMode(statePtr->fd, mode) < 0) { |
---|
| 1821 | return errno; |
---|
| 1822 | } |
---|
| 1823 | return 0; |
---|
| 1824 | } |
---|
| 1825 | |
---|
| 1826 | /* |
---|
| 1827 | *---------------------------------------------------------------------- |
---|
| 1828 | * |
---|
| 1829 | * WaitForConnect -- |
---|
| 1830 | * |
---|
| 1831 | * Waits for a connection on an asynchronously opened socket to be |
---|
| 1832 | * completed. |
---|
| 1833 | * |
---|
| 1834 | * Results: |
---|
| 1835 | * None. |
---|
| 1836 | * |
---|
| 1837 | * Side effects: |
---|
| 1838 | * The socket is connected after this function returns. |
---|
| 1839 | * |
---|
| 1840 | *---------------------------------------------------------------------- |
---|
| 1841 | */ |
---|
| 1842 | |
---|
| 1843 | static int |
---|
| 1844 | WaitForConnect( |
---|
| 1845 | TcpState *statePtr, /* State of the socket. */ |
---|
| 1846 | int *errorCodePtr) /* Where to store errors? */ |
---|
| 1847 | { |
---|
| 1848 | int timeOut; /* How long to wait. */ |
---|
| 1849 | int state; /* Of calling TclWaitForFile. */ |
---|
| 1850 | |
---|
| 1851 | /* |
---|
| 1852 | * If an asynchronous connect is in progress, attempt to wait for it to |
---|
| 1853 | * complete before reading. |
---|
| 1854 | */ |
---|
| 1855 | |
---|
| 1856 | if (statePtr->flags & TCP_ASYNC_CONNECT) { |
---|
| 1857 | if (statePtr->flags & TCP_ASYNC_SOCKET) { |
---|
| 1858 | timeOut = 0; |
---|
| 1859 | } else { |
---|
| 1860 | timeOut = -1; |
---|
| 1861 | } |
---|
| 1862 | errno = 0; |
---|
| 1863 | state = TclUnixWaitForFile(statePtr->fd, |
---|
| 1864 | TCL_WRITABLE | TCL_EXCEPTION, timeOut); |
---|
| 1865 | if (!(statePtr->flags & TCP_ASYNC_SOCKET)) { |
---|
| 1866 | (void) TclUnixSetBlockingMode(statePtr->fd, TCL_MODE_BLOCKING); |
---|
| 1867 | } |
---|
| 1868 | if (state & TCL_EXCEPTION) { |
---|
| 1869 | return -1; |
---|
| 1870 | } |
---|
| 1871 | if (state & TCL_WRITABLE) { |
---|
| 1872 | CLEAR_BITS(statePtr->flags, TCP_ASYNC_CONNECT); |
---|
| 1873 | } else if (timeOut == 0) { |
---|
| 1874 | *errorCodePtr = errno = EWOULDBLOCK; |
---|
| 1875 | return -1; |
---|
| 1876 | } |
---|
| 1877 | } |
---|
| 1878 | return 0; |
---|
| 1879 | } |
---|
| 1880 | |
---|
| 1881 | /* |
---|
| 1882 | *---------------------------------------------------------------------- |
---|
| 1883 | * |
---|
| 1884 | * TcpInputProc -- |
---|
| 1885 | * |
---|
| 1886 | * This function is invoked by the generic IO level to read input from a |
---|
| 1887 | * TCP socket based channel. |
---|
| 1888 | * |
---|
| 1889 | * NOTE: We cannot share code with FilePipeInputProc because here we must |
---|
| 1890 | * use recv to obtain the input from the channel, not read. |
---|
| 1891 | * |
---|
| 1892 | * Results: |
---|
| 1893 | * The number of bytes read is returned or -1 on error. An output |
---|
| 1894 | * argument contains the POSIX error code on error, or zero if no error |
---|
| 1895 | * occurred. |
---|
| 1896 | * |
---|
| 1897 | * Side effects: |
---|
| 1898 | * Reads input from the input device of the channel. |
---|
| 1899 | * |
---|
| 1900 | *---------------------------------------------------------------------- |
---|
| 1901 | */ |
---|
| 1902 | |
---|
| 1903 | /* ARGSUSED */ |
---|
| 1904 | static int |
---|
| 1905 | TcpInputProc( |
---|
| 1906 | ClientData instanceData, /* Socket state. */ |
---|
| 1907 | char *buf, /* Where to store data read. */ |
---|
| 1908 | int bufSize, /* How much space is available in the |
---|
| 1909 | * buffer? */ |
---|
| 1910 | int *errorCodePtr) /* Where to store error code. */ |
---|
| 1911 | { |
---|
| 1912 | TcpState *statePtr = (TcpState *) instanceData; |
---|
| 1913 | int bytesRead, state; |
---|
| 1914 | |
---|
| 1915 | *errorCodePtr = 0; |
---|
| 1916 | state = WaitForConnect(statePtr, errorCodePtr); |
---|
| 1917 | if (state != 0) { |
---|
| 1918 | return -1; |
---|
| 1919 | } |
---|
| 1920 | bytesRead = recv(statePtr->fd, buf, (size_t) bufSize, 0); |
---|
| 1921 | if (bytesRead > -1) { |
---|
| 1922 | return bytesRead; |
---|
| 1923 | } |
---|
| 1924 | if (errno == ECONNRESET) { |
---|
| 1925 | /* |
---|
| 1926 | * Turn ECONNRESET into a soft EOF condition. |
---|
| 1927 | */ |
---|
| 1928 | |
---|
| 1929 | return 0; |
---|
| 1930 | } |
---|
| 1931 | *errorCodePtr = errno; |
---|
| 1932 | return -1; |
---|
| 1933 | } |
---|
| 1934 | |
---|
| 1935 | /* |
---|
| 1936 | *---------------------------------------------------------------------- |
---|
| 1937 | * |
---|
| 1938 | * TcpOutputProc -- |
---|
| 1939 | * |
---|
| 1940 | * This function is invoked by the generic IO level to write output to a |
---|
| 1941 | * TCP socket based channel. |
---|
| 1942 | * |
---|
| 1943 | * NOTE: We cannot share code with FilePipeOutputProc because here we |
---|
| 1944 | * must use send, not write, to get reliable error reporting. |
---|
| 1945 | * |
---|
| 1946 | * Results: |
---|
| 1947 | * The number of bytes written is returned. An output argument is set to |
---|
| 1948 | * a POSIX error code if an error occurred, or zero. |
---|
| 1949 | * |
---|
| 1950 | * Side effects: |
---|
| 1951 | * Writes output on the output device of the channel. |
---|
| 1952 | * |
---|
| 1953 | *---------------------------------------------------------------------- |
---|
| 1954 | */ |
---|
| 1955 | |
---|
| 1956 | static int |
---|
| 1957 | TcpOutputProc( |
---|
| 1958 | ClientData instanceData, /* Socket state. */ |
---|
| 1959 | const char *buf, /* The data buffer. */ |
---|
| 1960 | int toWrite, /* How many bytes to write? */ |
---|
| 1961 | int *errorCodePtr) /* Where to store error code. */ |
---|
| 1962 | { |
---|
| 1963 | TcpState *statePtr = (TcpState *) instanceData; |
---|
| 1964 | int written; |
---|
| 1965 | int state; /* Of waiting for connection. */ |
---|
| 1966 | |
---|
| 1967 | *errorCodePtr = 0; |
---|
| 1968 | state = WaitForConnect(statePtr, errorCodePtr); |
---|
| 1969 | if (state != 0) { |
---|
| 1970 | return -1; |
---|
| 1971 | } |
---|
| 1972 | written = send(statePtr->fd, buf, (size_t) toWrite, 0); |
---|
| 1973 | if (written > -1) { |
---|
| 1974 | return written; |
---|
| 1975 | } |
---|
| 1976 | *errorCodePtr = errno; |
---|
| 1977 | return -1; |
---|
| 1978 | } |
---|
| 1979 | |
---|
| 1980 | /* |
---|
| 1981 | *---------------------------------------------------------------------- |
---|
| 1982 | * |
---|
| 1983 | * TcpCloseProc -- |
---|
| 1984 | * |
---|
| 1985 | * This function is invoked by the generic IO level to perform |
---|
| 1986 | * channel-type-specific cleanup when a TCP socket based channel is |
---|
| 1987 | * closed. |
---|
| 1988 | * |
---|
| 1989 | * Results: |
---|
| 1990 | * 0 if successful, the value of errno if failed. |
---|
| 1991 | * |
---|
| 1992 | * Side effects: |
---|
| 1993 | * Closes the socket of the channel. |
---|
| 1994 | * |
---|
| 1995 | *---------------------------------------------------------------------- |
---|
| 1996 | */ |
---|
| 1997 | |
---|
| 1998 | /* ARGSUSED */ |
---|
| 1999 | static int |
---|
| 2000 | TcpCloseProc( |
---|
| 2001 | ClientData instanceData, /* The socket to close. */ |
---|
| 2002 | Tcl_Interp *interp) /* For error reporting - unused. */ |
---|
| 2003 | { |
---|
| 2004 | TcpState *statePtr = (TcpState *) instanceData; |
---|
| 2005 | int errorCode = 0; |
---|
| 2006 | |
---|
| 2007 | /* |
---|
| 2008 | * Delete a file handler that may be active for this socket if this is a |
---|
| 2009 | * server socket - the file handler was created automatically by Tcl as |
---|
| 2010 | * part of the mechanism to accept new client connections. Channel |
---|
| 2011 | * handlers are already deleted in the generic IO channel closing code |
---|
| 2012 | * that called this function, so we do not have to delete them here. |
---|
| 2013 | */ |
---|
| 2014 | |
---|
| 2015 | Tcl_DeleteFileHandler(statePtr->fd); |
---|
| 2016 | |
---|
| 2017 | if (close(statePtr->fd) < 0) { |
---|
| 2018 | errorCode = errno; |
---|
| 2019 | } |
---|
| 2020 | ckfree((char *) statePtr); |
---|
| 2021 | |
---|
| 2022 | return errorCode; |
---|
| 2023 | } |
---|
| 2024 | |
---|
| 2025 | /* |
---|
| 2026 | *---------------------------------------------------------------------- |
---|
| 2027 | * |
---|
| 2028 | * TcpGetOptionProc -- |
---|
| 2029 | * |
---|
| 2030 | * Computes an option value for a TCP socket based channel, or a list of |
---|
| 2031 | * all options and their values. |
---|
| 2032 | * |
---|
| 2033 | * Note: This code is based on code contributed by John Haxby. |
---|
| 2034 | * |
---|
| 2035 | * Results: |
---|
| 2036 | * A standard Tcl result. The value of the specified option or a list of |
---|
| 2037 | * all options and their values is returned in the supplied DString. Sets |
---|
| 2038 | * Error message if needed. |
---|
| 2039 | * |
---|
| 2040 | * Side effects: |
---|
| 2041 | * None. |
---|
| 2042 | * |
---|
| 2043 | *---------------------------------------------------------------------- |
---|
| 2044 | */ |
---|
| 2045 | |
---|
| 2046 | static int |
---|
| 2047 | TcpGetOptionProc( |
---|
| 2048 | ClientData instanceData, /* Socket state. */ |
---|
| 2049 | Tcl_Interp *interp, /* For error reporting - can be NULL. */ |
---|
| 2050 | const char *optionName, /* Name of the option to retrieve the value |
---|
| 2051 | * for, or NULL to get all options and their |
---|
| 2052 | * values. */ |
---|
| 2053 | Tcl_DString *dsPtr) /* Where to store the computed value; |
---|
| 2054 | * initialized by caller. */ |
---|
| 2055 | { |
---|
| 2056 | TcpState *statePtr = (TcpState *) instanceData; |
---|
| 2057 | struct sockaddr_in sockname; |
---|
| 2058 | struct sockaddr_in peername; |
---|
| 2059 | struct hostent *hostEntPtr; |
---|
| 2060 | socklen_t size = sizeof(struct sockaddr_in); |
---|
| 2061 | size_t len = 0; |
---|
| 2062 | char buf[TCL_INTEGER_SPACE]; |
---|
| 2063 | |
---|
| 2064 | if (optionName != NULL) { |
---|
| 2065 | len = strlen(optionName); |
---|
| 2066 | } |
---|
| 2067 | |
---|
| 2068 | if ((len > 1) && (optionName[1] == 'e') && |
---|
| 2069 | (strncmp(optionName, "-error", len) == 0)) { |
---|
| 2070 | socklen_t optlen = sizeof(int); |
---|
| 2071 | int err, ret; |
---|
| 2072 | |
---|
| 2073 | ret = getsockopt(statePtr->fd, SOL_SOCKET, SO_ERROR, |
---|
| 2074 | (char *)&err, &optlen); |
---|
| 2075 | if (ret < 0) { |
---|
| 2076 | err = errno; |
---|
| 2077 | } |
---|
| 2078 | if (err != 0) { |
---|
| 2079 | Tcl_DStringAppend(dsPtr, Tcl_ErrnoMsg(err), -1); |
---|
| 2080 | } |
---|
| 2081 | return TCL_OK; |
---|
| 2082 | } |
---|
| 2083 | |
---|
| 2084 | if ((len == 0) || |
---|
| 2085 | ((len > 1) && (optionName[1] == 'p') && |
---|
| 2086 | (strncmp(optionName, "-peername", len) == 0))) { |
---|
| 2087 | if (getpeername(statePtr->fd, (struct sockaddr *) &peername, |
---|
| 2088 | &size) >= 0) { |
---|
| 2089 | if (len == 0) { |
---|
| 2090 | Tcl_DStringAppendElement(dsPtr, "-peername"); |
---|
| 2091 | Tcl_DStringStartSublist(dsPtr); |
---|
| 2092 | } |
---|
| 2093 | Tcl_DStringAppendElement(dsPtr, inet_ntoa(peername.sin_addr)); |
---|
| 2094 | hostEntPtr = TclpGetHostByAddr( /* INTL: Native. */ |
---|
| 2095 | (char *) &peername.sin_addr, |
---|
| 2096 | sizeof(peername.sin_addr), AF_INET); |
---|
| 2097 | if (hostEntPtr != NULL) { |
---|
| 2098 | Tcl_DString ds; |
---|
| 2099 | |
---|
| 2100 | Tcl_ExternalToUtfDString(NULL, hostEntPtr->h_name, -1, &ds); |
---|
| 2101 | Tcl_DStringAppendElement(dsPtr, Tcl_DStringValue(&ds)); |
---|
| 2102 | Tcl_DStringFree(&ds); |
---|
| 2103 | } else { |
---|
| 2104 | Tcl_DStringAppendElement(dsPtr, inet_ntoa(peername.sin_addr)); |
---|
| 2105 | } |
---|
| 2106 | TclFormatInt(buf, ntohs(peername.sin_port)); |
---|
| 2107 | Tcl_DStringAppendElement(dsPtr, buf); |
---|
| 2108 | if (len == 0) { |
---|
| 2109 | Tcl_DStringEndSublist(dsPtr); |
---|
| 2110 | } else { |
---|
| 2111 | return TCL_OK; |
---|
| 2112 | } |
---|
| 2113 | } else { |
---|
| 2114 | /* |
---|
| 2115 | * getpeername failed - but if we were asked for all the options |
---|
| 2116 | * (len==0), don't flag an error at that point because it could be |
---|
| 2117 | * an fconfigure request on a server socket (which have no peer). |
---|
| 2118 | * Same must be done on win&mac. |
---|
| 2119 | */ |
---|
| 2120 | |
---|
| 2121 | if (len) { |
---|
| 2122 | if (interp) { |
---|
| 2123 | Tcl_AppendResult(interp, "can't get peername: ", |
---|
| 2124 | Tcl_PosixError(interp), NULL); |
---|
| 2125 | } |
---|
| 2126 | return TCL_ERROR; |
---|
| 2127 | } |
---|
| 2128 | } |
---|
| 2129 | } |
---|
| 2130 | |
---|
| 2131 | if ((len == 0) || |
---|
| 2132 | ((len > 1) && (optionName[1] == 's') && |
---|
| 2133 | (strncmp(optionName, "-sockname", len) == 0))) { |
---|
| 2134 | if (getsockname(statePtr->fd, (struct sockaddr *) &sockname, |
---|
| 2135 | &size) >= 0) { |
---|
| 2136 | if (len == 0) { |
---|
| 2137 | Tcl_DStringAppendElement(dsPtr, "-sockname"); |
---|
| 2138 | Tcl_DStringStartSublist(dsPtr); |
---|
| 2139 | } |
---|
| 2140 | Tcl_DStringAppendElement(dsPtr, inet_ntoa(sockname.sin_addr)); |
---|
| 2141 | hostEntPtr = TclpGetHostByAddr( /* INTL: Native. */ |
---|
| 2142 | (char *) &sockname.sin_addr, |
---|
| 2143 | sizeof(sockname.sin_addr), AF_INET); |
---|
| 2144 | if (hostEntPtr != NULL) { |
---|
| 2145 | Tcl_DString ds; |
---|
| 2146 | |
---|
| 2147 | Tcl_ExternalToUtfDString(NULL, hostEntPtr->h_name, -1, &ds); |
---|
| 2148 | Tcl_DStringAppendElement(dsPtr, Tcl_DStringValue(&ds)); |
---|
| 2149 | Tcl_DStringFree(&ds); |
---|
| 2150 | } else { |
---|
| 2151 | Tcl_DStringAppendElement(dsPtr, inet_ntoa(sockname.sin_addr)); |
---|
| 2152 | } |
---|
| 2153 | TclFormatInt(buf, ntohs(sockname.sin_port)); |
---|
| 2154 | Tcl_DStringAppendElement(dsPtr, buf); |
---|
| 2155 | if (len == 0) { |
---|
| 2156 | Tcl_DStringEndSublist(dsPtr); |
---|
| 2157 | } else { |
---|
| 2158 | return TCL_OK; |
---|
| 2159 | } |
---|
| 2160 | } else { |
---|
| 2161 | if (interp) { |
---|
| 2162 | Tcl_AppendResult(interp, "can't get sockname: ", |
---|
| 2163 | Tcl_PosixError(interp), NULL); |
---|
| 2164 | } |
---|
| 2165 | return TCL_ERROR; |
---|
| 2166 | } |
---|
| 2167 | } |
---|
| 2168 | |
---|
| 2169 | if (len > 0) { |
---|
| 2170 | return Tcl_BadChannelOption(interp, optionName, "peername sockname"); |
---|
| 2171 | } |
---|
| 2172 | |
---|
| 2173 | return TCL_OK; |
---|
| 2174 | } |
---|
| 2175 | |
---|
| 2176 | /* |
---|
| 2177 | *---------------------------------------------------------------------- |
---|
| 2178 | * |
---|
| 2179 | * TcpWatchProc -- |
---|
| 2180 | * |
---|
| 2181 | * Initialize the notifier to watch the fd from this channel. |
---|
| 2182 | * |
---|
| 2183 | * Results: |
---|
| 2184 | * None. |
---|
| 2185 | * |
---|
| 2186 | * Side effects: |
---|
| 2187 | * Sets up the notifier so that a future event on the channel will be |
---|
| 2188 | * seen by Tcl. |
---|
| 2189 | * |
---|
| 2190 | *---------------------------------------------------------------------- |
---|
| 2191 | */ |
---|
| 2192 | |
---|
| 2193 | static void |
---|
| 2194 | TcpWatchProc( |
---|
| 2195 | ClientData instanceData, /* The socket state. */ |
---|
| 2196 | int mask) /* Events of interest; an OR-ed combination of |
---|
| 2197 | * TCL_READABLE, TCL_WRITABLE and |
---|
| 2198 | * TCL_EXCEPTION. */ |
---|
| 2199 | { |
---|
| 2200 | TcpState *statePtr = (TcpState *) instanceData; |
---|
| 2201 | |
---|
| 2202 | /* |
---|
| 2203 | * Make sure we don't mess with server sockets since they will never be |
---|
| 2204 | * readable or writable at the Tcl level. This keeps Tcl scripts from |
---|
| 2205 | * interfering with the -accept behavior. |
---|
| 2206 | */ |
---|
| 2207 | |
---|
| 2208 | if (!statePtr->acceptProc) { |
---|
| 2209 | if (mask) { |
---|
| 2210 | Tcl_CreateFileHandler(statePtr->fd, mask, |
---|
| 2211 | (Tcl_FileProc *) Tcl_NotifyChannel, |
---|
| 2212 | (ClientData) statePtr->channel); |
---|
| 2213 | } else { |
---|
| 2214 | Tcl_DeleteFileHandler(statePtr->fd); |
---|
| 2215 | } |
---|
| 2216 | } |
---|
| 2217 | } |
---|
| 2218 | |
---|
| 2219 | /* |
---|
| 2220 | *---------------------------------------------------------------------- |
---|
| 2221 | * |
---|
| 2222 | * TcpGetHandleProc -- |
---|
| 2223 | * |
---|
| 2224 | * Called from Tcl_GetChannelHandle to retrieve OS handles from inside a |
---|
| 2225 | * TCP socket based channel. |
---|
| 2226 | * |
---|
| 2227 | * Results: |
---|
| 2228 | * Returns TCL_OK with the fd in handlePtr, or TCL_ERROR if there is no |
---|
| 2229 | * handle for the specified direction. |
---|
| 2230 | * |
---|
| 2231 | * Side effects: |
---|
| 2232 | * None. |
---|
| 2233 | * |
---|
| 2234 | *---------------------------------------------------------------------- |
---|
| 2235 | */ |
---|
| 2236 | |
---|
| 2237 | /* ARGSUSED */ |
---|
| 2238 | static int |
---|
| 2239 | TcpGetHandleProc( |
---|
| 2240 | ClientData instanceData, /* The socket state. */ |
---|
| 2241 | int direction, /* Not used. */ |
---|
| 2242 | ClientData *handlePtr) /* Where to store the handle. */ |
---|
| 2243 | { |
---|
| 2244 | TcpState *statePtr = (TcpState *) instanceData; |
---|
| 2245 | |
---|
| 2246 | *handlePtr = (ClientData) INT2PTR(statePtr->fd); |
---|
| 2247 | return TCL_OK; |
---|
| 2248 | } |
---|
| 2249 | |
---|
| 2250 | /* |
---|
| 2251 | *---------------------------------------------------------------------- |
---|
| 2252 | * |
---|
| 2253 | * CreateSocket -- |
---|
| 2254 | * |
---|
| 2255 | * This function opens a new socket in client or server mode and |
---|
| 2256 | * initializes the TcpState structure. |
---|
| 2257 | * |
---|
| 2258 | * Results: |
---|
| 2259 | * Returns a new TcpState, or NULL with an error in the interp's result, |
---|
| 2260 | * if interp is not NULL. |
---|
| 2261 | * |
---|
| 2262 | * Side effects: |
---|
| 2263 | * Opens a socket. |
---|
| 2264 | * |
---|
| 2265 | *---------------------------------------------------------------------- |
---|
| 2266 | */ |
---|
| 2267 | |
---|
| 2268 | static TcpState * |
---|
| 2269 | CreateSocket( |
---|
| 2270 | Tcl_Interp *interp, /* For error reporting; can be NULL. */ |
---|
| 2271 | int port, /* Port number to open. */ |
---|
| 2272 | const char *host, /* Name of host on which to open port. NULL |
---|
| 2273 | * implies INADDR_ANY */ |
---|
| 2274 | int server, /* 1 if socket should be a server socket, else |
---|
| 2275 | * 0 for a client socket. */ |
---|
| 2276 | const char *myaddr, /* Optional client-side address */ |
---|
| 2277 | int myport, /* Optional client-side port */ |
---|
| 2278 | int async) /* If nonzero and creating a client socket, |
---|
| 2279 | * attempt to do an async connect. Otherwise |
---|
| 2280 | * do a synchronous connect or bind. */ |
---|
| 2281 | { |
---|
| 2282 | int status, sock, asyncConnect, curState, origState; |
---|
| 2283 | struct sockaddr_in sockaddr; /* socket address */ |
---|
| 2284 | struct sockaddr_in mysockaddr; /* Socket address for client */ |
---|
| 2285 | TcpState *statePtr; |
---|
| 2286 | const char *errorMsg = NULL; |
---|
| 2287 | |
---|
| 2288 | sock = -1; |
---|
| 2289 | origState = 0; |
---|
| 2290 | if (!CreateSocketAddress(&sockaddr, host, port, 0, &errorMsg)) { |
---|
| 2291 | goto addressError; |
---|
| 2292 | } |
---|
| 2293 | if ((myaddr != NULL || myport != 0) && |
---|
| 2294 | !CreateSocketAddress(&mysockaddr, myaddr, myport, 1, &errorMsg)) { |
---|
| 2295 | goto addressError; |
---|
| 2296 | } |
---|
| 2297 | |
---|
| 2298 | sock = socket(AF_INET, SOCK_STREAM, 0); |
---|
| 2299 | if (sock < 0) { |
---|
| 2300 | goto addressError; |
---|
| 2301 | } |
---|
| 2302 | |
---|
| 2303 | /* |
---|
| 2304 | * Set the close-on-exec flag so that the socket will not get inherited by |
---|
| 2305 | * child processes. |
---|
| 2306 | */ |
---|
| 2307 | |
---|
| 2308 | fcntl(sock, F_SETFD, FD_CLOEXEC); |
---|
| 2309 | |
---|
| 2310 | /* |
---|
| 2311 | * Set kernel space buffering |
---|
| 2312 | */ |
---|
| 2313 | |
---|
| 2314 | TclSockMinimumBuffers(sock, SOCKET_BUFSIZE); |
---|
| 2315 | |
---|
| 2316 | asyncConnect = 0; |
---|
| 2317 | status = 0; |
---|
| 2318 | if (server) { |
---|
| 2319 | /* |
---|
| 2320 | * Set up to reuse server addresses automatically and bind to the |
---|
| 2321 | * specified port. |
---|
| 2322 | */ |
---|
| 2323 | |
---|
| 2324 | status = 1; |
---|
| 2325 | (void) setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *) &status, |
---|
| 2326 | sizeof(status)); |
---|
| 2327 | status = bind(sock, (struct sockaddr *) &sockaddr, |
---|
| 2328 | sizeof(struct sockaddr)); |
---|
| 2329 | if (status != -1) { |
---|
| 2330 | status = listen(sock, SOMAXCONN); |
---|
| 2331 | } |
---|
| 2332 | } else { |
---|
| 2333 | if (myaddr != NULL || myport != 0) { |
---|
| 2334 | curState = 1; |
---|
| 2335 | (void) setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, |
---|
| 2336 | (char *) &curState, sizeof(curState)); |
---|
| 2337 | status = bind(sock, (struct sockaddr *) &mysockaddr, |
---|
| 2338 | sizeof(struct sockaddr)); |
---|
| 2339 | if (status < 0) { |
---|
| 2340 | goto bindError; |
---|
| 2341 | } |
---|
| 2342 | } |
---|
| 2343 | |
---|
| 2344 | /* |
---|
| 2345 | * Attempt to connect. The connect may fail at present with an |
---|
| 2346 | * EINPROGRESS but at a later time it will complete. The caller will |
---|
| 2347 | * set up a file handler on the socket if she is interested in being |
---|
| 2348 | * informed when the connect completes. |
---|
| 2349 | */ |
---|
| 2350 | |
---|
| 2351 | if (async) { |
---|
| 2352 | status = TclUnixSetBlockingMode(sock, TCL_MODE_NONBLOCKING); |
---|
| 2353 | } else { |
---|
| 2354 | status = 0; |
---|
| 2355 | } |
---|
| 2356 | if (status > -1) { |
---|
| 2357 | status = connect(sock, (struct sockaddr *) &sockaddr, |
---|
| 2358 | sizeof(sockaddr)); |
---|
| 2359 | if (status < 0) { |
---|
| 2360 | if (errno == EINPROGRESS) { |
---|
| 2361 | asyncConnect = 1; |
---|
| 2362 | status = 0; |
---|
| 2363 | } |
---|
| 2364 | } else { |
---|
| 2365 | /* |
---|
| 2366 | * Here we are if the connect succeeds. In case of an |
---|
| 2367 | * asynchronous connect we have to reset the channel to |
---|
| 2368 | * blocking mode. This appears to happen not very often, but |
---|
| 2369 | * e.g. on a HP 9000/800 under HP-UX B.11.00 we enter this |
---|
| 2370 | * stage. [Bug: 4388] |
---|
| 2371 | */ |
---|
| 2372 | |
---|
| 2373 | if (async) { |
---|
| 2374 | status = TclUnixSetBlockingMode(sock, TCL_MODE_BLOCKING); |
---|
| 2375 | } |
---|
| 2376 | } |
---|
| 2377 | } |
---|
| 2378 | } |
---|
| 2379 | |
---|
| 2380 | bindError: |
---|
| 2381 | if (status < 0) { |
---|
| 2382 | if (interp != NULL) { |
---|
| 2383 | Tcl_AppendResult(interp, "couldn't open socket: ", |
---|
| 2384 | Tcl_PosixError(interp), NULL); |
---|
| 2385 | } |
---|
| 2386 | if (sock != -1) { |
---|
| 2387 | close(sock); |
---|
| 2388 | } |
---|
| 2389 | return NULL; |
---|
| 2390 | } |
---|
| 2391 | |
---|
| 2392 | /* |
---|
| 2393 | * Allocate a new TcpState for this socket. |
---|
| 2394 | */ |
---|
| 2395 | |
---|
| 2396 | statePtr = (TcpState *) ckalloc((unsigned) sizeof(TcpState)); |
---|
| 2397 | statePtr->flags = 0; |
---|
| 2398 | if (asyncConnect) { |
---|
| 2399 | statePtr->flags = TCP_ASYNC_CONNECT; |
---|
| 2400 | } |
---|
| 2401 | statePtr->fd = sock; |
---|
| 2402 | |
---|
| 2403 | return statePtr; |
---|
| 2404 | |
---|
| 2405 | addressError: |
---|
| 2406 | if (sock != -1) { |
---|
| 2407 | close(sock); |
---|
| 2408 | } |
---|
| 2409 | if (interp != NULL) { |
---|
| 2410 | Tcl_AppendResult(interp, "couldn't open socket: ", |
---|
| 2411 | Tcl_PosixError(interp), NULL); |
---|
| 2412 | if (errorMsg != NULL) { |
---|
| 2413 | Tcl_AppendResult(interp, " (", errorMsg, ")", NULL); |
---|
| 2414 | } |
---|
| 2415 | } |
---|
| 2416 | return NULL; |
---|
| 2417 | } |
---|
| 2418 | |
---|
| 2419 | /* |
---|
| 2420 | *---------------------------------------------------------------------- |
---|
| 2421 | * |
---|
| 2422 | * CreateSocketAddress -- |
---|
| 2423 | * |
---|
| 2424 | * This function initializes a sockaddr structure for a host and port. |
---|
| 2425 | * |
---|
| 2426 | * Results: |
---|
| 2427 | * 1 if the host was valid, 0 if the host could not be converted to an IP |
---|
| 2428 | * address. |
---|
| 2429 | * |
---|
| 2430 | * Side effects: |
---|
| 2431 | * Fills in the *sockaddrPtr structure. |
---|
| 2432 | * |
---|
| 2433 | *---------------------------------------------------------------------- |
---|
| 2434 | */ |
---|
| 2435 | |
---|
| 2436 | static int |
---|
| 2437 | CreateSocketAddress( |
---|
| 2438 | struct sockaddr_in *sockaddrPtr, /* Socket address */ |
---|
| 2439 | const char *host, /* Host. NULL implies INADDR_ANY */ |
---|
| 2440 | int port, /* Port number */ |
---|
| 2441 | int willBind, /* Is this an address to bind() to or |
---|
| 2442 | * to connect() to? */ |
---|
| 2443 | const char **errorMsgPtr) /* Place to store the error message |
---|
| 2444 | * detail, if available. */ |
---|
| 2445 | { |
---|
| 2446 | #ifdef HAVE_GETADDRINFO |
---|
| 2447 | struct addrinfo hints, *resPtr = NULL; |
---|
| 2448 | char *native; |
---|
| 2449 | Tcl_DString ds; |
---|
| 2450 | int result; |
---|
| 2451 | |
---|
| 2452 | if (host == NULL) { |
---|
| 2453 | sockaddrPtr->sin_family = AF_INET; |
---|
| 2454 | sockaddrPtr->sin_addr.s_addr = INADDR_ANY; |
---|
| 2455 | addPort: |
---|
| 2456 | sockaddrPtr->sin_port = htons((unsigned short) (port & 0xFFFF)); |
---|
| 2457 | return 1; |
---|
| 2458 | } |
---|
| 2459 | |
---|
| 2460 | (void) memset(&hints, 0, sizeof(struct addrinfo)); |
---|
| 2461 | hints.ai_family = AF_INET; |
---|
| 2462 | hints.ai_socktype = SOCK_STREAM; |
---|
| 2463 | if (willBind) { |
---|
| 2464 | hints.ai_flags |= AI_PASSIVE; |
---|
| 2465 | } |
---|
| 2466 | |
---|
| 2467 | /* |
---|
| 2468 | * Note that getaddrinfo() *is* thread-safe. If a platform doesn't get |
---|
| 2469 | * that right, it shouldn't use this part of the code. |
---|
| 2470 | */ |
---|
| 2471 | |
---|
| 2472 | native = Tcl_UtfToExternalDString(NULL, host, -1, &ds); |
---|
| 2473 | result = getaddrinfo(native, NULL, &hints, &resPtr); |
---|
| 2474 | Tcl_DStringFree(&ds); |
---|
| 2475 | if (result == 0) { |
---|
| 2476 | memcpy(sockaddrPtr, resPtr->ai_addr, sizeof(struct sockaddr_in)); |
---|
| 2477 | freeaddrinfo(resPtr); |
---|
| 2478 | goto addPort; |
---|
| 2479 | } |
---|
| 2480 | |
---|
| 2481 | /* |
---|
| 2482 | * Ought to use gai_strerror() here... |
---|
| 2483 | */ |
---|
| 2484 | |
---|
| 2485 | switch (result) { |
---|
| 2486 | case EAI_NONAME: |
---|
| 2487 | case EAI_SERVICE: |
---|
| 2488 | #if defined(EAI_ADDRFAMILY) && EAI_ADDRFAMILY != EAI_NONAME |
---|
| 2489 | case EAI_ADDRFAMILY: |
---|
| 2490 | #endif |
---|
| 2491 | #if defined(EAI_NODATA) && EAI_NODATA != EAI_NONAME |
---|
| 2492 | case EAI_NODATA: |
---|
| 2493 | #endif |
---|
| 2494 | *errorMsgPtr = gai_strerror(result); |
---|
| 2495 | errno = EHOSTUNREACH; |
---|
| 2496 | return 0; |
---|
| 2497 | case EAI_SYSTEM: |
---|
| 2498 | return 0; |
---|
| 2499 | default: |
---|
| 2500 | *errorMsgPtr = gai_strerror(result); |
---|
| 2501 | errno = ENXIO; |
---|
| 2502 | return 0; |
---|
| 2503 | } |
---|
| 2504 | #else /* !HAVE_GETADDRINFO */ |
---|
| 2505 | struct in_addr addr; /* For 64/32 bit madness */ |
---|
| 2506 | |
---|
| 2507 | (void) memset(sockaddrPtr, '\0', sizeof(struct sockaddr_in)); |
---|
| 2508 | sockaddrPtr->sin_family = AF_INET; |
---|
| 2509 | sockaddrPtr->sin_port = htons((unsigned short) (port & 0xFFFF)); |
---|
| 2510 | if (host == NULL) { |
---|
| 2511 | addr.s_addr = INADDR_ANY; |
---|
| 2512 | } else { |
---|
| 2513 | struct hostent *hostent; /* Host database entry */ |
---|
| 2514 | Tcl_DString ds; |
---|
| 2515 | const char *native; |
---|
| 2516 | |
---|
| 2517 | if (host == NULL) { |
---|
| 2518 | native = NULL; |
---|
| 2519 | } else { |
---|
| 2520 | native = Tcl_UtfToExternalDString(NULL, host, -1, &ds); |
---|
| 2521 | } |
---|
| 2522 | addr.s_addr = inet_addr(native); /* INTL: Native. */ |
---|
| 2523 | |
---|
| 2524 | /* |
---|
| 2525 | * This is 0xFFFFFFFF to ensure that it compares as a 32bit -1 on |
---|
| 2526 | * either 32 or 64 bits systems. |
---|
| 2527 | */ |
---|
| 2528 | |
---|
| 2529 | if (addr.s_addr == 0xFFFFFFFF) { |
---|
| 2530 | hostent = TclpGetHostByName(native); /* INTL: Native. */ |
---|
| 2531 | if (hostent != NULL) { |
---|
| 2532 | memcpy(&addr, hostent->h_addr_list[0], |
---|
| 2533 | (size_t) hostent->h_length); |
---|
| 2534 | } else { |
---|
| 2535 | #ifdef EHOSTUNREACH |
---|
| 2536 | errno = EHOSTUNREACH; |
---|
| 2537 | #else /* !EHOSTUNREACH */ |
---|
| 2538 | #ifdef ENXIO |
---|
| 2539 | errno = ENXIO; |
---|
| 2540 | #endif /* ENXIO */ |
---|
| 2541 | #endif /* EHOSTUNREACH */ |
---|
| 2542 | if (native != NULL) { |
---|
| 2543 | Tcl_DStringFree(&ds); |
---|
| 2544 | } |
---|
| 2545 | return 0; /* Error. */ |
---|
| 2546 | } |
---|
| 2547 | } |
---|
| 2548 | if (native != NULL) { |
---|
| 2549 | Tcl_DStringFree(&ds); |
---|
| 2550 | } |
---|
| 2551 | } |
---|
| 2552 | |
---|
| 2553 | /* |
---|
| 2554 | * NOTE: On 64 bit machines the assignment below is rumored to not do the |
---|
| 2555 | * right thing. Please report errors related to this if you observe |
---|
| 2556 | * incorrect behavior on 64 bit machines such as DEC Alphas. Should we |
---|
| 2557 | * modify this code to do an explicit memcpy? |
---|
| 2558 | */ |
---|
| 2559 | |
---|
| 2560 | sockaddrPtr->sin_addr.s_addr = addr.s_addr; |
---|
| 2561 | return 1; /* Success. */ |
---|
| 2562 | #endif /* HAVE_GETADDRINFO */ |
---|
| 2563 | } |
---|
| 2564 | |
---|
| 2565 | /* |
---|
| 2566 | *---------------------------------------------------------------------- |
---|
| 2567 | * |
---|
| 2568 | * Tcl_OpenTcpClient -- |
---|
| 2569 | * |
---|
| 2570 | * Opens a TCP client socket and creates a channel around it. |
---|
| 2571 | * |
---|
| 2572 | * Results: |
---|
| 2573 | * The channel or NULL if failed. An error message is returned in the |
---|
| 2574 | * interpreter on failure. |
---|
| 2575 | * |
---|
| 2576 | * Side effects: |
---|
| 2577 | * Opens a client socket and creates a new channel. |
---|
| 2578 | * |
---|
| 2579 | *---------------------------------------------------------------------- |
---|
| 2580 | */ |
---|
| 2581 | |
---|
| 2582 | Tcl_Channel |
---|
| 2583 | Tcl_OpenTcpClient( |
---|
| 2584 | Tcl_Interp *interp, /* For error reporting; can be NULL. */ |
---|
| 2585 | int port, /* Port number to open. */ |
---|
| 2586 | const char *host, /* Host on which to open port. */ |
---|
| 2587 | const char *myaddr, /* Client-side address */ |
---|
| 2588 | int myport, /* Client-side port */ |
---|
| 2589 | int async) /* If nonzero, attempt to do an asynchronous |
---|
| 2590 | * connect. Otherwise we do a blocking |
---|
| 2591 | * connect. */ |
---|
| 2592 | { |
---|
| 2593 | TcpState *statePtr; |
---|
| 2594 | char channelName[16 + TCL_INTEGER_SPACE]; |
---|
| 2595 | |
---|
| 2596 | /* |
---|
| 2597 | * Create a new client socket and wrap it in a channel. |
---|
| 2598 | */ |
---|
| 2599 | |
---|
| 2600 | statePtr = CreateSocket(interp, port, host, 0, myaddr, myport, async); |
---|
| 2601 | if (statePtr == NULL) { |
---|
| 2602 | return NULL; |
---|
| 2603 | } |
---|
| 2604 | |
---|
| 2605 | statePtr->acceptProc = NULL; |
---|
| 2606 | statePtr->acceptProcData = NULL; |
---|
| 2607 | |
---|
| 2608 | sprintf(channelName, "sock%d", statePtr->fd); |
---|
| 2609 | |
---|
| 2610 | statePtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName, |
---|
| 2611 | (ClientData) statePtr, (TCL_READABLE | TCL_WRITABLE)); |
---|
| 2612 | if (Tcl_SetChannelOption(interp, statePtr->channel, "-translation", |
---|
| 2613 | "auto crlf") == TCL_ERROR) { |
---|
| 2614 | Tcl_Close(NULL, statePtr->channel); |
---|
| 2615 | return NULL; |
---|
| 2616 | } |
---|
| 2617 | return statePtr->channel; |
---|
| 2618 | } |
---|
| 2619 | |
---|
| 2620 | /* |
---|
| 2621 | *---------------------------------------------------------------------- |
---|
| 2622 | * |
---|
| 2623 | * Tcl_MakeTcpClientChannel -- |
---|
| 2624 | * |
---|
| 2625 | * Creates a Tcl_Channel from an existing client TCP socket. |
---|
| 2626 | * |
---|
| 2627 | * Results: |
---|
| 2628 | * The Tcl_Channel wrapped around the preexisting TCP socket. |
---|
| 2629 | * |
---|
| 2630 | * Side effects: |
---|
| 2631 | * None. |
---|
| 2632 | * |
---|
| 2633 | *---------------------------------------------------------------------- |
---|
| 2634 | */ |
---|
| 2635 | |
---|
| 2636 | Tcl_Channel |
---|
| 2637 | Tcl_MakeTcpClientChannel( |
---|
| 2638 | ClientData sock) /* The socket to wrap up into a channel. */ |
---|
| 2639 | { |
---|
| 2640 | return MakeTcpClientChannelMode(sock, (TCL_READABLE | TCL_WRITABLE)); |
---|
| 2641 | } |
---|
| 2642 | |
---|
| 2643 | /* |
---|
| 2644 | *---------------------------------------------------------------------- |
---|
| 2645 | * |
---|
| 2646 | * MakeTcpClientChannelMode -- |
---|
| 2647 | * |
---|
| 2648 | * Creates a Tcl_Channel from an existing client TCP socket |
---|
| 2649 | * with given mode. |
---|
| 2650 | * |
---|
| 2651 | * Results: |
---|
| 2652 | * The Tcl_Channel wrapped around the preexisting TCP socket. |
---|
| 2653 | * |
---|
| 2654 | * Side effects: |
---|
| 2655 | * None. |
---|
| 2656 | * |
---|
| 2657 | *---------------------------------------------------------------------- |
---|
| 2658 | */ |
---|
| 2659 | |
---|
| 2660 | static Tcl_Channel |
---|
| 2661 | MakeTcpClientChannelMode( |
---|
| 2662 | ClientData sock, /* The socket to wrap up into a channel. */ |
---|
| 2663 | int mode) /* ORed combination of TCL_READABLE and |
---|
| 2664 | * TCL_WRITABLE to indicate file mode. */ |
---|
| 2665 | { |
---|
| 2666 | TcpState *statePtr; |
---|
| 2667 | char channelName[16 + TCL_INTEGER_SPACE]; |
---|
| 2668 | |
---|
| 2669 | statePtr = (TcpState *) ckalloc((unsigned) sizeof(TcpState)); |
---|
| 2670 | statePtr->fd = PTR2INT(sock); |
---|
| 2671 | statePtr->flags = 0; |
---|
| 2672 | statePtr->acceptProc = NULL; |
---|
| 2673 | statePtr->acceptProcData = NULL; |
---|
| 2674 | |
---|
| 2675 | sprintf(channelName, "sock%d", statePtr->fd); |
---|
| 2676 | |
---|
| 2677 | statePtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName, |
---|
| 2678 | (ClientData) statePtr, mode); |
---|
| 2679 | if (Tcl_SetChannelOption(NULL, statePtr->channel, "-translation", |
---|
| 2680 | "auto crlf") == TCL_ERROR) { |
---|
| 2681 | Tcl_Close(NULL, statePtr->channel); |
---|
| 2682 | return NULL; |
---|
| 2683 | } |
---|
| 2684 | return statePtr->channel; |
---|
| 2685 | } |
---|
| 2686 | |
---|
| 2687 | /* |
---|
| 2688 | *---------------------------------------------------------------------- |
---|
| 2689 | * |
---|
| 2690 | * Tcl_OpenTcpServer -- |
---|
| 2691 | * |
---|
| 2692 | * Opens a TCP server socket and creates a channel around it. |
---|
| 2693 | * |
---|
| 2694 | * Results: |
---|
| 2695 | * The channel or NULL if failed. If an error occurred, an error message |
---|
| 2696 | * is left in the interp's result if interp is not NULL. |
---|
| 2697 | * |
---|
| 2698 | * Side effects: |
---|
| 2699 | * Opens a server socket and creates a new channel. |
---|
| 2700 | * |
---|
| 2701 | *---------------------------------------------------------------------- |
---|
| 2702 | */ |
---|
| 2703 | |
---|
| 2704 | Tcl_Channel |
---|
| 2705 | Tcl_OpenTcpServer( |
---|
| 2706 | Tcl_Interp *interp, /* For error reporting - may be NULL. */ |
---|
| 2707 | int port, /* Port number to open. */ |
---|
| 2708 | const char *myHost, /* Name of local host. */ |
---|
| 2709 | Tcl_TcpAcceptProc *acceptProc, |
---|
| 2710 | /* Callback for accepting connections from new |
---|
| 2711 | * clients. */ |
---|
| 2712 | ClientData acceptProcData) /* Data for the callback. */ |
---|
| 2713 | { |
---|
| 2714 | TcpState *statePtr; |
---|
| 2715 | char channelName[16 + TCL_INTEGER_SPACE]; |
---|
| 2716 | |
---|
| 2717 | /* |
---|
| 2718 | * Create a new client socket and wrap it in a channel. |
---|
| 2719 | */ |
---|
| 2720 | |
---|
| 2721 | statePtr = CreateSocket(interp, port, myHost, 1, NULL, 0, 0); |
---|
| 2722 | if (statePtr == NULL) { |
---|
| 2723 | return NULL; |
---|
| 2724 | } |
---|
| 2725 | |
---|
| 2726 | statePtr->acceptProc = acceptProc; |
---|
| 2727 | statePtr->acceptProcData = acceptProcData; |
---|
| 2728 | |
---|
| 2729 | /* |
---|
| 2730 | * Set up the callback mechanism for accepting connections from new |
---|
| 2731 | * clients. |
---|
| 2732 | */ |
---|
| 2733 | |
---|
| 2734 | Tcl_CreateFileHandler(statePtr->fd, TCL_READABLE, TcpAccept, |
---|
| 2735 | (ClientData) statePtr); |
---|
| 2736 | sprintf(channelName, "sock%d", statePtr->fd); |
---|
| 2737 | statePtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName, |
---|
| 2738 | (ClientData) statePtr, 0); |
---|
| 2739 | return statePtr->channel; |
---|
| 2740 | } |
---|
| 2741 | |
---|
| 2742 | /* |
---|
| 2743 | *---------------------------------------------------------------------- |
---|
| 2744 | * |
---|
| 2745 | * TcpAccept -- |
---|
| 2746 | * Accept a TCP socket connection. This is called by the event loop. |
---|
| 2747 | * |
---|
| 2748 | * Results: |
---|
| 2749 | * None. |
---|
| 2750 | * |
---|
| 2751 | * Side effects: |
---|
| 2752 | * Creates a new connection socket. Calls the registered callback for the |
---|
| 2753 | * connection acceptance mechanism. |
---|
| 2754 | * |
---|
| 2755 | *---------------------------------------------------------------------- |
---|
| 2756 | */ |
---|
| 2757 | |
---|
| 2758 | /* ARGSUSED */ |
---|
| 2759 | static void |
---|
| 2760 | TcpAccept( |
---|
| 2761 | ClientData data, /* Callback token. */ |
---|
| 2762 | int mask) /* Not used. */ |
---|
| 2763 | { |
---|
| 2764 | TcpState *sockState; /* Client data of server socket. */ |
---|
| 2765 | int newsock; /* The new client socket */ |
---|
| 2766 | TcpState *newSockState; /* State for new socket. */ |
---|
| 2767 | struct sockaddr_in addr; /* The remote address */ |
---|
| 2768 | socklen_t len; /* For accept interface */ |
---|
| 2769 | char channelName[16 + TCL_INTEGER_SPACE]; |
---|
| 2770 | |
---|
| 2771 | sockState = (TcpState *) data; |
---|
| 2772 | |
---|
| 2773 | len = sizeof(struct sockaddr_in); |
---|
| 2774 | newsock = accept(sockState->fd, (struct sockaddr *) &addr, &len); |
---|
| 2775 | if (newsock < 0) { |
---|
| 2776 | return; |
---|
| 2777 | } |
---|
| 2778 | |
---|
| 2779 | /* |
---|
| 2780 | * Set close-on-exec flag to prevent the newly accepted socket from being |
---|
| 2781 | * inherited by child processes. |
---|
| 2782 | */ |
---|
| 2783 | |
---|
| 2784 | (void) fcntl(newsock, F_SETFD, FD_CLOEXEC); |
---|
| 2785 | |
---|
| 2786 | newSockState = (TcpState *) ckalloc((unsigned) sizeof(TcpState)); |
---|
| 2787 | |
---|
| 2788 | newSockState->flags = 0; |
---|
| 2789 | newSockState->fd = newsock; |
---|
| 2790 | newSockState->acceptProc = NULL; |
---|
| 2791 | newSockState->acceptProcData = NULL; |
---|
| 2792 | |
---|
| 2793 | sprintf(channelName, "sock%d", newsock); |
---|
| 2794 | newSockState->channel = Tcl_CreateChannel(&tcpChannelType, channelName, |
---|
| 2795 | (ClientData) newSockState, (TCL_READABLE | TCL_WRITABLE)); |
---|
| 2796 | |
---|
| 2797 | Tcl_SetChannelOption(NULL, newSockState->channel, "-translation", |
---|
| 2798 | "auto crlf"); |
---|
| 2799 | |
---|
| 2800 | if (sockState->acceptProc != NULL) { |
---|
| 2801 | (*sockState->acceptProc)(sockState->acceptProcData, |
---|
| 2802 | newSockState->channel, inet_ntoa(addr.sin_addr), |
---|
| 2803 | ntohs(addr.sin_port)); |
---|
| 2804 | } |
---|
| 2805 | } |
---|
| 2806 | |
---|
| 2807 | /* |
---|
| 2808 | *---------------------------------------------------------------------- |
---|
| 2809 | * |
---|
| 2810 | * TclpGetDefaultStdChannel -- |
---|
| 2811 | * |
---|
| 2812 | * Creates channels for standard input, standard output or standard error |
---|
| 2813 | * output if they do not already exist. |
---|
| 2814 | * |
---|
| 2815 | * Results: |
---|
| 2816 | * Returns the specified default standard channel, or NULL. |
---|
| 2817 | * |
---|
| 2818 | * Side effects: |
---|
| 2819 | * May cause the creation of a standard channel and the underlying file. |
---|
| 2820 | * |
---|
| 2821 | *---------------------------------------------------------------------- |
---|
| 2822 | */ |
---|
| 2823 | |
---|
| 2824 | Tcl_Channel |
---|
| 2825 | TclpGetDefaultStdChannel( |
---|
| 2826 | int type) /* One of TCL_STDIN, TCL_STDOUT, TCL_STDERR. */ |
---|
| 2827 | { |
---|
| 2828 | Tcl_Channel channel = NULL; |
---|
| 2829 | int fd = 0; /* Initializations needed to prevent */ |
---|
| 2830 | int mode = 0; /* compiler warning (used before set). */ |
---|
| 2831 | char *bufMode = NULL; |
---|
| 2832 | |
---|
| 2833 | /* |
---|
| 2834 | * Some #def's to make the code a little clearer! |
---|
| 2835 | */ |
---|
| 2836 | |
---|
| 2837 | #define ZERO_OFFSET ((Tcl_SeekOffset) 0) |
---|
| 2838 | #define ERROR_OFFSET ((Tcl_SeekOffset) -1) |
---|
| 2839 | |
---|
| 2840 | switch (type) { |
---|
| 2841 | case TCL_STDIN: |
---|
| 2842 | if ((TclOSseek(0, ZERO_OFFSET, SEEK_CUR) == ERROR_OFFSET) |
---|
| 2843 | && (errno == EBADF)) { |
---|
| 2844 | return NULL; |
---|
| 2845 | } |
---|
| 2846 | fd = 0; |
---|
| 2847 | mode = TCL_READABLE; |
---|
| 2848 | bufMode = "line"; |
---|
| 2849 | break; |
---|
| 2850 | case TCL_STDOUT: |
---|
| 2851 | if ((TclOSseek(1, ZERO_OFFSET, SEEK_CUR) == ERROR_OFFSET) |
---|
| 2852 | && (errno == EBADF)) { |
---|
| 2853 | return NULL; |
---|
| 2854 | } |
---|
| 2855 | fd = 1; |
---|
| 2856 | mode = TCL_WRITABLE; |
---|
| 2857 | bufMode = "line"; |
---|
| 2858 | break; |
---|
| 2859 | case TCL_STDERR: |
---|
| 2860 | if ((TclOSseek(2, ZERO_OFFSET, SEEK_CUR) == ERROR_OFFSET) |
---|
| 2861 | && (errno == EBADF)) { |
---|
| 2862 | return NULL; |
---|
| 2863 | } |
---|
| 2864 | fd = 2; |
---|
| 2865 | mode = TCL_WRITABLE; |
---|
| 2866 | bufMode = "none"; |
---|
| 2867 | break; |
---|
| 2868 | default: |
---|
| 2869 | Tcl_Panic("TclGetDefaultStdChannel: Unexpected channel type"); |
---|
| 2870 | break; |
---|
| 2871 | } |
---|
| 2872 | |
---|
| 2873 | #undef ZERO_OFFSET |
---|
| 2874 | #undef ERROR_OFFSET |
---|
| 2875 | |
---|
| 2876 | channel = Tcl_MakeFileChannel((ClientData) INT2PTR(fd), mode); |
---|
| 2877 | if (channel == NULL) { |
---|
| 2878 | return NULL; |
---|
| 2879 | } |
---|
| 2880 | |
---|
| 2881 | /* |
---|
| 2882 | * Set up the normal channel options for stdio handles. |
---|
| 2883 | */ |
---|
| 2884 | |
---|
| 2885 | if (Tcl_GetChannelType(channel) == &fileChannelType) { |
---|
| 2886 | Tcl_SetChannelOption(NULL, channel, "-translation", "auto"); |
---|
| 2887 | } else { |
---|
| 2888 | Tcl_SetChannelOption(NULL, channel, "-translation", "auto crlf"); |
---|
| 2889 | } |
---|
| 2890 | Tcl_SetChannelOption(NULL, channel, "-buffering", bufMode); |
---|
| 2891 | return channel; |
---|
| 2892 | } |
---|
| 2893 | |
---|
| 2894 | /* |
---|
| 2895 | *---------------------------------------------------------------------- |
---|
| 2896 | * |
---|
| 2897 | * Tcl_GetOpenFile -- |
---|
| 2898 | * |
---|
| 2899 | * Given a name of a channel registered in the given interpreter, returns |
---|
| 2900 | * a FILE * for it. |
---|
| 2901 | * |
---|
| 2902 | * Results: |
---|
| 2903 | * A standard Tcl result. If the channel is registered in the given |
---|
| 2904 | * interpreter and it is managed by the "file" channel driver, and it is |
---|
| 2905 | * open for the requested mode, then the output parameter filePtr is set |
---|
| 2906 | * to a FILE * for the underlying file. On error, the filePtr is not set, |
---|
| 2907 | * TCL_ERROR is returned and an error message is left in the interp's |
---|
| 2908 | * result. |
---|
| 2909 | * |
---|
| 2910 | * Side effects: |
---|
| 2911 | * May invoke fdopen to create the FILE * for the requested file. |
---|
| 2912 | * |
---|
| 2913 | *---------------------------------------------------------------------- |
---|
| 2914 | */ |
---|
| 2915 | |
---|
| 2916 | int |
---|
| 2917 | Tcl_GetOpenFile( |
---|
| 2918 | Tcl_Interp *interp, /* Interpreter in which to find file. */ |
---|
| 2919 | const char *chanID, /* String that identifies file. */ |
---|
| 2920 | int forWriting, /* 1 means the file is going to be used for |
---|
| 2921 | * writing, 0 means for reading. */ |
---|
| 2922 | int checkUsage, /* 1 means verify that the file was opened in |
---|
| 2923 | * a mode that allows the access specified by |
---|
| 2924 | * "forWriting". Ignored, we always check that |
---|
| 2925 | * the channel is open for the requested |
---|
| 2926 | * mode. */ |
---|
| 2927 | ClientData *filePtr) /* Store pointer to FILE structure here. */ |
---|
| 2928 | { |
---|
| 2929 | Tcl_Channel chan; |
---|
| 2930 | int chanMode, fd; |
---|
| 2931 | const Tcl_ChannelType *chanTypePtr; |
---|
| 2932 | ClientData data; |
---|
| 2933 | FILE *f; |
---|
| 2934 | |
---|
| 2935 | chan = Tcl_GetChannel(interp, chanID, &chanMode); |
---|
| 2936 | if (chan == (Tcl_Channel) NULL) { |
---|
| 2937 | return TCL_ERROR; |
---|
| 2938 | } |
---|
| 2939 | if ((forWriting) && ((chanMode & TCL_WRITABLE) == 0)) { |
---|
| 2940 | Tcl_AppendResult(interp, "\"", chanID, "\" wasn't opened for writing", |
---|
| 2941 | NULL); |
---|
| 2942 | return TCL_ERROR; |
---|
| 2943 | } else if ((!forWriting) && ((chanMode & TCL_READABLE) == 0)) { |
---|
| 2944 | Tcl_AppendResult(interp, "\"", chanID, "\" wasn't opened for reading", |
---|
| 2945 | NULL); |
---|
| 2946 | return TCL_ERROR; |
---|
| 2947 | } |
---|
| 2948 | |
---|
| 2949 | /* |
---|
| 2950 | * We allow creating a FILE * out of file based, pipe based and socket |
---|
| 2951 | * based channels. We currently do not allow any other channel types, |
---|
| 2952 | * because it is likely that stdio will not know what to do with them. |
---|
| 2953 | */ |
---|
| 2954 | |
---|
| 2955 | chanTypePtr = Tcl_GetChannelType(chan); |
---|
| 2956 | if ((chanTypePtr == &fileChannelType) |
---|
| 2957 | #ifdef SUPPORTS_TTY |
---|
| 2958 | || (chanTypePtr == &ttyChannelType) |
---|
| 2959 | #endif /* SUPPORTS_TTY */ |
---|
| 2960 | || (chanTypePtr == &tcpChannelType) |
---|
| 2961 | || (strcmp(chanTypePtr->typeName, "pipe") == 0)) { |
---|
| 2962 | if (Tcl_GetChannelHandle(chan, |
---|
| 2963 | (forWriting ? TCL_WRITABLE : TCL_READABLE), |
---|
| 2964 | (ClientData*) &data) == TCL_OK) { |
---|
| 2965 | fd = PTR2INT(data); |
---|
| 2966 | |
---|
| 2967 | /* |
---|
| 2968 | * The call to fdopen below is probably dangerous, since it will |
---|
| 2969 | * truncate an existing file if the file is being opened for |
---|
| 2970 | * writing.... |
---|
| 2971 | */ |
---|
| 2972 | |
---|
| 2973 | f = fdopen(fd, (forWriting ? "w" : "r")); |
---|
| 2974 | if (f == NULL) { |
---|
| 2975 | Tcl_AppendResult(interp, "cannot get a FILE * for \"", chanID, |
---|
| 2976 | "\"", NULL); |
---|
| 2977 | return TCL_ERROR; |
---|
| 2978 | } |
---|
| 2979 | *filePtr = (ClientData) f; |
---|
| 2980 | return TCL_OK; |
---|
| 2981 | } |
---|
| 2982 | } |
---|
| 2983 | |
---|
| 2984 | Tcl_AppendResult(interp, "\"", chanID, |
---|
| 2985 | "\" cannot be used to get a FILE *", NULL); |
---|
| 2986 | return TCL_ERROR; |
---|
| 2987 | } |
---|
| 2988 | |
---|
| 2989 | /* |
---|
| 2990 | *---------------------------------------------------------------------- |
---|
| 2991 | * |
---|
| 2992 | * TclUnixWaitForFile -- |
---|
| 2993 | * |
---|
| 2994 | * This function waits synchronously for a file to become readable or |
---|
| 2995 | * writable, with an optional timeout. |
---|
| 2996 | * |
---|
| 2997 | * Results: |
---|
| 2998 | * The return value is an OR'ed combination of TCL_READABLE, |
---|
| 2999 | * TCL_WRITABLE, and TCL_EXCEPTION, indicating the conditions that are |
---|
| 3000 | * present on file at the time of the return. This function will not |
---|
| 3001 | * return until either "timeout" milliseconds have elapsed or at least |
---|
| 3002 | * one of the conditions given by mask has occurred for file (a return |
---|
| 3003 | * value of 0 means that a timeout occurred). No normal events will be |
---|
| 3004 | * serviced during the execution of this function. |
---|
| 3005 | * |
---|
| 3006 | * Side effects: |
---|
| 3007 | * Time passes. |
---|
| 3008 | * |
---|
| 3009 | *---------------------------------------------------------------------- |
---|
| 3010 | */ |
---|
| 3011 | |
---|
| 3012 | int |
---|
| 3013 | TclUnixWaitForFile( |
---|
| 3014 | int fd, /* Handle for file on which to wait. */ |
---|
| 3015 | int mask, /* What to wait for: OR'ed combination of |
---|
| 3016 | * TCL_READABLE, TCL_WRITABLE, and |
---|
| 3017 | * TCL_EXCEPTION. */ |
---|
| 3018 | int timeout) /* Maximum amount of time to wait for one of |
---|
| 3019 | * the conditions in mask to occur, in |
---|
| 3020 | * milliseconds. A value of 0 means don't wait |
---|
| 3021 | * at all, and a value of -1 means wait |
---|
| 3022 | * forever. */ |
---|
| 3023 | { |
---|
| 3024 | Tcl_Time abortTime = {0, 0}, now; /* silence gcc 4 warning */ |
---|
| 3025 | struct timeval blockTime, *timeoutPtr; |
---|
| 3026 | int index, numFound, result = 0; |
---|
| 3027 | fd_mask bit; |
---|
| 3028 | fd_mask readyMasks[3*MASK_SIZE]; |
---|
| 3029 | fd_mask *maskp[3]; /* This array reflects the readable/writable |
---|
| 3030 | * conditions that were found to exist by the |
---|
| 3031 | * last call to select. */ |
---|
| 3032 | |
---|
| 3033 | /* |
---|
| 3034 | * If there is a non-zero finite timeout, compute the time when we give |
---|
| 3035 | * up. |
---|
| 3036 | */ |
---|
| 3037 | |
---|
| 3038 | if (timeout > 0) { |
---|
| 3039 | Tcl_GetTime(&now); |
---|
| 3040 | abortTime.sec = now.sec + timeout/1000; |
---|
| 3041 | abortTime.usec = now.usec + (timeout%1000)*1000; |
---|
| 3042 | if (abortTime.usec >= 1000000) { |
---|
| 3043 | abortTime.usec -= 1000000; |
---|
| 3044 | abortTime.sec += 1; |
---|
| 3045 | } |
---|
| 3046 | timeoutPtr = &blockTime; |
---|
| 3047 | } else if (timeout == 0) { |
---|
| 3048 | timeoutPtr = &blockTime; |
---|
| 3049 | blockTime.tv_sec = 0; |
---|
| 3050 | blockTime.tv_usec = 0; |
---|
| 3051 | } else { |
---|
| 3052 | timeoutPtr = NULL; |
---|
| 3053 | } |
---|
| 3054 | |
---|
| 3055 | /* |
---|
| 3056 | * Initialize the ready masks and compute the mask offsets. |
---|
| 3057 | */ |
---|
| 3058 | |
---|
| 3059 | if (fd >= FD_SETSIZE) { |
---|
| 3060 | Tcl_Panic("TclWaitForFile can't handle file id %d", fd); |
---|
| 3061 | /* must never get here, or readyMasks overrun will occur below */ |
---|
| 3062 | } |
---|
| 3063 | memset(readyMasks, 0, 3*MASK_SIZE*sizeof(fd_mask)); |
---|
| 3064 | index = fd / (NBBY*sizeof(fd_mask)); |
---|
| 3065 | bit = ((fd_mask)1) << (fd % (NBBY*sizeof(fd_mask))); |
---|
| 3066 | |
---|
| 3067 | /* |
---|
| 3068 | * Loop in a mini-event loop of our own, waiting for either the file to |
---|
| 3069 | * become ready or a timeout to occur. |
---|
| 3070 | */ |
---|
| 3071 | |
---|
| 3072 | while (1) { |
---|
| 3073 | if (timeout > 0) { |
---|
| 3074 | blockTime.tv_sec = abortTime.sec - now.sec; |
---|
| 3075 | blockTime.tv_usec = abortTime.usec - now.usec; |
---|
| 3076 | if (blockTime.tv_usec < 0) { |
---|
| 3077 | blockTime.tv_sec -= 1; |
---|
| 3078 | blockTime.tv_usec += 1000000; |
---|
| 3079 | } |
---|
| 3080 | if (blockTime.tv_sec < 0) { |
---|
| 3081 | blockTime.tv_sec = 0; |
---|
| 3082 | blockTime.tv_usec = 0; |
---|
| 3083 | } |
---|
| 3084 | } |
---|
| 3085 | |
---|
| 3086 | /* |
---|
| 3087 | * Set the appropriate bit in the ready masks for the fd. |
---|
| 3088 | */ |
---|
| 3089 | |
---|
| 3090 | if (mask & TCL_READABLE) { |
---|
| 3091 | readyMasks[index] |= bit; |
---|
| 3092 | } |
---|
| 3093 | if (mask & TCL_WRITABLE) { |
---|
| 3094 | (readyMasks+MASK_SIZE)[index] |= bit; |
---|
| 3095 | } |
---|
| 3096 | if (mask & TCL_EXCEPTION) { |
---|
| 3097 | (readyMasks+2*(MASK_SIZE))[index] |= bit; |
---|
| 3098 | } |
---|
| 3099 | |
---|
| 3100 | /* |
---|
| 3101 | * Wait for the event or a timeout. |
---|
| 3102 | */ |
---|
| 3103 | |
---|
| 3104 | /* |
---|
| 3105 | * This is needed to satisfy GCC 3.3's strict aliasing rules. |
---|
| 3106 | */ |
---|
| 3107 | |
---|
| 3108 | maskp[0] = &readyMasks[0]; |
---|
| 3109 | maskp[1] = &readyMasks[MASK_SIZE]; |
---|
| 3110 | maskp[2] = &readyMasks[2*MASK_SIZE]; |
---|
| 3111 | numFound = select(fd+1, (SELECT_MASK *) maskp[0], |
---|
| 3112 | (SELECT_MASK *) maskp[1], |
---|
| 3113 | (SELECT_MASK *) maskp[2], timeoutPtr); |
---|
| 3114 | if (numFound == 1) { |
---|
| 3115 | if (readyMasks[index] & bit) { |
---|
| 3116 | SET_BITS(result, TCL_READABLE); |
---|
| 3117 | } |
---|
| 3118 | if ((readyMasks+MASK_SIZE)[index] & bit) { |
---|
| 3119 | SET_BITS(result, TCL_WRITABLE); |
---|
| 3120 | } |
---|
| 3121 | if ((readyMasks+2*(MASK_SIZE))[index] & bit) { |
---|
| 3122 | SET_BITS(result, TCL_EXCEPTION); |
---|
| 3123 | } |
---|
| 3124 | result &= mask; |
---|
| 3125 | if (result) { |
---|
| 3126 | break; |
---|
| 3127 | } |
---|
| 3128 | } |
---|
| 3129 | if (timeout == 0) { |
---|
| 3130 | break; |
---|
| 3131 | } |
---|
| 3132 | if (timeout < 0) { |
---|
| 3133 | continue; |
---|
| 3134 | } |
---|
| 3135 | |
---|
| 3136 | /* |
---|
| 3137 | * The select returned early, so we need to recompute the timeout. |
---|
| 3138 | */ |
---|
| 3139 | |
---|
| 3140 | Tcl_GetTime(&now); |
---|
| 3141 | if ((abortTime.sec < now.sec) |
---|
| 3142 | || (abortTime.sec==now.sec && abortTime.usec<=now.usec)) { |
---|
| 3143 | break; |
---|
| 3144 | } |
---|
| 3145 | } |
---|
| 3146 | return result; |
---|
| 3147 | } |
---|
| 3148 | |
---|
| 3149 | /* |
---|
| 3150 | *---------------------------------------------------------------------- |
---|
| 3151 | * |
---|
| 3152 | * FileTruncateProc -- |
---|
| 3153 | * |
---|
| 3154 | * Truncates a file to a given length. |
---|
| 3155 | * |
---|
| 3156 | * Results: |
---|
| 3157 | * 0 if the operation succeeded, and -1 if it failed (in which case |
---|
| 3158 | * *errorCodePtr will be set to errno). |
---|
| 3159 | * |
---|
| 3160 | * Side effects: |
---|
| 3161 | * The underlying file is potentially truncated. This can have a wide |
---|
| 3162 | * variety of side effects, including moving file pointers that point at |
---|
| 3163 | * places later in the file than the truncate point. |
---|
| 3164 | * |
---|
| 3165 | *---------------------------------------------------------------------- |
---|
| 3166 | */ |
---|
| 3167 | |
---|
| 3168 | static int |
---|
| 3169 | FileTruncateProc( |
---|
| 3170 | ClientData instanceData, |
---|
| 3171 | Tcl_WideInt length) |
---|
| 3172 | { |
---|
| 3173 | FileState *fsPtr = (FileState *) instanceData; |
---|
| 3174 | int result; |
---|
| 3175 | |
---|
| 3176 | #ifdef HAVE_TYPE_OFF64_T |
---|
| 3177 | /* |
---|
| 3178 | * We assume this goes with the type for now... |
---|
| 3179 | */ |
---|
| 3180 | |
---|
| 3181 | result = ftruncate64(fsPtr->fd, (off64_t) length); |
---|
| 3182 | #else |
---|
| 3183 | result = ftruncate(fsPtr->fd, (off_t) length); |
---|
| 3184 | #endif |
---|
| 3185 | if (result) { |
---|
| 3186 | return errno; |
---|
| 3187 | } |
---|
| 3188 | return 0; |
---|
| 3189 | } |
---|
| 3190 | |
---|
| 3191 | /* |
---|
| 3192 | * Local Variables: |
---|
| 3193 | * mode: c |
---|
| 3194 | * c-basic-offset: 4 |
---|
| 3195 | * fill-column: 78 |
---|
| 3196 | * End: |
---|
| 3197 | */ |
---|