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 | */ |
---|