1 |
/* $Header$ */
|
2 |
/*
|
3 |
* tclIOCmd.c --
|
4 |
*
|
5 |
* Contains the definitions of most of the Tcl commands relating to IO.
|
6 |
*
|
7 |
* Copyright (c) 1995-1997 Sun Microsystems, Inc.
|
8 |
*
|
9 |
* See the file "license.terms" for information on usage and redistribution
|
10 |
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
11 |
*
|
12 |
* RCS: @(#) $Id: tcliocmd.c,v 1.1.1.1 2001/06/13 04:42:14 dtashley Exp $
|
13 |
*/
|
14 |
|
15 |
#include "tclInt.h"
|
16 |
#include "tclPort.h"
|
17 |
|
18 |
/*
|
19 |
* Callback structure for accept callback in a TCP server.
|
20 |
*/
|
21 |
|
22 |
typedef struct AcceptCallback {
|
23 |
char *script; /* Script to invoke. */
|
24 |
Tcl_Interp *interp; /* Interpreter in which to run it. */
|
25 |
} AcceptCallback;
|
26 |
|
27 |
/*
|
28 |
* Static functions for this file:
|
29 |
*/
|
30 |
|
31 |
static void AcceptCallbackProc _ANSI_ARGS_((ClientData callbackData,
|
32 |
Tcl_Channel chan, char *address, int port));
|
33 |
static void RegisterTcpServerInterpCleanup _ANSI_ARGS_((Tcl_Interp *interp,
|
34 |
AcceptCallback *acceptCallbackPtr));
|
35 |
static void TcpAcceptCallbacksDeleteProc _ANSI_ARGS_((
|
36 |
ClientData clientData, Tcl_Interp *interp));
|
37 |
static void TcpServerCloseProc _ANSI_ARGS_((ClientData callbackData));
|
38 |
static void UnregisterTcpServerInterpCleanupProc _ANSI_ARGS_((
|
39 |
Tcl_Interp *interp, AcceptCallback *acceptCallbackPtr));
|
40 |
|
41 |
/*
|
42 |
*----------------------------------------------------------------------
|
43 |
*
|
44 |
* Tcl_PutsObjCmd --
|
45 |
*
|
46 |
* This procedure is invoked to process the "puts" Tcl command.
|
47 |
* See the user documentation for details on what it does.
|
48 |
*
|
49 |
* Results:
|
50 |
* A standard Tcl result.
|
51 |
*
|
52 |
* Side effects:
|
53 |
* Produces output on a channel.
|
54 |
*
|
55 |
*----------------------------------------------------------------------
|
56 |
*/
|
57 |
|
58 |
/* ARGSUSED */
|
59 |
int
|
60 |
Tcl_PutsObjCmd(dummy, interp, objc, objv)
|
61 |
ClientData dummy; /* Not used. */
|
62 |
Tcl_Interp *interp; /* Current interpreter. */
|
63 |
int objc; /* Number of arguments. */
|
64 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
65 |
{
|
66 |
Tcl_Channel chan; /* The channel to puts on. */
|
67 |
int i; /* Counter. */
|
68 |
int newline; /* Add a newline at end? */
|
69 |
char *channelId; /* Name of channel for puts. */
|
70 |
int result; /* Result of puts operation. */
|
71 |
int mode; /* Mode in which channel is opened. */
|
72 |
char *arg;
|
73 |
int length;
|
74 |
|
75 |
i = 1;
|
76 |
newline = 1;
|
77 |
if ((objc >= 2) && (strcmp(Tcl_GetString(objv[1]), "-nonewline") == 0)) {
|
78 |
newline = 0;
|
79 |
i++;
|
80 |
}
|
81 |
if ((i < (objc-3)) || (i >= objc)) {
|
82 |
Tcl_WrongNumArgs(interp, 1, objv, "?-nonewline? ?channelId? string");
|
83 |
return TCL_ERROR;
|
84 |
}
|
85 |
|
86 |
/*
|
87 |
* The code below provides backwards compatibility with an old
|
88 |
* form of the command that is no longer recommended or documented.
|
89 |
*/
|
90 |
|
91 |
if (i == (objc-3)) {
|
92 |
arg = Tcl_GetStringFromObj(objv[i + 2], &length);
|
93 |
if (strncmp(arg, "nonewline", (size_t) length) != 0) {
|
94 |
Tcl_AppendResult(interp, "bad argument \"", arg,
|
95 |
"\": should be \"nonewline\"", (char *) NULL);
|
96 |
return TCL_ERROR;
|
97 |
}
|
98 |
newline = 0;
|
99 |
}
|
100 |
if (i == (objc - 1)) {
|
101 |
channelId = "stdout";
|
102 |
} else {
|
103 |
channelId = Tcl_GetString(objv[i]);
|
104 |
i++;
|
105 |
}
|
106 |
chan = Tcl_GetChannel(interp, channelId, &mode);
|
107 |
if (chan == (Tcl_Channel) NULL) {
|
108 |
return TCL_ERROR;
|
109 |
}
|
110 |
if ((mode & TCL_WRITABLE) == 0) {
|
111 |
Tcl_AppendResult(interp, "channel \"", channelId,
|
112 |
"\" wasn't opened for writing", (char *) NULL);
|
113 |
return TCL_ERROR;
|
114 |
}
|
115 |
|
116 |
result = Tcl_WriteObj(chan, objv[i]);
|
117 |
if (result < 0) {
|
118 |
goto error;
|
119 |
}
|
120 |
if (newline != 0) {
|
121 |
result = Tcl_WriteChars(chan, "\n", 1);
|
122 |
if (result < 0) {
|
123 |
goto error;
|
124 |
}
|
125 |
}
|
126 |
return TCL_OK;
|
127 |
|
128 |
error:
|
129 |
Tcl_AppendResult(interp, "error writing \"", channelId, "\": ",
|
130 |
Tcl_PosixError(interp), (char *) NULL);
|
131 |
return TCL_ERROR;
|
132 |
}
|
133 |
|
134 |
/*
|
135 |
*----------------------------------------------------------------------
|
136 |
*
|
137 |
* Tcl_FlushObjCmd --
|
138 |
*
|
139 |
* This procedure is called to process the Tcl "flush" command.
|
140 |
* See the user documentation for details on what it does.
|
141 |
*
|
142 |
* Results:
|
143 |
* A standard Tcl result.
|
144 |
*
|
145 |
* Side effects:
|
146 |
* May cause output to appear on the specified channel.
|
147 |
*
|
148 |
*----------------------------------------------------------------------
|
149 |
*/
|
150 |
|
151 |
/* ARGSUSED */
|
152 |
int
|
153 |
Tcl_FlushObjCmd(dummy, interp, objc, objv)
|
154 |
ClientData dummy; /* Not used. */
|
155 |
Tcl_Interp *interp; /* Current interpreter. */
|
156 |
int objc; /* Number of arguments. */
|
157 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
158 |
{
|
159 |
Tcl_Channel chan; /* The channel to flush on. */
|
160 |
char *channelId;
|
161 |
int mode;
|
162 |
|
163 |
if (objc != 2) {
|
164 |
Tcl_WrongNumArgs(interp, 1, objv, "channelId");
|
165 |
return TCL_ERROR;
|
166 |
}
|
167 |
channelId = Tcl_GetString(objv[1]);
|
168 |
chan = Tcl_GetChannel(interp, channelId, &mode);
|
169 |
if (chan == (Tcl_Channel) NULL) {
|
170 |
return TCL_ERROR;
|
171 |
}
|
172 |
if ((mode & TCL_WRITABLE) == 0) {
|
173 |
Tcl_AppendResult(interp, "channel \"", channelId,
|
174 |
"\" wasn't opened for writing", (char *) NULL);
|
175 |
return TCL_ERROR;
|
176 |
}
|
177 |
|
178 |
if (Tcl_Flush(chan) != TCL_OK) {
|
179 |
Tcl_AppendResult(interp, "error flushing \"", channelId, "\": ",
|
180 |
Tcl_PosixError(interp), (char *) NULL);
|
181 |
return TCL_ERROR;
|
182 |
}
|
183 |
return TCL_OK;
|
184 |
}
|
185 |
|
186 |
/*
|
187 |
*----------------------------------------------------------------------
|
188 |
*
|
189 |
* Tcl_GetsObjCmd --
|
190 |
*
|
191 |
* This procedure is called to process the Tcl "gets" command.
|
192 |
* See the user documentation for details on what it does.
|
193 |
*
|
194 |
* Results:
|
195 |
* A standard Tcl result.
|
196 |
*
|
197 |
* Side effects:
|
198 |
* May consume input from channel.
|
199 |
*
|
200 |
*----------------------------------------------------------------------
|
201 |
*/
|
202 |
|
203 |
/* ARGSUSED */
|
204 |
int
|
205 |
Tcl_GetsObjCmd(dummy, interp, objc, objv)
|
206 |
ClientData dummy; /* Not used. */
|
207 |
Tcl_Interp *interp; /* Current interpreter. */
|
208 |
int objc; /* Number of arguments. */
|
209 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
210 |
{
|
211 |
Tcl_Channel chan; /* The channel to read from. */
|
212 |
int lineLen; /* Length of line just read. */
|
213 |
int mode; /* Mode in which channel is opened. */
|
214 |
char *name;
|
215 |
Tcl_Obj *resultPtr, *linePtr;
|
216 |
|
217 |
if ((objc != 2) && (objc != 3)) {
|
218 |
Tcl_WrongNumArgs(interp, 1, objv, "channelId ?varName?");
|
219 |
return TCL_ERROR;
|
220 |
}
|
221 |
name = Tcl_GetString(objv[1]);
|
222 |
chan = Tcl_GetChannel(interp, name, &mode);
|
223 |
if (chan == (Tcl_Channel) NULL) {
|
224 |
return TCL_ERROR;
|
225 |
}
|
226 |
if ((mode & TCL_READABLE) == 0) {
|
227 |
Tcl_AppendResult(interp, "channel \"", name,
|
228 |
"\" wasn't opened for reading", (char *) NULL);
|
229 |
return TCL_ERROR;
|
230 |
}
|
231 |
|
232 |
resultPtr = Tcl_GetObjResult(interp);
|
233 |
linePtr = resultPtr;
|
234 |
if (objc == 3) {
|
235 |
/*
|
236 |
* Variable gets line, interp get bytecount.
|
237 |
*/
|
238 |
|
239 |
linePtr = Tcl_NewObj();
|
240 |
}
|
241 |
|
242 |
lineLen = Tcl_GetsObj(chan, linePtr);
|
243 |
if (lineLen < 0) {
|
244 |
if (!Tcl_Eof(chan) && !Tcl_InputBlocked(chan)) {
|
245 |
if (linePtr != resultPtr) {
|
246 |
Tcl_DecrRefCount(linePtr);
|
247 |
}
|
248 |
Tcl_ResetResult(interp);
|
249 |
Tcl_AppendResult(interp, "error reading \"", name, "\": ",
|
250 |
Tcl_PosixError(interp), (char *) NULL);
|
251 |
return TCL_ERROR;
|
252 |
}
|
253 |
lineLen = -1;
|
254 |
}
|
255 |
if (objc == 3) {
|
256 |
if (Tcl_ObjSetVar2(interp, objv[2], NULL, linePtr,
|
257 |
TCL_LEAVE_ERR_MSG) == NULL) {
|
258 |
Tcl_DecrRefCount(linePtr);
|
259 |
return TCL_ERROR;
|
260 |
}
|
261 |
Tcl_SetIntObj(resultPtr, lineLen);
|
262 |
return TCL_OK;
|
263 |
}
|
264 |
return TCL_OK;
|
265 |
}
|
266 |
|
267 |
/*
|
268 |
*----------------------------------------------------------------------
|
269 |
*
|
270 |
* Tcl_ReadObjCmd --
|
271 |
*
|
272 |
* This procedure is invoked to process the Tcl "read" command.
|
273 |
* See the user documentation for details on what it does.
|
274 |
*
|
275 |
* Results:
|
276 |
* A standard Tcl result.
|
277 |
*
|
278 |
* Side effects:
|
279 |
* May consume input from channel.
|
280 |
*
|
281 |
*----------------------------------------------------------------------
|
282 |
*/
|
283 |
|
284 |
/* ARGSUSED */
|
285 |
int
|
286 |
Tcl_ReadObjCmd(dummy, interp, objc, objv)
|
287 |
ClientData dummy; /* Not used. */
|
288 |
Tcl_Interp *interp; /* Current interpreter. */
|
289 |
int objc; /* Number of arguments. */
|
290 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
291 |
{
|
292 |
Tcl_Channel chan; /* The channel to read from. */
|
293 |
int newline, i; /* Discard newline at end? */
|
294 |
int toRead; /* How many bytes to read? */
|
295 |
int charactersRead; /* How many characters were read? */
|
296 |
int mode; /* Mode in which channel is opened. */
|
297 |
char *name;
|
298 |
Tcl_Obj *resultPtr;
|
299 |
|
300 |
if ((objc != 2) && (objc != 3)) {
|
301 |
argerror:
|
302 |
Tcl_WrongNumArgs(interp, 1, objv, "channelId ?numChars?");
|
303 |
Tcl_AppendResult(interp, " or \"", Tcl_GetString(objv[0]),
|
304 |
" ?-nonewline? channelId\"", (char *) NULL);
|
305 |
return TCL_ERROR;
|
306 |
}
|
307 |
|
308 |
i = 1;
|
309 |
newline = 0;
|
310 |
if (strcmp(Tcl_GetString(objv[1]), "-nonewline") == 0) {
|
311 |
newline = 1;
|
312 |
i++;
|
313 |
}
|
314 |
|
315 |
if (i == objc) {
|
316 |
goto argerror;
|
317 |
}
|
318 |
|
319 |
name = Tcl_GetString(objv[i]);
|
320 |
chan = Tcl_GetChannel(interp, name, &mode);
|
321 |
if (chan == (Tcl_Channel) NULL) {
|
322 |
return TCL_ERROR;
|
323 |
}
|
324 |
if ((mode & TCL_READABLE) == 0) {
|
325 |
Tcl_AppendResult(interp, "channel \"", name,
|
326 |
"\" wasn't opened for reading", (char *) NULL);
|
327 |
return TCL_ERROR;
|
328 |
}
|
329 |
i++; /* Consumed channel name. */
|
330 |
|
331 |
/*
|
332 |
* Compute how many bytes to read, and see whether the final
|
333 |
* newline should be dropped.
|
334 |
*/
|
335 |
|
336 |
toRead = -1;
|
337 |
if (i < objc) {
|
338 |
char *arg;
|
339 |
|
340 |
arg = Tcl_GetString(objv[i]);
|
341 |
if (isdigit(UCHAR(arg[0]))) { /* INTL: digit */
|
342 |
if (Tcl_GetIntFromObj(interp, objv[i], &toRead) != TCL_OK) {
|
343 |
return TCL_ERROR;
|
344 |
}
|
345 |
} else if (strcmp(arg, "nonewline") == 0) {
|
346 |
newline = 1;
|
347 |
} else {
|
348 |
Tcl_AppendResult(interp, "bad argument \"", arg,
|
349 |
"\": should be \"nonewline\"", (char *) NULL);
|
350 |
return TCL_ERROR;
|
351 |
}
|
352 |
}
|
353 |
|
354 |
resultPtr = Tcl_NewObj();
|
355 |
Tcl_IncrRefCount(resultPtr);
|
356 |
charactersRead = Tcl_ReadChars(chan, resultPtr, toRead, 0);
|
357 |
if (charactersRead < 0) {
|
358 |
Tcl_ResetResult(interp);
|
359 |
Tcl_AppendResult(interp, "error reading \"", name, "\": ",
|
360 |
Tcl_PosixError(interp), (char *) NULL);
|
361 |
Tcl_DecrRefCount(resultPtr);
|
362 |
return TCL_ERROR;
|
363 |
}
|
364 |
|
365 |
/*
|
366 |
* If requested, remove the last newline in the channel if at EOF.
|
367 |
*/
|
368 |
|
369 |
if ((charactersRead > 0) && (newline != 0)) {
|
370 |
char *result;
|
371 |
int length;
|
372 |
|
373 |
result = Tcl_GetStringFromObj(resultPtr, &length);
|
374 |
if (result[length - 1] == '\n') {
|
375 |
Tcl_SetObjLength(resultPtr, length - 1);
|
376 |
}
|
377 |
}
|
378 |
Tcl_SetObjResult(interp, resultPtr);
|
379 |
Tcl_DecrRefCount(resultPtr);
|
380 |
return TCL_OK;
|
381 |
}
|
382 |
|
383 |
/*
|
384 |
*----------------------------------------------------------------------
|
385 |
*
|
386 |
* Tcl_SeekObjCmd --
|
387 |
*
|
388 |
* This procedure is invoked to process the Tcl "seek" command. See
|
389 |
* the user documentation for details on what it does.
|
390 |
*
|
391 |
* Results:
|
392 |
* A standard Tcl result.
|
393 |
*
|
394 |
* Side effects:
|
395 |
* Moves the position of the access point on the specified channel.
|
396 |
* May flush queued output.
|
397 |
*
|
398 |
*----------------------------------------------------------------------
|
399 |
*/
|
400 |
|
401 |
/* ARGSUSED */
|
402 |
int
|
403 |
Tcl_SeekObjCmd(clientData, interp, objc, objv)
|
404 |
ClientData clientData; /* Not used. */
|
405 |
Tcl_Interp *interp; /* Current interpreter. */
|
406 |
int objc; /* Number of arguments. */
|
407 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
408 |
{
|
409 |
Tcl_Channel chan; /* The channel to tell on. */
|
410 |
int offset, mode; /* Where to seek? */
|
411 |
int result; /* Of calling Tcl_Seek. */
|
412 |
char *chanName;
|
413 |
int optionIndex;
|
414 |
static char *originOptions[] = {"start", "current", "end", (char *) NULL};
|
415 |
static int modeArray[] = {SEEK_SET, SEEK_CUR, SEEK_END};
|
416 |
|
417 |
if ((objc != 3) && (objc != 4)) {
|
418 |
Tcl_WrongNumArgs(interp, 1, objv, "channelId offset ?origin?");
|
419 |
return TCL_ERROR;
|
420 |
}
|
421 |
chanName = Tcl_GetString(objv[1]);
|
422 |
chan = Tcl_GetChannel(interp, chanName, NULL);
|
423 |
if (chan == (Tcl_Channel) NULL) {
|
424 |
return TCL_ERROR;
|
425 |
}
|
426 |
if (Tcl_GetIntFromObj(interp, objv[2], &offset) != TCL_OK) {
|
427 |
return TCL_ERROR;
|
428 |
}
|
429 |
mode = SEEK_SET;
|
430 |
if (objc == 4) {
|
431 |
if (Tcl_GetIndexFromObj(interp, objv[3], originOptions, "origin", 0,
|
432 |
&optionIndex) != TCL_OK) {
|
433 |
return TCL_ERROR;
|
434 |
}
|
435 |
mode = modeArray[optionIndex];
|
436 |
}
|
437 |
|
438 |
result = Tcl_Seek(chan, offset, mode);
|
439 |
if (result == -1) {
|
440 |
Tcl_AppendResult(interp, "error during seek on \"",
|
441 |
chanName, "\": ", Tcl_PosixError(interp), (char *) NULL);
|
442 |
return TCL_ERROR;
|
443 |
}
|
444 |
return TCL_OK;
|
445 |
}
|
446 |
|
447 |
/*
|
448 |
*----------------------------------------------------------------------
|
449 |
*
|
450 |
* Tcl_TellObjCmd --
|
451 |
*
|
452 |
* This procedure is invoked to process the Tcl "tell" command.
|
453 |
* See the user documentation for details on what it does.
|
454 |
*
|
455 |
* Results:
|
456 |
* A standard Tcl result.
|
457 |
*
|
458 |
* Side effects:
|
459 |
* None.
|
460 |
*
|
461 |
*----------------------------------------------------------------------
|
462 |
*/
|
463 |
|
464 |
/* ARGSUSED */
|
465 |
int
|
466 |
Tcl_TellObjCmd(clientData, interp, objc, objv)
|
467 |
ClientData clientData; /* Not used. */
|
468 |
Tcl_Interp *interp; /* Current interpreter. */
|
469 |
int objc; /* Number of arguments. */
|
470 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
471 |
{
|
472 |
Tcl_Channel chan; /* The channel to tell on. */
|
473 |
char *chanName;
|
474 |
|
475 |
if (objc != 2) {
|
476 |
Tcl_WrongNumArgs(interp, 1, objv, "channelId");
|
477 |
return TCL_ERROR;
|
478 |
}
|
479 |
/*
|
480 |
* Try to find a channel with the right name and permissions in
|
481 |
* the IO channel table of this interpreter.
|
482 |
*/
|
483 |
|
484 |
chanName = Tcl_GetString(objv[1]);
|
485 |
chan = Tcl_GetChannel(interp, chanName, NULL);
|
486 |
if (chan == (Tcl_Channel) NULL) {
|
487 |
return TCL_ERROR;
|
488 |
}
|
489 |
Tcl_SetIntObj(Tcl_GetObjResult(interp), Tcl_Tell(chan));
|
490 |
return TCL_OK;
|
491 |
}
|
492 |
|
493 |
/*
|
494 |
*----------------------------------------------------------------------
|
495 |
*
|
496 |
* Tcl_CloseObjCmd --
|
497 |
*
|
498 |
* This procedure is invoked to process the Tcl "close" command.
|
499 |
* See the user documentation for details on what it does.
|
500 |
*
|
501 |
* Results:
|
502 |
* A standard Tcl result.
|
503 |
*
|
504 |
* Side effects:
|
505 |
* May discard queued input; may flush queued output.
|
506 |
*
|
507 |
*----------------------------------------------------------------------
|
508 |
*/
|
509 |
|
510 |
/* ARGSUSED */
|
511 |
int
|
512 |
Tcl_CloseObjCmd(clientData, interp, objc, objv)
|
513 |
ClientData clientData; /* Not used. */
|
514 |
Tcl_Interp *interp; /* Current interpreter. */
|
515 |
int objc; /* Number of arguments. */
|
516 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
517 |
{
|
518 |
Tcl_Channel chan; /* The channel to close. */
|
519 |
char *arg;
|
520 |
|
521 |
if (objc != 2) {
|
522 |
Tcl_WrongNumArgs(interp, 1, objv, "channelId");
|
523 |
return TCL_ERROR;
|
524 |
}
|
525 |
|
526 |
arg = Tcl_GetString(objv[1]);
|
527 |
chan = Tcl_GetChannel(interp, arg, NULL);
|
528 |
if (chan == (Tcl_Channel) NULL) {
|
529 |
return TCL_ERROR;
|
530 |
}
|
531 |
|
532 |
if (Tcl_UnregisterChannel(interp, chan) != TCL_OK) {
|
533 |
/*
|
534 |
* If there is an error message and it ends with a newline, remove
|
535 |
* the newline. This is done for command pipeline channels where the
|
536 |
* error output from the subprocesses is stored in interp's result.
|
537 |
*
|
538 |
* NOTE: This is likely to not have any effect on regular error
|
539 |
* messages produced by drivers during the closing of a channel,
|
540 |
* because the Tcl convention is that such error messages do not
|
541 |
* have a terminating newline.
|
542 |
*/
|
543 |
|
544 |
Tcl_Obj *resultPtr;
|
545 |
char *string;
|
546 |
int len;
|
547 |
|
548 |
resultPtr = Tcl_GetObjResult(interp);
|
549 |
string = Tcl_GetStringFromObj(resultPtr, &len);
|
550 |
if ((len > 0) && (string[len - 1] == '\n')) {
|
551 |
Tcl_SetObjLength(resultPtr, len - 1);
|
552 |
}
|
553 |
return TCL_ERROR;
|
554 |
}
|
555 |
|
556 |
return TCL_OK;
|
557 |
}
|
558 |
|
559 |
/*
|
560 |
*----------------------------------------------------------------------
|
561 |
*
|
562 |
* Tcl_FconfigureObjCmd --
|
563 |
*
|
564 |
* This procedure is invoked to process the Tcl "fconfigure" command.
|
565 |
* See the user documentation for details on what it does.
|
566 |
*
|
567 |
* Results:
|
568 |
* A standard Tcl result.
|
569 |
*
|
570 |
* Side effects:
|
571 |
* May modify the behavior of an IO channel.
|
572 |
*
|
573 |
*----------------------------------------------------------------------
|
574 |
*/
|
575 |
|
576 |
/* ARGSUSED */
|
577 |
int
|
578 |
Tcl_FconfigureObjCmd(clientData, interp, objc, objv)
|
579 |
ClientData clientData; /* Not used. */
|
580 |
Tcl_Interp *interp; /* Current interpreter. */
|
581 |
int objc; /* Number of arguments. */
|
582 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
583 |
{
|
584 |
char *chanName, *optionName, *valueName;
|
585 |
Tcl_Channel chan; /* The channel to set a mode on. */
|
586 |
int i; /* Iterate over arg-value pairs. */
|
587 |
Tcl_DString ds; /* DString to hold result of
|
588 |
* calling Tcl_GetChannelOption. */
|
589 |
|
590 |
if ((objc < 2) || (((objc % 2) == 1) && (objc != 3))) {
|
591 |
Tcl_WrongNumArgs(interp, 1, objv,
|
592 |
"channelId ?optionName? ?value? ?optionName value?...");
|
593 |
return TCL_ERROR;
|
594 |
}
|
595 |
chanName = Tcl_GetString(objv[1]);
|
596 |
chan = Tcl_GetChannel(interp, chanName, NULL);
|
597 |
if (chan == (Tcl_Channel) NULL) {
|
598 |
return TCL_ERROR;
|
599 |
}
|
600 |
if (objc == 2) {
|
601 |
Tcl_DStringInit(&ds);
|
602 |
if (Tcl_GetChannelOption(interp, chan, (char *) NULL, &ds) != TCL_OK) {
|
603 |
Tcl_DStringFree(&ds);
|
604 |
return TCL_ERROR;
|
605 |
}
|
606 |
Tcl_DStringResult(interp, &ds);
|
607 |
return TCL_OK;
|
608 |
}
|
609 |
if (objc == 3) {
|
610 |
Tcl_DStringInit(&ds);
|
611 |
optionName = Tcl_GetString(objv[2]);
|
612 |
if (Tcl_GetChannelOption(interp, chan, optionName, &ds) != TCL_OK) {
|
613 |
Tcl_DStringFree(&ds);
|
614 |
return TCL_ERROR;
|
615 |
}
|
616 |
Tcl_DStringResult(interp, &ds);
|
617 |
return TCL_OK;
|
618 |
}
|
619 |
for (i = 3; i < objc; i += 2) {
|
620 |
optionName = Tcl_GetString(objv[i-1]);
|
621 |
valueName = Tcl_GetString(objv[i]);
|
622 |
if (Tcl_SetChannelOption(interp, chan, optionName, valueName)
|
623 |
!= TCL_OK) {
|
624 |
return TCL_ERROR;
|
625 |
}
|
626 |
}
|
627 |
return TCL_OK;
|
628 |
}
|
629 |
|
630 |
/*
|
631 |
*---------------------------------------------------------------------------
|
632 |
*
|
633 |
* Tcl_EofObjCmd --
|
634 |
*
|
635 |
* This procedure is invoked to process the Tcl "eof" command.
|
636 |
* See the user documentation for details on what it does.
|
637 |
*
|
638 |
* Results:
|
639 |
* A standard Tcl result.
|
640 |
*
|
641 |
* Side effects:
|
642 |
* Sets interp's result to boolean true or false depending on whether
|
643 |
* the specified channel has an EOF condition.
|
644 |
*
|
645 |
*---------------------------------------------------------------------------
|
646 |
*/
|
647 |
|
648 |
/* ARGSUSED */
|
649 |
int
|
650 |
Tcl_EofObjCmd(unused, interp, objc, objv)
|
651 |
ClientData unused; /* Not used. */
|
652 |
Tcl_Interp *interp; /* Current interpreter. */
|
653 |
int objc; /* Number of arguments. */
|
654 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
655 |
{
|
656 |
Tcl_Channel chan;
|
657 |
int dummy;
|
658 |
char *arg;
|
659 |
|
660 |
if (objc != 2) {
|
661 |
Tcl_WrongNumArgs(interp, 1, objv, "channelId");
|
662 |
return TCL_ERROR;
|
663 |
}
|
664 |
|
665 |
arg = Tcl_GetString(objv[1]);
|
666 |
chan = Tcl_GetChannel(interp, arg, &dummy);
|
667 |
if (chan == NULL) {
|
668 |
return TCL_ERROR;
|
669 |
}
|
670 |
|
671 |
Tcl_SetBooleanObj(Tcl_GetObjResult(interp), Tcl_Eof(chan));
|
672 |
return TCL_OK;
|
673 |
}
|
674 |
|
675 |
/*
|
676 |
*----------------------------------------------------------------------
|
677 |
*
|
678 |
* Tcl_ExecObjCmd --
|
679 |
*
|
680 |
* This procedure is invoked to process the "exec" Tcl command.
|
681 |
* See the user documentation for details on what it does.
|
682 |
*
|
683 |
* Results:
|
684 |
* A standard Tcl result.
|
685 |
*
|
686 |
* Side effects:
|
687 |
* See the user documentation.
|
688 |
*
|
689 |
*----------------------------------------------------------------------
|
690 |
*/
|
691 |
|
692 |
/* ARGSUSED */
|
693 |
int
|
694 |
Tcl_ExecObjCmd(dummy, interp, objc, objv)
|
695 |
ClientData dummy; /* Not used. */
|
696 |
Tcl_Interp *interp; /* Current interpreter. */
|
697 |
int objc; /* Number of arguments. */
|
698 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
699 |
{
|
700 |
#ifdef MAC_TCL
|
701 |
|
702 |
Tcl_AppendResult(interp, "exec not implemented under Mac OS",
|
703 |
(char *)NULL);
|
704 |
return TCL_ERROR;
|
705 |
|
706 |
#else /* !MAC_TCL */
|
707 |
|
708 |
/*
|
709 |
* This procedure generates an argv array for the string arguments. It
|
710 |
* starts out with stack-allocated space but uses dynamically-allocated
|
711 |
* storage if needed.
|
712 |
*/
|
713 |
|
714 |
#define NUM_ARGS 20
|
715 |
Tcl_Obj *resultPtr;
|
716 |
char **argv;
|
717 |
char *string;
|
718 |
Tcl_Channel chan;
|
719 |
char *argStorage[NUM_ARGS];
|
720 |
int argc, background, i, index, keepNewline, result, skip, length;
|
721 |
static char *options[] = {
|
722 |
"-keepnewline", "--", NULL
|
723 |
};
|
724 |
enum options {
|
725 |
EXEC_KEEPNEWLINE, EXEC_LAST
|
726 |
};
|
727 |
|
728 |
/*
|
729 |
* Check for a leading "-keepnewline" argument.
|
730 |
*/
|
731 |
|
732 |
keepNewline = 0;
|
733 |
for (skip = 1; skip < objc; skip++) {
|
734 |
string = Tcl_GetString(objv[skip]);
|
735 |
if (string[0] != '-') {
|
736 |
break;
|
737 |
}
|
738 |
if (Tcl_GetIndexFromObj(interp, objv[skip], options, "switch",
|
739 |
TCL_EXACT, &index) != TCL_OK) {
|
740 |
return TCL_ERROR;
|
741 |
}
|
742 |
if (index == EXEC_KEEPNEWLINE) {
|
743 |
keepNewline = 1;
|
744 |
} else {
|
745 |
skip++;
|
746 |
break;
|
747 |
}
|
748 |
}
|
749 |
if (objc <= skip) {
|
750 |
Tcl_WrongNumArgs(interp, 1, objv, "?switches? arg ?arg ...?");
|
751 |
return TCL_ERROR;
|
752 |
}
|
753 |
|
754 |
/*
|
755 |
* See if the command is to be run in background.
|
756 |
*/
|
757 |
|
758 |
background = 0;
|
759 |
string = Tcl_GetString(objv[objc - 1]);
|
760 |
if ((string[0] == '&') && (string[1] == '\0')) {
|
761 |
objc--;
|
762 |
background = 1;
|
763 |
}
|
764 |
|
765 |
/*
|
766 |
* Create the string argument array "argv". Make sure argv is large
|
767 |
* enough to hold the argc arguments plus 1 extra for the zero
|
768 |
* end-of-argv word.
|
769 |
*/
|
770 |
|
771 |
argv = argStorage;
|
772 |
argc = objc - skip;
|
773 |
if ((argc + 1) > sizeof(argv) / sizeof(argv[0])) {
|
774 |
argv = (char **) ckalloc((unsigned)(argc + 1) * sizeof(char *));
|
775 |
}
|
776 |
|
777 |
/*
|
778 |
* Copy the string conversions of each (post option) object into the
|
779 |
* argument vector.
|
780 |
*/
|
781 |
|
782 |
for (i = 0; i < argc; i++) {
|
783 |
argv[i] = Tcl_GetString(objv[i + skip]);
|
784 |
}
|
785 |
argv[argc] = NULL;
|
786 |
chan = Tcl_OpenCommandChannel(interp, argc, argv,
|
787 |
(background ? 0 : TCL_STDOUT | TCL_STDERR));
|
788 |
|
789 |
/*
|
790 |
* Free the argv array if malloc'ed storage was used.
|
791 |
*/
|
792 |
|
793 |
if (argv != argStorage) {
|
794 |
ckfree((char *)argv);
|
795 |
}
|
796 |
|
797 |
if (chan == (Tcl_Channel) NULL) {
|
798 |
return TCL_ERROR;
|
799 |
}
|
800 |
|
801 |
if (background) {
|
802 |
/*
|
803 |
* Store the list of PIDs from the pipeline in interp's result and
|
804 |
* detach the PIDs (instead of waiting for them).
|
805 |
*/
|
806 |
|
807 |
TclGetAndDetachPids(interp, chan);
|
808 |
if (Tcl_Close(interp, chan) != TCL_OK) {
|
809 |
return TCL_ERROR;
|
810 |
}
|
811 |
return TCL_OK;
|
812 |
}
|
813 |
|
814 |
resultPtr = Tcl_NewObj();
|
815 |
if (Tcl_GetChannelHandle(chan, TCL_READABLE, NULL) == TCL_OK) {
|
816 |
if (Tcl_ReadChars(chan, resultPtr, -1, 0) < 0) {
|
817 |
Tcl_ResetResult(interp);
|
818 |
Tcl_AppendResult(interp, "error reading output from command: ",
|
819 |
Tcl_PosixError(interp), (char *) NULL);
|
820 |
Tcl_DecrRefCount(resultPtr);
|
821 |
return TCL_ERROR;
|
822 |
}
|
823 |
}
|
824 |
/*
|
825 |
* If the process produced anything on stderr, it will have been
|
826 |
* returned in the interpreter result. It needs to be appended to
|
827 |
* the result string.
|
828 |
*/
|
829 |
|
830 |
result = Tcl_Close(interp, chan);
|
831 |
string = Tcl_GetStringFromObj(Tcl_GetObjResult(interp), &length);
|
832 |
Tcl_AppendToObj(resultPtr, string, length);
|
833 |
|
834 |
/*
|
835 |
* If the last character of the result is a newline, then remove
|
836 |
* the newline character.
|
837 |
*/
|
838 |
|
839 |
if (keepNewline == 0) {
|
840 |
string = Tcl_GetStringFromObj(resultPtr, &length);
|
841 |
if ((length > 0) && (string[length - 1] == '\n')) {
|
842 |
Tcl_SetObjLength(resultPtr, length - 1);
|
843 |
}
|
844 |
}
|
845 |
Tcl_SetObjResult(interp, resultPtr);
|
846 |
|
847 |
return result;
|
848 |
#endif /* !MAC_TCL */
|
849 |
}
|
850 |
|
851 |
/*
|
852 |
*---------------------------------------------------------------------------
|
853 |
*
|
854 |
* Tcl_FblockedObjCmd --
|
855 |
*
|
856 |
* This procedure is invoked to process the Tcl "fblocked" command.
|
857 |
* See the user documentation for details on what it does.
|
858 |
*
|
859 |
* Results:
|
860 |
* A standard Tcl result.
|
861 |
*
|
862 |
* Side effects:
|
863 |
* Sets interp's result to boolean true or false depending on whether
|
864 |
* the preceeding input operation on the channel would have blocked.
|
865 |
*
|
866 |
*---------------------------------------------------------------------------
|
867 |
*/
|
868 |
|
869 |
/* ARGSUSED */
|
870 |
int
|
871 |
Tcl_FblockedObjCmd(unused, interp, objc, objv)
|
872 |
ClientData unused; /* Not used. */
|
873 |
Tcl_Interp *interp; /* Current interpreter. */
|
874 |
int objc; /* Number of arguments. */
|
875 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
876 |
{
|
877 |
Tcl_Channel chan;
|
878 |
int mode;
|
879 |
char *arg;
|
880 |
|
881 |
if (objc != 2) {
|
882 |
Tcl_WrongNumArgs(interp, 1, objv, "channelId");
|
883 |
return TCL_ERROR;
|
884 |
}
|
885 |
|
886 |
arg = Tcl_GetString(objv[1]);
|
887 |
chan = Tcl_GetChannel(interp, arg, &mode);
|
888 |
if (chan == NULL) {
|
889 |
return TCL_ERROR;
|
890 |
}
|
891 |
if ((mode & TCL_READABLE) == 0) {
|
892 |
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "channel \"",
|
893 |
arg, "\" wasn't opened for reading", (char *) NULL);
|
894 |
return TCL_ERROR;
|
895 |
}
|
896 |
|
897 |
Tcl_SetBooleanObj(Tcl_GetObjResult(interp), Tcl_InputBlocked(chan));
|
898 |
return TCL_OK;
|
899 |
}
|
900 |
|
901 |
/*
|
902 |
*----------------------------------------------------------------------
|
903 |
*
|
904 |
* Tcl_OpenObjCmd --
|
905 |
*
|
906 |
* This procedure is invoked to process the "open" Tcl command.
|
907 |
* See the user documentation for details on what it does.
|
908 |
*
|
909 |
* Results:
|
910 |
* A standard Tcl result.
|
911 |
*
|
912 |
* Side effects:
|
913 |
* See the user documentation.
|
914 |
*
|
915 |
*----------------------------------------------------------------------
|
916 |
*/
|
917 |
|
918 |
/* ARGSUSED */
|
919 |
int
|
920 |
Tcl_OpenObjCmd(notUsed, interp, objc, objv)
|
921 |
ClientData notUsed; /* Not used. */
|
922 |
Tcl_Interp *interp; /* Current interpreter. */
|
923 |
int objc; /* Number of arguments. */
|
924 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
925 |
{
|
926 |
int pipeline, prot;
|
927 |
char *modeString, *what;
|
928 |
Tcl_Channel chan;
|
929 |
|
930 |
if ((objc < 2) || (objc > 4)) {
|
931 |
Tcl_WrongNumArgs(interp, 1, objv, "fileName ?access? ?permissions?");
|
932 |
return TCL_ERROR;
|
933 |
}
|
934 |
prot = 0666;
|
935 |
if (objc == 2) {
|
936 |
modeString = "r";
|
937 |
} else {
|
938 |
modeString = Tcl_GetString(objv[2]);
|
939 |
if (objc == 4) {
|
940 |
if (Tcl_GetIntFromObj(interp, objv[3], &prot) != TCL_OK) {
|
941 |
return TCL_ERROR;
|
942 |
}
|
943 |
}
|
944 |
}
|
945 |
|
946 |
pipeline = 0;
|
947 |
what = Tcl_GetString(objv[1]);
|
948 |
if (what[0] == '|') {
|
949 |
pipeline = 1;
|
950 |
}
|
951 |
|
952 |
/*
|
953 |
* Open the file or create a process pipeline.
|
954 |
*/
|
955 |
|
956 |
if (!pipeline) {
|
957 |
chan = Tcl_OpenFileChannel(interp, what, modeString, prot);
|
958 |
} else {
|
959 |
#ifdef MAC_TCL
|
960 |
Tcl_AppendResult(interp,
|
961 |
"command pipelines not supported on Macintosh OS",
|
962 |
(char *)NULL);
|
963 |
return TCL_ERROR;
|
964 |
#else
|
965 |
int mode, seekFlag, cmdObjc;
|
966 |
char **cmdArgv;
|
967 |
|
968 |
if (Tcl_SplitList(interp, what+1, &cmdObjc, &cmdArgv) != TCL_OK) {
|
969 |
return TCL_ERROR;
|
970 |
}
|
971 |
|
972 |
mode = TclGetOpenMode(interp, modeString, &seekFlag);
|
973 |
if (mode == -1) {
|
974 |
chan = NULL;
|
975 |
} else {
|
976 |
int flags = TCL_STDERR | TCL_ENFORCE_MODE;
|
977 |
switch (mode & (O_RDONLY | O_WRONLY | O_RDWR)) {
|
978 |
case O_RDONLY:
|
979 |
flags |= TCL_STDOUT;
|
980 |
break;
|
981 |
case O_WRONLY:
|
982 |
flags |= TCL_STDIN;
|
983 |
break;
|
984 |
case O_RDWR:
|
985 |
flags |= (TCL_STDIN | TCL_STDOUT);
|
986 |
break;
|
987 |
default:
|
988 |
panic("Tcl_OpenCmd: invalid mode value");
|
989 |
break;
|
990 |
}
|
991 |
chan = Tcl_OpenCommandChannel(interp, cmdObjc, cmdArgv, flags);
|
992 |
}
|
993 |
ckfree((char *) cmdArgv);
|
994 |
#endif
|
995 |
}
|
996 |
if (chan == (Tcl_Channel) NULL) {
|
997 |
return TCL_ERROR;
|
998 |
}
|
999 |
Tcl_RegisterChannel(interp, chan);
|
1000 |
Tcl_AppendResult(interp, Tcl_GetChannelName(chan), (char *) NULL);
|
1001 |
return TCL_OK;
|
1002 |
}
|
1003 |
|
1004 |
/*
|
1005 |
*----------------------------------------------------------------------
|
1006 |
*
|
1007 |
* TcpAcceptCallbacksDeleteProc --
|
1008 |
*
|
1009 |
* Assocdata cleanup routine called when an interpreter is being
|
1010 |
* deleted to set the interp field of all the accept callback records
|
1011 |
* registered with the interpreter to NULL. This will prevent the
|
1012 |
* interpreter from being used in the future to eval accept scripts.
|
1013 |
*
|
1014 |
* Results:
|
1015 |
* None.
|
1016 |
*
|
1017 |
* Side effects:
|
1018 |
* Deallocates memory and sets the interp field of all the accept
|
1019 |
* callback records to NULL to prevent this interpreter from being
|
1020 |
* used subsequently to eval accept scripts.
|
1021 |
*
|
1022 |
*----------------------------------------------------------------------
|
1023 |
*/
|
1024 |
|
1025 |
/* ARGSUSED */
|
1026 |
static void
|
1027 |
TcpAcceptCallbacksDeleteProc(clientData, interp)
|
1028 |
ClientData clientData; /* Data which was passed when the assocdata
|
1029 |
* was registered. */
|
1030 |
Tcl_Interp *interp; /* Interpreter being deleted - not used. */
|
1031 |
{
|
1032 |
Tcl_HashTable *hTblPtr;
|
1033 |
Tcl_HashEntry *hPtr;
|
1034 |
Tcl_HashSearch hSearch;
|
1035 |
AcceptCallback *acceptCallbackPtr;
|
1036 |
|
1037 |
hTblPtr = (Tcl_HashTable *) clientData;
|
1038 |
for (hPtr = Tcl_FirstHashEntry(hTblPtr, &hSearch);
|
1039 |
hPtr != (Tcl_HashEntry *) NULL;
|
1040 |
hPtr = Tcl_NextHashEntry(&hSearch)) {
|
1041 |
acceptCallbackPtr = (AcceptCallback *) Tcl_GetHashValue(hPtr);
|
1042 |
acceptCallbackPtr->interp = (Tcl_Interp *) NULL;
|
1043 |
}
|
1044 |
Tcl_DeleteHashTable(hTblPtr);
|
1045 |
ckfree((char *) hTblPtr);
|
1046 |
}
|
1047 |
|
1048 |
/*
|
1049 |
*----------------------------------------------------------------------
|
1050 |
*
|
1051 |
* RegisterTcpServerInterpCleanup --
|
1052 |
*
|
1053 |
* Registers an accept callback record to have its interp
|
1054 |
* field set to NULL when the interpreter is deleted.
|
1055 |
*
|
1056 |
* Results:
|
1057 |
* None.
|
1058 |
*
|
1059 |
* Side effects:
|
1060 |
* When, in the future, the interpreter is deleted, the interp
|
1061 |
* field of the accept callback data structure will be set to
|
1062 |
* NULL. This will prevent attempts to eval the accept script
|
1063 |
* in a deleted interpreter.
|
1064 |
*
|
1065 |
*----------------------------------------------------------------------
|
1066 |
*/
|
1067 |
|
1068 |
static void
|
1069 |
RegisterTcpServerInterpCleanup(interp, acceptCallbackPtr)
|
1070 |
Tcl_Interp *interp; /* Interpreter for which we want to be
|
1071 |
* informed of deletion. */
|
1072 |
AcceptCallback *acceptCallbackPtr;
|
1073 |
/* The accept callback record whose
|
1074 |
* interp field we want set to NULL when
|
1075 |
* the interpreter is deleted. */
|
1076 |
{
|
1077 |
Tcl_HashTable *hTblPtr; /* Hash table for accept callback
|
1078 |
* records to smash when the interpreter
|
1079 |
* will be deleted. */
|
1080 |
Tcl_HashEntry *hPtr; /* Entry for this record. */
|
1081 |
int new; /* Is the entry new? */
|
1082 |
|
1083 |
hTblPtr = (Tcl_HashTable *) Tcl_GetAssocData(interp,
|
1084 |
"tclTCPAcceptCallbacks",
|
1085 |
NULL);
|
1086 |
if (hTblPtr == (Tcl_HashTable *) NULL) {
|
1087 |
hTblPtr = (Tcl_HashTable *) ckalloc((unsigned) sizeof(Tcl_HashTable));
|
1088 |
Tcl_InitHashTable(hTblPtr, TCL_ONE_WORD_KEYS);
|
1089 |
(void) Tcl_SetAssocData(interp, "tclTCPAcceptCallbacks",
|
1090 |
TcpAcceptCallbacksDeleteProc, (ClientData) hTblPtr);
|
1091 |
}
|
1092 |
hPtr = Tcl_CreateHashEntry(hTblPtr, (char *) acceptCallbackPtr, &new);
|
1093 |
if (!new) {
|
1094 |
panic("RegisterTcpServerCleanup: damaged accept record table");
|
1095 |
}
|
1096 |
Tcl_SetHashValue(hPtr, (ClientData) acceptCallbackPtr);
|
1097 |
}
|
1098 |
|
1099 |
/*
|
1100 |
*----------------------------------------------------------------------
|
1101 |
*
|
1102 |
* UnregisterTcpServerInterpCleanupProc --
|
1103 |
*
|
1104 |
* Unregister a previously registered accept callback record. The
|
1105 |
* interp field of this record will no longer be set to NULL in
|
1106 |
* the future when the interpreter is deleted.
|
1107 |
*
|
1108 |
* Results:
|
1109 |
* None.
|
1110 |
*
|
1111 |
* Side effects:
|
1112 |
* Prevents the interp field of the accept callback record from
|
1113 |
* being set to NULL in the future when the interpreter is deleted.
|
1114 |
*
|
1115 |
*----------------------------------------------------------------------
|
1116 |
*/
|
1117 |
|
1118 |
static void
|
1119 |
UnregisterTcpServerInterpCleanupProc(interp, acceptCallbackPtr)
|
1120 |
Tcl_Interp *interp; /* Interpreter in which the accept callback
|
1121 |
* record was registered. */
|
1122 |
AcceptCallback *acceptCallbackPtr;
|
1123 |
/* The record for which to delete the
|
1124 |
* registration. */
|
1125 |
{
|
1126 |
Tcl_HashTable *hTblPtr;
|
1127 |
Tcl_HashEntry *hPtr;
|
1128 |
|
1129 |
hTblPtr = (Tcl_HashTable *) Tcl_GetAssocData(interp,
|
1130 |
"tclTCPAcceptCallbacks", NULL);
|
1131 |
if (hTblPtr == (Tcl_HashTable *) NULL) {
|
1132 |
return;
|
1133 |
}
|
1134 |
hPtr = Tcl_FindHashEntry(hTblPtr, (char *) acceptCallbackPtr);
|
1135 |
if (hPtr == (Tcl_HashEntry *) NULL) {
|
1136 |
return;
|
1137 |
}
|
1138 |
Tcl_DeleteHashEntry(hPtr);
|
1139 |
}
|
1140 |
|
1141 |
/*
|
1142 |
*----------------------------------------------------------------------
|
1143 |
*
|
1144 |
* AcceptCallbackProc --
|
1145 |
*
|
1146 |
* This callback is invoked by the TCP channel driver when it
|
1147 |
* accepts a new connection from a client on a server socket.
|
1148 |
*
|
1149 |
* Results:
|
1150 |
* None.
|
1151 |
*
|
1152 |
* Side effects:
|
1153 |
* Whatever the script does.
|
1154 |
*
|
1155 |
*----------------------------------------------------------------------
|
1156 |
*/
|
1157 |
|
1158 |
static void
|
1159 |
AcceptCallbackProc(callbackData, chan, address, port)
|
1160 |
ClientData callbackData; /* The data stored when the callback
|
1161 |
* was created in the call to
|
1162 |
* Tcl_OpenTcpServer. */
|
1163 |
Tcl_Channel chan; /* Channel for the newly accepted
|
1164 |
* connection. */
|
1165 |
char *address; /* Address of client that was
|
1166 |
* accepted. */
|
1167 |
int port; /* Port of client that was accepted. */
|
1168 |
{
|
1169 |
AcceptCallback *acceptCallbackPtr;
|
1170 |
Tcl_Interp *interp;
|
1171 |
char *script;
|
1172 |
char portBuf[TCL_INTEGER_SPACE];
|
1173 |
int result;
|
1174 |
|
1175 |
acceptCallbackPtr = (AcceptCallback *) callbackData;
|
1176 |
|
1177 |
/*
|
1178 |
* Check if the callback is still valid; the interpreter may have gone
|
1179 |
* away, this is signalled by setting the interp field of the callback
|
1180 |
* data to NULL.
|
1181 |
*/
|
1182 |
|
1183 |
if (acceptCallbackPtr->interp != (Tcl_Interp *) NULL) {
|
1184 |
|
1185 |
script = acceptCallbackPtr->script;
|
1186 |
interp = acceptCallbackPtr->interp;
|
1187 |
|
1188 |
Tcl_Preserve((ClientData) script);
|
1189 |
Tcl_Preserve((ClientData) interp);
|
1190 |
|
1191 |
TclFormatInt(portBuf, port);
|
1192 |
Tcl_RegisterChannel(interp, chan);
|
1193 |
|
1194 |
/*
|
1195 |
* Artificially bump the refcount to protect the channel from
|
1196 |
* being deleted while the script is being evaluated.
|
1197 |
*/
|
1198 |
|
1199 |
Tcl_RegisterChannel((Tcl_Interp *) NULL, chan);
|
1200 |
|
1201 |
result = Tcl_VarEval(interp, script, " ", Tcl_GetChannelName(chan),
|
1202 |
" ", address, " ", portBuf, (char *) NULL);
|
1203 |
if (result != TCL_OK) {
|
1204 |
Tcl_BackgroundError(interp);
|
1205 |
Tcl_UnregisterChannel(interp, chan);
|
1206 |
}
|
1207 |
|
1208 |
/*
|
1209 |
* Decrement the artificially bumped refcount. After this it is
|
1210 |
* not safe anymore to use "chan", because it may now be deleted.
|
1211 |
*/
|
1212 |
|
1213 |
Tcl_UnregisterChannel((Tcl_Interp *) NULL, chan);
|
1214 |
|
1215 |
Tcl_Release((ClientData) interp);
|
1216 |
Tcl_Release((ClientData) script);
|
1217 |
} else {
|
1218 |
|
1219 |
/*
|
1220 |
* The interpreter has been deleted, so there is no useful
|
1221 |
* way to utilize the client socket - just close it.
|
1222 |
*/
|
1223 |
|
1224 |
Tcl_Close((Tcl_Interp *) NULL, chan);
|
1225 |
}
|
1226 |
}
|
1227 |
|
1228 |
/*
|
1229 |
*----------------------------------------------------------------------
|
1230 |
*
|
1231 |
* TcpServerCloseProc --
|
1232 |
*
|
1233 |
* This callback is called when the TCP server channel for which it
|
1234 |
* was registered is being closed. It informs the interpreter in
|
1235 |
* which the accept script is evaluated (if that interpreter still
|
1236 |
* exists) that this channel no longer needs to be informed if the
|
1237 |
* interpreter is deleted.
|
1238 |
*
|
1239 |
* Results:
|
1240 |
* None.
|
1241 |
*
|
1242 |
* Side effects:
|
1243 |
* In the future, if the interpreter is deleted this channel will
|
1244 |
* no longer be informed.
|
1245 |
*
|
1246 |
*----------------------------------------------------------------------
|
1247 |
*/
|
1248 |
|
1249 |
static void
|
1250 |
TcpServerCloseProc(callbackData)
|
1251 |
ClientData callbackData; /* The data passed in the call to
|
1252 |
* Tcl_CreateCloseHandler. */
|
1253 |
{
|
1254 |
AcceptCallback *acceptCallbackPtr;
|
1255 |
/* The actual data. */
|
1256 |
|
1257 |
acceptCallbackPtr = (AcceptCallback *) callbackData;
|
1258 |
if (acceptCallbackPtr->interp != (Tcl_Interp *) NULL) {
|
1259 |
UnregisterTcpServerInterpCleanupProc(acceptCallbackPtr->interp,
|
1260 |
acceptCallbackPtr);
|
1261 |
}
|
1262 |
Tcl_EventuallyFree((ClientData) acceptCallbackPtr->script, TCL_DYNAMIC);
|
1263 |
ckfree((char *) acceptCallbackPtr);
|
1264 |
}
|
1265 |
|
1266 |
/*
|
1267 |
*----------------------------------------------------------------------
|
1268 |
*
|
1269 |
* Tcl_SocketObjCmd --
|
1270 |
*
|
1271 |
* This procedure is invoked to process the "socket" Tcl command.
|
1272 |
* See the user documentation for details on what it does.
|
1273 |
*
|
1274 |
* Results:
|
1275 |
* A standard Tcl result.
|
1276 |
*
|
1277 |
* Side effects:
|
1278 |
* Creates a socket based channel.
|
1279 |
*
|
1280 |
*----------------------------------------------------------------------
|
1281 |
*/
|
1282 |
|
1283 |
int
|
1284 |
Tcl_SocketObjCmd(notUsed, interp, objc, objv)
|
1285 |
ClientData notUsed; /* Not used. */
|
1286 |
Tcl_Interp *interp; /* Current interpreter. */
|
1287 |
int objc; /* Number of arguments. */
|
1288 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
1289 |
{
|
1290 |
static char *socketOptions[] = {
|
1291 |
"-async", "-myaddr", "-myport","-server", (char *) NULL
|
1292 |
};
|
1293 |
enum socketOptions {
|
1294 |
SKT_ASYNC, SKT_MYADDR, SKT_MYPORT, SKT_SERVER
|
1295 |
};
|
1296 |
int optionIndex, a, server, port;
|
1297 |
char *arg, *copyScript, *host, *script;
|
1298 |
char *myaddr = NULL;
|
1299 |
int myport = 0;
|
1300 |
int async = 0;
|
1301 |
Tcl_Channel chan;
|
1302 |
AcceptCallback *acceptCallbackPtr;
|
1303 |
|
1304 |
server = 0;
|
1305 |
script = NULL;
|
1306 |
|
1307 |
if (TclpHasSockets(interp) != TCL_OK) {
|
1308 |
return TCL_ERROR;
|
1309 |
}
|
1310 |
|
1311 |
for (a = 1; a < objc; a++) {
|
1312 |
arg = Tcl_GetString(objv[a]);
|
1313 |
if (arg[0] != '-') {
|
1314 |
break;
|
1315 |
}
|
1316 |
if (Tcl_GetIndexFromObj(interp, objv[a], socketOptions,
|
1317 |
"option", TCL_EXACT, &optionIndex) != TCL_OK) {
|
1318 |
return TCL_ERROR;
|
1319 |
}
|
1320 |
switch ((enum socketOptions) optionIndex) {
|
1321 |
case SKT_ASYNC: {
|
1322 |
if (server == 1) {
|
1323 |
Tcl_AppendResult(interp,
|
1324 |
"cannot set -async option for server sockets",
|
1325 |
(char *) NULL);
|
1326 |
return TCL_ERROR;
|
1327 |
}
|
1328 |
async = 1;
|
1329 |
break;
|
1330 |
}
|
1331 |
case SKT_MYADDR: {
|
1332 |
a++;
|
1333 |
if (a >= objc) {
|
1334 |
Tcl_AppendResult(interp,
|
1335 |
"no argument given for -myaddr option",
|
1336 |
(char *) NULL);
|
1337 |
return TCL_ERROR;
|
1338 |
}
|
1339 |
myaddr = Tcl_GetString(objv[a]);
|
1340 |
break;
|
1341 |
}
|
1342 |
case SKT_MYPORT: {
|
1343 |
char *myPortName;
|
1344 |
a++;
|
1345 |
if (a >= objc) {
|
1346 |
Tcl_AppendResult(interp,
|
1347 |
"no argument given for -myport option",
|
1348 |
(char *) NULL);
|
1349 |
return TCL_ERROR;
|
1350 |
}
|
1351 |
myPortName = Tcl_GetString(objv[a]);
|
1352 |
if (TclSockGetPort(interp, myPortName, "tcp", &myport)
|
1353 |
!= TCL_OK) {
|
1354 |
return TCL_ERROR;
|
1355 |
}
|
1356 |
break;
|
1357 |
}
|
1358 |
case SKT_SERVER: {
|
1359 |
if (async == 1) {
|
1360 |
Tcl_AppendResult(interp,
|
1361 |
"cannot set -async option for server sockets",
|
1362 |
(char *) NULL);
|
1363 |
return TCL_ERROR;
|
1364 |
}
|
1365 |
server = 1;
|
1366 |
a++;
|
1367 |
if (a >= objc) {
|
1368 |
Tcl_AppendResult(interp,
|
1369 |
"no argument given for -server option",
|
1370 |
(char *) NULL);
|
1371 |
return TCL_ERROR;
|
1372 |
}
|
1373 |
script = Tcl_GetString(objv[a]);
|
1374 |
break;
|
1375 |
}
|
1376 |
default: {
|
1377 |
panic("Tcl_SocketObjCmd: bad option index to SocketOptions");
|
1378 |
}
|
1379 |
}
|
1380 |
}
|
1381 |
if (server) {
|
1382 |
host = myaddr; /* NULL implies INADDR_ANY */
|
1383 |
if (myport != 0) {
|
1384 |
Tcl_AppendResult(interp, "Option -myport is not valid for servers",
|
1385 |
NULL);
|
1386 |
return TCL_ERROR;
|
1387 |
}
|
1388 |
} else if (a < objc) {
|
1389 |
host = Tcl_GetString(objv[a]);
|
1390 |
a++;
|
1391 |
} else {
|
1392 |
wrongNumArgs:
|
1393 |
Tcl_AppendResult(interp, "wrong # args: should be either:\n",
|
1394 |
Tcl_GetString(objv[0]),
|
1395 |
" ?-myaddr addr? ?-myport myport? ?-async? host port\n",
|
1396 |
Tcl_GetString(objv[0]),
|
1397 |
" -server command ?-myaddr addr? port",
|
1398 |
(char *) NULL);
|
1399 |
return TCL_ERROR;
|
1400 |
}
|
1401 |
|
1402 |
if (a == objc-1) {
|
1403 |
if (TclSockGetPort(interp, Tcl_GetString(objv[a]),
|
1404 |
"tcp", &port) != TCL_OK) {
|
1405 |
return TCL_ERROR;
|
1406 |
}
|
1407 |
} else {
|
1408 |
goto wrongNumArgs;
|
1409 |
}
|
1410 |
|
1411 |
if (server) {
|
1412 |
acceptCallbackPtr = (AcceptCallback *) ckalloc((unsigned)
|
1413 |
sizeof(AcceptCallback));
|
1414 |
copyScript = ckalloc((unsigned) strlen(script) + 1);
|
1415 |
strcpy(copyScript, script);
|
1416 |
acceptCallbackPtr->script = copyScript;
|
1417 |
acceptCallbackPtr->interp = interp;
|
1418 |
chan = Tcl_OpenTcpServer(interp, port, host, AcceptCallbackProc,
|
1419 |
(ClientData) acceptCallbackPtr);
|
1420 |
if (chan == (Tcl_Channel) NULL) {
|
1421 |
ckfree(copyScript);
|
1422 |
ckfree((char *) acceptCallbackPtr);
|
1423 |
return TCL_ERROR;
|
1424 |
}
|
1425 |
|
1426 |
/*
|
1427 |
* Register with the interpreter to let us know when the
|
1428 |
* interpreter is deleted (by having the callback set the
|
1429 |
* acceptCallbackPtr->interp field to NULL). This is to
|
1430 |
* avoid trying to eval the script in a deleted interpreter.
|
1431 |
*/
|
1432 |
|
1433 |
RegisterTcpServerInterpCleanup(interp, acceptCallbackPtr);
|
1434 |
|
1435 |
/*
|
1436 |
* Register a close callback. This callback will inform the
|
1437 |
* interpreter (if it still exists) that this channel does not
|
1438 |
* need to be informed when the interpreter is deleted.
|
1439 |
*/
|
1440 |
|
1441 |
Tcl_CreateCloseHandler(chan, TcpServerCloseProc,
|
1442 |
(ClientData) acceptCallbackPtr);
|
1443 |
} else {
|
1444 |
chan = Tcl_OpenTcpClient(interp, port, host, myaddr, myport, async);
|
1445 |
if (chan == (Tcl_Channel) NULL) {
|
1446 |
return TCL_ERROR;
|
1447 |
}
|
1448 |
}
|
1449 |
Tcl_RegisterChannel(interp, chan);
|
1450 |
Tcl_AppendResult(interp, Tcl_GetChannelName(chan), (char *) NULL);
|
1451 |
|
1452 |
return TCL_OK;
|
1453 |
}
|
1454 |
|
1455 |
/*
|
1456 |
*----------------------------------------------------------------------
|
1457 |
*
|
1458 |
* Tcl_FcopyObjCmd --
|
1459 |
*
|
1460 |
* This procedure is invoked to process the "fcopy" Tcl command.
|
1461 |
* See the user documentation for details on what it does.
|
1462 |
*
|
1463 |
* Results:
|
1464 |
* A standard Tcl result.
|
1465 |
*
|
1466 |
* Side effects:
|
1467 |
* Moves data between two channels and possibly sets up a
|
1468 |
* background copy handler.
|
1469 |
*
|
1470 |
*----------------------------------------------------------------------
|
1471 |
*/
|
1472 |
|
1473 |
int
|
1474 |
Tcl_FcopyObjCmd(dummy, interp, objc, objv)
|
1475 |
ClientData dummy; /* Not used. */
|
1476 |
Tcl_Interp *interp; /* Current interpreter. */
|
1477 |
int objc; /* Number of arguments. */
|
1478 |
Tcl_Obj *CONST objv[]; /* Argument objects. */
|
1479 |
{
|
1480 |
Tcl_Channel inChan, outChan;
|
1481 |
char *arg;
|
1482 |
int mode, i;
|
1483 |
int toRead, index;
|
1484 |
Tcl_Obj *cmdPtr;
|
1485 |
static char* switches[] = { "-size", "-command", NULL };
|
1486 |
enum { FcopySize, FcopyCommand };
|
1487 |
|
1488 |
if ((objc < 3) || (objc > 7) || (objc == 4) || (objc == 6)) {
|
1489 |
Tcl_WrongNumArgs(interp, 1, objv,
|
1490 |
"input output ?-size size? ?-command callback?");
|
1491 |
return TCL_ERROR;
|
1492 |
}
|
1493 |
|
1494 |
/*
|
1495 |
* Parse the channel arguments and verify that they are readable
|
1496 |
* or writable, as appropriate.
|
1497 |
*/
|
1498 |
|
1499 |
arg = Tcl_GetString(objv[1]);
|
1500 |
inChan = Tcl_GetChannel(interp, arg, &mode);
|
1501 |
if (inChan == (Tcl_Channel) NULL) {
|
1502 |
return TCL_ERROR;
|
1503 |
}
|
1504 |
if ((mode & TCL_READABLE) == 0) {
|
1505 |
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "channel \"",
|
1506 |
Tcl_GetString(objv[1]),
|
1507 |
"\" wasn't opened for reading", (char *) NULL);
|
1508 |
return TCL_ERROR;
|
1509 |
}
|
1510 |
arg = Tcl_GetString(objv[2]);
|
1511 |
outChan = Tcl_GetChannel(interp, arg, &mode);
|
1512 |
if (outChan == (Tcl_Channel) NULL) {
|
1513 |
return TCL_ERROR;
|
1514 |
}
|
1515 |
if ((mode & TCL_WRITABLE) == 0) {
|
1516 |
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "channel \"",
|
1517 |
Tcl_GetString(objv[1]),
|
1518 |
"\" wasn't opened for writing", (char *) NULL);
|
1519 |
return TCL_ERROR;
|
1520 |
}
|
1521 |
|
1522 |
toRead = -1;
|
1523 |
cmdPtr = NULL;
|
1524 |
for (i = 3; i < objc; i += 2) {
|
1525 |
if (Tcl_GetIndexFromObj(interp, objv[i], switches, "switch", 0,
|
1526 |
(int *) &index) != TCL_OK) {
|
1527 |
return TCL_ERROR;
|
1528 |
}
|
1529 |
switch (index) {
|
1530 |
case FcopySize:
|
1531 |
if (Tcl_GetIntFromObj(interp, objv[i+1], &toRead) != TCL_OK) {
|
1532 |
return TCL_ERROR;
|
1533 |
}
|
1534 |
break;
|
1535 |
case FcopyCommand:
|
1536 |
cmdPtr = objv[i+1];
|
1537 |
break;
|
1538 |
}
|
1539 |
}
|
1540 |
|
1541 |
return TclCopyChannel(interp, inChan, outChan, toRead, cmdPtr);
|
1542 |
}
|
1543 |
|
1544 |
/* End of tcliocmd.c */
|