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bb04fb6a0708562b4e70b53be6a1620199fe4d36
[openocd.git] / src / helper / command.c
blobbb04fb6a0708562b4e70b53be6a1620199fe4d36
1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
4 * *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
7 * *
8 * Copyright (C) 2008, Duane Ellis *
9 * openocd@duaneeellis.com *
10 * *
11 * part of this file is taken from libcli (libcli.sourceforge.net) *
12 * Copyright (C) David Parrish (david@dparrish.com) *
13 * *
14 * This program is free software; you can redistribute it and/or modify *
15 * it under the terms of the GNU General Public License as published by *
16 * the Free Software Foundation; either version 2 of the License, or *
17 * (at your option) any later version. *
18 * *
19 * This program is distributed in the hope that it will be useful, *
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
22 * GNU General Public License for more details. *
23 * *
24 * You should have received a copy of the GNU General Public License *
25 * along with this program; if not, write to the *
26 * Free Software Foundation, Inc., *
27 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
28 ***************************************************************************/
29
30 #ifdef HAVE_CONFIG_H
31 #include "config.h"
32 #endif
33
34 /* see Embedded-HOWTO.txt in Jim Tcl project hosted on BerliOS*/
35 #define JIM_EMBEDDED
36
37 /* @todo the inclusion of target.h here is a layering violation */
38 #include <jtag/jtag.h>
39 #include <target/target.h>
40 #include "command.h"
41 #include "configuration.h"
42 #include "log.h"
43 #include "time_support.h"
44 #include "jim-eventloop.h"
45
46 /* nice short description of source file */
47 #define __THIS__FILE__ "command.c"
48
49 static int run_command(struct command_context *context,
50 struct command *c, const char *words[], unsigned num_words);
51
52 struct log_capture_state {
53 Jim_Interp *interp;
54 Jim_Obj *output;
55 };
56
57 static void tcl_output(void *privData, const char *file, unsigned line,
58 const char *function, const char *string)
59 {
60 struct log_capture_state *state = (struct log_capture_state *)privData;
61 Jim_AppendString(state->interp, state->output, string, strlen(string));
62 }
63
64 static struct log_capture_state *command_log_capture_start(Jim_Interp *interp)
65 {
66 /* capture log output and return it. A garbage collect can
67 * happen, so we need a reference count to this object */
68 Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);
69 if (NULL == tclOutput)
70 return NULL;
71
72 struct log_capture_state *state = malloc(sizeof(*state));
73 if (NULL == state)
74 return NULL;
75
76 state->interp = interp;
77 Jim_IncrRefCount(tclOutput);
78 state->output = tclOutput;
79
80 log_add_callback(tcl_output, state);
81
82 return state;
83 }
84
85 /* Classic openocd commands provide progress output which we
86 * will capture and return as a Tcl return value.
87 *
88 * However, if a non-openocd command has been invoked, then it
89 * makes sense to return the tcl return value from that command.
90 *
91 * The tcl return value is empty for openocd commands that provide
92 * progress output.
93 *
94 * Therefore we set the tcl return value only if we actually
95 * captured output.
96 */
97 static void command_log_capture_finish(struct log_capture_state *state)
98 {
99 if (NULL == state)
100 return;
101
102 log_remove_callback(tcl_output, state);
103
104 int length;
105 Jim_GetString(state->output, &length);
106
107 if (length > 0)
108 Jim_SetResult(state->interp, state->output);
109 else {
110 /* No output captured, use tcl return value (which could
111 * be empty too). */
112 }
113 Jim_DecrRefCount(state->interp, state->output);
114
115 free(state);
116 }
117
118 static int command_retval_set(Jim_Interp *interp, int retval)
119 {
120 int *return_retval = Jim_GetAssocData(interp, "retval");
121 if (return_retval != NULL)
122 *return_retval = retval;
123
124 return (retval == ERROR_OK) ? JIM_OK : JIM_ERR;
125 }
126
127 extern struct command_context *global_cmd_ctx;
128
129 /* dump a single line to the log for the command.
130 * Do nothing in case we are not at debug level 3 */
131 void script_debug(Jim_Interp *interp, const char *name,
132 unsigned argc, Jim_Obj * const *argv)
133 {
134 if (debug_level < LOG_LVL_DEBUG)
135 return;
136
137 char *dbg = alloc_printf("command - %s", name);
138 for (unsigned i = 0; i < argc; i++) {
139 int len;
140 const char *w = Jim_GetString(argv[i], &len);
141 char *t = alloc_printf("%s %s", dbg, w);
142 free(dbg);
143 dbg = t;
144 }
145 LOG_DEBUG("%s", dbg);
146 free(dbg);
147 }
148
149 static void script_command_args_free(const char **words, unsigned nwords)
150 {
151 for (unsigned i = 0; i < nwords; i++)
152 free((void *)words[i]);
153 free(words);
154 }
155
156 static const char **script_command_args_alloc(
157 unsigned argc, Jim_Obj * const *argv, unsigned *nwords)
158 {
159 const char **words = malloc(argc * sizeof(char *));
160 if (NULL == words)
161 return NULL;
162
163 unsigned i;
164 for (i = 0; i < argc; i++) {
165 int len;
166 const char *w = Jim_GetString(argv[i], &len);
167 words[i] = strdup(w);
168 if (words[i] == NULL) {
169 script_command_args_free(words, i);
170 return NULL;
171 }
172 }
173 *nwords = i;
174 return words;
175 }
176
177 struct command_context *current_command_context(Jim_Interp *interp)
178 {
179 /* grab the command context from the associated data */
180 struct command_context *cmd_ctx = Jim_GetAssocData(interp, "context");
181 if (NULL == cmd_ctx) {
182 /* Tcl can invoke commands directly instead of via command_run_line(). This would
183 * happen when the Jim Tcl interpreter is provided by eCos or if we are running
184 * commands in a startup script.
185 *
186 * A telnet or gdb server would provide a non-default command context to
187 * handle piping of error output, have a separate current target, etc.
188 */
189 cmd_ctx = global_cmd_ctx;
190 }
191 return cmd_ctx;
192 }
193
194 static int script_command_run(Jim_Interp *interp,
195 int argc, Jim_Obj * const *argv, struct command *c, bool capture)
196 {
197 target_call_timer_callbacks_now();
198 LOG_USER_N("%s", ""); /* Keep GDB connection alive*/
199
200 unsigned nwords;
201 const char **words = script_command_args_alloc(argc, argv, &nwords);
202 if (NULL == words)
203 return JIM_ERR;
204
205 struct log_capture_state *state = NULL;
206 if (capture)
207 state = command_log_capture_start(interp);
208
209 struct command_context *cmd_ctx = current_command_context(interp);
210 int retval = run_command(cmd_ctx, c, (const char **)words, nwords);
211
212 command_log_capture_finish(state);
213
214 script_command_args_free(words, nwords);
215 return command_retval_set(interp, retval);
216 }
217
218 static int script_command(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
219 {
220 /* the private data is stashed in the interp structure */
221
222 struct command *c = interp->cmdPrivData;
223 assert(c);
224 script_debug(interp, c->name, argc, argv);
225 return script_command_run(interp, argc, argv, c, true);
226 }
227
228 static struct command *command_root(struct command *c)
229 {
230 while (NULL != c->parent)
231 c = c->parent;
232 return c;
233 }
234
235 /**
236 * Find a command by name from a list of commands.
237 * @returns Returns the named command if it exists in the list.
238 * Returns NULL otherwise.
239 */
240 static struct command *command_find(struct command *head, const char *name)
241 {
242 for (struct command *cc = head; cc; cc = cc->next) {
243 if (strcmp(cc->name, name) == 0)
244 return cc;
245 }
246 return NULL;
247 }
248
249 struct command *command_find_in_context(struct command_context *cmd_ctx,
250 const char *name)
251 {
252 return command_find(cmd_ctx->commands, name);
253 }
254 struct command *command_find_in_parent(struct command *parent,
255 const char *name)
256 {
257 return command_find(parent->children, name);
258 }
259
260 /**
261 * Add the command into the linked list, sorted by name.
262 * @param head Address to head of command list pointer, which may be
263 * updated if @c c gets inserted at the beginning of the list.
264 * @param c The command to add to the list pointed to by @c head.
265 */
266 static void command_add_child(struct command **head, struct command *c)
267 {
268 assert(head);
269 if (NULL == *head) {
270 *head = c;
271 return;
272 }
273
274 while ((*head)->next && (strcmp(c->name, (*head)->name) > 0))
275 head = &(*head)->next;
276
277 if (strcmp(c->name, (*head)->name) > 0) {
278 c->next = (*head)->next;
279 (*head)->next = c;
280 } else {
281 c->next = *head;
282 *head = c;
283 }
284 }
285
286 static struct command **command_list_for_parent(
287 struct command_context *cmd_ctx, struct command *parent)
288 {
289 return parent ? &parent->children : &cmd_ctx->commands;
290 }
291
292 static void command_free(struct command *c)
293 {
294 /** @todo if command has a handler, unregister its jim command! */
295
296 while (NULL != c->children) {
297 struct command *tmp = c->children;
298 c->children = tmp->next;
299 command_free(tmp);
300 }
301
302 if (c->name)
303 free((void *)c->name);
304 if (c->help)
305 free((void *)c->help);
306 if (c->usage)
307 free((void *)c->usage);
308 free(c);
309 }
310
311 static struct command *command_new(struct command_context *cmd_ctx,
312 struct command *parent, const struct command_registration *cr)
313 {
314 assert(cr->name);
315
316 /*
317 * If it is a non-jim command with no .usage specified,
318 * log an error.
319 *
320 * strlen(.usage) == 0 means that the command takes no
321 * arguments.
322 */
323 if ((cr->jim_handler == NULL) && (cr->usage == NULL)) {
324 LOG_DEBUG("BUG: command '%s%s%s' does not have the "
325 "'.usage' field filled out",
326 parent && parent->name ? parent->name : "",
327 parent && parent->name ? " " : "",
328 cr->name);
329 }
330
331 struct command *c = calloc(1, sizeof(struct command));
332 if (NULL == c)
333 return NULL;
334
335 c->name = strdup(cr->name);
336 if (cr->help)
337 c->help = strdup(cr->help);
338 if (cr->usage)
339 c->usage = strdup(cr->usage);
340
341 if (!c->name || (cr->help && !c->help) || (cr->usage && !c->usage))
342 goto command_new_error;
343
344 c->parent = parent;
345 c->handler = cr->handler;
346 c->jim_handler = cr->jim_handler;
347 c->jim_handler_data = cr->jim_handler_data;
348 c->mode = cr->mode;
349
350 command_add_child(command_list_for_parent(cmd_ctx, parent), c);
351
352 return c;
353
354 command_new_error:
355 command_free(c);
356 return NULL;
357 }
358
359 static int command_unknown(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
360
361 static int register_command_handler(struct command_context *cmd_ctx,
362 struct command *c)
363 {
364 Jim_Interp *interp = cmd_ctx->interp;
365 const char *ocd_name = alloc_printf("ocd_%s", c->name);
366 if (NULL == ocd_name)
367 return JIM_ERR;
368
369 LOG_DEBUG("registering '%s'...", ocd_name);
370
371 Jim_CmdProc func = c->handler ? &script_command : &command_unknown;
372 int retval = Jim_CreateCommand(interp, ocd_name, func, c, NULL);
373 free((void *)ocd_name);
374 if (JIM_OK != retval)
375 return retval;
376
377 /* we now need to add an overrideable proc */
378 const char *override_name = alloc_printf(
379 "proc %s {args} {eval ocd_bouncer %s $args}",
380 c->name, c->name);
381 if (NULL == override_name)
382 return JIM_ERR;
383
384 retval = Jim_Eval_Named(interp, override_name, 0, 0);
385 free((void *)override_name);
386
387 return retval;
388 }
389
390 struct command *register_command(struct command_context *context,
391 struct command *parent, const struct command_registration *cr)
392 {
393 if (!context || !cr->name)
394 return NULL;
395
396 const char *name = cr->name;
397 struct command **head = command_list_for_parent(context, parent);
398 struct command *c = command_find(*head, name);
399 if (NULL != c) {
400 /* TODO: originally we treated attempting to register a cmd twice as an error
401 * Sometimes we need this behaviour, such as with flash banks.
402 * http://www.mail-archive.com/openocd-development@lists.berlios.de/msg11152.html */
403 LOG_DEBUG("command '%s' is already registered in '%s' context",
404 name, parent ? parent->name : "<global>");
405 return c;
406 }
407
408 c = command_new(context, parent, cr);
409 if (NULL == c)
410 return NULL;
411
412 int retval = ERROR_OK;
413 if (NULL != cr->jim_handler && NULL == parent) {
414 retval = Jim_CreateCommand(context->interp, cr->name,
415 cr->jim_handler, cr->jim_handler_data, NULL);
416 } else if (NULL != cr->handler || NULL != parent)
417 retval = register_command_handler(context, command_root(c));
418
419 if (ERROR_OK != retval) {
420 unregister_command(context, parent, name);
421 c = NULL;
422 }
423 return c;
424 }
425
426 int register_commands(struct command_context *cmd_ctx, struct command *parent,
427 const struct command_registration *cmds)
428 {
429 int retval = ERROR_OK;
430 unsigned i;
431 for (i = 0; cmds[i].name || cmds[i].chain; i++) {
432 const struct command_registration *cr = cmds + i;
433
434 struct command *c = NULL;
435 if (NULL != cr->name) {
436 c = register_command(cmd_ctx, parent, cr);
437 if (NULL == c) {
438 retval = ERROR_FAIL;
439 break;
440 }
441 }
442 if (NULL != cr->chain) {
443 struct command *p = c ? : parent;
444 retval = register_commands(cmd_ctx, p, cr->chain);
445 if (ERROR_OK != retval)
446 break;
447 }
448 }
449 if (ERROR_OK != retval) {
450 for (unsigned j = 0; j < i; j++)
451 unregister_command(cmd_ctx, parent, cmds[j].name);
452 }
453 return retval;
454 }
455
456 int unregister_all_commands(struct command_context *context,
457 struct command *parent)
458 {
459 if (context == NULL)
460 return ERROR_OK;
461
462 struct command **head = command_list_for_parent(context, parent);
463 while (NULL != *head) {
464 struct command *tmp = *head;
465 *head = tmp->next;
466 command_free(tmp);
467 }
468
469 return ERROR_OK;
470 }
471
472 int unregister_command(struct command_context *context,
473 struct command *parent, const char *name)
474 {
475 if ((!context) || (!name))
476 return ERROR_COMMAND_SYNTAX_ERROR;
477
478 struct command *p = NULL;
479 struct command **head = command_list_for_parent(context, parent);
480 for (struct command *c = *head; NULL != c; p = c, c = c->next) {
481 if (strcmp(name, c->name) != 0)
482 continue;
483
484 if (p)
485 p->next = c->next;
486 else
487 *head = c->next;
488
489 command_free(c);
490 return ERROR_OK;
491 }
492
493 return ERROR_OK;
494 }
495
496 void command_set_handler_data(struct command *c, void *p)
497 {
498 if (NULL != c->handler || NULL != c->jim_handler)
499 c->jim_handler_data = p;
500 for (struct command *cc = c->children; NULL != cc; cc = cc->next)
501 command_set_handler_data(cc, p);
502 }
503
504 void command_output_text(struct command_context *context, const char *data)
505 {
506 if (context && context->output_handler && data)
507 context->output_handler(context, data);
508 }
509
510 void command_print_sameline(struct command_context *context, const char *format, ...)
511 {
512 char *string;
513
514 va_list ap;
515 va_start(ap, format);
516
517 string = alloc_vprintf(format, ap);
518 if (string != NULL) {
519 /* we want this collected in the log + we also want to pick it up as a tcl return
520 * value.
521 *
522 * The latter bit isn't precisely neat, but will do for now.
523 */
524 LOG_USER_N("%s", string);
525 /* We already printed it above
526 * command_output_text(context, string); */
527 free(string);
528 }
529
530 va_end(ap);
531 }
532
533 void command_print(struct command_context *context, const char *format, ...)
534 {
535 char *string;
536
537 va_list ap;
538 va_start(ap, format);
539
540 string = alloc_vprintf(format, ap);
541 if (string != NULL) {
542 strcat(string, "\n"); /* alloc_vprintf guaranteed the buffer to be at least one
543 *char longer */
544 /* we want this collected in the log + we also want to pick it up as a tcl return
545 * value.
546 *
547 * The latter bit isn't precisely neat, but will do for now.
548 */
549 LOG_USER_N("%s", string);
550 /* We already printed it above
551 * command_output_text(context, string); */
552 free(string);
553 }
554
555 va_end(ap);
556 }
557
558 static char *__command_name(struct command *c, char delim, unsigned extra)
559 {
560 char *name;
561 unsigned len = strlen(c->name);
562 if (NULL == c->parent) {
563 /* allocate enough for the name, child names, and '\0' */
564 name = malloc(len + extra + 1);
565 strcpy(name, c->name);
566 } else {
567 /* parent's extra must include both the space and name */
568 name = __command_name(c->parent, delim, 1 + len + extra);
569 char dstr[2] = { delim, 0 };
570 strcat(name, dstr);
571 strcat(name, c->name);
572 }
573 return name;
574 }
575
576 char *command_name(struct command *c, char delim)
577 {
578 return __command_name(c, delim, 0);
579 }
580
581 static bool command_can_run(struct command_context *cmd_ctx, struct command *c)
582 {
583 return c->mode == COMMAND_ANY || c->mode == cmd_ctx->mode;
584 }
585
586 static int run_command(struct command_context *context,
587 struct command *c, const char *words[], unsigned num_words)
588 {
589 if (!command_can_run(context, c)) {
590 /* Many commands may be run only before/after 'init' */
591 const char *when;
592 switch (c->mode) {
593 case COMMAND_CONFIG:
594 when = "before";
595 break;
596 case COMMAND_EXEC:
597 when = "after";
598 break;
599 /* handle the impossible with humor; it guarantees a bug report! */
600 default:
601 when = "if Cthulhu is summoned by";
602 break;
603 }
604 LOG_ERROR("The '%s' command must be used %s 'init'.",
605 c->name, when);
606 return ERROR_FAIL;
607 }
608
609 struct command_invocation cmd = {
610 .ctx = context,
611 .current = c,
612 .name = c->name,
613 .argc = num_words - 1,
614 .argv = words + 1,
615 };
616 int retval = c->handler(&cmd);
617 if (retval == ERROR_COMMAND_SYNTAX_ERROR) {
618 /* Print help for command */
619 char *full_name = command_name(c, ' ');
620 if (NULL != full_name) {
621 command_run_linef(context, "usage %s", full_name);
622 free(full_name);
623 } else
624 retval = -ENOMEM;
625 } else if (retval == ERROR_COMMAND_CLOSE_CONNECTION) {
626 /* just fall through for a shutdown request */
627 } else if (retval != ERROR_OK) {
628 /* we do not print out an error message because the command *should*
629 * have printed out an error
630 */
631 LOG_DEBUG("Command failed with error code %d", retval);
632 }
633
634 return retval;
635 }
636
637 int command_run_line(struct command_context *context, char *line)
638 {
639 /* all the parent commands have been registered with the interpreter
640 * so, can just evaluate the line as a script and check for
641 * results
642 */
643 /* run the line thru a script engine */
644 int retval = ERROR_FAIL;
645 int retcode;
646 /* Beware! This code needs to be reentrant. It is also possible
647 * for OpenOCD commands to be invoked directly from Tcl. This would
648 * happen when the Jim Tcl interpreter is provided by eCos for
649 * instance.
650 */
651 Jim_Interp *interp = context->interp;
652 Jim_DeleteAssocData(interp, "context");
653 retcode = Jim_SetAssocData(interp, "context", NULL, context);
654 if (retcode == JIM_OK) {
655 /* associated the return value */
656 Jim_DeleteAssocData(interp, "retval");
657 retcode = Jim_SetAssocData(interp, "retval", NULL, &retval);
658 if (retcode == JIM_OK) {
659 retcode = Jim_Eval_Named(interp, line, 0, 0);
660
661 Jim_DeleteAssocData(interp, "retval");
662 }
663 Jim_DeleteAssocData(interp, "context");
664 }
665 if (retcode == JIM_ERR) {
666 if (retval != ERROR_COMMAND_CLOSE_CONNECTION) {
667 /* We do not print the connection closed error message */
668 Jim_MakeErrorMessage(interp);
669 LOG_USER("%s", Jim_GetString(Jim_GetResult(interp), NULL));
670 }
671 if (retval == ERROR_OK) {
672 /* It wasn't a low level OpenOCD command that failed */
673 return ERROR_FAIL;
674 }
675 return retval;
676 } else if (retcode == JIM_EXIT) {
677 /* ignore.
678 * exit(Jim_GetExitCode(interp)); */
679 } else {
680 const char *result;
681 int reslen;
682
683 result = Jim_GetString(Jim_GetResult(interp), &reslen);
684 if (reslen > 0) {
685 int i;
686 char buff[256 + 1];
687 for (i = 0; i < reslen; i += 256) {
688 int chunk;
689 chunk = reslen - i;
690 if (chunk > 256)
691 chunk = 256;
692 strncpy(buff, result + i, chunk);
693 buff[chunk] = 0;
694 LOG_USER_N("%s", buff);
695 }
696 LOG_USER_N("\n");
697 }
698 retval = ERROR_OK;
699 }
700 return retval;
701 }
702
703 int command_run_linef(struct command_context *context, const char *format, ...)
704 {
705 int retval = ERROR_FAIL;
706 char *string;
707 va_list ap;
708 va_start(ap, format);
709 string = alloc_vprintf(format, ap);
710 if (string != NULL) {
711 retval = command_run_line(context, string);
712 free(string);
713 }
714 va_end(ap);
715 return retval;
716 }
717
718 void command_set_output_handler(struct command_context *context,
719 command_output_handler_t output_handler, void *priv)
720 {
721 context->output_handler = output_handler;
722 context->output_handler_priv = priv;
723 }
724
725 struct command_context *copy_command_context(struct command_context *context)
726 {
727 struct command_context *copy_context = malloc(sizeof(struct command_context));
728
729 *copy_context = *context;
730
731 return copy_context;
732 }
733
734 void command_done(struct command_context *cmd_ctx)
735 {
736 if (NULL == cmd_ctx)
737 return;
738
739 free(cmd_ctx);
740 }
741
742 /* find full path to file */
743 static int jim_find(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
744 {
745 if (argc != 2)
746 return JIM_ERR;
747 const char *file = Jim_GetString(argv[1], NULL);
748 char *full_path = find_file(file);
749 if (full_path == NULL)
750 return JIM_ERR;
751 Jim_Obj *result = Jim_NewStringObj(interp, full_path, strlen(full_path));
752 free(full_path);
753
754 Jim_SetResult(interp, result);
755 return JIM_OK;
756 }
757
758 COMMAND_HANDLER(jim_echo)
759 {
760 if (CMD_ARGC == 2 && !strcmp(CMD_ARGV[0], "-n")) {
761 LOG_USER_N("%s", CMD_ARGV[1]);
762 return JIM_OK;
763 }
764 if (CMD_ARGC != 1)
765 return JIM_ERR;
766 LOG_USER("%s", CMD_ARGV[0]);
767 return JIM_OK;
768 }
769
770 /* Capture progress output and return as tcl return value. If the
771 * progress output was empty, return tcl return value.
772 */
773 static int jim_capture(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
774 {
775 if (argc != 2)
776 return JIM_ERR;
777
778 struct log_capture_state *state = command_log_capture_start(interp);
779
780 /* disable polling during capture. This avoids capturing output
781 * from polling.
782 *
783 * This is necessary in order to avoid accidentally getting a non-empty
784 * string for tcl fn's.
785 */
786 bool save_poll = jtag_poll_get_enabled();
787
788 jtag_poll_set_enabled(false);
789
790 const char *str = Jim_GetString(argv[1], NULL);
791 int retcode = Jim_Eval_Named(interp, str, __THIS__FILE__, __LINE__);
792
793 jtag_poll_set_enabled(save_poll);
794
795 command_log_capture_finish(state);
796
797 return retcode;
798 }
799
800 static COMMAND_HELPER(command_help_find, struct command *head,
801 struct command **out)
802 {
803 if (0 == CMD_ARGC)
804 return ERROR_COMMAND_SYNTAX_ERROR;
805 *out = command_find(head, CMD_ARGV[0]);
806 if (NULL == *out && strncmp(CMD_ARGV[0], "ocd_", 4) == 0)
807 *out = command_find(head, CMD_ARGV[0] + 4);
808 if (NULL == *out)
809 return ERROR_COMMAND_SYNTAX_ERROR;
810 if (--CMD_ARGC == 0)
811 return ERROR_OK;
812 CMD_ARGV++;
813 return CALL_COMMAND_HANDLER(command_help_find, (*out)->children, out);
814 }
815
816 static COMMAND_HELPER(command_help_show, struct command *c, unsigned n,
817 bool show_help, const char *match);
818
819 static COMMAND_HELPER(command_help_show_list, struct command *head, unsigned n,
820 bool show_help, const char *match)
821 {
822 for (struct command *c = head; NULL != c; c = c->next)
823 CALL_COMMAND_HANDLER(command_help_show, c, n, show_help, match);
824 return ERROR_OK;
825 }
826
827 #define HELP_LINE_WIDTH(_n) (int)(76 - (2 * _n))
828
829 static void command_help_show_indent(unsigned n)
830 {
831 for (unsigned i = 0; i < n; i++)
832 LOG_USER_N(" ");
833 }
834 static void command_help_show_wrap(const char *str, unsigned n, unsigned n2)
835 {
836 const char *cp = str, *last = str;
837 while (*cp) {
838 const char *next = last;
839 do {
840 cp = next;
841 do {
842 next++;
843 } while (*next != ' ' && *next != '\t' && *next != '\0');
844 } while ((next - last < HELP_LINE_WIDTH(n)) && *next != '\0');
845 if (next - last < HELP_LINE_WIDTH(n))
846 cp = next;
847 command_help_show_indent(n);
848 LOG_USER("%.*s", (int)(cp - last), last);
849 last = cp + 1;
850 n = n2;
851 }
852 }
853
854 static COMMAND_HELPER(command_help_show, struct command *c, unsigned n,
855 bool show_help, const char *match)
856 {
857 char *cmd_name = command_name(c, ' ');
858 if (NULL == cmd_name)
859 return -ENOMEM;
860
861 /* If the match string occurs anywhere, we print out
862 * stuff for this command. */
863 bool is_match = (strstr(cmd_name, match) != NULL) ||
864 ((c->usage != NULL) && (strstr(c->usage, match) != NULL)) ||
865 ((c->help != NULL) && (strstr(c->help, match) != NULL));
866
867 if (is_match) {
868 command_help_show_indent(n);
869 LOG_USER_N("%s", cmd_name);
870 }
871 free(cmd_name);
872
873 if (is_match) {
874 if (c->usage) {
875 LOG_USER_N(" ");
876 command_help_show_wrap(c->usage, 0, n + 5);
877 } else
878 LOG_USER_N("\n");
879 }
880
881 if (is_match && show_help) {
882 char *msg;
883
884 /* Normal commands are runtime-only; highlight exceptions */
885 if (c->mode != COMMAND_EXEC) {
886 const char *stage_msg = "";
887
888 switch (c->mode) {
889 case COMMAND_CONFIG:
890 stage_msg = " (configuration command)";
891 break;
892 case COMMAND_ANY:
893 stage_msg = " (command valid any time)";
894 break;
895 default:
896 stage_msg = " (?mode error?)";
897 break;
898 }
899 msg = alloc_printf("%s%s", c->help ? : "", stage_msg);
900 } else
901 msg = alloc_printf("%s", c->help ? : "");
902
903 if (NULL != msg) {
904 command_help_show_wrap(msg, n + 3, n + 3);
905 free(msg);
906 } else
907 return -ENOMEM;
908 }
909
910 if (++n > 5) {
911 LOG_ERROR("command recursion exceeded");
912 return ERROR_FAIL;
913 }
914
915 return CALL_COMMAND_HANDLER(command_help_show_list,
916 c->children, n, show_help, match);
917 }
918
919 COMMAND_HANDLER(handle_help_command)
920 {
921 bool full = strcmp(CMD_NAME, "help") == 0;
922 int retval;
923 struct command *c = CMD_CTX->commands;
924 char *match = NULL;
925
926 if (CMD_ARGC == 0)
927 match = "";
928 else if (CMD_ARGC >= 1) {
929 unsigned i;
930
931 for (i = 0; i < CMD_ARGC; ++i) {
932 if (NULL != match) {
933 char *prev = match;
934
935 match = alloc_printf("%s %s", match, CMD_ARGV[i]);
936 free(prev);
937 if (NULL == match) {
938 LOG_ERROR("unable to build search string");
939 return -ENOMEM;
940 }
941 } else {
942 match = alloc_printf("%s", CMD_ARGV[i]);
943 if (NULL == match) {
944 LOG_ERROR("unable to build search string");
945 return -ENOMEM;
946 }
947 }
948 }
949 } else
950 return ERROR_COMMAND_SYNTAX_ERROR;
951
952 retval = CALL_COMMAND_HANDLER(command_help_show_list,
953 c, 0, full, match);
954
955 if (CMD_ARGC >= 1)
956 free(match);
957 return retval;
958 }
959
960 static int command_unknown_find(unsigned argc, Jim_Obj *const *argv,
961 struct command *head, struct command **out, bool top_level)
962 {
963 if (0 == argc)
964 return argc;
965 const char *cmd_name = Jim_GetString(argv[0], NULL);
966 struct command *c = command_find(head, cmd_name);
967 if (NULL == c && top_level && strncmp(cmd_name, "ocd_", 4) == 0)
968 c = command_find(head, cmd_name + 4);
969 if (NULL == c)
970 return argc;
971 *out = c;
972 return command_unknown_find(--argc, ++argv, (*out)->children, out, false);
973 }
974
975 static int command_unknown(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
976 {
977 const char *cmd_name = Jim_GetString(argv[0], NULL);
978 if (strcmp(cmd_name, "unknown") == 0) {
979 if (argc == 1)
980 return JIM_OK;
981 argc--;
982 argv++;
983 }
984 script_debug(interp, cmd_name, argc, argv);
985
986 struct command_context *cmd_ctx = current_command_context(interp);
987 struct command *c = cmd_ctx->commands;
988 int remaining = command_unknown_find(argc, argv, c, &c, true);
989 /* if nothing could be consumed, then it's really an unknown command */
990 if (remaining == argc) {
991 const char *cmd = Jim_GetString(argv[0], NULL);
992 LOG_ERROR("Unknown command:\n %s", cmd);
993 return JIM_OK;
994 }
995
996 bool found = true;
997 Jim_Obj *const *start;
998 unsigned count;
999 if (c->handler || c->jim_handler) {
1000 /* include the command name in the list */
1001 count = remaining + 1;
1002 start = argv + (argc - remaining - 1);
1003 } else {
1004 c = command_find(cmd_ctx->commands, "usage");
1005 if (NULL == c) {
1006 LOG_ERROR("unknown command, but usage is missing too");
1007 return JIM_ERR;
1008 }
1009 count = argc - remaining;
1010 start = argv;
1011 found = false;
1012 }
1013 /* pass the command through to the intended handler */
1014 if (c->jim_handler) {
1015 interp->cmdPrivData = c->jim_handler_data;
1016 return (*c->jim_handler)(interp, count, start);
1017 }
1018
1019 return script_command_run(interp, count, start, c, found);
1020 }
1021
1022 static int jim_command_mode(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
1023 {
1024 struct command_context *cmd_ctx = current_command_context(interp);
1025 enum command_mode mode;
1026
1027 if (argc > 1) {
1028 struct command *c = cmd_ctx->commands;
1029 int remaining = command_unknown_find(argc - 1, argv + 1, c, &c, true);
1030 /* if nothing could be consumed, then it's an unknown command */
1031 if (remaining == argc - 1) {
1032 Jim_SetResultString(interp, "unknown", -1);
1033 return JIM_OK;
1034 }
1035 mode = c->mode;
1036 } else
1037 mode = cmd_ctx->mode;
1038
1039 const char *mode_str;
1040 switch (mode) {
1041 case COMMAND_ANY:
1042 mode_str = "any";
1043 break;
1044 case COMMAND_CONFIG:
1045 mode_str = "config";
1046 break;
1047 case COMMAND_EXEC:
1048 mode_str = "exec";
1049 break;
1050 default:
1051 mode_str = "unknown";
1052 break;
1053 }
1054 Jim_SetResultString(interp, mode_str, -1);
1055 return JIM_OK;
1056 }
1057
1058 static int jim_command_type(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
1059 {
1060 if (1 == argc)
1061 return JIM_ERR;
1062
1063 struct command_context *cmd_ctx = current_command_context(interp);
1064 struct command *c = cmd_ctx->commands;
1065 int remaining = command_unknown_find(argc - 1, argv + 1, c, &c, true);
1066 /* if nothing could be consumed, then it's an unknown command */
1067 if (remaining == argc - 1) {
1068 Jim_SetResultString(interp, "unknown", -1);
1069 return JIM_OK;
1070 }
1071
1072 if (c->jim_handler)
1073 Jim_SetResultString(interp, "native", -1);
1074 else if (c->handler)
1075 Jim_SetResultString(interp, "simple", -1);
1076 else
1077 Jim_SetResultString(interp, "group", -1);
1078
1079 return JIM_OK;
1080 }
1081
1082 int help_add_command(struct command_context *cmd_ctx, struct command *parent,
1083 const char *cmd_name, const char *help_text, const char *usage)
1084 {
1085 struct command **head = command_list_for_parent(cmd_ctx, parent);
1086 struct command *nc = command_find(*head, cmd_name);
1087 if (NULL == nc) {
1088 /* add a new command with help text */
1089 struct command_registration cr = {
1090 .name = cmd_name,
1091 .mode = COMMAND_ANY,
1092 .help = help_text,
1093 .usage = usage,
1094 };
1095 nc = register_command(cmd_ctx, parent, &cr);
1096 if (NULL == nc) {
1097 LOG_ERROR("failed to add '%s' help text", cmd_name);
1098 return ERROR_FAIL;
1099 }
1100 LOG_DEBUG("added '%s' help text", cmd_name);
1101 return ERROR_OK;
1102 }
1103 if (help_text) {
1104 bool replaced = false;
1105 if (nc->help) {
1106 free((void *)nc->help);
1107 replaced = true;
1108 }
1109 nc->help = strdup(help_text);
1110 if (replaced)
1111 LOG_INFO("replaced existing '%s' help", cmd_name);
1112 else
1113 LOG_DEBUG("added '%s' help text", cmd_name);
1114 }
1115 if (usage) {
1116 bool replaced = false;
1117 if (nc->usage) {
1118 free((void *)nc->usage);
1119 replaced = true;
1120 }
1121 nc->usage = strdup(usage);
1122 if (replaced)
1123 LOG_INFO("replaced existing '%s' usage", cmd_name);
1124 else
1125 LOG_DEBUG("added '%s' usage text", cmd_name);
1126 }
1127 return ERROR_OK;
1128 }
1129
1130 COMMAND_HANDLER(handle_help_add_command)
1131 {
1132 if (CMD_ARGC < 2) {
1133 LOG_ERROR("%s: insufficient arguments", CMD_NAME);
1134 return ERROR_COMMAND_SYNTAX_ERROR;
1135 }
1136
1137 /* save help text and remove it from argument list */
1138 const char *str = CMD_ARGV[--CMD_ARGC];
1139 const char *help = !strcmp(CMD_NAME, "add_help_text") ? str : NULL;
1140 const char *usage = !strcmp(CMD_NAME, "add_usage_text") ? str : NULL;
1141 if (!help && !usage) {
1142 LOG_ERROR("command name '%s' is unknown", CMD_NAME);
1143 return ERROR_COMMAND_SYNTAX_ERROR;
1144 }
1145 /* likewise for the leaf command name */
1146 const char *cmd_name = CMD_ARGV[--CMD_ARGC];
1147
1148 struct command *c = NULL;
1149 if (CMD_ARGC > 0) {
1150 c = CMD_CTX->commands;
1151 int retval = CALL_COMMAND_HANDLER(command_help_find, c, &c);
1152 if (ERROR_OK != retval)
1153 return retval;
1154 }
1155 return help_add_command(CMD_CTX, c, cmd_name, help, usage);
1156 }
1157
1158 /* sleep command sleeps for <n> milliseconds
1159 * this is useful in target startup scripts
1160 */
1161 COMMAND_HANDLER(handle_sleep_command)
1162 {
1163 bool busy = false;
1164 if (CMD_ARGC == 2) {
1165 if (strcmp(CMD_ARGV[1], "busy") == 0)
1166 busy = true;
1167 else
1168 return ERROR_COMMAND_SYNTAX_ERROR;
1169 } else if (CMD_ARGC < 1 || CMD_ARGC > 2)
1170 return ERROR_COMMAND_SYNTAX_ERROR;
1171
1172 unsigned long duration = 0;
1173 int retval = parse_ulong(CMD_ARGV[0], &duration);
1174 if (ERROR_OK != retval)
1175 return retval;
1176
1177 if (!busy) {
1178 long long then = timeval_ms();
1179 while (timeval_ms() - then < (long long)duration) {
1180 target_call_timer_callbacks_now();
1181 usleep(1000);
1182 }
1183 } else
1184 busy_sleep(duration);
1185
1186 return ERROR_OK;
1187 }
1188
1189 static const struct command_registration command_subcommand_handlers[] = {
1190 {
1191 .name = "mode",
1192 .mode = COMMAND_ANY,
1193 .jim_handler = jim_command_mode,
1194 .usage = "[command_name ...]",
1195 .help = "Returns the command modes allowed by a command:"
1196 "'any', 'config', or 'exec'. If no command is"
1197 "specified, returns the current command mode. "
1198 "Returns 'unknown' if an unknown command is given. "
1199 "Command can be multiple tokens.",
1200 },
1201 {
1202 .name = "type",
1203 .mode = COMMAND_ANY,
1204 .jim_handler = jim_command_type,
1205 .usage = "command_name [...]",
1206 .help = "Returns the type of built-in command:"
1207 "'native', 'simple', 'group', or 'unknown'. "
1208 "Command can be multiple tokens.",
1209 },
1210 COMMAND_REGISTRATION_DONE
1211 };
1212
1213 static const struct command_registration command_builtin_handlers[] = {
1214 {
1215 .name = "echo",
1216 .handler = jim_echo,
1217 .mode = COMMAND_ANY,
1218 .help = "Logs a message at \"user\" priority. "
1219 "Output message to stdout. "
1220 "Option \"-n\" suppresses trailing newline",
1221 .usage = "[-n] string",
1222 },
1223 {
1224 .name = "add_help_text",
1225 .handler = handle_help_add_command,
1226 .mode = COMMAND_ANY,
1227 .help = "Add new command help text; "
1228 "Command can be multiple tokens.",
1229 .usage = "command_name helptext_string",
1230 },
1231 {
1232 .name = "add_usage_text",
1233 .handler = handle_help_add_command,
1234 .mode = COMMAND_ANY,
1235 .help = "Add new command usage text; "
1236 "command can be multiple tokens.",
1237 .usage = "command_name usage_string",
1238 },
1239 {
1240 .name = "sleep",
1241 .handler = handle_sleep_command,
1242 .mode = COMMAND_ANY,
1243 .help = "Sleep for specified number of milliseconds. "
1244 "\"busy\" will busy wait instead (avoid this).",
1245 .usage = "milliseconds ['busy']",
1246 },
1247 {
1248 .name = "help",
1249 .handler = handle_help_command,
1250 .mode = COMMAND_ANY,
1251 .help = "Show full command help; "
1252 "command can be multiple tokens.",
1253 .usage = "[command_name]",
1254 },
1255 {
1256 .name = "usage",
1257 .handler = handle_help_command,
1258 .mode = COMMAND_ANY,
1259 .help = "Show basic command usage; "
1260 "command can be multiple tokens.",
1261 .usage = "[command_name]",
1262 },
1263 {
1264 .name = "command",
1265 .mode = COMMAND_ANY,
1266 .help = "core command group (introspection)",
1267 .chain = command_subcommand_handlers,
1268 },
1269 COMMAND_REGISTRATION_DONE
1270 };
1271
1272 struct command_context *command_init(const char *startup_tcl, Jim_Interp *interp)
1273 {
1274 struct command_context *context = malloc(sizeof(struct command_context));
1275 const char *HostOs;
1276
1277 context->mode = COMMAND_EXEC;
1278 context->commands = NULL;
1279 context->current_target = 0;
1280 context->output_handler = NULL;
1281 context->output_handler_priv = NULL;
1282
1283 /* Create a jim interpreter if we were not handed one */
1284 if (interp == NULL) {
1285 /* Create an interpreter */
1286 interp = Jim_CreateInterp();
1287 /* Add all the Jim core commands */
1288 Jim_RegisterCoreCommands(interp);
1289 Jim_InitStaticExtensions(interp);
1290 }
1291
1292 context->interp = interp;
1293
1294 /* Stick to lowercase for HostOS strings. */
1295 #if defined(_MSC_VER)
1296 /* WinXX - is generic, the forward
1297 * looking problem is this:
1298 *
1299 * "win32" or "win64"
1300 *
1301 * "winxx" is generic.
1302 */
1303 HostOs = "winxx";
1304 #elif defined(__linux__)
1305 HostOs = "linux";
1306 #elif defined(__APPLE__) || defined(__DARWIN__)
1307 HostOs = "darwin";
1308 #elif defined(__CYGWIN__)
1309 HostOs = "cygwin";
1310 #elif defined(__MINGW32__)
1311 HostOs = "mingw32";
1312 #elif defined(__ECOS)
1313 HostOs = "ecos";
1314 #elif defined(__FreeBSD__)
1315 HostOs = "freebsd";
1316 #elif defined(__NetBSD__)
1317 HostOs = "netbsd";
1318 #elif defined(__OpenBSD__)
1319 HostOs = "openbsd";
1320 #else
1321 #warning "Unrecognized host OS..."
1322 HostOs = "other";
1323 #endif
1324 Jim_SetGlobalVariableStr(interp, "ocd_HOSTOS",
1325 Jim_NewStringObj(interp, HostOs, strlen(HostOs)));
1326
1327 Jim_CreateCommand(interp, "ocd_find", jim_find, NULL, NULL);
1328 Jim_CreateCommand(interp, "capture", jim_capture, NULL, NULL);
1329
1330 register_commands(context, NULL, command_builtin_handlers);
1331
1332 Jim_SetAssocData(interp, "context", NULL, context);
1333 if (Jim_Eval_Named(interp, startup_tcl, "embedded:startup.tcl", 1) == JIM_ERR) {
1334 LOG_ERROR("Failed to run startup.tcl (embedded into OpenOCD)");
1335 Jim_MakeErrorMessage(interp);
1336 LOG_USER_N("%s", Jim_GetString(Jim_GetResult(interp), NULL));
1337 exit(-1);
1338 }
1339 Jim_DeleteAssocData(interp, "context");
1340
1341 return context;
1342 }
1343
1344 int command_context_mode(struct command_context *cmd_ctx, enum command_mode mode)
1345 {
1346 if (!cmd_ctx)
1347 return ERROR_COMMAND_SYNTAX_ERROR;
1348
1349 cmd_ctx->mode = mode;
1350 return ERROR_OK;
1351 }
1352
1353 void process_jim_events(struct command_context *cmd_ctx)
1354 {
1355 static int recursion;
1356 if (recursion)
1357 return;
1358
1359 recursion++;
1360 Jim_ProcessEvents(cmd_ctx->interp, JIM_ALL_EVENTS | JIM_DONT_WAIT);
1361 recursion--;
1362 }
1363
1364 #define DEFINE_PARSE_NUM_TYPE(name, type, func, min, max) \
1365 int parse ## name(const char *str, type * ul) \
1366 { \
1367 if (!*str) { \
1368 LOG_ERROR("Invalid command argument"); \
1369 return ERROR_COMMAND_ARGUMENT_INVALID; \
1370 } \
1371 char *end; \
1372 *ul = func(str, &end, 0); \
1373 if (*end) { \
1374 LOG_ERROR("Invalid command argument"); \
1375 return ERROR_COMMAND_ARGUMENT_INVALID; \
1376 } \
1377 if ((max == *ul) && (ERANGE == errno)) { \
1378 LOG_ERROR("Argument overflow"); \
1379 return ERROR_COMMAND_ARGUMENT_OVERFLOW; \
1380 } \
1381 if (min && (min == *ul) && (ERANGE == errno)) { \
1382 LOG_ERROR("Argument underflow"); \
1383 return ERROR_COMMAND_ARGUMENT_UNDERFLOW; \
1384 } \
1385 return ERROR_OK; \
1386 }
1387 DEFINE_PARSE_NUM_TYPE(_ulong, unsigned long, strtoul, 0, ULONG_MAX)
1388 DEFINE_PARSE_NUM_TYPE(_ullong, unsigned long long, strtoull, 0, ULLONG_MAX)
1389 DEFINE_PARSE_NUM_TYPE(_long, long, strtol, LONG_MIN, LONG_MAX)
1390 DEFINE_PARSE_NUM_TYPE(_llong, long long, strtoll, LLONG_MIN, LLONG_MAX)
1391
1392 #define DEFINE_PARSE_WRAPPER(name, type, min, max, functype, funcname) \
1393 int parse ## name(const char *str, type * ul) \
1394 { \
1395 functype n; \
1396 int retval = parse ## funcname(str, &n); \
1397 if (ERROR_OK != retval) \
1398 return retval; \
1399 if (n > max) \
1400 return ERROR_COMMAND_ARGUMENT_OVERFLOW; \
1401 if (min) \
1402 return ERROR_COMMAND_ARGUMENT_UNDERFLOW; \
1403 *ul = n; \
1404 return ERROR_OK; \
1405 }
1406
1407 #define DEFINE_PARSE_ULONG(name, type, min, max) \
1408 DEFINE_PARSE_WRAPPER(name, type, min, max, unsigned long, _ulong)
1409 DEFINE_PARSE_ULONG(_uint, unsigned, 0, UINT_MAX)
1410 DEFINE_PARSE_ULONG(_u32, uint32_t, 0, UINT32_MAX)
1411 DEFINE_PARSE_ULONG(_u16, uint16_t, 0, UINT16_MAX)
1412 DEFINE_PARSE_ULONG(_u8, uint8_t, 0, UINT8_MAX)
1413
1414 #define DEFINE_PARSE_LONG(name, type, min, max) \
1415 DEFINE_PARSE_WRAPPER(name, type, min, max, long, _long)
1416 DEFINE_PARSE_LONG(_int, int, n < INT_MIN, INT_MAX)
1417 DEFINE_PARSE_LONG(_s32, int32_t, n < INT32_MIN, INT32_MAX)
1418 DEFINE_PARSE_LONG(_s16, int16_t, n < INT16_MIN, INT16_MAX)
1419 DEFINE_PARSE_LONG(_s8, int8_t, n < INT8_MIN, INT8_MAX)
1420
1421 static int command_parse_bool(const char *in, bool *out,
1422 const char *on, const char *off)
1423 {
1424 if (strcasecmp(in, on) == 0)
1425 *out = true;
1426 else if (strcasecmp(in, off) == 0)
1427 *out = false;
1428 else
1429 return ERROR_COMMAND_SYNTAX_ERROR;
1430 return ERROR_OK;
1431 }
1432
1433 int command_parse_bool_arg(const char *in, bool *out)
1434 {
1435 if (command_parse_bool(in, out, "on", "off") == ERROR_OK)
1436 return ERROR_OK;
1437 if (command_parse_bool(in, out, "enable", "disable") == ERROR_OK)
1438 return ERROR_OK;
1439 if (command_parse_bool(in, out, "true", "false") == ERROR_OK)
1440 return ERROR_OK;
1441 if (command_parse_bool(in, out, "yes", "no") == ERROR_OK)
1442 return ERROR_OK;
1443 if (command_parse_bool(in, out, "1", "0") == ERROR_OK)
1444 return ERROR_OK;
1445 return ERROR_COMMAND_SYNTAX_ERROR;
1446 }
1447
1448 COMMAND_HELPER(handle_command_parse_bool, bool *out, const char *label)
1449 {
1450 switch (CMD_ARGC) {
1451 case 1: {
1452 const char *in = CMD_ARGV[0];
1453 if (command_parse_bool_arg(in, out) != ERROR_OK) {
1454 LOG_ERROR("%s: argument '%s' is not valid", CMD_NAME, in);
1455 return ERROR_COMMAND_SYNTAX_ERROR;
1456 }
1457 /* fall through */
1458 }
1459 case 0:
1460 LOG_INFO("%s is %s", label, *out ? "enabled" : "disabled");
1461 break;
1462 default:
1463 return ERROR_COMMAND_SYNTAX_ERROR;
1464 }
1465 return ERROR_OK;
1466 }
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