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Date:: Sat Mar 5 11:02:30 2022 UTC
Message:: fix argc check argc can be -1 if we called noarg with argc=0, because optind is 1.
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1 /*
2  * Copyright (c) 2022 Omar Polo <op@openbsd.org>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #include <sys/types.h>
18 #include <sys/socket.h>
19 #include <sys/queue.h>
20 #include <sys/uio.h>
21 #include <sys/un.h>
22 
23 #include <errno.h>
24 #include <event.h>
25 #include <fcntl.h>
26 #include <limits.h>
27 #include <sndio.h>
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <stdint.h>
31 #include <string.h>
32 #include <syslog.h>
33 #include <unistd.h>
34 #include <imsg.h>
35 
36 #include "amused.h"
37 #include "log.h"
38 #include "playlist.h"
39 #include "xmalloc.h"
40 
41 static struct imsgbuf *ibuf;
42 
43 int	ctl_noarg(struct parse_result *, int, char **);
44 int	ctl_add(struct parse_result *, int, char **);
45 int	ctl_show(struct parse_result *, int, char **);
46 int	ctl_load(struct parse_result *, int, char **);
47 int	ctl_jump(struct parse_result *, int, char **);
48 int	ctl_repeat(struct parse_result *, int, char **);
49 
50 struct ctl_command ctl_commands[] = {
51 	{ "play",	PLAY,		ctl_noarg,	"" },
52 	{ "pause",	PAUSE,		ctl_noarg,	"" },
53 	{ "toggle",	TOGGLE,		ctl_noarg,	"" },
54 	{ "stop",	STOP,		ctl_noarg,	"" },
55 	{ "restart",	RESTART,	ctl_noarg,	"" },
56 	{ "add",	ADD,		ctl_add,	"files...", 1 },
57 	{ "flush",	FLUSH,		ctl_noarg,	"" },
58 	{ "show",	SHOW,		ctl_show,	"[-p]" },
59 	{ "status",	STATUS,		ctl_noarg,	"" },
60 	{ "next",	NEXT,		ctl_noarg,	"" },
61 	{ "prev",	PREV,		ctl_noarg,	"" },
62 	{ "load",	LOAD,		ctl_load,	"[file]", 1 },
63 	{ "jump",	JUMP,		ctl_jump,	"pattern" },
64 	{ "repeat",	REPEAT,		ctl_repeat,	"one|all on|off" },
65 	{ "monitor",	MONITOR,	ctl_noarg,	"" },
66 	{ NULL },
67 };
68 
69 __dead void
70 usage(void)
71 {
72 	fprintf(stderr, "usage: %s [-dv] [-s socket]\n", getprogname());
73 	exit(1);
74 }
75 
76 static __dead void
77 ctl_usage(struct ctl_command *ctl)
78 {
79 	fprintf(stderr, "usage: %s [-v] [-s socket] %s %s\n", getprogname(),
80 	    ctl->name, ctl->usage);
81 	exit(1);
82 }
83 
84 static int
85 parse(int argc, char **argv)
86 {
87 	struct ctl_command	*ctl = NULL;
88 	struct parse_result	 res;
89 	const char		*argv0;
90 	int			 i, status;
91 
92 	memset(&res, 0, sizeof(res));
93 
94 	if ((argv0 = argv[0]) == NULL)
95 		argv0 = "status";
96 
97 	for (i = 0; ctl_commands[i].name != NULL; ++i) {
98 		if (strncmp(ctl_commands[i].name, argv0, strlen(argv0))
99 		    == 0) {
100 			if (ctl != NULL) {
101 				fprintf(stderr,
102 				    "ambiguous argument: %s\n", argv0);
103 				usage();
104 			}
105 			ctl = &ctl_commands[i];
106 		}
107 	}
108 
109 	if (ctl == NULL) {
110 		fprintf(stderr, "unknown argument: %s\n", argv[0]);
111 		usage();
112 	}
113 
114 	res.action = ctl->action;
115 	res.ctl = ctl;
116 
117 	if (!ctl->has_pledge) {
118 		/* pledge(2) default if command doesn't have its own */
119 		if (pledge("stdio", NULL) == -1)
120 			fatal("pledge");
121 	}
122 
123 	status = ctl->main(&res, argc, argv);
124 	close(ibuf->fd);
125 	free(ibuf);
126 	return status;
127 }
128 
129 static int
130 enqueue_tracks(char **files)
131 {
132 	char res[PATH_MAX];
133 	int enq = 0;
134 
135 	for (; *files != NULL; ++files) {
136 		memset(&res, 0, sizeof(res));
137 		if (realpath(*files, res) == NULL) {
138 			log_warn("realpath %s", *files);
139 			continue;
140 		}
141 
142 		imsg_compose(ibuf, IMSG_CTL_ADD, 0, 0, -1,
143 		    res, sizeof(res));
144 		enq++;
145 	}
146 
147 	return enq == 0;
148 }
149 
150 static int
151 jump_req(const char *arg)
152 {
153 	char path[PATH_MAX];
154 
155 	memset(path, 0, sizeof(path));
156 	strlcpy(path, arg, sizeof(path));
157 	imsg_compose(ibuf, IMSG_CTL_JUMP, 0, 0, -1, path, sizeof(path));
158 	return 0;
159 }
160 
161 static void
162 print_error_message(const char *prfx, struct imsg *imsg)
163 {
164 	size_t datalen;
165 	char *msg;
166 
167 	datalen = IMSG_DATA_SIZE(*imsg);
168 	if ((msg = calloc(1, datalen)) == NULL)
169 		fatal("calloc %zu", datalen);
170 	memcpy(msg, imsg->data, datalen);
171 	if (datalen == 0 || msg[datalen-1] != '\0')
172 		fatalx("malformed error message");
173 
174 	log_warnx("%s: %s", prfx, msg);
175 	free(msg);
176 }
177 
178 static int
179 show_add(struct imsg *imsg, int *ret, char ***files)
180 {
181 	if (**files == NULL) {
182 		log_warnx("received more replies than file sent");
183 		*ret = 1;
184 		return 1;
185 	}
186 
187 	if (imsg->hdr.type == IMSG_CTL_ERR)
188 		print_error_message(**files, imsg);
189 	else if (imsg->hdr.type == IMSG_CTL_ADD)
190 		log_debug("enqueued %s", **files);
191 	else
192 		fatalx("got invalid message %d", imsg->hdr.type);
193 
194 	(*files)++;
195 	return (**files) == NULL;
196 }
197 
198 static int
199 show_complete(struct parse_result *res, struct imsg *imsg, int *ret)
200 {
201 	struct player_status s;
202 	size_t datalen;
203 
204 	if (imsg->hdr.type == IMSG_CTL_ERR) {
205 		print_error_message("show failed", imsg);
206 		*ret = 1;
207 		return 1;
208 	}
209 
210 	datalen = IMSG_DATA_SIZE(*imsg);
211 	if (datalen == 0)
212 		return 1;
213 
214 	if (datalen != sizeof(s))
215 		fatalx("%s: data size mismatch", __func__);
216 	memcpy(&s, imsg->data, sizeof(s));
217 	if (s.path[sizeof(s.path)-1] != '\0')
218 		fatalx("%s: data corrupted?", __func__);
219 
220 	if (res->pretty)
221 		printf("%c ", s.status == STATE_PLAYING ? '>' : ' ');
222 	printf("%s\n", s.path);
223 	return 0;
224 }
225 
226 static int
227 show_status(struct imsg *imsg, int *ret)
228 {
229 	struct player_status s;
230 	size_t datalen;
231 
232 	if (imsg->hdr.type == IMSG_CTL_ERR) {
233 		print_error_message("show failed", imsg);
234 		*ret = 1;
235 		return 1;
236 	}
237 
238 	if (imsg->hdr.type != IMSG_CTL_STATUS)
239 		fatalx("%s: got wrong reply", __func__);
240 
241 	datalen = IMSG_DATA_SIZE(*imsg);
242 	if (datalen != sizeof(s))
243 		fatalx("%s: data size mismatch", __func__);
244 	memcpy(&s, imsg->data, sizeof(s));
245 	if (s.path[sizeof(s.path)-1] != '\0')
246 		fatalx("%s: data corrupted?", __func__);
247 
248 	switch (s.status) {
249 	case STATE_STOPPED:
250 		printf("stopped ");
251 		break;
252 	case STATE_PLAYING:
253 		printf("playing ");
254 		break;
255 	case STATE_PAUSED:
256 		printf("paused ");
257 		break;
258 	default:
259 		printf("unknown ");
260 		break;
261 	}
262 
263 	printf("%s\n", s.path);
264 	printf("repeat one %s\nrepeat all %s\n",
265 	    s.rp.repeat_one ? "on" : "off",
266 	    s.rp.repeat_all ? "on" : "off");
267 	return 1;
268 }
269 
270 static int
271 show_load(struct parse_result *res, struct imsg *imsg, int *ret)
272 {
273 	FILE		*f;
274 	const char	*file;
275 	char		*line = NULL;
276 	char		 path[PATH_MAX];
277 	size_t		 linesize = 0, i = 0;
278 	ssize_t		 linelen, curr = -1;
279 
280 	if (imsg->hdr.type == IMSG_CTL_ERR) {
281 		print_error_message("load failed", imsg);
282 		*ret = 1;
283 		return 1;
284 	}
285 
286 	if (imsg->hdr.type == IMSG_CTL_ADD)
287 		return 0;
288 
289 	if (imsg->hdr.type == IMSG_CTL_COMMIT)
290 		return 1;
291 
292 	if (imsg->hdr.type != IMSG_CTL_BEGIN)
293 		fatalx("got unexpected message %d", imsg->hdr.type);
294 
295 	if (res->file == NULL)
296 		f = stdin;
297 	else if ((f = fopen(res->file, "r")) == NULL) {
298 		log_warn("can't open %s", res->file);
299 		*ret = 1;
300 		return 1;
301 	}
302 
303 	while ((linelen = getline(&line, &linesize, f)) != -1) {
304 		if (linelen == 0)
305 			continue;
306 		line[linelen-1] = '\0';
307 		file = line;
308 		if (file[0] == '>' && file[1] == ' ') {
309 			file += 2;
310 			curr = i;
311 		}
312 		if (file[0] == ' ' && file[1] == ' ')
313 			file += 2;
314 
315 		memset(&path, 0, sizeof(path));
316 		if (realpath(file, path) == NULL) {
317 			log_warn("realpath %s", file);
318 			continue;
319 		}
320 
321 		i++;
322 		imsg_compose(ibuf, IMSG_CTL_ADD, 0, 0, -1,
323 		    path, sizeof(path));
324 	}
325 
326 	free(line);
327 	if (ferror(f))
328 		fatal("getline");
329 	fclose(f);
330 
331 	if (i == 0) {
332 		*ret = 1;
333 		return 1;
334 	}
335 
336 	imsg_compose(ibuf, IMSG_CTL_COMMIT, 0, 0, -1,
337 	    &curr, sizeof(curr));
338 	imsg_flush(ibuf);
339 	return 0;
340 }
341 
342 static int
343 show_monitor(struct imsg *imsg, int *ret)
344 {
345 	int type;
346 
347 	if (imsg->hdr.type != IMSG_CTL_MONITOR) {
348 		log_warnx("wrong message type received: %d",
349 		    imsg->hdr.type);
350 		*ret = 1;
351 		return 1;
352 	}
353 
354 	if (IMSG_DATA_SIZE(*imsg) != sizeof(type)) {
355 		log_warnx("size mismatch");
356 		*ret = 1;
357 		return 1;
358 	}
359 
360 	memcpy(&type, imsg->data, sizeof(type));
361 	switch (type) {
362 	case IMSG_CTL_PLAY:
363 		puts("play");
364 		break;
365 	case IMSG_CTL_TOGGLE_PLAY:
366 		puts("toggle");
367 		break;
368 	case IMSG_CTL_PAUSE:
369 		puts("pause");
370 		break;
371 	case IMSG_CTL_STOP:
372 		puts("stop");
373 		break;
374 	case IMSG_CTL_RESTART:
375 		puts("restart");
376 		break;
377 	case IMSG_CTL_FLUSH:
378 		puts("flush");
379 		break;
380 	case IMSG_CTL_NEXT:
381 		puts("next");
382 		break;
383 	case IMSG_CTL_PREV:
384 		puts("prev");
385 		break;
386 	case IMSG_CTL_JUMP:
387 		puts("jump");
388 		break;
389 	case IMSG_CTL_REPEAT:
390 		puts("repeat");
391 		break;
392 	case IMSG_CTL_ADD:
393 		puts("add");
394 		break;
395 	case IMSG_CTL_COMMIT:
396 		puts("load");
397 		break;
398 	default:
399 		puts("unknown");
400 		break;
401 	}
402 
403 	fflush(stdout);
404 	return 0;
405 }
406 
407 static int
408 ctlaction(struct parse_result *res)
409 {
410 	struct imsg imsg;
411 	ssize_t n;
412 	int ret = 0, done = 1;
413 	char **files;
414 
415 	switch (res->action) {
416 	case PLAY:
417 		imsg_compose(ibuf, IMSG_CTL_PLAY, 0, 0, -1, NULL, 0);
418 		if (verbose) {
419 			imsg_compose(ibuf, IMSG_CTL_STATUS, 0, 0, -1,
420 			    NULL, 0);
421 			done = 0;
422 		}
423 		break;
424 	case PAUSE:
425 		imsg_compose(ibuf, IMSG_CTL_PAUSE, 0, 0, -1, NULL, 0);
426 		break;
427 	case TOGGLE:
428 		imsg_compose(ibuf, IMSG_CTL_TOGGLE_PLAY, 0, 0, -1, NULL, 0);
429 		if (verbose) {
430 			imsg_compose(ibuf, IMSG_CTL_STATUS, 0, 0, -1,
431 			    NULL, 0);
432 			done = 0;
433 		}
434 		break;
435 	case STOP:
436 		imsg_compose(ibuf, IMSG_CTL_STOP, 0, 0, -1, NULL, 0);
437 		break;
438 	case RESTART:
439 		imsg_compose(ibuf, IMSG_CTL_RESTART, 0, 0, -1, NULL, 0);
440 		if (verbose) {
441 			imsg_compose(ibuf, IMSG_CTL_STATUS, 0, 0, -1,
442 			    NULL, 0);
443 			done = 0;
444 		}
445 		break;
446 	case ADD:
447 		done = 0;
448 		files = res->files;
449 		ret = enqueue_tracks(res->files);
450 		break;
451 	case FLUSH:
452 		imsg_compose(ibuf, IMSG_CTL_FLUSH, 0, 0, -1, NULL, 0);
453 		break;
454 	case SHOW:
455 		done = 0;
456 		imsg_compose(ibuf, IMSG_CTL_SHOW, 0, 0, -1, NULL, 0);
457 		break;
458 	case STATUS:
459 		done = 0;
460 		imsg_compose(ibuf, IMSG_CTL_STATUS, 0, 0, -1, NULL, 0);
461 		break;
462 	case NEXT:
463 		imsg_compose(ibuf, IMSG_CTL_NEXT, 0, 0, -1, NULL, 0);
464 		if (verbose) {
465 			imsg_compose(ibuf, IMSG_CTL_STATUS, 0, 0, -1,
466 			    NULL, 0);
467 			done = 0;
468 		}
469 		break;
470 	case PREV:
471 		imsg_compose(ibuf, IMSG_CTL_PREV, 0, 0, -1, NULL, 0);
472 		if (verbose) {
473 			imsg_compose(ibuf, IMSG_CTL_STATUS, 0, 0, -1,
474 			    NULL, 0);
475 			done = 0;
476 		}
477 		break;
478 	case LOAD:
479 		done = 0;
480 		imsg_compose(ibuf, IMSG_CTL_BEGIN, 0, 0, -1, NULL, 0);
481 		break;
482 	case JUMP:
483 		done = 0;
484 		ret = jump_req(res->file);
485 		break;
486 	case REPEAT:
487 		imsg_compose(ibuf, IMSG_CTL_REPEAT, 0, 0, -1,
488 		    &res->rep, sizeof(res->rep));
489 		break;
490 	case MONITOR:
491 		done = 0;
492 		imsg_compose(ibuf, IMSG_CTL_MONITOR, 0, 0, -1,
493 		    NULL, 0);
494 		break;
495 	case NONE:
496 		/* action not expected */
497 		fatalx("invalid action %u", res->action);
498 		break;
499 	}
500 
501 	if (ret != 0)
502 		goto end;
503 
504 	imsg_flush(ibuf);
505 
506 	while (!done) {
507 		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
508 			fatalx("imsg_read error");
509 		if (n == 0)
510 			fatalx("pipe closed");
511 
512 		while (!done) {
513 			if ((n = imsg_get(ibuf, &imsg)) == -1)
514 				fatalx("imsg_get error");
515 			if (n == 0)
516 				break;
517 
518 			switch (res->action) {
519 			case ADD:
520 				done = show_add(&imsg, &ret, &files);
521 				break;
522 			case SHOW:
523 				done = show_complete(res, &imsg, &ret);
524 				break;
525 			case PLAY:
526 			case TOGGLE:
527 			case RESTART:
528 			case STATUS:
529 			case NEXT:
530 			case PREV:
531 			case JUMP:
532 				done = show_status(&imsg, &ret);
533 				break;
534 			case LOAD:
535 				done = show_load(res, &imsg, &ret);
536 				break;
537 			case MONITOR:
538 				done = show_monitor(&imsg, &ret);
539 				break;
540 			default:
541 				done = 1;
542 				break;
543 			}
544 
545 			imsg_free(&imsg);
546 		}
547 	}
548 
549 end:
550 	return ret;
551 }
552 
553 int
554 ctl_noarg(struct parse_result *res, int argc, char **argv)
555 {
556 	int ch;
557 
558 	while ((ch = getopt(argc, argv, "")) != -1)
559 		ctl_usage(res->ctl);
560 	argc -= optind;
561 	argv += optind;
562 
563 	if (argc > 0)
564 		ctl_usage(res->ctl);
565 
566 	return ctlaction(res);
567 }
568 
569 int
570 ctl_add(struct parse_result *res, int argc, char **argv)
571 {
572 	int ch;
573 
574 	while ((ch = getopt(argc, argv, "")) != -1)
575 		ctl_usage(res->ctl);
576 	argc -= optind;
577 	argv += optind;
578 
579 	if (argc == 0)
580 		ctl_usage(res->ctl);
581 	res->files = argv;
582 
583 	if (pledge("stdio rpath", NULL) == -1)
584 		fatal("pledge");
585 
586 	return ctlaction(res);
587 }
588 
589 int
590 ctl_show(struct parse_result *res, int argc, char **argv)
591 {
592 	int ch;
593 
594 	while ((ch = getopt(argc, argv, "p")) != -1) {
595 		switch (ch) {
596 		case 'p':
597 			res->pretty = 1;
598 			break;
599 		default:
600 			ctl_usage(res->ctl);
601 		}
602 	}
603 
604 	return ctlaction(res);
605 }
606 
607 int
608 ctl_load(struct parse_result *res, int argc, char **argv)
609 {
610 	int ch;
611 
612 	while ((ch = getopt(argc, argv, "")) != -1)
613 		ctl_usage(res->ctl);
614 	argc -= optind;
615 	argv += optind;
616 
617 	if (argc == 0)
618 		res->file = NULL;
619 	else if (argc == 1)
620 		res->file = argv[0];
621 	else
622 		ctl_usage(res->ctl);
623 
624 	if (pledge("stdio rpath", NULL) == -1)
625 		fatal("pledge");
626 
627 	return ctlaction(res);
628 }
629 
630 int
631 ctl_jump(struct parse_result *res, int argc, char **argv)
632 {
633 	int ch;
634 
635 	while ((ch = getopt(argc, argv, "")) != -1)
636 		ctl_usage(res->ctl);
637 	argc -= optind;
638 	argv += optind;
639 
640 	if (argc != 1)
641 		ctl_usage(res->ctl);
642 
643 	res->file = argv[0];
644 	return ctlaction(res);
645 }
646 
647 int
648 ctl_repeat(struct parse_result *res, int argc, char **argv)
649 {
650 	int ch, b;
651 
652 	while ((ch = getopt(argc, argv, "")) != -1)
653 		ctl_usage(res->ctl);
654 	argc -= optind;
655 	argv += optind;
656 
657 	if (argc != 2)
658 		ctl_usage(res->ctl);
659 
660 	if (!strcmp(argv[1], "on"))
661 		b = 1;
662 	else if (!strcmp(argv[1], "off"))
663 		b = 0;
664 	else
665 		ctl_usage(res->ctl);
666 
667 	res->rep.repeat_one = -1;
668 	res->rep.repeat_all = -1;
669 	if (!strcmp(argv[0], "one"))
670 		res->rep.repeat_one = b;
671 	else if (!strcmp(argv[0], "all"))
672 		res->rep.repeat_all = b;
673 	else
674 		ctl_usage(res->ctl);
675 
676 	return ctlaction(res);
677 }
678 
679 static int
680 ctl_get_lock(const char *lockfile)
681 {
682 	int lockfd;
683 
684 	if ((lockfd = open(lockfile, O_WRONLY|O_CREAT, 0600)) == -1) {
685 		log_debug("open failed: %s", strerror(errno));
686 		return -1;
687 	}
688 
689 	if (flock(lockfd, LOCK_EX|LOCK_NB) == -1) {
690 		log_debug("flock failed: %s", strerror(errno));
691 		if (errno != EAGAIN)
692 			return -1;
693 		while (flock(lockfd, LOCK_EX) == -1 && errno == EINTR)
694 			/* nop */;
695 		close(lockfd);
696 		return -2;
697 	}
698 	log_debug("flock succeeded");
699 
700 	return lockfd;
701 }
702 
703 static int
704 ctl_connect(void)
705 {
706 	struct timespec		 ts = { 0, 50000000 }; /* 0.05 seconds */
707 	struct sockaddr_un	 sa;
708 	size_t			 size;
709 	int			 fd, lockfd = -1, locked = 0, spawned = 0;
710 	char			*lockfile = NULL;
711 
712 	memset(&sa, 0, sizeof(sa));
713 	sa.sun_family = AF_UNIX;
714 	size = strlcpy(sa.sun_path, csock, sizeof(sa.sun_path));
715 	if (size >= sizeof(sa.sun_path)) {
716 		errno = ENAMETOOLONG;
717 		return -1;
718 	}
719 
720 retry:
721 	if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
722 		return -1;
723 
724 	if (connect(fd, (struct sockaddr *)&sa, sizeof(sa)) == -1) {
725 		log_debug("connection failed: %s", strerror(errno));
726 		if (errno != ECONNREFUSED && errno != ENOENT)
727 			goto failed;
728 		close(fd);
729 
730 		if (!locked) {
731 			xasprintf(&lockfile, "%s.lock", csock);
732 			if ((lockfd = ctl_get_lock(lockfile)) < 0) {
733 				log_debug("didn't get the lock (%d)", lockfd);
734 
735 				free(lockfile);
736 				lockfile = NULL;
737 
738 				if (lockfd == -1)
739 					goto retry;
740 			}
741 
742 			/*
743 			 * Always retry at least once, even if we got
744 			 * the lock, because another client could have
745 			 * taken the lock, started the server and released
746 			 * the lock between our connect() and flock()
747 			 */
748 			locked = 1;
749 			goto retry;
750 		}
751 
752 		if (!spawned) {
753 			log_debug("spawning the daemon");
754 			spawn_daemon();
755 			spawned = 1;
756 		}
757 
758 		nanosleep(&ts, NULL);
759 		goto retry;
760 	}
761 
762 	if (locked && lockfd >= 0) {
763 		unlink(lockfile);
764 		free(lockfile);
765 		close(lockfd);
766 	}
767 	return fd;
768 
769 failed:
770 	if (locked) {
771 		free(lockfile);
772 		close(lockfd);
773 	}
774 	close(fd);
775 	return -1;
776 }
777 
778 __dead void
779 ctl(int argc, char **argv)
780 {
781 	int ctl_sock;
782 
783 	log_init(1, LOG_DAEMON);
784 	log_setverbose(verbose);
785 
786 	if ((ctl_sock = ctl_connect()) == -1)
787 		fatal("can't connect");
788 
789 	if (ctl_sock == -1)
790 		fatalx("failed to connect to the daemon");
791 
792 	ibuf = xmalloc(sizeof(*ibuf));
793 	imsg_init(ibuf, ctl_sock);
794 
795 	optreset = 1;
796 	optind = 1;
797 
798 	exit(parse(argc, argv));
799 }