op public repos

Blob

Date:: Sat Mar 26 18:51:30 2022 UTC
Message:: add back missing memzero
Actions:: History | Blame | Raw File
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 <stdio.h>
28 #include <stdlib.h>
29 #include <stdint.h>
30 #include <string.h>
31 #include <syslog.h>
32 #include <unistd.h>
33 #include <imsg.h>
34 
35 #include "amused.h"
36 #include "log.h"
37 #include "playlist.h"
38 #include "xmalloc.h"
39 
40 static struct imsgbuf *ibuf;
41 
42 int	ctl_noarg(struct parse_result *, int, char **);
43 int	ctl_add(struct parse_result *, int, char **);
44 int	ctl_show(struct parse_result *, int, char **);
45 int	ctl_load(struct parse_result *, int, char **);
46 int	ctl_jump(struct parse_result *, int, char **);
47 int	ctl_repeat(struct parse_result *, int, char **);
48 
49 struct ctl_command ctl_commands[] = {
50 	{ "play",	PLAY,		ctl_noarg,	"" },
51 	{ "pause",	PAUSE,		ctl_noarg,	"" },
52 	{ "toggle",	TOGGLE,		ctl_noarg,	"" },
53 	{ "stop",	STOP,		ctl_noarg,	"" },
54 	{ "restart",	RESTART,	ctl_noarg,	"" },
55 	{ "add",	ADD,		ctl_add,	"files...", 1 },
56 	{ "flush",	FLUSH,		ctl_noarg,	"" },
57 	{ "show",	SHOW,		ctl_show,	"[-p]" },
58 	{ "status",	STATUS,		ctl_noarg,	"" },
59 	{ "next",	NEXT,		ctl_noarg,	"" },
60 	{ "prev",	PREV,		ctl_noarg,	"" },
61 	{ "load",	LOAD,		ctl_load,	"[file]", 1 },
62 	{ "jump",	JUMP,		ctl_jump,	"pattern" },
63 	{ "repeat",	REPEAT,		ctl_repeat,	"one|all on|off" },
64 	{ "monitor",	MONITOR,	ctl_noarg,	"" },
65 	{ NULL },
66 };
67 
68 __dead void
69 usage(void)
70 {
71 	fprintf(stderr, "usage: %s [-dv] [-s socket]\n", getprogname());
72 	exit(1);
73 }
74 
75 static __dead void
76 ctl_usage(struct ctl_command *ctl)
77 {
78 	fprintf(stderr, "usage: %s [-v] [-s socket] %s %s\n", getprogname(),
79 	    ctl->name, ctl->usage);
80 	exit(1);
81 }
82 
83 static int
84 parse(int argc, char **argv)
85 {
86 	struct ctl_command	*ctl = NULL;
87 	struct parse_result	 res;
88 	const char		*argv0;
89 	int			 i, status;
90 
91 	memset(&res, 0, sizeof(res));
92 
93 	if ((argv0 = argv[0]) == NULL)
94 		argv0 = "status";
95 
96 	for (i = 0; ctl_commands[i].name != NULL; ++i) {
97 		if (strncmp(ctl_commands[i].name, argv0, strlen(argv0))
98 		    == 0) {
99 			if (ctl != NULL) {
100 				fprintf(stderr,
101 				    "ambiguous argument: %s\n", argv0);
102 				usage();
103 			}
104 			ctl = &ctl_commands[i];
105 		}
106 	}
107 
108 	if (ctl == NULL) {
109 		fprintf(stderr, "unknown argument: %s\n", argv[0]);
110 		usage();
111 	}
112 
113 	res.action = ctl->action;
114 	res.ctl = ctl;
115 
116 	if (!ctl->has_pledge) {
117 		/* pledge(2) default if command doesn't have its own */
118 		if (pledge("stdio", NULL) == -1)
119 			fatal("pledge");
120 	}
121 
122 	status = ctl->main(&res, argc, argv);
123 	close(ibuf->fd);
124 	free(ibuf);
125 	return status;
126 }
127 
128 static int
129 enqueue_tracks(char **files)
130 {
131 	char res[PATH_MAX];
132 	int enq = 0;
133 
134 	for (; *files != NULL; ++files) {
135 		memset(&res, 0, sizeof(res));
136 		if (realpath(*files, res) == NULL) {
137 			log_warn("realpath %s", *files);
138 			continue;
139 		}
140 
141 		imsg_compose(ibuf, IMSG_CTL_ADD, 0, 0, -1,
142 		    res, sizeof(res));
143 		enq++;
144 	}
145 
146 	return enq == 0;
147 }
148 
149 static int
150 jump_req(const char *arg)
151 {
152 	char path[PATH_MAX];
153 
154 	memset(path, 0, sizeof(path));
155 	strlcpy(path, arg, sizeof(path));
156 	imsg_compose(ibuf, IMSG_CTL_JUMP, 0, 0, -1, path, sizeof(path));
157 	return 0;
158 }
159 
160 static void
161 print_error_message(const char *prfx, struct imsg *imsg)
162 {
163 	size_t datalen;
164 	char *msg;
165 
166 	datalen = IMSG_DATA_SIZE(*imsg);
167 	if ((msg = calloc(1, datalen)) == NULL)
168 		fatal("calloc %zu", datalen);
169 	memcpy(msg, imsg->data, datalen);
170 	if (datalen == 0 || msg[datalen-1] != '\0')
171 		fatalx("malformed error message");
172 
173 	log_warnx("%s: %s", prfx, msg);
174 	free(msg);
175 }
176 
177 static int
178 show_add(struct imsg *imsg, int *ret, char ***files)
179 {
180 	if (**files == NULL) {
181 		log_warnx("received more replies than file sent");
182 		*ret = 1;
183 		return 1;
184 	}
185 
186 	if (imsg->hdr.type == IMSG_CTL_ERR)
187 		print_error_message(**files, imsg);
188 	else if (imsg->hdr.type == IMSG_CTL_ADD)
189 		log_debug("enqueued %s", **files);
190 	else
191 		fatalx("got invalid message %d", imsg->hdr.type);
192 
193 	(*files)++;
194 	return (**files) == NULL;
195 }
196 
197 static int
198 show_complete(struct parse_result *res, struct imsg *imsg, int *ret)
199 {
200 	struct player_status s;
201 	size_t datalen;
202 
203 	if (imsg->hdr.type == IMSG_CTL_ERR) {
204 		print_error_message("show failed", imsg);
205 		*ret = 1;
206 		return 1;
207 	}
208 
209 	datalen = IMSG_DATA_SIZE(*imsg);
210 	if (datalen == 0)
211 		return 1;
212 
213 	if (datalen != sizeof(s))
214 		fatalx("%s: data size mismatch", __func__);
215 	memcpy(&s, imsg->data, sizeof(s));
216 	if (s.path[sizeof(s.path)-1] != '\0')
217 		fatalx("%s: data corrupted?", __func__);
218 
219 	if (res->pretty)
220 		printf("%c ", s.status == STATE_PLAYING ? '>' : ' ');
221 	printf("%s\n", s.path);
222 	return 0;
223 }
224 
225 static int
226 show_status(struct imsg *imsg, int *ret)
227 {
228 	struct player_status s;
229 	size_t datalen;
230 
231 	if (imsg->hdr.type == IMSG_CTL_ERR) {
232 		print_error_message("show failed", imsg);
233 		*ret = 1;
234 		return 1;
235 	}
236 
237 	if (imsg->hdr.type != IMSG_CTL_STATUS)
238 		fatalx("%s: got wrong reply", __func__);
239 
240 	datalen = IMSG_DATA_SIZE(*imsg);
241 	if (datalen != sizeof(s))
242 		fatalx("%s: data size mismatch", __func__);
243 	memcpy(&s, imsg->data, sizeof(s));
244 	if (s.path[sizeof(s.path)-1] != '\0')
245 		fatalx("%s: data corrupted?", __func__);
246 
247 	switch (s.status) {
248 	case STATE_STOPPED:
249 		printf("stopped ");
250 		break;
251 	case STATE_PLAYING:
252 		printf("playing ");
253 		break;
254 	case STATE_PAUSED:
255 		printf("paused ");
256 		break;
257 	default:
258 		printf("unknown ");
259 		break;
260 	}
261 
262 	printf("%s\n", s.path);
263 	printf("repeat one %s\nrepeat all %s\n",
264 	    s.rp.repeat_one ? "on" : "off",
265 	    s.rp.repeat_all ? "on" : "off");
266 	return 1;
267 }
268 
269 static int
270 show_load(struct parse_result *res, struct imsg *imsg, int *ret)
271 {
272 	FILE		*f;
273 	const char	*file;
274 	char		*line = NULL;
275 	char		 path[PATH_MAX], cwd[PATH_MAX];
276 	size_t		 linesize = 0, i = 0, n;
277 	ssize_t		 linelen, curr = -1;
278 
279 	if (imsg->hdr.type == IMSG_CTL_ERR) {
280 		print_error_message("load failed", imsg);
281 		*ret = 1;
282 		return 1;
283 	}
284 
285 	if (imsg->hdr.type == IMSG_CTL_ADD)
286 		return 0;
287 
288 	if (imsg->hdr.type == IMSG_CTL_COMMIT)
289 		return 1;
290 
291 	if (imsg->hdr.type != IMSG_CTL_BEGIN)
292 		fatalx("got unexpected message %d", imsg->hdr.type);
293 
294 	if (res->file == NULL)
295 		f = stdin;
296 	else if ((f = fopen(res->file, "r")) == NULL) {
297 		log_warn("can't open %s", res->file);
298 		*ret = 1;
299 		return 1;
300 	}
301 
302 	if (getcwd(cwd, sizeof(cwd)) == NULL)
303 		fatal("getcwd");
304 
305 	while ((linelen = getline(&line, &linesize, f)) != -1) {
306 		if (linelen == 0)
307 			continue;
308 		line[linelen-1] = '\0';
309 		file = line;
310 		if (!strncmp(file, "> ", 2)) {
311 			file += 2;
312 			curr = i;
313 		} else if (!strncmp(file, "  ", 2))
314 			file += 2;
315 
316 		if (!strncmp(file, "./", 2))
317 			file += 2;
318 
319 		memset(path, 0, sizeof(path));
320 		if (*file == '/')
321 			n = strlcpy(path, file, sizeof(path));
322 		else
323 			n = snprintf(path, sizeof(path), "%s/%s", cwd, file);
324 
325 		if (n >= sizeof(path)) {
326 			log_warnx("path too long: %s", file);
327 			continue;
328 		}
329 
330 		i++;
331 		imsg_compose(ibuf, IMSG_CTL_ADD, 0, 0, -1,
332 		    path, sizeof(path));
333 	}
334 
335 	free(line);
336 	if (ferror(f))
337 		fatal("getline");
338 	fclose(f);
339 
340 	if (i == 0) {
341 		*ret = 1;
342 		return 1;
343 	}
344 
345 	imsg_compose(ibuf, IMSG_CTL_COMMIT, 0, 0, -1,
346 	    &curr, sizeof(curr));
347 	imsg_flush(ibuf);
348 	return 0;
349 }
350 
351 static int
352 show_monitor(struct imsg *imsg, int *ret)
353 {
354 	int type;
355 
356 	if (imsg->hdr.type != IMSG_CTL_MONITOR) {
357 		log_warnx("wrong message type received: %d",
358 		    imsg->hdr.type);
359 		*ret = 1;
360 		return 1;
361 	}
362 
363 	if (IMSG_DATA_SIZE(*imsg) != sizeof(type)) {
364 		log_warnx("size mismatch");
365 		*ret = 1;
366 		return 1;
367 	}
368 
369 	memcpy(&type, imsg->data, sizeof(type));
370 	switch (type) {
371 	case IMSG_CTL_PLAY:
372 		puts("play");
373 		break;
374 	case IMSG_CTL_TOGGLE_PLAY:
375 		puts("toggle");
376 		break;
377 	case IMSG_CTL_PAUSE:
378 		puts("pause");
379 		break;
380 	case IMSG_CTL_STOP:
381 		puts("stop");
382 		break;
383 	case IMSG_CTL_RESTART:
384 		puts("restart");
385 		break;
386 	case IMSG_CTL_FLUSH:
387 		puts("flush");
388 		break;
389 	case IMSG_CTL_NEXT:
390 		puts("next");
391 		break;
392 	case IMSG_CTL_PREV:
393 		puts("prev");
394 		break;
395 	case IMSG_CTL_JUMP:
396 		puts("jump");
397 		break;
398 	case IMSG_CTL_REPEAT:
399 		puts("repeat");
400 		break;
401 	case IMSG_CTL_ADD:
402 		puts("add");
403 		break;
404 	case IMSG_CTL_COMMIT:
405 		puts("load");
406 		break;
407 	default:
408 		puts("unknown");
409 		break;
410 	}
411 
412 	fflush(stdout);
413 	return 0;
414 }
415 
416 static int
417 ctlaction(struct parse_result *res)
418 {
419 	struct imsg imsg;
420 	ssize_t n;
421 	int ret = 0, done = 1;
422 	char **files;
423 
424 	switch (res->action) {
425 	case PLAY:
426 		imsg_compose(ibuf, IMSG_CTL_PLAY, 0, 0, -1, NULL, 0);
427 		if (verbose) {
428 			imsg_compose(ibuf, IMSG_CTL_STATUS, 0, 0, -1,
429 			    NULL, 0);
430 			done = 0;
431 		}
432 		break;
433 	case PAUSE:
434 		imsg_compose(ibuf, IMSG_CTL_PAUSE, 0, 0, -1, NULL, 0);
435 		break;
436 	case TOGGLE:
437 		imsg_compose(ibuf, IMSG_CTL_TOGGLE_PLAY, 0, 0, -1, NULL, 0);
438 		if (verbose) {
439 			imsg_compose(ibuf, IMSG_CTL_STATUS, 0, 0, -1,
440 			    NULL, 0);
441 			done = 0;
442 		}
443 		break;
444 	case STOP:
445 		imsg_compose(ibuf, IMSG_CTL_STOP, 0, 0, -1, NULL, 0);
446 		break;
447 	case RESTART:
448 		imsg_compose(ibuf, IMSG_CTL_RESTART, 0, 0, -1, NULL, 0);
449 		if (verbose) {
450 			imsg_compose(ibuf, IMSG_CTL_STATUS, 0, 0, -1,
451 			    NULL, 0);
452 			done = 0;
453 		}
454 		break;
455 	case ADD:
456 		done = 0;
457 		files = res->files;
458 		ret = enqueue_tracks(res->files);
459 		break;
460 	case FLUSH:
461 		imsg_compose(ibuf, IMSG_CTL_FLUSH, 0, 0, -1, NULL, 0);
462 		break;
463 	case SHOW:
464 		done = 0;
465 		imsg_compose(ibuf, IMSG_CTL_SHOW, 0, 0, -1, NULL, 0);
466 		break;
467 	case STATUS:
468 		done = 0;
469 		imsg_compose(ibuf, IMSG_CTL_STATUS, 0, 0, -1, NULL, 0);
470 		break;
471 	case NEXT:
472 		imsg_compose(ibuf, IMSG_CTL_NEXT, 0, 0, -1, NULL, 0);
473 		if (verbose) {
474 			imsg_compose(ibuf, IMSG_CTL_STATUS, 0, 0, -1,
475 			    NULL, 0);
476 			done = 0;
477 		}
478 		break;
479 	case PREV:
480 		imsg_compose(ibuf, IMSG_CTL_PREV, 0, 0, -1, NULL, 0);
481 		if (verbose) {
482 			imsg_compose(ibuf, IMSG_CTL_STATUS, 0, 0, -1,
483 			    NULL, 0);
484 			done = 0;
485 		}
486 		break;
487 	case LOAD:
488 		done = 0;
489 		imsg_compose(ibuf, IMSG_CTL_BEGIN, 0, 0, -1, NULL, 0);
490 		break;
491 	case JUMP:
492 		done = 0;
493 		ret = jump_req(res->file);
494 		break;
495 	case REPEAT:
496 		imsg_compose(ibuf, IMSG_CTL_REPEAT, 0, 0, -1,
497 		    &res->rep, sizeof(res->rep));
498 		break;
499 	case MONITOR:
500 		done = 0;
501 		imsg_compose(ibuf, IMSG_CTL_MONITOR, 0, 0, -1,
502 		    NULL, 0);
503 		break;
504 	case NONE:
505 		/* action not expected */
506 		fatalx("invalid action %u", res->action);
507 		break;
508 	}
509 
510 	if (ret != 0)
511 		goto end;
512 
513 	imsg_flush(ibuf);
514 
515 	while (!done) {
516 		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
517 			fatalx("imsg_read error");
518 		if (n == 0)
519 			fatalx("pipe closed");
520 
521 		while (!done) {
522 			if ((n = imsg_get(ibuf, &imsg)) == -1)
523 				fatalx("imsg_get error");
524 			if (n == 0)
525 				break;
526 
527 			switch (res->action) {
528 			case ADD:
529 				done = show_add(&imsg, &ret, &files);
530 				break;
531 			case SHOW:
532 				done = show_complete(res, &imsg, &ret);
533 				break;
534 			case PLAY:
535 			case TOGGLE:
536 			case RESTART:
537 			case STATUS:
538 			case NEXT:
539 			case PREV:
540 			case JUMP:
541 				done = show_status(&imsg, &ret);
542 				break;
543 			case LOAD:
544 				done = show_load(res, &imsg, &ret);
545 				break;
546 			case MONITOR:
547 				done = show_monitor(&imsg, &ret);
548 				break;
549 			default:
550 				done = 1;
551 				break;
552 			}
553 
554 			imsg_free(&imsg);
555 		}
556 	}
557 
558 end:
559 	return ret;
560 }
561 
562 int
563 ctl_noarg(struct parse_result *res, int argc, char **argv)
564 {
565 	int ch;
566 
567 	while ((ch = getopt(argc, argv, "")) != -1)
568 		ctl_usage(res->ctl);
569 	argc -= optind;
570 	argv += optind;
571 
572 	if (argc > 0)
573 		ctl_usage(res->ctl);
574 
575 	return ctlaction(res);
576 }
577 
578 int
579 ctl_add(struct parse_result *res, int argc, char **argv)
580 {
581 	int ch;
582 
583 	while ((ch = getopt(argc, argv, "")) != -1)
584 		ctl_usage(res->ctl);
585 	argc -= optind;
586 	argv += optind;
587 
588 	if (argc == 0)
589 		ctl_usage(res->ctl);
590 	res->files = argv;
591 
592 	if (pledge("stdio rpath", NULL) == -1)
593 		fatal("pledge");
594 
595 	return ctlaction(res);
596 }
597 
598 int
599 ctl_show(struct parse_result *res, int argc, char **argv)
600 {
601 	int ch;
602 
603 	while ((ch = getopt(argc, argv, "p")) != -1) {
604 		switch (ch) {
605 		case 'p':
606 			res->pretty = 1;
607 			break;
608 		default:
609 			ctl_usage(res->ctl);
610 		}
611 	}
612 
613 	return ctlaction(res);
614 }
615 
616 int
617 ctl_load(struct parse_result *res, int argc, char **argv)
618 {
619 	int ch;
620 
621 	while ((ch = getopt(argc, argv, "")) != -1)
622 		ctl_usage(res->ctl);
623 	argc -= optind;
624 	argv += optind;
625 
626 	if (argc == 0)
627 		res->file = NULL;
628 	else if (argc == 1)
629 		res->file = argv[0];
630 	else
631 		ctl_usage(res->ctl);
632 
633 	if (pledge("stdio rpath", NULL) == -1)
634 		fatal("pledge");
635 
636 	return ctlaction(res);
637 }
638 
639 int
640 ctl_jump(struct parse_result *res, int argc, char **argv)
641 {
642 	int ch;
643 
644 	while ((ch = getopt(argc, argv, "")) != -1)
645 		ctl_usage(res->ctl);
646 	argc -= optind;
647 	argv += optind;
648 
649 	if (argc != 1)
650 		ctl_usage(res->ctl);
651 
652 	res->file = argv[0];
653 	return ctlaction(res);
654 }
655 
656 int
657 ctl_repeat(struct parse_result *res, int argc, char **argv)
658 {
659 	int ch, b;
660 
661 	while ((ch = getopt(argc, argv, "")) != -1)
662 		ctl_usage(res->ctl);
663 	argc -= optind;
664 	argv += optind;
665 
666 	if (argc != 2)
667 		ctl_usage(res->ctl);
668 
669 	if (!strcmp(argv[1], "on"))
670 		b = 1;
671 	else if (!strcmp(argv[1], "off"))
672 		b = 0;
673 	else
674 		ctl_usage(res->ctl);
675 
676 	res->rep.repeat_one = -1;
677 	res->rep.repeat_all = -1;
678 	if (!strcmp(argv[0], "one"))
679 		res->rep.repeat_one = b;
680 	else if (!strcmp(argv[0], "all"))
681 		res->rep.repeat_all = b;
682 	else
683 		ctl_usage(res->ctl);
684 
685 	return ctlaction(res);
686 }
687 
688 static int
689 ctl_get_lock(const char *lockfile)
690 {
691 	int lockfd;
692 
693 	if ((lockfd = open(lockfile, O_WRONLY|O_CREAT, 0600)) == -1) {
694 		log_debug("open failed: %s", strerror(errno));
695 		return -1;
696 	}
697 
698 	if (flock(lockfd, LOCK_EX|LOCK_NB) == -1) {
699 		log_debug("flock failed: %s", strerror(errno));
700 		if (errno != EAGAIN)
701 			return -1;
702 		while (flock(lockfd, LOCK_EX) == -1 && errno == EINTR)
703 			/* nop */;
704 		close(lockfd);
705 		return -2;
706 	}
707 	log_debug("flock succeeded");
708 
709 	return lockfd;
710 }
711 
712 static int
713 ctl_connect(void)
714 {
715 	struct timespec		 ts = { 0, 50000000 }; /* 0.05 seconds */
716 	struct sockaddr_un	 sa;
717 	size_t			 size;
718 	int			 fd, lockfd = -1, locked = 0, spawned = 0;
719 	char			*lockfile = NULL;
720 
721 	memset(&sa, 0, sizeof(sa));
722 	sa.sun_family = AF_UNIX;
723 	size = strlcpy(sa.sun_path, csock, sizeof(sa.sun_path));
724 	if (size >= sizeof(sa.sun_path)) {
725 		errno = ENAMETOOLONG;
726 		return -1;
727 	}
728 
729 retry:
730 	if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
731 		return -1;
732 
733 	if (connect(fd, (struct sockaddr *)&sa, sizeof(sa)) == -1) {
734 		log_debug("connection failed: %s", strerror(errno));
735 		if (errno != ECONNREFUSED && errno != ENOENT)
736 			goto failed;
737 		close(fd);
738 
739 		if (!locked) {
740 			xasprintf(&lockfile, "%s.lock", csock);
741 			if ((lockfd = ctl_get_lock(lockfile)) < 0) {
742 				log_debug("didn't get the lock (%d)", lockfd);
743 
744 				free(lockfile);
745 				lockfile = NULL;
746 
747 				if (lockfd == -1)
748 					goto retry;
749 			}
750 
751 			/*
752 			 * Always retry at least once, even if we got
753 			 * the lock, because another client could have
754 			 * taken the lock, started the server and released
755 			 * the lock between our connect() and flock()
756 			 */
757 			locked = 1;
758 			goto retry;
759 		}
760 
761 		if (!spawned) {
762 			log_debug("spawning the daemon");
763 			spawn_daemon();
764 			spawned = 1;
765 		}
766 
767 		nanosleep(&ts, NULL);
768 		goto retry;
769 	}
770 
771 	if (locked && lockfd >= 0) {
772 		unlink(lockfile);
773 		free(lockfile);
774 		close(lockfd);
775 	}
776 	return fd;
777 
778 failed:
779 	if (locked) {
780 		free(lockfile);
781 		close(lockfd);
782 	}
783 	close(fd);
784 	return -1;
785 }
786 
787 __dead void
788 ctl(int argc, char **argv)
789 {
790 	int ctl_sock;
791 
792 	log_init(1, LOG_DAEMON);
793 	log_setverbose(verbose);
794 
795 	if ((ctl_sock = ctl_connect()) == -1)
796 		fatal("can't connect");
797 
798 	if (ctl_sock == -1)
799 		fatalx("failed to connect to the daemon");
800 
801 	ibuf = xmalloc(sizeof(*ibuf));
802 	imsg_init(ibuf, ctl_sock);
803 
804 	optreset = 1;
805 	optind = 1;
806 
807 	exit(parse(argc, argv));
808 }