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Date:: Tue Dec 14 09:22:49 2021 UTC
Message:: split some code from kamirepl into 9pclib.c
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1 /*
2  * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
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 "compat.h"
18 
19 #include <sys/types.h>
20 #include <sys/socket.h>
21 
22 #include <netdb.h>
23 
24 #include <assert.h>
25 #include <endian.h>
26 #include <errno.h>
27 #include <fcntl.h>
28 #include <inttypes.h>
29 #include <signal.h>
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <string.h>
33 #include <syslog.h>
34 #include <tls.h>
35 #include <unistd.h>
36 
37 #include "9pclib.h"
38 #include "kamid.h"
39 #include "log.h"
40 #include "utils.h"
41 
42 #define DEBUG_PACKETS 0
43 
44 #define PROMPT "=% "
45 
46 /* flags */
47 int			 verbose;
48 int			 tls;
49 const char		*keypath;
50 const char		*crtpath;
51 const char		*host;
52 const char		*port;
53 
54 /* state */
55 struct tls_config	*tlsconf;
56 struct tls		*ctx;
57 struct bufferevent	*bev, *inbev;
58 
59 static void ATTR_DEAD	 usage(int);
60 
61 static void		 sig_handler(int, short, void *);
62 
63 static int		 openconn(void);
64 static void		 mark_nonblock(int);
65 
66 static void		 tls_readcb(int, short, void *);
67 static void		 tls_writecb(int, short, void *);
68 
69 static void		 client_read(struct bufferevent *, void *);
70 static void		 client_write(struct bufferevent *, void *);
71 static void		 client_error(struct bufferevent *, short, void *);
72 
73 static void		 repl_read(struct bufferevent *, void *);
74 static void		 repl_error(struct bufferevent *, short, void *);
75 
76 static void		 excmd_version(const char **, int);
77 static void		 excmd_attach(const char **, int);
78 static void		 excmd_clunk(const char **, int);
79 static void		 excmd_flush(const char **, int);
80 static void		 excmd_walk(const char ** , int);
81 static void		 excmd(const char **, int);
82 
83 static const char	*pp_qid_type(uint8_t);
84 static void		 pp_qid(const uint8_t *, uint32_t);
85 static void		 pp_msg(uint32_t, uint8_t, uint16_t, const uint8_t *);
86 static void		 handle_9p(const uint8_t *, size_t);
87 static void		 clr(void);
88 static void		 prompt(void);
89 
90 static void ATTR_DEAD
91 usage(int ret)
92 {
93 	fprintf(stderr,
94 	    "usage: %s [-chv] [-C crt] [-K key] [-H host] [-P port]\n",
95 	    getprogname());
96 	fprintf(stderr, PACKAGE_NAME " suite version " PACKAGE_VERSION "\n");
97 	exit(ret);
98 }
99 
100 static void
101 sig_handler(int sig, short event, void *d)
102 {
103 	/*
104 	 * Normal signal handler rules don't apply because libevent
105 	 * decouples for us.
106 	 */
107 
108 	switch (sig) {
109 	case SIGINT:
110 	case SIGTERM:
111 		clr();
112 		log_warnx("Shutting down...");
113 		event_loopbreak();
114 		return;
115 	default:
116 		fatalx("unexpected signal %d", sig);
117 	}
118 }
119 
120 static int
121 openconn(void)
122 {
123 	struct addrinfo hints, *res, *res0;
124 	int error;
125 	int save_errno;
126 	int s;
127 	const char *cause = NULL;
128 
129 	memset(&hints, 0, sizeof(hints));
130 	hints.ai_family = AF_UNSPEC;
131 	hints.ai_socktype = SOCK_STREAM;
132 	if ((error = getaddrinfo(host, port, &hints, &res0))) {
133 		warnx("%s", gai_strerror(error));
134 		return -1;
135 	}
136 
137 	s = -1;
138 	for (res = res0; res; res = res->ai_next) {
139 		s = socket(res->ai_family, res->ai_socktype,
140 		    res->ai_protocol);
141 		if (s == -1) {
142 			cause = "socket";
143 			continue;
144 		}
145 
146 		if (connect(s, res->ai_addr, res->ai_addrlen) == -1) {
147 			cause = "connect";
148 			save_errno = errno;
149 			close(s);
150 			errno = save_errno;
151 			s = -1;
152 			continue;
153 		}
154 
155 		break;
156 	}
157 
158 	freeaddrinfo(res0);
159 
160 	if (s == -1)
161 		warn("%s", cause);
162 
163 	return s;
164 }
165 
166 static void
167 mark_nonblock(int fd)
168 {
169 	int flags;
170 
171 	if ((flags = fcntl(fd, F_GETFL)) == -1)
172 		fatal("fcntl(F_GETFL)");
173 	if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1)
174 		fatal("fcntl(F_SETFL)");
175 }
176 
177 static void
178 tls_readcb(int fd, short event, void *d)
179 {
180 	struct bufferevent	*bufev = d;
181 	char			 buf[IBUF_READ_SIZE];
182 	int			 what = EVBUFFER_READ;
183 	int			 howmuch = IBUF_READ_SIZE;
184 	ssize_t			 ret;
185 	size_t			 len;
186 
187 	if (event == EV_TIMEOUT) {
188 		what |= EVBUFFER_TIMEOUT;
189 		goto err;
190 	}
191 
192 	if (bufev->wm_read.high != 0)
193 		howmuch = MIN(sizeof(buf), bufev->wm_read.high);
194 
195 	switch (ret = tls_read(ctx, buf, howmuch)) {
196 	case TLS_WANT_POLLIN:
197 	case TLS_WANT_POLLOUT:
198 		goto retry;
199 	case -1:
200 		what |= EVBUFFER_ERROR;
201 		goto err;
202 	}
203 	len = ret;
204 
205 	if (len == 0) {
206 		what |= EVBUFFER_EOF;
207 		goto err;
208 	}
209 
210 	if (evbuffer_add(bufev->input, buf, len) == -1) {
211 		what |= EVBUFFER_ERROR;
212 		goto err;
213 	}
214 
215 	event_add(&bufev->ev_read, NULL);
216 
217 	len = EVBUFFER_LENGTH(bufev->input);
218 	if (bufev->wm_read.low != 0 && len < bufev->wm_read.low)
219 		return;
220 	if (bufev->readcb != NULL)
221 		(*bufev->readcb)(bufev, bufev->cbarg);
222 	return;
223 
224 retry:
225 	event_add(&bufev->ev_read, NULL);
226 	return;
227 
228 err:
229 	(*bufev->errorcb)(bufev, what, bufev->cbarg);
230 }
231 
232 static void
233 tls_writecb(int fd, short event, void *d)
234 {
235 	struct bufferevent	*bufev = d;
236 	ssize_t			 ret;
237 	size_t			 len;
238 	short			 what = EVBUFFER_WRITE;
239 	void			*data;
240 
241 	if (event == EV_TIMEOUT) {
242 		what |= EVBUFFER_TIMEOUT;
243 		goto err;
244 	}
245 
246 	len = EVBUFFER_LENGTH(bufev->output);
247 	if (len != 0) {
248 		data = EVBUFFER_DATA(bufev->output);
249 
250 #if DEBUG_PACKETS
251 		hexdump("outgoing msg", data, len);
252 #endif
253 
254 		switch (ret = tls_write(ctx, data, len)) {
255 		case TLS_WANT_POLLIN:
256 		case TLS_WANT_POLLOUT:
257 			goto retry;
258 		case -1:
259 			what |= EVBUFFER_ERROR;
260 			goto err;
261 		}
262 		evbuffer_drain(bufev->output, ret);
263 	}
264 
265 	if (EVBUFFER_LENGTH(bufev->output) != 0)
266 		event_add(&bufev->ev_write, NULL);
267 
268 	if (bufev->writecb != NULL &&
269 	    EVBUFFER_LENGTH(bufev->output) <= bufev->wm_write.low)
270 		(*bufev->writecb)(bufev, bufev->cbarg);
271 	return;
272 
273 retry:
274 	event_add(&bufev->ev_write, NULL);
275 	return;
276 err:
277 	(*bufev->errorcb)(bufev, what, bufev->cbarg);
278 }
279 
280 static void
281 client_read(struct bufferevent *bev, void *d)
282 {
283 	struct evbuffer	*src = EVBUFFER_INPUT(bev);
284 	uint32_t	 len;
285 	uint8_t		*data;
286 
287 	for (;;) {
288 		if (EVBUFFER_LENGTH(src) < sizeof(len))
289 			return;
290 
291 		data = EVBUFFER_DATA(src);
292 
293 		memcpy(&len, data, sizeof(len));
294 		len = le32toh(len);
295 
296 		if (len < HEADERSIZE)
297 			fatal("incoming message is too small! (%d bytes)",
298 			    len);
299 
300 		if (len > EVBUFFER_LENGTH(src))
301 			return;
302 
303 #if DEBUG_PACKETS
304 		hexdump("incoming msg", data, len);
305 #endif
306 
307 		handle_9p(data, len);
308 		evbuffer_drain(src, len);
309 	}
310 }
311 
312 static void
313 client_write(struct bufferevent *bev, void *data)
314 {
315 	return; /* nothing to do */
316 }
317 
318 static void
319 client_error(struct bufferevent *bev, short err, void *data)
320 {
321 	if (err & EVBUFFER_ERROR)
322 		fatal("buffer event error");
323 
324 	if (err & EVBUFFER_EOF) {
325 		clr();
326 		log_info("EOF");
327 		event_loopbreak();
328 		return;
329 	}
330 
331 	clr();
332 	log_warnx("unknown event error");
333 	event_loopbreak();
334 }
335 
336 static void
337 repl_read(struct bufferevent *bev, void *d)
338 {
339 	size_t		 len;
340 	int		 argc;
341 	const char	*argv[10], **ap;
342 	char		*line;
343 
344 	line = evbuffer_readln(bev->input, &len, EVBUFFER_EOL_LF);
345 	if (line == NULL)
346 		return;
347 
348 	for (argc = 0, ap = argv; ap < &argv[9] &&
349 	    (*ap = strsep(&line, " \t")) != NULL;) {
350 		if (**ap != '\0')
351 			ap++, argc++;
352 	}
353 
354 	clr();
355 	excmd(argv, argc);
356 	prompt();
357 
358 	free(line);
359 }
360 
361 static void
362 repl_error(struct bufferevent *bev, short error, void *d)
363 {
364 	fatalx("an error occurred");
365 }
366 
367 static inline void
368 do_send(void)
369 {
370 	bufferevent_write_buffer(bev, evb);
371 }
372 
373 /* version [version-str] */
374 static void
375 excmd_version(const char **argv, int argc)
376 {
377 	const char	*s;
378 
379 	s = VERSION9P;
380 	if (argc == 2)
381 		s = argv[1];
382 
383 	tversion(s, MSIZE9P);
384 	do_send();
385 }
386 
387 /* attach fid uname aname */
388 static void
389 excmd_attach(const char **argv, int argc)
390 {
391 	uint32_t	 fid;
392 	const char	*errstr;
393 
394 	if (argc != 4)
395 		goto usage;
396 
397         fid = strtonum(argv[1], 0, UINT32_MAX, &errstr);
398 	if (errstr != NULL) {
399 		log_warnx("fid is %s: %s", errstr, argv[1]);
400 		return;
401 	}
402 
403 	tattach(fid, NOFID, argv[2], argv[3]);
404 	do_send();
405 	return;
406 
407 usage:
408 	log_warnx("usage: attach fid uname aname");
409 }
410 
411 /* clunk fid */
412 static void
413 excmd_clunk(const char **argv, int argc)
414 {
415 	uint32_t	 fid;
416 	const char	*errstr;
417 
418 	if (argc != 2)
419 		goto usage;
420 
421 	fid = strtonum(argv[1], 0, UINT32_MAX, &errstr);
422 	if (errstr != NULL) {
423 		log_warnx("fid is %s: %s", errstr, argv[1]);
424 		return;
425 	}
426 
427 	tclunk(fid);
428 	do_send();
429 	return;
430 
431 usage:
432 	log_warnx("usage: clunk fid");
433 }
434 
435 /* flush oldtag */
436 static void
437 excmd_flush(const char **argv, int argc)
438 {
439 	uint16_t	 oldtag;
440 	const char	*errstr;
441 
442 	if (argc != 2)
443 		goto usage;
444 
445 	oldtag = strtonum(argv[1], 0, UINT16_MAX, &errstr);
446 	if (errstr != NULL) {
447 		log_warnx("oldtag is %s: %s", errstr, argv[1]);
448 		return;
449 	}
450 
451 	tflush(oldtag);
452 	do_send();
453 	return;
454 
455 usage:
456 	log_warnx("usage: flush oldtag");
457 }
458 
459 /* walk fid newfid wnames... */
460 static void
461 excmd_walk(const char **argv, int argc)
462 {
463 	uint32_t	 fid, newfid;
464 	const char	*errstr;
465 
466 	if (argc < 3)
467 		goto usage;
468 
469 	fid = strtonum(argv[1], 0, UINT32_MAX, &errstr);
470 	if (errstr != NULL) {
471 		log_warnx("fid is %s: %s", errstr, argv[1]);
472 		return;
473 	}
474 
475 	newfid = strtonum(argv[2], 0, UINT32_MAX, &errstr);
476 	if (errstr != NULL) {
477 		log_warnx("newfid is %s: %s", errstr, argv[1]);
478 		return;
479 	}
480 
481 	twalk(fid, newfid, argv + 3, argc - 3);
482 	do_send();
483 	return;
484 
485 usage:
486 	log_warnx("usage: walk fid newfid wnames...");
487 }
488 
489 static void
490 excmd(const char **argv, int argc)
491 {
492 	struct cmd {
493 		const char	*name;
494 		void		(*fn)(const char **, int);
495 	} cmds[] = {
496 		{"version",	excmd_version},
497 		{"attach",	excmd_attach},
498 		{"clunk",	excmd_clunk},
499 		{"flush",	excmd_flush},
500 		{"walk",	excmd_walk},
501 	};
502 	size_t i;
503 
504 	if (argc == 0)
505 		return;
506 
507 	for (i = 0; i < sizeof(cmds)/sizeof(cmds[0]); ++i) {
508 		if (!strcmp(cmds[i].name, argv[0])) {
509 			cmds[i].fn(argv, argc);
510 			return;
511 		}
512 	}
513 
514 	log_warnx("Unknown command %s", *argv);
515 }
516 
517 static const char *
518 pp_qid_type(uint8_t type)
519 {
520         switch (type) {
521 	case QTDIR:	return "dir";
522 	case QTAPPEND:	return "append-only";
523 	case QTEXCL:	return "exclusive";
524 	case QTMOUNT:	return "mounted-channel";
525 	case QTAUTH:	return "authentication";
526 	case QTTMP:	return "non-backed-up";
527 	case QTSYMLINK: return "symlink";
528 	case QTFILE:	return "file";
529 	}
530 
531 	return "unknown";
532 }
533 
534 static void
535 pp_qid(const uint8_t *d, uint32_t len)
536 {
537 	uint64_t	path;
538 	uint32_t	vers;
539 	uint8_t		type;
540 
541 	if (len < 13) {
542 		printf("invalid");
543 		return;
544 	}
545 
546 	type = *d++;
547 
548 	memcpy(&vers, d, sizeof(vers));
549 	d += sizeof(vers);
550 	vers = le64toh(vers);
551 
552 	memcpy(&path, d, sizeof(path));
553 	d += sizeof(path);
554 	path = le64toh(path);
555 
556 	printf("qid{path=%"PRIu64" version=%"PRIu32" type=0x%x\"%s\"}",
557 	    path, vers, type, pp_qid_type(type));
558 }
559 
560 static void
561 pp_msg(uint32_t len, uint8_t type, uint16_t tag, const uint8_t *d)
562 {
563 	uint32_t	msize;
564 	uint16_t	slen;
565 
566 	printf("len=%"PRIu32" type=%d[%s] tag=0x%x[%d] ", len,
567 	    type, pp_msg_type(type), tag, tag);
568 
569 	len -= HEADERSIZE;
570 
571 	switch (type) {
572 	case Rversion:
573 		if (len < 6) {
574 			printf("invalid: not enough space for msize "
575 			    "and version provided.");
576 			break;
577 		}
578 
579 		memcpy(&msize, d, sizeof(msize));
580 		d += sizeof(msize);
581 		len -= sizeof(msize);
582 		msize = le32toh(msize);
583 
584 		memcpy(&slen, d, sizeof(slen));
585 		d += sizeof(slen);
586 		len -= sizeof(slen);
587 		slen = le16toh(slen);
588 
589 		if (len != slen) {
590 			printf("invalid: version string length doesn't "
591 			    "match.  Got %d; want %d", slen, len);
592 			break;
593 		}
594 
595 		printf("msize=%"PRIu32" version[%"PRIu16"]=\"",
596 		    msize, slen);
597 		fwrite(d, 1, slen, stdout);
598 		printf("\"");
599 
600 		break;
601 
602 	case Rattach:
603 		pp_qid(d, len);
604 		break;
605 
606 	case Rclunk:
607 		if (len != 0)
608 			printf("invalid Rclunk: %"PRIu32" extra bytes", len);
609 		break;
610 
611 	case Rflush:
612 		if (len != 0)
613 			printf("invalid Rflush: %"PRIu32" extra bytes", len);
614 		break;
615 
616 	case Rwalk:
617 		if (len < 2) {
618 			printf("invaild Rwalk: less than two bytes (%d)",
619 			    (int)len);
620 			break;
621 		}
622 
623 		memcpy(&slen, d, sizeof(slen));
624 		d += sizeof(slen);
625 		len -= sizeof(slen);
626 		slen = le16toh(slen);
627 
628 		if (len != QIDSIZE * slen) {
629 			printf("invalid Rwalk: wanted %d bytes for %d qids "
630 			    "but got %"PRIu32" bytes instead",
631 			    QIDSIZE*slen, slen, len);
632 			break;
633 		}
634 
635 		printf("nwqid=%"PRIu16, slen);
636 
637 		for (; slen != 0; slen--) {
638 			printf(" ");
639 			pp_qid(d, len);
640 			d += QIDSIZE;
641 			len -= QIDSIZE;
642 		}
643 
644 		break;
645 
646 	case Rerror:
647 		memcpy(&slen, d, sizeof(slen));
648 		d += sizeof(slen);
649 		len -= sizeof(slen);
650 		slen = le16toh(slen);
651 
652 		if (slen != len) {
653 			printf("invalid: error string length doesn't "
654 			    "match.  Got %d; want %d", slen, len);
655 			break;
656 		}
657 
658 		printf("error=\"");
659 		fwrite(d, 1, slen, stdout);
660 		printf("\"");
661 
662 		break;
663 
664 	default:
665 		printf("unknown command type");
666 	}
667 
668 	printf("\n");
669 }
670 
671 static void
672 handle_9p(const uint8_t *data, size_t size)
673 {
674         uint32_t len;
675 	uint16_t tag;
676 	uint8_t type;
677 
678 	assert(size >= HEADERSIZE);
679 
680 	memcpy(&len, data, sizeof(len));
681 	data += sizeof(len);
682 
683 	memcpy(&type, data, sizeof(type));
684 	data += sizeof(type);
685 
686 	memcpy(&tag, data, sizeof(tag));
687 	data += sizeof(tag);
688 
689 	len = le32toh(len);
690 	/* type is one byte long, no endianness issues */
691 	tag = le16toh(tag);
692 
693 	clr();
694 	pp_msg(len, type, tag, data);
695 	prompt();
696 }
697 
698 static void
699 clr(void)
700 {
701 	printf("\r");
702 	fflush(stdout);
703 }
704 
705 static void
706 prompt(void)
707 {
708 	printf("%s", PROMPT);
709 	fflush(stdout);
710 }
711 
712 int
713 main(int argc, char **argv)
714 {
715 	int		 ch, sock, handshake;
716 	struct event	 ev_sigint, ev_sigterm;
717 
718 	signal(SIGPIPE, SIG_IGN);
719 
720 	while ((ch = getopt(argc, argv, "C:cH:hK:P:v")) != -1) {
721 		switch (ch) {
722 		case 'C':
723 			crtpath = optarg;
724 			break;
725 		case 'c':
726 			tls = 1;
727 			break;
728 		case 'H':
729 			host = optarg;
730 			break;
731 		case 'h':
732 			usage(0);
733 			break;
734 		case 'K':
735 			keypath = optarg;
736 			break;
737 		case 'P':
738 			port = optarg;
739 			break;
740 		case 'v':
741 			verbose = 1;
742 			break;
743 		default:
744 			usage(1);
745 		}
746 	}
747 
748 	if (host == NULL)
749 		host = "localhost";
750 	if (port == NULL)
751 		port = "1337";
752 
753 	argc -= optind;
754 	argv += optind;
755 
756 	if (argc != 0)
757 		usage(1);
758 	/* if (!tls || (crtpath != NULL || keypath != NULL)) */
759 		/* usage(1); */
760 	if (!tls)
761                 errx(1, "must enable tls (for now)");
762 
763 	log_init(1, LOG_DAEMON);
764 	log_setverbose(verbose);
765 	log_procinit(getprogname());
766 
767 	if ((tlsconf = tls_config_new()) == NULL)
768 		fatalx("tls_config_new");
769 	tls_config_insecure_noverifycert(tlsconf);
770 	tls_config_insecure_noverifyname(tlsconf);
771 	if (tls_config_set_keypair_file(tlsconf, crtpath, keypath) == -1)
772 		fatalx("can't load certs (%s, %s)", crtpath, keypath);
773 
774 	if ((ctx = tls_client()) == NULL)
775 		fatal("tls_client");
776 	if (tls_configure(ctx, tlsconf) == -1)
777 		fatalx("tls_configure: %s", tls_error(ctx));
778 
779 	log_info("connecting to %s:%s...", host, port);
780 
781 	if ((sock = openconn()) == -1)
782 		fatalx("can't connect to %s:%s", host, port);
783 
784 	if (tls_connect_socket(ctx, sock, host) == -1)
785 		fatalx("tls_connect_socket: %s", tls_error(ctx));
786 
787 	for (handshake = 0; !handshake;) {
788 		switch (tls_handshake(ctx)) {
789 		case -1:
790 			fatalx("tls_handshake: %s", tls_error(ctx));
791 		case 0:
792 			handshake = 1;
793 			break;
794 		}
795 	}
796 
797 	log_info("connected!");
798 
799 	mark_nonblock(sock);
800 
801 	event_init();
802 
803 	/* initialize global evb */
804 	if ((evb = evbuffer_new()) == NULL)
805 		fatal("evbuffer_new");
806 
807 	signal_set(&ev_sigint, SIGINT, sig_handler, NULL);
808 	signal_set(&ev_sigterm, SIGINT, sig_handler, NULL);
809 
810 	signal_add(&ev_sigint, NULL);
811 	signal_add(&ev_sigterm, NULL);
812 
813 	bev = bufferevent_new(sock, client_read, client_write, client_error,
814 	    NULL);
815 	if (bev == NULL)
816 		fatal("bufferevent_new");
817 
818 	/* setup tls/io */
819 	event_set(&bev->ev_read, sock, EV_READ, tls_readcb, bev);
820 	event_set(&bev->ev_write, sock, EV_WRITE, tls_writecb, bev);
821 
822 	bufferevent_enable(bev, EV_READ|EV_WRITE);
823 
824 	mark_nonblock(0);
825 	inbev = bufferevent_new(0, repl_read, NULL, repl_error, NULL);
826 	bufferevent_enable(inbev, EV_READ);
827 
828 	prompt();
829 	event_dispatch();
830 
831 	bufferevent_free(bev);
832 	tls_free(ctx);
833 	tls_config_free(tlsconf);
834 	close(sock);
835 
836 	return 0;
837 }