2 * Copyright (c) 2021, 2022 Omar Polo <op@omarpolo.com>
3 * Copyright (c) 2018 Florian Obser <florian@openbsd.org>
4 * Copyright (c) 2004, 2005 Claudio Jeker <claudio@openbsd.org>
5 * Copyright (c) 2004 Esben Norby <norby@openbsd.org>
6 * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
8 * Permission to use, copy, modify, and distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23 #include <sys/socket.h>
24 #include <sys/types.h>
46 #define IMSG_MAXSIZE (MAX_IMSGSIZE - IMSG_HEADER_SIZE)
48 static struct kd_conf *listener_conf;
49 static struct imsgev *iev_main;
51 static void listener_sig_handler(int, short, void *);
52 __dead void listener_shutdown(void);
54 SPLAY_HEAD(clients_tree_id, client) clients;
66 struct bufferevent *bev;
67 SPLAY_ENTRY(client) sp_entry;
70 static void listener_imsg_event_add(struct imsgev *, void *);
71 static void listener_dispatch_client(int, short, void *);
72 static int listener_imsg_compose_client(struct client *, int,
73 uint32_t, const void *, uint16_t);
75 static void apply_config(struct kd_conf *);
76 static void handle_accept(int, short, void *);
78 static void handle_handshake(int, short, void *);
79 static void client_read(struct bufferevent *, void *);
80 static void client_write(struct bufferevent *, void *);
81 static void client_error(struct bufferevent *, short, void *);
82 static void client_tls_readcb(int, short, void *);
83 static void client_tls_writecb(int, short, void *);
84 static void close_conn(struct client *);
85 static void handle_close(int, short, void *);
88 clients_tree_cmp(struct client *a, struct client *b)
92 else if (a->id < b->id)
98 SPLAY_PROTOTYPE(clients_tree_id, client, sp_entry, clients_tree_cmp);
99 SPLAY_GENERATE(clients_tree_id, client, sp_entry, clients_tree_cmp)
102 listener_sig_handler(int sig, short event, void *d)
105 * Normal signal handler rules don't apply because libevent
114 fatalx("unexpected signal %d", sig);
119 listener(int debug, int verbose)
121 struct event ev_sigint, ev_sigterm;
124 /* listener_conf = config_new_empty(); */
126 log_init(debug, LOG_DAEMON);
127 log_setverbose(verbose);
129 if ((pw = getpwnam(KD_USER)) == NULL)
132 if (chroot(pw->pw_dir) == -1)
134 if (chdir("/") == -1)
135 fatal("chdir(\"/\")");
137 setproctitle("listener");
138 log_procinit("listener");
140 if (setgroups(1, &pw->pw_gid) ||
141 setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) ||
142 setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid))
143 fatal("can't drop privileges");
147 /* Setup signal handlers(s). */
148 signal_set(&ev_sigint, SIGINT, listener_sig_handler, NULL);
149 signal_set(&ev_sigterm, SIGTERM, listener_sig_handler, NULL);
151 signal_add(&ev_sigint, NULL);
152 signal_add(&ev_sigterm, NULL);
154 signal(SIGPIPE, SIG_IGN);
155 signal(SIGHUP, SIG_IGN);
157 /* Setup pipe and event handler to the main process. */
158 if ((iev_main = malloc(sizeof(*iev_main))) == NULL)
161 imsg_init(&iev_main->ibuf, 3);
162 iev_main->handler = listener_dispatch_main;
164 /* Setup event handlers. */
165 iev_main->events = EV_READ;
166 event_set(&iev_main->ev, iev_main->ibuf.fd, iev_main->events,
167 iev_main->handler, iev_main);
168 event_add(&iev_main->ev, NULL);
176 listener_shutdown(void)
178 msgbuf_clear(&iev_main->ibuf.w);
179 close(iev_main->ibuf.fd);
181 clear_config(listener_conf);
185 log_info("listener exiting");
190 listener_receive_config(struct imsg *imsg, struct kd_conf **nconf,
191 struct kd_pki_conf **pki)
193 struct kd_listen_conf *listen;
196 switch (imsg->hdr.type) {
197 case IMSG_RECONF_CONF:
199 fatalx("%s: IMSG_RECONF_CONF already in "
200 "progress", __func__);
202 if (IMSG_DATA_SIZE(*imsg) != sizeof(struct kd_conf))
203 fatalx("%s: IMSG_RECONF_CONF wrong length: %lu",
204 __func__, IMSG_DATA_SIZE(*imsg));
205 if ((*nconf = malloc(sizeof(**nconf))) == NULL)
207 memcpy(*nconf, imsg->data, sizeof(**nconf));
208 STAILQ_INIT(&(*nconf)->pki_head);
209 STAILQ_INIT(&(*nconf)->table_head);
210 STAILQ_INIT(&(*nconf)->listen_head);
212 case IMSG_RECONF_PKI:
214 fatalx("%s: IMSG_RECONF_PKI without "
215 "IMSG_RECONF_CONF", __func__);
216 *pki = xcalloc(1, sizeof(**pki));
218 t[IMSG_DATA_SIZE(*imsg)-1] = '\0';
219 strlcpy((*pki)->name, t, sizeof((*pki)->name));
221 case IMSG_RECONF_PKI_CERT:
223 fatalx("%s: IMSG_RECONF_PKI_CERT without "
224 "IMSG_RECONF_PKI", __func__);
225 (*pki)->certlen = IMSG_DATA_SIZE(*imsg);
226 (*pki)->cert = xmemdup(imsg->data, (*pki)->certlen);
228 case IMSG_RECONF_PKI_KEY:
230 fatalx("%s: IMSG_RECONF_PKI_KEY without "
231 "IMSG_RECONF_PKI", __func__);
232 (*pki)->keylen = IMSG_DATA_SIZE(*imsg);
233 (*pki)->key = xmemdup(imsg->data, (*pki)->keylen);
234 STAILQ_INSERT_HEAD(&(*nconf)->pki_head, *pki, entry);
237 case IMSG_RECONF_LISTEN:
239 fatalx("%s: IMSG_RECONF_LISTEN without "
240 "IMSG_RECONF_CONF", __func__);
241 if (IMSG_DATA_SIZE(*imsg) != sizeof(*listen))
242 fatalx("%s: IMSG_RECONF_LISTEN wrong length: %lu",
243 __func__, IMSG_DATA_SIZE(*imsg));
244 listen = xcalloc(1, sizeof(*listen));
245 memcpy(listen, imsg->data, sizeof(*listen));
246 memset(&listen->entry, 0, sizeof(listen->entry));
247 if ((listen->fd = imsg->fd) == -1)
248 fatalx("%s: IMSG_RECONF_LISTEN no fd",
250 listen->auth_table = NULL;
251 memset(&listen->ev, 0, sizeof(listen->ev));
252 STAILQ_INSERT_HEAD(&(*nconf)->listen_head, listen, entry);
254 case IMSG_RECONF_END:
256 fatalx("%s: IMSG_RECONF_END without "
257 "IMSG_RECONF_CONF", __func__);
258 apply_config(*nconf);
265 listener_dispatch_main(int fd, short event, void *d)
267 static struct kd_conf *nconf;
268 static struct kd_pki_conf *pki;
269 struct client *client, find;
271 struct imsgev *iev = d;
272 struct imsgbuf *ibuf;
278 if (event & EV_READ) {
279 if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
280 fatal("imsg_read error");
281 if (n == 0) /* Connection closed. */
284 if (event & EV_WRITE) {
285 if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN)
286 fatal("msgbuf_write");
287 if (n == 0) /* Connection closed. */
292 if ((n = imsg_get(ibuf, &imsg)) == -1)
293 fatal("%s: imsg_get error", __func__);
294 if (n == 0) /* No more messages. */
297 switch (imsg.hdr.type) {
298 case IMSG_CTL_LOG_VERBOSE:
299 if (IMSG_DATA_SIZE(imsg) != sizeof(verbose))
300 fatalx("wrong size for IMSG_CTL_LOG_VERBOSE");
301 memcpy(&verbose, imsg.data, sizeof(verbose));
302 log_setverbose(verbose);
303 SPLAY_FOREACH(client, clients_tree_id, &clients)
304 listener_imsg_compose_client(client,
306 &verbose, sizeof(verbose));
309 if (SPLAY_EMPTY(&clients))
310 listener_imsg_compose_main(IMSG_CTL_DEBUG_END,
311 imsg.hdr.peerid, NULL, 0);
312 SPLAY_FOREACH(client, clients_tree_id, &clients)
313 listener_imsg_compose_client(client,
314 imsg.hdr.type, imsg.hdr.peerid,
315 imsg.data, IMSG_DATA_SIZE(imsg));
317 case IMSG_RECONF_CONF:
318 case IMSG_RECONF_PKI:
319 case IMSG_RECONF_PKI_CERT:
320 case IMSG_RECONF_PKI_KEY:
321 case IMSG_RECONF_LISTEN:
322 case IMSG_RECONF_END:
323 listener_receive_config(&imsg, &nconf, &pki);
326 if (IMSG_DATA_SIZE(imsg) != sizeof(struct kd_auth_proc))
327 fatalx("mismatching size for IMSG_AUTH");
329 find.id = imsg.hdr.peerid;
330 client = SPLAY_FIND(clients_tree_id, &clients, &find);
331 if (client == NULL) {
337 log_info("got fd = -1, auth failed?");
341 imsg_init(&client->iev.ibuf, imsg.fd);
342 client->iev.events = EV_READ;
343 client->iev.handler = listener_dispatch_client;
344 event_set(&client->iev.ev, client->iev.ibuf.fd,
345 client->iev.events, client->iev.handler, client);
346 listener_imsg_compose_client(client, IMSG_AUTH,
347 client->id, imsg.data, IMSG_DATA_SIZE(imsg));
349 client->bev = bufferevent_new(client->fd,
350 client_read, client_write, client_error,
352 if (client->bev == NULL) {
353 log_info("failed to allocate client buffer");
359 evbuffer_unfreeze(client->bev->input, 0);
360 evbuffer_unfreeze(client->bev->output, 1);
363 if (client->lflags & L_TLS) {
364 event_set(&client->bev->ev_read, client->fd,
365 EV_READ, client_tls_readcb, client->bev);
366 event_set(&client->bev->ev_write, client->fd,
367 EV_WRITE, client_tls_writecb, client->bev);
371 * Read or write at least a header before
372 * firing the callbacks. High watermark of 0
373 * to never stop reading/writing; probably to
376 /* bufferevent_setwatermark(client->bev, EV_READ|EV_WRITE, */
377 /* sizeof(struct np_msg_header), 0); */
378 bufferevent_enable(client->bev, EV_READ|EV_WRITE);
382 log_debug("%s: unexpected imsg %d", __func__,
390 listener_imsg_event_add(iev, d);
392 /* This pipe is dead. Remove its event handler. */
394 log_warnx("pipe closed, shutting down...");
395 event_loopexit(NULL);
400 listener_imsg_compose_main(int type, uint32_t peerid, const void *data,
403 return imsg_compose_event(iev_main, type, peerid, 0, -1, data,
408 listener_imsg_event_add(struct imsgev *iev, void *d)
410 iev->events = EV_READ;
411 if (iev->ibuf.w.queued)
412 iev->events |= EV_WRITE;
415 event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, d);
416 event_add(&iev->ev, NULL);
420 listener_dispatch_client(int fd, short event, void *d)
422 struct client find, *client = d;
425 struct imsgbuf *ibuf;
432 if (event & EV_READ) {
433 if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
434 fatal("imsg_read error");
435 if (n == 0) /* Connection closed */
439 if (event & EV_WRITE) {
440 if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN)
441 fatal("msgbuf_write");
442 if (n == 0) /* Connection closed. */
447 if ((n = imsg_get(ibuf, &imsg)) == -1)
448 fatal("%s: imsg_get error", __func__);
449 if (n == 0) /* No more messages. */
452 switch (imsg.hdr.type) {
453 case IMSG_CTL_DEBUG_BACK:
454 case IMSG_CTL_DEBUG_END:
455 listener_imsg_compose_main(imsg.hdr.type,
456 imsg.hdr.peerid, imsg.data, IMSG_DATA_SIZE(imsg));
460 find.id = imsg.hdr.peerid;
461 client = SPLAY_FIND(clients_tree_id, &clients, &find);
462 if (client == NULL) {
463 log_info("got IMSG_BUF but client %d gone",
467 r = bufferevent_write(client->bev, imsg.data,
468 IMSG_DATA_SIZE(imsg));
470 log_warn("%s: bufferevent_write failed",
478 if (IMSG_DATA_SIZE(imsg) != sizeof(client->msize))
479 fatal("IMSG_MSIZE size mismatch: "
480 "got %zu want %zu", IMSG_DATA_SIZE(imsg),
481 sizeof(client->msize));
483 memcpy(&client->msize, imsg.data,
484 sizeof(client->msize));
486 if (client->msize == 0)
487 fatal("IMSG_MSIZE got msize = 0");
488 log_debug("set msize to %d", client->msize);
493 * Both EVBUFFER_READ or EVBUFFER_WRITE should
496 client_error(client->bev, EVBUFFER_READ, client);
500 log_debug("%s: unexpected imsg %d", __func__,
508 listener_imsg_event_add(iev, d);
510 /* This pipe is dead. Remove its handler */
511 log_debug("client proc vanished");
517 listener_imsg_compose_client(struct client *client, int type,
518 uint32_t peerid, const void *data, uint16_t len)
522 if ((ret = imsg_compose(&client->iev.ibuf, type, peerid, 0, -1,
524 listener_imsg_event_add(&client->iev, client);
529 static inline struct kd_pki_conf *
530 pki_by_name(const char *name)
532 struct kd_pki_conf *pki;
534 STAILQ_FOREACH(pki, &listener_conf->pki_head, entry) {
535 if (!strcmp(name, pki->name))
543 apply_config(struct kd_conf *conf)
545 struct kd_pki_conf *pki;
546 struct kd_listen_conf *listen;
549 /* drop any pre-auth inflight connections */
550 SPLAY_FOREACH(c, clients_tree_id, &clients) {
552 * c->event is set only during the handshake and the teardown
553 * of the connection; c->bev is set only after auth. Checking
554 * for both ensures we drop only incoming connection in the
557 if (event_pending(&c->event, EV_READ|EV_WRITE, NULL) &&
559 log_warn("closing in-flight connection due to reload");
564 /* swap the now config with the current one */
565 clear_config(listener_conf);
566 listener_conf = conf;
568 /* prepare the various tls_config */
569 STAILQ_FOREACH(pki, &listener_conf->pki_head, entry) {
570 if ((pki->tlsconf = tls_config_new()) == NULL)
571 fatal("tls_config_new");
572 tls_config_verify_client_optional(pki->tlsconf);
573 tls_config_insecure_noverifycert(pki->tlsconf);
574 if (tls_config_set_keypair_mem(pki->tlsconf,
575 pki->cert, pki->certlen,
576 pki->key, pki->keylen) == -1)
577 fatalx("tls_config_set_keypair_mem: %s",
578 tls_config_error(pki->tlsconf));
581 /* prepare and kickoff the listeners */
582 STAILQ_FOREACH(listen, &listener_conf->listen_head, entry) {
583 if ((listen->ctx = tls_server()) == NULL)
586 pki = pki_by_name(listen->pki);
587 if (tls_configure(listen->ctx, pki->tlsconf) == -1)
588 fatalx("tls_configure: %s",
589 tls_config_error(pki->tlsconf));
591 event_set(&listen->ev, listen->fd, EV_READ|EV_PERSIST,
592 handle_accept, listen);
593 event_add(&listen->ev, NULL);
598 yield_r(struct client *c, void (*fn)(int, short, void *))
600 if (event_pending(&c->event, EV_WRITE|EV_READ, NULL))
601 event_del(&c->event);
602 event_set(&c->event, c->fd, EV_READ, fn, c);
603 event_add(&c->event, NULL);
607 yield_w(struct client *c, void (*fn)(int, short, void *))
609 if (event_pending(&c->event, EV_WRITE|EV_READ, NULL))
610 event_del(&c->event);
611 event_set(&c->event, c->fd, EV_WRITE, fn, c);
612 event_add(&c->event, NULL);
616 handle_accept(int fd, short ev, void *data)
618 static uint32_t counter;
619 struct kd_listen_conf *listen = data;
623 if ((s = accept(fd, NULL, NULL)) == -1) {
628 c = xcalloc(1, sizeof(*c));
631 c->lflags = listen->flags;
634 if (tls_accept_socket(listen->ctx, &c->ctx, s) == -1) {
635 log_warnx("tls_accept_socket: %s",
636 tls_error(listen->ctx));
645 SPLAY_INSERT(clients_tree_id, &clients, c);
647 /* initialize the event */
648 event_set(&c->event, c->fd, EV_READ, NULL, NULL);
650 yield_r(c, handle_handshake);
654 handle_handshake(int fd, short ev, void *data)
656 struct client *c = data;
657 struct kd_auth_req auth;
661 switch (r = tls_handshake(c->ctx)) {
662 case TLS_WANT_POLLIN:
663 yield_r(c, handle_handshake);
665 case TLS_WANT_POLLOUT:
666 yield_w(c, handle_handshake);
669 log_debug("handhsake failed: %s", tls_error(c->ctx));
674 if ((hash = tls_peer_cert_hash(c->ctx)) == NULL) {
675 log_warnx("client didn't provide certificate");
680 memset(&auth, 0, sizeof(auth));
681 auth.listen_id = c->lid;
682 strlcpy(auth.hash, hash, sizeof(auth.hash));
683 log_debug("sending hash %s", auth.hash);
685 listener_imsg_compose_main(IMSG_AUTH_TLS, c->id,
686 &auth, sizeof(auth));
690 client_read(struct bufferevent *bev, void *d)
692 struct client *client = d;
693 struct evbuffer *src = EVBUFFER_INPUT(bev);
698 evlen = EVBUFFER_LENGTH(src);
700 if (client->left != 0) {
701 /* wait to fill a whole imsg if possible */
702 if (client->left >= IMSG_MAXSIZE &&
703 evlen < IMSG_MAXSIZE)
706 len = MIN(client->left, evlen);
707 len = MIN(len, IMSG_MAXSIZE);
709 listener_imsg_compose_client(client, IMSG_BUF_CONT,
710 client->id, EVBUFFER_DATA(src), len);
711 evbuffer_drain(src, len);
719 memcpy(&len, EVBUFFER_DATA(src), sizeof(len));
721 log_debug("expecting a message %"PRIu32" bytes long "
722 "(of wich %zu already read)", len, evlen);
724 if (len < HEADERSIZE) {
725 log_warnx("invalid message size %d (too low)", len);
726 client_error(bev, EVBUFFER_READ, client);
730 if (len > client->msize) {
731 log_warnx("incoming message bigger than msize "
732 "(%"PRIu32" vs %"PRIu32")", len, client->msize);
733 client_error(bev, EVBUFFER_READ, client);
737 if (len > IMSG_MAXSIZE && evlen >= len) {
738 listener_imsg_compose_client(client, IMSG_BUF,
739 client->id, EVBUFFER_DATA(src), IMSG_MAXSIZE);
740 evbuffer_drain(src, IMSG_MAXSIZE);
741 client->left = len - IMSG_MAXSIZE;
748 listener_imsg_compose_client(client, IMSG_BUF, client->id,
749 EVBUFFER_DATA(src), len);
750 evbuffer_drain(src, len);
755 client_write(struct bufferevent *bev, void *d)
758 * here we can do some fancy logic like deciding when to call
760 * (*bev->errorcb)(bev, EVBUFFER_WRITE, bev->cbarg)
762 * to signal the end of the transaction.
769 client_error(struct bufferevent *bev, short err, void *d)
771 struct client *client = d;
772 struct evbuffer *buf;
774 if (err & EVBUFFER_ERROR) {
775 if (errno == EFBIG) {
776 bufferevent_enable(bev, EV_READ);
779 log_debug("buffer event error");
784 if (err & EVBUFFER_EOF) {
789 if (err & (EVBUFFER_READ|EVBUFFER_WRITE)) {
790 bufferevent_disable(bev, EV_READ|EV_WRITE);
792 buf = EVBUFFER_OUTPUT(client->bev);
793 if (EVBUFFER_LENGTH(buf) != 0) {
794 /* finish writing all the data first */
795 bufferevent_enable(client->bev, EV_WRITE);
803 log_warnx("unknown event error, closing client connection");
808 client_tls_readcb(int fd, short event, void *d)
810 struct bufferevent *bufev = d;
811 struct client *client = bufev->cbarg;
812 char buf[IBUF_READ_SIZE];
813 int what = EVBUFFER_READ;
814 int howmuch = IBUF_READ_SIZE;
818 if (event == EV_TIMEOUT) {
819 what |= EVBUFFER_TIMEOUT;
823 if (bufev->wm_read.high != 0)
824 howmuch = MIN(sizeof(buf), bufev->wm_read.high);
826 switch (ret = tls_read(client->ctx, buf, howmuch)) {
827 case TLS_WANT_POLLIN:
828 case TLS_WANT_POLLOUT:
831 what |= EVBUFFER_ERROR;
837 what |= EVBUFFER_EOF;
841 if (evbuffer_add(bufev->input, buf, len) == -1) {
842 what |= EVBUFFER_ERROR;
846 event_add(&bufev->ev_read, NULL);
848 len = EVBUFFER_LENGTH(bufev->input);
849 if (bufev->wm_read.low != 0 && len < bufev->wm_read.low)
851 if (bufev->wm_read.high != 0 && len > bufev->wm_read.high) {
853 * here we could implement some read pressure
858 if (bufev->readcb != NULL)
859 (*bufev->readcb)(bufev, bufev->cbarg);
864 event_add(&bufev->ev_read, NULL);
868 (*bufev->errorcb)(bufev, what, bufev->cbarg);
872 client_tls_writecb(int fd, short event, void *d)
874 struct bufferevent *bufev = d;
875 struct client *client = bufev->cbarg;
878 short what = EVBUFFER_WRITE;
880 if (event == EV_TIMEOUT) {
881 what |= EVBUFFER_TIMEOUT;
885 if (EVBUFFER_LENGTH(bufev->output) != 0) {
886 ret = tls_write(client->ctx,
887 EVBUFFER_DATA(bufev->output),
888 EVBUFFER_LENGTH(bufev->output));
890 case TLS_WANT_POLLIN:
891 case TLS_WANT_POLLOUT:
894 what |= EVBUFFER_ERROR;
898 evbuffer_drain(bufev->output, len);
901 if (EVBUFFER_LENGTH(bufev->output) != 0)
902 event_add(&bufev->ev_write, NULL);
904 if (bufev->writecb != NULL &&
905 EVBUFFER_LENGTH(bufev->output) <= bufev->wm_write.low)
906 (*bufev->writecb)(bufev, bufev->cbarg);
910 event_add(&bufev->ev_write, NULL);
914 (*bufev->errorcb)(bufev, what, bufev->cbarg);
918 close_conn(struct client *c)
920 log_debug("closing connection");
922 SPLAY_REMOVE(clients_tree_id, &clients, c);
924 if (c->iev.ibuf.fd != -1) {
925 listener_imsg_compose_client(c, IMSG_CONN_GONE, 0, NULL, 0);
926 imsg_flush(&c->iev.ibuf);
927 msgbuf_clear(&c->iev.ibuf.w);
928 event_del(&c->iev.ev);
929 close(c->iev.ibuf.fd);
932 handle_close(c->fd, 0, c);
936 handle_close(int fd, short ev, void *d)
938 struct client *c = d;
940 switch (tls_close(c->ctx)) {
941 case TLS_WANT_POLLIN:
942 yield_r(c, handle_close);
944 case TLS_WANT_POLLOUT:
945 yield_w(c, handle_close);
949 event_del(&c->event);