2 d93ecf7d 2022-12-14 stsp * Copyright (c) 2022 Stefan Sperling <stsp@openbsd.org>
4 d93ecf7d 2022-12-14 stsp * Permission to use, copy, modify, and distribute this software for any
5 d93ecf7d 2022-12-14 stsp * purpose with or without fee is hereby granted, provided that the above
6 d93ecf7d 2022-12-14 stsp * copyright notice and this permission notice appear in all copies.
8 d93ecf7d 2022-12-14 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 d93ecf7d 2022-12-14 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 d93ecf7d 2022-12-14 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 d93ecf7d 2022-12-14 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 d93ecf7d 2022-12-14 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 d93ecf7d 2022-12-14 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 d93ecf7d 2022-12-14 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 d93ecf7d 2022-12-14 stsp #include <sys/types.h>
18 d93ecf7d 2022-12-14 stsp #include <sys/queue.h>
19 d93ecf7d 2022-12-14 stsp #include <sys/socket.h>
20 d93ecf7d 2022-12-14 stsp #include <sys/uio.h>
22 d93ecf7d 2022-12-14 stsp #include <errno.h>
23 d93ecf7d 2022-12-14 stsp #include <event.h>
24 d93ecf7d 2022-12-14 stsp #include <siphash.h>
25 d93ecf7d 2022-12-14 stsp #include <stdint.h>
26 d93ecf7d 2022-12-14 stsp #include <stdio.h>
27 d93ecf7d 2022-12-14 stsp #include <stdlib.h>
28 d93ecf7d 2022-12-14 stsp #include <string.h>
29 d93ecf7d 2022-12-14 stsp #include <imsg.h>
30 d93ecf7d 2022-12-14 stsp #include <limits.h>
31 d93ecf7d 2022-12-14 stsp #include <sha1.h>
32 d93ecf7d 2022-12-14 stsp #include <signal.h>
33 d93ecf7d 2022-12-14 stsp #include <unistd.h>
35 d93ecf7d 2022-12-14 stsp #include "got_error.h"
37 d93ecf7d 2022-12-14 stsp #include "gotd.h"
38 d93ecf7d 2022-12-14 stsp #include "log.h"
39 d93ecf7d 2022-12-14 stsp #include "listen.h"
41 d93ecf7d 2022-12-14 stsp #ifndef nitems
42 d93ecf7d 2022-12-14 stsp #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
45 d93ecf7d 2022-12-14 stsp struct gotd_listen_client {
46 d93ecf7d 2022-12-14 stsp STAILQ_ENTRY(gotd_listen_client) entry;
47 d93ecf7d 2022-12-14 stsp uint32_t id;
51 d93ecf7d 2022-12-14 stsp STAILQ_HEAD(gotd_listen_clients, gotd_listen_client);
53 d93ecf7d 2022-12-14 stsp static struct gotd_listen_clients gotd_listen_clients[GOTD_CLIENT_TABLE_SIZE];
54 d93ecf7d 2022-12-14 stsp static SIPHASH_KEY clients_hash_key;
55 d93ecf7d 2022-12-14 stsp static volatile int listen_client_cnt;
56 d93ecf7d 2022-12-14 stsp static int inflight;
58 7a0564e3 2022-12-30 stsp struct gotd_uid_connection_counter {
59 7a0564e3 2022-12-30 stsp STAILQ_ENTRY(gotd_uid_connection_counter) entry;
61 7a0564e3 2022-12-30 stsp int nconnections;
63 7a0564e3 2022-12-30 stsp STAILQ_HEAD(gotd_client_uids, gotd_uid_connection_counter);
64 7a0564e3 2022-12-30 stsp static struct gotd_client_uids gotd_client_uids[GOTD_CLIENT_TABLE_SIZE];
65 7a0564e3 2022-12-30 stsp static SIPHASH_KEY uid_hash_key;
67 d93ecf7d 2022-12-14 stsp static struct {
69 d93ecf7d 2022-12-14 stsp const char *title;
71 d93ecf7d 2022-12-14 stsp struct gotd_imsgev iev;
72 d93ecf7d 2022-12-14 stsp struct gotd_imsgev pause;
73 d93ecf7d 2022-12-14 stsp } gotd_listen;
75 d93ecf7d 2022-12-14 stsp static int inflight;
77 d93ecf7d 2022-12-14 stsp static void listen_shutdown(void);
80 d93ecf7d 2022-12-14 stsp listen_sighdlr(int sig, short event, void *arg)
83 d93ecf7d 2022-12-14 stsp * Normal signal handler rules don't apply because libevent
84 d93ecf7d 2022-12-14 stsp * decouples for us.
87 d93ecf7d 2022-12-14 stsp switch (sig) {
88 d93ecf7d 2022-12-14 stsp case SIGHUP:
90 d93ecf7d 2022-12-14 stsp case SIGUSR1:
92 d93ecf7d 2022-12-14 stsp case SIGTERM:
93 d93ecf7d 2022-12-14 stsp case SIGINT:
94 d93ecf7d 2022-12-14 stsp listen_shutdown();
95 d93ecf7d 2022-12-14 stsp /* NOTREACHED */
98 d93ecf7d 2022-12-14 stsp fatalx("unexpected signal");
102 d93ecf7d 2022-12-14 stsp static uint64_t
103 d93ecf7d 2022-12-14 stsp client_hash(uint32_t client_id)
105 d93ecf7d 2022-12-14 stsp return SipHash24(&clients_hash_key, &client_id, sizeof(client_id));
108 d93ecf7d 2022-12-14 stsp static void
109 d93ecf7d 2022-12-14 stsp add_client(struct gotd_listen_client *client)
111 d93ecf7d 2022-12-14 stsp uint64_t slot = client_hash(client->id) % nitems(gotd_listen_clients);
112 d93ecf7d 2022-12-14 stsp STAILQ_INSERT_HEAD(&gotd_listen_clients[slot], client, entry);
113 d93ecf7d 2022-12-14 stsp listen_client_cnt++;
116 d93ecf7d 2022-12-14 stsp static struct gotd_listen_client *
117 d93ecf7d 2022-12-14 stsp find_client(uint32_t client_id)
119 d93ecf7d 2022-12-14 stsp uint64_t slot;
120 d93ecf7d 2022-12-14 stsp struct gotd_listen_client *c;
122 d93ecf7d 2022-12-14 stsp slot = client_hash(client_id) % nitems(gotd_listen_clients);
123 d93ecf7d 2022-12-14 stsp STAILQ_FOREACH(c, &gotd_listen_clients[slot], entry) {
124 d93ecf7d 2022-12-14 stsp if (c->id == client_id)
128 d93ecf7d 2022-12-14 stsp return NULL;
131 d93ecf7d 2022-12-14 stsp static uint32_t
132 d93ecf7d 2022-12-14 stsp get_client_id(void)
134 d93ecf7d 2022-12-14 stsp int duplicate = 0;
135 d93ecf7d 2022-12-14 stsp uint32_t id;
138 d93ecf7d 2022-12-14 stsp id = arc4random();
139 d93ecf7d 2022-12-14 stsp duplicate = (find_client(id) != NULL);
140 d93ecf7d 2022-12-14 stsp } while (duplicate || id == 0);
145 7a0564e3 2022-12-30 stsp static uint64_t
146 7a0564e3 2022-12-30 stsp uid_hash(uid_t euid)
148 7a0564e3 2022-12-30 stsp return SipHash24(&uid_hash_key, &euid, sizeof(euid));
151 7a0564e3 2022-12-30 stsp static void
152 7a0564e3 2022-12-30 stsp add_uid_connection_counter(struct gotd_uid_connection_counter *counter)
154 7a0564e3 2022-12-30 stsp uint64_t slot = uid_hash(counter->euid) % nitems(gotd_client_uids);
155 7a0564e3 2022-12-30 stsp STAILQ_INSERT_HEAD(&gotd_client_uids[slot], counter, entry);
158 7a0564e3 2022-12-30 stsp static void
159 7a0564e3 2022-12-30 stsp remove_uid_connection_counter(struct gotd_uid_connection_counter *counter)
161 7a0564e3 2022-12-30 stsp uint64_t slot = uid_hash(counter->euid) % nitems(gotd_client_uids);
162 7a0564e3 2022-12-30 stsp STAILQ_REMOVE(&gotd_client_uids[slot], counter,
163 7a0564e3 2022-12-30 stsp gotd_uid_connection_counter, entry);
166 7a0564e3 2022-12-30 stsp static struct gotd_uid_connection_counter *
167 7a0564e3 2022-12-30 stsp find_uid_connection_counter(uid_t euid)
169 7a0564e3 2022-12-30 stsp uint64_t slot;
170 7a0564e3 2022-12-30 stsp struct gotd_uid_connection_counter *c;
172 7a0564e3 2022-12-30 stsp slot = uid_hash(euid) % nitems(gotd_client_uids);
173 7a0564e3 2022-12-30 stsp STAILQ_FOREACH(c, &gotd_client_uids[slot], entry) {
174 7a0564e3 2022-12-30 stsp if (c->euid == euid)
178 7a0564e3 2022-12-30 stsp return NULL;
181 d93ecf7d 2022-12-14 stsp static const struct got_error *
182 d93ecf7d 2022-12-14 stsp disconnect(struct gotd_listen_client *client)
184 7a0564e3 2022-12-30 stsp struct gotd_uid_connection_counter *counter;
185 d93ecf7d 2022-12-14 stsp uint64_t slot;
186 d93ecf7d 2022-12-14 stsp int client_fd;
188 d93ecf7d 2022-12-14 stsp log_debug("client on fd %d disconnecting", client->fd);
190 d93ecf7d 2022-12-14 stsp slot = client_hash(client->id) % nitems(gotd_listen_clients);
191 d93ecf7d 2022-12-14 stsp STAILQ_REMOVE(&gotd_listen_clients[slot], client,
192 d93ecf7d 2022-12-14 stsp gotd_listen_client, entry);
194 7a0564e3 2022-12-30 stsp counter = find_uid_connection_counter(client->euid);
195 7a0564e3 2022-12-30 stsp if (counter) {
196 7a0564e3 2022-12-30 stsp if (counter->nconnections > 0)
197 7a0564e3 2022-12-30 stsp counter->nconnections--;
198 7a0564e3 2022-12-30 stsp if (counter->nconnections == 0) {
199 7a0564e3 2022-12-30 stsp remove_uid_connection_counter(counter);
200 7a0564e3 2022-12-30 stsp free(counter);
204 d93ecf7d 2022-12-14 stsp client_fd = client->fd;
205 d93ecf7d 2022-12-14 stsp free(client);
206 d93ecf7d 2022-12-14 stsp inflight--;
207 d93ecf7d 2022-12-14 stsp listen_client_cnt--;
208 d93ecf7d 2022-12-14 stsp if (close(client_fd) == -1)
209 d93ecf7d 2022-12-14 stsp return got_error_from_errno("close");
211 d93ecf7d 2022-12-14 stsp return NULL;
215 d93ecf7d 2022-12-14 stsp accept_reserve(int fd, struct sockaddr *addr, socklen_t *addrlen,
216 d93ecf7d 2022-12-14 stsp int reserve, volatile int *counter)
220 d93ecf7d 2022-12-14 stsp if (getdtablecount() + reserve +
221 d93ecf7d 2022-12-14 stsp ((*counter + 1) * GOTD_FD_NEEDED) >= getdtablesize()) {
222 d93ecf7d 2022-12-14 stsp log_debug("inflight fds exceeded");
223 d93ecf7d 2022-12-14 stsp errno = EMFILE;
227 d93ecf7d 2022-12-14 stsp if ((ret = accept4(fd, addr, addrlen,
228 d93ecf7d 2022-12-14 stsp SOCK_NONBLOCK | SOCK_CLOEXEC)) > -1) {
229 d93ecf7d 2022-12-14 stsp (*counter)++;
232 d93ecf7d 2022-12-14 stsp return ret;
235 d93ecf7d 2022-12-14 stsp static void
236 d93ecf7d 2022-12-14 stsp gotd_accept_paused(int fd, short event, void *arg)
238 d93ecf7d 2022-12-14 stsp event_add(&gotd_listen.iev.ev, NULL);
241 d93ecf7d 2022-12-14 stsp static void
242 d93ecf7d 2022-12-14 stsp gotd_accept(int fd, short event, void *arg)
244 d93ecf7d 2022-12-14 stsp struct gotd_imsgev *iev = arg;
245 d93ecf7d 2022-12-14 stsp struct sockaddr_storage ss;
246 d93ecf7d 2022-12-14 stsp struct timeval backoff;
247 d93ecf7d 2022-12-14 stsp socklen_t len;
248 d93ecf7d 2022-12-14 stsp int s = -1;
249 d93ecf7d 2022-12-14 stsp struct gotd_listen_client *client = NULL;
250 7a0564e3 2022-12-30 stsp struct gotd_uid_connection_counter *counter = NULL;
251 d93ecf7d 2022-12-14 stsp struct gotd_imsg_connect iconn;
252 365cf0f3 2022-12-29 stsp uid_t euid;
253 365cf0f3 2022-12-29 stsp gid_t egid;
255 d93ecf7d 2022-12-14 stsp backoff.tv_sec = 1;
256 d93ecf7d 2022-12-14 stsp backoff.tv_usec = 0;
258 d93ecf7d 2022-12-14 stsp if (event_add(&gotd_listen.iev.ev, NULL) == -1) {
259 d93ecf7d 2022-12-14 stsp log_warn("event_add");
262 d93ecf7d 2022-12-14 stsp if (event & EV_TIMEOUT)
265 d93ecf7d 2022-12-14 stsp len = sizeof(ss);
267 d93ecf7d 2022-12-14 stsp /* Other backoff conditions apart from EMFILE/ENFILE? */
268 d93ecf7d 2022-12-14 stsp s = accept_reserve(fd, (struct sockaddr *)&ss, &len, GOTD_FD_RESERVE,
269 d93ecf7d 2022-12-14 stsp &inflight);
270 d93ecf7d 2022-12-14 stsp if (s == -1) {
271 d93ecf7d 2022-12-14 stsp switch (errno) {
272 d93ecf7d 2022-12-14 stsp case EINTR:
273 d93ecf7d 2022-12-14 stsp case EWOULDBLOCK:
274 d93ecf7d 2022-12-14 stsp case ECONNABORTED:
276 d93ecf7d 2022-12-14 stsp case EMFILE:
277 d93ecf7d 2022-12-14 stsp case ENFILE:
278 d93ecf7d 2022-12-14 stsp event_del(&gotd_listen.iev.ev);
279 d93ecf7d 2022-12-14 stsp evtimer_add(&gotd_listen.pause.ev, &backoff);
282 d93ecf7d 2022-12-14 stsp log_warn("accept");
287 d93ecf7d 2022-12-14 stsp if (listen_client_cnt >= GOTD_MAXCLIENTS)
290 365cf0f3 2022-12-29 stsp if (getpeereid(s, &euid, &egid) == -1) {
291 365cf0f3 2022-12-29 stsp log_warn("getpeerid");
295 7a0564e3 2022-12-30 stsp counter = find_uid_connection_counter(euid);
296 7a0564e3 2022-12-30 stsp if (counter == NULL) {
297 7a0564e3 2022-12-30 stsp counter = calloc(1, sizeof(*counter));
298 7a0564e3 2022-12-30 stsp if (counter == NULL) {
299 7a0564e3 2022-12-30 stsp log_warn("%s: calloc", __func__);
302 7a0564e3 2022-12-30 stsp counter->euid = euid;
303 7a0564e3 2022-12-30 stsp counter->nconnections = 1;
304 7a0564e3 2022-12-30 stsp add_uid_connection_counter(counter);
306 7a0564e3 2022-12-30 stsp if (counter->nconnections >= GOTD_MAX_CONN_PER_UID) {
307 7a0564e3 2022-12-30 stsp log_warnx("maximum connections exceeded for uid %d",
311 7a0564e3 2022-12-30 stsp counter->nconnections++;
314 d93ecf7d 2022-12-14 stsp client = calloc(1, sizeof(*client));
315 d93ecf7d 2022-12-14 stsp if (client == NULL) {
316 d93ecf7d 2022-12-14 stsp log_warn("%s: calloc", __func__);
319 d93ecf7d 2022-12-14 stsp client->id = get_client_id();
320 d93ecf7d 2022-12-14 stsp client->fd = s;
321 7a0564e3 2022-12-30 stsp client->euid = euid;
323 d93ecf7d 2022-12-14 stsp add_client(client);
324 365cf0f3 2022-12-29 stsp log_debug("%s: new client connected on fd %d uid %d gid %d", __func__,
325 365cf0f3 2022-12-29 stsp client->fd, euid, egid);
327 d93ecf7d 2022-12-14 stsp memset(&iconn, 0, sizeof(iconn));
328 d93ecf7d 2022-12-14 stsp iconn.client_id = client->id;
329 365cf0f3 2022-12-29 stsp iconn.euid = euid;
330 365cf0f3 2022-12-29 stsp iconn.egid = egid;
331 d93ecf7d 2022-12-14 stsp s = dup(client->fd);
332 d93ecf7d 2022-12-14 stsp if (s == -1) {
333 d93ecf7d 2022-12-14 stsp log_warn("%s: dup", __func__);
336 d93ecf7d 2022-12-14 stsp if (gotd_imsg_compose_event(iev, GOTD_IMSG_CONNECT, PROC_LISTEN, s,
337 d93ecf7d 2022-12-14 stsp &iconn, sizeof(iconn)) == -1) {
338 d93ecf7d 2022-12-14 stsp log_warn("imsg compose CONNECT");
344 d93ecf7d 2022-12-14 stsp inflight--;
345 d93ecf7d 2022-12-14 stsp if (client)
346 d93ecf7d 2022-12-14 stsp disconnect(client);
347 d93ecf7d 2022-12-14 stsp if (s != -1)
351 d93ecf7d 2022-12-14 stsp static const struct got_error *
352 d93ecf7d 2022-12-14 stsp recv_disconnect(struct imsg *imsg)
354 d93ecf7d 2022-12-14 stsp struct gotd_imsg_disconnect idisconnect;
355 d93ecf7d 2022-12-14 stsp size_t datalen;
356 d93ecf7d 2022-12-14 stsp struct gotd_listen_client *client = NULL;
358 d93ecf7d 2022-12-14 stsp datalen = imsg->hdr.len - IMSG_HEADER_SIZE;
359 d93ecf7d 2022-12-14 stsp if (datalen != sizeof(idisconnect))
360 d93ecf7d 2022-12-14 stsp return got_error(GOT_ERR_PRIVSEP_LEN);
361 d93ecf7d 2022-12-14 stsp memcpy(&idisconnect, imsg->data, sizeof(idisconnect));
363 d93ecf7d 2022-12-14 stsp log_debug("client disconnecting");
365 d93ecf7d 2022-12-14 stsp client = find_client(idisconnect.client_id);
366 d93ecf7d 2022-12-14 stsp if (client == NULL)
367 d93ecf7d 2022-12-14 stsp return got_error(GOT_ERR_CLIENT_ID);
369 d93ecf7d 2022-12-14 stsp return disconnect(client);
372 d93ecf7d 2022-12-14 stsp static void
373 d93ecf7d 2022-12-14 stsp listen_dispatch(int fd, short event, void *arg)
375 d93ecf7d 2022-12-14 stsp const struct got_error *err = NULL;
376 d93ecf7d 2022-12-14 stsp struct gotd_imsgev *iev = arg;
377 d93ecf7d 2022-12-14 stsp struct imsgbuf *ibuf = &iev->ibuf;
378 d93ecf7d 2022-12-14 stsp struct imsg imsg;
380 d93ecf7d 2022-12-14 stsp int shut = 0;
382 d93ecf7d 2022-12-14 stsp if (event & EV_READ) {
383 d93ecf7d 2022-12-14 stsp if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
384 d93ecf7d 2022-12-14 stsp fatal("imsg_read error");
385 d93ecf7d 2022-12-14 stsp if (n == 0) /* Connection closed. */
389 d93ecf7d 2022-12-14 stsp if (event & EV_WRITE) {
390 d93ecf7d 2022-12-14 stsp n = msgbuf_write(&ibuf->w);
391 d93ecf7d 2022-12-14 stsp if (n == -1 && errno != EAGAIN)
392 d93ecf7d 2022-12-14 stsp fatal("msgbuf_write");
393 d93ecf7d 2022-12-14 stsp if (n == 0) /* Connection closed. */
398 d93ecf7d 2022-12-14 stsp if ((n = imsg_get(ibuf, &imsg)) == -1)
399 d93ecf7d 2022-12-14 stsp fatal("%s: imsg_get", __func__);
400 d93ecf7d 2022-12-14 stsp if (n == 0) /* No more messages. */
403 d93ecf7d 2022-12-14 stsp switch (imsg.hdr.type) {
404 d93ecf7d 2022-12-14 stsp case GOTD_IMSG_DISCONNECT:
405 d93ecf7d 2022-12-14 stsp err = recv_disconnect(&imsg);
407 d93ecf7d 2022-12-14 stsp log_warnx("%s: disconnect: %s",
408 d93ecf7d 2022-12-14 stsp gotd_listen.title, err->msg);
411 d93ecf7d 2022-12-14 stsp log_debug("%s: unexpected imsg %d", gotd_listen.title,
412 d93ecf7d 2022-12-14 stsp imsg.hdr.type);
416 d93ecf7d 2022-12-14 stsp imsg_free(&imsg);
419 d93ecf7d 2022-12-14 stsp if (!shut) {
420 d93ecf7d 2022-12-14 stsp gotd_imsg_event_add(iev);
422 d93ecf7d 2022-12-14 stsp /* This pipe is dead. Remove its event handler */
423 d93ecf7d 2022-12-14 stsp event_del(&iev->ev);
424 d93ecf7d 2022-12-14 stsp event_loopexit(NULL);
429 d93ecf7d 2022-12-14 stsp listen_main(const char *title, int gotd_socket)
431 d93ecf7d 2022-12-14 stsp struct gotd_imsgev iev;
432 d93ecf7d 2022-12-14 stsp struct event evsigint, evsigterm, evsighup, evsigusr1;
434 c602198a 2022-12-30 stsp arc4random_buf(&clients_hash_key, sizeof(clients_hash_key));
435 7a0564e3 2022-12-30 stsp arc4random_buf(&uid_hash_key, sizeof(uid_hash_key));
437 d93ecf7d 2022-12-14 stsp gotd_listen.title = title;
438 d93ecf7d 2022-12-14 stsp gotd_listen.pid = getpid();
439 d93ecf7d 2022-12-14 stsp gotd_listen.fd = gotd_socket;
441 d93ecf7d 2022-12-14 stsp signal_set(&evsigint, SIGINT, listen_sighdlr, NULL);
442 d93ecf7d 2022-12-14 stsp signal_set(&evsigterm, SIGTERM, listen_sighdlr, NULL);
443 d93ecf7d 2022-12-14 stsp signal_set(&evsighup, SIGHUP, listen_sighdlr, NULL);
444 d93ecf7d 2022-12-14 stsp signal_set(&evsigusr1, SIGUSR1, listen_sighdlr, NULL);
445 d93ecf7d 2022-12-14 stsp signal(SIGPIPE, SIG_IGN);
447 d93ecf7d 2022-12-14 stsp signal_add(&evsigint, NULL);
448 d93ecf7d 2022-12-14 stsp signal_add(&evsigterm, NULL);
449 d93ecf7d 2022-12-14 stsp signal_add(&evsighup, NULL);
450 d93ecf7d 2022-12-14 stsp signal_add(&evsigusr1, NULL);
452 d93ecf7d 2022-12-14 stsp imsg_init(&iev.ibuf, GOTD_FILENO_MSG_PIPE);
453 d93ecf7d 2022-12-14 stsp iev.handler = listen_dispatch;
454 d93ecf7d 2022-12-14 stsp iev.events = EV_READ;
455 d93ecf7d 2022-12-14 stsp iev.handler_arg = NULL;
456 d93ecf7d 2022-12-14 stsp event_set(&iev.ev, iev.ibuf.fd, EV_READ, listen_dispatch, &iev);
457 d93ecf7d 2022-12-14 stsp if (event_add(&iev.ev, NULL) == -1)
458 d93ecf7d 2022-12-14 stsp fatalx("event add");
460 d93ecf7d 2022-12-14 stsp event_set(&gotd_listen.iev.ev, gotd_listen.fd, EV_READ | EV_PERSIST,
461 d93ecf7d 2022-12-14 stsp gotd_accept, &iev);
462 d93ecf7d 2022-12-14 stsp if (event_add(&gotd_listen.iev.ev, NULL))
463 d93ecf7d 2022-12-14 stsp fatalx("event add");
464 d93ecf7d 2022-12-14 stsp evtimer_set(&gotd_listen.pause.ev, gotd_accept_paused, NULL);
466 d93ecf7d 2022-12-14 stsp event_dispatch();
468 d93ecf7d 2022-12-14 stsp listen_shutdown();
471 d93ecf7d 2022-12-14 stsp static void
472 d93ecf7d 2022-12-14 stsp listen_shutdown(void)
474 d93ecf7d 2022-12-14 stsp log_debug("%s: shutting down", gotd_listen.title);
476 d93ecf7d 2022-12-14 stsp if (gotd_listen.fd != -1)
477 d93ecf7d 2022-12-14 stsp close(gotd_listen.fd);
