2 a596b957 2022-07-14 tracey * Copyright (c) 2016, 2019, 2020-2021 Tracey Emery <tracey@traceyemery.net>
3 a596b957 2022-07-14 tracey * Copyright (c) 2015 Mike Larkin <mlarkin@openbsd.org>
4 a596b957 2022-07-14 tracey * Copyright (c) 2013 David Gwynne <dlg@openbsd.org>
5 a596b957 2022-07-14 tracey * Copyright (c) 2013 Florian Obser <florian@openbsd.org>
7 a596b957 2022-07-14 tracey * Permission to use, copy, modify, and distribute this software for any
8 a596b957 2022-07-14 tracey * purpose with or without fee is hereby granted, provided that the above
9 a596b957 2022-07-14 tracey * copyright notice and this permission notice appear in all copies.
11 a596b957 2022-07-14 tracey * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 a596b957 2022-07-14 tracey * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 a596b957 2022-07-14 tracey * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 a596b957 2022-07-14 tracey * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 a596b957 2022-07-14 tracey * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 a596b957 2022-07-14 tracey * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 a596b957 2022-07-14 tracey * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 a596b957 2022-07-14 tracey #include <sys/param.h>
21 a596b957 2022-07-14 tracey #include <sys/ioctl.h>
22 a596b957 2022-07-14 tracey #include <sys/queue.h>
23 a596b957 2022-07-14 tracey #include <sys/wait.h>
24 a596b957 2022-07-14 tracey #include <sys/uio.h>
25 a596b957 2022-07-14 tracey #include <sys/resource.h>
26 a596b957 2022-07-14 tracey #include <sys/socket.h>
27 a596b957 2022-07-14 tracey #include <sys/stat.h>
28 a596b957 2022-07-14 tracey #include <sys/time.h>
29 a596b957 2022-07-14 tracey #include <sys/types.h>
30 a596b957 2022-07-14 tracey #include <sys/mman.h>
31 a596b957 2022-07-14 tracey #include <sys/un.h>
33 a596b957 2022-07-14 tracey #include <net/if.h>
34 a596b957 2022-07-14 tracey #include <netinet/in.h>
36 a596b957 2022-07-14 tracey #include <errno.h>
37 a596b957 2022-07-14 tracey #include <event.h>
38 a596b957 2022-07-14 tracey #include <fcntl.h>
39 a596b957 2022-07-14 tracey #include <ifaddrs.h>
40 a596b957 2022-07-14 tracey #include <imsg.h>
41 a596b957 2022-07-14 tracey #include <limits.h>
42 a596b957 2022-07-14 tracey #include <netdb.h>
43 a596b957 2022-07-14 tracey #include <poll.h>
44 a596b957 2022-07-14 tracey #include <pwd.h>
45 a596b957 2022-07-14 tracey #include <stddef.h>
46 a596b957 2022-07-14 tracey #include <stdio.h>
47 a596b957 2022-07-14 tracey #include <stdlib.h>
48 a596b957 2022-07-14 tracey #include <string.h>
49 a596b957 2022-07-14 tracey #include <unistd.h>
50 a596b957 2022-07-14 tracey #include <util.h>
52 a596b957 2022-07-14 tracey #include "got_error.h"
53 a596b957 2022-07-14 tracey #include "got_opentemp.h"
54 df2d3cd2 2023-03-11 op #include "got_reference.h"
55 b5c757f5 2022-09-01 stsp #include "got_repository.h"
56 6fe3b58a 2023-11-14 stsp #include "got_privsep.h"
58 a596b957 2022-07-14 tracey #include "gotwebd.h"
59 ed619ca0 2022-12-14 op #include "tmpl.h"
61 a596b957 2022-07-14 tracey #define SOCKS_BACKLOG 5
62 a596b957 2022-07-14 tracey #define MAXIMUM(a, b) (((a) > (b)) ? (a) : (b))
64 a596b957 2022-07-14 tracey volatile int client_cnt;
66 026ac2c4 2022-08-20 stsp static struct timeval timeout = { TIMEOUT_DEFAULT, 0 };
68 026ac2c4 2022-08-20 stsp static void sockets_sighdlr(int, short, void *);
69 26678add 2023-11-16 op static void sockets_shutdown(void);
70 026ac2c4 2022-08-20 stsp static void sockets_launch(void);
71 026ac2c4 2022-08-20 stsp static void sockets_purge(struct gotwebd *);
72 026ac2c4 2022-08-20 stsp static void sockets_accept_paused(int, short, void *);
73 026ac2c4 2022-08-20 stsp static void sockets_rlimit(int);
75 26678add 2023-11-16 op static void sockets_dispatch_main(int, short, void *);
76 26678add 2023-11-16 op static int sockets_unix_socket_listen(struct gotwebd *, struct socket *);
77 0c64c2f8 2023-11-15 op static int sockets_create_socket(struct address *);
78 026ac2c4 2022-08-20 stsp static int sockets_accept_reserve(int, struct sockaddr *, socklen_t *,
79 026ac2c4 2022-08-20 stsp int, volatile int *);
81 026ac2c4 2022-08-20 stsp static struct socket *sockets_conf_new_socket_unix(struct gotwebd *,
82 026ac2c4 2022-08-20 stsp struct server *, int);
83 026ac2c4 2022-08-20 stsp static struct socket *sockets_conf_new_socket_fcgi(struct gotwebd *,
84 026ac2c4 2022-08-20 stsp struct server *, int, struct address *);
86 a596b957 2022-07-14 tracey int cgi_inflight = 0;
89 26678add 2023-11-16 op sockets(struct gotwebd *env, int fd)
91 26678add 2023-11-16 op struct event sighup, sigpipe, sigusr1, sigchld;
95 a596b957 2022-07-14 tracey sockets_rlimit(-1);
97 26678add 2023-11-16 op if (config_init(env) == -1)
98 26678add 2023-11-16 op fatal("failed to initialize configuration");
100 26678add 2023-11-16 op if ((env->iev_parent = malloc(sizeof(*env->iev_parent))) == NULL)
101 26678add 2023-11-16 op fatal("malloc");
102 26678add 2023-11-16 op imsg_init(&env->iev_parent->ibuf, fd);
103 26678add 2023-11-16 op env->iev_parent->handler = sockets_dispatch_main;
104 26678add 2023-11-16 op env->iev_parent->data = env->iev_parent;
105 26678add 2023-11-16 op event_set(&env->iev_parent->ev, fd, EV_READ, sockets_dispatch_main,
106 26678add 2023-11-16 op env->iev_parent);
107 26678add 2023-11-16 op event_add(&env->iev_parent->ev, NULL);
109 8def9425 2023-11-16 op signal(SIGPIPE, SIG_IGN);
111 26678add 2023-11-16 op signal_set(&sighup, SIGCHLD, sockets_sighdlr, env);
112 26678add 2023-11-16 op signal_add(&sighup, NULL);
113 26678add 2023-11-16 op signal_set(&sigpipe, SIGCHLD, sockets_sighdlr, env);
114 26678add 2023-11-16 op signal_add(&sigpipe, NULL);
115 26678add 2023-11-16 op signal_set(&sigusr1, SIGCHLD, sockets_sighdlr, env);
116 26678add 2023-11-16 op signal_add(&sigusr1, NULL);
117 26678add 2023-11-16 op signal_set(&sigchld, SIGCHLD, sockets_sighdlr, env);
118 26678add 2023-11-16 op signal_add(&sigchld, NULL);
120 a596b957 2022-07-14 tracey #ifndef PROFILE
121 63c6b10f 2023-11-14 stsp if (pledge("stdio rpath inet recvfd proc exec sendfd unveil",
122 63c6b10f 2023-11-14 stsp NULL) == -1)
123 a596b957 2022-07-14 tracey fatal("pledge");
126 26678add 2023-11-16 op event_dispatch();
127 26678add 2023-11-16 op sockets_shutdown();
131 a596b957 2022-07-14 tracey sockets_parse_sockets(struct gotwebd *env)
133 a596b957 2022-07-14 tracey struct server *srv;
134 610dd8c9 2022-08-19 stsp struct address *a;
135 4fcc9f74 2022-08-16 stsp struct socket *new_sock = NULL;
136 610dd8c9 2022-08-19 stsp int sock_id = 1;
138 2ad48e9a 2022-08-16 stsp TAILQ_FOREACH(srv, &env->servers, entry) {
139 a596b957 2022-07-14 tracey if (srv->unix_socket) {
140 610dd8c9 2022-08-19 stsp new_sock = sockets_conf_new_socket_unix(env, srv,
142 4fcc9f74 2022-08-16 stsp if (new_sock) {
144 4fcc9f74 2022-08-16 stsp TAILQ_INSERT_TAIL(&env->sockets, new_sock,
149 610dd8c9 2022-08-19 stsp if (srv->fcgi_socket) {
150 610dd8c9 2022-08-19 stsp if (TAILQ_EMPTY(&srv->al)) {
151 610dd8c9 2022-08-19 stsp fatalx("%s: server %s has no IP addresses to "
152 610dd8c9 2022-08-19 stsp "listen for FCGI connections", __func__,
153 610dd8c9 2022-08-19 stsp srv->name);
155 610dd8c9 2022-08-19 stsp TAILQ_FOREACH(a, &srv->al, entry) {
156 610dd8c9 2022-08-19 stsp if (a->ss.ss_family != AF_INET &&
157 610dd8c9 2022-08-19 stsp a->ss.ss_family != AF_INET6)
159 610dd8c9 2022-08-19 stsp new_sock = sockets_conf_new_socket_fcgi(env,
160 610dd8c9 2022-08-19 stsp srv, sock_id, a);
161 610dd8c9 2022-08-19 stsp if (new_sock) {
163 610dd8c9 2022-08-19 stsp TAILQ_INSERT_TAIL(&env->sockets,
164 610dd8c9 2022-08-19 stsp new_sock, entry);
171 026ac2c4 2022-08-20 stsp static struct socket *
172 610dd8c9 2022-08-19 stsp sockets_conf_new_socket_unix(struct gotwebd *env, struct server *srv, int id)
174 a596b957 2022-07-14 tracey struct socket *sock;
177 a596b957 2022-07-14 tracey if ((sock = calloc(1, sizeof(*sock))) == NULL)
178 a596b957 2022-07-14 tracey fatalx("%s: calloc", __func__);
180 a596b957 2022-07-14 tracey sock->conf.id = id;
181 a596b957 2022-07-14 tracey sock->fd = -1;
182 610dd8c9 2022-08-19 stsp sock->conf.af_type = AF_UNIX;
184 610dd8c9 2022-08-19 stsp if (strlcpy(sock->conf.unix_socket_name,
185 610dd8c9 2022-08-19 stsp srv->unix_socket_name,
186 610dd8c9 2022-08-19 stsp sizeof(sock->conf.unix_socket_name)) >=
187 610dd8c9 2022-08-19 stsp sizeof(sock->conf.unix_socket_name)) {
188 610dd8c9 2022-08-19 stsp free(sock);
189 610dd8c9 2022-08-19 stsp fatalx("%s: strlcpy", __func__);
192 a596b957 2022-07-14 tracey n = snprintf(sock->conf.name, GOTWEBD_MAXTEXT, "%s_parent",
193 a596b957 2022-07-14 tracey srv->name);
194 438d0cc3 2022-08-16 op if (n < 0 || (size_t)n >= GOTWEBD_MAXTEXT) {
195 a596b957 2022-07-14 tracey free(sock);
196 a596b957 2022-07-14 tracey fatalx("%s: snprintf", __func__);
199 a596b957 2022-07-14 tracey if (strlcpy(sock->conf.srv_name, srv->name,
200 a596b957 2022-07-14 tracey sizeof(sock->conf.srv_name)) >= sizeof(sock->conf.srv_name)) {
201 a596b957 2022-07-14 tracey free(sock);
202 a596b957 2022-07-14 tracey fatalx("%s: strlcpy", __func__);
205 610dd8c9 2022-08-19 stsp return sock;
208 026ac2c4 2022-08-20 stsp static struct socket *
209 610dd8c9 2022-08-19 stsp sockets_conf_new_socket_fcgi(struct gotwebd *env, struct server *srv, int id,
210 610dd8c9 2022-08-19 stsp struct address *a)
212 610dd8c9 2022-08-19 stsp struct socket *sock;
213 610dd8c9 2022-08-19 stsp struct address *acp;
216 610dd8c9 2022-08-19 stsp if ((sock = calloc(1, sizeof(*sock))) == NULL)
217 610dd8c9 2022-08-19 stsp fatalx("%s: calloc", __func__);
219 610dd8c9 2022-08-19 stsp sock->conf.id = id;
220 610dd8c9 2022-08-19 stsp sock->fd = -1;
221 610dd8c9 2022-08-19 stsp sock->conf.af_type = a->ss.ss_family;
223 67d8de2a 2022-08-29 stsp sock->conf.fcgi_socket_port = a->port;
225 610dd8c9 2022-08-19 stsp n = snprintf(sock->conf.name, GOTWEBD_MAXTEXT, "%s_parent",
226 610dd8c9 2022-08-19 stsp srv->name);
227 610dd8c9 2022-08-19 stsp if (n < 0 || (size_t)n >= GOTWEBD_MAXTEXT) {
228 4fcc9f74 2022-08-16 stsp free(sock);
229 610dd8c9 2022-08-19 stsp fatalx("%s: snprintf", __func__);
232 610dd8c9 2022-08-19 stsp if (strlcpy(sock->conf.srv_name, srv->name,
233 610dd8c9 2022-08-19 stsp sizeof(sock->conf.srv_name)) >= sizeof(sock->conf.srv_name)) {
234 610dd8c9 2022-08-19 stsp free(sock);
235 610dd8c9 2022-08-19 stsp fatalx("%s: strlcpy", __func__);
238 610dd8c9 2022-08-19 stsp acp = &sock->conf.addr;
240 610dd8c9 2022-08-19 stsp memcpy(&acp->ss, &a->ss, sizeof(acp->ss));
241 cdfd248a 2023-11-15 op acp->slen = a->slen;
242 0c64c2f8 2023-11-15 op acp->ai_family = a->ai_family;
243 0c64c2f8 2023-11-15 op acp->ai_socktype = a->ai_socktype;
244 0c64c2f8 2023-11-15 op acp->ai_protocol = a->ai_protocol;
245 610dd8c9 2022-08-19 stsp acp->port = a->port;
246 4448825a 2023-06-16 op if (*a->ifname != '\0') {
247 610dd8c9 2022-08-19 stsp if (strlcpy(acp->ifname, a->ifname,
248 610dd8c9 2022-08-19 stsp sizeof(acp->ifname)) >= sizeof(acp->ifname)) {
249 610dd8c9 2022-08-19 stsp fatalx("%s: interface name truncated",
254 a596b957 2022-07-14 tracey return (sock);
257 026ac2c4 2022-08-20 stsp static void
258 a596b957 2022-07-14 tracey sockets_launch(void)
260 a596b957 2022-07-14 tracey struct socket *sock;
261 6fe3b58a 2023-11-14 stsp struct server *srv;
262 6fe3b58a 2023-11-14 stsp const struct got_error *error;
264 2ad48e9a 2022-08-16 stsp TAILQ_FOREACH(sock, &gotwebd_env->sockets, entry) {
265 a596b957 2022-07-14 tracey log_debug("%s: configuring socket %d (%d)", __func__,
266 a596b957 2022-07-14 tracey sock->conf.id, sock->fd);
268 a596b957 2022-07-14 tracey event_set(&sock->ev, sock->fd, EV_READ | EV_PERSIST,
269 a596b957 2022-07-14 tracey sockets_socket_accept, sock);
271 a596b957 2022-07-14 tracey if (event_add(&sock->ev, NULL))
272 a596b957 2022-07-14 tracey fatalx("event add sock");
274 a596b957 2022-07-14 tracey evtimer_set(&sock->pause, sockets_accept_paused, sock);
276 a596b957 2022-07-14 tracey log_debug("%s: running socket listener %d", __func__,
277 a596b957 2022-07-14 tracey sock->conf.id);
280 6fe3b58a 2023-11-14 stsp TAILQ_FOREACH(srv, &gotwebd_env->servers, entry) {
281 6fe3b58a 2023-11-14 stsp if (unveil(srv->repos_path, "r") == -1)
282 6fe3b58a 2023-11-14 stsp fatal("unveil %s", srv->repos_path);
285 6fe3b58a 2023-11-14 stsp error = got_privsep_unveil_exec_helpers();
287 6fe3b58a 2023-11-14 stsp fatal("%s", error->msg);
289 6fe3b58a 2023-11-14 stsp if (unveil(NULL, NULL) == -1)
290 6fe3b58a 2023-11-14 stsp fatal("unveil");
293 026ac2c4 2022-08-20 stsp static void
294 a596b957 2022-07-14 tracey sockets_purge(struct gotwebd *env)
296 a596b957 2022-07-14 tracey struct socket *sock, *tsock;
298 a596b957 2022-07-14 tracey /* shutdown and remove sockets */
299 2ad48e9a 2022-08-16 stsp TAILQ_FOREACH_SAFE(sock, &env->sockets, entry, tsock) {
300 a596b957 2022-07-14 tracey if (event_initialized(&sock->ev))
301 a596b957 2022-07-14 tracey event_del(&sock->ev);
302 a596b957 2022-07-14 tracey if (evtimer_initialized(&sock->evt))
303 a596b957 2022-07-14 tracey evtimer_del(&sock->evt);
304 a596b957 2022-07-14 tracey if (evtimer_initialized(&sock->pause))
305 a596b957 2022-07-14 tracey evtimer_del(&sock->pause);
306 a596b957 2022-07-14 tracey if (sock->fd != -1)
307 a596b957 2022-07-14 tracey close(sock->fd);
308 2ad48e9a 2022-08-16 stsp TAILQ_REMOVE(&env->sockets, sock, entry);
313 26678add 2023-11-16 op sockets_dispatch_main(int fd, short event, void *arg)
315 26678add 2023-11-16 op struct imsgev *iev = arg;
316 26678add 2023-11-16 op struct imsgbuf *ibuf;
317 26678add 2023-11-16 op struct imsg imsg;
318 26678add 2023-11-16 op struct gotwebd *env = gotwebd_env;
320 26678add 2023-11-16 op int shut = 0;
322 26678add 2023-11-16 op ibuf = &iev->ibuf;
324 26678add 2023-11-16 op if (event & EV_READ) {
325 26678add 2023-11-16 op if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
326 26678add 2023-11-16 op fatal("imsg_read error");
327 26678add 2023-11-16 op if (n == 0) /* Connection closed */
330 26678add 2023-11-16 op if (event & EV_WRITE) {
331 26678add 2023-11-16 op if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN)
332 26678add 2023-11-16 op fatal("msgbuf_write");
333 26678add 2023-11-16 op if (n == 0) /* Connection closed */
338 26678add 2023-11-16 op if ((n = imsg_get(ibuf, &imsg)) == -1)
339 26678add 2023-11-16 op fatal("imsg_get");
340 26678add 2023-11-16 op if (n == 0) /* No more messages. */
343 26678add 2023-11-16 op switch (imsg.hdr.type) {
344 26678add 2023-11-16 op case IMSG_CFG_SRV:
345 26678add 2023-11-16 op config_getserver(env, &imsg);
347 26678add 2023-11-16 op case IMSG_CFG_SOCK:
348 26678add 2023-11-16 op config_getsock(env, &imsg);
350 26678add 2023-11-16 op case IMSG_CFG_FD:
351 26678add 2023-11-16 op config_getfd(env, &imsg);
353 26678add 2023-11-16 op case IMSG_CFG_DONE:
354 26678add 2023-11-16 op config_getcfg(env, &imsg);
356 26678add 2023-11-16 op case IMSG_CTL_START:
357 26678add 2023-11-16 op sockets_launch();
360 26678add 2023-11-16 op fatalx("%s: unknown imsg type %d", __func__,
361 26678add 2023-11-16 op imsg.hdr.type);
364 26678add 2023-11-16 op imsg_free(&imsg);
368 26678add 2023-11-16 op imsg_event_add(iev);
370 26678add 2023-11-16 op /* This pipe is dead. Remove its event handler */
371 26678add 2023-11-16 op event_del(&iev->ev);
372 26678add 2023-11-16 op event_loopexit(NULL);
376 026ac2c4 2022-08-20 stsp static void
377 a596b957 2022-07-14 tracey sockets_sighdlr(int sig, short event, void *arg)
379 a596b957 2022-07-14 tracey switch (sig) {
380 a596b957 2022-07-14 tracey case SIGHUP:
381 a596b957 2022-07-14 tracey log_info("%s: ignoring SIGHUP", __func__);
383 a596b957 2022-07-14 tracey case SIGPIPE:
384 a596b957 2022-07-14 tracey log_info("%s: ignoring SIGPIPE", __func__);
386 a596b957 2022-07-14 tracey case SIGUSR1:
387 a596b957 2022-07-14 tracey log_info("%s: ignoring SIGUSR1", __func__);
389 a596b957 2022-07-14 tracey case SIGCHLD:
392 a596b957 2022-07-14 tracey log_info("SIGNAL: %d", sig);
393 a596b957 2022-07-14 tracey fatalx("unexpected signal");
398 a596b957 2022-07-14 tracey sockets_shutdown(void)
400 a596b957 2022-07-14 tracey struct server *srv, *tsrv;
401 a596b957 2022-07-14 tracey struct socket *sock, *tsock;
404 a596b957 2022-07-14 tracey sockets_purge(gotwebd_env);
406 a596b957 2022-07-14 tracey /* clean sockets */
407 2ad48e9a 2022-08-16 stsp TAILQ_FOREACH_SAFE(sock, &gotwebd_env->sockets, entry, tsock) {
408 2ad48e9a 2022-08-16 stsp TAILQ_REMOVE(&gotwebd_env->sockets, sock, entry);
409 a596b957 2022-07-14 tracey close(sock->fd);
410 a596b957 2022-07-14 tracey free(sock);
413 a596b957 2022-07-14 tracey /* clean servers */
414 b5c757f5 2022-09-01 stsp TAILQ_FOREACH_SAFE(srv, &gotwebd_env->servers, entry, tsrv) {
415 b5c757f5 2022-09-01 stsp for (i = 0; i < srv->ncached_repos; i++)
416 b5c757f5 2022-09-01 stsp got_repo_close(srv->cached_repos[i].repo);
417 a596b957 2022-07-14 tracey free(srv);
420 a596b957 2022-07-14 tracey free(gotwebd_env);
424 a596b957 2022-07-14 tracey sockets_privinit(struct gotwebd *env, struct socket *sock)
426 4fcc9f74 2022-08-16 stsp if (sock->conf.af_type == AF_UNIX) {
427 a596b957 2022-07-14 tracey log_debug("%s: initializing unix socket %s", __func__,
428 a596b957 2022-07-14 tracey sock->conf.unix_socket_name);
429 26678add 2023-11-16 op sock->fd = sockets_unix_socket_listen(env, sock);
430 a596b957 2022-07-14 tracey if (sock->fd == -1) {
431 a596b957 2022-07-14 tracey log_warnx("%s: create unix socket failed", __func__);
432 a596b957 2022-07-14 tracey return -1;
436 4fcc9f74 2022-08-16 stsp if (sock->conf.af_type == AF_INET || sock->conf.af_type == AF_INET6) {
437 4fcc9f74 2022-08-16 stsp log_debug("%s: initializing %s FCGI socket on port %d for %s",
438 4fcc9f74 2022-08-16 stsp __func__, sock->conf.af_type == AF_INET ? "inet" : "inet6",
439 4fcc9f74 2022-08-16 stsp sock->conf.fcgi_socket_port, sock->conf.name);
440 0c64c2f8 2023-11-15 op sock->fd = sockets_create_socket(&sock->conf.addr);
441 a596b957 2022-07-14 tracey if (sock->fd == -1) {
442 610dd8c9 2022-08-19 stsp log_warnx("%s: create FCGI socket failed", __func__);
443 a596b957 2022-07-14 tracey return -1;
447 a596b957 2022-07-14 tracey return 0;
451 26678add 2023-11-16 op sockets_unix_socket_listen(struct gotwebd *env, struct socket *sock)
453 a596b957 2022-07-14 tracey struct sockaddr_un sun;
454 a596b957 2022-07-14 tracey struct socket *tsock;
455 a596b957 2022-07-14 tracey int u_fd = -1;
456 a596b957 2022-07-14 tracey mode_t old_umask, mode;
458 2ad48e9a 2022-08-16 stsp TAILQ_FOREACH(tsock, &env->sockets, entry) {
459 a596b957 2022-07-14 tracey if (strcmp(tsock->conf.unix_socket_name,
460 a596b957 2022-07-14 tracey sock->conf.unix_socket_name) == 0 &&
461 a596b957 2022-07-14 tracey tsock->fd != -1)
462 a596b957 2022-07-14 tracey return (tsock->fd);
465 a596b957 2022-07-14 tracey u_fd = socket(AF_UNIX, SOCK_STREAM | SOCK_NONBLOCK| SOCK_CLOEXEC, 0);
466 a596b957 2022-07-14 tracey if (u_fd == -1) {
467 a596b957 2022-07-14 tracey log_warn("%s: socket", __func__);
468 a596b957 2022-07-14 tracey return -1;
471 a596b957 2022-07-14 tracey sun.sun_family = AF_UNIX;
472 a596b957 2022-07-14 tracey if (strlcpy(sun.sun_path, sock->conf.unix_socket_name,
473 a596b957 2022-07-14 tracey sizeof(sun.sun_path)) >= sizeof(sun.sun_path)) {
474 a596b957 2022-07-14 tracey log_warn("%s: %s name too long", __func__,
475 a596b957 2022-07-14 tracey sock->conf.unix_socket_name);
476 a596b957 2022-07-14 tracey close(u_fd);
477 a596b957 2022-07-14 tracey return -1;
480 a596b957 2022-07-14 tracey if (unlink(sock->conf.unix_socket_name) == -1) {
481 a596b957 2022-07-14 tracey if (errno != ENOENT) {
482 a596b957 2022-07-14 tracey log_warn("%s: unlink %s", __func__,
483 a596b957 2022-07-14 tracey sock->conf.unix_socket_name);
484 a596b957 2022-07-14 tracey close(u_fd);
485 a596b957 2022-07-14 tracey return -1;
489 a596b957 2022-07-14 tracey old_umask = umask(S_IXUSR|S_IXGRP|S_IWOTH|S_IROTH|S_IXOTH);
490 a596b957 2022-07-14 tracey mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP;
492 a596b957 2022-07-14 tracey if (bind(u_fd, (struct sockaddr *)&sun, sizeof(sun)) == -1) {
493 a596b957 2022-07-14 tracey log_warn("%s: bind: %s", __func__, sock->conf.unix_socket_name);
494 a596b957 2022-07-14 tracey close(u_fd);
495 a596b957 2022-07-14 tracey (void)umask(old_umask);
496 a596b957 2022-07-14 tracey return -1;
499 a596b957 2022-07-14 tracey (void)umask(old_umask);
501 a596b957 2022-07-14 tracey if (chmod(sock->conf.unix_socket_name, mode) == -1) {
502 a596b957 2022-07-14 tracey log_warn("%s: chmod", __func__);
503 a596b957 2022-07-14 tracey close(u_fd);
504 a596b957 2022-07-14 tracey (void)unlink(sock->conf.unix_socket_name);
505 a596b957 2022-07-14 tracey return -1;
508 26678add 2023-11-16 op if (chown(sock->conf.unix_socket_name, env->pw->pw_uid,
509 26678add 2023-11-16 op env->pw->pw_gid) == -1) {
510 a596b957 2022-07-14 tracey log_warn("%s: chown", __func__);
511 a596b957 2022-07-14 tracey close(u_fd);
512 a596b957 2022-07-14 tracey (void)unlink(sock->conf.unix_socket_name);
513 a596b957 2022-07-14 tracey return -1;
516 a596b957 2022-07-14 tracey if (listen(u_fd, SOCKS_BACKLOG) == -1) {
517 a596b957 2022-07-14 tracey log_warn("%s: listen", __func__);
518 a596b957 2022-07-14 tracey return -1;
521 a596b957 2022-07-14 tracey return u_fd;
525 0c64c2f8 2023-11-15 op sockets_create_socket(struct address *a)
527 a596b957 2022-07-14 tracey int fd = -1, o_val = 1, flags;
529 0c64c2f8 2023-11-15 op fd = socket(a->ai_family, a->ai_socktype, a->ai_protocol);
530 610dd8c9 2022-08-19 stsp if (fd == -1)
533 610dd8c9 2022-08-19 stsp log_debug("%s: opened socket (%d) for %s", __func__,
534 610dd8c9 2022-08-19 stsp fd, a->ifname);
536 610dd8c9 2022-08-19 stsp if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &o_val,
537 610dd8c9 2022-08-19 stsp sizeof(int)) == -1) {
538 610dd8c9 2022-08-19 stsp log_warn("%s: setsockopt error", __func__);
543 610dd8c9 2022-08-19 stsp /* non-blocking */
544 610dd8c9 2022-08-19 stsp flags = fcntl(fd, F_GETFL);
545 610dd8c9 2022-08-19 stsp flags |= O_NONBLOCK;
546 610dd8c9 2022-08-19 stsp if (fcntl(fd, F_SETFL, flags) == -1) {
547 610dd8c9 2022-08-19 stsp log_info("%s: could not enable non-blocking I/O", __func__);
552 cdfd248a 2023-11-15 op if (bind(fd, (struct sockaddr *)&a->ss, a->slen) == -1) {
554 0c64c2f8 2023-11-15 op log_info("%s: can't bind to port %d", __func__, a->port);
558 610dd8c9 2022-08-19 stsp if (listen(fd, SOMAXCONN) == -1) {
559 610dd8c9 2022-08-19 stsp log_warn("%s, unable to listen on socket", __func__);
564 a596b957 2022-07-14 tracey return (fd);
568 a596b957 2022-07-14 tracey sockets_accept_reserve(int sockfd, struct sockaddr *addr, socklen_t *addrlen,
569 a596b957 2022-07-14 tracey int reserve, volatile int *counter)
573 a596b957 2022-07-14 tracey if (getdtablecount() + reserve +
574 a596b957 2022-07-14 tracey ((*counter + 1) * FD_NEEDED) >= getdtablesize()) {
575 a596b957 2022-07-14 tracey log_debug("inflight fds exceeded");
576 a596b957 2022-07-14 tracey errno = EMFILE;
577 a596b957 2022-07-14 tracey return -1;
580 a596b957 2022-07-14 tracey if ((ret = accept4(sockfd, addr, addrlen,
581 a596b957 2022-07-14 tracey SOCK_NONBLOCK | SOCK_CLOEXEC)) > -1) {
582 a596b957 2022-07-14 tracey (*counter)++;
583 a596b957 2022-07-14 tracey log_debug("inflight incremented, now %d", *counter);
586 a596b957 2022-07-14 tracey return ret;
589 026ac2c4 2022-08-20 stsp static void
590 a596b957 2022-07-14 tracey sockets_accept_paused(int fd, short events, void *arg)
592 a596b957 2022-07-14 tracey struct socket *sock = (struct socket *)arg;
594 a596b957 2022-07-14 tracey event_add(&sock->ev, NULL);
598 a596b957 2022-07-14 tracey sockets_socket_accept(int fd, short event, void *arg)
600 a596b957 2022-07-14 tracey struct socket *sock = (struct socket *)arg;
601 a596b957 2022-07-14 tracey struct sockaddr_storage ss;
602 a596b957 2022-07-14 tracey struct timeval backoff;
603 a596b957 2022-07-14 tracey struct request *c = NULL;
604 a596b957 2022-07-14 tracey socklen_t len;
607 a596b957 2022-07-14 tracey backoff.tv_sec = 1;
608 a596b957 2022-07-14 tracey backoff.tv_usec = 0;
610 a596b957 2022-07-14 tracey event_add(&sock->ev, NULL);
611 a596b957 2022-07-14 tracey if (event & EV_TIMEOUT)
614 a596b957 2022-07-14 tracey len = sizeof(ss);
616 a596b957 2022-07-14 tracey s = sockets_accept_reserve(fd, (struct sockaddr *)&ss, &len,
617 a596b957 2022-07-14 tracey FD_RESERVE, &cgi_inflight);
619 a596b957 2022-07-14 tracey if (s == -1) {
620 a596b957 2022-07-14 tracey switch (errno) {
621 a596b957 2022-07-14 tracey case EINTR:
622 a596b957 2022-07-14 tracey case EWOULDBLOCK:
623 a596b957 2022-07-14 tracey case ECONNABORTED:
625 a596b957 2022-07-14 tracey case EMFILE:
626 a596b957 2022-07-14 tracey case ENFILE:
627 a596b957 2022-07-14 tracey event_del(&sock->ev);
628 a596b957 2022-07-14 tracey evtimer_add(&sock->pause, &backoff);
631 a596b957 2022-07-14 tracey log_warn("%s: accept", __func__);
635 a596b957 2022-07-14 tracey if (client_cnt > GOTWEBD_MAXCLIENTS)
636 a596b957 2022-07-14 tracey goto err;
638 a596b957 2022-07-14 tracey c = calloc(1, sizeof(struct request));
639 a596b957 2022-07-14 tracey if (c == NULL) {
640 ed619ca0 2022-12-14 op log_warn("%s", __func__);
642 ed619ca0 2022-12-14 op cgi_inflight--;
646 62eab86e 2023-09-13 op c->tp = template(c, &fcgi_write, c->outbuf, sizeof(c->outbuf));
647 ed619ca0 2022-12-14 op if (c->tp == NULL) {
648 a596b957 2022-07-14 tracey log_warn("%s", __func__);
649 a596b957 2022-07-14 tracey close(s);
650 a596b957 2022-07-14 tracey cgi_inflight--;
655 a596b957 2022-07-14 tracey c->fd = s;
656 a596b957 2022-07-14 tracey c->sock = sock;
657 a596b957 2022-07-14 tracey memcpy(c->priv_fd, sock->priv_fd, sizeof(c->priv_fd));
658 a596b957 2022-07-14 tracey c->buf_pos = 0;
659 a596b957 2022-07-14 tracey c->buf_len = 0;
660 a596b957 2022-07-14 tracey c->request_started = 0;
661 a596b957 2022-07-14 tracey c->sock->client_status = CLIENT_CONNECT;
663 5add7f42 2023-03-10 op event_set(&c->ev, s, EV_READ|EV_PERSIST, fcgi_request, c);
664 a596b957 2022-07-14 tracey event_add(&c->ev, NULL);
666 a596b957 2022-07-14 tracey evtimer_set(&c->tmo, fcgi_timeout, c);
667 a596b957 2022-07-14 tracey evtimer_add(&c->tmo, &timeout);
669 a596b957 2022-07-14 tracey client_cnt++;
673 a596b957 2022-07-14 tracey cgi_inflight--;
674 a596b957 2022-07-14 tracey close(s);
675 a596b957 2022-07-14 tracey if (c != NULL)
679 026ac2c4 2022-08-20 stsp static void
680 a596b957 2022-07-14 tracey sockets_rlimit(int maxfd)
682 a596b957 2022-07-14 tracey struct rlimit rl;
684 a596b957 2022-07-14 tracey if (getrlimit(RLIMIT_NOFILE, &rl) == -1)
685 a596b957 2022-07-14 tracey fatal("%s: failed to get resource limit", __func__);
686 d6267a62 2022-07-17 naddy log_debug("%s: max open files %llu", __func__,
687 d6267a62 2022-07-17 naddy (unsigned long long)rl.rlim_max);
690 a596b957 2022-07-14 tracey * Allow the maximum number of open file descriptors for this
691 a596b957 2022-07-14 tracey * login class (which should be the class "daemon" by default).
693 a596b957 2022-07-14 tracey if (maxfd == -1)
694 a596b957 2022-07-14 tracey rl.rlim_cur = rl.rlim_max;
696 a596b957 2022-07-14 tracey rl.rlim_cur = MAXIMUM(rl.rlim_max, (rlim_t)maxfd);
697 a596b957 2022-07-14 tracey if (setrlimit(RLIMIT_NOFILE, &rl) == -1)
698 a596b957 2022-07-14 tracey fatal("%s: failed to set resource limit", __func__);
