1 a596b957 2022-07-14 tracey /*
  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>
  6 a596b957 2022-07-14 tracey  *
  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.
 10 a596b957 2022-07-14 tracey  *
 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.
 18 a596b957 2022-07-14 tracey  */
 19 a596b957 2022-07-14 tracey 
 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>
 32 a596b957 2022-07-14 tracey 
 33 a596b957 2022-07-14 tracey #include <net/if.h>
 34 a596b957 2022-07-14 tracey #include <netinet/in.h>
 35 a596b957 2022-07-14 tracey 
 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>
 51 a596b957 2022-07-14 tracey 
 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"
 57 a596b957 2022-07-14 tracey 
 58 a596b957 2022-07-14 tracey #include "gotwebd.h"
 59 ed619ca0 2022-12-14 op #include "tmpl.h"
 60 a596b957 2022-07-14 tracey 
 61 a596b957 2022-07-14 tracey #define SOCKS_BACKLOG 5
 62 a596b957 2022-07-14 tracey #define MAXIMUM(a, b)	(((a) > (b)) ? (a) : (b))
 63 a596b957 2022-07-14 tracey 
 64 a596b957 2022-07-14 tracey volatile int client_cnt;
 65 a596b957 2022-07-14 tracey 
 66 026ac2c4 2022-08-20 stsp static struct timeval	timeout = { TIMEOUT_DEFAULT, 0 };
 67 a596b957 2022-07-14 tracey 
 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);
 74 a596b957 2022-07-14 tracey 
 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 *);
 80 a596b957 2022-07-14 tracey 
 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 *);
 85 a596b957 2022-07-14 tracey 
 86 a596b957 2022-07-14 tracey int cgi_inflight = 0;
 87 a596b957 2022-07-14 tracey 
 88 a596b957 2022-07-14 tracey void
 89 26678add 2023-11-16 op sockets(struct gotwebd *env, int fd)
 90 a596b957 2022-07-14 tracey {
 91 56a9d315 2023-11-18 op 	struct event	 sighup, sigusr1, sigchld;
 92 a596b957 2022-07-14 tracey 
 93 26678add 2023-11-16 op 	event_init();
 94 a596b957 2022-07-14 tracey 
 95 a596b957 2022-07-14 tracey 	sockets_rlimit(-1);
 96 a596b957 2022-07-14 tracey 
 97 26678add 2023-11-16 op 	if (config_init(env) == -1)
 98 26678add 2023-11-16 op 		fatal("failed to initialize configuration");
 99 a596b957 2022-07-14 tracey 
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);
108 8def9425 2023-11-16 op 
109 8def9425 2023-11-16 op 	signal(SIGPIPE, SIG_IGN);
110 26678add 2023-11-16 op 
111 56a9d315 2023-11-18 op 	signal_set(&sighup, SIGHUP, sockets_sighdlr, env);
112 26678add 2023-11-16 op 	signal_add(&sighup, NULL);
113 56a9d315 2023-11-18 op 	signal_set(&sigusr1, SIGUSR1, sockets_sighdlr, env);
114 26678add 2023-11-16 op 	signal_add(&sigusr1, NULL);
115 26678add 2023-11-16 op 	signal_set(&sigchld, SIGCHLD, sockets_sighdlr, env);
116 26678add 2023-11-16 op 	signal_add(&sigchld, NULL);
117 26678add 2023-11-16 op 
118 a596b957 2022-07-14 tracey #ifndef PROFILE
119 63c6b10f 2023-11-14 stsp 	if (pledge("stdio rpath inet recvfd proc exec sendfd unveil",
120 63c6b10f 2023-11-14 stsp 	    NULL) == -1)
121 a596b957 2022-07-14 tracey 		fatal("pledge");
122 a596b957 2022-07-14 tracey #endif
123 26678add 2023-11-16 op 
124 26678add 2023-11-16 op 	event_dispatch();
125 26678add 2023-11-16 op 	sockets_shutdown();
126 a596b957 2022-07-14 tracey }
127 a596b957 2022-07-14 tracey 
128 a596b957 2022-07-14 tracey void
129 a596b957 2022-07-14 tracey sockets_parse_sockets(struct gotwebd *env)
130 a596b957 2022-07-14 tracey {
131 a596b957 2022-07-14 tracey 	struct server *srv;
132 610dd8c9 2022-08-19 stsp 	struct address *a;
133 4fcc9f74 2022-08-16 stsp 	struct socket *new_sock = NULL;
134 610dd8c9 2022-08-19 stsp 	int sock_id = 1;
135 a596b957 2022-07-14 tracey 
136 2ad48e9a 2022-08-16 stsp 	TAILQ_FOREACH(srv, &env->servers, entry) {
137 a596b957 2022-07-14 tracey 		if (srv->unix_socket) {
138 610dd8c9 2022-08-19 stsp 			new_sock = sockets_conf_new_socket_unix(env, srv,
139 610dd8c9 2022-08-19 stsp 			    sock_id);
140 4fcc9f74 2022-08-16 stsp 			if (new_sock) {
141 610dd8c9 2022-08-19 stsp 				sock_id++;
142 4fcc9f74 2022-08-16 stsp 				TAILQ_INSERT_TAIL(&env->sockets, new_sock,
143 4fcc9f74 2022-08-16 stsp 				    entry);
144 a596b957 2022-07-14 tracey 			}
145 610dd8c9 2022-08-19 stsp 		}
146 a596b957 2022-07-14 tracey 
147 610dd8c9 2022-08-19 stsp 		if (srv->fcgi_socket) {
148 610dd8c9 2022-08-19 stsp 			if (TAILQ_EMPTY(&srv->al)) {
149 610dd8c9 2022-08-19 stsp 				fatalx("%s: server %s has no IP addresses to "
150 610dd8c9 2022-08-19 stsp 				    "listen for FCGI connections", __func__,
151 610dd8c9 2022-08-19 stsp 				    srv->name);
152 4fcc9f74 2022-08-16 stsp 			}
153 610dd8c9 2022-08-19 stsp 			TAILQ_FOREACH(a, &srv->al, entry) {
154 610dd8c9 2022-08-19 stsp 				if (a->ss.ss_family != AF_INET &&
155 610dd8c9 2022-08-19 stsp 				    a->ss.ss_family != AF_INET6)
156 610dd8c9 2022-08-19 stsp 					continue;
157 610dd8c9 2022-08-19 stsp 				new_sock = sockets_conf_new_socket_fcgi(env,
158 610dd8c9 2022-08-19 stsp 				    srv, sock_id, a);
159 610dd8c9 2022-08-19 stsp 				if (new_sock) {
160 610dd8c9 2022-08-19 stsp 					sock_id++;
161 610dd8c9 2022-08-19 stsp 					TAILQ_INSERT_TAIL(&env->sockets,
162 610dd8c9 2022-08-19 stsp 					    new_sock, entry);
163 610dd8c9 2022-08-19 stsp 				}
164 a596b957 2022-07-14 tracey 			}
165 a596b957 2022-07-14 tracey 		}
166 a596b957 2022-07-14 tracey 	}
167 a596b957 2022-07-14 tracey }
168 a596b957 2022-07-14 tracey 
169 026ac2c4 2022-08-20 stsp static struct socket *
170 610dd8c9 2022-08-19 stsp sockets_conf_new_socket_unix(struct gotwebd *env, struct server *srv, int id)
171 a596b957 2022-07-14 tracey {
172 a596b957 2022-07-14 tracey 	struct socket *sock;
173 a596b957 2022-07-14 tracey 	int n;
174 a596b957 2022-07-14 tracey 
175 a596b957 2022-07-14 tracey 	if ((sock = calloc(1, sizeof(*sock))) == NULL)
176 a596b957 2022-07-14 tracey 		fatalx("%s: calloc", __func__);
177 a596b957 2022-07-14 tracey 
178 a596b957 2022-07-14 tracey 	sock->conf.id = id;
179 a596b957 2022-07-14 tracey 	sock->fd = -1;
180 610dd8c9 2022-08-19 stsp 	sock->conf.af_type = AF_UNIX;
181 a596b957 2022-07-14 tracey 
182 610dd8c9 2022-08-19 stsp 	if (strlcpy(sock->conf.unix_socket_name,
183 610dd8c9 2022-08-19 stsp 	    srv->unix_socket_name,
184 610dd8c9 2022-08-19 stsp 	    sizeof(sock->conf.unix_socket_name)) >=
185 610dd8c9 2022-08-19 stsp 	    sizeof(sock->conf.unix_socket_name)) {
186 610dd8c9 2022-08-19 stsp 		free(sock);
187 610dd8c9 2022-08-19 stsp 		fatalx("%s: strlcpy", __func__);
188 4fcc9f74 2022-08-16 stsp 	}
189 a596b957 2022-07-14 tracey 
190 a596b957 2022-07-14 tracey 	n = snprintf(sock->conf.name, GOTWEBD_MAXTEXT, "%s_parent",
191 a596b957 2022-07-14 tracey 	    srv->name);
192 438d0cc3 2022-08-16 op 	if (n < 0 || (size_t)n >= GOTWEBD_MAXTEXT) {
193 a596b957 2022-07-14 tracey 		free(sock);
194 a596b957 2022-07-14 tracey 		fatalx("%s: snprintf", __func__);
195 a596b957 2022-07-14 tracey 	}
196 a596b957 2022-07-14 tracey 
197 a596b957 2022-07-14 tracey 	if (strlcpy(sock->conf.srv_name, srv->name,
198 a596b957 2022-07-14 tracey 	    sizeof(sock->conf.srv_name)) >= sizeof(sock->conf.srv_name)) {
199 a596b957 2022-07-14 tracey 		free(sock);
200 a596b957 2022-07-14 tracey 		fatalx("%s: strlcpy", __func__);
201 a596b957 2022-07-14 tracey 	}
202 a596b957 2022-07-14 tracey 
203 610dd8c9 2022-08-19 stsp 	return sock;
204 610dd8c9 2022-08-19 stsp }
205 4fcc9f74 2022-08-16 stsp 
206 026ac2c4 2022-08-20 stsp static struct socket *
207 610dd8c9 2022-08-19 stsp sockets_conf_new_socket_fcgi(struct gotwebd *env, struct server *srv, int id,
208 610dd8c9 2022-08-19 stsp     struct address *a)
209 610dd8c9 2022-08-19 stsp {
210 610dd8c9 2022-08-19 stsp 	struct socket *sock;
211 610dd8c9 2022-08-19 stsp 	struct address *acp;
212 610dd8c9 2022-08-19 stsp 	int n;
213 a596b957 2022-07-14 tracey 
214 610dd8c9 2022-08-19 stsp 	if ((sock = calloc(1, sizeof(*sock))) == NULL)
215 610dd8c9 2022-08-19 stsp 		fatalx("%s: calloc", __func__);
216 4fcc9f74 2022-08-16 stsp 
217 610dd8c9 2022-08-19 stsp 	sock->conf.id = id;
218 610dd8c9 2022-08-19 stsp 	sock->fd = -1;
219 610dd8c9 2022-08-19 stsp 	sock->conf.af_type = a->ss.ss_family;
220 610dd8c9 2022-08-19 stsp 
221 67d8de2a 2022-08-29 stsp 	sock->conf.fcgi_socket_port = a->port;
222 610dd8c9 2022-08-19 stsp 
223 610dd8c9 2022-08-19 stsp 	n = snprintf(sock->conf.name, GOTWEBD_MAXTEXT, "%s_parent",
224 610dd8c9 2022-08-19 stsp 	    srv->name);
225 610dd8c9 2022-08-19 stsp 	if (n < 0 || (size_t)n >= GOTWEBD_MAXTEXT) {
226 4fcc9f74 2022-08-16 stsp 		free(sock);
227 610dd8c9 2022-08-19 stsp 		fatalx("%s: snprintf", __func__);
228 4fcc9f74 2022-08-16 stsp 	}
229 4fcc9f74 2022-08-16 stsp 
230 610dd8c9 2022-08-19 stsp 	if (strlcpy(sock->conf.srv_name, srv->name,
231 610dd8c9 2022-08-19 stsp 	    sizeof(sock->conf.srv_name)) >= sizeof(sock->conf.srv_name)) {
232 610dd8c9 2022-08-19 stsp 		free(sock);
233 610dd8c9 2022-08-19 stsp 		fatalx("%s: strlcpy", __func__);
234 610dd8c9 2022-08-19 stsp 	}
235 610dd8c9 2022-08-19 stsp 
236 610dd8c9 2022-08-19 stsp 	acp = &sock->conf.addr;
237 610dd8c9 2022-08-19 stsp 
238 610dd8c9 2022-08-19 stsp 	memcpy(&acp->ss, &a->ss, sizeof(acp->ss));
239 cdfd248a 2023-11-15 op 	acp->slen = a->slen;
240 0c64c2f8 2023-11-15 op 	acp->ai_family = a->ai_family;
241 0c64c2f8 2023-11-15 op 	acp->ai_socktype = a->ai_socktype;
242 0c64c2f8 2023-11-15 op 	acp->ai_protocol = a->ai_protocol;
243 610dd8c9 2022-08-19 stsp 	acp->port = a->port;
244 4448825a 2023-06-16 op 	if (*a->ifname != '\0') {
245 610dd8c9 2022-08-19 stsp 		if (strlcpy(acp->ifname, a->ifname,
246 610dd8c9 2022-08-19 stsp 		    sizeof(acp->ifname)) >= sizeof(acp->ifname)) {
247 610dd8c9 2022-08-19 stsp 			fatalx("%s: interface name truncated",
248 610dd8c9 2022-08-19 stsp 			    __func__);
249 610dd8c9 2022-08-19 stsp 		}
250 610dd8c9 2022-08-19 stsp 	}
251 610dd8c9 2022-08-19 stsp 
252 a596b957 2022-07-14 tracey 	return (sock);
253 a596b957 2022-07-14 tracey }
254 a596b957 2022-07-14 tracey 
255 026ac2c4 2022-08-20 stsp static void
256 a596b957 2022-07-14 tracey sockets_launch(void)
257 a596b957 2022-07-14 tracey {
258 a596b957 2022-07-14 tracey 	struct socket *sock;
259 6fe3b58a 2023-11-14 stsp 	struct server *srv;
260 6fe3b58a 2023-11-14 stsp 	const struct got_error *error;
261 a596b957 2022-07-14 tracey 
262 2ad48e9a 2022-08-16 stsp 	TAILQ_FOREACH(sock, &gotwebd_env->sockets, entry) {
263 a596b957 2022-07-14 tracey 		log_debug("%s: configuring socket %d (%d)", __func__,
264 a596b957 2022-07-14 tracey 		    sock->conf.id, sock->fd);
265 a596b957 2022-07-14 tracey 
266 a596b957 2022-07-14 tracey 		event_set(&sock->ev, sock->fd, EV_READ | EV_PERSIST,
267 a596b957 2022-07-14 tracey 		    sockets_socket_accept, sock);
268 a596b957 2022-07-14 tracey 
269 a596b957 2022-07-14 tracey 		if (event_add(&sock->ev, NULL))
270 a596b957 2022-07-14 tracey 			fatalx("event add sock");
271 a596b957 2022-07-14 tracey 
272 a596b957 2022-07-14 tracey 		evtimer_set(&sock->pause, sockets_accept_paused, sock);
273 a596b957 2022-07-14 tracey 
274 a596b957 2022-07-14 tracey 		log_debug("%s: running socket listener %d", __func__,
275 a596b957 2022-07-14 tracey 		    sock->conf.id);
276 a596b957 2022-07-14 tracey 	}
277 6fe3b58a 2023-11-14 stsp 
278 6fe3b58a 2023-11-14 stsp 	TAILQ_FOREACH(srv, &gotwebd_env->servers, entry) {
279 6fe3b58a 2023-11-14 stsp 		if (unveil(srv->repos_path, "r") == -1)
280 6fe3b58a 2023-11-14 stsp 			fatal("unveil %s", srv->repos_path);
281 6fe3b58a 2023-11-14 stsp 	}
282 6fe3b58a 2023-11-14 stsp 
283 6fe3b58a 2023-11-14 stsp 	error = got_privsep_unveil_exec_helpers();
284 6fe3b58a 2023-11-14 stsp 	if (error)
285 6fe3b58a 2023-11-14 stsp 		fatal("%s", error->msg);
286 6fe3b58a 2023-11-14 stsp 
287 6fe3b58a 2023-11-14 stsp 	if (unveil(NULL, NULL) == -1)
288 6fe3b58a 2023-11-14 stsp 		fatal("unveil");
289 a596b957 2022-07-14 tracey }
290 a596b957 2022-07-14 tracey 
291 026ac2c4 2022-08-20 stsp static void
292 a596b957 2022-07-14 tracey sockets_purge(struct gotwebd *env)
293 a596b957 2022-07-14 tracey {
294 a596b957 2022-07-14 tracey 	struct socket *sock, *tsock;
295 a596b957 2022-07-14 tracey 
296 a596b957 2022-07-14 tracey 	/* shutdown and remove sockets */
297 2ad48e9a 2022-08-16 stsp 	TAILQ_FOREACH_SAFE(sock, &env->sockets, entry, tsock) {
298 a596b957 2022-07-14 tracey 		if (event_initialized(&sock->ev))
299 a596b957 2022-07-14 tracey 			event_del(&sock->ev);
300 a596b957 2022-07-14 tracey 		if (evtimer_initialized(&sock->evt))
301 a596b957 2022-07-14 tracey 			evtimer_del(&sock->evt);
302 a596b957 2022-07-14 tracey 		if (evtimer_initialized(&sock->pause))
303 a596b957 2022-07-14 tracey 			evtimer_del(&sock->pause);
304 a596b957 2022-07-14 tracey 		if (sock->fd != -1)
305 a596b957 2022-07-14 tracey 			close(sock->fd);
306 2ad48e9a 2022-08-16 stsp 		TAILQ_REMOVE(&env->sockets, sock, entry);
307 a596b957 2022-07-14 tracey 	}
308 a596b957 2022-07-14 tracey }
309 a596b957 2022-07-14 tracey 
310 26678add 2023-11-16 op static void
311 26678add 2023-11-16 op sockets_dispatch_main(int fd, short event, void *arg)
312 a596b957 2022-07-14 tracey {
313 26678add 2023-11-16 op 	struct imsgev		*iev = arg;
314 26678add 2023-11-16 op 	struct imsgbuf		*ibuf;
315 26678add 2023-11-16 op 	struct imsg		 imsg;
316 26678add 2023-11-16 op 	struct gotwebd		*env = gotwebd_env;
317 26678add 2023-11-16 op 	ssize_t			 n;
318 26678add 2023-11-16 op 	int			 shut = 0;
319 a596b957 2022-07-14 tracey 
320 26678add 2023-11-16 op 	ibuf = &iev->ibuf;
321 26678add 2023-11-16 op 
322 26678add 2023-11-16 op 	if (event & EV_READ) {
323 26678add 2023-11-16 op 		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)
324 26678add 2023-11-16 op 			fatal("imsg_read error");
325 26678add 2023-11-16 op 		if (n == 0)	/* Connection closed */
326 26678add 2023-11-16 op 			shut = 1;
327 a596b957 2022-07-14 tracey 	}
328 26678add 2023-11-16 op 	if (event & EV_WRITE) {
329 26678add 2023-11-16 op 		if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN)
330 26678add 2023-11-16 op 			fatal("msgbuf_write");
331 26678add 2023-11-16 op 		if (n == 0)	/* Connection closed */
332 26678add 2023-11-16 op 			shut = 1;
333 26678add 2023-11-16 op 	}
334 a596b957 2022-07-14 tracey 
335 26678add 2023-11-16 op 	for (;;) {
336 26678add 2023-11-16 op 		if ((n = imsg_get(ibuf, &imsg)) == -1)
337 26678add 2023-11-16 op 			fatal("imsg_get");
338 26678add 2023-11-16 op 		if (n == 0)	/* No more messages. */
339 26678add 2023-11-16 op 			break;
340 26678add 2023-11-16 op 
341 26678add 2023-11-16 op 		switch (imsg.hdr.type) {
342 26678add 2023-11-16 op 		case IMSG_CFG_SRV:
343 26678add 2023-11-16 op 			config_getserver(env, &imsg);
344 26678add 2023-11-16 op 			break;
345 26678add 2023-11-16 op 		case IMSG_CFG_SOCK:
346 26678add 2023-11-16 op 			config_getsock(env, &imsg);
347 26678add 2023-11-16 op 			break;
348 26678add 2023-11-16 op 		case IMSG_CFG_FD:
349 26678add 2023-11-16 op 			config_getfd(env, &imsg);
350 26678add 2023-11-16 op 			break;
351 26678add 2023-11-16 op 		case IMSG_CFG_DONE:
352 26678add 2023-11-16 op 			config_getcfg(env, &imsg);
353 26678add 2023-11-16 op 			break;
354 26678add 2023-11-16 op 		case IMSG_CTL_START:
355 26678add 2023-11-16 op 			sockets_launch();
356 26678add 2023-11-16 op 			break;
357 26678add 2023-11-16 op 		default:
358 26678add 2023-11-16 op 			fatalx("%s: unknown imsg type %d", __func__,
359 26678add 2023-11-16 op 			    imsg.hdr.type);
360 26678add 2023-11-16 op 		}
361 26678add 2023-11-16 op 
362 26678add 2023-11-16 op 		imsg_free(&imsg);
363 a596b957 2022-07-14 tracey 	}
364 a596b957 2022-07-14 tracey 
365 26678add 2023-11-16 op 	if (!shut)
366 26678add 2023-11-16 op 		imsg_event_add(iev);
367 26678add 2023-11-16 op 	else {
368 26678add 2023-11-16 op 		/* This pipe is dead.  Remove its event handler */
369 26678add 2023-11-16 op 		event_del(&iev->ev);
370 26678add 2023-11-16 op 		event_loopexit(NULL);
371 26678add 2023-11-16 op 	}
372 a596b957 2022-07-14 tracey }
373 a596b957 2022-07-14 tracey 
374 026ac2c4 2022-08-20 stsp static void
375 a596b957 2022-07-14 tracey sockets_sighdlr(int sig, short event, void *arg)
376 a596b957 2022-07-14 tracey {
377 a596b957 2022-07-14 tracey 	switch (sig) {
378 a596b957 2022-07-14 tracey 	case SIGHUP:
379 a596b957 2022-07-14 tracey 		log_info("%s: ignoring SIGHUP", __func__);
380 a596b957 2022-07-14 tracey 		break;
381 a596b957 2022-07-14 tracey 	case SIGPIPE:
382 a596b957 2022-07-14 tracey 		log_info("%s: ignoring SIGPIPE", __func__);
383 a596b957 2022-07-14 tracey 		break;
384 a596b957 2022-07-14 tracey 	case SIGUSR1:
385 a596b957 2022-07-14 tracey 		log_info("%s: ignoring SIGUSR1", __func__);
386 a596b957 2022-07-14 tracey 		break;
387 a596b957 2022-07-14 tracey 	case SIGCHLD:
388 a596b957 2022-07-14 tracey 		break;
389 a596b957 2022-07-14 tracey 	default:
390 a596b957 2022-07-14 tracey 		log_info("SIGNAL: %d", sig);
391 a596b957 2022-07-14 tracey 		fatalx("unexpected signal");
392 a596b957 2022-07-14 tracey 	}
393 a596b957 2022-07-14 tracey }
394 a596b957 2022-07-14 tracey 
395 26678add 2023-11-16 op static void
396 a596b957 2022-07-14 tracey sockets_shutdown(void)
397 a596b957 2022-07-14 tracey {
398 a596b957 2022-07-14 tracey 	struct server *srv, *tsrv;
399 a596b957 2022-07-14 tracey 	struct socket *sock, *tsock;
400 a596b957 2022-07-14 tracey 
401 a596b957 2022-07-14 tracey 	sockets_purge(gotwebd_env);
402 a596b957 2022-07-14 tracey 
403 a596b957 2022-07-14 tracey 	/* clean sockets */
404 2ad48e9a 2022-08-16 stsp 	TAILQ_FOREACH_SAFE(sock, &gotwebd_env->sockets, entry, tsock) {
405 2ad48e9a 2022-08-16 stsp 		TAILQ_REMOVE(&gotwebd_env->sockets, sock, entry);
406 a596b957 2022-07-14 tracey 		close(sock->fd);
407 a596b957 2022-07-14 tracey 		free(sock);
408 a596b957 2022-07-14 tracey 	}
409 a596b957 2022-07-14 tracey 
410 a596b957 2022-07-14 tracey 	/* clean servers */
411 1632f50a 2023-11-17 stsp 	TAILQ_FOREACH_SAFE(srv, &gotwebd_env->servers, entry, tsrv)
412 a596b957 2022-07-14 tracey 		free(srv);
413 a596b957 2022-07-14 tracey 
414 a596b957 2022-07-14 tracey 	free(gotwebd_env);
415 a596b957 2022-07-14 tracey }
416 a596b957 2022-07-14 tracey 
417 a596b957 2022-07-14 tracey int
418 a596b957 2022-07-14 tracey sockets_privinit(struct gotwebd *env, struct socket *sock)
419 a596b957 2022-07-14 tracey {
420 4fcc9f74 2022-08-16 stsp 	if (sock->conf.af_type == AF_UNIX) {
421 a596b957 2022-07-14 tracey 		log_debug("%s: initializing unix socket %s", __func__,
422 a596b957 2022-07-14 tracey 		    sock->conf.unix_socket_name);
423 26678add 2023-11-16 op 		sock->fd = sockets_unix_socket_listen(env, sock);
424 a596b957 2022-07-14 tracey 		if (sock->fd == -1) {
425 a596b957 2022-07-14 tracey 			log_warnx("%s: create unix socket failed", __func__);
426 a596b957 2022-07-14 tracey 			return -1;
427 a596b957 2022-07-14 tracey 		}
428 a596b957 2022-07-14 tracey 	}
429 a596b957 2022-07-14 tracey 
430 4fcc9f74 2022-08-16 stsp 	if (sock->conf.af_type == AF_INET || sock->conf.af_type == AF_INET6) {
431 4fcc9f74 2022-08-16 stsp 		log_debug("%s: initializing %s FCGI socket on port %d for %s",
432 4fcc9f74 2022-08-16 stsp 		    __func__, sock->conf.af_type == AF_INET ? "inet" : "inet6",
433 4fcc9f74 2022-08-16 stsp 		    sock->conf.fcgi_socket_port, sock->conf.name);
434 0c64c2f8 2023-11-15 op 		sock->fd = sockets_create_socket(&sock->conf.addr);
435 a596b957 2022-07-14 tracey 		if (sock->fd == -1) {
436 610dd8c9 2022-08-19 stsp 			log_warnx("%s: create FCGI socket failed", __func__);
437 a596b957 2022-07-14 tracey 			return -1;
438 a596b957 2022-07-14 tracey 		}
439 a596b957 2022-07-14 tracey 	}
440 a596b957 2022-07-14 tracey 
441 a596b957 2022-07-14 tracey 	return 0;
442 a596b957 2022-07-14 tracey }
443 a596b957 2022-07-14 tracey 
444 026ac2c4 2022-08-20 stsp static int
445 26678add 2023-11-16 op sockets_unix_socket_listen(struct gotwebd *env, struct socket *sock)
446 a596b957 2022-07-14 tracey {
447 a596b957 2022-07-14 tracey 	struct sockaddr_un sun;
448 a596b957 2022-07-14 tracey 	struct socket *tsock;
449 a596b957 2022-07-14 tracey 	int u_fd = -1;
450 a596b957 2022-07-14 tracey 	mode_t old_umask, mode;
451 a596b957 2022-07-14 tracey 
452 2ad48e9a 2022-08-16 stsp 	TAILQ_FOREACH(tsock, &env->sockets, entry) {
453 a596b957 2022-07-14 tracey 		if (strcmp(tsock->conf.unix_socket_name,
454 a596b957 2022-07-14 tracey 		    sock->conf.unix_socket_name) == 0 &&
455 a596b957 2022-07-14 tracey 		    tsock->fd != -1)
456 a596b957 2022-07-14 tracey 			return (tsock->fd);
457 a596b957 2022-07-14 tracey 	}
458 a596b957 2022-07-14 tracey 
459 a596b957 2022-07-14 tracey 	u_fd = socket(AF_UNIX, SOCK_STREAM | SOCK_NONBLOCK| SOCK_CLOEXEC, 0);
460 a596b957 2022-07-14 tracey 	if (u_fd == -1) {
461 a596b957 2022-07-14 tracey 		log_warn("%s: socket", __func__);
462 a596b957 2022-07-14 tracey 		return -1;
463 a596b957 2022-07-14 tracey 	}
464 a596b957 2022-07-14 tracey 
465 a596b957 2022-07-14 tracey 	sun.sun_family = AF_UNIX;
466 a596b957 2022-07-14 tracey 	if (strlcpy(sun.sun_path, sock->conf.unix_socket_name,
467 a596b957 2022-07-14 tracey 	    sizeof(sun.sun_path)) >= sizeof(sun.sun_path)) {
468 a596b957 2022-07-14 tracey 		log_warn("%s: %s name too long", __func__,
469 a596b957 2022-07-14 tracey 		    sock->conf.unix_socket_name);
470 a596b957 2022-07-14 tracey 		close(u_fd);
471 a596b957 2022-07-14 tracey 		return -1;
472 a596b957 2022-07-14 tracey 	}
473 a596b957 2022-07-14 tracey 
474 a596b957 2022-07-14 tracey 	if (unlink(sock->conf.unix_socket_name) == -1) {
475 a596b957 2022-07-14 tracey 		if (errno != ENOENT) {
476 a596b957 2022-07-14 tracey 			log_warn("%s: unlink %s", __func__,
477 a596b957 2022-07-14 tracey 			    sock->conf.unix_socket_name);
478 a596b957 2022-07-14 tracey 			close(u_fd);
479 a596b957 2022-07-14 tracey 			return -1;
480 a596b957 2022-07-14 tracey 		}
481 a596b957 2022-07-14 tracey 	}
482 a596b957 2022-07-14 tracey 
483 a596b957 2022-07-14 tracey 	old_umask = umask(S_IXUSR|S_IXGRP|S_IWOTH|S_IROTH|S_IXOTH);
484 a596b957 2022-07-14 tracey 	mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP;
485 a596b957 2022-07-14 tracey 
486 a596b957 2022-07-14 tracey 	if (bind(u_fd, (struct sockaddr *)&sun, sizeof(sun)) == -1) {
487 a596b957 2022-07-14 tracey 		log_warn("%s: bind: %s", __func__, sock->conf.unix_socket_name);
488 a596b957 2022-07-14 tracey 		close(u_fd);
489 a596b957 2022-07-14 tracey 		(void)umask(old_umask);
490 a596b957 2022-07-14 tracey 		return -1;
491 a596b957 2022-07-14 tracey 	}
492 a596b957 2022-07-14 tracey 
493 a596b957 2022-07-14 tracey 	(void)umask(old_umask);
494 a596b957 2022-07-14 tracey 
495 a596b957 2022-07-14 tracey 	if (chmod(sock->conf.unix_socket_name, mode) == -1) {
496 a596b957 2022-07-14 tracey 		log_warn("%s: chmod", __func__);
497 a596b957 2022-07-14 tracey 		close(u_fd);
498 a596b957 2022-07-14 tracey 		(void)unlink(sock->conf.unix_socket_name);
499 a596b957 2022-07-14 tracey 		return -1;
500 a596b957 2022-07-14 tracey 	}
501 a596b957 2022-07-14 tracey 
502 26678add 2023-11-16 op 	if (chown(sock->conf.unix_socket_name, env->pw->pw_uid,
503 26678add 2023-11-16 op 	    env->pw->pw_gid) == -1) {
504 a596b957 2022-07-14 tracey 		log_warn("%s: chown", __func__);
505 a596b957 2022-07-14 tracey 		close(u_fd);
506 a596b957 2022-07-14 tracey 		(void)unlink(sock->conf.unix_socket_name);
507 a596b957 2022-07-14 tracey 		return -1;
508 a596b957 2022-07-14 tracey 	}
509 a596b957 2022-07-14 tracey 
510 a596b957 2022-07-14 tracey 	if (listen(u_fd, SOCKS_BACKLOG) == -1) {
511 a596b957 2022-07-14 tracey 		log_warn("%s: listen", __func__);
512 a596b957 2022-07-14 tracey 		return -1;
513 a596b957 2022-07-14 tracey 	}
514 a596b957 2022-07-14 tracey 
515 a596b957 2022-07-14 tracey 	return u_fd;
516 a596b957 2022-07-14 tracey }
517 a596b957 2022-07-14 tracey 
518 026ac2c4 2022-08-20 stsp static int
519 0c64c2f8 2023-11-15 op sockets_create_socket(struct address *a)
520 a596b957 2022-07-14 tracey {
521 a596b957 2022-07-14 tracey 	int fd = -1, o_val = 1, flags;
522 a596b957 2022-07-14 tracey 
523 0c64c2f8 2023-11-15 op 	fd = socket(a->ai_family, a->ai_socktype, a->ai_protocol);
524 610dd8c9 2022-08-19 stsp 	if (fd == -1)
525 610dd8c9 2022-08-19 stsp 		return -1;
526 a596b957 2022-07-14 tracey 
527 610dd8c9 2022-08-19 stsp 	log_debug("%s: opened socket (%d) for %s", __func__,
528 610dd8c9 2022-08-19 stsp 	    fd, a->ifname);
529 a596b957 2022-07-14 tracey 
530 610dd8c9 2022-08-19 stsp 	if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &o_val,
531 610dd8c9 2022-08-19 stsp 	    sizeof(int)) == -1) {
532 610dd8c9 2022-08-19 stsp 		log_warn("%s: setsockopt error", __func__);
533 610dd8c9 2022-08-19 stsp 		close(fd);
534 610dd8c9 2022-08-19 stsp 		return -1;
535 610dd8c9 2022-08-19 stsp 	}
536 a596b957 2022-07-14 tracey 
537 610dd8c9 2022-08-19 stsp 	/* non-blocking */
538 610dd8c9 2022-08-19 stsp 	flags = fcntl(fd, F_GETFL);
539 610dd8c9 2022-08-19 stsp 	flags |= O_NONBLOCK;
540 610dd8c9 2022-08-19 stsp 	if (fcntl(fd, F_SETFL, flags) == -1) {
541 610dd8c9 2022-08-19 stsp 		log_info("%s: could not enable non-blocking I/O", __func__);
542 610dd8c9 2022-08-19 stsp 		close(fd);
543 610dd8c9 2022-08-19 stsp 		return -1;
544 610dd8c9 2022-08-19 stsp 	}
545 a596b957 2022-07-14 tracey 
546 cdfd248a 2023-11-15 op 	if (bind(fd, (struct sockaddr *)&a->ss, a->slen) == -1) {
547 610dd8c9 2022-08-19 stsp 		close(fd);
548 0c64c2f8 2023-11-15 op 		log_info("%s: can't bind to port %d", __func__, a->port);
549 610dd8c9 2022-08-19 stsp 		return -1;
550 a596b957 2022-07-14 tracey 	}
551 a596b957 2022-07-14 tracey 
552 610dd8c9 2022-08-19 stsp 	if (listen(fd, SOMAXCONN) == -1) {
553 610dd8c9 2022-08-19 stsp 		log_warn("%s, unable to listen on socket", __func__);
554 610dd8c9 2022-08-19 stsp 		close(fd);
555 610dd8c9 2022-08-19 stsp 		return -1;
556 610dd8c9 2022-08-19 stsp 	}
557 610dd8c9 2022-08-19 stsp 
558 a596b957 2022-07-14 tracey 	return (fd);
559 a596b957 2022-07-14 tracey }
560 a596b957 2022-07-14 tracey 
561 026ac2c4 2022-08-20 stsp static int
562 a596b957 2022-07-14 tracey sockets_accept_reserve(int sockfd, struct sockaddr *addr, socklen_t *addrlen,
563 a596b957 2022-07-14 tracey     int reserve, volatile int *counter)
564 a596b957 2022-07-14 tracey {
565 a596b957 2022-07-14 tracey 	int ret;
566 a596b957 2022-07-14 tracey 
567 a596b957 2022-07-14 tracey 	if (getdtablecount() + reserve +
568 a596b957 2022-07-14 tracey 	    ((*counter + 1) * FD_NEEDED) >= getdtablesize()) {
569 a596b957 2022-07-14 tracey 		log_debug("inflight fds exceeded");
570 a596b957 2022-07-14 tracey 		errno = EMFILE;
571 a596b957 2022-07-14 tracey 		return -1;
572 a596b957 2022-07-14 tracey 	}
573 a596b957 2022-07-14 tracey 
574 a596b957 2022-07-14 tracey 	if ((ret = accept4(sockfd, addr, addrlen,
575 a596b957 2022-07-14 tracey 	    SOCK_NONBLOCK | SOCK_CLOEXEC)) > -1) {
576 a596b957 2022-07-14 tracey 		(*counter)++;
577 a596b957 2022-07-14 tracey 		log_debug("inflight incremented, now %d", *counter);
578 a596b957 2022-07-14 tracey 	}
579 a596b957 2022-07-14 tracey 
580 a596b957 2022-07-14 tracey 	return ret;
581 a596b957 2022-07-14 tracey }
582 a596b957 2022-07-14 tracey 
583 026ac2c4 2022-08-20 stsp static void
584 a596b957 2022-07-14 tracey sockets_accept_paused(int fd, short events, void *arg)
585 a596b957 2022-07-14 tracey {
586 a596b957 2022-07-14 tracey 	struct socket *sock = (struct socket *)arg;
587 a596b957 2022-07-14 tracey 
588 a596b957 2022-07-14 tracey 	event_add(&sock->ev, NULL);
589 a596b957 2022-07-14 tracey }
590 a596b957 2022-07-14 tracey 
591 a596b957 2022-07-14 tracey void
592 a596b957 2022-07-14 tracey sockets_socket_accept(int fd, short event, void *arg)
593 a596b957 2022-07-14 tracey {
594 a596b957 2022-07-14 tracey 	struct socket *sock = (struct socket *)arg;
595 a596b957 2022-07-14 tracey 	struct sockaddr_storage ss;
596 a596b957 2022-07-14 tracey 	struct timeval backoff;
597 a596b957 2022-07-14 tracey 	struct request *c = NULL;
598 a596b957 2022-07-14 tracey 	socklen_t len;
599 a596b957 2022-07-14 tracey 	int s;
600 a596b957 2022-07-14 tracey 
601 a596b957 2022-07-14 tracey 	backoff.tv_sec = 1;
602 a596b957 2022-07-14 tracey 	backoff.tv_usec = 0;
603 a596b957 2022-07-14 tracey 
604 a596b957 2022-07-14 tracey 	event_add(&sock->ev, NULL);
605 a596b957 2022-07-14 tracey 	if (event & EV_TIMEOUT)
606 a596b957 2022-07-14 tracey 		return;
607 a596b957 2022-07-14 tracey 
608 a596b957 2022-07-14 tracey 	len = sizeof(ss);
609 a596b957 2022-07-14 tracey 
610 a596b957 2022-07-14 tracey 	s = sockets_accept_reserve(fd, (struct sockaddr *)&ss, &len,
611 a596b957 2022-07-14 tracey 	    FD_RESERVE, &cgi_inflight);
612 a596b957 2022-07-14 tracey 
613 a596b957 2022-07-14 tracey 	if (s == -1) {
614 a596b957 2022-07-14 tracey 		switch (errno) {
615 a596b957 2022-07-14 tracey 		case EINTR:
616 a596b957 2022-07-14 tracey 		case EWOULDBLOCK:
617 a596b957 2022-07-14 tracey 		case ECONNABORTED:
618 a596b957 2022-07-14 tracey 			return;
619 a596b957 2022-07-14 tracey 		case EMFILE:
620 a596b957 2022-07-14 tracey 		case ENFILE:
621 a596b957 2022-07-14 tracey 			event_del(&sock->ev);
622 a596b957 2022-07-14 tracey 			evtimer_add(&sock->pause, &backoff);
623 a596b957 2022-07-14 tracey 			return;
624 a596b957 2022-07-14 tracey 		default:
625 a596b957 2022-07-14 tracey 			log_warn("%s: accept", __func__);
626 a596b957 2022-07-14 tracey 		}
627 a596b957 2022-07-14 tracey 	}
628 a596b957 2022-07-14 tracey 
629 a596b957 2022-07-14 tracey 	if (client_cnt > GOTWEBD_MAXCLIENTS)
630 a596b957 2022-07-14 tracey 		goto err;
631 a596b957 2022-07-14 tracey 
632 a596b957 2022-07-14 tracey 	c = calloc(1, sizeof(struct request));
633 a596b957 2022-07-14 tracey 	if (c == NULL) {
634 ed619ca0 2022-12-14 op 		log_warn("%s", __func__);
635 ed619ca0 2022-12-14 op 		close(s);
636 ed619ca0 2022-12-14 op 		cgi_inflight--;
637 ed619ca0 2022-12-14 op 		return;
638 ed619ca0 2022-12-14 op 	}
639 ed619ca0 2022-12-14 op 
640 62eab86e 2023-09-13 op 	c->tp = template(c, &fcgi_write, c->outbuf, sizeof(c->outbuf));
641 ed619ca0 2022-12-14 op 	if (c->tp == NULL) {
642 a596b957 2022-07-14 tracey 		log_warn("%s", __func__);
643 a596b957 2022-07-14 tracey 		close(s);
644 a596b957 2022-07-14 tracey 		cgi_inflight--;
645 ed619ca0 2022-12-14 op 		free(c);
646 a596b957 2022-07-14 tracey 		return;
647 a596b957 2022-07-14 tracey 	}
648 a596b957 2022-07-14 tracey 
649 a596b957 2022-07-14 tracey 	c->fd = s;
650 a596b957 2022-07-14 tracey 	c->sock = sock;
651 a596b957 2022-07-14 tracey 	memcpy(c->priv_fd, sock->priv_fd, sizeof(c->priv_fd));
652 a596b957 2022-07-14 tracey 	c->buf_pos = 0;
653 a596b957 2022-07-14 tracey 	c->buf_len = 0;
654 a596b957 2022-07-14 tracey 	c->request_started = 0;
655 a596b957 2022-07-14 tracey 	c->sock->client_status = CLIENT_CONNECT;
656 a596b957 2022-07-14 tracey 
657 5add7f42 2023-03-10 op 	event_set(&c->ev, s, EV_READ|EV_PERSIST, fcgi_request, c);
658 a596b957 2022-07-14 tracey 	event_add(&c->ev, NULL);
659 a596b957 2022-07-14 tracey 
660 a596b957 2022-07-14 tracey 	evtimer_set(&c->tmo, fcgi_timeout, c);
661 a596b957 2022-07-14 tracey 	evtimer_add(&c->tmo, &timeout);
662 a596b957 2022-07-14 tracey 
663 a596b957 2022-07-14 tracey 	client_cnt++;
664 a596b957 2022-07-14 tracey 
665 a596b957 2022-07-14 tracey 	return;
666 a596b957 2022-07-14 tracey err:
667 a596b957 2022-07-14 tracey 	cgi_inflight--;
668 a596b957 2022-07-14 tracey 	close(s);
669 a596b957 2022-07-14 tracey 	if (c != NULL)
670 a596b957 2022-07-14 tracey 		free(c);
671 a596b957 2022-07-14 tracey }
672 a596b957 2022-07-14 tracey 
673 026ac2c4 2022-08-20 stsp static void
674 a596b957 2022-07-14 tracey sockets_rlimit(int maxfd)
675 a596b957 2022-07-14 tracey {
676 a596b957 2022-07-14 tracey 	struct rlimit rl;
677 a596b957 2022-07-14 tracey 
678 a596b957 2022-07-14 tracey 	if (getrlimit(RLIMIT_NOFILE, &rl) == -1)
679 a596b957 2022-07-14 tracey 		fatal("%s: failed to get resource limit", __func__);
680 d6267a62 2022-07-17 naddy 	log_debug("%s: max open files %llu", __func__,
681 d6267a62 2022-07-17 naddy 	    (unsigned long long)rl.rlim_max);
682 a596b957 2022-07-14 tracey 
683 a596b957 2022-07-14 tracey 	/*
684 a596b957 2022-07-14 tracey 	 * Allow the maximum number of open file descriptors for this
685 a596b957 2022-07-14 tracey 	 * login class (which should be the class "daemon" by default).
686 a596b957 2022-07-14 tracey 	 */
687 a596b957 2022-07-14 tracey 	if (maxfd == -1)
688 a596b957 2022-07-14 tracey 		rl.rlim_cur = rl.rlim_max;
689 a596b957 2022-07-14 tracey 	else
690 a596b957 2022-07-14 tracey 		rl.rlim_cur = MAXIMUM(rl.rlim_max, (rlim_t)maxfd);
691 a596b957 2022-07-14 tracey 	if (setrlimit(RLIMIT_NOFILE, &rl) == -1)
692 a596b957 2022-07-14 tracey 		fatal("%s: failed to set resource limit", __func__);
693 d6267a62 2022-07-17 naddy }