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 b5c757f5 2022-09-01 stsp #include "got_repository.h"
 55 a596b957 2022-07-14 tracey 
 56 a596b957 2022-07-14 tracey #include "proc.h"
 57 a596b957 2022-07-14 tracey #include "gotwebd.h"
 58 a596b957 2022-07-14 tracey 
 59 a596b957 2022-07-14 tracey #define SOCKS_BACKLOG 5
 60 a596b957 2022-07-14 tracey #define MAXIMUM(a, b)	(((a) > (b)) ? (a) : (b))
 61 a596b957 2022-07-14 tracey 
 62 a596b957 2022-07-14 tracey 
 63 a596b957 2022-07-14 tracey volatile int client_cnt;
 64 a596b957 2022-07-14 tracey 
 65 026ac2c4 2022-08-20 stsp static struct timeval	timeout = { TIMEOUT_DEFAULT, 0 };
 66 a596b957 2022-07-14 tracey 
 67 026ac2c4 2022-08-20 stsp static void	 sockets_sighdlr(int, short, void *);
 68 026ac2c4 2022-08-20 stsp static void	 sockets_run(struct privsep *, struct privsep_proc *, void *);
 69 026ac2c4 2022-08-20 stsp static void	 sockets_launch(void);
 70 026ac2c4 2022-08-20 stsp static void	 sockets_purge(struct gotwebd *);
 71 026ac2c4 2022-08-20 stsp static void	 sockets_accept_paused(int, short, void *);
 72 026ac2c4 2022-08-20 stsp static void	 sockets_rlimit(int);
 73 a596b957 2022-07-14 tracey 
 74 026ac2c4 2022-08-20 stsp static int	 sockets_dispatch_gotwebd(int, struct privsep_proc *,
 75 026ac2c4 2022-08-20 stsp 		    struct imsg *);
 76 026ac2c4 2022-08-20 stsp static int	 sockets_unix_socket_listen(struct privsep *, struct socket *);
 77 026ac2c4 2022-08-20 stsp static int	 sockets_create_socket(struct address *, in_port_t);
 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 static struct privsep_proc procs[] = {
 89 a596b957 2022-07-14 tracey 	{ "gotwebd",	PROC_GOTWEBD,	sockets_dispatch_gotwebd  },
 90 a596b957 2022-07-14 tracey };
 91 a596b957 2022-07-14 tracey 
 92 a596b957 2022-07-14 tracey void
 93 a596b957 2022-07-14 tracey sockets(struct privsep *ps, struct privsep_proc *p)
 94 a596b957 2022-07-14 tracey {
 95 a596b957 2022-07-14 tracey 	proc_run(ps, p, procs, nitems(procs), sockets_run, NULL);
 96 a596b957 2022-07-14 tracey }
 97 a596b957 2022-07-14 tracey 
 98 026ac2c4 2022-08-20 stsp static void
 99 a596b957 2022-07-14 tracey sockets_run(struct privsep *ps, struct privsep_proc *p, void *arg)
100 a596b957 2022-07-14 tracey {
101 a596b957 2022-07-14 tracey 	if (config_init(ps->ps_env) == -1)
102 a596b957 2022-07-14 tracey 		fatal("failed to initialize configuration");
103 a596b957 2022-07-14 tracey 
104 a596b957 2022-07-14 tracey 	p->p_shutdown = sockets_shutdown;
105 a596b957 2022-07-14 tracey 
106 a596b957 2022-07-14 tracey 	sockets_rlimit(-1);
107 a596b957 2022-07-14 tracey 
108 a596b957 2022-07-14 tracey 	signal_del(&ps->ps_evsigchld);
109 a596b957 2022-07-14 tracey 	signal_set(&ps->ps_evsigchld, SIGCHLD, sockets_sighdlr, ps);
110 a596b957 2022-07-14 tracey 	signal_add(&ps->ps_evsigchld, NULL);
111 a596b957 2022-07-14 tracey 
112 a596b957 2022-07-14 tracey #ifndef PROFILE
113 a596b957 2022-07-14 tracey 	if (pledge("stdio rpath wpath cpath inet recvfd proc exec sendfd",
114 a596b957 2022-07-14 tracey 	    NULL) == -1)
115 a596b957 2022-07-14 tracey 		fatal("pledge");
116 a596b957 2022-07-14 tracey #endif
117 a596b957 2022-07-14 tracey }
118 a596b957 2022-07-14 tracey 
119 a596b957 2022-07-14 tracey void
120 a596b957 2022-07-14 tracey sockets_parse_sockets(struct gotwebd *env)
121 a596b957 2022-07-14 tracey {
122 a596b957 2022-07-14 tracey 	struct server *srv;
123 610dd8c9 2022-08-19 stsp 	struct address *a;
124 4fcc9f74 2022-08-16 stsp 	struct socket *new_sock = NULL;
125 610dd8c9 2022-08-19 stsp 	int sock_id = 1;
126 a596b957 2022-07-14 tracey 
127 2ad48e9a 2022-08-16 stsp 	TAILQ_FOREACH(srv, &env->servers, entry) {
128 a596b957 2022-07-14 tracey 		if (srv->unix_socket) {
129 610dd8c9 2022-08-19 stsp 			new_sock = sockets_conf_new_socket_unix(env, srv,
130 610dd8c9 2022-08-19 stsp 			    sock_id);
131 4fcc9f74 2022-08-16 stsp 			if (new_sock) {
132 610dd8c9 2022-08-19 stsp 				sock_id++;
133 4fcc9f74 2022-08-16 stsp 				TAILQ_INSERT_TAIL(&env->sockets, new_sock,
134 4fcc9f74 2022-08-16 stsp 				    entry);
135 a596b957 2022-07-14 tracey 			}
136 610dd8c9 2022-08-19 stsp 		}
137 a596b957 2022-07-14 tracey 
138 610dd8c9 2022-08-19 stsp 		if (srv->fcgi_socket) {
139 610dd8c9 2022-08-19 stsp 			if (TAILQ_EMPTY(&srv->al)) {
140 610dd8c9 2022-08-19 stsp 				fatalx("%s: server %s has no IP addresses to "
141 610dd8c9 2022-08-19 stsp 				    "listen for FCGI connections", __func__,
142 610dd8c9 2022-08-19 stsp 				    srv->name);
143 4fcc9f74 2022-08-16 stsp 			}
144 610dd8c9 2022-08-19 stsp 			TAILQ_FOREACH(a, &srv->al, entry) {
145 610dd8c9 2022-08-19 stsp 				if (a->ss.ss_family != AF_INET &&
146 610dd8c9 2022-08-19 stsp 				    a->ss.ss_family != AF_INET6)
147 610dd8c9 2022-08-19 stsp 					continue;
148 610dd8c9 2022-08-19 stsp 				new_sock = sockets_conf_new_socket_fcgi(env,
149 610dd8c9 2022-08-19 stsp 				    srv, sock_id, a);
150 610dd8c9 2022-08-19 stsp 				if (new_sock) {
151 610dd8c9 2022-08-19 stsp 					sock_id++;
152 610dd8c9 2022-08-19 stsp 					TAILQ_INSERT_TAIL(&env->sockets,
153 610dd8c9 2022-08-19 stsp 					    new_sock, entry);
154 610dd8c9 2022-08-19 stsp 				}
155 a596b957 2022-07-14 tracey 			}
156 a596b957 2022-07-14 tracey 		}
157 a596b957 2022-07-14 tracey 	}
158 a596b957 2022-07-14 tracey }
159 a596b957 2022-07-14 tracey 
160 026ac2c4 2022-08-20 stsp static struct socket *
161 610dd8c9 2022-08-19 stsp sockets_conf_new_socket_unix(struct gotwebd *env, struct server *srv, int id)
162 a596b957 2022-07-14 tracey {
163 a596b957 2022-07-14 tracey 	struct socket *sock;
164 a596b957 2022-07-14 tracey 	int n;
165 a596b957 2022-07-14 tracey 
166 a596b957 2022-07-14 tracey 	if ((sock = calloc(1, sizeof(*sock))) == NULL)
167 a596b957 2022-07-14 tracey 		fatalx("%s: calloc", __func__);
168 a596b957 2022-07-14 tracey 
169 a596b957 2022-07-14 tracey 	sock->conf.id = id;
170 a596b957 2022-07-14 tracey 	sock->fd = -1;
171 610dd8c9 2022-08-19 stsp 	sock->conf.af_type = AF_UNIX;
172 a596b957 2022-07-14 tracey 
173 610dd8c9 2022-08-19 stsp 	if (strlcpy(sock->conf.unix_socket_name,
174 610dd8c9 2022-08-19 stsp 	    srv->unix_socket_name,
175 610dd8c9 2022-08-19 stsp 	    sizeof(sock->conf.unix_socket_name)) >=
176 610dd8c9 2022-08-19 stsp 	    sizeof(sock->conf.unix_socket_name)) {
177 610dd8c9 2022-08-19 stsp 		free(sock);
178 610dd8c9 2022-08-19 stsp 		fatalx("%s: strlcpy", __func__);
179 4fcc9f74 2022-08-16 stsp 	}
180 a596b957 2022-07-14 tracey 
181 a596b957 2022-07-14 tracey 	n = snprintf(sock->conf.name, GOTWEBD_MAXTEXT, "%s_parent",
182 a596b957 2022-07-14 tracey 	    srv->name);
183 438d0cc3 2022-08-16 op 	if (n < 0 || (size_t)n >= GOTWEBD_MAXTEXT) {
184 a596b957 2022-07-14 tracey 		free(sock);
185 a596b957 2022-07-14 tracey 		fatalx("%s: snprintf", __func__);
186 a596b957 2022-07-14 tracey 	}
187 a596b957 2022-07-14 tracey 
188 a596b957 2022-07-14 tracey 	if (strlcpy(sock->conf.srv_name, srv->name,
189 a596b957 2022-07-14 tracey 	    sizeof(sock->conf.srv_name)) >= sizeof(sock->conf.srv_name)) {
190 a596b957 2022-07-14 tracey 		free(sock);
191 a596b957 2022-07-14 tracey 		fatalx("%s: strlcpy", __func__);
192 a596b957 2022-07-14 tracey 	}
193 a596b957 2022-07-14 tracey 
194 610dd8c9 2022-08-19 stsp 	return sock;
195 610dd8c9 2022-08-19 stsp }
196 4fcc9f74 2022-08-16 stsp 
197 026ac2c4 2022-08-20 stsp static struct socket *
198 610dd8c9 2022-08-19 stsp sockets_conf_new_socket_fcgi(struct gotwebd *env, struct server *srv, int id,
199 610dd8c9 2022-08-19 stsp     struct address *a)
200 610dd8c9 2022-08-19 stsp {
201 610dd8c9 2022-08-19 stsp 	struct socket *sock;
202 610dd8c9 2022-08-19 stsp 	struct address *acp;
203 610dd8c9 2022-08-19 stsp 	int n;
204 a596b957 2022-07-14 tracey 
205 610dd8c9 2022-08-19 stsp 	if ((sock = calloc(1, sizeof(*sock))) == NULL)
206 610dd8c9 2022-08-19 stsp 		fatalx("%s: calloc", __func__);
207 4fcc9f74 2022-08-16 stsp 
208 610dd8c9 2022-08-19 stsp 	sock->conf.id = id;
209 610dd8c9 2022-08-19 stsp 	sock->fd = -1;
210 610dd8c9 2022-08-19 stsp 	sock->conf.af_type = a->ss.ss_family;
211 610dd8c9 2022-08-19 stsp 
212 67d8de2a 2022-08-29 stsp 	sock->conf.fcgi_socket_port = a->port;
213 610dd8c9 2022-08-19 stsp 
214 610dd8c9 2022-08-19 stsp 	n = snprintf(sock->conf.name, GOTWEBD_MAXTEXT, "%s_parent",
215 610dd8c9 2022-08-19 stsp 	    srv->name);
216 610dd8c9 2022-08-19 stsp 	if (n < 0 || (size_t)n >= GOTWEBD_MAXTEXT) {
217 4fcc9f74 2022-08-16 stsp 		free(sock);
218 610dd8c9 2022-08-19 stsp 		fatalx("%s: snprintf", __func__);
219 4fcc9f74 2022-08-16 stsp 	}
220 4fcc9f74 2022-08-16 stsp 
221 610dd8c9 2022-08-19 stsp 	if (strlcpy(sock->conf.srv_name, srv->name,
222 610dd8c9 2022-08-19 stsp 	    sizeof(sock->conf.srv_name)) >= sizeof(sock->conf.srv_name)) {
223 610dd8c9 2022-08-19 stsp 		free(sock);
224 610dd8c9 2022-08-19 stsp 		fatalx("%s: strlcpy", __func__);
225 610dd8c9 2022-08-19 stsp 	}
226 610dd8c9 2022-08-19 stsp 
227 610dd8c9 2022-08-19 stsp 	acp = &sock->conf.addr;
228 610dd8c9 2022-08-19 stsp 
229 610dd8c9 2022-08-19 stsp 	memcpy(&acp->ss, &a->ss, sizeof(acp->ss));
230 610dd8c9 2022-08-19 stsp 	acp->ipproto = a->ipproto;
231 610dd8c9 2022-08-19 stsp 	acp->prefixlen = a->prefixlen;
232 610dd8c9 2022-08-19 stsp 	acp->port = a->port;
233 610dd8c9 2022-08-19 stsp 	if (strlen(a->ifname) != 0) {
234 610dd8c9 2022-08-19 stsp 		if (strlcpy(acp->ifname, a->ifname,
235 610dd8c9 2022-08-19 stsp 		    sizeof(acp->ifname)) >= sizeof(acp->ifname)) {
236 610dd8c9 2022-08-19 stsp 			fatalx("%s: interface name truncated",
237 610dd8c9 2022-08-19 stsp 			    __func__);
238 610dd8c9 2022-08-19 stsp 		}
239 610dd8c9 2022-08-19 stsp 	}
240 610dd8c9 2022-08-19 stsp 
241 a596b957 2022-07-14 tracey 	return (sock);
242 a596b957 2022-07-14 tracey }
243 a596b957 2022-07-14 tracey 
244 026ac2c4 2022-08-20 stsp static void
245 a596b957 2022-07-14 tracey sockets_launch(void)
246 a596b957 2022-07-14 tracey {
247 a596b957 2022-07-14 tracey 	struct socket *sock;
248 a596b957 2022-07-14 tracey 
249 2ad48e9a 2022-08-16 stsp 	TAILQ_FOREACH(sock, &gotwebd_env->sockets, entry) {
250 a596b957 2022-07-14 tracey 		log_debug("%s: configuring socket %d (%d)", __func__,
251 a596b957 2022-07-14 tracey 		    sock->conf.id, sock->fd);
252 a596b957 2022-07-14 tracey 
253 a596b957 2022-07-14 tracey 		event_set(&sock->ev, sock->fd, EV_READ | EV_PERSIST,
254 a596b957 2022-07-14 tracey 		    sockets_socket_accept, sock);
255 a596b957 2022-07-14 tracey 
256 a596b957 2022-07-14 tracey 		if (event_add(&sock->ev, NULL))
257 a596b957 2022-07-14 tracey 			fatalx("event add sock");
258 a596b957 2022-07-14 tracey 
259 a596b957 2022-07-14 tracey 		evtimer_set(&sock->pause, sockets_accept_paused, sock);
260 a596b957 2022-07-14 tracey 
261 a596b957 2022-07-14 tracey 		log_debug("%s: running socket listener %d", __func__,
262 a596b957 2022-07-14 tracey 		    sock->conf.id);
263 a596b957 2022-07-14 tracey 	}
264 a596b957 2022-07-14 tracey }
265 a596b957 2022-07-14 tracey 
266 026ac2c4 2022-08-20 stsp static void
267 a596b957 2022-07-14 tracey sockets_purge(struct gotwebd *env)
268 a596b957 2022-07-14 tracey {
269 a596b957 2022-07-14 tracey 	struct socket *sock, *tsock;
270 a596b957 2022-07-14 tracey 
271 a596b957 2022-07-14 tracey 	/* shutdown and remove sockets */
272 2ad48e9a 2022-08-16 stsp 	TAILQ_FOREACH_SAFE(sock, &env->sockets, entry, tsock) {
273 a596b957 2022-07-14 tracey 		if (event_initialized(&sock->ev))
274 a596b957 2022-07-14 tracey 			event_del(&sock->ev);
275 a596b957 2022-07-14 tracey 		if (evtimer_initialized(&sock->evt))
276 a596b957 2022-07-14 tracey 			evtimer_del(&sock->evt);
277 a596b957 2022-07-14 tracey 		if (evtimer_initialized(&sock->pause))
278 a596b957 2022-07-14 tracey 			evtimer_del(&sock->pause);
279 a596b957 2022-07-14 tracey 		if (sock->fd != -1)
280 a596b957 2022-07-14 tracey 			close(sock->fd);
281 2ad48e9a 2022-08-16 stsp 		TAILQ_REMOVE(&env->sockets, sock, entry);
282 a596b957 2022-07-14 tracey 	}
283 a596b957 2022-07-14 tracey }
284 a596b957 2022-07-14 tracey 
285 026ac2c4 2022-08-20 stsp static int
286 a596b957 2022-07-14 tracey sockets_dispatch_gotwebd(int fd, struct privsep_proc *p, struct imsg *imsg)
287 a596b957 2022-07-14 tracey {
288 a596b957 2022-07-14 tracey 	struct privsep *ps = p->p_ps;
289 a596b957 2022-07-14 tracey 	int res = 0, cmd = 0, verbose;
290 a596b957 2022-07-14 tracey 
291 a596b957 2022-07-14 tracey 	switch (imsg->hdr.type) {
292 a596b957 2022-07-14 tracey 	case IMSG_CFG_SRV:
293 a596b957 2022-07-14 tracey 		config_getserver(gotwebd_env, imsg);
294 a596b957 2022-07-14 tracey 		break;
295 a596b957 2022-07-14 tracey 	case IMSG_CFG_SOCK:
296 a596b957 2022-07-14 tracey 		config_getsock(gotwebd_env, imsg);
297 a596b957 2022-07-14 tracey 		break;
298 a596b957 2022-07-14 tracey 	case IMSG_CFG_FD:
299 a596b957 2022-07-14 tracey 		config_getfd(gotwebd_env, imsg);
300 a596b957 2022-07-14 tracey 		break;
301 a596b957 2022-07-14 tracey 	case IMSG_CFG_DONE:
302 a596b957 2022-07-14 tracey 		config_getcfg(gotwebd_env, imsg);
303 a596b957 2022-07-14 tracey 		break;
304 a596b957 2022-07-14 tracey 	case IMSG_CTL_START:
305 a596b957 2022-07-14 tracey 		sockets_launch();
306 a596b957 2022-07-14 tracey 		break;
307 a596b957 2022-07-14 tracey 	case IMSG_CTL_VERBOSE:
308 a596b957 2022-07-14 tracey 		IMSG_SIZE_CHECK(imsg, &verbose);
309 a596b957 2022-07-14 tracey 		memcpy(&verbose, imsg->data, sizeof(verbose));
310 a596b957 2022-07-14 tracey 		log_setverbose(verbose);
311 a596b957 2022-07-14 tracey 		break;
312 a596b957 2022-07-14 tracey 	default:
313 a596b957 2022-07-14 tracey 		return -1;
314 a596b957 2022-07-14 tracey 	}
315 a596b957 2022-07-14 tracey 
316 a596b957 2022-07-14 tracey 	switch (cmd) {
317 a596b957 2022-07-14 tracey 	case 0:
318 a596b957 2022-07-14 tracey 		break;
319 a596b957 2022-07-14 tracey 	default:
320 a596b957 2022-07-14 tracey 		if (proc_compose_imsg(ps, PROC_GOTWEBD, -1, cmd,
321 a596b957 2022-07-14 tracey 		    imsg->hdr.peerid, -1, &res, sizeof(res)) == -1)
322 a596b957 2022-07-14 tracey 			return -1;
323 a596b957 2022-07-14 tracey 		break;
324 a596b957 2022-07-14 tracey 	}
325 a596b957 2022-07-14 tracey 
326 a596b957 2022-07-14 tracey 	return 0;
327 a596b957 2022-07-14 tracey }
328 a596b957 2022-07-14 tracey 
329 026ac2c4 2022-08-20 stsp static void
330 a596b957 2022-07-14 tracey sockets_sighdlr(int sig, short event, void *arg)
331 a596b957 2022-07-14 tracey {
332 a596b957 2022-07-14 tracey 	switch (sig) {
333 a596b957 2022-07-14 tracey 	case SIGHUP:
334 a596b957 2022-07-14 tracey 		log_info("%s: ignoring SIGHUP", __func__);
335 a596b957 2022-07-14 tracey 		break;
336 a596b957 2022-07-14 tracey 	case SIGPIPE:
337 a596b957 2022-07-14 tracey 		log_info("%s: ignoring SIGPIPE", __func__);
338 a596b957 2022-07-14 tracey 		break;
339 a596b957 2022-07-14 tracey 	case SIGUSR1:
340 a596b957 2022-07-14 tracey 		log_info("%s: ignoring SIGUSR1", __func__);
341 a596b957 2022-07-14 tracey 		break;
342 a596b957 2022-07-14 tracey 	case SIGCHLD:
343 a596b957 2022-07-14 tracey 		break;
344 a596b957 2022-07-14 tracey 	default:
345 a596b957 2022-07-14 tracey 		log_info("SIGNAL: %d", sig);
346 a596b957 2022-07-14 tracey 		fatalx("unexpected signal");
347 a596b957 2022-07-14 tracey 	}
348 a596b957 2022-07-14 tracey }
349 a596b957 2022-07-14 tracey 
350 a596b957 2022-07-14 tracey void
351 a596b957 2022-07-14 tracey sockets_shutdown(void)
352 a596b957 2022-07-14 tracey {
353 a596b957 2022-07-14 tracey 	struct server *srv, *tsrv;
354 a596b957 2022-07-14 tracey 	struct socket *sock, *tsock;
355 b5c757f5 2022-09-01 stsp 	int i;
356 a596b957 2022-07-14 tracey 
357 a596b957 2022-07-14 tracey 	sockets_purge(gotwebd_env);
358 a596b957 2022-07-14 tracey 
359 a596b957 2022-07-14 tracey 	/* clean sockets */
360 2ad48e9a 2022-08-16 stsp 	TAILQ_FOREACH_SAFE(sock, &gotwebd_env->sockets, entry, tsock) {
361 2ad48e9a 2022-08-16 stsp 		TAILQ_REMOVE(&gotwebd_env->sockets, sock, entry);
362 a596b957 2022-07-14 tracey 		close(sock->fd);
363 a596b957 2022-07-14 tracey 		free(sock);
364 a596b957 2022-07-14 tracey 	}
365 a596b957 2022-07-14 tracey 
366 a596b957 2022-07-14 tracey 	/* clean servers */
367 b5c757f5 2022-09-01 stsp 	TAILQ_FOREACH_SAFE(srv, &gotwebd_env->servers, entry, tsrv) {
368 b5c757f5 2022-09-01 stsp 		for (i = 0; i < srv->ncached_repos; i++)
369 b5c757f5 2022-09-01 stsp 			got_repo_close(srv->cached_repos[i].repo);
370 a596b957 2022-07-14 tracey 		free(srv);
371 b5c757f5 2022-09-01 stsp 	}
372 a596b957 2022-07-14 tracey 
373 a596b957 2022-07-14 tracey 	free(gotwebd_env);
374 a596b957 2022-07-14 tracey }
375 a596b957 2022-07-14 tracey 
376 a596b957 2022-07-14 tracey int
377 a596b957 2022-07-14 tracey sockets_privinit(struct gotwebd *env, struct socket *sock)
378 a596b957 2022-07-14 tracey {
379 a596b957 2022-07-14 tracey 	struct privsep *ps = env->gotwebd_ps;
380 a596b957 2022-07-14 tracey 
381 4fcc9f74 2022-08-16 stsp 	if (sock->conf.af_type == AF_UNIX) {
382 a596b957 2022-07-14 tracey 		log_debug("%s: initializing unix socket %s", __func__,
383 a596b957 2022-07-14 tracey 		    sock->conf.unix_socket_name);
384 a596b957 2022-07-14 tracey 		sock->fd = sockets_unix_socket_listen(ps, sock);
385 a596b957 2022-07-14 tracey 		if (sock->fd == -1) {
386 a596b957 2022-07-14 tracey 			log_warnx("%s: create unix socket failed", __func__);
387 a596b957 2022-07-14 tracey 			return -1;
388 a596b957 2022-07-14 tracey 		}
389 a596b957 2022-07-14 tracey 	}
390 a596b957 2022-07-14 tracey 
391 4fcc9f74 2022-08-16 stsp 	if (sock->conf.af_type == AF_INET || sock->conf.af_type == AF_INET6) {
392 4fcc9f74 2022-08-16 stsp 		log_debug("%s: initializing %s FCGI socket on port %d for %s",
393 4fcc9f74 2022-08-16 stsp 		    __func__, sock->conf.af_type == AF_INET ? "inet" : "inet6",
394 4fcc9f74 2022-08-16 stsp 		    sock->conf.fcgi_socket_port, sock->conf.name);
395 610dd8c9 2022-08-19 stsp 		sock->fd = sockets_create_socket(&sock->conf.addr,
396 a596b957 2022-07-14 tracey 		    sock->conf.fcgi_socket_port);
397 a596b957 2022-07-14 tracey 		if (sock->fd == -1) {
398 610dd8c9 2022-08-19 stsp 			log_warnx("%s: create FCGI socket failed", __func__);
399 a596b957 2022-07-14 tracey 			return -1;
400 a596b957 2022-07-14 tracey 		}
401 a596b957 2022-07-14 tracey 	}
402 a596b957 2022-07-14 tracey 
403 a596b957 2022-07-14 tracey 	return 0;
404 a596b957 2022-07-14 tracey }
405 a596b957 2022-07-14 tracey 
406 026ac2c4 2022-08-20 stsp static int
407 a596b957 2022-07-14 tracey sockets_unix_socket_listen(struct privsep *ps, struct socket *sock)
408 a596b957 2022-07-14 tracey {
409 a596b957 2022-07-14 tracey 	struct gotwebd *env = ps->ps_env;
410 a596b957 2022-07-14 tracey 	struct sockaddr_un sun;
411 a596b957 2022-07-14 tracey 	struct socket *tsock;
412 a596b957 2022-07-14 tracey 	int u_fd = -1;
413 a596b957 2022-07-14 tracey 	mode_t old_umask, mode;
414 a596b957 2022-07-14 tracey 
415 2ad48e9a 2022-08-16 stsp 	TAILQ_FOREACH(tsock, &env->sockets, entry) {
416 a596b957 2022-07-14 tracey 		if (strcmp(tsock->conf.unix_socket_name,
417 a596b957 2022-07-14 tracey 		    sock->conf.unix_socket_name) == 0 &&
418 a596b957 2022-07-14 tracey 		    tsock->fd != -1)
419 a596b957 2022-07-14 tracey 			return (tsock->fd);
420 a596b957 2022-07-14 tracey 	}
421 a596b957 2022-07-14 tracey 
422 a596b957 2022-07-14 tracey 	u_fd = socket(AF_UNIX, SOCK_STREAM | SOCK_NONBLOCK| SOCK_CLOEXEC, 0);
423 a596b957 2022-07-14 tracey 	if (u_fd == -1) {
424 a596b957 2022-07-14 tracey 		log_warn("%s: socket", __func__);
425 a596b957 2022-07-14 tracey 		return -1;
426 a596b957 2022-07-14 tracey 	}
427 a596b957 2022-07-14 tracey 
428 a596b957 2022-07-14 tracey 	sun.sun_family = AF_UNIX;
429 a596b957 2022-07-14 tracey 	if (strlcpy(sun.sun_path, sock->conf.unix_socket_name,
430 a596b957 2022-07-14 tracey 	    sizeof(sun.sun_path)) >= sizeof(sun.sun_path)) {
431 a596b957 2022-07-14 tracey 		log_warn("%s: %s name too long", __func__,
432 a596b957 2022-07-14 tracey 		    sock->conf.unix_socket_name);
433 a596b957 2022-07-14 tracey 		close(u_fd);
434 a596b957 2022-07-14 tracey 		return -1;
435 a596b957 2022-07-14 tracey 	}
436 a596b957 2022-07-14 tracey 
437 a596b957 2022-07-14 tracey 	if (unlink(sock->conf.unix_socket_name) == -1) {
438 a596b957 2022-07-14 tracey 		if (errno != ENOENT) {
439 a596b957 2022-07-14 tracey 			log_warn("%s: unlink %s", __func__,
440 a596b957 2022-07-14 tracey 			    sock->conf.unix_socket_name);
441 a596b957 2022-07-14 tracey 			close(u_fd);
442 a596b957 2022-07-14 tracey 			return -1;
443 a596b957 2022-07-14 tracey 		}
444 a596b957 2022-07-14 tracey 	}
445 a596b957 2022-07-14 tracey 
446 a596b957 2022-07-14 tracey 	old_umask = umask(S_IXUSR|S_IXGRP|S_IWOTH|S_IROTH|S_IXOTH);
447 a596b957 2022-07-14 tracey 	mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP;
448 a596b957 2022-07-14 tracey 
449 a596b957 2022-07-14 tracey 	if (bind(u_fd, (struct sockaddr *)&sun, sizeof(sun)) == -1) {
450 a596b957 2022-07-14 tracey 		log_warn("%s: bind: %s", __func__, sock->conf.unix_socket_name);
451 a596b957 2022-07-14 tracey 		close(u_fd);
452 a596b957 2022-07-14 tracey 		(void)umask(old_umask);
453 a596b957 2022-07-14 tracey 		return -1;
454 a596b957 2022-07-14 tracey 	}
455 a596b957 2022-07-14 tracey 
456 a596b957 2022-07-14 tracey 	(void)umask(old_umask);
457 a596b957 2022-07-14 tracey 
458 a596b957 2022-07-14 tracey 	if (chmod(sock->conf.unix_socket_name, mode) == -1) {
459 a596b957 2022-07-14 tracey 		log_warn("%s: chmod", __func__);
460 a596b957 2022-07-14 tracey 		close(u_fd);
461 a596b957 2022-07-14 tracey 		(void)unlink(sock->conf.unix_socket_name);
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 	if (chown(sock->conf.unix_socket_name, ps->ps_pw->pw_uid,
466 a596b957 2022-07-14 tracey 	    ps->ps_pw->pw_gid) == -1) {
467 a596b957 2022-07-14 tracey 		log_warn("%s: chown", __func__);
468 a596b957 2022-07-14 tracey 		close(u_fd);
469 a596b957 2022-07-14 tracey 		(void)unlink(sock->conf.unix_socket_name);
470 a596b957 2022-07-14 tracey 		return -1;
471 a596b957 2022-07-14 tracey 	}
472 a596b957 2022-07-14 tracey 
473 a596b957 2022-07-14 tracey 	if (listen(u_fd, SOCKS_BACKLOG) == -1) {
474 a596b957 2022-07-14 tracey 		log_warn("%s: listen", __func__);
475 a596b957 2022-07-14 tracey 		return -1;
476 a596b957 2022-07-14 tracey 	}
477 a596b957 2022-07-14 tracey 
478 a596b957 2022-07-14 tracey 	return u_fd;
479 a596b957 2022-07-14 tracey }
480 a596b957 2022-07-14 tracey 
481 026ac2c4 2022-08-20 stsp static int
482 610dd8c9 2022-08-19 stsp sockets_create_socket(struct address *a, in_port_t port)
483 a596b957 2022-07-14 tracey {
484 a596b957 2022-07-14 tracey 	struct addrinfo hints;
485 a596b957 2022-07-14 tracey 	int fd = -1, o_val = 1, flags;
486 a596b957 2022-07-14 tracey 
487 a596b957 2022-07-14 tracey 	memset(&hints, 0, sizeof(hints));
488 a596b957 2022-07-14 tracey 	hints.ai_family = AF_UNSPEC;
489 a596b957 2022-07-14 tracey 	hints.ai_socktype = SOCK_STREAM;
490 a596b957 2022-07-14 tracey 	hints.ai_flags |= AI_PASSIVE;
491 a596b957 2022-07-14 tracey 
492 610dd8c9 2022-08-19 stsp 	switch (a->ss.ss_family) {
493 610dd8c9 2022-08-19 stsp 	case AF_INET:
494 859aa9f4 2022-08-19 stsp 		((struct sockaddr_in *)(&a->ss))->sin_port = htons(port);
495 610dd8c9 2022-08-19 stsp 		break;
496 610dd8c9 2022-08-19 stsp 	case AF_INET6:
497 859aa9f4 2022-08-19 stsp 		((struct sockaddr_in6 *)(&a->ss))->sin6_port = htons(port);
498 610dd8c9 2022-08-19 stsp 		break;
499 610dd8c9 2022-08-19 stsp 	default:
500 610dd8c9 2022-08-19 stsp 		log_warnx("%s: unknown address family", __func__);
501 610dd8c9 2022-08-19 stsp 		return -1;
502 610dd8c9 2022-08-19 stsp 	}
503 a596b957 2022-07-14 tracey 
504 610dd8c9 2022-08-19 stsp 	fd = socket(a->ss.ss_family, hints.ai_socktype, a->ipproto);
505 610dd8c9 2022-08-19 stsp 	if (fd == -1)
506 610dd8c9 2022-08-19 stsp 		return -1;
507 a596b957 2022-07-14 tracey 
508 610dd8c9 2022-08-19 stsp 	log_debug("%s: opened socket (%d) for %s", __func__,
509 610dd8c9 2022-08-19 stsp 	    fd, a->ifname);
510 a596b957 2022-07-14 tracey 
511 610dd8c9 2022-08-19 stsp 	if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &o_val,
512 610dd8c9 2022-08-19 stsp 	    sizeof(int)) == -1) {
513 610dd8c9 2022-08-19 stsp 		log_warn("%s: setsockopt error", __func__);
514 610dd8c9 2022-08-19 stsp 		close(fd);
515 610dd8c9 2022-08-19 stsp 		return -1;
516 610dd8c9 2022-08-19 stsp 	}
517 a596b957 2022-07-14 tracey 
518 610dd8c9 2022-08-19 stsp 	/* non-blocking */
519 610dd8c9 2022-08-19 stsp 	flags = fcntl(fd, F_GETFL);
520 610dd8c9 2022-08-19 stsp 	flags |= O_NONBLOCK;
521 610dd8c9 2022-08-19 stsp 	if (fcntl(fd, F_SETFL, flags) == -1) {
522 610dd8c9 2022-08-19 stsp 		log_info("%s: could not enable non-blocking I/O", __func__);
523 610dd8c9 2022-08-19 stsp 		close(fd);
524 610dd8c9 2022-08-19 stsp 		return -1;
525 610dd8c9 2022-08-19 stsp 	}
526 a596b957 2022-07-14 tracey 
527 610dd8c9 2022-08-19 stsp 	if (bind(fd, (struct sockaddr *)&a->ss, a->ss.ss_len) == -1) {
528 610dd8c9 2022-08-19 stsp 		close(fd);
529 610dd8c9 2022-08-19 stsp 		log_info("%s: can't bind to port %d", __func__,
530 610dd8c9 2022-08-19 stsp 		    ntohs(port));
531 610dd8c9 2022-08-19 stsp 		return -1;
532 a596b957 2022-07-14 tracey 	}
533 a596b957 2022-07-14 tracey 
534 610dd8c9 2022-08-19 stsp 	if (listen(fd, SOMAXCONN) == -1) {
535 610dd8c9 2022-08-19 stsp 		log_warn("%s, unable to listen on socket", __func__);
536 610dd8c9 2022-08-19 stsp 		close(fd);
537 610dd8c9 2022-08-19 stsp 		return -1;
538 610dd8c9 2022-08-19 stsp 	}
539 610dd8c9 2022-08-19 stsp 
540 a596b957 2022-07-14 tracey 	return (fd);
541 a596b957 2022-07-14 tracey }
542 a596b957 2022-07-14 tracey 
543 026ac2c4 2022-08-20 stsp static int
544 a596b957 2022-07-14 tracey sockets_accept_reserve(int sockfd, struct sockaddr *addr, socklen_t *addrlen,
545 a596b957 2022-07-14 tracey     int reserve, volatile int *counter)
546 a596b957 2022-07-14 tracey {
547 a596b957 2022-07-14 tracey 	int ret;
548 a596b957 2022-07-14 tracey 
549 a596b957 2022-07-14 tracey 	if (getdtablecount() + reserve +
550 a596b957 2022-07-14 tracey 	    ((*counter + 1) * FD_NEEDED) >= getdtablesize()) {
551 a596b957 2022-07-14 tracey 		log_debug("inflight fds exceeded");
552 a596b957 2022-07-14 tracey 		errno = EMFILE;
553 a596b957 2022-07-14 tracey 		return -1;
554 a596b957 2022-07-14 tracey 	}
555 a596b957 2022-07-14 tracey 
556 a596b957 2022-07-14 tracey 	if ((ret = accept4(sockfd, addr, addrlen,
557 a596b957 2022-07-14 tracey 	    SOCK_NONBLOCK | SOCK_CLOEXEC)) > -1) {
558 a596b957 2022-07-14 tracey 		(*counter)++;
559 a596b957 2022-07-14 tracey 		log_debug("inflight incremented, now %d", *counter);
560 a596b957 2022-07-14 tracey 	}
561 a596b957 2022-07-14 tracey 
562 a596b957 2022-07-14 tracey 	return ret;
563 a596b957 2022-07-14 tracey }
564 a596b957 2022-07-14 tracey 
565 026ac2c4 2022-08-20 stsp static void
566 a596b957 2022-07-14 tracey sockets_accept_paused(int fd, short events, void *arg)
567 a596b957 2022-07-14 tracey {
568 a596b957 2022-07-14 tracey 	struct socket *sock = (struct socket *)arg;
569 a596b957 2022-07-14 tracey 
570 a596b957 2022-07-14 tracey 	event_add(&sock->ev, NULL);
571 a596b957 2022-07-14 tracey }
572 a596b957 2022-07-14 tracey 
573 a596b957 2022-07-14 tracey void
574 a596b957 2022-07-14 tracey sockets_socket_accept(int fd, short event, void *arg)
575 a596b957 2022-07-14 tracey {
576 a596b957 2022-07-14 tracey 	struct socket *sock = (struct socket *)arg;
577 a596b957 2022-07-14 tracey 	struct sockaddr_storage ss;
578 a596b957 2022-07-14 tracey 	struct timeval backoff;
579 a596b957 2022-07-14 tracey 	struct request *c = NULL;
580 a596b957 2022-07-14 tracey 	socklen_t len;
581 a596b957 2022-07-14 tracey 	int s;
582 a596b957 2022-07-14 tracey 
583 a596b957 2022-07-14 tracey 	backoff.tv_sec = 1;
584 a596b957 2022-07-14 tracey 	backoff.tv_usec = 0;
585 a596b957 2022-07-14 tracey 
586 a596b957 2022-07-14 tracey 	event_add(&sock->ev, NULL);
587 a596b957 2022-07-14 tracey 	if (event & EV_TIMEOUT)
588 a596b957 2022-07-14 tracey 		return;
589 a596b957 2022-07-14 tracey 
590 a596b957 2022-07-14 tracey 	len = sizeof(ss);
591 a596b957 2022-07-14 tracey 
592 a596b957 2022-07-14 tracey 	s = sockets_accept_reserve(fd, (struct sockaddr *)&ss, &len,
593 a596b957 2022-07-14 tracey 	    FD_RESERVE, &cgi_inflight);
594 a596b957 2022-07-14 tracey 
595 a596b957 2022-07-14 tracey 	if (s == -1) {
596 a596b957 2022-07-14 tracey 		switch (errno) {
597 a596b957 2022-07-14 tracey 		case EINTR:
598 a596b957 2022-07-14 tracey 		case EWOULDBLOCK:
599 a596b957 2022-07-14 tracey 		case ECONNABORTED:
600 a596b957 2022-07-14 tracey 			return;
601 a596b957 2022-07-14 tracey 		case EMFILE:
602 a596b957 2022-07-14 tracey 		case ENFILE:
603 a596b957 2022-07-14 tracey 			event_del(&sock->ev);
604 a596b957 2022-07-14 tracey 			evtimer_add(&sock->pause, &backoff);
605 a596b957 2022-07-14 tracey 			return;
606 a596b957 2022-07-14 tracey 		default:
607 a596b957 2022-07-14 tracey 			log_warn("%s: accept", __func__);
608 a596b957 2022-07-14 tracey 		}
609 a596b957 2022-07-14 tracey 	}
610 a596b957 2022-07-14 tracey 
611 a596b957 2022-07-14 tracey 	if (client_cnt > GOTWEBD_MAXCLIENTS)
612 a596b957 2022-07-14 tracey 		goto err;
613 a596b957 2022-07-14 tracey 
614 a596b957 2022-07-14 tracey 	c = calloc(1, sizeof(struct request));
615 a596b957 2022-07-14 tracey 	if (c == NULL) {
616 a596b957 2022-07-14 tracey 		log_warn("%s", __func__);
617 a596b957 2022-07-14 tracey 		close(s);
618 a596b957 2022-07-14 tracey 		cgi_inflight--;
619 a596b957 2022-07-14 tracey 		return;
620 a596b957 2022-07-14 tracey 	}
621 a596b957 2022-07-14 tracey 
622 a596b957 2022-07-14 tracey 	c->fd = s;
623 a596b957 2022-07-14 tracey 	c->sock = sock;
624 a596b957 2022-07-14 tracey 	memcpy(c->priv_fd, sock->priv_fd, sizeof(c->priv_fd));
625 a596b957 2022-07-14 tracey 	c->buf_pos = 0;
626 a596b957 2022-07-14 tracey 	c->buf_len = 0;
627 a596b957 2022-07-14 tracey 	c->request_started = 0;
628 a596b957 2022-07-14 tracey 	c->sock->client_status = CLIENT_CONNECT;
629 a596b957 2022-07-14 tracey 
630 a596b957 2022-07-14 tracey 	event_set(&c->ev, s, EV_READ, fcgi_request, c);
631 a596b957 2022-07-14 tracey 	event_add(&c->ev, NULL);
632 a596b957 2022-07-14 tracey 
633 a596b957 2022-07-14 tracey 	evtimer_set(&c->tmo, fcgi_timeout, c);
634 a596b957 2022-07-14 tracey 	evtimer_add(&c->tmo, &timeout);
635 a596b957 2022-07-14 tracey 
636 a596b957 2022-07-14 tracey 	client_cnt++;
637 a596b957 2022-07-14 tracey 
638 a596b957 2022-07-14 tracey 	return;
639 a596b957 2022-07-14 tracey err:
640 a596b957 2022-07-14 tracey 	cgi_inflight--;
641 a596b957 2022-07-14 tracey 	close(s);
642 a596b957 2022-07-14 tracey 	if (c != NULL)
643 a596b957 2022-07-14 tracey 		free(c);
644 a596b957 2022-07-14 tracey }
645 a596b957 2022-07-14 tracey 
646 026ac2c4 2022-08-20 stsp static void
647 a596b957 2022-07-14 tracey sockets_rlimit(int maxfd)
648 a596b957 2022-07-14 tracey {
649 a596b957 2022-07-14 tracey 	struct rlimit rl;
650 a596b957 2022-07-14 tracey 
651 a596b957 2022-07-14 tracey 	if (getrlimit(RLIMIT_NOFILE, &rl) == -1)
652 a596b957 2022-07-14 tracey 		fatal("%s: failed to get resource limit", __func__);
653 d6267a62 2022-07-17 naddy 	log_debug("%s: max open files %llu", __func__,
654 d6267a62 2022-07-17 naddy 	    (unsigned long long)rl.rlim_max);
655 a596b957 2022-07-14 tracey 
656 a596b957 2022-07-14 tracey 	/*
657 a596b957 2022-07-14 tracey 	 * Allow the maximum number of open file descriptors for this
658 a596b957 2022-07-14 tracey 	 * login class (which should be the class "daemon" by default).
659 a596b957 2022-07-14 tracey 	 */
660 a596b957 2022-07-14 tracey 	if (maxfd == -1)
661 a596b957 2022-07-14 tracey 		rl.rlim_cur = rl.rlim_max;
662 a596b957 2022-07-14 tracey 	else
663 a596b957 2022-07-14 tracey 		rl.rlim_cur = MAXIMUM(rl.rlim_max, (rlim_t)maxfd);
664 a596b957 2022-07-14 tracey 	if (setrlimit(RLIMIT_NOFILE, &rl) == -1)
665 a596b957 2022-07-14 tracey 		fatal("%s: failed to set resource limit", __func__);
666 d6267a62 2022-07-17 naddy }