1 8a35f56c 2022-07-16 thomas /*
  2 8a35f56c 2022-07-16 thomas  * Copyright (c) 2016, 2019, 2020-2021 Tracey Emery <tracey@traceyemery.net>
  3 8a35f56c 2022-07-16 thomas  * Copyright (c) 2015 Mike Larkin <mlarkin@openbsd.org>
  4 8a35f56c 2022-07-16 thomas  * Copyright (c) 2013 David Gwynne <dlg@openbsd.org>
  5 8a35f56c 2022-07-16 thomas  * Copyright (c) 2013 Florian Obser <florian@openbsd.org>
  6 8a35f56c 2022-07-16 thomas  *
  7 8a35f56c 2022-07-16 thomas  * Permission to use, copy, modify, and distribute this software for any
  8 8a35f56c 2022-07-16 thomas  * purpose with or without fee is hereby granted, provided that the above
  9 8a35f56c 2022-07-16 thomas  * copyright notice and this permission notice appear in all copies.
 10 8a35f56c 2022-07-16 thomas  *
 11 8a35f56c 2022-07-16 thomas  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 12 8a35f56c 2022-07-16 thomas  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 13 8a35f56c 2022-07-16 thomas  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 14 8a35f56c 2022-07-16 thomas  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 15 8a35f56c 2022-07-16 thomas  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 16 8a35f56c 2022-07-16 thomas  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 17 8a35f56c 2022-07-16 thomas  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 18 8a35f56c 2022-07-16 thomas  */
 19 4fccd2fe 2023-03-08 thomas 
 20 4fccd2fe 2023-03-08 thomas #include "got_compat.h"
 21 8a35f56c 2022-07-16 thomas 
 22 8a35f56c 2022-07-16 thomas #include <sys/param.h>
 23 8a35f56c 2022-07-16 thomas #include <sys/ioctl.h>
 24 8b925c6c 2022-07-16 thomas #include <sys/queue.h>
 25 8a35f56c 2022-07-16 thomas #include <sys/wait.h>
 26 8a35f56c 2022-07-16 thomas #include <sys/uio.h>
 27 8a35f56c 2022-07-16 thomas #include <sys/resource.h>
 28 8a35f56c 2022-07-16 thomas #include <sys/socket.h>
 29 8a35f56c 2022-07-16 thomas #include <sys/stat.h>
 30 8a35f56c 2022-07-16 thomas #include <sys/time.h>
 31 8a35f56c 2022-07-16 thomas #include <sys/types.h>
 32 8a35f56c 2022-07-16 thomas #include <sys/mman.h>
 33 8a35f56c 2022-07-16 thomas #include <sys/un.h>
 34 8a35f56c 2022-07-16 thomas 
 35 8a35f56c 2022-07-16 thomas #include <net/if.h>
 36 8a35f56c 2022-07-16 thomas #include <netinet/in.h>
 37 8a35f56c 2022-07-16 thomas 
 38 8a35f56c 2022-07-16 thomas #include <errno.h>
 39 8a35f56c 2022-07-16 thomas #include <event.h>
 40 8a35f56c 2022-07-16 thomas #include <fcntl.h>
 41 8a35f56c 2022-07-16 thomas #include <ifaddrs.h>
 42 8a35f56c 2022-07-16 thomas #include <limits.h>
 43 8a35f56c 2022-07-16 thomas #include <netdb.h>
 44 8a35f56c 2022-07-16 thomas #include <poll.h>
 45 8a35f56c 2022-07-16 thomas #include <pwd.h>
 46 8a35f56c 2022-07-16 thomas #include <stddef.h>
 47 8a35f56c 2022-07-16 thomas #include <stdio.h>
 48 8a35f56c 2022-07-16 thomas #include <stdlib.h>
 49 8a35f56c 2022-07-16 thomas #include <string.h>
 50 8a35f56c 2022-07-16 thomas #include <unistd.h>
 51 8a35f56c 2022-07-16 thomas 
 52 8a35f56c 2022-07-16 thomas #include "got_error.h"
 53 8a35f56c 2022-07-16 thomas #include "got_opentemp.h"
 54 161663e7 2023-03-11 thomas #include "got_reference.h"
 55 55e6cffd 2022-09-01 thomas #include "got_repository.h"
 56 8a35f56c 2022-07-16 thomas 
 57 8a35f56c 2022-07-16 thomas #include "proc.h"
 58 8a35f56c 2022-07-16 thomas #include "gotwebd.h"
 59 e7e5fa49 2022-12-30 thomas #include "tmpl.h"
 60 8a35f56c 2022-07-16 thomas 
 61 8a35f56c 2022-07-16 thomas #define SOCKS_BACKLOG 5
 62 8a35f56c 2022-07-16 thomas #define MAXIMUM(a, b)	(((a) > (b)) ? (a) : (b))
 63 8a35f56c 2022-07-16 thomas 
 64 8a35f56c 2022-07-16 thomas 
 65 8a35f56c 2022-07-16 thomas volatile int client_cnt;
 66 8a35f56c 2022-07-16 thomas 
 67 1f6ec068 2022-08-27 thomas static struct timeval	timeout = { TIMEOUT_DEFAULT, 0 };
 68 8a35f56c 2022-07-16 thomas 
 69 1f6ec068 2022-08-27 thomas static void	 sockets_sighdlr(int, short, void *);
 70 1f6ec068 2022-08-27 thomas static void	 sockets_run(struct privsep *, struct privsep_proc *, void *);
 71 1f6ec068 2022-08-27 thomas static void	 sockets_launch(void);
 72 1f6ec068 2022-08-27 thomas static void	 sockets_purge(struct gotwebd *);
 73 1f6ec068 2022-08-27 thomas static void	 sockets_accept_paused(int, short, void *);
 74 1f6ec068 2022-08-27 thomas static void	 sockets_rlimit(int);
 75 8a35f56c 2022-07-16 thomas 
 76 1f6ec068 2022-08-27 thomas static int	 sockets_dispatch_gotwebd(int, struct privsep_proc *,
 77 1f6ec068 2022-08-27 thomas 		    struct imsg *);
 78 1f6ec068 2022-08-27 thomas static int	 sockets_unix_socket_listen(struct privsep *, struct socket *);
 79 1f6ec068 2022-08-27 thomas static int	 sockets_create_socket(struct address *, in_port_t);
 80 1f6ec068 2022-08-27 thomas static int	 sockets_accept_reserve(int, struct sockaddr *, socklen_t *,
 81 1f6ec068 2022-08-27 thomas 		    int, volatile int *);
 82 8a35f56c 2022-07-16 thomas 
 83 1f6ec068 2022-08-27 thomas static struct socket *sockets_conf_new_socket_unix(struct gotwebd *,
 84 1f6ec068 2022-08-27 thomas 		    struct server *, int);
 85 1f6ec068 2022-08-27 thomas static struct socket *sockets_conf_new_socket_fcgi(struct gotwebd *,
 86 1f6ec068 2022-08-27 thomas 		    struct server *, int, struct address *);
 87 8a35f56c 2022-07-16 thomas 
 88 8a35f56c 2022-07-16 thomas int cgi_inflight = 0;
 89 8a35f56c 2022-07-16 thomas 
 90 8a35f56c 2022-07-16 thomas static struct privsep_proc procs[] = {
 91 8a35f56c 2022-07-16 thomas 	{ "gotwebd",	PROC_GOTWEBD,	sockets_dispatch_gotwebd  },
 92 8a35f56c 2022-07-16 thomas };
 93 8a35f56c 2022-07-16 thomas 
 94 8a35f56c 2022-07-16 thomas void
 95 8a35f56c 2022-07-16 thomas sockets(struct privsep *ps, struct privsep_proc *p)
 96 8a35f56c 2022-07-16 thomas {
 97 8a35f56c 2022-07-16 thomas 	proc_run(ps, p, procs, nitems(procs), sockets_run, NULL);
 98 8a35f56c 2022-07-16 thomas }
 99 8a35f56c 2022-07-16 thomas 
100 1f6ec068 2022-08-27 thomas static void
101 8a35f56c 2022-07-16 thomas sockets_run(struct privsep *ps, struct privsep_proc *p, void *arg)
102 8a35f56c 2022-07-16 thomas {
103 8a35f56c 2022-07-16 thomas 	if (config_init(ps->ps_env) == -1)
104 8a35f56c 2022-07-16 thomas 		fatal("failed to initialize configuration");
105 8a35f56c 2022-07-16 thomas 
106 8a35f56c 2022-07-16 thomas 	p->p_shutdown = sockets_shutdown;
107 8a35f56c 2022-07-16 thomas 
108 8a35f56c 2022-07-16 thomas 	sockets_rlimit(-1);
109 8a35f56c 2022-07-16 thomas 
110 8a35f56c 2022-07-16 thomas 	signal_del(&ps->ps_evsigchld);
111 8a35f56c 2022-07-16 thomas 	signal_set(&ps->ps_evsigchld, SIGCHLD, sockets_sighdlr, ps);
112 8a35f56c 2022-07-16 thomas 	signal_add(&ps->ps_evsigchld, NULL);
113 8a35f56c 2022-07-16 thomas 
114 8a35f56c 2022-07-16 thomas #ifndef PROFILE
115 8a35f56c 2022-07-16 thomas 	if (pledge("stdio rpath wpath cpath inet recvfd proc exec sendfd",
116 8a35f56c 2022-07-16 thomas 	    NULL) == -1)
117 8a35f56c 2022-07-16 thomas 		fatal("pledge");
118 8a35f56c 2022-07-16 thomas #endif
119 8a35f56c 2022-07-16 thomas }
120 8a35f56c 2022-07-16 thomas 
121 8a35f56c 2022-07-16 thomas void
122 8a35f56c 2022-07-16 thomas sockets_parse_sockets(struct gotwebd *env)
123 8a35f56c 2022-07-16 thomas {
124 8a35f56c 2022-07-16 thomas 	struct server *srv;
125 9d7714e3 2022-08-27 thomas 	struct address *a;
126 720c2b05 2022-08-16 thomas 	struct socket *new_sock = NULL;
127 9d7714e3 2022-08-27 thomas 	int sock_id = 1;
128 8a35f56c 2022-07-16 thomas 
129 90d63d47 2022-08-16 thomas 	TAILQ_FOREACH(srv, &env->servers, entry) {
130 8a35f56c 2022-07-16 thomas 		if (srv->unix_socket) {
131 9d7714e3 2022-08-27 thomas 			new_sock = sockets_conf_new_socket_unix(env, srv,
132 9d7714e3 2022-08-27 thomas 			    sock_id);
133 720c2b05 2022-08-16 thomas 			if (new_sock) {
134 9d7714e3 2022-08-27 thomas 				sock_id++;
135 720c2b05 2022-08-16 thomas 				TAILQ_INSERT_TAIL(&env->sockets, new_sock,
136 720c2b05 2022-08-16 thomas 				    entry);
137 8a35f56c 2022-07-16 thomas 			}
138 9d7714e3 2022-08-27 thomas 		}
139 8a35f56c 2022-07-16 thomas 
140 9d7714e3 2022-08-27 thomas 		if (srv->fcgi_socket) {
141 9d7714e3 2022-08-27 thomas 			if (TAILQ_EMPTY(&srv->al)) {
142 9d7714e3 2022-08-27 thomas 				fatalx("%s: server %s has no IP addresses to "
143 9d7714e3 2022-08-27 thomas 				    "listen for FCGI connections", __func__,
144 9d7714e3 2022-08-27 thomas 				    srv->name);
145 720c2b05 2022-08-16 thomas 			}
146 9d7714e3 2022-08-27 thomas 			TAILQ_FOREACH(a, &srv->al, entry) {
147 9d7714e3 2022-08-27 thomas 				if (a->ss.ss_family != AF_INET &&
148 9d7714e3 2022-08-27 thomas 				    a->ss.ss_family != AF_INET6)
149 9d7714e3 2022-08-27 thomas 					continue;
150 9d7714e3 2022-08-27 thomas 				new_sock = sockets_conf_new_socket_fcgi(env,
151 9d7714e3 2022-08-27 thomas 				    srv, sock_id, a);
152 9d7714e3 2022-08-27 thomas 				if (new_sock) {
153 9d7714e3 2022-08-27 thomas 					sock_id++;
154 9d7714e3 2022-08-27 thomas 					TAILQ_INSERT_TAIL(&env->sockets,
155 9d7714e3 2022-08-27 thomas 					    new_sock, entry);
156 9d7714e3 2022-08-27 thomas 				}
157 8a35f56c 2022-07-16 thomas 			}
158 8a35f56c 2022-07-16 thomas 		}
159 8a35f56c 2022-07-16 thomas 	}
160 8a35f56c 2022-07-16 thomas }
161 8a35f56c 2022-07-16 thomas 
162 1f6ec068 2022-08-27 thomas static struct socket *
163 9d7714e3 2022-08-27 thomas sockets_conf_new_socket_unix(struct gotwebd *env, struct server *srv, int id)
164 8a35f56c 2022-07-16 thomas {
165 8a35f56c 2022-07-16 thomas 	struct socket *sock;
166 8a35f56c 2022-07-16 thomas 	int n;
167 8a35f56c 2022-07-16 thomas 
168 8a35f56c 2022-07-16 thomas 	if ((sock = calloc(1, sizeof(*sock))) == NULL)
169 8a35f56c 2022-07-16 thomas 		fatalx("%s: calloc", __func__);
170 8a35f56c 2022-07-16 thomas 
171 8a35f56c 2022-07-16 thomas 	sock->conf.id = id;
172 8a35f56c 2022-07-16 thomas 	sock->fd = -1;
173 9d7714e3 2022-08-27 thomas 	sock->conf.af_type = AF_UNIX;
174 8a35f56c 2022-07-16 thomas 
175 9d7714e3 2022-08-27 thomas 	if (strlcpy(sock->conf.unix_socket_name,
176 9d7714e3 2022-08-27 thomas 	    srv->unix_socket_name,
177 9d7714e3 2022-08-27 thomas 	    sizeof(sock->conf.unix_socket_name)) >=
178 9d7714e3 2022-08-27 thomas 	    sizeof(sock->conf.unix_socket_name)) {
179 9d7714e3 2022-08-27 thomas 		free(sock);
180 9d7714e3 2022-08-27 thomas 		fatalx("%s: strlcpy", __func__);
181 720c2b05 2022-08-16 thomas 	}
182 8a35f56c 2022-07-16 thomas 
183 8a35f56c 2022-07-16 thomas 	n = snprintf(sock->conf.name, GOTWEBD_MAXTEXT, "%s_parent",
184 8a35f56c 2022-07-16 thomas 	    srv->name);
185 717a78d4 2022-08-16 thomas 	if (n < 0 || (size_t)n >= GOTWEBD_MAXTEXT) {
186 8a35f56c 2022-07-16 thomas 		free(sock);
187 8a35f56c 2022-07-16 thomas 		fatalx("%s: snprintf", __func__);
188 8a35f56c 2022-07-16 thomas 	}
189 8a35f56c 2022-07-16 thomas 
190 8a35f56c 2022-07-16 thomas 	if (strlcpy(sock->conf.srv_name, srv->name,
191 8a35f56c 2022-07-16 thomas 	    sizeof(sock->conf.srv_name)) >= sizeof(sock->conf.srv_name)) {
192 8a35f56c 2022-07-16 thomas 		free(sock);
193 8a35f56c 2022-07-16 thomas 		fatalx("%s: strlcpy", __func__);
194 8a35f56c 2022-07-16 thomas 	}
195 8a35f56c 2022-07-16 thomas 
196 9d7714e3 2022-08-27 thomas 	return sock;
197 9d7714e3 2022-08-27 thomas }
198 720c2b05 2022-08-16 thomas 
199 1f6ec068 2022-08-27 thomas static struct socket *
200 9d7714e3 2022-08-27 thomas sockets_conf_new_socket_fcgi(struct gotwebd *env, struct server *srv, int id,
201 9d7714e3 2022-08-27 thomas     struct address *a)
202 9d7714e3 2022-08-27 thomas {
203 9d7714e3 2022-08-27 thomas 	struct socket *sock;
204 9d7714e3 2022-08-27 thomas 	struct address *acp;
205 9d7714e3 2022-08-27 thomas 	int n;
206 8a35f56c 2022-07-16 thomas 
207 9d7714e3 2022-08-27 thomas 	if ((sock = calloc(1, sizeof(*sock))) == NULL)
208 9d7714e3 2022-08-27 thomas 		fatalx("%s: calloc", __func__);
209 720c2b05 2022-08-16 thomas 
210 9d7714e3 2022-08-27 thomas 	sock->conf.id = id;
211 9d7714e3 2022-08-27 thomas 	sock->fd = -1;
212 9d7714e3 2022-08-27 thomas 	sock->conf.af_type = a->ss.ss_family;
213 9d7714e3 2022-08-27 thomas 
214 e4c7e0b0 2022-08-30 thomas 	sock->conf.fcgi_socket_port = a->port;
215 9d7714e3 2022-08-27 thomas 
216 9d7714e3 2022-08-27 thomas 	n = snprintf(sock->conf.name, GOTWEBD_MAXTEXT, "%s_parent",
217 9d7714e3 2022-08-27 thomas 	    srv->name);
218 9d7714e3 2022-08-27 thomas 	if (n < 0 || (size_t)n >= GOTWEBD_MAXTEXT) {
219 720c2b05 2022-08-16 thomas 		free(sock);
220 9d7714e3 2022-08-27 thomas 		fatalx("%s: snprintf", __func__);
221 9d7714e3 2022-08-27 thomas 	}
222 9d7714e3 2022-08-27 thomas 
223 9d7714e3 2022-08-27 thomas 	if (strlcpy(sock->conf.srv_name, srv->name,
224 9d7714e3 2022-08-27 thomas 	    sizeof(sock->conf.srv_name)) >= sizeof(sock->conf.srv_name)) {
225 9d7714e3 2022-08-27 thomas 		free(sock);
226 9d7714e3 2022-08-27 thomas 		fatalx("%s: strlcpy", __func__);
227 9d7714e3 2022-08-27 thomas 	}
228 9d7714e3 2022-08-27 thomas 
229 9d7714e3 2022-08-27 thomas 	acp = &sock->conf.addr;
230 9d7714e3 2022-08-27 thomas 
231 9d7714e3 2022-08-27 thomas 	memcpy(&acp->ss, &a->ss, sizeof(acp->ss));
232 9d7714e3 2022-08-27 thomas 	acp->ipproto = a->ipproto;
233 9d7714e3 2022-08-27 thomas 	acp->prefixlen = a->prefixlen;
234 9d7714e3 2022-08-27 thomas 	acp->port = a->port;
235 9d7714e3 2022-08-27 thomas 	if (strlen(a->ifname) != 0) {
236 9d7714e3 2022-08-27 thomas 		if (strlcpy(acp->ifname, a->ifname,
237 9d7714e3 2022-08-27 thomas 		    sizeof(acp->ifname)) >= sizeof(acp->ifname)) {
238 9d7714e3 2022-08-27 thomas 			fatalx("%s: interface name truncated",
239 9d7714e3 2022-08-27 thomas 			    __func__);
240 9d7714e3 2022-08-27 thomas 		}
241 720c2b05 2022-08-16 thomas 	}
242 720c2b05 2022-08-16 thomas 
243 8a35f56c 2022-07-16 thomas 	return (sock);
244 8a35f56c 2022-07-16 thomas }
245 8a35f56c 2022-07-16 thomas 
246 1f6ec068 2022-08-27 thomas static void
247 8a35f56c 2022-07-16 thomas sockets_launch(void)
248 8a35f56c 2022-07-16 thomas {
249 8a35f56c 2022-07-16 thomas 	struct socket *sock;
250 8a35f56c 2022-07-16 thomas 
251 90d63d47 2022-08-16 thomas 	TAILQ_FOREACH(sock, &gotwebd_env->sockets, entry) {
252 8a35f56c 2022-07-16 thomas 		log_debug("%s: configuring socket %d (%d)", __func__,
253 8a35f56c 2022-07-16 thomas 		    sock->conf.id, sock->fd);
254 8a35f56c 2022-07-16 thomas 
255 8a35f56c 2022-07-16 thomas 		event_set(&sock->ev, sock->fd, EV_READ | EV_PERSIST,
256 8a35f56c 2022-07-16 thomas 		    sockets_socket_accept, sock);
257 8a35f56c 2022-07-16 thomas 
258 8a35f56c 2022-07-16 thomas 		if (event_add(&sock->ev, NULL))
259 8a35f56c 2022-07-16 thomas 			fatalx("event add sock");
260 8a35f56c 2022-07-16 thomas 
261 8a35f56c 2022-07-16 thomas 		evtimer_set(&sock->pause, sockets_accept_paused, sock);
262 8a35f56c 2022-07-16 thomas 
263 8a35f56c 2022-07-16 thomas 		log_debug("%s: running socket listener %d", __func__,
264 8a35f56c 2022-07-16 thomas 		    sock->conf.id);
265 8a35f56c 2022-07-16 thomas 	}
266 8a35f56c 2022-07-16 thomas }
267 8a35f56c 2022-07-16 thomas 
268 1f6ec068 2022-08-27 thomas static void
269 8a35f56c 2022-07-16 thomas sockets_purge(struct gotwebd *env)
270 8a35f56c 2022-07-16 thomas {
271 8a35f56c 2022-07-16 thomas 	struct socket *sock, *tsock;
272 8a35f56c 2022-07-16 thomas 
273 8a35f56c 2022-07-16 thomas 	/* shutdown and remove sockets */
274 90d63d47 2022-08-16 thomas 	TAILQ_FOREACH_SAFE(sock, &env->sockets, entry, tsock) {
275 8a35f56c 2022-07-16 thomas 		if (event_initialized(&sock->ev))
276 8a35f56c 2022-07-16 thomas 			event_del(&sock->ev);
277 8a35f56c 2022-07-16 thomas 		if (evtimer_initialized(&sock->evt))
278 8a35f56c 2022-07-16 thomas 			evtimer_del(&sock->evt);
279 8a35f56c 2022-07-16 thomas 		if (evtimer_initialized(&sock->pause))
280 8a35f56c 2022-07-16 thomas 			evtimer_del(&sock->pause);
281 8a35f56c 2022-07-16 thomas 		if (sock->fd != -1)
282 8a35f56c 2022-07-16 thomas 			close(sock->fd);
283 90d63d47 2022-08-16 thomas 		TAILQ_REMOVE(&env->sockets, sock, entry);
284 8a35f56c 2022-07-16 thomas 	}
285 8a35f56c 2022-07-16 thomas }
286 8a35f56c 2022-07-16 thomas 
287 1f6ec068 2022-08-27 thomas static int
288 8a35f56c 2022-07-16 thomas sockets_dispatch_gotwebd(int fd, struct privsep_proc *p, struct imsg *imsg)
289 8a35f56c 2022-07-16 thomas {
290 8a35f56c 2022-07-16 thomas 	struct privsep *ps = p->p_ps;
291 8a35f56c 2022-07-16 thomas 	int res = 0, cmd = 0, verbose;
292 8a35f56c 2022-07-16 thomas 
293 8a35f56c 2022-07-16 thomas 	switch (imsg->hdr.type) {
294 8a35f56c 2022-07-16 thomas 	case IMSG_CFG_SRV:
295 8a35f56c 2022-07-16 thomas 		config_getserver(gotwebd_env, imsg);
296 8a35f56c 2022-07-16 thomas 		break;
297 8a35f56c 2022-07-16 thomas 	case IMSG_CFG_SOCK:
298 8a35f56c 2022-07-16 thomas 		config_getsock(gotwebd_env, imsg);
299 8a35f56c 2022-07-16 thomas 		break;
300 8a35f56c 2022-07-16 thomas 	case IMSG_CFG_FD:
301 8a35f56c 2022-07-16 thomas 		config_getfd(gotwebd_env, imsg);
302 8a35f56c 2022-07-16 thomas 		break;
303 8a35f56c 2022-07-16 thomas 	case IMSG_CFG_DONE:
304 8a35f56c 2022-07-16 thomas 		config_getcfg(gotwebd_env, imsg);
305 8a35f56c 2022-07-16 thomas 		break;
306 8a35f56c 2022-07-16 thomas 	case IMSG_CTL_START:
307 8a35f56c 2022-07-16 thomas 		sockets_launch();
308 8a35f56c 2022-07-16 thomas 		break;
309 8a35f56c 2022-07-16 thomas 	case IMSG_CTL_VERBOSE:
310 8a35f56c 2022-07-16 thomas 		IMSG_SIZE_CHECK(imsg, &verbose);
311 8a35f56c 2022-07-16 thomas 		memcpy(&verbose, imsg->data, sizeof(verbose));
312 8a35f56c 2022-07-16 thomas 		log_setverbose(verbose);
313 8a35f56c 2022-07-16 thomas 		break;
314 8a35f56c 2022-07-16 thomas 	default:
315 8a35f56c 2022-07-16 thomas 		return -1;
316 8a35f56c 2022-07-16 thomas 	}
317 8a35f56c 2022-07-16 thomas 
318 8a35f56c 2022-07-16 thomas 	switch (cmd) {
319 8a35f56c 2022-07-16 thomas 	case 0:
320 8a35f56c 2022-07-16 thomas 		break;
321 8a35f56c 2022-07-16 thomas 	default:
322 8a35f56c 2022-07-16 thomas 		if (proc_compose_imsg(ps, PROC_GOTWEBD, -1, cmd,
323 8a35f56c 2022-07-16 thomas 		    imsg->hdr.peerid, -1, &res, sizeof(res)) == -1)
324 8a35f56c 2022-07-16 thomas 			return -1;
325 8a35f56c 2022-07-16 thomas 		break;
326 8a35f56c 2022-07-16 thomas 	}
327 8a35f56c 2022-07-16 thomas 
328 8a35f56c 2022-07-16 thomas 	return 0;
329 8a35f56c 2022-07-16 thomas }
330 8a35f56c 2022-07-16 thomas 
331 1f6ec068 2022-08-27 thomas static void
332 8a35f56c 2022-07-16 thomas sockets_sighdlr(int sig, short event, void *arg)
333 8a35f56c 2022-07-16 thomas {
334 8a35f56c 2022-07-16 thomas 	switch (sig) {
335 8a35f56c 2022-07-16 thomas 	case SIGHUP:
336 8a35f56c 2022-07-16 thomas 		log_info("%s: ignoring SIGHUP", __func__);
337 8a35f56c 2022-07-16 thomas 		break;
338 8a35f56c 2022-07-16 thomas 	case SIGPIPE:
339 8a35f56c 2022-07-16 thomas 		log_info("%s: ignoring SIGPIPE", __func__);
340 8a35f56c 2022-07-16 thomas 		break;
341 8a35f56c 2022-07-16 thomas 	case SIGUSR1:
342 8a35f56c 2022-07-16 thomas 		log_info("%s: ignoring SIGUSR1", __func__);
343 8a35f56c 2022-07-16 thomas 		break;
344 8a35f56c 2022-07-16 thomas 	case SIGCHLD:
345 8a35f56c 2022-07-16 thomas 		break;
346 8a35f56c 2022-07-16 thomas 	default:
347 8a35f56c 2022-07-16 thomas 		log_info("SIGNAL: %d", sig);
348 8a35f56c 2022-07-16 thomas 		fatalx("unexpected signal");
349 8a35f56c 2022-07-16 thomas 	}
350 8a35f56c 2022-07-16 thomas }
351 8a35f56c 2022-07-16 thomas 
352 8a35f56c 2022-07-16 thomas void
353 8a35f56c 2022-07-16 thomas sockets_shutdown(void)
354 8a35f56c 2022-07-16 thomas {
355 8a35f56c 2022-07-16 thomas 	struct server *srv, *tsrv;
356 8a35f56c 2022-07-16 thomas 	struct socket *sock, *tsock;
357 55e6cffd 2022-09-01 thomas 	int i;
358 8a35f56c 2022-07-16 thomas 
359 8a35f56c 2022-07-16 thomas 	sockets_purge(gotwebd_env);
360 8a35f56c 2022-07-16 thomas 
361 8a35f56c 2022-07-16 thomas 	/* clean sockets */
362 90d63d47 2022-08-16 thomas 	TAILQ_FOREACH_SAFE(sock, &gotwebd_env->sockets, entry, tsock) {
363 90d63d47 2022-08-16 thomas 		TAILQ_REMOVE(&gotwebd_env->sockets, sock, entry);
364 8a35f56c 2022-07-16 thomas 		close(sock->fd);
365 8a35f56c 2022-07-16 thomas 		free(sock);
366 8a35f56c 2022-07-16 thomas 	}
367 8a35f56c 2022-07-16 thomas 
368 8a35f56c 2022-07-16 thomas 	/* clean servers */
369 55e6cffd 2022-09-01 thomas 	TAILQ_FOREACH_SAFE(srv, &gotwebd_env->servers, entry, tsrv) {
370 55e6cffd 2022-09-01 thomas 		for (i = 0; i < srv->ncached_repos; i++)
371 55e6cffd 2022-09-01 thomas 			got_repo_close(srv->cached_repos[i].repo);
372 8a35f56c 2022-07-16 thomas 		free(srv);
373 55e6cffd 2022-09-01 thomas 	}
374 8a35f56c 2022-07-16 thomas 
375 8a35f56c 2022-07-16 thomas 	free(gotwebd_env);
376 8a35f56c 2022-07-16 thomas }
377 8a35f56c 2022-07-16 thomas 
378 8a35f56c 2022-07-16 thomas int
379 8a35f56c 2022-07-16 thomas sockets_privinit(struct gotwebd *env, struct socket *sock)
380 8a35f56c 2022-07-16 thomas {
381 8a35f56c 2022-07-16 thomas 	struct privsep *ps = env->gotwebd_ps;
382 8a35f56c 2022-07-16 thomas 
383 720c2b05 2022-08-16 thomas 	if (sock->conf.af_type == AF_UNIX) {
384 8a35f56c 2022-07-16 thomas 		log_debug("%s: initializing unix socket %s", __func__,
385 8a35f56c 2022-07-16 thomas 		    sock->conf.unix_socket_name);
386 8a35f56c 2022-07-16 thomas 		sock->fd = sockets_unix_socket_listen(ps, sock);
387 8a35f56c 2022-07-16 thomas 		if (sock->fd == -1) {
388 8a35f56c 2022-07-16 thomas 			log_warnx("%s: create unix socket failed", __func__);
389 8a35f56c 2022-07-16 thomas 			return -1;
390 8a35f56c 2022-07-16 thomas 		}
391 8a35f56c 2022-07-16 thomas 	}
392 8a35f56c 2022-07-16 thomas 
393 720c2b05 2022-08-16 thomas 	if (sock->conf.af_type == AF_INET || sock->conf.af_type == AF_INET6) {
394 720c2b05 2022-08-16 thomas 		log_debug("%s: initializing %s FCGI socket on port %d for %s",
395 720c2b05 2022-08-16 thomas 		    __func__, sock->conf.af_type == AF_INET ? "inet" : "inet6",
396 720c2b05 2022-08-16 thomas 		    sock->conf.fcgi_socket_port, sock->conf.name);
397 9d7714e3 2022-08-27 thomas 		sock->fd = sockets_create_socket(&sock->conf.addr,
398 8a35f56c 2022-07-16 thomas 		    sock->conf.fcgi_socket_port);
399 8a35f56c 2022-07-16 thomas 		if (sock->fd == -1) {
400 9d7714e3 2022-08-27 thomas 			log_warnx("%s: create FCGI socket failed", __func__);
401 8a35f56c 2022-07-16 thomas 			return -1;
402 8a35f56c 2022-07-16 thomas 		}
403 8a35f56c 2022-07-16 thomas 	}
404 8a35f56c 2022-07-16 thomas 
405 8a35f56c 2022-07-16 thomas 	return 0;
406 8a35f56c 2022-07-16 thomas }
407 8a35f56c 2022-07-16 thomas 
408 1f6ec068 2022-08-27 thomas static int
409 8a35f56c 2022-07-16 thomas sockets_unix_socket_listen(struct privsep *ps, struct socket *sock)
410 8a35f56c 2022-07-16 thomas {
411 8a35f56c 2022-07-16 thomas 	struct gotwebd *env = ps->ps_env;
412 8a35f56c 2022-07-16 thomas 	struct sockaddr_un sun;
413 8a35f56c 2022-07-16 thomas 	struct socket *tsock;
414 8a35f56c 2022-07-16 thomas 	int u_fd = -1;
415 8a35f56c 2022-07-16 thomas 	mode_t old_umask, mode;
416 8a35f56c 2022-07-16 thomas 
417 90d63d47 2022-08-16 thomas 	TAILQ_FOREACH(tsock, &env->sockets, entry) {
418 8a35f56c 2022-07-16 thomas 		if (strcmp(tsock->conf.unix_socket_name,
419 8a35f56c 2022-07-16 thomas 		    sock->conf.unix_socket_name) == 0 &&
420 8a35f56c 2022-07-16 thomas 		    tsock->fd != -1)
421 8a35f56c 2022-07-16 thomas 			return (tsock->fd);
422 8a35f56c 2022-07-16 thomas 	}
423 8a35f56c 2022-07-16 thomas 
424 dd7a7d5b 2022-07-16 thomas 	/* TA: FIXME:  this needs upstreaming. */
425 dd7a7d5b 2022-07-16 thomas 	int socket_flags = SOCK_STREAM | SOCK_NONBLOCK;
426 dd7a7d5b 2022-07-16 thomas #ifdef SOCK_CLOEXEC
427 dd7a7d5b 2022-07-16 thomas 	socket_flags |= SOCK_CLOEXEC;
428 dd7a7d5b 2022-07-16 thomas #endif
429 dd7a7d5b 2022-07-16 thomas 	u_fd = socket(AF_UNIX, socket_flags, 0);
430 8a35f56c 2022-07-16 thomas 	if (u_fd == -1) {
431 8a35f56c 2022-07-16 thomas 		log_warn("%s: socket", __func__);
432 8a35f56c 2022-07-16 thomas 		return -1;
433 8a35f56c 2022-07-16 thomas 	}
434 8a35f56c 2022-07-16 thomas 
435 8a35f56c 2022-07-16 thomas 	sun.sun_family = AF_UNIX;
436 8a35f56c 2022-07-16 thomas 	if (strlcpy(sun.sun_path, sock->conf.unix_socket_name,
437 8a35f56c 2022-07-16 thomas 	    sizeof(sun.sun_path)) >= sizeof(sun.sun_path)) {
438 8a35f56c 2022-07-16 thomas 		log_warn("%s: %s name too long", __func__,
439 8a35f56c 2022-07-16 thomas 		    sock->conf.unix_socket_name);
440 8a35f56c 2022-07-16 thomas 		close(u_fd);
441 8a35f56c 2022-07-16 thomas 		return -1;
442 8a35f56c 2022-07-16 thomas 	}
443 8a35f56c 2022-07-16 thomas 
444 8a35f56c 2022-07-16 thomas 	if (unlink(sock->conf.unix_socket_name) == -1) {
445 8a35f56c 2022-07-16 thomas 		if (errno != ENOENT) {
446 8a35f56c 2022-07-16 thomas 			log_warn("%s: unlink %s", __func__,
447 8a35f56c 2022-07-16 thomas 			    sock->conf.unix_socket_name);
448 8a35f56c 2022-07-16 thomas 			close(u_fd);
449 8a35f56c 2022-07-16 thomas 			return -1;
450 8a35f56c 2022-07-16 thomas 		}
451 8a35f56c 2022-07-16 thomas 	}
452 8a35f56c 2022-07-16 thomas 
453 8a35f56c 2022-07-16 thomas 	old_umask = umask(S_IXUSR|S_IXGRP|S_IWOTH|S_IROTH|S_IXOTH);
454 8a35f56c 2022-07-16 thomas 	mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP;
455 8a35f56c 2022-07-16 thomas 
456 8a35f56c 2022-07-16 thomas 	if (bind(u_fd, (struct sockaddr *)&sun, sizeof(sun)) == -1) {
457 8a35f56c 2022-07-16 thomas 		log_warn("%s: bind: %s", __func__, sock->conf.unix_socket_name);
458 8a35f56c 2022-07-16 thomas 		close(u_fd);
459 8a35f56c 2022-07-16 thomas 		(void)umask(old_umask);
460 8a35f56c 2022-07-16 thomas 		return -1;
461 8a35f56c 2022-07-16 thomas 	}
462 8a35f56c 2022-07-16 thomas 
463 8a35f56c 2022-07-16 thomas 	(void)umask(old_umask);
464 8a35f56c 2022-07-16 thomas 
465 8a35f56c 2022-07-16 thomas 	if (chmod(sock->conf.unix_socket_name, mode) == -1) {
466 8a35f56c 2022-07-16 thomas 		log_warn("%s: chmod", __func__);
467 8a35f56c 2022-07-16 thomas 		close(u_fd);
468 8a35f56c 2022-07-16 thomas 		(void)unlink(sock->conf.unix_socket_name);
469 8a35f56c 2022-07-16 thomas 		return -1;
470 8a35f56c 2022-07-16 thomas 	}
471 8a35f56c 2022-07-16 thomas 
472 8a35f56c 2022-07-16 thomas 	if (chown(sock->conf.unix_socket_name, ps->ps_pw->pw_uid,
473 8a35f56c 2022-07-16 thomas 	    ps->ps_pw->pw_gid) == -1) {
474 8a35f56c 2022-07-16 thomas 		log_warn("%s: chown", __func__);
475 8a35f56c 2022-07-16 thomas 		close(u_fd);
476 8a35f56c 2022-07-16 thomas 		(void)unlink(sock->conf.unix_socket_name);
477 8a35f56c 2022-07-16 thomas 		return -1;
478 8a35f56c 2022-07-16 thomas 	}
479 8a35f56c 2022-07-16 thomas 
480 8a35f56c 2022-07-16 thomas 	if (listen(u_fd, SOCKS_BACKLOG) == -1) {
481 8a35f56c 2022-07-16 thomas 		log_warn("%s: listen", __func__);
482 8a35f56c 2022-07-16 thomas 		return -1;
483 8a35f56c 2022-07-16 thomas 	}
484 8a35f56c 2022-07-16 thomas 
485 8a35f56c 2022-07-16 thomas 	return u_fd;
486 8a35f56c 2022-07-16 thomas }
487 8a35f56c 2022-07-16 thomas 
488 1f6ec068 2022-08-27 thomas static int
489 9d7714e3 2022-08-27 thomas sockets_create_socket(struct address *a, in_port_t port)
490 8a35f56c 2022-07-16 thomas {
491 8a35f56c 2022-07-16 thomas 	struct addrinfo hints;
492 8a35f56c 2022-07-16 thomas 	int fd = -1, o_val = 1, flags;
493 8a35f56c 2022-07-16 thomas 
494 8a35f56c 2022-07-16 thomas 	memset(&hints, 0, sizeof(hints));
495 8a35f56c 2022-07-16 thomas 	hints.ai_family = AF_UNSPEC;
496 8a35f56c 2022-07-16 thomas 	hints.ai_socktype = SOCK_STREAM;
497 8a35f56c 2022-07-16 thomas 	hints.ai_flags |= AI_PASSIVE;
498 8a35f56c 2022-07-16 thomas 
499 9d7714e3 2022-08-27 thomas 	switch (a->ss.ss_family) {
500 9d7714e3 2022-08-27 thomas 	case AF_INET:
501 c19738c9 2022-08-27 thomas 		((struct sockaddr_in *)(&a->ss))->sin_port = htons(port);
502 9d7714e3 2022-08-27 thomas 		break;
503 9d7714e3 2022-08-27 thomas 	case AF_INET6:
504 c19738c9 2022-08-27 thomas 		((struct sockaddr_in6 *)(&a->ss))->sin6_port = htons(port);
505 9d7714e3 2022-08-27 thomas 		break;
506 9d7714e3 2022-08-27 thomas 	default:
507 9d7714e3 2022-08-27 thomas 		log_warnx("%s: unknown address family", __func__);
508 9d7714e3 2022-08-27 thomas 		return -1;
509 9d7714e3 2022-08-27 thomas 	}
510 8a35f56c 2022-07-16 thomas 
511 9d7714e3 2022-08-27 thomas 	fd = socket(a->ss.ss_family, hints.ai_socktype, a->ipproto);
512 9d7714e3 2022-08-27 thomas 	if (fd == -1)
513 9d7714e3 2022-08-27 thomas 		return -1;
514 8a35f56c 2022-07-16 thomas 
515 9d7714e3 2022-08-27 thomas 	log_debug("%s: opened socket (%d) for %s", __func__,
516 9d7714e3 2022-08-27 thomas 	    fd, a->ifname);
517 8a35f56c 2022-07-16 thomas 
518 9d7714e3 2022-08-27 thomas 	if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &o_val,
519 9d7714e3 2022-08-27 thomas 	    sizeof(int)) == -1) {
520 9d7714e3 2022-08-27 thomas 		log_warn("%s: setsockopt error", __func__);
521 9d7714e3 2022-08-27 thomas 		close(fd);
522 9d7714e3 2022-08-27 thomas 		return -1;
523 9d7714e3 2022-08-27 thomas 	}
524 8a35f56c 2022-07-16 thomas 
525 9d7714e3 2022-08-27 thomas 	/* non-blocking */
526 9d7714e3 2022-08-27 thomas 	flags = fcntl(fd, F_GETFL);
527 9d7714e3 2022-08-27 thomas 	flags |= O_NONBLOCK;
528 9d7714e3 2022-08-27 thomas 	if (fcntl(fd, F_SETFL, flags) == -1) {
529 9d7714e3 2022-08-27 thomas 		log_info("%s: could not enable non-blocking I/O", __func__);
530 9d7714e3 2022-08-27 thomas 		close(fd);
531 9d7714e3 2022-08-27 thomas 		return -1;
532 9d7714e3 2022-08-27 thomas 	}
533 8a35f56c 2022-07-16 thomas 
534 75716fd6 2022-08-27 thomas 	if (bind(fd, (struct sockaddr *)&a->ss, SS_LEN(&a->ss)) == -1) {
535 9d7714e3 2022-08-27 thomas 		close(fd);
536 9d7714e3 2022-08-27 thomas 		log_info("%s: can't bind to port %d", __func__,
537 9d7714e3 2022-08-27 thomas 		    ntohs(port));
538 9d7714e3 2022-08-27 thomas 		return -1;
539 8a35f56c 2022-07-16 thomas 	}
540 8a35f56c 2022-07-16 thomas 
541 9d7714e3 2022-08-27 thomas 	if (listen(fd, SOMAXCONN) == -1) {
542 9d7714e3 2022-08-27 thomas 		log_warn("%s, unable to listen on socket", __func__);
543 9d7714e3 2022-08-27 thomas 		close(fd);
544 9d7714e3 2022-08-27 thomas 		return -1;
545 9d7714e3 2022-08-27 thomas 	}
546 9d7714e3 2022-08-27 thomas 
547 8a35f56c 2022-07-16 thomas 	return (fd);
548 8a35f56c 2022-07-16 thomas }
549 8a35f56c 2022-07-16 thomas 
550 1f6ec068 2022-08-27 thomas static int
551 8a35f56c 2022-07-16 thomas sockets_accept_reserve(int sockfd, struct sockaddr *addr, socklen_t *addrlen,
552 8a35f56c 2022-07-16 thomas     int reserve, volatile int *counter)
553 8a35f56c 2022-07-16 thomas {
554 8a35f56c 2022-07-16 thomas 	int ret;
555 8a35f56c 2022-07-16 thomas 
556 8a35f56c 2022-07-16 thomas 	if (getdtablecount() + reserve +
557 8a35f56c 2022-07-16 thomas 	    ((*counter + 1) * FD_NEEDED) >= getdtablesize()) {
558 8a35f56c 2022-07-16 thomas 		log_debug("inflight fds exceeded");
559 8a35f56c 2022-07-16 thomas 		errno = EMFILE;
560 8a35f56c 2022-07-16 thomas 		return -1;
561 8a35f56c 2022-07-16 thomas 	}
562 5ae43732 2022-07-16 thomas /* TA:  This needs fixing upstream. */
563 5ae43732 2022-07-16 thomas #ifdef __APPLE__
564 5ae43732 2022-07-16 thomas 	ret = accept(sockfd, addr, addrlen);
565 5ae43732 2022-07-16 thomas #else
566 5ae43732 2022-07-16 thomas 	ret = accept4(sockfd, addr, addrlen, SOCK_NONBLOCK | SOCK_CLOEXEC);
567 5ae43732 2022-07-16 thomas #endif
568 8a35f56c 2022-07-16 thomas 
569 5ae43732 2022-07-16 thomas 	if (ret > -1) {
570 8a35f56c 2022-07-16 thomas 		(*counter)++;
571 8a35f56c 2022-07-16 thomas 		log_debug("inflight incremented, now %d", *counter);
572 8a35f56c 2022-07-16 thomas 	}
573 8a35f56c 2022-07-16 thomas 
574 8a35f56c 2022-07-16 thomas 	return ret;
575 8a35f56c 2022-07-16 thomas }
576 8a35f56c 2022-07-16 thomas 
577 1f6ec068 2022-08-27 thomas static void
578 8a35f56c 2022-07-16 thomas sockets_accept_paused(int fd, short events, void *arg)
579 8a35f56c 2022-07-16 thomas {
580 8a35f56c 2022-07-16 thomas 	struct socket *sock = (struct socket *)arg;
581 8a35f56c 2022-07-16 thomas 
582 8a35f56c 2022-07-16 thomas 	event_add(&sock->ev, NULL);
583 8a35f56c 2022-07-16 thomas }
584 8a35f56c 2022-07-16 thomas 
585 8a35f56c 2022-07-16 thomas void
586 8a35f56c 2022-07-16 thomas sockets_socket_accept(int fd, short event, void *arg)
587 8a35f56c 2022-07-16 thomas {
588 8a35f56c 2022-07-16 thomas 	struct socket *sock = (struct socket *)arg;
589 8a35f56c 2022-07-16 thomas 	struct sockaddr_storage ss;
590 8a35f56c 2022-07-16 thomas 	struct timeval backoff;
591 8a35f56c 2022-07-16 thomas 	struct request *c = NULL;
592 8a35f56c 2022-07-16 thomas 	socklen_t len;
593 8a35f56c 2022-07-16 thomas 	int s;
594 8a35f56c 2022-07-16 thomas 
595 8a35f56c 2022-07-16 thomas 	backoff.tv_sec = 1;
596 8a35f56c 2022-07-16 thomas 	backoff.tv_usec = 0;
597 8a35f56c 2022-07-16 thomas 
598 8a35f56c 2022-07-16 thomas 	event_add(&sock->ev, NULL);
599 8a35f56c 2022-07-16 thomas 	if (event & EV_TIMEOUT)
600 8a35f56c 2022-07-16 thomas 		return;
601 8a35f56c 2022-07-16 thomas 
602 8a35f56c 2022-07-16 thomas 	len = sizeof(ss);
603 8a35f56c 2022-07-16 thomas 
604 8a35f56c 2022-07-16 thomas 	s = sockets_accept_reserve(fd, (struct sockaddr *)&ss, &len,
605 8a35f56c 2022-07-16 thomas 	    FD_RESERVE, &cgi_inflight);
606 8a35f56c 2022-07-16 thomas 
607 8a35f56c 2022-07-16 thomas 	if (s == -1) {
608 8a35f56c 2022-07-16 thomas 		switch (errno) {
609 8a35f56c 2022-07-16 thomas 		case EINTR:
610 8a35f56c 2022-07-16 thomas 		case EWOULDBLOCK:
611 8a35f56c 2022-07-16 thomas 		case ECONNABORTED:
612 8a35f56c 2022-07-16 thomas 			return;
613 8a35f56c 2022-07-16 thomas 		case EMFILE:
614 8a35f56c 2022-07-16 thomas 		case ENFILE:
615 8a35f56c 2022-07-16 thomas 			event_del(&sock->ev);
616 8a35f56c 2022-07-16 thomas 			evtimer_add(&sock->pause, &backoff);
617 8a35f56c 2022-07-16 thomas 			return;
618 8a35f56c 2022-07-16 thomas 		default:
619 8a35f56c 2022-07-16 thomas 			log_warn("%s: accept", __func__);
620 8a35f56c 2022-07-16 thomas 		}
621 8a35f56c 2022-07-16 thomas 	}
622 8a35f56c 2022-07-16 thomas 
623 8a35f56c 2022-07-16 thomas 	if (client_cnt > GOTWEBD_MAXCLIENTS)
624 8a35f56c 2022-07-16 thomas 		goto err;
625 8a35f56c 2022-07-16 thomas 
626 8a35f56c 2022-07-16 thomas 	c = calloc(1, sizeof(struct request));
627 8a35f56c 2022-07-16 thomas 	if (c == NULL) {
628 e7e5fa49 2022-12-30 thomas 		log_warn("%s", __func__);
629 e7e5fa49 2022-12-30 thomas 		close(s);
630 e7e5fa49 2022-12-30 thomas 		cgi_inflight--;
631 e7e5fa49 2022-12-30 thomas 		return;
632 e7e5fa49 2022-12-30 thomas 	}
633 e7e5fa49 2022-12-30 thomas 
634 e7e5fa49 2022-12-30 thomas 	c->tp = template(c, fcgi_puts, fcgi_putc);
635 e7e5fa49 2022-12-30 thomas 	if (c->tp == NULL) {
636 8a35f56c 2022-07-16 thomas 		log_warn("%s", __func__);
637 8a35f56c 2022-07-16 thomas 		close(s);
638 8a35f56c 2022-07-16 thomas 		cgi_inflight--;
639 e7e5fa49 2022-12-30 thomas 		free(c);
640 8a35f56c 2022-07-16 thomas 		return;
641 8a35f56c 2022-07-16 thomas 	}
642 8a35f56c 2022-07-16 thomas 
643 8a35f56c 2022-07-16 thomas 	c->fd = s;
644 8a35f56c 2022-07-16 thomas 	c->sock = sock;
645 8a35f56c 2022-07-16 thomas 	memcpy(c->priv_fd, sock->priv_fd, sizeof(c->priv_fd));
646 8a35f56c 2022-07-16 thomas 	c->buf_pos = 0;
647 8a35f56c 2022-07-16 thomas 	c->buf_len = 0;
648 8a35f56c 2022-07-16 thomas 	c->request_started = 0;
649 8a35f56c 2022-07-16 thomas 	c->sock->client_status = CLIENT_CONNECT;
650 8a35f56c 2022-07-16 thomas 
651 2e9bd5cb 2023-03-10 thomas 	event_set(&c->ev, s, EV_READ|EV_PERSIST, fcgi_request, c);
652 8a35f56c 2022-07-16 thomas 	event_add(&c->ev, NULL);
653 8a35f56c 2022-07-16 thomas 
654 8a35f56c 2022-07-16 thomas 	evtimer_set(&c->tmo, fcgi_timeout, c);
655 8a35f56c 2022-07-16 thomas 	evtimer_add(&c->tmo, &timeout);
656 8a35f56c 2022-07-16 thomas 
657 8a35f56c 2022-07-16 thomas 	client_cnt++;
658 8a35f56c 2022-07-16 thomas 
659 8a35f56c 2022-07-16 thomas 	return;
660 8a35f56c 2022-07-16 thomas err:
661 8a35f56c 2022-07-16 thomas 	cgi_inflight--;
662 8a35f56c 2022-07-16 thomas 	close(s);
663 8a35f56c 2022-07-16 thomas 	if (c != NULL)
664 8a35f56c 2022-07-16 thomas 		free(c);
665 8a35f56c 2022-07-16 thomas }
666 8a35f56c 2022-07-16 thomas 
667 1f6ec068 2022-08-27 thomas static void
668 8a35f56c 2022-07-16 thomas sockets_rlimit(int maxfd)
669 8a35f56c 2022-07-16 thomas {
670 8a35f56c 2022-07-16 thomas 	struct rlimit rl;
671 8a35f56c 2022-07-16 thomas 
672 8a35f56c 2022-07-16 thomas 	if (getrlimit(RLIMIT_NOFILE, &rl) == -1)
673 8a35f56c 2022-07-16 thomas 		fatal("%s: failed to get resource limit", __func__);
674 ceac46c9 2022-07-17 thomas 	log_debug("%s: max open files %llu", __func__,
675 ceac46c9 2022-07-17 thomas 	    (unsigned long long)rl.rlim_max);
676 8a35f56c 2022-07-16 thomas 
677 8a35f56c 2022-07-16 thomas 	/*
678 8a35f56c 2022-07-16 thomas 	 * Allow the maximum number of open file descriptors for this
679 8a35f56c 2022-07-16 thomas 	 * login class (which should be the class "daemon" by default).
680 8a35f56c 2022-07-16 thomas 	 */
681 8a35f56c 2022-07-16 thomas 	if (maxfd == -1)
682 8a35f56c 2022-07-16 thomas 		rl.rlim_cur = rl.rlim_max;
683 8a35f56c 2022-07-16 thomas 	else
684 8a35f56c 2022-07-16 thomas 		rl.rlim_cur = MAXIMUM(rl.rlim_max, (rlim_t)maxfd);
685 8a35f56c 2022-07-16 thomas 	if (setrlimit(RLIMIT_NOFILE, &rl) == -1)
686 8a35f56c 2022-07-16 thomas 		fatal("%s: failed to set resource limit", __func__);
687 ff36aeea 2022-07-16 thomas }