1 3e4749f7 2020-10-02 op /*
  2 a555e0d6 2022-07-04 op  * Copyright (c) 2020, 2021, 2022 Omar Polo <op@omarpolo.com>
  3 3e4749f7 2020-10-02 op  *
  4 3e4749f7 2020-10-02 op  * Permission to use, copy, modify, and distribute this software for any
  5 3e4749f7 2020-10-02 op  * purpose with or without fee is hereby granted, provided that the above
  6 3e4749f7 2020-10-02 op  * copyright notice and this permission notice appear in all copies.
  7 3e4749f7 2020-10-02 op  *
  8 3e4749f7 2020-10-02 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 3e4749f7 2020-10-02 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 3e4749f7 2020-10-02 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 3e4749f7 2020-10-02 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 3e4749f7 2020-10-02 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 3e4749f7 2020-10-02 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 3e4749f7 2020-10-02 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 3e4749f7 2020-10-02 op  */
 16 52418c8d 2021-02-12 op 
 17 52418c8d 2021-02-12 op #include "gmid.h"
 18 3e4749f7 2020-10-02 op 
 19 8443bff7 2021-01-25 op #include <sys/stat.h>
 20 8443bff7 2021-01-25 op 
 21 592fd624 2020-10-07 op #include <errno.h>
 22 3e4749f7 2020-10-02 op #include <fcntl.h>
 23 5777923b 2021-06-29 op #include <getopt.h>
 24 0046c1fe 2023-06-06 op #include <locale.h>
 25 7e1df73d 2021-03-31 op #include <libgen.h>
 26 bcf5d929 2021-02-01 op #include <limits.h>
 27 c9e97a6e 2022-12-24 op #include <grp.h>
 28 ae08ec7d 2021-01-25 op #include <pwd.h>
 29 0cf902af 2020-11-03 op #include <signal.h>
 30 3e4749f7 2020-10-02 op #include <string.h>
 31 eae52ad4 2023-06-06 op #include <syslog.h>
 32 cc68fe70 2020-10-07 op 
 33 eae52ad4 2023-06-06 op #include "log.h"
 34 c26f2460 2023-06-08 op #include "proc.h"
 35 df5058c9 2023-06-05 op 
 36 c26f2460 2023-06-08 op #ifndef nitems
 37 c26f2460 2023-06-08 op #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
 38 c26f2460 2023-06-08 op #endif
 39 5777923b 2021-06-29 op 
 40 c26f2460 2023-06-08 op static int main_configure(struct conf *);
 41 c26f2460 2023-06-08 op static void main_configure_done(struct conf *);
 42 c26f2460 2023-06-08 op static void main_reload(struct conf *);
 43 c26f2460 2023-06-08 op static void main_sig_handler(int, short, void *);
 44 c26f2460 2023-06-08 op static int main_dispatch_server(int, struct privsep_proc *, struct imsg *);
 45 c26f2460 2023-06-08 op static int main_dispatch_logger(int, struct privsep_proc *, struct imsg *);
 46 c26f2460 2023-06-08 op static void __dead main_shutdown(struct conf *);
 47 c26f2460 2023-06-08 op 
 48 c26f2460 2023-06-08 op static struct privsep_proc procs[] = {
 49 c26f2460 2023-06-08 op 	{ "server",	PROC_SERVER,	main_dispatch_server, server },
 50 c26f2460 2023-06-08 op 	{ "logger",	PROC_LOGGER,	main_dispatch_logger, logger },
 51 c26f2460 2023-06-08 op };
 52 c26f2460 2023-06-08 op 
 53 c26f2460 2023-06-08 op static const char	*opts = "c:D:fI:hnP:T:Vv";
 54 c26f2460 2023-06-08 op 
 55 e5d82d94 2022-03-19 op static const struct option longopts[] = {
 56 5777923b 2021-06-29 op 	{"help",	no_argument,		NULL,	'h'},
 57 5777923b 2021-06-29 op 	{"version",	no_argument,		NULL,	'V'},
 58 5777923b 2021-06-29 op 	{NULL,		0,			NULL,	0},
 59 5777923b 2021-06-29 op };
 60 5777923b 2021-06-29 op 
 61 8ad1c570 2021-05-09 op struct fcgi fcgi[FCGI_MAX];
 62 8ad1c570 2021-05-09 op 
 63 b8e64ccd 2021-03-31 op struct vhosthead hosts;
 64 15902770 2021-01-15 op 
 65 bc99d868 2021-03-19 op int sock4, sock6;
 66 c26f2460 2023-06-08 op int privsep_process;
 67 c26f2460 2023-06-08 op int pidfd = -1;
 68 d672b8fb 2021-02-03 op 
 69 ca84625a 2023-06-08 op int debug, verbose;
 70 ca84625a 2023-06-08 op 
 71 32fbc478 2022-09-08 op const char *config_path = "/etc/gmid.conf";
 72 32fbc478 2022-09-08 op const char *pidfile;
 73 881a9dd9 2021-01-16 op 
 74 15902770 2021-01-15 op struct conf conf;
 75 15902770 2021-01-15 op 
 76 3abf91b0 2021-02-07 op static void
 77 9327bc04 2021-06-29 op usage(void)
 78 3abf91b0 2021-02-07 op {
 79 3abf91b0 2021-02-07 op 	fprintf(stderr,
 80 0be2a537 2021-06-29 op 	    "Version: " GMID_STRING "\n"
 81 0ac785a6 2023-06-05 op 	    "Usage: %s [-fnv] [-c config] [-D macro=value] [-P pidfile]\n",
 82 9327bc04 2021-06-29 op 	    getprogname());
 83 3abf91b0 2021-02-07 op }
 84 3abf91b0 2021-02-07 op 
 85 47b0ff10 2023-06-08 op /* used by the server process, defined here so gg can provide its own impl. */
 86 47b0ff10 2023-06-08 op void
 87 47b0ff10 2023-06-08 op log_request(struct client *c, char *meta, size_t l)
 88 47b0ff10 2023-06-08 op {
 89 47b0ff10 2023-06-08 op 	char hbuf[NI_MAXHOST], sbuf[NI_MAXSERV], b[GEMINI_URL_LEN];
 90 47b0ff10 2023-06-08 op 	char *fmted;
 91 47b0ff10 2023-06-08 op 	const char *t;
 92 47b0ff10 2023-06-08 op 	size_t len;
 93 47b0ff10 2023-06-08 op 	int ec;
 94 47b0ff10 2023-06-08 op 
 95 47b0ff10 2023-06-08 op 	len = sizeof(c->addr);
 96 47b0ff10 2023-06-08 op 	ec = getnameinfo((struct sockaddr*)&c->addr, len,
 97 47b0ff10 2023-06-08 op 	    hbuf, sizeof(hbuf),
 98 47b0ff10 2023-06-08 op 	    sbuf, sizeof(sbuf),
 99 47b0ff10 2023-06-08 op 	    NI_NUMERICHOST | NI_NUMERICSERV);
100 47b0ff10 2023-06-08 op 	if (ec != 0)
101 47b0ff10 2023-06-08 op 		fatalx("getnameinfo: %s", gai_strerror(ec));
102 47b0ff10 2023-06-08 op 
103 47b0ff10 2023-06-08 op 	if (c->iri.schema != NULL) {
104 47b0ff10 2023-06-08 op 		/* serialize the IRI */
105 47b0ff10 2023-06-08 op 		strlcpy(b, c->iri.schema, sizeof(b));
106 47b0ff10 2023-06-08 op 		strlcat(b, "://", sizeof(b));
107 47b0ff10 2023-06-08 op 
108 47b0ff10 2023-06-08 op 		/* log the decoded host name, but if it was invalid
109 47b0ff10 2023-06-08 op 		 * use the raw one. */
110 47b0ff10 2023-06-08 op 		if (*c->domain != '\0')
111 47b0ff10 2023-06-08 op 			strlcat(b, c->domain, sizeof(b));
112 47b0ff10 2023-06-08 op 		else
113 47b0ff10 2023-06-08 op 			strlcat(b, c->iri.host, sizeof(b));
114 47b0ff10 2023-06-08 op 
115 47b0ff10 2023-06-08 op 		if (*c->iri.path != '/')
116 47b0ff10 2023-06-08 op 			strlcat(b, "/", sizeof(b));
117 47b0ff10 2023-06-08 op 		strlcat(b, c->iri.path, sizeof(b)); /* TODO: sanitize UTF8 */
118 47b0ff10 2023-06-08 op 		if (*c->iri.query != '\0') {	    /* TODO: sanitize UTF8 */
119 47b0ff10 2023-06-08 op 			strlcat(b, "?", sizeof(b));
120 47b0ff10 2023-06-08 op 			strlcat(b, c->iri.query, sizeof(b));
121 47b0ff10 2023-06-08 op 		}
122 47b0ff10 2023-06-08 op 	} else {
123 47b0ff10 2023-06-08 op 		if ((t = c->req) == NULL)
124 47b0ff10 2023-06-08 op 			t = "";
125 47b0ff10 2023-06-08 op 		strlcpy(b, t, sizeof(b));
126 47b0ff10 2023-06-08 op 	}
127 47b0ff10 2023-06-08 op 
128 47b0ff10 2023-06-08 op 	if ((t = memchr(meta, '\r', l)) == NULL)
129 47b0ff10 2023-06-08 op 		t = meta + len;
130 47b0ff10 2023-06-08 op 
131 47b0ff10 2023-06-08 op 	ec = asprintf(&fmted, "%s:%s GET %s %.*s", hbuf, sbuf, b,
132 47b0ff10 2023-06-08 op 	    (int)(t-meta), meta);
133 47b0ff10 2023-06-08 op 	if (ec == -1)
134 47b0ff10 2023-06-08 op 		err(1, "asprintf");
135 47b0ff10 2023-06-08 op 
136 47b0ff10 2023-06-08 op 	proc_compose(conf.ps, PROC_LOGGER, IMSG_LOG_REQUEST,
137 47b0ff10 2023-06-08 op 	    fmted, ec + 1);
138 47b0ff10 2023-06-08 op 
139 47b0ff10 2023-06-08 op 	free(fmted);
140 47b0ff10 2023-06-08 op }
141 47b0ff10 2023-06-08 op 
142 419a4235 2021-04-28 op static int
143 419a4235 2021-04-28 op write_pidfile(const char *pidfile)
144 419a4235 2021-04-28 op {
145 419a4235 2021-04-28 op 	struct flock	lock;
146 419a4235 2021-04-28 op 	int		fd;
147 d672b8fb 2021-02-03 op 
148 419a4235 2021-04-28 op 	if (pidfile == NULL)
149 419a4235 2021-04-28 op 		return -1;
150 419a4235 2021-04-28 op 
151 419a4235 2021-04-28 op 	if ((fd = open(pidfile, O_WRONLY|O_CREAT|O_CLOEXEC, 0600)) == -1)
152 df5058c9 2023-06-05 op 		fatal("can't open pidfile %s", pidfile);
153 419a4235 2021-04-28 op 
154 419a4235 2021-04-28 op 	lock.l_start = 0;
155 419a4235 2021-04-28 op 	lock.l_len = 0;
156 419a4235 2021-04-28 op 	lock.l_type = F_WRLCK;
157 419a4235 2021-04-28 op 	lock.l_whence = SEEK_SET;
158 419a4235 2021-04-28 op 
159 419a4235 2021-04-28 op 	if (fcntl(fd, F_SETLK, &lock) == -1)
160 df5058c9 2023-06-05 op 		fatalx("can't lock %s, gmid is already running?", pidfile);
161 419a4235 2021-04-28 op 
162 419a4235 2021-04-28 op 	if (ftruncate(fd, 0) == -1)
163 df5058c9 2023-06-05 op 		fatal("ftruncate %s", pidfile);
164 419a4235 2021-04-28 op 
165 419a4235 2021-04-28 op 	dprintf(fd, "%d\n", getpid());
166 419a4235 2021-04-28 op 
167 419a4235 2021-04-28 op 	return fd;
168 419a4235 2021-04-28 op }
169 419a4235 2021-04-28 op 
170 8d6ae384 2021-01-24 op int
171 8d6ae384 2021-01-24 op main(int argc, char **argv)
172 8d6ae384 2021-01-24 op {
173 c26f2460 2023-06-08 op 	struct privsep *ps;
174 c26f2460 2023-06-08 op 	const char *errstr, *title = NULL;
175 c26f2460 2023-06-08 op 	size_t i;
176 c26f2460 2023-06-08 op 	int ch, conftest = 0;
177 c26f2460 2023-06-08 op 	int proc_instance = 0;
178 c26f2460 2023-06-08 op 	int proc_id = PROC_PARENT;
179 c26f2460 2023-06-08 op 	int argc0 = argc;
180 501e489c 2021-01-24 op 
181 0046c1fe 2023-06-06 op 	setlocale(LC_CTYPE, "");
182 0046c1fe 2023-06-06 op 
183 eae52ad4 2023-06-06 op 	/* log to stderr until daemonized */
184 eae52ad4 2023-06-06 op 	log_init(1, LOG_DAEMON);
185 c68baad2 2023-06-06 op 	config_init();
186 8d6ae384 2021-01-24 op 
187 5777923b 2021-06-29 op 	while ((ch = getopt_long(argc, argv, opts, longopts, NULL)) != -1) {
188 3e4749f7 2020-10-02 op 		switch (ch) {
189 0ac785a6 2023-06-05 op 		case 'c':
190 0ac785a6 2023-06-05 op 			config_path = absolutify_path(optarg);
191 0ac785a6 2023-06-05 op 			break;
192 f98e9045 2021-06-29 op 		case 'D':
193 f98e9045 2021-06-29 op 			if (cmdline_symset(optarg) == -1)
194 df5058c9 2023-06-05 op 				fatalx("could not parse macro definition: %s",
195 8a50fc03 2021-07-07 op 				    optarg);
196 f98e9045 2021-06-29 op 			break;
197 0ac785a6 2023-06-05 op 		case 'f':
198 ca84625a 2023-06-08 op 			debug = 1;
199 46af8c6c 2021-01-27 op 			break;
200 3e4749f7 2020-10-02 op 		case 'h':
201 9327bc04 2021-06-29 op 			usage();
202 3e4749f7 2020-10-02 op 			return 0;
203 c26f2460 2023-06-08 op 		case 'I':
204 c26f2460 2023-06-08 op 			proc_instance = strtonum(optarg, 0, PROC_MAX_INSTANCES,
205 c26f2460 2023-06-08 op 			    &errstr);
206 c26f2460 2023-06-08 op 			if (errstr != NULL)
207 c26f2460 2023-06-08 op 				fatalx("invalid process instance");
208 c26f2460 2023-06-08 op 			break;
209 15902770 2021-01-15 op 		case 'n':
210 f0a01fc7 2021-10-09 op 			conftest++;
211 721e2325 2020-11-18 op 			break;
212 8e8b2e25 2021-04-28 op 		case 'P':
213 f1f13cb7 2023-06-08 op 			pidfile = absolutify_path(optarg);
214 8e8b2e25 2021-04-28 op 			break;
215 c26f2460 2023-06-08 op 		case 'T':
216 c26f2460 2023-06-08 op 			title = optarg;
217 c26f2460 2023-06-08 op 			proc_id = proc_getid(procs, nitems(procs), title);
218 c26f2460 2023-06-08 op 			if (proc_id == PROC_MAX)
219 c26f2460 2023-06-08 op 				fatalx("invalid process name");
220 c26f2460 2023-06-08 op 			break;
221 5777923b 2021-06-29 op 		case 'V':
222 fdb43a4c 2021-06-29 op 			puts("Version: " GMID_STRING);
223 5777923b 2021-06-29 op 			return 0;
224 8904fa0e 2021-01-27 op 		case 'v':
225 ca84625a 2023-06-08 op 			verbose = 1;
226 8904fa0e 2021-01-27 op 			break;
227 3e4749f7 2020-10-02 op 		default:
228 9327bc04 2021-06-29 op 			usage();
229 3e4749f7 2020-10-02 op 			return 1;
230 3e4749f7 2020-10-02 op 		}
231 3e4749f7 2020-10-02 op 	}
232 3e4749f7 2020-10-02 op 
233 c26f2460 2023-06-08 op 	if (argc - optind != 0)
234 d29a2ee2 2022-09-06 op 		usage();
235 d29a2ee2 2022-09-06 op 
236 32fbc478 2022-09-08 op 	parse_conf(config_path);
237 c26f2460 2023-06-08 op 	if (*conf.chroot != '\0' && *conf.user == '\0')
238 c26f2460 2023-06-08 op 		fatalx("can't chroot without a user to switch to after.");
239 d672b8fb 2021-02-03 op 
240 132cae8c 2021-01-18 op 	if (conftest) {
241 f0a01fc7 2021-10-09 op 		fprintf(stderr, "config OK\n");
242 f0a01fc7 2021-10-09 op 		if (conftest > 1)
243 f0a01fc7 2021-10-09 op 			print_conf();
244 132cae8c 2021-01-18 op 		return 0;
245 132cae8c 2021-01-18 op 	}
246 4a28dd01 2020-12-28 op 
247 c26f2460 2023-06-08 op 	if ((ps = calloc(1, sizeof(*ps))) == NULL)
248 c26f2460 2023-06-08 op 		fatal("calloc");
249 c26f2460 2023-06-08 op 	ps->ps_env = &conf;
250 c26f2460 2023-06-08 op 	conf.ps = ps;
251 c26f2460 2023-06-08 op 	if (*conf.user) {
252 c26f2460 2023-06-08 op 		if (geteuid())
253 c26f2460 2023-06-08 op 			fatalx("need root privileges");
254 c26f2460 2023-06-08 op 		if ((ps->ps_pw = getpwnam(conf.user)) == NULL)
255 c26f2460 2023-06-08 op 			fatalx("unknown user %s", conf.user);
256 c26f2460 2023-06-08 op 	}
257 8a50fc03 2021-07-07 op 
258 c26f2460 2023-06-08 op 	ps->ps_instances[PROC_SERVER] = conf.prefork;
259 c26f2460 2023-06-08 op 	ps->ps_instance = proc_instance;
260 c26f2460 2023-06-08 op 	if (title != NULL)
261 c26f2460 2023-06-08 op 		ps->ps_title[proc_id] = title;
262 c26f2460 2023-06-08 op 
263 c26f2460 2023-06-08 op 	if (*conf.chroot != '\0') {
264 c26f2460 2023-06-08 op 		for (i = 0; i < nitems(procs); ++i)
265 c26f2460 2023-06-08 op 			procs[i].p_chroot = conf.chroot;
266 0170ba02 2021-01-17 op 	}
267 c26f2460 2023-06-08 op 
268 ca84625a 2023-06-08 op 	log_init(debug, LOG_DAEMON);
269 ca84625a 2023-06-08 op 	log_setverbose(verbose);
270 c26f2460 2023-06-08 op 	if (title != NULL)
271 c26f2460 2023-06-08 op 		log_procinit(title);
272 4a28dd01 2020-12-28 op 
273 c26f2460 2023-06-08 op 	/* only the parent returns */
274 ca84625a 2023-06-08 op 	proc_init(ps, procs, nitems(procs), debug, argc0, argv, proc_id);
275 3e4749f7 2020-10-02 op 
276 c26f2460 2023-06-08 op 	log_procinit("main");
277 ca84625a 2023-06-08 op 	if (!debug && daemon(0, 0) == -1)
278 c26f2460 2023-06-08 op 		fatal("daemon");
279 3841a369 2021-04-20 op 
280 8e8b2e25 2021-04-28 op 	pidfd = write_pidfile(pidfile);
281 8e8b2e25 2021-04-28 op 
282 c26f2460 2023-06-08 op 	sandbox_main_process();
283 c26f2460 2023-06-08 op 
284 c26f2460 2023-06-08 op 	event_init();
285 c26f2460 2023-06-08 op 
286 c26f2460 2023-06-08 op 	signal(SIGPIPE, SIG_IGN);
287 b9c9123b 2021-03-20 op 
288 c26f2460 2023-06-08 op 	signal_set(&ps->ps_evsigint, SIGINT, main_sig_handler, ps);
289 c26f2460 2023-06-08 op 	signal_set(&ps->ps_evsigterm, SIGTERM, main_sig_handler, ps);
290 c26f2460 2023-06-08 op 	signal_set(&ps->ps_evsigchld, SIGCHLD, main_sig_handler, ps);
291 c26f2460 2023-06-08 op 	signal_set(&ps->ps_evsighup, SIGHUP, main_sig_handler, ps);
292 ca21e100 2021-02-04 op 
293 c26f2460 2023-06-08 op 	signal_add(&ps->ps_evsigint, NULL);
294 c26f2460 2023-06-08 op 	signal_add(&ps->ps_evsigterm, NULL);
295 c26f2460 2023-06-08 op 	signal_add(&ps->ps_evsigchld, NULL);
296 c26f2460 2023-06-08 op 	signal_add(&ps->ps_evsighup, NULL);
297 1d3eb470 2021-03-20 op 
298 c26f2460 2023-06-08 op 	proc_connect(ps);
299 ca21e100 2021-02-04 op 
300 c26f2460 2023-06-08 op 	if (main_configure(&conf) == -1)
301 c26f2460 2023-06-08 op 		fatal("configuration failed");
302 bc99d868 2021-03-19 op 
303 c26f2460 2023-06-08 op 	event_dispatch();
304 c26f2460 2023-06-08 op 	main_shutdown(&conf);
305 c26f2460 2023-06-08 op 	/* NOTREACHED */
306 c26f2460 2023-06-08 op 	return 0;
307 c26f2460 2023-06-08 op }
308 ca21e100 2021-02-04 op 
309 c26f2460 2023-06-08 op static int
310 c26f2460 2023-06-08 op main_configure(struct conf *conf)
311 c26f2460 2023-06-08 op {
312 c26f2460 2023-06-08 op 	struct privsep	*ps = conf->ps;
313 ca21e100 2021-02-04 op 
314 c26f2460 2023-06-08 op 	conf->reload = conf->prefork;
315 ca21e100 2021-02-04 op 
316 c26f2460 2023-06-08 op 	if (proc_compose(ps, PROC_SERVER, IMSG_RECONF_START, NULL, 0) == -1)
317 c26f2460 2023-06-08 op 		return -1;
318 ca21e100 2021-02-04 op 
319 c26f2460 2023-06-08 op 	if (config_send(conf, fcgi, &hosts) == -1)
320 c26f2460 2023-06-08 op 		return -1;
321 c26f2460 2023-06-08 op 
322 c26f2460 2023-06-08 op 	if (proc_compose(ps, PROC_SERVER, IMSG_RECONF_END, NULL, 0) == -1)
323 c26f2460 2023-06-08 op 		return -1;
324 c26f2460 2023-06-08 op 
325 c26f2460 2023-06-08 op 	return 0;
326 c26f2460 2023-06-08 op }
327 c26f2460 2023-06-08 op 
328 c26f2460 2023-06-08 op static void
329 c26f2460 2023-06-08 op main_configure_done(struct conf *conf)
330 c26f2460 2023-06-08 op {
331 c26f2460 2023-06-08 op 	if (conf->reload == 0) {
332 c26f2460 2023-06-08 op 		log_warnx("configuration already done");
333 c26f2460 2023-06-08 op 		return;
334 ca21e100 2021-02-04 op 	}
335 1d3eb470 2021-03-20 op 
336 c26f2460 2023-06-08 op 	conf->reload--;
337 c26f2460 2023-06-08 op 	/* send IMSG_CTL_START? */
338 c26f2460 2023-06-08 op }
339 c26f2460 2023-06-08 op 
340 c26f2460 2023-06-08 op static void
341 c26f2460 2023-06-08 op main_reload(struct conf *conf)
342 c26f2460 2023-06-08 op {
343 c26f2460 2023-06-08 op 	if (conf->reload) {
344 c26f2460 2023-06-08 op 		log_debug("%s: already in progress: %d pending",
345 c26f2460 2023-06-08 op 		    __func__, conf->reload);
346 c26f2460 2023-06-08 op 		return;
347 5c485529 2022-09-10 op 	}
348 1d3eb470 2021-03-20 op 
349 c26f2460 2023-06-08 op 	log_debug("%s: config file %s", __func__, config_path);
350 c26f2460 2023-06-08 op 	config_free();
351 c26f2460 2023-06-08 op 	parse_conf(config_path); /* XXX should handle error here */
352 1d3eb470 2021-03-20 op 
353 c26f2460 2023-06-08 op 	main_configure(conf);
354 c26f2460 2023-06-08 op }
355 c26f2460 2023-06-08 op 
356 c26f2460 2023-06-08 op static void
357 c26f2460 2023-06-08 op main_sig_handler(int sig, short ev, void *arg)
358 c26f2460 2023-06-08 op {
359 c26f2460 2023-06-08 op 	struct privsep	*ps = arg;
360 c26f2460 2023-06-08 op 
361 c26f2460 2023-06-08 op 	/*
362 c26f2460 2023-06-08 op 	 * Normal signal handler rules don't apply here because libevent
363 c26f2460 2023-06-08 op 	 * decouples for us.
364 c26f2460 2023-06-08 op 	 */
365 c26f2460 2023-06-08 op 
366 c26f2460 2023-06-08 op 	switch (sig) {
367 c26f2460 2023-06-08 op 	case SIGHUP:
368 c26f2460 2023-06-08 op 		if (privsep_process != PROC_PARENT)
369 c26f2460 2023-06-08 op 			return;
370 c26f2460 2023-06-08 op 		log_info("reload requested with SIGHUP");
371 c26f2460 2023-06-08 op 		main_reload(ps->ps_env);
372 c26f2460 2023-06-08 op 		break;
373 c26f2460 2023-06-08 op 	case SIGCHLD:
374 c26f2460 2023-06-08 op 		log_warnx("one child died, quitting");
375 c26f2460 2023-06-08 op 		/* fallthrough */
376 c26f2460 2023-06-08 op 	case SIGTERM:
377 c26f2460 2023-06-08 op 	case SIGINT:
378 c26f2460 2023-06-08 op 		main_shutdown(ps->ps_env);
379 c26f2460 2023-06-08 op 		break;
380 c26f2460 2023-06-08 op 	default:
381 c26f2460 2023-06-08 op 		fatalx("unexpected signal %d", sig);
382 c26f2460 2023-06-08 op 	}
383 c26f2460 2023-06-08 op }
384 c26f2460 2023-06-08 op 
385 c26f2460 2023-06-08 op static int
386 c26f2460 2023-06-08 op main_dispatch_server(int fd, struct privsep_proc *p, struct imsg *imsg)
387 c26f2460 2023-06-08 op {
388 c26f2460 2023-06-08 op 	struct privsep	*ps = p->p_ps;
389 c26f2460 2023-06-08 op 	struct conf	*conf = ps->ps_env;
390 c26f2460 2023-06-08 op 
391 c26f2460 2023-06-08 op 	switch (imsg->hdr.type) {
392 c26f2460 2023-06-08 op 	case IMSG_RECONF_DONE:
393 c26f2460 2023-06-08 op 		main_configure_done(conf);
394 c26f2460 2023-06-08 op 		break;
395 c26f2460 2023-06-08 op 	default:
396 c26f2460 2023-06-08 op 		return -1;
397 c26f2460 2023-06-08 op 	}
398 c26f2460 2023-06-08 op 
399 c26f2460 2023-06-08 op 	return 0;
400 c26f2460 2023-06-08 op }
401 c26f2460 2023-06-08 op 
402 c26f2460 2023-06-08 op static int
403 c26f2460 2023-06-08 op main_dispatch_logger(int fd, struct privsep_proc *p, struct imsg *imsg)
404 c26f2460 2023-06-08 op {
405 c26f2460 2023-06-08 op 	struct privsep	*ps = p->p_ps;
406 c26f2460 2023-06-08 op 	struct conf	*conf = ps->ps_env;
407 c26f2460 2023-06-08 op 
408 c26f2460 2023-06-08 op 	switch (imsg->hdr.type) {
409 c26f2460 2023-06-08 op 	case IMSG_RECONF_DONE:
410 c26f2460 2023-06-08 op 		main_configure_done(conf);
411 c26f2460 2023-06-08 op 		break;
412 c26f2460 2023-06-08 op 	default:
413 c26f2460 2023-06-08 op 		return -1;
414 c26f2460 2023-06-08 op 	}
415 c26f2460 2023-06-08 op 
416 c26f2460 2023-06-08 op 	return 0;
417 c26f2460 2023-06-08 op }
418 c26f2460 2023-06-08 op 
419 c26f2460 2023-06-08 op static void __dead
420 c26f2460 2023-06-08 op main_shutdown(struct conf *conf)
421 c26f2460 2023-06-08 op {
422 c26f2460 2023-06-08 op 	proc_kill(conf->ps);
423 c26f2460 2023-06-08 op 	config_free();
424 c26f2460 2023-06-08 op 	free(conf->ps);
425 c26f2460 2023-06-08 op 	/* free(conf); */
426 c26f2460 2023-06-08 op 
427 c26f2460 2023-06-08 op 	log_info("parent terminating, pid %d", getpid());
428 c26f2460 2023-06-08 op 
429 8e8b2e25 2021-04-28 op 	if (pidfd != -1)
430 8e8b2e25 2021-04-28 op 		close(pidfd);
431 8e8b2e25 2021-04-28 op 
432 c26f2460 2023-06-08 op 	exit(0);
433 3e4749f7 2020-10-02 op }