2 a555e0d6 2022-07-04 op * Copyright (c) 2020, 2021, 2022 Omar Polo <op@omarpolo.com>
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.
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.
17 52418c8d 2021-02-12 op #include "gmid.h"
19 8443bff7 2021-01-25 op #include <sys/stat.h>
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 7e1df73d 2021-03-31 op #include <libgen.h>
25 bcf5d929 2021-02-01 op #include <limits.h>
26 ae08ec7d 2021-01-25 op #include <pwd.h>
27 0cf902af 2020-11-03 op #include <signal.h>
28 3e4749f7 2020-10-02 op #include <string.h>
30 f98e9045 2021-06-29 op static const char *opts = "6c:D:d:fH:hnP:p:Vvx:";
32 e5d82d94 2022-03-19 op static const struct option longopts[] = {
33 5777923b 2021-06-29 op {"help", no_argument, NULL, 'h'},
34 5777923b 2021-06-29 op {"version", no_argument, NULL, 'V'},
35 5777923b 2021-06-29 op {NULL, 0, NULL, 0},
38 8ad1c570 2021-05-09 op struct fcgi fcgi[FCGI_MAX];
40 b8e64ccd 2021-03-31 op struct vhosthead hosts;
42 bc99d868 2021-03-19 op int sock4, sock6;
44 bc99d868 2021-03-19 op struct imsgbuf logibuf, exibuf, servibuf[PROC_MAX];
46 7b2d7432 2021-05-01 op const char *config_path, *certs_dir, *hostname, *pidfile, *cgi;
48 15902770 2021-01-15 op struct conf conf;
50 ca21e100 2021-02-04 op struct tls_config *tlsconf;
51 ae08ec7d 2021-01-25 op struct tls *ctx;
54 b9c9123b 2021-03-20 op dummy_handler(int signo)
59 7e1df73d 2021-03-31 op /* wrapper around dirname(3). dn must be PATH_MAX+1 at least. */
61 7e1df73d 2021-03-31 op pdirname(const char *path, char *dn)
63 7e1df73d 2021-03-31 op char p[PATH_MAX+1];
66 7e1df73d 2021-03-31 op strlcpy(p, path, sizeof(p));
67 7e1df73d 2021-03-31 op t = dirname(p);
68 7e1df73d 2021-03-31 op memmove(dn, t, strlen(t)+1);
72 7e1df73d 2021-03-31 op mkdirs(const char *path, mode_t mode)
74 7e1df73d 2021-03-31 op char dname[PATH_MAX+1];
76 7e1df73d 2021-03-31 op pdirname(path, dname);
77 7e1df73d 2021-03-31 op if (!strcmp(dname, "/"))
79 7e1df73d 2021-03-31 op mkdirs(dname, mode);
80 7e1df73d 2021-03-31 op if (mkdir(path, mode) != 0 && errno != EEXIST)
81 8443bff7 2021-01-25 op fatal("can't mkdir %s: %s", path, strerror(errno));
84 8443bff7 2021-01-25 op /* $XDG_DATA_HOME/gmid */
86 8443bff7 2021-01-25 op data_dir(void)
88 8443bff7 2021-01-25 op const char *home, *xdg;
91 8443bff7 2021-01-25 op if ((xdg = getenv("XDG_DATA_HOME")) == NULL) {
92 8443bff7 2021-01-25 op if ((home = getenv("HOME")) == NULL)
93 8443bff7 2021-01-25 op errx(1, "XDG_DATA_HOME and HOME both empty");
94 8443bff7 2021-01-25 op if (asprintf(&t, "%s/.local/share/gmid", home) == -1)
95 8443bff7 2021-01-25 op err(1, "asprintf");
97 7e1df73d 2021-03-31 op if (asprintf(&t, "%s/gmid", xdg) == -1)
98 7e1df73d 2021-03-31 op err(1, "asprintf");
101 7e1df73d 2021-03-31 op mkdirs(t, 0755);
106 8443bff7 2021-01-25 op load_local_cert(const char *hostname, const char *dir)
108 8443bff7 2021-01-25 op char *cert, *key;
109 b8e64ccd 2021-03-31 op struct vhost *h;
111 8443bff7 2021-01-25 op if (asprintf(&cert, "%s/%s.cert.pem", dir, hostname) == -1)
112 8443bff7 2021-01-25 op errx(1, "asprintf");
113 8443bff7 2021-01-25 op if (asprintf(&key, "%s/%s.key.pem", dir, hostname) == -1)
114 8443bff7 2021-01-25 op errx(1, "asprintf");
116 8443bff7 2021-01-25 op if (access(cert, R_OK) == -1 || access(key, R_OK) == -1)
117 8443bff7 2021-01-25 op gen_certificate(hostname, cert, key);
119 b8e64ccd 2021-03-31 op h = TAILQ_FIRST(&hosts);
120 b8e64ccd 2021-03-31 op h->cert = cert;
121 b8e64ccd 2021-03-31 op h->key = key;
122 b8e64ccd 2021-03-31 op h->domain = hostname;
126 ae08ec7d 2021-01-25 op load_vhosts(void)
128 fdea6aa0 2021-04-30 op struct vhost *h;
129 fdea6aa0 2021-04-30 op struct location *l;
131 b8e64ccd 2021-03-31 op TAILQ_FOREACH(h, &hosts, vhosts) {
132 fdea6aa0 2021-04-30 op TAILQ_FOREACH(l, &h->locations, locations) {
133 fdea6aa0 2021-04-30 op if (l->dir == NULL)
135 fdea6aa0 2021-04-30 op if ((l->dirfd = open(l->dir, O_RDONLY | O_DIRECTORY)) == -1)
136 807869c1 2021-10-07 op fatal("open %s for domain %s: %s", l->dir, h->domain,
137 807869c1 2021-10-07 op strerror(errno));
143 9468027b 2020-10-15 op make_socket(int port, int family)
146 9468027b 2020-10-15 op struct sockaddr_in addr4;
147 9468027b 2020-10-15 op struct sockaddr_in6 addr6;
148 9468027b 2020-10-15 op struct sockaddr *addr;
149 9468027b 2020-10-15 op socklen_t len;
151 81e0f000 2021-09-24 op switch (family) {
152 9468027b 2020-10-15 op case AF_INET:
153 df0c2926 2021-09-24 op memset(&addr4, 0, sizeof(addr4));
154 9468027b 2020-10-15 op addr4.sin_family = family;
155 9468027b 2020-10-15 op addr4.sin_port = htons(port);
156 9468027b 2020-10-15 op addr4.sin_addr.s_addr = INADDR_ANY;
157 9468027b 2020-10-15 op addr = (struct sockaddr*)&addr4;
158 9468027b 2020-10-15 op len = sizeof(addr4);
161 9468027b 2020-10-15 op case AF_INET6:
162 df0c2926 2021-09-24 op memset(&addr6, 0, sizeof(addr6));
163 9468027b 2020-10-15 op addr6.sin6_family = AF_INET6;
164 9468027b 2020-10-15 op addr6.sin6_port = htons(port);
165 9468027b 2020-10-15 op addr6.sin6_addr = in6addr_any;
166 9468027b 2020-10-15 op addr = (struct sockaddr*)&addr6;
167 9468027b 2020-10-15 op len = sizeof(addr6);
171 9468027b 2020-10-15 op /* unreachable */
175 9468027b 2020-10-15 op if ((sock = socket(family, SOCK_STREAM, 0)) == -1)
176 80bbcad5 2021-01-10 op fatal("socket: %s", strerror(errno));
179 3e4749f7 2020-10-02 op if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &v, sizeof(v)) == -1)
180 80bbcad5 2021-01-10 op fatal("setsockopt(SO_REUSEADDR): %s", strerror(errno));
183 3e4749f7 2020-10-02 op if (setsockopt(sock, SOL_SOCKET, SO_REUSEPORT, &v, sizeof(v)) == -1)
184 80bbcad5 2021-01-10 op fatal("setsockopt(SO_REUSEPORT): %s", strerror(errno));
186 592fd624 2020-10-07 op mark_nonblock(sock);
188 9468027b 2020-10-15 op if (bind(sock, addr, len) == -1)
189 80bbcad5 2021-01-10 op fatal("bind: %s", strerror(errno));
191 3e4749f7 2020-10-02 op if (listen(sock, 16) == -1)
192 80bbcad5 2021-01-10 op fatal("listen: %s", strerror(errno));
198 ff05125e 2021-10-15 op add_keypair(struct vhost *h)
200 ff05125e 2021-10-15 op if (h->ocsp == NULL) {
201 ff05125e 2021-10-15 op if (tls_config_add_keypair_file(tlsconf, h->cert, h->key) == -1)
202 ff05125e 2021-10-15 op fatal("failed to load the keypair (%s, %s)",
203 ff05125e 2021-10-15 op h->cert, h->key);
205 7fa67176 2021-10-15 op if (tls_config_add_keypair_ocsp_file(tlsconf, h->cert, h->key,
206 7fa67176 2021-10-15 op h->ocsp) == -1)
207 ff05125e 2021-10-15 op fatal("failed to load the keypair (%s, %s, %s)",
208 ff05125e 2021-10-15 op h->cert, h->key, h->ocsp);
213 ae08ec7d 2021-01-25 op setup_tls(void)
215 ae08ec7d 2021-01-25 op struct vhost *h;
217 881a9dd9 2021-01-16 op if ((tlsconf = tls_config_new()) == NULL)
218 132cae8c 2021-01-18 op fatal("tls_config_new");
220 881a9dd9 2021-01-16 op /* optionally accept client certs, but don't try to verify them */
221 881a9dd9 2021-01-16 op tls_config_verify_client_optional(tlsconf);
222 881a9dd9 2021-01-16 op tls_config_insecure_noverifycert(tlsconf);
224 881a9dd9 2021-01-16 op if (tls_config_set_protocols(tlsconf, conf.protos) == -1)
225 132cae8c 2021-01-18 op fatal("tls_config_set_protocols");
227 881a9dd9 2021-01-16 op if ((ctx = tls_server()) == NULL)
228 132cae8c 2021-01-18 op fatal("tls_server failure");
230 b8e64ccd 2021-03-31 op h = TAILQ_FIRST(&hosts);
232 ae08ec7d 2021-01-25 op /* we need to set something, then we can add how many key we want */
233 b8e64ccd 2021-03-31 op if (tls_config_set_keypair_file(tlsconf, h->cert, h->key))
234 ca21e100 2021-02-04 op fatal("tls_config_set_keypair_file failed for (%s, %s)",
235 b8e64ccd 2021-03-31 op h->cert, h->key);
237 7fa67176 2021-10-15 op /* same for OCSP */
238 ff05125e 2021-10-15 op if (h->ocsp != NULL &&
239 ff05125e 2021-10-15 op tls_config_set_ocsp_staple_file(tlsconf, h->ocsp) == -1)
240 ff05125e 2021-10-15 op fatal("tls_config_set_ocsp_staple_file failed for (%s)",
243 ff05125e 2021-10-15 op while ((h = TAILQ_NEXT(h, vhosts)) != NULL)
244 ff05125e 2021-10-15 op add_keypair(h);
246 881a9dd9 2021-01-16 op if (tls_configure(ctx, tlsconf) == -1)
247 132cae8c 2021-01-18 op fatal("tls_configure: %s", tls_error(ctx));
251 bc99d868 2021-03-19 op listener_main(struct imsgbuf *ibuf)
254 54203115 2022-04-08 op if (!conf.mime.skip_defaults && load_default_mime(&conf.mime) == -1)
255 d8d170aa 2022-04-08 op fatal("load_default_mime: %s", strerror(errno));
256 18bd8391 2022-04-08 op sort_mime(&conf.mime);
257 ae08ec7d 2021-01-25 op load_vhosts();
258 bc99d868 2021-03-19 op loop(ctx, sock4, sock6, ibuf);
263 8d6ae384 2021-01-24 op init_config(void)
265 b8e64ccd 2021-03-31 op TAILQ_INIT(&hosts);
267 15902770 2021-01-15 op conf.port = 1965;
268 15902770 2021-01-15 op conf.ipv6 = 0;
269 5bc3c98e 2021-01-15 op conf.protos = TLS_PROTOCOL_TLSv1_2 | TLS_PROTOCOL_TLSv1_3;
271 b2a6b613 2021-01-21 op init_mime(&conf.mime);
273 ae08ec7d 2021-01-25 op conf.chroot = NULL;
274 ae08ec7d 2021-01-25 op conf.user = NULL;
276 a709ddf5 2021-02-07 op conf.prefork = 3;
280 ca21e100 2021-02-04 op free_config(void)
282 b8e64ccd 2021-03-31 op struct vhost *h, *th;
283 b8e64ccd 2021-03-31 op struct location *l, *tl;
284 b7967bc1 2021-01-02 op struct proxy *p, *tp;
285 9cc630aa 2021-04-28 op struct envlist *e, *te;
286 cc8c2901 2021-04-29 op struct alist *a, *ta;
289 419a4235 2021-04-28 op v = conf.verbose;
291 d8d170aa 2022-04-08 op free_mime(&conf.mime);
292 ca21e100 2021-02-04 op free(conf.chroot);
293 ca21e100 2021-02-04 op free(conf.user);
294 ca21e100 2021-02-04 op memset(&conf, 0, sizeof(conf));
296 419a4235 2021-04-28 op conf.verbose = v;
298 b8e64ccd 2021-03-31 op TAILQ_FOREACH_SAFE(h, &hosts, vhosts, th) {
299 b8e64ccd 2021-03-31 op TAILQ_FOREACH_SAFE(l, &h->locations, locations, tl) {
300 b8e64ccd 2021-03-31 op TAILQ_REMOVE(&h->locations, l, locations);
302 ca21e100 2021-02-04 op free((char*)l->match);
303 ca21e100 2021-02-04 op free((char*)l->lang);
304 ca21e100 2021-02-04 op free((char*)l->default_mime);
305 ca21e100 2021-02-04 op free((char*)l->index);
306 6abda252 2021-02-06 op free((char*)l->block_fmt);
307 fdea6aa0 2021-04-30 op free((char*)l->dir);
309 fdea6aa0 2021-04-30 op if (l->dirfd != -1)
310 fdea6aa0 2021-04-30 op close(l->dirfd);
315 9cc630aa 2021-04-28 op TAILQ_FOREACH_SAFE(e, &h->env, envs, te) {
316 3b33eab3 2021-06-12 op TAILQ_REMOVE(&h->env, e, envs);
318 ab1e0169 2021-06-12 op free(e->name);
319 ab1e0169 2021-06-12 op free(e->value);
323 ab1e0169 2021-06-12 op TAILQ_FOREACH_SAFE(e, &h->params, envs, te) {
324 ab1e0169 2021-06-12 op TAILQ_REMOVE(&h->params, e, envs);
326 9cc630aa 2021-04-28 op free(e->name);
327 9cc630aa 2021-04-28 op free(e->value);
331 cc8c2901 2021-04-29 op TAILQ_FOREACH_SAFE(a, &h->aliases, aliases, ta) {
332 3b33eab3 2021-06-12 op TAILQ_REMOVE(&h->aliases, a, aliases);
334 cc8c2901 2021-04-29 op free(a->alias);
338 b7967bc1 2021-01-02 op TAILQ_FOREACH_SAFE(p, &h->proxies, proxies, tp) {
339 b7967bc1 2021-01-02 op TAILQ_REMOVE(&h->proxies, p, proxies);
341 b7967bc1 2021-01-02 op free(p->match_proto);
342 b7967bc1 2021-01-02 op free(p->match_host);
343 b7967bc1 2021-01-02 op free(p->host);
344 1cdea97b 2022-01-30 op free(p->sni);
345 b7967bc1 2021-01-02 op tls_unload_file(p->cert, p->certlen);
346 b7967bc1 2021-01-02 op tls_unload_file(p->key, p->keylen);
350 fdea6aa0 2021-04-30 op free((char*)h->domain);
351 fdea6aa0 2021-04-30 op free((char*)h->cert);
352 fdea6aa0 2021-04-30 op free((char*)h->key);
353 193380ea 2021-10-24 op free((char*)h->ocsp);
354 fdea6aa0 2021-04-30 op free((char*)h->cgi);
355 fdea6aa0 2021-04-30 op free((char*)h->entrypoint);
357 b8e64ccd 2021-03-31 op TAILQ_REMOVE(&hosts, h, vhosts);
361 8ad1c570 2021-05-09 op for (i = 0; i < FCGI_MAX; ++i) {
362 8ad1c570 2021-05-09 op if (fcgi[i].path == NULL && fcgi[i].prog == NULL)
364 8ad1c570 2021-05-09 op free(fcgi[i].path);
365 8ad1c570 2021-05-09 op free(fcgi[i].port);
366 8ad1c570 2021-05-09 op free(fcgi[i].prog);
368 ef945cf4 2021-07-06 op fcgi[i].path = NULL;
369 ef945cf4 2021-07-06 op fcgi[i].port = NULL;
370 ef945cf4 2021-07-06 op fcgi[i].prog = NULL;
373 ca21e100 2021-02-04 op tls_free(ctx);
374 ca21e100 2021-02-04 op tls_config_free(tlsconf);
378 1d3eb470 2021-03-20 op wait_signal(void)
380 ca21e100 2021-02-04 op sigset_t mask;
383 ca21e100 2021-02-04 op sigemptyset(&mask);
384 ca21e100 2021-02-04 op sigaddset(&mask, SIGHUP);
385 1d3eb470 2021-03-20 op sigaddset(&mask, SIGINT);
386 1d3eb470 2021-03-20 op sigaddset(&mask, SIGTERM);
387 ca21e100 2021-02-04 op sigwait(&mask, &signo);
389 1d3eb470 2021-03-20 op return signo == SIGHUP;
393 ae08ec7d 2021-01-25 op drop_priv(void)
395 ae08ec7d 2021-01-25 op struct passwd *pw = NULL;
397 ae08ec7d 2021-01-25 op if (conf.chroot != NULL && conf.user == NULL)
398 ae08ec7d 2021-01-25 op fatal("can't chroot without an user to switch to after.");
400 ae08ec7d 2021-01-25 op if (conf.user != NULL) {
401 ae08ec7d 2021-01-25 op if ((pw = getpwnam(conf.user)) == NULL)
402 ae08ec7d 2021-01-25 op fatal("can't find user %s", conf.user);
405 ae08ec7d 2021-01-25 op if (conf.chroot != NULL) {
406 ae08ec7d 2021-01-25 op if (chroot(conf.chroot) != 0 || chdir("/") != 0)
407 ae08ec7d 2021-01-25 op fatal("%s: %s", conf.chroot, strerror(errno));
410 ae08ec7d 2021-01-25 op if (pw != NULL) {
411 ae08ec7d 2021-01-25 op if (setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid) == -1)
412 ae08ec7d 2021-01-25 op fatal("setresuid(%d): %s", pw->pw_uid,
413 ae08ec7d 2021-01-25 op strerror(errno));
416 ae08ec7d 2021-01-25 op if (getuid() == 0)
417 3abf91b0 2021-02-07 op log_warn(NULL, "not a good idea to run a network daemon as root");
423 3abf91b0 2021-02-07 op fprintf(stderr,
424 0be2a537 2021-06-29 op "Version: " GMID_STRING "\n"
425 f98e9045 2021-06-29 op "Usage: %s [-fnv] [-c config] [-D macro=value] [-P pidfile]\n"
426 0be2a537 2021-06-29 op " %s [-6hVv] [-d certs-dir] [-H hostname] [-p port] [-x cgi] [dir]\n",
427 0be2a537 2021-06-29 op getprogname(),
428 9327bc04 2021-06-29 op getprogname());
432 376a5407 2021-02-23 op logger_init(void)
436 376a5407 2021-02-23 op if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, p) == -1)
437 376a5407 2021-02-23 op err(1, "socketpair");
439 376a5407 2021-02-23 op switch (fork()) {
441 376a5407 2021-02-23 op err(1, "fork");
443 bc99d868 2021-03-19 op signal(SIGHUP, SIG_IGN);
445 376a5407 2021-02-23 op setproctitle("logger");
446 bc99d868 2021-03-19 op imsg_init(&logibuf, p[1]);
448 bc99d868 2021-03-19 op _exit(logger_main(p[1], &logibuf));
451 bc99d868 2021-03-19 op imsg_init(&logibuf, p[0]);
457 bc99d868 2021-03-19 op serve(int argc, char **argv, struct imsgbuf *ibuf)
459 b8e64ccd 2021-03-31 op char path[PATH_MAX];
461 b8e64ccd 2021-03-31 op struct vhost *h;
462 b8e64ccd 2021-03-31 op struct location *l;
464 81e0f000 2021-09-24 op if (config_path == NULL) {
465 d672b8fb 2021-02-03 op if (hostname == NULL)
466 d672b8fb 2021-02-03 op hostname = "localhost";
467 d672b8fb 2021-02-03 op if (certs_dir == NULL)
468 d672b8fb 2021-02-03 op certs_dir = data_dir();
469 d672b8fb 2021-02-03 op load_local_cert(hostname, certs_dir);
471 b8e64ccd 2021-03-31 op h = TAILQ_FIRST(&hosts);
472 b8e64ccd 2021-03-31 op h->domain = "*";
474 b8e64ccd 2021-03-31 op l = TAILQ_FIRST(&h->locations);
475 b8e64ccd 2021-03-31 op l->auto_index = 1;
476 b8e64ccd 2021-03-31 op l->match = "*";
478 d672b8fb 2021-02-03 op switch (argc) {
480 fdea6aa0 2021-04-30 op l->dir = getcwd(path, sizeof(path));
483 fdea6aa0 2021-04-30 op l->dir = absolutify_path(argv[0]);
490 fdea6aa0 2021-04-30 op log_notice(NULL, "serving %s on port %d", l->dir, conf.port);
493 d672b8fb 2021-02-03 op /* setup tls before dropping privileges: we don't want user
494 d672b8fb 2021-02-03 op * to put private certs inside the chroot. */
497 2c3e53da 2021-03-03 op for (i = 0; i < conf.prefork; ++i) {
498 2c3e53da 2021-03-03 op if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC,
499 2c3e53da 2021-03-03 op PF_UNSPEC, p) == -1)
500 2c3e53da 2021-03-03 op fatal("socketpair: %s", strerror(errno));
502 2c3e53da 2021-03-03 op switch (fork()) {
504 2c3e53da 2021-03-03 op fatal("fork: %s", strerror(errno));
505 2c3e53da 2021-03-03 op case 0: /* child */
507 bc99d868 2021-03-19 op imsg_init(&exibuf, p[1]);
508 2c3e53da 2021-03-03 op setproctitle("server");
509 bc99d868 2021-03-19 op _exit(listener_main(&exibuf));
512 bc99d868 2021-03-19 op imsg_init(&servibuf[i], p[0]);
516 2c3e53da 2021-03-03 op setproctitle("executor");
518 bc99d868 2021-03-19 op _exit(executor_main(ibuf));
522 419a4235 2021-04-28 op write_pidfile(const char *pidfile)
524 419a4235 2021-04-28 op struct flock lock;
527 419a4235 2021-04-28 op if (pidfile == NULL)
530 419a4235 2021-04-28 op if ((fd = open(pidfile, O_WRONLY|O_CREAT|O_CLOEXEC, 0600)) == -1)
531 419a4235 2021-04-28 op fatal("can't open pidfile %s: %s", pidfile, strerror(errno));
533 419a4235 2021-04-28 op lock.l_start = 0;
534 419a4235 2021-04-28 op lock.l_len = 0;
535 419a4235 2021-04-28 op lock.l_type = F_WRLCK;
536 419a4235 2021-04-28 op lock.l_whence = SEEK_SET;
538 419a4235 2021-04-28 op if (fcntl(fd, F_SETLK, &lock) == -1)
539 419a4235 2021-04-28 op fatal("can't lock %s, gmid is already running?", pidfile);
541 419a4235 2021-04-28 op if (ftruncate(fd, 0) == -1)
542 419a4235 2021-04-28 op fatal("ftruncate: %s: %s", pidfile, strerror(errno));
544 419a4235 2021-04-28 op dprintf(fd, "%d\n", getpid());
550 b8e64ccd 2021-03-31 op setup_configless(int argc, char **argv, const char *cgi)
552 b8e64ccd 2021-03-31 op struct vhost *host;
553 b8e64ccd 2021-03-31 op struct location *loc;
555 b8e64ccd 2021-03-31 op host = xcalloc(1, sizeof(*host));
556 b8e64ccd 2021-03-31 op host->cgi = cgi;
557 b8e64ccd 2021-03-31 op TAILQ_INSERT_HEAD(&hosts, host, vhosts);
559 b8e64ccd 2021-03-31 op loc = xcalloc(1, sizeof(*loc));
560 735336b2 2021-07-19 op loc->fcgi = -1;
561 b8e64ccd 2021-03-31 op TAILQ_INSERT_HEAD(&host->locations, loc, locations);
563 b8e64ccd 2021-03-31 op serve(argc, argv, NULL);
565 b8e64ccd 2021-03-31 op imsg_compose(&logibuf, IMSG_QUIT, 0, 0, -1, NULL, 0);
566 b8e64ccd 2021-03-31 op imsg_flush(&logibuf);
570 391825e3 2021-07-09 op parse_portno(const char *p)
572 391825e3 2021-07-09 op const char *errstr;
575 391825e3 2021-07-09 op n = strtonum(p, 0, UINT16_MAX, &errstr);
576 391825e3 2021-07-09 op if (errstr != NULL)
577 391825e3 2021-07-09 op yyerror("port number is %s: %s", errstr, p);
582 8d6ae384 2021-01-24 op main(int argc, char **argv)
584 d632468d 2021-03-20 op struct imsgbuf exibuf;
585 2c3e53da 2021-03-03 op int ch, conftest = 0, configless = 0;
586 8e8b2e25 2021-04-28 op int pidfd, old_ipv6, old_port;
588 8a50fc03 2021-07-07 op logger_init();
589 501e489c 2021-01-24 op init_config();
591 5777923b 2021-06-29 op while ((ch = getopt_long(argc, argv, opts, longopts, NULL)) != -1) {
592 3e4749f7 2020-10-02 op switch (ch) {
594 15902770 2021-01-15 op conf.ipv6 = 1;
595 8443bff7 2021-01-25 op configless = 1;
599 ca21e100 2021-02-04 op config_path = absolutify_path(optarg);
603 f98e9045 2021-06-29 op if (cmdline_symset(optarg) == -1)
604 8a50fc03 2021-07-07 op fatal("could not parse macro definition: %s",
609 8443bff7 2021-01-25 op certs_dir = optarg;
610 8443bff7 2021-01-25 op configless = 1;
614 3abf91b0 2021-02-07 op conf.foreground = 1;
618 8443bff7 2021-01-25 op hostname = optarg;
619 8443bff7 2021-01-25 op configless = 1;
631 8e8b2e25 2021-04-28 op pidfile = optarg;
635 15902770 2021-01-15 op conf.port = parse_portno(optarg);
636 8443bff7 2021-01-25 op configless = 1;
640 fdb43a4c 2021-06-29 op puts("Version: " GMID_STRING);
644 3abf91b0 2021-02-07 op conf.verbose++;
648 15902770 2021-01-15 op /* drop the starting / (if any) */
649 15902770 2021-01-15 op if (*optarg == '/')
651 b8e64ccd 2021-03-31 op cgi = optarg;
652 8443bff7 2021-01-25 op configless = 1;
660 8443bff7 2021-01-25 op argc -= optind;
661 8443bff7 2021-01-25 op argv += optind;
663 d672b8fb 2021-02-03 op if (config_path == NULL) {
664 72bbed91 2021-01-27 op configless = 1;
665 3abf91b0 2021-02-07 op conf.foreground = 1;
666 2c3e53da 2021-03-03 op conf.prefork = 1;
667 3abf91b0 2021-02-07 op conf.verbose++;
670 d672b8fb 2021-02-03 op if (config_path != NULL && (argc > 0 || configless))
671 8a50fc03 2021-07-07 op fatal("can't specify options in config mode.");
673 132cae8c 2021-01-18 op if (conftest) {
674 2e319276 2021-08-23 op if (config_path == NULL)
675 2e319276 2021-08-23 op fatal("missing configuration");
676 d672b8fb 2021-02-03 op parse_conf(config_path);
677 f0a01fc7 2021-10-09 op fprintf(stderr, "config OK\n");
678 f0a01fc7 2021-10-09 op if (conftest > 1)
679 f0a01fc7 2021-10-09 op print_conf();
683 3abf91b0 2021-02-07 op if (!conf.foreground && !configless) {
684 8a50fc03 2021-07-07 op /* log to syslog */
685 8a50fc03 2021-07-07 op imsg_compose(&logibuf, IMSG_LOG_TYPE, 0, 0, -1, NULL, 0);
686 8a50fc03 2021-07-07 op imsg_flush(&logibuf);
688 0170ba02 2021-01-17 op if (daemon(1, 1) == -1)
689 8a50fc03 2021-07-07 op fatal("daemon: %s", strerror(errno));
692 d672b8fb 2021-02-03 op if (config_path != NULL)
693 d672b8fb 2021-02-03 op parse_conf(config_path);
695 d672b8fb 2021-02-03 op sock4 = make_socket(conf.port, AF_INET);
697 d672b8fb 2021-02-03 op if (conf.ipv6)
698 d672b8fb 2021-02-03 op sock6 = make_socket(conf.port, AF_INET6);
700 3841a369 2021-04-20 op signal(SIGPIPE, SIG_IGN);
701 3841a369 2021-04-20 op signal(SIGCHLD, SIG_IGN);
703 bc99d868 2021-03-19 op if (configless) {
704 b8e64ccd 2021-03-31 op setup_configless(argc, argv, cgi);
708 8e8b2e25 2021-04-28 op pidfd = write_pidfile(pidfile);
711 a8a1f439 2021-07-07 op * Linux seems to call the event handlers even when we're
712 1b333122 2021-04-26 op * doing a sigwait. These dummy handlers are here to avoid
713 a8a1f439 2021-07-07 op * being terminated on SIGHUP, SIGINT or SIGTERM.
715 b9c9123b 2021-03-20 op signal(SIGHUP, dummy_handler);
716 b9c9123b 2021-03-20 op signal(SIGINT, dummy_handler);
717 b9c9123b 2021-03-20 op signal(SIGTERM, dummy_handler);
719 ca21e100 2021-02-04 op /* wait a sighup and reload the daemon */
723 bc99d868 2021-03-19 op if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC,
724 bc99d868 2021-03-19 op PF_UNSPEC, p) == -1)
725 bc99d868 2021-03-19 op fatal("socketpair: %s", strerror(errno));
727 ca21e100 2021-02-04 op switch (fork()) {
729 ca21e100 2021-02-04 op fatal("fork: %s", strerror(errno));
732 bc99d868 2021-03-19 op imsg_init(&exibuf, p[1]);
733 bc99d868 2021-03-19 op _exit(serve(argc, argv, &exibuf));
737 bc99d868 2021-03-19 op imsg_init(&exibuf, p[0]);
739 1d3eb470 2021-03-20 op if (!wait_signal())
742 3abf91b0 2021-02-07 op log_info(NULL, "reloading configuration %s", config_path);
744 bc99d868 2021-03-19 op /* close the executor (it'll close the servers too) */
745 bc99d868 2021-03-19 op imsg_compose(&exibuf, IMSG_QUIT, 0, 0, -1, NULL, 0);
746 bc99d868 2021-03-19 op imsg_flush(&exibuf);
749 ca21e100 2021-02-04 op old_ipv6 = conf.ipv6;
750 ca21e100 2021-02-04 op old_port = conf.port;
752 ca21e100 2021-02-04 op free_config();
753 ca21e100 2021-02-04 op init_config();
754 ca21e100 2021-02-04 op parse_conf(config_path);
756 ca21e100 2021-02-04 op if (old_port != conf.port) {
757 ca21e100 2021-02-04 op close(sock4);
758 ca21e100 2021-02-04 op close(sock6);
763 ca21e100 2021-02-04 op if (sock6 != -1 && old_ipv6 != conf.ipv6) {
764 ca21e100 2021-02-04 op close(sock6);
768 ca21e100 2021-02-04 op if (sock4 == -1)
769 ca21e100 2021-02-04 op sock4 = make_socket(conf.port, AF_INET);
770 ca21e100 2021-02-04 op if (sock6 == -1 && conf.ipv6)
771 ca21e100 2021-02-04 op sock6 = make_socket(conf.port, AF_INET6);
774 1d3eb470 2021-03-20 op imsg_compose(&exibuf, IMSG_QUIT, 0, 0, -1, NULL, 0);
775 1d3eb470 2021-03-20 op imsg_flush(&exibuf);
777 1d3eb470 2021-03-20 op imsg_compose(&logibuf, IMSG_QUIT, 0, 0, -1, NULL, 0);
778 1d3eb470 2021-03-20 op imsg_flush(&logibuf);
780 8e8b2e25 2021-04-28 op if (pidfd != -1)
781 8e8b2e25 2021-04-28 op close(pidfd);