2 3e4749f7 2020-10-02 op * Copyright (c) 2020 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 8443bff7 2021-01-25 op #include <sys/stat.h>
19 592fd624 2020-10-07 op #include <errno.h>
20 3e4749f7 2020-10-02 op #include <fcntl.h>
21 bcf5d929 2021-02-01 op #include <limits.h>
22 231bfcdc 2020-12-21 op #include <limits.h>
23 709d6e5e 2021-01-10 op #include <netdb.h>
24 ae08ec7d 2021-01-25 op #include <pwd.h>
25 0cf902af 2020-11-03 op #include <signal.h>
26 80bbcad5 2021-01-10 op #include <stdarg.h>
27 3e4749f7 2020-10-02 op #include <string.h>
29 8443bff7 2021-01-25 op #include <openssl/pem.h>
30 8443bff7 2021-01-25 op #include <openssl/x509.h>
32 488f059a 2020-12-24 op #include "gmid.h"
34 ca21e100 2021-02-04 op volatile sig_atomic_t hupped;
36 15902770 2021-01-15 op struct vhost hosts[HOSTSLEN];
38 d672b8fb 2021-02-03 op int exfd, foreground, verbose, sock4, sock6;
40 d672b8fb 2021-02-03 op const char *config_path, *certs_dir, *hostname;
42 15902770 2021-01-15 op struct conf conf;
44 ca21e100 2021-02-04 op struct tls_config *tlsconf;
45 ae08ec7d 2021-01-25 op struct tls *ctx;
48 80bbcad5 2021-01-10 op fatal(const char *fmt, ...)
52 80bbcad5 2021-01-10 op va_start(ap, fmt);
54 46af8c6c 2021-01-27 op if (foreground) {
55 80bbcad5 2021-01-10 op vfprintf(stderr, fmt, ap);
56 80bbcad5 2021-01-10 op fprintf(stderr, "\n");
58 80bbcad5 2021-01-10 op vsyslog(LOG_DAEMON | LOG_CRIT, fmt, ap);
65 709d6e5e 2021-01-10 op logs(int priority, struct client *c,
66 709d6e5e 2021-01-10 op const char *fmt, ...)
68 709d6e5e 2021-01-10 op char hbuf[NI_MAXHOST], sbuf[NI_MAXSERV];
69 709d6e5e 2021-01-10 op char *fmted, *s;
74 8904fa0e 2021-01-27 op if (foreground && !verbose) {
75 8904fa0e 2021-01-27 op if (priority == LOG_DEBUG || priority == LOG_INFO)
79 80bbcad5 2021-01-10 op va_start(ap, fmt);
81 dafb57b8 2021-01-15 op if (c == NULL) {
82 dafb57b8 2021-01-15 op strncpy(hbuf, "<internal>", sizeof(hbuf));
83 dafb57b8 2021-01-15 op sbuf[0] = '\0';
85 dafb57b8 2021-01-15 op len = sizeof(c->addr);
86 dafb57b8 2021-01-15 op ec = getnameinfo((struct sockaddr*)&c->addr, len,
87 f7b816dc 2021-01-15 op hbuf, sizeof(hbuf),
88 f7b816dc 2021-01-15 op sbuf, sizeof(sbuf),
89 f7b816dc 2021-01-15 op NI_NUMERICHOST | NI_NUMERICSERV);
91 dafb57b8 2021-01-15 op fatal("getnameinfo: %s", gai_strerror(ec));
94 709d6e5e 2021-01-10 op if (vasprintf(&fmted, fmt, ap) == -1)
95 709d6e5e 2021-01-10 op fatal("vasprintf: %s", strerror(errno));
97 46af8c6c 2021-01-27 op if (foreground)
98 709d6e5e 2021-01-10 op fprintf(stderr, "%s:%s %s\n", hbuf, sbuf, fmted);
100 709d6e5e 2021-01-10 op if (asprintf(&s, "%s:%s %s", hbuf, sbuf, fmted) == -1)
101 709d6e5e 2021-01-10 op fatal("asprintf: %s", strerror(errno));
102 709d6e5e 2021-01-10 op syslog(priority | LOG_DAEMON, "%s", s);
111 0be51733 2021-01-20 op /* strchr, but with a bound */
112 0be51733 2021-01-20 op static char *
113 0be51733 2021-01-20 op gmid_strnchr(char *s, int c, size_t len)
117 0be51733 2021-01-20 op for (i = 0; i < len; ++i)
118 0be51733 2021-01-20 op if (s[i] == c)
119 0be51733 2021-01-20 op return &s[i];
124 0be51733 2021-01-20 op log_request(struct client *c, char *meta, size_t l)
126 0be51733 2021-01-20 op char hbuf[NI_MAXHOST], sbuf[NI_MAXSERV], b[GEMINI_URL_LEN];
131 0be51733 2021-01-20 op len = sizeof(c->addr);
132 0be51733 2021-01-20 op ec = getnameinfo((struct sockaddr*)&c->addr, len,
133 0be51733 2021-01-20 op hbuf, sizeof(hbuf),
134 0be51733 2021-01-20 op sbuf, sizeof(sbuf),
135 0be51733 2021-01-20 op NI_NUMERICHOST | NI_NUMERICSERV);
137 0be51733 2021-01-20 op fatal("getnameinfo: %s", gai_strerror(ec));
139 0ab65593 2021-01-21 op if (c->iri.schema != NULL) {
140 0ab65593 2021-01-21 op /* serialize the IRI */
141 0ab65593 2021-01-21 op strlcpy(b, c->iri.schema, sizeof(b));
142 0ab65593 2021-01-21 op strlcat(b, "://", sizeof(b));
144 3300cbe0 2021-01-27 op /* log the decoded host name, but if it was invalid
145 3300cbe0 2021-01-27 op * use the raw one. */
146 3300cbe0 2021-01-27 op if (*c->domain != '\0')
147 3300cbe0 2021-01-27 op strlcat(b, c->domain, sizeof(b));
149 3300cbe0 2021-01-27 op strlcat(b, c->iri.host, sizeof(b));
151 0ab65593 2021-01-21 op strlcat(b, "/", sizeof(b));
152 0ab65593 2021-01-21 op strlcat(b, c->iri.path, sizeof(b)); /* TODO: sanitize UTF8 */
153 0ab65593 2021-01-21 op if (*c->iri.query != '\0') { /* TODO: sanitize UTF8 */
154 0ab65593 2021-01-21 op strlcat(b, "?", sizeof(b));
155 0ab65593 2021-01-21 op strlcat(b, c->iri.query, sizeof(b));
158 0ab65593 2021-01-21 op strlcpy(b, c->req, sizeof(b));
161 0be51733 2021-01-20 op if ((t = gmid_strnchr(meta, '\r', l)) == NULL)
162 0be51733 2021-01-20 op t = meta + len;
164 46af8c6c 2021-01-27 op if (foreground)
165 0be51733 2021-01-20 op fprintf(stderr, "%s:%s GET %s %.*s\n", hbuf, sbuf, b,
166 0be51733 2021-01-20 op (int)(t - meta), meta);
168 0be51733 2021-01-20 op syslog(LOG_INFO | LOG_DAEMON, "%s:%s GET %s %.*s",
169 0be51733 2021-01-20 op hbuf, sbuf, b, (int)(t - meta), meta);
173 4a28dd01 2020-12-28 op sig_handler(int sig)
177 ca21e100 2021-02-04 op hupped = sig == SIGHUP;
181 8443bff7 2021-01-25 op gen_certificate(const char *host, const char *certpath, const char *keypath)
184 8443bff7 2021-01-25 op EVP_PKEY *pkey;
187 8443bff7 2021-01-25 op X509_NAME *name;
189 8443bff7 2021-01-25 op const char *org = "gmid";
191 44ee1bac 2021-01-27 op LOGN(NULL, "generating new certificate for %s (it could take a while)",
194 8443bff7 2021-01-25 op if ((pkey = EVP_PKEY_new()) == NULL)
195 8443bff7 2021-01-25 op fatal("couldn't create a new private key");
197 8443bff7 2021-01-25 op if ((rsa = RSA_new()) == NULL)
198 8443bff7 2021-01-25 op fatal("could'nt generate rsa");
201 8443bff7 2021-01-25 op BN_set_word(&e, 17);
202 8443bff7 2021-01-25 op if (!RSA_generate_key_ex(rsa, 4096, &e, NULL))
203 8443bff7 2021-01-25 op fatal("couldn't generate a rsa key");
205 8443bff7 2021-01-25 op if (!EVP_PKEY_assign_RSA(pkey, rsa))
206 8443bff7 2021-01-25 op fatal("couldn't assign the key");
208 8443bff7 2021-01-25 op if ((x509 = X509_new()) == NULL)
209 8443bff7 2021-01-25 op fatal("couldn't generate the X509 certificate");
211 8443bff7 2021-01-25 op ASN1_INTEGER_set(X509_get_serialNumber(x509), 1);
212 8443bff7 2021-01-25 op X509_gmtime_adj(X509_get_notBefore(x509), 0);
213 8443bff7 2021-01-25 op X509_gmtime_adj(X509_get_notAfter(x509), 315360000L); /* 10 years */
215 8443bff7 2021-01-25 op if (!X509_set_pubkey(x509, pkey))
216 8443bff7 2021-01-25 op fatal("couldn't set the public key");
218 8443bff7 2021-01-25 op name = X509_get_subject_name(x509);
219 8443bff7 2021-01-25 op if (!X509_NAME_add_entry_by_txt(name, "O", MBSTRING_ASC, org, -1, -1, 0))
220 8443bff7 2021-01-25 op fatal("couldn't add N to cert");
221 8443bff7 2021-01-25 op if (!X509_NAME_add_entry_by_txt(name, "CN", MBSTRING_ASC, host, -1, -1, 0))
222 8443bff7 2021-01-25 op fatal("couldn't add CN to cert");
223 8443bff7 2021-01-25 op X509_set_issuer_name(x509, name);
225 8443bff7 2021-01-25 op if (!X509_sign(x509, pkey, EVP_sha256()))
226 8443bff7 2021-01-25 op fatal("couldn't sign the certificate");
228 8443bff7 2021-01-25 op if ((f = fopen(keypath, "w")) == NULL)
229 8443bff7 2021-01-25 op fatal("fopen(%s): %s", keypath, strerror(errno));
230 8443bff7 2021-01-25 op if (!PEM_write_PrivateKey(f, pkey, NULL, NULL, 0, NULL, NULL))
231 8443bff7 2021-01-25 op fatal("couldn't write private key");
234 8443bff7 2021-01-25 op if ((f = fopen(certpath, "w")) == NULL)
235 8443bff7 2021-01-25 op fatal("fopen(%s): %s", certpath, strerror(errno));
236 8443bff7 2021-01-25 op if (!PEM_write_X509(f, x509))
237 8443bff7 2021-01-25 op fatal("couldn't write cert");
240 8443bff7 2021-01-25 op X509_free(x509);
241 8443bff7 2021-01-25 op RSA_free(rsa);
244 8443bff7 2021-01-25 op /* XXX: create recursively */
246 8443bff7 2021-01-25 op mkdirs(const char *path)
248 8443bff7 2021-01-25 op if (mkdir(path, 0755) == -1 && errno != EEXIST)
249 8443bff7 2021-01-25 op fatal("can't mkdir %s: %s", path, strerror(errno));
252 8443bff7 2021-01-25 op /* $XDG_DATA_HOME/gmid */
254 8443bff7 2021-01-25 op data_dir(void)
256 8443bff7 2021-01-25 op const char *home, *xdg;
259 8443bff7 2021-01-25 op if ((xdg = getenv("XDG_DATA_HOME")) == NULL) {
260 8443bff7 2021-01-25 op if ((home = getenv("HOME")) == NULL)
261 8443bff7 2021-01-25 op errx(1, "XDG_DATA_HOME and HOME both empty");
262 8443bff7 2021-01-25 op if (asprintf(&t, "%s/.local/share/gmid", home) == -1)
263 8443bff7 2021-01-25 op err(1, "asprintf");
268 8443bff7 2021-01-25 op if (asprintf(&t, "%s/gmid", xdg) == -1)
269 8443bff7 2021-01-25 op err(1, "asprintf");
275 8443bff7 2021-01-25 op load_local_cert(const char *hostname, const char *dir)
277 8443bff7 2021-01-25 op char *cert, *key;
279 8443bff7 2021-01-25 op if (asprintf(&cert, "%s/%s.cert.pem", dir, hostname) == -1)
280 8443bff7 2021-01-25 op errx(1, "asprintf");
281 8443bff7 2021-01-25 op if (asprintf(&key, "%s/%s.key.pem", dir, hostname) == -1)
282 8443bff7 2021-01-25 op errx(1, "asprintf");
284 8443bff7 2021-01-25 op if (access(cert, R_OK) == -1 || access(key, R_OK) == -1)
285 8443bff7 2021-01-25 op gen_certificate(hostname, cert, key);
287 8443bff7 2021-01-25 op hosts[0].cert = cert;
288 8443bff7 2021-01-25 op hosts[0].key = key;
289 8443bff7 2021-01-25 op hosts[0].domain = hostname;
293 ae08ec7d 2021-01-25 op load_vhosts(void)
295 15902770 2021-01-15 op struct vhost *h;
297 15902770 2021-01-15 op for (h = hosts; h->domain != NULL; ++h) {
298 d3a08f4d 2021-01-17 op if ((h->dirfd = open(h->dir, O_RDONLY | O_DIRECTORY)) == -1)
299 132cae8c 2021-01-18 op fatal("open %s for domain %s", h->dir, h->domain);
304 9468027b 2020-10-15 op make_socket(int port, int family)
307 9468027b 2020-10-15 op struct sockaddr_in addr4;
308 9468027b 2020-10-15 op struct sockaddr_in6 addr6;
309 9468027b 2020-10-15 op struct sockaddr *addr;
310 9468027b 2020-10-15 op socklen_t len;
312 9468027b 2020-10-15 op switch (family) {
313 9468027b 2020-10-15 op case AF_INET:
314 9468027b 2020-10-15 op bzero(&addr4, sizeof(addr4));
315 9468027b 2020-10-15 op addr4.sin_family = family;
316 9468027b 2020-10-15 op addr4.sin_port = htons(port);
317 9468027b 2020-10-15 op addr4.sin_addr.s_addr = INADDR_ANY;
318 9468027b 2020-10-15 op addr = (struct sockaddr*)&addr4;
319 9468027b 2020-10-15 op len = sizeof(addr4);
322 9468027b 2020-10-15 op case AF_INET6:
323 9468027b 2020-10-15 op bzero(&addr6, sizeof(addr6));
324 9468027b 2020-10-15 op addr6.sin6_family = AF_INET6;
325 9468027b 2020-10-15 op addr6.sin6_port = htons(port);
326 9468027b 2020-10-15 op addr6.sin6_addr = in6addr_any;
327 9468027b 2020-10-15 op addr = (struct sockaddr*)&addr6;
328 9468027b 2020-10-15 op len = sizeof(addr6);
332 9468027b 2020-10-15 op /* unreachable */
336 9468027b 2020-10-15 op if ((sock = socket(family, SOCK_STREAM, 0)) == -1)
337 80bbcad5 2021-01-10 op fatal("socket: %s", strerror(errno));
340 3e4749f7 2020-10-02 op if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &v, sizeof(v)) == -1)
341 80bbcad5 2021-01-10 op fatal("setsockopt(SO_REUSEADDR): %s", strerror(errno));
344 3e4749f7 2020-10-02 op if (setsockopt(sock, SOL_SOCKET, SO_REUSEPORT, &v, sizeof(v)) == -1)
345 80bbcad5 2021-01-10 op fatal("setsockopt(SO_REUSEPORT): %s", strerror(errno));
347 592fd624 2020-10-07 op mark_nonblock(sock);
349 9468027b 2020-10-15 op if (bind(sock, addr, len) == -1)
350 80bbcad5 2021-01-10 op fatal("bind: %s", strerror(errno));
352 3e4749f7 2020-10-02 op if (listen(sock, 16) == -1)
353 80bbcad5 2021-01-10 op fatal("listen: %s", strerror(errno));
359 ae08ec7d 2021-01-25 op setup_tls(void)
361 ae08ec7d 2021-01-25 op struct vhost *h;
363 881a9dd9 2021-01-16 op if ((tlsconf = tls_config_new()) == NULL)
364 132cae8c 2021-01-18 op fatal("tls_config_new");
366 881a9dd9 2021-01-16 op /* optionally accept client certs, but don't try to verify them */
367 881a9dd9 2021-01-16 op tls_config_verify_client_optional(tlsconf);
368 881a9dd9 2021-01-16 op tls_config_insecure_noverifycert(tlsconf);
370 881a9dd9 2021-01-16 op if (tls_config_set_protocols(tlsconf, conf.protos) == -1)
371 132cae8c 2021-01-18 op fatal("tls_config_set_protocols");
373 881a9dd9 2021-01-16 op if ((ctx = tls_server()) == NULL)
374 132cae8c 2021-01-18 op fatal("tls_server failure");
376 ae08ec7d 2021-01-25 op /* we need to set something, then we can add how many key we want */
377 ae08ec7d 2021-01-25 op if (tls_config_set_keypair_file(tlsconf, hosts->cert, hosts->key))
378 ca21e100 2021-02-04 op fatal("tls_config_set_keypair_file failed for (%s, %s)",
379 ca21e100 2021-02-04 op hosts->cert, hosts->key);
381 8443bff7 2021-01-25 op for (h = &hosts[1]; h->domain != NULL; ++h) {
382 ae08ec7d 2021-01-25 op if (tls_config_add_keypair_file(tlsconf, h->cert, h->key) == -1)
383 ae08ec7d 2021-01-25 op fatal("failed to load the keypair (%s, %s)",
384 ae08ec7d 2021-01-25 op h->cert, h->key);
387 881a9dd9 2021-01-16 op if (tls_configure(ctx, tlsconf) == -1)
388 132cae8c 2021-01-18 op fatal("tls_configure: %s", tls_error(ctx));
392 ae08ec7d 2021-01-25 op listener_main(void)
394 ae08ec7d 2021-01-25 op load_default_mime(&conf.mime);
395 ae08ec7d 2021-01-25 op load_vhosts();
397 881a9dd9 2021-01-16 op loop(ctx, sock4, sock6);
402 8d6ae384 2021-01-24 op init_config(void)
406 15902770 2021-01-15 op bzero(hosts, sizeof(hosts));
407 15902770 2021-01-15 op for (i = 0; i < HOSTSLEN; ++i)
408 15902770 2021-01-15 op hosts[i].dirfd = -1;
410 15902770 2021-01-15 op conf.port = 1965;
411 15902770 2021-01-15 op conf.ipv6 = 0;
412 5bc3c98e 2021-01-15 op conf.protos = TLS_PROTOCOL_TLSv1_2 | TLS_PROTOCOL_TLSv1_3;
414 b2a6b613 2021-01-21 op init_mime(&conf.mime);
416 ae08ec7d 2021-01-25 op conf.chroot = NULL;
417 ae08ec7d 2021-01-25 op conf.user = NULL;
421 ca21e100 2021-02-04 op free_config(void)
423 ca21e100 2021-02-04 op struct vhost *h;
424 ca21e100 2021-02-04 op struct location *l;
426 ca21e100 2021-02-04 op free(conf.chroot);
427 ca21e100 2021-02-04 op free(conf.user);
428 ca21e100 2021-02-04 op memset(&conf, 0, sizeof(conf));
430 ca21e100 2021-02-04 op for (h = hosts; h->domain != NULL; ++h) {
431 ca21e100 2021-02-04 op free((char*)h->domain);
432 ca21e100 2021-02-04 op free((char*)h->cert);
433 ca21e100 2021-02-04 op free((char*)h->key);
434 ca21e100 2021-02-04 op free((char*)h->dir);
435 ca21e100 2021-02-04 op free((char*)h->cgi);
436 e3ddf390 2021-02-06 op free((char*)h->entrypoint);
438 ca21e100 2021-02-04 op for (l = h->locations; l->match != NULL; ++l) {
439 ca21e100 2021-02-04 op free((char*)l->match);
440 ca21e100 2021-02-04 op free((char*)l->lang);
441 ca21e100 2021-02-04 op free((char*)l->default_mime);
442 ca21e100 2021-02-04 op free((char*)l->index);
443 6abda252 2021-02-06 op free((char*)l->block_fmt);
446 ca21e100 2021-02-04 op memset(hosts, 0, sizeof(hosts));
448 ca21e100 2021-02-04 op tls_free(ctx);
449 ca21e100 2021-02-04 op tls_config_free(tlsconf);
453 ca21e100 2021-02-04 op wait_sighup(void)
455 ca21e100 2021-02-04 op sigset_t mask;
458 ca21e100 2021-02-04 op sigemptyset(&mask);
459 ca21e100 2021-02-04 op sigaddset(&mask, SIGHUP);
460 ca21e100 2021-02-04 op sigwait(&mask, &signo);
464 ae08ec7d 2021-01-25 op drop_priv(void)
466 ae08ec7d 2021-01-25 op struct passwd *pw = NULL;
468 ae08ec7d 2021-01-25 op if (conf.chroot != NULL && conf.user == NULL)
469 ae08ec7d 2021-01-25 op fatal("can't chroot without an user to switch to after.");
471 ae08ec7d 2021-01-25 op if (conf.user != NULL) {
472 ae08ec7d 2021-01-25 op if ((pw = getpwnam(conf.user)) == NULL)
473 ae08ec7d 2021-01-25 op fatal("can't find user %s", conf.user);
476 ae08ec7d 2021-01-25 op if (conf.chroot != NULL) {
477 ae08ec7d 2021-01-25 op if (chroot(conf.chroot) != 0 || chdir("/") != 0)
478 ae08ec7d 2021-01-25 op fatal("%s: %s", conf.chroot, strerror(errno));
481 ae08ec7d 2021-01-25 op if (pw != NULL) {
482 ae08ec7d 2021-01-25 op if (setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid) == -1)
483 ae08ec7d 2021-01-25 op fatal("setresuid(%d): %s", pw->pw_uid,
484 ae08ec7d 2021-01-25 op strerror(errno));
487 ae08ec7d 2021-01-25 op if (getuid() == 0)
488 ae08ec7d 2021-01-25 op LOGW(NULL, "%s",
489 ae08ec7d 2021-01-25 op "not a good idea to run a network daemon as root");
493 2030e314 2021-01-25 op usage(const char *me)
495 2030e314 2021-01-25 op fprintf(stderr,
496 46af8c6c 2021-01-27 op "USAGE: %s [-fn] [-c config] | [-6h] [-d certs-dir] [-H host]"
497 8443bff7 2021-01-25 op " [-p port] [-x cgi] [dir]",
502 d672b8fb 2021-02-03 op serve(int argc, char **argv, int *p)
504 d672b8fb 2021-02-03 op char path[PATH_MAX];
506 d672b8fb 2021-02-03 op if (config_path == NULL) {
507 d672b8fb 2021-02-03 op if (hostname == NULL)
508 d672b8fb 2021-02-03 op hostname = "localhost";
509 d672b8fb 2021-02-03 op if (certs_dir == NULL)
510 d672b8fb 2021-02-03 op certs_dir = data_dir();
511 d672b8fb 2021-02-03 op load_local_cert(hostname, certs_dir);
513 d672b8fb 2021-02-03 op hosts[0].domain = "*";
514 d672b8fb 2021-02-03 op hosts[0].locations[0].auto_index = 1;
515 d672b8fb 2021-02-03 op hosts[0].locations[0].match = "*";
517 d672b8fb 2021-02-03 op switch (argc) {
519 d672b8fb 2021-02-03 op hosts[0].dir = getcwd(path, sizeof(path));
522 d672b8fb 2021-02-03 op hosts[0].dir = absolutify_path(argv[0]);
525 d672b8fb 2021-02-03 op usage(getprogname());
529 d672b8fb 2021-02-03 op LOGN(NULL, "serving %s on port %d", hosts[0].dir, conf.port);
532 d672b8fb 2021-02-03 op /* setup tls before dropping privileges: we don't want user
533 d672b8fb 2021-02-03 op * to put private certs inside the chroot. */
536 d672b8fb 2021-02-03 op switch (fork()) {
538 d672b8fb 2021-02-03 op fatal("fork: %s", strerror(errno));
540 d672b8fb 2021-02-03 op case 0: /* child */
541 ca21e100 2021-02-04 op setproctitle("listener");
545 ca21e100 2021-02-04 op unblock_signals();
546 d672b8fb 2021-02-03 op listener_main();
549 d672b8fb 2021-02-03 op default: /* parent */
550 ca21e100 2021-02-04 op setproctitle("executor");
554 ca21e100 2021-02-04 op unblock_signals();
555 4e2e2ab1 2021-02-03 op return executor_main();
560 8d6ae384 2021-01-24 op main(int argc, char **argv)
562 8d6ae384 2021-01-24 op int ch, p[2];
563 8443bff7 2021-01-25 op int conftest = 0, configless = 0;
564 ca21e100 2021-02-04 op int old_ipv6, old_port;
566 501e489c 2021-01-24 op init_config();
568 8904fa0e 2021-01-27 op while ((ch = getopt(argc, argv, "6c:d:fH:hnp:vx:")) != -1) {
569 3e4749f7 2020-10-02 op switch (ch) {
571 15902770 2021-01-15 op conf.ipv6 = 1;
572 8443bff7 2021-01-25 op configless = 1;
576 ca21e100 2021-02-04 op config_path = absolutify_path(optarg);
580 8443bff7 2021-01-25 op certs_dir = optarg;
581 8443bff7 2021-01-25 op configless = 1;
585 46af8c6c 2021-01-27 op foreground = 1;
589 8443bff7 2021-01-25 op hostname = optarg;
590 8443bff7 2021-01-25 op configless = 1;
594 3e4749f7 2020-10-02 op usage(*argv);
598 15902770 2021-01-15 op conftest = 1;
602 15902770 2021-01-15 op conf.port = parse_portno(optarg);
603 8443bff7 2021-01-25 op configless = 1;
611 15902770 2021-01-15 op /* drop the starting / (if any) */
612 15902770 2021-01-15 op if (*optarg == '/')
614 15902770 2021-01-15 op hosts[0].cgi = optarg;
615 8443bff7 2021-01-25 op configless = 1;
619 3e4749f7 2020-10-02 op usage(*argv);
623 8443bff7 2021-01-25 op argc -= optind;
624 8443bff7 2021-01-25 op argv += optind;
626 d672b8fb 2021-02-03 op if (config_path == NULL) {
627 72bbed91 2021-01-27 op configless = 1;
628 72bbed91 2021-01-27 op foreground = 1;
631 d672b8fb 2021-02-03 op if (config_path != NULL && (argc > 0 || configless))
632 d672b8fb 2021-02-03 op err(1, "can't specify options in config mode.");
634 132cae8c 2021-01-18 op if (conftest) {
635 d672b8fb 2021-02-03 op parse_conf(config_path);
636 132cae8c 2021-01-18 op puts("config OK");
640 4a28dd01 2020-12-28 op signal(SIGPIPE, SIG_IGN);
641 4a28dd01 2020-12-28 op signal(SIGCHLD, SIG_IGN);
643 4a28dd01 2020-12-28 op #ifdef SIGINFO
644 4a28dd01 2020-12-28 op signal(SIGINFO, sig_handler);
646 4a28dd01 2020-12-28 op signal(SIGUSR2, sig_handler);
647 ca21e100 2021-02-04 op signal(SIGHUP, sig_handler);
649 46af8c6c 2021-01-27 op if (!foreground && !configless) {
650 0170ba02 2021-01-17 op if (daemon(1, 1) == -1)
651 132cae8c 2021-01-18 op fatal("daemon: %s", strerror(errno));
654 8503a143 2021-01-31 op if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC,
655 8503a143 2021-01-31 op PF_UNSPEC, p) == -1)
656 881a9dd9 2021-01-16 op fatal("socketpair: %s", strerror(errno));
658 d672b8fb 2021-02-03 op if (config_path != NULL)
659 d672b8fb 2021-02-03 op parse_conf(config_path);
661 d672b8fb 2021-02-03 op sock4 = make_socket(conf.port, AF_INET);
663 d672b8fb 2021-02-03 op if (conf.ipv6)
664 d672b8fb 2021-02-03 op sock6 = make_socket(conf.port, AF_INET6);
666 ca21e100 2021-02-04 op if (configless)
667 ca21e100 2021-02-04 op return serve(argc, argv, p);
669 ca21e100 2021-02-04 op /* wait a sighup and reload the daemon */
671 ca21e100 2021-02-04 op block_signals();
674 ca21e100 2021-02-04 op switch (fork()) {
676 ca21e100 2021-02-04 op fatal("fork: %s", strerror(errno));
678 ca21e100 2021-02-04 op return serve(argc, argv, p);
684 ca21e100 2021-02-04 op wait_sighup();
685 9543e3fb 2021-02-04 op unblock_signals();
686 102d2e9c 2021-02-04 op LOGI(NULL, "reloading configuration %s", config_path);
688 ca21e100 2021-02-04 op old_ipv6 = conf.ipv6;
689 ca21e100 2021-02-04 op old_port = conf.port;
691 ca21e100 2021-02-04 op free_config();
692 ca21e100 2021-02-04 op init_config();
693 ca21e100 2021-02-04 op parse_conf(config_path);
695 ca21e100 2021-02-04 op if (old_port != conf.port) {
696 ca21e100 2021-02-04 op close(sock4);
697 ca21e100 2021-02-04 op close(sock6);
702 ca21e100 2021-02-04 op if (sock6 != -1 && old_ipv6 != conf.ipv6) {
703 ca21e100 2021-02-04 op close(sock6);
707 ca21e100 2021-02-04 op if (sock4 == -1)
708 ca21e100 2021-02-04 op sock4 = make_socket(conf.port, AF_INET);
709 ca21e100 2021-02-04 op if (sock6 == -1 && conf.ipv6)
710 ca21e100 2021-02-04 op sock6 = make_socket(conf.port, AF_INET6);
712 ca21e100 2021-02-04 op if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC,
713 ca21e100 2021-02-04 op PF_UNSPEC, p) == -1)
714 ca21e100 2021-02-04 op fatal("socketpair: %s", strerror(errno));