2 a555e0d6 2022-07-04 op * Copyright (c) 2021, 2022 Omar Polo <op@omarpolo.com>
4 d3a08f4d 2021-01-17 op * Permission to use, copy, modify, and distribute this software for any
5 d3a08f4d 2021-01-17 op * purpose with or without fee is hereby granted, provided that the above
6 d3a08f4d 2021-01-17 op * copyright notice and this permission notice appear in all copies.
8 d3a08f4d 2021-01-17 op * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 d3a08f4d 2021-01-17 op * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 d3a08f4d 2021-01-17 op * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 d3a08f4d 2021-01-17 op * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 d3a08f4d 2021-01-17 op * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 d3a08f4d 2021-01-17 op * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 d3a08f4d 2021-01-17 op * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 52418c8d 2021-02-12 op #include "gmid.h"
19 d3a08f4d 2021-01-17 op #include <sys/stat.h>
20 d29a2ee2 2022-09-06 op #include <sys/un.h>
22 d3a08f4d 2021-01-17 op #include <assert.h>
23 efe7d180 2021-10-02 op #include <ctype.h>
24 d3a08f4d 2021-01-17 op #include <errno.h>
25 abc007d2 2021-02-08 op #include <event.h>
26 d3a08f4d 2021-01-17 op #include <fcntl.h>
27 b4d409cf 2021-01-21 op #include <fnmatch.h>
28 2fafa2d2 2021-02-01 op #include <limits.h>
29 d3a08f4d 2021-01-17 op #include <string.h>
31 df5058c9 2023-06-05 op #include "log.h"
33 efe7d180 2021-10-02 op #define MIN(a, b) ((a) < (b) ? (a) : (b))
35 090b8a89 2021-07-06 op int shutting_down;
37 bc99d868 2021-03-19 op static struct tls *ctx;
39 bc99d868 2021-03-19 op static struct event e4, e6, imsgev, siginfo, sigusr2;
40 6b191ed5 2021-02-23 op static int has_ipv6, has_siginfo;
42 d3a08f4d 2021-01-17 op int connected_clients;
44 49b73ba1 2021-02-10 op static inline int matches(const char*, const char*);
46 fe406389 2021-02-02 op static int check_path(struct client*, const char*, int*);
47 abc007d2 2021-02-08 op static void open_file(struct client*);
48 abc007d2 2021-02-08 op static void handle_handshake(int, short, void*);
49 91b9f2a8 2021-05-15 op static const char *strip_path(const char*, int);
50 57ec3e77 2021-02-08 op static void fmt_sbuf(const char*, struct client*, const char*);
51 abc007d2 2021-02-08 op static int apply_block_return(struct client*);
52 d474a979 2022-01-04 op static int check_matching_certificate(X509_STORE *, struct client *);
53 72b033ef 2021-12-29 op static int apply_reverse_proxy(struct client *);
54 efe7d180 2021-10-02 op static int apply_fastcgi(struct client*);
55 02be96c6 2021-02-09 op static int apply_require_ca(struct client*);
56 abc007d2 2021-02-08 op static void open_dir(struct client*);
57 abc007d2 2021-02-08 op static void redirect_canonical_dir(struct client*);
59 efe7d180 2021-10-02 op static void client_tls_readcb(int, short, void *);
60 efe7d180 2021-10-02 op static void client_tls_writecb(int, short, void *);
62 efe7d180 2021-10-02 op static void client_read(struct bufferevent *, void *);
63 efe7d180 2021-10-02 op void client_write(struct bufferevent *, void *);
64 efe7d180 2021-10-02 op static void client_error(struct bufferevent *, short, void *);
66 efe7d180 2021-10-02 op static void client_close_ev(int, short, void *);
68 abc007d2 2021-02-08 op static void do_accept(int, short, void*);
70 efe7d180 2021-10-02 op static void handle_dispatch_imsg(int, short, void *);
71 bc99d868 2021-03-19 op static void handle_siginfo(int, short, void*);
73 207b3e80 2021-10-07 op static uint32_t server_client_id;
75 207b3e80 2021-10-07 op struct client_tree_id clients;
77 49b73ba1 2021-02-10 op static inline int
78 49b73ba1 2021-02-10 op matches(const char *pattern, const char *path)
80 49b73ba1 2021-02-10 op if (*path == '/')
82 49b73ba1 2021-02-10 op return !fnmatch(pattern, path, 0);
86 c8b74339 2021-01-24 op vhost_lang(struct vhost *v, const char *path)
88 c8b74339 2021-01-24 op struct location *loc;
90 caad0308 2021-01-27 op if (v == NULL || path == NULL)
93 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
94 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
95 534afd0d 2022-10-05 op if (*loc->lang != '\0') {
96 49b73ba1 2021-02-10 op if (matches(loc->match, path))
97 6016a593 2021-01-30 op return loc->lang;
101 534afd0d 2022-10-05 op loc = TAILQ_FIRST(&v->locations);
102 534afd0d 2022-10-05 op if (*loc->lang == '\0')
104 534afd0d 2022-10-05 op return loc->lang;
108 c8b74339 2021-01-24 op vhost_default_mime(struct vhost *v, const char *path)
110 c8b74339 2021-01-24 op struct location *loc;
111 c8b74339 2021-01-24 op const char *default_mime = "application/octet-stream";
113 caad0308 2021-01-27 op if (v == NULL || path == NULL)
114 caad0308 2021-01-27 op return default_mime;
116 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
117 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
118 534afd0d 2022-10-05 op if (*loc->default_mime != '\0') {
119 49b73ba1 2021-02-10 op if (matches(loc->match, path))
120 6016a593 2021-01-30 op return loc->default_mime;
124 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
125 534afd0d 2022-10-05 op if (*loc->default_mime != '\0')
126 b8e64ccd 2021-03-31 op return loc->default_mime;
127 c8b74339 2021-01-24 op return default_mime;
131 c8b74339 2021-01-24 op vhost_index(struct vhost *v, const char *path)
133 c8b74339 2021-01-24 op struct location *loc;
134 c8b74339 2021-01-24 op const char *index = "index.gmi";
136 caad0308 2021-01-27 op if (v == NULL || path == NULL)
137 caad0308 2021-01-27 op return index;
139 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
140 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
141 534afd0d 2022-10-05 op if (*loc->index != '\0') {
142 49b73ba1 2021-02-10 op if (matches(loc->match, path))
143 6016a593 2021-01-30 op return loc->index;
147 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
148 534afd0d 2022-10-05 op if (*loc->index != '\0')
149 b8e64ccd 2021-03-31 op return loc->index;
150 c8b74339 2021-01-24 op return index;
154 252908e6 2021-01-24 op vhost_auto_index(struct vhost *v, const char *path)
156 252908e6 2021-01-24 op struct location *loc;
158 6016a593 2021-01-30 op if (v == NULL || path == NULL)
161 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
162 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
163 cd761624 2021-02-06 op if (loc->auto_index != 0) {
164 49b73ba1 2021-02-10 op if (matches(loc->match, path))
165 6016a593 2021-01-30 op return loc->auto_index == 1;
169 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
170 b8e64ccd 2021-03-31 op return loc->auto_index == 1;
174 6abda252 2021-02-06 op vhost_block_return(struct vhost *v, const char *path, int *code, const char **fmt)
176 6abda252 2021-02-06 op struct location *loc;
178 6abda252 2021-02-06 op if (v == NULL || path == NULL)
181 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
182 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
183 cd761624 2021-02-06 op if (loc->block_code != 0) {
184 49b73ba1 2021-02-10 op if (matches(loc->match, path)) {
185 6abda252 2021-02-06 op *code = loc->block_code;
186 6abda252 2021-02-06 op *fmt = loc->block_fmt;
192 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
193 b8e64ccd 2021-03-31 op *code = loc->block_code;
194 b8e64ccd 2021-03-31 op *fmt = loc->block_fmt;
195 b8e64ccd 2021-03-31 op return loc->block_code != 0;
199 8ad1c570 2021-05-09 op vhost_fastcgi(struct vhost *v, const char *path)
201 8ad1c570 2021-05-09 op struct location *loc;
203 8ad1c570 2021-05-09 op if (v == NULL || path == NULL)
206 8ad1c570 2021-05-09 op loc = TAILQ_FIRST(&v->locations);
207 8ad1c570 2021-05-09 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
208 8ad1c570 2021-05-09 op if (loc->fcgi != -1)
209 8ad1c570 2021-05-09 op if (matches(loc->match, path))
210 8ad1c570 2021-05-09 op return loc->fcgi;
213 8ad1c570 2021-05-09 op loc = TAILQ_FIRST(&v->locations);
214 8ad1c570 2021-05-09 op return loc->fcgi;
218 1feaf2a6 2021-05-15 op vhost_dirfd(struct vhost *v, const char *path, size_t *retloc)
220 fdea6aa0 2021-04-30 op struct location *loc;
221 1feaf2a6 2021-05-15 op size_t l = 0;
223 fdea6aa0 2021-04-30 op if (v == NULL || path == NULL)
226 fdea6aa0 2021-04-30 op loc = TAILQ_FIRST(&v->locations);
227 fdea6aa0 2021-04-30 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
229 fdea6aa0 2021-04-30 op if (loc->dirfd != -1)
230 1feaf2a6 2021-05-15 op if (matches(loc->match, path)) {
232 fdea6aa0 2021-04-30 op return loc->dirfd;
237 fdea6aa0 2021-04-30 op loc = TAILQ_FIRST(&v->locations);
238 fdea6aa0 2021-04-30 op return loc->dirfd;
242 6abda252 2021-02-06 op vhost_strip(struct vhost *v, const char *path)
244 6abda252 2021-02-06 op struct location *loc;
246 6abda252 2021-02-06 op if (v == NULL || path == NULL)
249 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
250 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
251 cd761624 2021-02-06 op if (loc->strip != 0) {
252 49b73ba1 2021-02-10 op if (matches(loc->match, path))
253 6abda252 2021-02-06 op return loc->strip;
257 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
258 b8e64ccd 2021-03-31 op return loc->strip;
262 02be96c6 2021-02-09 op vhost_require_ca(struct vhost *v, const char *path)
264 02be96c6 2021-02-09 op struct location *loc;
266 02be96c6 2021-02-09 op if (v == NULL || path == NULL)
269 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
270 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
271 02be96c6 2021-02-09 op if (loc->reqca != NULL) {
272 49b73ba1 2021-02-10 op if (matches(loc->match, path))
273 02be96c6 2021-02-09 op return loc->reqca;
277 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
278 b8e64ccd 2021-03-31 op return loc->reqca;
282 793835cb 2021-02-23 op vhost_disable_log(struct vhost *v, const char *path)
284 793835cb 2021-02-23 op struct location *loc;
286 793835cb 2021-02-23 op if (v == NULL || path == NULL)
289 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
290 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
291 793835cb 2021-02-23 op if (loc->disable_log && matches(loc->match, path))
295 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
296 b8e64ccd 2021-03-31 op return loc->disable_log;
300 d3a08f4d 2021-01-17 op check_path(struct client *c, const char *path, int *fd)
302 d3a08f4d 2021-01-17 op struct stat sb;
303 d1ca3911 2021-01-21 op const char *p;
304 efb48052 2021-07-27 op int dirfd, strip;
306 d3a08f4d 2021-01-17 op assert(path != NULL);
309 fdea6aa0 2021-04-30 op * in send_dir we add an initial / (to be redirect-friendly),
310 fdea6aa0 2021-04-30 op * but here we want to skip it
312 fdea6aa0 2021-04-30 op if (*path == '/')
315 fdea6aa0 2021-04-30 op strip = vhost_strip(c->host, path);
316 fdea6aa0 2021-04-30 op p = strip_path(path, strip);
318 fdea6aa0 2021-04-30 op if (*p == '/')
320 fdea6aa0 2021-04-30 op if (*p == '\0')
323 1feaf2a6 2021-05-15 op dirfd = vhost_dirfd(c->host, path, &c->loc);
324 fdea6aa0 2021-04-30 op log_debug(c, "check_path: strip=%d path=%s original=%s",
325 fdea6aa0 2021-04-30 op strip, p, path);
326 3bd4a6de 2022-07-04 op if (*fd == -1 && (*fd = openat(dirfd, p, O_RDONLY)) == -1) {
327 3bd4a6de 2022-07-04 op if (errno == EACCES)
328 3bd4a6de 2022-07-04 op log_info(c, "can't open %s: %s", p, strerror(errno));
329 d3a08f4d 2021-01-17 op return FILE_MISSING;
332 d3a08f4d 2021-01-17 op if (fstat(*fd, &sb) == -1) {
333 3abf91b0 2021-02-07 op log_notice(c, "failed stat for %s: %s", path, strerror(errno));
334 d3a08f4d 2021-01-17 op return FILE_MISSING;
337 d3a08f4d 2021-01-17 op if (S_ISDIR(sb.st_mode))
338 d3a08f4d 2021-01-17 op return FILE_DIRECTORY;
340 d3a08f4d 2021-01-17 op return FILE_EXISTS;
344 abc007d2 2021-02-08 op open_file(struct client *c)
346 abc007d2 2021-02-08 op switch (check_path(c, c->iri.path, &c->pfd)) {
347 d3a08f4d 2021-01-17 op case FILE_EXISTS:
348 efe7d180 2021-10-02 op c->type = REQUEST_FILE;
349 27b2fa9a 2021-02-12 op start_reply(c, SUCCESS, mime(c->host, c->iri.path));
352 d3a08f4d 2021-01-17 op case FILE_DIRECTORY:
356 d3a08f4d 2021-01-17 op case FILE_MISSING:
357 abc007d2 2021-02-08 op start_reply(c, NOT_FOUND, "not found");
361 d3a08f4d 2021-01-17 op /* unreachable */
367 9b8f5ed2 2021-02-03 op mark_nonblock(int fd)
371 9b8f5ed2 2021-02-03 op if ((flags = fcntl(fd, F_GETFL)) == -1)
372 df5058c9 2023-06-05 op fatal("fcntl(F_GETFL)");
373 9b8f5ed2 2021-02-03 op if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1)
374 df5058c9 2023-06-05 op fatal("fcntl(F_SETFL)");
378 abc007d2 2021-02-08 op handle_handshake(int fd, short ev, void *d)
380 abc007d2 2021-02-08 op struct client *c = d;
381 d3a08f4d 2021-01-17 op struct vhost *h;
382 cc8c2901 2021-04-29 op struct alist *a;
383 d3a08f4d 2021-01-17 op const char *servname;
384 a8d4a897 2021-01-29 op const char *parse_err = "unknown error";
386 d3a08f4d 2021-01-17 op switch (tls_handshake(c->ctx)) {
387 d3a08f4d 2021-01-17 op case 0: /* success */
388 d3a08f4d 2021-01-17 op case -1: /* already handshaked */
390 d3a08f4d 2021-01-17 op case TLS_WANT_POLLIN:
391 efe7d180 2021-10-02 op event_once(c->fd, EV_READ, handle_handshake, c, NULL);
393 d3a08f4d 2021-01-17 op case TLS_WANT_POLLOUT:
394 efe7d180 2021-10-02 op event_once(c->fd, EV_WRITE, handle_handshake, c, NULL);
397 d3a08f4d 2021-01-17 op /* unreachable */
401 80444938 2021-10-15 op c->bev = bufferevent_new(fd, client_read, client_write,
402 80444938 2021-10-15 op client_error, c);
403 80444938 2021-10-15 op if (c->bev == NULL)
404 df5058c9 2023-06-05 op fatal("%s: failed to allocate client buffer", __func__);
406 80444938 2021-10-15 op event_set(&c->bev->ev_read, c->fd, EV_READ,
407 80444938 2021-10-15 op client_tls_readcb, c->bev);
408 80444938 2021-10-15 op event_set(&c->bev->ev_write, c->fd, EV_WRITE,
409 80444938 2021-10-15 op client_tls_writecb, c->bev);
411 80444938 2021-10-15 op #if HAVE_LIBEVENT2
412 80444938 2021-10-15 op evbuffer_unfreeze(c->bev->input, 0);
413 80444938 2021-10-15 op evbuffer_unfreeze(c->bev->output, 1);
416 79288c8b 2021-09-24 op if ((servname = tls_conn_servername(c->ctx)) == NULL) {
417 79288c8b 2021-09-24 op log_debug(c, "handshake: missing SNI");
421 a8d4a897 2021-01-29 op if (!puny_decode(servname, c->domain, sizeof(c->domain), &parse_err)) {
422 3abf91b0 2021-02-07 op log_info(c, "puny_decode: %s", parse_err);
426 b8e64ccd 2021-03-31 op TAILQ_FOREACH(h, &hosts, vhosts) {
427 eecad7a3 2021-02-12 op if (matches(h->domain, c->domain))
429 cc8c2901 2021-04-29 op TAILQ_FOREACH(a, &h->aliases, aliases) {
430 cc8c2901 2021-04-29 op if (matches(a->alias, c->domain))
436 3abf91b0 2021-02-07 op log_debug(c, "handshake: SNI: \"%s\"; decoded: \"%s\"; matched: \"%s\"",
437 3abf91b0 2021-02-07 op servname != NULL ? servname : "(null)",
439 b8e64ccd 2021-03-31 op h != NULL ? h->domain : "(null)");
441 b8e64ccd 2021-03-31 op if (h != NULL) {
443 efe7d180 2021-10-02 op bufferevent_enable(c->bev, EV_READ);
448 abc007d2 2021-02-08 op start_reply(c, BAD_REQUEST, "Wrong/malformed host or missing SNI");
451 91b9f2a8 2021-05-15 op static const char *
452 91b9f2a8 2021-05-15 op strip_path(const char *path, int strip)
456 6abda252 2021-02-06 op while (strip > 0) {
457 6abda252 2021-02-06 op if ((t = strchr(path, '/')) == NULL) {
458 6abda252 2021-02-06 op path = strchr(path, '\0');
469 57ec3e77 2021-02-08 op fmt_sbuf(const char *fmt, struct client *c, const char *path)
472 4842c72d 2021-10-18 op char buf[32];
474 6abda252 2021-02-06 op memset(buf, 0, sizeof(buf));
475 6abda252 2021-02-06 op for (i = 0; *fmt; ++fmt) {
476 6abda252 2021-02-06 op if (i == sizeof(buf)-1 || *fmt == '%') {
477 6abda252 2021-02-06 op strlcat(c->sbuf, buf, sizeof(c->sbuf));
478 6abda252 2021-02-06 op memset(buf, 0, sizeof(buf));
482 6abda252 2021-02-06 op if (*fmt != '%') {
483 6abda252 2021-02-06 op buf[i++] = *fmt;
487 6abda252 2021-02-06 op switch (*++fmt) {
489 6abda252 2021-02-06 op strlcat(c->sbuf, "%", sizeof(c->sbuf));
492 737a6b50 2021-04-30 op if (*path != '/')
493 737a6b50 2021-04-30 op strlcat(c->sbuf, "/", sizeof(c->sbuf));
494 6abda252 2021-02-06 op strlcat(c->sbuf, path, sizeof(c->sbuf));
497 6abda252 2021-02-06 op strlcat(c->sbuf, c->iri.query, sizeof(c->sbuf));
500 6abda252 2021-02-06 op snprintf(buf, sizeof(buf), "%d", conf.port);
501 6abda252 2021-02-06 op strlcat(c->sbuf, buf, sizeof(c->sbuf));
502 6abda252 2021-02-06 op memset(buf, 0, sizeof(buf));
505 6abda252 2021-02-06 op strlcat(c->sbuf, c->domain, sizeof(c->sbuf));
508 df5058c9 2023-06-05 op fatalx("%s: unknown fmt specifier %c",
509 6abda252 2021-02-06 op __func__, *fmt);
514 6abda252 2021-02-06 op strlcat(c->sbuf, buf, sizeof(c->sbuf));
517 57ec3e77 2021-02-08 op /* 1 if a matching `block return' (and apply it), 0 otherwise */
519 57ec3e77 2021-02-08 op apply_block_return(struct client *c)
521 57ec3e77 2021-02-08 op const char *fmt, *path;
524 57ec3e77 2021-02-08 op if (!vhost_block_return(c->host, c->iri.path, &code, &fmt))
527 57ec3e77 2021-02-08 op path = strip_path(c->iri.path, vhost_strip(c->host, c->iri.path));
528 57ec3e77 2021-02-08 op fmt_sbuf(fmt, c, path);
530 abc007d2 2021-02-08 op start_reply(c, code, c->sbuf);
534 b7967bc1 2021-01-02 op static struct proxy *
535 b7967bc1 2021-01-02 op matched_proxy(struct client *c)
537 b7967bc1 2021-01-02 op struct proxy *p;
538 b7967bc1 2021-01-02 op const char *proto;
539 b7967bc1 2021-01-02 op const char *host;
540 b7967bc1 2021-01-02 op const char *port;
542 b7967bc1 2021-01-02 op TAILQ_FOREACH(p, &c->host->proxies, proxies) {
543 534afd0d 2022-10-05 op if (*(proto = p->match_proto) == '\0')
544 b7967bc1 2021-01-02 op proto = "gemini";
545 534afd0d 2022-10-05 op if (*(host = p->match_host) == '\0')
547 534afd0d 2022-10-05 op if (*(port = p->match_port) == '\0')
550 b7967bc1 2021-01-02 op if (matches(proto, c->iri.schema) &&
551 b7967bc1 2021-01-02 op matches(host, c->domain) &&
552 b7967bc1 2021-01-02 op matches(port, c->iri.port))
560 ba94a608 2022-01-04 op check_matching_certificate(X509_STORE *store, struct client *c)
562 ba94a608 2022-01-04 op const uint8_t *cert;
565 ba94a608 2022-01-04 op if (!tls_peer_cert_provided(c->ctx)) {
566 ba94a608 2022-01-04 op start_reply(c, CLIENT_CERT_REQ, "client certificate required");
570 ba94a608 2022-01-04 op cert = tls_peer_cert_chain_pem(c->ctx, &len);
571 ba94a608 2022-01-04 op if (!validate_against_ca(store, cert, len)) {
572 ba94a608 2022-01-04 op start_reply(c, CERT_NOT_AUTH, "certificate not authorised");
580 d29a2ee2 2022-09-06 op proxy_socket(struct client *c, const char *host, const char *port)
582 d29a2ee2 2022-09-06 op struct addrinfo hints, *res, *res0;
585 d29a2ee2 2022-09-06 op memset(&hints, 0, sizeof(hints));
586 d29a2ee2 2022-09-06 op hints.ai_family = AF_UNSPEC;
587 d29a2ee2 2022-09-06 op hints.ai_socktype = SOCK_STREAM;
589 d29a2ee2 2022-09-06 op /* XXX: asr_run? :> */
590 d29a2ee2 2022-09-06 op r = getaddrinfo(host, port, &hints, &res0);
591 d29a2ee2 2022-09-06 op if (r != 0) {
592 d29a2ee2 2022-09-06 op log_warn(c, "getaddrinfo(\"%s\", \"%s\"): %s",
593 d29a2ee2 2022-09-06 op host, port, gai_strerror(r));
597 d29a2ee2 2022-09-06 op for (res = res0; res; res = res->ai_next) {
598 d29a2ee2 2022-09-06 op sock = socket(res->ai_family, res->ai_socktype,
599 d29a2ee2 2022-09-06 op res->ai_protocol);
600 d29a2ee2 2022-09-06 op if (sock == -1)
603 d29a2ee2 2022-09-06 op if (connect(sock, res->ai_addr, res->ai_addrlen) == -1) {
612 d29a2ee2 2022-09-06 op freeaddrinfo(res0);
614 d29a2ee2 2022-09-06 op if (sock == -1)
615 d29a2ee2 2022-09-06 op log_warn(c, "can't connect to %s:%s", host, port);
620 72b033ef 2021-12-29 op /* 1 if matching a proxy relay-to (and apply it), 0 otherwise */
622 72b033ef 2021-12-29 op apply_reverse_proxy(struct client *c)
624 7bdcc91e 2021-01-01 op struct proxy *p;
626 b7967bc1 2021-01-02 op if ((p = matched_proxy(c)) == NULL)
629 b7967bc1 2021-01-02 op c->proxy = p;
631 ba94a608 2022-01-04 op if (p->reqca != NULL && check_matching_certificate(p->reqca, c))
634 72b033ef 2021-12-29 op log_debug(c, "opening proxy connection for %s:%s",
635 7bdcc91e 2021-01-01 op p->host, p->port);
637 d29a2ee2 2022-09-06 op if ((c->pfd = proxy_socket(c, p->host, p->port)) == -1) {
638 d29a2ee2 2022-09-06 op start_reply(c, PROXY_ERROR, "proxy error");
642 d29a2ee2 2022-09-06 op mark_nonblock(c->pfd);
643 d29a2ee2 2022-09-06 op if (proxy_init(c) == -1)
644 d29a2ee2 2022-09-06 op start_reply(c, PROXY_ERROR, "proxy error");
650 d29a2ee2 2022-09-06 op fcgi_open_sock(struct fcgi *f)
652 d29a2ee2 2022-09-06 op struct sockaddr_un addr;
655 d29a2ee2 2022-09-06 op if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
656 d29a2ee2 2022-09-06 op log_err(NULL, "socket: %s", strerror(errno));
660 d29a2ee2 2022-09-06 op memset(&addr, 0, sizeof(addr));
661 d29a2ee2 2022-09-06 op addr.sun_family = AF_UNIX;
662 d29a2ee2 2022-09-06 op strlcpy(addr.sun_path, f->path, sizeof(addr.sun_path));
664 d29a2ee2 2022-09-06 op if (connect(fd, (struct sockaddr*)&addr, sizeof(addr)) == -1) {
665 d29a2ee2 2022-09-06 op log_warn(NULL, "failed to connect to %s: %s", f->path,
666 d29a2ee2 2022-09-06 op strerror(errno));
675 d29a2ee2 2022-09-06 op fcgi_open_conn(struct fcgi *f)
677 d29a2ee2 2022-09-06 op struct addrinfo hints, *servinfo, *p;
680 d29a2ee2 2022-09-06 op memset(&hints, 0, sizeof(hints));
681 d29a2ee2 2022-09-06 op hints.ai_family = AF_UNSPEC;
682 d29a2ee2 2022-09-06 op hints.ai_socktype = SOCK_STREAM;
683 d29a2ee2 2022-09-06 op hints.ai_flags = AI_ADDRCONFIG;
685 d29a2ee2 2022-09-06 op if ((r = getaddrinfo(f->path, f->port, &hints, &servinfo)) != 0) {
686 d29a2ee2 2022-09-06 op log_warn(NULL, "getaddrinfo %s:%s: %s", f->path, f->port,
687 d29a2ee2 2022-09-06 op gai_strerror(r));
691 d29a2ee2 2022-09-06 op for (p = servinfo; p != NULL; p = p->ai_next) {
692 d29a2ee2 2022-09-06 op sock = socket(p->ai_family, p->ai_socktype, p->ai_protocol);
693 d29a2ee2 2022-09-06 op if (sock == -1)
695 d29a2ee2 2022-09-06 op if (connect(sock, p->ai_addr, p->ai_addrlen) == -1) {
702 d29a2ee2 2022-09-06 op if (p == NULL) {
703 d29a2ee2 2022-09-06 op log_warn(NULL, "couldn't connect to %s:%s", f->path, f->port);
707 d29a2ee2 2022-09-06 op freeaddrinfo(servinfo);
711 8ad1c570 2021-05-09 op /* 1 if matching `fcgi' (and apply it), 0 otherwise */
713 8ad1c570 2021-05-09 op apply_fastcgi(struct client *c)
716 8ad1c570 2021-05-09 op struct fcgi *f;
718 8ad1c570 2021-05-09 op if ((id = vhost_fastcgi(c->host, c->iri.path)) == -1)
721 4cd25209 2021-10-07 op f = &fcgi[id];
723 d29a2ee2 2022-09-06 op log_debug(c, "opening fastcgi connection for (%s,%s)",
724 d29a2ee2 2022-09-06 op f->path, f->port);
726 eb4f96c1 2022-11-27 op if (*f->port == '\0')
727 d29a2ee2 2022-09-06 op c->pfd = fcgi_open_sock(f);
729 d29a2ee2 2022-09-06 op c->pfd = fcgi_open_conn(f);
731 d29a2ee2 2022-09-06 op if (c->pfd == -1) {
732 d29a2ee2 2022-09-06 op start_reply(c, CGI_ERROR, "CGI error");
736 d29a2ee2 2022-09-06 op mark_nonblock(c->pfd);
738 d29a2ee2 2022-09-06 op c->cgibev = bufferevent_new(c->pfd, fcgi_read, fcgi_write,
739 d29a2ee2 2022-09-06 op fcgi_error, c);
740 d29a2ee2 2022-09-06 op if (c->cgibev == NULL) {
741 d29a2ee2 2022-09-06 op start_reply(c, TEMP_FAILURE, "internal server error");
745 d29a2ee2 2022-09-06 op bufferevent_enable(c->cgibev, EV_READ|EV_WRITE);
751 02be96c6 2021-02-09 op /* 1 if matching `require client ca' fails (and apply it), 0 otherwise */
753 02be96c6 2021-02-09 op apply_require_ca(struct client *c)
755 02be96c6 2021-02-09 op X509_STORE *store;
757 02be96c6 2021-02-09 op if ((store = vhost_require_ca(c->host, c->iri.path)) == NULL)
759 ba94a608 2022-01-04 op return check_matching_certificate(store, c);
763 abc007d2 2021-02-08 op open_dir(struct client *c)
766 11c98667 2021-04-25 op int dirfd, root;
767 252908e6 2021-01-24 op char *before_file;
769 d29a2ee2 2022-09-06 op log_debug(c, "in open_dir");
771 11c98667 2021-04-25 op root = !strcmp(c->iri.path, "/") || *c->iri.path == '\0';
773 0be51733 2021-01-20 op len = strlen(c->iri.path);
774 252908e6 2021-01-24 op if (len > 0 && !ends_with(c->iri.path, "/")) {
775 abc007d2 2021-02-08 op redirect_canonical_dir(c);
779 252908e6 2021-01-24 op strlcpy(c->sbuf, "/", sizeof(c->sbuf));
780 d1ca3911 2021-01-21 op strlcat(c->sbuf, c->iri.path, sizeof(c->sbuf));
781 d1ca3911 2021-01-21 op if (!ends_with(c->sbuf, "/"))
782 0be51733 2021-01-20 op strlcat(c->sbuf, "/", sizeof(c->sbuf));
783 252908e6 2021-01-24 op before_file = strchr(c->sbuf, '\0');
784 c8b74339 2021-01-24 op len = strlcat(c->sbuf, vhost_index(c->host, c->iri.path),
785 c8b74339 2021-01-24 op sizeof(c->sbuf));
786 252908e6 2021-01-24 op if (len >= sizeof(c->sbuf)) {
787 abc007d2 2021-02-08 op start_reply(c, TEMP_FAILURE, "internal server error");
791 252908e6 2021-01-24 op c->iri.path = c->sbuf;
793 252908e6 2021-01-24 op /* close later unless we have to generate the dir listing */
794 abc007d2 2021-02-08 op dirfd = c->pfd;
797 abc007d2 2021-02-08 op switch (check_path(c, c->iri.path, &c->pfd)) {
798 252908e6 2021-01-24 op case FILE_EXISTS:
799 efe7d180 2021-10-02 op c->type = REQUEST_FILE;
800 98ee8406 2021-02-12 op start_reply(c, SUCCESS, mime(c->host, c->iri.path));
803 252908e6 2021-01-24 op case FILE_DIRECTORY:
804 abc007d2 2021-02-08 op start_reply(c, TEMP_REDIRECT, c->sbuf);
807 252908e6 2021-01-24 op case FILE_MISSING:
808 252908e6 2021-01-24 op *before_file = '\0';
810 252908e6 2021-01-24 op if (!vhost_auto_index(c->host, c->iri.path)) {
811 abc007d2 2021-02-08 op start_reply(c, NOT_FOUND, "not found");
815 efe7d180 2021-10-02 op c->type = REQUEST_DIR;
817 e76f2c74 2021-04-25 op c->dirlen = scandir_fd(dirfd, &c->dir,
818 11c98667 2021-04-25 op root ? select_non_dotdot : select_non_dot,
820 11c98667 2021-04-25 op if (c->dirlen == -1) {
821 11c98667 2021-04-25 op log_err(c, "scandir_fd(%d) (vhost:%s) %s: %s",
822 abc007d2 2021-02-08 op c->pfd, c->host->domain, c->iri.path, strerror(errno));
823 abc007d2 2021-02-08 op start_reply(c, TEMP_FAILURE, "internal server error");
826 11c98667 2021-04-25 op c->diroff = 0;
829 4842c72d 2021-10-18 op start_reply(c, SUCCESS, "text/gemini");
830 efe7d180 2021-10-02 op evbuffer_add_printf(EVBUFFER_OUTPUT(c->bev),
831 efe7d180 2021-10-02 op "# Index of %s\n\n", c->iri.path);
835 252908e6 2021-01-24 op /* unreachable */
839 252908e6 2021-01-24 op close(dirfd);
843 abc007d2 2021-02-08 op redirect_canonical_dir(struct client *c)
847 252908e6 2021-01-24 op strlcpy(c->sbuf, "/", sizeof(c->sbuf));
848 252908e6 2021-01-24 op strlcat(c->sbuf, c->iri.path, sizeof(c->sbuf));
849 252908e6 2021-01-24 op len = strlcat(c->sbuf, "/", sizeof(c->sbuf));
851 0be51733 2021-01-20 op if (len >= sizeof(c->sbuf)) {
852 abc007d2 2021-02-08 op start_reply(c, TEMP_FAILURE, "internal server error");
856 abc007d2 2021-02-08 op start_reply(c, TEMP_REDIRECT, c->sbuf);
860 efe7d180 2021-10-02 op client_tls_readcb(int fd, short event, void *d)
862 efe7d180 2021-10-02 op struct bufferevent *bufev = d;
863 efe7d180 2021-10-02 op struct client *client = bufev->cbarg;
866 efe7d180 2021-10-02 op int what = EVBUFFER_READ;
867 efe7d180 2021-10-02 op int howmuch = IBUF_READ_SIZE;
868 efe7d180 2021-10-02 op char buf[IBUF_READ_SIZE];
870 efe7d180 2021-10-02 op if (event == EV_TIMEOUT) {
871 efe7d180 2021-10-02 op what |= EVBUFFER_TIMEOUT;
875 efe7d180 2021-10-02 op if (bufev->wm_read.high != 0)
876 efe7d180 2021-10-02 op howmuch = MIN(sizeof(buf), bufev->wm_read.high);
878 efe7d180 2021-10-02 op switch (ret = tls_read(client->ctx, buf, howmuch)) {
879 efe7d180 2021-10-02 op case TLS_WANT_POLLIN:
880 efe7d180 2021-10-02 op case TLS_WANT_POLLOUT:
883 efe7d180 2021-10-02 op what |= EVBUFFER_ERROR;
888 efe7d180 2021-10-02 op if (len == 0) {
889 efe7d180 2021-10-02 op what |= EVBUFFER_EOF;
893 efe7d180 2021-10-02 op if (evbuffer_add(bufev->input, buf, len) == -1) {
894 efe7d180 2021-10-02 op what |= EVBUFFER_ERROR;
898 efe7d180 2021-10-02 op event_add(&bufev->ev_read, NULL);
899 efe7d180 2021-10-02 op if (bufev->wm_read.low != 0 && len < bufev->wm_read.low)
901 efe7d180 2021-10-02 op if (bufev->wm_read.high != 0 && len > bufev->wm_read.high) {
903 efe7d180 2021-10-02 op * here we could implement a read pressure policy.
907 efe7d180 2021-10-02 op if (bufev->readcb != NULL)
908 efe7d180 2021-10-02 op (*bufev->readcb)(bufev, bufev->cbarg);
913 efe7d180 2021-10-02 op event_add(&bufev->ev_read, NULL);
917 efe7d180 2021-10-02 op (*bufev->errorcb)(bufev, what, bufev->cbarg);
921 efe7d180 2021-10-02 op client_tls_writecb(int fd, short event, void *d)
923 efe7d180 2021-10-02 op struct bufferevent *bufev = d;
924 efe7d180 2021-10-02 op struct client *client = bufev->cbarg;
927 efe7d180 2021-10-02 op short what = EVBUFFER_WRITE;
929 efe7d180 2021-10-02 op if (event == EV_TIMEOUT) {
930 efe7d180 2021-10-02 op what |= EVBUFFER_TIMEOUT;
934 efe7d180 2021-10-02 op if (EVBUFFER_LENGTH(bufev->output) != 0) {
935 efe7d180 2021-10-02 op ret = tls_write(client->ctx,
936 efe7d180 2021-10-02 op EVBUFFER_DATA(bufev->output),
937 efe7d180 2021-10-02 op EVBUFFER_LENGTH(bufev->output));
938 efe7d180 2021-10-02 op switch (ret) {
939 efe7d180 2021-10-02 op case TLS_WANT_POLLIN:
940 efe7d180 2021-10-02 op case TLS_WANT_POLLOUT:
943 efe7d180 2021-10-02 op what |= EVBUFFER_ERROR;
947 efe7d180 2021-10-02 op evbuffer_drain(bufev->output, len);
950 efe7d180 2021-10-02 op if (EVBUFFER_LENGTH(bufev->output) != 0)
951 efe7d180 2021-10-02 op event_add(&bufev->ev_write, NULL);
953 efe7d180 2021-10-02 op if (bufev->writecb != NULL &&
954 efe7d180 2021-10-02 op EVBUFFER_LENGTH(bufev->output) <= bufev->wm_write.low)
955 efe7d180 2021-10-02 op (*bufev->writecb)(bufev, bufev->cbarg);
959 efe7d180 2021-10-02 op event_add(&bufev->ev_write, NULL);
962 efe7d180 2021-10-02 op log_err(client, "tls error: %s", tls_error(client->ctx));
963 efe7d180 2021-10-02 op (*bufev->errorcb)(bufev, what, bufev->cbarg);
967 efe7d180 2021-10-02 op client_read(struct bufferevent *bev, void *d)
969 efe7d180 2021-10-02 op struct client *c = d;
970 efe7d180 2021-10-02 op struct evbuffer *src = EVBUFFER_INPUT(bev);
971 efe7d180 2021-10-02 op const char *parse_err = "invalid request";
972 efe7d180 2021-10-02 op char decoded[DOMAIN_NAME_LEN];
975 efe7d180 2021-10-02 op bufferevent_disable(bev, EVBUFFER_READ);
978 901905e0 2022-01-05 op * libevent2 can still somehow call this function, even
979 901905e0 2022-01-05 op * though I never enable EV_READ in the bufferevent. If
980 901905e0 2022-01-05 op * that's the case, bail out.
982 901905e0 2022-01-05 op if (c->type != REQUEST_UNDECIDED)
985 efe7d180 2021-10-02 op /* max url len + \r\n */
986 efe7d180 2021-10-02 op if (EVBUFFER_LENGTH(src) > 1024 + 2) {
987 efe7d180 2021-10-02 op log_err(c, "too much data received");
988 efe7d180 2021-10-02 op start_reply(c, BAD_REQUEST, "bad request");
992 efe7d180 2021-10-02 op c->req = evbuffer_readln(src, &len, EVBUFFER_EOL_CRLF_STRICT);
993 efe7d180 2021-10-02 op if (c->req == NULL) {
994 efe7d180 2021-10-02 op /* not enough data yet. */
995 efe7d180 2021-10-02 op bufferevent_enable(bev, EVBUFFER_READ);
998 ea27eaaa 2022-03-27 op c->reqlen = strlen(c->req);
999 ea27eaaa 2022-03-27 op if (c->reqlen > 1024+2) {
1000 ea27eaaa 2022-03-27 op log_err(c, "URL too long");
1001 ea27eaaa 2022-03-27 op start_reply(c, BAD_REQUEST, "bad request");
1005 efe7d180 2021-10-02 op if (!parse_iri(c->req, &c->iri, &parse_err) ||
1006 efe7d180 2021-10-02 op !puny_decode(c->iri.host, decoded, sizeof(decoded), &parse_err)) {
1007 efe7d180 2021-10-02 op log_err(c, "IRI parse error: %s", parse_err);
1008 807a80cb 2021-10-06 op start_reply(c, BAD_REQUEST, "bad request");
1012 72b033ef 2021-12-29 op if (apply_reverse_proxy(c))
1015 52c92ef6 2021-12-09 op /* ignore the port number */
1016 52c92ef6 2021-12-09 op if (strcmp(c->iri.schema, "gemini") ||
1017 efe7d180 2021-10-02 op strcmp(decoded, c->domain)) {
1018 efe7d180 2021-10-02 op start_reply(c, PROXY_REFUSED, "won't proxy request");
1022 efe7d180 2021-10-02 op if (apply_require_ca(c) ||
1023 efe7d180 2021-10-02 op apply_block_return(c)||
1024 efe7d180 2021-10-02 op apply_fastcgi(c))
1027 efe7d180 2021-10-02 op open_file(c);
1031 efe7d180 2021-10-02 op client_write(struct bufferevent *bev, void *d)
1033 efe7d180 2021-10-02 op struct client *c = d;
1034 efe7d180 2021-10-02 op struct evbuffer *out = EVBUFFER_OUTPUT(bev);
1035 f2f8eb35 2022-07-04 op char nam[PATH_MAX];
1036 efe7d180 2021-10-02 op char buf[BUFSIZ];
1039 efe7d180 2021-10-02 op switch (c->type) {
1040 efe7d180 2021-10-02 op case REQUEST_UNDECIDED:
1042 efe7d180 2021-10-02 op * Ignore spurious calls when we still don't have idea
1043 efe7d180 2021-10-02 op * what to do with the request.
1047 efe7d180 2021-10-02 op case REQUEST_FILE:
1048 efe7d180 2021-10-02 op if ((r = read(c->pfd, buf, sizeof(buf))) == -1) {
1049 efe7d180 2021-10-02 op log_warn(c, "read: %s", strerror(errno));
1050 efe7d180 2021-10-02 op client_error(bev, EVBUFFER_ERROR, c);
1052 efe7d180 2021-10-02 op } else if (r == 0) {
1053 efe7d180 2021-10-02 op client_close(c);
1055 efe7d180 2021-10-02 op } else if (r != sizeof(buf))
1056 efe7d180 2021-10-02 op c->type = REQUEST_DONE;
1057 efe7d180 2021-10-02 op bufferevent_write(bev, buf, r);
1060 efe7d180 2021-10-02 op case REQUEST_DIR:
1061 efe7d180 2021-10-02 op /* TODO: handle big big directories better */
1062 efe7d180 2021-10-02 op for (c->diroff = 0; c->diroff < c->dirlen; ++c->diroff) {
1063 543f4a66 2022-07-04 op const char *sufx = "";
1065 f2f8eb35 2022-07-04 op encode_path(nam, sizeof(nam),
1066 efe7d180 2021-10-02 op c->dir[c->diroff]->d_name);
1067 543f4a66 2022-07-04 op if (c->dir[c->diroff]->d_type == DT_DIR)
1069 543f4a66 2022-07-04 op evbuffer_add_printf(out, "=> ./%s%s\n", nam, sufx);
1070 efe7d180 2021-10-02 op free(c->dir[c->diroff]);
1072 efe7d180 2021-10-02 op free(c->dir);
1073 efe7d180 2021-10-02 op c->dir = NULL;
1075 efe7d180 2021-10-02 op c->type = REQUEST_DONE;
1077 efe7d180 2021-10-02 op event_add(&c->bev->ev_write, NULL);
1080 efe7d180 2021-10-02 op case REQUEST_FCGI:
1081 72b033ef 2021-12-29 op case REQUEST_PROXY:
1083 d29a2ee2 2022-09-06 op * Here we depend on fastcgi or proxy connection to
1084 d29a2ee2 2022-09-06 op * provide data.
1088 efe7d180 2021-10-02 op case REQUEST_DONE:
1089 efe7d180 2021-10-02 op if (EVBUFFER_LENGTH(out) == 0)
1090 efe7d180 2021-10-02 op client_close(c);
1096 efe7d180 2021-10-02 op client_error(struct bufferevent *bev, short error, void *d)
1098 efe7d180 2021-10-02 op struct client *c = d;
1100 efe7d180 2021-10-02 op c->type = REQUEST_DONE;
1102 efe7d180 2021-10-02 op if (error & EVBUFFER_TIMEOUT) {
1103 efe7d180 2021-10-02 op log_warn(c, "timeout reached, "
1104 efe7d180 2021-10-02 op "forcefully closing the connection");
1105 efe7d180 2021-10-02 op if (c->code == 0)
1106 efe7d180 2021-10-02 op start_reply(c, BAD_REQUEST, "timeout");
1108 efe7d180 2021-10-02 op client_close(c);
1112 efe7d180 2021-10-02 op if (error & EVBUFFER_EOF) {
1113 efe7d180 2021-10-02 op client_close(c);
1117 d98ae929 2022-02-19 op log_err(c, "unknown bufferevent error %x", error);
1118 efe7d180 2021-10-02 op client_close(c);
1122 efe7d180 2021-10-02 op start_reply(struct client *c, int code, const char *meta)
1124 efe7d180 2021-10-02 op struct evbuffer *evb = EVBUFFER_OUTPUT(c->bev);
1125 efe7d180 2021-10-02 op const char *lang;
1128 efe7d180 2021-10-02 op bufferevent_enable(c->bev, EVBUFFER_WRITE);
1130 efe7d180 2021-10-02 op c->code = code;
1131 efe7d180 2021-10-02 op c->meta = meta;
1133 efe7d180 2021-10-02 op r = evbuffer_add_printf(evb, "%d %s", code, meta);
1134 efe7d180 2021-10-02 op if (r == -1)
1137 efe7d180 2021-10-02 op /* 2 digit status + space + 1024 max reply */
1138 efe7d180 2021-10-02 op if (r > 1027)
1139 efe7d180 2021-10-02 op goto overflow;
1141 d29a2ee2 2022-09-06 op if (c->type != REQUEST_FCGI &&
1142 72b033ef 2021-12-29 op c->type != REQUEST_PROXY &&
1143 efe7d180 2021-10-02 op !strcmp(meta, "text/gemini") &&
1144 efe7d180 2021-10-02 op (lang = vhost_lang(c->host, c->iri.path)) != NULL) {
1145 4842c72d 2021-10-18 op rr = evbuffer_add_printf(evb, ";lang=%s", lang);
1146 efe7d180 2021-10-02 op if (rr == -1)
1148 efe7d180 2021-10-02 op if (r + rr > 1027)
1149 efe7d180 2021-10-02 op goto overflow;
1152 efe7d180 2021-10-02 op bufferevent_write(c->bev, "\r\n", 2);
1154 efe7d180 2021-10-02 op if (!vhost_disable_log(c->host, c->iri.path))
1155 efe7d180 2021-10-02 op log_request(c, EVBUFFER_DATA(evb), EVBUFFER_LENGTH(evb));
1157 d28bd963 2022-01-27 op if (code != 20)
1158 efe7d180 2021-10-02 op c->type = REQUEST_DONE;
1163 efe7d180 2021-10-02 op log_err(c, "evbuffer_add_printf error: no memory");
1164 efe7d180 2021-10-02 op evbuffer_drain(evb, EVBUFFER_LENGTH(evb));
1165 efe7d180 2021-10-02 op client_close(c);
1169 efe7d180 2021-10-02 op log_warn(c, "reply header overflow");
1170 efe7d180 2021-10-02 op evbuffer_drain(evb, EVBUFFER_LENGTH(evb));
1171 efe7d180 2021-10-02 op start_reply(c, TEMP_FAILURE, "internal error");
1175 efe7d180 2021-10-02 op client_close_ev(int fd, short event, void *d)
1177 8ad1c570 2021-05-09 op struct client *c = d;
1179 d3a08f4d 2021-01-17 op switch (tls_close(c->ctx)) {
1180 d3a08f4d 2021-01-17 op case TLS_WANT_POLLIN:
1181 efe7d180 2021-10-02 op event_once(c->fd, EV_READ, client_close_ev, c, NULL);
1183 d3a08f4d 2021-01-17 op case TLS_WANT_POLLOUT:
1184 efe7d180 2021-10-02 op event_once(c->fd, EV_WRITE, client_close_ev, c, NULL);
1188 d3a08f4d 2021-01-17 op connected_clients--;
1190 e4daebe4 2021-10-06 op free(c->req);
1192 d3a08f4d 2021-01-17 op tls_free(c->ctx);
1193 d3a08f4d 2021-01-17 op c->ctx = NULL;
1195 efe7d180 2021-10-02 op free(c->header);
1197 abc007d2 2021-02-08 op if (c->pfd != -1)
1198 abc007d2 2021-02-08 op close(c->pfd);
1200 252908e6 2021-01-24 op if (c->dir != NULL)
1201 11c98667 2021-04-25 op free(c->dir);
1203 abc007d2 2021-02-08 op close(c->fd);
1208 72b033ef 2021-12-29 op client_proxy_close(int fd, short event, void *d)
1210 72b033ef 2021-12-29 op struct tls *ctx = d;
1212 72b033ef 2021-12-29 op if (ctx == NULL) {
1217 72b033ef 2021-12-29 op switch (tls_close(ctx)) {
1218 72b033ef 2021-12-29 op case TLS_WANT_POLLIN:
1219 72b033ef 2021-12-29 op event_once(fd, EV_READ, client_proxy_close, d, NULL);
1221 72b033ef 2021-12-29 op case TLS_WANT_POLLOUT:
1222 72b033ef 2021-12-29 op event_once(fd, EV_WRITE, client_proxy_close, d, NULL);
1226 72b033ef 2021-12-29 op tls_free(ctx);
1231 efe7d180 2021-10-02 op client_close(struct client *c)
1234 efe7d180 2021-10-02 op * We may end up calling client_close in various situations
1235 efe7d180 2021-10-02 op * and for the most unexpected reasons. Therefore, we need to
1236 b9b77f53 2022-01-27 op * ensure that everything gets properly released once we reach
1237 efe7d180 2021-10-02 op * this point.
1240 207b3e80 2021-10-07 op SPLAY_REMOVE(client_tree_id, &clients, c);
1242 efe7d180 2021-10-02 op if (c->cgibev != NULL) {
1243 efe7d180 2021-10-02 op bufferevent_disable(c->cgibev, EVBUFFER_READ|EVBUFFER_WRITE);
1244 efe7d180 2021-10-02 op bufferevent_free(c->cgibev);
1245 efe7d180 2021-10-02 op c->cgibev = NULL;
1246 efe7d180 2021-10-02 op close(c->pfd);
1247 efe7d180 2021-10-02 op c->pfd = -1;
1250 efe7d180 2021-10-02 op bufferevent_disable(c->bev, EVBUFFER_READ|EVBUFFER_WRITE);
1251 efe7d180 2021-10-02 op bufferevent_free(c->bev);
1252 efe7d180 2021-10-02 op c->bev = NULL;
1254 e0f6dc64 2022-01-27 op if (c->proxyevset &&
1255 e0f6dc64 2022-01-27 op event_pending(&c->proxyev, EV_READ|EV_WRITE, NULL)) {
1256 e0f6dc64 2022-01-27 op c->proxyevset = 0;
1257 e0f6dc64 2022-01-27 op event_del(&c->proxyev);
1260 e0f6dc64 2022-01-27 op if (c->pfd != -1 && c->proxyctx != NULL) {
1261 e0f6dc64 2022-01-27 op /* shut down the proxy TLS connection */
1262 e0f6dc64 2022-01-27 op client_proxy_close(c->pfd, 0, c->proxyctx);
1263 e0f6dc64 2022-01-27 op c->pfd = -1;
1266 e0f6dc64 2022-01-27 op if (c->proxybev != NULL)
1267 e0f6dc64 2022-01-27 op bufferevent_free(c->proxybev);
1269 efe7d180 2021-10-02 op client_close_ev(c->fd, 0, c);
1273 abc007d2 2021-02-08 op do_accept(int sock, short et, void *d)
1275 abc007d2 2021-02-08 op struct client *c;
1276 d3a08f4d 2021-01-17 op struct sockaddr_storage addr;
1277 abc007d2 2021-02-08 op struct sockaddr *saddr;
1278 d3a08f4d 2021-01-17 op socklen_t len;
1281 abc007d2 2021-02-08 op saddr = (struct sockaddr*)&addr;
1282 d3a08f4d 2021-01-17 op len = sizeof(addr);
1283 3cb3dd4d 2021-02-12 op if ((fd = accept(sock, saddr, &len)) == -1) {
1284 c62a411f 2021-10-13 op if (errno == EWOULDBLOCK || errno == EAGAIN ||
1285 c62a411f 2021-10-13 op errno == ECONNABORTED)
1287 df5058c9 2023-06-05 op fatal("accept");
1290 3cb3dd4d 2021-02-12 op mark_nonblock(fd);
1292 207b3e80 2021-10-07 op c = xcalloc(1, sizeof(*c));
1293 207b3e80 2021-10-07 op c->id = ++server_client_id;
1295 207b3e80 2021-10-07 op c->pfd = -1;
1296 207b3e80 2021-10-07 op c->addr = addr;
1298 207b3e80 2021-10-07 op if (tls_accept_socket(ctx, &c->ctx, fd) == -1) {
1299 207b3e80 2021-10-07 op log_warn(c, "failed to accept socket: %s", tls_error(c->ctx));
1300 207b3e80 2021-10-07 op close(c->fd);
1305 207b3e80 2021-10-07 op SPLAY_INSERT(client_tree_id, &clients, c);
1306 207b3e80 2021-10-07 op event_once(c->fd, EV_READ|EV_WRITE, handle_handshake, c, NULL);
1307 207b3e80 2021-10-07 op connected_clients++;
1310 8ad1c570 2021-05-09 op struct client *
1311 3fdc457c 2022-03-26 op client_by_id(int id)
1313 207b3e80 2021-10-07 op struct client find;
1315 207b3e80 2021-10-07 op find.id = id;
1316 207b3e80 2021-10-07 op return SPLAY_FIND(client_tree_id, &clients, &find);
1320 d040746a 2022-09-10 op handle_dispatch_imsg(int fd, short ev, void *d)
1322 d040746a 2022-09-10 op struct imsgbuf *ibuf = d;
1323 d040746a 2022-09-10 op struct imsg imsg;
1326 d040746a 2022-09-10 op if ((n = imsg_read(ibuf)) == -1) {
1327 d040746a 2022-09-10 op if (errno == EAGAIN || errno == EWOULDBLOCK)
1329 d040746a 2022-09-10 op fatal("imsg_read");
1333 df5058c9 2023-06-05 op fatalx("connection closed.");
1336 d040746a 2022-09-10 op if ((n = imsg_get(ibuf, &imsg)) == -1)
1337 d040746a 2022-09-10 op fatal("imsg_get");
1341 d040746a 2022-09-10 op switch (imsg.hdr.type) {
1342 d040746a 2022-09-10 op case IMSG_QUIT:
1344 d040746a 2022-09-10 op * Don't call event_loopbreak since we want to
1345 d040746a 2022-09-10 op * finish handling the ongoing connections.
1347 d040746a 2022-09-10 op shutting_down = 1;
1349 d040746a 2022-09-10 op event_del(&e4);
1350 d040746a 2022-09-10 op if (has_ipv6)
1351 d040746a 2022-09-10 op event_del(&e6);
1352 d040746a 2022-09-10 op if (has_siginfo)
1353 d040746a 2022-09-10 op signal_del(&siginfo);
1354 d040746a 2022-09-10 op event_del(&imsgev);
1355 d040746a 2022-09-10 op signal_del(&sigusr2);
1358 df5058c9 2023-06-05 op fatalx("Unknown message %d", imsg.hdr.type);
1360 d040746a 2022-09-10 op imsg_free(&imsg);
1365 abc007d2 2021-02-08 op handle_siginfo(int fd, short ev, void *d)
1367 abc007d2 2021-02-08 op log_info(NULL, "%d connected clients", connected_clients);
1371 bc99d868 2021-03-19 op loop(struct tls *ctx_, int sock4, int sock6, struct imsgbuf *ibuf)
1375 207b3e80 2021-10-07 op SPLAY_INIT(&clients);
1377 abc007d2 2021-02-08 op event_init();
1379 bc99d868 2021-03-19 op event_set(&e4, sock4, EV_READ | EV_PERSIST, &do_accept, NULL);
1380 a6e689d7 2021-02-12 op event_add(&e4, NULL);
1382 abc007d2 2021-02-08 op if (sock6 != -1) {
1383 a6e689d7 2021-02-12 op has_ipv6 = 1;
1384 bc99d868 2021-03-19 op event_set(&e6, sock6, EV_READ | EV_PERSIST, &do_accept, NULL);
1385 a6e689d7 2021-02-12 op event_add(&e6, NULL);
1389 0126d91d 2022-09-07 op event_set(&imsgev, ibuf->fd, EV_READ | EV_PERSIST,
1390 0126d91d 2022-09-07 op handle_dispatch_imsg, ibuf);
1391 0126d91d 2022-09-07 op event_add(&imsgev, NULL);
1394 abc007d2 2021-02-08 op #ifdef SIGINFO
1395 a6e689d7 2021-02-12 op has_siginfo = 1;
1396 a6e689d7 2021-02-12 op signal_set(&siginfo, SIGINFO, &handle_siginfo, NULL);
1397 a6e689d7 2021-02-12 op signal_add(&siginfo, NULL);
1399 5e3285d5 2021-02-12 op signal_set(&sigusr2, SIGUSR2, &handle_siginfo, NULL);
1400 a6e689d7 2021-02-12 op signal_add(&sigusr2, NULL);
1402 1e0b9745 2023-05-08 op sandbox_server_process();
1403 abc007d2 2021-02-08 op event_dispatch();
1408 a01a91db 2023-06-05 op load_vhosts(void)
1410 a01a91db 2023-06-05 op struct vhost *h;
1411 a01a91db 2023-06-05 op struct location *l;
1413 a01a91db 2023-06-05 op TAILQ_FOREACH(h, &hosts, vhosts) {
1414 a01a91db 2023-06-05 op TAILQ_FOREACH(l, &h->locations, locations) {
1415 a01a91db 2023-06-05 op if (*l->dir == '\0')
1417 a01a91db 2023-06-05 op l->dirfd = open(l->dir, O_RDONLY | O_DIRECTORY);
1418 a01a91db 2023-06-05 op if (l->dirfd == -1)
1419 df5058c9 2023-06-05 op fatal("open %s for domain %s", l->dir,
1426 a01a91db 2023-06-05 op server_main(struct tls *ctx_, struct imsgbuf *ibuf, int sock4, int sock6)
1428 a01a91db 2023-06-05 op drop_priv();
1429 a01a91db 2023-06-05 op if (load_default_mime(&conf.mime) == -1)
1430 df5058c9 2023-06-05 op fatal("can't load default mime");
1431 a01a91db 2023-06-05 op sort_mime(&conf.mime);
1432 a01a91db 2023-06-05 op load_vhosts();
1433 a01a91db 2023-06-05 op loop(ctx_, sock4, sock6, ibuf);
1438 207b3e80 2021-10-07 op client_tree_cmp(struct client *a, struct client *b)
1440 207b3e80 2021-10-07 op if (a->id == b->id)
1442 207b3e80 2021-10-07 op else if (a->id < b->id)
1448 207b3e80 2021-10-07 op SPLAY_GENERATE(client_tree_id, client, entry, client_tree_cmp)
