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 efe7d180 2021-10-02 op #define MIN(a, b) ((a) < (b) ? (a) : (b))
33 090b8a89 2021-07-06 op int shutting_down;
35 bc99d868 2021-03-19 op static struct tls *ctx;
37 bc99d868 2021-03-19 op static struct event e4, e6, imsgev, siginfo, sigusr2;
38 6b191ed5 2021-02-23 op static int has_ipv6, has_siginfo;
40 d3a08f4d 2021-01-17 op int connected_clients;
42 49b73ba1 2021-02-10 op static inline int matches(const char*, const char*);
44 fe406389 2021-02-02 op static int check_path(struct client*, const char*, int*);
45 abc007d2 2021-02-08 op static void open_file(struct client*);
46 abc007d2 2021-02-08 op static void handle_handshake(int, short, void*);
47 91b9f2a8 2021-05-15 op static const char *strip_path(const char*, int);
48 57ec3e77 2021-02-08 op static void fmt_sbuf(const char*, struct client*, const char*);
49 abc007d2 2021-02-08 op static int apply_block_return(struct client*);
50 d474a979 2022-01-04 op static int check_matching_certificate(X509_STORE *, struct client *);
51 72b033ef 2021-12-29 op static int apply_reverse_proxy(struct client *);
52 efe7d180 2021-10-02 op static int apply_fastcgi(struct client*);
53 02be96c6 2021-02-09 op static int apply_require_ca(struct client*);
54 abc007d2 2021-02-08 op static void open_dir(struct client*);
55 abc007d2 2021-02-08 op static void redirect_canonical_dir(struct client*);
57 efe7d180 2021-10-02 op static void client_tls_readcb(int, short, void *);
58 efe7d180 2021-10-02 op static void client_tls_writecb(int, short, void *);
60 efe7d180 2021-10-02 op static void client_read(struct bufferevent *, void *);
61 efe7d180 2021-10-02 op void client_write(struct bufferevent *, void *);
62 efe7d180 2021-10-02 op static void client_error(struct bufferevent *, short, void *);
64 efe7d180 2021-10-02 op static void client_close_ev(int, short, void *);
66 abc007d2 2021-02-08 op static void do_accept(int, short, void*);
68 efe7d180 2021-10-02 op static void handle_dispatch_imsg(int, short, void *);
69 bc99d868 2021-03-19 op static void handle_siginfo(int, short, void*);
71 207b3e80 2021-10-07 op static uint32_t server_client_id;
73 207b3e80 2021-10-07 op struct client_tree_id clients;
75 49b73ba1 2021-02-10 op static inline int
76 49b73ba1 2021-02-10 op matches(const char *pattern, const char *path)
78 49b73ba1 2021-02-10 op if (*path == '/')
80 49b73ba1 2021-02-10 op return !fnmatch(pattern, path, 0);
84 c8b74339 2021-01-24 op vhost_lang(struct vhost *v, const char *path)
86 c8b74339 2021-01-24 op struct location *loc;
88 caad0308 2021-01-27 op if (v == NULL || path == NULL)
91 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
92 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
93 534afd0d 2022-10-05 op if (*loc->lang != '\0') {
94 49b73ba1 2021-02-10 op if (matches(loc->match, path))
95 6016a593 2021-01-30 op return loc->lang;
99 534afd0d 2022-10-05 op loc = TAILQ_FIRST(&v->locations);
100 534afd0d 2022-10-05 op if (*loc->lang == '\0')
102 534afd0d 2022-10-05 op return loc->lang;
106 c8b74339 2021-01-24 op vhost_default_mime(struct vhost *v, const char *path)
108 c8b74339 2021-01-24 op struct location *loc;
109 c8b74339 2021-01-24 op const char *default_mime = "application/octet-stream";
111 caad0308 2021-01-27 op if (v == NULL || path == NULL)
112 caad0308 2021-01-27 op return default_mime;
114 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
115 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
116 534afd0d 2022-10-05 op if (*loc->default_mime != '\0') {
117 49b73ba1 2021-02-10 op if (matches(loc->match, path))
118 6016a593 2021-01-30 op return loc->default_mime;
122 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
123 534afd0d 2022-10-05 op if (*loc->default_mime != '\0')
124 b8e64ccd 2021-03-31 op return loc->default_mime;
125 c8b74339 2021-01-24 op return default_mime;
129 c8b74339 2021-01-24 op vhost_index(struct vhost *v, const char *path)
131 c8b74339 2021-01-24 op struct location *loc;
132 c8b74339 2021-01-24 op const char *index = "index.gmi";
134 caad0308 2021-01-27 op if (v == NULL || path == NULL)
135 caad0308 2021-01-27 op return index;
137 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
138 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
139 534afd0d 2022-10-05 op if (*loc->index != '\0') {
140 49b73ba1 2021-02-10 op if (matches(loc->match, path))
141 6016a593 2021-01-30 op return loc->index;
145 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
146 534afd0d 2022-10-05 op if (*loc->index != '\0')
147 b8e64ccd 2021-03-31 op return loc->index;
148 c8b74339 2021-01-24 op return index;
152 252908e6 2021-01-24 op vhost_auto_index(struct vhost *v, const char *path)
154 252908e6 2021-01-24 op struct location *loc;
156 6016a593 2021-01-30 op if (v == NULL || path == NULL)
159 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
160 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
161 cd761624 2021-02-06 op if (loc->auto_index != 0) {
162 49b73ba1 2021-02-10 op if (matches(loc->match, path))
163 6016a593 2021-01-30 op return loc->auto_index == 1;
167 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
168 b8e64ccd 2021-03-31 op return loc->auto_index == 1;
172 6abda252 2021-02-06 op vhost_block_return(struct vhost *v, const char *path, int *code, const char **fmt)
174 6abda252 2021-02-06 op struct location *loc;
176 6abda252 2021-02-06 op if (v == NULL || path == NULL)
179 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
180 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
181 cd761624 2021-02-06 op if (loc->block_code != 0) {
182 49b73ba1 2021-02-10 op if (matches(loc->match, path)) {
183 6abda252 2021-02-06 op *code = loc->block_code;
184 6abda252 2021-02-06 op *fmt = loc->block_fmt;
190 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
191 b8e64ccd 2021-03-31 op *code = loc->block_code;
192 b8e64ccd 2021-03-31 op *fmt = loc->block_fmt;
193 b8e64ccd 2021-03-31 op return loc->block_code != 0;
197 8ad1c570 2021-05-09 op vhost_fastcgi(struct vhost *v, const char *path)
199 8ad1c570 2021-05-09 op struct location *loc;
201 8ad1c570 2021-05-09 op if (v == NULL || path == NULL)
204 8ad1c570 2021-05-09 op loc = TAILQ_FIRST(&v->locations);
205 8ad1c570 2021-05-09 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
206 8ad1c570 2021-05-09 op if (loc->fcgi != -1)
207 8ad1c570 2021-05-09 op if (matches(loc->match, path))
208 8ad1c570 2021-05-09 op return loc->fcgi;
211 8ad1c570 2021-05-09 op loc = TAILQ_FIRST(&v->locations);
212 8ad1c570 2021-05-09 op return loc->fcgi;
216 1feaf2a6 2021-05-15 op vhost_dirfd(struct vhost *v, const char *path, size_t *retloc)
218 fdea6aa0 2021-04-30 op struct location *loc;
219 1feaf2a6 2021-05-15 op size_t l = 0;
221 fdea6aa0 2021-04-30 op if (v == NULL || path == NULL)
224 fdea6aa0 2021-04-30 op loc = TAILQ_FIRST(&v->locations);
225 fdea6aa0 2021-04-30 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
227 fdea6aa0 2021-04-30 op if (loc->dirfd != -1)
228 1feaf2a6 2021-05-15 op if (matches(loc->match, path)) {
230 fdea6aa0 2021-04-30 op return loc->dirfd;
235 fdea6aa0 2021-04-30 op loc = TAILQ_FIRST(&v->locations);
236 fdea6aa0 2021-04-30 op return loc->dirfd;
240 6abda252 2021-02-06 op vhost_strip(struct vhost *v, const char *path)
242 6abda252 2021-02-06 op struct location *loc;
244 6abda252 2021-02-06 op if (v == NULL || path == NULL)
247 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
248 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
249 cd761624 2021-02-06 op if (loc->strip != 0) {
250 49b73ba1 2021-02-10 op if (matches(loc->match, path))
251 6abda252 2021-02-06 op return loc->strip;
255 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
256 b8e64ccd 2021-03-31 op return loc->strip;
260 02be96c6 2021-02-09 op vhost_require_ca(struct vhost *v, const char *path)
262 02be96c6 2021-02-09 op struct location *loc;
264 02be96c6 2021-02-09 op if (v == NULL || path == NULL)
267 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
268 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
269 02be96c6 2021-02-09 op if (loc->reqca != NULL) {
270 49b73ba1 2021-02-10 op if (matches(loc->match, path))
271 02be96c6 2021-02-09 op return loc->reqca;
275 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
276 b8e64ccd 2021-03-31 op return loc->reqca;
280 793835cb 2021-02-23 op vhost_disable_log(struct vhost *v, const char *path)
282 793835cb 2021-02-23 op struct location *loc;
284 793835cb 2021-02-23 op if (v == NULL || path == NULL)
287 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
288 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
289 793835cb 2021-02-23 op if (loc->disable_log && matches(loc->match, path))
293 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
294 b8e64ccd 2021-03-31 op return loc->disable_log;
298 d3a08f4d 2021-01-17 op check_path(struct client *c, const char *path, int *fd)
300 d3a08f4d 2021-01-17 op struct stat sb;
301 d1ca3911 2021-01-21 op const char *p;
302 efb48052 2021-07-27 op int dirfd, strip;
304 d3a08f4d 2021-01-17 op assert(path != NULL);
307 fdea6aa0 2021-04-30 op * in send_dir we add an initial / (to be redirect-friendly),
308 fdea6aa0 2021-04-30 op * but here we want to skip it
310 fdea6aa0 2021-04-30 op if (*path == '/')
313 fdea6aa0 2021-04-30 op strip = vhost_strip(c->host, path);
314 fdea6aa0 2021-04-30 op p = strip_path(path, strip);
316 fdea6aa0 2021-04-30 op if (*p == '/')
318 fdea6aa0 2021-04-30 op if (*p == '\0')
321 1feaf2a6 2021-05-15 op dirfd = vhost_dirfd(c->host, path, &c->loc);
322 fdea6aa0 2021-04-30 op log_debug(c, "check_path: strip=%d path=%s original=%s",
323 fdea6aa0 2021-04-30 op strip, p, path);
324 3bd4a6de 2022-07-04 op if (*fd == -1 && (*fd = openat(dirfd, p, O_RDONLY)) == -1) {
325 3bd4a6de 2022-07-04 op if (errno == EACCES)
326 3bd4a6de 2022-07-04 op log_info(c, "can't open %s: %s", p, strerror(errno));
327 d3a08f4d 2021-01-17 op return FILE_MISSING;
330 d3a08f4d 2021-01-17 op if (fstat(*fd, &sb) == -1) {
331 3abf91b0 2021-02-07 op log_notice(c, "failed stat for %s: %s", path, strerror(errno));
332 d3a08f4d 2021-01-17 op return FILE_MISSING;
335 d3a08f4d 2021-01-17 op if (S_ISDIR(sb.st_mode))
336 d3a08f4d 2021-01-17 op return FILE_DIRECTORY;
338 d3a08f4d 2021-01-17 op return FILE_EXISTS;
342 abc007d2 2021-02-08 op open_file(struct client *c)
344 abc007d2 2021-02-08 op switch (check_path(c, c->iri.path, &c->pfd)) {
345 d3a08f4d 2021-01-17 op case FILE_EXISTS:
346 efe7d180 2021-10-02 op c->type = REQUEST_FILE;
347 27b2fa9a 2021-02-12 op start_reply(c, SUCCESS, mime(c->host, c->iri.path));
350 d3a08f4d 2021-01-17 op case FILE_DIRECTORY:
354 d3a08f4d 2021-01-17 op case FILE_MISSING:
355 abc007d2 2021-02-08 op start_reply(c, NOT_FOUND, "not found");
359 d3a08f4d 2021-01-17 op /* unreachable */
365 9b8f5ed2 2021-02-03 op mark_nonblock(int fd)
369 9b8f5ed2 2021-02-03 op if ((flags = fcntl(fd, F_GETFL)) == -1)
370 9b8f5ed2 2021-02-03 op fatal("fcntl(F_GETFL): %s", strerror(errno));
371 9b8f5ed2 2021-02-03 op if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1)
372 9b8f5ed2 2021-02-03 op fatal("fcntl(F_SETFL): %s", strerror(errno));
376 abc007d2 2021-02-08 op handle_handshake(int fd, short ev, void *d)
378 abc007d2 2021-02-08 op struct client *c = d;
379 d3a08f4d 2021-01-17 op struct vhost *h;
380 cc8c2901 2021-04-29 op struct alist *a;
381 d3a08f4d 2021-01-17 op const char *servname;
382 a8d4a897 2021-01-29 op const char *parse_err = "unknown error";
384 d3a08f4d 2021-01-17 op switch (tls_handshake(c->ctx)) {
385 d3a08f4d 2021-01-17 op case 0: /* success */
386 d3a08f4d 2021-01-17 op case -1: /* already handshaked */
388 d3a08f4d 2021-01-17 op case TLS_WANT_POLLIN:
389 efe7d180 2021-10-02 op event_once(c->fd, EV_READ, handle_handshake, c, NULL);
391 d3a08f4d 2021-01-17 op case TLS_WANT_POLLOUT:
392 efe7d180 2021-10-02 op event_once(c->fd, EV_WRITE, handle_handshake, c, NULL);
395 d3a08f4d 2021-01-17 op /* unreachable */
399 80444938 2021-10-15 op c->bev = bufferevent_new(fd, client_read, client_write,
400 80444938 2021-10-15 op client_error, c);
401 80444938 2021-10-15 op if (c->bev == NULL)
402 80444938 2021-10-15 op fatal("%s: failed to allocate client buffer: %s",
403 80444938 2021-10-15 op __func__, strerror(errno));
405 80444938 2021-10-15 op event_set(&c->bev->ev_read, c->fd, EV_READ,
406 80444938 2021-10-15 op client_tls_readcb, c->bev);
407 80444938 2021-10-15 op event_set(&c->bev->ev_write, c->fd, EV_WRITE,
408 80444938 2021-10-15 op client_tls_writecb, c->bev);
410 80444938 2021-10-15 op #if HAVE_LIBEVENT2
411 80444938 2021-10-15 op evbuffer_unfreeze(c->bev->input, 0);
412 80444938 2021-10-15 op evbuffer_unfreeze(c->bev->output, 1);
415 79288c8b 2021-09-24 op if ((servname = tls_conn_servername(c->ctx)) == NULL) {
416 79288c8b 2021-09-24 op log_debug(c, "handshake: missing SNI");
420 a8d4a897 2021-01-29 op if (!puny_decode(servname, c->domain, sizeof(c->domain), &parse_err)) {
421 3abf91b0 2021-02-07 op log_info(c, "puny_decode: %s", parse_err);
425 b8e64ccd 2021-03-31 op TAILQ_FOREACH(h, &hosts, vhosts) {
426 eecad7a3 2021-02-12 op if (matches(h->domain, c->domain))
428 cc8c2901 2021-04-29 op TAILQ_FOREACH(a, &h->aliases, aliases) {
429 cc8c2901 2021-04-29 op if (matches(a->alias, c->domain))
435 3abf91b0 2021-02-07 op log_debug(c, "handshake: SNI: \"%s\"; decoded: \"%s\"; matched: \"%s\"",
436 3abf91b0 2021-02-07 op servname != NULL ? servname : "(null)",
438 b8e64ccd 2021-03-31 op h != NULL ? h->domain : "(null)");
440 b8e64ccd 2021-03-31 op if (h != NULL) {
442 efe7d180 2021-10-02 op bufferevent_enable(c->bev, EV_READ);
447 abc007d2 2021-02-08 op start_reply(c, BAD_REQUEST, "Wrong/malformed host or missing SNI");
450 91b9f2a8 2021-05-15 op static const char *
451 91b9f2a8 2021-05-15 op strip_path(const char *path, int strip)
455 6abda252 2021-02-06 op while (strip > 0) {
456 6abda252 2021-02-06 op if ((t = strchr(path, '/')) == NULL) {
457 6abda252 2021-02-06 op path = strchr(path, '\0');
468 57ec3e77 2021-02-08 op fmt_sbuf(const char *fmt, struct client *c, const char *path)
471 4842c72d 2021-10-18 op char buf[32];
473 6abda252 2021-02-06 op memset(buf, 0, sizeof(buf));
474 6abda252 2021-02-06 op for (i = 0; *fmt; ++fmt) {
475 6abda252 2021-02-06 op if (i == sizeof(buf)-1 || *fmt == '%') {
476 6abda252 2021-02-06 op strlcat(c->sbuf, buf, sizeof(c->sbuf));
477 6abda252 2021-02-06 op memset(buf, 0, sizeof(buf));
481 6abda252 2021-02-06 op if (*fmt != '%') {
482 6abda252 2021-02-06 op buf[i++] = *fmt;
486 6abda252 2021-02-06 op switch (*++fmt) {
488 6abda252 2021-02-06 op strlcat(c->sbuf, "%", sizeof(c->sbuf));
491 737a6b50 2021-04-30 op if (*path != '/')
492 737a6b50 2021-04-30 op strlcat(c->sbuf, "/", sizeof(c->sbuf));
493 6abda252 2021-02-06 op strlcat(c->sbuf, path, sizeof(c->sbuf));
496 6abda252 2021-02-06 op strlcat(c->sbuf, c->iri.query, sizeof(c->sbuf));
499 6abda252 2021-02-06 op snprintf(buf, sizeof(buf), "%d", conf.port);
500 6abda252 2021-02-06 op strlcat(c->sbuf, buf, sizeof(c->sbuf));
501 6abda252 2021-02-06 op memset(buf, 0, sizeof(buf));
504 6abda252 2021-02-06 op strlcat(c->sbuf, c->domain, sizeof(c->sbuf));
507 6abda252 2021-02-06 op fatal("%s: unknown fmt specifier %c",
508 6abda252 2021-02-06 op __func__, *fmt);
513 6abda252 2021-02-06 op strlcat(c->sbuf, buf, sizeof(c->sbuf));
516 57ec3e77 2021-02-08 op /* 1 if a matching `block return' (and apply it), 0 otherwise */
518 57ec3e77 2021-02-08 op apply_block_return(struct client *c)
520 57ec3e77 2021-02-08 op const char *fmt, *path;
523 57ec3e77 2021-02-08 op if (!vhost_block_return(c->host, c->iri.path, &code, &fmt))
526 57ec3e77 2021-02-08 op path = strip_path(c->iri.path, vhost_strip(c->host, c->iri.path));
527 57ec3e77 2021-02-08 op fmt_sbuf(fmt, c, path);
529 abc007d2 2021-02-08 op start_reply(c, code, c->sbuf);
533 b7967bc1 2021-01-02 op static struct proxy *
534 b7967bc1 2021-01-02 op matched_proxy(struct client *c)
536 b7967bc1 2021-01-02 op struct proxy *p;
537 b7967bc1 2021-01-02 op const char *proto;
538 b7967bc1 2021-01-02 op const char *host;
539 b7967bc1 2021-01-02 op const char *port;
541 b7967bc1 2021-01-02 op TAILQ_FOREACH(p, &c->host->proxies, proxies) {
542 534afd0d 2022-10-05 op if (*(proto = p->match_proto) == '\0')
543 b7967bc1 2021-01-02 op proto = "gemini";
544 534afd0d 2022-10-05 op if (*(host = p->match_host) == '\0')
546 534afd0d 2022-10-05 op if (*(port = p->match_port) == '\0')
549 b7967bc1 2021-01-02 op if (matches(proto, c->iri.schema) &&
550 b7967bc1 2021-01-02 op matches(host, c->domain) &&
551 b7967bc1 2021-01-02 op matches(port, c->iri.port))
559 ba94a608 2022-01-04 op check_matching_certificate(X509_STORE *store, struct client *c)
561 ba94a608 2022-01-04 op const uint8_t *cert;
564 ba94a608 2022-01-04 op if (!tls_peer_cert_provided(c->ctx)) {
565 ba94a608 2022-01-04 op start_reply(c, CLIENT_CERT_REQ, "client certificate required");
569 ba94a608 2022-01-04 op cert = tls_peer_cert_chain_pem(c->ctx, &len);
570 ba94a608 2022-01-04 op if (!validate_against_ca(store, cert, len)) {
571 ba94a608 2022-01-04 op start_reply(c, CERT_NOT_AUTH, "certificate not authorised");
579 d29a2ee2 2022-09-06 op proxy_socket(struct client *c, const char *host, const char *port)
581 d29a2ee2 2022-09-06 op struct addrinfo hints, *res, *res0;
584 d29a2ee2 2022-09-06 op memset(&hints, 0, sizeof(hints));
585 d29a2ee2 2022-09-06 op hints.ai_family = AF_UNSPEC;
586 d29a2ee2 2022-09-06 op hints.ai_socktype = SOCK_STREAM;
588 d29a2ee2 2022-09-06 op /* XXX: asr_run? :> */
589 d29a2ee2 2022-09-06 op r = getaddrinfo(host, port, &hints, &res0);
590 d29a2ee2 2022-09-06 op if (r != 0) {
591 d29a2ee2 2022-09-06 op log_warn(c, "getaddrinfo(\"%s\", \"%s\"): %s",
592 d29a2ee2 2022-09-06 op host, port, gai_strerror(r));
596 d29a2ee2 2022-09-06 op for (res = res0; res; res = res->ai_next) {
597 d29a2ee2 2022-09-06 op sock = socket(res->ai_family, res->ai_socktype,
598 d29a2ee2 2022-09-06 op res->ai_protocol);
599 d29a2ee2 2022-09-06 op if (sock == -1)
602 d29a2ee2 2022-09-06 op if (connect(sock, res->ai_addr, res->ai_addrlen) == -1) {
611 d29a2ee2 2022-09-06 op freeaddrinfo(res0);
613 d29a2ee2 2022-09-06 op if (sock == -1)
614 d29a2ee2 2022-09-06 op log_warn(c, "can't connect to %s:%s", host, port);
619 72b033ef 2021-12-29 op /* 1 if matching a proxy relay-to (and apply it), 0 otherwise */
621 72b033ef 2021-12-29 op apply_reverse_proxy(struct client *c)
623 7bdcc91e 2021-01-01 op struct proxy *p;
625 b7967bc1 2021-01-02 op if ((p = matched_proxy(c)) == NULL)
628 b7967bc1 2021-01-02 op c->proxy = p;
630 ba94a608 2022-01-04 op if (p->reqca != NULL && check_matching_certificate(p->reqca, c))
633 72b033ef 2021-12-29 op log_debug(c, "opening proxy connection for %s:%s",
634 7bdcc91e 2021-01-01 op p->host, p->port);
636 d29a2ee2 2022-09-06 op if ((c->pfd = proxy_socket(c, p->host, p->port)) == -1) {
637 d29a2ee2 2022-09-06 op start_reply(c, PROXY_ERROR, "proxy error");
641 d29a2ee2 2022-09-06 op mark_nonblock(c->pfd);
642 d29a2ee2 2022-09-06 op if (proxy_init(c) == -1)
643 d29a2ee2 2022-09-06 op start_reply(c, PROXY_ERROR, "proxy error");
649 d29a2ee2 2022-09-06 op fcgi_open_sock(struct fcgi *f)
651 d29a2ee2 2022-09-06 op struct sockaddr_un addr;
654 d29a2ee2 2022-09-06 op if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
655 d29a2ee2 2022-09-06 op log_err(NULL, "socket: %s", strerror(errno));
659 d29a2ee2 2022-09-06 op memset(&addr, 0, sizeof(addr));
660 d29a2ee2 2022-09-06 op addr.sun_family = AF_UNIX;
661 d29a2ee2 2022-09-06 op strlcpy(addr.sun_path, f->path, sizeof(addr.sun_path));
663 d29a2ee2 2022-09-06 op if (connect(fd, (struct sockaddr*)&addr, sizeof(addr)) == -1) {
664 d29a2ee2 2022-09-06 op log_warn(NULL, "failed to connect to %s: %s", f->path,
665 d29a2ee2 2022-09-06 op strerror(errno));
674 d29a2ee2 2022-09-06 op fcgi_open_conn(struct fcgi *f)
676 d29a2ee2 2022-09-06 op struct addrinfo hints, *servinfo, *p;
679 d29a2ee2 2022-09-06 op memset(&hints, 0, sizeof(hints));
680 d29a2ee2 2022-09-06 op hints.ai_family = AF_UNSPEC;
681 d29a2ee2 2022-09-06 op hints.ai_socktype = SOCK_STREAM;
682 d29a2ee2 2022-09-06 op hints.ai_flags = AI_ADDRCONFIG;
684 d29a2ee2 2022-09-06 op if ((r = getaddrinfo(f->path, f->port, &hints, &servinfo)) != 0) {
685 d29a2ee2 2022-09-06 op log_warn(NULL, "getaddrinfo %s:%s: %s", f->path, f->port,
686 d29a2ee2 2022-09-06 op gai_strerror(r));
690 d29a2ee2 2022-09-06 op for (p = servinfo; p != NULL; p = p->ai_next) {
691 d29a2ee2 2022-09-06 op sock = socket(p->ai_family, p->ai_socktype, p->ai_protocol);
692 d29a2ee2 2022-09-06 op if (sock == -1)
694 d29a2ee2 2022-09-06 op if (connect(sock, p->ai_addr, p->ai_addrlen) == -1) {
701 d29a2ee2 2022-09-06 op if (p == NULL) {
702 d29a2ee2 2022-09-06 op log_warn(NULL, "couldn't connect to %s:%s", f->path, f->port);
706 d29a2ee2 2022-09-06 op freeaddrinfo(servinfo);
710 8ad1c570 2021-05-09 op /* 1 if matching `fcgi' (and apply it), 0 otherwise */
712 8ad1c570 2021-05-09 op apply_fastcgi(struct client *c)
715 8ad1c570 2021-05-09 op struct fcgi *f;
717 8ad1c570 2021-05-09 op if ((id = vhost_fastcgi(c->host, c->iri.path)) == -1)
720 4cd25209 2021-10-07 op f = &fcgi[id];
722 d29a2ee2 2022-09-06 op log_debug(c, "opening fastcgi connection for (%s,%s)",
723 d29a2ee2 2022-09-06 op f->path, f->port);
725 534afd0d 2022-10-05 op if (*f->port != '\0')
726 d29a2ee2 2022-09-06 op c->pfd = fcgi_open_sock(f);
728 d29a2ee2 2022-09-06 op c->pfd = fcgi_open_conn(f);
730 d29a2ee2 2022-09-06 op if (c->pfd == -1) {
731 d29a2ee2 2022-09-06 op start_reply(c, CGI_ERROR, "CGI error");
735 d29a2ee2 2022-09-06 op mark_nonblock(c->pfd);
737 d29a2ee2 2022-09-06 op c->cgibev = bufferevent_new(c->pfd, fcgi_read, fcgi_write,
738 d29a2ee2 2022-09-06 op fcgi_error, c);
739 d29a2ee2 2022-09-06 op if (c->cgibev == NULL) {
740 d29a2ee2 2022-09-06 op start_reply(c, TEMP_FAILURE, "internal server error");
744 d29a2ee2 2022-09-06 op bufferevent_enable(c->cgibev, EV_READ|EV_WRITE);
750 02be96c6 2021-02-09 op /* 1 if matching `require client ca' fails (and apply it), 0 otherwise */
752 02be96c6 2021-02-09 op apply_require_ca(struct client *c)
754 02be96c6 2021-02-09 op X509_STORE *store;
756 02be96c6 2021-02-09 op if ((store = vhost_require_ca(c->host, c->iri.path)) == NULL)
758 ba94a608 2022-01-04 op return check_matching_certificate(store, c);
762 abc007d2 2021-02-08 op open_dir(struct client *c)
765 11c98667 2021-04-25 op int dirfd, root;
766 252908e6 2021-01-24 op char *before_file;
768 d29a2ee2 2022-09-06 op log_debug(c, "in open_dir");
770 11c98667 2021-04-25 op root = !strcmp(c->iri.path, "/") || *c->iri.path == '\0';
772 0be51733 2021-01-20 op len = strlen(c->iri.path);
773 252908e6 2021-01-24 op if (len > 0 && !ends_with(c->iri.path, "/")) {
774 abc007d2 2021-02-08 op redirect_canonical_dir(c);
778 252908e6 2021-01-24 op strlcpy(c->sbuf, "/", sizeof(c->sbuf));
779 d1ca3911 2021-01-21 op strlcat(c->sbuf, c->iri.path, sizeof(c->sbuf));
780 d1ca3911 2021-01-21 op if (!ends_with(c->sbuf, "/"))
781 0be51733 2021-01-20 op strlcat(c->sbuf, "/", sizeof(c->sbuf));
782 252908e6 2021-01-24 op before_file = strchr(c->sbuf, '\0');
783 c8b74339 2021-01-24 op len = strlcat(c->sbuf, vhost_index(c->host, c->iri.path),
784 c8b74339 2021-01-24 op sizeof(c->sbuf));
785 252908e6 2021-01-24 op if (len >= sizeof(c->sbuf)) {
786 abc007d2 2021-02-08 op start_reply(c, TEMP_FAILURE, "internal server error");
790 252908e6 2021-01-24 op c->iri.path = c->sbuf;
792 252908e6 2021-01-24 op /* close later unless we have to generate the dir listing */
793 abc007d2 2021-02-08 op dirfd = c->pfd;
796 abc007d2 2021-02-08 op switch (check_path(c, c->iri.path, &c->pfd)) {
797 252908e6 2021-01-24 op case FILE_EXISTS:
798 efe7d180 2021-10-02 op c->type = REQUEST_FILE;
799 98ee8406 2021-02-12 op start_reply(c, SUCCESS, mime(c->host, c->iri.path));
802 252908e6 2021-01-24 op case FILE_DIRECTORY:
803 abc007d2 2021-02-08 op start_reply(c, TEMP_REDIRECT, c->sbuf);
806 252908e6 2021-01-24 op case FILE_MISSING:
807 252908e6 2021-01-24 op *before_file = '\0';
809 252908e6 2021-01-24 op if (!vhost_auto_index(c->host, c->iri.path)) {
810 abc007d2 2021-02-08 op start_reply(c, NOT_FOUND, "not found");
814 efe7d180 2021-10-02 op c->type = REQUEST_DIR;
816 e76f2c74 2021-04-25 op c->dirlen = scandir_fd(dirfd, &c->dir,
817 11c98667 2021-04-25 op root ? select_non_dotdot : select_non_dot,
819 11c98667 2021-04-25 op if (c->dirlen == -1) {
820 11c98667 2021-04-25 op log_err(c, "scandir_fd(%d) (vhost:%s) %s: %s",
821 abc007d2 2021-02-08 op c->pfd, c->host->domain, c->iri.path, strerror(errno));
822 abc007d2 2021-02-08 op start_reply(c, TEMP_FAILURE, "internal server error");
825 11c98667 2021-04-25 op c->diroff = 0;
828 4842c72d 2021-10-18 op start_reply(c, SUCCESS, "text/gemini");
829 efe7d180 2021-10-02 op evbuffer_add_printf(EVBUFFER_OUTPUT(c->bev),
830 efe7d180 2021-10-02 op "# Index of %s\n\n", c->iri.path);
834 252908e6 2021-01-24 op /* unreachable */
838 252908e6 2021-01-24 op close(dirfd);
842 abc007d2 2021-02-08 op redirect_canonical_dir(struct client *c)
846 252908e6 2021-01-24 op strlcpy(c->sbuf, "/", sizeof(c->sbuf));
847 252908e6 2021-01-24 op strlcat(c->sbuf, c->iri.path, sizeof(c->sbuf));
848 252908e6 2021-01-24 op len = strlcat(c->sbuf, "/", sizeof(c->sbuf));
850 0be51733 2021-01-20 op if (len >= sizeof(c->sbuf)) {
851 abc007d2 2021-02-08 op start_reply(c, TEMP_FAILURE, "internal server error");
855 abc007d2 2021-02-08 op start_reply(c, TEMP_REDIRECT, c->sbuf);
859 efe7d180 2021-10-02 op client_tls_readcb(int fd, short event, void *d)
861 efe7d180 2021-10-02 op struct bufferevent *bufev = d;
862 efe7d180 2021-10-02 op struct client *client = bufev->cbarg;
865 efe7d180 2021-10-02 op int what = EVBUFFER_READ;
866 efe7d180 2021-10-02 op int howmuch = IBUF_READ_SIZE;
867 efe7d180 2021-10-02 op char buf[IBUF_READ_SIZE];
869 efe7d180 2021-10-02 op if (event == EV_TIMEOUT) {
870 efe7d180 2021-10-02 op what |= EVBUFFER_TIMEOUT;
874 efe7d180 2021-10-02 op if (bufev->wm_read.high != 0)
875 efe7d180 2021-10-02 op howmuch = MIN(sizeof(buf), bufev->wm_read.high);
877 efe7d180 2021-10-02 op switch (ret = tls_read(client->ctx, buf, howmuch)) {
878 efe7d180 2021-10-02 op case TLS_WANT_POLLIN:
879 efe7d180 2021-10-02 op case TLS_WANT_POLLOUT:
882 efe7d180 2021-10-02 op what |= EVBUFFER_ERROR;
887 efe7d180 2021-10-02 op if (len == 0) {
888 efe7d180 2021-10-02 op what |= EVBUFFER_EOF;
892 efe7d180 2021-10-02 op if (evbuffer_add(bufev->input, buf, len) == -1) {
893 efe7d180 2021-10-02 op what |= EVBUFFER_ERROR;
897 efe7d180 2021-10-02 op event_add(&bufev->ev_read, NULL);
898 efe7d180 2021-10-02 op if (bufev->wm_read.low != 0 && len < bufev->wm_read.low)
900 efe7d180 2021-10-02 op if (bufev->wm_read.high != 0 && len > bufev->wm_read.high) {
902 efe7d180 2021-10-02 op * here we could implement a read pressure policy.
906 efe7d180 2021-10-02 op if (bufev->readcb != NULL)
907 efe7d180 2021-10-02 op (*bufev->readcb)(bufev, bufev->cbarg);
912 efe7d180 2021-10-02 op event_add(&bufev->ev_read, NULL);
916 efe7d180 2021-10-02 op (*bufev->errorcb)(bufev, what, bufev->cbarg);
920 efe7d180 2021-10-02 op client_tls_writecb(int fd, short event, void *d)
922 efe7d180 2021-10-02 op struct bufferevent *bufev = d;
923 efe7d180 2021-10-02 op struct client *client = bufev->cbarg;
926 efe7d180 2021-10-02 op short what = EVBUFFER_WRITE;
928 efe7d180 2021-10-02 op if (event == EV_TIMEOUT) {
929 efe7d180 2021-10-02 op what |= EVBUFFER_TIMEOUT;
933 efe7d180 2021-10-02 op if (EVBUFFER_LENGTH(bufev->output) != 0) {
934 efe7d180 2021-10-02 op ret = tls_write(client->ctx,
935 efe7d180 2021-10-02 op EVBUFFER_DATA(bufev->output),
936 efe7d180 2021-10-02 op EVBUFFER_LENGTH(bufev->output));
937 efe7d180 2021-10-02 op switch (ret) {
938 efe7d180 2021-10-02 op case TLS_WANT_POLLIN:
939 efe7d180 2021-10-02 op case TLS_WANT_POLLOUT:
942 efe7d180 2021-10-02 op what |= EVBUFFER_ERROR;
946 efe7d180 2021-10-02 op evbuffer_drain(bufev->output, len);
949 efe7d180 2021-10-02 op if (EVBUFFER_LENGTH(bufev->output) != 0)
950 efe7d180 2021-10-02 op event_add(&bufev->ev_write, NULL);
952 efe7d180 2021-10-02 op if (bufev->writecb != NULL &&
953 efe7d180 2021-10-02 op EVBUFFER_LENGTH(bufev->output) <= bufev->wm_write.low)
954 efe7d180 2021-10-02 op (*bufev->writecb)(bufev, bufev->cbarg);
958 efe7d180 2021-10-02 op event_add(&bufev->ev_write, NULL);
961 efe7d180 2021-10-02 op log_err(client, "tls error: %s", tls_error(client->ctx));
962 efe7d180 2021-10-02 op (*bufev->errorcb)(bufev, what, bufev->cbarg);
966 efe7d180 2021-10-02 op client_read(struct bufferevent *bev, void *d)
968 efe7d180 2021-10-02 op struct client *c = d;
969 efe7d180 2021-10-02 op struct evbuffer *src = EVBUFFER_INPUT(bev);
970 efe7d180 2021-10-02 op const char *parse_err = "invalid request";
971 efe7d180 2021-10-02 op char decoded[DOMAIN_NAME_LEN];
974 efe7d180 2021-10-02 op bufferevent_disable(bev, EVBUFFER_READ);
977 901905e0 2022-01-05 op * libevent2 can still somehow call this function, even
978 901905e0 2022-01-05 op * though I never enable EV_READ in the bufferevent. If
979 901905e0 2022-01-05 op * that's the case, bail out.
981 901905e0 2022-01-05 op if (c->type != REQUEST_UNDECIDED)
984 efe7d180 2021-10-02 op /* max url len + \r\n */
985 efe7d180 2021-10-02 op if (EVBUFFER_LENGTH(src) > 1024 + 2) {
986 efe7d180 2021-10-02 op log_err(c, "too much data received");
987 efe7d180 2021-10-02 op start_reply(c, BAD_REQUEST, "bad request");
991 efe7d180 2021-10-02 op c->req = evbuffer_readln(src, &len, EVBUFFER_EOL_CRLF_STRICT);
992 efe7d180 2021-10-02 op if (c->req == NULL) {
993 efe7d180 2021-10-02 op /* not enough data yet. */
994 efe7d180 2021-10-02 op bufferevent_enable(bev, EVBUFFER_READ);
997 ea27eaaa 2022-03-27 op c->reqlen = strlen(c->req);
998 ea27eaaa 2022-03-27 op if (c->reqlen > 1024+2) {
999 ea27eaaa 2022-03-27 op log_err(c, "URL too long");
1000 ea27eaaa 2022-03-27 op start_reply(c, BAD_REQUEST, "bad request");
1004 efe7d180 2021-10-02 op if (!parse_iri(c->req, &c->iri, &parse_err) ||
1005 efe7d180 2021-10-02 op !puny_decode(c->iri.host, decoded, sizeof(decoded), &parse_err)) {
1006 efe7d180 2021-10-02 op log_err(c, "IRI parse error: %s", parse_err);
1007 807a80cb 2021-10-06 op start_reply(c, BAD_REQUEST, "bad request");
1011 72b033ef 2021-12-29 op if (apply_reverse_proxy(c))
1014 52c92ef6 2021-12-09 op /* ignore the port number */
1015 52c92ef6 2021-12-09 op if (strcmp(c->iri.schema, "gemini") ||
1016 efe7d180 2021-10-02 op strcmp(decoded, c->domain)) {
1017 efe7d180 2021-10-02 op start_reply(c, PROXY_REFUSED, "won't proxy request");
1021 efe7d180 2021-10-02 op if (apply_require_ca(c) ||
1022 efe7d180 2021-10-02 op apply_block_return(c)||
1023 efe7d180 2021-10-02 op apply_fastcgi(c))
1026 efe7d180 2021-10-02 op open_file(c);
1030 efe7d180 2021-10-02 op client_write(struct bufferevent *bev, void *d)
1032 efe7d180 2021-10-02 op struct client *c = d;
1033 efe7d180 2021-10-02 op struct evbuffer *out = EVBUFFER_OUTPUT(bev);
1034 f2f8eb35 2022-07-04 op char nam[PATH_MAX];
1035 efe7d180 2021-10-02 op char buf[BUFSIZ];
1038 efe7d180 2021-10-02 op switch (c->type) {
1039 efe7d180 2021-10-02 op case REQUEST_UNDECIDED:
1041 efe7d180 2021-10-02 op * Ignore spurious calls when we still don't have idea
1042 efe7d180 2021-10-02 op * what to do with the request.
1046 efe7d180 2021-10-02 op case REQUEST_FILE:
1047 efe7d180 2021-10-02 op if ((r = read(c->pfd, buf, sizeof(buf))) == -1) {
1048 efe7d180 2021-10-02 op log_warn(c, "read: %s", strerror(errno));
1049 efe7d180 2021-10-02 op client_error(bev, EVBUFFER_ERROR, c);
1051 efe7d180 2021-10-02 op } else if (r == 0) {
1052 efe7d180 2021-10-02 op client_close(c);
1054 efe7d180 2021-10-02 op } else if (r != sizeof(buf))
1055 efe7d180 2021-10-02 op c->type = REQUEST_DONE;
1056 efe7d180 2021-10-02 op bufferevent_write(bev, buf, r);
1059 efe7d180 2021-10-02 op case REQUEST_DIR:
1060 efe7d180 2021-10-02 op /* TODO: handle big big directories better */
1061 efe7d180 2021-10-02 op for (c->diroff = 0; c->diroff < c->dirlen; ++c->diroff) {
1062 543f4a66 2022-07-04 op const char *sufx = "";
1064 f2f8eb35 2022-07-04 op encode_path(nam, sizeof(nam),
1065 efe7d180 2021-10-02 op c->dir[c->diroff]->d_name);
1066 543f4a66 2022-07-04 op if (c->dir[c->diroff]->d_type == DT_DIR)
1068 543f4a66 2022-07-04 op evbuffer_add_printf(out, "=> ./%s%s\n", nam, sufx);
1069 efe7d180 2021-10-02 op free(c->dir[c->diroff]);
1071 efe7d180 2021-10-02 op free(c->dir);
1072 efe7d180 2021-10-02 op c->dir = NULL;
1074 efe7d180 2021-10-02 op c->type = REQUEST_DONE;
1076 efe7d180 2021-10-02 op event_add(&c->bev->ev_write, NULL);
1079 efe7d180 2021-10-02 op case REQUEST_FCGI:
1080 72b033ef 2021-12-29 op case REQUEST_PROXY:
1082 d29a2ee2 2022-09-06 op * Here we depend on fastcgi or proxy connection to
1083 d29a2ee2 2022-09-06 op * provide data.
1087 efe7d180 2021-10-02 op case REQUEST_DONE:
1088 efe7d180 2021-10-02 op if (EVBUFFER_LENGTH(out) == 0)
1089 efe7d180 2021-10-02 op client_close(c);
1095 efe7d180 2021-10-02 op client_error(struct bufferevent *bev, short error, void *d)
1097 efe7d180 2021-10-02 op struct client *c = d;
1099 efe7d180 2021-10-02 op c->type = REQUEST_DONE;
1101 efe7d180 2021-10-02 op if (error & EVBUFFER_TIMEOUT) {
1102 efe7d180 2021-10-02 op log_warn(c, "timeout reached, "
1103 efe7d180 2021-10-02 op "forcefully closing the connection");
1104 efe7d180 2021-10-02 op if (c->code == 0)
1105 efe7d180 2021-10-02 op start_reply(c, BAD_REQUEST, "timeout");
1107 efe7d180 2021-10-02 op client_close(c);
1111 efe7d180 2021-10-02 op if (error & EVBUFFER_EOF) {
1112 efe7d180 2021-10-02 op client_close(c);
1116 d98ae929 2022-02-19 op log_err(c, "unknown bufferevent error %x", error);
1117 efe7d180 2021-10-02 op client_close(c);
1121 efe7d180 2021-10-02 op start_reply(struct client *c, int code, const char *meta)
1123 efe7d180 2021-10-02 op struct evbuffer *evb = EVBUFFER_OUTPUT(c->bev);
1124 efe7d180 2021-10-02 op const char *lang;
1127 efe7d180 2021-10-02 op bufferevent_enable(c->bev, EVBUFFER_WRITE);
1129 efe7d180 2021-10-02 op c->code = code;
1130 efe7d180 2021-10-02 op c->meta = meta;
1132 efe7d180 2021-10-02 op r = evbuffer_add_printf(evb, "%d %s", code, meta);
1133 efe7d180 2021-10-02 op if (r == -1)
1136 efe7d180 2021-10-02 op /* 2 digit status + space + 1024 max reply */
1137 efe7d180 2021-10-02 op if (r > 1027)
1138 efe7d180 2021-10-02 op goto overflow;
1140 d29a2ee2 2022-09-06 op if (c->type != REQUEST_FCGI &&
1141 72b033ef 2021-12-29 op c->type != REQUEST_PROXY &&
1142 efe7d180 2021-10-02 op !strcmp(meta, "text/gemini") &&
1143 efe7d180 2021-10-02 op (lang = vhost_lang(c->host, c->iri.path)) != NULL) {
1144 4842c72d 2021-10-18 op rr = evbuffer_add_printf(evb, ";lang=%s", lang);
1145 efe7d180 2021-10-02 op if (rr == -1)
1147 efe7d180 2021-10-02 op if (r + rr > 1027)
1148 efe7d180 2021-10-02 op goto overflow;
1151 efe7d180 2021-10-02 op bufferevent_write(c->bev, "\r\n", 2);
1153 efe7d180 2021-10-02 op if (!vhost_disable_log(c->host, c->iri.path))
1154 efe7d180 2021-10-02 op log_request(c, EVBUFFER_DATA(evb), EVBUFFER_LENGTH(evb));
1156 d28bd963 2022-01-27 op if (code != 20)
1157 efe7d180 2021-10-02 op c->type = REQUEST_DONE;
1162 efe7d180 2021-10-02 op log_err(c, "evbuffer_add_printf error: no memory");
1163 efe7d180 2021-10-02 op evbuffer_drain(evb, EVBUFFER_LENGTH(evb));
1164 efe7d180 2021-10-02 op client_close(c);
1168 efe7d180 2021-10-02 op log_warn(c, "reply header overflow");
1169 efe7d180 2021-10-02 op evbuffer_drain(evb, EVBUFFER_LENGTH(evb));
1170 efe7d180 2021-10-02 op start_reply(c, TEMP_FAILURE, "internal error");
1174 efe7d180 2021-10-02 op client_close_ev(int fd, short event, void *d)
1176 8ad1c570 2021-05-09 op struct client *c = d;
1178 d3a08f4d 2021-01-17 op switch (tls_close(c->ctx)) {
1179 d3a08f4d 2021-01-17 op case TLS_WANT_POLLIN:
1180 efe7d180 2021-10-02 op event_once(c->fd, EV_READ, client_close_ev, c, NULL);
1182 d3a08f4d 2021-01-17 op case TLS_WANT_POLLOUT:
1183 efe7d180 2021-10-02 op event_once(c->fd, EV_WRITE, client_close_ev, c, NULL);
1187 d3a08f4d 2021-01-17 op connected_clients--;
1189 e4daebe4 2021-10-06 op free(c->req);
1191 d3a08f4d 2021-01-17 op tls_free(c->ctx);
1192 d3a08f4d 2021-01-17 op c->ctx = NULL;
1194 efe7d180 2021-10-02 op free(c->header);
1196 abc007d2 2021-02-08 op if (c->pfd != -1)
1197 abc007d2 2021-02-08 op close(c->pfd);
1199 252908e6 2021-01-24 op if (c->dir != NULL)
1200 11c98667 2021-04-25 op free(c->dir);
1202 abc007d2 2021-02-08 op close(c->fd);
1207 72b033ef 2021-12-29 op client_proxy_close(int fd, short event, void *d)
1209 72b033ef 2021-12-29 op struct tls *ctx = d;
1211 72b033ef 2021-12-29 op if (ctx == NULL) {
1216 72b033ef 2021-12-29 op switch (tls_close(ctx)) {
1217 72b033ef 2021-12-29 op case TLS_WANT_POLLIN:
1218 72b033ef 2021-12-29 op event_once(fd, EV_READ, client_proxy_close, d, NULL);
1220 72b033ef 2021-12-29 op case TLS_WANT_POLLOUT:
1221 72b033ef 2021-12-29 op event_once(fd, EV_WRITE, client_proxy_close, d, NULL);
1225 72b033ef 2021-12-29 op tls_free(ctx);
1230 efe7d180 2021-10-02 op client_close(struct client *c)
1233 efe7d180 2021-10-02 op * We may end up calling client_close in various situations
1234 efe7d180 2021-10-02 op * and for the most unexpected reasons. Therefore, we need to
1235 b9b77f53 2022-01-27 op * ensure that everything gets properly released once we reach
1236 efe7d180 2021-10-02 op * this point.
1239 207b3e80 2021-10-07 op SPLAY_REMOVE(client_tree_id, &clients, c);
1241 efe7d180 2021-10-02 op if (c->cgibev != NULL) {
1242 efe7d180 2021-10-02 op bufferevent_disable(c->cgibev, EVBUFFER_READ|EVBUFFER_WRITE);
1243 efe7d180 2021-10-02 op bufferevent_free(c->cgibev);
1244 efe7d180 2021-10-02 op c->cgibev = NULL;
1245 efe7d180 2021-10-02 op close(c->pfd);
1246 efe7d180 2021-10-02 op c->pfd = -1;
1249 efe7d180 2021-10-02 op bufferevent_disable(c->bev, EVBUFFER_READ|EVBUFFER_WRITE);
1250 efe7d180 2021-10-02 op bufferevent_free(c->bev);
1251 efe7d180 2021-10-02 op c->bev = NULL;
1253 e0f6dc64 2022-01-27 op if (c->proxyevset &&
1254 e0f6dc64 2022-01-27 op event_pending(&c->proxyev, EV_READ|EV_WRITE, NULL)) {
1255 e0f6dc64 2022-01-27 op c->proxyevset = 0;
1256 e0f6dc64 2022-01-27 op event_del(&c->proxyev);
1259 e0f6dc64 2022-01-27 op if (c->pfd != -1 && c->proxyctx != NULL) {
1260 e0f6dc64 2022-01-27 op /* shut down the proxy TLS connection */
1261 e0f6dc64 2022-01-27 op client_proxy_close(c->pfd, 0, c->proxyctx);
1262 e0f6dc64 2022-01-27 op c->pfd = -1;
1265 e0f6dc64 2022-01-27 op if (c->proxybev != NULL)
1266 e0f6dc64 2022-01-27 op bufferevent_free(c->proxybev);
1268 efe7d180 2021-10-02 op client_close_ev(c->fd, 0, c);
1272 abc007d2 2021-02-08 op do_accept(int sock, short et, void *d)
1274 abc007d2 2021-02-08 op struct client *c;
1275 d3a08f4d 2021-01-17 op struct sockaddr_storage addr;
1276 abc007d2 2021-02-08 op struct sockaddr *saddr;
1277 d3a08f4d 2021-01-17 op socklen_t len;
1280 abc007d2 2021-02-08 op saddr = (struct sockaddr*)&addr;
1281 d3a08f4d 2021-01-17 op len = sizeof(addr);
1282 3cb3dd4d 2021-02-12 op if ((fd = accept(sock, saddr, &len)) == -1) {
1283 c62a411f 2021-10-13 op if (errno == EWOULDBLOCK || errno == EAGAIN ||
1284 c62a411f 2021-10-13 op errno == ECONNABORTED)
1286 d3a08f4d 2021-01-17 op fatal("accept: %s", strerror(errno));
1289 3cb3dd4d 2021-02-12 op mark_nonblock(fd);
1291 207b3e80 2021-10-07 op c = xcalloc(1, sizeof(*c));
1292 207b3e80 2021-10-07 op c->id = ++server_client_id;
1294 207b3e80 2021-10-07 op c->pfd = -1;
1295 207b3e80 2021-10-07 op c->addr = addr;
1297 207b3e80 2021-10-07 op if (tls_accept_socket(ctx, &c->ctx, fd) == -1) {
1298 207b3e80 2021-10-07 op log_warn(c, "failed to accept socket: %s", tls_error(c->ctx));
1299 207b3e80 2021-10-07 op close(c->fd);
1304 207b3e80 2021-10-07 op SPLAY_INSERT(client_tree_id, &clients, c);
1305 207b3e80 2021-10-07 op event_once(c->fd, EV_READ|EV_WRITE, handle_handshake, c, NULL);
1306 207b3e80 2021-10-07 op connected_clients++;
1309 8ad1c570 2021-05-09 op struct client *
1310 3fdc457c 2022-03-26 op client_by_id(int id)
1312 207b3e80 2021-10-07 op struct client find;
1314 207b3e80 2021-10-07 op find.id = id;
1315 207b3e80 2021-10-07 op return SPLAY_FIND(client_tree_id, &clients, &find);
1319 d040746a 2022-09-10 op handle_dispatch_imsg(int fd, short ev, void *d)
1321 d040746a 2022-09-10 op struct imsgbuf *ibuf = d;
1322 d040746a 2022-09-10 op struct imsg imsg;
1325 d040746a 2022-09-10 op if ((n = imsg_read(ibuf)) == -1) {
1326 d040746a 2022-09-10 op if (errno == EAGAIN || errno == EWOULDBLOCK)
1328 d040746a 2022-09-10 op fatal("imsg_read");
1332 d040746a 2022-09-10 op fatal("connection closed."); /* XXX: fatalx */
1335 d040746a 2022-09-10 op if ((n = imsg_get(ibuf, &imsg)) == -1)
1336 d040746a 2022-09-10 op fatal("imsg_get");
1340 d040746a 2022-09-10 op switch (imsg.hdr.type) {
1341 d040746a 2022-09-10 op case IMSG_QUIT:
1343 d040746a 2022-09-10 op * Don't call event_loopbreak since we want to
1344 d040746a 2022-09-10 op * finish handling the ongoing connections.
1346 d040746a 2022-09-10 op shutting_down = 1;
1348 d040746a 2022-09-10 op event_del(&e4);
1349 d040746a 2022-09-10 op if (has_ipv6)
1350 d040746a 2022-09-10 op event_del(&e6);
1351 d040746a 2022-09-10 op if (has_siginfo)
1352 d040746a 2022-09-10 op signal_del(&siginfo);
1353 d040746a 2022-09-10 op event_del(&imsgev);
1354 d040746a 2022-09-10 op signal_del(&sigusr2);
1357 d040746a 2022-09-10 op /* XXX: fatalx */
1358 d040746a 2022-09-10 op fatal("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 76000995 2022-09-06 op sandbox_server_process(conf.can_open_sockets);
1403 abc007d2 2021-02-08 op event_dispatch();
1408 207b3e80 2021-10-07 op client_tree_cmp(struct client *a, struct client *b)
1410 207b3e80 2021-10-07 op if (a->id == b->id)
1412 207b3e80 2021-10-07 op else if (a->id < b->id)
1418 207b3e80 2021-10-07 op SPLAY_GENERATE(client_tree_id, client, entry, client_tree_cmp)