2 d3a08f4d 2021-01-17 op * Copyright (c) 2021 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>
21 d3a08f4d 2021-01-17 op #include <assert.h>
22 d3a08f4d 2021-01-17 op #include <errno.h>
23 abc007d2 2021-02-08 op #include <event.h>
24 d3a08f4d 2021-01-17 op #include <fcntl.h>
25 b4d409cf 2021-01-21 op #include <fnmatch.h>
26 2fafa2d2 2021-02-01 op #include <limits.h>
27 d3a08f4d 2021-01-17 op #include <string.h>
29 8ad1c570 2021-05-09 op struct client clients[MAX_USERS];
31 bc99d868 2021-03-19 op static struct tls *ctx;
33 bc99d868 2021-03-19 op static struct event e4, e6, imsgev, siginfo, sigusr2;
34 6b191ed5 2021-02-23 op static int has_ipv6, has_siginfo;
36 d3a08f4d 2021-01-17 op int connected_clients;
38 49b73ba1 2021-02-10 op static inline int matches(const char*, const char*);
40 74c0c7e4 2021-04-20 op static inline void yield_read(int, struct client*, statefn);
41 74c0c7e4 2021-04-20 op static inline void yield_write(int, struct client*, statefn);
43 fe406389 2021-02-02 op static int check_path(struct client*, const char*, int*);
44 abc007d2 2021-02-08 op static void open_file(struct client*);
45 abc007d2 2021-02-08 op static void check_for_cgi(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 02be96c6 2021-02-09 op static int apply_require_ca(struct client*);
51 abc007d2 2021-02-08 op static void handle_open_conn(int, short, void*);
52 abc007d2 2021-02-08 op static void handle_start_reply(int, short, void*);
53 b8e64ccd 2021-03-31 op static size_t host_nth(struct vhost*);
54 abc007d2 2021-02-08 op static void start_cgi(const char*, const char*, struct client*);
55 abc007d2 2021-02-08 op static void open_dir(struct client*);
56 abc007d2 2021-02-08 op static void redirect_canonical_dir(struct client*);
57 abc007d2 2021-02-08 op static void enter_handle_dirlist(int, short, void*);
58 abc007d2 2021-02-08 op static void handle_dirlist(int, short, void*);
59 fe406389 2021-02-02 op static int read_next_dir_entry(struct client*);
60 abc007d2 2021-02-08 op static void send_directory_listing(int, short, void*);
61 abc007d2 2021-02-08 op static void handle_cgi_reply(int, short, void*);
62 27b2fa9a 2021-02-12 op static void handle_copy(int, short, void*);
63 abc007d2 2021-02-08 op static void do_accept(int, short, void*);
64 bc99d868 2021-03-19 op static void handle_imsg_cgi_res(struct imsgbuf*, struct imsg*, size_t);
65 8ad1c570 2021-05-09 op static void handle_imsg_fcgi_fd(struct imsgbuf*, struct imsg*, size_t);
66 bc99d868 2021-03-19 op static void handle_imsg_quit(struct imsgbuf*, struct imsg*, size_t);
67 bc99d868 2021-03-19 op static void handle_siginfo(int, short, void*);
69 bc99d868 2021-03-19 op static imsg_handlerfn *handlers[] = {
70 bc99d868 2021-03-19 op [IMSG_QUIT] = handle_imsg_quit,
71 bc99d868 2021-03-19 op [IMSG_CGI_RES] = handle_imsg_cgi_res,
72 8ad1c570 2021-05-09 op [IMSG_FCGI_FD] = handle_imsg_fcgi_fd,
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);
83 abc007d2 2021-02-08 op static inline void
84 74c0c7e4 2021-04-20 op yield_read(int fd, struct client *c, statefn fn)
86 abc007d2 2021-02-08 op event_once(fd, EV_READ, fn, c, NULL);
89 c39b26d3 2021-02-12 op static inline void
90 74c0c7e4 2021-04-20 op yield_write(int fd, struct client *c, statefn fn)
92 abc007d2 2021-02-08 op event_once(fd, EV_WRITE, fn, c, NULL);
96 c8b74339 2021-01-24 op vhost_lang(struct vhost *v, const char *path)
98 c8b74339 2021-01-24 op struct location *loc;
100 caad0308 2021-01-27 op if (v == NULL || path == NULL)
103 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
104 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
105 cd761624 2021-02-06 op if (loc->lang != NULL) {
106 49b73ba1 2021-02-10 op if (matches(loc->match, path))
107 6016a593 2021-01-30 op return loc->lang;
111 b8e64ccd 2021-03-31 op return TAILQ_FIRST(&v->locations)->lang;
115 c8b74339 2021-01-24 op vhost_default_mime(struct vhost *v, const char *path)
117 c8b74339 2021-01-24 op struct location *loc;
118 c8b74339 2021-01-24 op const char *default_mime = "application/octet-stream";
120 caad0308 2021-01-27 op if (v == NULL || path == NULL)
121 caad0308 2021-01-27 op return default_mime;
123 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
124 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
125 cd761624 2021-02-06 op if (loc->default_mime != NULL) {
126 49b73ba1 2021-02-10 op if (matches(loc->match, path))
127 6016a593 2021-01-30 op return loc->default_mime;
131 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
132 b8e64ccd 2021-03-31 op if (loc->default_mime != NULL)
133 b8e64ccd 2021-03-31 op return loc->default_mime;
134 c8b74339 2021-01-24 op return default_mime;
138 c8b74339 2021-01-24 op vhost_index(struct vhost *v, const char *path)
140 c8b74339 2021-01-24 op struct location *loc;
141 c8b74339 2021-01-24 op const char *index = "index.gmi";
143 caad0308 2021-01-27 op if (v == NULL || path == NULL)
144 caad0308 2021-01-27 op return index;
146 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
147 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
148 cd761624 2021-02-06 op if (loc->index != NULL) {
149 49b73ba1 2021-02-10 op if (matches(loc->match, path))
150 6016a593 2021-01-30 op return loc->index;
154 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
155 b8e64ccd 2021-03-31 op if (loc->index != NULL)
156 b8e64ccd 2021-03-31 op return loc->index;
157 c8b74339 2021-01-24 op return index;
161 252908e6 2021-01-24 op vhost_auto_index(struct vhost *v, const char *path)
163 252908e6 2021-01-24 op struct location *loc;
165 6016a593 2021-01-30 op if (v == NULL || path == NULL)
168 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
169 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
170 cd761624 2021-02-06 op if (loc->auto_index != 0) {
171 49b73ba1 2021-02-10 op if (matches(loc->match, path))
172 6016a593 2021-01-30 op return loc->auto_index == 1;
176 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
177 b8e64ccd 2021-03-31 op return loc->auto_index == 1;
181 6abda252 2021-02-06 op vhost_block_return(struct vhost *v, const char *path, int *code, const char **fmt)
183 6abda252 2021-02-06 op struct location *loc;
185 6abda252 2021-02-06 op if (v == NULL || path == NULL)
188 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
189 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
190 cd761624 2021-02-06 op if (loc->block_code != 0) {
191 49b73ba1 2021-02-10 op if (matches(loc->match, path)) {
192 6abda252 2021-02-06 op *code = loc->block_code;
193 6abda252 2021-02-06 op *fmt = loc->block_fmt;
199 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
200 b8e64ccd 2021-03-31 op *code = loc->block_code;
201 b8e64ccd 2021-03-31 op *fmt = loc->block_fmt;
202 b8e64ccd 2021-03-31 op return loc->block_code != 0;
206 8ad1c570 2021-05-09 op vhost_fastcgi(struct vhost *v, const char *path)
208 8ad1c570 2021-05-09 op struct location *loc;
210 8ad1c570 2021-05-09 op if (v == NULL || path == NULL)
213 8ad1c570 2021-05-09 op loc = TAILQ_FIRST(&v->locations);
214 8ad1c570 2021-05-09 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
215 8ad1c570 2021-05-09 op if (loc->fcgi != -1)
216 8ad1c570 2021-05-09 op if (matches(loc->match, path))
217 8ad1c570 2021-05-09 op return loc->fcgi;
220 8ad1c570 2021-05-09 op loc = TAILQ_FIRST(&v->locations);
221 8ad1c570 2021-05-09 op return loc->fcgi;
225 1feaf2a6 2021-05-15 op vhost_dirfd(struct vhost *v, const char *path, size_t *retloc)
227 fdea6aa0 2021-04-30 op struct location *loc;
228 1feaf2a6 2021-05-15 op size_t l = 0;
230 fdea6aa0 2021-04-30 op if (v == NULL || path == NULL)
233 fdea6aa0 2021-04-30 op loc = TAILQ_FIRST(&v->locations);
234 fdea6aa0 2021-04-30 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
236 fdea6aa0 2021-04-30 op if (loc->dirfd != -1)
237 1feaf2a6 2021-05-15 op if (matches(loc->match, path)) {
239 fdea6aa0 2021-04-30 op return loc->dirfd;
244 fdea6aa0 2021-04-30 op loc = TAILQ_FIRST(&v->locations);
245 fdea6aa0 2021-04-30 op return loc->dirfd;
249 6abda252 2021-02-06 op vhost_strip(struct vhost *v, const char *path)
251 6abda252 2021-02-06 op struct location *loc;
253 6abda252 2021-02-06 op if (v == NULL || path == NULL)
256 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
257 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
258 cd761624 2021-02-06 op if (loc->strip != 0) {
259 49b73ba1 2021-02-10 op if (matches(loc->match, path))
260 6abda252 2021-02-06 op return loc->strip;
264 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
265 b8e64ccd 2021-03-31 op return loc->strip;
269 02be96c6 2021-02-09 op vhost_require_ca(struct vhost *v, const char *path)
271 02be96c6 2021-02-09 op struct location *loc;
273 02be96c6 2021-02-09 op if (v == NULL || path == NULL)
276 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
277 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
278 02be96c6 2021-02-09 op if (loc->reqca != NULL) {
279 49b73ba1 2021-02-10 op if (matches(loc->match, path))
280 02be96c6 2021-02-09 op return loc->reqca;
284 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
285 b8e64ccd 2021-03-31 op return loc->reqca;
289 793835cb 2021-02-23 op vhost_disable_log(struct vhost *v, const char *path)
291 793835cb 2021-02-23 op struct location *loc;
293 793835cb 2021-02-23 op if (v == NULL || path == NULL)
296 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
297 b8e64ccd 2021-03-31 op while ((loc = TAILQ_NEXT(loc, locations)) != NULL) {
298 793835cb 2021-02-23 op if (loc->disable_log && matches(loc->match, path))
302 b8e64ccd 2021-03-31 op loc = TAILQ_FIRST(&v->locations);
303 b8e64ccd 2021-03-31 op return loc->disable_log;
307 d3a08f4d 2021-01-17 op check_path(struct client *c, const char *path, int *fd)
309 d3a08f4d 2021-01-17 op struct stat sb;
310 d1ca3911 2021-01-21 op const char *p;
311 fdea6aa0 2021-04-30 op int flags, dirfd, strip;
313 d3a08f4d 2021-01-17 op assert(path != NULL);
316 fdea6aa0 2021-04-30 op * in send_dir we add an initial / (to be redirect-friendly),
317 fdea6aa0 2021-04-30 op * but here we want to skip it
319 fdea6aa0 2021-04-30 op if (*path == '/')
322 fdea6aa0 2021-04-30 op strip = vhost_strip(c->host, path);
323 fdea6aa0 2021-04-30 op p = strip_path(path, strip);
325 fdea6aa0 2021-04-30 op if (*p == '/')
327 fdea6aa0 2021-04-30 op if (*p == '\0')
330 1feaf2a6 2021-05-15 op dirfd = vhost_dirfd(c->host, path, &c->loc);
331 fdea6aa0 2021-04-30 op log_debug(c, "check_path: strip=%d path=%s original=%s",
332 fdea6aa0 2021-04-30 op strip, p, path);
333 252908e6 2021-01-24 op flags = O_RDONLY | O_NOFOLLOW;
334 fdea6aa0 2021-04-30 op if (*fd == -1 && (*fd = openat(dirfd, p, flags)) == -1)
335 d3a08f4d 2021-01-17 op return FILE_MISSING;
337 d3a08f4d 2021-01-17 op if (fstat(*fd, &sb) == -1) {
338 3abf91b0 2021-02-07 op log_notice(c, "failed stat for %s: %s", path, strerror(errno));
339 d3a08f4d 2021-01-17 op return FILE_MISSING;
342 d3a08f4d 2021-01-17 op if (S_ISDIR(sb.st_mode))
343 d3a08f4d 2021-01-17 op return FILE_DIRECTORY;
345 d3a08f4d 2021-01-17 op if (sb.st_mode & S_IXUSR)
346 d3a08f4d 2021-01-17 op return FILE_EXECUTABLE;
348 d3a08f4d 2021-01-17 op return FILE_EXISTS;
352 abc007d2 2021-02-08 op open_file(struct client *c)
354 abc007d2 2021-02-08 op switch (check_path(c, c->iri.path, &c->pfd)) {
355 d3a08f4d 2021-01-17 op case FILE_EXECUTABLE:
356 eecad7a3 2021-02-12 op if (c->host->cgi != NULL && matches(c->host->cgi, c->iri.path)) {
357 abc007d2 2021-02-08 op start_cgi(c->iri.path, "", c);
361 d3a08f4d 2021-01-17 op /* fallthrough */
363 d3a08f4d 2021-01-17 op case FILE_EXISTS:
364 27b2fa9a 2021-02-12 op c->next = handle_copy;
365 27b2fa9a 2021-02-12 op start_reply(c, SUCCESS, mime(c->host, c->iri.path));
368 d3a08f4d 2021-01-17 op case FILE_DIRECTORY:
372 d3a08f4d 2021-01-17 op case FILE_MISSING:
373 eecad7a3 2021-02-12 op if (c->host->cgi != NULL && matches(c->host->cgi, c->iri.path)) {
374 abc007d2 2021-02-08 op check_for_cgi(c);
377 abc007d2 2021-02-08 op start_reply(c, NOT_FOUND, "not found");
381 d3a08f4d 2021-01-17 op /* unreachable */
387 d3a08f4d 2021-01-17 op * the inverse of this algorithm, i.e. starting from the start of the
388 d3a08f4d 2021-01-17 op * path + strlen(cgi), and checking if each component, should be
389 d3a08f4d 2021-01-17 op * faster. But it's tedious to write. This does the opposite: starts
390 d3a08f4d 2021-01-17 op * from the end and strip one component at a time, until either an
391 d3a08f4d 2021-01-17 op * executable is found or we emptied the path.
394 abc007d2 2021-02-08 op check_for_cgi(struct client *c)
396 2fafa2d2 2021-02-01 op char path[PATH_MAX];
399 2fafa2d2 2021-02-01 op strlcpy(path, c->iri.path, sizeof(path));
400 d3a08f4d 2021-01-17 op end = strchr(path, '\0');
402 d3a08f4d 2021-01-17 op while (end > path) {
404 571d20fb 2021-05-15 op * go up one level. UNIX paths are simple and POSIX
405 571d20fb 2021-05-15 op * dirname, with its ambiguities on if the given
406 571d20fb 2021-05-15 op * pointer is changed or not, gives me headaches.
408 d3a08f4d 2021-01-17 op while (*end != '/')
412 abc007d2 2021-02-08 op switch (check_path(c, path, &c->pfd)) {
413 d3a08f4d 2021-01-17 op case FILE_EXECUTABLE:
414 abc007d2 2021-02-08 op start_cgi(path, end+1, c);
416 d3a08f4d 2021-01-17 op case FILE_MISSING:
427 abc007d2 2021-02-08 op start_reply(c, NOT_FOUND, "not found");
432 9b8f5ed2 2021-02-03 op mark_nonblock(int fd)
436 9b8f5ed2 2021-02-03 op if ((flags = fcntl(fd, F_GETFL)) == -1)
437 9b8f5ed2 2021-02-03 op fatal("fcntl(F_GETFL): %s", strerror(errno));
438 9b8f5ed2 2021-02-03 op if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1)
439 9b8f5ed2 2021-02-03 op fatal("fcntl(F_SETFL): %s", strerror(errno));
443 abc007d2 2021-02-08 op handle_handshake(int fd, short ev, void *d)
445 abc007d2 2021-02-08 op struct client *c = d;
446 d3a08f4d 2021-01-17 op struct vhost *h;
447 cc8c2901 2021-04-29 op struct alist *a;
448 d3a08f4d 2021-01-17 op const char *servname;
449 a8d4a897 2021-01-29 op const char *parse_err = "unknown error";
451 d3a08f4d 2021-01-17 op switch (tls_handshake(c->ctx)) {
452 d3a08f4d 2021-01-17 op case 0: /* success */
453 d3a08f4d 2021-01-17 op case -1: /* already handshaked */
455 d3a08f4d 2021-01-17 op case TLS_WANT_POLLIN:
456 74c0c7e4 2021-04-20 op yield_read(fd, c, &handle_handshake);
458 d3a08f4d 2021-01-17 op case TLS_WANT_POLLOUT:
459 74c0c7e4 2021-04-20 op yield_write(fd, c, &handle_handshake);
462 d3a08f4d 2021-01-17 op /* unreachable */
466 d3a08f4d 2021-01-17 op servname = tls_conn_servername(c->ctx);
467 a8d4a897 2021-01-29 op if (!puny_decode(servname, c->domain, sizeof(c->domain), &parse_err)) {
468 3abf91b0 2021-02-07 op log_info(c, "puny_decode: %s", parse_err);
472 b8e64ccd 2021-03-31 op TAILQ_FOREACH(h, &hosts, vhosts) {
473 eecad7a3 2021-02-12 op if (matches(h->domain, c->domain))
475 cc8c2901 2021-04-29 op TAILQ_FOREACH(a, &h->aliases, aliases) {
476 cc8c2901 2021-04-29 op if (matches(a->alias, c->domain))
482 3abf91b0 2021-02-07 op log_debug(c, "handshake: SNI: \"%s\"; decoded: \"%s\"; matched: \"%s\"",
483 3abf91b0 2021-02-07 op servname != NULL ? servname : "(null)",
485 b8e64ccd 2021-03-31 op h != NULL ? h->domain : "(null)");
487 b8e64ccd 2021-03-31 op if (h != NULL) {
489 abc007d2 2021-02-08 op handle_open_conn(fd, ev, c);
494 0ab65593 2021-01-21 op if (servname != NULL)
495 0ab65593 2021-01-21 op strncpy(c->req, servname, sizeof(c->req));
497 0ab65593 2021-01-21 op strncpy(c->req, "null", sizeof(c->req));
499 abc007d2 2021-02-08 op start_reply(c, BAD_REQUEST, "Wrong/malformed host or missing SNI");
502 91b9f2a8 2021-05-15 op static const char *
503 91b9f2a8 2021-05-15 op strip_path(const char *path, int strip)
507 6abda252 2021-02-06 op while (strip > 0) {
508 6abda252 2021-02-06 op if ((t = strchr(path, '/')) == NULL) {
509 6abda252 2021-02-06 op path = strchr(path, '\0');
520 57ec3e77 2021-02-08 op fmt_sbuf(const char *fmt, struct client *c, const char *path)
523 57ec3e77 2021-02-08 op char buf[32];
525 6abda252 2021-02-06 op memset(buf, 0, sizeof(buf));
526 6abda252 2021-02-06 op for (i = 0; *fmt; ++fmt) {
527 6abda252 2021-02-06 op if (i == sizeof(buf)-1 || *fmt == '%') {
528 6abda252 2021-02-06 op strlcat(c->sbuf, buf, sizeof(c->sbuf));
529 6abda252 2021-02-06 op memset(buf, 0, sizeof(buf));
533 6abda252 2021-02-06 op if (*fmt != '%') {
534 6abda252 2021-02-06 op buf[i++] = *fmt;
538 6abda252 2021-02-06 op switch (*++fmt) {
540 6abda252 2021-02-06 op strlcat(c->sbuf, "%", sizeof(c->sbuf));
543 737a6b50 2021-04-30 op if (*path != '/')
544 737a6b50 2021-04-30 op strlcat(c->sbuf, "/", sizeof(c->sbuf));
545 6abda252 2021-02-06 op strlcat(c->sbuf, path, sizeof(c->sbuf));
548 6abda252 2021-02-06 op strlcat(c->sbuf, c->iri.query, sizeof(c->sbuf));
551 6abda252 2021-02-06 op snprintf(buf, sizeof(buf), "%d", conf.port);
552 6abda252 2021-02-06 op strlcat(c->sbuf, buf, sizeof(c->sbuf));
553 6abda252 2021-02-06 op memset(buf, 0, sizeof(buf));
556 6abda252 2021-02-06 op strlcat(c->sbuf, c->domain, sizeof(c->sbuf));
559 6abda252 2021-02-06 op fatal("%s: unknown fmt specifier %c",
560 6abda252 2021-02-06 op __func__, *fmt);
565 6abda252 2021-02-06 op strlcat(c->sbuf, buf, sizeof(c->sbuf));
568 57ec3e77 2021-02-08 op /* 1 if a matching `block return' (and apply it), 0 otherwise */
570 57ec3e77 2021-02-08 op apply_block_return(struct client *c)
572 57ec3e77 2021-02-08 op const char *fmt, *path;
575 57ec3e77 2021-02-08 op if (!vhost_block_return(c->host, c->iri.path, &code, &fmt))
578 57ec3e77 2021-02-08 op path = strip_path(c->iri.path, vhost_strip(c->host, c->iri.path));
579 57ec3e77 2021-02-08 op fmt_sbuf(fmt, c, path);
581 abc007d2 2021-02-08 op start_reply(c, code, c->sbuf);
585 8ad1c570 2021-05-09 op /* 1 if matching `fcgi' (and apply it), 0 otherwise */
587 8ad1c570 2021-05-09 op apply_fastcgi(struct client *c)
590 8ad1c570 2021-05-09 op struct fcgi *f;
592 8ad1c570 2021-05-09 op if ((id = vhost_fastcgi(c->host, c->iri.path)) == -1)
595 8ad1c570 2021-05-09 op switch ((f = &fcgi[id])->s) {
596 8ad1c570 2021-05-09 op case FCGI_OFF:
597 8ad1c570 2021-05-09 op f->s = FCGI_INFLIGHT;
598 8ad1c570 2021-05-09 op log_info(c, "opening fastcgi connection for (%s,%s,%s)",
599 8ad1c570 2021-05-09 op f->path, f->port, f->prog);
600 8ad1c570 2021-05-09 op imsg_compose(&exibuf, IMSG_FCGI_REQ, 0, 0, -1,
601 8ad1c570 2021-05-09 op &id, sizeof(id));
602 8ad1c570 2021-05-09 op imsg_flush(&exibuf);
603 8ad1c570 2021-05-09 op /* fallthrough */
604 8ad1c570 2021-05-09 op case FCGI_INFLIGHT:
605 8ad1c570 2021-05-09 op c->fcgi = id;
607 8ad1c570 2021-05-09 op case FCGI_READY:
608 8ad1c570 2021-05-09 op c->fcgi = id;
609 8ad1c570 2021-05-09 op send_fcgi_req(f, c);
616 02be96c6 2021-02-09 op /* 1 if matching `require client ca' fails (and apply it), 0 otherwise */
618 02be96c6 2021-02-09 op apply_require_ca(struct client *c)
620 02be96c6 2021-02-09 op X509_STORE *store;
621 02be96c6 2021-02-09 op const uint8_t *cert;
624 02be96c6 2021-02-09 op if ((store = vhost_require_ca(c->host, c->iri.path)) == NULL)
627 02be96c6 2021-02-09 op if (!tls_peer_cert_provided(c->ctx)) {
628 02be96c6 2021-02-09 op start_reply(c, CLIENT_CERT_REQ, "client certificate required");
632 02be96c6 2021-02-09 op cert = tls_peer_cert_chain_pem(c->ctx, &len);
633 02be96c6 2021-02-09 op if (!validate_against_ca(store, cert, len)) {
634 02be96c6 2021-02-09 op start_reply(c, CERT_NOT_AUTH, "certificate not authorised");
642 abc007d2 2021-02-08 op handle_open_conn(int fd, short ev, void *d)
644 abc007d2 2021-02-08 op struct client *c = d;
645 d3a08f4d 2021-01-17 op const char *parse_err = "invalid request";
646 3300cbe0 2021-01-27 op char decoded[DOMAIN_NAME_LEN];
648 0be51733 2021-01-20 op bzero(c->req, sizeof(c->req));
649 0be51733 2021-01-20 op bzero(&c->iri, sizeof(c->iri));
651 0be51733 2021-01-20 op switch (tls_read(c->ctx, c->req, sizeof(c->req)-1)) {
653 3abf91b0 2021-02-07 op log_err(c, "tls_read: %s", tls_error(c->ctx));
654 abc007d2 2021-02-08 op close_conn(fd, ev, c);
657 d3a08f4d 2021-01-17 op case TLS_WANT_POLLIN:
658 74c0c7e4 2021-04-20 op yield_read(fd, c, &handle_open_conn);
661 d3a08f4d 2021-01-17 op case TLS_WANT_POLLOUT:
662 74c0c7e4 2021-04-20 op yield_write(fd, c, &handle_open_conn);
666 c4f682f8 2021-01-27 op if (!trim_req_iri(c->req, &parse_err)
667 a2fd8013 2021-01-29 op || !parse_iri(c->req, &c->iri, &parse_err)
668 a2fd8013 2021-01-29 op || !puny_decode(c->iri.host, decoded, sizeof(decoded), &parse_err)) {
669 3abf91b0 2021-02-07 op log_info(c, "iri parse error: %s", parse_err);
670 abc007d2 2021-02-08 op start_reply(c, BAD_REQUEST, "invalid request");
674 3300cbe0 2021-01-27 op if (c->iri.port_no != conf.port
675 3300cbe0 2021-01-27 op || strcmp(c->iri.schema, "gemini")
676 3300cbe0 2021-01-27 op || strcmp(decoded, c->domain)) {
677 abc007d2 2021-02-08 op start_reply(c, PROXY_REFUSED, "won't proxy request");
681 02be96c6 2021-02-09 op if (apply_require_ca(c))
684 abc007d2 2021-02-08 op if (apply_block_return(c))
687 8ad1c570 2021-05-09 op if (apply_fastcgi(c))
690 e3ddf390 2021-02-06 op if (c->host->entrypoint != NULL) {
692 abc007d2 2021-02-08 op start_cgi(c->host->entrypoint, c->iri.path, c);
696 abc007d2 2021-02-08 op open_file(c);
700 abc007d2 2021-02-08 op start_reply(struct client *c, int code, const char *meta)
702 112802ea 2021-02-01 op c->code = code;
703 112802ea 2021-02-01 op c->meta = meta;
704 abc007d2 2021-02-08 op handle_start_reply(c->fd, 0, c);
708 abc007d2 2021-02-08 op handle_start_reply(int fd, short ev, void *d)
710 abc007d2 2021-02-08 op struct client *c = d;
711 05c23a54 2021-01-19 op char buf[1030]; /* status + ' ' + max reply len + \r\n\0 */
712 c8b74339 2021-01-24 op const char *lang;
715 c8b74339 2021-01-24 op lang = vhost_lang(c->host, c->iri.path);
717 112802ea 2021-02-01 op snprintf(buf, sizeof(buf), "%d ", c->code);
718 112802ea 2021-02-01 op strlcat(buf, c->meta, sizeof(buf));
719 112802ea 2021-02-01 op if (!strcmp(c->meta, "text/gemini") && lang != NULL) {
720 05c23a54 2021-01-19 op strlcat(buf, "; lang=", sizeof(buf));
721 c8b74339 2021-01-24 op strlcat(buf, lang, sizeof(buf));
724 05c23a54 2021-01-19 op len = strlcat(buf, "\r\n", sizeof(buf));
725 0be51733 2021-01-20 op assert(len < sizeof(buf));
727 df79b4c1 2021-01-19 op switch (tls_write(c->ctx, buf, len)) {
729 abc007d2 2021-02-08 op close_conn(fd, ev, c);
731 d3a08f4d 2021-01-17 op case TLS_WANT_POLLIN:
732 74c0c7e4 2021-04-20 op yield_read(fd, c, &handle_start_reply);
734 d3a08f4d 2021-01-17 op case TLS_WANT_POLLOUT:
735 74c0c7e4 2021-04-20 op yield_write(fd, c, &handle_start_reply);
739 4604dc96 2021-02-23 op if (!vhost_disable_log(c->host, c->iri.path))
740 4604dc96 2021-02-23 op log_request(c, buf, sizeof(buf));
742 abc007d2 2021-02-08 op if (c->code != SUCCESS)
743 abc007d2 2021-02-08 op close_conn(fd, ev, c);
745 abc007d2 2021-02-08 op c->next(fd, ev, c);
748 b8e64ccd 2021-03-31 op static size_t
749 b8e64ccd 2021-03-31 op host_nth(struct vhost *h)
751 b8e64ccd 2021-03-31 op struct vhost *v;
752 b8e64ccd 2021-03-31 op size_t i = 0;
754 b8e64ccd 2021-03-31 op TAILQ_FOREACH(v, &hosts, vhosts) {
764 abc007d2 2021-02-08 op start_cgi(const char *spath, const char *relpath, struct client *c)
766 d3a08f4d 2021-01-17 op char addr[NI_MAXHOST];
767 bc99d868 2021-03-19 op const char *t;
768 bc99d868 2021-03-19 op struct cgireq req;
771 d3a08f4d 2021-01-17 op e = getnameinfo((struct sockaddr*)&c->addr, sizeof(c->addr),
772 d3a08f4d 2021-01-17 op addr, sizeof(addr),
774 d3a08f4d 2021-01-17 op NI_NUMERICHOST);
776 bc99d868 2021-03-19 op fatal("getnameinfo failed");
778 bc99d868 2021-03-19 op memset(&req, 0, sizeof(req));
780 bc99d868 2021-03-19 op memcpy(req.buf, c->req, sizeof(req.buf));
782 bc99d868 2021-03-19 op req.iri_schema_off = c->iri.schema - c->req;
783 bc99d868 2021-03-19 op req.iri_host_off = c->iri.host - c->req;
784 bc99d868 2021-03-19 op req.iri_port_off = c->iri.port - c->req;
785 bc99d868 2021-03-19 op req.iri_path_off = c->iri.path - c->req;
786 bc99d868 2021-03-19 op req.iri_query_off = c->iri.query - c->req;
787 bc99d868 2021-03-19 op req.iri_fragment_off = c->iri.fragment - c->req;
789 bc99d868 2021-03-19 op req.iri_portno = c->iri.port_no;
791 bc99d868 2021-03-19 op strlcpy(req.spath, spath, sizeof(req.spath));
792 bc99d868 2021-03-19 op strlcpy(req.relpath, relpath, sizeof(req.relpath));
793 bc99d868 2021-03-19 op strlcpy(req.addr, addr, sizeof(req.addr));
795 bc99d868 2021-03-19 op if ((t = tls_peer_cert_subject(c->ctx)) != NULL)
796 bc99d868 2021-03-19 op strlcpy(req.subject, t, sizeof(req.subject));
797 bc99d868 2021-03-19 op if ((t = tls_peer_cert_issuer(c->ctx)) != NULL)
798 bc99d868 2021-03-19 op strlcpy(req.issuer, t, sizeof(req.issuer));
799 bc99d868 2021-03-19 op if ((t = tls_peer_cert_hash(c->ctx)) != NULL)
800 bc99d868 2021-03-19 op strlcpy(req.hash, t, sizeof(req.hash));
801 89541eee 2021-04-13 op if ((t = tls_conn_version(c->ctx)) != NULL)
802 89541eee 2021-04-13 op strlcpy(req.version, t, sizeof(req.version));
803 89541eee 2021-04-13 op if ((t = tls_conn_cipher(c->ctx)) != NULL)
804 89541eee 2021-04-13 op strlcpy(req.cipher, t, sizeof(req.cipher));
806 89541eee 2021-04-13 op req.cipher_strength = tls_conn_cipher_strength(c->ctx);
807 bc99d868 2021-03-19 op req.notbefore = tls_peer_cert_notbefore(c->ctx);
808 bc99d868 2021-03-19 op req.notafter = tls_peer_cert_notafter(c->ctx);
810 b8e64ccd 2021-03-31 op req.host_off = host_nth(c->host);
811 1feaf2a6 2021-05-15 op req.loc_off = c->loc;
813 bc99d868 2021-03-19 op imsg_compose(&exibuf, IMSG_CGI_REQ, c->id, 0, -1, &req, sizeof(req));
814 bc99d868 2021-03-19 op imsg_flush(&exibuf);
816 bc99d868 2021-03-19 op close(c->pfd);
820 abc007d2 2021-02-08 op open_dir(struct client *c)
823 11c98667 2021-04-25 op int dirfd, root;
824 252908e6 2021-01-24 op char *before_file;
826 11c98667 2021-04-25 op root = !strcmp(c->iri.path, "/") || *c->iri.path == '\0';
828 0be51733 2021-01-20 op len = strlen(c->iri.path);
829 252908e6 2021-01-24 op if (len > 0 && !ends_with(c->iri.path, "/")) {
830 abc007d2 2021-02-08 op redirect_canonical_dir(c);
834 252908e6 2021-01-24 op strlcpy(c->sbuf, "/", sizeof(c->sbuf));
835 d1ca3911 2021-01-21 op strlcat(c->sbuf, c->iri.path, sizeof(c->sbuf));
836 d1ca3911 2021-01-21 op if (!ends_with(c->sbuf, "/"))
837 0be51733 2021-01-20 op strlcat(c->sbuf, "/", sizeof(c->sbuf));
838 252908e6 2021-01-24 op before_file = strchr(c->sbuf, '\0');
839 c8b74339 2021-01-24 op len = strlcat(c->sbuf, vhost_index(c->host, c->iri.path),
840 c8b74339 2021-01-24 op sizeof(c->sbuf));
841 252908e6 2021-01-24 op if (len >= sizeof(c->sbuf)) {
842 abc007d2 2021-02-08 op start_reply(c, TEMP_FAILURE, "internal server error");
846 252908e6 2021-01-24 op c->iri.path = c->sbuf;
848 252908e6 2021-01-24 op /* close later unless we have to generate the dir listing */
849 abc007d2 2021-02-08 op dirfd = c->pfd;
852 abc007d2 2021-02-08 op switch (check_path(c, c->iri.path, &c->pfd)) {
853 252908e6 2021-01-24 op case FILE_EXECUTABLE:
854 eecad7a3 2021-02-12 op if (c->host->cgi != NULL && matches(c->host->cgi, c->iri.path)) {
855 abc007d2 2021-02-08 op start_cgi(c->iri.path, "", c);
859 252908e6 2021-01-24 op /* fallthrough */
861 252908e6 2021-01-24 op case FILE_EXISTS:
862 98ee8406 2021-02-12 op c->next = handle_copy;
863 98ee8406 2021-02-12 op start_reply(c, SUCCESS, mime(c->host, c->iri.path));
866 252908e6 2021-01-24 op case FILE_DIRECTORY:
867 abc007d2 2021-02-08 op start_reply(c, TEMP_REDIRECT, c->sbuf);
870 252908e6 2021-01-24 op case FILE_MISSING:
871 252908e6 2021-01-24 op *before_file = '\0';
873 252908e6 2021-01-24 op if (!vhost_auto_index(c->host, c->iri.path)) {
874 abc007d2 2021-02-08 op start_reply(c, NOT_FOUND, "not found");
878 5f715ce4 2021-02-02 op c->next = enter_handle_dirlist;
880 e76f2c74 2021-04-25 op c->dirlen = scandir_fd(dirfd, &c->dir,
881 11c98667 2021-04-25 op root ? select_non_dotdot : select_non_dot,
883 11c98667 2021-04-25 op if (c->dirlen == -1) {
884 11c98667 2021-04-25 op log_err(c, "scandir_fd(%d) (vhost:%s) %s: %s",
885 abc007d2 2021-02-08 op c->pfd, c->host->domain, c->iri.path, strerror(errno));
886 abc007d2 2021-02-08 op start_reply(c, TEMP_FAILURE, "internal server error");
889 11c98667 2021-04-25 op c->diroff = 0;
892 abc007d2 2021-02-08 op start_reply(c, SUCCESS, "text/gemini");
896 252908e6 2021-01-24 op /* unreachable */
900 252908e6 2021-01-24 op close(dirfd);
904 abc007d2 2021-02-08 op redirect_canonical_dir(struct client *c)
908 252908e6 2021-01-24 op strlcpy(c->sbuf, "/", sizeof(c->sbuf));
909 252908e6 2021-01-24 op strlcat(c->sbuf, c->iri.path, sizeof(c->sbuf));
910 252908e6 2021-01-24 op len = strlcat(c->sbuf, "/", sizeof(c->sbuf));
912 0be51733 2021-01-20 op if (len >= sizeof(c->sbuf)) {
913 abc007d2 2021-02-08 op start_reply(c, TEMP_FAILURE, "internal server error");
917 abc007d2 2021-02-08 op start_reply(c, TEMP_REDIRECT, c->sbuf);
921 abc007d2 2021-02-08 op enter_handle_dirlist(int fd, short ev, void *d)
923 abc007d2 2021-02-08 op struct client *c = d;
924 5f715ce4 2021-02-02 op char b[PATH_MAX];
927 5f715ce4 2021-02-02 op strlcpy(b, c->iri.path, sizeof(b));
928 5f715ce4 2021-02-02 op l = snprintf(c->sbuf, sizeof(c->sbuf),
929 5f715ce4 2021-02-02 op "# Index of %s\n\n", b);
930 5f715ce4 2021-02-02 op if (l >= sizeof(c->sbuf)) {
931 5f715ce4 2021-02-02 op /* this is impossible, given that we have enough space
932 5f715ce4 2021-02-02 op * in c->sbuf to hold the ancilliary string plus the
933 5f715ce4 2021-02-02 op * full path; but it wouldn't read nice without some
934 5f715ce4 2021-02-02 op * error checking, and I'd like to avoid a strlen. */
935 abc007d2 2021-02-08 op close_conn(fd, ev, c);
940 abc007d2 2021-02-08 op handle_dirlist(fd, ev, c);
944 abc007d2 2021-02-08 op handle_dirlist(int fd, short ev, void *d)
946 abc007d2 2021-02-08 op struct client *c = d;
949 5f715ce4 2021-02-02 op while (c->len > 0) {
950 5f715ce4 2021-02-02 op switch (r = tls_write(c->ctx, c->sbuf + c->off, c->len)) {
952 abc007d2 2021-02-08 op close_conn(fd, ev, c);
954 5f715ce4 2021-02-02 op case TLS_WANT_POLLOUT:
955 74c0c7e4 2021-04-20 op yield_read(fd, c, &handle_dirlist);
957 5f715ce4 2021-02-02 op case TLS_WANT_POLLIN:
958 74c0c7e4 2021-04-20 op yield_write(fd, c, &handle_dirlist);
966 abc007d2 2021-02-08 op send_directory_listing(fd, ev, c);
970 252908e6 2021-01-24 op read_next_dir_entry(struct client *c)
972 11c98667 2021-04-25 op if (c->diroff == c->dirlen)
975 252908e6 2021-01-24 op /* XXX: url escape */
976 11c98667 2021-04-25 op snprintf(c->sbuf, sizeof(c->sbuf), "=> %s\n",
977 11c98667 2021-04-25 op c->dir[c->diroff]->d_name);
979 11c98667 2021-04-25 op free(c->dir[c->diroff]);
982 252908e6 2021-01-24 op c->len = strlen(c->sbuf);
988 abc007d2 2021-02-08 op send_directory_listing(int fd, short ev, void *d)
990 abc007d2 2021-02-08 op struct client *c = d;
994 252908e6 2021-01-24 op if (c->len == 0) {
995 252908e6 2021-01-24 op if (!read_next_dir_entry(c))
999 252908e6 2021-01-24 op while (c->len > 0) {
1000 252908e6 2021-01-24 op switch (r = tls_write(c->ctx, c->sbuf + c->off, c->len)) {
1004 252908e6 2021-01-24 op case TLS_WANT_POLLOUT:
1005 74c0c7e4 2021-04-20 op yield_read(fd, c, &send_directory_listing);
1008 252908e6 2021-01-24 op case TLS_WANT_POLLIN:
1009 74c0c7e4 2021-04-20 op yield_write(fd, c, &send_directory_listing);
1013 252908e6 2021-01-24 op c->off += r;
1014 252908e6 2021-01-24 op c->len -= r;
1021 abc007d2 2021-02-08 op close_conn(fd, ev, d);
1024 35744950 2021-02-01 op /* accumulate the meta line from the cgi script. */
1026 abc007d2 2021-02-08 op handle_cgi_reply(int fd, short ev, void *d)
1028 abc007d2 2021-02-08 op struct client *c = d;
1029 35744950 2021-02-01 op void *buf, *e;
1034 35744950 2021-02-01 op buf = c->sbuf + c->len;
1035 35744950 2021-02-01 op len = sizeof(c->sbuf) - c->len;
1037 abc007d2 2021-02-08 op r = read(c->pfd, buf, len);
1038 35744950 2021-02-01 op if (r == 0 || r == -1) {
1039 abc007d2 2021-02-08 op start_reply(c, CGI_ERROR, "CGI error");
1043 3309ef97 2021-01-23 op c->len += r;
1045 35744950 2021-02-01 op /* TODO: error if the CGI script don't reply correctly */
1046 35744950 2021-02-01 op e = strchr(c->sbuf, '\n');
1047 35744950 2021-02-01 op if (e != NULL || c->len == sizeof(c->sbuf)) {
1048 3309ef97 2021-01-23 op log_request(c, c->sbuf, c->len);
1051 27b2fa9a 2021-02-12 op handle_copy(fd, ev, c);
1055 74c0c7e4 2021-04-20 op yield_read(fd, c, &handle_cgi_reply);
1059 27b2fa9a 2021-02-12 op handle_copy(int fd, short ev, void *d)
1061 abc007d2 2021-02-08 op struct client *c = d;
1065 d3a08f4d 2021-01-17 op while (c->len > 0) {
1066 d3a08f4d 2021-01-17 op switch (r = tls_write(c->ctx, c->sbuf + c->off, c->len)) {
1070 d3a08f4d 2021-01-17 op case TLS_WANT_POLLOUT:
1071 74c0c7e4 2021-04-20 op yield_write(c->fd, c, &handle_copy);
1074 d3a08f4d 2021-01-17 op case TLS_WANT_POLLIN:
1075 74c0c7e4 2021-04-20 op yield_read(c->fd, c, &handle_copy);
1079 d3a08f4d 2021-01-17 op c->off += r;
1080 d3a08f4d 2021-01-17 op c->len -= r;
1085 27b2fa9a 2021-02-12 op switch (r = read(c->pfd, c->sbuf, sizeof(c->sbuf))) {
1089 27b2fa9a 2021-02-12 op if (errno == EAGAIN || errno == EWOULDBLOCK) {
1090 74c0c7e4 2021-04-20 op yield_read(c->pfd, c, &handle_copy);
1101 abc007d2 2021-02-08 op close_conn(c->fd, ev, d);
1105 abc007d2 2021-02-08 op close_conn(int fd, short ev, void *d)
1107 8ad1c570 2021-05-09 op struct client *c = d;
1108 8ad1c570 2021-05-09 op struct mbuf *mbuf;
1110 d3a08f4d 2021-01-17 op switch (tls_close(c->ctx)) {
1111 d3a08f4d 2021-01-17 op case TLS_WANT_POLLIN:
1112 74c0c7e4 2021-04-20 op yield_read(fd, c, &close_conn);
1114 d3a08f4d 2021-01-17 op case TLS_WANT_POLLOUT:
1115 74c0c7e4 2021-04-20 op yield_read(fd, c, &close_conn);
1119 d3a08f4d 2021-01-17 op connected_clients--;
1121 8ad1c570 2021-05-09 op while ((mbuf = TAILQ_FIRST(&c->mbufhead)) != NULL) {
1122 8ad1c570 2021-05-09 op TAILQ_REMOVE(&c->mbufhead, mbuf, mbufs);
1126 d3a08f4d 2021-01-17 op tls_free(c->ctx);
1127 d3a08f4d 2021-01-17 op c->ctx = NULL;
1129 abc007d2 2021-02-08 op if (c->pfd != -1)
1130 abc007d2 2021-02-08 op close(c->pfd);
1132 252908e6 2021-01-24 op if (c->dir != NULL)
1133 11c98667 2021-04-25 op free(c->dir);
1135 abc007d2 2021-02-08 op close(c->fd);
1140 abc007d2 2021-02-08 op do_accept(int sock, short et, void *d)
1142 abc007d2 2021-02-08 op struct client *c;
1143 d3a08f4d 2021-01-17 op struct sockaddr_storage addr;
1144 abc007d2 2021-02-08 op struct sockaddr *saddr;
1145 d3a08f4d 2021-01-17 op socklen_t len;
1150 abc007d2 2021-02-08 op saddr = (struct sockaddr*)&addr;
1151 d3a08f4d 2021-01-17 op len = sizeof(addr);
1152 3cb3dd4d 2021-02-12 op if ((fd = accept(sock, saddr, &len)) == -1) {
1153 cfb8a77f 2021-02-07 op if (errno == EWOULDBLOCK || errno == EAGAIN)
1155 d3a08f4d 2021-01-17 op fatal("accept: %s", strerror(errno));
1158 3cb3dd4d 2021-02-12 op mark_nonblock(fd);
1160 d3a08f4d 2021-01-17 op for (i = 0; i < MAX_USERS; ++i) {
1161 bc99d868 2021-03-19 op c = &clients[i];
1162 abc007d2 2021-02-08 op if (c->fd == -1) {
1163 abc007d2 2021-02-08 op memset(c, 0, sizeof(*c));
1165 bc99d868 2021-03-19 op if (tls_accept_socket(ctx, &c->ctx, fd) == -1)
1166 d3a08f4d 2021-01-17 op break; /* goodbye fd! */
1169 abc007d2 2021-02-08 op c->pfd = -1;
1170 abc007d2 2021-02-08 op c->dir = NULL;
1171 abc007d2 2021-02-08 op c->addr = addr;
1172 8ad1c570 2021-05-09 op c->fcgi = -1;
1174 74c0c7e4 2021-04-20 op yield_read(fd, c, &handle_handshake);
1175 d3a08f4d 2021-01-17 op connected_clients++;
1183 8ad1c570 2021-05-09 op static struct client *
1184 bc99d868 2021-03-19 op client_by_id(int id)
1186 bc99d868 2021-03-19 op if ((size_t)id > sizeof(clients)/sizeof(clients[0]))
1187 bc99d868 2021-03-19 op fatal("in client_by_id: invalid id %d", id);
1188 bc99d868 2021-03-19 op return &clients[id];
1191 8ad1c570 2021-05-09 op struct client *
1192 8ad1c570 2021-05-09 op try_client_by_id(int id)
1194 8ad1c570 2021-05-09 op if ((size_t)id > sizeof(clients)/sizeof(clients[0]))
1195 8ad1c570 2021-05-09 op return NULL;
1196 8ad1c570 2021-05-09 op return &clients[id];
1200 bc99d868 2021-03-19 op handle_imsg_cgi_res(struct imsgbuf *ibuf, struct imsg *imsg, size_t len)
1202 bc99d868 2021-03-19 op struct client *c;
1204 bc99d868 2021-03-19 op c = client_by_id(imsg->hdr.peerid);
1206 bc99d868 2021-03-19 op if ((c->pfd = imsg->fd) == -1)
1207 bc99d868 2021-03-19 op start_reply(c, TEMP_FAILURE, "internal server error");
1209 74c0c7e4 2021-04-20 op yield_read(c->pfd, c, &handle_cgi_reply);
1213 8ad1c570 2021-05-09 op handle_imsg_fcgi_fd(struct imsgbuf *ibuf, struct imsg *imsg, size_t len)
1215 8ad1c570 2021-05-09 op struct client *c;
1216 8ad1c570 2021-05-09 op struct fcgi *f;
1219 8ad1c570 2021-05-09 op id = imsg->hdr.peerid;
1220 8ad1c570 2021-05-09 op f = &fcgi[id];
1222 8ad1c570 2021-05-09 op if ((f->fd = imsg->fd) != -1) {
1223 8ad1c570 2021-05-09 op event_set(&f->e, imsg->fd, EV_READ | EV_PERSIST, &handle_fcgi,
1225 8ad1c570 2021-05-09 op event_add(&f->e, NULL);
1227 8ad1c570 2021-05-09 op f->s = FCGI_OFF;
1230 8ad1c570 2021-05-09 op for (i = 0; i < MAX_USERS; ++i) {
1231 8ad1c570 2021-05-09 op c = &clients[i];
1232 8ad1c570 2021-05-09 op if (c->fd == -1)
1234 8ad1c570 2021-05-09 op if (c->fcgi != id)
1237 8ad1c570 2021-05-09 op if (f->fd == -1) {
1238 8ad1c570 2021-05-09 op c->fcgi = -1;
1239 8ad1c570 2021-05-09 op start_reply(c, TEMP_FAILURE, "internal server error");
1241 8ad1c570 2021-05-09 op send_fcgi_req(f, c);
1246 bc99d868 2021-03-19 op handle_imsg_quit(struct imsgbuf *ibuf, struct imsg *imsg, size_t len)
1251 bc99d868 2021-03-19 op /* don't call event_loopbreak since we want to finish to
1252 bc99d868 2021-03-19 op * handle the ongoing connections. */
1254 a6e689d7 2021-02-12 op event_del(&e4);
1255 a6e689d7 2021-02-12 op if (has_ipv6)
1256 a6e689d7 2021-02-12 op event_del(&e6);
1257 a6e689d7 2021-02-12 op if (has_siginfo)
1258 a6e689d7 2021-02-12 op signal_del(&siginfo);
1259 bc99d868 2021-03-19 op event_del(&imsgev);
1260 a6e689d7 2021-02-12 op signal_del(&sigusr2);
1264 bc99d868 2021-03-19 op handle_dispatch_imsg(int fd, short ev, void *d)
1266 bc99d868 2021-03-19 op struct imsgbuf *ibuf = d;
1267 bc99d868 2021-03-19 op dispatch_imsg(ibuf, handlers, sizeof(handlers));
1271 abc007d2 2021-02-08 op handle_siginfo(int fd, short ev, void *d)
1277 abc007d2 2021-02-08 op log_info(NULL, "%d connected clients", connected_clients);
1281 bc99d868 2021-03-19 op loop(struct tls *ctx_, int sock4, int sock6, struct imsgbuf *ibuf)
1287 abc007d2 2021-02-08 op event_init();
1289 bc99d868 2021-03-19 op memset(&clients, 0, sizeof(clients));
1290 abc007d2 2021-02-08 op for (i = 0; i < MAX_USERS; ++i)
1291 bc99d868 2021-03-19 op clients[i].fd = -1;
1293 bc99d868 2021-03-19 op event_set(&e4, sock4, EV_READ | EV_PERSIST, &do_accept, NULL);
1294 a6e689d7 2021-02-12 op event_add(&e4, NULL);
1296 abc007d2 2021-02-08 op if (sock6 != -1) {
1297 a6e689d7 2021-02-12 op has_ipv6 = 1;
1298 bc99d868 2021-03-19 op event_set(&e6, sock6, EV_READ | EV_PERSIST, &do_accept, NULL);
1299 a6e689d7 2021-02-12 op event_add(&e6, NULL);
1302 bc99d868 2021-03-19 op event_set(&imsgev, ibuf->fd, EV_READ | EV_PERSIST, handle_dispatch_imsg, ibuf);
1303 bc99d868 2021-03-19 op event_add(&imsgev, NULL);
1305 abc007d2 2021-02-08 op #ifdef SIGINFO
1306 a6e689d7 2021-02-12 op has_siginfo = 1;
1307 a6e689d7 2021-02-12 op signal_set(&siginfo, SIGINFO, &handle_siginfo, NULL);
1308 a6e689d7 2021-02-12 op signal_add(&siginfo, NULL);
1310 5e3285d5 2021-02-12 op signal_set(&sigusr2, SIGUSR2, &handle_siginfo, NULL);
1311 a6e689d7 2021-02-12 op signal_add(&sigusr2, NULL);
1313 62e001b0 2021-03-20 op sandbox_server_process();
1314 abc007d2 2021-02-08 op event_dispatch();
