2 3e4749f7 2020-10-02 op * Copyright (c) 2020 Omar Polo <op@omarpolo.com>
4 3e4749f7 2020-10-02 op * Permission to use, copy, modify, and distribute this software for any
5 3e4749f7 2020-10-02 op * purpose with or without fee is hereby granted, provided that the above
6 3e4749f7 2020-10-02 op * copyright notice and this permission notice appear in all copies.
8 3e4749f7 2020-10-02 op * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 3e4749f7 2020-10-02 op * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 3e4749f7 2020-10-02 op * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 3e4749f7 2020-10-02 op * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 3e4749f7 2020-10-02 op * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 3e4749f7 2020-10-02 op * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 3e4749f7 2020-10-02 op * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 f28f9311 2020-10-14 op #include <sys/mman.h>
18 3e4749f7 2020-10-02 op #include <sys/socket.h>
19 3e4749f7 2020-10-02 op #include <sys/stat.h>
21 3e4749f7 2020-10-02 op #include <netinet/in.h>
23 3e4749f7 2020-10-02 op #include <assert.h>
24 3e4749f7 2020-10-02 op #include <err.h>
25 592fd624 2020-10-07 op #include <errno.h>
26 3e4749f7 2020-10-02 op #include <fcntl.h>
27 592fd624 2020-10-07 op #include <poll.h>
28 0cf902af 2020-11-03 op #include <signal.h>
29 3e4749f7 2020-10-02 op #include <stdio.h>
30 3e4749f7 2020-10-02 op #include <stdlib.h>
31 3e4749f7 2020-10-02 op #include <string.h>
32 3e4749f7 2020-10-02 op #include <tls.h>
33 3e4749f7 2020-10-02 op #include <unistd.h>
35 3e4749f7 2020-10-02 op #ifndef __OpenBSD__
36 3e4749f7 2020-10-02 op # define pledge(a, b) 0
37 3e4749f7 2020-10-02 op # define unveil(a, b) 0
38 3e4749f7 2020-10-02 op #endif /* __OpenBSD__ */
40 592fd624 2020-10-07 op #ifndef INFTIM
41 592fd624 2020-10-07 op # define INFTIM -1
42 592fd624 2020-10-07 op #endif /* INFTIM */
44 3e4749f7 2020-10-02 op #define GEMINI_URL_LEN (1024+3) /* URL max len + \r\n + \0 */
46 4d4f0e19 2020-10-03 op /* large enough to hold a copy of a gemini URL and still have extra room */
47 d95b77a0 2020-10-07 op #define PATHBUF 2048
49 3e4749f7 2020-10-02 op #define SUCCESS 20
50 3e4749f7 2020-10-02 op #define NOT_FOUND 51
51 3e4749f7 2020-10-02 op #define BAD_REQUEST 59
53 592fd624 2020-10-07 op #ifndef MAX_USERS
54 592fd624 2020-10-07 op #define MAX_USERS 64
59 592fd624 2020-10-07 op S_INITIALIZING,
64 592fd624 2020-10-07 op struct client {
65 592fd624 2020-10-07 op struct tls *ctx;
68 592fd624 2020-10-07 op const char *meta;
70 f28f9311 2020-10-14 op void *buf, *i;
71 f28f9311 2020-10-14 op ssize_t len, off;
74 cc68fe70 2020-10-07 op struct etm { /* file extension to mime */
75 cc68fe70 2020-10-07 op const char *mime;
76 cc68fe70 2020-10-07 op const char *ext;
77 cc68fe70 2020-10-07 op } filetypes[] = {
78 cc68fe70 2020-10-07 op {"application/pdf", "pdf"},
80 cc68fe70 2020-10-07 op {"image/gif", "gif"},
81 cc68fe70 2020-10-07 op {"image/jpeg", "jpg"},
82 cc68fe70 2020-10-07 op {"image/jpeg", "jpeg"},
83 cc68fe70 2020-10-07 op {"image/png", "png"},
84 cc68fe70 2020-10-07 op {"image/svg+xml", "svg"},
86 cc68fe70 2020-10-07 op {"text/gemini", "gemini"},
87 cc68fe70 2020-10-07 op {"text/gemini", "gmi"},
88 cc68fe70 2020-10-07 op {"text/markdown", "markdown"},
89 cc68fe70 2020-10-07 op {"text/markdown", "md"},
90 cc68fe70 2020-10-07 op {"text/plain", "txt"},
91 dd080e1f 2020-11-05 op {"text/xml", "xml"}
98 592fd624 2020-10-07 op char *url_after_proto(char*);
99 592fd624 2020-10-07 op char *url_start_of_request(char*);
100 592fd624 2020-10-07 op int url_trim(char*);
101 592fd624 2020-10-07 op void adjust_path(char*);
102 592fd624 2020-10-07 op int path_isdir(char*);
103 f28f9311 2020-10-14 op ssize_t filesize(int);
105 592fd624 2020-10-07 op int start_reply(struct pollfd*, struct client*, int, const char*);
106 592fd624 2020-10-07 op int isdir(int);
107 cc68fe70 2020-10-07 op const char *path_ext(const char*);
108 cc68fe70 2020-10-07 op const char *mime(const char*);
109 f28f9311 2020-10-14 op int open_file(char*, struct pollfd*, struct client*);
110 592fd624 2020-10-07 op void send_file(char*, struct pollfd*, struct client*);
111 592fd624 2020-10-07 op void send_dir(char*, struct pollfd*, struct client*);
112 592fd624 2020-10-07 op void handle(struct pollfd*, struct client*);
114 592fd624 2020-10-07 op void mark_nonblock(int);
115 592fd624 2020-10-07 op int make_soket(int);
116 592fd624 2020-10-07 op void do_accept(int, struct tls*, struct pollfd*, struct client*);
117 592fd624 2020-10-07 op void goodbye(struct pollfd*, struct client*);
118 592fd624 2020-10-07 op void loop(struct tls*, int);
120 592fd624 2020-10-07 op void usage(const char*);
123 3e4749f7 2020-10-02 op url_after_proto(char *url)
126 3e4749f7 2020-10-02 op const char *proto = "gemini";
127 3e4749f7 2020-10-02 op const char *marker = "://";
129 3e4749f7 2020-10-02 op if ((s = strstr(url, marker)) == NULL)
132 3e4749f7 2020-10-02 op /* not a gemini:// URL */
134 3e4749f7 2020-10-02 op if (s - strlen(proto) < url)
137 3e4749f7 2020-10-02 op /* if (strcmp(s - strlen(proto), proto)) */
138 3e4749f7 2020-10-02 op /* return NULL; */
140 3e4749f7 2020-10-02 op /* a valid gemini:// URL */
141 3e4749f7 2020-10-02 op return s + strlen(marker);
145 3e4749f7 2020-10-02 op url_start_of_request(char *url)
149 3e4749f7 2020-10-02 op if ((s = url_after_proto(url)) == NULL)
152 3e4749f7 2020-10-02 op if ((t = strstr(s, "/")) == NULL)
153 3e4749f7 2020-10-02 op return s + strlen(s);
158 3e4749f7 2020-10-02 op url_trim(char *url)
160 3e4749f7 2020-10-02 op const char *e = "\r\n";
163 3e4749f7 2020-10-02 op if ((s = strstr(url, e)) == NULL)
168 3e4749f7 2020-10-02 op if (s[2] != '\0') {
169 4d4f0e19 2020-10-03 op fprintf(stderr, "the request was longer than 1024 bytes\n");
177 3e4749f7 2020-10-02 op adjust_path(char *path)
182 f28f9311 2020-10-14 op /* /.. -> / */
183 3e4749f7 2020-10-02 op len = strlen(path);
184 3e4749f7 2020-10-02 op if (len >= 3) {
185 3e4749f7 2020-10-02 op if (!strcmp(&path[len-3], "/..")) {
186 3e4749f7 2020-10-02 op path[len-2] = '\0';
190 3e4749f7 2020-10-02 op /* if the path is only `..` trim out and exit */
191 3e4749f7 2020-10-02 op if (!strcmp(path, "..")) {
192 3e4749f7 2020-10-02 op path[0] = '\0';
196 3e4749f7 2020-10-02 op /* remove every ../ in the path */
198 3e4749f7 2020-10-02 op if ((s = strstr(path, "../")) == NULL)
200 67328d23 2020-10-03 op memmove(s, s+3, strlen(s)+1); /* copy also the \0 */
205 3e4749f7 2020-10-02 op path_isdir(char *path)
207 3e4749f7 2020-10-02 op if (*path == '\0')
209 4d4f0e19 2020-10-03 op return path[strlen(path)-1] == '/';
213 592fd624 2020-10-07 op start_reply(struct pollfd *pfd, struct client *client, int code, const char *reason)
215 3e4749f7 2020-10-02 op char buf[1030] = {0}; /* status + ' ' + max reply len + \r\n\0 */
219 592fd624 2020-10-07 op client->code = code;
220 592fd624 2020-10-07 op client->meta = reason;
221 592fd624 2020-10-07 op client->state = S_INITIALIZING;
223 3e4749f7 2020-10-02 op len = snprintf(buf, sizeof(buf), "%d %s\r\n", code, reason);
224 3e4749f7 2020-10-02 op assert(len < (int)sizeof(buf));
225 592fd624 2020-10-07 op ret = tls_write(client->ctx, buf, len);
226 592fd624 2020-10-07 op if (ret == TLS_WANT_POLLIN) {
227 592fd624 2020-10-07 op pfd->events = POLLIN;
231 592fd624 2020-10-07 op if (ret == TLS_WANT_POLLOUT) {
232 592fd624 2020-10-07 op pfd->events = POLLOUT;
240 3e4749f7 2020-10-02 op isdir(int fd)
242 3e4749f7 2020-10-02 op struct stat sb;
244 3e4749f7 2020-10-02 op if (fstat(fd, &sb) == -1) {
245 3e4749f7 2020-10-02 op warn("fstat");
246 4d4f0e19 2020-10-03 op return 1; /* we'll probably fail later on anyway */
249 3e4749f7 2020-10-02 op return S_ISDIR(sb.st_mode);
253 f28f9311 2020-10-14 op filesize(int fd)
257 f28f9311 2020-10-14 op if ((len = lseek(fd, 0, SEEK_END)) == -1)
259 f28f9311 2020-10-14 op if (lseek(fd, 0, SEEK_SET) == -1)
265 cc68fe70 2020-10-07 op path_ext(const char *path)
267 cc68fe70 2020-10-07 op const char *end;
269 cc68fe70 2020-10-07 op end = path + strlen(path)-1; /* the last byte before the NUL */
270 cc68fe70 2020-10-07 op for (; end != path; --end) {
271 cc68fe70 2020-10-07 op if (*end == '.')
272 cc68fe70 2020-10-07 op return end+1;
273 cc68fe70 2020-10-07 op if (*end == '/')
281 cc68fe70 2020-10-07 op mime(const char *path)
283 cc68fe70 2020-10-07 op const char *ext, *def = "application/octet-stream";
284 cc68fe70 2020-10-07 op struct etm *t;
286 cc68fe70 2020-10-07 op if ((ext = path_ext(path)) == NULL)
289 cc68fe70 2020-10-07 op for (t = filetypes; t->mime != NULL; ++t)
290 cc68fe70 2020-10-07 op if (!strcmp(ext, t->ext))
291 cc68fe70 2020-10-07 op return t->mime;
297 f28f9311 2020-10-14 op open_file(char *path, struct pollfd *fds, struct client *c)
299 3e4749f7 2020-10-02 op char fpath[PATHBUF];
301 f28f9311 2020-10-14 op assert(path != NULL);
303 f28f9311 2020-10-14 op bzero(fpath, sizeof(fpath));
305 f28f9311 2020-10-14 op if (*path != '.')
306 f28f9311 2020-10-14 op fpath[0] = '.';
307 f28f9311 2020-10-14 op strlcat(fpath, path, PATHBUF);
309 f28f9311 2020-10-14 op if ((c->fd = openat(dirfd, fpath, O_RDONLY | O_NOFOLLOW)) == -1) {
310 f28f9311 2020-10-14 op warn("open: %s", fpath);
311 f28f9311 2020-10-14 op if (!start_reply(fds, c, NOT_FOUND, "not found"))
313 f28f9311 2020-10-14 op goodbye(fds, c);
317 f28f9311 2020-10-14 op if (isdir(c->fd)) {
318 f28f9311 2020-10-14 op warnx("%s is a directory, trying %s/index.gmi", fpath, fpath);
319 f28f9311 2020-10-14 op close(c->fd);
321 f28f9311 2020-10-14 op send_dir(fpath, fds, c);
325 f28f9311 2020-10-14 op if ((c->len = filesize(c->fd)) == -1) {
326 f28f9311 2020-10-14 op warn("filesize: %s", fpath);
327 f28f9311 2020-10-14 op goodbye(fds, c);
331 f28f9311 2020-10-14 op if ((c->buf = mmap(NULL, c->len, PROT_READ, MAP_PRIVATE,
332 f28f9311 2020-10-14 op c->fd, 0)) == MAP_FAILED) {
333 f28f9311 2020-10-14 op warn("mmap: %s", fpath);
334 f28f9311 2020-10-14 op goodbye(fds, c);
337 f28f9311 2020-10-14 op c->i = c->buf;
339 f28f9311 2020-10-14 op return start_reply(fds, c, SUCCESS, mime(fpath));
343 f28f9311 2020-10-14 op send_file(char *path, struct pollfd *fds, struct client *c)
345 f28f9311 2020-10-14 op ssize_t ret, len;
347 f28f9311 2020-10-14 op if (c->fd == -1) {
348 f28f9311 2020-10-14 op if (!open_file(path, fds, c))
350 f28f9311 2020-10-14 op c->state = S_SENDING;
353 f28f9311 2020-10-14 op len = (c->buf + c->len) - c->i;
355 f28f9311 2020-10-14 op while (len > 0) {
356 f28f9311 2020-10-14 op switch (ret = tls_write(c->ctx, c->i, len)) {
358 f28f9311 2020-10-14 op warnx("tls_write: %s", tls_error(c->ctx));
359 f28f9311 2020-10-14 op goodbye(fds, c);
362 f28f9311 2020-10-14 op case TLS_WANT_POLLIN:
363 f28f9311 2020-10-14 op fds->events = POLLIN;
366 f28f9311 2020-10-14 op case TLS_WANT_POLLOUT:
367 f28f9311 2020-10-14 op fds->events = POLLOUT;
377 f28f9311 2020-10-14 op goodbye(fds, c);
381 592fd624 2020-10-07 op send_dir(char *path, struct pollfd *fds, struct client *client)
383 3e4749f7 2020-10-02 op char fpath[PATHBUF];
386 3e4749f7 2020-10-02 op bzero(fpath, PATHBUF);
388 9c56b0a7 2020-10-14 op if (path[0] != '.')
389 3e4749f7 2020-10-02 op fpath[0] = '.';
391 3e4749f7 2020-10-02 op /* this cannot fail since sizeof(fpath) > maxlen of path */
392 3e4749f7 2020-10-02 op strlcat(fpath, path, PATHBUF);
393 3e4749f7 2020-10-02 op len = strlen(fpath);
395 3e4749f7 2020-10-02 op /* add a trailing / in case. */
396 3e4749f7 2020-10-02 op if (fpath[len-1] != '/') {
397 3e4749f7 2020-10-02 op fpath[len] = '/';
400 3e4749f7 2020-10-02 op strlcat(fpath, "index.gmi", sizeof(fpath));
402 592fd624 2020-10-07 op send_file(fpath, fds, client);
406 592fd624 2020-10-07 op handle(struct pollfd *fds, struct client *client)
408 592fd624 2020-10-07 op char buf[GEMINI_URL_LEN];
411 592fd624 2020-10-07 op switch (client->state) {
413 592fd624 2020-10-07 op bzero(buf, GEMINI_URL_LEN);
414 592fd624 2020-10-07 op switch (tls_read(client->ctx, buf, sizeof(buf)-1)) {
416 592fd624 2020-10-07 op warnx("tls_read: %s", tls_error(client->ctx));
417 592fd624 2020-10-07 op goodbye(fds, client);
420 592fd624 2020-10-07 op case TLS_WANT_POLLIN:
421 592fd624 2020-10-07 op fds->events = POLLIN;
424 592fd624 2020-10-07 op case TLS_WANT_POLLOUT:
425 592fd624 2020-10-07 op fds->events = POLLOUT;
429 592fd624 2020-10-07 op if (!url_trim(buf)) {
430 592fd624 2020-10-07 op if (!start_reply(fds, client, BAD_REQUEST, "bad request"))
432 592fd624 2020-10-07 op goodbye(fds, client);
436 592fd624 2020-10-07 op if ((path = url_start_of_request(buf)) == NULL) {
437 592fd624 2020-10-07 op if (!start_reply(fds, client, BAD_REQUEST, "bad request"))
439 592fd624 2020-10-07 op goodbye(fds, client);
443 592fd624 2020-10-07 op adjust_path(path);
444 592fd624 2020-10-07 op fprintf(stderr, "requested path: %s\n", path);
446 592fd624 2020-10-07 op if (path_isdir(path))
447 592fd624 2020-10-07 op send_dir(path, fds, client);
449 592fd624 2020-10-07 op send_file(path, fds, client);
452 592fd624 2020-10-07 op case S_INITIALIZING:
453 592fd624 2020-10-07 op if (!start_reply(fds, client, client->code, client->meta))
456 592fd624 2020-10-07 op if (client->code != SUCCESS) {
457 592fd624 2020-10-07 op /* we don't need a body */
458 592fd624 2020-10-07 op goodbye(fds, client);
462 592fd624 2020-10-07 op client->state = S_SENDING;
464 592fd624 2020-10-07 op /* fallthrough */
466 592fd624 2020-10-07 op case S_SENDING:
467 592fd624 2020-10-07 op send_file(NULL, fds, client);
470 592fd624 2020-10-07 op case S_CLOSING:
471 592fd624 2020-10-07 op goodbye(fds, client);
475 592fd624 2020-10-07 op /* unreachable */
481 592fd624 2020-10-07 op mark_nonblock(int fd)
485 592fd624 2020-10-07 op if ((flags = fcntl(fd, F_GETFL)) == -1)
486 592fd624 2020-10-07 op err(1, "fcntl(F_GETFL)");
487 592fd624 2020-10-07 op if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1)
488 592fd624 2020-10-07 op err(1, "fcntl(F_SETFL)");
492 9468027b 2020-10-15 op make_socket(int port, int family)
495 9468027b 2020-10-15 op struct sockaddr_in addr4;
496 9468027b 2020-10-15 op struct sockaddr_in6 addr6;
497 9468027b 2020-10-15 op struct sockaddr *addr;
498 9468027b 2020-10-15 op socklen_t len;
500 9468027b 2020-10-15 op switch (family) {
501 9468027b 2020-10-15 op case AF_INET:
502 9468027b 2020-10-15 op bzero(&addr4, sizeof(addr4));
503 9468027b 2020-10-15 op addr4.sin_family = family;
504 9468027b 2020-10-15 op addr4.sin_port = htons(port);
505 9468027b 2020-10-15 op addr4.sin_addr.s_addr = INADDR_ANY;
506 9468027b 2020-10-15 op addr = (struct sockaddr*)&addr4;
507 9468027b 2020-10-15 op len = sizeof(addr4);
510 9468027b 2020-10-15 op case AF_INET6:
511 9468027b 2020-10-15 op bzero(&addr6, sizeof(addr6));
512 9468027b 2020-10-15 op addr6.sin6_family = AF_INET6;
513 9468027b 2020-10-15 op addr6.sin6_port = htons(port);
514 9468027b 2020-10-15 op addr6.sin6_addr = in6addr_any;
515 9468027b 2020-10-15 op addr = (struct sockaddr*)&addr6;
516 9468027b 2020-10-15 op len = sizeof(addr6);
520 9468027b 2020-10-15 op /* unreachable */
524 9468027b 2020-10-15 op if ((sock = socket(family, SOCK_STREAM, 0)) == -1)
525 f28f9311 2020-10-14 op err(1, "socket");
528 3e4749f7 2020-10-02 op if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &v, sizeof(v)) == -1)
529 3e4749f7 2020-10-02 op err(1, "setsockopt(SO_REUSEADDR)");
532 3e4749f7 2020-10-02 op if (setsockopt(sock, SOL_SOCKET, SO_REUSEPORT, &v, sizeof(v)) == -1)
533 3e4749f7 2020-10-02 op err(1, "setsockopt(SO_REUSEPORT)");
535 592fd624 2020-10-07 op mark_nonblock(sock);
537 9468027b 2020-10-15 op if (bind(sock, addr, len) == -1)
538 f28f9311 2020-10-14 op err(1, "bind");
540 3e4749f7 2020-10-02 op if (listen(sock, 16) == -1)
541 f28f9311 2020-10-14 op err(1, "listen");
547 592fd624 2020-10-07 op do_accept(int sock, struct tls *ctx, struct pollfd *fds, struct client *clients)
550 592fd624 2020-10-07 op struct sockaddr_in addr;
551 3e4749f7 2020-10-02 op socklen_t len;
553 592fd624 2020-10-07 op len = sizeof(addr);
554 592fd624 2020-10-07 op if ((fd = accept(sock, (struct sockaddr*)&addr, &len)) == -1) {
555 592fd624 2020-10-07 op if (errno == EWOULDBLOCK)
557 592fd624 2020-10-07 op err(1, "accept");
560 592fd624 2020-10-07 op mark_nonblock(fd);
562 592fd624 2020-10-07 op for (i = 0; i < MAX_USERS; ++i) {
563 592fd624 2020-10-07 op if (fds[i].fd == -1) {
564 592fd624 2020-10-07 op bzero(&clients[i], sizeof(struct client));
565 592fd624 2020-10-07 op if (tls_accept_socket(ctx, &clients[i].ctx, fd) == -1)
566 592fd624 2020-10-07 op break; /* goodbye fd! */
568 592fd624 2020-10-07 op fds[i].fd = fd;
569 592fd624 2020-10-07 op fds[i].events = POLLIN;
571 592fd624 2020-10-07 op clients[i].state = S_OPEN;
572 592fd624 2020-10-07 op clients[i].fd = -1;
573 f28f9311 2020-10-14 op clients[i].buf = MAP_FAILED;
583 592fd624 2020-10-07 op goodbye(struct pollfd *pfd, struct client *c)
587 592fd624 2020-10-07 op c->state = S_CLOSING;
589 592fd624 2020-10-07 op ret = tls_close(c->ctx);
590 592fd624 2020-10-07 op if (ret == TLS_WANT_POLLIN) {
591 592fd624 2020-10-07 op pfd->events = POLLIN;
594 592fd624 2020-10-07 op if (ret == TLS_WANT_POLLOUT) {
595 592fd624 2020-10-07 op pfd->events = POLLOUT;
599 592fd624 2020-10-07 op tls_free(c->ctx);
600 592fd624 2020-10-07 op c->ctx = NULL;
602 f28f9311 2020-10-14 op if (c->buf != MAP_FAILED)
603 f28f9311 2020-10-14 op munmap(c->buf, c->len);
605 592fd624 2020-10-07 op if (c->fd != -1)
606 592fd624 2020-10-07 op close(c->fd);
608 592fd624 2020-10-07 op close(pfd->fd);
609 592fd624 2020-10-07 op pfd->fd = -1;
613 592fd624 2020-10-07 op loop(struct tls *ctx, int sock)
616 592fd624 2020-10-07 op struct client clients[MAX_USERS];
617 592fd624 2020-10-07 op struct pollfd fds[MAX_USERS];
619 592fd624 2020-10-07 op for (i = 0; i < MAX_USERS; ++i) {
620 592fd624 2020-10-07 op fds[i].fd = -1;
621 592fd624 2020-10-07 op fds[i].events = POLLIN;
622 592fd624 2020-10-07 op bzero(&clients[i], sizeof(struct client));
625 592fd624 2020-10-07 op fds[0].fd = sock;
628 f28f9311 2020-10-14 op if ((todo = poll(fds, MAX_USERS, INFTIM)) == -1)
629 592fd624 2020-10-07 op err(1, "poll");
631 592fd624 2020-10-07 op for (i = 0; i < MAX_USERS; i++) {
632 592fd624 2020-10-07 op assert(i < MAX_USERS);
634 592fd624 2020-10-07 op if (fds[i].revents == 0)
637 592fd624 2020-10-07 op if (fds[i].revents & (POLLERR|POLLNVAL))
638 592fd624 2020-10-07 op err(1, "bad fd %d", fds[i].fd);
640 592fd624 2020-10-07 op if (fds[i].revents & POLLHUP) {
641 592fd624 2020-10-07 op goodbye(&fds[i], &clients[i]);
647 592fd624 2020-10-07 op if (i == 0) { /* new client */
648 592fd624 2020-10-07 op do_accept(sock, ctx, fds, clients);
652 592fd624 2020-10-07 op handle(&fds[i], &clients[i]);
658 3e4749f7 2020-10-02 op usage(const char *me)
660 3e4749f7 2020-10-02 op fprintf(stderr,
661 3e4749f7 2020-10-02 op "USAGE: %s [-h] [-c cert.pem] [-d docs] [-k key.pem]\n",
666 3e4749f7 2020-10-02 op main(int argc, char **argv)
668 3e4749f7 2020-10-02 op const char *cert = "cert.pem", *key = "key.pem", *dir = "docs";
669 3e4749f7 2020-10-02 op struct tls *ctx = NULL;
670 3e4749f7 2020-10-02 op struct tls_config *conf;
671 3e4749f7 2020-10-02 op int sock, ch;
673 0cf902af 2020-11-03 op signal(SIGPIPE, SIG_IGN);
675 3e4749f7 2020-10-02 op while ((ch = getopt(argc, argv, "c:d:hk:")) != -1) {
676 3e4749f7 2020-10-02 op switch (ch) {
678 3e4749f7 2020-10-02 op cert = optarg;
682 3e4749f7 2020-10-02 op dir = optarg;
686 3e4749f7 2020-10-02 op usage(*argv);
690 3e4749f7 2020-10-02 op key = optarg;
694 3e4749f7 2020-10-02 op usage(*argv);
699 3e4749f7 2020-10-02 op if ((conf = tls_config_new()) == NULL)
700 3e4749f7 2020-10-02 op err(1, "tls_config_new");
702 0d8ca45a 2020-10-03 op if (tls_config_set_protocols(conf,
703 0d8ca45a 2020-10-03 op TLS_PROTOCOL_TLSv1_2 | TLS_PROTOCOL_TLSv1_3) == -1)
704 0d8ca45a 2020-10-03 op err(1, "tls_config_set_protocols");
706 4d4f0e19 2020-10-03 op if (tls_config_set_cert_file(conf, cert) == -1)
707 4d4f0e19 2020-10-03 op err(1, "tls_config_set_cert_file: %s", cert);
709 4d4f0e19 2020-10-03 op if (tls_config_set_key_file(conf, key) == -1)
710 4d4f0e19 2020-10-03 op err(1, "tls_config_set_key_file: %s", key);
712 3e4749f7 2020-10-02 op if ((ctx = tls_server()) == NULL)
713 3e4749f7 2020-10-02 op err(1, "tls_server");
715 3e4749f7 2020-10-02 op if (tls_configure(ctx, conf) == -1)
716 3e4749f7 2020-10-02 op errx(1, "tls_configure: %s", tls_error(ctx));
718 9468027b 2020-10-15 op sock = make_socket(1965, AF_INET);
720 3e4749f7 2020-10-02 op if ((dirfd = open(dir, O_RDONLY | O_DIRECTORY)) == -1)
721 3e4749f7 2020-10-02 op err(1, "open: %s", dir);
723 3e4749f7 2020-10-02 op if (unveil(dir, "r") == -1)
724 3e4749f7 2020-10-02 op err(1, "unveil");
726 3e4749f7 2020-10-02 op if (pledge("stdio rpath inet", "") == -1)
727 3e4749f7 2020-10-02 op err(1, "pledge");
729 3e4749f7 2020-10-02 op loop(ctx, sock);
732 3e4749f7 2020-10-02 op tls_free(ctx);
733 3e4749f7 2020-10-02 op tls_config_free(conf);