op public repos

Blob

Date:: Tue Jul 13 15:47:58 2021 UTC
Message:: move defaults.c decls. to their own header
Actions:: History | Blame | Raw File
1 #include <sys/socket.h>
2 
3 #include <errno.h>
4 #include <limits.h>
5 #include <signal.h>
6 #include <stdio.h>
7 #include <stdlib.h>
8 #include <string.h>
9 #include <unistd.h>
10 
11 #include "defaults.h"
12 #include "pages.h"
13 #include "parser.h"
14 #include "telescope.h"
15 #include "ui.h"
16 
17 static struct imsgev	*iev_fs, *iev_net;
18 
19 struct tabshead		 tabshead = TAILQ_HEAD_INITIALIZER(tabshead);
20 struct proxylist	 proxies = TAILQ_HEAD_INITIALIZER(proxies);
21 
22 enum telescope_process {
23 	PROC_UI,
24 	PROC_FS,
25 	PROC_NET,
26 };
27 
28 /* the first is also the fallback one */
29 static struct proto protos[] = {
30 	{ "gemini",	load_gemini_url },
31 	{ "about",	load_about_url },
32 	{ NULL, NULL },
33 };
34 
35 static void		 die(void) __attribute__((__noreturn__));
36 static struct tab	*tab_by_id(uint32_t);
37 static void		 handle_imsg_err(struct imsg*, size_t);
38 static void		 handle_imsg_check_cert(struct imsg*, size_t);
39 static void		 handle_check_cert_user_choice(int, struct tab *);
40 static void		 handle_maybe_save_new_cert(int, struct tab *);
41 static void		 handle_imsg_got_code(struct imsg*, size_t);
42 static void		 handle_imsg_got_meta(struct imsg*, size_t);
43 static void		 handle_maybe_save_page(int, struct tab *);
44 static void		 handle_save_page_path(const char *, struct tab *);
45 static void		 handle_imsg_file_opened(struct imsg*, size_t);
46 static void		 handle_imsg_buf(struct imsg*, size_t);
47 static void		 handle_imsg_eof(struct imsg*, size_t);
48 static void		 handle_imsg_bookmark_ok(struct imsg*, size_t);
49 static void		 handle_imsg_save_cert_ok(struct imsg*, size_t);
50 static void		 handle_imsg_update_cert_ok(struct imsg *, size_t);
51 static void		 handle_dispatch_imsg(int, short, void*);
52 static void		 load_page_from_str(struct tab*, const char*);
53 static void		 do_load_url(struct tab*, const char*);
54 static pid_t		 start_child(enum telescope_process, const char *, int);
55 static int		 ui_send_net(int, uint32_t, const void *, uint16_t);
56 static int		 ui_send_fs(int, uint32_t, const void *, uint16_t);
57 
58 static imsg_handlerfn *handlers[] = {
59 	[IMSG_ERR] = handle_imsg_err,
60 	[IMSG_CHECK_CERT] = handle_imsg_check_cert,
61 	[IMSG_GOT_CODE] = handle_imsg_got_code,
62 	[IMSG_GOT_META] = handle_imsg_got_meta,
63 	[IMSG_BUF] = handle_imsg_buf,
64 	[IMSG_EOF] = handle_imsg_eof,
65 	[IMSG_BOOKMARK_OK] = handle_imsg_bookmark_ok,
66 	[IMSG_SAVE_CERT_OK] = handle_imsg_save_cert_ok,
67 	[IMSG_UPDATE_CERT_OK] = handle_imsg_update_cert_ok,
68 	[IMSG_FILE_OPENED] = handle_imsg_file_opened,
69 };
70 
71 static struct ohash	certs;
72 
73 static void __attribute__((__noreturn__))
74 die(void)
75 {
76 	abort(); 		/* TODO */
77 }
78 
79 static struct tab *
80 tab_by_id(uint32_t id)
81 {
82 	struct tab *t;
83 
84 	TAILQ_FOREACH(t, &tabshead, tabs) {
85 		if (t->id == id)
86 			return t;
87 	}
88 
89 	die();
90 }
91 
92 static void
93 handle_imsg_err(struct imsg *imsg, size_t datalen)
94 {
95 	struct tab	*tab;
96 	char		*page;
97 
98 	tab = tab_by_id(imsg->hdr.peerid);
99 
100 	page = imsg->data;
101 	page[datalen-1] = '\0';
102 
103 	if (asprintf(&page, "# Error loading %s\n\n> %s\n",
104 	    tab->hist_cur->h, page) == -1)
105 		die();
106 	load_page_from_str(tab, page);
107 	free(page);
108 }
109 
110 static void
111 handle_imsg_check_cert(struct imsg *imsg, size_t datalen)
112 {
113 	const char		*hash, *host, *port;
114 	int			 tofu_res;
115 	struct tofu_entry	*e;
116 	struct tab		*tab;
117 
118 	hash = imsg->data;
119 	if (hash[datalen-1] != '\0')
120 		abort();
121 
122 	tab = tab_by_id(imsg->hdr.peerid);
123 
124 	if (tab->proxy != NULL) {
125 		host = tab->proxy->host;
126 		port = tab->proxy->port;
127 	} else {
128 		host = tab->uri.host;
129 		port = tab->uri.port;
130 	}
131 
132 	if ((e = tofu_lookup(&certs, host, port)) == NULL) {
133 		/* TODO: an update in libressl/libretls changed
134 		 * significantly.  Find a better approach at storing
135 		 * the certs! */
136 		if (datalen > sizeof(e->hash))
137 			abort();
138 
139 		tofu_res = 1;	/* trust on first use */
140 		if ((e = calloc(1, sizeof(*e))) == NULL)
141 			abort();
142 		strlcpy(e->domain, host, sizeof(e->domain));
143 		if (*port != '\0' && strcmp(port, "1965")) {
144 			strlcat(e->domain, ":", sizeof(e->domain));
145 			strlcat(e->domain, port, sizeof(e->domain));
146 		}
147 		strlcpy(e->hash, hash, sizeof(e->hash));
148 		tofu_add(&certs, e);
149 		ui_send_fs(IMSG_SAVE_CERT, tab->id, e, sizeof(*e));
150 	} else
151 		tofu_res = !strcmp(hash, e->hash);
152 
153 	if (tofu_res) {
154 		if (e->verified == -1)
155 			tab->trust = TS_TEMP_TRUSTED;
156 		else if (e->verified == 1)
157 			tab->trust = TS_VERIFIED;
158 		else
159 			tab->trust = TS_TRUSTED;
160 
161 		ui_send_net(IMSG_CERT_STATUS, imsg->hdr.peerid,
162 		    &tofu_res, sizeof(tofu_res));
163 	} else {
164 		tab->trust = TS_UNTRUSTED;
165 		load_page_from_str(tab, "# Certificate mismatch\n");
166 		if ((tab->cert = strdup(hash)) == NULL)
167 			die();
168 		ui_yornp("Certificate mismatch.  Proceed?",
169 		    handle_check_cert_user_choice, tab);
170 	}
171 }
172 
173 static void
174 handle_check_cert_user_choice(int accept, struct tab *tab)
175 {
176 	ui_send_net(IMSG_CERT_STATUS, tab->id, &accept,
177 	    sizeof(accept));
178 
179 	if (accept) {
180 		/*
181 		 * trust the certificate for this session only.  If
182 		 * the page results in a redirect while we're asking
183 		 * the user to save, we'll end up with an invalid
184 		 * tabid (one request == one tab id) and crash.  It
185 		 * also makes sense to save it for the current session
186 		 * if the user accepted it.
187 		 */
188 		tofu_temp_trust(&certs, tab->uri.host, tab->uri.port, tab->cert);
189 
190 		ui_yornp("Save the new certificate?",
191 		    handle_maybe_save_new_cert, tab);
192 	} else {
193 		free(tab->cert);
194 		tab->cert = NULL;
195 	}
196 }
197 
198 static void
199 handle_maybe_save_new_cert(int accept, struct tab *tab)
200 {
201 	struct tofu_entry *e;
202 	const char *host, *port;
203 
204 	if (tab->proxy != NULL) {
205 		host = tab->proxy->host;
206 		port = tab->proxy->port;
207 	} else {
208 		host = tab->uri.host;
209 		port = tab->uri.port;
210 	}
211 
212 	if (!accept)
213 		goto end;
214 
215 	if ((e = calloc(1, sizeof(*e))) == NULL)
216 		die();
217 
218 	strlcpy(e->domain, host, sizeof(e->domain));
219 	if (*port != '\0' && strcmp(port, "1965")) {
220 		strlcat(e->domain, ":", sizeof(e->domain));
221 		strlcat(e->domain, port, sizeof(e->domain));
222 	}
223 	strlcpy(e->hash, tab->cert, sizeof(e->hash));
224 	ui_send_fs(IMSG_UPDATE_CERT, 0, e, sizeof(*e));
225 
226 	tofu_update(&certs, e);
227 
228 	tab->trust = TS_TRUSTED;
229 
230 end:
231 	free(tab->cert);
232 	tab->cert = NULL;
233 }
234 
235 static inline int
236 normalize_code(int n)
237 {
238 	if (n < 20) {
239 		if (n == 10 || n == 11)
240 			return n;
241 		return 10;
242 	} else if (n < 30) {
243 		return 20;
244 	} else if (n < 40) {
245 		if (n == 30 || n == 31)
246 			return n;
247 		return 30;
248 	} else if (n < 50) {
249 		if (n <= 44)
250 			return n;
251 		return 40;
252 	} else if (n < 60) {
253 		if (n <= 53 || n == 59)
254 			return n;
255 		return 50;
256 	} else if (n < 70) {
257 		if (n <= 62)
258 			return n;
259 		return 60;
260 	} else
261 		return MALFORMED_RESPONSE;
262 }
263 
264 static void
265 handle_imsg_got_code(struct imsg *imsg, size_t datalen)
266 {
267 	struct tab	*tab;
268 
269 	tab = tab_by_id(imsg->hdr.peerid);
270 
271 	if (sizeof(tab->code) != datalen)
272 		die();
273 
274 	memcpy(&tab->code, imsg->data, sizeof(tab->code));
275 	tab->code = normalize_code(tab->code);
276 	if (tab->code != 30 && tab->code != 31)
277 		tab->redirect_count = 0;
278 }
279 
280 static void
281 handle_imsg_got_meta(struct imsg *imsg, size_t datalen)
282 {
283 	struct tab	*tab;
284 
285 	tab = tab_by_id(imsg->hdr.peerid);
286 
287 	if (sizeof(tab->meta) <= datalen)
288 		die();
289 
290 	memcpy(tab->meta, imsg->data, datalen);
291 
292 	if (tab->code < 10) {	/* internal errors */
293 		load_page_from_str(tab, err_pages[tab->code]);
294 	} else if (tab->code < 20) {	/* 1x */
295 		load_page_from_str(tab, err_pages[tab->code]);
296 		ui_require_input(tab, tab->code == 11);
297 	} else if (tab->code == 20) {
298 		if (setup_parser_for(tab)) {
299 			ui_send_net(IMSG_PROCEED, tab->id, NULL, 0);
300 		} else {
301 			load_page_from_str(tab, err_pages[UNKNOWN_TYPE_OR_CSET]);
302 			ui_yornp("Can't display page, wanna save?",
303 			    handle_maybe_save_page, tab);
304 		}
305 	} else if (tab->code < 40) { /* 3x */
306 		tab->redirect_count++;
307 
308 		/* TODO: make customizable? */
309 		if (tab->redirect_count > 5) {
310 			load_page_from_str(tab,
311 			    err_pages[TOO_MUCH_REDIRECTS]);
312 		} else
313 			do_load_url(tab, tab->meta);
314 	} else { /* 4x, 5x & 6x */
315 		load_page_from_str(tab, err_pages[tab->code]);
316 	}
317 }
318 
319 static void
320 handle_maybe_save_page(int dosave, struct tab *tab)
321 {
322 	if (dosave)
323 		ui_read("Save to path", handle_save_page_path, tab);
324 	else
325 		stop_tab(tab);
326 }
327 
328 static void
329 handle_save_page_path(const char *path, struct tab *tab)
330 {
331 	if (path == NULL) {
332 		stop_tab(tab);
333 		return;
334 	}
335 
336 	tab->path = strdup(path);
337 
338 	ui_send_fs(IMSG_FILE_OPEN, tab->id, path, strlen(path)+1);
339 }
340 
341 static void
342 handle_imsg_file_opened(struct imsg *imsg, size_t datalen)
343 {
344 	struct tab	*tab;
345 	char		*page;
346 	const char	*e;
347 	int		 l;
348 
349 	tab = tab_by_id(imsg->hdr.peerid);
350 
351 	if (imsg->fd == -1) {
352 		stop_tab(tab);
353 
354 		e = imsg->data;
355 		if (e[datalen-1] != '\0')
356 			die();
357 		l = asprintf(&page, "# Can't open file\n\n> %s: %s\n",
358 		    tab->path, e);
359 		if (l == -1)
360 			die();
361 		load_page_from_str(tab, page);
362 		free(page);
363 	} else {
364 		tab->fd = imsg->fd;
365 		ui_send_net(IMSG_PROCEED, tab->id, NULL, 0);
366 	}
367 }
368 
369 static void
370 handle_imsg_buf(struct imsg *imsg, size_t datalen)
371 {
372 	struct tab	*tab;
373 	int		 l;
374 	char		*page, buf[FMT_SCALED_STRSIZE] = {0};
375 
376 	tab = tab_by_id(imsg->hdr.peerid);
377 
378 	tab->bytes += datalen;
379 	if (tab->fd == -1) {
380 		if (!tab->buffer.page.parse(&tab->buffer.page,
381 		    imsg->data, datalen))
382 			die();
383 	} else {
384 		write(tab->fd, imsg->data, datalen);
385 		fmt_scaled(tab->bytes, buf);
386 		l = asprintf(&page, "Saving to \"%s\"... (%s)\n",
387 		    tab->path,
388 		    buf);
389 		if (l == -1)
390 			die();
391 		load_page_from_str(tab, page);
392 		free(page);
393 	}
394 
395 	ui_on_tab_refresh(tab);
396 }
397 
398 static void
399 handle_imsg_eof(struct imsg *imsg, size_t datalen)
400 {
401 	struct tab	*tab;
402 	int		 l;
403 	char		*page, buf[FMT_SCALED_STRSIZE] = {0};
404 
405 	tab = tab_by_id(imsg->hdr.peerid);
406 
407 	if (tab->fd == -1) {
408 		if (!tab->buffer.page.free(&tab->buffer.page))
409 			die();
410 	} else {
411 		fmt_scaled(tab->bytes, buf);
412 		l = asprintf(&page, "Saved to \"%s\" (%s)\n",
413 		    tab->path,
414 		    buf);
415 		if (l == -1)
416 			die();
417 		load_page_from_str(tab, page);
418 		free(page);
419 
420 		close(tab->fd);
421 		tab->fd = -1;
422 		free(tab->path);
423 		tab->path = NULL;
424 	}
425 
426 	ui_on_tab_refresh(tab);
427 	ui_on_tab_loaded(tab);
428 }
429 
430 static void
431 handle_imsg_bookmark_ok(struct imsg *imsg, size_t datalen)
432 {
433 	int res;
434 
435 	if (datalen != sizeof(res))
436 		die();
437 
438 	memcpy(&res, imsg->data, sizeof(res));
439 	if (res == 0)
440 		message("Added to bookmarks!");
441 	else
442 		message("Failed to add to bookmarks: %s",
443 		    strerror(res));
444 }
445 
446 static void
447 handle_imsg_save_cert_ok(struct imsg *imsg, size_t datalen)
448 {
449 	int res;
450 
451 	if (datalen != sizeof(res))
452 		die();
453 	memcpy(&res, imsg->data, datalen);
454 	if (res != 0)
455 		message("Failed to save the cert for: %s",
456 		    strerror(res));
457 }
458 
459 static void
460 handle_imsg_update_cert_ok(struct imsg *imsg, size_t datalen)
461 {
462 	int res;
463 
464 	if (datalen != sizeof(res))
465 		die();
466 	memcpy(&res, imsg->data, datalen);
467 	if (!res)
468 		message("Failed to update the certificate");
469 }
470 
471 static void
472 handle_dispatch_imsg(int fd, short ev, void *d)
473 {
474 	struct imsgev	*iev = d;
475 	dispatch_imsg(iev, ev, handlers, sizeof(handlers));
476 }
477 
478 static void
479 load_page_from_str(struct tab *tab, const char *page)
480 {
481 	erase_buffer(&tab->buffer);
482 	gemtext_initparser(&tab->buffer.page);
483 	if (!tab->buffer.page.parse(&tab->buffer.page, page, strlen(page)))
484 		die();
485 	if (!tab->buffer.page.free(&tab->buffer.page))
486 		die();
487 	ui_on_tab_refresh(tab);
488 	ui_on_tab_loaded(tab);
489 }
490 
491 void
492 load_about_url(struct tab *tab, const char *url)
493 {
494 	tab->trust = TS_VERIFIED;
495 
496 	gemtext_initparser(&tab->buffer.page);
497 
498 	ui_send_fs(IMSG_GET, tab->id,
499 	    tab->hist_cur->h, strlen(tab->hist_cur->h)+1);
500 }
501 
502 void
503 load_gemini_url(struct tab *tab, const char *url)
504 {
505 	struct get_req	 req;
506 
507 	stop_tab(tab);
508 	tab->id = tab_new_id();
509 
510 	memset(&req, 0, sizeof(req));
511 	strlcpy(req.host, tab->uri.host, sizeof(req.host));
512 	strlcpy(req.port, tab->uri.port, sizeof(req.host));
513 
514 	strlcpy(req.req, tab->hist_cur->h, sizeof(req.req));
515 	strlcat(req.req, "\r\n", sizeof(req.req));
516 
517 	req.proto = PROTO_GEMINI;
518 
519 	ui_send_net(IMSG_GET_RAW, tab->id,
520 	    &req, sizeof(req));
521 }
522 
523 void
524 load_via_proxy(struct tab *tab, const char *url, struct proxy *p)
525 {
526 	struct get_req req;
527 
528 	stop_tab(tab);
529 	tab->id = tab_new_id();
530 	tab->proxy = p;
531 
532 	memset(&req, 0, sizeof(req));
533 	strlcpy(req.host, p->host, sizeof(req.host));
534 	strlcpy(req.port, p->port, sizeof(req.host));
535 
536 	strlcpy(req.req, tab->hist_cur->h, sizeof(req.req));
537 	strlcat(req.req, "\r\n", sizeof(req.req));
538 
539 	req.proto = p->proto;
540 
541 	ui_send_net(IMSG_GET_RAW, tab->id,
542 	    &req, sizeof(req));
543 }
544 
545 static void
546 do_load_url(struct tab *tab, const char *url)
547 {
548 	struct phos_uri	 uri;
549 	struct proto	*p;
550 	struct proxy	*proxy;
551 	char		*t;
552 
553 	tab->proxy = NULL;
554 
555 	if (tab->fd != -1) {
556 		close(tab->fd);
557 		tab->fd = -1;
558 		free(tab->path);
559 		tab->path = NULL;
560 	}
561 
562 	tab->trust = TS_UNKNOWN;
563 
564 	memcpy(&uri, &tab->uri, sizeof(tab->uri));
565 	if (!phos_resolve_uri_from_str(&uri, url, &tab->uri)) {
566                 if (asprintf(&t, "#error loading %s\n>%s\n",
567 		    url, "Can't parse the URI") == -1)
568 			die();
569 		strlcpy(tab->hist_cur->h, url, sizeof(tab->hist_cur->h));
570 		load_page_from_str(tab, t);
571 		free(t);
572 		return;
573 	}
574 
575 	phos_serialize_uri(&tab->uri, tab->hist_cur->h,
576 	    sizeof(tab->hist_cur->h));
577 
578 	for (p = protos; p->schema != NULL; ++p) {
579 		if (!strcmp(tab->uri.scheme, p->schema)) {
580 			p->loadfn(tab, url);
581                         return;
582 		}
583 	}
584 
585 	TAILQ_FOREACH(proxy, &proxies, proxies) {
586 		if (!strcmp(tab->uri.scheme, proxy->match_proto)) {
587 			load_via_proxy(tab, url, proxy);
588 			return;
589 		}
590 	}
591 
592 	protos[0].loadfn(tab, url);
593 }
594 
595 void
596 load_url(struct tab *tab, const char *url)
597 {
598 	if (tab->hist_cur != NULL)
599 		hist_clear_forward(&tab->hist, TAILQ_NEXT(tab->hist_cur, entries));
600 
601 	if ((tab->hist_cur = calloc(1, sizeof(*tab->hist_cur))) == NULL) {
602 		event_loopbreak();
603 		return;
604 	}
605 
606 	hist_push(&tab->hist, tab->hist_cur);
607 	do_load_url(tab, url);
608 	erase_buffer(&tab->buffer);
609 }
610 
611 int
612 load_previous_page(struct tab *tab)
613 {
614 	struct hist	*h;
615 
616 	if ((h = TAILQ_PREV(tab->hist_cur, mhisthead, entries)) == NULL)
617 		return 0;
618 	tab->hist_cur = h;
619 	do_load_url(tab, h->h);
620 	return 1;
621 }
622 
623 int
624 load_next_page(struct tab *tab)
625 {
626 	struct hist	*h;
627 
628 	if ((h = TAILQ_NEXT(tab->hist_cur, entries)) == NULL)
629 		return 0;
630 	tab->hist_cur = h;
631 	do_load_url(tab, h->h);
632 	return 1;
633 }
634 
635 void
636 stop_tab(struct tab *tab)
637 {
638 	ui_send_net(IMSG_STOP, tab->id, NULL, 0);
639 
640 	if (tab->fd != -1) {
641 		close(tab->fd);
642 		tab->fd = -1;
643 		free(tab->path);
644 		tab->path = NULL;
645 		load_page_from_str(tab, "Stopped.\n");
646 	}
647 }
648 
649 void
650 add_to_bookmarks(const char *str)
651 {
652 	ui_send_fs(IMSG_BOOKMARK_PAGE, 0,
653 	    str, strlen(str)+1);
654 }
655 
656 void
657 save_session(void)
658 {
659 	struct tab *tab;
660 
661 	ui_send_fs(IMSG_SESSION_START, 0, NULL, 0);
662 
663 	TAILQ_FOREACH(tab, &tabshead, tabs) {
664 		ui_send_fs(IMSG_SESSION_TAB, 0,
665 		    tab->hist_cur->h, strlen(tab->hist_cur->h)+1);
666 	}
667 
668 	ui_send_fs(IMSG_SESSION_END, 0, NULL, 0);
669 }
670 
671 static void
672 session_new_tab_cb(const char *url)
673 {
674 	new_tab(url);
675 }
676 
677 static pid_t
678 start_child(enum telescope_process p, const char *argv0, int fd)
679 {
680 	const char	*argv[4];
681 	int		 argc = 0;
682 	pid_t		 pid;
683 
684 	switch (pid = fork()) {
685 	case -1:
686 		die();
687 	case 0:
688 		break;
689 	default:
690 		close(fd);
691 		return pid;
692 	}
693 
694 	if (dup2(fd, 3) == -1)
695 		err(1, "cannot setup imsg fd");
696 
697 	argv[argc++] = argv0;
698 	switch (p) {
699 	case PROC_UI:
700 		errx(1, "Can't start ui process");
701 	case PROC_FS:
702 		argv[argc++] = "-Tf";
703 		break;
704 	case PROC_NET:
705 		argv[argc++] = "-Tn";
706 		break;
707 	}
708 
709 	argv[argc++] = NULL;
710 	execvp(argv0, (char *const *)argv);
711 	err(1, "execvp(%s)", argv0);
712 }
713 
714 static int
715 ui_send_net(int type, uint32_t peerid, const void *data,
716     uint16_t datalen)
717 {
718 	return imsg_compose_event(iev_net, type, peerid, 0, -1, data,
719 	    datalen);
720 }
721 
722 static int
723 ui_send_fs(int type, uint32_t peerid, const void *data, uint16_t datalen)
724 {
725 	return imsg_compose_event(iev_fs, type, peerid, 0, -1, data,
726 	    datalen);
727 }
728 
729 static void __attribute__((noreturn))
730 usage(int r)
731 {
732 	fprintf(stderr, "USAGE: %s [-hn] [-c config] [url]\n", getprogname());
733 	fprintf(stderr, "version: " PACKAGE " " VERSION "\n");
734 	exit(r);
735 }
736 
737 int
738 main(int argc, char * const *argv)
739 {
740 	struct imsgev	 net_ibuf, fs_ibuf;
741 	int		 pipe2net[2], pipe2fs[2];
742 	int		 ch, configtest = 0, fail = 0;
743 	int		 has_url = 0;
744 	int		 proc = -1;
745 	char		 path[PATH_MAX];
746 	const char	*url = NEW_TAB_URL;
747 	const char	*argv0;
748 
749 	argv0 = argv[0];
750 
751 	signal(SIGCHLD, SIG_IGN);
752 	signal(SIGPIPE, SIG_IGN);
753 
754 	if (getenv("NO_COLOR") != NULL)
755 		enable_colors = 0;
756 
757 	strlcpy(path, getenv("HOME"), sizeof(path));
758 	strlcat(path, "/.telescope/config", sizeof(path));
759 
760 	while ((ch = getopt(argc, argv, "c:hnT:")) != -1) {
761 		switch (ch) {
762 		case 'c':
763 			fail = 1;
764 			strlcpy(path, optarg, sizeof(path));
765 			break;
766 		case 'n':
767 			configtest = 1;
768 			break;
769 		case 'h':
770 			usage(0);
771 		case 'T':
772 			switch (*optarg) {
773 			case 'f':
774 				proc = PROC_FS;
775 				break;
776 			case 'n':
777 				proc = PROC_NET;
778 				break;
779 			default:
780 				errx(1, "invalid process spec %c",
781 				    *optarg);
782 			}
783 			break;
784 		default:
785 			usage(1);
786 		}
787 	}
788 
789 	argc -= optind;
790 	argv += optind;
791 
792 	if (proc != -1) {
793 		if (argc > 0)
794 			usage(1);
795 		else if (proc == PROC_FS)
796 			return fs_main();
797 		else if (proc == PROC_NET)
798 			return client_main();
799 		else
800 			usage(1);
801 	}
802 
803 	if (argc != 0) {
804 		has_url = 1;
805 		url = argv[0];
806 	}
807 
808 	/* setup keys before reading the config */
809 	TAILQ_INIT(&global_map.m);
810 	global_map.unhandled_input = global_key_unbound;
811 	TAILQ_INIT(&minibuffer_map.m);
812 
813 	config_init();
814 	parseconfig(path, fail);
815 	if (configtest){
816 		puts("config OK");
817 		exit(0);
818 	}
819 
820 	/* Start children. */
821 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe2fs) == -1)
822 		err(1, "socketpair");
823 	start_child(PROC_FS, argv0, pipe2fs[1]);
824 	imsg_init(&fs_ibuf.ibuf, pipe2fs[0]);
825 	iev_fs = &fs_ibuf;
826 	iev_fs->handler = handle_dispatch_imsg;
827 
828 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe2net) == -1)
829 		err(1, "socketpair");
830 	start_child(PROC_NET, argv0, pipe2net[1]);
831 	imsg_init(&net_ibuf.ibuf, pipe2net[0]);
832 	iev_net = &net_ibuf;
833 	iev_net->handler = handle_dispatch_imsg;
834 
835 	setproctitle("ui");
836 
837 	/* initialize tofu & load certificates */
838 	fs_init();
839 	tofu_init(&certs, 5, offsetof(struct tofu_entry, domain));
840 	load_certs(&certs);
841 
842 	event_init();
843 
844 	/* Setup event handlers for pipes to fs/net */
845 	iev_fs->events = EV_READ;
846 	event_set(&iev_fs->ev, iev_fs->ibuf.fd, iev_fs->events,
847 	    iev_fs->handler, iev_fs);
848 	event_add(&iev_fs->ev, NULL);
849 
850 	iev_net->events = EV_READ;
851 	event_set(&iev_net->ev, iev_net->ibuf.fd, iev_net->events,
852 	    iev_net->handler, iev_net);
853 	event_add(&iev_net->ev, NULL);
854 
855 	if (ui_init()) {
856 		load_last_session(session_new_tab_cb);
857 		if (has_url || TAILQ_EMPTY(&tabshead))
858 			new_tab(url);
859 
860 		sandbox_ui_process();
861 		event_dispatch();
862 		ui_end();
863 	}
864 
865 	ui_send_fs(IMSG_QUIT, 0, NULL, 0);
866 	ui_send_net(IMSG_QUIT, 0, NULL, 0);
867 	imsg_flush(&iev_fs->ibuf);
868 
869 	return 0;
870 }