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Date:: Tue Jul 13 13:28:06 2021 UTC
Message:: move pages decl. to their own header
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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 "pages.h"
12 #include "parser.h"
13 #include "telescope.h"
14 #include "ui.h"
15 
16 static struct imsgev	*iev_fs, *iev_net;
17 
18 struct tabshead		 tabshead = TAILQ_HEAD_INITIALIZER(tabshead);
19 struct proxylist	 proxies = TAILQ_HEAD_INITIALIZER(proxies);
20 
21 enum telescope_process {
22 	PROC_UI,
23 	PROC_FS,
24 	PROC_NET,
25 };
26 
27 /* the first is also the fallback one */
28 static struct proto protos[] = {
29 	{ "gemini",	load_gemini_url },
30 	{ "about",	load_about_url },
31 	{ NULL, NULL },
32 };
33 
34 static void		 die(void) __attribute__((__noreturn__));
35 static struct tab	*tab_by_id(uint32_t);
36 static void		 handle_imsg_err(struct imsg*, size_t);
37 static void		 handle_imsg_check_cert(struct imsg*, size_t);
38 static void		 handle_check_cert_user_choice(int, struct tab *);
39 static void		 handle_maybe_save_new_cert(int, struct tab *);
40 static void		 handle_imsg_got_code(struct imsg*, size_t);
41 static void		 handle_imsg_got_meta(struct imsg*, size_t);
42 static void		 handle_maybe_save_page(int, struct tab *);
43 static void		 handle_save_page_path(const char *, unsigned int);
44 static void		 handle_imsg_file_opened(struct imsg*, size_t);
45 static void		 handle_imsg_buf(struct imsg*, size_t);
46 static void		 handle_imsg_eof(struct imsg*, size_t);
47 static void		 handle_imsg_bookmark_ok(struct imsg*, size_t);
48 static void		 handle_imsg_save_cert_ok(struct imsg*, size_t);
49 static void		 handle_imsg_update_cert_ok(struct imsg *, size_t);
50 static void		 handle_dispatch_imsg(int, short, void*);
51 static void		 load_page_from_str(struct tab*, const char*);
52 static void		 do_load_url(struct tab*, const char*);
53 static pid_t		 start_child(enum telescope_process, const char *, int);
54 static int		 ui_send_net(int, uint32_t, const void *, uint16_t);
55 static int		 ui_send_fs(int, uint32_t, const void *, uint16_t);
56 
57 static imsg_handlerfn *handlers[] = {
58 	[IMSG_ERR] = handle_imsg_err,
59 	[IMSG_CHECK_CERT] = handle_imsg_check_cert,
60 	[IMSG_GOT_CODE] = handle_imsg_got_code,
61 	[IMSG_GOT_META] = handle_imsg_got_meta,
62 	[IMSG_BUF] = handle_imsg_buf,
63 	[IMSG_EOF] = handle_imsg_eof,
64 	[IMSG_BOOKMARK_OK] = handle_imsg_bookmark_ok,
65 	[IMSG_SAVE_CERT_OK] = handle_imsg_save_cert_ok,
66 	[IMSG_UPDATE_CERT_OK] = handle_imsg_update_cert_ok,
67 	[IMSG_FILE_OPENED] = handle_imsg_file_opened,
68 };
69 
70 static struct ohash	certs;
71 
72 static void __attribute__((__noreturn__))
73 die(void)
74 {
75 	abort(); 		/* TODO */
76 }
77 
78 static struct tab *
79 tab_by_id(uint32_t id)
80 {
81 	struct tab *t;
82 
83 	TAILQ_FOREACH(t, &tabshead, tabs) {
84 		if (t->id == id)
85 			return t;
86 	}
87 
88 	die();
89 }
90 
91 static void
92 handle_imsg_err(struct imsg *imsg, size_t datalen)
93 {
94 	struct tab	*tab;
95 	char		*page;
96 
97 	tab = tab_by_id(imsg->hdr.peerid);
98 
99 	page = imsg->data;
100 	page[datalen-1] = '\0';
101 
102 	if (asprintf(&page, "# Error loading %s\n\n> %s\n",
103 	    tab->hist_cur->h, page) == -1)
104 		die();
105 	load_page_from_str(tab, page);
106 	free(page);
107 }
108 
109 static void
110 handle_imsg_check_cert(struct imsg *imsg, size_t datalen)
111 {
112 	const char		*hash, *host, *port;
113 	int			 tofu_res;
114 	struct tofu_entry	*e;
115 	struct tab		*tab;
116 
117 	hash = imsg->data;
118 	if (hash[datalen-1] != '\0')
119 		abort();
120 
121 	tab = tab_by_id(imsg->hdr.peerid);
122 
123 	if (tab->proxy != NULL) {
124 		host = tab->proxy->host;
125 		port = tab->proxy->port;
126 	} else {
127 		host = tab->uri.host;
128 		port = tab->uri.port;
129 	}
130 
131 	if ((e = tofu_lookup(&certs, host, port)) == NULL) {
132 		/* TODO: an update in libressl/libretls changed
133 		 * significantly.  Find a better approach at storing
134 		 * the certs! */
135 		if (datalen > sizeof(e->hash))
136 			abort();
137 
138 		tofu_res = 1;	/* trust on first use */
139 		if ((e = calloc(1, sizeof(*e))) == NULL)
140 			abort();
141 		strlcpy(e->domain, host, sizeof(e->domain));
142 		if (*port != '\0' && strcmp(port, "1965")) {
143 			strlcat(e->domain, ":", sizeof(e->domain));
144 			strlcat(e->domain, port, sizeof(e->domain));
145 		}
146 		strlcpy(e->hash, hash, sizeof(e->hash));
147 		tofu_add(&certs, e);
148 		ui_send_fs(IMSG_SAVE_CERT, tab->id, e, sizeof(*e));
149 	} else
150 		tofu_res = !strcmp(hash, e->hash);
151 
152 	if (tofu_res) {
153 		if (e->verified == -1)
154 			tab->trust = TS_TEMP_TRUSTED;
155 		else if (e->verified == 1)
156 			tab->trust = TS_VERIFIED;
157 		else
158 			tab->trust = TS_TRUSTED;
159 
160 		ui_send_net(IMSG_CERT_STATUS, imsg->hdr.peerid,
161 		    &tofu_res, sizeof(tofu_res));
162 	} else {
163 		tab->trust = TS_UNTRUSTED;
164 		load_page_from_str(tab, "# Certificate mismatch\n");
165 		if ((tab->cert = strdup(hash)) == NULL)
166 			die();
167 		ui_yornp("Certificate mismatch.  Proceed?",
168 		    handle_check_cert_user_choice, tab);
169 	}
170 }
171 
172 static void
173 handle_check_cert_user_choice(int accept, struct tab *tab)
174 {
175 	ui_send_net(IMSG_CERT_STATUS, tab->id, &accept,
176 	    sizeof(accept));
177 
178 	if (accept) {
179 		/*
180 		 * trust the certificate for this session only.  If
181 		 * the page results in a redirect while we're asking
182 		 * the user to save, we'll end up with an invalid
183 		 * tabid (one request == one tab id) and crash.  It
184 		 * also makes sense to save it for the current session
185 		 * if the user accepted it.
186 		 */
187 		tofu_temp_trust(&certs, tab->uri.host, tab->uri.port, tab->cert);
188 
189 		ui_yornp("Save the new certificate?",
190 		    handle_maybe_save_new_cert, tab);
191 	} else {
192 		free(tab->cert);
193 		tab->cert = NULL;
194 	}
195 }
196 
197 static void
198 handle_maybe_save_new_cert(int accept, struct tab *tab)
199 {
200 	struct tofu_entry *e;
201 	const char *host, *port;
202 
203 	if (tab->proxy != NULL) {
204 		host = tab->proxy->host;
205 		port = tab->proxy->port;
206 	} else {
207 		host = tab->uri.host;
208 		port = tab->uri.port;
209 	}
210 
211 	if (!accept)
212 		goto end;
213 
214 	if ((e = calloc(1, sizeof(*e))) == NULL)
215 		die();
216 
217 	strlcpy(e->domain, host, sizeof(e->domain));
218 	if (*port != '\0' && strcmp(port, "1965")) {
219 		strlcat(e->domain, ":", sizeof(e->domain));
220 		strlcat(e->domain, port, sizeof(e->domain));
221 	}
222 	strlcpy(e->hash, tab->cert, sizeof(e->hash));
223 	ui_send_fs(IMSG_UPDATE_CERT, 0, e, sizeof(*e));
224 
225 	tofu_update(&certs, e);
226 
227 	tab->trust = TS_TRUSTED;
228 
229 end:
230 	free(tab->cert);
231 	tab->cert = NULL;
232 }
233 
234 static inline int
235 normalize_code(int n)
236 {
237 	if (n < 20) {
238 		if (n == 10 || n == 11)
239 			return n;
240 		return 10;
241 	} else if (n < 30) {
242 		return 20;
243 	} else if (n < 40) {
244 		if (n == 30 || n == 31)
245 			return n;
246 		return 30;
247 	} else if (n < 50) {
248 		if (n <= 44)
249 			return n;
250 		return 40;
251 	} else if (n < 60) {
252 		if (n <= 53 || n == 59)
253 			return n;
254 		return 50;
255 	} else if (n < 70) {
256 		if (n <= 62)
257 			return n;
258 		return 60;
259 	} else
260 		return MALFORMED_RESPONSE;
261 }
262 
263 static void
264 handle_imsg_got_code(struct imsg *imsg, size_t datalen)
265 {
266 	struct tab	*tab;
267 
268 	tab = tab_by_id(imsg->hdr.peerid);
269 
270 	if (sizeof(tab->code) != datalen)
271 		die();
272 
273 	memcpy(&tab->code, imsg->data, sizeof(tab->code));
274 	tab->code = normalize_code(tab->code);
275 	if (tab->code != 30 && tab->code != 31)
276 		tab->redirect_count = 0;
277 }
278 
279 static void
280 handle_imsg_got_meta(struct imsg *imsg, size_t datalen)
281 {
282 	struct tab	*tab;
283 
284 	tab = tab_by_id(imsg->hdr.peerid);
285 
286 	if (sizeof(tab->meta) <= datalen)
287 		die();
288 
289 	memcpy(tab->meta, imsg->data, datalen);
290 
291 	if (tab->code < 10) {	/* internal errors */
292 		load_page_from_str(tab, err_pages[tab->code]);
293 	} else if (tab->code < 20) {	/* 1x */
294 		load_page_from_str(tab, err_pages[tab->code]);
295 		ui_require_input(tab, tab->code == 11);
296 	} else if (tab->code == 20) {
297 		if (setup_parser_for(tab)) {
298 			ui_send_net(IMSG_PROCEED, tab->id, NULL, 0);
299 		} else {
300 			load_page_from_str(tab, err_pages[UNKNOWN_TYPE_OR_CSET]);
301 			ui_yornp("Can't display page, wanna save?",
302 			    handle_maybe_save_page, tab);
303 		}
304 	} else if (tab->code < 40) { /* 3x */
305 		tab->redirect_count++;
306 
307 		/* TODO: make customizable? */
308 		if (tab->redirect_count > 5) {
309 			load_page_from_str(tab,
310 			    err_pages[TOO_MUCH_REDIRECTS]);
311 		} else
312 			do_load_url(tab, tab->meta);
313 	} else { /* 4x, 5x & 6x */
314 		load_page_from_str(tab, err_pages[tab->code]);
315 	}
316 }
317 
318 static void
319 handle_maybe_save_page(int dosave, struct tab *tab)
320 {
321 	if (dosave)
322 		ui_read("Save to path", handle_save_page_path, tab->id);
323 	else
324 		stop_tab(tab);
325 }
326 
327 static void
328 handle_save_page_path(const char *path, unsigned int tabid)
329 {
330 	struct tab *tab;
331 
332 	if (path == NULL) {
333 		stop_tab(tab_by_id(tabid));
334 		return;
335 	}
336 
337 	tab = tab_by_id(tabid);
338 	tab->path = strdup(path);
339 
340 	ui_send_fs(IMSG_FILE_OPEN, tabid, path, strlen(path)+1);
341 }
342 
343 static void
344 handle_imsg_file_opened(struct imsg *imsg, size_t datalen)
345 {
346 	struct tab	*tab;
347 	char		*page;
348 	const char	*e;
349 	int		 l;
350 
351 	tab = tab_by_id(imsg->hdr.peerid);
352 
353 	if (imsg->fd == -1) {
354 		stop_tab(tab);
355 
356 		e = imsg->data;
357 		if (e[datalen-1] != '\0')
358 			die();
359 		l = asprintf(&page, "# Can't open file\n\n> %s: %s\n",
360 		    tab->path, e);
361 		if (l == -1)
362 			die();
363 		load_page_from_str(tab, page);
364 		free(page);
365 	} else {
366 		tab->fd = imsg->fd;
367 		ui_send_net(IMSG_PROCEED, tab->id, NULL, 0);
368 	}
369 }
370 
371 static void
372 handle_imsg_buf(struct imsg *imsg, size_t datalen)
373 {
374 	struct tab	*tab;
375 	int		 l;
376 	char		*page, buf[FMT_SCALED_STRSIZE] = {0};
377 
378 	tab = tab_by_id(imsg->hdr.peerid);
379 
380 	tab->bytes += datalen;
381 	if (tab->fd == -1) {
382 		if (!tab->buffer.page.parse(&tab->buffer.page,
383 		    imsg->data, datalen))
384 			die();
385 	} else {
386 		write(tab->fd, imsg->data, datalen);
387 		fmt_scaled(tab->bytes, buf);
388 		l = asprintf(&page, "Saving to \"%s\"... (%s)\n",
389 		    tab->path,
390 		    buf);
391 		if (l == -1)
392 			die();
393 		load_page_from_str(tab, page);
394 		free(page);
395 	}
396 
397 	ui_on_tab_refresh(tab);
398 }
399 
400 static void
401 handle_imsg_eof(struct imsg *imsg, size_t datalen)
402 {
403 	struct tab	*tab;
404 	int		 l;
405 	char		*page, buf[FMT_SCALED_STRSIZE] = {0};
406 
407 	tab = tab_by_id(imsg->hdr.peerid);
408 
409 	if (tab->fd == -1) {
410 		if (!tab->buffer.page.free(&tab->buffer.page))
411 			die();
412 	} else {
413 		fmt_scaled(tab->bytes, buf);
414 		l = asprintf(&page, "Saved to \"%s\" (%s)\n",
415 		    tab->path,
416 		    buf);
417 		if (l == -1)
418 			die();
419 		load_page_from_str(tab, page);
420 		free(page);
421 
422 		close(tab->fd);
423 		tab->fd = -1;
424 		free(tab->path);
425 		tab->path = NULL;
426 	}
427 
428 	ui_on_tab_refresh(tab);
429 	ui_on_tab_loaded(tab);
430 }
431 
432 static void
433 handle_imsg_bookmark_ok(struct imsg *imsg, size_t datalen)
434 {
435 	int res;
436 
437 	if (datalen != sizeof(res))
438 		die();
439 
440 	memcpy(&res, imsg->data, sizeof(res));
441 	if (res == 0)
442 		message("Added to bookmarks!");
443 	else
444 		message("Failed to add to bookmarks: %s",
445 		    strerror(res));
446 }
447 
448 static void
449 handle_imsg_save_cert_ok(struct imsg *imsg, size_t datalen)
450 {
451 	int res;
452 
453 	if (datalen != sizeof(res))
454 		die();
455 	memcpy(&res, imsg->data, datalen);
456 	if (res != 0)
457 		message("Failed to save the cert for: %s",
458 		    strerror(res));
459 }
460 
461 static void
462 handle_imsg_update_cert_ok(struct imsg *imsg, size_t datalen)
463 {
464 	int res;
465 
466 	if (datalen != sizeof(res))
467 		die();
468 	memcpy(&res, imsg->data, datalen);
469 	if (!res)
470 		message("Failed to update the certificate");
471 }
472 
473 static void
474 handle_dispatch_imsg(int fd, short ev, void *d)
475 {
476 	struct imsgev	*iev = d;
477 	dispatch_imsg(iev, ev, handlers, sizeof(handlers));
478 }
479 
480 static void
481 load_page_from_str(struct tab *tab, const char *page)
482 {
483 	erase_buffer(&tab->buffer);
484 	gemtext_initparser(&tab->buffer.page);
485 	if (!tab->buffer.page.parse(&tab->buffer.page, page, strlen(page)))
486 		die();
487 	if (!tab->buffer.page.free(&tab->buffer.page))
488 		die();
489 	ui_on_tab_refresh(tab);
490 	ui_on_tab_loaded(tab);
491 }
492 
493 void
494 load_about_url(struct tab *tab, const char *url)
495 {
496 	tab->trust = TS_VERIFIED;
497 
498 	gemtext_initparser(&tab->buffer.page);
499 
500 	ui_send_fs(IMSG_GET, tab->id,
501 	    tab->hist_cur->h, strlen(tab->hist_cur->h)+1);
502 }
503 
504 void
505 load_gemini_url(struct tab *tab, const char *url)
506 {
507 	struct get_req	 req;
508 
509 	stop_tab(tab);
510 	tab->id = tab_new_id();
511 
512 	memset(&req, 0, sizeof(req));
513 	strlcpy(req.host, tab->uri.host, sizeof(req.host));
514 	strlcpy(req.port, tab->uri.port, sizeof(req.host));
515 
516 	strlcpy(req.req, tab->hist_cur->h, sizeof(req.req));
517 	strlcat(req.req, "\r\n", sizeof(req.req));
518 
519 	req.proto = PROTO_GEMINI;
520 
521 	ui_send_net(IMSG_GET_RAW, tab->id,
522 	    &req, sizeof(req));
523 }
524 
525 void
526 load_via_proxy(struct tab *tab, const char *url, struct proxy *p)
527 {
528 	struct get_req req;
529 
530 	stop_tab(tab);
531 	tab->id = tab_new_id();
532 	tab->proxy = p;
533 
534 	memset(&req, 0, sizeof(req));
535 	strlcpy(req.host, p->host, sizeof(req.host));
536 	strlcpy(req.port, p->port, sizeof(req.host));
537 
538 	strlcpy(req.req, tab->hist_cur->h, sizeof(req.req));
539 	strlcat(req.req, "\r\n", sizeof(req.req));
540 
541 	req.proto = p->proto;
542 
543 	ui_send_net(IMSG_GET_RAW, tab->id,
544 	    &req, sizeof(req));
545 }
546 
547 static void
548 do_load_url(struct tab *tab, const char *url)
549 {
550 	struct phos_uri	 uri;
551 	struct proto	*p;
552 	struct proxy	*proxy;
553 	char		*t;
554 
555 	tab->proxy = NULL;
556 
557 	if (tab->fd != -1) {
558 		close(tab->fd);
559 		tab->fd = -1;
560 		free(tab->path);
561 		tab->path = NULL;
562 	}
563 
564 	tab->trust = TS_UNKNOWN;
565 
566 	memcpy(&uri, &tab->uri, sizeof(tab->uri));
567 	if (!phos_resolve_uri_from_str(&uri, url, &tab->uri)) {
568                 if (asprintf(&t, "#error loading %s\n>%s\n",
569 		    url, "Can't parse the URI") == -1)
570 			die();
571 		strlcpy(tab->hist_cur->h, url, sizeof(tab->hist_cur->h));
572 		load_page_from_str(tab, t);
573 		free(t);
574 		return;
575 	}
576 
577 	phos_serialize_uri(&tab->uri, tab->hist_cur->h,
578 	    sizeof(tab->hist_cur->h));
579 
580 	for (p = protos; p->schema != NULL; ++p) {
581 		if (!strcmp(tab->uri.scheme, p->schema)) {
582 			p->loadfn(tab, url);
583                         return;
584 		}
585 	}
586 
587 	TAILQ_FOREACH(proxy, &proxies, proxies) {
588 		if (!strcmp(tab->uri.scheme, proxy->match_proto)) {
589 			load_via_proxy(tab, url, proxy);
590 			return;
591 		}
592 	}
593 
594 	protos[0].loadfn(tab, url);
595 }
596 
597 void
598 load_url(struct tab *tab, const char *url)
599 {
600 	if (tab->hist_cur != NULL)
601 		hist_clear_forward(&tab->hist, TAILQ_NEXT(tab->hist_cur, entries));
602 
603 	if ((tab->hist_cur = calloc(1, sizeof(*tab->hist_cur))) == NULL) {
604 		event_loopbreak();
605 		return;
606 	}
607 
608 	hist_push(&tab->hist, tab->hist_cur);
609 	do_load_url(tab, url);
610 	erase_buffer(&tab->buffer);
611 }
612 
613 int
614 load_previous_page(struct tab *tab)
615 {
616 	struct hist	*h;
617 
618 	if ((h = TAILQ_PREV(tab->hist_cur, mhisthead, entries)) == NULL)
619 		return 0;
620 	tab->hist_cur = h;
621 	do_load_url(tab, h->h);
622 	return 1;
623 }
624 
625 int
626 load_next_page(struct tab *tab)
627 {
628 	struct hist	*h;
629 
630 	if ((h = TAILQ_NEXT(tab->hist_cur, entries)) == NULL)
631 		return 0;
632 	tab->hist_cur = h;
633 	do_load_url(tab, h->h);
634 	return 1;
635 }
636 
637 void
638 stop_tab(struct tab *tab)
639 {
640 	ui_send_net(IMSG_STOP, tab->id, NULL, 0);
641 
642 	if (tab->fd != -1) {
643 		close(tab->fd);
644 		tab->fd = -1;
645 		free(tab->path);
646 		tab->path = NULL;
647 		load_page_from_str(tab, "Stopped.\n");
648 	}
649 }
650 
651 void
652 add_to_bookmarks(const char *str)
653 {
654 	ui_send_fs(IMSG_BOOKMARK_PAGE, 0,
655 	    str, strlen(str)+1);
656 }
657 
658 void
659 save_session(void)
660 {
661 	struct tab *tab;
662 
663 	ui_send_fs(IMSG_SESSION_START, 0, NULL, 0);
664 
665 	TAILQ_FOREACH(tab, &tabshead, tabs) {
666 		ui_send_fs(IMSG_SESSION_TAB, 0,
667 		    tab->hist_cur->h, strlen(tab->hist_cur->h)+1);
668 	}
669 
670 	ui_send_fs(IMSG_SESSION_END, 0, NULL, 0);
671 }
672 
673 static void
674 session_new_tab_cb(const char *url)
675 {
676 	new_tab(url);
677 }
678 
679 static pid_t
680 start_child(enum telescope_process p, const char *argv0, int fd)
681 {
682 	const char	*argv[4];
683 	int		 argc = 0;
684 	pid_t		 pid;
685 
686 	switch (pid = fork()) {
687 	case -1:
688 		die();
689 	case 0:
690 		break;
691 	default:
692 		close(fd);
693 		return pid;
694 	}
695 
696 	if (dup2(fd, 3) == -1)
697 		err(1, "cannot setup imsg fd");
698 
699 	argv[argc++] = argv0;
700 	switch (p) {
701 	case PROC_UI:
702 		errx(1, "Can't start ui process");
703 	case PROC_FS:
704 		argv[argc++] = "-Tf";
705 		break;
706 	case PROC_NET:
707 		argv[argc++] = "-Tn";
708 		break;
709 	}
710 
711 	argv[argc++] = NULL;
712 	execvp(argv0, (char *const *)argv);
713 	err(1, "execvp(%s)", argv0);
714 }
715 
716 static int
717 ui_send_net(int type, uint32_t peerid, const void *data,
718     uint16_t datalen)
719 {
720 	return imsg_compose_event(iev_net, type, peerid, 0, -1, data,
721 	    datalen);
722 }
723 
724 static int
725 ui_send_fs(int type, uint32_t peerid, const void *data, uint16_t datalen)
726 {
727 	return imsg_compose_event(iev_fs, type, peerid, 0, -1, data,
728 	    datalen);
729 }
730 
731 static void __attribute__((noreturn))
732 usage(int r)
733 {
734 	fprintf(stderr, "USAGE: %s [-hn] [-c config] [url]\n", getprogname());
735 	fprintf(stderr, "version: " PACKAGE " " VERSION "\n");
736 	exit(r);
737 }
738 
739 int
740 main(int argc, char * const *argv)
741 {
742 	struct imsgev	 net_ibuf, fs_ibuf;
743 	int		 pipe2net[2], pipe2fs[2];
744 	int		 ch, configtest = 0, fail = 0;
745 	int		 has_url = 0;
746 	int		 proc = -1;
747 	char		 path[PATH_MAX];
748 	const char	*url = NEW_TAB_URL;
749 	const char	*argv0;
750 
751 	argv0 = argv[0];
752 
753 	signal(SIGCHLD, SIG_IGN);
754 	signal(SIGPIPE, SIG_IGN);
755 
756 	if (getenv("NO_COLOR") != NULL)
757 		enable_colors = 0;
758 
759 	strlcpy(path, getenv("HOME"), sizeof(path));
760 	strlcat(path, "/.telescope/config", sizeof(path));
761 
762 	while ((ch = getopt(argc, argv, "c:hnT:")) != -1) {
763 		switch (ch) {
764 		case 'c':
765 			fail = 1;
766 			strlcpy(path, optarg, sizeof(path));
767 			break;
768 		case 'n':
769 			configtest = 1;
770 			break;
771 		case 'h':
772 			usage(0);
773 		case 'T':
774 			switch (*optarg) {
775 			case 'f':
776 				proc = PROC_FS;
777 				break;
778 			case 'n':
779 				proc = PROC_NET;
780 				break;
781 			default:
782 				errx(1, "invalid process spec %c",
783 				    *optarg);
784 			}
785 			break;
786 		default:
787 			usage(1);
788 		}
789 	}
790 
791 	argc -= optind;
792 	argv += optind;
793 
794 	if (proc != -1) {
795 		if (argc > 0)
796 			usage(1);
797 		else if (proc == PROC_FS)
798 			return fs_main();
799 		else if (proc == PROC_NET)
800 			return client_main();
801 		else
802 			usage(1);
803 	}
804 
805 	if (argc != 0) {
806 		has_url = 1;
807 		url = argv[0];
808 	}
809 
810 	/* setup keys before reading the config */
811 	TAILQ_INIT(&global_map.m);
812 	global_map.unhandled_input = global_key_unbound;
813 	TAILQ_INIT(&minibuffer_map.m);
814 
815 	config_init();
816 	parseconfig(path, fail);
817 	if (configtest){
818 		puts("config OK");
819 		exit(0);
820 	}
821 
822 	/* Start children. */
823 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe2fs) == -1)
824 		err(1, "socketpair");
825 	start_child(PROC_FS, argv0, pipe2fs[1]);
826 	imsg_init(&fs_ibuf.ibuf, pipe2fs[0]);
827 	iev_fs = &fs_ibuf;
828 	iev_fs->handler = handle_dispatch_imsg;
829 
830 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe2net) == -1)
831 		err(1, "socketpair");
832 	start_child(PROC_NET, argv0, pipe2net[1]);
833 	imsg_init(&net_ibuf.ibuf, pipe2net[0]);
834 	iev_net = &net_ibuf;
835 	iev_net->handler = handle_dispatch_imsg;
836 
837 	setproctitle("ui");
838 
839 	/* initialize tofu & load certificates */
840 	fs_init();
841 	tofu_init(&certs, 5, offsetof(struct tofu_entry, domain));
842 	load_certs(&certs);
843 
844 	event_init();
845 
846 	/* Setup event handlers for pipes to fs/net */
847 	iev_fs->events = EV_READ;
848 	event_set(&iev_fs->ev, iev_fs->ibuf.fd, iev_fs->events,
849 	    iev_fs->handler, iev_fs);
850 	event_add(&iev_fs->ev, NULL);
851 
852 	iev_net->events = EV_READ;
853 	event_set(&iev_net->ev, iev_net->ibuf.fd, iev_net->events,
854 	    iev_net->handler, iev_net);
855 	event_add(&iev_net->ev, NULL);
856 
857 	if (ui_init()) {
858 		load_last_session(session_new_tab_cb);
859 		if (has_url || TAILQ_EMPTY(&tabshead))
860 			new_tab(url);
861 
862 		sandbox_ui_process();
863 		event_dispatch();
864 		ui_end();
865 	}
866 
867 	ui_send_fs(IMSG_QUIT, 0, NULL, 0);
868 	ui_send_net(IMSG_QUIT, 0, NULL, 0);
869 	imsg_flush(&iev_fs->ibuf);
870 
871 	return 0;
872 }