2 * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 #include <sys/socket.h>
35 #include "minibuffer.h"
38 #include "telescope.h"
42 static const struct option longopts[] = {
43 {"colors", no_argument, NULL, 'C'},
44 {"colours", no_argument, NULL, 'C'},
45 {"help", no_argument, NULL, 'h'},
46 {"safe", no_argument, NULL, 'S'},
47 {"version", no_argument, NULL, 'v'},
51 static const char *opts = "Cc:hnST:v";
54 static char url[GEMINI_URL_LEN];
57 * Used to know when we're finished loading.
62 * "Safe" (or "sandobox") mode. If enabled, Telescope shouldn't write
63 * anything to the filesystem or execute external programs.
67 static struct imsgev *iev_fs, *iev_net;
69 struct tabshead tabshead = TAILQ_HEAD_INITIALIZER(tabshead);
70 struct tabshead ktabshead = TAILQ_HEAD_INITIALIZER(ktabshead);
71 struct proxylist proxies = TAILQ_HEAD_INITIALIZER(proxies);
73 enum telescope_process {
79 #define CANNOT_FETCH 0
80 #define TOO_MUCH_REDIRECTS 1
81 #define MALFORMED_RESPONSE 2
82 #define UNKNOWN_TYPE_OR_CSET 3
83 #define UNKNOWN_PROTOCOL 4
85 /* XXX: keep in sync with normalize_code */
86 const char *err_pages[70] = {
87 [CANNOT_FETCH] = "# Couldn't load the page\n",
88 [TOO_MUCH_REDIRECTS] = "# Too much redirects\n",
89 [MALFORMED_RESPONSE] = "# Got a malformed response\n",
90 [UNKNOWN_TYPE_OR_CSET] = "# Unsupported type or charset\n",
91 [UNKNOWN_PROTOCOL] = "# Unknown protocol\n",
93 [10] = "# Input required\n",
94 [11] = "# Input required\n",
95 [40] = "# Temporary failure\n",
96 [41] = "# Server unavailable\n",
97 [42] = "# CGI error\n",
98 [43] = "# Proxy error\n",
99 [44] = "# Slow down\n",
100 [50] = "# Permanent failure\n",
101 [51] = "# Not found\n",
103 [53] = "# Proxy request refused\n",
104 [59] = "# Bad request\n",
105 [60] = "# Client certificate required\n",
106 [61] = "# Certificate not authorised\n",
107 [62] = "# Certificate not valid\n"
110 static void die(void) __attribute__((__noreturn__));
111 static struct tab *tab_by_id(uint32_t);
112 static void handle_imsg_err(struct imsg *, size_t);
113 static void handle_imsg_check_cert(struct imsg *, size_t);
114 static void handle_check_cert_user_choice(int, struct tab *);
115 static void handle_maybe_save_new_cert(int, struct tab *);
116 static void handle_imsg_got_code(struct imsg *, size_t);
117 static void handle_imsg_got_meta(struct imsg *, size_t);
118 static void handle_maybe_save_page(int, struct tab *);
119 static void handle_save_page_path(const char *, struct tab *);
120 static void handle_imsg_file_opened(struct imsg *, size_t);
121 static void handle_imsg_buf(struct imsg *, size_t);
122 static void handle_imsg_eof(struct imsg *, size_t);
123 static void handle_imsg_tofu(struct imsg *, size_t);
124 static void handle_imsg_bookmark_ok(struct imsg *, size_t);
125 static void handle_imsg_save_cert_ok(struct imsg *, size_t);
126 static void handle_imsg_update_cert_ok(struct imsg *, size_t);
127 static void handle_imsg_session(struct imsg *, size_t);
128 static void handle_dispatch_imsg(int, short, void *);
129 static int load_about_url(struct tab *, const char *);
130 static int load_file_url(struct tab *, const char *);
131 static int load_finger_url(struct tab *, const char *);
132 static int load_gemini_url(struct tab *, const char *);
133 static int load_gopher_url(struct tab *, const char *);
134 static int load_via_proxy(struct tab *, const char *,
136 static int make_request(struct tab *, struct get_req *, int,
138 static int make_fs_request(struct tab *, int, const char *);
139 static int do_load_url(struct tab *, const char *, const char *, int);
140 static pid_t start_child(enum telescope_process, const char *, int);
141 static void send_url(const char *);
143 static const struct proto {
146 int (*loadfn)(struct tab *, const char *);
148 {"about", NULL, load_about_url},
149 {"file", NULL, load_file_url},
150 {"finger", "79", load_finger_url},
151 {"gemini", "1965", load_gemini_url},
152 {"gopher", "70", load_gopher_url},
156 static imsg_handlerfn *handlers[] = {
157 [IMSG_ERR] = handle_imsg_err,
158 [IMSG_CHECK_CERT] = handle_imsg_check_cert,
159 [IMSG_GOT_CODE] = handle_imsg_got_code,
160 [IMSG_GOT_META] = handle_imsg_got_meta,
161 [IMSG_BUF] = handle_imsg_buf,
162 [IMSG_EOF] = handle_imsg_eof,
163 [IMSG_TOFU] = handle_imsg_tofu,
164 [IMSG_BOOKMARK_OK] = handle_imsg_bookmark_ok,
165 [IMSG_SAVE_CERT_OK] = handle_imsg_save_cert_ok,
166 [IMSG_UPDATE_CERT_OK] = handle_imsg_update_cert_ok,
167 [IMSG_FILE_OPENED] = handle_imsg_file_opened,
168 [IMSG_SESSION_TAB] = handle_imsg_session,
169 [IMSG_SESSION_TAB_HIST] = handle_imsg_session,
170 [IMSG_SESSION_END] = handle_imsg_session,
173 static struct ohash certs;
175 static void __attribute__((__noreturn__))
182 tab_by_id(uint32_t id)
186 TAILQ_FOREACH(t, &tabshead, tabs) {
195 handle_imsg_err(struct imsg *imsg, size_t datalen)
200 if ((tab = tab_by_id(imsg->hdr.peerid)) == NULL)
204 page[datalen-1] = '\0';
206 if (asprintf(&page, "# Error loading %s\n\n> %s\n",
207 tab->hist_cur->h, page) == -1)
209 load_page_from_str(tab, page);
214 handle_imsg_check_cert(struct imsg *imsg, size_t datalen)
216 const char *hash, *host, *port;
218 struct tofu_entry *e;
222 if (hash[datalen-1] != '\0')
225 if ((tab = tab_by_id(imsg->hdr.peerid)) == NULL)
228 if (tab->proxy != NULL) {
229 host = tab->proxy->host;
230 port = tab->proxy->port;
232 host = tab->uri.host;
233 port = tab->uri.port;
236 if ((e = tofu_lookup(&certs, host, port)) == NULL) {
237 /* TODO: an update in libressl/libretls changed
238 * significantly. Find a better approach at storing
240 if (datalen > sizeof(e->hash))
243 tofu_res = 1; /* trust on first use */
244 if ((e = calloc(1, sizeof(*e))) == NULL)
246 strlcpy(e->domain, host, sizeof(e->domain));
247 if (*port != '\0' && strcmp(port, "1965")) {
248 strlcat(e->domain, ":", sizeof(e->domain));
249 strlcat(e->domain, port, sizeof(e->domain));
251 strlcpy(e->hash, hash, sizeof(e->hash));
253 ui_send_fs(IMSG_SAVE_CERT, tab->id, e, sizeof(*e));
255 tofu_res = !strcmp(hash, e->hash);
258 if (e->verified == -1)
259 tab->trust = TS_TEMP_TRUSTED;
260 else if (e->verified == 1)
261 tab->trust = TS_VERIFIED;
263 tab->trust = TS_TRUSTED;
265 ui_send_net(IMSG_CERT_STATUS, imsg->hdr.peerid,
266 &tofu_res, sizeof(tofu_res));
268 tab->trust = TS_UNTRUSTED;
269 load_page_from_str(tab, "# Certificate mismatch\n");
270 if ((tab->cert = strdup(hash)) == NULL)
272 ui_yornp("Certificate mismatch. Proceed?",
273 handle_check_cert_user_choice, tab);
278 handle_check_cert_user_choice(int accept, struct tab *tab)
280 ui_send_net(IMSG_CERT_STATUS, tab->id, &accept,
285 * trust the certificate for this session only. If
286 * the page results in a redirect while we're asking
287 * the user to save, we'll end up with an invalid
288 * tabid (one request == one tab id). It also makes
289 * sense to save it for the current session if the
292 tofu_temp_trust(&certs, tab->uri.host, tab->uri.port,
296 ui_yornp("Save the new certificate?",
297 handle_maybe_save_new_cert, tab);
299 message("Certificate temporarly trusted");
307 handle_maybe_save_new_cert(int accept, struct tab *tab)
309 struct tofu_entry *e;
310 const char *host, *port;
312 if (tab->proxy != NULL) {
313 host = tab->proxy->host;
314 port = tab->proxy->port;
316 host = tab->uri.host;
317 port = tab->uri.port;
323 if ((e = calloc(1, sizeof(*e))) == NULL)
326 strlcpy(e->domain, host, sizeof(e->domain));
327 if (*port != '\0' && strcmp(port, "1965")) {
328 strlcat(e->domain, ":", sizeof(e->domain));
329 strlcat(e->domain, port, sizeof(e->domain));
331 strlcpy(e->hash, tab->cert, sizeof(e->hash));
332 ui_send_fs(IMSG_UPDATE_CERT, 0, e, sizeof(*e));
334 tofu_update(&certs, e);
336 tab->trust = TS_TRUSTED;
344 normalize_code(int n)
347 if (n == 10 || n == 11)
353 if (n == 30 || n == 31)
361 if (n <= 53 || n == 59)
369 return MALFORMED_RESPONSE;
373 handle_imsg_got_code(struct imsg *imsg, size_t datalen)
377 if ((tab = tab_by_id(imsg->hdr.peerid)) == NULL)
380 if (sizeof(tab->code) != datalen)
383 memcpy(&tab->code, imsg->data, sizeof(tab->code));
384 tab->code = normalize_code(tab->code);
385 if (tab->code != 30 && tab->code != 31)
386 tab->redirect_count = 0;
390 handle_imsg_got_meta(struct imsg *imsg, size_t datalen)
395 if ((tab = tab_by_id(imsg->hdr.peerid)) == NULL)
398 if (sizeof(tab->meta) <= datalen)
401 memcpy(tab->meta, imsg->data, datalen);
403 if (tab->code < 10) { /* internal errors */
404 load_page_from_str(tab, err_pages[tab->code]);
405 } else if (tab->code < 20) { /* 1x */
406 free(tab->last_input_url);
407 tab->last_input_url = strdup(tab->hist_cur->h);
408 if (tab->last_input_url == NULL)
411 load_page_from_str(tab, err_pages[tab->code]);
412 ui_require_input(tab, tab->code == 11, ir_select_gemini);
413 } else if (tab->code == 20) {
414 if (setup_parser_for(tab)) {
415 ui_send_net(IMSG_PROCEED, tab->id, NULL, 0);
416 } else if (safe_mode) {
417 load_page_from_str(tab,
418 err_pages[UNKNOWN_TYPE_OR_CSET]);
422 if ((h = hist_pop(&tab->hist)) != NULL)
424 snprintf(buf, sizeof(buf),
425 "Can't display \"%s\", save it?", tab->meta);
426 ui_yornp(buf, handle_maybe_save_page, tab);
428 } else if (tab->code < 40) { /* 3x */
429 tab->redirect_count++;
431 /* TODO: make customizable? */
432 if (tab->redirect_count > 5) {
433 load_page_from_str(tab,
434 err_pages[TOO_MUCH_REDIRECTS]);
436 do_load_url(tab, tab->meta, NULL, LU_MODE_NOCACHE);
437 } else { /* 4x, 5x & 6x */
438 load_page_from_str(tab, err_pages[tab->code]);
443 handle_maybe_save_page(int dosave, struct tab *tab)
446 char input[PATH_MAX];
448 /* XXX: this print a message that is confusing */
449 ui_on_tab_loaded(tab);
456 if ((f = strrchr(tab->uri.path, '/')) == NULL)
461 strlcpy(input, download_path, sizeof(input));
462 strlcat(input, f, sizeof(input));
464 ui_read("Save to path", handle_save_page_path, tab, input);
468 handle_save_page_path(const char *path, struct tab *tab)
475 ui_show_downloads_pane();
477 enqueue_download(tab->id, path);
478 ui_send_fs(IMSG_FILE_OPEN, tab->id, path, strlen(path)+1);
481 * Change this tab id, the old one is associated with the
484 tab->id = tab_new_id();
488 handle_imsg_file_opened(struct imsg *imsg, size_t datalen)
494 * There are no reason we shouldn't be able to find the
497 if ((d = download_by_id(imsg->hdr.peerid)) == NULL)
500 if (imsg->fd == -1) {
502 if (e[datalen-1] != '\0')
504 message("Can't open file %s: %s", d->path, e);
507 ui_send_net(IMSG_PROCEED, d->id, NULL, 0);
512 handle_imsg_session(struct imsg *imsg, size_t datalen)
514 static struct tab *curr;
515 static struct tab *tab;
516 struct session_tab st;
517 struct session_tab_hist sth;
522 * The fs process tried to send tabs after it has announced
523 * that he's done. Something fishy is going on, better die.
528 switch (imsg->hdr.type) {
529 case IMSG_SESSION_TAB:
530 if (datalen != sizeof(st))
533 memcpy(&st, imsg->data, sizeof(st));
534 if ((tab = new_tab(st.uri, NULL, NULL)) == NULL)
536 tab->hist_cur->line_off = st.top_line;
537 tab->hist_cur->current_off = st.current_line;
538 strlcpy(tab->buffer.page.title, st.title,
539 sizeof(tab->buffer.page.title));
540 if (st.flags & TAB_CURRENT)
542 if (st.flags & TAB_KILLED)
546 case IMSG_SESSION_TAB_HIST:
547 if (tab == NULL || datalen != sizeof(sth))
550 memcpy(&sth, imsg->data, sizeof(sth));
551 if (sth.uri[sizeof(sth.uri)-1] != '\0')
554 if ((h = calloc(1, sizeof(*h))) == NULL)
556 strlcpy(h->h, sth.uri, sizeof(h->h));
559 hist_push(&tab->hist, h);
561 hist_add_before(&tab->hist, tab->hist_cur, h);
564 case IMSG_SESSION_END:
565 if (datalen != sizeof(first_time))
567 memcpy(&first_time, imsg->data, sizeof(first_time));
569 new_tab("about:new", NULL, NULL);
570 curr = new_tab("about:help", NULL, NULL);
576 if (has_url || TAILQ_EMPTY(&tabshead))
577 new_tab(url, NULL, NULL);
587 handle_imsg_buf(struct imsg *imsg, size_t datalen)
589 struct tab *tab = NULL;
590 struct download *d = NULL;
592 if ((tab = tab_by_id(imsg->hdr.peerid)) == NULL &&
593 (d = download_by_id(imsg->hdr.peerid)) == NULL)
597 if (!parser_parse(tab, imsg->data, datalen))
599 ui_on_tab_refresh(tab);
602 write(d->fd, imsg->data, datalen);
603 ui_on_download_refresh();
608 handle_imsg_eof(struct imsg *imsg, size_t datalen)
610 struct tab *tab = NULL;
611 struct download *d = NULL;
613 if ((tab = tab_by_id(imsg->hdr.peerid)) == NULL &&
614 (d = download_by_id(imsg->hdr.peerid)) == NULL)
618 if (!parser_free(tab))
620 if (has_prefix(tab->hist_cur->h, "gemini://") ||
621 has_prefix(tab->hist_cur->h, "gopher://"))
623 ui_on_tab_refresh(tab);
624 ui_on_tab_loaded(tab);
628 ui_on_download_refresh();
633 handle_imsg_tofu(struct imsg *imsg, size_t datalen)
635 struct tofu_entry *e;
640 if ((e = calloc(1, sizeof(*e))) == NULL)
643 if (datalen != sizeof(*e))
645 memcpy(e, imsg->data, sizeof(*e));
646 if (e->domain[sizeof(e->domain)-1] != '\0' ||
647 e->hash[sizeof(e->hash)-1] != '\0')
653 handle_imsg_bookmark_ok(struct imsg *imsg, size_t datalen)
657 if (datalen != sizeof(res))
660 memcpy(&res, imsg->data, sizeof(res));
662 message("Added to bookmarks!");
664 message("Failed to add to bookmarks: %s",
669 handle_imsg_save_cert_ok(struct imsg *imsg, size_t datalen)
673 if (datalen != sizeof(res))
675 memcpy(&res, imsg->data, datalen);
677 message("Failed to save the cert for: %s",
682 handle_imsg_update_cert_ok(struct imsg *imsg, size_t datalen)
686 if (datalen != sizeof(res))
688 memcpy(&res, imsg->data, datalen);
690 message("Failed to update the certificate");
694 handle_dispatch_imsg(int fd, short ev, void *d)
696 struct imsgev *iev = d;
698 if (dispatch_imsg(iev, ev, handlers, sizeof(handlers)) == -1)
699 err(1, "connection closed");
703 load_about_url(struct tab *tab, const char *url)
705 tab->trust = TS_UNKNOWN;
706 parser_init(tab, gemtext_initparser);
707 return make_fs_request(tab, IMSG_GET, url);
711 load_file_url(struct tab *tab, const char *url)
713 tab->trust = TS_UNKNOWN;
714 return make_fs_request(tab, IMSG_GET_FILE, tab->uri.path);
718 load_finger_url(struct tab *tab, const char *url)
724 memset(&req, 0, sizeof(req));
725 strlcpy(req.port, tab->uri.port, sizeof(req.port));
728 * Sometimes the finger url have the user as path component
729 * (e.g. finger://thelambdalab.xyz/plugd), sometimes as
730 * userinfo (e.g. finger://cobradile@finger.farm).
732 if ((at = strchr(tab->uri.host, '@')) != NULL) {
733 len = at - tab->uri.host;
734 memcpy(req.req, tab->uri.host, len);
736 if (len >= sizeof(req.req))
740 strlcpy(req.host, at+1, sizeof(req.host));
742 strlcpy(req.host, tab->uri.host, sizeof(req.host));
744 /* +1 to skip the initial `/' */
745 strlcpy(req.req, tab->uri.path+1, sizeof(req.req));
747 strlcat(req.req, "\r\n", sizeof(req.req));
749 parser_init(tab, textplain_initparser);
750 return make_request(tab, &req, PROTO_FINGER, NULL);
754 load_gemini_url(struct tab *tab, const char *url)
758 memset(&req, 0, sizeof(req));
759 strlcpy(req.host, tab->uri.host, sizeof(req.host));
760 strlcpy(req.port, tab->uri.port, sizeof(req.port));
762 return make_request(tab, &req, PROTO_GEMINI, tab->hist_cur->h);
765 static inline const char *
766 gopher_skip_selector(const char *path, int *ret_type)
770 if (!strcmp(path, "/") || *path == '\0') {
779 switch (*ret_type = *path) {
795 load_gopher_url(struct tab *tab, const char *url)
801 memset(&req, 0, sizeof(req));
802 strlcpy(req.host, tab->uri.host, sizeof(req.host));
803 strlcpy(req.port, tab->uri.port, sizeof(req.port));
805 path = gopher_skip_selector(tab->uri.path, &type);
808 parser_init(tab, textplain_initparser);
811 parser_init(tab, gophermap_initparser);
814 free(tab->last_input_url);
815 tab->last_input_url = strdup(url);
816 if (tab->last_input_url == NULL)
818 ui_require_input(tab, 0, ir_select_gopher);
819 return load_page_from_str(tab, err_pages[10]);
821 return load_page_from_str(tab, "Unknown gopher selector");
824 strlcpy(req.req, path, sizeof(req.req));
825 if (*tab->uri.query != '\0') {
826 strlcat(req.req, "?", sizeof(req.req));
827 strlcat(req.req, tab->uri.query, sizeof(req.req));
829 strlcat(req.req, "\r\n", sizeof(req.req));
831 return make_request(tab, &req, PROTO_GOPHER, NULL);
835 load_via_proxy(struct tab *tab, const char *url, struct proxy *p)
839 memset(&req, 0, sizeof(req));
840 strlcpy(req.host, p->host, sizeof(req.host));
841 strlcpy(req.port, p->port, sizeof(req.port));
845 return make_request(tab, &req, p->proto, tab->hist_cur->h);
849 make_request(struct tab *tab, struct get_req *req, int proto, const char *r)
852 tab->id = tab_new_id();
856 strlcpy(req->req, r, sizeof(req->req));
857 strlcat(req->req, "\r\n", sizeof(req->req));
860 start_loading_anim(tab);
861 ui_send_net(IMSG_GET_RAW, tab->id, req, sizeof(*req));
864 * So the various load_*_url can `return make_request` and
865 * do_load_url is happy.
871 make_fs_request(struct tab *tab, int type, const char *r)
874 tab->id = tab_new_id();
876 ui_send_fs(type, tab->id, r, strlen(r)+1);
879 * So load_{about,file}_url can `return make_fs_request` and
880 * do_load_url is happy.
886 gopher_send_search_req(struct tab *tab, const char *text)
890 memset(&req, 0, sizeof(req));
891 strlcpy(req.host, tab->uri.host, sizeof(req.host));
892 strlcpy(req.port, tab->uri.port, sizeof(req.port));
895 strlcpy(req.req, tab->uri.path+2, sizeof(req.req));
896 if (*tab->uri.query != '\0') {
897 strlcat(req.req, "?", sizeof(req.req));
898 strlcat(req.req, tab->uri.query, sizeof(req.req));
901 strlcat(req.req, "\t", sizeof(req.req));
902 strlcat(req.req, text, sizeof(req.req));
903 strlcat(req.req, "\r\n", sizeof(req.req));
905 erase_buffer(&tab->buffer);
906 parser_init(tab, gophermap_initparser);
908 make_request(tab, &req, PROTO_GOPHER, NULL);
912 load_page_from_str(struct tab *tab, const char *page)
914 parser_init(tab, gemtext_initparser);
915 if (!tab->buffer.page.parse(&tab->buffer.page, page, strlen(page)))
917 if (!tab->buffer.page.free(&tab->buffer.page))
919 ui_on_tab_refresh(tab);
920 ui_on_tab_loaded(tab);
925 * Effectively load the given url in the given tab. Return 1 when
926 * loading the page asynchronously, and thus when an erase_buffer can
927 * be done right after this function return, or 0 when loading the
928 * page synchronously.
931 do_load_url(struct tab *tab, const char *url, const char *base, int mode)
933 const struct proto *p;
936 int nocache = mode & LU_MODE_NOCACHE;
940 tab->trust = TS_UNKNOWN;
943 memcpy(&uri, &tab->uri, sizeof(tab->uri));
945 phos_parse_absolute_uri(base, &uri);
947 if (!phos_resolve_uri_from_str(&uri, url, &tab->uri)) {
948 if (asprintf(&t, "#error loading %s\n>%s\n",
949 url, "Can't parse the URI") == -1)
951 strlcpy(tab->hist_cur->h, url, sizeof(tab->hist_cur->h));
952 load_page_from_str(tab, t);
957 phos_serialize_uri(&tab->uri, tab->hist_cur->h,
958 sizeof(tab->hist_cur->h));
960 if (!nocache && mcache_lookup(tab->hist_cur->h, tab)) {
961 ui_on_tab_refresh(tab);
962 ui_on_tab_loaded(tab);
966 for (p = protos; p->schema != NULL; ++p) {
967 if (!strcmp(tab->uri.scheme, p->schema)) {
969 if (*tab->uri.port == '\0' && p->port != NULL)
970 strlcpy(tab->uri.port, p->port,
971 sizeof(tab->uri.port));
973 return p->loadfn(tab, tab->hist_cur->h);
977 TAILQ_FOREACH(proxy, &proxies, proxies) {
978 if (!strcmp(tab->uri.scheme, proxy->match_proto))
979 return load_via_proxy(tab, url, proxy);
982 return load_page_from_str(tab, err_pages[UNKNOWN_PROTOCOL]);
986 * Load url in tab and handle history. If a tab is marked as lazy, only
987 * prepare the url but don't load it.
990 load_url(struct tab *tab, const char *url, const char *base, int mode)
992 int lazy = tab->flags & TAB_LAZY;
993 int nohist = mode & LU_MODE_NOHIST;
995 if (operating && lazy) {
996 tab->flags ^= TAB_LAZY;
998 } else if (tab->hist_cur != NULL)
999 get_scroll_position(tab, &tab->hist_cur->line_off,
1000 &tab->hist_cur->current_off);
1002 if (!nohist && (!lazy || tab->hist_cur == NULL)) {
1003 if (tab->hist_cur != NULL)
1004 hist_clear_forward(&tab->hist,
1005 TAILQ_NEXT(tab->hist_cur, entries));
1007 if ((tab->hist_cur = calloc(1, sizeof(*tab->hist_cur)))
1013 strlcpy(tab->buffer.page.title, url,
1014 sizeof(tab->buffer.page.title));
1015 hist_push(&tab->hist, tab->hist_cur);
1018 strlcpy(tab->hist_cur->h, url,
1019 sizeof(tab->hist_cur->h));
1023 do_load_url(tab, url, base, mode);
1027 load_url_in_tab(struct tab *tab, const char *url, const char *base, int mode)
1031 message("Loading %s...", url);
1034 load_url(tab, url, base, mode);
1038 load_previous_page(struct tab *tab)
1042 if ((h = TAILQ_PREV(tab->hist_cur, mhisthead, entries)) == NULL)
1045 do_load_url(tab, h->h, NULL, LU_MODE_NONE);
1050 load_next_page(struct tab *tab)
1054 if ((h = TAILQ_NEXT(tab->hist_cur, entries)) == NULL)
1057 do_load_url(tab, h->h, NULL, LU_MODE_NONE);
1062 add_to_bookmarks(const char *str)
1064 ui_send_fs(IMSG_BOOKMARK_PAGE, 0,
1065 str, strlen(str)+1);
1069 * Given a user-entered URL, apply some heuristics to use it:
1071 * - if it's a proper url use it
1072 * - if it starts with a `./' or a `/' assume its a file:// url
1073 * - assume it's a gemini:// url
1075 * `ret' (of which len is the size) will be filled with the resulting
1079 humanify_url(const char *raw, char *ret, size_t len)
1081 struct phos_uri uri;
1084 if (phos_parse_absolute_uri(raw, &uri)) {
1085 strlcpy(ret, raw, len);
1089 if (has_prefix(raw, "./")) {
1090 strlcpy(ret, "file://", len);
1091 getcwd(buf, sizeof(buf));
1092 strlcat(ret, buf, len);
1093 strlcat(ret, "/", len);
1094 strlcat(ret, raw+2, len);
1099 strlcpy(ret, "file://", len);
1100 strlcat(ret, raw, len);
1104 strlcpy(ret, "gemini://", len);
1105 strlcat(ret, raw, len);
1109 start_child(enum telescope_process p, const char *argv0, int fd)
1111 const char *argv[5];
1115 switch (pid = fork()) {
1125 if (dup2(fd, 3) == -1)
1126 err(1, "cannot setup imsg fd");
1128 argv[argc++] = argv0;
1131 errx(1, "Can't start ui process");
1133 argv[argc++] = "-Tf";
1136 argv[argc++] = "-Tn";
1141 argv[argc++] = "-S";
1143 argv[argc++] = NULL;
1144 execvp(argv0, (char *const *)argv);
1145 err(1, "execvp(%s)", argv0);
1149 send_url(const char *url)
1151 struct sockaddr_un sun;
1152 struct imsgbuf ibuf;
1155 if ((ctl_sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
1158 memset(&sun, 0, sizeof(sun));
1159 sun.sun_family = AF_UNIX;
1160 strlcpy(sun.sun_path, ctlsock_path, sizeof(sun.sun_path));
1162 if (connect(ctl_sock, (struct sockaddr *)&sun, sizeof(sun)) == -1)
1163 err(1, "connect: %s", ctlsock_path);
1165 imsg_init(&ibuf, ctl_sock);
1166 imsg_compose(&ibuf, IMSG_CTL_OPEN_URL, 0, 0, -1, url,
1173 ui_send_net(int type, uint32_t peerid, const void *data,
1176 return imsg_compose_event(iev_net, type, peerid, 0, -1, data,
1181 ui_send_fs(int type, uint32_t peerid, const void *data, uint16_t datalen)
1183 return imsg_compose_event(iev_fs, type, peerid, 0, -1, data,
1187 static void __attribute__((noreturn))
1190 fprintf(stderr, "USAGE: %s [-ChnSv] [-c config] [url]\n",
1192 fprintf(stderr, "version: " PACKAGE " " VERSION "\n");
1197 main(int argc, char * const *argv)
1199 struct imsgev net_ibuf, fs_ibuf;
1202 int pipe2net[2], pipe2fs[2];
1203 int ch, configtest = 0, fail = 0;
1211 signal(SIGCHLD, SIG_IGN);
1212 signal(SIGPIPE, SIG_IGN);
1214 if (getenv("NO_COLOR") != NULL)
1219 while ((ch = getopt_long(argc, argv, opts, longopts, NULL)) != -1) {
1222 exit(ui_print_colors());
1225 strlcpy(config_path, optarg, sizeof(config_path));
1244 errx(1, "invalid process spec %c",
1249 printf("%s %s\n", PACKAGE_NAME, PACKAGE_VERSION);
1263 else if (proc == PROC_FS)
1265 else if (proc == PROC_NET)
1273 humanify_url(argv[0], url, sizeof(url));
1276 /* setup keys before reading the config */
1277 TAILQ_INIT(&global_map.m);
1278 global_map.unhandled_input = global_key_unbound;
1279 TAILQ_INIT(&minibuffer_map.m);
1282 parseconfig(config_path, fail);
1288 if (download_path == NULL &&
1289 (download_path = strdup("/tmp/")) == NULL)
1292 if (!safe_mode && (sessionfd = lock_session()) == -1) {
1298 errx(1, "can't lock session, is another instance of "
1299 "telescope already running?");
1302 /* Start children. */
1303 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe2fs) == -1)
1304 err(1, "socketpair");
1305 start_child(PROC_FS, argv0, pipe2fs[1]);
1306 imsg_init(&fs_ibuf.ibuf, pipe2fs[0]);
1308 iev_fs->handler = handle_dispatch_imsg;
1310 if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe2net) == -1)
1311 err(1, "socketpair");
1312 start_child(PROC_NET, argv0, pipe2net[1]);
1313 imsg_init(&net_ibuf.ibuf, pipe2net[0]);
1314 iev_net = &net_ibuf;
1315 iev_net->handler = handle_dispatch_imsg;
1319 /* initialize tofu store */
1320 tofu_init(&certs, 5, offsetof(struct tofu_entry, domain));
1325 if ((control_fd = control_init(ctlsock_path)) == -1)
1326 err(1, "control_init %s", ctlsock_path);
1327 control_listen(control_fd);
1330 /* initialize the in-memory cache store */
1333 /* Setup event handler for the autosave */
1336 /* Setup event handlers for pipes to fs/net */
1337 iev_fs->events = EV_READ;
1338 event_set(&iev_fs->ev, iev_fs->ibuf.fd, iev_fs->events,
1339 iev_fs->handler, iev_fs);
1340 event_add(&iev_fs->ev, NULL);
1342 iev_net->events = EV_READ;
1343 event_set(&iev_net->ev, iev_net->ibuf.fd, iev_net->events,
1344 iev_net->handler, iev_net);
1345 event_add(&iev_net->ev, NULL);
1348 sandbox_ui_process();
1349 ui_send_fs(IMSG_INIT, 0, NULL, 0);
1354 ui_send_fs(IMSG_QUIT, 0, NULL, 0);
1355 ui_send_net(IMSG_QUIT, 0, NULL, 0);
1356 imsg_flush(&iev_fs->ibuf);
1357 imsg_flush(&iev_net->ibuf);
1359 /* wait for children to terminate */
1361 pid = wait(&status);
1363 if (errno != EINTR && errno != ECHILD)
1365 } else if (WIFSIGNALED(status))
1366 warnx("child terminated; signal %d", WTERMSIG(status));
1367 } while (pid != -1 || (pid == -1 && errno == EINTR));
1369 if (!safe_mode && close(sessionfd) == -1)
1370 err(1, "close(sessionfd = %d)", sessionfd);