1 5e11c00c 2021-03-02 op #include "telescope.h"
3 5e11c00c 2021-03-02 op #include <sys/socket.h>
5 5e11c00c 2021-03-02 op #include <err.h>
6 5e11c00c 2021-03-02 op #include <errno.h>
7 5e11c00c 2021-03-02 op #include <signal.h>
8 5e11c00c 2021-03-02 op #include <stdio.h>
9 5e11c00c 2021-03-02 op #include <stdlib.h>
10 5e11c00c 2021-03-02 op #include <string.h>
11 5e11c00c 2021-03-02 op #include <unistd.h>
13 35e1f40a 2021-03-14 op struct event netev, fsev;
14 5e11c00c 2021-03-02 op struct tabshead tabshead;
16 c07ac996 2021-03-12 op /* the first is also the fallback one */
17 c07ac996 2021-03-12 op static struct proto protos[] = {
18 4d3785b1 2021-03-09 op { "gemini:", load_gemini_url },
19 4d3785b1 2021-03-09 op { "about:", load_about_url },
20 4d3785b1 2021-03-09 op { NULL, NULL },
23 35e1f40a 2021-03-14 op static struct imsgbuf *netibuf, *fsibuf;
25 2051e653 2021-03-13 op static void die(void) __attribute__((__noreturn__));
26 2051e653 2021-03-13 op static struct tab *tab_by_id(uint32_t);
27 2051e653 2021-03-13 op static void handle_imsg_err(struct imsg*, size_t);
28 2051e653 2021-03-13 op static void handle_imsg_check_cert(struct imsg*, size_t);
29 2051e653 2021-03-13 op static void handle_imsg_got_code(struct imsg*, size_t);
30 2051e653 2021-03-13 op static void handle_imsg_got_meta(struct imsg*, size_t);
31 2051e653 2021-03-13 op static void handle_imsg_buf(struct imsg*, size_t);
32 2051e653 2021-03-13 op static void handle_imsg_eof(struct imsg*, size_t);
33 740f578b 2021-03-15 op static void handle_imsg_bookmark_ok(struct imsg*, size_t);
34 1304bbdd 2021-03-15 op static void handle_dispatch_imsg(int, short, void*);
35 2051e653 2021-03-13 op static void load_page_from_str(struct tab*, const char*);
36 2051e653 2021-03-13 op static void do_load_url(struct tab*, const char*);
38 5e11c00c 2021-03-02 op static imsg_handlerfn *handlers[] = {
39 5e11c00c 2021-03-02 op [IMSG_ERR] = handle_imsg_err,
40 5e11c00c 2021-03-02 op [IMSG_CHECK_CERT] = handle_imsg_check_cert,
41 5e11c00c 2021-03-02 op [IMSG_GOT_CODE] = handle_imsg_got_code,
42 5e11c00c 2021-03-02 op [IMSG_GOT_META] = handle_imsg_got_meta,
43 5e11c00c 2021-03-02 op [IMSG_BUF] = handle_imsg_buf,
44 5e11c00c 2021-03-02 op [IMSG_EOF] = handle_imsg_eof,
45 740f578b 2021-03-15 op [IMSG_BOOKMARK_OK] = handle_imsg_bookmark_ok,
48 cbcc75fb 2021-03-17 op static struct ohash certs;
50 5e11c00c 2021-03-02 op static void __attribute__((__noreturn__))
53 5e11c00c 2021-03-02 op abort(); /* TODO */
56 5e11c00c 2021-03-02 op static struct tab *
57 5e11c00c 2021-03-02 op tab_by_id(uint32_t id)
59 5e11c00c 2021-03-02 op struct tab *t;
61 5e11c00c 2021-03-02 op TAILQ_FOREACH(t, &tabshead, tabs) {
62 5e11c00c 2021-03-02 op if (t->id == id)
70 5e11c00c 2021-03-02 op handle_imsg_err(struct imsg *imsg, size_t datalen)
72 3a9b9365 2021-03-09 op struct tab *tab;
75 3a9b9365 2021-03-09 op tab = tab_by_id(imsg->hdr.peerid);
77 3a9b9365 2021-03-09 op page = imsg->data;
78 3a9b9365 2021-03-09 op page[datalen-1] = '\0';
80 3a9b9365 2021-03-09 op if (asprintf(&page, "# Error loading %s\n\n> %s\n",
81 2051e653 2021-03-13 op tab->hist_cur->h, page) == -1)
83 3a9b9365 2021-03-09 op load_page_from_str(tab, page);
88 5e11c00c 2021-03-02 op handle_imsg_check_cert(struct imsg *imsg, size_t datalen)
90 cbcc75fb 2021-03-17 op const char *hash;
92 cbcc75fb 2021-03-17 op struct tofu_entry *e;
93 cbcc75fb 2021-03-17 op struct tab *tab;
95 cbcc75fb 2021-03-17 op hash = imsg->data;
96 cbcc75fb 2021-03-17 op if (hash[datalen-1] != '\0')
99 10346511 2021-03-17 op tab = tab_by_id(imsg->hdr.peerid);
101 cbcc75fb 2021-03-17 op if ((e = telescope_lookup_tofu(&certs, tab->url.host)) == NULL) {
102 cbcc75fb 2021-03-17 op /* TODO: an update in libressl/libretls changed
103 cbcc75fb 2021-03-17 op * significantly. Find a better approach at storing
104 cbcc75fb 2021-03-17 op * the certs! */
105 cbcc75fb 2021-03-17 op if (datalen > sizeof(e->hash))
108 cbcc75fb 2021-03-17 op tofu_res = 1; /* trust on first use */
109 cbcc75fb 2021-03-17 op if ((e = calloc(1, sizeof(*e))) == NULL)
111 cbcc75fb 2021-03-17 op strlcpy(e->domain, tab->url.host, sizeof(e->domain));
112 cbcc75fb 2021-03-17 op strlcpy(e->hash, hash, sizeof(e->hash));
113 cbcc75fb 2021-03-17 op telescope_ohash_insert(&certs, e);
115 cbcc75fb 2021-03-17 op tofu_res = !strcmp(hash, e->hash);
117 cbcc75fb 2021-03-17 op if (tofu_res)
118 cbcc75fb 2021-03-17 op tab->trust = e->verified ? TS_VERIFIED : TS_TRUSTED;
120 cbcc75fb 2021-03-17 op tab->trust = TS_UNTRUSTED;
121 cbcc75fb 2021-03-17 op load_page_from_str(tab, "# Certificate mismatch\n");
123 10346511 2021-03-17 op imsg_compose(netibuf, IMSG_CERT_STATUS, imsg->hdr.peerid, 0, -1,
124 10346511 2021-03-17 op &tofu_res, sizeof(tofu_res));
125 1b8a4bbf 2021-03-12 op imsg_flush(netibuf);
128 5cd2ebb1 2021-03-11 op static inline int
129 5cd2ebb1 2021-03-11 op normalize_code(int n)
131 5cd2ebb1 2021-03-11 op if (n < 20) {
132 5cd2ebb1 2021-03-11 op if (n == 10 || n == 11)
135 5cd2ebb1 2021-03-11 op } else if (n < 30) {
137 5cd2ebb1 2021-03-11 op } else if (n < 40) {
138 5cd2ebb1 2021-03-11 op if (n == 30 || n == 31)
141 5cd2ebb1 2021-03-11 op } else if (n < 50) {
145 5cd2ebb1 2021-03-11 op } else if (n < 60) {
146 5cd2ebb1 2021-03-11 op if (n <= 53 || n == 59)
149 5cd2ebb1 2021-03-11 op } else if (n < 70) {
154 5cd2ebb1 2021-03-11 op return MALFORMED_RESPONSE;
158 5e11c00c 2021-03-02 op handle_imsg_got_code(struct imsg *imsg, size_t datalen)
160 0972d8b2 2021-03-02 op struct tab *tab;
162 0972d8b2 2021-03-02 op tab = tab_by_id(imsg->hdr.peerid);
164 0972d8b2 2021-03-02 op if (sizeof(tab->code) != datalen)
167 5cd2ebb1 2021-03-11 op memcpy(&tab->code, imsg->data, sizeof(tab->code));
168 5cd2ebb1 2021-03-11 op tab->code = normalize_code(tab->code);
169 5cd2ebb1 2021-03-11 op if (tab->code != 30 && tab->code != 31)
170 0972d8b2 2021-03-02 op tab->redirect_count = 0;
174 5e11c00c 2021-03-02 op handle_imsg_got_meta(struct imsg *imsg, size_t datalen)
176 0972d8b2 2021-03-02 op struct tab *tab;
178 0972d8b2 2021-03-02 op tab = tab_by_id(imsg->hdr.peerid);
180 0972d8b2 2021-03-02 op if (sizeof(tab->meta) <= datalen)
183 0972d8b2 2021-03-02 op memcpy(tab->meta, imsg->data, datalen);
185 5cd2ebb1 2021-03-11 op if (tab->code < 10) { /* internal errors */
186 5cd2ebb1 2021-03-11 op load_page_from_str(tab, err_pages[tab->code]);
187 5cd2ebb1 2021-03-11 op } else if (tab->code < 20) { /* 1x */
188 5cd2ebb1 2021-03-11 op load_page_from_str(tab, err_pages[tab->code]);
189 5cd2ebb1 2021-03-11 op ui_require_input(tab, tab->code == 11);
190 5cd2ebb1 2021-03-11 op } else if (tab->code == 20) {
191 c07ac996 2021-03-12 op if (setup_parser_for(tab)) {
192 1b8a4bbf 2021-03-12 op imsg_compose(netibuf, IMSG_PROCEED, tab->id, 0, -1, NULL, 0);
193 1b8a4bbf 2021-03-12 op imsg_flush(netibuf);
195 c07ac996 2021-03-12 op load_page_from_str(tab, err_pages[UNKNOWN_TYPE_OR_CSET]);
197 5cd2ebb1 2021-03-11 op } else if (tab->code < 40) { /* 3x */
198 3a9b9365 2021-03-09 op tab->redirect_count++;
200 3a9b9365 2021-03-09 op /* TODO: make customizable? */
201 3a9b9365 2021-03-09 op if (tab->redirect_count > 5) {
202 3a9b9365 2021-03-09 op load_page_from_str(tab,
203 3a9b9365 2021-03-09 op err_pages[TOO_MUCH_REDIRECTS]);
205 2051e653 2021-03-13 op do_load_url(tab, tab->meta);
206 5cd2ebb1 2021-03-11 op } else { /* 4x, 5x & 6x */
207 5cd2ebb1 2021-03-11 op load_page_from_str(tab, err_pages[tab->code]);
212 5e11c00c 2021-03-02 op handle_imsg_buf(struct imsg *imsg, size_t datalen)
214 0972d8b2 2021-03-02 op struct tab *tab;
216 0972d8b2 2021-03-02 op tab = tab_by_id(imsg->hdr.peerid);
218 0972d8b2 2021-03-02 op if (!tab->page.parse(&tab->page, imsg->data, datalen))
221 0972d8b2 2021-03-02 op ui_on_tab_refresh(tab);
225 5e11c00c 2021-03-02 op handle_imsg_eof(struct imsg *imsg, size_t datalen)
227 a5c3e03d 2021-03-02 op struct tab *t;
229 a5c3e03d 2021-03-02 op t = tab_by_id(imsg->hdr.peerid);
230 a5c3e03d 2021-03-02 op if (!t->page.free(&t->page))
233 a5c3e03d 2021-03-02 op ui_on_tab_refresh(t);
234 8af5e5ed 2021-03-08 op ui_on_tab_loaded(t);
238 740f578b 2021-03-15 op handle_imsg_bookmark_ok(struct imsg *imsg, size_t datalen)
242 740f578b 2021-03-15 op if (datalen != sizeof(res))
245 740f578b 2021-03-15 op memcpy(&res, imsg->data, sizeof(res));
246 740f578b 2021-03-15 op if (res == 0)
247 740f578b 2021-03-15 op ui_notify("Added to bookmarks!");
249 740f578b 2021-03-15 op ui_notify("Failed to add to bookmarks: %s",
250 740f578b 2021-03-15 op strerror(res));
254 1304bbdd 2021-03-15 op handle_dispatch_imsg(int fd, short ev, void *d)
256 35e1f40a 2021-03-14 op struct imsgbuf *ibuf = d;
257 1304bbdd 2021-03-15 op dispatch_imsg(ibuf, handlers, sizeof(handlers));
261 0972d8b2 2021-03-02 op load_page_from_str(struct tab *tab, const char *page)
263 0972d8b2 2021-03-02 op gemtext_initparser(&tab->page);
264 3a9b9365 2021-03-09 op if (!tab->page.parse(&tab->page, page, strlen(page)))
266 0972d8b2 2021-03-02 op if (!tab->page.free(&tab->page))
268 0972d8b2 2021-03-02 op ui_on_tab_refresh(tab);
269 8af5e5ed 2021-03-08 op ui_on_tab_loaded(tab);
273 4d3785b1 2021-03-09 op load_about_url(struct tab *tab, const char *url)
278 10346511 2021-03-17 op tab->trust = TS_VERIFIED;
280 4d3785b1 2021-03-09 op memset(&tab->url, 0, sizeof(tab->url));
282 4d3785b1 2021-03-09 op m = strchr(url, ':');
283 4d3785b1 2021-03-09 op strlcpy(tab->url.scheme, "about", sizeof(tab->url.scheme));
284 4d3785b1 2021-03-09 op strlcpy(tab->url.path, m+1, sizeof(tab->url.path));
286 2051e653 2021-03-13 op len = sizeof(tab->hist_cur->h)-1;
287 2051e653 2021-03-13 op strlcpy(tab->hist_cur->h, url, len);
289 35e1f40a 2021-03-14 op gemtext_initparser(&tab->page);
291 35e1f40a 2021-03-14 op imsg_compose(fsibuf, IMSG_GET, tab->id, 0, -1,
292 35e1f40a 2021-03-14 op tab->hist_cur->h, len+1);
293 35e1f40a 2021-03-14 op imsg_flush(fsibuf);
297 4d3785b1 2021-03-09 op load_gemini_url(struct tab *tab, const char *url)
299 4d3785b1 2021-03-09 op const char *err;
303 754622a2 2021-03-15 op len = sizeof(tab->hist_cur->h)-1;
305 4d3785b1 2021-03-09 op if (has_prefix(url, "gemini:")) {
306 4d3785b1 2021-03-09 op if (!url_parse(url, &tab->url, &err))
309 4d3785b1 2021-03-09 op if (!url_resolve_from(&tab->url, url, &err))
313 2051e653 2021-03-13 op url_unparse(&tab->url, tab->hist_cur->h, len);
314 1b8a4bbf 2021-03-12 op imsg_compose(netibuf, IMSG_GET, tab->id, 0, -1,
315 2051e653 2021-03-13 op tab->hist_cur->h, len+1);
316 1b8a4bbf 2021-03-12 op imsg_flush(netibuf);
320 4d3785b1 2021-03-09 op if (asprintf(&p, "#error loading %s\n>%s\n",
321 4d3785b1 2021-03-09 op url, err) == -1)
323 2051e653 2021-03-13 op strlcpy(tab->hist_cur->h, url, len);
324 4d3785b1 2021-03-09 op load_page_from_str(tab, p);
329 2051e653 2021-03-13 op do_load_url(struct tab *tab, const char *url)
331 4d3785b1 2021-03-09 op struct proto *p;
333 10346511 2021-03-17 op tab->trust = TS_UNKNOWN;
335 4d3785b1 2021-03-09 op for (p = protos; p->schema != NULL; ++p) {
336 4d3785b1 2021-03-09 op if (has_prefix(url, p->schema)) {
337 4d3785b1 2021-03-09 op p->loadfn(tab, url);
342 4d3785b1 2021-03-09 op protos[0].loadfn(tab, url);
346 2051e653 2021-03-13 op load_url(struct tab *tab, const char *url)
348 2051e653 2021-03-13 op if (tab->hist_cur != NULL)
349 2051e653 2021-03-13 op hist_clear_forward(&tab->hist, TAILQ_NEXT(tab->hist_cur, entries));
351 2051e653 2021-03-13 op if ((tab->hist_cur = calloc(1, sizeof(*tab->hist_cur))) == NULL) {
352 2051e653 2021-03-13 op event_loopbreak();
355 2051e653 2021-03-13 op hist_push(&tab->hist, tab->hist_cur);
356 2051e653 2021-03-13 op do_load_url(tab, url);
360 2051e653 2021-03-13 op load_previous_page(struct tab *tab)
362 2051e653 2021-03-13 op struct hist *h;
364 2051e653 2021-03-13 op if ((h = TAILQ_PREV(tab->hist_cur, mhisthead, entries)) == NULL)
366 2051e653 2021-03-13 op tab->hist_cur = h;
367 2051e653 2021-03-13 op do_load_url(tab, h->h);
372 2051e653 2021-03-13 op load_next_page(struct tab *tab)
374 2051e653 2021-03-13 op struct hist *h;
376 2051e653 2021-03-13 op if ((h = TAILQ_NEXT(tab->hist_cur, entries)) == NULL)
378 2051e653 2021-03-13 op tab->hist_cur = h;
379 2051e653 2021-03-13 op do_load_url(tab, h->h);
384 9ad4627d 2021-03-10 op stop_tab(struct tab *tab)
386 1b8a4bbf 2021-03-12 op imsg_compose(netibuf, IMSG_STOP, tab->id, 0, -1, NULL, 0);
387 1b8a4bbf 2021-03-12 op imsg_flush(netibuf);
391 740f578b 2021-03-15 op add_to_bookmarks(const char *str)
393 740f578b 2021-03-15 op imsg_compose(fsibuf, IMSG_BOOKMARK_PAGE, 0, 0, -1, str, strlen(str)+1);
394 740f578b 2021-03-15 op imsg_flush(fsibuf);
400 35e1f40a 2021-03-14 op struct imsgbuf network_ibuf, fs_ibuf;
401 35e1f40a 2021-03-14 op int net_fds[2], fs_fds[2];
404 35e1f40a 2021-03-14 op pid = getpid();
406 5e11c00c 2021-03-02 op signal(SIGCHLD, SIG_IGN);
408 35e1f40a 2021-03-14 op if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, fs_fds) == -1)
409 5e11c00c 2021-03-02 op err(1, "socketpair");
411 5e11c00c 2021-03-02 op switch (fork()) {
413 5e11c00c 2021-03-02 op err(1, "fork");
416 35e1f40a 2021-03-14 op setproctitle("(%d) fs", pid);
417 35e1f40a 2021-03-14 op close(fs_fds[0]);
418 35e1f40a 2021-03-14 op imsg_init(&fs_ibuf, fs_fds[1]);
419 35e1f40a 2021-03-14 op exit(fs_main(&fs_ibuf));
421 35e1f40a 2021-03-14 op close(fs_fds[1]);
422 35e1f40a 2021-03-14 op imsg_init(&fs_ibuf, fs_fds[0]);
423 35e1f40a 2021-03-14 op fsibuf = &fs_ibuf;
426 35e1f40a 2021-03-14 op if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, net_fds) == -1)
427 35e1f40a 2021-03-14 op err(1, "socketpair");
429 35e1f40a 2021-03-14 op switch (fork()) {
431 35e1f40a 2021-03-14 op err(1, "fork");
434 35e1f40a 2021-03-14 op setproctitle("(%d) client", pid);
435 35e1f40a 2021-03-14 op close(net_fds[0]);
436 35e1f40a 2021-03-14 op close(fs_fds[0]);
437 35e1f40a 2021-03-14 op imsg_init(&network_ibuf, net_fds[1]);
438 35e1f40a 2021-03-14 op exit(client_main(&network_ibuf));
440 35e1f40a 2021-03-14 op close(net_fds[1]);
441 35e1f40a 2021-03-14 op imsg_init(&network_ibuf, net_fds[0]);
442 35e1f40a 2021-03-14 op netibuf = &network_ibuf;
445 35e1f40a 2021-03-14 op setproctitle("(%d) ui", pid);
447 cbcc75fb 2021-03-17 op telescope_ohash_init(&certs, 5, offsetof(struct tofu_entry, domain));
449 5e11c00c 2021-03-02 op TAILQ_INIT(&tabshead);
451 5e11c00c 2021-03-02 op event_init();
453 1304bbdd 2021-03-15 op event_set(&netev, netibuf->fd, EV_READ | EV_PERSIST, handle_dispatch_imsg, netibuf);
454 35e1f40a 2021-03-14 op event_add(&netev, NULL);
456 1304bbdd 2021-03-15 op event_set(&fsev, fsibuf->fd, EV_READ | EV_PERSIST, handle_dispatch_imsg, fsibuf);
457 35e1f40a 2021-03-14 op event_add(&fsev, NULL);
461 b1d4d01b 2021-03-14 op sandbox_ui_process();
463 5e11c00c 2021-03-02 op event_dispatch();
465 1b8a4bbf 2021-03-12 op imsg_compose(netibuf, IMSG_QUIT, 0, 0, -1, NULL, 0);
466 1b8a4bbf 2021-03-12 op imsg_flush(netibuf);
468 35e1f40a 2021-03-14 op imsg_compose(fsibuf, IMSG_QUIT, 0, 0, -1, NULL, 0);
469 35e1f40a 2021-03-14 op imsg_flush(fsibuf);