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 2051e653 2021-03-13 op static void dispatch_imsg(int, short, void*);
34 2051e653 2021-03-13 op static void load_page_from_str(struct tab*, const char*);
35 2051e653 2021-03-13 op static void do_load_url(struct tab*, const char*);
37 5e11c00c 2021-03-02 op static imsg_handlerfn *handlers[] = {
38 5e11c00c 2021-03-02 op [IMSG_ERR] = handle_imsg_err,
39 5e11c00c 2021-03-02 op [IMSG_CHECK_CERT] = handle_imsg_check_cert,
40 5e11c00c 2021-03-02 op [IMSG_GOT_CODE] = handle_imsg_got_code,
41 5e11c00c 2021-03-02 op [IMSG_GOT_META] = handle_imsg_got_meta,
42 5e11c00c 2021-03-02 op [IMSG_BUF] = handle_imsg_buf,
43 5e11c00c 2021-03-02 op [IMSG_EOF] = handle_imsg_eof,
46 5e11c00c 2021-03-02 op static void __attribute__((__noreturn__))
49 5e11c00c 2021-03-02 op abort(); /* TODO */
52 5e11c00c 2021-03-02 op static struct tab *
53 5e11c00c 2021-03-02 op tab_by_id(uint32_t id)
55 5e11c00c 2021-03-02 op struct tab *t;
57 5e11c00c 2021-03-02 op TAILQ_FOREACH(t, &tabshead, tabs) {
58 5e11c00c 2021-03-02 op if (t->id == id)
66 5e11c00c 2021-03-02 op handle_imsg_err(struct imsg *imsg, size_t datalen)
68 3a9b9365 2021-03-09 op struct tab *tab;
71 3a9b9365 2021-03-09 op tab = tab_by_id(imsg->hdr.peerid);
73 3a9b9365 2021-03-09 op page = imsg->data;
74 3a9b9365 2021-03-09 op page[datalen-1] = '\0';
76 3a9b9365 2021-03-09 op if (asprintf(&page, "# Error loading %s\n\n> %s\n",
77 2051e653 2021-03-13 op tab->hist_cur->h, page) == -1)
79 3a9b9365 2021-03-09 op load_page_from_str(tab, page);
84 5e11c00c 2021-03-02 op handle_imsg_check_cert(struct imsg *imsg, size_t datalen)
86 5e11c00c 2021-03-02 op int tofu_res = 1;
88 1b8a4bbf 2021-03-12 op imsg_compose(netibuf, IMSG_CERT_STATUS, imsg->hdr.peerid, 0, -1, &tofu_res, sizeof(tofu_res));
89 1b8a4bbf 2021-03-12 op imsg_flush(netibuf);
92 5cd2ebb1 2021-03-11 op static inline int
93 5cd2ebb1 2021-03-11 op normalize_code(int n)
96 5cd2ebb1 2021-03-11 op if (n == 10 || n == 11)
99 5cd2ebb1 2021-03-11 op } else if (n < 30) {
101 5cd2ebb1 2021-03-11 op } else if (n < 40) {
102 5cd2ebb1 2021-03-11 op if (n == 30 || n == 31)
105 5cd2ebb1 2021-03-11 op } else if (n < 50) {
109 5cd2ebb1 2021-03-11 op } else if (n < 60) {
110 5cd2ebb1 2021-03-11 op if (n <= 53 || n == 59)
113 5cd2ebb1 2021-03-11 op } else if (n < 70) {
118 5cd2ebb1 2021-03-11 op return MALFORMED_RESPONSE;
122 5e11c00c 2021-03-02 op handle_imsg_got_code(struct imsg *imsg, size_t datalen)
124 0972d8b2 2021-03-02 op struct tab *tab;
126 0972d8b2 2021-03-02 op tab = tab_by_id(imsg->hdr.peerid);
128 0972d8b2 2021-03-02 op if (sizeof(tab->code) != datalen)
131 5cd2ebb1 2021-03-11 op memcpy(&tab->code, imsg->data, sizeof(tab->code));
132 5cd2ebb1 2021-03-11 op tab->code = normalize_code(tab->code);
133 5cd2ebb1 2021-03-11 op if (tab->code != 30 && tab->code != 31)
134 0972d8b2 2021-03-02 op tab->redirect_count = 0;
138 5e11c00c 2021-03-02 op handle_imsg_got_meta(struct imsg *imsg, size_t datalen)
140 0972d8b2 2021-03-02 op struct tab *tab;
142 0972d8b2 2021-03-02 op tab = tab_by_id(imsg->hdr.peerid);
144 0972d8b2 2021-03-02 op if (sizeof(tab->meta) <= datalen)
147 0972d8b2 2021-03-02 op memcpy(tab->meta, imsg->data, datalen);
149 5cd2ebb1 2021-03-11 op if (tab->code < 10) { /* internal errors */
150 5cd2ebb1 2021-03-11 op load_page_from_str(tab, err_pages[tab->code]);
151 5cd2ebb1 2021-03-11 op } else if (tab->code < 20) { /* 1x */
152 5cd2ebb1 2021-03-11 op load_page_from_str(tab, err_pages[tab->code]);
153 5cd2ebb1 2021-03-11 op ui_require_input(tab, tab->code == 11);
154 5cd2ebb1 2021-03-11 op } else if (tab->code == 20) {
155 c07ac996 2021-03-12 op if (setup_parser_for(tab)) {
156 1b8a4bbf 2021-03-12 op imsg_compose(netibuf, IMSG_PROCEED, tab->id, 0, -1, NULL, 0);
157 1b8a4bbf 2021-03-12 op imsg_flush(netibuf);
159 c07ac996 2021-03-12 op load_page_from_str(tab, err_pages[UNKNOWN_TYPE_OR_CSET]);
161 5cd2ebb1 2021-03-11 op } else if (tab->code < 40) { /* 3x */
162 3a9b9365 2021-03-09 op tab->redirect_count++;
164 3a9b9365 2021-03-09 op /* TODO: make customizable? */
165 3a9b9365 2021-03-09 op if (tab->redirect_count > 5) {
166 3a9b9365 2021-03-09 op load_page_from_str(tab,
167 3a9b9365 2021-03-09 op err_pages[TOO_MUCH_REDIRECTS]);
169 2051e653 2021-03-13 op do_load_url(tab, tab->meta);
170 5cd2ebb1 2021-03-11 op } else { /* 4x, 5x & 6x */
171 5cd2ebb1 2021-03-11 op load_page_from_str(tab, err_pages[tab->code]);
176 5e11c00c 2021-03-02 op handle_imsg_buf(struct imsg *imsg, size_t datalen)
178 0972d8b2 2021-03-02 op struct tab *tab;
180 0972d8b2 2021-03-02 op tab = tab_by_id(imsg->hdr.peerid);
182 0972d8b2 2021-03-02 op if (!tab->page.parse(&tab->page, imsg->data, datalen))
185 0972d8b2 2021-03-02 op ui_on_tab_refresh(tab);
189 5e11c00c 2021-03-02 op handle_imsg_eof(struct imsg *imsg, size_t datalen)
191 a5c3e03d 2021-03-02 op struct tab *t;
193 a5c3e03d 2021-03-02 op t = tab_by_id(imsg->hdr.peerid);
194 a5c3e03d 2021-03-02 op if (!t->page.free(&t->page))
197 a5c3e03d 2021-03-02 op ui_on_tab_refresh(t);
198 8af5e5ed 2021-03-08 op ui_on_tab_loaded(t);
202 5e11c00c 2021-03-02 op dispatch_imsg(int fd, short ev, void *d)
204 35e1f40a 2021-03-14 op struct imsgbuf *ibuf = d;
205 35e1f40a 2021-03-14 op struct imsg imsg;
206 35e1f40a 2021-03-14 op size_t datalen;
209 35e1f40a 2021-03-14 op if ((n = imsg_read(ibuf)) == -1) {
210 5e11c00c 2021-03-02 op if (errno == EAGAIN || errno == EWOULDBLOCK)
219 35e1f40a 2021-03-14 op if ((n = imsg_get(ibuf, &imsg)) == -1)
223 5e11c00c 2021-03-02 op datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
224 5e11c00c 2021-03-02 op handlers[imsg.hdr.type](&imsg, datalen);
225 5e11c00c 2021-03-02 op imsg_free(&imsg);
230 0972d8b2 2021-03-02 op load_page_from_str(struct tab *tab, const char *page)
232 0972d8b2 2021-03-02 op gemtext_initparser(&tab->page);
233 3a9b9365 2021-03-09 op if (!tab->page.parse(&tab->page, page, strlen(page)))
235 0972d8b2 2021-03-02 op if (!tab->page.free(&tab->page))
237 0972d8b2 2021-03-02 op ui_on_tab_refresh(tab);
238 8af5e5ed 2021-03-08 op ui_on_tab_loaded(tab);
242 4d3785b1 2021-03-09 op load_about_url(struct tab *tab, const char *url)
248 4d3785b1 2021-03-09 op memset(&tab->url, 0, sizeof(tab->url));
250 4d3785b1 2021-03-09 op m = strchr(url, ':');
251 4d3785b1 2021-03-09 op strlcpy(tab->url.scheme, "about", sizeof(tab->url.scheme));
252 4d3785b1 2021-03-09 op strlcpy(tab->url.path, m+1, sizeof(tab->url.path));
254 2051e653 2021-03-13 op len = sizeof(tab->hist_cur->h)-1;
255 2051e653 2021-03-13 op strlcpy(tab->hist_cur->h, url, len);
257 35e1f40a 2021-03-14 op gemtext_initparser(&tab->page);
259 35e1f40a 2021-03-14 op imsg_compose(fsibuf, IMSG_GET, tab->id, 0, -1,
260 35e1f40a 2021-03-14 op tab->hist_cur->h, len+1);
261 35e1f40a 2021-03-14 op imsg_flush(fsibuf);
265 4d3785b1 2021-03-09 op load_gemini_url(struct tab *tab, const char *url)
267 4d3785b1 2021-03-09 op const char *err;
271 4d3785b1 2021-03-09 op if (has_prefix(url, "gemini:")) {
272 4d3785b1 2021-03-09 op if (!url_parse(url, &tab->url, &err))
275 4d3785b1 2021-03-09 op if (!url_resolve_from(&tab->url, url, &err))
279 2051e653 2021-03-13 op len = sizeof(tab->hist_cur->h)-1;
280 2051e653 2021-03-13 op url_unparse(&tab->url, tab->hist_cur->h, len);
281 1b8a4bbf 2021-03-12 op imsg_compose(netibuf, IMSG_GET, tab->id, 0, -1,
282 2051e653 2021-03-13 op tab->hist_cur->h, len+1);
283 1b8a4bbf 2021-03-12 op imsg_flush(netibuf);
287 4d3785b1 2021-03-09 op if (asprintf(&p, "#error loading %s\n>%s\n",
288 4d3785b1 2021-03-09 op url, err) == -1)
290 2051e653 2021-03-13 op strlcpy(tab->hist_cur->h, url, len);
291 4d3785b1 2021-03-09 op load_page_from_str(tab, p);
296 2051e653 2021-03-13 op do_load_url(struct tab *tab, const char *url)
298 4d3785b1 2021-03-09 op struct proto *p;
300 4d3785b1 2021-03-09 op for (p = protos; p->schema != NULL; ++p) {
301 4d3785b1 2021-03-09 op if (has_prefix(url, p->schema)) {
302 4d3785b1 2021-03-09 op p->loadfn(tab, url);
307 4d3785b1 2021-03-09 op protos[0].loadfn(tab, url);
311 2051e653 2021-03-13 op load_url(struct tab *tab, const char *url)
313 2051e653 2021-03-13 op if (tab->hist_cur != NULL)
314 2051e653 2021-03-13 op hist_clear_forward(&tab->hist, TAILQ_NEXT(tab->hist_cur, entries));
316 2051e653 2021-03-13 op if ((tab->hist_cur = calloc(1, sizeof(*tab->hist_cur))) == NULL) {
317 2051e653 2021-03-13 op event_loopbreak();
320 2051e653 2021-03-13 op hist_push(&tab->hist, tab->hist_cur);
321 2051e653 2021-03-13 op do_load_url(tab, url);
325 2051e653 2021-03-13 op load_previous_page(struct tab *tab)
327 2051e653 2021-03-13 op struct hist *h;
329 2051e653 2021-03-13 op if ((h = TAILQ_PREV(tab->hist_cur, mhisthead, entries)) == NULL)
331 2051e653 2021-03-13 op tab->hist_cur = h;
332 2051e653 2021-03-13 op do_load_url(tab, h->h);
337 2051e653 2021-03-13 op load_next_page(struct tab *tab)
339 2051e653 2021-03-13 op struct hist *h;
341 2051e653 2021-03-13 op if ((h = TAILQ_NEXT(tab->hist_cur, entries)) == NULL)
343 2051e653 2021-03-13 op tab->hist_cur = h;
344 2051e653 2021-03-13 op do_load_url(tab, h->h);
349 9ad4627d 2021-03-10 op stop_tab(struct tab *tab)
351 1b8a4bbf 2021-03-12 op imsg_compose(netibuf, IMSG_STOP, tab->id, 0, -1, NULL, 0);
352 1b8a4bbf 2021-03-12 op imsg_flush(netibuf);
358 35e1f40a 2021-03-14 op struct imsgbuf network_ibuf, fs_ibuf;
359 35e1f40a 2021-03-14 op int net_fds[2], fs_fds[2];
362 35e1f40a 2021-03-14 op pid = getpid();
364 5e11c00c 2021-03-02 op signal(SIGCHLD, SIG_IGN);
366 35e1f40a 2021-03-14 op if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, fs_fds) == -1)
367 5e11c00c 2021-03-02 op err(1, "socketpair");
369 5e11c00c 2021-03-02 op switch (fork()) {
371 5e11c00c 2021-03-02 op err(1, "fork");
374 35e1f40a 2021-03-14 op setproctitle("(%d) fs", pid);
375 35e1f40a 2021-03-14 op close(fs_fds[0]);
376 35e1f40a 2021-03-14 op imsg_init(&fs_ibuf, fs_fds[1]);
377 35e1f40a 2021-03-14 op exit(fs_main(&fs_ibuf));
379 35e1f40a 2021-03-14 op close(fs_fds[1]);
380 35e1f40a 2021-03-14 op imsg_init(&fs_ibuf, fs_fds[0]);
381 35e1f40a 2021-03-14 op fsibuf = &fs_ibuf;
384 35e1f40a 2021-03-14 op if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, net_fds) == -1)
385 35e1f40a 2021-03-14 op err(1, "socketpair");
387 35e1f40a 2021-03-14 op switch (fork()) {
389 35e1f40a 2021-03-14 op err(1, "fork");
392 35e1f40a 2021-03-14 op setproctitle("(%d) client", pid);
393 35e1f40a 2021-03-14 op close(net_fds[0]);
394 35e1f40a 2021-03-14 op close(fs_fds[0]);
395 35e1f40a 2021-03-14 op imsg_init(&network_ibuf, net_fds[1]);
396 35e1f40a 2021-03-14 op exit(client_main(&network_ibuf));
398 35e1f40a 2021-03-14 op close(net_fds[1]);
399 35e1f40a 2021-03-14 op imsg_init(&network_ibuf, net_fds[0]);
400 35e1f40a 2021-03-14 op netibuf = &network_ibuf;
403 35e1f40a 2021-03-14 op setproctitle("(%d) ui", pid);
405 5e11c00c 2021-03-02 op TAILQ_INIT(&tabshead);
407 5e11c00c 2021-03-02 op event_init();
409 35e1f40a 2021-03-14 op event_set(&netev, netibuf->fd, EV_READ | EV_PERSIST, dispatch_imsg, netibuf);
410 35e1f40a 2021-03-14 op event_add(&netev, NULL);
412 35e1f40a 2021-03-14 op event_set(&fsev, fsibuf->fd, EV_READ | EV_PERSIST, dispatch_imsg, fsibuf);
413 35e1f40a 2021-03-14 op event_add(&fsev, NULL);
417 b1d4d01b 2021-03-14 op sandbox_ui_process();
419 5e11c00c 2021-03-02 op event_dispatch();
421 1b8a4bbf 2021-03-12 op imsg_compose(netibuf, IMSG_QUIT, 0, 0, -1, NULL, 0);
422 1b8a4bbf 2021-03-12 op imsg_flush(netibuf);
424 35e1f40a 2021-03-14 op imsg_compose(fsibuf, IMSG_QUIT, 0, 0, -1, NULL, 0);
425 35e1f40a 2021-03-14 op imsg_flush(fsibuf);