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 <event.h>
8 5e11c00c 2021-03-02 op #include <signal.h>
9 5e11c00c 2021-03-02 op #include <stdio.h>
10 5e11c00c 2021-03-02 op #include <stdlib.h>
11 5e11c00c 2021-03-02 op #include <string.h>
12 5e11c00c 2021-03-02 op #include <unistd.h>
14 5e11c00c 2021-03-02 op struct event imsgev;
15 5e11c00c 2021-03-02 op struct tabshead tabshead;
17 c07ac996 2021-03-12 op /* the first is also the fallback one */
18 c07ac996 2021-03-12 op static struct proto protos[] = {
19 4d3785b1 2021-03-09 op { "gemini:", load_gemini_url },
20 4d3785b1 2021-03-09 op { "about:", load_about_url },
21 4d3785b1 2021-03-09 op { NULL, NULL },
24 5e11c00c 2021-03-02 op static struct imsgbuf *ibuf;
26 5e11c00c 2021-03-02 op static void handle_imsg_err(struct imsg*, size_t);
27 5e11c00c 2021-03-02 op static void handle_imsg_check_cert(struct imsg*, size_t);
28 5e11c00c 2021-03-02 op static void handle_imsg_got_code(struct imsg*, size_t);
29 5e11c00c 2021-03-02 op static void handle_imsg_got_meta(struct imsg*, size_t);
30 5e11c00c 2021-03-02 op static void handle_imsg_buf(struct imsg*, size_t);
31 5e11c00c 2021-03-02 op static void handle_imsg_eof(struct imsg*, size_t);
33 0972d8b2 2021-03-02 op static void load_page_from_str(struct tab*, const char*);
35 5e11c00c 2021-03-02 op static imsg_handlerfn *handlers[] = {
36 5e11c00c 2021-03-02 op [IMSG_ERR] = handle_imsg_err,
37 5e11c00c 2021-03-02 op [IMSG_CHECK_CERT] = handle_imsg_check_cert,
38 5e11c00c 2021-03-02 op [IMSG_GOT_CODE] = handle_imsg_got_code,
39 5e11c00c 2021-03-02 op [IMSG_GOT_META] = handle_imsg_got_meta,
40 5e11c00c 2021-03-02 op [IMSG_BUF] = handle_imsg_buf,
41 5e11c00c 2021-03-02 op [IMSG_EOF] = handle_imsg_eof,
44 5e11c00c 2021-03-02 op static void __attribute__((__noreturn__))
47 5e11c00c 2021-03-02 op abort(); /* TODO */
50 5e11c00c 2021-03-02 op static struct tab *
51 5e11c00c 2021-03-02 op tab_by_id(uint32_t id)
53 5e11c00c 2021-03-02 op struct tab *t;
55 5e11c00c 2021-03-02 op TAILQ_FOREACH(t, &tabshead, tabs) {
56 5e11c00c 2021-03-02 op if (t->id == id)
64 5e11c00c 2021-03-02 op handle_imsg_err(struct imsg *imsg, size_t datalen)
66 3a9b9365 2021-03-09 op struct tab *tab;
69 3a9b9365 2021-03-09 op tab = tab_by_id(imsg->hdr.peerid);
71 3a9b9365 2021-03-09 op page = imsg->data;
72 3a9b9365 2021-03-09 op page[datalen-1] = '\0';
74 3a9b9365 2021-03-09 op if (asprintf(&page, "# Error loading %s\n\n> %s\n",
75 4d3785b1 2021-03-09 op tab->urlstr, page) == -1)
77 3a9b9365 2021-03-09 op load_page_from_str(tab, page);
82 5e11c00c 2021-03-02 op handle_imsg_check_cert(struct imsg *imsg, size_t datalen)
84 5e11c00c 2021-03-02 op int tofu_res = 1;
86 5e11c00c 2021-03-02 op imsg_compose(ibuf, IMSG_CERT_STATUS, imsg->hdr.peerid, 0, -1, &tofu_res, sizeof(tofu_res));
87 5e11c00c 2021-03-02 op imsg_flush(ibuf);
90 5cd2ebb1 2021-03-11 op static inline int
91 5cd2ebb1 2021-03-11 op normalize_code(int n)
94 5cd2ebb1 2021-03-11 op if (n == 10 || n == 11)
97 5cd2ebb1 2021-03-11 op } else if (n < 30) {
99 5cd2ebb1 2021-03-11 op } else if (n < 40) {
100 5cd2ebb1 2021-03-11 op if (n == 30 || n == 31)
103 5cd2ebb1 2021-03-11 op } else if (n < 50) {
107 5cd2ebb1 2021-03-11 op } else if (n < 60) {
108 5cd2ebb1 2021-03-11 op if (n <= 53 || n == 59)
111 5cd2ebb1 2021-03-11 op } else if (n < 70) {
116 5cd2ebb1 2021-03-11 op return MALFORMED_RESPONSE;
120 5e11c00c 2021-03-02 op handle_imsg_got_code(struct imsg *imsg, size_t datalen)
122 0972d8b2 2021-03-02 op struct tab *tab;
124 0972d8b2 2021-03-02 op tab = tab_by_id(imsg->hdr.peerid);
126 0972d8b2 2021-03-02 op if (sizeof(tab->code) != datalen)
129 5cd2ebb1 2021-03-11 op memcpy(&tab->code, imsg->data, sizeof(tab->code));
130 5cd2ebb1 2021-03-11 op tab->code = normalize_code(tab->code);
131 5cd2ebb1 2021-03-11 op if (tab->code != 30 && tab->code != 31)
132 0972d8b2 2021-03-02 op tab->redirect_count = 0;
136 5e11c00c 2021-03-02 op handle_imsg_got_meta(struct imsg *imsg, size_t datalen)
138 0972d8b2 2021-03-02 op struct tab *tab;
140 0972d8b2 2021-03-02 op tab = tab_by_id(imsg->hdr.peerid);
142 0972d8b2 2021-03-02 op if (sizeof(tab->meta) <= datalen)
145 0972d8b2 2021-03-02 op memcpy(tab->meta, imsg->data, datalen);
147 5cd2ebb1 2021-03-11 op if (tab->code < 10) { /* internal errors */
148 5cd2ebb1 2021-03-11 op load_page_from_str(tab, err_pages[tab->code]);
149 5cd2ebb1 2021-03-11 op } else if (tab->code < 20) { /* 1x */
150 5cd2ebb1 2021-03-11 op load_page_from_str(tab, err_pages[tab->code]);
151 5cd2ebb1 2021-03-11 op ui_require_input(tab, tab->code == 11);
152 5cd2ebb1 2021-03-11 op } else if (tab->code == 20) {
153 c07ac996 2021-03-12 op if (setup_parser_for(tab)) {
154 c07ac996 2021-03-12 op imsg_compose(ibuf, IMSG_PROCEED, tab->id, 0, -1, NULL, 0);
155 c07ac996 2021-03-12 op imsg_flush(ibuf);
157 c07ac996 2021-03-12 op load_page_from_str(tab, err_pages[UNKNOWN_TYPE_OR_CSET]);
159 5cd2ebb1 2021-03-11 op } else if (tab->code < 40) { /* 3x */
160 3a9b9365 2021-03-09 op tab->redirect_count++;
162 3a9b9365 2021-03-09 op /* TODO: make customizable? */
163 3a9b9365 2021-03-09 op if (tab->redirect_count > 5) {
164 3a9b9365 2021-03-09 op load_page_from_str(tab,
165 3a9b9365 2021-03-09 op err_pages[TOO_MUCH_REDIRECTS]);
167 5cd2ebb1 2021-03-11 op load_url(tab, tab->meta);
168 5cd2ebb1 2021-03-11 op } else { /* 4x, 5x & 6x */
169 5cd2ebb1 2021-03-11 op load_page_from_str(tab, err_pages[tab->code]);
174 5e11c00c 2021-03-02 op handle_imsg_buf(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 (!tab->page.parse(&tab->page, imsg->data, datalen))
183 0972d8b2 2021-03-02 op ui_on_tab_refresh(tab);
187 5e11c00c 2021-03-02 op handle_imsg_eof(struct imsg *imsg, size_t datalen)
189 a5c3e03d 2021-03-02 op struct tab *t;
191 a5c3e03d 2021-03-02 op t = tab_by_id(imsg->hdr.peerid);
192 a5c3e03d 2021-03-02 op if (!t->page.free(&t->page))
195 a5c3e03d 2021-03-02 op ui_on_tab_refresh(t);
196 8af5e5ed 2021-03-08 op ui_on_tab_loaded(t);
200 5e11c00c 2021-03-02 op dispatch_imsg(int fd, short ev, void *d)
202 5e11c00c 2021-03-02 op struct imsg imsg;
203 5e11c00c 2021-03-02 op size_t datalen;
206 5e11c00c 2021-03-02 op if ((n = imsg_read(ibuf)) == -1) {
207 5e11c00c 2021-03-02 op if (errno == EAGAIN || errno == EWOULDBLOCK)
212 5e11c00c 2021-03-02 op if (n == 0) {
213 5e11c00c 2021-03-02 op fprintf(stderr, "other side is dead\n");
218 5e11c00c 2021-03-02 op if ((n = imsg_get(ibuf, &imsg)) == -1)
222 5e11c00c 2021-03-02 op datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
223 5e11c00c 2021-03-02 op handlers[imsg.hdr.type](&imsg, datalen);
224 5e11c00c 2021-03-02 op imsg_free(&imsg);
229 0972d8b2 2021-03-02 op load_page_from_str(struct tab *tab, const char *page)
231 0972d8b2 2021-03-02 op gemtext_initparser(&tab->page);
232 3a9b9365 2021-03-09 op if (!tab->page.parse(&tab->page, page, strlen(page)))
234 0972d8b2 2021-03-02 op if (!tab->page.free(&tab->page))
236 0972d8b2 2021-03-02 op ui_on_tab_refresh(tab);
237 8af5e5ed 2021-03-08 op ui_on_tab_loaded(tab);
241 4d3785b1 2021-03-09 op load_about_url(struct tab *tab, const char *url)
245 4d3785b1 2021-03-09 op memset(tab->urlstr, 0, sizeof(tab->urlstr));
246 4d3785b1 2021-03-09 op memset(&tab->url, 0, sizeof(tab->url));
248 4d3785b1 2021-03-09 op m = strchr(url, ':');
249 4d3785b1 2021-03-09 op strlcpy(tab->url.scheme, "about", sizeof(tab->url.scheme));
250 4d3785b1 2021-03-09 op strlcpy(tab->url.path, m+1, sizeof(tab->url.path));
252 097ff997 2021-03-09 op strlcpy(tab->urlstr, url, sizeof(tab->urlstr));
254 4d3785b1 2021-03-09 op if (!strcmp(url, "about:new"))
255 0972d8b2 2021-03-02 op load_page_from_str(tab, about_new);
257 4d3785b1 2021-03-09 op load_page_from_str(tab, "# not found\n");
261 4d3785b1 2021-03-09 op load_gemini_url(struct tab *tab, const char *url)
263 4d3785b1 2021-03-09 op const char *err;
266 4d3785b1 2021-03-09 op if (has_prefix(url, "gemini:")) {
267 4d3785b1 2021-03-09 op if (!url_parse(url, &tab->url, &err))
270 4d3785b1 2021-03-09 op if (!url_resolve_from(&tab->url, url, &err))
274 4d3785b1 2021-03-09 op url_unparse(&tab->url, tab->urlstr, sizeof(tab->urlstr));
275 4d3785b1 2021-03-09 op imsg_compose(ibuf, IMSG_GET, tab->id, 0, -1,
276 4d3785b1 2021-03-09 op tab->urlstr, strlen(tab->urlstr)+1);
277 0972d8b2 2021-03-02 op imsg_flush(ibuf);
281 4d3785b1 2021-03-09 op if (asprintf(&p, "#error loading %s\n>%s\n",
282 4d3785b1 2021-03-09 op url, err) == -1)
284 4d3785b1 2021-03-09 op strlcpy(tab->urlstr, url, sizeof(tab->urlstr));
285 4d3785b1 2021-03-09 op load_page_from_str(tab, p);
290 4d3785b1 2021-03-09 op load_url(struct tab *tab, const char *url)
292 4d3785b1 2021-03-09 op struct proto *p;
294 4d3785b1 2021-03-09 op for (p = protos; p->schema != NULL; ++p) {
295 4d3785b1 2021-03-09 op if (has_prefix(url, p->schema)) {
296 4d3785b1 2021-03-09 op p->loadfn(tab, url);
301 4d3785b1 2021-03-09 op protos[0].loadfn(tab, url);
305 9ad4627d 2021-03-10 op stop_tab(struct tab *tab)
307 9ad4627d 2021-03-10 op imsg_compose(ibuf, IMSG_STOP, tab->id, 0, -1, NULL, 0);
308 9ad4627d 2021-03-10 op imsg_flush(ibuf);
314 5e11c00c 2021-03-02 op struct imsgbuf main_ibuf, network_ibuf;
315 5e11c00c 2021-03-02 op int imsg_fds[2];
317 5e11c00c 2021-03-02 op signal(SIGCHLD, SIG_IGN);
319 5e11c00c 2021-03-02 op if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1)
320 5e11c00c 2021-03-02 op err(1, "socketpair");
322 5e11c00c 2021-03-02 op switch (fork()) {
324 5e11c00c 2021-03-02 op err(1, "fork");
327 5e11c00c 2021-03-02 op setproctitle("client");
328 5e11c00c 2021-03-02 op close(imsg_fds[0]);
329 5e11c00c 2021-03-02 op imsg_init(&network_ibuf, imsg_fds[1]);
330 5e11c00c 2021-03-02 op exit(client_main(&network_ibuf));
333 5e11c00c 2021-03-02 op close(imsg_fds[1]);
334 5e11c00c 2021-03-02 op imsg_init(&main_ibuf, imsg_fds[0]);
335 5e11c00c 2021-03-02 op ibuf = &main_ibuf;
337 5e11c00c 2021-03-02 op TAILQ_INIT(&tabshead);
339 5e11c00c 2021-03-02 op event_init();
341 5e11c00c 2021-03-02 op event_set(&imsgev, ibuf->fd, EV_READ | EV_PERSIST, dispatch_imsg, ibuf);
342 5e11c00c 2021-03-02 op event_add(&imsgev, NULL);
346 5e11c00c 2021-03-02 op event_dispatch();
348 5e11c00c 2021-03-02 op imsg_compose(ibuf, IMSG_QUIT, 0, 0, -1, NULL, 0);
349 5e11c00c 2021-03-02 op imsg_flush(ibuf);