2 35e1f40a 2021-03-14 op * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
4 35e1f40a 2021-03-14 op * Permission to use, copy, modify, and distribute this software for any
5 35e1f40a 2021-03-14 op * purpose with or without fee is hereby granted, provided that the above
6 35e1f40a 2021-03-14 op * copyright notice and this permission notice appear in all copies.
8 35e1f40a 2021-03-14 op * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 35e1f40a 2021-03-14 op * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 35e1f40a 2021-03-14 op * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 35e1f40a 2021-03-14 op * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 35e1f40a 2021-03-14 op * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 35e1f40a 2021-03-14 op * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 35e1f40a 2021-03-14 op * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 eb2ed626 2021-10-07 op * Handles config and runtime files
21 786e6deb 2021-07-21 op #include "compat.h"
23 6cd6a9e1 2021-03-20 op #include <sys/stat.h>
24 65124267 2021-08-13 op #include <sys/types.h>
26 65124267 2021-08-13 op #include <dirent.h>
27 35e1f40a 2021-03-14 op #include <errno.h>
28 de2a69bb 2021-05-17 op #include <fcntl.h>
29 35e1f40a 2021-03-14 op #include <limits.h>
30 eb2ed626 2021-10-07 op #include <libgen.h>
31 35e1f40a 2021-03-14 op #include <stdio.h>
32 35e1f40a 2021-03-14 op #include <stdlib.h>
33 35e1f40a 2021-03-14 op #include <string.h>
34 35e1f40a 2021-03-14 op #include <unistd.h>
36 eb2ed626 2021-10-07 op #include "fs.h"
37 5a824be4 2021-07-13 op #include "pages.h"
38 328e7915 2021-09-19 op #include "telescope.h"
39 eb9cbcba 2022-01-03 op #include "session.h"
41 35e1f40a 2021-03-14 op static void die(void) __attribute__((__noreturn__));
42 fb4dc49f 2021-08-13 op static void send_file(uint32_t, FILE *);
43 35e1f40a 2021-03-14 op static void handle_get(struct imsg*, size_t);
44 5cbe1763 2021-08-13 op static int select_non_dot(const struct dirent *);
45 5cbe1763 2021-08-13 op static int select_non_dotdot(const struct dirent *);
46 fb4dc49f 2021-08-13 op static void handle_get_file(struct imsg*, size_t);
47 50f03682 2022-01-03 op static void handle_misc(struct imsg *, size_t);
48 740f578b 2021-03-15 op static void handle_bookmark_page(struct imsg*, size_t);
49 3a227e9a 2021-03-18 op static void handle_save_cert(struct imsg*, size_t);
50 288fd238 2021-04-25 op static void handle_update_cert(struct imsg*, size_t);
51 de2a69bb 2021-05-17 op static void handle_file_open(struct imsg*, size_t);
52 c7107cec 2021-04-01 op static void handle_session_start(struct imsg*, size_t);
53 c7107cec 2021-04-01 op static void handle_session_tab(struct imsg*, size_t);
54 1040cc7f 2021-01-02 op static void handle_session_tab_hist(struct imsg*, size_t);
55 c7107cec 2021-04-01 op static void handle_session_end(struct imsg*, size_t);
56 1304bbdd 2021-03-15 op static void handle_dispatch_imsg(int, short, void*);
57 bc10f6a5 2021-07-12 op static int fs_send_ui(int, uint32_t, int, const void *, uint16_t);
58 eb2ed626 2021-10-07 op static size_t join_path(char*, const char*, const char*, size_t);
59 eb2ed626 2021-10-07 op static void getenv_default(char*, const char*, const char*, size_t);
60 eb2ed626 2021-10-07 op static void mkdirs(const char*, mode_t);
61 6c8ddace 2022-01-03 op static void init_paths(void);
62 50f03682 2022-01-03 op static void load_last_session(void);
63 eb722b50 2022-01-03 op static void load_certs(void);
65 bc10f6a5 2021-07-12 op static struct imsgev *iev_ui;
66 c7107cec 2021-04-01 op static FILE *session;
69 f88fbabc 2021-11-27 op * Where to store user data. These are all equal to ~/.telescope if
72 fb3d08c1 2021-10-07 op char config_path_base[PATH_MAX];
73 fb3d08c1 2021-10-07 op char data_path_base[PATH_MAX];
74 fb3d08c1 2021-10-07 op char cache_path_base[PATH_MAX];
76 eb2ed626 2021-10-07 op char config_path[PATH_MAX];
77 fb3d08c1 2021-10-07 op char lockfile_path[PATH_MAX];
78 fb3d08c1 2021-10-07 op char bookmark_file[PATH_MAX];
79 fb3d08c1 2021-10-07 op char known_hosts_file[PATH_MAX], known_hosts_tmp[PATH_MAX];
80 fb3d08c1 2021-10-07 op char crashed_file[PATH_MAX];
81 fb3d08c1 2021-10-07 op char session_file[PATH_MAX];
83 35e1f40a 2021-03-14 op static imsg_handlerfn *handlers[] = {
84 35e1f40a 2021-03-14 op [IMSG_GET] = handle_get,
85 fb4dc49f 2021-08-13 op [IMSG_GET_FILE] = handle_get_file,
86 50f03682 2022-01-03 op [IMSG_QUIT] = handle_misc,
87 50f03682 2022-01-03 op [IMSG_INIT] = handle_misc,
88 740f578b 2021-03-15 op [IMSG_BOOKMARK_PAGE] = handle_bookmark_page,
89 3a227e9a 2021-03-18 op [IMSG_SAVE_CERT] = handle_save_cert,
90 288fd238 2021-04-25 op [IMSG_UPDATE_CERT] = handle_update_cert,
91 de2a69bb 2021-05-17 op [IMSG_FILE_OPEN] = handle_file_open,
92 c7107cec 2021-04-01 op [IMSG_SESSION_START] = handle_session_start,
93 c7107cec 2021-04-01 op [IMSG_SESSION_TAB] = handle_session_tab,
94 1040cc7f 2021-01-02 op [IMSG_SESSION_TAB_HIST] = handle_session_tab_hist,
95 c7107cec 2021-04-01 op [IMSG_SESSION_END] = handle_session_end,
98 35e1f40a 2021-03-14 op static void __attribute__((__noreturn__))
101 35e1f40a 2021-03-14 op abort(); /* TODO */
105 fb4dc49f 2021-08-13 op send_file(uint32_t peerid, FILE *f)
108 fb4dc49f 2021-08-13 op char buf[BUFSIZ];
111 fb4dc49f 2021-08-13 op r = fread(buf, 1, sizeof(buf), f);
113 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_BUF, peerid, -1, buf, r);
114 fb4dc49f 2021-08-13 op if (r != sizeof(buf))
117 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_EOF, peerid, -1, NULL, 0);
122 35e1f40a 2021-03-14 op handle_get(struct imsg *imsg, size_t datalen)
124 56e7efb4 2021-07-21 op const char *bpath = "bookmarks.gmi";
125 fb4dc49f 2021-08-13 op char path[PATH_MAX];
127 a2728733 2021-07-18 op const char *data, *p;
129 a2728733 2021-07-18 op struct page {
130 a2728733 2021-07-18 op const char *name;
131 56e7efb4 2021-07-21 op const char *path;
132 a2728733 2021-07-18 op const uint8_t *data;
134 a2728733 2021-07-18 op } pages[] = {
135 56e7efb4 2021-07-21 op {"about", NULL, about_about, about_about_len},
136 56e7efb4 2021-07-21 op {"blank", NULL, about_blank, about_blank_len},
137 56e7efb4 2021-07-21 op {"bookmarks", bpath, bookmarks, bookmarks_len},
138 56e7efb4 2021-07-21 op {"crash", NULL, about_crash, about_crash_len},
139 56e7efb4 2021-07-21 op {"help", NULL, about_help, about_help_len},
140 56e7efb4 2021-07-21 op {"license", NULL, about_license, about_license_len},
141 56e7efb4 2021-07-21 op {"new", NULL, about_new, about_new_len},
142 56e7efb4 2021-07-21 op }, *page = NULL;
144 35e1f40a 2021-03-14 op data = imsg->data;
145 56e7efb4 2021-07-21 op if (data[datalen-1] != '\0') /* make sure it's NUL-terminated */
147 56e7efb4 2021-07-21 op if ((data = strchr(data, ':')) == NULL)
148 56e7efb4 2021-07-21 op goto notfound;
151 56e7efb4 2021-07-21 op for (i = 0; i < sizeof(pages)/sizeof(pages[0]); ++i)
152 56e7efb4 2021-07-21 op if (!strcmp(data, pages[i].name)) {
153 56e7efb4 2021-07-21 op page = &pages[i];
157 56e7efb4 2021-07-21 op if (page == NULL)
158 56e7efb4 2021-07-21 op goto notfound;
160 de04b178 2021-11-26 op strlcpy(path, data_path_base, sizeof(path));
161 56e7efb4 2021-07-21 op strlcat(path, "/", sizeof(path));
162 56e7efb4 2021-07-21 op if (page->path != NULL)
163 56e7efb4 2021-07-21 op strlcat(path, page->path, sizeof(path));
165 56e7efb4 2021-07-21 op strlcat(path, "pages/about_", sizeof(path));
166 56e7efb4 2021-07-21 op strlcat(path, page->name, sizeof(path));
167 56e7efb4 2021-07-21 op strlcat(path, ".gmi", sizeof(path));
170 56e7efb4 2021-07-21 op if ((f = fopen(path, "r")) == NULL) {
171 56e7efb4 2021-07-21 op fs_send_ui(IMSG_BUF, imsg->hdr.peerid, -1,
172 56e7efb4 2021-07-21 op page->data, page->len);
173 56e7efb4 2021-07-21 op fs_send_ui(IMSG_EOF, imsg->hdr.peerid, -1,
178 fb4dc49f 2021-08-13 op send_file(imsg->hdr.peerid, f);
182 a2728733 2021-07-18 op p = "# not found!\n";
183 a2728733 2021-07-18 op fs_send_ui(IMSG_BUF, imsg->hdr.peerid, -1, p, strlen(p));
184 a2728733 2021-07-18 op fs_send_ui(IMSG_EOF, imsg->hdr.peerid, -1, NULL, 0);
187 fb4dc49f 2021-08-13 op static inline void
188 fb4dc49f 2021-08-13 op send_hdr(uint32_t peerid, int code, const char *meta)
190 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_GOT_CODE, peerid, -1, &code, sizeof(code));
191 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_GOT_META, peerid, -1, meta, strlen(meta)+1);
194 24a68158 2021-08-13 op static inline void
195 24a68158 2021-08-13 op send_errno(uint32_t peerid, int code, const char *str, int no)
199 24a68158 2021-08-13 op if (asprintf(&s, "%s: %s", str, strerror(no)) == -1)
202 24a68158 2021-08-13 op send_hdr(peerid, code, s == NULL ? str : s);
206 65124267 2021-08-13 op static inline const char *
207 65124267 2021-08-13 op file_type(const char *path)
209 fb4dc49f 2021-08-13 op struct mapping {
210 fb4dc49f 2021-08-13 op const char *ext;
211 fb4dc49f 2021-08-13 op const char *mime;
213 fb4dc49f 2021-08-13 op {"diff", "text/x-patch"},
214 fb4dc49f 2021-08-13 op {"gemini", "text/gemini"},
215 fb4dc49f 2021-08-13 op {"gmi", "text/gemini"},
216 fb4dc49f 2021-08-13 op {"markdown", "text/plain"},
217 fb4dc49f 2021-08-13 op {"md", "text/plain"},
218 fb4dc49f 2021-08-13 op {"patch", "text/x-patch"},
219 fb4dc49f 2021-08-13 op {"txt", "text/plain"},
220 fb4dc49f 2021-08-13 op {NULL, NULL},
224 65124267 2021-08-13 op if ((dot = strrchr(path, '.')) == NULL)
229 65124267 2021-08-13 op for (m = ms; m->ext != NULL; ++m)
230 65124267 2021-08-13 op if (!strcmp(m->ext, dot))
231 65124267 2021-08-13 op return m->mime;
237 5cbe1763 2021-08-13 op select_non_dot(const struct dirent *d)
239 5cbe1763 2021-08-13 op return strcmp(d->d_name, ".");
243 5cbe1763 2021-08-13 op select_non_dotdot(const struct dirent *d)
245 5cbe1763 2021-08-13 op return strcmp(d->d_name, ".") && strcmp(d->d_name, "..");
248 65124267 2021-08-13 op static inline void
249 65124267 2021-08-13 op send_dir(uint32_t peerid, const char *path)
251 65124267 2021-08-13 op struct dirent **names;
252 65124267 2021-08-13 op struct evbuffer *ev;
254 5cbe1763 2021-08-13 op int (*selector)(const struct dirent *) = select_non_dot;
255 24a68158 2021-08-13 op int i, len, no;
257 5d43215b 2021-08-13 op if (!has_suffix(path, "/")) {
258 5d43215b 2021-08-13 op if (asprintf(&s, "%s/", path) == -1)
260 5d43215b 2021-08-13 op send_hdr(peerid, 30, s);
265 5cbe1763 2021-08-13 op if (!strcmp(path, "/"))
266 5cbe1763 2021-08-13 op selector = select_non_dotdot;
268 65124267 2021-08-13 op if ((ev = evbuffer_new()) == NULL ||
269 5cbe1763 2021-08-13 op (len = scandir(path, &names, selector, alphasort)) == -1) {
271 65124267 2021-08-13 op evbuffer_free(ev);
272 24a68158 2021-08-13 op send_errno(peerid, 40, "failure reading the directory", no);
276 65124267 2021-08-13 op evbuffer_add_printf(ev, "# Index of %s\n\n", path);
277 65124267 2021-08-13 op for (i = 0; i < len; ++i) {
278 65124267 2021-08-13 op evbuffer_add_printf(ev, "=> %s", names[i]->d_name);
279 65124267 2021-08-13 op if (names[i]->d_type == DT_DIR)
280 65124267 2021-08-13 op evbuffer_add(ev, "/", 1);
281 65124267 2021-08-13 op evbuffer_add(ev, "\n", 1);
284 65124267 2021-08-13 op send_hdr(peerid, 20, "text/gemini");
285 65124267 2021-08-13 op fs_send_ui(IMSG_BUF, peerid, -1,
286 65124267 2021-08-13 op EVBUFFER_DATA(ev), EVBUFFER_LENGTH(ev));
287 65124267 2021-08-13 op fs_send_ui(IMSG_EOF, peerid, -1, NULL, 0);
289 65124267 2021-08-13 op evbuffer_free(ev);
294 65124267 2021-08-13 op handle_get_file(struct imsg *imsg, size_t datalen)
296 65124267 2021-08-13 op struct stat sb;
299 fb4dc49f 2021-08-13 op const char *meta = NULL;
301 fb4dc49f 2021-08-13 op data = imsg->data;
302 fb4dc49f 2021-08-13 op data[datalen-1] = '\0';
304 65124267 2021-08-13 op if ((f = fopen(data, "r")) == NULL) {
305 24a68158 2021-08-13 op send_errno(imsg->hdr.peerid, 51, "can't open", errno);
309 65124267 2021-08-13 op if (fstat(fileno(f), &sb) == -1) {
310 24a68158 2021-08-13 op send_errno(imsg->hdr.peerid, 40, "fstat", errno);
314 65124267 2021-08-13 op if (S_ISDIR(sb.st_mode)) {
316 65124267 2021-08-13 op send_dir(imsg->hdr.peerid, data);
320 65124267 2021-08-13 op if ((meta = file_type(data)) == NULL) {
322 65124267 2021-08-13 op send_hdr(imsg->hdr.peerid, 51,
323 65124267 2021-08-13 op "don't know how to visualize this file");
327 fb4dc49f 2021-08-13 op send_hdr(imsg->hdr.peerid, 20, meta);
328 fb4dc49f 2021-08-13 op send_file(imsg->hdr.peerid, f);
332 50f03682 2022-01-03 op handle_misc(struct imsg *imsg, size_t datalen)
334 50f03682 2022-01-03 op switch (imsg->hdr.type) {
335 50f03682 2022-01-03 op case IMSG_INIT:
336 eb722b50 2022-01-03 op load_certs();
337 50f03682 2022-01-03 op load_last_session();
340 50f03682 2022-01-03 op case IMSG_QUIT:
341 50f03682 2022-01-03 op if (!safe_mode)
342 50f03682 2022-01-03 op unlink(crashed_file);
343 50f03682 2022-01-03 op event_loopbreak();
352 740f578b 2021-03-15 op handle_bookmark_page(struct imsg *imsg, size_t datalen)
358 740f578b 2021-03-15 op data = imsg->data;
359 740f578b 2021-03-15 op if (data[datalen-1] != '\0')
362 740f578b 2021-03-15 op if ((f = fopen(bookmark_file, "a")) == NULL) {
366 740f578b 2021-03-15 op fprintf(f, "=> %s\n", data);
371 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_BOOKMARK_OK, 0, -1, &res, sizeof(res));
375 3a227e9a 2021-03-18 op handle_save_cert(struct imsg *imsg, size_t datalen)
377 3a227e9a 2021-03-18 op struct tofu_entry e;
381 3a227e9a 2021-03-18 op /* TODO: traverse the file to avoid duplications? */
383 3a227e9a 2021-03-18 op if (datalen != sizeof(e))
385 3a227e9a 2021-03-18 op memcpy(&e, imsg->data, datalen);
387 3a227e9a 2021-03-18 op if ((f = fopen(known_hosts_file, "a")) == NULL) {
391 3a227e9a 2021-03-18 op fprintf(f, "%s %s %d\n", e.domain, e.hash, e.verified);
396 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_SAVE_CERT_OK, imsg->hdr.peerid, -1,
397 288fd238 2021-04-25 op &res, sizeof(res));
401 288fd238 2021-04-25 op handle_update_cert(struct imsg *imsg, size_t datalen)
403 288fd238 2021-04-25 op FILE *tmp, *f;
404 288fd238 2021-04-25 op struct tofu_entry entry;
405 288fd238 2021-04-25 op char sfn[PATH_MAX], *line = NULL, *t;
406 288fd238 2021-04-25 op size_t l, linesize = 0;
407 288fd238 2021-04-25 op ssize_t linelen;
408 288fd238 2021-04-25 op int fd, e, res = 0;
410 288fd238 2021-04-25 op if (datalen != sizeof(entry))
412 288fd238 2021-04-25 op memcpy(&entry, imsg->data, datalen);
414 288fd238 2021-04-25 op strlcpy(sfn, known_hosts_tmp, sizeof(sfn));
415 288fd238 2021-04-25 op if ((fd = mkstemp(sfn)) == -1 ||
416 288fd238 2021-04-25 op (tmp = fdopen(fd, "w")) == NULL) {
417 288fd238 2021-04-25 op if (fd != -1) {
425 288fd238 2021-04-25 op if ((f = fopen(known_hosts_file, "r")) == NULL) {
432 288fd238 2021-04-25 op l = strlen(entry.domain);
433 288fd238 2021-04-25 op while ((linelen = getline(&line, &linesize, f)) != -1) {
434 288fd238 2021-04-25 op if ((t = strstr(line, entry.domain)) != NULL &&
435 288fd238 2021-04-25 op (line[l] == ' ' || line[l] == '\t'))
437 288fd238 2021-04-25 op /* line has a trailing \n */
438 288fd238 2021-04-25 op fprintf(tmp, "%s", line);
440 288fd238 2021-04-25 op fprintf(tmp, "%s %s %d\n", entry.domain, entry.hash, entry.verified);
443 288fd238 2021-04-25 op e = ferror(tmp);
454 288fd238 2021-04-25 op res = rename(sfn, known_hosts_file) != -1;
457 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_UPDATE_CERT_OK, imsg->hdr.peerid, -1,
458 3a227e9a 2021-03-18 op &res, sizeof(res));
462 de2a69bb 2021-05-17 op handle_file_open(struct imsg *imsg, size_t datalen)
464 de2a69bb 2021-05-17 op char *path, *e;
467 de2a69bb 2021-05-17 op path = imsg->data;
468 de2a69bb 2021-05-17 op if (path[datalen-1] != '\0')
471 de2a69bb 2021-05-17 op if ((fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, 0644)) == -1) {
472 de2a69bb 2021-05-17 op e = strerror(errno);
473 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_FILE_OPENED, imsg->hdr.peerid, -1,
474 de2a69bb 2021-05-17 op e, strlen(e)+1);
476 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_FILE_OPENED, imsg->hdr.peerid, fd,
481 c7107cec 2021-04-01 op handle_session_start(struct imsg *imsg, size_t datalen)
483 c7107cec 2021-04-01 op if (datalen != 0)
486 c7107cec 2021-04-01 op if ((session = fopen(session_file, "w")) == NULL)
491 c7107cec 2021-04-01 op handle_session_tab(struct imsg *imsg, size_t datalen)
493 f8c6e753 2021-12-30 op struct session_tab tab;
495 c7107cec 2021-04-01 op if (session == NULL)
498 f8c6e753 2021-12-30 op if (datalen != sizeof(tab))
501 f8c6e753 2021-12-30 op memcpy(&tab, imsg->data, sizeof(tab));
502 f8c6e753 2021-12-30 op if (tab.uri[sizeof(tab.uri)-1] != '\0' ||
503 f8c6e753 2021-12-30 op tab.title[sizeof(tab.title)-1] != '\0')
506 f8c6e753 2021-12-30 op fprintf(session, "%s", tab.uri);
508 f8c6e753 2021-12-30 op if (tab.flags & TAB_CURRENT)
509 2f524b17 2021-07-17 op fprintf(session, " current ");
511 2f524b17 2021-07-17 op fprintf(session, " - ");
513 f8c6e753 2021-12-30 op fprintf(session, "%s\n", tab.title);
517 1040cc7f 2021-01-02 op handle_session_tab_hist(struct imsg *imsg, size_t datalen)
519 1040cc7f 2021-01-02 op struct session_tab_hist th;
521 1040cc7f 2021-01-02 op if (session == NULL)
524 1040cc7f 2021-01-02 op if (datalen != sizeof(th))
527 1040cc7f 2021-01-02 op memcpy(&th, imsg->data, sizeof(th));
528 1040cc7f 2021-01-02 op if (th.uri[sizeof(th.uri)-1] != '\0')
531 1040cc7f 2021-01-02 op fprintf(session, "%s %s\n", th.future ? ">" : "<", th.uri);
535 c7107cec 2021-04-01 op handle_session_end(struct imsg *imsg, size_t datalen)
537 c7107cec 2021-04-01 op if (session == NULL)
539 c7107cec 2021-04-01 op fclose(session);
540 c7107cec 2021-04-01 op session = NULL;
544 1304bbdd 2021-03-15 op handle_dispatch_imsg(int fd, short ev, void *d)
546 bc10f6a5 2021-07-12 op struct imsgev *iev = d;
549 ea080950 2021-07-20 op if (dispatch_imsg(iev, ev, handlers, sizeof(handlers)) == -1) {
551 eb2ed626 2021-10-07 op * This should leave a ~/.cache/telescope/crashed file to
552 ea080950 2021-07-20 op * trigger about:crash on next run. Unfortunately, if
553 ea080950 2021-07-20 op * the main process dies the fs sticks around and
554 ea080950 2021-07-20 op * doesn't notice that the fd was closed. Why EV_READ
555 ea080950 2021-07-20 op * is not triggered when a fd is closed on the other end?
558 ea080950 2021-07-20 op if ((fd = open(crashed_file, O_CREAT|O_TRUNC|O_WRONLY, 0600))
560 ea080950 2021-07-20 op err(1, "open");
562 ea080950 2021-07-20 op errx(1, "connection closed: %s", strerror(e));
567 bc10f6a5 2021-07-12 op fs_send_ui(int type, uint32_t peerid, int fd, const void *data,
568 bc10f6a5 2021-07-12 op uint16_t datalen)
570 bc10f6a5 2021-07-12 op return imsg_compose_event(iev_ui, type, peerid, 0, fd,
571 bc10f6a5 2021-07-12 op data, datalen);
574 eb2ed626 2021-10-07 op static size_t
575 eb2ed626 2021-10-07 op join_path(char *buf, const char *lhs, const char *rhs, size_t buflen)
577 eb2ed626 2021-10-07 op strlcpy(buf, lhs, buflen);
578 eb2ed626 2021-10-07 op return strlcat(buf, rhs, buflen);
582 eb2ed626 2021-10-07 op getenv_default(char *buf, const char *name, const char *def, size_t buflen)
585 eb2ed626 2021-10-07 op char *home, *env;
587 eb2ed626 2021-10-07 op if ((home = getenv("HOME")) == NULL)
588 eb2ed626 2021-10-07 op errx(1, "HOME is not defined");
590 eb2ed626 2021-10-07 op if ((env = getenv(name)) != NULL)
591 eb2ed626 2021-10-07 op ret = strlcpy(buf, env, buflen);
593 eb2ed626 2021-10-07 op ret = join_path(buf, home, def, buflen);
595 eb2ed626 2021-10-07 op if (ret >= buflen)
596 eb2ed626 2021-10-07 op errx(1, "buffer too small for %s", name);
600 eb2ed626 2021-10-07 op mkdirs(const char *path, mode_t mode)
602 444dad86 2021-10-07 op char copy[PATH_MAX+1], orig[PATH_MAX+1], *parent;
604 eb2ed626 2021-10-07 op strlcpy(copy, path, sizeof(copy));
605 444dad86 2021-10-07 op strlcpy(orig, path, sizeof(orig));
606 eb2ed626 2021-10-07 op parent = dirname(copy);
607 eb2ed626 2021-10-07 op if (!strcmp(parent, "/"))
609 eb2ed626 2021-10-07 op mkdirs(parent, mode);
611 444dad86 2021-10-07 op if (mkdir(orig, mode) != 0) {
612 eb2ed626 2021-10-07 op if (errno == EEXIST)
614 444dad86 2021-10-07 op err(1, "can't mkdir %s", orig);
619 6c8ddace 2022-01-03 op init_paths(void)
621 7e60a21a 2022-01-03 op char xdg_config_base[PATH_MAX];
622 7e60a21a 2022-01-03 op char xdg_data_base[PATH_MAX];
623 7e60a21a 2022-01-03 op char xdg_cache_base[PATH_MAX];
624 7e60a21a 2022-01-03 op char old_path[PATH_MAX];
626 7e60a21a 2022-01-03 op struct stat info;
628 eb2ed626 2021-10-07 op /* old path */
629 eb2ed626 2021-10-07 op if ((home = getenv("HOME")) == NULL)
630 eb2ed626 2021-10-07 op errx(1, "HOME is not defined");
631 eb2ed626 2021-10-07 op join_path(old_path, home, "/.telescope", sizeof(old_path));
633 eb2ed626 2021-10-07 op /* if ~/.telescope exists, use that instead of xdg dirs */
634 eb2ed626 2021-10-07 op if (stat(old_path, &info) == 0 && S_ISDIR(info.st_mode)) {
635 eb2ed626 2021-10-07 op join_path(config_path_base, home, "/.telescope",
636 eb2ed626 2021-10-07 op sizeof(config_path_base));
637 eb2ed626 2021-10-07 op join_path(data_path_base, home, "/.telescope",
638 eb2ed626 2021-10-07 op sizeof(data_path_base));
639 eb2ed626 2021-10-07 op join_path(cache_path_base, home, "/.telescope",
640 eb2ed626 2021-10-07 op sizeof(cache_path_base));
644 eb2ed626 2021-10-07 op /* xdg paths */
645 eb2ed626 2021-10-07 op getenv_default(xdg_config_base, "XDG_CONFIG_HOME", "/.config",
646 eb2ed626 2021-10-07 op sizeof(xdg_config_base));
647 eb2ed626 2021-10-07 op getenv_default(xdg_data_base, "XDG_DATA_HOME", "/.local/share",
648 eb2ed626 2021-10-07 op sizeof(xdg_data_base));
649 eb2ed626 2021-10-07 op getenv_default(xdg_cache_base, "XDG_CACHE_HOME", "/.cache",
650 eb2ed626 2021-10-07 op sizeof(xdg_cache_base));
652 eb2ed626 2021-10-07 op join_path(config_path_base, xdg_config_base, "/telescope",
653 eb2ed626 2021-10-07 op sizeof(config_path_base));
654 eb2ed626 2021-10-07 op join_path(data_path_base, xdg_data_base, "/telescope",
655 eb2ed626 2021-10-07 op sizeof(data_path_base));
656 eb2ed626 2021-10-07 op join_path(cache_path_base, xdg_cache_base, "/telescope",
657 eb2ed626 2021-10-07 op sizeof(cache_path_base));
659 eb2ed626 2021-10-07 op mkdirs(xdg_config_base, S_IRWXU);
660 eb2ed626 2021-10-07 op mkdirs(xdg_data_base, S_IRWXU);
661 eb2ed626 2021-10-07 op mkdirs(xdg_cache_base, S_IRWXU);
663 eb2ed626 2021-10-07 op mkdirs(config_path_base, S_IRWXU);
664 eb2ed626 2021-10-07 op mkdirs(data_path_base, S_IRWXU);
665 eb2ed626 2021-10-07 op mkdirs(cache_path_base, S_IRWXU);
669 eb2ed626 2021-10-07 op fs_init(void)
671 6c8ddace 2022-01-03 op init_paths();
673 eb2ed626 2021-10-07 op join_path(config_path, config_path_base, "/config",
674 eb2ed626 2021-10-07 op sizeof(config_path));
675 eb2ed626 2021-10-07 op join_path(lockfile_path, cache_path_base, "/lock",
676 eb2ed626 2021-10-07 op sizeof(lockfile_path));
677 eb2ed626 2021-10-07 op join_path(bookmark_file, data_path_base, "/bookmarks.gmi",
678 eb2ed626 2021-10-07 op sizeof(bookmark_file));
679 eb2ed626 2021-10-07 op join_path(known_hosts_file, data_path_base, "/known_hosts",
680 eb2ed626 2021-10-07 op sizeof(known_hosts_file));
681 eb2ed626 2021-10-07 op join_path(known_hosts_tmp, cache_path_base,
682 eb2ed626 2021-10-07 op "/known_hosts.tmp.XXXXXXXXXX", sizeof(known_hosts_tmp));
683 eb2ed626 2021-10-07 op join_path(session_file, cache_path_base, "/session",
684 eb2ed626 2021-10-07 op sizeof(session_file));
685 eb2ed626 2021-10-07 op join_path(crashed_file, cache_path_base, "/crashed",
686 eb2ed626 2021-10-07 op sizeof(crashed_file));
692 bb28f1c2 2021-12-30 op * Parse a line of the session file. The format is:
694 bb28f1c2 2021-12-30 op * URL [flags,...] [title]\n
697 bb28f1c2 2021-12-30 op parse_session_line(char *line, const char **title, uint32_t *flags)
699 bb28f1c2 2021-12-30 op char *s, *t, *ap;
703 bb28f1c2 2021-12-30 op if ((s = strchr(line, ' ')) == NULL)
708 bb28f1c2 2021-12-30 op if ((t = strchr(s, ' ')) != NULL) {
713 bb28f1c2 2021-12-30 op while ((ap = strsep(&s, ",")) != NULL) {
714 bb28f1c2 2021-12-30 op if (!strcmp(ap, "current"))
715 bb28f1c2 2021-12-30 op *flags |= TAB_CURRENT;
719 bb28f1c2 2021-12-30 op static inline void
720 bb28f1c2 2021-12-30 op sendtab(uint32_t flags, const char *uri, const char *title)
722 bb28f1c2 2021-12-30 op struct session_tab tab;
724 bb28f1c2 2021-12-30 op memset(&tab, 0, sizeof(tab));
725 bb28f1c2 2021-12-30 op tab.flags = flags;
727 bb28f1c2 2021-12-30 op if (strlcpy(tab.uri, uri, sizeof(tab.uri)) >= sizeof(tab.uri))
730 bb28f1c2 2021-12-30 op /* don't worry about cached title truncation */
731 bb28f1c2 2021-12-30 op if (title != NULL)
732 bb28f1c2 2021-12-30 op strlcpy(tab.title, title, sizeof(tab.title));
734 bb28f1c2 2021-12-30 op fs_send_ui(IMSG_SESSION_TAB, 0, -1, &tab, sizeof(tab));
737 1040cc7f 2021-01-02 op static inline void
738 1040cc7f 2021-01-02 op sendhist(const char *uri, int future)
740 1040cc7f 2021-01-02 op struct session_tab_hist sth;
742 1040cc7f 2021-01-02 op memset(&sth, 0, sizeof(sth));
743 1040cc7f 2021-01-02 op sth.future = future;
745 1040cc7f 2021-01-02 op if (strlcpy(sth.uri, uri, sizeof(sth.uri)) >= sizeof(sth.uri))
748 1040cc7f 2021-01-02 op fs_send_ui(IMSG_SESSION_TAB_HIST, 0, -1, &sth, sizeof(sth));
752 50f03682 2022-01-03 op load_last_session(void)
754 bb28f1c2 2021-12-30 op FILE *session;
755 bb28f1c2 2021-12-30 op uint32_t flags;
756 bb28f1c2 2021-12-30 op size_t linesize = 0;
757 bb28f1c2 2021-12-30 op ssize_t linelen;
758 bb28f1c2 2021-12-30 op int first_time = 0;
760 bb28f1c2 2021-12-30 op const char *title;
761 1040cc7f 2021-01-02 op char *nl, *s, *line = NULL;
763 bb28f1c2 2021-12-30 op if ((session = fopen(session_file, "r")) == NULL) {
764 bb28f1c2 2021-12-30 op /* first time? */
765 bb28f1c2 2021-12-30 op first_time = 1;
769 bb28f1c2 2021-12-30 op while ((linelen = getline(&line, &linesize, session)) != -1) {
770 bb28f1c2 2021-12-30 op if ((nl = strchr(line, '\n')) != NULL)
773 1040cc7f 2021-01-02 op if (*line == '<' || *line == '>') {
774 1040cc7f 2021-01-02 op future = *line == '>';
776 1040cc7f 2021-01-02 op if (*s != ' ')
778 1040cc7f 2021-01-02 op sendhist(++s, future);
780 1040cc7f 2021-01-02 op parse_session_line(line, &title, &flags);
781 1040cc7f 2021-01-02 op sendtab(flags, line, title);
785 bb28f1c2 2021-12-30 op fclose(session);
788 bb28f1c2 2021-12-30 op if (last_time_crashed())
789 bb28f1c2 2021-12-30 op sendtab(TAB_CURRENT, "about:crash", NULL);
792 bb28f1c2 2021-12-30 op fs_send_ui(IMSG_SESSION_END, 0, -1, &first_time, sizeof(first_time));
796 6cc5fcfe 2021-07-08 op fs_main(void)
798 6cc5fcfe 2021-07-08 op setproctitle("fs");
802 35e1f40a 2021-03-14 op event_init();
804 bc10f6a5 2021-07-12 op /* Setup pipe and event handler to the main process */
805 bc10f6a5 2021-07-12 op if ((iev_ui = malloc(sizeof(*iev_ui))) == NULL)
807 bc10f6a5 2021-07-12 op imsg_init(&iev_ui->ibuf, 3);
808 bc10f6a5 2021-07-12 op iev_ui->handler = handle_dispatch_imsg;
809 bc10f6a5 2021-07-12 op iev_ui->events = EV_READ;
810 bc10f6a5 2021-07-12 op event_set(&iev_ui->ev, iev_ui->ibuf.fd, iev_ui->events,
811 bc10f6a5 2021-07-12 op iev_ui->handler, iev_ui);
812 bc10f6a5 2021-07-12 op event_add(&iev_ui->ev, NULL);
814 35e1f40a 2021-03-14 op sandbox_fs_process();
816 35e1f40a 2021-03-14 op event_dispatch();
823 be97d6e6 2021-08-15 op * Check if the last time telescope crashed. The check is done by
824 be97d6e6 2021-08-15 op * looking at `crashed_file': if it exists then last time we crashed.
825 be97d6e6 2021-08-15 op * Then, while here, touch the file too. During IMSG_QUIT we'll
829 b6171794 2021-07-20 op last_time_crashed(void)
831 be97d6e6 2021-08-15 op int fd, crashed = 1;
833 2b409042 2021-09-15 op if (safe_mode)
836 be97d6e6 2021-08-15 op if (unlink(crashed_file) == -1 && errno == ENOENT)
839 be97d6e6 2021-08-15 op if ((fd = open(crashed_file, O_CREAT|O_WRONLY, 0600)) == -1)
840 be97d6e6 2021-08-15 op return crashed;
843 be97d6e6 2021-08-15 op return crashed;
847 d0fd368a 2021-07-15 op lock_session(void)
849 d0fd368a 2021-07-15 op struct flock lock;
852 d0fd368a 2021-07-15 op if ((fd = open(lockfile_path, O_WRONLY|O_CREAT, 0600)) == -1)
855 d0fd368a 2021-07-15 op lock.l_start = 0;
856 d0fd368a 2021-07-15 op lock.l_len = 0;
857 d0fd368a 2021-07-15 op lock.l_type = F_WRLCK;
858 d0fd368a 2021-07-15 op lock.l_whence = SEEK_SET;
860 d0fd368a 2021-07-15 op if (fcntl(fd, F_SETLK, &lock) == -1) {
868 6400962b 2022-01-03 op static inline int
869 c6d03cf5 2021-04-25 op parse_khost_line(char *line, char *tmp[3])
873 c6d03cf5 2021-04-25 op for (ap = tmp; ap < &tmp[3] &&
874 c6d03cf5 2021-04-25 op (*ap = strsep(&line, " \t\n")) != NULL;) {
875 c6d03cf5 2021-04-25 op if (**ap != '\0')
879 c6d03cf5 2021-04-25 op return ap == &tmp[3] && *line == '\0';
883 eb722b50 2022-01-03 op load_certs(void)
885 c6d03cf5 2021-04-25 op char *tmp[3], *line = NULL;
886 6cd6a9e1 2021-03-20 op const char *errstr;
887 ec1fa0b0 2021-04-25 op size_t lineno = 0, linesize = 0;
888 3a227e9a 2021-03-18 op ssize_t linelen;
890 eb722b50 2022-01-03 op struct tofu_entry e;
892 3a227e9a 2021-03-18 op if ((f = fopen(known_hosts_file, "r")) == NULL)
895 3a227e9a 2021-03-18 op while ((linelen = getline(&line, &linesize, f)) != -1) {
898 eb722b50 2022-01-03 op memset(&e, 0, sizeof(e));
899 eb722b50 2022-01-03 op if (parse_khost_line(line, tmp)) {
900 eb722b50 2022-01-03 op strlcpy(e.domain, tmp[0], sizeof(e.domain));
901 eb722b50 2022-01-03 op strlcpy(e.hash, tmp[1], sizeof(e.hash));
903 eb722b50 2022-01-03 op e.verified = strtonum(tmp[2], 0, 1, &errstr);
904 c6d03cf5 2021-04-25 op if (errstr != NULL)
905 c6d03cf5 2021-04-25 op errx(1, "%s:%zu verification for %s is %s: %s",
906 c6d03cf5 2021-04-25 op known_hosts_file, lineno,
907 eb722b50 2022-01-03 op e.domain, errstr, tmp[2]);
909 eb722b50 2022-01-03 op fs_send_ui(IMSG_TOFU, 0, -1, &e, sizeof(e));
911 ec1fa0b0 2021-04-25 op warnx("%s:%zu invalid entry",
912 ec1fa0b0 2021-04-25 op known_hosts_file, lineno);
