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"
40 9d65b1d9 2022-01-11 op #include "utils.h"
42 35e1f40a 2021-03-14 op static void die(void) __attribute__((__noreturn__));
43 fb4dc49f 2021-08-13 op static void send_file(uint32_t, FILE *);
44 35e1f40a 2021-03-14 op static void handle_get(struct imsg*, size_t);
45 5cbe1763 2021-08-13 op static int select_non_dot(const struct dirent *);
46 5cbe1763 2021-08-13 op static int select_non_dotdot(const struct dirent *);
47 fb4dc49f 2021-08-13 op static void handle_get_file(struct imsg*, size_t);
48 50f03682 2022-01-03 op static void handle_misc(struct imsg *, size_t);
49 740f578b 2021-03-15 op static void handle_bookmark_page(struct imsg*, size_t);
50 3a227e9a 2021-03-18 op static void handle_save_cert(struct imsg*, size_t);
51 288fd238 2021-04-25 op static void handle_update_cert(struct imsg*, size_t);
52 de2a69bb 2021-05-17 op static void handle_file_open(struct imsg*, size_t);
53 c7107cec 2021-04-01 op static void handle_session_start(struct imsg*, size_t);
54 c7107cec 2021-04-01 op static void handle_session_tab(struct imsg*, size_t);
55 1040cc7f 2021-01-02 op static void handle_session_tab_hist(struct imsg*, size_t);
56 c7107cec 2021-04-01 op static void handle_session_end(struct imsg*, size_t);
57 1304bbdd 2021-03-15 op static void handle_dispatch_imsg(int, short, void*);
58 bc10f6a5 2021-07-12 op static int fs_send_ui(int, uint32_t, int, const void *, uint16_t);
59 eb2ed626 2021-10-07 op static size_t join_path(char*, const char*, const char*, size_t);
60 eb2ed626 2021-10-07 op static void getenv_default(char*, const char*, const char*, size_t);
61 eb2ed626 2021-10-07 op static void mkdirs(const char*, mode_t);
62 6c8ddace 2022-01-03 op static void init_paths(void);
63 50f03682 2022-01-03 op static void load_last_session(void);
64 83ed72f1 2022-01-03 op static int last_time_crashed(void);
65 eb722b50 2022-01-03 op static void load_certs(void);
67 bc10f6a5 2021-07-12 op static struct imsgev *iev_ui;
68 c7107cec 2021-04-01 op static FILE *session;
71 f88fbabc 2021-11-27 op * Where to store user data. These are all equal to ~/.telescope if
74 fb3d08c1 2021-10-07 op char config_path_base[PATH_MAX];
75 fb3d08c1 2021-10-07 op char data_path_base[PATH_MAX];
76 fb3d08c1 2021-10-07 op char cache_path_base[PATH_MAX];
78 eb2ed626 2021-10-07 op char config_path[PATH_MAX];
79 fb3d08c1 2021-10-07 op char lockfile_path[PATH_MAX];
80 fb3d08c1 2021-10-07 op char bookmark_file[PATH_MAX];
81 fb3d08c1 2021-10-07 op char known_hosts_file[PATH_MAX], known_hosts_tmp[PATH_MAX];
82 fb3d08c1 2021-10-07 op char crashed_file[PATH_MAX];
83 fb3d08c1 2021-10-07 op char session_file[PATH_MAX];
85 35e1f40a 2021-03-14 op static imsg_handlerfn *handlers[] = {
86 35e1f40a 2021-03-14 op [IMSG_GET] = handle_get,
87 fb4dc49f 2021-08-13 op [IMSG_GET_FILE] = handle_get_file,
88 50f03682 2022-01-03 op [IMSG_QUIT] = handle_misc,
89 50f03682 2022-01-03 op [IMSG_INIT] = handle_misc,
90 740f578b 2021-03-15 op [IMSG_BOOKMARK_PAGE] = handle_bookmark_page,
91 3a227e9a 2021-03-18 op [IMSG_SAVE_CERT] = handle_save_cert,
92 288fd238 2021-04-25 op [IMSG_UPDATE_CERT] = handle_update_cert,
93 de2a69bb 2021-05-17 op [IMSG_FILE_OPEN] = handle_file_open,
94 c7107cec 2021-04-01 op [IMSG_SESSION_START] = handle_session_start,
95 c7107cec 2021-04-01 op [IMSG_SESSION_TAB] = handle_session_tab,
96 1040cc7f 2021-01-02 op [IMSG_SESSION_TAB_HIST] = handle_session_tab_hist,
97 c7107cec 2021-04-01 op [IMSG_SESSION_END] = handle_session_end,
100 35e1f40a 2021-03-14 op static void __attribute__((__noreturn__))
103 35e1f40a 2021-03-14 op abort(); /* TODO */
107 fb4dc49f 2021-08-13 op send_file(uint32_t peerid, FILE *f)
110 fb4dc49f 2021-08-13 op char buf[BUFSIZ];
113 fb4dc49f 2021-08-13 op r = fread(buf, 1, sizeof(buf), f);
115 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_BUF, peerid, -1, buf, r);
116 fb4dc49f 2021-08-13 op if (r != sizeof(buf))
119 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_EOF, peerid, -1, NULL, 0);
124 35e1f40a 2021-03-14 op handle_get(struct imsg *imsg, size_t datalen)
126 56e7efb4 2021-07-21 op const char *bpath = "bookmarks.gmi";
127 fb4dc49f 2021-08-13 op char path[PATH_MAX];
129 a2728733 2021-07-18 op const char *data, *p;
131 a2728733 2021-07-18 op struct page {
132 a2728733 2021-07-18 op const char *name;
133 56e7efb4 2021-07-21 op const char *path;
134 a2728733 2021-07-18 op const uint8_t *data;
136 a2728733 2021-07-18 op } pages[] = {
137 56e7efb4 2021-07-21 op {"about", NULL, about_about, about_about_len},
138 56e7efb4 2021-07-21 op {"blank", NULL, about_blank, about_blank_len},
139 56e7efb4 2021-07-21 op {"bookmarks", bpath, bookmarks, bookmarks_len},
140 56e7efb4 2021-07-21 op {"crash", NULL, about_crash, about_crash_len},
141 56e7efb4 2021-07-21 op {"help", NULL, about_help, about_help_len},
142 56e7efb4 2021-07-21 op {"license", NULL, about_license, about_license_len},
143 56e7efb4 2021-07-21 op {"new", NULL, about_new, about_new_len},
144 56e7efb4 2021-07-21 op }, *page = NULL;
146 35e1f40a 2021-03-14 op data = imsg->data;
147 56e7efb4 2021-07-21 op if (data[datalen-1] != '\0') /* make sure it's NUL-terminated */
149 56e7efb4 2021-07-21 op if ((data = strchr(data, ':')) == NULL)
150 56e7efb4 2021-07-21 op goto notfound;
153 56e7efb4 2021-07-21 op for (i = 0; i < sizeof(pages)/sizeof(pages[0]); ++i)
154 56e7efb4 2021-07-21 op if (!strcmp(data, pages[i].name)) {
155 56e7efb4 2021-07-21 op page = &pages[i];
159 56e7efb4 2021-07-21 op if (page == NULL)
160 56e7efb4 2021-07-21 op goto notfound;
162 de04b178 2021-11-26 op strlcpy(path, data_path_base, sizeof(path));
163 56e7efb4 2021-07-21 op strlcat(path, "/", sizeof(path));
164 56e7efb4 2021-07-21 op if (page->path != NULL)
165 56e7efb4 2021-07-21 op strlcat(path, page->path, sizeof(path));
167 56e7efb4 2021-07-21 op strlcat(path, "pages/about_", sizeof(path));
168 56e7efb4 2021-07-21 op strlcat(path, page->name, sizeof(path));
169 56e7efb4 2021-07-21 op strlcat(path, ".gmi", sizeof(path));
172 56e7efb4 2021-07-21 op if ((f = fopen(path, "r")) == NULL) {
173 56e7efb4 2021-07-21 op fs_send_ui(IMSG_BUF, imsg->hdr.peerid, -1,
174 56e7efb4 2021-07-21 op page->data, page->len);
175 56e7efb4 2021-07-21 op fs_send_ui(IMSG_EOF, imsg->hdr.peerid, -1,
180 fb4dc49f 2021-08-13 op send_file(imsg->hdr.peerid, f);
184 a2728733 2021-07-18 op p = "# not found!\n";
185 a2728733 2021-07-18 op fs_send_ui(IMSG_BUF, imsg->hdr.peerid, -1, p, strlen(p));
186 a2728733 2021-07-18 op fs_send_ui(IMSG_EOF, imsg->hdr.peerid, -1, NULL, 0);
189 fb4dc49f 2021-08-13 op static inline void
190 fb4dc49f 2021-08-13 op send_hdr(uint32_t peerid, int code, const char *meta)
192 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_GOT_CODE, peerid, -1, &code, sizeof(code));
193 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_GOT_META, peerid, -1, meta, strlen(meta)+1);
196 24a68158 2021-08-13 op static inline void
197 24a68158 2021-08-13 op send_errno(uint32_t peerid, int code, const char *str, int no)
201 24a68158 2021-08-13 op if (asprintf(&s, "%s: %s", str, strerror(no)) == -1)
204 24a68158 2021-08-13 op send_hdr(peerid, code, s == NULL ? str : s);
208 65124267 2021-08-13 op static inline const char *
209 65124267 2021-08-13 op file_type(const char *path)
211 fb4dc49f 2021-08-13 op struct mapping {
212 fb4dc49f 2021-08-13 op const char *ext;
213 fb4dc49f 2021-08-13 op const char *mime;
215 fb4dc49f 2021-08-13 op {"diff", "text/x-patch"},
216 fb4dc49f 2021-08-13 op {"gemini", "text/gemini"},
217 fb4dc49f 2021-08-13 op {"gmi", "text/gemini"},
218 fb4dc49f 2021-08-13 op {"markdown", "text/plain"},
219 fb4dc49f 2021-08-13 op {"md", "text/plain"},
220 fb4dc49f 2021-08-13 op {"patch", "text/x-patch"},
221 fb4dc49f 2021-08-13 op {"txt", "text/plain"},
222 fb4dc49f 2021-08-13 op {NULL, NULL},
226 65124267 2021-08-13 op if ((dot = strrchr(path, '.')) == NULL)
231 65124267 2021-08-13 op for (m = ms; m->ext != NULL; ++m)
232 65124267 2021-08-13 op if (!strcmp(m->ext, dot))
233 65124267 2021-08-13 op return m->mime;
239 5cbe1763 2021-08-13 op select_non_dot(const struct dirent *d)
241 5cbe1763 2021-08-13 op return strcmp(d->d_name, ".");
245 5cbe1763 2021-08-13 op select_non_dotdot(const struct dirent *d)
247 5cbe1763 2021-08-13 op return strcmp(d->d_name, ".") && strcmp(d->d_name, "..");
250 65124267 2021-08-13 op static inline void
251 65124267 2021-08-13 op send_dir(uint32_t peerid, const char *path)
253 65124267 2021-08-13 op struct dirent **names;
254 65124267 2021-08-13 op struct evbuffer *ev;
256 5cbe1763 2021-08-13 op int (*selector)(const struct dirent *) = select_non_dot;
257 24a68158 2021-08-13 op int i, len, no;
259 5d43215b 2021-08-13 op if (!has_suffix(path, "/")) {
260 5d43215b 2021-08-13 op if (asprintf(&s, "%s/", path) == -1)
262 5d43215b 2021-08-13 op send_hdr(peerid, 30, s);
267 5cbe1763 2021-08-13 op if (!strcmp(path, "/"))
268 5cbe1763 2021-08-13 op selector = select_non_dotdot;
270 65124267 2021-08-13 op if ((ev = evbuffer_new()) == NULL ||
271 5cbe1763 2021-08-13 op (len = scandir(path, &names, selector, alphasort)) == -1) {
273 65124267 2021-08-13 op evbuffer_free(ev);
274 24a68158 2021-08-13 op send_errno(peerid, 40, "failure reading the directory", no);
278 65124267 2021-08-13 op evbuffer_add_printf(ev, "# Index of %s\n\n", path);
279 65124267 2021-08-13 op for (i = 0; i < len; ++i) {
280 65124267 2021-08-13 op evbuffer_add_printf(ev, "=> %s", names[i]->d_name);
281 65124267 2021-08-13 op if (names[i]->d_type == DT_DIR)
282 65124267 2021-08-13 op evbuffer_add(ev, "/", 1);
283 65124267 2021-08-13 op evbuffer_add(ev, "\n", 1);
286 65124267 2021-08-13 op send_hdr(peerid, 20, "text/gemini");
287 65124267 2021-08-13 op fs_send_ui(IMSG_BUF, peerid, -1,
288 65124267 2021-08-13 op EVBUFFER_DATA(ev), EVBUFFER_LENGTH(ev));
289 65124267 2021-08-13 op fs_send_ui(IMSG_EOF, peerid, -1, NULL, 0);
291 65124267 2021-08-13 op evbuffer_free(ev);
296 65124267 2021-08-13 op handle_get_file(struct imsg *imsg, size_t datalen)
298 65124267 2021-08-13 op struct stat sb;
301 fb4dc49f 2021-08-13 op const char *meta = NULL;
303 fb4dc49f 2021-08-13 op data = imsg->data;
304 fb4dc49f 2021-08-13 op data[datalen-1] = '\0';
306 65124267 2021-08-13 op if ((f = fopen(data, "r")) == NULL) {
307 24a68158 2021-08-13 op send_errno(imsg->hdr.peerid, 51, "can't open", errno);
311 65124267 2021-08-13 op if (fstat(fileno(f), &sb) == -1) {
312 24a68158 2021-08-13 op send_errno(imsg->hdr.peerid, 40, "fstat", errno);
316 65124267 2021-08-13 op if (S_ISDIR(sb.st_mode)) {
318 65124267 2021-08-13 op send_dir(imsg->hdr.peerid, data);
322 65124267 2021-08-13 op if ((meta = file_type(data)) == NULL) {
324 65124267 2021-08-13 op send_hdr(imsg->hdr.peerid, 51,
325 65124267 2021-08-13 op "don't know how to visualize this file");
329 fb4dc49f 2021-08-13 op send_hdr(imsg->hdr.peerid, 20, meta);
330 fb4dc49f 2021-08-13 op send_file(imsg->hdr.peerid, f);
334 50f03682 2022-01-03 op handle_misc(struct imsg *imsg, size_t datalen)
336 50f03682 2022-01-03 op switch (imsg->hdr.type) {
337 50f03682 2022-01-03 op case IMSG_INIT:
338 eb722b50 2022-01-03 op load_certs();
339 50f03682 2022-01-03 op load_last_session();
342 50f03682 2022-01-03 op case IMSG_QUIT:
343 50f03682 2022-01-03 op if (!safe_mode)
344 50f03682 2022-01-03 op unlink(crashed_file);
345 50f03682 2022-01-03 op event_loopbreak();
354 740f578b 2021-03-15 op handle_bookmark_page(struct imsg *imsg, size_t datalen)
360 740f578b 2021-03-15 op data = imsg->data;
361 740f578b 2021-03-15 op if (data[datalen-1] != '\0')
364 740f578b 2021-03-15 op if ((f = fopen(bookmark_file, "a")) == NULL) {
368 740f578b 2021-03-15 op fprintf(f, "=> %s\n", data);
373 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_BOOKMARK_OK, 0, -1, &res, sizeof(res));
377 3a227e9a 2021-03-18 op handle_save_cert(struct imsg *imsg, size_t datalen)
379 3a227e9a 2021-03-18 op struct tofu_entry e;
383 3a227e9a 2021-03-18 op /* TODO: traverse the file to avoid duplications? */
385 3a227e9a 2021-03-18 op if (datalen != sizeof(e))
387 3a227e9a 2021-03-18 op memcpy(&e, imsg->data, datalen);
389 3a227e9a 2021-03-18 op if ((f = fopen(known_hosts_file, "a")) == NULL) {
393 3a227e9a 2021-03-18 op fprintf(f, "%s %s %d\n", e.domain, e.hash, e.verified);
398 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_SAVE_CERT_OK, imsg->hdr.peerid, -1,
399 288fd238 2021-04-25 op &res, sizeof(res));
403 288fd238 2021-04-25 op handle_update_cert(struct imsg *imsg, size_t datalen)
405 288fd238 2021-04-25 op FILE *tmp, *f;
406 288fd238 2021-04-25 op struct tofu_entry entry;
407 288fd238 2021-04-25 op char sfn[PATH_MAX], *line = NULL, *t;
408 288fd238 2021-04-25 op size_t l, linesize = 0;
409 288fd238 2021-04-25 op ssize_t linelen;
410 288fd238 2021-04-25 op int fd, e, res = 0;
412 288fd238 2021-04-25 op if (datalen != sizeof(entry))
414 288fd238 2021-04-25 op memcpy(&entry, imsg->data, datalen);
416 288fd238 2021-04-25 op strlcpy(sfn, known_hosts_tmp, sizeof(sfn));
417 288fd238 2021-04-25 op if ((fd = mkstemp(sfn)) == -1 ||
418 288fd238 2021-04-25 op (tmp = fdopen(fd, "w")) == NULL) {
419 288fd238 2021-04-25 op if (fd != -1) {
427 288fd238 2021-04-25 op if ((f = fopen(known_hosts_file, "r")) == NULL) {
434 288fd238 2021-04-25 op l = strlen(entry.domain);
435 288fd238 2021-04-25 op while ((linelen = getline(&line, &linesize, f)) != -1) {
436 288fd238 2021-04-25 op if ((t = strstr(line, entry.domain)) != NULL &&
437 288fd238 2021-04-25 op (line[l] == ' ' || line[l] == '\t'))
439 288fd238 2021-04-25 op /* line has a trailing \n */
440 288fd238 2021-04-25 op fprintf(tmp, "%s", line);
442 288fd238 2021-04-25 op fprintf(tmp, "%s %s %d\n", entry.domain, entry.hash, entry.verified);
445 288fd238 2021-04-25 op e = ferror(tmp);
456 288fd238 2021-04-25 op res = rename(sfn, known_hosts_file) != -1;
459 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_UPDATE_CERT_OK, imsg->hdr.peerid, -1,
460 3a227e9a 2021-03-18 op &res, sizeof(res));
464 de2a69bb 2021-05-17 op handle_file_open(struct imsg *imsg, size_t datalen)
466 de2a69bb 2021-05-17 op char *path, *e;
469 de2a69bb 2021-05-17 op path = imsg->data;
470 de2a69bb 2021-05-17 op if (path[datalen-1] != '\0')
473 de2a69bb 2021-05-17 op if ((fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, 0644)) == -1) {
474 de2a69bb 2021-05-17 op e = strerror(errno);
475 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_FILE_OPENED, imsg->hdr.peerid, -1,
476 de2a69bb 2021-05-17 op e, strlen(e)+1);
478 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_FILE_OPENED, imsg->hdr.peerid, fd,
483 c7107cec 2021-04-01 op handle_session_start(struct imsg *imsg, size_t datalen)
485 c7107cec 2021-04-01 op if (datalen != 0)
488 c7107cec 2021-04-01 op if ((session = fopen(session_file, "w")) == NULL)
493 c7107cec 2021-04-01 op handle_session_tab(struct imsg *imsg, size_t datalen)
495 f8c6e753 2021-12-30 op struct session_tab tab;
497 c7107cec 2021-04-01 op if (session == NULL)
500 f8c6e753 2021-12-30 op if (datalen != sizeof(tab))
503 f8c6e753 2021-12-30 op memcpy(&tab, imsg->data, sizeof(tab));
504 f8c6e753 2021-12-30 op if (tab.uri[sizeof(tab.uri)-1] != '\0' ||
505 f8c6e753 2021-12-30 op tab.title[sizeof(tab.title)-1] != '\0')
508 e795e935 2022-01-18 op fprintf(session, "%s ", tab.uri);
510 e795e935 2022-01-18 op if (tab.flags & TAB_CURRENT)
511 e795e935 2022-01-18 op fprintf(session, "current,");
512 e795e935 2022-01-18 op if (tab.flags & TAB_KILLED)
513 e795e935 2022-01-18 op fprintf(session, "killed,");
515 e795e935 2022-01-18 op fprintf(session, "top=%zu,cur=%zu %s\n", tab.top_line,
516 e795e935 2022-01-18 op tab.current_line, tab.title);
520 1040cc7f 2021-01-02 op handle_session_tab_hist(struct imsg *imsg, size_t datalen)
522 1040cc7f 2021-01-02 op struct session_tab_hist th;
524 1040cc7f 2021-01-02 op if (session == NULL)
527 1040cc7f 2021-01-02 op if (datalen != sizeof(th))
530 1040cc7f 2021-01-02 op memcpy(&th, imsg->data, sizeof(th));
531 1040cc7f 2021-01-02 op if (th.uri[sizeof(th.uri)-1] != '\0')
534 1040cc7f 2021-01-02 op fprintf(session, "%s %s\n", th.future ? ">" : "<", th.uri);
538 c7107cec 2021-04-01 op handle_session_end(struct imsg *imsg, size_t datalen)
540 c7107cec 2021-04-01 op if (session == NULL)
542 c7107cec 2021-04-01 op fclose(session);
543 c7107cec 2021-04-01 op session = NULL;
547 1304bbdd 2021-03-15 op handle_dispatch_imsg(int fd, short ev, void *d)
549 bc10f6a5 2021-07-12 op struct imsgev *iev = d;
552 ea080950 2021-07-20 op if (dispatch_imsg(iev, ev, handlers, sizeof(handlers)) == -1) {
554 eb2ed626 2021-10-07 op * This should leave a ~/.cache/telescope/crashed file to
555 ea080950 2021-07-20 op * trigger about:crash on next run. Unfortunately, if
556 ea080950 2021-07-20 op * the main process dies the fs sticks around and
557 ea080950 2021-07-20 op * doesn't notice that the fd was closed. Why EV_READ
558 ea080950 2021-07-20 op * is not triggered when a fd is closed on the other end?
561 ea080950 2021-07-20 op if ((fd = open(crashed_file, O_CREAT|O_TRUNC|O_WRONLY, 0600))
563 ea080950 2021-07-20 op err(1, "open");
565 ea080950 2021-07-20 op errx(1, "connection closed: %s", strerror(e));
570 bc10f6a5 2021-07-12 op fs_send_ui(int type, uint32_t peerid, int fd, const void *data,
571 bc10f6a5 2021-07-12 op uint16_t datalen)
573 bc10f6a5 2021-07-12 op return imsg_compose_event(iev_ui, type, peerid, 0, fd,
574 bc10f6a5 2021-07-12 op data, datalen);
577 eb2ed626 2021-10-07 op static size_t
578 eb2ed626 2021-10-07 op join_path(char *buf, const char *lhs, const char *rhs, size_t buflen)
580 eb2ed626 2021-10-07 op strlcpy(buf, lhs, buflen);
581 eb2ed626 2021-10-07 op return strlcat(buf, rhs, buflen);
585 eb2ed626 2021-10-07 op getenv_default(char *buf, const char *name, const char *def, size_t buflen)
588 eb2ed626 2021-10-07 op char *home, *env;
590 eb2ed626 2021-10-07 op if ((home = getenv("HOME")) == NULL)
591 eb2ed626 2021-10-07 op errx(1, "HOME is not defined");
593 eb2ed626 2021-10-07 op if ((env = getenv(name)) != NULL)
594 eb2ed626 2021-10-07 op ret = strlcpy(buf, env, buflen);
596 eb2ed626 2021-10-07 op ret = join_path(buf, home, def, buflen);
598 eb2ed626 2021-10-07 op if (ret >= buflen)
599 eb2ed626 2021-10-07 op errx(1, "buffer too small for %s", name);
603 eb2ed626 2021-10-07 op mkdirs(const char *path, mode_t mode)
605 444dad86 2021-10-07 op char copy[PATH_MAX+1], orig[PATH_MAX+1], *parent;
607 eb2ed626 2021-10-07 op strlcpy(copy, path, sizeof(copy));
608 444dad86 2021-10-07 op strlcpy(orig, path, sizeof(orig));
609 eb2ed626 2021-10-07 op parent = dirname(copy);
610 eb2ed626 2021-10-07 op if (!strcmp(parent, "/"))
612 eb2ed626 2021-10-07 op mkdirs(parent, mode);
614 444dad86 2021-10-07 op if (mkdir(orig, mode) != 0) {
615 eb2ed626 2021-10-07 op if (errno == EEXIST)
617 444dad86 2021-10-07 op err(1, "can't mkdir %s", orig);
622 6c8ddace 2022-01-03 op init_paths(void)
624 7e60a21a 2022-01-03 op char xdg_config_base[PATH_MAX];
625 7e60a21a 2022-01-03 op char xdg_data_base[PATH_MAX];
626 7e60a21a 2022-01-03 op char xdg_cache_base[PATH_MAX];
627 7e60a21a 2022-01-03 op char old_path[PATH_MAX];
629 7e60a21a 2022-01-03 op struct stat info;
631 eb2ed626 2021-10-07 op /* old path */
632 eb2ed626 2021-10-07 op if ((home = getenv("HOME")) == NULL)
633 eb2ed626 2021-10-07 op errx(1, "HOME is not defined");
634 eb2ed626 2021-10-07 op join_path(old_path, home, "/.telescope", sizeof(old_path));
636 eb2ed626 2021-10-07 op /* if ~/.telescope exists, use that instead of xdg dirs */
637 eb2ed626 2021-10-07 op if (stat(old_path, &info) == 0 && S_ISDIR(info.st_mode)) {
638 eb2ed626 2021-10-07 op join_path(config_path_base, home, "/.telescope",
639 eb2ed626 2021-10-07 op sizeof(config_path_base));
640 eb2ed626 2021-10-07 op join_path(data_path_base, home, "/.telescope",
641 eb2ed626 2021-10-07 op sizeof(data_path_base));
642 eb2ed626 2021-10-07 op join_path(cache_path_base, home, "/.telescope",
643 eb2ed626 2021-10-07 op sizeof(cache_path_base));
647 eb2ed626 2021-10-07 op /* xdg paths */
648 eb2ed626 2021-10-07 op getenv_default(xdg_config_base, "XDG_CONFIG_HOME", "/.config",
649 eb2ed626 2021-10-07 op sizeof(xdg_config_base));
650 eb2ed626 2021-10-07 op getenv_default(xdg_data_base, "XDG_DATA_HOME", "/.local/share",
651 eb2ed626 2021-10-07 op sizeof(xdg_data_base));
652 eb2ed626 2021-10-07 op getenv_default(xdg_cache_base, "XDG_CACHE_HOME", "/.cache",
653 eb2ed626 2021-10-07 op sizeof(xdg_cache_base));
655 eb2ed626 2021-10-07 op join_path(config_path_base, xdg_config_base, "/telescope",
656 eb2ed626 2021-10-07 op sizeof(config_path_base));
657 eb2ed626 2021-10-07 op join_path(data_path_base, xdg_data_base, "/telescope",
658 eb2ed626 2021-10-07 op sizeof(data_path_base));
659 eb2ed626 2021-10-07 op join_path(cache_path_base, xdg_cache_base, "/telescope",
660 eb2ed626 2021-10-07 op sizeof(cache_path_base));
662 eb2ed626 2021-10-07 op mkdirs(xdg_config_base, S_IRWXU);
663 eb2ed626 2021-10-07 op mkdirs(xdg_data_base, S_IRWXU);
664 eb2ed626 2021-10-07 op mkdirs(xdg_cache_base, S_IRWXU);
666 eb2ed626 2021-10-07 op mkdirs(config_path_base, S_IRWXU);
667 eb2ed626 2021-10-07 op mkdirs(data_path_base, S_IRWXU);
668 eb2ed626 2021-10-07 op mkdirs(cache_path_base, S_IRWXU);
672 eb2ed626 2021-10-07 op fs_init(void)
674 6c8ddace 2022-01-03 op init_paths();
676 eb2ed626 2021-10-07 op join_path(config_path, config_path_base, "/config",
677 eb2ed626 2021-10-07 op sizeof(config_path));
678 eb2ed626 2021-10-07 op join_path(lockfile_path, cache_path_base, "/lock",
679 eb2ed626 2021-10-07 op sizeof(lockfile_path));
680 eb2ed626 2021-10-07 op join_path(bookmark_file, data_path_base, "/bookmarks.gmi",
681 eb2ed626 2021-10-07 op sizeof(bookmark_file));
682 eb2ed626 2021-10-07 op join_path(known_hosts_file, data_path_base, "/known_hosts",
683 eb2ed626 2021-10-07 op sizeof(known_hosts_file));
684 eb2ed626 2021-10-07 op join_path(known_hosts_tmp, cache_path_base,
685 eb2ed626 2021-10-07 op "/known_hosts.tmp.XXXXXXXXXX", sizeof(known_hosts_tmp));
686 eb2ed626 2021-10-07 op join_path(session_file, cache_path_base, "/session",
687 eb2ed626 2021-10-07 op sizeof(session_file));
688 eb2ed626 2021-10-07 op join_path(crashed_file, cache_path_base, "/crashed",
689 eb2ed626 2021-10-07 op sizeof(crashed_file));
695 bb28f1c2 2021-12-30 op * Parse a line of the session file. The format is:
697 bb28f1c2 2021-12-30 op * URL [flags,...] [title]\n
700 8f1633da 2022-01-18 op parse_session_line(char *line)
702 8f1633da 2022-01-18 op struct session_tab tab;
703 bb28f1c2 2021-12-30 op char *s, *t, *ap;
705 8f1633da 2022-01-18 op memset(&tab, 0, sizeof(tab));
707 bb28f1c2 2021-12-30 op if ((s = strchr(line, ' ')) == NULL)
712 8f1633da 2022-01-18 op if (strlcpy(tab.uri, line, sizeof(tab.uri)) >= sizeof(tab.uri))
715 bb28f1c2 2021-12-30 op if ((t = strchr(s, ' ')) != NULL) {
718 8f1633da 2022-01-18 op /* don't worry about cached title truncation */
719 8f1633da 2022-01-18 op strlcpy(tab.title, t, sizeof(tab.title));
722 bb28f1c2 2021-12-30 op while ((ap = strsep(&s, ",")) != NULL) {
723 bb28f1c2 2021-12-30 op if (!strcmp(ap, "current"))
724 8f1633da 2022-01-18 op tab.flags |= TAB_CURRENT;
725 6c74799d 2022-01-05 op else if (!strcmp(ap, "killed"))
726 8f1633da 2022-01-18 op tab.flags |= TAB_KILLED;
727 e795e935 2022-01-18 op else if (has_prefix(ap, "top="))
728 4aaf5de0 2022-01-18 op tab.top_line = strtonum(ap+4, 0, UINT32_MAX, NULL);
729 e795e935 2022-01-18 op else if (has_prefix(ap, "cur="))
730 4aaf5de0 2022-01-18 op tab.current_line = strtonum(ap+4, 0, UINT32_MAX, NULL);
733 e795e935 2022-01-18 op if (tab.top_line > tab.current_line) {
734 e795e935 2022-01-18 op tab.top_line = 0;
735 e795e935 2022-01-18 op tab.current_line = 0;
738 bb28f1c2 2021-12-30 op fs_send_ui(IMSG_SESSION_TAB, 0, -1, &tab, sizeof(tab));
741 1040cc7f 2021-01-02 op static inline void
742 1040cc7f 2021-01-02 op sendhist(const char *uri, int future)
744 1040cc7f 2021-01-02 op struct session_tab_hist sth;
746 1040cc7f 2021-01-02 op memset(&sth, 0, sizeof(sth));
747 1040cc7f 2021-01-02 op sth.future = future;
749 1040cc7f 2021-01-02 op if (strlcpy(sth.uri, uri, sizeof(sth.uri)) >= sizeof(sth.uri))
752 1040cc7f 2021-01-02 op fs_send_ui(IMSG_SESSION_TAB_HIST, 0, -1, &sth, sizeof(sth));
756 50f03682 2022-01-03 op load_last_session(void)
758 bb28f1c2 2021-12-30 op FILE *session;
759 bb28f1c2 2021-12-30 op size_t linesize = 0;
760 bb28f1c2 2021-12-30 op ssize_t linelen;
761 bb28f1c2 2021-12-30 op int first_time = 0;
763 1040cc7f 2021-01-02 op char *nl, *s, *line = NULL;
765 bb28f1c2 2021-12-30 op if ((session = fopen(session_file, "r")) == NULL) {
766 bb28f1c2 2021-12-30 op /* first time? */
767 bb28f1c2 2021-12-30 op first_time = 1;
771 bb28f1c2 2021-12-30 op while ((linelen = getline(&line, &linesize, session)) != -1) {
772 bb28f1c2 2021-12-30 op if ((nl = strchr(line, '\n')) != NULL)
775 1040cc7f 2021-01-02 op if (*line == '<' || *line == '>') {
776 1040cc7f 2021-01-02 op future = *line == '>';
778 1040cc7f 2021-01-02 op if (*s != ' ')
780 1040cc7f 2021-01-02 op sendhist(++s, future);
782 8f1633da 2022-01-18 op parse_session_line(line);
786 bb28f1c2 2021-12-30 op fclose(session);
789 8f1633da 2022-01-18 op if (last_time_crashed()) {
790 8f1633da 2022-01-18 op struct session_tab tab;
791 8f1633da 2022-01-18 op memset(&tab, 0, sizeof(tab));
792 8f1633da 2022-01-18 op tab.flags = TAB_CURRENT;
793 8f1633da 2022-01-18 op strlcpy(tab.uri, "about:crash", sizeof(tab.uri));
794 8f1633da 2022-01-18 op fs_send_ui(IMSG_SESSION_TAB, 0, -1, &tab, sizeof(tab));
798 bb28f1c2 2021-12-30 op fs_send_ui(IMSG_SESSION_END, 0, -1, &first_time, sizeof(first_time));
802 6cc5fcfe 2021-07-08 op fs_main(void)
804 6cc5fcfe 2021-07-08 op setproctitle("fs");
808 35e1f40a 2021-03-14 op event_init();
810 bc10f6a5 2021-07-12 op /* Setup pipe and event handler to the main process */
811 bc10f6a5 2021-07-12 op if ((iev_ui = malloc(sizeof(*iev_ui))) == NULL)
813 bc10f6a5 2021-07-12 op imsg_init(&iev_ui->ibuf, 3);
814 bc10f6a5 2021-07-12 op iev_ui->handler = handle_dispatch_imsg;
815 bc10f6a5 2021-07-12 op iev_ui->events = EV_READ;
816 bc10f6a5 2021-07-12 op event_set(&iev_ui->ev, iev_ui->ibuf.fd, iev_ui->events,
817 bc10f6a5 2021-07-12 op iev_ui->handler, iev_ui);
818 bc10f6a5 2021-07-12 op event_add(&iev_ui->ev, NULL);
820 35e1f40a 2021-03-14 op sandbox_fs_process();
822 35e1f40a 2021-03-14 op event_dispatch();
827 be97d6e6 2021-08-15 op * Check if the last time telescope crashed. The check is done by
828 be97d6e6 2021-08-15 op * looking at `crashed_file': if it exists then last time we crashed.
829 be97d6e6 2021-08-15 op * Then, while here, touch the file too. During IMSG_QUIT we'll
833 b6171794 2021-07-20 op last_time_crashed(void)
835 be97d6e6 2021-08-15 op int fd, crashed = 1;
837 2b409042 2021-09-15 op if (safe_mode)
840 be97d6e6 2021-08-15 op if (unlink(crashed_file) == -1 && errno == ENOENT)
843 be97d6e6 2021-08-15 op if ((fd = open(crashed_file, O_CREAT|O_WRONLY, 0600)) == -1)
844 be97d6e6 2021-08-15 op return crashed;
847 be97d6e6 2021-08-15 op return crashed;
851 d0fd368a 2021-07-15 op lock_session(void)
853 d0fd368a 2021-07-15 op struct flock lock;
856 d0fd368a 2021-07-15 op if ((fd = open(lockfile_path, O_WRONLY|O_CREAT, 0600)) == -1)
859 d0fd368a 2021-07-15 op lock.l_start = 0;
860 d0fd368a 2021-07-15 op lock.l_len = 0;
861 d0fd368a 2021-07-15 op lock.l_type = F_WRLCK;
862 d0fd368a 2021-07-15 op lock.l_whence = SEEK_SET;
864 d0fd368a 2021-07-15 op if (fcntl(fd, F_SETLK, &lock) == -1) {
872 6400962b 2022-01-03 op static inline int
873 c6d03cf5 2021-04-25 op parse_khost_line(char *line, char *tmp[3])
877 c6d03cf5 2021-04-25 op for (ap = tmp; ap < &tmp[3] &&
878 c6d03cf5 2021-04-25 op (*ap = strsep(&line, " \t\n")) != NULL;) {
879 c6d03cf5 2021-04-25 op if (**ap != '\0')
883 c6d03cf5 2021-04-25 op return ap == &tmp[3] && *line == '\0';
887 eb722b50 2022-01-03 op load_certs(void)
889 c6d03cf5 2021-04-25 op char *tmp[3], *line = NULL;
890 6cd6a9e1 2021-03-20 op const char *errstr;
891 ec1fa0b0 2021-04-25 op size_t lineno = 0, linesize = 0;
892 3a227e9a 2021-03-18 op ssize_t linelen;
894 eb722b50 2022-01-03 op struct tofu_entry e;
896 3a227e9a 2021-03-18 op if ((f = fopen(known_hosts_file, "r")) == NULL)
899 3a227e9a 2021-03-18 op while ((linelen = getline(&line, &linesize, f)) != -1) {
902 eb722b50 2022-01-03 op memset(&e, 0, sizeof(e));
903 eb722b50 2022-01-03 op if (parse_khost_line(line, tmp)) {
904 eb722b50 2022-01-03 op strlcpy(e.domain, tmp[0], sizeof(e.domain));
905 eb722b50 2022-01-03 op strlcpy(e.hash, tmp[1], sizeof(e.hash));
907 eb722b50 2022-01-03 op e.verified = strtonum(tmp[2], 0, 1, &errstr);
908 c6d03cf5 2021-04-25 op if (errstr != NULL)
909 c6d03cf5 2021-04-25 op errx(1, "%s:%zu verification for %s is %s: %s",
910 c6d03cf5 2021-04-25 op known_hosts_file, lineno,
911 eb722b50 2022-01-03 op e.domain, errstr, tmp[2]);
913 eb722b50 2022-01-03 op fs_send_ui(IMSG_TOFU, 0, -1, &e, sizeof(e));
915 ec1fa0b0 2021-04-25 op warnx("%s:%zu invalid entry",
916 ec1fa0b0 2021-04-25 op known_hosts_file, lineno);