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 9e97090d 2022-02-26 op static void handle_hist(struct imsg *, size_t);
58 1304bbdd 2021-03-15 op static void handle_dispatch_imsg(int, short, void*);
59 bc10f6a5 2021-07-12 op static int fs_send_ui(int, uint32_t, int, const void *, uint16_t);
60 eb2ed626 2021-10-07 op static size_t join_path(char*, const char*, const char*, size_t);
61 eb2ed626 2021-10-07 op static void getenv_default(char*, const char*, const char*, size_t);
62 eb2ed626 2021-10-07 op static void mkdirs(const char*, mode_t);
63 6c8ddace 2022-01-03 op static void init_paths(void);
64 50f03682 2022-01-03 op static void load_last_session(void);
65 9e97090d 2022-02-26 op static void load_hist(void);
66 83ed72f1 2022-01-03 op static int last_time_crashed(void);
67 eb722b50 2022-01-03 op static void load_certs(void);
69 bc10f6a5 2021-07-12 op static struct imsgev *iev_ui;
70 c7107cec 2021-04-01 op static FILE *session;
73 f88fbabc 2021-11-27 op * Where to store user data. These are all equal to ~/.telescope if
76 fb3d08c1 2021-10-07 op char config_path_base[PATH_MAX];
77 fb3d08c1 2021-10-07 op char data_path_base[PATH_MAX];
78 fb3d08c1 2021-10-07 op char cache_path_base[PATH_MAX];
80 4cf6ba13 2022-02-11 op char ctlsock_path[PATH_MAX];
81 eb2ed626 2021-10-07 op char config_path[PATH_MAX];
82 fb3d08c1 2021-10-07 op char lockfile_path[PATH_MAX];
83 fb3d08c1 2021-10-07 op char bookmark_file[PATH_MAX];
84 fb3d08c1 2021-10-07 op char known_hosts_file[PATH_MAX], known_hosts_tmp[PATH_MAX];
85 fb3d08c1 2021-10-07 op char crashed_file[PATH_MAX];
86 fb3d08c1 2021-10-07 op char session_file[PATH_MAX];
87 9e97090d 2022-02-26 op static char history_file[PATH_MAX];
89 35e1f40a 2021-03-14 op static imsg_handlerfn *handlers[] = {
90 35e1f40a 2021-03-14 op [IMSG_GET] = handle_get,
91 fb4dc49f 2021-08-13 op [IMSG_GET_FILE] = handle_get_file,
92 50f03682 2022-01-03 op [IMSG_QUIT] = handle_misc,
93 50f03682 2022-01-03 op [IMSG_INIT] = handle_misc,
94 740f578b 2021-03-15 op [IMSG_BOOKMARK_PAGE] = handle_bookmark_page,
95 3a227e9a 2021-03-18 op [IMSG_SAVE_CERT] = handle_save_cert,
96 288fd238 2021-04-25 op [IMSG_UPDATE_CERT] = handle_update_cert,
97 de2a69bb 2021-05-17 op [IMSG_FILE_OPEN] = handle_file_open,
98 c7107cec 2021-04-01 op [IMSG_SESSION_START] = handle_session_start,
99 c7107cec 2021-04-01 op [IMSG_SESSION_TAB] = handle_session_tab,
100 1040cc7f 2021-01-02 op [IMSG_SESSION_TAB_HIST] = handle_session_tab_hist,
101 c7107cec 2021-04-01 op [IMSG_SESSION_END] = handle_session_end,
102 9e97090d 2022-02-26 op [IMSG_HIST_ITEM] = handle_hist,
103 9e97090d 2022-02-26 op [IMSG_HIST_END] = handle_hist,
106 35e1f40a 2021-03-14 op static void __attribute__((__noreturn__))
109 35e1f40a 2021-03-14 op abort(); /* TODO */
113 fb4dc49f 2021-08-13 op send_file(uint32_t peerid, FILE *f)
116 fb4dc49f 2021-08-13 op char buf[BUFSIZ];
119 fb4dc49f 2021-08-13 op r = fread(buf, 1, sizeof(buf), f);
121 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_BUF, peerid, -1, buf, r);
122 fb4dc49f 2021-08-13 op if (r != sizeof(buf))
125 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_EOF, peerid, -1, NULL, 0);
130 35e1f40a 2021-03-14 op handle_get(struct imsg *imsg, size_t datalen)
132 56e7efb4 2021-07-21 op const char *bpath = "bookmarks.gmi";
133 fb4dc49f 2021-08-13 op char path[PATH_MAX];
135 a2728733 2021-07-18 op const char *data, *p;
137 a2728733 2021-07-18 op struct page {
138 a2728733 2021-07-18 op const char *name;
139 56e7efb4 2021-07-21 op const char *path;
140 a2728733 2021-07-18 op const uint8_t *data;
142 a2728733 2021-07-18 op } pages[] = {
143 56e7efb4 2021-07-21 op {"about", NULL, about_about, about_about_len},
144 56e7efb4 2021-07-21 op {"blank", NULL, about_blank, about_blank_len},
145 56e7efb4 2021-07-21 op {"bookmarks", bpath, bookmarks, bookmarks_len},
146 56e7efb4 2021-07-21 op {"crash", NULL, about_crash, about_crash_len},
147 56e7efb4 2021-07-21 op {"help", NULL, about_help, about_help_len},
148 56e7efb4 2021-07-21 op {"license", NULL, about_license, about_license_len},
149 56e7efb4 2021-07-21 op {"new", NULL, about_new, about_new_len},
150 56e7efb4 2021-07-21 op }, *page = NULL;
152 35e1f40a 2021-03-14 op data = imsg->data;
153 56e7efb4 2021-07-21 op if (data[datalen-1] != '\0') /* make sure it's NUL-terminated */
155 56e7efb4 2021-07-21 op if ((data = strchr(data, ':')) == NULL)
156 56e7efb4 2021-07-21 op goto notfound;
159 56e7efb4 2021-07-21 op for (i = 0; i < sizeof(pages)/sizeof(pages[0]); ++i)
160 56e7efb4 2021-07-21 op if (!strcmp(data, pages[i].name)) {
161 56e7efb4 2021-07-21 op page = &pages[i];
165 56e7efb4 2021-07-21 op if (page == NULL)
166 56e7efb4 2021-07-21 op goto notfound;
168 de04b178 2021-11-26 op strlcpy(path, data_path_base, sizeof(path));
169 56e7efb4 2021-07-21 op strlcat(path, "/", sizeof(path));
170 56e7efb4 2021-07-21 op if (page->path != NULL)
171 56e7efb4 2021-07-21 op strlcat(path, page->path, sizeof(path));
173 56e7efb4 2021-07-21 op strlcat(path, "pages/about_", sizeof(path));
174 56e7efb4 2021-07-21 op strlcat(path, page->name, sizeof(path));
175 56e7efb4 2021-07-21 op strlcat(path, ".gmi", sizeof(path));
178 56e7efb4 2021-07-21 op if ((f = fopen(path, "r")) == NULL) {
179 56e7efb4 2021-07-21 op fs_send_ui(IMSG_BUF, imsg->hdr.peerid, -1,
180 56e7efb4 2021-07-21 op page->data, page->len);
181 56e7efb4 2021-07-21 op fs_send_ui(IMSG_EOF, imsg->hdr.peerid, -1,
186 fb4dc49f 2021-08-13 op send_file(imsg->hdr.peerid, f);
190 a2728733 2021-07-18 op p = "# not found!\n";
191 a2728733 2021-07-18 op fs_send_ui(IMSG_BUF, imsg->hdr.peerid, -1, p, strlen(p));
192 a2728733 2021-07-18 op fs_send_ui(IMSG_EOF, imsg->hdr.peerid, -1, NULL, 0);
195 fb4dc49f 2021-08-13 op static inline void
196 fb4dc49f 2021-08-13 op send_hdr(uint32_t peerid, int code, const char *meta)
198 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_GOT_CODE, peerid, -1, &code, sizeof(code));
199 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_GOT_META, peerid, -1, meta, strlen(meta)+1);
202 24a68158 2021-08-13 op static inline void
203 24a68158 2021-08-13 op send_errno(uint32_t peerid, int code, const char *str, int no)
207 24a68158 2021-08-13 op if (asprintf(&s, "%s: %s", str, strerror(no)) == -1)
210 24a68158 2021-08-13 op send_hdr(peerid, code, s == NULL ? str : s);
214 65124267 2021-08-13 op static inline const char *
215 65124267 2021-08-13 op file_type(const char *path)
217 fb4dc49f 2021-08-13 op struct mapping {
218 fb4dc49f 2021-08-13 op const char *ext;
219 fb4dc49f 2021-08-13 op const char *mime;
221 fb4dc49f 2021-08-13 op {"diff", "text/x-patch"},
222 fb4dc49f 2021-08-13 op {"gemini", "text/gemini"},
223 fb4dc49f 2021-08-13 op {"gmi", "text/gemini"},
224 fb4dc49f 2021-08-13 op {"markdown", "text/plain"},
225 fb4dc49f 2021-08-13 op {"md", "text/plain"},
226 fb4dc49f 2021-08-13 op {"patch", "text/x-patch"},
227 fb4dc49f 2021-08-13 op {"txt", "text/plain"},
228 fb4dc49f 2021-08-13 op {NULL, NULL},
232 65124267 2021-08-13 op if ((dot = strrchr(path, '.')) == NULL)
237 65124267 2021-08-13 op for (m = ms; m->ext != NULL; ++m)
238 65124267 2021-08-13 op if (!strcmp(m->ext, dot))
239 65124267 2021-08-13 op return m->mime;
245 5cbe1763 2021-08-13 op select_non_dot(const struct dirent *d)
247 5cbe1763 2021-08-13 op return strcmp(d->d_name, ".");
251 5cbe1763 2021-08-13 op select_non_dotdot(const struct dirent *d)
253 5cbe1763 2021-08-13 op return strcmp(d->d_name, ".") && strcmp(d->d_name, "..");
256 65124267 2021-08-13 op static inline void
257 65124267 2021-08-13 op send_dir(uint32_t peerid, const char *path)
259 65124267 2021-08-13 op struct dirent **names;
260 65124267 2021-08-13 op struct evbuffer *ev;
262 5cbe1763 2021-08-13 op int (*selector)(const struct dirent *) = select_non_dot;
263 24a68158 2021-08-13 op int i, len, no;
265 5d43215b 2021-08-13 op if (!has_suffix(path, "/")) {
266 5d43215b 2021-08-13 op if (asprintf(&s, "%s/", path) == -1)
268 5d43215b 2021-08-13 op send_hdr(peerid, 30, s);
273 5cbe1763 2021-08-13 op if (!strcmp(path, "/"))
274 5cbe1763 2021-08-13 op selector = select_non_dotdot;
276 65124267 2021-08-13 op if ((ev = evbuffer_new()) == NULL ||
277 5cbe1763 2021-08-13 op (len = scandir(path, &names, selector, alphasort)) == -1) {
279 65124267 2021-08-13 op evbuffer_free(ev);
280 24a68158 2021-08-13 op send_errno(peerid, 40, "failure reading the directory", no);
284 65124267 2021-08-13 op evbuffer_add_printf(ev, "# Index of %s\n\n", path);
285 65124267 2021-08-13 op for (i = 0; i < len; ++i) {
286 65124267 2021-08-13 op evbuffer_add_printf(ev, "=> %s", names[i]->d_name);
287 65124267 2021-08-13 op if (names[i]->d_type == DT_DIR)
288 65124267 2021-08-13 op evbuffer_add(ev, "/", 1);
289 65124267 2021-08-13 op evbuffer_add(ev, "\n", 1);
292 65124267 2021-08-13 op send_hdr(peerid, 20, "text/gemini");
293 65124267 2021-08-13 op fs_send_ui(IMSG_BUF, peerid, -1,
294 65124267 2021-08-13 op EVBUFFER_DATA(ev), EVBUFFER_LENGTH(ev));
295 65124267 2021-08-13 op fs_send_ui(IMSG_EOF, peerid, -1, NULL, 0);
297 65124267 2021-08-13 op evbuffer_free(ev);
302 65124267 2021-08-13 op handle_get_file(struct imsg *imsg, size_t datalen)
304 65124267 2021-08-13 op struct stat sb;
307 fb4dc49f 2021-08-13 op const char *meta = NULL;
309 fb4dc49f 2021-08-13 op data = imsg->data;
310 fb4dc49f 2021-08-13 op data[datalen-1] = '\0';
312 65124267 2021-08-13 op if ((f = fopen(data, "r")) == NULL) {
313 24a68158 2021-08-13 op send_errno(imsg->hdr.peerid, 51, "can't open", errno);
317 65124267 2021-08-13 op if (fstat(fileno(f), &sb) == -1) {
318 24a68158 2021-08-13 op send_errno(imsg->hdr.peerid, 40, "fstat", errno);
322 65124267 2021-08-13 op if (S_ISDIR(sb.st_mode)) {
324 65124267 2021-08-13 op send_dir(imsg->hdr.peerid, data);
328 65124267 2021-08-13 op if ((meta = file_type(data)) == NULL) {
330 65124267 2021-08-13 op send_hdr(imsg->hdr.peerid, 51,
331 65124267 2021-08-13 op "don't know how to visualize this file");
335 fb4dc49f 2021-08-13 op send_hdr(imsg->hdr.peerid, 20, meta);
336 fb4dc49f 2021-08-13 op send_file(imsg->hdr.peerid, f);
340 50f03682 2022-01-03 op handle_misc(struct imsg *imsg, size_t datalen)
342 50f03682 2022-01-03 op switch (imsg->hdr.type) {
343 50f03682 2022-01-03 op case IMSG_INIT:
344 eb722b50 2022-01-03 op load_certs();
346 50f03682 2022-01-03 op load_last_session();
349 50f03682 2022-01-03 op case IMSG_QUIT:
350 50f03682 2022-01-03 op if (!safe_mode)
351 50f03682 2022-01-03 op unlink(crashed_file);
352 50f03682 2022-01-03 op event_loopbreak();
361 740f578b 2021-03-15 op handle_bookmark_page(struct imsg *imsg, size_t datalen)
367 740f578b 2021-03-15 op data = imsg->data;
368 740f578b 2021-03-15 op if (data[datalen-1] != '\0')
371 740f578b 2021-03-15 op if ((f = fopen(bookmark_file, "a")) == NULL) {
375 740f578b 2021-03-15 op fprintf(f, "=> %s\n", data);
380 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_BOOKMARK_OK, 0, -1, &res, sizeof(res));
384 3a227e9a 2021-03-18 op handle_save_cert(struct imsg *imsg, size_t datalen)
386 3a227e9a 2021-03-18 op struct tofu_entry e;
390 3a227e9a 2021-03-18 op /* TODO: traverse the file to avoid duplications? */
392 3a227e9a 2021-03-18 op if (datalen != sizeof(e))
394 3a227e9a 2021-03-18 op memcpy(&e, imsg->data, datalen);
396 3a227e9a 2021-03-18 op if ((f = fopen(known_hosts_file, "a")) == NULL) {
400 3a227e9a 2021-03-18 op fprintf(f, "%s %s %d\n", e.domain, e.hash, e.verified);
405 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_SAVE_CERT_OK, imsg->hdr.peerid, -1,
406 288fd238 2021-04-25 op &res, sizeof(res));
410 288fd238 2021-04-25 op handle_update_cert(struct imsg *imsg, size_t datalen)
412 288fd238 2021-04-25 op FILE *tmp, *f;
413 288fd238 2021-04-25 op struct tofu_entry entry;
414 288fd238 2021-04-25 op char sfn[PATH_MAX], *line = NULL, *t;
415 288fd238 2021-04-25 op size_t l, linesize = 0;
416 288fd238 2021-04-25 op ssize_t linelen;
417 288fd238 2021-04-25 op int fd, e, res = 0;
419 288fd238 2021-04-25 op if (datalen != sizeof(entry))
421 288fd238 2021-04-25 op memcpy(&entry, imsg->data, datalen);
423 288fd238 2021-04-25 op strlcpy(sfn, known_hosts_tmp, sizeof(sfn));
424 288fd238 2021-04-25 op if ((fd = mkstemp(sfn)) == -1 ||
425 288fd238 2021-04-25 op (tmp = fdopen(fd, "w")) == NULL) {
426 288fd238 2021-04-25 op if (fd != -1) {
434 288fd238 2021-04-25 op if ((f = fopen(known_hosts_file, "r")) == NULL) {
441 288fd238 2021-04-25 op l = strlen(entry.domain);
442 288fd238 2021-04-25 op while ((linelen = getline(&line, &linesize, f)) != -1) {
443 288fd238 2021-04-25 op if ((t = strstr(line, entry.domain)) != NULL &&
444 288fd238 2021-04-25 op (line[l] == ' ' || line[l] == '\t'))
446 288fd238 2021-04-25 op /* line has a trailing \n */
447 288fd238 2021-04-25 op fprintf(tmp, "%s", line);
449 288fd238 2021-04-25 op fprintf(tmp, "%s %s %d\n", entry.domain, entry.hash, entry.verified);
452 288fd238 2021-04-25 op e = ferror(tmp);
463 288fd238 2021-04-25 op res = rename(sfn, known_hosts_file) != -1;
466 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_UPDATE_CERT_OK, imsg->hdr.peerid, -1,
467 3a227e9a 2021-03-18 op &res, sizeof(res));
471 de2a69bb 2021-05-17 op handle_file_open(struct imsg *imsg, size_t datalen)
473 de2a69bb 2021-05-17 op char *path, *e;
476 de2a69bb 2021-05-17 op path = imsg->data;
477 de2a69bb 2021-05-17 op if (path[datalen-1] != '\0')
480 de2a69bb 2021-05-17 op if ((fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, 0644)) == -1) {
481 de2a69bb 2021-05-17 op e = strerror(errno);
482 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_FILE_OPENED, imsg->hdr.peerid, -1,
483 de2a69bb 2021-05-17 op e, strlen(e)+1);
485 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_FILE_OPENED, imsg->hdr.peerid, fd,
490 c7107cec 2021-04-01 op handle_session_start(struct imsg *imsg, size_t datalen)
492 c7107cec 2021-04-01 op if (datalen != 0)
495 c7107cec 2021-04-01 op if ((session = fopen(session_file, "w")) == NULL)
500 c7107cec 2021-04-01 op handle_session_tab(struct imsg *imsg, size_t datalen)
502 f8c6e753 2021-12-30 op struct session_tab tab;
504 c7107cec 2021-04-01 op if (session == NULL)
507 f8c6e753 2021-12-30 op if (datalen != sizeof(tab))
510 f8c6e753 2021-12-30 op memcpy(&tab, imsg->data, sizeof(tab));
511 f8c6e753 2021-12-30 op if (tab.uri[sizeof(tab.uri)-1] != '\0' ||
512 f8c6e753 2021-12-30 op tab.title[sizeof(tab.title)-1] != '\0')
515 e795e935 2022-01-18 op fprintf(session, "%s ", tab.uri);
517 e795e935 2022-01-18 op if (tab.flags & TAB_CURRENT)
518 e795e935 2022-01-18 op fprintf(session, "current,");
519 e795e935 2022-01-18 op if (tab.flags & TAB_KILLED)
520 e795e935 2022-01-18 op fprintf(session, "killed,");
522 e795e935 2022-01-18 op fprintf(session, "top=%zu,cur=%zu %s\n", tab.top_line,
523 e795e935 2022-01-18 op tab.current_line, tab.title);
527 1040cc7f 2021-01-02 op handle_session_tab_hist(struct imsg *imsg, size_t datalen)
529 1040cc7f 2021-01-02 op struct session_tab_hist th;
531 1040cc7f 2021-01-02 op if (session == NULL)
534 1040cc7f 2021-01-02 op if (datalen != sizeof(th))
537 1040cc7f 2021-01-02 op memcpy(&th, imsg->data, sizeof(th));
538 1040cc7f 2021-01-02 op if (th.uri[sizeof(th.uri)-1] != '\0')
541 1040cc7f 2021-01-02 op fprintf(session, "%s %s\n", th.future ? ">" : "<", th.uri);
545 c7107cec 2021-04-01 op handle_session_end(struct imsg *imsg, size_t datalen)
547 c7107cec 2021-04-01 op if (session == NULL)
549 c7107cec 2021-04-01 op fclose(session);
550 c7107cec 2021-04-01 op session = NULL;
554 9e97090d 2022-02-26 op handle_hist(struct imsg *imsg, size_t datalen)
556 9e97090d 2022-02-26 op static FILE *hist;
557 9e97090d 2022-02-26 op struct histitem hi;
559 9e97090d 2022-02-26 op switch (imsg->hdr.type) {
560 9e97090d 2022-02-26 op case IMSG_HIST_ITEM:
561 9e97090d 2022-02-26 op if (hist == NULL) {
562 9e97090d 2022-02-26 op if ((hist = fopen(history_file, "a")) == NULL)
565 9e97090d 2022-02-26 op if (datalen != sizeof(hi))
567 9e97090d 2022-02-26 op memcpy(&hi, imsg->data, sizeof(hi));
568 9e97090d 2022-02-26 op fprintf(hist, "%lld %s\n", (long long)hi.ts, hi.uri);
571 9e97090d 2022-02-26 op case IMSG_HIST_END:
572 9e97090d 2022-02-26 op if (hist == NULL)
574 9e97090d 2022-02-26 op fclose(hist);
584 1304bbdd 2021-03-15 op handle_dispatch_imsg(int fd, short ev, void *d)
586 bc10f6a5 2021-07-12 op struct imsgev *iev = d;
589 ea080950 2021-07-20 op if (dispatch_imsg(iev, ev, handlers, sizeof(handlers)) == -1) {
591 eb2ed626 2021-10-07 op * This should leave a ~/.cache/telescope/crashed file to
592 ea080950 2021-07-20 op * trigger about:crash on next run. Unfortunately, if
593 ea080950 2021-07-20 op * the main process dies the fs sticks around and
594 ea080950 2021-07-20 op * doesn't notice that the fd was closed. Why EV_READ
595 ea080950 2021-07-20 op * is not triggered when a fd is closed on the other end?
598 ea080950 2021-07-20 op if ((fd = open(crashed_file, O_CREAT|O_TRUNC|O_WRONLY, 0600))
600 ea080950 2021-07-20 op err(1, "open");
602 ea080950 2021-07-20 op errx(1, "connection closed: %s", strerror(e));
607 bc10f6a5 2021-07-12 op fs_send_ui(int type, uint32_t peerid, int fd, const void *data,
608 bc10f6a5 2021-07-12 op uint16_t datalen)
610 bc10f6a5 2021-07-12 op return imsg_compose_event(iev_ui, type, peerid, 0, fd,
611 bc10f6a5 2021-07-12 op data, datalen);
614 eb2ed626 2021-10-07 op static size_t
615 eb2ed626 2021-10-07 op join_path(char *buf, const char *lhs, const char *rhs, size_t buflen)
617 eb2ed626 2021-10-07 op strlcpy(buf, lhs, buflen);
618 eb2ed626 2021-10-07 op return strlcat(buf, rhs, buflen);
622 eb2ed626 2021-10-07 op getenv_default(char *buf, const char *name, const char *def, size_t buflen)
625 eb2ed626 2021-10-07 op char *home, *env;
627 eb2ed626 2021-10-07 op if ((home = getenv("HOME")) == NULL)
628 eb2ed626 2021-10-07 op errx(1, "HOME is not defined");
630 eb2ed626 2021-10-07 op if ((env = getenv(name)) != NULL)
631 eb2ed626 2021-10-07 op ret = strlcpy(buf, env, buflen);
633 eb2ed626 2021-10-07 op ret = join_path(buf, home, def, buflen);
635 eb2ed626 2021-10-07 op if (ret >= buflen)
636 eb2ed626 2021-10-07 op errx(1, "buffer too small for %s", name);
640 eb2ed626 2021-10-07 op mkdirs(const char *path, mode_t mode)
642 444dad86 2021-10-07 op char copy[PATH_MAX+1], orig[PATH_MAX+1], *parent;
644 eb2ed626 2021-10-07 op strlcpy(copy, path, sizeof(copy));
645 444dad86 2021-10-07 op strlcpy(orig, path, sizeof(orig));
646 eb2ed626 2021-10-07 op parent = dirname(copy);
647 eb2ed626 2021-10-07 op if (!strcmp(parent, "/"))
649 eb2ed626 2021-10-07 op mkdirs(parent, mode);
651 444dad86 2021-10-07 op if (mkdir(orig, mode) != 0) {
652 eb2ed626 2021-10-07 op if (errno == EEXIST)
654 444dad86 2021-10-07 op err(1, "can't mkdir %s", orig);
659 6c8ddace 2022-01-03 op init_paths(void)
661 7e60a21a 2022-01-03 op char xdg_config_base[PATH_MAX];
662 7e60a21a 2022-01-03 op char xdg_data_base[PATH_MAX];
663 7e60a21a 2022-01-03 op char xdg_cache_base[PATH_MAX];
664 7e60a21a 2022-01-03 op char old_path[PATH_MAX];
666 7e60a21a 2022-01-03 op struct stat info;
668 eb2ed626 2021-10-07 op /* old path */
669 eb2ed626 2021-10-07 op if ((home = getenv("HOME")) == NULL)
670 eb2ed626 2021-10-07 op errx(1, "HOME is not defined");
671 eb2ed626 2021-10-07 op join_path(old_path, home, "/.telescope", sizeof(old_path));
673 eb2ed626 2021-10-07 op /* if ~/.telescope exists, use that instead of xdg dirs */
674 eb2ed626 2021-10-07 op if (stat(old_path, &info) == 0 && S_ISDIR(info.st_mode)) {
675 eb2ed626 2021-10-07 op join_path(config_path_base, home, "/.telescope",
676 eb2ed626 2021-10-07 op sizeof(config_path_base));
677 eb2ed626 2021-10-07 op join_path(data_path_base, home, "/.telescope",
678 eb2ed626 2021-10-07 op sizeof(data_path_base));
679 eb2ed626 2021-10-07 op join_path(cache_path_base, home, "/.telescope",
680 eb2ed626 2021-10-07 op sizeof(cache_path_base));
684 eb2ed626 2021-10-07 op /* xdg paths */
685 eb2ed626 2021-10-07 op getenv_default(xdg_config_base, "XDG_CONFIG_HOME", "/.config",
686 eb2ed626 2021-10-07 op sizeof(xdg_config_base));
687 eb2ed626 2021-10-07 op getenv_default(xdg_data_base, "XDG_DATA_HOME", "/.local/share",
688 eb2ed626 2021-10-07 op sizeof(xdg_data_base));
689 eb2ed626 2021-10-07 op getenv_default(xdg_cache_base, "XDG_CACHE_HOME", "/.cache",
690 eb2ed626 2021-10-07 op sizeof(xdg_cache_base));
692 eb2ed626 2021-10-07 op join_path(config_path_base, xdg_config_base, "/telescope",
693 eb2ed626 2021-10-07 op sizeof(config_path_base));
694 eb2ed626 2021-10-07 op join_path(data_path_base, xdg_data_base, "/telescope",
695 eb2ed626 2021-10-07 op sizeof(data_path_base));
696 eb2ed626 2021-10-07 op join_path(cache_path_base, xdg_cache_base, "/telescope",
697 eb2ed626 2021-10-07 op sizeof(cache_path_base));
699 eb2ed626 2021-10-07 op mkdirs(xdg_config_base, S_IRWXU);
700 eb2ed626 2021-10-07 op mkdirs(xdg_data_base, S_IRWXU);
701 eb2ed626 2021-10-07 op mkdirs(xdg_cache_base, S_IRWXU);
703 eb2ed626 2021-10-07 op mkdirs(config_path_base, S_IRWXU);
704 eb2ed626 2021-10-07 op mkdirs(data_path_base, S_IRWXU);
705 eb2ed626 2021-10-07 op mkdirs(cache_path_base, S_IRWXU);
709 eb2ed626 2021-10-07 op fs_init(void)
711 6c8ddace 2022-01-03 op init_paths();
713 4cf6ba13 2022-02-11 op join_path(ctlsock_path, cache_path_base, "/ctl",
714 4cf6ba13 2022-02-11 op sizeof(ctlsock_path));
715 eb2ed626 2021-10-07 op join_path(config_path, config_path_base, "/config",
716 eb2ed626 2021-10-07 op sizeof(config_path));
717 eb2ed626 2021-10-07 op join_path(lockfile_path, cache_path_base, "/lock",
718 eb2ed626 2021-10-07 op sizeof(lockfile_path));
719 eb2ed626 2021-10-07 op join_path(bookmark_file, data_path_base, "/bookmarks.gmi",
720 eb2ed626 2021-10-07 op sizeof(bookmark_file));
721 eb2ed626 2021-10-07 op join_path(known_hosts_file, data_path_base, "/known_hosts",
722 eb2ed626 2021-10-07 op sizeof(known_hosts_file));
723 eb2ed626 2021-10-07 op join_path(known_hosts_tmp, cache_path_base,
724 eb2ed626 2021-10-07 op "/known_hosts.tmp.XXXXXXXXXX", sizeof(known_hosts_tmp));
725 eb2ed626 2021-10-07 op join_path(session_file, cache_path_base, "/session",
726 eb2ed626 2021-10-07 op sizeof(session_file));
727 9e97090d 2022-02-26 op join_path(history_file, cache_path_base, "/history",
728 9e97090d 2022-02-26 op sizeof(history_file));
729 eb2ed626 2021-10-07 op join_path(crashed_file, cache_path_base, "/crashed",
730 eb2ed626 2021-10-07 op sizeof(crashed_file));
736 bb28f1c2 2021-12-30 op * Parse a line of the session file. The format is:
738 bb28f1c2 2021-12-30 op * URL [flags,...] [title]\n
741 8f1633da 2022-01-18 op parse_session_line(char *line)
743 8f1633da 2022-01-18 op struct session_tab tab;
744 bb28f1c2 2021-12-30 op char *s, *t, *ap;
746 8f1633da 2022-01-18 op memset(&tab, 0, sizeof(tab));
748 bb28f1c2 2021-12-30 op if ((s = strchr(line, ' ')) == NULL)
753 8f1633da 2022-01-18 op if (strlcpy(tab.uri, line, sizeof(tab.uri)) >= sizeof(tab.uri))
756 bb28f1c2 2021-12-30 op if ((t = strchr(s, ' ')) != NULL) {
759 8f1633da 2022-01-18 op /* don't worry about cached title truncation */
760 8f1633da 2022-01-18 op strlcpy(tab.title, t, sizeof(tab.title));
763 bb28f1c2 2021-12-30 op while ((ap = strsep(&s, ",")) != NULL) {
764 bb28f1c2 2021-12-30 op if (!strcmp(ap, "current"))
765 8f1633da 2022-01-18 op tab.flags |= TAB_CURRENT;
766 6c74799d 2022-01-05 op else if (!strcmp(ap, "killed"))
767 8f1633da 2022-01-18 op tab.flags |= TAB_KILLED;
768 e795e935 2022-01-18 op else if (has_prefix(ap, "top="))
769 4aaf5de0 2022-01-18 op tab.top_line = strtonum(ap+4, 0, UINT32_MAX, NULL);
770 e795e935 2022-01-18 op else if (has_prefix(ap, "cur="))
771 4aaf5de0 2022-01-18 op tab.current_line = strtonum(ap+4, 0, UINT32_MAX, NULL);
774 e795e935 2022-01-18 op if (tab.top_line > tab.current_line) {
775 e795e935 2022-01-18 op tab.top_line = 0;
776 e795e935 2022-01-18 op tab.current_line = 0;
779 bb28f1c2 2021-12-30 op fs_send_ui(IMSG_SESSION_TAB, 0, -1, &tab, sizeof(tab));
782 1040cc7f 2021-01-02 op static inline void
783 1040cc7f 2021-01-02 op sendhist(const char *uri, int future)
785 1040cc7f 2021-01-02 op struct session_tab_hist sth;
787 1040cc7f 2021-01-02 op memset(&sth, 0, sizeof(sth));
788 1040cc7f 2021-01-02 op sth.future = future;
790 1040cc7f 2021-01-02 op if (strlcpy(sth.uri, uri, sizeof(sth.uri)) >= sizeof(sth.uri))
793 1040cc7f 2021-01-02 op fs_send_ui(IMSG_SESSION_TAB_HIST, 0, -1, &sth, sizeof(sth));
797 50f03682 2022-01-03 op load_last_session(void)
799 bb28f1c2 2021-12-30 op FILE *session;
800 bb28f1c2 2021-12-30 op size_t linesize = 0;
801 bb28f1c2 2021-12-30 op ssize_t linelen;
802 bb28f1c2 2021-12-30 op int first_time = 0;
804 1040cc7f 2021-01-02 op char *nl, *s, *line = NULL;
806 bb28f1c2 2021-12-30 op if ((session = fopen(session_file, "r")) == NULL) {
807 bb28f1c2 2021-12-30 op /* first time? */
808 bb28f1c2 2021-12-30 op first_time = 1;
812 bb28f1c2 2021-12-30 op while ((linelen = getline(&line, &linesize, session)) != -1) {
813 bb28f1c2 2021-12-30 op if ((nl = strchr(line, '\n')) != NULL)
816 1040cc7f 2021-01-02 op if (*line == '<' || *line == '>') {
817 1040cc7f 2021-01-02 op future = *line == '>';
819 1040cc7f 2021-01-02 op if (*s != ' ')
821 1040cc7f 2021-01-02 op sendhist(++s, future);
823 8f1633da 2022-01-18 op parse_session_line(line);
827 bb28f1c2 2021-12-30 op fclose(session);
830 8f1633da 2022-01-18 op if (last_time_crashed()) {
831 8f1633da 2022-01-18 op struct session_tab tab;
832 8f1633da 2022-01-18 op memset(&tab, 0, sizeof(tab));
833 8f1633da 2022-01-18 op tab.flags = TAB_CURRENT;
834 8f1633da 2022-01-18 op strlcpy(tab.uri, "about:crash", sizeof(tab.uri));
835 8f1633da 2022-01-18 op fs_send_ui(IMSG_SESSION_TAB, 0, -1, &tab, sizeof(tab));
839 bb28f1c2 2021-12-30 op fs_send_ui(IMSG_SESSION_END, 0, -1, &first_time, sizeof(first_time));
843 9e97090d 2022-02-26 op load_hist(void)
846 9e97090d 2022-02-26 op size_t linesize = 0;
847 9e97090d 2022-02-26 op ssize_t linelen;
848 9e97090d 2022-02-26 op char *nl, *spc, *line = NULL;
849 9e97090d 2022-02-26 op const char *errstr;
850 9e97090d 2022-02-26 op struct histitem hi;
852 9e97090d 2022-02-26 op if ((hist = fopen(history_file, "r")) == NULL)
855 9e97090d 2022-02-26 op while ((linelen = getline(&line, &linesize, hist)) != -1) {
856 9e97090d 2022-02-26 op if ((nl = strchr(line, '\n')) != NULL)
858 9e97090d 2022-02-26 op if ((spc = strchr(line, ' ')) == NULL)
863 9e97090d 2022-02-26 op memset(&hi, 0, sizeof(hi));
864 9e97090d 2022-02-26 op hi.ts = strtonum(line, INT64_MIN, INT64_MAX, &errstr);
865 9e97090d 2022-02-26 op if (errstr != NULL)
867 9e97090d 2022-02-26 op if (strlcpy(hi.uri, spc, sizeof(hi.uri)) >= sizeof(hi.uri))
870 9e97090d 2022-02-26 op fs_send_ui(IMSG_HIST_ITEM, 0, -1, &hi, sizeof(hi));
873 9e97090d 2022-02-26 op fclose(hist);
876 9e97090d 2022-02-26 op fs_send_ui(IMSG_HIST_END, 0, -1, NULL, 0);
880 6cc5fcfe 2021-07-08 op fs_main(void)
882 6cc5fcfe 2021-07-08 op setproctitle("fs");
886 35e1f40a 2021-03-14 op event_init();
888 bc10f6a5 2021-07-12 op /* Setup pipe and event handler to the main process */
889 bc10f6a5 2021-07-12 op if ((iev_ui = malloc(sizeof(*iev_ui))) == NULL)
891 bc10f6a5 2021-07-12 op imsg_init(&iev_ui->ibuf, 3);
892 bc10f6a5 2021-07-12 op iev_ui->handler = handle_dispatch_imsg;
893 bc10f6a5 2021-07-12 op iev_ui->events = EV_READ;
894 bc10f6a5 2021-07-12 op event_set(&iev_ui->ev, iev_ui->ibuf.fd, iev_ui->events,
895 bc10f6a5 2021-07-12 op iev_ui->handler, iev_ui);
896 bc10f6a5 2021-07-12 op event_add(&iev_ui->ev, NULL);
898 35e1f40a 2021-03-14 op sandbox_fs_process();
900 35e1f40a 2021-03-14 op event_dispatch();
905 be97d6e6 2021-08-15 op * Check if the last time telescope crashed. The check is done by
906 be97d6e6 2021-08-15 op * looking at `crashed_file': if it exists then last time we crashed.
907 be97d6e6 2021-08-15 op * Then, while here, touch the file too. During IMSG_QUIT we'll
911 b6171794 2021-07-20 op last_time_crashed(void)
913 be97d6e6 2021-08-15 op int fd, crashed = 1;
915 2b409042 2021-09-15 op if (safe_mode)
918 be97d6e6 2021-08-15 op if (unlink(crashed_file) == -1 && errno == ENOENT)
921 be97d6e6 2021-08-15 op if ((fd = open(crashed_file, O_CREAT|O_WRONLY, 0600)) == -1)
922 be97d6e6 2021-08-15 op return crashed;
925 be97d6e6 2021-08-15 op return crashed;
929 d0fd368a 2021-07-15 op lock_session(void)
931 d0fd368a 2021-07-15 op struct flock lock;
934 d0fd368a 2021-07-15 op if ((fd = open(lockfile_path, O_WRONLY|O_CREAT, 0600)) == -1)
937 d0fd368a 2021-07-15 op lock.l_start = 0;
938 d0fd368a 2021-07-15 op lock.l_len = 0;
939 d0fd368a 2021-07-15 op lock.l_type = F_WRLCK;
940 d0fd368a 2021-07-15 op lock.l_whence = SEEK_SET;
942 d0fd368a 2021-07-15 op if (fcntl(fd, F_SETLK, &lock) == -1) {
950 6400962b 2022-01-03 op static inline int
951 c6d03cf5 2021-04-25 op parse_khost_line(char *line, char *tmp[3])
955 c6d03cf5 2021-04-25 op for (ap = tmp; ap < &tmp[3] &&
956 c6d03cf5 2021-04-25 op (*ap = strsep(&line, " \t\n")) != NULL;) {
957 c6d03cf5 2021-04-25 op if (**ap != '\0')
961 c6d03cf5 2021-04-25 op return ap == &tmp[3] && *line == '\0';
965 eb722b50 2022-01-03 op load_certs(void)
967 c6d03cf5 2021-04-25 op char *tmp[3], *line = NULL;
968 6cd6a9e1 2021-03-20 op const char *errstr;
969 ec1fa0b0 2021-04-25 op size_t lineno = 0, linesize = 0;
970 3a227e9a 2021-03-18 op ssize_t linelen;
972 eb722b50 2022-01-03 op struct tofu_entry e;
974 3a227e9a 2021-03-18 op if ((f = fopen(known_hosts_file, "r")) == NULL)
977 3a227e9a 2021-03-18 op while ((linelen = getline(&line, &linesize, f)) != -1) {
980 eb722b50 2022-01-03 op memset(&e, 0, sizeof(e));
981 eb722b50 2022-01-03 op if (parse_khost_line(line, tmp)) {
982 eb722b50 2022-01-03 op strlcpy(e.domain, tmp[0], sizeof(e.domain));
983 eb722b50 2022-01-03 op strlcpy(e.hash, tmp[1], sizeof(e.hash));
985 eb722b50 2022-01-03 op e.verified = strtonum(tmp[2], 0, 1, &errstr);
986 c6d03cf5 2021-04-25 op if (errstr != NULL)
987 c6d03cf5 2021-04-25 op errx(1, "%s:%zu verification for %s is %s: %s",
988 c6d03cf5 2021-04-25 op known_hosts_file, lineno,
989 eb722b50 2022-01-03 op e.domain, errstr, tmp[2]);
991 eb722b50 2022-01-03 op fs_send_ui(IMSG_TOFU, 0, -1, &e, sizeof(e));
993 ec1fa0b0 2021-04-25 op warnx("%s:%zu invalid entry",
994 ec1fa0b0 2021-04-25 op known_hosts_file, lineno);
