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"
40 35e1f40a 2021-03-14 op static void die(void) __attribute__((__noreturn__));
41 fb4dc49f 2021-08-13 op static void send_file(uint32_t, FILE *);
42 35e1f40a 2021-03-14 op static void handle_get(struct imsg*, size_t);
43 5cbe1763 2021-08-13 op static int select_non_dot(const struct dirent *);
44 5cbe1763 2021-08-13 op static int select_non_dotdot(const struct dirent *);
45 fb4dc49f 2021-08-13 op static void handle_get_file(struct imsg*, size_t);
46 35e1f40a 2021-03-14 op static void handle_quit(struct imsg*, size_t);
47 740f578b 2021-03-15 op static void handle_bookmark_page(struct imsg*, size_t);
48 3a227e9a 2021-03-18 op static void handle_save_cert(struct imsg*, size_t);
49 288fd238 2021-04-25 op static void handle_update_cert(struct imsg*, size_t);
50 de2a69bb 2021-05-17 op static void handle_file_open(struct imsg*, size_t);
51 c7107cec 2021-04-01 op static void handle_session_start(struct imsg*, size_t);
52 c7107cec 2021-04-01 op static void handle_session_tab(struct imsg*, size_t);
53 1040cc7f 2021-01-02 op static void handle_session_tab_hist(struct imsg*, size_t);
54 c7107cec 2021-04-01 op static void handle_session_end(struct imsg*, size_t);
55 1304bbdd 2021-03-15 op static void handle_dispatch_imsg(int, short, void*);
56 bc10f6a5 2021-07-12 op static int fs_send_ui(int, uint32_t, int, const void *, uint16_t);
57 eb2ed626 2021-10-07 op static size_t join_path(char*, const char*, const char*, size_t);
58 eb2ed626 2021-10-07 op static void getenv_default(char*, const char*, const char*, size_t);
59 eb2ed626 2021-10-07 op static void mkdirs(const char*, mode_t);
60 eb2ed626 2021-10-07 op static void xdg_init(void);
62 bc10f6a5 2021-07-12 op static struct imsgev *iev_ui;
63 c7107cec 2021-04-01 op static FILE *session;
66 f88fbabc 2021-11-27 op * Note: these are empty if ~/.telescope exists, use *_path_base
69 eb2ed626 2021-10-07 op static char xdg_config_base[PATH_MAX];
70 eb2ed626 2021-10-07 op static char xdg_data_base[PATH_MAX];
71 eb2ed626 2021-10-07 op static char xdg_cache_base[PATH_MAX];
74 f88fbabc 2021-11-27 op * Where to store user data. These are all equal to ~/.telescope if
77 fb3d08c1 2021-10-07 op char config_path_base[PATH_MAX];
78 fb3d08c1 2021-10-07 op char data_path_base[PATH_MAX];
79 fb3d08c1 2021-10-07 op char cache_path_base[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];
88 35e1f40a 2021-03-14 op static imsg_handlerfn *handlers[] = {
89 35e1f40a 2021-03-14 op [IMSG_GET] = handle_get,
90 fb4dc49f 2021-08-13 op [IMSG_GET_FILE] = handle_get_file,
91 35e1f40a 2021-03-14 op [IMSG_QUIT] = handle_quit,
92 740f578b 2021-03-15 op [IMSG_BOOKMARK_PAGE] = handle_bookmark_page,
93 3a227e9a 2021-03-18 op [IMSG_SAVE_CERT] = handle_save_cert,
94 288fd238 2021-04-25 op [IMSG_UPDATE_CERT] = handle_update_cert,
95 de2a69bb 2021-05-17 op [IMSG_FILE_OPEN] = handle_file_open,
96 c7107cec 2021-04-01 op [IMSG_SESSION_START] = handle_session_start,
97 c7107cec 2021-04-01 op [IMSG_SESSION_TAB] = handle_session_tab,
98 1040cc7f 2021-01-02 op [IMSG_SESSION_TAB_HIST] = handle_session_tab_hist,
99 c7107cec 2021-04-01 op [IMSG_SESSION_END] = handle_session_end,
102 35e1f40a 2021-03-14 op static void __attribute__((__noreturn__))
105 35e1f40a 2021-03-14 op abort(); /* TODO */
109 fb4dc49f 2021-08-13 op send_file(uint32_t peerid, FILE *f)
112 fb4dc49f 2021-08-13 op char buf[BUFSIZ];
115 fb4dc49f 2021-08-13 op r = fread(buf, 1, sizeof(buf), f);
117 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_BUF, peerid, -1, buf, r);
118 fb4dc49f 2021-08-13 op if (r != sizeof(buf))
121 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_EOF, peerid, -1, NULL, 0);
126 35e1f40a 2021-03-14 op handle_get(struct imsg *imsg, size_t datalen)
128 56e7efb4 2021-07-21 op const char *bpath = "bookmarks.gmi";
129 fb4dc49f 2021-08-13 op char path[PATH_MAX];
131 a2728733 2021-07-18 op const char *data, *p;
133 a2728733 2021-07-18 op struct page {
134 a2728733 2021-07-18 op const char *name;
135 56e7efb4 2021-07-21 op const char *path;
136 a2728733 2021-07-18 op const uint8_t *data;
138 a2728733 2021-07-18 op } pages[] = {
139 56e7efb4 2021-07-21 op {"about", NULL, about_about, about_about_len},
140 56e7efb4 2021-07-21 op {"blank", NULL, about_blank, about_blank_len},
141 56e7efb4 2021-07-21 op {"bookmarks", bpath, bookmarks, bookmarks_len},
142 56e7efb4 2021-07-21 op {"crash", NULL, about_crash, about_crash_len},
143 56e7efb4 2021-07-21 op {"help", NULL, about_help, about_help_len},
144 56e7efb4 2021-07-21 op {"license", NULL, about_license, about_license_len},
145 56e7efb4 2021-07-21 op {"new", NULL, about_new, about_new_len},
146 56e7efb4 2021-07-21 op }, *page = NULL;
148 35e1f40a 2021-03-14 op data = imsg->data;
149 56e7efb4 2021-07-21 op if (data[datalen-1] != '\0') /* make sure it's NUL-terminated */
151 56e7efb4 2021-07-21 op if ((data = strchr(data, ':')) == NULL)
152 56e7efb4 2021-07-21 op goto notfound;
155 56e7efb4 2021-07-21 op for (i = 0; i < sizeof(pages)/sizeof(pages[0]); ++i)
156 56e7efb4 2021-07-21 op if (!strcmp(data, pages[i].name)) {
157 56e7efb4 2021-07-21 op page = &pages[i];
161 56e7efb4 2021-07-21 op if (page == NULL)
162 56e7efb4 2021-07-21 op goto notfound;
164 de04b178 2021-11-26 op strlcpy(path, data_path_base, sizeof(path));
165 56e7efb4 2021-07-21 op strlcat(path, "/", sizeof(path));
166 56e7efb4 2021-07-21 op if (page->path != NULL)
167 56e7efb4 2021-07-21 op strlcat(path, page->path, sizeof(path));
169 56e7efb4 2021-07-21 op strlcat(path, "pages/about_", sizeof(path));
170 56e7efb4 2021-07-21 op strlcat(path, page->name, sizeof(path));
171 56e7efb4 2021-07-21 op strlcat(path, ".gmi", sizeof(path));
174 56e7efb4 2021-07-21 op if ((f = fopen(path, "r")) == NULL) {
175 56e7efb4 2021-07-21 op fs_send_ui(IMSG_BUF, imsg->hdr.peerid, -1,
176 56e7efb4 2021-07-21 op page->data, page->len);
177 56e7efb4 2021-07-21 op fs_send_ui(IMSG_EOF, imsg->hdr.peerid, -1,
182 fb4dc49f 2021-08-13 op send_file(imsg->hdr.peerid, f);
186 a2728733 2021-07-18 op p = "# not found!\n";
187 a2728733 2021-07-18 op fs_send_ui(IMSG_BUF, imsg->hdr.peerid, -1, p, strlen(p));
188 a2728733 2021-07-18 op fs_send_ui(IMSG_EOF, imsg->hdr.peerid, -1, NULL, 0);
191 fb4dc49f 2021-08-13 op static inline void
192 fb4dc49f 2021-08-13 op send_hdr(uint32_t peerid, int code, const char *meta)
194 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_GOT_CODE, peerid, -1, &code, sizeof(code));
195 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_GOT_META, peerid, -1, meta, strlen(meta)+1);
198 24a68158 2021-08-13 op static inline void
199 24a68158 2021-08-13 op send_errno(uint32_t peerid, int code, const char *str, int no)
203 24a68158 2021-08-13 op if (asprintf(&s, "%s: %s", str, strerror(no)) == -1)
206 24a68158 2021-08-13 op send_hdr(peerid, code, s == NULL ? str : s);
210 65124267 2021-08-13 op static inline const char *
211 65124267 2021-08-13 op file_type(const char *path)
213 fb4dc49f 2021-08-13 op struct mapping {
214 fb4dc49f 2021-08-13 op const char *ext;
215 fb4dc49f 2021-08-13 op const char *mime;
217 fb4dc49f 2021-08-13 op {"diff", "text/x-patch"},
218 fb4dc49f 2021-08-13 op {"gemini", "text/gemini"},
219 fb4dc49f 2021-08-13 op {"gmi", "text/gemini"},
220 fb4dc49f 2021-08-13 op {"markdown", "text/plain"},
221 fb4dc49f 2021-08-13 op {"md", "text/plain"},
222 fb4dc49f 2021-08-13 op {"patch", "text/x-patch"},
223 fb4dc49f 2021-08-13 op {"txt", "text/plain"},
224 fb4dc49f 2021-08-13 op {NULL, NULL},
228 65124267 2021-08-13 op if ((dot = strrchr(path, '.')) == NULL)
233 65124267 2021-08-13 op for (m = ms; m->ext != NULL; ++m)
234 65124267 2021-08-13 op if (!strcmp(m->ext, dot))
235 65124267 2021-08-13 op return m->mime;
241 5cbe1763 2021-08-13 op select_non_dot(const struct dirent *d)
243 5cbe1763 2021-08-13 op return strcmp(d->d_name, ".");
247 5cbe1763 2021-08-13 op select_non_dotdot(const struct dirent *d)
249 5cbe1763 2021-08-13 op return strcmp(d->d_name, ".") && strcmp(d->d_name, "..");
252 65124267 2021-08-13 op static inline void
253 65124267 2021-08-13 op send_dir(uint32_t peerid, const char *path)
255 65124267 2021-08-13 op struct dirent **names;
256 65124267 2021-08-13 op struct evbuffer *ev;
258 5cbe1763 2021-08-13 op int (*selector)(const struct dirent *) = select_non_dot;
259 24a68158 2021-08-13 op int i, len, no;
261 5d43215b 2021-08-13 op if (!has_suffix(path, "/")) {
262 5d43215b 2021-08-13 op if (asprintf(&s, "%s/", path) == -1)
264 5d43215b 2021-08-13 op send_hdr(peerid, 30, s);
269 5cbe1763 2021-08-13 op if (!strcmp(path, "/"))
270 5cbe1763 2021-08-13 op selector = select_non_dotdot;
272 65124267 2021-08-13 op if ((ev = evbuffer_new()) == NULL ||
273 5cbe1763 2021-08-13 op (len = scandir(path, &names, selector, alphasort)) == -1) {
275 65124267 2021-08-13 op evbuffer_free(ev);
276 24a68158 2021-08-13 op send_errno(peerid, 40, "failure reading the directory", no);
280 65124267 2021-08-13 op evbuffer_add_printf(ev, "# Index of %s\n\n", path);
281 65124267 2021-08-13 op for (i = 0; i < len; ++i) {
282 65124267 2021-08-13 op evbuffer_add_printf(ev, "=> %s", names[i]->d_name);
283 65124267 2021-08-13 op if (names[i]->d_type == DT_DIR)
284 65124267 2021-08-13 op evbuffer_add(ev, "/", 1);
285 65124267 2021-08-13 op evbuffer_add(ev, "\n", 1);
288 65124267 2021-08-13 op send_hdr(peerid, 20, "text/gemini");
289 65124267 2021-08-13 op fs_send_ui(IMSG_BUF, peerid, -1,
290 65124267 2021-08-13 op EVBUFFER_DATA(ev), EVBUFFER_LENGTH(ev));
291 65124267 2021-08-13 op fs_send_ui(IMSG_EOF, peerid, -1, NULL, 0);
293 65124267 2021-08-13 op evbuffer_free(ev);
298 65124267 2021-08-13 op handle_get_file(struct imsg *imsg, size_t datalen)
300 65124267 2021-08-13 op struct stat sb;
303 fb4dc49f 2021-08-13 op const char *meta = NULL;
305 fb4dc49f 2021-08-13 op data = imsg->data;
306 fb4dc49f 2021-08-13 op data[datalen-1] = '\0';
308 65124267 2021-08-13 op if ((f = fopen(data, "r")) == NULL) {
309 24a68158 2021-08-13 op send_errno(imsg->hdr.peerid, 51, "can't open", errno);
313 65124267 2021-08-13 op if (fstat(fileno(f), &sb) == -1) {
314 24a68158 2021-08-13 op send_errno(imsg->hdr.peerid, 40, "fstat", errno);
318 65124267 2021-08-13 op if (S_ISDIR(sb.st_mode)) {
320 65124267 2021-08-13 op send_dir(imsg->hdr.peerid, data);
324 65124267 2021-08-13 op if ((meta = file_type(data)) == NULL) {
326 65124267 2021-08-13 op send_hdr(imsg->hdr.peerid, 51,
327 65124267 2021-08-13 op "don't know how to visualize this file");
331 fb4dc49f 2021-08-13 op send_hdr(imsg->hdr.peerid, 20, meta);
332 fb4dc49f 2021-08-13 op send_file(imsg->hdr.peerid, f);
336 35e1f40a 2021-03-14 op handle_quit(struct imsg *imsg, size_t datalen)
338 2b409042 2021-09-15 op if (!safe_mode)
339 2b409042 2021-09-15 op unlink(crashed_file);
341 35e1f40a 2021-03-14 op event_loopbreak();
345 740f578b 2021-03-15 op handle_bookmark_page(struct imsg *imsg, size_t datalen)
351 740f578b 2021-03-15 op data = imsg->data;
352 740f578b 2021-03-15 op if (data[datalen-1] != '\0')
355 740f578b 2021-03-15 op if ((f = fopen(bookmark_file, "a")) == NULL) {
359 740f578b 2021-03-15 op fprintf(f, "=> %s\n", data);
364 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_BOOKMARK_OK, 0, -1, &res, sizeof(res));
368 3a227e9a 2021-03-18 op handle_save_cert(struct imsg *imsg, size_t datalen)
370 3a227e9a 2021-03-18 op struct tofu_entry e;
374 3a227e9a 2021-03-18 op /* TODO: traverse the file to avoid duplications? */
376 3a227e9a 2021-03-18 op if (datalen != sizeof(e))
378 3a227e9a 2021-03-18 op memcpy(&e, imsg->data, datalen);
380 3a227e9a 2021-03-18 op if ((f = fopen(known_hosts_file, "a")) == NULL) {
384 3a227e9a 2021-03-18 op fprintf(f, "%s %s %d\n", e.domain, e.hash, e.verified);
389 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_SAVE_CERT_OK, imsg->hdr.peerid, -1,
390 288fd238 2021-04-25 op &res, sizeof(res));
394 288fd238 2021-04-25 op handle_update_cert(struct imsg *imsg, size_t datalen)
396 288fd238 2021-04-25 op FILE *tmp, *f;
397 288fd238 2021-04-25 op struct tofu_entry entry;
398 288fd238 2021-04-25 op char sfn[PATH_MAX], *line = NULL, *t;
399 288fd238 2021-04-25 op size_t l, linesize = 0;
400 288fd238 2021-04-25 op ssize_t linelen;
401 288fd238 2021-04-25 op int fd, e, res = 0;
403 288fd238 2021-04-25 op if (datalen != sizeof(entry))
405 288fd238 2021-04-25 op memcpy(&entry, imsg->data, datalen);
407 288fd238 2021-04-25 op strlcpy(sfn, known_hosts_tmp, sizeof(sfn));
408 288fd238 2021-04-25 op if ((fd = mkstemp(sfn)) == -1 ||
409 288fd238 2021-04-25 op (tmp = fdopen(fd, "w")) == NULL) {
410 288fd238 2021-04-25 op if (fd != -1) {
418 288fd238 2021-04-25 op if ((f = fopen(known_hosts_file, "r")) == NULL) {
425 288fd238 2021-04-25 op l = strlen(entry.domain);
426 288fd238 2021-04-25 op while ((linelen = getline(&line, &linesize, f)) != -1) {
427 288fd238 2021-04-25 op if ((t = strstr(line, entry.domain)) != NULL &&
428 288fd238 2021-04-25 op (line[l] == ' ' || line[l] == '\t'))
430 288fd238 2021-04-25 op /* line has a trailing \n */
431 288fd238 2021-04-25 op fprintf(tmp, "%s", line);
433 288fd238 2021-04-25 op fprintf(tmp, "%s %s %d\n", entry.domain, entry.hash, entry.verified);
436 288fd238 2021-04-25 op e = ferror(tmp);
447 288fd238 2021-04-25 op res = rename(sfn, known_hosts_file) != -1;
450 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_UPDATE_CERT_OK, imsg->hdr.peerid, -1,
451 3a227e9a 2021-03-18 op &res, sizeof(res));
455 de2a69bb 2021-05-17 op handle_file_open(struct imsg *imsg, size_t datalen)
457 de2a69bb 2021-05-17 op char *path, *e;
460 de2a69bb 2021-05-17 op path = imsg->data;
461 de2a69bb 2021-05-17 op if (path[datalen-1] != '\0')
464 de2a69bb 2021-05-17 op if ((fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, 0644)) == -1) {
465 de2a69bb 2021-05-17 op e = strerror(errno);
466 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_FILE_OPENED, imsg->hdr.peerid, -1,
467 de2a69bb 2021-05-17 op e, strlen(e)+1);
469 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_FILE_OPENED, imsg->hdr.peerid, fd,
474 c7107cec 2021-04-01 op handle_session_start(struct imsg *imsg, size_t datalen)
476 c7107cec 2021-04-01 op if (datalen != 0)
479 c7107cec 2021-04-01 op if ((session = fopen(session_file, "w")) == NULL)
484 c7107cec 2021-04-01 op handle_session_tab(struct imsg *imsg, size_t datalen)
486 f8c6e753 2021-12-30 op struct session_tab tab;
488 c7107cec 2021-04-01 op if (session == NULL)
491 f8c6e753 2021-12-30 op if (datalen != sizeof(tab))
494 f8c6e753 2021-12-30 op memcpy(&tab, imsg->data, sizeof(tab));
495 f8c6e753 2021-12-30 op if (tab.uri[sizeof(tab.uri)-1] != '\0' ||
496 f8c6e753 2021-12-30 op tab.title[sizeof(tab.title)-1] != '\0')
499 f8c6e753 2021-12-30 op fprintf(session, "%s", tab.uri);
501 f8c6e753 2021-12-30 op if (tab.flags & TAB_CURRENT)
502 2f524b17 2021-07-17 op fprintf(session, " current ");
504 2f524b17 2021-07-17 op fprintf(session, " - ");
506 f8c6e753 2021-12-30 op fprintf(session, "%s\n", tab.title);
510 1040cc7f 2021-01-02 op handle_session_tab_hist(struct imsg *imsg, size_t datalen)
512 1040cc7f 2021-01-02 op struct session_tab_hist th;
514 1040cc7f 2021-01-02 op if (session == NULL)
517 1040cc7f 2021-01-02 op if (datalen != sizeof(th))
520 1040cc7f 2021-01-02 op memcpy(&th, imsg->data, sizeof(th));
521 1040cc7f 2021-01-02 op if (th.uri[sizeof(th.uri)-1] != '\0')
524 1040cc7f 2021-01-02 op fprintf(session, "%s %s\n", th.future ? ">" : "<", th.uri);
528 c7107cec 2021-04-01 op handle_session_end(struct imsg *imsg, size_t datalen)
530 c7107cec 2021-04-01 op if (session == NULL)
532 c7107cec 2021-04-01 op fclose(session);
533 c7107cec 2021-04-01 op session = NULL;
537 1304bbdd 2021-03-15 op handle_dispatch_imsg(int fd, short ev, void *d)
539 bc10f6a5 2021-07-12 op struct imsgev *iev = d;
542 ea080950 2021-07-20 op if (dispatch_imsg(iev, ev, handlers, sizeof(handlers)) == -1) {
544 eb2ed626 2021-10-07 op * This should leave a ~/.cache/telescope/crashed file to
545 ea080950 2021-07-20 op * trigger about:crash on next run. Unfortunately, if
546 ea080950 2021-07-20 op * the main process dies the fs sticks around and
547 ea080950 2021-07-20 op * doesn't notice that the fd was closed. Why EV_READ
548 ea080950 2021-07-20 op * is not triggered when a fd is closed on the other end?
551 ea080950 2021-07-20 op if ((fd = open(crashed_file, O_CREAT|O_TRUNC|O_WRONLY, 0600))
553 ea080950 2021-07-20 op err(1, "open");
555 ea080950 2021-07-20 op errx(1, "connection closed: %s", strerror(e));
560 bc10f6a5 2021-07-12 op fs_send_ui(int type, uint32_t peerid, int fd, const void *data,
561 bc10f6a5 2021-07-12 op uint16_t datalen)
563 bc10f6a5 2021-07-12 op return imsg_compose_event(iev_ui, type, peerid, 0, fd,
564 bc10f6a5 2021-07-12 op data, datalen);
567 eb2ed626 2021-10-07 op static size_t
568 eb2ed626 2021-10-07 op join_path(char *buf, const char *lhs, const char *rhs, size_t buflen)
570 eb2ed626 2021-10-07 op strlcpy(buf, lhs, buflen);
571 eb2ed626 2021-10-07 op return strlcat(buf, rhs, buflen);
575 eb2ed626 2021-10-07 op getenv_default(char *buf, const char *name, const char *def, size_t buflen)
578 eb2ed626 2021-10-07 op char *home, *env;
580 eb2ed626 2021-10-07 op if ((home = getenv("HOME")) == NULL)
581 eb2ed626 2021-10-07 op errx(1, "HOME is not defined");
583 eb2ed626 2021-10-07 op if ((env = getenv(name)) != NULL)
584 eb2ed626 2021-10-07 op ret = strlcpy(buf, env, buflen);
586 eb2ed626 2021-10-07 op ret = join_path(buf, home, def, buflen);
588 eb2ed626 2021-10-07 op if (ret >= buflen)
589 eb2ed626 2021-10-07 op errx(1, "buffer too small for %s", name);
593 eb2ed626 2021-10-07 op mkdirs(const char *path, mode_t mode)
595 444dad86 2021-10-07 op char copy[PATH_MAX+1], orig[PATH_MAX+1], *parent;
597 eb2ed626 2021-10-07 op strlcpy(copy, path, sizeof(copy));
598 444dad86 2021-10-07 op strlcpy(orig, path, sizeof(orig));
599 eb2ed626 2021-10-07 op parent = dirname(copy);
600 eb2ed626 2021-10-07 op if (!strcmp(parent, "/"))
602 eb2ed626 2021-10-07 op mkdirs(parent, mode);
604 444dad86 2021-10-07 op if (mkdir(orig, mode) != 0) {
605 eb2ed626 2021-10-07 op if (errno == EEXIST)
607 444dad86 2021-10-07 op err(1, "can't mkdir %s", orig);
612 eb2ed626 2021-10-07 op xdg_init(void)
614 eb2ed626 2021-10-07 op char *home, old_path[PATH_MAX];
615 eb2ed626 2021-10-07 op struct stat info;
617 eb2ed626 2021-10-07 op /* old path */
618 eb2ed626 2021-10-07 op if ((home = getenv("HOME")) == NULL)
619 eb2ed626 2021-10-07 op errx(1, "HOME is not defined");
620 eb2ed626 2021-10-07 op join_path(old_path, home, "/.telescope", sizeof(old_path));
622 eb2ed626 2021-10-07 op /* if ~/.telescope exists, use that instead of xdg dirs */
623 eb2ed626 2021-10-07 op if (stat(old_path, &info) == 0 && S_ISDIR(info.st_mode)) {
624 eb2ed626 2021-10-07 op join_path(config_path_base, home, "/.telescope",
625 eb2ed626 2021-10-07 op sizeof(config_path_base));
626 eb2ed626 2021-10-07 op join_path(data_path_base, home, "/.telescope",
627 eb2ed626 2021-10-07 op sizeof(data_path_base));
628 eb2ed626 2021-10-07 op join_path(cache_path_base, home, "/.telescope",
629 eb2ed626 2021-10-07 op sizeof(cache_path_base));
633 eb2ed626 2021-10-07 op /* xdg paths */
634 eb2ed626 2021-10-07 op getenv_default(xdg_config_base, "XDG_CONFIG_HOME", "/.config",
635 eb2ed626 2021-10-07 op sizeof(xdg_config_base));
636 eb2ed626 2021-10-07 op getenv_default(xdg_data_base, "XDG_DATA_HOME", "/.local/share",
637 eb2ed626 2021-10-07 op sizeof(xdg_data_base));
638 eb2ed626 2021-10-07 op getenv_default(xdg_cache_base, "XDG_CACHE_HOME", "/.cache",
639 eb2ed626 2021-10-07 op sizeof(xdg_cache_base));
641 eb2ed626 2021-10-07 op join_path(config_path_base, xdg_config_base, "/telescope",
642 eb2ed626 2021-10-07 op sizeof(config_path_base));
643 eb2ed626 2021-10-07 op join_path(data_path_base, xdg_data_base, "/telescope",
644 eb2ed626 2021-10-07 op sizeof(data_path_base));
645 eb2ed626 2021-10-07 op join_path(cache_path_base, xdg_cache_base, "/telescope",
646 eb2ed626 2021-10-07 op sizeof(cache_path_base));
648 eb2ed626 2021-10-07 op mkdirs(xdg_config_base, S_IRWXU);
649 eb2ed626 2021-10-07 op mkdirs(xdg_data_base, S_IRWXU);
650 eb2ed626 2021-10-07 op mkdirs(xdg_cache_base, S_IRWXU);
652 eb2ed626 2021-10-07 op mkdirs(config_path_base, S_IRWXU);
653 eb2ed626 2021-10-07 op mkdirs(data_path_base, S_IRWXU);
654 eb2ed626 2021-10-07 op mkdirs(cache_path_base, S_IRWXU);
658 eb2ed626 2021-10-07 op fs_init(void)
662 eb2ed626 2021-10-07 op join_path(config_path, config_path_base, "/config",
663 eb2ed626 2021-10-07 op sizeof(config_path));
664 eb2ed626 2021-10-07 op join_path(lockfile_path, cache_path_base, "/lock",
665 eb2ed626 2021-10-07 op sizeof(lockfile_path));
666 eb2ed626 2021-10-07 op join_path(bookmark_file, data_path_base, "/bookmarks.gmi",
667 eb2ed626 2021-10-07 op sizeof(bookmark_file));
668 eb2ed626 2021-10-07 op join_path(known_hosts_file, data_path_base, "/known_hosts",
669 eb2ed626 2021-10-07 op sizeof(known_hosts_file));
670 eb2ed626 2021-10-07 op join_path(known_hosts_tmp, cache_path_base,
671 eb2ed626 2021-10-07 op "/known_hosts.tmp.XXXXXXXXXX", sizeof(known_hosts_tmp));
672 eb2ed626 2021-10-07 op join_path(session_file, cache_path_base, "/session",
673 eb2ed626 2021-10-07 op sizeof(session_file));
674 eb2ed626 2021-10-07 op join_path(crashed_file, cache_path_base, "/crashed",
675 eb2ed626 2021-10-07 op sizeof(crashed_file));
681 bb28f1c2 2021-12-30 op * Parse a line of the session file. The format is:
683 bb28f1c2 2021-12-30 op * URL [flags,...] [title]\n
686 bb28f1c2 2021-12-30 op parse_session_line(char *line, const char **title, uint32_t *flags)
688 bb28f1c2 2021-12-30 op char *s, *t, *ap;
692 bb28f1c2 2021-12-30 op if ((s = strchr(line, ' ')) == NULL)
697 bb28f1c2 2021-12-30 op if ((t = strchr(s, ' ')) != NULL) {
702 bb28f1c2 2021-12-30 op while ((ap = strsep(&s, ",")) != NULL) {
703 bb28f1c2 2021-12-30 op if (!strcmp(ap, "current"))
704 bb28f1c2 2021-12-30 op *flags |= TAB_CURRENT;
708 bb28f1c2 2021-12-30 op static inline void
709 bb28f1c2 2021-12-30 op sendtab(uint32_t flags, const char *uri, const char *title)
711 bb28f1c2 2021-12-30 op struct session_tab tab;
713 bb28f1c2 2021-12-30 op memset(&tab, 0, sizeof(tab));
714 bb28f1c2 2021-12-30 op tab.flags = flags;
716 bb28f1c2 2021-12-30 op if (strlcpy(tab.uri, uri, sizeof(tab.uri)) >= sizeof(tab.uri))
719 bb28f1c2 2021-12-30 op /* don't worry about cached title truncation */
720 bb28f1c2 2021-12-30 op if (title != NULL)
721 bb28f1c2 2021-12-30 op strlcpy(tab.title, title, sizeof(tab.title));
723 bb28f1c2 2021-12-30 op fs_send_ui(IMSG_SESSION_TAB, 0, -1, &tab, sizeof(tab));
726 1040cc7f 2021-01-02 op static inline void
727 1040cc7f 2021-01-02 op sendhist(const char *uri, int future)
729 1040cc7f 2021-01-02 op struct session_tab_hist sth;
731 1040cc7f 2021-01-02 op memset(&sth, 0, sizeof(sth));
732 1040cc7f 2021-01-02 op sth.future = future;
734 1040cc7f 2021-01-02 op if (strlcpy(sth.uri, uri, sizeof(sth.uri)) >= sizeof(sth.uri))
737 1040cc7f 2021-01-02 op fs_send_ui(IMSG_SESSION_TAB_HIST, 0, -1, &sth, sizeof(sth));
741 bb28f1c2 2021-12-30 op load_last_session(int fd, short event, void *d)
743 bb28f1c2 2021-12-30 op FILE *session;
744 bb28f1c2 2021-12-30 op uint32_t flags;
745 bb28f1c2 2021-12-30 op size_t linesize = 0;
746 bb28f1c2 2021-12-30 op ssize_t linelen;
747 bb28f1c2 2021-12-30 op int first_time = 0;
749 bb28f1c2 2021-12-30 op const char *title;
750 1040cc7f 2021-01-02 op char *nl, *s, *line = NULL;
752 bb28f1c2 2021-12-30 op if ((session = fopen(session_file, "r")) == NULL) {
753 bb28f1c2 2021-12-30 op /* first time? */
754 bb28f1c2 2021-12-30 op first_time = 1;
758 bb28f1c2 2021-12-30 op while ((linelen = getline(&line, &linesize, session)) != -1) {
759 bb28f1c2 2021-12-30 op if ((nl = strchr(line, '\n')) != NULL)
762 1040cc7f 2021-01-02 op if (*line == '<' || *line == '>') {
763 1040cc7f 2021-01-02 op future = *line == '>';
765 1040cc7f 2021-01-02 op if (*s != ' ')
767 1040cc7f 2021-01-02 op sendhist(++s, future);
769 1040cc7f 2021-01-02 op parse_session_line(line, &title, &flags);
770 1040cc7f 2021-01-02 op sendtab(flags, line, title);
774 bb28f1c2 2021-12-30 op fclose(session);
777 bb28f1c2 2021-12-30 op if (last_time_crashed())
778 bb28f1c2 2021-12-30 op sendtab(TAB_CURRENT, "about:crash", NULL);
781 bb28f1c2 2021-12-30 op fs_send_ui(IMSG_SESSION_END, 0, -1, &first_time, sizeof(first_time));
785 6cc5fcfe 2021-07-08 op fs_main(void)
787 bb28f1c2 2021-12-30 op struct event ev;
788 bb28f1c2 2021-12-30 op struct timeval t = {0, 0};
790 6cc5fcfe 2021-07-08 op setproctitle("fs");
794 35e1f40a 2021-03-14 op event_init();
796 bc10f6a5 2021-07-12 op /* Setup pipe and event handler to the main process */
797 bc10f6a5 2021-07-12 op if ((iev_ui = malloc(sizeof(*iev_ui))) == NULL)
799 bc10f6a5 2021-07-12 op imsg_init(&iev_ui->ibuf, 3);
800 bc10f6a5 2021-07-12 op iev_ui->handler = handle_dispatch_imsg;
801 bc10f6a5 2021-07-12 op iev_ui->events = EV_READ;
802 bc10f6a5 2021-07-12 op event_set(&iev_ui->ev, iev_ui->ibuf.fd, iev_ui->events,
803 bc10f6a5 2021-07-12 op iev_ui->handler, iev_ui);
804 bc10f6a5 2021-07-12 op event_add(&iev_ui->ev, NULL);
806 35e1f40a 2021-03-14 op sandbox_fs_process();
809 bb28f1c2 2021-12-30 op * Run load_last_session during the event loop, as soon as
810 bb28f1c2 2021-12-30 op * possible; it uses fs_send_ui so it can't be ran outside
811 bb28f1c2 2021-12-30 op * of event_dispatch.
813 bb28f1c2 2021-12-30 op evtimer_set(&ev, load_last_session, NULL);
814 bb28f1c2 2021-12-30 op evtimer_add(&ev, &t);
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) {
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 3a227e9a 2021-03-18 op load_certs(struct ohash *h)
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 3a227e9a 2021-03-18 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) {
896 3a227e9a 2021-03-18 op if ((e = calloc(1, sizeof(*e))) == NULL)
901 c6d03cf5 2021-04-25 op if (parse_khost_line(line, tmp)) {
902 c6d03cf5 2021-04-25 op strlcpy(e->domain, tmp[0], sizeof(e->domain));
903 c6d03cf5 2021-04-25 op strlcpy(e->hash, tmp[1], sizeof(e->hash));
905 c6d03cf5 2021-04-25 op e->verified = strtonum(tmp[2], 0, 1, &errstr);
906 c6d03cf5 2021-04-25 op if (errstr != NULL)
907 c6d03cf5 2021-04-25 op errx(1, "%s:%zu verification for %s is %s: %s",
908 c6d03cf5 2021-04-25 op known_hosts_file, lineno,
909 c6d03cf5 2021-04-25 op e->domain, errstr, tmp[2]);
910 c6d03cf5 2021-04-25 op tofu_add(h, e);
912 ec1fa0b0 2021-04-25 op warnx("%s:%zu invalid entry",
913 ec1fa0b0 2021-04-25 op known_hosts_file, lineno);
919 3a227e9a 2021-03-18 op return ferror(f);
