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f401e48c LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2011 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
f401e48c LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
f401e48c | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
f401e48c LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
f401e48c LP |
22 | #include <errno.h> |
23 | #include <string.h> | |
24 | #include <unistd.h> | |
25 | ||
40ca29a1 LP |
26 | #include "sd-id128.h" |
27 | #include "sd-messages.h" | |
28 | #include "sd-event.h" | |
29 | #include "sd-bus.h" | |
30 | ||
f401e48c LP |
31 | #include "util.h" |
32 | #include "strv.h" | |
ad740100 | 33 | #include "def.h" |
bbc98d32 | 34 | #include "hwclock.h" |
b32d1675 | 35 | #include "conf-files.h" |
424a19f8 | 36 | #include "path-util.h" |
a5c32cff HH |
37 | #include "fileio-label.h" |
38 | #include "label.h" | |
40ca29a1 LP |
39 | #include "bus-util.h" |
40 | #include "event-util.h" | |
f401e48c LP |
41 | |
42 | #define NULL_ADJTIME_UTC "0.0 0 0\n0\nUTC\n" | |
43 | #define NULL_ADJTIME_LOCAL "0.0 0 0\n0\nLOCAL\n" | |
44 | ||
40ca29a1 | 45 | typedef struct Context { |
d200735e MS |
46 | char *zone; |
47 | bool local_rtc; | |
9bcbce42 KS |
48 | unsigned can_ntp; |
49 | unsigned use_ntp; | |
40ca29a1 LP |
50 | Hashmap *polkit_registry; |
51 | } Context; | |
f401e48c | 52 | |
40ca29a1 LP |
53 | static void context_reset(Context *c) { |
54 | assert(c); | |
d200735e | 55 | |
40ca29a1 LP |
56 | free(c->zone); |
57 | c->zone = NULL; | |
ad740100 | 58 | |
40ca29a1 LP |
59 | c->local_rtc = false; |
60 | c->can_ntp = c->use_ntp = -1; | |
61 | } | |
62 | ||
63 | static void context_free(Context *c, sd_bus *bus) { | |
64 | assert(c); | |
f401e48c | 65 | |
7e9cf16c | 66 | context_reset(c); |
40ca29a1 | 67 | bus_verify_polkit_async_registry_free(bus, c->polkit_registry); |
f401e48c LP |
68 | } |
69 | ||
70 | static bool valid_timezone(const char *name) { | |
71 | const char *p; | |
72 | char *t; | |
73 | bool slash = false; | |
74 | int r; | |
75 | struct stat st; | |
76 | ||
77 | assert(name); | |
78 | ||
79 | if (*name == '/' || *name == 0) | |
80 | return false; | |
81 | ||
82 | for (p = name; *p; p++) { | |
83 | if (!(*p >= '0' && *p <= '9') && | |
84 | !(*p >= 'a' && *p <= 'z') && | |
85 | !(*p >= 'A' && *p <= 'Z') && | |
86 | !(*p == '-' || *p == '_' || *p == '+' || *p == '/')) | |
87 | return false; | |
88 | ||
89 | if (*p == '/') { | |
90 | ||
91 | if (slash) | |
92 | return false; | |
93 | ||
94 | slash = true; | |
95 | } else | |
96 | slash = false; | |
97 | } | |
98 | ||
99 | if (slash) | |
100 | return false; | |
101 | ||
424a19f8 | 102 | t = strappend("/usr/share/zoneinfo/", name); |
f401e48c LP |
103 | if (!t) |
104 | return false; | |
105 | ||
106 | r = stat(t, &st); | |
107 | free(t); | |
108 | ||
109 | if (r < 0) | |
110 | return false; | |
111 | ||
112 | if (!S_ISREG(st.st_mode)) | |
113 | return false; | |
114 | ||
115 | return true; | |
116 | } | |
117 | ||
40ca29a1 | 118 | static int context_read_data(Context *c) { |
424a19f8 | 119 | _cleanup_free_ char *t = NULL; |
40ca29a1 LP |
120 | int r; |
121 | ||
122 | assert(c); | |
f401e48c | 123 | |
40ca29a1 | 124 | context_reset(c); |
f401e48c | 125 | |
92c4ef2d SL |
126 | r = readlink_malloc("/etc/localtime", &t); |
127 | if (r < 0) { | |
128 | if (r == -EINVAL) | |
424a19f8 | 129 | log_warning("/etc/localtime should be a symbolic link to a timezone data file in /usr/share/zoneinfo/."); |
92c4ef2d | 130 | else |
424a19f8 | 131 | log_warning("Failed to get target of /etc/localtime: %s", strerror(-r)); |
92c4ef2d | 132 | } else { |
424a19f8 | 133 | const char *e; |
92c4ef2d | 134 | |
424a19f8 LP |
135 | e = path_startswith(t, "/usr/share/zoneinfo/"); |
136 | if (!e) | |
137 | e = path_startswith(t, "../usr/share/zoneinfo/"); | |
138 | ||
139 | if (!e) | |
140 | log_warning("/etc/localtime should be a symbolic link to a timezone data file in /usr/share/zoneinfo/."); | |
92c4ef2d | 141 | else { |
40ca29a1 LP |
142 | c->zone = strdup(e); |
143 | if (!c->zone) | |
92c4ef2d SL |
144 | return log_oom(); |
145 | ||
146 | goto have_timezone; | |
147 | } | |
148 | } | |
149 | ||
92c4ef2d | 150 | have_timezone: |
40ca29a1 LP |
151 | if (isempty(c->zone)) { |
152 | free(c->zone); | |
153 | c->zone = NULL; | |
a724d2ed | 154 | } |
f401e48c | 155 | |
40ca29a1 | 156 | c->local_rtc = hwclock_is_localtime() > 0; |
f401e48c LP |
157 | |
158 | return 0; | |
159 | } | |
160 | ||
40ca29a1 | 161 | static int context_write_data_timezone(Context *c) { |
424a19f8 | 162 | _cleanup_free_ char *p = NULL; |
40ca29a1 LP |
163 | int r = 0; |
164 | ||
165 | assert(c); | |
e19a21a8 | 166 | |
40ca29a1 | 167 | if (isempty(c->zone)) { |
424a19f8 | 168 | if (unlink("/etc/localtime") < 0 && errno != ENOENT) |
f401e48c LP |
169 | r = -errno; |
170 | ||
f401e48c LP |
171 | return r; |
172 | } | |
173 | ||
40ca29a1 | 174 | p = strappend("../usr/share/zoneinfo/", c->zone); |
0d0f0c50 SL |
175 | if (!p) |
176 | return log_oom(); | |
f401e48c | 177 | |
424a19f8 | 178 | r = symlink_atomic(p, "/etc/localtime"); |
f401e48c | 179 | if (r < 0) |
424a19f8 | 180 | return r; |
f401e48c | 181 | |
f401e48c LP |
182 | return 0; |
183 | } | |
184 | ||
40ca29a1 | 185 | static int context_write_data_local_rtc(Context *c) { |
f401e48c | 186 | int r; |
7fd1b19b | 187 | _cleanup_free_ char *s = NULL, *w = NULL; |
f401e48c | 188 | |
40ca29a1 LP |
189 | assert(c); |
190 | ||
f401e48c LP |
191 | r = read_full_file("/etc/adjtime", &s, NULL); |
192 | if (r < 0) { | |
193 | if (r != -ENOENT) | |
194 | return r; | |
195 | ||
40ca29a1 | 196 | if (!c->local_rtc) |
f401e48c LP |
197 | return 0; |
198 | ||
199 | w = strdup(NULL_ADJTIME_LOCAL); | |
200 | if (!w) | |
201 | return -ENOMEM; | |
202 | } else { | |
203 | char *p, *e; | |
204 | size_t a, b; | |
205 | ||
206 | p = strchr(s, '\n'); | |
d257f05a | 207 | if (!p) |
f401e48c | 208 | return -EIO; |
f401e48c LP |
209 | |
210 | p = strchr(p+1, '\n'); | |
d257f05a | 211 | if (!p) |
f401e48c | 212 | return -EIO; |
f401e48c LP |
213 | |
214 | p++; | |
215 | e = strchr(p, '\n'); | |
d257f05a | 216 | if (!e) |
f401e48c | 217 | return -EIO; |
f401e48c LP |
218 | |
219 | a = p - s; | |
220 | b = strlen(e); | |
221 | ||
40ca29a1 | 222 | w = new(char, a + (c->local_rtc ? 5 : 3) + b + 1); |
d257f05a | 223 | if (!w) |
f401e48c | 224 | return -ENOMEM; |
f401e48c | 225 | |
40ca29a1 | 226 | *(char*) mempcpy(stpcpy(mempcpy(w, s, a), c->local_rtc ? "LOCAL" : "UTC"), e, b) = 0; |
f401e48c LP |
227 | |
228 | if (streq(w, NULL_ADJTIME_UTC)) { | |
d257f05a | 229 | if (unlink("/etc/adjtime") < 0) |
f401e48c LP |
230 | if (errno != ENOENT) |
231 | return -errno; | |
f401e48c LP |
232 | |
233 | return 0; | |
234 | } | |
235 | } | |
40ca29a1 | 236 | |
a5c32cff | 237 | label_init("/etc"); |
d257f05a | 238 | return write_string_file_atomic_label("/etc/adjtime", w); |
f401e48c LP |
239 | } |
240 | ||
ac7019f3 | 241 | static char** get_ntp_services(void) { |
40ca29a1 | 242 | _cleanup_strv_free_ char **r = NULL, **files = NULL; |
d257f05a | 243 | char **i; |
b32d1675 LP |
244 | int k; |
245 | ||
7850b3b8 | 246 | k = conf_files_list(&files, ".list", NULL, |
b32d1675 LP |
247 | "/etc/systemd/ntp-units.d", |
248 | "/run/systemd/ntp-units.d", | |
249 | "/usr/local/lib/systemd/ntp-units.d", | |
250 | "/usr/lib/systemd/ntp-units.d", | |
36f9f995 DR |
251 | #ifdef HAVE_SPLIT_USR |
252 | "/lib/systemd/ntp-units.d", | |
253 | #endif | |
b32d1675 LP |
254 | NULL); |
255 | if (k < 0) | |
ac7019f3 LP |
256 | return NULL; |
257 | ||
b32d1675 | 258 | STRV_FOREACH(i, files) { |
7fd1b19b | 259 | _cleanup_fclose_ FILE *f; |
ac7019f3 | 260 | |
b32d1675 LP |
261 | f = fopen(*i, "re"); |
262 | if (!f) | |
263 | continue; | |
ac7019f3 | 264 | |
b32d1675 | 265 | for (;;) { |
d257f05a | 266 | char line[PATH_MAX], *l; |
ac7019f3 | 267 | |
b32d1675 | 268 | if (!fgets(line, sizeof(line), f)) { |
ac7019f3 | 269 | |
b32d1675 LP |
270 | if (ferror(f)) |
271 | log_error("Failed to read NTP units file: %m"); | |
ac7019f3 | 272 | |
b32d1675 LP |
273 | break; |
274 | } | |
275 | ||
276 | l = strstrip(line); | |
277 | if (l[0] == 0 || l[0] == '#') | |
278 | continue; | |
279 | ||
7e7d4da2 | 280 | if (strv_extend(&r, l) < 0) { |
0d0f0c50 | 281 | log_oom(); |
7e7d4da2 HH |
282 | return NULL; |
283 | } | |
ac7019f3 | 284 | } |
ac7019f3 LP |
285 | } |
286 | ||
d257f05a ZJS |
287 | i = r; |
288 | r = NULL; /* avoid cleanup */ | |
ac7019f3 | 289 | |
d257f05a | 290 | return strv_uniq(i); |
ac7019f3 LP |
291 | } |
292 | ||
40ca29a1 LP |
293 | static int context_read_ntp(Context *c, sd_bus *bus) { |
294 | _cleanup_strv_free_ char **l; | |
295 | char **i; | |
c5f0532f LP |
296 | int r; |
297 | ||
40ca29a1 | 298 | assert(c); |
c5f0532f LP |
299 | assert(bus); |
300 | ||
ac7019f3 LP |
301 | l = get_ntp_services(); |
302 | STRV_FOREACH(i, l) { | |
40ca29a1 LP |
303 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
304 | sd_bus_message *reply = NULL; | |
ac7019f3 LP |
305 | const char *s; |
306 | ||
40ca29a1 LP |
307 | r = sd_bus_call_method( |
308 | bus, | |
ac7019f3 LP |
309 | "org.freedesktop.systemd1", |
310 | "/org/freedesktop/systemd1", | |
311 | "org.freedesktop.systemd1.Manager", | |
40ca29a1 LP |
312 | "GetUnitFileState", |
313 | &error, | |
314 | &reply, | |
315 | "s", | |
316 | *i); | |
c5f0532f | 317 | |
40ca29a1 LP |
318 | if (r < 0) { |
319 | /* This implementation does not exist, try next one */ | |
320 | if (sd_bus_error_has_name(&error, SD_BUS_ERROR_FILE_NOT_FOUND)) | |
ac7019f3 | 321 | continue; |
2aa4c315 | 322 | |
40ca29a1 | 323 | return r; |
2aa4c315 LP |
324 | } |
325 | ||
40ca29a1 LP |
326 | r = sd_bus_message_read(reply, "s", &s); |
327 | if (r < 0) | |
328 | return r; | |
c5f0532f | 329 | |
40ca29a1 LP |
330 | c->can_ntp = 1; |
331 | c->use_ntp = | |
ac7019f3 LP |
332 | streq(s, "enabled") || |
333 | streq(s, "enabled-runtime"); | |
40ca29a1 LP |
334 | |
335 | return 0; | |
c5f0532f LP |
336 | } |
337 | ||
ac7019f3 | 338 | /* NTP is not installed. */ |
40ca29a1 LP |
339 | c->can_ntp = 0; |
340 | c->use_ntp = 0; | |
c5f0532f | 341 | |
40ca29a1 | 342 | return 0; |
c5f0532f LP |
343 | } |
344 | ||
40ca29a1 LP |
345 | static int context_start_ntp(Context *c, sd_bus *bus, sd_bus_error *error) { |
346 | _cleanup_strv_free_ char **l = NULL; | |
347 | char **i; | |
c5f0532f LP |
348 | int r; |
349 | ||
40ca29a1 | 350 | assert(c); |
c5f0532f LP |
351 | assert(bus); |
352 | assert(error); | |
353 | ||
ac7019f3 LP |
354 | l = get_ntp_services(); |
355 | STRV_FOREACH(i, l) { | |
c5f0532f | 356 | |
40ca29a1 LP |
357 | if (c->use_ntp) |
358 | r = sd_bus_call_method( | |
359 | bus, | |
360 | "org.freedesktop.systemd1", | |
361 | "/org/freedesktop/systemd1", | |
362 | "org.freedesktop.systemd1.Manager", | |
363 | "StartUnit", | |
364 | error, | |
365 | NULL, | |
366 | "ss", *i, "replace"); | |
367 | else | |
368 | r = sd_bus_call_method( | |
369 | bus, | |
370 | "org.freedesktop.systemd1", | |
371 | "/org/freedesktop/systemd1", | |
372 | "org.freedesktop.systemd1.Manager", | |
373 | "StopUnit", | |
374 | error, | |
375 | NULL, | |
376 | "ss", *i, "replace"); | |
ac7019f3 | 377 | |
40ca29a1 LP |
378 | if (r < 0) { |
379 | if (sd_bus_error_has_name(error, SD_BUS_ERROR_FILE_NOT_FOUND) || | |
380 | sd_bus_error_has_name(error, "org.freedesktop.systemd1.LoadFailed") || | |
381 | sd_bus_error_has_name(error, "org.freedesktop.systemd1.NoSuchUnit")) { | |
ac7019f3 | 382 | /* This implementation does not exist, try next one */ |
40ca29a1 | 383 | sd_bus_error_free(error); |
ac7019f3 LP |
384 | continue; |
385 | } | |
c5f0532f | 386 | |
40ca29a1 | 387 | return r; |
ac7019f3 LP |
388 | } |
389 | ||
40ca29a1 | 390 | return 1; |
c5f0532f LP |
391 | } |
392 | ||
40ca29a1 LP |
393 | sd_bus_error_set_const(error, "org.freedesktop.timedate1.NoNTPSupport", "NTP not supported."); |
394 | return -ENOTSUP; | |
c5f0532f LP |
395 | } |
396 | ||
40ca29a1 LP |
397 | static int context_enable_ntp(Context*c, sd_bus *bus, sd_bus_error *error) { |
398 | _cleanup_strv_free_ char **l = NULL; | |
399 | char **i; | |
c5f0532f | 400 | int r; |
c5f0532f | 401 | |
40ca29a1 | 402 | assert(c); |
c5f0532f LP |
403 | assert(bus); |
404 | assert(error); | |
405 | ||
ac7019f3 LP |
406 | l = get_ntp_services(); |
407 | STRV_FOREACH(i, l) { | |
40ca29a1 LP |
408 | if (c->use_ntp) |
409 | r = sd_bus_call_method( | |
410 | bus, | |
411 | "org.freedesktop.systemd1", | |
412 | "/org/freedesktop/systemd1", | |
413 | "org.freedesktop.systemd1.Manager", | |
414 | "EnableUnitFiles", | |
415 | error, | |
416 | NULL, | |
417 | "asbb", 1, *i, false, true); | |
418 | else | |
419 | r = sd_bus_call_method( | |
420 | bus, | |
421 | "org.freedesktop.systemd1", | |
422 | "/org/freedesktop/systemd1", | |
423 | "org.freedesktop.systemd1.Manager", | |
424 | "DisableUnitFiles", | |
425 | error, | |
426 | NULL, | |
427 | "asb", 1, *i, false); | |
c5f0532f | 428 | |
ac7019f3 | 429 | if (r < 0) { |
40ca29a1 | 430 | if (sd_bus_error_has_name(error, SD_BUS_ERROR_FILE_NOT_FOUND)) { |
ac7019f3 | 431 | /* This implementation does not exist, try next one */ |
40ca29a1 | 432 | sd_bus_error_free(error); |
ac7019f3 LP |
433 | continue; |
434 | } | |
c5f0532f | 435 | |
40ca29a1 | 436 | return r; |
ac7019f3 LP |
437 | } |
438 | ||
40ca29a1 LP |
439 | r = sd_bus_call_method( |
440 | bus, | |
ac7019f3 LP |
441 | "org.freedesktop.systemd1", |
442 | "/org/freedesktop/systemd1", | |
443 | "org.freedesktop.systemd1.Manager", | |
40ca29a1 LP |
444 | "Reload", |
445 | error, | |
446 | NULL, | |
447 | NULL); | |
448 | if (r < 0) | |
449 | return r; | |
ac7019f3 | 450 | |
40ca29a1 | 451 | return 1; |
c5f0532f LP |
452 | } |
453 | ||
40ca29a1 LP |
454 | sd_bus_error_set_const(error, "org.freedesktop.timedate1.NoNTPSupport", "NTP not supported."); |
455 | return -ENOTSUP; | |
456 | } | |
c5f0532f | 457 | |
6fc60278 LP |
458 | static int property_get_rtc_time( |
459 | sd_bus *bus, | |
460 | const char *path, | |
461 | const char *interface, | |
462 | const char *property, | |
463 | sd_bus_message *reply, | |
464 | sd_bus_error *error, | |
465 | void *userdata) { | |
466 | ||
467 | struct tm tm; | |
468 | usec_t t; | |
469 | int r; | |
470 | ||
471 | zero(tm); | |
472 | r = hwclock_get_time(&tm); | |
88e262b6 LP |
473 | if (r == -EBUSY) { |
474 | log_warning("/dev/rtc is busy, is somebody keeping it open continously? That's not a good idea... Returning a bogus RTC timestamp."); | |
475 | t = 0; | |
476 | } else if (r < 0) { | |
6fc60278 LP |
477 | sd_bus_error_set_errnof(error, -r, "Failed to read RTC: %s", strerror(-r)); |
478 | return r; | |
88e262b6 LP |
479 | } else |
480 | t = (usec_t) mktime(&tm) * USEC_PER_SEC; | |
6fc60278 LP |
481 | |
482 | r = sd_bus_message_append(reply, "t", t); | |
483 | if (r < 0) | |
484 | return r; | |
485 | ||
486 | return 1; | |
487 | } | |
488 | ||
03cc26dd LP |
489 | static int property_get_time( |
490 | sd_bus *bus, | |
491 | const char *path, | |
492 | const char *interface, | |
493 | const char *property, | |
494 | sd_bus_message *reply, | |
495 | sd_bus_error *error, | |
496 | void *userdata) { | |
497 | ||
498 | int r; | |
499 | ||
500 | r = sd_bus_message_append(reply, "t", now(CLOCK_REALTIME)); | |
501 | if (r < 0) | |
502 | return r; | |
503 | ||
504 | return 1; | |
505 | } | |
506 | ||
507 | static int property_get_ntp_sync( | |
508 | sd_bus *bus, | |
509 | const char *path, | |
510 | const char *interface, | |
511 | const char *property, | |
512 | sd_bus_message *reply, | |
513 | sd_bus_error *error, | |
514 | void *userdata) { | |
515 | ||
516 | int r; | |
517 | ||
518 | r = sd_bus_message_append(reply, "b", ntp_synced()); | |
519 | if (r < 0) | |
520 | return r; | |
521 | ||
522 | return 1; | |
523 | } | |
524 | ||
40ca29a1 LP |
525 | static int method_set_timezone(sd_bus *bus, sd_bus_message *m, void *userdata) { |
526 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
527 | Context *c = userdata; | |
528 | const char *z; | |
9bcbce42 | 529 | unsigned interactive; |
40ca29a1 LP |
530 | char *t; |
531 | int r; | |
c5f0532f | 532 | |
7e9cf16c LP |
533 | assert(bus); |
534 | assert(m); | |
535 | assert(c); | |
536 | ||
40ca29a1 LP |
537 | r = sd_bus_message_read(m, "sb", &z, &interactive); |
538 | if (r < 0) | |
539 | return sd_bus_reply_method_errno(bus, m, r, NULL); | |
c5f0532f | 540 | |
40ca29a1 LP |
541 | if (!valid_timezone(z)) |
542 | return sd_bus_reply_method_errorf(bus, m, SD_BUS_ERROR_INVALID_ARGS, "Invalid time zone '%s'", z); | |
ac7019f3 | 543 | |
40ca29a1 LP |
544 | if (streq_ptr(z, c->zone)) |
545 | return sd_bus_reply_method_return(bus, m, NULL); | |
c5f0532f | 546 | |
40ca29a1 LP |
547 | r = bus_verify_polkit_async(bus, &c->polkit_registry, m, "org.freedesktop.timedate1.set-timezone", interactive, &error, method_set_timezone, c); |
548 | if (r < 0) | |
549 | return sd_bus_reply_method_errno(bus, m, r, &error); | |
550 | if (r == 0) | |
6fc60278 | 551 | return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ |
6ffe5e37 | 552 | |
40ca29a1 LP |
553 | t = strdup(z); |
554 | if (!t) | |
555 | return log_oom(); | |
6ffe5e37 | 556 | |
40ca29a1 LP |
557 | free(c->zone); |
558 | c->zone = t; | |
6ffe5e37 | 559 | |
40ca29a1 LP |
560 | /* 1. Write new configuration file */ |
561 | r = context_write_data_timezone(c); | |
562 | if (r < 0) { | |
563 | log_error("Failed to set timezone: %s", strerror(-r)); | |
564 | return sd_bus_reply_method_errnof(bus, m, r, "Failed to set timezone: %s", strerror(-r)); | |
565 | } | |
6ffe5e37 | 566 | |
40ca29a1 LP |
567 | /* 2. Tell the kernel our timezone */ |
568 | hwclock_set_timezone(NULL); | |
6ffe5e37 | 569 | |
40ca29a1 LP |
570 | if (c->local_rtc) { |
571 | struct timespec ts; | |
572 | struct tm *tm; | |
c5f0532f | 573 | |
40ca29a1 LP |
574 | /* 3. Sync RTC from system clock, with the new delta */ |
575 | assert_se(clock_gettime(CLOCK_REALTIME, &ts) == 0); | |
576 | assert_se(tm = localtime(&ts.tv_sec)); | |
577 | hwclock_set_time(tm); | |
578 | } | |
c5f0532f | 579 | |
40ca29a1 LP |
580 | log_struct(LOG_INFO, |
581 | MESSAGE_ID(SD_MESSAGE_TIMEZONE_CHANGE), | |
582 | "TIMEZONE=%s", c->zone, | |
583 | "MESSAGE=Changed timezone to '%s'.", c->zone, | |
584 | NULL); | |
c5f0532f | 585 | |
40ca29a1 | 586 | sd_bus_emit_properties_changed(bus, "/org/freedesktop/timedate1", "org.freedesktop.timedate1", "Timezone", NULL); |
c5f0532f | 587 | |
40ca29a1 | 588 | return sd_bus_reply_method_return(bus, m, NULL); |
c5f0532f LP |
589 | } |
590 | ||
40ca29a1 LP |
591 | static int method_set_local_rtc(sd_bus *bus, sd_bus_message *m, void *userdata) { |
592 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
9bcbce42 | 593 | unsigned lrtc, fix_system, interactive; |
40ca29a1 LP |
594 | Context *c = userdata; |
595 | struct timespec ts; | |
f401e48c LP |
596 | int r; |
597 | ||
40ca29a1 LP |
598 | assert(bus); |
599 | assert(m); | |
600 | assert(c); | |
f401e48c | 601 | |
40ca29a1 LP |
602 | r = sd_bus_message_read(m, "bbb", &lrtc, &fix_system, &interactive); |
603 | if (r < 0) | |
604 | return sd_bus_reply_method_errno(bus, m, r, NULL); | |
f401e48c | 605 | |
40ca29a1 LP |
606 | if (lrtc == c->local_rtc) |
607 | return sd_bus_reply_method_return(bus, m, NULL); | |
f401e48c | 608 | |
40ca29a1 LP |
609 | r = bus_verify_polkit_async(bus, &c->polkit_registry, m, "org.freedesktop.timedate1.set-local-rtc", interactive, &error, method_set_local_rtc, c); |
610 | if (r < 0) | |
611 | return sd_bus_reply_method_errno(bus, m, r, &error); | |
612 | if (r == 0) | |
613 | return 1; | |
f401e48c | 614 | |
40ca29a1 | 615 | c->local_rtc = lrtc; |
f401e48c | 616 | |
40ca29a1 LP |
617 | /* 1. Write new configuration file */ |
618 | r = context_write_data_local_rtc(c); | |
619 | if (r < 0) { | |
620 | log_error("Failed to set RTC to local/UTC: %s", strerror(-r)); | |
621 | return sd_bus_reply_method_errnof(bus, m, r, "Failed to set RTC to local/UTC: %s", strerror(-r)); | |
622 | } | |
f401e48c | 623 | |
40ca29a1 LP |
624 | /* 2. Tell the kernel our timezone */ |
625 | hwclock_set_timezone(NULL); | |
f401e48c | 626 | |
40ca29a1 LP |
627 | /* 3. Synchronize clocks */ |
628 | assert_se(clock_gettime(CLOCK_REALTIME, &ts) == 0); | |
f401e48c | 629 | |
40ca29a1 LP |
630 | if (fix_system) { |
631 | struct tm tm; | |
f401e48c | 632 | |
40ca29a1 LP |
633 | /* Sync system clock from RTC; first, |
634 | * initialize the timezone fields of | |
635 | * struct tm. */ | |
636 | if (c->local_rtc) | |
637 | tm = *localtime(&ts.tv_sec); | |
638 | else | |
639 | tm = *gmtime(&ts.tv_sec); | |
72edcff5 | 640 | |
40ca29a1 LP |
641 | /* Override the main fields of |
642 | * struct tm, but not the timezone | |
643 | * fields */ | |
644 | if (hwclock_get_time(&tm) >= 0) { | |
2076cf88 | 645 | |
40ca29a1 LP |
646 | /* And set the system clock |
647 | * with this */ | |
648 | if (c->local_rtc) | |
649 | ts.tv_sec = mktime(&tm); | |
650 | else | |
651 | ts.tv_sec = timegm(&tm); | |
2076cf88 | 652 | |
40ca29a1 | 653 | clock_settime(CLOCK_REALTIME, &ts); |
f401e48c LP |
654 | } |
655 | ||
40ca29a1 LP |
656 | } else { |
657 | struct tm *tm; | |
f401e48c | 658 | |
40ca29a1 LP |
659 | /* Sync RTC from system clock */ |
660 | if (c->local_rtc) | |
661 | tm = localtime(&ts.tv_sec); | |
662 | else | |
663 | tm = gmtime(&ts.tv_sec); | |
2076cf88 | 664 | |
40ca29a1 LP |
665 | hwclock_set_time(tm); |
666 | } | |
2076cf88 | 667 | |
40ca29a1 | 668 | log_info("RTC configured to %s time.", c->local_rtc ? "local" : "UTC"); |
2076cf88 | 669 | |
40ca29a1 | 670 | sd_bus_emit_properties_changed(bus, "/org/freedesktop/timedate1", "org.freedesktop.timedate1", "LocalRTC", NULL); |
2076cf88 | 671 | |
40ca29a1 LP |
672 | return sd_bus_reply_method_return(bus, m, NULL); |
673 | } | |
2076cf88 | 674 | |
40ca29a1 LP |
675 | static int method_set_time(sd_bus *bus, sd_bus_message *m, void *userdata) { |
676 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
9bcbce42 | 677 | unsigned relative, interactive; |
40ca29a1 LP |
678 | Context *c = userdata; |
679 | int64_t utc; | |
680 | struct timespec ts; | |
681 | struct tm* tm; | |
682 | int r; | |
2076cf88 | 683 | |
40ca29a1 LP |
684 | assert(bus); |
685 | assert(m); | |
686 | assert(c); | |
2076cf88 | 687 | |
40ca29a1 LP |
688 | r = sd_bus_message_read(m, "xbb", &utc, &relative, &interactive); |
689 | if (r < 0) | |
690 | return sd_bus_reply_method_errno(bus, m, r, NULL); | |
2076cf88 | 691 | |
40ca29a1 LP |
692 | if (!relative && utc <= 0) |
693 | return sd_bus_reply_method_errorf(bus, m, SD_BUS_ERROR_INVALID_ARGS, "Invalid absolute time"); | |
2076cf88 | 694 | |
40ca29a1 LP |
695 | if (relative && utc == 0) |
696 | return sd_bus_reply_method_return(bus, m, NULL); | |
2076cf88 | 697 | |
40ca29a1 LP |
698 | if (relative) { |
699 | usec_t n, x; | |
f401e48c | 700 | |
40ca29a1 LP |
701 | n = now(CLOCK_REALTIME); |
702 | x = n + utc; | |
f401e48c | 703 | |
40ca29a1 LP |
704 | if ((utc > 0 && x < n) || |
705 | (utc < 0 && x > n)) | |
706 | return sd_bus_reply_method_errorf(bus, m, SD_BUS_ERROR_INVALID_ARGS, "Time value overflow"); | |
f401e48c | 707 | |
40ca29a1 LP |
708 | timespec_store(&ts, x); |
709 | } else | |
710 | timespec_store(&ts, (usec_t) utc); | |
2076cf88 | 711 | |
40ca29a1 LP |
712 | r = bus_verify_polkit_async(bus, &c->polkit_registry, m, "org.freedesktop.timedate1.set-time", interactive, &error, method_set_time, c); |
713 | if (r < 0) | |
714 | return sd_bus_reply_method_errno(bus, m, r, &error); | |
715 | if (r == 0) | |
716 | return 1; | |
717 | ||
718 | /* Set system clock */ | |
719 | if (clock_settime(CLOCK_REALTIME, &ts) < 0) { | |
720 | log_error("Failed to set local time: %m"); | |
721 | return sd_bus_reply_method_errnof(bus, m, errno, "Failed to set local time: %m"); | |
722 | } | |
2076cf88 | 723 | |
40ca29a1 LP |
724 | /* Sync down to RTC */ |
725 | if (c->local_rtc) | |
726 | tm = localtime(&ts.tv_sec); | |
727 | else | |
728 | tm = gmtime(&ts.tv_sec); | |
f401e48c | 729 | |
40ca29a1 | 730 | hwclock_set_time(tm); |
f401e48c | 731 | |
40ca29a1 LP |
732 | log_struct(LOG_INFO, |
733 | MESSAGE_ID(SD_MESSAGE_TIME_CHANGE), | |
734 | "REALTIME=%llu", (unsigned long long) timespec_load(&ts), | |
735 | "MESSAGE=Changed local time to %s", ctime(&ts.tv_sec), | |
736 | NULL); | |
f401e48c | 737 | |
40ca29a1 LP |
738 | return sd_bus_reply_method_return(bus, m, NULL); |
739 | } | |
f401e48c | 740 | |
40ca29a1 LP |
741 | static int method_set_ntp(sd_bus *bus, sd_bus_message *m, void *userdata) { |
742 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
9bcbce42 | 743 | unsigned ntp, interactive; |
40ca29a1 LP |
744 | Context *c = userdata; |
745 | int r; | |
f401e48c | 746 | |
40ca29a1 LP |
747 | r = sd_bus_message_read(m, "bb", &ntp, &interactive); |
748 | if (r < 0) | |
749 | return sd_bus_reply_method_errno(bus, m, r, NULL); | |
f401e48c | 750 | |
40ca29a1 LP |
751 | if (ntp == c->use_ntp) |
752 | return sd_bus_reply_method_return(bus, m, NULL); | |
f401e48c | 753 | |
40ca29a1 LP |
754 | r = bus_verify_polkit_async(bus, &c->polkit_registry, m, "org.freedesktop.timedate1.set-ntp", interactive, &error, method_set_ntp, c); |
755 | if (r < 0) | |
756 | return sd_bus_reply_method_errno(bus, m, r, &error); | |
757 | if (r == 0) | |
758 | return 1; | |
f401e48c | 759 | |
40ca29a1 | 760 | c->use_ntp = ntp; |
f401e48c | 761 | |
40ca29a1 LP |
762 | r = context_enable_ntp(c, bus, &error); |
763 | if (r < 0) | |
764 | return sd_bus_reply_method_errno(bus, m, r, &error); | |
765 | ||
766 | r = context_start_ntp(c, bus, &error); | |
767 | if (r < 0) | |
768 | return sd_bus_reply_method_errno(bus, m, r, &error); | |
f401e48c | 769 | |
40ca29a1 | 770 | log_info("Set NTP to %s", c->use_ntp ? "enabled" : "disabled"); |
f401e48c | 771 | |
40ca29a1 | 772 | sd_bus_emit_properties_changed(bus, "/org/freedesktop/timedate1", "org.freedesktop.timedate1", "NTP", NULL); |
f401e48c | 773 | |
40ca29a1 | 774 | return sd_bus_reply_method_return(bus, m, NULL); |
f401e48c LP |
775 | } |
776 | ||
40ca29a1 LP |
777 | static const sd_bus_vtable timedate_vtable[] = { |
778 | SD_BUS_VTABLE_START(0), | |
779 | SD_BUS_PROPERTY("Timezone", "s", NULL, offsetof(Context, zone), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), | |
780 | SD_BUS_PROPERTY("LocalRTC", "b", NULL, offsetof(Context, local_rtc), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), | |
781 | SD_BUS_PROPERTY("CanNTP", "b", bus_property_get_tristate, offsetof(Context, can_ntp), 0), | |
782 | SD_BUS_PROPERTY("NTP", "b", bus_property_get_tristate, offsetof(Context, use_ntp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), | |
03cc26dd LP |
783 | SD_BUS_PROPERTY("NTPSynchronized", "b", property_get_ntp_sync, 0, 0), |
784 | SD_BUS_PROPERTY("TimeUSec", "t", property_get_time, 0, 0), | |
6fc60278 | 785 | SD_BUS_PROPERTY("RTCTimeUSec", "t", property_get_rtc_time, 0, 0), |
40ca29a1 LP |
786 | SD_BUS_METHOD("SetTime", "xbb", NULL, method_set_time, 0), |
787 | SD_BUS_METHOD("SetTimezone", "sb", NULL, method_set_timezone, 0), | |
788 | SD_BUS_METHOD("SetLocalRTC", "bbb", NULL, method_set_local_rtc, 0), | |
789 | SD_BUS_METHOD("SetNTP", "bb", NULL, method_set_ntp, 0), | |
790 | SD_BUS_VTABLE_END, | |
791 | }; | |
792 | ||
793 | static int connect_bus(Context *c, sd_event *event, sd_bus **_bus) { | |
794 | _cleanup_bus_unref_ sd_bus *bus = NULL; | |
f401e48c LP |
795 | int r; |
796 | ||
40ca29a1 LP |
797 | assert(c); |
798 | assert(event); | |
f401e48c LP |
799 | assert(_bus); |
800 | ||
40ca29a1 LP |
801 | r = sd_bus_open_system(&bus); |
802 | if (r < 0) { | |
803 | log_error("Failed to get system bus connection: %s", strerror(-r)); | |
804 | return r; | |
f401e48c LP |
805 | } |
806 | ||
40ca29a1 LP |
807 | r = sd_bus_add_object_vtable(bus, "/org/freedesktop/timedate1", "org.freedesktop.timedate1", timedate_vtable, c); |
808 | if (r < 0) { | |
809 | log_error("Failed to register object: %s", strerror(-r)); | |
810 | return r; | |
f401e48c LP |
811 | } |
812 | ||
40ca29a1 LP |
813 | r = sd_bus_request_name(bus, "org.freedesktop.timedate1", SD_BUS_NAME_DO_NOT_QUEUE); |
814 | if (r < 0) { | |
815 | log_error("Failed to register name: %s", strerror(-r)); | |
816 | return r; | |
add10b5a LP |
817 | } |
818 | ||
40ca29a1 | 819 | if (r != SD_BUS_NAME_PRIMARY_OWNER) { |
add10b5a | 820 | log_error("Failed to acquire name."); |
40ca29a1 | 821 | return -EEXIST; |
f401e48c LP |
822 | } |
823 | ||
40ca29a1 LP |
824 | r = sd_bus_attach_event(bus, event, 0); |
825 | if (r < 0) { | |
826 | log_error("Failed to attach bus to event loop: %s", strerror(-r)); | |
827 | return r; | |
828 | } | |
f401e48c | 829 | |
40ca29a1 LP |
830 | *_bus = bus; |
831 | bus = NULL; | |
f401e48c | 832 | |
40ca29a1 | 833 | return 0; |
f401e48c LP |
834 | } |
835 | ||
836 | int main(int argc, char *argv[]) { | |
40ca29a1 LP |
837 | Context context = { |
838 | .zone = NULL, | |
839 | .local_rtc = false, | |
840 | .can_ntp = -1, | |
841 | .use_ntp = -1, | |
842 | }; | |
843 | ||
844 | _cleanup_event_unref_ sd_event *event = NULL; | |
845 | _cleanup_bus_unref_ sd_bus *bus = NULL; | |
f401e48c | 846 | int r; |
f401e48c LP |
847 | |
848 | log_set_target(LOG_TARGET_AUTO); | |
849 | log_parse_environment(); | |
850 | log_open(); | |
851 | ||
4c12626c LP |
852 | umask(0022); |
853 | ||
f401e48c LP |
854 | if (argc != 1) { |
855 | log_error("This program takes no arguments."); | |
856 | r = -EINVAL; | |
857 | goto finish; | |
858 | } | |
859 | ||
40ca29a1 | 860 | r = sd_event_new(&event); |
f401e48c | 861 | if (r < 0) { |
40ca29a1 | 862 | log_error("Failed to allocate event loop: %s", strerror(-r)); |
f401e48c LP |
863 | goto finish; |
864 | } | |
865 | ||
40ca29a1 | 866 | r = connect_bus(&context, event, &bus); |
f401e48c LP |
867 | if (r < 0) |
868 | goto finish; | |
869 | ||
40ca29a1 | 870 | r = context_read_data(&context); |
c5f0532f | 871 | if (r < 0) { |
40ca29a1 | 872 | log_error("Failed to read timezone data: %s", strerror(-r)); |
c5f0532f LP |
873 | goto finish; |
874 | } | |
875 | ||
40ca29a1 LP |
876 | r = context_read_ntp(&context, bus); |
877 | if (r < 0) { | |
878 | log_error("Failed to determine whether NTP is enabled: %s", strerror(-r)); | |
879 | goto finish; | |
880 | } | |
ad740100 | 881 | |
40ca29a1 LP |
882 | r = bus_event_loop_with_idle(event, bus, "org.freedesktop.timedate1", DEFAULT_EXIT_USEC); |
883 | if (r < 0) { | |
884 | log_error("Failed to run event loop: %s", strerror(-r)); | |
885 | goto finish; | |
ad740100 | 886 | } |
f401e48c LP |
887 | |
888 | r = 0; | |
889 | ||
890 | finish: | |
40ca29a1 | 891 | context_free(&context, bus); |
f401e48c LP |
892 | |
893 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
894 | } |