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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", | |
251 | NULL); | |
252 | if (k < 0) | |
ac7019f3 LP |
253 | return NULL; |
254 | ||
b32d1675 | 255 | STRV_FOREACH(i, files) { |
7fd1b19b | 256 | _cleanup_fclose_ FILE *f; |
ac7019f3 | 257 | |
b32d1675 LP |
258 | f = fopen(*i, "re"); |
259 | if (!f) | |
260 | continue; | |
ac7019f3 | 261 | |
b32d1675 | 262 | for (;;) { |
d257f05a | 263 | char line[PATH_MAX], *l; |
ac7019f3 | 264 | |
b32d1675 | 265 | if (!fgets(line, sizeof(line), f)) { |
ac7019f3 | 266 | |
b32d1675 LP |
267 | if (ferror(f)) |
268 | log_error("Failed to read NTP units file: %m"); | |
ac7019f3 | 269 | |
b32d1675 LP |
270 | break; |
271 | } | |
272 | ||
273 | l = strstrip(line); | |
274 | if (l[0] == 0 || l[0] == '#') | |
275 | continue; | |
276 | ||
7e7d4da2 | 277 | if (strv_extend(&r, l) < 0) { |
0d0f0c50 | 278 | log_oom(); |
7e7d4da2 HH |
279 | return NULL; |
280 | } | |
ac7019f3 | 281 | } |
ac7019f3 LP |
282 | } |
283 | ||
d257f05a ZJS |
284 | i = r; |
285 | r = NULL; /* avoid cleanup */ | |
ac7019f3 | 286 | |
d257f05a | 287 | return strv_uniq(i); |
ac7019f3 LP |
288 | } |
289 | ||
40ca29a1 LP |
290 | static int context_read_ntp(Context *c, sd_bus *bus) { |
291 | _cleanup_strv_free_ char **l; | |
292 | char **i; | |
c5f0532f LP |
293 | int r; |
294 | ||
40ca29a1 | 295 | assert(c); |
c5f0532f LP |
296 | assert(bus); |
297 | ||
ac7019f3 LP |
298 | l = get_ntp_services(); |
299 | STRV_FOREACH(i, l) { | |
40ca29a1 LP |
300 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
301 | sd_bus_message *reply = NULL; | |
ac7019f3 LP |
302 | const char *s; |
303 | ||
40ca29a1 LP |
304 | r = sd_bus_call_method( |
305 | bus, | |
ac7019f3 LP |
306 | "org.freedesktop.systemd1", |
307 | "/org/freedesktop/systemd1", | |
308 | "org.freedesktop.systemd1.Manager", | |
40ca29a1 LP |
309 | "GetUnitFileState", |
310 | &error, | |
311 | &reply, | |
312 | "s", | |
313 | *i); | |
c5f0532f | 314 | |
40ca29a1 LP |
315 | if (r < 0) { |
316 | /* This implementation does not exist, try next one */ | |
317 | if (sd_bus_error_has_name(&error, SD_BUS_ERROR_FILE_NOT_FOUND)) | |
ac7019f3 | 318 | continue; |
2aa4c315 | 319 | |
40ca29a1 | 320 | return r; |
2aa4c315 LP |
321 | } |
322 | ||
40ca29a1 LP |
323 | r = sd_bus_message_read(reply, "s", &s); |
324 | if (r < 0) | |
325 | return r; | |
c5f0532f | 326 | |
40ca29a1 LP |
327 | c->can_ntp = 1; |
328 | c->use_ntp = | |
ac7019f3 LP |
329 | streq(s, "enabled") || |
330 | streq(s, "enabled-runtime"); | |
40ca29a1 LP |
331 | |
332 | return 0; | |
c5f0532f LP |
333 | } |
334 | ||
ac7019f3 | 335 | /* NTP is not installed. */ |
40ca29a1 LP |
336 | c->can_ntp = 0; |
337 | c->use_ntp = 0; | |
c5f0532f | 338 | |
40ca29a1 | 339 | return 0; |
c5f0532f LP |
340 | } |
341 | ||
40ca29a1 LP |
342 | static int context_start_ntp(Context *c, sd_bus *bus, sd_bus_error *error) { |
343 | _cleanup_strv_free_ char **l = NULL; | |
344 | char **i; | |
c5f0532f LP |
345 | int r; |
346 | ||
40ca29a1 | 347 | assert(c); |
c5f0532f LP |
348 | assert(bus); |
349 | assert(error); | |
350 | ||
ac7019f3 LP |
351 | l = get_ntp_services(); |
352 | STRV_FOREACH(i, l) { | |
c5f0532f | 353 | |
40ca29a1 LP |
354 | if (c->use_ntp) |
355 | r = sd_bus_call_method( | |
356 | bus, | |
357 | "org.freedesktop.systemd1", | |
358 | "/org/freedesktop/systemd1", | |
359 | "org.freedesktop.systemd1.Manager", | |
360 | "StartUnit", | |
361 | error, | |
362 | NULL, | |
363 | "ss", *i, "replace"); | |
364 | else | |
365 | r = sd_bus_call_method( | |
366 | bus, | |
367 | "org.freedesktop.systemd1", | |
368 | "/org/freedesktop/systemd1", | |
369 | "org.freedesktop.systemd1.Manager", | |
370 | "StopUnit", | |
371 | error, | |
372 | NULL, | |
373 | "ss", *i, "replace"); | |
ac7019f3 | 374 | |
40ca29a1 LP |
375 | if (r < 0) { |
376 | if (sd_bus_error_has_name(error, SD_BUS_ERROR_FILE_NOT_FOUND) || | |
377 | sd_bus_error_has_name(error, "org.freedesktop.systemd1.LoadFailed") || | |
378 | sd_bus_error_has_name(error, "org.freedesktop.systemd1.NoSuchUnit")) { | |
ac7019f3 | 379 | /* This implementation does not exist, try next one */ |
40ca29a1 | 380 | sd_bus_error_free(error); |
ac7019f3 LP |
381 | continue; |
382 | } | |
c5f0532f | 383 | |
40ca29a1 | 384 | return r; |
ac7019f3 LP |
385 | } |
386 | ||
40ca29a1 | 387 | return 1; |
c5f0532f LP |
388 | } |
389 | ||
40ca29a1 LP |
390 | sd_bus_error_set_const(error, "org.freedesktop.timedate1.NoNTPSupport", "NTP not supported."); |
391 | return -ENOTSUP; | |
c5f0532f LP |
392 | } |
393 | ||
40ca29a1 LP |
394 | static int context_enable_ntp(Context*c, sd_bus *bus, sd_bus_error *error) { |
395 | _cleanup_strv_free_ char **l = NULL; | |
396 | char **i; | |
c5f0532f | 397 | int r; |
c5f0532f | 398 | |
40ca29a1 | 399 | assert(c); |
c5f0532f LP |
400 | assert(bus); |
401 | assert(error); | |
402 | ||
ac7019f3 LP |
403 | l = get_ntp_services(); |
404 | STRV_FOREACH(i, l) { | |
40ca29a1 LP |
405 | if (c->use_ntp) |
406 | r = sd_bus_call_method( | |
407 | bus, | |
408 | "org.freedesktop.systemd1", | |
409 | "/org/freedesktop/systemd1", | |
410 | "org.freedesktop.systemd1.Manager", | |
411 | "EnableUnitFiles", | |
412 | error, | |
413 | NULL, | |
414 | "asbb", 1, *i, false, true); | |
415 | else | |
416 | r = sd_bus_call_method( | |
417 | bus, | |
418 | "org.freedesktop.systemd1", | |
419 | "/org/freedesktop/systemd1", | |
420 | "org.freedesktop.systemd1.Manager", | |
421 | "DisableUnitFiles", | |
422 | error, | |
423 | NULL, | |
424 | "asb", 1, *i, false); | |
c5f0532f | 425 | |
ac7019f3 | 426 | if (r < 0) { |
40ca29a1 | 427 | if (sd_bus_error_has_name(error, SD_BUS_ERROR_FILE_NOT_FOUND)) { |
ac7019f3 | 428 | /* This implementation does not exist, try next one */ |
40ca29a1 | 429 | sd_bus_error_free(error); |
ac7019f3 LP |
430 | continue; |
431 | } | |
c5f0532f | 432 | |
40ca29a1 | 433 | return r; |
ac7019f3 LP |
434 | } |
435 | ||
40ca29a1 LP |
436 | r = sd_bus_call_method( |
437 | bus, | |
ac7019f3 LP |
438 | "org.freedesktop.systemd1", |
439 | "/org/freedesktop/systemd1", | |
440 | "org.freedesktop.systemd1.Manager", | |
40ca29a1 LP |
441 | "Reload", |
442 | error, | |
443 | NULL, | |
444 | NULL); | |
445 | if (r < 0) | |
446 | return r; | |
ac7019f3 | 447 | |
40ca29a1 | 448 | return 1; |
c5f0532f LP |
449 | } |
450 | ||
40ca29a1 LP |
451 | sd_bus_error_set_const(error, "org.freedesktop.timedate1.NoNTPSupport", "NTP not supported."); |
452 | return -ENOTSUP; | |
453 | } | |
c5f0532f | 454 | |
6fc60278 LP |
455 | static int property_get_rtc_time( |
456 | sd_bus *bus, | |
457 | const char *path, | |
458 | const char *interface, | |
459 | const char *property, | |
460 | sd_bus_message *reply, | |
461 | sd_bus_error *error, | |
462 | void *userdata) { | |
463 | ||
464 | struct tm tm; | |
465 | usec_t t; | |
466 | int r; | |
467 | ||
468 | zero(tm); | |
469 | r = hwclock_get_time(&tm); | |
470 | if (r < 0) { | |
471 | sd_bus_error_set_errnof(error, -r, "Failed to read RTC: %s", strerror(-r)); | |
472 | return r; | |
473 | } | |
474 | ||
475 | t = (usec_t) mktime(&tm) * USEC_PER_SEC; | |
476 | ||
477 | r = sd_bus_message_append(reply, "t", t); | |
478 | if (r < 0) | |
479 | return r; | |
480 | ||
481 | return 1; | |
482 | } | |
483 | ||
03cc26dd LP |
484 | static int property_get_time( |
485 | sd_bus *bus, | |
486 | const char *path, | |
487 | const char *interface, | |
488 | const char *property, | |
489 | sd_bus_message *reply, | |
490 | sd_bus_error *error, | |
491 | void *userdata) { | |
492 | ||
493 | int r; | |
494 | ||
495 | r = sd_bus_message_append(reply, "t", now(CLOCK_REALTIME)); | |
496 | if (r < 0) | |
497 | return r; | |
498 | ||
499 | return 1; | |
500 | } | |
501 | ||
502 | static int property_get_ntp_sync( | |
503 | sd_bus *bus, | |
504 | const char *path, | |
505 | const char *interface, | |
506 | const char *property, | |
507 | sd_bus_message *reply, | |
508 | sd_bus_error *error, | |
509 | void *userdata) { | |
510 | ||
511 | int r; | |
512 | ||
513 | r = sd_bus_message_append(reply, "b", ntp_synced()); | |
514 | if (r < 0) | |
515 | return r; | |
516 | ||
517 | return 1; | |
518 | } | |
519 | ||
40ca29a1 LP |
520 | static int method_set_timezone(sd_bus *bus, sd_bus_message *m, void *userdata) { |
521 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
522 | Context *c = userdata; | |
523 | const char *z; | |
9bcbce42 | 524 | unsigned interactive; |
40ca29a1 LP |
525 | char *t; |
526 | int r; | |
c5f0532f | 527 | |
7e9cf16c LP |
528 | assert(bus); |
529 | assert(m); | |
530 | assert(c); | |
531 | ||
40ca29a1 LP |
532 | r = sd_bus_message_read(m, "sb", &z, &interactive); |
533 | if (r < 0) | |
534 | return sd_bus_reply_method_errno(bus, m, r, NULL); | |
c5f0532f | 535 | |
40ca29a1 LP |
536 | if (!valid_timezone(z)) |
537 | return sd_bus_reply_method_errorf(bus, m, SD_BUS_ERROR_INVALID_ARGS, "Invalid time zone '%s'", z); | |
ac7019f3 | 538 | |
40ca29a1 LP |
539 | if (streq_ptr(z, c->zone)) |
540 | return sd_bus_reply_method_return(bus, m, NULL); | |
c5f0532f | 541 | |
40ca29a1 LP |
542 | r = bus_verify_polkit_async(bus, &c->polkit_registry, m, "org.freedesktop.timedate1.set-timezone", interactive, &error, method_set_timezone, c); |
543 | if (r < 0) | |
544 | return sd_bus_reply_method_errno(bus, m, r, &error); | |
545 | if (r == 0) | |
6fc60278 | 546 | return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ |
6ffe5e37 | 547 | |
40ca29a1 LP |
548 | t = strdup(z); |
549 | if (!t) | |
550 | return log_oom(); | |
6ffe5e37 | 551 | |
40ca29a1 LP |
552 | free(c->zone); |
553 | c->zone = t; | |
6ffe5e37 | 554 | |
40ca29a1 LP |
555 | /* 1. Write new configuration file */ |
556 | r = context_write_data_timezone(c); | |
557 | if (r < 0) { | |
558 | log_error("Failed to set timezone: %s", strerror(-r)); | |
559 | return sd_bus_reply_method_errnof(bus, m, r, "Failed to set timezone: %s", strerror(-r)); | |
560 | } | |
6ffe5e37 | 561 | |
40ca29a1 LP |
562 | /* 2. Tell the kernel our timezone */ |
563 | hwclock_set_timezone(NULL); | |
6ffe5e37 | 564 | |
40ca29a1 LP |
565 | if (c->local_rtc) { |
566 | struct timespec ts; | |
567 | struct tm *tm; | |
c5f0532f | 568 | |
40ca29a1 LP |
569 | /* 3. Sync RTC from system clock, with the new delta */ |
570 | assert_se(clock_gettime(CLOCK_REALTIME, &ts) == 0); | |
571 | assert_se(tm = localtime(&ts.tv_sec)); | |
572 | hwclock_set_time(tm); | |
573 | } | |
c5f0532f | 574 | |
40ca29a1 LP |
575 | log_struct(LOG_INFO, |
576 | MESSAGE_ID(SD_MESSAGE_TIMEZONE_CHANGE), | |
577 | "TIMEZONE=%s", c->zone, | |
578 | "MESSAGE=Changed timezone to '%s'.", c->zone, | |
579 | NULL); | |
c5f0532f | 580 | |
40ca29a1 | 581 | sd_bus_emit_properties_changed(bus, "/org/freedesktop/timedate1", "org.freedesktop.timedate1", "Timezone", NULL); |
c5f0532f | 582 | |
40ca29a1 | 583 | return sd_bus_reply_method_return(bus, m, NULL); |
c5f0532f LP |
584 | } |
585 | ||
40ca29a1 LP |
586 | static int method_set_local_rtc(sd_bus *bus, sd_bus_message *m, void *userdata) { |
587 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
9bcbce42 | 588 | unsigned lrtc, fix_system, interactive; |
40ca29a1 LP |
589 | Context *c = userdata; |
590 | struct timespec ts; | |
f401e48c LP |
591 | int r; |
592 | ||
40ca29a1 LP |
593 | assert(bus); |
594 | assert(m); | |
595 | assert(c); | |
f401e48c | 596 | |
40ca29a1 LP |
597 | r = sd_bus_message_read(m, "bbb", &lrtc, &fix_system, &interactive); |
598 | if (r < 0) | |
599 | return sd_bus_reply_method_errno(bus, m, r, NULL); | |
f401e48c | 600 | |
40ca29a1 LP |
601 | if (lrtc == c->local_rtc) |
602 | return sd_bus_reply_method_return(bus, m, NULL); | |
f401e48c | 603 | |
40ca29a1 LP |
604 | r = bus_verify_polkit_async(bus, &c->polkit_registry, m, "org.freedesktop.timedate1.set-local-rtc", interactive, &error, method_set_local_rtc, c); |
605 | if (r < 0) | |
606 | return sd_bus_reply_method_errno(bus, m, r, &error); | |
607 | if (r == 0) | |
608 | return 1; | |
f401e48c | 609 | |
40ca29a1 | 610 | c->local_rtc = lrtc; |
f401e48c | 611 | |
40ca29a1 LP |
612 | /* 1. Write new configuration file */ |
613 | r = context_write_data_local_rtc(c); | |
614 | if (r < 0) { | |
615 | log_error("Failed to set RTC to local/UTC: %s", strerror(-r)); | |
616 | return sd_bus_reply_method_errnof(bus, m, r, "Failed to set RTC to local/UTC: %s", strerror(-r)); | |
617 | } | |
f401e48c | 618 | |
40ca29a1 LP |
619 | /* 2. Tell the kernel our timezone */ |
620 | hwclock_set_timezone(NULL); | |
f401e48c | 621 | |
40ca29a1 LP |
622 | /* 3. Synchronize clocks */ |
623 | assert_se(clock_gettime(CLOCK_REALTIME, &ts) == 0); | |
f401e48c | 624 | |
40ca29a1 LP |
625 | if (fix_system) { |
626 | struct tm tm; | |
f401e48c | 627 | |
40ca29a1 LP |
628 | /* Sync system clock from RTC; first, |
629 | * initialize the timezone fields of | |
630 | * struct tm. */ | |
631 | if (c->local_rtc) | |
632 | tm = *localtime(&ts.tv_sec); | |
633 | else | |
634 | tm = *gmtime(&ts.tv_sec); | |
72edcff5 | 635 | |
40ca29a1 LP |
636 | /* Override the main fields of |
637 | * struct tm, but not the timezone | |
638 | * fields */ | |
639 | if (hwclock_get_time(&tm) >= 0) { | |
2076cf88 | 640 | |
40ca29a1 LP |
641 | /* And set the system clock |
642 | * with this */ | |
643 | if (c->local_rtc) | |
644 | ts.tv_sec = mktime(&tm); | |
645 | else | |
646 | ts.tv_sec = timegm(&tm); | |
2076cf88 | 647 | |
40ca29a1 | 648 | clock_settime(CLOCK_REALTIME, &ts); |
f401e48c LP |
649 | } |
650 | ||
40ca29a1 LP |
651 | } else { |
652 | struct tm *tm; | |
f401e48c | 653 | |
40ca29a1 LP |
654 | /* Sync RTC from system clock */ |
655 | if (c->local_rtc) | |
656 | tm = localtime(&ts.tv_sec); | |
657 | else | |
658 | tm = gmtime(&ts.tv_sec); | |
2076cf88 | 659 | |
40ca29a1 LP |
660 | hwclock_set_time(tm); |
661 | } | |
2076cf88 | 662 | |
40ca29a1 | 663 | log_info("RTC configured to %s time.", c->local_rtc ? "local" : "UTC"); |
2076cf88 | 664 | |
40ca29a1 | 665 | sd_bus_emit_properties_changed(bus, "/org/freedesktop/timedate1", "org.freedesktop.timedate1", "LocalRTC", NULL); |
2076cf88 | 666 | |
40ca29a1 LP |
667 | return sd_bus_reply_method_return(bus, m, NULL); |
668 | } | |
2076cf88 | 669 | |
40ca29a1 LP |
670 | static int method_set_time(sd_bus *bus, sd_bus_message *m, void *userdata) { |
671 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
9bcbce42 | 672 | unsigned relative, interactive; |
40ca29a1 LP |
673 | Context *c = userdata; |
674 | int64_t utc; | |
675 | struct timespec ts; | |
676 | struct tm* tm; | |
677 | int r; | |
2076cf88 | 678 | |
40ca29a1 LP |
679 | assert(bus); |
680 | assert(m); | |
681 | assert(c); | |
2076cf88 | 682 | |
40ca29a1 LP |
683 | r = sd_bus_message_read(m, "xbb", &utc, &relative, &interactive); |
684 | if (r < 0) | |
685 | return sd_bus_reply_method_errno(bus, m, r, NULL); | |
2076cf88 | 686 | |
40ca29a1 LP |
687 | if (!relative && utc <= 0) |
688 | return sd_bus_reply_method_errorf(bus, m, SD_BUS_ERROR_INVALID_ARGS, "Invalid absolute time"); | |
2076cf88 | 689 | |
40ca29a1 LP |
690 | if (relative && utc == 0) |
691 | return sd_bus_reply_method_return(bus, m, NULL); | |
2076cf88 | 692 | |
40ca29a1 LP |
693 | if (relative) { |
694 | usec_t n, x; | |
f401e48c | 695 | |
40ca29a1 LP |
696 | n = now(CLOCK_REALTIME); |
697 | x = n + utc; | |
f401e48c | 698 | |
40ca29a1 LP |
699 | if ((utc > 0 && x < n) || |
700 | (utc < 0 && x > n)) | |
701 | return sd_bus_reply_method_errorf(bus, m, SD_BUS_ERROR_INVALID_ARGS, "Time value overflow"); | |
f401e48c | 702 | |
40ca29a1 LP |
703 | timespec_store(&ts, x); |
704 | } else | |
705 | timespec_store(&ts, (usec_t) utc); | |
2076cf88 | 706 | |
40ca29a1 LP |
707 | r = bus_verify_polkit_async(bus, &c->polkit_registry, m, "org.freedesktop.timedate1.set-time", interactive, &error, method_set_time, c); |
708 | if (r < 0) | |
709 | return sd_bus_reply_method_errno(bus, m, r, &error); | |
710 | if (r == 0) | |
711 | return 1; | |
712 | ||
713 | /* Set system clock */ | |
714 | if (clock_settime(CLOCK_REALTIME, &ts) < 0) { | |
715 | log_error("Failed to set local time: %m"); | |
716 | return sd_bus_reply_method_errnof(bus, m, errno, "Failed to set local time: %m"); | |
717 | } | |
2076cf88 | 718 | |
40ca29a1 LP |
719 | /* Sync down to RTC */ |
720 | if (c->local_rtc) | |
721 | tm = localtime(&ts.tv_sec); | |
722 | else | |
723 | tm = gmtime(&ts.tv_sec); | |
f401e48c | 724 | |
40ca29a1 | 725 | hwclock_set_time(tm); |
f401e48c | 726 | |
40ca29a1 LP |
727 | log_struct(LOG_INFO, |
728 | MESSAGE_ID(SD_MESSAGE_TIME_CHANGE), | |
729 | "REALTIME=%llu", (unsigned long long) timespec_load(&ts), | |
730 | "MESSAGE=Changed local time to %s", ctime(&ts.tv_sec), | |
731 | NULL); | |
f401e48c | 732 | |
40ca29a1 LP |
733 | return sd_bus_reply_method_return(bus, m, NULL); |
734 | } | |
f401e48c | 735 | |
40ca29a1 LP |
736 | static int method_set_ntp(sd_bus *bus, sd_bus_message *m, void *userdata) { |
737 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
9bcbce42 | 738 | unsigned ntp, interactive; |
40ca29a1 LP |
739 | Context *c = userdata; |
740 | int r; | |
f401e48c | 741 | |
40ca29a1 LP |
742 | r = sd_bus_message_read(m, "bb", &ntp, &interactive); |
743 | if (r < 0) | |
744 | return sd_bus_reply_method_errno(bus, m, r, NULL); | |
f401e48c | 745 | |
40ca29a1 LP |
746 | if (ntp == c->use_ntp) |
747 | return sd_bus_reply_method_return(bus, m, NULL); | |
f401e48c | 748 | |
40ca29a1 LP |
749 | r = bus_verify_polkit_async(bus, &c->polkit_registry, m, "org.freedesktop.timedate1.set-ntp", interactive, &error, method_set_ntp, c); |
750 | if (r < 0) | |
751 | return sd_bus_reply_method_errno(bus, m, r, &error); | |
752 | if (r == 0) | |
753 | return 1; | |
f401e48c | 754 | |
40ca29a1 | 755 | c->use_ntp = ntp; |
f401e48c | 756 | |
40ca29a1 LP |
757 | r = context_enable_ntp(c, bus, &error); |
758 | if (r < 0) | |
759 | return sd_bus_reply_method_errno(bus, m, r, &error); | |
760 | ||
761 | r = context_start_ntp(c, bus, &error); | |
762 | if (r < 0) | |
763 | return sd_bus_reply_method_errno(bus, m, r, &error); | |
f401e48c | 764 | |
40ca29a1 | 765 | log_info("Set NTP to %s", c->use_ntp ? "enabled" : "disabled"); |
f401e48c | 766 | |
40ca29a1 | 767 | sd_bus_emit_properties_changed(bus, "/org/freedesktop/timedate1", "org.freedesktop.timedate1", "NTP", NULL); |
f401e48c | 768 | |
40ca29a1 | 769 | return sd_bus_reply_method_return(bus, m, NULL); |
f401e48c LP |
770 | } |
771 | ||
40ca29a1 LP |
772 | static const sd_bus_vtable timedate_vtable[] = { |
773 | SD_BUS_VTABLE_START(0), | |
774 | SD_BUS_PROPERTY("Timezone", "s", NULL, offsetof(Context, zone), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), | |
775 | SD_BUS_PROPERTY("LocalRTC", "b", NULL, offsetof(Context, local_rtc), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), | |
776 | SD_BUS_PROPERTY("CanNTP", "b", bus_property_get_tristate, offsetof(Context, can_ntp), 0), | |
777 | SD_BUS_PROPERTY("NTP", "b", bus_property_get_tristate, offsetof(Context, use_ntp), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), | |
03cc26dd LP |
778 | SD_BUS_PROPERTY("NTPSynchronized", "b", property_get_ntp_sync, 0, 0), |
779 | SD_BUS_PROPERTY("TimeUSec", "t", property_get_time, 0, 0), | |
6fc60278 | 780 | SD_BUS_PROPERTY("RTCTimeUSec", "t", property_get_rtc_time, 0, 0), |
40ca29a1 LP |
781 | SD_BUS_METHOD("SetTime", "xbb", NULL, method_set_time, 0), |
782 | SD_BUS_METHOD("SetTimezone", "sb", NULL, method_set_timezone, 0), | |
783 | SD_BUS_METHOD("SetLocalRTC", "bbb", NULL, method_set_local_rtc, 0), | |
784 | SD_BUS_METHOD("SetNTP", "bb", NULL, method_set_ntp, 0), | |
785 | SD_BUS_VTABLE_END, | |
786 | }; | |
787 | ||
788 | static int connect_bus(Context *c, sd_event *event, sd_bus **_bus) { | |
789 | _cleanup_bus_unref_ sd_bus *bus = NULL; | |
f401e48c LP |
790 | int r; |
791 | ||
40ca29a1 LP |
792 | assert(c); |
793 | assert(event); | |
f401e48c LP |
794 | assert(_bus); |
795 | ||
40ca29a1 LP |
796 | r = sd_bus_open_system(&bus); |
797 | if (r < 0) { | |
798 | log_error("Failed to get system bus connection: %s", strerror(-r)); | |
799 | return r; | |
f401e48c LP |
800 | } |
801 | ||
40ca29a1 LP |
802 | r = sd_bus_add_object_vtable(bus, "/org/freedesktop/timedate1", "org.freedesktop.timedate1", timedate_vtable, c); |
803 | if (r < 0) { | |
804 | log_error("Failed to register object: %s", strerror(-r)); | |
805 | return r; | |
f401e48c LP |
806 | } |
807 | ||
40ca29a1 LP |
808 | r = sd_bus_request_name(bus, "org.freedesktop.timedate1", SD_BUS_NAME_DO_NOT_QUEUE); |
809 | if (r < 0) { | |
810 | log_error("Failed to register name: %s", strerror(-r)); | |
811 | return r; | |
add10b5a LP |
812 | } |
813 | ||
40ca29a1 | 814 | if (r != SD_BUS_NAME_PRIMARY_OWNER) { |
add10b5a | 815 | log_error("Failed to acquire name."); |
40ca29a1 | 816 | return -EEXIST; |
f401e48c LP |
817 | } |
818 | ||
40ca29a1 LP |
819 | r = sd_bus_attach_event(bus, event, 0); |
820 | if (r < 0) { | |
821 | log_error("Failed to attach bus to event loop: %s", strerror(-r)); | |
822 | return r; | |
823 | } | |
f401e48c | 824 | |
40ca29a1 LP |
825 | *_bus = bus; |
826 | bus = NULL; | |
f401e48c | 827 | |
40ca29a1 | 828 | return 0; |
f401e48c LP |
829 | } |
830 | ||
831 | int main(int argc, char *argv[]) { | |
40ca29a1 LP |
832 | Context context = { |
833 | .zone = NULL, | |
834 | .local_rtc = false, | |
835 | .can_ntp = -1, | |
836 | .use_ntp = -1, | |
837 | }; | |
838 | ||
839 | _cleanup_event_unref_ sd_event *event = NULL; | |
840 | _cleanup_bus_unref_ sd_bus *bus = NULL; | |
f401e48c | 841 | int r; |
f401e48c LP |
842 | |
843 | log_set_target(LOG_TARGET_AUTO); | |
844 | log_parse_environment(); | |
845 | log_open(); | |
846 | ||
4c12626c LP |
847 | umask(0022); |
848 | ||
f401e48c LP |
849 | if (argc != 1) { |
850 | log_error("This program takes no arguments."); | |
851 | r = -EINVAL; | |
852 | goto finish; | |
853 | } | |
854 | ||
40ca29a1 | 855 | r = sd_event_new(&event); |
f401e48c | 856 | if (r < 0) { |
40ca29a1 | 857 | log_error("Failed to allocate event loop: %s", strerror(-r)); |
f401e48c LP |
858 | goto finish; |
859 | } | |
860 | ||
40ca29a1 | 861 | r = connect_bus(&context, event, &bus); |
f401e48c LP |
862 | if (r < 0) |
863 | goto finish; | |
864 | ||
40ca29a1 | 865 | r = context_read_data(&context); |
c5f0532f | 866 | if (r < 0) { |
40ca29a1 | 867 | log_error("Failed to read timezone data: %s", strerror(-r)); |
c5f0532f LP |
868 | goto finish; |
869 | } | |
870 | ||
40ca29a1 LP |
871 | r = context_read_ntp(&context, bus); |
872 | if (r < 0) { | |
873 | log_error("Failed to determine whether NTP is enabled: %s", strerror(-r)); | |
874 | goto finish; | |
875 | } | |
ad740100 | 876 | |
40ca29a1 LP |
877 | r = bus_event_loop_with_idle(event, bus, "org.freedesktop.timedate1", DEFAULT_EXIT_USEC); |
878 | if (r < 0) { | |
879 | log_error("Failed to run event loop: %s", strerror(-r)); | |
880 | goto finish; | |
ad740100 | 881 | } |
f401e48c LP |
882 | |
883 | r = 0; | |
884 | ||
885 | finish: | |
40ca29a1 | 886 | context_free(&context, bus); |
f401e48c LP |
887 | |
888 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
889 | } |