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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 | ||
22 | #include <dbus/dbus.h> | |
23 | ||
24 | #include <errno.h> | |
25 | #include <string.h> | |
26 | #include <unistd.h> | |
27 | ||
28 | #include "util.h" | |
29 | #include "strv.h" | |
30 | #include "dbus-common.h" | |
31 | #include "polkit.h" | |
ad740100 | 32 | #include "def.h" |
bbc98d32 | 33 | #include "hwclock.h" |
b32d1675 | 34 | #include "conf-files.h" |
f401e48c LP |
35 | |
36 | #define NULL_ADJTIME_UTC "0.0 0 0\n0\nUTC\n" | |
37 | #define NULL_ADJTIME_LOCAL "0.0 0 0\n0\nLOCAL\n" | |
38 | ||
91f9dcaf | 39 | #define INTERFACE \ |
f401e48c LP |
40 | " <interface name=\"org.freedesktop.timedate1\">\n" \ |
41 | " <property name=\"Timezone\" type=\"s\" access=\"read\"/>\n" \ | |
42 | " <property name=\"LocalRTC\" type=\"b\" access=\"read\"/>\n" \ | |
c5f0532f | 43 | " <property name=\"NTP\" type=\"b\" access=\"read\"/>\n" \ |
f401e48c LP |
44 | " <method name=\"SetTime\">\n" \ |
45 | " <arg name=\"usec_utc\" type=\"x\" direction=\"in\"/>\n" \ | |
46 | " <arg name=\"relative\" type=\"b\" direction=\"in\"/>\n" \ | |
47 | " <arg name=\"user_interaction\" type=\"b\" direction=\"in\"/>\n" \ | |
48 | " </method>\n" \ | |
49 | " <method name=\"SetTimezone\">\n" \ | |
50 | " <arg name=\"timezone\" type=\"s\" direction=\"in\"/>\n" \ | |
51 | " <arg name=\"user_interaction\" type=\"b\" direction=\"in\"/>\n" \ | |
52 | " </method>\n" \ | |
53 | " <method name=\"SetLocalRTC\">\n" \ | |
54 | " <arg name=\"local_rtc\" type=\"b\" direction=\"in\"/>\n" \ | |
91f9dcaf | 55 | " <arg name=\"fix_system\" type=\"b\" direction=\"in\"/>\n" \ |
f401e48c LP |
56 | " <arg name=\"user_interaction\" type=\"b\" direction=\"in\"/>\n" \ |
57 | " </method>\n" \ | |
c5f0532f LP |
58 | " <method name=\"SetNTP\">\n" \ |
59 | " <arg name=\"use_ntp\" type=\"b\" direction=\"in\"/>\n" \ | |
60 | " <arg name=\"user_interaction\" type=\"b\" direction=\"in\"/>\n" \ | |
61 | " </method>\n" \ | |
91f9dcaf LP |
62 | " </interface>\n" |
63 | ||
64 | #define INTROSPECTION \ | |
65 | DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \ | |
66 | "<node>\n" \ | |
67 | INTERFACE \ | |
f401e48c LP |
68 | BUS_PROPERTIES_INTERFACE \ |
69 | BUS_INTROSPECTABLE_INTERFACE \ | |
70 | BUS_PEER_INTERFACE \ | |
71 | "</node>\n" | |
72 | ||
73 | #define INTERFACES_LIST \ | |
74 | BUS_GENERIC_INTERFACES_LIST \ | |
3417e2c3 | 75 | "org.freedesktop.timedate1\0" |
f401e48c | 76 | |
91f9dcaf LP |
77 | const char timedate_interface[] _introspect_("timedate1") = INTERFACE; |
78 | ||
d200735e MS |
79 | typedef struct TZ { |
80 | char *zone; | |
81 | bool local_rtc; | |
82 | int use_ntp; | |
83 | } TZ; | |
f401e48c | 84 | |
d200735e MS |
85 | static TZ tz = { |
86 | .use_ntp = -1, | |
87 | }; | |
88 | ||
89 | static usec_t remain_until; | |
ad740100 | 90 | |
f401e48c | 91 | static void free_data(void) { |
d200735e MS |
92 | free(tz.zone); |
93 | tz.zone = NULL; | |
f401e48c | 94 | |
d200735e | 95 | tz.local_rtc = false; |
f401e48c LP |
96 | } |
97 | ||
98 | static bool valid_timezone(const char *name) { | |
99 | const char *p; | |
100 | char *t; | |
101 | bool slash = false; | |
102 | int r; | |
103 | struct stat st; | |
104 | ||
105 | assert(name); | |
106 | ||
107 | if (*name == '/' || *name == 0) | |
108 | return false; | |
109 | ||
110 | for (p = name; *p; p++) { | |
111 | if (!(*p >= '0' && *p <= '9') && | |
112 | !(*p >= 'a' && *p <= 'z') && | |
113 | !(*p >= 'A' && *p <= 'Z') && | |
114 | !(*p == '-' || *p == '_' || *p == '+' || *p == '/')) | |
115 | return false; | |
116 | ||
117 | if (*p == '/') { | |
118 | ||
119 | if (slash) | |
120 | return false; | |
121 | ||
122 | slash = true; | |
123 | } else | |
124 | slash = false; | |
125 | } | |
126 | ||
127 | if (slash) | |
128 | return false; | |
129 | ||
130 | t = strappend("/usr/share/zoneinfo/", name); | |
131 | if (!t) | |
132 | return false; | |
133 | ||
134 | r = stat(t, &st); | |
135 | free(t); | |
136 | ||
137 | if (r < 0) | |
138 | return false; | |
139 | ||
140 | if (!S_ISREG(st.st_mode)) | |
141 | return false; | |
142 | ||
143 | return true; | |
144 | } | |
145 | ||
146 | static void verify_timezone(void) { | |
147 | char *p, *a = NULL, *b = NULL; | |
148 | size_t l, q; | |
149 | int j, k; | |
150 | ||
d200735e | 151 | if (!tz.zone) |
f401e48c LP |
152 | return; |
153 | ||
d200735e | 154 | p = strappend("/usr/share/zoneinfo/", tz.zone); |
f401e48c | 155 | if (!p) { |
669241a0 | 156 | log_error("Out of memory."); |
f401e48c LP |
157 | return; |
158 | } | |
159 | ||
160 | j = read_full_file("/etc/localtime", &a, &l); | |
161 | k = read_full_file(p, &b, &q); | |
162 | ||
163 | free(p); | |
164 | ||
165 | if (j < 0 || k < 0 || l != q || memcmp(a, b, l)) { | |
166 | log_warning("/etc/localtime and /etc/timezone out of sync."); | |
d200735e MS |
167 | free(tz.zone); |
168 | tz.zone = NULL; | |
f401e48c LP |
169 | } |
170 | ||
171 | free(a); | |
172 | free(b); | |
173 | } | |
174 | ||
175 | static int read_data(void) { | |
176 | int r; | |
f401e48c LP |
177 | |
178 | free_data(); | |
179 | ||
d200735e | 180 | r = read_one_line_file("/etc/timezone", &tz.zone); |
a724d2ed LP |
181 | if (r < 0) { |
182 | if (r != -ENOENT) | |
183 | log_warning("Failed to read /etc/timezone: %s", strerror(-r)); | |
184 | ||
185 | #ifdef TARGET_FEDORA | |
186 | r = parse_env_file("/etc/sysconfig/clock", NEWLINE, | |
d200735e | 187 | "ZONE", &tz.zone, |
a724d2ed LP |
188 | NULL); |
189 | ||
190 | if (r < 0 && r != -ENOENT) | |
191 | log_warning("Failed to read /etc/sysconfig/clock: %s", strerror(-r)); | |
192 | #endif | |
193 | } | |
194 | ||
d200735e MS |
195 | if (isempty(tz.zone)) { |
196 | free(tz.zone); | |
197 | tz.zone = NULL; | |
a724d2ed | 198 | } |
f401e48c LP |
199 | |
200 | verify_timezone(); | |
201 | ||
d200735e | 202 | tz.local_rtc = hwclock_is_localtime() > 0; |
f401e48c LP |
203 | |
204 | return 0; | |
205 | } | |
206 | ||
207 | static int write_data_timezone(void) { | |
208 | int r = 0; | |
209 | char *p; | |
210 | ||
d200735e | 211 | if (!tz.zone) { |
f401e48c LP |
212 | if (unlink("/etc/timezone") < 0 && errno != ENOENT) |
213 | r = -errno; | |
214 | ||
215 | if (unlink("/etc/localtime") < 0 && errno != ENOENT) | |
216 | r = -errno; | |
217 | ||
218 | return r; | |
219 | } | |
220 | ||
d200735e | 221 | p = strappend("/usr/share/zoneinfo/", tz.zone); |
f401e48c | 222 | if (!p) { |
669241a0 | 223 | log_error("Out of memory."); |
f401e48c LP |
224 | return -ENOMEM; |
225 | } | |
226 | ||
227 | r = symlink_or_copy_atomic(p, "/etc/localtime"); | |
228 | free(p); | |
229 | ||
230 | if (r < 0) | |
231 | return r; | |
232 | ||
d200735e | 233 | r = write_one_line_file_atomic("/etc/timezone", tz.zone); |
f401e48c LP |
234 | if (r < 0) |
235 | return r; | |
236 | ||
237 | return 0; | |
238 | } | |
239 | ||
240 | static int write_data_local_rtc(void) { | |
241 | int r; | |
242 | char *s, *w; | |
243 | ||
244 | r = read_full_file("/etc/adjtime", &s, NULL); | |
245 | if (r < 0) { | |
246 | if (r != -ENOENT) | |
247 | return r; | |
248 | ||
d200735e | 249 | if (!tz.local_rtc) |
f401e48c LP |
250 | return 0; |
251 | ||
252 | w = strdup(NULL_ADJTIME_LOCAL); | |
253 | if (!w) | |
254 | return -ENOMEM; | |
255 | } else { | |
256 | char *p, *e; | |
257 | size_t a, b; | |
258 | ||
259 | p = strchr(s, '\n'); | |
260 | if (!p) { | |
261 | free(s); | |
262 | return -EIO; | |
263 | } | |
264 | ||
265 | p = strchr(p+1, '\n'); | |
266 | if (!p) { | |
267 | free(s); | |
268 | return -EIO; | |
269 | } | |
270 | ||
271 | p++; | |
272 | e = strchr(p, '\n'); | |
8ea913b2 | 273 | if (!e) { |
f401e48c LP |
274 | free(s); |
275 | return -EIO; | |
276 | } | |
277 | ||
278 | a = p - s; | |
279 | b = strlen(e); | |
280 | ||
d200735e | 281 | w = new(char, a + (tz.local_rtc ? 5 : 3) + b + 1); |
f401e48c LP |
282 | if (!w) { |
283 | free(s); | |
284 | return -ENOMEM; | |
285 | } | |
286 | ||
d200735e | 287 | *(char*) mempcpy(stpcpy(mempcpy(w, s, a), tz.local_rtc ? "LOCAL" : "UTC"), e, b) = 0; |
f401e48c LP |
288 | |
289 | if (streq(w, NULL_ADJTIME_UTC)) { | |
290 | free(w); | |
291 | ||
292 | if (unlink("/etc/adjtime") < 0) { | |
293 | if (errno != ENOENT) | |
294 | return -errno; | |
295 | } | |
296 | ||
297 | return 0; | |
298 | } | |
299 | } | |
300 | ||
301 | r = write_one_line_file_atomic("/etc/adjtime", w); | |
302 | free(w); | |
303 | ||
304 | return r; | |
305 | } | |
306 | ||
ac7019f3 | 307 | static char** get_ntp_services(void) { |
b32d1675 LP |
308 | char **r = NULL, **files, **i; |
309 | int k; | |
310 | ||
311 | k = conf_files_list(&files, ".list", | |
312 | "/etc/systemd/ntp-units.d", | |
313 | "/run/systemd/ntp-units.d", | |
314 | "/usr/local/lib/systemd/ntp-units.d", | |
315 | "/usr/lib/systemd/ntp-units.d", | |
316 | NULL); | |
317 | if (k < 0) | |
ac7019f3 LP |
318 | return NULL; |
319 | ||
b32d1675 LP |
320 | STRV_FOREACH(i, files) { |
321 | FILE *f; | |
ac7019f3 | 322 | |
b32d1675 LP |
323 | f = fopen(*i, "re"); |
324 | if (!f) | |
325 | continue; | |
ac7019f3 | 326 | |
b32d1675 LP |
327 | for (;;) { |
328 | char line[PATH_MAX], *l, **q; | |
ac7019f3 | 329 | |
b32d1675 | 330 | if (!fgets(line, sizeof(line), f)) { |
ac7019f3 | 331 | |
b32d1675 LP |
332 | if (ferror(f)) |
333 | log_error("Failed to read NTP units file: %m"); | |
ac7019f3 | 334 | |
b32d1675 LP |
335 | break; |
336 | } | |
337 | ||
338 | l = strstrip(line); | |
339 | if (l[0] == 0 || l[0] == '#') | |
340 | continue; | |
341 | ||
342 | q = strv_append(r, l); | |
343 | if (!q) { | |
669241a0 | 344 | log_error("Out of memory."); |
b32d1675 LP |
345 | break; |
346 | } | |
ac7019f3 | 347 | |
b32d1675 LP |
348 | strv_free(r); |
349 | r = q; | |
ac7019f3 LP |
350 | } |
351 | ||
b32d1675 | 352 | fclose(f); |
ac7019f3 LP |
353 | } |
354 | ||
b32d1675 | 355 | strv_free(files); |
ac7019f3 | 356 | |
f6c13ce4 | 357 | return strv_uniq(r); |
ac7019f3 LP |
358 | } |
359 | ||
c5f0532f LP |
360 | static int read_ntp(DBusConnection *bus) { |
361 | DBusMessage *m = NULL, *reply = NULL; | |
c5f0532f LP |
362 | DBusError error; |
363 | int r; | |
ac7019f3 | 364 | char **i, **l; |
c5f0532f LP |
365 | |
366 | assert(bus); | |
367 | ||
368 | dbus_error_init(&error); | |
369 | ||
ac7019f3 LP |
370 | l = get_ntp_services(); |
371 | STRV_FOREACH(i, l) { | |
372 | const char *s; | |
373 | ||
374 | if (m) | |
375 | dbus_message_unref(m); | |
376 | m = dbus_message_new_method_call( | |
377 | "org.freedesktop.systemd1", | |
378 | "/org/freedesktop/systemd1", | |
379 | "org.freedesktop.systemd1.Manager", | |
380 | "GetUnitFileState"); | |
381 | if (!m) { | |
669241a0 | 382 | log_error("Out of memory."); |
ac7019f3 LP |
383 | r = -ENOMEM; |
384 | goto finish; | |
385 | } | |
c5f0532f | 386 | |
ac7019f3 LP |
387 | if (!dbus_message_append_args(m, |
388 | DBUS_TYPE_STRING, i, | |
389 | DBUS_TYPE_INVALID)) { | |
390 | log_error("Could not append arguments to message."); | |
391 | r = -ENOMEM; | |
392 | goto finish; | |
393 | } | |
c5f0532f | 394 | |
ac7019f3 LP |
395 | if (reply) |
396 | dbus_message_unref(reply); | |
397 | reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error); | |
398 | if (!reply) { | |
399 | if (streq(error.name, "org.freedesktop.DBus.Error.FileNotFound")) { | |
400 | /* This implementation does not exist, try next one */ | |
401 | dbus_error_free(&error); | |
402 | continue; | |
403 | } | |
2aa4c315 | 404 | |
ac7019f3 LP |
405 | log_error("Failed to issue method call: %s", bus_error_message(&error)); |
406 | r = -EIO; | |
2aa4c315 LP |
407 | goto finish; |
408 | } | |
409 | ||
ac7019f3 LP |
410 | if (!dbus_message_get_args(reply, &error, |
411 | DBUS_TYPE_STRING, &s, | |
412 | DBUS_TYPE_INVALID)) { | |
413 | log_error("Failed to parse reply: %s", bus_error_message(&error)); | |
414 | r = -EIO; | |
415 | goto finish; | |
416 | } | |
c5f0532f | 417 | |
ac7019f3 LP |
418 | tz.use_ntp = |
419 | streq(s, "enabled") || | |
420 | streq(s, "enabled-runtime"); | |
421 | r = 0; | |
c5f0532f LP |
422 | goto finish; |
423 | } | |
424 | ||
ac7019f3 LP |
425 | /* NTP is not installed. */ |
426 | tz.use_ntp = 0; | |
c5f0532f LP |
427 | r = 0; |
428 | ||
429 | finish: | |
430 | if (m) | |
431 | dbus_message_unref(m); | |
432 | ||
433 | if (reply) | |
434 | dbus_message_unref(reply); | |
435 | ||
ac7019f3 LP |
436 | strv_free(l); |
437 | ||
c5f0532f LP |
438 | dbus_error_free(&error); |
439 | ||
440 | return r; | |
441 | } | |
442 | ||
443 | static int start_ntp(DBusConnection *bus, DBusError *error) { | |
444 | DBusMessage *m = NULL, *reply = NULL; | |
ac7019f3 LP |
445 | const char *mode = "replace"; |
446 | char **i, **l; | |
c5f0532f LP |
447 | int r; |
448 | ||
449 | assert(bus); | |
450 | assert(error); | |
451 | ||
ac7019f3 LP |
452 | l = get_ntp_services(); |
453 | STRV_FOREACH(i, l) { | |
454 | if (m) | |
455 | dbus_message_unref(m); | |
456 | m = dbus_message_new_method_call( | |
457 | "org.freedesktop.systemd1", | |
458 | "/org/freedesktop/systemd1", | |
459 | "org.freedesktop.systemd1.Manager", | |
460 | tz.use_ntp ? "StartUnit" : "StopUnit"); | |
461 | if (!m) { | |
462 | log_error("Could not allocate message."); | |
463 | r = -ENOMEM; | |
464 | goto finish; | |
465 | } | |
c5f0532f | 466 | |
ac7019f3 LP |
467 | if (!dbus_message_append_args(m, |
468 | DBUS_TYPE_STRING, i, | |
469 | DBUS_TYPE_STRING, &mode, | |
470 | DBUS_TYPE_INVALID)) { | |
471 | log_error("Could not append arguments to message."); | |
472 | r = -ENOMEM; | |
473 | goto finish; | |
474 | } | |
475 | ||
476 | if (reply) | |
477 | dbus_message_unref(reply); | |
478 | reply = dbus_connection_send_with_reply_and_block(bus, m, -1, error); | |
479 | if (!reply) { | |
480 | if (streq(error->name, "org.freedesktop.DBus.Error.FileNotFound") || | |
481 | streq(error->name, "org.freedesktop.systemd1.LoadFailed") || | |
482 | streq(error->name, "org.freedesktop.systemd1.NoSuchUnit")) { | |
483 | /* This implementation does not exist, try next one */ | |
484 | dbus_error_free(error); | |
485 | continue; | |
486 | } | |
c5f0532f | 487 | |
ac7019f3 LP |
488 | log_error("Failed to issue method call: %s", bus_error_message(error)); |
489 | r = -EIO; | |
490 | goto finish; | |
491 | } | |
492 | ||
493 | r = 0; | |
c5f0532f LP |
494 | goto finish; |
495 | } | |
496 | ||
ac7019f3 LP |
497 | /* No implementaiton available... */ |
498 | r = -ENOENT; | |
c5f0532f LP |
499 | |
500 | finish: | |
501 | if (m) | |
502 | dbus_message_unref(m); | |
503 | ||
504 | if (reply) | |
505 | dbus_message_unref(reply); | |
506 | ||
ac7019f3 LP |
507 | strv_free(l); |
508 | ||
c5f0532f LP |
509 | return r; |
510 | } | |
511 | ||
512 | static int enable_ntp(DBusConnection *bus, DBusError *error) { | |
513 | DBusMessage *m = NULL, *reply = NULL; | |
c5f0532f LP |
514 | int r; |
515 | DBusMessageIter iter; | |
516 | dbus_bool_t f = FALSE, t = TRUE; | |
ac7019f3 | 517 | char **i, **l; |
c5f0532f LP |
518 | |
519 | assert(bus); | |
520 | assert(error); | |
521 | ||
ac7019f3 LP |
522 | l = get_ntp_services(); |
523 | STRV_FOREACH(i, l) { | |
524 | char* k[2]; | |
525 | ||
526 | if (m) | |
527 | dbus_message_unref(m); | |
528 | m = dbus_message_new_method_call( | |
529 | "org.freedesktop.systemd1", | |
530 | "/org/freedesktop/systemd1", | |
531 | "org.freedesktop.systemd1.Manager", | |
532 | tz.use_ntp ? "EnableUnitFiles" : "DisableUnitFiles"); | |
533 | if (!m) { | |
534 | log_error("Could not allocate message."); | |
535 | r = -ENOMEM; | |
536 | goto finish; | |
537 | } | |
c5f0532f | 538 | |
ac7019f3 | 539 | dbus_message_iter_init_append(m, &iter); |
c5f0532f | 540 | |
ac7019f3 LP |
541 | k[0] = *i; |
542 | k[1] = NULL; | |
c5f0532f | 543 | |
ac7019f3 LP |
544 | r = bus_append_strv_iter(&iter, k); |
545 | if (r < 0) { | |
546 | log_error("Failed to append unit files."); | |
547 | goto finish; | |
548 | } | |
c5f0532f | 549 | |
ac7019f3 LP |
550 | /* send runtime bool */ |
551 | if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &f)) { | |
552 | log_error("Failed to append runtime boolean."); | |
c5f0532f LP |
553 | r = -ENOMEM; |
554 | goto finish; | |
555 | } | |
c5f0532f | 556 | |
ac7019f3 LP |
557 | if (tz.use_ntp) { |
558 | /* send force bool */ | |
559 | if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &t)) { | |
560 | log_error("Failed to append force boolean."); | |
561 | r = -ENOMEM; | |
562 | goto finish; | |
563 | } | |
564 | } | |
c5f0532f | 565 | |
ac7019f3 LP |
566 | if (reply) |
567 | dbus_message_unref(reply); | |
568 | reply = dbus_connection_send_with_reply_and_block(bus, m, -1, error); | |
569 | if (!reply) { | |
570 | if (streq(error->name, "org.freedesktop.DBus.Error.FileNotFound")) { | |
571 | /* This implementation does not exist, try next one */ | |
572 | dbus_error_free(error); | |
573 | continue; | |
574 | } | |
c5f0532f | 575 | |
ac7019f3 LP |
576 | log_error("Failed to issue method call: %s", bus_error_message(error)); |
577 | r = -EIO; | |
578 | goto finish; | |
579 | } | |
580 | ||
581 | dbus_message_unref(m); | |
582 | m = dbus_message_new_method_call( | |
583 | "org.freedesktop.systemd1", | |
584 | "/org/freedesktop/systemd1", | |
585 | "org.freedesktop.systemd1.Manager", | |
586 | "Reload"); | |
587 | if (!m) { | |
588 | log_error("Could not allocate message."); | |
589 | r = -ENOMEM; | |
590 | goto finish; | |
591 | } | |
592 | ||
593 | dbus_message_unref(reply); | |
594 | reply = dbus_connection_send_with_reply_and_block(bus, m, -1, error); | |
595 | if (!reply) { | |
596 | log_error("Failed to issue method call: %s", bus_error_message(error)); | |
597 | r = -EIO; | |
598 | goto finish; | |
599 | } | |
600 | ||
601 | r = 0; | |
c5f0532f LP |
602 | goto finish; |
603 | } | |
604 | ||
ac7019f3 | 605 | r = -ENOENT; |
c5f0532f LP |
606 | |
607 | finish: | |
608 | if (m) | |
609 | dbus_message_unref(m); | |
610 | ||
611 | if (reply) | |
612 | dbus_message_unref(reply); | |
613 | ||
ac7019f3 LP |
614 | strv_free(l); |
615 | ||
c5f0532f LP |
616 | return r; |
617 | } | |
618 | ||
619 | static int property_append_ntp(DBusMessageIter *i, const char *property, void *data) { | |
620 | dbus_bool_t db; | |
621 | ||
622 | assert(i); | |
623 | assert(property); | |
624 | ||
d200735e | 625 | db = tz.use_ntp > 0; |
c5f0532f LP |
626 | |
627 | if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &db)) | |
628 | return -ENOMEM; | |
629 | ||
630 | return 0; | |
631 | } | |
632 | ||
d200735e MS |
633 | static const BusProperty bus_timedate_properties[] = { |
634 | { "Timezone", bus_property_append_string, "s", offsetof(TZ, zone), true }, | |
635 | { "LocalRTC", bus_property_append_bool, "b", offsetof(TZ, local_rtc) }, | |
636 | { "NTP", property_append_ntp, "b", offsetof(TZ, use_ntp) }, | |
637 | { NULL, } | |
638 | }; | |
639 | ||
640 | static const BusBoundProperties bps[] = { | |
641 | { "org.freedesktop.timedate1", bus_timedate_properties, &tz }, | |
642 | { NULL, } | |
643 | }; | |
644 | ||
f401e48c LP |
645 | static DBusHandlerResult timedate_message_handler( |
646 | DBusConnection *connection, | |
647 | DBusMessage *message, | |
648 | void *userdata) { | |
649 | ||
f401e48c LP |
650 | DBusMessage *reply = NULL, *changed = NULL; |
651 | DBusError error; | |
652 | int r; | |
653 | ||
654 | assert(connection); | |
655 | assert(message); | |
656 | ||
657 | dbus_error_init(&error); | |
658 | ||
659 | if (dbus_message_is_method_call(message, "org.freedesktop.timedate1", "SetTimezone")) { | |
660 | const char *z; | |
661 | dbus_bool_t interactive; | |
662 | ||
663 | if (!dbus_message_get_args( | |
664 | message, | |
665 | &error, | |
666 | DBUS_TYPE_STRING, &z, | |
667 | DBUS_TYPE_BOOLEAN, &interactive, | |
668 | DBUS_TYPE_INVALID)) | |
669 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
670 | ||
671 | if (!valid_timezone(z)) | |
672 | return bus_send_error_reply(connection, message, NULL, -EINVAL); | |
673 | ||
d200735e | 674 | if (!streq_ptr(z, tz.zone)) { |
f401e48c LP |
675 | char *t; |
676 | ||
89f13440 | 677 | r = verify_polkit(connection, message, "org.freedesktop.timedate1.set-timezone", interactive, NULL, &error); |
f401e48c LP |
678 | if (r < 0) |
679 | return bus_send_error_reply(connection, message, &error, r); | |
680 | ||
681 | t = strdup(z); | |
682 | if (!t) | |
683 | goto oom; | |
684 | ||
d200735e MS |
685 | free(tz.zone); |
686 | tz.zone = t; | |
f401e48c | 687 | |
2076cf88 | 688 | /* 1. Write new configuration file */ |
f401e48c LP |
689 | r = write_data_timezone(); |
690 | if (r < 0) { | |
691 | log_error("Failed to set timezone: %s", strerror(-r)); | |
692 | return bus_send_error_reply(connection, message, NULL, r); | |
693 | } | |
694 | ||
d200735e | 695 | if (tz.local_rtc) { |
2076cf88 LP |
696 | struct timespec ts; |
697 | struct tm *tm; | |
698 | ||
699 | /* 2. Teach kernel new timezone */ | |
ff4daf5a | 700 | hwclock_apply_localtime_delta(NULL); |
2076cf88 LP |
701 | |
702 | /* 3. Sync RTC from system clock, with the new delta */ | |
703 | assert_se(clock_gettime(CLOCK_REALTIME, &ts) == 0); | |
704 | assert_se(tm = localtime(&ts.tv_sec)); | |
705 | hwclock_set_time(tm); | |
706 | } | |
707 | ||
d200735e | 708 | log_info("Changed timezone to '%s'.", tz.zone); |
f401e48c LP |
709 | |
710 | changed = bus_properties_changed_new( | |
711 | "/org/freedesktop/timedate1", | |
712 | "org.freedesktop.timedate1", | |
713 | "Timezone\0"); | |
714 | if (!changed) | |
715 | goto oom; | |
716 | } | |
717 | ||
718 | } else if (dbus_message_is_method_call(message, "org.freedesktop.timedate1", "SetLocalRTC")) { | |
719 | dbus_bool_t lrtc; | |
05a4abb9 | 720 | dbus_bool_t fix_system; |
f401e48c LP |
721 | dbus_bool_t interactive; |
722 | ||
723 | if (!dbus_message_get_args( | |
724 | message, | |
725 | &error, | |
726 | DBUS_TYPE_BOOLEAN, &lrtc, | |
05a4abb9 | 727 | DBUS_TYPE_BOOLEAN, &fix_system, |
f401e48c LP |
728 | DBUS_TYPE_BOOLEAN, &interactive, |
729 | DBUS_TYPE_INVALID)) | |
730 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
731 | ||
d200735e | 732 | if (lrtc != tz.local_rtc) { |
2076cf88 LP |
733 | struct timespec ts; |
734 | ||
89f13440 | 735 | r = verify_polkit(connection, message, "org.freedesktop.timedate1.set-local-rtc", interactive, NULL, &error); |
f401e48c LP |
736 | if (r < 0) |
737 | return bus_send_error_reply(connection, message, &error, r); | |
738 | ||
d200735e | 739 | tz.local_rtc = lrtc; |
f401e48c | 740 | |
2076cf88 | 741 | /* 1. Write new configuration file */ |
f401e48c LP |
742 | r = write_data_local_rtc(); |
743 | if (r < 0) { | |
744 | log_error("Failed to set RTC to local/UTC: %s", strerror(-r)); | |
745 | return bus_send_error_reply(connection, message, NULL, r); | |
746 | } | |
747 | ||
2076cf88 | 748 | /* 2. Teach kernel new timezone */ |
d200735e | 749 | if (tz.local_rtc) |
ff4daf5a | 750 | hwclock_apply_localtime_delta(NULL); |
2076cf88 LP |
751 | else |
752 | hwclock_reset_localtime_delta(); | |
753 | ||
754 | /* 3. Synchronize clocks */ | |
755 | assert_se(clock_gettime(CLOCK_REALTIME, &ts) == 0); | |
756 | ||
05a4abb9 | 757 | if (fix_system) { |
2076cf88 LP |
758 | struct tm tm; |
759 | ||
760 | /* Sync system clock from RTC; first, | |
761 | * initialize the timezone fields of | |
762 | * struct tm. */ | |
d200735e | 763 | if (tz.local_rtc) |
2076cf88 LP |
764 | tm = *localtime(&ts.tv_sec); |
765 | else | |
766 | tm = *gmtime(&ts.tv_sec); | |
767 | ||
768 | /* Override the main fields of | |
769 | * struct tm, but not the timezone | |
770 | * fields */ | |
771 | if (hwclock_get_time(&tm) >= 0) { | |
772 | ||
773 | /* And set the system clock | |
774 | * with this */ | |
d200735e | 775 | if (tz.local_rtc) |
2076cf88 LP |
776 | ts.tv_sec = mktime(&tm); |
777 | else | |
778 | ts.tv_sec = timegm(&tm); | |
779 | ||
780 | clock_settime(CLOCK_REALTIME, &ts); | |
781 | } | |
782 | ||
783 | } else { | |
784 | struct tm *tm; | |
785 | ||
786 | /* Sync RTC from system clock */ | |
d200735e | 787 | if (tz.local_rtc) |
2076cf88 LP |
788 | tm = localtime(&ts.tv_sec); |
789 | else | |
790 | tm = gmtime(&ts.tv_sec); | |
791 | ||
792 | hwclock_set_time(tm); | |
793 | } | |
794 | ||
d200735e | 795 | log_info("RTC configured to %s time.", tz.local_rtc ? "local" : "UTC"); |
f401e48c LP |
796 | |
797 | changed = bus_properties_changed_new( | |
798 | "/org/freedesktop/timedate1", | |
799 | "org.freedesktop.timedate1", | |
800 | "LocalRTC\0"); | |
801 | if (!changed) | |
802 | goto oom; | |
803 | } | |
804 | ||
805 | } else if (dbus_message_is_method_call(message, "org.freedesktop.timedate1", "SetTime")) { | |
806 | int64_t utc; | |
807 | dbus_bool_t relative; | |
808 | dbus_bool_t interactive; | |
809 | ||
810 | if (!dbus_message_get_args( | |
811 | message, | |
812 | &error, | |
813 | DBUS_TYPE_INT64, &utc, | |
814 | DBUS_TYPE_BOOLEAN, &relative, | |
815 | DBUS_TYPE_BOOLEAN, &interactive, | |
816 | DBUS_TYPE_INVALID)) | |
817 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
818 | ||
819 | if (!relative && utc <= 0) | |
820 | return bus_send_error_reply(connection, message, NULL, -EINVAL); | |
821 | ||
822 | if (!relative || utc != 0) { | |
823 | struct timespec ts; | |
2076cf88 | 824 | struct tm* tm; |
f401e48c | 825 | |
89f13440 | 826 | r = verify_polkit(connection, message, "org.freedesktop.timedate1.set-time", interactive, NULL, &error); |
f401e48c LP |
827 | if (r < 0) |
828 | return bus_send_error_reply(connection, message, &error, r); | |
829 | ||
830 | if (relative) | |
831 | timespec_store(&ts, now(CLOCK_REALTIME) + utc); | |
832 | else | |
833 | timespec_store(&ts, utc); | |
834 | ||
2076cf88 | 835 | /* Set system clock */ |
f401e48c LP |
836 | if (clock_settime(CLOCK_REALTIME, &ts) < 0) { |
837 | log_error("Failed to set local time: %m"); | |
838 | return bus_send_error_reply(connection, message, NULL, -errno); | |
839 | } | |
840 | ||
2076cf88 | 841 | /* Sync down to RTC */ |
d200735e | 842 | if (tz.local_rtc) |
2076cf88 LP |
843 | tm = localtime(&ts.tv_sec); |
844 | else | |
845 | tm = gmtime(&ts.tv_sec); | |
846 | ||
847 | hwclock_set_time(tm); | |
848 | ||
f401e48c LP |
849 | log_info("Changed local time to %s", ctime(&ts.tv_sec)); |
850 | } | |
c5f0532f LP |
851 | } else if (dbus_message_is_method_call(message, "org.freedesktop.timedate1", "SetNTP")) { |
852 | dbus_bool_t ntp; | |
853 | dbus_bool_t interactive; | |
854 | ||
855 | if (!dbus_message_get_args( | |
856 | message, | |
857 | &error, | |
858 | DBUS_TYPE_BOOLEAN, &ntp, | |
859 | DBUS_TYPE_BOOLEAN, &interactive, | |
860 | DBUS_TYPE_INVALID)) | |
861 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
862 | ||
d200735e | 863 | if (ntp != !!tz.use_ntp) { |
c5f0532f | 864 | |
89f13440 | 865 | r = verify_polkit(connection, message, "org.freedesktop.timedate1.set-ntp", interactive, NULL, &error); |
c5f0532f LP |
866 | if (r < 0) |
867 | return bus_send_error_reply(connection, message, &error, r); | |
868 | ||
d200735e | 869 | tz.use_ntp = !!ntp; |
c5f0532f LP |
870 | |
871 | r = enable_ntp(connection, &error); | |
872 | if (r < 0) | |
873 | return bus_send_error_reply(connection, message, &error, r); | |
874 | ||
875 | r = start_ntp(connection, &error); | |
876 | if (r < 0) | |
877 | return bus_send_error_reply(connection, message, &error, r); | |
878 | ||
d200735e | 879 | log_info("Set NTP to %s", tz.use_ntp ? "enabled" : "disabled"); |
c5f0532f LP |
880 | |
881 | changed = bus_properties_changed_new( | |
882 | "/org/freedesktop/timedate1", | |
883 | "org.freedesktop.timedate1", | |
884 | "NTP\0"); | |
885 | if (!changed) | |
886 | goto oom; | |
887 | } | |
f401e48c LP |
888 | |
889 | } else | |
d200735e | 890 | return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, bps); |
f401e48c LP |
891 | |
892 | if (!(reply = dbus_message_new_method_return(message))) | |
893 | goto oom; | |
894 | ||
895 | if (!dbus_connection_send(connection, reply, NULL)) | |
896 | goto oom; | |
897 | ||
898 | dbus_message_unref(reply); | |
899 | reply = NULL; | |
900 | ||
901 | if (changed) { | |
902 | ||
903 | if (!dbus_connection_send(connection, changed, NULL)) | |
904 | goto oom; | |
905 | ||
906 | dbus_message_unref(changed); | |
907 | } | |
908 | ||
909 | return DBUS_HANDLER_RESULT_HANDLED; | |
910 | ||
911 | oom: | |
912 | if (reply) | |
913 | dbus_message_unref(reply); | |
914 | ||
915 | if (changed) | |
916 | dbus_message_unref(changed); | |
917 | ||
918 | dbus_error_free(&error); | |
919 | ||
920 | return DBUS_HANDLER_RESULT_NEED_MEMORY; | |
921 | } | |
922 | ||
923 | static int connect_bus(DBusConnection **_bus) { | |
924 | static const DBusObjectPathVTable timedate_vtable = { | |
925 | .message_function = timedate_message_handler | |
926 | }; | |
927 | DBusError error; | |
928 | DBusConnection *bus = NULL; | |
929 | int r; | |
930 | ||
931 | assert(_bus); | |
932 | ||
933 | dbus_error_init(&error); | |
934 | ||
935 | bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error); | |
936 | if (!bus) { | |
a2e52832 | 937 | log_error("Failed to get system D-Bus connection: %s", bus_error_message(&error)); |
f401e48c LP |
938 | r = -ECONNREFUSED; |
939 | goto fail; | |
940 | } | |
941 | ||
ad740100 LP |
942 | dbus_connection_set_exit_on_disconnect(bus, FALSE); |
943 | ||
944 | if (!dbus_connection_register_object_path(bus, "/org/freedesktop/timedate1", &timedate_vtable, NULL) || | |
945 | !dbus_connection_add_filter(bus, bus_exit_idle_filter, &remain_until, NULL)) { | |
669241a0 | 946 | log_error("Out of memory."); |
f401e48c LP |
947 | r = -ENOMEM; |
948 | goto fail; | |
949 | } | |
950 | ||
add10b5a LP |
951 | r = dbus_bus_request_name(bus, "org.freedesktop.timedate1", DBUS_NAME_FLAG_DO_NOT_QUEUE, &error); |
952 | if (dbus_error_is_set(&error)) { | |
953 | log_error("Failed to register name on bus: %s", bus_error_message(&error)); | |
954 | r = -EEXIST; | |
955 | goto fail; | |
956 | } | |
957 | ||
958 | if (r != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER) { | |
959 | log_error("Failed to acquire name."); | |
f401e48c LP |
960 | r = -EEXIST; |
961 | goto fail; | |
962 | } | |
963 | ||
964 | if (_bus) | |
965 | *_bus = bus; | |
966 | ||
967 | return 0; | |
968 | ||
969 | fail: | |
970 | dbus_connection_close(bus); | |
971 | dbus_connection_unref(bus); | |
972 | ||
973 | dbus_error_free(&error); | |
974 | ||
975 | return r; | |
976 | } | |
977 | ||
978 | int main(int argc, char *argv[]) { | |
979 | int r; | |
980 | DBusConnection *bus = NULL; | |
ad740100 | 981 | bool exiting = false; |
f401e48c LP |
982 | |
983 | log_set_target(LOG_TARGET_AUTO); | |
984 | log_parse_environment(); | |
985 | log_open(); | |
986 | ||
4c12626c LP |
987 | umask(0022); |
988 | ||
91f9dcaf LP |
989 | if (argc == 2 && streq(argv[1], "--introspect")) { |
990 | fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE | |
991 | "<node>\n", stdout); | |
992 | fputs(timedate_interface, stdout); | |
993 | fputs("</node>\n", stdout); | |
994 | return 0; | |
995 | } | |
996 | ||
f401e48c LP |
997 | if (argc != 1) { |
998 | log_error("This program takes no arguments."); | |
999 | r = -EINVAL; | |
1000 | goto finish; | |
1001 | } | |
1002 | ||
f401e48c LP |
1003 | r = read_data(); |
1004 | if (r < 0) { | |
1005 | log_error("Failed to read timezone data: %s", strerror(-r)); | |
1006 | goto finish; | |
1007 | } | |
1008 | ||
1009 | r = connect_bus(&bus); | |
1010 | if (r < 0) | |
1011 | goto finish; | |
1012 | ||
c5f0532f LP |
1013 | r = read_ntp(bus); |
1014 | if (r < 0) { | |
1015 | log_error("Failed to determine whether NTP is enabled: %s", strerror(-r)); | |
1016 | goto finish; | |
1017 | } | |
1018 | ||
ad740100 LP |
1019 | remain_until = now(CLOCK_MONOTONIC) + DEFAULT_EXIT_USEC; |
1020 | for (;;) { | |
1021 | ||
1022 | if (!dbus_connection_read_write_dispatch(bus, exiting ? -1 : (int) (DEFAULT_EXIT_USEC/USEC_PER_MSEC))) | |
1023 | break; | |
1024 | ||
1025 | if (!exiting && remain_until < now(CLOCK_MONOTONIC)) { | |
1026 | exiting = true; | |
1027 | bus_async_unregister_and_exit(bus, "org.freedesktop.hostname1"); | |
1028 | } | |
1029 | } | |
f401e48c LP |
1030 | |
1031 | r = 0; | |
1032 | ||
1033 | finish: | |
1034 | free_data(); | |
1035 | ||
1036 | if (bus) { | |
1037 | dbus_connection_flush(bus); | |
1038 | dbus_connection_close(bus); | |
1039 | dbus_connection_unref(bus); | |
1040 | } | |
1041 | ||
1042 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
1043 | } |