3b82e3c1 |
1 | /* |
2 | * Copyright (c) 2014 Ian Sutton <ian@kremlin.cc> |
3 | * |
4 | * Permission to use, copy, modify, and distribute this software for any |
5 | * purpose with or without fee is hereby granted, provided that the above |
6 | * copyright notice and this permission notice appear in all copies. |
7 | * |
8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
15 | */ |
16 | |
b6ad18ad |
17 | #include <unistd.h> |
18 | #include <limits.h> |
c12c41f4 |
19 | #include <signal.h> |
b6ad18ad |
20 | |
a3d2e50f |
21 | #include <sys/types.h> |
a8f71719 |
22 | #include <sys/time.h> |
c8a3e18e |
23 | #include <sys/stat.h> |
24 | #include <errno.h> |
a3d2e50f |
25 | #include <time.h> |
b6ad18ad |
26 | #include <string.h> |
c8a3e18e |
27 | #include <tzfile.h> |
b6ad18ad |
28 | |
29 | #include <glib/gprintf.h> |
8caf1f61 |
30 | #include <glib-unix.h> |
1066bd36 |
31 | #include <glib/gstdio.h> |
904d744d |
32 | #include <polkit/polkit.h> |
b6ad18ad |
33 | |
1e8c7c88 |
34 | #include "timedated-gen.h" |
a33bcdfa |
35 | #include "timedated.h" |
1e8c7c88 |
36 | |
ed4cf3c8 |
37 | #include "../../util.h" |
483e90b7 |
38 | |
c8a3e18e |
39 | #define TZNAME_MAX PATH_MAX |
40 | |
b6ad18ad |
41 | GPtrArray *timedated_freeable; |
42 | Timedate1 *timedated_interf; |
43 | |
c12c41f4 |
44 | GMainLoop *timedated_loop; |
45 | |
46 | guint bus_descriptor; |
47 | gboolean dbus_interface_exported; /* reliable because of gdbus operational guarantees */ |
48 | |
03f12ac7 |
49 | const gchar *OS_LOCALTIME = "/etc/localtime"; /* current timezone file */ |
50 | const gchar *OS_TIMEZONE_PATH = "/usr/share/zoneinfo"; /* path to system timezone files */ |
51 | |
52 | struct timezone_checksum_pair { |
53 | |
54 | gchar *path; |
55 | gchar *sum; |
56 | gboolean posix; |
57 | gboolean right; |
58 | }; |
59 | |
60 | static struct timezone_checksum_pair tz_table[5000]; |
1066bd36 |
61 | |
1ce41045 |
62 | /* --- begin method/property/dbus signal code --- */ |
b6ad18ad |
63 | |
28b86015 |
64 | static gboolean |
a8f71719 |
65 | on_handle_set_time(Timedate1 *td1_passed_interf, |
28b86015 |
66 | GDBusMethodInvocation *invoc, |
67 | const gchar *greet, |
68 | gpointer data) { |
a8f71719 |
69 | |
70 | GVariant *params; |
71 | gint64 proposed_time, cur_time; |
72 | const gchar *bus_name; |
73 | gboolean policykit_auth; |
74 | check_auth_result is_authed; |
75 | gboolean relative; /* relative if passed time_t is meant to be added to current time */ |
644bae40 |
76 | struct timespec *new_time; |
a8f71719 |
77 | |
78 | params = g_dbus_method_invocation_get_parameters(invoc); |
79 | g_variant_get(params, "(xbb)", &proposed_time, &relative, &policykit_auth); |
80 | bus_name = g_dbus_method_invocation_get_sender(invoc); |
81 | |
82 | is_authed = polkit_try_auth(bus_name, "org.freedesktop.timedate1.set-time", policykit_auth); |
83 | |
84 | switch(is_authed) { |
85 | |
86 | case AUTHORIZED_NATIVELY: |
87 | case AUTHORIZED_BY_PROMPT: |
88 | break; |
89 | |
90 | case UNAUTHORIZED_NATIVELY: |
91 | case UNAUTHORIZED_FAILED_PROMPT: |
92 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EACCES", "Insufficient permissions to set system time."); |
93 | return FALSE; |
94 | |
95 | case ERROR_BADBUS: |
96 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EFAULT", "Provided bus name is invalid."); |
97 | return FALSE; |
98 | |
99 | case ERROR_BADACTION: |
100 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EFAULT", "Provided action ID is invalid."); |
101 | return FALSE; |
102 | |
103 | case ERROR_GENERIC: |
104 | default: |
105 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.ECANCELED", "Failed to set system time for unknown reasons."); |
106 | return FALSE; |
107 | } |
108 | |
fe959043 |
109 | if(!proposed_time) { |
110 | |
111 | timedate1_complete_set_time(td1_passed_interf, invoc); |
112 | return TRUE; |
a8f71719 |
113 | |
fe959043 |
114 | } else if(relative) { |
a8f71719 |
115 | |
116 | cur_time = g_get_real_time(); |
fe959043 |
117 | |
10ddceeb |
118 | if(proposed_time < 0 && cur_time + proposed_time > cur_time) { |
fe959043 |
119 | |
120 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EINVAL", "Resultant time out of bounds."); |
121 | return FALSE; |
122 | |
10ddceeb |
123 | } else if(proposed_time > 0 && cur_time + proposed_time < cur_time) { |
fe959043 |
124 | |
125 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EINVAL", "Resultant time out of bounds."); |
126 | return FALSE; |
127 | } |
128 | |
644bae40 |
129 | new_time = mktimespec(proposed_time); |
fe959043 |
130 | |
644bae40 |
131 | if(!clock_settime(CLOCK_REALTIME, new_time)) { |
fe959043 |
132 | |
133 | timedate1_complete_set_time(td1_passed_interf, invoc); |
134 | return TRUE; |
135 | |
136 | } else { |
137 | |
138 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.ECANCELED", "Failed to set system time for unknown reasons."); |
139 | return FALSE; |
140 | } |
141 | |
10ddceeb |
142 | } else if(proposed_time > 0) { |
a8f71719 |
143 | |
a8f71719 |
144 | |
644bae40 |
145 | new_time = mktimespec(proposed_time); |
146 | |
147 | if(!clock_settime(CLOCK_REALTIME, new_time)) { |
a8f71719 |
148 | |
149 | timedate1_complete_set_time(td1_passed_interf, invoc); |
150 | return TRUE; |
151 | |
152 | } else { |
153 | |
154 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.ECANCELED", "Failed to set system time for unknown reasons."); |
155 | return FALSE; |
156 | } |
fe959043 |
157 | |
a8f71719 |
158 | } else { |
159 | |
fe959043 |
160 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EINVAL", "Resultant time out of bounds."); |
a8f71719 |
161 | return FALSE; |
162 | } |
28b86015 |
163 | } |
b6ad18ad |
164 | |
28b86015 |
165 | static gboolean |
a8f71719 |
166 | on_handle_set_timezone(Timedate1 *td1_passed_interf, |
28b86015 |
167 | GDBusMethodInvocation *invoc, |
168 | const gchar *greet, |
169 | gpointer data) { |
c8a3e18e |
170 | |
171 | GVariant *params; |
172 | gchar *proposed_tz; |
173 | const gchar *bus_name; |
174 | gboolean policykit_auth; |
175 | check_auth_result is_authed; |
176 | |
177 | gchar *tz_target_path; |
178 | struct stat *statbuf; |
179 | extern int errno; |
180 | |
181 | params = g_dbus_method_invocation_get_parameters(invoc); |
182 | g_variant_get(params, "(sb)", &proposed_tz, &policykit_auth); |
183 | bus_name = g_dbus_method_invocation_get_sender(invoc); |
184 | |
185 | is_authed = polkit_try_auth(bus_name, "org.freedesktop.timedate1.set-timezone", policykit_auth); |
186 | |
187 | switch(is_authed) { |
188 | |
189 | case AUTHORIZED_NATIVELY: |
190 | case AUTHORIZED_BY_PROMPT: |
191 | break; |
192 | |
193 | case UNAUTHORIZED_NATIVELY: |
194 | case UNAUTHORIZED_FAILED_PROMPT: |
195 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EACCES", "Insufficient permissions to set timezone."); |
196 | return FALSE; |
197 | |
198 | case ERROR_BADBUS: |
199 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EFAULT", "Provided bus name is invalid."); |
200 | return FALSE; |
201 | |
202 | case ERROR_BADACTION: |
203 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EFAULT", "Provided action ID is invalid."); |
204 | return FALSE; |
205 | |
206 | case ERROR_GENERIC: |
207 | default: |
208 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.ECANCELED", "Failed to set timezone for unknown reasons."); |
209 | return FALSE; |
210 | } |
211 | |
212 | statbuf = (struct stat*) calloc(1, sizeof(struct stat)); |
213 | tz_target_path = (gchar *) calloc(1, TZNAME_MAX); |
214 | |
215 | g_ptr_array_add(timedated_freeable, statbuf); |
216 | g_ptr_array_add(timedated_freeable, tz_target_path); |
217 | |
218 | strlcat(tz_target_path, TZDIR, TZNAME_MAX); |
219 | strlcat(tz_target_path, "/", TZNAME_MAX); |
220 | strlcat(tz_target_path, proposed_tz, TZNAME_MAX); |
221 | |
0b7afeee |
222 | if(strstr(tz_target_path, "../")) { |
223 | |
224 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EBADF", "Provided timezone is invalid."); |
225 | return FALSE; |
226 | } |
c8a3e18e |
227 | |
228 | if(!statbuf) |
229 | return FALSE; |
230 | |
231 | if(lstat(tz_target_path, statbuf)) { |
232 | |
233 | switch(errno) { |
234 | |
235 | case ENOENT: |
236 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.ENOENT", "Specified timezone does not exist."); |
237 | break; |
238 | |
239 | default: |
240 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EBADF", "Specified timezone is invalid."); |
241 | break; |
242 | } |
243 | |
244 | return FALSE; |
245 | } |
246 | |
247 | if(!S_ISREG(statbuf->st_mode)) { |
248 | |
249 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EBADF", "Specified path is of an inappropriate type."); |
250 | return FALSE; |
251 | } |
252 | |
253 | memset(statbuf, 0, sizeof statbuf); |
254 | |
255 | if(!lstat(TZDEFAULT, statbuf)) |
256 | if(remove(TZDEFAULT)) |
257 | return FALSE; |
258 | |
259 | if(symlink(tz_target_path, TZDEFAULT)) |
260 | return FALSE; |
261 | |
262 | |
263 | timedate1_complete_set_timezone(td1_passed_interf, invoc); |
264 | |
265 | return TRUE; |
28b86015 |
266 | } |
267 | |
268 | static gboolean |
a8f71719 |
269 | on_handle_set_local_rtc(Timedate1 *td1_passed_interf, |
28b86015 |
270 | GDBusMethodInvocation *invoc, |
271 | const gchar *greet, |
272 | gpointer data) { |
0b7afeee |
273 | |
06407d3e |
274 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.ENODEV", "Unix RTC must be in UTC."); |
0b7afeee |
275 | return TRUE; |
28b86015 |
276 | } |
277 | |
278 | static gboolean |
a8f71719 |
279 | on_handle_set_ntp(Timedate1 *td1_passed_interf, |
28b86015 |
280 | GDBusMethodInvocation *invoc, |
281 | const gchar *greet, |
282 | gpointer data) { |
0280f7d2 |
283 | |
284 | GVariant *params; |
285 | const gchar *bus_name; |
286 | gboolean policykit_auth; |
287 | check_auth_result is_authed; |
288 | |
0e955e92 |
289 | /* revert to rcctl when 5.7 rolls around */ |
0280f7d2 |
290 | gint ntpd_notrunning, ntpd_notenabled; /* this logic flip is due to rcctl returning 0 on success, |
291 | * in this case an error means ntpd is not running or not enabled */ |
292 | gboolean proposed_ntpstate; |
293 | GError *sh_errors; |
294 | |
295 | extern int errno; |
296 | |
297 | params = g_dbus_method_invocation_get_parameters(invoc); |
298 | g_variant_get(params, "(bb)", &proposed_ntpstate, &policykit_auth); |
299 | bus_name = g_dbus_method_invocation_get_sender(invoc); |
300 | |
301 | is_authed = polkit_try_auth(bus_name, "org.freedesktop.timedate1.set-ntp", policykit_auth); |
302 | |
303 | switch(is_authed) { |
304 | |
305 | case AUTHORIZED_NATIVELY: |
306 | case AUTHORIZED_BY_PROMPT: |
307 | break; |
308 | |
309 | case UNAUTHORIZED_NATIVELY: |
310 | case UNAUTHORIZED_FAILED_PROMPT: |
311 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EACCES", "Insufficient permissions to toggle the NTP daemon."); |
312 | return FALSE; |
313 | |
314 | case ERROR_BADBUS: |
315 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EFAULT", "Provided bus name is invalid."); |
316 | return FALSE; |
317 | |
318 | case ERROR_BADACTION: |
319 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EFAULT", "Provided action ID is invalid."); |
320 | return FALSE; |
321 | |
322 | case ERROR_GENERIC: |
323 | default: |
324 | g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.ECANCELED", "Failed to toggle the NTP daemon for unknown reasons."); |
325 | return FALSE; |
326 | } |
327 | |
328 | ntpd_notrunning = 0; /* GLib does not bother asserting the passed return value int to zero */ |
329 | ntpd_notenabled = 0; /* if the program's exit status is also zero, hence this decl. */ |
330 | |
0e955e92 |
331 | if((ntpd_notrunning = system("/etc/rc.d/ntpd check > /dev/null 2>&1")) == -1) |
0280f7d2 |
332 | return FALSE; |
333 | |
0e955e92 |
334 | if((ntpd_notenabled = system("/etc/rc.d/ntpd status > /dev/null 2>&1")) == -1) |
0280f7d2 |
335 | return FALSE; |
336 | |
337 | if(proposed_ntpstate) { |
338 | |
339 | if(ntpd_notrunning) |
0e955e92 |
340 | system("/etc/rc.d/ntpd -f start > /dev/null 2>&1"); |
0280f7d2 |
341 | |
342 | if(ntpd_notenabled) |
0e955e92 |
343 | system("/etc/rc.d/ntpd enable > /dev/null 2>&1"); |
0280f7d2 |
344 | |
345 | } else { |
346 | |
347 | if(!ntpd_notrunning) |
0e955e92 |
348 | system("/etc/rc.d/ntpd stop > /dev/null 2>&1"); |
0280f7d2 |
349 | |
350 | if(!ntpd_notenabled) |
0e955e92 |
351 | system("/etc/rc.d/ntpd disable > /dev/null 2>&1"); |
0280f7d2 |
352 | } |
353 | |
354 | timedate1_complete_set_ntp(td1_passed_interf, invoc); |
355 | |
356 | return TRUE; |
28b86015 |
357 | } |
358 | |
359 | const gchar * |
360 | our_get_timezone() { |
361 | |
1066bd36 |
362 | GStatBuf *stat_zoneinfo; |
03f12ac7 |
363 | gchar *find_cmd, *readlink_path, *ret, *argvp, *hash_to_match; |
364 | gint argcp; |
365 | GError *err; |
366 | struct timezone_checksum_pair tmp; |
1066bd36 |
367 | |
03f12ac7 |
368 | find_cmd = (gchar *) g_malloc0(2048); |
369 | stat_zoneinfo = (GStatBuf *) g_malloc0(8192); |
370 | err = (GError *) g_malloc0(2048); |
1066bd36 |
371 | |
372 | if(g_stat(OS_LOCALTIME, stat_zoneinfo)) { |
373 | |
374 | g_printf("could not read from %s! please symlink or copy a timezone file from %s to %s!\n", OS_LOCALTIME, OS_TIMEZONE_PATH, OS_LOCALTIME); |
375 | ret = NULL; |
376 | |
377 | } else if(g_file_test(OS_LOCALTIME, G_FILE_TEST_IS_SYMLINK)) { |
378 | |
379 | readlink_path = g_file_read_link(OS_LOCALTIME, &err); |
03f12ac7 |
380 | |
381 | gchar *split[2] = { readlink_path, "" }; |
382 | tmp = parse_timezone_path(split); |
383 | |
384 | ret = tmp.path; |
1066bd36 |
385 | |
386 | if(readlink_path) |
387 | g_free(readlink_path); |
388 | |
389 | } else { |
390 | |
391 | g_printf("%s is not a symlink! attempting to match checksums in %s...\n", OS_LOCALTIME, OS_TIMEZONE_PATH); |
03f12ac7 |
392 | hash_to_match = get_file_sha256(OS_LOCALTIME); |
393 | |
644bae40 |
394 | /* ret = lookup_hash(hash_to_match); */ |
395 | return FALSE; /* TODO fix me for real */ |
03f12ac7 |
396 | |
397 | if(hash_to_match) |
398 | g_free(hash_to_match); |
1066bd36 |
399 | } |
1a383289 |
400 | |
1066bd36 |
401 | return ret; |
28b86015 |
402 | } |
403 | |
06407d3e |
404 | /* Unix time must be in UTC. */ |
28b86015 |
405 | gboolean |
406 | our_get_local_rtc() { |
407 | |
408 | gboolean ret = FALSE; |
409 | |
410 | return ret; |
411 | } |
412 | |
413 | gboolean |
414 | our_get_can_ntp() { |
415 | |
416 | const gboolean ret = FALSE; |
417 | |
418 | return ret; |
419 | } |
420 | |
421 | gboolean |
422 | our_get_ntp() { |
423 | |
1a383289 |
424 | int system_ret; |
28b86015 |
425 | |
0e955e92 |
426 | if((system_ret = system("/etc/rc.d/ntpd check > /dev/null 2>&1")) == -1) { |
1a383289 |
427 | |
0e955e92 |
428 | g_printf("failed to check NTP\n"); |
1a383289 |
429 | return FALSE; |
430 | } |
431 | |
432 | if(system_ret) |
433 | return FALSE; |
434 | |
435 | return TRUE; |
28b86015 |
436 | } |
b6ad18ad |
437 | |
28b86015 |
438 | gboolean |
439 | our_get_ntpsynchronized() { |
440 | |
441 | const gboolean ret = FALSE; |
b6ad18ad |
442 | |
28b86015 |
443 | return ret; |
444 | } |
b6ad18ad |
445 | |
28b86015 |
446 | guint64 |
447 | our_get_time_usec() { |
b6ad18ad |
448 | |
28b86015 |
449 | guint64 ret = 0; |
b6ad18ad |
450 | |
28b86015 |
451 | return ret; |
452 | } |
453 | |
454 | guint64 |
455 | our_get_rtc_time_usec() { |
456 | |
457 | guint64 ret = 0; |
458 | |
459 | return ret; |
460 | } |
b6ad18ad |
461 | |
1ce41045 |
462 | /* --- end method/property/dbus signal code, begin bus/name handlers --- */ |
b6ad18ad |
463 | |
464 | static void timedated_on_bus_acquired(GDBusConnection *conn, |
465 | const gchar *name, |
466 | gpointer user_data) { |
467 | |
254ceec0 |
468 | g_printf("got bus/name, exporting %s's interface...\n", name); |
b6ad18ad |
469 | |
470 | timedated_interf = timedate1_skeleton_new(); |
471 | |
28b86015 |
472 | /* attach function pointers to generated struct's method handlers */ |
473 | g_signal_connect(timedated_interf, "handle-set-time", G_CALLBACK(on_handle_set_time), NULL); |
474 | g_signal_connect(timedated_interf, "handle-set-timezone", G_CALLBACK(on_handle_set_timezone), NULL); |
475 | g_signal_connect(timedated_interf, "handle-set-local-rtc", G_CALLBACK(on_handle_set_local_rtc), NULL); |
476 | g_signal_connect(timedated_interf, "handle-set-ntp", G_CALLBACK(on_handle_set_ntp), NULL); |
03f12ac7 |
477 | |
28b86015 |
478 | /* set our properties before export */ |
479 | timedate1_set_timezone(timedated_interf, our_get_timezone()); |
480 | timedate1_set_local_rtc(timedated_interf, our_get_local_rtc()); |
481 | timedate1_set_can_ntp(timedated_interf, our_get_can_ntp()); |
482 | timedate1_set_ntp(timedated_interf, our_get_ntp()); |
483 | timedate1_set_ntpsynchronized(timedated_interf, our_get_ntpsynchronized()); |
484 | timedate1_set_time_usec(timedated_interf, our_get_time_usec()); |
485 | timedate1_set_rtctime_usec(timedated_interf, our_get_rtc_time_usec()); |
486 | |
b6ad18ad |
487 | if(!g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(timedated_interf), |
488 | conn, |
489 | "/org/freedesktop/timedate1", |
490 | NULL)) { |
491 | |
509599f0 |
492 | g_printf("failed to export %s's interface!\n", name); |
493 | timedated_mem_clean(); |
494 | |
495 | } else { |
496 | |
497 | dbus_interface_exported = TRUE; |
498 | g_printf("exported %s's interface on the system bus...\n", name); |
b6ad18ad |
499 | } |
509599f0 |
500 | } |
501 | |
502 | static void timedated_on_name_acquired(GDBusConnection *conn, |
90f54407 |
503 | const gchar *name, |
509599f0 |
504 | gpointer user_data) { |
b6ad18ad |
505 | |
509599f0 |
506 | g_printf("success!\n"); |
b6ad18ad |
507 | } |
508 | |
b6ad18ad |
509 | static void timedated_on_name_lost(GDBusConnection *conn, |
510 | const gchar *name, |
511 | gpointer user_data) { |
512 | |
509599f0 |
513 | if(!conn) { |
b6ad18ad |
514 | |
509599f0 |
515 | g_printf("failed to connect to the system bus while trying to acquire name '%s': either dbus-daemon isn't running or we don't have permission to push names and/or their interfaces to it.\n", name); |
516 | timedated_mem_clean(); |
517 | } |
b6ad18ad |
518 | |
509599f0 |
519 | g_print("lost name %s, exiting...\n", name); |
520 | |
521 | timedated_mem_clean(); |
b6ad18ad |
522 | } |
523 | |
b70beb08 |
524 | /* --- end bus/name handlers, begin misc unix functions --- */ |
525 | |
509599f0 |
526 | /* safe call to clean and then exit |
527 | * this stops our GMainLoop safely before letting main() return */ |
b70beb08 |
528 | void timedated_mem_clean() { |
529 | |
341587db |
530 | g_printf("exiting...\n"); |
531 | |
532 | if(dbus_interface_exported) |
533 | g_dbus_interface_skeleton_unexport(G_DBUS_INTERFACE_SKELETON(timedated_interf)); |
534 | |
535 | if(g_main_loop_is_running(timedated_loop)) |
536 | g_main_loop_quit(timedated_loop); |
537 | |
b70beb08 |
538 | } |
539 | |
712eb329 |
540 | /* wrapper for glib's unix signal handling; called only once if terminating signal is raised against us */ |
541 | gboolean unix_sig_terminate_handler(gpointer data) { |
542 | |
543 | g_printf("caught SIGINT/HUP/TERM, exiting\n"); |
544 | |
545 | timedated_mem_clean(); |
546 | return G_SOURCE_REMOVE; |
547 | } |
548 | |
2ef2cfe1 |
549 | void set_signal_handlers() { |
550 | |
551 | /* we don't care about its descriptor, we never need to unregister these */ |
552 | g_unix_signal_add(SIGINT, unix_sig_terminate_handler, NULL); |
553 | g_unix_signal_add(SIGHUP, unix_sig_terminate_handler, NULL); |
554 | g_unix_signal_add(SIGTERM, unix_sig_terminate_handler, NULL); |
555 | } |
556 | |
1e8c7c88 |
557 | int main() { |
b6ad18ad |
558 | |
9728ae1f |
559 | set_signal_handlers(); |
560 | |
644bae40 |
561 | /*if(!build_lookup_table()) |
562 | return 1; */ |
03f12ac7 |
563 | |
90f54407 |
564 | timedated_loop = g_main_loop_new(NULL, TRUE); |
565 | timedated_freeable = g_ptr_array_new(); |
b6ad18ad |
566 | |
90f54407 |
567 | bus_descriptor = g_bus_own_name(G_BUS_TYPE_SYSTEM, |
b6ad18ad |
568 | "org.freedesktop.timedate1", |
569 | G_BUS_NAME_OWNER_FLAGS_NONE, |
570 | timedated_on_bus_acquired, |
571 | timedated_on_name_acquired, |
572 | timedated_on_name_lost, |
573 | NULL, |
574 | NULL); |
575 | |
90f54407 |
576 | g_main_loop_run(timedated_loop); |
9728ae1f |
577 | /* runs until single g_main_loop_quit() call is raised inside <interface>_mem_clean() */ |
90f54407 |
578 | g_main_loop_unref(timedated_loop); |
b6ad18ad |
579 | |
9728ae1f |
580 | /* guaranteed unownable */ |
90f54407 |
581 | g_bus_unown_name(bus_descriptor); |
b6ad18ad |
582 | |
9728ae1f |
583 | /* at this point no operations can occur with our data, it is safe to free it + its container */ |
584 | g_ptr_array_free(timedated_freeable, TRUE); |
b6ad18ad |
585 | |
90f54407 |
586 | return 0; |
1e8c7c88 |
587 | } |
1066bd36 |
588 | |
03f12ac7 |
589 | static struct timezone_checksum_pair parse_timezone_path(gchar **pair) { |
1066bd36 |
590 | |
03f12ac7 |
591 | gchar *prefix_pattern, *right_prefix_pattern, *posix_prefix_pattern, *lean_path; |
1066bd36 |
592 | GRegex *prefix, *posix, *right; |
593 | GError *err = NULL; |
03f12ac7 |
594 | struct timezone_checksum_pair ret = { NULL, NULL, FALSE, FALSE }; |
1066bd36 |
595 | |
03f12ac7 |
596 | if(!pair[0]) |
597 | return ret; |
1066bd36 |
598 | |
599 | prefix_pattern = (gchar *) g_malloc0(4096); |
03f12ac7 |
600 | right_prefix_pattern = (gchar *) g_malloc0(4096); |
601 | posix_prefix_pattern = (gchar *) g_malloc0(4096); |
602 | |
603 | g_sprintf(prefix_pattern, "%s/", OS_TIMEZONE_PATH); |
604 | g_sprintf(posix_prefix_pattern, "%s/posix/", OS_TIMEZONE_PATH); |
605 | g_sprintf(right_prefix_pattern, "%s/right/", OS_TIMEZONE_PATH); |
1066bd36 |
606 | |
607 | prefix = g_regex_new(prefix_pattern, 0, 0, &err); |
03f12ac7 |
608 | posix = g_regex_new(posix_prefix_pattern, 0, 0, &err); |
609 | right = g_regex_new(right_prefix_pattern, 0, 0, &err); |
610 | |
611 | if(g_regex_match_full(posix, pair[0], -1, 0, G_REGEX_MATCH_NOTEMPTY, NULL, NULL)) { |
612 | |
613 | ret.posix = TRUE; |
614 | lean_path = g_regex_replace_literal(posix, pair[0], -1, 0, "", G_REGEX_MATCH_NOTEMPTY, NULL); |
615 | |
616 | } else if(g_regex_match_full(right, pair[0], -1, 0, G_REGEX_MATCH_NOTEMPTY, NULL, NULL)) { |
617 | |
618 | ret.right = TRUE; |
619 | lean_path = g_regex_replace_literal(right, pair[0], -1, 0, "", G_REGEX_MATCH_NOTEMPTY, NULL); |
620 | |
621 | } else |
622 | lean_path = g_regex_replace_literal(prefix, pair[0], -1, 0, "", G_REGEX_MATCH_NOTEMPTY, NULL); |
623 | |
624 | ret.path = lean_path; |
625 | |
626 | ret.sum = g_malloc0(256); |
627 | g_strlcpy(ret.sum, pair[1], 66); |
1066bd36 |
628 | |
629 | g_regex_unref(prefix); |
630 | g_regex_unref(right); |
631 | g_regex_unref(posix); |
632 | |
03f12ac7 |
633 | return ret; |
634 | } |
635 | |
644bae40 |
636 | /* TODO need to deconstruct tz_table on exit |
03f12ac7 |
637 | static gboolean build_lookup_table() { |
638 | |
639 | gchar *find_cmd, **map_pairs, *find_output, *path_buf, *sum_buf, **entry_buf; |
640 | GError *err; |
641 | gboolean ret; |
642 | gint i; |
643 | |
644 | i = 0; |
645 | err = NULL; |
646 | ret = TRUE; |
647 | |
648 | find_cmd = (gchar *) g_malloc0(4096); |
649 | find_output = (gchar *) g_malloc0(1000000); |
650 | |
651 | g_sprintf(find_cmd, "/bin/sh -c \"find %s -type f -exec cksum -a sha256 {} \\; | sed -E 's/SHA256 \\(//g' | sed -E 's/\\) = /=/g'\"", OS_TIMEZONE_PATH); |
652 | |
653 | if(!g_spawn_command_line_sync(find_cmd, &find_output, NULL, NULL, &err)) { |
654 | |
655 | g_printf("error running `%s`\n", find_cmd); |
656 | ret = FALSE; |
657 | } |
658 | |
659 | map_pairs = g_strsplit(find_output, "\n", INT_MAX); |
660 | |
661 | while(map_pairs[i] && (entry_buf = g_strsplit(map_pairs[i], "=", INT_MAX))) { |
662 | |
663 | tz_table[i] = parse_timezone_path(entry_buf); |
664 | |
665 | g_strfreev(entry_buf); |
666 | i++; |
667 | } |
668 | |
669 | g_free(find_output); |
670 | g_free(find_cmd); |
671 | g_free(map_pairs); |
672 | |
673 | return ret; |
674 | } |
675 | |
676 | static gchar *lookup_hash(gchar *hash) { |
677 | |
678 | gint i = 0; |
679 | |
680 | while(tz_table[i].sum) |
681 | if(!g_strcmp0(tz_table[i].sum, hash)) |
682 | return tz_table[i].path; |
683 | else |
684 | i++; |
685 | |
686 | return NULL; |
644bae40 |
687 | }*/ |
688 | |
689 | /* takes number of microseconds since epoch and returns a |
690 | * ptr to a timespec suitable to be passed to clock_settime(3) |
691 | */ |
692 | static struct timespec* mktimespec(gint64 us) { |
693 | |
694 | long nanoseconds; |
695 | time_t seconds; |
696 | |
697 | gint64 div_buf_remainder, div_buf_s, div_buf_ns; |
698 | struct timespec *ret; |
699 | |
700 | div_buf_s = (us / 1000000); /* us / 10^6 = s */ |
701 | div_buf_remainder = (us % 1000000); /* fraction of second lost from prev. line */ |
702 | div_buf_ns = div_buf_remainder * 1000; /* us * 10^3 = ns */ |
703 | |
704 | seconds = (time_t) div_buf_s; /* porting note: most systems use 32 bit time, adjust accordingly */ |
705 | nanoseconds = (long) div_buf_ns; |
706 | |
707 | ret = (struct timespec *) calloc(1, sizeof(struct timespec)); |
708 | |
709 | ret->tv_sec = seconds; |
710 | ret->tv_nsec = nanoseconds; |
711 | |
712 | g_ptr_array_add(timedated_freeable, ret); |
713 | |
714 | return ret; |
1066bd36 |
715 | } |