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complete setNTP method, calls rcctl(8) through system(3)
[systembsd.git] / src / interfaces / timedated / timedated.c
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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 41GPtrArray *timedated_freeable;
42Timedate1 *timedated_interf;
43
c12c41f4 44GMainLoop *timedated_loop;
45
46guint bus_descriptor;
47gboolean dbus_interface_exported; /* reliable because of gdbus operational guarantees */
48
03f12ac7 49const gchar *OS_LOCALTIME = "/etc/localtime"; /* current timezone file */
50const gchar *OS_TIMEZONE_PATH = "/usr/share/zoneinfo"; /* path to system timezone files */
51
52struct timezone_checksum_pair {
53
54 gchar *path;
55 gchar *sum;
56 gboolean posix;
57 gboolean right;
58};
59
60static struct timezone_checksum_pair tz_table[5000];
1066bd36 61
1ce41045 62/* --- begin method/property/dbus signal code --- */
b6ad18ad 63
28b86015 64static gboolean
a8f71719 65on_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 165static gboolean
a8f71719 166on_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
268static gboolean
a8f71719 269on_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
278static gboolean
a8f71719 279on_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
289 gint ntpd_notrunning, ntpd_notenabled; /* this logic flip is due to rcctl returning 0 on success,
290 * in this case an error means ntpd is not running or not enabled */
291 gboolean proposed_ntpstate;
292 GError *sh_errors;
293
294 extern int errno;
295
296 params = g_dbus_method_invocation_get_parameters(invoc);
297 g_variant_get(params, "(bb)", &proposed_ntpstate, &policykit_auth);
298 bus_name = g_dbus_method_invocation_get_sender(invoc);
299
300 is_authed = polkit_try_auth(bus_name, "org.freedesktop.timedate1.set-ntp", policykit_auth);
301
302 switch(is_authed) {
303
304 case AUTHORIZED_NATIVELY:
305 case AUTHORIZED_BY_PROMPT:
306 break;
307
308 case UNAUTHORIZED_NATIVELY:
309 case UNAUTHORIZED_FAILED_PROMPT:
310 g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EACCES", "Insufficient permissions to toggle the NTP daemon.");
311 return FALSE;
312
313 case ERROR_BADBUS:
314 g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EFAULT", "Provided bus name is invalid.");
315 return FALSE;
316
317 case ERROR_BADACTION:
318 g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EFAULT", "Provided action ID is invalid.");
319 return FALSE;
320
321 case ERROR_GENERIC:
322 default:
323 g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.ECANCELED", "Failed to toggle the NTP daemon for unknown reasons.");
324 return FALSE;
325 }
326
327 ntpd_notrunning = 0; /* GLib does not bother asserting the passed return value int to zero */
328 ntpd_notenabled = 0; /* if the program's exit status is also zero, hence this decl. */
329
330 if((ntpd_notrunning = system("rcctl check ntpd > /dev/null 2>&1")) == -1)
331 return FALSE;
332
333 if((ntpd_notenabled = system("rcctl status ntpd > /dev/null 2>&1")) == -1)
334 return FALSE;
335
336 if(proposed_ntpstate) {
337
338 if(ntpd_notrunning)
339 system("rcctl -f start ntpd > /dev/null 2>&1");
340
341 if(ntpd_notenabled)
342 system("rcctl enable ntpd > /dev/null 2>&1");
343
344 } else {
345
346 if(!ntpd_notrunning)
347 system("rcctl stop ntpd > /dev/null 2>&1");
348
349 if(!ntpd_notenabled)
350 system("rcctl disable ntpd > /dev/null 2>&1");
351 }
352
353 timedate1_complete_set_ntp(td1_passed_interf, invoc);
354
355 return TRUE;
28b86015 356}
357
358const gchar *
359our_get_timezone() {
360
1066bd36 361 GStatBuf *stat_zoneinfo;
03f12ac7 362 gchar *find_cmd, *readlink_path, *ret, *argvp, *hash_to_match;
363 gint argcp;
364 GError *err;
365 struct timezone_checksum_pair tmp;
1066bd36 366
03f12ac7 367 find_cmd = (gchar *) g_malloc0(2048);
368 stat_zoneinfo = (GStatBuf *) g_malloc0(8192);
369 err = (GError *) g_malloc0(2048);
1066bd36 370
371 if(g_stat(OS_LOCALTIME, stat_zoneinfo)) {
372
373 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);
374 ret = NULL;
375
376 } else if(g_file_test(OS_LOCALTIME, G_FILE_TEST_IS_SYMLINK)) {
377
378 readlink_path = g_file_read_link(OS_LOCALTIME, &err);
03f12ac7 379
380 gchar *split[2] = { readlink_path, "" };
381 tmp = parse_timezone_path(split);
382
383 ret = tmp.path;
1066bd36 384
385 if(readlink_path)
386 g_free(readlink_path);
387
388 } else {
389
390 g_printf("%s is not a symlink! attempting to match checksums in %s...\n", OS_LOCALTIME, OS_TIMEZONE_PATH);
03f12ac7 391 hash_to_match = get_file_sha256(OS_LOCALTIME);
392
644bae40 393 /* ret = lookup_hash(hash_to_match); */
394 return FALSE; /* TODO fix me for real */
03f12ac7 395
396 if(hash_to_match)
397 g_free(hash_to_match);
1066bd36 398 }
399
c8a3e18e 400
401
1066bd36 402 return ret;
28b86015 403}
404
06407d3e 405/* Unix time must be in UTC. */
28b86015 406gboolean
407our_get_local_rtc() {
408
409 gboolean ret = FALSE;
410
411 return ret;
412}
413
414gboolean
415our_get_can_ntp() {
416
417 const gboolean ret = FALSE;
418
419 return ret;
420}
421
422gboolean
423our_get_ntp() {
424
425 const gboolean ret = FALSE;
426
427 return ret;
428}
b6ad18ad 429
28b86015 430gboolean
431our_get_ntpsynchronized() {
432
433 const gboolean ret = FALSE;
b6ad18ad 434
28b86015 435 return ret;
436}
b6ad18ad 437
28b86015 438guint64
439our_get_time_usec() {
b6ad18ad 440
28b86015 441 guint64 ret = 0;
b6ad18ad 442
28b86015 443 return ret;
444}
445
446guint64
447our_get_rtc_time_usec() {
448
449 guint64 ret = 0;
450
451 return ret;
452}
b6ad18ad 453
1ce41045 454/* --- end method/property/dbus signal code, begin bus/name handlers --- */
b6ad18ad 455
456static void timedated_on_bus_acquired(GDBusConnection *conn,
457 const gchar *name,
458 gpointer user_data) {
459
254ceec0 460 g_printf("got bus/name, exporting %s's interface...\n", name);
b6ad18ad 461
462 timedated_interf = timedate1_skeleton_new();
463
28b86015 464 /* attach function pointers to generated struct's method handlers */
465 g_signal_connect(timedated_interf, "handle-set-time", G_CALLBACK(on_handle_set_time), NULL);
466 g_signal_connect(timedated_interf, "handle-set-timezone", G_CALLBACK(on_handle_set_timezone), NULL);
467 g_signal_connect(timedated_interf, "handle-set-local-rtc", G_CALLBACK(on_handle_set_local_rtc), NULL);
468 g_signal_connect(timedated_interf, "handle-set-ntp", G_CALLBACK(on_handle_set_ntp), NULL);
03f12ac7 469
28b86015 470 /* set our properties before export */
471 timedate1_set_timezone(timedated_interf, our_get_timezone());
472 timedate1_set_local_rtc(timedated_interf, our_get_local_rtc());
473 timedate1_set_can_ntp(timedated_interf, our_get_can_ntp());
474 timedate1_set_ntp(timedated_interf, our_get_ntp());
475 timedate1_set_ntpsynchronized(timedated_interf, our_get_ntpsynchronized());
476 timedate1_set_time_usec(timedated_interf, our_get_time_usec());
477 timedate1_set_rtctime_usec(timedated_interf, our_get_rtc_time_usec());
478
b6ad18ad 479 if(!g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(timedated_interf),
480 conn,
481 "/org/freedesktop/timedate1",
482 NULL)) {
483
509599f0 484 g_printf("failed to export %s's interface!\n", name);
485 timedated_mem_clean();
486
487 } else {
488
489 dbus_interface_exported = TRUE;
490 g_printf("exported %s's interface on the system bus...\n", name);
b6ad18ad 491 }
509599f0 492}
493
494static void timedated_on_name_acquired(GDBusConnection *conn,
90f54407 495 const gchar *name,
509599f0 496 gpointer user_data) {
b6ad18ad 497
509599f0 498 g_printf("success!\n");
b6ad18ad 499}
500
b6ad18ad 501static void timedated_on_name_lost(GDBusConnection *conn,
502 const gchar *name,
503 gpointer user_data) {
504
509599f0 505 if(!conn) {
b6ad18ad 506
509599f0 507 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);
508 timedated_mem_clean();
509 }
b6ad18ad 510
509599f0 511 g_print("lost name %s, exiting...\n", name);
512
513 timedated_mem_clean();
b6ad18ad 514}
515
b70beb08 516/* --- end bus/name handlers, begin misc unix functions --- */
517
509599f0 518/* safe call to clean and then exit
519 * this stops our GMainLoop safely before letting main() return */
b70beb08 520void timedated_mem_clean() {
521
341587db 522 g_printf("exiting...\n");
523
524 if(dbus_interface_exported)
525 g_dbus_interface_skeleton_unexport(G_DBUS_INTERFACE_SKELETON(timedated_interf));
526
527 if(g_main_loop_is_running(timedated_loop))
528 g_main_loop_quit(timedated_loop);
529
b70beb08 530}
531
712eb329 532/* wrapper for glib's unix signal handling; called only once if terminating signal is raised against us */
533gboolean unix_sig_terminate_handler(gpointer data) {
534
535 g_printf("caught SIGINT/HUP/TERM, exiting\n");
536
537 timedated_mem_clean();
538 return G_SOURCE_REMOVE;
539}
540
2ef2cfe1 541void set_signal_handlers() {
542
543 /* we don't care about its descriptor, we never need to unregister these */
544 g_unix_signal_add(SIGINT, unix_sig_terminate_handler, NULL);
545 g_unix_signal_add(SIGHUP, unix_sig_terminate_handler, NULL);
546 g_unix_signal_add(SIGTERM, unix_sig_terminate_handler, NULL);
547}
548
1e8c7c88 549int main() {
b6ad18ad 550
9728ae1f 551 set_signal_handlers();
552
644bae40 553 /*if(!build_lookup_table())
554 return 1; */
03f12ac7 555
90f54407 556 timedated_loop = g_main_loop_new(NULL, TRUE);
557 timedated_freeable = g_ptr_array_new();
b6ad18ad 558
90f54407 559 bus_descriptor = g_bus_own_name(G_BUS_TYPE_SYSTEM,
b6ad18ad 560 "org.freedesktop.timedate1",
561 G_BUS_NAME_OWNER_FLAGS_NONE,
562 timedated_on_bus_acquired,
563 timedated_on_name_acquired,
564 timedated_on_name_lost,
565 NULL,
566 NULL);
567
90f54407 568 g_main_loop_run(timedated_loop);
9728ae1f 569 /* runs until single g_main_loop_quit() call is raised inside <interface>_mem_clean() */
90f54407 570 g_main_loop_unref(timedated_loop);
b6ad18ad 571
9728ae1f 572 /* guaranteed unownable */
90f54407 573 g_bus_unown_name(bus_descriptor);
b6ad18ad 574
9728ae1f 575 /* at this point no operations can occur with our data, it is safe to free it + its container */
576 g_ptr_array_free(timedated_freeable, TRUE);
b6ad18ad 577
90f54407 578 return 0;
1e8c7c88 579}
1066bd36 580
03f12ac7 581static struct timezone_checksum_pair parse_timezone_path(gchar **pair) {
1066bd36 582
03f12ac7 583 gchar *prefix_pattern, *right_prefix_pattern, *posix_prefix_pattern, *lean_path;
1066bd36 584 GRegex *prefix, *posix, *right;
585 GError *err = NULL;
03f12ac7 586 struct timezone_checksum_pair ret = { NULL, NULL, FALSE, FALSE };
1066bd36 587
03f12ac7 588 if(!pair[0])
589 return ret;
1066bd36 590
591 prefix_pattern = (gchar *) g_malloc0(4096);
03f12ac7 592 right_prefix_pattern = (gchar *) g_malloc0(4096);
593 posix_prefix_pattern = (gchar *) g_malloc0(4096);
594
595 g_sprintf(prefix_pattern, "%s/", OS_TIMEZONE_PATH);
596 g_sprintf(posix_prefix_pattern, "%s/posix/", OS_TIMEZONE_PATH);
597 g_sprintf(right_prefix_pattern, "%s/right/", OS_TIMEZONE_PATH);
1066bd36 598
599 prefix = g_regex_new(prefix_pattern, 0, 0, &err);
03f12ac7 600 posix = g_regex_new(posix_prefix_pattern, 0, 0, &err);
601 right = g_regex_new(right_prefix_pattern, 0, 0, &err);
602
603 if(g_regex_match_full(posix, pair[0], -1, 0, G_REGEX_MATCH_NOTEMPTY, NULL, NULL)) {
604
605 ret.posix = TRUE;
606 lean_path = g_regex_replace_literal(posix, pair[0], -1, 0, "", G_REGEX_MATCH_NOTEMPTY, NULL);
607
608 } else if(g_regex_match_full(right, pair[0], -1, 0, G_REGEX_MATCH_NOTEMPTY, NULL, NULL)) {
609
610 ret.right = TRUE;
611 lean_path = g_regex_replace_literal(right, pair[0], -1, 0, "", G_REGEX_MATCH_NOTEMPTY, NULL);
612
613 } else
614 lean_path = g_regex_replace_literal(prefix, pair[0], -1, 0, "", G_REGEX_MATCH_NOTEMPTY, NULL);
615
616 ret.path = lean_path;
617
618 ret.sum = g_malloc0(256);
619 g_strlcpy(ret.sum, pair[1], 66);
1066bd36 620
621 g_regex_unref(prefix);
622 g_regex_unref(right);
623 g_regex_unref(posix);
624
03f12ac7 625 return ret;
626}
627
644bae40 628/* TODO need to deconstruct tz_table on exit
03f12ac7 629static gboolean build_lookup_table() {
630
631 gchar *find_cmd, **map_pairs, *find_output, *path_buf, *sum_buf, **entry_buf;
632 GError *err;
633 gboolean ret;
634 gint i;
635
636 i = 0;
637 err = NULL;
638 ret = TRUE;
639
640 find_cmd = (gchar *) g_malloc0(4096);
641 find_output = (gchar *) g_malloc0(1000000);
642
643 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);
644
645 if(!g_spawn_command_line_sync(find_cmd, &find_output, NULL, NULL, &err)) {
646
647 g_printf("error running `%s`\n", find_cmd);
648 ret = FALSE;
649 }
650
651 map_pairs = g_strsplit(find_output, "\n", INT_MAX);
652
653 while(map_pairs[i] && (entry_buf = g_strsplit(map_pairs[i], "=", INT_MAX))) {
654
655 tz_table[i] = parse_timezone_path(entry_buf);
656
657 g_strfreev(entry_buf);
658 i++;
659 }
660
661 g_free(find_output);
662 g_free(find_cmd);
663 g_free(map_pairs);
664
665 return ret;
666}
667
668static gchar *lookup_hash(gchar *hash) {
669
670 gint i = 0;
671
672 while(tz_table[i].sum)
673 if(!g_strcmp0(tz_table[i].sum, hash))
674 return tz_table[i].path;
675 else
676 i++;
677
678 return NULL;
644bae40 679}*/
680
681/* takes number of microseconds since epoch and returns a
682 * ptr to a timespec suitable to be passed to clock_settime(3)
683 */
684static struct timespec* mktimespec(gint64 us) {
685
686 long nanoseconds;
687 time_t seconds;
688
689 gint64 div_buf_remainder, div_buf_s, div_buf_ns;
690 struct timespec *ret;
691
692 div_buf_s = (us / 1000000); /* us / 10^6 = s */
693 div_buf_remainder = (us % 1000000); /* fraction of second lost from prev. line */
694 div_buf_ns = div_buf_remainder * 1000; /* us * 10^3 = ns */
695
696 seconds = (time_t) div_buf_s; /* porting note: most systems use 32 bit time, adjust accordingly */
697 nanoseconds = (long) div_buf_ns;
698
699 ret = (struct timespec *) calloc(1, sizeof(struct timespec));
700
701 ret->tv_sec = seconds;
702 ret->tv_nsec = nanoseconds;
703
704 g_ptr_array_add(timedated_freeable, ret);
705
706 return ret;
1066bd36 707}
google summer of code 2014 project