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property cleanups
[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
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}
5b56a1e8 358/* NOTE: you should be using gobject->set_property() for these ! */
28b86015 359const gchar *
360our_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
5b56a1e8 404/* Unix time is in UTC. */
28b86015 405gboolean
406our_get_local_rtc() {
407
5b56a1e8 408 return FALSE;
28b86015 409}
410
411gboolean
412our_get_can_ntp() {
413
5b56a1e8 414 /* ntpd is part of the default install */
28b86015 415
5b56a1e8 416 return TRUE;
28b86015 417}
418
419gboolean
420our_get_ntp() {
421
1a383289 422 int system_ret;
28b86015 423
5b56a1e8 424 system_ret = system("/etc/rc.d/ntpd check > /dev/null 2>&1");
1a383289 425
426 if(system_ret)
427 return FALSE;
428
429 return TRUE;
28b86015 430}
b6ad18ad 431
5b56a1e8 432/* undocumented feature present in systemd */
28b86015 433gboolean
434our_get_ntpsynchronized() {
435
5b56a1e8 436 gboolean ntp;
437 ntp = our_get_ntp();
b6ad18ad 438
5b56a1e8 439 return ntp;
28b86015 440}
b6ad18ad 441
5b56a1e8 442/* undocumented feature present in systemd */
28b86015 443guint64
444our_get_time_usec() {
b6ad18ad 445
28b86015 446 guint64 ret = 0;
b6ad18ad 447
28b86015 448 return ret;
449}
450
5b56a1e8 451/* undocumented feature present in systemd */
28b86015 452guint64
453our_get_rtc_time_usec() {
454
455 guint64 ret = 0;
456
457 return ret;
458}
b6ad18ad 459
1ce41045 460/* --- end method/property/dbus signal code, begin bus/name handlers --- */
b6ad18ad 461
462static void timedated_on_bus_acquired(GDBusConnection *conn,
463 const gchar *name,
464 gpointer user_data) {
465
254ceec0 466 g_printf("got bus/name, exporting %s's interface...\n", name);
b6ad18ad 467
468 timedated_interf = timedate1_skeleton_new();
469
28b86015 470 /* attach function pointers to generated struct's method handlers */
471 g_signal_connect(timedated_interf, "handle-set-time", G_CALLBACK(on_handle_set_time), NULL);
472 g_signal_connect(timedated_interf, "handle-set-timezone", G_CALLBACK(on_handle_set_timezone), NULL);
473 g_signal_connect(timedated_interf, "handle-set-local-rtc", G_CALLBACK(on_handle_set_local_rtc), NULL);
474 g_signal_connect(timedated_interf, "handle-set-ntp", G_CALLBACK(on_handle_set_ntp), NULL);
03f12ac7 475
28b86015 476 /* set our properties before export */
5b56a1e8 477
28b86015 478 timedate1_set_timezone(timedated_interf, our_get_timezone());
479 timedate1_set_local_rtc(timedated_interf, our_get_local_rtc());
480 timedate1_set_can_ntp(timedated_interf, our_get_can_ntp());
481 timedate1_set_ntp(timedated_interf, our_get_ntp());
482 timedate1_set_ntpsynchronized(timedated_interf, our_get_ntpsynchronized());
483 timedate1_set_time_usec(timedated_interf, our_get_time_usec());
484 timedate1_set_rtctime_usec(timedated_interf, our_get_rtc_time_usec());
485
5b56a1e8 486 /* WIP
487
488 timedated_interf->get_timezone = our_get_timezone();
489 timedated_interf->get_local_rtc = our_get_local_rtc();
490 timedated_interf->get_can_ntp = our_get_can_ntp();
491 timedated_interf->get_ntp = our_get_ntp();
492 timedated_interf->get_ntpsynchronized = our_get_ntpsynchronized();
493 timedated_interf->get_time_usec = our_get_time_usec();
494 timedated_interf->get_rtctime_usec = our_get_rtc_time_usec(); */
495
b6ad18ad 496 if(!g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(timedated_interf),
497 conn,
498 "/org/freedesktop/timedate1",
499 NULL)) {
500
509599f0 501 g_printf("failed to export %s's interface!\n", name);
502 timedated_mem_clean();
503
504 } else {
505
506 dbus_interface_exported = TRUE;
507 g_printf("exported %s's interface on the system bus...\n", name);
b6ad18ad 508 }
509599f0 509}
510
511static void timedated_on_name_acquired(GDBusConnection *conn,
90f54407 512 const gchar *name,
509599f0 513 gpointer user_data) {
b6ad18ad 514
509599f0 515 g_printf("success!\n");
b6ad18ad 516}
517
b6ad18ad 518static void timedated_on_name_lost(GDBusConnection *conn,
519 const gchar *name,
520 gpointer user_data) {
521
509599f0 522 if(!conn) {
b6ad18ad 523
509599f0 524 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);
525 timedated_mem_clean();
526 }
b6ad18ad 527
509599f0 528 g_print("lost name %s, exiting...\n", name);
529
530 timedated_mem_clean();
b6ad18ad 531}
532
b70beb08 533/* --- end bus/name handlers, begin misc unix functions --- */
534
509599f0 535/* safe call to clean and then exit
536 * this stops our GMainLoop safely before letting main() return */
b70beb08 537void timedated_mem_clean() {
538
341587db 539 g_printf("exiting...\n");
540
541 if(dbus_interface_exported)
542 g_dbus_interface_skeleton_unexport(G_DBUS_INTERFACE_SKELETON(timedated_interf));
543
544 if(g_main_loop_is_running(timedated_loop))
545 g_main_loop_quit(timedated_loop);
546
b70beb08 547}
548
712eb329 549/* wrapper for glib's unix signal handling; called only once if terminating signal is raised against us */
550gboolean unix_sig_terminate_handler(gpointer data) {
551
552 g_printf("caught SIGINT/HUP/TERM, exiting\n");
553
554 timedated_mem_clean();
555 return G_SOURCE_REMOVE;
556}
557
2ef2cfe1 558void set_signal_handlers() {
559
560 /* we don't care about its descriptor, we never need to unregister these */
561 g_unix_signal_add(SIGINT, unix_sig_terminate_handler, NULL);
562 g_unix_signal_add(SIGHUP, unix_sig_terminate_handler, NULL);
563 g_unix_signal_add(SIGTERM, unix_sig_terminate_handler, NULL);
564}
565
1e8c7c88 566int main() {
b6ad18ad 567
9728ae1f 568 set_signal_handlers();
569
644bae40 570 /*if(!build_lookup_table())
571 return 1; */
03f12ac7 572
90f54407 573 timedated_loop = g_main_loop_new(NULL, TRUE);
574 timedated_freeable = g_ptr_array_new();
b6ad18ad 575
90f54407 576 bus_descriptor = g_bus_own_name(G_BUS_TYPE_SYSTEM,
b6ad18ad 577 "org.freedesktop.timedate1",
578 G_BUS_NAME_OWNER_FLAGS_NONE,
579 timedated_on_bus_acquired,
580 timedated_on_name_acquired,
581 timedated_on_name_lost,
582 NULL,
583 NULL);
584
90f54407 585 g_main_loop_run(timedated_loop);
9728ae1f 586 /* runs until single g_main_loop_quit() call is raised inside <interface>_mem_clean() */
90f54407 587 g_main_loop_unref(timedated_loop);
b6ad18ad 588
9728ae1f 589 /* guaranteed unownable */
90f54407 590 g_bus_unown_name(bus_descriptor);
b6ad18ad 591
9728ae1f 592 /* at this point no operations can occur with our data, it is safe to free it + its container */
593 g_ptr_array_free(timedated_freeable, TRUE);
b6ad18ad 594
90f54407 595 return 0;
1e8c7c88 596}
1066bd36 597
03f12ac7 598static struct timezone_checksum_pair parse_timezone_path(gchar **pair) {
1066bd36 599
03f12ac7 600 gchar *prefix_pattern, *right_prefix_pattern, *posix_prefix_pattern, *lean_path;
1066bd36 601 GRegex *prefix, *posix, *right;
602 GError *err = NULL;
03f12ac7 603 struct timezone_checksum_pair ret = { NULL, NULL, FALSE, FALSE };
1066bd36 604
03f12ac7 605 if(!pair[0])
606 return ret;
1066bd36 607
608 prefix_pattern = (gchar *) g_malloc0(4096);
03f12ac7 609 right_prefix_pattern = (gchar *) g_malloc0(4096);
610 posix_prefix_pattern = (gchar *) g_malloc0(4096);
611
612 g_sprintf(prefix_pattern, "%s/", OS_TIMEZONE_PATH);
613 g_sprintf(posix_prefix_pattern, "%s/posix/", OS_TIMEZONE_PATH);
614 g_sprintf(right_prefix_pattern, "%s/right/", OS_TIMEZONE_PATH);
1066bd36 615
616 prefix = g_regex_new(prefix_pattern, 0, 0, &err);
03f12ac7 617 posix = g_regex_new(posix_prefix_pattern, 0, 0, &err);
618 right = g_regex_new(right_prefix_pattern, 0, 0, &err);
619
620 if(g_regex_match_full(posix, pair[0], -1, 0, G_REGEX_MATCH_NOTEMPTY, NULL, NULL)) {
621
622 ret.posix = TRUE;
623 lean_path = g_regex_replace_literal(posix, pair[0], -1, 0, "", G_REGEX_MATCH_NOTEMPTY, NULL);
624
625 } else if(g_regex_match_full(right, pair[0], -1, 0, G_REGEX_MATCH_NOTEMPTY, NULL, NULL)) {
626
627 ret.right = TRUE;
628 lean_path = g_regex_replace_literal(right, pair[0], -1, 0, "", G_REGEX_MATCH_NOTEMPTY, NULL);
629
630 } else
631 lean_path = g_regex_replace_literal(prefix, pair[0], -1, 0, "", G_REGEX_MATCH_NOTEMPTY, NULL);
632
633 ret.path = lean_path;
634
635 ret.sum = g_malloc0(256);
636 g_strlcpy(ret.sum, pair[1], 66);
1066bd36 637
638 g_regex_unref(prefix);
639 g_regex_unref(right);
640 g_regex_unref(posix);
641
03f12ac7 642 return ret;
643}
644
644bae40 645/* TODO need to deconstruct tz_table on exit
03f12ac7 646static gboolean build_lookup_table() {
647
648 gchar *find_cmd, **map_pairs, *find_output, *path_buf, *sum_buf, **entry_buf;
649 GError *err;
650 gboolean ret;
651 gint i;
652
653 i = 0;
654 err = NULL;
655 ret = TRUE;
656
657 find_cmd = (gchar *) g_malloc0(4096);
658 find_output = (gchar *) g_malloc0(1000000);
659
660 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);
661
662 if(!g_spawn_command_line_sync(find_cmd, &find_output, NULL, NULL, &err)) {
663
664 g_printf("error running `%s`\n", find_cmd);
665 ret = FALSE;
666 }
667
668 map_pairs = g_strsplit(find_output, "\n", INT_MAX);
669
670 while(map_pairs[i] && (entry_buf = g_strsplit(map_pairs[i], "=", INT_MAX))) {
671
672 tz_table[i] = parse_timezone_path(entry_buf);
673
674 g_strfreev(entry_buf);
675 i++;
676 }
677
678 g_free(find_output);
679 g_free(find_cmd);
680 g_free(map_pairs);
681
682 return ret;
683}
684
685static gchar *lookup_hash(gchar *hash) {
686
687 gint i = 0;
688
689 while(tz_table[i].sum)
690 if(!g_strcmp0(tz_table[i].sum, hash))
691 return tz_table[i].path;
692 else
693 i++;
694
695 return NULL;
644bae40 696}*/
697
698/* takes number of microseconds since epoch and returns a
699 * ptr to a timespec suitable to be passed to clock_settime(3)
700 */
701static struct timespec* mktimespec(gint64 us) {
702
703 long nanoseconds;
704 time_t seconds;
705
706 gint64 div_buf_remainder, div_buf_s, div_buf_ns;
707 struct timespec *ret;
708
709 div_buf_s = (us / 1000000); /* us / 10^6 = s */
710 div_buf_remainder = (us % 1000000); /* fraction of second lost from prev. line */
711 div_buf_ns = div_buf_remainder * 1000; /* us * 10^3 = ns */
712
713 seconds = (time_t) div_buf_s; /* porting note: most systems use 32 bit time, adjust accordingly */
714 nanoseconds = (long) div_buf_ns;
715
716 ret = (struct timespec *) calloc(1, sizeof(struct timespec));
717
718 ret->tv_sec = seconds;
719 ret->tv_nsec = nanoseconds;
720
721 g_ptr_array_add(timedated_freeable, ret);
722
723 return ret;
1066bd36 724}
google summer of code 2014 project