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Commit | Line | Data |
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36697dc0 LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2012 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
11c3a366 | 20 | #include <alloca.h> |
9dfa81a0 | 21 | #include <ctype.h> |
11c3a366 | 22 | #include <errno.h> |
c0aebb4b | 23 | #include <limits.h> |
11c3a366 TA |
24 | #include <stddef.h> |
25 | #include <stdio.h> | |
36697dc0 LP |
26 | #include <stdlib.h> |
27 | #include <string.h> | |
11c3a366 | 28 | #include <time.h> |
36697dc0 | 29 | |
b5efdb8a | 30 | #include "alloc-util.h" |
36697dc0 | 31 | #include "calendarspec.h" |
0d39fa9c | 32 | #include "fileio.h" |
11c3a366 | 33 | #include "macro.h" |
93cc7779 | 34 | #include "parse-util.h" |
cf0fbc49 | 35 | #include "string-util.h" |
36697dc0 | 36 | |
a2eb5ea7 DC |
37 | #define BITS_WEEKDAYS 127 |
38 | #define MIN_YEAR 1970 | |
39 | #define MAX_YEAR 2199 | |
489464d0 | 40 | |
36697dc0 LP |
41 | static void free_chain(CalendarComponent *c) { |
42 | CalendarComponent *n; | |
43 | ||
44 | while (c) { | |
45 | n = c->next; | |
46 | free(c); | |
47 | c = n; | |
48 | } | |
49 | } | |
50 | ||
51 | void calendar_spec_free(CalendarSpec *c) { | |
0b76b4d8 LP |
52 | |
53 | if (!c) | |
54 | return; | |
36697dc0 LP |
55 | |
56 | free_chain(c->year); | |
57 | free_chain(c->month); | |
58 | free_chain(c->day); | |
59 | free_chain(c->hour); | |
60 | free_chain(c->minute); | |
436dd70f | 61 | free_chain(c->microsecond); |
36697dc0 LP |
62 | |
63 | free(c); | |
64 | } | |
65 | ||
66 | static int component_compare(const void *_a, const void *_b) { | |
67 | CalendarComponent * const *a = _a, * const *b = _b; | |
68 | ||
e78fce48 | 69 | if ((*a)->start < (*b)->start) |
36697dc0 | 70 | return -1; |
e78fce48 | 71 | if ((*a)->start > (*b)->start) |
36697dc0 LP |
72 | return 1; |
73 | ||
e78fce48 | 74 | if ((*a)->stop < (*b)->stop) |
a2eb5ea7 | 75 | return -1; |
e78fce48 | 76 | if ((*a)->stop > (*b)->stop) |
a2eb5ea7 DC |
77 | return 1; |
78 | ||
36697dc0 LP |
79 | if ((*a)->repeat < (*b)->repeat) |
80 | return -1; | |
81 | if ((*a)->repeat > (*b)->repeat) | |
82 | return 1; | |
83 | ||
84 | return 0; | |
85 | } | |
86 | ||
a2eb5ea7 | 87 | static void normalize_chain(CalendarComponent **c) { |
36697dc0 LP |
88 | unsigned n = 0, k; |
89 | CalendarComponent **b, *i, **j, *next; | |
90 | ||
91 | assert(c); | |
92 | ||
a2eb5ea7 | 93 | for (i = *c; i; i = i->next) { |
36697dc0 LP |
94 | n++; |
95 | ||
a2eb5ea7 | 96 | /* |
e78fce48 | 97 | * While we're counting the chain, also normalize `stop` |
a2eb5ea7 DC |
98 | * so the length of the range is a multiple of `repeat` |
99 | */ | |
c0aebb4b | 100 | if (i->stop > i->start && i->repeat > 0) |
e78fce48 | 101 | i->stop -= (i->stop - i->start) % i->repeat; |
a2eb5ea7 DC |
102 | |
103 | } | |
104 | ||
36697dc0 LP |
105 | if (n <= 1) |
106 | return; | |
107 | ||
108 | j = b = alloca(sizeof(CalendarComponent*) * n); | |
109 | for (i = *c; i; i = i->next) | |
110 | *(j++) = i; | |
111 | ||
112 | qsort(b, n, sizeof(CalendarComponent*), component_compare); | |
113 | ||
114 | b[n-1]->next = NULL; | |
115 | next = b[n-1]; | |
116 | ||
117 | /* Drop non-unique entries */ | |
118 | for (k = n-1; k > 0; k--) { | |
963e3d83 | 119 | if (component_compare(&b[k-1], &next) == 0) { |
36697dc0 LP |
120 | free(b[k-1]); |
121 | continue; | |
122 | } | |
123 | ||
124 | b[k-1]->next = next; | |
125 | next = b[k-1]; | |
126 | } | |
127 | ||
128 | *c = next; | |
129 | } | |
130 | ||
131 | static void fix_year(CalendarComponent *c) { | |
132 | /* Turns 12 → 2012, 89 → 1989 */ | |
133 | ||
9ed794a3 | 134 | while (c) { |
e78fce48 DC |
135 | if (c->start >= 0 && c->start < 70) |
136 | c->start += 2000; | |
36697dc0 | 137 | |
e78fce48 DC |
138 | if (c->stop >= 0 && c->stop < 70) |
139 | c->stop += 2000; | |
a2eb5ea7 | 140 | |
e78fce48 DC |
141 | if (c->start >= 70 && c->start < 100) |
142 | c->start += 1900; | |
36697dc0 | 143 | |
e78fce48 DC |
144 | if (c->stop >= 70 && c->stop < 100) |
145 | c->stop += 1900; | |
a2eb5ea7 | 146 | |
482f3b54 | 147 | c = c->next; |
36697dc0 LP |
148 | } |
149 | } | |
150 | ||
151 | int calendar_spec_normalize(CalendarSpec *c) { | |
152 | assert(c); | |
153 | ||
489464d0 | 154 | if (c->weekdays_bits <= 0 || c->weekdays_bits >= BITS_WEEKDAYS) |
36697dc0 LP |
155 | c->weekdays_bits = -1; |
156 | ||
8ea80351 DC |
157 | if (c->end_of_month && !c->day) |
158 | c->end_of_month = false; | |
159 | ||
36697dc0 LP |
160 | fix_year(c->year); |
161 | ||
a2eb5ea7 DC |
162 | normalize_chain(&c->year); |
163 | normalize_chain(&c->month); | |
164 | normalize_chain(&c->day); | |
165 | normalize_chain(&c->hour); | |
166 | normalize_chain(&c->minute); | |
167 | normalize_chain(&c->microsecond); | |
36697dc0 LP |
168 | |
169 | return 0; | |
170 | } | |
171 | ||
c58b1b3a | 172 | _pure_ static bool chain_valid(CalendarComponent *c, int from, int to, bool end_of_month) { |
36697dc0 LP |
173 | if (!c) |
174 | return true; | |
175 | ||
a2eb5ea7 DC |
176 | /* Forbid dates more than 28 days from the end of the month */ |
177 | if (end_of_month) | |
178 | to -= 3; | |
179 | ||
e78fce48 | 180 | if (c->start < from || c->start > to) |
36697dc0 LP |
181 | return false; |
182 | ||
8ea80351 DC |
183 | /* |
184 | * c->repeat must be short enough so at least one repetition may | |
185 | * occur before the end of the interval. For dates scheduled | |
e78fce48 | 186 | * relative to the end of the month, c->start and c->stop |
a2eb5ea7 | 187 | * correspond to the Nth last day of the month. |
8ea80351 | 188 | */ |
e78fce48 DC |
189 | if (c->stop >= 0) { |
190 | if (c->stop < from || c ->stop > to) | |
a2eb5ea7 | 191 | return false; |
8ea80351 | 192 | |
e78fce48 | 193 | if (c->start + c->repeat > c->stop) |
a2eb5ea7 DC |
194 | return false; |
195 | } else { | |
e78fce48 | 196 | if (end_of_month && c->start - c->repeat < from) |
a2eb5ea7 DC |
197 | return false; |
198 | ||
e78fce48 | 199 | if (!end_of_month && c->start + c->repeat > to) |
a2eb5ea7 DC |
200 | return false; |
201 | } | |
36697dc0 LP |
202 | |
203 | if (c->next) | |
c58b1b3a | 204 | return chain_valid(c->next, from, to, end_of_month); |
36697dc0 LP |
205 | |
206 | return true; | |
207 | } | |
208 | ||
44a6b1b6 | 209 | _pure_ bool calendar_spec_valid(CalendarSpec *c) { |
36697dc0 LP |
210 | assert(c); |
211 | ||
489464d0 | 212 | if (c->weekdays_bits > BITS_WEEKDAYS) |
36697dc0 LP |
213 | return false; |
214 | ||
8ea80351 | 215 | if (!chain_valid(c->year, MIN_YEAR, MAX_YEAR, false)) |
36697dc0 LP |
216 | return false; |
217 | ||
8ea80351 | 218 | if (!chain_valid(c->month, 1, 12, false)) |
36697dc0 LP |
219 | return false; |
220 | ||
8ea80351 | 221 | if (!chain_valid(c->day, 1, 31, c->end_of_month)) |
36697dc0 LP |
222 | return false; |
223 | ||
8ea80351 | 224 | if (!chain_valid(c->hour, 0, 23, false)) |
36697dc0 LP |
225 | return false; |
226 | ||
8ea80351 | 227 | if (!chain_valid(c->minute, 0, 59, false)) |
36697dc0 LP |
228 | return false; |
229 | ||
8ea80351 | 230 | if (!chain_valid(c->microsecond, 0, 60*USEC_PER_SEC-1, false)) |
36697dc0 LP |
231 | return false; |
232 | ||
233 | return true; | |
234 | } | |
235 | ||
236 | static void format_weekdays(FILE *f, const CalendarSpec *c) { | |
237 | static const char *const days[] = { | |
238 | "Mon", | |
239 | "Tue", | |
240 | "Wed", | |
241 | "Thu", | |
242 | "Fri", | |
243 | "Sat", | |
244 | "Sun" | |
245 | }; | |
246 | ||
247 | int l, x; | |
e638d050 | 248 | bool need_comma = false; |
36697dc0 LP |
249 | |
250 | assert(f); | |
251 | assert(c); | |
489464d0 | 252 | assert(c->weekdays_bits > 0 && c->weekdays_bits <= BITS_WEEKDAYS); |
36697dc0 LP |
253 | |
254 | for (x = 0, l = -1; x < (int) ELEMENTSOF(days); x++) { | |
255 | ||
256 | if (c->weekdays_bits & (1 << x)) { | |
257 | ||
258 | if (l < 0) { | |
e638d050 | 259 | if (need_comma) |
4b61c875 | 260 | fputc_unlocked(',', f); |
36697dc0 | 261 | else |
e638d050 | 262 | need_comma = true; |
36697dc0 | 263 | |
4b61c875 | 264 | fputs_unlocked(days[x], f); |
36697dc0 LP |
265 | l = x; |
266 | } | |
267 | ||
268 | } else if (l >= 0) { | |
269 | ||
270 | if (x > l + 1) { | |
4b61c875 LP |
271 | fputs_unlocked(x > l + 2 ? ".." : ",", f); |
272 | fputs_unlocked(days[x-1], f); | |
36697dc0 LP |
273 | } |
274 | ||
275 | l = -1; | |
276 | } | |
277 | } | |
278 | ||
279 | if (l >= 0 && x > l + 1) { | |
4b61c875 LP |
280 | fputs_unlocked(x > l + 2 ? ".." : ",", f); |
281 | fputs_unlocked(days[x-1], f); | |
36697dc0 LP |
282 | } |
283 | } | |
284 | ||
436dd70f | 285 | static void format_chain(FILE *f, int space, const CalendarComponent *c, bool usec) { |
7c250321 | 286 | int d = usec ? (int) USEC_PER_SEC : 1; |
9904dc00 | 287 | |
36697dc0 LP |
288 | assert(f); |
289 | ||
290 | if (!c) { | |
4b61c875 | 291 | fputc_unlocked('*', f); |
36697dc0 LP |
292 | return; |
293 | } | |
294 | ||
482f3b54 | 295 | if (usec && c->start == 0 && c->repeat == USEC_PER_SEC && !c->next) { |
4b61c875 | 296 | fputc_unlocked('*', f); |
482f3b54 DC |
297 | return; |
298 | } | |
299 | ||
e78fce48 | 300 | assert(c->start >= 0); |
7c250321 | 301 | |
e78fce48 DC |
302 | fprintf(f, "%0*i", space, c->start / d); |
303 | if (c->start % d > 0) | |
304 | fprintf(f, ".%06i", c->start % d); | |
7c250321 | 305 | |
e78fce48 DC |
306 | if (c->stop > 0) |
307 | fprintf(f, "..%0*i", space, c->stop / d); | |
308 | if (c->stop % d > 0) | |
309 | fprintf(f, ".%06i", c->stop % d); | |
a2eb5ea7 | 310 | |
e78fce48 | 311 | if (c->repeat > 0 && !(c->stop > 0 && c->repeat == d)) |
7c250321 | 312 | fprintf(f, "/%i", c->repeat / d); |
a2eb5ea7 | 313 | if (c->repeat % d > 0) |
7c250321 | 314 | fprintf(f, ".%06i", c->repeat % d); |
36697dc0 | 315 | |
a2eb5ea7 | 316 | if (c->next) { |
4b61c875 | 317 | fputc_unlocked(',', f); |
436dd70f | 318 | format_chain(f, space, c->next, usec); |
36697dc0 LP |
319 | } |
320 | } | |
321 | ||
322 | int calendar_spec_to_string(const CalendarSpec *c, char **p) { | |
323 | char *buf = NULL; | |
324 | size_t sz = 0; | |
325 | FILE *f; | |
dacd6cee | 326 | int r; |
36697dc0 LP |
327 | |
328 | assert(c); | |
329 | assert(p); | |
330 | ||
331 | f = open_memstream(&buf, &sz); | |
332 | if (!f) | |
333 | return -ENOMEM; | |
334 | ||
489464d0 | 335 | if (c->weekdays_bits > 0 && c->weekdays_bits <= BITS_WEEKDAYS) { |
36697dc0 | 336 | format_weekdays(f, c); |
4b61c875 | 337 | fputc_unlocked(' ', f); |
36697dc0 LP |
338 | } |
339 | ||
436dd70f | 340 | format_chain(f, 4, c->year, false); |
4b61c875 | 341 | fputc_unlocked('-', f); |
436dd70f | 342 | format_chain(f, 2, c->month, false); |
4b61c875 | 343 | fputc_unlocked(c->end_of_month ? '~' : '-', f); |
436dd70f | 344 | format_chain(f, 2, c->day, false); |
4b61c875 | 345 | fputc_unlocked(' ', f); |
436dd70f | 346 | format_chain(f, 2, c->hour, false); |
4b61c875 | 347 | fputc_unlocked(':', f); |
436dd70f | 348 | format_chain(f, 2, c->minute, false); |
4b61c875 | 349 | fputc_unlocked(':', f); |
482f3b54 | 350 | format_chain(f, 2, c->microsecond, true); |
36697dc0 | 351 | |
51ffa239 | 352 | if (c->utc) |
4b61c875 | 353 | fputs_unlocked(" UTC", f); |
21b3a0fc LP |
354 | else if (IN_SET(c->dst, 0, 1)) { |
355 | ||
356 | /* If daylight saving is explicitly on or off, let's show the used timezone. */ | |
357 | ||
358 | tzset(); | |
359 | ||
360 | if (!isempty(tzname[c->dst])) { | |
4b61c875 LP |
361 | fputc_unlocked(' ', f); |
362 | fputs_unlocked(tzname[c->dst], f); | |
21b3a0fc LP |
363 | } |
364 | } | |
51ffa239 | 365 | |
dacd6cee LP |
366 | r = fflush_and_check(f); |
367 | if (r < 0) { | |
36697dc0 LP |
368 | free(buf); |
369 | fclose(f); | |
dacd6cee | 370 | return r; |
36697dc0 LP |
371 | } |
372 | ||
373 | fclose(f); | |
374 | ||
375 | *p = buf; | |
376 | return 0; | |
377 | } | |
378 | ||
379 | static int parse_weekdays(const char **p, CalendarSpec *c) { | |
380 | static const struct { | |
381 | const char *name; | |
382 | const int nr; | |
383 | } day_nr[] = { | |
384 | { "Monday", 0 }, | |
385 | { "Mon", 0 }, | |
386 | { "Tuesday", 1 }, | |
387 | { "Tue", 1 }, | |
388 | { "Wednesday", 2 }, | |
389 | { "Wed", 2 }, | |
390 | { "Thursday", 3 }, | |
391 | { "Thu", 3 }, | |
392 | { "Friday", 4 }, | |
393 | { "Fri", 4 }, | |
394 | { "Saturday", 5 }, | |
395 | { "Sat", 5 }, | |
396 | { "Sunday", 6 }, | |
397 | { "Sun", 6 } | |
398 | }; | |
399 | ||
400 | int l = -1; | |
401 | bool first = true; | |
402 | ||
403 | assert(p); | |
404 | assert(*p); | |
405 | assert(c); | |
406 | ||
407 | for (;;) { | |
408 | unsigned i; | |
409 | ||
36697dc0 LP |
410 | for (i = 0; i < ELEMENTSOF(day_nr); i++) { |
411 | size_t skip; | |
412 | ||
413 | if (!startswith_no_case(*p, day_nr[i].name)) | |
414 | continue; | |
415 | ||
416 | skip = strlen(day_nr[i].name); | |
417 | ||
418 | if ((*p)[skip] != '-' && | |
e638d050 | 419 | (*p)[skip] != '.' && |
36697dc0 LP |
420 | (*p)[skip] != ',' && |
421 | (*p)[skip] != ' ' && | |
422 | (*p)[skip] != 0) | |
423 | return -EINVAL; | |
424 | ||
425 | c->weekdays_bits |= 1 << day_nr[i].nr; | |
426 | ||
427 | if (l >= 0) { | |
428 | int j; | |
429 | ||
430 | if (l > day_nr[i].nr) | |
431 | return -EINVAL; | |
432 | ||
433 | for (j = l + 1; j < day_nr[i].nr; j++) | |
434 | c->weekdays_bits |= 1 << j; | |
435 | } | |
436 | ||
437 | *p += skip; | |
438 | break; | |
439 | } | |
440 | ||
441 | /* Couldn't find this prefix, so let's assume the | |
442 | weekday was not specified and let's continue with | |
443 | the date */ | |
444 | if (i >= ELEMENTSOF(day_nr)) | |
445 | return first ? 0 : -EINVAL; | |
446 | ||
447 | /* We reached the end of the string */ | |
448 | if (**p == 0) | |
449 | return 0; | |
450 | ||
451 | /* We reached the end of the weekday spec part */ | |
452 | if (**p == ' ') { | |
453 | *p += strspn(*p, " "); | |
454 | return 0; | |
455 | } | |
456 | ||
e638d050 DC |
457 | if (**p == '.') { |
458 | if (l >= 0) | |
459 | return -EINVAL; | |
460 | ||
461 | if ((*p)[1] != '.') | |
462 | return -EINVAL; | |
463 | ||
464 | l = day_nr[i].nr; | |
6bae2fd4 | 465 | *p += 2; |
e638d050 DC |
466 | |
467 | /* Support ranges with "-" for backwards compatibility */ | |
468 | } else if (**p == '-') { | |
36697dc0 LP |
469 | if (l >= 0) |
470 | return -EINVAL; | |
471 | ||
472 | l = day_nr[i].nr; | |
6bae2fd4 DC |
473 | *p += 1; |
474 | ||
475 | } else if (**p == ',') { | |
36697dc0 | 476 | l = -1; |
6bae2fd4 DC |
477 | *p += 1; |
478 | } | |
479 | ||
482f3b54 | 480 | /* Allow a trailing comma but not an open range */ |
6bae2fd4 DC |
481 | if (**p == 0 || **p == ' ') { |
482 | *p += strspn(*p, " "); | |
483 | return l < 0 ? 0 : -EINVAL; | |
484 | } | |
36697dc0 | 485 | |
36697dc0 LP |
486 | first = false; |
487 | } | |
488 | } | |
489 | ||
d80e5b74 ZJS |
490 | static int parse_one_number(const char *p, const char **e, unsigned long *ret) { |
491 | char *ee = NULL; | |
492 | unsigned long value; | |
493 | ||
494 | errno = 0; | |
495 | value = strtoul(p, &ee, 10); | |
496 | if (errno > 0) | |
497 | return -errno; | |
498 | if (ee == p) | |
499 | return -EINVAL; | |
500 | ||
501 | *ret = value; | |
502 | *e = ee; | |
503 | return 0; | |
504 | } | |
505 | ||
c0aebb4b | 506 | static int parse_component_decimal(const char **p, bool usec, int *res) { |
436dd70f HV |
507 | unsigned long value; |
508 | const char *e = NULL; | |
436dd70f | 509 | int r; |
36697dc0 | 510 | |
9dfa81a0 DC |
511 | if (!isdigit(**p)) |
512 | return -EINVAL; | |
513 | ||
d80e5b74 ZJS |
514 | r = parse_one_number(*p, &e, &value); |
515 | if (r < 0) | |
516 | return r; | |
36697dc0 | 517 | |
436dd70f HV |
518 | if (usec) { |
519 | if (value * USEC_PER_SEC / USEC_PER_SEC != value) | |
36697dc0 LP |
520 | return -ERANGE; |
521 | ||
436dd70f | 522 | value *= USEC_PER_SEC; |
436dd70f | 523 | |
60bf5836 DC |
524 | /* One "." is a decimal point, but ".." is a range separator */ |
525 | if (e[0] == '.' && e[1] != '.') { | |
526 | unsigned add; | |
36ff0c97 | 527 | |
436dd70f HV |
528 | e++; |
529 | r = parse_fractional_part_u(&e, 6, &add); | |
530 | if (r < 0) | |
531 | return r; | |
532 | ||
533 | if (add + value < value) | |
534 | return -ERANGE; | |
535 | value += add; | |
536 | } | |
537 | } | |
538 | ||
c0aebb4b DC |
539 | if (value > INT_MAX) |
540 | return -ERANGE; | |
541 | ||
436dd70f HV |
542 | *p = e; |
543 | *res = value; | |
544 | ||
545 | return 0; | |
546 | } | |
547 | ||
32b52369 DC |
548 | static int const_chain(int value, CalendarComponent **c) { |
549 | CalendarComponent *cc = NULL; | |
550 | ||
551 | assert(c); | |
552 | ||
553 | cc = new0(CalendarComponent, 1); | |
554 | if (!cc) | |
555 | return -ENOMEM; | |
556 | ||
e78fce48 DC |
557 | cc->start = value; |
558 | cc->stop = -1; | |
32b52369 DC |
559 | cc->repeat = 0; |
560 | cc->next = *c; | |
561 | ||
562 | *c = cc; | |
563 | ||
564 | return 0; | |
565 | } | |
566 | ||
d80e5b74 ZJS |
567 | static int calendarspec_from_time_t(CalendarSpec *c, time_t time) { |
568 | struct tm tm; | |
569 | CalendarComponent *year = NULL, *month = NULL, *day = NULL, *hour = NULL, *minute = NULL, *us = NULL; | |
570 | int r; | |
571 | ||
572 | assert_se(gmtime_r(&time, &tm)); | |
573 | ||
574 | r = const_chain(tm.tm_year + 1900, &year); | |
575 | if (r < 0) | |
576 | return r; | |
577 | ||
578 | r = const_chain(tm.tm_mon + 1, &month); | |
579 | if (r < 0) | |
580 | return r; | |
581 | ||
582 | r = const_chain(tm.tm_mday, &day); | |
583 | if (r < 0) | |
584 | return r; | |
585 | ||
586 | r = const_chain(tm.tm_hour, &hour); | |
587 | if (r < 0) | |
588 | return r; | |
589 | ||
590 | r = const_chain(tm.tm_min, &minute); | |
591 | if (r < 0) | |
592 | return r; | |
593 | ||
594 | r = const_chain(tm.tm_sec * USEC_PER_SEC, &us); | |
595 | if (r < 0) | |
596 | return r; | |
597 | ||
598 | c->utc = true; | |
599 | c->year = year; | |
600 | c->month = month; | |
601 | c->day = day; | |
602 | c->hour = hour; | |
603 | c->minute = minute; | |
604 | c->microsecond = us; | |
605 | return 0; | |
606 | } | |
607 | ||
436dd70f | 608 | static int prepend_component(const char **p, bool usec, CalendarComponent **c) { |
c0aebb4b | 609 | int r, start, stop = -1, repeat = 0; |
436dd70f | 610 | CalendarComponent *cc; |
436dd70f HV |
611 | const char *e; |
612 | ||
613 | assert(p); | |
614 | assert(c); | |
615 | ||
616 | e = *p; | |
617 | ||
e78fce48 | 618 | r = parse_component_decimal(&e, usec, &start); |
436dd70f HV |
619 | if (r < 0) |
620 | return r; | |
621 | ||
a2eb5ea7 DC |
622 | if (e[0] == '.' && e[1] == '.') { |
623 | e += 2; | |
e78fce48 | 624 | r = parse_component_decimal(&e, usec, &stop); |
a2eb5ea7 DC |
625 | if (r < 0) |
626 | return r; | |
627 | ||
628 | repeat = usec ? USEC_PER_SEC : 1; | |
629 | } | |
630 | ||
436dd70f HV |
631 | if (*e == '/') { |
632 | e++; | |
633 | r = parse_component_decimal(&e, usec, &repeat); | |
634 | if (r < 0) | |
635 | return r; | |
636 | ||
637 | if (repeat == 0) | |
638 | return -ERANGE; | |
36697dc0 LP |
639 | } |
640 | ||
8ea80351 | 641 | if (*e != 0 && *e != ' ' && *e != ',' && *e != '-' && *e != '~' && *e != ':') |
36697dc0 LP |
642 | return -EINVAL; |
643 | ||
644 | cc = new0(CalendarComponent, 1); | |
645 | if (!cc) | |
646 | return -ENOMEM; | |
647 | ||
e78fce48 DC |
648 | cc->start = start; |
649 | cc->stop = stop; | |
36697dc0 LP |
650 | cc->repeat = repeat; |
651 | cc->next = *c; | |
652 | ||
653 | *p = e; | |
654 | *c = cc; | |
655 | ||
656 | if (*e ==',') { | |
657 | *p += 1; | |
436dd70f | 658 | return prepend_component(p, usec, c); |
36697dc0 LP |
659 | } |
660 | ||
661 | return 0; | |
662 | } | |
663 | ||
436dd70f | 664 | static int parse_chain(const char **p, bool usec, CalendarComponent **c) { |
36697dc0 LP |
665 | const char *t; |
666 | CalendarComponent *cc = NULL; | |
667 | int r; | |
668 | ||
669 | assert(p); | |
670 | assert(c); | |
671 | ||
672 | t = *p; | |
673 | ||
674 | if (t[0] == '*') { | |
436dd70f HV |
675 | if (usec) { |
676 | r = const_chain(0, c); | |
677 | if (r < 0) | |
678 | return r; | |
679 | (*c)->repeat = USEC_PER_SEC; | |
680 | } else | |
681 | *c = NULL; | |
682 | ||
36697dc0 | 683 | *p = t + 1; |
36697dc0 LP |
684 | return 0; |
685 | } | |
686 | ||
436dd70f | 687 | r = prepend_component(&t, usec, &cc); |
36697dc0 LP |
688 | if (r < 0) { |
689 | free_chain(cc); | |
690 | return r; | |
691 | } | |
692 | ||
693 | *p = t; | |
694 | *c = cc; | |
695 | return 0; | |
696 | } | |
697 | ||
36697dc0 LP |
698 | static int parse_date(const char **p, CalendarSpec *c) { |
699 | const char *t; | |
700 | int r; | |
701 | CalendarComponent *first, *second, *third; | |
702 | ||
703 | assert(p); | |
704 | assert(*p); | |
705 | assert(c); | |
706 | ||
707 | t = *p; | |
708 | ||
709 | if (*t == 0) | |
710 | return 0; | |
711 | ||
d80e5b74 ZJS |
712 | /* @TIMESTAMP — UNIX time in seconds since the epoch */ |
713 | if (*t == '@') { | |
714 | unsigned long value; | |
715 | time_t time; | |
716 | ||
717 | r = parse_one_number(t + 1, &t, &value); | |
718 | if (r < 0) | |
719 | return r; | |
720 | ||
721 | time = value; | |
722 | if ((unsigned long) time != value) | |
723 | return -ERANGE; | |
724 | ||
725 | r = calendarspec_from_time_t(c, time); | |
726 | if (r < 0) | |
727 | return r; | |
728 | ||
729 | *p = t; | |
730 | return 1; /* finito, don't parse H:M:S after that */ | |
731 | } | |
732 | ||
436dd70f | 733 | r = parse_chain(&t, false, &first); |
36697dc0 LP |
734 | if (r < 0) |
735 | return r; | |
736 | ||
737 | /* Already the end? A ':' as separator? In that case this was a time, not a date */ | |
738 | if (*t == 0 || *t == ':') { | |
739 | free_chain(first); | |
740 | return 0; | |
741 | } | |
742 | ||
8ea80351 DC |
743 | if (*t == '~') |
744 | c->end_of_month = true; | |
745 | else if (*t != '-') { | |
36697dc0 LP |
746 | free_chain(first); |
747 | return -EINVAL; | |
748 | } | |
749 | ||
750 | t++; | |
436dd70f | 751 | r = parse_chain(&t, false, &second); |
36697dc0 LP |
752 | if (r < 0) { |
753 | free_chain(first); | |
754 | return r; | |
755 | } | |
756 | ||
757 | /* Got two parts, hence it's month and day */ | |
758 | if (*t == ' ' || *t == 0) { | |
759 | *p = t + strspn(t, " "); | |
760 | c->month = first; | |
761 | c->day = second; | |
762 | return 0; | |
fc2371c7 DC |
763 | } else if (c->end_of_month) { |
764 | free_chain(first); | |
765 | free_chain(second); | |
8ea80351 | 766 | return -EINVAL; |
fc2371c7 | 767 | } |
36697dc0 | 768 | |
8ea80351 DC |
769 | if (*t == '~') |
770 | c->end_of_month = true; | |
771 | else if (*t != '-') { | |
36697dc0 LP |
772 | free_chain(first); |
773 | free_chain(second); | |
774 | return -EINVAL; | |
775 | } | |
776 | ||
777 | t++; | |
436dd70f | 778 | r = parse_chain(&t, false, &third); |
36697dc0 LP |
779 | if (r < 0) { |
780 | free_chain(first); | |
781 | free_chain(second); | |
782 | return r; | |
783 | } | |
784 | ||
8ea80351 | 785 | /* Got three parts, hence it is year, month and day */ |
36697dc0 LP |
786 | if (*t == ' ' || *t == 0) { |
787 | *p = t + strspn(t, " "); | |
788 | c->year = first; | |
789 | c->month = second; | |
790 | c->day = third; | |
791 | return 0; | |
792 | } | |
793 | ||
794 | free_chain(first); | |
795 | free_chain(second); | |
796 | free_chain(third); | |
797 | return -EINVAL; | |
798 | } | |
799 | ||
519cffec | 800 | static int parse_calendar_time(const char **p, CalendarSpec *c) { |
36697dc0 LP |
801 | CalendarComponent *h = NULL, *m = NULL, *s = NULL; |
802 | const char *t; | |
803 | int r; | |
804 | ||
805 | assert(p); | |
806 | assert(*p); | |
807 | assert(c); | |
808 | ||
809 | t = *p; | |
810 | ||
408a51e1 DC |
811 | /* If no time is specified at all, then this means 00:00:00 */ |
812 | if (*t == 0) | |
813 | goto null_hour; | |
36697dc0 | 814 | |
436dd70f | 815 | r = parse_chain(&t, false, &h); |
36697dc0 LP |
816 | if (r < 0) |
817 | goto fail; | |
818 | ||
819 | if (*t != ':') { | |
820 | r = -EINVAL; | |
821 | goto fail; | |
822 | } | |
823 | ||
824 | t++; | |
436dd70f | 825 | r = parse_chain(&t, false, &m); |
36697dc0 LP |
826 | if (r < 0) |
827 | goto fail; | |
828 | ||
829 | /* Already at the end? Then it's hours and minutes, and seconds are 0 */ | |
c0df71fa DC |
830 | if (*t == 0) |
831 | goto null_second; | |
36697dc0 LP |
832 | |
833 | if (*t != ':') { | |
834 | r = -EINVAL; | |
835 | goto fail; | |
836 | } | |
837 | ||
838 | t++; | |
436dd70f | 839 | r = parse_chain(&t, true, &s); |
36697dc0 LP |
840 | if (r < 0) |
841 | goto fail; | |
842 | ||
843 | /* At the end? Then it's hours, minutes and seconds */ | |
844 | if (*t == 0) | |
845 | goto finish; | |
846 | ||
847 | r = -EINVAL; | |
848 | goto fail; | |
849 | ||
850 | null_hour: | |
851 | r = const_chain(0, &h); | |
852 | if (r < 0) | |
853 | goto fail; | |
854 | ||
855 | r = const_chain(0, &m); | |
856 | if (r < 0) | |
857 | goto fail; | |
858 | ||
859 | null_second: | |
860 | r = const_chain(0, &s); | |
861 | if (r < 0) | |
862 | goto fail; | |
863 | ||
864 | finish: | |
865 | *p = t; | |
866 | c->hour = h; | |
867 | c->minute = m; | |
436dd70f HV |
868 | c->microsecond = s; |
869 | ||
36697dc0 LP |
870 | return 0; |
871 | ||
872 | fail: | |
873 | free_chain(h); | |
874 | free_chain(m); | |
875 | free_chain(s); | |
876 | return r; | |
877 | } | |
878 | ||
879 | int calendar_spec_from_string(const char *p, CalendarSpec **spec) { | |
21b3a0fc | 880 | const char *utc; |
36697dc0 LP |
881 | CalendarSpec *c; |
882 | int r; | |
883 | ||
884 | assert(p); | |
885 | assert(spec); | |
886 | ||
36697dc0 LP |
887 | c = new0(CalendarSpec, 1); |
888 | if (!c) | |
889 | return -ENOMEM; | |
21b3a0fc | 890 | c->dst = -1; |
36697dc0 | 891 | |
078efddd HV |
892 | utc = endswith_no_case(p, " UTC"); |
893 | if (utc) { | |
894 | c->utc = true; | |
895 | p = strndupa(p, utc - p); | |
21b3a0fc LP |
896 | } else { |
897 | const char *e = NULL; | |
898 | int j; | |
899 | ||
900 | tzset(); | |
901 | ||
902 | /* Check if the local timezone was specified? */ | |
903 | for (j = 0; j <= 1; j++) { | |
904 | if (isempty(tzname[j])) | |
905 | continue; | |
906 | ||
907 | e = endswith_no_case(p, tzname[j]); | |
d80e5b74 | 908 | if (!e) |
21b3a0fc LP |
909 | continue; |
910 | if (e == p) | |
911 | continue; | |
912 | if (e[-1] != ' ') | |
913 | continue; | |
914 | ||
915 | break; | |
916 | } | |
917 | ||
918 | /* Found one of the two timezones specified? */ | |
919 | if (IN_SET(j, 0, 1)) { | |
920 | p = strndupa(p, e - p - 1); | |
921 | c->dst = j; | |
922 | } | |
078efddd | 923 | } |
51ffa239 | 924 | |
04773cb5 DC |
925 | if (isempty(p)) { |
926 | r = -EINVAL; | |
927 | goto fail; | |
928 | } | |
929 | ||
272ac205 | 930 | if (strcaseeq(p, "minutely")) { |
436dd70f | 931 | r = const_chain(0, &c->microsecond); |
272ac205 DM |
932 | if (r < 0) |
933 | goto fail; | |
934 | ||
935 | } else if (strcaseeq(p, "hourly")) { | |
36697dc0 LP |
936 | r = const_chain(0, &c->minute); |
937 | if (r < 0) | |
938 | goto fail; | |
436dd70f | 939 | r = const_chain(0, &c->microsecond); |
36697dc0 LP |
940 | if (r < 0) |
941 | goto fail; | |
942 | ||
b43d1d01 | 943 | } else if (strcaseeq(p, "daily")) { |
36697dc0 LP |
944 | r = const_chain(0, &c->hour); |
945 | if (r < 0) | |
946 | goto fail; | |
947 | r = const_chain(0, &c->minute); | |
948 | if (r < 0) | |
949 | goto fail; | |
436dd70f | 950 | r = const_chain(0, &c->microsecond); |
36697dc0 LP |
951 | if (r < 0) |
952 | goto fail; | |
953 | ||
b43d1d01 | 954 | } else if (strcaseeq(p, "monthly")) { |
36697dc0 LP |
955 | r = const_chain(1, &c->day); |
956 | if (r < 0) | |
957 | goto fail; | |
958 | r = const_chain(0, &c->hour); | |
959 | if (r < 0) | |
960 | goto fail; | |
961 | r = const_chain(0, &c->minute); | |
962 | if (r < 0) | |
963 | goto fail; | |
436dd70f | 964 | r = const_chain(0, &c->microsecond); |
36697dc0 LP |
965 | if (r < 0) |
966 | goto fail; | |
967 | ||
dbfd41e2 LP |
968 | } else if (strcaseeq(p, "annually") || |
969 | strcaseeq(p, "yearly") || | |
970 | strcaseeq(p, "anually") /* backwards compatibility */ ) { | |
971 | ||
13516818 LP |
972 | r = const_chain(1, &c->month); |
973 | if (r < 0) | |
974 | goto fail; | |
975 | r = const_chain(1, &c->day); | |
976 | if (r < 0) | |
977 | goto fail; | |
978 | r = const_chain(0, &c->hour); | |
979 | if (r < 0) | |
980 | goto fail; | |
981 | r = const_chain(0, &c->minute); | |
982 | if (r < 0) | |
983 | goto fail; | |
436dd70f | 984 | r = const_chain(0, &c->microsecond); |
13516818 LP |
985 | if (r < 0) |
986 | goto fail; | |
987 | ||
b43d1d01 | 988 | } else if (strcaseeq(p, "weekly")) { |
36697dc0 LP |
989 | |
990 | c->weekdays_bits = 1; | |
991 | ||
992 | r = const_chain(0, &c->hour); | |
993 | if (r < 0) | |
994 | goto fail; | |
995 | r = const_chain(0, &c->minute); | |
996 | if (r < 0) | |
997 | goto fail; | |
436dd70f | 998 | r = const_chain(0, &c->microsecond); |
dbfd41e2 LP |
999 | if (r < 0) |
1000 | goto fail; | |
1001 | ||
1002 | } else if (strcaseeq(p, "quarterly")) { | |
1003 | ||
1004 | r = const_chain(1, &c->month); | |
1005 | if (r < 0) | |
1006 | goto fail; | |
1007 | r = const_chain(4, &c->month); | |
1008 | if (r < 0) | |
1009 | goto fail; | |
1010 | r = const_chain(7, &c->month); | |
1011 | if (r < 0) | |
1012 | goto fail; | |
1013 | r = const_chain(10, &c->month); | |
1014 | if (r < 0) | |
1015 | goto fail; | |
1016 | r = const_chain(1, &c->day); | |
1017 | if (r < 0) | |
1018 | goto fail; | |
1019 | r = const_chain(0, &c->hour); | |
1020 | if (r < 0) | |
1021 | goto fail; | |
1022 | r = const_chain(0, &c->minute); | |
1023 | if (r < 0) | |
1024 | goto fail; | |
436dd70f | 1025 | r = const_chain(0, &c->microsecond); |
dbfd41e2 LP |
1026 | if (r < 0) |
1027 | goto fail; | |
1028 | ||
1029 | } else if (strcaseeq(p, "biannually") || | |
1030 | strcaseeq(p, "bi-annually") || | |
1031 | strcaseeq(p, "semiannually") || | |
1032 | strcaseeq(p, "semi-annually")) { | |
1033 | ||
1034 | r = const_chain(1, &c->month); | |
1035 | if (r < 0) | |
1036 | goto fail; | |
1037 | r = const_chain(7, &c->month); | |
1038 | if (r < 0) | |
1039 | goto fail; | |
1040 | r = const_chain(1, &c->day); | |
1041 | if (r < 0) | |
1042 | goto fail; | |
1043 | r = const_chain(0, &c->hour); | |
1044 | if (r < 0) | |
1045 | goto fail; | |
1046 | r = const_chain(0, &c->minute); | |
1047 | if (r < 0) | |
1048 | goto fail; | |
436dd70f | 1049 | r = const_chain(0, &c->microsecond); |
36697dc0 LP |
1050 | if (r < 0) |
1051 | goto fail; | |
1052 | ||
1053 | } else { | |
1054 | r = parse_weekdays(&p, c); | |
1055 | if (r < 0) | |
1056 | goto fail; | |
1057 | ||
1058 | r = parse_date(&p, c); | |
1059 | if (r < 0) | |
1060 | goto fail; | |
1061 | ||
d80e5b74 ZJS |
1062 | if (r == 0) { |
1063 | r = parse_calendar_time(&p, c); | |
1064 | if (r < 0) | |
1065 | goto fail; | |
1066 | } | |
36697dc0 LP |
1067 | |
1068 | if (*p != 0) { | |
1069 | r = -EINVAL; | |
1070 | goto fail; | |
1071 | } | |
1072 | } | |
1073 | ||
1074 | r = calendar_spec_normalize(c); | |
1075 | if (r < 0) | |
1076 | goto fail; | |
1077 | ||
1078 | if (!calendar_spec_valid(c)) { | |
1079 | r = -EINVAL; | |
1080 | goto fail; | |
1081 | } | |
1082 | ||
1083 | *spec = c; | |
1084 | return 0; | |
1085 | ||
1086 | fail: | |
1087 | calendar_spec_free(c); | |
1088 | return r; | |
1089 | } | |
1090 | ||
60bf5836 | 1091 | static int find_end_of_month(struct tm *tm, bool utc, int day) { |
a2eb5ea7 DC |
1092 | struct tm t = *tm; |
1093 | ||
1094 | t.tm_mon++; | |
1095 | t.tm_mday = 1 - day; | |
1096 | ||
c477ff14 | 1097 | if (mktime_or_timegm(&t, utc) < 0 || |
a2eb5ea7 DC |
1098 | t.tm_mon != tm->tm_mon) |
1099 | return -1; | |
1100 | ||
1101 | return t.tm_mday; | |
1102 | } | |
1103 | ||
8ea80351 DC |
1104 | static int find_matching_component(const CalendarSpec *spec, const CalendarComponent *c, |
1105 | struct tm *tm, int *val) { | |
482f3b54 | 1106 | const CalendarComponent *p = c; |
e78fce48 | 1107 | int start, stop, d = -1; |
36697dc0 LP |
1108 | bool d_set = false; |
1109 | int r; | |
1110 | ||
1111 | assert(val); | |
1112 | ||
1113 | if (!c) | |
1114 | return 0; | |
1115 | ||
1116 | while (c) { | |
e78fce48 DC |
1117 | start = c->start; |
1118 | stop = c->stop; | |
a2eb5ea7 | 1119 | |
8ea80351 | 1120 | if (spec->end_of_month && p == spec->day) { |
e78fce48 DC |
1121 | start = find_end_of_month(tm, spec->utc, start); |
1122 | stop = find_end_of_month(tm, spec->utc, stop); | |
a2eb5ea7 | 1123 | |
e78fce48 DC |
1124 | if (stop > 0) |
1125 | SWAP_TWO(start, stop); | |
a2eb5ea7 | 1126 | } |
8ea80351 | 1127 | |
e78fce48 | 1128 | if (start >= *val) { |
36697dc0 | 1129 | |
e78fce48 DC |
1130 | if (!d_set || start < d) { |
1131 | d = start; | |
36697dc0 LP |
1132 | d_set = true; |
1133 | } | |
1134 | ||
1135 | } else if (c->repeat > 0) { | |
1136 | int k; | |
1137 | ||
e78fce48 | 1138 | k = start + c->repeat * ((*val - start + c->repeat - 1) / c->repeat); |
36697dc0 | 1139 | |
e78fce48 | 1140 | if ((!d_set || k < d) && (stop < 0 || k <= stop)) { |
36697dc0 LP |
1141 | d = k; |
1142 | d_set = true; | |
1143 | } | |
1144 | } | |
1145 | ||
482f3b54 | 1146 | c = c->next; |
36697dc0 LP |
1147 | } |
1148 | ||
1149 | if (!d_set) | |
1150 | return -ENOENT; | |
1151 | ||
1152 | r = *val != d; | |
1153 | *val = d; | |
1154 | return r; | |
1155 | } | |
1156 | ||
51ffa239 | 1157 | static bool tm_out_of_bounds(const struct tm *tm, bool utc) { |
36697dc0 LP |
1158 | struct tm t; |
1159 | assert(tm); | |
1160 | ||
1161 | t = *tm; | |
1162 | ||
c477ff14 | 1163 | if (mktime_or_timegm(&t, utc) < 0) |
36697dc0 LP |
1164 | return true; |
1165 | ||
f6e7d66b DC |
1166 | /* |
1167 | * Set an upper bound on the year so impossible dates like "*-02-31" | |
1168 | * don't cause find_next() to loop forever. tm_year contains years | |
1169 | * since 1900, so adjust it accordingly. | |
1170 | */ | |
1171 | if (tm->tm_year + 1900 > MAX_YEAR) | |
1172 | return true; | |
1173 | ||
36697dc0 LP |
1174 | /* Did any normalization take place? If so, it was out of bounds before */ |
1175 | return | |
1176 | t.tm_year != tm->tm_year || | |
1177 | t.tm_mon != tm->tm_mon || | |
1178 | t.tm_mday != tm->tm_mday || | |
1179 | t.tm_hour != tm->tm_hour || | |
1180 | t.tm_min != tm->tm_min || | |
1181 | t.tm_sec != tm->tm_sec; | |
1182 | } | |
1183 | ||
51ffa239 | 1184 | static bool matches_weekday(int weekdays_bits, const struct tm *tm, bool utc) { |
36697dc0 LP |
1185 | struct tm t; |
1186 | int k; | |
1187 | ||
489464d0 | 1188 | if (weekdays_bits < 0 || weekdays_bits >= BITS_WEEKDAYS) |
36697dc0 LP |
1189 | return true; |
1190 | ||
1191 | t = *tm; | |
c477ff14 | 1192 | if (mktime_or_timegm(&t, utc) < 0) |
36697dc0 LP |
1193 | return false; |
1194 | ||
1195 | k = t.tm_wday == 0 ? 6 : t.tm_wday - 1; | |
1196 | return (weekdays_bits & (1 << k)); | |
1197 | } | |
1198 | ||
436dd70f | 1199 | static int find_next(const CalendarSpec *spec, struct tm *tm, usec_t *usec) { |
36697dc0 | 1200 | struct tm c; |
436dd70f | 1201 | int tm_usec; |
36697dc0 LP |
1202 | int r; |
1203 | ||
1204 | assert(spec); | |
1205 | assert(tm); | |
1206 | ||
1207 | c = *tm; | |
436dd70f | 1208 | tm_usec = *usec; |
36697dc0 LP |
1209 | |
1210 | for (;;) { | |
1211 | /* Normalize the current date */ | |
ea3894c1 | 1212 | (void) mktime_or_timegm(&c, spec->utc); |
21b3a0fc | 1213 | c.tm_isdst = spec->dst; |
36697dc0 LP |
1214 | |
1215 | c.tm_year += 1900; | |
8ea80351 | 1216 | r = find_matching_component(spec, spec->year, &c, &c.tm_year); |
36697dc0 LP |
1217 | c.tm_year -= 1900; |
1218 | ||
1219 | if (r > 0) { | |
1220 | c.tm_mon = 0; | |
1221 | c.tm_mday = 1; | |
436dd70f | 1222 | c.tm_hour = c.tm_min = c.tm_sec = tm_usec = 0; |
36697dc0 | 1223 | } |
e308ddca | 1224 | if (r < 0) |
36697dc0 | 1225 | return r; |
e308ddca LP |
1226 | if (tm_out_of_bounds(&c, spec->utc)) |
1227 | return -ENOENT; | |
36697dc0 LP |
1228 | |
1229 | c.tm_mon += 1; | |
8ea80351 | 1230 | r = find_matching_component(spec, spec->month, &c, &c.tm_mon); |
36697dc0 LP |
1231 | c.tm_mon -= 1; |
1232 | ||
1233 | if (r > 0) { | |
1234 | c.tm_mday = 1; | |
436dd70f | 1235 | c.tm_hour = c.tm_min = c.tm_sec = tm_usec = 0; |
36697dc0 | 1236 | } |
51ffa239 | 1237 | if (r < 0 || tm_out_of_bounds(&c, spec->utc)) { |
313cefa1 | 1238 | c.tm_year++; |
36697dc0 LP |
1239 | c.tm_mon = 0; |
1240 | c.tm_mday = 1; | |
436dd70f | 1241 | c.tm_hour = c.tm_min = c.tm_sec = tm_usec = 0; |
36697dc0 LP |
1242 | continue; |
1243 | } | |
1244 | ||
8ea80351 | 1245 | r = find_matching_component(spec, spec->day, &c, &c.tm_mday); |
36697dc0 | 1246 | if (r > 0) |
436dd70f | 1247 | c.tm_hour = c.tm_min = c.tm_sec = tm_usec = 0; |
51ffa239 | 1248 | if (r < 0 || tm_out_of_bounds(&c, spec->utc)) { |
313cefa1 | 1249 | c.tm_mon++; |
36697dc0 | 1250 | c.tm_mday = 1; |
436dd70f | 1251 | c.tm_hour = c.tm_min = c.tm_sec = tm_usec = 0; |
36697dc0 LP |
1252 | continue; |
1253 | } | |
1254 | ||
51ffa239 | 1255 | if (!matches_weekday(spec->weekdays_bits, &c, spec->utc)) { |
36697dc0 | 1256 | c.tm_mday++; |
436dd70f | 1257 | c.tm_hour = c.tm_min = c.tm_sec = tm_usec = 0; |
36697dc0 LP |
1258 | continue; |
1259 | } | |
1260 | ||
8ea80351 | 1261 | r = find_matching_component(spec, spec->hour, &c, &c.tm_hour); |
36697dc0 | 1262 | if (r > 0) |
a022d76e | 1263 | c.tm_min = c.tm_sec = tm_usec = 0; |
51ffa239 | 1264 | if (r < 0 || tm_out_of_bounds(&c, spec->utc)) { |
313cefa1 | 1265 | c.tm_mday++; |
436dd70f | 1266 | c.tm_hour = c.tm_min = c.tm_sec = tm_usec = 0; |
36697dc0 LP |
1267 | continue; |
1268 | } | |
1269 | ||
8ea80351 | 1270 | r = find_matching_component(spec, spec->minute, &c, &c.tm_min); |
36697dc0 | 1271 | if (r > 0) |
a022d76e | 1272 | c.tm_sec = tm_usec = 0; |
51ffa239 | 1273 | if (r < 0 || tm_out_of_bounds(&c, spec->utc)) { |
313cefa1 | 1274 | c.tm_hour++; |
436dd70f | 1275 | c.tm_min = c.tm_sec = tm_usec = 0; |
36697dc0 LP |
1276 | continue; |
1277 | } | |
1278 | ||
436dd70f | 1279 | c.tm_sec = c.tm_sec * USEC_PER_SEC + tm_usec; |
8ea80351 | 1280 | r = find_matching_component(spec, spec->microsecond, &c, &c.tm_sec); |
436dd70f HV |
1281 | tm_usec = c.tm_sec % USEC_PER_SEC; |
1282 | c.tm_sec /= USEC_PER_SEC; | |
1283 | ||
51ffa239 | 1284 | if (r < 0 || tm_out_of_bounds(&c, spec->utc)) { |
313cefa1 | 1285 | c.tm_min++; |
436dd70f | 1286 | c.tm_sec = tm_usec = 0; |
36697dc0 LP |
1287 | continue; |
1288 | } | |
1289 | ||
36697dc0 | 1290 | *tm = c; |
436dd70f | 1291 | *usec = tm_usec; |
36697dc0 LP |
1292 | return 0; |
1293 | } | |
1294 | } | |
1295 | ||
1296 | int calendar_spec_next_usec(const CalendarSpec *spec, usec_t usec, usec_t *next) { | |
1297 | struct tm tm; | |
1298 | time_t t; | |
1299 | int r; | |
436dd70f | 1300 | usec_t tm_usec; |
36697dc0 LP |
1301 | |
1302 | assert(spec); | |
1303 | assert(next); | |
1304 | ||
1bb4b028 LP |
1305 | if (usec > USEC_TIMESTAMP_FORMATTABLE_MAX) |
1306 | return -EINVAL; | |
1307 | ||
436dd70f HV |
1308 | usec++; |
1309 | t = (time_t) (usec / USEC_PER_SEC); | |
51ffa239 | 1310 | assert_se(localtime_or_gmtime_r(&t, &tm, spec->utc)); |
436dd70f | 1311 | tm_usec = usec % USEC_PER_SEC; |
36697dc0 | 1312 | |
436dd70f | 1313 | r = find_next(spec, &tm, &tm_usec); |
36697dc0 LP |
1314 | if (r < 0) |
1315 | return r; | |
1316 | ||
51ffa239 | 1317 | t = mktime_or_timegm(&tm, spec->utc); |
c477ff14 | 1318 | if (t < 0) |
36697dc0 LP |
1319 | return -EINVAL; |
1320 | ||
436dd70f | 1321 | *next = (usec_t) t * USEC_PER_SEC + tm_usec; |
36697dc0 LP |
1322 | return 0; |
1323 | } |