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conf-parser: pin seen config files
[thirdparty/systemd.git] / src / shared / conf-parser.c
CommitLineData
db9ecf05 1/* SPDX-License-Identifier: LGPL-2.1-or-later */
a7334b09 2
ed5bcfbe 3#include <errno.h>
a8fbdf54
TA		 4#include <limits.h>
5#include <stdint.h>
07630cea 6#include <stdio.h>
ed5bcfbe 7#include <stdlib.h>
a8fbdf54 8#include <sys/types.h>
07630cea 9
b5efdb8a 10#include "alloc-util.h"
e8461023 11#include "conf-files.h"
6bedfcbb 12#include "conf-parser.h"
28db6fbf 13#include "constants.h"
fa787a13 14#include "dns-domain.h"
3f87eaa5 15#include "escape.h"
0ec2a7a1 16#include "ether-addr-util.h"
a8fbdf54 17#include "extract-word.h"
6bedfcbb 18#include "fd-util.h"
e6dde451 19#include "fileio.h"
f4f15635 20#include "fs-util.h"
9ac2f3c4 21#include "hash-funcs.h"
fa787a13 22#include "hostname-util.h"
aea3f594 23#include "id128-util.h"
cf074772 24#include "in-addr-util.h"
16354eff 25#include "log.h"
07630cea 26#include "macro.h"
f5947a5e 27#include "missing_network.h"
d8b4d14d 28#include "nulstr-util.h"
c3eaba2d 29#include "parse-helpers.h"
6bedfcbb 30#include "parse-util.h"
9eb977db 31#include "path-util.h"
ed5033fd 32#include "percent-util.h"
7b3e062c 33#include "process-util.h"
ef118d00 34#include "rlimit-util.h"
12963533 35#include "sd-id128.h"
0ec2a7a1 36#include "set.h"
f757855e 37#include "signal-util.h"
d31645ad 38#include "socket-util.h"
bdb2d3c6 39#include "stat-util.h"
07630cea
LP		 40#include "string-util.h"
41#include "strv.h"
7b3e062c 42#include "syslog-util.h"
a8fbdf54 43#include "time-util.h"
07630cea 44#include "utf8.h"
e8e581bf 45
9ac2f3c4
MY		 46DEFINE_PRIVATE_HASH_OPS_WITH_VALUE_DESTRUCTOR(config_file_hash_ops_fclose,
47 char, path_hash_func, path_compare,
48 FILE, safe_fclose);
49
f975e971 50int config_item_table_lookup(
e9f3d2d5 51 const void *table,
ed5bcfbe 52 const char *section,
ed5bcfbe 53 const char *lvalue,
0b954099
LP		 54 ConfigParserCallback *ret_func,
55 int *ret_ltype,
56 void **ret_data,
ed5bcfbe
LP		 57 void *userdata) {
58
f975e971 59 assert(table);
ed5bcfbe 60 assert(lvalue);
0b954099
LP		 61 assert(ret_func);
62 assert(ret_ltype);
63 assert(ret_data);
ed5bcfbe 64
62c9beaa 65 for (const ConfigTableItem *t = table; t->lvalue; t++) {
ed5bcfbe 66
f975e971 67 if (!streq(lvalue, t->lvalue))
ed5bcfbe
LP		 68 continue;
69
f975e971 70 if (!streq_ptr(section, t->section))
ed5bcfbe
LP		 71 continue;
72
0b954099
LP		 73 *ret_func = t->parse;
74 *ret_ltype = t->ltype;
75 *ret_data = t->data;
f975e971
LP		 76 return 1;
77 }
ed5bcfbe 78
0b954099
LP		 79 *ret_func = NULL;
80 *ret_ltype = 0;
81 *ret_data = NULL;
f975e971
LP		 82 return 0;
83}
10e87ee7 84
f975e971 85int config_item_perf_lookup(
e9f3d2d5 86 const void *table,
f975e971
LP		 87 const char *section,
88 const char *lvalue,
0b954099
LP		 89 ConfigParserCallback *ret_func,
90 int *ret_ltype,
91 void **ret_data,
f975e971
LP		 92 void *userdata) {
93
94 ConfigPerfItemLookup lookup = (ConfigPerfItemLookup) table;
95 const ConfigPerfItem *p;
96
97 assert(table);
98 assert(lvalue);
0b954099
LP		 99 assert(ret_func);
100 assert(ret_ltype);
101 assert(ret_data);
f975e971 102
4472fa6d
LP		 103 if (section) {
104 const char *key;
f975e971 105
4472fa6d 106 key = strjoina(section, ".", lvalue);
f975e971 107 p = lookup(key, strlen(key));
4472fa6d
LP		 108 } else
109 p = lookup(lvalue, strlen(lvalue));
0b954099
LP		 110 if (!p) {
111 *ret_func = NULL;
112 *ret_ltype = 0;
113 *ret_data = NULL;
f975e971 114 return 0;
0b954099 115 }
f975e971 116
0b954099
LP		 117 *ret_func = p->parse;
118 *ret_ltype = p->ltype;
119 *ret_data = (uint8_t*) userdata + p->offset;
f975e971
LP		 120 return 1;
121}
122
123/* Run the user supplied parser for an assignment */
bcde742e
LP		 124static int next_assignment(
125 const char *unit,
126 const char *filename,
127 unsigned line,
128 ConfigItemLookup lookup,
129 const void *table,
130 const char *section,
131 unsigned section_line,
132 const char *lvalue,
133 const char *rvalue,
134 ConfigParseFlags flags,
135 void *userdata) {
f975e971
LP		 136
137 ConfigParserCallback func = NULL;
138 int ltype = 0;
139 void *data = NULL;
140 int r;
141
142 assert(filename);
143 assert(line > 0);
144 assert(lookup);
145 assert(lvalue);
146 assert(rvalue);
147
148 r = lookup(table, section, lvalue, &func, &ltype, &data, userdata);
149 if (r < 0)
150 return r;
d937fbbd 151 if (r > 0) {
0b954099
LP		 152 if (!func)
153 return 0;
d937fbbd 154
0b954099
LP		 155 return func(unit, filename, line, section, section_line,
156 lvalue, ltype, rvalue, data, userdata);
d937fbbd 157 }
f975e971 158
46205bb6 159 /* Warn about unknown non-extension fields. */
bcde742e 160 if (!(flags & CONFIG_PARSE_RELAXED) && !startswith(lvalue, "X-"))
28f30f40
ZJS		 161 log_syntax(unit, LOG_WARNING, filename, line, 0,
162 "Unknown key name '%s' in section '%s', ignoring.", lvalue, section);
46205bb6 163
f1857be0 164 return 0;
ed5bcfbe
LP		 165}
166
8a37ce65 167/* Parse a single logical line */
bcde742e
LP		 168static int parse_line(
169 const char* unit,
170 const char *filename,
171 unsigned line,
172 const char *sections,
173 ConfigItemLookup lookup,
174 const void *table,
175 ConfigParseFlags flags,
176 char **section,
177 unsigned *section_line,
178 bool *section_ignored,
73a4ac8a 179 char *l, /* is modified */
bcde742e 180 void *userdata) {
f975e971 181
7ade8982 182 char *e;
ed5bcfbe 183
f975e971
LP		 184 assert(filename);
185 assert(line > 0);
186 assert(lookup);
187 assert(l);
188
b2aa81ef 189 l = strstrip(l);
73a4ac8a 190 if (isempty(l))
ed5bcfbe 191 return 0;
1ea86b18 192
73a4ac8a 193 if (l[0] == '\n')
1ea86b18 194 return 0;
ed5bcfbe 195
78d17fa0
YW		 196 if (!utf8_is_valid(l))
197 return log_syntax_invalid_utf8(unit, LOG_WARNING, filename, line, l);
198
deec0b6d
LP		 199 if (l[0] == '[') {
200 _cleanup_free_ char *n = NULL;
ed5bcfbe 201 size_t k;
ed5bcfbe 202
b2aa81ef 203 k = strlen(l);
ed5bcfbe
LP		 204 assert(k > 0);
205
3de39a1a
YW		 206 if (l[k-1] != ']')
207 return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EBADMSG), "Invalid section header '%s'", l);
ed5bcfbe 208
f975e971
LP		 209 n = strndup(l+1, k-2);
210 if (!n)
7a602af0 211 return log_oom();
ed5bcfbe 212
cec7f09d
LP		 213 if (!string_is_safe(n))
214 return log_syntax(unit, LOG_ERR, filename, line, SYNTHETIC_ERRNO(EBADMSG), "Bad characters in section header '%s'", l);
215
f975e971 216 if (sections && !nulstr_contains(sections, n)) {
73a4ac8a 217 bool ignore;
42f4e3c4 218
73a4ac8a 219 ignore = (flags & CONFIG_PARSE_RELAXED) || startswith(n, "X-");
ddeb3f5d
ZJS		 220
221 if (!ignore)
222 NULSTR_FOREACH(t, sections)
73a4ac8a 223 if (streq_ptr(n, startswith(t, "-"))) { /* Ignore sections prefixed with "-" in valid section list */
ddeb3f5d
ZJS		 224 ignore = true;
225 break;
226 }
227
228 if (!ignore)
12ca818f 229 log_syntax(unit, LOG_WARNING, filename, line, 0, "Unknown section '%s'. Ignoring.", n);
f975e971 230
a1e58e8e 231 *section = mfree(*section);
71a61510 232 *section_line = 0;
342aea19 233 *section_ignored = true;
f975e971 234 } else {
97b9c506 235 free_and_replace(*section, n);
71a61510 236 *section_line = line;
342aea19 237 *section_ignored = false;
f975e971 238 }
ed5bcfbe
LP		 239
240 return 0;
241 }
242
62f168a0 243 if (sections && !*section) {
bcde742e 244 if (!(flags & CONFIG_PARSE_RELAXED) && !*section_ignored)
12ca818f 245 log_syntax(unit, LOG_WARNING, filename, line, 0, "Assignment outside of section. Ignoring.");
62f168a0 246
10e87ee7 247 return 0;
62f168a0 248 }
10e87ee7 249
f975e971 250 e = strchr(l, '=');
2d4fffb0
ZJS		 251 if (!e)
252 return log_syntax(unit, LOG_WARNING, filename, line, 0,
253 "Missing '=', ignoring line.");
8be8ed8c
ZJS		 254 if (e == l)
255 return log_syntax(unit, LOG_WARNING, filename, line, 0,
256 "Missing key name before '=', ignoring line.");
ed5bcfbe
LP		 257
258 *e = 0;
259 e++;
260
e8e581bf
ZJS		 261 return next_assignment(unit,
262 filename,
263 line,
264 lookup,
265 table,
266 *section,
71a61510 267 *section_line,
e8e581bf
ZJS		 268 strstrip(l),
269 strstrip(e),
bcde742e 270 flags,
e8e581bf 271 userdata);
ed5bcfbe
LP		 272}
273
274/* Go through the file and parse each line */
c2f781bc
YW		 275int config_parse(
276 const char *unit,
277 const char *filename,
278 FILE *f,
279 const char *sections,
280 ConfigItemLookup lookup,
281 const void *table,
282 ConfigParseFlags flags,
283 void *userdata,
8524db50 284 struct stat *ret_stat) {
f975e971 285
7fd1b19b
HH		 286 _cleanup_free_ char *section = NULL, *continuation = NULL;
287 _cleanup_fclose_ FILE *ours = NULL;
71a61510 288 unsigned line = 0, section_line = 0;
f9761a89 289 bool section_ignored = false, bom_seen = false;
8524db50 290 struct stat st;
14f594b9 291 int r, fd;
ed5bcfbe
LP		 292
293 assert(filename);
f975e971 294 assert(lookup);
ed5bcfbe 295
87f0e418 296 if (!f) {
245802dd 297 f = ours = fopen(filename, "re");
f975e971 298 if (!f) {
36f822c4
ZJS		 299 /* Only log on request, except for ENOENT,
300 * since we return 0 to the caller. */
bcde742e 301 if ((flags & CONFIG_PARSE_WARN) || errno == ENOENT)
b8b846d7
LP		 302 log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_ERR, errno,
303 "Failed to open configuration file '%s': %m", filename);
8524db50
YW		 304
305 if (errno == ENOENT) {
306 if (ret_stat)
307 *ret_stat = (struct stat) {};
308
309 return 0;
310 }
311
312 return -errno;
87f0e418 313 }
ed5bcfbe
LP		 314 }
315
14f594b9 316 fd = fileno(f);
4f9ff96a 317 if (fd >= 0) { /* stream might not have an fd, let's be careful hence */
4f9ff96a
LP		 318
319 if (fstat(fd, &st) < 0)
320 return log_full_errno(FLAGS_SET(flags, CONFIG_PARSE_WARN) ? LOG_ERR : LOG_DEBUG, errno,
321 "Failed to fstat(%s): %m", filename);
322
323 (void) stat_warn_permissions(filename, &st);
9fd8d678 324 } else
8524db50 325 st = (struct stat) {};
fdb9161c 326
9dd7ea9a 327 for (;;) {
e6dde451 328 _cleanup_free_ char *buf = NULL;
3dab2943 329 bool escaped = false;
92b5e605 330 char *l, *p, *e;
ed5bcfbe 331
e6dde451
LP		 332 r = read_line(f, LONG_LINE_MAX, &buf);
333 if (r == 0)
334 break;
335 if (r == -ENOBUFS) {
bcde742e 336 if (flags & CONFIG_PARSE_WARN)
e6dde451
LP		 337 log_error_errno(r, "%s:%u: Line too long", filename, line);
338
339 return r;
340 }
341 if (r < 0) {
5aca2e67 342 if (FLAGS_SET(flags, CONFIG_PARSE_WARN))
e6dde451 343 log_error_errno(r, "%s:%u: Error while reading configuration file: %m", filename, line);
ed5bcfbe 344
e6dde451 345 return r;
ed5bcfbe
LP		 346 }
347
68c1ac15
YW		 348 line++;
349
0ef69585
YW		 350 l = skip_leading_chars(buf, WHITESPACE);
351 if (*l != '\0' && strchr(COMMENTS, *l))
9adbfeb3
YW		 352 continue;
353
9dd7ea9a 354 l = buf;
f9761a89 355 if (!bom_seen) {
e6dde451 356 char *q;
9dd7ea9a 357
e6dde451
LP		 358 q = startswith(buf, UTF8_BYTE_ORDER_MARK);
359 if (q) {
360 l = q;
f9761a89 361 bom_seen = true;
e6dde451
LP		 362 }
363 }
3dab2943
LP		 364
365 if (continuation) {
e6dde451 366 if (strlen(continuation) + strlen(l) > LONG_LINE_MAX) {
bcde742e 367 if (flags & CONFIG_PARSE_WARN)
e6dde451
LP		 368 log_error("%s:%u: Continuation line too long", filename, line);
369 return -ENOBUFS;
370 }
371
c2bc710b 372 if (!strextend(&continuation, l)) {
bcde742e 373 if (flags & CONFIG_PARSE_WARN)
36f822c4 374 log_oom();
245802dd 375 return -ENOMEM;
36f822c4 376 }
3dab2943 377
92b5e605 378 p = continuation;
3dab2943
LP		 379 } else
380 p = l;
381
382 for (e = p; *e; e++) {
383 if (escaped)
384 escaped = false;
385 else if (*e == '\\')
386 escaped = true;
387 }
388
389 if (escaped) {
390 *(e-1) = ' ';
391
92b5e605 392 if (!continuation) {
f975e971 393 continuation = strdup(l);
36f822c4 394 if (!continuation) {
bcde742e 395 if (flags & CONFIG_PARSE_WARN)
36f822c4 396 log_oom();
245802dd 397 return -ENOMEM;
36f822c4 398 }
3dab2943
LP		 399 }
400
401 continue;
402 }
403
e8e581bf
ZJS		 404 r = parse_line(unit,
405 filename,
68c1ac15 406 line,
e8e581bf
ZJS		 407 sections,
408 lookup,
409 table,
bcde742e 410 flags,
e8e581bf 411 &section,
71a61510 412 &section_line,
342aea19 413 &section_ignored,
e8e581bf
ZJS		 414 p,
415 userdata);
36f822c4 416 if (r < 0) {
bcde742e 417 if (flags & CONFIG_PARSE_WARN)
e6dde451 418 log_warning_errno(r, "%s:%u: Failed to parse file: %m", filename, line);
245802dd 419 return r;
36f822c4 420 }
92b5e605
LP		 421
422 continuation = mfree(continuation);
ed5bcfbe
LP		 423 }
424
4f29e0db
FB		 425 if (continuation) {
426 r = parse_line(unit,
427 filename,
428 ++line,
429 sections,
430 lookup,
431 table,
432 flags,
433 &section,
434 &section_line,
435 &section_ignored,
436 continuation,
437 userdata);
438 if (r < 0) {
439 if (flags & CONFIG_PARSE_WARN)
440 log_warning_errno(r, "%s:%u: Failed to parse file: %m", filename, line);
441 return r;
4f29e0db
FB		 442 }
443 }
444
8524db50
YW		 445 if (ret_stat)
446 *ret_stat = st;
4f9ff96a 447
8b8024f1 448 return 1;
ed5bcfbe
LP		 449}
450
acfbd71c 451int hashmap_put_stats_by_path(Hashmap **stats_by_path, const char *path, const struct stat *st) {
8524db50
YW		 452 _cleanup_free_ struct stat *st_copy = NULL;
453 _cleanup_free_ char *path_copy = NULL;
454 int r;
455
456 assert(stats_by_path);
457 assert(path);
458 assert(st);
459
460 r = hashmap_ensure_allocated(stats_by_path, &path_hash_ops_free_free);
461 if (r < 0)
462 return r;
463
464 st_copy = newdup(struct stat, st, 1);
465 if (!st_copy)
466 return -ENOMEM;
467
468 path_copy = strdup(path);
469 if (!path)
470 return -ENOMEM;
471
472 r = hashmap_put(*stats_by_path, path_copy, st_copy);
473 if (r < 0)
474 return r;
475
476 assert(r > 0);
477 TAKE_PTR(path_copy);
478 TAKE_PTR(st_copy);
479 return 0;
480}
481
23bb31aa 482static int config_parse_many_files(
8b8024f1 483 const char* const* conf_files,
23bb31aa 484 char **files,
43688c49
ZJS		 485 const char *sections,
486 ConfigItemLookup lookup,
487 const void *table,
bcde742e 488 ConfigParseFlags flags,
4f9ff96a 489 void *userdata,
8524db50 490 Hashmap **ret_stats_by_path) {
43688c49 491
8524db50 492 _cleanup_hashmap_free_ Hashmap *stats_by_path = NULL;
9ac2f3c4 493 _cleanup_ordered_hashmap_free_ OrderedHashmap *dropins = NULL;
93f1da45 494 _cleanup_set_free_ Set *inodes = NULL;
8524db50 495 struct stat st;
e8461023
JT		 496 int r;
497
8524db50
YW		 498 if (ret_stats_by_path) {
499 stats_by_path = hashmap_new(&path_hash_ops_free_free);
500 if (!stats_by_path)
501 return -ENOMEM;
502 }
503
93f1da45
MY		 504 STRV_FOREACH(fn, files) {
505 _cleanup_free_ struct stat *st_dropin = NULL;
9ac2f3c4
MY		 506 _cleanup_fclose_ FILE *f = NULL;
507 int fd;
508
509 f = fopen(*fn, "re");
510 if (!f) {
511 if (errno == ENOENT)
512 continue;
513
514 return -errno;
515 }
516
517 fd = fileno(f);
518
519 r = ordered_hashmap_ensure_put(&dropins, &config_file_hash_ops_fclose, *fn, f);
520 if (r < 0) {
521 assert(r != -EEXIST);
522 return r;
523 }
524 assert(r > 0);
525 TAKE_PTR(f);
526
527 /* Get inodes for all drop-ins. Later we'll verify if main config is a symlink to or is
528 * symlinked as one of them. If so, we skip reading main config file directly. */
93f1da45
MY		 529
530 st_dropin = new(struct stat, 1);
531 if (!st_dropin)
532 return -ENOMEM;
533
9ac2f3c4
MY		 534 if (fstat(fd, st_dropin) < 0)
535 return -errno;
93f1da45
MY		 536
537 r = set_ensure_consume(&inodes, &inode_hash_ops, TAKE_PTR(st_dropin));
538 if (r < 0)
539 return r;
540 }
541
8b8024f1 542 /* First read the first found main config file. */
2034c8b8 543 STRV_FOREACH(fn, conf_files) {
9ac2f3c4
MY		 544 _cleanup_fclose_ FILE *f = NULL;
545
546 f = fopen(*fn, "re");
547 if (!f) {
548 if (errno == ENOENT)
549 continue;
550
551 return -errno;
552 }
553
93f1da45 554 if (inodes) {
9ac2f3c4
MY		 555 if (fstat(fileno(f), &st) < 0)
556 return -errno;
93f1da45
MY		 557
558 if (set_contains(inodes, &st)) {
9ac2f3c4 559 log_debug("%s: symlink to/symlinked as drop-in, will be read later.", *fn);
93f1da45
MY		 560 continue;
561 }
562 }
563
9ac2f3c4 564 r = config_parse(NULL, *fn, f, sections, lookup, table, flags, userdata, &st);
e8461023
JT		 565 if (r < 0)
566 return r;
9ac2f3c4
MY		 567 if (r > 0) {
568 if (ret_stats_by_path) {
569 r = hashmap_put_stats_by_path(&stats_by_path, *fn, &st);
570 if (r < 0)
571 return r;
572 }
8524db50 573
9ac2f3c4 574 break;
8524db50 575 }
e8461023
JT		 576 }
577
8b8024f1 578 /* Then read all the drop-ins. */
9ac2f3c4
MY		 579
580 const char *path_dropin;
581 FILE *f_dropin;
582 ORDERED_HASHMAP_FOREACH_KEY(f_dropin, path_dropin, dropins) {
583 r = config_parse(NULL, path_dropin, f_dropin, sections, lookup, table, flags, userdata, &st);
e8461023
JT		 584 if (r < 0)
585 return r;
8524db50
YW		 586 if (r == 0)
587 continue;
588
589 if (ret_stats_by_path) {
9ac2f3c4 590 r = hashmap_put_stats_by_path(&stats_by_path, path_dropin, &st);
8524db50
YW		 591 if (r < 0)
592 return r;
593 }
e8461023
JT		 594 }
595
8524db50
YW		 596 if (ret_stats_by_path)
597 *ret_stats_by_path = TAKE_PTR(stats_by_path);
4f9ff96a 598
e8461023
JT		 599 return 0;
600}
601
07e0ffc8
FB		 602/* Parse one main config file located in /etc/systemd and its drop-ins, which is what all systemd daemons
603 * do. */
604int config_parse_config_file(
23bb31aa 605 const char *conf_file,
23bb31aa
ZJS		 606 const char *sections,
607 ConfigItemLookup lookup,
608 const void *table,
bcde742e 609 ConfigParseFlags flags,
07e0ffc8 610 void *userdata) {
23bb31aa 611
07e0ffc8
FB		 612 _cleanup_strv_free_ char **dropins = NULL, **dropin_dirs = NULL;
613 char **conf_paths = CONF_PATHS_STRV("");
23bb31aa
ZJS		 614 int r;
615
07e0ffc8
FB		 616 assert(conf_file);
617
618 /* build the dropin dir list */
619 dropin_dirs = new0(char*, strv_length(conf_paths) + 1);
620 if (!dropin_dirs) {
621 if (flags & CONFIG_PARSE_WARN)
622 return log_oom();
623 return -ENOMEM;
624 }
625
626 size_t i = 0;
627 STRV_FOREACH(p, conf_paths) {
628 char *d;
629
630 d = strjoin(*p, "systemd/", conf_file, ".d");
631 if (!d) {
632 if (flags & CONFIG_PARSE_WARN)
633 return log_oom();
634 return -ENOMEM;
635 }
636
637 dropin_dirs[i++] = d;
638 }
639
640 r = conf_files_list_strv(&dropins, ".conf", NULL, 0, (const char**) dropin_dirs);
23bb31aa
ZJS		 641 if (r < 0)
642 return r;
643
07e0ffc8
FB		 644 const char *sysconf_file = strjoina(PKGSYSCONFDIR, "/", conf_file);
645
646 return config_parse_many_files(STRV_MAKE_CONST(sysconf_file), dropins,
647 sections, lookup, table, flags, userdata, NULL);
23bb31aa
ZJS		 648}
649
650/* Parse each config file in the directories specified as strv. */
651int config_parse_many(
8b8024f1 652 const char* const* conf_files,
23bb31aa
ZJS		 653 const char* const* conf_file_dirs,
654 const char *dropin_dirname,
947f59ba 655 const char *root,
23bb31aa
ZJS		 656 const char *sections,
657 ConfigItemLookup lookup,
658 const void *table,
bcde742e 659 ConfigParseFlags flags,
9f83091e 660 void *userdata,
ead3a3fc
RP		 661 Hashmap **ret_stats_by_path,
662 char ***ret_dropin_files) {
23bb31aa 663
23bb31aa 664 _cleanup_strv_free_ char **files = NULL;
23bb31aa
ZJS		 665 int r;
666
bdb2d3c6
YW		 667 assert(conf_file_dirs);
668 assert(dropin_dirname);
669 assert(sections);
670 assert(table);
671
35c0e344 672 r = conf_files_list_dropins(&files, dropin_dirname, root, conf_file_dirs);
bdb2d3c6
YW		 673 if (r < 0)
674 return r;
675
ead3a3fc
RP		 676 r = config_parse_many_files(conf_files, files, sections, lookup, table, flags, userdata, ret_stats_by_path);
677 if (r < 0)
678 return r;
679
680 if (ret_dropin_files)
681 *ret_dropin_files = TAKE_PTR(files);
682
683 return 0;
bdb2d3c6
YW		 684}
685
3f4dfd9d 686static int dropins_get_stats_by_path(
bdb2d3c6
YW		 687 const char* conf_file,
688 const char* const* conf_file_dirs,
3f4dfd9d 689 Hashmap **stats_by_path) {
bdb2d3c6
YW		 690
691 _cleanup_strv_free_ char **files = NULL;
692 _cleanup_free_ char *dropin_dirname = NULL;
bdb2d3c6
YW		 693 int r;
694
695 assert(conf_file);
696 assert(conf_file_dirs);
697 assert(stats_by_path);
698
bdb2d3c6 699 r = path_extract_filename(conf_file, &dropin_dirname);
23bb31aa
ZJS		 700 if (r < 0)
701 return r;
bdb2d3c6
YW		 702 if (r == O_DIRECTORY)
703 return -EINVAL;
704
705 if (!strextend(&dropin_dirname, ".d"))
706 return -ENOMEM;
23bb31aa 707
35c0e344 708 r = conf_files_list_dropins(&files, dropin_dirname, /* root = */ NULL, conf_file_dirs);
23bb31aa
ZJS		 709 if (r < 0)
710 return r;
711
bdb2d3c6 712 STRV_FOREACH(fn, files) {
3f4dfd9d
YW		 713 struct stat st;
714
bdb2d3c6
YW		 715 if (stat(*fn, &st) < 0) {
716 if (errno == ENOENT)
717 continue;
718
719 return -errno;
720 }
721
3f4dfd9d 722 r = hashmap_put_stats_by_path(stats_by_path, *fn, &st);
bdb2d3c6
YW		 723 if (r < 0)
724 return r;
725 }
726
727 return 0;
728}
729
730int config_get_stats_by_path(
731 const char *suffix,
732 const char *root,
733 unsigned flags,
734 const char* const* dirs,
3f4dfd9d 735 bool check_dropins,
bdb2d3c6
YW		 736 Hashmap **ret) {
737
738 _cleanup_hashmap_free_ Hashmap *stats_by_path = NULL;
739 _cleanup_strv_free_ char **files = NULL;
740 int r;
741
742 assert(suffix);
743 assert(dirs);
744 assert(ret);
745
3f4dfd9d
YW		 746 /* Unlike config_parse(), this does not support stream. */
747
bdb2d3c6
YW		 748 r = conf_files_list_strv(&files, suffix, root, flags, dirs);
749 if (r < 0)
750 return r;
751
bdb2d3c6 752 STRV_FOREACH(f, files) {
3f4dfd9d
YW		 753 struct stat st;
754
755 /* First read the main config file. */
756 if (stat(*f, &st) < 0) {
757 if (errno == ENOENT)
758 continue;
759
760 return -errno;
761 }
762
763 r = hashmap_put_stats_by_path(&stats_by_path, *f, &st);
764 if (r < 0)
765 return r;
766
767 if (!check_dropins)
768 continue;
769
770 /* Then read all the drop-ins if requested. */
771 r = dropins_get_stats_by_path(*f, dirs, &stats_by_path);
bdb2d3c6
YW		 772 if (r < 0)
773 return r;
774 }
775
776 *ret = TAKE_PTR(stats_by_path);
777 return 0;
778}
779
780bool stats_by_path_equal(Hashmap *a, Hashmap *b) {
781 struct stat *st_a, *st_b;
782 const char *path;
783
784 if (hashmap_size(a) != hashmap_size(b))
785 return false;
786
787 HASHMAP_FOREACH_KEY(st_a, path, a) {
788 st_b = hashmap_get(b, path);
789 if (!st_b)
790 return false;
791
792 if (!stat_inode_unmodified(st_a, st_b))
793 return false;
794 }
795
796 return true;
23bb31aa
ZJS		 797}
798
307fe3cd
YW		 799static void config_section_hash_func(const ConfigSection *c, struct siphash *state) {
800 siphash24_compress_string(c->filename, state);
801 siphash24_compress(&c->line, sizeof(c->line), state);
802}
803
804static int config_section_compare_func(const ConfigSection *x, const ConfigSection *y) {
805 int r;
806
807 r = strcmp(x->filename, y->filename);
808 if (r != 0)
809 return r;
810
811 return CMP(x->line, y->line);
812}
813
814DEFINE_HASH_OPS(config_section_hash_ops, ConfigSection, config_section_hash_func, config_section_compare_func);
815
08ca764d 816int config_section_new(const char *filename, unsigned line, ConfigSection **ret) {
307fe3cd
YW		 817 ConfigSection *cs;
818
08ca764d
YW		 819 assert(filename);
820 assert(line > 0);
821 assert(ret);
822
307fe3cd
YW		 823 cs = malloc0(offsetof(ConfigSection, filename) + strlen(filename) + 1);
824 if (!cs)
825 return -ENOMEM;
826
827 strcpy(cs->filename, filename);
828 cs->line = line;
829
08ca764d 830 *ret = TAKE_PTR(cs);
307fe3cd
YW		 831 return 0;
832}
833
e63c6e9f
YW		 834int _hashmap_by_section_find_unused_line(
835 HashmapBase *entries_by_section,
d9171a23
YW		 836 const char *filename,
837 unsigned *ret) {
838
307fe3cd
YW		 839 ConfigSection *cs;
840 unsigned n = 0;
841 void *entry;
842
e63c6e9f 843 HASHMAP_BASE_FOREACH_KEY(entry, cs, entries_by_section) {
d9171a23
YW		 844 if (filename && !streq(cs->filename, filename))
845 continue;
846 n = MAX(n, cs->line);
847 }
848
849 /* overflow? */
850 if (n >= UINT_MAX)
851 return -EFBIG;
307fe3cd 852
d9171a23
YW		 853 *ret = n + 1;
854 return 0;
307fe3cd
YW		 855}
856
eb3491d9 857#define DEFINE_PARSER(type, vartype, conv_func) \
2d1729ca 858 DEFINE_CONFIG_PARSE_PTR(config_parse_##type, conv_func, vartype, "Failed to parse " #type " value")
94d75d64
LP		 859
860DEFINE_PARSER(int, int, safe_atoi);
861DEFINE_PARSER(long, long, safe_atoli);
134e24e1 862DEFINE_PARSER(uint8, uint8_t, safe_atou8);
c7440e74 863DEFINE_PARSER(uint16, uint16_t, safe_atou16);
94d75d64 864DEFINE_PARSER(uint32, uint32_t, safe_atou32);
b57ebc60 865DEFINE_PARSER(int32, int32_t, safe_atoi32);
94d75d64
LP		 866DEFINE_PARSER(uint64, uint64_t, safe_atou64);
867DEFINE_PARSER(unsigned, unsigned, safe_atou);
868DEFINE_PARSER(double, double, safe_atod);
869DEFINE_PARSER(nsec, nsec_t, parse_nsec);
870DEFINE_PARSER(sec, usec_t, parse_sec);
7b61ce3c 871DEFINE_PARSER(sec_def_infinity, usec_t, parse_sec_def_infinity);
94d75d64 872DEFINE_PARSER(mode, mode_t, parse_mode);
65a0ede2 873DEFINE_PARSER(pid, pid_t, parse_pid);
ed5bcfbe 874
c2f781bc
YW		 875int config_parse_iec_size(
876 const char* unit,
877 const char *filename,
878 unsigned line,
879 const char *section,
880 unsigned section_line,
881 const char *lvalue,
882 int ltype,
883 const char *rvalue,
884 void *data,
885 void *userdata) {
ed5bcfbe 886
99534007 887 size_t *sz = ASSERT_PTR(data);
59f448cf 888 uint64_t v;
e8e581bf 889 int r;
ed5bcfbe
LP		 890
891 assert(filename);
892 assert(lvalue);
893 assert(rvalue);
ed5bcfbe 894
59f448cf 895 r = parse_size(rvalue, 1024, &v);
1e5f4e8b
YW		 896 if (r >= 0 && (uint64_t) (size_t) v != v)
897 r = -ERANGE;
898 if (r < 0) {
d96edb2c 899 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse size value '%s', ignoring: %m", rvalue);
9ba1a159
LP		 900 return 0;
901 }
902
59f448cf 903 *sz = (size_t) v;
9ba1a159
LP		 904 return 0;
905}
906
50299121 907int config_parse_si_uint64(
78f3c4bc
LP		 908 const char* unit,
909 const char *filename,
910 unsigned line,
911 const char *section,
912 unsigned section_line,
913 const char *lvalue,
914 int ltype,
915 const char *rvalue,
916 void *data,
917 void *userdata) {
5556b5fe 918
99534007 919 uint64_t *sz = ASSERT_PTR(data);
5556b5fe
LP		 920 int r;
921
922 assert(filename);
923 assert(lvalue);
924 assert(rvalue);
5556b5fe 925
50299121 926 r = parse_size(rvalue, 1000, sz);
d96edb2c
YW		 927 if (r < 0)
928 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse size value '%s', ignoring: %m", rvalue);
5556b5fe 929
5556b5fe
LP		 930 return 0;
931}
9ba1a159 932
78f3c4bc
LP		 933int config_parse_iec_uint64(
934 const char* unit,
935 const char *filename,
936 unsigned line,
937 const char *section,
938 unsigned section_line,
939 const char *lvalue,
940 int ltype,
941 const char *rvalue,
942 void *data,
943 void *userdata) {
9ba1a159 944
99534007 945 uint64_t *bytes = ASSERT_PTR(data);
e8e581bf 946 int r;
9ba1a159
LP		 947
948 assert(filename);
949 assert(lvalue);
950 assert(rvalue);
9ba1a159 951
5556b5fe 952 r = parse_size(rvalue, 1024, bytes);
e8e581bf 953 if (r < 0)
d96edb2c 954 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse size value, ignoring: %s", rvalue);
ed5bcfbe 955
ed5bcfbe
LP		 956 return 0;
957}
958
6e8791a0
TB		 959int config_parse_iec_uint64_infinity(
960 const char* unit,
961 const char *filename,
962 unsigned line,
963 const char *section,
964 unsigned section_line,
965 const char *lvalue,
966 int ltype,
967 const char *rvalue,
968 void *data,
969 void *userdata) {
970
99534007 971 uint64_t *bytes = ASSERT_PTR(data);
6e8791a0
TB		 972
973 assert(rvalue);
6e8791a0
TB		 974
975 if (streq(rvalue, "infinity")) {
976 *bytes = UINT64_MAX;
977 return 0;
978 }
979
980 return config_parse_iec_uint64(unit, filename, line, section, section_line, lvalue, ltype, rvalue, data, userdata);
981}
982
c2f781bc
YW		 983int config_parse_bool(
984 const char* unit,
985 const char *filename,
986 unsigned line,
987 const char *section,
988 unsigned section_line,
989 const char *lvalue,
990 int ltype,
991 const char *rvalue,
992 void *data,
993 void *userdata) {
ed5bcfbe
LP		 994
995 int k;
99534007 996 bool *b = ASSERT_PTR(data);
2c75fb73 997 bool fatal = ltype;
ed5bcfbe
LP		 998
999 assert(filename);
1000 assert(lvalue);
1001 assert(rvalue);
ed5bcfbe 1002
e8e581bf
ZJS		 1003 k = parse_boolean(rvalue);
1004 if (k < 0) {
d96edb2c 1005 log_syntax(unit, fatal ? LOG_ERR : LOG_WARNING, filename, line, k,
2c75fb73
ZJS		 1006 "Failed to parse boolean value%s: %s",
1007 fatal ? "" : ", ignoring", rvalue);
1008 return fatal ? -ENOEXEC : 0;
ed5bcfbe
LP		 1009 }
1010
5d904a6a 1011 *b = k;
ed5bcfbe
LP		 1012 return 0;
1013}
1014
12963533
TH		 1015int config_parse_id128(
1016 const char *unit,
1017 const char *filename,
1018 unsigned line,
1019 const char *section,
1020 unsigned section_line,
1021 const char *lvalue,
1022 int ltype,
1023 const char *rvalue,
1024 void *data,
1025 void *userdata) {
1026
aea3f594 1027 sd_id128_t *result = data;
12963533
TH		 1028 int r;
1029
1030 assert(filename);
1031 assert(lvalue);
1032 assert(rvalue);
1033
aea3f594
ZJS		 1034 r = id128_from_string_nonzero(rvalue, result);
1035 if (r == -ENXIO)
1036 log_syntax(unit, LOG_WARNING, filename, line, r, "128-bit ID/UUID is all 0, ignoring: %s", rvalue);
1037 else if (r < 0)
da890466 1038 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse 128-bit ID/UUID, ignoring: %s", rvalue);
12963533 1039
12963533
TH		 1040 return 0;
1041}
1042
f757855e
LP		 1043int config_parse_tristate(
1044 const char* unit,
1045 const char *filename,
1046 unsigned line,
1047 const char *section,
1048 unsigned section_line,
1049 const char *lvalue,
1050 int ltype,
1051 const char *rvalue,
1052 void *data,
1053 void *userdata) {
1054
b71a721f 1055 int r, *t = ASSERT_PTR(data);
f757855e
LP		 1056
1057 assert(filename);
1058 assert(lvalue);
1059 assert(rvalue);
f757855e 1060
33f2de7b
YW		 1061 /* A tristate is pretty much a boolean, except that it can also take an empty string,
1062 * indicating "uninitialized", much like NULL is for a pointer type. */
1063
1064 if (isempty(rvalue)) {
1065 *t = -1;
1066 return 0;
1067 }
f757855e 1068
b71a721f
LP		 1069 r = parse_tristate(rvalue, t);
1070 if (r < 0) {
1071 log_syntax(unit, LOG_WARNING, filename, line, r,
33f2de7b 1072 "Failed to parse boolean value for %s=, ignoring: %s", lvalue, rvalue);
f757855e
LP		 1073 return 0;
1074 }
1075
f757855e
LP		 1076 return 0;
1077}
1078
8f2665a4
LP		 1079int config_parse_string(
1080 const char *unit,
1081 const char *filename,
1082 unsigned line,
1083 const char *section,
1084 unsigned section_line,
1085 const char *lvalue,
1086 int ltype,
1087 const char *rvalue,
1088 void *data,
1089 void *userdata) {
1090
3f87eaa5 1091 char **s = ASSERT_PTR(data);
ed5bcfbe
LP		 1092
1093 assert(filename);
1094 assert(lvalue);
1095 assert(rvalue);
ed5bcfbe 1096
3f87eaa5
YW		 1097 if (isempty(rvalue)) {
1098 *s = mfree(*s);
1099 return 0;
1100 }
2d17d699 1101
3f87eaa5
YW		 1102 if (FLAGS_SET(ltype, CONFIG_PARSE_STRING_SAFE) && !string_is_safe(rvalue)) {
1103 _cleanup_free_ char *escaped = NULL;
2d17d699 1104
3f87eaa5
YW		 1105 escaped = cescape(rvalue);
1106 log_syntax(unit, LOG_WARNING, filename, line, 0,
1107 "Specified string contains unsafe characters, ignoring: %s", strna(escaped));
2d17d699
LP		 1108 return 0;
1109 }
1110
e289ce7f
YW		 1111 if (FLAGS_SET(ltype, CONFIG_PARSE_STRING_ASCII) && !ascii_is_valid(rvalue)) {
1112 _cleanup_free_ char *escaped = NULL;
1113
1114 escaped = cescape(rvalue);
1115 log_syntax(unit, LOG_WARNING, filename, line, 0,
1116 "Specified string contains invalid ASCII characters, ignoring: %s", strna(escaped));
1117 return 0;
1118 }
1119
2d17d699
LP		 1120 return free_and_strdup_warn(s, empty_to_null(rvalue));
1121}
1122
fa787a13
YW		 1123int config_parse_dns_name(
1124 const char *unit,
1125 const char *filename,
1126 unsigned line,
1127 const char *section,
1128 unsigned section_line,
1129 const char *lvalue,
1130 int ltype,
1131 const char *rvalue,
1132 void *data,
1133 void *userdata) {
1134
1135 char **hostname = ASSERT_PTR(data);
1136 int r;
1137
1138 assert(filename);
1139 assert(lvalue);
1140 assert(rvalue);
1141
1142 if (isempty(rvalue)) {
1143 *hostname = mfree(*hostname);
1144 return 0;
1145 }
1146
1147 r = dns_name_is_valid(rvalue);
1148 if (r < 0) {
1149 log_syntax(unit, LOG_WARNING, filename, line, r,
1150 "Failed to check validity of DNS domain name '%s', ignoring assignment: %m", rvalue);
1151 return 0;
1152 }
1153 if (r == 0) {
1154 log_syntax(unit, LOG_WARNING, filename, line, 0,
1155 "Specified invalid DNS domain name, ignoring assignment: %s", rvalue);
1156 return 0;
1157 }
1158
1159 return free_and_strdup_warn(hostname, rvalue);
1160}
1161
1162int config_parse_hostname(
1163 const char *unit,
1164 const char *filename,
1165 unsigned line,
1166 const char *section,
1167 unsigned section_line,
1168 const char *lvalue,
1169 int ltype,
1170 const char *rvalue,
1171 void *data,
1172 void *userdata) {
1173
1174 char **hostname = ASSERT_PTR(data);
1175
1176 assert(filename);
1177 assert(lvalue);
1178 assert(rvalue);
1179
1180 if (isempty(rvalue)) {
1181 *hostname = mfree(*hostname);
1182 return 0;
1183 }
1184
1185 if (!hostname_is_valid(rvalue, 0)) {
1186 log_syntax(unit, LOG_WARNING, filename, line, 0,
1187 "Specified invalid hostname, ignoring assignment: %s", rvalue);
1188 return 0;
1189 }
1190
1191 return config_parse_dns_name(unit, filename, line, section, section_line,
1192 lvalue, ltype, rvalue, data, userdata);
1193}
1194
8f2665a4
LP		 1195int config_parse_path(
1196 const char *unit,
1197 const char *filename,
1198 unsigned line,
1199 const char *section,
1200 unsigned section_line,
1201 const char *lvalue,
1202 int ltype,
1203 const char *rvalue,
1204 void *data,
1205 void *userdata) {
034c6ed7 1206
c0d72c43 1207 _cleanup_free_ char *n = NULL;
2c75fb73 1208 bool fatal = ltype;
99534007 1209 char **s = ASSERT_PTR(data);
cd4f53c5 1210 int r;
034c6ed7
LP		 1211
1212 assert(filename);
1213 assert(lvalue);
1214 assert(rvalue);
034c6ed7 1215
8e7b5bd0 1216 if (isempty(rvalue))
0fe50629 1217 goto finalize;
0fe50629 1218
7f110ff9
LP		 1219 n = strdup(rvalue);
1220 if (!n)
74051b9b 1221 return log_oom();
034c6ed7 1222
cd4f53c5
YW		 1223 r = path_simplify_and_warn(n, PATH_CHECK_ABSOLUTE | (fatal ? PATH_CHECK_FATAL : 0), unit, filename, line, lvalue);
1224 if (r < 0)
1225 return fatal ? -ENOEXEC : 0;
01f78473 1226
0fe50629 1227finalize:
8e7b5bd0 1228 return free_and_replace(*s, n);
034c6ed7 1229}
57d42a5f 1230
8249bb72
LP		 1231int config_parse_strv(
1232 const char *unit,
1233 const char *filename,
1234 unsigned line,
1235 const char *section,
1236 unsigned section_line,
1237 const char *lvalue,
1238 int ltype,
1239 const char *rvalue,
1240 void *data,
1241 void *userdata) {
57d42a5f 1242
99534007 1243 char ***sv = ASSERT_PTR(data);
00d0fd06 1244 int r;
57d42a5f
LP		 1245
1246 assert(filename);
1247 assert(lvalue);
1248 assert(rvalue);
57d42a5f 1249
74051b9b 1250 if (isempty(rvalue)) {
8249bb72 1251 *sv = strv_free(*sv);
853b8397 1252 return 0;
74051b9b
LP		 1253 }
1254
d96edb2c 1255 for (const char *p = rvalue;;) {
34f253f0 1256 char *word = NULL;
00d0fd06 1257
d96edb2c 1258 r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE|EXTRACT_RETAIN_ESCAPE);
34f253f0 1259 if (r == 0)
d96edb2c 1260 return 0;
34f253f0 1261 if (r == -ENOMEM)
853b8397 1262 return log_oom();
34f253f0 1263 if (r < 0) {
d96edb2c
YW		 1264 log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
1265 return 0;
34f253f0 1266 }
853b8397 1267
34f253f0 1268 r = strv_consume(sv, word);
853b8397
LP		 1269 if (r < 0)
1270 return log_oom();
7f110ff9 1271 }
57d42a5f 1272}
15ae422b 1273
1e35c5ab
RP		 1274int config_parse_warn_compat(
1275 const char *unit,
1276 const char *filename,
1277 unsigned line,
1278 const char *section,
1279 unsigned section_line,
1280 const char *lvalue,
1281 int ltype,
1282 const char *rvalue,
1283 void *data,
1284 void *userdata) {
7ef7e15b 1285
1e35c5ab
RP		 1286 Disabled reason = ltype;
1287
79893116 1288 switch (reason) {
7ef7e15b 1289
1e35c5ab
RP		 1290 case DISABLED_CONFIGURATION:
1291 log_syntax(unit, LOG_DEBUG, filename, line, 0,
1292 "Support for option %s= has been disabled at compile time and it is ignored", lvalue);
1293 break;
7ef7e15b 1294
1e35c5ab
RP		 1295 case DISABLED_LEGACY:
1296 log_syntax(unit, LOG_INFO, filename, line, 0,
1297 "Support for option %s= has been removed and it is ignored", lvalue);
1298 break;
7ef7e15b 1299
1e35c5ab
RP		 1300 case DISABLED_EXPERIMENTAL:
1301 log_syntax(unit, LOG_INFO, filename, line, 0,
1302 "Support for option %s= has not yet been enabled and it is ignored", lvalue);
1303 break;
7ef7e15b 1304 }
1e35c5ab
RP		 1305
1306 return 0;
1307}
1308
ca37242e
LP		 1309int config_parse_log_facility(
1310 const char *unit,
1311 const char *filename,
1312 unsigned line,
1313 const char *section,
1314 unsigned section_line,
1315 const char *lvalue,
1316 int ltype,
1317 const char *rvalue,
1318 void *data,
1319 void *userdata) {
213ba152 1320
213ba152
LP		 1321 int *o = data, x;
1322
1323 assert(filename);
1324 assert(lvalue);
1325 assert(rvalue);
1326 assert(data);
1327
1328 x = log_facility_unshifted_from_string(rvalue);
1329 if (x < 0) {
b98680b2 1330 log_syntax(unit, LOG_WARNING, filename, line, x, "Failed to parse log facility, ignoring: %s", rvalue);
213ba152
LP		 1331 return 0;
1332 }
1333
1334 *o = (x << 3) | LOG_PRI(*o);
1335
1336 return 0;
1337}
1338
ca37242e
LP		 1339int config_parse_log_level(
1340 const char *unit,
1341 const char *filename,
1342 unsigned line,
1343 const char *section,
1344 unsigned section_line,
1345 const char *lvalue,
1346 int ltype,
1347 const char *rvalue,
1348 void *data,
1349 void *userdata) {
213ba152 1350
213ba152
LP		 1351 int *o = data, x;
1352
1353 assert(filename);
1354 assert(lvalue);
1355 assert(rvalue);
1356 assert(data);
1357
1358 x = log_level_from_string(rvalue);
1359 if (x < 0) {
b98680b2 1360 log_syntax(unit, LOG_WARNING, filename, line, x, "Failed to parse log level, ignoring: %s", rvalue);
213ba152
LP		 1361 return 0;
1362 }
1363
d3070fbd
LP		 1364 if (*o < 0) /* if it wasn't initialized so far, assume zero facility */
1365 *o = x;
1366 else
1367 *o = (*o & LOG_FACMASK) | x;
1368
213ba152
LP		 1369 return 0;
1370}
f757855e
LP		 1371
1372int config_parse_signal(
1373 const char *unit,
1374 const char *filename,
1375 unsigned line,
1376 const char *section,
1377 unsigned section_line,
1378 const char *lvalue,
1379 int ltype,
1380 const char *rvalue,
1381 void *data,
1382 void *userdata) {
1383
1384 int *sig = data, r;
1385
1386 assert(filename);
1387 assert(lvalue);
1388 assert(rvalue);
1389 assert(sig);
1390
29a3db75 1391 r = signal_from_string(rvalue);
f757855e 1392 if (r <= 0) {
b98680b2 1393 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse signal name, ignoring: %s", rvalue);
f757855e
LP		 1394 return 0;
1395 }
1396
1397 *sig = r;
1398 return 0;
1399}
1400
1401int config_parse_personality(
1402 const char *unit,
1403 const char *filename,
1404 unsigned line,
1405 const char *section,
1406 unsigned section_line,
1407 const char *lvalue,
1408 int ltype,
1409 const char *rvalue,
1410 void *data,
1411 void *userdata) {
1412
1413 unsigned long *personality = data, p;
1414
1415 assert(filename);
1416 assert(lvalue);
1417 assert(rvalue);
1418 assert(personality);
1419
40fdd636
LP		 1420 if (isempty(rvalue))
1421 p = PERSONALITY_INVALID;
1422 else {
1423 p = personality_from_string(rvalue);
1424 if (p == PERSONALITY_INVALID) {
d96edb2c 1425 log_syntax(unit, LOG_WARNING, filename, line, 0, "Failed to parse personality, ignoring: %s", rvalue);
40fdd636
LP		 1426 return 0;
1427 }
f757855e
LP		 1428 }
1429
1430 *personality = p;
1431 return 0;
1432}
d31645ad
LP		 1433
1434int config_parse_ifname(
1435 const char *unit,
1436 const char *filename,
1437 unsigned line,
1438 const char *section,
1439 unsigned section_line,
1440 const char *lvalue,
1441 int ltype,
1442 const char *rvalue,
1443 void *data,
1444 void *userdata) {
1445
99534007 1446 char **s = ASSERT_PTR(data);
d31645ad
LP		 1447 int r;
1448
1449 assert(filename);
1450 assert(lvalue);
1451 assert(rvalue);
d31645ad
LP		 1452
1453 if (isempty(rvalue)) {
1454 *s = mfree(*s);
1455 return 0;
1456 }
1457
1458 if (!ifname_valid(rvalue)) {
d96edb2c 1459 log_syntax(unit, LOG_WARNING, filename, line, 0, "Interface name is not valid or too long, ignoring assignment: %s", rvalue);
d31645ad
LP		 1460 return 0;
1461 }
1462
1463 r = free_and_strdup(s, rvalue);
1464 if (r < 0)
1465 return log_oom();
1466
1467 return 0;
1468}
177d0b20 1469
a5053a15
YW		 1470int config_parse_ifnames(
1471 const char *unit,
1472 const char *filename,
1473 unsigned line,
1474 const char *section,
1475 unsigned section_line,
1476 const char *lvalue,
1477 int ltype,
1478 const char *rvalue,
1479 void *data,
1480 void *userdata) {
1481
1482 _cleanup_strv_free_ char **names = NULL;
99534007 1483 char ***s = ASSERT_PTR(data);
a5053a15
YW		 1484 int r;
1485
1486 assert(filename);
1487 assert(lvalue);
1488 assert(rvalue);
a5053a15
YW		 1489
1490 if (isempty(rvalue)) {
1491 *s = strv_free(*s);
1492 return 0;
1493 }
1494
d96edb2c 1495 for (const char *p = rvalue;;) {
a5053a15
YW		 1496 _cleanup_free_ char *word = NULL;
1497
1498 r = extract_first_word(&p, &word, NULL, 0);
d96edb2c
YW		 1499 if (r == -ENOMEM)
1500 return log_oom();
a5053a15 1501 if (r < 0) {
d96edb2c 1502 log_syntax(unit, LOG_WARNING, filename, line, r,
a5053a15
YW		 1503 "Failed to extract interface name, ignoring assignment: %s",
1504 rvalue);
1505 return 0;
1506 }
1507 if (r == 0)
1508 break;
1509
1510 if (!ifname_valid_full(word, ltype)) {
d96edb2c 1511 log_syntax(unit, LOG_WARNING, filename, line, 0,
a5053a15
YW		 1512 "Interface name is not valid or too long, ignoring assignment: %s",
1513 word);
1514 continue;
1515 }
1516
1517 r = strv_consume(&names, TAKE_PTR(word));
1518 if (r < 0)
1519 return log_oom();
1520 }
1521
1522 r = strv_extend_strv(s, names, true);
1523 if (r < 0)
1524 return log_oom();
1525
1526 return 0;
1527}
1528
177d0b20
SS		 1529int config_parse_ip_port(
1530 const char *unit,
1531 const char *filename,
1532 unsigned line,
1533 const char *section,
1534 unsigned section_line,
1535 const char *lvalue,
1536 int ltype,
1537 const char *rvalue,
1538 void *data,
1539 void *userdata) {
1540
99534007 1541 uint16_t *s = ASSERT_PTR(data);
177d0b20
SS		 1542 uint16_t port;
1543 int r;
1544
1545 assert(filename);
1546 assert(lvalue);
1547 assert(rvalue);
177d0b20
SS		 1548
1549 if (isempty(rvalue)) {
1550 *s = 0;
1551 return 0;
1552 }
1553
1554 r = parse_ip_port(rvalue, &port);
1555 if (r < 0) {
d96edb2c 1556 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse port '%s'.", rvalue);
177d0b20
SS		 1557 return 0;
1558 }
1559
1560 *s = port;
1561
1562 return 0;
1563}
9ecdba8c 1564
79138a38
LP		 1565int config_parse_mtu(
1566 const char *unit,
1567 const char *filename,
1568 unsigned line,
1569 const char *section,
1570 unsigned section_line,
1571 const char *lvalue,
1572 int ltype,
1573 const char *rvalue,
1574 void *data,
1575 void *userdata) {
1576
99534007 1577 uint32_t *mtu = ASSERT_PTR(data);
79138a38
LP		 1578 int r;
1579
1580 assert(rvalue);
79138a38
LP		 1581
1582 r = parse_mtu(ltype, rvalue, mtu);
1583 if (r == -ERANGE) {
d96edb2c 1584 log_syntax(unit, LOG_WARNING, filename, line, r,
79138a38
LP		 1585 "Maximum transfer unit (MTU) value out of range. Permitted range is %" PRIu32 "…%" PRIu32 ", ignoring: %s",
1586 (uint32_t) (ltype == AF_INET6 ? IPV6_MIN_MTU : IPV4_MIN_MTU), (uint32_t) UINT32_MAX,
1587 rvalue);
1588 return 0;
1589 }
1590 if (r < 0) {
d96edb2c 1591 log_syntax(unit, LOG_WARNING, filename, line, r,
79138a38
LP		 1592 "Failed to parse MTU value '%s', ignoring: %m", rvalue);
1593 return 0;
1594 }
1595
1596 return 0;
1597}
4f424df7
LP		 1598
1599int config_parse_rlimit(
1600 const char *unit,
1601 const char *filename,
1602 unsigned line,
1603 const char *section,
1604 unsigned section_line,
1605 const char *lvalue,
1606 int ltype,
1607 const char *rvalue,
1608 void *data,
1609 void *userdata) {
1610
1611 struct rlimit **rl = data, d = {};
1612 int r;
1613
1614 assert(rvalue);
1615 assert(rl);
1616
1617 r = rlimit_parse(ltype, rvalue, &d);
1618 if (r == -EILSEQ) {
1619 log_syntax(unit, LOG_WARNING, filename, line, r, "Soft resource limit chosen higher than hard limit, ignoring: %s", rvalue);
1620 return 0;
1621 }
1622 if (r < 0) {
d96edb2c 1623 log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse resource value, ignoring: %s", rvalue);
4f424df7
LP		 1624 return 0;
1625 }
1626
1627 if (rl[ltype])
1628 *rl[ltype] = d;
1629 else {
1630 rl[ltype] = newdup(struct rlimit, &d, 1);
1631 if (!rl[ltype])
1632 return log_oom();
1633 }
1634
1635 return 0;
1636}
c07b23ca 1637
c2f781bc
YW		 1638int config_parse_permille(
1639 const char* unit,
1640 const char *filename,
1641 unsigned line,
1642 const char *section,
1643 unsigned section_line,
1644 const char *lvalue,
1645 int ltype,
1646 const char *rvalue,
1647 void *data,
1648 void *userdata) {
c07b23ca 1649
99534007 1650 unsigned *permille = ASSERT_PTR(data);
c07b23ca
MKB		 1651 int r;
1652
1653 assert(filename);
1654 assert(lvalue);
1655 assert(rvalue);
c07b23ca
MKB		 1656
1657 r = parse_permille(rvalue);
1658 if (r < 0) {
d96edb2c 1659 log_syntax(unit, LOG_WARNING, filename, line, r,
c07b23ca
MKB		 1660 "Failed to parse permille value, ignoring: %s", rvalue);
1661 return 0;
1662 }
1663
1664 *permille = (unsigned) r;
1665
1666 return 0;
1667}
4df4df5b 1668
c2f781bc
YW		 1669int config_parse_vlanprotocol(
1670 const char* unit,
1671 const char *filename,
1672 unsigned line,
1673 const char *section,
1674 unsigned section_line,
1675 const char *lvalue,
1676 int ltype,
1677 const char *rvalue,
1678 void *data,
1679 void *userdata) {
1680
4df4df5b 1681 int *vlan_protocol = data;
c2f781bc 1682
4df4df5b
RF		 1683 assert(filename);
1684 assert(lvalue);
1685
1686 if (isempty(rvalue)) {
1687 *vlan_protocol = -1;
1688 return 0;
1689 }
1690
1691 if (STR_IN_SET(rvalue, "802.1ad", "802.1AD"))
1692 *vlan_protocol = ETH_P_8021AD;
1693 else if (STR_IN_SET(rvalue, "802.1q", "802.1Q"))
1694 *vlan_protocol = ETH_P_8021Q;
1695 else {
d96edb2c 1696 log_syntax(unit, LOG_WARNING, filename, line, 0,
4df4df5b
RF		 1697 "Failed to parse VLAN protocol value, ignoring: %s", rvalue);
1698 return 0;
1699 }
1700
1701 return 0;
1702}
9de5e321 1703
99628f36
YW		 1704int config_parse_hw_addr(
1705 const char *unit,
1706 const char *filename,
1707 unsigned line,
1708 const char *section,
1709 unsigned section_line,
1710 const char *lvalue,
1711 int ltype,
1712 const char *rvalue,
1713 void *data,
1714 void *userdata) {
1715
99534007 1716 struct hw_addr_data a, *hwaddr = ASSERT_PTR(data);
99628f36
YW		 1717 int r;
1718
1719 assert(filename);
1720 assert(lvalue);
1721 assert(rvalue);
99628f36
YW		 1722
1723 if (isempty(rvalue)) {
1724 *hwaddr = HW_ADDR_NULL;
1725 return 0;
1726 }
1727
1728 r = parse_hw_addr_full(rvalue, ltype, &a);
1729 if (r < 0) {
1730 log_syntax(unit, LOG_WARNING, filename, line, r,
1731 "Not a valid hardware address, ignoring assignment: %s", rvalue);
1732 return 0;
1733 }
1734
1735 *hwaddr = a;
1736 return 0;
1737}
1738
1739int config_parse_hw_addrs(
1740 const char *unit,
1741 const char *filename,
1742 unsigned line,
1743 const char *section,
1744 unsigned section_line,
1745 const char *lvalue,
1746 int ltype,
1747 const char *rvalue,
1748 void *data,
1749 void *userdata) {
1750
99534007 1751 Set **hwaddrs = ASSERT_PTR(data);
99628f36
YW		 1752 int r;
1753
1754 assert(filename);
1755 assert(lvalue);
1756 assert(rvalue);
99628f36
YW		 1757
1758 if (isempty(rvalue)) {
1759 /* Empty assignment resets the list */
1760 *hwaddrs = set_free(*hwaddrs);
1761 return 0;
1762 }
1763
1764 for (const char *p = rvalue;;) {
1765 _cleanup_free_ char *word = NULL;
1766 _cleanup_free_ struct hw_addr_data *n = NULL;
1767
1768 r = extract_first_word(&p, &word, NULL, 0);
1769 if (r == 0)
1770 return 0;
1771 if (r == -ENOMEM)
1772 return log_oom();
1773 if (r < 0) {
1774 log_syntax(unit, LOG_WARNING, filename, line, r,
1775 "Invalid syntax, ignoring: %s", rvalue);
1776 return 0;
1777 }
1778
1779 n = new(struct hw_addr_data, 1);
1780 if (!n)
1781 return log_oom();
1782
1783 r = parse_hw_addr_full(word, ltype, n);
1784 if (r < 0) {
1785 log_syntax(unit, LOG_WARNING, filename, line, r,
1786 "Not a valid hardware address, ignoring: %s", word);
1787 continue;
1788 }
1789
1790 r = set_ensure_consume(hwaddrs, &hw_addr_hash_ops_free, TAKE_PTR(n));
1791 if (r < 0)
1792 return log_oom();
1793 }
1794}
1795
aa4f7653 1796int config_parse_ether_addr(
0ec2a7a1
YW		 1797 const char *unit,
1798 const char *filename,
1799 unsigned line,
1800 const char *section,
1801 unsigned section_line,
1802 const char *lvalue,
1803 int ltype,
1804 const char *rvalue,
1805 void *data,
1806 void *userdata) {
1807
1808 _cleanup_free_ struct ether_addr *n = NULL;
99534007 1809 struct ether_addr **hwaddr = ASSERT_PTR(data);
0ec2a7a1
YW		 1810 int r;
1811
1812 assert(filename);
1813 assert(lvalue);
1814 assert(rvalue);
0ec2a7a1
YW		 1815
1816 if (isempty(rvalue)) {
1817 *hwaddr = mfree(*hwaddr);
1818 return 0;
1819 }
1820
1821 n = new0(struct ether_addr, 1);
1822 if (!n)
1823 return log_oom();
1824
227e9ce2 1825 r = parse_ether_addr(rvalue, n);
0ec2a7a1
YW		 1826 if (r < 0) {
1827 log_syntax(unit, LOG_WARNING, filename, line, r,
1828 "Not a valid MAC address, ignoring assignment: %s", rvalue);
1829 return 0;
1830 }
1831
1832 free_and_replace(*hwaddr, n);
1833
1834 return 0;
1835}
1836
aa4f7653 1837int config_parse_ether_addrs(
0ec2a7a1
YW		 1838 const char *unit,
1839 const char *filename,
1840 unsigned line,
1841 const char *section,
1842 unsigned section_line,
1843 const char *lvalue,
1844 int ltype,
1845 const char *rvalue,
1846 void *data,
1847 void *userdata) {
1848
99534007 1849 Set **hwaddrs = ASSERT_PTR(data);
0ec2a7a1
YW		 1850 int r;
1851
1852 assert(filename);
1853 assert(lvalue);
1854 assert(rvalue);
0ec2a7a1
YW		 1855
1856 if (isempty(rvalue)) {
1857 /* Empty assignment resets the list */
c6df73ca 1858 *hwaddrs = set_free(*hwaddrs);
0ec2a7a1
YW		 1859 return 0;
1860 }
1861
1862 for (const char *p = rvalue;;) {
1863 _cleanup_free_ char *word = NULL;
1864 _cleanup_free_ struct ether_addr *n = NULL;
1865
1866 r = extract_first_word(&p, &word, NULL, 0);
1867 if (r == 0)
1868 return 0;
1869 if (r == -ENOMEM)
1870 return log_oom();
1871 if (r < 0) {
1872 log_syntax(unit, LOG_WARNING, filename, line, r,
1873 "Invalid syntax, ignoring: %s", rvalue);
1874 return 0;
1875 }
1876
1877 n = new(struct ether_addr, 1);
1878 if (!n)
1879 return log_oom();
1880
227e9ce2 1881 r = parse_ether_addr(word, n);
0ec2a7a1
YW		 1882 if (r < 0) {
1883 log_syntax(unit, LOG_WARNING, filename, line, r,
1884 "Not a valid MAC address, ignoring: %s", word);
1885 continue;
1886 }
1887
c6df73ca 1888 r = set_ensure_consume(hwaddrs, &ether_addr_hash_ops_free, TAKE_PTR(n));
0ec2a7a1
YW		 1889 if (r < 0)
1890 return log_oom();
0ec2a7a1
YW		 1891 }
1892}
1893
cf074772
YW		 1894int config_parse_in_addr_non_null(
1895 const char *unit,
1896 const char *filename,
1897 unsigned line,
1898 const char *section,
1899 unsigned section_line,
1900 const char *lvalue,
1901 int ltype,
1902 const char *rvalue,
1903 void *data,
1904 void *userdata) {
1905
1906 /* data must be a pointer to struct in_addr or in6_addr, and the type is determined by ltype. */
99534007
DT		 1907 struct in_addr *ipv4 = ASSERT_PTR(data);
1908 struct in6_addr *ipv6 = ASSERT_PTR(data);
cf074772
YW		 1909 union in_addr_union a;
1910 int r;
1911
1912 assert(filename);
1913 assert(lvalue);
1914 assert(rvalue);
cf074772
YW		 1915 assert(IN_SET(ltype, AF_INET, AF_INET6));
1916
1917 if (isempty(rvalue)) {
1918 if (ltype == AF_INET)
1919 *ipv4 = (struct in_addr) {};
1920 else
1921 *ipv6 = (struct in6_addr) {};
1922 return 0;
1923 }
1924
1925 r = in_addr_from_string(ltype, rvalue, &a);
1926 if (r < 0) {
1927 log_syntax(unit, LOG_WARNING, filename, line, r,
1928 "Failed to parse %s=, ignoring assignment: %s", lvalue, rvalue);
1929 return 0;
1930 }
1931
1932 if (!in_addr_is_set(ltype, &a)) {
1933 log_syntax(unit, LOG_WARNING, filename, line, 0,
1934 "%s= cannot be the ANY address, ignoring: %s", lvalue, rvalue);
1935 return 0;
1936 }
1937
1938 if (ltype == AF_INET)
1939 *ipv4 = a.in;
1940 else
1941 *ipv6 = a.in6;
1942 return 0;
1943}
1944
851cdffd
ZJS		 1945int config_parse_unsigned_bounded(
1946 const char *unit,
1947 const char *filename,
1948 unsigned line,
1949 const char *section,
1950 unsigned section_line,
1951 const char *name,
1952 const char *value,
1953 unsigned min,
1954 unsigned max,
1955 bool ignoring,
1956 unsigned *ret) {
1957
1958 int r;
1959
1960 assert(filename);
1961 assert(name);
1962 assert(value);
1963 assert(ret);
1964
1965 r = safe_atou_bounded(value, min, max, ret);
1966 if (r == -ERANGE)
1967 log_syntax(unit, LOG_WARNING, filename, line, r,
1968 "Invalid '%s=%s', allowed range is %u..%u%s.",
1969 name, value, min, max, ignoring ? ", ignoring" : "");
1970 else if (r < 0)
1971 log_syntax(unit, LOG_WARNING, filename, line, r,
1972 "Failed to parse '%s=%s'%s: %m",
1973 name, value, ignoring ? ", ignoring" : "");
1974
1975 if (r >= 0)
1976 return 1; /* Return 1 if something was set */
1977 else if (ignoring)
1978 return 0;
1979 else
1980 return r;
1981}
1982
9de5e321 1983DEFINE_CONFIG_PARSE(config_parse_percent, parse_percent, "Failed to parse percent value");
0a9f9344 1984DEFINE_CONFIG_PARSE(config_parse_permyriad, parse_permyriad, "Failed to parse permyriad value");
4ee8176f 1985DEFINE_CONFIG_PARSE_PTR(config_parse_sec_fix_0, parse_sec_fix_0, usec_t, "Failed to parse time value");
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