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74b2466e LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2014 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
0dae31d4 ZJS |
22 | #include <math.h> |
23 | ||
b5efdb8a | 24 | #include "alloc-util.h" |
4ad7f276 | 25 | #include "dns-domain.h" |
7263f724 | 26 | #include "dns-type.h" |
e4e73a63 | 27 | #include "hexdecoct.h" |
07630cea | 28 | #include "resolved-dns-packet.h" |
e4e73a63 | 29 | #include "resolved-dns-rr.h" |
8730bccf | 30 | #include "string-table.h" |
07630cea LP |
31 | #include "string-util.h" |
32 | #include "strv.h" | |
74b2466e | 33 | |
faa133f3 LP |
34 | DnsResourceKey* dns_resource_key_new(uint16_t class, uint16_t type, const char *name) { |
35 | DnsResourceKey *k; | |
36 | size_t l; | |
74b2466e | 37 | |
faa133f3 LP |
38 | assert(name); |
39 | ||
40 | l = strlen(name); | |
41 | k = malloc0(sizeof(DnsResourceKey) + l + 1); | |
42 | if (!k) | |
43 | return NULL; | |
44 | ||
45 | k->n_ref = 1; | |
46 | k->class = class; | |
47 | k->type = type; | |
48 | ||
49 | strcpy((char*) k + sizeof(DnsResourceKey), name); | |
50 | ||
51 | return k; | |
52 | } | |
53 | ||
36d9205d | 54 | DnsResourceKey* dns_resource_key_new_redirect(const DnsResourceKey *key, const DnsResourceRecord *cname) { |
58db254a LP |
55 | int r; |
56 | ||
36d9205d TG |
57 | assert(key); |
58 | assert(cname); | |
59 | ||
58db254a LP |
60 | assert(IN_SET(cname->key->type, DNS_TYPE_CNAME, DNS_TYPE_DNAME)); |
61 | ||
62 | if (cname->key->type == DNS_TYPE_CNAME) | |
63 | return dns_resource_key_new(key->class, key->type, cname->cname.name); | |
64 | else { | |
65 | DnsResourceKey *k; | |
66 | char *destination = NULL; | |
67 | ||
68 | r = dns_name_change_suffix(DNS_RESOURCE_KEY_NAME(key), DNS_RESOURCE_KEY_NAME(cname->key), cname->dname.name, &destination); | |
69 | if (r < 0) | |
70 | return NULL; | |
71 | if (r == 0) | |
72 | return dns_resource_key_ref((DnsResourceKey*) key); | |
73 | ||
74 | k = dns_resource_key_new_consume(key->class, key->type, destination); | |
75 | if (!k) { | |
76 | free(destination); | |
77 | return NULL; | |
78 | } | |
79 | ||
80 | return k; | |
81 | } | |
36d9205d TG |
82 | } |
83 | ||
801ad6a6 LP |
84 | int dns_resource_key_new_append_suffix(DnsResourceKey **ret, DnsResourceKey *key, char *name) { |
85 | DnsResourceKey *new_key; | |
86 | char *joined; | |
87 | int r; | |
88 | ||
89 | assert(ret); | |
90 | assert(key); | |
91 | assert(name); | |
92 | ||
dc477e73 | 93 | if (dns_name_is_root(name)) { |
801ad6a6 LP |
94 | *ret = dns_resource_key_ref(key); |
95 | return 0; | |
96 | } | |
97 | ||
98 | r = dns_name_concat(DNS_RESOURCE_KEY_NAME(key), name, &joined); | |
99 | if (r < 0) | |
100 | return r; | |
101 | ||
102 | new_key = dns_resource_key_new_consume(key->class, key->type, joined); | |
103 | if (!new_key) { | |
104 | free(joined); | |
105 | return -ENOMEM; | |
106 | } | |
107 | ||
108 | *ret = new_key; | |
109 | return 0; | |
110 | } | |
111 | ||
faa133f3 LP |
112 | DnsResourceKey* dns_resource_key_new_consume(uint16_t class, uint16_t type, char *name) { |
113 | DnsResourceKey *k; | |
114 | ||
115 | assert(name); | |
116 | ||
117 | k = new0(DnsResourceKey, 1); | |
118 | if (!k) | |
119 | return NULL; | |
120 | ||
121 | k->n_ref = 1; | |
122 | k->class = class; | |
123 | k->type = type; | |
124 | k->_name = name; | |
125 | ||
126 | return k; | |
127 | } | |
128 | ||
129 | DnsResourceKey* dns_resource_key_ref(DnsResourceKey *k) { | |
130 | ||
131 | if (!k) | |
132 | return NULL; | |
133 | ||
1b4f6e79 LP |
134 | /* Static/const keys created with DNS_RESOURCE_KEY_CONST will |
135 | * set this to -1, they should not be reffed/unreffed */ | |
136 | assert(k->n_ref != (unsigned) -1); | |
137 | ||
faa133f3 LP |
138 | assert(k->n_ref > 0); |
139 | k->n_ref++; | |
140 | ||
141 | return k; | |
142 | } | |
143 | ||
144 | DnsResourceKey* dns_resource_key_unref(DnsResourceKey *k) { | |
145 | if (!k) | |
146 | return NULL; | |
147 | ||
1b4f6e79 | 148 | assert(k->n_ref != (unsigned) -1); |
faa133f3 LP |
149 | assert(k->n_ref > 0); |
150 | ||
151 | if (k->n_ref == 1) { | |
152 | free(k->_name); | |
153 | free(k); | |
154 | } else | |
155 | k->n_ref--; | |
156 | ||
157 | return NULL; | |
158 | } | |
159 | ||
28b9b764 LP |
160 | bool dns_resource_key_is_address(const DnsResourceKey *key) { |
161 | assert(key); | |
162 | ||
163 | /* Check if this is an A or AAAA resource key */ | |
164 | ||
165 | return key->class == DNS_CLASS_IN && IN_SET(key->type, DNS_TYPE_A, DNS_TYPE_AAAA); | |
166 | } | |
167 | ||
faa133f3 LP |
168 | int dns_resource_key_equal(const DnsResourceKey *a, const DnsResourceKey *b) { |
169 | int r; | |
170 | ||
4d247a6c LP |
171 | if (a == b) |
172 | return 1; | |
173 | ||
faa133f3 LP |
174 | r = dns_name_equal(DNS_RESOURCE_KEY_NAME(a), DNS_RESOURCE_KEY_NAME(b)); |
175 | if (r <= 0) | |
176 | return r; | |
177 | ||
178 | if (a->class != b->class) | |
179 | return 0; | |
180 | ||
181 | if (a->type != b->type) | |
182 | return 0; | |
183 | ||
184 | return 1; | |
185 | } | |
186 | ||
801ad6a6 LP |
187 | int dns_resource_key_match_rr(const DnsResourceKey *key, const DnsResourceRecord *rr, const char *search_domain) { |
188 | int r; | |
189 | ||
faa133f3 LP |
190 | assert(key); |
191 | assert(rr); | |
192 | ||
4d247a6c LP |
193 | if (key == rr->key) |
194 | return 1; | |
195 | ||
801ad6a6 LP |
196 | /* Checks if an rr matches the specified key. If a search |
197 | * domain is specified, it will also be checked if the key | |
198 | * with the search domain suffixed might match the RR. */ | |
199 | ||
faa133f3 LP |
200 | if (rr->key->class != key->class && key->class != DNS_CLASS_ANY) |
201 | return 0; | |
202 | ||
203 | if (rr->key->type != key->type && key->type != DNS_TYPE_ANY) | |
204 | return 0; | |
205 | ||
801ad6a6 LP |
206 | r = dns_name_equal(DNS_RESOURCE_KEY_NAME(rr->key), DNS_RESOURCE_KEY_NAME(key)); |
207 | if (r != 0) | |
208 | return r; | |
209 | ||
210 | if (search_domain) { | |
211 | _cleanup_free_ char *joined = NULL; | |
212 | ||
213 | r = dns_name_concat(DNS_RESOURCE_KEY_NAME(key), search_domain, &joined); | |
214 | if (r < 0) | |
215 | return r; | |
216 | ||
217 | return dns_name_equal(DNS_RESOURCE_KEY_NAME(rr->key), joined); | |
218 | } | |
219 | ||
220 | return 0; | |
faa133f3 LP |
221 | } |
222 | ||
801ad6a6 LP |
223 | int dns_resource_key_match_cname(const DnsResourceKey *key, const DnsResourceRecord *rr, const char *search_domain) { |
224 | int r; | |
225 | ||
faa133f3 LP |
226 | assert(key); |
227 | assert(rr); | |
228 | ||
229 | if (rr->key->class != key->class && key->class != DNS_CLASS_ANY) | |
230 | return 0; | |
231 | ||
58db254a | 232 | if (rr->key->type == DNS_TYPE_CNAME) |
801ad6a6 | 233 | r = dns_name_equal(DNS_RESOURCE_KEY_NAME(key), DNS_RESOURCE_KEY_NAME(rr->key)); |
58db254a | 234 | else if (rr->key->type == DNS_TYPE_DNAME) |
801ad6a6 | 235 | r = dns_name_endswith(DNS_RESOURCE_KEY_NAME(key), DNS_RESOURCE_KEY_NAME(rr->key)); |
58db254a | 236 | else |
faa133f3 | 237 | return 0; |
801ad6a6 LP |
238 | |
239 | if (r != 0) | |
240 | return r; | |
241 | ||
242 | if (search_domain) { | |
243 | _cleanup_free_ char *joined = NULL; | |
244 | ||
245 | r = dns_name_concat(DNS_RESOURCE_KEY_NAME(key), search_domain, &joined); | |
246 | if (r < 0) | |
247 | return r; | |
248 | ||
249 | if (rr->key->type == DNS_TYPE_CNAME) | |
250 | return dns_name_equal(joined, DNS_RESOURCE_KEY_NAME(rr->key)); | |
251 | else if (rr->key->type == DNS_TYPE_DNAME) | |
252 | return dns_name_endswith(joined, DNS_RESOURCE_KEY_NAME(rr->key)); | |
253 | } | |
254 | ||
255 | return 0; | |
547973de LP |
256 | } |
257 | ||
258 | int dns_resource_key_match_soa(const DnsResourceKey *key, const DnsResourceKey *soa) { | |
259 | assert(soa); | |
260 | assert(key); | |
261 | ||
262 | /* Checks whether 'soa' is a SOA record for the specified key. */ | |
263 | ||
264 | if (soa->class != DNS_CLASS_IN) | |
265 | return 0; | |
801ad6a6 | 266 | |
547973de LP |
267 | if (soa->type != DNS_TYPE_SOA) |
268 | return 0; | |
269 | ||
270 | if (!dns_name_endswith(DNS_RESOURCE_KEY_NAME(key), DNS_RESOURCE_KEY_NAME(soa))) | |
271 | return 0; | |
272 | ||
273 | return 1; | |
74b2466e LP |
274 | } |
275 | ||
b826ab58 | 276 | static void dns_resource_key_hash_func(const void *i, struct siphash *state) { |
322345fd | 277 | const DnsResourceKey *k = i; |
322345fd | 278 | |
b826ab58 | 279 | assert(k); |
322345fd | 280 | |
b826ab58 TG |
281 | dns_name_hash_func(DNS_RESOURCE_KEY_NAME(k), state); |
282 | siphash24_compress(&k->class, sizeof(k->class), state); | |
283 | siphash24_compress(&k->type, sizeof(k->type), state); | |
322345fd LP |
284 | } |
285 | ||
d5099efc | 286 | static int dns_resource_key_compare_func(const void *a, const void *b) { |
322345fd LP |
287 | const DnsResourceKey *x = a, *y = b; |
288 | int ret; | |
289 | ||
faa133f3 | 290 | ret = dns_name_compare_func(DNS_RESOURCE_KEY_NAME(x), DNS_RESOURCE_KEY_NAME(y)); |
322345fd LP |
291 | if (ret != 0) |
292 | return ret; | |
293 | ||
294 | if (x->type < y->type) | |
295 | return -1; | |
296 | if (x->type > y->type) | |
297 | return 1; | |
298 | ||
299 | if (x->class < y->class) | |
300 | return -1; | |
301 | if (x->class > y->class) | |
302 | return 1; | |
303 | ||
304 | return 0; | |
305 | } | |
306 | ||
d5099efc MS |
307 | const struct hash_ops dns_resource_key_hash_ops = { |
308 | .hash = dns_resource_key_hash_func, | |
309 | .compare = dns_resource_key_compare_func | |
310 | }; | |
311 | ||
2d4c5cbc | 312 | int dns_resource_key_to_string(const DnsResourceKey *key, char **ret) { |
d23a27a9 | 313 | char cbuf[strlen("CLASS") + DECIMAL_STR_MAX(uint16_t)], tbuf[strlen("TYPE") + DECIMAL_STR_MAX(uint16_t)]; |
2d4c5cbc LP |
314 | const char *c, *t; |
315 | char *s; | |
316 | ||
317 | c = dns_class_to_string(key->class); | |
318 | if (!c) { | |
d23a27a9 | 319 | sprintf(cbuf, "CLASS%u", key->class); |
2d4c5cbc LP |
320 | c = cbuf; |
321 | } | |
322 | ||
323 | t = dns_type_to_string(key->type); | |
324 | if (!t){ | |
d23a27a9 | 325 | sprintf(tbuf, "TYPE%u", key->type); |
2d4c5cbc LP |
326 | t = tbuf; |
327 | } | |
328 | ||
c52a97b8 | 329 | if (asprintf(&s, "%s. %s %-5s", DNS_RESOURCE_KEY_NAME(key), c, t) < 0) |
2d4c5cbc LP |
330 | return -ENOMEM; |
331 | ||
332 | *ret = s; | |
333 | return 0; | |
334 | } | |
335 | ||
faa133f3 | 336 | DnsResourceRecord* dns_resource_record_new(DnsResourceKey *key) { |
74b2466e LP |
337 | DnsResourceRecord *rr; |
338 | ||
339 | rr = new0(DnsResourceRecord, 1); | |
340 | if (!rr) | |
341 | return NULL; | |
342 | ||
343 | rr->n_ref = 1; | |
faa133f3 LP |
344 | rr->key = dns_resource_key_ref(key); |
345 | ||
74b2466e LP |
346 | return rr; |
347 | } | |
348 | ||
8bf52d3d LP |
349 | DnsResourceRecord* dns_resource_record_new_full(uint16_t class, uint16_t type, const char *name) { |
350 | _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL; | |
351 | ||
352 | key = dns_resource_key_new(class, type, name); | |
353 | if (!key) | |
354 | return NULL; | |
355 | ||
356 | return dns_resource_record_new(key); | |
357 | } | |
358 | ||
74b2466e LP |
359 | DnsResourceRecord* dns_resource_record_ref(DnsResourceRecord *rr) { |
360 | if (!rr) | |
361 | return NULL; | |
362 | ||
363 | assert(rr->n_ref > 0); | |
364 | rr->n_ref++; | |
365 | ||
366 | return rr; | |
367 | } | |
368 | ||
369 | DnsResourceRecord* dns_resource_record_unref(DnsResourceRecord *rr) { | |
370 | if (!rr) | |
371 | return NULL; | |
372 | ||
373 | assert(rr->n_ref > 0); | |
374 | ||
375 | if (rr->n_ref > 1) { | |
376 | rr->n_ref--; | |
377 | return NULL; | |
378 | } | |
379 | ||
faa133f3 | 380 | if (rr->key) { |
9de3e329 | 381 | switch(rr->key->type) { |
9c92ce6d LP |
382 | |
383 | case DNS_TYPE_SRV: | |
384 | free(rr->srv.name); | |
385 | break; | |
386 | ||
9de3e329 ZJS |
387 | case DNS_TYPE_PTR: |
388 | case DNS_TYPE_NS: | |
389 | case DNS_TYPE_CNAME: | |
8ac4e9e1 | 390 | case DNS_TYPE_DNAME: |
faa133f3 | 391 | free(rr->ptr.name); |
9de3e329 | 392 | break; |
9c92ce6d | 393 | |
9de3e329 | 394 | case DNS_TYPE_HINFO: |
faa133f3 LP |
395 | free(rr->hinfo.cpu); |
396 | free(rr->hinfo.os); | |
9de3e329 | 397 | break; |
9c92ce6d | 398 | |
9de3e329 | 399 | case DNS_TYPE_TXT: |
9c92ce6d | 400 | case DNS_TYPE_SPF: |
2001c805 | 401 | dns_txt_item_free_all(rr->txt.items); |
9de3e329 | 402 | break; |
9c92ce6d | 403 | |
9de3e329 | 404 | case DNS_TYPE_SOA: |
7e8e0422 LP |
405 | free(rr->soa.mname); |
406 | free(rr->soa.rname); | |
9de3e329 | 407 | break; |
9c92ce6d | 408 | |
9de3e329 | 409 | case DNS_TYPE_MX: |
946c7094 | 410 | free(rr->mx.exchange); |
9de3e329 | 411 | break; |
9c92ce6d | 412 | |
abf126a3 TG |
413 | case DNS_TYPE_DS: |
414 | free(rr->ds.digest); | |
415 | break; | |
416 | ||
42cc2eeb | 417 | case DNS_TYPE_SSHFP: |
549c1a25 | 418 | free(rr->sshfp.fingerprint); |
42cc2eeb LP |
419 | break; |
420 | ||
8db0d2f5 ZJS |
421 | case DNS_TYPE_DNSKEY: |
422 | free(rr->dnskey.key); | |
423 | break; | |
424 | ||
151226ab ZJS |
425 | case DNS_TYPE_RRSIG: |
426 | free(rr->rrsig.signer); | |
427 | free(rr->rrsig.signature); | |
428 | break; | |
429 | ||
50f1e641 TG |
430 | case DNS_TYPE_NSEC: |
431 | free(rr->nsec.next_domain_name); | |
432 | bitmap_free(rr->nsec.types); | |
433 | break; | |
434 | ||
5d45a880 TG |
435 | case DNS_TYPE_NSEC3: |
436 | free(rr->nsec3.next_hashed_name); | |
437 | free(rr->nsec3.salt); | |
438 | bitmap_free(rr->nsec3.types); | |
439 | break; | |
440 | ||
0dae31d4 | 441 | case DNS_TYPE_LOC: |
9de3e329 ZJS |
442 | case DNS_TYPE_A: |
443 | case DNS_TYPE_AAAA: | |
444 | break; | |
9c92ce6d | 445 | |
9de3e329 | 446 | default: |
faa133f3 | 447 | free(rr->generic.data); |
9de3e329 | 448 | } |
322345fd | 449 | |
a8812dd7 | 450 | free(rr->wire_format); |
faa133f3 LP |
451 | dns_resource_key_unref(rr->key); |
452 | } | |
322345fd | 453 | |
faa133f3 | 454 | free(rr); |
322345fd | 455 | |
322345fd LP |
456 | return NULL; |
457 | } | |
458 | ||
623a4c97 LP |
459 | int dns_resource_record_new_reverse(DnsResourceRecord **ret, int family, const union in_addr_union *address, const char *hostname) { |
460 | _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL; | |
461 | _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL; | |
462 | _cleanup_free_ char *ptr = NULL; | |
463 | int r; | |
464 | ||
465 | assert(ret); | |
466 | assert(address); | |
467 | assert(hostname); | |
468 | ||
469 | r = dns_name_reverse(family, address, &ptr); | |
470 | if (r < 0) | |
471 | return r; | |
472 | ||
473 | key = dns_resource_key_new_consume(DNS_CLASS_IN, DNS_TYPE_PTR, ptr); | |
474 | if (!key) | |
475 | return -ENOMEM; | |
476 | ||
477 | ptr = NULL; | |
478 | ||
479 | rr = dns_resource_record_new(key); | |
480 | if (!rr) | |
481 | return -ENOMEM; | |
482 | ||
483 | rr->ptr.name = strdup(hostname); | |
484 | if (!rr->ptr.name) | |
485 | return -ENOMEM; | |
486 | ||
487 | *ret = rr; | |
488 | rr = NULL; | |
489 | ||
490 | return 0; | |
491 | } | |
492 | ||
78c6a153 LP |
493 | int dns_resource_record_new_address(DnsResourceRecord **ret, int family, const union in_addr_union *address, const char *name) { |
494 | DnsResourceRecord *rr; | |
495 | ||
496 | assert(ret); | |
497 | assert(address); | |
498 | assert(family); | |
499 | ||
500 | if (family == AF_INET) { | |
501 | ||
502 | rr = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_A, name); | |
503 | if (!rr) | |
504 | return -ENOMEM; | |
505 | ||
506 | rr->a.in_addr = address->in; | |
507 | ||
508 | } else if (family == AF_INET6) { | |
509 | ||
510 | rr = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_AAAA, name); | |
511 | if (!rr) | |
512 | return -ENOMEM; | |
513 | ||
514 | rr->aaaa.in6_addr = address->in6; | |
515 | } else | |
516 | return -EAFNOSUPPORT; | |
517 | ||
518 | *ret = rr; | |
519 | ||
520 | return 0; | |
521 | } | |
522 | ||
322345fd LP |
523 | int dns_resource_record_equal(const DnsResourceRecord *a, const DnsResourceRecord *b) { |
524 | int r; | |
525 | ||
526 | assert(a); | |
527 | assert(b); | |
528 | ||
4d247a6c LP |
529 | if (a == b) |
530 | return 1; | |
531 | ||
faa133f3 | 532 | r = dns_resource_key_equal(a->key, b->key); |
322345fd LP |
533 | if (r <= 0) |
534 | return r; | |
535 | ||
fd0b4602 LP |
536 | if (a->unparseable != b->unparseable) |
537 | return 0; | |
538 | ||
539 | switch (a->unparseable ? _DNS_TYPE_INVALID : a->key->type) { | |
2d4c5cbc | 540 | |
9c92ce6d LP |
541 | case DNS_TYPE_SRV: |
542 | r = dns_name_equal(a->srv.name, b->srv.name); | |
543 | if (r <= 0) | |
544 | return r; | |
545 | ||
546 | return a->srv.priority == b->srv.priority && | |
547 | a->srv.weight == b->srv.weight && | |
548 | a->srv.port == b->srv.port; | |
549 | ||
2d4c5cbc LP |
550 | case DNS_TYPE_PTR: |
551 | case DNS_TYPE_NS: | |
552 | case DNS_TYPE_CNAME: | |
8ac4e9e1 | 553 | case DNS_TYPE_DNAME: |
322345fd | 554 | return dns_name_equal(a->ptr.name, b->ptr.name); |
2d4c5cbc LP |
555 | |
556 | case DNS_TYPE_HINFO: | |
557 | return strcaseeq(a->hinfo.cpu, b->hinfo.cpu) && | |
558 | strcaseeq(a->hinfo.os, b->hinfo.os); | |
559 | ||
9de3e329 | 560 | case DNS_TYPE_SPF: /* exactly the same as TXT */ |
0f84a72e | 561 | case DNS_TYPE_TXT: |
2001c805 | 562 | return dns_txt_item_equal(a->txt.items, b->txt.items); |
2e276efc | 563 | |
2d4c5cbc | 564 | case DNS_TYPE_A: |
322345fd | 565 | return memcmp(&a->a.in_addr, &b->a.in_addr, sizeof(struct in_addr)) == 0; |
2d4c5cbc LP |
566 | |
567 | case DNS_TYPE_AAAA: | |
322345fd | 568 | return memcmp(&a->aaaa.in6_addr, &b->aaaa.in6_addr, sizeof(struct in6_addr)) == 0; |
2d4c5cbc LP |
569 | |
570 | case DNS_TYPE_SOA: | |
7e8e0422 LP |
571 | r = dns_name_equal(a->soa.mname, b->soa.mname); |
572 | if (r <= 0) | |
573 | return r; | |
574 | r = dns_name_equal(a->soa.rname, b->soa.rname); | |
575 | if (r <= 0) | |
576 | return r; | |
577 | ||
578 | return a->soa.serial == b->soa.serial && | |
579 | a->soa.refresh == b->soa.refresh && | |
580 | a->soa.retry == b->soa.retry && | |
581 | a->soa.expire == b->soa.expire && | |
582 | a->soa.minimum == b->soa.minimum; | |
9c92ce6d | 583 | |
946c7094 ZJS |
584 | case DNS_TYPE_MX: |
585 | if (a->mx.priority != b->mx.priority) | |
586 | return 0; | |
587 | ||
588 | return dns_name_equal(a->mx.exchange, b->mx.exchange); | |
589 | ||
0dae31d4 ZJS |
590 | case DNS_TYPE_LOC: |
591 | assert(a->loc.version == b->loc.version); | |
592 | ||
593 | return a->loc.size == b->loc.size && | |
594 | a->loc.horiz_pre == b->loc.horiz_pre && | |
595 | a->loc.vert_pre == b->loc.vert_pre && | |
596 | a->loc.latitude == b->loc.latitude && | |
597 | a->loc.longitude == b->loc.longitude && | |
598 | a->loc.altitude == b->loc.altitude; | |
599 | ||
abf126a3 TG |
600 | case DNS_TYPE_DS: |
601 | return a->ds.key_tag == b->ds.key_tag && | |
602 | a->ds.algorithm == b->ds.algorithm && | |
603 | a->ds.digest_type == b->ds.digest_type && | |
604 | a->ds.digest_size == b->ds.digest_size && | |
605 | memcmp(a->ds.digest, b->ds.digest, a->ds.digest_size) == 0; | |
606 | ||
42cc2eeb LP |
607 | case DNS_TYPE_SSHFP: |
608 | return a->sshfp.algorithm == b->sshfp.algorithm && | |
609 | a->sshfp.fptype == b->sshfp.fptype && | |
549c1a25 TG |
610 | a->sshfp.fingerprint_size == b->sshfp.fingerprint_size && |
611 | memcmp(a->sshfp.fingerprint, b->sshfp.fingerprint, a->sshfp.fingerprint_size) == 0; | |
42cc2eeb | 612 | |
8db0d2f5 | 613 | case DNS_TYPE_DNSKEY: |
f91dc240 LP |
614 | return a->dnskey.flags == b->dnskey.flags && |
615 | a->dnskey.protocol == b->dnskey.protocol && | |
8db0d2f5 ZJS |
616 | a->dnskey.algorithm == b->dnskey.algorithm && |
617 | a->dnskey.key_size == b->dnskey.key_size && | |
618 | memcmp(a->dnskey.key, b->dnskey.key, a->dnskey.key_size) == 0; | |
619 | ||
151226ab ZJS |
620 | case DNS_TYPE_RRSIG: |
621 | /* do the fast comparisons first */ | |
03664a62 LN |
622 | if (a->rrsig.type_covered != b->rrsig.type_covered || |
623 | a->rrsig.algorithm != b->rrsig.algorithm || | |
624 | a->rrsig.labels != b->rrsig.labels || | |
625 | a->rrsig.original_ttl != b->rrsig.original_ttl || | |
626 | a->rrsig.expiration != b->rrsig.expiration || | |
627 | a->rrsig.inception != b->rrsig.inception || | |
628 | a->rrsig.key_tag != b->rrsig.key_tag || | |
151226ab ZJS |
629 | a->rrsig.signature_size != b->rrsig.signature_size || |
630 | memcmp(a->rrsig.signature, b->rrsig.signature, a->rrsig.signature_size) != 0) | |
631 | return false; | |
632 | ||
633 | return dns_name_equal(a->rrsig.signer, b->rrsig.signer); | |
634 | ||
50f1e641 TG |
635 | case DNS_TYPE_NSEC: |
636 | return dns_name_equal(a->nsec.next_domain_name, b->nsec.next_domain_name) && | |
637 | bitmap_equal(a->nsec.types, b->nsec.types); | |
638 | ||
5d45a880 TG |
639 | case DNS_TYPE_NSEC3: |
640 | return a->nsec3.algorithm == b->nsec3.algorithm && | |
641 | a->nsec3.flags == b->nsec3.flags && | |
642 | a->nsec3.iterations == b->nsec3.iterations && | |
643 | a->nsec3.salt_size == b->nsec3.salt_size && | |
644 | memcmp(a->nsec3.salt, b->nsec3.salt, a->nsec3.salt_size) == 0 && | |
645 | memcmp(a->nsec3.next_hashed_name, b->nsec3.next_hashed_name, a->nsec3.next_hashed_name_size) == 0 && | |
646 | bitmap_equal(a->nsec3.types, b->nsec3.types); | |
647 | ||
2d4c5cbc | 648 | default: |
322345fd LP |
649 | return a->generic.size == b->generic.size && |
650 | memcmp(a->generic.data, b->generic.data, a->generic.size) == 0; | |
2d4c5cbc | 651 | } |
322345fd LP |
652 | } |
653 | ||
0dae31d4 ZJS |
654 | static char* format_location(uint32_t latitude, uint32_t longitude, uint32_t altitude, |
655 | uint8_t size, uint8_t horiz_pre, uint8_t vert_pre) { | |
656 | char *s; | |
657 | char NS = latitude >= 1U<<31 ? 'N' : 'S'; | |
658 | char EW = longitude >= 1U<<31 ? 'E' : 'W'; | |
659 | ||
660 | int lat = latitude >= 1U<<31 ? (int) (latitude - (1U<<31)) : (int) ((1U<<31) - latitude); | |
661 | int lon = longitude >= 1U<<31 ? (int) (longitude - (1U<<31)) : (int) ((1U<<31) - longitude); | |
662 | double alt = altitude >= 10000000u ? altitude - 10000000u : -(double)(10000000u - altitude); | |
663 | double siz = (size >> 4) * exp10((double) (size & 0xF)); | |
664 | double hor = (horiz_pre >> 4) * exp10((double) (horiz_pre & 0xF)); | |
665 | double ver = (vert_pre >> 4) * exp10((double) (vert_pre & 0xF)); | |
666 | ||
667 | if (asprintf(&s, "%d %d %.3f %c %d %d %.3f %c %.2fm %.2fm %.2fm %.2fm", | |
668 | (lat / 60000 / 60), | |
669 | (lat / 60000) % 60, | |
670 | (lat % 60000) / 1000., | |
671 | NS, | |
672 | (lon / 60000 / 60), | |
673 | (lon / 60000) % 60, | |
674 | (lon % 60000) / 1000., | |
675 | EW, | |
676 | alt / 100., | |
677 | siz / 100., | |
678 | hor / 100., | |
679 | ver / 100.) < 0) | |
680 | return NULL; | |
681 | ||
682 | return s; | |
683 | } | |
684 | ||
7c6423e1 TG |
685 | static int format_timestamp_dns(char *buf, size_t l, time_t sec) { |
686 | struct tm tm; | |
687 | ||
688 | assert(buf); | |
689 | assert(l > strlen("YYYYMMDDHHmmSS")); | |
690 | ||
691 | if (!gmtime_r(&sec, &tm)) | |
692 | return -EINVAL; | |
693 | ||
694 | if (strftime(buf, l, "%Y%m%d%H%M%S", &tm) <= 0) | |
695 | return -EINVAL; | |
696 | ||
697 | return 0; | |
698 | } | |
699 | ||
50f1e641 TG |
700 | static char *format_types(Bitmap *types) { |
701 | _cleanup_strv_free_ char **strv = NULL; | |
702 | _cleanup_free_ char *str = NULL; | |
cb57dd41 | 703 | Iterator i; |
50f1e641 TG |
704 | unsigned type; |
705 | int r; | |
706 | ||
cb57dd41 | 707 | BITMAP_FOREACH(type, types, i) { |
50f1e641 | 708 | if (dns_type_to_string(type)) { |
2c1fb4f7 | 709 | r = strv_extend(&strv, dns_type_to_string(type)); |
50f1e641 TG |
710 | if (r < 0) |
711 | return NULL; | |
712 | } else { | |
713 | char *t; | |
714 | ||
715 | r = asprintf(&t, "TYPE%u", type); | |
716 | if (r < 0) | |
717 | return NULL; | |
718 | ||
2c1fb4f7 | 719 | r = strv_consume(&strv, t); |
50f1e641 TG |
720 | if (r < 0) |
721 | return NULL; | |
722 | } | |
723 | } | |
724 | ||
725 | str = strv_join(strv, " "); | |
726 | if (!str) | |
727 | return NULL; | |
728 | ||
729 | return strjoin("( ", str, " )", NULL); | |
730 | } | |
731 | ||
2001c805 LP |
732 | static char *format_txt(DnsTxtItem *first) { |
733 | DnsTxtItem *i; | |
734 | size_t c = 1; | |
735 | char *p, *s; | |
736 | ||
737 | LIST_FOREACH(items, i, first) | |
738 | c += i->length * 4 + 3; | |
739 | ||
740 | p = s = new(char, c); | |
741 | if (!s) | |
742 | return NULL; | |
743 | ||
744 | LIST_FOREACH(items, i, first) { | |
745 | size_t j; | |
746 | ||
747 | if (i != first) | |
748 | *(p++) = ' '; | |
749 | ||
750 | *(p++) = '"'; | |
751 | ||
752 | for (j = 0; j < i->length; j++) { | |
753 | if (i->data[j] < ' ' || i->data[j] == '"' || i->data[j] >= 127) { | |
754 | *(p++) = '\\'; | |
755 | *(p++) = '0' + (i->data[j] / 100); | |
756 | *(p++) = '0' + ((i->data[j] / 10) % 10); | |
757 | *(p++) = '0' + (i->data[j] % 10); | |
758 | } else | |
759 | *(p++) = i->data[j]; | |
760 | } | |
761 | ||
762 | *(p++) = '"'; | |
763 | } | |
764 | ||
765 | *p = 0; | |
766 | return s; | |
767 | } | |
768 | ||
2d4c5cbc | 769 | int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret) { |
8db0d2f5 | 770 | _cleanup_free_ char *k = NULL, *t = NULL; |
2d4c5cbc LP |
771 | char *s; |
772 | int r; | |
322345fd | 773 | |
2d4c5cbc | 774 | assert(rr); |
322345fd | 775 | |
2d4c5cbc LP |
776 | r = dns_resource_key_to_string(rr->key, &k); |
777 | if (r < 0) | |
778 | return r; | |
322345fd | 779 | |
0dae31d4 | 780 | switch (rr->unparseable ? _DNS_TYPE_INVALID : rr->key->type) { |
322345fd | 781 | |
9c92ce6d LP |
782 | case DNS_TYPE_SRV: |
783 | r = asprintf(&s, "%s %u %u %u %s", | |
784 | k, | |
785 | rr->srv.priority, | |
786 | rr->srv.weight, | |
787 | rr->srv.port, | |
788 | strna(rr->srv.name)); | |
789 | if (r < 0) | |
790 | return -ENOMEM; | |
791 | break; | |
792 | ||
2d4c5cbc LP |
793 | case DNS_TYPE_PTR: |
794 | case DNS_TYPE_NS: | |
795 | case DNS_TYPE_CNAME: | |
8ac4e9e1 | 796 | case DNS_TYPE_DNAME: |
2d4c5cbc LP |
797 | s = strjoin(k, " ", rr->ptr.name, NULL); |
798 | if (!s) | |
799 | return -ENOMEM; | |
322345fd | 800 | |
2d4c5cbc | 801 | break; |
322345fd | 802 | |
2d4c5cbc LP |
803 | case DNS_TYPE_HINFO: |
804 | s = strjoin(k, " ", rr->hinfo.cpu, " ", rr->hinfo.os, NULL); | |
805 | if (!s) | |
806 | return -ENOMEM; | |
807 | break; | |
322345fd | 808 | |
9de3e329 | 809 | case DNS_TYPE_SPF: /* exactly the same as TXT */ |
8db0d2f5 | 810 | case DNS_TYPE_TXT: |
2001c805 | 811 | t = format_txt(rr->txt.items); |
2e276efc ZJS |
812 | if (!t) |
813 | return -ENOMEM; | |
814 | ||
815 | s = strjoin(k, " ", t, NULL); | |
816 | if (!s) | |
817 | return -ENOMEM; | |
2e276efc | 818 | break; |
2e276efc | 819 | |
2d4c5cbc LP |
820 | case DNS_TYPE_A: { |
821 | _cleanup_free_ char *x = NULL; | |
322345fd | 822 | |
2d4c5cbc LP |
823 | r = in_addr_to_string(AF_INET, (const union in_addr_union*) &rr->a.in_addr, &x); |
824 | if (r < 0) | |
825 | return r; | |
322345fd | 826 | |
2d4c5cbc LP |
827 | s = strjoin(k, " ", x, NULL); |
828 | if (!s) | |
829 | return -ENOMEM; | |
830 | break; | |
831 | } | |
322345fd | 832 | |
8db0d2f5 ZJS |
833 | case DNS_TYPE_AAAA: |
834 | r = in_addr_to_string(AF_INET6, (const union in_addr_union*) &rr->aaaa.in6_addr, &t); | |
2d4c5cbc LP |
835 | if (r < 0) |
836 | return r; | |
322345fd | 837 | |
8db0d2f5 | 838 | s = strjoin(k, " ", t, NULL); |
2d4c5cbc LP |
839 | if (!s) |
840 | return -ENOMEM; | |
841 | break; | |
322345fd | 842 | |
2d4c5cbc LP |
843 | case DNS_TYPE_SOA: |
844 | r = asprintf(&s, "%s %s %s %u %u %u %u %u", | |
845 | k, | |
846 | strna(rr->soa.mname), | |
847 | strna(rr->soa.rname), | |
848 | rr->soa.serial, | |
849 | rr->soa.refresh, | |
850 | rr->soa.retry, | |
851 | rr->soa.expire, | |
852 | rr->soa.minimum); | |
853 | if (r < 0) | |
854 | return -ENOMEM; | |
855 | break; | |
856 | ||
946c7094 ZJS |
857 | case DNS_TYPE_MX: |
858 | r = asprintf(&s, "%s %u %s", | |
859 | k, | |
860 | rr->mx.priority, | |
861 | rr->mx.exchange); | |
862 | if (r < 0) | |
863 | return -ENOMEM; | |
864 | break; | |
865 | ||
8db0d2f5 | 866 | case DNS_TYPE_LOC: |
0dae31d4 ZJS |
867 | assert(rr->loc.version == 0); |
868 | ||
8db0d2f5 ZJS |
869 | t = format_location(rr->loc.latitude, |
870 | rr->loc.longitude, | |
871 | rr->loc.altitude, | |
872 | rr->loc.size, | |
873 | rr->loc.horiz_pre, | |
874 | rr->loc.vert_pre); | |
875 | if (!t) | |
0dae31d4 ZJS |
876 | return -ENOMEM; |
877 | ||
8db0d2f5 | 878 | s = strjoin(k, " ", t, NULL); |
0dae31d4 ZJS |
879 | if (!s) |
880 | return -ENOMEM; | |
0dae31d4 | 881 | break; |
0dae31d4 | 882 | |
abf126a3 TG |
883 | case DNS_TYPE_DS: |
884 | t = hexmem(rr->ds.digest, rr->ds.digest_size); | |
885 | if (!t) | |
886 | return -ENOMEM; | |
887 | ||
888 | r = asprintf(&s, "%s %u %u %u %s", | |
889 | k, | |
890 | rr->ds.key_tag, | |
891 | rr->ds.algorithm, | |
892 | rr->ds.digest_type, | |
893 | t); | |
894 | if (r < 0) | |
895 | return -ENOMEM; | |
896 | break; | |
897 | ||
8db0d2f5 | 898 | case DNS_TYPE_SSHFP: |
549c1a25 | 899 | t = hexmem(rr->sshfp.fingerprint, rr->sshfp.fingerprint_size); |
8db0d2f5 | 900 | if (!t) |
42cc2eeb LP |
901 | return -ENOMEM; |
902 | ||
903 | r = asprintf(&s, "%s %u %u %s", | |
904 | k, | |
905 | rr->sshfp.algorithm, | |
906 | rr->sshfp.fptype, | |
8db0d2f5 | 907 | t); |
42cc2eeb LP |
908 | if (r < 0) |
909 | return -ENOMEM; | |
910 | break; | |
42cc2eeb | 911 | |
ff3d6560 ZJS |
912 | case DNS_TYPE_DNSKEY: { |
913 | const char *alg; | |
914 | ||
915 | alg = dnssec_algorithm_to_string(rr->dnskey.algorithm); | |
916 | ||
1bf968f3 | 917 | t = base64mem(rr->dnskey.key, rr->dnskey.key_size); |
8db0d2f5 ZJS |
918 | if (!t) |
919 | return -ENOMEM; | |
2d4c5cbc | 920 | |
f91dc240 | 921 | r = asprintf(&s, "%s %u %u %.*s%.*u %s", |
8db0d2f5 | 922 | k, |
f91dc240 LP |
923 | rr->dnskey.flags, |
924 | rr->dnskey.protocol, | |
ff3d6560 ZJS |
925 | alg ? -1 : 0, alg, |
926 | alg ? 0 : 1, alg ? 0u : (unsigned) rr->dnskey.algorithm, | |
8db0d2f5 ZJS |
927 | t); |
928 | if (r < 0) | |
2d4c5cbc | 929 | return -ENOMEM; |
8db0d2f5 | 930 | break; |
ff3d6560 | 931 | } |
2d4c5cbc | 932 | |
151226ab ZJS |
933 | case DNS_TYPE_RRSIG: { |
934 | const char *type, *alg; | |
7c6423e1 | 935 | char expiration[strlen("YYYYMMDDHHmmSS") + 1], inception[strlen("YYYYMMDDHHmmSS") + 1]; |
151226ab ZJS |
936 | |
937 | type = dns_type_to_string(rr->rrsig.type_covered); | |
938 | alg = dnssec_algorithm_to_string(rr->rrsig.algorithm); | |
939 | ||
1bf968f3 | 940 | t = base64mem(rr->rrsig.signature, rr->rrsig.signature_size); |
151226ab ZJS |
941 | if (!t) |
942 | return -ENOMEM; | |
943 | ||
7c6423e1 TG |
944 | r = format_timestamp_dns(expiration, sizeof(expiration), rr->rrsig.expiration); |
945 | if (r < 0) | |
946 | return r; | |
947 | ||
948 | r = format_timestamp_dns(inception, sizeof(inception), rr->rrsig.inception); | |
949 | if (r < 0) | |
950 | return r; | |
951 | ||
151226ab ZJS |
952 | /* TYPE?? follows |
953 | * http://tools.ietf.org/html/rfc3597#section-5 */ | |
954 | ||
7c6423e1 | 955 | r = asprintf(&s, "%s %s%.*u %.*s%.*u %u %u %s %s %u %s %s", |
151226ab ZJS |
956 | k, |
957 | type ?: "TYPE", | |
958 | type ? 0 : 1, type ? 0u : (unsigned) rr->rrsig.type_covered, | |
959 | alg ? -1 : 0, alg, | |
960 | alg ? 0 : 1, alg ? 0u : (unsigned) rr->rrsig.algorithm, | |
961 | rr->rrsig.labels, | |
962 | rr->rrsig.original_ttl, | |
7c6423e1 TG |
963 | expiration, |
964 | inception, | |
151226ab ZJS |
965 | rr->rrsig.key_tag, |
966 | rr->rrsig.signer, | |
967 | t); | |
968 | if (r < 0) | |
969 | return -ENOMEM; | |
970 | break; | |
971 | } | |
972 | ||
50f1e641 TG |
973 | case DNS_TYPE_NSEC: |
974 | t = format_types(rr->nsec.types); | |
975 | if (!t) | |
976 | return -ENOMEM; | |
977 | ||
978 | r = asprintf(&s, "%s %s %s", | |
979 | k, | |
980 | rr->nsec.next_domain_name, | |
981 | t); | |
982 | if (r < 0) | |
983 | return -ENOMEM; | |
984 | break; | |
985 | ||
5d45a880 TG |
986 | case DNS_TYPE_NSEC3: { |
987 | _cleanup_free_ char *salt = NULL, *hash = NULL; | |
988 | ||
f5430a3e | 989 | if (rr->nsec3.salt_size > 0) { |
5d45a880 TG |
990 | salt = hexmem(rr->nsec3.salt, rr->nsec3.salt_size); |
991 | if (!salt) | |
992 | return -ENOMEM; | |
993 | } | |
994 | ||
995 | hash = base32hexmem(rr->nsec3.next_hashed_name, rr->nsec3.next_hashed_name_size, false); | |
996 | if (!hash) | |
997 | return -ENOMEM; | |
998 | ||
999 | t = format_types(rr->nsec3.types); | |
1000 | if (!t) | |
1001 | return -ENOMEM; | |
1002 | ||
1003 | r = asprintf(&s, "%s %"PRIu8" %"PRIu8" %"PRIu16" %s %s %s", | |
1004 | k, | |
1005 | rr->nsec3.algorithm, | |
1006 | rr->nsec3.flags, | |
1007 | rr->nsec3.iterations, | |
f5430a3e | 1008 | rr->nsec3.salt_size > 0 ? salt : "-", |
5d45a880 TG |
1009 | hash, |
1010 | t); | |
1011 | if (r < 0) | |
1012 | return -ENOMEM; | |
1013 | ||
1014 | break; | |
1015 | } | |
1016 | ||
8db0d2f5 ZJS |
1017 | default: |
1018 | t = hexmem(rr->generic.data, rr->generic.size); | |
1019 | if (!t) | |
1020 | return -ENOMEM; | |
1021 | ||
f5430a3e | 1022 | r = asprintf(&s, "%s \\# %zu %s", k, rr->generic.size, t); |
d23a27a9 | 1023 | if (r < 0) |
2d4c5cbc LP |
1024 | return -ENOMEM; |
1025 | break; | |
8db0d2f5 | 1026 | } |
2d4c5cbc LP |
1027 | |
1028 | *ret = s; | |
1029 | return 0; | |
1030 | } | |
322345fd | 1031 | |
a8812dd7 LP |
1032 | int dns_resource_record_to_wire_format(DnsResourceRecord *rr, bool canonical) { |
1033 | ||
1034 | DnsPacket packet = { | |
1035 | .n_ref = 1, | |
1036 | .protocol = DNS_PROTOCOL_DNS, | |
1037 | .on_stack = true, | |
1038 | .refuse_compression = true, | |
1039 | .canonical_form = canonical, | |
1040 | }; | |
1041 | ||
1042 | size_t start, rds; | |
1043 | int r; | |
1044 | ||
1045 | assert(rr); | |
1046 | ||
1047 | /* Generates the RR in wire-format, optionally in the | |
1048 | * canonical form as discussed in the DNSSEC RFC 4034, Section | |
1049 | * 6.2. We allocate a throw-away DnsPacket object on the stack | |
1050 | * here, because we need some book-keeping for memory | |
1051 | * management, and can reuse the DnsPacket serializer, that | |
1052 | * can generate the canonical form, too, but also knows label | |
1053 | * compression and suchlike. */ | |
1054 | ||
1055 | if (rr->wire_format && rr->wire_format_canonical == canonical) | |
1056 | return 0; | |
1057 | ||
1058 | r = dns_packet_append_rr(&packet, rr, &start, &rds); | |
1059 | if (r < 0) | |
1060 | return r; | |
1061 | ||
1062 | assert(start == 0); | |
1063 | assert(packet._data); | |
1064 | ||
1065 | free(rr->wire_format); | |
1066 | rr->wire_format = packet._data; | |
1067 | rr->wire_format_size = packet.size; | |
1068 | rr->wire_format_rdata_offset = rds; | |
1069 | rr->wire_format_canonical = canonical; | |
1070 | ||
1071 | packet._data = NULL; | |
1072 | dns_packet_unref(&packet); | |
1073 | ||
1074 | return 0; | |
1075 | } | |
1076 | ||
2d4c5cbc | 1077 | const char *dns_class_to_string(uint16_t class) { |
322345fd | 1078 | |
2d4c5cbc | 1079 | switch (class) { |
322345fd | 1080 | |
2d4c5cbc LP |
1081 | case DNS_CLASS_IN: |
1082 | return "IN"; | |
322345fd | 1083 | |
2d4c5cbc LP |
1084 | case DNS_CLASS_ANY: |
1085 | return "ANY"; | |
1086 | } | |
322345fd | 1087 | |
2d4c5cbc LP |
1088 | return NULL; |
1089 | } | |
322345fd | 1090 | |
2d4c5cbc LP |
1091 | int dns_class_from_string(const char *s, uint16_t *class) { |
1092 | assert(s); | |
1093 | assert(class); | |
1094 | ||
1095 | if (strcaseeq(s, "IN")) | |
1096 | *class = DNS_CLASS_IN; | |
1097 | else if (strcaseeq(s, "ANY")) | |
816b4547 | 1098 | *class = DNS_CLASS_ANY; |
2d4c5cbc LP |
1099 | else |
1100 | return -EINVAL; | |
322345fd | 1101 | |
2d4c5cbc LP |
1102 | return 0; |
1103 | } | |
2001c805 LP |
1104 | |
1105 | DnsTxtItem *dns_txt_item_free_all(DnsTxtItem *i) { | |
1106 | DnsTxtItem *n; | |
1107 | ||
1108 | if (!i) | |
1109 | return NULL; | |
1110 | ||
1111 | n = i->items_next; | |
1112 | ||
1113 | free(i); | |
1114 | return dns_txt_item_free_all(n); | |
1115 | } | |
1116 | ||
1117 | bool dns_txt_item_equal(DnsTxtItem *a, DnsTxtItem *b) { | |
1118 | ||
4d247a6c LP |
1119 | if (a == b) |
1120 | return true; | |
1121 | ||
2001c805 LP |
1122 | if (!a != !b) |
1123 | return false; | |
1124 | ||
1125 | if (!a) | |
1126 | return true; | |
1127 | ||
1128 | if (a->length != b->length) | |
1129 | return false; | |
1130 | ||
1131 | if (memcmp(a->data, b->data, a->length) != 0) | |
1132 | return false; | |
1133 | ||
1134 | return dns_txt_item_equal(a->items_next, b->items_next); | |
1135 | } | |
8730bccf LP |
1136 | |
1137 | static const char* const dnssec_algorithm_table[_DNSSEC_ALGORITHM_MAX_DEFINED] = { | |
1138 | [DNSSEC_ALGORITHM_RSAMD5] = "RSAMD5", | |
1139 | [DNSSEC_ALGORITHM_DH] = "DH", | |
1140 | [DNSSEC_ALGORITHM_DSA] = "DSA", | |
1141 | [DNSSEC_ALGORITHM_ECC] = "ECC", | |
1142 | [DNSSEC_ALGORITHM_RSASHA1] = "RSASHA1", | |
1143 | [DNSSEC_ALGORITHM_DSA_NSEC3_SHA1] = "DSA-NSEC3-SHA1", | |
1144 | [DNSSEC_ALGORITHM_RSASHA1_NSEC3_SHA1] = "RSASHA1-NSEC3-SHA1", | |
1145 | [DNSSEC_ALGORITHM_RSASHA256] = "RSASHA256", | |
1146 | [DNSSEC_ALGORITHM_RSASHA512] = "RSASHA512", | |
1147 | [DNSSEC_ALGORITHM_INDIRECT] = "INDIRECT", | |
1148 | [DNSSEC_ALGORITHM_PRIVATEDNS] = "PRIVATEDNS", | |
1149 | [DNSSEC_ALGORITHM_PRIVATEOID] = "PRIVATEOID", | |
1150 | }; | |
1151 | DEFINE_STRING_TABLE_LOOKUP(dnssec_algorithm, int); | |
1152 | ||
1153 | static const char* const dnssec_digest_table[_DNSSEC_DIGEST_MAX_DEFINED] = { | |
1154 | [DNSSEC_DIGEST_SHA1] = "SHA1", | |
1155 | [DNSSEC_DIGEST_SHA256] = "SHA256", | |
1156 | }; | |
1157 | DEFINE_STRING_TABLE_LOOKUP(dnssec_digest, int); |