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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 | ||
105e1512 | 187 | int dns_resource_key_match_rr(const DnsResourceKey *key, DnsResourceRecord *rr, const char *search_domain) { |
801ad6a6 LP |
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 | ||
5d27351f | 223 | int dns_resource_key_match_cname_or_dname(const DnsResourceKey *key, const DnsResourceKey *cname, const char *search_domain) { |
801ad6a6 LP |
224 | int r; |
225 | ||
faa133f3 | 226 | assert(key); |
5d27351f | 227 | assert(cname); |
faa133f3 | 228 | |
5d27351f | 229 | if (cname->class != key->class && key->class != DNS_CLASS_ANY) |
faa133f3 LP |
230 | return 0; |
231 | ||
5d27351f TG |
232 | if (cname->type == DNS_TYPE_CNAME) |
233 | r = dns_name_equal(DNS_RESOURCE_KEY_NAME(key), DNS_RESOURCE_KEY_NAME(cname)); | |
234 | else if (cname->type == DNS_TYPE_DNAME) | |
235 | r = dns_name_endswith(DNS_RESOURCE_KEY_NAME(key), DNS_RESOURCE_KEY_NAME(cname)); | |
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 | ||
5d27351f TG |
249 | if (cname->type == DNS_TYPE_CNAME) |
250 | return dns_name_equal(joined, DNS_RESOURCE_KEY_NAME(cname)); | |
251 | else if (cname->type == DNS_TYPE_DNAME) | |
252 | return dns_name_endswith(joined, DNS_RESOURCE_KEY_NAME(cname)); | |
801ad6a6 LP |
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 | ||
65b200e7 | 264 | if (soa->class != key->class) |
547973de | 265 | return 0; |
801ad6a6 | 266 | |
547973de LP |
267 | if (soa->type != DNS_TYPE_SOA) |
268 | return 0; | |
269 | ||
0936416a | 270 | return dns_name_endswith(DNS_RESOURCE_KEY_NAME(key), DNS_RESOURCE_KEY_NAME(soa)); |
74b2466e LP |
271 | } |
272 | ||
b826ab58 | 273 | static void dns_resource_key_hash_func(const void *i, struct siphash *state) { |
322345fd | 274 | const DnsResourceKey *k = i; |
322345fd | 275 | |
b826ab58 | 276 | assert(k); |
322345fd | 277 | |
b826ab58 TG |
278 | dns_name_hash_func(DNS_RESOURCE_KEY_NAME(k), state); |
279 | siphash24_compress(&k->class, sizeof(k->class), state); | |
280 | siphash24_compress(&k->type, sizeof(k->type), state); | |
322345fd LP |
281 | } |
282 | ||
d5099efc | 283 | static int dns_resource_key_compare_func(const void *a, const void *b) { |
322345fd LP |
284 | const DnsResourceKey *x = a, *y = b; |
285 | int ret; | |
286 | ||
faa133f3 | 287 | ret = dns_name_compare_func(DNS_RESOURCE_KEY_NAME(x), DNS_RESOURCE_KEY_NAME(y)); |
322345fd LP |
288 | if (ret != 0) |
289 | return ret; | |
290 | ||
291 | if (x->type < y->type) | |
292 | return -1; | |
293 | if (x->type > y->type) | |
294 | return 1; | |
295 | ||
296 | if (x->class < y->class) | |
297 | return -1; | |
298 | if (x->class > y->class) | |
299 | return 1; | |
300 | ||
301 | return 0; | |
302 | } | |
303 | ||
d5099efc MS |
304 | const struct hash_ops dns_resource_key_hash_ops = { |
305 | .hash = dns_resource_key_hash_func, | |
306 | .compare = dns_resource_key_compare_func | |
307 | }; | |
308 | ||
2d4c5cbc | 309 | int dns_resource_key_to_string(const DnsResourceKey *key, char **ret) { |
d23a27a9 | 310 | char cbuf[strlen("CLASS") + DECIMAL_STR_MAX(uint16_t)], tbuf[strlen("TYPE") + DECIMAL_STR_MAX(uint16_t)]; |
f2af5ea3 | 311 | const char *c, *t, *n; |
2d4c5cbc LP |
312 | char *s; |
313 | ||
6af47493 LP |
314 | /* If we cannot convert the CLASS/TYPE into a known string, |
315 | use the format recommended by RFC 3597, Section 5. */ | |
316 | ||
2d4c5cbc LP |
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 | ||
f2af5ea3 LP |
329 | n = DNS_RESOURCE_KEY_NAME(key); |
330 | if (asprintf(&s, "%s%s %s %-5s", n, endswith(n, ".") ? "" : ".", c, t) < 0) | |
2d4c5cbc LP |
331 | return -ENOMEM; |
332 | ||
333 | *ret = s; | |
334 | return 0; | |
335 | } | |
336 | ||
faa133f3 | 337 | DnsResourceRecord* dns_resource_record_new(DnsResourceKey *key) { |
74b2466e LP |
338 | DnsResourceRecord *rr; |
339 | ||
340 | rr = new0(DnsResourceRecord, 1); | |
341 | if (!rr) | |
342 | return NULL; | |
343 | ||
344 | rr->n_ref = 1; | |
faa133f3 | 345 | rr->key = dns_resource_key_ref(key); |
ee3d6aff | 346 | rr->expiry = USEC_INFINITY; |
faa133f3 | 347 | |
74b2466e LP |
348 | return rr; |
349 | } | |
350 | ||
8bf52d3d LP |
351 | DnsResourceRecord* dns_resource_record_new_full(uint16_t class, uint16_t type, const char *name) { |
352 | _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL; | |
353 | ||
354 | key = dns_resource_key_new(class, type, name); | |
355 | if (!key) | |
356 | return NULL; | |
357 | ||
358 | return dns_resource_record_new(key); | |
359 | } | |
360 | ||
74b2466e LP |
361 | DnsResourceRecord* dns_resource_record_ref(DnsResourceRecord *rr) { |
362 | if (!rr) | |
363 | return NULL; | |
364 | ||
365 | assert(rr->n_ref > 0); | |
366 | rr->n_ref++; | |
367 | ||
368 | return rr; | |
369 | } | |
370 | ||
371 | DnsResourceRecord* dns_resource_record_unref(DnsResourceRecord *rr) { | |
372 | if (!rr) | |
373 | return NULL; | |
374 | ||
375 | assert(rr->n_ref > 0); | |
376 | ||
377 | if (rr->n_ref > 1) { | |
378 | rr->n_ref--; | |
379 | return NULL; | |
380 | } | |
381 | ||
faa133f3 | 382 | if (rr->key) { |
9de3e329 | 383 | switch(rr->key->type) { |
9c92ce6d LP |
384 | |
385 | case DNS_TYPE_SRV: | |
386 | free(rr->srv.name); | |
387 | break; | |
388 | ||
9de3e329 ZJS |
389 | case DNS_TYPE_PTR: |
390 | case DNS_TYPE_NS: | |
391 | case DNS_TYPE_CNAME: | |
8ac4e9e1 | 392 | case DNS_TYPE_DNAME: |
faa133f3 | 393 | free(rr->ptr.name); |
9de3e329 | 394 | break; |
9c92ce6d | 395 | |
9de3e329 | 396 | case DNS_TYPE_HINFO: |
faa133f3 LP |
397 | free(rr->hinfo.cpu); |
398 | free(rr->hinfo.os); | |
9de3e329 | 399 | break; |
9c92ce6d | 400 | |
9de3e329 | 401 | case DNS_TYPE_TXT: |
9c92ce6d | 402 | case DNS_TYPE_SPF: |
2001c805 | 403 | dns_txt_item_free_all(rr->txt.items); |
9de3e329 | 404 | break; |
9c92ce6d | 405 | |
9de3e329 | 406 | case DNS_TYPE_SOA: |
7e8e0422 LP |
407 | free(rr->soa.mname); |
408 | free(rr->soa.rname); | |
9de3e329 | 409 | break; |
9c92ce6d | 410 | |
9de3e329 | 411 | case DNS_TYPE_MX: |
946c7094 | 412 | free(rr->mx.exchange); |
9de3e329 | 413 | break; |
9c92ce6d | 414 | |
abf126a3 TG |
415 | case DNS_TYPE_DS: |
416 | free(rr->ds.digest); | |
417 | break; | |
418 | ||
42cc2eeb | 419 | case DNS_TYPE_SSHFP: |
549c1a25 | 420 | free(rr->sshfp.fingerprint); |
42cc2eeb LP |
421 | break; |
422 | ||
8db0d2f5 ZJS |
423 | case DNS_TYPE_DNSKEY: |
424 | free(rr->dnskey.key); | |
425 | break; | |
426 | ||
151226ab ZJS |
427 | case DNS_TYPE_RRSIG: |
428 | free(rr->rrsig.signer); | |
429 | free(rr->rrsig.signature); | |
430 | break; | |
431 | ||
50f1e641 TG |
432 | case DNS_TYPE_NSEC: |
433 | free(rr->nsec.next_domain_name); | |
434 | bitmap_free(rr->nsec.types); | |
435 | break; | |
436 | ||
5d45a880 TG |
437 | case DNS_TYPE_NSEC3: |
438 | free(rr->nsec3.next_hashed_name); | |
439 | free(rr->nsec3.salt); | |
440 | bitmap_free(rr->nsec3.types); | |
441 | break; | |
442 | ||
0dae31d4 | 443 | case DNS_TYPE_LOC: |
9de3e329 ZJS |
444 | case DNS_TYPE_A: |
445 | case DNS_TYPE_AAAA: | |
446 | break; | |
9c92ce6d | 447 | |
9de3e329 | 448 | default: |
faa133f3 | 449 | free(rr->generic.data); |
9de3e329 | 450 | } |
322345fd | 451 | |
a8812dd7 | 452 | free(rr->wire_format); |
faa133f3 LP |
453 | dns_resource_key_unref(rr->key); |
454 | } | |
322345fd | 455 | |
7b50eb2e | 456 | free(rr->to_string); |
faa133f3 | 457 | free(rr); |
322345fd | 458 | |
322345fd LP |
459 | return NULL; |
460 | } | |
461 | ||
623a4c97 LP |
462 | int dns_resource_record_new_reverse(DnsResourceRecord **ret, int family, const union in_addr_union *address, const char *hostname) { |
463 | _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL; | |
464 | _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL; | |
465 | _cleanup_free_ char *ptr = NULL; | |
466 | int r; | |
467 | ||
468 | assert(ret); | |
469 | assert(address); | |
470 | assert(hostname); | |
471 | ||
472 | r = dns_name_reverse(family, address, &ptr); | |
473 | if (r < 0) | |
474 | return r; | |
475 | ||
476 | key = dns_resource_key_new_consume(DNS_CLASS_IN, DNS_TYPE_PTR, ptr); | |
477 | if (!key) | |
478 | return -ENOMEM; | |
479 | ||
480 | ptr = NULL; | |
481 | ||
482 | rr = dns_resource_record_new(key); | |
483 | if (!rr) | |
484 | return -ENOMEM; | |
485 | ||
486 | rr->ptr.name = strdup(hostname); | |
487 | if (!rr->ptr.name) | |
488 | return -ENOMEM; | |
489 | ||
490 | *ret = rr; | |
491 | rr = NULL; | |
492 | ||
493 | return 0; | |
494 | } | |
495 | ||
78c6a153 LP |
496 | int dns_resource_record_new_address(DnsResourceRecord **ret, int family, const union in_addr_union *address, const char *name) { |
497 | DnsResourceRecord *rr; | |
498 | ||
499 | assert(ret); | |
500 | assert(address); | |
501 | assert(family); | |
502 | ||
503 | if (family == AF_INET) { | |
504 | ||
505 | rr = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_A, name); | |
506 | if (!rr) | |
507 | return -ENOMEM; | |
508 | ||
509 | rr->a.in_addr = address->in; | |
510 | ||
511 | } else if (family == AF_INET6) { | |
512 | ||
513 | rr = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_AAAA, name); | |
514 | if (!rr) | |
515 | return -ENOMEM; | |
516 | ||
517 | rr->aaaa.in6_addr = address->in6; | |
518 | } else | |
519 | return -EAFNOSUPPORT; | |
520 | ||
521 | *ret = rr; | |
522 | ||
523 | return 0; | |
524 | } | |
525 | ||
322345fd LP |
526 | int dns_resource_record_equal(const DnsResourceRecord *a, const DnsResourceRecord *b) { |
527 | int r; | |
528 | ||
529 | assert(a); | |
530 | assert(b); | |
531 | ||
4d247a6c LP |
532 | if (a == b) |
533 | return 1; | |
534 | ||
faa133f3 | 535 | r = dns_resource_key_equal(a->key, b->key); |
322345fd LP |
536 | if (r <= 0) |
537 | return r; | |
538 | ||
fd0b4602 LP |
539 | if (a->unparseable != b->unparseable) |
540 | return 0; | |
541 | ||
542 | switch (a->unparseable ? _DNS_TYPE_INVALID : a->key->type) { | |
2d4c5cbc | 543 | |
9c92ce6d LP |
544 | case DNS_TYPE_SRV: |
545 | r = dns_name_equal(a->srv.name, b->srv.name); | |
546 | if (r <= 0) | |
547 | return r; | |
548 | ||
549 | return a->srv.priority == b->srv.priority && | |
550 | a->srv.weight == b->srv.weight && | |
551 | a->srv.port == b->srv.port; | |
552 | ||
2d4c5cbc LP |
553 | case DNS_TYPE_PTR: |
554 | case DNS_TYPE_NS: | |
555 | case DNS_TYPE_CNAME: | |
8ac4e9e1 | 556 | case DNS_TYPE_DNAME: |
322345fd | 557 | return dns_name_equal(a->ptr.name, b->ptr.name); |
2d4c5cbc LP |
558 | |
559 | case DNS_TYPE_HINFO: | |
560 | return strcaseeq(a->hinfo.cpu, b->hinfo.cpu) && | |
561 | strcaseeq(a->hinfo.os, b->hinfo.os); | |
562 | ||
9de3e329 | 563 | case DNS_TYPE_SPF: /* exactly the same as TXT */ |
0f84a72e | 564 | case DNS_TYPE_TXT: |
2001c805 | 565 | return dns_txt_item_equal(a->txt.items, b->txt.items); |
2e276efc | 566 | |
2d4c5cbc | 567 | case DNS_TYPE_A: |
322345fd | 568 | return memcmp(&a->a.in_addr, &b->a.in_addr, sizeof(struct in_addr)) == 0; |
2d4c5cbc LP |
569 | |
570 | case DNS_TYPE_AAAA: | |
322345fd | 571 | return memcmp(&a->aaaa.in6_addr, &b->aaaa.in6_addr, sizeof(struct in6_addr)) == 0; |
2d4c5cbc LP |
572 | |
573 | case DNS_TYPE_SOA: | |
7e8e0422 LP |
574 | r = dns_name_equal(a->soa.mname, b->soa.mname); |
575 | if (r <= 0) | |
576 | return r; | |
577 | r = dns_name_equal(a->soa.rname, b->soa.rname); | |
578 | if (r <= 0) | |
579 | return r; | |
580 | ||
581 | return a->soa.serial == b->soa.serial && | |
582 | a->soa.refresh == b->soa.refresh && | |
583 | a->soa.retry == b->soa.retry && | |
584 | a->soa.expire == b->soa.expire && | |
585 | a->soa.minimum == b->soa.minimum; | |
9c92ce6d | 586 | |
946c7094 ZJS |
587 | case DNS_TYPE_MX: |
588 | if (a->mx.priority != b->mx.priority) | |
589 | return 0; | |
590 | ||
591 | return dns_name_equal(a->mx.exchange, b->mx.exchange); | |
592 | ||
0dae31d4 ZJS |
593 | case DNS_TYPE_LOC: |
594 | assert(a->loc.version == b->loc.version); | |
595 | ||
596 | return a->loc.size == b->loc.size && | |
597 | a->loc.horiz_pre == b->loc.horiz_pre && | |
598 | a->loc.vert_pre == b->loc.vert_pre && | |
599 | a->loc.latitude == b->loc.latitude && | |
600 | a->loc.longitude == b->loc.longitude && | |
601 | a->loc.altitude == b->loc.altitude; | |
602 | ||
abf126a3 TG |
603 | case DNS_TYPE_DS: |
604 | return a->ds.key_tag == b->ds.key_tag && | |
605 | a->ds.algorithm == b->ds.algorithm && | |
606 | a->ds.digest_type == b->ds.digest_type && | |
607 | a->ds.digest_size == b->ds.digest_size && | |
608 | memcmp(a->ds.digest, b->ds.digest, a->ds.digest_size) == 0; | |
609 | ||
42cc2eeb LP |
610 | case DNS_TYPE_SSHFP: |
611 | return a->sshfp.algorithm == b->sshfp.algorithm && | |
612 | a->sshfp.fptype == b->sshfp.fptype && | |
549c1a25 TG |
613 | a->sshfp.fingerprint_size == b->sshfp.fingerprint_size && |
614 | memcmp(a->sshfp.fingerprint, b->sshfp.fingerprint, a->sshfp.fingerprint_size) == 0; | |
42cc2eeb | 615 | |
8db0d2f5 | 616 | case DNS_TYPE_DNSKEY: |
f91dc240 LP |
617 | return a->dnskey.flags == b->dnskey.flags && |
618 | a->dnskey.protocol == b->dnskey.protocol && | |
8db0d2f5 ZJS |
619 | a->dnskey.algorithm == b->dnskey.algorithm && |
620 | a->dnskey.key_size == b->dnskey.key_size && | |
621 | memcmp(a->dnskey.key, b->dnskey.key, a->dnskey.key_size) == 0; | |
622 | ||
151226ab ZJS |
623 | case DNS_TYPE_RRSIG: |
624 | /* do the fast comparisons first */ | |
03664a62 LN |
625 | if (a->rrsig.type_covered != b->rrsig.type_covered || |
626 | a->rrsig.algorithm != b->rrsig.algorithm || | |
627 | a->rrsig.labels != b->rrsig.labels || | |
628 | a->rrsig.original_ttl != b->rrsig.original_ttl || | |
629 | a->rrsig.expiration != b->rrsig.expiration || | |
630 | a->rrsig.inception != b->rrsig.inception || | |
631 | a->rrsig.key_tag != b->rrsig.key_tag || | |
151226ab ZJS |
632 | a->rrsig.signature_size != b->rrsig.signature_size || |
633 | memcmp(a->rrsig.signature, b->rrsig.signature, a->rrsig.signature_size) != 0) | |
634 | return false; | |
635 | ||
636 | return dns_name_equal(a->rrsig.signer, b->rrsig.signer); | |
637 | ||
50f1e641 TG |
638 | case DNS_TYPE_NSEC: |
639 | return dns_name_equal(a->nsec.next_domain_name, b->nsec.next_domain_name) && | |
640 | bitmap_equal(a->nsec.types, b->nsec.types); | |
641 | ||
5d45a880 TG |
642 | case DNS_TYPE_NSEC3: |
643 | return a->nsec3.algorithm == b->nsec3.algorithm && | |
644 | a->nsec3.flags == b->nsec3.flags && | |
645 | a->nsec3.iterations == b->nsec3.iterations && | |
646 | a->nsec3.salt_size == b->nsec3.salt_size && | |
647 | memcmp(a->nsec3.salt, b->nsec3.salt, a->nsec3.salt_size) == 0 && | |
648 | memcmp(a->nsec3.next_hashed_name, b->nsec3.next_hashed_name, a->nsec3.next_hashed_name_size) == 0 && | |
649 | bitmap_equal(a->nsec3.types, b->nsec3.types); | |
650 | ||
2d4c5cbc | 651 | default: |
322345fd LP |
652 | return a->generic.size == b->generic.size && |
653 | memcmp(a->generic.data, b->generic.data, a->generic.size) == 0; | |
2d4c5cbc | 654 | } |
322345fd LP |
655 | } |
656 | ||
0dae31d4 ZJS |
657 | static char* format_location(uint32_t latitude, uint32_t longitude, uint32_t altitude, |
658 | uint8_t size, uint8_t horiz_pre, uint8_t vert_pre) { | |
659 | char *s; | |
660 | char NS = latitude >= 1U<<31 ? 'N' : 'S'; | |
661 | char EW = longitude >= 1U<<31 ? 'E' : 'W'; | |
662 | ||
663 | int lat = latitude >= 1U<<31 ? (int) (latitude - (1U<<31)) : (int) ((1U<<31) - latitude); | |
664 | int lon = longitude >= 1U<<31 ? (int) (longitude - (1U<<31)) : (int) ((1U<<31) - longitude); | |
665 | double alt = altitude >= 10000000u ? altitude - 10000000u : -(double)(10000000u - altitude); | |
666 | double siz = (size >> 4) * exp10((double) (size & 0xF)); | |
667 | double hor = (horiz_pre >> 4) * exp10((double) (horiz_pre & 0xF)); | |
668 | double ver = (vert_pre >> 4) * exp10((double) (vert_pre & 0xF)); | |
669 | ||
670 | if (asprintf(&s, "%d %d %.3f %c %d %d %.3f %c %.2fm %.2fm %.2fm %.2fm", | |
671 | (lat / 60000 / 60), | |
672 | (lat / 60000) % 60, | |
673 | (lat % 60000) / 1000., | |
674 | NS, | |
675 | (lon / 60000 / 60), | |
676 | (lon / 60000) % 60, | |
677 | (lon % 60000) / 1000., | |
678 | EW, | |
679 | alt / 100., | |
680 | siz / 100., | |
681 | hor / 100., | |
682 | ver / 100.) < 0) | |
683 | return NULL; | |
684 | ||
685 | return s; | |
686 | } | |
687 | ||
7c6423e1 TG |
688 | static int format_timestamp_dns(char *buf, size_t l, time_t sec) { |
689 | struct tm tm; | |
690 | ||
691 | assert(buf); | |
692 | assert(l > strlen("YYYYMMDDHHmmSS")); | |
693 | ||
694 | if (!gmtime_r(&sec, &tm)) | |
695 | return -EINVAL; | |
696 | ||
697 | if (strftime(buf, l, "%Y%m%d%H%M%S", &tm) <= 0) | |
698 | return -EINVAL; | |
699 | ||
700 | return 0; | |
701 | } | |
702 | ||
50f1e641 TG |
703 | static char *format_types(Bitmap *types) { |
704 | _cleanup_strv_free_ char **strv = NULL; | |
705 | _cleanup_free_ char *str = NULL; | |
cb57dd41 | 706 | Iterator i; |
50f1e641 TG |
707 | unsigned type; |
708 | int r; | |
709 | ||
cb57dd41 | 710 | BITMAP_FOREACH(type, types, i) { |
50f1e641 | 711 | if (dns_type_to_string(type)) { |
2c1fb4f7 | 712 | r = strv_extend(&strv, dns_type_to_string(type)); |
50f1e641 TG |
713 | if (r < 0) |
714 | return NULL; | |
715 | } else { | |
716 | char *t; | |
717 | ||
718 | r = asprintf(&t, "TYPE%u", type); | |
719 | if (r < 0) | |
720 | return NULL; | |
721 | ||
2c1fb4f7 | 722 | r = strv_consume(&strv, t); |
50f1e641 TG |
723 | if (r < 0) |
724 | return NULL; | |
725 | } | |
726 | } | |
727 | ||
728 | str = strv_join(strv, " "); | |
729 | if (!str) | |
730 | return NULL; | |
731 | ||
732 | return strjoin("( ", str, " )", NULL); | |
733 | } | |
734 | ||
2001c805 LP |
735 | static char *format_txt(DnsTxtItem *first) { |
736 | DnsTxtItem *i; | |
737 | size_t c = 1; | |
738 | char *p, *s; | |
739 | ||
740 | LIST_FOREACH(items, i, first) | |
741 | c += i->length * 4 + 3; | |
742 | ||
743 | p = s = new(char, c); | |
744 | if (!s) | |
745 | return NULL; | |
746 | ||
747 | LIST_FOREACH(items, i, first) { | |
748 | size_t j; | |
749 | ||
750 | if (i != first) | |
751 | *(p++) = ' '; | |
752 | ||
753 | *(p++) = '"'; | |
754 | ||
755 | for (j = 0; j < i->length; j++) { | |
756 | if (i->data[j] < ' ' || i->data[j] == '"' || i->data[j] >= 127) { | |
757 | *(p++) = '\\'; | |
758 | *(p++) = '0' + (i->data[j] / 100); | |
759 | *(p++) = '0' + ((i->data[j] / 10) % 10); | |
760 | *(p++) = '0' + (i->data[j] % 10); | |
761 | } else | |
762 | *(p++) = i->data[j]; | |
763 | } | |
764 | ||
765 | *(p++) = '"'; | |
766 | } | |
767 | ||
768 | *p = 0; | |
769 | return s; | |
770 | } | |
771 | ||
7b50eb2e | 772 | const char *dns_resource_record_to_string(DnsResourceRecord *rr) { |
8db0d2f5 | 773 | _cleanup_free_ char *k = NULL, *t = NULL; |
2d4c5cbc LP |
774 | char *s; |
775 | int r; | |
322345fd | 776 | |
2d4c5cbc | 777 | assert(rr); |
322345fd | 778 | |
7b50eb2e LP |
779 | if (rr->to_string) |
780 | return rr->to_string; | |
781 | ||
2d4c5cbc LP |
782 | r = dns_resource_key_to_string(rr->key, &k); |
783 | if (r < 0) | |
7b50eb2e | 784 | return NULL; |
322345fd | 785 | |
0dae31d4 | 786 | switch (rr->unparseable ? _DNS_TYPE_INVALID : rr->key->type) { |
322345fd | 787 | |
9c92ce6d LP |
788 | case DNS_TYPE_SRV: |
789 | r = asprintf(&s, "%s %u %u %u %s", | |
790 | k, | |
791 | rr->srv.priority, | |
792 | rr->srv.weight, | |
793 | rr->srv.port, | |
794 | strna(rr->srv.name)); | |
795 | if (r < 0) | |
7b50eb2e | 796 | return NULL; |
9c92ce6d LP |
797 | break; |
798 | ||
2d4c5cbc LP |
799 | case DNS_TYPE_PTR: |
800 | case DNS_TYPE_NS: | |
801 | case DNS_TYPE_CNAME: | |
8ac4e9e1 | 802 | case DNS_TYPE_DNAME: |
2d4c5cbc LP |
803 | s = strjoin(k, " ", rr->ptr.name, NULL); |
804 | if (!s) | |
7b50eb2e | 805 | return NULL; |
322345fd | 806 | |
2d4c5cbc | 807 | break; |
322345fd | 808 | |
2d4c5cbc LP |
809 | case DNS_TYPE_HINFO: |
810 | s = strjoin(k, " ", rr->hinfo.cpu, " ", rr->hinfo.os, NULL); | |
811 | if (!s) | |
7b50eb2e | 812 | return NULL; |
2d4c5cbc | 813 | break; |
322345fd | 814 | |
9de3e329 | 815 | case DNS_TYPE_SPF: /* exactly the same as TXT */ |
8db0d2f5 | 816 | case DNS_TYPE_TXT: |
2001c805 | 817 | t = format_txt(rr->txt.items); |
2e276efc | 818 | if (!t) |
7b50eb2e | 819 | return NULL; |
2e276efc ZJS |
820 | |
821 | s = strjoin(k, " ", t, NULL); | |
822 | if (!s) | |
7b50eb2e | 823 | return NULL; |
2e276efc | 824 | break; |
2e276efc | 825 | |
2d4c5cbc LP |
826 | case DNS_TYPE_A: { |
827 | _cleanup_free_ char *x = NULL; | |
322345fd | 828 | |
2d4c5cbc LP |
829 | r = in_addr_to_string(AF_INET, (const union in_addr_union*) &rr->a.in_addr, &x); |
830 | if (r < 0) | |
7b50eb2e | 831 | return NULL; |
322345fd | 832 | |
2d4c5cbc LP |
833 | s = strjoin(k, " ", x, NULL); |
834 | if (!s) | |
7b50eb2e | 835 | return NULL; |
2d4c5cbc LP |
836 | break; |
837 | } | |
322345fd | 838 | |
8db0d2f5 ZJS |
839 | case DNS_TYPE_AAAA: |
840 | r = in_addr_to_string(AF_INET6, (const union in_addr_union*) &rr->aaaa.in6_addr, &t); | |
2d4c5cbc | 841 | if (r < 0) |
7b50eb2e | 842 | return NULL; |
322345fd | 843 | |
8db0d2f5 | 844 | s = strjoin(k, " ", t, NULL); |
2d4c5cbc | 845 | if (!s) |
7b50eb2e | 846 | return NULL; |
2d4c5cbc | 847 | break; |
322345fd | 848 | |
2d4c5cbc LP |
849 | case DNS_TYPE_SOA: |
850 | r = asprintf(&s, "%s %s %s %u %u %u %u %u", | |
851 | k, | |
852 | strna(rr->soa.mname), | |
853 | strna(rr->soa.rname), | |
854 | rr->soa.serial, | |
855 | rr->soa.refresh, | |
856 | rr->soa.retry, | |
857 | rr->soa.expire, | |
858 | rr->soa.minimum); | |
859 | if (r < 0) | |
7b50eb2e | 860 | return NULL; |
2d4c5cbc LP |
861 | break; |
862 | ||
946c7094 ZJS |
863 | case DNS_TYPE_MX: |
864 | r = asprintf(&s, "%s %u %s", | |
865 | k, | |
866 | rr->mx.priority, | |
867 | rr->mx.exchange); | |
868 | if (r < 0) | |
7b50eb2e | 869 | return NULL; |
946c7094 ZJS |
870 | break; |
871 | ||
8db0d2f5 | 872 | case DNS_TYPE_LOC: |
0dae31d4 ZJS |
873 | assert(rr->loc.version == 0); |
874 | ||
8db0d2f5 ZJS |
875 | t = format_location(rr->loc.latitude, |
876 | rr->loc.longitude, | |
877 | rr->loc.altitude, | |
878 | rr->loc.size, | |
879 | rr->loc.horiz_pre, | |
880 | rr->loc.vert_pre); | |
881 | if (!t) | |
7b50eb2e | 882 | return NULL; |
0dae31d4 | 883 | |
8db0d2f5 | 884 | s = strjoin(k, " ", t, NULL); |
0dae31d4 | 885 | if (!s) |
7b50eb2e | 886 | return NULL; |
0dae31d4 | 887 | break; |
0dae31d4 | 888 | |
abf126a3 TG |
889 | case DNS_TYPE_DS: |
890 | t = hexmem(rr->ds.digest, rr->ds.digest_size); | |
891 | if (!t) | |
7b50eb2e | 892 | return NULL; |
abf126a3 TG |
893 | |
894 | r = asprintf(&s, "%s %u %u %u %s", | |
895 | k, | |
896 | rr->ds.key_tag, | |
897 | rr->ds.algorithm, | |
898 | rr->ds.digest_type, | |
899 | t); | |
900 | if (r < 0) | |
7b50eb2e | 901 | return NULL; |
abf126a3 TG |
902 | break; |
903 | ||
8db0d2f5 | 904 | case DNS_TYPE_SSHFP: |
549c1a25 | 905 | t = hexmem(rr->sshfp.fingerprint, rr->sshfp.fingerprint_size); |
8db0d2f5 | 906 | if (!t) |
7b50eb2e | 907 | return NULL; |
42cc2eeb LP |
908 | |
909 | r = asprintf(&s, "%s %u %u %s", | |
910 | k, | |
911 | rr->sshfp.algorithm, | |
912 | rr->sshfp.fptype, | |
8db0d2f5 | 913 | t); |
42cc2eeb | 914 | if (r < 0) |
7b50eb2e | 915 | return NULL; |
42cc2eeb | 916 | break; |
42cc2eeb | 917 | |
ff3d6560 | 918 | case DNS_TYPE_DNSKEY: { |
8e54f5d9 | 919 | _cleanup_free_ char *alg = NULL; |
ff3d6560 | 920 | |
8e54f5d9 LP |
921 | r = dnssec_algorithm_to_string_alloc(rr->dnskey.algorithm, &alg); |
922 | if (r < 0) | |
923 | return NULL; | |
ff3d6560 | 924 | |
1bf968f3 | 925 | t = base64mem(rr->dnskey.key, rr->dnskey.key_size); |
8db0d2f5 | 926 | if (!t) |
7b50eb2e | 927 | return NULL; |
2d4c5cbc | 928 | |
8e54f5d9 | 929 | r = asprintf(&s, "%s %u %u %s %s", |
8db0d2f5 | 930 | k, |
f91dc240 LP |
931 | rr->dnskey.flags, |
932 | rr->dnskey.protocol, | |
8e54f5d9 | 933 | alg, |
8db0d2f5 ZJS |
934 | t); |
935 | if (r < 0) | |
7b50eb2e | 936 | return NULL; |
8db0d2f5 | 937 | break; |
ff3d6560 | 938 | } |
2d4c5cbc | 939 | |
151226ab | 940 | case DNS_TYPE_RRSIG: { |
8e54f5d9 | 941 | _cleanup_free_ char *alg = NULL; |
7c6423e1 | 942 | char expiration[strlen("YYYYMMDDHHmmSS") + 1], inception[strlen("YYYYMMDDHHmmSS") + 1]; |
8e54f5d9 | 943 | const char *type; |
151226ab ZJS |
944 | |
945 | type = dns_type_to_string(rr->rrsig.type_covered); | |
8e54f5d9 LP |
946 | |
947 | r = dnssec_algorithm_to_string_alloc(rr->rrsig.algorithm, &alg); | |
948 | if (r < 0) | |
949 | return NULL; | |
151226ab | 950 | |
1bf968f3 | 951 | t = base64mem(rr->rrsig.signature, rr->rrsig.signature_size); |
151226ab | 952 | if (!t) |
7b50eb2e | 953 | return NULL; |
151226ab | 954 | |
7c6423e1 TG |
955 | r = format_timestamp_dns(expiration, sizeof(expiration), rr->rrsig.expiration); |
956 | if (r < 0) | |
7b50eb2e | 957 | return NULL; |
7c6423e1 TG |
958 | |
959 | r = format_timestamp_dns(inception, sizeof(inception), rr->rrsig.inception); | |
960 | if (r < 0) | |
7b50eb2e | 961 | return NULL; |
7c6423e1 | 962 | |
151226ab ZJS |
963 | /* TYPE?? follows |
964 | * http://tools.ietf.org/html/rfc3597#section-5 */ | |
965 | ||
8e54f5d9 | 966 | r = asprintf(&s, "%s %s%.*u %s %u %u %s %s %u %s %s", |
151226ab ZJS |
967 | k, |
968 | type ?: "TYPE", | |
969 | type ? 0 : 1, type ? 0u : (unsigned) rr->rrsig.type_covered, | |
8e54f5d9 | 970 | alg, |
151226ab ZJS |
971 | rr->rrsig.labels, |
972 | rr->rrsig.original_ttl, | |
7c6423e1 TG |
973 | expiration, |
974 | inception, | |
151226ab ZJS |
975 | rr->rrsig.key_tag, |
976 | rr->rrsig.signer, | |
977 | t); | |
978 | if (r < 0) | |
7b50eb2e | 979 | return NULL; |
151226ab ZJS |
980 | break; |
981 | } | |
982 | ||
50f1e641 TG |
983 | case DNS_TYPE_NSEC: |
984 | t = format_types(rr->nsec.types); | |
985 | if (!t) | |
7b50eb2e | 986 | return NULL; |
50f1e641 TG |
987 | |
988 | r = asprintf(&s, "%s %s %s", | |
989 | k, | |
990 | rr->nsec.next_domain_name, | |
991 | t); | |
992 | if (r < 0) | |
7b50eb2e | 993 | return NULL; |
50f1e641 TG |
994 | break; |
995 | ||
5d45a880 TG |
996 | case DNS_TYPE_NSEC3: { |
997 | _cleanup_free_ char *salt = NULL, *hash = NULL; | |
998 | ||
f5430a3e | 999 | if (rr->nsec3.salt_size > 0) { |
5d45a880 TG |
1000 | salt = hexmem(rr->nsec3.salt, rr->nsec3.salt_size); |
1001 | if (!salt) | |
7b50eb2e | 1002 | return NULL; |
5d45a880 TG |
1003 | } |
1004 | ||
1005 | hash = base32hexmem(rr->nsec3.next_hashed_name, rr->nsec3.next_hashed_name_size, false); | |
1006 | if (!hash) | |
7b50eb2e | 1007 | return NULL; |
5d45a880 TG |
1008 | |
1009 | t = format_types(rr->nsec3.types); | |
1010 | if (!t) | |
7b50eb2e | 1011 | return NULL; |
5d45a880 TG |
1012 | |
1013 | r = asprintf(&s, "%s %"PRIu8" %"PRIu8" %"PRIu16" %s %s %s", | |
1014 | k, | |
1015 | rr->nsec3.algorithm, | |
1016 | rr->nsec3.flags, | |
1017 | rr->nsec3.iterations, | |
f5430a3e | 1018 | rr->nsec3.salt_size > 0 ? salt : "-", |
5d45a880 TG |
1019 | hash, |
1020 | t); | |
1021 | if (r < 0) | |
7b50eb2e | 1022 | return NULL; |
5d45a880 TG |
1023 | |
1024 | break; | |
1025 | } | |
1026 | ||
8db0d2f5 ZJS |
1027 | default: |
1028 | t = hexmem(rr->generic.data, rr->generic.size); | |
1029 | if (!t) | |
7b50eb2e | 1030 | return NULL; |
8db0d2f5 | 1031 | |
6af47493 | 1032 | /* Format as documented in RFC 3597, Section 5 */ |
f5430a3e | 1033 | r = asprintf(&s, "%s \\# %zu %s", k, rr->generic.size, t); |
d23a27a9 | 1034 | if (r < 0) |
7b50eb2e | 1035 | return NULL; |
2d4c5cbc | 1036 | break; |
8db0d2f5 | 1037 | } |
2d4c5cbc | 1038 | |
7b50eb2e LP |
1039 | rr->to_string = s; |
1040 | return s; | |
2d4c5cbc | 1041 | } |
322345fd | 1042 | |
a8812dd7 LP |
1043 | int dns_resource_record_to_wire_format(DnsResourceRecord *rr, bool canonical) { |
1044 | ||
1045 | DnsPacket packet = { | |
1046 | .n_ref = 1, | |
1047 | .protocol = DNS_PROTOCOL_DNS, | |
1048 | .on_stack = true, | |
1049 | .refuse_compression = true, | |
1050 | .canonical_form = canonical, | |
1051 | }; | |
1052 | ||
1053 | size_t start, rds; | |
1054 | int r; | |
1055 | ||
1056 | assert(rr); | |
1057 | ||
1058 | /* Generates the RR in wire-format, optionally in the | |
1059 | * canonical form as discussed in the DNSSEC RFC 4034, Section | |
1060 | * 6.2. We allocate a throw-away DnsPacket object on the stack | |
1061 | * here, because we need some book-keeping for memory | |
1062 | * management, and can reuse the DnsPacket serializer, that | |
1063 | * can generate the canonical form, too, but also knows label | |
1064 | * compression and suchlike. */ | |
1065 | ||
1066 | if (rr->wire_format && rr->wire_format_canonical == canonical) | |
1067 | return 0; | |
1068 | ||
1069 | r = dns_packet_append_rr(&packet, rr, &start, &rds); | |
1070 | if (r < 0) | |
1071 | return r; | |
1072 | ||
1073 | assert(start == 0); | |
1074 | assert(packet._data); | |
1075 | ||
1076 | free(rr->wire_format); | |
1077 | rr->wire_format = packet._data; | |
1078 | rr->wire_format_size = packet.size; | |
1079 | rr->wire_format_rdata_offset = rds; | |
1080 | rr->wire_format_canonical = canonical; | |
1081 | ||
1082 | packet._data = NULL; | |
1083 | dns_packet_unref(&packet); | |
1084 | ||
1085 | return 0; | |
1086 | } | |
1087 | ||
2001c805 LP |
1088 | DnsTxtItem *dns_txt_item_free_all(DnsTxtItem *i) { |
1089 | DnsTxtItem *n; | |
1090 | ||
1091 | if (!i) | |
1092 | return NULL; | |
1093 | ||
1094 | n = i->items_next; | |
1095 | ||
1096 | free(i); | |
1097 | return dns_txt_item_free_all(n); | |
1098 | } | |
1099 | ||
1100 | bool dns_txt_item_equal(DnsTxtItem *a, DnsTxtItem *b) { | |
1101 | ||
4d247a6c LP |
1102 | if (a == b) |
1103 | return true; | |
1104 | ||
2001c805 LP |
1105 | if (!a != !b) |
1106 | return false; | |
1107 | ||
1108 | if (!a) | |
1109 | return true; | |
1110 | ||
1111 | if (a->length != b->length) | |
1112 | return false; | |
1113 | ||
1114 | if (memcmp(a->data, b->data, a->length) != 0) | |
1115 | return false; | |
1116 | ||
1117 | return dns_txt_item_equal(a->items_next, b->items_next); | |
1118 | } | |
8730bccf LP |
1119 | |
1120 | static const char* const dnssec_algorithm_table[_DNSSEC_ALGORITHM_MAX_DEFINED] = { | |
6f717d08 | 1121 | /* Mnemonics as listed on https://www.iana.org/assignments/dns-sec-alg-numbers/dns-sec-alg-numbers.xhtml */ |
8730bccf LP |
1122 | [DNSSEC_ALGORITHM_RSAMD5] = "RSAMD5", |
1123 | [DNSSEC_ALGORITHM_DH] = "DH", | |
1124 | [DNSSEC_ALGORITHM_DSA] = "DSA", | |
1125 | [DNSSEC_ALGORITHM_ECC] = "ECC", | |
1126 | [DNSSEC_ALGORITHM_RSASHA1] = "RSASHA1", | |
1127 | [DNSSEC_ALGORITHM_DSA_NSEC3_SHA1] = "DSA-NSEC3-SHA1", | |
1128 | [DNSSEC_ALGORITHM_RSASHA1_NSEC3_SHA1] = "RSASHA1-NSEC3-SHA1", | |
1129 | [DNSSEC_ALGORITHM_RSASHA256] = "RSASHA256", | |
1130 | [DNSSEC_ALGORITHM_RSASHA512] = "RSASHA512", | |
6f717d08 LP |
1131 | [DNSSEC_ALGORITHM_ECC_GOST] = "ECC-GOST", |
1132 | [DNSSEC_ALGORITHM_ECDSAP256SHA256] = "ECDSAP256SHA256", | |
1133 | [DNSSEC_ALGORITHM_ECDSAP384SHA384] = "ECDSAP384SHA384", | |
8730bccf LP |
1134 | [DNSSEC_ALGORITHM_INDIRECT] = "INDIRECT", |
1135 | [DNSSEC_ALGORITHM_PRIVATEDNS] = "PRIVATEDNS", | |
1136 | [DNSSEC_ALGORITHM_PRIVATEOID] = "PRIVATEOID", | |
1137 | }; | |
8e54f5d9 | 1138 | DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(dnssec_algorithm, int, 255); |
8730bccf LP |
1139 | |
1140 | static const char* const dnssec_digest_table[_DNSSEC_DIGEST_MAX_DEFINED] = { | |
6f717d08 LP |
1141 | /* Names as listed on https://www.iana.org/assignments/ds-rr-types/ds-rr-types.xhtml */ |
1142 | [DNSSEC_DIGEST_SHA1] = "SHA-1", | |
1143 | [DNSSEC_DIGEST_SHA256] = "SHA-256", | |
1144 | [DNSSEC_DIGEST_GOST_R_34_11_94] = "GOST_R_34.11-94", | |
1145 | [DNSSEC_DIGEST_SHA384] = "SHA-384", | |
8730bccf | 1146 | }; |
8e54f5d9 | 1147 | DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(dnssec_digest, int, 255); |