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Commit | Line | Data |
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74b2466e LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2014 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
0dae31d4 ZJS |
20 | #include <math.h> |
21 | ||
b5efdb8a | 22 | #include "alloc-util.h" |
4ad7f276 | 23 | #include "dns-domain.h" |
7263f724 | 24 | #include "dns-type.h" |
95052df3 | 25 | #include "escape.h" |
e4e73a63 | 26 | #include "hexdecoct.h" |
fc8eec10 | 27 | #include "resolved-dns-dnssec.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" | |
d7671a3e | 33 | #include "terminal-util.h" |
74b2466e | 34 | |
faa133f3 LP |
35 | DnsResourceKey* dns_resource_key_new(uint16_t class, uint16_t type, const char *name) { |
36 | DnsResourceKey *k; | |
37 | size_t l; | |
74b2466e | 38 | |
faa133f3 LP |
39 | assert(name); |
40 | ||
41 | l = strlen(name); | |
42 | k = malloc0(sizeof(DnsResourceKey) + l + 1); | |
43 | if (!k) | |
44 | return NULL; | |
45 | ||
46 | k->n_ref = 1; | |
47 | k->class = class; | |
48 | k->type = type; | |
49 | ||
50 | strcpy((char*) k + sizeof(DnsResourceKey), name); | |
51 | ||
52 | return k; | |
53 | } | |
54 | ||
36d9205d | 55 | DnsResourceKey* dns_resource_key_new_redirect(const DnsResourceKey *key, const DnsResourceRecord *cname) { |
58db254a LP |
56 | int r; |
57 | ||
36d9205d TG |
58 | assert(key); |
59 | assert(cname); | |
60 | ||
58db254a LP |
61 | assert(IN_SET(cname->key->type, DNS_TYPE_CNAME, DNS_TYPE_DNAME)); |
62 | ||
63 | if (cname->key->type == DNS_TYPE_CNAME) | |
64 | return dns_resource_key_new(key->class, key->type, cname->cname.name); | |
65 | else { | |
66 | DnsResourceKey *k; | |
67 | char *destination = NULL; | |
68 | ||
1c02e7ba | 69 | r = dns_name_change_suffix(dns_resource_key_name(key), dns_resource_key_name(cname->key), cname->dname.name, &destination); |
58db254a LP |
70 | if (r < 0) |
71 | return NULL; | |
72 | if (r == 0) | |
73 | return dns_resource_key_ref((DnsResourceKey*) key); | |
74 | ||
75 | k = dns_resource_key_new_consume(key->class, key->type, destination); | |
6b430fdb ZJS |
76 | if (!k) |
77 | return mfree(destination); | |
58db254a LP |
78 | |
79 | return k; | |
80 | } | |
36d9205d TG |
81 | } |
82 | ||
801ad6a6 LP |
83 | int dns_resource_key_new_append_suffix(DnsResourceKey **ret, DnsResourceKey *key, char *name) { |
84 | DnsResourceKey *new_key; | |
85 | char *joined; | |
86 | int r; | |
87 | ||
88 | assert(ret); | |
89 | assert(key); | |
90 | assert(name); | |
91 | ||
dc477e73 | 92 | if (dns_name_is_root(name)) { |
801ad6a6 LP |
93 | *ret = dns_resource_key_ref(key); |
94 | return 0; | |
95 | } | |
96 | ||
1c02e7ba | 97 | r = dns_name_concat(dns_resource_key_name(key), name, &joined); |
801ad6a6 LP |
98 | if (r < 0) |
99 | return r; | |
100 | ||
101 | new_key = dns_resource_key_new_consume(key->class, key->type, joined); | |
102 | if (!new_key) { | |
103 | free(joined); | |
104 | return -ENOMEM; | |
105 | } | |
106 | ||
107 | *ret = new_key; | |
108 | return 0; | |
109 | } | |
110 | ||
faa133f3 LP |
111 | DnsResourceKey* dns_resource_key_new_consume(uint16_t class, uint16_t type, char *name) { |
112 | DnsResourceKey *k; | |
113 | ||
114 | assert(name); | |
115 | ||
116 | k = new0(DnsResourceKey, 1); | |
117 | if (!k) | |
118 | return NULL; | |
119 | ||
120 | k->n_ref = 1; | |
121 | k->class = class; | |
122 | k->type = type; | |
123 | k->_name = name; | |
124 | ||
125 | return k; | |
126 | } | |
127 | ||
128 | DnsResourceKey* dns_resource_key_ref(DnsResourceKey *k) { | |
129 | ||
130 | if (!k) | |
131 | return NULL; | |
132 | ||
1b4f6e79 LP |
133 | /* Static/const keys created with DNS_RESOURCE_KEY_CONST will |
134 | * set this to -1, they should not be reffed/unreffed */ | |
135 | assert(k->n_ref != (unsigned) -1); | |
136 | ||
faa133f3 LP |
137 | assert(k->n_ref > 0); |
138 | k->n_ref++; | |
139 | ||
140 | return k; | |
141 | } | |
142 | ||
143 | DnsResourceKey* dns_resource_key_unref(DnsResourceKey *k) { | |
144 | if (!k) | |
145 | return NULL; | |
146 | ||
1b4f6e79 | 147 | assert(k->n_ref != (unsigned) -1); |
faa133f3 LP |
148 | assert(k->n_ref > 0); |
149 | ||
150 | if (k->n_ref == 1) { | |
151 | free(k->_name); | |
152 | free(k); | |
153 | } else | |
154 | k->n_ref--; | |
155 | ||
156 | return NULL; | |
157 | } | |
158 | ||
1c02e7ba ZJS |
159 | const char* dns_resource_key_name(const DnsResourceKey *key) { |
160 | const char *name; | |
161 | ||
162 | if (!key) | |
163 | return NULL; | |
164 | ||
165 | if (key->_name) | |
166 | name = key->_name; | |
167 | else | |
168 | name = (char*) key + sizeof(DnsResourceKey); | |
169 | ||
170 | if (dns_name_is_root(name)) | |
171 | return "."; | |
172 | else | |
173 | return name; | |
174 | } | |
175 | ||
28b9b764 LP |
176 | bool dns_resource_key_is_address(const DnsResourceKey *key) { |
177 | assert(key); | |
178 | ||
179 | /* Check if this is an A or AAAA resource key */ | |
180 | ||
181 | return key->class == DNS_CLASS_IN && IN_SET(key->type, DNS_TYPE_A, DNS_TYPE_AAAA); | |
182 | } | |
183 | ||
faa133f3 LP |
184 | int dns_resource_key_equal(const DnsResourceKey *a, const DnsResourceKey *b) { |
185 | int r; | |
186 | ||
4d247a6c LP |
187 | if (a == b) |
188 | return 1; | |
189 | ||
1c02e7ba | 190 | r = dns_name_equal(dns_resource_key_name(a), dns_resource_key_name(b)); |
faa133f3 LP |
191 | if (r <= 0) |
192 | return r; | |
193 | ||
194 | if (a->class != b->class) | |
195 | return 0; | |
196 | ||
197 | if (a->type != b->type) | |
198 | return 0; | |
199 | ||
200 | return 1; | |
201 | } | |
202 | ||
105e1512 | 203 | int dns_resource_key_match_rr(const DnsResourceKey *key, DnsResourceRecord *rr, const char *search_domain) { |
801ad6a6 LP |
204 | int r; |
205 | ||
faa133f3 LP |
206 | assert(key); |
207 | assert(rr); | |
208 | ||
4d247a6c LP |
209 | if (key == rr->key) |
210 | return 1; | |
211 | ||
801ad6a6 LP |
212 | /* Checks if an rr matches the specified key. If a search |
213 | * domain is specified, it will also be checked if the key | |
214 | * with the search domain suffixed might match the RR. */ | |
215 | ||
faa133f3 LP |
216 | if (rr->key->class != key->class && key->class != DNS_CLASS_ANY) |
217 | return 0; | |
218 | ||
219 | if (rr->key->type != key->type && key->type != DNS_TYPE_ANY) | |
220 | return 0; | |
221 | ||
1c02e7ba | 222 | r = dns_name_equal(dns_resource_key_name(rr->key), dns_resource_key_name(key)); |
801ad6a6 LP |
223 | if (r != 0) |
224 | return r; | |
225 | ||
226 | if (search_domain) { | |
227 | _cleanup_free_ char *joined = NULL; | |
228 | ||
1c02e7ba | 229 | r = dns_name_concat(dns_resource_key_name(key), search_domain, &joined); |
801ad6a6 LP |
230 | if (r < 0) |
231 | return r; | |
232 | ||
1c02e7ba | 233 | return dns_name_equal(dns_resource_key_name(rr->key), joined); |
801ad6a6 LP |
234 | } |
235 | ||
236 | return 0; | |
faa133f3 LP |
237 | } |
238 | ||
5d27351f | 239 | int dns_resource_key_match_cname_or_dname(const DnsResourceKey *key, const DnsResourceKey *cname, const char *search_domain) { |
801ad6a6 LP |
240 | int r; |
241 | ||
faa133f3 | 242 | assert(key); |
5d27351f | 243 | assert(cname); |
faa133f3 | 244 | |
5d27351f | 245 | if (cname->class != key->class && key->class != DNS_CLASS_ANY) |
faa133f3 LP |
246 | return 0; |
247 | ||
5d27351f | 248 | if (cname->type == DNS_TYPE_CNAME) |
1c02e7ba | 249 | r = dns_name_equal(dns_resource_key_name(key), dns_resource_key_name(cname)); |
5d27351f | 250 | else if (cname->type == DNS_TYPE_DNAME) |
1c02e7ba | 251 | r = dns_name_endswith(dns_resource_key_name(key), dns_resource_key_name(cname)); |
58db254a | 252 | else |
faa133f3 | 253 | return 0; |
801ad6a6 LP |
254 | |
255 | if (r != 0) | |
256 | return r; | |
257 | ||
258 | if (search_domain) { | |
259 | _cleanup_free_ char *joined = NULL; | |
260 | ||
1c02e7ba | 261 | r = dns_name_concat(dns_resource_key_name(key), search_domain, &joined); |
801ad6a6 LP |
262 | if (r < 0) |
263 | return r; | |
264 | ||
5d27351f | 265 | if (cname->type == DNS_TYPE_CNAME) |
1c02e7ba | 266 | return dns_name_equal(joined, dns_resource_key_name(cname)); |
5d27351f | 267 | else if (cname->type == DNS_TYPE_DNAME) |
1c02e7ba | 268 | return dns_name_endswith(joined, dns_resource_key_name(cname)); |
801ad6a6 LP |
269 | } |
270 | ||
271 | return 0; | |
547973de LP |
272 | } |
273 | ||
274 | int dns_resource_key_match_soa(const DnsResourceKey *key, const DnsResourceKey *soa) { | |
275 | assert(soa); | |
276 | assert(key); | |
277 | ||
278 | /* Checks whether 'soa' is a SOA record for the specified key. */ | |
279 | ||
65b200e7 | 280 | if (soa->class != key->class) |
547973de | 281 | return 0; |
801ad6a6 | 282 | |
547973de LP |
283 | if (soa->type != DNS_TYPE_SOA) |
284 | return 0; | |
285 | ||
1c02e7ba | 286 | return dns_name_endswith(dns_resource_key_name(key), dns_resource_key_name(soa)); |
74b2466e LP |
287 | } |
288 | ||
b826ab58 | 289 | static void dns_resource_key_hash_func(const void *i, struct siphash *state) { |
322345fd | 290 | const DnsResourceKey *k = i; |
322345fd | 291 | |
b826ab58 | 292 | assert(k); |
322345fd | 293 | |
1c02e7ba | 294 | dns_name_hash_func(dns_resource_key_name(k), state); |
b826ab58 TG |
295 | siphash24_compress(&k->class, sizeof(k->class), state); |
296 | siphash24_compress(&k->type, sizeof(k->type), state); | |
322345fd LP |
297 | } |
298 | ||
d5099efc | 299 | static int dns_resource_key_compare_func(const void *a, const void *b) { |
322345fd LP |
300 | const DnsResourceKey *x = a, *y = b; |
301 | int ret; | |
302 | ||
1c02e7ba | 303 | ret = dns_name_compare_func(dns_resource_key_name(x), dns_resource_key_name(y)); |
322345fd LP |
304 | if (ret != 0) |
305 | return ret; | |
306 | ||
307 | if (x->type < y->type) | |
308 | return -1; | |
309 | if (x->type > y->type) | |
310 | return 1; | |
311 | ||
312 | if (x->class < y->class) | |
313 | return -1; | |
314 | if (x->class > y->class) | |
315 | return 1; | |
316 | ||
317 | return 0; | |
318 | } | |
319 | ||
d5099efc MS |
320 | const struct hash_ops dns_resource_key_hash_ops = { |
321 | .hash = dns_resource_key_hash_func, | |
322 | .compare = dns_resource_key_compare_func | |
323 | }; | |
324 | ||
202b76ae | 325 | char* dns_resource_key_to_string(const DnsResourceKey *key, char *buf, size_t buf_size) { |
1c02e7ba | 326 | const char *c, *t; |
202b76ae | 327 | char *ans = buf; |
2d4c5cbc | 328 | |
6af47493 LP |
329 | /* If we cannot convert the CLASS/TYPE into a known string, |
330 | use the format recommended by RFC 3597, Section 5. */ | |
331 | ||
2d4c5cbc | 332 | c = dns_class_to_string(key->class); |
2d4c5cbc | 333 | t = dns_type_to_string(key->type); |
2d4c5cbc | 334 | |
202b76ae ZJS |
335 | snprintf(buf, buf_size, "%s %s%s%.0u %s%s%.0u", |
336 | dns_resource_key_name(key), | |
337 | c ?: "", c ? "" : "CLASS", c ? 0 : key->class, | |
338 | t ?: "", t ? "" : "TYPE", t ? 0 : key->class); | |
2d4c5cbc | 339 | |
202b76ae | 340 | return ans; |
2d4c5cbc LP |
341 | } |
342 | ||
f57e3cd5 LP |
343 | bool dns_resource_key_reduce(DnsResourceKey **a, DnsResourceKey **b) { |
344 | assert(a); | |
345 | assert(b); | |
346 | ||
347 | /* Try to replace one RR key by another if they are identical, thus saving a bit of memory. Note that we do | |
348 | * this only for RR keys, not for RRs themselves, as they carry a lot of additional metadata (where they come | |
349 | * from, validity data, and suchlike), and cannot be replaced so easily by other RRs that have the same | |
350 | * superficial data. */ | |
351 | ||
352 | if (!*a) | |
353 | return false; | |
354 | if (!*b) | |
355 | return false; | |
356 | ||
357 | /* We refuse merging const keys */ | |
358 | if ((*a)->n_ref == (unsigned) -1) | |
359 | return false; | |
360 | if ((*b)->n_ref == (unsigned) -1) | |
361 | return false; | |
362 | ||
363 | /* Already the same? */ | |
364 | if (*a == *b) | |
365 | return true; | |
366 | ||
367 | /* Are they really identical? */ | |
368 | if (dns_resource_key_equal(*a, *b) <= 0) | |
369 | return false; | |
370 | ||
371 | /* Keep the one which already has more references. */ | |
372 | if ((*a)->n_ref > (*b)->n_ref) { | |
373 | dns_resource_key_unref(*b); | |
374 | *b = dns_resource_key_ref(*a); | |
375 | } else { | |
376 | dns_resource_key_unref(*a); | |
377 | *a = dns_resource_key_ref(*b); | |
378 | } | |
379 | ||
380 | return true; | |
381 | } | |
382 | ||
faa133f3 | 383 | DnsResourceRecord* dns_resource_record_new(DnsResourceKey *key) { |
74b2466e LP |
384 | DnsResourceRecord *rr; |
385 | ||
386 | rr = new0(DnsResourceRecord, 1); | |
387 | if (!rr) | |
388 | return NULL; | |
389 | ||
390 | rr->n_ref = 1; | |
faa133f3 | 391 | rr->key = dns_resource_key_ref(key); |
ee3d6aff | 392 | rr->expiry = USEC_INFINITY; |
97c67192 | 393 | rr->n_skip_labels_signer = rr->n_skip_labels_source = (unsigned) -1; |
faa133f3 | 394 | |
74b2466e LP |
395 | return rr; |
396 | } | |
397 | ||
8bf52d3d LP |
398 | DnsResourceRecord* dns_resource_record_new_full(uint16_t class, uint16_t type, const char *name) { |
399 | _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL; | |
400 | ||
401 | key = dns_resource_key_new(class, type, name); | |
402 | if (!key) | |
403 | return NULL; | |
404 | ||
405 | return dns_resource_record_new(key); | |
406 | } | |
407 | ||
74b2466e LP |
408 | DnsResourceRecord* dns_resource_record_ref(DnsResourceRecord *rr) { |
409 | if (!rr) | |
410 | return NULL; | |
411 | ||
412 | assert(rr->n_ref > 0); | |
413 | rr->n_ref++; | |
414 | ||
415 | return rr; | |
416 | } | |
417 | ||
418 | DnsResourceRecord* dns_resource_record_unref(DnsResourceRecord *rr) { | |
419 | if (!rr) | |
420 | return NULL; | |
421 | ||
422 | assert(rr->n_ref > 0); | |
423 | ||
424 | if (rr->n_ref > 1) { | |
425 | rr->n_ref--; | |
426 | return NULL; | |
427 | } | |
428 | ||
faa133f3 | 429 | if (rr->key) { |
9de3e329 | 430 | switch(rr->key->type) { |
9c92ce6d LP |
431 | |
432 | case DNS_TYPE_SRV: | |
433 | free(rr->srv.name); | |
434 | break; | |
435 | ||
9de3e329 ZJS |
436 | case DNS_TYPE_PTR: |
437 | case DNS_TYPE_NS: | |
438 | case DNS_TYPE_CNAME: | |
8ac4e9e1 | 439 | case DNS_TYPE_DNAME: |
faa133f3 | 440 | free(rr->ptr.name); |
9de3e329 | 441 | break; |
9c92ce6d | 442 | |
9de3e329 | 443 | case DNS_TYPE_HINFO: |
faa133f3 LP |
444 | free(rr->hinfo.cpu); |
445 | free(rr->hinfo.os); | |
9de3e329 | 446 | break; |
9c92ce6d | 447 | |
9de3e329 | 448 | case DNS_TYPE_TXT: |
9c92ce6d | 449 | case DNS_TYPE_SPF: |
2001c805 | 450 | dns_txt_item_free_all(rr->txt.items); |
9de3e329 | 451 | break; |
9c92ce6d | 452 | |
9de3e329 | 453 | case DNS_TYPE_SOA: |
7e8e0422 LP |
454 | free(rr->soa.mname); |
455 | free(rr->soa.rname); | |
9de3e329 | 456 | break; |
9c92ce6d | 457 | |
9de3e329 | 458 | case DNS_TYPE_MX: |
946c7094 | 459 | free(rr->mx.exchange); |
9de3e329 | 460 | break; |
9c92ce6d | 461 | |
abf126a3 TG |
462 | case DNS_TYPE_DS: |
463 | free(rr->ds.digest); | |
464 | break; | |
465 | ||
42cc2eeb | 466 | case DNS_TYPE_SSHFP: |
549c1a25 | 467 | free(rr->sshfp.fingerprint); |
42cc2eeb LP |
468 | break; |
469 | ||
8db0d2f5 ZJS |
470 | case DNS_TYPE_DNSKEY: |
471 | free(rr->dnskey.key); | |
472 | break; | |
473 | ||
151226ab ZJS |
474 | case DNS_TYPE_RRSIG: |
475 | free(rr->rrsig.signer); | |
476 | free(rr->rrsig.signature); | |
477 | break; | |
478 | ||
50f1e641 TG |
479 | case DNS_TYPE_NSEC: |
480 | free(rr->nsec.next_domain_name); | |
481 | bitmap_free(rr->nsec.types); | |
482 | break; | |
483 | ||
5d45a880 TG |
484 | case DNS_TYPE_NSEC3: |
485 | free(rr->nsec3.next_hashed_name); | |
486 | free(rr->nsec3.salt); | |
487 | bitmap_free(rr->nsec3.types); | |
488 | break; | |
489 | ||
0dae31d4 | 490 | case DNS_TYPE_LOC: |
9de3e329 ZJS |
491 | case DNS_TYPE_A: |
492 | case DNS_TYPE_AAAA: | |
493 | break; | |
9c92ce6d | 494 | |
48d45d2b ZJS |
495 | case DNS_TYPE_TLSA: |
496 | free(rr->tlsa.data); | |
497 | break; | |
498 | ||
95052df3 ZJS |
499 | case DNS_TYPE_CAA: |
500 | free(rr->caa.tag); | |
501 | free(rr->caa.value); | |
502 | break; | |
503 | ||
d93a16b8 | 504 | case DNS_TYPE_OPENPGPKEY: |
9de3e329 | 505 | default: |
faa133f3 | 506 | free(rr->generic.data); |
9de3e329 | 507 | } |
322345fd | 508 | |
a8812dd7 | 509 | free(rr->wire_format); |
faa133f3 LP |
510 | dns_resource_key_unref(rr->key); |
511 | } | |
322345fd | 512 | |
7b50eb2e | 513 | free(rr->to_string); |
6b430fdb | 514 | return mfree(rr); |
322345fd LP |
515 | } |
516 | ||
623a4c97 LP |
517 | int dns_resource_record_new_reverse(DnsResourceRecord **ret, int family, const union in_addr_union *address, const char *hostname) { |
518 | _cleanup_(dns_resource_key_unrefp) DnsResourceKey *key = NULL; | |
519 | _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL; | |
520 | _cleanup_free_ char *ptr = NULL; | |
521 | int r; | |
522 | ||
523 | assert(ret); | |
524 | assert(address); | |
525 | assert(hostname); | |
526 | ||
527 | r = dns_name_reverse(family, address, &ptr); | |
528 | if (r < 0) | |
529 | return r; | |
530 | ||
531 | key = dns_resource_key_new_consume(DNS_CLASS_IN, DNS_TYPE_PTR, ptr); | |
532 | if (!key) | |
533 | return -ENOMEM; | |
534 | ||
535 | ptr = NULL; | |
536 | ||
537 | rr = dns_resource_record_new(key); | |
538 | if (!rr) | |
539 | return -ENOMEM; | |
540 | ||
541 | rr->ptr.name = strdup(hostname); | |
542 | if (!rr->ptr.name) | |
543 | return -ENOMEM; | |
544 | ||
545 | *ret = rr; | |
546 | rr = NULL; | |
547 | ||
548 | return 0; | |
549 | } | |
550 | ||
78c6a153 LP |
551 | int dns_resource_record_new_address(DnsResourceRecord **ret, int family, const union in_addr_union *address, const char *name) { |
552 | DnsResourceRecord *rr; | |
553 | ||
554 | assert(ret); | |
555 | assert(address); | |
556 | assert(family); | |
557 | ||
558 | if (family == AF_INET) { | |
559 | ||
560 | rr = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_A, name); | |
561 | if (!rr) | |
562 | return -ENOMEM; | |
563 | ||
564 | rr->a.in_addr = address->in; | |
565 | ||
566 | } else if (family == AF_INET6) { | |
567 | ||
568 | rr = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_AAAA, name); | |
569 | if (!rr) | |
570 | return -ENOMEM; | |
571 | ||
572 | rr->aaaa.in6_addr = address->in6; | |
573 | } else | |
574 | return -EAFNOSUPPORT; | |
575 | ||
576 | *ret = rr; | |
577 | ||
578 | return 0; | |
579 | } | |
580 | ||
a43a068a ZJS |
581 | #define FIELD_EQUAL(a, b, field) \ |
582 | ((a).field ## _size == (b).field ## _size && \ | |
583 | memcmp((a).field, (b).field, (a).field ## _size) == 0) | |
584 | ||
322345fd LP |
585 | int dns_resource_record_equal(const DnsResourceRecord *a, const DnsResourceRecord *b) { |
586 | int r; | |
587 | ||
588 | assert(a); | |
589 | assert(b); | |
590 | ||
4d247a6c LP |
591 | if (a == b) |
592 | return 1; | |
593 | ||
faa133f3 | 594 | r = dns_resource_key_equal(a->key, b->key); |
322345fd LP |
595 | if (r <= 0) |
596 | return r; | |
597 | ||
fd0b4602 LP |
598 | if (a->unparseable != b->unparseable) |
599 | return 0; | |
600 | ||
601 | switch (a->unparseable ? _DNS_TYPE_INVALID : a->key->type) { | |
2d4c5cbc | 602 | |
9c92ce6d LP |
603 | case DNS_TYPE_SRV: |
604 | r = dns_name_equal(a->srv.name, b->srv.name); | |
605 | if (r <= 0) | |
606 | return r; | |
607 | ||
608 | return a->srv.priority == b->srv.priority && | |
609 | a->srv.weight == b->srv.weight && | |
610 | a->srv.port == b->srv.port; | |
611 | ||
2d4c5cbc LP |
612 | case DNS_TYPE_PTR: |
613 | case DNS_TYPE_NS: | |
614 | case DNS_TYPE_CNAME: | |
8ac4e9e1 | 615 | case DNS_TYPE_DNAME: |
322345fd | 616 | return dns_name_equal(a->ptr.name, b->ptr.name); |
2d4c5cbc LP |
617 | |
618 | case DNS_TYPE_HINFO: | |
619 | return strcaseeq(a->hinfo.cpu, b->hinfo.cpu) && | |
620 | strcaseeq(a->hinfo.os, b->hinfo.os); | |
621 | ||
9de3e329 | 622 | case DNS_TYPE_SPF: /* exactly the same as TXT */ |
0f84a72e | 623 | case DNS_TYPE_TXT: |
2001c805 | 624 | return dns_txt_item_equal(a->txt.items, b->txt.items); |
2e276efc | 625 | |
2d4c5cbc | 626 | case DNS_TYPE_A: |
322345fd | 627 | return memcmp(&a->a.in_addr, &b->a.in_addr, sizeof(struct in_addr)) == 0; |
2d4c5cbc LP |
628 | |
629 | case DNS_TYPE_AAAA: | |
322345fd | 630 | return memcmp(&a->aaaa.in6_addr, &b->aaaa.in6_addr, sizeof(struct in6_addr)) == 0; |
2d4c5cbc LP |
631 | |
632 | case DNS_TYPE_SOA: | |
7e8e0422 LP |
633 | r = dns_name_equal(a->soa.mname, b->soa.mname); |
634 | if (r <= 0) | |
635 | return r; | |
636 | r = dns_name_equal(a->soa.rname, b->soa.rname); | |
637 | if (r <= 0) | |
638 | return r; | |
639 | ||
640 | return a->soa.serial == b->soa.serial && | |
641 | a->soa.refresh == b->soa.refresh && | |
642 | a->soa.retry == b->soa.retry && | |
643 | a->soa.expire == b->soa.expire && | |
644 | a->soa.minimum == b->soa.minimum; | |
9c92ce6d | 645 | |
946c7094 ZJS |
646 | case DNS_TYPE_MX: |
647 | if (a->mx.priority != b->mx.priority) | |
648 | return 0; | |
649 | ||
650 | return dns_name_equal(a->mx.exchange, b->mx.exchange); | |
651 | ||
0dae31d4 ZJS |
652 | case DNS_TYPE_LOC: |
653 | assert(a->loc.version == b->loc.version); | |
654 | ||
655 | return a->loc.size == b->loc.size && | |
656 | a->loc.horiz_pre == b->loc.horiz_pre && | |
657 | a->loc.vert_pre == b->loc.vert_pre && | |
658 | a->loc.latitude == b->loc.latitude && | |
659 | a->loc.longitude == b->loc.longitude && | |
660 | a->loc.altitude == b->loc.altitude; | |
661 | ||
abf126a3 TG |
662 | case DNS_TYPE_DS: |
663 | return a->ds.key_tag == b->ds.key_tag && | |
664 | a->ds.algorithm == b->ds.algorithm && | |
665 | a->ds.digest_type == b->ds.digest_type && | |
a43a068a | 666 | FIELD_EQUAL(a->ds, b->ds, digest); |
abf126a3 | 667 | |
42cc2eeb LP |
668 | case DNS_TYPE_SSHFP: |
669 | return a->sshfp.algorithm == b->sshfp.algorithm && | |
670 | a->sshfp.fptype == b->sshfp.fptype && | |
a43a068a | 671 | FIELD_EQUAL(a->sshfp, b->sshfp, fingerprint); |
42cc2eeb | 672 | |
8db0d2f5 | 673 | case DNS_TYPE_DNSKEY: |
f91dc240 LP |
674 | return a->dnskey.flags == b->dnskey.flags && |
675 | a->dnskey.protocol == b->dnskey.protocol && | |
8db0d2f5 | 676 | a->dnskey.algorithm == b->dnskey.algorithm && |
a43a068a | 677 | FIELD_EQUAL(a->dnskey, b->dnskey, key); |
8db0d2f5 | 678 | |
151226ab ZJS |
679 | case DNS_TYPE_RRSIG: |
680 | /* do the fast comparisons first */ | |
a43a068a ZJS |
681 | return a->rrsig.type_covered == b->rrsig.type_covered && |
682 | a->rrsig.algorithm == b->rrsig.algorithm && | |
683 | a->rrsig.labels == b->rrsig.labels && | |
684 | a->rrsig.original_ttl == b->rrsig.original_ttl && | |
685 | a->rrsig.expiration == b->rrsig.expiration && | |
686 | a->rrsig.inception == b->rrsig.inception && | |
687 | a->rrsig.key_tag == b->rrsig.key_tag && | |
688 | FIELD_EQUAL(a->rrsig, b->rrsig, signature) && | |
689 | dns_name_equal(a->rrsig.signer, b->rrsig.signer); | |
151226ab | 690 | |
50f1e641 TG |
691 | case DNS_TYPE_NSEC: |
692 | return dns_name_equal(a->nsec.next_domain_name, b->nsec.next_domain_name) && | |
693 | bitmap_equal(a->nsec.types, b->nsec.types); | |
694 | ||
5d45a880 TG |
695 | case DNS_TYPE_NSEC3: |
696 | return a->nsec3.algorithm == b->nsec3.algorithm && | |
a43a068a ZJS |
697 | a->nsec3.flags == b->nsec3.flags && |
698 | a->nsec3.iterations == b->nsec3.iterations && | |
699 | FIELD_EQUAL(a->nsec3, b->nsec3, salt) && | |
700 | FIELD_EQUAL(a->nsec3, b->nsec3, next_hashed_name) && | |
701 | bitmap_equal(a->nsec3.types, b->nsec3.types); | |
5d45a880 | 702 | |
48d45d2b ZJS |
703 | case DNS_TYPE_TLSA: |
704 | return a->tlsa.cert_usage == b->tlsa.cert_usage && | |
705 | a->tlsa.selector == b->tlsa.selector && | |
706 | a->tlsa.matching_type == b->tlsa.matching_type && | |
a43a068a | 707 | FIELD_EQUAL(a->tlsa, b->tlsa, data); |
48d45d2b | 708 | |
95052df3 ZJS |
709 | case DNS_TYPE_CAA: |
710 | return a->caa.flags == b->caa.flags && | |
711 | streq(a->caa.tag, b->caa.tag) && | |
712 | FIELD_EQUAL(a->caa, b->caa, value); | |
713 | ||
714 | case DNS_TYPE_OPENPGPKEY: | |
2d4c5cbc | 715 | default: |
a43a068a | 716 | return FIELD_EQUAL(a->generic, b->generic, data); |
2d4c5cbc | 717 | } |
322345fd LP |
718 | } |
719 | ||
0dae31d4 ZJS |
720 | static char* format_location(uint32_t latitude, uint32_t longitude, uint32_t altitude, |
721 | uint8_t size, uint8_t horiz_pre, uint8_t vert_pre) { | |
722 | char *s; | |
723 | char NS = latitude >= 1U<<31 ? 'N' : 'S'; | |
724 | char EW = longitude >= 1U<<31 ? 'E' : 'W'; | |
725 | ||
726 | int lat = latitude >= 1U<<31 ? (int) (latitude - (1U<<31)) : (int) ((1U<<31) - latitude); | |
727 | int lon = longitude >= 1U<<31 ? (int) (longitude - (1U<<31)) : (int) ((1U<<31) - longitude); | |
728 | double alt = altitude >= 10000000u ? altitude - 10000000u : -(double)(10000000u - altitude); | |
729 | double siz = (size >> 4) * exp10((double) (size & 0xF)); | |
730 | double hor = (horiz_pre >> 4) * exp10((double) (horiz_pre & 0xF)); | |
731 | double ver = (vert_pre >> 4) * exp10((double) (vert_pre & 0xF)); | |
732 | ||
733 | if (asprintf(&s, "%d %d %.3f %c %d %d %.3f %c %.2fm %.2fm %.2fm %.2fm", | |
734 | (lat / 60000 / 60), | |
735 | (lat / 60000) % 60, | |
736 | (lat % 60000) / 1000., | |
737 | NS, | |
738 | (lon / 60000 / 60), | |
739 | (lon / 60000) % 60, | |
740 | (lon % 60000) / 1000., | |
741 | EW, | |
742 | alt / 100., | |
743 | siz / 100., | |
744 | hor / 100., | |
745 | ver / 100.) < 0) | |
746 | return NULL; | |
747 | ||
748 | return s; | |
749 | } | |
750 | ||
7c6423e1 TG |
751 | static int format_timestamp_dns(char *buf, size_t l, time_t sec) { |
752 | struct tm tm; | |
753 | ||
754 | assert(buf); | |
755 | assert(l > strlen("YYYYMMDDHHmmSS")); | |
756 | ||
757 | if (!gmtime_r(&sec, &tm)) | |
758 | return -EINVAL; | |
759 | ||
760 | if (strftime(buf, l, "%Y%m%d%H%M%S", &tm) <= 0) | |
761 | return -EINVAL; | |
762 | ||
763 | return 0; | |
764 | } | |
765 | ||
50f1e641 TG |
766 | static char *format_types(Bitmap *types) { |
767 | _cleanup_strv_free_ char **strv = NULL; | |
768 | _cleanup_free_ char *str = NULL; | |
cb57dd41 | 769 | Iterator i; |
50f1e641 TG |
770 | unsigned type; |
771 | int r; | |
772 | ||
cb57dd41 | 773 | BITMAP_FOREACH(type, types, i) { |
50f1e641 | 774 | if (dns_type_to_string(type)) { |
2c1fb4f7 | 775 | r = strv_extend(&strv, dns_type_to_string(type)); |
50f1e641 TG |
776 | if (r < 0) |
777 | return NULL; | |
778 | } else { | |
779 | char *t; | |
780 | ||
781 | r = asprintf(&t, "TYPE%u", type); | |
782 | if (r < 0) | |
783 | return NULL; | |
784 | ||
2c1fb4f7 | 785 | r = strv_consume(&strv, t); |
50f1e641 TG |
786 | if (r < 0) |
787 | return NULL; | |
788 | } | |
789 | } | |
790 | ||
791 | str = strv_join(strv, " "); | |
792 | if (!str) | |
793 | return NULL; | |
794 | ||
605405c6 | 795 | return strjoin("( ", str, " )"); |
50f1e641 TG |
796 | } |
797 | ||
2001c805 LP |
798 | static char *format_txt(DnsTxtItem *first) { |
799 | DnsTxtItem *i; | |
800 | size_t c = 1; | |
801 | char *p, *s; | |
802 | ||
803 | LIST_FOREACH(items, i, first) | |
804 | c += i->length * 4 + 3; | |
805 | ||
806 | p = s = new(char, c); | |
807 | if (!s) | |
808 | return NULL; | |
809 | ||
810 | LIST_FOREACH(items, i, first) { | |
811 | size_t j; | |
812 | ||
813 | if (i != first) | |
814 | *(p++) = ' '; | |
815 | ||
816 | *(p++) = '"'; | |
817 | ||
818 | for (j = 0; j < i->length; j++) { | |
819 | if (i->data[j] < ' ' || i->data[j] == '"' || i->data[j] >= 127) { | |
820 | *(p++) = '\\'; | |
821 | *(p++) = '0' + (i->data[j] / 100); | |
822 | *(p++) = '0' + ((i->data[j] / 10) % 10); | |
823 | *(p++) = '0' + (i->data[j] % 10); | |
824 | } else | |
825 | *(p++) = i->data[j]; | |
826 | } | |
827 | ||
828 | *(p++) = '"'; | |
829 | } | |
830 | ||
831 | *p = 0; | |
832 | return s; | |
833 | } | |
834 | ||
7b50eb2e | 835 | const char *dns_resource_record_to_string(DnsResourceRecord *rr) { |
202b76ae ZJS |
836 | _cleanup_free_ char *t = NULL; |
837 | char *s, k[DNS_RESOURCE_KEY_STRING_MAX]; | |
2d4c5cbc | 838 | int r; |
322345fd | 839 | |
2d4c5cbc | 840 | assert(rr); |
322345fd | 841 | |
7b50eb2e LP |
842 | if (rr->to_string) |
843 | return rr->to_string; | |
844 | ||
202b76ae | 845 | dns_resource_key_to_string(rr->key, k, sizeof(k)); |
322345fd | 846 | |
0dae31d4 | 847 | switch (rr->unparseable ? _DNS_TYPE_INVALID : rr->key->type) { |
322345fd | 848 | |
9c92ce6d LP |
849 | case DNS_TYPE_SRV: |
850 | r = asprintf(&s, "%s %u %u %u %s", | |
851 | k, | |
852 | rr->srv.priority, | |
853 | rr->srv.weight, | |
854 | rr->srv.port, | |
855 | strna(rr->srv.name)); | |
856 | if (r < 0) | |
7b50eb2e | 857 | return NULL; |
9c92ce6d LP |
858 | break; |
859 | ||
2d4c5cbc LP |
860 | case DNS_TYPE_PTR: |
861 | case DNS_TYPE_NS: | |
862 | case DNS_TYPE_CNAME: | |
8ac4e9e1 | 863 | case DNS_TYPE_DNAME: |
605405c6 | 864 | s = strjoin(k, " ", rr->ptr.name); |
2d4c5cbc | 865 | if (!s) |
7b50eb2e | 866 | return NULL; |
322345fd | 867 | |
2d4c5cbc | 868 | break; |
322345fd | 869 | |
2d4c5cbc | 870 | case DNS_TYPE_HINFO: |
605405c6 | 871 | s = strjoin(k, " ", rr->hinfo.cpu, " ", rr->hinfo.os); |
2d4c5cbc | 872 | if (!s) |
7b50eb2e | 873 | return NULL; |
2d4c5cbc | 874 | break; |
322345fd | 875 | |
9de3e329 | 876 | case DNS_TYPE_SPF: /* exactly the same as TXT */ |
8db0d2f5 | 877 | case DNS_TYPE_TXT: |
2001c805 | 878 | t = format_txt(rr->txt.items); |
2e276efc | 879 | if (!t) |
7b50eb2e | 880 | return NULL; |
2e276efc | 881 | |
605405c6 | 882 | s = strjoin(k, " ", t); |
2e276efc | 883 | if (!s) |
7b50eb2e | 884 | return NULL; |
2e276efc | 885 | break; |
2e276efc | 886 | |
2d4c5cbc LP |
887 | case DNS_TYPE_A: { |
888 | _cleanup_free_ char *x = NULL; | |
322345fd | 889 | |
2d4c5cbc LP |
890 | r = in_addr_to_string(AF_INET, (const union in_addr_union*) &rr->a.in_addr, &x); |
891 | if (r < 0) | |
7b50eb2e | 892 | return NULL; |
322345fd | 893 | |
605405c6 | 894 | s = strjoin(k, " ", x); |
2d4c5cbc | 895 | if (!s) |
7b50eb2e | 896 | return NULL; |
2d4c5cbc LP |
897 | break; |
898 | } | |
322345fd | 899 | |
8db0d2f5 ZJS |
900 | case DNS_TYPE_AAAA: |
901 | r = in_addr_to_string(AF_INET6, (const union in_addr_union*) &rr->aaaa.in6_addr, &t); | |
2d4c5cbc | 902 | if (r < 0) |
7b50eb2e | 903 | return NULL; |
322345fd | 904 | |
605405c6 | 905 | s = strjoin(k, " ", t); |
2d4c5cbc | 906 | if (!s) |
7b50eb2e | 907 | return NULL; |
2d4c5cbc | 908 | break; |
322345fd | 909 | |
2d4c5cbc LP |
910 | case DNS_TYPE_SOA: |
911 | r = asprintf(&s, "%s %s %s %u %u %u %u %u", | |
912 | k, | |
913 | strna(rr->soa.mname), | |
914 | strna(rr->soa.rname), | |
915 | rr->soa.serial, | |
916 | rr->soa.refresh, | |
917 | rr->soa.retry, | |
918 | rr->soa.expire, | |
919 | rr->soa.minimum); | |
920 | if (r < 0) | |
7b50eb2e | 921 | return NULL; |
2d4c5cbc LP |
922 | break; |
923 | ||
946c7094 ZJS |
924 | case DNS_TYPE_MX: |
925 | r = asprintf(&s, "%s %u %s", | |
926 | k, | |
927 | rr->mx.priority, | |
928 | rr->mx.exchange); | |
929 | if (r < 0) | |
7b50eb2e | 930 | return NULL; |
946c7094 ZJS |
931 | break; |
932 | ||
8db0d2f5 | 933 | case DNS_TYPE_LOC: |
0dae31d4 ZJS |
934 | assert(rr->loc.version == 0); |
935 | ||
8db0d2f5 ZJS |
936 | t = format_location(rr->loc.latitude, |
937 | rr->loc.longitude, | |
938 | rr->loc.altitude, | |
939 | rr->loc.size, | |
940 | rr->loc.horiz_pre, | |
941 | rr->loc.vert_pre); | |
942 | if (!t) | |
7b50eb2e | 943 | return NULL; |
0dae31d4 | 944 | |
605405c6 | 945 | s = strjoin(k, " ", t); |
0dae31d4 | 946 | if (!s) |
7b50eb2e | 947 | return NULL; |
0dae31d4 | 948 | break; |
0dae31d4 | 949 | |
abf126a3 TG |
950 | case DNS_TYPE_DS: |
951 | t = hexmem(rr->ds.digest, rr->ds.digest_size); | |
952 | if (!t) | |
7b50eb2e | 953 | return NULL; |
abf126a3 TG |
954 | |
955 | r = asprintf(&s, "%s %u %u %u %s", | |
956 | k, | |
957 | rr->ds.key_tag, | |
958 | rr->ds.algorithm, | |
959 | rr->ds.digest_type, | |
960 | t); | |
961 | if (r < 0) | |
7b50eb2e | 962 | return NULL; |
abf126a3 TG |
963 | break; |
964 | ||
8db0d2f5 | 965 | case DNS_TYPE_SSHFP: |
549c1a25 | 966 | t = hexmem(rr->sshfp.fingerprint, rr->sshfp.fingerprint_size); |
8db0d2f5 | 967 | if (!t) |
7b50eb2e | 968 | return NULL; |
42cc2eeb LP |
969 | |
970 | r = asprintf(&s, "%s %u %u %s", | |
971 | k, | |
972 | rr->sshfp.algorithm, | |
973 | rr->sshfp.fptype, | |
8db0d2f5 | 974 | t); |
42cc2eeb | 975 | if (r < 0) |
7b50eb2e | 976 | return NULL; |
42cc2eeb | 977 | break; |
42cc2eeb | 978 | |
ff3d6560 | 979 | case DNS_TYPE_DNSKEY: { |
8e54f5d9 | 980 | _cleanup_free_ char *alg = NULL; |
99e5ca6d | 981 | char *ss; |
718af59e | 982 | int n; |
fc8eec10 ZJS |
983 | uint16_t key_tag; |
984 | ||
985 | key_tag = dnssec_keytag(rr, true); | |
ff3d6560 | 986 | |
8e54f5d9 LP |
987 | r = dnssec_algorithm_to_string_alloc(rr->dnskey.algorithm, &alg); |
988 | if (r < 0) | |
989 | return NULL; | |
ff3d6560 | 990 | |
718af59e | 991 | r = asprintf(&s, "%s %u %u %s %n", |
8db0d2f5 | 992 | k, |
f91dc240 LP |
993 | rr->dnskey.flags, |
994 | rr->dnskey.protocol, | |
8e54f5d9 | 995 | alg, |
d7671a3e | 996 | &n); |
8db0d2f5 | 997 | if (r < 0) |
7b50eb2e | 998 | return NULL; |
d7671a3e ZJS |
999 | |
1000 | r = base64_append(&s, n, | |
1001 | rr->dnskey.key, rr->dnskey.key_size, | |
1002 | 8, columns()); | |
1003 | if (r < 0) | |
1004 | return NULL; | |
1005 | ||
99e5ca6d | 1006 | r = asprintf(&ss, "%s\n" |
718af59e ZJS |
1007 | " -- Flags:%s%s%s\n" |
1008 | " -- Key tag: %u", | |
99e5ca6d | 1009 | s, |
99e5ca6d ZJS |
1010 | rr->dnskey.flags & DNSKEY_FLAG_SEP ? " SEP" : "", |
1011 | rr->dnskey.flags & DNSKEY_FLAG_REVOKE ? " REVOKE" : "", | |
fc8eec10 | 1012 | rr->dnskey.flags & DNSKEY_FLAG_ZONE_KEY ? " ZONE_KEY" : "", |
fc8eec10 | 1013 | key_tag); |
99e5ca6d ZJS |
1014 | if (r < 0) |
1015 | return NULL; | |
1016 | free(s); | |
1017 | s = ss; | |
1018 | ||
8db0d2f5 | 1019 | break; |
ff3d6560 | 1020 | } |
2d4c5cbc | 1021 | |
151226ab | 1022 | case DNS_TYPE_RRSIG: { |
8e54f5d9 | 1023 | _cleanup_free_ char *alg = NULL; |
7c6423e1 | 1024 | char expiration[strlen("YYYYMMDDHHmmSS") + 1], inception[strlen("YYYYMMDDHHmmSS") + 1]; |
8e54f5d9 | 1025 | const char *type; |
d7671a3e | 1026 | int n; |
151226ab ZJS |
1027 | |
1028 | type = dns_type_to_string(rr->rrsig.type_covered); | |
8e54f5d9 LP |
1029 | |
1030 | r = dnssec_algorithm_to_string_alloc(rr->rrsig.algorithm, &alg); | |
1031 | if (r < 0) | |
1032 | return NULL; | |
151226ab | 1033 | |
7c6423e1 TG |
1034 | r = format_timestamp_dns(expiration, sizeof(expiration), rr->rrsig.expiration); |
1035 | if (r < 0) | |
7b50eb2e | 1036 | return NULL; |
7c6423e1 TG |
1037 | |
1038 | r = format_timestamp_dns(inception, sizeof(inception), rr->rrsig.inception); | |
1039 | if (r < 0) | |
7b50eb2e | 1040 | return NULL; |
7c6423e1 | 1041 | |
151226ab ZJS |
1042 | /* TYPE?? follows |
1043 | * http://tools.ietf.org/html/rfc3597#section-5 */ | |
1044 | ||
d7671a3e | 1045 | r = asprintf(&s, "%s %s%.*u %s %u %u %s %s %u %s %n", |
151226ab ZJS |
1046 | k, |
1047 | type ?: "TYPE", | |
1048 | type ? 0 : 1, type ? 0u : (unsigned) rr->rrsig.type_covered, | |
8e54f5d9 | 1049 | alg, |
151226ab ZJS |
1050 | rr->rrsig.labels, |
1051 | rr->rrsig.original_ttl, | |
7c6423e1 TG |
1052 | expiration, |
1053 | inception, | |
151226ab ZJS |
1054 | rr->rrsig.key_tag, |
1055 | rr->rrsig.signer, | |
d7671a3e | 1056 | &n); |
151226ab | 1057 | if (r < 0) |
7b50eb2e | 1058 | return NULL; |
d7671a3e ZJS |
1059 | |
1060 | r = base64_append(&s, n, | |
1061 | rr->rrsig.signature, rr->rrsig.signature_size, | |
1062 | 8, columns()); | |
1063 | if (r < 0) | |
1064 | return NULL; | |
1065 | ||
151226ab ZJS |
1066 | break; |
1067 | } | |
1068 | ||
50f1e641 TG |
1069 | case DNS_TYPE_NSEC: |
1070 | t = format_types(rr->nsec.types); | |
1071 | if (!t) | |
7b50eb2e | 1072 | return NULL; |
50f1e641 TG |
1073 | |
1074 | r = asprintf(&s, "%s %s %s", | |
1075 | k, | |
1076 | rr->nsec.next_domain_name, | |
1077 | t); | |
1078 | if (r < 0) | |
7b50eb2e | 1079 | return NULL; |
50f1e641 TG |
1080 | break; |
1081 | ||
5d45a880 TG |
1082 | case DNS_TYPE_NSEC3: { |
1083 | _cleanup_free_ char *salt = NULL, *hash = NULL; | |
1084 | ||
f5430a3e | 1085 | if (rr->nsec3.salt_size > 0) { |
5d45a880 TG |
1086 | salt = hexmem(rr->nsec3.salt, rr->nsec3.salt_size); |
1087 | if (!salt) | |
7b50eb2e | 1088 | return NULL; |
5d45a880 TG |
1089 | } |
1090 | ||
1091 | hash = base32hexmem(rr->nsec3.next_hashed_name, rr->nsec3.next_hashed_name_size, false); | |
1092 | if (!hash) | |
7b50eb2e | 1093 | return NULL; |
5d45a880 TG |
1094 | |
1095 | t = format_types(rr->nsec3.types); | |
1096 | if (!t) | |
7b50eb2e | 1097 | return NULL; |
5d45a880 TG |
1098 | |
1099 | r = asprintf(&s, "%s %"PRIu8" %"PRIu8" %"PRIu16" %s %s %s", | |
1100 | k, | |
1101 | rr->nsec3.algorithm, | |
1102 | rr->nsec3.flags, | |
1103 | rr->nsec3.iterations, | |
f5430a3e | 1104 | rr->nsec3.salt_size > 0 ? salt : "-", |
5d45a880 TG |
1105 | hash, |
1106 | t); | |
1107 | if (r < 0) | |
7b50eb2e | 1108 | return NULL; |
5d45a880 TG |
1109 | |
1110 | break; | |
1111 | } | |
1112 | ||
48d45d2b | 1113 | case DNS_TYPE_TLSA: { |
cfb90da3 | 1114 | const char *cert_usage, *selector, *matching_type; |
48d45d2b | 1115 | |
cfb90da3 ZJS |
1116 | cert_usage = tlsa_cert_usage_to_string(rr->tlsa.cert_usage); |
1117 | selector = tlsa_selector_to_string(rr->tlsa.selector); | |
1118 | matching_type = tlsa_matching_type_to_string(rr->tlsa.matching_type); | |
1119 | ||
236d312b ZJS |
1120 | t = hexmem(rr->sshfp.fingerprint, rr->sshfp.fingerprint_size); |
1121 | if (!t) | |
48d45d2b | 1122 | return NULL; |
cfb90da3 | 1123 | |
236d312b ZJS |
1124 | r = asprintf(&s, |
1125 | "%s %u %u %u %s\n" | |
718af59e ZJS |
1126 | " -- Cert. usage: %s\n" |
1127 | " -- Selector: %s\n" | |
1128 | " -- Matching type: %s", | |
236d312b ZJS |
1129 | k, |
1130 | rr->tlsa.cert_usage, | |
1131 | rr->tlsa.selector, | |
1132 | rr->tlsa.matching_type, | |
1133 | t, | |
718af59e ZJS |
1134 | cert_usage, |
1135 | selector, | |
1136 | matching_type); | |
cfb90da3 ZJS |
1137 | if (r < 0) |
1138 | return NULL; | |
cfb90da3 | 1139 | |
48d45d2b ZJS |
1140 | break; |
1141 | } | |
1142 | ||
95052df3 ZJS |
1143 | case DNS_TYPE_CAA: { |
1144 | _cleanup_free_ char *value; | |
1145 | ||
1146 | value = octescape(rr->caa.value, rr->caa.value_size); | |
1147 | if (!value) | |
1148 | return NULL; | |
1149 | ||
718af59e | 1150 | r = asprintf(&s, "%s %u %s \"%s\"%s%s%s%.0u", |
95052df3 ZJS |
1151 | k, |
1152 | rr->caa.flags, | |
1153 | rr->caa.tag, | |
718af59e ZJS |
1154 | value, |
1155 | rr->caa.flags ? "\n -- Flags:" : "", | |
1156 | rr->caa.flags & CAA_FLAG_CRITICAL ? " critical" : "", | |
1157 | rr->caa.flags & ~CAA_FLAG_CRITICAL ? " " : "", | |
1158 | rr->caa.flags & ~CAA_FLAG_CRITICAL); | |
95052df3 ZJS |
1159 | if (r < 0) |
1160 | return NULL; | |
1161 | ||
1162 | break; | |
1163 | } | |
1164 | ||
d93a16b8 ZJS |
1165 | case DNS_TYPE_OPENPGPKEY: { |
1166 | int n; | |
1167 | ||
1168 | r = asprintf(&s, "%s %n", | |
1169 | k, | |
1170 | &n); | |
1171 | if (r < 0) | |
1172 | return NULL; | |
1173 | ||
1174 | r = base64_append(&s, n, | |
a43a068a | 1175 | rr->generic.data, rr->generic.data_size, |
d93a16b8 ZJS |
1176 | 8, columns()); |
1177 | if (r < 0) | |
1178 | return NULL; | |
1179 | break; | |
1180 | } | |
1181 | ||
8db0d2f5 | 1182 | default: |
a43a068a | 1183 | t = hexmem(rr->generic.data, rr->generic.data_size); |
8db0d2f5 | 1184 | if (!t) |
7b50eb2e | 1185 | return NULL; |
8db0d2f5 | 1186 | |
6af47493 | 1187 | /* Format as documented in RFC 3597, Section 5 */ |
a43a068a | 1188 | r = asprintf(&s, "%s \\# %zu %s", k, rr->generic.data_size, t); |
d23a27a9 | 1189 | if (r < 0) |
7b50eb2e | 1190 | return NULL; |
2d4c5cbc | 1191 | break; |
8db0d2f5 | 1192 | } |
2d4c5cbc | 1193 | |
7b50eb2e LP |
1194 | rr->to_string = s; |
1195 | return s; | |
2d4c5cbc | 1196 | } |
322345fd | 1197 | |
2e74028a ZJS |
1198 | ssize_t dns_resource_record_payload(DnsResourceRecord *rr, void **out) { |
1199 | assert(rr); | |
1200 | assert(out); | |
1201 | ||
1202 | switch(rr->unparseable ? _DNS_TYPE_INVALID : rr->key->type) { | |
1203 | case DNS_TYPE_SRV: | |
1204 | case DNS_TYPE_PTR: | |
1205 | case DNS_TYPE_NS: | |
1206 | case DNS_TYPE_CNAME: | |
1207 | case DNS_TYPE_DNAME: | |
1208 | case DNS_TYPE_HINFO: | |
1209 | case DNS_TYPE_SPF: | |
1210 | case DNS_TYPE_TXT: | |
1211 | case DNS_TYPE_A: | |
1212 | case DNS_TYPE_AAAA: | |
1213 | case DNS_TYPE_SOA: | |
1214 | case DNS_TYPE_MX: | |
1215 | case DNS_TYPE_LOC: | |
1216 | case DNS_TYPE_DS: | |
2e74028a ZJS |
1217 | case DNS_TYPE_DNSKEY: |
1218 | case DNS_TYPE_RRSIG: | |
1219 | case DNS_TYPE_NSEC: | |
1220 | case DNS_TYPE_NSEC3: | |
1221 | return -EINVAL; | |
1222 | ||
e1caa6e0 ZJS |
1223 | case DNS_TYPE_SSHFP: |
1224 | *out = rr->sshfp.fingerprint; | |
1225 | return rr->sshfp.fingerprint_size; | |
1226 | ||
2e74028a ZJS |
1227 | case DNS_TYPE_TLSA: |
1228 | *out = rr->tlsa.data; | |
1229 | return rr->tlsa.data_size; | |
1230 | ||
1231 | ||
1232 | case DNS_TYPE_OPENPGPKEY: | |
1233 | default: | |
1234 | *out = rr->generic.data; | |
1235 | return rr->generic.data_size; | |
1236 | } | |
1237 | } | |
1238 | ||
a8812dd7 LP |
1239 | int dns_resource_record_to_wire_format(DnsResourceRecord *rr, bool canonical) { |
1240 | ||
1241 | DnsPacket packet = { | |
1242 | .n_ref = 1, | |
1243 | .protocol = DNS_PROTOCOL_DNS, | |
1244 | .on_stack = true, | |
1245 | .refuse_compression = true, | |
1246 | .canonical_form = canonical, | |
1247 | }; | |
1248 | ||
1249 | size_t start, rds; | |
1250 | int r; | |
1251 | ||
1252 | assert(rr); | |
1253 | ||
1254 | /* Generates the RR in wire-format, optionally in the | |
1255 | * canonical form as discussed in the DNSSEC RFC 4034, Section | |
1256 | * 6.2. We allocate a throw-away DnsPacket object on the stack | |
1257 | * here, because we need some book-keeping for memory | |
1258 | * management, and can reuse the DnsPacket serializer, that | |
1259 | * can generate the canonical form, too, but also knows label | |
1260 | * compression and suchlike. */ | |
1261 | ||
1262 | if (rr->wire_format && rr->wire_format_canonical == canonical) | |
1263 | return 0; | |
1264 | ||
58ab31d5 | 1265 | r = dns_packet_append_rr(&packet, rr, 0, &start, &rds); |
a8812dd7 LP |
1266 | if (r < 0) |
1267 | return r; | |
1268 | ||
1269 | assert(start == 0); | |
1270 | assert(packet._data); | |
1271 | ||
1272 | free(rr->wire_format); | |
1273 | rr->wire_format = packet._data; | |
1274 | rr->wire_format_size = packet.size; | |
1275 | rr->wire_format_rdata_offset = rds; | |
1276 | rr->wire_format_canonical = canonical; | |
1277 | ||
1278 | packet._data = NULL; | |
1279 | dns_packet_unref(&packet); | |
1280 | ||
1281 | return 0; | |
1282 | } | |
1283 | ||
97c67192 LP |
1284 | int dns_resource_record_signer(DnsResourceRecord *rr, const char **ret) { |
1285 | const char *n; | |
1286 | int r; | |
1287 | ||
1288 | assert(rr); | |
1289 | assert(ret); | |
1290 | ||
1291 | /* Returns the RRset's signer, if it is known. */ | |
1292 | ||
1293 | if (rr->n_skip_labels_signer == (unsigned) -1) | |
1294 | return -ENODATA; | |
1295 | ||
1c02e7ba | 1296 | n = dns_resource_key_name(rr->key); |
97c67192 LP |
1297 | r = dns_name_skip(n, rr->n_skip_labels_signer, &n); |
1298 | if (r < 0) | |
1299 | return r; | |
1300 | if (r == 0) | |
1301 | return -EINVAL; | |
1302 | ||
1303 | *ret = n; | |
1304 | return 0; | |
1305 | } | |
1306 | ||
1307 | int dns_resource_record_source(DnsResourceRecord *rr, const char **ret) { | |
1308 | const char *n; | |
1309 | int r; | |
1310 | ||
1311 | assert(rr); | |
1312 | assert(ret); | |
1313 | ||
1314 | /* Returns the RRset's synthesizing source, if it is known. */ | |
1315 | ||
1316 | if (rr->n_skip_labels_source == (unsigned) -1) | |
1317 | return -ENODATA; | |
1318 | ||
1c02e7ba | 1319 | n = dns_resource_key_name(rr->key); |
97c67192 LP |
1320 | r = dns_name_skip(n, rr->n_skip_labels_source, &n); |
1321 | if (r < 0) | |
1322 | return r; | |
1323 | if (r == 0) | |
1324 | return -EINVAL; | |
1325 | ||
1326 | *ret = n; | |
1327 | return 0; | |
1328 | } | |
1329 | ||
1330 | int dns_resource_record_is_signer(DnsResourceRecord *rr, const char *zone) { | |
1331 | const char *signer; | |
1332 | int r; | |
1333 | ||
ab481675 LP |
1334 | assert(rr); |
1335 | ||
97c67192 LP |
1336 | r = dns_resource_record_signer(rr, &signer); |
1337 | if (r < 0) | |
1338 | return r; | |
1339 | ||
1340 | return dns_name_equal(zone, signer); | |
1341 | } | |
1342 | ||
ab481675 LP |
1343 | int dns_resource_record_is_synthetic(DnsResourceRecord *rr) { |
1344 | int r; | |
1345 | ||
1346 | assert(rr); | |
1347 | ||
1348 | /* Returns > 0 if the RR is generated from a wildcard, and is not the asterisk name itself */ | |
1349 | ||
1350 | if (rr->n_skip_labels_source == (unsigned) -1) | |
1351 | return -ENODATA; | |
1352 | ||
1353 | if (rr->n_skip_labels_source == 0) | |
1354 | return 0; | |
1355 | ||
1356 | if (rr->n_skip_labels_source > 1) | |
1357 | return 1; | |
1358 | ||
1c02e7ba | 1359 | r = dns_name_startswith(dns_resource_key_name(rr->key), "*"); |
ab481675 LP |
1360 | if (r < 0) |
1361 | return r; | |
1362 | ||
1363 | return !r; | |
1364 | } | |
1365 | ||
6d99904f | 1366 | void dns_resource_record_hash_func(const void *i, struct siphash *state) { |
c9c72065 LP |
1367 | const DnsResourceRecord *rr = i; |
1368 | ||
1369 | assert(rr); | |
1370 | ||
1371 | dns_resource_key_hash_func(rr->key, state); | |
1372 | ||
1373 | switch (rr->unparseable ? _DNS_TYPE_INVALID : rr->key->type) { | |
1374 | ||
1375 | case DNS_TYPE_SRV: | |
1376 | siphash24_compress(&rr->srv.priority, sizeof(rr->srv.priority), state); | |
1377 | siphash24_compress(&rr->srv.weight, sizeof(rr->srv.weight), state); | |
1378 | siphash24_compress(&rr->srv.port, sizeof(rr->srv.port), state); | |
1379 | dns_name_hash_func(rr->srv.name, state); | |
1380 | break; | |
1381 | ||
1382 | case DNS_TYPE_PTR: | |
1383 | case DNS_TYPE_NS: | |
1384 | case DNS_TYPE_CNAME: | |
1385 | case DNS_TYPE_DNAME: | |
1386 | dns_name_hash_func(rr->ptr.name, state); | |
1387 | break; | |
1388 | ||
1389 | case DNS_TYPE_HINFO: | |
1390 | string_hash_func(rr->hinfo.cpu, state); | |
1391 | string_hash_func(rr->hinfo.os, state); | |
1392 | break; | |
1393 | ||
1394 | case DNS_TYPE_TXT: | |
1395 | case DNS_TYPE_SPF: { | |
1396 | DnsTxtItem *j; | |
1397 | ||
1398 | LIST_FOREACH(items, j, rr->txt.items) { | |
1399 | siphash24_compress(j->data, j->length, state); | |
1400 | ||
d5115566 LP |
1401 | /* Add an extra NUL byte, so that "a" followed by "b" doesn't result in the same hash as "ab" |
1402 | * followed by "". */ | |
1403 | siphash24_compress_byte(0, state); | |
c9c72065 LP |
1404 | } |
1405 | break; | |
1406 | } | |
1407 | ||
1408 | case DNS_TYPE_A: | |
1409 | siphash24_compress(&rr->a.in_addr, sizeof(rr->a.in_addr), state); | |
1410 | break; | |
1411 | ||
1412 | case DNS_TYPE_AAAA: | |
1413 | siphash24_compress(&rr->aaaa.in6_addr, sizeof(rr->aaaa.in6_addr), state); | |
1414 | break; | |
1415 | ||
1416 | case DNS_TYPE_SOA: | |
1417 | dns_name_hash_func(rr->soa.mname, state); | |
1418 | dns_name_hash_func(rr->soa.rname, state); | |
1419 | siphash24_compress(&rr->soa.serial, sizeof(rr->soa.serial), state); | |
1420 | siphash24_compress(&rr->soa.refresh, sizeof(rr->soa.refresh), state); | |
1421 | siphash24_compress(&rr->soa.retry, sizeof(rr->soa.retry), state); | |
1422 | siphash24_compress(&rr->soa.expire, sizeof(rr->soa.expire), state); | |
1423 | siphash24_compress(&rr->soa.minimum, sizeof(rr->soa.minimum), state); | |
1424 | break; | |
1425 | ||
1426 | case DNS_TYPE_MX: | |
1427 | siphash24_compress(&rr->mx.priority, sizeof(rr->mx.priority), state); | |
1428 | dns_name_hash_func(rr->mx.exchange, state); | |
1429 | break; | |
1430 | ||
1431 | case DNS_TYPE_LOC: | |
1432 | siphash24_compress(&rr->loc.version, sizeof(rr->loc.version), state); | |
1433 | siphash24_compress(&rr->loc.size, sizeof(rr->loc.size), state); | |
1434 | siphash24_compress(&rr->loc.horiz_pre, sizeof(rr->loc.horiz_pre), state); | |
1435 | siphash24_compress(&rr->loc.vert_pre, sizeof(rr->loc.vert_pre), state); | |
1436 | siphash24_compress(&rr->loc.latitude, sizeof(rr->loc.latitude), state); | |
1437 | siphash24_compress(&rr->loc.longitude, sizeof(rr->loc.longitude), state); | |
1438 | siphash24_compress(&rr->loc.altitude, sizeof(rr->loc.altitude), state); | |
1439 | break; | |
1440 | ||
1441 | case DNS_TYPE_SSHFP: | |
1442 | siphash24_compress(&rr->sshfp.algorithm, sizeof(rr->sshfp.algorithm), state); | |
1443 | siphash24_compress(&rr->sshfp.fptype, sizeof(rr->sshfp.fptype), state); | |
1444 | siphash24_compress(rr->sshfp.fingerprint, rr->sshfp.fingerprint_size, state); | |
1445 | break; | |
1446 | ||
1447 | case DNS_TYPE_DNSKEY: | |
1448 | siphash24_compress(&rr->dnskey.flags, sizeof(rr->dnskey.flags), state); | |
1449 | siphash24_compress(&rr->dnskey.protocol, sizeof(rr->dnskey.protocol), state); | |
1450 | siphash24_compress(&rr->dnskey.algorithm, sizeof(rr->dnskey.algorithm), state); | |
1451 | siphash24_compress(rr->dnskey.key, rr->dnskey.key_size, state); | |
1452 | break; | |
1453 | ||
1454 | case DNS_TYPE_RRSIG: | |
1455 | siphash24_compress(&rr->rrsig.type_covered, sizeof(rr->rrsig.type_covered), state); | |
1456 | siphash24_compress(&rr->rrsig.algorithm, sizeof(rr->rrsig.algorithm), state); | |
1457 | siphash24_compress(&rr->rrsig.labels, sizeof(rr->rrsig.labels), state); | |
1458 | siphash24_compress(&rr->rrsig.original_ttl, sizeof(rr->rrsig.original_ttl), state); | |
1459 | siphash24_compress(&rr->rrsig.expiration, sizeof(rr->rrsig.expiration), state); | |
1460 | siphash24_compress(&rr->rrsig.inception, sizeof(rr->rrsig.inception), state); | |
1461 | siphash24_compress(&rr->rrsig.key_tag, sizeof(rr->rrsig.key_tag), state); | |
1462 | dns_name_hash_func(rr->rrsig.signer, state); | |
1463 | siphash24_compress(rr->rrsig.signature, rr->rrsig.signature_size, state); | |
1464 | break; | |
1465 | ||
1466 | case DNS_TYPE_NSEC: | |
1467 | dns_name_hash_func(rr->nsec.next_domain_name, state); | |
1468 | /* FIXME: we leave out the type bitmap here. Hash | |
1469 | * would be better if we'd take it into account | |
1470 | * too. */ | |
1471 | break; | |
1472 | ||
1473 | case DNS_TYPE_DS: | |
1474 | siphash24_compress(&rr->ds.key_tag, sizeof(rr->ds.key_tag), state); | |
1475 | siphash24_compress(&rr->ds.algorithm, sizeof(rr->ds.algorithm), state); | |
1476 | siphash24_compress(&rr->ds.digest_type, sizeof(rr->ds.digest_type), state); | |
1477 | siphash24_compress(rr->ds.digest, rr->ds.digest_size, state); | |
1478 | break; | |
1479 | ||
1480 | case DNS_TYPE_NSEC3: | |
1481 | siphash24_compress(&rr->nsec3.algorithm, sizeof(rr->nsec3.algorithm), state); | |
1482 | siphash24_compress(&rr->nsec3.flags, sizeof(rr->nsec3.flags), state); | |
1483 | siphash24_compress(&rr->nsec3.iterations, sizeof(rr->nsec3.iterations), state); | |
1484 | siphash24_compress(rr->nsec3.salt, rr->nsec3.salt_size, state); | |
1485 | siphash24_compress(rr->nsec3.next_hashed_name, rr->nsec3.next_hashed_name_size, state); | |
1486 | /* FIXME: We leave the bitmaps out */ | |
1487 | break; | |
48d45d2b ZJS |
1488 | |
1489 | case DNS_TYPE_TLSA: | |
1490 | siphash24_compress(&rr->tlsa.cert_usage, sizeof(rr->tlsa.cert_usage), state); | |
1491 | siphash24_compress(&rr->tlsa.selector, sizeof(rr->tlsa.selector), state); | |
1492 | siphash24_compress(&rr->tlsa.matching_type, sizeof(rr->tlsa.matching_type), state); | |
fa45182e | 1493 | siphash24_compress(rr->tlsa.data, rr->tlsa.data_size, state); |
48d45d2b | 1494 | break; |
c9c72065 | 1495 | |
95052df3 ZJS |
1496 | case DNS_TYPE_CAA: |
1497 | siphash24_compress(&rr->caa.flags, sizeof(rr->caa.flags), state); | |
1498 | string_hash_func(rr->caa.tag, state); | |
1499 | siphash24_compress(rr->caa.value, rr->caa.value_size, state); | |
48d45d2b | 1500 | break; |
c9c72065 | 1501 | |
d93a16b8 | 1502 | case DNS_TYPE_OPENPGPKEY: |
c9c72065 | 1503 | default: |
a43a068a | 1504 | siphash24_compress(rr->generic.data, rr->generic.data_size, state); |
c9c72065 LP |
1505 | break; |
1506 | } | |
1507 | } | |
1508 | ||
1509 | static int dns_resource_record_compare_func(const void *a, const void *b) { | |
1510 | const DnsResourceRecord *x = a, *y = b; | |
1511 | int ret; | |
1512 | ||
1513 | ret = dns_resource_key_compare_func(x->key, y->key); | |
1514 | if (ret != 0) | |
1515 | return ret; | |
1516 | ||
1517 | if (dns_resource_record_equal(x, y)) | |
1518 | return 0; | |
1519 | ||
1f133e0d | 1520 | /* This is a bit dirty, we don't implement proper ordering, but |
c9c72065 LP |
1521 | * the hashtable doesn't need ordering anyway, hence we don't |
1522 | * care. */ | |
1523 | return x < y ? -1 : 1; | |
1524 | } | |
1525 | ||
1526 | const struct hash_ops dns_resource_record_hash_ops = { | |
1527 | .hash = dns_resource_record_hash_func, | |
1528 | .compare = dns_resource_record_compare_func, | |
1529 | }; | |
1530 | ||
17c8de63 LP |
1531 | DnsResourceRecord *dns_resource_record_copy(DnsResourceRecord *rr) { |
1532 | _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *copy = NULL; | |
1533 | DnsResourceRecord *t; | |
1534 | ||
1535 | assert(rr); | |
1536 | ||
1537 | copy = dns_resource_record_new(rr->key); | |
1538 | if (!copy) | |
1539 | return NULL; | |
1540 | ||
1541 | copy->ttl = rr->ttl; | |
1542 | copy->expiry = rr->expiry; | |
1543 | copy->n_skip_labels_signer = rr->n_skip_labels_signer; | |
1544 | copy->n_skip_labels_source = rr->n_skip_labels_source; | |
1545 | copy->unparseable = rr->unparseable; | |
1546 | ||
1547 | switch (rr->unparseable ? _DNS_TYPE_INVALID : rr->key->type) { | |
1548 | ||
1549 | case DNS_TYPE_SRV: | |
1550 | copy->srv.priority = rr->srv.priority; | |
1551 | copy->srv.weight = rr->srv.weight; | |
1552 | copy->srv.port = rr->srv.port; | |
1553 | copy->srv.name = strdup(rr->srv.name); | |
1554 | if (!copy->srv.name) | |
1555 | return NULL; | |
1556 | break; | |
1557 | ||
1558 | case DNS_TYPE_PTR: | |
1559 | case DNS_TYPE_NS: | |
1560 | case DNS_TYPE_CNAME: | |
1561 | case DNS_TYPE_DNAME: | |
1562 | copy->ptr.name = strdup(rr->ptr.name); | |
1563 | if (!copy->ptr.name) | |
1564 | return NULL; | |
1565 | break; | |
1566 | ||
1567 | case DNS_TYPE_HINFO: | |
1568 | copy->hinfo.cpu = strdup(rr->hinfo.cpu); | |
1569 | if (!copy->hinfo.cpu) | |
1570 | return NULL; | |
1571 | ||
1572 | copy->hinfo.os = strdup(rr->hinfo.os); | |
1573 | if(!copy->hinfo.os) | |
1574 | return NULL; | |
1575 | break; | |
1576 | ||
1577 | case DNS_TYPE_TXT: | |
1578 | case DNS_TYPE_SPF: | |
1579 | copy->txt.items = dns_txt_item_copy(rr->txt.items); | |
1580 | if (!copy->txt.items) | |
1581 | return NULL; | |
1582 | break; | |
1583 | ||
1584 | case DNS_TYPE_A: | |
1585 | copy->a = rr->a; | |
1586 | break; | |
1587 | ||
1588 | case DNS_TYPE_AAAA: | |
1589 | copy->aaaa = rr->aaaa; | |
1590 | break; | |
1591 | ||
1592 | case DNS_TYPE_SOA: | |
1593 | copy->soa.mname = strdup(rr->soa.mname); | |
1594 | if (!copy->soa.mname) | |
1595 | return NULL; | |
1596 | copy->soa.rname = strdup(rr->soa.rname); | |
1597 | if (!copy->soa.rname) | |
1598 | return NULL; | |
1599 | copy->soa.serial = rr->soa.serial; | |
1600 | copy->soa.refresh = rr->soa.refresh; | |
1601 | copy->soa.retry = rr->soa.retry; | |
1602 | copy->soa.expire = rr->soa.expire; | |
1603 | copy->soa.minimum = rr->soa.minimum; | |
1604 | break; | |
1605 | ||
1606 | case DNS_TYPE_MX: | |
1607 | copy->mx.priority = rr->mx.priority; | |
1608 | copy->mx.exchange = strdup(rr->mx.exchange); | |
1609 | if (!copy->mx.exchange) | |
1610 | return NULL; | |
1611 | break; | |
1612 | ||
1613 | case DNS_TYPE_LOC: | |
1614 | copy->loc = rr->loc; | |
1615 | break; | |
1616 | ||
1617 | case DNS_TYPE_SSHFP: | |
1618 | copy->sshfp.algorithm = rr->sshfp.algorithm; | |
1619 | copy->sshfp.fptype = rr->sshfp.fptype; | |
1620 | copy->sshfp.fingerprint = memdup(rr->sshfp.fingerprint, rr->sshfp.fingerprint_size); | |
1621 | if (!copy->sshfp.fingerprint) | |
1622 | return NULL; | |
1623 | copy->sshfp.fingerprint_size = rr->sshfp.fingerprint_size; | |
1624 | break; | |
1625 | ||
1626 | case DNS_TYPE_DNSKEY: | |
1627 | copy->dnskey.flags = rr->dnskey.flags; | |
1628 | copy->dnskey.protocol = rr->dnskey.protocol; | |
1629 | copy->dnskey.algorithm = rr->dnskey.algorithm; | |
1630 | copy->dnskey.key = memdup(rr->dnskey.key, rr->dnskey.key_size); | |
1631 | if (!copy->dnskey.key) | |
1632 | return NULL; | |
1633 | copy->dnskey.key_size = rr->dnskey.key_size; | |
1634 | break; | |
1635 | ||
1636 | case DNS_TYPE_RRSIG: | |
1637 | copy->rrsig.type_covered = rr->rrsig.type_covered; | |
1638 | copy->rrsig.algorithm = rr->rrsig.algorithm; | |
1639 | copy->rrsig.labels = rr->rrsig.labels; | |
1640 | copy->rrsig.original_ttl = rr->rrsig.original_ttl; | |
1641 | copy->rrsig.expiration = rr->rrsig.expiration; | |
1642 | copy->rrsig.inception = rr->rrsig.inception; | |
1643 | copy->rrsig.key_tag = rr->rrsig.key_tag; | |
1644 | copy->rrsig.signer = strdup(rr->rrsig.signer); | |
1645 | if (!copy->rrsig.signer) | |
1646 | return NULL; | |
1647 | copy->rrsig.signature = memdup(rr->rrsig.signature, rr->rrsig.signature_size); | |
1648 | if (!copy->rrsig.signature) | |
1649 | return NULL; | |
1650 | copy->rrsig.signature_size = rr->rrsig.signature_size; | |
1651 | break; | |
1652 | ||
1653 | case DNS_TYPE_NSEC: | |
1654 | copy->nsec.next_domain_name = strdup(rr->nsec.next_domain_name); | |
1655 | if (!copy->nsec.next_domain_name) | |
1656 | return NULL; | |
1657 | copy->nsec.types = bitmap_copy(rr->nsec.types); | |
1658 | if (!copy->nsec.types) | |
1659 | return NULL; | |
1660 | break; | |
1661 | ||
1662 | case DNS_TYPE_DS: | |
1663 | copy->ds.key_tag = rr->ds.key_tag; | |
1664 | copy->ds.algorithm = rr->ds.algorithm; | |
1665 | copy->ds.digest_type = rr->ds.digest_type; | |
1666 | copy->ds.digest = memdup(rr->ds.digest, rr->ds.digest_size); | |
1667 | if (!copy->ds.digest) | |
1668 | return NULL; | |
1669 | copy->ds.digest_size = rr->ds.digest_size; | |
1670 | break; | |
1671 | ||
1672 | case DNS_TYPE_NSEC3: | |
1673 | copy->nsec3.algorithm = rr->nsec3.algorithm; | |
1674 | copy->nsec3.flags = rr->nsec3.flags; | |
1675 | copy->nsec3.iterations = rr->nsec3.iterations; | |
1676 | copy->nsec3.salt = memdup(rr->nsec3.salt, rr->nsec3.salt_size); | |
1677 | if (!copy->nsec3.salt) | |
1678 | return NULL; | |
1679 | copy->nsec3.salt_size = rr->nsec3.salt_size; | |
1680 | copy->nsec3.next_hashed_name = memdup(rr->nsec3.next_hashed_name, rr->nsec3.next_hashed_name_size); | |
1681 | if (!copy->nsec3.next_hashed_name_size) | |
1682 | return NULL; | |
1683 | copy->nsec3.next_hashed_name_size = rr->nsec3.next_hashed_name_size; | |
1684 | copy->nsec3.types = bitmap_copy(rr->nsec3.types); | |
1685 | if (!copy->nsec3.types) | |
1686 | return NULL; | |
1687 | break; | |
1688 | ||
1689 | case DNS_TYPE_TLSA: | |
1690 | copy->tlsa.cert_usage = rr->tlsa.cert_usage; | |
1691 | copy->tlsa.selector = rr->tlsa.selector; | |
1692 | copy->tlsa.matching_type = rr->tlsa.matching_type; | |
1693 | copy->tlsa.data = memdup(rr->tlsa.data, rr->tlsa.data_size); | |
1694 | if (!copy->tlsa.data) | |
1695 | return NULL; | |
1696 | copy->tlsa.data_size = rr->tlsa.data_size; | |
1697 | break; | |
1698 | ||
1699 | case DNS_TYPE_CAA: | |
1700 | copy->caa.flags = rr->caa.flags; | |
1701 | copy->caa.tag = strdup(rr->caa.tag); | |
1702 | if (!copy->caa.tag) | |
1703 | return NULL; | |
1704 | copy->caa.value = memdup(rr->caa.value, rr->caa.value_size); | |
1705 | if (!copy->caa.value) | |
1706 | return NULL; | |
1707 | copy->caa.value_size = rr->caa.value_size; | |
1708 | break; | |
1709 | ||
1710 | case DNS_TYPE_OPT: | |
1711 | default: | |
1712 | copy->generic.data = memdup(rr->generic.data, rr->generic.data_size); | |
1713 | if (!copy->generic.data) | |
1714 | return NULL; | |
1715 | copy->generic.data_size = rr->generic.data_size; | |
1716 | break; | |
1717 | } | |
1718 | ||
1719 | t = copy; | |
1720 | copy = NULL; | |
1721 | ||
1722 | return t; | |
1723 | } | |
1724 | ||
1725 | int dns_resource_record_clamp_ttl(DnsResourceRecord **rr, uint32_t max_ttl) { | |
1726 | DnsResourceRecord *old_rr, *new_rr; | |
1727 | uint32_t new_ttl; | |
1728 | ||
1729 | assert(rr); | |
1730 | old_rr = *rr; | |
1731 | ||
1732 | if (old_rr->key->type == DNS_TYPE_OPT) | |
1733 | return -EINVAL; | |
1734 | ||
1735 | new_ttl = MIN(old_rr->ttl, max_ttl); | |
1736 | if (new_ttl == old_rr->ttl) | |
1737 | return 0; | |
1738 | ||
1739 | if (old_rr->n_ref == 1) { | |
1740 | /* Patch in place */ | |
1741 | old_rr->ttl = new_ttl; | |
1742 | return 1; | |
1743 | } | |
1744 | ||
1745 | new_rr = dns_resource_record_copy(old_rr); | |
1746 | if (!new_rr) | |
1747 | return -ENOMEM; | |
1748 | ||
1749 | new_rr->ttl = new_ttl; | |
1750 | ||
1751 | dns_resource_record_unref(*rr); | |
1752 | *rr = new_rr; | |
1753 | ||
1754 | return 1; | |
1755 | } | |
1756 | ||
2001c805 LP |
1757 | DnsTxtItem *dns_txt_item_free_all(DnsTxtItem *i) { |
1758 | DnsTxtItem *n; | |
1759 | ||
1760 | if (!i) | |
1761 | return NULL; | |
1762 | ||
1763 | n = i->items_next; | |
1764 | ||
1765 | free(i); | |
1766 | return dns_txt_item_free_all(n); | |
1767 | } | |
1768 | ||
1769 | bool dns_txt_item_equal(DnsTxtItem *a, DnsTxtItem *b) { | |
1770 | ||
4d247a6c LP |
1771 | if (a == b) |
1772 | return true; | |
1773 | ||
2001c805 LP |
1774 | if (!a != !b) |
1775 | return false; | |
1776 | ||
1777 | if (!a) | |
1778 | return true; | |
1779 | ||
1780 | if (a->length != b->length) | |
1781 | return false; | |
1782 | ||
1783 | if (memcmp(a->data, b->data, a->length) != 0) | |
1784 | return false; | |
1785 | ||
1786 | return dns_txt_item_equal(a->items_next, b->items_next); | |
1787 | } | |
8730bccf | 1788 | |
17c8de63 LP |
1789 | DnsTxtItem *dns_txt_item_copy(DnsTxtItem *first) { |
1790 | DnsTxtItem *i, *copy = NULL, *end = NULL; | |
1791 | ||
1792 | LIST_FOREACH(items, i, first) { | |
1793 | DnsTxtItem *j; | |
1794 | ||
1795 | j = memdup(i, offsetof(DnsTxtItem, data) + i->length + 1); | |
1796 | if (!j) { | |
1797 | dns_txt_item_free_all(copy); | |
1798 | return NULL; | |
1799 | } | |
1800 | ||
1801 | LIST_INSERT_AFTER(items, copy, end, j); | |
1802 | end = j; | |
1803 | } | |
1804 | ||
1805 | return copy; | |
1806 | } | |
1807 | ||
8730bccf | 1808 | static const char* const dnssec_algorithm_table[_DNSSEC_ALGORITHM_MAX_DEFINED] = { |
6f717d08 | 1809 | /* Mnemonics as listed on https://www.iana.org/assignments/dns-sec-alg-numbers/dns-sec-alg-numbers.xhtml */ |
8730bccf LP |
1810 | [DNSSEC_ALGORITHM_RSAMD5] = "RSAMD5", |
1811 | [DNSSEC_ALGORITHM_DH] = "DH", | |
1812 | [DNSSEC_ALGORITHM_DSA] = "DSA", | |
1813 | [DNSSEC_ALGORITHM_ECC] = "ECC", | |
1814 | [DNSSEC_ALGORITHM_RSASHA1] = "RSASHA1", | |
1815 | [DNSSEC_ALGORITHM_DSA_NSEC3_SHA1] = "DSA-NSEC3-SHA1", | |
1816 | [DNSSEC_ALGORITHM_RSASHA1_NSEC3_SHA1] = "RSASHA1-NSEC3-SHA1", | |
1817 | [DNSSEC_ALGORITHM_RSASHA256] = "RSASHA256", | |
1818 | [DNSSEC_ALGORITHM_RSASHA512] = "RSASHA512", | |
6f717d08 LP |
1819 | [DNSSEC_ALGORITHM_ECC_GOST] = "ECC-GOST", |
1820 | [DNSSEC_ALGORITHM_ECDSAP256SHA256] = "ECDSAP256SHA256", | |
1821 | [DNSSEC_ALGORITHM_ECDSAP384SHA384] = "ECDSAP384SHA384", | |
8730bccf LP |
1822 | [DNSSEC_ALGORITHM_INDIRECT] = "INDIRECT", |
1823 | [DNSSEC_ALGORITHM_PRIVATEDNS] = "PRIVATEDNS", | |
1824 | [DNSSEC_ALGORITHM_PRIVATEOID] = "PRIVATEOID", | |
1825 | }; | |
8e54f5d9 | 1826 | DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(dnssec_algorithm, int, 255); |
8730bccf LP |
1827 | |
1828 | static const char* const dnssec_digest_table[_DNSSEC_DIGEST_MAX_DEFINED] = { | |
6f717d08 LP |
1829 | /* Names as listed on https://www.iana.org/assignments/ds-rr-types/ds-rr-types.xhtml */ |
1830 | [DNSSEC_DIGEST_SHA1] = "SHA-1", | |
1831 | [DNSSEC_DIGEST_SHA256] = "SHA-256", | |
1832 | [DNSSEC_DIGEST_GOST_R_34_11_94] = "GOST_R_34.11-94", | |
1833 | [DNSSEC_DIGEST_SHA384] = "SHA-384", | |
8730bccf | 1834 | }; |
8e54f5d9 | 1835 | DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(dnssec_digest, int, 255); |