]>
Commit | Line | Data |
---|---|---|
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 | ||
22 | #include "utf8.h" | |
23 | ||
24 | #include "resolved-dns-domain.h" | |
25 | #include "resolved-dns-packet.h" | |
26 | ||
27 | int dns_packet_new(DnsPacket **ret, size_t mtu) { | |
28 | DnsPacket *p; | |
29 | size_t a; | |
30 | ||
31 | assert(ret); | |
32 | ||
33 | if (mtu <= 0) | |
34 | a = DNS_PACKET_SIZE_START; | |
35 | else | |
36 | a = mtu; | |
37 | ||
38 | if (a < DNS_PACKET_HEADER_SIZE) | |
39 | a = DNS_PACKET_HEADER_SIZE; | |
40 | ||
41 | p = malloc0(ALIGN(sizeof(DnsPacket)) + a); | |
42 | if (!p) | |
43 | return -ENOMEM; | |
44 | ||
45 | p->size = p->rindex = DNS_PACKET_HEADER_SIZE; | |
46 | p->allocated = a; | |
47 | p->n_ref = 1; | |
48 | ||
49 | *ret = p; | |
50 | ||
51 | return 0; | |
52 | } | |
53 | ||
54 | int dns_packet_new_query(DnsPacket **ret, size_t mtu) { | |
55 | DnsPacket *p; | |
56 | DnsPacketHeader *h; | |
57 | int r; | |
58 | ||
59 | assert(ret); | |
60 | ||
61 | r = dns_packet_new(&p, mtu); | |
62 | if (r < 0) | |
63 | return r; | |
64 | ||
65 | h = DNS_PACKET_HEADER(p); | |
66 | h->flags = htobe16(DNS_PACKET_MAKE_FLAGS(0, 0, 0, 0, 1, 0, 0, 0, 0)); | |
67 | ||
68 | *ret = p; | |
69 | return 0; | |
70 | } | |
71 | ||
72 | DnsPacket *dns_packet_ref(DnsPacket *p) { | |
73 | ||
74 | if (!p) | |
75 | return NULL; | |
76 | ||
77 | assert(p->n_ref > 0); | |
78 | p->n_ref++; | |
79 | return p; | |
80 | } | |
81 | ||
82 | static void dns_packet_free(DnsPacket *p) { | |
83 | char *s; | |
84 | ||
85 | assert(p); | |
86 | ||
87 | while ((s = hashmap_steal_first_key(p->names))) | |
88 | free(s); | |
89 | hashmap_free(p->names); | |
90 | ||
91 | free(p->data); | |
92 | free(p); | |
93 | } | |
94 | ||
95 | DnsPacket *dns_packet_unref(DnsPacket *p) { | |
96 | if (!p) | |
97 | return NULL; | |
98 | ||
99 | assert(p->n_ref > 0); | |
100 | ||
101 | if (p->n_ref == 1) | |
102 | dns_packet_free(p); | |
103 | else | |
104 | p->n_ref--; | |
105 | ||
106 | return NULL; | |
107 | } | |
108 | ||
109 | int dns_packet_validate(DnsPacket *p) { | |
110 | assert(p); | |
111 | ||
112 | if (p->size < DNS_PACKET_HEADER_SIZE) | |
113 | return -EBADMSG; | |
114 | ||
115 | return 0; | |
116 | } | |
117 | ||
118 | int dns_packet_validate_reply(DnsPacket *p) { | |
119 | DnsPacketHeader *h; | |
120 | int r; | |
121 | ||
122 | assert(p); | |
123 | ||
124 | r = dns_packet_validate(p); | |
125 | if (r < 0) | |
126 | return r; | |
127 | ||
128 | h = DNS_PACKET_HEADER(p); | |
129 | ||
130 | /* Check QR field */ | |
131 | if ((be16toh(h->flags) & 1) == 0) | |
132 | return -EBADMSG; | |
133 | ||
134 | /* Check opcode field */ | |
135 | if (((be16toh(h->flags) >> 1) & 15) != 0) | |
136 | return -EBADMSG; | |
137 | ||
138 | return 0; | |
139 | } | |
140 | ||
141 | static int dns_packet_extend(DnsPacket *p, size_t add, void **ret, size_t *start) { | |
142 | assert(p); | |
143 | ||
144 | if (p->size + add > p->allocated) | |
145 | return -ENOMEM; | |
146 | ||
147 | if (start) | |
148 | *start = p->size; | |
149 | ||
150 | if (ret) | |
151 | *ret = (uint8_t*) DNS_PACKET_DATA(p) + p->size; | |
152 | ||
153 | p->size += add; | |
154 | return 0; | |
155 | } | |
156 | ||
157 | static void dns_packet_truncate(DnsPacket *p, size_t sz) { | |
158 | Iterator i; | |
159 | char *s; | |
160 | void *n; | |
161 | ||
162 | assert(p); | |
163 | ||
164 | if (p->size <= sz) | |
165 | return; | |
166 | ||
167 | HASHMAP_FOREACH_KEY(s, n, p->names, i) { | |
168 | ||
169 | if (PTR_TO_SIZE(n) < sz) | |
170 | continue; | |
171 | ||
172 | hashmap_remove(p->names, s); | |
173 | free(s); | |
174 | } | |
175 | ||
176 | p->size = sz; | |
177 | } | |
178 | ||
179 | int dns_packet_append_uint8(DnsPacket *p, uint8_t v, size_t *start) { | |
180 | void *d; | |
181 | int r; | |
182 | ||
183 | assert(p); | |
184 | ||
185 | r = dns_packet_extend(p, sizeof(uint8_t), &d, start); | |
186 | if (r < 0) | |
187 | return r; | |
188 | ||
189 | ((uint8_t*) d)[0] = v; | |
190 | ||
191 | return 0; | |
192 | } | |
193 | ||
194 | int dns_packet_append_uint16(DnsPacket *p, uint16_t v, size_t *start) { | |
195 | void *d; | |
196 | int r; | |
197 | ||
198 | assert(p); | |
199 | ||
200 | r = dns_packet_extend(p, sizeof(uint16_t), &d, start); | |
201 | if (r < 0) | |
202 | return r; | |
203 | ||
204 | ((uint8_t*) d)[0] = (uint8_t) (v >> 8); | |
205 | ((uint8_t*) d)[1] = (uint8_t) (v & 255); | |
206 | ||
207 | return 0; | |
208 | } | |
209 | ||
210 | int dns_packet_append_string(DnsPacket *p, const char *s, size_t *start) { | |
211 | void *d; | |
212 | size_t l; | |
213 | int r; | |
214 | ||
215 | assert(p); | |
216 | assert(s); | |
217 | ||
218 | l = strlen(s); | |
219 | if (l > 255) | |
220 | return -E2BIG; | |
221 | ||
222 | r = dns_packet_extend(p, 1 + l, &d, start); | |
223 | if (r < 0) | |
224 | return r; | |
225 | ||
226 | ((uint8_t*) d)[0] = (uint8_t) l; | |
227 | memcpy(((uint8_t*) d) + 1, s, l); | |
228 | ||
229 | return 0; | |
230 | } | |
231 | ||
232 | int dns_packet_append_label(DnsPacket *p, const char *d, size_t l, size_t *start) { | |
233 | void *w; | |
234 | int r; | |
235 | ||
236 | assert(p); | |
237 | assert(d); | |
238 | ||
239 | if (l > DNS_LABEL_MAX) | |
240 | return -E2BIG; | |
241 | ||
242 | r = dns_packet_extend(p, 1 + l, &w, start); | |
243 | if (r < 0) | |
244 | return r; | |
245 | ||
246 | ((uint8_t*) w)[0] = (uint8_t) l; | |
247 | memcpy(((uint8_t*) w) + 1, d, l); | |
248 | ||
249 | return 0; | |
250 | } | |
251 | ||
252 | int dns_packet_append_name(DnsPacket *p, const char *name, size_t *start) { | |
253 | size_t saved_size; | |
254 | int r; | |
255 | ||
256 | assert(p); | |
257 | assert(name); | |
258 | ||
259 | saved_size = p->size; | |
260 | ||
261 | while (*name) { | |
262 | _cleanup_free_ char *s = NULL; | |
263 | char label[DNS_LABEL_MAX]; | |
264 | size_t n; | |
265 | ||
266 | n = PTR_TO_SIZE(hashmap_get(p->names, name)); | |
267 | if (n > 0) { | |
268 | assert(n < p->size); | |
269 | ||
270 | if (n < 0x4000) { | |
271 | r = dns_packet_append_uint16(p, 0xC000 | n, NULL); | |
272 | if (r < 0) | |
273 | goto fail; | |
274 | ||
275 | goto done; | |
276 | } | |
277 | } | |
278 | ||
279 | s = strdup(name); | |
280 | if (!s) { | |
281 | r = -ENOMEM; | |
282 | goto fail; | |
283 | } | |
284 | ||
285 | r = dns_label_unescape(&name, label, sizeof(label)); | |
286 | if (r < 0) | |
287 | goto fail; | |
288 | ||
289 | r = dns_packet_append_label(p, label, r, &n); | |
290 | if (r < 0) | |
291 | goto fail; | |
292 | ||
293 | r = hashmap_ensure_allocated(&p->names, dns_name_hash_func, dns_name_compare_func); | |
294 | if (r < 0) | |
295 | goto fail; | |
296 | ||
297 | r = hashmap_put(p->names, s, SIZE_TO_PTR(n)); | |
298 | if (r < 0) | |
299 | goto fail; | |
300 | ||
301 | s = NULL; | |
302 | } | |
303 | ||
304 | r = dns_packet_append_uint8(p, 0, NULL); | |
305 | if (r < 0) | |
306 | return r; | |
307 | ||
308 | done: | |
309 | if (start) | |
310 | *start = saved_size; | |
311 | ||
312 | return 0; | |
313 | ||
314 | fail: | |
315 | dns_packet_truncate(p, saved_size); | |
316 | return r; | |
317 | } | |
318 | ||
319 | int dns_packet_append_key(DnsPacket *p, const DnsResourceKey *k, size_t *start) { | |
320 | size_t saved_size; | |
321 | int r; | |
322 | ||
323 | assert(p); | |
324 | assert(k); | |
325 | ||
326 | saved_size = p->size; | |
327 | ||
328 | r = dns_packet_append_name(p, k->name, NULL); | |
329 | if (r < 0) | |
330 | goto fail; | |
331 | ||
332 | r = dns_packet_append_uint16(p, k->type, NULL); | |
333 | if (r < 0) | |
334 | goto fail; | |
335 | ||
336 | r = dns_packet_append_uint16(p, k->class, NULL); | |
337 | if (r < 0) | |
338 | goto fail; | |
339 | ||
340 | if (start) | |
341 | *start = saved_size; | |
342 | ||
343 | return 0; | |
344 | ||
345 | fail: | |
346 | dns_packet_truncate(p, saved_size); | |
347 | return r; | |
348 | } | |
349 | ||
350 | int dns_packet_read(DnsPacket *p, size_t sz, const void **ret, size_t *start) { | |
351 | assert(p); | |
352 | ||
353 | if (p->rindex + sz > p->size) | |
354 | return -EMSGSIZE; | |
355 | ||
356 | if (ret) | |
357 | *ret = (uint8_t*) DNS_PACKET_DATA(p) + p->rindex; | |
358 | ||
359 | if (start) | |
360 | *start = p->rindex; | |
361 | ||
362 | p->rindex += sz; | |
363 | return 0; | |
364 | } | |
365 | ||
366 | static void dns_packet_rewind(DnsPacket *p, size_t idx) { | |
367 | assert(p); | |
368 | assert(idx <= p->size); | |
369 | assert(idx >= DNS_PACKET_HEADER_SIZE); | |
370 | ||
371 | p->rindex = idx; | |
372 | } | |
373 | ||
374 | int dns_packet_read_uint8(DnsPacket *p, uint8_t *ret, size_t *start) { | |
375 | const void *d; | |
376 | int r; | |
377 | ||
378 | assert(p); | |
379 | ||
380 | r = dns_packet_read(p, sizeof(uint8_t), &d, start); | |
381 | if (r < 0) | |
382 | return r; | |
383 | ||
384 | *ret = ((uint8_t*) d)[0]; | |
385 | return 0; | |
386 | } | |
387 | ||
388 | int dns_packet_read_uint16(DnsPacket *p, uint16_t *ret, size_t *start) { | |
389 | const void *d; | |
390 | int r; | |
391 | ||
392 | assert(p); | |
393 | ||
394 | r = dns_packet_read(p, sizeof(uint16_t), &d, start); | |
395 | if (r < 0) | |
396 | return r; | |
397 | ||
398 | *ret = (((uint16_t) ((uint8_t*) d)[0]) << 8) | | |
399 | ((uint16_t) ((uint8_t*) d)[1]); | |
400 | return 0; | |
401 | } | |
402 | ||
403 | int dns_packet_read_uint32(DnsPacket *p, uint32_t *ret, size_t *start) { | |
404 | const void *d; | |
405 | int r; | |
406 | ||
407 | assert(p); | |
408 | ||
409 | r = dns_packet_read(p, sizeof(uint32_t), &d, start); | |
410 | if (r < 0) | |
411 | return r; | |
412 | ||
413 | *ret = (((uint32_t) ((uint8_t*) d)[0]) << 24) | | |
414 | (((uint32_t) ((uint8_t*) d)[1]) << 16) | | |
415 | (((uint32_t) ((uint8_t*) d)[2]) << 8) | | |
416 | ((uint32_t) ((uint8_t*) d)[3]); | |
417 | ||
418 | return 0; | |
419 | } | |
420 | ||
421 | int dns_packet_read_string(DnsPacket *p, char **ret, size_t *start) { | |
422 | size_t saved_rindex; | |
423 | const void *d; | |
424 | char *t; | |
425 | uint8_t c; | |
426 | int r; | |
427 | ||
428 | assert(p); | |
429 | ||
430 | saved_rindex = p->rindex; | |
431 | ||
432 | r = dns_packet_read_uint8(p, &c, NULL); | |
433 | if (r < 0) | |
434 | goto fail; | |
435 | ||
436 | r = dns_packet_read(p, c, &d, NULL); | |
437 | if (r < 0) | |
438 | goto fail; | |
439 | ||
440 | if (memchr(d, 0, c)) { | |
441 | r = -EBADMSG; | |
442 | goto fail; | |
443 | } | |
444 | ||
445 | t = strndup(d, c); | |
446 | if (!t) { | |
447 | r = -ENOMEM; | |
448 | goto fail; | |
449 | } | |
450 | ||
451 | if (!utf8_is_valid(t)) { | |
452 | free(t); | |
453 | r = -EBADMSG; | |
454 | goto fail; | |
455 | } | |
456 | ||
457 | *ret = t; | |
458 | ||
459 | if (start) | |
460 | *start = saved_rindex; | |
461 | ||
462 | return 0; | |
463 | ||
464 | fail: | |
465 | dns_packet_rewind(p, saved_rindex); | |
466 | return r; | |
467 | } | |
468 | ||
469 | int dns_packet_read_name(DnsPacket *p, char **_ret, size_t *start) { | |
470 | size_t saved_rindex, after_rindex = 0; | |
471 | _cleanup_free_ char *ret = NULL; | |
472 | size_t n = 0, allocated = 0; | |
473 | bool first = true; | |
474 | int r; | |
475 | ||
476 | assert(p); | |
477 | assert(_ret); | |
478 | ||
479 | saved_rindex = p->rindex; | |
480 | ||
481 | for (;;) { | |
482 | uint8_t c, d; | |
483 | ||
484 | r = dns_packet_read_uint8(p, &c, NULL); | |
485 | if (r < 0) | |
486 | goto fail; | |
487 | ||
488 | if (c == 0) | |
489 | /* End of name */ | |
490 | break; | |
491 | else if (c <= 63) { | |
492 | _cleanup_free_ char *t = NULL; | |
493 | const char *label; | |
494 | ||
495 | /* Literal label */ | |
496 | r = dns_packet_read(p, c, (const void**) &label, NULL); | |
497 | if (r < 0) | |
498 | goto fail; | |
499 | ||
500 | r = dns_label_escape(label, c, &t); | |
501 | if (r < 0) | |
502 | goto fail; | |
503 | ||
504 | if (!GREEDY_REALLOC(ret, allocated, n + !first + strlen(t) + 1)) { | |
505 | r = -ENOMEM; | |
506 | goto fail; | |
507 | } | |
508 | ||
509 | if (!first) | |
510 | ret[n++] = '.'; | |
511 | else | |
512 | first = false; | |
513 | ||
514 | memcpy(ret + n, t, c); | |
515 | n += r; | |
516 | continue; | |
517 | } else if ((c & 0xc0) == 0xc0) { | |
518 | uint16_t ptr; | |
519 | ||
520 | /* Pointer */ | |
521 | r = dns_packet_read_uint8(p, &d, NULL); | |
522 | if (r < 0) | |
523 | goto fail; | |
524 | ||
525 | ptr = (uint16_t) (c & ~0xc0) << 8 | (uint16_t) d; | |
526 | if (ptr < DNS_PACKET_HEADER_SIZE || ptr >= saved_rindex) { | |
527 | r = -EBADMSG; | |
528 | goto fail; | |
529 | } | |
530 | ||
531 | if (after_rindex == 0) | |
532 | after_rindex = p->rindex; | |
533 | ||
534 | p->rindex = ptr; | |
535 | } else | |
536 | goto fail; | |
537 | } | |
538 | ||
539 | if (!GREEDY_REALLOC(ret, allocated, n + 1)) { | |
540 | r = -ENOMEM; | |
541 | goto fail; | |
542 | } | |
543 | ||
544 | ret[n] = 0; | |
545 | ||
546 | if (after_rindex != 0) | |
547 | p->rindex= after_rindex; | |
548 | ||
549 | *_ret = ret; | |
550 | ret = NULL; | |
551 | ||
552 | if (start) | |
553 | *start = saved_rindex; | |
554 | ||
555 | return 0; | |
556 | ||
557 | fail: | |
558 | dns_packet_rewind(p, saved_rindex); | |
559 | return r; | |
560 | } | |
561 | ||
562 | int dns_packet_read_key(DnsPacket *p, DnsResourceKey *ret, size_t *start) { | |
563 | _cleanup_(dns_resource_key_free) DnsResourceKey k = {}; | |
564 | size_t saved_rindex; | |
565 | int r; | |
566 | ||
567 | assert(p); | |
568 | assert(ret); | |
569 | ||
570 | saved_rindex = p->rindex; | |
571 | ||
572 | r = dns_packet_read_name(p, &k.name, NULL); | |
573 | if (r < 0) | |
574 | goto fail; | |
575 | ||
576 | r = dns_packet_read_uint16(p, &k.type, NULL); | |
577 | if (r < 0) | |
578 | goto fail; | |
579 | ||
580 | r = dns_packet_read_uint16(p, &k.class, NULL); | |
581 | if (r < 0) | |
582 | goto fail; | |
583 | ||
584 | *ret = k; | |
585 | zero(k); | |
586 | ||
587 | if (start) | |
588 | *start = saved_rindex; | |
589 | ||
590 | return 0; | |
591 | fail: | |
592 | dns_packet_rewind(p, saved_rindex); | |
593 | return r; | |
594 | } | |
595 | ||
596 | int dns_packet_read_rr(DnsPacket *p, DnsResourceRecord **ret, size_t *start) { | |
4e0296a9 | 597 | _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr; |
74b2466e LP |
598 | size_t saved_rindex, offset; |
599 | uint16_t rdlength; | |
600 | const void *d; | |
601 | int r; | |
602 | ||
603 | assert(p); | |
604 | assert(ret); | |
605 | ||
74b2466e LP |
606 | rr = dns_resource_record_new(); |
607 | if (!rr) | |
4e0296a9 ZJS |
608 | return -ENOMEM; |
609 | ||
610 | saved_rindex = p->rindex; | |
74b2466e LP |
611 | |
612 | r = dns_packet_read_key(p, &rr->key, NULL); | |
613 | if (r < 0) | |
614 | goto fail; | |
615 | ||
616 | r = dns_packet_read_uint32(p, &rr->ttl, NULL); | |
617 | if (r < 0) | |
618 | goto fail; | |
619 | ||
620 | r = dns_packet_read_uint16(p, &rdlength, NULL); | |
621 | if (r < 0) | |
622 | goto fail; | |
623 | ||
624 | if (p->rindex + rdlength > p->size) { | |
625 | r = -EBADMSG; | |
626 | goto fail; | |
627 | } | |
628 | ||
629 | offset = p->rindex; | |
630 | ||
631 | switch (rr->key.type) { | |
632 | ||
633 | case DNS_TYPE_PTR: | |
634 | case DNS_TYPE_NS: | |
635 | case DNS_TYPE_CNAME: | |
636 | r = dns_packet_read_name(p, &rr->ptr.name, NULL); | |
637 | break; | |
638 | ||
639 | case DNS_TYPE_HINFO: | |
640 | r = dns_packet_read_string(p, &rr->hinfo.cpu, NULL); | |
641 | if (r < 0) | |
642 | goto fail; | |
643 | ||
644 | r = dns_packet_read_string(p, &rr->hinfo.os, NULL); | |
645 | break; | |
646 | ||
647 | case DNS_TYPE_A: | |
648 | r = dns_packet_read(p, sizeof(struct in_addr), &d, NULL); | |
649 | if (r < 0) | |
650 | goto fail; | |
651 | ||
652 | memcpy(&rr->a.in_addr, d, sizeof(struct in_addr)); | |
653 | break; | |
654 | ||
655 | case DNS_TYPE_AAAA: | |
656 | r = dns_packet_read(p, sizeof(struct in6_addr), &d, NULL); | |
657 | if (r < 0) | |
658 | goto fail; | |
659 | ||
660 | memcpy(&rr->aaaa.in6_addr, d, sizeof(struct in6_addr)); | |
661 | break; | |
662 | ||
663 | default: | |
664 | r = dns_packet_read(p, rdlength, &d, NULL); | |
665 | if (r < 0) | |
666 | goto fail; | |
667 | ||
668 | rr->generic.data = memdup(d, rdlength); | |
669 | if (!rr->generic.data) { | |
670 | r = -ENOMEM; | |
671 | goto fail; | |
672 | } | |
673 | ||
674 | rr->generic.size = rdlength; | |
675 | break; | |
676 | } | |
677 | if (r < 0) | |
678 | goto fail; | |
679 | if (p->rindex != offset + rdlength) { | |
680 | r = -EBADMSG; | |
681 | goto fail; | |
682 | } | |
683 | ||
684 | *ret = rr; | |
685 | rr = NULL; | |
686 | ||
687 | if (start) | |
688 | *start = saved_rindex; | |
689 | ||
690 | return 0; | |
691 | fail: | |
692 | dns_packet_rewind(p, saved_rindex); | |
693 | return r; | |
694 | } | |
695 | ||
696 | int dns_packet_skip_question(DnsPacket *p) { | |
697 | int r; | |
698 | ||
699 | unsigned i, n; | |
700 | assert(p); | |
701 | ||
702 | n = be16toh(DNS_PACKET_HEADER(p)->qdcount); | |
703 | for (i = 0; i < n; i++) { | |
704 | _cleanup_(dns_resource_key_free) DnsResourceKey key = {}; | |
705 | ||
706 | r = dns_packet_read_key(p, &key, NULL); | |
707 | if (r < 0) | |
708 | return r; | |
709 | } | |
710 | ||
711 | return 0; | |
712 | } | |
713 | ||
714 | static const char* const dns_rcode_table[_DNS_RCODE_MAX_DEFINED] = { | |
715 | [DNS_RCODE_SUCCESS] = "SUCCESS", | |
716 | [DNS_RCODE_FORMERR] = "FORMERR", | |
717 | [DNS_RCODE_SERVFAIL] = "SERVFAIL", | |
718 | [DNS_RCODE_NXDOMAIN] = "NXDOMAIN", | |
719 | [DNS_RCODE_NOTIMP] = "NOTIMP", | |
720 | [DNS_RCODE_REFUSED] = "REFUSED", | |
721 | [DNS_RCODE_YXDOMAIN] = "YXDOMAIN", | |
722 | [DNS_RCODE_YXRRSET] = "YRRSET", | |
723 | [DNS_RCODE_NXRRSET] = "NXRRSET", | |
724 | [DNS_RCODE_NOTAUTH] = "NOTAUTH", | |
725 | [DNS_RCODE_NOTZONE] = "NOTZONE", | |
726 | [DNS_RCODE_BADVERS] = "BADVERS", | |
727 | [DNS_RCODE_BADKEY] = "BADKEY", | |
728 | [DNS_RCODE_BADTIME] = "BADTIME", | |
729 | [DNS_RCODE_BADMODE] = "BADMODE", | |
730 | [DNS_RCODE_BADNAME] = "BADNAME", | |
731 | [DNS_RCODE_BADALG] = "BADALG", | |
732 | [DNS_RCODE_BADTRUNC] = "BADTRUNC", | |
733 | }; | |
734 | DEFINE_STRING_TABLE_LOOKUP(dns_rcode, int); |