2 * daemon/cachedump.c - dump the cache to text format.
4 * Copyright (c) 2008, NLnet Labs. All rights reserved.
6 * This software is open source.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
15 * Redistributions in binary form must reproduce the above copyright notice,
16 * this list of conditions and the following disclaimer in the documentation
17 * and/or other materials provided with the distribution.
19 * Neither the name of the NLNET LABS nor the names of its contributors may
20 * be used to endorse or promote products derived from this software without
21 * specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 * This file contains functions to read and write the cache(s)
43 #include <openssl/ssl.h>
44 #include "daemon/cachedump.h"
45 #include "daemon/remote.h"
46 #include "daemon/worker.h"
47 #include "services/cache/rrset.h"
48 #include "services/cache/dns.h"
49 #include "services/cache/infra.h"
50 #include "util/data/msgreply.h"
51 #include "util/regional.h"
52 #include "util/net_help.h"
53 #include "util/data/dname.h"
54 #include "iterator/iterator.h"
55 #include "iterator/iter_delegpt.h"
56 #include "iterator/iter_utils.h"
57 #include "iterator/iter_fwd.h"
58 #include "iterator/iter_hints.h"
59 #include "sldns/sbuffer.h"
60 #include "sldns/wire2str.h"
61 #include "sldns/str2wire.h"
63 /** dump one rrset zonefile line */
65 dump_rrset_line(SSL* ssl, struct ub_packed_rrset_key* k, time_t now, size_t i)
68 if(!packed_rr_to_string(k, i, now, s, sizeof(s))) {
69 return ssl_printf(ssl, "BADRR\n");
71 return ssl_printf(ssl, "%s", s);
74 /** dump rrset key and data info */
76 dump_rrset(SSL* ssl, struct ub_packed_rrset_key* k,
77 struct packed_rrset_data* d, time_t now)
80 /* rd lock held by caller */
81 if(!k || !d) return 1;
82 if(d->ttl < now) return 1; /* expired */
85 if(!ssl_printf(ssl, ";rrset%s " ARG_LL "d %u %u %d %d\n",
86 (k->rk.flags & PACKED_RRSET_NSEC_AT_APEX)?" nsec_apex":"",
87 (long long)(d->ttl - now),
88 (unsigned)d->count, (unsigned)d->rrsig_count,
89 (int)d->trust, (int)d->security
92 for(i=0; i<d->count + d->rrsig_count; i++) {
93 if(!dump_rrset_line(ssl, k, now, i))
99 /** dump lruhash rrset cache */
101 dump_rrset_lruhash(SSL* ssl, struct lruhash* h, time_t now)
103 struct lruhash_entry* e;
104 /* lruhash already locked by caller */
105 /* walk in order of lru; best first */
106 for(e=h->lru_start; e; e = e->lru_next) {
107 lock_rw_rdlock(&e->lock);
108 if(!dump_rrset(ssl, (struct ub_packed_rrset_key*)e->key,
109 (struct packed_rrset_data*)e->data, now)) {
110 lock_rw_unlock(&e->lock);
113 lock_rw_unlock(&e->lock);
118 /** dump rrset cache */
120 dump_rrset_cache(SSL* ssl, struct worker* worker)
122 struct rrset_cache* r = worker->env.rrset_cache;
124 if(!ssl_printf(ssl, "START_RRSET_CACHE\n")) return 0;
125 for(slab=0; slab<r->table.size; slab++) {
126 lock_quick_lock(&r->table.array[slab]->lock);
127 if(!dump_rrset_lruhash(ssl, r->table.array[slab],
129 lock_quick_unlock(&r->table.array[slab]->lock);
132 lock_quick_unlock(&r->table.array[slab]->lock);
134 return ssl_printf(ssl, "END_RRSET_CACHE\n");
137 /** dump message to rrset reference */
139 dump_msg_ref(SSL* ssl, struct ub_packed_rrset_key* k)
142 nm = sldns_wire2str_dname(k->rk.dname, k->rk.dname_len);
143 tp = sldns_wire2str_type(ntohs(k->rk.type));
144 cl = sldns_wire2str_class(ntohs(k->rk.rrset_class));
145 if(!nm || !cl || !tp) {
149 return ssl_printf(ssl, "BADREF\n");
151 if(!ssl_printf(ssl, "%s %s %s %d\n", nm, cl, tp, (int)k->rk.flags)) {
164 /** dump message entry */
166 dump_msg(SSL* ssl, struct query_info* k, struct reply_info* d,
171 if(!k || !d) return 1;
172 if(d->ttl < now) return 1; /* expired */
174 nm = sldns_wire2str_dname(k->qname, k->qname_len);
175 tp = sldns_wire2str_type(k->qtype);
176 cl = sldns_wire2str_class(k->qclass);
177 if(!nm || !tp || !cl) {
181 return 1; /* skip this entry */
183 if(!rrset_array_lock(d->ref, d->rrset_count, now)) {
184 /* rrsets have timed out or do not exist */
188 return 1; /* skip this entry */
192 if(!ssl_printf(ssl, "msg %s %s %s %d %d " ARG_LL "d %d %u %u %u\n",
194 (int)d->flags, (int)d->qdcount,
195 (long long)(d->ttl-now), (int)d->security,
196 (unsigned)d->an_numrrsets,
197 (unsigned)d->ns_numrrsets,
198 (unsigned)d->ar_numrrsets)) {
202 rrset_array_unlock(d->ref, d->rrset_count);
209 for(i=0; i<d->rrset_count; i++) {
210 if(!dump_msg_ref(ssl, d->rrsets[i])) {
211 rrset_array_unlock(d->ref, d->rrset_count);
215 rrset_array_unlock(d->ref, d->rrset_count);
220 /** copy msg to worker pad */
222 copy_msg(struct regional* region, struct lruhash_entry* e,
223 struct query_info** k, struct reply_info** d)
225 struct reply_info* rep = (struct reply_info*)e->data;
226 if(rep->rrset_count > RR_COUNT_MAX)
227 return 0; /* to protect against integer overflow */
228 *d = (struct reply_info*)regional_alloc_init(region, e->data,
229 sizeof(struct reply_info) +
230 sizeof(struct rrset_ref) * (rep->rrset_count-1) +
231 sizeof(struct ub_packed_rrset_key*) * rep->rrset_count);
234 (*d)->rrsets = (struct ub_packed_rrset_key**)(void *)(
235 (uint8_t*)(&((*d)->ref[0])) +
236 sizeof(struct rrset_ref) * rep->rrset_count);
237 *k = (struct query_info*)regional_alloc_init(region,
238 e->key, sizeof(struct query_info));
241 (*k)->qname = regional_alloc_init(region,
242 (*k)->qname, (*k)->qname_len);
243 return (*k)->qname != NULL;
246 /** dump lruhash msg cache */
248 dump_msg_lruhash(SSL* ssl, struct worker* worker, struct lruhash* h)
250 struct lruhash_entry* e;
251 struct query_info* k;
252 struct reply_info* d;
254 /* lruhash already locked by caller */
255 /* walk in order of lru; best first */
256 for(e=h->lru_start; e; e = e->lru_next) {
257 regional_free_all(worker->scratchpad);
258 lock_rw_rdlock(&e->lock);
259 /* make copy of rrset in worker buffer */
260 if(!copy_msg(worker->scratchpad, e, &k, &d)) {
261 lock_rw_unlock(&e->lock);
264 lock_rw_unlock(&e->lock);
265 /* release lock so we can lookup the rrset references
266 * in the rrset cache */
267 if(!dump_msg(ssl, k, d, *worker->env.now)) {
274 /** dump msg cache */
276 dump_msg_cache(SSL* ssl, struct worker* worker)
278 struct slabhash* sh = worker->env.msg_cache;
280 if(!ssl_printf(ssl, "START_MSG_CACHE\n")) return 0;
281 for(slab=0; slab<sh->size; slab++) {
282 lock_quick_lock(&sh->array[slab]->lock);
283 if(!dump_msg_lruhash(ssl, worker, sh->array[slab])) {
284 lock_quick_unlock(&sh->array[slab]->lock);
287 lock_quick_unlock(&sh->array[slab]->lock);
289 return ssl_printf(ssl, "END_MSG_CACHE\n");
293 dump_cache(SSL* ssl, struct worker* worker)
295 if(!dump_rrset_cache(ssl, worker))
297 if(!dump_msg_cache(ssl, worker))
299 return ssl_printf(ssl, "EOF\n");
302 /** read a line from ssl into buffer */
304 ssl_read_buf(SSL* ssl, sldns_buffer* buf)
306 return ssl_read_line(ssl, (char*)sldns_buffer_begin(buf),
307 sldns_buffer_capacity(buf));
310 /** check fixed text on line */
312 read_fixed(SSL* ssl, sldns_buffer* buf, const char* str)
314 if(!ssl_read_buf(ssl, buf)) return 0;
315 return (strcmp((char*)sldns_buffer_begin(buf), str) == 0);
318 /** load an RR into rrset */
320 load_rr(SSL* ssl, sldns_buffer* buf, struct regional* region,
321 struct ub_packed_rrset_key* rk, struct packed_rrset_data* d,
322 unsigned int i, int is_rrsig, int* go_on, time_t now)
324 uint8_t rr[LDNS_RR_BUF_SIZE];
325 size_t rr_len = sizeof(rr), dname_len = 0;
329 if(!ssl_read_buf(ssl, buf))
331 if(strncmp((char*)sldns_buffer_begin(buf), "BADRR\n", 6) == 0) {
335 status = sldns_str2wire_rr_buf((char*)sldns_buffer_begin(buf), rr,
336 &rr_len, &dname_len, 3600, NULL, 0, NULL, 0);
338 log_warn("error cannot parse rr: %s: %s",
339 sldns_get_errorstr_parse(status),
340 (char*)sldns_buffer_begin(buf));
343 if(is_rrsig && sldns_wirerr_get_type(rr, rr_len, dname_len)
344 != LDNS_RR_TYPE_RRSIG) {
345 log_warn("error expected rrsig but got %s",
346 (char*)sldns_buffer_begin(buf));
350 /* convert ldns rr into packed_rr */
351 d->rr_ttl[i] = (time_t)sldns_wirerr_get_ttl(rr, rr_len, dname_len) + now;
352 sldns_buffer_clear(buf);
353 d->rr_len[i] = sldns_wirerr_get_rdatalen(rr, rr_len, dname_len)+2;
354 d->rr_data[i] = (uint8_t*)regional_alloc_init(region,
355 sldns_wirerr_get_rdatawl(rr, rr_len, dname_len), d->rr_len[i]);
357 log_warn("error out of memory");
361 /* if first entry, fill the key structure */
363 rk->rk.type = htons(sldns_wirerr_get_type(rr, rr_len, dname_len));
364 rk->rk.rrset_class = htons(sldns_wirerr_get_class(rr, rr_len, dname_len));
365 rk->rk.dname_len = dname_len;
366 rk->rk.dname = regional_alloc_init(region, rr, dname_len);
368 log_warn("error out of memory");
376 /** move entry into cache */
378 move_into_cache(struct ub_packed_rrset_key* k,
379 struct packed_rrset_data* d, struct worker* worker)
381 struct ub_packed_rrset_key* ak;
382 struct packed_rrset_data* ad;
383 size_t s, i, num = d->count + d->rrsig_count;
384 struct rrset_ref ref;
387 ak = alloc_special_obtain(&worker->alloc);
389 log_warn("error out of memory");
392 ak->entry.data = NULL;
394 ak->entry.hash = rrset_key_hash(&k->rk);
395 ak->rk.dname = (uint8_t*)memdup(k->rk.dname, k->rk.dname_len);
397 log_warn("error out of memory");
398 ub_packed_rrset_parsedelete(ak, &worker->alloc);
401 s = sizeof(*ad) + (sizeof(size_t) + sizeof(uint8_t*) +
402 sizeof(time_t))* num;
405 ad = (struct packed_rrset_data*)malloc(s);
407 log_warn("error out of memory");
408 ub_packed_rrset_parsedelete(ak, &worker->alloc);
412 memmove(p, d, sizeof(*ad));
414 memmove(p, &d->rr_len[0], sizeof(size_t)*num);
415 p += sizeof(size_t)*num;
416 memmove(p, &d->rr_data[0], sizeof(uint8_t*)*num);
417 p += sizeof(uint8_t*)*num;
418 memmove(p, &d->rr_ttl[0], sizeof(time_t)*num);
419 p += sizeof(time_t)*num;
420 for(i=0; i<num; i++) {
421 memmove(p, d->rr_data[i], d->rr_len[i]);
424 packed_rrset_ptr_fixup(ad);
430 (void)rrset_cache_update(worker->env.rrset_cache, &ref,
431 &worker->alloc, *worker->env.now);
435 /** load an rrset entry */
437 load_rrset(SSL* ssl, sldns_buffer* buf, struct worker* worker)
439 char* s = (char*)sldns_buffer_begin(buf);
440 struct regional* region = worker->scratchpad;
441 struct ub_packed_rrset_key* rk;
442 struct packed_rrset_data* d;
443 unsigned int rr_count, rrsig_count, trust, security;
447 regional_free_all(region);
449 rk = (struct ub_packed_rrset_key*)regional_alloc_zero(region,
451 d = (struct packed_rrset_data*)regional_alloc_zero(region, sizeof(*d));
453 log_warn("error out of memory");
457 if(strncmp(s, ";rrset", 6) != 0) {
458 log_warn("error expected ';rrset' but got %s", s);
462 if(strncmp(s, " nsec_apex", 10) == 0) {
464 rk->rk.flags |= PACKED_RRSET_NSEC_AT_APEX;
466 if(sscanf(s, " " ARG_LL "d %u %u %u %u", &ttl, &rr_count, &rrsig_count,
467 &trust, &security) != 5) {
468 log_warn("error bad rrset spec %s", s);
471 if(rr_count == 0 && rrsig_count == 0) {
472 log_warn("bad rrset without contents");
475 if(rr_count > RR_COUNT_MAX || rrsig_count > RR_COUNT_MAX) {
476 log_warn("bad rrset with too many rrs");
479 d->count = (size_t)rr_count;
480 d->rrsig_count = (size_t)rrsig_count;
481 d->security = (enum sec_status)security;
482 d->trust = (enum rrset_trust)trust;
483 d->ttl = (time_t)ttl + *worker->env.now;
485 d->rr_len = regional_alloc_zero(region,
486 sizeof(size_t)*(d->count+d->rrsig_count));
487 d->rr_ttl = regional_alloc_zero(region,
488 sizeof(time_t)*(d->count+d->rrsig_count));
489 d->rr_data = regional_alloc_zero(region,
490 sizeof(uint8_t*)*(d->count+d->rrsig_count));
491 if(!d->rr_len || !d->rr_ttl || !d->rr_data) {
492 log_warn("error out of memory");
496 /* read the rr's themselves */
497 for(i=0; i<rr_count; i++) {
498 if(!load_rr(ssl, buf, region, rk, d, i, 0,
499 &go_on, *worker->env.now)) {
500 log_warn("could not read rr %u", i);
504 for(i=0; i<rrsig_count; i++) {
505 if(!load_rr(ssl, buf, region, rk, d, i+rr_count, 1,
506 &go_on, *worker->env.now)) {
507 log_warn("could not read rrsig %u", i);
512 /* skip this entry */
516 return move_into_cache(rk, d, worker);
519 /** load rrset cache */
521 load_rrset_cache(SSL* ssl, struct worker* worker)
523 sldns_buffer* buf = worker->env.scratch_buffer;
524 if(!read_fixed(ssl, buf, "START_RRSET_CACHE")) return 0;
525 while(ssl_read_buf(ssl, buf) &&
526 strcmp((char*)sldns_buffer_begin(buf), "END_RRSET_CACHE")!=0) {
527 if(!load_rrset(ssl, buf, worker))
533 /** read qinfo from next three words */
535 load_qinfo(char* str, struct query_info* qinfo, struct regional* region)
537 /* s is part of the buf */
539 uint8_t rr[LDNS_RR_BUF_SIZE];
540 size_t rr_len = sizeof(rr), dname_len = 0;
543 /* skip three words */
544 s = strchr(str, ' ');
545 if(s) s = strchr(s+1, ' ');
546 if(s) s = strchr(s+1, ' ');
548 log_warn("error line too short, %s", str);
555 status = sldns_str2wire_rr_question_buf(str, rr, &rr_len, &dname_len,
558 log_warn("error cannot parse: %s %s",
559 sldns_get_errorstr_parse(status), str);
562 qinfo->qtype = sldns_wirerr_get_type(rr, rr_len, dname_len);
563 qinfo->qclass = sldns_wirerr_get_class(rr, rr_len, dname_len);
564 qinfo->qname_len = dname_len;
565 qinfo->qname = (uint8_t*)regional_alloc_init(region, rr, dname_len);
567 log_warn("error out of memory");
574 /** load a msg rrset reference */
576 load_ref(SSL* ssl, sldns_buffer* buf, struct worker* worker,
577 struct regional *region, struct ub_packed_rrset_key** rrset,
580 char* s = (char*)sldns_buffer_begin(buf);
581 struct query_info qinfo;
583 struct ub_packed_rrset_key* k;
586 if(!ssl_read_buf(ssl, buf))
588 if(strncmp(s, "BADREF", 6) == 0) {
589 *go_on = 0; /* its bad, skip it and skip message */
593 s = load_qinfo(s, &qinfo, region);
597 if(sscanf(s, " %u", &flags) != 1) {
598 log_warn("error cannot parse flags: %s", s);
602 /* lookup in cache */
603 k = rrset_cache_lookup(worker->env.rrset_cache, qinfo.qname,
604 qinfo.qname_len, qinfo.qtype, qinfo.qclass,
605 (uint32_t)flags, *worker->env.now, 0);
607 /* not found or expired */
612 /* store in result */
613 *rrset = packed_rrset_copy_region(k, region, *worker->env.now);
614 lock_rw_unlock(&k->entry.lock);
616 return (*rrset != NULL);
619 /** load a msg entry */
621 load_msg(SSL* ssl, sldns_buffer* buf, struct worker* worker)
623 struct regional* region = worker->scratchpad;
624 struct query_info qinf;
625 struct reply_info rep;
626 char* s = (char*)sldns_buffer_begin(buf);
627 unsigned int flags, qdcount, security, an, ns, ar;
632 regional_free_all(region);
634 if(strncmp(s, "msg ", 4) != 0) {
635 log_warn("error expected msg but got %s", s);
639 s = load_qinfo(s, &qinf, region);
644 /* read remainder of line */
645 if(sscanf(s, " %u %u " ARG_LL "d %u %u %u %u", &flags, &qdcount, &ttl,
646 &security, &an, &ns, &ar) != 7) {
647 log_warn("error cannot parse numbers: %s", s);
650 rep.flags = (uint16_t)flags;
651 rep.qdcount = (uint16_t)qdcount;
652 rep.ttl = (time_t)ttl;
653 rep.prefetch_ttl = PREFETCH_TTL_CALC(rep.ttl);
654 rep.security = (enum sec_status)security;
655 if(an > RR_COUNT_MAX || ns > RR_COUNT_MAX || ar > RR_COUNT_MAX) {
656 log_warn("error too many rrsets");
657 return 0; /* protect against integer overflow in alloc */
659 rep.an_numrrsets = (size_t)an;
660 rep.ns_numrrsets = (size_t)ns;
661 rep.ar_numrrsets = (size_t)ar;
662 rep.rrset_count = (size_t)an+(size_t)ns+(size_t)ar;
663 rep.rrsets = (struct ub_packed_rrset_key**)regional_alloc_zero(
664 region, sizeof(struct ub_packed_rrset_key*)*rep.rrset_count);
666 /* fill repinfo with references */
667 for(i=0; i<rep.rrset_count; i++) {
668 if(!load_ref(ssl, buf, worker, region, &rep.rrsets[i],
675 return 1; /* skip this one, not all references satisfied */
677 if(!dns_cache_store(&worker->env, &qinf, &rep, 0, 0, 0, NULL, flags)) {
678 log_warn("error out of memory");
684 /** load msg cache */
686 load_msg_cache(SSL* ssl, struct worker* worker)
688 sldns_buffer* buf = worker->env.scratch_buffer;
689 if(!read_fixed(ssl, buf, "START_MSG_CACHE")) return 0;
690 while(ssl_read_buf(ssl, buf) &&
691 strcmp((char*)sldns_buffer_begin(buf), "END_MSG_CACHE")!=0) {
692 if(!load_msg(ssl, buf, worker))
699 load_cache(SSL* ssl, struct worker* worker)
701 if(!load_rrset_cache(ssl, worker))
703 if(!load_msg_cache(ssl, worker))
705 return read_fixed(ssl, worker->env.scratch_buffer, "EOF");
708 /** print details on a delegation point */
710 print_dp_details(SSL* ssl, struct worker* worker, struct delegpt* dp)
713 struct delegpt_addr* a;
714 int lame, dlame, rlame, rto, edns_vs, to, delay,
715 tA = 0, tAAAA = 0, tother = 0;
718 uint8_t edns_lame_known;
719 for(a = dp->target_list; a; a = a->next_target) {
720 addr_to_str(&a->addr, a->addrlen, buf, sizeof(buf));
721 if(!ssl_printf(ssl, "%-16s\t", buf))
724 if(!ssl_printf(ssl, "Address is BOGUS. "))
727 /* lookup in infra cache */
729 entry_ttl = infra_get_host_rto(worker->env.infra_cache,
730 &a->addr, a->addrlen, dp->name, dp->namelen,
731 &ri, &delay, *worker->env.now, &tA, &tAAAA, &tother);
732 if(entry_ttl == -2 && ri.rto >= USEFUL_SERVER_TOP_TIMEOUT) {
733 if(!ssl_printf(ssl, "expired, rto %d msec, tA %d "
734 "tAAAA %d tother %d.\n", ri.rto, tA, tAAAA,
739 if(entry_ttl == -1 || entry_ttl == -2) {
740 if(!ssl_printf(ssl, "not in infra cache.\n"))
742 continue; /* skip stuff not in infra cache */
745 /* uses type_A because most often looked up, but other
746 * lameness won't be reported then */
747 if(!infra_get_lame_rtt(worker->env.infra_cache,
748 &a->addr, a->addrlen, dp->name, dp->namelen,
749 LDNS_RR_TYPE_A, &lame, &dlame, &rlame, &rto,
751 if(!ssl_printf(ssl, "not in infra cache.\n"))
753 continue; /* skip stuff not in infra cache */
755 if(!ssl_printf(ssl, "%s%s%s%srto %d msec, ttl " ARG_LL "d, "
756 "ping %d var %d rtt %d, tA %d, tAAAA %d, tother %d",
757 lame?"LAME ":"", dlame?"NoDNSSEC ":"",
758 a->lame?"AddrWasParentSide ":"",
759 rlame?"NoAuthButRecursive ":"", rto, entry_ttl,
760 ri.srtt, ri.rttvar, rtt_notimeout(&ri),
764 if(!ssl_printf(ssl, ", probedelay %d", delay))
766 if(infra_host(worker->env.infra_cache, &a->addr, a->addrlen,
767 dp->name, dp->namelen, *worker->env.now, &edns_vs,
768 &edns_lame_known, &to)) {
770 if(!ssl_printf(ssl, ", noEDNS%s.",
771 edns_lame_known?" probed":" assumed"))
774 if(!ssl_printf(ssl, ", EDNS %d%s.", edns_vs,
775 edns_lame_known?" probed":" assumed"))
779 if(!ssl_printf(ssl, "\n"))
784 /** print main dp info */
786 print_dp_main(SSL* ssl, struct delegpt* dp, struct dns_msg* msg)
788 size_t i, n_ns, n_miss, n_addr, n_res, n_avail;
792 for(i=0; i<msg->rep->rrset_count; i++) {
793 struct ub_packed_rrset_key* k = msg->rep->rrsets[i];
794 struct packed_rrset_data* d =
795 (struct packed_rrset_data*)k->entry.data;
796 if(d->security == sec_status_bogus) {
797 if(!ssl_printf(ssl, "Address is BOGUS:\n"))
800 if(!dump_rrset(ssl, k, d, 0))
803 delegpt_count_ns(dp, &n_ns, &n_miss);
804 delegpt_count_addr(dp, &n_addr, &n_res, &n_avail);
805 /* since dp has not been used by iterator, all are available*/
806 if(!ssl_printf(ssl, "Delegation with %d names, of which %d "
807 "can be examined to query further addresses.\n"
808 "%sIt provides %d IP addresses.\n",
809 (int)n_ns, (int)n_miss, (dp->bogus?"It is BOGUS. ":""),
814 int print_deleg_lookup(SSL* ssl, struct worker* worker, uint8_t* nm,
815 size_t nmlen, int ATTR_UNUSED(nmlabs))
817 /* deep links into the iterator module */
820 struct regional* region = worker->scratchpad;
822 struct query_info qinfo;
823 struct iter_hints_stub* stub;
824 regional_free_all(region);
826 qinfo.qname_len = nmlen;
827 qinfo.qtype = LDNS_RR_TYPE_A;
828 qinfo.qclass = LDNS_RR_CLASS_IN;
831 if(!ssl_printf(ssl, "The following name servers are used for lookup "
835 dp = forwards_lookup(worker->env.fwds, nm, qinfo.qclass);
837 if(!ssl_printf(ssl, "forwarding request:\n"))
839 print_dp_main(ssl, dp, NULL);
840 print_dp_details(ssl, worker, dp);
845 dp = dns_cache_find_delegation(&worker->env, nm, nmlen,
846 qinfo.qtype, qinfo.qclass, region, &msg,
849 return ssl_printf(ssl, "no delegation from "
850 "cache; goes to configured roots\n");
853 if(iter_dp_is_useless(&qinfo, BIT_RD, dp)) {
854 print_dp_main(ssl, dp, msg);
855 print_dp_details(ssl, worker, dp);
856 if(!ssl_printf(ssl, "cache delegation was "
857 "useless (no IP addresses)\n"))
859 if(dname_is_root(nm)) {
860 /* goes to root config */
861 return ssl_printf(ssl, "no delegation from "
862 "cache; goes to configured roots\n");
864 /* useless, goes up */
867 dname_remove_label(&nm, &nmlen);
869 if(!ssl_printf(ssl, "going up, lookup %s\n", b))
874 stub = hints_lookup_stub(worker->env.hints, nm, qinfo.qclass,
878 if(!ssl_printf(ssl, "The noprime stub servers "
882 if(!ssl_printf(ssl, "The stub is primed "
886 print_dp_main(ssl, stub->dp, NULL);
887 print_dp_details(ssl, worker, stub->dp);
889 print_dp_main(ssl, dp, msg);
890 print_dp_details(ssl, worker, dp);