3 * - RR-type-specific code, and the machinery to call it
6 * This file is part of adns, which is
7 * Copyright (C) 1997-2000,2003,2006 Ian Jackson
8 * Copyright (C) 1999-2000,2003,2006 Tony Finch
9 * Copyright (C) 1991 Massachusetts Institute of Technology
10 * (See the file INSTALL for full details.)
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2, or (at your option)
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software Foundation,
24 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
30 #include <sys/types.h>
31 #include <sys/socket.h>
32 #include <netinet/in.h>
33 #include <arpa/inet.h>
38 #define R_NOMEM return adns_s_nomemory
39 #define CSP_ADDSTR(s) do { \
40 if (!adns__vbuf_appendstr(vb,(s))) R_NOMEM; \
47 * _textdata, _qstring (csp)
52 * _inaddr (pa,cs,di, +search_sortlist, dip_genaddr)
54 * _addr (pap,pa,di,csp,cs,gsz,qs, +search_sortlist_sa,
55 * dip_sockaddr, rrtypes)
58 * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +pap_findaddrs)
61 * _inthostaddr (mf,cs)
66 * _mailbox (pap +pap_mailbox822)
69 * _srv* (qdpl,(pap),pa,mf,di,(csp),cs,postsort)
74 * within each section:
91 static adns_status pap_qstring(const parseinfo *pai, int *cbyte_io, int max,
92 int *len_r, char **str_r) {
93 /* Neither len_r nor str_r may be null.
94 * End of datagram (overrun) is indicated by returning adns_s_invaliddata;
96 const byte *dgram= pai->dgram;
102 if (cbyte >= max) return adns_s_invaliddata;
104 if (cbyte+l > max) return adns_s_invaliddata;
106 str= adns__alloc_interim(pai->qu, l+1);
110 memcpy(str,dgram+cbyte,l);
119 static adns_status csp_qstring(vbuf *vb, const char *dp, int len) {
125 for (cn=0; cn<len; cn++) {
129 } else if (ch == '"') {
131 } else if (ch >= 32 && ch <= 126) {
132 if (!adns__vbuf_append(vb,&ch,1)) R_NOMEM;
134 sprintf(buf,"\\x%02x",ch);
147 static void mf_str(adns_query qu, void *datap) {
150 adns__makefinal_str(qu,rrp);
157 static void mf_intstr(adns_query qu, void *datap) {
158 adns_rr_intstr *rrp= datap;
160 adns__makefinal_str(qu,&rrp->str);
167 static void mf_manyistr(adns_query qu, void *datap) {
168 adns_rr_intstr **rrp= datap;
169 adns_rr_intstr *te, *table;
173 for (tc=0, te= *rrp; te->i >= 0; te++, tc++);
175 adns__makefinal_block(qu,&tablev,sizeof(*te)*(tc+1));
177 for (te= *rrp; te->i >= 0; te++)
178 adns__makefinal_str(qu,&te->str);
185 static adns_status pa_txt(const parseinfo *pai, int cbyte,
186 int max, void *datap) {
187 adns_rr_intstr **rrp= datap, *table, *te;
188 const byte *dgram= pai->dgram;
189 int ti, tc, l, startbyte;
193 if (cbyte >= max) return adns_s_invaliddata;
195 while (cbyte < max) {
200 if (cbyte != max || !tc) return adns_s_invaliddata;
202 table= adns__alloc_interim(pai->qu,sizeof(*table)*(tc+1));
205 for (cbyte=startbyte, ti=0, te=table; ti<tc; ti++, te++) {
206 st= pap_qstring(pai, &cbyte, max, &te->i, &te->str);
209 assert(cbyte == max);
218 static adns_status cs_txt(vbuf *vb, const void *datap) {
219 const adns_rr_intstr *const *rrp= datap;
220 const adns_rr_intstr *current;
224 for (current= *rrp, spc=0; current->i >= 0; current++, spc=1) {
225 if (spc) CSP_ADDSTR(" ");
226 st= csp_qstring(vb,current->str,current->i); if (st) return st;
235 static adns_status cs_hinfo(vbuf *vb, const void *datap) {
236 const adns_rr_intstrpair *rrp= datap;
239 st= csp_qstring(vb,rrp->array[0].str,rrp->array[0].i); if (st) return st;
241 st= csp_qstring(vb,rrp->array[1].str,rrp->array[1].i); if (st) return st;
246 * _inaddr (pa,di,cs +search_sortlist, dip_genaddr)
249 static adns_status pa_inaddr(const parseinfo *pai, int cbyte,
250 int max, void *datap) {
251 struct in_addr *storeto= datap;
253 if (max-cbyte != 4) return adns_s_invaliddata;
254 memcpy(storeto, pai->dgram + cbyte, 4);
258 static int search_sortlist(adns_state ads, int af, const void *ad) {
259 const struct sortlist *slp;
260 const struct in6_addr *a6;
265 if (af == AF_INET6) {
267 if (IN6_IS_ADDR_V4MAPPED(a6)) {
268 a.v4.s_addr = htonl(((unsigned long)a6->s6_addr[12] << 24) |
269 ((unsigned long)a6->s6_addr[13] << 16) |
270 ((unsigned long)a6->s6_addr[14] << 8) |
271 ((unsigned long)a6->s6_addr[15] << 0));
276 for (i=0, slp=ads->sortlist;
278 !(af == slp->ai->af &&
279 slp->ai->matchp(ad, &slp->base, &slp->mask)) &&
280 !(v6mappedp && slp->ai->af == AF_INET &&
281 slp->ai->matchp(&a, &slp->base, &slp->mask));
286 static int dip_genaddr(adns_state ads, int af, const void *a, const void *b) {
289 if (!ads->nsortlist) return 0;
291 ai= search_sortlist(ads,af,a);
292 bi= search_sortlist(ads,af,b);
296 static int di_inaddr(adns_state ads,
297 const void *datap_a, const void *datap_b) {
298 return dip_genaddr(ads,AF_INET,datap_a,datap_b);
301 static adns_status cs_inaddr(vbuf *vb, const void *datap) {
302 const struct in_addr *rrp= datap, rr= *rrp;
305 ia= inet_ntoa(rr); assert(ia);
311 * _in6addr (pa,di,cs)
314 static adns_status pa_in6addr(const parseinfo *pai, int cbyte,
315 int max, void *datap) {
316 struct in6_addr *storeto= datap;
318 if (max-cbyte != 16) return adns_s_invaliddata;
319 memcpy(storeto->s6_addr, pai->dgram + cbyte, 16);
323 static int di_in6addr(adns_state ads,
324 const void *datap_a, const void *datap_b) {
325 return dip_genaddr(ads,AF_INET6,datap_a,datap_b);
328 static adns_status cs_in6addr(vbuf *vb, const void *datap) {
329 char buf[INET6_ADDRSTRLEN];
332 ia= inet_ntop(AF_INET6, datap, buf, sizeof(buf)); assert(ia);
338 * _addr (pap,pa,di,csp,cs,gsz,qs, +search_sortlist_sa, dip_sockaddr,
342 static const typeinfo tinfo_addrsub;
344 /* About CNAME handling in addr queries.
346 * A user-level addr query is translated into a number of protocol-level
347 * queries, and its job is to reassemble the results. This gets tricky if
348 * the answers aren't consistent. In particular, if the answers report
349 * inconsistent indirection via CNAME records (e.g., different CNAMEs, or
350 * some indirect via a CNAME, and some don't) then we have trouble.
352 * Once we've received an answer, even if it was NODATA, we set
353 * adns__qf_addr_answer on the parent query. This will let us detect a
354 * conflict between a no-CNAME-with-NODATA reply and a subsequent CNAME.
356 * If we detect a conflict of any kind, then at least one answer came back
357 * with a CNAME record, so we pick the first such answer (somewhat
358 * arbitrarily) as being the `right' canonical name, and set this in the
359 * parent query's answer->cname slot. We discard address records from the
360 * wrong name. And finally we cancel the outstanding child queries, and
361 * resubmit address queries for the address families we don't yet have, with
362 * adns__qf_addr_cname set so that we know that we're in the fixup state.
365 static adns_status pap_addr(const parseinfo *pai, int rrty, size_t rrsz,
366 int *cbyte_io, int max, adns_rr_addr *storeto)
368 const byte *dgram= pai->dgram;
369 int af, addrlen, salen;
370 struct in6_addr v6map;
371 const void *oaddr = dgram + *cbyte_io;
372 int avail = max - *cbyte_io;
378 if (pai->qu->flags & adns_qf_domapv4) {
379 if (avail < 4) return adns_s_invaliddata;
380 memset(v6map.s6_addr + 0, 0x00, 10);
381 memset(v6map.s6_addr + 10, 0xff, 2);
382 memcpy(v6map.s6_addr + 12, oaddr, 4);
383 oaddr = v6map.s6_addr; avail = sizeof(v6map.s6_addr);
384 if (step < 0) step = 4;
387 af = AF_INET; addrlen = 4;
388 addrp = &storeto->addr.inet.sin_addr;
389 salen = sizeof(storeto->addr.inet);
393 af = AF_INET6; addrlen = 16;
394 addrp = storeto->addr.inet6.sin6_addr.s6_addr;
395 salen = sizeof(storeto->addr.inet6);
400 assert(offsetof(adns_rr_addr, addr) + salen <= rrsz);
401 if (addrlen < avail) return adns_s_invaliddata;
402 if (step < 0) step = addrlen;
404 memset(&storeto->addr, 0, salen);
405 storeto->len = salen;
406 storeto->addr.sa.sa_family = af;
407 memcpy(addrp, oaddr, addrlen);
412 static adns_status pa_addr(const parseinfo *pai, int cbyte,
413 int max, void *datap) {
414 int err = pap_addr(pai, pai->qu->answer->type & adns_rrt_typemask,
415 pai->qu->answer->rrsz, &cbyte, max, datap);
417 if (cbyte != max) return adns_s_invaliddata;
421 static int search_sortlist_sa(adns_state ads, const struct sockaddr *sa)
423 const afinfo *ai = 0;
425 switch (sa->sa_family) {
426 case AF_INET: ai = &adns__inet_afinfo; break;
427 case AF_INET6: ai = &adns__inet6_afinfo; break;
431 return search_sortlist(ads, sa->sa_family, ai->sockaddr_to_inaddr(sa));
434 static int dip_sockaddr(adns_state ads,
435 const struct sockaddr *sa,
436 const struct sockaddr *sb)
438 if (!ads->sortlist) return 0;
439 return search_sortlist_sa(ads, sa) > search_sortlist_sa(ads, sb);
442 static int di_addr(adns_state ads, const void *datap_a, const void *datap_b) {
443 const adns_rr_addr *ap= datap_a, *bp= datap_b;
445 return dip_sockaddr(ads, &ap->addr.sa, &bp->addr.sa);
448 static int div_addr(void *context, const void *datap_a, const void *datap_b) {
449 const adns_state ads= context;
451 return di_addr(ads, datap_a, datap_b);
454 static adns_status csp_addr(vbuf *vb, const adns_rr_addr *rrp) {
458 switch (rrp->addr.inet.sin_family) {
463 CSP_ADDSTR("INET6 ");
466 err= getnameinfo(&rrp->addr.sa, rrp->len, buf, sizeof(buf), 0, 0,
467 NI_NUMERICHOST); assert(!err);
471 sprintf(buf,"AF=%u",rrp->addr.sa.sa_family);
478 static adns_status cs_addr(vbuf *vb, const void *datap) {
479 const adns_rr_addr *rrp= datap;
481 return csp_addr(vb,rrp);
484 static void addr_rrtypes(adns_state ads, adns_rrtype type,
486 adns_rrtype *rrty, size_t *nrrty)
489 adns_rrtype qtf = type & adns__qtf_deref;
490 adns_queryflags permitaf = 0, hackaf = 0;
492 if (!(qf & (adns_qf_ipv4_only | adns_qf_ipv6_only)))
493 qf |= adns_qf_ipv4_only | adns_qf_ipv6_only;
494 if (!(type & adns__qtf_bigaddr) || !(type & adns__qtf_manyaf))
495 qf = (qf & adns__qf_afmask) | adns_qf_ipv4_only;
496 else if (ads->iflags & adns_if_afmask) {
497 if (ads->iflags & adns_if_af_v4only) {
498 permitaf |= adns_qf_ipv4_only;
499 hackaf |= adns_qf_domapv4;
501 if (ads->iflags & adns_if_af_v6only)
502 permitaf |= adns_qf_ipv6_only;
504 qf &= hackaf | permitaf | ~adns__qf_afmask;
507 if (qf & adns_qf_ipv4_only) rrty[n++] = adns_r_a | qtf;
508 if (qf & adns_qf_ipv6_only) rrty[n++] = adns_r_aaaa | qtf;
513 static int gsz_addr(adns_rrtype type)
515 return type & adns__qtf_bigaddr ?
516 sizeof(adns_rr_addr) : sizeof(adns_rr_addr_v4only);
519 static adns_status append_addrs(adns_query qu, adns_query from, size_t rrsz,
520 adns_rr_addr **dp, int *dlen,
521 const adns_rr_addr *sp, int slen)
523 size_t drrsz = *dlen*rrsz, srrsz = slen*rrsz;
526 if (!slen) return adns_s_ok;
527 p = adns__alloc_interim(qu, drrsz + srrsz);
530 memcpy(p, *dp, drrsz);
531 adns__free_interim(qu, *dp);
533 memcpy(p + drrsz, sp, srrsz);
535 *dp = (adns_rr_addr *)p;
536 if (from && qu->expires > from->expires) qu->expires = from->expires;
540 static void icb_addr(adns_query parent, adns_query child);
542 static void addr_subqueries(adns_query qu, struct timeval now,
543 const byte *qd_dgram, int qd_dglen)
547 adns_queryflags qf =qu->flags & ~adns_qf_search;
550 /* This always makes child queries, even if there's only the one. This
551 * seems wasteful, but there's only one case where it'd be safe -- namely
552 * IPv4-only -- and that's not the case I want to optimize.
554 memset(&ctx, 0, sizeof(ctx));
555 ctx.callback = icb_addr;
556 qu->ctx.tinfo.addr.onrrty = qu->ctx.tinfo.addr.nrrty;
557 for (i = 0; i < qu->ctx.tinfo.addr.nrrty; i++) {
558 err = adns__mkquery_frdgram(qu->ads, &qu->vb, &id, qd_dgram, qd_dglen,
559 DNS_HDRSIZE, qu->ctx.tinfo.addr.rrty[i], qf);
560 if (err) goto x_error;
561 err = adns__internal_submit(qu->ads, &cqu, &tinfo_addrsub,
562 qu->ctx.tinfo.addr.rrty[i],
563 &qu->vb, id, qf, now, &ctx);
564 if (err) goto x_error;
565 cqu->answer->rrsz = qu->answer->rrsz;
567 LIST_LINK_TAIL_PART(qu->children, cqu,siblings.);
569 qu->state = query_childw;
570 LIST_LINK_TAIL(qu->ads->childw, qu);
574 adns__query_fail(qu, err);
577 static adns_status addr_submit(adns_query parent, adns_query *query_r,
578 vbuf *qumsg_vb, int id,
579 const adns_rrtype *rrty, size_t nrrty,
580 adns_queryflags flags, struct timeval now,
583 /* This is effectively a substitute for adns__internal_submit, intended for
584 * the case where the caller (possibly) only wants a subset of the
585 * available record types. The memory management and callback rules are
586 * the same as for adns__internal_submit.
588 * Some differences: the query is linked onto the parent's children list
589 * before exit (though the parent's state is not changed, and it is not
590 * linked into the childw list queue).
593 adns_state ads = parent->ads;
597 (adns_r_addr & adns_rrt_reprmask) |
598 (parent->answer->type & ~adns_rrt_reprmask);
600 err = adns__internal_submit(ads, &qu, adns__findtype(adns_r_addr),
601 type, qumsg_vb, id, flags | adns__qf_nosend,
606 LIST_LINK_TAIL_PART(parent->children, qu, siblings.);
608 memcpy(qu->ctx.tinfo.addr.rrty, rrty, nrrty*sizeof(*rrty));
609 qu->ctx.tinfo.addr.nrrty = nrrty;
610 addr_subqueries(qu, now, qu->query_dgram, qu->query_dglen);
615 static adns_status copy_cname_from_child(adns_query parent, adns_query child)
617 adns_answer *pans = parent->answer, *cans = child->answer;
618 size_t n = strlen(cans->cname) + 1;
620 pans->cname = adns__alloc_preserved(parent, n);
621 if (!pans->cname) R_NOMEM;
622 memcpy(pans->cname, cans->cname, n);
626 static void done_addr_type(adns_query qu, adns_rrtype type)
631 i < qu->ctx.tinfo.addr.nrrty &&
632 type != qu->ctx.tinfo.addr.rrty[i];
634 assert(i < qu->ctx.tinfo.addr.nrrty);
635 qu->ctx.tinfo.addr.rrty[i] =
636 qu->ctx.tinfo.addr.rrty[--qu->ctx.tinfo.addr.nrrty];
637 qu->ctx.tinfo.addr.rrty[qu->ctx.tinfo.addr.nrrty] = type;
640 static void icb_addr(adns_query parent, adns_query child)
642 adns_state ads = parent->ads;
643 adns_answer *pans = parent->answer, *cans = child->answer;
648 if (!(child->flags & adns__qf_addr_cname) &&
649 (parent->flags & adns__qf_addr_answer) &&
650 (!!pans->cname != !!cans->cname ||
651 (pans->cname && strcmp(pans->cname, cans->cname) != 0))) {
652 /* We've detected an inconsistency in CNAME records, and must deploy
657 /* The child has a CNAME record, but the parent doesn't. We must
658 * discard all of the parent's addresses, and substitute the child's.
661 assert(pans->rrsz == cans->rrsz);
662 adns__free_interim(parent, pans->rrs.bytes);
663 adns__transfer_interim(child, parent, cans->rrs.bytes);
664 pans->rrs.bytes = cans->rrs.bytes;
665 pans->nrrs = cans->nrrs;
666 parent->ctx.tinfo.addr.nrrty = parent->ctx.tinfo.addr.onrrty;
667 done_addr_type(parent, cans->type);
668 err = copy_cname_from_child(parent, child); if (err) goto x_err;
671 /* We've settled on the CNAME (now) associated with the parent, which
672 * already has appropriate address records. Build a query datagram for
673 * this name so that we can issue child queries for the missing address
674 * families. The child's vbuf looks handy for this.
676 err = adns__mkquery(ads, &child->vb, &id, pans->cname,
677 strlen(pans->cname), adns__findtype(adns_r_addr),
678 adns_r_addr, parent->flags);
681 /* Now cancel the remaining children, and try again with the CNAME we've
684 adns__cancel_children(parent);
685 if (gettimeofday(&now, 0)) goto x_gtod;
686 addr_subqueries(parent, now, child->vb.buf, child->vb.used);
690 if (cans->cname && !pans->cname) {
691 err = copy_cname_from_child(parent, child);
695 if ((parent->flags & adns_qf_search) &&
696 !pans->cname && cans->status == adns_s_nxdomain) {
697 /* We're searching a list of suffixes, this is the first answer, and it
698 * tells us that the name doesn't exist. Try the next one.
701 if (parent->expires > child->expires) parent->expires = child->expires;
702 adns__cancel_children(parent);
703 adns__free_interim(parent, pans->rrs.bytes);
704 pans->rrs.bytes = 0; pans->nrrs = 0;
705 if (gettimeofday(&now, 0)) goto x_gtod;
706 adns__search_next(ads, parent, now);
710 if (cans->status && cans->status != adns_s_nodata)
711 { err = cans->status; goto x_err; }
713 assert(pans->rrsz == cans->rrsz);
714 err = append_addrs(parent, child, pans->rrsz,
715 &pans->rrs.addr, &pans->nrrs,
716 cans->rrs.addr, cans->nrrs);
718 done_addr_type(parent, cans->type);
720 if (parent->children.head) LIST_LINK_TAIL(ads->childw, parent);
721 else if (!pans->nrrs) adns__query_fail(parent, adns_s_nodata);
722 else adns__query_done(parent);
723 parent->flags |= adns__qf_addr_answer;
727 adns__diag(ads, -1, parent, "gettimeofday failed: %s", strerror(errno));
728 err = adns_s_systemfail;
732 adns__query_fail(parent, err);
735 static void qs_addr(adns_query qu, struct timeval now)
737 addr_rrtypes(qu->ads, qu->answer->type, qu->flags,
738 qu->ctx.tinfo.addr.rrty, &qu->ctx.tinfo.addr.nrrty);
739 addr_subqueries(qu, now, qu->query_dgram, qu->query_dglen);
743 * _domain (pap,csp,cs)
747 static adns_status pap_domain(const parseinfo *pai, int *cbyte_io, int max,
748 char **domain_r, parsedomain_flags flags) {
752 st= adns__parse_domain(pai->qu->ads, pai->serv, pai->qu, &pai->qu->vb, flags,
753 pai->dgram,pai->dglen, cbyte_io, max);
755 if (!pai->qu->vb.used) return adns_s_invaliddata;
757 dm= adns__alloc_interim(pai->qu, pai->qu->vb.used+1);
760 dm[pai->qu->vb.used]= 0;
761 memcpy(dm,pai->qu->vb.buf,pai->qu->vb.used);
767 static adns_status csp_domain(vbuf *vb, const char *domain) {
769 if (!*domain) CSP_ADDSTR(".");
773 static adns_status cs_domain(vbuf *vb, const void *datap) {
774 const char *const *domainp= datap;
775 return csp_domain(vb,*domainp);
778 static adns_status pa_dom_raw(const parseinfo *pai, int cbyte,
779 int max, void *datap) {
783 st= pap_domain(pai, &cbyte, max, rrp, pdf_quoteok);
786 if (cbyte != max) return adns_s_invaliddata;
794 static adns_status pa_host_raw(const parseinfo *pai, int cbyte,
795 int max, void *datap) {
799 st= pap_domain(pai, &cbyte, max, rrp,
800 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
803 if (cbyte != max) return adns_s_invaliddata;
808 * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +icb_hostaddr, pap_findaddrs)
811 static adns_status pap_findaddrs(const parseinfo *pai, adns_rr_hostaddr *ha,
812 adns_rrtype *rrty, size_t *nrrty_io,
813 size_t addrsz, int *cbyte_io, int count,
816 int type, class, rdlen, rdend, rdstart, ownermatched;
817 size_t nrrty = *nrrty_io;
821 for (rri=0, naddrs=0; rri<count; rri++) {
822 st= adns__findrr_anychk(pai->qu, pai->serv, pai->dgram,
823 pai->dglen, cbyte_io,
824 &type, &class, &ttl, &rdlen, &rdstart,
825 pai->dgram, pai->dglen, dmstart, &ownermatched);
827 if (!ownermatched || class != DNS_CLASS_IN) continue;
828 for (j = 0; j < nrrty && type != (rrty[j] & adns_rrt_typemask); j++);
829 if (j >= nrrty) continue;
832 adns_rrtype t = rrty[j];
833 rrty[j] = rrty[*nrrty_io];
836 if (!adns__vbuf_ensure(&pai->qu->vb, (naddrs+1)*addrsz)) R_NOMEM;
837 adns__update_expires(pai->qu,ttl,pai->now);
838 rdend = rdstart + rdlen;
839 st= pap_addr(pai, type, addrsz, &rdstart, rdend,
840 (adns_rr_addr *)(pai->qu->vb.buf + naddrs*addrsz));
842 if (rdstart != rdend) return adns_s_invaliddata;
846 st = append_addrs(pai->qu, 0, addrsz, &ha->addrs, &ha->naddrs,
847 (const adns_rr_addr *)pai->qu->vb.buf, naddrs);
849 ha->astatus= adns_s_ok;
852 adns__isort(ha->addrs, naddrs, addrsz, pai->qu->vb.buf,
859 static void icb_hostaddr(adns_query parent, adns_query child) {
860 adns_answer *cans= child->answer;
861 adns_rr_hostaddr *rrp= child->ctx.pinfo.hostaddr;
862 adns_state ads= parent->ads;
864 size_t addrsz = gsz_addr(parent->answer->type);
866 st= cans->status == adns_s_nodata ? adns_s_ok : cans->status;
869 assert(addrsz == cans->rrsz);
870 st = append_addrs(parent, child, addrsz,
871 &rrp->addrs, &rrp->naddrs,
872 cans->rrs.addr, cans->nrrs);
874 if (!rrp->naddrs) { st = adns_s_nodata; goto done; }
876 if (!adns__vbuf_ensure(&parent->vb, addrsz))
877 { st = adns_s_nomemory; goto done; }
878 adns__isort(rrp->addrs, rrp->naddrs, addrsz, parent->vb.buf,
883 adns__free_interim(parent, rrp->addrs);
884 rrp->naddrs= (st>0 && st<=adns_s_max_tempfail) ? -1 : 0;
888 if (parent->children.head) {
889 LIST_LINK_TAIL(ads->childw,parent);
891 adns__query_done(parent);
895 static adns_status pap_hostaddr(const parseinfo *pai, int *cbyte_io,
896 int max, adns_rr_hostaddr *rrp) {
902 adns_queryflags nflags;
903 adns_rrtype rrty[ADDR_MAXRRTYPES];
905 size_t addrsz = gsz_addr(pai->qu->answer->type);
907 dmstart= cbyte= *cbyte_io;
908 st= pap_domain(pai, &cbyte, max, &rrp->host,
909 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
913 rrp->astatus= adns_s_ok;
919 addr_rrtypes(pai->ads, pai->qu->answer->type,
920 pai->qu->flags, rrty, &nrrty);
922 st= pap_findaddrs(pai, rrp, rrty, &nrrty, addrsz,
923 &cbyte, pai->nscount, dmstart);
925 if (!nrrty) return adns_s_ok;
927 st= pap_findaddrs(pai, rrp, rrty, &nrrty, addrsz,
928 &cbyte, pai->arcount, dmstart);
930 if (!nrrty) return adns_s_ok;
932 st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id,
933 pai->dgram, pai->dglen, dmstart,
934 adns_r_addr, adns_qf_quoteok_query);
938 ctx.callback= icb_hostaddr;
939 ctx.pinfo.hostaddr= rrp;
941 nflags= adns_qf_quoteok_query | (pai->qu->flags & adns__qf_afmask);
942 if (!(pai->qu->flags & adns_qf_cname_loose)) nflags |= adns_qf_cname_forbid;
944 st= addr_submit(pai->qu, &nqu, &pai->qu->vb, id, rrty, nrrty,
945 nflags, pai->now, &ctx);
951 static adns_status pa_hostaddr(const parseinfo *pai, int cbyte,
952 int max, void *datap) {
953 adns_rr_hostaddr *rrp= datap;
956 st= pap_hostaddr(pai, &cbyte, max, rrp);
958 if (cbyte != max) return adns_s_invaliddata;
963 static int dip_hostaddr(adns_state ads,
964 const adns_rr_hostaddr *ap, const adns_rr_hostaddr *bp) {
965 if (ap->astatus != bp->astatus) return ap->astatus;
966 if (ap->astatus) return 0;
968 return dip_sockaddr(ads, &ap->addrs[0].addr.sa, &bp->addrs[0].addr.sa);
971 static int di_hostaddr(adns_state ads,
972 const void *datap_a, const void *datap_b) {
973 const adns_rr_hostaddr *ap= datap_a, *bp= datap_b;
975 return dip_hostaddr(ads, ap,bp);
978 static void mfp_hostaddr(adns_query qu, adns_rr_hostaddr *rrp) {
980 size_t sz = qu->answer->type & adns__qtf_bigaddr ?
981 sizeof(adns_rr_addr) : sizeof(adns_rr_addr_v4only);
982 adns__makefinal_str(qu,&rrp->host);
984 adns__makefinal_block(qu, &tablev, rrp->naddrs*sz);
988 static void mf_hostaddr(adns_query qu, void *datap) {
989 adns_rr_hostaddr *rrp= datap;
991 mfp_hostaddr(qu,rrp);
994 static adns_status csp_hostaddr(vbuf *vb, const adns_rr_hostaddr *rrp) {
1000 st= csp_domain(vb,rrp->host); if (st) return st;
1003 CSP_ADDSTR(adns_errtypeabbrev(rrp->astatus));
1005 sprintf(buf," %d ",rrp->astatus);
1008 CSP_ADDSTR(adns_errabbrev(rrp->astatus));
1011 errstr= adns_strerror(rrp->astatus);
1012 st= csp_qstring(vb,errstr,strlen(errstr)); if (st) return st;
1014 if (rrp->naddrs >= 0) {
1016 for (i=0; i<rrp->naddrs; i++) {
1018 st= csp_addr(vb,&rrp->addrs[i]);
1027 static adns_status cs_hostaddr(vbuf *vb, const void *datap) {
1028 const adns_rr_hostaddr *rrp= datap;
1030 return csp_hostaddr(vb,rrp);
1037 static adns_status pa_mx_raw(const parseinfo *pai, int cbyte,
1038 int max, void *datap) {
1039 const byte *dgram= pai->dgram;
1040 adns_rr_intstr *rrp= datap;
1044 if (cbyte+2 > max) return adns_s_invaliddata;
1047 st= pap_domain(pai, &cbyte, max, &rrp->str,
1048 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
1051 if (cbyte != max) return adns_s_invaliddata;
1055 static int di_mx_raw(adns_state ads, const void *datap_a, const void *datap_b) {
1056 const adns_rr_intstr *ap= datap_a, *bp= datap_b;
1058 if (ap->i < bp->i) return 0;
1059 if (ap->i > bp->i) return 1;
1067 static adns_status pa_mx(const parseinfo *pai, int cbyte,
1068 int max, void *datap) {
1069 const byte *dgram= pai->dgram;
1070 adns_rr_inthostaddr *rrp= datap;
1074 if (cbyte+2 > max) return adns_s_invaliddata;
1077 st= pap_hostaddr(pai, &cbyte, max, &rrp->ha);
1080 if (cbyte != max) return adns_s_invaliddata;
1084 static int di_mx(adns_state ads, const void *datap_a, const void *datap_b) {
1085 const adns_rr_inthostaddr *ap= datap_a, *bp= datap_b;
1087 if (ap->i < bp->i) return 0;
1088 if (ap->i > bp->i) return 1;
1089 return dip_hostaddr(ads, &ap->ha, &bp->ha);
1093 * _inthostaddr (mf,cs)
1096 static void mf_inthostaddr(adns_query qu, void *datap) {
1097 adns_rr_inthostaddr *rrp= datap;
1099 mfp_hostaddr(qu,&rrp->ha);
1102 static adns_status cs_inthostaddr(vbuf *vb, const void *datap) {
1103 const adns_rr_inthostaddr *rrp= datap;
1106 sprintf(buf,"%u ",rrp->i);
1109 return csp_hostaddr(vb,&rrp->ha);
1116 static adns_status cs_inthost(vbuf *vb, const void *datap) {
1117 const adns_rr_intstr *rrp= datap;
1120 sprintf(buf,"%u ",rrp->i);
1122 return csp_domain(vb,rrp->str);
1126 * _ptr (pa, +icb_ptr)
1129 static void icb_ptr(adns_query parent, adns_query child) {
1130 adns_answer *cans= child->answer;
1131 const union gen_addr *queried;
1132 const unsigned char *found;
1133 adns_state ads= parent->ads;
1136 if (cans->status == adns_s_nxdomain || cans->status == adns_s_nodata) {
1137 adns__query_fail(parent,adns_s_inconsistent);
1139 } else if (cans->status) {
1140 adns__query_fail(parent,cans->status);
1144 queried= &parent->ctx.pinfo.ptr_parent_addr.addr;
1145 for (i=0, found=cans->rrs.bytes; i<cans->nrrs; i++, found += cans->rrsz) {
1146 if (!memcmp(queried,found,cans->rrsz)) {
1147 if (!parent->children.head) {
1148 adns__query_done(parent);
1151 LIST_LINK_TAIL(ads->childw,parent);
1157 adns__query_fail(parent,adns_s_inconsistent);
1160 static adns_status pa_ptr(const parseinfo *pai, int dmstart,
1161 int max, void *datap) {
1162 static const struct {
1164 const char *const tail[3];
1165 } expectdomain[] = {
1166 { &adns__inet_afinfo, { DNS_INADDR_ARPA, 0 } },
1167 { &adns__inet6_afinfo, { DNS_IP6_ARPA, 0 } }
1169 enum { n_ed = sizeof(expectdomain)/sizeof(expectdomain[0]) };
1173 struct afinfo_addr *ap;
1174 findlabel_state fls;
1176 int cbyte, i, j, foundj = -1, lablen, labstart, id, f, ac;
1182 st= pap_domain(pai, &cbyte, max, rrp,
1183 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
1185 if (cbyte != max) return adns_s_invaliddata;
1187 ap= &pai->qu->ctx.pinfo.ptr_parent_addr;
1189 adns__findlabel_start(&fls, pai->ads, -1, pai->qu,
1190 pai->qu->query_dgram, pai->qu->query_dglen,
1191 pai->qu->query_dglen, DNS_HDRSIZE, 0);
1193 f = (1 << n_ed) - 1; /* superposition of address types */
1195 st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st);
1196 if (lablen <= 0) break;
1197 for (j = 0; j < n_ed; j++) {
1198 if (!(f & (1 << j))) continue;
1199 if (i < expectdomain[j].ai->nrevcomp) {
1200 ac = expectdomain[j].ai->rev_parsecomp(
1201 pai->qu->query_dgram + labstart, lablen);
1202 if (ac < 0) goto mismatch;
1203 assert(i < sizeof(ipv[j]));
1206 tp = expectdomain[j].tail[i - expectdomain[j].ai->nrevcomp];
1208 strncmp(pai->qu->query_dgram + labstart, tp, lablen) != 0 ||
1216 if (!f) return adns_s_querydomainwrong;
1220 if (lablen < 0) return adns_s_querydomainwrong;
1221 for (j = 0; j < n_ed; j++) {
1222 if (!(f & (1 << j))) continue;
1223 if (i >= expectdomain[j].ai->nrevcomp &&
1224 !expectdomain[j].tail[i - expectdomain[j].ai->nrevcomp])
1225 { foundj = j; continue; }
1227 if (!f) return adns_s_querydomainwrong;
1229 assert(foundj >= 0 && f == (1 << foundj)); /* collapsed to a single type */
1231 ap->ai = expectdomain[foundj].ai;
1232 ap->ai->rev_mkaddr(&ap->addr, ipv[foundj]);
1235 st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id,
1236 pai->dgram, pai->dglen, dmstart,
1237 ap->ai->rrtype, adns_qf_quoteok_query);
1241 ctx.callback= icb_ptr;
1242 memset(&ctx.pinfo,0,sizeof(ctx.pinfo));
1243 memset(&ctx.tinfo,0,sizeof(ctx.tinfo));
1244 st= adns__internal_submit(pai->ads, &nqu, adns__findtype(ap->ai->rrtype),
1245 ap->ai->rrtype, &pai->qu->vb, id,
1246 adns_qf_quoteok_query, pai->now, &ctx);
1249 nqu->parent= pai->qu;
1250 LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.);
1258 static void mf_strpair(adns_query qu, void *datap) {
1259 adns_rr_strpair *rrp= datap;
1261 adns__makefinal_str(qu,&rrp->array[0]);
1262 adns__makefinal_str(qu,&rrp->array[1]);
1269 static void mf_intstrpair(adns_query qu, void *datap) {
1270 adns_rr_intstrpair *rrp= datap;
1272 adns__makefinal_str(qu,&rrp->array[0].str);
1273 adns__makefinal_str(qu,&rrp->array[1].str);
1280 static adns_status pa_hinfo(const parseinfo *pai, int cbyte,
1281 int max, void *datap) {
1282 adns_rr_intstrpair *rrp= datap;
1286 for (i=0; i<2; i++) {
1287 st= pap_qstring(pai, &cbyte, max, &rrp->array[i].i, &rrp->array[i].str);
1291 if (cbyte != max) return adns_s_invaliddata;
1300 static adns_status pap_mailbox822(const parseinfo *pai,
1301 int *cbyte_io, int max, char **mb_r) {
1302 int lablen, labstart, i, needquote, c, r, neednorm;
1303 const unsigned char *p;
1305 findlabel_state fls;
1311 adns__findlabel_start(&fls, pai->ads,
1313 pai->dgram, pai->dglen, max,
1314 *cbyte_io, cbyte_io);
1315 st= adns__findlabel_next(&fls,&lablen,&labstart);
1317 adns__vbuf_appendstr(vb,".");
1322 for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++) {
1324 if ((c&~128) < 32 || (c&~128) == 127) return adns_s_invaliddata;
1325 if (c == '.' && !neednorm) neednorm= 1;
1326 else if (c==' ' || c>=127 || ctype_822special(c)) needquote++;
1330 if (needquote || neednorm) {
1331 r= adns__vbuf_ensure(vb, lablen+needquote+4); if (!r) R_NOMEM;
1332 adns__vbuf_appendq(vb,"\"",1);
1333 for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++, p++) {
1335 if (c == '"' || c=='\\') adns__vbuf_appendq(vb,"\\",1);
1336 adns__vbuf_appendq(vb,p,1);
1338 adns__vbuf_appendq(vb,"\"",1);
1340 r= adns__vbuf_append(vb, pai->dgram+labstart, lablen); if (!r) R_NOMEM;
1343 r= adns__vbuf_appendstr(vb,"@"); if (!r) R_NOMEM;
1345 st= adns__parse_domain_more(&fls,pai->ads, pai->qu,vb,0, pai->dgram);
1349 str= adns__alloc_interim(pai->qu, vb->used+1); if (!str) R_NOMEM;
1350 memcpy(str,vb->buf,vb->used);
1356 static adns_status pap_mailbox(const parseinfo *pai, int *cbyte_io, int max,
1358 if (pai->qu->typei->typekey & adns__qtf_mail822) {
1359 return pap_mailbox822(pai, cbyte_io, max, mb_r);
1361 return pap_domain(pai, cbyte_io, max, mb_r, pdf_quoteok);
1365 static adns_status csp_mailbox(vbuf *vb, const char *mailbox) {
1366 return csp_domain(vb,mailbox);
1373 static adns_status pa_rp(const parseinfo *pai, int cbyte,
1374 int max, void *datap) {
1375 adns_rr_strpair *rrp= datap;
1378 st= pap_mailbox(pai, &cbyte, max, &rrp->array[0]);
1381 st= pap_domain(pai, &cbyte, max, &rrp->array[1], pdf_quoteok);
1384 if (cbyte != max) return adns_s_invaliddata;
1388 static adns_status cs_rp(vbuf *vb, const void *datap) {
1389 const adns_rr_strpair *rrp= datap;
1392 st= csp_mailbox(vb,rrp->array[0]); if (st) return st;
1394 st= csp_domain(vb,rrp->array[1]); if (st) return st;
1403 static adns_status pa_soa(const parseinfo *pai, int cbyte,
1404 int max, void *datap) {
1405 adns_rr_soa *rrp= datap;
1406 const byte *dgram= pai->dgram;
1410 st= pap_domain(pai, &cbyte, max, &rrp->mname,
1411 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
1414 st= pap_mailbox(pai, &cbyte, max, &rrp->rname);
1417 if (cbyte+20 != max) return adns_s_invaliddata;
1419 for (i=0; i<5; i++) {
1422 (&rrp->serial)[i]= (msw<<16) | lsw;
1428 static void mf_soa(adns_query qu, void *datap) {
1429 adns_rr_soa *rrp= datap;
1431 adns__makefinal_str(qu,&rrp->mname);
1432 adns__makefinal_str(qu,&rrp->rname);
1435 static adns_status cs_soa(vbuf *vb, const void *datap) {
1436 const adns_rr_soa *rrp= datap;
1441 st= csp_domain(vb,rrp->mname); if (st) return st;
1443 st= csp_mailbox(vb,rrp->rname); if (st) return st;
1445 for (i=0; i<5; i++) {
1446 sprintf(buf," %lu",(&rrp->serial)[i]);
1454 * _srv* (pa*2,di,cs*2,qdpl,postsort)
1457 static adns_status qdpl_srv(adns_state ads,
1458 const char **p_io, const char *pe, int labelnum,
1459 char label_r[DNS_MAXDOMAIN], int *ll_io,
1460 adns_queryflags flags,
1461 const typeinfo *typei) {
1466 if (labelnum < 2 && !(flags & adns_qf_quoteok_query)) {
1467 useflags= adns_qf_quoteok_query;
1473 st= adns__qdpl_normal(ads, p_io,pe, labelnum,label_r, ll_io, useflags,typei);
1478 if (!ll || label_r[0]!='_')
1479 return adns_s_querydomaininvalid;
1480 if (memchr(p_orig+1, '\\', pe - (p_orig+1)))
1481 return adns_s_querydomaininvalid;
1486 static adns_status pap_srv_begin(const parseinfo *pai, int *cbyte_io, int max,
1488 /* might be adns_rr_srvraw* */) {
1489 const byte *dgram= pai->dgram;
1493 if ((*cbyte_io += 6) > max) return adns_s_invaliddata;
1495 rrp->priority= GET_W(cbyte, ti);
1496 rrp->weight= GET_W(cbyte, ti);
1497 rrp->port= GET_W(cbyte, ti);
1501 static adns_status pa_srvraw(const parseinfo *pai, int cbyte,
1502 int max, void *datap) {
1503 adns_rr_srvraw *rrp= datap;
1506 st= pap_srv_begin(pai,&cbyte,max,datap);
1509 st= pap_domain(pai, &cbyte, max, &rrp->host,
1510 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
1513 if (cbyte != max) return adns_s_invaliddata;
1517 static adns_status pa_srvha(const parseinfo *pai, int cbyte,
1518 int max, void *datap) {
1519 adns_rr_srvha *rrp= datap;
1522 st= pap_srv_begin(pai,&cbyte,max,datap); if (st) return st;
1523 st= pap_hostaddr(pai, &cbyte, max, &rrp->ha); if (st) return st;
1524 if (cbyte != max) return adns_s_invaliddata;
1528 static void mf_srvraw(adns_query qu, void *datap) {
1529 adns_rr_srvraw *rrp= datap;
1530 adns__makefinal_str(qu, &rrp->host);
1533 static void mf_srvha(adns_query qu, void *datap) {
1534 adns_rr_srvha *rrp= datap;
1535 mfp_hostaddr(qu,&rrp->ha);
1538 static int di_srv(adns_state ads, const void *datap_a, const void *datap_b) {
1539 const adns_rr_srvraw *ap= datap_a, *bp= datap_b;
1540 /* might be const adns_rr_svhostaddr* */
1542 if (ap->priority < bp->priority) return 0;
1543 if (ap->priority > bp->priority) return 1;
1547 static adns_status csp_srv_begin(vbuf *vb, const adns_rr_srvha *rrp
1548 /* might be adns_rr_srvraw* */) {
1550 sprintf(buf,"%u %u %u ", rrp->priority, rrp->weight, rrp->port);
1555 static adns_status cs_srvraw(vbuf *vb, const void *datap) {
1556 const adns_rr_srvraw *rrp= datap;
1559 st= csp_srv_begin(vb,(const void*)rrp); if (st) return st;
1560 return csp_domain(vb,rrp->host);
1563 static adns_status cs_srvha(vbuf *vb, const void *datap) {
1564 const adns_rr_srvha *rrp= datap;
1567 st= csp_srv_begin(vb,(const void*)datap); if (st) return st;
1568 return csp_hostaddr(vb,&rrp->ha);
1571 static void postsort_srv(adns_state ads, void *array, int nrrs,
1572 const struct typeinfo *typei) {
1573 /* we treat everything in the array as if it were an adns_rr_srvha
1574 * even though the array might be of adns_rr_srvraw. That's OK
1575 * because they have the same prefix, which is all we access.
1576 * We use typei->rrsz, too, rather than naive array indexing, of course.
1578 char *workbegin, *workend, *search, *arrayend;
1579 const adns_rr_srvha *rr;
1580 union { adns_rr_srvha ha; adns_rr_srvraw raw; } rrtmp;
1581 int cpriority, totalweight, runtotal;
1584 for (workbegin= array, arrayend= workbegin + typei->rrsz * nrrs;
1585 workbegin < arrayend;
1586 workbegin= workend) {
1587 cpriority= (rr=(void*)workbegin)->priority;
1589 for (workend= workbegin, totalweight= 0;
1590 workend < arrayend && (rr=(void*)workend)->priority == cpriority;
1591 workend += typei->rrsz) {
1592 totalweight += rr->weight;
1595 /* Now workbegin..(workend-1) incl. are exactly all of the RRs of
1596 * cpriority. From now on, workbegin points to the `remaining'
1597 * records: we select one record at a time (RFC2782 `Usage rules'
1598 * and `Format of the SRV RR' subsection `Weight') to place at
1599 * workbegin (swapping with the one that was there, and then
1600 * advance workbegin. */
1602 workbegin + typei->rrsz < workend; /* don't bother if just one */
1603 workbegin += typei->rrsz) {
1605 randval= nrand48(ads->rand48xsubi);
1606 randval %= (totalweight + 1);
1607 /* makes it into 0..totalweight inclusive; with 2^10 RRs,
1608 * totalweight must be <= 2^26 so probability nonuniformity is
1609 * no worse than 1 in 2^(31-26) ie 1 in 2^5, ie
1610 * abs(log(P_intended(RR_i) / P_actual(RR_i)) <= log(2^-5).
1613 for (search=workbegin, runtotal=0;
1614 (runtotal += (rr=(void*)search)->weight) < randval;
1615 search += typei->rrsz);
1616 assert(search < arrayend);
1617 totalweight -= rr->weight;
1618 if (search != workbegin) {
1619 memcpy(&rrtmp, workbegin, typei->rrsz);
1620 memcpy(workbegin, search, typei->rrsz);
1621 memcpy(search, &rrtmp, typei->rrsz);
1626 * dig -t srv _srv._tcp.test.iwj.relativity.greenend.org.uk.
1627 * ./adnshost_s -t srv- _sip._udp.voip.net.cam.ac.uk.
1628 * ./adnshost_s -t srv- _jabber._tcp.jabber.org
1636 static void mf_byteblock(adns_query qu, void *datap) {
1637 adns_rr_byteblock *rrp= datap;
1638 void *bytes= rrp->data;
1639 adns__makefinal_block(qu,&bytes,rrp->len);
1647 static adns_status pa_opaque(const parseinfo *pai, int cbyte,
1648 int max, void *datap) {
1649 adns_rr_byteblock *rrp= datap;
1651 rrp->len= max - cbyte;
1652 rrp->data= adns__alloc_interim(pai->qu, rrp->len);
1653 if (!rrp->data) R_NOMEM;
1654 memcpy(rrp->data, pai->dgram + cbyte, rrp->len);
1658 static adns_status cs_opaque(vbuf *vb, const void *datap) {
1659 const adns_rr_byteblock *rrp= datap;
1664 sprintf(buf,"\\# %d",rrp->len);
1667 for (l= rrp->len, p= rrp->data;
1670 sprintf(buf," %02x%02x%02x%02x",p[0],p[1],p[2],p[3]);
1676 sprintf(buf," %02x",*p);
1686 static void mf_flat(adns_query qu, void *data) { }
1692 #define TYPESZ_M(member) (sizeof(*((adns_answer*)0)->rrs.member))
1694 #define DEEP_MEMB(memb) TYPESZ_M(memb), mf_##memb, cs_##memb
1695 #define FLAT_MEMB(memb) TYPESZ_M(memb), mf_flat, cs_##memb
1697 #define DEEP_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \
1698 { adns_r_##code & adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), \
1699 mf_##memb, printer,parser,comparer, adns__qdpl_normal,0,0,0 }
1700 #define FLAT_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \
1701 { adns_r_##code & adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), \
1702 mf_flat, printer,parser,comparer, adns__qdpl_normal,0,0,0 }
1703 #define XTRA_TYPE(code,rrt,fmt,memb,parser,comparer,printer, \
1704 makefinal,qdpl,postsort,getrrsz,sender) \
1705 { adns_r_##code & adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), makefinal, \
1706 printer,parser,comparer,qdpl,postsort,getrrsz,sender }
1708 static const typeinfo typeinfos[] = {
1709 /* Must be in ascending order of rrtype ! */
1710 /* mem-mgmt code rrt fmt member parser comparer printer */
1712 FLAT_TYPE(a, "A", 0, inaddr, pa_inaddr, di_inaddr,cs_inaddr ),
1713 DEEP_TYPE(ns_raw, "NS", "raw",str, pa_host_raw,0, cs_domain ),
1714 DEEP_TYPE(cname, "CNAME", 0, str, pa_dom_raw, 0, cs_domain ),
1715 DEEP_TYPE(soa_raw,"SOA", "raw",soa, pa_soa, 0, cs_soa ),
1716 DEEP_TYPE(ptr_raw,"PTR", "raw",str, pa_host_raw,0, cs_domain ),
1717 DEEP_TYPE(hinfo, "HINFO", 0, intstrpair,pa_hinfo, 0, cs_hinfo ),
1718 DEEP_TYPE(mx_raw, "MX", "raw",intstr, pa_mx_raw, di_mx_raw,cs_inthost ),
1719 DEEP_TYPE(txt, "TXT", 0, manyistr,pa_txt, 0, cs_txt ),
1720 DEEP_TYPE(rp_raw, "RP", "raw",strpair, pa_rp, 0, cs_rp ),
1721 FLAT_TYPE(aaaa, "AAAA", 0, in6addr, pa_in6addr, di_in6addr,cs_in6addr ),
1722 XTRA_TYPE(srv_raw,"SRV", "raw",srvraw , pa_srvraw, di_srv, cs_srvraw,
1723 mf_srvraw, qdpl_srv, postsort_srv, 0, 0),
1725 XTRA_TYPE(addr, "A", "addr", addr, pa_addr, di_addr, cs_addr,
1726 mf_flat, adns__qdpl_normal, 0, gsz_addr, qs_addr),
1727 DEEP_TYPE(ns, "NS", "+addr",hostaddr,pa_hostaddr,di_hostaddr,cs_hostaddr ),
1728 DEEP_TYPE(ptr, "PTR","checked",str, pa_ptr, 0, cs_domain ),
1729 DEEP_TYPE(mx, "MX", "+addr",inthostaddr,pa_mx, di_mx, cs_inthostaddr),
1730 XTRA_TYPE(srv, "SRV","+addr",srvha, pa_srvha, di_srv, cs_srvha,
1731 mf_srvha, qdpl_srv, postsort_srv, 0, 0),
1733 DEEP_TYPE(soa, "SOA","822", soa, pa_soa, 0, cs_soa ),
1734 DEEP_TYPE(rp, "RP", "822", strpair, pa_rp, 0, cs_rp ),
1737 static const typeinfo tinfo_addrsub =
1738 XTRA_TYPE(none, "<addr>","sub",addr, pa_addr, 0, cs_addr,
1739 mf_flat, adns__qdpl_normal, 0, gsz_addr, 0);
1741 static const typeinfo typeinfo_unknown=
1742 DEEP_TYPE(unknown,0, "unknown",byteblock,pa_opaque, 0, cs_opaque );
1744 const typeinfo *adns__findtype(adns_rrtype type) {
1745 const typeinfo *begin, *end, *mid;
1747 if (type & adns_r_unknown) return &typeinfo_unknown;
1748 type &= adns_rrt_reprmask;
1750 begin= typeinfos; end= typeinfos+(sizeof(typeinfos)/sizeof(typeinfo));
1752 while (begin < end) {
1753 mid= begin + ((end-begin)>>1);
1754 if (mid->typekey == type) return mid;
1755 if (type > mid->typekey) begin= mid+1;