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,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,qs, +search_sortlist_sa, dip_sockaddr,
339 * addr_rrtypes, addr_rrsz)
342 static adns_status
pap_addr(const parseinfo
*pai
, int rrty
, size_t rrsz
,
343 int *cbyte_io
, int max
, adns_rr_addr
*storeto
)
345 const byte
*dgram
= pai
->dgram
;
346 int af
, addrlen
, salen
;
347 struct in6_addr v6map
;
348 const void *oaddr
= dgram
+ *cbyte_io
;
349 int avail
= max
- *cbyte_io
;
355 if (pai
->qu
->flags
& adns_qf_ipv6_mapv4
) {
356 if (avail
< 4) return adns_s_invaliddata
;
357 memset(v6map
.s6_addr
+ 0, 0x00, 10);
358 memset(v6map
.s6_addr
+ 10, 0xff, 2);
359 memcpy(v6map
.s6_addr
+ 12, oaddr
, 4);
360 oaddr
= v6map
.s6_addr
; avail
= sizeof(v6map
.s6_addr
);
361 if (step
< 0) step
= 4;
364 af
= AF_INET
; addrlen
= 4;
365 addrp
= &storeto
->addr
.inet
.sin_addr
;
366 salen
= sizeof(storeto
->addr
.inet
);
370 af
= AF_INET6
; addrlen
= 16;
371 addrp
= storeto
->addr
.inet6
.sin6_addr
.s6_addr
;
372 salen
= sizeof(storeto
->addr
.inet6
);
377 assert(offsetof(adns_rr_addr
, addr
) + salen
<= rrsz
);
378 if (addrlen
< avail
) return adns_s_invaliddata
;
379 if (step
< 0) step
= addrlen
;
381 memset(&storeto
->addr
, 0, salen
);
382 storeto
->len
= salen
;
383 storeto
->addr
.sa
.sa_family
= af
;
384 memcpy(addrp
, oaddr
, addrlen
);
389 static adns_status
pa_addr(const parseinfo
*pai
, int cbyte
,
390 int max
, void *datap
) {
391 int err
= pap_addr(pai
, pai
->qu
->answer
->type
& adns_rrt_typemask
,
392 pai
->qu
->answer
->rrsz
, &cbyte
, max
, datap
);
394 if (cbyte
!= max
) return adns_s_invaliddata
;
398 static int search_sortlist_sa(adns_state ads
, const struct sockaddr
*sa
)
400 const afinfo
*ai
= 0;
402 switch (sa
->sa_family
) {
403 case AF_INET
: ai
= &adns__inet_afinfo
; break;
404 case AF_INET6
: ai
= &adns__inet6_afinfo
; break;
408 return search_sortlist(ads
, sa
->sa_family
, ai
->sockaddr_to_inaddr(sa
));
411 static int dip_sockaddr(adns_state ads
,
412 const struct sockaddr
*sa
,
413 const struct sockaddr
*sb
)
415 if (!ads
->sortlist
) return 0;
416 return search_sortlist_sa(ads
, sa
) > search_sortlist_sa(ads
, sb
);
419 static int di_addr(adns_state ads
, const void *datap_a
, const void *datap_b
) {
420 const adns_rr_addr
*ap
= datap_a
, *bp
= datap_b
;
422 return dip_sockaddr(ads
, &ap
->addr
.sa
, &bp
->addr
.sa
);
425 static int div_addr(void *context
, const void *datap_a
, const void *datap_b
) {
426 const adns_state ads
= context
;
428 return di_addr(ads
, datap_a
, datap_b
);
431 static adns_status
csp_addr(vbuf
*vb
, const adns_rr_addr
*rrp
) {
435 switch (rrp
->addr
.inet
.sin_family
) {
440 CSP_ADDSTR("INET6 ");
443 err
= getnameinfo(&rrp
->addr
.sa
, rrp
->len
, buf
, sizeof(buf
), 0, 0,
444 NI_NUMERICHOST
); assert(!err
);
448 sprintf(buf
,"AF=%u",rrp
->addr
.sa
.sa_family
);
455 static adns_status
cs_addr(vbuf
*vb
, const void *datap
) {
456 const adns_rr_addr
*rrp
= datap
;
458 return csp_addr(vb
,rrp
);
461 #define ADDR_MAXRRTYPES 2
463 static void addr_rrtypes(adns_state ads
, adns_rrtype type
,
465 adns_rrtype
*rrty
, size_t *nrrty
)
468 adns_rrtype qtf
= type
& adns__qtf_deref
;
470 if ((qf
& adns__qf_afmask
) != adns_qf_ipv6_only
)
471 rrty
[n
++] = adns_r_a
| qtf
;
472 if ((qf
& adns__qf_afmask
) != adns_qf_ipv4_only
)
473 rrty
[n
++] = adns_r_aaaa
| qtf
;
478 static size_t addr_rrsz(adns_query qu
)
480 return qu
->answer
->type
& adns__qtf_bigaddr ?
481 sizeof(adns_rr_addr
) : sizeof(adns_rr_addr_v4only
);
484 static void icb_addr(adns_query parent
, adns_query child
)
486 adns_state ads
= parent
->ads
;
487 adns_answer
*pans
= parent
->answer
, *cans
= child
->answer
;
488 struct timeval tvbuf
;
489 const struct timeval
*now
= 0;
493 /* Must handle CNAMEs correctly. This gets very hairy if the answers we
494 * get are inconsistent.
497 if ((parent
->flags
& adns_qf_search
) &&
498 cans
->status
== adns_s_nxdomain
) {
499 if (parent
->expires
> child
->expires
) parent
->expires
= child
->expires
;
500 adns__cancel_children(parent
);
501 adns__free_interim(parent
, pans
->rrs
.bytes
);
502 pans
->rrs
.bytes
= 0; pans
->nrrs
= 0;
503 adns__must_gettimeofday(ads
, &now
, &tvbuf
);
504 if (now
) adns__search_next(ads
, parent
, *now
);
509 adns__query_fail(parent
, cans
->status
);
513 assert(pans
->rrsz
== cans
->rrsz
);
514 prrsz
= pans
->rrsz
*pans
->nrrs
;
515 crrsz
= cans
->rrsz
*cans
->nrrs
;
516 rrs
= adns__alloc_interim(parent
, prrsz
+ crrsz
);
518 adns__query_fail(parent
, adns_s_nomemory
);
522 memcpy(rrs
, pans
->rrs
.bytes
, prrsz
);
523 adns__free_interim(parent
, pans
->rrs
.bytes
);
525 memcpy(rrs
+ prrsz
, cans
->rrs
.bytes
, crrsz
);
527 if (parent
->expires
> child
->expires
) parent
->expires
= child
->expires
;
528 pans
->rrs
.bytes
= rrs
;
529 pans
->nrrs
+= cans
->nrrs
;
531 if (parent
->children
.head
) LIST_LINK_TAIL(ads
->childw
, parent
);
532 else adns__query_done(parent
);
535 static void qs_addr(adns_query qu
, struct timeval now
)
537 adns_rrtype rrty
[ADDR_MAXRRTYPES
];
538 int i
, nrrty
, err
, id
;
541 (qu
->flags
| adns__qf_senddirect
) &
545 addr_rrtypes(qu
->ads
, qu
->answer
->type
, qu
->flags
, rrty
, &nrrty
);
547 if (!(qu
->answer
->type
& adns__qtf_bigaddr
))
548 qu
->answer
->rrsz
= sizeof(adns_rr_addr_v4only
);
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 for (i
= 0; i
< nrrty
; i
++) {
557 err
= adns__mkquery_frdgram(qu
->ads
, &qu
->vb
, &id
, qu
->query_dgram
,
558 qu
->query_dglen
, DNS_HDRSIZE
, rrty
[i
], qf
);
559 if (err
) goto x_error
;
560 err
= adns__internal_submit(qu
->ads
, &cqu
, qu
->typei
, rrty
[i
],
561 &qu
->vb
, id
, qf
, now
, &ctx
);
562 if (err
) goto x_error
;
563 cqu
->answer
->rrsz
= qu
->answer
->rrsz
;
565 LIST_LINK_TAIL_PART(qu
->children
, cqu
,siblings
.);
570 adns__query_fail(qu
, err
);
574 * _domain (pap,csp,cs)
578 static adns_status
pap_domain(const parseinfo
*pai
, int *cbyte_io
, int max
,
579 char **domain_r
, parsedomain_flags flags
) {
583 st
= adns__parse_domain(pai
->qu
->ads
, pai
->serv
, pai
->qu
, &pai
->qu
->vb
, flags
,
584 pai
->dgram
,pai
->dglen
, cbyte_io
, max
);
586 if (!pai
->qu
->vb
.used
) return adns_s_invaliddata
;
588 dm
= adns__alloc_interim(pai
->qu
, pai
->qu
->vb
.used
+1);
591 dm
[pai
->qu
->vb
.used
]= 0;
592 memcpy(dm
,pai
->qu
->vb
.buf
,pai
->qu
->vb
.used
);
598 static adns_status
csp_domain(vbuf
*vb
, const char *domain
) {
600 if (!*domain
) CSP_ADDSTR(".");
604 static adns_status
cs_domain(vbuf
*vb
, const void *datap
) {
605 const char *const *domainp
= datap
;
606 return csp_domain(vb
,*domainp
);
609 static adns_status
pa_dom_raw(const parseinfo
*pai
, int cbyte
,
610 int max
, void *datap
) {
614 st
= pap_domain(pai
, &cbyte
, max
, rrp
, pdf_quoteok
);
617 if (cbyte
!= max
) return adns_s_invaliddata
;
625 static adns_status
pa_host_raw(const parseinfo
*pai
, int cbyte
,
626 int max
, void *datap
) {
630 st
= pap_domain(pai
, &cbyte
, max
, rrp
,
631 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
634 if (cbyte
!= max
) return adns_s_invaliddata
;
639 * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +icb_hostaddr, pap_findaddrs)
642 static adns_status
pap_findaddrs(const parseinfo
*pai
, adns_rr_hostaddr
*ha
,
643 int *cbyte_io
, int count
, int dmstart
) {
645 int type
, class, rdlen
, rdend
, rdstart
, ownermatched
;
646 adns_rrtype rrty
[ADDR_MAXRRTYPES
];
647 size_t nrrty
, addrsz
;
651 addr_rrtypes(pai
->qu
->ads
, pai
->qu
->answer
->type
,
652 pai
->qu
->flags
, rrty
, &nrrty
);
654 addrsz
= addr_rrsz(pai
->qu
);
656 for (rri
=0, naddrs
=-1; rri
<count
; rri
++) {
657 st
= adns__findrr_anychk(pai
->qu
, pai
->serv
, pai
->dgram
,
658 pai
->dglen
, cbyte_io
,
659 &type
, &class, &ttl
, &rdlen
, &rdstart
,
660 pai
->dgram
, pai
->dglen
, dmstart
, &ownermatched
);
662 if (!ownermatched
|| class != DNS_CLASS_IN
) {
663 if (naddrs
>0) break; else continue;
668 for (j
= 0; j
< nrrty
&& type
!= (rrty
[j
] & adns_rrt_typemask
); j
++);
669 if (j
>= nrrty
) continue;
670 if (!adns__vbuf_ensure(&pai
->qu
->vb
, (naddrs
+1)*addrsz
))
672 adns__update_expires(pai
->qu
,ttl
,pai
->now
);
673 rdend
= rdstart
+ rdlen
;
674 st
= pap_addr(pai
, type
, addrsz
, &rdstart
, rdend
,
675 (adns_rr_addr
*)(pai
->qu
->vb
.buf
+ naddrs
*addrsz
));
677 if (rdstart
!= rdend
) return adns_s_invaliddata
;
681 ha
->addrs
= adns__alloc_interim(pai
->qu
, naddrs
*addrsz
);
682 if (!ha
->addrs
) R_NOMEM
;
683 memcpy(ha
->addrs
, pai
->qu
->vb
.buf
, naddrs
*addrsz
);
685 ha
->astatus
= adns_s_ok
;
687 adns__isort(ha
->addrs
, naddrs
, addrsz
, pai
->qu
->vb
.buf
,
693 static void icb_hostaddr(adns_query parent
, adns_query child
) {
694 adns_answer
*cans
= child
->answer
;
695 adns_rr_hostaddr
*rrp
= child
->ctx
.info
.hostaddr
;
696 adns_state ads
= parent
->ads
;
701 rrp
->naddrs
= (st
>0 && st
<=adns_s_max_tempfail
) ?
-1 : cans
->nrrs
;
702 rrp
->addrs
= cans
->rrs
.addr
;
703 adns__transfer_interim(child
, parent
, rrp
->addrs
, rrp
->naddrs
*cans
->rrsz
);
705 if (parent
->children
.head
) {
706 LIST_LINK_TAIL(ads
->childw
,parent
);
708 adns__query_done(parent
);
712 static adns_status
pap_hostaddr(const parseinfo
*pai
, int *cbyte_io
,
713 int max
, adns_rr_hostaddr
*rrp
) {
719 adns_queryflags nflags
;
721 dmstart
= cbyte
= *cbyte_io
;
722 st
= pap_domain(pai
, &cbyte
, max
, &rrp
->host
,
723 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
727 rrp
->astatus
= adns_s_ok
;
733 st
= pap_findaddrs(pai
, rrp
, &cbyte
, pai
->nscount
, dmstart
);
735 if (rrp
->naddrs
!= -1) return adns_s_ok
;
737 st
= pap_findaddrs(pai
, rrp
, &cbyte
, pai
->arcount
, dmstart
);
739 if (rrp
->naddrs
!= -1) return adns_s_ok
;
741 st
= adns__mkquery_frdgram(pai
->ads
, &pai
->qu
->vb
, &id
,
742 pai
->dgram
, pai
->dglen
, dmstart
,
743 adns_r_addr
, adns_qf_quoteok_query
);
747 ctx
.callback
= icb_hostaddr
;
748 ctx
.info
.hostaddr
= rrp
;
750 nflags
= adns_qf_quoteok_query
;
751 if (!(pai
->qu
->flags
& adns_qf_cname_loose
)) nflags
|= adns_qf_cname_forbid
;
753 st
= adns__internal_submit(pai
->ads
, &nqu
, adns__findtype(adns_r_addr
),
754 (adns_r_addr
& adns_rrt_reprmask
) |
755 (pai
->qu
->answer
->type
& ~adns_rrt_reprmask
),
756 &pai
->qu
->vb
, id
, nflags
, pai
->now
, &ctx
);
759 nqu
->parent
= pai
->qu
;
760 LIST_LINK_TAIL_PART(pai
->qu
->children
,nqu
,siblings
.);
765 static adns_status
pa_hostaddr(const parseinfo
*pai
, int cbyte
,
766 int max
, void *datap
) {
767 adns_rr_hostaddr
*rrp
= datap
;
770 st
= pap_hostaddr(pai
, &cbyte
, max
, rrp
);
772 if (cbyte
!= max
) return adns_s_invaliddata
;
777 static int dip_hostaddr(adns_state ads
,
778 const adns_rr_hostaddr
*ap
, const adns_rr_hostaddr
*bp
) {
779 if (ap
->astatus
!= bp
->astatus
) return ap
->astatus
;
780 if (ap
->astatus
) return 0;
782 return dip_sockaddr(ads
, &ap
->addrs
[0].addr
.sa
, &bp
->addrs
[0].addr
.sa
);
785 static int di_hostaddr(adns_state ads
,
786 const void *datap_a
, const void *datap_b
) {
787 const adns_rr_hostaddr
*ap
= datap_a
, *bp
= datap_b
;
789 return dip_hostaddr(ads
, ap
,bp
);
792 static void mfp_hostaddr(adns_query qu
, adns_rr_hostaddr
*rrp
) {
794 size_t sz
= qu
->answer
->type
& adns__qtf_bigaddr ?
795 sizeof(adns_rr_addr
) : sizeof(adns_rr_addr_v4only
);
796 adns__makefinal_str(qu
,&rrp
->host
);
798 adns__makefinal_block(qu
, &tablev
, rrp
->naddrs
*sz
);
802 static void mf_hostaddr(adns_query qu
, void *datap
) {
803 adns_rr_hostaddr
*rrp
= datap
;
805 mfp_hostaddr(qu
,rrp
);
808 static adns_status
csp_hostaddr(vbuf
*vb
, const adns_rr_hostaddr
*rrp
) {
814 st
= csp_domain(vb
,rrp
->host
); if (st
) return st
;
817 CSP_ADDSTR(adns_errtypeabbrev(rrp
->astatus
));
819 sprintf(buf
," %d ",rrp
->astatus
);
822 CSP_ADDSTR(adns_errabbrev(rrp
->astatus
));
825 errstr
= adns_strerror(rrp
->astatus
);
826 st
= csp_qstring(vb
,errstr
,strlen(errstr
)); if (st
) return st
;
828 if (rrp
->naddrs
>= 0) {
830 for (i
=0; i
<rrp
->naddrs
; i
++) {
832 st
= csp_addr(vb
,&rrp
->addrs
[i
]);
841 static adns_status
cs_hostaddr(vbuf
*vb
, const void *datap
) {
842 const adns_rr_hostaddr
*rrp
= datap
;
844 return csp_hostaddr(vb
,rrp
);
851 static adns_status
pa_mx_raw(const parseinfo
*pai
, int cbyte
,
852 int max
, void *datap
) {
853 const byte
*dgram
= pai
->dgram
;
854 adns_rr_intstr
*rrp
= datap
;
858 if (cbyte
+2 > max
) return adns_s_invaliddata
;
861 st
= pap_domain(pai
, &cbyte
, max
, &rrp
->str
,
862 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
865 if (cbyte
!= max
) return adns_s_invaliddata
;
869 static int di_mx_raw(adns_state ads
, const void *datap_a
, const void *datap_b
) {
870 const adns_rr_intstr
*ap
= datap_a
, *bp
= datap_b
;
872 if (ap
->i
< bp
->i
) return 0;
873 if (ap
->i
> bp
->i
) return 1;
881 static adns_status
pa_mx(const parseinfo
*pai
, int cbyte
,
882 int max
, void *datap
) {
883 const byte
*dgram
= pai
->dgram
;
884 adns_rr_inthostaddr
*rrp
= datap
;
888 if (cbyte
+2 > max
) return adns_s_invaliddata
;
891 st
= pap_hostaddr(pai
, &cbyte
, max
, &rrp
->ha
);
894 if (cbyte
!= max
) return adns_s_invaliddata
;
898 static int di_mx(adns_state ads
, const void *datap_a
, const void *datap_b
) {
899 const adns_rr_inthostaddr
*ap
= datap_a
, *bp
= datap_b
;
901 if (ap
->i
< bp
->i
) return 0;
902 if (ap
->i
> bp
->i
) return 1;
903 return dip_hostaddr(ads
, &ap
->ha
, &bp
->ha
);
907 * _inthostaddr (mf,cs)
910 static void mf_inthostaddr(adns_query qu
, void *datap
) {
911 adns_rr_inthostaddr
*rrp
= datap
;
913 mfp_hostaddr(qu
,&rrp
->ha
);
916 static adns_status
cs_inthostaddr(vbuf
*vb
, const void *datap
) {
917 const adns_rr_inthostaddr
*rrp
= datap
;
920 sprintf(buf
,"%u ",rrp
->i
);
923 return csp_hostaddr(vb
,&rrp
->ha
);
930 static adns_status
cs_inthost(vbuf
*vb
, const void *datap
) {
931 const adns_rr_intstr
*rrp
= datap
;
934 sprintf(buf
,"%u ",rrp
->i
);
936 return csp_domain(vb
,rrp
->str
);
940 * _ptr (pa, +icb_ptr)
943 static void icb_ptr(adns_query parent
, adns_query child
) {
944 adns_answer
*cans
= child
->answer
;
945 const union gen_addr
*queried
;
946 const unsigned char *found
;
947 adns_state ads
= parent
->ads
;
950 if (cans
->status
== adns_s_nxdomain
|| cans
->status
== adns_s_nodata
) {
951 adns__query_fail(parent
,adns_s_inconsistent
);
953 } else if (cans
->status
) {
954 adns__query_fail(parent
,cans
->status
);
958 queried
= &parent
->ctx
.info
.ptr_parent_addr
.addr
;
959 for (i
=0, found
=cans
->rrs
.bytes
; i
<cans
->nrrs
; i
++, found
+= cans
->rrsz
) {
960 if (!memcmp(queried
,found
,cans
->rrsz
)) {
961 if (!parent
->children
.head
) {
962 adns__query_done(parent
);
965 LIST_LINK_TAIL(ads
->childw
,parent
);
971 adns__query_fail(parent
,adns_s_inconsistent
);
974 static adns_status
pa_ptr(const parseinfo
*pai
, int dmstart
,
975 int max
, void *datap
) {
976 static const struct {
978 const char *const tail
[3];
980 { &adns__inet_afinfo
, { DNS_INADDR_ARPA
, 0 } },
981 { &adns__inet6_afinfo
, { DNS_IP6_ARPA
, 0 } }
983 enum { n_ed
= sizeof(expectdomain
)/sizeof(expectdomain
[0]) };
987 struct afinfo_addr
*ap
;
990 int cbyte
, i
, j
, foundj
= -1, lablen
, labstart
, id
, f
, ac
;
996 st
= pap_domain(pai
, &cbyte
, max
, rrp
,
997 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
999 if (cbyte
!= max
) return adns_s_invaliddata
;
1001 ap
= &pai
->qu
->ctx
.info
.ptr_parent_addr
;
1003 adns__findlabel_start(&fls
, pai
->ads
, -1, pai
->qu
,
1004 pai
->qu
->query_dgram
, pai
->qu
->query_dglen
,
1005 pai
->qu
->query_dglen
, DNS_HDRSIZE
, 0);
1007 f
= (1 << n_ed
) - 1; /* superposition of address types */
1009 st
= adns__findlabel_next(&fls
,&lablen
,&labstart
); assert(!st
);
1010 if (lablen
<= 0) break;
1011 for (j
= 0; j
< n_ed
; j
++) {
1012 if (!(f
& (1 << j
))) continue;
1013 if (i
< expectdomain
[j
].ai
->nrevcomp
) {
1014 ac
= expectdomain
[j
].ai
->rev_parsecomp(
1015 pai
->qu
->query_dgram
+ labstart
, lablen
);
1016 if (ac
< 0) goto mismatch
;
1017 assert(i
< sizeof(ipv
[j
]));
1020 tp
= expectdomain
[j
].tail
[i
- expectdomain
[j
].ai
->nrevcomp
];
1022 strncmp(pai
->qu
->query_dgram
+ labstart
, tp
, lablen
) != 0 ||
1030 if (!f
) return adns_s_querydomainwrong
;
1034 if (lablen
< 0) return adns_s_querydomainwrong
;
1035 for (j
= 0; j
< n_ed
; j
++) {
1036 if (!(f
& (1 << j
))) continue;
1037 if (i
>= expectdomain
[j
].ai
->nrevcomp
&&
1038 !expectdomain
[j
].tail
[i
- expectdomain
[j
].ai
->nrevcomp
])
1039 { foundj
= j
; continue; }
1041 if (!f
) return adns_s_querydomainwrong
;
1043 assert(foundj
>= 0 && f
== (1 << foundj
)); /* collapsed to a single type */
1045 ap
->ai
= expectdomain
[foundj
].ai
;
1046 ap
->ai
->rev_mkaddr(&ap
->addr
, ipv
[foundj
]);
1049 st
= adns__mkquery_frdgram(pai
->ads
, &pai
->qu
->vb
, &id
,
1050 pai
->dgram
, pai
->dglen
, dmstart
,
1051 ap
->ai
->rrtype
, adns_qf_quoteok_query
);
1055 ctx
.callback
= icb_ptr
;
1056 memset(&ctx
.info
,0,sizeof(ctx
.info
));
1057 st
= adns__internal_submit(pai
->ads
, &nqu
, adns__findtype(ap
->ai
->rrtype
),
1058 ap
->ai
->rrtype
, &pai
->qu
->vb
, id
,
1059 adns_qf_quoteok_query
, pai
->now
, &ctx
);
1062 nqu
->parent
= pai
->qu
;
1063 LIST_LINK_TAIL_PART(pai
->qu
->children
,nqu
,siblings
.);
1071 static void mf_strpair(adns_query qu
, void *datap
) {
1072 adns_rr_strpair
*rrp
= datap
;
1074 adns__makefinal_str(qu
,&rrp
->array
[0]);
1075 adns__makefinal_str(qu
,&rrp
->array
[1]);
1082 static void mf_intstrpair(adns_query qu
, void *datap
) {
1083 adns_rr_intstrpair
*rrp
= datap
;
1085 adns__makefinal_str(qu
,&rrp
->array
[0].str
);
1086 adns__makefinal_str(qu
,&rrp
->array
[1].str
);
1093 static adns_status
pa_hinfo(const parseinfo
*pai
, int cbyte
,
1094 int max
, void *datap
) {
1095 adns_rr_intstrpair
*rrp
= datap
;
1099 for (i
=0; i
<2; i
++) {
1100 st
= pap_qstring(pai
, &cbyte
, max
, &rrp
->array
[i
].i
, &rrp
->array
[i
].str
);
1104 if (cbyte
!= max
) return adns_s_invaliddata
;
1113 static adns_status
pap_mailbox822(const parseinfo
*pai
,
1114 int *cbyte_io
, int max
, char **mb_r
) {
1115 int lablen
, labstart
, i
, needquote
, c
, r
, neednorm
;
1116 const unsigned char *p
;
1118 findlabel_state fls
;
1124 adns__findlabel_start(&fls
, pai
->ads
,
1126 pai
->dgram
, pai
->dglen
, max
,
1127 *cbyte_io
, cbyte_io
);
1128 st
= adns__findlabel_next(&fls
,&lablen
,&labstart
);
1130 adns__vbuf_appendstr(vb
,".");
1135 for (i
=0, needquote
=0, p
= pai
->dgram
+labstart
; i
<lablen
; i
++) {
1137 if ((c
&~128) < 32 || (c
&~128) == 127) return adns_s_invaliddata
;
1138 if (c
== '.' && !neednorm
) neednorm
= 1;
1139 else if (c
==' ' || c
>=127 || ctype_822special(c
)) needquote
++;
1143 if (needquote
|| neednorm
) {
1144 r
= adns__vbuf_ensure(vb
, lablen
+needquote
+4); if (!r
) R_NOMEM
;
1145 adns__vbuf_appendq(vb
,"\"",1);
1146 for (i
=0, needquote
=0, p
= pai
->dgram
+labstart
; i
<lablen
; i
++, p
++) {
1148 if (c
== '"' || c
=='\\') adns__vbuf_appendq(vb
,"\\",1);
1149 adns__vbuf_appendq(vb
,p
,1);
1151 adns__vbuf_appendq(vb
,"\"",1);
1153 r
= adns__vbuf_append(vb
, pai
->dgram
+labstart
, lablen
); if (!r
) R_NOMEM
;
1156 r
= adns__vbuf_appendstr(vb
,"@"); if (!r
) R_NOMEM
;
1158 st
= adns__parse_domain_more(&fls
,pai
->ads
, pai
->qu
,vb
,0, pai
->dgram
);
1162 str
= adns__alloc_interim(pai
->qu
, vb
->used
+1); if (!str
) R_NOMEM
;
1163 memcpy(str
,vb
->buf
,vb
->used
);
1169 static adns_status
pap_mailbox(const parseinfo
*pai
, int *cbyte_io
, int max
,
1171 if (pai
->qu
->typei
->typekey
& adns__qtf_mail822
) {
1172 return pap_mailbox822(pai
, cbyte_io
, max
, mb_r
);
1174 return pap_domain(pai
, cbyte_io
, max
, mb_r
, pdf_quoteok
);
1178 static adns_status
csp_mailbox(vbuf
*vb
, const char *mailbox
) {
1179 return csp_domain(vb
,mailbox
);
1186 static adns_status
pa_rp(const parseinfo
*pai
, int cbyte
,
1187 int max
, void *datap
) {
1188 adns_rr_strpair
*rrp
= datap
;
1191 st
= pap_mailbox(pai
, &cbyte
, max
, &rrp
->array
[0]);
1194 st
= pap_domain(pai
, &cbyte
, max
, &rrp
->array
[1], pdf_quoteok
);
1197 if (cbyte
!= max
) return adns_s_invaliddata
;
1201 static adns_status
cs_rp(vbuf
*vb
, const void *datap
) {
1202 const adns_rr_strpair
*rrp
= datap
;
1205 st
= csp_mailbox(vb
,rrp
->array
[0]); if (st
) return st
;
1207 st
= csp_domain(vb
,rrp
->array
[1]); if (st
) return st
;
1216 static adns_status
pa_soa(const parseinfo
*pai
, int cbyte
,
1217 int max
, void *datap
) {
1218 adns_rr_soa
*rrp
= datap
;
1219 const byte
*dgram
= pai
->dgram
;
1223 st
= pap_domain(pai
, &cbyte
, max
, &rrp
->mname
,
1224 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
1227 st
= pap_mailbox(pai
, &cbyte
, max
, &rrp
->rname
);
1230 if (cbyte
+20 != max
) return adns_s_invaliddata
;
1232 for (i
=0; i
<5; i
++) {
1235 (&rrp
->serial
)[i
]= (msw
<<16) | lsw
;
1241 static void mf_soa(adns_query qu
, void *datap
) {
1242 adns_rr_soa
*rrp
= datap
;
1244 adns__makefinal_str(qu
,&rrp
->mname
);
1245 adns__makefinal_str(qu
,&rrp
->rname
);
1248 static adns_status
cs_soa(vbuf
*vb
, const void *datap
) {
1249 const adns_rr_soa
*rrp
= datap
;
1254 st
= csp_domain(vb
,rrp
->mname
); if (st
) return st
;
1256 st
= csp_mailbox(vb
,rrp
->rname
); if (st
) return st
;
1258 for (i
=0; i
<5; i
++) {
1259 sprintf(buf
," %lu",(&rrp
->serial
)[i
]);
1267 * _srv* (pa*2,di,cs*2,qdpl,postsort)
1270 static adns_status
qdpl_srv(adns_state ads
,
1271 const char **p_io
, const char *pe
, int labelnum
,
1272 char label_r
[DNS_MAXDOMAIN
], int *ll_io
,
1273 adns_queryflags flags
,
1274 const typeinfo
*typei
) {
1279 if (labelnum
< 2 && !(flags
& adns_qf_quoteok_query
)) {
1280 useflags
= adns_qf_quoteok_query
;
1286 st
= adns__qdpl_normal(ads
, p_io
,pe
, labelnum
,label_r
, ll_io
, useflags
,typei
);
1291 if (!ll
|| label_r
[0]!='_')
1292 return adns_s_querydomaininvalid
;
1293 if (memchr(p_orig
+1, '\\', pe
- (p_orig
+1)))
1294 return adns_s_querydomaininvalid
;
1299 static adns_status
pap_srv_begin(const parseinfo
*pai
, int *cbyte_io
, int max
,
1301 /* might be adns_rr_srvraw* */) {
1302 const byte
*dgram
= pai
->dgram
;
1306 if ((*cbyte_io
+= 6) > max
) return adns_s_invaliddata
;
1308 rrp
->priority
= GET_W(cbyte
, ti
);
1309 rrp
->weight
= GET_W(cbyte
, ti
);
1310 rrp
->port
= GET_W(cbyte
, ti
);
1314 static adns_status
pa_srvraw(const parseinfo
*pai
, int cbyte
,
1315 int max
, void *datap
) {
1316 adns_rr_srvraw
*rrp
= datap
;
1319 st
= pap_srv_begin(pai
,&cbyte
,max
,datap
);
1322 st
= pap_domain(pai
, &cbyte
, max
, &rrp
->host
,
1323 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
1326 if (cbyte
!= max
) return adns_s_invaliddata
;
1330 static adns_status
pa_srvha(const parseinfo
*pai
, int cbyte
,
1331 int max
, void *datap
) {
1332 adns_rr_srvha
*rrp
= datap
;
1335 st
= pap_srv_begin(pai
,&cbyte
,max
,datap
); if (st
) return st
;
1336 st
= pap_hostaddr(pai
, &cbyte
, max
, &rrp
->ha
); if (st
) return st
;
1337 if (cbyte
!= max
) return adns_s_invaliddata
;
1341 static void mf_srvraw(adns_query qu
, void *datap
) {
1342 adns_rr_srvraw
*rrp
= datap
;
1343 adns__makefinal_str(qu
, &rrp
->host
);
1346 static void mf_srvha(adns_query qu
, void *datap
) {
1347 adns_rr_srvha
*rrp
= datap
;
1348 mfp_hostaddr(qu
,&rrp
->ha
);
1351 static int di_srv(adns_state ads
, const void *datap_a
, const void *datap_b
) {
1352 const adns_rr_srvraw
*ap
= datap_a
, *bp
= datap_b
;
1353 /* might be const adns_rr_svhostaddr* */
1355 if (ap
->priority
< bp
->priority
) return 0;
1356 if (ap
->priority
> bp
->priority
) return 1;
1360 static adns_status
csp_srv_begin(vbuf
*vb
, const adns_rr_srvha
*rrp
1361 /* might be adns_rr_srvraw* */) {
1363 sprintf(buf
,"%u %u %u ", rrp
->priority
, rrp
->weight
, rrp
->port
);
1368 static adns_status
cs_srvraw(vbuf
*vb
, const void *datap
) {
1369 const adns_rr_srvraw
*rrp
= datap
;
1372 st
= csp_srv_begin(vb
,(const void*)rrp
); if (st
) return st
;
1373 return csp_domain(vb
,rrp
->host
);
1376 static adns_status
cs_srvha(vbuf
*vb
, const void *datap
) {
1377 const adns_rr_srvha
*rrp
= datap
;
1380 st
= csp_srv_begin(vb
,(const void*)datap
); if (st
) return st
;
1381 return csp_hostaddr(vb
,&rrp
->ha
);
1384 static void postsort_srv(adns_state ads
, void *array
, int nrrs
,
1385 const struct typeinfo
*typei
) {
1386 /* we treat everything in the array as if it were an adns_rr_srvha
1387 * even though the array might be of adns_rr_srvraw. That's OK
1388 * because they have the same prefix, which is all we access.
1389 * We use typei->rrsz, too, rather than naive array indexing, of course.
1391 char *workbegin
, *workend
, *search
, *arrayend
;
1392 const adns_rr_srvha
*rr
;
1393 union { adns_rr_srvha ha
; adns_rr_srvraw raw
; } rrtmp
;
1394 int cpriority
, totalweight
, runtotal
;
1397 for (workbegin
= array
, arrayend
= workbegin
+ typei
->rrsz
* nrrs
;
1398 workbegin
< arrayend
;
1399 workbegin
= workend
) {
1400 cpriority
= (rr
=(void*)workbegin
)->priority
;
1402 for (workend
= workbegin
, totalweight
= 0;
1403 workend
< arrayend
&& (rr
=(void*)workend
)->priority
== cpriority
;
1404 workend
+= typei
->rrsz
) {
1405 totalweight
+= rr
->weight
;
1408 /* Now workbegin..(workend-1) incl. are exactly all of the RRs of
1409 * cpriority. From now on, workbegin points to the `remaining'
1410 * records: we select one record at a time (RFC2782 `Usage rules'
1411 * and `Format of the SRV RR' subsection `Weight') to place at
1412 * workbegin (swapping with the one that was there, and then
1413 * advance workbegin. */
1415 workbegin
+ typei
->rrsz
< workend
; /* don't bother if just one */
1416 workbegin
+= typei
->rrsz
) {
1418 randval
= nrand48(ads
->rand48xsubi
);
1419 randval
%= (totalweight
+ 1);
1420 /* makes it into 0..totalweight inclusive; with 2^10 RRs,
1421 * totalweight must be <= 2^26 so probability nonuniformity is
1422 * no worse than 1 in 2^(31-26) ie 1 in 2^5, ie
1423 * abs(log(P_intended(RR_i) / P_actual(RR_i)) <= log(2^-5).
1426 for (search
=workbegin
, runtotal
=0;
1427 (runtotal
+= (rr
=(void*)search
)->weight
) < randval
;
1428 search
+= typei
->rrsz
);
1429 assert(search
< arrayend
);
1430 totalweight
-= rr
->weight
;
1431 if (search
!= workbegin
) {
1432 memcpy(&rrtmp
, workbegin
, typei
->rrsz
);
1433 memcpy(workbegin
, search
, typei
->rrsz
);
1434 memcpy(search
, &rrtmp
, typei
->rrsz
);
1439 * dig -t srv _srv._tcp.test.iwj.relativity.greenend.org.uk.
1440 * ./adnshost_s -t srv- _sip._udp.voip.net.cam.ac.uk.
1441 * ./adnshost_s -t srv- _jabber._tcp.jabber.org
1449 static void mf_byteblock(adns_query qu
, void *datap
) {
1450 adns_rr_byteblock
*rrp
= datap
;
1451 void *bytes
= rrp
->data
;
1452 adns__makefinal_block(qu
,&bytes
,rrp
->len
);
1460 static adns_status
pa_opaque(const parseinfo
*pai
, int cbyte
,
1461 int max
, void *datap
) {
1462 adns_rr_byteblock
*rrp
= datap
;
1464 rrp
->len
= max
- cbyte
;
1465 rrp
->data
= adns__alloc_interim(pai
->qu
, rrp
->len
);
1466 if (!rrp
->data
) R_NOMEM
;
1467 memcpy(rrp
->data
, pai
->dgram
+ cbyte
, rrp
->len
);
1471 static adns_status
cs_opaque(vbuf
*vb
, const void *datap
) {
1472 const adns_rr_byteblock
*rrp
= datap
;
1477 sprintf(buf
,"\\# %d",rrp
->len
);
1480 for (l
= rrp
->len
, p
= rrp
->data
;
1483 sprintf(buf
," %02x%02x%02x%02x",p
[0],p
[1],p
[2],p
[3]);
1489 sprintf(buf
," %02x",*p
);
1499 static void mf_flat(adns_query qu
, void *data
) { }
1505 #define TYPESZ_M(member) (sizeof(*((adns_answer*)0)->rrs.member))
1507 #define DEEP_MEMB(memb) TYPESZ_M(memb), mf_##memb, cs_##memb
1508 #define FLAT_MEMB(memb) TYPESZ_M(memb), mf_flat, cs_##memb
1510 #define DEEP_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \
1511 { adns_r_##code & adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), \
1512 mf_##memb, printer,parser,comparer, adns__qdpl_normal,0,0 }
1513 #define FLAT_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \
1514 { adns_r_##code & adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), \
1515 mf_flat, printer,parser,comparer, adns__qdpl_normal,0,0 }
1516 #define XTRA_TYPE(code,rrt,fmt,memb,parser,comparer,printer, \
1517 makefinal,qdpl,postsort,sender) \
1518 { adns_r_##code & adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), makefinal, \
1519 printer,parser,comparer,qdpl,postsort,sender }
1521 static const typeinfo typeinfos
[] = {
1522 /* Must be in ascending order of rrtype ! */
1523 /* mem-mgmt code rrt fmt member parser comparer printer */
1525 FLAT_TYPE(a
, "A", 0, inaddr
, pa_inaddr
, di_inaddr
,cs_inaddr
),
1526 DEEP_TYPE(ns_raw
, "NS", "raw",str
, pa_host_raw
,0, cs_domain
),
1527 DEEP_TYPE(cname
, "CNAME", 0, str
, pa_dom_raw
, 0, cs_domain
),
1528 DEEP_TYPE(soa_raw
,"SOA", "raw",soa
, pa_soa
, 0, cs_soa
),
1529 DEEP_TYPE(ptr_raw
,"PTR", "raw",str
, pa_host_raw
,0, cs_domain
),
1530 DEEP_TYPE(hinfo
, "HINFO", 0, intstrpair
,pa_hinfo
, 0, cs_hinfo
),
1531 DEEP_TYPE(mx_raw
, "MX", "raw",intstr
, pa_mx_raw
, di_mx_raw
,cs_inthost
),
1532 DEEP_TYPE(txt
, "TXT", 0, manyistr
,pa_txt
, 0, cs_txt
),
1533 DEEP_TYPE(rp_raw
, "RP", "raw",strpair
, pa_rp
, 0, cs_rp
),
1534 FLAT_TYPE(aaaa
, "AAAA", 0, in6addr
, pa_in6addr
, di_in6addr
,cs_in6addr
),
1535 XTRA_TYPE(srv_raw
,"SRV", "raw",srvraw
, pa_srvraw
, di_srv
, cs_srvraw
,
1536 mf_srvraw
, qdpl_srv
, postsort_srv
, 0),
1538 XTRA_TYPE(addr
, "A", "addr", addr
, pa_addr
, di_addr
, cs_addr
,
1539 mf_flat
, adns__qdpl_normal
, 0, qs_addr
),
1540 DEEP_TYPE(ns
, "NS", "+addr",hostaddr
,pa_hostaddr
,di_hostaddr
,cs_hostaddr
),
1541 DEEP_TYPE(ptr
, "PTR","checked",str
, pa_ptr
, 0, cs_domain
),
1542 DEEP_TYPE(mx
, "MX", "+addr",inthostaddr
,pa_mx
, di_mx
, cs_inthostaddr
),
1543 XTRA_TYPE(srv
, "SRV","+addr",srvha
, pa_srvha
, di_srv
, cs_srvha
,
1544 mf_srvha
, qdpl_srv
, postsort_srv
, 0),
1546 DEEP_TYPE(soa
, "SOA","822", soa
, pa_soa
, 0, cs_soa
),
1547 DEEP_TYPE(rp
, "RP", "822", strpair
, pa_rp
, 0, cs_rp
),
1550 static const typeinfo typeinfo_unknown
=
1551 DEEP_TYPE(unknown
,0, "unknown",byteblock
,pa_opaque
, 0, cs_opaque
);
1553 const typeinfo
*adns__findtype(adns_rrtype type
) {
1554 const typeinfo
*begin
, *end
, *mid
;
1556 if (type
& adns_r_unknown
) return &typeinfo_unknown
;
1557 type
&= adns_rrt_reprmask
;
1559 begin
= typeinfos
; end
= typeinfos
+(sizeof(typeinfos
)/sizeof(typeinfo
));
1561 while (begin
< end
) {
1562 mid
= begin
+ ((end
-begin
)>>1);
1563 if (mid
->typekey
== type
) return mid
;
1564 if (type
> mid
->typekey
) begin
= mid
+1;