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_domapv4
) {
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 (!(type
& adns__qtf_bigaddr
) || !(type
& adns__qtf_manyaf
))
471 qf
= (qf
& adns__qf_afmask
) | adns_qf_ipv4_only
;
473 if (qf
& adns_qf_ipv4_only
) rrty
[n
++] = adns_r_a
| qtf
;
474 if (qf
& adns_qf_ipv6_only
) rrty
[n
++] = adns_r_aaaa
| qtf
;
479 static size_t addr_rrsz(adns_query qu
)
481 return qu
->answer
->type
& adns__qtf_bigaddr ?
482 sizeof(adns_rr_addr
) : sizeof(adns_rr_addr_v4only
);
485 static adns_status
append_addrs(adns_query qu
, size_t rrsz
,
486 adns_rr_addr
**dp
, int *dlen
,
487 const adns_rr_addr
*sp
, int slen
)
489 size_t drrsz
= *dlen
*rrsz
, srrsz
= slen
*rrsz
;
490 byte
*p
= adns__alloc_interim(qu
, drrsz
+ srrsz
);
493 memcpy(p
, *dp
, drrsz
);
494 adns__free_interim(qu
, *dp
);
496 memcpy(p
+ drrsz
, sp
, srrsz
);
498 *dp
= (adns_rr_addr
*)p
;
502 static void icb_addr(adns_query parent
, adns_query child
)
504 adns_state ads
= parent
->ads
;
505 adns_answer
*pans
= parent
->answer
, *cans
= child
->answer
;
506 struct timeval tvbuf
;
508 const struct timeval
*now
= 0;
510 /* Must handle CNAMEs correctly. This gets very hairy if the answers we
511 * get are inconsistent.
514 if ((parent
->flags
& adns_qf_search
) &&
515 cans
->status
== adns_s_nxdomain
) {
516 if (parent
->expires
> child
->expires
) parent
->expires
= child
->expires
;
517 adns__cancel_children(parent
);
518 adns__free_interim(parent
, pans
->rrs
.bytes
);
519 pans
->rrs
.bytes
= 0; pans
->nrrs
= 0;
520 adns__must_gettimeofday(ads
, &now
, &tvbuf
);
521 if (now
) adns__search_next(ads
, parent
, *now
);
525 if (cans
->status
&& cans
->status
!= adns_s_nodata
) {
526 adns__query_fail(parent
, cans
->status
);
530 assert(pans
->rrsz
== cans
->rrsz
);
531 err
= append_addrs(parent
, pans
->rrsz
,
532 &pans
->rrs
.addr
, &pans
->nrrs
,
533 cans
->rrs
.addr
, cans
->nrrs
);
534 if (err
) { adns__query_fail(parent
, err
); return; }
536 if (parent
->expires
> child
->expires
) parent
->expires
= child
->expires
;
538 if (parent
->children
.head
) LIST_LINK_TAIL(ads
->childw
, parent
);
539 else if (!pans
->nrrs
) adns__query_fail(parent
, adns_s_nodata
);
540 else adns__query_done(parent
);
543 static void addr_subqueries(adns_query qu
, struct timeval now
,
544 const adns_rrtype
*rrty
, size_t nrrty
)
549 (qu
->flags
| adns__qf_senddirect
) &
553 if (!(qu
->answer
->type
& adns__qtf_bigaddr
))
554 qu
->answer
->rrsz
= sizeof(adns_rr_addr_v4only
);
556 /* This always makes child queries, even if there's only the one. This
557 * seems wasteful, but there's only one case where it'd be safe -- namely
558 * IPv4-only -- and that's not the case I want to optimize.
560 memset(&ctx
, 0, sizeof(ctx
));
561 ctx
.callback
= icb_addr
;
562 for (i
= 0; i
< nrrty
; i
++) {
563 err
= adns__mkquery_frdgram(qu
->ads
, &qu
->vb
, &id
, qu
->query_dgram
,
564 qu
->query_dglen
, DNS_HDRSIZE
, rrty
[i
], qf
);
565 if (err
) goto x_error
;
566 err
= adns__internal_submit(qu
->ads
, &cqu
, qu
->typei
, rrty
[i
],
567 &qu
->vb
, id
, qf
, now
, &ctx
);
568 if (err
) goto x_error
;
569 cqu
->answer
->rrsz
= qu
->answer
->rrsz
;
571 LIST_LINK_TAIL_PART(qu
->children
, cqu
,siblings
.);
573 qu
->state
= query_childw
;
574 LIST_LINK_TAIL(qu
->ads
->childw
, qu
);
578 adns__query_fail(qu
, err
);
581 static adns_status
addr_submit(adns_query parent
, adns_query
*query_r
,
582 vbuf
*qumsg_vb
, int id
,
583 const adns_rrtype
*rrty
, size_t nrrty
,
584 adns_queryflags flags
, struct timeval now
,
587 /* This is effectively a substitute for adns__internal_submit, intended for
588 * the case where the caller (possibly) only wants a subset of the
589 * available record types. The memory management and callback rules are
590 * the same as for adns__internal_submit.
592 * Some differences: the query is linked onto the parent's children list
593 * before exit (though the parent's state is not changed, and it is not
594 * linked into the childw list queue).
597 adns_state ads
= parent
->ads
;
600 (adns_r_addr
& adns_rrt_reprmask
) |
601 (parent
->answer
->type
& ~adns_rrt_reprmask
);
603 err
= adns__internal_submit(ads
, query_r
, adns__findtype(adns_r_addr
),
604 type
, qumsg_vb
, id
, flags
| adns__qf_nosend
,
608 (*query_r
)->parent
= parent
;
609 LIST_LINK_TAIL_PART(parent
->children
, *query_r
, siblings
.);
610 addr_subqueries(*query_r
, now
, rrty
, nrrty
);
614 static void qs_addr(adns_query qu
, struct timeval now
)
616 adns_rrtype rrty
[ADDR_MAXRRTYPES
];
619 addr_rrtypes(qu
->ads
, qu
->answer
->type
, qu
->flags
, rrty
, &nrrty
);
620 addr_subqueries(qu
, now
, rrty
, nrrty
);
624 * _domain (pap,csp,cs)
628 static adns_status
pap_domain(const parseinfo
*pai
, int *cbyte_io
, int max
,
629 char **domain_r
, parsedomain_flags flags
) {
633 st
= adns__parse_domain(pai
->qu
->ads
, pai
->serv
, pai
->qu
, &pai
->qu
->vb
, flags
,
634 pai
->dgram
,pai
->dglen
, cbyte_io
, max
);
636 if (!pai
->qu
->vb
.used
) return adns_s_invaliddata
;
638 dm
= adns__alloc_interim(pai
->qu
, pai
->qu
->vb
.used
+1);
641 dm
[pai
->qu
->vb
.used
]= 0;
642 memcpy(dm
,pai
->qu
->vb
.buf
,pai
->qu
->vb
.used
);
648 static adns_status
csp_domain(vbuf
*vb
, const char *domain
) {
650 if (!*domain
) CSP_ADDSTR(".");
654 static adns_status
cs_domain(vbuf
*vb
, const void *datap
) {
655 const char *const *domainp
= datap
;
656 return csp_domain(vb
,*domainp
);
659 static adns_status
pa_dom_raw(const parseinfo
*pai
, int cbyte
,
660 int max
, void *datap
) {
664 st
= pap_domain(pai
, &cbyte
, max
, rrp
, pdf_quoteok
);
667 if (cbyte
!= max
) return adns_s_invaliddata
;
675 static adns_status
pa_host_raw(const parseinfo
*pai
, int cbyte
,
676 int max
, void *datap
) {
680 st
= pap_domain(pai
, &cbyte
, max
, rrp
,
681 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
684 if (cbyte
!= max
) return adns_s_invaliddata
;
689 * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +icb_hostaddr, pap_findaddrs)
692 static adns_status
pap_findaddrs(const parseinfo
*pai
, adns_rr_hostaddr
*ha
,
693 adns_rrtype
*rrty
, size_t *nrrty_io
,
694 size_t addrsz
, int *cbyte_io
, int count
,
697 int type
, class, rdlen
, rdend
, rdstart
, ownermatched
;
698 size_t nrrty
= *nrrty_io
;
702 for (rri
=0, naddrs
=0; rri
<count
; rri
++) {
703 st
= adns__findrr_anychk(pai
->qu
, pai
->serv
, pai
->dgram
,
704 pai
->dglen
, cbyte_io
,
705 &type
, &class, &ttl
, &rdlen
, &rdstart
,
706 pai
->dgram
, pai
->dglen
, dmstart
, &ownermatched
);
708 if (!ownermatched
|| class != DNS_CLASS_IN
) continue;
709 for (j
= 0; j
< nrrty
&& type
!= (rrty
[j
] & adns_rrt_typemask
); j
++);
710 if (j
>= nrrty
) continue;
713 adns_rrtype t
= rrty
[j
];
714 rrty
[j
] = rrty
[*nrrty_io
];
717 if (!adns__vbuf_ensure(&pai
->qu
->vb
, (naddrs
+1)*addrsz
)) R_NOMEM
;
718 adns__update_expires(pai
->qu
,ttl
,pai
->now
);
719 rdend
= rdstart
+ rdlen
;
720 st
= pap_addr(pai
, type
, addrsz
, &rdstart
, rdend
,
721 (adns_rr_addr
*)(pai
->qu
->vb
.buf
+ naddrs
*addrsz
));
723 if (rdstart
!= rdend
) return adns_s_invaliddata
;
727 st
= append_addrs(pai
->qu
, addrsz
, &ha
->addrs
, &ha
->naddrs
,
728 (const adns_rr_addr
*)pai
->qu
->vb
.buf
, naddrs
);
730 ha
->astatus
= adns_s_ok
;
733 adns__isort(ha
->addrs
, naddrs
, addrsz
, pai
->qu
->vb
.buf
,
740 static void icb_hostaddr(adns_query parent
, adns_query child
) {
741 adns_answer
*cans
= child
->answer
;
742 adns_rr_hostaddr
*rrp
= child
->ctx
.info
.hostaddr
;
743 adns_state ads
= parent
->ads
;
745 size_t addrsz
= addr_rrsz(parent
);
747 st
= cans
->status
== adns_s_nodata ? adns_s_ok
: cans
->status
;
751 assert(addrsz
== cans
->rrsz
);
752 if (parent
->expires
> child
->expires
) parent
->expires
= child
->expires
;
753 st
= append_addrs(parent
, addrsz
,
754 &rrp
->addrs
, &rrp
->naddrs
,
755 cans
->rrs
.addr
, cans
->nrrs
);
757 if (!rrp
->naddrs
) { st
= adns_s_nodata
; goto done
; }
759 if (!adns__vbuf_ensure(&parent
->vb
, addrsz
))
760 { st
= adns_s_nomemory
; goto done
; }
761 adns__isort(rrp
->addrs
, rrp
->naddrs
, addrsz
, parent
->vb
.buf
,
766 adns__free_interim(parent
, rrp
->addrs
);
767 rrp
->naddrs
= (st
>0 && st
<=adns_s_max_tempfail
) ?
-1 : cans
->nrrs
;
770 if (parent
->children
.head
) {
771 LIST_LINK_TAIL(ads
->childw
,parent
);
773 adns__query_done(parent
);
777 static adns_status
pap_hostaddr(const parseinfo
*pai
, int *cbyte_io
,
778 int max
, adns_rr_hostaddr
*rrp
) {
784 adns_queryflags nflags
;
785 adns_rrtype rrty
[ADDR_MAXRRTYPES
];
787 size_t addrsz
= addr_rrsz(pai
->qu
);
789 dmstart
= cbyte
= *cbyte_io
;
790 st
= pap_domain(pai
, &cbyte
, max
, &rrp
->host
,
791 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
795 rrp
->astatus
= adns_s_ok
;
801 addr_rrtypes(pai
->ads
, pai
->qu
->answer
->type
,
802 pai
->qu
->flags
, rrty
, &nrrty
);
804 st
= pap_findaddrs(pai
, rrp
, rrty
, &nrrty
, addrsz
,
805 &cbyte
, pai
->nscount
, dmstart
);
807 if (!nrrty
) return adns_s_ok
;
809 st
= pap_findaddrs(pai
, rrp
, rrty
, &nrrty
, addrsz
,
810 &cbyte
, pai
->arcount
, dmstart
);
812 if (!nrrty
) return adns_s_ok
;
814 st
= adns__mkquery_frdgram(pai
->ads
, &pai
->qu
->vb
, &id
,
815 pai
->dgram
, pai
->dglen
, dmstart
,
816 adns_r_addr
, adns_qf_quoteok_query
);
820 ctx
.callback
= icb_hostaddr
;
821 ctx
.info
.hostaddr
= rrp
;
823 nflags
= adns_qf_quoteok_query
| (pai
->qu
->flags
& adns__qf_afmask
);
824 if (!(pai
->qu
->flags
& adns_qf_cname_loose
)) nflags
|= adns_qf_cname_forbid
;
826 st
= addr_submit(pai
->qu
, &nqu
, &pai
->qu
->vb
, id
, rrty
, nrrty
,
827 nflags
, pai
->now
, &ctx
);
833 static adns_status
pa_hostaddr(const parseinfo
*pai
, int cbyte
,
834 int max
, void *datap
) {
835 adns_rr_hostaddr
*rrp
= datap
;
838 st
= pap_hostaddr(pai
, &cbyte
, max
, rrp
);
840 if (cbyte
!= max
) return adns_s_invaliddata
;
845 static int dip_hostaddr(adns_state ads
,
846 const adns_rr_hostaddr
*ap
, const adns_rr_hostaddr
*bp
) {
847 if (ap
->astatus
!= bp
->astatus
) return ap
->astatus
;
848 if (ap
->astatus
) return 0;
850 return dip_sockaddr(ads
, &ap
->addrs
[0].addr
.sa
, &bp
->addrs
[0].addr
.sa
);
853 static int di_hostaddr(adns_state ads
,
854 const void *datap_a
, const void *datap_b
) {
855 const adns_rr_hostaddr
*ap
= datap_a
, *bp
= datap_b
;
857 return dip_hostaddr(ads
, ap
,bp
);
860 static void mfp_hostaddr(adns_query qu
, adns_rr_hostaddr
*rrp
) {
862 size_t sz
= qu
->answer
->type
& adns__qtf_bigaddr ?
863 sizeof(adns_rr_addr
) : sizeof(adns_rr_addr_v4only
);
864 adns__makefinal_str(qu
,&rrp
->host
);
866 adns__makefinal_block(qu
, &tablev
, rrp
->naddrs
*sz
);
870 static void mf_hostaddr(adns_query qu
, void *datap
) {
871 adns_rr_hostaddr
*rrp
= datap
;
873 mfp_hostaddr(qu
,rrp
);
876 static adns_status
csp_hostaddr(vbuf
*vb
, const adns_rr_hostaddr
*rrp
) {
882 st
= csp_domain(vb
,rrp
->host
); if (st
) return st
;
885 CSP_ADDSTR(adns_errtypeabbrev(rrp
->astatus
));
887 sprintf(buf
," %d ",rrp
->astatus
);
890 CSP_ADDSTR(adns_errabbrev(rrp
->astatus
));
893 errstr
= adns_strerror(rrp
->astatus
);
894 st
= csp_qstring(vb
,errstr
,strlen(errstr
)); if (st
) return st
;
896 if (rrp
->naddrs
>= 0) {
898 for (i
=0; i
<rrp
->naddrs
; i
++) {
900 st
= csp_addr(vb
,&rrp
->addrs
[i
]);
909 static adns_status
cs_hostaddr(vbuf
*vb
, const void *datap
) {
910 const adns_rr_hostaddr
*rrp
= datap
;
912 return csp_hostaddr(vb
,rrp
);
919 static adns_status
pa_mx_raw(const parseinfo
*pai
, int cbyte
,
920 int max
, void *datap
) {
921 const byte
*dgram
= pai
->dgram
;
922 adns_rr_intstr
*rrp
= datap
;
926 if (cbyte
+2 > max
) return adns_s_invaliddata
;
929 st
= pap_domain(pai
, &cbyte
, max
, &rrp
->str
,
930 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
933 if (cbyte
!= max
) return adns_s_invaliddata
;
937 static int di_mx_raw(adns_state ads
, const void *datap_a
, const void *datap_b
) {
938 const adns_rr_intstr
*ap
= datap_a
, *bp
= datap_b
;
940 if (ap
->i
< bp
->i
) return 0;
941 if (ap
->i
> bp
->i
) return 1;
949 static adns_status
pa_mx(const parseinfo
*pai
, int cbyte
,
950 int max
, void *datap
) {
951 const byte
*dgram
= pai
->dgram
;
952 adns_rr_inthostaddr
*rrp
= datap
;
956 if (cbyte
+2 > max
) return adns_s_invaliddata
;
959 st
= pap_hostaddr(pai
, &cbyte
, max
, &rrp
->ha
);
962 if (cbyte
!= max
) return adns_s_invaliddata
;
966 static int di_mx(adns_state ads
, const void *datap_a
, const void *datap_b
) {
967 const adns_rr_inthostaddr
*ap
= datap_a
, *bp
= datap_b
;
969 if (ap
->i
< bp
->i
) return 0;
970 if (ap
->i
> bp
->i
) return 1;
971 return dip_hostaddr(ads
, &ap
->ha
, &bp
->ha
);
975 * _inthostaddr (mf,cs)
978 static void mf_inthostaddr(adns_query qu
, void *datap
) {
979 adns_rr_inthostaddr
*rrp
= datap
;
981 mfp_hostaddr(qu
,&rrp
->ha
);
984 static adns_status
cs_inthostaddr(vbuf
*vb
, const void *datap
) {
985 const adns_rr_inthostaddr
*rrp
= datap
;
988 sprintf(buf
,"%u ",rrp
->i
);
991 return csp_hostaddr(vb
,&rrp
->ha
);
998 static adns_status
cs_inthost(vbuf
*vb
, const void *datap
) {
999 const adns_rr_intstr
*rrp
= datap
;
1002 sprintf(buf
,"%u ",rrp
->i
);
1004 return csp_domain(vb
,rrp
->str
);
1008 * _ptr (pa, +icb_ptr)
1011 static void icb_ptr(adns_query parent
, adns_query child
) {
1012 adns_answer
*cans
= child
->answer
;
1013 const union gen_addr
*queried
;
1014 const unsigned char *found
;
1015 adns_state ads
= parent
->ads
;
1018 if (cans
->status
== adns_s_nxdomain
|| cans
->status
== adns_s_nodata
) {
1019 adns__query_fail(parent
,adns_s_inconsistent
);
1021 } else if (cans
->status
) {
1022 adns__query_fail(parent
,cans
->status
);
1026 queried
= &parent
->ctx
.info
.ptr_parent_addr
.addr
;
1027 for (i
=0, found
=cans
->rrs
.bytes
; i
<cans
->nrrs
; i
++, found
+= cans
->rrsz
) {
1028 if (!memcmp(queried
,found
,cans
->rrsz
)) {
1029 if (!parent
->children
.head
) {
1030 adns__query_done(parent
);
1033 LIST_LINK_TAIL(ads
->childw
,parent
);
1039 adns__query_fail(parent
,adns_s_inconsistent
);
1042 static adns_status
pa_ptr(const parseinfo
*pai
, int dmstart
,
1043 int max
, void *datap
) {
1044 static const struct {
1046 const char *const tail
[3];
1047 } expectdomain
[] = {
1048 { &adns__inet_afinfo
, { DNS_INADDR_ARPA
, 0 } },
1049 { &adns__inet6_afinfo
, { DNS_IP6_ARPA
, 0 } }
1051 enum { n_ed
= sizeof(expectdomain
)/sizeof(expectdomain
[0]) };
1055 struct afinfo_addr
*ap
;
1056 findlabel_state fls
;
1058 int cbyte
, i
, j
, foundj
= -1, lablen
, labstart
, id
, f
, ac
;
1064 st
= pap_domain(pai
, &cbyte
, max
, rrp
,
1065 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
1067 if (cbyte
!= max
) return adns_s_invaliddata
;
1069 ap
= &pai
->qu
->ctx
.info
.ptr_parent_addr
;
1071 adns__findlabel_start(&fls
, pai
->ads
, -1, pai
->qu
,
1072 pai
->qu
->query_dgram
, pai
->qu
->query_dglen
,
1073 pai
->qu
->query_dglen
, DNS_HDRSIZE
, 0);
1075 f
= (1 << n_ed
) - 1; /* superposition of address types */
1077 st
= adns__findlabel_next(&fls
,&lablen
,&labstart
); assert(!st
);
1078 if (lablen
<= 0) break;
1079 for (j
= 0; j
< n_ed
; j
++) {
1080 if (!(f
& (1 << j
))) continue;
1081 if (i
< expectdomain
[j
].ai
->nrevcomp
) {
1082 ac
= expectdomain
[j
].ai
->rev_parsecomp(
1083 pai
->qu
->query_dgram
+ labstart
, lablen
);
1084 if (ac
< 0) goto mismatch
;
1085 assert(i
< sizeof(ipv
[j
]));
1088 tp
= expectdomain
[j
].tail
[i
- expectdomain
[j
].ai
->nrevcomp
];
1090 strncmp(pai
->qu
->query_dgram
+ labstart
, tp
, lablen
) != 0 ||
1098 if (!f
) return adns_s_querydomainwrong
;
1102 if (lablen
< 0) return adns_s_querydomainwrong
;
1103 for (j
= 0; j
< n_ed
; j
++) {
1104 if (!(f
& (1 << j
))) continue;
1105 if (i
>= expectdomain
[j
].ai
->nrevcomp
&&
1106 !expectdomain
[j
].tail
[i
- expectdomain
[j
].ai
->nrevcomp
])
1107 { foundj
= j
; continue; }
1109 if (!f
) return adns_s_querydomainwrong
;
1111 assert(foundj
>= 0 && f
== (1 << foundj
)); /* collapsed to a single type */
1113 ap
->ai
= expectdomain
[foundj
].ai
;
1114 ap
->ai
->rev_mkaddr(&ap
->addr
, ipv
[foundj
]);
1117 st
= adns__mkquery_frdgram(pai
->ads
, &pai
->qu
->vb
, &id
,
1118 pai
->dgram
, pai
->dglen
, dmstart
,
1119 ap
->ai
->rrtype
, adns_qf_quoteok_query
);
1123 ctx
.callback
= icb_ptr
;
1124 memset(&ctx
.info
,0,sizeof(ctx
.info
));
1125 st
= adns__internal_submit(pai
->ads
, &nqu
, adns__findtype(ap
->ai
->rrtype
),
1126 ap
->ai
->rrtype
, &pai
->qu
->vb
, id
,
1127 adns_qf_quoteok_query
, pai
->now
, &ctx
);
1130 nqu
->parent
= pai
->qu
;
1131 LIST_LINK_TAIL_PART(pai
->qu
->children
,nqu
,siblings
.);
1139 static void mf_strpair(adns_query qu
, void *datap
) {
1140 adns_rr_strpair
*rrp
= datap
;
1142 adns__makefinal_str(qu
,&rrp
->array
[0]);
1143 adns__makefinal_str(qu
,&rrp
->array
[1]);
1150 static void mf_intstrpair(adns_query qu
, void *datap
) {
1151 adns_rr_intstrpair
*rrp
= datap
;
1153 adns__makefinal_str(qu
,&rrp
->array
[0].str
);
1154 adns__makefinal_str(qu
,&rrp
->array
[1].str
);
1161 static adns_status
pa_hinfo(const parseinfo
*pai
, int cbyte
,
1162 int max
, void *datap
) {
1163 adns_rr_intstrpair
*rrp
= datap
;
1167 for (i
=0; i
<2; i
++) {
1168 st
= pap_qstring(pai
, &cbyte
, max
, &rrp
->array
[i
].i
, &rrp
->array
[i
].str
);
1172 if (cbyte
!= max
) return adns_s_invaliddata
;
1181 static adns_status
pap_mailbox822(const parseinfo
*pai
,
1182 int *cbyte_io
, int max
, char **mb_r
) {
1183 int lablen
, labstart
, i
, needquote
, c
, r
, neednorm
;
1184 const unsigned char *p
;
1186 findlabel_state fls
;
1192 adns__findlabel_start(&fls
, pai
->ads
,
1194 pai
->dgram
, pai
->dglen
, max
,
1195 *cbyte_io
, cbyte_io
);
1196 st
= adns__findlabel_next(&fls
,&lablen
,&labstart
);
1198 adns__vbuf_appendstr(vb
,".");
1203 for (i
=0, needquote
=0, p
= pai
->dgram
+labstart
; i
<lablen
; i
++) {
1205 if ((c
&~128) < 32 || (c
&~128) == 127) return adns_s_invaliddata
;
1206 if (c
== '.' && !neednorm
) neednorm
= 1;
1207 else if (c
==' ' || c
>=127 || ctype_822special(c
)) needquote
++;
1211 if (needquote
|| neednorm
) {
1212 r
= adns__vbuf_ensure(vb
, lablen
+needquote
+4); if (!r
) R_NOMEM
;
1213 adns__vbuf_appendq(vb
,"\"",1);
1214 for (i
=0, needquote
=0, p
= pai
->dgram
+labstart
; i
<lablen
; i
++, p
++) {
1216 if (c
== '"' || c
=='\\') adns__vbuf_appendq(vb
,"\\",1);
1217 adns__vbuf_appendq(vb
,p
,1);
1219 adns__vbuf_appendq(vb
,"\"",1);
1221 r
= adns__vbuf_append(vb
, pai
->dgram
+labstart
, lablen
); if (!r
) R_NOMEM
;
1224 r
= adns__vbuf_appendstr(vb
,"@"); if (!r
) R_NOMEM
;
1226 st
= adns__parse_domain_more(&fls
,pai
->ads
, pai
->qu
,vb
,0, pai
->dgram
);
1230 str
= adns__alloc_interim(pai
->qu
, vb
->used
+1); if (!str
) R_NOMEM
;
1231 memcpy(str
,vb
->buf
,vb
->used
);
1237 static adns_status
pap_mailbox(const parseinfo
*pai
, int *cbyte_io
, int max
,
1239 if (pai
->qu
->typei
->typekey
& adns__qtf_mail822
) {
1240 return pap_mailbox822(pai
, cbyte_io
, max
, mb_r
);
1242 return pap_domain(pai
, cbyte_io
, max
, mb_r
, pdf_quoteok
);
1246 static adns_status
csp_mailbox(vbuf
*vb
, const char *mailbox
) {
1247 return csp_domain(vb
,mailbox
);
1254 static adns_status
pa_rp(const parseinfo
*pai
, int cbyte
,
1255 int max
, void *datap
) {
1256 adns_rr_strpair
*rrp
= datap
;
1259 st
= pap_mailbox(pai
, &cbyte
, max
, &rrp
->array
[0]);
1262 st
= pap_domain(pai
, &cbyte
, max
, &rrp
->array
[1], pdf_quoteok
);
1265 if (cbyte
!= max
) return adns_s_invaliddata
;
1269 static adns_status
cs_rp(vbuf
*vb
, const void *datap
) {
1270 const adns_rr_strpair
*rrp
= datap
;
1273 st
= csp_mailbox(vb
,rrp
->array
[0]); if (st
) return st
;
1275 st
= csp_domain(vb
,rrp
->array
[1]); if (st
) return st
;
1284 static adns_status
pa_soa(const parseinfo
*pai
, int cbyte
,
1285 int max
, void *datap
) {
1286 adns_rr_soa
*rrp
= datap
;
1287 const byte
*dgram
= pai
->dgram
;
1291 st
= pap_domain(pai
, &cbyte
, max
, &rrp
->mname
,
1292 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
1295 st
= pap_mailbox(pai
, &cbyte
, max
, &rrp
->rname
);
1298 if (cbyte
+20 != max
) return adns_s_invaliddata
;
1300 for (i
=0; i
<5; i
++) {
1303 (&rrp
->serial
)[i
]= (msw
<<16) | lsw
;
1309 static void mf_soa(adns_query qu
, void *datap
) {
1310 adns_rr_soa
*rrp
= datap
;
1312 adns__makefinal_str(qu
,&rrp
->mname
);
1313 adns__makefinal_str(qu
,&rrp
->rname
);
1316 static adns_status
cs_soa(vbuf
*vb
, const void *datap
) {
1317 const adns_rr_soa
*rrp
= datap
;
1322 st
= csp_domain(vb
,rrp
->mname
); if (st
) return st
;
1324 st
= csp_mailbox(vb
,rrp
->rname
); if (st
) return st
;
1326 for (i
=0; i
<5; i
++) {
1327 sprintf(buf
," %lu",(&rrp
->serial
)[i
]);
1335 * _srv* (pa*2,di,cs*2,qdpl,postsort)
1338 static adns_status
qdpl_srv(adns_state ads
,
1339 const char **p_io
, const char *pe
, int labelnum
,
1340 char label_r
[DNS_MAXDOMAIN
], int *ll_io
,
1341 adns_queryflags flags
,
1342 const typeinfo
*typei
) {
1347 if (labelnum
< 2 && !(flags
& adns_qf_quoteok_query
)) {
1348 useflags
= adns_qf_quoteok_query
;
1354 st
= adns__qdpl_normal(ads
, p_io
,pe
, labelnum
,label_r
, ll_io
, useflags
,typei
);
1359 if (!ll
|| label_r
[0]!='_')
1360 return adns_s_querydomaininvalid
;
1361 if (memchr(p_orig
+1, '\\', pe
- (p_orig
+1)))
1362 return adns_s_querydomaininvalid
;
1367 static adns_status
pap_srv_begin(const parseinfo
*pai
, int *cbyte_io
, int max
,
1369 /* might be adns_rr_srvraw* */) {
1370 const byte
*dgram
= pai
->dgram
;
1374 if ((*cbyte_io
+= 6) > max
) return adns_s_invaliddata
;
1376 rrp
->priority
= GET_W(cbyte
, ti
);
1377 rrp
->weight
= GET_W(cbyte
, ti
);
1378 rrp
->port
= GET_W(cbyte
, ti
);
1382 static adns_status
pa_srvraw(const parseinfo
*pai
, int cbyte
,
1383 int max
, void *datap
) {
1384 adns_rr_srvraw
*rrp
= datap
;
1387 st
= pap_srv_begin(pai
,&cbyte
,max
,datap
);
1390 st
= pap_domain(pai
, &cbyte
, max
, &rrp
->host
,
1391 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
1394 if (cbyte
!= max
) return adns_s_invaliddata
;
1398 static adns_status
pa_srvha(const parseinfo
*pai
, int cbyte
,
1399 int max
, void *datap
) {
1400 adns_rr_srvha
*rrp
= datap
;
1403 st
= pap_srv_begin(pai
,&cbyte
,max
,datap
); if (st
) return st
;
1404 st
= pap_hostaddr(pai
, &cbyte
, max
, &rrp
->ha
); if (st
) return st
;
1405 if (cbyte
!= max
) return adns_s_invaliddata
;
1409 static void mf_srvraw(adns_query qu
, void *datap
) {
1410 adns_rr_srvraw
*rrp
= datap
;
1411 adns__makefinal_str(qu
, &rrp
->host
);
1414 static void mf_srvha(adns_query qu
, void *datap
) {
1415 adns_rr_srvha
*rrp
= datap
;
1416 mfp_hostaddr(qu
,&rrp
->ha
);
1419 static int di_srv(adns_state ads
, const void *datap_a
, const void *datap_b
) {
1420 const adns_rr_srvraw
*ap
= datap_a
, *bp
= datap_b
;
1421 /* might be const adns_rr_svhostaddr* */
1423 if (ap
->priority
< bp
->priority
) return 0;
1424 if (ap
->priority
> bp
->priority
) return 1;
1428 static adns_status
csp_srv_begin(vbuf
*vb
, const adns_rr_srvha
*rrp
1429 /* might be adns_rr_srvraw* */) {
1431 sprintf(buf
,"%u %u %u ", rrp
->priority
, rrp
->weight
, rrp
->port
);
1436 static adns_status
cs_srvraw(vbuf
*vb
, const void *datap
) {
1437 const adns_rr_srvraw
*rrp
= datap
;
1440 st
= csp_srv_begin(vb
,(const void*)rrp
); if (st
) return st
;
1441 return csp_domain(vb
,rrp
->host
);
1444 static adns_status
cs_srvha(vbuf
*vb
, const void *datap
) {
1445 const adns_rr_srvha
*rrp
= datap
;
1448 st
= csp_srv_begin(vb
,(const void*)datap
); if (st
) return st
;
1449 return csp_hostaddr(vb
,&rrp
->ha
);
1452 static void postsort_srv(adns_state ads
, void *array
, int nrrs
,
1453 const struct typeinfo
*typei
) {
1454 /* we treat everything in the array as if it were an adns_rr_srvha
1455 * even though the array might be of adns_rr_srvraw. That's OK
1456 * because they have the same prefix, which is all we access.
1457 * We use typei->rrsz, too, rather than naive array indexing, of course.
1459 char *workbegin
, *workend
, *search
, *arrayend
;
1460 const adns_rr_srvha
*rr
;
1461 union { adns_rr_srvha ha
; adns_rr_srvraw raw
; } rrtmp
;
1462 int cpriority
, totalweight
, runtotal
;
1465 for (workbegin
= array
, arrayend
= workbegin
+ typei
->rrsz
* nrrs
;
1466 workbegin
< arrayend
;
1467 workbegin
= workend
) {
1468 cpriority
= (rr
=(void*)workbegin
)->priority
;
1470 for (workend
= workbegin
, totalweight
= 0;
1471 workend
< arrayend
&& (rr
=(void*)workend
)->priority
== cpriority
;
1472 workend
+= typei
->rrsz
) {
1473 totalweight
+= rr
->weight
;
1476 /* Now workbegin..(workend-1) incl. are exactly all of the RRs of
1477 * cpriority. From now on, workbegin points to the `remaining'
1478 * records: we select one record at a time (RFC2782 `Usage rules'
1479 * and `Format of the SRV RR' subsection `Weight') to place at
1480 * workbegin (swapping with the one that was there, and then
1481 * advance workbegin. */
1483 workbegin
+ typei
->rrsz
< workend
; /* don't bother if just one */
1484 workbegin
+= typei
->rrsz
) {
1486 randval
= nrand48(ads
->rand48xsubi
);
1487 randval
%= (totalweight
+ 1);
1488 /* makes it into 0..totalweight inclusive; with 2^10 RRs,
1489 * totalweight must be <= 2^26 so probability nonuniformity is
1490 * no worse than 1 in 2^(31-26) ie 1 in 2^5, ie
1491 * abs(log(P_intended(RR_i) / P_actual(RR_i)) <= log(2^-5).
1494 for (search
=workbegin
, runtotal
=0;
1495 (runtotal
+= (rr
=(void*)search
)->weight
) < randval
;
1496 search
+= typei
->rrsz
);
1497 assert(search
< arrayend
);
1498 totalweight
-= rr
->weight
;
1499 if (search
!= workbegin
) {
1500 memcpy(&rrtmp
, workbegin
, typei
->rrsz
);
1501 memcpy(workbegin
, search
, typei
->rrsz
);
1502 memcpy(search
, &rrtmp
, typei
->rrsz
);
1507 * dig -t srv _srv._tcp.test.iwj.relativity.greenend.org.uk.
1508 * ./adnshost_s -t srv- _sip._udp.voip.net.cam.ac.uk.
1509 * ./adnshost_s -t srv- _jabber._tcp.jabber.org
1517 static void mf_byteblock(adns_query qu
, void *datap
) {
1518 adns_rr_byteblock
*rrp
= datap
;
1519 void *bytes
= rrp
->data
;
1520 adns__makefinal_block(qu
,&bytes
,rrp
->len
);
1528 static adns_status
pa_opaque(const parseinfo
*pai
, int cbyte
,
1529 int max
, void *datap
) {
1530 adns_rr_byteblock
*rrp
= datap
;
1532 rrp
->len
= max
- cbyte
;
1533 rrp
->data
= adns__alloc_interim(pai
->qu
, rrp
->len
);
1534 if (!rrp
->data
) R_NOMEM
;
1535 memcpy(rrp
->data
, pai
->dgram
+ cbyte
, rrp
->len
);
1539 static adns_status
cs_opaque(vbuf
*vb
, const void *datap
) {
1540 const adns_rr_byteblock
*rrp
= datap
;
1545 sprintf(buf
,"\\# %d",rrp
->len
);
1548 for (l
= rrp
->len
, p
= rrp
->data
;
1551 sprintf(buf
," %02x%02x%02x%02x",p
[0],p
[1],p
[2],p
[3]);
1557 sprintf(buf
," %02x",*p
);
1567 static void mf_flat(adns_query qu
, void *data
) { }
1573 #define TYPESZ_M(member) (sizeof(*((adns_answer*)0)->rrs.member))
1575 #define DEEP_MEMB(memb) TYPESZ_M(memb), mf_##memb, cs_##memb
1576 #define FLAT_MEMB(memb) TYPESZ_M(memb), mf_flat, cs_##memb
1578 #define DEEP_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \
1579 { adns_r_##code & adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), \
1580 mf_##memb, printer,parser,comparer, adns__qdpl_normal,0,0 }
1581 #define FLAT_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \
1582 { adns_r_##code & adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), \
1583 mf_flat, printer,parser,comparer, adns__qdpl_normal,0,0 }
1584 #define XTRA_TYPE(code,rrt,fmt,memb,parser,comparer,printer, \
1585 makefinal,qdpl,postsort,sender) \
1586 { adns_r_##code & adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), makefinal, \
1587 printer,parser,comparer,qdpl,postsort,sender }
1589 static const typeinfo typeinfos
[] = {
1590 /* Must be in ascending order of rrtype ! */
1591 /* mem-mgmt code rrt fmt member parser comparer printer */
1593 FLAT_TYPE(a
, "A", 0, inaddr
, pa_inaddr
, di_inaddr
,cs_inaddr
),
1594 DEEP_TYPE(ns_raw
, "NS", "raw",str
, pa_host_raw
,0, cs_domain
),
1595 DEEP_TYPE(cname
, "CNAME", 0, str
, pa_dom_raw
, 0, cs_domain
),
1596 DEEP_TYPE(soa_raw
,"SOA", "raw",soa
, pa_soa
, 0, cs_soa
),
1597 DEEP_TYPE(ptr_raw
,"PTR", "raw",str
, pa_host_raw
,0, cs_domain
),
1598 DEEP_TYPE(hinfo
, "HINFO", 0, intstrpair
,pa_hinfo
, 0, cs_hinfo
),
1599 DEEP_TYPE(mx_raw
, "MX", "raw",intstr
, pa_mx_raw
, di_mx_raw
,cs_inthost
),
1600 DEEP_TYPE(txt
, "TXT", 0, manyistr
,pa_txt
, 0, cs_txt
),
1601 DEEP_TYPE(rp_raw
, "RP", "raw",strpair
, pa_rp
, 0, cs_rp
),
1602 FLAT_TYPE(aaaa
, "AAAA", 0, in6addr
, pa_in6addr
, di_in6addr
,cs_in6addr
),
1603 XTRA_TYPE(srv_raw
,"SRV", "raw",srvraw
, pa_srvraw
, di_srv
, cs_srvraw
,
1604 mf_srvraw
, qdpl_srv
, postsort_srv
, 0),
1606 XTRA_TYPE(addr
, "A", "addr", addr
, pa_addr
, di_addr
, cs_addr
,
1607 mf_flat
, adns__qdpl_normal
, 0, qs_addr
),
1608 DEEP_TYPE(ns
, "NS", "+addr",hostaddr
,pa_hostaddr
,di_hostaddr
,cs_hostaddr
),
1609 DEEP_TYPE(ptr
, "PTR","checked",str
, pa_ptr
, 0, cs_domain
),
1610 DEEP_TYPE(mx
, "MX", "+addr",inthostaddr
,pa_mx
, di_mx
, cs_inthostaddr
),
1611 XTRA_TYPE(srv
, "SRV","+addr",srvha
, pa_srvha
, di_srv
, cs_srvha
,
1612 mf_srvha
, qdpl_srv
, postsort_srv
, 0),
1614 DEEP_TYPE(soa
, "SOA","822", soa
, pa_soa
, 0, cs_soa
),
1615 DEEP_TYPE(rp
, "RP", "822", strpair
, pa_rp
, 0, cs_rp
),
1618 static const typeinfo typeinfo_unknown
=
1619 DEEP_TYPE(unknown
,0, "unknown",byteblock
,pa_opaque
, 0, cs_opaque
);
1621 const typeinfo
*adns__findtype(adns_rrtype type
) {
1622 const typeinfo
*begin
, *end
, *mid
;
1624 if (type
& adns_r_unknown
) return &typeinfo_unknown
;
1625 type
&= adns_rrt_reprmask
;
1627 begin
= typeinfos
; end
= typeinfos
+(sizeof(typeinfos
)/sizeof(typeinfo
));
1629 while (begin
< end
) {
1630 mid
= begin
+ ((end
-begin
)>>1);
1631 if (mid
->typekey
== type
) return mid
;
1632 if (type
> mid
->typekey
) begin
= mid
+1;