3 * - RR-type-specific code, and the machinery to call it
7 * Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
9 * It is part of adns, which is
10 * Copyright (C) 1997-2000 Ian Jackson <ian@davenant.greenend.org.uk>
11 * Copyright (C) 1999-2000 Tony Finch <dot@dotat.at>
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2, or (at your option)
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software Foundation,
25 * 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>
37 #define R_NOMEM return adns_s_nomemory
38 #define CSP_ADDSTR(s) do { \
39 if (!adns__vbuf_appendstr(vb,(s))) R_NOMEM; \
46 * _textdata, _qstring (csp)
52 * _addr (pa,di,csp,cs)
55 * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +pap_findaddrs)
58 * _inthostaddr (mf,cs)
63 * _mailbox (pap +pap_mailbox822)
68 * within each section:
83 static adns_status
pap_qstring(const parseinfo
*pai
, int *cbyte_io
, int max
,
84 int *len_r
, char **str_r
) {
85 /* Neither len_r nor str_r may be null.
86 * End of datagram (overrun) is indicated by returning adns_s_invaliddata;
88 const byte
*dgram
= pai
->dgram
;
94 if (cbyte
>= max
) return adns_s_invaliddata
;
96 if (cbyte
+l
> max
) return adns_s_invaliddata
;
98 str
= adns__alloc_interim(pai
->qu
, l
+1);
102 memcpy(str
,dgram
+cbyte
,l
);
111 static adns_status
csp_qstring(vbuf
*vb
, const char *dp
, int len
) {
117 for (cn
=0; cn
<len
; cn
++) {
121 } else if (ch
== '"') {
123 } else if (ch
>= 32 && ch
<= 126) {
124 if (!adns__vbuf_append(vb
,&ch
,1)) R_NOMEM
;
126 sprintf(buf
,"\\x%02x",ch
);
139 static void mf_str(adns_query qu
, void *datap
) {
142 adns__makefinal_str(qu
,rrp
);
149 static void mf_intstr(adns_query qu
, void *datap
) {
150 adns_rr_intstr
*rrp
= datap
;
152 adns__makefinal_str(qu
,&rrp
->str
);
159 static void mf_manyistr(adns_query qu
, void *datap
) {
160 adns_rr_intstr
**rrp
= datap
;
161 adns_rr_intstr
*te
, *table
;
165 for (tc
=0, te
= *rrp
; te
->i
>= 0; te
++, tc
++);
167 adns__makefinal_block(qu
,&tablev
,sizeof(*te
)*(tc
+1));
169 for (te
= *rrp
; te
->i
>= 0; te
++)
170 adns__makefinal_str(qu
,&te
->str
);
177 static adns_status
pa_txt(const parseinfo
*pai
, int cbyte
,
178 int max
, void *datap
) {
179 adns_rr_intstr
**rrp
= datap
, *table
, *te
;
180 const byte
*dgram
= pai
->dgram
;
181 int ti
, tc
, l
, startbyte
;
185 if (cbyte
>= max
) return adns_s_invaliddata
;
187 while (cbyte
< max
) {
192 if (cbyte
!= max
|| !tc
) return adns_s_invaliddata
;
194 table
= adns__alloc_interim(pai
->qu
,sizeof(*table
)*(tc
+1));
197 for (cbyte
=startbyte
, ti
=0, te
=table
; ti
<tc
; ti
++, te
++) {
198 st
= pap_qstring(pai
, &cbyte
, max
, &te
->i
, &te
->str
);
201 assert(cbyte
== max
);
210 static adns_status
cs_txt(vbuf
*vb
, const void *datap
) {
211 const adns_rr_intstr
*const *rrp
= datap
;
212 const adns_rr_intstr
*current
;
216 for (current
= *rrp
, spc
=0; current
->i
>= 0; current
++, spc
=1) {
217 if (spc
) CSP_ADDSTR(" ");
218 st
= csp_qstring(vb
,current
->str
,current
->i
); if (st
) return st
;
227 static adns_status
cs_hinfo(vbuf
*vb
, const void *datap
) {
228 const adns_rr_intstrpair
*rrp
= datap
;
231 st
= csp_qstring(vb
,rrp
->array
[0].str
,rrp
->array
[0].i
); if (st
) return st
;
233 st
= csp_qstring(vb
,rrp
->array
[1].str
,rrp
->array
[1].i
); if (st
) return st
;
238 * _inaddr (pa,dip,di)
241 static adns_status
pa_inaddr(const parseinfo
*pai
, int cbyte
,
242 int max
, void *datap
) {
243 struct in_addr
*storeto
= datap
;
245 if (max
-cbyte
!= 4) return adns_s_invaliddata
;
246 memcpy(storeto
, pai
->dgram
+ cbyte
, 4);
250 static int search_sortlist(adns_state ads
, struct in_addr ad
) {
251 const struct sortlist
*slp
;
254 for (i
=0, slp
=ads
->sortlist
;
256 !((ad
.s_addr
& slp
->mask
.s_addr
) == slp
->base
.s_addr
);
261 static int dip_inaddr(adns_state ads
, struct in_addr a
, struct in_addr b
) {
264 if (!ads
->nsortlist
) return 0;
266 ai
= search_sortlist(ads
,a
);
267 bi
= search_sortlist(ads
,b
);
271 static int di_inaddr(adns_state ads
,
272 const void *datap_a
, const void *datap_b
) {
273 const struct in_addr
*ap
= datap_a
, *bp
= datap_b
;
275 return dip_inaddr(ads
,*ap
,*bp
);
278 static adns_status
cs_inaddr(vbuf
*vb
, const void *datap
) {
279 const struct in_addr
*rrp
= datap
, rr
= *rrp
;
282 ia
= inet_ntoa(rr
); assert(ia
);
288 * _addr (pa,di,csp,cs)
291 static adns_status
pa_addr(const parseinfo
*pai
, int cbyte
,
292 int max
, void *datap
) {
293 adns_rr_addr
*storeto
= datap
;
294 const byte
*dgram
= pai
->dgram
;
296 if (max
-cbyte
!= 4) return adns_s_invaliddata
;
297 storeto
->len
= sizeof(storeto
->addr
.inet
);
298 memset(&storeto
->addr
,0,sizeof(storeto
->addr
.inet
));
299 storeto
->addr
.inet
.sin_family
= AF_INET
;
300 memcpy(&storeto
->addr
.inet
.sin_addr
,dgram
+cbyte
,4);
304 static int di_addr(adns_state ads
, const void *datap_a
, const void *datap_b
) {
305 const adns_rr_addr
*ap
= datap_a
, *bp
= datap_b
;
307 assert(ap
->addr
.sa
.sa_family
== AF_INET
);
308 return dip_inaddr(ads
, ap
->addr
.inet
.sin_addr
, bp
->addr
.inet
.sin_addr
);
311 static int div_addr(void *context
, const void *datap_a
, const void *datap_b
) {
312 const adns_state ads
= context
;
314 return di_addr(ads
, datap_a
, datap_b
);
317 static adns_status
csp_addr(vbuf
*vb
, const adns_rr_addr
*rrp
) {
321 switch (rrp
->addr
.inet
.sin_family
) {
324 ia
= inet_ntoa(rrp
->addr
.inet
.sin_addr
); assert(ia
);
328 sprintf(buf
,"AF=%u",rrp
->addr
.sa
.sa_family
);
335 static adns_status
cs_addr(vbuf
*vb
, const void *datap
) {
336 const adns_rr_addr
*rrp
= datap
;
338 return csp_addr(vb
,rrp
);
342 * _domain (pap,csp,cs)
346 static adns_status
pap_domain(const parseinfo
*pai
, int *cbyte_io
, int max
,
347 char **domain_r
, parsedomain_flags flags
) {
351 st
= adns__parse_domain(pai
->qu
->ads
, pai
->serv
, pai
->qu
, &pai
->qu
->vb
, flags
,
352 pai
->dgram
,pai
->dglen
, cbyte_io
, max
);
354 if (!pai
->qu
->vb
.used
) return adns_s_invaliddata
;
356 dm
= adns__alloc_interim(pai
->qu
, pai
->qu
->vb
.used
+1);
359 dm
[pai
->qu
->vb
.used
]= 0;
360 memcpy(dm
,pai
->qu
->vb
.buf
,pai
->qu
->vb
.used
);
366 static adns_status
csp_domain(vbuf
*vb
, const char *domain
) {
368 if (!*domain
) CSP_ADDSTR(".");
372 static adns_status
cs_domain(vbuf
*vb
, const void *datap
) {
373 const char *const *domainp
= datap
;
374 return csp_domain(vb
,*domainp
);
377 static adns_status
pa_dom_raw(const parseinfo
*pai
, int cbyte
,
378 int max
, void *datap
) {
382 st
= pap_domain(pai
, &cbyte
, max
, rrp
, pdf_quoteok
);
385 if (cbyte
!= max
) return adns_s_invaliddata
;
393 static adns_status
pa_host_raw(const parseinfo
*pai
, int cbyte
,
394 int max
, void *datap
) {
398 st
= pap_domain(pai
, &cbyte
, max
, rrp
,
399 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
402 if (cbyte
!= max
) return adns_s_invaliddata
;
407 * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +icb_hostaddr, pap_findaddrs)
410 static adns_status
pap_findaddrs(const parseinfo
*pai
, adns_rr_hostaddr
*ha
,
411 int *cbyte_io
, int count
, int dmstart
) {
413 int type
, class, rdlen
, rdstart
, ownermatched
;
417 for (rri
=0, naddrs
=-1; rri
<count
; rri
++) {
418 st
= adns__findrr_anychk(pai
->qu
, pai
->serv
, pai
->dgram
,
419 pai
->dglen
, cbyte_io
,
420 &type
, &class, &ttl
, &rdlen
, &rdstart
,
421 pai
->dgram
, pai
->dglen
, dmstart
, &ownermatched
);
423 if (!ownermatched
|| class != DNS_CLASS_IN
|| type
!= adns_r_a
) {
424 if (naddrs
>0) break; else continue;
429 if (!adns__vbuf_ensure(&pai
->qu
->vb
, (naddrs
+1)*sizeof(adns_rr_addr
)))
431 adns__update_expires(pai
->qu
,ttl
,pai
->now
);
432 st
= pa_addr(pai
, rdstart
,rdstart
+rdlen
,
433 pai
->qu
->vb
.buf
+ naddrs
*sizeof(adns_rr_addr
));
438 ha
->addrs
= adns__alloc_interim(pai
->qu
, naddrs
*sizeof(adns_rr_addr
));
439 if (!ha
->addrs
) R_NOMEM
;
440 memcpy(ha
->addrs
, pai
->qu
->vb
.buf
, naddrs
*sizeof(adns_rr_addr
));
442 ha
->astatus
= adns_s_ok
;
444 adns__isort(ha
->addrs
, naddrs
, sizeof(adns_rr_addr
), pai
->qu
->vb
.buf
,
450 static void icb_hostaddr(adns_query parent
, adns_query child
) {
451 adns_answer
*cans
= child
->answer
;
452 adns_rr_hostaddr
*rrp
= child
->ctx
.info
.hostaddr
;
453 adns_state ads
= parent
->ads
;
458 rrp
->naddrs
= (st
>0 && st
<=adns_s_max_tempfail
) ?
-1 : cans
->nrrs
;
459 rrp
->addrs
= cans
->rrs
.addr
;
460 adns__transfer_interim(child
, parent
, rrp
->addrs
,
461 rrp
->naddrs
*sizeof(adns_rr_addr
));
463 if (parent
->children
.head
) {
464 LIST_LINK_TAIL(ads
->childw
,parent
);
466 adns__query_done(parent
);
470 static adns_status
pap_hostaddr(const parseinfo
*pai
, int *cbyte_io
,
471 int max
, adns_rr_hostaddr
*rrp
) {
477 adns_queryflags nflags
;
479 dmstart
= cbyte
= *cbyte_io
;
480 st
= pap_domain(pai
, &cbyte
, max
, &rrp
->host
,
481 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
485 rrp
->astatus
= adns_s_ok
;
491 st
= pap_findaddrs(pai
, rrp
, &cbyte
, pai
->nscount
, dmstart
);
493 if (rrp
->naddrs
!= -1) return adns_s_ok
;
495 st
= pap_findaddrs(pai
, rrp
, &cbyte
, pai
->arcount
, dmstart
);
497 if (rrp
->naddrs
!= -1) return adns_s_ok
;
499 st
= adns__mkquery_frdgram(pai
->ads
, &pai
->qu
->vb
, &id
,
500 pai
->dgram
, pai
->dglen
, dmstart
,
501 adns_r_addr
, adns_qf_quoteok_query
);
505 ctx
.callback
= icb_hostaddr
;
506 ctx
.info
.hostaddr
= rrp
;
508 nflags
= adns_qf_quoteok_query
;
509 if (!(pai
->qu
->flags
& adns_qf_cname_loose
)) nflags
|= adns_qf_cname_forbid
;
511 st
= adns__internal_submit(pai
->ads
, &nqu
, adns__findtype(adns_r_addr
),
512 &pai
->qu
->vb
, id
, nflags
, pai
->now
, &ctx
);
515 nqu
->parent
= pai
->qu
;
516 LIST_LINK_TAIL_PART(pai
->qu
->children
,nqu
,siblings
.);
521 static adns_status
pa_hostaddr(const parseinfo
*pai
, int cbyte
,
522 int max
, void *datap
) {
523 adns_rr_hostaddr
*rrp
= datap
;
526 st
= pap_hostaddr(pai
, &cbyte
, max
, rrp
);
528 if (cbyte
!= max
) return adns_s_invaliddata
;
533 static int dip_hostaddr(adns_state ads
,
534 const adns_rr_hostaddr
*ap
, const adns_rr_hostaddr
*bp
) {
535 if (ap
->astatus
!= bp
->astatus
) return ap
->astatus
;
536 if (ap
->astatus
) return 0;
538 assert(ap
->addrs
[0].addr
.sa
.sa_family
== AF_INET
);
539 assert(bp
->addrs
[0].addr
.sa
.sa_family
== AF_INET
);
540 return dip_inaddr(ads
,
541 ap
->addrs
[0].addr
.inet
.sin_addr
,
542 bp
->addrs
[0].addr
.inet
.sin_addr
);
545 static int di_hostaddr(adns_state ads
,
546 const void *datap_a
, const void *datap_b
) {
547 const adns_rr_hostaddr
*ap
= datap_a
, *bp
= datap_b
;
549 return dip_hostaddr(ads
, ap
,bp
);
552 static void mfp_hostaddr(adns_query qu
, adns_rr_hostaddr
*rrp
) {
555 adns__makefinal_str(qu
,&rrp
->host
);
557 adns__makefinal_block(qu
, &tablev
, rrp
->naddrs
*sizeof(*rrp
->addrs
));
561 static void mf_hostaddr(adns_query qu
, void *datap
) {
562 adns_rr_hostaddr
*rrp
= datap
;
564 mfp_hostaddr(qu
,rrp
);
567 static adns_status
csp_hostaddr(vbuf
*vb
, const adns_rr_hostaddr
*rrp
) {
573 st
= csp_domain(vb
,rrp
->host
); if (st
) return st
;
576 CSP_ADDSTR(adns_errtypeabbrev(rrp
->astatus
));
578 sprintf(buf
," %d ",rrp
->astatus
);
581 CSP_ADDSTR(adns_errabbrev(rrp
->astatus
));
584 errstr
= adns_strerror(rrp
->astatus
);
585 st
= csp_qstring(vb
,errstr
,strlen(errstr
)); if (st
) return st
;
587 if (rrp
->naddrs
>= 0) {
589 for (i
=0; i
<rrp
->naddrs
; i
++) {
591 st
= csp_addr(vb
,&rrp
->addrs
[i
]);
600 static adns_status
cs_hostaddr(vbuf
*vb
, const void *datap
) {
601 const adns_rr_hostaddr
*rrp
= datap
;
603 return csp_hostaddr(vb
,rrp
);
610 static adns_status
pa_mx_raw(const parseinfo
*pai
, int cbyte
,
611 int max
, void *datap
) {
612 const byte
*dgram
= pai
->dgram
;
613 adns_rr_intstr
*rrp
= datap
;
617 if (cbyte
+2 > max
) return adns_s_invaliddata
;
620 st
= pap_domain(pai
, &cbyte
, max
, &rrp
->str
,
621 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
624 if (cbyte
!= max
) return adns_s_invaliddata
;
628 static int di_mx_raw(adns_state ads
, const void *datap_a
, const void *datap_b
) {
629 const adns_rr_intstr
*ap
= datap_a
, *bp
= datap_b
;
631 if (ap
->i
< bp
->i
) return 0;
632 if (ap
->i
> bp
->i
) return 1;
640 static adns_status
pa_mx(const parseinfo
*pai
, int cbyte
,
641 int max
, void *datap
) {
642 const byte
*dgram
= pai
->dgram
;
643 adns_rr_inthostaddr
*rrp
= datap
;
647 if (cbyte
+2 > max
) return adns_s_invaliddata
;
650 st
= pap_hostaddr(pai
, &cbyte
, max
, &rrp
->ha
);
653 if (cbyte
!= max
) return adns_s_invaliddata
;
657 static int di_mx(adns_state ads
, const void *datap_a
, const void *datap_b
) {
658 const adns_rr_inthostaddr
*ap
= datap_a
, *bp
= datap_b
;
660 if (ap
->i
< bp
->i
) return 0;
661 if (ap
->i
> bp
->i
) return 1;
662 return dip_hostaddr(ads
, &ap
->ha
, &bp
->ha
);
666 * _inthostaddr (mf,cs)
669 static void mf_inthostaddr(adns_query qu
, void *datap
) {
670 adns_rr_inthostaddr
*rrp
= datap
;
672 mfp_hostaddr(qu
,&rrp
->ha
);
675 static adns_status
cs_inthostaddr(vbuf
*vb
, const void *datap
) {
676 const adns_rr_inthostaddr
*rrp
= datap
;
679 sprintf(buf
,"%u ",rrp
->i
);
682 return csp_hostaddr(vb
,&rrp
->ha
);
689 static adns_status
cs_inthost(vbuf
*vb
, const void *datap
) {
690 const adns_rr_intstr
*rrp
= datap
;
693 sprintf(buf
,"%u ",rrp
->i
);
695 return csp_domain(vb
,rrp
->str
);
699 * _ptr (pa, +icb_ptr)
702 static void icb_ptr(adns_query parent
, adns_query child
) {
703 adns_answer
*cans
= child
->answer
;
704 const adns_rr_addr
*queried
, *found
;
705 adns_state ads
= parent
->ads
;
708 if (cans
->status
== adns_s_nxdomain
|| cans
->status
== adns_s_nodata
) {
709 adns__query_fail(parent
,adns_s_inconsistent
);
711 } else if (cans
->status
) {
712 adns__query_fail(parent
,cans
->status
);
716 queried
= &parent
->ctx
.info
.ptr_parent_addr
;
717 for (i
=0, found
=cans
->rrs
.addr
; i
<cans
->nrrs
; i
++, found
++) {
718 if (queried
->len
== found
->len
&&
719 !memcmp(&queried
->addr
,&found
->addr
,queried
->len
)) {
720 if (!parent
->children
.head
) {
721 adns__query_done(parent
);
724 LIST_LINK_TAIL(ads
->childw
,parent
);
730 adns__query_fail(parent
,adns_s_inconsistent
);
733 static adns_status
pa_ptr(const parseinfo
*pai
, int dmstart
,
734 int max
, void *datap
) {
735 static const char *(expectdomain
[])= { DNS_INADDR_ARPA
};
744 int cbyte
, i
, lablen
, labstart
, l
, id
;
749 st
= pap_domain(pai
, &cbyte
, max
, rrp
,
750 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
752 if (cbyte
!= max
) return adns_s_invaliddata
;
754 ap
= &pai
->qu
->ctx
.info
.ptr_parent_addr
;
756 adns__findlabel_start(&fls
, pai
->ads
, -1, pai
->qu
,
757 pai
->qu
->query_dgram
, pai
->qu
->query_dglen
,
758 pai
->qu
->query_dglen
, DNS_HDRSIZE
, 0);
759 for (i
=0; i
<4; i
++) {
760 st
= adns__findlabel_next(&fls
,&lablen
,&labstart
); assert(!st
);
761 if (lablen
<=0 || lablen
>3) return adns_s_querydomainwrong
;
762 memcpy(labbuf
, pai
->qu
->query_dgram
+ labstart
, lablen
);
764 ipv
[3-i
]= strtoul(labbuf
,&ep
,10);
765 if (*ep
) return adns_s_querydomainwrong
;
766 if (lablen
>1 && pai
->qu
->query_dgram
[labstart
]=='0')
767 return adns_s_querydomainwrong
;
769 for (i
=0; i
<sizeof(expectdomain
)/sizeof(*expectdomain
); i
++) {
770 st
= adns__findlabel_next(&fls
,&lablen
,&labstart
); assert(!st
);
771 l
= strlen(expectdomain
[i
]);
773 memcmp(pai
->qu
->query_dgram
+ labstart
, expectdomain
[i
], l
))
774 return adns_s_querydomainwrong
;
776 st
= adns__findlabel_next(&fls
,&lablen
,0); assert(!st
);
777 if (lablen
) return adns_s_querydomainwrong
;
779 ap
->len
= sizeof(struct sockaddr_in
);
780 memset(&ap
->addr
,0,sizeof(ap
->addr
.inet
));
781 ap
->addr
.inet
.sin_family
= AF_INET
;
782 ap
->addr
.inet
.sin_addr
.s_addr
=
783 htonl((ipv
[0]<<24) | (ipv
[1]<<16) | (ipv
[2]<<8) | (ipv
[3]));
786 st
= adns__mkquery_frdgram(pai
->ads
, &pai
->qu
->vb
, &id
,
787 pai
->dgram
, pai
->dglen
, dmstart
,
788 adns_r_addr
, adns_qf_quoteok_query
);
792 ctx
.callback
= icb_ptr
;
793 memset(&ctx
.info
,0,sizeof(ctx
.info
));
794 st
= adns__internal_submit(pai
->ads
, &nqu
, adns__findtype(adns_r_addr
),
796 adns_qf_quoteok_query
, pai
->now
, &ctx
);
799 nqu
->parent
= pai
->qu
;
800 LIST_LINK_TAIL_PART(pai
->qu
->children
,nqu
,siblings
.);
808 static void mf_strpair(adns_query qu
, void *datap
) {
809 adns_rr_strpair
*rrp
= datap
;
811 adns__makefinal_str(qu
,&rrp
->array
[0]);
812 adns__makefinal_str(qu
,&rrp
->array
[1]);
819 static void mf_intstrpair(adns_query qu
, void *datap
) {
820 adns_rr_intstrpair
*rrp
= datap
;
822 adns__makefinal_str(qu
,&rrp
->array
[0].str
);
823 adns__makefinal_str(qu
,&rrp
->array
[1].str
);
830 static adns_status
pa_hinfo(const parseinfo
*pai
, int cbyte
,
831 int max
, void *datap
) {
832 adns_rr_intstrpair
*rrp
= datap
;
836 for (i
=0; i
<2; i
++) {
837 st
= pap_qstring(pai
, &cbyte
, max
, &rrp
->array
[i
].i
, &rrp
->array
[i
].str
);
841 if (cbyte
!= max
) return adns_s_invaliddata
;
850 static adns_status
pap_mailbox822(const parseinfo
*pai
,
851 int *cbyte_io
, int max
, char **mb_r
) {
852 int lablen
, labstart
, i
, needquote
, c
, r
, neednorm
;
853 const unsigned char *p
;
861 adns__findlabel_start(&fls
, pai
->ads
,
863 pai
->dgram
, pai
->dglen
, max
,
864 *cbyte_io
, cbyte_io
);
865 st
= adns__findlabel_next(&fls
,&lablen
,&labstart
);
867 adns__vbuf_appendstr(vb
,".");
872 for (i
=0, needquote
=0, p
= pai
->dgram
+labstart
; i
<lablen
; i
++) {
874 if ((c
&~128) < 32 || (c
&~128) == 127) return adns_s_invaliddata
;
875 if (c
== '.' && !neednorm
) neednorm
= 1;
876 else if (c
==' ' || c
>=127 || ctype_822special(c
)) needquote
++;
880 if (needquote
|| neednorm
) {
881 r
= adns__vbuf_ensure(vb
, lablen
+needquote
+4); if (!r
) R_NOMEM
;
882 adns__vbuf_appendq(vb
,"\"",1);
883 for (i
=0, needquote
=0, p
= pai
->dgram
+labstart
; i
<lablen
; i
++, p
++) {
885 if (c
== '"' || c
=='\\') adns__vbuf_appendq(vb
,"\\",1);
886 adns__vbuf_appendq(vb
,p
,1);
888 adns__vbuf_appendq(vb
,"\"",1);
890 r
= adns__vbuf_append(vb
, pai
->dgram
+labstart
, lablen
); if (!r
) R_NOMEM
;
893 r
= adns__vbuf_appendstr(vb
,"@"); if (!r
) R_NOMEM
;
895 st
= adns__parse_domain_more(&fls
,pai
->ads
, pai
->qu
,vb
,0, pai
->dgram
);
899 str
= adns__alloc_interim(pai
->qu
, vb
->used
+1); if (!str
) R_NOMEM
;
900 memcpy(str
,vb
->buf
,vb
->used
);
906 static adns_status
pap_mailbox(const parseinfo
*pai
, int *cbyte_io
, int max
,
908 if (pai
->qu
->typei
->type
& adns__qtf_mail822
) {
909 return pap_mailbox822(pai
, cbyte_io
, max
, mb_r
);
911 return pap_domain(pai
, cbyte_io
, max
, mb_r
, pdf_quoteok
);
915 static adns_status
csp_mailbox(vbuf
*vb
, const char *mailbox
) {
916 return csp_domain(vb
,mailbox
);
923 static adns_status
pa_rp(const parseinfo
*pai
, int cbyte
,
924 int max
, void *datap
) {
925 adns_rr_strpair
*rrp
= datap
;
928 st
= pap_mailbox(pai
, &cbyte
, max
, &rrp
->array
[0]);
931 st
= pap_domain(pai
, &cbyte
, max
, &rrp
->array
[1], pdf_quoteok
);
934 if (cbyte
!= max
) return adns_s_invaliddata
;
938 static adns_status
cs_rp(vbuf
*vb
, const void *datap
) {
939 const adns_rr_strpair
*rrp
= datap
;
942 st
= csp_mailbox(vb
,rrp
->array
[0]); if (st
) return st
;
944 st
= csp_domain(vb
,rrp
->array
[1]); if (st
) return st
;
953 static adns_status
pa_soa(const parseinfo
*pai
, int cbyte
,
954 int max
, void *datap
) {
955 adns_rr_soa
*rrp
= datap
;
956 const byte
*dgram
= pai
->dgram
;
960 st
= pap_domain(pai
, &cbyte
, max
, &rrp
->mname
,
961 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
964 st
= pap_mailbox(pai
, &cbyte
, max
, &rrp
->rname
);
967 if (cbyte
+20 != max
) return adns_s_invaliddata
;
969 for (i
=0; i
<5; i
++) {
972 (&rrp
->serial
)[i
]= (msw
<<16) | lsw
;
978 static void mf_soa(adns_query qu
, void *datap
) {
979 adns_rr_soa
*rrp
= datap
;
981 adns__makefinal_str(qu
,&rrp
->mname
);
982 adns__makefinal_str(qu
,&rrp
->rname
);
985 static adns_status
cs_soa(vbuf
*vb
, const void *datap
) {
986 const adns_rr_soa
*rrp
= datap
;
991 st
= csp_domain(vb
,rrp
->mname
); if (st
) return st
;
993 st
= csp_mailbox(vb
,rrp
->rname
); if (st
) return st
;
995 for (i
=0; i
<5; i
++) {
996 sprintf(buf
," %lu",(&rrp
->serial
)[i
]);
1007 static void mf_flat(adns_query qu
, void *data
) { }
1013 #define TYPESZ_M(member) (sizeof(*((adns_answer*)0)->rrs.member))
1015 #define DEEP_MEMB(memb) TYPESZ_M(memb), mf_##memb, cs_##memb
1016 #define FLAT_MEMB(memb) TYPESZ_M(memb), mf_flat, cs_##memb
1018 #define DEEP_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \
1019 { adns_r_##code, rrt,fmt,TYPESZ_M(memb), mf_##memb, printer,parser,comparer }
1020 #define FLAT_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \
1021 { adns_r_##code, rrt,fmt,TYPESZ_M(memb), mf_flat, printer,parser,comparer }
1023 static const typeinfo typeinfos
[] = {
1024 /* Must be in ascending order of rrtype ! */
1025 /* mem-mgmt code rrt fmt member parser comparer printer */
1027 FLAT_TYPE(a
, "A", 0, inaddr
, pa_inaddr
, di_inaddr
,cs_inaddr
),
1028 DEEP_TYPE(ns_raw
, "NS", "raw",str
, pa_host_raw
,0, cs_domain
),
1029 DEEP_TYPE(cname
, "CNAME", 0, str
, pa_dom_raw
, 0, cs_domain
),
1030 DEEP_TYPE(soa_raw
,"SOA", "raw",soa
, pa_soa
, 0, cs_soa
),
1031 DEEP_TYPE(ptr_raw
,"PTR", "raw",str
, pa_host_raw
,0, cs_domain
),
1032 DEEP_TYPE(hinfo
, "HINFO", 0, intstrpair
,pa_hinfo
, 0, cs_hinfo
),
1033 DEEP_TYPE(mx_raw
, "MX", "raw",intstr
, pa_mx_raw
, di_mx_raw
,cs_inthost
),
1034 DEEP_TYPE(txt
, "TXT", 0, manyistr
,pa_txt
, 0, cs_txt
),
1035 DEEP_TYPE(rp_raw
, "RP", "raw",strpair
, pa_rp
, 0, cs_rp
),
1037 FLAT_TYPE(addr
, "A", "addr", addr
, pa_addr
, di_addr
, cs_addr
),
1038 DEEP_TYPE(ns
, "NS", "+addr",hostaddr
,pa_hostaddr
,di_hostaddr
,cs_hostaddr
),
1039 DEEP_TYPE(ptr
, "PTR","checked",str
, pa_ptr
, 0, cs_domain
),
1040 DEEP_TYPE(mx
, "MX", "+addr",inthostaddr
,pa_mx
, di_mx
, cs_inthostaddr
),
1042 DEEP_TYPE(soa
, "SOA","822", soa
, pa_soa
, 0, cs_soa
),
1043 DEEP_TYPE(rp
, "RP", "822", strpair
, pa_rp
, 0, cs_rp
),
1046 const typeinfo
*adns__findtype(adns_rrtype type
) {
1047 const typeinfo
*begin
, *end
, *mid
;
1049 begin
= typeinfos
; end
= typeinfos
+(sizeof(typeinfos
)/sizeof(typeinfo
));
1051 while (begin
< end
) {
1052 mid
= begin
+ ((end
-begin
)>>1);
1053 if (mid
->type
== type
) return mid
;
1054 if (type
> mid
->type
) begin
= mid
+1;