3 * - RR-type-specific code, and the machinery to call it
6 * This file is part of adns, which is Copyright (C) 1997-1999 Ian Jackson
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2, or (at your option)
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software Foundation,
20 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 #include <sys/types.h>
27 #include <sys/socket.h>
28 #include <netinet/in.h>
29 #include <arpa/inet.h>
33 #define R_NOMEM return adns_s_nomemory
34 #define CSP_ADDSTR(s) do { if (!adns__vbuf_appendstr(vb,(s))) R_NOMEM; } while (0)
40 * _textdata, _qstring (csp)
46 * _addr (pa,di,csp,cs)
49 * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +pap_findaddrs)
52 * _inthostaddr (mf,cs)
57 * _mailbox (pap +pap_mailbox822)
62 * within each section:
75 * _textdata, _qstring (csp)
78 static adns_status
pap_string(const parseinfo
*pai
, int *cbyte_io
, int max
,
79 int *len_r
, char **str_r
) {
80 /* Neither len_r nor str_r may be null.
81 * End of datagram (overrun) is indicated by returning adns_s_invaliddata;
83 const byte
*dgram
= pai
->dgram
;
89 if (cbyte
>= max
) return adns_s_invaliddata
;
91 if (cbyte
+l
> max
) return adns_s_invaliddata
;
93 str
= adns__alloc_interim(pai
->qu
, l
+1);
97 memcpy(str
,dgram
+cbyte
,l
);
106 static adns_status
csp_textdata(vbuf
*vb
, const char *dp
, int len
) {
112 for (cn
=0; cn
<len
; cn
++) {
114 if (ch
>= 32 && ch
<= 126 && ch
!= '"' && ch
!= '\\') {
115 if (!adns__vbuf_append(vb
,&ch
,1)) R_NOMEM
;
116 } else if (ch
== '\\') {
119 sprintf(buf
,"\\x%02x",ch
);
128 static adns_status
csp_qstring(vbuf
*vb
, const char *dp
) {
129 return csp_textdata(vb
, dp
, strlen(dp
));
136 static void mf_str(adns_query qu
, void *datap
) {
139 adns__makefinal_str(qu
,rrp
);
142 static adns_status
cs_str(vbuf
*vb
, const void *datap
) {
143 const char *const *rrp
= datap
;
145 return csp_qstring(vb
,*rrp
);
149 * _intstr (mf,csp,cs)
152 static void mf_intstr(adns_query qu
, void *datap
) {
153 adns_rr_intstr
*rrp
= datap
;
155 adns__makefinal_str(qu
,&rrp
->str
);
158 static adns_status
csp_intstr(vbuf
*vb
, const adns_rr_intstr
*rrp
) {
161 sprintf(buf
,"%u ",rrp
->i
);
163 return csp_qstring(vb
,rrp
->str
);
166 static adns_status
cs_intstr(vbuf
*vb
, const void *datap
) {
167 const adns_rr_intstr
*rrp
= datap
;
169 return csp_intstr(vb
,rrp
);
176 static void mf_manyistr(adns_query qu
, void *datap
) {
177 adns_rr_intstr
**rrp
= datap
;
178 adns_rr_intstr
*te
, *table
;
182 for (tc
=0, te
= *rrp
; te
->i
>= 0; te
++, tc
++);
184 adns__makefinal_block(qu
,&tablev
,sizeof(*te
)*(tc
+1));
186 for (te
= *rrp
; te
->i
>= 0; te
++)
187 adns__makefinal_str(qu
,&te
->str
);
190 static adns_status
cs_manyistr(vbuf
*vb
, const void *datap
) {
191 const adns_rr_intstr
*const *rrp
= datap
;
192 const adns_rr_intstr
*current
;
196 for (spc
=0, current
= *rrp
; current
->i
>= 0; current
++) {
197 if (spc
) CSP_ADDSTR(" ");
198 st
= csp_textdata(vb
,current
->str
,current
->i
); if (st
) return st
;
207 static adns_status
pa_txt(const parseinfo
*pai
, int cbyte
, int max
, void *datap
) {
208 adns_rr_intstr
**rrp
= datap
, *table
, *te
;
209 const byte
*dgram
= pai
->dgram
;
210 int ti
, tc
, l
, startbyte
;
214 if (cbyte
>= max
) return adns_s_invaliddata
;
216 while (cbyte
< max
) {
221 if (cbyte
!= max
) return adns_s_invaliddata
;
223 table
= adns__alloc_interim(pai
->qu
,sizeof(*table
)*(tc
+1));
226 for (cbyte
=startbyte
, ti
=0, te
=table
; ti
<tc
; ti
++, te
++) {
227 st
= pap_string(pai
, &cbyte
, max
, &te
->i
, &te
->str
);
230 assert(cbyte
== max
);
240 * _inaddr (pa,dip,di)
243 static adns_status
pa_inaddr(const parseinfo
*pai
, int cbyte
, int max
, void *datap
) {
244 struct in_addr
*storeto
= datap
;
246 if (max
-cbyte
!= 4) return adns_s_invaliddata
;
247 memcpy(storeto
, pai
->dgram
+ cbyte
, 4);
251 static int search_sortlist(adns_state ads
, struct in_addr ad
) {
252 const struct sortlist
*slp
;
255 for (i
=0, slp
=ads
->sortlist
;
256 i
<ads
->nsortlist
&& !((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
, const void *datap_a
, const void *datap_b
) {
272 const struct in_addr
*ap
= datap_a
, *bp
= datap_b
;
274 return dip_inaddr(ads
,*ap
,*bp
);
277 static adns_status
cs_inaddr(vbuf
*vb
, const void *datap
) {
278 const struct in_addr
*rrp
= datap
, rr
= *rrp
;
281 ia
= inet_ntoa(rr
); assert(ia
);
287 * _addr (pa,di,csp,cs)
290 static adns_status
pa_addr(const parseinfo
*pai
, int cbyte
, int max
, void *datap
) {
291 adns_rr_addr
*storeto
= datap
;
292 const byte
*dgram
= pai
->dgram
;
294 if (max
-cbyte
!= 4) return adns_s_invaliddata
;
295 storeto
->len
= sizeof(storeto
->addr
.inet
);
296 memset(&storeto
->addr
,0,sizeof(storeto
->addr
.inet
));
297 storeto
->addr
.inet
.sin_family
= AF_INET
;
298 memcpy(&storeto
->addr
.inet
.sin_addr
,dgram
+cbyte
,4);
302 static int di_addr(adns_state ads
, const void *datap_a
, const void *datap_b
) {
303 const adns_rr_addr
*ap
= datap_a
, *bp
= datap_b
;
305 assert(ap
->addr
.sa
.sa_family
== AF_INET
);
306 return dip_inaddr(ads
, ap
->addr
.inet
.sin_addr
, bp
->addr
.inet
.sin_addr
);
309 static int div_addr(void *context
, const void *datap_a
, const void *datap_b
) {
310 const adns_state ads
= context
;
312 return di_addr(ads
, datap_a
, datap_b
);
315 static adns_status
csp_addr(vbuf
*vb
, const adns_rr_addr
*rrp
) {
319 switch (rrp
->addr
.inet
.sin_family
) {
321 CSP_ADDSTR("AF_INET ");
322 ia
= inet_ntoa(rrp
->addr
.inet
.sin_addr
); assert(ia
);
326 sprintf(buf
,"AF=%u",rrp
->addr
.sa
.sa_family
);
333 static adns_status
cs_addr(vbuf
*vb
, const void *datap
) {
334 const adns_rr_addr
*rrp
= datap
;
336 return csp_addr(vb
,rrp
);
343 static adns_status
pap_domain(const parseinfo
*pai
, int *cbyte_io
, int max
,
344 char **domain_r
, parsedomain_flags flags
) {
348 st
= adns__parse_domain(pai
->qu
->ads
, pai
->serv
, pai
->qu
, &pai
->qu
->vb
, flags
,
349 pai
->dgram
,pai
->dglen
, cbyte_io
, max
);
351 if (!pai
->qu
->vb
.used
) return adns_s_invaliddata
;
353 dm
= adns__alloc_interim(pai
->qu
, pai
->qu
->vb
.used
+1);
356 dm
[pai
->qu
->vb
.used
]= 0;
357 memcpy(dm
,pai
->qu
->vb
.buf
,pai
->qu
->vb
.used
);
367 static adns_status
pa_host_raw(const parseinfo
*pai
, int cbyte
, int max
, void *datap
) {
371 st
= pap_domain(pai
, &cbyte
, max
, rrp
,
372 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
375 if (cbyte
!= max
) return adns_s_invaliddata
;
380 * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +icb_hostaddr, pap_findaddrs)
383 static adns_status
pap_findaddrs(const parseinfo
*pai
, adns_rr_hostaddr
*ha
,
384 int *cbyte_io
, int count
, int dmstart
) {
386 int type
, class, rdlen
, rdstart
, ownermatched
;
390 for (rri
=0, naddrs
=-1; rri
<count
; rri
++) {
391 st
= adns__findrr_anychk(pai
->qu
, pai
->serv
, pai
->dgram
, pai
->dglen
, cbyte_io
,
392 &type
, &class, &ttl
, &rdlen
, &rdstart
,
393 pai
->dgram
, pai
->dglen
, dmstart
, &ownermatched
);
395 if (!ownermatched
|| class != DNS_CLASS_IN
|| type
!= adns_r_a
) {
396 if (naddrs
>0) break; else continue;
401 if (!adns__vbuf_ensure(&pai
->qu
->vb
, (naddrs
+1)*sizeof(adns_rr_addr
))) R_NOMEM
;
402 adns__update_expires(pai
->qu
,ttl
,pai
->now
);
403 st
= pa_addr(pai
, rdstart
,rdstart
+rdlen
,
404 pai
->qu
->vb
.buf
+ naddrs
*sizeof(adns_rr_addr
));
409 ha
->addrs
= adns__alloc_interim(pai
->qu
, naddrs
*sizeof(adns_rr_addr
));
410 if (!ha
->addrs
) R_NOMEM
;
411 memcpy(ha
->addrs
, pai
->qu
->vb
.buf
, naddrs
*sizeof(adns_rr_addr
));
413 ha
->astatus
= adns_s_ok
;
415 adns__isort(ha
->addrs
, naddrs
, sizeof(adns_rr_addr
), pai
->qu
->vb
.buf
,
421 static void icb_hostaddr(adns_query parent
, adns_query child
) {
422 adns_answer
*cans
= child
->answer
;
423 adns_rr_hostaddr
*rrp
= child
->ctx
.info
.hostaddr
;
424 adns_state ads
= parent
->ads
;
426 rrp
->astatus
= cans
->status
;
427 rrp
->naddrs
= cans
->nrrs
;
428 rrp
->addrs
= cans
->rrs
.addr
;
429 adns__transfer_interim(child
, parent
, rrp
->addrs
, rrp
->naddrs
*sizeof(adns_rr_addr
));
431 if (parent
->children
.head
) {
432 LIST_LINK_TAIL(ads
->childw
,parent
);
434 adns__query_done(parent
);
438 static adns_status
pap_hostaddr(const parseinfo
*pai
, int *cbyte_io
,
439 int max
, adns_rr_hostaddr
*rrp
) {
445 adns_queryflags nflags
;
447 dmstart
= cbyte
= *cbyte_io
;
448 st
= pap_domain(pai
, &cbyte
, max
, &rrp
->host
,
449 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
453 rrp
->astatus
= adns_s_ok
;
459 st
= pap_findaddrs(pai
, rrp
, &cbyte
, pai
->nscount
, dmstart
);
461 if (rrp
->naddrs
!= -1) return adns_s_ok
;
463 st
= pap_findaddrs(pai
, rrp
, &cbyte
, pai
->arcount
, dmstart
);
465 if (rrp
->naddrs
!= -1) return adns_s_ok
;
467 st
= adns__mkquery_frdgram(pai
->ads
, &pai
->qu
->vb
, &id
,
468 pai
->dgram
, pai
->dglen
, dmstart
,
469 adns_r_addr
, adns_qf_quoteok_query
);
473 ctx
.callback
= icb_hostaddr
;
474 ctx
.info
.hostaddr
= rrp
;
476 nflags
= adns_qf_quoteok_query
;
477 if (!(pai
->qu
->flags
& adns_qf_cname_loose
)) nflags
|= adns_qf_cname_forbid
;
479 st
= adns__internal_submit(pai
->ads
, &nqu
, adns__findtype(adns_r_addr
),
480 &pai
->qu
->vb
, id
, nflags
, pai
->now
, &ctx
);
483 nqu
->parent
= pai
->qu
;
484 LIST_LINK_TAIL_PART(pai
->qu
->children
,nqu
,siblings
.);
489 static adns_status
pa_hostaddr(const parseinfo
*pai
, int cbyte
, int max
, void *datap
) {
490 adns_rr_hostaddr
*rrp
= datap
;
493 st
= pap_hostaddr(pai
, &cbyte
, max
, rrp
);
495 if (cbyte
!= max
) return adns_s_invaliddata
;
500 static int dip_hostaddr(adns_state ads
, const adns_rr_hostaddr
*ap
, const adns_rr_hostaddr
*bp
) {
501 if (ap
->astatus
!= bp
->astatus
) return ap
->astatus
;
502 if (ap
->astatus
) return 0;
504 assert(ap
->addrs
[0].addr
.sa
.sa_family
== AF_INET
);
505 assert(bp
->addrs
[0].addr
.sa
.sa_family
== AF_INET
);
506 return dip_inaddr(ads
,
507 ap
->addrs
[0].addr
.inet
.sin_addr
,
508 bp
->addrs
[0].addr
.inet
.sin_addr
);
511 static int di_hostaddr(adns_state ads
, const void *datap_a
, const void *datap_b
) {
512 const adns_rr_hostaddr
*ap
= datap_a
, *bp
= datap_b
;
514 return dip_hostaddr(ads
, ap
,bp
);
517 static void mfp_hostaddr(adns_query qu
, adns_rr_hostaddr
*rrp
) {
520 adns__makefinal_str(qu
,&rrp
->host
);
522 adns__makefinal_block(qu
, &tablev
, rrp
->naddrs
*sizeof(*rrp
->addrs
));
526 static void mf_hostaddr(adns_query qu
, void *datap
) {
527 adns_rr_hostaddr
*rrp
= datap
;
529 mfp_hostaddr(qu
,rrp
);
532 static adns_status
csp_hostaddr(vbuf
*vb
, const adns_rr_hostaddr
*rrp
) {
537 st
= csp_qstring(vb
,rrp
->host
); if (st
) return st
;
541 CSP_ADDSTR(adns_strerror(rrp
->astatus
));
543 assert(rrp
->naddrs
> 0);
544 for (i
=0, to_add
= ": "; i
<rrp
->naddrs
; i
++, to_add
= ", ") {
546 st
= csp_addr(vb
,&rrp
->addrs
[i
]);
552 static adns_status
cs_hostaddr(vbuf
*vb
, const void *datap
) {
553 const adns_rr_hostaddr
*rrp
= datap
;
555 return csp_hostaddr(vb
,rrp
);
562 static adns_status
pa_mx_raw(const parseinfo
*pai
, int cbyte
, int max
, void *datap
) {
563 const byte
*dgram
= pai
->dgram
;
564 adns_rr_intstr
*rrp
= datap
;
568 if (cbyte
+2 > max
) return adns_s_invaliddata
;
571 st
= pap_domain(pai
, &cbyte
, max
, &rrp
->str
,
572 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
575 if (cbyte
!= max
) return adns_s_invaliddata
;
579 static int di_mx_raw(adns_state ads
, const void *datap_a
, const void *datap_b
) {
580 const adns_rr_intstr
*ap
= datap_a
, *bp
= datap_b
;
582 if (ap
->i
< bp
->i
) return 0;
583 if (ap
->i
> bp
->i
) return 1;
591 static adns_status
pa_mx(const parseinfo
*pai
, int cbyte
, int max
, void *datap
) {
592 const byte
*dgram
= pai
->dgram
;
593 adns_rr_inthostaddr
*rrp
= datap
;
597 if (cbyte
+2 > max
) return adns_s_invaliddata
;
600 st
= pap_hostaddr(pai
, &cbyte
, max
, &rrp
->ha
);
603 if (cbyte
!= max
) return adns_s_invaliddata
;
607 static int di_mx(adns_state ads
, const void *datap_a
, const void *datap_b
) {
608 const adns_rr_inthostaddr
*ap
= datap_a
, *bp
= datap_b
;
610 if (ap
->i
< bp
->i
) return 0;
611 if (ap
->i
> bp
->i
) return 1;
612 return dip_hostaddr(ads
, &ap
->ha
, &bp
->ha
);
616 * _inthostaddr (mf,cs)
619 static void mf_inthostaddr(adns_query qu
, void *datap
) {
620 adns_rr_inthostaddr
*rrp
= datap
;
622 mfp_hostaddr(qu
,&rrp
->ha
);
625 static adns_status
cs_inthostaddr(vbuf
*vb
, const void *datap
) {
626 const adns_rr_inthostaddr
*rrp
= datap
;
629 sprintf(buf
,"%u ",rrp
->i
);
632 return csp_hostaddr(vb
,&rrp
->ha
);
636 * _ptr (pa, +icb_ptr)
639 static void icb_ptr(adns_query parent
, adns_query child
) {
640 adns_answer
*cans
= child
->answer
;
641 const adns_rr_addr
*queried
, *found
;
642 adns_state ads
= parent
->ads
;
645 if (cans
->status
== adns_s_nxdomain
|| cans
->status
== adns_s_nodata
) {
646 adns__query_fail(parent
,adns_s_inconsistent
);
648 } else if (cans
->status
) {
649 adns__query_fail(parent
,cans
->status
);
653 queried
= &parent
->ctx
.info
.ptr_parent_addr
;
654 for (i
=0, found
=cans
->rrs
.addr
; i
<cans
->nrrs
; i
++, found
++) {
655 if (queried
->len
== found
->len
&&
656 !memcmp(&queried
->addr
,&found
->addr
,queried
->len
)) {
657 if (!parent
->children
.head
) {
658 adns__query_done(parent
);
661 LIST_LINK_TAIL(ads
->childw
,parent
);
667 adns__query_fail(parent
,adns_s_inconsistent
);
670 static adns_status
pa_ptr(const parseinfo
*pai
, int dmstart
, int max
, void *datap
) {
671 static const char *(expectdomain
[])= { DNS_INADDR_ARPA
};
680 int cbyte
, i
, lablen
, labstart
, l
, id
;
685 st
= pap_domain(pai
, &cbyte
, max
, rrp
,
686 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
688 if (cbyte
!= max
) return adns_s_invaliddata
;
690 ap
= &pai
->qu
->ctx
.info
.ptr_parent_addr
;
692 adns__findlabel_start(&fls
, pai
->ads
, -1, pai
->qu
,
693 pai
->qu
->query_dgram
, pai
->qu
->query_dglen
,
694 pai
->qu
->query_dglen
, DNS_HDRSIZE
, 0);
695 for (i
=0; i
<4; i
++) {
696 st
= adns__findlabel_next(&fls
,&lablen
,&labstart
); assert(!st
);
697 if (lablen
<=0 || lablen
>3) return adns_s_querydomainwrong
;
698 memcpy(labbuf
, pai
->qu
->query_dgram
+ labstart
, lablen
); labbuf
[lablen
]= 0;
699 ipv
[3-i
]= strtoul(labbuf
,&ep
,10); if (*ep
) return adns_s_querydomainwrong
;
700 if (lablen
>1 && pai
->qu
->query_dgram
[labstart
]=='0')
701 return adns_s_querydomainwrong
;
703 for (i
=0; i
<sizeof(expectdomain
)/sizeof(*expectdomain
); i
++) {
704 st
= adns__findlabel_next(&fls
,&lablen
,&labstart
); assert(!st
);
705 l
= strlen(expectdomain
[i
]);
706 if (lablen
!= l
|| memcmp(pai
->qu
->query_dgram
+ labstart
, expectdomain
[i
], l
))
707 return adns_s_querydomainwrong
;
709 st
= adns__findlabel_next(&fls
,&lablen
,0); assert(!st
);
710 if (lablen
) return adns_s_querydomainwrong
;
712 ap
->len
= sizeof(struct sockaddr_in
);
713 memset(&ap
->addr
,0,sizeof(ap
->addr
.inet
));
714 ap
->addr
.inet
.sin_family
= AF_INET
;
715 ap
->addr
.inet
.sin_addr
.s_addr
=
716 htonl((ipv
[0]<<24) | (ipv
[1]<<16) | (ipv
[2]<<8) | (ipv
[3]));
719 st
= adns__mkquery_frdgram(pai
->ads
, &pai
->qu
->vb
, &id
,
720 pai
->dgram
, pai
->dglen
, dmstart
,
721 adns_r_addr
, adns_qf_quoteok_query
);
725 ctx
.callback
= icb_ptr
;
726 memset(&ctx
.info
,0,sizeof(ctx
.info
));
727 st
= adns__internal_submit(pai
->ads
, &nqu
, adns__findtype(adns_r_addr
),
729 adns_qf_quoteok_query
, pai
->now
, &ctx
);
732 nqu
->parent
= pai
->qu
;
733 LIST_LINK_TAIL_PART(pai
->qu
->children
,nqu
,siblings
.);
741 static void mf_strpair(adns_query qu
, void *datap
) {
742 adns_rr_strpair
*rrp
= datap
;
744 adns__makefinal_str(qu
,&rrp
->array
[0]);
745 adns__makefinal_str(qu
,&rrp
->array
[1]);
748 static adns_status
cs_strpair(vbuf
*vb
, const void *datap
) {
749 const adns_rr_strpair
*rrp
= datap
;
752 st
= csp_qstring(vb
,rrp
->array
[0]); if (st
) return st
;
754 st
= csp_qstring(vb
,rrp
->array
[1]); if (st
) return st
;
760 * _intstrpair (mf,cs)
763 static void mf_intstrpair(adns_query qu
, void *datap
) {
764 adns_rr_intstrpair
*rrp
= datap
;
766 adns__makefinal_str(qu
,&rrp
->array
[0].str
);
767 adns__makefinal_str(qu
,&rrp
->array
[1].str
);
770 static adns_status
cs_intstrpair(vbuf
*vb
, const void *datap
) {
771 const adns_rr_intstrpair
*rrp
= datap
;
774 st
= csp_intstr(vb
,&rrp
->array
[0]); if (st
) return st
;
776 st
= csp_intstr(vb
,&rrp
->array
[1]); if (st
) return st
;
785 static adns_status
pa_hinfo(const parseinfo
*pai
, int cbyte
, int max
, void *datap
) {
786 adns_rr_intstrpair
*rrp
= datap
;
790 for (i
=0; i
<2; i
++) {
791 st
= pap_string(pai
, &cbyte
, max
, &rrp
->array
[i
].i
, &rrp
->array
[i
].str
);
795 if (cbyte
!= max
) return adns_s_invaliddata
;
804 static adns_status
pap_mailbox822(const parseinfo
*pai
, int *cbyte_io
, int max
,
806 int lablen
, labstart
, i
, needquote
, c
, r
, neednorm
;
807 const unsigned char *p
;
815 adns__findlabel_start(&fls
, pai
->ads
,
817 pai
->dgram
, pai
->dglen
, max
,
818 *cbyte_io
, cbyte_io
);
819 st
= adns__findlabel_next(&fls
,&lablen
,&labstart
);
821 adns__vbuf_appendstr(vb
,"<>");
826 for (i
=0, needquote
=0, p
= pai
->dgram
+labstart
; i
<lablen
; i
++) {
828 if ((c
&~128) < 32 || (c
&~128) == 127) return adns_s_invaliddata
;
829 if (c
== '.' && !neednorm
) neednorm
= 1;
830 else if (strchr("()<>@,;:\\\".[]",c
)) needquote
++;
834 if (needquote
|| neednorm
) {
835 r
= adns__vbuf_ensure(vb
, lablen
+needquote
+4); if (!r
) R_NOMEM
;
836 adns__vbuf_appendq(vb
,"\"",1);
837 for (i
=0, needquote
=0, p
= pai
->dgram
+labstart
; i
<lablen
; i
++, p
++) {
839 if (strchr("()<>@,;:\\\".[]",c
)) adns__vbuf_appendq(vb
,"\\",1);
840 adns__vbuf_appendq(vb
,p
,1);
842 adns__vbuf_appendq(vb
,"\"",1);
844 r
= adns__vbuf_append(vb
, pai
->dgram
+labstart
, lablen
); if (!r
) R_NOMEM
;
847 r
= adns__vbuf_appendstr(vb
,"@"); if (!r
) R_NOMEM
;
849 st
= adns__parse_domain_more(&fls
,pai
->ads
, pai
->qu
,vb
,0, pai
->dgram
);
853 str
= adns__alloc_interim(pai
->qu
, vb
->used
+1); if (!str
) R_NOMEM
;
854 memcpy(str
,vb
->buf
,vb
->used
);
860 static adns_status
pap_mailbox(const parseinfo
*pai
, int *cbyte_io
, int max
,
862 if (pai
->qu
->typei
->type
& adns__qtf_mail822
) {
863 return pap_mailbox822(pai
, cbyte_io
, max
, mb_r
);
865 return pap_domain(pai
, cbyte_io
, max
, mb_r
,
866 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
874 static adns_status
pa_rp(const parseinfo
*pai
, int cbyte
, int max
, void *datap
) {
875 adns_rr_strpair
*rrp
= datap
;
878 st
= pap_mailbox(pai
, &cbyte
, max
, &rrp
->array
[0]);
881 st
= pap_domain(pai
, &cbyte
, max
, &rrp
->array
[1], pdf_quoteok
);
884 if (cbyte
!= max
) return adns_s_invaliddata
;
892 static adns_status
pa_soa(const parseinfo
*pai
, int cbyte
, int max
, void *datap
) {
893 adns_rr_soa
*rrp
= datap
;
894 const byte
*dgram
= pai
->dgram
;
898 st
= pap_domain(pai
, &cbyte
, max
, &rrp
->mname
,
899 pai
->qu
->flags
& adns_qf_quoteok_anshost ? pdf_quoteok
: 0);
902 st
= pap_mailbox(pai
, &cbyte
, max
, &rrp
->rname
);
905 if (cbyte
+20 != max
) return adns_s_invaliddata
;
907 for (i
=0; i
<5; i
++) {
910 (&rrp
->serial
)[i
]= (msw
<<16) | lsw
;
916 static void mf_soa(adns_query qu
, void *datap
) {
917 adns_rr_soa
*rrp
= datap
;
919 adns__makefinal_str(qu
,&rrp
->mname
);
920 adns__makefinal_str(qu
,&rrp
->rname
);
923 static adns_status
cs_soa(vbuf
*vb
, const void *datap
) {
924 const adns_rr_soa
*rrp
= datap
;
929 st
= csp_qstring(vb
,rrp
->mname
); if (st
) return st
;
931 st
= csp_qstring(vb
,rrp
->rname
); if (st
) return st
;
933 for (i
=0; i
<5; i
++) {
934 sprintf(buf
," %lu",(&rrp
->serial
)[i
]);
945 static void mf_flat(adns_query qu
, void *data
) { }
951 #define TYPESZ_M(member) (sizeof(*((adns_answer*)0)->rrs.member))
953 #define DEEP_MEMB(memb) TYPESZ_M(memb), mf_##memb, cs_##memb
954 #define FLAT_MEMB(memb) TYPESZ_M(memb), mf_flat, cs_##memb
956 #define DEEP_TYPE(code,rrt,fmt,memb,parser,comparer) \
957 { adns_r_##code, rrt, fmt, TYPESZ_M(memb), mf_##memb, cs_##memb, parser, comparer }
958 #define FLAT_TYPE(code,rrt,fmt,memb,parser,comparer) \
959 { adns_r_##code, rrt, fmt, TYPESZ_M(memb), mf_flat, cs_##memb, parser, comparer }
961 static const typeinfo typeinfos
[] = {
962 /* Must be in ascending order of rrtype ! */
963 /* mem-mgmt code rrt fmt member parser comparer */
965 FLAT_TYPE(a
, "A", 0, inaddr
, pa_inaddr
, di_inaddr
),
966 DEEP_TYPE(ns_raw
, "NS", "raw", str
, pa_host_raw
, 0 ),
967 DEEP_TYPE(cname
, "CNAME", 0, str
, pa_host_raw
, 0 ),
968 DEEP_TYPE(soa_raw
, "SOA", "raw", soa
, pa_soa
, 0 ),
969 DEEP_TYPE(ptr_raw
, "PTR", "raw", str
, pa_host_raw
, 0 ),
970 DEEP_TYPE(hinfo
, "HINFO", 0, intstrpair
, pa_hinfo
, 0 ),
971 DEEP_TYPE(mx_raw
, "MX", "raw", intstr
, pa_mx_raw
, di_mx_raw
),
972 DEEP_TYPE(txt
, "TXT", 0, manyistr
, pa_txt
, 0 ),
973 DEEP_TYPE(rp_raw
, "RP", "raw", strpair
, pa_rp
, 0 ),
975 FLAT_TYPE(addr
, "A", "addr", addr
, pa_addr
, di_addr
),
976 DEEP_TYPE(ns
, "NS", "+addr", hostaddr
, pa_hostaddr
, di_hostaddr
),
977 DEEP_TYPE(ptr
, "PTR","checked", str
, pa_ptr
, 0 ),
978 DEEP_TYPE(mx
, "MX", "+addr", inthostaddr
, pa_mx
, di_mx
),
980 DEEP_TYPE(soa
, "SOA","822", soa
, pa_soa
, 0 ),
981 DEEP_TYPE(rp
, "RP", "822", strpair
, pa_rp
, 0 ),
984 const typeinfo
*adns__findtype(adns_rrtype type
) {
985 const typeinfo
*begin
, *end
, *mid
;
987 begin
= typeinfos
; end
= typeinfos
+(sizeof(typeinfos
)/sizeof(typeinfo
));
989 while (begin
< end
) {
990 mid
= begin
+ ((end
-begin
)>>1);
991 if (mid
->type
== type
) return mid
;
992 if (type
> mid
->type
) begin
= mid
+1;