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) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
11 * Copyright (C) 1999 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 { if (!adns__vbuf_appendstr(vb,(s))) R_NOMEM; } while (0)
44 * _textdata, _qstring (csp)
50 * _addr (pa,di,csp,cs)
53 * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +pap_findaddrs)
56 * _inthostaddr (mf,cs)
61 * _mailbox (pap +pap_mailbox822)
66 * within each section:
81 static adns_status pap_qstring(const parseinfo *pai, int *cbyte_io, int max,
82 int *len_r, char **str_r) {
83 /* Neither len_r nor str_r may be null.
84 * End of datagram (overrun) is indicated by returning adns_s_invaliddata;
86 const byte *dgram= pai->dgram;
92 if (cbyte >= max) return adns_s_invaliddata;
94 if (cbyte+l > max) return adns_s_invaliddata;
96 str= adns__alloc_interim(pai->qu, l+1);
100 memcpy(str,dgram+cbyte,l);
109 static adns_status csp_qstring(vbuf *vb, const char *dp, int len) {
115 for (cn=0; cn<len; cn++) {
119 } else if (ch == '"') {
121 } else if (ch >= 32 && ch <= 126) {
122 if (!adns__vbuf_append(vb,&ch,1)) R_NOMEM;
124 sprintf(buf,"\\x%02x",ch);
137 static void mf_str(adns_query qu, void *datap) {
140 adns__makefinal_str(qu,rrp);
147 static void mf_intstr(adns_query qu, void *datap) {
148 adns_rr_intstr *rrp= datap;
150 adns__makefinal_str(qu,&rrp->str);
157 static void mf_manyistr(adns_query qu, void *datap) {
158 adns_rr_intstr **rrp= datap;
159 adns_rr_intstr *te, *table;
163 for (tc=0, te= *rrp; te->i >= 0; te++, tc++);
165 adns__makefinal_block(qu,&tablev,sizeof(*te)*(tc+1));
167 for (te= *rrp; te->i >= 0; te++)
168 adns__makefinal_str(qu,&te->str);
175 static adns_status pa_txt(const parseinfo *pai, int cbyte, int max, void *datap) {
176 adns_rr_intstr **rrp= datap, *table, *te;
177 const byte *dgram= pai->dgram;
178 int ti, tc, l, startbyte;
182 if (cbyte >= max) return adns_s_invaliddata;
184 while (cbyte < max) {
189 if (cbyte != max || !tc) return adns_s_invaliddata;
191 table= adns__alloc_interim(pai->qu,sizeof(*table)*(tc+1));
194 for (cbyte=startbyte, ti=0, te=table; ti<tc; ti++, te++) {
195 st= pap_qstring(pai, &cbyte, max, &te->i, &te->str);
198 assert(cbyte == max);
207 static adns_status cs_txt(vbuf *vb, const void *datap) {
208 const adns_rr_intstr *const *rrp= datap;
209 const adns_rr_intstr *current;
213 for (current= *rrp, spc=0; current->i >= 0; current++, spc=1) {
214 if (spc) CSP_ADDSTR(" ");
215 st= csp_qstring(vb,current->str,current->i); if (st) return st;
224 static adns_status cs_hinfo(vbuf *vb, const void *datap) {
225 const adns_rr_intstrpair *rrp= datap;
228 st= csp_qstring(vb,rrp->array[0].str,rrp->array[0].i); if (st) return st;
230 st= csp_qstring(vb,rrp->array[1].str,rrp->array[1].i); if (st) return st;
235 * _inaddr (pa,dip,di)
238 static adns_status pa_inaddr(const parseinfo *pai, int cbyte, int max, void *datap) {
239 struct in_addr *storeto= datap;
241 if (max-cbyte != 4) return adns_s_invaliddata;
242 memcpy(storeto, pai->dgram + cbyte, 4);
246 static int search_sortlist(adns_state ads, struct in_addr ad) {
247 const struct sortlist *slp;
250 for (i=0, slp=ads->sortlist;
251 i<ads->nsortlist && !((ad.s_addr & slp->mask.s_addr) == slp->base.s_addr);
256 static int dip_inaddr(adns_state ads, struct in_addr a, struct in_addr b) {
259 if (!ads->nsortlist) return 0;
261 ai= search_sortlist(ads,a);
262 bi= search_sortlist(ads,b);
266 static int di_inaddr(adns_state ads, const void *datap_a, const void *datap_b) {
267 const struct in_addr *ap= datap_a, *bp= datap_b;
269 return dip_inaddr(ads,*ap,*bp);
272 static adns_status cs_inaddr(vbuf *vb, const void *datap) {
273 const struct in_addr *rrp= datap, rr= *rrp;
276 ia= inet_ntoa(rr); assert(ia);
282 * _addr (pa,di,csp,cs)
285 static adns_status pa_addr(const parseinfo *pai, int cbyte, int max, void *datap) {
286 adns_rr_addr *storeto= datap;
287 const byte *dgram= pai->dgram;
289 if (max-cbyte != 4) return adns_s_invaliddata;
290 storeto->len= sizeof(storeto->addr.inet);
291 memset(&storeto->addr,0,sizeof(storeto->addr.inet));
292 storeto->addr.inet.sin_family= AF_INET;
293 memcpy(&storeto->addr.inet.sin_addr,dgram+cbyte,4);
297 static int di_addr(adns_state ads, const void *datap_a, const void *datap_b) {
298 const adns_rr_addr *ap= datap_a, *bp= datap_b;
300 assert(ap->addr.sa.sa_family == AF_INET);
301 return dip_inaddr(ads, ap->addr.inet.sin_addr, bp->addr.inet.sin_addr);
304 static int div_addr(void *context, const void *datap_a, const void *datap_b) {
305 const adns_state ads= context;
307 return di_addr(ads, datap_a, datap_b);
310 static adns_status csp_addr(vbuf *vb, const adns_rr_addr *rrp) {
314 switch (rrp->addr.inet.sin_family) {
317 ia= inet_ntoa(rrp->addr.inet.sin_addr); assert(ia);
321 sprintf(buf,"AF=%u",rrp->addr.sa.sa_family);
328 static adns_status cs_addr(vbuf *vb, const void *datap) {
329 const adns_rr_addr *rrp= datap;
331 return csp_addr(vb,rrp);
335 * _domain (pap,csp,cs)
339 static adns_status pap_domain(const parseinfo *pai, int *cbyte_io, int max,
340 char **domain_r, parsedomain_flags flags) {
344 st= adns__parse_domain(pai->qu->ads, pai->serv, pai->qu, &pai->qu->vb, flags,
345 pai->dgram,pai->dglen, cbyte_io, max);
347 if (!pai->qu->vb.used) return adns_s_invaliddata;
349 dm= adns__alloc_interim(pai->qu, pai->qu->vb.used+1);
352 dm[pai->qu->vb.used]= 0;
353 memcpy(dm,pai->qu->vb.buf,pai->qu->vb.used);
359 static adns_status csp_domain(vbuf *vb, const char *domain) {
361 if (!*domain) CSP_ADDSTR(".");
365 static adns_status cs_domain(vbuf *vb, const void *datap) {
366 const char *const *domainp= datap;
367 return csp_domain(vb,*domainp);
370 static adns_status pa_dom_raw(const parseinfo *pai, int cbyte, int max, void *datap) {
374 st= pap_domain(pai, &cbyte, max, rrp, pdf_quoteok);
377 if (cbyte != max) return adns_s_invaliddata;
385 static adns_status pa_host_raw(const parseinfo *pai, int cbyte, int max, void *datap) {
389 st= pap_domain(pai, &cbyte, max, rrp,
390 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
393 if (cbyte != max) return adns_s_invaliddata;
398 * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +icb_hostaddr, pap_findaddrs)
401 static adns_status pap_findaddrs(const parseinfo *pai, adns_rr_hostaddr *ha,
402 int *cbyte_io, int count, int dmstart) {
404 int type, class, rdlen, rdstart, ownermatched;
408 for (rri=0, naddrs=-1; rri<count; rri++) {
409 st= adns__findrr_anychk(pai->qu, pai->serv, pai->dgram, pai->dglen, cbyte_io,
410 &type, &class, &ttl, &rdlen, &rdstart,
411 pai->dgram, pai->dglen, dmstart, &ownermatched);
413 if (!ownermatched || class != DNS_CLASS_IN || type != adns_r_a) {
414 if (naddrs>0) break; else continue;
419 if (!adns__vbuf_ensure(&pai->qu->vb, (naddrs+1)*sizeof(adns_rr_addr))) R_NOMEM;
420 adns__update_expires(pai->qu,ttl,pai->now);
421 st= pa_addr(pai, rdstart,rdstart+rdlen,
422 pai->qu->vb.buf + naddrs*sizeof(adns_rr_addr));
427 ha->addrs= adns__alloc_interim(pai->qu, naddrs*sizeof(adns_rr_addr));
428 if (!ha->addrs) R_NOMEM;
429 memcpy(ha->addrs, pai->qu->vb.buf, naddrs*sizeof(adns_rr_addr));
431 ha->astatus= adns_s_ok;
433 adns__isort(ha->addrs, naddrs, sizeof(adns_rr_addr), pai->qu->vb.buf,
439 static void icb_hostaddr(adns_query parent, adns_query child) {
440 adns_answer *cans= child->answer;
441 adns_rr_hostaddr *rrp= child->ctx.info.hostaddr;
442 adns_state ads= parent->ads;
447 rrp->naddrs= (st>0 && st<=adns_s_max_tempfail) ? -1 : cans->nrrs;
448 rrp->addrs= cans->rrs.addr;
449 adns__transfer_interim(child, parent, rrp->addrs, rrp->naddrs*sizeof(adns_rr_addr));
451 if (parent->children.head) {
452 LIST_LINK_TAIL(ads->childw,parent);
454 adns__query_done(parent);
458 static adns_status pap_hostaddr(const parseinfo *pai, int *cbyte_io,
459 int max, adns_rr_hostaddr *rrp) {
465 adns_queryflags nflags;
467 dmstart= cbyte= *cbyte_io;
468 st= pap_domain(pai, &cbyte, max, &rrp->host,
469 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
473 rrp->astatus= adns_s_ok;
479 st= pap_findaddrs(pai, rrp, &cbyte, pai->nscount, dmstart);
481 if (rrp->naddrs != -1) return adns_s_ok;
483 st= pap_findaddrs(pai, rrp, &cbyte, pai->arcount, dmstart);
485 if (rrp->naddrs != -1) return adns_s_ok;
487 st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id,
488 pai->dgram, pai->dglen, dmstart,
489 adns_r_addr, adns_qf_quoteok_query);
493 ctx.callback= icb_hostaddr;
494 ctx.info.hostaddr= rrp;
496 nflags= adns_qf_quoteok_query;
497 if (!(pai->qu->flags & adns_qf_cname_loose)) nflags |= adns_qf_cname_forbid;
499 st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr),
500 &pai->qu->vb, id, nflags, pai->now, &ctx);
503 nqu->parent= pai->qu;
504 LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.);
509 static adns_status pa_hostaddr(const parseinfo *pai, int cbyte, int max, void *datap) {
510 adns_rr_hostaddr *rrp= datap;
513 st= pap_hostaddr(pai, &cbyte, max, rrp);
515 if (cbyte != max) return adns_s_invaliddata;
520 static int dip_hostaddr(adns_state ads, const adns_rr_hostaddr *ap, const adns_rr_hostaddr *bp) {
521 if (ap->astatus != bp->astatus) return ap->astatus;
522 if (ap->astatus) return 0;
524 assert(ap->addrs[0].addr.sa.sa_family == AF_INET);
525 assert(bp->addrs[0].addr.sa.sa_family == AF_INET);
526 return dip_inaddr(ads,
527 ap->addrs[0].addr.inet.sin_addr,
528 bp->addrs[0].addr.inet.sin_addr);
531 static int di_hostaddr(adns_state ads, const void *datap_a, const void *datap_b) {
532 const adns_rr_hostaddr *ap= datap_a, *bp= datap_b;
534 return dip_hostaddr(ads, ap,bp);
537 static void mfp_hostaddr(adns_query qu, adns_rr_hostaddr *rrp) {
540 adns__makefinal_str(qu,&rrp->host);
542 adns__makefinal_block(qu, &tablev, rrp->naddrs*sizeof(*rrp->addrs));
546 static void mf_hostaddr(adns_query qu, void *datap) {
547 adns_rr_hostaddr *rrp= datap;
549 mfp_hostaddr(qu,rrp);
552 static adns_status csp_hostaddr(vbuf *vb, const adns_rr_hostaddr *rrp) {
557 st= csp_domain(vb,rrp->host); if (st) return st;
560 CSP_ADDSTR(adns_errabbrev(rrp->astatus));
563 errstr= adns_strerror(rrp->astatus);
564 st= csp_qstring(vb,errstr,strlen(errstr)); if (st) return st;
566 if (rrp->naddrs >= 0) {
568 for (i=0; i<rrp->naddrs; i++) {
570 st= csp_addr(vb,&rrp->addrs[i]);
579 static adns_status cs_hostaddr(vbuf *vb, const void *datap) {
580 const adns_rr_hostaddr *rrp= datap;
582 return csp_hostaddr(vb,rrp);
589 static adns_status pa_mx_raw(const parseinfo *pai, int cbyte, int max, void *datap) {
590 const byte *dgram= pai->dgram;
591 adns_rr_intstr *rrp= datap;
595 if (cbyte+2 > max) return adns_s_invaliddata;
598 st= pap_domain(pai, &cbyte, max, &rrp->str,
599 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
602 if (cbyte != max) return adns_s_invaliddata;
606 static int di_mx_raw(adns_state ads, const void *datap_a, const void *datap_b) {
607 const adns_rr_intstr *ap= datap_a, *bp= datap_b;
609 if (ap->i < bp->i) return 0;
610 if (ap->i > bp->i) return 1;
618 static adns_status pa_mx(const parseinfo *pai, int cbyte, int max, void *datap) {
619 const byte *dgram= pai->dgram;
620 adns_rr_inthostaddr *rrp= datap;
624 if (cbyte+2 > max) return adns_s_invaliddata;
627 st= pap_hostaddr(pai, &cbyte, max, &rrp->ha);
630 if (cbyte != max) return adns_s_invaliddata;
634 static int di_mx(adns_state ads, const void *datap_a, const void *datap_b) {
635 const adns_rr_inthostaddr *ap= datap_a, *bp= datap_b;
637 if (ap->i < bp->i) return 0;
638 if (ap->i > bp->i) return 1;
639 return dip_hostaddr(ads, &ap->ha, &bp->ha);
643 * _inthostaddr (mf,cs)
646 static void mf_inthostaddr(adns_query qu, void *datap) {
647 adns_rr_inthostaddr *rrp= datap;
649 mfp_hostaddr(qu,&rrp->ha);
652 static adns_status cs_inthostaddr(vbuf *vb, const void *datap) {
653 const adns_rr_inthostaddr *rrp= datap;
656 sprintf(buf,"%u ",rrp->i);
659 return csp_hostaddr(vb,&rrp->ha);
666 static adns_status cs_inthost(vbuf *vb, const void *datap) {
667 const adns_rr_intstr *rrp= datap;
670 sprintf(buf,"%u ",rrp->i);
672 return csp_domain(vb,rrp->str);
676 * _ptr (pa, +icb_ptr)
679 static void icb_ptr(adns_query parent, adns_query child) {
680 adns_answer *cans= child->answer;
681 const adns_rr_addr *queried, *found;
682 adns_state ads= parent->ads;
685 if (cans->status == adns_s_nxdomain || cans->status == adns_s_nodata) {
686 adns__query_fail(parent,adns_s_inconsistent);
688 } else if (cans->status) {
689 adns__query_fail(parent,cans->status);
693 queried= &parent->ctx.info.ptr_parent_addr;
694 for (i=0, found=cans->rrs.addr; i<cans->nrrs; i++, found++) {
695 if (queried->len == found->len &&
696 !memcmp(&queried->addr,&found->addr,queried->len)) {
697 if (!parent->children.head) {
698 adns__query_done(parent);
701 LIST_LINK_TAIL(ads->childw,parent);
707 adns__query_fail(parent,adns_s_inconsistent);
710 static adns_status pa_ptr(const parseinfo *pai, int dmstart, int max, void *datap) {
711 static const char *(expectdomain[])= { DNS_INADDR_ARPA };
720 int cbyte, i, lablen, labstart, l, id;
725 st= pap_domain(pai, &cbyte, max, rrp,
726 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
728 if (cbyte != max) return adns_s_invaliddata;
730 ap= &pai->qu->ctx.info.ptr_parent_addr;
732 adns__findlabel_start(&fls, pai->ads, -1, pai->qu,
733 pai->qu->query_dgram, pai->qu->query_dglen,
734 pai->qu->query_dglen, DNS_HDRSIZE, 0);
735 for (i=0; i<4; i++) {
736 st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st);
737 if (lablen<=0 || lablen>3) return adns_s_querydomainwrong;
738 memcpy(labbuf, pai->qu->query_dgram + labstart, lablen); labbuf[lablen]= 0;
739 ipv[3-i]= strtoul(labbuf,&ep,10); if (*ep) return adns_s_querydomainwrong;
740 if (lablen>1 && pai->qu->query_dgram[labstart]=='0')
741 return adns_s_querydomainwrong;
743 for (i=0; i<sizeof(expectdomain)/sizeof(*expectdomain); i++) {
744 st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st);
745 l= strlen(expectdomain[i]);
746 if (lablen != l || memcmp(pai->qu->query_dgram + labstart, expectdomain[i], l))
747 return adns_s_querydomainwrong;
749 st= adns__findlabel_next(&fls,&lablen,0); assert(!st);
750 if (lablen) return adns_s_querydomainwrong;
752 ap->len= sizeof(struct sockaddr_in);
753 memset(&ap->addr,0,sizeof(ap->addr.inet));
754 ap->addr.inet.sin_family= AF_INET;
755 ap->addr.inet.sin_addr.s_addr=
756 htonl((ipv[0]<<24) | (ipv[1]<<16) | (ipv[2]<<8) | (ipv[3]));
759 st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id,
760 pai->dgram, pai->dglen, dmstart,
761 adns_r_addr, adns_qf_quoteok_query);
765 ctx.callback= icb_ptr;
766 memset(&ctx.info,0,sizeof(ctx.info));
767 st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr),
769 adns_qf_quoteok_query, pai->now, &ctx);
772 nqu->parent= pai->qu;
773 LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.);
781 static void mf_strpair(adns_query qu, void *datap) {
782 adns_rr_strpair *rrp= datap;
784 adns__makefinal_str(qu,&rrp->array[0]);
785 adns__makefinal_str(qu,&rrp->array[1]);
792 static void mf_intstrpair(adns_query qu, void *datap) {
793 adns_rr_intstrpair *rrp= datap;
795 adns__makefinal_str(qu,&rrp->array[0].str);
796 adns__makefinal_str(qu,&rrp->array[1].str);
803 static adns_status pa_hinfo(const parseinfo *pai, int cbyte, int max, void *datap) {
804 adns_rr_intstrpair *rrp= datap;
808 for (i=0; i<2; i++) {
809 st= pap_qstring(pai, &cbyte, max, &rrp->array[i].i, &rrp->array[i].str);
813 if (cbyte != max) return adns_s_invaliddata;
822 static adns_status pap_mailbox822(const parseinfo *pai, int *cbyte_io, int max,
824 int lablen, labstart, i, needquote, c, r, neednorm;
825 const unsigned char *p;
833 adns__findlabel_start(&fls, pai->ads,
835 pai->dgram, pai->dglen, max,
836 *cbyte_io, cbyte_io);
837 st= adns__findlabel_next(&fls,&lablen,&labstart);
839 adns__vbuf_appendstr(vb,".");
844 for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++) {
846 if ((c&~128) < 32 || (c&~128) == 127) return adns_s_invaliddata;
847 if (c == '.' && !neednorm) neednorm= 1;
848 else if (c==' ' || ctype_822special(c)) needquote++;
852 if (needquote || neednorm) {
853 r= adns__vbuf_ensure(vb, lablen+needquote+4); if (!r) R_NOMEM;
854 adns__vbuf_appendq(vb,"\"",1);
855 for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++, p++) {
857 if (c == '"' || c=='\\') adns__vbuf_appendq(vb,"\\",1);
858 adns__vbuf_appendq(vb,p,1);
860 adns__vbuf_appendq(vb,"\"",1);
862 r= adns__vbuf_append(vb, pai->dgram+labstart, lablen); if (!r) R_NOMEM;
865 r= adns__vbuf_appendstr(vb,"@"); if (!r) R_NOMEM;
867 st= adns__parse_domain_more(&fls,pai->ads, pai->qu,vb,0, pai->dgram);
871 str= adns__alloc_interim(pai->qu, vb->used+1); if (!str) R_NOMEM;
872 memcpy(str,vb->buf,vb->used);
878 static adns_status pap_mailbox(const parseinfo *pai, int *cbyte_io, int max,
880 if (pai->qu->typei->type & adns__qtf_mail822) {
881 return pap_mailbox822(pai, cbyte_io, max, mb_r);
883 return pap_domain(pai, cbyte_io, max, mb_r, pdf_quoteok);
887 static adns_status csp_mailbox(vbuf *vb, const char *mailbox) {
888 return csp_domain(vb,mailbox);
895 static adns_status pa_rp(const parseinfo *pai, int cbyte, int max, void *datap) {
896 adns_rr_strpair *rrp= datap;
899 st= pap_mailbox(pai, &cbyte, max, &rrp->array[0]);
902 st= pap_domain(pai, &cbyte, max, &rrp->array[1], pdf_quoteok);
905 if (cbyte != max) return adns_s_invaliddata;
909 static adns_status cs_rp(vbuf *vb, const void *datap) {
910 const adns_rr_strpair *rrp= datap;
913 st= csp_mailbox(vb,rrp->array[0]); if (st) return st;
915 st= csp_domain(vb,rrp->array[1]); if (st) return st;
924 static adns_status pa_soa(const parseinfo *pai, int cbyte, int max, void *datap) {
925 adns_rr_soa *rrp= datap;
926 const byte *dgram= pai->dgram;
930 st= pap_domain(pai, &cbyte, max, &rrp->mname,
931 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
934 st= pap_mailbox(pai, &cbyte, max, &rrp->rname);
937 if (cbyte+20 != max) return adns_s_invaliddata;
939 for (i=0; i<5; i++) {
942 (&rrp->serial)[i]= (msw<<16) | lsw;
948 static void mf_soa(adns_query qu, void *datap) {
949 adns_rr_soa *rrp= datap;
951 adns__makefinal_str(qu,&rrp->mname);
952 adns__makefinal_str(qu,&rrp->rname);
955 static adns_status cs_soa(vbuf *vb, const void *datap) {
956 const adns_rr_soa *rrp= datap;
961 st= csp_domain(vb,rrp->mname); if (st) return st;
963 st= csp_mailbox(vb,rrp->rname); if (st) return st;
965 for (i=0; i<5; i++) {
966 sprintf(buf," %lu",(&rrp->serial)[i]);
977 static void mf_flat(adns_query qu, void *data) { }
983 #define TYPESZ_M(member) (sizeof(*((adns_answer*)0)->rrs.member))
985 #define DEEP_MEMB(memb) TYPESZ_M(memb), mf_##memb, cs_##memb
986 #define FLAT_MEMB(memb) TYPESZ_M(memb), mf_flat, cs_##memb
988 #define DEEP_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \
989 { adns_r_##code, rrt, fmt, TYPESZ_M(memb), mf_##memb, printer, parser, comparer }
990 #define FLAT_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \
991 { adns_r_##code, rrt, fmt, TYPESZ_M(memb), mf_flat, printer, parser, comparer }
993 static const typeinfo typeinfos[] = {
994 /* Must be in ascending order of rrtype ! */
995 /* mem-mgmt code rrt fmt member parser comparer printer */
997 FLAT_TYPE(a, "A", 0, inaddr, pa_inaddr, di_inaddr, cs_inaddr ),
998 DEEP_TYPE(ns_raw, "NS", "raw", str, pa_host_raw,0, cs_domain ),
999 DEEP_TYPE(cname, "CNAME", 0, str, pa_dom_raw, 0, cs_domain ),
1000 DEEP_TYPE(soa_raw,"SOA", "raw", soa, pa_soa, 0, cs_soa ),
1001 DEEP_TYPE(ptr_raw,"PTR", "raw", str, pa_host_raw,0, cs_domain ),
1002 DEEP_TYPE(hinfo, "HINFO", 0, intstrpair, pa_hinfo, 0, cs_hinfo ),
1003 DEEP_TYPE(mx_raw, "MX", "raw", intstr, pa_mx_raw, di_mx_raw, cs_inthost ),
1004 DEEP_TYPE(txt, "TXT", 0, manyistr, pa_txt, 0, cs_txt ),
1005 DEEP_TYPE(rp_raw, "RP", "raw", strpair, pa_rp, 0, cs_rp ),
1007 FLAT_TYPE(addr, "A", "addr", addr, pa_addr, di_addr, cs_addr ),
1008 DEEP_TYPE(ns, "NS", "+addr", hostaddr, pa_hostaddr,di_hostaddr,cs_hostaddr ),
1009 DEEP_TYPE(ptr, "PTR","checked",str, pa_ptr, 0, cs_domain ),
1010 DEEP_TYPE(mx, "MX", "+addr", inthostaddr,pa_mx, di_mx, cs_inthostaddr),
1012 DEEP_TYPE(soa, "SOA","822", soa, pa_soa, 0, cs_soa ),
1013 DEEP_TYPE(rp, "RP", "822", strpair, pa_rp, 0, cs_rp ),
1016 const typeinfo *adns__findtype(adns_rrtype type) {
1017 const typeinfo *begin, *end, *mid;
1019 begin= typeinfos; end= typeinfos+(sizeof(typeinfos)/sizeof(typeinfo));
1021 while (begin < end) {
1022 mid= begin + ((end-begin)>>1);
1023 if (mid->type == type) return mid;
1024 if (type > mid->type) begin= mid+1;