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)
66 * _srv* (qdpl,(pap),pa,mf,di,(csp),cs)
69 * within each section:
85 static adns_status pap_qstring(const parseinfo *pai, int *cbyte_io, int max,
86 int *len_r, char **str_r) {
87 /* Neither len_r nor str_r may be null.
88 * End of datagram (overrun) is indicated by returning adns_s_invaliddata;
90 const byte *dgram= pai->dgram;
96 if (cbyte >= max) return adns_s_invaliddata;
98 if (cbyte+l > max) return adns_s_invaliddata;
100 str= adns__alloc_interim(pai->qu, l+1);
104 memcpy(str,dgram+cbyte,l);
113 static adns_status csp_qstring(vbuf *vb, const char *dp, int len) {
119 for (cn=0; cn<len; cn++) {
123 } else if (ch == '"') {
125 } else if (ch >= 32 && ch <= 126) {
126 if (!adns__vbuf_append(vb,&ch,1)) R_NOMEM;
128 sprintf(buf,"\\x%02x",ch);
141 static void mf_str(adns_query qu, void *datap) {
144 adns__makefinal_str(qu,rrp);
151 static void mf_intstr(adns_query qu, void *datap) {
152 adns_rr_intstr *rrp= datap;
154 adns__makefinal_str(qu,&rrp->str);
161 static void mf_manyistr(adns_query qu, void *datap) {
162 adns_rr_intstr **rrp= datap;
163 adns_rr_intstr *te, *table;
167 for (tc=0, te= *rrp; te->i >= 0; te++, tc++);
169 adns__makefinal_block(qu,&tablev,sizeof(*te)*(tc+1));
171 for (te= *rrp; te->i >= 0; te++)
172 adns__makefinal_str(qu,&te->str);
179 static adns_status pa_txt(const parseinfo *pai, int cbyte,
180 int max, void *datap) {
181 adns_rr_intstr **rrp= datap, *table, *te;
182 const byte *dgram= pai->dgram;
183 int ti, tc, l, startbyte;
187 if (cbyte >= max) return adns_s_invaliddata;
189 while (cbyte < max) {
194 if (cbyte != max || !tc) return adns_s_invaliddata;
196 table= adns__alloc_interim(pai->qu,sizeof(*table)*(tc+1));
199 for (cbyte=startbyte, ti=0, te=table; ti<tc; ti++, te++) {
200 st= pap_qstring(pai, &cbyte, max, &te->i, &te->str);
203 assert(cbyte == max);
212 static adns_status cs_txt(vbuf *vb, const void *datap) {
213 const adns_rr_intstr *const *rrp= datap;
214 const adns_rr_intstr *current;
218 for (current= *rrp, spc=0; current->i >= 0; current++, spc=1) {
219 if (spc) CSP_ADDSTR(" ");
220 st= csp_qstring(vb,current->str,current->i); if (st) return st;
229 static adns_status cs_hinfo(vbuf *vb, const void *datap) {
230 const adns_rr_intstrpair *rrp= datap;
233 st= csp_qstring(vb,rrp->array[0].str,rrp->array[0].i); if (st) return st;
235 st= csp_qstring(vb,rrp->array[1].str,rrp->array[1].i); if (st) return st;
240 * _inaddr (pa,dip,di)
243 static adns_status pa_inaddr(const parseinfo *pai, int cbyte,
244 int max, void *datap) {
245 struct in_addr *storeto= datap;
247 if (max-cbyte != 4) return adns_s_invaliddata;
248 memcpy(storeto, pai->dgram + cbyte, 4);
252 static int search_sortlist(adns_state ads, struct in_addr ad) {
253 const struct sortlist *slp;
256 for (i=0, slp=ads->sortlist;
258 !((ad.s_addr & slp->mask.s_addr) == slp->base.s_addr);
263 static int dip_inaddr(adns_state ads, struct in_addr a, struct in_addr b) {
266 if (!ads->nsortlist) return 0;
268 ai= search_sortlist(ads,a);
269 bi= search_sortlist(ads,b);
273 static int di_inaddr(adns_state ads,
274 const void *datap_a, const void *datap_b) {
275 const struct in_addr *ap= datap_a, *bp= datap_b;
277 return dip_inaddr(ads,*ap,*bp);
280 static adns_status cs_inaddr(vbuf *vb, const void *datap) {
281 const struct in_addr *rrp= datap, rr= *rrp;
284 ia= inet_ntoa(rr); assert(ia);
290 * _addr (pa,di,csp,cs)
293 static adns_status pa_addr(const parseinfo *pai, int cbyte,
294 int max, void *datap) {
295 adns_rr_addr *storeto= datap;
296 const byte *dgram= pai->dgram;
298 if (max-cbyte != 4) return adns_s_invaliddata;
299 storeto->len= sizeof(storeto->addr.inet);
300 memset(&storeto->addr,0,sizeof(storeto->addr.inet));
301 storeto->addr.inet.sin_family= AF_INET;
302 memcpy(&storeto->addr.inet.sin_addr,dgram+cbyte,4);
306 static int di_addr(adns_state ads, const void *datap_a, const void *datap_b) {
307 const adns_rr_addr *ap= datap_a, *bp= datap_b;
309 assert(ap->addr.sa.sa_family == AF_INET);
310 return dip_inaddr(ads, ap->addr.inet.sin_addr, bp->addr.inet.sin_addr);
313 static int div_addr(void *context, const void *datap_a, const void *datap_b) {
314 const adns_state ads= context;
316 return di_addr(ads, datap_a, datap_b);
319 static adns_status csp_addr(vbuf *vb, const adns_rr_addr *rrp) {
323 switch (rrp->addr.inet.sin_family) {
326 ia= inet_ntoa(rrp->addr.inet.sin_addr); assert(ia);
330 sprintf(buf,"AF=%u",rrp->addr.sa.sa_family);
337 static adns_status cs_addr(vbuf *vb, const void *datap) {
338 const adns_rr_addr *rrp= datap;
340 return csp_addr(vb,rrp);
344 * _domain (pap,csp,cs)
348 static adns_status pap_domain(const parseinfo *pai, int *cbyte_io, int max,
349 char **domain_r, parsedomain_flags flags) {
353 st= adns__parse_domain(pai->qu->ads, pai->serv, pai->qu, &pai->qu->vb, flags,
354 pai->dgram,pai->dglen, cbyte_io, max);
356 if (!pai->qu->vb.used) return adns_s_invaliddata;
358 dm= adns__alloc_interim(pai->qu, pai->qu->vb.used+1);
361 dm[pai->qu->vb.used]= 0;
362 memcpy(dm,pai->qu->vb.buf,pai->qu->vb.used);
368 static adns_status csp_domain(vbuf *vb, const char *domain) {
370 if (!*domain) CSP_ADDSTR(".");
374 static adns_status cs_domain(vbuf *vb, const void *datap) {
375 const char *const *domainp= datap;
376 return csp_domain(vb,*domainp);
379 static adns_status pa_dom_raw(const parseinfo *pai, int cbyte,
380 int max, void *datap) {
384 st= pap_domain(pai, &cbyte, max, rrp, pdf_quoteok);
387 if (cbyte != max) return adns_s_invaliddata;
395 static adns_status pa_host_raw(const parseinfo *pai, int cbyte,
396 int max, void *datap) {
400 st= pap_domain(pai, &cbyte, max, rrp,
401 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
404 if (cbyte != max) return adns_s_invaliddata;
409 * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +icb_hostaddr, pap_findaddrs)
412 static adns_status pap_findaddrs(const parseinfo *pai, adns_rr_hostaddr *ha,
413 int *cbyte_io, int count, int dmstart) {
415 int type, class, rdlen, rdstart, ownermatched;
419 for (rri=0, naddrs=-1; rri<count; rri++) {
420 st= adns__findrr_anychk(pai->qu, pai->serv, pai->dgram,
421 pai->dglen, cbyte_io,
422 &type, &class, &ttl, &rdlen, &rdstart,
423 pai->dgram, pai->dglen, dmstart, &ownermatched);
425 if (!ownermatched || class != DNS_CLASS_IN || type != adns_r_a) {
426 if (naddrs>0) break; else continue;
431 if (!adns__vbuf_ensure(&pai->qu->vb, (naddrs+1)*sizeof(adns_rr_addr)))
433 adns__update_expires(pai->qu,ttl,pai->now);
434 st= pa_addr(pai, rdstart,rdstart+rdlen,
435 pai->qu->vb.buf + naddrs*sizeof(adns_rr_addr));
440 ha->addrs= adns__alloc_interim(pai->qu, naddrs*sizeof(adns_rr_addr));
441 if (!ha->addrs) R_NOMEM;
442 memcpy(ha->addrs, pai->qu->vb.buf, naddrs*sizeof(adns_rr_addr));
444 ha->astatus= adns_s_ok;
446 adns__isort(ha->addrs, naddrs, sizeof(adns_rr_addr), pai->qu->vb.buf,
452 static void icb_hostaddr(adns_query parent, adns_query child) {
453 adns_answer *cans= child->answer;
454 adns_rr_hostaddr *rrp= child->ctx.info.hostaddr;
455 adns_state ads= parent->ads;
460 rrp->naddrs= (st>0 && st<=adns_s_max_tempfail) ? -1 : cans->nrrs;
461 rrp->addrs= cans->rrs.addr;
462 adns__transfer_interim(child, parent, rrp->addrs,
463 rrp->naddrs*sizeof(adns_rr_addr));
465 if (parent->children.head) {
466 LIST_LINK_TAIL(ads->childw,parent);
468 adns__query_done(parent);
472 static adns_status pap_hostaddr(const parseinfo *pai, int *cbyte_io,
473 int max, adns_rr_hostaddr *rrp) {
479 adns_queryflags nflags;
481 dmstart= cbyte= *cbyte_io;
482 st= pap_domain(pai, &cbyte, max, &rrp->host,
483 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
487 rrp->astatus= adns_s_ok;
493 st= pap_findaddrs(pai, rrp, &cbyte, pai->nscount, dmstart);
495 if (rrp->naddrs != -1) return adns_s_ok;
497 st= pap_findaddrs(pai, rrp, &cbyte, pai->arcount, dmstart);
499 if (rrp->naddrs != -1) return adns_s_ok;
501 st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id,
502 pai->dgram, pai->dglen, dmstart,
503 adns_r_addr, adns_qf_quoteok_query);
507 ctx.callback= icb_hostaddr;
508 ctx.info.hostaddr= rrp;
510 nflags= adns_qf_quoteok_query;
511 if (!(pai->qu->flags & adns_qf_cname_loose)) nflags |= adns_qf_cname_forbid;
513 st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr),
514 &pai->qu->vb, id, nflags, pai->now, &ctx);
517 nqu->parent= pai->qu;
518 LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.);
523 static adns_status pa_hostaddr(const parseinfo *pai, int cbyte,
524 int max, void *datap) {
525 adns_rr_hostaddr *rrp= datap;
528 st= pap_hostaddr(pai, &cbyte, max, rrp);
530 if (cbyte != max) return adns_s_invaliddata;
535 static int dip_hostaddr(adns_state ads,
536 const adns_rr_hostaddr *ap, const adns_rr_hostaddr *bp) {
537 if (ap->astatus != bp->astatus) return ap->astatus;
538 if (ap->astatus) return 0;
540 assert(ap->addrs[0].addr.sa.sa_family == AF_INET);
541 assert(bp->addrs[0].addr.sa.sa_family == AF_INET);
542 return dip_inaddr(ads,
543 ap->addrs[0].addr.inet.sin_addr,
544 bp->addrs[0].addr.inet.sin_addr);
547 static int di_hostaddr(adns_state ads,
548 const void *datap_a, const void *datap_b) {
549 const adns_rr_hostaddr *ap= datap_a, *bp= datap_b;
551 return dip_hostaddr(ads, ap,bp);
554 static void mfp_hostaddr(adns_query qu, adns_rr_hostaddr *rrp) {
557 adns__makefinal_str(qu,&rrp->host);
559 adns__makefinal_block(qu, &tablev, rrp->naddrs*sizeof(*rrp->addrs));
563 static void mf_hostaddr(adns_query qu, void *datap) {
564 adns_rr_hostaddr *rrp= datap;
566 mfp_hostaddr(qu,rrp);
569 static adns_status csp_hostaddr(vbuf *vb, const adns_rr_hostaddr *rrp) {
575 st= csp_domain(vb,rrp->host); if (st) return st;
578 CSP_ADDSTR(adns_errtypeabbrev(rrp->astatus));
580 sprintf(buf," %d ",rrp->astatus);
583 CSP_ADDSTR(adns_errabbrev(rrp->astatus));
586 errstr= adns_strerror(rrp->astatus);
587 st= csp_qstring(vb,errstr,strlen(errstr)); if (st) return st;
589 if (rrp->naddrs >= 0) {
591 for (i=0; i<rrp->naddrs; i++) {
593 st= csp_addr(vb,&rrp->addrs[i]);
602 static adns_status cs_hostaddr(vbuf *vb, const void *datap) {
603 const adns_rr_hostaddr *rrp= datap;
605 return csp_hostaddr(vb,rrp);
612 static adns_status pa_mx_raw(const parseinfo *pai, int cbyte,
613 int max, void *datap) {
614 const byte *dgram= pai->dgram;
615 adns_rr_intstr *rrp= datap;
619 if (cbyte+2 > max) return adns_s_invaliddata;
622 st= pap_domain(pai, &cbyte, max, &rrp->str,
623 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
626 if (cbyte != max) return adns_s_invaliddata;
630 static int di_mx_raw(adns_state ads, const void *datap_a, const void *datap_b) {
631 const adns_rr_intstr *ap= datap_a, *bp= datap_b;
633 if (ap->i < bp->i) return 0;
634 if (ap->i > bp->i) return 1;
642 static adns_status pa_mx(const parseinfo *pai, int cbyte,
643 int max, void *datap) {
644 const byte *dgram= pai->dgram;
645 adns_rr_inthostaddr *rrp= datap;
649 if (cbyte+2 > max) return adns_s_invaliddata;
652 st= pap_hostaddr(pai, &cbyte, max, &rrp->ha);
655 if (cbyte != max) return adns_s_invaliddata;
659 static int di_mx(adns_state ads, const void *datap_a, const void *datap_b) {
660 const adns_rr_inthostaddr *ap= datap_a, *bp= datap_b;
662 if (ap->i < bp->i) return 0;
663 if (ap->i > bp->i) return 1;
664 return dip_hostaddr(ads, &ap->ha, &bp->ha);
668 * _inthostaddr (mf,cs)
671 static void mf_inthostaddr(adns_query qu, void *datap) {
672 adns_rr_inthostaddr *rrp= datap;
674 mfp_hostaddr(qu,&rrp->ha);
677 static adns_status cs_inthostaddr(vbuf *vb, const void *datap) {
678 const adns_rr_inthostaddr *rrp= datap;
681 sprintf(buf,"%u ",rrp->i);
684 return csp_hostaddr(vb,&rrp->ha);
691 static adns_status cs_inthost(vbuf *vb, const void *datap) {
692 const adns_rr_intstr *rrp= datap;
695 sprintf(buf,"%u ",rrp->i);
697 return csp_domain(vb,rrp->str);
701 * _ptr (pa, +icb_ptr)
704 static void icb_ptr(adns_query parent, adns_query child) {
705 adns_answer *cans= child->answer;
706 const adns_rr_addr *queried, *found;
707 adns_state ads= parent->ads;
710 if (cans->status == adns_s_nxdomain || cans->status == adns_s_nodata) {
711 adns__query_fail(parent,adns_s_inconsistent);
713 } else if (cans->status) {
714 adns__query_fail(parent,cans->status);
718 queried= &parent->ctx.info.ptr_parent_addr;
719 for (i=0, found=cans->rrs.addr; i<cans->nrrs; i++, found++) {
720 if (queried->len == found->len &&
721 !memcmp(&queried->addr,&found->addr,queried->len)) {
722 if (!parent->children.head) {
723 adns__query_done(parent);
726 LIST_LINK_TAIL(ads->childw,parent);
732 adns__query_fail(parent,adns_s_inconsistent);
735 static adns_status pa_ptr(const parseinfo *pai, int dmstart,
736 int max, void *datap) {
737 static const char *(expectdomain[])= { DNS_INADDR_ARPA };
746 int cbyte, i, lablen, labstart, l, id;
751 st= pap_domain(pai, &cbyte, max, rrp,
752 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
754 if (cbyte != max) return adns_s_invaliddata;
756 ap= &pai->qu->ctx.info.ptr_parent_addr;
758 adns__findlabel_start(&fls, pai->ads, -1, pai->qu,
759 pai->qu->query_dgram, pai->qu->query_dglen,
760 pai->qu->query_dglen, DNS_HDRSIZE, 0);
761 for (i=0; i<4; i++) {
762 st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st);
763 if (lablen<=0 || lablen>3) return adns_s_querydomainwrong;
764 memcpy(labbuf, pai->qu->query_dgram + labstart, lablen);
766 ipv[3-i]= strtoul(labbuf,&ep,10);
767 if (*ep) return adns_s_querydomainwrong;
768 if (lablen>1 && pai->qu->query_dgram[labstart]=='0')
769 return adns_s_querydomainwrong;
771 for (i=0; i<sizeof(expectdomain)/sizeof(*expectdomain); i++) {
772 st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st);
773 l= strlen(expectdomain[i]);
775 memcmp(pai->qu->query_dgram + labstart, expectdomain[i], l))
776 return adns_s_querydomainwrong;
778 st= adns__findlabel_next(&fls,&lablen,0); assert(!st);
779 if (lablen) return adns_s_querydomainwrong;
781 ap->len= sizeof(struct sockaddr_in);
782 memset(&ap->addr,0,sizeof(ap->addr.inet));
783 ap->addr.inet.sin_family= AF_INET;
784 ap->addr.inet.sin_addr.s_addr=
785 htonl((ipv[0]<<24) | (ipv[1]<<16) | (ipv[2]<<8) | (ipv[3]));
788 st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id,
789 pai->dgram, pai->dglen, dmstart,
790 adns_r_addr, adns_qf_quoteok_query);
794 ctx.callback= icb_ptr;
795 memset(&ctx.info,0,sizeof(ctx.info));
796 st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr),
798 adns_qf_quoteok_query, pai->now, &ctx);
801 nqu->parent= pai->qu;
802 LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.);
810 static void mf_strpair(adns_query qu, void *datap) {
811 adns_rr_strpair *rrp= datap;
813 adns__makefinal_str(qu,&rrp->array[0]);
814 adns__makefinal_str(qu,&rrp->array[1]);
821 static void mf_intstrpair(adns_query qu, void *datap) {
822 adns_rr_intstrpair *rrp= datap;
824 adns__makefinal_str(qu,&rrp->array[0].str);
825 adns__makefinal_str(qu,&rrp->array[1].str);
832 static adns_status pa_hinfo(const parseinfo *pai, int cbyte,
833 int max, void *datap) {
834 adns_rr_intstrpair *rrp= datap;
838 for (i=0; i<2; i++) {
839 st= pap_qstring(pai, &cbyte, max, &rrp->array[i].i, &rrp->array[i].str);
843 if (cbyte != max) return adns_s_invaliddata;
852 static adns_status pap_mailbox822(const parseinfo *pai,
853 int *cbyte_io, int max, char **mb_r) {
854 int lablen, labstart, i, needquote, c, r, neednorm;
855 const unsigned char *p;
863 adns__findlabel_start(&fls, pai->ads,
865 pai->dgram, pai->dglen, max,
866 *cbyte_io, cbyte_io);
867 st= adns__findlabel_next(&fls,&lablen,&labstart);
869 adns__vbuf_appendstr(vb,".");
874 for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++) {
876 if ((c&~128) < 32 || (c&~128) == 127) return adns_s_invaliddata;
877 if (c == '.' && !neednorm) neednorm= 1;
878 else if (c==' ' || c>=127 || ctype_822special(c)) needquote++;
882 if (needquote || neednorm) {
883 r= adns__vbuf_ensure(vb, lablen+needquote+4); if (!r) R_NOMEM;
884 adns__vbuf_appendq(vb,"\"",1);
885 for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++, p++) {
887 if (c == '"' || c=='\\') adns__vbuf_appendq(vb,"\\",1);
888 adns__vbuf_appendq(vb,p,1);
890 adns__vbuf_appendq(vb,"\"",1);
892 r= adns__vbuf_append(vb, pai->dgram+labstart, lablen); if (!r) R_NOMEM;
895 r= adns__vbuf_appendstr(vb,"@"); if (!r) R_NOMEM;
897 st= adns__parse_domain_more(&fls,pai->ads, pai->qu,vb,0, pai->dgram);
901 str= adns__alloc_interim(pai->qu, vb->used+1); if (!str) R_NOMEM;
902 memcpy(str,vb->buf,vb->used);
908 static adns_status pap_mailbox(const parseinfo *pai, int *cbyte_io, int max,
910 if (pai->qu->typei->type & adns__qtf_mail822) {
911 return pap_mailbox822(pai, cbyte_io, max, mb_r);
913 return pap_domain(pai, cbyte_io, max, mb_r, pdf_quoteok);
917 static adns_status csp_mailbox(vbuf *vb, const char *mailbox) {
918 return csp_domain(vb,mailbox);
925 static adns_status pa_rp(const parseinfo *pai, int cbyte,
926 int max, void *datap) {
927 adns_rr_strpair *rrp= datap;
930 st= pap_mailbox(pai, &cbyte, max, &rrp->array[0]);
933 st= pap_domain(pai, &cbyte, max, &rrp->array[1], pdf_quoteok);
936 if (cbyte != max) return adns_s_invaliddata;
940 static adns_status cs_rp(vbuf *vb, const void *datap) {
941 const adns_rr_strpair *rrp= datap;
944 st= csp_mailbox(vb,rrp->array[0]); if (st) return st;
946 st= csp_domain(vb,rrp->array[1]); if (st) return st;
955 static adns_status pa_soa(const parseinfo *pai, int cbyte,
956 int max, void *datap) {
957 adns_rr_soa *rrp= datap;
958 const byte *dgram= pai->dgram;
962 st= pap_domain(pai, &cbyte, max, &rrp->mname,
963 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
966 st= pap_mailbox(pai, &cbyte, max, &rrp->rname);
969 if (cbyte+20 != max) return adns_s_invaliddata;
971 for (i=0; i<5; i++) {
974 (&rrp->serial)[i]= (msw<<16) | lsw;
980 static void mf_soa(adns_query qu, void *datap) {
981 adns_rr_soa *rrp= datap;
983 adns__makefinal_str(qu,&rrp->mname);
984 adns__makefinal_str(qu,&rrp->rname);
987 static adns_status cs_soa(vbuf *vb, const void *datap) {
988 const adns_rr_soa *rrp= datap;
993 st= csp_domain(vb,rrp->mname); if (st) return st;
995 st= csp_mailbox(vb,rrp->rname); if (st) return st;
997 for (i=0; i<5; i++) {
998 sprintf(buf," %lu",(&rrp->serial)[i]);
1006 * _srv* (pa*2,di,cs*2,qdpl)
1009 static adns_status qdpl_srv(adns_state ads,
1010 const char **p_io, const char *pe, int labelnum,
1011 char label_r[DNS_MAXDOMAIN], int *ll_io,
1012 adns_queryflags flags,
1013 const typeinfo *typei) {
1018 if (labelnum < 2 && !(flags & adns_qf_quoteok_query)) {
1019 useflags= adns_qf_quoteok_query;
1025 st= adns__qdpl_normal(ads, p_io,pe, labelnum,label_r, ll_io, useflags,typei);
1030 if (!ll || label_r[0]!='_')
1031 return adns_s_querydomaininvalid;
1032 if (memchr(p_orig+1, '\\', pe - (p_orig+1)))
1033 return adns_s_querydomaininvalid;
1038 static adns_status pap_srv_begin(const parseinfo *pai, int *cbyte_io, int max,
1040 /* might be adns_rr_srvha* */) {
1041 const byte *dgram= pai->dgram;
1045 if ((*cbyte_io += 6) > max) return adns_s_invaliddata;
1047 rrp->priority= GET_W(cbyte, ti);
1048 rrp->weight= GET_W(cbyte, ti);
1049 rrp->port= GET_W(cbyte, ti);
1053 static adns_status pa_srvraw(const parseinfo *pai, int cbyte,
1054 int max, void *datap) {
1055 adns_rr_srvraw *rrp= datap;
1058 st= pap_srv_begin(pai,&cbyte,max,datap);
1061 st= pap_domain(pai, &cbyte, max, &rrp->host,
1062 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
1065 if (cbyte != max) return adns_s_invaliddata;
1069 static adns_status pa_srvha(const parseinfo *pai, int cbyte,
1070 int max, void *datap) {
1071 adns_rr_srvha *rrp= datap;
1074 st= pap_srv_begin(pai,&cbyte,max,datap); if (st) return st;
1075 st= pap_hostaddr(pai, &cbyte, max, &rrp->ha); if (st) return st;
1076 if (cbyte != max) return adns_s_invaliddata;
1080 static void mf_srvraw(adns_query qu, void *datap) {
1081 adns_rr_srvraw *rrp= datap;
1082 adns__makefinal_str(qu, &rrp->host);
1085 static void mf_srvha(adns_query qu, void *datap) {
1086 adns_rr_srvha *rrp= datap;
1087 mfp_hostaddr(qu,&rrp->ha);
1090 static int di_srv(adns_state ads, const void *datap_a, const void *datap_b) {
1091 const adns_rr_srvraw *ap= datap_a, *bp= datap_b;
1092 /* might be const adns_rr_svhostaddr* */
1094 if (ap->priority < bp->priority) return 0;
1095 if (ap->priority > bp->priority) return 1;
1099 static adns_status csp_srv_begin(vbuf *vb, const adns_rr_srvraw *rrp
1100 /* might be adns_rr_srvha* */) {
1102 sprintf(buf,"%u %u %u ", rrp->priority, rrp->weight, rrp->port);
1107 static adns_status cs_srvraw(vbuf *vb, const void *datap) {
1108 const adns_rr_srvraw *rrp= datap;
1111 st= csp_srv_begin(vb,rrp); if (st) return st;
1112 return csp_domain(vb,rrp->host);
1115 static adns_status cs_srvha(vbuf *vb, const void *datap) {
1116 const adns_rr_srvha *rrp= datap;
1119 st= csp_srv_begin(vb,datap); if (st) return st;
1120 return csp_hostaddr(vb,&rrp->ha);
1127 static void mf_flat(adns_query qu, void *data) { }
1133 #define TYPESZ_M(member) (sizeof(*((adns_answer*)0)->rrs.member))
1135 #define DEEP_MEMB(memb) TYPESZ_M(memb), mf_##memb, cs_##memb
1136 #define FLAT_MEMB(memb) TYPESZ_M(memb), mf_flat, cs_##memb
1138 #define DEEP_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \
1139 { adns_r_##code, rrt,fmt,TYPESZ_M(memb), mf_##memb, \
1140 printer,parser,comparer, adns__qdpl_normal }
1141 #define FLAT_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \
1142 { adns_r_##code, rrt,fmt,TYPESZ_M(memb), mf_flat, \
1143 printer,parser,comparer, adns__qdpl_normal }
1144 #define XTRA_TYPE(code,rrt,fmt,memb,parser,comparer,printer,qdpl) \
1145 { adns_r_##code, rrt,fmt,TYPESZ_M(memb), mf_##memb, \
1146 printer,parser,comparer,qdpl }
1148 static const typeinfo typeinfos[] = {
1149 /* Must be in ascending order of rrtype ! */
1150 /* mem-mgmt code rrt fmt member parser comparer printer */
1152 FLAT_TYPE(a, "A", 0, inaddr, pa_inaddr, di_inaddr,cs_inaddr ),
1153 DEEP_TYPE(ns_raw, "NS", "raw",str, pa_host_raw,0, cs_domain ),
1154 DEEP_TYPE(cname, "CNAME", 0, str, pa_dom_raw, 0, cs_domain ),
1155 DEEP_TYPE(soa_raw,"SOA", "raw",soa, pa_soa, 0, cs_soa ),
1156 DEEP_TYPE(ptr_raw,"PTR", "raw",str, pa_host_raw,0, cs_domain ),
1157 DEEP_TYPE(hinfo, "HINFO", 0, intstrpair,pa_hinfo, 0, cs_hinfo ),
1158 DEEP_TYPE(mx_raw, "MX", "raw",intstr, pa_mx_raw, di_mx_raw,cs_inthost ),
1159 DEEP_TYPE(txt, "TXT", 0, manyistr,pa_txt, 0, cs_txt ),
1160 DEEP_TYPE(rp_raw, "RP", "raw",strpair, pa_rp, 0, cs_rp ),
1161 XTRA_TYPE(srv_raw,"SRV", "raw",srvraw , pa_srvraw, di_srv,cs_srvraw,qdpl_srv),
1163 FLAT_TYPE(addr, "A", "addr", addr, pa_addr, di_addr, cs_addr ),
1164 DEEP_TYPE(ns, "NS", "+addr",hostaddr,pa_hostaddr,di_hostaddr,cs_hostaddr ),
1165 DEEP_TYPE(ptr, "PTR","checked",str, pa_ptr, 0, cs_domain ),
1166 DEEP_TYPE(mx, "MX", "+addr",inthostaddr,pa_mx, di_mx, cs_inthostaddr),
1167 XTRA_TYPE(srv, "SRV","+addr",srvha, pa_srvha, di_srv,cs_srvha, qdpl_srv),
1169 DEEP_TYPE(soa, "SOA","822", soa, pa_soa, 0, cs_soa ),
1170 DEEP_TYPE(rp, "RP", "822", strpair, pa_rp, 0, cs_rp ),
1173 const typeinfo *adns__findtype(adns_rrtype type) {
1174 const typeinfo *begin, *end, *mid;
1176 begin= typeinfos; end= typeinfos+(sizeof(typeinfos)/sizeof(typeinfo));
1178 while (begin < end) {
1179 mid= begin + ((end-begin)>>1);
1180 if (mid->type == type) return mid;
1181 if (type > mid->type) begin= mid+1;