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,postsort)
69 * within each section:
86 static adns_status pap_qstring(const parseinfo *pai, int *cbyte_io, int max,
87 int *len_r, char **str_r) {
88 /* Neither len_r nor str_r may be null.
89 * End of datagram (overrun) is indicated by returning adns_s_invaliddata;
91 const byte *dgram= pai->dgram;
97 if (cbyte >= max) return adns_s_invaliddata;
99 if (cbyte+l > max) return adns_s_invaliddata;
101 str= adns__alloc_interim(pai->qu, l+1);
105 memcpy(str,dgram+cbyte,l);
114 static adns_status csp_qstring(vbuf *vb, const char *dp, int len) {
120 for (cn=0; cn<len; cn++) {
124 } else if (ch == '"') {
126 } else if (ch >= 32 && ch <= 126) {
127 if (!adns__vbuf_append(vb,&ch,1)) R_NOMEM;
129 sprintf(buf,"\\x%02x",ch);
142 static void mf_str(adns_query qu, void *datap) {
145 adns__makefinal_str(qu,rrp);
152 static void mf_intstr(adns_query qu, void *datap) {
153 adns_rr_intstr *rrp= datap;
155 adns__makefinal_str(qu,&rrp->str);
162 static void mf_manyistr(adns_query qu, void *datap) {
163 adns_rr_intstr **rrp= datap;
164 adns_rr_intstr *te, *table;
168 for (tc=0, te= *rrp; te->i >= 0; te++, tc++);
170 adns__makefinal_block(qu,&tablev,sizeof(*te)*(tc+1));
172 for (te= *rrp; te->i >= 0; te++)
173 adns__makefinal_str(qu,&te->str);
180 static adns_status pa_txt(const parseinfo *pai, int cbyte,
181 int max, void *datap) {
182 adns_rr_intstr **rrp= datap, *table, *te;
183 const byte *dgram= pai->dgram;
184 int ti, tc, l, startbyte;
188 if (cbyte >= max) return adns_s_invaliddata;
190 while (cbyte < max) {
195 if (cbyte != max || !tc) return adns_s_invaliddata;
197 table= adns__alloc_interim(pai->qu,sizeof(*table)*(tc+1));
200 for (cbyte=startbyte, ti=0, te=table; ti<tc; ti++, te++) {
201 st= pap_qstring(pai, &cbyte, max, &te->i, &te->str);
204 assert(cbyte == max);
213 static adns_status cs_txt(vbuf *vb, const void *datap) {
214 const adns_rr_intstr *const *rrp= datap;
215 const adns_rr_intstr *current;
219 for (current= *rrp, spc=0; current->i >= 0; current++, spc=1) {
220 if (spc) CSP_ADDSTR(" ");
221 st= csp_qstring(vb,current->str,current->i); if (st) return st;
230 static adns_status cs_hinfo(vbuf *vb, const void *datap) {
231 const adns_rr_intstrpair *rrp= datap;
234 st= csp_qstring(vb,rrp->array[0].str,rrp->array[0].i); if (st) return st;
236 st= csp_qstring(vb,rrp->array[1].str,rrp->array[1].i); if (st) return st;
241 * _inaddr (pa,dip,di)
244 static adns_status pa_inaddr(const parseinfo *pai, int cbyte,
245 int max, void *datap) {
246 struct in_addr *storeto= datap;
248 if (max-cbyte != 4) return adns_s_invaliddata;
249 memcpy(storeto, pai->dgram + cbyte, 4);
253 static int search_sortlist(adns_state ads, struct in_addr ad) {
254 const struct sortlist *slp;
257 for (i=0, slp=ads->sortlist;
259 !((ad.s_addr & slp->mask.s_addr) == slp->base.s_addr);
264 static int dip_inaddr(adns_state ads, struct in_addr a, struct in_addr b) {
267 if (!ads->nsortlist) return 0;
269 ai= search_sortlist(ads,a);
270 bi= search_sortlist(ads,b);
274 static int di_inaddr(adns_state ads,
275 const void *datap_a, const void *datap_b) {
276 const struct in_addr *ap= datap_a, *bp= datap_b;
278 return dip_inaddr(ads,*ap,*bp);
281 static adns_status cs_inaddr(vbuf *vb, const void *datap) {
282 const struct in_addr *rrp= datap, rr= *rrp;
285 ia= inet_ntoa(rr); assert(ia);
291 * _addr (pa,di,csp,cs)
294 static adns_status pa_addr(const parseinfo *pai, int cbyte,
295 int max, void *datap) {
296 adns_rr_addr *storeto= datap;
297 const byte *dgram= pai->dgram;
299 if (max-cbyte != 4) return adns_s_invaliddata;
300 storeto->len= sizeof(storeto->addr.inet);
301 memset(&storeto->addr,0,sizeof(storeto->addr.inet));
302 storeto->addr.inet.sin_family= AF_INET;
303 memcpy(&storeto->addr.inet.sin_addr,dgram+cbyte,4);
307 static int di_addr(adns_state ads, const void *datap_a, const void *datap_b) {
308 const adns_rr_addr *ap= datap_a, *bp= datap_b;
310 assert(ap->addr.sa.sa_family == AF_INET);
311 return dip_inaddr(ads, ap->addr.inet.sin_addr, bp->addr.inet.sin_addr);
314 static int div_addr(void *context, const void *datap_a, const void *datap_b) {
315 const adns_state ads= context;
317 return di_addr(ads, datap_a, datap_b);
320 static adns_status csp_addr(vbuf *vb, const adns_rr_addr *rrp) {
324 switch (rrp->addr.inet.sin_family) {
327 ia= inet_ntoa(rrp->addr.inet.sin_addr); assert(ia);
331 sprintf(buf,"AF=%u",rrp->addr.sa.sa_family);
338 static adns_status cs_addr(vbuf *vb, const void *datap) {
339 const adns_rr_addr *rrp= datap;
341 return csp_addr(vb,rrp);
345 * _domain (pap,csp,cs)
349 static adns_status pap_domain(const parseinfo *pai, int *cbyte_io, int max,
350 char **domain_r, parsedomain_flags flags) {
354 st= adns__parse_domain(pai->qu->ads, pai->serv, pai->qu, &pai->qu->vb, flags,
355 pai->dgram,pai->dglen, cbyte_io, max);
357 if (!pai->qu->vb.used) return adns_s_invaliddata;
359 dm= adns__alloc_interim(pai->qu, pai->qu->vb.used+1);
362 dm[pai->qu->vb.used]= 0;
363 memcpy(dm,pai->qu->vb.buf,pai->qu->vb.used);
369 static adns_status csp_domain(vbuf *vb, const char *domain) {
371 if (!*domain) CSP_ADDSTR(".");
375 static adns_status cs_domain(vbuf *vb, const void *datap) {
376 const char *const *domainp= datap;
377 return csp_domain(vb,*domainp);
380 static adns_status pa_dom_raw(const parseinfo *pai, int cbyte,
381 int max, void *datap) {
385 st= pap_domain(pai, &cbyte, max, rrp, pdf_quoteok);
388 if (cbyte != max) return adns_s_invaliddata;
396 static adns_status pa_host_raw(const parseinfo *pai, int cbyte,
397 int max, void *datap) {
401 st= pap_domain(pai, &cbyte, max, rrp,
402 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
405 if (cbyte != max) return adns_s_invaliddata;
410 * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +icb_hostaddr, pap_findaddrs)
413 static adns_status pap_findaddrs(const parseinfo *pai, adns_rr_hostaddr *ha,
414 int *cbyte_io, int count, int dmstart) {
416 int type, class, rdlen, rdstart, ownermatched;
420 for (rri=0, naddrs=-1; rri<count; rri++) {
421 st= adns__findrr_anychk(pai->qu, pai->serv, pai->dgram,
422 pai->dglen, cbyte_io,
423 &type, &class, &ttl, &rdlen, &rdstart,
424 pai->dgram, pai->dglen, dmstart, &ownermatched);
426 if (!ownermatched || class != DNS_CLASS_IN || type != adns_r_a) {
427 if (naddrs>0) break; else continue;
432 if (!adns__vbuf_ensure(&pai->qu->vb, (naddrs+1)*sizeof(adns_rr_addr)))
434 adns__update_expires(pai->qu,ttl,pai->now);
435 st= pa_addr(pai, rdstart,rdstart+rdlen,
436 pai->qu->vb.buf + naddrs*sizeof(adns_rr_addr));
441 ha->addrs= adns__alloc_interim(pai->qu, naddrs*sizeof(adns_rr_addr));
442 if (!ha->addrs) R_NOMEM;
443 memcpy(ha->addrs, pai->qu->vb.buf, naddrs*sizeof(adns_rr_addr));
445 ha->astatus= adns_s_ok;
447 adns__isort(ha->addrs, naddrs, sizeof(adns_rr_addr), pai->qu->vb.buf,
453 static void icb_hostaddr(adns_query parent, adns_query child) {
454 adns_answer *cans= child->answer;
455 adns_rr_hostaddr *rrp= child->ctx.info.hostaddr;
456 adns_state ads= parent->ads;
461 rrp->naddrs= (st>0 && st<=adns_s_max_tempfail) ? -1 : cans->nrrs;
462 rrp->addrs= cans->rrs.addr;
463 adns__transfer_interim(child, parent, rrp->addrs,
464 rrp->naddrs*sizeof(adns_rr_addr));
466 if (parent->children.head) {
467 LIST_LINK_TAIL(ads->childw,parent);
469 adns__query_done(parent);
473 static adns_status pap_hostaddr(const parseinfo *pai, int *cbyte_io,
474 int max, adns_rr_hostaddr *rrp) {
480 adns_queryflags nflags;
482 dmstart= cbyte= *cbyte_io;
483 st= pap_domain(pai, &cbyte, max, &rrp->host,
484 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
488 rrp->astatus= adns_s_ok;
494 st= pap_findaddrs(pai, rrp, &cbyte, pai->nscount, dmstart);
496 if (rrp->naddrs != -1) return adns_s_ok;
498 st= pap_findaddrs(pai, rrp, &cbyte, pai->arcount, dmstart);
500 if (rrp->naddrs != -1) return adns_s_ok;
502 st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id,
503 pai->dgram, pai->dglen, dmstart,
504 adns_r_addr, adns_qf_quoteok_query);
508 ctx.callback= icb_hostaddr;
509 ctx.info.hostaddr= rrp;
511 nflags= adns_qf_quoteok_query;
512 if (!(pai->qu->flags & adns_qf_cname_loose)) nflags |= adns_qf_cname_forbid;
514 st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr),
515 &pai->qu->vb, id, nflags, pai->now, &ctx);
518 nqu->parent= pai->qu;
519 LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.);
524 static adns_status pa_hostaddr(const parseinfo *pai, int cbyte,
525 int max, void *datap) {
526 adns_rr_hostaddr *rrp= datap;
529 st= pap_hostaddr(pai, &cbyte, max, rrp);
531 if (cbyte != max) return adns_s_invaliddata;
536 static int dip_hostaddr(adns_state ads,
537 const adns_rr_hostaddr *ap, const adns_rr_hostaddr *bp) {
538 if (ap->astatus != bp->astatus) return ap->astatus;
539 if (ap->astatus) return 0;
541 assert(ap->addrs[0].addr.sa.sa_family == AF_INET);
542 assert(bp->addrs[0].addr.sa.sa_family == AF_INET);
543 return dip_inaddr(ads,
544 ap->addrs[0].addr.inet.sin_addr,
545 bp->addrs[0].addr.inet.sin_addr);
548 static int di_hostaddr(adns_state ads,
549 const void *datap_a, const void *datap_b) {
550 const adns_rr_hostaddr *ap= datap_a, *bp= datap_b;
552 return dip_hostaddr(ads, ap,bp);
555 static void mfp_hostaddr(adns_query qu, adns_rr_hostaddr *rrp) {
558 adns__makefinal_str(qu,&rrp->host);
560 adns__makefinal_block(qu, &tablev, rrp->naddrs*sizeof(*rrp->addrs));
564 static void mf_hostaddr(adns_query qu, void *datap) {
565 adns_rr_hostaddr *rrp= datap;
567 mfp_hostaddr(qu,rrp);
570 static adns_status csp_hostaddr(vbuf *vb, const adns_rr_hostaddr *rrp) {
576 st= csp_domain(vb,rrp->host); if (st) return st;
579 CSP_ADDSTR(adns_errtypeabbrev(rrp->astatus));
581 sprintf(buf," %d ",rrp->astatus);
584 CSP_ADDSTR(adns_errabbrev(rrp->astatus));
587 errstr= adns_strerror(rrp->astatus);
588 st= csp_qstring(vb,errstr,strlen(errstr)); if (st) return st;
590 if (rrp->naddrs >= 0) {
592 for (i=0; i<rrp->naddrs; i++) {
594 st= csp_addr(vb,&rrp->addrs[i]);
603 static adns_status cs_hostaddr(vbuf *vb, const void *datap) {
604 const adns_rr_hostaddr *rrp= datap;
606 return csp_hostaddr(vb,rrp);
613 static adns_status pa_mx_raw(const parseinfo *pai, int cbyte,
614 int max, void *datap) {
615 const byte *dgram= pai->dgram;
616 adns_rr_intstr *rrp= datap;
620 if (cbyte+2 > max) return adns_s_invaliddata;
623 st= pap_domain(pai, &cbyte, max, &rrp->str,
624 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
627 if (cbyte != max) return adns_s_invaliddata;
631 static int di_mx_raw(adns_state ads, const void *datap_a, const void *datap_b) {
632 const adns_rr_intstr *ap= datap_a, *bp= datap_b;
634 if (ap->i < bp->i) return 0;
635 if (ap->i > bp->i) return 1;
643 static adns_status pa_mx(const parseinfo *pai, int cbyte,
644 int max, void *datap) {
645 const byte *dgram= pai->dgram;
646 adns_rr_inthostaddr *rrp= datap;
650 if (cbyte+2 > max) return adns_s_invaliddata;
653 st= pap_hostaddr(pai, &cbyte, max, &rrp->ha);
656 if (cbyte != max) return adns_s_invaliddata;
660 static int di_mx(adns_state ads, const void *datap_a, const void *datap_b) {
661 const adns_rr_inthostaddr *ap= datap_a, *bp= datap_b;
663 if (ap->i < bp->i) return 0;
664 if (ap->i > bp->i) return 1;
665 return dip_hostaddr(ads, &ap->ha, &bp->ha);
669 * _inthostaddr (mf,cs)
672 static void mf_inthostaddr(adns_query qu, void *datap) {
673 adns_rr_inthostaddr *rrp= datap;
675 mfp_hostaddr(qu,&rrp->ha);
678 static adns_status cs_inthostaddr(vbuf *vb, const void *datap) {
679 const adns_rr_inthostaddr *rrp= datap;
682 sprintf(buf,"%u ",rrp->i);
685 return csp_hostaddr(vb,&rrp->ha);
692 static adns_status cs_inthost(vbuf *vb, const void *datap) {
693 const adns_rr_intstr *rrp= datap;
696 sprintf(buf,"%u ",rrp->i);
698 return csp_domain(vb,rrp->str);
702 * _ptr (pa, +icb_ptr)
705 static void icb_ptr(adns_query parent, adns_query child) {
706 adns_answer *cans= child->answer;
707 const adns_rr_addr *queried, *found;
708 adns_state ads= parent->ads;
711 if (cans->status == adns_s_nxdomain || cans->status == adns_s_nodata) {
712 adns__query_fail(parent,adns_s_inconsistent);
714 } else if (cans->status) {
715 adns__query_fail(parent,cans->status);
719 queried= &parent->ctx.info.ptr_parent_addr;
720 for (i=0, found=cans->rrs.addr; i<cans->nrrs; i++, found++) {
721 if (queried->len == found->len &&
722 !memcmp(&queried->addr,&found->addr,queried->len)) {
723 if (!parent->children.head) {
724 adns__query_done(parent);
727 LIST_LINK_TAIL(ads->childw,parent);
733 adns__query_fail(parent,adns_s_inconsistent);
736 static adns_status pa_ptr(const parseinfo *pai, int dmstart,
737 int max, void *datap) {
738 static const char *(expectdomain[])= { DNS_INADDR_ARPA };
747 int cbyte, i, lablen, labstart, l, id;
752 st= pap_domain(pai, &cbyte, max, rrp,
753 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
755 if (cbyte != max) return adns_s_invaliddata;
757 ap= &pai->qu->ctx.info.ptr_parent_addr;
759 adns__findlabel_start(&fls, pai->ads, -1, pai->qu,
760 pai->qu->query_dgram, pai->qu->query_dglen,
761 pai->qu->query_dglen, DNS_HDRSIZE, 0);
762 for (i=0; i<4; i++) {
763 st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st);
764 if (lablen<=0 || lablen>3) return adns_s_querydomainwrong;
765 memcpy(labbuf, pai->qu->query_dgram + labstart, lablen);
767 ipv[3-i]= strtoul(labbuf,&ep,10);
768 if (*ep) return adns_s_querydomainwrong;
769 if (lablen>1 && pai->qu->query_dgram[labstart]=='0')
770 return adns_s_querydomainwrong;
772 for (i=0; i<sizeof(expectdomain)/sizeof(*expectdomain); i++) {
773 st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st);
774 l= strlen(expectdomain[i]);
776 memcmp(pai->qu->query_dgram + labstart, expectdomain[i], l))
777 return adns_s_querydomainwrong;
779 st= adns__findlabel_next(&fls,&lablen,0); assert(!st);
780 if (lablen) return adns_s_querydomainwrong;
782 ap->len= sizeof(struct sockaddr_in);
783 memset(&ap->addr,0,sizeof(ap->addr.inet));
784 ap->addr.inet.sin_family= AF_INET;
785 ap->addr.inet.sin_addr.s_addr=
786 htonl((ipv[0]<<24) | (ipv[1]<<16) | (ipv[2]<<8) | (ipv[3]));
789 st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id,
790 pai->dgram, pai->dglen, dmstart,
791 adns_r_addr, adns_qf_quoteok_query);
795 ctx.callback= icb_ptr;
796 memset(&ctx.info,0,sizeof(ctx.info));
797 st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr),
799 adns_qf_quoteok_query, pai->now, &ctx);
802 nqu->parent= pai->qu;
803 LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.);
811 static void mf_strpair(adns_query qu, void *datap) {
812 adns_rr_strpair *rrp= datap;
814 adns__makefinal_str(qu,&rrp->array[0]);
815 adns__makefinal_str(qu,&rrp->array[1]);
822 static void mf_intstrpair(adns_query qu, void *datap) {
823 adns_rr_intstrpair *rrp= datap;
825 adns__makefinal_str(qu,&rrp->array[0].str);
826 adns__makefinal_str(qu,&rrp->array[1].str);
833 static adns_status pa_hinfo(const parseinfo *pai, int cbyte,
834 int max, void *datap) {
835 adns_rr_intstrpair *rrp= datap;
839 for (i=0; i<2; i++) {
840 st= pap_qstring(pai, &cbyte, max, &rrp->array[i].i, &rrp->array[i].str);
844 if (cbyte != max) return adns_s_invaliddata;
853 static adns_status pap_mailbox822(const parseinfo *pai,
854 int *cbyte_io, int max, char **mb_r) {
855 int lablen, labstart, i, needquote, c, r, neednorm;
856 const unsigned char *p;
864 adns__findlabel_start(&fls, pai->ads,
866 pai->dgram, pai->dglen, max,
867 *cbyte_io, cbyte_io);
868 st= adns__findlabel_next(&fls,&lablen,&labstart);
870 adns__vbuf_appendstr(vb,".");
875 for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++) {
877 if ((c&~128) < 32 || (c&~128) == 127) return adns_s_invaliddata;
878 if (c == '.' && !neednorm) neednorm= 1;
879 else if (c==' ' || c>=127 || ctype_822special(c)) needquote++;
883 if (needquote || neednorm) {
884 r= adns__vbuf_ensure(vb, lablen+needquote+4); if (!r) R_NOMEM;
885 adns__vbuf_appendq(vb,"\"",1);
886 for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++, p++) {
888 if (c == '"' || c=='\\') adns__vbuf_appendq(vb,"\\",1);
889 adns__vbuf_appendq(vb,p,1);
891 adns__vbuf_appendq(vb,"\"",1);
893 r= adns__vbuf_append(vb, pai->dgram+labstart, lablen); if (!r) R_NOMEM;
896 r= adns__vbuf_appendstr(vb,"@"); if (!r) R_NOMEM;
898 st= adns__parse_domain_more(&fls,pai->ads, pai->qu,vb,0, pai->dgram);
902 str= adns__alloc_interim(pai->qu, vb->used+1); if (!str) R_NOMEM;
903 memcpy(str,vb->buf,vb->used);
909 static adns_status pap_mailbox(const parseinfo *pai, int *cbyte_io, int max,
911 if (pai->qu->typei->type & adns__qtf_mail822) {
912 return pap_mailbox822(pai, cbyte_io, max, mb_r);
914 return pap_domain(pai, cbyte_io, max, mb_r, pdf_quoteok);
918 static adns_status csp_mailbox(vbuf *vb, const char *mailbox) {
919 return csp_domain(vb,mailbox);
926 static adns_status pa_rp(const parseinfo *pai, int cbyte,
927 int max, void *datap) {
928 adns_rr_strpair *rrp= datap;
931 st= pap_mailbox(pai, &cbyte, max, &rrp->array[0]);
934 st= pap_domain(pai, &cbyte, max, &rrp->array[1], pdf_quoteok);
937 if (cbyte != max) return adns_s_invaliddata;
941 static adns_status cs_rp(vbuf *vb, const void *datap) {
942 const adns_rr_strpair *rrp= datap;
945 st= csp_mailbox(vb,rrp->array[0]); if (st) return st;
947 st= csp_domain(vb,rrp->array[1]); if (st) return st;
956 static adns_status pa_soa(const parseinfo *pai, int cbyte,
957 int max, void *datap) {
958 adns_rr_soa *rrp= datap;
959 const byte *dgram= pai->dgram;
963 st= pap_domain(pai, &cbyte, max, &rrp->mname,
964 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
967 st= pap_mailbox(pai, &cbyte, max, &rrp->rname);
970 if (cbyte+20 != max) return adns_s_invaliddata;
972 for (i=0; i<5; i++) {
975 (&rrp->serial)[i]= (msw<<16) | lsw;
981 static void mf_soa(adns_query qu, void *datap) {
982 adns_rr_soa *rrp= datap;
984 adns__makefinal_str(qu,&rrp->mname);
985 adns__makefinal_str(qu,&rrp->rname);
988 static adns_status cs_soa(vbuf *vb, const void *datap) {
989 const adns_rr_soa *rrp= datap;
994 st= csp_domain(vb,rrp->mname); if (st) return st;
996 st= csp_mailbox(vb,rrp->rname); if (st) return st;
998 for (i=0; i<5; i++) {
999 sprintf(buf," %lu",(&rrp->serial)[i]);
1007 * _srv* (pa*2,di,cs*2,qdpl,postsort)
1010 static adns_status qdpl_srv(adns_state ads,
1011 const char **p_io, const char *pe, int labelnum,
1012 char label_r[DNS_MAXDOMAIN], int *ll_io,
1013 adns_queryflags flags,
1014 const typeinfo *typei) {
1019 if (labelnum < 2 && !(flags & adns_qf_quoteok_query)) {
1020 useflags= adns_qf_quoteok_query;
1026 st= adns__qdpl_normal(ads, p_io,pe, labelnum,label_r, ll_io, useflags,typei);
1031 if (!ll || label_r[0]!='_')
1032 return adns_s_querydomaininvalid;
1033 if (memchr(p_orig+1, '\\', pe - (p_orig+1)))
1034 return adns_s_querydomaininvalid;
1039 static adns_status pap_srv_begin(const parseinfo *pai, int *cbyte_io, int max,
1041 /* might be adns_rr_srvha* */) {
1042 const byte *dgram= pai->dgram;
1046 if ((*cbyte_io += 6) > max) return adns_s_invaliddata;
1048 rrp->priority= GET_W(cbyte, ti);
1049 rrp->weight= GET_W(cbyte, ti);
1050 rrp->port= GET_W(cbyte, ti);
1054 static adns_status pa_srvraw(const parseinfo *pai, int cbyte,
1055 int max, void *datap) {
1056 adns_rr_srvraw *rrp= datap;
1059 st= pap_srv_begin(pai,&cbyte,max,datap);
1062 st= pap_domain(pai, &cbyte, max, &rrp->host,
1063 pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
1066 if (cbyte != max) return adns_s_invaliddata;
1070 static adns_status pa_srvha(const parseinfo *pai, int cbyte,
1071 int max, void *datap) {
1072 adns_rr_srvha *rrp= datap;
1075 st= pap_srv_begin(pai,&cbyte,max,datap); if (st) return st;
1076 st= pap_hostaddr(pai, &cbyte, max, &rrp->ha); if (st) return st;
1077 if (cbyte != max) return adns_s_invaliddata;
1081 static void mf_srvraw(adns_query qu, void *datap) {
1082 adns_rr_srvraw *rrp= datap;
1083 adns__makefinal_str(qu, &rrp->host);
1086 static void mf_srvha(adns_query qu, void *datap) {
1087 adns_rr_srvha *rrp= datap;
1088 mfp_hostaddr(qu,&rrp->ha);
1091 static int di_srv(adns_state ads, const void *datap_a, const void *datap_b) {
1092 const adns_rr_srvraw *ap= datap_a, *bp= datap_b;
1093 /* might be const adns_rr_svhostaddr* */
1095 if (ap->priority < bp->priority) return 0;
1096 if (ap->priority > bp->priority) return 1;
1100 static adns_status csp_srv_begin(vbuf *vb, const adns_rr_srvraw *rrp
1101 /* might be adns_rr_srvha* */) {
1103 sprintf(buf,"%u %u %u ", rrp->priority, rrp->weight, rrp->port);
1108 static adns_status cs_srvraw(vbuf *vb, const void *datap) {
1109 const adns_rr_srvraw *rrp= datap;
1112 st= csp_srv_begin(vb,rrp); if (st) return st;
1113 return csp_domain(vb,rrp->host);
1116 static adns_status cs_srvha(vbuf *vb, const void *datap) {
1117 const adns_rr_srvha *rrp= datap;
1120 st= csp_srv_begin(vb,datap); if (st) return st;
1121 return csp_hostaddr(vb,&rrp->ha);
1124 static void postsort_srv(adns_state ads, void *array, int nobjs,
1125 const struct typeinfo *typei) {
1126 fprintf(stderr,"(postsort_srv)\n");
1128 * dig -t srv _srv._tcp.test.iwj.relativity.greenend.org.uk.
1129 * ./adnshost_s -t srv- _sip._udp.voip.net.cam.ac.uk.
1130 * ./adnshost_s -t srv- _jabber._tcp.jabber.org
1138 static void mf_flat(adns_query qu, void *data) { }
1144 #define TYPESZ_M(member) (sizeof(*((adns_answer*)0)->rrs.member))
1146 #define DEEP_MEMB(memb) TYPESZ_M(memb), mf_##memb, cs_##memb
1147 #define FLAT_MEMB(memb) TYPESZ_M(memb), mf_flat, cs_##memb
1149 #define DEEP_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \
1150 { adns_r_##code, rrt,fmt,TYPESZ_M(memb), mf_##memb, \
1151 printer,parser,comparer, adns__qdpl_normal,0 }
1152 #define FLAT_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \
1153 { adns_r_##code, rrt,fmt,TYPESZ_M(memb), mf_flat, \
1154 printer,parser,comparer, adns__qdpl_normal,0 }
1155 #define XTRA_TYPE(code,rrt,fmt,memb,parser,comparer,printer,qdpl,postsort) \
1156 { adns_r_##code, rrt,fmt,TYPESZ_M(memb), mf_##memb, \
1157 printer,parser,comparer,qdpl,postsort }
1159 static const typeinfo typeinfos[] = {
1160 /* Must be in ascending order of rrtype ! */
1161 /* mem-mgmt code rrt fmt member parser comparer printer */
1163 FLAT_TYPE(a, "A", 0, inaddr, pa_inaddr, di_inaddr,cs_inaddr ),
1164 DEEP_TYPE(ns_raw, "NS", "raw",str, pa_host_raw,0, cs_domain ),
1165 DEEP_TYPE(cname, "CNAME", 0, str, pa_dom_raw, 0, cs_domain ),
1166 DEEP_TYPE(soa_raw,"SOA", "raw",soa, pa_soa, 0, cs_soa ),
1167 DEEP_TYPE(ptr_raw,"PTR", "raw",str, pa_host_raw,0, cs_domain ),
1168 DEEP_TYPE(hinfo, "HINFO", 0, intstrpair,pa_hinfo, 0, cs_hinfo ),
1169 DEEP_TYPE(mx_raw, "MX", "raw",intstr, pa_mx_raw, di_mx_raw,cs_inthost ),
1170 DEEP_TYPE(txt, "TXT", 0, manyistr,pa_txt, 0, cs_txt ),
1171 DEEP_TYPE(rp_raw, "RP", "raw",strpair, pa_rp, 0, cs_rp ),
1172 XTRA_TYPE(srv_raw,"SRV", "raw",srvraw , pa_srvraw, di_srv, cs_srvraw,
1173 qdpl_srv, postsort_srv),
1175 FLAT_TYPE(addr, "A", "addr", addr, pa_addr, di_addr, cs_addr ),
1176 DEEP_TYPE(ns, "NS", "+addr",hostaddr,pa_hostaddr,di_hostaddr,cs_hostaddr ),
1177 DEEP_TYPE(ptr, "PTR","checked",str, pa_ptr, 0, cs_domain ),
1178 DEEP_TYPE(mx, "MX", "+addr",inthostaddr,pa_mx, di_mx, cs_inthostaddr),
1179 XTRA_TYPE(srv, "SRV","+addr",srvha, pa_srvha, di_srv, cs_srvha,
1180 qdpl_srv, postsort_srv),
1182 DEEP_TYPE(soa, "SOA","822", soa, pa_soa, 0, cs_soa ),
1183 DEEP_TYPE(rp, "RP", "822", strpair, pa_rp, 0, cs_rp ),
1186 const typeinfo *adns__findtype(adns_rrtype type) {
1187 const typeinfo *begin, *end, *mid;
1189 begin= typeinfos; end= typeinfos+(sizeof(typeinfos)/sizeof(typeinfo));
1191 while (begin < end) {
1192 mid= begin + ((end-begin)>>1);
1193 if (mid->type == type) return mid;
1194 if (type > mid->type) begin= mid+1;