+static adns_status pa_addr(const parseinfo *pai, int cbyte,
+ int max, void *datap) {
+ adns_rr_addr *storeto= datap;
+ const byte *dgram= pai->dgram;
+
+ if (max-cbyte != 4) return adns_s_invaliddata;
+ storeto->len= sizeof(storeto->addr.inet);
+ memset(&storeto->addr,0,sizeof(storeto->addr.inet));
+ storeto->addr.inet.sin_family= AF_INET;
+ memcpy(&storeto->addr.inet.sin_addr,dgram+cbyte,4);
+ return adns_s_ok;
+}
+
+static int di_addr(adns_state ads, const void *datap_a, const void *datap_b) {
+ const adns_rr_addr *ap= datap_a, *bp= datap_b;
+
+ assert(ap->addr.sa.sa_family == AF_INET);
+ return dip_inaddr(ads, ap->addr.inet.sin_addr, bp->addr.inet.sin_addr);
+}
+
+static int div_addr(void *context, const void *datap_a, const void *datap_b) {
+ const adns_state ads= context;
+
+ return di_addr(ads, datap_a, datap_b);
+}
+
+static adns_status csp_addr(vbuf *vb, const adns_rr_addr *rrp) {
+ const char *ia;
+ static char buf[30];
+
+ switch (rrp->addr.inet.sin_family) {
+ case AF_INET:
+ CSP_ADDSTR("INET ");
+ ia= inet_ntoa(rrp->addr.inet.sin_addr); assert(ia);
+ CSP_ADDSTR(ia);
+ break;
+ default:
+ sprintf(buf,"AF=%u",rrp->addr.sa.sa_family);
+ CSP_ADDSTR(buf);
+ break;
+ }
+ return adns_s_ok;
+}
+
+static adns_status cs_addr(vbuf *vb, const void *datap) {
+ const adns_rr_addr *rrp= datap;
+
+ return csp_addr(vb,rrp);
+}
+
+/*
+ * _domain (pap,csp,cs)
+ * _dom_raw (pa)
+ */
+
+static adns_status pap_domain(const parseinfo *pai, int *cbyte_io, int max,
+ char **domain_r, parsedomain_flags flags) {
+ adns_status st;
+ char *dm;
+
+ st= adns__parse_domain(pai->qu->ads, pai->serv, pai->qu, &pai->qu->vb, flags,
+ pai->dgram,pai->dglen, cbyte_io, max);
+ if (st) return st;
+ if (!pai->qu->vb.used) return adns_s_invaliddata;
+
+ dm= adns__alloc_interim(pai->qu, pai->qu->vb.used+1);
+ if (!dm) R_NOMEM;
+
+ dm[pai->qu->vb.used]= 0;
+ memcpy(dm,pai->qu->vb.buf,pai->qu->vb.used);
+
+ *domain_r= dm;
+ return adns_s_ok;
+}
+
+static adns_status csp_domain(vbuf *vb, const char *domain) {
+ CSP_ADDSTR(domain);
+ if (!*domain) CSP_ADDSTR(".");
+ return adns_s_ok;
+}
+
+static adns_status cs_domain(vbuf *vb, const void *datap) {
+ const char *const *domainp= datap;
+ return csp_domain(vb,*domainp);
+}
+
+static adns_status pa_dom_raw(const parseinfo *pai, int cbyte,
+ int max, void *datap) {
+ char **rrp= datap;
+ adns_status st;
+
+ st= pap_domain(pai, &cbyte, max, rrp, pdf_quoteok);
+ if (st) return st;
+
+ if (cbyte != max) return adns_s_invaliddata;
+ return adns_s_ok;
+}
+
+/*
+ * _host_raw (pa)
+ */
+
+static adns_status pa_host_raw(const parseinfo *pai, int cbyte,
+ int max, void *datap) {
+ char **rrp= datap;
+ adns_status st;
+
+ st= pap_domain(pai, &cbyte, max, rrp,
+ pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
+ if (st) return st;
+
+ if (cbyte != max) return adns_s_invaliddata;
+ return adns_s_ok;
+}
+
+/*
+ * _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +icb_hostaddr, pap_findaddrs)
+ */
+
+static adns_status pap_findaddrs(const parseinfo *pai, adns_rr_hostaddr *ha,
+ int *cbyte_io, int count, int dmstart) {
+ int rri, naddrs;
+ int type, class, rdlen, rdstart, ownermatched;
+ unsigned long ttl;
+ adns_status st;
+
+ for (rri=0, naddrs=-1; rri<count; rri++) {
+ st= adns__findrr_anychk(pai->qu, pai->serv, pai->dgram,
+ pai->dglen, cbyte_io,
+ &type, &class, &ttl, &rdlen, &rdstart,
+ pai->dgram, pai->dglen, dmstart, &ownermatched);
+ if (st) return st;
+ if (!ownermatched || class != DNS_CLASS_IN || type != adns_r_a) {
+ if (naddrs>0) break; else continue;
+ }
+ if (naddrs == -1) {
+ naddrs= 0;
+ }
+ if (!adns__vbuf_ensure(&pai->qu->vb, (naddrs+1)*sizeof(adns_rr_addr)))
+ R_NOMEM;
+ adns__update_expires(pai->qu,ttl,pai->now);
+ st= pa_addr(pai, rdstart,rdstart+rdlen,
+ pai->qu->vb.buf + naddrs*sizeof(adns_rr_addr));
+ if (st) return st;
+ naddrs++;
+ }
+ if (naddrs >= 0) {
+ ha->addrs= adns__alloc_interim(pai->qu, naddrs*sizeof(adns_rr_addr));
+ if (!ha->addrs) R_NOMEM;
+ memcpy(ha->addrs, pai->qu->vb.buf, naddrs*sizeof(adns_rr_addr));
+ ha->naddrs= naddrs;
+ ha->astatus= adns_s_ok;
+
+ adns__isort(ha->addrs, naddrs, sizeof(adns_rr_addr), pai->qu->vb.buf,
+ div_addr, pai->ads);
+ }
+ return adns_s_ok;
+}
+
+static void icb_hostaddr(adns_query parent, adns_query child) {
+ adns_answer *cans= child->answer;
+ adns_rr_hostaddr *rrp= child->ctx.info.hostaddr;
+ adns_state ads= parent->ads;
+ adns_status st;
+
+ st= cans->status;
+ rrp->astatus= st;
+ rrp->naddrs= (st>0 && st<=adns_s_max_tempfail) ? -1 : cans->nrrs;
+ rrp->addrs= cans->rrs.addr;
+ adns__transfer_interim(child, parent, rrp->addrs,
+ rrp->naddrs*sizeof(adns_rr_addr));
+
+ if (parent->children.head) {
+ LIST_LINK_TAIL(ads->childw,parent);
+ } else {
+ adns__query_done(parent);
+ }
+}
+
+static adns_status pap_hostaddr(const parseinfo *pai, int *cbyte_io,
+ int max, adns_rr_hostaddr *rrp) {
+ adns_status st;
+ int dmstart, cbyte;
+ qcontext ctx;
+ int id;
+ adns_query nqu;
+ adns_queryflags nflags;
+
+ dmstart= cbyte= *cbyte_io;
+ st= pap_domain(pai, &cbyte, max, &rrp->host,
+ pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
+ if (st) return st;
+ *cbyte_io= cbyte;
+
+ rrp->astatus= adns_s_ok;
+ rrp->naddrs= -1;
+ rrp->addrs= 0;
+
+ cbyte= pai->nsstart;
+
+ st= pap_findaddrs(pai, rrp, &cbyte, pai->nscount, dmstart);
+ if (st) return st;
+ if (rrp->naddrs != -1) return adns_s_ok;
+
+ st= pap_findaddrs(pai, rrp, &cbyte, pai->arcount, dmstart);
+ if (st) return st;
+ if (rrp->naddrs != -1) return adns_s_ok;
+
+ st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id,
+ pai->dgram, pai->dglen, dmstart,
+ adns_r_addr, adns_qf_quoteok_query);
+ if (st) return st;
+
+ ctx.ext= 0;
+ ctx.callback= icb_hostaddr;
+ ctx.info.hostaddr= rrp;
+
+ nflags= adns_qf_quoteok_query;
+ if (!(pai->qu->flags & adns_qf_cname_loose)) nflags |= adns_qf_cname_forbid;
+
+ st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr),
+ &pai->qu->vb, id, nflags, pai->now, &ctx);
+ if (st) return st;
+
+ nqu->parent= pai->qu;
+ LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.);
+
+ return adns_s_ok;
+}
+
+static adns_status pa_hostaddr(const parseinfo *pai, int cbyte,
+ int max, void *datap) {
+ adns_rr_hostaddr *rrp= datap;
+ adns_status st;
+
+ st= pap_hostaddr(pai, &cbyte, max, rrp);
+ if (st) return st;
+ if (cbyte != max) return adns_s_invaliddata;
+
+ return adns_s_ok;
+}
+
+static int dip_hostaddr(adns_state ads,
+ const adns_rr_hostaddr *ap, const adns_rr_hostaddr *bp) {
+ if (ap->astatus != bp->astatus) return ap->astatus;
+ if (ap->astatus) return 0;
+
+ assert(ap->addrs[0].addr.sa.sa_family == AF_INET);
+ assert(bp->addrs[0].addr.sa.sa_family == AF_INET);
+ return dip_inaddr(ads,
+ ap->addrs[0].addr.inet.sin_addr,
+ bp->addrs[0].addr.inet.sin_addr);
+}
+
+static int di_hostaddr(adns_state ads,
+ const void *datap_a, const void *datap_b) {
+ const adns_rr_hostaddr *ap= datap_a, *bp= datap_b;
+
+ return dip_hostaddr(ads, ap,bp);
+}
+
+static void mfp_hostaddr(adns_query qu, adns_rr_hostaddr *rrp) {
+ void *tablev;
+
+ adns__makefinal_str(qu,&rrp->host);
+ tablev= rrp->addrs;
+ adns__makefinal_block(qu, &tablev, rrp->naddrs*sizeof(*rrp->addrs));
+ rrp->addrs= tablev;
+}
+
+static void mf_hostaddr(adns_query qu, void *datap) {
+ adns_rr_hostaddr *rrp= datap;
+
+ mfp_hostaddr(qu,rrp);
+}
+
+static adns_status csp_hostaddr(vbuf *vb, const adns_rr_hostaddr *rrp) {
+ const char *errstr;
+ adns_status st;
+ char buf[20];
+ int i;
+
+ st= csp_domain(vb,rrp->host); if (st) return st;
+
+ CSP_ADDSTR(" ");
+ CSP_ADDSTR(adns_errtypeabbrev(rrp->astatus));
+
+ sprintf(buf," %d ",rrp->astatus);
+ CSP_ADDSTR(buf);
+
+ CSP_ADDSTR(adns_errabbrev(rrp->astatus));
+ CSP_ADDSTR(" ");
+
+ errstr= adns_strerror(rrp->astatus);
+ st= csp_qstring(vb,errstr,strlen(errstr)); if (st) return st;
+
+ if (rrp->naddrs >= 0) {
+ CSP_ADDSTR(" (");
+ for (i=0; i<rrp->naddrs; i++) {
+ CSP_ADDSTR(" ");
+ st= csp_addr(vb,&rrp->addrs[i]);
+ }
+ CSP_ADDSTR(" )");
+ } else {
+ CSP_ADDSTR(" ?");
+ }
+ return adns_s_ok;
+}
+
+static adns_status cs_hostaddr(vbuf *vb, const void *datap) {
+ const adns_rr_hostaddr *rrp= datap;
+
+ return csp_hostaddr(vb,rrp);
+}
+
+/*
+ * _mx_raw (pa,di)
+ */
+
+static adns_status pa_mx_raw(const parseinfo *pai, int cbyte,
+ int max, void *datap) {
+ const byte *dgram= pai->dgram;
+ adns_rr_intstr *rrp= datap;
+ adns_status st;
+ int pref;
+
+ if (cbyte+2 > max) return adns_s_invaliddata;
+ GET_W(cbyte,pref);
+ rrp->i= pref;
+ st= pap_domain(pai, &cbyte, max, &rrp->str,
+ pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
+ if (st) return st;
+
+ if (cbyte != max) return adns_s_invaliddata;
+ return adns_s_ok;
+}
+
+static int di_mx_raw(adns_state ads, const void *datap_a, const void *datap_b) {
+ const adns_rr_intstr *ap= datap_a, *bp= datap_b;
+
+ if (ap->i < bp->i) return 0;
+ if (ap->i > bp->i) return 1;
+ return 0;
+}
+
+/*
+ * _mx (pa,di)
+ */
+
+static adns_status pa_mx(const parseinfo *pai, int cbyte,
+ int max, void *datap) {
+ const byte *dgram= pai->dgram;
+ adns_rr_inthostaddr *rrp= datap;
+ adns_status st;
+ int pref;
+
+ if (cbyte+2 > max) return adns_s_invaliddata;
+ GET_W(cbyte,pref);
+ rrp->i= pref;
+ st= pap_hostaddr(pai, &cbyte, max, &rrp->ha);
+ if (st) return st;
+
+ if (cbyte != max) return adns_s_invaliddata;
+ return adns_s_ok;
+}
+
+static int di_mx(adns_state ads, const void *datap_a, const void *datap_b) {
+ const adns_rr_inthostaddr *ap= datap_a, *bp= datap_b;
+
+ if (ap->i < bp->i) return 0;
+ if (ap->i > bp->i) return 1;
+ return dip_hostaddr(ads, &ap->ha, &bp->ha);
+}
+
+/*
+ * _inthostaddr (mf,cs)
+ */
+
+static void mf_inthostaddr(adns_query qu, void *datap) {
+ adns_rr_inthostaddr *rrp= datap;
+
+ mfp_hostaddr(qu,&rrp->ha);
+}
+
+static adns_status cs_inthostaddr(vbuf *vb, const void *datap) {
+ const adns_rr_inthostaddr *rrp= datap;
+ char buf[10];
+
+ sprintf(buf,"%u ",rrp->i);
+ CSP_ADDSTR(buf);
+
+ return csp_hostaddr(vb,&rrp->ha);
+}
+
+/*
+ * _inthost (cs)
+ */
+
+static adns_status cs_inthost(vbuf *vb, const void *datap) {
+ const adns_rr_intstr *rrp= datap;
+ char buf[10];
+
+ sprintf(buf,"%u ",rrp->i);
+ CSP_ADDSTR(buf);
+ return csp_domain(vb,rrp->str);
+}
+
+/*
+ * _ptr (pa, +icb_ptr)
+ */
+
+static void icb_ptr(adns_query parent, adns_query child) {
+ adns_answer *cans= child->answer;
+ const adns_rr_addr *queried, *found;
+ adns_state ads= parent->ads;
+ int i;
+
+ if (cans->status == adns_s_nxdomain || cans->status == adns_s_nodata) {
+ adns__query_fail(parent,adns_s_inconsistent);
+ return;
+ } else if (cans->status) {
+ adns__query_fail(parent,cans->status);
+ return;
+ }
+
+ queried= &parent->ctx.info.ptr_parent_addr;
+ for (i=0, found=cans->rrs.addr; i<cans->nrrs; i++, found++) {
+ if (queried->len == found->len &&
+ !memcmp(&queried->addr,&found->addr,queried->len)) {
+ if (!parent->children.head) {
+ adns__query_done(parent);
+ return;
+ } else {
+ LIST_LINK_TAIL(ads->childw,parent);
+ return;
+ }
+ }
+ }
+
+ adns__query_fail(parent,adns_s_inconsistent);
+}
+
+static adns_status pa_ptr(const parseinfo *pai, int dmstart,
+ int max, void *datap) {
+ static const char *(expectdomain[])= { DNS_INADDR_ARPA };
+
+ char **rrp= datap;
+ adns_status st;
+ adns_rr_addr *ap;
+ findlabel_state fls;
+ char *ep;
+ byte ipv[4];
+ char labbuf[4];
+ int cbyte, i, lablen, labstart, l, id;
+ adns_query nqu;
+ qcontext ctx;
+
+ cbyte= dmstart;
+ st= pap_domain(pai, &cbyte, max, rrp,
+ pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
+ if (st) return st;
+ if (cbyte != max) return adns_s_invaliddata;
+
+ ap= &pai->qu->ctx.info.ptr_parent_addr;
+ if (!ap->len) {
+ adns__findlabel_start(&fls, pai->ads, -1, pai->qu,
+ pai->qu->query_dgram, pai->qu->query_dglen,
+ pai->qu->query_dglen, DNS_HDRSIZE, 0);
+ for (i=0; i<4; i++) {
+ st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st);
+ if (lablen<=0 || lablen>3) return adns_s_querydomainwrong;
+ memcpy(labbuf, pai->qu->query_dgram + labstart, lablen);
+ labbuf[lablen]= 0;
+ ipv[3-i]= strtoul(labbuf,&ep,10);
+ if (*ep) return adns_s_querydomainwrong;
+ if (lablen>1 && pai->qu->query_dgram[labstart]=='0')
+ return adns_s_querydomainwrong;
+ }
+ for (i=0; i<sizeof(expectdomain)/sizeof(*expectdomain); i++) {
+ st= adns__findlabel_next(&fls,&lablen,&labstart); assert(!st);
+ l= strlen(expectdomain[i]);
+ if (lablen != l ||
+ memcmp(pai->qu->query_dgram + labstart, expectdomain[i], l))
+ return adns_s_querydomainwrong;
+ }
+ st= adns__findlabel_next(&fls,&lablen,0); assert(!st);
+ if (lablen) return adns_s_querydomainwrong;
+
+ ap->len= sizeof(struct sockaddr_in);
+ memset(&ap->addr,0,sizeof(ap->addr.inet));
+ ap->addr.inet.sin_family= AF_INET;
+ ap->addr.inet.sin_addr.s_addr=
+ htonl((ipv[0]<<24) | (ipv[1]<<16) | (ipv[2]<<8) | (ipv[3]));
+ }
+
+ st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id,
+ pai->dgram, pai->dglen, dmstart,
+ adns_r_addr, adns_qf_quoteok_query);
+ if (st) return st;
+
+ ctx.ext= 0;
+ ctx.callback= icb_ptr;
+ memset(&ctx.info,0,sizeof(ctx.info));
+ st= adns__internal_submit(pai->ads, &nqu, adns__findtype(adns_r_addr),
+ &pai->qu->vb, id,
+ adns_qf_quoteok_query, pai->now, &ctx);
+ if (st) return st;
+
+ nqu->parent= pai->qu;
+ LIST_LINK_TAIL_PART(pai->qu->children,nqu,siblings.);
+ return adns_s_ok;
+}
+
+/*
+ * _strpair (mf)
+ */
+
+static void mf_strpair(adns_query qu, void *datap) {
+ adns_rr_strpair *rrp= datap;
+
+ adns__makefinal_str(qu,&rrp->array[0]);
+ adns__makefinal_str(qu,&rrp->array[1]);
+}
+
+/*
+ * _intstrpair (mf)
+ */
+
+static void mf_intstrpair(adns_query qu, void *datap) {
+ adns_rr_intstrpair *rrp= datap;
+
+ adns__makefinal_str(qu,&rrp->array[0].str);
+ adns__makefinal_str(qu,&rrp->array[1].str);
+}
+
+/*
+ * _hinfo (pa)
+ */
+
+static adns_status pa_hinfo(const parseinfo *pai, int cbyte,
+ int max, void *datap) {
+ adns_rr_intstrpair *rrp= datap;
+ adns_status st;
+ int i;
+
+ for (i=0; i<2; i++) {
+ st= pap_qstring(pai, &cbyte, max, &rrp->array[i].i, &rrp->array[i].str);
+ if (st) return st;
+ }
+
+ if (cbyte != max) return adns_s_invaliddata;
+
+ return adns_s_ok;
+}
+
+/*
+ * _mailbox (pap,cs)
+ */
+
+static adns_status pap_mailbox822(const parseinfo *pai,
+ int *cbyte_io, int max, char **mb_r) {
+ int lablen, labstart, i, needquote, c, r, neednorm;
+ const unsigned char *p;
+ char *str;
+ findlabel_state fls;
+ adns_status st;
+ vbuf *vb;
+
+ vb= &pai->qu->vb;
+ vb->used= 0;
+ adns__findlabel_start(&fls, pai->ads,
+ -1, pai->qu,
+ pai->dgram, pai->dglen, max,
+ *cbyte_io, cbyte_io);
+ st= adns__findlabel_next(&fls,&lablen,&labstart);
+ if (!lablen) {
+ adns__vbuf_appendstr(vb,".");
+ goto x_ok;
+ }
+
+ neednorm= 1;
+ for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++) {
+ c= *p++;
+ if ((c&~128) < 32 || (c&~128) == 127) return adns_s_invaliddata;
+ if (c == '.' && !neednorm) neednorm= 1;
+ else if (c==' ' || c>=127 || ctype_822special(c)) needquote++;
+ else neednorm= 0;
+ }
+
+ if (needquote || neednorm) {
+ r= adns__vbuf_ensure(vb, lablen+needquote+4); if (!r) R_NOMEM;
+ adns__vbuf_appendq(vb,"\"",1);
+ for (i=0, needquote=0, p= pai->dgram+labstart; i<lablen; i++, p++) {
+ c= *p;
+ if (c == '"' || c=='\\') adns__vbuf_appendq(vb,"\\",1);
+ adns__vbuf_appendq(vb,p,1);
+ }
+ adns__vbuf_appendq(vb,"\"",1);
+ } else {
+ r= adns__vbuf_append(vb, pai->dgram+labstart, lablen); if (!r) R_NOMEM;
+ }
+
+ r= adns__vbuf_appendstr(vb,"@"); if (!r) R_NOMEM;
+
+ st= adns__parse_domain_more(&fls,pai->ads, pai->qu,vb,0, pai->dgram);
+ if (st) return st;
+
+ x_ok:
+ str= adns__alloc_interim(pai->qu, vb->used+1); if (!str) R_NOMEM;
+ memcpy(str,vb->buf,vb->used);
+ str[vb->used]= 0;
+ *mb_r= str;
+ return adns_s_ok;
+}
+
+static adns_status pap_mailbox(const parseinfo *pai, int *cbyte_io, int max,
+ char **mb_r) {
+ if (pai->qu->typei->type & adns__qtf_mail822) {
+ return pap_mailbox822(pai, cbyte_io, max, mb_r);
+ } else {
+ return pap_domain(pai, cbyte_io, max, mb_r, pdf_quoteok);
+ }
+}
+
+static adns_status csp_mailbox(vbuf *vb, const char *mailbox) {
+ return csp_domain(vb,mailbox);
+}
+
+/*
+ * _rp (pa,cs)
+ */
+
+static adns_status pa_rp(const parseinfo *pai, int cbyte,
+ int max, void *datap) {
+ adns_rr_strpair *rrp= datap;
+ adns_status st;
+
+ st= pap_mailbox(pai, &cbyte, max, &rrp->array[0]);
+ if (st) return st;
+
+ st= pap_domain(pai, &cbyte, max, &rrp->array[1], pdf_quoteok);
+ if (st) return st;
+
+ if (cbyte != max) return adns_s_invaliddata;
+ return adns_s_ok;
+}
+
+static adns_status cs_rp(vbuf *vb, const void *datap) {
+ const adns_rr_strpair *rrp= datap;
+ adns_status st;
+
+ st= csp_mailbox(vb,rrp->array[0]); if (st) return st;
+ CSP_ADDSTR(" ");
+ st= csp_domain(vb,rrp->array[1]); if (st) return st;
+
+ return adns_s_ok;
+}
+
+/*
+ * _soa (pa,mf,cs)
+ */
+
+static adns_status pa_soa(const parseinfo *pai, int cbyte,
+ int max, void *datap) {
+ adns_rr_soa *rrp= datap;
+ const byte *dgram= pai->dgram;
+ adns_status st;
+ int msw, lsw, i;
+
+ st= pap_domain(pai, &cbyte, max, &rrp->mname,
+ pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
+ if (st) return st;
+
+ st= pap_mailbox(pai, &cbyte, max, &rrp->rname);
+ if (st) return st;
+
+ if (cbyte+20 != max) return adns_s_invaliddata;
+
+ for (i=0; i<5; i++) {
+ GET_W(cbyte,msw);
+ GET_W(cbyte,lsw);
+ (&rrp->serial)[i]= (msw<<16) | lsw;
+ }
+
+ return adns_s_ok;
+}
+
+static void mf_soa(adns_query qu, void *datap) {
+ adns_rr_soa *rrp= datap;
+
+ adns__makefinal_str(qu,&rrp->mname);
+ adns__makefinal_str(qu,&rrp->rname);
+}
+
+static adns_status cs_soa(vbuf *vb, const void *datap) {
+ const adns_rr_soa *rrp= datap;
+ char buf[20];
+ int i;
+ adns_status st;
+
+ st= csp_domain(vb,rrp->mname); if (st) return st;
+ CSP_ADDSTR(" ");
+ st= csp_mailbox(vb,rrp->rname); if (st) return st;
+
+ for (i=0; i<5; i++) {
+ sprintf(buf," %lu",(&rrp->serial)[i]);
+ CSP_ADDSTR(buf);
+ }
+
+ return adns_s_ok;
+}
+
+/*
+ * _srv* (pa*2,di,cs*2,qdpl,postsort)
+ */
+
+static adns_status qdpl_srv(adns_state ads,
+ const char **p_io, const char *pe, int labelnum,
+ char label_r[DNS_MAXDOMAIN], int *ll_io,
+ adns_queryflags flags,
+ const typeinfo *typei) {
+ int useflags;
+ const char *p_orig;
+ adns_status st;
+
+ if (labelnum < 2 && !(flags & adns_qf_quoteok_query)) {
+ useflags= adns_qf_quoteok_query;
+ p_orig= *p_io;
+ } else {
+ useflags= flags;
+ p_orig= 0;
+ }
+ st= adns__qdpl_normal(ads, p_io,pe, labelnum,label_r, ll_io, useflags,typei);
+ if (st) return st;
+
+ if (p_orig) {
+ int ll= *ll_io;
+ if (!ll || label_r[0]!='_')
+ return adns_s_querydomaininvalid;
+ if (memchr(p_orig+1, '\\', pe - (p_orig+1)))
+ return adns_s_querydomaininvalid;
+ }
+ return adns_s_ok;
+}
+
+static adns_status pap_srv_begin(const parseinfo *pai, int *cbyte_io, int max,
+ adns_rr_srvha *rrp
+ /* might be adns_rr_srvraw* */) {
+ const byte *dgram= pai->dgram;
+ int ti, cbyte;
+
+ cbyte= *cbyte_io;
+ if ((*cbyte_io += 6) > max) return adns_s_invaliddata;
+
+ rrp->priority= GET_W(cbyte, ti);
+ rrp->weight= GET_W(cbyte, ti);
+ rrp->port= GET_W(cbyte, ti);
+ return adns_s_ok;
+}
+
+static adns_status pa_srvraw(const parseinfo *pai, int cbyte,
+ int max, void *datap) {
+ adns_rr_srvraw *rrp= datap;
+ adns_status st;
+
+ st= pap_srv_begin(pai,&cbyte,max,datap);
+ if (st) return st;
+
+ st= pap_domain(pai, &cbyte, max, &rrp->host,
+ pai->qu->flags & adns_qf_quoteok_anshost ? pdf_quoteok : 0);
+ if (st) return st;
+
+ if (cbyte != max) return adns_s_invaliddata;
+ return adns_s_ok;
+}
+
+static adns_status pa_srvha(const parseinfo *pai, int cbyte,
+ int max, void *datap) {
+ adns_rr_srvha *rrp= datap;
+ adns_status st;
+
+ st= pap_srv_begin(pai,&cbyte,max,datap); if (st) return st;
+ st= pap_hostaddr(pai, &cbyte, max, &rrp->ha); if (st) return st;
+ if (cbyte != max) return adns_s_invaliddata;
+ return adns_s_ok;
+}
+
+static void mf_srvraw(adns_query qu, void *datap) {
+ adns_rr_srvraw *rrp= datap;
+ adns__makefinal_str(qu, &rrp->host);
+}
+
+static void mf_srvha(adns_query qu, void *datap) {
+ adns_rr_srvha *rrp= datap;
+ mfp_hostaddr(qu,&rrp->ha);
+}
+
+static int di_srv(adns_state ads, const void *datap_a, const void *datap_b) {
+ const adns_rr_srvraw *ap= datap_a, *bp= datap_b;
+ /* might be const adns_rr_svhostaddr* */
+
+ if (ap->priority < bp->priority) return 0;
+ if (ap->priority > bp->priority) return 1;
+ return 0;
+}
+
+static adns_status csp_srv_begin(vbuf *vb, const adns_rr_srvha *rrp
+ /* might be adns_rr_srvraw* */) {
+ char buf[30];
+ sprintf(buf,"%u %u %u ", rrp->priority, rrp->weight, rrp->port);
+ CSP_ADDSTR(buf);
+ return adns_s_ok;
+}
+
+static adns_status cs_srvraw(vbuf *vb, const void *datap) {
+ const adns_rr_srvraw *rrp= datap;
+ adns_status st;
+
+ st= csp_srv_begin(vb,(const void*)rrp); if (st) return st;
+ return csp_domain(vb,rrp->host);
+}
+
+static adns_status cs_srvha(vbuf *vb, const void *datap) {
+ const adns_rr_srvha *rrp= datap;
+ adns_status st;
+
+ st= csp_srv_begin(vb,(const void*)datap); if (st) return st;
+ return csp_hostaddr(vb,&rrp->ha);
+}
+
+static void postsort_srv(adns_state ads, void *array, int nrrs,
+ const struct typeinfo *typei) {
+ /* we treat everything in the array as if it were an adns_rr_srvha
+ * even though the array might be of adns_rr_srvraw. That's OK
+ * because they have the same prefix, which is all we access.
+ * We use typei->rrsz, too, rather than naive array indexing, of course.
+ */
+ char *workbegin, *workend, *search, *arrayend;
+ const adns_rr_srvha *rr;
+ union { adns_rr_srvha ha; adns_rr_srvraw raw; } rrtmp;
+ int cpriority, totalweight, runtotal;
+ long randval;
+
+ for (workbegin= array, arrayend= workbegin + typei->rrsz * nrrs;
+ workbegin < arrayend;
+ workbegin= workend) {
+ cpriority= (rr=(void*)workbegin)->priority;
+
+ for (workend= workbegin, totalweight= 0;
+ workend < arrayend && (rr=(void*)workend)->priority == cpriority;
+ workend += typei->rrsz) {
+ totalweight += rr->weight;
+fprintf(stderr,"(postsort_srv priority %d weight %d)\n",
+ cpriority, rr->weight);
+ }
+
+ /* Now workbegin..(workend-1) incl. are exactly all of the RRs of
+ * cpriority. From now on, workbegin points to the `remaining'
+ * records: we select one record at a time (RFC2782 `Usage rules'
+ * and `Format of the SRV RR' subsection `Weight') to place at
+ * workbegin (swapping with the one that was there, and then
+ * advance workbegin. */
+ for (;
+ workbegin + typei->rrsz < workend; /* don't bother if just one */
+ workbegin += typei->rrsz) {
+
+ randval= nrand48(ads->rand48xsubi);
+ randval %= (totalweight + 1);
+fprintf(stderr,"(postsort_srv totalweight %d randval %ld %ld..%ld<%ld)\n",
+ totalweight,randval,
+ (unsigned long)(workbegin - (char*)array) / typei->rrsz,
+ (unsigned long)(workend - (char*)array) / typei->rrsz,
+ (unsigned long)(arrayend - (char*)array) / typei->rrsz
+ );
+ /* makes it into 0..totalweight inclusive; with 2^10 RRs,
+ * totalweight must be <= 2^26 so probability nonuniformity is
+ * no worse than 1 in 2^(31-26) ie 1 in 2^5, ie
+ * abs(log(P_intended(RR_i) / P_actual(RR_i)) <= log(2^-5).
+ */
+
+ for (search=workbegin, runtotal=0;
+ (runtotal += (rr=(void*)search)->weight) < randval;
+ search += typei->rrsz);
+fprintf(stderr,"(postsort_srv search %ld runtotal %d)\n",
+ (unsigned long)(search - (char*)array) / typei->rrsz,
+ runtotal
+ );
+ assert(search < arrayend);
+ totalweight -= rr->weight;
+ if (search != workbegin) {
+ memcpy(&rrtmp, workbegin, typei->rrsz);
+ memcpy(workbegin, search, typei->rrsz);
+ memcpy(search, &rrtmp, typei->rrsz);
+ }
+ }
+ }
+ /* tests:
+ * dig -t srv _srv._tcp.test.iwj.relativity.greenend.org.uk.
+ * ./adnshost_s -t srv- _sip._udp.voip.net.cam.ac.uk.
+ * ./adnshost_s -t srv- _jabber._tcp.jabber.org
+ */
+}
+
+/*
+ * _flat (mf)
+ */
+
+static void mf_flat(adns_query qu, void *data) { }
+
+/*
+ * Now the table.
+ */
+
+#define TYPESZ_M(member) (sizeof(*((adns_answer*)0)->rrs.member))
+
+#define DEEP_MEMB(memb) TYPESZ_M(memb), mf_##memb, cs_##memb
+#define FLAT_MEMB(memb) TYPESZ_M(memb), mf_flat, cs_##memb
+
+#define DEEP_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \
+ { adns_r_##code, rrt,fmt,TYPESZ_M(memb), mf_##memb, \
+ printer,parser,comparer, adns__qdpl_normal,0 }
+#define FLAT_TYPE(code,rrt,fmt,memb,parser,comparer,printer) \
+ { adns_r_##code, rrt,fmt,TYPESZ_M(memb), mf_flat, \
+ printer,parser,comparer, adns__qdpl_normal,0 }
+#define XTRA_TYPE(code,rrt,fmt,memb,parser,comparer,printer,qdpl,postsort) \
+ { adns_r_##code, rrt,fmt,TYPESZ_M(memb), mf_##memb, \
+ printer,parser,comparer,qdpl,postsort }
+