* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
+#include <stddef.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
+#include <netdb.h>
#include "internal.h"
* _txt (pa)
* _inaddr (pa,cs,di, +search_sortlist, dip_genaddr)
* _in6addr (pa,cs,di)
- * _addr (pa,di,csp,cs, +search_sortlist_sa, dip_sockaddr)
+ * _addr (pap,pa,di,csp,cs,qs, +search_sortlist_sa,
+ * dip_sockaddr, rrtypes)
* _domain (pap)
* _host_raw (pa)
* _hostaddr (pap,pa,dip,di,mfp,mf,csp,cs +pap_findaddrs)
static int di_in6addr(adns_state ads,
const void *datap_a, const void *datap_b) {
- return dip_genaddr(ads,AF_INET6,datap_a,AF_INET6,datap_b);
+ return dip_genaddr(ads,AF_INET6,datap_a,datap_b);
}
static adns_status cs_in6addr(vbuf *vb, const void *datap) {
}
/*
- * _addr (pa,di,csp,cs, +search_sortlist_sa, dip_sockaddr)
+ * _addr (pap,pa,di,csp,cs,qs, +search_sortlist_sa, dip_sockaddr,
+ * addr_rrtypes, addr_rrsz)
*/
-static adns_status pa_addr(const parseinfo *pai, int cbyte,
- int max, void *datap) {
- adns_rr_addr *storeto= datap;
+static adns_status pap_addr(const parseinfo *pai, int rrty, size_t rrsz,
+ int *cbyte_io, int max, adns_rr_addr *storeto)
+{
const byte *dgram= pai->dgram;
+ int af, addrlen, salen;
+ struct in6_addr v6map;
+ const void *oaddr = dgram + *cbyte_io;
+ int avail = max - *cbyte_io;
+ int step = -1;
+ void *addrp = 0;
+
+ switch (rrty) {
+ case adns_r_a:
+ if (pai->qu->flags & adns_qf_domapv4) {
+ if (avail < 4) return adns_s_invaliddata;
+ memset(v6map.s6_addr + 0, 0x00, 10);
+ memset(v6map.s6_addr + 10, 0xff, 2);
+ memcpy(v6map.s6_addr + 12, oaddr, 4);
+ oaddr = v6map.s6_addr; avail = sizeof(v6map.s6_addr);
+ if (step < 0) step = 4;
+ goto aaaa;
+ }
+ af = AF_INET; addrlen = 4;
+ addrp = &storeto->addr.inet.sin_addr;
+ salen = sizeof(storeto->addr.inet);
+ break;
+ case adns_r_aaaa:
+ aaaa:
+ af = AF_INET6; addrlen = 16;
+ addrp = storeto->addr.inet6.sin6_addr.s6_addr;
+ salen = sizeof(storeto->addr.inet6);
+ break;
+ }
+ assert(addrp);
+
+ assert(offsetof(adns_rr_addr, addr) + salen <= rrsz);
+ if (addrlen < avail) return adns_s_invaliddata;
+ if (step < 0) step = addrlen;
+ *cbyte_io += step;
+ memset(&storeto->addr, 0, salen);
+ storeto->len = salen;
+ storeto->addr.sa.sa_family = af;
+ memcpy(addrp, oaddr, addrlen);
- 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 adns_status pa_addr(const parseinfo *pai, int cbyte,
+ int max, void *datap) {
+ int err = pap_addr(pai, pai->qu->answer->type & adns_rrt_typemask,
+ pai->qu->answer->rrsz, &cbyte, max, datap);
+ if (err) return err;
+ if (cbyte != max) return adns_s_invaliddata;
return adns_s_ok;
}
static int search_sortlist_sa(adns_state ads, const struct sockaddr *sa)
{
- const struct afinfo *ai = 0;
+ const afinfo *ai = 0;
switch (sa->sa_family) {
case AF_INET: ai = &adns__inet_afinfo; break;
}
static adns_status csp_addr(vbuf *vb, const adns_rr_addr *rrp) {
- const char *ia;
- char buf[30];
+ char buf[128];
+ int err;
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);
+ goto ntop;
+ case AF_INET6:
+ CSP_ADDSTR("INET6 ");
+ goto ntop;
+ ntop:
+ err= getnameinfo(&rrp->addr.sa, rrp->len, buf, sizeof(buf), 0, 0,
+ NI_NUMERICHOST); assert(!err);
+ CSP_ADDSTR(buf);
break;
default:
sprintf(buf,"AF=%u",rrp->addr.sa.sa_family);
return csp_addr(vb,rrp);
}
+#define ADDR_MAXRRTYPES 2
+
+static void addr_rrtypes(adns_state ads, adns_rrtype type,
+ adns_queryflags qf,
+ adns_rrtype *rrty, size_t *nrrty)
+{
+ size_t n = 0;
+ adns_rrtype qtf = type & adns__qtf_deref;
+
+ if (!(type & adns__qtf_bigaddr) || !(type & adns__qtf_manyaf))
+ qf = (qf & adns__qf_afmask) | adns_qf_ipv4_only;
+
+ if (qf & adns_qf_ipv4_only) rrty[n++] = adns_r_a | qtf;
+ if (qf & adns_qf_ipv6_only) rrty[n++] = adns_r_aaaa | qtf;
+
+ *nrrty = n;
+}
+
+static size_t addr_rrsz(adns_query qu)
+{
+ return qu->answer->type & adns__qtf_bigaddr ?
+ sizeof(adns_rr_addr) : sizeof(adns_rr_addr_v4only);
+}
+
+static adns_status append_addrs(adns_query qu, size_t rrsz,
+ adns_rr_addr **dp, int *dlen,
+ const adns_rr_addr *sp, int slen)
+{
+ size_t drrsz = *dlen*rrsz, srrsz = slen*rrsz;
+ byte *p = adns__alloc_interim(qu, drrsz + srrsz);
+ if (!p) R_NOMEM;
+ if (*dlen) {
+ memcpy(p, *dp, drrsz);
+ adns__free_interim(qu, *dp);
+ }
+ memcpy(p + drrsz, sp, srrsz);
+ *dlen += slen;
+ *dp = (adns_rr_addr *)p;
+ return adns_s_ok;
+}
+
+static void icb_addr(adns_query parent, adns_query child)
+{
+ adns_state ads = parent->ads;
+ adns_answer *pans = parent->answer, *cans = child->answer;
+ struct timeval tvbuf;
+ adns_status err;
+ const struct timeval *now = 0;
+
+ /* Must handle CNAMEs correctly. This gets very hairy if the answers we
+ * get are inconsistent.
+ */
+
+ if ((parent->flags & adns_qf_search) &&
+ cans->status == adns_s_nxdomain) {
+ if (parent->expires > child->expires) parent->expires = child->expires;
+ adns__cancel_children(parent);
+ adns__free_interim(parent, pans->rrs.bytes);
+ pans->rrs.bytes = 0; pans->nrrs = 0;
+ adns__must_gettimeofday(ads, &now, &tvbuf);
+ if (now) adns__search_next(ads, parent, *now);
+ return;
+ }
+
+ if (cans->status && cans->status != adns_s_nodata) {
+ adns__query_fail(parent, cans->status);
+ return;
+ }
+
+ assert(pans->rrsz == cans->rrsz);
+ err = append_addrs(parent, pans->rrsz,
+ &pans->rrs.addr, &pans->nrrs,
+ cans->rrs.addr, cans->nrrs);
+ if (err) { adns__query_fail(parent, err); return; }
+
+ if (parent->expires > child->expires) parent->expires = child->expires;
+
+ if (parent->children.head) LIST_LINK_TAIL(ads->childw, parent);
+ else if (!pans->nrrs) adns__query_fail(parent, adns_s_nodata);
+ else adns__query_done(parent);
+}
+
+static void addr_subqueries(adns_query qu, struct timeval now,
+ const adns_rrtype *rrty, size_t nrrty)
+{
+ int i, err, id;
+ adns_query cqu;
+ adns_queryflags qf =
+ (qu->flags | adns__qf_senddirect) &
+ ~(adns_qf_search);
+ qcontext ctx;
+
+ if (!(qu->answer->type & adns__qtf_bigaddr))
+ qu->answer->rrsz = sizeof(adns_rr_addr_v4only);
+
+ /* This always makes child queries, even if there's only the one. This
+ * seems wasteful, but there's only one case where it'd be safe -- namely
+ * IPv4-only -- and that's not the case I want to optimize.
+ */
+ memset(&ctx, 0, sizeof(ctx));
+ ctx.callback = icb_addr;
+ for (i = 0; i < nrrty; i++) {
+ err = adns__mkquery_frdgram(qu->ads, &qu->vb, &id, qu->query_dgram,
+ qu->query_dglen, DNS_HDRSIZE, rrty[i], qf);
+ if (err) goto x_error;
+ err = adns__internal_submit(qu->ads, &cqu, qu->typei, rrty[i],
+ &qu->vb, id, qf, now, &ctx);
+ if (err) goto x_error;
+ cqu->answer->rrsz = qu->answer->rrsz;
+ cqu->parent = qu;
+ LIST_LINK_TAIL_PART(qu->children, cqu,siblings.);
+ }
+ qu->state = query_childw;
+ LIST_LINK_TAIL(qu->ads->childw, qu);
+ return;
+
+x_error:
+ adns__query_fail(qu, err);
+}
+
+static adns_status addr_submit(adns_query parent, adns_query *query_r,
+ vbuf *qumsg_vb, int id,
+ const adns_rrtype *rrty, size_t nrrty,
+ adns_queryflags flags, struct timeval now,
+ const qcontext *ctx)
+{
+ /* This is effectively a substitute for adns__internal_submit, intended for
+ * the case where the caller (possibly) only wants a subset of the
+ * available record types. The memory management and callback rules are
+ * the same as for adns__internal_submit.
+ *
+ * Some differences: the query is linked onto the parent's children list
+ * before exit (though the parent's state is not changed, and it is not
+ * linked into the childw list queue).
+ */
+
+ adns_state ads = parent->ads;
+ adns_status err;
+ adns_rrtype type =
+ (adns_r_addr & adns_rrt_reprmask) |
+ (parent->answer->type & ~adns_rrt_reprmask);
+
+ err = adns__internal_submit(ads, query_r, adns__findtype(adns_r_addr),
+ type, qumsg_vb, id, flags | adns__qf_nosend,
+ now, ctx);
+ if (err) return err;
+
+ (*query_r)->parent = parent;
+ LIST_LINK_TAIL_PART(parent->children, *query_r, siblings.);
+ addr_subqueries(*query_r, now, rrty, nrrty);
+ return adns_s_ok;
+}
+
+static void qs_addr(adns_query qu, struct timeval now)
+{
+ adns_rrtype rrty[ADDR_MAXRRTYPES];
+ size_t nrrty;
+
+ addr_rrtypes(qu->ads, qu->answer->type, qu->flags, rrty, &nrrty);
+ addr_subqueries(qu, now, rrty, nrrty);
+}
+
/*
* _domain (pap,csp,cs)
* _dom_raw (pa)
*/
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;
+ adns_rrtype *rrty, size_t *nrrty_io,
+ size_t addrsz, int *cbyte_io, int count,
+ int dmstart) {
+ int rri, naddrs, j;
+ int type, class, rdlen, rdend, rdstart, ownermatched;
+ size_t nrrty = *nrrty_io;
unsigned long ttl;
adns_status st;
- for (rri=0, naddrs=-1; rri<count; rri++) {
+ for (rri=0, naddrs=0; 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 (!ownermatched || class != DNS_CLASS_IN) continue;
+ for (j = 0; j < nrrty && type != (rrty[j] & adns_rrt_typemask); j++);
+ if (j >= nrrty) continue;
+ if (j < *nrrty_io) {
+ (*nrrty_io)--;
+ adns_rrtype t = rrty[j];
+ rrty[j] = rrty[*nrrty_io];
+ rrty[*nrrty_io] = t;
}
- if (!adns__vbuf_ensure(&pai->qu->vb, (naddrs+1)*sizeof(adns_rr_addr)))
- R_NOMEM;
+ if (!adns__vbuf_ensure(&pai->qu->vb, (naddrs+1)*addrsz)) 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));
+ rdend = rdstart + rdlen;
+ st= pap_addr(pai, type, addrsz, &rdstart, rdend,
+ (adns_rr_addr *)(pai->qu->vb.buf + naddrs*addrsz));
if (st) return st;
+ if (rdstart != rdend) return adns_s_invaliddata;
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;
+ if (naddrs > 0) {
+ st = append_addrs(pai->qu, addrsz, &ha->addrs, &ha->naddrs,
+ (const adns_rr_addr *)pai->qu->vb.buf, naddrs);
+ if (st) return st;
ha->astatus= adns_s_ok;
- adns__isort(ha->addrs, naddrs, sizeof(adns_rr_addr), pai->qu->vb.buf,
- div_addr, pai->ads);
+ if (!*nrrty_io) {
+ adns__isort(ha->addrs, naddrs, addrsz, pai->qu->vb.buf,
+ div_addr, pai->ads);
+ }
}
return adns_s_ok;
}
adns_rr_hostaddr *rrp= child->ctx.info.hostaddr;
adns_state ads= parent->ads;
adns_status st;
+ size_t addrsz = addr_rrsz(parent);
- st= cans->status;
+ st= cans->status == adns_s_nodata ? adns_s_ok : 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 (st) goto done;
+ assert(addrsz == cans->rrsz);
+ if (parent->expires > child->expires) parent->expires = child->expires;
+ st = append_addrs(parent, addrsz,
+ &rrp->addrs, &rrp->naddrs,
+ cans->rrs.addr, cans->nrrs);
+ if (st) goto done;
+ if (!rrp->naddrs) { st = adns_s_nodata; goto done; }
+
+ if (!adns__vbuf_ensure(&parent->vb, addrsz))
+ { st = adns_s_nomemory; goto done; }
+ adns__isort(rrp->addrs, rrp->naddrs, addrsz, parent->vb.buf,
+ div_addr, ads);
+
+done:
+ if (st) {
+ adns__free_interim(parent, rrp->addrs);
+ rrp->naddrs= (st>0 && st<=adns_s_max_tempfail) ? -1 : cans->nrrs;
+ }
if (parent->children.head) {
LIST_LINK_TAIL(ads->childw,parent);
int id;
adns_query nqu;
adns_queryflags nflags;
+ adns_rrtype rrty[ADDR_MAXRRTYPES];
+ size_t nrrty;
+ size_t addrsz = addr_rrsz(pai->qu);
dmstart= cbyte= *cbyte_io;
st= pap_domain(pai, &cbyte, max, &rrp->host,
*cbyte_io= cbyte;
rrp->astatus= adns_s_ok;
- rrp->naddrs= -1;
+ rrp->naddrs= 0;
rrp->addrs= 0;
cbyte= pai->nsstart;
- st= pap_findaddrs(pai, rrp, &cbyte, pai->nscount, dmstart);
+ addr_rrtypes(pai->ads, pai->qu->answer->type,
+ pai->qu->flags, rrty, &nrrty);
+
+ st= pap_findaddrs(pai, rrp, rrty, &nrrty, addrsz,
+ &cbyte, pai->nscount, dmstart);
if (st) return st;
- if (rrp->naddrs != -1) return adns_s_ok;
+ if (!nrrty) return adns_s_ok;
- st= pap_findaddrs(pai, rrp, &cbyte, pai->arcount, dmstart);
+ st= pap_findaddrs(pai, rrp, rrty, &nrrty, addrsz,
+ &cbyte, pai->arcount, dmstart);
if (st) return st;
- if (rrp->naddrs != -1) return adns_s_ok;
+ if (!nrrty) return adns_s_ok;
st= adns__mkquery_frdgram(pai->ads, &pai->qu->vb, &id,
pai->dgram, pai->dglen, dmstart,
ctx.callback= icb_hostaddr;
ctx.info.hostaddr= rrp;
- nflags= adns_qf_quoteok_query;
+ nflags= adns_qf_quoteok_query | (pai->qu->flags & adns__qf_afmask);
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);
+ st= addr_submit(pai->qu, &nqu, &pai->qu->vb, id, rrty, nrrty,
+ 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 void mfp_hostaddr(adns_query qu, adns_rr_hostaddr *rrp) {
void *tablev;
-
+ size_t sz = qu->answer->type & adns__qtf_bigaddr ?
+ sizeof(adns_rr_addr) : sizeof(adns_rr_addr_v4only);
adns__makefinal_str(qu,&rrp->host);
tablev= rrp->addrs;
- adns__makefinal_block(qu, &tablev, rrp->naddrs*sizeof(*rrp->addrs));
+ adns__makefinal_block(qu, &tablev, rrp->naddrs*sz);
rrp->addrs= tablev;
}
ctx.callback= icb_ptr;
memset(&ctx.info,0,sizeof(ctx.info));
st= adns__internal_submit(pai->ads, &nqu, adns__findtype(ap->ai->rrtype),
- &pai->qu->vb, id,
+ ap->ai->rrtype, &pai->qu->vb, id,
adns_qf_quoteok_query, pai->now, &ctx);
if (st) return st;
#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 }
+{ adns_r_##code & adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), \
+ mf_##memb, printer,parser,comparer, adns__qdpl_normal,0,0 }
#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 }
+{ adns_r_##code & adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), \
+ mf_flat, printer,parser,comparer, adns__qdpl_normal,0,0 }
+#define XTRA_TYPE(code,rrt,fmt,memb,parser,comparer,printer, \
+ makefinal,qdpl,postsort,sender) \
+{ adns_r_##code & adns_rrt_reprmask, rrt,fmt,TYPESZ_M(memb), makefinal, \
+ printer,parser,comparer,qdpl,postsort,sender }
static const typeinfo typeinfos[] = {
/* Must be in ascending order of rrtype ! */
DEEP_TYPE(rp_raw, "RP", "raw",strpair, pa_rp, 0, cs_rp ),
FLAT_TYPE(aaaa, "AAAA", 0, in6addr, pa_in6addr, di_in6addr,cs_in6addr ),
XTRA_TYPE(srv_raw,"SRV", "raw",srvraw , pa_srvraw, di_srv, cs_srvraw,
- qdpl_srv, postsort_srv),
+ mf_srvraw, qdpl_srv, postsort_srv, 0),
-FLAT_TYPE(addr, "A", "addr", addr, pa_addr, di_addr, cs_addr ),
+XTRA_TYPE(addr, "A", "addr", addr, pa_addr, di_addr, cs_addr,
+ mf_flat, adns__qdpl_normal, 0, qs_addr),
DEEP_TYPE(ns, "NS", "+addr",hostaddr,pa_hostaddr,di_hostaddr,cs_hostaddr ),
DEEP_TYPE(ptr, "PTR","checked",str, pa_ptr, 0, cs_domain ),
DEEP_TYPE(mx, "MX", "+addr",inthostaddr,pa_mx, di_mx, cs_inthostaddr),
XTRA_TYPE(srv, "SRV","+addr",srvha, pa_srvha, di_srv, cs_srvha,
- qdpl_srv, postsort_srv),
+ mf_srvha, qdpl_srv, postsort_srv, 0),
DEEP_TYPE(soa, "SOA","822", soa, pa_soa, 0, cs_soa ),
DEEP_TYPE(rp, "RP", "822", strpair, pa_rp, 0, cs_rp ),
const typeinfo *begin, *end, *mid;
if (type & adns_r_unknown) return &typeinfo_unknown;
+ type &= adns_rrt_reprmask;
begin= typeinfos; end= typeinfos+(sizeof(typeinfos)/sizeof(typeinfo));
~mdw / adns / blobdiff