/** test dname_is_wild routine */
static void
dname_test_iswild(void)
{
unit_show_func("util/data/dname.c", "dname_iswild");
unit_assert( !dname_is_wild((uint8_t*)"\000") );
unit_assert( dname_is_wild((uint8_t*)"\001*\000") );
unit_assert( !dname_is_wild((uint8_t*)"\003net\000") );
unit_assert( dname_is_wild((uint8_t*)"\001*\003net\000") );
}
int
val_rrset_wildcard(struct ub_packed_rrset_key* rrset, uint8_t** wc)
{
struct packed_rrset_data* d = (struct packed_rrset_data*)rrset->
entry.data;
uint8_t labcount;
int labdiff;
uint8_t* wn;
size_t i, wl;
if(d->rrsig_count == 0) {
return 1;
}
labcount = rrsig_get_labcount(d, d->count + 0);
/* check rest of signatures identical */
for(i=1; i<d->rrsig_count; i++) {
if(labcount != rrsig_get_labcount(d, d->count + i)) {
return 0;
}
}
/* OK the rrsigs check out */
/* if the RRSIG label count is shorter than the number of actual
* labels, then this rrset was synthesized from a wildcard.
* Note that the RRSIG label count doesn't count the root label. */
wn = rrset->rk.dname;
wl = rrset->rk.dname_len;
/* skip a leading wildcard label in the dname (RFC4035 2.2) */
if(dname_is_wild(wn)) {
wn += 2;
wl -= 2;
}
labdiff = (dname_count_labels(wn) - 1) - (int)labcount;
if(labdiff > 0) {
*wc = wn;
dname_remove_labels(wc, &wl, labdiff);
return 1;
}
return 1;
}
