int
dname_compare(const void *vleft, const void *vright)
{
const dname_type* left = (const dname_type*) vleft;
const dname_type* right = (const dname_type*) vright;
int result;
uint8_t label_count;
uint8_t i;
assert(left);
assert(right);
if (left == right) {
return 0;
}
label_count = (left->label_count <= right->label_count
? left->label_count
: right->label_count);
/* Skip the root label by starting at label 1. */
for (i = 1; i < label_count; ++i) {
result = label_compare(dname_label(left, i),
dname_label(right, i));
if (result) {
return result;
}
}
/* Dname with the fewest labels is "first". */
return (int) left->label_count - (int) right->label_count;
}
int
dname_is_subdomain(const dname_type *left, const dname_type *right)
{
uint8_t i;
if (left->label_count < right->label_count)
return 0;
for (i = 1; i < right->label_count; ++i) {
if (label_compare(dname_label(left, i),
dname_label(right, i)) != 0)
return 0;
}
return 1;
}
uint8_t
dname_label_match_count(const dname_type *left, const dname_type *right)
{
uint8_t i;
assert(left);
assert(right);
for (i = 1; i < left->label_count && i < right->label_count; ++i) {
if (label_compare(dname_label(left, i),
dname_label(right, i)) != 0)
{
return i;
}
}
return i;
}
/* get end label of the zone name (or .) */
static const char*
get_end_label(zone_options_t* zone, int i)
{
const dname_type* d = (const dname_type*)zone->node.key;
if(i >= d->label_count) {
return ".";
}
return wirelabel2str(dname_label(d, i));
}
const dname_type *
dname_partial_copy(region_type *region, const dname_type *dname, uint8_t label_count)
{
if (!dname)
return NULL;
if (label_count == 0) {
/* Always copy the root label. */
label_count = 1;
}
assert(label_count <= dname->label_count);
return dname_make(region, dname_label(dname, label_count - 1), 0);
}
