ns_samename
int ns_samename(const char *, const char *);
if (origin != NULL && ns_samename(name, origin) == 1)
if (name_ctx != NULL && ns_samename(name_ctx, name) == 1) {
return (ns_samename(a, b) != 1 && ns_samedomain(a, b));
if (ns_samename(buf, name) == 1) {
ns_samename(tname, name) == 1)