#include <resolv.h>
#include <string.h>

int res_querydomain(const char* name, const char* domain, int class, int type, unsigned char* dest,
                    int len) {
    char tmp[255];
    size_t nl = strnlen(name, 255);
    size_t dl = strnlen(domain, 255);
    if (nl + dl + 1 > 254)
        return -1;
    memcpy(tmp, name, nl);
    tmp[nl] = '.';
    memcpy(tmp + nl + 1, domain, dl + 1);
    return res_query(tmp, class, type, dest, len);
}