#include <resolv.h>

int dn_skipname(const unsigned char* s, const unsigned char* end) {
  const unsigned char* p;
  for (p = s; p < end; p++)
    if (!*p)
      return p - s + 1;
    else if (*p >= 192) {
      if (p + 1 < end)
        return p - s + 2;
      else
        break;
    }
  return -1;
}