Esempio n. 1
0
// Unmarshal decodes raw data into a *Node instance.
// The conversion uses an intermediate PBNode.
func (n *Node) Unmarshal(encoded []byte) error {
	var pbn pb.PBNode
	if err := pbn.Unmarshal(encoded); err != nil {
		return fmt.Errorf("Unmarshal failed. %v", err)
	}

	pbnl := pbn.GetLinks()
	n.Links = make([]*Link, len(pbnl))
	for i, l := range pbnl {
		n.Links[i] = &Link{Name: l.GetName(), Size: l.GetTsize()}
		h, err := mh.Cast(l.GetHash())
		if err != nil {
			return fmt.Errorf("Link hash is not valid multihash. %v", err)
		}
		n.Links[i].Hash = h
	}

	n.Data = pbn.GetData()
	return nil
}
Esempio n. 2
0
// Resolve implements Resolver
// TXT records for a given domain name should contain a b58
// encoded multihash.
func (r *DNSResolver) Resolve(name string) (string, error) {
	log.Info("DNSResolver resolving %v", name)
	txt, err := net.LookupTXT(name)
	if err != nil {
		return "", err
	}

	for _, t := range txt {
		chk := b58.Decode(t)
		if len(chk) == 0 {
			continue
		}

		_, err := mh.Cast(chk)
		if err != nil {
			continue
		}
		return t, nil
	}

	return "", ErrResolveFailed
}