func (dht *IpfsDHT) verifyRecord(r *pb.Record) error {
// First, validate the signature
p, err := dht.peerstore.Get(peer.ID(r.GetAuthor()))
if err != nil {
return err
}
k := u.Key(r.GetKey())
blob := bytes.Join([][]byte{[]byte(k),
r.GetValue(),
[]byte(r.GetAuthor())}, []byte{})
ok, err := p.PubKey().Verify(blob, r.GetSignature())
if err != nil {
log.Error("Signature verify failed.")
return err
}
if !ok {
return ErrBadRecord
}
// Now, check validity func
parts := strings.Split(r.GetKey(), "/")
if len(parts) < 3 {
log.Errorf("Record had bad key: %s", u.Key(r.GetKey()))
return ErrBadRecord
}
fnc, ok := dht.Validators[parts[1]]
if !ok {
log.Errorf("Unrecognized key prefix: %s", parts[1])
return ErrInvalidRecordType
}
return fnc(u.Key(r.GetKey()), r.GetValue())
}
