// procUID allows to process a sender UID from the header in parallel.
// senderUID is the JSON encoded UID message parsed from the header, res is
// the result channel used to communicate the result of the calculation.
func procUID(senderUID string, res chan *procUIDResult) {
var r procUIDResult
var err error
r.uidIndex = cipher.SHA256(cipher.SHA256([]byte(senderUID)))
r.msg, err = uid.NewJSON(senderUID)
if err != nil {
res <- &procUIDResult{uidIndex: nil, msg: nil, err: err}
return
}
// return results
res <- &r
}
// GetPrivateUID gets a private uid for identity from keyDB.
//
// TODO: get all UID messages for given identity which are not expired.
func (keyDB *KeyDB) GetPrivateUID(
identity string,
withPrivkeys bool,
) (*uid.Message, *uid.MessageReply, error) {
var (
uidJSON string
sigPrivKey string
encPrivKey string
replyJSON string
)
err := keyDB.getPrivateUIDQuery.QueryRow(identity).Scan(&uidJSON, &sigPrivKey, &encPrivKey, &replyJSON)
switch {
case err == sql.ErrNoRows:
return nil, nil, log.Errorf("keydb: no privkey for nym '%s' found", identity)
case err != nil:
return nil, nil, log.Error(err)
default:
msg, err := uid.NewJSON(uidJSON)
if err != nil {
return nil, nil, err
}
if err := msg.VerifySelfSig(); err != nil {
// if this fails something is seriously wrong
return nil, nil, log.Error(err)
}
if withPrivkeys {
if err := msg.SetPrivateSigKey(sigPrivKey); err != nil {
return nil, nil, err
}
if err := msg.SetPrivateEncKey(encPrivKey); err != nil {
return nil, nil, err
}
}
var msgReply *uid.MessageReply
if replyJSON != "" {
msgReply, err = uid.NewJSONReply(replyJSON)
if err != nil {
return nil, nil, err
}
}
return msg, msgReply, nil
}
}
// GetPublicUID gets the public UID message from keyDB with the highest
// position smaller or equal to maxpos.
func (keyDB *KeyDB) GetPublicUID(
identity string,
maxpos uint64,
) (msg *uid.Message, pos uint64, found bool, err error) {
var uidJSON string
err = keyDB.getPublicUIDQuery.QueryRow(identity, maxpos).Scan(&uidJSON, &pos)
switch {
case err == sql.ErrNoRows:
return nil, 0, false, nil
case err != nil:
return nil, 0, false, log.Error(err)
default:
msg, err = uid.NewJSON(uidJSON)
if err != nil {
return nil, 0, false, err
}
found = true
return
}
}