func (bc *BtcCred) SignOcReq(req *msg.OcReq, conf *util.BitcoindConf) error {
h, err := getReqSigDataHash(req)
if err != nil {
return err
}
hb64 := base64.StdEncoding.EncodeToString(h)
msg, err := btcjson.NewSignMessageCmd(nil, bc.Addr, hb64)
if err != nil {
return fmt.Errorf("error while making cmd: %v", err.Error())
}
json, err := msg.MarshalJSON()
if err != nil {
return fmt.Errorf("error while marshaling: %v", err.Error())
}
resp, err := btcjson.RpcCommand(conf.User, conf.Password, conf.Server, json)
if err != nil {
return fmt.Errorf("error while making bitcoind JSON-RPC: %v", err.Error())
}
sig, ok := resp.Result.(string)
if !ok {
return errors.New("error during bitcoind JSON-RPC")
}
req.Coins = append(req.Coins, fmt.Sprintf(bc.Addr))
req.CoinSigs = append(req.CoinSigs, fmt.Sprintf(sig))
return nil
}
func verifyBtcSig(reqHash []byte, addr string, sig string, conf *util.BitcoindConf) (bool, error) {
hb64 := base64.StdEncoding.EncodeToString(reqHash)
msg, err := btcjson.NewVerifyMessageCmd(nil, addr, sig, hb64)
if err != nil {
return false, fmt.Errorf("error while making cmd: %v", err.Error())
}
json, err := msg.MarshalJSON()
if err != nil {
return false, fmt.Errorf("error while marshaling: %v", err.Error())
}
resp, err := btcjson.RpcCommand(conf.User, conf.Password, conf.Server, json)
if err != nil {
return false, fmt.Errorf(
"error while making bitcoind JSON-RPC: %v", err.Error())
}
if resp.Error != nil {
return false, resp.Error
}
verifyResult, ok := resp.Result.(bool)
if !ok {
return false, fmt.Errorf("error during bitcoind JSON-RPC: %v", err.Error())
}
return verifyResult, nil
}
func getAnyBtcAddr(conf *util.BitcoindConf) (string, error) {
msg, err := btcjson.NewListReceivedByAddressCmd(nil, 0, true)
if err != nil {
return "", err
}
json, err := msg.MarshalJSON()
if err != nil {
return "", err
}
resp, err := btcjson.RpcCommand(conf.User, conf.Password, conf.Server, json)
if err != nil {
return "", err
}
for _, r := range resp.Result.([]interface{}) {
result := r.(map[string]interface{})
return result["address"].(string), nil
}
return "", errors.New("no address found")
}