package rpc import ( "encoding/hex" "fmt" "github.com/CityOfZion/neo-go/pkg/core/transaction" "github.com/CityOfZion/neo-go/pkg/crypto/keys" "github.com/CityOfZion/neo-go/pkg/smartcontract" "github.com/CityOfZion/neo-go/pkg/util" "github.com/pkg/errors" ) // getBlock returns a block by its hash or index/height. If verbose is true // the response will contain a pretty Block object instead of the raw hex string. // missing output wrapper at the moment, thus commented out // func (c *Client) getBlock(indexOrHash interface{}, verbose bool) (*response, error) { // var ( // params = newParams(indexOrHash) // resp = &response{} // ) // if verbose { // params = newParams(indexOrHash, 1) // } // if err := c.performRequest("getblock", params, resp); err != nil { // return nil, err // } // return resp, nil // } // GetAccountState returns detailed information about a NEO account. func (c *Client) GetAccountState(address string) (*AccountStateResponse, error) { var ( params = newParams(address) resp = &AccountStateResponse{} ) if err := c.performRequest("getaccountstate", params, resp); err != nil { return nil, err } return resp, nil } // GetUnspents returns UTXOs for the given NEO account. func (c *Client) GetUnspents(address string) (*UnspentResponse, error) { var ( params = newParams(address) resp = &UnspentResponse{} ) if err := c.performRequest("getunspents", params, resp); err != nil { return nil, err } return resp, nil } // InvokeScript returns the result of the given script after running it true the VM. // NOTE: This is a test invoke and will not affect the blockchain. func (c *Client) InvokeScript(script string) (*InvokeScriptResponse, error) { var ( params = newParams(script) resp = &InvokeScriptResponse{} ) if err := c.performRequest("invokescript", params, resp); err != nil { return nil, err } return resp, nil } // InvokeFunction returns the results after calling the smart contract scripthash // with the given operation and parameters. // NOTE: this is test invoke and will not affect the blockchain. func (c *Client) InvokeFunction(script, operation string, params []smartcontract.Parameter) (*InvokeScriptResponse, error) { var ( p = newParams(script, operation, params) resp = &InvokeScriptResponse{} ) if err := c.performRequest("invokefunction", p, resp); err != nil { return nil, err } return resp, nil } // Invoke returns the results after calling the smart contract scripthash // with the given parameters. func (c *Client) Invoke(script string, params []smartcontract.Parameter) (*InvokeScriptResponse, error) { var ( p = newParams(script, params) resp = &InvokeScriptResponse{} ) if err := c.performRequest("invoke", p, resp); err != nil { return nil, err } return resp, nil } // getRawTransaction queries a transaction by hash. // missing output wrapper at the moment, thus commented out // func (c *Client) getRawTransaction(hash string, verbose bool) (*response, error) { // var ( // params = newParams(hash, verbose) // resp = &response{} // ) // if err := c.performRequest("getrawtransaction", params, resp); err != nil { // return nil, err // } // return resp, nil // } // sendRawTransaction broadcasts a transaction over the NEO network. // The given hex string needs to be signed with a keypair. // When the result of the response object is true, the TX has successfully // been broadcasted to the network. func (c *Client) sendRawTransaction(rawTX *transaction.Transaction) (*response, error) { var ( params = newParams(hex.EncodeToString(rawTX.Bytes())) resp = &response{} ) if err := c.performRequest("sendrawtransaction", params, resp); err != nil { return nil, err } return resp, nil } // SendToAddress sends an amount of specific asset to a given address. // This call requires open wallet. (`wif` key in client struct.) // If response.Result is `true` then transaction was formed correctly and was written in blockchain. func (c *Client) SendToAddress(asset util.Uint256, address string, amount util.Fixed8) (*SendToAddressResponse, error) { var ( err error rawTx *transaction.Transaction txParams = ContractTxParams{ assetID: asset, address: address, value: amount, wif: c.WIF(), balancer: c.Balancer(), } resp *response response = &SendToAddressResponse{} ) if rawTx, err = CreateRawContractTransaction(txParams); err != nil { return nil, errors.Wrap(err, "failed to create raw transaction for `sendtoaddress`") } if resp, err = c.sendRawTransaction(rawTx); err != nil { return nil, errors.Wrap(err, "failed to send raw transaction") } response.Error = resp.Error response.ID = resp.ID response.JSONRPC = resp.JSONRPC response.Result = &TxResponse{ TxID: rawTx.Hash().ReverseString(), } return response, nil } // SignAndPushInvocationTx signs and pushes given script as an invocation // transaction using given wif to sign it and spending the amount of gas // specified. It returns a hash of the invocation transaction and an error. func (c *Client) SignAndPushInvocationTx(script []byte, wif *keys.WIF, gas util.Fixed8) (util.Uint256, error) { var txHash util.Uint256 var err error gasIDB, _ := hex.DecodeString("602c79718b16e442de58778e148d0b1084e3b2dffd5de6b7b16cee7969282de7") gasID, _ := util.Uint256DecodeReverseBytes(gasIDB) tx := transaction.NewInvocationTX(script, gas) fromAddress := wif.PrivateKey.Address() if gas > 0 { if err = AddInputsAndUnspentsToTx(tx, fromAddress, gasID, gas, c); err != nil { return txHash, errors.Wrap(err, "failed to add inputs and unspents to transaction") } } if err = SignTx(tx, wif); err != nil { return txHash, errors.Wrap(err, "failed to sign tx") } txHash = tx.Hash() resp, err := c.sendRawTransaction(tx) if err != nil { return txHash, errors.Wrap(err, "failed sendning tx") } if resp.Error != nil { return txHash, fmt.Errorf("remote returned %d: %s", resp.Error.Code, resp.Error.Message) } return txHash, nil }