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rpc/api, xeth: added signTransaction method

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SignTransaction creates a transaction but does submit it to the
network. SignTransaction returns a structure which includes the
transaction object details as well as the RLP encoded transaction that
could possibly be submitted by the SendRawTransaction method.
This commit is contained in:
Jeffrey Wilcke 2015-08-15 23:51:31 +02:00
parent 9422eec554
commit 6ea05f5a54
3 changed files with 115 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
rpc/api/eth.go
View File

@ -26,6 +26,7 @@ import (
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/natspec"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/rpc/codec"
"github.com/ethereum/go-ethereum/rpc/shared"
"github.com/ethereum/go-ethereum/xeth"
@ -70,8 +71,10 @@ var (
"eth_getCode": (*ethApi).GetData,
"eth_getNatSpec": (*ethApi).GetNatSpec,
"eth_sign": (*ethApi).Sign,
"eth_sendRawTransaction": (*ethApi).SendRawTransaction,
"eth_sendRawTransaction": (*ethApi).SubmitTransaction,
"eth_submitTransaction": (*ethApi).SubmitTransaction,
"eth_sendTransaction": (*ethApi).SendTransaction,
"eth_signTransaction": (*ethApi).SignTransaction,
"eth_transact": (*ethApi).SendTransaction,
"eth_estimateGas": (*ethApi).EstimateGas,
"eth_call": (*ethApi).Call,
@ -285,7 +288,7 @@ func (self *ethApi) Sign(req *shared.Request) (interface{}, error) {
return v, nil
}
func (self *ethApi) SendRawTransaction(req *shared.Request) (interface{}, error) {
func (self *ethApi) SubmitTransaction(req *shared.Request) (interface{}, error) {
args := new(NewDataArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
@ -298,6 +301,45 @@ func (self *ethApi) SendRawTransaction(req *shared.Request) (interface{}, error)
return v, nil
}
// JsonTransaction is returned as response by the JSON RPC. It contains the
// signed RLP encoded transaction as Raw and the signed transaction object as Tx.
type JsonTransaction struct {
Raw string `json:"raw"`
Tx *tx `json:"tx"`
}
func (self *ethApi) SignTransaction(req *shared.Request) (interface{}, error) {
args := new(NewTxArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
// nonce may be nil ("guess" mode)
var nonce string
if args.Nonce != nil {
nonce = args.Nonce.String()
}
var gas, price string
if args.Gas != nil {
gas = args.Gas.String()
}
if args.GasPrice != nil {
price = args.GasPrice.String()
}
tx, err := self.xeth.SignTransaction(args.From, args.To, nonce, args.Value.String(), gas, price, args.Data)
if err != nil {
return nil, err
}
data, err := rlp.EncodeToBytes(tx)
if err != nil {
return nil, err
}
return JsonTransaction{"0x" + common.Bytes2Hex(data), newTx(tx)}, nil
}
func (self *ethApi) SendTransaction(req *shared.Request) (interface{}, error) {
args := new(NewTxArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {

22
rpc/api/eth_js.go
View File

@ -36,11 +36,23 @@ web3._extend({
params: 3,
inputFormatter: [web3._extend.formatters.inputTransactionFormatter, web3._extend.utils.fromDecimal, web3._extend.utils.fromDecimal]
}),
new web3._extend.Method({
name: 'getNatSpec',
call: 'eth_getNatSpec',
params: 1,
inputFormatter: [web3._extend.formatters.inputTransactionFormatter]
new web3._extend.Method({
name: 'getNatSpec',
call: 'eth_getNatSpec',
params: 1,
inputFormatter: [web3._extend.formatters.inputTransactionFormatter]
}),
new web3._extend.Method({
name: 'signTransaction',
call: 'eth_signTransaction',
params: 1,
inputFormatter: [web3._extend.formatters.inputTransactionFormatter]
}),
new web3._extend.Method({
name: 'submitTransaction',
call: 'eth_submitTransaction',
params: 1,
inputFormatter: [web3._extend.formatters.inputTransactionFormatter]
})
],
properties:

54
xeth/xeth.go
View File

@ -912,6 +912,60 @@ func (self *XEth) Frontend() Frontend {
return self.frontend
}
func (self *XEth) SignTransaction(fromStr, toStr, nonceStr, valueStr, gasStr, gasPriceStr, codeStr string) (*types.Transaction, error) {
if len(toStr) > 0 && toStr != "0x" && !isAddress(toStr) {
return nil, errors.New("Invalid address")
}
var (
from = common.HexToAddress(fromStr)
to = common.HexToAddress(toStr)
value = common.Big(valueStr)
gas *big.Int
price *big.Int
data []byte
contractCreation bool
)
if len(gasStr) == 0 {
gas = DefaultGas()
} else {
gas = common.Big(gasStr)
}
if len(gasPriceStr) == 0 {
price = self.DefaultGasPrice()
} else {
price = common.Big(gasPriceStr)
}
data = common.FromHex(codeStr)
if len(toStr) == 0 {
contractCreation = true
}
var nonce uint64
if len(nonceStr) != 0 {
nonce = common.Big(nonceStr).Uint64()
} else {
state := self.backend.TxPool().State()
nonce = state.GetNonce(from)
}
var tx *types.Transaction
if contractCreation {
tx = types.NewContractCreation(nonce, value, gas, price, data)
} else {
tx = types.NewTransaction(nonce, to, value, gas, price, data)
}
signed, err := self.sign(tx, from, false)
if err != nil {
return nil, err
}
return signed, nil
}
func (self *XEth) Transact(fromStr, toStr, nonceStr, valueStr, gasStr, gasPriceStr, codeStr string) (string, error) {
// this minimalistic recoding is enough (works for natspec.js)