aboutsummaryrefslogtreecommitdiffstats
path: root/xeth
diff options
context:
space:
mode:
Diffstat (limited to 'xeth')
-rw-r--r--xeth/state.go33
-rw-r--r--xeth/types.go236
-rw-r--r--xeth/whisper.go115
-rw-r--r--xeth/xeth.go407
4 files changed, 791 insertions, 0 deletions
diff --git a/xeth/state.go b/xeth/state.go
new file mode 100644
index 000000000..0f6a042b3
--- /dev/null
+++ b/xeth/state.go
@@ -0,0 +1,33 @@
+package xeth
+
+import "github.com/ethereum/go-ethereum/state"
+
+type State struct {
+ xeth *XEth
+ state *state.StateDB
+}
+
+func NewState(xeth *XEth, statedb *state.StateDB) *State {
+ return &State{xeth, statedb}
+}
+
+func (self *State) State() *state.StateDB {
+ return self.state
+}
+
+func (self *State) Get(addr string) *Object {
+ return &Object{self.state.GetStateObject(fromHex(addr))}
+}
+
+func (self *State) SafeGet(addr string) *Object {
+ return &Object{self.safeGet(addr)}
+}
+
+func (self *State) safeGet(addr string) *state.StateObject {
+ object := self.state.GetStateObject(fromHex(addr))
+ if object == nil {
+ object = state.NewStateObject(fromHex(addr), self.xeth.eth.StateDb())
+ }
+
+ return object
+}
diff --git a/xeth/types.go b/xeth/types.go
new file mode 100644
index 000000000..5b2d16018
--- /dev/null
+++ b/xeth/types.go
@@ -0,0 +1,236 @@
+package xeth
+
+import (
+ "bytes"
+ "fmt"
+ "strings"
+
+ "github.com/ethereum/go-ethereum/core"
+ "github.com/ethereum/go-ethereum/core/types"
+ "github.com/ethereum/go-ethereum/crypto"
+ "github.com/ethereum/go-ethereum/ethutil"
+ "github.com/ethereum/go-ethereum/p2p"
+ "github.com/ethereum/go-ethereum/rlp"
+ "github.com/ethereum/go-ethereum/state"
+)
+
+func toHex(b []byte) string {
+ return "0x" + ethutil.Bytes2Hex(b)
+}
+func fromHex(s string) []byte {
+ if len(s) > 1 {
+ if s[0:2] == "0x" {
+ s = s[2:]
+ }
+ return ethutil.Hex2Bytes(s)
+ }
+ return nil
+}
+
+type Object struct {
+ *state.StateObject
+}
+
+func NewObject(state *state.StateObject) *Object {
+ return &Object{state}
+}
+
+func (self *Object) StorageString(str string) *ethutil.Value {
+ if ethutil.IsHex(str) {
+ return self.storage(ethutil.Hex2Bytes(str[2:]))
+ } else {
+ return self.storage(ethutil.RightPadBytes([]byte(str), 32))
+ }
+}
+
+func (self *Object) StorageValue(addr *ethutil.Value) *ethutil.Value {
+ return self.storage(addr.Bytes())
+}
+
+func (self *Object) storage(addr []byte) *ethutil.Value {
+ return self.StateObject.GetStorage(ethutil.BigD(addr))
+}
+
+func (self *Object) Storage() (storage map[string]string) {
+ storage = make(map[string]string)
+
+ it := self.StateObject.Trie().Iterator()
+ for it.Next() {
+ var data []byte
+ rlp.Decode(bytes.NewReader(it.Value), &data)
+ storage[toHex(it.Key)] = toHex(data)
+ }
+
+ return
+}
+
+// Block interface exposed to QML
+type Block struct {
+ //Transactions string `json:"transactions"`
+ ref *types.Block
+ Size string `json:"size"`
+ Number int `json:"number"`
+ Hash string `json:"hash"`
+ Transactions *ethutil.List `json:"transactions"`
+ Uncles *ethutil.List `json:"uncles"`
+ Time int64 `json:"time"`
+ Coinbase string `json:"coinbase"`
+ Name string `json:"name"`
+ GasLimit string `json:"gasLimit"`
+ GasUsed string `json:"gasUsed"`
+ PrevHash string `json:"prevHash"`
+ Bloom string `json:"bloom"`
+ Raw string `json:"raw"`
+}
+
+// Creates a new QML Block from a chain block
+func NewBlock(block *types.Block) *Block {
+ if block == nil {
+ return &Block{}
+ }
+
+ ptxs := make([]*Transaction, len(block.Transactions()))
+ for i, tx := range block.Transactions() {
+ ptxs[i] = NewTx(tx)
+ }
+ txlist := ethutil.NewList(ptxs)
+
+ puncles := make([]*Block, len(block.Uncles()))
+ for i, uncle := range block.Uncles() {
+ puncles[i] = NewBlock(types.NewBlockWithHeader(uncle))
+ }
+ ulist := ethutil.NewList(puncles)
+
+ return &Block{
+ ref: block, Size: block.Size().String(),
+ Number: int(block.NumberU64()), GasUsed: block.GasUsed().String(),
+ GasLimit: block.GasLimit().String(), Hash: toHex(block.Hash()),
+ Transactions: txlist, Uncles: ulist,
+ Time: block.Time(),
+ Coinbase: toHex(block.Coinbase()),
+ PrevHash: toHex(block.ParentHash()),
+ Bloom: toHex(block.Bloom()),
+ Raw: block.String(),
+ }
+}
+
+func (self *Block) ToString() string {
+ if self.ref != nil {
+ return self.ref.String()
+ }
+
+ return ""
+}
+
+func (self *Block) GetTransaction(hash string) *Transaction {
+ tx := self.ref.Transaction(fromHex(hash))
+ if tx == nil {
+ return nil
+ }
+
+ return NewTx(tx)
+}
+
+type Transaction struct {
+ ref *types.Transaction
+
+ Value string `json:"value"`
+ Gas string `json:"gas"`
+ GasPrice string `json:"gasPrice"`
+ Hash string `json:"hash"`
+ Address string `json:"address"`
+ Sender string `json:"sender"`
+ RawData string `json:"rawData"`
+ Data string `json:"data"`
+ Contract bool `json:"isContract"`
+ CreatesContract bool `json:"createsContract"`
+ Confirmations int `json:"confirmations"`
+}
+
+func NewTx(tx *types.Transaction) *Transaction {
+ hash := toHex(tx.Hash())
+ receiver := toHex(tx.To())
+ if len(receiver) == 0 {
+ receiver = toHex(core.AddressFromMessage(tx))
+ }
+ sender := toHex(tx.From())
+ createsContract := core.MessageCreatesContract(tx)
+
+ var data string
+ if createsContract {
+ data = strings.Join(core.Disassemble(tx.Data()), "\n")
+ } else {
+ data = toHex(tx.Data())
+ }
+
+ return &Transaction{ref: tx, Hash: hash, Value: ethutil.CurrencyToString(tx.Value()), Address: receiver, Contract: createsContract, Gas: tx.Gas().String(), GasPrice: tx.GasPrice().String(), Data: data, Sender: sender, CreatesContract: createsContract, RawData: toHex(tx.Data())}
+}
+
+func (self *Transaction) ToString() string {
+ return self.ref.String()
+}
+
+type Key struct {
+ Address string `json:"address"`
+ PrivateKey string `json:"privateKey"`
+ PublicKey string `json:"publicKey"`
+}
+
+func NewKey(key *crypto.KeyPair) *Key {
+ return &Key{toHex(key.Address()), toHex(key.PrivateKey), toHex(key.PublicKey)}
+}
+
+type PReceipt struct {
+ CreatedContract bool `json:"createdContract"`
+ Address string `json:"address"`
+ Hash string `json:"hash"`
+ Sender string `json:"sender"`
+}
+
+func NewPReciept(contractCreation bool, creationAddress, hash, address []byte) *PReceipt {
+ return &PReceipt{
+ contractCreation,
+ toHex(creationAddress),
+ toHex(hash),
+ toHex(address),
+ }
+}
+
+// Peer interface exposed to QML
+
+type Peer struct {
+ ref *p2p.Peer
+ Ip string `json:"ip"`
+ Version string `json:"version"`
+ Caps string `json:"caps"`
+}
+
+func NewPeer(peer *p2p.Peer) *Peer {
+ var caps []string
+ for _, cap := range peer.Caps() {
+ caps = append(caps, fmt.Sprintf("%s/%d", cap.Name, cap.Version))
+ }
+
+ return &Peer{
+ ref: peer,
+ Ip: fmt.Sprintf("%v", peer.RemoteAddr()),
+ Version: fmt.Sprintf("%v", peer.ID()),
+ Caps: fmt.Sprintf("%v", caps),
+ }
+}
+
+type Receipt struct {
+ CreatedContract bool `json:"createdContract"`
+ Address string `json:"address"`
+ Hash string `json:"hash"`
+ Sender string `json:"sender"`
+}
+
+func NewReciept(contractCreation bool, creationAddress, hash, address []byte) *Receipt {
+ return &Receipt{
+ contractCreation,
+ toHex(creationAddress),
+ toHex(hash),
+ toHex(address),
+ }
+}
diff --git a/xeth/whisper.go b/xeth/whisper.go
new file mode 100644
index 000000000..d9c7e1614
--- /dev/null
+++ b/xeth/whisper.go
@@ -0,0 +1,115 @@
+package xeth
+
+import (
+ "errors"
+ "time"
+
+ "github.com/ethereum/go-ethereum/crypto"
+ "github.com/ethereum/go-ethereum/logger"
+ "github.com/ethereum/go-ethereum/whisper"
+)
+
+var qlogger = logger.NewLogger("XSHH")
+
+type Whisper struct {
+ *whisper.Whisper
+}
+
+func NewWhisper(w *whisper.Whisper) *Whisper {
+ return &Whisper{w}
+}
+
+func (self *Whisper) Post(payload string, to, from string, topics []string, priority, ttl uint32) error {
+ if priority == 0 {
+ priority = 1000
+ }
+
+ if ttl == 0 {
+ ttl = 100
+ }
+
+ pk := crypto.ToECDSAPub(fromHex(from))
+ if key := self.Whisper.GetIdentity(pk); key != nil || len(from) == 0 {
+ msg := whisper.NewMessage(fromHex(payload))
+ envelope, err := msg.Seal(time.Duration(priority*100000), whisper.Opts{
+ Ttl: time.Duration(ttl) * time.Second,
+ To: crypto.ToECDSAPub(fromHex(to)),
+ From: key,
+ Topics: whisper.TopicsFromString(topics...),
+ })
+
+ if err != nil {
+ return err
+ }
+
+ if err := self.Whisper.Send(envelope); err != nil {
+ return err
+ }
+ } else {
+ return errors.New("unmatched pub / priv for seal")
+ }
+
+ return nil
+}
+
+func (self *Whisper) NewIdentity() string {
+ key := self.Whisper.NewIdentity()
+
+ return toHex(crypto.FromECDSAPub(&key.PublicKey))
+}
+
+func (self *Whisper) HasIdentity(key string) bool {
+ return self.Whisper.HasIdentity(crypto.ToECDSAPub(fromHex(key)))
+}
+
+func (self *Whisper) Watch(opts *Options) int {
+ filter := whisper.Filter{
+ To: crypto.ToECDSAPub(fromHex(opts.To)),
+ From: crypto.ToECDSAPub(fromHex(opts.From)),
+ Topics: whisper.TopicsFromString(opts.Topics...),
+ }
+
+ var i int
+ filter.Fn = func(msg *whisper.Message) {
+ opts.Fn(NewWhisperMessage(msg))
+ }
+
+ i = self.Whisper.Watch(filter)
+
+ return i
+}
+
+func (self *Whisper) Messages(id int) (messages []WhisperMessage) {
+ msgs := self.Whisper.Messages(id)
+ messages = make([]WhisperMessage, len(msgs))
+ for i, message := range msgs {
+ messages[i] = NewWhisperMessage(message)
+ }
+
+ return
+}
+
+type Options struct {
+ To string
+ From string
+ Topics []string
+ Fn func(msg WhisperMessage)
+}
+
+type WhisperMessage struct {
+ ref *whisper.Message
+ Payload string `json:"payload"`
+ To string `json:"to"`
+ From string `json:"from"`
+ Sent int64 `json:"sent"`
+}
+
+func NewWhisperMessage(msg *whisper.Message) WhisperMessage {
+ return WhisperMessage{
+ ref: msg,
+ Payload: toHex(msg.Payload),
+ From: toHex(crypto.FromECDSAPub(msg.Recover())),
+ To: toHex(crypto.FromECDSAPub(msg.To)),
+ Sent: msg.Sent,
+ }
+}
diff --git a/xeth/xeth.go b/xeth/xeth.go
new file mode 100644
index 000000000..70172a1c8
--- /dev/null
+++ b/xeth/xeth.go
@@ -0,0 +1,407 @@
+// eXtended ETHereum
+package xeth
+
+import (
+ "bytes"
+ "encoding/json"
+ "fmt"
+ "math/big"
+
+ "github.com/ethereum/go-ethereum/accounts"
+ "github.com/ethereum/go-ethereum/core"
+ "github.com/ethereum/go-ethereum/core/types"
+ "github.com/ethereum/go-ethereum/crypto"
+ "github.com/ethereum/go-ethereum/ethutil"
+ "github.com/ethereum/go-ethereum/event"
+ "github.com/ethereum/go-ethereum/logger"
+ "github.com/ethereum/go-ethereum/p2p"
+ "github.com/ethereum/go-ethereum/state"
+ "github.com/ethereum/go-ethereum/whisper"
+)
+
+var pipelogger = logger.NewLogger("XETH")
+
+// to resolve the import cycle
+type Backend interface {
+ BlockProcessor() *core.BlockProcessor
+ ChainManager() *core.ChainManager
+ AccountManager() *accounts.Manager
+ TxPool() *core.TxPool
+ PeerCount() int
+ IsListening() bool
+ Peers() []*p2p.Peer
+ BlockDb() ethutil.Database
+ StateDb() ethutil.Database
+ EventMux() *event.TypeMux
+ Whisper() *whisper.Whisper
+
+ IsMining() bool
+ StartMining() error
+ StopMining()
+}
+
+// Frontend should be implemented by users of XEth. Its methods are
+// called whenever XEth makes a decision that requires user input.
+type Frontend interface {
+ // UnlockAccount is called when a transaction needs to be signed
+ // but the key corresponding to the transaction's sender is
+ // locked.
+ //
+ // It should unlock the account with the given address and return
+ // true if unlocking succeeded.
+ UnlockAccount(address []byte) bool
+
+ // This is called for all transactions inititated through
+ // Transact. It should prompt the user to confirm the transaction
+ // and return true if the transaction was acknowledged.
+ //
+ // ConfirmTransaction is not used for Call transactions
+ // because they cannot change any state.
+ ConfirmTransaction(tx *types.Transaction) bool
+}
+
+type XEth struct {
+ eth Backend
+ blockProcessor *core.BlockProcessor
+ chainManager *core.ChainManager
+ accountManager *accounts.Manager
+ state *State
+ whisper *Whisper
+
+ frontend Frontend
+}
+
+// dummyFrontend is a non-interactive frontend that allows all
+// transactions but cannot not unlock any keys.
+type dummyFrontend struct{}
+
+func (dummyFrontend) UnlockAccount([]byte) bool { return false }
+func (dummyFrontend) ConfirmTransaction(*types.Transaction) bool { return true }
+
+// New creates an XEth that uses the given frontend.
+// If a nil Frontend is provided, a default frontend which
+// confirms all transactions will be used.
+func New(eth Backend, frontend Frontend) *XEth {
+ xeth := &XEth{
+ eth: eth,
+ blockProcessor: eth.BlockProcessor(),
+ chainManager: eth.ChainManager(),
+ accountManager: eth.AccountManager(),
+ whisper: NewWhisper(eth.Whisper()),
+ frontend: frontend,
+ }
+ if frontend == nil {
+ xeth.frontend = dummyFrontend{}
+ }
+ xeth.state = NewState(xeth, xeth.chainManager.TransState())
+ return xeth
+}
+
+func (self *XEth) Backend() Backend { return self.eth }
+func (self *XEth) WithState(statedb *state.StateDB) *XEth {
+ xeth := &XEth{
+ eth: self.eth,
+ blockProcessor: self.blockProcessor,
+ chainManager: self.chainManager,
+ whisper: self.whisper,
+ }
+
+ xeth.state = NewState(xeth, statedb)
+ return xeth
+}
+func (self *XEth) State() *State { return self.state }
+
+func (self *XEth) Whisper() *Whisper { return self.whisper }
+
+func (self *XEth) BlockByHash(strHash string) *Block {
+ hash := fromHex(strHash)
+ block := self.chainManager.GetBlock(hash)
+
+ return NewBlock(block)
+}
+
+func (self *XEth) EthBlockByHash(strHash string) *types.Block {
+ hash := fromHex(strHash)
+ block := self.chainManager.GetBlock(hash)
+
+ return block
+}
+
+func (self *XEth) BlockByNumber(num int64) *Block {
+ if num == -1 {
+ return NewBlock(self.chainManager.CurrentBlock())
+ }
+
+ return NewBlock(self.chainManager.GetBlockByNumber(uint64(num)))
+}
+
+func (self *XEth) EthBlockByNumber(num int64) *types.Block {
+ if num == -1 {
+ return self.chainManager.CurrentBlock()
+ }
+
+ return self.chainManager.GetBlockByNumber(uint64(num))
+}
+
+func (self *XEth) Block(v interface{}) *Block {
+ if n, ok := v.(int32); ok {
+ return self.BlockByNumber(int64(n))
+ } else if str, ok := v.(string); ok {
+ return self.BlockByHash(str)
+ } else if f, ok := v.(float64); ok { // Don't ask ...
+ return self.BlockByNumber(int64(f))
+ }
+
+ return nil
+}
+
+func (self *XEth) Accounts() []string {
+ // TODO: check err?
+ accounts, _ := self.eth.AccountManager().Accounts()
+ accountAddresses := make([]string, len(accounts))
+ for i, ac := range accounts {
+ accountAddresses[i] = toHex(ac.Address)
+ }
+ return accountAddresses
+}
+
+func (self *XEth) PeerCount() int {
+ return self.eth.PeerCount()
+}
+
+func (self *XEth) IsMining() bool {
+ return self.eth.IsMining()
+}
+
+func (self *XEth) SetMining(shouldmine bool) bool {
+ ismining := self.eth.IsMining()
+ if shouldmine && !ismining {
+ err := self.eth.StartMining()
+ return err == nil
+ }
+ if ismining && !shouldmine {
+ self.eth.StopMining()
+ }
+ return self.eth.IsMining()
+}
+
+func (self *XEth) IsListening() bool {
+ return self.eth.IsListening()
+}
+
+func (self *XEth) Coinbase() string {
+ cb, _ := self.eth.AccountManager().Coinbase()
+ return toHex(cb)
+}
+
+func (self *XEth) NumberToHuman(balance string) string {
+ b := ethutil.Big(balance)
+
+ return ethutil.CurrencyToString(b)
+}
+
+func (self *XEth) StorageAt(addr, storageAddr string) string {
+ storage := self.State().SafeGet(addr).StorageString(storageAddr)
+
+ return toHex(storage.Bytes())
+}
+
+func (self *XEth) BalanceAt(addr string) string {
+ return self.State().SafeGet(addr).Balance().String()
+}
+
+func (self *XEth) TxCountAt(address string) int {
+ return int(self.State().SafeGet(address).Nonce())
+}
+
+func (self *XEth) CodeAt(address string) string {
+ return toHex(self.State().SafeGet(address).Code())
+}
+
+func (self *XEth) IsContract(address string) bool {
+ return len(self.State().SafeGet(address).Code()) > 0
+}
+
+func (self *XEth) SecretToAddress(key string) string {
+ pair, err := crypto.NewKeyPairFromSec(fromHex(key))
+ if err != nil {
+ return ""
+ }
+
+ return toHex(pair.Address())
+}
+
+func (self *XEth) Execute(addr, value, gas, price, data string) (string, error) {
+ return "", nil
+}
+
+type KeyVal struct {
+ Key string `json:"key"`
+ Value string `json:"value"`
+}
+
+func (self *XEth) EachStorage(addr string) string {
+ var values []KeyVal
+ object := self.State().SafeGet(addr)
+ it := object.Trie().Iterator()
+ for it.Next() {
+ values = append(values, KeyVal{toHex(it.Key), toHex(it.Value)})
+ }
+
+ valuesJson, err := json.Marshal(values)
+ if err != nil {
+ return ""
+ }
+
+ return string(valuesJson)
+}
+
+func (self *XEth) ToAscii(str string) string {
+ padded := ethutil.RightPadBytes([]byte(str), 32)
+
+ return "0x" + toHex(padded)
+}
+
+func (self *XEth) FromAscii(str string) string {
+ if ethutil.IsHex(str) {
+ str = str[2:]
+ }
+
+ return string(bytes.Trim(fromHex(str), "\x00"))
+}
+
+func (self *XEth) FromNumber(str string) string {
+ if ethutil.IsHex(str) {
+ str = str[2:]
+ }
+
+ return ethutil.BigD(fromHex(str)).String()
+}
+
+func (self *XEth) PushTx(encodedTx string) (string, error) {
+ tx := types.NewTransactionFromBytes(fromHex(encodedTx))
+ err := self.eth.TxPool().Add(tx)
+ if err != nil {
+ return "", err
+ }
+
+ if tx.To() == nil {
+ addr := core.AddressFromMessage(tx)
+ return toHex(addr), nil
+ }
+ return toHex(tx.Hash()), nil
+}
+
+var (
+ defaultGasPrice = big.NewInt(10000000000000)
+ defaultGas = big.NewInt(90000)
+)
+
+func (self *XEth) Call(fromStr, toStr, valueStr, gasStr, gasPriceStr, dataStr string) (string, error) {
+ statedb := self.State().State() //self.chainManager.TransState()
+ msg := callmsg{
+ from: statedb.GetOrNewStateObject(fromHex(fromStr)),
+ to: fromHex(toStr),
+ gas: ethutil.Big(gasStr),
+ gasPrice: ethutil.Big(gasPriceStr),
+ value: ethutil.Big(valueStr),
+ data: fromHex(dataStr),
+ }
+ if msg.gas.Cmp(big.NewInt(0)) == 0 {
+ msg.gas = defaultGas
+ }
+
+ if msg.gasPrice.Cmp(big.NewInt(0)) == 0 {
+ msg.gasPrice = defaultGasPrice
+ }
+
+ block := self.chainManager.CurrentBlock()
+ vmenv := core.NewEnv(statedb, self.chainManager, msg, block)
+
+ res, err := vmenv.Call(msg.from, msg.to, msg.data, msg.gas, msg.gasPrice, msg.value)
+ return toHex(res), err
+}
+
+func (self *XEth) Transact(fromStr, toStr, valueStr, gasStr, gasPriceStr, codeStr string) (string, error) {
+ var (
+ from []byte
+ to []byte
+ value = ethutil.NewValue(valueStr)
+ gas = ethutil.NewValue(gasStr)
+ price = ethutil.NewValue(gasPriceStr)
+ data []byte
+ contractCreation bool
+ )
+
+ from = fromHex(fromStr)
+ data = fromHex(codeStr)
+ to = fromHex(toStr)
+ if len(to) == 0 {
+ contractCreation = true
+ }
+
+ var tx *types.Transaction
+ if contractCreation {
+ tx = types.NewContractCreationTx(value.BigInt(), gas.BigInt(), price.BigInt(), data)
+ } else {
+ tx = types.NewTransactionMessage(to, value.BigInt(), gas.BigInt(), price.BigInt(), data)
+ }
+
+ state := self.chainManager.TxState()
+ nonce := state.GetNonce(from)
+ tx.SetNonce(nonce)
+
+ if err := self.sign(tx, from, false); err != nil {
+ return "", err
+ }
+ if err := self.eth.TxPool().Add(tx); err != nil {
+ return "", err
+ }
+ state.SetNonce(from, nonce+1)
+
+ if contractCreation {
+ addr := core.AddressFromMessage(tx)
+ pipelogger.Infof("Contract addr %x\n", addr)
+ }
+
+ if types.IsContractAddr(to) {
+ return toHex(core.AddressFromMessage(tx)), nil
+ }
+ return toHex(tx.Hash()), nil
+}
+
+func (self *XEth) sign(tx *types.Transaction, from []byte, didUnlock bool) error {
+ sig, err := self.accountManager.Sign(accounts.Account{Address: from}, tx.Hash())
+ if err == accounts.ErrLocked {
+ if didUnlock {
+ return fmt.Errorf("sender account still locked after successful unlock")
+ }
+ if !self.frontend.UnlockAccount(from) {
+ return fmt.Errorf("could not unlock sender account")
+ }
+ // retry signing, the account should now be unlocked.
+ return self.sign(tx, from, true)
+ } else if err != nil {
+ return err
+ }
+ tx.SetSignatureValues(sig)
+ return nil
+}
+
+// callmsg is the message type used for call transations.
+type callmsg struct {
+ from *state.StateObject
+ to []byte
+ gas, gasPrice *big.Int
+ value *big.Int
+ data []byte
+}
+
+// accessor boilerplate to implement core.Message
+func (m callmsg) From() []byte { return m.from.Address() }
+func (m callmsg) Nonce() uint64 { return m.from.Nonce() }
+func (m callmsg) To() []byte { return m.to }
+func (m callmsg) GasPrice() *big.Int { return m.gasPrice }
+func (m callmsg) Gas() *big.Int { return m.gas }
+func (m callmsg) Value() *big.Int { return m.value }
+func (m callmsg) Data() []byte { return m.data }