package xeth
/*
* eXtended ETHereum
*/
import (
"bytes"
"encoding/json"
"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
TxPool() *core.TxPool
PeerCount() int
IsMining() bool
IsListening() bool
Peers() []*p2p.Peer
KeyManager() *crypto.KeyManager
Db() ethutil.Database
EventMux() *event.TypeMux
Whisper() *whisper.Whisper
}
type XEth struct {
eth Backend
blockProcessor *core.BlockProcessor
chainManager *core.ChainManager
state *State
whisper *Whisper
}
func New(eth Backend) *XEth {
xeth := &XEth{
eth: eth,
blockProcessor: eth.BlockProcessor(),
chainManager: eth.ChainManager(),
whisper: NewWhisper(eth.Whisper()),
}
xeth.state = NewState(xeth)
return xeth
}
func (self *XEth) Backend() Backend { return self.eth }
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) BlockByNumber(num int32) *Block {
if num == -1 {
return NewBlock(self.chainManager.CurrentBlock())
}
return NewBlock(self.chainManager.GetBlockByNumber(uint64(num)))
}
func (self *XEth) Block(v interface{}) *Block {
if n, ok := v.(int32); ok {
return self.BlockByNumber(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(int32(f))
}
return nil
}
func (self *XEth) Accounts() []string {
return []string{toHex(self.eth.KeyManager().Address())}
}
func (self *XEth) PeerCount() int {
return self.eth.PeerCount()
}
func (self *XEth) IsMining() bool {
return self.eth.IsMining()
}
func (self *XEth) IsListening() bool {
return self.eth.IsListening()
}
func (self *XEth) Coinbase() string {
return toHex(self.eth.KeyManager().Address())
}
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
}
func (self *XEth) Call(toStr, valueStr, gasStr, gasPriceStr, dataStr string) (string, error) {
if len(gasStr) == 0 {
gasStr = "100000"
}
if len(gasPriceStr) == 0 {
gasPriceStr = "1"
}
var (
statedb = self.chainManager.TransState()
key = self.eth.KeyManager().KeyPair()
from = state.NewStateObject(key.Address(), self.eth.Db())
block = self.chainManager.CurrentBlock()
to = statedb.GetOrNewStateObject(fromHex(toStr))
data = fromHex(dataStr)
gas = ethutil.Big(gasStr)
price = ethutil.Big(gasPriceStr)
value = ethutil.Big(valueStr)
)
msg := types.NewTransactionMessage(fromHex(toStr), value, gas, price, data)
msg.Sign(key.PrivateKey)
vmenv := core.NewEnv(statedb, self.chainManager, msg, block)
res, err := vmenv.Call(from, to.Address(), data, gas, price, value)
if err != nil {
return "", err
}
return toHex(res), nil
}
func (self *XEth) Transact(toStr, valueStr, gasStr, gasPriceStr, codeStr string) (string, error) {
var (
to []byte
value = ethutil.NewValue(valueStr)
gas = ethutil.NewValue(gasStr)
price = ethutil.NewValue(gasPriceStr)
data []byte
key = self.eth.KeyManager().KeyPair()
contractCreation bool
)
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.TransState()
nonce := state.GetNonce(key.Address())
tx.SetNonce(nonce)
tx.Sign(key.PrivateKey)
// Do some pre processing for our "pre" events and hooks
block := self.chainManager.NewBlock(key.Address())
coinbase := state.GetOrNewStateObject(key.Address())
coinbase.SetGasPool(block.GasLimit())
self.blockProcessor.ApplyTransactions(coinbase, state, block, types.Transactions{tx}, true)
err := self.eth.TxPool().Add(tx)
if err != nil {
return "", err
}
state.SetNonce(key.Address(), 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
}
