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package ethpub
import (
"encoding/hex"
"fmt"
"github.com/ethereum/eth-go/ethchain"
"github.com/ethereum/eth-go/ethutil"
"math/big"
"strings"
)
type PEthereum struct {
manager ethchain.EthManager
stateManager *ethchain.StateManager
blockChain *ethchain.BlockChain
txPool *ethchain.TxPool
}
func NewPEthereum(manager ethchain.EthManager) *PEthereum {
return &PEthereum{
manager,
manager.StateManager(),
manager.BlockChain(),
manager.TxPool(),
}
}
func (lib *PEthereum) GetBlock(hexHash string) *PBlock {
hash := ethutil.FromHex(hexHash)
block := lib.blockChain.GetBlock(hash)
return NewPBlock(block)
}
func (lib *PEthereum) GetKey() *PKey {
keyPair := ethutil.GetKeyRing().Get(0)
return NewPKey(keyPair)
}
func (lib *PEthereum) GetStateObject(address string) *PStateObject {
stateObject := lib.stateManager.CurrentState().GetStateObject(ethutil.FromHex(address))
if stateObject != nil {
return NewPStateObject(stateObject)
}
// See GetStorage for explanation on "nil"
return NewPStateObject(nil)
}
func (lib *PEthereum) GetPeerCount() int {
return lib.manager.PeerCount()
}
func (lib *PEthereum) GetIsMining() bool {
return lib.manager.IsMining()
}
func (lib *PEthereum) GetIsListening() bool {
return lib.manager.IsListening()
}
func (lib *PEthereum) GetCoinBase() string {
data, _ := ethutil.Config.Db.Get([]byte("KeyRing"))
keyRing := ethutil.NewValueFromBytes(data)
key := keyRing.Get(0).Bytes()
return lib.SecretToAddress(hex.EncodeToString(key))
}
func (lib *PEthereum) GetStorage(address, storageAddress string) string {
return lib.GetStateObject(address).GetStorage(storageAddress)
}
func (lib *PEthereum) GetTxCountAt(address string) int {
return lib.GetStateObject(address).Nonce()
}
func (lib *PEthereum) IsContract(address string) bool {
return lib.GetStateObject(address).IsContract()
}
func (lib *PEthereum) SecretToAddress(key string) string {
pair, err := ethutil.NewKeyPairFromSec(ethutil.FromHex(key))
if err != nil {
return ""
}
return ethutil.Hex(pair.Address())
}
func (lib *PEthereum) Transact(key, recipient, valueStr, gasStr, gasPriceStr, dataStr string) (*PReceipt, error) {
return lib.createTx(key, recipient, valueStr, gasStr, gasPriceStr, dataStr)
}
func (lib *PEthereum) Create(key, valueStr, gasStr, gasPriceStr, script string) (*PReceipt, error) {
return lib.createTx(key, "", valueStr, gasStr, gasPriceStr, script)
}
var namereg = ethutil.FromHex("bb5f186604d057c1c5240ca2ae0f6430138ac010")
func GetAddressFromNameReg(stateManager *ethchain.StateManager, name string) []byte {
recp := new(big.Int).SetBytes([]byte(name))
object := stateManager.CurrentState().GetStateObject(namereg)
reg := object.GetStorage(recp)
return reg.Bytes()
}
func (lib *PEthereum) createTx(key, recipient, valueStr, gasStr, gasPriceStr, scriptStr string) (*PReceipt, error) {
var hash []byte
var contractCreation bool
if len(recipient) == 0 {
contractCreation = true
} else {
// Check if an address is stored by this address
addr := GetAddressFromNameReg(lib.stateManager, recipient)
if len(addr) > 0 {
hash = addr
} else {
hash = ethutil.FromHex(recipient)
}
}
var keyPair *ethutil.KeyPair
var err error
if key[0:2] == "0x" {
keyPair, err = ethutil.NewKeyPairFromSec([]byte(ethutil.FromHex(key[0:2])))
} else {
keyPair, err = ethutil.NewKeyPairFromSec([]byte(ethutil.FromHex(key)))
}
if err != nil {
return nil, err
}
value := ethutil.Big(valueStr)
gas := ethutil.Big(gasStr)
gasPrice := ethutil.Big(gasPriceStr)
var tx *ethchain.Transaction
// Compile and assemble the given data
if contractCreation {
var script []byte
var err error
if ethutil.IsHex(scriptStr) {
script = ethutil.FromHex(scriptStr)
} else {
script, err = ethutil.Compile(scriptStr)
if err != nil {
return nil, err
}
}
tx = ethchain.NewContractCreationTx(value, gas, gasPrice, script)
} else {
// Just in case it was submitted as a 0x prefixed string
if len(scriptStr) > 0 && scriptStr[0:2] == "0x" {
scriptStr = scriptStr[2:len(scriptStr)]
}
data := ethutil.StringToByteFunc(scriptStr, func(s string) (ret []byte) {
slice := strings.Split(s, "\n")
for _, dataItem := range slice {
d := ethutil.FormatData(dataItem)
ret = append(ret, d...)
}
return
})
tx = ethchain.NewTransactionMessage(hash, value, gas, gasPrice, data)
}
acc := lib.stateManager.TransState().GetStateObject(keyPair.Address())
tx.Nonce = acc.Nonce
acc.Nonce += 1
lib.stateManager.TransState().UpdateStateObject(acc)
tx.Sign(keyPair.PrivateKey)
lib.txPool.QueueTransaction(tx)
if contractCreation {
ethutil.Config.Log.Infof("Contract addr %x", tx.CreationAddress())
} else {
ethutil.Config.Log.Infof("Tx hash %x", tx.Hash())
}
return NewPReciept(contractCreation, tx.CreationAddress(), tx.Hash(), keyPair.Address()), nil
}
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