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package ethpub
import (
"bytes"
"encoding/json"
"github.com/ethereum/eth-go/ethchain"
"github.com/ethereum/eth-go/ethcrypto"
"github.com/ethereum/eth-go/ethlog"
"github.com/ethereum/eth-go/ethutil"
"math/big"
"strings"
"sync/atomic"
)
var logger = ethlog.NewLogger("PUB")
// TODO this has to move elsewhere
var cnfCtr = ethutil.Hex2Bytes("661005d2720d855f1d9976f88bb10c1a3398c77f")
type helper struct {
sm *ethchain.StateManager
}
func EthereumConfig(stateManager *ethchain.StateManager) helper {
return helper{stateManager}
}
func (self helper) obj() *ethchain.StateObject {
return self.sm.CurrentState().GetStateObject(cnfCtr)
}
func (self helper) NameReg() *ethchain.StateObject {
if self.obj() != nil {
addr := self.obj().GetStorage(big.NewInt(0))
if len(addr.Bytes()) > 0 {
return self.sm.CurrentState().GetStateObject(addr.Bytes())
}
}
return nil
}
type PEthereum struct {
manager ethchain.EthManager
stateManager *ethchain.StateManager
blockChain *ethchain.BlockChain
txPool *ethchain.TxPool
keyManager *ethcrypto.KeyManager
}
func NewPEthereum(manager ethchain.EthManager) *PEthereum {
return &PEthereum{
manager,
manager.StateManager(),
manager.BlockChain(),
manager.TxPool(),
manager.KeyManager(),
}
}
func (lib *PEthereum) GetBlock(hexHash string) *PBlock {
hash := ethutil.Hex2Bytes(hexHash)
block := lib.blockChain.GetBlock(hash)
return NewPBlock(block)
}
func (lib *PEthereum) GetKey() *PKey {
return NewPKey(lib.keyManager.KeyPair())
}
func (lib *PEthereum) GetStateObject(address string) *PStateObject {
stateObject := lib.stateManager.CurrentState().GetStateObject(ethutil.Hex2Bytes(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) GetPeers() []PPeer {
var peers []PPeer
for peer := lib.manager.Peers().Front(); peer != nil; peer = peer.Next() {
p := peer.Value.(ethchain.Peer)
// we only want connected peers
if atomic.LoadInt32(p.Connected()) != 0 {
peers = append(peers, *NewPPeer(p))
}
}
return peers
}
func (lib *PEthereum) GetIsMining() bool {
return lib.manager.IsMining()
}
func (lib *PEthereum) GetIsListening() bool {
return lib.manager.IsListening()
}
func (lib *PEthereum) GetCoinBase() string {
return ethutil.Bytes2Hex(lib.keyManager.Address())
}
func (lib *PEthereum) GetTransactionsFor(address string, asJson bool) interface{} {
sBlk := lib.manager.BlockChain().LastBlockHash
blk := lib.manager.BlockChain().GetBlock(sBlk)
addr := []byte(ethutil.Hex2Bytes(address))
var txs []*PTx
for ; blk != nil; blk = lib.manager.BlockChain().GetBlock(sBlk) {
sBlk = blk.PrevHash
// Loop through all transactions to see if we missed any while being offline
for _, tx := range blk.Transactions() {
if bytes.Compare(tx.Sender(), addr) == 0 || bytes.Compare(tx.Recipient, addr) == 0 {
ptx := NewPTx(tx)
//TODO: somehow move this to NewPTx
ptx.Confirmations = int(lib.manager.BlockChain().LastBlockNumber - blk.BlockInfo().Number)
txs = append(txs, ptx)
}
}
}
if asJson {
txJson, err := json.Marshal(txs)
if err != nil {
return nil
}
return string(txJson)
}
return txs
}
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 := ethcrypto.NewKeyPairFromSec(ethutil.Hex2Bytes(key))
if err != nil {
return ""
}
return ethutil.Bytes2Hex(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)
}
func FindAddressInNameReg(stateManager *ethchain.StateManager, name string) []byte {
nameReg := EthereumConfig(stateManager).NameReg()
if nameReg != nil {
addr := ethutil.RightPadBytes([]byte(name), 32)
reg := nameReg.GetStorage(ethutil.BigD(addr))
return reg.Bytes()
}
return nil
}
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 := FindAddressInNameReg(lib.stateManager, recipient)
if len(addr) > 0 {
hash = addr
} else {
hash = ethutil.Hex2Bytes(recipient)
}
}
var keyPair *ethcrypto.KeyPair
var err error
if ethutil.IsHex(key) {
keyPair, err = ethcrypto.NewKeyPairFromSec([]byte(ethutil.Hex2Bytes(key[2:])))
} else {
keyPair, err = ethcrypto.NewKeyPairFromSec([]byte(ethutil.Hex2Bytes(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.Hex2Bytes(scriptStr[2:])
} else {
script, err = ethutil.Compile(scriptStr, false)
if err != nil {
return nil, err
}
}
tx = ethchain.NewContractCreationTx(value, gas, gasPrice, script)
} else {
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().GetOrNewStateObject(keyPair.Address())
tx.Nonce = acc.Nonce
acc.Nonce += 1
lib.stateManager.TransState().UpdateStateObject(acc)
tx.Sign(keyPair.PrivateKey)
lib.txPool.QueueTransaction(tx)
if contractCreation {
logger.Infof("Contract addr %x", tx.CreationAddress())
}
return NewPReciept(contractCreation, tx.CreationAddress(), tx.Hash(), keyPair.Address()), nil
}
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