func NewBlockChain(ethereum EthManager) *BlockChain {
bc := &BlockChain{}
bc.genesisBlock = NewBlockFromData(ethutil.Encode(Genesis))
bc.setLastBlock()
return bc
}
// State object encoding methods
func (c *StateObject) RlpEncode() []byte {
var root interface{}
if c.State != nil {
root = c.State.Trie.Root
} else {
root = ""
}
return ethutil.Encode([]interface{}{c.Nonce, c.Balance, root, ethcrypto.Sha3Bin(c.Code)})
}
func (tx *Transaction) Hash() []byte {
data := make([]interface{}, len(tx.Data))
for i, val := range tx.Data {
data[i] = val
}
preEnc := []interface{}{
tx.Nonce,
tx.Recipient,
tx.Value,
data,
}
return ethutil.Sha3Bin(ethutil.Encode(preEnc))
}
func MakeContract(tx *Transaction, state *State) *Contract {
// Create contract if there's no recipient
if tx.IsContract() {
addr := tx.Hash()[12:]
value := tx.Value
contract := NewContract(value, []byte(""))
state.trie.Update(string(addr), string(contract.RlpEncode()))
for i, val := range tx.Data {
if len(val) > 0 {
bytNum := ethutil.BigToBytes(big.NewInt(int64(i)), 256)
contract.state.trie.Update(string(bytNum), string(ethutil.Encode(val)))
}
}
state.trie.Update(string(addr), string(contract.RlpEncode()))
return contract
}
return nil
}
func (i *Console) ParseInput(input string) bool {
scanner := bufio.NewScanner(strings.NewReader(input))
scanner.Split(bufio.ScanWords)
count := 0
var tokens []string
for scanner.Scan() {
count++
tokens = append(tokens, scanner.Text())
}
if err := scanner.Err(); err != nil {
fmt.Fprintln(os.Stderr, "reading input:", err)
}
if len(tokens) == 0 {
return true
}
err := i.ValidateInput(tokens[0], count-1)
if err != nil {
fmt.Println(err)
} else {
switch tokens[0] {
case "update":
i.trie.Update(tokens[1], tokens[2])
i.PrintRoot()
case "get":
fmt.Println(i.trie.Get(tokens[1]))
case "root":
i.PrintRoot()
case "rawroot":
fmt.Println(i.trie.Root)
case "print":
i.db.Print()
case "dag":
fmt.Println(ethchain.DaggerVerify(ethutil.Big(tokens[1]), // hash
ethutil.BigPow(2, 36), // diff
ethutil.Big(tokens[2]))) // nonce
case "decode":
value := ethutil.NewValueFromBytes([]byte(tokens[1]))
fmt.Println(value)
case "getaddr":
encoded, _ := hex.DecodeString(tokens[1])
addr := i.ethereum.BlockManager.BlockChain().CurrentBlock.GetAddr(encoded)
fmt.Println("addr:", addr)
case "block":
encoded, _ := hex.DecodeString(tokens[1])
block := i.ethereum.BlockManager.BlockChain().GetBlock(encoded)
fmt.Println(block)
case "say":
i.ethereum.Broadcast(ethwire.MsgTalkTy, []interface{}{tokens[1]})
case "addp":
i.ethereum.ConnectToPeer(tokens[1])
case "pcount":
fmt.Println("peers:", i.ethereum.Peers().Len())
case "encode":
fmt.Printf("%q\n", ethutil.Encode(tokens[1]))
case "tx":
recipient, err := hex.DecodeString(tokens[1])
if err != nil {
fmt.Println("recipient err:", err)
} else {
tx := ethchain.NewTransaction(recipient, ethutil.Big(tokens[2]), []string{""})
data, _ := ethutil.Config.Db.Get([]byte("KeyRing"))
keyRing := ethutil.NewValueFromBytes(data)
tx.Sign(keyRing.Get(0).Bytes())
fmt.Printf("%x\n", tx.Hash())
i.ethereum.TxPool.QueueTransaction(tx)
}
case "gettx":
addr, _ := hex.DecodeString(tokens[1])
data, _ := ethutil.Config.Db.Get(addr)
if len(data) != 0 {
decoder := ethutil.NewValueFromBytes(data)
fmt.Println(decoder)
} else {
fmt.Println("gettx: tx not found")
}
case "contract":
contract := ethchain.NewTransaction([]byte{}, ethutil.Big(tokens[1]), []string{"PUSH", "1234"})
fmt.Printf("%x\n", contract.Hash())
i.ethereum.TxPool.QueueTransaction(contract)
case "exit", "quit", "q":
return false
case "help":
fmt.Printf("COMMANDS:\n" +
"\033[1m= DB =\033[0m\n" +
"update KEY VALUE - Updates/Creates a new value for the given key\n" +
"get KEY - Retrieves the given key\n" +
"root - Prints the hex encoded merkle root\n" +
"rawroot - Prints the raw merkle root\n" +
"block HASH - Prints the block\n" +
"getaddr ADDR - Prints the account associated with the address\n" +
"\033[1m= Dagger =\033[0m\n" +
"dag HASH NONCE - Verifies a nonce with the given hash with dagger\n" +
"\033[1m= Encoding =\033[0m\n" +
"decode STR\n" +
"encode STR\n" +
"\033[1m= Other =\033[0m\n" +
"addp HOST:PORT\n" +
"tx TO AMOUNT\n" +
"contract AMOUNT\n")
default:
fmt.Println("Unknown command:", tokens[0])
}
}
return true
}
func (a *Account) RlpEncode() []byte {
return ethutil.Encode([]interface{}{a.Amount, a.Nonce})
}
package ethchain
import (
"github.com/ethereum/eth-go/ethutil"
"math/big"
)
/*
* This is the special genesis block.
*/
var ZeroHash256 = make([]byte, 32)
var ZeroHash160 = make([]byte, 20)
var EmptyShaList = ethutil.Sha3Bin(ethutil.Encode([]interface{}{}))
var GenesisHeader = []interface{}{
// Previous hash (none)
//"",
ZeroHash256,
// Sha of uncles
ethutil.Sha3Bin(ethutil.Encode([]interface{}{})),
// Coinbase
ZeroHash160,
// Root state
"",
// Sha of transactions
//EmptyShaList,
ethutil.Sha3Bin(ethutil.Encode([]interface{}{})),
// Difficulty
ethutil.BigPow(2, 22),
// Time
func (bi *BlockInfo) RlpEncode() []byte {
return ethutil.Encode([]interface{}{bi.Number, bi.Hash, bi.Parent})
}
func (block *Block) SetTransactions(txs []*Transaction) {
block.transactions = txs
block.TxSha = ethutil.Sha3Bin(ethutil.Encode(block.rlpTxs()))
}
func (block *Block) SetUncles(uncles []*Block) {
block.Uncles = uncles
// Sha of the concatenated uncles
block.UncleSha = ethutil.Sha3Bin(ethutil.Encode(block.rlpUncles()))
}
func (block *Block) PrintHash() {
fmt.Println(block)
fmt.Println(ethutil.NewValue(ethutil.Encode([]interface{}{block.PrevHash, block.UncleSha, block.Coinbase, block.state.trie.Root, block.TxSha, block.Difficulty, block.Time, block.Extra, block.Nonce})))
}
func (block *Block) HashNoNonce() []byte {
return ethutil.Sha3Bin(ethutil.Encode([]interface{}{block.PrevHash, block.UncleSha, block.Coinbase, block.state.trie.Root, block.TxSha, block.Difficulty, block.Time, block.Extra}))
}
func (block *Block) HashNoNonce() []byte {
return ethcrypto.Sha3Bin(ethutil.Encode([]interface{}{block.PrevHash,
block.UncleSha, block.Coinbase, block.state.Trie.Root,
block.TxSha, block.Difficulty, block.Number, block.MinGasPrice,
block.GasLimit, block.GasUsed, block.Time, block.Extra}))
}
func (c *Contract) RlpEncode() []byte {
return ethutil.Encode([]interface{}{c.Amount, c.Nonce, c.state.trie.Root})
}