plugeth/ethereum.go

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package main
import (
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"fmt"
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"github.com/ethereum/eth-go"
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"github.com/ethereum/eth-go/ethchain"
"github.com/ethereum/eth-go/ethutil"
"github.com/ethereum/eth-go/ethwire"
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"github.com/ethereum/go-ethereum/ui"
"github.com/niemeyer/qml"
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"github.com/obscuren/secp256k1-go"
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"log"
"os"
"os/signal"
"runtime"
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)
const Debug = true
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// Register interrupt handlers so we can stop the ethereum
func RegisterInterupts(s *eth.Ethereum) {
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// Buffered chan of one is enough
c := make(chan os.Signal, 1)
// Notify about interrupts for now
signal.Notify(c, os.Interrupt)
go func() {
for sig := range c {
fmt.Printf("Shutting down (%v) ... \n", sig)
s.Stop()
}
}()
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}
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func CreateKeyPair(force bool) {
data, _ := ethutil.Config.Db.Get([]byte("KeyRing"))
if len(data) == 0 || force {
pub, prv := secp256k1.GenerateKeyPair()
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pair := &ethutil.Key{PrivateKey: prv, PublicKey: pub}
ethutil.Config.Db.Put([]byte("KeyRing"), pair.RlpEncode())
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fmt.Printf(`
Generating new address and keypair.
Please keep your keys somewhere save.
++++++++++++++++ KeyRing +++++++++++++++++++
addr: %x
prvk: %x
pubk: %x
++++++++++++++++++++++++++++++++++++++++++++
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`, pair.Address(), prv, pub)
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}
}
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func ImportPrivateKey(prvKey string) {
key := ethutil.FromHex(prvKey)
msg := []byte("tmp")
// Couldn't think of a better way to get the pub key
sig, _ := secp256k1.Sign(msg, key)
pub, _ := secp256k1.RecoverPubkey(msg, sig)
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pair := &ethutil.Key{PrivateKey: key, PublicKey: pub}
ethutil.Config.Db.Put([]byte("KeyRing"), pair.RlpEncode())
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fmt.Printf(`
Importing private key
++++++++++++++++ KeyRing +++++++++++++++++++
addr: %x
prvk: %x
pubk: %x
++++++++++++++++++++++++++++++++++++++++++++
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`, pair.Address(), key, pub)
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}
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func main() {
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Init()
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// Qt has to be initialized in the main thread or it will throw errors
// It has to be called BEFORE setting the maximum procs.
if UseGui {
qml.Init(nil)
}
runtime.GOMAXPROCS(runtime.NumCPU())
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ethchain.InitFees()
ethutil.ReadConfig(DataDir)
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ethutil.Config.Seed = UseSeed
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// Instantiated a eth stack
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ethereum, err := eth.New(eth.CapDefault, UseUPnP)
if err != nil {
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log.Println("eth start err:", err)
return
}
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ethereum.Port = OutboundPort
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if GenAddr {
fmt.Println("This action overwrites your old private key. Are you sure? (y/n)")
var r string
fmt.Scanln(&r)
for ; ; fmt.Scanln(&r) {
if r == "n" || r == "y" {
break
} else {
fmt.Printf("Yes or no?", r)
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}
}
if r == "y" {
CreateKeyPair(true)
}
os.Exit(0)
} else {
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if len(ImportKey) > 0 {
fmt.Println("This action overwrites your old private key. Are you sure? (y/n)")
var r string
fmt.Scanln(&r)
for ; ; fmt.Scanln(&r) {
if r == "n" || r == "y" {
break
} else {
fmt.Printf("Yes or no?", r)
}
}
if r == "y" {
ImportPrivateKey(ImportKey)
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os.Exit(0)
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}
} else {
CreateKeyPair(false)
}
}
if ExportKey {
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key := ethutil.Config.Db.GetKeys()[0]
fmt.Printf("%x\n", key.PrivateKey)
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os.Exit(0)
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}
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if ShowGenesis {
fmt.Println(ethereum.BlockManager.BlockChain().Genesis())
os.Exit(0)
}
log.Printf("Starting Ethereum v%s\n", ethutil.Config.Ver)
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// Set the max peers
ethereum.MaxPeers = MaxPeer
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if StartConsole {
err := os.Mkdir(ethutil.Config.ExecPath, os.ModePerm)
// Error is OK if the error is ErrExist
if err != nil && !os.IsExist(err) {
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log.Panic("Unable to create EXECPATH:", err)
}
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console := NewConsole(ethereum)
go console.Start()
}
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if UseGui {
gui := ethui.New(ethereum)
gui.Start()
//ethereum.Stop()
} else {
RegisterInterupts(ethereum)
ethereum.Start()
if StartMining {
log.Printf("Miner started\n")
// Fake block mining. It broadcasts a new block every 5 seconds
go func() {
pow := &ethchain.EasyPow{}
data, _ := ethutil.Config.Db.Get([]byte("KeyRing"))
keyRing := ethutil.NewValueFromBytes(data)
addr := keyRing.Get(1).Bytes()
for {
txs := ethereum.TxPool.Flush()
// Create a new block which we're going to mine
block := ethereum.BlockManager.BlockChain().NewBlock(addr, txs)
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log.Println("Mining on new block. Includes", len(block.Transactions()), "transactions")
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// Apply all transactions to the block
ethereum.BlockManager.ApplyTransactions(block, block.Transactions())
ethereum.BlockManager.AccumelateRewards(block, block)
// Search the nonce
block.Nonce = pow.Search(block)
ethereum.Broadcast(ethwire.MsgBlockTy, []interface{}{block.Value().Val})
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err := ethereum.BlockManager.ProcessBlock(block)
if err != nil {
log.Println(err)
} else {
log.Println("\n+++++++ MINED BLK +++++++\n", ethereum.BlockManager.BlockChain().CurrentBlock)
}
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}
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}()
}
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// Wait for shutdown
ethereum.WaitForShutdown()
}
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}