plugeth/ethereal/gui.go

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package main
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import (
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"bytes"
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"fmt"
"github.com/ethereum/eth-go"
"github.com/ethereum/eth-go/ethchain"
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"github.com/ethereum/eth-go/ethdb"
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"github.com/ethereum/eth-go/ethlog"
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"github.com/ethereum/eth-go/ethminer"
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"github.com/ethereum/eth-go/ethpub"
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"github.com/ethereum/eth-go/ethutil"
"github.com/ethereum/eth-go/ethwire"
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"github.com/ethereum/go-ethereum/utils"
"github.com/go-qml/qml"
"math/big"
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"strconv"
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"strings"
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"time"
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)
var logger = ethlog.NewLogger("GUI")
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type Gui struct {
// The main application window
win *qml.Window
// QML Engine
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engine *qml.Engine
component *qml.Common
// The ethereum interface
eth *eth.Ethereum
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// The public Ethereum library
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uiLib *UiLib
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txDb *ethdb.LDBDatabase
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pub *ethpub.PEthereum
logLevel ethlog.LogLevel
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open bool
Session string
clientIdentity *ethwire.SimpleClientIdentity
config *ethutil.ConfigManager
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miner *ethminer.Miner
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}
// Create GUI, but doesn't start it
func NewWindow(ethereum *eth.Ethereum, config *ethutil.ConfigManager, clientIdentity *ethwire.SimpleClientIdentity, session string, logLevel int) *Gui {
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db, err := ethdb.NewLDBDatabase("tx_database")
if err != nil {
panic(err)
}
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pub := ethpub.NewPEthereum(ethereum)
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return &Gui{eth: ethereum, txDb: db, pub: pub, logLevel: ethlog.LogLevel(logLevel), Session: session, open: false, clientIdentity: clientIdentity, config: config}
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}
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func (gui *Gui) Start(assetPath string) {
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defer gui.txDb.Close()
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// Register ethereum functions
qml.RegisterTypes("Ethereum", 1, 0, []qml.TypeSpec{{
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Init: func(p *ethpub.PBlock, obj qml.Object) { p.Number = 0; p.Hash = "" },
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}, {
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Init: func(p *ethpub.PTx, obj qml.Object) { p.Value = ""; p.Hash = ""; p.Address = "" },
}, {
Init: func(p *ethpub.KeyVal, obj qml.Object) { p.Key = ""; p.Value = "" },
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}})
// Create a new QML engine
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gui.engine = qml.NewEngine()
context := gui.engine.Context()
// Expose the eth library and the ui library to QML
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context.SetVar("eth", gui)
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context.SetVar("pub", gui.pub)
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gui.uiLib = NewUiLib(gui.engine, gui.eth, assetPath)
context.SetVar("ui", gui.uiLib)
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// Load the main QML interface
data, _ := ethutil.Config.Db.Get([]byte("KeyRing"))
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var win *qml.Window
var err error
var addlog = false
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if len(data) == 0 {
win, err = gui.showKeyImport(context)
} else {
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win, err = gui.showWallet(context)
addlog = true
}
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if err != nil {
logger.Errorln("asset not found: you can set an alternative asset path on the command line using option 'asset_path'", err)
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panic(err)
}
logger.Infoln("Starting GUI")
gui.open = true
win.Show()
// only add the gui logger after window is shown otherwise slider wont be shown
if addlog {
ethlog.AddLogSystem(gui)
}
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win.Wait()
// need to silence gui logger after window closed otherwise logsystem hangs (but do not save loglevel)
gui.logLevel = ethlog.Silence
gui.open = false
}
func (gui *Gui) Stop() {
if gui.open {
gui.logLevel = ethlog.Silence
gui.open = false
gui.win.Hide()
}
logger.Infoln("Stopped")
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}
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func (gui *Gui) ToggleMining() {
var txt string
if gui.eth.Mining {
utils.StopMining(gui.eth)
txt = "Start mining"
} else {
utils.StartMining(gui.eth)
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gui.miner = utils.GetMiner()
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txt = "Stop mining"
}
gui.win.Root().Set("miningButtonText", txt)
}
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func (gui *Gui) showWallet(context *qml.Context) (*qml.Window, error) {
component, err := gui.engine.LoadFile(gui.uiLib.AssetPath("qml/wallet.qml"))
if err != nil {
return nil, err
}
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win := gui.createWindow(component)
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go func() {
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go gui.setInitialBlockChain()
gui.loadAddressBook()
gui.setPeerInfo()
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gui.readPreviousTransactions()
}()
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go gui.update()
return win, nil
}
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func (gui *Gui) ImportKey(filePath string) {
}
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func (gui *Gui) showKeyImport(context *qml.Context) (*qml.Window, error) {
context.SetVar("lib", gui)
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component, err := gui.engine.LoadFile(gui.uiLib.AssetPath("qml/first_run.qml"))
if err != nil {
return nil, err
}
return gui.createWindow(component), nil
}
func (gui *Gui) createWindow(comp qml.Object) *qml.Window {
win := comp.CreateWindow(nil)
gui.win = win
gui.uiLib.win = win
return gui.win
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}
func (gui *Gui) ImportAndSetPrivKey(secret string) bool {
err := gui.eth.KeyManager().InitFromString(gui.Session, 0, secret)
if err != nil {
logger.Errorln("unable to import: ", err)
return false
}
logger.Errorln("successfully imported: ", err)
return true
}
func (gui *Gui) CreateAndSetPrivKey() (string, string, string, string) {
err := gui.eth.KeyManager().Init(gui.Session, 0, true)
if err != nil {
logger.Errorln("unable to create key: ", err)
return "", "", "", ""
}
return gui.eth.KeyManager().KeyPair().AsStrings()
}
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func (gui *Gui) setInitialBlockChain() {
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sBlk := gui.eth.BlockChain().LastBlockHash
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blk := gui.eth.BlockChain().GetBlock(sBlk)
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for ; blk != nil; blk = gui.eth.BlockChain().GetBlock(sBlk) {
sBlk = blk.PrevHash
addr := gui.address()
// 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 {
if ok, _ := gui.txDb.Get(tx.Hash()); ok == nil {
gui.txDb.Put(tx.Hash(), tx.RlpEncode())
}
}
}
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gui.processBlock(blk, true)
}
}
type address struct {
Name, Address string
}
func (gui *Gui) loadAddressBook() {
gui.win.Root().Call("clearAddress")
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nameReg := ethpub.EthereumConfig(gui.eth.StateManager()).NameReg()
if nameReg != nil {
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nameReg.EachStorage(func(name string, value *ethutil.Value) {
if name[0] != 0 {
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value.Decode()
gui.win.Root().Call("addAddress", struct{ Name, Address string }{name, ethutil.Bytes2Hex(value.Bytes())})
}
})
}
}
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func (gui *Gui) readPreviousTransactions() {
it := gui.txDb.Db().NewIterator(nil, nil)
addr := gui.address()
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for it.Next() {
tx := ethchain.NewTransactionFromBytes(it.Value())
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var inout string
if bytes.Compare(tx.Sender(), addr) == 0 {
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inout = "send"
} else {
inout = "recv"
}
gui.win.Root().Call("addTx", ethpub.NewPTx(tx), inout)
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}
it.Release()
}
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func (gui *Gui) processBlock(block *ethchain.Block, initial bool) {
name := ethpub.FindNameInNameReg(gui.eth.StateManager(), block.Coinbase)
b := ethpub.NewPBlock(block)
b.Name = name
gui.win.Root().Call("addBlock", b, initial)
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}
func (gui *Gui) setWalletValue(amount, unconfirmedFunds *big.Int) {
var str string
if unconfirmedFunds != nil {
pos := "+"
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if unconfirmedFunds.Cmp(big.NewInt(0)) < 0 {
pos = "-"
}
val := ethutil.CurrencyToString(new(big.Int).Abs(ethutil.BigCopy(unconfirmedFunds)))
str = fmt.Sprintf("%v (%s %v)", ethutil.CurrencyToString(amount), pos, val)
} else {
str = fmt.Sprintf("%v", ethutil.CurrencyToString(amount))
}
gui.win.Root().Call("setWalletValue", str)
}
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func (self *Gui) getObjectByName(objectName string) qml.Object {
return self.win.Root().ObjectByName(objectName)
}
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// Simple go routine function that updates the list of peers in the GUI
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func (gui *Gui) update() {
reactor := gui.eth.Reactor()
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var (
blockChan = make(chan ethutil.React, 1)
txChan = make(chan ethutil.React, 1)
objectChan = make(chan ethutil.React, 1)
peerChan = make(chan ethutil.React, 1)
chainSyncChan = make(chan ethutil.React, 1)
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miningChan = make(chan ethutil.React, 1)
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)
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reactor.Subscribe("newBlock", blockChan)
reactor.Subscribe("newTx:pre", txChan)
reactor.Subscribe("newTx:post", txChan)
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reactor.Subscribe("chainSync", chainSyncChan)
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reactor.Subscribe("miner:start", miningChan)
reactor.Subscribe("miner:stop", miningChan)
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nameReg := ethpub.EthereumConfig(gui.eth.StateManager()).NameReg()
if nameReg != nil {
reactor.Subscribe("object:"+string(nameReg.Address()), objectChan)
}
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reactor.Subscribe("peerList", peerChan)
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peerUpdateTicker := time.NewTicker(5 * time.Second)
generalUpdateTicker := time.NewTicker(1 * time.Second)
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state := gui.eth.StateManager().TransState()
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unconfirmedFunds := new(big.Int)
gui.win.Root().Call("setWalletValue", fmt.Sprintf("%v", ethutil.CurrencyToString(state.GetAccount(gui.address()).Amount)))
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gui.getObjectByName("syncProgressIndicator").Set("visible", !gui.eth.IsUpToDate())
lastBlockLabel := gui.getObjectByName("lastBlockLabel")
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for {
select {
case b := <-blockChan:
block := b.Resource.(*ethchain.Block)
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gui.processBlock(block, false)
if bytes.Compare(block.Coinbase, gui.address()) == 0 {
gui.setWalletValue(gui.eth.StateManager().CurrentState().GetAccount(gui.address()).Amount, nil)
}
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case txMsg := <-txChan:
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tx := txMsg.Resource.(*ethchain.Transaction)
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if txMsg.Event == "newTx:pre" {
object := state.GetAccount(gui.address())
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if bytes.Compare(tx.Sender(), gui.address()) == 0 {
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gui.win.Root().Call("addTx", ethpub.NewPTx(tx), "send")
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gui.txDb.Put(tx.Hash(), tx.RlpEncode())
unconfirmedFunds.Sub(unconfirmedFunds, tx.Value)
} else if bytes.Compare(tx.Recipient, gui.address()) == 0 {
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gui.win.Root().Call("addTx", ethpub.NewPTx(tx), "recv")
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gui.txDb.Put(tx.Hash(), tx.RlpEncode())
unconfirmedFunds.Add(unconfirmedFunds, tx.Value)
}
gui.setWalletValue(object.Amount, unconfirmedFunds)
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} else {
object := state.GetAccount(gui.address())
if bytes.Compare(tx.Sender(), gui.address()) == 0 {
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object.SubAmount(tx.Value)
} else if bytes.Compare(tx.Recipient, gui.address()) == 0 {
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object.AddAmount(tx.Value)
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}
gui.setWalletValue(object.Amount, nil)
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state.UpdateStateObject(object)
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}
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case msg := <-chainSyncChan:
sync := msg.Resource.(bool)
gui.win.Root().ObjectByName("syncProgressIndicator").Set("visible", sync)
case <-objectChan:
gui.loadAddressBook()
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case <-peerChan:
gui.setPeerInfo()
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case <-peerUpdateTicker.C:
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gui.setPeerInfo()
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case msg := <-miningChan:
if msg.Event == "miner:start" {
gui.miner = msg.Resource.(*ethminer.Miner)
} else {
gui.miner = nil
}
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case <-generalUpdateTicker.C:
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statusText := "#" + gui.eth.BlockChain().CurrentBlock.Number.String()
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if gui.miner != nil {
pow := gui.miner.GetPow()
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if pow.GetHashrate() != 0 {
statusText = "Mining @ " + strconv.FormatInt(pow.GetHashrate(), 10) + "Khash - " + statusText
}
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}
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lastBlockLabel.Set("text", statusText)
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}
}
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}
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func (gui *Gui) setPeerInfo() {
gui.win.Root().Call("setPeers", fmt.Sprintf("%d / %d", gui.eth.PeerCount(), gui.eth.MaxPeers))
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gui.win.Root().Call("resetPeers")
for _, peer := range gui.pub.GetPeers() {
gui.win.Root().Call("addPeer", peer)
}
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}
func (gui *Gui) privateKey() string {
return ethutil.Bytes2Hex(gui.eth.KeyManager().PrivateKey())
}
func (gui *Gui) address() []byte {
return gui.eth.KeyManager().Address()
}
func (gui *Gui) RegisterName(name string) {
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name = fmt.Sprintf("\"register\"\n\"%s\"", name)
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gui.pub.Transact(gui.privateKey(), "NameReg", "", "10000", "10000000000000", name)
}
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func (gui *Gui) Transact(recipient, value, gas, gasPrice, data string) (*ethpub.PReceipt, error) {
return gui.pub.Transact(gui.privateKey(), recipient, value, gas, gasPrice, data)
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}
func (gui *Gui) Create(recipient, value, gas, gasPrice, data string) (*ethpub.PReceipt, error) {
return gui.pub.Transact(gui.privateKey(), recipient, value, gas, gasPrice, data)
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}
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func (gui *Gui) SetCustomIdentifier(customIdentifier string) {
gui.clientIdentity.SetCustomIdentifier(customIdentifier)
gui.config.Save("id", customIdentifier)
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}
func (gui *Gui) GetCustomIdentifier() string {
return gui.clientIdentity.GetCustomIdentifier()
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}
// functions that allow Gui to implement interface ethlog.LogSystem
func (gui *Gui) SetLogLevel(level ethlog.LogLevel) {
gui.logLevel = level
gui.config.Save("loglevel", level)
}
func (gui *Gui) GetLogLevel() ethlog.LogLevel {
return gui.logLevel
}
// this extra function needed to give int typecast value to gui widget
// that sets initial loglevel to default
func (gui *Gui) GetLogLevelInt() int {
return int(gui.logLevel)
}
func (gui *Gui) Println(v ...interface{}) {
gui.printLog(fmt.Sprintln(v...))
}
func (gui *Gui) Printf(format string, v ...interface{}) {
gui.printLog(fmt.Sprintf(format, v...))
}
// Print function that logs directly to the GUI
func (gui *Gui) printLog(s string) {
str := strings.TrimRight(s, "\n")
lines := strings.Split(str, "\n")
for _, line := range lines {
gui.win.Root().Call("addLog", line)
}
}