package main import ( "bytes" "fmt" "github.com/ethereum/eth-go" "github.com/ethereum/eth-go/ethchain" "github.com/ethereum/eth-go/ethdb" "github.com/ethereum/eth-go/ethlog" "github.com/ethereum/eth-go/ethpub" "github.com/ethereum/eth-go/ethutil" "github.com/ethereum/eth-go/ethwire" "github.com/ethereum/go-ethereum/utils" "github.com/go-qml/qml" "math/big" "strings" "time" ) var logger = ethlog.NewLogger("GUI") type Gui struct { // The main application window win *qml.Window // QML Engine engine *qml.Engine component *qml.Common // The ethereum interface eth *eth.Ethereum // The public Ethereum library uiLib *UiLib txDb *ethdb.LDBDatabase pub *ethpub.PEthereum logLevel ethlog.LogLevel open bool Session string clientIdentity *ethwire.SimpleClientIdentity config *ethutil.ConfigManager } // Create GUI, but doesn't start it func NewWindow(ethereum *eth.Ethereum, config *ethutil.ConfigManager, clientIdentity *ethwire.SimpleClientIdentity, session string, logLevel int) *Gui { db, err := ethdb.NewLDBDatabase("tx_database") if err != nil { panic(err) } pub := ethpub.NewPEthereum(ethereum) return &Gui{eth: ethereum, txDb: db, pub: pub, logLevel: ethlog.LogLevel(logLevel), Session: session, open: false, clientIdentity: clientIdentity, config: config} } func (gui *Gui) Start(assetPath string) { defer gui.txDb.Close() // Register ethereum functions qml.RegisterTypes("Ethereum", 1, 0, []qml.TypeSpec{{ Init: func(p *ethpub.PBlock, obj qml.Object) { p.Number = 0; p.Hash = "" }, }, { 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 = "" }, }}) // Create a new QML engine gui.engine = qml.NewEngine() context := gui.engine.Context() // Expose the eth library and the ui library to QML context.SetVar("eth", gui) context.SetVar("pub", gui.pub) gui.uiLib = NewUiLib(gui.engine, gui.eth, assetPath) context.SetVar("ui", gui.uiLib) // Load the main QML interface data, _ := ethutil.Config.Db.Get([]byte("KeyRing")) var win *qml.Window var err error var addlog = false if len(data) == 0 { win, err = gui.showKeyImport(context) } else { win, err = gui.showWallet(context) addlog = true } if err != nil { logger.Errorln("asset not found: you can set an alternative asset path on the command line using option 'asset_path'", err) 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) } 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") } func (gui *Gui) ToggleMining() { var txt string if gui.eth.Mining { utils.StopMining(gui.eth) txt = "Start mining" } else { utils.StartMining(gui.eth) txt = "Stop mining" } gui.win.Root().Set("miningButtonText", txt) } 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 } win := gui.createWindow(component) gui.setInitialBlockChain() gui.loadAddressBook() gui.readPreviousTransactions() gui.setPeerInfo() go gui.update() return win, nil } func (gui *Gui) showKeyImport(context *qml.Context) (*qml.Window, error) { context.SetVar("lib", gui) 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 } 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() } func (gui *Gui) setInitialBlockChain() { sBlk := gui.eth.BlockChain().LastBlockHash blk := gui.eth.BlockChain().GetBlock(sBlk) 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()) } } } gui.processBlock(blk, true) } } type address struct { Name, Address string } func (gui *Gui) loadAddressBook() { gui.win.Root().Call("clearAddress") nameReg := ethpub.EthereumConfig(gui.eth.StateManager()).NameReg() if nameReg != nil { nameReg.State().EachStorage(func(name string, value *ethutil.Value) { if name[0] != 0 { gui.win.Root().Call("addAddress", struct{ Name, Address string }{name, ethutil.Bytes2Hex(value.Bytes())}) } }) } } func (gui *Gui) readPreviousTransactions() { it := gui.txDb.Db().NewIterator(nil, nil) addr := gui.address() for it.Next() { tx := ethchain.NewTransactionFromBytes(it.Value()) var inout string if bytes.Compare(tx.Sender(), addr) == 0 { inout = "send" } else { inout = "recv" } gui.win.Root().Call("addTx", ethpub.NewPTx(tx), inout) } it.Release() } func (gui *Gui) processBlock(block *ethchain.Block, initial bool) { gui.win.Root().Call("addBlock", ethpub.NewPBlock(block), initial) } func (gui *Gui) setWalletValue(amount, unconfirmedFunds *big.Int) { var str string if unconfirmedFunds != nil { pos := "+" 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) } // Simple go routine function that updates the list of peers in the GUI func (gui *Gui) update() { reactor := gui.eth.Reactor() blockChan := make(chan ethutil.React, 1) txChan := make(chan ethutil.React, 1) objectChan := make(chan ethutil.React, 1) peerChan := make(chan ethutil.React, 1) reactor.Subscribe("newBlock", blockChan) reactor.Subscribe("newTx:pre", txChan) reactor.Subscribe("newTx:post", txChan) nameReg := ethpub.EthereumConfig(gui.eth.StateManager()).NameReg() if nameReg != nil { reactor.Subscribe("object:"+string(nameReg.Address()), objectChan) } reactor.Subscribe("peerList", peerChan) ticker := time.NewTicker(5 * time.Second) state := gui.eth.StateManager().TransState() unconfirmedFunds := new(big.Int) gui.win.Root().Call("setWalletValue", fmt.Sprintf("%v", ethutil.CurrencyToString(state.GetAccount(gui.address()).Amount))) for { select { case b := <-blockChan: block := b.Resource.(*ethchain.Block) gui.processBlock(block, false) if bytes.Compare(block.Coinbase, gui.address()) == 0 { gui.setWalletValue(gui.eth.StateManager().CurrentState().GetAccount(gui.address()).Amount, nil) } case txMsg := <-txChan: tx := txMsg.Resource.(*ethchain.Transaction) if txMsg.Event == "newTx:pre" { object := state.GetAccount(gui.address()) if bytes.Compare(tx.Sender(), gui.address()) == 0 { gui.win.Root().Call("addTx", ethpub.NewPTx(tx), "send") gui.txDb.Put(tx.Hash(), tx.RlpEncode()) unconfirmedFunds.Sub(unconfirmedFunds, tx.Value) } else if bytes.Compare(tx.Recipient, gui.address()) == 0 { gui.win.Root().Call("addTx", ethpub.NewPTx(tx), "recv") gui.txDb.Put(tx.Hash(), tx.RlpEncode()) unconfirmedFunds.Add(unconfirmedFunds, tx.Value) } gui.setWalletValue(object.Amount, unconfirmedFunds) } else { object := state.GetAccount(gui.address()) if bytes.Compare(tx.Sender(), gui.address()) == 0 { object.SubAmount(tx.Value) } else if bytes.Compare(tx.Recipient, gui.address()) == 0 { object.AddAmount(tx.Value) } gui.setWalletValue(object.Amount, nil) state.UpdateStateObject(object) } case <-objectChan: gui.loadAddressBook() case <-peerChan: gui.setPeerInfo() case <-ticker.C: gui.setPeerInfo() } } } func (gui *Gui) setPeerInfo() { gui.win.Root().Call("setPeers", fmt.Sprintf("%d / %d", gui.eth.PeerCount(), gui.eth.MaxPeers)) gui.win.Root().Call("resetPeers") for _, peer := range gui.pub.GetPeers() { gui.win.Root().Call("addPeer", peer) } } 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) { name = fmt.Sprintf("\"register\"\n\"%s\"", name) gui.pub.Transact(gui.privateKey(), "NameReg", "", "10000", "10000000000000", name) } func (gui *Gui) Transact(recipient, value, gas, gasPrice, data string) (*ethpub.PReceipt, error) { return gui.pub.Transact(gui.privateKey(), recipient, value, gas, gasPrice, data) } func (gui *Gui) Create(recipient, value, gas, gasPrice, data string) (*ethpub.PReceipt, error) { return gui.pub.Transact(gui.privateKey(), recipient, value, gas, gasPrice, data) } func (gui *Gui) SetCustomIdentifier(customIdentifier string) { gui.clientIdentity.SetCustomIdentifier(customIdentifier) gui.config.Save("id", customIdentifier) } func (gui *Gui) GetCustomIdentifier() string { return gui.clientIdentity.GetCustomIdentifier() } // 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) } }