forked from cerc-io/plugeth
411 lines
10 KiB
Go
411 lines
10 KiB
Go
package main
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import (
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"bytes"
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"fmt"
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"github.com/ethereum/eth-go"
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"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/ethpub"
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"github.com/ethereum/eth-go/ethutil"
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"github.com/ethereum/go-ethereum/utils"
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"github.com/go-qml/qml"
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"math/big"
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"strings"
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"time"
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)
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var logger = ethlog.NewLogger("GUI")
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type Gui struct {
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// The main application window
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win *qml.Window
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// QML Engine
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engine *qml.Engine
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component *qml.Common
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// The ethereum interface
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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
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logLevel ethlog.LogLevel
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open bool
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Session string
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}
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// Create GUI, but doesn't start it
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func NewWindow(ethereum *eth.Ethereum, session string, logLevel int) *Gui {
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db, err := ethdb.NewLDBDatabase("tx_database")
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if err != nil {
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panic(err)
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}
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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}
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}
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func (gui *Gui) Start(assetPath string) {
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const version = "0.5.16"
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defer gui.txDb.Close()
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// Register ethereum functions
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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 = "" },
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}, {
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Init: func(p *ethpub.KeyVal, obj qml.Object) { p.Key = ""; p.Value = "" },
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}})
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ethutil.Config.SetClientString("Ethereal")
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// Create a new QML engine
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gui.engine = qml.NewEngine()
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context := gui.engine.Context()
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// 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)
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context.SetVar("ui", gui.uiLib)
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// Load the main QML interface
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data, _ := ethutil.Config.Db.Get([]byte("KeyRing"))
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var win *qml.Window
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var err error
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var addlog = false
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if len(data) == 0 {
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win, err = gui.showKeyImport(context)
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} else {
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win, err = gui.showWallet(context)
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addlog = true
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}
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if err != nil {
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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)
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}
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logger.Infoln("Starting GUI")
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gui.open = true
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win.Show()
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// only add the gui logger after window is shown otherwise slider wont be shown
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if addlog {
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ethlog.AddLogSystem(gui)
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}
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win.Wait()
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// need to silence gui logger after window closed otherwise logsystem hangs
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gui.SetLogLevel(ethlog.Silence)
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gui.open = false
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}
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func (gui *Gui) Stop() {
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if gui.open {
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gui.SetLogLevel(ethlog.Silence)
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gui.open = false
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gui.win.Hide()
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}
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logger.Infoln("Stopped")
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}
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func (gui *Gui) ToggleMining() {
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var txt string
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if gui.eth.Mining {
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utils.StopMining(gui.eth)
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txt = "Start mining"
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} else {
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utils.StartMining(gui.eth)
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txt = "Stop mining"
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}
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gui.win.Root().Set("miningButtonText", txt)
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}
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func (gui *Gui) showWallet(context *qml.Context) (*qml.Window, error) {
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component, err := gui.engine.LoadFile(gui.uiLib.AssetPath("qml/wallet.qml"))
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if err != nil {
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return nil, err
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}
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win := gui.createWindow(component)
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gui.setInitialBlockChain()
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gui.loadAddressBook()
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gui.readPreviousTransactions()
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gui.setPeerInfo()
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go gui.update()
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return win, nil
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}
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func (gui *Gui) showKeyImport(context *qml.Context) (*qml.Window, error) {
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context.SetVar("lib", gui)
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component, err := gui.engine.LoadFile(gui.uiLib.AssetPath("qml/first_run.qml"))
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if err != nil {
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return nil, err
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}
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return gui.createWindow(component), nil
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}
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func (gui *Gui) createWindow(comp qml.Object) *qml.Window {
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win := comp.CreateWindow(nil)
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gui.win = win
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gui.uiLib.win = win
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return gui.win
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}
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func (gui *Gui) ImportAndSetPrivKey(secret string) bool {
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err := gui.eth.KeyManager().InitFromString(gui.Session, 0, secret)
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if err != nil {
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logger.Errorln("unable to import: ", err)
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return false
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}
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logger.Errorln("successfully imported: ", err)
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return true
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}
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func (gui *Gui) CreateAndSetPrivKey() (string, string, string, string) {
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err := gui.eth.KeyManager().Init(gui.Session, 0, true)
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if err != nil {
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logger.Errorln("unable to create key: ", err)
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return "", "", "", ""
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}
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return gui.eth.KeyManager().KeyPair().AsStrings()
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}
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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) {
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sBlk = blk.PrevHash
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addr := gui.address()
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// Loop through all transactions to see if we missed any while being offline
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for _, tx := range blk.Transactions() {
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if bytes.Compare(tx.Sender(), addr) == 0 || bytes.Compare(tx.Recipient, addr) == 0 {
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if ok, _ := gui.txDb.Get(tx.Hash()); ok == nil {
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gui.txDb.Put(tx.Hash(), tx.RlpEncode())
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}
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}
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}
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gui.processBlock(blk, true)
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}
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}
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type address struct {
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Name, Address string
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}
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func (gui *Gui) loadAddressBook() {
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gui.win.Root().Call("clearAddress")
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nameReg := ethpub.EthereumConfig(gui.eth.StateManager()).NameReg()
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if nameReg != nil {
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nameReg.State().EachStorage(func(name string, value *ethutil.Value) {
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if name[0] != 0 {
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gui.win.Root().Call("addAddress", struct{ Name, Address string }{name, ethutil.Bytes2Hex(value.Bytes())})
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}
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})
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}
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}
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func (gui *Gui) readPreviousTransactions() {
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it := gui.txDb.Db().NewIterator(nil, nil)
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addr := gui.address()
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for it.Next() {
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tx := ethchain.NewTransactionFromBytes(it.Value())
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var inout string
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if bytes.Compare(tx.Sender(), addr) == 0 {
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inout = "send"
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} else {
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inout = "recv"
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}
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gui.win.Root().Call("addTx", ethpub.NewPTx(tx), inout)
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}
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it.Release()
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}
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func (gui *Gui) processBlock(block *ethchain.Block, initial bool) {
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gui.win.Root().Call("addBlock", ethpub.NewPBlock(block), initial)
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}
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func (gui *Gui) setWalletValue(amount, unconfirmedFunds *big.Int) {
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var str string
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if unconfirmedFunds != nil {
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pos := "+"
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if unconfirmedFunds.Cmp(big.NewInt(0)) < 0 {
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pos = "-"
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}
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val := ethutil.CurrencyToString(new(big.Int).Abs(ethutil.BigCopy(unconfirmedFunds)))
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str = fmt.Sprintf("%v (%s %v)", ethutil.CurrencyToString(amount), pos, val)
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} else {
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str = fmt.Sprintf("%v", ethutil.CurrencyToString(amount))
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}
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gui.win.Root().Call("setWalletValue", str)
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}
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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() {
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reactor := gui.eth.Reactor()
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blockChan := make(chan ethutil.React, 1)
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txChan := make(chan ethutil.React, 1)
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objectChan := make(chan ethutil.React, 1)
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peerChan := make(chan ethutil.React, 1)
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reactor.Subscribe("newBlock", blockChan)
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reactor.Subscribe("newTx:pre", txChan)
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reactor.Subscribe("newTx:post", txChan)
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nameReg := ethpub.EthereumConfig(gui.eth.StateManager()).NameReg()
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if nameReg != nil {
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reactor.Subscribe("object:"+string(nameReg.Address()), objectChan)
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}
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reactor.Subscribe("peerList", peerChan)
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ticker := time.NewTicker(5 * time.Second)
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state := gui.eth.StateManager().TransState()
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unconfirmedFunds := new(big.Int)
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gui.win.Root().Call("setWalletValue", fmt.Sprintf("%v", ethutil.CurrencyToString(state.GetAccount(gui.address()).Amount)))
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for {
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select {
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case b := <-blockChan:
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block := b.Resource.(*ethchain.Block)
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gui.processBlock(block, false)
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if bytes.Compare(block.Coinbase, gui.address()) == 0 {
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gui.setWalletValue(gui.eth.StateManager().CurrentState().GetAccount(gui.address()).Amount, nil)
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}
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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" {
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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())
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unconfirmedFunds.Sub(unconfirmedFunds, tx.Value)
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} 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())
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unconfirmedFunds.Add(unconfirmedFunds, tx.Value)
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}
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gui.setWalletValue(object.Amount, unconfirmedFunds)
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} else {
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object := state.GetAccount(gui.address())
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if bytes.Compare(tx.Sender(), gui.address()) == 0 {
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object.SubAmount(tx.Value)
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} else if bytes.Compare(tx.Recipient, gui.address()) == 0 {
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object.AddAmount(tx.Value)
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}
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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 <-objectChan:
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gui.loadAddressBook()
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case <-peerChan:
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gui.setPeerInfo()
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case <-ticker.C:
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gui.setPeerInfo()
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}
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}
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}
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func (gui *Gui) setPeerInfo() {
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gui.win.Root().Call("setPeers", fmt.Sprintf("%d / %d", gui.eth.PeerCount(), gui.eth.MaxPeers))
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gui.win.Root().Call("resetPeers")
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for _, peer := range gui.pub.GetPeers() {
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gui.win.Root().Call("addPeer", peer)
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}
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}
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func (gui *Gui) privateKey() string {
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return ethutil.Bytes2Hex(gui.eth.KeyManager().PrivateKey())
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}
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func (gui *Gui) address() []byte {
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return gui.eth.KeyManager().Address()
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}
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func (gui *Gui) RegisterName(name string) {
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name = fmt.Sprintf("\"%s\"", name)
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gui.pub.Transact(gui.privateKey(), "NameReg", "", "10000", "10000000000000", name)
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}
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func (gui *Gui) Transact(recipient, value, gas, gasPrice, data string) (*ethpub.PReceipt, error) {
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return gui.pub.Transact(gui.privateKey(), recipient, value, gas, gasPrice, data)
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}
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func (gui *Gui) Create(recipient, value, gas, gasPrice, data string) (*ethpub.PReceipt, error) {
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return gui.pub.Transact(gui.privateKey(), recipient, value, gas, gasPrice, data)
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}
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func (gui *Gui) ChangeClientId(id string) {
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ethutil.Config.SetIdentifier(id)
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}
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func (gui *Gui) ClientId() string {
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return ethutil.Config.Identifier
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}
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// functions that allow Gui to implement interface ethlog.LogSystem
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func (gui *Gui) SetLogLevel(level ethlog.LogLevel) {
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gui.logLevel = level
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}
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func (gui *Gui) GetLogLevel() ethlog.LogLevel {
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return gui.logLevel
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}
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// this extra function needed to give int typecast value to gui widget
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// that sets initial loglevel to default
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func (gui *Gui) GetLogLevelInt() int {
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return int(gui.logLevel)
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}
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func (gui *Gui) Println(v ...interface{}) {
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gui.printLog(fmt.Sprintln(v...))
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}
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func (gui *Gui) Printf(format string, v ...interface{}) {
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gui.printLog(fmt.Sprintf(format, v...))
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}
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// Print function that logs directly to the GUI
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func (gui *Gui) printLog(s string) {
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str := strings.TrimRight(s, "\n")
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lines := strings.Split(str, "\n")
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for _, line := range lines {
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gui.win.Root().Call("addLog", line)
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}
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}
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