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package ethui
import (
"bitbucket.org/kardianos/osext"
"fmt"
"github.com/ethereum/eth-go"
"github.com/ethereum/eth-go/ethchain"
"github.com/ethereum/eth-go/ethutil"
"github.com/ethereum/go-ethereum/utils"
"github.com/go-qml/qml"
"os"
"path"
"path/filepath"
"runtime"
)
type memAddr struct {
Num string
Value string
}
// UI Library that has some basic functionality exposed
type UiLib struct {
engine *qml.Engine
eth *eth.Ethereum
connected bool
assetPath string
// The main application window
win *qml.Window
Db *Debugger
}
func NewUiLib(engine *qml.Engine, eth *eth.Ethereum, assetPath string) *UiLib {
if assetPath == "" {
assetPath = DefaultAssetPath()
}
return &UiLib{engine: engine, eth: eth, assetPath: assetPath}
}
// Opens a QML file (external application)
func (ui *UiLib) Open(path string) {
component, err := ui.engine.LoadFile(path[7:])
if err != nil {
ethutil.Config.Log.Debugln(err)
}
win := component.CreateWindow(nil)
go func() {
win.Show()
win.Wait()
}()
}
func (ui *UiLib) OpenHtml(path string) {
component, err := ui.engine.LoadFile(ui.AssetPath("qml/webapp.qml"))
if err != nil {
ethutil.Config.Log.Debugln(err)
return
}
win := component.CreateWindow(nil)
if filepath.Ext(path) == "eth" {
fmt.Println("Ethereum package not yet supported")
return
// TODO
ethutil.OpenPackage(path)
}
win.Set("url", path)
go func() {
blockChan := make(chan ethutil.React, 1)
quitChan := make(chan bool)
go func() {
out:
for {
select {
case <-quitChan:
ui.eth.Reactor().Unsubscribe("newBlock", blockChan)
break out
case block := <-blockChan:
if block, ok := block.Resource.(*ethchain.Block); ok {
b := &Block{Number: int(block.BlockInfo().Number), Hash: ethutil.Hex(block.Hash())}
win.ObjectByName("webView").Call("onNewBlockCb", b)
}
}
}
// Clean up
close(blockChan)
close(quitChan)
}()
ui.eth.Reactor().Subscribe("newBlock", blockChan)
win.Show()
win.Wait()
quitChan <- true
}()
}
func (ui *UiLib) Connect(button qml.Object) {
if !ui.connected {
ui.eth.Start()
ui.connected = true
button.Set("enabled", false)
}
}
func (ui *UiLib) ConnectToPeer(addr string) {
ui.eth.ConnectToPeer(addr)
}
func (ui *UiLib) AssetPath(p string) string {
return path.Join(ui.assetPath, p)
}
func DefaultAssetPath() string {
var base string
// If the current working directory is the go-ethereum dir
// assume a debug build and use the source directory as
// asset directory.
pwd, _ := os.Getwd()
if pwd == path.Join(os.Getenv("GOPATH"), "src", "github.com", "ethereum", "go-ethereum", "ethereal") {
base = path.Join(pwd, "assets")
} else {
switch runtime.GOOS {
case "darwin":
// Get Binary Directory
exedir, _ := osext.ExecutableFolder()
base = filepath.Join(exedir, "../Resources")
case "linux":
base = "/usr/share/ethereal"
case "window":
fallthrough
default:
base = "."
}
}
return base
}
func (ui *UiLib) DebugTx(recipient, valueStr, gasStr, gasPriceStr, data string) {
state := ui.eth.BlockChain().CurrentBlock.State()
mainInput, _ := ethutil.PreProcess(data)
callerScript, err := utils.Compile(mainInput)
if err != nil {
ethutil.Config.Log.Debugln(err)
return
}
dis := ethchain.Disassemble(callerScript)
ui.win.Root().Call("clearAsm")
for _, str := range dis {
ui.win.Root().Call("setAsm", str)
}
callerTx := ethchain.NewContractCreationTx(ethutil.Big(valueStr), ethutil.Big(gasStr), ethutil.Big(gasPriceStr), callerScript, nil)
// Contract addr as test address
keyPair := ethutil.Config.Db.GetKeys()[0]
account := ui.eth.StateManager().GetAddrState(keyPair.Address()).Object
c := ethchain.MakeContract(callerTx, state)
callerClosure := ethchain.NewClosure(account, c, c.Script(), state, ethutil.Big(gasStr), ethutil.Big(gasPriceStr), ethutil.Big(valueStr))
block := ui.eth.BlockChain().CurrentBlock
vm := ethchain.NewVm(state, ethchain.RuntimeVars{
Origin: account.Address(),
BlockNumber: block.BlockInfo().Number,
PrevHash: block.PrevHash,
Coinbase: block.Coinbase,
Time: block.Time,
Diff: block.Difficulty,
TxData: nil,
})
go func() {
callerClosure.Call(vm, nil, ui.Db.halting)
state.Reset()
}()
}
func (ui *UiLib) Next() {
ui.Db.Next()
}
type Debugger struct {
win *qml.Window
N chan bool
}
func (d *Debugger) halting(pc int, op ethchain.OpCode, mem *ethchain.Memory, stack *ethchain.Stack) {
d.win.Root().Call("setInstruction", pc)
d.win.Root().Call("clearMem")
d.win.Root().Call("clearStack")
addr := 0
for i := 0; i+32 <= mem.Len(); i += 32 {
d.win.Root().Call("setMem", memAddr{fmt.Sprintf("%03d", addr), fmt.Sprintf("% x", mem.Data()[i:i+32])})
addr++
}
for _, val := range stack.Data() {
d.win.Root().Call("setStack", val.String())
}
out:
for {
select {
case <-d.N:
break out
default:
}
}
}
func (d *Debugger) Next() {
d.N <- true
}
|
