path: root/cmd/mist/ui_lib.go

// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
// MA 02110-1301  USA

package main

import (
    "bytes"
    "fmt"
    "path"
    "strconv"
    "strings"

    "github.com/ethereum/go-ethereum/core"
    "github.com/ethereum/go-ethereum/core/types"
    "github.com/ethereum/go-ethereum/crypto"
    "github.com/ethereum/go-ethereum/eth"
    "github.com/ethereum/go-ethereum/ethutil"
    "github.com/ethereum/go-ethereum/event/filter"
    "github.com/ethereum/go-ethereum/javascript"
    "github.com/ethereum/go-ethereum/miner"
    "github.com/ethereum/go-ethereum/state"
    "github.com/ethereum/go-ethereum/ui/qt"
    "github.com/ethereum/go-ethereum/xeth"
    "gopkg.in/qml.v1"
)

type memAddr struct {
    Num   string
    Value string
}

// UI Library that has some basic functionality exposed
type UiLib struct {
    *xeth.JSXEth
    engine    *qml.Engine
    eth       *eth.Ethereum
    connected bool
    assetPath string
    // The main application window
    win      *qml.Window
    Db       *Debugger
    DbWindow *DebuggerWindow

    jsEngine *javascript.JSRE

    filterCallbacks map[int][]int
    filterManager   *filter.FilterManager

    miner *miner.Miner
}

func NewUiLib(engine *qml.Engine, eth *eth.Ethereum, assetPath string) *UiLib {
    lib := &UiLib{JSXEth: xeth.NewJSXEth(eth), engine: engine, eth: eth, assetPath: assetPath, jsEngine: javascript.NewJSRE(eth), filterCallbacks: make(map[int][]int)} //, filters: make(map[int]*xeth.JSFilter)}
    lib.miner = miner.New(eth.KeyManager().Address(), eth)
    lib.filterManager = filter.NewFilterManager(eth.EventMux())

    return lib
}

func (self *UiLib) Notef(args []interface{}) {
    guilogger.Infoln(args...)
}

func (self *UiLib) LookupDomain(domain string) string {
    world := self.World()

    if len(domain) > 32 {
        domain = string(crypto.Sha3([]byte(domain)))
    }
    data := world.Config().Get("DnsReg").StorageString(domain).Bytes()

    // Left padded = A record, Right padded = CNAME
    if len(data) > 0 && data[0] == 0 {
        data = bytes.TrimLeft(data, "\x00")
        var ipSlice []string
        for _, d := range data {
            ipSlice = append(ipSlice, strconv.Itoa(int(d)))
        }

        return strings.Join(ipSlice, ".")
    } else {
        data = bytes.TrimRight(data, "\x00")

        return string(data)
    }
}

func (self *UiLib) LookupName(addr string) string {
    var (
        nameReg = self.World().Config().Get("NameReg")
        lookup  = nameReg.Storage(ethutil.Hex2Bytes(addr))
    )

    if lookup.Len() != 0 {
        return strings.Trim(lookup.Str(), "\x00")
    }

    return addr
}

func (self *UiLib) LookupAddress(name string) string {
    var (
        nameReg = self.World().Config().Get("NameReg")
        lookup  = nameReg.Storage(ethutil.RightPadBytes([]byte(name), 32))
    )

    if lookup.Len() != 0 {
        return ethutil.Bytes2Hex(lookup.Bytes())
    }

    return ""
}

func (self *UiLib) PastPeers() *ethutil.List {
    return ethutil.NewList([]string{})
    //return ethutil.NewList(eth.PastPeers())
}

func (self *UiLib) ImportTx(rlpTx string) {
    tx := types.NewTransactionFromBytes(ethutil.Hex2Bytes(rlpTx))
    err := self.eth.TxPool().Add(tx)
    if err != nil {
        guilogger.Infoln("import tx failed ", err)
    }
}

func (self *UiLib) EvalJavascriptFile(path string) {
    self.jsEngine.LoadExtFile(path[7:])
}

func (self *UiLib) EvalJavascriptString(str string) string {
    value, err := self.jsEngine.Run(str)
    if err != nil {
        return err.Error()
    }

    return fmt.Sprintf("%v", value)
}

func (ui *UiLib) OpenQml(path string) {
    container := NewQmlApplication(path[7:], ui)
    app := NewExtApplication(container, ui)

    go app.run()
}

func (ui *UiLib) OpenHtml(path string) {
    container := NewHtmlApplication(path, ui)
    app := NewExtApplication(container, ui)

    go app.run()
}

func (ui *UiLib) OpenBrowser() {
    ui.OpenHtml("file://" + ui.AssetPath("ext/home.html"))
}

func (ui *UiLib) Muted(content string) {
    component, err := ui.engine.LoadFile(ui.AssetPath("qml/muted.qml"))
    if err != nil {
        guilogger.Debugln(err)

        return
    }
    win := component.CreateWindow(nil)
    go func() {
        path := "file://" + ui.AssetPath("muted/index.html")
        win.Set("url", path)

        win.Show()
        win.Wait()
    }()
}

func (ui *UiLib) Connect(button qml.Object) {
    if !ui.connected {
        ui.eth.Start(true)
        ui.connected = true
        button.Set("enabled", false)
    }
}

func (ui *UiLib) ConnectToPeer(addr string) {
    ui.eth.SuggestPeer(addr)
}

func (ui *UiLib) AssetPath(p string) string {
    return path.Join(ui.assetPath, p)
}

func (self *UiLib) StartDbWithContractAndData(contractHash, data string) {
    dbWindow := NewDebuggerWindow(self)
    object := self.eth.ChainManager().State().GetStateObject(ethutil.Hex2Bytes(contractHash))
    if len(object.Code) > 0 {
        dbWindow.SetCode("0x" + ethutil.Bytes2Hex(object.Code))
    }
    dbWindow.SetData("0x" + data)

    dbWindow.Show()
}

func (self *UiLib) StartDbWithCode(code string) {
    dbWindow := NewDebuggerWindow(self)
    dbWindow.SetCode("0x" + code)
    dbWindow.Show()
}

func (self *UiLib) StartDebugger() {
    dbWindow := NewDebuggerWindow(self)

    dbWindow.Show()
}

func (self *UiLib) Transact(params map[string]interface{}) (string, error) {
    object := mapToTxParams(params)

    return self.JSXEth.Transact(
        object["from"],
        object["to"],
        object["value"],
        object["gas"],
        object["gasPrice"],
        object["data"],
    )
}

func (self *UiLib) Compile(code string) (string, error) {
    bcode, err := ethutil.Compile(code, false)
    if err != nil {
        return err.Error(), err
    }

    return ethutil.Bytes2Hex(bcode), err
}

func (self *UiLib) Call(params map[string]interface{}) (string, error) {
    object := mapToTxParams(params)

    return self.JSXEth.Execute(
        object["to"],
        object["value"],
        object["gas"],
        object["gasPrice"],
        object["data"],
    )
}

func (self *UiLib) AddLocalTransaction(to, data, gas, gasPrice, value string) int {
    return self.miner.AddLocalTx(&miner.LocalTx{
        To:       ethutil.Hex2Bytes(to),
        Data:     ethutil.Hex2Bytes(data),
        Gas:      gas,
        GasPrice: gasPrice,
        Value:    value,
    }) - 1
}

func (self *UiLib) RemoveLocalTransaction(id int) {
    self.miner.RemoveLocalTx(id)
}

func (self *UiLib) SetGasPrice(price string) {
    self.miner.MinAcceptedGasPrice = ethutil.Big(price)
}

func (self *UiLib) ToggleMining() bool {
    if !self.miner.Mining() {
        self.miner.Start()

        return true
    } else {
        self.miner.Stop()

        return false
    }
}

func (self *UiLib) ToHex(data string) string {
    return "0x" + ethutil.Bytes2Hex([]byte(data))
}

func (self *UiLib) ToAscii(data string) string {
    start := 0
    if len(data) > 1 && data[0:2] == "0x" {
        start = 2
    }
    return string(ethutil.Hex2Bytes(data[start:]))
}

/// Ethereum filter methods
func (self *UiLib) NewFilter(object map[string]interface{}) (id int) {
    filter := qt.NewFilterFromMap(object, self.eth)
    filter.MessageCallback = func(messages state.Messages) {
        self.win.Root().Call("invokeFilterCallback", xeth.ToJSMessages(messages), id)
    }
    id = self.filterManager.InstallFilter(filter)
    return id
}

func (self *UiLib) NewFilterString(typ string) (id int) {
    filter := core.NewFilter(self.eth)
    filter.BlockCallback = func(block *types.Block) {
        if self.win != nil && self.win.Root() != nil {
            self.win.Root().Call("invokeFilterCallback", "{}", id)
        } else {
            fmt.Println("QML is lagging")
        }
    }
    id = self.filterManager.InstallFilter(filter)
    return id
}

func (self *UiLib) Messages(id int) *ethutil.List {
    filter := self.filterManager.GetFilter(id)
    if filter != nil {
        messages := xeth.ToJSMessages(filter.Find())

        return messages
    }

    return ethutil.EmptyList()
}

func (self *UiLib) UninstallFilter(id int) {
    self.filterManager.UninstallFilter(id)
}

func mapToTxParams(object map[string]interface{}) map[string]string {
    // Default values
    if object["from"] == nil {
        object["from"] = ""
    }
    if object["to"] == nil {
        object["to"] = ""
    }
    if object["value"] == nil {
        object["value"] = ""
    }
    if object["gas"] == nil {
        object["gas"] = ""
    }
    if object["gasPrice"] == nil {
        object["gasPrice"] = ""
    }

    var dataStr string
    var data []string
    if list, ok := object["data"].(*qml.List); ok {
        list.Convert(&data)
    } else if str, ok := object["data"].(string); ok {
        data = []string{str}
    }

    for _, str := range data {
        if ethutil.IsHex(str) {
            str = str[2:]

            if len(str) != 64 {
                str = ethutil.LeftPadString(str, 64)
            }
        } else {
            str = ethutil.Bytes2Hex(ethutil.LeftPadBytes(ethutil.Big(str).Bytes(), 32))
        }

        dataStr += str
    }
    object["data"] = dataStr

    conv := make(map[string]string)
    for key, value := range object {
        if v, ok := value.(string); ok {
            conv[key] = v
        }
    }

    return conv
}