Implemented key importing/generation for the GUI

ethereal/ui/gui.go

@@ -53,7 +53,6 @@ type Gui struct {
 	txDb *ethdb.LDBDatabase
 
 	addr []byte
-
 }
 
 // Create GUI, but doesn't start it
@@ -64,10 +63,16 @@ func New(ethereum *eth.Ethereum) *Gui {
 		panic(err)
 	}
 
-	key := ethutil.Config.Db.GetKeys()[0]
-	addr := key.Address()
+	data, _ := ethutil.Config.Db.Get([]byte("KeyRing"))
+	// On first run we won't have any keys yet, so this would crash.
+	// Therefor we check if we are ready to actually start this process
+	var addr []byte
+	if len(data) > 0 {
+		key := ethutil.Config.Db.GetKeys()[0]
+		addr = key.Address()
 
-	ethereum.StateManager().WatchAddr(addr)
+		ethereum.StateManager().WatchAddr(addr)
+	}
 
 	return &Gui{eth: ethereum, lib: lib, txDb: db, addr: addr}
 }
@@ -94,9 +99,18 @@ func (ui *Gui) Start(assetPath string) {
 	context.SetVar("ui", uiLib)
 
 	// Load the main QML interface
-	component, err := ui.engine.LoadFile(uiLib.AssetPath("qml/wallet.qml"))
+	data, _ := ethutil.Config.Db.Get([]byte("KeyRing"))
+	var err error
+	var component qml.Object
+	firstRun := len(data) == 0
+
+	if firstRun {
+		component, err = ui.engine.LoadFile(uiLib.AssetPath("qml/first_run.qml"))
+	} else {
+		component, err = ui.engine.LoadFile(uiLib.AssetPath("qml/wallet.qml"))
+	}
 	if err != nil {
-   	ethutil.Config.Log.Infoln("FATAL: asset not found: you can set an alternative asset path on on the command line using option 'asset_path'")
+		ethutil.Config.Log.Infoln("FATAL: asset not found: you can set an alternative asset path on on the command line using option 'asset_path'")
 		panic(err)
 	}
 	ui.engine.LoadFile(uiLib.AssetPath("qml/transactions.qml"))
@@ -111,9 +125,11 @@ func (ui *Gui) Start(assetPath string) {
 	ethutil.Config.Log.AddLogSystem(ui)
 
 	// Loads previous blocks
-	go ui.setInitialBlockChain()
-	go ui.readPreviousTransactions()
-	go ui.update()
+	if firstRun == false {
+		go ui.setInitialBlockChain()
+		go ui.readPreviousTransactions()
+		go ui.update()
+	}
 
 	ui.win.Show()
 	ui.win.Wait()

ethereal/ui/library.go

@@ -5,7 +5,9 @@ import (
 	"fmt"
 	"github.com/ethereum/eth-go/ethchain"
 	"github.com/ethereum/eth-go/ethutil"
+	"github.com/ethereum/go-ethereum/utils"
 	"github.com/obscuren/mutan"
+	"github.com/obscuren/secp256k1-go"
 	"strings"
 )
 
@@ -15,6 +17,32 @@ type EthLib struct {
 	txPool       *ethchain.TxPool
 }
 
+func (lib *EthLib) ImportAndSetPrivKey(privKey string) bool {
+	fmt.Println(privKey)
+	mnemonic := strings.Split(privKey, " ")
+	if len(mnemonic) == 24 {
+		fmt.Println("Got mnemonic key, importing.")
+		key := ethutil.MnemonicDecode(mnemonic)
+		utils.ImportPrivateKey(key)
+	} else if len(mnemonic) == 1 {
+		fmt.Println("Got hex key, importing.")
+		utils.ImportPrivateKey(privKey)
+	} else {
+		fmt.Println("Did not recognise format, exiting.")
+		return false
+	}
+	return true
+}
+
+func (lib *EthLib) CreateAndSetPrivKey() (string, string, string, string) {
+	pub, prv := secp256k1.GenerateKeyPair()
+	pair := &ethutil.Key{PrivateKey: prv, PublicKey: pub}
+	ethutil.Config.Db.Put([]byte("KeyRing"), pair.RlpEncode())
+	mne := ethutil.MnemonicEncode(ethutil.Hex(prv))
+	mnemonicString := strings.Join(mne, " ")
+	return mnemonicString, fmt.Sprintf("%x", pair.Address()), fmt.Sprintf("%x", prv), fmt.Sprintf("%x", pub)
+}
+
 func (lib *EthLib) CreateTx(recipient, valueStr, gasStr, gasPriceStr, data string) (string, error) {
 	var hash []byte
 	var contractCreation bool