Moved Ext ethereum api

Moved the external ethereum api which can be used by any 3rd party
application.

2 files changed, 124 insertions, 17 deletions

diff --git a/utils/ethereum.go b/utils/ethereum.go
new file mode 100644
index 000000000..c383c4c91
--- /dev/null
+++ b/utils/ethereum.go
@@ -0,0 +1,107 @@
+package utils
+
+import (
+	"github.com/ethereum/eth-go"
+	"github.com/ethereum/eth-go/ethchain"
+	"github.com/ethereum/eth-go/ethutil"
+)
+
+type PEthereum struct {
+	stateManager *ethchain.StateManager
+	blockChain   *ethchain.BlockChain
+	txPool       *ethchain.TxPool
+}
+
+func NewPEthereum(eth *eth.Ethereum) *PEthereum {
+	return &PEthereum{
+		eth.StateManager(),
+		eth.BlockChain(),
+		eth.TxPool(),
+	}
+}
+
+func (lib *PEthereum) GetBlock(hexHash string) *PBlock {
+	hash := ethutil.FromHex(hexHash)
+
+	block := lib.blockChain.GetBlock(hash)
+
+	return &PBlock{Number: int(block.BlockInfo().Number), Hash: ethutil.Hex(block.Hash())}
+}
+
+func (lib *PEthereum) GetKey() string {
+	return ethutil.Hex(ethutil.Config.Db.GetKeys()[0].Address())
+}
+
+func (lib *PEthereum) GetStateObject(address string) *PStateObject {
+	stateObject := lib.stateManager.ProcState().GetContract(ethutil.FromHex(address))
+	if stateObject != nil {
+		return NewPStateObject(stateObject)
+	}
+
+	// See GetStorage for explanation on "nil"
+	return NewPStateObject(nil)
+}
+
+func (lib *PEthereum) Transact(key, recipient, valueStr, gasStr, gasPriceStr, dataStr string) (string, error) {
+	return lib.createTx(key, recipient, valueStr, gasStr, gasPriceStr, dataStr, "")
+}
+
+func (lib *PEthereum) Create(key, valueStr, gasStr, gasPriceStr, initStr, bodyStr string) (string, error) {
+	return lib.createTx(key, "", valueStr, gasStr, gasPriceStr, initStr, bodyStr)
+}
+
+func (lib *PEthereum) createTx(key, recipient, valueStr, gasStr, gasPriceStr, initStr, scriptStr string) (string, error) {
+	var hash []byte
+	var contractCreation bool
+	if len(recipient) == 0 {
+		contractCreation = true
+	} else {
+		hash = ethutil.FromHex(recipient)
+	}
+
+	keyPair, err := ethchain.NewKeyPairFromSec([]byte(key))
+	if err != nil {
+		return "", err
+	}
+
+	value := ethutil.Big(valueStr)
+	gas := ethutil.Big(gasStr)
+	gasPrice := ethutil.Big(gasPriceStr)
+	var tx *ethchain.Transaction
+	// Compile and assemble the given data
+	if contractCreation {
+		initScript, err := Compile(initStr)
+		if err != nil {
+			return "", err
+		}
+		mainScript, err := Compile(scriptStr)
+		if err != nil {
+			return "", err
+		}
+
+		tx = ethchain.NewContractCreationTx(value, gas, gasPrice, mainScript, initScript)
+	} else {
+		/*
+			lines := strings.Split(dataStr, "\n")
+			var data []byte
+			for _, line := range lines {
+				data = append(data, ethutil.BigToBytes(ethutil.Big(line), 256)...)
+			}
+		*/
+
+		tx = ethchain.NewTransactionMessage(hash, value, gas, gasPrice, []byte(initStr))
+	}
+
+	acc := lib.stateManager.GetAddrState(keyPair.Address())
+	tx.Nonce = acc.Nonce
+	tx.Sign(keyPair.PrivateKey)
+	lib.txPool.QueueTransaction(tx)
+
+	if contractCreation {
+		ethutil.Config.Log.Infof("Contract addr %x", tx.Hash()[12:])
+	} else {
+		ethutil.Config.Log.Infof("Tx hash %x", tx.Hash())
+	}
+
+	return ethutil.Hex(tx.Hash()), nil
+}
diff --git a/ethereal/ui/types.go b/utils/types.go
index 9e12a8892..44264aa5e 100644
--- a/ethereal/ui/types.go
+++ b/utils/types.go
@@ -1,4 +1,4 @@
-package ethui
+package utils
 
 import (
 	"encoding/hex"
@@ -7,53 +7,53 @@ import (
 )
 
 // Block interface exposed to QML
-type QBlock struct {
+type PBlock struct {
 	Number int
 	Hash   string
 }
 
 // Creates a new QML Block from a chain block
-func NewQBlock(block *ethchain.Block) *QBlock {
+func NewPBlock(block *ethchain.Block) *PBlock {
 	info := block.BlockInfo()
 	hash := hex.EncodeToString(block.Hash())
 
-	return &QBlock{Number: int(info.Number), Hash: hash}
+	return &PBlock{Number: int(info.Number), Hash: hash}
 }
 
-type QTx struct {
+type PTx struct {
 	Value, Hash, Address string
 	Contract             bool
 }
 
-func NewQTx(tx *ethchain.Transaction) *QTx {
+func NewPTx(tx *ethchain.Transaction) *PTx {
 	hash := hex.EncodeToString(tx.Hash())
 	sender := hex.EncodeToString(tx.Recipient)
 	isContract := len(tx.Data) > 0
 
-	return &QTx{Hash: hash, Value: ethutil.CurrencyToString(tx.Value), Address: sender, Contract: isContract}
+	return &PTx{Hash: hash, Value: ethutil.CurrencyToString(tx.Value), Address: sender, Contract: isContract}
 }
 
-type QKey struct {
+type PKey struct {
 	Address string
 }
 
-type QKeyRing struct {
+type PKeyRing struct {
 	Keys []interface{}
 }
 
-func NewQKeyRing(keys []interface{}) *QKeyRing {
-	return &QKeyRing{Keys: keys}
+func NewPKeyRing(keys []interface{}) *PKeyRing {
+	return &PKeyRing{Keys: keys}
 }
 
-type QStateObject struct {
+type PStateObject struct {
 	object *ethchain.StateObject
 }
 
-func NewQStateObject(object *ethchain.StateObject) *QStateObject {
-	return &QStateObject{object: object}
+func NewPStateObject(object *ethchain.StateObject) *PStateObject {
+	return &PStateObject{object: object}
 }
 
-func (c *QStateObject) GetStorage(address string) string {
+func (c *PStateObject) GetStorage(address string) string {
 	// Because somehow, even if you return nil to QML it
 	// still has some magical object so we can't rely on
 	// undefined or null at the QML side
@@ -66,7 +66,7 @@ func (c *QStateObject) GetStorage(address string) string {
 	return ""
 }
 
-func (c *QStateObject) Value() string {
+func (c *PStateObject) Value() string {
 	if c.object != nil {
 		return c.object.Amount.String()
 	}
@@ -74,7 +74,7 @@ func (c *QStateObject) Value() string {
 	return ""
 }
 
-func (c *QStateObject) Address() string {
+func (c *PStateObject) Address() string {
 	if c.object != nil {
 		return ethutil.Hex(c.object.Address())
 	}