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package utils
import (
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/ethutil"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/websocket"
"github.com/ethereum/go-ethereum/xeth"
)
var wslogger = logger.NewLogger("WS")
func args(v ...interface{}) []interface{} {
return v
}
type WebSocketServer struct {
ethereum *eth.Ethereum
filterCallbacks map[int][]int
}
func NewWebSocketServer(eth *eth.Ethereum) *WebSocketServer {
return &WebSocketServer{eth, make(map[int][]int)}
}
func (self *WebSocketServer) Serv() {
pipe := xeth.NewJSXEth(self.ethereum)
wsServ := websocket.NewServer("/eth", ":40404")
wsServ.MessageFunc(func(c *websocket.Client, msg *websocket.Message) {
switch msg.Call {
case "compile":
data := ethutil.NewValue(msg.Args)
bcode, err := ethutil.Compile(data.Get(0).Str(), false)
if err != nil {
c.Write(args(nil, err.Error()), msg.Id)
}
code := ethutil.Bytes2Hex(bcode)
c.Write(args(code, nil), msg.Id)
case "eth_blockByNumber":
args := msg.Arguments()
block := pipe.BlockByNumber(int32(args.Get(0).Uint()))
c.Write(block, msg.Id)
case "eth_blockByHash":
args := msg.Arguments()
c.Write(pipe.BlockByHash(args.Get(0).Str()), msg.Id)
case "eth_transact":
if mp, ok := msg.Args[0].(map[string]interface{}); ok {
object := mapToTxParams(mp)
c.Write(
args(pipe.Transact(pipe.Key().PrivateKey, object["to"], object["value"], object["gas"], object["gasPrice"], object["data"])),
msg.Id,
)
}
case "eth_gasPrice":
c.Write("10000000000000", msg.Id)
case "eth_coinbase":
c.Write(pipe.CoinBase(), msg.Id)
case "eth_listening":
c.Write(pipe.IsListening(), msg.Id)
case "eth_mining":
c.Write(pipe.IsMining(), msg.Id)
case "eth_peerCount":
c.Write(pipe.PeerCount(), msg.Id)
case "eth_countAt":
args := msg.Arguments()
c.Write(pipe.TxCountAt(args.Get(0).Str()), msg.Id)
case "eth_codeAt":
args := msg.Arguments()
c.Write(len(pipe.CodeAt(args.Get(0).Str())), msg.Id)
case "eth_storageAt":
args := msg.Arguments()
c.Write(pipe.StorageAt(args.Get(0).Str(), args.Get(1).Str()), msg.Id)
case "eth_balanceAt":
args := msg.Arguments()
c.Write(pipe.BalanceAt(args.Get(0).Str()), msg.Id)
case "eth_secretToAddress":
args := msg.Arguments()
c.Write(pipe.SecretToAddress(args.Get(0).Str()), msg.Id)
case "eth_newFilter":
case "eth_newFilterString":
case "eth_messages":
// TODO
}
})
wsServ.Listen()
}
func StartWebSockets(eth *eth.Ethereum) {
wslogger.Infoln("Starting WebSockets")
sock := NewWebSocketServer(eth)
go sock.Serv()
}
// TODO This is starting to become a generic method. Move to utils
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 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
}
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