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/*
This file is part of go-ethereum
go-ethereum 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 3 of the License, or
(at your option) any later version.
go-ethereum 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 go-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
package websocket
import (
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/ethutil"
"github.com/ethereum/go-ethereum/event/filter"
"github.com/ethereum/go-ethereum/state"
"github.com/ethereum/go-ethereum/ui"
"github.com/ethereum/go-ethereum/xeth"
)
func args(v ...interface{}) []interface{} {
return v
}
type WebSocketServer struct {
eth *eth.Ethereum
filterManager *filter.FilterManager
}
func NewWebSocketServer(eth *eth.Ethereum) *WebSocketServer {
filterManager := filter.NewFilterManager(eth.EventMux())
go filterManager.Start()
return &WebSocketServer{eth, filterManager}
}
func (self *WebSocketServer) Serv() {
pipe := xeth.NewJSXEth(self.eth)
wsServ := NewServer("/eth", ":40404")
wsServ.MessageFunc(func(c *Client, msg *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_accounts":
c.Write(pipe.Accounts(), msg.Id)
case "eth_newFilter":
if mp, ok := msg.Args[0].(map[string]interface{}); ok {
var id int
filter := ui.NewFilterFromMap(mp, self.eth)
filter.MessageCallback = func(messages state.Messages) {
c.Event(toMessages(messages), "eth_changed", id)
}
id = self.filterManager.InstallFilter(filter)
c.Write(id, msg.Id)
}
case "eth_newFilterString":
var id int
filter := core.NewFilter(self.eth)
filter.BlockCallback = func(block *types.Block) {
c.Event(nil, "eth_changed", id)
}
id = self.filterManager.InstallFilter(filter)
c.Write(id, msg.Id)
case "eth_filterLogs":
filter := self.filterManager.GetFilter(int(msg.Arguments().Get(0).Uint()))
if filter != nil {
c.Write(toMessages(filter.Find()), msg.Id)
}
}
})
wsServ.Listen()
}
func toMessages(messages state.Messages) (msgs []xeth.JSMessage) {
msgs = make([]xeth.JSMessage, len(messages))
for i, msg := range messages {
msgs[i] = xeth.NewJSMessage(msg)
}
return
}
// 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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