plugeth/rpc/api.go

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package rpc
import (
"bytes"
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"encoding/json"
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"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
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"github.com/ethereum/go-ethereum/xeth"
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)
type EthereumApi struct {
eth *xeth.XEth
}
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func NewEthereumApi(xeth *xeth.XEth) *EthereumApi {
api := &EthereumApi{
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eth: xeth,
}
return api
}
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func (api *EthereumApi) xeth() *xeth.XEth {
return api.eth
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}
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func (api *EthereumApi) xethAtStateNum(num int64) *xeth.XEth {
return api.xeth().AtStateNum(num)
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}
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func (api *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) error {
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// Spec at https://github.com/ethereum/wiki/wiki/JSON-RPC
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glog.V(logger.Debug).Infof("%s %s", req.Method, req.Params)
switch req.Method {
case "web3_sha3":
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args := new(Sha3Args)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
*reply = common.ToHex(crypto.Sha3(common.FromHex(args.Data)))
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case "web3_clientVersion":
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*reply = api.xeth().ClientVersion()
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case "net_version":
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*reply = api.xeth().NetworkVersion()
case "net_listening":
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*reply = api.xeth().IsListening()
case "net_peerCount":
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*reply = newHexNum(api.xeth().PeerCount())
case "eth_protocolVersion":
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*reply = api.xeth().EthVersion()
case "eth_coinbase":
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*reply = newHexData(api.xeth().Coinbase())
case "eth_mining":
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*reply = api.xeth().IsMining()
case "eth_gasPrice":
v := xeth.DefaultGasPrice()
*reply = newHexNum(v.Bytes())
case "eth_accounts":
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*reply = api.xeth().Accounts()
case "eth_blockNumber":
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v := api.xeth().CurrentBlock().Number()
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*reply = newHexNum(v.Bytes())
case "eth_getBalance":
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args := new(GetBalanceArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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*reply = api.xethAtStateNum(args.BlockNumber).BalanceAt(args.Address)
//v := api.xethAtStateNum(args.BlockNumber).State().SafeGet(args.Address).Balance()
//*reply = common.ToHex(v.Bytes())
case "eth_getStorage", "eth_storageAt":
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args := new(GetStorageArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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*reply = api.xethAtStateNum(args.BlockNumber).State().SafeGet(args.Address).Storage()
case "eth_getStorageAt":
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args := new(GetStorageAtArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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*reply = api.xethAtStateNum(args.BlockNumber).StorageAt(args.Address, args.Key)
case "eth_getTransactionCount":
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args := new(GetTxCountArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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count := api.xethAtStateNum(args.BlockNumber).TxCountAt(args.Address)
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*reply = newHexNum(big.NewInt(int64(count)).Bytes())
case "eth_getBlockTransactionCountByHash":
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args := new(HashArgs)
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if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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block := NewBlockRes(api.xeth().EthBlockByHash(args.Hash), false)
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if block == nil {
*reply = nil
} else {
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*reply = newHexNum(big.NewInt(int64(len(block.Transactions))).Bytes())
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}
case "eth_getBlockTransactionCountByNumber":
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args := new(BlockNumArg)
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if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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block := NewBlockRes(api.xeth().EthBlockByNumber(args.BlockNumber), false)
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if block == nil {
*reply = nil
break
}
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*reply = newHexNum(big.NewInt(int64(len(block.Transactions))).Bytes())
case "eth_getUncleCountByBlockHash":
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args := new(HashArgs)
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if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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block := api.xeth().EthBlockByHash(args.Hash)
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br := NewBlockRes(block, false)
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if br == nil {
*reply = nil
break
}
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*reply = newHexNum(big.NewInt(int64(len(br.Uncles))).Bytes())
case "eth_getUncleCountByBlockNumber":
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args := new(BlockNumArg)
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if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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block := api.xeth().EthBlockByNumber(args.BlockNumber)
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br := NewBlockRes(block, false)
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if br == nil {
*reply = nil
break
}
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*reply = newHexNum(big.NewInt(int64(len(br.Uncles))).Bytes())
case "eth_getData", "eth_getCode":
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args := new(GetDataArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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v := api.xethAtStateNum(args.BlockNumber).CodeAtBytes(args.Address)
*reply = newHexData(v)
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case "eth_sign":
args := new(NewSigArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
v, err := api.xeth().Sign(args.From, args.Data, false)
if err != nil {
return err
}
*reply = v
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case "eth_sendTransaction", "eth_transact":
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args := new(NewTxArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
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return err
}
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// nonce may be nil ("guess" mode)
var nonce string
if args.Nonce != nil {
nonce = args.Nonce.String()
}
var gas string
if args.Gas == nil {
gas = ""
} else {
gas = args.Gas.String()
}
var gasprice string
if args.GasPrice == nil {
gas = ""
} else {
gas = args.GasPrice.String()
}
v, err := api.xeth().Transact(args.From, args.To, nonce, args.Value.String(), gas, gasprice, args.Data)
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if err != nil {
return err
}
*reply = v
case "eth_estimateGas":
_, gas, err := api.doCall(req.Params)
if err != nil {
return err
}
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// TODO unwrap the parent method's ToHex call
if len(gas) == 0 {
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*reply = newHexNum(0)
} else {
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*reply = newHexNum(gas)
}
case "eth_call":
v, _, err := api.doCall(req.Params)
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if err != nil {
return err
}
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// TODO unwrap the parent method's ToHex call
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if v == "0x0" {
*reply = newHexData([]byte{})
} else {
*reply = newHexData(common.FromHex(v))
}
case "eth_flush":
return NewNotImplementedError(req.Method)
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case "eth_getBlockByHash":
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args := new(GetBlockByHashArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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block := api.xeth().EthBlockByHash(args.BlockHash)
br := NewBlockRes(block, args.IncludeTxs)
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*reply = br
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case "eth_getBlockByNumber":
args := new(GetBlockByNumberArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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block := api.xeth().EthBlockByNumber(args.BlockNumber)
br := NewBlockRes(block, args.IncludeTxs)
// If request was for "pending", nil nonsensical fields
if args.BlockNumber == -2 {
br.BlockHash = nil
br.BlockNumber = nil
br.Miner = nil
br.Nonce = nil
br.LogsBloom = nil
}
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*reply = br
case "eth_getTransactionByHash":
args := new(HashArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
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return err
}
tx, bhash, bnum, txi := api.xeth().EthTransactionByHash(args.Hash)
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if tx != nil {
v := NewTransactionRes(tx)
// if the blockhash is 0, assume this is a pending transaction
if bytes.Compare(bhash.Bytes(), bytes.Repeat([]byte{0}, 32)) != 0 {
v.BlockHash = newHexData(bhash)
v.BlockNumber = newHexNum(bnum)
v.TxIndex = newHexNum(txi)
}
*reply = v
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}
case "eth_getTransactionByBlockHashAndIndex":
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args := new(HashIndexArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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block := api.xeth().EthBlockByHash(args.Hash)
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br := NewBlockRes(block, true)
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if br == nil {
*reply = nil
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break
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}
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if args.Index >= int64(len(br.Transactions)) || args.Index < 0 {
// return NewValidationError("Index", "does not exist")
*reply = nil
} else {
*reply = br.Transactions[args.Index]
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}
case "eth_getTransactionByBlockNumberAndIndex":
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args := new(BlockNumIndexArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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block := api.xeth().EthBlockByNumber(args.BlockNumber)
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v := NewBlockRes(block, true)
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if v == nil {
*reply = nil
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break
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}
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if args.Index >= int64(len(v.Transactions)) || args.Index < 0 {
// return NewValidationError("Index", "does not exist")
*reply = nil
} else {
*reply = v.Transactions[args.Index]
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}
case "eth_getUncleByBlockHashAndIndex":
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args := new(HashIndexArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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br := NewBlockRes(api.xeth().EthBlockByHash(args.Hash), false)
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if br == nil {
*reply = nil
return nil
}
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if args.Index >= int64(len(br.Uncles)) || args.Index < 0 {
// return NewValidationError("Index", "does not exist")
*reply = nil
} else {
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*reply = br.Uncles[args.Index]
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}
case "eth_getUncleByBlockNumberAndIndex":
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args := new(BlockNumIndexArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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block := api.xeth().EthBlockByNumber(args.BlockNumber)
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v := NewBlockRes(block, true)
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if v == nil {
*reply = nil
return nil
}
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if args.Index >= int64(len(v.Uncles)) || args.Index < 0 {
// return NewValidationError("Index", "does not exist")
*reply = nil
} else {
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*reply = v.Uncles[args.Index]
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}
case "eth_getCompilers":
var lang string
if solc, _ := api.xeth().Solc(); solc != nil {
lang = "Solidity"
}
c := []string{lang}
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*reply = c
case "eth_compileLLL", "eth_compileSerpent":
return NewNotImplementedError(req.Method)
case "eth_compileSolidity":
solc, _ := api.xeth().Solc()
if solc == nil {
return NewNotAvailableError(req.Method, "solc (solidity compiler) not found")
}
args := new(SourceArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
contracts, err := solc.Compile(args.Source)
if err != nil {
return err
}
*reply = contracts
case "eth_newFilter":
args := new(BlockFilterArgs)
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if err := json.Unmarshal(req.Params, &args); err != nil {
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return err
}
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id := api.xeth().NewLogFilter(args.Earliest, args.Latest, args.Skip, args.Max, args.Address, args.Topics)
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*reply = newHexNum(big.NewInt(int64(id)).Bytes())
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case "eth_newBlockFilter":
*reply = newHexNum(api.xeth().NewBlockFilter())
case "eth_newPendingTransactionFilter":
*reply = newHexNum(api.xeth().NewTransactionFilter())
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case "eth_uninstallFilter":
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args := new(FilterIdArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
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return err
}
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*reply = api.xeth().UninstallFilter(args.Id)
case "eth_getFilterChanges":
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args := new(FilterIdArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
switch api.xeth().GetFilterType(args.Id) {
case xeth.BlockFilterTy:
*reply = NewHashesRes(api.xeth().BlockFilterChanged(args.Id))
case xeth.TransactionFilterTy:
*reply = NewHashesRes(api.xeth().TransactionFilterChanged(args.Id))
case xeth.LogFilterTy:
*reply = NewLogsRes(api.xeth().LogFilterChanged(args.Id))
default:
*reply = []string{} // reply empty string slice
}
case "eth_getFilterLogs":
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args := new(FilterIdArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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*reply = NewLogsRes(api.xeth().Logs(args.Id))
case "eth_getLogs":
args := new(BlockFilterArgs)
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if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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*reply = NewLogsRes(api.xeth().AllLogs(args.Earliest, args.Latest, args.Skip, args.Max, args.Address, args.Topics))
case "eth_getWork":
api.xeth().SetMining(true, 0)
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*reply = api.xeth().RemoteMining().GetWork()
case "eth_submitWork":
args := new(SubmitWorkArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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*reply = api.xeth().RemoteMining().SubmitWork(args.Nonce, common.HexToHash(args.Digest), common.HexToHash(args.Header))
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case "db_putString":
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args := new(DbArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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if err := args.requirements(); err != nil {
return err
}
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api.xeth().DbPut([]byte(args.Database+args.Key), args.Value)
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*reply = true
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case "db_getString":
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args := new(DbArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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if err := args.requirements(); err != nil {
return err
}
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res, _ := api.xeth().DbGet([]byte(args.Database + args.Key))
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*reply = string(res)
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case "db_putHex":
args := new(DbHexArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
if err := args.requirements(); err != nil {
return err
}
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api.xeth().DbPut([]byte(args.Database+args.Key), args.Value)
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*reply = true
case "db_getHex":
args := new(DbHexArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
if err := args.requirements(); err != nil {
return err
}
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res, _ := api.xeth().DbGet([]byte(args.Database + args.Key))
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*reply = newHexData(res)
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case "shh_version":
// Short circuit if whisper is not running
if api.xeth().Whisper() == nil {
return NewNotAvailableError(req.Method, "whisper offline")
}
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// Retrieves the currently running whisper protocol version
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*reply = api.xeth().WhisperVersion()
case "shh_post":
// Short circuit if whisper is not running
if api.xeth().Whisper() == nil {
return NewNotAvailableError(req.Method, "whisper offline")
}
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// Injects a new message into the whisper network
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args := new(WhisperMessageArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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err := api.xeth().Whisper().Post(args.Payload, args.To, args.From, args.Topics, args.Priority, args.Ttl)
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if err != nil {
return err
}
*reply = true
case "shh_newIdentity":
// Short circuit if whisper is not running
if api.xeth().Whisper() == nil {
return NewNotAvailableError(req.Method, "whisper offline")
}
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// Creates a new whisper identity to use for sending/receiving messages
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*reply = api.xeth().Whisper().NewIdentity()
case "shh_hasIdentity":
// Short circuit if whisper is not running
if api.xeth().Whisper() == nil {
return NewNotAvailableError(req.Method, "whisper offline")
}
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// Checks if an identity if owned or not
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args := new(WhisperIdentityArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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*reply = api.xeth().Whisper().HasIdentity(args.Identity)
case "shh_newFilter":
// Short circuit if whisper is not running
if api.xeth().Whisper() == nil {
return NewNotAvailableError(req.Method, "whisper offline")
}
// Create a new filter to watch and match messages with
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args := new(WhisperFilterArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
id := api.xeth().NewWhisperFilter(args.To, args.From, args.Topics)
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*reply = newHexNum(big.NewInt(int64(id)).Bytes())
case "shh_uninstallFilter":
// Short circuit if whisper is not running
if api.xeth().Whisper() == nil {
return NewNotAvailableError(req.Method, "whisper offline")
}
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// Remove an existing filter watching messages
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args := new(FilterIdArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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*reply = api.xeth().UninstallWhisperFilter(args.Id)
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case "shh_getFilterChanges":
// Short circuit if whisper is not running
if api.xeth().Whisper() == nil {
return NewNotAvailableError(req.Method, "whisper offline")
}
// Retrieve all the new messages arrived since the last request
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args := new(FilterIdArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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*reply = api.xeth().WhisperMessagesChanged(args.Id)
case "shh_getMessages":
// Short circuit if whisper is not running
if api.xeth().Whisper() == nil {
return NewNotAvailableError(req.Method, "whisper offline")
}
// Retrieve all the cached messages matching a specific, existing filter
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args := new(FilterIdArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
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*reply = api.xeth().WhisperMessages(args.Id)
case "eth_hashrate":
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*reply = newHexNum(api.xeth().HashRate())
case "ext_disasm":
args := new(SourceArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
*reply = vm.Disasm(common.FromHex(args.Source))
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// case "eth_register":
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// // Placeholder for actual type
// args := new(HashIndexArgs)
// if err := json.Unmarshal(req.Params, &args); err != nil {
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// return err
// }
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// *reply = api.xeth().Register(args.Hash)
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// case "eth_unregister":
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// args := new(HashIndexArgs)
// if err := json.Unmarshal(req.Params, &args); err != nil {
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// return err
// }
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// *reply = api.xeth().Unregister(args.Hash)
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// case "eth_watchTx":
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// args := new(HashIndexArgs)
// if err := json.Unmarshal(req.Params, &args); err != nil {
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// return err
// }
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// *reply = api.xeth().PullWatchTx(args.Hash)
default:
return NewNotImplementedError(req.Method)
}
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// glog.V(logger.Detail).Infof("Reply: %v\n", reply)
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return nil
}
func (api *EthereumApi) doCall(params json.RawMessage) (string, string, error) {
args := new(CallArgs)
if err := json.Unmarshal(params, &args); err != nil {
return "", "", err
}
var gas string
if args.Gas == nil {
gas = ""
} else {
gas = args.Gas.String()
}
var gasprice string
if args.GasPrice == nil {
gas = ""
} else {
gas = args.GasPrice.String()
}
return api.xethAtStateNum(args.BlockNumber).Call(args.From, args.To, args.Value.String(), gas, gasprice, args.Data)
}