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restructured eth rpc API

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pull/1239/head
Bas van Kervel 10 years ago committed by Bas van Kervel
parent 6609d45ef4
commit 2f55a1d798
11 changed files with 2167 additions and 0 deletions
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  1. 12
      rpc/api/api.go
  2. 42
      rpc/api/api_test.go
  3. 523
      rpc/api/eth.go
  4. 835
      rpc/api/eth_args.go
  5. 3
      rpc/api/eth_js.go
  6. 460
      rpc/api/parsing.go
  7. 36
      rpc/api/utils.go
  8. 47
      rpc/codec/codec.go
  9. 75
      rpc/codec/json.go
  10. 96
      rpc/shared/errors.go
  11. 38
      rpc/shared/types.go

12
rpc/api/api.go
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package api
import "github.com/ethereum/go-ethereum/rpc/shared"
// Ethereum RPC API interface
type EthereumApi interface {
// Execute the given request and returns the response or an error
Execute(*shared.Request) (interface{}, error)
// List of supported RCP methods this API provides
Methods() []string
}

42
rpc/api/api_test.go
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package api
import (
"testing"
"github.com/ethereum/go-ethereum/rpc/codec"
)
func TestParseApiString(t *testing.T) {
apis, err := ParseApiString("", codec.JSON, nil, nil)
if err == nil {
t.Errorf("Expected an err from parsing empty API string but got nil")
}
if len(apis) != 0 {
t.Errorf("Expected 0 apis from empty API string")
}
apis, err = ParseApiString("eth", codec.JSON, nil, nil)
if err != nil {
t.Errorf("Expected nil err from parsing empty API string but got %v", err)
}
if len(apis) != 1 {
t.Errorf("Expected 1 apis but got %d - %v", apis, apis)
}
apis, err = ParseApiString("eth,eth", codec.JSON, nil, nil)
if err != nil {
t.Errorf("Expected nil err from parsing empty API string but got \"%v\"", err)
}
if len(apis) != 2 {
t.Errorf("Expected 2 apis but got %d - %v", apis, apis)
}
apis, err = ParseApiString("eth,invalid", codec.JSON, nil, nil)
if err == nil {
t.Errorf("Expected an err but got no err")
}
}

523
rpc/api/eth.go
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package api
import (
"bytes"
"encoding/json"
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/rpc/codec"
"github.com/ethereum/go-ethereum/rpc/shared"
"github.com/ethereum/go-ethereum/xeth"
)
// eth api provider
// See https://github.com/ethereum/wiki/wiki/JSON-RPC
type EthApi struct {
xeth *xeth.XEth
methods map[string]ethhandler
codec codec.ApiCoder
}
// eth callback handler
type ethhandler func(*EthApi, *shared.Request) (interface{}, error)
var (
ethMapping = map[string]ethhandler{
"eth_accounts": (*EthApi).Accounts,
"eth_blockNumber": (*EthApi).BlockNumber,
"eth_getBalance": (*EthApi).GetBalance,
"eth_protocolVersion": (*EthApi).ProtocolVersion,
"eth_coinbase": (*EthApi).Coinbase,
"eth_mining": (*EthApi).IsMining,
"eth_gasPrice": (*EthApi).GasPrice,
"eth_getStorage": (*EthApi).GetStorage,
"eth_storageAt": (*EthApi).GetStorage,
"eth_getStorageAt": (*EthApi).GetStorageAt,
"eth_getTransactionCount": (*EthApi).GetTransactionCount,
"eth_getBlockTransactionCountByHash": (*EthApi).GetBlockTransactionCountByHash,
"eth_getBlockTransactionCountByNumber": (*EthApi).GetBlockTransactionCountByNumber,
"eth_getUncleCountByBlockHash": (*EthApi).GetUncleCountByBlockHash,
"eth_getUncleCountByBlockNumber": (*EthApi).GetUncleCountByBlockNumber,
"eth_getData": (*EthApi).GetData,
"eth_getCode": (*EthApi).GetData,
"eth_sign": (*EthApi).Sign,
"eth_sendTransaction": (*EthApi).SendTransaction,
"eth_transact": (*EthApi).SendTransaction,
"eth_estimateGas": (*EthApi).EstimateGas,
"eth_call": (*EthApi).Call,
"eth_flush": (*EthApi).Flush,
"eth_getBlockByHash": (*EthApi).GetBlockByHash,
"eth_getBlockByNumber": (*EthApi).GetBlockByNumber,
"eth_getTransactionByHash": (*EthApi).GetTransactionByHash,
"eth_getTransactionByBlockHashAndIndex": (*EthApi).GetTransactionByBlockHashAndIndex,
"eth_getUncleByBlockHashAndIndex": (*EthApi).GetUncleByBlockHashAndIndex,
"eth_getUncleByBlockNumberAndIndex": (*EthApi).GetUncleByBlockNumberAndIndex,
"eth_getCompilers": (*EthApi).GetCompilers,
"eth_compileSolidity": (*EthApi).CompileSolidity,
"eth_newFilter": (*EthApi).NewFilter,
"eth_newBlockFilter": (*EthApi).NewBlockFilter,
"eth_newPendingTransactionFilter": (*EthApi).NewPendingTransactionFilter,
"eth_uninstallFilter": (*EthApi).UninstallFilter,
"eth_getFilterChanges": (*EthApi).GetFilterChanges,
"eth_getFilterLogs": (*EthApi).GetFilterLogs,
"eth_getLogs": (*EthApi).GetLogs,
"eth_hashrate": (*EthApi).Hashrate,
"eth_getWork": (*EthApi).GetWork,
"eth_submitWork": (*EthApi).SubmitWork,
}
)
// create new EthApi instance
func NewEthApi(xeth *xeth.XEth, codec codec.Codec) *EthApi {
return &EthApi{xeth, ethMapping, codec.New(nil)}
}
// collection with supported methods
func (self *EthApi) Methods() []string {
methods := make([]string, len(self.methods))
i := 0
for k := range self.methods {
methods[i] = k
i++
}
return methods
}
// Execute given request
func (self *EthApi) Execute(req *shared.Request) (interface{}, error) {
if callback, ok := self.methods[req.Method]; ok {
return callback(self, req)
}
return nil, shared.NewNotImplementedError(req.Method)
}
func (self *EthApi) Accounts(req *shared.Request) (interface{}, error) {
return self.xeth.Accounts(), nil
}
func (self *EthApi) Hashrate(req *shared.Request) (interface{}, error) {
return newHexNum(self.xeth.HashRate()), nil
}
func (self *EthApi) BlockNumber(req *shared.Request) (interface{}, error) {
return self.xeth.CurrentBlock().Number(), nil
}
func (self *EthApi) GetBalance(req *shared.Request) (interface{}, error) {
args := new(GetBalanceArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
return self.xeth.AtStateNum(args.BlockNumber).BalanceAt(args.Address), nil
}
func (self *EthApi) ProtocolVersion(req *shared.Request) (interface{}, error) {
return self.xeth.EthVersion(), nil
}
func (self *EthApi) Coinbase(req *shared.Request) (interface{}, error) {
return newHexData(self.xeth.Coinbase()), nil
}
func (self *EthApi) IsMining(req *shared.Request) (interface{}, error) {
return self.xeth.IsMining(), nil
}
func (self *EthApi) GasPrice(req *shared.Request) (interface{}, error) {
return newHexNum(xeth.DefaultGasPrice().Bytes()), nil
}
func (self *EthApi) GetStorage(req *shared.Request) (interface{}, error) {
args := new(GetStorageArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
return self.xeth.AtStateNum(args.BlockNumber).State().SafeGet(args.Address).Storage(), nil
}
func (self *EthApi) GetStorageAt(req *shared.Request) (interface{}, error) {
args := new(GetStorageAtArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
return self.xeth.AtStateNum(args.BlockNumber).StorageAt(args.Address, args.Key), nil
}
func (self *EthApi) GetTransactionCount(req *shared.Request) (interface{}, error) {
args := new(GetTxCountArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
count := self.xeth.AtStateNum(args.BlockNumber).TxCountAt(args.Address)
return newHexNum(big.NewInt(int64(count)).Bytes()), nil
}
func (self *EthApi) GetBlockTransactionCountByHash(req *shared.Request) (interface{}, error) {
args := new(HashArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
block := NewBlockRes(self.xeth.EthBlockByHash(args.Hash), false)
if block == nil {
return nil, nil
} else {
return newHexNum(big.NewInt(int64(len(block.Transactions))).Bytes()), nil
}
}
func (self *EthApi) GetBlockTransactionCountByNumber(req *shared.Request) (interface{}, error) {
args := new(BlockNumArg)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
block := NewBlockRes(self.xeth.EthBlockByNumber(args.BlockNumber), false)
if block == nil {
return nil, nil
} else {
return newHexNum(big.NewInt(int64(len(block.Transactions))).Bytes()), nil
}
}
func (self *EthApi) GetUncleCountByBlockHash(req *shared.Request) (interface{}, error) {
args := new(HashArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
block := self.xeth.EthBlockByHash(args.Hash)
br := NewBlockRes(block, false)
if br == nil {
return nil, nil
}
return newHexNum(big.NewInt(int64(len(br.Uncles))).Bytes()), nil
}
func (self *EthApi) GetUncleCountByBlockNumber(req *shared.Request) (interface{}, error) {
args := new(BlockNumArg)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
block := self.xeth.EthBlockByNumber(args.BlockNumber)
br := NewBlockRes(block, false)
if br == nil {
return nil, nil
}
return newHexNum(big.NewInt(int64(len(br.Uncles))).Bytes()), nil
}
func (self *EthApi) GetData(req *shared.Request) (interface{}, error) {
args := new(GetDataArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
v := self.xeth.AtStateNum(args.BlockNumber).CodeAtBytes(args.Address)
return newHexData(v), nil
}
func (self *EthApi) Sign(req *shared.Request) (interface{}, error) {
args := new(NewSignArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
v, err := self.xeth.Sign(args.From, args.Data, false)
if err != nil {
return nil, err
}
return v, nil
}
func (self *EthApi) SendTransaction(req *shared.Request) (interface{}, error) {
args := new(NewTxArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
// nonce may be nil ("guess" mode)
var nonce string
if args.Nonce != nil {
nonce = args.Nonce.String()
}
v, err := self.xeth.Transact(args.From, args.To, nonce, args.Value.String(), args.Gas.String(), args.GasPrice.String(), args.Data)
if err != nil {
return nil, err
}
return v, nil
}
func (self *EthApi) EstimateGas(req *shared.Request) (interface{}, error) {
_, gas, err := self.doCall(req.Params)
if err != nil {
return nil, err
}
// TODO unwrap the parent method's ToHex call
if len(gas) == 0 {
return newHexNum(0), nil
} else {
return newHexNum(gas), nil
}
}
func (self *EthApi) Call(req *shared.Request) (interface{}, error) {
v, _, err := self.doCall(req.Params)
if err != nil {
return nil, err
}
// TODO unwrap the parent method's ToHex call
if v == "0x0" {
return newHexData([]byte{}), nil
} else {
return newHexData(common.FromHex(v)), nil
}
}
func (self *EthApi) Flush(req *shared.Request) (interface{}, error) {
return nil, shared.NewNotImplementedError(req.Method)
}
func (self *EthApi) doCall(params json.RawMessage) (string, string, error) {
args := new(CallArgs)
if err := self.codec.Decode(params, &args); err != nil {
return "", "", err
}
return self.xeth.AtStateNum(args.BlockNumber).Call(args.From, args.To, args.Value.String(), args.Gas.String(), args.GasPrice.String(), args.Data)
}
func (self *EthApi) GetBlockByHash(req *shared.Request) (interface{}, error) {
args := new(GetBlockByHashArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
block := self.xeth.EthBlockByHash(args.BlockHash)
return NewBlockRes(block, args.IncludeTxs), nil
}
func (self *EthApi) GetBlockByNumber(req *shared.Request) (interface{}, error) {
args := new(GetBlockByNumberArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
block := self.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
}
return br, nil
}
func (self *EthApi) GetTransactionByHash(req *shared.Request) (interface{}, error) {
args := new(HashArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
tx, bhash, bnum, txi := self.xeth.EthTransactionByHash(args.Hash)
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)
}
return v, nil
}
return nil, nil
}
func (self *EthApi) GetTransactionByBlockHashAndIndex(req *shared.Request) (interface{}, error) {
args := new(HashIndexArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
block := self.xeth.EthBlockByHash(args.Hash)
br := NewBlockRes(block, true)
if br == nil {
return nil, nil
}
if args.Index >= int64(len(br.Transactions)) || args.Index < 0 {
return nil, nil
} else {
return br.Transactions[args.Index], nil
}
}
func (self *EthApi) GetTransactionByBlockNumberAndIndex(req *shared.Request) (interface{}, error) {
args := new(BlockNumIndexArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
block := self.xeth.EthBlockByNumber(args.BlockNumber)
v := NewBlockRes(block, true)
if v == nil {
return nil, nil
}
if args.Index >= int64(len(v.Transactions)) || args.Index < 0 {
// return NewValidationError("Index", "does not exist")
return nil, nil
}
return v.Transactions[args.Index], nil
}
func (self *EthApi) GetUncleByBlockHashAndIndex(req *shared.Request) (interface{}, error) {
args := new(HashIndexArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
br := NewBlockRes(self.xeth.EthBlockByHash(args.Hash), false)
if br == nil {
return nil, nil
}
if args.Index >= int64(len(br.Uncles)) || args.Index < 0 {
// return NewValidationError("Index", "does not exist")
return nil, nil
}
return br.Uncles[args.Index], nil
}
func (self *EthApi) GetUncleByBlockNumberAndIndex(req *shared.Request) (interface{}, error) {
args := new(BlockNumIndexArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
block := self.xeth.EthBlockByNumber(args.BlockNumber)
v := NewBlockRes(block, true)
if v == nil {
return nil, nil
}
if args.Index >= int64(len(v.Uncles)) || args.Index < 0 {
return nil, nil
} else {
return v.Uncles[args.Index], nil
}
}
func (self *EthApi) GetCompilers(req *shared.Request) (interface{}, error) {
var lang string
if solc, _ := self.xeth.Solc(); solc != nil {
lang = "Solidity"
}
c := []string{lang}
return c, nil
}
func (self *EthApi) CompileSolidity(req *shared.Request) (interface{}, error) {
solc, _ := self.xeth.Solc()
if solc == nil {
return nil, shared.NewNotAvailableError(req.Method, "solc (solidity compiler) not found")
}
args := new(SourceArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
contracts, err := solc.Compile(args.Source)
if err != nil {
return nil, err
}
return contracts, nil
}
func (self *EthApi) NewFilter(req *shared.Request) (interface{}, error) {
args := new(BlockFilterArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
id := self.xeth.NewLogFilter(args.Earliest, args.Latest, args.Skip, args.Max, args.Address, args.Topics)
return newHexNum(big.NewInt(int64(id)).Bytes()), nil
}
func (self *EthApi) NewBlockFilter(req *shared.Request) (interface{}, error) {
return newHexNum(self.xeth.NewBlockFilter()), nil
}
func (self *EthApi) NewPendingTransactionFilter(req *shared.Request) (interface{}, error) {
return newHexNum(self.xeth.NewTransactionFilter()), nil
}
func (self *EthApi) UninstallFilter(req *shared.Request) (interface{}, error) {
args := new(FilterIdArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
return self.xeth.UninstallFilter(args.Id), nil
}
func (self *EthApi) GetFilterChanges(req *shared.Request) (interface{}, error) {
args := new(FilterIdArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
switch self.xeth.GetFilterType(args.Id) {
case xeth.BlockFilterTy:
return NewHashesRes(self.xeth.BlockFilterChanged(args.Id)), nil
case xeth.TransactionFilterTy:
return NewHashesRes(self.xeth.TransactionFilterChanged(args.Id)), nil
case xeth.LogFilterTy:
return NewLogsRes(self.xeth.LogFilterChanged(args.Id)), nil
default:
return []string{}, nil // reply empty string slice
}
}
func (self *EthApi) GetFilterLogs(req *shared.Request) (interface{}, error) {
args := new(FilterIdArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
return NewLogsRes(self.xeth.Logs(args.Id)), nil
}
func (self *EthApi) GetLogs(req *shared.Request) (interface{}, error) {
args := new(BlockFilterArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
return NewLogsRes(self.xeth.AllLogs(args.Earliest, args.Latest, args.Skip, args.Max, args.Address, args.Topics)), nil
}
func (self *EthApi) GetWork(req *shared.Request) (interface{}, error) {
self.xeth.SetMining(true, 0)
return self.xeth.RemoteMining().GetWork(), nil
}
func (self *EthApi) SubmitWork(req *shared.Request) (interface{}, error) {
args := new(SubmitWorkArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
return self.xeth.RemoteMining().SubmitWork(args.Nonce, common.HexToHash(args.Digest), common.HexToHash(args.Header)), nil
}

835
rpc/api/eth_args.go
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package api
import (
"encoding/json"
"fmt"
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/rpc/shared"
)
const (
defaultLogLimit = 100
defaultLogOffset = 0
)
type GetBalanceArgs struct {
Address string
BlockNumber int64
}
func (args *GetBalanceArgs) UnmarshalJSON(b []byte) (err error) {
var obj []interface{}
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 1 {
return shared.NewInsufficientParamsError(len(obj), 1)
}
addstr, ok := obj[0].(string)
if !ok {
return shared.NewInvalidTypeError("address", "not a string")
}
args.Address = addstr
if len(obj) > 1 {
if err := blockHeight(obj[1], &args.BlockNumber); err != nil {
return err
}
} else {
args.BlockNumber = -1
}
return nil
}
type GetStorageArgs struct {
Address string
BlockNumber int64
}
func (args *GetStorageArgs) UnmarshalJSON(b []byte) (err error) {
var obj []interface{}
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 1 {
return shared.NewInsufficientParamsError(len(obj), 1)
}
addstr, ok := obj[0].(string)
if !ok {
return shared.NewInvalidTypeError("address", "not a string")
}
args.Address = addstr
if len(obj) > 1 {
if err := blockHeight(obj[1], &args.BlockNumber); err != nil {
return err
}
} else {
args.BlockNumber = -1
}
return nil
}
type GetStorageAtArgs struct {
Address string
BlockNumber int64
Key string
}
func (args *GetStorageAtArgs) UnmarshalJSON(b []byte) (err error) {
var obj []interface{}
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 2 {
return shared.NewInsufficientParamsError(len(obj), 2)
}
addstr, ok := obj[0].(string)
if !ok {
return shared.NewInvalidTypeError("address", "not a string")
}
args.Address = addstr
keystr, ok := obj[1].(string)
if !ok {
return shared.NewInvalidTypeError("key", "not a string")
}
args.Key = keystr
if len(obj) > 2 {
if err := blockHeight(obj[2], &args.BlockNumber); err != nil {
return err
}
} else {
args.BlockNumber = -1
}
return nil
}
type GetTxCountArgs struct {
Address string
BlockNumber int64
}
func (args *GetTxCountArgs) UnmarshalJSON(b []byte) (err error) {
var obj []interface{}
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 1 {
return shared.NewInsufficientParamsError(len(obj), 1)
}
addstr, ok := obj[0].(string)
if !ok {
return shared.NewInvalidTypeError("address", "not a string")
}
args.Address = addstr
if len(obj) > 1 {
if err := blockHeight(obj[1], &args.BlockNumber); err != nil {
return err
}
} else {
args.BlockNumber = -1
}
return nil
}
type HashArgs struct {
Hash string
}
func (args *HashArgs) UnmarshalJSON(b []byte) (err error) {
var obj []interface{}
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 1 {
return shared.NewInsufficientParamsError(len(obj), 1)
}
arg0, ok := obj[0].(string)
if !ok {
return shared.NewInvalidTypeError("hash", "not a string")
}
args.Hash = arg0
return nil
}
type BlockNumArg struct {
BlockNumber int64
}
func (args *BlockNumArg) UnmarshalJSON(b []byte) (err error) {
var obj []interface{}
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 1 {
return shared.NewInsufficientParamsError(len(obj), 1)
}
if err := blockHeight(obj[0], &args.BlockNumber); err != nil {
return err
}
return nil
}
type GetDataArgs struct {
Address string
BlockNumber int64
}
func (args *GetDataArgs) UnmarshalJSON(b []byte) (err error) {
var obj []interface{}
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 1 {
return shared.NewInsufficientParamsError(len(obj), 1)
}
addstr, ok := obj[0].(string)
if !ok {
return shared.NewInvalidTypeError("address", "not a string")
}
args.Address = addstr
if len(obj) > 1 {
if err := blockHeight(obj[1], &args.BlockNumber); err != nil {
return err
}
} else {
args.BlockNumber = -1
}
return nil
}
type NewSignArgs struct {
From string
Data string
}
func (args *NewSignArgs) UnmarshalJSON(b []byte) (err error) {
var obj []json.RawMessage
var ext struct {
From string
Data string
}
// Decode byte slice to array of RawMessages
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
// Check for sufficient params
if len(obj) < 1 {
return shared.NewInsufficientParamsError(len(obj), 1)
}
// Decode 0th RawMessage to temporary struct
if err := json.Unmarshal(obj[0], &ext); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(ext.From) == 0 {
return shared.NewValidationError("from", "is required")
}
if len(ext.Data) == 0 {
return shared.NewValidationError("data", "is required")
}
args.From = ext.From
args.Data = ext.Data
return nil
}
type NewTxArgs struct {
From string
To string
Nonce *big.Int
Value *big.Int
Gas *big.Int
GasPrice *big.Int
Data string
BlockNumber int64
}
func (args *NewTxArgs) UnmarshalJSON(b []byte) (err error) {
var obj []json.RawMessage
var ext struct {
From string
To string
Nonce interface{}
Value interface{}
Gas interface{}
GasPrice interface{}
Data string
}
// Decode byte slice to array of RawMessages
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
// Check for sufficient params
if len(obj) < 1 {
return shared.NewInsufficientParamsError(len(obj), 1)
}
// Decode 0th RawMessage to temporary struct
if err := json.Unmarshal(obj[0], &ext); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(ext.From) == 0 {
return shared.NewValidationError("from", "is required")
}
args.From = ext.From
args.To = ext.To
args.Data = ext.Data
var num *big.Int
if ext.Nonce != nil {
num, err = numString(ext.Nonce)
if err != nil {
return err
}
}
args.Nonce = num
if ext.Value == nil {
num = big.NewInt(0)
} else {
num, err = numString(ext.Value)
if err != nil {
return err
}
}
args.Value = num
num = nil
if ext.Gas == nil {
num = big.NewInt(0)
} else {
if num, err = numString(ext.Gas); err != nil {
return err
}
}
args.Gas = num
num = nil
if ext.GasPrice == nil {
num = big.NewInt(0)
} else {
if num, err = numString(ext.GasPrice); err != nil {
return err
}
}
args.GasPrice = num
// Check for optional BlockNumber param
if len(obj) > 1 {
if err := blockHeightFromJson(obj[1], &args.BlockNumber); err != nil {
return err
}
} else {
args.BlockNumber = -1
}
return nil
}
type SourceArgs struct {
Source string
}
func (args *SourceArgs) UnmarshalJSON(b []byte) (err error) {
var obj []interface{}
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 1 {
return shared.NewInsufficientParamsError(len(obj), 1)
}
arg0, ok := obj[0].(string)
if !ok {
return shared.NewInvalidTypeError("source code", "not a string")
}
args.Source = arg0
return nil
}
type CallArgs struct {
From string
To string
Value *big.Int
Gas *big.Int
GasPrice *big.Int
Data string
BlockNumber int64
}
func (args *CallArgs) UnmarshalJSON(b []byte) (err error) {
var obj []json.RawMessage
var ext struct {
From string
To string
Value interface{}
Gas interface{}
GasPrice interface{}
Data string
}
// Decode byte slice to array of RawMessages
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
// Check for sufficient params
if len(obj) < 1 {
return shared.NewInsufficientParamsError(len(obj), 1)
}
// Decode 0th RawMessage to temporary struct
if err := json.Unmarshal(obj[0], &ext); err != nil {
return shared.NewDecodeParamError(err.Error())
}
args.From = ext.From
if len(ext.To) == 0 {
return shared.NewValidationError("to", "is required")
}
args.To = ext.To
var num *big.Int
if ext.Value == nil {
num = big.NewInt(0)
} else {
if num, err = numString(ext.Value); err != nil {
return err
}
}
args.Value = num
if ext.Gas == nil {
num = big.NewInt(0)
} else {
if num, err = numString(ext.Gas); err != nil {
return err
}
}
args.Gas = num
if ext.GasPrice == nil {
num = big.NewInt(0)
} else {
if num, err = numString(ext.GasPrice); err != nil {
return err
}
}
args.GasPrice = num
args.Data = ext.Data
// Check for optional BlockNumber param
if len(obj) > 1 {
if err := blockHeightFromJson(obj[1], &args.BlockNumber); err != nil {
return err
}
} else {
args.BlockNumber = -1
}
return nil
}
type HashIndexArgs struct {
Hash string
Index int64
}
func (args *HashIndexArgs) UnmarshalJSON(b []byte) (err error) {
var obj []interface{}
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 2 {
return shared.NewInsufficientParamsError(len(obj), 2)
}
arg0, ok := obj[0].(string)
if !ok {
return shared.NewInvalidTypeError("hash", "not a string")
}
args.Hash = arg0
arg1, ok := obj[1].(string)
if !ok {
return shared.NewInvalidTypeError("index", "not a string")
}
args.Index = common.Big(arg1).Int64()
return nil
}
type BlockNumIndexArgs struct {
BlockNumber int64
Index int64
}
func (args *BlockNumIndexArgs) UnmarshalJSON(b []byte) (err error) {
var obj []interface{}
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 2 {
return shared.NewInsufficientParamsError(len(obj), 2)
}
if err := blockHeight(obj[0], &args.BlockNumber); err != nil {
return err
}
var arg1 *big.Int
if arg1, err = numString(obj[1]); err != nil {
return err
}
args.Index = arg1.Int64()
return nil
}
type GetBlockByHashArgs struct {
BlockHash string
IncludeTxs bool
}
func (args *GetBlockByHashArgs) UnmarshalJSON(b []byte) (err error) {
var obj []interface{}
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 2 {
return shared.NewInsufficientParamsError(len(obj), 2)
}
argstr, ok := obj[0].(string)
if !ok {
return shared.NewInvalidTypeError("blockHash", "not a string")
}
args.BlockHash = argstr
args.IncludeTxs = obj[1].(bool)
return nil
}
type GetBlockByNumberArgs struct {
BlockNumber int64
IncludeTxs bool
}
func (args *GetBlockByNumberArgs) UnmarshalJSON(b []byte) (err error) {
var obj []interface{}
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 2 {
return shared.NewInsufficientParamsError(len(obj), 2)
}
if err := blockHeight(obj[0], &args.BlockNumber); err != nil {
return err
}
args.IncludeTxs = obj[1].(bool)
return nil
}
type BlockFilterArgs struct {
Earliest int64
Latest int64
Address []string
Topics [][]string
Skip int
Max int
}
func (args *BlockFilterArgs) UnmarshalJSON(b []byte) (err error) {
var obj []struct {
FromBlock interface{} `json:"fromBlock"`
ToBlock interface{} `json:"toBlock"`
Limit interface{} `json:"limit"`
Offset interface{} `json:"offset"`
Address interface{} `json:"address"`
Topics interface{} `json:"topics"`
}
if err = json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 1 {
return shared.NewInsufficientParamsError(len(obj), 1)
}
// args.Earliest, err = toNumber(obj[0].ToBlock)
// if err != nil {
// return shared.NewDecodeParamError(fmt.Sprintf("FromBlock %v", err))
// }
// args.Latest, err = toNumber(obj[0].FromBlock)
// if err != nil {
// return shared.NewDecodeParamError(fmt.Sprintf("ToBlock %v", err))
var num int64
var numBig *big.Int
// if blank then latest
if obj[0].FromBlock == nil {
num = -1
} else {
if err := blockHeight(obj[0].FromBlock, &num); err != nil {
return err
}
}
// if -2 or other "silly" number, use latest
if num < 0 {
args.Earliest = -1 //latest block
} else {
args.Earliest = num
}
// if blank than latest
if obj[0].ToBlock == nil {
num = -1
} else {
if err := blockHeight(obj[0].ToBlock, &num); err != nil {
return err
}
}
args.Latest = num
if obj[0].Limit == nil {
numBig = big.NewInt(defaultLogLimit)
} else {
if numBig, err = numString(obj[0].Limit); err != nil {
return err
}
}
args.Max = int(numBig.Int64())
if obj[0].Offset == nil {
numBig = big.NewInt(defaultLogOffset)
} else {
if numBig, err = numString(obj[0].Offset); err != nil {
return err
}
}
args.Skip = int(numBig.Int64())
if obj[0].Address != nil {
marg, ok := obj[0].Address.([]interface{})
if ok {
v := make([]string, len(marg))
for i, arg := range marg {
argstr, ok := arg.(string)
if !ok {
return shared.NewInvalidTypeError(fmt.Sprintf("address[%d]", i), "is not a string")
}
v[i] = argstr
}
args.Address = v
} else {
argstr, ok := obj[0].Address.(string)
if ok {
v := make([]string, 1)
v[0] = argstr
args.Address = v
} else {
return shared.NewInvalidTypeError("address", "is not a string or array")
}
}
}
if obj[0].Topics != nil {
other, ok := obj[0].Topics.([]interface{})
if ok {
topicdbl := make([][]string, len(other))
for i, iv := range other {
if argstr, ok := iv.(string); ok {
// Found a string, push into first element of array
topicsgl := make([]string, 1)
topicsgl[0] = argstr
topicdbl[i] = topicsgl
} else if argarray, ok := iv.([]interface{}); ok {
// Found an array of other
topicdbl[i] = make([]string, len(argarray))
for j, jv := range argarray {
if v, ok := jv.(string); ok {
topicdbl[i][j] = v
} else if jv == nil {
topicdbl[i][j] = ""
} else {
return shared.NewInvalidTypeError(fmt.Sprintf("topic[%d][%d]", i, j), "is not a string")
}
}
} else if iv == nil {
topicdbl[i] = []string{""}
} else {
return shared.NewInvalidTypeError(fmt.Sprintf("topic[%d]", i), "not a string or array")
}
}
args.Topics = topicdbl
return nil
} else {
return shared.NewInvalidTypeError("topic", "is not a string or array")
}
}
return nil
}
type FilterIdArgs struct {
Id int
}
func (args *FilterIdArgs) UnmarshalJSON(b []byte) (err error) {
var obj []interface{}
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 1 {
return shared.NewInsufficientParamsError(len(obj), 1)
}
var num *big.Int
if num, err = numString(obj[0]); err != nil {
return err
}
args.Id = int(num.Int64())
return nil
}
type LogRes struct {
Address *hexdata `json:"address"`
Topics []*hexdata `json:"topics"`
Data *hexdata `json:"data"`
BlockNumber *hexnum `json:"blockNumber"`
LogIndex *hexnum `json:"logIndex"`
BlockHash *hexdata `json:"blockHash"`
TransactionHash *hexdata `json:"transactionHash"`
TransactionIndex *hexnum `json:"transactionIndex"`
}
func NewLogRes(log *state.Log) LogRes {
var l LogRes
l.Topics = make([]*hexdata, len(log.Topics))
for j, topic := range log.Topics {
l.Topics[j] = newHexData(topic)
}
l.Address = newHexData(log.Address)
l.Data = newHexData(log.Data)
l.BlockNumber = newHexNum(log.Number)
l.LogIndex = newHexNum(log.Index)
l.TransactionHash = newHexData(log.TxHash)
l.TransactionIndex = newHexNum(log.TxIndex)
l.BlockHash = newHexData(log.BlockHash)
return l
}
func NewLogsRes(logs state.Logs) (ls []LogRes) {
ls = make([]LogRes, len(logs))
for i, log := range logs {
ls[i] = NewLogRes(log)
}
return
}
func NewHashesRes(hs []common.Hash) []string {
hashes := make([]string, len(hs))
for i, hash := range hs {
hashes[i] = hash.Hex()
}
return hashes
}
type SubmitWorkArgs struct {
Nonce uint64
Header string
Digest string
}
func (args *SubmitWorkArgs) UnmarshalJSON(b []byte) (err error) {
var obj []interface{}
if err = json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 3 {
return shared.NewInsufficientParamsError(len(obj), 3)
}
var objstr string
var ok bool
if objstr, ok = obj[0].(string); !ok {
return shared.NewInvalidTypeError("nonce", "not a string")
}
args.Nonce = common.String2Big(objstr).Uint64()
if objstr, ok = obj[1].(string); !ok {
return shared.NewInvalidTypeError("header", "not a string")
}
args.Header = objstr
if objstr, ok = obj[2].(string); !ok {
return shared.NewInvalidTypeError("digest", "not a string")
}
args.Digest = objstr
return nil
}

3
rpc/api/eth_js.go
Unescape View File

@ -0,0 +1,3 @@
package api
// JS api provided by web3.js

460
rpc/api/parsing.go
Unescape View File

@ -0,0 +1,460 @@
package api
import (
"encoding/binary"
"encoding/hex"
"encoding/json"
"math/big"
"strings"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/rpc/shared"
)
type hexdata struct {
data []byte
isNil bool
}
func (d *hexdata) String() string {
return "0x" + common.Bytes2Hex(d.data)
}
func (d *hexdata) MarshalJSON() ([]byte, error) {
if d.isNil {
return json.Marshal(nil)
}
return json.Marshal(d.String())
}
func newHexData(input interface{}) *hexdata {
d := new(hexdata)
if input == nil {
d.isNil = true
return d
}
switch input := input.(type) {
case []byte:
d.data = input
case common.Hash:
d.data = input.Bytes()
case *common.Hash:
if input == nil {
d.isNil = true
} else {
d.data = input.Bytes()
}
case common.Address:
d.data = input.Bytes()
case *common.Address:
if input == nil {
d.isNil = true
} else {
d.data = input.Bytes()
}
case types.Bloom:
d.data = input.Bytes()
case *types.Bloom:
if input == nil {
d.isNil = true
} else {
d.data = input.Bytes()
}
case *big.Int:
if input == nil {
d.isNil = true
} else {
d.data = input.Bytes()
}
case int64:
d.data = big.NewInt(input).Bytes()
case uint64:
buff := make([]byte, 8)
binary.BigEndian.PutUint64(buff, input)
d.data = buff
case int:
d.data = big.NewInt(int64(input)).Bytes()
case uint:
d.data = big.NewInt(int64(input)).Bytes()
case int8:
d.data = big.NewInt(int64(input)).Bytes()
case uint8:
d.data = big.NewInt(int64(input)).Bytes()
case int16:
d.data = big.NewInt(int64(input)).Bytes()
case uint16:
buff := make([]byte, 2)
binary.BigEndian.PutUint16(buff, input)
d.data = buff
case int32:
d.data = big.NewInt(int64(input)).Bytes()
case uint32:
buff := make([]byte, 4)
binary.BigEndian.PutUint32(buff, input)
d.data = buff
case string: // hexstring
// aaargh ffs TODO: avoid back-and-forth hex encodings where unneeded
bytes, err := hex.DecodeString(strings.TrimPrefix(input, "0x"))
if err != nil {
d.isNil = true
} else {
d.data = bytes
}
default:
d.isNil = true
}
return d
}
type hexnum struct {
data []byte
isNil bool
}
func (d *hexnum) String() string {
// Get hex string from bytes
out := common.Bytes2Hex(d.data)
// Trim leading 0s
out = strings.TrimLeft(out, "0")
// Output "0x0" when value is 0
if len(out) == 0 {
out = "0"
}
return "0x" + out
}
func (d *hexnum) MarshalJSON() ([]byte, error) {
if d.isNil {
return json.Marshal(nil)
}
return json.Marshal(d.String())
}
func newHexNum(input interface{}) *hexnum {
d := new(hexnum)
d.data = newHexData(input).data
return d
}
type BlockRes struct {
fullTx bool
BlockNumber *hexnum `json:"number"`
BlockHash *hexdata `json:"hash"`
ParentHash *hexdata `json:"parentHash"`
Nonce *hexdata `json:"nonce"`
Sha3Uncles *hexdata `json:"sha3Uncles"`
LogsBloom *hexdata `json:"logsBloom"`
TransactionRoot *hexdata `json:"transactionsRoot"`
StateRoot *hexdata `json:"stateRoot"`
Miner *hexdata `json:"miner"`
Difficulty *hexnum `json:"difficulty"`
TotalDifficulty *hexnum `json:"totalDifficulty"`
Size *hexnum `json:"size"`
ExtraData *hexdata `json:"extraData"`
GasLimit *hexnum `json:"gasLimit"`
GasUsed *hexnum `json:"gasUsed"`
UnixTimestamp *hexnum `json:"timestamp"`
Transactions []*TransactionRes `json:"transactions"`
Uncles []*UncleRes `json:"uncles"`
}
func (b *BlockRes) MarshalJSON() ([]byte, error) {
if b.fullTx {
var ext struct {
BlockNumber *hexnum `json:"number"`
BlockHash *hexdata `json:"hash"`
ParentHash *hexdata `json:"parentHash"`
Nonce *hexdata `json:"nonce"`
Sha3Uncles *hexdata `json:"sha3Uncles"`
LogsBloom *hexdata `json:"logsBloom"`
TransactionRoot *hexdata `json:"transactionsRoot"`
StateRoot *hexdata `json:"stateRoot"`
Miner *hexdata `json:"miner"`
Difficulty *hexnum `json:"difficulty"`
TotalDifficulty *hexnum `json:"totalDifficulty"`
Size *hexnum `json:"size"`
ExtraData *hexdata `json:"extraData"`
GasLimit *hexnum `json:"gasLimit"`
GasUsed *hexnum `json:"gasUsed"`
UnixTimestamp *hexnum `json:"timestamp"`
Transactions []*TransactionRes `json:"transactions"`
Uncles []*hexdata `json:"uncles"`
}
ext.BlockNumber = b.BlockNumber
ext.BlockHash = b.BlockHash
ext.ParentHash = b.ParentHash
ext.Nonce = b.Nonce
ext.Sha3Uncles = b.Sha3Uncles
ext.LogsBloom = b.LogsBloom
ext.TransactionRoot = b.TransactionRoot
ext.StateRoot = b.StateRoot
ext.Miner = b.Miner
ext.Difficulty = b.Difficulty
ext.TotalDifficulty = b.TotalDifficulty
ext.Size = b.Size
ext.ExtraData = b.ExtraData
ext.GasLimit = b.GasLimit
ext.GasUsed = b.GasUsed
ext.UnixTimestamp = b.UnixTimestamp
ext.Transactions = b.Transactions
ext.Uncles = make([]*hexdata, len(b.Uncles))
for i, u := range b.Uncles {
ext.Uncles[i] = u.BlockHash
}
return json.Marshal(ext)
} else {
var ext struct {
BlockNumber *hexnum `json:"number"`
BlockHash *hexdata `json:"hash"`
ParentHash *hexdata `json:"parentHash"`
Nonce *hexdata `json:"nonce"`
Sha3Uncles *hexdata `json:"sha3Uncles"`
LogsBloom *hexdata `json:"logsBloom"`
TransactionRoot *hexdata `json:"transactionsRoot"`
StateRoot *hexdata `json:"stateRoot"`
Miner *hexdata `json:"miner"`
Difficulty *hexnum `json:"difficulty"`
TotalDifficulty *hexnum `json:"totalDifficulty"`
Size *hexnum `json:"size"`
ExtraData *hexdata `json:"extraData"`
GasLimit *hexnum `json:"gasLimit"`
GasUsed *hexnum `json:"gasUsed"`
UnixTimestamp *hexnum `json:"timestamp"`
Transactions []*hexdata `json:"transactions"`
Uncles []*hexdata `json:"uncles"`
}
ext.BlockNumber = b.BlockNumber
ext.BlockHash = b.BlockHash
ext.ParentHash = b.ParentHash
ext.Nonce = b.Nonce
ext.Sha3Uncles = b.Sha3Uncles
ext.LogsBloom = b.LogsBloom
ext.TransactionRoot = b.TransactionRoot
ext.StateRoot = b.StateRoot
ext.Miner = b.Miner
ext.Difficulty = b.Difficulty
ext.TotalDifficulty = b.TotalDifficulty
ext.Size = b.Size
ext.ExtraData = b.ExtraData
ext.GasLimit = b.GasLimit
ext.GasUsed = b.GasUsed
ext.UnixTimestamp = b.UnixTimestamp
ext.Transactions = make([]*hexdata, len(b.Transactions))
for i, tx := range b.Transactions {
ext.Transactions[i] = tx.Hash
}
ext.Uncles = make([]*hexdata, len(b.Uncles))
for i, u := range b.Uncles {
ext.Uncles[i] = u.BlockHash
}
return json.Marshal(ext)
}
}
func NewBlockRes(block *types.Block, fullTx bool) *BlockRes {
if block == nil {
return nil
}
res := new(BlockRes)
res.fullTx = fullTx
res.BlockNumber = newHexNum(block.Number())
res.BlockHash = newHexData(block.Hash())
res.ParentHash = newHexData(block.ParentHash())
res.Nonce = newHexData(block.Nonce())
res.Sha3Uncles = newHexData(block.Header().UncleHash)
res.LogsBloom = newHexData(block.Bloom())
res.TransactionRoot = newHexData(block.Header().TxHash)
res.StateRoot = newHexData(block.Root())
res.Miner = newHexData(block.Header().Coinbase)
res.Difficulty = newHexNum(block.Difficulty())
res.TotalDifficulty = newHexNum(block.Td)
res.Size = newHexNum(block.Size().Int64())
res.ExtraData = newHexData(block.Header().Extra)
res.GasLimit = newHexNum(block.GasLimit())
res.GasUsed = newHexNum(block.GasUsed())
res.UnixTimestamp = newHexNum(block.Time())
res.Transactions = make([]*TransactionRes, len(block.Transactions()))
for i, tx := range block.Transactions() {
res.Transactions[i] = NewTransactionRes(tx)
res.Transactions[i].BlockHash = res.BlockHash
res.Transactions[i].BlockNumber = res.BlockNumber
res.Transactions[i].TxIndex = newHexNum(i)
}
res.Uncles = make([]*UncleRes, len(block.Uncles()))
for i, uncle := range block.Uncles() {
res.Uncles[i] = NewUncleRes(uncle)
}
return res
}
type TransactionRes struct {
Hash *hexdata `json:"hash"`
Nonce *hexnum `json:"nonce"`
BlockHash *hexdata `json:"blockHash"`
BlockNumber *hexnum `json:"blockNumber"`
TxIndex *hexnum `json:"transactionIndex"`
From *hexdata `json:"from"`
To *hexdata `json:"to"`
Value *hexnum `json:"value"`
Gas *hexnum `json:"gas"`
GasPrice *hexnum `json:"gasPrice"`
Input *hexdata `json:"input"`
}
func NewTransactionRes(tx *types.Transaction) *TransactionRes {
if tx == nil {
return nil
}
var v = new(TransactionRes)
v.Hash = newHexData(tx.Hash())
v.Nonce = newHexNum(tx.Nonce())
// v.BlockHash =
// v.BlockNumber =
// v.TxIndex =
from, _ := tx.From()
v.From = newHexData(from)
v.To = newHexData(tx.To())
v.Value = newHexNum(tx.Value())
v.Gas = newHexNum(tx.Gas())
v.GasPrice = newHexNum(tx.GasPrice())
v.Input = newHexData(tx.Data())
return v
}
type UncleRes struct {
BlockNumber *hexnum `json:"number"`
BlockHash *hexdata `json:"hash"`
ParentHash *hexdata `json:"parentHash"`
Nonce *hexdata `json:"nonce"`
Sha3Uncles *hexdata `json:"sha3Uncles"`
ReceiptHash *hexdata `json:"receiptHash"`
LogsBloom *hexdata `json:"logsBloom"`
TransactionRoot *hexdata `json:"transactionsRoot"`
StateRoot *hexdata `json:"stateRoot"`
Miner *hexdata `json:"miner"`
Difficulty *hexnum `json:"difficulty"`
ExtraData *hexdata `json:"extraData"`
GasLimit *hexnum `json:"gasLimit"`
GasUsed *hexnum `json:"gasUsed"`
UnixTimestamp *hexnum `json:"timestamp"`
}
func NewUncleRes(h *types.Header) *UncleRes {
if h == nil {
return nil
}
var v = new(UncleRes)
v.BlockNumber = newHexNum(h.Number)
v.BlockHash = newHexData(h.Hash())
v.ParentHash = newHexData(h.ParentHash)
v.Sha3Uncles = newHexData(h.UncleHash)
v.Nonce = newHexData(h.Nonce[:])
v.LogsBloom = newHexData(h.Bloom)
v.TransactionRoot = newHexData(h.TxHash)
v.StateRoot = newHexData(h.Root)
v.Miner = newHexData(h.Coinbase)
v.Difficulty = newHexNum(h.Difficulty)
v.ExtraData = newHexData(h.Extra)
v.GasLimit = newHexNum(h.GasLimit)
v.GasUsed = newHexNum(h.GasUsed)
v.UnixTimestamp = newHexNum(h.Time)
v.ReceiptHash = newHexData(h.ReceiptHash)
return v
}
// type FilterLogRes struct {
// Hash string `json:"hash"`
// Address string `json:"address"`
// Data string `json:"data"`
// BlockNumber string `json:"blockNumber"`
// TransactionHash string `json:"transactionHash"`
// BlockHash string `json:"blockHash"`
// TransactionIndex string `json:"transactionIndex"`
// LogIndex string `json:"logIndex"`
// }
// type FilterWhisperRes struct {
// Hash string `json:"hash"`
// From string `json:"from"`
// To string `json:"to"`
// Expiry string `json:"expiry"`
// Sent string `json:"sent"`
// Ttl string `json:"ttl"`
// Topics string `json:"topics"`
// Payload string `json:"payload"`
// WorkProved string `json:"workProved"`
// }
func numString(raw interface{}) (*big.Int, error) {
var number *big.Int
// Parse as integer
num, ok := raw.(float64)
if ok {
number = big.NewInt(int64(num))
return number, nil
}
// Parse as string/hexstring
str, ok := raw.(string)
if ok {
number = common.String2Big(str)
return number, nil
}
return nil, shared.NewInvalidTypeError("", "not a number or string")
}
func blockHeight(raw interface{}, number *int64) error {
// Parse as integer
num, ok := raw.(float64)
if ok {
*number = int64(num)
return nil
}
// Parse as string/hexstring
str, ok := raw.(string)
if !ok {
return shared.NewInvalidTypeError("", "not a number or string")
}
switch str {
case "earliest":
*number = 0
case "latest":
*number = -1
case "pending":
*number = -2
default:
if common.HasHexPrefix(str) {
*number = common.String2Big(str).Int64()
} else {
return shared.NewInvalidTypeError("blockNumber", "is not a valid string")
}
}
return nil
}
func blockHeightFromJson(msg json.RawMessage, number *int64) error {
var raw interface{}
if err := json.Unmarshal(msg, &raw); err != nil {
return shared.NewDecodeParamError(err.Error())
}
return blockHeight(raw, number)
}

36
rpc/api/utils.go
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package api
import (
"strings"
"fmt"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/rpc/codec"
"github.com/ethereum/go-ethereum/xeth"
)
const (
EthApiName = "eth"
)
// Parse a comma separated API string to individual api's
func ParseApiString(apistr string, codec codec.Codec, xeth *xeth.XEth, eth *eth.Ethereum) ([]EthereumApi, error) {
if len(strings.TrimSpace(apistr)) == 0 {
return nil, fmt.Errorf("Empty apistr provided")
}
names := strings.Split(apistr, ",")
apis := make([]EthereumApi, len(names))
for i, name := range names {
switch strings.ToLower(strings.TrimSpace(name)) {
case EthApiName:
apis[i] = NewEthApi(xeth, codec)
default:
return nil, fmt.Errorf("Unknown API '%s'", name)
}
}
return apis, nil
}

47
rpc/codec/codec.go
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package codec
import (
"net"
"strconv"
"github.com/ethereum/go-ethereum/rpc/shared"
)
type Codec int
// (de)serialization support for rpc interface
type ApiCoder interface {
// Parse message to request from underlying stream
ReadRequest() (*shared.Request, error)
// Parse response message from underlying stream
ReadResponse() (interface{}, error)
// Encode response to encoded form in underlying stream
WriteResponse(interface{}) error
// Decode single message from data
Decode([]byte, interface{}) error
// Encode msg to encoded form
Encode(msg interface{}) ([]byte, error)
// close the underlying stream
Close()
}
// supported codecs
const (
JSON Codec = iota
nCodecs
)
var (
// collection with supported coders
coders = make([]func(net.Conn) ApiCoder, nCodecs)
)
// create a new coder instance
func (c Codec) New(conn net.Conn) ApiCoder {
switch c {
case JSON:
return NewJsonCoder(conn)
}
panic("codec: request for codec #" + strconv.Itoa(int(c)) + " is unavailable")
}

75
rpc/codec/json.go
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package codec
import (
"encoding/json"
"net"
"github.com/ethereum/go-ethereum/rpc/shared"
)
const (
MAX_RESPONSE_SIZE = 64 * 1024
)
// Json serialization support
type JsonCodec struct {
c net.Conn
d *json.Decoder
e *json.Encoder
}
// Create new JSON coder instance
func NewJsonCoder(conn net.Conn) ApiCoder {
return &JsonCodec{
c: conn,
d: json.NewDecoder(conn),
e: json.NewEncoder(conn),
}
}
// Serialize obj to JSON and write it to conn
func (self *JsonCodec) ReadRequest() (*shared.Request, error) {
req := shared.Request{}
err := self.d.Decode(&req)
if err == nil {
return &req, nil
}
return nil, err
}
func (self *JsonCodec) ReadResponse() (interface{}, error) {
var err error
buf := make([]byte, MAX_RESPONSE_SIZE)
n, _ := self.c.Read(buf)
var failure shared.ErrorResponse
if err = json.Unmarshal(buf[:n], &failure); err == nil && failure.Error != nil {
return failure, nil
}
var success shared.SuccessResponse
if err = json.Unmarshal(buf[:n], &success); err == nil {
return success, nil
}
return nil, err
}
// Encode response to encoded form in underlying stream
func (self *JsonCodec) Decode(data []byte, msg interface{}) error {
return json.Unmarshal(data, msg)
}
func (self *JsonCodec) Encode(msg interface{}) ([]byte, error) {
return json.Marshal(msg)
}
// Parse JSON data from conn to obj
func (self *JsonCodec) WriteResponse(res interface{}) error {
return self.e.Encode(&res)
}
// Close decoder and encoder
func (self *JsonCodec) Close() {
self.c.Close()
}

96
rpc/shared/errors.go
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package shared
import "fmt"
type InvalidTypeError struct {
method string
msg string
}
func (e *InvalidTypeError) Error() string {
return fmt.Sprintf("invalid type on field %s: %s", e.method, e.msg)
}
func NewInvalidTypeError(method, msg string) *InvalidTypeError {
return &InvalidTypeError{
method: method,
msg: msg,
}
}
type InsufficientParamsError struct {
have int
want int
}
func (e *InsufficientParamsError) Error() string {
return fmt.Sprintf("insufficient params, want %d have %d", e.want, e.have)
}
func NewInsufficientParamsError(have int, want int) *InsufficientParamsError {
return &InsufficientParamsError{
have: have,
want: want,
}
}
type NotImplementedError struct {
Method string
}
func (e *NotImplementedError) Error() string {
return fmt.Sprintf("%s method not implemented", e.Method)
}
func NewNotImplementedError(method string) *NotImplementedError {
return &NotImplementedError{
Method: method,
}
}
type DecodeParamError struct {
err string
}
func (e *DecodeParamError) Error() string {
return fmt.Sprintf("could not decode, %s", e.err)
}
func NewDecodeParamError(errstr string) error {
return &DecodeParamError{
err: errstr,
}
}
type ValidationError struct {
ParamName string
msg string
}
func (e *ValidationError) Error() string {
return fmt.Sprintf("%s not valid, %s", e.ParamName, e.msg)
}
func NewValidationError(param string, msg string) error {
return &ValidationError{
ParamName: param,
msg: msg,
}
}
type NotAvailableError struct {
Method string
Reason string
}
func (e *NotAvailableError) Error() string {
return fmt.Sprintf("%s method not available: %s", e.Method, e.Reason)
}
func NewNotAvailableError(method string, reason string) *NotAvailableError {
return &NotAvailableError{
Method: method,
Reason: reason,
}
}

38
rpc/shared/types.go
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@ -0,0 +1,38 @@
package shared
import "encoding/json"
// RPC request
type Request struct {
Id interface{} `json:"id"`
Jsonrpc string `json:"jsonrpc"`
Method string `json:"method"`
Params json.RawMessage `json:"params"`
}
// RPC response
type Response struct {
Id interface{} `json:"id"`
Jsonrpc string `json:"jsonrpc"`
}
// RPC success response
type SuccessResponse struct {
Id interface{} `json:"id"`
Jsonrpc string `json:"jsonrpc"`
Result interface{} `json:"result"`
}
// RPC error response
type ErrorResponse struct {
Id interface{} `json:"id"`
Jsonrpc string `json:"jsonrpc"`
Error *ErrorObject `json:"error"`
}
// RPC error response details
type ErrorObject struct {
Code int `json:"code"`
Message string `json:"message"`
// Data interface{} `json:"data"`
}
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