package api
import (
"bytes"
"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.UncleHash())
res.LogsBloom = newHexData(block.Bloom())
res.TransactionRoot = newHexData(block.TxHash())
res.StateRoot = newHexData(block.Root())
res.Miner = newHexData(block.Coinbase())
res.Difficulty = newHexNum(block.Difficulty())
res.TotalDifficulty = newHexNum(block.Td)
res.Size = newHexNum(block.Size().Int64())
res.ExtraData = newHexData(block.Extra())
res.GasLimit = newHexNum(block.GasLimit())
res.GasUsed = newHexNum(block.GasUsed())
res.UnixTimestamp = newHexNum(block.Time())
txs := block.Transactions()
res.Transactions = make([]*TransactionRes, len(txs))
for i, tx := range txs {
res.Transactions[i] = NewTransactionRes(tx)
res.Transactions[i].BlockHash = res.BlockHash
res.Transactions[i].BlockNumber = res.BlockNumber
res.Transactions[i].TxIndex = newHexNum(i)
}
uncles := block.Uncles()
res.Uncles = make([]*UncleRes, len(uncles))
for i, uncle := range 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"`
// }
type ReceiptRes struct {
TransactionHash *hexdata `json:"transactionHash"`
TransactionIndex *hexnum `json:"transactionIndex"`
BlockNumber *hexnum `json:"blockNumber"`
BlockHash *hexdata `json:"blockHash"`
CumulativeGasUsed *hexnum `json:"cumulativeGasUsed"`
GasUsed *hexnum `json:"gasUsed"`
ContractAddress *hexdata `json:"contractAddress"`
Logs *[]interface{} `json:"logs"`
}
func NewReceiptRes(rec *types.Receipt) *ReceiptRes {
if rec == nil {
return nil
}
var v = new(ReceiptRes)
v.TransactionHash = newHexData(rec.TxHash)
if rec.GasUsed != nil {
v.GasUsed = newHexNum(rec.GasUsed.Bytes())
}
v.CumulativeGasUsed = newHexNum(rec.CumulativeGasUsed)
// If the ContractAddress is 20 0x0 bytes, assume it is not a contract creation
if bytes.Compare(rec.ContractAddress.Bytes(), bytes.Repeat([]byte{0}, 20)) != 0 {
v.ContractAddress = newHexData(rec.ContractAddress)
}
logs := make([]interface{}, len(rec.Logs()))
for i, log := range rec.Logs() {
logs[i] = NewLogRes(log)
}
v.Logs = &logs
return v
}
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)
}
